1 // Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // File : SMESH_MeshEditor.cxx
24 // Created : Mon Apr 12 16:10:22 2004
25 // Author : Edward AGAPOV (eap)
27 #include "SMESH_MeshEditor.hxx"
29 #include "SMDS_FaceOfNodes.hxx"
30 #include "SMDS_VolumeTool.hxx"
31 #include "SMDS_EdgePosition.hxx"
32 #include "SMDS_FacePosition.hxx"
33 #include "SMDS_SpacePosition.hxx"
34 #include "SMDS_MeshGroup.hxx"
35 #include "SMDS_LinearEdge.hxx"
36 #include "SMDS_Downward.hxx"
37 #include "SMDS_SetIterator.hxx"
39 #include "SMESHDS_Group.hxx"
40 #include "SMESHDS_Mesh.hxx"
42 #include "SMESH_Algo.hxx"
43 #include "SMESH_ControlsDef.hxx"
44 #include "SMESH_Group.hxx"
45 #include "SMESH_MeshAlgos.hxx"
46 #include "SMESH_MesherHelper.hxx"
47 #include "SMESH_OctreeNode.hxx"
48 #include "SMESH_subMesh.hxx"
50 #include <Basics_OCCTVersion.hxx>
52 #include "utilities.h"
55 #include <BRepAdaptor_Surface.hxx>
56 #include <BRepBuilderAPI_MakeEdge.hxx>
57 #include <BRepClass3d_SolidClassifier.hxx>
58 #include <BRep_Tool.hxx>
60 #include <Extrema_GenExtPS.hxx>
61 #include <Extrema_POnCurv.hxx>
62 #include <Extrema_POnSurf.hxx>
63 #include <Geom2d_Curve.hxx>
64 #include <GeomAdaptor_Surface.hxx>
65 #include <Geom_Curve.hxx>
66 #include <Geom_Surface.hxx>
67 #include <Precision.hxx>
68 #include <TColStd_ListOfInteger.hxx>
69 #include <TopAbs_State.hxx>
71 #include <TopExp_Explorer.hxx>
72 #include <TopTools_ListIteratorOfListOfShape.hxx>
73 #include <TopTools_ListOfShape.hxx>
74 #include <TopTools_SequenceOfShape.hxx>
76 #include <TopoDS_Face.hxx>
77 #include <TopoDS_Solid.hxx>
83 #include <gp_Trsf.hxx>
97 #include <boost/tuple/tuple.hpp>
99 #include <Standard_Failure.hxx>
100 #include <Standard_ErrorHandler.hxx>
102 #define cast2Node(elem) static_cast<const SMDS_MeshNode*>( elem )
105 using namespace SMESH::Controls;
109 template < class ELEM_SET >
110 SMDS_ElemIteratorPtr elemSetIterator( const ELEM_SET& elements )
112 typedef SMDS_SetIterator
113 < SMDS_pElement, typename ELEM_SET::const_iterator> TSetIterator;
114 return SMDS_ElemIteratorPtr( new TSetIterator( elements.begin(), elements.end() ));
118 //=======================================================================
119 //function : SMESH_MeshEditor
121 //=======================================================================
123 SMESH_MeshEditor::SMESH_MeshEditor( SMESH_Mesh* theMesh )
124 :myMesh( theMesh ) // theMesh may be NULL
128 //================================================================================
130 * \brief Clears myLastCreatedNodes and myLastCreatedElems
132 //================================================================================
134 void SMESH_MeshEditor::ClearLastCreated()
136 myLastCreatedNodes.Clear();
137 myLastCreatedElems.Clear();
140 //================================================================================
142 * \brief Initializes members by an existing element
143 * \param [in] elem - the source element
144 * \param [in] basicOnly - if true, does not set additional data of Ball and Polyhedron
146 //================================================================================
148 SMESH_MeshEditor::ElemFeatures&
149 SMESH_MeshEditor::ElemFeatures::Init( const SMDS_MeshElement* elem, bool basicOnly )
153 myType = elem->GetType();
154 if ( myType == SMDSAbs_Face || myType == SMDSAbs_Volume )
156 myIsPoly = elem->IsPoly();
159 myIsQuad = elem->IsQuadratic();
160 if ( myType == SMDSAbs_Volume && !basicOnly )
162 vector<int > quant = static_cast<const SMDS_VtkVolume* >( elem )->GetQuantities();
163 myPolyhedQuantities.swap( quant );
167 else if ( myType == SMDSAbs_Ball && !basicOnly )
169 myBallDiameter = static_cast<const SMDS_BallElement*>(elem)->GetDiameter();
175 //=======================================================================
179 //=======================================================================
182 SMESH_MeshEditor::AddElement(const vector<const SMDS_MeshNode*> & node,
183 const ElemFeatures& features)
185 SMDS_MeshElement* e = 0;
186 int nbnode = node.size();
187 SMESHDS_Mesh* mesh = GetMeshDS();
188 const int ID = features.myID;
190 switch ( features.myType ) {
192 if ( !features.myIsPoly ) {
194 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], ID);
195 else e = mesh->AddFace (node[0], node[1], node[2] );
197 else if (nbnode == 4) {
198 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3], ID);
199 else e = mesh->AddFace (node[0], node[1], node[2], node[3] );
201 else if (nbnode == 6) {
202 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
203 node[4], node[5], ID);
204 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
207 else if (nbnode == 7) {
208 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
209 node[4], node[5], node[6], ID);
210 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
211 node[4], node[5], node[6] );
213 else if (nbnode == 8) {
214 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
215 node[4], node[5], node[6], node[7], ID);
216 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
217 node[4], node[5], node[6], node[7] );
219 else if (nbnode == 9) {
220 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
221 node[4], node[5], node[6], node[7], node[8], ID);
222 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
223 node[4], node[5], node[6], node[7], node[8] );
226 else if ( !features.myIsQuad )
228 if ( ID >= 1 ) e = mesh->AddPolygonalFaceWithID(node, ID);
229 else e = mesh->AddPolygonalFace (node );
231 else if ( nbnode % 2 == 0 ) // just a protection
233 if ( ID >= 1 ) e = mesh->AddQuadPolygonalFaceWithID(node, ID);
234 else e = mesh->AddQuadPolygonalFace (node );
239 if ( !features.myIsPoly ) {
241 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3], ID);
242 else e = mesh->AddVolume (node[0], node[1], node[2], node[3] );
244 else if (nbnode == 5) {
245 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
247 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
250 else if (nbnode == 6) {
251 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
252 node[4], node[5], ID);
253 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
256 else if (nbnode == 8) {
257 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
258 node[4], node[5], node[6], node[7], ID);
259 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
260 node[4], node[5], node[6], node[7] );
262 else if (nbnode == 10) {
263 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
264 node[4], node[5], node[6], node[7],
265 node[8], node[9], ID);
266 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
267 node[4], node[5], node[6], node[7],
270 else if (nbnode == 12) {
271 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
272 node[4], node[5], node[6], node[7],
273 node[8], node[9], node[10], node[11], ID);
274 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
275 node[4], node[5], node[6], node[7],
276 node[8], node[9], node[10], node[11] );
278 else if (nbnode == 13) {
279 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
280 node[4], node[5], node[6], node[7],
281 node[8], node[9], node[10],node[11],
283 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
284 node[4], node[5], node[6], node[7],
285 node[8], node[9], node[10],node[11],
288 else if (nbnode == 15) {
289 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
290 node[4], node[5], node[6], node[7],
291 node[8], node[9], node[10],node[11],
292 node[12],node[13],node[14],ID);
293 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
294 node[4], node[5], node[6], node[7],
295 node[8], node[9], node[10],node[11],
296 node[12],node[13],node[14] );
298 else if (nbnode == 20) {
299 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
300 node[4], node[5], node[6], node[7],
301 node[8], node[9], node[10],node[11],
302 node[12],node[13],node[14],node[15],
303 node[16],node[17],node[18],node[19],ID);
304 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
305 node[4], node[5], node[6], node[7],
306 node[8], node[9], node[10],node[11],
307 node[12],node[13],node[14],node[15],
308 node[16],node[17],node[18],node[19] );
310 else if (nbnode == 27) {
311 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
312 node[4], node[5], node[6], node[7],
313 node[8], node[9], node[10],node[11],
314 node[12],node[13],node[14],node[15],
315 node[16],node[17],node[18],node[19],
316 node[20],node[21],node[22],node[23],
317 node[24],node[25],node[26], ID);
318 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
319 node[4], node[5], node[6], node[7],
320 node[8], node[9], node[10],node[11],
321 node[12],node[13],node[14],node[15],
322 node[16],node[17],node[18],node[19],
323 node[20],node[21],node[22],node[23],
324 node[24],node[25],node[26] );
327 else if ( !features.myIsQuad )
329 if ( ID >= 1 ) e = mesh->AddPolyhedralVolumeWithID(node, features.myPolyhedQuantities, ID);
330 else e = mesh->AddPolyhedralVolume (node, features.myPolyhedQuantities );
334 // if ( ID >= 1 ) e = mesh->AddQuadPolyhedralVolumeWithID(node, features.myPolyhedQuantities,ID);
335 // else e = mesh->AddQuadPolyhedralVolume (node, features.myPolyhedQuantities );
341 if ( ID >= 1 ) e = mesh->AddEdgeWithID(node[0], node[1], ID);
342 else e = mesh->AddEdge (node[0], node[1] );
344 else if ( nbnode == 3 ) {
345 if ( ID >= 1 ) e = mesh->AddEdgeWithID(node[0], node[1], node[2], ID);
346 else e = mesh->AddEdge (node[0], node[1], node[2] );
350 case SMDSAbs_0DElement:
352 if ( ID >= 1 ) e = mesh->Add0DElementWithID(node[0], ID);
353 else e = mesh->Add0DElement (node[0] );
358 if ( ID >= 1 ) e = mesh->AddNodeWithID(node[0]->X(), node[0]->Y(), node[0]->Z(), ID);
359 else e = mesh->AddNode (node[0]->X(), node[0]->Y(), node[0]->Z() );
363 if ( ID >= 1 ) e = mesh->AddBallWithID(node[0], features.myBallDiameter, ID);
364 else e = mesh->AddBall (node[0], features.myBallDiameter );
369 if ( e ) myLastCreatedElems.Append( e );
373 //=======================================================================
377 //=======================================================================
379 SMDS_MeshElement* SMESH_MeshEditor::AddElement(const vector<int> & nodeIDs,
380 const ElemFeatures& features)
382 vector<const SMDS_MeshNode*> nodes;
383 nodes.reserve( nodeIDs.size() );
384 vector<int>::const_iterator id = nodeIDs.begin();
385 while ( id != nodeIDs.end() ) {
386 if ( const SMDS_MeshNode* node = GetMeshDS()->FindNode( *id++ ))
387 nodes.push_back( node );
391 return AddElement( nodes, features );
394 //=======================================================================
396 //purpose : Remove a node or an element.
397 // Modify a compute state of sub-meshes which become empty
398 //=======================================================================
400 int SMESH_MeshEditor::Remove (const list< int >& theIDs,
403 myLastCreatedElems.Clear();
404 myLastCreatedNodes.Clear();
406 SMESHDS_Mesh* aMesh = GetMeshDS();
407 set< SMESH_subMesh *> smmap;
410 list<int>::const_iterator it = theIDs.begin();
411 for ( ; it != theIDs.end(); it++ ) {
412 const SMDS_MeshElement * elem;
414 elem = aMesh->FindNode( *it );
416 elem = aMesh->FindElement( *it );
420 // Notify VERTEX sub-meshes about modification
422 const SMDS_MeshNode* node = cast2Node( elem );
423 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX )
424 if ( int aShapeID = node->getshapeId() )
425 if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( aShapeID ) )
428 // Find sub-meshes to notify about modification
429 // SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
430 // while ( nodeIt->more() ) {
431 // const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
432 // const SMDS_PositionPtr& aPosition = node->GetPosition();
433 // if ( aPosition.get() ) {
434 // if ( int aShapeID = aPosition->GetShapeId() ) {
435 // if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( aShapeID ) )
436 // smmap.insert( sm );
443 aMesh->RemoveNode( static_cast< const SMDS_MeshNode* >( elem ));
445 aMesh->RemoveElement( elem );
449 // Notify sub-meshes about modification
450 if ( !smmap.empty() ) {
451 set< SMESH_subMesh *>::iterator smIt;
452 for ( smIt = smmap.begin(); smIt != smmap.end(); smIt++ )
453 (*smIt)->ComputeStateEngine( SMESH_subMesh::MESH_ENTITY_REMOVED );
456 // // Check if the whole mesh becomes empty
457 // if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( 1 ) )
458 // sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
463 //================================================================================
465 * \brief Create 0D elements on all nodes of the given object except those
466 * nodes on which a 0D element already exists.
467 * \param elements - Elements on whose nodes to create 0D elements; if empty,
468 * the all mesh is treated
469 * \param all0DElems - returns all 0D elements found or created on nodes of \a elements
471 //================================================================================
473 void SMESH_MeshEditor::Create0DElementsOnAllNodes( const TIDSortedElemSet& elements,
474 TIDSortedElemSet& all0DElems )
476 SMDS_ElemIteratorPtr elemIt;
477 vector< const SMDS_MeshElement* > allNodes;
478 if ( elements.empty() )
480 allNodes.reserve( GetMeshDS()->NbNodes() );
481 elemIt = GetMeshDS()->elementsIterator( SMDSAbs_Node );
482 while ( elemIt->more() )
483 allNodes.push_back( elemIt->next() );
485 elemIt = elemSetIterator( allNodes );
489 elemIt = elemSetIterator( elements );
492 while ( elemIt->more() )
494 const SMDS_MeshElement* e = elemIt->next();
495 SMDS_ElemIteratorPtr nodeIt = e->nodesIterator();
496 while ( nodeIt->more() )
498 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
499 SMDS_ElemIteratorPtr it0D = n->GetInverseElementIterator( SMDSAbs_0DElement );
501 all0DElems.insert( it0D->next() );
503 myLastCreatedElems.Append( GetMeshDS()->Add0DElement( n ));
504 all0DElems.insert( myLastCreatedElems.Last() );
510 //=======================================================================
511 //function : FindShape
512 //purpose : Return an index of the shape theElem is on
513 // or zero if a shape not found
514 //=======================================================================
516 int SMESH_MeshEditor::FindShape (const SMDS_MeshElement * theElem)
518 myLastCreatedElems.Clear();
519 myLastCreatedNodes.Clear();
521 SMESHDS_Mesh * aMesh = GetMeshDS();
522 if ( aMesh->ShapeToMesh().IsNull() )
525 int aShapeID = theElem->getshapeId();
529 if ( SMESHDS_SubMesh * sm = aMesh->MeshElements( aShapeID ))
530 if ( sm->Contains( theElem ))
533 if ( theElem->GetType() == SMDSAbs_Node ) {
534 MESSAGE( ":( Error: invalid myShapeId of node " << theElem->GetID() );
537 MESSAGE( ":( Error: invalid myShapeId of element " << theElem->GetID() );
540 TopoDS_Shape aShape; // the shape a node of theElem is on
541 if ( theElem->GetType() != SMDSAbs_Node )
543 SMDS_ElemIteratorPtr nodeIt = theElem->nodesIterator();
544 while ( nodeIt->more() ) {
545 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
546 if ((aShapeID = node->getshapeId()) > 0) {
547 if ( SMESHDS_SubMesh * sm = aMesh->MeshElements( aShapeID ) ) {
548 if ( sm->Contains( theElem ))
550 if ( aShape.IsNull() )
551 aShape = aMesh->IndexToShape( aShapeID );
557 // None of nodes is on a proper shape,
558 // find the shape among ancestors of aShape on which a node is
559 if ( !aShape.IsNull() ) {
560 TopTools_ListIteratorOfListOfShape ancIt( GetMesh()->GetAncestors( aShape ));
561 for ( ; ancIt.More(); ancIt.Next() ) {
562 SMESHDS_SubMesh * sm = aMesh->MeshElements( ancIt.Value() );
563 if ( sm && sm->Contains( theElem ))
564 return aMesh->ShapeToIndex( ancIt.Value() );
569 SMESHDS_SubMeshIteratorPtr smIt = GetMeshDS()->SubMeshes();
570 while ( const SMESHDS_SubMesh* sm = smIt->next() )
571 if ( sm->Contains( theElem ))
578 //=======================================================================
579 //function : IsMedium
581 //=======================================================================
583 bool SMESH_MeshEditor::IsMedium(const SMDS_MeshNode* node,
584 const SMDSAbs_ElementType typeToCheck)
586 bool isMedium = false;
587 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator(typeToCheck);
588 while (it->more() && !isMedium ) {
589 const SMDS_MeshElement* elem = it->next();
590 isMedium = elem->IsMediumNode(node);
595 //=======================================================================
596 //function : shiftNodesQuadTria
597 //purpose : Shift nodes in the array corresponded to quadratic triangle
598 // example: (0,1,2,3,4,5) -> (1,2,0,4,5,3)
599 //=======================================================================
601 static void shiftNodesQuadTria(vector< const SMDS_MeshNode* >& aNodes)
603 const SMDS_MeshNode* nd1 = aNodes[0];
604 aNodes[0] = aNodes[1];
605 aNodes[1] = aNodes[2];
607 const SMDS_MeshNode* nd2 = aNodes[3];
608 aNodes[3] = aNodes[4];
609 aNodes[4] = aNodes[5];
613 //=======================================================================
614 //function : nbEdgeConnectivity
615 //purpose : return number of the edges connected with the theNode.
616 // if theEdges has connections with the other type of the
617 // elements, return -1
618 //=======================================================================
620 static int nbEdgeConnectivity(const SMDS_MeshNode* theNode)
622 // SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator();
624 // while(elemIt->more()) {
629 return theNode->NbInverseElements();
632 //=======================================================================
633 //function : getNodesFromTwoTria
635 //=======================================================================
637 static bool getNodesFromTwoTria(const SMDS_MeshElement * theTria1,
638 const SMDS_MeshElement * theTria2,
639 vector< const SMDS_MeshNode*>& N1,
640 vector< const SMDS_MeshNode*>& N2)
642 N1.assign( theTria1->begin_nodes(), theTria1->end_nodes() );
643 if ( N1.size() < 6 ) return false;
644 N2.assign( theTria2->begin_nodes(), theTria2->end_nodes() );
645 if ( N2.size() < 6 ) return false;
647 int sames[3] = {-1,-1,-1};
659 if(nbsames!=2) return false;
661 shiftNodesQuadTria(N1);
663 shiftNodesQuadTria(N1);
666 i = sames[0] + sames[1] + sames[2];
668 shiftNodesQuadTria(N2);
670 // now we receive following N1 and N2 (using numeration as in the image below)
671 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
672 // i.e. first nodes from both arrays form a new diagonal
676 //=======================================================================
677 //function : InverseDiag
678 //purpose : Replace two neighbour triangles with ones built on the same 4 nodes
679 // but having other common link.
680 // Return False if args are improper
681 //=======================================================================
683 bool SMESH_MeshEditor::InverseDiag (const SMDS_MeshElement * theTria1,
684 const SMDS_MeshElement * theTria2 )
686 MESSAGE("InverseDiag");
687 myLastCreatedElems.Clear();
688 myLastCreatedNodes.Clear();
690 if (!theTria1 || !theTria2)
693 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( theTria1 );
694 if (!F1) return false;
695 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( theTria2 );
696 if (!F2) return false;
697 if ((theTria1->GetEntityType() == SMDSEntity_Triangle) &&
698 (theTria2->GetEntityType() == SMDSEntity_Triangle)) {
700 // 1 +--+ A theTria1: ( 1 A B ) A->2 ( 1 2 B ) 1 +--+ A
701 // | /| theTria2: ( B A 2 ) B->1 ( 1 A 2 ) |\ |
705 // put nodes in array and find out indices of the same ones
706 const SMDS_MeshNode* aNodes [6];
707 int sameInd [] = { -1, -1, -1, -1, -1, -1 };
709 SMDS_ElemIteratorPtr it = theTria1->nodesIterator();
710 while ( it->more() ) {
711 aNodes[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
713 if ( i > 2 ) // theTria2
714 // find same node of theTria1
715 for ( int j = 0; j < 3; j++ )
716 if ( aNodes[ i ] == aNodes[ j ]) {
725 return false; // theTria1 is not a triangle
726 it = theTria2->nodesIterator();
728 if ( i == 6 && it->more() )
729 return false; // theTria2 is not a triangle
732 // find indices of 1,2 and of A,B in theTria1
733 int iA = -1, iB = 0, i1 = 0, i2 = 0;
734 for ( i = 0; i < 6; i++ ) {
735 if ( sameInd [ i ] == -1 ) {
740 if ( iA >= 0) iB = i;
744 // nodes 1 and 2 should not be the same
745 if ( aNodes[ i1 ] == aNodes[ i2 ] )
749 aNodes[ iA ] = aNodes[ i2 ];
751 aNodes[ sameInd[ iB ]] = aNodes[ i1 ];
753 GetMeshDS()->ChangeElementNodes( theTria1, aNodes, 3 );
754 GetMeshDS()->ChangeElementNodes( theTria2, &aNodes[ 3 ], 3 );
758 } // end if(F1 && F2)
760 // check case of quadratic faces
761 if (theTria1->GetEntityType() != SMDSEntity_Quad_Triangle &&
762 theTria1->GetEntityType() != SMDSEntity_BiQuad_Triangle)
764 if (theTria2->GetEntityType() != SMDSEntity_Quad_Triangle&&
765 theTria2->GetEntityType() != SMDSEntity_BiQuad_Triangle)
769 // 1 +--+--+ 2 theTria1: (1 2 4 5 9 7) or (2 4 1 9 7 5) or (4 1 2 7 5 9)
770 // | /| theTria2: (2 3 4 6 8 9) or (3 4 2 8 9 6) or (4 2 3 9 6 8)
778 vector< const SMDS_MeshNode* > N1;
779 vector< const SMDS_MeshNode* > N2;
780 if(!getNodesFromTwoTria(theTria1,theTria2,N1,N2))
782 // now we receive following N1 and N2 (using numeration as above image)
783 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
784 // i.e. first nodes from both arrays determ new diagonal
786 vector< const SMDS_MeshNode*> N1new( N1.size() );
787 vector< const SMDS_MeshNode*> N2new( N2.size() );
788 N1new.back() = N1.back(); // central node of biquadratic
789 N2new.back() = N2.back();
790 N1new[0] = N1[0]; N2new[0] = N1[0];
791 N1new[1] = N2[0]; N2new[1] = N1[1];
792 N1new[2] = N2[1]; N2new[2] = N2[0];
793 N1new[3] = N1[4]; N2new[3] = N1[3];
794 N1new[4] = N2[3]; N2new[4] = N2[5];
795 N1new[5] = N1[5]; N2new[5] = N1[4];
796 // change nodes in faces
797 GetMeshDS()->ChangeElementNodes( theTria1, &N1new[0], N1new.size() );
798 GetMeshDS()->ChangeElementNodes( theTria2, &N2new[0], N2new.size() );
800 // move the central node of biquadratic triangle
801 SMESH_MesherHelper helper( *GetMesh() );
802 for ( int is2nd = 0; is2nd < 2; ++is2nd )
804 const SMDS_MeshElement* tria = is2nd ? theTria2 : theTria1;
805 vector< const SMDS_MeshNode*>& nodes = is2nd ? N2new : N1new;
806 if ( nodes.size() < 7 )
808 helper.SetSubShape( tria->getshapeId() );
809 const TopoDS_Face& F = TopoDS::Face( helper.GetSubShape() );
813 xyz = ( SMESH_TNodeXYZ( nodes[3] ) +
814 SMESH_TNodeXYZ( nodes[4] ) +
815 SMESH_TNodeXYZ( nodes[5] )) / 3.;
820 gp_XY uv = ( helper.GetNodeUV( F, nodes[3], nodes[2], &checkUV ) +
821 helper.GetNodeUV( F, nodes[4], nodes[0], &checkUV ) +
822 helper.GetNodeUV( F, nodes[5], nodes[1], &checkUV )) / 3.;
824 Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc);
825 xyz = S->Value( uv.X(), uv.Y() );
826 xyz.Transform( loc );
827 if ( nodes[6]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE && // set UV
828 nodes[6]->getshapeId() > 0 )
829 GetMeshDS()->SetNodeOnFace( nodes[6], nodes[6]->getshapeId(), uv.X(), uv.Y() );
831 GetMeshDS()->MoveNode( nodes[6], xyz.X(), xyz.Y(), xyz.Z() );
836 //=======================================================================
837 //function : findTriangles
838 //purpose : find triangles sharing theNode1-theNode2 link
839 //=======================================================================
841 static bool findTriangles(const SMDS_MeshNode * theNode1,
842 const SMDS_MeshNode * theNode2,
843 const SMDS_MeshElement*& theTria1,
844 const SMDS_MeshElement*& theTria2)
846 if ( !theNode1 || !theNode2 ) return false;
848 theTria1 = theTria2 = 0;
850 set< const SMDS_MeshElement* > emap;
851 SMDS_ElemIteratorPtr it = theNode1->GetInverseElementIterator(SMDSAbs_Face);
853 const SMDS_MeshElement* elem = it->next();
854 if ( elem->NbCornerNodes() == 3 )
857 it = theNode2->GetInverseElementIterator(SMDSAbs_Face);
859 const SMDS_MeshElement* elem = it->next();
860 if ( emap.count( elem )) {
868 // theTria1 must be element with minimum ID
869 if ( theTria2->GetID() < theTria1->GetID() )
870 std::swap( theTria2, theTria1 );
878 //=======================================================================
879 //function : InverseDiag
880 //purpose : Replace two neighbour triangles sharing theNode1-theNode2 link
881 // with ones built on the same 4 nodes but having other common link.
882 // Return false if proper faces not found
883 //=======================================================================
885 bool SMESH_MeshEditor::InverseDiag (const SMDS_MeshNode * theNode1,
886 const SMDS_MeshNode * theNode2)
888 myLastCreatedElems.Clear();
889 myLastCreatedNodes.Clear();
891 MESSAGE( "::InverseDiag()" );
893 const SMDS_MeshElement *tr1, *tr2;
894 if ( !findTriangles( theNode1, theNode2, tr1, tr2 ))
897 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( tr1 );
898 if (!F1) return false;
899 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( tr2 );
900 if (!F2) return false;
901 if ((tr1->GetEntityType() == SMDSEntity_Triangle) &&
902 (tr2->GetEntityType() == SMDSEntity_Triangle)) {
904 // 1 +--+ A tr1: ( 1 A B ) A->2 ( 1 2 B ) 1 +--+ A
905 // | /| tr2: ( B A 2 ) B->1 ( 1 A 2 ) |\ |
909 // put nodes in array
910 // and find indices of 1,2 and of A in tr1 and of B in tr2
911 int i, iA1 = 0, i1 = 0;
912 const SMDS_MeshNode* aNodes1 [3];
913 SMDS_ElemIteratorPtr it;
914 for (i = 0, it = tr1->nodesIterator(); it->more(); i++ ) {
915 aNodes1[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
916 if ( aNodes1[ i ] == theNode1 )
917 iA1 = i; // node A in tr1
918 else if ( aNodes1[ i ] != theNode2 )
922 const SMDS_MeshNode* aNodes2 [3];
923 for (i = 0, it = tr2->nodesIterator(); it->more(); i++ ) {
924 aNodes2[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
925 if ( aNodes2[ i ] == theNode2 )
926 iB2 = i; // node B in tr2
927 else if ( aNodes2[ i ] != theNode1 )
931 // nodes 1 and 2 should not be the same
932 if ( aNodes1[ i1 ] == aNodes2[ i2 ] )
936 aNodes1[ iA1 ] = aNodes2[ i2 ];
938 aNodes2[ iB2 ] = aNodes1[ i1 ];
940 GetMeshDS()->ChangeElementNodes( tr1, aNodes1, 3 );
941 GetMeshDS()->ChangeElementNodes( tr2, aNodes2, 3 );
946 // check case of quadratic faces
947 return InverseDiag(tr1,tr2);
950 //=======================================================================
951 //function : getQuadrangleNodes
952 //purpose : fill theQuadNodes - nodes of a quadrangle resulting from
953 // fusion of triangles tr1 and tr2 having shared link on
954 // theNode1 and theNode2
955 //=======================================================================
957 bool getQuadrangleNodes(const SMDS_MeshNode * theQuadNodes [],
958 const SMDS_MeshNode * theNode1,
959 const SMDS_MeshNode * theNode2,
960 const SMDS_MeshElement * tr1,
961 const SMDS_MeshElement * tr2 )
963 if( tr1->NbNodes() != tr2->NbNodes() )
965 // find the 4-th node to insert into tr1
966 const SMDS_MeshNode* n4 = 0;
967 SMDS_ElemIteratorPtr it = tr2->nodesIterator();
969 while ( !n4 && i<3 ) {
970 const SMDS_MeshNode * n = cast2Node( it->next() );
972 bool isDiag = ( n == theNode1 || n == theNode2 );
976 // Make an array of nodes to be in a quadrangle
977 int iNode = 0, iFirstDiag = -1;
978 it = tr1->nodesIterator();
981 const SMDS_MeshNode * n = cast2Node( it->next() );
983 bool isDiag = ( n == theNode1 || n == theNode2 );
985 if ( iFirstDiag < 0 )
987 else if ( iNode - iFirstDiag == 1 )
988 theQuadNodes[ iNode++ ] = n4; // insert the 4-th node between diagonal nodes
990 else if ( n == n4 ) {
991 return false; // tr1 and tr2 should not have all the same nodes
993 theQuadNodes[ iNode++ ] = n;
995 if ( iNode == 3 ) // diagonal nodes have 0 and 2 indices
996 theQuadNodes[ iNode ] = n4;
1001 //=======================================================================
1002 //function : DeleteDiag
1003 //purpose : Replace two neighbour triangles sharing theNode1-theNode2 link
1004 // with a quadrangle built on the same 4 nodes.
1005 // Return false if proper faces not found
1006 //=======================================================================
1008 bool SMESH_MeshEditor::DeleteDiag (const SMDS_MeshNode * theNode1,
1009 const SMDS_MeshNode * theNode2)
1011 myLastCreatedElems.Clear();
1012 myLastCreatedNodes.Clear();
1014 MESSAGE( "::DeleteDiag()" );
1016 const SMDS_MeshElement *tr1, *tr2;
1017 if ( !findTriangles( theNode1, theNode2, tr1, tr2 ))
1020 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( tr1 );
1021 if (!F1) return false;
1022 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( tr2 );
1023 if (!F2) return false;
1024 SMESHDS_Mesh * aMesh = GetMeshDS();
1026 if ((tr1->GetEntityType() == SMDSEntity_Triangle) &&
1027 (tr2->GetEntityType() == SMDSEntity_Triangle)) {
1029 const SMDS_MeshNode* aNodes [ 4 ];
1030 if ( ! getQuadrangleNodes( aNodes, theNode1, theNode2, tr1, tr2 ))
1033 const SMDS_MeshElement* newElem = 0;
1034 newElem = aMesh->AddFace( aNodes[0], aNodes[1], aNodes[2], aNodes[3] );
1035 myLastCreatedElems.Append(newElem);
1036 AddToSameGroups( newElem, tr1, aMesh );
1037 int aShapeId = tr1->getshapeId();
1040 aMesh->SetMeshElementOnShape( newElem, aShapeId );
1042 aMesh->RemoveElement( tr1 );
1043 aMesh->RemoveElement( tr2 );
1048 // check case of quadratic faces
1049 if (tr1->GetEntityType() != SMDSEntity_Quad_Triangle)
1051 if (tr2->GetEntityType() != SMDSEntity_Quad_Triangle)
1055 // 1 +--+--+ 2 tr1: (1 2 4 5 9 7) or (2 4 1 9 7 5) or (4 1 2 7 5 9)
1056 // | /| tr2: (2 3 4 6 8 9) or (3 4 2 8 9 6) or (4 2 3 9 6 8)
1064 vector< const SMDS_MeshNode* > N1;
1065 vector< const SMDS_MeshNode* > N2;
1066 if(!getNodesFromTwoTria(tr1,tr2,N1,N2))
1068 // now we receive following N1 and N2 (using numeration as above image)
1069 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
1070 // i.e. first nodes from both arrays determ new diagonal
1072 const SMDS_MeshNode* aNodes[8];
1082 const SMDS_MeshElement* newElem = 0;
1083 newElem = aMesh->AddFace( aNodes[0], aNodes[1], aNodes[2], aNodes[3],
1084 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
1085 myLastCreatedElems.Append(newElem);
1086 AddToSameGroups( newElem, tr1, aMesh );
1087 int aShapeId = tr1->getshapeId();
1090 aMesh->SetMeshElementOnShape( newElem, aShapeId );
1092 aMesh->RemoveElement( tr1 );
1093 aMesh->RemoveElement( tr2 );
1095 // remove middle node (9)
1096 GetMeshDS()->RemoveNode( N1[4] );
1101 //=======================================================================
1102 //function : Reorient
1103 //purpose : Reverse theElement orientation
1104 //=======================================================================
1106 bool SMESH_MeshEditor::Reorient (const SMDS_MeshElement * theElem)
1108 MESSAGE("Reorient");
1109 myLastCreatedElems.Clear();
1110 myLastCreatedNodes.Clear();
1114 SMDS_ElemIteratorPtr it = theElem->nodesIterator();
1115 if ( !it || !it->more() )
1118 const SMDSAbs_ElementType type = theElem->GetType();
1119 if ( type < SMDSAbs_Edge || type > SMDSAbs_Volume )
1122 const SMDSAbs_EntityType geomType = theElem->GetEntityType();
1123 if ( geomType == SMDSEntity_Polyhedra ) // polyhedron
1125 const SMDS_VtkVolume* aPolyedre =
1126 dynamic_cast<const SMDS_VtkVolume*>( theElem );
1128 MESSAGE("Warning: bad volumic element");
1131 const int nbFaces = aPolyedre->NbFaces();
1132 vector<const SMDS_MeshNode *> poly_nodes;
1133 vector<int> quantities (nbFaces);
1135 // reverse each face of the polyedre
1136 for (int iface = 1; iface <= nbFaces; iface++) {
1137 int inode, nbFaceNodes = aPolyedre->NbFaceNodes(iface);
1138 quantities[iface - 1] = nbFaceNodes;
1140 for (inode = nbFaceNodes; inode >= 1; inode--) {
1141 const SMDS_MeshNode* curNode = aPolyedre->GetFaceNode(iface, inode);
1142 poly_nodes.push_back(curNode);
1145 return GetMeshDS()->ChangePolyhedronNodes( theElem, poly_nodes, quantities );
1147 else // other elements
1149 vector<const SMDS_MeshNode*> nodes( theElem->begin_nodes(), theElem->end_nodes() );
1150 const std::vector<int>& interlace = SMDS_MeshCell::reverseSmdsOrder( geomType, nodes.size() );
1151 if ( interlace.empty() )
1153 std::reverse( nodes.begin(), nodes.end() ); // obsolete, just in case
1157 SMDS_MeshCell::applyInterlace( interlace, nodes );
1159 return GetMeshDS()->ChangeElementNodes( theElem, &nodes[0], nodes.size() );
1164 //================================================================================
1166 * \brief Reorient faces.
1167 * \param theFaces - the faces to reorient. If empty the whole mesh is meant
1168 * \param theDirection - desired direction of normal of \a theFace
1169 * \param theFace - one of \a theFaces that sould be oriented according to
1170 * \a theDirection and whose orientation defines orientation of other faces
1171 * \return number of reoriented faces.
1173 //================================================================================
1175 int SMESH_MeshEditor::Reorient2D (TIDSortedElemSet & theFaces,
1176 const gp_Dir& theDirection,
1177 const SMDS_MeshElement * theFace)
1180 if ( !theFace || theFace->GetType() != SMDSAbs_Face ) return nbReori;
1182 if ( theFaces.empty() )
1184 SMDS_FaceIteratorPtr fIt = GetMeshDS()->facesIterator(/*idInceasingOrder=*/true);
1185 while ( fIt->more() )
1186 theFaces.insert( theFaces.end(), fIt->next() );
1189 // orient theFace according to theDirection
1191 SMESH_MeshAlgos::FaceNormal( theFace, normal, /*normalized=*/false );
1192 if ( normal * theDirection.XYZ() < 0 )
1193 nbReori += Reorient( theFace );
1195 // Orient other faces
1197 set< const SMDS_MeshElement* > startFaces, visitedFaces;
1198 TIDSortedElemSet avoidSet;
1199 set< SMESH_TLink > checkedLinks;
1200 pair< set< SMESH_TLink >::iterator, bool > linkIt_isNew;
1202 if ( theFaces.size() > 1 )// leave 1 face to prevent finding not selected faces
1203 theFaces.erase( theFace );
1204 startFaces.insert( theFace );
1206 int nodeInd1, nodeInd2;
1207 const SMDS_MeshElement* otherFace;
1208 vector< const SMDS_MeshElement* > facesNearLink;
1209 vector< std::pair< int, int > > nodeIndsOfFace;
1211 set< const SMDS_MeshElement* >::iterator startFace = startFaces.begin();
1212 while ( !startFaces.empty() )
1214 startFace = startFaces.begin();
1215 theFace = *startFace;
1216 startFaces.erase( startFace );
1217 if ( !visitedFaces.insert( theFace ).second )
1221 avoidSet.insert(theFace);
1223 NLink link( theFace->GetNode( 0 ), (SMDS_MeshNode *) 0 );
1225 const int nbNodes = theFace->NbCornerNodes();
1226 for ( int i = 0; i < nbNodes; ++i ) // loop on links of theFace
1228 link.second = theFace->GetNode(( i+1 ) % nbNodes );
1229 linkIt_isNew = checkedLinks.insert( link );
1230 if ( !linkIt_isNew.second )
1232 // link has already been checked and won't be encountered more
1233 // if the group (theFaces) is manifold
1234 //checkedLinks.erase( linkIt_isNew.first );
1238 facesNearLink.clear();
1239 nodeIndsOfFace.clear();
1240 while (( otherFace = SMESH_MeshAlgos::FindFaceInSet( link.first, link.second,
1242 &nodeInd1, &nodeInd2 )))
1243 if ( otherFace != theFace)
1245 facesNearLink.push_back( otherFace );
1246 nodeIndsOfFace.push_back( make_pair( nodeInd1, nodeInd2 ));
1247 avoidSet.insert( otherFace );
1249 if ( facesNearLink.size() > 1 )
1251 // NON-MANIFOLD mesh shell !
1252 // select a face most co-directed with theFace,
1253 // other faces won't be visited this time
1255 SMESH_MeshAlgos::FaceNormal( theFace, NF, /*normalized=*/false );
1256 double proj, maxProj = -1;
1257 for ( size_t i = 0; i < facesNearLink.size(); ++i ) {
1258 SMESH_MeshAlgos::FaceNormal( facesNearLink[i], NOF, /*normalized=*/false );
1259 if (( proj = Abs( NF * NOF )) > maxProj ) {
1261 otherFace = facesNearLink[i];
1262 nodeInd1 = nodeIndsOfFace[i].first;
1263 nodeInd2 = nodeIndsOfFace[i].second;
1266 // not to visit rejected faces
1267 for ( size_t i = 0; i < facesNearLink.size(); ++i )
1268 if ( facesNearLink[i] != otherFace && theFaces.size() > 1 )
1269 visitedFaces.insert( facesNearLink[i] );
1271 else if ( facesNearLink.size() == 1 )
1273 otherFace = facesNearLink[0];
1274 nodeInd1 = nodeIndsOfFace.back().first;
1275 nodeInd2 = nodeIndsOfFace.back().second;
1277 if ( otherFace && otherFace != theFace)
1279 // link must be reverse in otherFace if orientation ot otherFace
1280 // is same as that of theFace
1281 if ( abs(nodeInd2-nodeInd1) == 1 ? nodeInd2 > nodeInd1 : nodeInd1 > nodeInd2 )
1283 nbReori += Reorient( otherFace );
1285 startFaces.insert( otherFace );
1288 std::swap( link.first, link.second ); // reverse the link
1294 //================================================================================
1296 * \brief Reorient faces basing on orientation of adjacent volumes.
1297 * \param theFaces - faces to reorient. If empty, all mesh faces are treated.
1298 * \param theVolumes - reference volumes.
1299 * \param theOutsideNormal - to orient faces to have their normal
1300 * pointing either \a outside or \a inside the adjacent volumes.
1301 * \return number of reoriented faces.
1303 //================================================================================
1305 int SMESH_MeshEditor::Reorient2DBy3D (TIDSortedElemSet & theFaces,
1306 TIDSortedElemSet & theVolumes,
1307 const bool theOutsideNormal)
1311 SMDS_ElemIteratorPtr faceIt;
1312 if ( theFaces.empty() )
1313 faceIt = GetMeshDS()->elementsIterator( SMDSAbs_Face );
1315 faceIt = elemSetIterator( theFaces );
1317 vector< const SMDS_MeshNode* > faceNodes;
1318 TIDSortedElemSet checkedVolumes;
1319 set< const SMDS_MeshNode* > faceNodesSet;
1320 SMDS_VolumeTool volumeTool;
1322 while ( faceIt->more() ) // loop on given faces
1324 const SMDS_MeshElement* face = faceIt->next();
1325 if ( face->GetType() != SMDSAbs_Face )
1328 const int nbCornersNodes = face->NbCornerNodes();
1329 faceNodes.assign( face->begin_nodes(), face->end_nodes() );
1331 checkedVolumes.clear();
1332 SMDS_ElemIteratorPtr vIt = faceNodes[ 0 ]->GetInverseElementIterator( SMDSAbs_Volume );
1333 while ( vIt->more() )
1335 const SMDS_MeshElement* volume = vIt->next();
1337 if ( !checkedVolumes.insert( volume ).second )
1339 if ( !theVolumes.empty() && !theVolumes.count( volume ))
1342 // is volume adjacent?
1343 bool allNodesCommon = true;
1344 for ( int iN = 1; iN < nbCornersNodes && allNodesCommon; ++iN )
1345 allNodesCommon = ( volume->GetNodeIndex( faceNodes[ iN ]) > -1 );
1346 if ( !allNodesCommon )
1349 // get nodes of a corresponding volume facet
1350 faceNodesSet.clear();
1351 faceNodesSet.insert( faceNodes.begin(), faceNodes.end() );
1352 volumeTool.Set( volume );
1353 int facetID = volumeTool.GetFaceIndex( faceNodesSet );
1354 if ( facetID < 0 ) continue;
1355 volumeTool.SetExternalNormal();
1356 const SMDS_MeshNode** facetNodes = volumeTool.GetFaceNodes( facetID );
1358 // compare order of faceNodes and facetNodes
1359 const int iQ = 1 + ( nbCornersNodes < faceNodes.size() );
1361 for ( int i = 0; i < 2; ++i )
1363 const SMDS_MeshNode* n = facetNodes[ i*iQ ];
1364 for ( int iN = 0; iN < nbCornersNodes; ++iN )
1365 if ( faceNodes[ iN ] == n )
1371 bool isOutside = Abs( iNN[0]-iNN[1] ) == 1 ? iNN[0] < iNN[1] : iNN[0] > iNN[1];
1372 if ( isOutside != theOutsideNormal )
1373 nbReori += Reorient( face );
1375 } // loop on given faces
1380 //=======================================================================
1381 //function : getBadRate
1383 //=======================================================================
1385 static double getBadRate (const SMDS_MeshElement* theElem,
1386 SMESH::Controls::NumericalFunctorPtr& theCrit)
1388 SMESH::Controls::TSequenceOfXYZ P;
1389 if ( !theElem || !theCrit->GetPoints( theElem, P ))
1391 return theCrit->GetBadRate( theCrit->GetValue( P ), theElem->NbNodes() );
1392 //return theCrit->GetBadRate( theCrit->GetValue( theElem->GetID() ), theElem->NbNodes() );
1395 //=======================================================================
1396 //function : QuadToTri
1397 //purpose : Cut quadrangles into triangles.
1398 // theCrit is used to select a diagonal to cut
1399 //=======================================================================
1401 bool SMESH_MeshEditor::QuadToTri (TIDSortedElemSet & theElems,
1402 SMESH::Controls::NumericalFunctorPtr theCrit)
1404 myLastCreatedElems.Clear();
1405 myLastCreatedNodes.Clear();
1407 if ( !theCrit.get() )
1410 SMESHDS_Mesh * aMesh = GetMeshDS();
1412 Handle(Geom_Surface) surface;
1413 SMESH_MesherHelper helper( *GetMesh() );
1415 TIDSortedElemSet::iterator itElem;
1416 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
1418 const SMDS_MeshElement* elem = *itElem;
1419 if ( !elem || elem->GetType() != SMDSAbs_Face )
1421 if ( elem->NbCornerNodes() != 4 )
1424 // retrieve element nodes
1425 vector< const SMDS_MeshNode* > aNodes( elem->begin_nodes(), elem->end_nodes() );
1427 // compare two sets of possible triangles
1428 double aBadRate1, aBadRate2; // to what extent a set is bad
1429 SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
1430 SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
1431 aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
1433 SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
1434 SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
1435 aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
1437 const int aShapeId = FindShape( elem );
1438 const SMDS_MeshElement* newElem1 = 0;
1439 const SMDS_MeshElement* newElem2 = 0;
1441 if ( !elem->IsQuadratic() ) // split liner quadrangle
1443 // for MaxElementLength2D functor we return minimum diagonal for splitting,
1444 // because aBadRate1=2*len(diagonal 1-3); aBadRate2=2*len(diagonal 2-4)
1445 if ( aBadRate1 <= aBadRate2 ) {
1446 // tr1 + tr2 is better
1447 newElem1 = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
1448 newElem2 = aMesh->AddFace( aNodes[2], aNodes[0], aNodes[1] );
1451 // tr3 + tr4 is better
1452 newElem1 = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
1453 newElem2 = aMesh->AddFace( aNodes[3], aNodes[1], aNodes[2] );
1456 else // split quadratic quadrangle
1458 helper.SetIsQuadratic( true );
1459 helper.SetIsBiQuadratic( aNodes.size() == 9 );
1461 helper.AddTLinks( static_cast< const SMDS_MeshFace* >( elem ));
1462 if ( aNodes.size() == 9 )
1464 helper.SetIsBiQuadratic( true );
1465 if ( aBadRate1 <= aBadRate2 )
1466 helper.AddTLinkNode( aNodes[0], aNodes[2], aNodes[8] );
1468 helper.AddTLinkNode( aNodes[1], aNodes[3], aNodes[8] );
1470 // create a new element
1471 if ( aBadRate1 <= aBadRate2 ) {
1472 newElem1 = helper.AddFace( aNodes[2], aNodes[3], aNodes[0] );
1473 newElem2 = helper.AddFace( aNodes[2], aNodes[0], aNodes[1] );
1476 newElem1 = helper.AddFace( aNodes[3], aNodes[0], aNodes[1] );
1477 newElem2 = helper.AddFace( aNodes[3], aNodes[1], aNodes[2] );
1481 // care of a new element
1483 myLastCreatedElems.Append(newElem1);
1484 myLastCreatedElems.Append(newElem2);
1485 AddToSameGroups( newElem1, elem, aMesh );
1486 AddToSameGroups( newElem2, elem, aMesh );
1488 // put a new triangle on the same shape
1490 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
1491 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
1493 aMesh->RemoveElement( elem );
1498 //=======================================================================
1500 * \brief Split each of given quadrangles into 4 triangles.
1501 * \param theElems - The faces to be splitted. If empty all faces are split.
1503 //=======================================================================
1505 void SMESH_MeshEditor::QuadTo4Tri (TIDSortedElemSet & theElems)
1507 myLastCreatedElems.Clear();
1508 myLastCreatedNodes.Clear();
1510 SMESH_MesherHelper helper( *GetMesh() );
1511 helper.SetElementsOnShape( true );
1513 SMDS_ElemIteratorPtr faceIt;
1514 if ( theElems.empty() ) faceIt = GetMeshDS()->elementsIterator(SMDSAbs_Face);
1515 else faceIt = elemSetIterator( theElems );
1518 gp_XY uv [9]; uv[8] = gp_XY(0,0);
1520 vector< const SMDS_MeshNode* > nodes;
1521 SMESHDS_SubMesh* subMeshDS;
1523 Handle(Geom_Surface) surface;
1524 TopLoc_Location loc;
1526 while ( faceIt->more() )
1528 const SMDS_MeshElement* quad = faceIt->next();
1529 if ( !quad || quad->NbCornerNodes() != 4 )
1532 // get a surface the quad is on
1534 if ( quad->getshapeId() < 1 )
1537 helper.SetSubShape( 0 );
1540 else if ( quad->getshapeId() != helper.GetSubShapeID() )
1542 helper.SetSubShape( quad->getshapeId() );
1543 if ( !helper.GetSubShape().IsNull() &&
1544 helper.GetSubShape().ShapeType() == TopAbs_FACE )
1546 F = TopoDS::Face( helper.GetSubShape() );
1547 surface = BRep_Tool::Surface( F, loc );
1548 subMeshDS = GetMeshDS()->MeshElements( quad->getshapeId() );
1552 helper.SetSubShape( 0 );
1557 // create a central node
1559 const SMDS_MeshNode* nCentral;
1560 nodes.assign( quad->begin_nodes(), quad->end_nodes() );
1562 if ( nodes.size() == 9 )
1564 nCentral = nodes.back();
1571 for ( ; iN < nodes.size(); ++iN )
1572 xyz[ iN ] = SMESH_TNodeXYZ( nodes[ iN ] );
1574 for ( ; iN < 8; ++iN ) // mid-side points of a linear qudrangle
1575 xyz[ iN ] = 0.5 * ( xyz[ iN - 4 ] + xyz[( iN - 3 )%4 ] );
1577 xyz[ 8 ] = helper.calcTFI( 0.5, 0.5,
1578 xyz[0], xyz[1], xyz[2], xyz[3],
1579 xyz[4], xyz[5], xyz[6], xyz[7] );
1583 for ( ; iN < nodes.size(); ++iN )
1584 uv[ iN ] = helper.GetNodeUV( F, nodes[iN], nodes[(iN+2)%4], &checkUV );
1586 for ( ; iN < 8; ++iN ) // UV of mid-side points of a linear qudrangle
1587 uv[ iN ] = helper.GetMiddleUV( surface, uv[ iN - 4 ], uv[( iN - 3 )%4 ] );
1589 uv[ 8 ] = helper.calcTFI( 0.5, 0.5,
1590 uv[0], uv[1], uv[2], uv[3],
1591 uv[4], uv[5], uv[6], uv[7] );
1593 gp_Pnt p = surface->Value( uv[8].X(), uv[8].Y() ).Transformed( loc );
1597 nCentral = helper.AddNode( xyz[8].X(), xyz[8].Y(), xyz[8].Z(), /*id=*/0,
1598 uv[8].X(), uv[8].Y() );
1599 myLastCreatedNodes.Append( nCentral );
1602 // create 4 triangles
1604 GetMeshDS()->RemoveFreeElement( quad, subMeshDS, /*fromGroups=*/false );
1606 helper.SetIsQuadratic ( nodes.size() > 4 );
1607 helper.SetIsBiQuadratic( nodes.size() == 9 );
1608 if ( helper.GetIsQuadratic() )
1609 helper.AddTLinks( static_cast< const SMDS_MeshFace*>( quad ));
1611 for ( int i = 0; i < 4; ++i )
1613 SMDS_MeshElement* tria = helper.AddFace( nodes[ i ],
1616 ReplaceElemInGroups( tria, quad, GetMeshDS() );
1617 myLastCreatedElems.Append( tria );
1622 //=======================================================================
1623 //function : BestSplit
1624 //purpose : Find better diagonal for cutting.
1625 //=======================================================================
1627 int SMESH_MeshEditor::BestSplit (const SMDS_MeshElement* theQuad,
1628 SMESH::Controls::NumericalFunctorPtr theCrit)
1630 myLastCreatedElems.Clear();
1631 myLastCreatedNodes.Clear();
1636 if (!theQuad || theQuad->GetType() != SMDSAbs_Face )
1639 if( theQuad->NbNodes()==4 ||
1640 (theQuad->NbNodes()==8 && theQuad->IsQuadratic()) ) {
1642 // retrieve element nodes
1643 const SMDS_MeshNode* aNodes [4];
1644 SMDS_ElemIteratorPtr itN = theQuad->nodesIterator();
1646 //while (itN->more())
1648 aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
1650 // compare two sets of possible triangles
1651 double aBadRate1, aBadRate2; // to what extent a set is bad
1652 SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
1653 SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
1654 aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
1656 SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
1657 SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
1658 aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
1659 // for MaxElementLength2D functor we return minimum diagonal for splitting,
1660 // because aBadRate1=2*len(diagonal 1-3); aBadRate2=2*len(diagonal 2-4)
1661 if (aBadRate1 <= aBadRate2) // tr1 + tr2 is better
1662 return 1; // diagonal 1-3
1664 return 2; // diagonal 2-4
1671 // Methods of splitting volumes into tetra
1673 const int theHexTo5_1[5*4+1] =
1675 0, 1, 2, 5, 0, 4, 5, 7, 0, 2, 3, 7, 2, 5, 6, 7, 0, 5, 2, 7, -1
1677 const int theHexTo5_2[5*4+1] =
1679 1, 2, 3, 6, 1, 4, 5, 6, 0, 1, 3, 4, 3, 4, 6, 7, 1, 3, 4, 6, -1
1681 const int* theHexTo5[2] = { theHexTo5_1, theHexTo5_2 };
1683 const int theHexTo6_1[6*4+1] =
1685 1, 5, 6, 0, 0, 1, 2, 6, 0, 4, 5, 6, 0, 4, 6, 7, 0, 2, 3, 6, 0, 3, 7, 6, -1
1687 const int theHexTo6_2[6*4+1] =
1689 2, 6, 7, 1, 1, 2, 3, 7, 1, 5, 6, 7, 1, 5, 7, 4, 1, 3, 0, 7, 1, 0, 4, 7, -1
1691 const int theHexTo6_3[6*4+1] =
1693 3, 7, 4, 2, 2, 3, 0, 4, 2, 6, 7, 4, 2, 6, 4, 5, 2, 0, 1, 4, 2, 1, 5, 4, -1
1695 const int theHexTo6_4[6*4+1] =
1697 0, 4, 5, 3, 3, 0, 1, 5, 3, 7, 4, 5, 3, 7, 5, 6, 3, 1, 2, 5, 3, 2, 6, 5, -1
1699 const int* theHexTo6[4] = { theHexTo6_1, theHexTo6_2, theHexTo6_3, theHexTo6_4 };
1701 const int thePyraTo2_1[2*4+1] =
1703 0, 1, 2, 4, 0, 2, 3, 4, -1
1705 const int thePyraTo2_2[2*4+1] =
1707 1, 2, 3, 4, 1, 3, 0, 4, -1
1709 const int* thePyraTo2[2] = { thePyraTo2_1, thePyraTo2_2 };
1711 const int thePentaTo3_1[3*4+1] =
1713 0, 1, 2, 3, 1, 3, 4, 2, 2, 3, 4, 5, -1
1715 const int thePentaTo3_2[3*4+1] =
1717 1, 2, 0, 4, 2, 4, 5, 0, 0, 4, 5, 3, -1
1719 const int thePentaTo3_3[3*4+1] =
1721 2, 0, 1, 5, 0, 5, 3, 1, 1, 5, 3, 4, -1
1723 const int thePentaTo3_4[3*4+1] =
1725 0, 1, 2, 3, 1, 3, 4, 5, 2, 3, 1, 5, -1
1727 const int thePentaTo3_5[3*4+1] =
1729 1, 2, 0, 4, 2, 4, 5, 3, 0, 4, 2, 3, -1
1731 const int thePentaTo3_6[3*4+1] =
1733 2, 0, 1, 5, 0, 5, 3, 4, 1, 5, 0, 4, -1
1735 const int* thePentaTo3[6] = { thePentaTo3_1, thePentaTo3_2, thePentaTo3_3,
1736 thePentaTo3_4, thePentaTo3_5, thePentaTo3_6 };
1738 // Methods of splitting hexahedron into prisms
1740 const int theHexTo4Prisms_BT[6*4+1] = // bottom-top
1742 0, 1, 8, 4, 5, 9, 1, 2, 8, 5, 6, 9, 2, 3, 8, 6, 7, 9, 3, 0, 8, 7, 4, 9, -1
1744 const int theHexTo4Prisms_LR[6*4+1] = // left-right
1746 1, 0, 8, 2, 3, 9, 0, 4, 8, 3, 7, 9, 4, 5, 8, 7, 6, 9, 5, 1, 8, 6, 2, 9, -1
1748 const int theHexTo4Prisms_FB[6*4+1] = // front-back
1750 0, 3, 9, 1, 2, 8, 3, 7, 9, 2, 6, 8, 7, 4, 9, 6, 5, 8, 4, 0, 9, 5, 1, 8, -1
1753 const int theHexTo2Prisms_BT_1[6*2+1] =
1755 0, 1, 3, 4, 5, 7, 1, 2, 3, 5, 6, 7, -1
1757 const int theHexTo2Prisms_BT_2[6*2+1] =
1759 0, 1, 2, 4, 5, 6, 0, 2, 3, 4, 6, 7, -1
1761 const int* theHexTo2Prisms_BT[2] = { theHexTo2Prisms_BT_1, theHexTo2Prisms_BT_2 };
1763 const int theHexTo2Prisms_LR_1[6*2+1] =
1765 1, 0, 4, 2, 3, 7, 1, 4, 5, 2, 7, 6, -1
1767 const int theHexTo2Prisms_LR_2[6*2+1] =
1769 1, 0, 4, 2, 3, 7, 1, 4, 5, 2, 7, 6, -1
1771 const int* theHexTo2Prisms_LR[2] = { theHexTo2Prisms_LR_1, theHexTo2Prisms_LR_2 };
1773 const int theHexTo2Prisms_FB_1[6*2+1] =
1775 0, 3, 4, 1, 2, 5, 3, 7, 4, 2, 6, 5, -1
1777 const int theHexTo2Prisms_FB_2[6*2+1] =
1779 0, 3, 7, 1, 2, 7, 0, 7, 4, 1, 6, 5, -1
1781 const int* theHexTo2Prisms_FB[2] = { theHexTo2Prisms_FB_1, theHexTo2Prisms_FB_2 };
1784 struct TTriangleFacet //!< stores indices of three nodes of tetra facet
1787 TTriangleFacet(int n1, int n2, int n3): _n1(n1), _n2(n2), _n3(n3) {}
1788 bool contains(int n) const { return ( n == _n1 || n == _n2 || n == _n3 ); }
1789 bool hasAdjacentVol( const SMDS_MeshElement* elem,
1790 const SMDSAbs_GeometryType geom = SMDSGeom_TETRA) const;
1796 const int* _connectivity; //!< foursomes of tetra connectivy finished by -1
1797 bool _baryNode; //!< additional node is to be created at cell barycenter
1798 bool _ownConn; //!< to delete _connectivity in destructor
1799 map<int, const SMDS_MeshNode*> _faceBaryNode; //!< map face index to node at BC of face
1801 TSplitMethod( int nbTet=0, const int* conn=0, bool addNode=false)
1802 : _nbSplits(nbTet), _nbCorners(4), _connectivity(conn), _baryNode(addNode), _ownConn(false) {}
1803 ~TSplitMethod() { if ( _ownConn ) delete [] _connectivity; _connectivity = 0; }
1804 bool hasFacet( const TTriangleFacet& facet ) const
1806 if ( _nbCorners == 4 )
1808 const int* tetConn = _connectivity;
1809 for ( ; tetConn[0] >= 0; tetConn += 4 )
1810 if (( facet.contains( tetConn[0] ) +
1811 facet.contains( tetConn[1] ) +
1812 facet.contains( tetConn[2] ) +
1813 facet.contains( tetConn[3] )) == 3 )
1816 else // prism, _nbCorners == 6
1818 const int* prismConn = _connectivity;
1819 for ( ; prismConn[0] >= 0; prismConn += 6 )
1821 if (( facet.contains( prismConn[0] ) &&
1822 facet.contains( prismConn[1] ) &&
1823 facet.contains( prismConn[2] ))
1825 ( facet.contains( prismConn[3] ) &&
1826 facet.contains( prismConn[4] ) &&
1827 facet.contains( prismConn[5] )))
1835 //=======================================================================
1837 * \brief return TSplitMethod for the given element to split into tetrahedra
1839 //=======================================================================
1841 TSplitMethod getTetraSplitMethod( SMDS_VolumeTool& vol, const int theMethodFlags)
1843 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
1845 // at HEXA_TO_24 method, each face of volume is split into triangles each based on
1846 // an edge and a face barycenter; tertaherdons are based on triangles and
1847 // a volume barycenter
1848 const bool is24TetMode = ( theMethodFlags == SMESH_MeshEditor::HEXA_TO_24 );
1850 // Find out how adjacent volumes are split
1852 vector < list< TTriangleFacet > > triaSplitsByFace( vol.NbFaces() ); // splits of each side
1853 int hasAdjacentSplits = 0, maxTetConnSize = 0;
1854 for ( int iF = 0; iF < vol.NbFaces(); ++iF )
1856 int nbNodes = vol.NbFaceNodes( iF ) / iQ;
1857 maxTetConnSize += 4 * ( nbNodes - (is24TetMode ? 0 : 2));
1858 if ( nbNodes < 4 ) continue;
1860 list< TTriangleFacet >& triaSplits = triaSplitsByFace[ iF ];
1861 const int* nInd = vol.GetFaceNodesIndices( iF );
1864 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
1865 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
1866 if ( t012.hasAdjacentVol( vol.Element() )) triaSplits.push_back( t012 );
1867 else if ( t123.hasAdjacentVol( vol.Element() )) triaSplits.push_back( t123 );
1871 int iCom = 0; // common node of triangle faces to split into
1872 for ( int iVar = 0; iVar < nbNodes; ++iVar, ++iCom )
1874 TTriangleFacet t012( nInd[ iQ * ( iCom )],
1875 nInd[ iQ * ( (iCom+1)%nbNodes )],
1876 nInd[ iQ * ( (iCom+2)%nbNodes )]);
1877 TTriangleFacet t023( nInd[ iQ * ( iCom )],
1878 nInd[ iQ * ( (iCom+2)%nbNodes )],
1879 nInd[ iQ * ( (iCom+3)%nbNodes )]);
1880 if ( t012.hasAdjacentVol( vol.Element() ) && t023.hasAdjacentVol( vol.Element() ))
1882 triaSplits.push_back( t012 );
1883 triaSplits.push_back( t023 );
1888 if ( !triaSplits.empty() )
1889 hasAdjacentSplits = true;
1892 // Among variants of split method select one compliant with adjacent volumes
1894 TSplitMethod method;
1895 if ( !vol.Element()->IsPoly() && !is24TetMode )
1897 int nbVariants = 2, nbTet = 0;
1898 const int** connVariants = 0;
1899 switch ( vol.Element()->GetEntityType() )
1901 case SMDSEntity_Hexa:
1902 case SMDSEntity_Quad_Hexa:
1903 case SMDSEntity_TriQuad_Hexa:
1904 if ( theMethodFlags == SMESH_MeshEditor::HEXA_TO_5 )
1905 connVariants = theHexTo5, nbTet = 5;
1907 connVariants = theHexTo6, nbTet = 6, nbVariants = 4;
1909 case SMDSEntity_Pyramid:
1910 case SMDSEntity_Quad_Pyramid:
1911 connVariants = thePyraTo2; nbTet = 2;
1913 case SMDSEntity_Penta:
1914 case SMDSEntity_Quad_Penta:
1915 connVariants = thePentaTo3; nbTet = 3; nbVariants = 6;
1920 for ( int variant = 0; variant < nbVariants && method._nbSplits == 0; ++variant )
1922 // check method compliancy with adjacent tetras,
1923 // all found splits must be among facets of tetras described by this method
1924 method = TSplitMethod( nbTet, connVariants[variant] );
1925 if ( hasAdjacentSplits && method._nbSplits > 0 )
1927 bool facetCreated = true;
1928 for ( int iF = 0; facetCreated && iF < triaSplitsByFace.size(); ++iF )
1930 list< TTriangleFacet >::const_iterator facet = triaSplitsByFace[iF].begin();
1931 for ( ; facetCreated && facet != triaSplitsByFace[iF].end(); ++facet )
1932 facetCreated = method.hasFacet( *facet );
1934 if ( !facetCreated )
1935 method = TSplitMethod(0); // incompatible method
1939 if ( method._nbSplits < 1 )
1941 // No standard method is applicable, use a generic solution:
1942 // each facet of a volume is split into triangles and
1943 // each of triangles and a volume barycenter form a tetrahedron.
1945 const bool isHex27 = ( vol.Element()->GetEntityType() == SMDSEntity_TriQuad_Hexa );
1947 int* connectivity = new int[ maxTetConnSize + 1 ];
1948 method._connectivity = connectivity;
1949 method._ownConn = true;
1950 method._baryNode = !isHex27; // to create central node or not
1953 int baryCenInd = vol.NbNodes() - int( isHex27 );
1954 for ( int iF = 0; iF < vol.NbFaces(); ++iF )
1956 const int nbNodes = vol.NbFaceNodes( iF ) / iQ;
1957 const int* nInd = vol.GetFaceNodesIndices( iF );
1958 // find common node of triangle facets of tetra to create
1959 int iCommon = 0; // index in linear numeration
1960 const list< TTriangleFacet >& triaSplits = triaSplitsByFace[ iF ];
1961 if ( !triaSplits.empty() )
1964 const TTriangleFacet* facet = &triaSplits.front();
1965 for ( ; iCommon < nbNodes-1 ; ++iCommon )
1966 if ( facet->contains( nInd[ iQ * iCommon ]) &&
1967 facet->contains( nInd[ iQ * ((iCommon+2)%nbNodes) ]))
1970 else if ( nbNodes > 3 && !is24TetMode )
1972 // find the best method of splitting into triangles by aspect ratio
1973 SMESH::Controls::NumericalFunctorPtr aspectRatio( new SMESH::Controls::AspectRatio);
1974 map< double, int > badness2iCommon;
1975 const SMDS_MeshNode** nodes = vol.GetFaceNodes( iF );
1976 int nbVariants = ( nbNodes == 4 ? 2 : nbNodes );
1977 for ( int iVar = 0; iVar < nbVariants; ++iVar, ++iCommon )
1980 for ( int iLast = iCommon+2; iLast < iCommon+nbNodes; ++iLast )
1982 SMDS_FaceOfNodes tria ( nodes[ iQ*( iCommon )],
1983 nodes[ iQ*((iLast-1)%nbNodes)],
1984 nodes[ iQ*((iLast )%nbNodes)]);
1985 badness += getBadRate( &tria, aspectRatio );
1987 badness2iCommon.insert( make_pair( badness, iCommon ));
1989 // use iCommon with lowest badness
1990 iCommon = badness2iCommon.begin()->second;
1992 if ( iCommon >= nbNodes )
1993 iCommon = 0; // something wrong
1995 // fill connectivity of tetrahedra based on a current face
1996 int nbTet = nbNodes - 2;
1997 if ( is24TetMode && nbNodes > 3 && triaSplits.empty())
2002 faceBaryCenInd = vol.GetCenterNodeIndex( iF );
2003 method._faceBaryNode[ iF ] = vol.GetNodes()[ faceBaryCenInd ];
2007 method._faceBaryNode[ iF ] = 0;
2008 faceBaryCenInd = baryCenInd + method._faceBaryNode.size();
2011 for ( int i = 0; i < nbTet; ++i )
2013 int i1 = i, i2 = (i+1) % nbNodes;
2014 if ( !vol.IsFaceExternal( iF )) swap( i1, i2 );
2015 connectivity[ connSize++ ] = nInd[ iQ * i1 ];
2016 connectivity[ connSize++ ] = nInd[ iQ * i2 ];
2017 connectivity[ connSize++ ] = faceBaryCenInd;
2018 connectivity[ connSize++ ] = baryCenInd;
2023 for ( int i = 0; i < nbTet; ++i )
2025 int i1 = (iCommon+1+i) % nbNodes, i2 = (iCommon+2+i) % nbNodes;
2026 if ( !vol.IsFaceExternal( iF )) swap( i1, i2 );
2027 connectivity[ connSize++ ] = nInd[ iQ * iCommon ];
2028 connectivity[ connSize++ ] = nInd[ iQ * i1 ];
2029 connectivity[ connSize++ ] = nInd[ iQ * i2 ];
2030 connectivity[ connSize++ ] = baryCenInd;
2033 method._nbSplits += nbTet;
2035 } // loop on volume faces
2037 connectivity[ connSize++ ] = -1;
2039 } // end of generic solution
2043 //=======================================================================
2045 * \brief return TSplitMethod to split haxhedron into prisms
2047 //=======================================================================
2049 TSplitMethod getPrismSplitMethod( SMDS_VolumeTool& vol,
2050 const int methodFlags,
2051 const int facetToSplit)
2053 // order of facets in HEX according to SMDS_VolumeTool::Hexa_F :
2055 const int iF = ( facetToSplit < 2 ) ? 0 : 1 + ( facetToSplit-2 ) % 2; // [0,1,2]
2057 if ( methodFlags == SMESH_MeshEditor::HEXA_TO_4_PRISMS )
2059 static TSplitMethod to4methods[4]; // order BT, LR, FB
2060 if ( to4methods[iF]._nbSplits == 0 )
2064 to4methods[iF]._connectivity = theHexTo4Prisms_BT;
2065 to4methods[iF]._faceBaryNode[ 0 ] = 0;
2066 to4methods[iF]._faceBaryNode[ 1 ] = 0;
2069 to4methods[iF]._connectivity = theHexTo4Prisms_LR;
2070 to4methods[iF]._faceBaryNode[ 2 ] = 0;
2071 to4methods[iF]._faceBaryNode[ 4 ] = 0;
2074 to4methods[iF]._connectivity = theHexTo4Prisms_FB;
2075 to4methods[iF]._faceBaryNode[ 3 ] = 0;
2076 to4methods[iF]._faceBaryNode[ 5 ] = 0;
2078 default: return to4methods[3];
2080 to4methods[iF]._nbSplits = 4;
2081 to4methods[iF]._nbCorners = 6;
2083 return to4methods[iF];
2085 // else if ( methodFlags == HEXA_TO_2_PRISMS )
2087 TSplitMethod method;
2089 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
2091 const int nbVariants = 2, nbSplits = 2;
2092 const int** connVariants = 0;
2094 case 0: connVariants = theHexTo2Prisms_BT; break;
2095 case 1: connVariants = theHexTo2Prisms_LR; break;
2096 case 2: connVariants = theHexTo2Prisms_FB; break;
2097 default: return method;
2100 // look for prisms adjacent via facetToSplit and an opposite one
2101 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2103 int iFacet = is2nd ? vol.GetOppFaceIndexOfHex( facetToSplit ) : facetToSplit;
2104 int nbNodes = vol.NbFaceNodes( iFacet ) / iQ;
2105 if ( nbNodes != 4 ) return method;
2107 const int* nInd = vol.GetFaceNodesIndices( iFacet );
2108 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
2109 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
2111 if ( t012.hasAdjacentVol( vol.Element(), SMDSGeom_PENTA ))
2113 else if ( t123.hasAdjacentVol( vol.Element(), SMDSGeom_PENTA ))
2118 // there are adjacent prism
2119 for ( int variant = 0; variant < nbVariants; ++variant )
2121 // check method compliancy with adjacent prisms,
2122 // the found prism facets must be among facets of prisms described by current method
2123 method._nbSplits = nbSplits;
2124 method._nbCorners = 6;
2125 method._connectivity = connVariants[ variant ];
2126 if ( method.hasFacet( *t ))
2131 // No adjacent prisms. Select a variant with a best aspect ratio.
2133 double badness[2] = { 0, 0 };
2134 static SMESH::Controls::NumericalFunctorPtr aspectRatio( new SMESH::Controls::AspectRatio);
2135 const SMDS_MeshNode** nodes = vol.GetNodes();
2136 for ( int variant = 0; variant < nbVariants; ++variant )
2137 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2139 int iFacet = is2nd ? vol.GetOppFaceIndexOfHex( facetToSplit ) : facetToSplit;
2140 const int* nInd = vol.GetFaceNodesIndices( iFacet );
2142 method._connectivity = connVariants[ variant ];
2143 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
2144 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
2145 TTriangleFacet* t = ( method.hasFacet( t012 )) ? & t012 : & t123;
2147 SMDS_FaceOfNodes tria ( nodes[ t->_n1 ],
2150 badness[ variant ] += getBadRate( &tria, aspectRatio );
2152 const int iBetter = ( badness[1] < badness[0] && badness[0]-badness[1] > 0.1 * badness[0] );
2154 method._nbSplits = nbSplits;
2155 method._nbCorners = 6;
2156 method._connectivity = connVariants[ iBetter ];
2161 //================================================================================
2163 * \brief Check if there is a tetraherdon adjacent to the given element via this facet
2165 //================================================================================
2167 bool TTriangleFacet::hasAdjacentVol( const SMDS_MeshElement* elem,
2168 const SMDSAbs_GeometryType geom ) const
2170 // find the tetrahedron including the three nodes of facet
2171 const SMDS_MeshNode* n1 = elem->GetNode(_n1);
2172 const SMDS_MeshNode* n2 = elem->GetNode(_n2);
2173 const SMDS_MeshNode* n3 = elem->GetNode(_n3);
2174 SMDS_ElemIteratorPtr volIt1 = n1->GetInverseElementIterator(SMDSAbs_Volume);
2175 while ( volIt1->more() )
2177 const SMDS_MeshElement* v = volIt1->next();
2178 if ( v->GetGeomType() != geom )
2180 const int lastCornerInd = v->NbCornerNodes() - 1;
2181 if ( v->IsQuadratic() && v->GetNodeIndex( n1 ) > lastCornerInd )
2182 continue; // medium node not allowed
2183 const int ind2 = v->GetNodeIndex( n2 );
2184 if ( ind2 < 0 || lastCornerInd < ind2 )
2186 const int ind3 = v->GetNodeIndex( n3 );
2187 if ( ind3 < 0 || lastCornerInd < ind3 )
2194 //=======================================================================
2196 * \brief A key of a face of volume
2198 //=======================================================================
2200 struct TVolumeFaceKey: pair< pair< int, int>, pair< int, int> >
2202 TVolumeFaceKey( SMDS_VolumeTool& vol, int iF )
2204 TIDSortedNodeSet sortedNodes;
2205 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
2206 int nbNodes = vol.NbFaceNodes( iF );
2207 const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iF );
2208 for ( int i = 0; i < nbNodes; i += iQ )
2209 sortedNodes.insert( fNodes[i] );
2210 TIDSortedNodeSet::iterator n = sortedNodes.begin();
2211 first.first = (*(n++))->GetID();
2212 first.second = (*(n++))->GetID();
2213 second.first = (*(n++))->GetID();
2214 second.second = ( sortedNodes.size() > 3 ) ? (*(n++))->GetID() : 0;
2219 //=======================================================================
2220 //function : SplitVolumes
2221 //purpose : Split volume elements into tetrahedra or prisms.
2222 // If facet ID < 0, element is split into tetrahedra,
2223 // else a hexahedron is split into prisms so that the given facet is
2224 // split into triangles
2225 //=======================================================================
2227 void SMESH_MeshEditor::SplitVolumes (const TFacetOfElem & theElems,
2228 const int theMethodFlags)
2230 SMDS_VolumeTool volTool;
2231 SMESH_MesherHelper helper( *GetMesh()), fHelper(*GetMesh());
2232 fHelper.ToFixNodeParameters( true );
2234 SMESHDS_SubMesh* subMesh = 0;//GetMeshDS()->MeshElements(1);
2235 SMESHDS_SubMesh* fSubMesh = 0;//subMesh;
2237 SMESH_SequenceOfElemPtr newNodes, newElems;
2239 // map face of volume to it's baricenrtic node
2240 map< TVolumeFaceKey, const SMDS_MeshNode* > volFace2BaryNode;
2242 vector<const SMDS_MeshElement* > splitVols;
2244 TFacetOfElem::const_iterator elem2facet = theElems.begin();
2245 for ( ; elem2facet != theElems.end(); ++elem2facet )
2247 const SMDS_MeshElement* elem = elem2facet->first;
2248 const int facetToSplit = elem2facet->second;
2249 if ( elem->GetType() != SMDSAbs_Volume )
2251 const SMDSAbs_EntityType geomType = elem->GetEntityType();
2252 if ( geomType == SMDSEntity_Tetra || geomType == SMDSEntity_Quad_Tetra )
2255 if ( !volTool.Set( elem, /*ignoreCentralNodes=*/false )) continue; // strange...
2257 TSplitMethod splitMethod = ( facetToSplit < 0 ?
2258 getTetraSplitMethod( volTool, theMethodFlags ) :
2259 getPrismSplitMethod( volTool, theMethodFlags, facetToSplit ));
2260 if ( splitMethod._nbSplits < 1 ) continue;
2262 // find submesh to add new tetras to
2263 if ( !subMesh || !subMesh->Contains( elem ))
2265 int shapeID = FindShape( elem );
2266 helper.SetSubShape( shapeID ); // helper will add tetras to the found submesh
2267 subMesh = GetMeshDS()->MeshElements( shapeID );
2270 if ( elem->IsQuadratic() )
2273 // add quadratic links to the helper
2274 for ( int iF = 0; iF < volTool.NbFaces(); ++iF )
2276 const SMDS_MeshNode** fNodes = volTool.GetFaceNodes( iF );
2277 int nbN = volTool.NbFaceNodes( iF ) - bool( volTool.GetCenterNodeIndex(iF) > 0 );
2278 for ( int iN = 0; iN < nbN; iN += iQ )
2279 helper.AddTLinkNode( fNodes[iN], fNodes[iN+2], fNodes[iN+1] );
2281 helper.SetIsQuadratic( true );
2286 helper.SetIsQuadratic( false );
2288 vector<const SMDS_MeshNode*> nodes( volTool.GetNodes(),
2289 volTool.GetNodes() + elem->NbNodes() );
2290 helper.SetElementsOnShape( true );
2291 if ( splitMethod._baryNode )
2293 // make a node at barycenter
2294 volTool.GetBaryCenter( bc[0], bc[1], bc[2] );
2295 SMDS_MeshNode* gcNode = helper.AddNode( bc[0], bc[1], bc[2] );
2296 nodes.push_back( gcNode );
2297 newNodes.Append( gcNode );
2299 if ( !splitMethod._faceBaryNode.empty() )
2301 // make or find baricentric nodes of faces
2302 map<int, const SMDS_MeshNode*>::iterator iF_n = splitMethod._faceBaryNode.begin();
2303 for ( ; iF_n != splitMethod._faceBaryNode.end(); ++iF_n )
2305 map< TVolumeFaceKey, const SMDS_MeshNode* >::iterator f_n =
2306 volFace2BaryNode.insert
2307 ( make_pair( TVolumeFaceKey( volTool,iF_n->first ), iF_n->second )).first;
2310 volTool.GetFaceBaryCenter( iF_n->first, bc[0], bc[1], bc[2] );
2311 newNodes.Append( f_n->second = helper.AddNode( bc[0], bc[1], bc[2] ));
2313 nodes.push_back( iF_n->second = f_n->second );
2318 splitVols.resize( splitMethod._nbSplits ); // splits of a volume
2319 const int* volConn = splitMethod._connectivity;
2320 if ( splitMethod._nbCorners == 4 ) // tetra
2321 for ( int i = 0; i < splitMethod._nbSplits; ++i, volConn += splitMethod._nbCorners )
2322 newElems.Append( splitVols[ i ] = helper.AddVolume( nodes[ volConn[0] ],
2323 nodes[ volConn[1] ],
2324 nodes[ volConn[2] ],
2325 nodes[ volConn[3] ]));
2327 for ( int i = 0; i < splitMethod._nbSplits; ++i, volConn += splitMethod._nbCorners )
2328 newElems.Append( splitVols[ i ] = helper.AddVolume( nodes[ volConn[0] ],
2329 nodes[ volConn[1] ],
2330 nodes[ volConn[2] ],
2331 nodes[ volConn[3] ],
2332 nodes[ volConn[4] ],
2333 nodes[ volConn[5] ]));
2335 ReplaceElemInGroups( elem, splitVols, GetMeshDS() );
2337 // Split faces on sides of the split volume
2339 const SMDS_MeshNode** volNodes = volTool.GetNodes();
2340 for ( int iF = 0; iF < volTool.NbFaces(); ++iF )
2342 const int nbNodes = volTool.NbFaceNodes( iF ) / iQ;
2343 if ( nbNodes < 4 ) continue;
2345 // find an existing face
2346 vector<const SMDS_MeshNode*> fNodes( volTool.GetFaceNodes( iF ),
2347 volTool.GetFaceNodes( iF ) + volTool.NbFaceNodes( iF ));
2348 while ( const SMDS_MeshElement* face = GetMeshDS()->FindElement( fNodes, SMDSAbs_Face,
2349 /*noMedium=*/false))
2352 helper.SetElementsOnShape( false );
2353 vector< const SMDS_MeshElement* > triangles;
2355 // find submesh to add new triangles in
2356 if ( !fSubMesh || !fSubMesh->Contains( face ))
2358 int shapeID = FindShape( face );
2359 fSubMesh = GetMeshDS()->MeshElements( shapeID );
2361 map<int, const SMDS_MeshNode*>::iterator iF_n = splitMethod._faceBaryNode.find(iF);
2362 if ( iF_n != splitMethod._faceBaryNode.end() )
2364 const SMDS_MeshNode *baryNode = iF_n->second;
2365 for ( int iN = 0; iN < nbNodes*iQ; iN += iQ )
2367 const SMDS_MeshNode* n1 = fNodes[iN];
2368 const SMDS_MeshNode *n2 = fNodes[(iN+iQ)%(nbNodes*iQ)];
2369 const SMDS_MeshNode *n3 = baryNode;
2370 if ( !volTool.IsFaceExternal( iF ))
2372 triangles.push_back( helper.AddFace( n1,n2,n3 ));
2374 if ( fSubMesh ) // update position of the bary node on geometry
2377 subMesh->RemoveNode( baryNode, false );
2378 GetMeshDS()->SetNodeOnFace( baryNode, fSubMesh->GetID() );
2379 const TopoDS_Shape& s = GetMeshDS()->IndexToShape( fSubMesh->GetID() );
2380 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2382 fHelper.SetSubShape( s );
2383 gp_XY uv( 1e100, 1e100 );
2385 if ( !fHelper.CheckNodeUV( TopoDS::Face( s ), baryNode,
2386 uv, /*tol=*/1e-7, /*force=*/true, distXYZ ) &&
2389 // node is too far from the surface
2390 GetMeshDS()->MoveNode( baryNode, distXYZ[1], distXYZ[2], distXYZ[3] );
2391 const_cast<SMDS_MeshNode*>( baryNode )->SetPosition
2392 ( SMDS_PositionPtr( new SMDS_FacePosition( uv.X(), uv.Y() )));
2399 // among possible triangles create ones discribed by split method
2400 const int* nInd = volTool.GetFaceNodesIndices( iF );
2401 int nbVariants = ( nbNodes == 4 ? 2 : nbNodes );
2402 int iCom = 0; // common node of triangle faces to split into
2403 list< TTriangleFacet > facets;
2404 for ( int iVar = 0; iVar < nbVariants; ++iVar, ++iCom )
2406 TTriangleFacet t012( nInd[ iQ * ( iCom )],
2407 nInd[ iQ * ( (iCom+1)%nbNodes )],
2408 nInd[ iQ * ( (iCom+2)%nbNodes )]);
2409 TTriangleFacet t023( nInd[ iQ * ( iCom )],
2410 nInd[ iQ * ( (iCom+2)%nbNodes )],
2411 nInd[ iQ * ( (iCom+3)%nbNodes )]);
2412 if ( splitMethod.hasFacet( t012 ) && splitMethod.hasFacet( t023 ))
2414 facets.push_back( t012 );
2415 facets.push_back( t023 );
2416 for ( int iLast = iCom+4; iLast < iCom+nbNodes; ++iLast )
2417 facets.push_back( TTriangleFacet( nInd[ iQ * ( iCom )],
2418 nInd[ iQ * ((iLast-1)%nbNodes )],
2419 nInd[ iQ * ((iLast )%nbNodes )]));
2423 list< TTriangleFacet >::iterator facet = facets.begin();
2424 if ( facet == facets.end() )
2426 for ( ; facet != facets.end(); ++facet )
2428 if ( !volTool.IsFaceExternal( iF ))
2429 swap( facet->_n2, facet->_n3 );
2430 triangles.push_back( helper.AddFace( volNodes[ facet->_n1 ],
2431 volNodes[ facet->_n2 ],
2432 volNodes[ facet->_n3 ]));
2435 for ( int i = 0; i < triangles.size(); ++i )
2437 if ( !triangles[i] ) continue;
2439 fSubMesh->AddElement( triangles[i]);
2440 newElems.Append( triangles[i] );
2442 ReplaceElemInGroups( face, triangles, GetMeshDS() );
2443 GetMeshDS()->RemoveFreeElement( face, fSubMesh, /*fromGroups=*/false );
2445 } // while a face based on facet nodes exists
2446 } // loop on volume faces to split them into triangles
2448 GetMeshDS()->RemoveFreeElement( elem, subMesh, /*fromGroups=*/false );
2450 if ( geomType == SMDSEntity_TriQuad_Hexa )
2452 // remove medium nodes that could become free
2453 for ( int i = 20; i < volTool.NbNodes(); ++i )
2454 if ( volNodes[i]->NbInverseElements() == 0 )
2455 GetMeshDS()->RemoveNode( volNodes[i] );
2457 } // loop on volumes to split
2459 myLastCreatedNodes = newNodes;
2460 myLastCreatedElems = newElems;
2463 //=======================================================================
2464 //function : GetHexaFacetsToSplit
2465 //purpose : For hexahedra that will be split into prisms, finds facets to
2466 // split into triangles. Only hexahedra adjacent to the one closest
2467 // to theFacetNormal.Location() are returned.
2468 //param [in,out] theHexas - the hexahedra
2469 //param [in] theFacetNormal - facet normal
2470 //param [out] theFacets - the hexahedra and found facet IDs
2471 //=======================================================================
2473 void SMESH_MeshEditor::GetHexaFacetsToSplit( TIDSortedElemSet& theHexas,
2474 const gp_Ax1& theFacetNormal,
2475 TFacetOfElem & theFacets)
2477 #define THIS_METHOD "SMESH_MeshEditor::GetHexaFacetsToSplit(): "
2479 // Find a hexa closest to the location of theFacetNormal
2481 const SMDS_MeshElement* startHex;
2483 // get SMDS_ElemIteratorPtr on theHexas
2484 typedef const SMDS_MeshElement* TValue;
2485 typedef TIDSortedElemSet::iterator TSetIterator;
2486 typedef SMDS::SimpleAccessor<TValue,TSetIterator> TAccesor;
2487 typedef SMDS_MeshElement::GeomFilter TFilter;
2488 typedef SMDS_SetIterator < TValue, TSetIterator, TAccesor, TFilter > TElemSetIter;
2489 SMDS_ElemIteratorPtr elemIt = SMDS_ElemIteratorPtr
2490 ( new TElemSetIter( theHexas.begin(),
2492 SMDS_MeshElement::GeomFilter( SMDSGeom_HEXA )));
2494 SMESH_ElementSearcher* searcher =
2495 SMESH_MeshAlgos::GetElementSearcher( *myMesh->GetMeshDS(), elemIt );
2497 startHex = searcher->FindClosestTo( theFacetNormal.Location(), SMDSAbs_Volume );
2502 throw SALOME_Exception( THIS_METHOD "startHex not found");
2505 // Select a facet of startHex by theFacetNormal
2507 SMDS_VolumeTool vTool( startHex );
2508 double norm[3], dot, maxDot = 0;
2510 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2511 if ( vTool.GetFaceNormal( iF, norm[0], norm[1], norm[2] ))
2513 dot = Abs( theFacetNormal.Direction().Dot( gp_Dir( norm[0], norm[1], norm[2] )));
2521 throw SALOME_Exception( THIS_METHOD "facet of startHex not found");
2523 // Fill theFacets starting from facetID of startHex
2525 // facets used for seach of volumes adjacent to already treated ones
2526 typedef pair< TFacetOfElem::iterator, int > TElemFacets;
2527 typedef map< TVolumeFaceKey, TElemFacets > TFacetMap;
2528 TFacetMap facetsToCheck;
2530 set<const SMDS_MeshNode*> facetNodes;
2531 const SMDS_MeshElement* curHex;
2533 const bool allHex = ( theHexas.size() == myMesh->NbHexas() );
2537 // move in two directions from startHex via facetID
2538 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2541 int curFacet = facetID;
2542 if ( is2nd ) // do not treat startHex twice
2544 vTool.Set( curHex );
2545 if ( vTool.IsFreeFace( curFacet, &curHex ))
2551 vTool.GetFaceNodes( curFacet, facetNodes );
2552 vTool.Set( curHex );
2553 curFacet = vTool.GetFaceIndex( facetNodes );
2558 // store a facet to split
2559 if ( curHex->GetGeomType() != SMDSGeom_HEXA )
2561 theFacets.insert( make_pair( curHex, -1 ));
2564 if ( !allHex && !theHexas.count( curHex ))
2567 pair< TFacetOfElem::iterator, bool > facetIt2isNew =
2568 theFacets.insert( make_pair( curHex, curFacet ));
2569 if ( !facetIt2isNew.second )
2572 // remember not-to-split facets in facetsToCheck
2573 int oppFacet = vTool.GetOppFaceIndexOfHex( curFacet );
2574 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2576 if ( iF == curFacet && iF == oppFacet )
2578 TVolumeFaceKey facetKey ( vTool, iF );
2579 TElemFacets elemFacet( facetIt2isNew.first, iF );
2580 pair< TFacetMap::iterator, bool > it2isnew =
2581 facetsToCheck.insert( make_pair( facetKey, elemFacet ));
2582 if ( !it2isnew.second )
2583 facetsToCheck.erase( it2isnew.first ); // adjacent hex already checked
2585 // pass to a volume adjacent via oppFacet
2586 if ( vTool.IsFreeFace( oppFacet, &curHex ))
2592 // get a new curFacet
2593 vTool.GetFaceNodes( oppFacet, facetNodes );
2594 vTool.Set( curHex );
2595 curFacet = vTool.GetFaceIndex( facetNodes, /*hint=*/curFacet );
2598 } // move in two directions from startHex via facetID
2600 // Find a new startHex by facetsToCheck
2604 TFacetMap::iterator fIt = facetsToCheck.begin();
2605 while ( !startHex && fIt != facetsToCheck.end() )
2607 const TElemFacets& elemFacets = fIt->second;
2608 const SMDS_MeshElement* hex = elemFacets.first->first;
2609 int splitFacet = elemFacets.first->second;
2610 int lateralFacet = elemFacets.second;
2611 facetsToCheck.erase( fIt );
2612 fIt = facetsToCheck.begin();
2615 if ( vTool.IsFreeFace( lateralFacet, &curHex ) ||
2616 curHex->GetGeomType() != SMDSGeom_HEXA )
2618 if ( !allHex && !theHexas.count( curHex ))
2623 // find a facet of startHex to split
2625 set<const SMDS_MeshNode*> lateralNodes;
2626 vTool.GetFaceNodes( lateralFacet, lateralNodes );
2627 vTool.GetFaceNodes( splitFacet, facetNodes );
2628 int oppLateralFacet = vTool.GetOppFaceIndexOfHex( lateralFacet );
2629 vTool.Set( startHex );
2630 lateralFacet = vTool.GetFaceIndex( lateralNodes, oppLateralFacet );
2632 // look for a facet of startHex having common nodes with facetNodes
2633 // but not lateralFacet
2634 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2636 if ( iF == lateralFacet )
2638 int nbCommonNodes = 0;
2639 const SMDS_MeshNode** nn = vTool.GetFaceNodes( iF );
2640 for ( int iN = 0, nbN = vTool.NbFaceNodes( iF ); iN < nbN; ++iN )
2641 nbCommonNodes += facetNodes.count( nn[ iN ]);
2643 if ( nbCommonNodes >= 2 )
2650 throw SALOME_Exception( THIS_METHOD "facet of a new startHex not found");
2652 } // while ( startHex )
2659 //================================================================================
2661 * \brief Selects nodes of several elements according to a given interlace
2662 * \param [in] srcNodes - nodes to select from
2663 * \param [out] tgtNodesVec - array of nodes of several elements to fill in
2664 * \param [in] interlace - indices of nodes for all elements
2665 * \param [in] nbElems - nb of elements
2666 * \param [in] nbNodes - nb of nodes in each element
2667 * \param [in] mesh - the mesh
2668 * \param [out] elemQueue - a list to push elements found by the selected nodes
2669 * \param [in] type - type of elements to look for
2671 //================================================================================
2673 void selectNodes( const vector< const SMDS_MeshNode* >& srcNodes,
2674 vector< const SMDS_MeshNode* >* tgtNodesVec,
2675 const int* interlace,
2678 SMESHDS_Mesh* mesh = 0,
2679 list< const SMDS_MeshElement* >* elemQueue=0,
2680 SMDSAbs_ElementType type=SMDSAbs_All)
2682 for ( int iE = 0; iE < nbElems; ++iE )
2684 vector< const SMDS_MeshNode* >& elemNodes = tgtNodesVec[iE];
2685 const int* select = & interlace[iE*nbNodes];
2686 elemNodes.resize( nbNodes );
2687 for ( int iN = 0; iN < nbNodes; ++iN )
2688 elemNodes[iN] = srcNodes[ select[ iN ]];
2690 const SMDS_MeshElement* e;
2692 for ( int iE = 0; iE < nbElems; ++iE )
2693 if (( e = mesh->FindElement( tgtNodesVec[iE], type, /*noMedium=*/false)))
2694 elemQueue->push_back( e );
2698 //=======================================================================
2700 * Split bi-quadratic elements into linear ones without creation of additional nodes
2701 * - bi-quadratic triangle will be split into 3 linear quadrangles;
2702 * - bi-quadratic quadrangle will be split into 4 linear quadrangles;
2703 * - tri-quadratic hexahedron will be split into 8 linear hexahedra;
2704 * Quadratic elements of lower dimension adjacent to the split bi-quadratic element
2705 * will be split in order to keep the mesh conformal.
2706 * \param elems - elements to split
2708 //=======================================================================
2710 void SMESH_MeshEditor::SplitBiQuadraticIntoLinear(TIDSortedElemSet& theElems)
2712 vector< const SMDS_MeshNode* > elemNodes(27), subNodes[12], splitNodes[8];
2713 vector<const SMDS_MeshElement* > splitElems;
2714 list< const SMDS_MeshElement* > elemQueue;
2715 list< const SMDS_MeshElement* >::iterator elemIt;
2717 SMESHDS_Mesh * mesh = GetMeshDS();
2718 ElemFeatures *elemType, hexaType(SMDSAbs_Volume), quadType(SMDSAbs_Face), segType(SMDSAbs_Edge);
2719 int nbElems, nbNodes;
2721 TIDSortedElemSet::iterator elemSetIt = theElems.begin();
2722 for ( ; elemSetIt != theElems.end(); ++elemSetIt )
2725 elemQueue.push_back( *elemSetIt );
2726 for ( elemIt = elemQueue.begin(); elemIt != elemQueue.end(); ++elemIt )
2728 const SMDS_MeshElement* elem = *elemIt;
2729 switch( elem->GetEntityType() )
2731 case SMDSEntity_TriQuad_Hexa: // HEX27
2733 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2734 nbElems = nbNodes = 8;
2735 elemType = & hexaType;
2737 // get nodes for new elements
2738 static int vInd[8][8] = {{ 0,8,20,11, 16,21,26,24 },
2739 { 1,9,20,8, 17,22,26,21 },
2740 { 2,10,20,9, 18,23,26,22 },
2741 { 3,11,20,10, 19,24,26,23 },
2742 { 16,21,26,24, 4,12,25,15 },
2743 { 17,22,26,21, 5,13,25,12 },
2744 { 18,23,26,22, 6,14,25,13 },
2745 { 19,24,26,23, 7,15,25,14 }};
2746 selectNodes( elemNodes, & splitNodes[0], &vInd[0][0], nbElems, nbNodes );
2748 // add boundary faces to elemQueue
2749 static int fInd[6][9] = {{ 0,1,2,3, 8,9,10,11, 20 },
2750 { 4,5,6,7, 12,13,14,15, 25 },
2751 { 0,1,5,4, 8,17,12,16, 21 },
2752 { 1,2,6,5, 9,18,13,17, 22 },
2753 { 2,3,7,6, 10,19,14,18, 23 },
2754 { 3,0,4,7, 11,16,15,19, 24 }};
2755 selectNodes( elemNodes, & subNodes[0], &fInd[0][0], 6,9, mesh, &elemQueue, SMDSAbs_Face );
2757 // add boundary segments to elemQueue
2758 static int eInd[12][3] = {{ 0,1,8 }, { 1,2,9 }, { 2,3,10 }, { 3,0,11 },
2759 { 4,5,12}, { 5,6,13}, { 6,7,14 }, { 7,4,15 },
2760 { 0,4,16}, { 1,5,17}, { 2,6,18 }, { 3,7,19 }};
2761 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 12,3, mesh, &elemQueue, SMDSAbs_Edge );
2764 case SMDSEntity_BiQuad_Triangle: // TRIA7
2766 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2769 elemType = & quadType;
2771 // get nodes for new elements
2772 static int fInd[3][4] = {{ 0,3,6,5 }, { 1,4,6,3 }, { 2,5,6,4 }};
2773 selectNodes( elemNodes, & splitNodes[0], &fInd[0][0], nbElems, nbNodes );
2775 // add boundary segments to elemQueue
2776 static int eInd[3][3] = {{ 0,1,3 }, { 1,2,4 }, { 2,0,5 }};
2777 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 3,3, mesh, &elemQueue, SMDSAbs_Edge );
2780 case SMDSEntity_BiQuad_Quadrangle: // QUAD9
2782 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2785 elemType = & quadType;
2787 // get nodes for new elements
2788 static int fInd[4][4] = {{ 0,4,8,7 }, { 1,5,8,4 }, { 2,6,8,5 }, { 3,7,8,6 }};
2789 selectNodes( elemNodes, & splitNodes[0], &fInd[0][0], nbElems, nbNodes );
2791 // add boundary segments to elemQueue
2792 static int eInd[4][3] = {{ 0,1,4 }, { 1,2,5 }, { 2,3,6 }, { 3,0,7 }};
2793 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 4,3, mesh, &elemQueue, SMDSAbs_Edge );
2796 case SMDSEntity_Quad_Edge:
2798 if ( elemIt == elemQueue.begin() )
2799 continue; // an elem is in theElems
2800 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2803 elemType = & segType;
2805 // get nodes for new elements
2806 static int eInd[2][2] = {{ 0,2 }, { 2,1 }};
2807 selectNodes( elemNodes, & splitNodes[0], &eInd[0][0], nbElems, nbNodes );
2811 } // switch( elem->GetEntityType() )
2813 // Create new elements
2815 SMESHDS_SubMesh* subMesh = mesh->MeshElements( elem->getshapeId() );
2819 //elemType->SetID( elem->GetID() ); // create an elem with the same ID as a removed one
2820 mesh->RemoveFreeElement( elem, subMesh, /*fromGroups=*/false );
2821 //splitElems.push_back( AddElement( splitNodes[ 0 ], *elemType ));
2822 //elemType->SetID( -1 );
2824 for ( int iE = 0; iE < nbElems; ++iE )
2825 splitElems.push_back( AddElement( splitNodes[ iE ], *elemType ));
2828 ReplaceElemInGroups( elem, splitElems, mesh );
2831 for ( size_t i = 0; i < splitElems.size(); ++i )
2832 subMesh->AddElement( splitElems[i] );
2837 //=======================================================================
2838 //function : AddToSameGroups
2839 //purpose : add elemToAdd to the groups the elemInGroups belongs to
2840 //=======================================================================
2842 void SMESH_MeshEditor::AddToSameGroups (const SMDS_MeshElement* elemToAdd,
2843 const SMDS_MeshElement* elemInGroups,
2844 SMESHDS_Mesh * aMesh)
2846 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2847 if (!groups.empty()) {
2848 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2849 for ( ; grIt != groups.end(); grIt++ ) {
2850 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2851 if ( group && group->Contains( elemInGroups ))
2852 group->SMDSGroup().Add( elemToAdd );
2858 //=======================================================================
2859 //function : RemoveElemFromGroups
2860 //purpose : Remove removeelem to the groups the elemInGroups belongs to
2861 //=======================================================================
2862 void SMESH_MeshEditor::RemoveElemFromGroups (const SMDS_MeshElement* removeelem,
2863 SMESHDS_Mesh * aMesh)
2865 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2866 if (!groups.empty())
2868 set<SMESHDS_GroupBase*>::const_iterator GrIt = groups.begin();
2869 for (; GrIt != groups.end(); GrIt++)
2871 SMESHDS_Group* grp = dynamic_cast<SMESHDS_Group*>(*GrIt);
2872 if (!grp || grp->IsEmpty()) continue;
2873 grp->SMDSGroup().Remove(removeelem);
2878 //================================================================================
2880 * \brief Replace elemToRm by elemToAdd in the all groups
2882 //================================================================================
2884 void SMESH_MeshEditor::ReplaceElemInGroups (const SMDS_MeshElement* elemToRm,
2885 const SMDS_MeshElement* elemToAdd,
2886 SMESHDS_Mesh * aMesh)
2888 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2889 if (!groups.empty()) {
2890 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2891 for ( ; grIt != groups.end(); grIt++ ) {
2892 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2893 if ( group && group->SMDSGroup().Remove( elemToRm ) && elemToAdd )
2894 group->SMDSGroup().Add( elemToAdd );
2899 //================================================================================
2901 * \brief Replace elemToRm by elemToAdd in the all groups
2903 //================================================================================
2905 void SMESH_MeshEditor::ReplaceElemInGroups (const SMDS_MeshElement* elemToRm,
2906 const vector<const SMDS_MeshElement*>& elemToAdd,
2907 SMESHDS_Mesh * aMesh)
2909 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2910 if (!groups.empty())
2912 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2913 for ( ; grIt != groups.end(); grIt++ ) {
2914 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2915 if ( group && group->SMDSGroup().Remove( elemToRm ) )
2916 for ( int i = 0; i < elemToAdd.size(); ++i )
2917 group->SMDSGroup().Add( elemToAdd[ i ] );
2922 //=======================================================================
2923 //function : QuadToTri
2924 //purpose : Cut quadrangles into triangles.
2925 // theCrit is used to select a diagonal to cut
2926 //=======================================================================
2928 bool SMESH_MeshEditor::QuadToTri (TIDSortedElemSet & theElems,
2929 const bool the13Diag)
2931 myLastCreatedElems.Clear();
2932 myLastCreatedNodes.Clear();
2934 MESSAGE( "::QuadToTri()" );
2936 SMESHDS_Mesh * aMesh = GetMeshDS();
2938 Handle(Geom_Surface) surface;
2939 SMESH_MesherHelper helper( *GetMesh() );
2941 TIDSortedElemSet::iterator itElem;
2942 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
2943 const SMDS_MeshElement* elem = *itElem;
2944 if ( !elem || elem->GetType() != SMDSAbs_Face )
2946 bool isquad = elem->NbNodes()==4 || elem->NbNodes()==8;
2947 if(!isquad) continue;
2949 if(elem->NbNodes()==4) {
2950 // retrieve element nodes
2951 const SMDS_MeshNode* aNodes [4];
2952 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
2954 while ( itN->more() )
2955 aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
2957 int aShapeId = FindShape( elem );
2958 const SMDS_MeshElement* newElem1 = 0;
2959 const SMDS_MeshElement* newElem2 = 0;
2961 newElem1 = aMesh->AddFace( aNodes[2], aNodes[0], aNodes[1] );
2962 newElem2 = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
2965 newElem1 = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
2966 newElem2 = aMesh->AddFace( aNodes[3], aNodes[1], aNodes[2] );
2968 myLastCreatedElems.Append(newElem1);
2969 myLastCreatedElems.Append(newElem2);
2970 // put a new triangle on the same shape and add to the same groups
2973 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
2974 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
2976 AddToSameGroups( newElem1, elem, aMesh );
2977 AddToSameGroups( newElem2, elem, aMesh );
2978 aMesh->RemoveElement( elem );
2981 // Quadratic quadrangle
2983 if( elem->NbNodes()==8 && elem->IsQuadratic() ) {
2985 // get surface elem is on
2986 int aShapeId = FindShape( elem );
2987 if ( aShapeId != helper.GetSubShapeID() ) {
2991 shape = aMesh->IndexToShape( aShapeId );
2992 if ( !shape.IsNull() && shape.ShapeType() == TopAbs_FACE ) {
2993 TopoDS_Face face = TopoDS::Face( shape );
2994 surface = BRep_Tool::Surface( face );
2995 if ( !surface.IsNull() )
2996 helper.SetSubShape( shape );
3000 const SMDS_MeshNode* aNodes [8];
3001 const SMDS_MeshNode* inFaceNode = 0;
3002 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
3004 while ( itN->more() ) {
3005 aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
3006 if ( !inFaceNode && helper.GetNodeUVneedInFaceNode() &&
3007 aNodes[ i-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
3009 inFaceNode = aNodes[ i-1 ];
3013 // find middle point for (0,1,2,3)
3014 // and create a node in this point;
3016 if ( surface.IsNull() ) {
3018 p += gp_XYZ(aNodes[i]->X(), aNodes[i]->Y(), aNodes[i]->Z() );
3022 TopoDS_Face geomFace = TopoDS::Face( helper.GetSubShape() );
3025 uv += helper.GetNodeUV( geomFace, aNodes[i], inFaceNode );
3027 p = surface->Value( uv.X(), uv.Y() ).XYZ();
3029 const SMDS_MeshNode* newN = aMesh->AddNode( p.X(), p.Y(), p.Z() );
3030 myLastCreatedNodes.Append(newN);
3032 // create a new element
3033 const SMDS_MeshElement* newElem1 = 0;
3034 const SMDS_MeshElement* newElem2 = 0;
3036 newElem1 = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
3037 aNodes[6], aNodes[7], newN );
3038 newElem2 = aMesh->AddFace(aNodes[2], aNodes[0], aNodes[1],
3039 newN, aNodes[4], aNodes[5] );
3042 newElem1 = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
3043 aNodes[7], aNodes[4], newN );
3044 newElem2 = aMesh->AddFace(aNodes[3], aNodes[1], aNodes[2],
3045 newN, aNodes[5], aNodes[6] );
3047 myLastCreatedElems.Append(newElem1);
3048 myLastCreatedElems.Append(newElem2);
3049 // put a new triangle on the same shape and add to the same groups
3052 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
3053 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
3055 AddToSameGroups( newElem1, elem, aMesh );
3056 AddToSameGroups( newElem2, elem, aMesh );
3057 aMesh->RemoveElement( elem );
3064 //=======================================================================
3065 //function : getAngle
3067 //=======================================================================
3069 double getAngle(const SMDS_MeshElement * tr1,
3070 const SMDS_MeshElement * tr2,
3071 const SMDS_MeshNode * n1,
3072 const SMDS_MeshNode * n2)
3074 double angle = 2. * M_PI; // bad angle
3077 SMESH::Controls::TSequenceOfXYZ P1, P2;
3078 if ( !SMESH::Controls::NumericalFunctor::GetPoints( tr1, P1 ) ||
3079 !SMESH::Controls::NumericalFunctor::GetPoints( tr2, P2 ))
3082 if(!tr1->IsQuadratic())
3083 N1 = gp_Vec( P1(2) - P1(1) ) ^ gp_Vec( P1(3) - P1(1) );
3085 N1 = gp_Vec( P1(3) - P1(1) ) ^ gp_Vec( P1(5) - P1(1) );
3086 if ( N1.SquareMagnitude() <= gp::Resolution() )
3088 if(!tr2->IsQuadratic())
3089 N2 = gp_Vec( P2(2) - P2(1) ) ^ gp_Vec( P2(3) - P2(1) );
3091 N2 = gp_Vec( P2(3) - P2(1) ) ^ gp_Vec( P2(5) - P2(1) );
3092 if ( N2.SquareMagnitude() <= gp::Resolution() )
3095 // find the first diagonal node n1 in the triangles:
3096 // take in account a diagonal link orientation
3097 const SMDS_MeshElement *nFirst[2], *tr[] = { tr1, tr2 };
3098 for ( int t = 0; t < 2; t++ ) {
3099 SMDS_ElemIteratorPtr it = tr[ t ]->nodesIterator();
3100 int i = 0, iDiag = -1;
3101 while ( it->more()) {
3102 const SMDS_MeshElement *n = it->next();
3103 if ( n == n1 || n == n2 ) {
3107 if ( i - iDiag == 1 )
3108 nFirst[ t ] = ( n == n1 ? n2 : n1 );
3117 if ( nFirst[ 0 ] == nFirst[ 1 ] )
3120 angle = N1.Angle( N2 );
3125 // =================================================
3126 // class generating a unique ID for a pair of nodes
3127 // and able to return nodes by that ID
3128 // =================================================
3132 LinkID_Gen( const SMESHDS_Mesh* theMesh )
3133 :myMesh( theMesh ), myMaxID( theMesh->MaxNodeID() + 1)
3136 long GetLinkID (const SMDS_MeshNode * n1,
3137 const SMDS_MeshNode * n2) const
3139 return ( Min(n1->GetID(),n2->GetID()) * myMaxID + Max(n1->GetID(),n2->GetID()));
3142 bool GetNodes (const long theLinkID,
3143 const SMDS_MeshNode* & theNode1,
3144 const SMDS_MeshNode* & theNode2) const
3146 theNode1 = myMesh->FindNode( theLinkID / myMaxID );
3147 if ( !theNode1 ) return false;
3148 theNode2 = myMesh->FindNode( theLinkID % myMaxID );
3149 if ( !theNode2 ) return false;
3155 const SMESHDS_Mesh* myMesh;
3160 //=======================================================================
3161 //function : TriToQuad
3162 //purpose : Fuse neighbour triangles into quadrangles.
3163 // theCrit is used to select a neighbour to fuse with.
3164 // theMaxAngle is a max angle between element normals at which
3165 // fusion is still performed.
3166 //=======================================================================
3168 bool SMESH_MeshEditor::TriToQuad (TIDSortedElemSet & theElems,
3169 SMESH::Controls::NumericalFunctorPtr theCrit,
3170 const double theMaxAngle)
3172 myLastCreatedElems.Clear();
3173 myLastCreatedNodes.Clear();
3175 MESSAGE( "::TriToQuad()" );
3177 if ( !theCrit.get() )
3180 SMESHDS_Mesh * aMesh = GetMeshDS();
3182 // Prepare data for algo: build
3183 // 1. map of elements with their linkIDs
3184 // 2. map of linkIDs with their elements
3186 map< SMESH_TLink, list< const SMDS_MeshElement* > > mapLi_listEl;
3187 map< SMESH_TLink, list< const SMDS_MeshElement* > >::iterator itLE;
3188 map< const SMDS_MeshElement*, set< SMESH_TLink > > mapEl_setLi;
3189 map< const SMDS_MeshElement*, set< SMESH_TLink > >::iterator itEL;
3191 TIDSortedElemSet::iterator itElem;
3192 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
3194 const SMDS_MeshElement* elem = *itElem;
3195 if(!elem || elem->GetType() != SMDSAbs_Face ) continue;
3196 bool IsTria = ( elem->NbCornerNodes()==3 );
3197 if (!IsTria) continue;
3199 // retrieve element nodes
3200 const SMDS_MeshNode* aNodes [4];
3201 SMDS_NodeIteratorPtr itN = elem->nodeIterator();
3204 aNodes[ i++ ] = itN->next();
3205 aNodes[ 3 ] = aNodes[ 0 ];
3208 for ( i = 0; i < 3; i++ ) {
3209 SMESH_TLink link( aNodes[i], aNodes[i+1] );
3210 // check if elements sharing a link can be fused
3211 itLE = mapLi_listEl.find( link );
3212 if ( itLE != mapLi_listEl.end() ) {
3213 if ((*itLE).second.size() > 1 ) // consider only 2 elems adjacent by a link
3215 const SMDS_MeshElement* elem2 = (*itLE).second.front();
3216 //if ( FindShape( elem ) != FindShape( elem2 ))
3217 // continue; // do not fuse triangles laying on different shapes
3218 if ( getAngle( elem, elem2, aNodes[i], aNodes[i+1] ) > theMaxAngle )
3219 continue; // avoid making badly shaped quads
3220 (*itLE).second.push_back( elem );
3223 mapLi_listEl[ link ].push_back( elem );
3225 mapEl_setLi [ elem ].insert( link );
3228 // Clean the maps from the links shared by a sole element, ie
3229 // links to which only one element is bound in mapLi_listEl
3231 for ( itLE = mapLi_listEl.begin(); itLE != mapLi_listEl.end(); itLE++ ) {
3232 int nbElems = (*itLE).second.size();
3233 if ( nbElems < 2 ) {
3234 const SMDS_MeshElement* elem = (*itLE).second.front();
3235 SMESH_TLink link = (*itLE).first;
3236 mapEl_setLi[ elem ].erase( link );
3237 if ( mapEl_setLi[ elem ].empty() )
3238 mapEl_setLi.erase( elem );
3242 // Algo: fuse triangles into quadrangles
3244 while ( ! mapEl_setLi.empty() ) {
3245 // Look for the start element:
3246 // the element having the least nb of shared links
3247 const SMDS_MeshElement* startElem = 0;
3249 for ( itEL = mapEl_setLi.begin(); itEL != mapEl_setLi.end(); itEL++ ) {
3250 int nbLinks = (*itEL).second.size();
3251 if ( nbLinks < minNbLinks ) {
3252 startElem = (*itEL).first;
3253 minNbLinks = nbLinks;
3254 if ( minNbLinks == 1 )
3259 // search elements to fuse starting from startElem or links of elements
3260 // fused earlyer - startLinks
3261 list< SMESH_TLink > startLinks;
3262 while ( startElem || !startLinks.empty() ) {
3263 while ( !startElem && !startLinks.empty() ) {
3264 // Get an element to start, by a link
3265 SMESH_TLink linkId = startLinks.front();
3266 startLinks.pop_front();
3267 itLE = mapLi_listEl.find( linkId );
3268 if ( itLE != mapLi_listEl.end() ) {
3269 list< const SMDS_MeshElement* > & listElem = (*itLE).second;
3270 list< const SMDS_MeshElement* >::iterator itE = listElem.begin();
3271 for ( ; itE != listElem.end() ; itE++ )
3272 if ( mapEl_setLi.find( (*itE) ) != mapEl_setLi.end() )
3274 mapLi_listEl.erase( itLE );
3279 // Get candidates to be fused
3280 const SMDS_MeshElement *tr1 = startElem, *tr2 = 0, *tr3 = 0;
3281 const SMESH_TLink *link12, *link13;
3283 ASSERT( mapEl_setLi.find( tr1 ) != mapEl_setLi.end() );
3284 set< SMESH_TLink >& setLi = mapEl_setLi[ tr1 ];
3285 ASSERT( !setLi.empty() );
3286 set< SMESH_TLink >::iterator itLi;
3287 for ( itLi = setLi.begin(); itLi != setLi.end(); itLi++ )
3289 const SMESH_TLink & link = (*itLi);
3290 itLE = mapLi_listEl.find( link );
3291 if ( itLE == mapLi_listEl.end() )
3294 const SMDS_MeshElement* elem = (*itLE).second.front();
3296 elem = (*itLE).second.back();
3297 mapLi_listEl.erase( itLE );
3298 if ( mapEl_setLi.find( elem ) == mapEl_setLi.end())
3309 // add other links of elem to list of links to re-start from
3310 set< SMESH_TLink >& links = mapEl_setLi[ elem ];
3311 set< SMESH_TLink >::iterator it;
3312 for ( it = links.begin(); it != links.end(); it++ ) {
3313 const SMESH_TLink& link2 = (*it);
3314 if ( link2 != link )
3315 startLinks.push_back( link2 );
3319 // Get nodes of possible quadrangles
3320 const SMDS_MeshNode *n12 [4], *n13 [4];
3321 bool Ok12 = false, Ok13 = false;
3322 const SMDS_MeshNode *linkNode1, *linkNode2;
3324 linkNode1 = link12->first;
3325 linkNode2 = link12->second;
3326 if ( tr2 && getQuadrangleNodes( n12, linkNode1, linkNode2, tr1, tr2 ))
3330 linkNode1 = link13->first;
3331 linkNode2 = link13->second;
3332 if ( tr3 && getQuadrangleNodes( n13, linkNode1, linkNode2, tr1, tr3 ))
3336 // Choose a pair to fuse
3337 if ( Ok12 && Ok13 ) {
3338 SMDS_FaceOfNodes quad12 ( n12[ 0 ], n12[ 1 ], n12[ 2 ], n12[ 3 ] );
3339 SMDS_FaceOfNodes quad13 ( n13[ 0 ], n13[ 1 ], n13[ 2 ], n13[ 3 ] );
3340 double aBadRate12 = getBadRate( &quad12, theCrit );
3341 double aBadRate13 = getBadRate( &quad13, theCrit );
3342 if ( aBadRate13 < aBadRate12 )
3349 // and remove fused elems and remove links from the maps
3350 mapEl_setLi.erase( tr1 );
3353 mapEl_setLi.erase( tr2 );
3354 mapLi_listEl.erase( *link12 );
3355 if ( tr1->NbNodes() == 3 )
3357 const SMDS_MeshElement* newElem = 0;
3358 newElem = aMesh->AddFace(n12[0], n12[1], n12[2], n12[3] );
3359 myLastCreatedElems.Append(newElem);
3360 AddToSameGroups( newElem, tr1, aMesh );
3361 int aShapeId = tr1->getshapeId();
3363 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3364 aMesh->RemoveElement( tr1 );
3365 aMesh->RemoveElement( tr2 );
3368 vector< const SMDS_MeshNode* > N1;
3369 vector< const SMDS_MeshNode* > N2;
3370 getNodesFromTwoTria(tr1,tr2,N1,N2);
3371 // now we receive following N1 and N2 (using numeration as in image in InverseDiag())
3372 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
3373 // i.e. first nodes from both arrays form a new diagonal
3374 const SMDS_MeshNode* aNodes[8];
3383 const SMDS_MeshElement* newElem = 0;
3384 if ( N1.size() == 7 || N2.size() == 7 ) // biquadratic
3385 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3386 aNodes[4], aNodes[5], aNodes[6], aNodes[7], N1[4]);
3388 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3389 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
3390 myLastCreatedElems.Append(newElem);
3391 AddToSameGroups( newElem, tr1, aMesh );
3392 int aShapeId = tr1->getshapeId();
3394 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3395 aMesh->RemoveElement( tr1 );
3396 aMesh->RemoveElement( tr2 );
3397 // remove middle node (9)
3398 if ( N1[4]->NbInverseElements() == 0 )
3399 aMesh->RemoveNode( N1[4] );
3400 if ( N1.size() == 7 && N1[6]->NbInverseElements() == 0 )
3401 aMesh->RemoveNode( N1[6] );
3402 if ( N2.size() == 7 && N2[6]->NbInverseElements() == 0 )
3403 aMesh->RemoveNode( N2[6] );
3408 mapEl_setLi.erase( tr3 );
3409 mapLi_listEl.erase( *link13 );
3410 if ( tr1->NbNodes() == 3 ) {
3411 const SMDS_MeshElement* newElem = 0;
3412 newElem = aMesh->AddFace(n13[0], n13[1], n13[2], n13[3] );
3413 myLastCreatedElems.Append(newElem);
3414 AddToSameGroups( newElem, tr1, aMesh );
3415 int aShapeId = tr1->getshapeId();
3417 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3418 aMesh->RemoveElement( tr1 );
3419 aMesh->RemoveElement( tr3 );
3422 vector< const SMDS_MeshNode* > N1;
3423 vector< const SMDS_MeshNode* > N2;
3424 getNodesFromTwoTria(tr1,tr3,N1,N2);
3425 // now we receive following N1 and N2 (using numeration as above image)
3426 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
3427 // i.e. first nodes from both arrays form a new diagonal
3428 const SMDS_MeshNode* aNodes[8];
3437 const SMDS_MeshElement* newElem = 0;
3438 if ( N1.size() == 7 || N2.size() == 7 ) // biquadratic
3439 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3440 aNodes[4], aNodes[5], aNodes[6], aNodes[7], N1[4]);
3442 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3443 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
3444 myLastCreatedElems.Append(newElem);
3445 AddToSameGroups( newElem, tr1, aMesh );
3446 int aShapeId = tr1->getshapeId();
3448 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3449 aMesh->RemoveElement( tr1 );
3450 aMesh->RemoveElement( tr3 );
3451 // remove middle node (9)
3452 if ( N1[4]->NbInverseElements() == 0 )
3453 aMesh->RemoveNode( N1[4] );
3454 if ( N1.size() == 7 && N1[6]->NbInverseElements() == 0 )
3455 aMesh->RemoveNode( N1[6] );
3456 if ( N2.size() == 7 && N2[6]->NbInverseElements() == 0 )
3457 aMesh->RemoveNode( N2[6] );
3461 // Next element to fuse: the rejected one
3463 startElem = Ok12 ? tr3 : tr2;
3465 } // if ( startElem )
3466 } // while ( startElem || !startLinks.empty() )
3467 } // while ( ! mapEl_setLi.empty() )
3473 /*#define DUMPSO(txt) \
3474 // cout << txt << endl;
3475 //=============================================================================
3479 //=============================================================================
3480 static void swap( int i1, int i2, int idNodes[], gp_Pnt P[] )
3484 int tmp = idNodes[ i1 ];
3485 idNodes[ i1 ] = idNodes[ i2 ];
3486 idNodes[ i2 ] = tmp;
3487 gp_Pnt Ptmp = P[ i1 ];
3490 DUMPSO( i1 << "(" << idNodes[ i2 ] << ") <-> " << i2 << "(" << idNodes[ i1 ] << ")");
3493 //=======================================================================
3494 //function : SortQuadNodes
3495 //purpose : Set 4 nodes of a quadrangle face in a good order.
3496 // Swap 1<->2 or 2<->3 nodes and correspondingly return
3498 //=======================================================================
3500 int SMESH_MeshEditor::SortQuadNodes (const SMDS_Mesh * theMesh,
3505 for ( i = 0; i < 4; i++ ) {
3506 const SMDS_MeshNode *n = theMesh->FindNode( idNodes[i] );
3508 P[ i ].SetCoord( n->X(), n->Y(), n->Z() );
3511 gp_Vec V1(P[0], P[1]);
3512 gp_Vec V2(P[0], P[2]);
3513 gp_Vec V3(P[0], P[3]);
3515 gp_Vec Cross1 = V1 ^ V2;
3516 gp_Vec Cross2 = V2 ^ V3;
3519 if (Cross1.Dot(Cross2) < 0)
3524 if (Cross1.Dot(Cross2) < 0)
3528 swap ( i, i + 1, idNodes, P );
3530 // for ( int ii = 0; ii < 4; ii++ ) {
3531 // const SMDS_MeshNode *n = theMesh->FindNode( idNodes[ii] );
3532 // DUMPSO( ii << "(" << idNodes[ii] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3538 //=======================================================================
3539 //function : SortHexaNodes
3540 //purpose : Set 8 nodes of a hexahedron in a good order.
3541 // Return success status
3542 //=======================================================================
3544 bool SMESH_MeshEditor::SortHexaNodes (const SMDS_Mesh * theMesh,
3549 DUMPSO( "INPUT: ========================================");
3550 for ( i = 0; i < 8; i++ ) {
3551 const SMDS_MeshNode *n = theMesh->FindNode( idNodes[i] );
3552 if ( !n ) return false;
3553 P[ i ].SetCoord( n->X(), n->Y(), n->Z() );
3554 DUMPSO( i << "(" << idNodes[i] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3556 DUMPSO( "========================================");
3559 set<int> faceNodes; // ids of bottom face nodes, to be found
3560 set<int> checkedId1; // ids of tried 2-nd nodes
3561 Standard_Real leastDist = DBL_MAX; // dist of the 4-th node from 123 plane
3562 const Standard_Real tol = 1.e-6; // tolerance to find nodes in plane
3563 int iMin, iLoop1 = 0;
3565 // Loop to try the 2-nd nodes
3567 while ( leastDist > DBL_MIN && ++iLoop1 < 8 )
3569 // Find not checked 2-nd node
3570 for ( i = 1; i < 8; i++ )
3571 if ( checkedId1.find( idNodes[i] ) == checkedId1.end() ) {
3572 int id1 = idNodes[i];
3573 swap ( 1, i, idNodes, P );
3574 checkedId1.insert ( id1 );
3578 // Find the 3-d node so that 1-2-3 triangle to be on a hexa face,
3579 // ie that all but meybe one (id3 which is on the same face) nodes
3580 // lay on the same side from the triangle plane.
3582 bool manyInPlane = false; // more than 4 nodes lay in plane
3584 while ( ++iLoop2 < 6 ) {
3586 // get 1-2-3 plane coeffs
3587 Standard_Real A, B, C, D;
3588 gp_Vec N = gp_Vec (P[0], P[1]).Crossed( gp_Vec (P[0], P[2]) );
3589 if ( N.SquareMagnitude() > gp::Resolution() )
3591 gp_Pln pln ( P[0], N );
3592 pln.Coefficients( A, B, C, D );
3594 // find the node (iMin) closest to pln
3595 Standard_Real dist[ 8 ], minDist = DBL_MAX;
3597 for ( i = 3; i < 8; i++ ) {
3598 dist[i] = A * P[i].X() + B * P[i].Y() + C * P[i].Z() + D;
3599 if ( fabs( dist[i] ) < minDist ) {
3600 minDist = fabs( dist[i] );
3603 if ( fabs( dist[i] ) <= tol )
3604 idInPln.insert( idNodes[i] );
3607 // there should not be more than 4 nodes in bottom plane
3608 if ( idInPln.size() > 1 )
3610 DUMPSO( "### idInPln.size() = " << idInPln.size());
3611 // idInPlane does not contain the first 3 nodes
3612 if ( manyInPlane || idInPln.size() == 5)
3613 return false; // all nodes in one plane
3616 // set the 1-st node to be not in plane
3617 for ( i = 3; i < 8; i++ ) {
3618 if ( idInPln.find( idNodes[ i ] ) == idInPln.end() ) {
3619 DUMPSO( "### Reset 0-th node");
3620 swap( 0, i, idNodes, P );
3625 // reset to re-check second nodes
3626 leastDist = DBL_MAX;
3630 break; // from iLoop2;
3633 // check that the other 4 nodes are on the same side
3634 bool sameSide = true;
3635 bool isNeg = dist[ iMin == 3 ? 4 : 3 ] <= 0.;
3636 for ( i = 3; sameSide && i < 8; i++ ) {
3638 sameSide = ( isNeg == dist[i] <= 0.);
3641 // keep best solution
3642 if ( sameSide && minDist < leastDist ) {
3643 leastDist = minDist;
3645 faceNodes.insert( idNodes[ 1 ] );
3646 faceNodes.insert( idNodes[ 2 ] );
3647 faceNodes.insert( idNodes[ iMin ] );
3648 DUMPSO( "loop " << iLoop2 << " id2 " << idNodes[ 1 ] << " id3 " << idNodes[ 2 ]
3649 << " leastDist = " << leastDist);
3650 if ( leastDist <= DBL_MIN )
3655 // set next 3-d node to check
3656 int iNext = 2 + iLoop2;
3658 DUMPSO( "Try 2-nd");
3659 swap ( 2, iNext, idNodes, P );
3661 } // while ( iLoop2 < 6 )
3664 if ( faceNodes.empty() ) return false;
3666 // Put the faceNodes in proper places
3667 for ( i = 4; i < 8; i++ ) {
3668 if ( faceNodes.find( idNodes[ i ] ) != faceNodes.end() ) {
3669 // find a place to put
3671 while ( faceNodes.find( idNodes[ iTo ] ) != faceNodes.end() )
3673 DUMPSO( "Set faceNodes");
3674 swap ( iTo, i, idNodes, P );
3679 // Set nodes of the found bottom face in good order
3680 DUMPSO( " Found bottom face: ");
3681 i = SortQuadNodes( theMesh, idNodes );
3683 gp_Pnt Ptmp = P[ i ];
3688 // for ( int ii = 0; ii < 4; ii++ ) {
3689 // const SMDS_MeshNode *n = theMesh->FindNode( idNodes[ii] );
3690 // DUMPSO( ii << "(" << idNodes[ii] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3693 // Gravity center of the top and bottom faces
3694 gp_Pnt aGCb = ( P[0].XYZ() + P[1].XYZ() + P[2].XYZ() + P[3].XYZ() ) / 4.;
3695 gp_Pnt aGCt = ( P[4].XYZ() + P[5].XYZ() + P[6].XYZ() + P[7].XYZ() ) / 4.;
3697 // Get direction from the bottom to the top face
3698 gp_Vec upDir ( aGCb, aGCt );
3699 Standard_Real upDirSize = upDir.Magnitude();
3700 if ( upDirSize <= gp::Resolution() ) return false;
3703 // Assure that the bottom face normal points up
3704 gp_Vec Nb = gp_Vec (P[0], P[1]).Crossed( gp_Vec (P[0], P[2]) );
3705 Nb += gp_Vec (P[0], P[2]).Crossed( gp_Vec (P[0], P[3]) );
3706 if ( Nb.Dot( upDir ) < 0 ) {
3707 DUMPSO( "Reverse bottom face");
3708 swap( 1, 3, idNodes, P );
3711 // Find 5-th node - the one closest to the 1-st among the last 4 nodes.
3712 Standard_Real minDist = DBL_MAX;
3713 for ( i = 4; i < 8; i++ ) {
3714 // projection of P[i] to the plane defined by P[0] and upDir
3715 gp_Pnt Pp = P[i].Translated( upDir * ( upDir.Dot( gp_Vec( P[i], P[0] ))));
3716 Standard_Real sqDist = P[0].SquareDistance( Pp );
3717 if ( sqDist < minDist ) {
3722 DUMPSO( "Set 4-th");
3723 swap ( 4, iMin, idNodes, P );
3725 // Set nodes of the top face in good order
3726 DUMPSO( "Sort top face");
3727 i = SortQuadNodes( theMesh, &idNodes[4] );
3730 gp_Pnt Ptmp = P[ i ];
3735 // Assure that direction of the top face normal is from the bottom face
3736 gp_Vec Nt = gp_Vec (P[4], P[5]).Crossed( gp_Vec (P[4], P[6]) );
3737 Nt += gp_Vec (P[4], P[6]).Crossed( gp_Vec (P[4], P[7]) );
3738 if ( Nt.Dot( upDir ) < 0 ) {
3739 DUMPSO( "Reverse top face");
3740 swap( 5, 7, idNodes, P );
3743 // DUMPSO( "OUTPUT: ========================================");
3744 // for ( i = 0; i < 8; i++ ) {
3745 // float *p = ugrid->GetPoint(idNodes[i]);
3746 // DUMPSO( i << "(" << idNodes[i] << ") : " << p[0] << " " << p[1] << " " << p[2]);
3752 //================================================================================
3754 * \brief Return nodes linked to the given one
3755 * \param theNode - the node
3756 * \param linkedNodes - the found nodes
3757 * \param type - the type of elements to check
3759 * Medium nodes are ignored
3761 //================================================================================
3763 void SMESH_MeshEditor::GetLinkedNodes( const SMDS_MeshNode* theNode,
3764 TIDSortedElemSet & linkedNodes,
3765 SMDSAbs_ElementType type )
3767 SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator(type);
3768 while ( elemIt->more() )
3770 const SMDS_MeshElement* elem = elemIt->next();
3771 if(elem->GetType() == SMDSAbs_0DElement)
3774 SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
3775 if ( elem->GetType() == SMDSAbs_Volume )
3777 SMDS_VolumeTool vol( elem );
3778 while ( nodeIt->more() ) {
3779 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
3780 if ( theNode != n && vol.IsLinked( theNode, n ))
3781 linkedNodes.insert( n );
3786 for ( int i = 0; nodeIt->more(); ++i ) {
3787 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
3788 if ( n == theNode ) {
3789 int iBefore = i - 1;
3791 if ( elem->IsQuadratic() ) {
3792 int nb = elem->NbNodes() / 2;
3793 iAfter = SMESH_MesherHelper::WrapIndex( iAfter, nb );
3794 iBefore = SMESH_MesherHelper::WrapIndex( iBefore, nb );
3796 linkedNodes.insert( elem->GetNodeWrap( iAfter ));
3797 linkedNodes.insert( elem->GetNodeWrap( iBefore ));
3804 //=======================================================================
3805 //function : laplacianSmooth
3806 //purpose : pulls theNode toward the center of surrounding nodes directly
3807 // connected to that node along an element edge
3808 //=======================================================================
3810 void laplacianSmooth(const SMDS_MeshNode* theNode,
3811 const Handle(Geom_Surface)& theSurface,
3812 map< const SMDS_MeshNode*, gp_XY* >& theUVMap)
3814 // find surrounding nodes
3816 TIDSortedElemSet nodeSet;
3817 SMESH_MeshEditor::GetLinkedNodes( theNode, nodeSet, SMDSAbs_Face );
3819 // compute new coodrs
3821 double coord[] = { 0., 0., 0. };
3822 TIDSortedElemSet::iterator nodeSetIt = nodeSet.begin();
3823 for ( ; nodeSetIt != nodeSet.end(); nodeSetIt++ ) {
3824 const SMDS_MeshNode* node = cast2Node(*nodeSetIt);
3825 if ( theSurface.IsNull() ) { // smooth in 3D
3826 coord[0] += node->X();
3827 coord[1] += node->Y();
3828 coord[2] += node->Z();
3830 else { // smooth in 2D
3831 ASSERT( theUVMap.find( node ) != theUVMap.end() );
3832 gp_XY* uv = theUVMap[ node ];
3833 coord[0] += uv->X();
3834 coord[1] += uv->Y();
3837 int nbNodes = nodeSet.size();
3840 coord[0] /= nbNodes;
3841 coord[1] /= nbNodes;
3843 if ( !theSurface.IsNull() ) {
3844 ASSERT( theUVMap.find( theNode ) != theUVMap.end() );
3845 theUVMap[ theNode ]->SetCoord( coord[0], coord[1] );
3846 gp_Pnt p3d = theSurface->Value( coord[0], coord[1] );
3852 coord[2] /= nbNodes;
3856 const_cast< SMDS_MeshNode* >( theNode )->setXYZ(coord[0],coord[1],coord[2]);
3859 //=======================================================================
3860 //function : centroidalSmooth
3861 //purpose : pulls theNode toward the element-area-weighted centroid of the
3862 // surrounding elements
3863 //=======================================================================
3865 void centroidalSmooth(const SMDS_MeshNode* theNode,
3866 const Handle(Geom_Surface)& theSurface,
3867 map< const SMDS_MeshNode*, gp_XY* >& theUVMap)
3869 gp_XYZ aNewXYZ(0.,0.,0.);
3870 SMESH::Controls::Area anAreaFunc;
3871 double totalArea = 0.;
3876 SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator(SMDSAbs_Face);
3877 while ( elemIt->more() )
3879 const SMDS_MeshElement* elem = elemIt->next();
3882 gp_XYZ elemCenter(0.,0.,0.);
3883 SMESH::Controls::TSequenceOfXYZ aNodePoints;
3884 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
3885 int nn = elem->NbNodes();
3886 if(elem->IsQuadratic()) nn = nn/2;
3888 //while ( itN->more() ) {
3890 const SMDS_MeshNode* aNode = static_cast<const SMDS_MeshNode*>( itN->next() );
3892 gp_XYZ aP( aNode->X(), aNode->Y(), aNode->Z() );
3893 aNodePoints.push_back( aP );
3894 if ( !theSurface.IsNull() ) { // smooth in 2D
3895 ASSERT( theUVMap.find( aNode ) != theUVMap.end() );
3896 gp_XY* uv = theUVMap[ aNode ];
3897 aP.SetCoord( uv->X(), uv->Y(), 0. );
3901 double elemArea = anAreaFunc.GetValue( aNodePoints );
3902 totalArea += elemArea;
3904 aNewXYZ += elemCenter * elemArea;
3906 aNewXYZ /= totalArea;
3907 if ( !theSurface.IsNull() ) {
3908 theUVMap[ theNode ]->SetCoord( aNewXYZ.X(), aNewXYZ.Y() );
3909 aNewXYZ = theSurface->Value( aNewXYZ.X(), aNewXYZ.Y() ).XYZ();
3914 const_cast< SMDS_MeshNode* >( theNode )->setXYZ(aNewXYZ.X(),aNewXYZ.Y(),aNewXYZ.Z());
3917 //=======================================================================
3918 //function : getClosestUV
3919 //purpose : return UV of closest projection
3920 //=======================================================================
3922 static bool getClosestUV (Extrema_GenExtPS& projector,
3923 const gp_Pnt& point,
3926 projector.Perform( point );
3927 if ( projector.IsDone() ) {
3928 double u, v, minVal = DBL_MAX;
3929 for ( int i = projector.NbExt(); i > 0; i-- )
3930 if ( projector.SquareDistance( i ) < minVal ) {
3931 minVal = projector.SquareDistance( i );
3932 projector.Point( i ).Parameter( u, v );
3934 result.SetCoord( u, v );
3940 //=======================================================================
3942 //purpose : Smooth theElements during theNbIterations or until a worst
3943 // element has aspect ratio <= theTgtAspectRatio.
3944 // Aspect Ratio varies in range [1.0, inf].
3945 // If theElements is empty, the whole mesh is smoothed.
3946 // theFixedNodes contains additionally fixed nodes. Nodes built
3947 // on edges and boundary nodes are always fixed.
3948 //=======================================================================
3950 void SMESH_MeshEditor::Smooth (TIDSortedElemSet & theElems,
3951 set<const SMDS_MeshNode*> & theFixedNodes,
3952 const SmoothMethod theSmoothMethod,
3953 const int theNbIterations,
3954 double theTgtAspectRatio,
3957 myLastCreatedElems.Clear();
3958 myLastCreatedNodes.Clear();
3960 MESSAGE((theSmoothMethod==LAPLACIAN ? "LAPLACIAN" : "CENTROIDAL") << "--::Smooth()");
3962 if ( theTgtAspectRatio < 1.0 )
3963 theTgtAspectRatio = 1.0;
3965 const double disttol = 1.e-16;
3967 SMESH::Controls::AspectRatio aQualityFunc;
3969 SMESHDS_Mesh* aMesh = GetMeshDS();
3971 if ( theElems.empty() ) {
3972 // add all faces to theElems
3973 SMDS_FaceIteratorPtr fIt = aMesh->facesIterator();
3974 while ( fIt->more() ) {
3975 const SMDS_MeshElement* face = fIt->next();
3976 theElems.insert( theElems.end(), face );
3979 // get all face ids theElems are on
3980 set< int > faceIdSet;
3981 TIDSortedElemSet::iterator itElem;
3983 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
3984 int fId = FindShape( *itElem );
3985 // check that corresponding submesh exists and a shape is face
3987 faceIdSet.find( fId ) == faceIdSet.end() &&
3988 aMesh->MeshElements( fId )) {
3989 TopoDS_Shape F = aMesh->IndexToShape( fId );
3990 if ( !F.IsNull() && F.ShapeType() == TopAbs_FACE )
3991 faceIdSet.insert( fId );
3994 faceIdSet.insert( 0 ); // to smooth elements that are not on any TopoDS_Face
3996 // ===============================================
3997 // smooth elements on each TopoDS_Face separately
3998 // ===============================================
4000 SMESH_MesherHelper helper( *GetMesh() );
4002 set< int >::reverse_iterator fId = faceIdSet.rbegin(); // treat 0 fId at the end
4003 for ( ; fId != faceIdSet.rend(); ++fId )
4005 // get face surface and submesh
4006 Handle(Geom_Surface) surface;
4007 SMESHDS_SubMesh* faceSubMesh = 0;
4009 double fToler2 = 0, f,l;
4010 double u1 = 0, u2 = 0, v1 = 0, v2 = 0;
4011 bool isUPeriodic = false, isVPeriodic = false;
4014 face = TopoDS::Face( aMesh->IndexToShape( *fId ));
4015 surface = BRep_Tool::Surface( face );
4016 faceSubMesh = aMesh->MeshElements( *fId );
4017 fToler2 = BRep_Tool::Tolerance( face );
4018 fToler2 *= fToler2 * 10.;
4019 isUPeriodic = surface->IsUPeriodic();
4022 isVPeriodic = surface->IsVPeriodic();
4025 surface->Bounds( u1, u2, v1, v2 );
4026 helper.SetSubShape( face );
4028 // ---------------------------------------------------------
4029 // for elements on a face, find movable and fixed nodes and
4030 // compute UV for them
4031 // ---------------------------------------------------------
4032 bool checkBoundaryNodes = false;
4033 bool isQuadratic = false;
4034 set<const SMDS_MeshNode*> setMovableNodes;
4035 map< const SMDS_MeshNode*, gp_XY* > uvMap, uvMap2;
4036 list< gp_XY > listUV; // uvs the 2 uvMaps refer to
4037 list< const SMDS_MeshElement* > elemsOnFace;
4039 Extrema_GenExtPS projector;
4040 GeomAdaptor_Surface surfAdaptor;
4041 if ( !surface.IsNull() ) {
4042 surfAdaptor.Load( surface );
4043 projector.Initialize( surfAdaptor, 20,20, 1e-5,1e-5 );
4045 int nbElemOnFace = 0;
4046 itElem = theElems.begin();
4047 // loop on not yet smoothed elements: look for elems on a face
4048 while ( itElem != theElems.end() )
4050 if ( faceSubMesh && nbElemOnFace == faceSubMesh->NbElements() )
4051 break; // all elements found
4053 const SMDS_MeshElement* elem = *itElem;
4054 if ( !elem || elem->GetType() != SMDSAbs_Face || elem->NbNodes() < 3 ||
4055 ( faceSubMesh && !faceSubMesh->Contains( elem ))) {
4059 elemsOnFace.push_back( elem );
4060 theElems.erase( itElem++ );
4064 isQuadratic = elem->IsQuadratic();
4066 // get movable nodes of elem
4067 const SMDS_MeshNode* node;
4068 SMDS_TypeOfPosition posType;
4069 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
4070 int nn = 0, nbn = elem->NbNodes();
4071 if(elem->IsQuadratic())
4073 while ( nn++ < nbn ) {
4074 node = static_cast<const SMDS_MeshNode*>( itN->next() );
4075 const SMDS_PositionPtr& pos = node->GetPosition();
4076 posType = pos ? pos->GetTypeOfPosition() : SMDS_TOP_3DSPACE;
4077 if (posType != SMDS_TOP_EDGE &&
4078 posType != SMDS_TOP_VERTEX &&
4079 theFixedNodes.find( node ) == theFixedNodes.end())
4081 // check if all faces around the node are on faceSubMesh
4082 // because a node on edge may be bound to face
4083 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Face);
4085 if ( faceSubMesh ) {
4086 while ( eIt->more() && all ) {
4087 const SMDS_MeshElement* e = eIt->next();
4088 all = faceSubMesh->Contains( e );
4092 setMovableNodes.insert( node );
4094 checkBoundaryNodes = true;
4096 if ( posType == SMDS_TOP_3DSPACE )
4097 checkBoundaryNodes = true;
4100 if ( surface.IsNull() )
4103 // get nodes to check UV
4104 list< const SMDS_MeshNode* > uvCheckNodes;
4105 const SMDS_MeshNode* nodeInFace = 0;
4106 itN = elem->nodesIterator();
4107 nn = 0; nbn = elem->NbNodes();
4108 if(elem->IsQuadratic())
4110 while ( nn++ < nbn ) {
4111 node = static_cast<const SMDS_MeshNode*>( itN->next() );
4112 if ( node->GetPosition()->GetDim() == 2 )
4114 if ( uvMap.find( node ) == uvMap.end() )
4115 uvCheckNodes.push_back( node );
4116 // add nodes of elems sharing node
4117 // SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Face);
4118 // while ( eIt->more() ) {
4119 // const SMDS_MeshElement* e = eIt->next();
4120 // if ( e != elem ) {
4121 // SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4122 // while ( nIt->more() ) {
4123 // const SMDS_MeshNode* n =
4124 // static_cast<const SMDS_MeshNode*>( nIt->next() );
4125 // if ( uvMap.find( n ) == uvMap.end() )
4126 // uvCheckNodes.push_back( n );
4132 list< const SMDS_MeshNode* >::iterator n = uvCheckNodes.begin();
4133 for ( ; n != uvCheckNodes.end(); ++n ) {
4136 const SMDS_PositionPtr& pos = node->GetPosition();
4137 posType = pos ? pos->GetTypeOfPosition() : SMDS_TOP_3DSPACE;
4141 bool toCheck = true;
4142 uv = helper.GetNodeUV( face, node, nodeInFace, &toCheck );
4144 // compute not existing UV
4145 bool project = ( posType == SMDS_TOP_3DSPACE );
4146 // double dist1 = DBL_MAX, dist2 = 0;
4147 // if ( posType != SMDS_TOP_3DSPACE ) {
4148 // dist1 = pNode.SquareDistance( surface->Value( uv.X(), uv.Y() ));
4149 // project = dist1 > fToler2;
4151 if ( project ) { // compute new UV
4153 gp_Pnt pNode = SMESH_TNodeXYZ( node );
4154 if ( !getClosestUV( projector, pNode, newUV )) {
4155 MESSAGE("Node Projection Failed " << node);
4159 newUV.SetX( ElCLib::InPeriod( newUV.X(), u1, u2 ));
4161 newUV.SetY( ElCLib::InPeriod( newUV.Y(), v1, v2 ));
4163 // if ( posType != SMDS_TOP_3DSPACE )
4164 // dist2 = pNode.SquareDistance( surface->Value( newUV.X(), newUV.Y() ));
4165 // if ( dist2 < dist1 )
4169 // store UV in the map
4170 listUV.push_back( uv );
4171 uvMap.insert( make_pair( node, &listUV.back() ));
4173 } // loop on not yet smoothed elements
4175 if ( !faceSubMesh || nbElemOnFace != faceSubMesh->NbElements() )
4176 checkBoundaryNodes = true;
4178 // fix nodes on mesh boundary
4180 if ( checkBoundaryNodes ) {
4181 map< SMESH_TLink, int > linkNbMap; // how many times a link encounters in elemsOnFace
4182 map< SMESH_TLink, int >::iterator link_nb;
4183 // put all elements links to linkNbMap
4184 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4185 for ( ; elemIt != elemsOnFace.end(); ++elemIt ) {
4186 const SMDS_MeshElement* elem = (*elemIt);
4187 int nbn = elem->NbCornerNodes();
4188 // loop on elem links: insert them in linkNbMap
4189 for ( int iN = 0; iN < nbn; ++iN ) {
4190 const SMDS_MeshNode* n1 = elem->GetNode( iN );
4191 const SMDS_MeshNode* n2 = elem->GetNode(( iN+1 ) % nbn);
4192 SMESH_TLink link( n1, n2 );
4193 link_nb = linkNbMap.insert( make_pair( link, 0 )).first;
4197 // remove nodes that are in links encountered only once from setMovableNodes
4198 for ( link_nb = linkNbMap.begin(); link_nb != linkNbMap.end(); ++link_nb ) {
4199 if ( link_nb->second == 1 ) {
4200 setMovableNodes.erase( link_nb->first.node1() );
4201 setMovableNodes.erase( link_nb->first.node2() );
4206 // -----------------------------------------------------
4207 // for nodes on seam edge, compute one more UV ( uvMap2 );
4208 // find movable nodes linked to nodes on seam and which
4209 // are to be smoothed using the second UV ( uvMap2 )
4210 // -----------------------------------------------------
4212 set<const SMDS_MeshNode*> nodesNearSeam; // to smooth using uvMap2
4213 if ( !surface.IsNull() ) {
4214 TopExp_Explorer eExp( face, TopAbs_EDGE );
4215 for ( ; eExp.More(); eExp.Next() ) {
4216 TopoDS_Edge edge = TopoDS::Edge( eExp.Current() );
4217 if ( !BRep_Tool::IsClosed( edge, face ))
4219 SMESHDS_SubMesh* sm = aMesh->MeshElements( edge );
4220 if ( !sm ) continue;
4221 // find out which parameter varies for a node on seam
4224 Handle(Geom2d_Curve) pcurve = BRep_Tool::CurveOnSurface( edge, face, f, l );
4225 if ( pcurve.IsNull() ) continue;
4226 uv1 = pcurve->Value( f );
4228 pcurve = BRep_Tool::CurveOnSurface( edge, face, f, l );
4229 if ( pcurve.IsNull() ) continue;
4230 uv2 = pcurve->Value( f );
4231 int iPar = Abs( uv1.X() - uv2.X() ) > Abs( uv1.Y() - uv2.Y() ) ? 1 : 2;
4233 if ( uv1.Coord( iPar ) > uv2.Coord( iPar ))
4234 std::swap( uv1, uv2 );
4235 // get nodes on seam and its vertices
4236 list< const SMDS_MeshNode* > seamNodes;
4237 SMDS_NodeIteratorPtr nSeamIt = sm->GetNodes();
4238 while ( nSeamIt->more() ) {
4239 const SMDS_MeshNode* node = nSeamIt->next();
4240 if ( !isQuadratic || !IsMedium( node ))
4241 seamNodes.push_back( node );
4243 TopExp_Explorer vExp( edge, TopAbs_VERTEX );
4244 for ( ; vExp.More(); vExp.Next() ) {
4245 sm = aMesh->MeshElements( vExp.Current() );
4247 nSeamIt = sm->GetNodes();
4248 while ( nSeamIt->more() )
4249 seamNodes.push_back( nSeamIt->next() );
4252 // loop on nodes on seam
4253 list< const SMDS_MeshNode* >::iterator noSeIt = seamNodes.begin();
4254 for ( ; noSeIt != seamNodes.end(); ++noSeIt ) {
4255 const SMDS_MeshNode* nSeam = *noSeIt;
4256 map< const SMDS_MeshNode*, gp_XY* >::iterator n_uv = uvMap.find( nSeam );
4257 if ( n_uv == uvMap.end() )
4260 n_uv->second->SetCoord( iPar, uv1.Coord( iPar ));
4261 // set the second UV
4262 listUV.push_back( *n_uv->second );
4263 listUV.back().SetCoord( iPar, uv2.Coord( iPar ));
4264 if ( uvMap2.empty() )
4265 uvMap2 = uvMap; // copy the uvMap contents
4266 uvMap2[ nSeam ] = &listUV.back();
4268 // collect movable nodes linked to ones on seam in nodesNearSeam
4269 SMDS_ElemIteratorPtr eIt = nSeam->GetInverseElementIterator(SMDSAbs_Face);
4270 while ( eIt->more() ) {
4271 const SMDS_MeshElement* e = eIt->next();
4272 int nbUseMap1 = 0, nbUseMap2 = 0;
4273 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4274 int nn = 0, nbn = e->NbNodes();
4275 if(e->IsQuadratic()) nbn = nbn/2;
4276 while ( nn++ < nbn )
4278 const SMDS_MeshNode* n =
4279 static_cast<const SMDS_MeshNode*>( nIt->next() );
4281 setMovableNodes.find( n ) == setMovableNodes.end() )
4283 // add only nodes being closer to uv2 than to uv1
4284 // gp_Pnt pMid (0.5 * ( n->X() + nSeam->X() ),
4285 // 0.5 * ( n->Y() + nSeam->Y() ),
4286 // 0.5 * ( n->Z() + nSeam->Z() ));
4288 // getClosestUV( projector, pMid, uv );
4289 double x = uvMap[ n ]->Coord( iPar );
4290 if ( Abs( uv1.Coord( iPar ) - x ) >
4291 Abs( uv2.Coord( iPar ) - x )) {
4292 nodesNearSeam.insert( n );
4298 // for centroidalSmooth all element nodes must
4299 // be on one side of a seam
4300 if ( theSmoothMethod == CENTROIDAL && nbUseMap1 && nbUseMap2 ) {
4301 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4303 while ( nn++ < nbn ) {
4304 const SMDS_MeshNode* n =
4305 static_cast<const SMDS_MeshNode*>( nIt->next() );
4306 setMovableNodes.erase( n );
4310 } // loop on nodes on seam
4311 } // loop on edge of a face
4312 } // if ( !face.IsNull() )
4314 if ( setMovableNodes.empty() ) {
4315 MESSAGE( "Face id : " << *fId << " - NO SMOOTHING: no nodes to move!!!");
4316 continue; // goto next face
4324 double maxRatio = -1., maxDisplacement = -1.;
4325 set<const SMDS_MeshNode*>::iterator nodeToMove;
4326 for ( it = 0; it < theNbIterations; it++ ) {
4327 maxDisplacement = 0.;
4328 nodeToMove = setMovableNodes.begin();
4329 for ( ; nodeToMove != setMovableNodes.end(); nodeToMove++ ) {
4330 const SMDS_MeshNode* node = (*nodeToMove);
4331 gp_XYZ aPrevPos ( node->X(), node->Y(), node->Z() );
4334 bool map2 = ( nodesNearSeam.find( node ) != nodesNearSeam.end() );
4335 if ( theSmoothMethod == LAPLACIAN )
4336 laplacianSmooth( node, surface, map2 ? uvMap2 : uvMap );
4338 centroidalSmooth( node, surface, map2 ? uvMap2 : uvMap );
4340 // node displacement
4341 gp_XYZ aNewPos ( node->X(), node->Y(), node->Z() );
4342 Standard_Real aDispl = (aPrevPos - aNewPos).SquareModulus();
4343 if ( aDispl > maxDisplacement )
4344 maxDisplacement = aDispl;
4346 // no node movement => exit
4347 //if ( maxDisplacement < 1.e-16 ) {
4348 if ( maxDisplacement < disttol ) {
4349 MESSAGE("-- no node movement --");
4353 // check elements quality
4355 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4356 for ( ; elemIt != elemsOnFace.end(); ++elemIt ) {
4357 const SMDS_MeshElement* elem = (*elemIt);
4358 if ( !elem || elem->GetType() != SMDSAbs_Face )
4360 SMESH::Controls::TSequenceOfXYZ aPoints;
4361 if ( aQualityFunc.GetPoints( elem, aPoints )) {
4362 double aValue = aQualityFunc.GetValue( aPoints );
4363 if ( aValue > maxRatio )
4367 if ( maxRatio <= theTgtAspectRatio ) {
4368 MESSAGE("-- quality achived --");
4371 if (it+1 == theNbIterations) {
4372 MESSAGE("-- Iteration limit exceeded --");
4374 } // smoothing iterations
4376 MESSAGE(" Face id: " << *fId <<
4377 " Nb iterstions: " << it <<
4378 " Displacement: " << maxDisplacement <<
4379 " Aspect Ratio " << maxRatio);
4381 // ---------------------------------------
4382 // new nodes positions are computed,
4383 // record movement in DS and set new UV
4384 // ---------------------------------------
4385 nodeToMove = setMovableNodes.begin();
4386 for ( ; nodeToMove != setMovableNodes.end(); nodeToMove++ ) {
4387 SMDS_MeshNode* node = const_cast< SMDS_MeshNode* > (*nodeToMove);
4388 aMesh->MoveNode( node, node->X(), node->Y(), node->Z() );
4389 map< const SMDS_MeshNode*, gp_XY* >::iterator node_uv = uvMap.find( node );
4390 if ( node_uv != uvMap.end() ) {
4391 gp_XY* uv = node_uv->second;
4393 ( SMDS_PositionPtr( new SMDS_FacePosition( uv->X(), uv->Y() )));
4397 // move medium nodes of quadratic elements
4400 vector<const SMDS_MeshNode*> nodes;
4402 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4403 for ( ; elemIt != elemsOnFace.end(); ++elemIt )
4405 const SMDS_MeshElement* QF = *elemIt;
4406 if ( QF->IsQuadratic() )
4408 nodes.assign( SMDS_MeshElement::iterator( QF->interlacedNodesElemIterator() ),
4409 SMDS_MeshElement::iterator() );
4410 nodes.push_back( nodes[0] );
4412 for (size_t i = 1; i < nodes.size(); i += 2 ) // i points to a medium node
4414 if ( !surface.IsNull() )
4416 gp_XY uv1 = helper.GetNodeUV( face, nodes[i-1], nodes[i+1], &checkUV );
4417 gp_XY uv2 = helper.GetNodeUV( face, nodes[i+1], nodes[i-1], &checkUV );
4418 gp_XY uv = helper.GetMiddleUV( surface, uv1, uv2 );
4419 xyz = surface->Value( uv.X(), uv.Y() );
4422 xyz = 0.5 * ( SMESH_TNodeXYZ( nodes[i-1] ) + SMESH_TNodeXYZ( nodes[i+1] ));
4424 if (( SMESH_TNodeXYZ( nodes[i] ) - xyz.XYZ() ).Modulus() > disttol )
4425 // we have to move a medium node
4426 aMesh->MoveNode( nodes[i], xyz.X(), xyz.Y(), xyz.Z() );
4432 } // loop on face ids
4438 //=======================================================================
4439 //function : isReverse
4440 //purpose : Return true if normal of prevNodes is not co-directied with
4441 // gp_Vec(prevNodes[iNotSame],nextNodes[iNotSame]).
4442 // iNotSame is where prevNodes and nextNodes are different.
4443 // If result is true then future volume orientation is OK
4444 //=======================================================================
4446 bool isReverse(const SMDS_MeshElement* face,
4447 const vector<const SMDS_MeshNode*>& prevNodes,
4448 const vector<const SMDS_MeshNode*>& nextNodes,
4452 SMESH_TNodeXYZ pP = prevNodes[ iNotSame ];
4453 SMESH_TNodeXYZ pN = nextNodes[ iNotSame ];
4454 gp_XYZ extrDir( pN - pP ), faceNorm;
4455 SMESH_MeshAlgos::FaceNormal( face, faceNorm, /*normalized=*/false );
4457 return faceNorm * extrDir < 0.0;
4460 //================================================================================
4462 * \brief Assure that theElemSets[0] holds elements, not nodes
4464 //================================================================================
4466 void setElemsFirst( TIDSortedElemSet theElemSets[2] )
4468 if ( !theElemSets[0].empty() &&
4469 (*theElemSets[0].begin())->GetType() == SMDSAbs_Node )
4471 std::swap( theElemSets[0], theElemSets[1] );
4473 else if ( !theElemSets[1].empty() &&
4474 (*theElemSets[1].begin())->GetType() != SMDSAbs_Node )
4476 std::swap( theElemSets[0], theElemSets[1] );
4481 //=======================================================================
4483 * \brief Create elements by sweeping an element
4484 * \param elem - element to sweep
4485 * \param newNodesItVec - nodes generated from each node of the element
4486 * \param newElems - generated elements
4487 * \param nbSteps - number of sweeping steps
4488 * \param srcElements - to append elem for each generated element
4490 //=======================================================================
4492 void SMESH_MeshEditor::sweepElement(const SMDS_MeshElement* elem,
4493 const vector<TNodeOfNodeListMapItr> & newNodesItVec,
4494 list<const SMDS_MeshElement*>& newElems,
4496 SMESH_SequenceOfElemPtr& srcElements)
4498 //MESSAGE("sweepElement " << nbSteps);
4499 SMESHDS_Mesh* aMesh = GetMeshDS();
4501 const int nbNodes = elem->NbNodes();
4502 const int nbCorners = elem->NbCornerNodes();
4503 SMDSAbs_EntityType baseType = elem->GetEntityType(); /* it can change in case of
4504 polyhedron creation !!! */
4505 // Loop on elem nodes:
4506 // find new nodes and detect same nodes indices
4507 vector < list< const SMDS_MeshNode* >::const_iterator > itNN( nbNodes );
4508 vector<const SMDS_MeshNode*> prevNod( nbNodes );
4509 vector<const SMDS_MeshNode*> nextNod( nbNodes );
4510 vector<const SMDS_MeshNode*> midlNod( nbNodes );
4512 int iNode, nbSame = 0, nbDouble = 0, iNotSameNode = 0;
4513 vector<int> sames(nbNodes);
4514 vector<bool> isSingleNode(nbNodes);
4516 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
4517 TNodeOfNodeListMapItr nnIt = newNodesItVec[ iNode ];
4518 const SMDS_MeshNode* node = nnIt->first;
4519 const list< const SMDS_MeshNode* > & listNewNodes = nnIt->second;
4520 if ( listNewNodes.empty() )
4523 itNN [ iNode ] = listNewNodes.begin();
4524 prevNod[ iNode ] = node;
4525 nextNod[ iNode ] = listNewNodes.front();
4527 isSingleNode[iNode] = (listNewNodes.size()==nbSteps); /* medium node of quadratic or
4528 corner node of linear */
4529 if ( prevNod[ iNode ] != nextNod [ iNode ])
4530 nbDouble += !isSingleNode[iNode];
4532 if( iNode < nbCorners ) { // check corners only
4533 if ( prevNod[ iNode ] == nextNod [ iNode ])
4534 sames[nbSame++] = iNode;
4536 iNotSameNode = iNode;
4540 if ( nbSame == nbNodes || nbSame > 2) {
4541 MESSAGE( " Too many same nodes of element " << elem->GetID() );
4545 if ( elem->GetType() == SMDSAbs_Face && !isReverse( elem, prevNod, nextNod, iNotSameNode ))
4547 // fix nodes order to have bottom normal external
4548 if ( baseType == SMDSEntity_Polygon )
4550 std::reverse( itNN.begin(), itNN.end() );
4551 std::reverse( prevNod.begin(), prevNod.end() );
4552 std::reverse( midlNod.begin(), midlNod.end() );
4553 std::reverse( nextNod.begin(), nextNod.end() );
4554 std::reverse( isSingleNode.begin(), isSingleNode.end() );
4558 const vector<int>& ind = SMDS_MeshCell::reverseSmdsOrder( baseType, nbNodes );
4559 SMDS_MeshCell::applyInterlace( ind, itNN );
4560 SMDS_MeshCell::applyInterlace( ind, prevNod );
4561 SMDS_MeshCell::applyInterlace( ind, nextNod );
4562 SMDS_MeshCell::applyInterlace( ind, midlNod );
4563 SMDS_MeshCell::applyInterlace( ind, isSingleNode );
4566 sames[nbSame] = iNotSameNode;
4567 for ( int j = 0; j <= nbSame; ++j )
4568 for ( size_t i = 0; i < ind.size(); ++i )
4569 if ( ind[i] == sames[j] )
4574 iNotSameNode = sames[nbSame];
4578 else if ( elem->GetType() == SMDSAbs_Edge )
4580 // orient a new face same as adjacent one
4582 const SMDS_MeshElement* e;
4583 TIDSortedElemSet dummy;
4584 if (( e = SMESH_MeshAlgos::FindFaceInSet( nextNod[0], prevNod[0], dummy,dummy, &i1, &i2 )) ||
4585 ( e = SMESH_MeshAlgos::FindFaceInSet( prevNod[1], nextNod[1], dummy,dummy, &i1, &i2 )) ||
4586 ( e = SMESH_MeshAlgos::FindFaceInSet( prevNod[0], prevNod[1], dummy,dummy, &i1, &i2 )))
4588 // there is an adjacent face, check order of nodes in it
4589 bool sameOrder = ( Abs( i2 - i1 ) == 1 ) ? ( i2 > i1 ) : ( i2 < i1 );
4592 std::swap( itNN[0], itNN[1] );
4593 std::swap( prevNod[0], prevNod[1] );
4594 std::swap( nextNod[0], nextNod[1] );
4595 isSingleNode.swap( isSingleNode[0], isSingleNode[1] );
4597 sames[0] = 1 - sames[0];
4598 iNotSameNode = 1 - iNotSameNode;
4603 int iSameNode = 0, iBeforeSame = 0, iAfterSame = 0, iOpposSame = 0;
4605 iSameNode = sames[ nbSame-1 ];
4606 iBeforeSame = ( iSameNode + nbCorners - 1 ) % nbCorners;
4607 iAfterSame = ( iSameNode + 1 ) % nbCorners;
4608 iOpposSame = ( iSameNode - 2 < 0 ? iSameNode + 2 : iSameNode - 2 );
4611 if ( baseType == SMDSEntity_Polygon )
4613 if ( nbNodes == 3 ) baseType = SMDSEntity_Triangle;
4614 else if ( nbNodes == 4 ) baseType = SMDSEntity_Quadrangle;
4616 else if ( baseType == SMDSEntity_Quad_Polygon )
4618 if ( nbNodes == 6 ) baseType = SMDSEntity_Quad_Triangle;
4619 else if ( nbNodes == 8 ) baseType = SMDSEntity_Quad_Quadrangle;
4622 // make new elements
4623 for (int iStep = 0; iStep < nbSteps; iStep++ )
4626 for ( iNode = 0; iNode < nbNodes; iNode++ )
4628 midlNod[ iNode ] = isSingleNode[iNode] ? 0 : *itNN[ iNode ]++;
4629 nextNod[ iNode ] = *itNN[ iNode ]++;
4632 SMDS_MeshElement* aNewElem = 0;
4633 /*if(!elem->IsPoly())*/ {
4634 switch ( baseType ) {
4636 case SMDSEntity_Node: { // sweep NODE
4637 if ( nbSame == 0 ) {
4638 if ( isSingleNode[0] )
4639 aNewElem = aMesh->AddEdge( prevNod[ 0 ], nextNod[ 0 ] );
4641 aNewElem = aMesh->AddEdge( prevNod[ 0 ], nextNod[ 0 ], midlNod[ 0 ] );
4647 case SMDSEntity_Edge: { // sweep EDGE
4648 if ( nbDouble == 0 )
4650 if ( nbSame == 0 ) // ---> quadrangle
4651 aNewElem = aMesh->AddFace(prevNod[ 0 ], prevNod[ 1 ],
4652 nextNod[ 1 ], nextNod[ 0 ] );
4653 else // ---> triangle
4654 aNewElem = aMesh->AddFace(prevNod[ 0 ], prevNod[ 1 ],
4655 nextNod[ iNotSameNode ] );
4657 else // ---> polygon
4659 vector<const SMDS_MeshNode*> poly_nodes;
4660 poly_nodes.push_back( prevNod[0] );
4661 poly_nodes.push_back( prevNod[1] );
4662 if ( prevNod[1] != nextNod[1] )
4664 if ( midlNod[1]) poly_nodes.push_back( midlNod[1]);
4665 poly_nodes.push_back( nextNod[1] );
4667 if ( prevNod[0] != nextNod[0] )
4669 poly_nodes.push_back( nextNod[0] );
4670 if ( midlNod[0]) poly_nodes.push_back( midlNod[0]);
4672 switch ( poly_nodes.size() ) {
4674 aNewElem = aMesh->AddFace( poly_nodes[ 0 ], poly_nodes[ 1 ], poly_nodes[ 2 ]);
4677 aNewElem = aMesh->AddFace( poly_nodes[ 0 ], poly_nodes[ 1 ],
4678 poly_nodes[ 2 ], poly_nodes[ 3 ]);
4681 aNewElem = aMesh->AddPolygonalFace (poly_nodes);
4686 case SMDSEntity_Triangle: // TRIANGLE --->
4688 if ( nbDouble > 0 ) break;
4689 if ( nbSame == 0 ) // ---> pentahedron
4690 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ],
4691 nextNod[ 0 ], nextNod[ 1 ], nextNod[ 2 ] );
4693 else if ( nbSame == 1 ) // ---> pyramid
4694 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iAfterSame ],
4695 nextNod[ iAfterSame ], nextNod[ iBeforeSame ],
4696 nextNod[ iSameNode ]);
4698 else // 2 same nodes: ---> tetrahedron
4699 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ],
4700 nextNod[ iNotSameNode ]);
4703 case SMDSEntity_Quad_Edge: // sweep quadratic EDGE --->
4707 if ( nbDouble+nbSame == 2 )
4709 if(nbSame==0) { // ---> quadratic quadrangle
4710 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1], nextNod[0],
4711 prevNod[2], midlNod[1], nextNod[2], midlNod[0]);
4713 else { //(nbSame==1) // ---> quadratic triangle
4715 return; // medium node on axis
4717 else if(sames[0]==0)
4718 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1],
4719 prevNod[2], midlNod[1], nextNod[2] );
4721 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[0],
4722 prevNod[2], nextNod[2], midlNod[0]);
4725 else if ( nbDouble == 3 )
4727 if ( nbSame == 0 ) { // ---> bi-quadratic quadrangle
4728 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1], nextNod[0],
4729 prevNod[2], midlNod[1], nextNod[2], midlNod[0], midlNod[2]);
4736 case SMDSEntity_Quadrangle: { // sweep QUADRANGLE --->
4737 if ( nbDouble > 0 ) break;
4739 if ( nbSame == 0 ) // ---> hexahedron
4740 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ], prevNod[ 3 ],
4741 nextNod[ 0 ], nextNod[ 1 ], nextNod[ 2 ], nextNod[ 3 ]);
4743 else if ( nbSame == 1 ) { // ---> pyramid + pentahedron
4744 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iAfterSame ],
4745 nextNod[ iAfterSame ], nextNod[ iBeforeSame ],
4746 nextNod[ iSameNode ]);
4747 newElems.push_back( aNewElem );
4748 aNewElem = aMesh->AddVolume (prevNod[ iAfterSame ], prevNod[ iOpposSame ],
4749 prevNod[ iBeforeSame ], nextNod[ iAfterSame ],
4750 nextNod[ iOpposSame ], nextNod[ iBeforeSame ] );
4752 else if ( nbSame == 2 ) { // ---> pentahedron
4753 if ( prevNod[ iBeforeSame ] == nextNod[ iBeforeSame ] )
4754 // iBeforeSame is same too
4755 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iOpposSame ],
4756 nextNod[ iOpposSame ], prevNod[ iSameNode ],
4757 prevNod[ iAfterSame ], nextNod[ iAfterSame ]);
4759 // iAfterSame is same too
4760 aNewElem = aMesh->AddVolume (prevNod[ iSameNode ], prevNod[ iBeforeSame ],
4761 nextNod[ iBeforeSame ], prevNod[ iAfterSame ],
4762 prevNod[ iOpposSame ], nextNod[ iOpposSame ]);
4766 case SMDSEntity_Quad_Triangle: // sweep (Bi)Quadratic TRIANGLE --->
4767 case SMDSEntity_BiQuad_Triangle: /* ??? */ {
4768 if ( nbDouble+nbSame != 3 ) break;
4770 // ---> pentahedron with 15 nodes
4771 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2],
4772 nextNod[0], nextNod[1], nextNod[2],
4773 prevNod[3], prevNod[4], prevNod[5],
4774 nextNod[3], nextNod[4], nextNod[5],
4775 midlNod[0], midlNod[1], midlNod[2]);
4777 else if(nbSame==1) {
4778 // ---> 2d order pyramid of 13 nodes
4779 int apex = iSameNode;
4780 int i0 = ( apex + 1 ) % nbCorners;
4781 int i1 = ( apex - 1 + nbCorners ) % nbCorners;
4785 aNewElem = aMesh->AddVolume(prevNod[i1], prevNod[i0],
4786 nextNod[i0], nextNod[i1], prevNod[apex],
4787 prevNod[i01], midlNod[i0],
4788 nextNod[i01], midlNod[i1],
4789 prevNod[i1a], prevNod[i0a],
4790 nextNod[i0a], nextNod[i1a]);
4792 else if(nbSame==2) {
4793 // ---> 2d order tetrahedron of 10 nodes
4794 int n1 = iNotSameNode;
4795 int n2 = ( n1 + 1 ) % nbCorners;
4796 int n3 = ( n1 + nbCorners - 1 ) % nbCorners;
4800 aNewElem = aMesh->AddVolume (prevNod[n1], prevNod[n2], prevNod[n3], nextNod[n1],
4801 prevNod[n12], prevNod[n23], prevNod[n31],
4802 midlNod[n1], nextNod[n12], nextNod[n31]);
4806 case SMDSEntity_Quad_Quadrangle: { // sweep Quadratic QUADRANGLE --->
4808 if ( nbDouble != 4 ) break;
4809 // ---> hexahedron with 20 nodes
4810 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2], prevNod[3],
4811 nextNod[0], nextNod[1], nextNod[2], nextNod[3],
4812 prevNod[4], prevNod[5], prevNod[6], prevNod[7],
4813 nextNod[4], nextNod[5], nextNod[6], nextNod[7],
4814 midlNod[0], midlNod[1], midlNod[2], midlNod[3]);
4816 else if(nbSame==1) {
4817 // ---> pyramid + pentahedron - can not be created since it is needed
4818 // additional middle node at the center of face
4819 INFOS( " Sweep for face " << elem->GetID() << " can not be created" );
4822 else if( nbSame == 2 ) {
4823 if ( nbDouble != 2 ) break;
4824 // ---> 2d order Pentahedron with 15 nodes
4826 if ( prevNod[ iBeforeSame ] == nextNod[ iBeforeSame ] ) {
4827 // iBeforeSame is same too
4834 // iAfterSame is same too
4844 aNewElem = aMesh->AddVolume (prevNod[n1], prevNod[n2], nextNod[n2],
4845 prevNod[n4], prevNod[n5], nextNod[n5],
4846 prevNod[n12], midlNod[n2], nextNod[n12],
4847 prevNod[n45], midlNod[n5], nextNod[n45],
4848 prevNod[n14], prevNod[n25], nextNod[n25]);
4852 case SMDSEntity_BiQuad_Quadrangle: { // sweep BiQuadratic QUADRANGLE --->
4854 if( nbSame == 0 && nbDouble == 9 ) {
4855 // ---> tri-quadratic hexahedron with 27 nodes
4856 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2], prevNod[3],
4857 nextNod[0], nextNod[1], nextNod[2], nextNod[3],
4858 prevNod[4], prevNod[5], prevNod[6], prevNod[7],
4859 nextNod[4], nextNod[5], nextNod[6], nextNod[7],
4860 midlNod[0], midlNod[1], midlNod[2], midlNod[3],
4861 prevNod[8], // bottom center
4862 midlNod[4], midlNod[5], midlNod[6], midlNod[7],
4863 nextNod[8], // top center
4864 midlNod[8]);// elem center
4872 case SMDSEntity_Polygon: { // sweep POLYGON
4874 if ( nbNodes == 6 && nbSame == 0 && nbDouble == 0 ) {
4875 // ---> hexagonal prism
4876 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2],
4877 prevNod[3], prevNod[4], prevNod[5],
4878 nextNod[0], nextNod[1], nextNod[2],
4879 nextNod[3], nextNod[4], nextNod[5]);
4883 case SMDSEntity_Ball:
4888 } // switch ( baseType )
4891 if ( !aNewElem && elem->GetType() == SMDSAbs_Face ) // try to create a polyherdal prism
4893 if ( baseType != SMDSEntity_Polygon )
4895 const std::vector<int>& ind = SMDS_MeshCell::interlacedSmdsOrder(baseType,nbNodes);
4896 SMDS_MeshCell::applyInterlace( ind, prevNod );
4897 SMDS_MeshCell::applyInterlace( ind, nextNod );
4898 SMDS_MeshCell::applyInterlace( ind, midlNod );
4899 SMDS_MeshCell::applyInterlace( ind, itNN );
4900 SMDS_MeshCell::applyInterlace( ind, isSingleNode );
4901 baseType = SMDSEntity_Polygon; // WARNING: change baseType !!!!
4903 vector<const SMDS_MeshNode*> polyedre_nodes (nbNodes*2 + 4*nbNodes);
4904 vector<int> quantities (nbNodes + 2);
4905 polyedre_nodes.clear();
4909 for (int inode = 0; inode < nbNodes; inode++)
4910 polyedre_nodes.push_back( prevNod[inode] );
4911 quantities.push_back( nbNodes );
4914 polyedre_nodes.push_back( nextNod[0] );
4915 for (int inode = nbNodes; inode-1; --inode )
4916 polyedre_nodes.push_back( nextNod[inode-1] );
4917 quantities.push_back( nbNodes );
4925 const int iQuad = elem->IsQuadratic();
4926 for (int iface = 0; iface < nbNodes; iface += 1+iQuad )
4928 const int prevNbNodes = polyedre_nodes.size(); // to detect degenerated face
4929 int inextface = (iface+1+iQuad) % nbNodes;
4930 int imid = (iface+1) % nbNodes;
4931 polyedre_nodes.push_back( prevNod[inextface] ); // 0
4932 if ( iQuad ) polyedre_nodes.push_back( prevNod[imid] ); // 4
4933 polyedre_nodes.push_back( prevNod[iface] ); // 1
4934 if ( prevNod[iface] != nextNod[iface] ) // 1 != 2
4936 if ( midlNod[ iface ]) polyedre_nodes.push_back( midlNod[ iface ]); // 5
4937 polyedre_nodes.push_back( nextNod[iface] ); // 2
4939 if ( iQuad ) polyedre_nodes.push_back( nextNod[imid] ); // 6
4940 if ( prevNod[inextface] != nextNod[inextface] ) // 0 != 3
4942 polyedre_nodes.push_back( nextNod[inextface] ); // 3
4943 if ( midlNod[ inextface ]) polyedre_nodes.push_back( midlNod[ inextface ]);// 7
4945 const int nbFaceNodes = polyedre_nodes.size() - prevNbNodes;
4946 if ( nbFaceNodes > 2 )
4947 quantities.push_back( nbFaceNodes );
4948 else // degenerated face
4949 polyedre_nodes.resize( prevNbNodes );
4951 aNewElem = aMesh->AddPolyhedralVolume (polyedre_nodes, quantities);
4953 } // try to create a polyherdal prism
4956 newElems.push_back( aNewElem );
4957 myLastCreatedElems.Append(aNewElem);
4958 srcElements.Append( elem );
4961 // set new prev nodes
4962 for ( iNode = 0; iNode < nbNodes; iNode++ )
4963 prevNod[ iNode ] = nextNod[ iNode ];
4968 //=======================================================================
4970 * \brief Create 1D and 2D elements around swept elements
4971 * \param mapNewNodes - source nodes and ones generated from them
4972 * \param newElemsMap - source elements and ones generated from them
4973 * \param elemNewNodesMap - nodes generated from each node of each element
4974 * \param elemSet - all swept elements
4975 * \param nbSteps - number of sweeping steps
4976 * \param srcElements - to append elem for each generated element
4978 //=======================================================================
4980 void SMESH_MeshEditor::makeWalls (TNodeOfNodeListMap & mapNewNodes,
4981 TTElemOfElemListMap & newElemsMap,
4982 TElemOfVecOfNnlmiMap & elemNewNodesMap,
4983 TIDSortedElemSet& elemSet,
4985 SMESH_SequenceOfElemPtr& srcElements)
4987 ASSERT( newElemsMap.size() == elemNewNodesMap.size() );
4988 SMESHDS_Mesh* aMesh = GetMeshDS();
4990 // Find nodes belonging to only one initial element - sweep them into edges.
4992 TNodeOfNodeListMapItr nList = mapNewNodes.begin();
4993 for ( ; nList != mapNewNodes.end(); nList++ )
4995 const SMDS_MeshNode* node =
4996 static_cast<const SMDS_MeshNode*>( nList->first );
4997 if ( newElemsMap.count( node ))
4998 continue; // node was extruded into edge
4999 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator();
5000 int nbInitElems = 0;
5001 const SMDS_MeshElement* el = 0;
5002 SMDSAbs_ElementType highType = SMDSAbs_Edge; // count most complex elements only
5003 while ( eIt->more() && nbInitElems < 2 ) {
5004 const SMDS_MeshElement* e = eIt->next();
5005 SMDSAbs_ElementType type = e->GetType();
5006 if ( type == SMDSAbs_Volume ||
5010 if ( type > highType ) {
5017 if ( nbInitElems == 1 ) {
5018 bool NotCreateEdge = el && el->IsMediumNode(node);
5019 if(!NotCreateEdge) {
5020 vector<TNodeOfNodeListMapItr> newNodesItVec( 1, nList );
5021 list<const SMDS_MeshElement*> newEdges;
5022 sweepElement( node, newNodesItVec, newEdges, nbSteps, srcElements );
5027 // Make a ceiling for each element ie an equal element of last new nodes.
5028 // Find free links of faces - make edges and sweep them into faces.
5030 ElemFeatures polyFace( SMDSAbs_Face, /*isPoly=*/true ), anyFace;
5032 TTElemOfElemListMap::iterator itElem = newElemsMap.begin();
5033 TElemOfVecOfNnlmiMap::iterator itElemNodes = elemNewNodesMap.begin();
5034 for ( ; itElem != newElemsMap.end(); itElem++, itElemNodes++ )
5036 const SMDS_MeshElement* elem = itElem->first;
5037 vector<TNodeOfNodeListMapItr>& vecNewNodes = itElemNodes->second;
5039 if(itElem->second.size()==0) continue;
5041 const bool isQuadratic = elem->IsQuadratic();
5043 if ( elem->GetType() == SMDSAbs_Edge ) {
5044 // create a ceiling edge
5045 if ( !isQuadratic ) {
5046 if ( !aMesh->FindEdge( vecNewNodes[ 0 ]->second.back(),
5047 vecNewNodes[ 1 ]->second.back())) {
5048 myLastCreatedElems.Append(aMesh->AddEdge(vecNewNodes[ 0 ]->second.back(),
5049 vecNewNodes[ 1 ]->second.back()));
5050 srcElements.Append( elem );
5054 if ( !aMesh->FindEdge( vecNewNodes[ 0 ]->second.back(),
5055 vecNewNodes[ 1 ]->second.back(),
5056 vecNewNodes[ 2 ]->second.back())) {
5057 myLastCreatedElems.Append(aMesh->AddEdge(vecNewNodes[ 0 ]->second.back(),
5058 vecNewNodes[ 1 ]->second.back(),
5059 vecNewNodes[ 2 ]->second.back()));
5060 srcElements.Append( elem );
5064 if ( elem->GetType() != SMDSAbs_Face )
5067 bool hasFreeLinks = false;
5069 TIDSortedElemSet avoidSet;
5070 avoidSet.insert( elem );
5072 set<const SMDS_MeshNode*> aFaceLastNodes;
5073 int iNode, nbNodes = vecNewNodes.size();
5074 if ( !isQuadratic ) {
5075 // loop on the face nodes
5076 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
5077 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5078 // look for free links of the face
5079 int iNext = ( iNode + 1 == nbNodes ) ? 0 : iNode + 1;
5080 const SMDS_MeshNode* n1 = vecNewNodes[ iNode ]->first;
5081 const SMDS_MeshNode* n2 = vecNewNodes[ iNext ]->first;
5082 // check if a link n1-n2 is free
5083 if ( ! SMESH_MeshAlgos::FindFaceInSet ( n1, n2, elemSet, avoidSet )) {
5084 hasFreeLinks = true;
5085 // make a new edge and a ceiling for a new edge
5086 const SMDS_MeshElement* edge;
5087 if ( ! ( edge = aMesh->FindEdge( n1, n2 ))) {
5088 myLastCreatedElems.Append( edge = aMesh->AddEdge( n1, n2 )); // free link edge
5089 srcElements.Append( myLastCreatedElems.Last() );
5091 n1 = vecNewNodes[ iNode ]->second.back();
5092 n2 = vecNewNodes[ iNext ]->second.back();
5093 if ( !aMesh->FindEdge( n1, n2 )) {
5094 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2 )); // new edge ceiling
5095 srcElements.Append( edge );
5100 else { // elem is quadratic face
5101 int nbn = nbNodes/2;
5102 for ( iNode = 0; iNode < nbn; iNode++ ) {
5103 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5104 int iNext = ( iNode + 1 == nbn ) ? 0 : iNode + 1;
5105 const SMDS_MeshNode* n1 = vecNewNodes[ iNode ]->first;
5106 const SMDS_MeshNode* n2 = vecNewNodes[ iNext ]->first;
5107 const SMDS_MeshNode* n3 = vecNewNodes[ iNode+nbn ]->first;
5108 // check if a link is free
5109 if ( ! SMESH_MeshAlgos::FindFaceInSet ( n1, n2, elemSet, avoidSet ) &&
5110 ! SMESH_MeshAlgos::FindFaceInSet ( n1, n3, elemSet, avoidSet ) &&
5111 ! SMESH_MeshAlgos::FindFaceInSet ( n3, n2, elemSet, avoidSet ) ) {
5112 hasFreeLinks = true;
5113 // make an edge and a ceiling for a new edge
5115 if ( !aMesh->FindEdge( n1, n2, n3 )) {
5116 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2, n3 )); // free link edge
5117 srcElements.Append( elem );
5119 n1 = vecNewNodes[ iNode ]->second.back();
5120 n2 = vecNewNodes[ iNext ]->second.back();
5121 n3 = vecNewNodes[ iNode+nbn ]->second.back();
5122 if ( !aMesh->FindEdge( n1, n2, n3 )) {
5123 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2, n3 )); // ceiling edge
5124 srcElements.Append( elem );
5128 for ( iNode = nbn; iNode < nbNodes; iNode++ ) {
5129 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5133 // sweep free links into faces
5135 if ( hasFreeLinks ) {
5136 list<const SMDS_MeshElement*> & newVolumes = itElem->second;
5137 int iVol, volNb, nbVolumesByStep = newVolumes.size() / nbSteps;
5139 set<const SMDS_MeshNode*> initNodeSet, topNodeSet, faceNodeSet;
5140 set<const SMDS_MeshNode*> initNodeSetNoCenter/*, topNodeSetNoCenter*/;
5141 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
5142 initNodeSet.insert( vecNewNodes[ iNode ]->first );
5143 topNodeSet .insert( vecNewNodes[ iNode ]->second.back() );
5145 if ( isQuadratic && nbNodes % 2 ) { // node set for the case of a biquadratic
5146 initNodeSetNoCenter = initNodeSet; // swept face and a not biquadratic volume
5147 initNodeSetNoCenter.erase( vecNewNodes.back()->first );
5149 for ( volNb = 0; volNb < nbVolumesByStep; volNb++ ) {
5150 list<const SMDS_MeshElement*>::iterator v = newVolumes.begin();
5151 std::advance( v, volNb );
5152 // find indices of free faces of a volume and their source edges
5153 list< int > freeInd;
5154 list< const SMDS_MeshElement* > srcEdges; // source edges of free faces
5155 SMDS_VolumeTool vTool( *v, /*ignoreCentralNodes=*/false );
5156 int iF, nbF = vTool.NbFaces();
5157 for ( iF = 0; iF < nbF; iF ++ ) {
5158 if (vTool.IsFreeFace( iF ) &&
5159 vTool.GetFaceNodes( iF, faceNodeSet ) &&
5160 initNodeSet != faceNodeSet) // except an initial face
5162 if ( nbSteps == 1 && faceNodeSet == topNodeSet )
5164 if ( faceNodeSet == initNodeSetNoCenter )
5166 freeInd.push_back( iF );
5167 // find source edge of a free face iF
5168 vector<const SMDS_MeshNode*> commonNodes; // shared by the initial and free faces
5169 vector<const SMDS_MeshNode*>::iterator lastCommom;
5170 commonNodes.resize( nbNodes, 0 );
5171 lastCommom = std::set_intersection( faceNodeSet.begin(), faceNodeSet.end(),
5172 initNodeSet.begin(), initNodeSet.end(),
5173 commonNodes.begin());
5174 if ( std::distance( commonNodes.begin(), lastCommom ) == 3 )
5175 srcEdges.push_back(aMesh->FindEdge (commonNodes[0],commonNodes[1],commonNodes[2]));
5177 srcEdges.push_back(aMesh->FindEdge (commonNodes[0],commonNodes[1]));
5179 if ( !srcEdges.back() )
5181 cout << "SMESH_MeshEditor::makeWalls(), no source edge found for a free face #"
5182 << iF << " of volume #" << vTool.ID() << endl;
5187 if ( freeInd.empty() )
5190 // create wall faces for all steps;
5191 // if such a face has been already created by sweep of edge,
5192 // assure that its orientation is OK
5193 for ( int iStep = 0; iStep < nbSteps; iStep++ )
5195 vTool.Set( *v, /*ignoreCentralNodes=*/false );
5196 vTool.SetExternalNormal();
5197 const int nextShift = vTool.IsForward() ? +1 : -1;
5198 list< int >::iterator ind = freeInd.begin();
5199 list< const SMDS_MeshElement* >::iterator srcEdge = srcEdges.begin();
5200 for ( ; ind != freeInd.end(); ++ind, ++srcEdge ) // loop on free faces
5202 const SMDS_MeshNode** nodes = vTool.GetFaceNodes( *ind );
5203 int nbn = vTool.NbFaceNodes( *ind );
5204 const SMDS_MeshElement * f = 0;
5205 if ( nbn == 3 ) ///// triangle
5207 f = aMesh->FindFace( nodes[ 0 ], nodes[ 1 ], nodes[ 2 ]);
5209 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ]) + nextShift ))
5211 const SMDS_MeshNode* newOrder[3] = { nodes[ 1 - nextShift ],
5213 nodes[ 1 + nextShift ] };
5215 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5217 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ], newOrder[ 1 ],
5221 else if ( nbn == 4 ) ///// quadrangle
5223 f = aMesh->FindFace( nodes[ 0 ], nodes[ 1 ], nodes[ 2 ], nodes[ 3 ]);
5225 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ]) + nextShift ))
5227 const SMDS_MeshNode* newOrder[4] = { nodes[ 0 ], nodes[ 2-nextShift ],
5228 nodes[ 2 ], nodes[ 2+nextShift ] };
5230 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5232 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ], newOrder[ 1 ],
5233 newOrder[ 2 ], newOrder[ 3 ]));
5236 else if ( nbn == 6 && isQuadratic ) /////// quadratic triangle
5238 f = aMesh->FindFace( nodes[0], nodes[2], nodes[4], nodes[1], nodes[3], nodes[5] );
5240 nodes[2] != f->GetNodeWrap( f->GetNodeIndex( nodes[0] ) + 2*nextShift ))
5242 const SMDS_MeshNode* newOrder[6] = { nodes[2 - 2*nextShift],
5244 nodes[2 + 2*nextShift],
5245 nodes[3 - 2*nextShift],
5247 nodes[3 + 2*nextShift]};
5249 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5251 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ],
5259 else if ( nbn == 8 && isQuadratic ) /////// quadratic quadrangle
5261 f = aMesh->FindFace( nodes[0], nodes[2], nodes[4], nodes[6],
5262 nodes[1], nodes[3], nodes[5], nodes[7] );
5264 nodes[ 2 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + 2*nextShift ))
5266 const SMDS_MeshNode* newOrder[8] = { nodes[0],
5267 nodes[4 - 2*nextShift],
5269 nodes[4 + 2*nextShift],
5271 nodes[5 - 2*nextShift],
5273 nodes[5 + 2*nextShift] };
5275 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5277 myLastCreatedElems.Append(aMesh->AddFace(newOrder[ 0 ], newOrder[ 1 ],
5278 newOrder[ 2 ], newOrder[ 3 ],
5279 newOrder[ 4 ], newOrder[ 5 ],
5280 newOrder[ 6 ], newOrder[ 7 ]));
5283 else if ( nbn == 9 && isQuadratic ) /////// bi-quadratic quadrangle
5285 f = aMesh->FindElement( vector<const SMDS_MeshNode*>( nodes, nodes+nbn ),
5286 SMDSAbs_Face, /*noMedium=*/false);
5288 nodes[ 2 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + 2*nextShift ))
5290 const SMDS_MeshNode* newOrder[9] = { nodes[0],
5291 nodes[4 - 2*nextShift],
5293 nodes[4 + 2*nextShift],
5295 nodes[5 - 2*nextShift],
5297 nodes[5 + 2*nextShift],
5300 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5302 myLastCreatedElems.Append(aMesh->AddFace(newOrder[ 0 ], newOrder[ 1 ],
5303 newOrder[ 2 ], newOrder[ 3 ],
5304 newOrder[ 4 ], newOrder[ 5 ],
5305 newOrder[ 6 ], newOrder[ 7 ],
5309 else //////// polygon
5311 vector<const SMDS_MeshNode*> polygon_nodes ( nodes, nodes+nbn );
5312 const SMDS_MeshFace * f = aMesh->FindFace( polygon_nodes );
5314 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + nextShift ))
5316 if ( !vTool.IsForward() )
5317 std::reverse( polygon_nodes.begin(), polygon_nodes.end());
5319 aMesh->ChangeElementNodes( f, &polygon_nodes[0], nbn );
5321 AddElement( polygon_nodes, polyFace.SetQuad( (*v)->IsQuadratic() ));
5325 while ( srcElements.Length() < myLastCreatedElems.Length() )
5326 srcElements.Append( *srcEdge );
5328 } // loop on free faces
5330 // go to the next volume
5332 while ( iVol++ < nbVolumesByStep ) v++;
5335 } // loop on volumes of one step
5336 } // sweep free links into faces
5338 // Make a ceiling face with a normal external to a volume
5340 // use SMDS_VolumeTool to get a correctly ordered nodes of a ceiling face
5341 SMDS_VolumeTool lastVol( itElem->second.back(), /*ignoreCentralNodes=*/false );
5342 int iF = lastVol.GetFaceIndex( aFaceLastNodes );
5344 if ( iF < 0 && isQuadratic && nbNodes % 2 ) { // remove a central node of biquadratic
5345 aFaceLastNodes.erase( vecNewNodes.back()->second.back() );
5346 iF = lastVol.GetFaceIndex( aFaceLastNodes );
5350 lastVol.SetExternalNormal();
5351 const SMDS_MeshNode** nodes = lastVol.GetFaceNodes( iF );
5352 const int nbn = lastVol.NbFaceNodes( iF );
5353 vector<const SMDS_MeshNode*> nodeVec( nodes, nodes+nbn );
5354 if ( !hasFreeLinks ||
5355 !aMesh->FindElement( nodeVec, SMDSAbs_Face, /*noMedium=*/false) )
5357 const vector<int>& interlace =
5358 SMDS_MeshCell::interlacedSmdsOrder( elem->GetEntityType(), nbn );
5359 SMDS_MeshCell::applyInterlaceRev( interlace, nodeVec );
5361 AddElement( nodeVec, anyFace.Init( elem ));
5363 while ( srcElements.Length() < myLastCreatedElems.Length() )
5364 srcElements.Append( elem );
5367 } // loop on swept elements
5370 //=======================================================================
5371 //function : RotationSweep
5373 //=======================================================================
5375 SMESH_MeshEditor::PGroupIDs
5376 SMESH_MeshEditor::RotationSweep(TIDSortedElemSet theElemSets[2],
5377 const gp_Ax1& theAxis,
5378 const double theAngle,
5379 const int theNbSteps,
5380 const double theTol,
5381 const bool theMakeGroups,
5382 const bool theMakeWalls)
5384 myLastCreatedElems.Clear();
5385 myLastCreatedNodes.Clear();
5387 // source elements for each generated one
5388 SMESH_SequenceOfElemPtr srcElems, srcNodes;
5390 MESSAGE( "RotationSweep()");
5392 aTrsf.SetRotation( theAxis, theAngle );
5394 aTrsf2.SetRotation( theAxis, theAngle/2. );
5396 gp_Lin aLine( theAxis );
5397 double aSqTol = theTol * theTol;
5399 SMESHDS_Mesh* aMesh = GetMeshDS();
5401 TNodeOfNodeListMap mapNewNodes;
5402 TElemOfVecOfNnlmiMap mapElemNewNodes;
5403 TTElemOfElemListMap newElemsMap;
5405 const bool isQuadraticMesh = bool( myMesh->NbEdges(ORDER_QUADRATIC) +
5406 myMesh->NbFaces(ORDER_QUADRATIC) +
5407 myMesh->NbVolumes(ORDER_QUADRATIC) );
5408 // loop on theElemSets
5409 setElemsFirst( theElemSets );
5410 TIDSortedElemSet::iterator itElem;
5411 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
5413 TIDSortedElemSet& theElems = theElemSets[ is2ndSet ];
5414 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
5415 const SMDS_MeshElement* elem = *itElem;
5416 if ( !elem || elem->GetType() == SMDSAbs_Volume )
5418 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
5419 newNodesItVec.reserve( elem->NbNodes() );
5421 // loop on elem nodes
5422 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
5423 while ( itN->more() )
5425 const SMDS_MeshNode* node = cast2Node( itN->next() );
5427 gp_XYZ aXYZ( node->X(), node->Y(), node->Z() );
5429 aXYZ.Coord( coord[0], coord[1], coord[2] );
5430 bool isOnAxis = ( aLine.SquareDistance( aXYZ ) <= aSqTol );
5432 // check if a node has been already sweeped
5433 TNodeOfNodeListMapItr nIt =
5434 mapNewNodes.insert( make_pair( node, list<const SMDS_MeshNode*>() )).first;
5435 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
5436 if ( listNewNodes.empty() )
5438 // check if we are to create medium nodes between corner ones
5439 bool needMediumNodes = false;
5440 if ( isQuadraticMesh )
5442 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator();
5443 while (it->more() && !needMediumNodes )
5445 const SMDS_MeshElement* invElem = it->next();
5446 if ( invElem != elem && !theElems.count( invElem )) continue;
5447 needMediumNodes = ( invElem->IsQuadratic() && !invElem->IsMediumNode(node) );
5448 if ( !needMediumNodes && invElem->GetEntityType() == SMDSEntity_BiQuad_Quadrangle )
5449 needMediumNodes = true;
5454 const SMDS_MeshNode * newNode = node;
5455 for ( int i = 0; i < theNbSteps; i++ ) {
5457 if ( needMediumNodes ) // create a medium node
5459 aTrsf2.Transforms( coord[0], coord[1], coord[2] );
5460 newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
5461 myLastCreatedNodes.Append(newNode);
5462 srcNodes.Append( node );
5463 listNewNodes.push_back( newNode );
5464 aTrsf2.Transforms( coord[0], coord[1], coord[2] );
5467 aTrsf.Transforms( coord[0], coord[1], coord[2] );
5469 // create a corner node
5470 newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
5471 myLastCreatedNodes.Append(newNode);
5472 srcNodes.Append( node );
5473 listNewNodes.push_back( newNode );
5476 listNewNodes.push_back( newNode );
5477 // if ( needMediumNodes )
5478 // listNewNodes.push_back( newNode );
5482 newNodesItVec.push_back( nIt );
5484 // make new elements
5485 sweepElement( elem, newNodesItVec, newElemsMap[elem], theNbSteps, srcElems );
5490 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], theNbSteps, srcElems );
5492 PGroupIDs newGroupIDs;
5493 if ( theMakeGroups )
5494 newGroupIDs = generateGroups( srcNodes, srcElems, "rotated");
5499 //=======================================================================
5500 //function : ExtrusParam
5501 //purpose : standard construction
5502 //=======================================================================
5504 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const gp_Vec& theStep,
5505 const int theNbSteps,
5507 const double theTolerance):
5509 myFlags( theFlags ),
5510 myTolerance( theTolerance ),
5511 myElemsToUse( NULL )
5513 mySteps = new TColStd_HSequenceOfReal;
5514 const double stepSize = theStep.Magnitude();
5515 for (int i=1; i<=theNbSteps; i++ )
5516 mySteps->Append( stepSize );
5518 if (( theFlags & EXTRUSION_FLAG_SEW ) &&
5519 ( theTolerance > 0 ))
5521 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDirAndSew;
5525 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDir;
5529 //=======================================================================
5530 //function : ExtrusParam
5531 //purpose : steps are given explicitly
5532 //=======================================================================
5534 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const gp_Dir& theDir,
5535 Handle(TColStd_HSequenceOfReal) theSteps,
5537 const double theTolerance):
5539 mySteps( theSteps ),
5540 myFlags( theFlags ),
5541 myTolerance( theTolerance ),
5542 myElemsToUse( NULL )
5544 if (( theFlags & EXTRUSION_FLAG_SEW ) &&
5545 ( theTolerance > 0 ))
5547 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDirAndSew;
5551 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDir;
5555 //=======================================================================
5556 //function : ExtrusParam
5557 //purpose : for extrusion by normal
5558 //=======================================================================
5560 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const double theStepSize,
5561 const int theNbSteps,
5565 mySteps( new TColStd_HSequenceOfReal ),
5566 myFlags( theFlags ),
5568 myElemsToUse( NULL )
5570 for (int i = 0; i < theNbSteps; i++ )
5571 mySteps->Append( theStepSize );
5575 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByNormal1D;
5579 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByNormal2D;
5583 //=======================================================================
5584 //function : ExtrusParam::SetElementsToUse
5585 //purpose : stores elements to use for extrusion by normal, depending on
5586 // state of EXTRUSION_FLAG_USE_INPUT_ELEMS_ONLY flag
5587 //=======================================================================
5589 void SMESH_MeshEditor::ExtrusParam::SetElementsToUse( const TIDSortedElemSet& elems )
5591 myElemsToUse = ToUseInpElemsOnly() ? & elems : 0;
5594 //=======================================================================
5595 //function : ExtrusParam::beginStepIter
5596 //purpose : prepare iteration on steps
5597 //=======================================================================
5599 void SMESH_MeshEditor::ExtrusParam::beginStepIter( bool withMediumNodes )
5601 myWithMediumNodes = withMediumNodes;
5605 //=======================================================================
5606 //function : ExtrusParam::moreSteps
5607 //purpose : are there more steps?
5608 //=======================================================================
5610 bool SMESH_MeshEditor::ExtrusParam::moreSteps()
5612 return myNextStep <= mySteps->Length() || !myCurSteps.empty();
5614 //=======================================================================
5615 //function : ExtrusParam::nextStep
5616 //purpose : returns the next step
5617 //=======================================================================
5619 double SMESH_MeshEditor::ExtrusParam::nextStep()
5622 if ( !myCurSteps.empty() )
5624 res = myCurSteps.back();
5625 myCurSteps.pop_back();
5627 else if ( myNextStep <= mySteps->Length() )
5629 myCurSteps.push_back( mySteps->Value( myNextStep ));
5631 if ( myWithMediumNodes )
5633 myCurSteps.back() /= 2.;
5634 myCurSteps.push_back( myCurSteps.back() );
5641 //=======================================================================
5642 //function : ExtrusParam::makeNodesByDir
5643 //purpose : create nodes for standard extrusion
5644 //=======================================================================
5646 int SMESH_MeshEditor::ExtrusParam::
5647 makeNodesByDir( SMESHDS_Mesh* mesh,
5648 const SMDS_MeshNode* srcNode,
5649 std::list<const SMDS_MeshNode*> & newNodes,
5650 const bool makeMediumNodes)
5652 gp_XYZ p = SMESH_TNodeXYZ( srcNode );
5655 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5657 p += myDir.XYZ() * nextStep();
5658 const SMDS_MeshNode * newNode = mesh->AddNode( p.X(), p.Y(), p.Z() );
5659 newNodes.push_back( newNode );
5664 //=======================================================================
5665 //function : ExtrusParam::makeNodesByDirAndSew
5666 //purpose : create nodes for standard extrusion with sewing
5667 //=======================================================================
5669 int SMESH_MeshEditor::ExtrusParam::
5670 makeNodesByDirAndSew( SMESHDS_Mesh* mesh,
5671 const SMDS_MeshNode* srcNode,
5672 std::list<const SMDS_MeshNode*> & newNodes,
5673 const bool makeMediumNodes)
5675 gp_XYZ P1 = SMESH_TNodeXYZ( srcNode );
5678 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5680 P1 += myDir.XYZ() * nextStep();
5682 // try to search in sequence of existing nodes
5683 // if myNodes.Length()>0 we 'nave to use given sequence
5684 // else - use all nodes of mesh
5685 const SMDS_MeshNode * node = 0;
5686 if ( myNodes.Length() > 0 ) {
5688 for(i=1; i<=myNodes.Length(); i++) {
5689 gp_XYZ P2 = SMESH_TNodeXYZ( myNodes.Value(i) );
5690 if (( P1 - P2 ).SquareModulus() < myTolerance * myTolerance )
5692 node = myNodes.Value(i);
5698 SMDS_NodeIteratorPtr itn = mesh->nodesIterator();
5699 while(itn->more()) {
5700 SMESH_TNodeXYZ P2( itn->next() );
5701 if (( P1 - P2 ).SquareModulus() < myTolerance * myTolerance )
5710 node = mesh->AddNode( P1.X(), P1.Y(), P1.Z() );
5712 newNodes.push_back( node );
5719 //=======================================================================
5720 //function : ExtrusParam::makeNodesByNormal2D
5721 //purpose : create nodes for extrusion using normals of faces
5722 //=======================================================================
5724 int SMESH_MeshEditor::ExtrusParam::
5725 makeNodesByNormal2D( SMESHDS_Mesh* mesh,
5726 const SMDS_MeshNode* srcNode,
5727 std::list<const SMDS_MeshNode*> & newNodes,
5728 const bool makeMediumNodes)
5730 const bool alongAvgNorm = ( myFlags & EXTRUSION_FLAG_BY_AVG_NORMAL );
5732 gp_XYZ p = SMESH_TNodeXYZ( srcNode );
5734 // get normals to faces sharing srcNode
5735 vector< gp_XYZ > norms, baryCenters;
5736 gp_XYZ norm, avgNorm( 0,0,0 );
5737 SMDS_ElemIteratorPtr faceIt = srcNode->GetInverseElementIterator( SMDSAbs_Face );
5738 while ( faceIt->more() )
5740 const SMDS_MeshElement* face = faceIt->next();
5741 if ( myElemsToUse && !myElemsToUse->count( face ))
5743 if ( SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
5745 norms.push_back( norm );
5747 if ( !alongAvgNorm )
5751 for ( SMDS_ElemIteratorPtr nIt = face->nodesIterator(); nIt->more(); ++nbN )
5752 bc += SMESH_TNodeXYZ( nIt->next() );
5753 baryCenters.push_back( bc / nbN );
5758 if ( norms.empty() ) return 0;
5760 double normSize = avgNorm.Modulus();
5761 if ( normSize < std::numeric_limits<double>::min() )
5764 if ( myFlags & EXTRUSION_FLAG_BY_AVG_NORMAL ) // extrude along avgNorm
5767 return makeNodesByDir( mesh, srcNode, newNodes, makeMediumNodes );
5770 avgNorm /= normSize;
5773 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5776 double stepSize = nextStep();
5778 if ( norms.size() > 1 )
5780 for ( size_t iF = 0; iF < norms.size(); ++iF ) // loop on faces
5782 // translate plane of a face
5783 baryCenters[ iF ] += norms[ iF ] * stepSize;
5785 // find point of intersection of the face plane located at baryCenters[ iF ]
5786 // and avgNorm located at pNew
5787 double d = -( norms[ iF ] * baryCenters[ iF ]); // d of plane equation ax+by+cz+d=0
5788 double dot = ( norms[ iF ] * avgNorm );
5789 if ( dot < std::numeric_limits<double>::min() )
5790 dot = stepSize * 1e-3;
5791 double step = -( norms[ iF ] * pNew + d ) / dot;
5792 pNew += step * avgNorm;
5797 pNew += stepSize * avgNorm;
5801 const SMDS_MeshNode * newNode = mesh->AddNode( p.X(), p.Y(), p.Z() );
5802 newNodes.push_back( newNode );
5807 //=======================================================================
5808 //function : ExtrusParam::makeNodesByNormal1D
5809 //purpose : create nodes for extrusion using normals of edges
5810 //=======================================================================
5812 int SMESH_MeshEditor::ExtrusParam::
5813 makeNodesByNormal1D( SMESHDS_Mesh* mesh,
5814 const SMDS_MeshNode* srcNode,
5815 std::list<const SMDS_MeshNode*> & newNodes,
5816 const bool makeMediumNodes)
5818 throw SALOME_Exception("Extrusion 1D by Normal not implemented");
5822 //=======================================================================
5823 //function : ExtrusionSweep
5825 //=======================================================================
5827 SMESH_MeshEditor::PGroupIDs
5828 SMESH_MeshEditor::ExtrusionSweep (TIDSortedElemSet theElems[2],
5829 const gp_Vec& theStep,
5830 const int theNbSteps,
5831 TTElemOfElemListMap& newElemsMap,
5833 const double theTolerance)
5835 ExtrusParam aParams( theStep, theNbSteps, theFlags, theTolerance );
5836 return ExtrusionSweep( theElems, aParams, newElemsMap );
5840 //=======================================================================
5841 //function : ExtrusionSweep
5843 //=======================================================================
5845 SMESH_MeshEditor::PGroupIDs
5846 SMESH_MeshEditor::ExtrusionSweep (TIDSortedElemSet theElemSets[2],
5847 ExtrusParam& theParams,
5848 TTElemOfElemListMap& newElemsMap)
5850 myLastCreatedElems.Clear();
5851 myLastCreatedNodes.Clear();
5853 // source elements for each generated one
5854 SMESH_SequenceOfElemPtr srcElems, srcNodes;
5856 SMESHDS_Mesh* aMesh = GetMeshDS();
5858 setElemsFirst( theElemSets );
5859 const int nbSteps = theParams.NbSteps();
5860 theParams.SetElementsToUse( theElemSets[0] );
5862 TNodeOfNodeListMap mapNewNodes;
5863 //TNodeOfNodeVecMap mapNewNodes;
5864 TElemOfVecOfNnlmiMap mapElemNewNodes;
5865 //TElemOfVecOfMapNodesMap mapElemNewNodes;
5867 const bool isQuadraticMesh = bool( myMesh->NbEdges(ORDER_QUADRATIC) +
5868 myMesh->NbFaces(ORDER_QUADRATIC) +
5869 myMesh->NbVolumes(ORDER_QUADRATIC) );
5871 TIDSortedElemSet::iterator itElem;
5872 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
5874 TIDSortedElemSet& theElems = theElemSets[ is2ndSet ];
5875 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
5877 // check element type
5878 const SMDS_MeshElement* elem = *itElem;
5879 if ( !elem || elem->GetType() == SMDSAbs_Volume )
5882 const size_t nbNodes = elem->NbNodes();
5883 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
5884 newNodesItVec.reserve( nbNodes );
5886 // loop on elem nodes
5887 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
5888 while ( itN->more() )
5890 // check if a node has been already sweeped
5891 const SMDS_MeshNode* node = cast2Node( itN->next() );
5892 TNodeOfNodeListMap::iterator nIt =
5893 mapNewNodes.insert( make_pair( node, list<const SMDS_MeshNode*>() )).first;
5894 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
5895 if ( listNewNodes.empty() )
5899 // check if we are to create medium nodes between corner ones
5900 bool needMediumNodes = false;
5901 if ( isQuadraticMesh )
5903 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator();
5904 while (it->more() && !needMediumNodes )
5906 const SMDS_MeshElement* invElem = it->next();
5907 if ( invElem != elem && !theElems.count( invElem )) continue;
5908 needMediumNodes = ( invElem->IsQuadratic() && !invElem->IsMediumNode(node) );
5909 if ( !needMediumNodes && invElem->GetEntityType() == SMDSEntity_BiQuad_Quadrangle )
5910 needMediumNodes = true;
5913 // create nodes for all steps
5914 if ( theParams.MakeNodes( GetMeshDS(), node, listNewNodes, needMediumNodes ))
5916 list<const SMDS_MeshNode*>::iterator newNodesIt = listNewNodes.begin();
5917 for ( ; newNodesIt != listNewNodes.end(); ++newNodesIt )
5919 myLastCreatedNodes.Append( *newNodesIt );
5920 srcNodes.Append( node );
5925 break; // newNodesItVec will be shorter than nbNodes
5928 newNodesItVec.push_back( nIt );
5930 // make new elements
5931 if ( newNodesItVec.size() == nbNodes )
5932 sweepElement( elem, newNodesItVec, newElemsMap[elem], nbSteps, srcElems );
5936 if ( theParams.ToMakeBoundary() ) {
5937 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], nbSteps, srcElems );
5939 PGroupIDs newGroupIDs;
5940 if ( theParams.ToMakeGroups() )
5941 newGroupIDs = generateGroups( srcNodes, srcElems, "extruded");
5946 //=======================================================================
5947 //function : ExtrusionAlongTrack
5949 //=======================================================================
5950 SMESH_MeshEditor::Extrusion_Error
5951 SMESH_MeshEditor::ExtrusionAlongTrack (TIDSortedElemSet theElements[2],
5952 SMESH_subMesh* theTrack,
5953 const SMDS_MeshNode* theN1,
5954 const bool theHasAngles,
5955 list<double>& theAngles,
5956 const bool theLinearVariation,
5957 const bool theHasRefPoint,
5958 const gp_Pnt& theRefPoint,
5959 const bool theMakeGroups)
5961 MESSAGE("ExtrusionAlongTrack");
5962 myLastCreatedElems.Clear();
5963 myLastCreatedNodes.Clear();
5966 std::list<double> aPrms;
5967 TIDSortedElemSet::iterator itElem;
5970 TopoDS_Edge aTrackEdge;
5971 TopoDS_Vertex aV1, aV2;
5973 SMDS_ElemIteratorPtr aItE;
5974 SMDS_NodeIteratorPtr aItN;
5975 SMDSAbs_ElementType aTypeE;
5977 TNodeOfNodeListMap mapNewNodes;
5980 aNbE = theElements[0].size() + theElements[1].size();
5983 return EXTR_NO_ELEMENTS;
5985 // 1.1 Track Pattern
5988 SMESHDS_SubMesh* pSubMeshDS = theTrack->GetSubMeshDS();
5990 aItE = pSubMeshDS->GetElements();
5991 while ( aItE->more() ) {
5992 const SMDS_MeshElement* pE = aItE->next();
5993 aTypeE = pE->GetType();
5994 // Pattern must contain links only
5995 if ( aTypeE != SMDSAbs_Edge )
5996 return EXTR_PATH_NOT_EDGE;
5999 list<SMESH_MeshEditor_PathPoint> fullList;
6001 const TopoDS_Shape& aS = theTrack->GetSubShape();
6002 // Sub-shape for the Pattern must be an Edge or Wire
6003 if( aS.ShapeType() == TopAbs_EDGE ) {
6004 aTrackEdge = TopoDS::Edge( aS );
6005 // the Edge must not be degenerated
6006 if ( SMESH_Algo::isDegenerated( aTrackEdge ) )
6007 return EXTR_BAD_PATH_SHAPE;
6008 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6009 aItN = theTrack->GetFather()->GetSubMesh( aV1 )->GetSubMeshDS()->GetNodes();
6010 const SMDS_MeshNode* aN1 = aItN->next();
6011 aItN = theTrack->GetFather()->GetSubMesh( aV2 )->GetSubMeshDS()->GetNodes();
6012 const SMDS_MeshNode* aN2 = aItN->next();
6013 // starting node must be aN1 or aN2
6014 if ( !( aN1 == theN1 || aN2 == theN1 ) )
6015 return EXTR_BAD_STARTING_NODE;
6016 aItN = pSubMeshDS->GetNodes();
6017 while ( aItN->more() ) {
6018 const SMDS_MeshNode* pNode = aItN->next();
6019 const SMDS_EdgePosition* pEPos =
6020 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6021 double aT = pEPos->GetUParameter();
6022 aPrms.push_back( aT );
6024 //Extrusion_Error err =
6025 MakeEdgePathPoints(aPrms, aTrackEdge, (aN1==theN1), fullList);
6026 } else if( aS.ShapeType() == TopAbs_WIRE ) {
6027 list< SMESH_subMesh* > LSM;
6028 TopTools_SequenceOfShape Edges;
6029 SMESH_subMeshIteratorPtr itSM = theTrack->getDependsOnIterator(false,true);
6030 while(itSM->more()) {
6031 SMESH_subMesh* SM = itSM->next();
6033 const TopoDS_Shape& aS = SM->GetSubShape();
6036 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6037 int startNid = theN1->GetID();
6038 TColStd_MapOfInteger UsedNums;
6040 int NbEdges = Edges.Length();
6042 for(; i<=NbEdges; i++) {
6044 list< SMESH_subMesh* >::iterator itLSM = LSM.begin();
6045 for(; itLSM!=LSM.end(); itLSM++) {
6047 if(UsedNums.Contains(k)) continue;
6048 aTrackEdge = TopoDS::Edge( Edges.Value(k) );
6049 SMESH_subMesh* locTrack = *itLSM;
6050 SMESHDS_SubMesh* locMeshDS = locTrack->GetSubMeshDS();
6051 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6052 aItN = locTrack->GetFather()->GetSubMesh(aV1)->GetSubMeshDS()->GetNodes();
6053 const SMDS_MeshNode* aN1 = aItN->next();
6054 aItN = locTrack->GetFather()->GetSubMesh(aV2)->GetSubMeshDS()->GetNodes();
6055 const SMDS_MeshNode* aN2 = aItN->next();
6056 // starting node must be aN1 or aN2
6057 if ( !( aN1->GetID() == startNid || aN2->GetID() == startNid ) ) continue;
6058 // 2. Collect parameters on the track edge
6060 aItN = locMeshDS->GetNodes();
6061 while ( aItN->more() ) {
6062 const SMDS_MeshNode* pNode = aItN->next();
6063 const SMDS_EdgePosition* pEPos =
6064 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6065 double aT = pEPos->GetUParameter();
6066 aPrms.push_back( aT );
6068 list<SMESH_MeshEditor_PathPoint> LPP;
6069 //Extrusion_Error err =
6070 MakeEdgePathPoints(aPrms, aTrackEdge,(aN1->GetID()==startNid), LPP);
6071 LLPPs.push_back(LPP);
6073 // update startN for search following egde
6074 if( aN1->GetID() == startNid ) startNid = aN2->GetID();
6075 else startNid = aN1->GetID();
6079 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6080 list<SMESH_MeshEditor_PathPoint> firstList = *itLLPP;
6081 list<SMESH_MeshEditor_PathPoint>::iterator itPP = firstList.begin();
6082 for(; itPP!=firstList.end(); itPP++) {
6083 fullList.push_back( *itPP );
6085 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6086 fullList.pop_back();
6088 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6089 list<SMESH_MeshEditor_PathPoint> currList = *itLLPP;
6090 itPP = currList.begin();
6091 SMESH_MeshEditor_PathPoint PP2 = currList.front();
6092 gp_Dir D1 = PP1.Tangent();
6093 gp_Dir D2 = PP2.Tangent();
6094 gp_Dir Dnew( gp_Vec( (D1.X()+D2.X())/2, (D1.Y()+D2.Y())/2,
6095 (D1.Z()+D2.Z())/2 ) );
6096 PP1.SetTangent(Dnew);
6097 fullList.push_back(PP1);
6099 for(; itPP!=firstList.end(); itPP++) {
6100 fullList.push_back( *itPP );
6102 PP1 = fullList.back();
6103 fullList.pop_back();
6105 // if wire not closed
6106 fullList.push_back(PP1);
6110 return EXTR_BAD_PATH_SHAPE;
6113 return MakeExtrElements(theElements, fullList, theHasAngles, theAngles, theLinearVariation,
6114 theHasRefPoint, theRefPoint, theMakeGroups);
6118 //=======================================================================
6119 //function : ExtrusionAlongTrack
6121 //=======================================================================
6122 SMESH_MeshEditor::Extrusion_Error
6123 SMESH_MeshEditor::ExtrusionAlongTrack (TIDSortedElemSet theElements[2],
6124 SMESH_Mesh* theTrack,
6125 const SMDS_MeshNode* theN1,
6126 const bool theHasAngles,
6127 list<double>& theAngles,
6128 const bool theLinearVariation,
6129 const bool theHasRefPoint,
6130 const gp_Pnt& theRefPoint,
6131 const bool theMakeGroups)
6133 myLastCreatedElems.Clear();
6134 myLastCreatedNodes.Clear();
6137 std::list<double> aPrms;
6138 TIDSortedElemSet::iterator itElem;
6141 TopoDS_Edge aTrackEdge;
6142 TopoDS_Vertex aV1, aV2;
6144 SMDS_ElemIteratorPtr aItE;
6145 SMDS_NodeIteratorPtr aItN;
6146 SMDSAbs_ElementType aTypeE;
6148 TNodeOfNodeListMap mapNewNodes;
6151 aNbE = theElements[0].size() + theElements[1].size();
6154 return EXTR_NO_ELEMENTS;
6156 // 1.1 Track Pattern
6159 SMESHDS_Mesh* pMeshDS = theTrack->GetMeshDS();
6161 aItE = pMeshDS->elementsIterator();
6162 while ( aItE->more() ) {
6163 const SMDS_MeshElement* pE = aItE->next();
6164 aTypeE = pE->GetType();
6165 // Pattern must contain links only
6166 if ( aTypeE != SMDSAbs_Edge )
6167 return EXTR_PATH_NOT_EDGE;
6170 list<SMESH_MeshEditor_PathPoint> fullList;
6172 const TopoDS_Shape& aS = theTrack->GetShapeToMesh();
6174 if ( !theTrack->HasShapeToMesh() ) {
6175 //Mesh without shape
6176 const SMDS_MeshNode* currentNode = NULL;
6177 const SMDS_MeshNode* prevNode = theN1;
6178 std::vector<const SMDS_MeshNode*> aNodesList;
6179 aNodesList.push_back(theN1);
6180 int nbEdges = 0, conn=0;
6181 const SMDS_MeshElement* prevElem = NULL;
6182 const SMDS_MeshElement* currentElem = NULL;
6183 int totalNbEdges = theTrack->NbEdges();
6184 SMDS_ElemIteratorPtr nIt;
6187 if( !theTrack->GetMeshDS()->Contains(theN1) ) {
6188 return EXTR_BAD_STARTING_NODE;
6191 conn = nbEdgeConnectivity(theN1);
6193 return EXTR_PATH_NOT_EDGE;
6195 aItE = theN1->GetInverseElementIterator();
6196 prevElem = aItE->next();
6197 currentElem = prevElem;
6199 if(totalNbEdges == 1 ) {
6200 nIt = currentElem->nodesIterator();
6201 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6202 if(currentNode == prevNode)
6203 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6204 aNodesList.push_back(currentNode);
6206 nIt = currentElem->nodesIterator();
6207 while( nIt->more() ) {
6208 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6209 if(currentNode == prevNode)
6210 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6211 aNodesList.push_back(currentNode);
6213 //case of the closed mesh
6214 if(currentNode == theN1) {
6219 conn = nbEdgeConnectivity(currentNode);
6221 return EXTR_PATH_NOT_EDGE;
6222 }else if( conn == 1 && nbEdges > 0 ) {
6227 prevNode = currentNode;
6228 aItE = currentNode->GetInverseElementIterator();
6229 currentElem = aItE->next();
6230 if( currentElem == prevElem)
6231 currentElem = aItE->next();
6232 nIt = currentElem->nodesIterator();
6233 prevElem = currentElem;
6239 if(nbEdges != totalNbEdges)
6240 return EXTR_PATH_NOT_EDGE;
6242 TopTools_SequenceOfShape Edges;
6243 double x1,x2,y1,y2,z1,z2;
6244 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6245 int startNid = theN1->GetID();
6246 for(int i = 1; i < aNodesList.size(); i++) {
6247 x1 = aNodesList[i-1]->X();x2 = aNodesList[i]->X();
6248 y1 = aNodesList[i-1]->Y();y2 = aNodesList[i]->Y();
6249 z1 = aNodesList[i-1]->Z();z2 = aNodesList[i]->Z();
6250 TopoDS_Edge e = BRepBuilderAPI_MakeEdge(gp_Pnt(x1,y1,z1),gp_Pnt(x2,y2,z2));
6251 list<SMESH_MeshEditor_PathPoint> LPP;
6253 MakeEdgePathPoints(aPrms, e, (aNodesList[i-1]->GetID()==startNid), LPP);
6254 LLPPs.push_back(LPP);
6255 if( aNodesList[i-1]->GetID() == startNid ) startNid = aNodesList[i]->GetID();
6256 else startNid = aNodesList[i-1]->GetID();
6260 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6261 list<SMESH_MeshEditor_PathPoint> firstList = *itLLPP;
6262 list<SMESH_MeshEditor_PathPoint>::iterator itPP = firstList.begin();
6263 for(; itPP!=firstList.end(); itPP++) {
6264 fullList.push_back( *itPP );
6267 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6268 SMESH_MeshEditor_PathPoint PP2;
6269 fullList.pop_back();
6271 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6272 list<SMESH_MeshEditor_PathPoint> currList = *itLLPP;
6273 itPP = currList.begin();
6274 PP2 = currList.front();
6275 gp_Dir D1 = PP1.Tangent();
6276 gp_Dir D2 = PP2.Tangent();
6277 gp_Dir Dnew( gp_Vec( (D1.X()+D2.X())/2, (D1.Y()+D2.Y())/2,
6278 (D1.Z()+D2.Z())/2 ) );
6279 PP1.SetTangent(Dnew);
6280 fullList.push_back(PP1);
6282 for(; itPP!=currList.end(); itPP++) {
6283 fullList.push_back( *itPP );
6285 PP1 = fullList.back();
6286 fullList.pop_back();
6288 fullList.push_back(PP1);
6290 } // Sub-shape for the Pattern must be an Edge or Wire
6291 else if( aS.ShapeType() == TopAbs_EDGE ) {
6292 aTrackEdge = TopoDS::Edge( aS );
6293 // the Edge must not be degenerated
6294 if ( SMESH_Algo::isDegenerated( aTrackEdge ) )
6295 return EXTR_BAD_PATH_SHAPE;
6296 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6297 const SMDS_MeshNode* aN1 = SMESH_Algo::VertexNode( aV1, pMeshDS );
6298 const SMDS_MeshNode* aN2 = SMESH_Algo::VertexNode( aV2, pMeshDS );
6299 // starting node must be aN1 or aN2
6300 if ( !( aN1 == theN1 || aN2 == theN1 ) )
6301 return EXTR_BAD_STARTING_NODE;
6302 aItN = pMeshDS->nodesIterator();
6303 while ( aItN->more() ) {
6304 const SMDS_MeshNode* pNode = aItN->next();
6305 if( pNode==aN1 || pNode==aN2 ) continue;
6306 const SMDS_EdgePosition* pEPos =
6307 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6308 double aT = pEPos->GetUParameter();
6309 aPrms.push_back( aT );
6311 //Extrusion_Error err =
6312 MakeEdgePathPoints(aPrms, aTrackEdge, (aN1==theN1), fullList);
6314 else if( aS.ShapeType() == TopAbs_WIRE ) {
6315 list< SMESH_subMesh* > LSM;
6316 TopTools_SequenceOfShape Edges;
6317 TopExp_Explorer eExp(aS, TopAbs_EDGE);
6318 for(; eExp.More(); eExp.Next()) {
6319 TopoDS_Edge E = TopoDS::Edge( eExp.Current() );
6320 if( SMESH_Algo::isDegenerated(E) ) continue;
6321 SMESH_subMesh* SM = theTrack->GetSubMesh(E);
6327 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6328 TopoDS_Vertex aVprev;
6329 TColStd_MapOfInteger UsedNums;
6330 int NbEdges = Edges.Length();
6332 for(; i<=NbEdges; i++) {
6334 list< SMESH_subMesh* >::iterator itLSM = LSM.begin();
6335 for(; itLSM!=LSM.end(); itLSM++) {
6337 if(UsedNums.Contains(k)) continue;
6338 aTrackEdge = TopoDS::Edge( Edges.Value(k) );
6339 SMESH_subMesh* locTrack = *itLSM;
6340 SMESHDS_SubMesh* locMeshDS = locTrack->GetSubMeshDS();
6341 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6342 bool aN1isOK = false, aN2isOK = false;
6343 if ( aVprev.IsNull() ) {
6344 // if previous vertex is not yet defined, it means that we in the beginning of wire
6345 // and we have to find initial vertex corresponding to starting node theN1
6346 const SMDS_MeshNode* aN1 = SMESH_Algo::VertexNode( aV1, pMeshDS );
6347 const SMDS_MeshNode* aN2 = SMESH_Algo::VertexNode( aV2, pMeshDS );
6348 // starting node must be aN1 or aN2
6349 aN1isOK = ( aN1 && aN1 == theN1 );
6350 aN2isOK = ( aN2 && aN2 == theN1 );
6353 // we have specified ending vertex of the previous edge on the previous iteration
6354 // and we have just to check that it corresponds to any vertex in current segment
6355 aN1isOK = aVprev.IsSame( aV1 );
6356 aN2isOK = aVprev.IsSame( aV2 );
6358 if ( !aN1isOK && !aN2isOK ) continue;
6359 // 2. Collect parameters on the track edge
6361 aItN = locMeshDS->GetNodes();
6362 while ( aItN->more() ) {
6363 const SMDS_MeshNode* pNode = aItN->next();
6364 const SMDS_EdgePosition* pEPos =
6365 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6366 double aT = pEPos->GetUParameter();
6367 aPrms.push_back( aT );
6369 list<SMESH_MeshEditor_PathPoint> LPP;
6370 //Extrusion_Error err =
6371 MakeEdgePathPoints(aPrms, aTrackEdge, aN1isOK, LPP);
6372 LLPPs.push_back(LPP);
6374 // update startN for search following egde
6375 if ( aN1isOK ) aVprev = aV2;
6380 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6381 list<SMESH_MeshEditor_PathPoint>& firstList = *itLLPP;
6382 fullList.splice( fullList.end(), firstList );
6384 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6385 fullList.pop_back();
6387 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6388 list<SMESH_MeshEditor_PathPoint>& currList = *itLLPP;
6389 SMESH_MeshEditor_PathPoint PP2 = currList.front();
6390 gp_Dir D1 = PP1.Tangent();
6391 gp_Dir D2 = PP2.Tangent();
6392 gp_Dir Dnew( ( D1.XYZ() + D2.XYZ() ) / 2 );
6393 PP1.SetTangent(Dnew);
6394 fullList.push_back(PP1);
6395 fullList.splice( fullList.end(), currList, ++currList.begin(), currList.end() );
6396 PP1 = fullList.back();
6397 fullList.pop_back();
6399 // if wire not closed
6400 fullList.push_back(PP1);
6404 return EXTR_BAD_PATH_SHAPE;
6407 return MakeExtrElements(theElements, fullList, theHasAngles, theAngles, theLinearVariation,
6408 theHasRefPoint, theRefPoint, theMakeGroups);
6412 //=======================================================================
6413 //function : MakeEdgePathPoints
6414 //purpose : auxilary for ExtrusionAlongTrack
6415 //=======================================================================
6416 SMESH_MeshEditor::Extrusion_Error
6417 SMESH_MeshEditor::MakeEdgePathPoints(std::list<double>& aPrms,
6418 const TopoDS_Edge& aTrackEdge,
6420 list<SMESH_MeshEditor_PathPoint>& LPP)
6422 Standard_Real aTx1, aTx2, aL2, aTolVec, aTolVec2;
6424 aTolVec2=aTolVec*aTolVec;
6426 TopoDS_Vertex aV1, aV2;
6427 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6428 aT1=BRep_Tool::Parameter( aV1, aTrackEdge );
6429 aT2=BRep_Tool::Parameter( aV2, aTrackEdge );
6430 // 2. Collect parameters on the track edge
6431 aPrms.push_front( aT1 );
6432 aPrms.push_back( aT2 );
6435 if( FirstIsStart ) {
6446 SMESH_MeshEditor_PathPoint aPP;
6447 Handle(Geom_Curve) aC3D = BRep_Tool::Curve( aTrackEdge, aTx1, aTx2 );
6448 std::list<double>::iterator aItD = aPrms.begin();
6449 for(; aItD != aPrms.end(); ++aItD) {
6453 aC3D->D1( aT, aP3D, aVec );
6454 aL2 = aVec.SquareMagnitude();
6455 if ( aL2 < aTolVec2 )
6456 return EXTR_CANT_GET_TANGENT;
6457 gp_Dir aTgt( aVec );
6459 aPP.SetTangent( aTgt );
6460 aPP.SetParameter( aT );
6467 //=======================================================================
6468 //function : MakeExtrElements
6469 //purpose : auxilary for ExtrusionAlongTrack
6470 //=======================================================================
6471 SMESH_MeshEditor::Extrusion_Error
6472 SMESH_MeshEditor::MakeExtrElements(TIDSortedElemSet theElemSets[2],
6473 list<SMESH_MeshEditor_PathPoint>& fullList,
6474 const bool theHasAngles,
6475 list<double>& theAngles,
6476 const bool theLinearVariation,
6477 const bool theHasRefPoint,
6478 const gp_Pnt& theRefPoint,
6479 const bool theMakeGroups)
6481 const int aNbTP = fullList.size();
6483 if( theHasAngles && !theAngles.empty() && theLinearVariation )
6484 LinearAngleVariation(aNbTP-1, theAngles);
6485 // fill vector of path points with angles
6486 vector<SMESH_MeshEditor_PathPoint> aPPs;
6487 list<SMESH_MeshEditor_PathPoint>::iterator itPP = fullList.begin();
6488 list<double>::iterator itAngles = theAngles.begin();
6489 aPPs.push_back( *itPP++ );
6490 for( ; itPP != fullList.end(); itPP++) {
6491 aPPs.push_back( *itPP );
6492 if ( theHasAngles && itAngles != theAngles.end() )
6493 aPPs.back().SetAngle( *itAngles++ );
6496 TNodeOfNodeListMap mapNewNodes;
6497 TElemOfVecOfNnlmiMap mapElemNewNodes;
6498 TTElemOfElemListMap newElemsMap;
6499 TIDSortedElemSet::iterator itElem;
6500 // source elements for each generated one
6501 SMESH_SequenceOfElemPtr srcElems, srcNodes;
6503 // 3. Center of rotation aV0
6504 gp_Pnt aV0 = theRefPoint;
6505 if ( !theHasRefPoint )
6507 gp_XYZ aGC( 0.,0.,0. );
6508 TIDSortedElemSet newNodes;
6510 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
6512 TIDSortedElemSet& theElements = theElemSets[ is2ndSet ];
6513 itElem = theElements.begin();
6514 for ( ; itElem != theElements.end(); itElem++ ) {
6515 const SMDS_MeshElement* elem = *itElem;
6517 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6518 while ( itN->more() ) {
6519 const SMDS_MeshElement* node = itN->next();
6520 if ( newNodes.insert( node ).second )
6521 aGC += SMESH_TNodeXYZ( node );
6525 aGC /= newNodes.size();
6527 } // if (!theHasRefPoint) {
6529 // 4. Processing the elements
6530 SMESHDS_Mesh* aMesh = GetMeshDS();
6532 setElemsFirst( theElemSets );
6533 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
6535 TIDSortedElemSet& theElements = theElemSets[ is2ndSet ];
6536 for ( itElem = theElements.begin(); itElem != theElements.end(); itElem++ ) {
6537 // check element type
6538 const SMDS_MeshElement* elem = *itElem;
6541 // SMDSAbs_ElementType aTypeE = elem->GetType();
6542 // if ( aTypeE != SMDSAbs_Face && aTypeE != SMDSAbs_Edge )
6545 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
6546 newNodesItVec.reserve( elem->NbNodes() );
6548 // loop on elem nodes
6550 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6551 while ( itN->more() )
6554 // check if a node has been already processed
6555 const SMDS_MeshNode* node =
6556 static_cast<const SMDS_MeshNode*>( itN->next() );
6557 TNodeOfNodeListMap::iterator nIt = mapNewNodes.find( node );
6558 if ( nIt == mapNewNodes.end() ) {
6559 nIt = mapNewNodes.insert( make_pair( node, list<const SMDS_MeshNode*>() )).first;
6560 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
6563 Standard_Real aAngle1x, aAngleT1T0, aTolAng;
6564 gp_Pnt aP0x, aP1x, aPN0, aPN1, aV0x, aV1x;
6565 gp_Ax1 anAx1, anAxT1T0;
6566 gp_Dir aDT1x, aDT0x, aDT1T0;
6571 aPN0 = SMESH_TNodeXYZ( node );
6573 const SMESH_MeshEditor_PathPoint& aPP0 = aPPs[0];
6575 aDT0x= aPP0.Tangent();
6576 //cout<<"j = 0 PP: Pnt("<<aP0x.X()<<","<<aP0x.Y()<<","<<aP0x.Z()<<")"<<endl;
6578 for ( int j = 1; j < aNbTP; ++j ) {
6579 const SMESH_MeshEditor_PathPoint& aPP1 = aPPs[j];
6581 aDT1x = aPP1.Tangent();
6582 aAngle1x = aPP1.Angle();
6584 gp_Trsf aTrsf, aTrsfRot, aTrsfRotT1T0;
6586 gp_Vec aV01x( aP0x, aP1x );
6587 aTrsf.SetTranslation( aV01x );
6590 aV1x = aV0x.Transformed( aTrsf );
6591 aPN1 = aPN0.Transformed( aTrsf );
6593 // rotation 1 [ T1,T0 ]
6594 aAngleT1T0=-aDT1x.Angle( aDT0x );
6595 if (fabs(aAngleT1T0) > aTolAng) {
6597 anAxT1T0.SetLocation( aV1x );
6598 anAxT1T0.SetDirection( aDT1T0 );
6599 aTrsfRotT1T0.SetRotation( anAxT1T0, aAngleT1T0 );
6601 aPN1 = aPN1.Transformed( aTrsfRotT1T0 );
6605 if ( theHasAngles ) {
6606 anAx1.SetLocation( aV1x );
6607 anAx1.SetDirection( aDT1x );
6608 aTrsfRot.SetRotation( anAx1, aAngle1x );
6610 aPN1 = aPN1.Transformed( aTrsfRot );
6614 //MESSAGE("elem->IsQuadratic " << elem->IsQuadratic() << " " << elem->IsMediumNode(node));
6615 if( elem->IsQuadratic() && !elem->IsMediumNode(node) ) {
6616 // create additional node
6617 double x = ( aPN1.X() + aPN0.X() )/2.;
6618 double y = ( aPN1.Y() + aPN0.Y() )/2.;
6619 double z = ( aPN1.Z() + aPN0.Z() )/2.;
6620 const SMDS_MeshNode* newNode = aMesh->AddNode(x,y,z);
6621 myLastCreatedNodes.Append(newNode);
6622 srcNodes.Append( node );
6623 listNewNodes.push_back( newNode );
6625 const SMDS_MeshNode* newNode = aMesh->AddNode( aPN1.X(), aPN1.Y(), aPN1.Z() );
6626 myLastCreatedNodes.Append(newNode);
6627 srcNodes.Append( node );
6628 listNewNodes.push_back( newNode );
6638 // if current elem is quadratic and current node is not medium
6639 // we have to check - may be it is needed to insert additional nodes
6640 if( elem->IsQuadratic() && !elem->IsMediumNode(node) ) {
6641 list< const SMDS_MeshNode* > & listNewNodes = nIt->second;
6642 if(listNewNodes.size()==aNbTP-1) {
6643 vector<const SMDS_MeshNode*> aNodes(2*(aNbTP-1));
6644 gp_XYZ P(node->X(), node->Y(), node->Z());
6645 list< const SMDS_MeshNode* >::iterator it = listNewNodes.begin();
6647 for(i=0; i<aNbTP-1; i++) {
6648 const SMDS_MeshNode* N = *it;
6649 double x = ( N->X() + P.X() )/2.;
6650 double y = ( N->Y() + P.Y() )/2.;
6651 double z = ( N->Z() + P.Z() )/2.;
6652 const SMDS_MeshNode* newN = aMesh->AddNode(x,y,z);
6653 srcNodes.Append( node );
6654 myLastCreatedNodes.Append(newN);
6657 P = gp_XYZ(N->X(),N->Y(),N->Z());
6659 listNewNodes.clear();
6660 for(i=0; i<2*(aNbTP-1); i++) {
6661 listNewNodes.push_back(aNodes[i]);
6667 newNodesItVec.push_back( nIt );
6669 // make new elements
6670 //sweepElement( aMesh, elem, newNodesItVec, newElemsMap[elem],
6671 // newNodesItVec[0]->second.size(), myLastCreatedElems );
6672 sweepElement( elem, newNodesItVec, newElemsMap[elem], aNbTP-1, srcElems );
6676 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], aNbTP-1, srcElems );
6678 if ( theMakeGroups )
6679 generateGroups( srcNodes, srcElems, "extruded");
6685 //=======================================================================
6686 //function : LinearAngleVariation
6687 //purpose : auxilary for ExtrusionAlongTrack
6688 //=======================================================================
6689 void SMESH_MeshEditor::LinearAngleVariation(const int nbSteps,
6690 list<double>& Angles)
6692 int nbAngles = Angles.size();
6693 if( nbSteps > nbAngles ) {
6694 vector<double> theAngles(nbAngles);
6695 list<double>::iterator it = Angles.begin();
6697 for(; it!=Angles.end(); it++) {
6699 theAngles[i] = (*it);
6702 double rAn2St = double( nbAngles ) / double( nbSteps );
6703 double angPrev = 0, angle;
6704 for ( int iSt = 0; iSt < nbSteps; ++iSt ) {
6705 double angCur = rAn2St * ( iSt+1 );
6706 double angCurFloor = floor( angCur );
6707 double angPrevFloor = floor( angPrev );
6708 if ( angPrevFloor == angCurFloor )
6709 angle = rAn2St * theAngles[ int( angCurFloor ) ];
6711 int iP = int( angPrevFloor );
6712 double angPrevCeil = ceil(angPrev);
6713 angle = ( angPrevCeil - angPrev ) * theAngles[ iP ];
6715 int iC = int( angCurFloor );
6716 if ( iC < nbAngles )
6717 angle += ( angCur - angCurFloor ) * theAngles[ iC ];
6719 iP = int( angPrevCeil );
6721 angle += theAngles[ iC ];
6723 res.push_back(angle);
6728 for(; it!=res.end(); it++)
6729 Angles.push_back( *it );
6734 //================================================================================
6736 * \brief Move or copy theElements applying theTrsf to their nodes
6737 * \param theElems - elements to transform, if theElems is empty then apply to all mesh nodes
6738 * \param theTrsf - transformation to apply
6739 * \param theCopy - if true, create translated copies of theElems
6740 * \param theMakeGroups - if true and theCopy, create translated groups
6741 * \param theTargetMesh - mesh to copy translated elements into
6742 * \return SMESH_MeshEditor::PGroupIDs - list of ids of created groups
6744 //================================================================================
6746 SMESH_MeshEditor::PGroupIDs
6747 SMESH_MeshEditor::Transform (TIDSortedElemSet & theElems,
6748 const gp_Trsf& theTrsf,
6750 const bool theMakeGroups,
6751 SMESH_Mesh* theTargetMesh)
6753 myLastCreatedElems.Clear();
6754 myLastCreatedNodes.Clear();
6756 bool needReverse = false;
6757 string groupPostfix;
6758 switch ( theTrsf.Form() ) {
6760 MESSAGE("gp_PntMirror");
6762 groupPostfix = "mirrored";
6765 MESSAGE("gp_Ax1Mirror");
6766 groupPostfix = "mirrored";
6769 MESSAGE("gp_Ax2Mirror");
6771 groupPostfix = "mirrored";
6774 MESSAGE("gp_Rotation");
6775 groupPostfix = "rotated";
6777 case gp_Translation:
6778 MESSAGE("gp_Translation");
6779 groupPostfix = "translated";
6782 MESSAGE("gp_Scale");
6783 groupPostfix = "scaled";
6785 case gp_CompoundTrsf: // different scale by axis
6786 MESSAGE("gp_CompoundTrsf");
6787 groupPostfix = "scaled";
6791 needReverse = false;
6792 groupPostfix = "transformed";
6795 SMESHDS_Mesh* aTgtMesh = theTargetMesh ? theTargetMesh->GetMeshDS() : 0;
6796 SMESHDS_Mesh* aMesh = GetMeshDS();
6798 SMESH_MeshEditor targetMeshEditor( theTargetMesh );
6799 SMESH_MeshEditor* editor = theTargetMesh ? & targetMeshEditor : theCopy ? this : 0;
6800 SMESH_MeshEditor::ElemFeatures elemType;
6802 // map old node to new one
6803 TNodeNodeMap nodeMap;
6805 // elements sharing moved nodes; those of them which have all
6806 // nodes mirrored but are not in theElems are to be reversed
6807 TIDSortedElemSet inverseElemSet;
6809 // source elements for each generated one
6810 SMESH_SequenceOfElemPtr srcElems, srcNodes;
6812 // issue 021015: EDF 1578 SMESH: Free nodes are removed when translating a mesh
6813 TIDSortedElemSet orphanNode;
6815 if ( theElems.empty() ) // transform the whole mesh
6818 SMDS_ElemIteratorPtr eIt = aMesh->elementsIterator();
6819 while ( eIt->more() ) theElems.insert( eIt->next() );
6821 SMDS_NodeIteratorPtr nIt = aMesh->nodesIterator();
6822 while ( nIt->more() )
6824 const SMDS_MeshNode* node = nIt->next();
6825 if ( node->NbInverseElements() == 0)
6826 orphanNode.insert( node );
6830 // loop on elements to transform nodes : first orphan nodes then elems
6831 TIDSortedElemSet::iterator itElem;
6832 TIDSortedElemSet *elements[] = { &orphanNode, &theElems };
6833 for (int i=0; i<2; i++)
6834 for ( itElem = elements[i]->begin(); itElem != elements[i]->end(); itElem++ )
6836 const SMDS_MeshElement* elem = *itElem;
6840 // loop on elem nodes
6842 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6843 while ( itN->more() )
6845 const SMDS_MeshNode* node = cast2Node( itN->next() );
6846 // check if a node has been already transformed
6847 pair<TNodeNodeMap::iterator,bool> n2n_isnew =
6848 nodeMap.insert( make_pair ( node, node ));
6849 if ( !n2n_isnew.second )
6852 node->GetXYZ( coord );
6853 theTrsf.Transforms( coord[0], coord[1], coord[2] );
6854 if ( theTargetMesh ) {
6855 const SMDS_MeshNode * newNode = aTgtMesh->AddNode( coord[0], coord[1], coord[2] );
6856 n2n_isnew.first->second = newNode;
6857 myLastCreatedNodes.Append(newNode);
6858 srcNodes.Append( node );
6860 else if ( theCopy ) {
6861 const SMDS_MeshNode * newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
6862 n2n_isnew.first->second = newNode;
6863 myLastCreatedNodes.Append(newNode);
6864 srcNodes.Append( node );
6867 aMesh->MoveNode( node, coord[0], coord[1], coord[2] );
6868 // node position on shape becomes invalid
6869 const_cast< SMDS_MeshNode* > ( node )->SetPosition
6870 ( SMDS_SpacePosition::originSpacePosition() );
6873 // keep inverse elements
6874 if ( !theCopy && !theTargetMesh && needReverse ) {
6875 SMDS_ElemIteratorPtr invElemIt = node->GetInverseElementIterator();
6876 while ( invElemIt->more() ) {
6877 const SMDS_MeshElement* iel = invElemIt->next();
6878 inverseElemSet.insert( iel );
6882 } // loop on elems in { &orphanNode, &theElems };
6884 // either create new elements or reverse mirrored ones
6885 if ( !theCopy && !needReverse && !theTargetMesh )
6888 theElems.insert( inverseElemSet.begin(),inverseElemSet.end() );
6890 // Replicate or reverse elements
6892 std::vector<int> iForw;
6893 vector<const SMDS_MeshNode*> nodes;
6894 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
6896 const SMDS_MeshElement* elem = *itElem;
6897 if ( !elem ) continue;
6899 SMDSAbs_GeometryType geomType = elem->GetGeomType();
6900 int nbNodes = elem->NbNodes();
6901 if ( geomType == SMDSGeom_NONE ) continue; // node
6903 nodes.resize( nbNodes );
6905 if ( geomType == SMDSGeom_POLYHEDRA ) // ------------------ polyhedral volume
6907 const SMDS_VtkVolume* aPolyedre = dynamic_cast<const SMDS_VtkVolume*>( elem );
6911 bool allTransformed = true;
6912 int nbFaces = aPolyedre->NbFaces();
6913 for (int iface = 1; iface <= nbFaces && allTransformed; iface++)
6915 int nbFaceNodes = aPolyedre->NbFaceNodes(iface);
6916 for (int inode = 1; inode <= nbFaceNodes && allTransformed; inode++)
6918 const SMDS_MeshNode* node = aPolyedre->GetFaceNode(iface, inode);
6919 TNodeNodeMap::iterator nodeMapIt = nodeMap.find(node);
6920 if ( nodeMapIt == nodeMap.end() )
6921 allTransformed = false; // not all nodes transformed
6923 nodes.push_back((*nodeMapIt).second);
6925 if ( needReverse && allTransformed )
6926 std::reverse( nodes.end() - nbFaceNodes, nodes.end() );
6928 if ( !allTransformed )
6929 continue; // not all nodes transformed
6931 else // ----------------------- the rest element types
6933 while ( iForw.size() < nbNodes ) iForw.push_back( iForw.size() );
6934 const vector<int>& iRev = SMDS_MeshCell::reverseSmdsOrder( elem->GetEntityType(), nbNodes );
6935 const vector<int>& i = needReverse ? iRev : iForw;
6937 // find transformed nodes
6939 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6940 while ( itN->more() ) {
6941 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( itN->next() );
6942 TNodeNodeMap::iterator nodeMapIt = nodeMap.find( node );
6943 if ( nodeMapIt == nodeMap.end() )
6944 break; // not all nodes transformed
6945 nodes[ i [ iNode++ ]] = (*nodeMapIt).second;
6947 if ( iNode != nbNodes )
6948 continue; // not all nodes transformed
6952 // copy in this or a new mesh
6953 if ( editor->AddElement( nodes, elemType.Init( elem, /*basicOnly=*/false )))
6954 srcElems.Append( elem );
6957 // reverse element as it was reversed by transformation
6959 aMesh->ChangeElementNodes( elem, &nodes[0], nbNodes );
6962 } // loop on elements
6964 if ( editor && editor != this )
6965 myLastCreatedElems = editor->myLastCreatedElems;
6967 PGroupIDs newGroupIDs;
6969 if ( ( theMakeGroups && theCopy ) ||
6970 ( theMakeGroups && theTargetMesh ) )
6971 newGroupIDs = generateGroups( srcNodes, srcElems, groupPostfix, theTargetMesh, false );
6976 //=======================================================================
6978 * \brief Create groups of elements made during transformation
6979 * \param nodeGens - nodes making corresponding myLastCreatedNodes
6980 * \param elemGens - elements making corresponding myLastCreatedElems
6981 * \param postfix - to append to names of new groups
6982 * \param targetMesh - mesh to create groups in
6983 * \param topPresent - is there "top" elements that are created by sweeping
6985 //=======================================================================
6987 SMESH_MeshEditor::PGroupIDs
6988 SMESH_MeshEditor::generateGroups(const SMESH_SequenceOfElemPtr& nodeGens,
6989 const SMESH_SequenceOfElemPtr& elemGens,
6990 const std::string& postfix,
6991 SMESH_Mesh* targetMesh,
6992 const bool topPresent)
6994 PGroupIDs newGroupIDs( new list<int> );
6995 SMESH_Mesh* mesh = targetMesh ? targetMesh : GetMesh();
6997 // Sort existing groups by types and collect their names
6999 // containers to store an old group and generated new ones;
7000 // 1st new group is for result elems of different type than a source one;
7001 // 2nd new group is for same type result elems ("top" group at extrusion)
7003 using boost::make_tuple;
7004 typedef tuple< SMESHDS_GroupBase*, SMESHDS_Group*, SMESHDS_Group* > TOldNewGroup;
7005 vector< list< TOldNewGroup > > groupsByType( SMDSAbs_NbElementTypes );
7006 vector< TOldNewGroup* > orderedOldNewGroups; // in order of old groups
7008 set< string > groupNames;
7010 SMESH_Mesh::GroupIteratorPtr groupIt = GetMesh()->GetGroups();
7011 if ( !groupIt->more() ) return newGroupIDs;
7013 int newGroupID = mesh->GetGroupIds().back()+1;
7014 while ( groupIt->more() )
7016 SMESH_Group * group = groupIt->next();
7017 if ( !group ) continue;
7018 SMESHDS_GroupBase* groupDS = group->GetGroupDS();
7019 if ( !groupDS || groupDS->IsEmpty() ) continue;
7020 groupNames.insert ( group->GetName() );
7021 groupDS->SetStoreName( group->GetName() );
7022 const SMDSAbs_ElementType type = groupDS->GetType();
7023 SMESHDS_Group* newGroup = new SMESHDS_Group( newGroupID++, mesh->GetMeshDS(), type );
7024 SMESHDS_Group* newTopGroup = new SMESHDS_Group( newGroupID++, mesh->GetMeshDS(), type );
7025 groupsByType[ type ].push_back( make_tuple( groupDS, newGroup, newTopGroup ));
7026 orderedOldNewGroups.push_back( & groupsByType[ type ].back() );
7029 // Loop on nodes and elements to add them in new groups
7031 vector< const SMDS_MeshElement* > resultElems;
7032 for ( int isNodes = 0; isNodes < 2; ++isNodes )
7034 const SMESH_SequenceOfElemPtr& gens = isNodes ? nodeGens : elemGens;
7035 const SMESH_SequenceOfElemPtr& elems = isNodes ? myLastCreatedNodes : myLastCreatedElems;
7036 if ( gens.Length() != elems.Length() )
7037 throw SALOME_Exception("SMESH_MeshEditor::generateGroups(): invalid args");
7039 // loop on created elements
7040 for (int iElem = 1; iElem <= elems.Length(); ++iElem )
7042 const SMDS_MeshElement* sourceElem = gens( iElem );
7043 if ( !sourceElem ) {
7044 MESSAGE("generateGroups(): NULL source element");
7047 list< TOldNewGroup > & groupsOldNew = groupsByType[ sourceElem->GetType() ];
7048 if ( groupsOldNew.empty() ) { // no groups of this type at all
7049 while ( iElem < gens.Length() && gens( iElem+1 ) == sourceElem )
7050 ++iElem; // skip all elements made by sourceElem
7053 // collect all elements made by the iElem-th sourceElem
7054 resultElems.clear();
7055 if ( const SMDS_MeshElement* resElem = elems( iElem ))
7056 if ( resElem != sourceElem )
7057 resultElems.push_back( resElem );
7058 while ( iElem < gens.Length() && gens( iElem+1 ) == sourceElem )
7059 if ( const SMDS_MeshElement* resElem = elems( ++iElem ))
7060 if ( resElem != sourceElem )
7061 resultElems.push_back( resElem );
7063 const SMDS_MeshElement* topElem = 0;
7064 if ( isNodes ) // there must be a top element
7066 topElem = resultElems.back();
7067 resultElems.pop_back();
7071 vector< const SMDS_MeshElement* >::reverse_iterator resElemIt = resultElems.rbegin();
7072 for ( ; resElemIt != resultElems.rend() ; ++resElemIt )
7073 if ( (*resElemIt)->GetType() == sourceElem->GetType() )
7075 topElem = *resElemIt;
7076 *resElemIt = 0; // erase *resElemIt
7080 // add resultElems to groups originted from ones the sourceElem belongs to
7081 list< TOldNewGroup >::iterator gOldNew, gLast = groupsOldNew.end();
7082 for ( gOldNew = groupsOldNew.begin(); gOldNew != gLast; ++gOldNew )
7084 SMESHDS_GroupBase* oldGroup = gOldNew->get<0>();
7085 if ( oldGroup->Contains( sourceElem )) // sourceElem is in oldGroup
7087 // fill in a new group
7088 SMDS_MeshGroup & newGroup = gOldNew->get<1>()->SMDSGroup();
7089 vector< const SMDS_MeshElement* >::iterator resLast = resultElems.end(), resElemIt;
7090 for ( resElemIt = resultElems.begin(); resElemIt != resLast; ++resElemIt )
7092 newGroup.Add( *resElemIt );
7094 // fill a "top" group
7097 SMDS_MeshGroup & newTopGroup = gOldNew->get<2>()->SMDSGroup();
7098 newTopGroup.Add( topElem );
7102 } // loop on created elements
7103 }// loop on nodes and elements
7105 // Create new SMESH_Groups from SMESHDS_Groups and remove empty SMESHDS_Groups
7107 list<int> topGrouIds;
7108 for ( size_t i = 0; i < orderedOldNewGroups.size(); ++i )
7110 SMESHDS_GroupBase* oldGroupDS = orderedOldNewGroups[i]->get<0>();
7111 SMESHDS_Group* newGroups[2] = { orderedOldNewGroups[i]->get<1>(),
7112 orderedOldNewGroups[i]->get<2>() };
7113 for ( int is2nd = 0; is2nd < 2; ++is2nd )
7115 SMESHDS_Group* newGroupDS = newGroups[ is2nd ];
7116 if ( newGroupDS->IsEmpty() )
7118 mesh->GetMeshDS()->RemoveGroup( newGroupDS );
7123 newGroupDS->SetType( newGroupDS->GetElements()->next()->GetType() );
7126 const bool isTop = ( topPresent &&
7127 newGroupDS->GetType() == oldGroupDS->GetType() &&
7130 string name = oldGroupDS->GetStoreName();
7131 { // remove trailing whitespaces (issue 22599)
7132 size_t size = name.size();
7133 while ( size > 1 && isspace( name[ size-1 ]))
7135 if ( size != name.size() )
7137 name.resize( size );
7138 oldGroupDS->SetStoreName( name.c_str() );
7141 if ( !targetMesh ) {
7142 string suffix = ( isTop ? "top": postfix.c_str() );
7146 while ( !groupNames.insert( name ).second ) // name exists
7147 name = SMESH_Comment( oldGroupDS->GetStoreName() ) << "_" << suffix << "_" << nb++;
7152 newGroupDS->SetStoreName( name.c_str() );
7154 // make a SMESH_Groups
7155 mesh->AddGroup( newGroupDS );
7157 topGrouIds.push_back( newGroupDS->GetID() );
7159 newGroupIDs->push_back( newGroupDS->GetID() );
7163 newGroupIDs->splice( newGroupIDs->end(), topGrouIds );
7168 //================================================================================
7170 * * \brief Return list of group of nodes close to each other within theTolerance
7171 * * Search among theNodes or in the whole mesh if theNodes is empty using
7172 * * an Octree algorithm
7173 * \param [in,out] theNodes - the nodes to treat
7174 * \param [in] theTolerance - the tolerance
7175 * \param [out] theGroupsOfNodes - the result groups of coincident nodes
7176 * \param [in] theSeparateCornersAndMedium - if \c true, in quadratic mesh puts
7177 * corner and medium nodes in separate groups
7179 //================================================================================
7181 void SMESH_MeshEditor::FindCoincidentNodes (TIDSortedNodeSet & theNodes,
7182 const double theTolerance,
7183 TListOfListOfNodes & theGroupsOfNodes,
7184 bool theSeparateCornersAndMedium)
7186 myLastCreatedElems.Clear();
7187 myLastCreatedNodes.Clear();
7189 if ( myMesh->NbEdges ( ORDER_QUADRATIC ) +
7190 myMesh->NbFaces ( ORDER_QUADRATIC ) +
7191 myMesh->NbVolumes( ORDER_QUADRATIC ) == 0 )
7192 theSeparateCornersAndMedium = false;
7194 TIDSortedNodeSet& corners = theNodes;
7195 TIDSortedNodeSet medium;
7197 if ( theNodes.empty() ) // get all nodes in the mesh
7199 TIDSortedNodeSet* nodes[2] = { &corners, &medium };
7200 SMDS_NodeIteratorPtr nIt = GetMeshDS()->nodesIterator(/*idInceasingOrder=*/true);
7201 if ( theSeparateCornersAndMedium )
7202 while ( nIt->more() )
7204 const SMDS_MeshNode* n = nIt->next();
7205 TIDSortedNodeSet* & nodeSet = nodes[ SMESH_MesherHelper::IsMedium( n )];
7206 nodeSet->insert( nodeSet->end(), n );
7209 while ( nIt->more() )
7210 theNodes.insert( theNodes.end(),nIt->next() );
7212 else if ( theSeparateCornersAndMedium ) // separate corners from medium nodes
7214 TIDSortedNodeSet::iterator nIt = corners.begin();
7215 while ( nIt != corners.end() )
7216 if ( SMESH_MesherHelper::IsMedium( *nIt ))
7218 medium.insert( medium.end(), *nIt );
7219 corners.erase( nIt++ );
7227 if ( !corners.empty() )
7228 SMESH_OctreeNode::FindCoincidentNodes ( corners, &theGroupsOfNodes, theTolerance );
7229 if ( !medium.empty() )
7230 SMESH_OctreeNode::FindCoincidentNodes ( medium, &theGroupsOfNodes, theTolerance );
7233 //=======================================================================
7234 //function : SimplifyFace
7235 //purpose : split a chain of nodes into several closed chains
7236 //=======================================================================
7238 int SMESH_MeshEditor::SimplifyFace (const vector<const SMDS_MeshNode *>& faceNodes,
7239 vector<const SMDS_MeshNode *>& poly_nodes,
7240 vector<int>& quantities) const
7242 int nbNodes = faceNodes.size();
7247 set<const SMDS_MeshNode*> nodeSet;
7249 // get simple seq of nodes
7250 vector<const SMDS_MeshNode*> simpleNodes( nbNodes );
7253 simpleNodes[iSimple++] = faceNodes[0];
7254 for (int iCur = 1; iCur < nbNodes; iCur++) {
7255 if (faceNodes[iCur] != simpleNodes[iSimple - 1]) {
7256 simpleNodes[iSimple++] = faceNodes[iCur];
7257 nodeSet.insert( faceNodes[iCur] );
7260 int nbUnique = nodeSet.size();
7261 int nbSimple = iSimple;
7262 if (simpleNodes[nbSimple - 1] == simpleNodes[0]) {
7272 bool foundLoop = (nbSimple > nbUnique);
7275 set<const SMDS_MeshNode*> loopSet;
7276 for (iSimple = 0; iSimple < nbSimple && !foundLoop; iSimple++) {
7277 const SMDS_MeshNode* n = simpleNodes[iSimple];
7278 if (!loopSet.insert( n ).second) {
7282 int iC = 0, curLast = iSimple;
7283 for (; iC < curLast; iC++) {
7284 if (simpleNodes[iC] == n) break;
7286 int loopLen = curLast - iC;
7288 // create sub-element
7290 quantities.push_back(loopLen);
7291 for (; iC < curLast; iC++) {
7292 poly_nodes.push_back(simpleNodes[iC]);
7295 // shift the rest nodes (place from the first loop position)
7296 for (iC = curLast + 1; iC < nbSimple; iC++) {
7297 simpleNodes[iC - loopLen] = simpleNodes[iC];
7299 nbSimple -= loopLen;
7302 } // for (iSimple = 0; iSimple < nbSimple; iSimple++)
7303 } // while (foundLoop)
7307 quantities.push_back(iSimple);
7308 for (int i = 0; i < iSimple; i++)
7309 poly_nodes.push_back(simpleNodes[i]);
7315 //=======================================================================
7316 //function : MergeNodes
7317 //purpose : In each group, the cdr of nodes are substituted by the first one
7319 //=======================================================================
7321 void SMESH_MeshEditor::MergeNodes (TListOfListOfNodes & theGroupsOfNodes)
7323 MESSAGE("MergeNodes");
7324 myLastCreatedElems.Clear();
7325 myLastCreatedNodes.Clear();
7327 SMESHDS_Mesh* aMesh = GetMeshDS();
7329 TNodeNodeMap nodeNodeMap; // node to replace - new node
7330 set<const SMDS_MeshElement*> elems; // all elements with changed nodes
7331 list< int > rmElemIds, rmNodeIds;
7333 // Fill nodeNodeMap and elems
7335 TListOfListOfNodes::iterator grIt = theGroupsOfNodes.begin();
7336 for ( ; grIt != theGroupsOfNodes.end(); grIt++ )
7338 list<const SMDS_MeshNode*>& nodes = *grIt;
7339 list<const SMDS_MeshNode*>::iterator nIt = nodes.begin();
7340 const SMDS_MeshNode* nToKeep = *nIt;
7341 for ( ++nIt; nIt != nodes.end(); nIt++ )
7343 const SMDS_MeshNode* nToRemove = *nIt;
7344 nodeNodeMap.insert( make_pair( nToRemove, nToKeep ));
7345 if ( nToRemove != nToKeep )
7347 rmNodeIds.push_back( nToRemove->GetID() );
7348 AddToSameGroups( nToKeep, nToRemove, aMesh );
7349 // set _alwaysComputed to a sub-mesh of VERTEX to enable mesh computing
7350 // after MergeNodes() w/o creating node in place of merged ones.
7351 const SMDS_PositionPtr& pos = nToRemove->GetPosition();
7352 if ( pos && pos->GetTypeOfPosition() == SMDS_TOP_VERTEX )
7353 if ( SMESH_subMesh* sm = myMesh->GetSubMeshContaining( nToRemove->getshapeId() ))
7354 sm->SetIsAlwaysComputed( true );
7356 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
7357 while ( invElemIt->more() ) {
7358 const SMDS_MeshElement* elem = invElemIt->next();
7363 // Change element nodes or remove an element
7365 set<const SMDS_MeshNode*> nodeSet;
7366 vector< const SMDS_MeshNode*> curNodes, uniqueNodes;
7368 ElemFeatures elemType;
7370 set<const SMDS_MeshElement*>::iterator eIt = elems.begin();
7371 for ( ; eIt != elems.end(); eIt++ )
7373 const SMDS_MeshElement* elem = *eIt;
7374 const int nbNodes = elem->NbNodes();
7375 const int aShapeId = FindShape( elem );
7378 curNodes.resize( nbNodes );
7379 uniqueNodes.resize( nbNodes );
7380 iRepl.resize( nbNodes );
7381 int iUnique = 0, iCur = 0, nbRepl = 0;
7383 // get new seq of nodes
7384 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
7385 while ( itN->more() )
7387 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( itN->next() );
7389 TNodeNodeMap::iterator nnIt = nodeNodeMap.find( n );
7390 if ( nnIt != nodeNodeMap.end() ) { // n sticks
7392 { ////////// BUG 0020185: begin
7393 bool stopRecur = false;
7394 set<const SMDS_MeshNode*> nodesRecur;
7395 nodesRecur.insert(n);
7396 while (!stopRecur) {
7397 TNodeNodeMap::iterator nnIt_i = nodeNodeMap.find( n );
7398 if ( nnIt_i != nodeNodeMap.end() ) { // n sticks
7399 n = (*nnIt_i).second;
7400 if (!nodesRecur.insert(n).second) {
7401 // error: recursive dependancy
7408 } ////////// BUG 0020185: end
7410 curNodes[ iCur ] = n;
7411 bool isUnique = nodeSet.insert( n ).second;
7413 uniqueNodes[ iUnique++ ] = n;
7415 iRepl[ nbRepl++ ] = iCur;
7419 // Analyse element topology after replacement
7422 int nbUniqueNodes = nodeSet.size();
7423 if ( nbNodes != nbUniqueNodes ) // some nodes stick
7425 if (elem->IsPoly()) // Polygons and Polyhedral volumes
7427 if (elem->GetType() == SMDSAbs_Face) // Polygon
7429 elemType.Init( elem );
7430 const bool isQuad = elemType.myIsQuad;
7432 SMDS_MeshCell::applyInterlace // interlace medium and corner nodes
7433 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon, nbNodes ), curNodes );
7435 // a polygon can divide into several elements
7436 vector<const SMDS_MeshNode *> polygons_nodes;
7437 vector<int> quantities;
7438 int nbNew = SimplifyFace( curNodes, polygons_nodes, quantities );
7441 vector<const SMDS_MeshNode *> face_nodes;
7443 for (int iface = 0; iface < nbNew; iface++)
7445 int nbNewNodes = quantities[iface];
7446 face_nodes.assign( polygons_nodes.begin() + inode,
7447 polygons_nodes.begin() + inode + nbNewNodes );
7448 inode += nbNewNodes;
7449 if ( isQuad ) // check if a result elem is a valid quadratic polygon
7451 bool isValid = ( nbNewNodes % 2 == 0 );
7452 for ( int i = 0; i < nbNewNodes && isValid; ++i )
7453 isValid = ( elem->IsMediumNode( face_nodes[i]) == bool( i % 2 ));
7454 elemType.SetQuad( isValid );
7455 if ( isValid ) // put medium nodes after corners
7456 SMDS_MeshCell::applyInterlaceRev
7457 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon,
7458 nbNewNodes ), face_nodes );
7460 elemType.SetPoly(( nbNewNodes / ( elemType.myIsQuad + 1 ) > 4 ));
7462 SMDS_MeshElement* newElem = AddElement( face_nodes, elemType );
7464 aMesh->SetMeshElementOnShape(newElem, aShapeId);
7467 rmElemIds.push_back(elem->GetID());
7471 else if (elem->GetType() == SMDSAbs_Volume) // Polyhedral volume
7473 if (nbUniqueNodes < 4) {
7474 rmElemIds.push_back(elem->GetID());
7477 // each face has to be analyzed in order to check volume validity
7478 const SMDS_VtkVolume* aPolyedre = dynamic_cast<const SMDS_VtkVolume*>( elem );
7481 int nbFaces = aPolyedre->NbFaces();
7483 vector<const SMDS_MeshNode *> poly_nodes;
7484 vector<int> quantities;
7486 for (int iface = 1; iface <= nbFaces; iface++) {
7487 int nbFaceNodes = aPolyedre->NbFaceNodes(iface);
7488 vector<const SMDS_MeshNode *> faceNodes (nbFaceNodes);
7490 for (int inode = 1; inode <= nbFaceNodes; inode++) {
7491 const SMDS_MeshNode * faceNode = aPolyedre->GetFaceNode(iface, inode);
7492 TNodeNodeMap::iterator nnIt = nodeNodeMap.find(faceNode);
7493 if (nnIt != nodeNodeMap.end()) { // faceNode sticks
7494 faceNode = (*nnIt).second;
7496 faceNodes[inode - 1] = faceNode;
7499 SimplifyFace(faceNodes, poly_nodes, quantities);
7502 if (quantities.size() > 3) {
7503 // to be done: remove coincident faces
7506 if (quantities.size() > 3)
7508 const SMDS_MeshElement* newElem =
7509 aMesh->AddPolyhedralVolume(poly_nodes, quantities);
7510 myLastCreatedElems.Append(newElem);
7511 if ( aShapeId && newElem )
7512 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7513 rmElemIds.push_back(elem->GetID());
7517 rmElemIds.push_back(elem->GetID());
7528 // TODO not all the possible cases are solved. Find something more generic?
7529 switch ( nbNodes ) {
7530 case 2: ///////////////////////////////////// EDGE
7531 isOk = false; break;
7532 case 3: ///////////////////////////////////// TRIANGLE
7533 isOk = false; break;
7535 if ( elem->GetType() == SMDSAbs_Volume ) // TETRAHEDRON
7537 else { //////////////////////////////////// QUADRANGLE
7538 if ( nbUniqueNodes < 3 )
7540 else if ( nbRepl == 2 && iRepl[ 1 ] - iRepl[ 0 ] == 2 )
7541 isOk = false; // opposite nodes stick
7542 //MESSAGE("isOk " << isOk);
7545 case 6: ///////////////////////////////////// PENTAHEDRON
7546 if ( nbUniqueNodes == 4 ) {
7547 // ---------------------------------> tetrahedron
7549 iRepl[ 0 ] > 2 && iRepl[ 1 ] > 2 && iRepl[ 2 ] > 2 ) {
7550 // all top nodes stick: reverse a bottom
7551 uniqueNodes[ 0 ] = curNodes [ 1 ];
7552 uniqueNodes[ 1 ] = curNodes [ 0 ];
7554 else if (nbRepl == 3 &&
7555 iRepl[ 0 ] < 3 && iRepl[ 1 ] < 3 && iRepl[ 2 ] < 3 ) {
7556 // all bottom nodes stick: set a top before
7557 uniqueNodes[ 3 ] = uniqueNodes [ 0 ];
7558 uniqueNodes[ 0 ] = curNodes [ 3 ];
7559 uniqueNodes[ 1 ] = curNodes [ 4 ];
7560 uniqueNodes[ 2 ] = curNodes [ 5 ];
7562 else if (nbRepl == 4 &&
7563 iRepl[ 2 ] - iRepl [ 0 ] == 3 && iRepl[ 3 ] - iRepl [ 1 ] == 3 ) {
7564 // a lateral face turns into a line: reverse a bottom
7565 uniqueNodes[ 0 ] = curNodes [ 1 ];
7566 uniqueNodes[ 1 ] = curNodes [ 0 ];
7571 else if ( nbUniqueNodes == 5 ) {
7572 // PENTAHEDRON --------------------> 2 tetrahedrons
7573 if ( nbRepl == 2 && iRepl[ 1 ] - iRepl [ 0 ] == 3 ) {
7574 // a bottom node sticks with a linked top one
7576 SMDS_MeshElement* newElem =
7577 aMesh->AddVolume(curNodes[ 3 ],
7580 curNodes[ iRepl[ 0 ] == 2 ? 1 : 2 ]);
7581 myLastCreatedElems.Append(newElem);
7583 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7584 // 2. : reverse a bottom
7585 uniqueNodes[ 0 ] = curNodes [ 1 ];
7586 uniqueNodes[ 1 ] = curNodes [ 0 ];
7596 if(elem->IsQuadratic()) { // Quadratic quadrangle
7608 MESSAGE("nbRepl=2: " << iRepl[0] << " " << iRepl[1]);
7611 MESSAGE("nbRepl=3: " << iRepl[0] << " " << iRepl[1] << " " << iRepl[2]);
7613 if( iRepl[0]==0 && iRepl[1]==1 && iRepl[2]==4 ) {
7614 uniqueNodes[0] = curNodes[0];
7615 uniqueNodes[1] = curNodes[2];
7616 uniqueNodes[2] = curNodes[3];
7617 uniqueNodes[3] = curNodes[5];
7618 uniqueNodes[4] = curNodes[6];
7619 uniqueNodes[5] = curNodes[7];
7622 if( iRepl[0]==0 && iRepl[1]==3 && iRepl[2]==7 ) {
7623 uniqueNodes[0] = curNodes[0];
7624 uniqueNodes[1] = curNodes[1];
7625 uniqueNodes[2] = curNodes[2];
7626 uniqueNodes[3] = curNodes[4];
7627 uniqueNodes[4] = curNodes[5];
7628 uniqueNodes[5] = curNodes[6];
7631 if( iRepl[0]==0 && iRepl[1]==4 && iRepl[2]==7 ) {
7632 uniqueNodes[0] = curNodes[1];
7633 uniqueNodes[1] = curNodes[2];
7634 uniqueNodes[2] = curNodes[3];
7635 uniqueNodes[3] = curNodes[5];
7636 uniqueNodes[4] = curNodes[6];
7637 uniqueNodes[5] = curNodes[0];
7640 if( iRepl[0]==1 && iRepl[1]==2 && iRepl[2]==5 ) {
7641 uniqueNodes[0] = curNodes[0];
7642 uniqueNodes[1] = curNodes[1];
7643 uniqueNodes[2] = curNodes[3];
7644 uniqueNodes[3] = curNodes[4];
7645 uniqueNodes[4] = curNodes[6];
7646 uniqueNodes[5] = curNodes[7];
7649 if( iRepl[0]==1 && iRepl[1]==4 && iRepl[2]==5 ) {
7650 uniqueNodes[0] = curNodes[0];
7651 uniqueNodes[1] = curNodes[2];
7652 uniqueNodes[2] = curNodes[3];
7653 uniqueNodes[3] = curNodes[1];
7654 uniqueNodes[4] = curNodes[6];
7655 uniqueNodes[5] = curNodes[7];
7658 if( iRepl[0]==2 && iRepl[1]==3 && iRepl[2]==6 ) {
7659 uniqueNodes[0] = curNodes[0];
7660 uniqueNodes[1] = curNodes[1];
7661 uniqueNodes[2] = curNodes[2];
7662 uniqueNodes[3] = curNodes[4];
7663 uniqueNodes[4] = curNodes[5];
7664 uniqueNodes[5] = curNodes[7];
7667 if( iRepl[0]==2 && iRepl[1]==5 && iRepl[2]==6 ) {
7668 uniqueNodes[0] = curNodes[0];
7669 uniqueNodes[1] = curNodes[1];
7670 uniqueNodes[2] = curNodes[3];
7671 uniqueNodes[3] = curNodes[4];
7672 uniqueNodes[4] = curNodes[2];
7673 uniqueNodes[5] = curNodes[7];
7676 if( iRepl[0]==3 && iRepl[1]==6 && iRepl[2]==7 ) {
7677 uniqueNodes[0] = curNodes[0];
7678 uniqueNodes[1] = curNodes[1];
7679 uniqueNodes[2] = curNodes[2];
7680 uniqueNodes[3] = curNodes[4];
7681 uniqueNodes[4] = curNodes[5];
7682 uniqueNodes[5] = curNodes[3];
7687 MESSAGE("nbRepl=4: " << iRepl[0] << " " << iRepl[1] << " " << iRepl[2] << " " << iRepl[3]);
7690 MESSAGE("nbRepl=5: " << iRepl[0] << " " << iRepl[1] << " " << iRepl[2] << " " << iRepl[3] << " " << iRepl[4]);
7694 //////////////////////////////////// HEXAHEDRON
7696 SMDS_VolumeTool hexa (elem);
7697 hexa.SetExternalNormal();
7698 if ( nbUniqueNodes == 4 && nbRepl == 4 ) {
7699 //////////////////////// HEX ---> 1 tetrahedron
7700 for ( int iFace = 0; iFace < 6; iFace++ ) {
7701 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7702 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7703 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7704 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7705 // one face turns into a point ...
7706 int iOppFace = hexa.GetOppFaceIndex( iFace );
7707 ind = hexa.GetFaceNodesIndices( iOppFace );
7709 for ( iCur = 0; iCur < 4 && nbStick < 2; iCur++ ) {
7710 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7713 if ( nbStick == 1 ) {
7714 // ... and the opposite one - into a triangle.
7716 ind = hexa.GetFaceNodesIndices( iFace );
7717 uniqueNodes[ 3 ] = curNodes[ind[ 0 ]];
7724 else if ( nbUniqueNodes == 6 && nbRepl == 2 ) {
7725 //////////////////////// HEX ---> 1 prism
7726 int nbTria = 0, iTria[3];
7727 const int *ind; // indices of face nodes
7728 // look for triangular faces
7729 for ( int iFace = 0; iFace < 6 && nbTria < 3; iFace++ ) {
7730 ind = hexa.GetFaceNodesIndices( iFace );
7731 TIDSortedNodeSet faceNodes;
7732 for ( iCur = 0; iCur < 4; iCur++ )
7733 faceNodes.insert( curNodes[ind[iCur]] );
7734 if ( faceNodes.size() == 3 )
7735 iTria[ nbTria++ ] = iFace;
7737 // check if triangles are opposite
7738 if ( nbTria == 2 && iTria[0] == hexa.GetOppFaceIndex( iTria[1] ))
7741 // set nodes of the bottom triangle
7742 ind = hexa.GetFaceNodesIndices( iTria[ 0 ]);
7744 for ( iCur = 0; iCur < 4; iCur++ )
7745 if ( ind[iCur] != iRepl[0] && ind[iCur] != iRepl[1])
7746 indB.push_back( ind[iCur] );
7747 if ( !hexa.IsForward() )
7748 std::swap( indB[0], indB[2] );
7749 for ( iCur = 0; iCur < 3; iCur++ )
7750 uniqueNodes[ iCur ] = curNodes[indB[iCur]];
7751 // set nodes of the top triangle
7752 const int *indT = hexa.GetFaceNodesIndices( iTria[ 1 ]);
7753 for ( iCur = 0; iCur < 3; ++iCur )
7754 for ( int j = 0; j < 4; ++j )
7755 if ( hexa.IsLinked( indB[ iCur ], indT[ j ] ))
7757 uniqueNodes[ iCur + 3 ] = curNodes[ indT[ j ]];
7763 else if (nbUniqueNodes == 5 && nbRepl == 4 ) {
7764 //////////////////// HEXAHEDRON ---> 2 tetrahedrons
7765 for ( int iFace = 0; iFace < 6; iFace++ ) {
7766 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7767 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7768 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7769 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7770 // one face turns into a point ...
7771 int iOppFace = hexa.GetOppFaceIndex( iFace );
7772 ind = hexa.GetFaceNodesIndices( iOppFace );
7774 iUnique = 2; // reverse a tetrahedron 1 bottom
7775 for ( iCur = 0; iCur < 4 && nbStick == 0; iCur++ ) {
7776 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7778 else if ( iUnique >= 0 )
7779 uniqueNodes[ iUnique-- ] = curNodes[ind[ iCur ]];
7781 if ( nbStick == 0 ) {
7782 // ... and the opposite one is a quadrangle
7784 const int* indTop = hexa.GetFaceNodesIndices( iFace );
7785 uniqueNodes[ 3 ] = curNodes[indTop[ 0 ]];
7788 SMDS_MeshElement* newElem =
7789 aMesh->AddVolume(curNodes[ind[ 0 ]],
7792 curNodes[indTop[ 0 ]]);
7793 myLastCreatedElems.Append(newElem);
7795 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7802 else if ( nbUniqueNodes == 6 && nbRepl == 4 ) {
7803 ////////////////// HEXAHEDRON ---> 2 tetrahedrons or 1 prism
7804 // find indices of quad and tri faces
7805 int iQuadFace[ 6 ], iTriFace[ 6 ], nbQuad = 0, nbTri = 0, iFace;
7806 for ( iFace = 0; iFace < 6; iFace++ ) {
7807 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7809 for ( iCur = 0; iCur < 4; iCur++ )
7810 nodeSet.insert( curNodes[ind[ iCur ]] );
7811 nbUniqueNodes = nodeSet.size();
7812 if ( nbUniqueNodes == 3 )
7813 iTriFace[ nbTri++ ] = iFace;
7814 else if ( nbUniqueNodes == 4 )
7815 iQuadFace[ nbQuad++ ] = iFace;
7817 if (nbQuad == 2 && nbTri == 4 &&
7818 hexa.GetOppFaceIndex( iQuadFace[ 0 ] ) == iQuadFace[ 1 ]) {
7819 // 2 opposite quadrangles stuck with a diagonal;
7820 // sample groups of merged indices: (0-4)(2-6)
7821 // --------------------------------------------> 2 tetrahedrons
7822 const int *ind1 = hexa.GetFaceNodesIndices( iQuadFace[ 0 ]); // indices of quad1 nodes
7823 const int *ind2 = hexa.GetFaceNodesIndices( iQuadFace[ 1 ]);
7824 int i0, i1d, i2, i3d, i0t, i2t; // d-daigonal, t-top
7825 if (curNodes[ind1[ 0 ]] == curNodes[ind2[ 0 ]] &&
7826 curNodes[ind1[ 2 ]] == curNodes[ind2[ 2 ]]) {
7827 // stuck with 0-2 diagonal
7835 else if (curNodes[ind1[ 1 ]] == curNodes[ind2[ 3 ]] &&
7836 curNodes[ind1[ 3 ]] == curNodes[ind2[ 1 ]]) {
7837 // stuck with 1-3 diagonal
7849 uniqueNodes[ 0 ] = curNodes [ i0 ];
7850 uniqueNodes[ 1 ] = curNodes [ i1d ];
7851 uniqueNodes[ 2 ] = curNodes [ i3d ];
7852 uniqueNodes[ 3 ] = curNodes [ i0t ];
7855 SMDS_MeshElement* newElem = aMesh->AddVolume(curNodes[ i1d ],
7859 myLastCreatedElems.Append(newElem);
7861 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7864 else if (( nbTri == 2 && nbQuad == 3 ) || // merged (0-4)(1-5)
7865 ( nbTri == 4 && nbQuad == 2 )) { // merged (7-4)(1-5)
7866 // --------------------------------------------> prism
7867 // find 2 opposite triangles
7869 for ( iFace = 0; iFace + 1 < nbTri; iFace++ ) {
7870 if ( hexa.GetOppFaceIndex( iTriFace[ iFace ] ) == iTriFace[ iFace + 1 ]) {
7871 // find indices of kept and replaced nodes
7872 // and fill unique nodes of 2 opposite triangles
7873 const int *ind1 = hexa.GetFaceNodesIndices( iTriFace[ iFace ]);
7874 const int *ind2 = hexa.GetFaceNodesIndices( iTriFace[ iFace + 1 ]);
7875 const SMDS_MeshNode** hexanodes = hexa.GetNodes();
7876 // fill unique nodes
7879 for ( iCur = 0; iCur < 4 && isOk; iCur++ ) {
7880 const SMDS_MeshNode* n = curNodes[ind1[ iCur ]];
7881 const SMDS_MeshNode* nInit = hexanodes[ind1[ iCur ]];
7883 // iCur of a linked node of the opposite face (make normals co-directed):
7884 int iCurOpp = ( iCur == 1 || iCur == 3 ) ? 4 - iCur : iCur;
7885 // check that correspondent corners of triangles are linked
7886 if ( !hexa.IsLinked( ind1[ iCur ], ind2[ iCurOpp ] ))
7889 uniqueNodes[ iUnique ] = n;
7890 uniqueNodes[ iUnique + 3 ] = curNodes[ind2[ iCurOpp ]];
7899 } // if ( nbUniqueNodes == 6 && nbRepl == 4 )
7902 MESSAGE("MergeNodes() removes hexahedron "<< elem);
7909 } // switch ( nbNodes )
7911 } // if ( nbNodes != nbUniqueNodes ) // some nodes stick
7913 if ( isOk ) // the non-poly elem remains valid after sticking nodes
7915 if ( nbNodes != nbUniqueNodes )
7917 elemType.Init( elem ).SetID( elem->GetID() );
7919 SMESHDS_SubMesh * sm = aShapeId > 0 ? aMesh->MeshElements(aShapeId) : 0;
7920 aMesh->RemoveFreeElement(elem, sm, /*fromGroups=*/false);
7922 uniqueNodes.resize(nbUniqueNodes);
7923 SMDS_MeshElement* newElem = this->AddElement( uniqueNodes, elemType );
7924 if ( sm && newElem )
7925 sm->AddElement( newElem );
7926 if ( elem != newElem )
7927 ReplaceElemInGroups( elem, newElem, aMesh );
7931 aMesh->ChangeElementNodes( elem, & curNodes[0], nbNodes );
7935 // Remove invalid regular element or invalid polygon
7936 rmElemIds.push_back( elem->GetID() );
7939 } // loop on elements
7941 // Remove bad elements, then equal nodes (order important)
7943 Remove( rmElemIds, false );
7944 Remove( rmNodeIds, true );
7950 // ========================================================
7951 // class : SortableElement
7952 // purpose : allow sorting elements basing on their nodes
7953 // ========================================================
7954 class SortableElement : public set <const SMDS_MeshElement*>
7958 SortableElement( const SMDS_MeshElement* theElem )
7961 SMDS_ElemIteratorPtr nodeIt = theElem->nodesIterator();
7962 while ( nodeIt->more() )
7963 this->insert( nodeIt->next() );
7966 const SMDS_MeshElement* Get() const
7969 void Set(const SMDS_MeshElement* e) const
7974 mutable const SMDS_MeshElement* myElem;
7977 //=======================================================================
7978 //function : FindEqualElements
7979 //purpose : Return list of group of elements built on the same nodes.
7980 // Search among theElements or in the whole mesh if theElements is empty
7981 //=======================================================================
7983 void SMESH_MeshEditor::FindEqualElements(TIDSortedElemSet & theElements,
7984 TListOfListOfElementsID & theGroupsOfElementsID)
7986 myLastCreatedElems.Clear();
7987 myLastCreatedNodes.Clear();
7989 typedef map< SortableElement, int > TMapOfNodeSet;
7990 typedef list<int> TGroupOfElems;
7992 if ( theElements.empty() )
7993 { // get all elements in the mesh
7994 SMDS_ElemIteratorPtr eIt = GetMeshDS()->elementsIterator();
7995 while ( eIt->more() )
7996 theElements.insert( theElements.end(), eIt->next() );
7999 vector< TGroupOfElems > arrayOfGroups;
8000 TGroupOfElems groupOfElems;
8001 TMapOfNodeSet mapOfNodeSet;
8003 TIDSortedElemSet::iterator elemIt = theElements.begin();
8004 for ( int i = 0; elemIt != theElements.end(); ++elemIt )
8006 const SMDS_MeshElement* curElem = *elemIt;
8007 SortableElement SE(curElem);
8009 pair< TMapOfNodeSet::iterator, bool> pp = mapOfNodeSet.insert(make_pair(SE, i));
8010 if ( !pp.second ) { // one more coincident elem
8011 TMapOfNodeSet::iterator& itSE = pp.first;
8012 int ind = (*itSE).second;
8013 arrayOfGroups[ind].push_back( curElem->GetID() );
8016 arrayOfGroups.push_back( groupOfElems );
8017 arrayOfGroups.back().push_back( curElem->GetID() );
8022 groupOfElems.clear();
8023 vector< TGroupOfElems >::iterator groupIt = arrayOfGroups.begin();
8024 for ( ; groupIt != arrayOfGroups.end(); ++groupIt )
8026 if ( groupIt->size() > 1 ) {
8027 //groupOfElems.sort(); -- theElements is sorted already
8028 theGroupsOfElementsID.push_back( groupOfElems );
8029 theGroupsOfElementsID.back().splice( theGroupsOfElementsID.back().end(), *groupIt );
8034 //=======================================================================
8035 //function : MergeElements
8036 //purpose : In each given group, substitute all elements by the first one.
8037 //=======================================================================
8039 void SMESH_MeshEditor::MergeElements(TListOfListOfElementsID & theGroupsOfElementsID)
8041 myLastCreatedElems.Clear();
8042 myLastCreatedNodes.Clear();
8044 typedef list<int> TListOfIDs;
8045 TListOfIDs rmElemIds; // IDs of elems to remove
8047 SMESHDS_Mesh* aMesh = GetMeshDS();
8049 TListOfListOfElementsID::iterator groupsIt = theGroupsOfElementsID.begin();
8050 while ( groupsIt != theGroupsOfElementsID.end() ) {
8051 TListOfIDs& aGroupOfElemID = *groupsIt;
8052 aGroupOfElemID.sort();
8053 int elemIDToKeep = aGroupOfElemID.front();
8054 const SMDS_MeshElement* elemToKeep = aMesh->FindElement(elemIDToKeep);
8055 aGroupOfElemID.pop_front();
8056 TListOfIDs::iterator idIt = aGroupOfElemID.begin();
8057 while ( idIt != aGroupOfElemID.end() ) {
8058 int elemIDToRemove = *idIt;
8059 const SMDS_MeshElement* elemToRemove = aMesh->FindElement(elemIDToRemove);
8060 // add the kept element in groups of removed one (PAL15188)
8061 AddToSameGroups( elemToKeep, elemToRemove, aMesh );
8062 rmElemIds.push_back( elemIDToRemove );
8068 Remove( rmElemIds, false );
8071 //=======================================================================
8072 //function : MergeEqualElements
8073 //purpose : Remove all but one of elements built on the same nodes.
8074 //=======================================================================
8076 void SMESH_MeshEditor::MergeEqualElements()
8078 TIDSortedElemSet aMeshElements; /* empty input ==
8079 to merge equal elements in the whole mesh */
8080 TListOfListOfElementsID aGroupsOfElementsID;
8081 FindEqualElements(aMeshElements, aGroupsOfElementsID);
8082 MergeElements(aGroupsOfElementsID);
8085 //=======================================================================
8086 //function : findAdjacentFace
8088 //=======================================================================
8090 static const SMDS_MeshElement* findAdjacentFace(const SMDS_MeshNode* n1,
8091 const SMDS_MeshNode* n2,
8092 const SMDS_MeshElement* elem)
8094 TIDSortedElemSet elemSet, avoidSet;
8096 avoidSet.insert ( elem );
8097 return SMESH_MeshAlgos::FindFaceInSet( n1, n2, elemSet, avoidSet );
8100 //=======================================================================
8101 //function : findSegment
8102 //purpose : Return a mesh segment by two nodes one of which can be medium
8103 //=======================================================================
8105 static const SMDS_MeshElement* findSegment(const SMDS_MeshNode* n1,
8106 const SMDS_MeshNode* n2)
8108 SMDS_ElemIteratorPtr it = n1->GetInverseElementIterator( SMDSAbs_Edge );
8109 while ( it->more() )
8111 const SMDS_MeshElement* seg = it->next();
8112 if ( seg->GetNodeIndex( n2 ) >= 0 )
8118 //=======================================================================
8119 //function : FindFreeBorder
8121 //=======================================================================
8123 #define ControlFreeBorder SMESH::Controls::FreeEdges::IsFreeEdge
8125 bool SMESH_MeshEditor::FindFreeBorder (const SMDS_MeshNode* theFirstNode,
8126 const SMDS_MeshNode* theSecondNode,
8127 const SMDS_MeshNode* theLastNode,
8128 list< const SMDS_MeshNode* > & theNodes,
8129 list< const SMDS_MeshElement* >& theFaces)
8131 if ( !theFirstNode || !theSecondNode )
8133 // find border face between theFirstNode and theSecondNode
8134 const SMDS_MeshElement* curElem = findAdjacentFace( theFirstNode, theSecondNode, 0 );
8138 theFaces.push_back( curElem );
8139 theNodes.push_back( theFirstNode );
8140 theNodes.push_back( theSecondNode );
8142 const SMDS_MeshNode *nIgnore = theFirstNode, *nStart = theSecondNode;
8143 TIDSortedElemSet foundElems;
8144 bool needTheLast = ( theLastNode != 0 );
8146 while ( nStart != theLastNode ) {
8147 if ( nStart == theFirstNode )
8148 return !needTheLast;
8150 // find all free border faces sharing form nStart
8152 list< const SMDS_MeshElement* > curElemList;
8153 list< const SMDS_MeshNode* > nStartList;
8154 SMDS_ElemIteratorPtr invElemIt = nStart->GetInverseElementIterator(SMDSAbs_Face);
8155 while ( invElemIt->more() ) {
8156 const SMDS_MeshElement* e = invElemIt->next();
8157 if ( e == curElem || foundElems.insert( e ).second ) {
8159 int iNode = 0, nbNodes = e->NbNodes();
8160 vector<const SMDS_MeshNode*> nodes(nbNodes+1);
8162 if ( e->IsQuadratic() ) {
8163 const SMDS_VtkFace* F =
8164 dynamic_cast<const SMDS_VtkFace*>(e);
8165 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8166 // use special nodes iterator
8167 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8168 while( anIter->more() ) {
8169 nodes[ iNode++ ] = cast2Node(anIter->next());
8173 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
8174 while ( nIt->more() )
8175 nodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nIt->next() );
8177 nodes[ iNode ] = nodes[ 0 ];
8179 for ( iNode = 0; iNode < nbNodes; iNode++ )
8180 if (((nodes[ iNode ] == nStart && nodes[ iNode + 1] != nIgnore ) ||
8181 (nodes[ iNode + 1] == nStart && nodes[ iNode ] != nIgnore )) &&
8182 ControlFreeBorder( &nodes[ iNode ], e->GetID() ))
8184 nStartList.push_back( nodes[ iNode + ( nodes[ iNode ] == nStart ? 1 : 0 )]);
8185 curElemList.push_back( e );
8189 // analyse the found
8191 int nbNewBorders = curElemList.size();
8192 if ( nbNewBorders == 0 ) {
8193 // no free border furthermore
8194 return !needTheLast;
8196 else if ( nbNewBorders == 1 ) {
8197 // one more element found
8199 nStart = nStartList.front();
8200 curElem = curElemList.front();
8201 theFaces.push_back( curElem );
8202 theNodes.push_back( nStart );
8205 // several continuations found
8206 list< const SMDS_MeshElement* >::iterator curElemIt;
8207 list< const SMDS_MeshNode* >::iterator nStartIt;
8208 // check if one of them reached the last node
8209 if ( needTheLast ) {
8210 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8211 curElemIt!= curElemList.end();
8212 curElemIt++, nStartIt++ )
8213 if ( *nStartIt == theLastNode ) {
8214 theFaces.push_back( *curElemIt );
8215 theNodes.push_back( *nStartIt );
8219 // find the best free border by the continuations
8220 list<const SMDS_MeshNode*> contNodes[ 2 ], *cNL;
8221 list<const SMDS_MeshElement*> contFaces[ 2 ], *cFL;
8222 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8223 curElemIt!= curElemList.end();
8224 curElemIt++, nStartIt++ )
8226 cNL = & contNodes[ contNodes[0].empty() ? 0 : 1 ];
8227 cFL = & contFaces[ contFaces[0].empty() ? 0 : 1 ];
8228 // find one more free border
8229 if ( ! SMESH_MeshEditor::FindFreeBorder( nStart, *nStartIt, theLastNode, *cNL, *cFL )) {
8233 else if ( !contNodes[0].empty() && !contNodes[1].empty() ) {
8234 // choice: clear a worse one
8235 int iLongest = ( contNodes[0].size() < contNodes[1].size() ? 1 : 0 );
8236 int iWorse = ( needTheLast ? 1 - iLongest : iLongest );
8237 contNodes[ iWorse ].clear();
8238 contFaces[ iWorse ].clear();
8241 if ( contNodes[0].empty() && contNodes[1].empty() )
8244 // append the best free border
8245 cNL = & contNodes[ contNodes[0].empty() ? 1 : 0 ];
8246 cFL = & contFaces[ contFaces[0].empty() ? 1 : 0 ];
8247 theNodes.pop_back(); // remove nIgnore
8248 theNodes.pop_back(); // remove nStart
8249 theFaces.pop_back(); // remove curElem
8250 list< const SMDS_MeshNode* >::iterator nIt = cNL->begin();
8251 list< const SMDS_MeshElement* >::iterator fIt = cFL->begin();
8252 for ( ; nIt != cNL->end(); nIt++ ) theNodes.push_back( *nIt );
8253 for ( ; fIt != cFL->end(); fIt++ ) theFaces.push_back( *fIt );
8256 } // several continuations found
8257 } // while ( nStart != theLastNode )
8262 //=======================================================================
8263 //function : CheckFreeBorderNodes
8264 //purpose : Return true if the tree nodes are on a free border
8265 //=======================================================================
8267 bool SMESH_MeshEditor::CheckFreeBorderNodes(const SMDS_MeshNode* theNode1,
8268 const SMDS_MeshNode* theNode2,
8269 const SMDS_MeshNode* theNode3)
8271 list< const SMDS_MeshNode* > nodes;
8272 list< const SMDS_MeshElement* > faces;
8273 return FindFreeBorder( theNode1, theNode2, theNode3, nodes, faces);
8276 //=======================================================================
8277 //function : SewFreeBorder
8279 //warning : for border-to-side sewing theSideSecondNode is considered as
8280 // the last side node and theSideThirdNode is not used
8281 //=======================================================================
8283 SMESH_MeshEditor::Sew_Error
8284 SMESH_MeshEditor::SewFreeBorder (const SMDS_MeshNode* theBordFirstNode,
8285 const SMDS_MeshNode* theBordSecondNode,
8286 const SMDS_MeshNode* theBordLastNode,
8287 const SMDS_MeshNode* theSideFirstNode,
8288 const SMDS_MeshNode* theSideSecondNode,
8289 const SMDS_MeshNode* theSideThirdNode,
8290 const bool theSideIsFreeBorder,
8291 const bool toCreatePolygons,
8292 const bool toCreatePolyedrs)
8294 myLastCreatedElems.Clear();
8295 myLastCreatedNodes.Clear();
8297 MESSAGE("::SewFreeBorder()");
8298 Sew_Error aResult = SEW_OK;
8300 // ====================================
8301 // find side nodes and elements
8302 // ====================================
8304 list< const SMDS_MeshNode* > nSide[ 2 ];
8305 list< const SMDS_MeshElement* > eSide[ 2 ];
8306 list< const SMDS_MeshNode* >::iterator nIt[ 2 ];
8307 list< const SMDS_MeshElement* >::iterator eIt[ 2 ];
8311 if (!FindFreeBorder(theBordFirstNode,theBordSecondNode,theBordLastNode,
8312 nSide[0], eSide[0])) {
8313 MESSAGE(" Free Border 1 not found " );
8314 aResult = SEW_BORDER1_NOT_FOUND;
8316 if (theSideIsFreeBorder) {
8319 if (!FindFreeBorder(theSideFirstNode, theSideSecondNode, theSideThirdNode,
8320 nSide[1], eSide[1])) {
8321 MESSAGE(" Free Border 2 not found " );
8322 aResult = ( aResult != SEW_OK ? SEW_BOTH_BORDERS_NOT_FOUND : SEW_BORDER2_NOT_FOUND );
8325 if ( aResult != SEW_OK )
8328 if (!theSideIsFreeBorder) {
8332 // -------------------------------------------------------------------------
8334 // 1. If nodes to merge are not coincident, move nodes of the free border
8335 // from the coord sys defined by the direction from the first to last
8336 // nodes of the border to the correspondent sys of the side 2
8337 // 2. On the side 2, find the links most co-directed with the correspondent
8338 // links of the free border
8339 // -------------------------------------------------------------------------
8341 // 1. Since sewing may break if there are volumes to split on the side 2,
8342 // we wont move nodes but just compute new coordinates for them
8343 typedef map<const SMDS_MeshNode*, gp_XYZ> TNodeXYZMap;
8344 TNodeXYZMap nBordXYZ;
8345 list< const SMDS_MeshNode* >& bordNodes = nSide[ 0 ];
8346 list< const SMDS_MeshNode* >::iterator nBordIt;
8348 gp_XYZ Pb1( theBordFirstNode->X(), theBordFirstNode->Y(), theBordFirstNode->Z() );
8349 gp_XYZ Pb2( theBordLastNode->X(), theBordLastNode->Y(), theBordLastNode->Z() );
8350 gp_XYZ Ps1( theSideFirstNode->X(), theSideFirstNode->Y(), theSideFirstNode->Z() );
8351 gp_XYZ Ps2( theSideSecondNode->X(), theSideSecondNode->Y(), theSideSecondNode->Z() );
8352 double tol2 = 1.e-8;
8353 gp_Vec Vbs1( Pb1 - Ps1 ),Vbs2( Pb2 - Ps2 );
8354 if ( Vbs1.SquareMagnitude() > tol2 || Vbs2.SquareMagnitude() > tol2 ) {
8355 // Need node movement.
8357 // find X and Z axes to create trsf
8358 gp_Vec Zb( Pb1 - Pb2 ), Zs( Ps1 - Ps2 );
8360 if ( X.SquareMagnitude() <= gp::Resolution() * gp::Resolution() )
8362 X = gp_Ax2( gp::Origin(), Zb ).XDirection();
8365 gp_Ax3 toBordAx( Pb1, Zb, X );
8366 gp_Ax3 fromSideAx( Ps1, Zs, X );
8367 gp_Ax3 toGlobalAx( gp::Origin(), gp::DZ(), gp::DX() );
8369 gp_Trsf toBordSys, fromSide2Sys;
8370 toBordSys.SetTransformation( toBordAx );
8371 fromSide2Sys.SetTransformation( fromSideAx, toGlobalAx );
8372 fromSide2Sys.SetScaleFactor( Zs.Magnitude() / Zb.Magnitude() );
8375 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8376 const SMDS_MeshNode* n = *nBordIt;
8377 gp_XYZ xyz( n->X(),n->Y(),n->Z() );
8378 toBordSys.Transforms( xyz );
8379 fromSide2Sys.Transforms( xyz );
8380 nBordXYZ.insert( TNodeXYZMap::value_type( n, xyz ));
8384 // just insert nodes XYZ in the nBordXYZ map
8385 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8386 const SMDS_MeshNode* n = *nBordIt;
8387 nBordXYZ.insert( TNodeXYZMap::value_type( n, gp_XYZ( n->X(),n->Y(),n->Z() )));
8391 // 2. On the side 2, find the links most co-directed with the correspondent
8392 // links of the free border
8394 list< const SMDS_MeshElement* >& sideElems = eSide[ 1 ];
8395 list< const SMDS_MeshNode* >& sideNodes = nSide[ 1 ];
8396 sideNodes.push_back( theSideFirstNode );
8398 bool hasVolumes = false;
8399 LinkID_Gen aLinkID_Gen( GetMeshDS() );
8400 set<long> foundSideLinkIDs, checkedLinkIDs;
8401 SMDS_VolumeTool volume;
8402 //const SMDS_MeshNode* faceNodes[ 4 ];
8404 const SMDS_MeshNode* sideNode;
8405 const SMDS_MeshElement* sideElem;
8406 const SMDS_MeshNode* prevSideNode = theSideFirstNode;
8407 const SMDS_MeshNode* prevBordNode = theBordFirstNode;
8408 nBordIt = bordNodes.begin();
8410 // border node position and border link direction to compare with
8411 gp_XYZ bordPos = nBordXYZ[ *nBordIt ];
8412 gp_XYZ bordDir = bordPos - nBordXYZ[ prevBordNode ];
8413 // choose next side node by link direction or by closeness to
8414 // the current border node:
8415 bool searchByDir = ( *nBordIt != theBordLastNode );
8417 // find the next node on the Side 2
8419 double maxDot = -DBL_MAX, minDist = DBL_MAX;
8421 checkedLinkIDs.clear();
8422 gp_XYZ prevXYZ( prevSideNode->X(), prevSideNode->Y(), prevSideNode->Z() );
8424 // loop on inverse elements of current node (prevSideNode) on the Side 2
8425 SMDS_ElemIteratorPtr invElemIt = prevSideNode->GetInverseElementIterator();
8426 while ( invElemIt->more() )
8428 const SMDS_MeshElement* elem = invElemIt->next();
8429 // prepare data for a loop on links coming to prevSideNode, of a face or a volume
8430 int iPrevNode, iNode = 0, nbNodes = elem->NbNodes();
8431 vector< const SMDS_MeshNode* > faceNodes( nbNodes, (const SMDS_MeshNode*)0 );
8432 bool isVolume = volume.Set( elem );
8433 const SMDS_MeshNode** nodes = isVolume ? volume.GetNodes() : & faceNodes[0];
8434 if ( isVolume ) // --volume
8436 else if ( elem->GetType()==SMDSAbs_Face ) { // --face
8437 // retrieve all face nodes and find iPrevNode - an index of the prevSideNode
8438 if(elem->IsQuadratic()) {
8439 const SMDS_VtkFace* F =
8440 dynamic_cast<const SMDS_VtkFace*>(elem);
8441 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8442 // use special nodes iterator
8443 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8444 while( anIter->more() ) {
8445 nodes[ iNode ] = cast2Node(anIter->next());
8446 if ( nodes[ iNode++ ] == prevSideNode )
8447 iPrevNode = iNode - 1;
8451 SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
8452 while ( nIt->more() ) {
8453 nodes[ iNode ] = cast2Node( nIt->next() );
8454 if ( nodes[ iNode++ ] == prevSideNode )
8455 iPrevNode = iNode - 1;
8458 // there are 2 links to check
8463 // loop on links, to be precise, on the second node of links
8464 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
8465 const SMDS_MeshNode* n = nodes[ iNode ];
8467 if ( !volume.IsLinked( n, prevSideNode ))
8471 if ( iNode ) // a node before prevSideNode
8472 n = nodes[ iPrevNode == 0 ? elem->NbNodes() - 1 : iPrevNode - 1 ];
8473 else // a node after prevSideNode
8474 n = nodes[ iPrevNode + 1 == elem->NbNodes() ? 0 : iPrevNode + 1 ];
8476 // check if this link was already used
8477 long iLink = aLinkID_Gen.GetLinkID( prevSideNode, n );
8478 bool isJustChecked = !checkedLinkIDs.insert( iLink ).second;
8479 if (!isJustChecked &&
8480 foundSideLinkIDs.find( iLink ) == foundSideLinkIDs.end() )
8482 // test a link geometrically
8483 gp_XYZ nextXYZ ( n->X(), n->Y(), n->Z() );
8484 bool linkIsBetter = false;
8485 double dot = 0.0, dist = 0.0;
8486 if ( searchByDir ) { // choose most co-directed link
8487 dot = bordDir * ( nextXYZ - prevXYZ ).Normalized();
8488 linkIsBetter = ( dot > maxDot );
8490 else { // choose link with the node closest to bordPos
8491 dist = ( nextXYZ - bordPos ).SquareModulus();
8492 linkIsBetter = ( dist < minDist );
8494 if ( linkIsBetter ) {
8503 } // loop on inverse elements of prevSideNode
8506 MESSAGE(" Cant find path by links of the Side 2 ");
8507 return SEW_BAD_SIDE_NODES;
8509 sideNodes.push_back( sideNode );
8510 sideElems.push_back( sideElem );
8511 foundSideLinkIDs.insert ( linkID );
8512 prevSideNode = sideNode;
8514 if ( *nBordIt == theBordLastNode )
8515 searchByDir = false;
8517 // find the next border link to compare with
8518 gp_XYZ sidePos( sideNode->X(), sideNode->Y(), sideNode->Z() );
8519 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8520 // move to next border node if sideNode is before forward border node (bordPos)
8521 while ( *nBordIt != theBordLastNode && !searchByDir ) {
8522 prevBordNode = *nBordIt;
8524 bordPos = nBordXYZ[ *nBordIt ];
8525 bordDir = bordPos - nBordXYZ[ prevBordNode ];
8526 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8530 while ( sideNode != theSideSecondNode );
8532 if ( hasVolumes && sideNodes.size () != bordNodes.size() && !toCreatePolyedrs) {
8533 MESSAGE("VOLUME SPLITTING IS FORBIDDEN");
8534 return SEW_VOLUMES_TO_SPLIT; // volume splitting is forbidden
8536 } // end nodes search on the side 2
8538 // ============================
8539 // sew the border to the side 2
8540 // ============================
8542 int nbNodes[] = { nSide[0].size(), nSide[1].size() };
8543 int maxNbNodes = Max( nbNodes[0], nbNodes[1] );
8545 bool toMergeConformal = ( nbNodes[0] == nbNodes[1] );
8546 if ( toMergeConformal && toCreatePolygons )
8548 // do not merge quadrangles if polygons are OK (IPAL0052824)
8549 eIt[0] = eSide[0].begin();
8550 eIt[1] = eSide[1].begin();
8551 bool allQuads[2] = { true, true };
8552 for ( int iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8553 for ( ; allQuads[iBord] && eIt[iBord] != eSide[iBord].end(); ++eIt[iBord] )
8554 allQuads[iBord] = ( (*eIt[iBord])->NbCornerNodes() == 4 );
8556 toMergeConformal = ( !allQuads[0] && !allQuads[1] );
8559 TListOfListOfNodes nodeGroupsToMerge;
8560 if (( toMergeConformal ) ||
8561 ( theSideIsFreeBorder && !theSideThirdNode )) {
8563 // all nodes are to be merged
8565 for (nIt[0] = nSide[0].begin(), nIt[1] = nSide[1].begin();
8566 nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end();
8567 nIt[0]++, nIt[1]++ )
8569 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8570 nodeGroupsToMerge.back().push_back( *nIt[1] ); // to keep
8571 nodeGroupsToMerge.back().push_back( *nIt[0] ); // to remove
8576 // insert new nodes into the border and the side to get equal nb of segments
8578 // get normalized parameters of nodes on the borders
8579 vector< double > param[ 2 ];
8580 param[0].resize( maxNbNodes );
8581 param[1].resize( maxNbNodes );
8583 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8584 list< const SMDS_MeshNode* >& nodes = nSide[ iBord ];
8585 list< const SMDS_MeshNode* >::iterator nIt = nodes.begin();
8586 const SMDS_MeshNode* nPrev = *nIt;
8587 double bordLength = 0;
8588 for ( iNode = 0; nIt != nodes.end(); nIt++, iNode++ ) { // loop on border nodes
8589 const SMDS_MeshNode* nCur = *nIt;
8590 gp_XYZ segment (nCur->X() - nPrev->X(),
8591 nCur->Y() - nPrev->Y(),
8592 nCur->Z() - nPrev->Z());
8593 double segmentLen = segment.Modulus();
8594 bordLength += segmentLen;
8595 param[ iBord ][ iNode ] = bordLength;
8598 // normalize within [0,1]
8599 for ( iNode = 0; iNode < nbNodes[ iBord ]; iNode++ ) {
8600 param[ iBord ][ iNode ] /= bordLength;
8604 // loop on border segments
8605 const SMDS_MeshNode *nPrev[ 2 ] = { 0, 0 };
8606 int i[ 2 ] = { 0, 0 };
8607 nIt[0] = nSide[0].begin(); eIt[0] = eSide[0].begin();
8608 nIt[1] = nSide[1].begin(); eIt[1] = eSide[1].begin();
8610 TElemOfNodeListMap insertMap;
8611 TElemOfNodeListMap::iterator insertMapIt;
8613 // key: elem to insert nodes into
8614 // value: 2 nodes to insert between + nodes to be inserted
8616 bool next[ 2 ] = { false, false };
8618 // find min adjacent segment length after sewing
8619 double nextParam = 10., prevParam = 0;
8620 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8621 if ( i[ iBord ] + 1 < nbNodes[ iBord ])
8622 nextParam = Min( nextParam, param[iBord][ i[iBord] + 1 ]);
8623 if ( i[ iBord ] > 0 )
8624 prevParam = Max( prevParam, param[iBord][ i[iBord] - 1 ]);
8626 double minParam = Min( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8627 double maxParam = Max( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8628 double minSegLen = Min( nextParam - minParam, maxParam - prevParam );
8630 // choose to insert or to merge nodes
8631 double du = param[ 1 ][ i[1] ] - param[ 0 ][ i[0] ];
8632 if ( Abs( du ) <= minSegLen * 0.2 ) {
8635 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8636 const SMDS_MeshNode* n0 = *nIt[0];
8637 const SMDS_MeshNode* n1 = *nIt[1];
8638 nodeGroupsToMerge.back().push_back( n1 );
8639 nodeGroupsToMerge.back().push_back( n0 );
8640 // position of node of the border changes due to merge
8641 param[ 0 ][ i[0] ] += du;
8642 // move n1 for the sake of elem shape evaluation during insertion.
8643 // n1 will be removed by MergeNodes() anyway
8644 const_cast<SMDS_MeshNode*>( n0 )->setXYZ( n1->X(), n1->Y(), n1->Z() );
8645 next[0] = next[1] = true;
8650 int intoBord = ( du < 0 ) ? 0 : 1;
8651 const SMDS_MeshElement* elem = *eIt [ intoBord ];
8652 const SMDS_MeshNode* n1 = nPrev[ intoBord ];
8653 const SMDS_MeshNode* n2 = *nIt [ intoBord ];
8654 const SMDS_MeshNode* nIns = *nIt [ 1 - intoBord ];
8655 if ( intoBord == 1 ) {
8656 // move node of the border to be on a link of elem of the side
8657 gp_XYZ p1 (n1->X(), n1->Y(), n1->Z());
8658 gp_XYZ p2 (n2->X(), n2->Y(), n2->Z());
8659 double ratio = du / ( param[ 1 ][ i[1] ] - param[ 1 ][ i[1]-1 ]);
8660 gp_XYZ p = p2 * ( 1 - ratio ) + p1 * ratio;
8661 GetMeshDS()->MoveNode( nIns, p.X(), p.Y(), p.Z() );
8663 insertMapIt = insertMap.find( elem );
8664 bool notFound = ( insertMapIt == insertMap.end() );
8665 bool otherLink = ( !notFound && (*insertMapIt).second.front() != n1 );
8667 // insert into another link of the same element:
8668 // 1. perform insertion into the other link of the elem
8669 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8670 const SMDS_MeshNode* n12 = nodeList.front(); nodeList.pop_front();
8671 const SMDS_MeshNode* n22 = nodeList.front(); nodeList.pop_front();
8672 InsertNodesIntoLink( elem, n12, n22, nodeList, toCreatePolygons );
8673 // 2. perform insertion into the link of adjacent faces
8674 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n12, n22, elem )) {
8675 InsertNodesIntoLink( adjElem, n12, n22, nodeList, toCreatePolygons );
8677 while ( const SMDS_MeshElement* seg = findSegment( n12, n22 )) {
8678 InsertNodesIntoLink( seg, n12, n22, nodeList );
8680 if (toCreatePolyedrs) {
8681 // perform insertion into the links of adjacent volumes
8682 UpdateVolumes(n12, n22, nodeList);
8684 // 3. find an element appeared on n1 and n2 after the insertion
8685 insertMap.erase( elem );
8686 elem = findAdjacentFace( n1, n2, 0 );
8688 if ( notFound || otherLink ) {
8689 // add element and nodes of the side into the insertMap
8690 insertMapIt = insertMap.insert( make_pair( elem, list<const SMDS_MeshNode*>() )).first;
8691 (*insertMapIt).second.push_back( n1 );
8692 (*insertMapIt).second.push_back( n2 );
8694 // add node to be inserted into elem
8695 (*insertMapIt).second.push_back( nIns );
8696 next[ 1 - intoBord ] = true;
8699 // go to the next segment
8700 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8701 if ( next[ iBord ] ) {
8702 if ( i[ iBord ] != 0 && eIt[ iBord ] != eSide[ iBord ].end())
8704 nPrev[ iBord ] = *nIt[ iBord ];
8705 nIt[ iBord ]++; i[ iBord ]++;
8709 while ( nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end());
8711 // perform insertion of nodes into elements
8713 for (insertMapIt = insertMap.begin();
8714 insertMapIt != insertMap.end();
8717 const SMDS_MeshElement* elem = (*insertMapIt).first;
8718 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8719 const SMDS_MeshNode* n1 = nodeList.front(); nodeList.pop_front();
8720 const SMDS_MeshNode* n2 = nodeList.front(); nodeList.pop_front();
8722 InsertNodesIntoLink( elem, n1, n2, nodeList, toCreatePolygons );
8724 while ( const SMDS_MeshElement* seg = findSegment( n1, n2 )) {
8725 InsertNodesIntoLink( seg, n1, n2, nodeList );
8728 if ( !theSideIsFreeBorder ) {
8729 // look for and insert nodes into the faces adjacent to elem
8730 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n1, n2, elem )) {
8731 InsertNodesIntoLink( adjElem, n1, n2, nodeList, toCreatePolygons );
8734 if (toCreatePolyedrs) {
8735 // perform insertion into the links of adjacent volumes
8736 UpdateVolumes(n1, n2, nodeList);
8739 } // end: insert new nodes
8741 MergeNodes ( nodeGroupsToMerge );
8744 // Remove coincident segments
8747 TIDSortedElemSet segments;
8748 SMESH_SequenceOfElemPtr newFaces;
8749 for ( int i = 1; i <= myLastCreatedElems.Length(); ++i )
8751 if ( !myLastCreatedElems(i) ) continue;
8752 if ( myLastCreatedElems(i)->GetType() == SMDSAbs_Edge )
8753 segments.insert( segments.end(), myLastCreatedElems(i) );
8755 newFaces.Append( myLastCreatedElems(i) );
8758 TListOfListOfElementsID equalGroups;
8759 if ( !segments.empty() )
8760 FindEqualElements( segments, equalGroups );
8761 if ( !equalGroups.empty() )
8763 // remove from segments those that will be removed
8764 TListOfListOfElementsID::iterator itGroups = equalGroups.begin();
8765 for ( ; itGroups != equalGroups.end(); ++itGroups )
8767 list< int >& group = *itGroups;
8768 list< int >::iterator id = group.begin();
8769 for ( ++id; id != group.end(); ++id )
8770 if ( const SMDS_MeshElement* seg = GetMeshDS()->FindElement( *id ))
8771 segments.erase( seg );
8773 // remove equal segments
8774 MergeElements( equalGroups );
8776 // restore myLastCreatedElems
8777 myLastCreatedElems = newFaces;
8778 TIDSortedElemSet::iterator seg = segments.begin();
8779 for ( ; seg != segments.end(); ++seg )
8780 myLastCreatedElems.Append( *seg );
8786 //=======================================================================
8787 //function : InsertNodesIntoLink
8788 //purpose : insert theNodesToInsert into theElement between theBetweenNode1
8789 // and theBetweenNode2 and split theElement
8790 //=======================================================================
8792 void SMESH_MeshEditor::InsertNodesIntoLink(const SMDS_MeshElement* theElement,
8793 const SMDS_MeshNode* theBetweenNode1,
8794 const SMDS_MeshNode* theBetweenNode2,
8795 list<const SMDS_MeshNode*>& theNodesToInsert,
8796 const bool toCreatePoly)
8798 if ( !theElement ) return;
8800 SMESHDS_Mesh *aMesh = GetMeshDS();
8801 vector<const SMDS_MeshElement*> newElems;
8803 if ( theElement->GetType() == SMDSAbs_Edge )
8805 theNodesToInsert.push_front( theBetweenNode1 );
8806 theNodesToInsert.push_back ( theBetweenNode2 );
8807 list<const SMDS_MeshNode*>::iterator n = theNodesToInsert.begin();
8808 const SMDS_MeshNode* n1 = *n;
8809 for ( ++n; n != theNodesToInsert.end(); ++n )
8811 const SMDS_MeshNode* n2 = *n;
8812 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( n1, n2 ))
8813 AddToSameGroups( seg, theElement, aMesh );
8815 newElems.push_back( aMesh->AddEdge ( n1, n2 ));
8818 theNodesToInsert.pop_front();
8819 theNodesToInsert.pop_back();
8821 if ( theElement->IsQuadratic() ) // add a not split part
8823 vector<const SMDS_MeshNode*> nodes( theElement->begin_nodes(),
8824 theElement->end_nodes() );
8825 int iOther = 0, nbN = nodes.size();
8826 for ( ; iOther < nbN; ++iOther )
8827 if ( nodes[iOther] != theBetweenNode1 &&
8828 nodes[iOther] != theBetweenNode2 )
8832 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[0], nodes[1] ))
8833 AddToSameGroups( seg, theElement, aMesh );
8835 newElems.push_back( aMesh->AddEdge ( nodes[0], nodes[1] ));
8837 else if ( iOther == 2 )
8839 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[1], nodes[2] ))
8840 AddToSameGroups( seg, theElement, aMesh );
8842 newElems.push_back( aMesh->AddEdge ( nodes[1], nodes[2] ));
8845 // treat new elements
8846 for ( size_t i = 0; i < newElems.size(); ++i )
8849 aMesh->SetMeshElementOnShape( newElems[i], theElement->getshapeId() );
8850 myLastCreatedElems.Append( newElems[i] );
8852 ReplaceElemInGroups( theElement, newElems, aMesh );
8853 aMesh->RemoveElement( theElement );
8856 } // if ( theElement->GetType() == SMDSAbs_Edge )
8858 const SMDS_MeshElement* theFace = theElement;
8859 if ( theFace->GetType() != SMDSAbs_Face ) return;
8861 // find indices of 2 link nodes and of the rest nodes
8862 int iNode = 0, il1, il2, i3, i4;
8863 il1 = il2 = i3 = i4 = -1;
8864 vector<const SMDS_MeshNode*> nodes( theFace->NbNodes() );
8866 SMDS_NodeIteratorPtr nodeIt = theFace->interlacedNodesIterator();
8867 while ( nodeIt->more() ) {
8868 const SMDS_MeshNode* n = nodeIt->next();
8869 if ( n == theBetweenNode1 )
8871 else if ( n == theBetweenNode2 )
8877 nodes[ iNode++ ] = n;
8879 if ( il1 < 0 || il2 < 0 || i3 < 0 )
8882 // arrange link nodes to go one after another regarding the face orientation
8883 bool reverse = ( Abs( il2 - il1 ) == 1 ? il2 < il1 : il1 < il2 );
8884 list<const SMDS_MeshNode *> aNodesToInsert = theNodesToInsert;
8889 aNodesToInsert.reverse();
8891 // check that not link nodes of a quadrangles are in good order
8892 int nbFaceNodes = theFace->NbNodes();
8893 if ( nbFaceNodes == 4 && i4 - i3 != 1 ) {
8899 if (toCreatePoly || theFace->IsPoly()) {
8902 vector<const SMDS_MeshNode *> poly_nodes (nbFaceNodes + aNodesToInsert.size());
8904 // add nodes of face up to first node of link
8907 if ( theFace->IsQuadratic() ) {
8908 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>(theFace);
8909 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8910 // use special nodes iterator
8911 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8912 while( anIter->more() && !isFLN ) {
8913 const SMDS_MeshNode* n = cast2Node(anIter->next());
8914 poly_nodes[iNode++] = n;
8915 if (n == nodes[il1]) {
8919 // add nodes to insert
8920 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8921 for (; nIt != aNodesToInsert.end(); nIt++) {
8922 poly_nodes[iNode++] = *nIt;
8924 // add nodes of face starting from last node of link
8925 while ( anIter->more() ) {
8926 poly_nodes[iNode++] = cast2Node(anIter->next());
8930 SMDS_ElemIteratorPtr nodeIt = theFace->nodesIterator();
8931 while ( nodeIt->more() && !isFLN ) {
8932 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8933 poly_nodes[iNode++] = n;
8934 if (n == nodes[il1]) {
8938 // add nodes to insert
8939 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8940 for (; nIt != aNodesToInsert.end(); nIt++) {
8941 poly_nodes[iNode++] = *nIt;
8943 // add nodes of face starting from last node of link
8944 while ( nodeIt->more() ) {
8945 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8946 poly_nodes[iNode++] = n;
8951 newElems.push_back( aMesh->AddPolygonalFace( poly_nodes ));
8954 else if ( !theFace->IsQuadratic() )
8956 // put aNodesToInsert between theBetweenNode1 and theBetweenNode2
8957 int nbLinkNodes = 2 + aNodesToInsert.size();
8958 //const SMDS_MeshNode* linkNodes[ nbLinkNodes ];
8959 vector<const SMDS_MeshNode*> linkNodes( nbLinkNodes );
8960 linkNodes[ 0 ] = nodes[ il1 ];
8961 linkNodes[ nbLinkNodes - 1 ] = nodes[ il2 ];
8962 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8963 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
8964 linkNodes[ iNode++ ] = *nIt;
8966 // decide how to split a quadrangle: compare possible variants
8967 // and choose which of splits to be a quadrangle
8968 int i1, i2, iSplit, nbSplits = nbLinkNodes - 1, iBestQuad;
8969 if ( nbFaceNodes == 3 ) {
8970 iBestQuad = nbSplits;
8973 else if ( nbFaceNodes == 4 ) {
8974 SMESH::Controls::NumericalFunctorPtr aCrit( new SMESH::Controls::AspectRatio);
8975 double aBestRate = DBL_MAX;
8976 for ( int iQuad = 0; iQuad < nbSplits; iQuad++ ) {
8978 double aBadRate = 0;
8979 // evaluate elements quality
8980 for ( iSplit = 0; iSplit < nbSplits; iSplit++ ) {
8981 if ( iSplit == iQuad ) {
8982 SMDS_FaceOfNodes quad (linkNodes[ i1++ ],
8986 aBadRate += getBadRate( &quad, aCrit );
8989 SMDS_FaceOfNodes tria (linkNodes[ i1++ ],
8991 nodes[ iSplit < iQuad ? i4 : i3 ]);
8992 aBadRate += getBadRate( &tria, aCrit );
8996 if ( aBadRate < aBestRate ) {
8998 aBestRate = aBadRate;
9003 // create new elements
9005 for ( iSplit = 0; iSplit < nbSplits - 1; iSplit++ ) {
9006 SMDS_MeshElement* newElem = 0;
9007 if ( iSplit == iBestQuad )
9008 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
9013 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
9015 nodes[ iSplit < iBestQuad ? i4 : i3 ]));
9018 const SMDS_MeshNode* newNodes[ 4 ];
9019 newNodes[ 0 ] = linkNodes[ i1 ];
9020 newNodes[ 1 ] = linkNodes[ i2 ];
9021 newNodes[ 2 ] = nodes[ iSplit >= iBestQuad ? i3 : i4 ];
9022 newNodes[ 3 ] = nodes[ i4 ];
9023 if (iSplit == iBestQuad)
9024 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2], newNodes[3] ));
9026 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2] ));
9028 } // end if(!theFace->IsQuadratic())
9030 else { // theFace is quadratic
9031 // we have to split theFace on simple triangles and one simple quadrangle
9033 int nbshift = tmp*2;
9034 // shift nodes in nodes[] by nbshift
9036 for(i=0; i<nbshift; i++) {
9037 const SMDS_MeshNode* n = nodes[0];
9038 for(j=0; j<nbFaceNodes-1; j++) {
9039 nodes[j] = nodes[j+1];
9041 nodes[nbFaceNodes-1] = n;
9043 il1 = il1 - nbshift;
9044 // now have to insert nodes between n0 and n1 or n1 and n2 (see below)
9045 // n0 n1 n2 n0 n1 n2
9046 // +-----+-----+ +-----+-----+
9055 // create new elements
9057 if ( nbFaceNodes == 6 ) { // quadratic triangle
9058 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
9059 if ( theFace->IsMediumNode(nodes[il1]) ) {
9060 // create quadrangle
9061 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[5] ));
9067 // create quadrangle
9068 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[5] ));
9074 else { // nbFaceNodes==8 - quadratic quadrangle
9075 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
9076 newElems.push_back( aMesh->AddFace( nodes[5], nodes[6], nodes[7] ));
9077 newElems.push_back( aMesh->AddFace( nodes[5], nodes[7], nodes[3] ));
9078 if ( theFace->IsMediumNode( nodes[ il1 ])) {
9079 // create quadrangle
9080 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[7] ));
9086 // create quadrangle
9087 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[7] ));
9093 // create needed triangles using n1,n2,n3 and inserted nodes
9094 int nbn = 2 + aNodesToInsert.size();
9095 vector<const SMDS_MeshNode*> aNodes(nbn);
9096 aNodes[0 ] = nodes[n1];
9097 aNodes[nbn-1] = nodes[n2];
9098 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
9099 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
9100 aNodes[iNode++] = *nIt;
9102 for ( i = 1; i < nbn; i++ )
9103 newElems.push_back( aMesh->AddFace( aNodes[i-1], aNodes[i], nodes[n3] ));
9106 // remove the old face
9107 for ( size_t i = 0; i < newElems.size(); ++i )
9110 aMesh->SetMeshElementOnShape( newElems[i], theFace->getshapeId() );
9111 myLastCreatedElems.Append( newElems[i] );
9113 ReplaceElemInGroups( theFace, newElems, aMesh );
9114 aMesh->RemoveElement(theFace);
9116 } // InsertNodesIntoLink()
9118 //=======================================================================
9119 //function : UpdateVolumes
9121 //=======================================================================
9123 void SMESH_MeshEditor::UpdateVolumes (const SMDS_MeshNode* theBetweenNode1,
9124 const SMDS_MeshNode* theBetweenNode2,
9125 list<const SMDS_MeshNode*>& theNodesToInsert)
9127 myLastCreatedElems.Clear();
9128 myLastCreatedNodes.Clear();
9130 SMDS_ElemIteratorPtr invElemIt = theBetweenNode1->GetInverseElementIterator(SMDSAbs_Volume);
9131 while (invElemIt->more()) { // loop on inverse elements of theBetweenNode1
9132 const SMDS_MeshElement* elem = invElemIt->next();
9134 // check, if current volume has link theBetweenNode1 - theBetweenNode2
9135 SMDS_VolumeTool aVolume (elem);
9136 if (!aVolume.IsLinked(theBetweenNode1, theBetweenNode2))
9139 // insert new nodes in all faces of the volume, sharing link theBetweenNode1 - theBetweenNode2
9140 int iface, nbFaces = aVolume.NbFaces();
9141 vector<const SMDS_MeshNode *> poly_nodes;
9142 vector<int> quantities (nbFaces);
9144 for (iface = 0; iface < nbFaces; iface++) {
9145 int nbFaceNodes = aVolume.NbFaceNodes(iface), nbInserted = 0;
9146 // faceNodes will contain (nbFaceNodes + 1) nodes, last = first
9147 const SMDS_MeshNode** faceNodes = aVolume.GetFaceNodes(iface);
9149 for (int inode = 0; inode < nbFaceNodes; inode++) {
9150 poly_nodes.push_back(faceNodes[inode]);
9152 if (nbInserted == 0) {
9153 if (faceNodes[inode] == theBetweenNode1) {
9154 if (faceNodes[inode + 1] == theBetweenNode2) {
9155 nbInserted = theNodesToInsert.size();
9157 // add nodes to insert
9158 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.begin();
9159 for (; nIt != theNodesToInsert.end(); nIt++) {
9160 poly_nodes.push_back(*nIt);
9164 else if (faceNodes[inode] == theBetweenNode2) {
9165 if (faceNodes[inode + 1] == theBetweenNode1) {
9166 nbInserted = theNodesToInsert.size();
9168 // add nodes to insert in reversed order
9169 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.end();
9171 for (; nIt != theNodesToInsert.begin(); nIt--) {
9172 poly_nodes.push_back(*nIt);
9174 poly_nodes.push_back(*nIt);
9181 quantities[iface] = nbFaceNodes + nbInserted;
9184 // Replace the volume
9185 SMESHDS_Mesh *aMesh = GetMeshDS();
9187 if ( SMDS_MeshElement* newElem = aMesh->AddPolyhedralVolume( poly_nodes, quantities ))
9189 aMesh->SetMeshElementOnShape( newElem, elem->getshapeId() );
9190 myLastCreatedElems.Append( newElem );
9191 ReplaceElemInGroups( elem, newElem, aMesh );
9193 aMesh->RemoveElement( elem );
9199 //================================================================================
9201 * \brief Transform any volume into data of SMDSEntity_Polyhedra
9203 //================================================================================
9205 void volumeToPolyhedron( const SMDS_MeshElement* elem,
9206 vector<const SMDS_MeshNode *> & nodes,
9207 vector<int> & nbNodeInFaces )
9210 nbNodeInFaces.clear();
9211 SMDS_VolumeTool vTool ( elem );
9212 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
9214 const SMDS_MeshNode** fNodes = vTool.GetFaceNodes( iF );
9215 nodes.insert( nodes.end(), fNodes, fNodes + vTool.NbFaceNodes( iF ));
9216 nbNodeInFaces.push_back( vTool.NbFaceNodes( iF ));
9221 //=======================================================================
9223 * \brief Convert elements contained in a sub-mesh to quadratic
9224 * \return int - nb of checked elements
9226 //=======================================================================
9228 int SMESH_MeshEditor::convertElemToQuadratic(SMESHDS_SubMesh * theSm,
9229 SMESH_MesherHelper& theHelper,
9230 const bool theForce3d)
9233 if( !theSm ) return nbElem;
9235 vector<int> nbNodeInFaces;
9236 vector<const SMDS_MeshNode *> nodes;
9237 SMDS_ElemIteratorPtr ElemItr = theSm->GetElements();
9238 while(ElemItr->more())
9241 const SMDS_MeshElement* elem = ElemItr->next();
9242 if( !elem ) continue;
9244 // analyse a necessity of conversion
9245 const SMDSAbs_ElementType aType = elem->GetType();
9246 if ( aType < SMDSAbs_Edge || aType > SMDSAbs_Volume )
9248 const SMDSAbs_EntityType aGeomType = elem->GetEntityType();
9249 bool hasCentralNodes = false;
9250 if ( elem->IsQuadratic() )
9253 switch ( aGeomType ) {
9254 case SMDSEntity_Quad_Triangle:
9255 case SMDSEntity_Quad_Quadrangle:
9256 case SMDSEntity_Quad_Hexa:
9257 alreadyOK = !theHelper.GetIsBiQuadratic(); break;
9259 case SMDSEntity_BiQuad_Triangle:
9260 case SMDSEntity_BiQuad_Quadrangle:
9261 case SMDSEntity_TriQuad_Hexa:
9262 alreadyOK = theHelper.GetIsBiQuadratic();
9263 hasCentralNodes = true;
9268 // take into account already present modium nodes
9270 case SMDSAbs_Volume:
9271 theHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( elem )); break;
9273 theHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( elem )); break;
9275 theHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( elem )); break;
9281 // get elem data needed to re-create it
9283 const int id = elem->GetID();
9284 const int nbNodes = elem->NbCornerNodes();
9285 nodes.assign(elem->begin_nodes(), elem->end_nodes());
9286 if ( aGeomType == SMDSEntity_Polyhedra )
9287 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >( elem )->GetQuantities();
9288 else if ( aGeomType == SMDSEntity_Hexagonal_Prism )
9289 volumeToPolyhedron( elem, nodes, nbNodeInFaces );
9291 // remove a linear element
9292 GetMeshDS()->RemoveFreeElement(elem, theSm, /*fromGroups=*/false);
9294 // remove central nodes of biquadratic elements (biquad->quad convertion)
9295 if ( hasCentralNodes )
9296 for ( size_t i = nbNodes * 2; i < nodes.size(); ++i )
9297 if ( nodes[i]->NbInverseElements() == 0 )
9298 GetMeshDS()->RemoveFreeNode( nodes[i], theSm, /*fromGroups=*/true );
9300 const SMDS_MeshElement* NewElem = 0;
9306 NewElem = theHelper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9314 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9317 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9320 NewElem = theHelper.AddPolygonalFace(nodes, id, theForce3d);
9324 case SMDSAbs_Volume :
9328 case SMDSEntity_Tetra:
9329 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9331 case SMDSEntity_Pyramid:
9332 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], id, theForce3d);
9334 case SMDSEntity_Penta:
9335 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], nodes[5], id, theForce3d);
9337 case SMDSEntity_Hexa:
9338 case SMDSEntity_Quad_Hexa:
9339 case SMDSEntity_TriQuad_Hexa:
9340 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9341 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9343 case SMDSEntity_Hexagonal_Prism:
9345 NewElem = theHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9352 ReplaceElemInGroups( elem, NewElem, GetMeshDS());
9353 if( NewElem && NewElem->getshapeId() < 1 )
9354 theSm->AddElement( NewElem );
9358 //=======================================================================
9359 //function : ConvertToQuadratic
9361 //=======================================================================
9363 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d, const bool theToBiQuad)
9365 SMESHDS_Mesh* meshDS = GetMeshDS();
9367 SMESH_MesherHelper aHelper(*myMesh);
9369 aHelper.SetIsQuadratic( true );
9370 aHelper.SetIsBiQuadratic( theToBiQuad );
9371 aHelper.SetElementsOnShape(true);
9372 aHelper.ToFixNodeParameters( true );
9374 // convert elements assigned to sub-meshes
9375 int nbCheckedElems = 0;
9376 if ( myMesh->HasShapeToMesh() )
9378 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9380 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9381 while ( smIt->more() ) {
9382 SMESH_subMesh* sm = smIt->next();
9383 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() ) {
9384 aHelper.SetSubShape( sm->GetSubShape() );
9385 nbCheckedElems += convertElemToQuadratic(smDS, aHelper, theForce3d);
9391 // convert elements NOT assigned to sub-meshes
9392 int totalNbElems = meshDS->NbEdges() + meshDS->NbFaces() + meshDS->NbVolumes();
9393 if ( nbCheckedElems < totalNbElems ) // not all elements are in sub-meshes
9395 aHelper.SetElementsOnShape(false);
9396 SMESHDS_SubMesh *smDS = 0;
9399 SMDS_EdgeIteratorPtr aEdgeItr = meshDS->edgesIterator();
9400 while( aEdgeItr->more() )
9402 const SMDS_MeshEdge* edge = aEdgeItr->next();
9403 if ( !edge->IsQuadratic() )
9405 int id = edge->GetID();
9406 const SMDS_MeshNode* n1 = edge->GetNode(0);
9407 const SMDS_MeshNode* n2 = edge->GetNode(1);
9409 meshDS->RemoveFreeElement(edge, smDS, /*fromGroups=*/false);
9411 const SMDS_MeshEdge* NewEdge = aHelper.AddEdge(n1, n2, id, theForce3d);
9412 ReplaceElemInGroups( edge, NewEdge, GetMeshDS());
9416 aHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( edge ));
9421 SMDS_FaceIteratorPtr aFaceItr = meshDS->facesIterator();
9422 while( aFaceItr->more() )
9424 const SMDS_MeshFace* face = aFaceItr->next();
9425 if ( !face ) continue;
9427 const SMDSAbs_EntityType type = face->GetEntityType();
9431 case SMDSEntity_Quad_Triangle:
9432 case SMDSEntity_Quad_Quadrangle:
9433 alreadyOK = !theToBiQuad;
9434 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9436 case SMDSEntity_BiQuad_Triangle:
9437 case SMDSEntity_BiQuad_Quadrangle:
9438 alreadyOK = theToBiQuad;
9439 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9441 default: alreadyOK = false;
9446 const int id = face->GetID();
9447 vector<const SMDS_MeshNode *> nodes ( face->begin_nodes(), face->end_nodes());
9449 meshDS->RemoveFreeElement(face, smDS, /*fromGroups=*/false);
9451 SMDS_MeshFace * NewFace = 0;
9454 case SMDSEntity_Triangle:
9455 case SMDSEntity_Quad_Triangle:
9456 case SMDSEntity_BiQuad_Triangle:
9457 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9458 if ( nodes.size() == 7 && nodes[6]->NbInverseElements() == 0 ) // rm a central node
9459 GetMeshDS()->RemoveFreeNode( nodes[6], /*sm=*/0, /*fromGroups=*/true );
9462 case SMDSEntity_Quadrangle:
9463 case SMDSEntity_Quad_Quadrangle:
9464 case SMDSEntity_BiQuad_Quadrangle:
9465 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9466 if ( nodes.size() == 9 && nodes[8]->NbInverseElements() == 0 ) // rm a central node
9467 GetMeshDS()->RemoveFreeNode( nodes[8], /*sm=*/0, /*fromGroups=*/true );
9471 NewFace = aHelper.AddPolygonalFace(nodes, id, theForce3d);
9473 ReplaceElemInGroups( face, NewFace, GetMeshDS());
9477 vector<int> nbNodeInFaces;
9478 SMDS_VolumeIteratorPtr aVolumeItr = meshDS->volumesIterator();
9479 while(aVolumeItr->more())
9481 const SMDS_MeshVolume* volume = aVolumeItr->next();
9482 if ( !volume ) continue;
9484 const SMDSAbs_EntityType type = volume->GetEntityType();
9485 if ( volume->IsQuadratic() )
9490 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9491 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9492 default: alreadyOK = true;
9496 aHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( volume ));
9500 const int id = volume->GetID();
9501 vector<const SMDS_MeshNode *> nodes (volume->begin_nodes(), volume->end_nodes());
9502 if ( type == SMDSEntity_Polyhedra )
9503 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >(volume)->GetQuantities();
9504 else if ( type == SMDSEntity_Hexagonal_Prism )
9505 volumeToPolyhedron( volume, nodes, nbNodeInFaces );
9507 meshDS->RemoveFreeElement(volume, smDS, /*fromGroups=*/false);
9509 SMDS_MeshVolume * NewVolume = 0;
9512 case SMDSEntity_Tetra:
9513 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d );
9515 case SMDSEntity_Hexa:
9516 case SMDSEntity_Quad_Hexa:
9517 case SMDSEntity_TriQuad_Hexa:
9518 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9519 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9520 for ( size_t i = 20; i < nodes.size(); ++i ) // rm central nodes
9521 if ( nodes[i]->NbInverseElements() == 0 )
9522 GetMeshDS()->RemoveFreeNode( nodes[i], /*sm=*/0, /*fromGroups=*/true );
9524 case SMDSEntity_Pyramid:
9525 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9526 nodes[3], nodes[4], id, theForce3d);
9528 case SMDSEntity_Penta:
9529 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9530 nodes[3], nodes[4], nodes[5], id, theForce3d);
9532 case SMDSEntity_Hexagonal_Prism:
9534 NewVolume = aHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9536 ReplaceElemInGroups(volume, NewVolume, meshDS);
9541 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9542 // aHelper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9543 // aHelper.FixQuadraticElements(myError);
9544 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9548 //================================================================================
9550 * \brief Makes given elements quadratic
9551 * \param theForce3d - if true, the medium nodes will be placed in the middle of link
9552 * \param theElements - elements to make quadratic
9554 //================================================================================
9556 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d,
9557 TIDSortedElemSet& theElements,
9558 const bool theToBiQuad)
9560 if ( theElements.empty() ) return;
9562 // we believe that all theElements are of the same type
9563 const SMDSAbs_ElementType elemType = (*theElements.begin())->GetType();
9565 // get all nodes shared by theElements
9566 TIDSortedNodeSet allNodes;
9567 TIDSortedElemSet::iterator eIt = theElements.begin();
9568 for ( ; eIt != theElements.end(); ++eIt )
9569 allNodes.insert( (*eIt)->begin_nodes(), (*eIt)->end_nodes() );
9571 // complete theElements with elements of lower dim whose all nodes are in allNodes
9573 TIDSortedElemSet quadAdjacentElems [ SMDSAbs_NbElementTypes ]; // quadratic adjacent elements
9574 TIDSortedElemSet checkedAdjacentElems [ SMDSAbs_NbElementTypes ];
9575 TIDSortedNodeSet::iterator nIt = allNodes.begin();
9576 for ( ; nIt != allNodes.end(); ++nIt )
9578 const SMDS_MeshNode* n = *nIt;
9579 SMDS_ElemIteratorPtr invIt = n->GetInverseElementIterator();
9580 while ( invIt->more() )
9582 const SMDS_MeshElement* e = invIt->next();
9583 const SMDSAbs_ElementType type = e->GetType();
9584 if ( e->IsQuadratic() )
9586 quadAdjacentElems[ type ].insert( e );
9589 switch ( e->GetEntityType() ) {
9590 case SMDSEntity_Quad_Triangle:
9591 case SMDSEntity_Quad_Quadrangle:
9592 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9593 case SMDSEntity_BiQuad_Triangle:
9594 case SMDSEntity_BiQuad_Quadrangle:
9595 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9596 default: alreadyOK = true;
9601 if ( type >= elemType )
9602 continue; // same type or more complex linear element
9604 if ( !checkedAdjacentElems[ type ].insert( e ).second )
9605 continue; // e is already checked
9609 SMDS_NodeIteratorPtr nodeIt = e->nodeIterator();
9610 while ( nodeIt->more() && allIn )
9611 allIn = allNodes.count( nodeIt->next() );
9613 theElements.insert(e );
9617 SMESH_MesherHelper helper(*myMesh);
9618 helper.SetIsQuadratic( true );
9619 helper.SetIsBiQuadratic( theToBiQuad );
9621 // add links of quadratic adjacent elements to the helper
9623 if ( !quadAdjacentElems[SMDSAbs_Edge].empty() )
9624 for ( eIt = quadAdjacentElems[SMDSAbs_Edge].begin();
9625 eIt != quadAdjacentElems[SMDSAbs_Edge].end(); ++eIt )
9627 helper.AddTLinks( static_cast< const SMDS_MeshEdge*> (*eIt) );
9629 if ( !quadAdjacentElems[SMDSAbs_Face].empty() )
9630 for ( eIt = quadAdjacentElems[SMDSAbs_Face].begin();
9631 eIt != quadAdjacentElems[SMDSAbs_Face].end(); ++eIt )
9633 helper.AddTLinks( static_cast< const SMDS_MeshFace*> (*eIt) );
9635 if ( !quadAdjacentElems[SMDSAbs_Volume].empty() )
9636 for ( eIt = quadAdjacentElems[SMDSAbs_Volume].begin();
9637 eIt != quadAdjacentElems[SMDSAbs_Volume].end(); ++eIt )
9639 helper.AddTLinks( static_cast< const SMDS_MeshVolume*> (*eIt) );
9642 // make quadratic (or bi-tri-quadratic) elements instead of linear ones
9644 SMESHDS_Mesh* meshDS = GetMeshDS();
9645 SMESHDS_SubMesh* smDS = 0;
9646 for ( eIt = theElements.begin(); eIt != theElements.end(); ++eIt )
9648 const SMDS_MeshElement* elem = *eIt;
9651 int nbCentralNodes = 0;
9652 switch ( elem->GetEntityType() ) {
9653 // linear convertible
9654 case SMDSEntity_Edge:
9655 case SMDSEntity_Triangle:
9656 case SMDSEntity_Quadrangle:
9657 case SMDSEntity_Tetra:
9658 case SMDSEntity_Pyramid:
9659 case SMDSEntity_Hexa:
9660 case SMDSEntity_Penta: alreadyOK = false; nbCentralNodes = 0; break;
9661 // quadratic that can become bi-quadratic
9662 case SMDSEntity_Quad_Triangle:
9663 case SMDSEntity_Quad_Quadrangle:
9664 case SMDSEntity_Quad_Hexa: alreadyOK =!theToBiQuad; nbCentralNodes = 0; break;
9666 case SMDSEntity_BiQuad_Triangle:
9667 case SMDSEntity_BiQuad_Quadrangle: alreadyOK = theToBiQuad; nbCentralNodes = 1; break;
9668 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; nbCentralNodes = 7; break;
9670 default: alreadyOK = true;
9672 if ( alreadyOK ) continue;
9674 const SMDSAbs_ElementType type = elem->GetType();
9675 const int id = elem->GetID();
9676 const int nbNodes = elem->NbCornerNodes();
9677 vector<const SMDS_MeshNode *> nodes ( elem->begin_nodes(), elem->end_nodes());
9679 helper.SetSubShape( elem->getshapeId() );
9681 if ( !smDS || !smDS->Contains( elem ))
9682 smDS = meshDS->MeshElements( elem->getshapeId() );
9683 meshDS->RemoveFreeElement(elem, smDS, /*fromGroups=*/false);
9685 SMDS_MeshElement * newElem = 0;
9688 case 4: // cases for most frequently used element types go first (for optimization)
9689 if ( type == SMDSAbs_Volume )
9690 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9692 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9695 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9696 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9699 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], id, theForce3d);
9702 newElem = helper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9705 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9706 nodes[4], id, theForce3d);
9709 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9710 nodes[4], nodes[5], id, theForce3d);
9714 ReplaceElemInGroups( elem, newElem, meshDS);
9715 if( newElem && smDS )
9716 smDS->AddElement( newElem );
9718 // remove central nodes
9719 for ( size_t i = nodes.size() - nbCentralNodes; i < nodes.size(); ++i )
9720 if ( nodes[i]->NbInverseElements() == 0 )
9721 meshDS->RemoveFreeNode( nodes[i], smDS, /*fromGroups=*/true );
9723 } // loop on theElements
9726 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9727 // helper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9728 // helper.FixQuadraticElements( myError );
9729 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9733 //=======================================================================
9735 * \brief Convert quadratic elements to linear ones and remove quadratic nodes
9736 * \return int - nb of checked elements
9738 //=======================================================================
9740 int SMESH_MeshEditor::removeQuadElem(SMESHDS_SubMesh * theSm,
9741 SMDS_ElemIteratorPtr theItr,
9742 const int theShapeID)
9745 SMESHDS_Mesh* meshDS = GetMeshDS();
9746 ElemFeatures elemType;
9747 vector<const SMDS_MeshNode *> nodes;
9749 while( theItr->more() )
9751 const SMDS_MeshElement* elem = theItr->next();
9753 if( elem && elem->IsQuadratic())
9756 int nbCornerNodes = elem->NbCornerNodes();
9757 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
9759 elemType.Init( elem, /*basicOnly=*/false ).SetID( elem->GetID() ).SetQuad( false );
9761 //remove a quadratic element
9762 if ( !theSm || !theSm->Contains( elem ))
9763 theSm = meshDS->MeshElements( elem->getshapeId() );
9764 meshDS->RemoveFreeElement( elem, theSm, /*fromGroups=*/false );
9766 // remove medium nodes
9767 for ( size_t i = nbCornerNodes; i < nodes.size(); ++i )
9768 if ( nodes[i]->NbInverseElements() == 0 )
9769 meshDS->RemoveFreeNode( nodes[i], theSm );
9771 // add a linear element
9772 nodes.resize( nbCornerNodes );
9773 SMDS_MeshElement * newElem = AddElement( nodes, elemType );
9774 ReplaceElemInGroups(elem, newElem, meshDS);
9775 if( theSm && newElem )
9776 theSm->AddElement( newElem );
9782 //=======================================================================
9783 //function : ConvertFromQuadratic
9785 //=======================================================================
9787 bool SMESH_MeshEditor::ConvertFromQuadratic()
9789 int nbCheckedElems = 0;
9790 if ( myMesh->HasShapeToMesh() )
9792 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9794 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9795 while ( smIt->more() ) {
9796 SMESH_subMesh* sm = smIt->next();
9797 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() )
9798 nbCheckedElems += removeQuadElem( smDS, smDS->GetElements(), sm->GetId() );
9804 GetMeshDS()->NbEdges() + GetMeshDS()->NbFaces() + GetMeshDS()->NbVolumes();
9805 if ( nbCheckedElems < totalNbElems ) // not all elements are in submeshes
9807 SMESHDS_SubMesh *aSM = 0;
9808 removeQuadElem( aSM, GetMeshDS()->elementsIterator(), 0 );
9816 //================================================================================
9818 * \brief Return true if all medium nodes of the element are in the node set
9820 //================================================================================
9822 bool allMediumNodesIn(const SMDS_MeshElement* elem, TIDSortedNodeSet& nodeSet )
9824 for ( int i = elem->NbCornerNodes(); i < elem->NbNodes(); ++i )
9825 if ( !nodeSet.count( elem->GetNode(i) ))
9831 //================================================================================
9833 * \brief Makes given elements linear
9835 //================================================================================
9837 void SMESH_MeshEditor::ConvertFromQuadratic(TIDSortedElemSet& theElements)
9839 if ( theElements.empty() ) return;
9841 // collect IDs of medium nodes of theElements; some of these nodes will be removed
9842 set<int> mediumNodeIDs;
9843 TIDSortedElemSet::iterator eIt = theElements.begin();
9844 for ( ; eIt != theElements.end(); ++eIt )
9846 const SMDS_MeshElement* e = *eIt;
9847 for ( int i = e->NbCornerNodes(); i < e->NbNodes(); ++i )
9848 mediumNodeIDs.insert( e->GetNode(i)->GetID() );
9851 // replace given elements by linear ones
9852 SMDS_ElemIteratorPtr elemIt = elemSetIterator( theElements );
9853 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9855 // we need to convert remaining elements whose all medium nodes are in mediumNodeIDs
9856 // except those elements sharing medium nodes of quadratic element whose medium nodes
9857 // are not all in mediumNodeIDs
9859 // get remaining medium nodes
9860 TIDSortedNodeSet mediumNodes;
9861 set<int>::iterator nIdsIt = mediumNodeIDs.begin();
9862 for ( ; nIdsIt != mediumNodeIDs.end(); ++nIdsIt )
9863 if ( const SMDS_MeshNode* n = GetMeshDS()->FindNode( *nIdsIt ))
9864 mediumNodes.insert( mediumNodes.end(), n );
9866 // find more quadratic elements to convert
9867 TIDSortedElemSet moreElemsToConvert;
9868 TIDSortedNodeSet::iterator nIt = mediumNodes.begin();
9869 for ( ; nIt != mediumNodes.end(); ++nIt )
9871 SMDS_ElemIteratorPtr invIt = (*nIt)->GetInverseElementIterator();
9872 while ( invIt->more() )
9874 const SMDS_MeshElement* e = invIt->next();
9875 if ( e->IsQuadratic() && allMediumNodesIn( e, mediumNodes ))
9877 // find a more complex element including e and
9878 // whose medium nodes are not in mediumNodes
9879 bool complexFound = false;
9880 for ( int type = e->GetType() + 1; type < SMDSAbs_0DElement; ++type )
9882 SMDS_ElemIteratorPtr invIt2 =
9883 (*nIt)->GetInverseElementIterator( SMDSAbs_ElementType( type ));
9884 while ( invIt2->more() )
9886 const SMDS_MeshElement* eComplex = invIt2->next();
9887 if ( eComplex->IsQuadratic() && !allMediumNodesIn( eComplex, mediumNodes))
9889 int nbCommonNodes = SMESH_MeshAlgos::GetCommonNodes( e, eComplex ).size();
9890 if ( nbCommonNodes == e->NbNodes())
9892 complexFound = true;
9893 type = SMDSAbs_NbElementTypes; // to quit from the outer loop
9899 if ( !complexFound )
9900 moreElemsToConvert.insert( e );
9904 elemIt = elemSetIterator( moreElemsToConvert );
9905 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9908 //=======================================================================
9909 //function : SewSideElements
9911 //=======================================================================
9913 SMESH_MeshEditor::Sew_Error
9914 SMESH_MeshEditor::SewSideElements (TIDSortedElemSet& theSide1,
9915 TIDSortedElemSet& theSide2,
9916 const SMDS_MeshNode* theFirstNode1,
9917 const SMDS_MeshNode* theFirstNode2,
9918 const SMDS_MeshNode* theSecondNode1,
9919 const SMDS_MeshNode* theSecondNode2)
9921 myLastCreatedElems.Clear();
9922 myLastCreatedNodes.Clear();
9924 MESSAGE ("::::SewSideElements()");
9925 if ( theSide1.size() != theSide2.size() )
9926 return SEW_DIFF_NB_OF_ELEMENTS;
9928 Sew_Error aResult = SEW_OK;
9930 // 1. Build set of faces representing each side
9931 // 2. Find which nodes of the side 1 to merge with ones on the side 2
9932 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
9934 // =======================================================================
9935 // 1. Build set of faces representing each side:
9936 // =======================================================================
9937 // a. build set of nodes belonging to faces
9938 // b. complete set of faces: find missing faces whose nodes are in set of nodes
9939 // c. create temporary faces representing side of volumes if correspondent
9940 // face does not exist
9942 SMESHDS_Mesh* aMesh = GetMeshDS();
9943 // TODO algoritm not OK with vtkUnstructuredGrid: 2 meshes can't share nodes
9944 //SMDS_Mesh aTmpFacesMesh; // try to use the same mesh
9945 TIDSortedElemSet faceSet1, faceSet2;
9946 set<const SMDS_MeshElement*> volSet1, volSet2;
9947 set<const SMDS_MeshNode*> nodeSet1, nodeSet2;
9948 TIDSortedElemSet * faceSetPtr[] = { &faceSet1, &faceSet2 };
9949 set<const SMDS_MeshElement*> * volSetPtr[] = { &volSet1, &volSet2 };
9950 set<const SMDS_MeshNode*> * nodeSetPtr[] = { &nodeSet1, &nodeSet2 };
9951 TIDSortedElemSet * elemSetPtr[] = { &theSide1, &theSide2 };
9952 int iSide, iFace, iNode;
9954 list<const SMDS_MeshElement* > tempFaceList;
9955 for ( iSide = 0; iSide < 2; iSide++ ) {
9956 set<const SMDS_MeshNode*> * nodeSet = nodeSetPtr[ iSide ];
9957 TIDSortedElemSet * elemSet = elemSetPtr[ iSide ];
9958 TIDSortedElemSet * faceSet = faceSetPtr[ iSide ];
9959 set<const SMDS_MeshElement*> * volSet = volSetPtr [ iSide ];
9960 set<const SMDS_MeshElement*>::iterator vIt;
9961 TIDSortedElemSet::iterator eIt;
9962 set<const SMDS_MeshNode*>::iterator nIt;
9964 // check that given nodes belong to given elements
9965 const SMDS_MeshNode* n1 = ( iSide == 0 ) ? theFirstNode1 : theFirstNode2;
9966 const SMDS_MeshNode* n2 = ( iSide == 0 ) ? theSecondNode1 : theSecondNode2;
9967 int firstIndex = -1, secondIndex = -1;
9968 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9969 const SMDS_MeshElement* elem = *eIt;
9970 if ( firstIndex < 0 ) firstIndex = elem->GetNodeIndex( n1 );
9971 if ( secondIndex < 0 ) secondIndex = elem->GetNodeIndex( n2 );
9972 if ( firstIndex > -1 && secondIndex > -1 ) break;
9974 if ( firstIndex < 0 || secondIndex < 0 ) {
9975 // we can simply return until temporary faces created
9976 return (iSide == 0 ) ? SEW_BAD_SIDE1_NODES : SEW_BAD_SIDE2_NODES;
9979 // -----------------------------------------------------------
9980 // 1a. Collect nodes of existing faces
9981 // and build set of face nodes in order to detect missing
9982 // faces corresponding to sides of volumes
9983 // -----------------------------------------------------------
9985 set< set <const SMDS_MeshNode*> > setOfFaceNodeSet;
9987 // loop on the given element of a side
9988 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9989 //const SMDS_MeshElement* elem = *eIt;
9990 const SMDS_MeshElement* elem = *eIt;
9991 if ( elem->GetType() == SMDSAbs_Face ) {
9992 faceSet->insert( elem );
9993 set <const SMDS_MeshNode*> faceNodeSet;
9994 SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
9995 while ( nodeIt->more() ) {
9996 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
9997 nodeSet->insert( n );
9998 faceNodeSet.insert( n );
10000 setOfFaceNodeSet.insert( faceNodeSet );
10002 else if ( elem->GetType() == SMDSAbs_Volume )
10003 volSet->insert( elem );
10005 // ------------------------------------------------------------------------------
10006 // 1b. Complete set of faces: find missing faces whose nodes are in set of nodes
10007 // ------------------------------------------------------------------------------
10009 for ( nIt = nodeSet->begin(); nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
10010 SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
10011 while ( fIt->more() ) { // loop on faces sharing a node
10012 const SMDS_MeshElement* f = fIt->next();
10013 if ( faceSet->find( f ) == faceSet->end() ) {
10014 // check if all nodes are in nodeSet and
10015 // complete setOfFaceNodeSet if they are
10016 set <const SMDS_MeshNode*> faceNodeSet;
10017 SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
10018 bool allInSet = true;
10019 while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
10020 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10021 if ( nodeSet->find( n ) == nodeSet->end() )
10024 faceNodeSet.insert( n );
10027 faceSet->insert( f );
10028 setOfFaceNodeSet.insert( faceNodeSet );
10034 // -------------------------------------------------------------------------
10035 // 1c. Create temporary faces representing sides of volumes if correspondent
10036 // face does not exist
10037 // -------------------------------------------------------------------------
10039 if ( !volSet->empty() ) {
10040 //int nodeSetSize = nodeSet->size();
10042 // loop on given volumes
10043 for ( vIt = volSet->begin(); vIt != volSet->end(); vIt++ ) {
10044 SMDS_VolumeTool vol (*vIt);
10045 // loop on volume faces: find free faces
10046 // --------------------------------------
10047 list<const SMDS_MeshElement* > freeFaceList;
10048 for ( iFace = 0; iFace < vol.NbFaces(); iFace++ ) {
10049 if ( !vol.IsFreeFace( iFace ))
10051 // check if there is already a face with same nodes in a face set
10052 const SMDS_MeshElement* aFreeFace = 0;
10053 const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iFace );
10054 int nbNodes = vol.NbFaceNodes( iFace );
10055 set <const SMDS_MeshNode*> faceNodeSet;
10056 vol.GetFaceNodes( iFace, faceNodeSet );
10057 bool isNewFace = setOfFaceNodeSet.insert( faceNodeSet ).second;
10059 // no such a face is given but it still can exist, check it
10060 vector<const SMDS_MeshNode *> nodes ( fNodes, fNodes + nbNodes);
10061 aFreeFace = aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false );
10063 if ( !aFreeFace ) {
10064 // create a temporary face
10065 if ( nbNodes == 3 ) {
10066 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2] );
10067 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2] );
10069 else if ( nbNodes == 4 ) {
10070 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
10071 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
10074 vector<const SMDS_MeshNode *> poly_nodes ( fNodes, & fNodes[nbNodes]);
10075 //aFreeFace = aTmpFacesMesh.AddPolygonalFace(poly_nodes);
10076 aFreeFace = aMesh->AddPolygonalFace(poly_nodes);
10079 tempFaceList.push_back( aFreeFace );
10083 freeFaceList.push_back( aFreeFace );
10085 } // loop on faces of a volume
10087 // choose one of several free faces of a volume
10088 // --------------------------------------------
10089 if ( freeFaceList.size() > 1 ) {
10090 // choose a face having max nb of nodes shared by other elems of a side
10091 int maxNbNodes = -1;
10092 list<const SMDS_MeshElement* >::iterator fIt = freeFaceList.begin();
10093 while ( fIt != freeFaceList.end() ) { // loop on free faces
10094 int nbSharedNodes = 0;
10095 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10096 while ( nodeIt->more() ) { // loop on free face nodes
10097 const SMDS_MeshNode* n =
10098 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10099 SMDS_ElemIteratorPtr invElemIt = n->GetInverseElementIterator();
10100 while ( invElemIt->more() ) {
10101 const SMDS_MeshElement* e = invElemIt->next();
10102 nbSharedNodes += faceSet->count( e );
10103 nbSharedNodes += elemSet->count( e );
10106 if ( nbSharedNodes > maxNbNodes ) {
10107 maxNbNodes = nbSharedNodes;
10108 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10110 else if ( nbSharedNodes == maxNbNodes ) {
10114 freeFaceList.erase( fIt++ ); // here fIt++ occurs before erase
10117 if ( freeFaceList.size() > 1 )
10119 // could not choose one face, use another way
10120 // choose a face most close to the bary center of the opposite side
10121 gp_XYZ aBC( 0., 0., 0. );
10122 set <const SMDS_MeshNode*> addedNodes;
10123 TIDSortedElemSet * elemSet2 = elemSetPtr[ 1 - iSide ];
10124 eIt = elemSet2->begin();
10125 for ( eIt = elemSet2->begin(); eIt != elemSet2->end(); eIt++ ) {
10126 SMDS_ElemIteratorPtr nodeIt = (*eIt)->nodesIterator();
10127 while ( nodeIt->more() ) { // loop on free face nodes
10128 const SMDS_MeshNode* n =
10129 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10130 if ( addedNodes.insert( n ).second )
10131 aBC += gp_XYZ( n->X(),n->Y(),n->Z() );
10134 aBC /= addedNodes.size();
10135 double minDist = DBL_MAX;
10136 fIt = freeFaceList.begin();
10137 while ( fIt != freeFaceList.end() ) { // loop on free faces
10139 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10140 while ( nodeIt->more() ) { // loop on free face nodes
10141 const SMDS_MeshNode* n =
10142 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10143 gp_XYZ p( n->X(),n->Y(),n->Z() );
10144 dist += ( aBC - p ).SquareModulus();
10146 if ( dist < minDist ) {
10148 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10151 fIt = freeFaceList.erase( fIt++ );
10154 } // choose one of several free faces of a volume
10156 if ( freeFaceList.size() == 1 ) {
10157 const SMDS_MeshElement* aFreeFace = freeFaceList.front();
10158 faceSet->insert( aFreeFace );
10159 // complete a node set with nodes of a found free face
10160 // for ( iNode = 0; iNode < ; iNode++ )
10161 // nodeSet->insert( fNodes[ iNode ] );
10164 } // loop on volumes of a side
10166 // // complete a set of faces if new nodes in a nodeSet appeared
10167 // // ----------------------------------------------------------
10168 // if ( nodeSetSize != nodeSet->size() ) {
10169 // for ( ; nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
10170 // SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
10171 // while ( fIt->more() ) { // loop on faces sharing a node
10172 // const SMDS_MeshElement* f = fIt->next();
10173 // if ( faceSet->find( f ) == faceSet->end() ) {
10174 // // check if all nodes are in nodeSet and
10175 // // complete setOfFaceNodeSet if they are
10176 // set <const SMDS_MeshNode*> faceNodeSet;
10177 // SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
10178 // bool allInSet = true;
10179 // while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
10180 // const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10181 // if ( nodeSet->find( n ) == nodeSet->end() )
10182 // allInSet = false;
10184 // faceNodeSet.insert( n );
10186 // if ( allInSet ) {
10187 // faceSet->insert( f );
10188 // setOfFaceNodeSet.insert( faceNodeSet );
10194 } // Create temporary faces, if there are volumes given
10197 if ( faceSet1.size() != faceSet2.size() ) {
10198 // delete temporary faces: they are in reverseElements of actual nodes
10199 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10200 // while ( tmpFaceIt->more() )
10201 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10202 // list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10203 // for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10204 // aMesh->RemoveElement(*tmpFaceIt);
10205 MESSAGE("Diff nb of faces");
10206 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10209 // ============================================================
10210 // 2. Find nodes to merge:
10211 // bind a node to remove to a node to put instead
10212 // ============================================================
10214 TNodeNodeMap nReplaceMap; // bind a node to remove to a node to put instead
10215 if ( theFirstNode1 != theFirstNode2 )
10216 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10217 if ( theSecondNode1 != theSecondNode2 )
10218 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10220 LinkID_Gen aLinkID_Gen( GetMeshDS() );
10221 set< long > linkIdSet; // links to process
10222 linkIdSet.insert( aLinkID_Gen.GetLinkID( theFirstNode1, theSecondNode1 ));
10224 typedef pair< const SMDS_MeshNode*, const SMDS_MeshNode* > NLink;
10225 list< NLink > linkList[2];
10226 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10227 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10228 // loop on links in linkList; find faces by links and append links
10229 // of the found faces to linkList
10230 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10231 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ )
10233 NLink link[] = { *linkIt[0], *linkIt[1] };
10234 long linkID = aLinkID_Gen.GetLinkID( link[0].first, link[0].second );
10235 if ( !linkIdSet.count( linkID ) )
10238 // by links, find faces in the face sets,
10239 // and find indices of link nodes in the found faces;
10240 // in a face set, there is only one or no face sharing a link
10241 // ---------------------------------------------------------------
10243 const SMDS_MeshElement* face[] = { 0, 0 };
10244 vector<const SMDS_MeshNode*> fnodes[2];
10245 int iLinkNode[2][2];
10246 TIDSortedElemSet avoidSet;
10247 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10248 const SMDS_MeshNode* n1 = link[iSide].first;
10249 const SMDS_MeshNode* n2 = link[iSide].second;
10250 //cout << "Side " << iSide << " ";
10251 //cout << "L( " << n1->GetID() << ", " << n2->GetID() << " ) " << endl;
10252 // find a face by two link nodes
10253 face[ iSide ] = SMESH_MeshAlgos::FindFaceInSet( n1, n2,
10254 *faceSetPtr[ iSide ], avoidSet,
10255 &iLinkNode[iSide][0],
10256 &iLinkNode[iSide][1] );
10257 if ( face[ iSide ])
10259 //cout << " F " << face[ iSide]->GetID() <<endl;
10260 faceSetPtr[ iSide ]->erase( face[ iSide ]);
10261 // put face nodes to fnodes
10262 if ( face[ iSide ]->IsQuadratic() )
10264 // use interlaced nodes iterator
10265 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>( face[ iSide ]);
10266 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
10267 SMDS_ElemIteratorPtr nIter = F->interlacedNodesElemIterator();
10268 while ( nIter->more() )
10269 fnodes[ iSide ].push_back( cast2Node( nIter->next() ));
10273 fnodes[ iSide ].assign( face[ iSide ]->begin_nodes(),
10274 face[ iSide ]->end_nodes() );
10276 fnodes[ iSide ].push_back( fnodes[ iSide ].front());
10280 // check similarity of elements of the sides
10281 if (aResult == SEW_OK && (( face[0] && !face[1] ) || ( !face[0] && face[1] ))) {
10282 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10283 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10284 aResult = ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10287 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10289 break; // do not return because it's necessary to remove tmp faces
10292 // set nodes to merge
10293 // -------------------
10295 if ( face[0] && face[1] ) {
10296 const int nbNodes = face[0]->NbNodes();
10297 if ( nbNodes != face[1]->NbNodes() ) {
10298 MESSAGE("Diff nb of face nodes");
10299 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10300 break; // do not return because it s necessary to remove tmp faces
10302 bool reverse[] = { false, false }; // order of nodes in the link
10303 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10304 // analyse link orientation in faces
10305 int i1 = iLinkNode[ iSide ][ 0 ];
10306 int i2 = iLinkNode[ iSide ][ 1 ];
10307 reverse[ iSide ] = Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1;
10309 int di1 = reverse[0] ? -1 : +1, i1 = iLinkNode[0][1] + di1;
10310 int di2 = reverse[1] ? -1 : +1, i2 = iLinkNode[1][1] + di2;
10311 for ( int i = nbNodes - 2; i > 0; --i, i1 += di1, i2 += di2 )
10313 nReplaceMap.insert ( make_pair ( fnodes[0][ ( i1 + nbNodes ) % nbNodes ],
10314 fnodes[1][ ( i2 + nbNodes ) % nbNodes ]));
10317 // add other links of the faces to linkList
10318 // -----------------------------------------
10320 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
10321 linkID = aLinkID_Gen.GetLinkID( fnodes[0][iNode], fnodes[0][iNode+1] );
10322 pair< set<long>::iterator, bool > iter_isnew = linkIdSet.insert( linkID );
10323 if ( !iter_isnew.second ) { // already in a set: no need to process
10324 linkIdSet.erase( iter_isnew.first );
10326 else // new in set == encountered for the first time: add
10328 const SMDS_MeshNode* n1 = fnodes[0][ iNode ];
10329 const SMDS_MeshNode* n2 = fnodes[0][ iNode + 1];
10330 linkList[0].push_back ( NLink( n1, n2 ));
10331 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10336 if ( faceSetPtr[0]->empty() || faceSetPtr[1]->empty() )
10339 } // loop on link lists
10341 if ( aResult == SEW_OK &&
10342 ( //linkIt[0] != linkList[0].end() ||
10343 !faceSetPtr[0]->empty() || !faceSetPtr[1]->empty() )) {
10344 MESSAGE( (linkIt[0] != linkList[0].end()) <<" "<< (faceSetPtr[0]->empty()) <<
10345 " " << (faceSetPtr[1]->empty()));
10346 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10349 // ====================================================================
10350 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
10351 // ====================================================================
10353 // delete temporary faces
10354 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10355 // while ( tmpFaceIt->more() )
10356 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10357 list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10358 for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10359 aMesh->RemoveElement(*tmpFaceIt);
10361 if ( aResult != SEW_OK)
10364 list< int > nodeIDsToRemove;
10365 vector< const SMDS_MeshNode*> nodes;
10366 ElemFeatures elemType;
10368 // loop on nodes replacement map
10369 TNodeNodeMap::iterator nReplaceMapIt = nReplaceMap.begin(), nnIt;
10370 for ( ; nReplaceMapIt != nReplaceMap.end(); nReplaceMapIt++ )
10371 if ( (*nReplaceMapIt).first != (*nReplaceMapIt).second )
10373 const SMDS_MeshNode* nToRemove = (*nReplaceMapIt).first;
10374 nodeIDsToRemove.push_back( nToRemove->GetID() );
10375 // loop on elements sharing nToRemove
10376 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
10377 while ( invElemIt->more() ) {
10378 const SMDS_MeshElement* e = invElemIt->next();
10379 // get a new suite of nodes: make replacement
10380 int nbReplaced = 0, i = 0, nbNodes = e->NbNodes();
10381 nodes.resize( nbNodes );
10382 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
10383 while ( nIt->more() ) {
10384 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
10385 nnIt = nReplaceMap.find( n );
10386 if ( nnIt != nReplaceMap.end() ) {
10388 n = (*nnIt).second;
10392 // if ( nbReplaced == nbNodes && e->GetType() == SMDSAbs_Face )
10393 // elemIDsToRemove.push_back( e->GetID() );
10397 elemType.Init( e, /*basicOnly=*/false ).SetID( e->GetID() );
10398 aMesh->RemoveElement( e );
10400 if ( SMDS_MeshElement* newElem = this->AddElement( nodes, elemType ))
10402 AddToSameGroups( newElem, e, aMesh );
10403 if ( int aShapeId = e->getshapeId() )
10404 aMesh->SetMeshElementOnShape( newElem, aShapeId );
10410 Remove( nodeIDsToRemove, true );
10415 //================================================================================
10417 * \brief Find corresponding nodes in two sets of faces
10418 * \param theSide1 - first face set
10419 * \param theSide2 - second first face
10420 * \param theFirstNode1 - a boundary node of set 1
10421 * \param theFirstNode2 - a node of set 2 corresponding to theFirstNode1
10422 * \param theSecondNode1 - a boundary node of set 1 linked with theFirstNode1
10423 * \param theSecondNode2 - a node of set 2 corresponding to theSecondNode1
10424 * \param nReplaceMap - output map of corresponding nodes
10425 * \return bool - is a success or not
10427 //================================================================================
10430 //#define DEBUG_MATCHING_NODES
10433 SMESH_MeshEditor::Sew_Error
10434 SMESH_MeshEditor::FindMatchingNodes(set<const SMDS_MeshElement*>& theSide1,
10435 set<const SMDS_MeshElement*>& theSide2,
10436 const SMDS_MeshNode* theFirstNode1,
10437 const SMDS_MeshNode* theFirstNode2,
10438 const SMDS_MeshNode* theSecondNode1,
10439 const SMDS_MeshNode* theSecondNode2,
10440 TNodeNodeMap & nReplaceMap)
10442 set<const SMDS_MeshElement*> * faceSetPtr[] = { &theSide1, &theSide2 };
10444 nReplaceMap.clear();
10445 if ( theFirstNode1 != theFirstNode2 )
10446 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10447 if ( theSecondNode1 != theSecondNode2 )
10448 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10450 set< SMESH_TLink > linkSet; // set of nodes where order of nodes is ignored
10451 linkSet.insert( SMESH_TLink( theFirstNode1, theSecondNode1 ));
10453 list< NLink > linkList[2];
10454 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10455 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10457 // loop on links in linkList; find faces by links and append links
10458 // of the found faces to linkList
10459 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10460 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ ) {
10461 NLink link[] = { *linkIt[0], *linkIt[1] };
10462 if ( linkSet.find( link[0] ) == linkSet.end() )
10465 // by links, find faces in the face sets,
10466 // and find indices of link nodes in the found faces;
10467 // in a face set, there is only one or no face sharing a link
10468 // ---------------------------------------------------------------
10470 const SMDS_MeshElement* face[] = { 0, 0 };
10471 list<const SMDS_MeshNode*> notLinkNodes[2];
10472 //bool reverse[] = { false, false }; // order of notLinkNodes
10474 for ( int iSide = 0; iSide < 2; iSide++ ) // loop on 2 sides
10476 const SMDS_MeshNode* n1 = link[iSide].first;
10477 const SMDS_MeshNode* n2 = link[iSide].second;
10478 set<const SMDS_MeshElement*> * faceSet = faceSetPtr[ iSide ];
10479 set< const SMDS_MeshElement* > facesOfNode1;
10480 for ( int iNode = 0; iNode < 2; iNode++ ) // loop on 2 nodes of a link
10482 // during a loop of the first node, we find all faces around n1,
10483 // during a loop of the second node, we find one face sharing both n1 and n2
10484 const SMDS_MeshNode* n = iNode ? n1 : n2; // a node of a link
10485 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
10486 while ( fIt->more() ) { // loop on faces sharing a node
10487 const SMDS_MeshElement* f = fIt->next();
10488 if (faceSet->find( f ) != faceSet->end() && // f is in face set
10489 ! facesOfNode1.insert( f ).second ) // f encounters twice
10491 if ( face[ iSide ] ) {
10492 MESSAGE( "2 faces per link " );
10493 return ( iSide ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10496 faceSet->erase( f );
10498 // get not link nodes
10499 int nbN = f->NbNodes();
10500 if ( f->IsQuadratic() )
10502 nbNodes[ iSide ] = nbN;
10503 list< const SMDS_MeshNode* > & nodes = notLinkNodes[ iSide ];
10504 int i1 = f->GetNodeIndex( n1 );
10505 int i2 = f->GetNodeIndex( n2 );
10506 int iEnd = nbN, iBeg = -1, iDelta = 1;
10507 bool reverse = ( Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1 );
10509 std::swap( iEnd, iBeg ); iDelta = -1;
10514 if ( i == iEnd ) i = iBeg + iDelta;
10515 if ( i == i1 ) break;
10516 nodes.push_back ( f->GetNode( i ) );
10522 // check similarity of elements of the sides
10523 if (( face[0] && !face[1] ) || ( !face[0] && face[1] )) {
10524 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10525 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10526 return ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10529 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10533 // set nodes to merge
10534 // -------------------
10536 if ( face[0] && face[1] ) {
10537 if ( nbNodes[0] != nbNodes[1] ) {
10538 MESSAGE("Diff nb of face nodes");
10539 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10541 #ifdef DEBUG_MATCHING_NODES
10542 MESSAGE ( " Link 1: " << link[0].first->GetID() <<" "<< link[0].second->GetID()
10543 << " F 1: " << face[0] << "| Link 2: " << link[1].first->GetID() <<" "
10544 << link[1].second->GetID() << " F 2: " << face[1] << " | Bind: " ) ;
10546 int nbN = nbNodes[0];
10548 list<const SMDS_MeshNode*>::iterator n1 = notLinkNodes[0].begin();
10549 list<const SMDS_MeshNode*>::iterator n2 = notLinkNodes[1].begin();
10550 for ( int i = 0 ; i < nbN - 2; ++i ) {
10551 #ifdef DEBUG_MATCHING_NODES
10552 MESSAGE ( (*n1)->GetID() << " to " << (*n2)->GetID() );
10554 nReplaceMap.insert( make_pair( *(n1++), *(n2++) ));
10558 // add other links of the face 1 to linkList
10559 // -----------------------------------------
10561 const SMDS_MeshElement* f0 = face[0];
10562 const SMDS_MeshNode* n1 = f0->GetNode( nbN - 1 );
10563 for ( int i = 0; i < nbN; i++ )
10565 const SMDS_MeshNode* n2 = f0->GetNode( i );
10566 pair< set< SMESH_TLink >::iterator, bool > iter_isnew =
10567 linkSet.insert( SMESH_TLink( n1, n2 ));
10568 if ( !iter_isnew.second ) { // already in a set: no need to process
10569 linkSet.erase( iter_isnew.first );
10571 else // new in set == encountered for the first time: add
10573 #ifdef DEBUG_MATCHING_NODES
10574 MESSAGE ( "Add link 1: " << n1->GetID() << " " << n2->GetID() << " "
10575 << " | link 2: " << nReplaceMap[n1]->GetID() << " " << nReplaceMap[n2]->GetID() << " " );
10577 linkList[0].push_back ( NLink( n1, n2 ));
10578 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10583 } // loop on link lists
10588 //================================================================================
10590 * \brief Create elements equal (on same nodes) to given ones
10591 * \param [in] theElements - a set of elems to duplicate. If it is empty, all
10592 * elements of the uppest dimension are duplicated.
10594 //================================================================================
10596 void SMESH_MeshEditor::DoubleElements( const TIDSortedElemSet& theElements )
10598 ClearLastCreated();
10599 SMESHDS_Mesh* mesh = GetMeshDS();
10601 // get an element type and an iterator over elements
10603 SMDSAbs_ElementType type;
10604 SMDS_ElemIteratorPtr elemIt;
10605 vector< const SMDS_MeshElement* > allElems;
10606 if ( theElements.empty() )
10608 if ( mesh->NbNodes() == 0 )
10610 // get most complex type
10611 SMDSAbs_ElementType types[SMDSAbs_NbElementTypes] = {
10612 SMDSAbs_Volume, SMDSAbs_Face, SMDSAbs_Edge,
10613 SMDSAbs_0DElement, SMDSAbs_Ball, SMDSAbs_Node
10615 for ( int i = 0; i < SMDSAbs_NbElementTypes; ++i )
10616 if ( mesh->GetMeshInfo().NbElements( types[i] ))
10621 // put all elements in the vector <allElems>
10622 allElems.reserve( mesh->GetMeshInfo().NbElements( type ));
10623 elemIt = mesh->elementsIterator( type );
10624 while ( elemIt->more() )
10625 allElems.push_back( elemIt->next());
10626 elemIt = elemSetIterator( allElems );
10630 type = (*theElements.begin())->GetType();
10631 elemIt = elemSetIterator( theElements );
10634 // duplicate elements
10636 ElemFeatures elemType;
10638 vector< const SMDS_MeshNode* > nodes;
10639 while ( elemIt->more() )
10641 const SMDS_MeshElement* elem = elemIt->next();
10642 if ( elem->GetType() != type )
10645 elemType.Init( elem, /*basicOnly=*/false );
10646 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
10648 AddElement( nodes, elemType );
10652 //================================================================================
10654 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10655 \param theElems - the list of elements (edges or faces) to be replicated
10656 The nodes for duplication could be found from these elements
10657 \param theNodesNot - list of nodes to NOT replicate
10658 \param theAffectedElems - the list of elements (cells and edges) to which the
10659 replicated nodes should be associated to.
10660 \return TRUE if operation has been completed successfully, FALSE otherwise
10662 //================================================================================
10664 bool SMESH_MeshEditor::DoubleNodes( const TIDSortedElemSet& theElems,
10665 const TIDSortedElemSet& theNodesNot,
10666 const TIDSortedElemSet& theAffectedElems )
10668 myLastCreatedElems.Clear();
10669 myLastCreatedNodes.Clear();
10671 if ( theElems.size() == 0 )
10674 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10679 TNodeNodeMap anOldNodeToNewNode;
10680 // duplicate elements and nodes
10681 res = doubleNodes( aMeshDS, theElems, theNodesNot, anOldNodeToNewNode, true );
10682 // replce nodes by duplications
10683 res = doubleNodes( aMeshDS, theAffectedElems, theNodesNot, anOldNodeToNewNode, false );
10687 //================================================================================
10689 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10690 \param theMeshDS - mesh instance
10691 \param theElems - the elements replicated or modified (nodes should be changed)
10692 \param theNodesNot - nodes to NOT replicate
10693 \param theNodeNodeMap - relation of old node to new created node
10694 \param theIsDoubleElem - flag os to replicate element or modify
10695 \return TRUE if operation has been completed successfully, FALSE otherwise
10697 //================================================================================
10699 bool SMESH_MeshEditor::doubleNodes(SMESHDS_Mesh* theMeshDS,
10700 const TIDSortedElemSet& theElems,
10701 const TIDSortedElemSet& theNodesNot,
10702 TNodeNodeMap& theNodeNodeMap,
10703 const bool theIsDoubleElem )
10705 MESSAGE("doubleNodes");
10706 // iterate through element and duplicate them (by nodes duplication)
10708 std::vector<const SMDS_MeshNode*> newNodes;
10709 ElemFeatures elemType;
10711 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10712 for ( ; elemItr != theElems.end(); ++elemItr )
10714 const SMDS_MeshElement* anElem = *elemItr;
10718 // duplicate nodes to duplicate element
10719 bool isDuplicate = false;
10720 newNodes.resize( anElem->NbNodes() );
10721 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10723 while ( anIter->more() )
10725 const SMDS_MeshNode* aCurrNode = static_cast<const SMDS_MeshNode*>( anIter->next() );
10726 const SMDS_MeshNode* aNewNode = aCurrNode;
10727 TNodeNodeMap::iterator n2n = theNodeNodeMap.find( aCurrNode );
10728 if ( n2n != theNodeNodeMap.end() )
10730 aNewNode = n2n->second;
10732 else if ( theIsDoubleElem && !theNodesNot.count( aCurrNode ))
10735 aNewNode = theMeshDS->AddNode( aCurrNode->X(), aCurrNode->Y(), aCurrNode->Z() );
10736 copyPosition( aCurrNode, aNewNode );
10737 theNodeNodeMap[ aCurrNode ] = aNewNode;
10738 myLastCreatedNodes.Append( aNewNode );
10740 isDuplicate |= (aCurrNode != aNewNode);
10741 newNodes[ ind++ ] = aNewNode;
10743 if ( !isDuplicate )
10746 if ( theIsDoubleElem )
10747 AddElement( newNodes, elemType.Init( anElem, /*basicOnly=*/false ));
10749 theMeshDS->ChangeElementNodes( anElem, &newNodes[ 0 ], newNodes.size() );
10756 //================================================================================
10758 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10759 \param theNodes - identifiers of nodes to be doubled
10760 \param theModifiedElems - identifiers of elements to be updated by the new (doubled)
10761 nodes. If list of element identifiers is empty then nodes are doubled but
10762 they not assigned to elements
10763 \return TRUE if operation has been completed successfully, FALSE otherwise
10765 //================================================================================
10767 bool SMESH_MeshEditor::DoubleNodes( const std::list< int >& theListOfNodes,
10768 const std::list< int >& theListOfModifiedElems )
10770 MESSAGE("DoubleNodes");
10771 myLastCreatedElems.Clear();
10772 myLastCreatedNodes.Clear();
10774 if ( theListOfNodes.size() == 0 )
10777 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10781 // iterate through nodes and duplicate them
10783 std::map< const SMDS_MeshNode*, const SMDS_MeshNode* > anOldNodeToNewNode;
10785 std::list< int >::const_iterator aNodeIter;
10786 for ( aNodeIter = theListOfNodes.begin(); aNodeIter != theListOfNodes.end(); ++aNodeIter )
10788 int aCurr = *aNodeIter;
10789 SMDS_MeshNode* aNode = (SMDS_MeshNode*)aMeshDS->FindNode( aCurr );
10795 const SMDS_MeshNode* aNewNode = aMeshDS->AddNode( aNode->X(), aNode->Y(), aNode->Z() );
10798 copyPosition( aNode, aNewNode );
10799 anOldNodeToNewNode[ aNode ] = aNewNode;
10800 myLastCreatedNodes.Append( aNewNode );
10804 // Create map of new nodes for modified elements
10806 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> > anElemToNodes;
10808 std::list< int >::const_iterator anElemIter;
10809 for ( anElemIter = theListOfModifiedElems.begin();
10810 anElemIter != theListOfModifiedElems.end(); ++anElemIter )
10812 int aCurr = *anElemIter;
10813 SMDS_MeshElement* anElem = (SMDS_MeshElement*)aMeshDS->FindElement( aCurr );
10817 vector<const SMDS_MeshNode*> aNodeArr( anElem->NbNodes() );
10819 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10821 while ( anIter->more() )
10823 SMDS_MeshNode* aCurrNode = (SMDS_MeshNode*)anIter->next();
10824 if ( aCurr && anOldNodeToNewNode.find( aCurrNode ) != anOldNodeToNewNode.end() )
10826 const SMDS_MeshNode* aNewNode = anOldNodeToNewNode[ aCurrNode ];
10827 aNodeArr[ ind++ ] = aNewNode;
10830 aNodeArr[ ind++ ] = aCurrNode;
10832 anElemToNodes[ anElem ] = aNodeArr;
10835 // Change nodes of elements
10837 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> >::iterator
10838 anElemToNodesIter = anElemToNodes.begin();
10839 for ( ; anElemToNodesIter != anElemToNodes.end(); ++anElemToNodesIter )
10841 const SMDS_MeshElement* anElem = anElemToNodesIter->first;
10842 vector<const SMDS_MeshNode*> aNodeArr = anElemToNodesIter->second;
10845 MESSAGE("ChangeElementNodes");
10846 aMeshDS->ChangeElementNodes( anElem, &aNodeArr[ 0 ], anElem->NbNodes() );
10855 //================================================================================
10857 \brief Check if element located inside shape
10858 \return TRUE if IN or ON shape, FALSE otherwise
10860 //================================================================================
10862 template<class Classifier>
10863 bool isInside(const SMDS_MeshElement* theElem,
10864 Classifier& theClassifier,
10865 const double theTol)
10867 gp_XYZ centerXYZ (0, 0, 0);
10868 SMDS_ElemIteratorPtr aNodeItr = theElem->nodesIterator();
10869 while (aNodeItr->more())
10870 centerXYZ += SMESH_TNodeXYZ(cast2Node( aNodeItr->next()));
10872 gp_Pnt aPnt = centerXYZ / theElem->NbNodes();
10873 theClassifier.Perform(aPnt, theTol);
10874 TopAbs_State aState = theClassifier.State();
10875 return (aState == TopAbs_IN || aState == TopAbs_ON );
10878 //================================================================================
10880 * \brief Classifier of the 3D point on the TopoDS_Face
10881 * with interaface suitable for isInside()
10883 //================================================================================
10885 struct _FaceClassifier
10887 Extrema_ExtPS _extremum;
10888 BRepAdaptor_Surface _surface;
10889 TopAbs_State _state;
10891 _FaceClassifier(const TopoDS_Face& face):_extremum(),_surface(face),_state(TopAbs_OUT)
10893 _extremum.Initialize( _surface,
10894 _surface.FirstUParameter(), _surface.LastUParameter(),
10895 _surface.FirstVParameter(), _surface.LastVParameter(),
10896 _surface.Tolerance(), _surface.Tolerance() );
10898 void Perform(const gp_Pnt& aPnt, double theTol)
10901 _state = TopAbs_OUT;
10902 _extremum.Perform(aPnt);
10903 if ( _extremum.IsDone() )
10904 for ( int iSol = 1; iSol <= _extremum.NbExt() && _state == TopAbs_OUT; ++iSol)
10905 _state = ( _extremum.SquareDistance(iSol) <= theTol ? TopAbs_IN : TopAbs_OUT );
10907 TopAbs_State State() const
10914 //================================================================================
10916 \brief Identify the elements that will be affected by node duplication (actual duplication is not performed).
10917 This method is the first step of DoubleNodeElemGroupsInRegion.
10918 \param theElems - list of groups of elements (edges or faces) to be replicated
10919 \param theNodesNot - list of groups of nodes not to replicated
10920 \param theShape - shape to detect affected elements (element which geometric center
10921 located on or inside shape). If the shape is null, detection is done on faces orientations
10922 (select elements with a gravity center on the side given by faces normals).
10923 This mode (null shape) is faster, but works only when theElems are faces, with coherents orientations.
10924 The replicated nodes should be associated to affected elements.
10925 \return groups of affected elements
10926 \sa DoubleNodeElemGroupsInRegion()
10928 //================================================================================
10930 bool SMESH_MeshEditor::AffectedElemGroupsInRegion( const TIDSortedElemSet& theElems,
10931 const TIDSortedElemSet& theNodesNot,
10932 const TopoDS_Shape& theShape,
10933 TIDSortedElemSet& theAffectedElems)
10935 if ( theShape.IsNull() )
10937 std::set<const SMDS_MeshNode*> alreadyCheckedNodes;
10938 std::set<const SMDS_MeshElement*> alreadyCheckedElems;
10939 std::set<const SMDS_MeshElement*> edgesToCheck;
10940 alreadyCheckedNodes.clear();
10941 alreadyCheckedElems.clear();
10942 edgesToCheck.clear();
10944 // --- iterates on elements to be replicated and get elements by back references from their nodes
10946 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10948 for ( ielem=1; elemItr != theElems.end(); ++elemItr )
10950 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
10951 if (!anElem || (anElem->GetType() != SMDSAbs_Face))
10954 SMESH_MeshAlgos::FaceNormal( anElem, normal, /*normalized=*/true );
10955 MESSAGE("element " << ielem++ << " normal " << normal.X() << " " << normal.Y() << " " << normal.Z());
10956 std::set<const SMDS_MeshNode*> nodesElem;
10958 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
10959 while ( nodeItr->more() )
10961 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10962 nodesElem.insert(aNode);
10964 std::set<const SMDS_MeshNode*>::iterator nodit = nodesElem.begin();
10965 for (; nodit != nodesElem.end(); nodit++)
10967 MESSAGE(" noeud ");
10968 const SMDS_MeshNode* aNode = *nodit;
10969 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
10971 if (alreadyCheckedNodes.find(aNode) != alreadyCheckedNodes.end())
10973 alreadyCheckedNodes.insert(aNode);
10974 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
10975 while ( backElemItr->more() )
10977 MESSAGE(" backelem ");
10978 const SMDS_MeshElement* curElem = backElemItr->next();
10979 if (alreadyCheckedElems.find(curElem) != alreadyCheckedElems.end())
10981 if (theElems.find(curElem) != theElems.end())
10983 alreadyCheckedElems.insert(curElem);
10984 double x=0, y=0, z=0;
10986 SMDS_ElemIteratorPtr nodeItr2 = curElem->nodesIterator();
10987 while ( nodeItr2->more() )
10989 const SMDS_MeshNode* anotherNode = cast2Node(nodeItr2->next());
10990 x += anotherNode->X();
10991 y += anotherNode->Y();
10992 z += anotherNode->Z();
10996 p.SetCoord( x/nb -aNode->X(),
10998 z/nb -aNode->Z() );
10999 MESSAGE(" check " << p.X() << " " << p.Y() << " " << p.Z());
11002 MESSAGE(" --- inserted")
11003 theAffectedElems.insert( curElem );
11005 else if (curElem->GetType() == SMDSAbs_Edge)
11006 edgesToCheck.insert(curElem);
11010 // --- add also edges lying on the set of faces (all nodes in alreadyCheckedNodes)
11011 std::set<const SMDS_MeshElement*>::iterator eit = edgesToCheck.begin();
11012 for( ; eit != edgesToCheck.end(); eit++)
11014 bool onside = true;
11015 const SMDS_MeshElement* anEdge = *eit;
11016 SMDS_ElemIteratorPtr nodeItr = anEdge->nodesIterator();
11017 while ( nodeItr->more() )
11019 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
11020 if (alreadyCheckedNodes.find(aNode) == alreadyCheckedNodes.end())
11028 MESSAGE(" --- edge onside inserted")
11029 theAffectedElems.insert(anEdge);
11035 const double aTol = Precision::Confusion();
11036 auto_ptr< BRepClass3d_SolidClassifier> bsc3d;
11037 auto_ptr<_FaceClassifier> aFaceClassifier;
11038 if ( theShape.ShapeType() == TopAbs_SOLID )
11040 bsc3d.reset( new BRepClass3d_SolidClassifier(theShape));;
11041 bsc3d->PerformInfinitePoint(aTol);
11043 else if (theShape.ShapeType() == TopAbs_FACE )
11045 aFaceClassifier.reset( new _FaceClassifier(TopoDS::Face(theShape)));
11048 // iterates on indicated elements and get elements by back references from their nodes
11049 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
11051 for ( ielem = 1; elemItr != theElems.end(); ++elemItr )
11053 MESSAGE("element " << ielem++);
11054 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
11057 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
11058 while ( nodeItr->more() )
11060 MESSAGE(" noeud ");
11061 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
11062 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
11064 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
11065 while ( backElemItr->more() )
11067 MESSAGE(" backelem ");
11068 const SMDS_MeshElement* curElem = backElemItr->next();
11069 if ( curElem && theElems.find(curElem) == theElems.end() &&
11071 isInside( curElem, *bsc3d, aTol ) :
11072 isInside( curElem, *aFaceClassifier, aTol )))
11073 theAffectedElems.insert( curElem );
11081 //================================================================================
11083 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
11084 \param theElems - group of of elements (edges or faces) to be replicated
11085 \param theNodesNot - group of nodes not to replicate
11086 \param theShape - shape to detect affected elements (element which geometric center
11087 located on or inside shape).
11088 The replicated nodes should be associated to affected elements.
11089 \return TRUE if operation has been completed successfully, FALSE otherwise
11091 //================================================================================
11093 bool SMESH_MeshEditor::DoubleNodesInRegion( const TIDSortedElemSet& theElems,
11094 const TIDSortedElemSet& theNodesNot,
11095 const TopoDS_Shape& theShape )
11097 if ( theShape.IsNull() )
11100 const double aTol = Precision::Confusion();
11101 auto_ptr< BRepClass3d_SolidClassifier> bsc3d;
11102 auto_ptr<_FaceClassifier> aFaceClassifier;
11103 if ( theShape.ShapeType() == TopAbs_SOLID )
11105 bsc3d.reset( new BRepClass3d_SolidClassifier(theShape));;
11106 bsc3d->PerformInfinitePoint(aTol);
11108 else if (theShape.ShapeType() == TopAbs_FACE )
11110 aFaceClassifier.reset( new _FaceClassifier(TopoDS::Face(theShape)));
11113 // iterates on indicated elements and get elements by back references from their nodes
11114 TIDSortedElemSet anAffected;
11115 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
11116 for ( ; elemItr != theElems.end(); ++elemItr )
11118 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
11122 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
11123 while ( nodeItr->more() )
11125 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
11126 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
11128 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
11129 while ( backElemItr->more() )
11131 const SMDS_MeshElement* curElem = backElemItr->next();
11132 if ( curElem && theElems.find(curElem) == theElems.end() &&
11134 isInside( curElem, *bsc3d, aTol ) :
11135 isInside( curElem, *aFaceClassifier, aTol )))
11136 anAffected.insert( curElem );
11140 return DoubleNodes( theElems, theNodesNot, anAffected );
11144 * \brief compute an oriented angle between two planes defined by four points.
11145 * The vector (p0,p1) defines the intersection of the 2 planes (p0,p1,g1) and (p0,p1,g2)
11146 * @param p0 base of the rotation axe
11147 * @param p1 extremity of the rotation axe
11148 * @param g1 belongs to the first plane
11149 * @param g2 belongs to the second plane
11151 double SMESH_MeshEditor::OrientedAngle(const gp_Pnt& p0, const gp_Pnt& p1, const gp_Pnt& g1, const gp_Pnt& g2)
11153 // MESSAGE(" p0: " << p0.X() << " " << p0.Y() << " " << p0.Z());
11154 // MESSAGE(" p1: " << p1.X() << " " << p1.Y() << " " << p1.Z());
11155 // MESSAGE(" g1: " << g1.X() << " " << g1.Y() << " " << g1.Z());
11156 // MESSAGE(" g2: " << g2.X() << " " << g2.Y() << " " << g2.Z());
11157 gp_Vec vref(p0, p1);
11160 gp_Vec n1 = vref.Crossed(v1);
11161 gp_Vec n2 = vref.Crossed(v2);
11163 return n2.AngleWithRef(n1, vref);
11165 catch ( Standard_Failure ) {
11167 return Max( v1.Magnitude(), v2.Magnitude() );
11171 * \brief Double nodes on shared faces between groups of volumes and create flat elements on demand.
11172 * The list of groups must contain at least two groups. The groups have to be disjoint: no common element into two different groups.
11173 * The nodes of the internal faces at the boundaries of the groups are doubled. Optionally, the internal faces are replaced by flat elements.
11174 * Triangles are transformed into prisms, and quadrangles into hexahedrons.
11175 * The flat elements are stored in groups of volumes. These groups are named according to the position of the group in the list:
11176 * the group j_n_p is the group of the flat elements that are built between the group #n and the group #p in the list.
11177 * If there is no shared faces between the group #n and the group #p in the list, the group j_n_p is not created.
11178 * All the flat elements are gathered into the group named "joints3D" (or "joints2D" in 2D situation).
11179 * The flat element of the multiple junctions between the simple junction are stored in a group named "jointsMultiples".
11180 * \param theElems - list of groups of volumes, where a group of volume is a set of
11181 * SMDS_MeshElements sorted by Id.
11182 * \param createJointElems - if TRUE, create the elements
11183 * \param onAllBoundaries - if TRUE, the nodes and elements are also created on
11184 * the boundary between \a theDomains and the rest mesh
11185 * \return TRUE if operation has been completed successfully, FALSE otherwise
11187 bool SMESH_MeshEditor::DoubleNodesOnGroupBoundaries( const std::vector<TIDSortedElemSet>& theElems,
11188 bool createJointElems,
11189 bool onAllBoundaries)
11191 MESSAGE("----------------------------------------------");
11192 MESSAGE("SMESH_MeshEditor::doubleNodesOnGroupBoundaries");
11193 MESSAGE("----------------------------------------------");
11195 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11196 meshDS->BuildDownWardConnectivity(true);
11198 SMDS_UnstructuredGrid *grid = meshDS->getGrid();
11200 // --- build the list of faces shared by 2 domains (group of elements), with their domain and volume indexes
11201 // build the list of cells with only a node or an edge on the border, with their domain and volume indexes
11202 // build the list of nodes shared by 2 or more domains, with their domain indexes
11204 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceDomains; // face --> (id domain --> id volume)
11205 std::map<int,int>celldom; // cell vtkId --> domain
11206 std::map<DownIdType, std::map<int,int>, DownIdCompare> cellDomains; // oldNode --> (id domain --> id cell)
11207 std::map<int, std::map<int,int> > nodeDomains; // oldId --> (domainId --> newId)
11208 faceDomains.clear();
11210 cellDomains.clear();
11211 nodeDomains.clear();
11212 std::map<int,int> emptyMap;
11213 std::set<int> emptySet;
11216 MESSAGE(".. Number of domains :"<<theElems.size());
11218 TIDSortedElemSet theRestDomElems;
11219 const int iRestDom = -1;
11220 const int idom0 = onAllBoundaries ? iRestDom : 0;
11221 const int nbDomains = theElems.size();
11223 // Check if the domains do not share an element
11224 for (int idom = 0; idom < nbDomains-1; idom++)
11226 // MESSAGE("... Check of domain #" << idom);
11227 const TIDSortedElemSet& domain = theElems[idom];
11228 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11229 for (; elemItr != domain.end(); ++elemItr)
11231 const SMDS_MeshElement* anElem = *elemItr;
11232 int idombisdeb = idom + 1 ;
11233 for (int idombis = idombisdeb; idombis < theElems.size(); idombis++) // check if the element belongs to a domain further in the list
11235 const TIDSortedElemSet& domainbis = theElems[idombis];
11236 if ( domainbis.count(anElem) )
11238 MESSAGE(".... Domain #" << idom);
11239 MESSAGE(".... Domain #" << idombis);
11240 throw SALOME_Exception("The domains are not disjoint.");
11247 for (int idom = 0; idom < nbDomains; idom++)
11250 // --- build a map (face to duplicate --> volume to modify)
11251 // with all the faces shared by 2 domains (group of elements)
11252 // and corresponding volume of this domain, for each shared face.
11253 // a volume has a face shared by 2 domains if it has a neighbor which is not in his domain.
11255 MESSAGE("... Neighbors of domain #" << idom);
11256 const TIDSortedElemSet& domain = theElems[idom];
11257 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11258 for (; elemItr != domain.end(); ++elemItr)
11260 const SMDS_MeshElement* anElem = *elemItr;
11263 int vtkId = anElem->getVtkId();
11264 //MESSAGE(" vtkId " << vtkId << " smdsId " << anElem->GetID());
11265 int neighborsVtkIds[NBMAXNEIGHBORS];
11266 int downIds[NBMAXNEIGHBORS];
11267 unsigned char downTypes[NBMAXNEIGHBORS];
11268 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
11269 for (int n = 0; n < nbNeighbors; n++)
11271 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
11272 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
11273 if (elem && ! domain.count(elem)) // neighbor is in another domain : face is shared
11276 for (int idombis = 0; idombis < theElems.size() && !ok; idombis++) // check if the neighbor belongs to another domain of the list
11278 // MESSAGE("Domain " << idombis);
11279 const TIDSortedElemSet& domainbis = theElems[idombis];
11280 if ( domainbis.count(elem)) ok = true ; // neighbor is in a correct domain : face is kept
11282 if ( ok || onAllBoundaries ) // the characteristics of the face is stored
11284 DownIdType face(downIds[n], downTypes[n]);
11285 if (!faceDomains[face].count(idom))
11287 faceDomains[face][idom] = vtkId; // volume associated to face in this domain
11288 celldom[vtkId] = idom;
11289 //MESSAGE(" cell with a border " << vtkId << " domain " << idom);
11293 theRestDomElems.insert( elem );
11294 faceDomains[face][iRestDom] = neighborsVtkIds[n];
11295 celldom[neighborsVtkIds[n]] = iRestDom;
11303 //MESSAGE("Number of shared faces " << faceDomains.size());
11304 std::map<DownIdType, std::map<int, int>, DownIdCompare>::iterator itface;
11306 // --- explore the shared faces domain by domain,
11307 // explore the nodes of the face and see if they belong to a cell in the domain,
11308 // which has only a node or an edge on the border (not a shared face)
11310 for (int idomain = idom0; idomain < nbDomains; idomain++)
11312 //MESSAGE("Domain " << idomain);
11313 const TIDSortedElemSet& domain = (idomain == iRestDom) ? theRestDomElems : theElems[idomain];
11314 itface = faceDomains.begin();
11315 for (; itface != faceDomains.end(); ++itface)
11317 const std::map<int, int>& domvol = itface->second;
11318 if (!domvol.count(idomain))
11320 DownIdType face = itface->first;
11321 //MESSAGE(" --- face " << face.cellId);
11322 std::set<int> oldNodes;
11324 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11325 std::set<int>::iterator itn = oldNodes.begin();
11326 for (; itn != oldNodes.end(); ++itn)
11329 //MESSAGE(" node " << oldId);
11330 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11331 for (int i=0; i<l.ncells; i++)
11333 int vtkId = l.cells[i];
11334 const SMDS_MeshElement* anElem = GetMeshDS()->FindElement(GetMeshDS()->fromVtkToSmds(vtkId));
11335 if (!domain.count(anElem))
11337 int vtkType = grid->GetCellType(vtkId);
11338 int downId = grid->CellIdToDownId(vtkId);
11341 MESSAGE("doubleNodesOnGroupBoundaries: internal algorithm problem");
11342 continue; // not OK at this stage of the algorithm:
11343 //no cells created after BuildDownWardConnectivity
11345 DownIdType aCell(downId, vtkType);
11346 cellDomains[aCell][idomain] = vtkId;
11347 celldom[vtkId] = idomain;
11348 //MESSAGE(" cell " << vtkId << " domain " << idomain);
11354 // --- explore the shared faces domain by domain, to duplicate the nodes in a coherent way
11355 // for each shared face, get the nodes
11356 // for each node, for each domain of the face, create a clone of the node
11358 // --- edges at the intersection of 3 or 4 domains, with the order of domains to build
11359 // junction elements of type prism or hexa. the key is the pair of nodesId (lower first)
11360 // the value is the ordered domain ids. (more than 4 domains not taken into account)
11362 std::map<std::vector<int>, std::vector<int> > edgesMultiDomains; // nodes of edge --> ordered domains
11363 std::map<int, std::vector<int> > mutipleNodes; // nodes multi domains with domain order
11364 std::map<int, std::vector<int> > mutipleNodesToFace; // nodes multi domains with domain order to transform in Face (junction between 3 or more 2D domains)
11366 MESSAGE(".. Duplication of the nodes");
11367 for (int idomain = idom0; idomain < nbDomains; idomain++)
11369 itface = faceDomains.begin();
11370 for (; itface != faceDomains.end(); ++itface)
11372 const std::map<int, int>& domvol = itface->second;
11373 if (!domvol.count(idomain))
11375 DownIdType face = itface->first;
11376 //MESSAGE(" --- face " << face.cellId);
11377 std::set<int> oldNodes;
11379 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11380 std::set<int>::iterator itn = oldNodes.begin();
11381 for (; itn != oldNodes.end(); ++itn)
11384 if (nodeDomains[oldId].empty())
11386 nodeDomains[oldId][idomain] = oldId; // keep the old node in the first domain
11387 //MESSAGE("-+-+-b oldNode " << oldId << " domain " << idomain);
11389 std::map<int, int>::const_iterator itdom = domvol.begin();
11390 for (; itdom != domvol.end(); ++itdom)
11392 int idom = itdom->first;
11393 //MESSAGE(" domain " << idom);
11394 if (!nodeDomains[oldId].count(idom)) // --- node to clone
11396 if (nodeDomains[oldId].size() >= 2) // a multiple node
11398 vector<int> orderedDoms;
11399 //MESSAGE("multiple node " << oldId);
11400 if (mutipleNodes.count(oldId))
11401 orderedDoms = mutipleNodes[oldId];
11404 map<int,int>::iterator it = nodeDomains[oldId].begin();
11405 for (; it != nodeDomains[oldId].end(); ++it)
11406 orderedDoms.push_back(it->first);
11408 orderedDoms.push_back(idom); // TODO order ==> push_front or back
11409 //stringstream txt;
11410 //for (int i=0; i<orderedDoms.size(); i++)
11411 // txt << orderedDoms[i] << " ";
11412 //MESSAGE("orderedDoms " << txt.str());
11413 mutipleNodes[oldId] = orderedDoms;
11415 double *coords = grid->GetPoint(oldId);
11416 SMDS_MeshNode *newNode = meshDS->AddNode(coords[0], coords[1], coords[2]);
11417 copyPosition( meshDS->FindNodeVtk( oldId ), newNode );
11418 int newId = newNode->getVtkId();
11419 nodeDomains[oldId][idom] = newId; // cloned node for other domains
11420 //MESSAGE("-+-+-c oldNode " << oldId << " domain " << idomain << " newNode " << newId << " domain " << idom << " size=" <<nodeDomains[oldId].size());
11427 MESSAGE(".. Creation of elements");
11428 for (int idomain = idom0; idomain < nbDomains; idomain++)
11430 itface = faceDomains.begin();
11431 for (; itface != faceDomains.end(); ++itface)
11433 std::map<int, int> domvol = itface->second;
11434 if (!domvol.count(idomain))
11436 DownIdType face = itface->first;
11437 //MESSAGE(" --- face " << face.cellId);
11438 std::set<int> oldNodes;
11440 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11441 int nbMultipleNodes = 0;
11442 std::set<int>::iterator itn = oldNodes.begin();
11443 for (; itn != oldNodes.end(); ++itn)
11446 if (mutipleNodes.count(oldId))
11449 if (nbMultipleNodes > 1) // check if an edge of the face is shared between 3 or more domains
11451 //MESSAGE("multiple Nodes detected on a shared face");
11452 int downId = itface->first.cellId;
11453 unsigned char cellType = itface->first.cellType;
11454 // --- shared edge or shared face ?
11455 if ((cellType == VTK_LINE) || (cellType == VTK_QUADRATIC_EDGE)) // shared edge (between two faces)
11458 int nbNodes = grid->getDownArray(cellType)->getNodes(downId, nodes);
11459 for (int i=0; i< nbNodes; i=i+nbNodes-1) // i=0 , i=nbNodes-1
11460 if (mutipleNodes.count(nodes[i]))
11461 if (!mutipleNodesToFace.count(nodes[i]))
11462 mutipleNodesToFace[nodes[i]] = mutipleNodes[nodes[i]];
11464 else // shared face (between two volumes)
11466 int nbEdges = grid->getDownArray(cellType)->getNumberOfDownCells(downId);
11467 const int* downEdgeIds = grid->getDownArray(cellType)->getDownCells(downId);
11468 const unsigned char* edgeType = grid->getDownArray(cellType)->getDownTypes(downId);
11469 for (int ie =0; ie < nbEdges; ie++)
11472 int nbNodes = grid->getDownArray(edgeType[ie])->getNodes(downEdgeIds[ie], nodes);
11473 if (mutipleNodes.count(nodes[0]) && mutipleNodes.count(nodes[nbNodes-1]))
11475 vector<int> vn0 = mutipleNodes[nodes[0]];
11476 vector<int> vn1 = mutipleNodes[nodes[nbNodes - 1]];
11478 for (int i0 = 0; i0 < vn0.size(); i0++)
11479 for (int i1 = 0; i1 < vn1.size(); i1++)
11480 if (vn0[i0] == vn1[i1])
11481 doms.push_back(vn0[i0]);
11482 if (doms.size() >2)
11484 //MESSAGE(" detect edgesMultiDomains " << nodes[0] << " " << nodes[nbNodes - 1]);
11485 double *coords = grid->GetPoint(nodes[0]);
11486 gp_Pnt p0(coords[0], coords[1], coords[2]);
11487 coords = grid->GetPoint(nodes[nbNodes - 1]);
11488 gp_Pnt p1(coords[0], coords[1], coords[2]);
11490 int vtkVolIds[1000]; // an edge can belong to a lot of volumes
11491 map<int, SMDS_VtkVolume*> domvol; // domain --> a volume with the edge
11492 map<int, double> angleDom; // oriented angles between planes defined by edge and volume centers
11493 int nbvol = grid->GetParentVolumes(vtkVolIds, downEdgeIds[ie], edgeType[ie]);
11494 for (int id=0; id < doms.size(); id++)
11496 int idom = doms[id];
11497 const TIDSortedElemSet& domain = (idom == iRestDom) ? theRestDomElems : theElems[idom];
11498 for (int ivol=0; ivol<nbvol; ivol++)
11500 int smdsId = meshDS->fromVtkToSmds(vtkVolIds[ivol]);
11501 SMDS_MeshElement* elem = (SMDS_MeshElement*)meshDS->FindElement(smdsId);
11502 if (domain.count(elem))
11504 SMDS_VtkVolume* svol = dynamic_cast<SMDS_VtkVolume*>(elem);
11505 domvol[idom] = svol;
11506 //MESSAGE(" domain " << idom << " volume " << elem->GetID());
11508 vtkIdType npts = 0;
11509 vtkIdType* pts = 0;
11510 grid->GetCellPoints(vtkVolIds[ivol], npts, pts);
11511 SMDS_VtkVolume::gravityCenter(grid, pts, npts, values);
11514 gref.SetXYZ(gp_XYZ(values[0], values[1], values[2]));
11515 angleDom[idom] = 0;
11519 gp_Pnt g(values[0], values[1], values[2]);
11520 angleDom[idom] = OrientedAngle(p0, p1, gref, g); // -pi<angle<+pi
11521 //MESSAGE(" angle=" << angleDom[idom]);
11527 map<double, int> sortedDom; // sort domains by angle
11528 for (map<int, double>::iterator ia = angleDom.begin(); ia != angleDom.end(); ++ia)
11529 sortedDom[ia->second] = ia->first;
11530 vector<int> vnodes;
11532 for (map<double, int>::iterator ib = sortedDom.begin(); ib != sortedDom.end(); ++ib)
11534 vdom.push_back(ib->second);
11535 //MESSAGE(" ordered domain " << ib->second << " angle " << ib->first);
11537 for (int ino = 0; ino < nbNodes; ino++)
11538 vnodes.push_back(nodes[ino]);
11539 edgesMultiDomains[vnodes] = vdom; // nodes vector --> ordered domains
11548 // --- iterate on shared faces (volumes to modify, face to extrude)
11549 // get node id's of the face (id SMDS = id VTK)
11550 // create flat element with old and new nodes if requested
11552 // --- new quad nodes on flat quad elements: oldId --> ((domain1 X domain2) --> newId)
11553 // (domain1 X domain2) = domain1 + MAXINT*domain2
11555 std::map<int, std::map<long,int> > nodeQuadDomains;
11556 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11558 MESSAGE(".. Creation of elements: simple junction");
11559 if (createJointElems)
11562 string joints2DName = "joints2D";
11563 mapOfJunctionGroups[joints2DName] = this->myMesh->AddGroup(SMDSAbs_Face, joints2DName.c_str(), idg);
11564 SMESHDS_Group *joints2DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints2DName]->GetGroupDS());
11565 string joints3DName = "joints3D";
11566 mapOfJunctionGroups[joints3DName] = this->myMesh->AddGroup(SMDSAbs_Volume, joints3DName.c_str(), idg);
11567 SMESHDS_Group *joints3DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints3DName]->GetGroupDS());
11569 itface = faceDomains.begin();
11570 for (; itface != faceDomains.end(); ++itface)
11572 DownIdType face = itface->first;
11573 std::set<int> oldNodes;
11574 std::set<int>::iterator itn;
11576 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11578 std::map<int, int> domvol = itface->second;
11579 std::map<int, int>::iterator itdom = domvol.begin();
11580 int dom1 = itdom->first;
11581 int vtkVolId = itdom->second;
11583 int dom2 = itdom->first;
11584 SMDS_MeshCell *vol = grid->extrudeVolumeFromFace(vtkVolId, dom1, dom2, oldNodes, nodeDomains,
11586 stringstream grpname;
11589 grpname << dom1 << "_" << dom2;
11591 grpname << dom2 << "_" << dom1;
11592 string namegrp = grpname.str();
11593 if (!mapOfJunctionGroups.count(namegrp))
11594 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(vol->GetType(), namegrp.c_str(), idg);
11595 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11597 sgrp->Add(vol->GetID());
11598 if (vol->GetType() == SMDSAbs_Volume)
11599 joints3DGrp->Add(vol->GetID());
11600 else if (vol->GetType() == SMDSAbs_Face)
11601 joints2DGrp->Add(vol->GetID());
11605 // --- create volumes on multiple domain intersection if requested
11606 // iterate on mutipleNodesToFace
11607 // iterate on edgesMultiDomains
11609 MESSAGE(".. Creation of elements: multiple junction");
11610 if (createJointElems)
11612 // --- iterate on mutipleNodesToFace
11614 std::map<int, std::vector<int> >::iterator itn = mutipleNodesToFace.begin();
11615 for (; itn != mutipleNodesToFace.end(); ++itn)
11617 int node = itn->first;
11618 vector<int> orderDom = itn->second;
11619 vector<vtkIdType> orderedNodes;
11620 for (int idom = 0; idom <orderDom.size(); idom++)
11621 orderedNodes.push_back( nodeDomains[node][orderDom[idom]] );
11622 SMDS_MeshFace* face = this->GetMeshDS()->AddFaceFromVtkIds(orderedNodes);
11624 stringstream grpname;
11626 grpname << 0 << "_" << 0;
11628 string namegrp = grpname.str();
11629 if (!mapOfJunctionGroups.count(namegrp))
11630 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Face, namegrp.c_str(), idg);
11631 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11633 sgrp->Add(face->GetID());
11636 // --- iterate on edgesMultiDomains
11638 std::map<std::vector<int>, std::vector<int> >::iterator ite = edgesMultiDomains.begin();
11639 for (; ite != edgesMultiDomains.end(); ++ite)
11641 vector<int> nodes = ite->first;
11642 vector<int> orderDom = ite->second;
11643 vector<vtkIdType> orderedNodes;
11644 if (nodes.size() == 2)
11646 //MESSAGE(" use edgesMultiDomains " << nodes[0] << " " << nodes[1]);
11647 for (int ino=0; ino < nodes.size(); ino++)
11648 if (orderDom.size() == 3)
11649 for (int idom = 0; idom <orderDom.size(); idom++)
11650 orderedNodes.push_back( nodeDomains[nodes[ino]][orderDom[idom]] );
11652 for (int idom = orderDom.size()-1; idom >=0; idom--)
11653 orderedNodes.push_back( nodeDomains[nodes[ino]][orderDom[idom]] );
11654 SMDS_MeshVolume* vol = this->GetMeshDS()->AddVolumeFromVtkIds(orderedNodes);
11657 string namegrp = "jointsMultiples";
11658 if (!mapOfJunctionGroups.count(namegrp))
11659 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11660 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11662 sgrp->Add(vol->GetID());
11666 INFOS("Quadratic multiple joints not implemented");
11667 // TODO quadratic nodes
11672 // --- list the explicit faces and edges of the mesh that need to be modified,
11673 // i.e. faces and edges built with one or more duplicated nodes.
11674 // associate these faces or edges to their corresponding domain.
11675 // only the first domain found is kept when a face or edge is shared
11677 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceOrEdgeDom; // cellToModify --> (id domain --> id cell)
11678 std::map<int,int> feDom; // vtk id of cell to modify --> id domain
11679 faceOrEdgeDom.clear();
11682 MESSAGE(".. Modification of elements");
11683 for (int idomain = idom0; idomain < nbDomains; idomain++)
11685 std::map<int, std::map<int, int> >::const_iterator itnod = nodeDomains.begin();
11686 for (; itnod != nodeDomains.end(); ++itnod)
11688 int oldId = itnod->first;
11689 //MESSAGE(" node " << oldId);
11690 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11691 for (int i = 0; i < l.ncells; i++)
11693 int vtkId = l.cells[i];
11694 int vtkType = grid->GetCellType(vtkId);
11695 int downId = grid->CellIdToDownId(vtkId);
11697 continue; // new cells: not to be modified
11698 DownIdType aCell(downId, vtkType);
11699 int volParents[1000];
11700 int nbvol = grid->GetParentVolumes(volParents, vtkId);
11701 for (int j = 0; j < nbvol; j++)
11702 if (celldom.count(volParents[j]) && (celldom[volParents[j]] == idomain))
11703 if (!feDom.count(vtkId))
11705 feDom[vtkId] = idomain;
11706 faceOrEdgeDom[aCell] = emptyMap;
11707 faceOrEdgeDom[aCell][idomain] = vtkId; // affect face or edge to the first domain only
11708 //MESSAGE("affect cell " << this->GetMeshDS()->fromVtkToSmds(vtkId) << " domain " << idomain
11709 // << " type " << vtkType << " downId " << downId);
11715 // --- iterate on shared faces (volumes to modify, face to extrude)
11716 // get node id's of the face
11717 // replace old nodes by new nodes in volumes, and update inverse connectivity
11719 std::map<DownIdType, std::map<int,int>, DownIdCompare>* maps[3] = {&faceDomains, &cellDomains, &faceOrEdgeDom};
11720 for (int m=0; m<3; m++)
11722 std::map<DownIdType, std::map<int,int>, DownIdCompare>* amap = maps[m];
11723 itface = (*amap).begin();
11724 for (; itface != (*amap).end(); ++itface)
11726 DownIdType face = itface->first;
11727 std::set<int> oldNodes;
11728 std::set<int>::iterator itn;
11730 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11731 //MESSAGE("examine cell, downId " << face.cellId << " type " << int(face.cellType));
11732 std::map<int, int> localClonedNodeIds;
11734 std::map<int, int> domvol = itface->second;
11735 std::map<int, int>::iterator itdom = domvol.begin();
11736 for (; itdom != domvol.end(); ++itdom)
11738 int idom = itdom->first;
11739 int vtkVolId = itdom->second;
11740 //MESSAGE("modify nodes of cell " << this->GetMeshDS()->fromVtkToSmds(vtkVolId) << " domain " << idom);
11741 localClonedNodeIds.clear();
11742 for (itn = oldNodes.begin(); itn != oldNodes.end(); ++itn)
11745 if (nodeDomains[oldId].count(idom))
11747 localClonedNodeIds[oldId] = nodeDomains[oldId][idom];
11748 //MESSAGE(" node " << oldId << " --> " << localClonedNodeIds[oldId]);
11751 meshDS->ModifyCellNodes(vtkVolId, localClonedNodeIds);
11756 // Remove empty groups (issue 0022812)
11757 std::map<std::string, SMESH_Group*>::iterator name_group = mapOfJunctionGroups.begin();
11758 for ( ; name_group != mapOfJunctionGroups.end(); ++name_group )
11760 if ( name_group->second && name_group->second->GetGroupDS()->IsEmpty() )
11761 myMesh->RemoveGroup( name_group->second->GetGroupDS()->GetID() );
11764 meshDS->CleanDownWardConnectivity(); // Mesh has been modified, downward connectivity is no more usable, free memory
11765 grid->BuildLinks();
11773 * \brief Double nodes on some external faces and create flat elements.
11774 * Flat elements are mainly used by some types of mechanic calculations.
11776 * Each group of the list must be constituted of faces.
11777 * Triangles are transformed in prisms, and quadrangles in hexahedrons.
11778 * @param theElems - list of groups of faces, where a group of faces is a set of
11779 * SMDS_MeshElements sorted by Id.
11780 * @return TRUE if operation has been completed successfully, FALSE otherwise
11782 bool SMESH_MeshEditor::CreateFlatElementsOnFacesGroups(const std::vector<TIDSortedElemSet>& theElems)
11784 MESSAGE("-------------------------------------------------");
11785 MESSAGE("SMESH_MeshEditor::CreateFlatElementsOnFacesGroups");
11786 MESSAGE("-------------------------------------------------");
11788 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11790 // --- For each group of faces
11791 // duplicate the nodes, create a flat element based on the face
11792 // replace the nodes of the faces by their clones
11794 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> clonedNodes;
11795 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> intermediateNodes;
11796 clonedNodes.clear();
11797 intermediateNodes.clear();
11798 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11799 mapOfJunctionGroups.clear();
11801 for (int idom = 0; idom < theElems.size(); idom++)
11803 const TIDSortedElemSet& domain = theElems[idom];
11804 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11805 for (; elemItr != domain.end(); ++elemItr)
11807 SMDS_MeshElement* anElem = (SMDS_MeshElement*) *elemItr;
11808 SMDS_MeshFace* aFace = dynamic_cast<SMDS_MeshFace*> (anElem);
11811 // MESSAGE("aFace=" << aFace->GetID());
11812 bool isQuad = aFace->IsQuadratic();
11813 vector<const SMDS_MeshNode*> ln0, ln1, ln2, ln3, ln4;
11815 // --- clone the nodes, create intermediate nodes for non medium nodes of a quad face
11817 SMDS_ElemIteratorPtr nodeIt = aFace->nodesIterator();
11818 while (nodeIt->more())
11820 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*> (nodeIt->next());
11821 bool isMedium = isQuad && (aFace->IsMediumNode(node));
11823 ln2.push_back(node);
11825 ln0.push_back(node);
11827 const SMDS_MeshNode* clone = 0;
11828 if (!clonedNodes.count(node))
11830 clone = meshDS->AddNode(node->X(), node->Y(), node->Z());
11831 copyPosition( node, clone );
11832 clonedNodes[node] = clone;
11835 clone = clonedNodes[node];
11838 ln3.push_back(clone);
11840 ln1.push_back(clone);
11842 const SMDS_MeshNode* inter = 0;
11843 if (isQuad && (!isMedium))
11845 if (!intermediateNodes.count(node))
11847 inter = meshDS->AddNode(node->X(), node->Y(), node->Z());
11848 copyPosition( node, inter );
11849 intermediateNodes[node] = inter;
11852 inter = intermediateNodes[node];
11853 ln4.push_back(inter);
11857 // --- extrude the face
11859 vector<const SMDS_MeshNode*> ln;
11860 SMDS_MeshVolume* vol = 0;
11861 vtkIdType aType = aFace->GetVtkType();
11865 vol = meshDS->AddVolume(ln0[2], ln0[1], ln0[0], ln1[2], ln1[1], ln1[0]);
11866 // MESSAGE("vol prism " << vol->GetID());
11867 ln.push_back(ln1[0]);
11868 ln.push_back(ln1[1]);
11869 ln.push_back(ln1[2]);
11872 vol = meshDS->AddVolume(ln0[3], ln0[2], ln0[1], ln0[0], ln1[3], ln1[2], ln1[1], ln1[0]);
11873 // MESSAGE("vol hexa " << vol->GetID());
11874 ln.push_back(ln1[0]);
11875 ln.push_back(ln1[1]);
11876 ln.push_back(ln1[2]);
11877 ln.push_back(ln1[3]);
11879 case VTK_QUADRATIC_TRIANGLE:
11880 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln0[0], ln0[1], ln0[2], ln3[0], ln3[1], ln3[2],
11881 ln2[0], ln2[1], ln2[2], ln4[0], ln4[1], ln4[2]);
11882 // MESSAGE("vol quad prism " << vol->GetID());
11883 ln.push_back(ln1[0]);
11884 ln.push_back(ln1[1]);
11885 ln.push_back(ln1[2]);
11886 ln.push_back(ln3[0]);
11887 ln.push_back(ln3[1]);
11888 ln.push_back(ln3[2]);
11890 case VTK_QUADRATIC_QUAD:
11891 // vol = meshDS->AddVolume(ln0[0], ln0[1], ln0[2], ln0[3], ln1[0], ln1[1], ln1[2], ln1[3],
11892 // ln2[0], ln2[1], ln2[2], ln2[3], ln3[0], ln3[1], ln3[2], ln3[3],
11893 // ln4[0], ln4[1], ln4[2], ln4[3]);
11894 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln1[3], ln0[0], ln0[1], ln0[2], ln0[3],
11895 ln3[0], ln3[1], ln3[2], ln3[3], ln2[0], ln2[1], ln2[2], ln2[3],
11896 ln4[0], ln4[1], ln4[2], ln4[3]);
11897 // MESSAGE("vol quad hexa " << vol->GetID());
11898 ln.push_back(ln1[0]);
11899 ln.push_back(ln1[1]);
11900 ln.push_back(ln1[2]);
11901 ln.push_back(ln1[3]);
11902 ln.push_back(ln3[0]);
11903 ln.push_back(ln3[1]);
11904 ln.push_back(ln3[2]);
11905 ln.push_back(ln3[3]);
11915 stringstream grpname;
11919 string namegrp = grpname.str();
11920 if (!mapOfJunctionGroups.count(namegrp))
11921 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11922 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11924 sgrp->Add(vol->GetID());
11927 // --- modify the face
11929 aFace->ChangeNodes(&ln[0], ln.size());
11936 * \brief identify all the elements around a geom shape, get the faces delimiting the hole
11937 * Build groups of volume to remove, groups of faces to replace on the skin of the object,
11938 * groups of faces to remove inside the object, (idem edges).
11939 * Build ordered list of nodes at the border of each group of faces to replace (to be used to build a geom subshape)
11941 void SMESH_MeshEditor::CreateHoleSkin(double radius,
11942 const TopoDS_Shape& theShape,
11943 SMESH_NodeSearcher* theNodeSearcher,
11944 const char* groupName,
11945 std::vector<double>& nodesCoords,
11946 std::vector<std::vector<int> >& listOfListOfNodes)
11948 MESSAGE("--------------------------------");
11949 MESSAGE("SMESH_MeshEditor::CreateHoleSkin");
11950 MESSAGE("--------------------------------");
11952 // --- zone of volumes to remove is given :
11953 // 1 either by a geom shape (one or more vertices) and a radius,
11954 // 2 either by a group of nodes (representative of the shape)to use with the radius,
11955 // 3 either by a group of nodes where all the elements build on one of this nodes are to remove,
11956 // In the case 2, the group of nodes is an external group of nodes from another mesh,
11957 // In the case 3, the group of nodes is an internal group of the mesh (obtained for instance by a filter),
11958 // defined by it's name.
11960 SMESHDS_GroupBase* groupDS = 0;
11961 SMESH_Mesh::GroupIteratorPtr groupIt = this->myMesh->GetGroups();
11962 while ( groupIt->more() )
11965 SMESH_Group * group = groupIt->next();
11966 if ( !group ) continue;
11967 groupDS = group->GetGroupDS();
11968 if ( !groupDS || groupDS->IsEmpty() ) continue;
11969 std::string grpName = group->GetName();
11970 //MESSAGE("grpName=" << grpName);
11971 if (grpName == groupName)
11977 bool isNodeGroup = false;
11978 bool isNodeCoords = false;
11981 if (groupDS->GetType() != SMDSAbs_Node)
11983 isNodeGroup = true; // a group of nodes exists and it is in this mesh
11986 if (nodesCoords.size() > 0)
11987 isNodeCoords = true; // a list o nodes given by their coordinates
11988 //MESSAGE("---" << isNodeGroup << " " << isNodeCoords);
11990 // --- define groups to build
11992 int idg; // --- group of SMDS volumes
11993 string grpvName = groupName;
11994 grpvName += "_vol";
11995 SMESH_Group *grp = this->myMesh->AddGroup(SMDSAbs_Volume, grpvName.c_str(), idg);
11998 MESSAGE("group not created " << grpvName);
12001 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(grp->GetGroupDS());
12003 int idgs; // --- group of SMDS faces on the skin
12004 string grpsName = groupName;
12005 grpsName += "_skin";
12006 SMESH_Group *grps = this->myMesh->AddGroup(SMDSAbs_Face, grpsName.c_str(), idgs);
12009 MESSAGE("group not created " << grpsName);
12012 SMESHDS_Group *sgrps = dynamic_cast<SMESHDS_Group*>(grps->GetGroupDS());
12014 int idgi; // --- group of SMDS faces internal (several shapes)
12015 string grpiName = groupName;
12016 grpiName += "_internalFaces";
12017 SMESH_Group *grpi = this->myMesh->AddGroup(SMDSAbs_Face, grpiName.c_str(), idgi);
12020 MESSAGE("group not created " << grpiName);
12023 SMESHDS_Group *sgrpi = dynamic_cast<SMESHDS_Group*>(grpi->GetGroupDS());
12025 int idgei; // --- group of SMDS faces internal (several shapes)
12026 string grpeiName = groupName;
12027 grpeiName += "_internalEdges";
12028 SMESH_Group *grpei = this->myMesh->AddGroup(SMDSAbs_Edge, grpeiName.c_str(), idgei);
12031 MESSAGE("group not created " << grpeiName);
12034 SMESHDS_Group *sgrpei = dynamic_cast<SMESHDS_Group*>(grpei->GetGroupDS());
12036 // --- build downward connectivity
12038 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
12039 meshDS->BuildDownWardConnectivity(true);
12040 SMDS_UnstructuredGrid* grid = meshDS->getGrid();
12042 // --- set of volumes detected inside
12044 std::set<int> setOfInsideVol;
12045 std::set<int> setOfVolToCheck;
12047 std::vector<gp_Pnt> gpnts;
12050 if (isNodeGroup) // --- a group of nodes is provided : find all the volumes using one or more of this nodes
12052 MESSAGE("group of nodes provided");
12053 SMDS_ElemIteratorPtr elemIt = groupDS->GetElements();
12054 while ( elemIt->more() )
12056 const SMDS_MeshElement* elem = elemIt->next();
12059 const SMDS_MeshNode* node = dynamic_cast<const SMDS_MeshNode*>(elem);
12062 SMDS_MeshElement* vol = 0;
12063 SMDS_ElemIteratorPtr volItr = node->GetInverseElementIterator(SMDSAbs_Volume);
12064 while (volItr->more())
12066 vol = (SMDS_MeshElement*)volItr->next();
12067 setOfInsideVol.insert(vol->getVtkId());
12068 sgrp->Add(vol->GetID());
12072 else if (isNodeCoords)
12074 MESSAGE("list of nodes coordinates provided");
12077 while (i < nodesCoords.size()-2)
12079 double x = nodesCoords[i++];
12080 double y = nodesCoords[i++];
12081 double z = nodesCoords[i++];
12082 gp_Pnt p = gp_Pnt(x, y ,z);
12083 gpnts.push_back(p);
12084 MESSAGE("TopoDS_Vertex " << k << " " << p.X() << " " << p.Y() << " " << p.Z());
12088 else // --- no group, no coordinates : use the vertices of the geom shape provided, and radius
12090 MESSAGE("no group of nodes provided, using vertices from geom shape, and radius");
12091 TopTools_IndexedMapOfShape vertexMap;
12092 TopExp::MapShapes( theShape, TopAbs_VERTEX, vertexMap );
12093 gp_Pnt p = gp_Pnt(0,0,0);
12094 if (vertexMap.Extent() < 1)
12097 for ( int i = 1; i <= vertexMap.Extent(); ++i )
12099 const TopoDS_Vertex& vertex = TopoDS::Vertex( vertexMap( i ));
12100 p = BRep_Tool::Pnt(vertex);
12101 gpnts.push_back(p);
12102 MESSAGE("TopoDS_Vertex " << i << " " << p.X() << " " << p.Y() << " " << p.Z());
12106 if (gpnts.size() > 0)
12109 const SMDS_MeshNode* startNode = theNodeSearcher->FindClosestTo(gpnts[0]);
12111 nodeId = startNode->GetID();
12112 MESSAGE("nodeId " << nodeId);
12114 double radius2 = radius*radius;
12115 MESSAGE("radius2 " << radius2);
12117 // --- volumes on start node
12119 setOfVolToCheck.clear();
12120 SMDS_MeshElement* startVol = 0;
12121 SMDS_ElemIteratorPtr volItr = startNode->GetInverseElementIterator(SMDSAbs_Volume);
12122 while (volItr->more())
12124 startVol = (SMDS_MeshElement*)volItr->next();
12125 setOfVolToCheck.insert(startVol->getVtkId());
12127 if (setOfVolToCheck.empty())
12129 MESSAGE("No volumes found");
12133 // --- starting with central volumes then their neighbors, check if they are inside
12134 // or outside the domain, until no more new neighbor volume is inside.
12135 // Fill the group of inside volumes
12137 std::map<int, double> mapOfNodeDistance2;
12138 mapOfNodeDistance2.clear();
12139 std::set<int> setOfOutsideVol;
12140 while (!setOfVolToCheck.empty())
12142 std::set<int>::iterator it = setOfVolToCheck.begin();
12144 MESSAGE("volume to check, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12145 bool volInside = false;
12146 vtkIdType npts = 0;
12147 vtkIdType* pts = 0;
12148 grid->GetCellPoints(vtkId, npts, pts);
12149 for (int i=0; i<npts; i++)
12151 double distance2 = 0;
12152 if (mapOfNodeDistance2.count(pts[i]))
12154 distance2 = mapOfNodeDistance2[pts[i]];
12155 MESSAGE("point " << pts[i] << " distance2 " << distance2);
12159 double *coords = grid->GetPoint(pts[i]);
12160 gp_Pnt aPoint = gp_Pnt(coords[0], coords[1], coords[2]);
12162 for (int j=0; j<gpnts.size(); j++)
12164 double d2 = aPoint.SquareDistance(gpnts[j]);
12165 if (d2 < distance2)
12168 if (distance2 < radius2)
12172 mapOfNodeDistance2[pts[i]] = distance2;
12173 MESSAGE(" point " << pts[i] << " distance2 " << distance2 << " coords " << coords[0] << " " << coords[1] << " " << coords[2]);
12175 if (distance2 < radius2)
12177 volInside = true; // one or more nodes inside the domain
12178 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12184 setOfInsideVol.insert(vtkId);
12185 MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12186 int neighborsVtkIds[NBMAXNEIGHBORS];
12187 int downIds[NBMAXNEIGHBORS];
12188 unsigned char downTypes[NBMAXNEIGHBORS];
12189 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12190 for (int n = 0; n < nbNeighbors; n++)
12191 if (!setOfInsideVol.count(neighborsVtkIds[n]) ||setOfOutsideVol.count(neighborsVtkIds[n]))
12192 setOfVolToCheck.insert(neighborsVtkIds[n]);
12196 setOfOutsideVol.insert(vtkId);
12197 MESSAGE(" volume outside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12199 setOfVolToCheck.erase(vtkId);
12203 // --- for outside hexahedrons, check if they have more than one neighbor volume inside
12204 // If yes, add the volume to the inside set
12206 bool addedInside = true;
12207 std::set<int> setOfVolToReCheck;
12208 while (addedInside)
12210 MESSAGE(" --------------------------- re check");
12211 addedInside = false;
12212 std::set<int>::iterator itv = setOfInsideVol.begin();
12213 for (; itv != setOfInsideVol.end(); ++itv)
12216 int neighborsVtkIds[NBMAXNEIGHBORS];
12217 int downIds[NBMAXNEIGHBORS];
12218 unsigned char downTypes[NBMAXNEIGHBORS];
12219 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12220 for (int n = 0; n < nbNeighbors; n++)
12221 if (!setOfInsideVol.count(neighborsVtkIds[n]))
12222 setOfVolToReCheck.insert(neighborsVtkIds[n]);
12224 setOfVolToCheck = setOfVolToReCheck;
12225 setOfVolToReCheck.clear();
12226 while (!setOfVolToCheck.empty())
12228 std::set<int>::iterator it = setOfVolToCheck.begin();
12230 if (grid->GetCellType(vtkId) == VTK_HEXAHEDRON)
12232 MESSAGE("volume to recheck, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12233 int countInside = 0;
12234 int neighborsVtkIds[NBMAXNEIGHBORS];
12235 int downIds[NBMAXNEIGHBORS];
12236 unsigned char downTypes[NBMAXNEIGHBORS];
12237 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12238 for (int n = 0; n < nbNeighbors; n++)
12239 if (setOfInsideVol.count(neighborsVtkIds[n]))
12241 MESSAGE("countInside " << countInside);
12242 if (countInside > 1)
12244 MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12245 setOfInsideVol.insert(vtkId);
12246 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12247 addedInside = true;
12250 setOfVolToReCheck.insert(vtkId);
12252 setOfVolToCheck.erase(vtkId);
12256 // --- map of Downward faces at the boundary, inside the global volume
12257 // map of Downward faces on the skin of the global volume (equivalent to SMDS faces on the skin)
12258 // fill group of SMDS faces inside the volume (when several volume shapes)
12259 // fill group of SMDS faces on the skin of the global volume (if skin)
12261 std::map<DownIdType, int, DownIdCompare> boundaryFaces; // boundary faces inside the volume --> corresponding cell
12262 std::map<DownIdType, int, DownIdCompare> skinFaces; // faces on the skin of the global volume --> corresponding cell
12263 std::set<int>::iterator it = setOfInsideVol.begin();
12264 for (; it != setOfInsideVol.end(); ++it)
12267 //MESSAGE(" vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12268 int neighborsVtkIds[NBMAXNEIGHBORS];
12269 int downIds[NBMAXNEIGHBORS];
12270 unsigned char downTypes[NBMAXNEIGHBORS];
12271 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId, true);
12272 for (int n = 0; n < nbNeighbors; n++)
12274 int neighborDim = SMDS_Downward::getCellDimension(grid->GetCellType(neighborsVtkIds[n]));
12275 if (neighborDim == 3)
12277 if (! setOfInsideVol.count(neighborsVtkIds[n])) // neighbor volume is not inside : face is boundary
12279 DownIdType face(downIds[n], downTypes[n]);
12280 boundaryFaces[face] = vtkId;
12282 // if the face between to volumes is in the mesh, get it (internal face between shapes)
12283 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12284 if (vtkFaceId >= 0)
12286 sgrpi->Add(meshDS->fromVtkToSmds(vtkFaceId));
12287 // find also the smds edges on this face
12288 int nbEdges = grid->getDownArray(downTypes[n])->getNumberOfDownCells(downIds[n]);
12289 const int* dEdges = grid->getDownArray(downTypes[n])->getDownCells(downIds[n]);
12290 const unsigned char* dTypes = grid->getDownArray(downTypes[n])->getDownTypes(downIds[n]);
12291 for (int i = 0; i < nbEdges; i++)
12293 int vtkEdgeId = grid->getDownArray(dTypes[i])->getVtkCellId(dEdges[i]);
12294 if (vtkEdgeId >= 0)
12295 sgrpei->Add(meshDS->fromVtkToSmds(vtkEdgeId));
12299 else if (neighborDim == 2) // skin of the volume
12301 DownIdType face(downIds[n], downTypes[n]);
12302 skinFaces[face] = vtkId;
12303 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12304 if (vtkFaceId >= 0)
12305 sgrps->Add(meshDS->fromVtkToSmds(vtkFaceId));
12310 // --- identify the edges constituting the wire of each subshape on the skin
12311 // define polylines with the nodes of edges, equivalent to wires
12312 // project polylines on subshapes, and partition, to get geom faces
12314 std::map<int, std::set<int> > shapeIdToVtkIdSet; // shapeId --> set of vtkId on skin
12315 std::set<int> emptySet;
12317 std::set<int> shapeIds;
12319 SMDS_ElemIteratorPtr itelem = sgrps->GetElements();
12320 while (itelem->more())
12322 const SMDS_MeshElement *elem = itelem->next();
12323 int shapeId = elem->getshapeId();
12324 int vtkId = elem->getVtkId();
12325 if (!shapeIdToVtkIdSet.count(shapeId))
12327 shapeIdToVtkIdSet[shapeId] = emptySet;
12328 shapeIds.insert(shapeId);
12330 shapeIdToVtkIdSet[shapeId].insert(vtkId);
12333 std::map<int, std::set<DownIdType, DownIdCompare> > shapeIdToEdges; // shapeId --> set of downward edges
12334 std::set<DownIdType, DownIdCompare> emptyEdges;
12335 emptyEdges.clear();
12337 std::map<int, std::set<int> >::iterator itShape = shapeIdToVtkIdSet.begin();
12338 for (; itShape != shapeIdToVtkIdSet.end(); ++itShape)
12340 int shapeId = itShape->first;
12341 MESSAGE(" --- Shape ID --- "<< shapeId);
12342 shapeIdToEdges[shapeId] = emptyEdges;
12344 std::vector<int> nodesEdges;
12346 std::set<int>::iterator its = itShape->second.begin();
12347 for (; its != itShape->second.end(); ++its)
12350 MESSAGE(" " << vtkId);
12351 int neighborsVtkIds[NBMAXNEIGHBORS];
12352 int downIds[NBMAXNEIGHBORS];
12353 unsigned char downTypes[NBMAXNEIGHBORS];
12354 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12355 for (int n = 0; n < nbNeighbors; n++)
12357 if (neighborsVtkIds[n]<0) // only smds faces are considered as neighbors here
12359 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
12360 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
12361 if ( shapeIds.count(elem->getshapeId()) && !sgrps->Contains(elem)) // edge : neighbor in the set of shape, not in the group
12363 DownIdType edge(downIds[n], downTypes[n]);
12364 if (!shapeIdToEdges[shapeId].count(edge))
12366 shapeIdToEdges[shapeId].insert(edge);
12368 int nbNodes = grid->getDownArray(downTypes[n])->getNodes(downIds[n],vtkNodeId);
12369 nodesEdges.push_back(vtkNodeId[0]);
12370 nodesEdges.push_back(vtkNodeId[nbNodes-1]);
12371 MESSAGE(" --- nodes " << vtkNodeId[0]+1 << " " << vtkNodeId[nbNodes-1]+1);
12377 std::list<int> order;
12379 if (nodesEdges.size() > 0)
12381 order.push_back(nodesEdges[0]); MESSAGE(" --- back " << order.back()+1); // SMDS id = VTK id + 1;
12382 nodesEdges[0] = -1;
12383 order.push_back(nodesEdges[1]); MESSAGE(" --- back " << order.back()+1);
12384 nodesEdges[1] = -1; // do not reuse this edge
12388 int nodeTofind = order.back(); // try first to push back
12390 for (i = 0; i<nodesEdges.size(); i++)
12391 if (nodesEdges[i] == nodeTofind)
12393 if (i == nodesEdges.size())
12394 found = false; // no follower found on back
12397 if (i%2) // odd ==> use the previous one
12398 if (nodesEdges[i-1] < 0)
12402 order.push_back(nodesEdges[i-1]); MESSAGE(" --- back " << order.back()+1);
12403 nodesEdges[i-1] = -1;
12405 else // even ==> use the next one
12406 if (nodesEdges[i+1] < 0)
12410 order.push_back(nodesEdges[i+1]); MESSAGE(" --- back " << order.back()+1);
12411 nodesEdges[i+1] = -1;
12416 // try to push front
12418 nodeTofind = order.front(); // try to push front
12419 for (i = 0; i<nodesEdges.size(); i++)
12420 if (nodesEdges[i] == nodeTofind)
12422 if (i == nodesEdges.size())
12424 found = false; // no predecessor found on front
12427 if (i%2) // odd ==> use the previous one
12428 if (nodesEdges[i-1] < 0)
12432 order.push_front(nodesEdges[i-1]); MESSAGE(" --- front " << order.front()+1);
12433 nodesEdges[i-1] = -1;
12435 else // even ==> use the next one
12436 if (nodesEdges[i+1] < 0)
12440 order.push_front(nodesEdges[i+1]); MESSAGE(" --- front " << order.front()+1);
12441 nodesEdges[i+1] = -1;
12447 std::vector<int> nodes;
12448 nodes.push_back(shapeId);
12449 std::list<int>::iterator itl = order.begin();
12450 for (; itl != order.end(); itl++)
12452 nodes.push_back((*itl) + 1); // SMDS id = VTK id + 1;
12453 MESSAGE(" ordered node " << nodes[nodes.size()-1]);
12455 listOfListOfNodes.push_back(nodes);
12458 // partition geom faces with blocFissure
12459 // mesh blocFissure and geom faces of the skin (external wires given, triangle algo to choose)
12460 // mesh volume around blocFissure (skin triangles and quadrangle given, tetra algo to choose)
12466 //================================================================================
12468 * \brief Generates skin mesh (containing 2D cells) from 3D mesh
12469 * The created 2D mesh elements based on nodes of free faces of boundary volumes
12470 * \return TRUE if operation has been completed successfully, FALSE otherwise
12472 //================================================================================
12474 bool SMESH_MeshEditor::Make2DMeshFrom3D()
12476 // iterates on volume elements and detect all free faces on them
12477 SMESHDS_Mesh* aMesh = GetMeshDS();
12481 ElemFeatures faceType( SMDSAbs_Face );
12482 int nbFree = 0, nbExisted = 0, nbCreated = 0;
12483 SMDS_VolumeIteratorPtr vIt = aMesh->volumesIterator();
12486 const SMDS_MeshVolume* volume = vIt->next();
12487 SMDS_VolumeTool vTool( volume, /*ignoreCentralNodes=*/false );
12488 vTool.SetExternalNormal();
12489 const int iQuad = volume->IsQuadratic();
12490 faceType.SetQuad( iQuad );
12491 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12493 if (!vTool.IsFreeFace(iface))
12496 vector<const SMDS_MeshNode *> nodes;
12497 int nbFaceNodes = vTool.NbFaceNodes(iface);
12498 const SMDS_MeshNode** faceNodes = vTool.GetFaceNodes(iface);
12500 for ( ; inode < nbFaceNodes; inode += iQuad+1)
12501 nodes.push_back(faceNodes[inode]);
12503 if (iQuad) // add medium nodes
12505 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12506 nodes.push_back(faceNodes[inode]);
12507 if ( nbFaceNodes == 9 ) // bi-quadratic quad
12508 nodes.push_back(faceNodes[8]);
12510 // add new face based on volume nodes
12511 if (aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false) )
12513 nbExisted++; // face already exsist
12517 AddElement( nodes, faceType.SetPoly( nbFaceNodes/(iQuad+1) > 4 ));
12522 return ( nbFree == ( nbExisted + nbCreated ));
12527 inline const SMDS_MeshNode* getNodeWithSameID(SMESHDS_Mesh* mesh, const SMDS_MeshNode* node)
12529 if ( const SMDS_MeshNode* n = mesh->FindNode( node->GetID() ))
12531 return mesh->AddNodeWithID( node->X(),node->Y(),node->Z(), node->GetID() );
12534 //================================================================================
12536 * \brief Creates missing boundary elements
12537 * \param elements - elements whose boundary is to be checked
12538 * \param dimension - defines type of boundary elements to create
12539 * \param group - a group to store created boundary elements in
12540 * \param targetMesh - a mesh to store created boundary elements in
12541 * \param toCopyElements - if true, the checked elements will be copied into the targetMesh
12542 * \param toCopyExistingBoundary - if true, not only new but also pre-existing
12543 * boundary elements will be copied into the targetMesh
12544 * \param toAddExistingBondary - if true, not only new but also pre-existing
12545 * boundary elements will be added into the new group
12546 * \param aroundElements - if true, elements will be created on boundary of given
12547 * elements else, on boundary of the whole mesh.
12548 * \return nb of added boundary elements
12550 //================================================================================
12552 int SMESH_MeshEditor::MakeBoundaryMesh(const TIDSortedElemSet& elements,
12553 Bnd_Dimension dimension,
12554 SMESH_Group* group/*=0*/,
12555 SMESH_Mesh* targetMesh/*=0*/,
12556 bool toCopyElements/*=false*/,
12557 bool toCopyExistingBoundary/*=false*/,
12558 bool toAddExistingBondary/*= false*/,
12559 bool aroundElements/*= false*/)
12561 SMDSAbs_ElementType missType = (dimension == BND_2DFROM3D) ? SMDSAbs_Face : SMDSAbs_Edge;
12562 SMDSAbs_ElementType elemType = (dimension == BND_1DFROM2D) ? SMDSAbs_Face : SMDSAbs_Volume;
12563 // hope that all elements are of the same type, do not check them all
12564 if ( !elements.empty() && (*elements.begin())->GetType() != elemType )
12565 throw SALOME_Exception(LOCALIZED("wrong element type"));
12568 toCopyElements = toCopyExistingBoundary = false;
12570 SMESH_MeshEditor tgtEditor( targetMesh ? targetMesh : myMesh );
12571 SMESHDS_Mesh* aMesh = GetMeshDS(), *tgtMeshDS = tgtEditor.GetMeshDS();
12572 int nbAddedBnd = 0;
12574 // editor adding present bnd elements and optionally holding elements to add to the group
12575 SMESH_MeshEditor* presentEditor;
12576 SMESH_MeshEditor tgtEditor2( tgtEditor.GetMesh() );
12577 presentEditor = toAddExistingBondary ? &tgtEditor : &tgtEditor2;
12579 SMESH_MesherHelper helper( *myMesh );
12580 const TopAbs_ShapeEnum missShapeType = ( missType==SMDSAbs_Face ? TopAbs_FACE : TopAbs_EDGE );
12581 SMDS_VolumeTool vTool;
12582 TIDSortedElemSet avoidSet;
12583 const TIDSortedElemSet emptySet, *elemSet = aroundElements ? &elements : &emptySet;
12586 typedef vector<const SMDS_MeshNode*> TConnectivity;
12587 TConnectivity tgtNodes;
12588 ElemFeatures elemKind( missType ), elemToCopy;
12590 vector<const SMDS_MeshElement*> presentBndElems;
12591 vector<TConnectivity> missingBndElems;
12592 vector<int> freeFacets;
12593 TConnectivity nodes, elemNodes;
12595 SMDS_ElemIteratorPtr eIt;
12596 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12597 else eIt = elemSetIterator( elements );
12599 while (eIt->more())
12601 const SMDS_MeshElement* elem = eIt->next();
12602 const int iQuad = elem->IsQuadratic();
12603 elemKind.SetQuad( iQuad );
12605 // ------------------------------------------------------------------------------------
12606 // 1. For an elem, get present bnd elements and connectivities of missing bnd elements
12607 // ------------------------------------------------------------------------------------
12608 presentBndElems.clear();
12609 missingBndElems.clear();
12610 freeFacets.clear(); nodes.clear(); elemNodes.clear();
12611 if ( vTool.Set(elem, /*ignoreCentralNodes=*/true) ) // elem is a volume --------------
12613 const SMDS_MeshElement* otherVol = 0;
12614 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12616 if ( !vTool.IsFreeFace(iface, &otherVol) &&
12617 ( !aroundElements || elements.count( otherVol )))
12619 freeFacets.push_back( iface );
12621 if ( missType == SMDSAbs_Face )
12622 vTool.SetExternalNormal();
12623 for ( size_t i = 0; i < freeFacets.size(); ++i )
12625 int iface = freeFacets[i];
12626 const SMDS_MeshNode** nn = vTool.GetFaceNodes(iface);
12627 const size_t nbFaceNodes = vTool.NbFaceNodes (iface);
12628 if ( missType == SMDSAbs_Edge ) // boundary edges
12630 nodes.resize( 2+iQuad );
12631 for ( int i = 0; i < nbFaceNodes; i += 1+iQuad)
12633 for ( int j = 0; j < nodes.size(); ++j )
12634 nodes[j] = nn[ i+j ];
12635 if ( const SMDS_MeshElement* edge =
12636 aMesh->FindElement( nodes, SMDSAbs_Edge, /*noMedium=*/false ))
12637 presentBndElems.push_back( edge );
12639 missingBndElems.push_back( nodes );
12642 else // boundary face
12645 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12646 nodes.push_back( nn[inode] ); // add corner nodes
12648 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12649 nodes.push_back( nn[inode] ); // add medium nodes
12650 int iCenter = vTool.GetCenterNodeIndex(iface); // for HEX27
12652 nodes.push_back( vTool.GetNodes()[ iCenter ] );
12654 if (const SMDS_MeshElement * f = aMesh->FindElement( nodes,
12655 SMDSAbs_Face, /*noMedium=*/false ))
12656 presentBndElems.push_back( f );
12658 missingBndElems.push_back( nodes );
12660 if ( targetMesh != myMesh )
12662 // add 1D elements on face boundary to be added to a new mesh
12663 const SMDS_MeshElement* edge;
12664 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12667 edge = aMesh->FindEdge( nn[inode], nn[inode+1], nn[inode+2]);
12669 edge = aMesh->FindEdge( nn[inode], nn[inode+1]);
12670 if ( edge && avoidSet.insert( edge ).second )
12671 presentBndElems.push_back( edge );
12677 else if ( elem->GetType() == SMDSAbs_Face ) // elem is a face ------------------------
12679 avoidSet.clear(), avoidSet.insert( elem );
12680 elemNodes.assign( SMDS_MeshElement::iterator( elem->interlacedNodesElemIterator() ),
12681 SMDS_MeshElement::iterator() );
12682 elemNodes.push_back( elemNodes[0] );
12683 nodes.resize( 2 + iQuad );
12684 const int nbLinks = elem->NbCornerNodes();
12685 for ( int i = 0, iN = 0; i < nbLinks; i++, iN += 1+iQuad )
12687 nodes[0] = elemNodes[iN];
12688 nodes[1] = elemNodes[iN+1+iQuad];
12689 if ( SMESH_MeshAlgos::FindFaceInSet( nodes[0], nodes[1], *elemSet, avoidSet))
12690 continue; // not free link
12692 if ( iQuad ) nodes[2] = elemNodes[iN+1];
12693 if ( const SMDS_MeshElement* edge =
12694 aMesh->FindElement(nodes,SMDSAbs_Edge,/*noMedium=*/false))
12695 presentBndElems.push_back( edge );
12697 missingBndElems.push_back( nodes );
12701 // ---------------------------------
12702 // 2. Add missing boundary elements
12703 // ---------------------------------
12704 if ( targetMesh != myMesh )
12705 // instead of making a map of nodes in this mesh and targetMesh,
12706 // we create nodes with same IDs.
12707 for ( size_t i = 0; i < missingBndElems.size(); ++i )
12709 TConnectivity& srcNodes = missingBndElems[i];
12710 tgtNodes.resize( srcNodes.size() );
12711 for ( inode = 0; inode < srcNodes.size(); ++inode )
12712 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, srcNodes[inode] );
12713 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( tgtNodes,
12715 /*noMedium=*/false))
12717 tgtEditor.AddElement( tgtNodes, elemKind.SetPoly( tgtNodes.size()/(iQuad+1) > 4 ));
12721 for ( int i = 0; i < missingBndElems.size(); ++i )
12723 TConnectivity& nodes = missingBndElems[i];
12724 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( nodes,
12726 /*noMedium=*/false))
12728 SMDS_MeshElement* newElem =
12729 tgtEditor.AddElement( nodes, elemKind.SetPoly( nodes.size()/(iQuad+1) > 4 ));
12730 nbAddedBnd += bool( newElem );
12732 // try to set a new element to a shape
12733 if ( myMesh->HasShapeToMesh() )
12736 set< pair<TopAbs_ShapeEnum, int > > mediumShapes;
12737 const size_t nbN = nodes.size() / (iQuad+1 );
12738 for ( inode = 0; inode < nbN && ok; ++inode )
12740 pair<int, TopAbs_ShapeEnum> i_stype =
12741 helper.GetMediumPos( nodes[inode], nodes[(inode+1)%nbN]);
12742 if (( ok = ( i_stype.first > 0 && i_stype.second >= TopAbs_FACE )))
12743 mediumShapes.insert( make_pair ( i_stype.second, i_stype.first ));
12745 if ( ok && mediumShapes.size() > 1 )
12747 set< pair<TopAbs_ShapeEnum, int > >::iterator stype_i = mediumShapes.begin();
12748 pair<TopAbs_ShapeEnum, int> stype_i_0 = *stype_i;
12749 for ( ++stype_i; stype_i != mediumShapes.end() && ok; ++stype_i )
12751 if (( ok = ( stype_i->first != stype_i_0.first )))
12752 ok = helper.IsSubShape( aMesh->IndexToShape( stype_i->second ),
12753 aMesh->IndexToShape( stype_i_0.second ));
12756 if ( ok && mediumShapes.begin()->first == missShapeType )
12757 aMesh->SetMeshElementOnShape( newElem, mediumShapes.begin()->second );
12761 // ----------------------------------
12762 // 3. Copy present boundary elements
12763 // ----------------------------------
12764 if ( toCopyExistingBoundary )
12765 for ( int i = 0 ; i < presentBndElems.size(); ++i )
12767 const SMDS_MeshElement* e = presentBndElems[i];
12768 tgtNodes.resize( e->NbNodes() );
12769 for ( inode = 0; inode < nodes.size(); ++inode )
12770 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, e->GetNode(inode) );
12771 presentEditor->AddElement( tgtNodes, elemToCopy.Init( e ));
12773 else // store present elements to add them to a group
12774 for ( int i = 0 ; i < presentBndElems.size(); ++i )
12776 presentEditor->myLastCreatedElems.Append( presentBndElems[i] );
12779 } // loop on given elements
12781 // ---------------------------------------------
12782 // 4. Fill group with boundary elements
12783 // ---------------------------------------------
12786 if ( SMESHDS_Group* g = dynamic_cast<SMESHDS_Group*>( group->GetGroupDS() ))
12787 for ( int i = 0; i < tgtEditor.myLastCreatedElems.Size(); ++i )
12788 g->SMDSGroup().Add( tgtEditor.myLastCreatedElems( i+1 ));
12790 tgtEditor.myLastCreatedElems.Clear();
12791 tgtEditor2.myLastCreatedElems.Clear();
12793 // -----------------------
12794 // 5. Copy given elements
12795 // -----------------------
12796 if ( toCopyElements && targetMesh != myMesh )
12798 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12799 else eIt = elemSetIterator( elements );
12800 while (eIt->more())
12802 const SMDS_MeshElement* elem = eIt->next();
12803 tgtNodes.resize( elem->NbNodes() );
12804 for ( inode = 0; inode < tgtNodes.size(); ++inode )
12805 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, elem->GetNode(inode) );
12806 tgtEditor.AddElement( tgtNodes, elemToCopy.Init( elem ));
12808 tgtEditor.myLastCreatedElems.Clear();
12814 //================================================================================
12816 * \brief Copy node position and set \a to node on the same geometry
12818 //================================================================================
12820 void SMESH_MeshEditor::copyPosition( const SMDS_MeshNode* from,
12821 const SMDS_MeshNode* to )
12823 if ( !from || !to ) return;
12825 SMDS_PositionPtr pos = from->GetPosition();
12826 if ( !pos || from->getshapeId() < 1 ) return;
12828 switch ( pos->GetTypeOfPosition() )
12830 case SMDS_TOP_3DSPACE: break;
12832 case SMDS_TOP_FACE:
12834 const SMDS_FacePosition* fPos = static_cast< const SMDS_FacePosition* >( pos );
12835 GetMeshDS()->SetNodeOnFace( to, from->getshapeId(),
12836 fPos->GetUParameter(), fPos->GetVParameter() );
12839 case SMDS_TOP_EDGE:
12841 // WARNING: it is dangerous to set equal nodes on one EDGE!!!!!!!!
12842 const SMDS_EdgePosition* ePos = static_cast< const SMDS_EdgePosition* >( pos );
12843 GetMeshDS()->SetNodeOnEdge( to, from->getshapeId(), ePos->GetUParameter() );
12846 case SMDS_TOP_VERTEX:
12848 GetMeshDS()->SetNodeOnVertex( to, from->getshapeId() );
12851 case SMDS_TOP_UNSPEC: