1 // Copyright (C) 2007-2016 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_Downward.hxx"
30 #include "SMDS_EdgePosition.hxx"
31 #include "SMDS_FaceOfNodes.hxx"
32 #include "SMDS_FacePosition.hxx"
33 #include "SMDS_LinearEdge.hxx"
34 #include "SMDS_MeshGroup.hxx"
35 #include "SMDS_SetIterator.hxx"
36 #include "SMDS_SpacePosition.hxx"
37 #include "SMDS_VolumeTool.hxx"
38 #include "SMESHDS_Group.hxx"
39 #include "SMESHDS_Mesh.hxx"
40 #include "SMESH_Algo.hxx"
41 #include "SMESH_ControlsDef.hxx"
42 #include "SMESH_Group.hxx"
43 #include "SMESH_Mesh.hxx"
44 #include "SMESH_MeshAlgos.hxx"
45 #include "SMESH_MesherHelper.hxx"
46 #include "SMESH_OctreeNode.hxx"
47 #include "SMESH_subMesh.hxx"
49 #include <Basics_OCCTVersion.hxx>
51 #include "utilities.h"
54 #include <BRepAdaptor_Surface.hxx>
55 #include <BRepBuilderAPI_MakeEdge.hxx>
56 #include <BRepClass3d_SolidClassifier.hxx>
57 #include <BRep_Tool.hxx>
59 #include <Extrema_GenExtPS.hxx>
60 #include <Extrema_POnCurv.hxx>
61 #include <Extrema_POnSurf.hxx>
62 #include <Geom2d_Curve.hxx>
63 #include <GeomAdaptor_Surface.hxx>
64 #include <Geom_Curve.hxx>
65 #include <Geom_Surface.hxx>
66 #include <Precision.hxx>
67 #include <TColStd_ListOfInteger.hxx>
68 #include <TopAbs_State.hxx>
70 #include <TopExp_Explorer.hxx>
71 #include <TopTools_ListIteratorOfListOfShape.hxx>
72 #include <TopTools_ListOfShape.hxx>
73 #include <TopTools_SequenceOfShape.hxx>
75 #include <TopoDS_Edge.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 Return mesh DS
132 //================================================================================
134 SMESHDS_Mesh * SMESH_MeshEditor::GetMeshDS()
136 return myMesh->GetMeshDS();
140 //================================================================================
142 * \brief Clears myLastCreatedNodes and myLastCreatedElems
144 //================================================================================
146 void SMESH_MeshEditor::ClearLastCreated()
148 myLastCreatedNodes.Clear();
149 myLastCreatedElems.Clear();
152 //================================================================================
154 * \brief Initializes members by an existing element
155 * \param [in] elem - the source element
156 * \param [in] basicOnly - if true, does not set additional data of Ball and Polyhedron
158 //================================================================================
160 SMESH_MeshEditor::ElemFeatures&
161 SMESH_MeshEditor::ElemFeatures::Init( const SMDS_MeshElement* elem, bool basicOnly )
165 myType = elem->GetType();
166 if ( myType == SMDSAbs_Face || myType == SMDSAbs_Volume )
168 myIsPoly = elem->IsPoly();
171 myIsQuad = elem->IsQuadratic();
172 if ( myType == SMDSAbs_Volume && !basicOnly )
174 vector<int > quant = static_cast<const SMDS_VtkVolume* >( elem )->GetQuantities();
175 myPolyhedQuantities.swap( quant );
179 else if ( myType == SMDSAbs_Ball && !basicOnly )
181 myBallDiameter = static_cast<const SMDS_BallElement*>(elem)->GetDiameter();
187 //=======================================================================
191 //=======================================================================
194 SMESH_MeshEditor::AddElement(const vector<const SMDS_MeshNode*> & node,
195 const ElemFeatures& features)
197 SMDS_MeshElement* e = 0;
198 int nbnode = node.size();
199 SMESHDS_Mesh* mesh = GetMeshDS();
200 const int ID = features.myID;
202 switch ( features.myType ) {
204 if ( !features.myIsPoly ) {
206 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], ID);
207 else e = mesh->AddFace (node[0], node[1], node[2] );
209 else if (nbnode == 4) {
210 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3], ID);
211 else e = mesh->AddFace (node[0], node[1], node[2], node[3] );
213 else if (nbnode == 6) {
214 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
215 node[4], node[5], ID);
216 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
219 else if (nbnode == 7) {
220 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
221 node[4], node[5], node[6], ID);
222 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
223 node[4], node[5], node[6] );
225 else if (nbnode == 8) {
226 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
227 node[4], node[5], node[6], node[7], ID);
228 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
229 node[4], node[5], node[6], node[7] );
231 else if (nbnode == 9) {
232 if ( ID >= 1 ) e = mesh->AddFaceWithID(node[0], node[1], node[2], node[3],
233 node[4], node[5], node[6], node[7], node[8], ID);
234 else e = mesh->AddFace (node[0], node[1], node[2], node[3],
235 node[4], node[5], node[6], node[7], node[8] );
238 else if ( !features.myIsQuad )
240 if ( ID >= 1 ) e = mesh->AddPolygonalFaceWithID(node, ID);
241 else e = mesh->AddPolygonalFace (node );
243 else if ( nbnode % 2 == 0 ) // just a protection
245 if ( ID >= 1 ) e = mesh->AddQuadPolygonalFaceWithID(node, ID);
246 else e = mesh->AddQuadPolygonalFace (node );
251 if ( !features.myIsPoly ) {
253 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3], ID);
254 else e = mesh->AddVolume (node[0], node[1], node[2], node[3] );
256 else if (nbnode == 5) {
257 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
259 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
262 else if (nbnode == 6) {
263 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
264 node[4], node[5], ID);
265 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
268 else if (nbnode == 8) {
269 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
270 node[4], node[5], node[6], node[7], ID);
271 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
272 node[4], node[5], node[6], node[7] );
274 else if (nbnode == 10) {
275 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
276 node[4], node[5], node[6], node[7],
277 node[8], node[9], ID);
278 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
279 node[4], node[5], node[6], node[7],
282 else if (nbnode == 12) {
283 if ( ID >= 1 ) e = mesh->AddVolumeWithID(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], ID);
286 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
287 node[4], node[5], node[6], node[7],
288 node[8], node[9], node[10], node[11] );
290 else if (nbnode == 13) {
291 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
292 node[4], node[5], node[6], node[7],
293 node[8], node[9], node[10],node[11],
295 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
296 node[4], node[5], node[6], node[7],
297 node[8], node[9], node[10],node[11],
300 else if (nbnode == 15) {
301 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
302 node[4], node[5], node[6], node[7],
303 node[8], node[9], node[10],node[11],
304 node[12],node[13],node[14],ID);
305 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
306 node[4], node[5], node[6], node[7],
307 node[8], node[9], node[10],node[11],
308 node[12],node[13],node[14] );
310 else if (nbnode == 20) {
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],ID);
316 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
317 node[4], node[5], node[6], node[7],
318 node[8], node[9], node[10],node[11],
319 node[12],node[13],node[14],node[15],
320 node[16],node[17],node[18],node[19] );
322 else if (nbnode == 27) {
323 if ( ID >= 1 ) e = mesh->AddVolumeWithID(node[0], node[1], node[2], node[3],
324 node[4], node[5], node[6], node[7],
325 node[8], node[9], node[10],node[11],
326 node[12],node[13],node[14],node[15],
327 node[16],node[17],node[18],node[19],
328 node[20],node[21],node[22],node[23],
329 node[24],node[25],node[26], ID);
330 else e = mesh->AddVolume (node[0], node[1], node[2], node[3],
331 node[4], node[5], node[6], node[7],
332 node[8], node[9], node[10],node[11],
333 node[12],node[13],node[14],node[15],
334 node[16],node[17],node[18],node[19],
335 node[20],node[21],node[22],node[23],
336 node[24],node[25],node[26] );
339 else if ( !features.myIsQuad )
341 if ( ID >= 1 ) e = mesh->AddPolyhedralVolumeWithID(node, features.myPolyhedQuantities, ID);
342 else e = mesh->AddPolyhedralVolume (node, features.myPolyhedQuantities );
346 // if ( ID >= 1 ) e = mesh->AddQuadPolyhedralVolumeWithID(node, features.myPolyhedQuantities,ID);
347 // else e = mesh->AddQuadPolyhedralVolume (node, features.myPolyhedQuantities );
353 if ( ID >= 1 ) e = mesh->AddEdgeWithID(node[0], node[1], ID);
354 else e = mesh->AddEdge (node[0], node[1] );
356 else if ( nbnode == 3 ) {
357 if ( ID >= 1 ) e = mesh->AddEdgeWithID(node[0], node[1], node[2], ID);
358 else e = mesh->AddEdge (node[0], node[1], node[2] );
362 case SMDSAbs_0DElement:
364 if ( ID >= 1 ) e = mesh->Add0DElementWithID(node[0], ID);
365 else e = mesh->Add0DElement (node[0] );
370 if ( ID >= 1 ) e = mesh->AddNodeWithID(node[0]->X(), node[0]->Y(), node[0]->Z(), ID);
371 else e = mesh->AddNode (node[0]->X(), node[0]->Y(), node[0]->Z() );
375 if ( ID >= 1 ) e = mesh->AddBallWithID(node[0], features.myBallDiameter, ID);
376 else e = mesh->AddBall (node[0], features.myBallDiameter );
381 if ( e ) myLastCreatedElems.Append( e );
385 //=======================================================================
389 //=======================================================================
391 SMDS_MeshElement* SMESH_MeshEditor::AddElement(const vector<int> & nodeIDs,
392 const ElemFeatures& features)
394 vector<const SMDS_MeshNode*> nodes;
395 nodes.reserve( nodeIDs.size() );
396 vector<int>::const_iterator id = nodeIDs.begin();
397 while ( id != nodeIDs.end() ) {
398 if ( const SMDS_MeshNode* node = GetMeshDS()->FindNode( *id++ ))
399 nodes.push_back( node );
403 return AddElement( nodes, features );
406 //=======================================================================
408 //purpose : Remove a node or an element.
409 // Modify a compute state of sub-meshes which become empty
410 //=======================================================================
412 int SMESH_MeshEditor::Remove (const list< int >& theIDs,
415 myLastCreatedElems.Clear();
416 myLastCreatedNodes.Clear();
418 SMESHDS_Mesh* aMesh = GetMeshDS();
419 set< SMESH_subMesh *> smmap;
422 list<int>::const_iterator it = theIDs.begin();
423 for ( ; it != theIDs.end(); it++ ) {
424 const SMDS_MeshElement * elem;
426 elem = aMesh->FindNode( *it );
428 elem = aMesh->FindElement( *it );
432 // Notify VERTEX sub-meshes about modification
434 const SMDS_MeshNode* node = cast2Node( elem );
435 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX )
436 if ( int aShapeID = node->getshapeId() )
437 if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( aShapeID ) )
440 // Find sub-meshes to notify about modification
441 // SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
442 // while ( nodeIt->more() ) {
443 // const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
444 // const SMDS_PositionPtr& aPosition = node->GetPosition();
445 // if ( aPosition.get() ) {
446 // if ( int aShapeID = aPosition->GetShapeId() ) {
447 // if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( aShapeID ) )
448 // smmap.insert( sm );
455 aMesh->RemoveNode( static_cast< const SMDS_MeshNode* >( elem ));
457 aMesh->RemoveElement( elem );
461 // Notify sub-meshes about modification
462 if ( !smmap.empty() ) {
463 set< SMESH_subMesh *>::iterator smIt;
464 for ( smIt = smmap.begin(); smIt != smmap.end(); smIt++ )
465 (*smIt)->ComputeStateEngine( SMESH_subMesh::MESH_ENTITY_REMOVED );
468 // // Check if the whole mesh becomes empty
469 // if ( SMESH_subMesh * sm = GetMesh()->GetSubMeshContaining( 1 ) )
470 // sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
475 //================================================================================
477 * \brief Create 0D elements on all nodes of the given object.
478 * \param elements - Elements on whose nodes to create 0D elements; if empty,
479 * the all mesh is treated
480 * \param all0DElems - returns all 0D elements found or created on nodes of \a elements
481 * \param duplicateElements - to add one more 0D element to a node or not
483 //================================================================================
485 void SMESH_MeshEditor::Create0DElementsOnAllNodes( const TIDSortedElemSet& elements,
486 TIDSortedElemSet& all0DElems,
487 const bool duplicateElements )
489 SMDS_ElemIteratorPtr elemIt;
490 if ( elements.empty() )
492 elemIt = GetMeshDS()->elementsIterator( SMDSAbs_Node );
496 elemIt = elemSetIterator( elements );
499 while ( elemIt->more() )
501 const SMDS_MeshElement* e = elemIt->next();
502 SMDS_ElemIteratorPtr nodeIt = e->nodesIterator();
503 while ( nodeIt->more() )
505 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
506 SMDS_ElemIteratorPtr it0D = n->GetInverseElementIterator( SMDSAbs_0DElement );
507 if ( duplicateElements || !it0D->more() )
509 myLastCreatedElems.Append( GetMeshDS()->Add0DElement( n ));
510 all0DElems.insert( myLastCreatedElems.Last() );
512 while ( it0D->more() )
513 all0DElems.insert( it0D->next() );
518 //=======================================================================
519 //function : FindShape
520 //purpose : Return an index of the shape theElem is on
521 // or zero if a shape not found
522 //=======================================================================
524 int SMESH_MeshEditor::FindShape (const SMDS_MeshElement * theElem)
526 myLastCreatedElems.Clear();
527 myLastCreatedNodes.Clear();
529 SMESHDS_Mesh * aMesh = GetMeshDS();
530 if ( aMesh->ShapeToMesh().IsNull() )
533 int aShapeID = theElem->getshapeId();
537 if ( SMESHDS_SubMesh * sm = aMesh->MeshElements( aShapeID ))
538 if ( sm->Contains( theElem ))
541 if ( theElem->GetType() == SMDSAbs_Node ) {
542 MESSAGE( ":( Error: invalid myShapeId of node " << theElem->GetID() );
545 MESSAGE( ":( Error: invalid myShapeId of element " << theElem->GetID() );
548 TopoDS_Shape aShape; // the shape a node of theElem is on
549 if ( theElem->GetType() != SMDSAbs_Node )
551 SMDS_ElemIteratorPtr nodeIt = theElem->nodesIterator();
552 while ( nodeIt->more() ) {
553 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
554 if ((aShapeID = node->getshapeId()) > 0) {
555 if ( SMESHDS_SubMesh * sm = aMesh->MeshElements( aShapeID ) ) {
556 if ( sm->Contains( theElem ))
558 if ( aShape.IsNull() )
559 aShape = aMesh->IndexToShape( aShapeID );
565 // None of nodes is on a proper shape,
566 // find the shape among ancestors of aShape on which a node is
567 if ( !aShape.IsNull() ) {
568 TopTools_ListIteratorOfListOfShape ancIt( GetMesh()->GetAncestors( aShape ));
569 for ( ; ancIt.More(); ancIt.Next() ) {
570 SMESHDS_SubMesh * sm = aMesh->MeshElements( ancIt.Value() );
571 if ( sm && sm->Contains( theElem ))
572 return aMesh->ShapeToIndex( ancIt.Value() );
577 SMESHDS_SubMeshIteratorPtr smIt = GetMeshDS()->SubMeshes();
578 while ( const SMESHDS_SubMesh* sm = smIt->next() )
579 if ( sm->Contains( theElem ))
586 //=======================================================================
587 //function : IsMedium
589 //=======================================================================
591 bool SMESH_MeshEditor::IsMedium(const SMDS_MeshNode* node,
592 const SMDSAbs_ElementType typeToCheck)
594 bool isMedium = false;
595 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator(typeToCheck);
596 while (it->more() && !isMedium ) {
597 const SMDS_MeshElement* elem = it->next();
598 isMedium = elem->IsMediumNode(node);
603 //=======================================================================
604 //function : shiftNodesQuadTria
605 //purpose : Shift nodes in the array corresponded to quadratic triangle
606 // example: (0,1,2,3,4,5) -> (1,2,0,4,5,3)
607 //=======================================================================
609 static void shiftNodesQuadTria(vector< const SMDS_MeshNode* >& aNodes)
611 const SMDS_MeshNode* nd1 = aNodes[0];
612 aNodes[0] = aNodes[1];
613 aNodes[1] = aNodes[2];
615 const SMDS_MeshNode* nd2 = aNodes[3];
616 aNodes[3] = aNodes[4];
617 aNodes[4] = aNodes[5];
621 //=======================================================================
622 //function : nbEdgeConnectivity
623 //purpose : return number of the edges connected with the theNode.
624 // if theEdges has connections with the other type of the
625 // elements, return -1
626 //=======================================================================
628 static int nbEdgeConnectivity(const SMDS_MeshNode* theNode)
630 // SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator();
632 // while(elemIt->more()) {
637 return theNode->NbInverseElements();
640 //=======================================================================
641 //function : getNodesFromTwoTria
643 //=======================================================================
645 static bool getNodesFromTwoTria(const SMDS_MeshElement * theTria1,
646 const SMDS_MeshElement * theTria2,
647 vector< const SMDS_MeshNode*>& N1,
648 vector< const SMDS_MeshNode*>& N2)
650 N1.assign( theTria1->begin_nodes(), theTria1->end_nodes() );
651 if ( N1.size() < 6 ) return false;
652 N2.assign( theTria2->begin_nodes(), theTria2->end_nodes() );
653 if ( N2.size() < 6 ) return false;
655 int sames[3] = {-1,-1,-1};
667 if(nbsames!=2) return false;
669 shiftNodesQuadTria(N1);
671 shiftNodesQuadTria(N1);
674 i = sames[0] + sames[1] + sames[2];
676 shiftNodesQuadTria(N2);
678 // now we receive following N1 and N2 (using numeration as in the image below)
679 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
680 // i.e. first nodes from both arrays form a new diagonal
684 //=======================================================================
685 //function : InverseDiag
686 //purpose : Replace two neighbour triangles with ones built on the same 4 nodes
687 // but having other common link.
688 // Return False if args are improper
689 //=======================================================================
691 bool SMESH_MeshEditor::InverseDiag (const SMDS_MeshElement * theTria1,
692 const SMDS_MeshElement * theTria2 )
694 myLastCreatedElems.Clear();
695 myLastCreatedNodes.Clear();
697 if (!theTria1 || !theTria2)
700 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( theTria1 );
701 if (!F1) return false;
702 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( theTria2 );
703 if (!F2) return false;
704 if ((theTria1->GetEntityType() == SMDSEntity_Triangle) &&
705 (theTria2->GetEntityType() == SMDSEntity_Triangle)) {
707 // 1 +--+ A theTria1: ( 1 A B ) A->2 ( 1 2 B ) 1 +--+ A
708 // | /| theTria2: ( B A 2 ) B->1 ( 1 A 2 ) |\ |
712 // put nodes in array and find out indices of the same ones
713 const SMDS_MeshNode* aNodes [6];
714 int sameInd [] = { -1, -1, -1, -1, -1, -1 };
716 SMDS_ElemIteratorPtr it = theTria1->nodesIterator();
717 while ( it->more() ) {
718 aNodes[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
720 if ( i > 2 ) // theTria2
721 // find same node of theTria1
722 for ( int j = 0; j < 3; j++ )
723 if ( aNodes[ i ] == aNodes[ j ]) {
732 return false; // theTria1 is not a triangle
733 it = theTria2->nodesIterator();
735 if ( i == 6 && it->more() )
736 return false; // theTria2 is not a triangle
739 // find indices of 1,2 and of A,B in theTria1
740 int iA = -1, iB = 0, i1 = 0, i2 = 0;
741 for ( i = 0; i < 6; i++ ) {
742 if ( sameInd [ i ] == -1 ) {
747 if ( iA >= 0) iB = i;
751 // nodes 1 and 2 should not be the same
752 if ( aNodes[ i1 ] == aNodes[ i2 ] )
756 aNodes[ iA ] = aNodes[ i2 ];
758 aNodes[ sameInd[ iB ]] = aNodes[ i1 ];
760 GetMeshDS()->ChangeElementNodes( theTria1, aNodes, 3 );
761 GetMeshDS()->ChangeElementNodes( theTria2, &aNodes[ 3 ], 3 );
765 } // end if(F1 && F2)
767 // check case of quadratic faces
768 if (theTria1->GetEntityType() != SMDSEntity_Quad_Triangle &&
769 theTria1->GetEntityType() != SMDSEntity_BiQuad_Triangle)
771 if (theTria2->GetEntityType() != SMDSEntity_Quad_Triangle&&
772 theTria2->GetEntityType() != SMDSEntity_BiQuad_Triangle)
776 // 1 +--+--+ 2 theTria1: (1 2 4 5 9 7) or (2 4 1 9 7 5) or (4 1 2 7 5 9)
777 // | /| theTria2: (2 3 4 6 8 9) or (3 4 2 8 9 6) or (4 2 3 9 6 8)
785 vector< const SMDS_MeshNode* > N1;
786 vector< const SMDS_MeshNode* > N2;
787 if(!getNodesFromTwoTria(theTria1,theTria2,N1,N2))
789 // now we receive following N1 and N2 (using numeration as above image)
790 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
791 // i.e. first nodes from both arrays determ new diagonal
793 vector< const SMDS_MeshNode*> N1new( N1.size() );
794 vector< const SMDS_MeshNode*> N2new( N2.size() );
795 N1new.back() = N1.back(); // central node of biquadratic
796 N2new.back() = N2.back();
797 N1new[0] = N1[0]; N2new[0] = N1[0];
798 N1new[1] = N2[0]; N2new[1] = N1[1];
799 N1new[2] = N2[1]; N2new[2] = N2[0];
800 N1new[3] = N1[4]; N2new[3] = N1[3];
801 N1new[4] = N2[3]; N2new[4] = N2[5];
802 N1new[5] = N1[5]; N2new[5] = N1[4];
803 // change nodes in faces
804 GetMeshDS()->ChangeElementNodes( theTria1, &N1new[0], N1new.size() );
805 GetMeshDS()->ChangeElementNodes( theTria2, &N2new[0], N2new.size() );
807 // move the central node of biquadratic triangle
808 SMESH_MesherHelper helper( *GetMesh() );
809 for ( int is2nd = 0; is2nd < 2; ++is2nd )
811 const SMDS_MeshElement* tria = is2nd ? theTria2 : theTria1;
812 vector< const SMDS_MeshNode*>& nodes = is2nd ? N2new : N1new;
813 if ( nodes.size() < 7 )
815 helper.SetSubShape( tria->getshapeId() );
816 const TopoDS_Face& F = TopoDS::Face( helper.GetSubShape() );
820 xyz = ( SMESH_TNodeXYZ( nodes[3] ) +
821 SMESH_TNodeXYZ( nodes[4] ) +
822 SMESH_TNodeXYZ( nodes[5] )) / 3.;
827 gp_XY uv = ( helper.GetNodeUV( F, nodes[3], nodes[2], &checkUV ) +
828 helper.GetNodeUV( F, nodes[4], nodes[0], &checkUV ) +
829 helper.GetNodeUV( F, nodes[5], nodes[1], &checkUV )) / 3.;
831 Handle(Geom_Surface) S = BRep_Tool::Surface(F,loc);
832 xyz = S->Value( uv.X(), uv.Y() );
833 xyz.Transform( loc );
834 if ( nodes[6]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE && // set UV
835 nodes[6]->getshapeId() > 0 )
836 GetMeshDS()->SetNodeOnFace( nodes[6], nodes[6]->getshapeId(), uv.X(), uv.Y() );
838 GetMeshDS()->MoveNode( nodes[6], xyz.X(), xyz.Y(), xyz.Z() );
843 //=======================================================================
844 //function : findTriangles
845 //purpose : find triangles sharing theNode1-theNode2 link
846 //=======================================================================
848 static bool findTriangles(const SMDS_MeshNode * theNode1,
849 const SMDS_MeshNode * theNode2,
850 const SMDS_MeshElement*& theTria1,
851 const SMDS_MeshElement*& theTria2)
853 if ( !theNode1 || !theNode2 ) return false;
855 theTria1 = theTria2 = 0;
857 set< const SMDS_MeshElement* > emap;
858 SMDS_ElemIteratorPtr it = theNode1->GetInverseElementIterator(SMDSAbs_Face);
860 const SMDS_MeshElement* elem = it->next();
861 if ( elem->NbCornerNodes() == 3 )
864 it = theNode2->GetInverseElementIterator(SMDSAbs_Face);
866 const SMDS_MeshElement* elem = it->next();
867 if ( emap.count( elem )) {
875 // theTria1 must be element with minimum ID
876 if ( theTria2->GetID() < theTria1->GetID() )
877 std::swap( theTria2, theTria1 );
885 //=======================================================================
886 //function : InverseDiag
887 //purpose : Replace two neighbour triangles sharing theNode1-theNode2 link
888 // with ones built on the same 4 nodes but having other common link.
889 // Return false if proper faces not found
890 //=======================================================================
892 bool SMESH_MeshEditor::InverseDiag (const SMDS_MeshNode * theNode1,
893 const SMDS_MeshNode * theNode2)
895 myLastCreatedElems.Clear();
896 myLastCreatedNodes.Clear();
898 const SMDS_MeshElement *tr1, *tr2;
899 if ( !findTriangles( theNode1, theNode2, tr1, tr2 ))
902 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( tr1 );
903 if (!F1) return false;
904 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( tr2 );
905 if (!F2) return false;
906 if ((tr1->GetEntityType() == SMDSEntity_Triangle) &&
907 (tr2->GetEntityType() == SMDSEntity_Triangle)) {
909 // 1 +--+ A tr1: ( 1 A B ) A->2 ( 1 2 B ) 1 +--+ A
910 // | /| tr2: ( B A 2 ) B->1 ( 1 A 2 ) |\ |
914 // put nodes in array
915 // and find indices of 1,2 and of A in tr1 and of B in tr2
916 int i, iA1 = 0, i1 = 0;
917 const SMDS_MeshNode* aNodes1 [3];
918 SMDS_ElemIteratorPtr it;
919 for (i = 0, it = tr1->nodesIterator(); it->more(); i++ ) {
920 aNodes1[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
921 if ( aNodes1[ i ] == theNode1 )
922 iA1 = i; // node A in tr1
923 else if ( aNodes1[ i ] != theNode2 )
927 const SMDS_MeshNode* aNodes2 [3];
928 for (i = 0, it = tr2->nodesIterator(); it->more(); i++ ) {
929 aNodes2[ i ] = static_cast<const SMDS_MeshNode*>( it->next() );
930 if ( aNodes2[ i ] == theNode2 )
931 iB2 = i; // node B in tr2
932 else if ( aNodes2[ i ] != theNode1 )
936 // nodes 1 and 2 should not be the same
937 if ( aNodes1[ i1 ] == aNodes2[ i2 ] )
941 aNodes1[ iA1 ] = aNodes2[ i2 ];
943 aNodes2[ iB2 ] = aNodes1[ i1 ];
945 GetMeshDS()->ChangeElementNodes( tr1, aNodes1, 3 );
946 GetMeshDS()->ChangeElementNodes( tr2, aNodes2, 3 );
951 // check case of quadratic faces
952 return InverseDiag(tr1,tr2);
955 //=======================================================================
956 //function : getQuadrangleNodes
957 //purpose : fill theQuadNodes - nodes of a quadrangle resulting from
958 // fusion of triangles tr1 and tr2 having shared link on
959 // theNode1 and theNode2
960 //=======================================================================
962 bool getQuadrangleNodes(const SMDS_MeshNode * theQuadNodes [],
963 const SMDS_MeshNode * theNode1,
964 const SMDS_MeshNode * theNode2,
965 const SMDS_MeshElement * tr1,
966 const SMDS_MeshElement * tr2 )
968 if( tr1->NbNodes() != tr2->NbNodes() )
970 // find the 4-th node to insert into tr1
971 const SMDS_MeshNode* n4 = 0;
972 SMDS_ElemIteratorPtr it = tr2->nodesIterator();
974 while ( !n4 && i<3 ) {
975 const SMDS_MeshNode * n = cast2Node( it->next() );
977 bool isDiag = ( n == theNode1 || n == theNode2 );
981 // Make an array of nodes to be in a quadrangle
982 int iNode = 0, iFirstDiag = -1;
983 it = tr1->nodesIterator();
986 const SMDS_MeshNode * n = cast2Node( it->next() );
988 bool isDiag = ( n == theNode1 || n == theNode2 );
990 if ( iFirstDiag < 0 )
992 else if ( iNode - iFirstDiag == 1 )
993 theQuadNodes[ iNode++ ] = n4; // insert the 4-th node between diagonal nodes
995 else if ( n == n4 ) {
996 return false; // tr1 and tr2 should not have all the same nodes
998 theQuadNodes[ iNode++ ] = n;
1000 if ( iNode == 3 ) // diagonal nodes have 0 and 2 indices
1001 theQuadNodes[ iNode ] = n4;
1006 //=======================================================================
1007 //function : DeleteDiag
1008 //purpose : Replace two neighbour triangles sharing theNode1-theNode2 link
1009 // with a quadrangle built on the same 4 nodes.
1010 // Return false if proper faces not found
1011 //=======================================================================
1013 bool SMESH_MeshEditor::DeleteDiag (const SMDS_MeshNode * theNode1,
1014 const SMDS_MeshNode * theNode2)
1016 myLastCreatedElems.Clear();
1017 myLastCreatedNodes.Clear();
1019 const SMDS_MeshElement *tr1, *tr2;
1020 if ( !findTriangles( theNode1, theNode2, tr1, tr2 ))
1023 const SMDS_VtkFace* F1 = dynamic_cast<const SMDS_VtkFace*>( tr1 );
1024 if (!F1) return false;
1025 const SMDS_VtkFace* F2 = dynamic_cast<const SMDS_VtkFace*>( tr2 );
1026 if (!F2) return false;
1027 SMESHDS_Mesh * aMesh = GetMeshDS();
1029 if ((tr1->GetEntityType() == SMDSEntity_Triangle) &&
1030 (tr2->GetEntityType() == SMDSEntity_Triangle)) {
1032 const SMDS_MeshNode* aNodes [ 4 ];
1033 if ( ! getQuadrangleNodes( aNodes, theNode1, theNode2, tr1, tr2 ))
1036 const SMDS_MeshElement* newElem = 0;
1037 newElem = aMesh->AddFace( aNodes[0], aNodes[1], aNodes[2], aNodes[3] );
1038 myLastCreatedElems.Append(newElem);
1039 AddToSameGroups( newElem, tr1, aMesh );
1040 int aShapeId = tr1->getshapeId();
1043 aMesh->SetMeshElementOnShape( newElem, aShapeId );
1045 aMesh->RemoveElement( tr1 );
1046 aMesh->RemoveElement( tr2 );
1051 // check case of quadratic faces
1052 if (tr1->GetEntityType() != SMDSEntity_Quad_Triangle)
1054 if (tr2->GetEntityType() != SMDSEntity_Quad_Triangle)
1058 // 1 +--+--+ 2 tr1: (1 2 4 5 9 7) or (2 4 1 9 7 5) or (4 1 2 7 5 9)
1059 // | /| tr2: (2 3 4 6 8 9) or (3 4 2 8 9 6) or (4 2 3 9 6 8)
1067 vector< const SMDS_MeshNode* > N1;
1068 vector< const SMDS_MeshNode* > N2;
1069 if(!getNodesFromTwoTria(tr1,tr2,N1,N2))
1071 // now we receive following N1 and N2 (using numeration as above image)
1072 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
1073 // i.e. first nodes from both arrays determ new diagonal
1075 const SMDS_MeshNode* aNodes[8];
1085 const SMDS_MeshElement* newElem = 0;
1086 newElem = aMesh->AddFace( aNodes[0], aNodes[1], aNodes[2], aNodes[3],
1087 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
1088 myLastCreatedElems.Append(newElem);
1089 AddToSameGroups( newElem, tr1, aMesh );
1090 int aShapeId = tr1->getshapeId();
1093 aMesh->SetMeshElementOnShape( newElem, aShapeId );
1095 aMesh->RemoveElement( tr1 );
1096 aMesh->RemoveElement( tr2 );
1098 // remove middle node (9)
1099 GetMeshDS()->RemoveNode( N1[4] );
1104 //=======================================================================
1105 //function : Reorient
1106 //purpose : Reverse theElement orientation
1107 //=======================================================================
1109 bool SMESH_MeshEditor::Reorient (const SMDS_MeshElement * theElem)
1111 myLastCreatedElems.Clear();
1112 myLastCreatedNodes.Clear();
1116 SMDS_ElemIteratorPtr it = theElem->nodesIterator();
1117 if ( !it || !it->more() )
1120 const SMDSAbs_ElementType type = theElem->GetType();
1121 if ( type < SMDSAbs_Edge || type > SMDSAbs_Volume )
1124 const SMDSAbs_EntityType geomType = theElem->GetEntityType();
1125 if ( geomType == SMDSEntity_Polyhedra ) // polyhedron
1127 const SMDS_VtkVolume* aPolyedre =
1128 dynamic_cast<const SMDS_VtkVolume*>( theElem );
1130 MESSAGE("Warning: bad volumic element");
1133 const int nbFaces = aPolyedre->NbFaces();
1134 vector<const SMDS_MeshNode *> poly_nodes;
1135 vector<int> quantities (nbFaces);
1137 // reverse each face of the polyedre
1138 for (int iface = 1; iface <= nbFaces; iface++) {
1139 int inode, nbFaceNodes = aPolyedre->NbFaceNodes(iface);
1140 quantities[iface - 1] = nbFaceNodes;
1142 for (inode = nbFaceNodes; inode >= 1; inode--) {
1143 const SMDS_MeshNode* curNode = aPolyedre->GetFaceNode(iface, inode);
1144 poly_nodes.push_back(curNode);
1147 return GetMeshDS()->ChangePolyhedronNodes( theElem, poly_nodes, quantities );
1149 else // other elements
1151 vector<const SMDS_MeshNode*> nodes( theElem->begin_nodes(), theElem->end_nodes() );
1152 const std::vector<int>& interlace = SMDS_MeshCell::reverseSmdsOrder( geomType, nodes.size() );
1153 if ( interlace.empty() )
1155 std::reverse( nodes.begin(), nodes.end() ); // obsolete, just in case
1159 SMDS_MeshCell::applyInterlace( interlace, nodes );
1161 return GetMeshDS()->ChangeElementNodes( theElem, &nodes[0], nodes.size() );
1166 //================================================================================
1168 * \brief Reorient faces.
1169 * \param theFaces - the faces to reorient. If empty the whole mesh is meant
1170 * \param theDirection - desired direction of normal of \a theFace
1171 * \param theFace - one of \a theFaces that should be oriented according to
1172 * \a theDirection and whose orientation defines orientation of other faces
1173 * \return number of reoriented faces.
1175 //================================================================================
1177 int SMESH_MeshEditor::Reorient2D (TIDSortedElemSet & theFaces,
1178 const gp_Dir& theDirection,
1179 const SMDS_MeshElement * theFace)
1182 if ( !theFace || theFace->GetType() != SMDSAbs_Face ) return nbReori;
1184 if ( theFaces.empty() )
1186 SMDS_FaceIteratorPtr fIt = GetMeshDS()->facesIterator(/*idInceasingOrder=*/true);
1187 while ( fIt->more() )
1188 theFaces.insert( theFaces.end(), fIt->next() );
1191 // orient theFace according to theDirection
1193 SMESH_MeshAlgos::FaceNormal( theFace, normal, /*normalized=*/false );
1194 if ( normal * theDirection.XYZ() < 0 )
1195 nbReori += Reorient( theFace );
1197 // Orient other faces
1199 set< const SMDS_MeshElement* > startFaces, visitedFaces;
1200 TIDSortedElemSet avoidSet;
1201 set< SMESH_TLink > checkedLinks;
1202 pair< set< SMESH_TLink >::iterator, bool > linkIt_isNew;
1204 if ( theFaces.size() > 1 )// leave 1 face to prevent finding not selected faces
1205 theFaces.erase( theFace );
1206 startFaces.insert( theFace );
1208 int nodeInd1, nodeInd2;
1209 const SMDS_MeshElement* otherFace;
1210 vector< const SMDS_MeshElement* > facesNearLink;
1211 vector< std::pair< int, int > > nodeIndsOfFace;
1213 set< const SMDS_MeshElement* >::iterator startFace = startFaces.begin();
1214 while ( !startFaces.empty() )
1216 startFace = startFaces.begin();
1217 theFace = *startFace;
1218 startFaces.erase( startFace );
1219 if ( !visitedFaces.insert( theFace ).second )
1223 avoidSet.insert(theFace);
1225 NLink link( theFace->GetNode( 0 ), (SMDS_MeshNode *) 0 );
1227 const int nbNodes = theFace->NbCornerNodes();
1228 for ( int i = 0; i < nbNodes; ++i ) // loop on links of theFace
1230 link.second = theFace->GetNode(( i+1 ) % nbNodes );
1231 linkIt_isNew = checkedLinks.insert( link );
1232 if ( !linkIt_isNew.second )
1234 // link has already been checked and won't be encountered more
1235 // if the group (theFaces) is manifold
1236 //checkedLinks.erase( linkIt_isNew.first );
1240 facesNearLink.clear();
1241 nodeIndsOfFace.clear();
1242 while (( otherFace = SMESH_MeshAlgos::FindFaceInSet( link.first, link.second,
1244 &nodeInd1, &nodeInd2 )))
1245 if ( otherFace != theFace)
1247 facesNearLink.push_back( otherFace );
1248 nodeIndsOfFace.push_back( make_pair( nodeInd1, nodeInd2 ));
1249 avoidSet.insert( otherFace );
1251 if ( facesNearLink.size() > 1 )
1253 // NON-MANIFOLD mesh shell !
1254 // select a face most co-directed with theFace,
1255 // other faces won't be visited this time
1257 SMESH_MeshAlgos::FaceNormal( theFace, NF, /*normalized=*/false );
1258 double proj, maxProj = -1;
1259 for ( size_t i = 0; i < facesNearLink.size(); ++i ) {
1260 SMESH_MeshAlgos::FaceNormal( facesNearLink[i], NOF, /*normalized=*/false );
1261 if (( proj = Abs( NF * NOF )) > maxProj ) {
1263 otherFace = facesNearLink[i];
1264 nodeInd1 = nodeIndsOfFace[i].first;
1265 nodeInd2 = nodeIndsOfFace[i].second;
1268 // not to visit rejected faces
1269 for ( size_t i = 0; i < facesNearLink.size(); ++i )
1270 if ( facesNearLink[i] != otherFace && theFaces.size() > 1 )
1271 visitedFaces.insert( facesNearLink[i] );
1273 else if ( facesNearLink.size() == 1 )
1275 otherFace = facesNearLink[0];
1276 nodeInd1 = nodeIndsOfFace.back().first;
1277 nodeInd2 = nodeIndsOfFace.back().second;
1279 if ( otherFace && otherFace != theFace)
1281 // link must be reverse in otherFace if orientation ot otherFace
1282 // is same as that of theFace
1283 if ( abs(nodeInd2-nodeInd1) == 1 ? nodeInd2 > nodeInd1 : nodeInd1 > nodeInd2 )
1285 nbReori += Reorient( otherFace );
1287 startFaces.insert( otherFace );
1290 std::swap( link.first, link.second ); // reverse the link
1296 //================================================================================
1298 * \brief Reorient faces basing on orientation of adjacent volumes.
1299 * \param theFaces - faces to reorient. If empty, all mesh faces are treated.
1300 * \param theVolumes - reference volumes.
1301 * \param theOutsideNormal - to orient faces to have their normal
1302 * pointing either \a outside or \a inside the adjacent volumes.
1303 * \return number of reoriented faces.
1305 //================================================================================
1307 int SMESH_MeshEditor::Reorient2DBy3D (TIDSortedElemSet & theFaces,
1308 TIDSortedElemSet & theVolumes,
1309 const bool theOutsideNormal)
1313 SMDS_ElemIteratorPtr faceIt;
1314 if ( theFaces.empty() )
1315 faceIt = GetMeshDS()->elementsIterator( SMDSAbs_Face );
1317 faceIt = elemSetIterator( theFaces );
1319 vector< const SMDS_MeshNode* > faceNodes;
1320 TIDSortedElemSet checkedVolumes;
1321 set< const SMDS_MeshNode* > faceNodesSet;
1322 SMDS_VolumeTool volumeTool;
1324 while ( faceIt->more() ) // loop on given faces
1326 const SMDS_MeshElement* face = faceIt->next();
1327 if ( face->GetType() != SMDSAbs_Face )
1330 const size_t nbCornersNodes = face->NbCornerNodes();
1331 faceNodes.assign( face->begin_nodes(), face->end_nodes() );
1333 checkedVolumes.clear();
1334 SMDS_ElemIteratorPtr vIt = faceNodes[ 0 ]->GetInverseElementIterator( SMDSAbs_Volume );
1335 while ( vIt->more() )
1337 const SMDS_MeshElement* volume = vIt->next();
1339 if ( !checkedVolumes.insert( volume ).second )
1341 if ( !theVolumes.empty() && !theVolumes.count( volume ))
1344 // is volume adjacent?
1345 bool allNodesCommon = true;
1346 for ( size_t iN = 1; iN < nbCornersNodes && allNodesCommon; ++iN )
1347 allNodesCommon = ( volume->GetNodeIndex( faceNodes[ iN ]) > -1 );
1348 if ( !allNodesCommon )
1351 // get nodes of a corresponding volume facet
1352 faceNodesSet.clear();
1353 faceNodesSet.insert( faceNodes.begin(), faceNodes.end() );
1354 volumeTool.Set( volume );
1355 int facetID = volumeTool.GetFaceIndex( faceNodesSet );
1356 if ( facetID < 0 ) continue;
1357 volumeTool.SetExternalNormal();
1358 const SMDS_MeshNode** facetNodes = volumeTool.GetFaceNodes( facetID );
1360 // compare order of faceNodes and facetNodes
1361 const int iQ = 1 + ( nbCornersNodes < faceNodes.size() );
1363 for ( int i = 0; i < 2; ++i )
1365 const SMDS_MeshNode* n = facetNodes[ i*iQ ];
1366 for ( size_t iN = 0; iN < nbCornersNodes; ++iN )
1367 if ( faceNodes[ iN ] == n )
1373 bool isOutside = Abs( iNN[0]-iNN[1] ) == 1 ? iNN[0] < iNN[1] : iNN[0] > iNN[1];
1374 if ( isOutside != theOutsideNormal )
1375 nbReori += Reorient( face );
1377 } // loop on given faces
1382 //=======================================================================
1383 //function : getBadRate
1385 //=======================================================================
1387 static double getBadRate (const SMDS_MeshElement* theElem,
1388 SMESH::Controls::NumericalFunctorPtr& theCrit)
1390 SMESH::Controls::TSequenceOfXYZ P;
1391 if ( !theElem || !theCrit->GetPoints( theElem, P ))
1393 return theCrit->GetBadRate( theCrit->GetValue( P ), theElem->NbNodes() );
1394 //return theCrit->GetBadRate( theCrit->GetValue( theElem->GetID() ), theElem->NbNodes() );
1397 //=======================================================================
1398 //function : QuadToTri
1399 //purpose : Cut quadrangles into triangles.
1400 // theCrit is used to select a diagonal to cut
1401 //=======================================================================
1403 bool SMESH_MeshEditor::QuadToTri (TIDSortedElemSet & theElems,
1404 SMESH::Controls::NumericalFunctorPtr theCrit)
1406 myLastCreatedElems.Clear();
1407 myLastCreatedNodes.Clear();
1409 if ( !theCrit.get() )
1412 SMESHDS_Mesh * aMesh = GetMeshDS();
1414 Handle(Geom_Surface) surface;
1415 SMESH_MesherHelper helper( *GetMesh() );
1417 TIDSortedElemSet::iterator itElem;
1418 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
1420 const SMDS_MeshElement* elem = *itElem;
1421 if ( !elem || elem->GetType() != SMDSAbs_Face )
1423 if ( elem->NbCornerNodes() != 4 )
1426 // retrieve element nodes
1427 vector< const SMDS_MeshNode* > aNodes( elem->begin_nodes(), elem->end_nodes() );
1429 // compare two sets of possible triangles
1430 double aBadRate1, aBadRate2; // to what extent a set is bad
1431 SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
1432 SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
1433 aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
1435 SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
1436 SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
1437 aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
1439 const int aShapeId = FindShape( elem );
1440 const SMDS_MeshElement* newElem1 = 0;
1441 const SMDS_MeshElement* newElem2 = 0;
1443 if ( !elem->IsQuadratic() ) // split liner quadrangle
1445 // for MaxElementLength2D functor we return minimum diagonal for splitting,
1446 // because aBadRate1=2*len(diagonal 1-3); aBadRate2=2*len(diagonal 2-4)
1447 if ( aBadRate1 <= aBadRate2 ) {
1448 // tr1 + tr2 is better
1449 newElem1 = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
1450 newElem2 = aMesh->AddFace( aNodes[2], aNodes[0], aNodes[1] );
1453 // tr3 + tr4 is better
1454 newElem1 = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
1455 newElem2 = aMesh->AddFace( aNodes[3], aNodes[1], aNodes[2] );
1458 else // split quadratic quadrangle
1460 helper.SetIsQuadratic( true );
1461 helper.SetIsBiQuadratic( aNodes.size() == 9 );
1463 helper.AddTLinks( static_cast< const SMDS_MeshFace* >( elem ));
1464 if ( aNodes.size() == 9 )
1466 helper.SetIsBiQuadratic( true );
1467 if ( aBadRate1 <= aBadRate2 )
1468 helper.AddTLinkNode( aNodes[0], aNodes[2], aNodes[8] );
1470 helper.AddTLinkNode( aNodes[1], aNodes[3], aNodes[8] );
1472 // create a new element
1473 if ( aBadRate1 <= aBadRate2 ) {
1474 newElem1 = helper.AddFace( aNodes[2], aNodes[3], aNodes[0] );
1475 newElem2 = helper.AddFace( aNodes[2], aNodes[0], aNodes[1] );
1478 newElem1 = helper.AddFace( aNodes[3], aNodes[0], aNodes[1] );
1479 newElem2 = helper.AddFace( aNodes[3], aNodes[1], aNodes[2] );
1483 // care of a new element
1485 myLastCreatedElems.Append(newElem1);
1486 myLastCreatedElems.Append(newElem2);
1487 AddToSameGroups( newElem1, elem, aMesh );
1488 AddToSameGroups( newElem2, elem, aMesh );
1490 // put a new triangle on the same shape
1492 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
1493 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
1495 aMesh->RemoveElement( elem );
1500 //=======================================================================
1502 * \brief Split each of given quadrangles into 4 triangles.
1503 * \param theElems - The faces to be splitted. If empty all faces are split.
1505 //=======================================================================
1507 void SMESH_MeshEditor::QuadTo4Tri (TIDSortedElemSet & theElems)
1509 myLastCreatedElems.Clear();
1510 myLastCreatedNodes.Clear();
1512 SMESH_MesherHelper helper( *GetMesh() );
1513 helper.SetElementsOnShape( true );
1515 SMDS_ElemIteratorPtr faceIt;
1516 if ( theElems.empty() ) faceIt = GetMeshDS()->elementsIterator(SMDSAbs_Face);
1517 else faceIt = elemSetIterator( theElems );
1520 gp_XY uv [9]; uv[8] = gp_XY(0,0);
1522 vector< const SMDS_MeshNode* > nodes;
1523 SMESHDS_SubMesh* subMeshDS = 0;
1525 Handle(Geom_Surface) surface;
1526 TopLoc_Location loc;
1528 while ( faceIt->more() )
1530 const SMDS_MeshElement* quad = faceIt->next();
1531 if ( !quad || quad->NbCornerNodes() != 4 )
1534 // get a surface the quad is on
1536 if ( quad->getshapeId() < 1 )
1539 helper.SetSubShape( 0 );
1542 else if ( quad->getshapeId() != helper.GetSubShapeID() )
1544 helper.SetSubShape( quad->getshapeId() );
1545 if ( !helper.GetSubShape().IsNull() &&
1546 helper.GetSubShape().ShapeType() == TopAbs_FACE )
1548 F = TopoDS::Face( helper.GetSubShape() );
1549 surface = BRep_Tool::Surface( F, loc );
1550 subMeshDS = GetMeshDS()->MeshElements( quad->getshapeId() );
1554 helper.SetSubShape( 0 );
1559 // create a central node
1561 const SMDS_MeshNode* nCentral;
1562 nodes.assign( quad->begin_nodes(), quad->end_nodes() );
1564 if ( nodes.size() == 9 )
1566 nCentral = nodes.back();
1573 for ( ; iN < nodes.size(); ++iN )
1574 xyz[ iN ] = SMESH_TNodeXYZ( nodes[ iN ] );
1576 for ( ; iN < 8; ++iN ) // mid-side points of a linear qudrangle
1577 xyz[ iN ] = 0.5 * ( xyz[ iN - 4 ] + xyz[( iN - 3 )%4 ] );
1579 xyz[ 8 ] = helper.calcTFI( 0.5, 0.5,
1580 xyz[0], xyz[1], xyz[2], xyz[3],
1581 xyz[4], xyz[5], xyz[6], xyz[7] );
1585 for ( ; iN < nodes.size(); ++iN )
1586 uv[ iN ] = helper.GetNodeUV( F, nodes[iN], nodes[(iN+2)%4], &checkUV );
1588 for ( ; iN < 8; ++iN ) // UV of mid-side points of a linear qudrangle
1589 uv[ iN ] = helper.GetMiddleUV( surface, uv[ iN - 4 ], uv[( iN - 3 )%4 ] );
1591 uv[ 8 ] = helper.calcTFI( 0.5, 0.5,
1592 uv[0], uv[1], uv[2], uv[3],
1593 uv[4], uv[5], uv[6], uv[7] );
1595 gp_Pnt p = surface->Value( uv[8].X(), uv[8].Y() ).Transformed( loc );
1599 nCentral = helper.AddNode( xyz[8].X(), xyz[8].Y(), xyz[8].Z(), /*id=*/0,
1600 uv[8].X(), uv[8].Y() );
1601 myLastCreatedNodes.Append( nCentral );
1604 // create 4 triangles
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 GetMeshDS()->RemoveFreeElement( quad, subMeshDS, /*fromGroups=*/false );
1613 for ( int i = 0; i < 4; ++i )
1615 SMDS_MeshElement* tria = helper.AddFace( nodes[ i ],
1618 ReplaceElemInGroups( tria, quad, GetMeshDS() );
1619 myLastCreatedElems.Append( tria );
1624 //=======================================================================
1625 //function : BestSplit
1626 //purpose : Find better diagonal for cutting.
1627 //=======================================================================
1629 int SMESH_MeshEditor::BestSplit (const SMDS_MeshElement* theQuad,
1630 SMESH::Controls::NumericalFunctorPtr theCrit)
1632 myLastCreatedElems.Clear();
1633 myLastCreatedNodes.Clear();
1638 if (!theQuad || theQuad->GetType() != SMDSAbs_Face )
1641 if( theQuad->NbNodes()==4 ||
1642 (theQuad->NbNodes()==8 && theQuad->IsQuadratic()) ) {
1644 // retrieve element nodes
1645 const SMDS_MeshNode* aNodes [4];
1646 SMDS_ElemIteratorPtr itN = theQuad->nodesIterator();
1648 //while (itN->more())
1650 aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
1652 // compare two sets of possible triangles
1653 double aBadRate1, aBadRate2; // to what extent a set is bad
1654 SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
1655 SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
1656 aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
1658 SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
1659 SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
1660 aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
1661 // for MaxElementLength2D functor we return minimum diagonal for splitting,
1662 // because aBadRate1=2*len(diagonal 1-3); aBadRate2=2*len(diagonal 2-4)
1663 if (aBadRate1 <= aBadRate2) // tr1 + tr2 is better
1664 return 1; // diagonal 1-3
1666 return 2; // diagonal 2-4
1673 // Methods of splitting volumes into tetra
1675 const int theHexTo5_1[5*4+1] =
1677 0, 1, 2, 5, 0, 4, 5, 7, 0, 2, 3, 7, 2, 5, 6, 7, 0, 5, 2, 7, -1
1679 const int theHexTo5_2[5*4+1] =
1681 1, 2, 3, 6, 1, 4, 5, 6, 0, 1, 3, 4, 3, 4, 6, 7, 1, 3, 4, 6, -1
1683 const int* theHexTo5[2] = { theHexTo5_1, theHexTo5_2 };
1685 const int theHexTo6_1[6*4+1] =
1687 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
1689 const int theHexTo6_2[6*4+1] =
1691 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
1693 const int theHexTo6_3[6*4+1] =
1695 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
1697 const int theHexTo6_4[6*4+1] =
1699 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
1701 const int* theHexTo6[4] = { theHexTo6_1, theHexTo6_2, theHexTo6_3, theHexTo6_4 };
1703 const int thePyraTo2_1[2*4+1] =
1705 0, 1, 2, 4, 0, 2, 3, 4, -1
1707 const int thePyraTo2_2[2*4+1] =
1709 1, 2, 3, 4, 1, 3, 0, 4, -1
1711 const int* thePyraTo2[2] = { thePyraTo2_1, thePyraTo2_2 };
1713 const int thePentaTo3_1[3*4+1] =
1715 0, 1, 2, 3, 1, 3, 4, 2, 2, 3, 4, 5, -1
1717 const int thePentaTo3_2[3*4+1] =
1719 1, 2, 0, 4, 2, 4, 5, 0, 0, 4, 5, 3, -1
1721 const int thePentaTo3_3[3*4+1] =
1723 2, 0, 1, 5, 0, 5, 3, 1, 1, 5, 3, 4, -1
1725 const int thePentaTo3_4[3*4+1] =
1727 0, 1, 2, 3, 1, 3, 4, 5, 2, 3, 1, 5, -1
1729 const int thePentaTo3_5[3*4+1] =
1731 1, 2, 0, 4, 2, 4, 5, 3, 0, 4, 2, 3, -1
1733 const int thePentaTo3_6[3*4+1] =
1735 2, 0, 1, 5, 0, 5, 3, 4, 1, 5, 0, 4, -1
1737 const int* thePentaTo3[6] = { thePentaTo3_1, thePentaTo3_2, thePentaTo3_3,
1738 thePentaTo3_4, thePentaTo3_5, thePentaTo3_6 };
1740 // Methods of splitting hexahedron into prisms
1742 const int theHexTo4Prisms_BT[6*4+1] = // bottom-top
1744 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
1746 const int theHexTo4Prisms_LR[6*4+1] = // left-right
1748 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
1750 const int theHexTo4Prisms_FB[6*4+1] = // front-back
1752 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
1755 const int theHexTo2Prisms_BT_1[6*2+1] =
1757 0, 1, 3, 4, 5, 7, 1, 2, 3, 5, 6, 7, -1
1759 const int theHexTo2Prisms_BT_2[6*2+1] =
1761 0, 1, 2, 4, 5, 6, 0, 2, 3, 4, 6, 7, -1
1763 const int* theHexTo2Prisms_BT[2] = { theHexTo2Prisms_BT_1, theHexTo2Prisms_BT_2 };
1765 const int theHexTo2Prisms_LR_1[6*2+1] =
1767 1, 0, 4, 2, 3, 7, 1, 4, 5, 2, 7, 6, -1
1769 const int theHexTo2Prisms_LR_2[6*2+1] =
1771 1, 0, 4, 2, 3, 7, 1, 4, 5, 2, 7, 6, -1
1773 const int* theHexTo2Prisms_LR[2] = { theHexTo2Prisms_LR_1, theHexTo2Prisms_LR_2 };
1775 const int theHexTo2Prisms_FB_1[6*2+1] =
1777 0, 3, 4, 1, 2, 5, 3, 7, 4, 2, 6, 5, -1
1779 const int theHexTo2Prisms_FB_2[6*2+1] =
1781 0, 3, 7, 1, 2, 7, 0, 7, 4, 1, 6, 5, -1
1783 const int* theHexTo2Prisms_FB[2] = { theHexTo2Prisms_FB_1, theHexTo2Prisms_FB_2 };
1786 struct TTriangleFacet //!< stores indices of three nodes of tetra facet
1789 TTriangleFacet(int n1, int n2, int n3): _n1(n1), _n2(n2), _n3(n3) {}
1790 bool contains(int n) const { return ( n == _n1 || n == _n2 || n == _n3 ); }
1791 bool hasAdjacentVol( const SMDS_MeshElement* elem,
1792 const SMDSAbs_GeometryType geom = SMDSGeom_TETRA) const;
1798 const int* _connectivity; //!< foursomes of tetra connectivy finished by -1
1799 bool _baryNode; //!< additional node is to be created at cell barycenter
1800 bool _ownConn; //!< to delete _connectivity in destructor
1801 map<int, const SMDS_MeshNode*> _faceBaryNode; //!< map face index to node at BC of face
1803 TSplitMethod( int nbTet=0, const int* conn=0, bool addNode=false)
1804 : _nbSplits(nbTet), _nbCorners(4), _connectivity(conn), _baryNode(addNode), _ownConn(false) {}
1805 ~TSplitMethod() { if ( _ownConn ) delete [] _connectivity; _connectivity = 0; }
1806 bool hasFacet( const TTriangleFacet& facet ) const
1808 if ( _nbCorners == 4 )
1810 const int* tetConn = _connectivity;
1811 for ( ; tetConn[0] >= 0; tetConn += 4 )
1812 if (( facet.contains( tetConn[0] ) +
1813 facet.contains( tetConn[1] ) +
1814 facet.contains( tetConn[2] ) +
1815 facet.contains( tetConn[3] )) == 3 )
1818 else // prism, _nbCorners == 6
1820 const int* prismConn = _connectivity;
1821 for ( ; prismConn[0] >= 0; prismConn += 6 )
1823 if (( facet.contains( prismConn[0] ) &&
1824 facet.contains( prismConn[1] ) &&
1825 facet.contains( prismConn[2] ))
1827 ( facet.contains( prismConn[3] ) &&
1828 facet.contains( prismConn[4] ) &&
1829 facet.contains( prismConn[5] )))
1837 //=======================================================================
1839 * \brief return TSplitMethod for the given element to split into tetrahedra
1841 //=======================================================================
1843 TSplitMethod getTetraSplitMethod( SMDS_VolumeTool& vol, const int theMethodFlags)
1845 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
1847 // at HEXA_TO_24 method, each face of volume is split into triangles each based on
1848 // an edge and a face barycenter; tertaherdons are based on triangles and
1849 // a volume barycenter
1850 const bool is24TetMode = ( theMethodFlags == SMESH_MeshEditor::HEXA_TO_24 );
1852 // Find out how adjacent volumes are split
1854 vector < list< TTriangleFacet > > triaSplitsByFace( vol.NbFaces() ); // splits of each side
1855 int hasAdjacentSplits = 0, maxTetConnSize = 0;
1856 for ( int iF = 0; iF < vol.NbFaces(); ++iF )
1858 int nbNodes = vol.NbFaceNodes( iF ) / iQ;
1859 maxTetConnSize += 4 * ( nbNodes - (is24TetMode ? 0 : 2));
1860 if ( nbNodes < 4 ) continue;
1862 list< TTriangleFacet >& triaSplits = triaSplitsByFace[ iF ];
1863 const int* nInd = vol.GetFaceNodesIndices( iF );
1866 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
1867 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
1868 if ( t012.hasAdjacentVol( vol.Element() )) triaSplits.push_back( t012 );
1869 else if ( t123.hasAdjacentVol( vol.Element() )) triaSplits.push_back( t123 );
1873 int iCom = 0; // common node of triangle faces to split into
1874 for ( int iVar = 0; iVar < nbNodes; ++iVar, ++iCom )
1876 TTriangleFacet t012( nInd[ iQ * ( iCom )],
1877 nInd[ iQ * ( (iCom+1)%nbNodes )],
1878 nInd[ iQ * ( (iCom+2)%nbNodes )]);
1879 TTriangleFacet t023( nInd[ iQ * ( iCom )],
1880 nInd[ iQ * ( (iCom+2)%nbNodes )],
1881 nInd[ iQ * ( (iCom+3)%nbNodes )]);
1882 if ( t012.hasAdjacentVol( vol.Element() ) && t023.hasAdjacentVol( vol.Element() ))
1884 triaSplits.push_back( t012 );
1885 triaSplits.push_back( t023 );
1890 if ( !triaSplits.empty() )
1891 hasAdjacentSplits = true;
1894 // Among variants of split method select one compliant with adjacent volumes
1896 TSplitMethod method;
1897 if ( !vol.Element()->IsPoly() && !is24TetMode )
1899 int nbVariants = 2, nbTet = 0;
1900 const int** connVariants = 0;
1901 switch ( vol.Element()->GetEntityType() )
1903 case SMDSEntity_Hexa:
1904 case SMDSEntity_Quad_Hexa:
1905 case SMDSEntity_TriQuad_Hexa:
1906 if ( theMethodFlags == SMESH_MeshEditor::HEXA_TO_5 )
1907 connVariants = theHexTo5, nbTet = 5;
1909 connVariants = theHexTo6, nbTet = 6, nbVariants = 4;
1911 case SMDSEntity_Pyramid:
1912 case SMDSEntity_Quad_Pyramid:
1913 connVariants = thePyraTo2; nbTet = 2;
1915 case SMDSEntity_Penta:
1916 case SMDSEntity_Quad_Penta:
1917 connVariants = thePentaTo3; nbTet = 3; nbVariants = 6;
1922 for ( int variant = 0; variant < nbVariants && method._nbSplits == 0; ++variant )
1924 // check method compliancy with adjacent tetras,
1925 // all found splits must be among facets of tetras described by this method
1926 method = TSplitMethod( nbTet, connVariants[variant] );
1927 if ( hasAdjacentSplits && method._nbSplits > 0 )
1929 bool facetCreated = true;
1930 for ( size_t iF = 0; facetCreated && iF < triaSplitsByFace.size(); ++iF )
1932 list< TTriangleFacet >::const_iterator facet = triaSplitsByFace[iF].begin();
1933 for ( ; facetCreated && facet != triaSplitsByFace[iF].end(); ++facet )
1934 facetCreated = method.hasFacet( *facet );
1936 if ( !facetCreated )
1937 method = TSplitMethod(0); // incompatible method
1941 if ( method._nbSplits < 1 )
1943 // No standard method is applicable, use a generic solution:
1944 // each facet of a volume is split into triangles and
1945 // each of triangles and a volume barycenter form a tetrahedron.
1947 const bool isHex27 = ( vol.Element()->GetEntityType() == SMDSEntity_TriQuad_Hexa );
1949 int* connectivity = new int[ maxTetConnSize + 1 ];
1950 method._connectivity = connectivity;
1951 method._ownConn = true;
1952 method._baryNode = !isHex27; // to create central node or not
1955 int baryCenInd = vol.NbNodes() - int( isHex27 );
1956 for ( int iF = 0; iF < vol.NbFaces(); ++iF )
1958 const int nbNodes = vol.NbFaceNodes( iF ) / iQ;
1959 const int* nInd = vol.GetFaceNodesIndices( iF );
1960 // find common node of triangle facets of tetra to create
1961 int iCommon = 0; // index in linear numeration
1962 const list< TTriangleFacet >& triaSplits = triaSplitsByFace[ iF ];
1963 if ( !triaSplits.empty() )
1966 const TTriangleFacet* facet = &triaSplits.front();
1967 for ( ; iCommon < nbNodes-1 ; ++iCommon )
1968 if ( facet->contains( nInd[ iQ * iCommon ]) &&
1969 facet->contains( nInd[ iQ * ((iCommon+2)%nbNodes) ]))
1972 else if ( nbNodes > 3 && !is24TetMode )
1974 // find the best method of splitting into triangles by aspect ratio
1975 SMESH::Controls::NumericalFunctorPtr aspectRatio( new SMESH::Controls::AspectRatio);
1976 map< double, int > badness2iCommon;
1977 const SMDS_MeshNode** nodes = vol.GetFaceNodes( iF );
1978 int nbVariants = ( nbNodes == 4 ? 2 : nbNodes );
1979 for ( int iVar = 0; iVar < nbVariants; ++iVar, ++iCommon )
1982 for ( int iLast = iCommon+2; iLast < iCommon+nbNodes; ++iLast )
1984 SMDS_FaceOfNodes tria ( nodes[ iQ*( iCommon )],
1985 nodes[ iQ*((iLast-1)%nbNodes)],
1986 nodes[ iQ*((iLast )%nbNodes)]);
1987 badness += getBadRate( &tria, aspectRatio );
1989 badness2iCommon.insert( make_pair( badness, iCommon ));
1991 // use iCommon with lowest badness
1992 iCommon = badness2iCommon.begin()->second;
1994 if ( iCommon >= nbNodes )
1995 iCommon = 0; // something wrong
1997 // fill connectivity of tetrahedra based on a current face
1998 int nbTet = nbNodes - 2;
1999 if ( is24TetMode && nbNodes > 3 && triaSplits.empty())
2004 faceBaryCenInd = vol.GetCenterNodeIndex( iF );
2005 method._faceBaryNode[ iF ] = vol.GetNodes()[ faceBaryCenInd ];
2009 method._faceBaryNode[ iF ] = 0;
2010 faceBaryCenInd = baryCenInd + method._faceBaryNode.size();
2013 for ( int i = 0; i < nbTet; ++i )
2015 int i1 = i, i2 = (i+1) % nbNodes;
2016 if ( !vol.IsFaceExternal( iF )) swap( i1, i2 );
2017 connectivity[ connSize++ ] = nInd[ iQ * i1 ];
2018 connectivity[ connSize++ ] = nInd[ iQ * i2 ];
2019 connectivity[ connSize++ ] = faceBaryCenInd;
2020 connectivity[ connSize++ ] = baryCenInd;
2025 for ( int i = 0; i < nbTet; ++i )
2027 int i1 = (iCommon+1+i) % nbNodes, i2 = (iCommon+2+i) % nbNodes;
2028 if ( !vol.IsFaceExternal( iF )) swap( i1, i2 );
2029 connectivity[ connSize++ ] = nInd[ iQ * iCommon ];
2030 connectivity[ connSize++ ] = nInd[ iQ * i1 ];
2031 connectivity[ connSize++ ] = nInd[ iQ * i2 ];
2032 connectivity[ connSize++ ] = baryCenInd;
2035 method._nbSplits += nbTet;
2037 } // loop on volume faces
2039 connectivity[ connSize++ ] = -1;
2041 } // end of generic solution
2045 //=======================================================================
2047 * \brief return TSplitMethod to split haxhedron into prisms
2049 //=======================================================================
2051 TSplitMethod getPrismSplitMethod( SMDS_VolumeTool& vol,
2052 const int methodFlags,
2053 const int facetToSplit)
2055 // order of facets in HEX according to SMDS_VolumeTool::Hexa_F :
2057 const int iF = ( facetToSplit < 2 ) ? 0 : 1 + ( facetToSplit-2 ) % 2; // [0,1,2]
2059 if ( methodFlags == SMESH_MeshEditor::HEXA_TO_4_PRISMS )
2061 static TSplitMethod to4methods[4]; // order BT, LR, FB
2062 if ( to4methods[iF]._nbSplits == 0 )
2066 to4methods[iF]._connectivity = theHexTo4Prisms_BT;
2067 to4methods[iF]._faceBaryNode[ 0 ] = 0;
2068 to4methods[iF]._faceBaryNode[ 1 ] = 0;
2071 to4methods[iF]._connectivity = theHexTo4Prisms_LR;
2072 to4methods[iF]._faceBaryNode[ 2 ] = 0;
2073 to4methods[iF]._faceBaryNode[ 4 ] = 0;
2076 to4methods[iF]._connectivity = theHexTo4Prisms_FB;
2077 to4methods[iF]._faceBaryNode[ 3 ] = 0;
2078 to4methods[iF]._faceBaryNode[ 5 ] = 0;
2080 default: return to4methods[3];
2082 to4methods[iF]._nbSplits = 4;
2083 to4methods[iF]._nbCorners = 6;
2085 return to4methods[iF];
2087 // else if ( methodFlags == HEXA_TO_2_PRISMS )
2089 TSplitMethod method;
2091 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
2093 const int nbVariants = 2, nbSplits = 2;
2094 const int** connVariants = 0;
2096 case 0: connVariants = theHexTo2Prisms_BT; break;
2097 case 1: connVariants = theHexTo2Prisms_LR; break;
2098 case 2: connVariants = theHexTo2Prisms_FB; break;
2099 default: return method;
2102 // look for prisms adjacent via facetToSplit and an opposite one
2103 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2105 int iFacet = is2nd ? vol.GetOppFaceIndexOfHex( facetToSplit ) : facetToSplit;
2106 int nbNodes = vol.NbFaceNodes( iFacet ) / iQ;
2107 if ( nbNodes != 4 ) return method;
2109 const int* nInd = vol.GetFaceNodesIndices( iFacet );
2110 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
2111 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
2113 if ( t012.hasAdjacentVol( vol.Element(), SMDSGeom_PENTA ))
2115 else if ( t123.hasAdjacentVol( vol.Element(), SMDSGeom_PENTA ))
2120 // there are adjacent prism
2121 for ( int variant = 0; variant < nbVariants; ++variant )
2123 // check method compliancy with adjacent prisms,
2124 // the found prism facets must be among facets of prisms described by current method
2125 method._nbSplits = nbSplits;
2126 method._nbCorners = 6;
2127 method._connectivity = connVariants[ variant ];
2128 if ( method.hasFacet( *t ))
2133 // No adjacent prisms. Select a variant with a best aspect ratio.
2135 double badness[2] = { 0., 0. };
2136 static SMESH::Controls::NumericalFunctorPtr aspectRatio( new SMESH::Controls::AspectRatio);
2137 const SMDS_MeshNode** nodes = vol.GetNodes();
2138 for ( int variant = 0; variant < nbVariants; ++variant )
2139 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2141 int iFacet = is2nd ? vol.GetOppFaceIndexOfHex( facetToSplit ) : facetToSplit;
2142 const int* nInd = vol.GetFaceNodesIndices( iFacet );
2144 method._connectivity = connVariants[ variant ];
2145 TTriangleFacet t012( nInd[0*iQ], nInd[1*iQ], nInd[2*iQ] );
2146 TTriangleFacet t123( nInd[1*iQ], nInd[2*iQ], nInd[3*iQ] );
2147 TTriangleFacet* t = ( method.hasFacet( t012 )) ? & t012 : & t123;
2149 SMDS_FaceOfNodes tria ( nodes[ t->_n1 ],
2152 badness[ variant ] += getBadRate( &tria, aspectRatio );
2154 const int iBetter = ( badness[1] < badness[0] && badness[0]-badness[1] > 0.1 * badness[0] );
2156 method._nbSplits = nbSplits;
2157 method._nbCorners = 6;
2158 method._connectivity = connVariants[ iBetter ];
2163 //================================================================================
2165 * \brief Check if there is a tetraherdon adjacent to the given element via this facet
2167 //================================================================================
2169 bool TTriangleFacet::hasAdjacentVol( const SMDS_MeshElement* elem,
2170 const SMDSAbs_GeometryType geom ) const
2172 // find the tetrahedron including the three nodes of facet
2173 const SMDS_MeshNode* n1 = elem->GetNode(_n1);
2174 const SMDS_MeshNode* n2 = elem->GetNode(_n2);
2175 const SMDS_MeshNode* n3 = elem->GetNode(_n3);
2176 SMDS_ElemIteratorPtr volIt1 = n1->GetInverseElementIterator(SMDSAbs_Volume);
2177 while ( volIt1->more() )
2179 const SMDS_MeshElement* v = volIt1->next();
2180 if ( v->GetGeomType() != geom )
2182 const int lastCornerInd = v->NbCornerNodes() - 1;
2183 if ( v->IsQuadratic() && v->GetNodeIndex( n1 ) > lastCornerInd )
2184 continue; // medium node not allowed
2185 const int ind2 = v->GetNodeIndex( n2 );
2186 if ( ind2 < 0 || lastCornerInd < ind2 )
2188 const int ind3 = v->GetNodeIndex( n3 );
2189 if ( ind3 < 0 || lastCornerInd < ind3 )
2196 //=======================================================================
2198 * \brief A key of a face of volume
2200 //=======================================================================
2202 struct TVolumeFaceKey: pair< pair< int, int>, pair< int, int> >
2204 TVolumeFaceKey( SMDS_VolumeTool& vol, int iF )
2206 TIDSortedNodeSet sortedNodes;
2207 const int iQ = vol.Element()->IsQuadratic() ? 2 : 1;
2208 int nbNodes = vol.NbFaceNodes( iF );
2209 const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iF );
2210 for ( int i = 0; i < nbNodes; i += iQ )
2211 sortedNodes.insert( fNodes[i] );
2212 TIDSortedNodeSet::iterator n = sortedNodes.begin();
2213 first.first = (*(n++))->GetID();
2214 first.second = (*(n++))->GetID();
2215 second.first = (*(n++))->GetID();
2216 second.second = ( sortedNodes.size() > 3 ) ? (*(n++))->GetID() : 0;
2221 //=======================================================================
2222 //function : SplitVolumes
2223 //purpose : Split volume elements into tetrahedra or prisms.
2224 // If facet ID < 0, element is split into tetrahedra,
2225 // else a hexahedron is split into prisms so that the given facet is
2226 // split into triangles
2227 //=======================================================================
2229 void SMESH_MeshEditor::SplitVolumes (const TFacetOfElem & theElems,
2230 const int theMethodFlags)
2232 SMDS_VolumeTool volTool;
2233 SMESH_MesherHelper helper( *GetMesh()), fHelper(*GetMesh());
2234 fHelper.ToFixNodeParameters( true );
2236 SMESHDS_SubMesh* subMesh = 0;//GetMeshDS()->MeshElements(1);
2237 SMESHDS_SubMesh* fSubMesh = 0;//subMesh;
2239 SMESH_SequenceOfElemPtr newNodes, newElems;
2241 // map face of volume to it's baricenrtic node
2242 map< TVolumeFaceKey, const SMDS_MeshNode* > volFace2BaryNode;
2244 vector<const SMDS_MeshElement* > splitVols;
2246 TFacetOfElem::const_iterator elem2facet = theElems.begin();
2247 for ( ; elem2facet != theElems.end(); ++elem2facet )
2249 const SMDS_MeshElement* elem = elem2facet->first;
2250 const int facetToSplit = elem2facet->second;
2251 if ( elem->GetType() != SMDSAbs_Volume )
2253 const SMDSAbs_EntityType geomType = elem->GetEntityType();
2254 if ( geomType == SMDSEntity_Tetra || geomType == SMDSEntity_Quad_Tetra )
2257 if ( !volTool.Set( elem, /*ignoreCentralNodes=*/false )) continue; // strange...
2259 TSplitMethod splitMethod = ( facetToSplit < 0 ?
2260 getTetraSplitMethod( volTool, theMethodFlags ) :
2261 getPrismSplitMethod( volTool, theMethodFlags, facetToSplit ));
2262 if ( splitMethod._nbSplits < 1 ) continue;
2264 // find submesh to add new tetras to
2265 if ( !subMesh || !subMesh->Contains( elem ))
2267 int shapeID = FindShape( elem );
2268 helper.SetSubShape( shapeID ); // helper will add tetras to the found submesh
2269 subMesh = GetMeshDS()->MeshElements( shapeID );
2272 if ( elem->IsQuadratic() )
2275 // add quadratic links to the helper
2276 for ( int iF = 0; iF < volTool.NbFaces(); ++iF )
2278 const SMDS_MeshNode** fNodes = volTool.GetFaceNodes( iF );
2279 int nbN = volTool.NbFaceNodes( iF ) - bool( volTool.GetCenterNodeIndex(iF) > 0 );
2280 for ( int iN = 0; iN < nbN; iN += iQ )
2281 helper.AddTLinkNode( fNodes[iN], fNodes[iN+2], fNodes[iN+1] );
2283 helper.SetIsQuadratic( true );
2288 helper.SetIsQuadratic( false );
2290 vector<const SMDS_MeshNode*> nodes( volTool.GetNodes(),
2291 volTool.GetNodes() + elem->NbNodes() );
2292 helper.SetElementsOnShape( true );
2293 if ( splitMethod._baryNode )
2295 // make a node at barycenter
2296 volTool.GetBaryCenter( bc[0], bc[1], bc[2] );
2297 SMDS_MeshNode* gcNode = helper.AddNode( bc[0], bc[1], bc[2] );
2298 nodes.push_back( gcNode );
2299 newNodes.Append( gcNode );
2301 if ( !splitMethod._faceBaryNode.empty() )
2303 // make or find baricentric nodes of faces
2304 map<int, const SMDS_MeshNode*>::iterator iF_n = splitMethod._faceBaryNode.begin();
2305 for ( ; iF_n != splitMethod._faceBaryNode.end(); ++iF_n )
2307 map< TVolumeFaceKey, const SMDS_MeshNode* >::iterator f_n =
2308 volFace2BaryNode.insert
2309 ( make_pair( TVolumeFaceKey( volTool,iF_n->first ), iF_n->second )).first;
2312 volTool.GetFaceBaryCenter( iF_n->first, bc[0], bc[1], bc[2] );
2313 newNodes.Append( f_n->second = helper.AddNode( bc[0], bc[1], bc[2] ));
2315 nodes.push_back( iF_n->second = f_n->second );
2320 splitVols.resize( splitMethod._nbSplits ); // splits of a volume
2321 const int* volConn = splitMethod._connectivity;
2322 if ( splitMethod._nbCorners == 4 ) // tetra
2323 for ( int i = 0; i < splitMethod._nbSplits; ++i, volConn += splitMethod._nbCorners )
2324 newElems.Append( splitVols[ i ] = helper.AddVolume( nodes[ volConn[0] ],
2325 nodes[ volConn[1] ],
2326 nodes[ volConn[2] ],
2327 nodes[ volConn[3] ]));
2329 for ( int i = 0; i < splitMethod._nbSplits; ++i, volConn += splitMethod._nbCorners )
2330 newElems.Append( splitVols[ i ] = helper.AddVolume( nodes[ volConn[0] ],
2331 nodes[ volConn[1] ],
2332 nodes[ volConn[2] ],
2333 nodes[ volConn[3] ],
2334 nodes[ volConn[4] ],
2335 nodes[ volConn[5] ]));
2337 ReplaceElemInGroups( elem, splitVols, GetMeshDS() );
2339 // Split faces on sides of the split volume
2341 const SMDS_MeshNode** volNodes = volTool.GetNodes();
2342 for ( int iF = 0; iF < volTool.NbFaces(); ++iF )
2344 const int nbNodes = volTool.NbFaceNodes( iF ) / iQ;
2345 if ( nbNodes < 4 ) continue;
2347 // find an existing face
2348 vector<const SMDS_MeshNode*> fNodes( volTool.GetFaceNodes( iF ),
2349 volTool.GetFaceNodes( iF ) + volTool.NbFaceNodes( iF ));
2350 while ( const SMDS_MeshElement* face = GetMeshDS()->FindElement( fNodes, SMDSAbs_Face,
2351 /*noMedium=*/false))
2354 helper.SetElementsOnShape( false );
2355 vector< const SMDS_MeshElement* > triangles;
2357 // find submesh to add new triangles in
2358 if ( !fSubMesh || !fSubMesh->Contains( face ))
2360 int shapeID = FindShape( face );
2361 fSubMesh = GetMeshDS()->MeshElements( shapeID );
2363 map<int, const SMDS_MeshNode*>::iterator iF_n = splitMethod._faceBaryNode.find(iF);
2364 if ( iF_n != splitMethod._faceBaryNode.end() )
2366 const SMDS_MeshNode *baryNode = iF_n->second;
2367 for ( int iN = 0; iN < nbNodes*iQ; iN += iQ )
2369 const SMDS_MeshNode* n1 = fNodes[iN];
2370 const SMDS_MeshNode *n2 = fNodes[(iN+iQ)%(nbNodes*iQ)];
2371 const SMDS_MeshNode *n3 = baryNode;
2372 if ( !volTool.IsFaceExternal( iF ))
2374 triangles.push_back( helper.AddFace( n1,n2,n3 ));
2376 if ( fSubMesh ) // update position of the bary node on geometry
2379 subMesh->RemoveNode( baryNode, false );
2380 GetMeshDS()->SetNodeOnFace( baryNode, fSubMesh->GetID() );
2381 const TopoDS_Shape& s = GetMeshDS()->IndexToShape( fSubMesh->GetID() );
2382 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2384 fHelper.SetSubShape( s );
2385 gp_XY uv( 1e100, 1e100 );
2387 if ( !fHelper.CheckNodeUV( TopoDS::Face( s ), baryNode,
2388 uv, /*tol=*/1e-7, /*force=*/true, distXYZ ) &&
2391 // node is too far from the surface
2392 GetMeshDS()->MoveNode( baryNode, distXYZ[1], distXYZ[2], distXYZ[3] );
2393 const_cast<SMDS_MeshNode*>( baryNode )->SetPosition
2394 ( SMDS_PositionPtr( new SMDS_FacePosition( uv.X(), uv.Y() )));
2401 // among possible triangles create ones described by split method
2402 const int* nInd = volTool.GetFaceNodesIndices( iF );
2403 int nbVariants = ( nbNodes == 4 ? 2 : nbNodes );
2404 int iCom = 0; // common node of triangle faces to split into
2405 list< TTriangleFacet > facets;
2406 for ( int iVar = 0; iVar < nbVariants; ++iVar, ++iCom )
2408 TTriangleFacet t012( nInd[ iQ * ( iCom )],
2409 nInd[ iQ * ( (iCom+1)%nbNodes )],
2410 nInd[ iQ * ( (iCom+2)%nbNodes )]);
2411 TTriangleFacet t023( nInd[ iQ * ( iCom )],
2412 nInd[ iQ * ( (iCom+2)%nbNodes )],
2413 nInd[ iQ * ( (iCom+3)%nbNodes )]);
2414 if ( splitMethod.hasFacet( t012 ) && splitMethod.hasFacet( t023 ))
2416 facets.push_back( t012 );
2417 facets.push_back( t023 );
2418 for ( int iLast = iCom+4; iLast < iCom+nbNodes; ++iLast )
2419 facets.push_back( TTriangleFacet( nInd[ iQ * ( iCom )],
2420 nInd[ iQ * ((iLast-1)%nbNodes )],
2421 nInd[ iQ * ((iLast )%nbNodes )]));
2425 list< TTriangleFacet >::iterator facet = facets.begin();
2426 if ( facet == facets.end() )
2428 for ( ; facet != facets.end(); ++facet )
2430 if ( !volTool.IsFaceExternal( iF ))
2431 swap( facet->_n2, facet->_n3 );
2432 triangles.push_back( helper.AddFace( volNodes[ facet->_n1 ],
2433 volNodes[ facet->_n2 ],
2434 volNodes[ facet->_n3 ]));
2437 for ( size_t i = 0; i < triangles.size(); ++i )
2439 if ( !triangles[ i ]) continue;
2441 fSubMesh->AddElement( triangles[ i ]);
2442 newElems.Append( triangles[ i ]);
2444 ReplaceElemInGroups( face, triangles, GetMeshDS() );
2445 GetMeshDS()->RemoveFreeElement( face, fSubMesh, /*fromGroups=*/false );
2447 } // while a face based on facet nodes exists
2448 } // loop on volume faces to split them into triangles
2450 GetMeshDS()->RemoveFreeElement( elem, subMesh, /*fromGroups=*/false );
2452 if ( geomType == SMDSEntity_TriQuad_Hexa )
2454 // remove medium nodes that could become free
2455 for ( int i = 20; i < volTool.NbNodes(); ++i )
2456 if ( volNodes[i]->NbInverseElements() == 0 )
2457 GetMeshDS()->RemoveNode( volNodes[i] );
2459 } // loop on volumes to split
2461 myLastCreatedNodes = newNodes;
2462 myLastCreatedElems = newElems;
2465 //=======================================================================
2466 //function : GetHexaFacetsToSplit
2467 //purpose : For hexahedra that will be split into prisms, finds facets to
2468 // split into triangles. Only hexahedra adjacent to the one closest
2469 // to theFacetNormal.Location() are returned.
2470 //param [in,out] theHexas - the hexahedra
2471 //param [in] theFacetNormal - facet normal
2472 //param [out] theFacets - the hexahedra and found facet IDs
2473 //=======================================================================
2475 void SMESH_MeshEditor::GetHexaFacetsToSplit( TIDSortedElemSet& theHexas,
2476 const gp_Ax1& theFacetNormal,
2477 TFacetOfElem & theFacets)
2479 #define THIS_METHOD "SMESH_MeshEditor::GetHexaFacetsToSplit(): "
2481 // Find a hexa closest to the location of theFacetNormal
2483 const SMDS_MeshElement* startHex;
2485 // get SMDS_ElemIteratorPtr on theHexas
2486 typedef const SMDS_MeshElement* TValue;
2487 typedef TIDSortedElemSet::iterator TSetIterator;
2488 typedef SMDS::SimpleAccessor<TValue,TSetIterator> TAccesor;
2489 typedef SMDS_MeshElement::GeomFilter TFilter;
2490 typedef SMDS_SetIterator < TValue, TSetIterator, TAccesor, TFilter > TElemSetIter;
2491 SMDS_ElemIteratorPtr elemIt = SMDS_ElemIteratorPtr
2492 ( new TElemSetIter( theHexas.begin(),
2494 SMDS_MeshElement::GeomFilter( SMDSGeom_HEXA )));
2496 SMESH_ElementSearcher* searcher =
2497 SMESH_MeshAlgos::GetElementSearcher( *myMesh->GetMeshDS(), elemIt );
2499 startHex = searcher->FindClosestTo( theFacetNormal.Location(), SMDSAbs_Volume );
2504 throw SALOME_Exception( THIS_METHOD "startHex not found");
2507 // Select a facet of startHex by theFacetNormal
2509 SMDS_VolumeTool vTool( startHex );
2510 double norm[3], dot, maxDot = 0;
2512 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2513 if ( vTool.GetFaceNormal( iF, norm[0], norm[1], norm[2] ))
2515 dot = Abs( theFacetNormal.Direction().Dot( gp_Dir( norm[0], norm[1], norm[2] )));
2523 throw SALOME_Exception( THIS_METHOD "facet of startHex not found");
2525 // Fill theFacets starting from facetID of startHex
2527 // facets used for searching of volumes adjacent to already treated ones
2528 typedef pair< TFacetOfElem::iterator, int > TElemFacets;
2529 typedef map< TVolumeFaceKey, TElemFacets > TFacetMap;
2530 TFacetMap facetsToCheck;
2532 set<const SMDS_MeshNode*> facetNodes;
2533 const SMDS_MeshElement* curHex;
2535 const bool allHex = ((int) theHexas.size() == myMesh->NbHexas() );
2539 // move in two directions from startHex via facetID
2540 for ( int is2nd = 0; is2nd < 2; ++is2nd )
2543 int curFacet = facetID;
2544 if ( is2nd ) // do not treat startHex twice
2546 vTool.Set( curHex );
2547 if ( vTool.IsFreeFace( curFacet, &curHex ))
2553 vTool.GetFaceNodes( curFacet, facetNodes );
2554 vTool.Set( curHex );
2555 curFacet = vTool.GetFaceIndex( facetNodes );
2560 // store a facet to split
2561 if ( curHex->GetGeomType() != SMDSGeom_HEXA )
2563 theFacets.insert( make_pair( curHex, -1 ));
2566 if ( !allHex && !theHexas.count( curHex ))
2569 pair< TFacetOfElem::iterator, bool > facetIt2isNew =
2570 theFacets.insert( make_pair( curHex, curFacet ));
2571 if ( !facetIt2isNew.second )
2574 // remember not-to-split facets in facetsToCheck
2575 int oppFacet = vTool.GetOppFaceIndexOfHex( curFacet );
2576 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2578 if ( iF == curFacet && iF == oppFacet )
2580 TVolumeFaceKey facetKey ( vTool, iF );
2581 TElemFacets elemFacet( facetIt2isNew.first, iF );
2582 pair< TFacetMap::iterator, bool > it2isnew =
2583 facetsToCheck.insert( make_pair( facetKey, elemFacet ));
2584 if ( !it2isnew.second )
2585 facetsToCheck.erase( it2isnew.first ); // adjacent hex already checked
2587 // pass to a volume adjacent via oppFacet
2588 if ( vTool.IsFreeFace( oppFacet, &curHex ))
2594 // get a new curFacet
2595 vTool.GetFaceNodes( oppFacet, facetNodes );
2596 vTool.Set( curHex );
2597 curFacet = vTool.GetFaceIndex( facetNodes, /*hint=*/curFacet );
2600 } // move in two directions from startHex via facetID
2602 // Find a new startHex by facetsToCheck
2606 TFacetMap::iterator fIt = facetsToCheck.begin();
2607 while ( !startHex && fIt != facetsToCheck.end() )
2609 const TElemFacets& elemFacets = fIt->second;
2610 const SMDS_MeshElement* hex = elemFacets.first->first;
2611 int splitFacet = elemFacets.first->second;
2612 int lateralFacet = elemFacets.second;
2613 facetsToCheck.erase( fIt );
2614 fIt = facetsToCheck.begin();
2617 if ( vTool.IsFreeFace( lateralFacet, &curHex ) ||
2618 curHex->GetGeomType() != SMDSGeom_HEXA )
2620 if ( !allHex && !theHexas.count( curHex ))
2625 // find a facet of startHex to split
2627 set<const SMDS_MeshNode*> lateralNodes;
2628 vTool.GetFaceNodes( lateralFacet, lateralNodes );
2629 vTool.GetFaceNodes( splitFacet, facetNodes );
2630 int oppLateralFacet = vTool.GetOppFaceIndexOfHex( lateralFacet );
2631 vTool.Set( startHex );
2632 lateralFacet = vTool.GetFaceIndex( lateralNodes, oppLateralFacet );
2634 // look for a facet of startHex having common nodes with facetNodes
2635 // but not lateralFacet
2636 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
2638 if ( iF == lateralFacet )
2640 int nbCommonNodes = 0;
2641 const SMDS_MeshNode** nn = vTool.GetFaceNodes( iF );
2642 for ( int iN = 0, nbN = vTool.NbFaceNodes( iF ); iN < nbN; ++iN )
2643 nbCommonNodes += facetNodes.count( nn[ iN ]);
2645 if ( nbCommonNodes >= 2 )
2652 throw SALOME_Exception( THIS_METHOD "facet of a new startHex not found");
2654 } // while ( startHex )
2661 //================================================================================
2663 * \brief Selects nodes of several elements according to a given interlace
2664 * \param [in] srcNodes - nodes to select from
2665 * \param [out] tgtNodesVec - array of nodes of several elements to fill in
2666 * \param [in] interlace - indices of nodes for all elements
2667 * \param [in] nbElems - nb of elements
2668 * \param [in] nbNodes - nb of nodes in each element
2669 * \param [in] mesh - the mesh
2670 * \param [out] elemQueue - a list to push elements found by the selected nodes
2671 * \param [in] type - type of elements to look for
2673 //================================================================================
2675 void selectNodes( const vector< const SMDS_MeshNode* >& srcNodes,
2676 vector< const SMDS_MeshNode* >* tgtNodesVec,
2677 const int* interlace,
2680 SMESHDS_Mesh* mesh = 0,
2681 list< const SMDS_MeshElement* >* elemQueue=0,
2682 SMDSAbs_ElementType type=SMDSAbs_All)
2684 for ( int iE = 0; iE < nbElems; ++iE )
2686 vector< const SMDS_MeshNode* >& elemNodes = tgtNodesVec[iE];
2687 const int* select = & interlace[iE*nbNodes];
2688 elemNodes.resize( nbNodes );
2689 for ( int iN = 0; iN < nbNodes; ++iN )
2690 elemNodes[iN] = srcNodes[ select[ iN ]];
2692 const SMDS_MeshElement* e;
2694 for ( int iE = 0; iE < nbElems; ++iE )
2695 if (( e = mesh->FindElement( tgtNodesVec[iE], type, /*noMedium=*/false)))
2696 elemQueue->push_back( e );
2700 //=======================================================================
2702 * Split bi-quadratic elements into linear ones without creation of additional nodes
2703 * - bi-quadratic triangle will be split into 3 linear quadrangles;
2704 * - bi-quadratic quadrangle will be split into 4 linear quadrangles;
2705 * - tri-quadratic hexahedron will be split into 8 linear hexahedra;
2706 * Quadratic elements of lower dimension adjacent to the split bi-quadratic element
2707 * will be split in order to keep the mesh conformal.
2708 * \param elems - elements to split
2710 //=======================================================================
2712 void SMESH_MeshEditor::SplitBiQuadraticIntoLinear(TIDSortedElemSet& theElems)
2714 vector< const SMDS_MeshNode* > elemNodes(27), subNodes[12], splitNodes[8];
2715 vector<const SMDS_MeshElement* > splitElems;
2716 list< const SMDS_MeshElement* > elemQueue;
2717 list< const SMDS_MeshElement* >::iterator elemIt;
2719 SMESHDS_Mesh * mesh = GetMeshDS();
2720 ElemFeatures *elemType, hexaType(SMDSAbs_Volume), quadType(SMDSAbs_Face), segType(SMDSAbs_Edge);
2721 int nbElems, nbNodes;
2723 TIDSortedElemSet::iterator elemSetIt = theElems.begin();
2724 for ( ; elemSetIt != theElems.end(); ++elemSetIt )
2727 elemQueue.push_back( *elemSetIt );
2728 for ( elemIt = elemQueue.begin(); elemIt != elemQueue.end(); ++elemIt )
2730 const SMDS_MeshElement* elem = *elemIt;
2731 switch( elem->GetEntityType() )
2733 case SMDSEntity_TriQuad_Hexa: // HEX27
2735 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2736 nbElems = nbNodes = 8;
2737 elemType = & hexaType;
2739 // get nodes for new elements
2740 static int vInd[8][8] = {{ 0,8,20,11, 16,21,26,24 },
2741 { 1,9,20,8, 17,22,26,21 },
2742 { 2,10,20,9, 18,23,26,22 },
2743 { 3,11,20,10, 19,24,26,23 },
2744 { 16,21,26,24, 4,12,25,15 },
2745 { 17,22,26,21, 5,13,25,12 },
2746 { 18,23,26,22, 6,14,25,13 },
2747 { 19,24,26,23, 7,15,25,14 }};
2748 selectNodes( elemNodes, & splitNodes[0], &vInd[0][0], nbElems, nbNodes );
2750 // add boundary faces to elemQueue
2751 static int fInd[6][9] = {{ 0,1,2,3, 8,9,10,11, 20 },
2752 { 4,5,6,7, 12,13,14,15, 25 },
2753 { 0,1,5,4, 8,17,12,16, 21 },
2754 { 1,2,6,5, 9,18,13,17, 22 },
2755 { 2,3,7,6, 10,19,14,18, 23 },
2756 { 3,0,4,7, 11,16,15,19, 24 }};
2757 selectNodes( elemNodes, & subNodes[0], &fInd[0][0], 6,9, mesh, &elemQueue, SMDSAbs_Face );
2759 // add boundary segments to elemQueue
2760 static int eInd[12][3] = {{ 0,1,8 }, { 1,2,9 }, { 2,3,10 }, { 3,0,11 },
2761 { 4,5,12}, { 5,6,13}, { 6,7,14 }, { 7,4,15 },
2762 { 0,4,16}, { 1,5,17}, { 2,6,18 }, { 3,7,19 }};
2763 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 12,3, mesh, &elemQueue, SMDSAbs_Edge );
2766 case SMDSEntity_BiQuad_Triangle: // TRIA7
2768 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2771 elemType = & quadType;
2773 // get nodes for new elements
2774 static int fInd[3][4] = {{ 0,3,6,5 }, { 1,4,6,3 }, { 2,5,6,4 }};
2775 selectNodes( elemNodes, & splitNodes[0], &fInd[0][0], nbElems, nbNodes );
2777 // add boundary segments to elemQueue
2778 static int eInd[3][3] = {{ 0,1,3 }, { 1,2,4 }, { 2,0,5 }};
2779 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 3,3, mesh, &elemQueue, SMDSAbs_Edge );
2782 case SMDSEntity_BiQuad_Quadrangle: // QUAD9
2784 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2787 elemType = & quadType;
2789 // get nodes for new elements
2790 static int fInd[4][4] = {{ 0,4,8,7 }, { 1,5,8,4 }, { 2,6,8,5 }, { 3,7,8,6 }};
2791 selectNodes( elemNodes, & splitNodes[0], &fInd[0][0], nbElems, nbNodes );
2793 // add boundary segments to elemQueue
2794 static int eInd[4][3] = {{ 0,1,4 }, { 1,2,5 }, { 2,3,6 }, { 3,0,7 }};
2795 selectNodes( elemNodes, & subNodes[0], &eInd[0][0], 4,3, mesh, &elemQueue, SMDSAbs_Edge );
2798 case SMDSEntity_Quad_Edge:
2800 if ( elemIt == elemQueue.begin() )
2801 continue; // an elem is in theElems
2802 elemNodes.assign( elem->begin_nodes(), elem->end_nodes() );
2805 elemType = & segType;
2807 // get nodes for new elements
2808 static int eInd[2][2] = {{ 0,2 }, { 2,1 }};
2809 selectNodes( elemNodes, & splitNodes[0], &eInd[0][0], nbElems, nbNodes );
2813 } // switch( elem->GetEntityType() )
2815 // Create new elements
2817 SMESHDS_SubMesh* subMesh = mesh->MeshElements( elem->getshapeId() );
2821 //elemType->SetID( elem->GetID() ); // create an elem with the same ID as a removed one
2822 mesh->RemoveFreeElement( elem, subMesh, /*fromGroups=*/false );
2823 //splitElems.push_back( AddElement( splitNodes[ 0 ], *elemType ));
2824 //elemType->SetID( -1 );
2826 for ( int iE = 0; iE < nbElems; ++iE )
2827 splitElems.push_back( AddElement( splitNodes[ iE ], *elemType ));
2830 ReplaceElemInGroups( elem, splitElems, mesh );
2833 for ( size_t i = 0; i < splitElems.size(); ++i )
2834 subMesh->AddElement( splitElems[i] );
2839 //=======================================================================
2840 //function : AddToSameGroups
2841 //purpose : add elemToAdd to the groups the elemInGroups belongs to
2842 //=======================================================================
2844 void SMESH_MeshEditor::AddToSameGroups (const SMDS_MeshElement* elemToAdd,
2845 const SMDS_MeshElement* elemInGroups,
2846 SMESHDS_Mesh * aMesh)
2848 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2849 if (!groups.empty()) {
2850 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2851 for ( ; grIt != groups.end(); grIt++ ) {
2852 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2853 if ( group && group->Contains( elemInGroups ))
2854 group->SMDSGroup().Add( elemToAdd );
2860 //=======================================================================
2861 //function : RemoveElemFromGroups
2862 //purpose : Remove removeelem to the groups the elemInGroups belongs to
2863 //=======================================================================
2864 void SMESH_MeshEditor::RemoveElemFromGroups (const SMDS_MeshElement* removeelem,
2865 SMESHDS_Mesh * aMesh)
2867 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2868 if (!groups.empty())
2870 set<SMESHDS_GroupBase*>::const_iterator GrIt = groups.begin();
2871 for (; GrIt != groups.end(); GrIt++)
2873 SMESHDS_Group* grp = dynamic_cast<SMESHDS_Group*>(*GrIt);
2874 if (!grp || grp->IsEmpty()) continue;
2875 grp->SMDSGroup().Remove(removeelem);
2880 //================================================================================
2882 * \brief Replace elemToRm by elemToAdd in the all groups
2884 //================================================================================
2886 void SMESH_MeshEditor::ReplaceElemInGroups (const SMDS_MeshElement* elemToRm,
2887 const SMDS_MeshElement* elemToAdd,
2888 SMESHDS_Mesh * aMesh)
2890 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2891 if (!groups.empty()) {
2892 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2893 for ( ; grIt != groups.end(); grIt++ ) {
2894 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2895 if ( group && group->SMDSGroup().Remove( elemToRm ) && elemToAdd )
2896 group->SMDSGroup().Add( elemToAdd );
2901 //================================================================================
2903 * \brief Replace elemToRm by elemToAdd in the all groups
2905 //================================================================================
2907 void SMESH_MeshEditor::ReplaceElemInGroups (const SMDS_MeshElement* elemToRm,
2908 const vector<const SMDS_MeshElement*>& elemToAdd,
2909 SMESHDS_Mesh * aMesh)
2911 const set<SMESHDS_GroupBase*>& groups = aMesh->GetGroups();
2912 if (!groups.empty())
2914 set<SMESHDS_GroupBase*>::const_iterator grIt = groups.begin();
2915 for ( ; grIt != groups.end(); grIt++ ) {
2916 SMESHDS_Group* group = dynamic_cast<SMESHDS_Group*>( *grIt );
2917 if ( group && group->SMDSGroup().Remove( elemToRm ) )
2918 for ( size_t i = 0; i < elemToAdd.size(); ++i )
2919 group->SMDSGroup().Add( elemToAdd[ i ] );
2924 //=======================================================================
2925 //function : QuadToTri
2926 //purpose : Cut quadrangles into triangles.
2927 // theCrit is used to select a diagonal to cut
2928 //=======================================================================
2930 bool SMESH_MeshEditor::QuadToTri (TIDSortedElemSet & theElems,
2931 const bool the13Diag)
2933 myLastCreatedElems.Clear();
2934 myLastCreatedNodes.Clear();
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++ )
2944 const SMDS_MeshElement* elem = *itElem;
2945 if ( !elem || elem->GetGeomType() != SMDSGeom_QUADRANGLE )
2948 if ( elem->NbNodes() == 4 ) {
2949 // retrieve element nodes
2950 const SMDS_MeshNode* aNodes [4];
2951 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
2953 while ( itN->more() )
2954 aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
2956 int aShapeId = FindShape( elem );
2957 const SMDS_MeshElement* newElem1 = 0;
2958 const SMDS_MeshElement* newElem2 = 0;
2960 newElem1 = aMesh->AddFace( aNodes[2], aNodes[0], aNodes[1] );
2961 newElem2 = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
2964 newElem1 = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
2965 newElem2 = aMesh->AddFace( aNodes[3], aNodes[1], aNodes[2] );
2967 myLastCreatedElems.Append(newElem1);
2968 myLastCreatedElems.Append(newElem2);
2969 // put a new triangle on the same shape and add to the same groups
2972 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
2973 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
2975 AddToSameGroups( newElem1, elem, aMesh );
2976 AddToSameGroups( newElem2, elem, aMesh );
2977 aMesh->RemoveElement( elem );
2980 // Quadratic quadrangle
2982 else if ( elem->NbNodes() >= 8 )
2984 // get surface elem is on
2985 int aShapeId = FindShape( elem );
2986 if ( aShapeId != helper.GetSubShapeID() ) {
2990 shape = aMesh->IndexToShape( aShapeId );
2991 if ( !shape.IsNull() && shape.ShapeType() == TopAbs_FACE ) {
2992 TopoDS_Face face = TopoDS::Face( shape );
2993 surface = BRep_Tool::Surface( face );
2994 if ( !surface.IsNull() )
2995 helper.SetSubShape( shape );
2999 const SMDS_MeshNode* aNodes [9]; aNodes[8] = 0;
3000 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
3001 for ( int i = 0; itN->more(); ++i )
3002 aNodes[ i ] = static_cast<const SMDS_MeshNode*>( itN->next() );
3004 const SMDS_MeshNode* centrNode = aNodes[8];
3005 if ( centrNode == 0 )
3007 centrNode = helper.GetCentralNode( aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3008 aNodes[4], aNodes[5], aNodes[6], aNodes[7],
3010 myLastCreatedNodes.Append(centrNode);
3013 // create a new element
3014 const SMDS_MeshElement* newElem1 = 0;
3015 const SMDS_MeshElement* newElem2 = 0;
3017 newElem1 = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
3018 aNodes[6], aNodes[7], centrNode );
3019 newElem2 = aMesh->AddFace(aNodes[2], aNodes[0], aNodes[1],
3020 centrNode, aNodes[4], aNodes[5] );
3023 newElem1 = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
3024 aNodes[7], aNodes[4], centrNode );
3025 newElem2 = aMesh->AddFace(aNodes[3], aNodes[1], aNodes[2],
3026 centrNode, aNodes[5], aNodes[6] );
3028 myLastCreatedElems.Append(newElem1);
3029 myLastCreatedElems.Append(newElem2);
3030 // put a new triangle on the same shape and add to the same groups
3033 aMesh->SetMeshElementOnShape( newElem1, aShapeId );
3034 aMesh->SetMeshElementOnShape( newElem2, aShapeId );
3036 AddToSameGroups( newElem1, elem, aMesh );
3037 AddToSameGroups( newElem2, elem, aMesh );
3038 aMesh->RemoveElement( elem );
3045 //=======================================================================
3046 //function : getAngle
3048 //=======================================================================
3050 double getAngle(const SMDS_MeshElement * tr1,
3051 const SMDS_MeshElement * tr2,
3052 const SMDS_MeshNode * n1,
3053 const SMDS_MeshNode * n2)
3055 double angle = 2. * M_PI; // bad angle
3058 SMESH::Controls::TSequenceOfXYZ P1, P2;
3059 if ( !SMESH::Controls::NumericalFunctor::GetPoints( tr1, P1 ) ||
3060 !SMESH::Controls::NumericalFunctor::GetPoints( tr2, P2 ))
3063 if(!tr1->IsQuadratic())
3064 N1 = gp_Vec( P1(2) - P1(1) ) ^ gp_Vec( P1(3) - P1(1) );
3066 N1 = gp_Vec( P1(3) - P1(1) ) ^ gp_Vec( P1(5) - P1(1) );
3067 if ( N1.SquareMagnitude() <= gp::Resolution() )
3069 if(!tr2->IsQuadratic())
3070 N2 = gp_Vec( P2(2) - P2(1) ) ^ gp_Vec( P2(3) - P2(1) );
3072 N2 = gp_Vec( P2(3) - P2(1) ) ^ gp_Vec( P2(5) - P2(1) );
3073 if ( N2.SquareMagnitude() <= gp::Resolution() )
3076 // find the first diagonal node n1 in the triangles:
3077 // take in account a diagonal link orientation
3078 const SMDS_MeshElement *nFirst[2], *tr[] = { tr1, tr2 };
3079 for ( int t = 0; t < 2; t++ ) {
3080 SMDS_ElemIteratorPtr it = tr[ t ]->nodesIterator();
3081 int i = 0, iDiag = -1;
3082 while ( it->more()) {
3083 const SMDS_MeshElement *n = it->next();
3084 if ( n == n1 || n == n2 ) {
3088 if ( i - iDiag == 1 )
3089 nFirst[ t ] = ( n == n1 ? n2 : n1 );
3098 if ( nFirst[ 0 ] == nFirst[ 1 ] )
3101 angle = N1.Angle( N2 );
3106 // =================================================
3107 // class generating a unique ID for a pair of nodes
3108 // and able to return nodes by that ID
3109 // =================================================
3113 LinkID_Gen( const SMESHDS_Mesh* theMesh )
3114 :myMesh( theMesh ), myMaxID( theMesh->MaxNodeID() + 1)
3117 long GetLinkID (const SMDS_MeshNode * n1,
3118 const SMDS_MeshNode * n2) const
3120 return ( Min(n1->GetID(),n2->GetID()) * myMaxID + Max(n1->GetID(),n2->GetID()));
3123 bool GetNodes (const long theLinkID,
3124 const SMDS_MeshNode* & theNode1,
3125 const SMDS_MeshNode* & theNode2) const
3127 theNode1 = myMesh->FindNode( theLinkID / myMaxID );
3128 if ( !theNode1 ) return false;
3129 theNode2 = myMesh->FindNode( theLinkID % myMaxID );
3130 if ( !theNode2 ) return false;
3136 const SMESHDS_Mesh* myMesh;
3141 //=======================================================================
3142 //function : TriToQuad
3143 //purpose : Fuse neighbour triangles into quadrangles.
3144 // theCrit is used to select a neighbour to fuse with.
3145 // theMaxAngle is a max angle between element normals at which
3146 // fusion is still performed.
3147 //=======================================================================
3149 bool SMESH_MeshEditor::TriToQuad (TIDSortedElemSet & theElems,
3150 SMESH::Controls::NumericalFunctorPtr theCrit,
3151 const double theMaxAngle)
3153 myLastCreatedElems.Clear();
3154 myLastCreatedNodes.Clear();
3156 if ( !theCrit.get() )
3159 SMESHDS_Mesh * aMesh = GetMeshDS();
3161 // Prepare data for algo: build
3162 // 1. map of elements with their linkIDs
3163 // 2. map of linkIDs with their elements
3165 map< SMESH_TLink, list< const SMDS_MeshElement* > > mapLi_listEl;
3166 map< SMESH_TLink, list< const SMDS_MeshElement* > >::iterator itLE;
3167 map< const SMDS_MeshElement*, set< SMESH_TLink > > mapEl_setLi;
3168 map< const SMDS_MeshElement*, set< SMESH_TLink > >::iterator itEL;
3170 TIDSortedElemSet::iterator itElem;
3171 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
3173 const SMDS_MeshElement* elem = *itElem;
3174 if(!elem || elem->GetType() != SMDSAbs_Face ) continue;
3175 bool IsTria = ( elem->NbCornerNodes()==3 );
3176 if (!IsTria) continue;
3178 // retrieve element nodes
3179 const SMDS_MeshNode* aNodes [4];
3180 SMDS_NodeIteratorPtr itN = elem->nodeIterator();
3183 aNodes[ i++ ] = itN->next();
3184 aNodes[ 3 ] = aNodes[ 0 ];
3187 for ( i = 0; i < 3; i++ ) {
3188 SMESH_TLink link( aNodes[i], aNodes[i+1] );
3189 // check if elements sharing a link can be fused
3190 itLE = mapLi_listEl.find( link );
3191 if ( itLE != mapLi_listEl.end() ) {
3192 if ((*itLE).second.size() > 1 ) // consider only 2 elems adjacent by a link
3194 const SMDS_MeshElement* elem2 = (*itLE).second.front();
3195 //if ( FindShape( elem ) != FindShape( elem2 ))
3196 // continue; // do not fuse triangles laying on different shapes
3197 if ( getAngle( elem, elem2, aNodes[i], aNodes[i+1] ) > theMaxAngle )
3198 continue; // avoid making badly shaped quads
3199 (*itLE).second.push_back( elem );
3202 mapLi_listEl[ link ].push_back( elem );
3204 mapEl_setLi [ elem ].insert( link );
3207 // Clean the maps from the links shared by a sole element, ie
3208 // links to which only one element is bound in mapLi_listEl
3210 for ( itLE = mapLi_listEl.begin(); itLE != mapLi_listEl.end(); itLE++ ) {
3211 int nbElems = (*itLE).second.size();
3212 if ( nbElems < 2 ) {
3213 const SMDS_MeshElement* elem = (*itLE).second.front();
3214 SMESH_TLink link = (*itLE).first;
3215 mapEl_setLi[ elem ].erase( link );
3216 if ( mapEl_setLi[ elem ].empty() )
3217 mapEl_setLi.erase( elem );
3221 // Algo: fuse triangles into quadrangles
3223 while ( ! mapEl_setLi.empty() ) {
3224 // Look for the start element:
3225 // the element having the least nb of shared links
3226 const SMDS_MeshElement* startElem = 0;
3228 for ( itEL = mapEl_setLi.begin(); itEL != mapEl_setLi.end(); itEL++ ) {
3229 int nbLinks = (*itEL).second.size();
3230 if ( nbLinks < minNbLinks ) {
3231 startElem = (*itEL).first;
3232 minNbLinks = nbLinks;
3233 if ( minNbLinks == 1 )
3238 // search elements to fuse starting from startElem or links of elements
3239 // fused earlyer - startLinks
3240 list< SMESH_TLink > startLinks;
3241 while ( startElem || !startLinks.empty() ) {
3242 while ( !startElem && !startLinks.empty() ) {
3243 // Get an element to start, by a link
3244 SMESH_TLink linkId = startLinks.front();
3245 startLinks.pop_front();
3246 itLE = mapLi_listEl.find( linkId );
3247 if ( itLE != mapLi_listEl.end() ) {
3248 list< const SMDS_MeshElement* > & listElem = (*itLE).second;
3249 list< const SMDS_MeshElement* >::iterator itE = listElem.begin();
3250 for ( ; itE != listElem.end() ; itE++ )
3251 if ( mapEl_setLi.find( (*itE) ) != mapEl_setLi.end() )
3253 mapLi_listEl.erase( itLE );
3258 // Get candidates to be fused
3259 const SMDS_MeshElement *tr1 = startElem, *tr2 = 0, *tr3 = 0;
3260 const SMESH_TLink *link12 = 0, *link13 = 0;
3262 ASSERT( mapEl_setLi.find( tr1 ) != mapEl_setLi.end() );
3263 set< SMESH_TLink >& setLi = mapEl_setLi[ tr1 ];
3264 ASSERT( !setLi.empty() );
3265 set< SMESH_TLink >::iterator itLi;
3266 for ( itLi = setLi.begin(); itLi != setLi.end(); itLi++ )
3268 const SMESH_TLink & link = (*itLi);
3269 itLE = mapLi_listEl.find( link );
3270 if ( itLE == mapLi_listEl.end() )
3273 const SMDS_MeshElement* elem = (*itLE).second.front();
3275 elem = (*itLE).second.back();
3276 mapLi_listEl.erase( itLE );
3277 if ( mapEl_setLi.find( elem ) == mapEl_setLi.end())
3288 // add other links of elem to list of links to re-start from
3289 set< SMESH_TLink >& links = mapEl_setLi[ elem ];
3290 set< SMESH_TLink >::iterator it;
3291 for ( it = links.begin(); it != links.end(); it++ ) {
3292 const SMESH_TLink& link2 = (*it);
3293 if ( link2 != link )
3294 startLinks.push_back( link2 );
3298 // Get nodes of possible quadrangles
3299 const SMDS_MeshNode *n12 [4], *n13 [4];
3300 bool Ok12 = false, Ok13 = false;
3301 const SMDS_MeshNode *linkNode1, *linkNode2;
3303 linkNode1 = link12->first;
3304 linkNode2 = link12->second;
3305 if ( tr2 && getQuadrangleNodes( n12, linkNode1, linkNode2, tr1, tr2 ))
3309 linkNode1 = link13->first;
3310 linkNode2 = link13->second;
3311 if ( tr3 && getQuadrangleNodes( n13, linkNode1, linkNode2, tr1, tr3 ))
3315 // Choose a pair to fuse
3316 if ( Ok12 && Ok13 ) {
3317 SMDS_FaceOfNodes quad12 ( n12[ 0 ], n12[ 1 ], n12[ 2 ], n12[ 3 ] );
3318 SMDS_FaceOfNodes quad13 ( n13[ 0 ], n13[ 1 ], n13[ 2 ], n13[ 3 ] );
3319 double aBadRate12 = getBadRate( &quad12, theCrit );
3320 double aBadRate13 = getBadRate( &quad13, theCrit );
3321 if ( aBadRate13 < aBadRate12 )
3328 // and remove fused elems and remove links from the maps
3329 mapEl_setLi.erase( tr1 );
3332 mapEl_setLi.erase( tr2 );
3333 mapLi_listEl.erase( *link12 );
3334 if ( tr1->NbNodes() == 3 )
3336 const SMDS_MeshElement* newElem = 0;
3337 newElem = aMesh->AddFace(n12[0], n12[1], n12[2], n12[3] );
3338 myLastCreatedElems.Append(newElem);
3339 AddToSameGroups( newElem, tr1, aMesh );
3340 int aShapeId = tr1->getshapeId();
3342 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3343 aMesh->RemoveElement( tr1 );
3344 aMesh->RemoveElement( tr2 );
3347 vector< const SMDS_MeshNode* > N1;
3348 vector< const SMDS_MeshNode* > N2;
3349 getNodesFromTwoTria(tr1,tr2,N1,N2);
3350 // now we receive following N1 and N2 (using numeration as in image in InverseDiag())
3351 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
3352 // i.e. first nodes from both arrays form a new diagonal
3353 const SMDS_MeshNode* aNodes[8];
3362 const SMDS_MeshElement* newElem = 0;
3363 if ( N1.size() == 7 || N2.size() == 7 ) // biquadratic
3364 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3365 aNodes[4], aNodes[5], aNodes[6], aNodes[7], N1[4]);
3367 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3368 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
3369 myLastCreatedElems.Append(newElem);
3370 AddToSameGroups( newElem, tr1, aMesh );
3371 int aShapeId = tr1->getshapeId();
3373 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3374 aMesh->RemoveElement( tr1 );
3375 aMesh->RemoveElement( tr2 );
3376 // remove middle node (9)
3377 if ( N1[4]->NbInverseElements() == 0 )
3378 aMesh->RemoveNode( N1[4] );
3379 if ( N1.size() == 7 && N1[6]->NbInverseElements() == 0 )
3380 aMesh->RemoveNode( N1[6] );
3381 if ( N2.size() == 7 && N2[6]->NbInverseElements() == 0 )
3382 aMesh->RemoveNode( N2[6] );
3387 mapEl_setLi.erase( tr3 );
3388 mapLi_listEl.erase( *link13 );
3389 if ( tr1->NbNodes() == 3 ) {
3390 const SMDS_MeshElement* newElem = 0;
3391 newElem = aMesh->AddFace(n13[0], n13[1], n13[2], n13[3] );
3392 myLastCreatedElems.Append(newElem);
3393 AddToSameGroups( newElem, tr1, aMesh );
3394 int aShapeId = tr1->getshapeId();
3396 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3397 aMesh->RemoveElement( tr1 );
3398 aMesh->RemoveElement( tr3 );
3401 vector< const SMDS_MeshNode* > N1;
3402 vector< const SMDS_MeshNode* > N2;
3403 getNodesFromTwoTria(tr1,tr3,N1,N2);
3404 // now we receive following N1 and N2 (using numeration as above image)
3405 // tria1 : (1 2 4 5 9 7) and tria2 : (3 4 2 8 9 6)
3406 // i.e. first nodes from both arrays form a new diagonal
3407 const SMDS_MeshNode* aNodes[8];
3416 const SMDS_MeshElement* newElem = 0;
3417 if ( N1.size() == 7 || N2.size() == 7 ) // biquadratic
3418 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3419 aNodes[4], aNodes[5], aNodes[6], aNodes[7], N1[4]);
3421 newElem = aMesh->AddFace(aNodes[0], aNodes[1], aNodes[2], aNodes[3],
3422 aNodes[4], aNodes[5], aNodes[6], aNodes[7]);
3423 myLastCreatedElems.Append(newElem);
3424 AddToSameGroups( newElem, tr1, aMesh );
3425 int aShapeId = tr1->getshapeId();
3427 aMesh->SetMeshElementOnShape( newElem, aShapeId );
3428 aMesh->RemoveElement( tr1 );
3429 aMesh->RemoveElement( tr3 );
3430 // remove middle node (9)
3431 if ( N1[4]->NbInverseElements() == 0 )
3432 aMesh->RemoveNode( N1[4] );
3433 if ( N1.size() == 7 && N1[6]->NbInverseElements() == 0 )
3434 aMesh->RemoveNode( N1[6] );
3435 if ( N2.size() == 7 && N2[6]->NbInverseElements() == 0 )
3436 aMesh->RemoveNode( N2[6] );
3440 // Next element to fuse: the rejected one
3442 startElem = Ok12 ? tr3 : tr2;
3444 } // if ( startElem )
3445 } // while ( startElem || !startLinks.empty() )
3446 } // while ( ! mapEl_setLi.empty() )
3452 /*#define DUMPSO(txt) \
3453 // cout << txt << endl;
3454 //=============================================================================
3458 //=============================================================================
3459 static void swap( int i1, int i2, int idNodes[], gp_Pnt P[] )
3463 int tmp = idNodes[ i1 ];
3464 idNodes[ i1 ] = idNodes[ i2 ];
3465 idNodes[ i2 ] = tmp;
3466 gp_Pnt Ptmp = P[ i1 ];
3469 DUMPSO( i1 << "(" << idNodes[ i2 ] << ") <-> " << i2 << "(" << idNodes[ i1 ] << ")");
3472 //=======================================================================
3473 //function : SortQuadNodes
3474 //purpose : Set 4 nodes of a quadrangle face in a good order.
3475 // Swap 1<->2 or 2<->3 nodes and correspondingly return
3477 //=======================================================================
3479 int SMESH_MeshEditor::SortQuadNodes (const SMDS_Mesh * theMesh,
3484 for ( i = 0; i < 4; i++ ) {
3485 const SMDS_MeshNode *n = theMesh->FindNode( idNodes[i] );
3487 P[ i ].SetCoord( n->X(), n->Y(), n->Z() );
3490 gp_Vec V1(P[0], P[1]);
3491 gp_Vec V2(P[0], P[2]);
3492 gp_Vec V3(P[0], P[3]);
3494 gp_Vec Cross1 = V1 ^ V2;
3495 gp_Vec Cross2 = V2 ^ V3;
3498 if (Cross1.Dot(Cross2) < 0)
3503 if (Cross1.Dot(Cross2) < 0)
3507 swap ( i, i + 1, idNodes, P );
3509 // for ( int ii = 0; ii < 4; ii++ ) {
3510 // const SMDS_MeshNode *n = theMesh->FindNode( idNodes[ii] );
3511 // DUMPSO( ii << "(" << idNodes[ii] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3517 //=======================================================================
3518 //function : SortHexaNodes
3519 //purpose : Set 8 nodes of a hexahedron in a good order.
3520 // Return success status
3521 //=======================================================================
3523 bool SMESH_MeshEditor::SortHexaNodes (const SMDS_Mesh * theMesh,
3528 DUMPSO( "INPUT: ========================================");
3529 for ( i = 0; i < 8; i++ ) {
3530 const SMDS_MeshNode *n = theMesh->FindNode( idNodes[i] );
3531 if ( !n ) return false;
3532 P[ i ].SetCoord( n->X(), n->Y(), n->Z() );
3533 DUMPSO( i << "(" << idNodes[i] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3535 DUMPSO( "========================================");
3538 set<int> faceNodes; // ids of bottom face nodes, to be found
3539 set<int> checkedId1; // ids of tried 2-nd nodes
3540 Standard_Real leastDist = DBL_MAX; // dist of the 4-th node from 123 plane
3541 const Standard_Real tol = 1.e-6; // tolerance to find nodes in plane
3542 int iMin, iLoop1 = 0;
3544 // Loop to try the 2-nd nodes
3546 while ( leastDist > DBL_MIN && ++iLoop1 < 8 )
3548 // Find not checked 2-nd node
3549 for ( i = 1; i < 8; i++ )
3550 if ( checkedId1.find( idNodes[i] ) == checkedId1.end() ) {
3551 int id1 = idNodes[i];
3552 swap ( 1, i, idNodes, P );
3553 checkedId1.insert ( id1 );
3557 // Find the 3-d node so that 1-2-3 triangle to be on a hexa face,
3558 // ie that all but meybe one (id3 which is on the same face) nodes
3559 // lay on the same side from the triangle plane.
3561 bool manyInPlane = false; // more than 4 nodes lay in plane
3563 while ( ++iLoop2 < 6 ) {
3565 // get 1-2-3 plane coeffs
3566 Standard_Real A, B, C, D;
3567 gp_Vec N = gp_Vec (P[0], P[1]).Crossed( gp_Vec (P[0], P[2]) );
3568 if ( N.SquareMagnitude() > gp::Resolution() )
3570 gp_Pln pln ( P[0], N );
3571 pln.Coefficients( A, B, C, D );
3573 // find the node (iMin) closest to pln
3574 Standard_Real dist[ 8 ], minDist = DBL_MAX;
3576 for ( i = 3; i < 8; i++ ) {
3577 dist[i] = A * P[i].X() + B * P[i].Y() + C * P[i].Z() + D;
3578 if ( fabs( dist[i] ) < minDist ) {
3579 minDist = fabs( dist[i] );
3582 if ( fabs( dist[i] ) <= tol )
3583 idInPln.insert( idNodes[i] );
3586 // there should not be more than 4 nodes in bottom plane
3587 if ( idInPln.size() > 1 )
3589 DUMPSO( "### idInPln.size() = " << idInPln.size());
3590 // idInPlane does not contain the first 3 nodes
3591 if ( manyInPlane || idInPln.size() == 5)
3592 return false; // all nodes in one plane
3595 // set the 1-st node to be not in plane
3596 for ( i = 3; i < 8; i++ ) {
3597 if ( idInPln.find( idNodes[ i ] ) == idInPln.end() ) {
3598 DUMPSO( "### Reset 0-th node");
3599 swap( 0, i, idNodes, P );
3604 // reset to re-check second nodes
3605 leastDist = DBL_MAX;
3609 break; // from iLoop2;
3612 // check that the other 4 nodes are on the same side
3613 bool sameSide = true;
3614 bool isNeg = dist[ iMin == 3 ? 4 : 3 ] <= 0.;
3615 for ( i = 3; sameSide && i < 8; i++ ) {
3617 sameSide = ( isNeg == dist[i] <= 0.);
3620 // keep best solution
3621 if ( sameSide && minDist < leastDist ) {
3622 leastDist = minDist;
3624 faceNodes.insert( idNodes[ 1 ] );
3625 faceNodes.insert( idNodes[ 2 ] );
3626 faceNodes.insert( idNodes[ iMin ] );
3627 DUMPSO( "loop " << iLoop2 << " id2 " << idNodes[ 1 ] << " id3 " << idNodes[ 2 ]
3628 << " leastDist = " << leastDist);
3629 if ( leastDist <= DBL_MIN )
3634 // set next 3-d node to check
3635 int iNext = 2 + iLoop2;
3637 DUMPSO( "Try 2-nd");
3638 swap ( 2, iNext, idNodes, P );
3640 } // while ( iLoop2 < 6 )
3643 if ( faceNodes.empty() ) return false;
3645 // Put the faceNodes in proper places
3646 for ( i = 4; i < 8; i++ ) {
3647 if ( faceNodes.find( idNodes[ i ] ) != faceNodes.end() ) {
3648 // find a place to put
3650 while ( faceNodes.find( idNodes[ iTo ] ) != faceNodes.end() )
3652 DUMPSO( "Set faceNodes");
3653 swap ( iTo, i, idNodes, P );
3658 // Set nodes of the found bottom face in good order
3659 DUMPSO( " Found bottom face: ");
3660 i = SortQuadNodes( theMesh, idNodes );
3662 gp_Pnt Ptmp = P[ i ];
3667 // for ( int ii = 0; ii < 4; ii++ ) {
3668 // const SMDS_MeshNode *n = theMesh->FindNode( idNodes[ii] );
3669 // DUMPSO( ii << "(" << idNodes[ii] <<") : "<<n->X()<<" "<<n->Y()<<" "<<n->Z());
3672 // Gravity center of the top and bottom faces
3673 gp_Pnt aGCb = ( P[0].XYZ() + P[1].XYZ() + P[2].XYZ() + P[3].XYZ() ) / 4.;
3674 gp_Pnt aGCt = ( P[4].XYZ() + P[5].XYZ() + P[6].XYZ() + P[7].XYZ() ) / 4.;
3676 // Get direction from the bottom to the top face
3677 gp_Vec upDir ( aGCb, aGCt );
3678 Standard_Real upDirSize = upDir.Magnitude();
3679 if ( upDirSize <= gp::Resolution() ) return false;
3682 // Assure that the bottom face normal points up
3683 gp_Vec Nb = gp_Vec (P[0], P[1]).Crossed( gp_Vec (P[0], P[2]) );
3684 Nb += gp_Vec (P[0], P[2]).Crossed( gp_Vec (P[0], P[3]) );
3685 if ( Nb.Dot( upDir ) < 0 ) {
3686 DUMPSO( "Reverse bottom face");
3687 swap( 1, 3, idNodes, P );
3690 // Find 5-th node - the one closest to the 1-st among the last 4 nodes.
3691 Standard_Real minDist = DBL_MAX;
3692 for ( i = 4; i < 8; i++ ) {
3693 // projection of P[i] to the plane defined by P[0] and upDir
3694 gp_Pnt Pp = P[i].Translated( upDir * ( upDir.Dot( gp_Vec( P[i], P[0] ))));
3695 Standard_Real sqDist = P[0].SquareDistance( Pp );
3696 if ( sqDist < minDist ) {
3701 DUMPSO( "Set 4-th");
3702 swap ( 4, iMin, idNodes, P );
3704 // Set nodes of the top face in good order
3705 DUMPSO( "Sort top face");
3706 i = SortQuadNodes( theMesh, &idNodes[4] );
3709 gp_Pnt Ptmp = P[ i ];
3714 // Assure that direction of the top face normal is from the bottom face
3715 gp_Vec Nt = gp_Vec (P[4], P[5]).Crossed( gp_Vec (P[4], P[6]) );
3716 Nt += gp_Vec (P[4], P[6]).Crossed( gp_Vec (P[4], P[7]) );
3717 if ( Nt.Dot( upDir ) < 0 ) {
3718 DUMPSO( "Reverse top face");
3719 swap( 5, 7, idNodes, P );
3722 // DUMPSO( "OUTPUT: ========================================");
3723 // for ( i = 0; i < 8; i++ ) {
3724 // float *p = ugrid->GetPoint(idNodes[i]);
3725 // DUMPSO( i << "(" << idNodes[i] << ") : " << p[0] << " " << p[1] << " " << p[2]);
3731 //================================================================================
3733 * \brief Return nodes linked to the given one
3734 * \param theNode - the node
3735 * \param linkedNodes - the found nodes
3736 * \param type - the type of elements to check
3738 * Medium nodes are ignored
3740 //================================================================================
3742 void SMESH_MeshEditor::GetLinkedNodes( const SMDS_MeshNode* theNode,
3743 TIDSortedElemSet & linkedNodes,
3744 SMDSAbs_ElementType type )
3746 SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator(type);
3747 while ( elemIt->more() )
3749 const SMDS_MeshElement* elem = elemIt->next();
3750 if(elem->GetType() == SMDSAbs_0DElement)
3753 SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
3754 if ( elem->GetType() == SMDSAbs_Volume )
3756 SMDS_VolumeTool vol( elem );
3757 while ( nodeIt->more() ) {
3758 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
3759 if ( theNode != n && vol.IsLinked( theNode, n ))
3760 linkedNodes.insert( n );
3765 for ( int i = 0; nodeIt->more(); ++i ) {
3766 const SMDS_MeshNode* n = cast2Node( nodeIt->next() );
3767 if ( n == theNode ) {
3768 int iBefore = i - 1;
3770 if ( elem->IsQuadratic() ) {
3771 int nb = elem->NbNodes() / 2;
3772 iAfter = SMESH_MesherHelper::WrapIndex( iAfter, nb );
3773 iBefore = SMESH_MesherHelper::WrapIndex( iBefore, nb );
3775 linkedNodes.insert( elem->GetNodeWrap( iAfter ));
3776 linkedNodes.insert( elem->GetNodeWrap( iBefore ));
3783 //=======================================================================
3784 //function : laplacianSmooth
3785 //purpose : pulls theNode toward the center of surrounding nodes directly
3786 // connected to that node along an element edge
3787 //=======================================================================
3789 void laplacianSmooth(const SMDS_MeshNode* theNode,
3790 const Handle(Geom_Surface)& theSurface,
3791 map< const SMDS_MeshNode*, gp_XY* >& theUVMap)
3793 // find surrounding nodes
3795 TIDSortedElemSet nodeSet;
3796 SMESH_MeshEditor::GetLinkedNodes( theNode, nodeSet, SMDSAbs_Face );
3798 // compute new coodrs
3800 double coord[] = { 0., 0., 0. };
3801 TIDSortedElemSet::iterator nodeSetIt = nodeSet.begin();
3802 for ( ; nodeSetIt != nodeSet.end(); nodeSetIt++ ) {
3803 const SMDS_MeshNode* node = cast2Node(*nodeSetIt);
3804 if ( theSurface.IsNull() ) { // smooth in 3D
3805 coord[0] += node->X();
3806 coord[1] += node->Y();
3807 coord[2] += node->Z();
3809 else { // smooth in 2D
3810 ASSERT( theUVMap.find( node ) != theUVMap.end() );
3811 gp_XY* uv = theUVMap[ node ];
3812 coord[0] += uv->X();
3813 coord[1] += uv->Y();
3816 int nbNodes = nodeSet.size();
3819 coord[0] /= nbNodes;
3820 coord[1] /= nbNodes;
3822 if ( !theSurface.IsNull() ) {
3823 ASSERT( theUVMap.find( theNode ) != theUVMap.end() );
3824 theUVMap[ theNode ]->SetCoord( coord[0], coord[1] );
3825 gp_Pnt p3d = theSurface->Value( coord[0], coord[1] );
3831 coord[2] /= nbNodes;
3835 const_cast< SMDS_MeshNode* >( theNode )->setXYZ(coord[0],coord[1],coord[2]);
3838 //=======================================================================
3839 //function : centroidalSmooth
3840 //purpose : pulls theNode toward the element-area-weighted centroid of the
3841 // surrounding elements
3842 //=======================================================================
3844 void centroidalSmooth(const SMDS_MeshNode* theNode,
3845 const Handle(Geom_Surface)& theSurface,
3846 map< const SMDS_MeshNode*, gp_XY* >& theUVMap)
3848 gp_XYZ aNewXYZ(0.,0.,0.);
3849 SMESH::Controls::Area anAreaFunc;
3850 double totalArea = 0.;
3855 SMDS_ElemIteratorPtr elemIt = theNode->GetInverseElementIterator(SMDSAbs_Face);
3856 while ( elemIt->more() )
3858 const SMDS_MeshElement* elem = elemIt->next();
3861 gp_XYZ elemCenter(0.,0.,0.);
3862 SMESH::Controls::TSequenceOfXYZ aNodePoints;
3863 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
3864 int nn = elem->NbNodes();
3865 if(elem->IsQuadratic()) nn = nn/2;
3867 //while ( itN->more() ) {
3869 const SMDS_MeshNode* aNode = static_cast<const SMDS_MeshNode*>( itN->next() );
3871 gp_XYZ aP( aNode->X(), aNode->Y(), aNode->Z() );
3872 aNodePoints.push_back( aP );
3873 if ( !theSurface.IsNull() ) { // smooth in 2D
3874 ASSERT( theUVMap.find( aNode ) != theUVMap.end() );
3875 gp_XY* uv = theUVMap[ aNode ];
3876 aP.SetCoord( uv->X(), uv->Y(), 0. );
3880 double elemArea = anAreaFunc.GetValue( aNodePoints );
3881 totalArea += elemArea;
3883 aNewXYZ += elemCenter * elemArea;
3885 aNewXYZ /= totalArea;
3886 if ( !theSurface.IsNull() ) {
3887 theUVMap[ theNode ]->SetCoord( aNewXYZ.X(), aNewXYZ.Y() );
3888 aNewXYZ = theSurface->Value( aNewXYZ.X(), aNewXYZ.Y() ).XYZ();
3893 const_cast< SMDS_MeshNode* >( theNode )->setXYZ(aNewXYZ.X(),aNewXYZ.Y(),aNewXYZ.Z());
3896 //=======================================================================
3897 //function : getClosestUV
3898 //purpose : return UV of closest projection
3899 //=======================================================================
3901 static bool getClosestUV (Extrema_GenExtPS& projector,
3902 const gp_Pnt& point,
3905 projector.Perform( point );
3906 if ( projector.IsDone() ) {
3907 double u, v, minVal = DBL_MAX;
3908 for ( int i = projector.NbExt(); i > 0; i-- )
3909 if ( projector.SquareDistance( i ) < minVal ) {
3910 minVal = projector.SquareDistance( i );
3911 projector.Point( i ).Parameter( u, v );
3913 result.SetCoord( u, v );
3919 //=======================================================================
3921 //purpose : Smooth theElements during theNbIterations or until a worst
3922 // element has aspect ratio <= theTgtAspectRatio.
3923 // Aspect Ratio varies in range [1.0, inf].
3924 // If theElements is empty, the whole mesh is smoothed.
3925 // theFixedNodes contains additionally fixed nodes. Nodes built
3926 // on edges and boundary nodes are always fixed.
3927 //=======================================================================
3929 void SMESH_MeshEditor::Smooth (TIDSortedElemSet & theElems,
3930 set<const SMDS_MeshNode*> & theFixedNodes,
3931 const SmoothMethod theSmoothMethod,
3932 const int theNbIterations,
3933 double theTgtAspectRatio,
3936 myLastCreatedElems.Clear();
3937 myLastCreatedNodes.Clear();
3939 if ( theTgtAspectRatio < 1.0 )
3940 theTgtAspectRatio = 1.0;
3942 const double disttol = 1.e-16;
3944 SMESH::Controls::AspectRatio aQualityFunc;
3946 SMESHDS_Mesh* aMesh = GetMeshDS();
3948 if ( theElems.empty() ) {
3949 // add all faces to theElems
3950 SMDS_FaceIteratorPtr fIt = aMesh->facesIterator();
3951 while ( fIt->more() ) {
3952 const SMDS_MeshElement* face = fIt->next();
3953 theElems.insert( theElems.end(), face );
3956 // get all face ids theElems are on
3957 set< int > faceIdSet;
3958 TIDSortedElemSet::iterator itElem;
3960 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
3961 int fId = FindShape( *itElem );
3962 // check that corresponding submesh exists and a shape is face
3964 faceIdSet.find( fId ) == faceIdSet.end() &&
3965 aMesh->MeshElements( fId )) {
3966 TopoDS_Shape F = aMesh->IndexToShape( fId );
3967 if ( !F.IsNull() && F.ShapeType() == TopAbs_FACE )
3968 faceIdSet.insert( fId );
3971 faceIdSet.insert( 0 ); // to smooth elements that are not on any TopoDS_Face
3973 // ===============================================
3974 // smooth elements on each TopoDS_Face separately
3975 // ===============================================
3977 SMESH_MesherHelper helper( *GetMesh() );
3979 set< int >::reverse_iterator fId = faceIdSet.rbegin(); // treat 0 fId at the end
3980 for ( ; fId != faceIdSet.rend(); ++fId )
3982 // get face surface and submesh
3983 Handle(Geom_Surface) surface;
3984 SMESHDS_SubMesh* faceSubMesh = 0;
3987 double u1 = 0, u2 = 0, v1 = 0, v2 = 0;
3988 bool isUPeriodic = false, isVPeriodic = false;
3991 face = TopoDS::Face( aMesh->IndexToShape( *fId ));
3992 surface = BRep_Tool::Surface( face );
3993 faceSubMesh = aMesh->MeshElements( *fId );
3994 fToler2 = BRep_Tool::Tolerance( face );
3995 fToler2 *= fToler2 * 10.;
3996 isUPeriodic = surface->IsUPeriodic();
3997 // if ( isUPeriodic )
3998 // surface->UPeriod();
3999 isVPeriodic = surface->IsVPeriodic();
4000 // if ( isVPeriodic )
4001 // surface->VPeriod();
4002 surface->Bounds( u1, u2, v1, v2 );
4003 helper.SetSubShape( face );
4005 // ---------------------------------------------------------
4006 // for elements on a face, find movable and fixed nodes and
4007 // compute UV for them
4008 // ---------------------------------------------------------
4009 bool checkBoundaryNodes = false;
4010 bool isQuadratic = false;
4011 set<const SMDS_MeshNode*> setMovableNodes;
4012 map< const SMDS_MeshNode*, gp_XY* > uvMap, uvMap2;
4013 list< gp_XY > listUV; // uvs the 2 uvMaps refer to
4014 list< const SMDS_MeshElement* > elemsOnFace;
4016 Extrema_GenExtPS projector;
4017 GeomAdaptor_Surface surfAdaptor;
4018 if ( !surface.IsNull() ) {
4019 surfAdaptor.Load( surface );
4020 projector.Initialize( surfAdaptor, 20,20, 1e-5,1e-5 );
4022 int nbElemOnFace = 0;
4023 itElem = theElems.begin();
4024 // loop on not yet smoothed elements: look for elems on a face
4025 while ( itElem != theElems.end() )
4027 if ( faceSubMesh && nbElemOnFace == faceSubMesh->NbElements() )
4028 break; // all elements found
4030 const SMDS_MeshElement* elem = *itElem;
4031 if ( !elem || elem->GetType() != SMDSAbs_Face || elem->NbNodes() < 3 ||
4032 ( faceSubMesh && !faceSubMesh->Contains( elem ))) {
4036 elemsOnFace.push_back( elem );
4037 theElems.erase( itElem++ );
4041 isQuadratic = elem->IsQuadratic();
4043 // get movable nodes of elem
4044 const SMDS_MeshNode* node;
4045 SMDS_TypeOfPosition posType;
4046 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
4047 int nn = 0, nbn = elem->NbNodes();
4048 if(elem->IsQuadratic())
4050 while ( nn++ < nbn ) {
4051 node = static_cast<const SMDS_MeshNode*>( itN->next() );
4052 const SMDS_PositionPtr& pos = node->GetPosition();
4053 posType = pos ? pos->GetTypeOfPosition() : SMDS_TOP_3DSPACE;
4054 if (posType != SMDS_TOP_EDGE &&
4055 posType != SMDS_TOP_VERTEX &&
4056 theFixedNodes.find( node ) == theFixedNodes.end())
4058 // check if all faces around the node are on faceSubMesh
4059 // because a node on edge may be bound to face
4061 if ( faceSubMesh ) {
4062 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Face);
4063 while ( eIt->more() && all ) {
4064 const SMDS_MeshElement* e = eIt->next();
4065 all = faceSubMesh->Contains( e );
4069 setMovableNodes.insert( node );
4071 checkBoundaryNodes = true;
4073 if ( posType == SMDS_TOP_3DSPACE )
4074 checkBoundaryNodes = true;
4077 if ( surface.IsNull() )
4080 // get nodes to check UV
4081 list< const SMDS_MeshNode* > uvCheckNodes;
4082 const SMDS_MeshNode* nodeInFace = 0;
4083 itN = elem->nodesIterator();
4084 nn = 0; nbn = elem->NbNodes();
4085 if(elem->IsQuadratic())
4087 while ( nn++ < nbn ) {
4088 node = static_cast<const SMDS_MeshNode*>( itN->next() );
4089 if ( node->GetPosition()->GetDim() == 2 )
4091 if ( uvMap.find( node ) == uvMap.end() )
4092 uvCheckNodes.push_back( node );
4093 // add nodes of elems sharing node
4094 // SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Face);
4095 // while ( eIt->more() ) {
4096 // const SMDS_MeshElement* e = eIt->next();
4097 // if ( e != elem ) {
4098 // SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4099 // while ( nIt->more() ) {
4100 // const SMDS_MeshNode* n =
4101 // static_cast<const SMDS_MeshNode*>( nIt->next() );
4102 // if ( uvMap.find( n ) == uvMap.end() )
4103 // uvCheckNodes.push_back( n );
4109 list< const SMDS_MeshNode* >::iterator n = uvCheckNodes.begin();
4110 for ( ; n != uvCheckNodes.end(); ++n ) {
4113 const SMDS_PositionPtr& pos = node->GetPosition();
4114 posType = pos ? pos->GetTypeOfPosition() : SMDS_TOP_3DSPACE;
4118 bool toCheck = true;
4119 uv = helper.GetNodeUV( face, node, nodeInFace, &toCheck );
4121 // compute not existing UV
4122 bool project = ( posType == SMDS_TOP_3DSPACE );
4123 // double dist1 = DBL_MAX, dist2 = 0;
4124 // if ( posType != SMDS_TOP_3DSPACE ) {
4125 // dist1 = pNode.SquareDistance( surface->Value( uv.X(), uv.Y() ));
4126 // project = dist1 > fToler2;
4128 if ( project ) { // compute new UV
4130 gp_Pnt pNode = SMESH_TNodeXYZ( node );
4131 if ( !getClosestUV( projector, pNode, newUV )) {
4132 MESSAGE("Node Projection Failed " << node);
4136 newUV.SetX( ElCLib::InPeriod( newUV.X(), u1, u2 ));
4138 newUV.SetY( ElCLib::InPeriod( newUV.Y(), v1, v2 ));
4140 // if ( posType != SMDS_TOP_3DSPACE )
4141 // dist2 = pNode.SquareDistance( surface->Value( newUV.X(), newUV.Y() ));
4142 // if ( dist2 < dist1 )
4146 // store UV in the map
4147 listUV.push_back( uv );
4148 uvMap.insert( make_pair( node, &listUV.back() ));
4150 } // loop on not yet smoothed elements
4152 if ( !faceSubMesh || nbElemOnFace != faceSubMesh->NbElements() )
4153 checkBoundaryNodes = true;
4155 // fix nodes on mesh boundary
4157 if ( checkBoundaryNodes ) {
4158 map< SMESH_TLink, int > linkNbMap; // how many times a link encounters in elemsOnFace
4159 map< SMESH_TLink, int >::iterator link_nb;
4160 // put all elements links to linkNbMap
4161 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4162 for ( ; elemIt != elemsOnFace.end(); ++elemIt ) {
4163 const SMDS_MeshElement* elem = (*elemIt);
4164 int nbn = elem->NbCornerNodes();
4165 // loop on elem links: insert them in linkNbMap
4166 for ( int iN = 0; iN < nbn; ++iN ) {
4167 const SMDS_MeshNode* n1 = elem->GetNode( iN );
4168 const SMDS_MeshNode* n2 = elem->GetNode(( iN+1 ) % nbn);
4169 SMESH_TLink link( n1, n2 );
4170 link_nb = linkNbMap.insert( make_pair( link, 0 )).first;
4174 // remove nodes that are in links encountered only once from setMovableNodes
4175 for ( link_nb = linkNbMap.begin(); link_nb != linkNbMap.end(); ++link_nb ) {
4176 if ( link_nb->second == 1 ) {
4177 setMovableNodes.erase( link_nb->first.node1() );
4178 setMovableNodes.erase( link_nb->first.node2() );
4183 // -----------------------------------------------------
4184 // for nodes on seam edge, compute one more UV ( uvMap2 );
4185 // find movable nodes linked to nodes on seam and which
4186 // are to be smoothed using the second UV ( uvMap2 )
4187 // -----------------------------------------------------
4189 set<const SMDS_MeshNode*> nodesNearSeam; // to smooth using uvMap2
4190 if ( !surface.IsNull() ) {
4191 TopExp_Explorer eExp( face, TopAbs_EDGE );
4192 for ( ; eExp.More(); eExp.Next() ) {
4193 TopoDS_Edge edge = TopoDS::Edge( eExp.Current() );
4194 if ( !BRep_Tool::IsClosed( edge, face ))
4196 SMESHDS_SubMesh* sm = aMesh->MeshElements( edge );
4197 if ( !sm ) continue;
4198 // find out which parameter varies for a node on seam
4201 Handle(Geom2d_Curve) pcurve = BRep_Tool::CurveOnSurface( edge, face, f, l );
4202 if ( pcurve.IsNull() ) continue;
4203 uv1 = pcurve->Value( f );
4205 pcurve = BRep_Tool::CurveOnSurface( edge, face, f, l );
4206 if ( pcurve.IsNull() ) continue;
4207 uv2 = pcurve->Value( f );
4208 int iPar = Abs( uv1.X() - uv2.X() ) > Abs( uv1.Y() - uv2.Y() ) ? 1 : 2;
4210 if ( uv1.Coord( iPar ) > uv2.Coord( iPar ))
4211 std::swap( uv1, uv2 );
4212 // get nodes on seam and its vertices
4213 list< const SMDS_MeshNode* > seamNodes;
4214 SMDS_NodeIteratorPtr nSeamIt = sm->GetNodes();
4215 while ( nSeamIt->more() ) {
4216 const SMDS_MeshNode* node = nSeamIt->next();
4217 if ( !isQuadratic || !IsMedium( node ))
4218 seamNodes.push_back( node );
4220 TopExp_Explorer vExp( edge, TopAbs_VERTEX );
4221 for ( ; vExp.More(); vExp.Next() ) {
4222 sm = aMesh->MeshElements( vExp.Current() );
4224 nSeamIt = sm->GetNodes();
4225 while ( nSeamIt->more() )
4226 seamNodes.push_back( nSeamIt->next() );
4229 // loop on nodes on seam
4230 list< const SMDS_MeshNode* >::iterator noSeIt = seamNodes.begin();
4231 for ( ; noSeIt != seamNodes.end(); ++noSeIt ) {
4232 const SMDS_MeshNode* nSeam = *noSeIt;
4233 map< const SMDS_MeshNode*, gp_XY* >::iterator n_uv = uvMap.find( nSeam );
4234 if ( n_uv == uvMap.end() )
4237 n_uv->second->SetCoord( iPar, uv1.Coord( iPar ));
4238 // set the second UV
4239 listUV.push_back( *n_uv->second );
4240 listUV.back().SetCoord( iPar, uv2.Coord( iPar ));
4241 if ( uvMap2.empty() )
4242 uvMap2 = uvMap; // copy the uvMap contents
4243 uvMap2[ nSeam ] = &listUV.back();
4245 // collect movable nodes linked to ones on seam in nodesNearSeam
4246 SMDS_ElemIteratorPtr eIt = nSeam->GetInverseElementIterator(SMDSAbs_Face);
4247 while ( eIt->more() ) {
4248 const SMDS_MeshElement* e = eIt->next();
4249 int nbUseMap1 = 0, nbUseMap2 = 0;
4250 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4251 int nn = 0, nbn = e->NbNodes();
4252 if(e->IsQuadratic()) nbn = nbn/2;
4253 while ( nn++ < nbn )
4255 const SMDS_MeshNode* n =
4256 static_cast<const SMDS_MeshNode*>( nIt->next() );
4258 setMovableNodes.find( n ) == setMovableNodes.end() )
4260 // add only nodes being closer to uv2 than to uv1
4261 // gp_Pnt pMid (0.5 * ( n->X() + nSeam->X() ),
4262 // 0.5 * ( n->Y() + nSeam->Y() ),
4263 // 0.5 * ( n->Z() + nSeam->Z() ));
4265 // getClosestUV( projector, pMid, uv );
4266 double x = uvMap[ n ]->Coord( iPar );
4267 if ( Abs( uv1.Coord( iPar ) - x ) >
4268 Abs( uv2.Coord( iPar ) - x )) {
4269 nodesNearSeam.insert( n );
4275 // for centroidalSmooth all element nodes must
4276 // be on one side of a seam
4277 if ( theSmoothMethod == CENTROIDAL && nbUseMap1 && nbUseMap2 ) {
4278 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
4280 while ( nn++ < nbn ) {
4281 const SMDS_MeshNode* n =
4282 static_cast<const SMDS_MeshNode*>( nIt->next() );
4283 setMovableNodes.erase( n );
4287 } // loop on nodes on seam
4288 } // loop on edge of a face
4289 } // if ( !face.IsNull() )
4291 if ( setMovableNodes.empty() ) {
4292 MESSAGE( "Face id : " << *fId << " - NO SMOOTHING: no nodes to move!!!");
4293 continue; // goto next face
4301 double maxRatio = -1., maxDisplacement = -1.;
4302 set<const SMDS_MeshNode*>::iterator nodeToMove;
4303 for ( it = 0; it < theNbIterations; it++ ) {
4304 maxDisplacement = 0.;
4305 nodeToMove = setMovableNodes.begin();
4306 for ( ; nodeToMove != setMovableNodes.end(); nodeToMove++ ) {
4307 const SMDS_MeshNode* node = (*nodeToMove);
4308 gp_XYZ aPrevPos ( node->X(), node->Y(), node->Z() );
4311 bool map2 = ( nodesNearSeam.find( node ) != nodesNearSeam.end() );
4312 if ( theSmoothMethod == LAPLACIAN )
4313 laplacianSmooth( node, surface, map2 ? uvMap2 : uvMap );
4315 centroidalSmooth( node, surface, map2 ? uvMap2 : uvMap );
4317 // node displacement
4318 gp_XYZ aNewPos ( node->X(), node->Y(), node->Z() );
4319 Standard_Real aDispl = (aPrevPos - aNewPos).SquareModulus();
4320 if ( aDispl > maxDisplacement )
4321 maxDisplacement = aDispl;
4323 // no node movement => exit
4324 //if ( maxDisplacement < 1.e-16 ) {
4325 if ( maxDisplacement < disttol ) {
4326 MESSAGE("-- no node movement --");
4330 // check elements quality
4332 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4333 for ( ; elemIt != elemsOnFace.end(); ++elemIt ) {
4334 const SMDS_MeshElement* elem = (*elemIt);
4335 if ( !elem || elem->GetType() != SMDSAbs_Face )
4337 SMESH::Controls::TSequenceOfXYZ aPoints;
4338 if ( aQualityFunc.GetPoints( elem, aPoints )) {
4339 double aValue = aQualityFunc.GetValue( aPoints );
4340 if ( aValue > maxRatio )
4344 if ( maxRatio <= theTgtAspectRatio ) {
4345 //MESSAGE("-- quality achieved --");
4348 if (it+1 == theNbIterations) {
4349 //MESSAGE("-- Iteration limit exceeded --");
4351 } // smoothing iterations
4353 // MESSAGE(" Face id: " << *fId <<
4354 // " Nb iterstions: " << it <<
4355 // " Displacement: " << maxDisplacement <<
4356 // " Aspect Ratio " << maxRatio);
4358 // ---------------------------------------
4359 // new nodes positions are computed,
4360 // record movement in DS and set new UV
4361 // ---------------------------------------
4362 nodeToMove = setMovableNodes.begin();
4363 for ( ; nodeToMove != setMovableNodes.end(); nodeToMove++ ) {
4364 SMDS_MeshNode* node = const_cast< SMDS_MeshNode* > (*nodeToMove);
4365 aMesh->MoveNode( node, node->X(), node->Y(), node->Z() );
4366 map< const SMDS_MeshNode*, gp_XY* >::iterator node_uv = uvMap.find( node );
4367 if ( node_uv != uvMap.end() ) {
4368 gp_XY* uv = node_uv->second;
4370 ( SMDS_PositionPtr( new SMDS_FacePosition( uv->X(), uv->Y() )));
4374 // move medium nodes of quadratic elements
4377 vector<const SMDS_MeshNode*> nodes;
4379 list< const SMDS_MeshElement* >::iterator elemIt = elemsOnFace.begin();
4380 for ( ; elemIt != elemsOnFace.end(); ++elemIt )
4382 const SMDS_MeshElement* QF = *elemIt;
4383 if ( QF->IsQuadratic() )
4385 nodes.assign( SMDS_MeshElement::iterator( QF->interlacedNodesElemIterator() ),
4386 SMDS_MeshElement::iterator() );
4387 nodes.push_back( nodes[0] );
4389 for (size_t i = 1; i < nodes.size(); i += 2 ) // i points to a medium node
4391 if ( !surface.IsNull() )
4393 gp_XY uv1 = helper.GetNodeUV( face, nodes[i-1], nodes[i+1], &checkUV );
4394 gp_XY uv2 = helper.GetNodeUV( face, nodes[i+1], nodes[i-1], &checkUV );
4395 gp_XY uv = helper.GetMiddleUV( surface, uv1, uv2 );
4396 xyz = surface->Value( uv.X(), uv.Y() );
4399 xyz = 0.5 * ( SMESH_TNodeXYZ( nodes[i-1] ) + SMESH_TNodeXYZ( nodes[i+1] ));
4401 if (( SMESH_TNodeXYZ( nodes[i] ) - xyz.XYZ() ).Modulus() > disttol )
4402 // we have to move a medium node
4403 aMesh->MoveNode( nodes[i], xyz.X(), xyz.Y(), xyz.Z() );
4409 } // loop on face ids
4415 //=======================================================================
4416 //function : isReverse
4417 //purpose : Return true if normal of prevNodes is not co-directied with
4418 // gp_Vec(prevNodes[iNotSame],nextNodes[iNotSame]).
4419 // iNotSame is where prevNodes and nextNodes are different.
4420 // If result is true then future volume orientation is OK
4421 //=======================================================================
4423 bool isReverse(const SMDS_MeshElement* face,
4424 const vector<const SMDS_MeshNode*>& prevNodes,
4425 const vector<const SMDS_MeshNode*>& nextNodes,
4429 SMESH_TNodeXYZ pP = prevNodes[ iNotSame ];
4430 SMESH_TNodeXYZ pN = nextNodes[ iNotSame ];
4431 gp_XYZ extrDir( pN - pP ), faceNorm;
4432 SMESH_MeshAlgos::FaceNormal( face, faceNorm, /*normalized=*/false );
4434 return faceNorm * extrDir < 0.0;
4437 //================================================================================
4439 * \brief Assure that theElemSets[0] holds elements, not nodes
4441 //================================================================================
4443 void setElemsFirst( TIDSortedElemSet theElemSets[2] )
4445 if ( !theElemSets[0].empty() &&
4446 (*theElemSets[0].begin())->GetType() == SMDSAbs_Node )
4448 std::swap( theElemSets[0], theElemSets[1] );
4450 else if ( !theElemSets[1].empty() &&
4451 (*theElemSets[1].begin())->GetType() != SMDSAbs_Node )
4453 std::swap( theElemSets[0], theElemSets[1] );
4458 //=======================================================================
4460 * \brief Create elements by sweeping an element
4461 * \param elem - element to sweep
4462 * \param newNodesItVec - nodes generated from each node of the element
4463 * \param newElems - generated elements
4464 * \param nbSteps - number of sweeping steps
4465 * \param srcElements - to append elem for each generated element
4467 //=======================================================================
4469 void SMESH_MeshEditor::sweepElement(const SMDS_MeshElement* elem,
4470 const vector<TNodeOfNodeListMapItr> & newNodesItVec,
4471 list<const SMDS_MeshElement*>& newElems,
4472 const size_t nbSteps,
4473 SMESH_SequenceOfElemPtr& srcElements)
4475 SMESHDS_Mesh* aMesh = GetMeshDS();
4477 const int nbNodes = elem->NbNodes();
4478 const int nbCorners = elem->NbCornerNodes();
4479 SMDSAbs_EntityType baseType = elem->GetEntityType(); /* it can change in case of
4480 polyhedron creation !!! */
4481 // Loop on elem nodes:
4482 // find new nodes and detect same nodes indices
4483 vector < list< const SMDS_MeshNode* >::const_iterator > itNN( nbNodes );
4484 vector<const SMDS_MeshNode*> prevNod( nbNodes );
4485 vector<const SMDS_MeshNode*> nextNod( nbNodes );
4486 vector<const SMDS_MeshNode*> midlNod( nbNodes );
4488 int iNode, nbSame = 0, nbDouble = 0, iNotSameNode = 0;
4489 vector<int> sames(nbNodes);
4490 vector<bool> isSingleNode(nbNodes);
4492 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
4493 TNodeOfNodeListMapItr nnIt = newNodesItVec[ iNode ];
4494 const SMDS_MeshNode* node = nnIt->first;
4495 const list< const SMDS_MeshNode* > & listNewNodes = nnIt->second;
4496 if ( listNewNodes.empty() )
4499 itNN [ iNode ] = listNewNodes.begin();
4500 prevNod[ iNode ] = node;
4501 nextNod[ iNode ] = listNewNodes.front();
4503 isSingleNode[iNode] = (listNewNodes.size()==nbSteps); /* medium node of quadratic or
4504 corner node of linear */
4505 if ( prevNod[ iNode ] != nextNod [ iNode ])
4506 nbDouble += !isSingleNode[iNode];
4508 if( iNode < nbCorners ) { // check corners only
4509 if ( prevNod[ iNode ] == nextNod [ iNode ])
4510 sames[nbSame++] = iNode;
4512 iNotSameNode = iNode;
4516 if ( nbSame == nbNodes || nbSame > 2) {
4517 MESSAGE( " Too many same nodes of element " << elem->GetID() );
4521 if ( elem->GetType() == SMDSAbs_Face && !isReverse( elem, prevNod, nextNod, iNotSameNode ))
4523 // fix nodes order to have bottom normal external
4524 if ( baseType == SMDSEntity_Polygon )
4526 std::reverse( itNN.begin(), itNN.end() );
4527 std::reverse( prevNod.begin(), prevNod.end() );
4528 std::reverse( midlNod.begin(), midlNod.end() );
4529 std::reverse( nextNod.begin(), nextNod.end() );
4530 std::reverse( isSingleNode.begin(), isSingleNode.end() );
4534 const vector<int>& ind = SMDS_MeshCell::reverseSmdsOrder( baseType, nbNodes );
4535 SMDS_MeshCell::applyInterlace( ind, itNN );
4536 SMDS_MeshCell::applyInterlace( ind, prevNod );
4537 SMDS_MeshCell::applyInterlace( ind, nextNod );
4538 SMDS_MeshCell::applyInterlace( ind, midlNod );
4539 SMDS_MeshCell::applyInterlace( ind, isSingleNode );
4542 sames[nbSame] = iNotSameNode;
4543 for ( int j = 0; j <= nbSame; ++j )
4544 for ( size_t i = 0; i < ind.size(); ++i )
4545 if ( ind[i] == sames[j] )
4550 iNotSameNode = sames[nbSame];
4554 else if ( elem->GetType() == SMDSAbs_Edge )
4556 // orient a new face same as adjacent one
4558 const SMDS_MeshElement* e;
4559 TIDSortedElemSet dummy;
4560 if (( e = SMESH_MeshAlgos::FindFaceInSet( nextNod[0], prevNod[0], dummy,dummy, &i1, &i2 )) ||
4561 ( e = SMESH_MeshAlgos::FindFaceInSet( prevNod[1], nextNod[1], dummy,dummy, &i1, &i2 )) ||
4562 ( e = SMESH_MeshAlgos::FindFaceInSet( prevNod[0], prevNod[1], dummy,dummy, &i1, &i2 )))
4564 // there is an adjacent face, check order of nodes in it
4565 bool sameOrder = ( Abs( i2 - i1 ) == 1 ) ? ( i2 > i1 ) : ( i2 < i1 );
4568 std::swap( itNN[0], itNN[1] );
4569 std::swap( prevNod[0], prevNod[1] );
4570 std::swap( nextNod[0], nextNod[1] );
4571 #if defined(__APPLE__)
4572 std::swap( isSingleNode[0], isSingleNode[1] );
4574 isSingleNode.swap( isSingleNode[0], isSingleNode[1] );
4577 sames[0] = 1 - sames[0];
4578 iNotSameNode = 1 - iNotSameNode;
4583 int iSameNode = 0, iBeforeSame = 0, iAfterSame = 0, iOpposSame = 0;
4585 iSameNode = sames[ nbSame-1 ];
4586 iBeforeSame = ( iSameNode + nbCorners - 1 ) % nbCorners;
4587 iAfterSame = ( iSameNode + 1 ) % nbCorners;
4588 iOpposSame = ( iSameNode - 2 < 0 ? iSameNode + 2 : iSameNode - 2 );
4591 if ( baseType == SMDSEntity_Polygon )
4593 if ( nbNodes == 3 ) baseType = SMDSEntity_Triangle;
4594 else if ( nbNodes == 4 ) baseType = SMDSEntity_Quadrangle;
4596 else if ( baseType == SMDSEntity_Quad_Polygon )
4598 if ( nbNodes == 6 ) baseType = SMDSEntity_Quad_Triangle;
4599 else if ( nbNodes == 8 ) baseType = SMDSEntity_Quad_Quadrangle;
4602 // make new elements
4603 for ( size_t iStep = 0; iStep < nbSteps; iStep++ )
4606 for ( iNode = 0; iNode < nbNodes; iNode++ )
4608 midlNod[ iNode ] = isSingleNode[iNode] ? 0 : *itNN[ iNode ]++;
4609 nextNod[ iNode ] = *itNN[ iNode ]++;
4612 SMDS_MeshElement* aNewElem = 0;
4613 /*if(!elem->IsPoly())*/ {
4614 switch ( baseType ) {
4616 case SMDSEntity_Node: { // sweep NODE
4617 if ( nbSame == 0 ) {
4618 if ( isSingleNode[0] )
4619 aNewElem = aMesh->AddEdge( prevNod[ 0 ], nextNod[ 0 ] );
4621 aNewElem = aMesh->AddEdge( prevNod[ 0 ], nextNod[ 0 ], midlNod[ 0 ] );
4627 case SMDSEntity_Edge: { // sweep EDGE
4628 if ( nbDouble == 0 )
4630 if ( nbSame == 0 ) // ---> quadrangle
4631 aNewElem = aMesh->AddFace(prevNod[ 0 ], prevNod[ 1 ],
4632 nextNod[ 1 ], nextNod[ 0 ] );
4633 else // ---> triangle
4634 aNewElem = aMesh->AddFace(prevNod[ 0 ], prevNod[ 1 ],
4635 nextNod[ iNotSameNode ] );
4637 else // ---> polygon
4639 vector<const SMDS_MeshNode*> poly_nodes;
4640 poly_nodes.push_back( prevNod[0] );
4641 poly_nodes.push_back( prevNod[1] );
4642 if ( prevNod[1] != nextNod[1] )
4644 if ( midlNod[1]) poly_nodes.push_back( midlNod[1]);
4645 poly_nodes.push_back( nextNod[1] );
4647 if ( prevNod[0] != nextNod[0] )
4649 poly_nodes.push_back( nextNod[0] );
4650 if ( midlNod[0]) poly_nodes.push_back( midlNod[0]);
4652 switch ( poly_nodes.size() ) {
4654 aNewElem = aMesh->AddFace( poly_nodes[ 0 ], poly_nodes[ 1 ], poly_nodes[ 2 ]);
4657 aNewElem = aMesh->AddFace( poly_nodes[ 0 ], poly_nodes[ 1 ],
4658 poly_nodes[ 2 ], poly_nodes[ 3 ]);
4661 aNewElem = aMesh->AddPolygonalFace (poly_nodes);
4666 case SMDSEntity_Triangle: // TRIANGLE --->
4668 if ( nbDouble > 0 ) break;
4669 if ( nbSame == 0 ) // ---> pentahedron
4670 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ],
4671 nextNod[ 0 ], nextNod[ 1 ], nextNod[ 2 ] );
4673 else if ( nbSame == 1 ) // ---> pyramid
4674 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iAfterSame ],
4675 nextNod[ iAfterSame ], nextNod[ iBeforeSame ],
4676 nextNod[ iSameNode ]);
4678 else // 2 same nodes: ---> tetrahedron
4679 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ],
4680 nextNod[ iNotSameNode ]);
4683 case SMDSEntity_Quad_Edge: // sweep quadratic EDGE --->
4687 if ( nbDouble+nbSame == 2 )
4689 if(nbSame==0) { // ---> quadratic quadrangle
4690 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1], nextNod[0],
4691 prevNod[2], midlNod[1], nextNod[2], midlNod[0]);
4693 else { //(nbSame==1) // ---> quadratic triangle
4695 return; // medium node on axis
4697 else if(sames[0]==0)
4698 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1],
4699 prevNod[2], midlNod[1], nextNod[2] );
4701 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[0],
4702 prevNod[2], nextNod[2], midlNod[0]);
4705 else if ( nbDouble == 3 )
4707 if ( nbSame == 0 ) { // ---> bi-quadratic quadrangle
4708 aNewElem = aMesh->AddFace(prevNod[0], prevNod[1], nextNod[1], nextNod[0],
4709 prevNod[2], midlNod[1], nextNod[2], midlNod[0], midlNod[2]);
4716 case SMDSEntity_Quadrangle: { // sweep QUADRANGLE --->
4717 if ( nbDouble > 0 ) break;
4719 if ( nbSame == 0 ) // ---> hexahedron
4720 aNewElem = aMesh->AddVolume (prevNod[ 0 ], prevNod[ 1 ], prevNod[ 2 ], prevNod[ 3 ],
4721 nextNod[ 0 ], nextNod[ 1 ], nextNod[ 2 ], nextNod[ 3 ]);
4723 else if ( nbSame == 1 ) { // ---> pyramid + pentahedron
4724 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iAfterSame ],
4725 nextNod[ iAfterSame ], nextNod[ iBeforeSame ],
4726 nextNod[ iSameNode ]);
4727 newElems.push_back( aNewElem );
4728 aNewElem = aMesh->AddVolume (prevNod[ iAfterSame ], prevNod[ iOpposSame ],
4729 prevNod[ iBeforeSame ], nextNod[ iAfterSame ],
4730 nextNod[ iOpposSame ], nextNod[ iBeforeSame ] );
4732 else if ( nbSame == 2 ) { // ---> pentahedron
4733 if ( prevNod[ iBeforeSame ] == nextNod[ iBeforeSame ] )
4734 // iBeforeSame is same too
4735 aNewElem = aMesh->AddVolume (prevNod[ iBeforeSame ], prevNod[ iOpposSame ],
4736 nextNod[ iOpposSame ], prevNod[ iSameNode ],
4737 prevNod[ iAfterSame ], nextNod[ iAfterSame ]);
4739 // iAfterSame is same too
4740 aNewElem = aMesh->AddVolume (prevNod[ iSameNode ], prevNod[ iBeforeSame ],
4741 nextNod[ iBeforeSame ], prevNod[ iAfterSame ],
4742 prevNod[ iOpposSame ], nextNod[ iOpposSame ]);
4746 case SMDSEntity_Quad_Triangle: // sweep (Bi)Quadratic TRIANGLE --->
4747 case SMDSEntity_BiQuad_Triangle: /* ??? */ {
4748 if ( nbDouble+nbSame != 3 ) break;
4750 // ---> pentahedron with 15 nodes
4751 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2],
4752 nextNod[0], nextNod[1], nextNod[2],
4753 prevNod[3], prevNod[4], prevNod[5],
4754 nextNod[3], nextNod[4], nextNod[5],
4755 midlNod[0], midlNod[1], midlNod[2]);
4757 else if(nbSame==1) {
4758 // ---> 2d order pyramid of 13 nodes
4759 int apex = iSameNode;
4760 int i0 = ( apex + 1 ) % nbCorners;
4761 int i1 = ( apex - 1 + nbCorners ) % nbCorners;
4765 aNewElem = aMesh->AddVolume(prevNod[i1], prevNod[i0],
4766 nextNod[i0], nextNod[i1], prevNod[apex],
4767 prevNod[i01], midlNod[i0],
4768 nextNod[i01], midlNod[i1],
4769 prevNod[i1a], prevNod[i0a],
4770 nextNod[i0a], nextNod[i1a]);
4772 else if(nbSame==2) {
4773 // ---> 2d order tetrahedron of 10 nodes
4774 int n1 = iNotSameNode;
4775 int n2 = ( n1 + 1 ) % nbCorners;
4776 int n3 = ( n1 + nbCorners - 1 ) % nbCorners;
4780 aNewElem = aMesh->AddVolume (prevNod[n1], prevNod[n2], prevNod[n3], nextNod[n1],
4781 prevNod[n12], prevNod[n23], prevNod[n31],
4782 midlNod[n1], nextNod[n12], nextNod[n31]);
4786 case SMDSEntity_Quad_Quadrangle: { // sweep Quadratic QUADRANGLE --->
4788 if ( nbDouble != 4 ) break;
4789 // ---> hexahedron with 20 nodes
4790 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2], prevNod[3],
4791 nextNod[0], nextNod[1], nextNod[2], nextNod[3],
4792 prevNod[4], prevNod[5], prevNod[6], prevNod[7],
4793 nextNod[4], nextNod[5], nextNod[6], nextNod[7],
4794 midlNod[0], midlNod[1], midlNod[2], midlNod[3]);
4796 else if(nbSame==1) {
4797 // ---> pyramid + pentahedron - can not be created since it is needed
4798 // additional middle node at the center of face
4799 //INFOS( " Sweep for face " << elem->GetID() << " can not be created" );
4802 else if( nbSame == 2 ) {
4803 if ( nbDouble != 2 ) break;
4804 // ---> 2d order Pentahedron with 15 nodes
4806 if ( prevNod[ iBeforeSame ] == nextNod[ iBeforeSame ] ) {
4807 // iBeforeSame is same too
4814 // iAfterSame is same too
4824 aNewElem = aMesh->AddVolume (prevNod[n1], prevNod[n2], nextNod[n2],
4825 prevNod[n4], prevNod[n5], nextNod[n5],
4826 prevNod[n12], midlNod[n2], nextNod[n12],
4827 prevNod[n45], midlNod[n5], nextNod[n45],
4828 prevNod[n14], prevNod[n25], nextNod[n25]);
4832 case SMDSEntity_BiQuad_Quadrangle: { // sweep BiQuadratic QUADRANGLE --->
4834 if( nbSame == 0 && nbDouble == 9 ) {
4835 // ---> tri-quadratic hexahedron with 27 nodes
4836 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2], prevNod[3],
4837 nextNod[0], nextNod[1], nextNod[2], nextNod[3],
4838 prevNod[4], prevNod[5], prevNod[6], prevNod[7],
4839 nextNod[4], nextNod[5], nextNod[6], nextNod[7],
4840 midlNod[0], midlNod[1], midlNod[2], midlNod[3],
4841 prevNod[8], // bottom center
4842 midlNod[4], midlNod[5], midlNod[6], midlNod[7],
4843 nextNod[8], // top center
4844 midlNod[8]);// elem center
4852 case SMDSEntity_Polygon: { // sweep POLYGON
4854 if ( nbNodes == 6 && nbSame == 0 && nbDouble == 0 ) {
4855 // ---> hexagonal prism
4856 aNewElem = aMesh->AddVolume (prevNod[0], prevNod[1], prevNod[2],
4857 prevNod[3], prevNod[4], prevNod[5],
4858 nextNod[0], nextNod[1], nextNod[2],
4859 nextNod[3], nextNod[4], nextNod[5]);
4863 case SMDSEntity_Ball:
4868 } // switch ( baseType )
4871 if ( !aNewElem && elem->GetType() == SMDSAbs_Face ) // try to create a polyherdal prism
4873 if ( baseType != SMDSEntity_Polygon )
4875 const std::vector<int>& ind = SMDS_MeshCell::interlacedSmdsOrder(baseType,nbNodes);
4876 SMDS_MeshCell::applyInterlace( ind, prevNod );
4877 SMDS_MeshCell::applyInterlace( ind, nextNod );
4878 SMDS_MeshCell::applyInterlace( ind, midlNod );
4879 SMDS_MeshCell::applyInterlace( ind, itNN );
4880 SMDS_MeshCell::applyInterlace( ind, isSingleNode );
4881 baseType = SMDSEntity_Polygon; // WARNING: change baseType !!!!
4883 vector<const SMDS_MeshNode*> polyedre_nodes (nbNodes*2 + 4*nbNodes);
4884 vector<int> quantities (nbNodes + 2);
4885 polyedre_nodes.clear();
4889 for (int inode = 0; inode < nbNodes; inode++)
4890 polyedre_nodes.push_back( prevNod[inode] );
4891 quantities.push_back( nbNodes );
4894 polyedre_nodes.push_back( nextNod[0] );
4895 for (int inode = nbNodes; inode-1; --inode )
4896 polyedre_nodes.push_back( nextNod[inode-1] );
4897 quantities.push_back( nbNodes );
4905 const int iQuad = elem->IsQuadratic();
4906 for (int iface = 0; iface < nbNodes; iface += 1+iQuad )
4908 const int prevNbNodes = polyedre_nodes.size(); // to detect degenerated face
4909 int inextface = (iface+1+iQuad) % nbNodes;
4910 int imid = (iface+1) % nbNodes;
4911 polyedre_nodes.push_back( prevNod[inextface] ); // 0
4912 if ( iQuad ) polyedre_nodes.push_back( prevNod[imid] ); // 4
4913 polyedre_nodes.push_back( prevNod[iface] ); // 1
4914 if ( prevNod[iface] != nextNod[iface] ) // 1 != 2
4916 if ( midlNod[ iface ]) polyedre_nodes.push_back( midlNod[ iface ]); // 5
4917 polyedre_nodes.push_back( nextNod[iface] ); // 2
4919 if ( iQuad ) polyedre_nodes.push_back( nextNod[imid] ); // 6
4920 if ( prevNod[inextface] != nextNod[inextface] ) // 0 != 3
4922 polyedre_nodes.push_back( nextNod[inextface] ); // 3
4923 if ( midlNod[ inextface ]) polyedre_nodes.push_back( midlNod[ inextface ]);// 7
4925 const int nbFaceNodes = polyedre_nodes.size() - prevNbNodes;
4926 if ( nbFaceNodes > 2 )
4927 quantities.push_back( nbFaceNodes );
4928 else // degenerated face
4929 polyedre_nodes.resize( prevNbNodes );
4931 aNewElem = aMesh->AddPolyhedralVolume (polyedre_nodes, quantities);
4933 } // try to create a polyherdal prism
4936 newElems.push_back( aNewElem );
4937 myLastCreatedElems.Append(aNewElem);
4938 srcElements.Append( elem );
4941 // set new prev nodes
4942 for ( iNode = 0; iNode < nbNodes; iNode++ )
4943 prevNod[ iNode ] = nextNod[ iNode ];
4948 //=======================================================================
4950 * \brief Create 1D and 2D elements around swept elements
4951 * \param mapNewNodes - source nodes and ones generated from them
4952 * \param newElemsMap - source elements and ones generated from them
4953 * \param elemNewNodesMap - nodes generated from each node of each element
4954 * \param elemSet - all swept elements
4955 * \param nbSteps - number of sweeping steps
4956 * \param srcElements - to append elem for each generated element
4958 //=======================================================================
4960 void SMESH_MeshEditor::makeWalls (TNodeOfNodeListMap & mapNewNodes,
4961 TTElemOfElemListMap & newElemsMap,
4962 TElemOfVecOfNnlmiMap & elemNewNodesMap,
4963 TIDSortedElemSet& elemSet,
4965 SMESH_SequenceOfElemPtr& srcElements)
4967 ASSERT( newElemsMap.size() == elemNewNodesMap.size() );
4968 SMESHDS_Mesh* aMesh = GetMeshDS();
4970 // Find nodes belonging to only one initial element - sweep them into edges.
4972 TNodeOfNodeListMapItr nList = mapNewNodes.begin();
4973 for ( ; nList != mapNewNodes.end(); nList++ )
4975 const SMDS_MeshNode* node =
4976 static_cast<const SMDS_MeshNode*>( nList->first );
4977 if ( newElemsMap.count( node ))
4978 continue; // node was extruded into edge
4979 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator();
4980 int nbInitElems = 0;
4981 const SMDS_MeshElement* el = 0;
4982 SMDSAbs_ElementType highType = SMDSAbs_Edge; // count most complex elements only
4983 while ( eIt->more() && nbInitElems < 2 ) {
4984 const SMDS_MeshElement* e = eIt->next();
4985 SMDSAbs_ElementType type = e->GetType();
4986 if ( type == SMDSAbs_Volume ||
4990 if ( type > highType ) {
4997 if ( nbInitElems == 1 ) {
4998 bool NotCreateEdge = el && el->IsMediumNode(node);
4999 if(!NotCreateEdge) {
5000 vector<TNodeOfNodeListMapItr> newNodesItVec( 1, nList );
5001 list<const SMDS_MeshElement*> newEdges;
5002 sweepElement( node, newNodesItVec, newEdges, nbSteps, srcElements );
5007 // Make a ceiling for each element ie an equal element of last new nodes.
5008 // Find free links of faces - make edges and sweep them into faces.
5010 ElemFeatures polyFace( SMDSAbs_Face, /*isPoly=*/true ), anyFace;
5012 TTElemOfElemListMap::iterator itElem = newElemsMap.begin();
5013 TElemOfVecOfNnlmiMap::iterator itElemNodes = elemNewNodesMap.begin();
5014 for ( ; itElem != newElemsMap.end(); itElem++, itElemNodes++ )
5016 const SMDS_MeshElement* elem = itElem->first;
5017 vector<TNodeOfNodeListMapItr>& vecNewNodes = itElemNodes->second;
5019 if(itElem->second.size()==0) continue;
5021 const bool isQuadratic = elem->IsQuadratic();
5023 if ( elem->GetType() == SMDSAbs_Edge ) {
5024 // create a ceiling edge
5025 if ( !isQuadratic ) {
5026 if ( !aMesh->FindEdge( vecNewNodes[ 0 ]->second.back(),
5027 vecNewNodes[ 1 ]->second.back())) {
5028 myLastCreatedElems.Append(aMesh->AddEdge(vecNewNodes[ 0 ]->second.back(),
5029 vecNewNodes[ 1 ]->second.back()));
5030 srcElements.Append( elem );
5034 if ( !aMesh->FindEdge( vecNewNodes[ 0 ]->second.back(),
5035 vecNewNodes[ 1 ]->second.back(),
5036 vecNewNodes[ 2 ]->second.back())) {
5037 myLastCreatedElems.Append(aMesh->AddEdge(vecNewNodes[ 0 ]->second.back(),
5038 vecNewNodes[ 1 ]->second.back(),
5039 vecNewNodes[ 2 ]->second.back()));
5040 srcElements.Append( elem );
5044 if ( elem->GetType() != SMDSAbs_Face )
5047 bool hasFreeLinks = false;
5049 TIDSortedElemSet avoidSet;
5050 avoidSet.insert( elem );
5052 set<const SMDS_MeshNode*> aFaceLastNodes;
5053 int iNode, nbNodes = vecNewNodes.size();
5054 if ( !isQuadratic ) {
5055 // loop on the face nodes
5056 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
5057 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5058 // look for free links of the face
5059 int iNext = ( iNode + 1 == nbNodes ) ? 0 : iNode + 1;
5060 const SMDS_MeshNode* n1 = vecNewNodes[ iNode ]->first;
5061 const SMDS_MeshNode* n2 = vecNewNodes[ iNext ]->first;
5062 // check if a link n1-n2 is free
5063 if ( ! SMESH_MeshAlgos::FindFaceInSet ( n1, n2, elemSet, avoidSet )) {
5064 hasFreeLinks = true;
5065 // make a new edge and a ceiling for a new edge
5066 const SMDS_MeshElement* edge;
5067 if ( ! ( edge = aMesh->FindEdge( n1, n2 ))) {
5068 myLastCreatedElems.Append( edge = aMesh->AddEdge( n1, n2 )); // free link edge
5069 srcElements.Append( myLastCreatedElems.Last() );
5071 n1 = vecNewNodes[ iNode ]->second.back();
5072 n2 = vecNewNodes[ iNext ]->second.back();
5073 if ( !aMesh->FindEdge( n1, n2 )) {
5074 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2 )); // new edge ceiling
5075 srcElements.Append( edge );
5080 else { // elem is quadratic face
5081 int nbn = nbNodes/2;
5082 for ( iNode = 0; iNode < nbn; iNode++ ) {
5083 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5084 int iNext = ( iNode + 1 == nbn ) ? 0 : iNode + 1;
5085 const SMDS_MeshNode* n1 = vecNewNodes[ iNode ]->first;
5086 const SMDS_MeshNode* n2 = vecNewNodes[ iNext ]->first;
5087 const SMDS_MeshNode* n3 = vecNewNodes[ iNode+nbn ]->first;
5088 // check if a link is free
5089 if ( ! SMESH_MeshAlgos::FindFaceInSet ( n1, n2, elemSet, avoidSet ) &&
5090 ! SMESH_MeshAlgos::FindFaceInSet ( n1, n3, elemSet, avoidSet ) &&
5091 ! SMESH_MeshAlgos::FindFaceInSet ( n3, n2, elemSet, avoidSet ) ) {
5092 hasFreeLinks = true;
5093 // make an edge and a ceiling for a new edge
5095 if ( !aMesh->FindEdge( n1, n2, n3 )) {
5096 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2, n3 )); // free link edge
5097 srcElements.Append( elem );
5099 n1 = vecNewNodes[ iNode ]->second.back();
5100 n2 = vecNewNodes[ iNext ]->second.back();
5101 n3 = vecNewNodes[ iNode+nbn ]->second.back();
5102 if ( !aMesh->FindEdge( n1, n2, n3 )) {
5103 myLastCreatedElems.Append(aMesh->AddEdge( n1, n2, n3 )); // ceiling edge
5104 srcElements.Append( elem );
5108 for ( iNode = nbn; iNode < nbNodes; iNode++ ) {
5109 aFaceLastNodes.insert( vecNewNodes[ iNode ]->second.back() );
5113 // sweep free links into faces
5115 if ( hasFreeLinks ) {
5116 list<const SMDS_MeshElement*> & newVolumes = itElem->second;
5117 int iVol, volNb, nbVolumesByStep = newVolumes.size() / nbSteps;
5119 set<const SMDS_MeshNode*> initNodeSet, topNodeSet, faceNodeSet;
5120 set<const SMDS_MeshNode*> initNodeSetNoCenter/*, topNodeSetNoCenter*/;
5121 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
5122 initNodeSet.insert( vecNewNodes[ iNode ]->first );
5123 topNodeSet .insert( vecNewNodes[ iNode ]->second.back() );
5125 if ( isQuadratic && nbNodes % 2 ) { // node set for the case of a biquadratic
5126 initNodeSetNoCenter = initNodeSet; // swept face and a not biquadratic volume
5127 initNodeSetNoCenter.erase( vecNewNodes.back()->first );
5129 for ( volNb = 0; volNb < nbVolumesByStep; volNb++ ) {
5130 list<const SMDS_MeshElement*>::iterator v = newVolumes.begin();
5131 std::advance( v, volNb );
5132 // find indices of free faces of a volume and their source edges
5133 list< int > freeInd;
5134 list< const SMDS_MeshElement* > srcEdges; // source edges of free faces
5135 SMDS_VolumeTool vTool( *v, /*ignoreCentralNodes=*/false );
5136 int iF, nbF = vTool.NbFaces();
5137 for ( iF = 0; iF < nbF; iF ++ ) {
5138 if (vTool.IsFreeFace( iF ) &&
5139 vTool.GetFaceNodes( iF, faceNodeSet ) &&
5140 initNodeSet != faceNodeSet) // except an initial face
5142 if ( nbSteps == 1 && faceNodeSet == topNodeSet )
5144 if ( faceNodeSet == initNodeSetNoCenter )
5146 freeInd.push_back( iF );
5147 // find source edge of a free face iF
5148 vector<const SMDS_MeshNode*> commonNodes; // shared by the initial and free faces
5149 vector<const SMDS_MeshNode*>::iterator lastCommom;
5150 commonNodes.resize( nbNodes, 0 );
5151 lastCommom = std::set_intersection( faceNodeSet.begin(), faceNodeSet.end(),
5152 initNodeSet.begin(), initNodeSet.end(),
5153 commonNodes.begin());
5154 if ( std::distance( commonNodes.begin(), lastCommom ) == 3 )
5155 srcEdges.push_back(aMesh->FindEdge (commonNodes[0],commonNodes[1],commonNodes[2]));
5157 srcEdges.push_back(aMesh->FindEdge (commonNodes[0],commonNodes[1]));
5159 if ( !srcEdges.back() )
5161 cout << "SMESH_MeshEditor::makeWalls(), no source edge found for a free face #"
5162 << iF << " of volume #" << vTool.ID() << endl;
5167 if ( freeInd.empty() )
5170 // create wall faces for all steps;
5171 // if such a face has been already created by sweep of edge,
5172 // assure that its orientation is OK
5173 for ( int iStep = 0; iStep < nbSteps; iStep++ )
5175 vTool.Set( *v, /*ignoreCentralNodes=*/false );
5176 vTool.SetExternalNormal();
5177 const int nextShift = vTool.IsForward() ? +1 : -1;
5178 list< int >::iterator ind = freeInd.begin();
5179 list< const SMDS_MeshElement* >::iterator srcEdge = srcEdges.begin();
5180 for ( ; ind != freeInd.end(); ++ind, ++srcEdge ) // loop on free faces
5182 const SMDS_MeshNode** nodes = vTool.GetFaceNodes( *ind );
5183 int nbn = vTool.NbFaceNodes( *ind );
5184 const SMDS_MeshElement * f = 0;
5185 if ( nbn == 3 ) ///// triangle
5187 f = aMesh->FindFace( nodes[ 0 ], nodes[ 1 ], nodes[ 2 ]);
5189 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ]) + nextShift ))
5191 const SMDS_MeshNode* newOrder[3] = { nodes[ 1 - nextShift ],
5193 nodes[ 1 + nextShift ] };
5195 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5197 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ], newOrder[ 1 ],
5201 else if ( nbn == 4 ) ///// quadrangle
5203 f = aMesh->FindFace( nodes[ 0 ], nodes[ 1 ], nodes[ 2 ], nodes[ 3 ]);
5205 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ]) + nextShift ))
5207 const SMDS_MeshNode* newOrder[4] = { nodes[ 0 ], nodes[ 2-nextShift ],
5208 nodes[ 2 ], nodes[ 2+nextShift ] };
5210 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5212 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ], newOrder[ 1 ],
5213 newOrder[ 2 ], newOrder[ 3 ]));
5216 else if ( nbn == 6 && isQuadratic ) /////// quadratic triangle
5218 f = aMesh->FindFace( nodes[0], nodes[2], nodes[4], nodes[1], nodes[3], nodes[5] );
5220 nodes[2] != f->GetNodeWrap( f->GetNodeIndex( nodes[0] ) + 2*nextShift ))
5222 const SMDS_MeshNode* newOrder[6] = { nodes[2 - 2*nextShift],
5224 nodes[2 + 2*nextShift],
5225 nodes[3 - 2*nextShift],
5227 nodes[3 + 2*nextShift]};
5229 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5231 myLastCreatedElems.Append(aMesh->AddFace( newOrder[ 0 ],
5239 else if ( nbn == 8 && isQuadratic ) /////// quadratic quadrangle
5241 f = aMesh->FindFace( nodes[0], nodes[2], nodes[4], nodes[6],
5242 nodes[1], nodes[3], nodes[5], nodes[7] );
5244 nodes[ 2 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + 2*nextShift ))
5246 const SMDS_MeshNode* newOrder[8] = { nodes[0],
5247 nodes[4 - 2*nextShift],
5249 nodes[4 + 2*nextShift],
5251 nodes[5 - 2*nextShift],
5253 nodes[5 + 2*nextShift] };
5255 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5257 myLastCreatedElems.Append(aMesh->AddFace(newOrder[ 0 ], newOrder[ 1 ],
5258 newOrder[ 2 ], newOrder[ 3 ],
5259 newOrder[ 4 ], newOrder[ 5 ],
5260 newOrder[ 6 ], newOrder[ 7 ]));
5263 else if ( nbn == 9 && isQuadratic ) /////// bi-quadratic quadrangle
5265 f = aMesh->FindElement( vector<const SMDS_MeshNode*>( nodes, nodes+nbn ),
5266 SMDSAbs_Face, /*noMedium=*/false);
5268 nodes[ 2 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + 2*nextShift ))
5270 const SMDS_MeshNode* newOrder[9] = { nodes[0],
5271 nodes[4 - 2*nextShift],
5273 nodes[4 + 2*nextShift],
5275 nodes[5 - 2*nextShift],
5277 nodes[5 + 2*nextShift],
5280 aMesh->ChangeElementNodes( f, &newOrder[0], nbn );
5282 myLastCreatedElems.Append(aMesh->AddFace(newOrder[ 0 ], newOrder[ 1 ],
5283 newOrder[ 2 ], newOrder[ 3 ],
5284 newOrder[ 4 ], newOrder[ 5 ],
5285 newOrder[ 6 ], newOrder[ 7 ],
5289 else //////// polygon
5291 vector<const SMDS_MeshNode*> polygon_nodes ( nodes, nodes+nbn );
5292 const SMDS_MeshFace * f = aMesh->FindFace( polygon_nodes );
5294 nodes[ 1 ] != f->GetNodeWrap( f->GetNodeIndex( nodes[ 0 ] ) + nextShift ))
5296 if ( !vTool.IsForward() )
5297 std::reverse( polygon_nodes.begin(), polygon_nodes.end());
5299 aMesh->ChangeElementNodes( f, &polygon_nodes[0], nbn );
5301 AddElement( polygon_nodes, polyFace.SetQuad( (*v)->IsQuadratic() ));
5305 while ( srcElements.Length() < myLastCreatedElems.Length() )
5306 srcElements.Append( *srcEdge );
5308 } // loop on free faces
5310 // go to the next volume
5312 while ( iVol++ < nbVolumesByStep ) v++;
5315 } // loop on volumes of one step
5316 } // sweep free links into faces
5318 // Make a ceiling face with a normal external to a volume
5320 // use SMDS_VolumeTool to get a correctly ordered nodes of a ceiling face
5321 SMDS_VolumeTool lastVol( itElem->second.back(), /*ignoreCentralNodes=*/false );
5322 int iF = lastVol.GetFaceIndex( aFaceLastNodes );
5324 if ( iF < 0 && isQuadratic && nbNodes % 2 ) { // remove a central node of biquadratic
5325 aFaceLastNodes.erase( vecNewNodes.back()->second.back() );
5326 iF = lastVol.GetFaceIndex( aFaceLastNodes );
5330 lastVol.SetExternalNormal();
5331 const SMDS_MeshNode** nodes = lastVol.GetFaceNodes( iF );
5332 const int nbn = lastVol.NbFaceNodes( iF );
5333 vector<const SMDS_MeshNode*> nodeVec( nodes, nodes+nbn );
5334 if ( !hasFreeLinks ||
5335 !aMesh->FindElement( nodeVec, SMDSAbs_Face, /*noMedium=*/false) )
5337 const vector<int>& interlace =
5338 SMDS_MeshCell::interlacedSmdsOrder( elem->GetEntityType(), nbn );
5339 SMDS_MeshCell::applyInterlaceRev( interlace, nodeVec );
5341 AddElement( nodeVec, anyFace.Init( elem ));
5343 while ( srcElements.Length() < myLastCreatedElems.Length() )
5344 srcElements.Append( elem );
5347 } // loop on swept elements
5350 //=======================================================================
5351 //function : RotationSweep
5353 //=======================================================================
5355 SMESH_MeshEditor::PGroupIDs
5356 SMESH_MeshEditor::RotationSweep(TIDSortedElemSet theElemSets[2],
5357 const gp_Ax1& theAxis,
5358 const double theAngle,
5359 const int theNbSteps,
5360 const double theTol,
5361 const bool theMakeGroups,
5362 const bool theMakeWalls)
5364 myLastCreatedElems.Clear();
5365 myLastCreatedNodes.Clear();
5367 // source elements for each generated one
5368 SMESH_SequenceOfElemPtr srcElems, srcNodes;
5371 aTrsf.SetRotation( theAxis, theAngle );
5373 aTrsf2.SetRotation( theAxis, theAngle/2. );
5375 gp_Lin aLine( theAxis );
5376 double aSqTol = theTol * theTol;
5378 SMESHDS_Mesh* aMesh = GetMeshDS();
5380 TNodeOfNodeListMap mapNewNodes;
5381 TElemOfVecOfNnlmiMap mapElemNewNodes;
5382 TTElemOfElemListMap newElemsMap;
5384 const bool isQuadraticMesh = bool( myMesh->NbEdges(ORDER_QUADRATIC) +
5385 myMesh->NbFaces(ORDER_QUADRATIC) +
5386 myMesh->NbVolumes(ORDER_QUADRATIC) );
5387 // loop on theElemSets
5388 setElemsFirst( theElemSets );
5389 TIDSortedElemSet::iterator itElem;
5390 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
5392 TIDSortedElemSet& theElems = theElemSets[ is2ndSet ];
5393 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
5394 const SMDS_MeshElement* elem = *itElem;
5395 if ( !elem || elem->GetType() == SMDSAbs_Volume )
5397 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
5398 newNodesItVec.reserve( elem->NbNodes() );
5400 // loop on elem nodes
5401 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
5402 while ( itN->more() )
5404 const SMDS_MeshNode* node = cast2Node( itN->next() );
5406 gp_XYZ aXYZ( node->X(), node->Y(), node->Z() );
5408 aXYZ.Coord( coord[0], coord[1], coord[2] );
5409 bool isOnAxis = ( aLine.SquareDistance( aXYZ ) <= aSqTol );
5411 // check if a node has been already sweeped
5412 TNodeOfNodeListMapItr nIt =
5413 mapNewNodes.insert( make_pair( node, list<const SMDS_MeshNode*>() )).first;
5414 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
5415 if ( listNewNodes.empty() )
5417 // check if we are to create medium nodes between corner ones
5418 bool needMediumNodes = false;
5419 if ( isQuadraticMesh )
5421 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator();
5422 while (it->more() && !needMediumNodes )
5424 const SMDS_MeshElement* invElem = it->next();
5425 if ( invElem != elem && !theElems.count( invElem )) continue;
5426 needMediumNodes = ( invElem->IsQuadratic() && !invElem->IsMediumNode(node) );
5427 if ( !needMediumNodes && invElem->GetEntityType() == SMDSEntity_BiQuad_Quadrangle )
5428 needMediumNodes = true;
5433 const SMDS_MeshNode * newNode = node;
5434 for ( int i = 0; i < theNbSteps; i++ ) {
5436 if ( needMediumNodes ) // create a medium node
5438 aTrsf2.Transforms( coord[0], coord[1], coord[2] );
5439 newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
5440 myLastCreatedNodes.Append(newNode);
5441 srcNodes.Append( node );
5442 listNewNodes.push_back( newNode );
5443 aTrsf2.Transforms( coord[0], coord[1], coord[2] );
5446 aTrsf.Transforms( coord[0], coord[1], coord[2] );
5448 // create a corner node
5449 newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
5450 myLastCreatedNodes.Append(newNode);
5451 srcNodes.Append( node );
5452 listNewNodes.push_back( newNode );
5455 listNewNodes.push_back( newNode );
5456 // if ( needMediumNodes )
5457 // listNewNodes.push_back( newNode );
5461 newNodesItVec.push_back( nIt );
5463 // make new elements
5464 sweepElement( elem, newNodesItVec, newElemsMap[elem], theNbSteps, srcElems );
5469 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], theNbSteps, srcElems );
5471 PGroupIDs newGroupIDs;
5472 if ( theMakeGroups )
5473 newGroupIDs = generateGroups( srcNodes, srcElems, "rotated");
5478 //=======================================================================
5479 //function : ExtrusParam
5480 //purpose : standard construction
5481 //=======================================================================
5483 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const gp_Vec& theStep,
5484 const int theNbSteps,
5485 const std::list<double>& theScales,
5486 const gp_XYZ* theBasePoint,
5488 const double theTolerance):
5490 myBaseP( Precision::Infinite(), 0, 0 ),
5491 myFlags( theFlags ),
5492 myTolerance( theTolerance ),
5493 myElemsToUse( NULL )
5495 mySteps = new TColStd_HSequenceOfReal;
5496 const double stepSize = theStep.Magnitude();
5497 for (int i=1; i<=theNbSteps; i++ )
5498 mySteps->Append( stepSize );
5500 int nbScales = theScales.size();
5503 if ( IsLinearVariation() && nbScales < theNbSteps )
5505 myScales.reserve( theNbSteps );
5506 std::list<double>::const_iterator scale = theScales.begin();
5507 double prevScale = 1.0;
5508 for ( int iSc = 1; scale != theScales.end(); ++scale, ++iSc )
5510 int iStep = int( iSc / double( nbScales ) * theNbSteps + 0.5 );
5511 int stDelta = Max( 1, iStep - myScales.size());
5512 double scDelta = ( *scale - prevScale ) / stDelta;
5513 for ( int iStep = 0; iStep < stDelta; ++iStep )
5515 myScales.push_back( prevScale + scDelta );
5516 prevScale = myScales.back();
5523 myScales.assign( theScales.begin(), theScales.end() );
5528 myBaseP = *theBasePoint;
5531 if (( theFlags & EXTRUSION_FLAG_SEW ) &&
5532 ( theTolerance > 0 ))
5534 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDirAndSew;
5538 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDir;
5542 //=======================================================================
5543 //function : ExtrusParam
5544 //purpose : steps are given explicitly
5545 //=======================================================================
5547 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const gp_Dir& theDir,
5548 Handle(TColStd_HSequenceOfReal) theSteps,
5550 const double theTolerance):
5552 mySteps( theSteps ),
5553 myFlags( theFlags ),
5554 myTolerance( theTolerance ),
5555 myElemsToUse( NULL )
5557 if (( theFlags & EXTRUSION_FLAG_SEW ) &&
5558 ( theTolerance > 0 ))
5560 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDirAndSew;
5564 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByDir;
5568 //=======================================================================
5569 //function : ExtrusParam
5570 //purpose : for extrusion by normal
5571 //=======================================================================
5573 SMESH_MeshEditor::ExtrusParam::ExtrusParam( const double theStepSize,
5574 const int theNbSteps,
5578 mySteps( new TColStd_HSequenceOfReal ),
5579 myFlags( theFlags ),
5581 myElemsToUse( NULL )
5583 for (int i = 0; i < theNbSteps; i++ )
5584 mySteps->Append( theStepSize );
5588 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByNormal1D;
5592 myMakeNodesFun = & SMESH_MeshEditor::ExtrusParam::makeNodesByNormal2D;
5596 //=======================================================================
5597 //function : ExtrusParam::SetElementsToUse
5598 //purpose : stores elements to use for extrusion by normal, depending on
5599 // state of EXTRUSION_FLAG_USE_INPUT_ELEMS_ONLY flag;
5600 // define myBaseP for scaling
5601 //=======================================================================
5603 void SMESH_MeshEditor::ExtrusParam::SetElementsToUse( const TIDSortedElemSet& elems,
5604 const TIDSortedElemSet& nodes )
5606 myElemsToUse = ToUseInpElemsOnly() ? & elems : 0;
5608 if ( Precision::IsInfinite( myBaseP.X() )) // myBaseP not defined
5610 myBaseP.SetCoord( 0.,0.,0. );
5611 TIDSortedElemSet newNodes;
5613 const TIDSortedElemSet* elemSets[] = { &elems, &nodes };
5614 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
5616 const TIDSortedElemSet& elements = *( elemSets[ is2ndSet ]);
5617 TIDSortedElemSet::const_iterator itElem = elements.begin();
5618 for ( ; itElem != elements.end(); itElem++ )
5620 const SMDS_MeshElement* elem = *itElem;
5621 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
5622 while ( itN->more() ) {
5623 const SMDS_MeshElement* node = itN->next();
5624 if ( newNodes.insert( node ).second )
5625 myBaseP += SMESH_TNodeXYZ( node );
5629 myBaseP /= newNodes.size();
5633 //=======================================================================
5634 //function : ExtrusParam::beginStepIter
5635 //purpose : prepare iteration on steps
5636 //=======================================================================
5638 void SMESH_MeshEditor::ExtrusParam::beginStepIter( bool withMediumNodes )
5640 myWithMediumNodes = withMediumNodes;
5644 //=======================================================================
5645 //function : ExtrusParam::moreSteps
5646 //purpose : are there more steps?
5647 //=======================================================================
5649 bool SMESH_MeshEditor::ExtrusParam::moreSteps()
5651 return myNextStep <= mySteps->Length() || !myCurSteps.empty();
5653 //=======================================================================
5654 //function : ExtrusParam::nextStep
5655 //purpose : returns the next step
5656 //=======================================================================
5658 double SMESH_MeshEditor::ExtrusParam::nextStep()
5661 if ( !myCurSteps.empty() )
5663 res = myCurSteps.back();
5664 myCurSteps.pop_back();
5666 else if ( myNextStep <= mySteps->Length() )
5668 myCurSteps.push_back( mySteps->Value( myNextStep ));
5670 if ( myWithMediumNodes )
5672 myCurSteps.back() /= 2.;
5673 myCurSteps.push_back( myCurSteps.back() );
5680 //=======================================================================
5681 //function : ExtrusParam::makeNodesByDir
5682 //purpose : create nodes for standard extrusion
5683 //=======================================================================
5685 int SMESH_MeshEditor::ExtrusParam::
5686 makeNodesByDir( SMESHDS_Mesh* mesh,
5687 const SMDS_MeshNode* srcNode,
5688 std::list<const SMDS_MeshNode*> & newNodes,
5689 const bool makeMediumNodes)
5691 gp_XYZ p = SMESH_TNodeXYZ( srcNode );
5694 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5696 p += myDir.XYZ() * nextStep();
5697 const SMDS_MeshNode * newNode = mesh->AddNode( p.X(), p.Y(), p.Z() );
5698 newNodes.push_back( newNode );
5701 if ( !myScales.empty() )
5703 if ( makeMediumNodes && myMediumScales.empty() )
5705 myMediumScales.resize( myScales.size() );
5706 double prevFactor = 1.;
5707 for ( size_t i = 0; i < myScales.size(); ++i )
5709 myMediumScales[i] = 0.5 * ( prevFactor + myScales[i] );
5710 prevFactor = myScales[i];
5713 typedef std::vector<double>::iterator ScaleIt;
5714 ScaleIt scales[] = { myScales.begin(), myMediumScales.begin() };
5716 size_t iSc = 0, nbScales = myScales.size() + myMediumScales.size();
5718 gp_XYZ center = myBaseP;
5719 std::list<const SMDS_MeshNode*>::iterator nIt = newNodes.begin();
5721 for ( beginStepIter( makeMediumNodes ); moreSteps() && ( iN < nbScales ); ++nIt, ++iN )
5723 center += myDir.XYZ() * nextStep();
5725 iSc += int( makeMediumNodes );
5726 ScaleIt& scale = scales[ iSc % 2 ];
5728 gp_XYZ xyz = SMESH_TNodeXYZ( *nIt );
5729 xyz = ( *scale * ( xyz - center )) + center;
5730 mesh->MoveNode( *nIt, xyz.X(), xyz.Y(), xyz.Z() );
5738 //=======================================================================
5739 //function : ExtrusParam::makeNodesByDirAndSew
5740 //purpose : create nodes for standard extrusion with sewing
5741 //=======================================================================
5743 int SMESH_MeshEditor::ExtrusParam::
5744 makeNodesByDirAndSew( SMESHDS_Mesh* mesh,
5745 const SMDS_MeshNode* srcNode,
5746 std::list<const SMDS_MeshNode*> & newNodes,
5747 const bool makeMediumNodes)
5749 gp_XYZ P1 = SMESH_TNodeXYZ( srcNode );
5752 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5754 P1 += myDir.XYZ() * nextStep();
5756 // try to search in sequence of existing nodes
5757 // if myNodes.Length()>0 we 'nave to use given sequence
5758 // else - use all nodes of mesh
5759 const SMDS_MeshNode * node = 0;
5760 if ( myNodes.Length() > 0 ) {
5762 for(i=1; i<=myNodes.Length(); i++) {
5763 gp_XYZ P2 = SMESH_TNodeXYZ( myNodes.Value(i) );
5764 if (( P1 - P2 ).SquareModulus() < myTolerance * myTolerance )
5766 node = myNodes.Value(i);
5772 SMDS_NodeIteratorPtr itn = mesh->nodesIterator();
5773 while(itn->more()) {
5774 SMESH_TNodeXYZ P2( itn->next() );
5775 if (( P1 - P2 ).SquareModulus() < myTolerance * myTolerance )
5784 node = mesh->AddNode( P1.X(), P1.Y(), P1.Z() );
5786 newNodes.push_back( node );
5793 //=======================================================================
5794 //function : ExtrusParam::makeNodesByNormal2D
5795 //purpose : create nodes for extrusion using normals of faces
5796 //=======================================================================
5798 int SMESH_MeshEditor::ExtrusParam::
5799 makeNodesByNormal2D( SMESHDS_Mesh* mesh,
5800 const SMDS_MeshNode* srcNode,
5801 std::list<const SMDS_MeshNode*> & newNodes,
5802 const bool makeMediumNodes)
5804 const bool alongAvgNorm = ( myFlags & EXTRUSION_FLAG_BY_AVG_NORMAL );
5806 gp_XYZ p = SMESH_TNodeXYZ( srcNode );
5808 // get normals to faces sharing srcNode
5809 vector< gp_XYZ > norms, baryCenters;
5810 gp_XYZ norm, avgNorm( 0,0,0 );
5811 SMDS_ElemIteratorPtr faceIt = srcNode->GetInverseElementIterator( SMDSAbs_Face );
5812 while ( faceIt->more() )
5814 const SMDS_MeshElement* face = faceIt->next();
5815 if ( myElemsToUse && !myElemsToUse->count( face ))
5817 if ( SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
5819 norms.push_back( norm );
5821 if ( !alongAvgNorm )
5825 for ( SMDS_ElemIteratorPtr nIt = face->nodesIterator(); nIt->more(); ++nbN )
5826 bc += SMESH_TNodeXYZ( nIt->next() );
5827 baryCenters.push_back( bc / nbN );
5832 if ( norms.empty() ) return 0;
5834 double normSize = avgNorm.Modulus();
5835 if ( normSize < std::numeric_limits<double>::min() )
5838 if ( myFlags & EXTRUSION_FLAG_BY_AVG_NORMAL ) // extrude along avgNorm
5841 return makeNodesByDir( mesh, srcNode, newNodes, makeMediumNodes );
5844 avgNorm /= normSize;
5847 for ( beginStepIter( makeMediumNodes ); moreSteps(); ++nbNodes ) // loop on steps
5850 double stepSize = nextStep();
5852 if ( norms.size() > 1 )
5854 for ( size_t iF = 0; iF < norms.size(); ++iF ) // loop on faces
5856 // translate plane of a face
5857 baryCenters[ iF ] += norms[ iF ] * stepSize;
5859 // find point of intersection of the face plane located at baryCenters[ iF ]
5860 // and avgNorm located at pNew
5861 double d = -( norms[ iF ] * baryCenters[ iF ]); // d of plane equation ax+by+cz+d=0
5862 double dot = ( norms[ iF ] * avgNorm );
5863 if ( dot < std::numeric_limits<double>::min() )
5864 dot = stepSize * 1e-3;
5865 double step = -( norms[ iF ] * pNew + d ) / dot;
5866 pNew += step * avgNorm;
5871 pNew += stepSize * avgNorm;
5875 const SMDS_MeshNode * newNode = mesh->AddNode( p.X(), p.Y(), p.Z() );
5876 newNodes.push_back( newNode );
5881 //=======================================================================
5882 //function : ExtrusParam::makeNodesByNormal1D
5883 //purpose : create nodes for extrusion using normals of edges
5884 //=======================================================================
5886 int SMESH_MeshEditor::ExtrusParam::
5887 makeNodesByNormal1D( SMESHDS_Mesh* mesh,
5888 const SMDS_MeshNode* srcNode,
5889 std::list<const SMDS_MeshNode*> & newNodes,
5890 const bool makeMediumNodes)
5892 throw SALOME_Exception("Extrusion 1D by Normal not implemented");
5896 //=======================================================================
5897 //function : ExtrusionSweep
5899 //=======================================================================
5901 SMESH_MeshEditor::PGroupIDs
5902 SMESH_MeshEditor::ExtrusionSweep (TIDSortedElemSet theElems[2],
5903 const gp_Vec& theStep,
5904 const int theNbSteps,
5905 TTElemOfElemListMap& newElemsMap,
5907 const double theTolerance)
5909 ExtrusParam aParams( theStep, theNbSteps, std::list<double>(), 0, theFlags, theTolerance );
5910 return ExtrusionSweep( theElems, aParams, newElemsMap );
5914 //=======================================================================
5915 //function : ExtrusionSweep
5917 //=======================================================================
5919 SMESH_MeshEditor::PGroupIDs
5920 SMESH_MeshEditor::ExtrusionSweep (TIDSortedElemSet theElemSets[2],
5921 ExtrusParam& theParams,
5922 TTElemOfElemListMap& newElemsMap)
5924 myLastCreatedElems.Clear();
5925 myLastCreatedNodes.Clear();
5927 // source elements for each generated one
5928 SMESH_SequenceOfElemPtr srcElems, srcNodes;
5930 setElemsFirst( theElemSets );
5931 const int nbSteps = theParams.NbSteps();
5932 theParams.SetElementsToUse( theElemSets[0], theElemSets[1] );
5934 TNodeOfNodeListMap mapNewNodes;
5935 TElemOfVecOfNnlmiMap mapElemNewNodes;
5937 const bool isQuadraticMesh = bool( myMesh->NbEdges(ORDER_QUADRATIC) +
5938 myMesh->NbFaces(ORDER_QUADRATIC) +
5939 myMesh->NbVolumes(ORDER_QUADRATIC) );
5941 TIDSortedElemSet::iterator itElem;
5942 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
5944 TIDSortedElemSet& theElems = theElemSets[ is2ndSet ];
5945 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
5947 // check element type
5948 const SMDS_MeshElement* elem = *itElem;
5949 if ( !elem || elem->GetType() == SMDSAbs_Volume )
5952 const size_t nbNodes = elem->NbNodes();
5953 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
5954 newNodesItVec.reserve( nbNodes );
5956 // loop on elem nodes
5957 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
5958 while ( itN->more() )
5960 // check if a node has been already sweeped
5961 const SMDS_MeshNode* node = cast2Node( itN->next() );
5962 TNodeOfNodeListMap::iterator nIt =
5963 mapNewNodes.insert( make_pair( node, list<const SMDS_MeshNode*>() )).first;
5964 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
5965 if ( listNewNodes.empty() )
5969 // check if we are to create medium nodes between corner ones
5970 bool needMediumNodes = false;
5971 if ( isQuadraticMesh )
5973 SMDS_ElemIteratorPtr it = node->GetInverseElementIterator();
5974 while (it->more() && !needMediumNodes )
5976 const SMDS_MeshElement* invElem = it->next();
5977 if ( invElem != elem && !theElems.count( invElem )) continue;
5978 needMediumNodes = ( invElem->IsQuadratic() && !invElem->IsMediumNode(node) );
5979 if ( !needMediumNodes && invElem->GetEntityType() == SMDSEntity_BiQuad_Quadrangle )
5980 needMediumNodes = true;
5983 // create nodes for all steps
5984 if ( theParams.MakeNodes( GetMeshDS(), node, listNewNodes, needMediumNodes ))
5986 list<const SMDS_MeshNode*>::iterator newNodesIt = listNewNodes.begin();
5987 for ( ; newNodesIt != listNewNodes.end(); ++newNodesIt )
5989 myLastCreatedNodes.Append( *newNodesIt );
5990 srcNodes.Append( node );
5995 break; // newNodesItVec will be shorter than nbNodes
5998 newNodesItVec.push_back( nIt );
6000 // make new elements
6001 if ( newNodesItVec.size() == nbNodes )
6002 sweepElement( elem, newNodesItVec, newElemsMap[elem], nbSteps, srcElems );
6006 if ( theParams.ToMakeBoundary() ) {
6007 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], nbSteps, srcElems );
6009 PGroupIDs newGroupIDs;
6010 if ( theParams.ToMakeGroups() )
6011 newGroupIDs = generateGroups( srcNodes, srcElems, "extruded");
6016 //=======================================================================
6017 //function : ExtrusionAlongTrack
6019 //=======================================================================
6020 SMESH_MeshEditor::Extrusion_Error
6021 SMESH_MeshEditor::ExtrusionAlongTrack (TIDSortedElemSet theElements[2],
6022 SMESH_subMesh* theTrack,
6023 const SMDS_MeshNode* theN1,
6024 const bool theHasAngles,
6025 list<double>& theAngles,
6026 const bool theLinearVariation,
6027 const bool theHasRefPoint,
6028 const gp_Pnt& theRefPoint,
6029 const bool theMakeGroups)
6031 myLastCreatedElems.Clear();
6032 myLastCreatedNodes.Clear();
6035 std::list<double> aPrms;
6036 TIDSortedElemSet::iterator itElem;
6039 TopoDS_Edge aTrackEdge;
6040 TopoDS_Vertex aV1, aV2;
6042 SMDS_ElemIteratorPtr aItE;
6043 SMDS_NodeIteratorPtr aItN;
6044 SMDSAbs_ElementType aTypeE;
6046 TNodeOfNodeListMap mapNewNodes;
6049 aNbE = theElements[0].size() + theElements[1].size();
6052 return EXTR_NO_ELEMENTS;
6054 // 1.1 Track Pattern
6057 SMESHDS_SubMesh* pSubMeshDS = theTrack->GetSubMeshDS();
6059 return ExtrusionAlongTrack( theElements, theTrack->GetFather(), theN1,
6060 theHasAngles, theAngles, theLinearVariation,
6061 theHasRefPoint, theRefPoint, theMakeGroups );
6063 aItE = pSubMeshDS->GetElements();
6064 while ( aItE->more() ) {
6065 const SMDS_MeshElement* pE = aItE->next();
6066 aTypeE = pE->GetType();
6067 // Pattern must contain links only
6068 if ( aTypeE != SMDSAbs_Edge )
6069 return EXTR_PATH_NOT_EDGE;
6072 list<SMESH_MeshEditor_PathPoint> fullList;
6074 const TopoDS_Shape& aS = theTrack->GetSubShape();
6075 // Sub-shape for the Pattern must be an Edge or Wire
6076 if( aS.ShapeType() == TopAbs_EDGE ) {
6077 aTrackEdge = TopoDS::Edge( aS );
6078 // the Edge must not be degenerated
6079 if ( SMESH_Algo::isDegenerated( aTrackEdge ) )
6080 return EXTR_BAD_PATH_SHAPE;
6081 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6082 aItN = theTrack->GetFather()->GetSubMesh( aV1 )->GetSubMeshDS()->GetNodes();
6083 const SMDS_MeshNode* aN1 = aItN->next();
6084 aItN = theTrack->GetFather()->GetSubMesh( aV2 )->GetSubMeshDS()->GetNodes();
6085 const SMDS_MeshNode* aN2 = aItN->next();
6086 // starting node must be aN1 or aN2
6087 if ( !( aN1 == theN1 || aN2 == theN1 ) )
6088 return EXTR_BAD_STARTING_NODE;
6089 aItN = pSubMeshDS->GetNodes();
6090 while ( aItN->more() ) {
6091 const SMDS_MeshNode* pNode = aItN->next();
6092 const SMDS_EdgePosition* pEPos =
6093 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6094 double aT = pEPos->GetUParameter();
6095 aPrms.push_back( aT );
6097 //Extrusion_Error err =
6098 MakeEdgePathPoints(aPrms, aTrackEdge, (aN1==theN1), fullList);
6099 } else if( aS.ShapeType() == TopAbs_WIRE ) {
6100 list< SMESH_subMesh* > LSM;
6101 TopTools_SequenceOfShape Edges;
6102 SMESH_subMeshIteratorPtr itSM = theTrack->getDependsOnIterator(false,true);
6103 while(itSM->more()) {
6104 SMESH_subMesh* SM = itSM->next();
6106 const TopoDS_Shape& aS = SM->GetSubShape();
6109 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6110 int startNid = theN1->GetID();
6111 TColStd_MapOfInteger UsedNums;
6113 int NbEdges = Edges.Length();
6115 for(; i<=NbEdges; i++) {
6117 list< SMESH_subMesh* >::iterator itLSM = LSM.begin();
6118 for(; itLSM!=LSM.end(); itLSM++) {
6120 if(UsedNums.Contains(k)) continue;
6121 aTrackEdge = TopoDS::Edge( Edges.Value(k) );
6122 SMESH_subMesh* locTrack = *itLSM;
6123 SMESHDS_SubMesh* locMeshDS = locTrack->GetSubMeshDS();
6124 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6125 aItN = locTrack->GetFather()->GetSubMesh(aV1)->GetSubMeshDS()->GetNodes();
6126 const SMDS_MeshNode* aN1 = aItN->next();
6127 aItN = locTrack->GetFather()->GetSubMesh(aV2)->GetSubMeshDS()->GetNodes();
6128 const SMDS_MeshNode* aN2 = aItN->next();
6129 // starting node must be aN1 or aN2
6130 if ( !( aN1->GetID() == startNid || aN2->GetID() == startNid ) ) continue;
6131 // 2. Collect parameters on the track edge
6133 aItN = locMeshDS->GetNodes();
6134 while ( aItN->more() ) {
6135 const SMDS_MeshNode* pNode = aItN->next();
6136 const SMDS_EdgePosition* pEPos =
6137 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6138 double aT = pEPos->GetUParameter();
6139 aPrms.push_back( aT );
6141 list<SMESH_MeshEditor_PathPoint> LPP;
6142 //Extrusion_Error err =
6143 MakeEdgePathPoints(aPrms, aTrackEdge,(aN1->GetID()==startNid), LPP);
6144 LLPPs.push_back(LPP);
6146 // update startN for search following egde
6147 if( aN1->GetID() == startNid ) startNid = aN2->GetID();
6148 else startNid = aN1->GetID();
6152 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6153 list<SMESH_MeshEditor_PathPoint> firstList = *itLLPP;
6154 list<SMESH_MeshEditor_PathPoint>::iterator itPP = firstList.begin();
6155 for(; itPP!=firstList.end(); itPP++) {
6156 fullList.push_back( *itPP );
6158 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6159 fullList.pop_back();
6161 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6162 list<SMESH_MeshEditor_PathPoint> currList = *itLLPP;
6163 itPP = currList.begin();
6164 SMESH_MeshEditor_PathPoint PP2 = currList.front();
6165 gp_Dir D1 = PP1.Tangent();
6166 gp_Dir D2 = PP2.Tangent();
6167 gp_Dir Dnew( gp_Vec( (D1.X()+D2.X())/2, (D1.Y()+D2.Y())/2,
6168 (D1.Z()+D2.Z())/2 ) );
6169 PP1.SetTangent(Dnew);
6170 fullList.push_back(PP1);
6172 for(; itPP!=firstList.end(); itPP++) {
6173 fullList.push_back( *itPP );
6175 PP1 = fullList.back();
6176 fullList.pop_back();
6178 // if wire not closed
6179 fullList.push_back(PP1);
6183 return EXTR_BAD_PATH_SHAPE;
6186 return MakeExtrElements(theElements, fullList, theHasAngles, theAngles, theLinearVariation,
6187 theHasRefPoint, theRefPoint, theMakeGroups);
6191 //=======================================================================
6192 //function : ExtrusionAlongTrack
6194 //=======================================================================
6195 SMESH_MeshEditor::Extrusion_Error
6196 SMESH_MeshEditor::ExtrusionAlongTrack (TIDSortedElemSet theElements[2],
6197 SMESH_Mesh* theTrack,
6198 const SMDS_MeshNode* theN1,
6199 const bool theHasAngles,
6200 list<double>& theAngles,
6201 const bool theLinearVariation,
6202 const bool theHasRefPoint,
6203 const gp_Pnt& theRefPoint,
6204 const bool theMakeGroups)
6206 myLastCreatedElems.Clear();
6207 myLastCreatedNodes.Clear();
6210 std::list<double> aPrms;
6211 TIDSortedElemSet::iterator itElem;
6214 TopoDS_Edge aTrackEdge;
6215 TopoDS_Vertex aV1, aV2;
6217 SMDS_ElemIteratorPtr aItE;
6218 SMDS_NodeIteratorPtr aItN;
6219 SMDSAbs_ElementType aTypeE;
6221 TNodeOfNodeListMap mapNewNodes;
6224 aNbE = theElements[0].size() + theElements[1].size();
6227 return EXTR_NO_ELEMENTS;
6229 // 1.1 Track Pattern
6232 SMESHDS_Mesh* pMeshDS = theTrack->GetMeshDS();
6234 aItE = pMeshDS->elementsIterator();
6235 while ( aItE->more() ) {
6236 const SMDS_MeshElement* pE = aItE->next();
6237 aTypeE = pE->GetType();
6238 // Pattern must contain links only
6239 if ( aTypeE != SMDSAbs_Edge )
6240 return EXTR_PATH_NOT_EDGE;
6243 list<SMESH_MeshEditor_PathPoint> fullList;
6245 const TopoDS_Shape& aS = theTrack->GetShapeToMesh();
6247 if ( !theTrack->HasShapeToMesh() ) {
6248 //Mesh without shape
6249 const SMDS_MeshNode* currentNode = NULL;
6250 const SMDS_MeshNode* prevNode = theN1;
6251 std::vector<const SMDS_MeshNode*> aNodesList;
6252 aNodesList.push_back(theN1);
6253 int nbEdges = 0, conn=0;
6254 const SMDS_MeshElement* prevElem = NULL;
6255 const SMDS_MeshElement* currentElem = NULL;
6256 int totalNbEdges = theTrack->NbEdges();
6257 SMDS_ElemIteratorPtr nIt;
6260 if( !theTrack->GetMeshDS()->Contains(theN1) ) {
6261 return EXTR_BAD_STARTING_NODE;
6264 conn = nbEdgeConnectivity(theN1);
6266 return EXTR_PATH_NOT_EDGE;
6268 aItE = theN1->GetInverseElementIterator();
6269 prevElem = aItE->next();
6270 currentElem = prevElem;
6272 if(totalNbEdges == 1 ) {
6273 nIt = currentElem->nodesIterator();
6274 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6275 if(currentNode == prevNode)
6276 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6277 aNodesList.push_back(currentNode);
6279 nIt = currentElem->nodesIterator();
6280 while( nIt->more() ) {
6281 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6282 if(currentNode == prevNode)
6283 currentNode = static_cast<const SMDS_MeshNode*>(nIt->next());
6284 aNodesList.push_back(currentNode);
6286 //case of the closed mesh
6287 if(currentNode == theN1) {
6292 conn = nbEdgeConnectivity(currentNode);
6294 return EXTR_PATH_NOT_EDGE;
6295 }else if( conn == 1 && nbEdges > 0 ) {
6300 prevNode = currentNode;
6301 aItE = currentNode->GetInverseElementIterator();
6302 currentElem = aItE->next();
6303 if( currentElem == prevElem)
6304 currentElem = aItE->next();
6305 nIt = currentElem->nodesIterator();
6306 prevElem = currentElem;
6312 if(nbEdges != totalNbEdges)
6313 return EXTR_PATH_NOT_EDGE;
6315 TopTools_SequenceOfShape Edges;
6316 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6317 int startNid = theN1->GetID();
6318 for ( size_t i = 1; i < aNodesList.size(); i++ )
6320 gp_Pnt p1 = SMESH_TNodeXYZ( aNodesList[i-1] );
6321 gp_Pnt p2 = SMESH_TNodeXYZ( aNodesList[i] );
6322 TopoDS_Edge e = BRepBuilderAPI_MakeEdge( p1, p2 );
6323 list<SMESH_MeshEditor_PathPoint> LPP;
6325 MakeEdgePathPoints(aPrms, e, (aNodesList[i-1]->GetID()==startNid), LPP);
6326 LLPPs.push_back(LPP);
6327 if ( aNodesList[i-1]->GetID() == startNid ) startNid = aNodesList[i ]->GetID();
6328 else startNid = aNodesList[i-1]->GetID();
6331 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6332 list<SMESH_MeshEditor_PathPoint> firstList = *itLLPP;
6333 list<SMESH_MeshEditor_PathPoint>::iterator itPP = firstList.begin();
6334 for(; itPP!=firstList.end(); itPP++) {
6335 fullList.push_back( *itPP );
6338 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6339 SMESH_MeshEditor_PathPoint PP2;
6340 fullList.pop_back();
6342 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6343 list<SMESH_MeshEditor_PathPoint> currList = *itLLPP;
6344 itPP = currList.begin();
6345 PP2 = currList.front();
6346 gp_Dir D1 = PP1.Tangent();
6347 gp_Dir D2 = PP2.Tangent();
6348 gp_Dir Dnew( 0.5 * ( D1.XYZ() + D2.XYZ() ));
6349 PP1.SetTangent(Dnew);
6350 fullList.push_back(PP1);
6352 for(; itPP!=currList.end(); itPP++) {
6353 fullList.push_back( *itPP );
6355 PP1 = fullList.back();
6356 fullList.pop_back();
6358 fullList.push_back(PP1);
6360 } // Sub-shape for the Pattern must be an Edge or Wire
6361 else if ( aS.ShapeType() == TopAbs_EDGE )
6363 aTrackEdge = TopoDS::Edge( aS );
6364 // the Edge must not be degenerated
6365 if ( SMESH_Algo::isDegenerated( aTrackEdge ) )
6366 return EXTR_BAD_PATH_SHAPE;
6367 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6368 const SMDS_MeshNode* aN1 = SMESH_Algo::VertexNode( aV1, pMeshDS );
6369 const SMDS_MeshNode* aN2 = SMESH_Algo::VertexNode( aV2, pMeshDS );
6370 // starting node must be aN1 or aN2
6371 if ( !( aN1 == theN1 || aN2 == theN1 ) )
6372 return EXTR_BAD_STARTING_NODE;
6373 aItN = pMeshDS->nodesIterator();
6374 while ( aItN->more() ) {
6375 const SMDS_MeshNode* pNode = aItN->next();
6376 if( pNode==aN1 || pNode==aN2 ) continue;
6377 const SMDS_EdgePosition* pEPos =
6378 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6379 double aT = pEPos->GetUParameter();
6380 aPrms.push_back( aT );
6382 //Extrusion_Error err =
6383 MakeEdgePathPoints(aPrms, aTrackEdge, (aN1==theN1), fullList);
6385 else if( aS.ShapeType() == TopAbs_WIRE ) {
6386 list< SMESH_subMesh* > LSM;
6387 TopTools_SequenceOfShape Edges;
6388 TopExp_Explorer eExp(aS, TopAbs_EDGE);
6389 for(; eExp.More(); eExp.Next()) {
6390 TopoDS_Edge E = TopoDS::Edge( eExp.Current() );
6391 if( SMESH_Algo::isDegenerated(E) ) continue;
6392 SMESH_subMesh* SM = theTrack->GetSubMesh(E);
6398 list< list<SMESH_MeshEditor_PathPoint> > LLPPs;
6399 TopoDS_Vertex aVprev;
6400 TColStd_MapOfInteger UsedNums;
6401 int NbEdges = Edges.Length();
6403 for(; i<=NbEdges; i++) {
6405 list< SMESH_subMesh* >::iterator itLSM = LSM.begin();
6406 for(; itLSM!=LSM.end(); itLSM++) {
6408 if(UsedNums.Contains(k)) continue;
6409 aTrackEdge = TopoDS::Edge( Edges.Value(k) );
6410 SMESH_subMesh* locTrack = *itLSM;
6411 SMESHDS_SubMesh* locMeshDS = locTrack->GetSubMeshDS();
6412 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6413 bool aN1isOK = false, aN2isOK = false;
6414 if ( aVprev.IsNull() ) {
6415 // if previous vertex is not yet defined, it means that we in the beginning of wire
6416 // and we have to find initial vertex corresponding to starting node theN1
6417 const SMDS_MeshNode* aN1 = SMESH_Algo::VertexNode( aV1, pMeshDS );
6418 const SMDS_MeshNode* aN2 = SMESH_Algo::VertexNode( aV2, pMeshDS );
6419 // starting node must be aN1 or aN2
6420 aN1isOK = ( aN1 && aN1 == theN1 );
6421 aN2isOK = ( aN2 && aN2 == theN1 );
6424 // we have specified ending vertex of the previous edge on the previous iteration
6425 // and we have just to check that it corresponds to any vertex in current segment
6426 aN1isOK = aVprev.IsSame( aV1 );
6427 aN2isOK = aVprev.IsSame( aV2 );
6429 if ( !aN1isOK && !aN2isOK ) continue;
6430 // 2. Collect parameters on the track edge
6432 aItN = locMeshDS->GetNodes();
6433 while ( aItN->more() ) {
6434 const SMDS_MeshNode* pNode = aItN->next();
6435 const SMDS_EdgePosition* pEPos =
6436 static_cast<const SMDS_EdgePosition*>( pNode->GetPosition() );
6437 double aT = pEPos->GetUParameter();
6438 aPrms.push_back( aT );
6440 list<SMESH_MeshEditor_PathPoint> LPP;
6441 //Extrusion_Error err =
6442 MakeEdgePathPoints(aPrms, aTrackEdge, aN1isOK, LPP);
6443 LLPPs.push_back(LPP);
6445 // update startN for search following egde
6446 if ( aN1isOK ) aVprev = aV2;
6451 list< list<SMESH_MeshEditor_PathPoint> >::iterator itLLPP = LLPPs.begin();
6452 list<SMESH_MeshEditor_PathPoint>& firstList = *itLLPP;
6453 fullList.splice( fullList.end(), firstList );
6455 SMESH_MeshEditor_PathPoint PP1 = fullList.back();
6456 fullList.pop_back();
6458 for(; itLLPP!=LLPPs.end(); itLLPP++) {
6459 list<SMESH_MeshEditor_PathPoint>& currList = *itLLPP;
6460 SMESH_MeshEditor_PathPoint PP2 = currList.front();
6461 gp_Dir D1 = PP1.Tangent();
6462 gp_Dir D2 = PP2.Tangent();
6463 gp_Dir Dnew( D1.XYZ() + D2.XYZ() );
6464 PP1.SetTangent(Dnew);
6465 fullList.push_back(PP1);
6466 fullList.splice( fullList.end(), currList, ++currList.begin(), currList.end() );
6467 PP1 = fullList.back();
6468 fullList.pop_back();
6470 // if wire not closed
6471 fullList.push_back(PP1);
6475 return EXTR_BAD_PATH_SHAPE;
6478 return MakeExtrElements(theElements, fullList, theHasAngles, theAngles, theLinearVariation,
6479 theHasRefPoint, theRefPoint, theMakeGroups);
6483 //=======================================================================
6484 //function : MakeEdgePathPoints
6485 //purpose : auxiliary for ExtrusionAlongTrack
6486 //=======================================================================
6487 SMESH_MeshEditor::Extrusion_Error
6488 SMESH_MeshEditor::MakeEdgePathPoints(std::list<double>& aPrms,
6489 const TopoDS_Edge& aTrackEdge,
6491 list<SMESH_MeshEditor_PathPoint>& LPP)
6493 Standard_Real aTx1, aTx2, aL2, aTolVec, aTolVec2;
6495 aTolVec2=aTolVec*aTolVec;
6497 TopoDS_Vertex aV1, aV2;
6498 TopExp::Vertices( aTrackEdge, aV1, aV2 );
6499 aT1=BRep_Tool::Parameter( aV1, aTrackEdge );
6500 aT2=BRep_Tool::Parameter( aV2, aTrackEdge );
6501 // 2. Collect parameters on the track edge
6502 aPrms.push_front( aT1 );
6503 aPrms.push_back( aT2 );
6506 if( FirstIsStart ) {
6517 SMESH_MeshEditor_PathPoint aPP;
6518 Handle(Geom_Curve) aC3D = BRep_Tool::Curve( aTrackEdge, aTx1, aTx2 );
6519 std::list<double>::iterator aItD = aPrms.begin();
6520 for(; aItD != aPrms.end(); ++aItD) {
6524 aC3D->D1( aT, aP3D, aVec );
6525 aL2 = aVec.SquareMagnitude();
6526 if ( aL2 < aTolVec2 )
6527 return EXTR_CANT_GET_TANGENT;
6528 gp_Dir aTgt( FirstIsStart ? aVec : -aVec );
6530 aPP.SetTangent( aTgt );
6531 aPP.SetParameter( aT );
6538 //=======================================================================
6539 //function : MakeExtrElements
6540 //purpose : auxiliary for ExtrusionAlongTrack
6541 //=======================================================================
6542 SMESH_MeshEditor::Extrusion_Error
6543 SMESH_MeshEditor::MakeExtrElements(TIDSortedElemSet theElemSets[2],
6544 list<SMESH_MeshEditor_PathPoint>& fullList,
6545 const bool theHasAngles,
6546 list<double>& theAngles,
6547 const bool theLinearVariation,
6548 const bool theHasRefPoint,
6549 const gp_Pnt& theRefPoint,
6550 const bool theMakeGroups)
6552 const int aNbTP = fullList.size();
6555 if( theHasAngles && !theAngles.empty() && theLinearVariation )
6556 LinearAngleVariation(aNbTP-1, theAngles);
6558 // fill vector of path points with angles
6559 vector<SMESH_MeshEditor_PathPoint> aPPs;
6560 list<SMESH_MeshEditor_PathPoint>::iterator itPP = fullList.begin();
6561 list<double>::iterator itAngles = theAngles.begin();
6562 aPPs.push_back( *itPP++ );
6563 for( ; itPP != fullList.end(); itPP++) {
6564 aPPs.push_back( *itPP );
6565 if ( theHasAngles && itAngles != theAngles.end() )
6566 aPPs.back().SetAngle( *itAngles++ );
6569 TNodeOfNodeListMap mapNewNodes;
6570 TElemOfVecOfNnlmiMap mapElemNewNodes;
6571 TTElemOfElemListMap newElemsMap;
6572 TIDSortedElemSet::iterator itElem;
6573 // source elements for each generated one
6574 SMESH_SequenceOfElemPtr srcElems, srcNodes;
6576 // 3. Center of rotation aV0
6577 gp_Pnt aV0 = theRefPoint;
6578 if ( !theHasRefPoint )
6580 gp_XYZ aGC( 0.,0.,0. );
6581 TIDSortedElemSet newNodes;
6583 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
6585 TIDSortedElemSet& theElements = theElemSets[ is2ndSet ];
6586 itElem = theElements.begin();
6587 for ( ; itElem != theElements.end(); itElem++ )
6589 const SMDS_MeshElement* elem = *itElem;
6590 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6591 while ( itN->more() ) {
6592 const SMDS_MeshElement* node = itN->next();
6593 if ( newNodes.insert( node ).second )
6594 aGC += SMESH_TNodeXYZ( node );
6598 aGC /= newNodes.size();
6600 } // if (!theHasRefPoint) {
6602 // 4. Processing the elements
6603 SMESHDS_Mesh* aMesh = GetMeshDS();
6604 list<const SMDS_MeshNode*> emptyList;
6606 setElemsFirst( theElemSets );
6607 for ( int is2ndSet = 0; is2ndSet < 2; ++is2ndSet )
6609 TIDSortedElemSet& theElements = theElemSets[ is2ndSet ];
6610 for ( itElem = theElements.begin(); itElem != theElements.end(); itElem++ )
6612 const SMDS_MeshElement* elem = *itElem;
6614 vector<TNodeOfNodeListMapItr> & newNodesItVec = mapElemNewNodes[ elem ];
6615 newNodesItVec.reserve( elem->NbNodes() );
6617 // loop on elem nodes
6619 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6620 while ( itN->more() )
6623 // check if a node has been already processed
6624 const SMDS_MeshNode* node = cast2Node( itN->next() );
6625 TNodeOfNodeListMap::iterator nIt = mapNewNodes.insert( make_pair( node, emptyList )).first;
6626 list<const SMDS_MeshNode*>& listNewNodes = nIt->second;
6627 if ( listNewNodes.empty() )
6630 Standard_Real aAngle1x, aAngleT1T0, aTolAng;
6631 gp_Pnt aP0x, aP1x, aPN0, aPN1, aV0x, aV1x;
6632 gp_Ax1 anAx1, anAxT1T0;
6633 gp_Dir aDT1x, aDT0x, aDT1T0;
6638 aPN0 = SMESH_TNodeXYZ( node );
6640 const SMESH_MeshEditor_PathPoint& aPP0 = aPPs[0];
6642 aDT0x= aPP0.Tangent();
6644 for ( int j = 1; j < aNbTP; ++j ) {
6645 const SMESH_MeshEditor_PathPoint& aPP1 = aPPs[j];
6647 aDT1x = aPP1.Tangent();
6648 aAngle1x = aPP1.Angle();
6650 gp_Trsf aTrsf, aTrsfRot, aTrsfRotT1T0;
6652 gp_Vec aV01x( aP0x, aP1x );
6653 aTrsf.SetTranslation( aV01x );
6656 aV1x = aV0x.Transformed( aTrsf );
6657 aPN1 = aPN0.Transformed( aTrsf );
6659 // rotation 1 [ T1,T0 ]
6660 aAngleT1T0=-aDT1x.Angle( aDT0x );
6661 if (fabs(aAngleT1T0) > aTolAng)
6664 anAxT1T0.SetLocation( aV1x );
6665 anAxT1T0.SetDirection( aDT1T0 );
6666 aTrsfRotT1T0.SetRotation( anAxT1T0, aAngleT1T0 );
6668 aPN1 = aPN1.Transformed( aTrsfRotT1T0 );
6672 if ( theHasAngles ) {
6673 anAx1.SetLocation( aV1x );
6674 anAx1.SetDirection( aDT1x );
6675 aTrsfRot.SetRotation( anAx1, aAngle1x );
6677 aPN1 = aPN1.Transformed( aTrsfRot );
6681 if ( elem->IsQuadratic() && !elem->IsMediumNode(node) )
6683 // create additional node
6684 gp_XYZ midP = 0.5 * ( aPN1.XYZ() + aPN0.XYZ() );
6685 const SMDS_MeshNode* newNode = aMesh->AddNode( midP.X(), midP.Y(), midP.Z() );
6686 myLastCreatedNodes.Append(newNode);
6687 srcNodes.Append( node );
6688 listNewNodes.push_back( newNode );
6690 const SMDS_MeshNode* newNode = aMesh->AddNode( aPN1.X(), aPN1.Y(), aPN1.Z() );
6691 myLastCreatedNodes.Append(newNode);
6692 srcNodes.Append( node );
6693 listNewNodes.push_back( newNode );
6701 else if( elem->IsQuadratic() && !elem->IsMediumNode(node) )
6703 // if current elem is quadratic and current node is not medium
6704 // we have to check - may be it is needed to insert additional nodes
6705 list< const SMDS_MeshNode* > & listNewNodes = nIt->second;
6706 if ((int) listNewNodes.size() == aNbTP-1 )
6708 vector<const SMDS_MeshNode*> aNodes(2*(aNbTP-1));
6709 gp_XYZ P(node->X(), node->Y(), node->Z());
6710 list< const SMDS_MeshNode* >::iterator it = listNewNodes.begin();
6712 for(i=0; i<aNbTP-1; i++) {
6713 const SMDS_MeshNode* N = *it;
6714 double x = ( N->X() + P.X() )/2.;
6715 double y = ( N->Y() + P.Y() )/2.;
6716 double z = ( N->Z() + P.Z() )/2.;
6717 const SMDS_MeshNode* newN = aMesh->AddNode(x,y,z);
6718 srcNodes.Append( node );
6719 myLastCreatedNodes.Append(newN);
6722 P = gp_XYZ(N->X(),N->Y(),N->Z());
6724 listNewNodes.clear();
6725 for(i=0; i<2*(aNbTP-1); i++) {
6726 listNewNodes.push_back(aNodes[i]);
6731 newNodesItVec.push_back( nIt );
6734 // make new elements
6735 sweepElement( elem, newNodesItVec, newElemsMap[elem], aNbTP-1, srcElems );
6739 makeWalls( mapNewNodes, newElemsMap, mapElemNewNodes, theElemSets[0], aNbTP-1, srcElems );
6741 if ( theMakeGroups )
6742 generateGroups( srcNodes, srcElems, "extruded");
6748 //=======================================================================
6749 //function : LinearAngleVariation
6750 //purpose : spread values over nbSteps
6751 //=======================================================================
6753 void SMESH_MeshEditor::LinearAngleVariation(const int nbSteps,
6754 list<double>& Angles)
6756 int nbAngles = Angles.size();
6757 if( nbSteps > nbAngles && nbAngles > 0 )
6759 vector<double> theAngles(nbAngles);
6760 theAngles.assign( Angles.begin(), Angles.end() );
6763 double rAn2St = double( nbAngles ) / double( nbSteps );
6764 double angPrev = 0, angle;
6765 for ( int iSt = 0; iSt < nbSteps; ++iSt )
6767 double angCur = rAn2St * ( iSt+1 );
6768 double angCurFloor = floor( angCur );
6769 double angPrevFloor = floor( angPrev );
6770 if ( angPrevFloor == angCurFloor )
6771 angle = rAn2St * theAngles[ int( angCurFloor ) ];
6773 int iP = int( angPrevFloor );
6774 double angPrevCeil = ceil(angPrev);
6775 angle = ( angPrevCeil - angPrev ) * theAngles[ iP ];
6777 int iC = int( angCurFloor );
6778 if ( iC < nbAngles )
6779 angle += ( angCur - angCurFloor ) * theAngles[ iC ];
6781 iP = int( angPrevCeil );
6783 angle += theAngles[ iC ];
6785 res.push_back(angle);
6793 //================================================================================
6795 * \brief Move or copy theElements applying theTrsf to their nodes
6796 * \param theElems - elements to transform, if theElems is empty then apply to all mesh nodes
6797 * \param theTrsf - transformation to apply
6798 * \param theCopy - if true, create translated copies of theElems
6799 * \param theMakeGroups - if true and theCopy, create translated groups
6800 * \param theTargetMesh - mesh to copy translated elements into
6801 * \return SMESH_MeshEditor::PGroupIDs - list of ids of created groups
6803 //================================================================================
6805 SMESH_MeshEditor::PGroupIDs
6806 SMESH_MeshEditor::Transform (TIDSortedElemSet & theElems,
6807 const gp_Trsf& theTrsf,
6809 const bool theMakeGroups,
6810 SMESH_Mesh* theTargetMesh)
6812 myLastCreatedElems.Clear();
6813 myLastCreatedNodes.Clear();
6815 bool needReverse = false;
6816 string groupPostfix;
6817 switch ( theTrsf.Form() ) {
6820 groupPostfix = "mirrored";
6823 groupPostfix = "mirrored";
6827 groupPostfix = "mirrored";
6830 groupPostfix = "rotated";
6832 case gp_Translation:
6833 groupPostfix = "translated";
6836 groupPostfix = "scaled";
6838 case gp_CompoundTrsf: // different scale by axis
6839 groupPostfix = "scaled";
6842 needReverse = false;
6843 groupPostfix = "transformed";
6846 SMESHDS_Mesh* aTgtMesh = theTargetMesh ? theTargetMesh->GetMeshDS() : 0;
6847 SMESHDS_Mesh* aMesh = GetMeshDS();
6849 SMESH_MeshEditor targetMeshEditor( theTargetMesh );
6850 SMESH_MeshEditor* editor = theTargetMesh ? & targetMeshEditor : theCopy ? this : 0;
6851 SMESH_MeshEditor::ElemFeatures elemType;
6853 // map old node to new one
6854 TNodeNodeMap nodeMap;
6856 // elements sharing moved nodes; those of them which have all
6857 // nodes mirrored but are not in theElems are to be reversed
6858 TIDSortedElemSet inverseElemSet;
6860 // source elements for each generated one
6861 SMESH_SequenceOfElemPtr srcElems, srcNodes;
6863 // issue 021015: EDF 1578 SMESH: Free nodes are removed when translating a mesh
6864 TIDSortedElemSet orphanNode;
6866 if ( theElems.empty() ) // transform the whole mesh
6869 SMDS_ElemIteratorPtr eIt = aMesh->elementsIterator();
6870 while ( eIt->more() ) theElems.insert( eIt->next() );
6872 SMDS_NodeIteratorPtr nIt = aMesh->nodesIterator();
6873 while ( nIt->more() )
6875 const SMDS_MeshNode* node = nIt->next();
6876 if ( node->NbInverseElements() == 0)
6877 orphanNode.insert( node );
6881 // loop on elements to transform nodes : first orphan nodes then elems
6882 TIDSortedElemSet::iterator itElem;
6883 TIDSortedElemSet *elements[] = { &orphanNode, &theElems };
6884 for (int i=0; i<2; i++)
6885 for ( itElem = elements[i]->begin(); itElem != elements[i]->end(); itElem++ )
6887 const SMDS_MeshElement* elem = *itElem;
6891 // loop on elem nodes
6893 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6894 while ( itN->more() )
6896 const SMDS_MeshNode* node = cast2Node( itN->next() );
6897 // check if a node has been already transformed
6898 pair<TNodeNodeMap::iterator,bool> n2n_isnew =
6899 nodeMap.insert( make_pair ( node, node ));
6900 if ( !n2n_isnew.second )
6903 node->GetXYZ( coord );
6904 theTrsf.Transforms( coord[0], coord[1], coord[2] );
6905 if ( theTargetMesh ) {
6906 const SMDS_MeshNode * newNode = aTgtMesh->AddNode( coord[0], coord[1], coord[2] );
6907 n2n_isnew.first->second = newNode;
6908 myLastCreatedNodes.Append(newNode);
6909 srcNodes.Append( node );
6911 else if ( theCopy ) {
6912 const SMDS_MeshNode * newNode = aMesh->AddNode( coord[0], coord[1], coord[2] );
6913 n2n_isnew.first->second = newNode;
6914 myLastCreatedNodes.Append(newNode);
6915 srcNodes.Append( node );
6918 aMesh->MoveNode( node, coord[0], coord[1], coord[2] );
6919 // node position on shape becomes invalid
6920 const_cast< SMDS_MeshNode* > ( node )->SetPosition
6921 ( SMDS_SpacePosition::originSpacePosition() );
6924 // keep inverse elements
6925 if ( !theCopy && !theTargetMesh && needReverse ) {
6926 SMDS_ElemIteratorPtr invElemIt = node->GetInverseElementIterator();
6927 while ( invElemIt->more() ) {
6928 const SMDS_MeshElement* iel = invElemIt->next();
6929 inverseElemSet.insert( iel );
6933 } // loop on elems in { &orphanNode, &theElems };
6935 // either create new elements or reverse mirrored ones
6936 if ( !theCopy && !needReverse && !theTargetMesh )
6939 theElems.insert( inverseElemSet.begin(),inverseElemSet.end() );
6941 // Replicate or reverse elements
6943 std::vector<int> iForw;
6944 vector<const SMDS_MeshNode*> nodes;
6945 for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ )
6947 const SMDS_MeshElement* elem = *itElem;
6948 if ( !elem ) continue;
6950 SMDSAbs_GeometryType geomType = elem->GetGeomType();
6951 size_t nbNodes = elem->NbNodes();
6952 if ( geomType == SMDSGeom_NONE ) continue; // node
6954 nodes.resize( nbNodes );
6956 if ( geomType == SMDSGeom_POLYHEDRA ) // ------------------ polyhedral volume
6958 const SMDS_VtkVolume* aPolyedre = dynamic_cast<const SMDS_VtkVolume*>( elem );
6962 bool allTransformed = true;
6963 int nbFaces = aPolyedre->NbFaces();
6964 for (int iface = 1; iface <= nbFaces && allTransformed; iface++)
6966 int nbFaceNodes = aPolyedre->NbFaceNodes(iface);
6967 for (int inode = 1; inode <= nbFaceNodes && allTransformed; inode++)
6969 const SMDS_MeshNode* node = aPolyedre->GetFaceNode(iface, inode);
6970 TNodeNodeMap::iterator nodeMapIt = nodeMap.find(node);
6971 if ( nodeMapIt == nodeMap.end() )
6972 allTransformed = false; // not all nodes transformed
6974 nodes.push_back((*nodeMapIt).second);
6976 if ( needReverse && allTransformed )
6977 std::reverse( nodes.end() - nbFaceNodes, nodes.end() );
6979 if ( !allTransformed )
6980 continue; // not all nodes transformed
6982 else // ----------------------- the rest element types
6984 while ( iForw.size() < nbNodes ) iForw.push_back( iForw.size() );
6985 const vector<int>& iRev = SMDS_MeshCell::reverseSmdsOrder( elem->GetEntityType(), nbNodes );
6986 const vector<int>& i = needReverse ? iRev : iForw;
6988 // find transformed nodes
6990 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
6991 while ( itN->more() ) {
6992 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( itN->next() );
6993 TNodeNodeMap::iterator nodeMapIt = nodeMap.find( node );
6994 if ( nodeMapIt == nodeMap.end() )
6995 break; // not all nodes transformed
6996 nodes[ i [ iNode++ ]] = (*nodeMapIt).second;
6998 if ( iNode != nbNodes )
6999 continue; // not all nodes transformed
7003 // copy in this or a new mesh
7004 if ( editor->AddElement( nodes, elemType.Init( elem, /*basicOnly=*/false )))
7005 srcElems.Append( elem );
7008 // reverse element as it was reversed by transformation
7010 aMesh->ChangeElementNodes( elem, &nodes[0], nbNodes );
7013 } // loop on elements
7015 if ( editor && editor != this )
7016 myLastCreatedElems = editor->myLastCreatedElems;
7018 PGroupIDs newGroupIDs;
7020 if ( ( theMakeGroups && theCopy ) ||
7021 ( theMakeGroups && theTargetMesh ) )
7022 newGroupIDs = generateGroups( srcNodes, srcElems, groupPostfix, theTargetMesh, false );
7027 //=======================================================================
7029 * \brief Create groups of elements made during transformation
7030 * \param nodeGens - nodes making corresponding myLastCreatedNodes
7031 * \param elemGens - elements making corresponding myLastCreatedElems
7032 * \param postfix - to append to names of new groups
7033 * \param targetMesh - mesh to create groups in
7034 * \param topPresent - is there "top" elements that are created by sweeping
7036 //=======================================================================
7038 SMESH_MeshEditor::PGroupIDs
7039 SMESH_MeshEditor::generateGroups(const SMESH_SequenceOfElemPtr& nodeGens,
7040 const SMESH_SequenceOfElemPtr& elemGens,
7041 const std::string& postfix,
7042 SMESH_Mesh* targetMesh,
7043 const bool topPresent)
7045 PGroupIDs newGroupIDs( new list<int> );
7046 SMESH_Mesh* mesh = targetMesh ? targetMesh : GetMesh();
7048 // Sort existing groups by types and collect their names
7050 // containers to store an old group and generated new ones;
7051 // 1st new group is for result elems of different type than a source one;
7052 // 2nd new group is for same type result elems ("top" group at extrusion)
7054 using boost::make_tuple;
7055 typedef tuple< SMESHDS_GroupBase*, SMESHDS_Group*, SMESHDS_Group* > TOldNewGroup;
7056 vector< list< TOldNewGroup > > groupsByType( SMDSAbs_NbElementTypes );
7057 vector< TOldNewGroup* > orderedOldNewGroups; // in order of old groups
7059 set< string > groupNames;
7061 SMESH_Mesh::GroupIteratorPtr groupIt = GetMesh()->GetGroups();
7062 if ( !groupIt->more() ) return newGroupIDs;
7064 int newGroupID = mesh->GetGroupIds().back()+1;
7065 while ( groupIt->more() )
7067 SMESH_Group * group = groupIt->next();
7068 if ( !group ) continue;
7069 SMESHDS_GroupBase* groupDS = group->GetGroupDS();
7070 if ( !groupDS || groupDS->IsEmpty() ) continue;
7071 groupNames.insert ( group->GetName() );
7072 groupDS->SetStoreName( group->GetName() );
7073 const SMDSAbs_ElementType type = groupDS->GetType();
7074 SMESHDS_Group* newGroup = new SMESHDS_Group( newGroupID++, mesh->GetMeshDS(), type );
7075 SMESHDS_Group* newTopGroup = new SMESHDS_Group( newGroupID++, mesh->GetMeshDS(), type );
7076 groupsByType[ type ].push_back( make_tuple( groupDS, newGroup, newTopGroup ));
7077 orderedOldNewGroups.push_back( & groupsByType[ type ].back() );
7080 // Loop on nodes and elements to add them in new groups
7082 vector< const SMDS_MeshElement* > resultElems;
7083 for ( int isNodes = 0; isNodes < 2; ++isNodes )
7085 const SMESH_SequenceOfElemPtr& gens = isNodes ? nodeGens : elemGens;
7086 const SMESH_SequenceOfElemPtr& elems = isNodes ? myLastCreatedNodes : myLastCreatedElems;
7087 if ( gens.Length() != elems.Length() )
7088 throw SALOME_Exception("SMESH_MeshEditor::generateGroups(): invalid args");
7090 // loop on created elements
7091 for (int iElem = 1; iElem <= elems.Length(); ++iElem )
7093 const SMDS_MeshElement* sourceElem = gens( iElem );
7094 if ( !sourceElem ) {
7095 MESSAGE("generateGroups(): NULL source element");
7098 list< TOldNewGroup > & groupsOldNew = groupsByType[ sourceElem->GetType() ];
7099 if ( groupsOldNew.empty() ) { // no groups of this type at all
7100 while ( iElem < gens.Length() && gens( iElem+1 ) == sourceElem )
7101 ++iElem; // skip all elements made by sourceElem
7104 // collect all elements made by the iElem-th sourceElem
7105 resultElems.clear();
7106 if ( const SMDS_MeshElement* resElem = elems( iElem ))
7107 if ( resElem != sourceElem )
7108 resultElems.push_back( resElem );
7109 while ( iElem < gens.Length() && gens( iElem+1 ) == sourceElem )
7110 if ( const SMDS_MeshElement* resElem = elems( ++iElem ))
7111 if ( resElem != sourceElem )
7112 resultElems.push_back( resElem );
7114 const SMDS_MeshElement* topElem = 0;
7115 if ( isNodes ) // there must be a top element
7117 topElem = resultElems.back();
7118 resultElems.pop_back();
7122 vector< const SMDS_MeshElement* >::reverse_iterator resElemIt = resultElems.rbegin();
7123 for ( ; resElemIt != resultElems.rend() ; ++resElemIt )
7124 if ( (*resElemIt)->GetType() == sourceElem->GetType() )
7126 topElem = *resElemIt;
7127 *resElemIt = 0; // erase *resElemIt
7131 // add resultElems to groups originted from ones the sourceElem belongs to
7132 list< TOldNewGroup >::iterator gOldNew, gLast = groupsOldNew.end();
7133 for ( gOldNew = groupsOldNew.begin(); gOldNew != gLast; ++gOldNew )
7135 SMESHDS_GroupBase* oldGroup = gOldNew->get<0>();
7136 if ( oldGroup->Contains( sourceElem )) // sourceElem is in oldGroup
7138 // fill in a new group
7139 SMDS_MeshGroup & newGroup = gOldNew->get<1>()->SMDSGroup();
7140 vector< const SMDS_MeshElement* >::iterator resLast = resultElems.end(), resElemIt;
7141 for ( resElemIt = resultElems.begin(); resElemIt != resLast; ++resElemIt )
7143 newGroup.Add( *resElemIt );
7145 // fill a "top" group
7148 SMDS_MeshGroup & newTopGroup = gOldNew->get<2>()->SMDSGroup();
7149 newTopGroup.Add( topElem );
7153 } // loop on created elements
7154 }// loop on nodes and elements
7156 // Create new SMESH_Groups from SMESHDS_Groups and remove empty SMESHDS_Groups
7158 list<int> topGrouIds;
7159 for ( size_t i = 0; i < orderedOldNewGroups.size(); ++i )
7161 SMESHDS_GroupBase* oldGroupDS = orderedOldNewGroups[i]->get<0>();
7162 SMESHDS_Group* newGroups[2] = { orderedOldNewGroups[i]->get<1>(),
7163 orderedOldNewGroups[i]->get<2>() };
7164 for ( int is2nd = 0; is2nd < 2; ++is2nd )
7166 SMESHDS_Group* newGroupDS = newGroups[ is2nd ];
7167 if ( newGroupDS->IsEmpty() )
7169 mesh->GetMeshDS()->RemoveGroup( newGroupDS );
7174 newGroupDS->SetType( newGroupDS->GetElements()->next()->GetType() );
7177 const bool isTop = ( topPresent &&
7178 newGroupDS->GetType() == oldGroupDS->GetType() &&
7181 string name = oldGroupDS->GetStoreName();
7182 { // remove trailing whitespaces (issue 22599)
7183 size_t size = name.size();
7184 while ( size > 1 && isspace( name[ size-1 ]))
7186 if ( size != name.size() )
7188 name.resize( size );
7189 oldGroupDS->SetStoreName( name.c_str() );
7192 if ( !targetMesh ) {
7193 string suffix = ( isTop ? "top": postfix.c_str() );
7197 while ( !groupNames.insert( name ).second ) // name exists
7198 name = SMESH_Comment( oldGroupDS->GetStoreName() ) << "_" << suffix << "_" << nb++;
7203 newGroupDS->SetStoreName( name.c_str() );
7205 // make a SMESH_Groups
7206 mesh->AddGroup( newGroupDS );
7208 topGrouIds.push_back( newGroupDS->GetID() );
7210 newGroupIDs->push_back( newGroupDS->GetID() );
7214 newGroupIDs->splice( newGroupIDs->end(), topGrouIds );
7219 //================================================================================
7221 * * \brief Return list of group of nodes close to each other within theTolerance
7222 * * Search among theNodes or in the whole mesh if theNodes is empty using
7223 * * an Octree algorithm
7224 * \param [in,out] theNodes - the nodes to treat
7225 * \param [in] theTolerance - the tolerance
7226 * \param [out] theGroupsOfNodes - the result groups of coincident nodes
7227 * \param [in] theSeparateCornersAndMedium - if \c true, in quadratic mesh puts
7228 * corner and medium nodes in separate groups
7230 //================================================================================
7232 void SMESH_MeshEditor::FindCoincidentNodes (TIDSortedNodeSet & theNodes,
7233 const double theTolerance,
7234 TListOfListOfNodes & theGroupsOfNodes,
7235 bool theSeparateCornersAndMedium)
7237 myLastCreatedElems.Clear();
7238 myLastCreatedNodes.Clear();
7240 if ( myMesh->NbEdges ( ORDER_QUADRATIC ) +
7241 myMesh->NbFaces ( ORDER_QUADRATIC ) +
7242 myMesh->NbVolumes( ORDER_QUADRATIC ) == 0 )
7243 theSeparateCornersAndMedium = false;
7245 TIDSortedNodeSet& corners = theNodes;
7246 TIDSortedNodeSet medium;
7248 if ( theNodes.empty() ) // get all nodes in the mesh
7250 TIDSortedNodeSet* nodes[2] = { &corners, &medium };
7251 SMDS_NodeIteratorPtr nIt = GetMeshDS()->nodesIterator(/*idInceasingOrder=*/true);
7252 if ( theSeparateCornersAndMedium )
7253 while ( nIt->more() )
7255 const SMDS_MeshNode* n = nIt->next();
7256 TIDSortedNodeSet* & nodeSet = nodes[ SMESH_MesherHelper::IsMedium( n )];
7257 nodeSet->insert( nodeSet->end(), n );
7260 while ( nIt->more() )
7261 theNodes.insert( theNodes.end(),nIt->next() );
7263 else if ( theSeparateCornersAndMedium ) // separate corners from medium nodes
7265 TIDSortedNodeSet::iterator nIt = corners.begin();
7266 while ( nIt != corners.end() )
7267 if ( SMESH_MesherHelper::IsMedium( *nIt ))
7269 medium.insert( medium.end(), *nIt );
7270 corners.erase( nIt++ );
7278 if ( !corners.empty() )
7279 SMESH_OctreeNode::FindCoincidentNodes ( corners, &theGroupsOfNodes, theTolerance );
7280 if ( !medium.empty() )
7281 SMESH_OctreeNode::FindCoincidentNodes ( medium, &theGroupsOfNodes, theTolerance );
7284 //=======================================================================
7285 //function : SimplifyFace
7286 //purpose : split a chain of nodes into several closed chains
7287 //=======================================================================
7289 int SMESH_MeshEditor::SimplifyFace (const vector<const SMDS_MeshNode *>& faceNodes,
7290 vector<const SMDS_MeshNode *>& poly_nodes,
7291 vector<int>& quantities) const
7293 int nbNodes = faceNodes.size();
7294 while ( faceNodes[ 0 ] == faceNodes[ nbNodes-1 ] && nbNodes > 2 )
7298 size_t prevNbQuant = quantities.size();
7300 vector< const SMDS_MeshNode* > simpleNodes; simpleNodes.reserve( nbNodes );
7301 map< const SMDS_MeshNode*, int > nodeIndices; // indices within simpleNodes
7302 map< const SMDS_MeshNode*, int >::iterator nInd;
7304 nodeIndices.insert( make_pair( faceNodes[0], 0 ));
7305 simpleNodes.push_back( faceNodes[0] );
7306 for ( int iCur = 1; iCur < nbNodes; iCur++ )
7308 if ( faceNodes[ iCur ] != simpleNodes.back() )
7310 int index = simpleNodes.size();
7311 nInd = nodeIndices.insert( make_pair( faceNodes[ iCur ], index )).first;
7312 int prevIndex = nInd->second;
7313 if ( prevIndex < index )
7316 int loopLen = index - prevIndex;
7319 // store the sub-loop
7320 quantities.push_back( loopLen );
7321 for ( int i = prevIndex; i < index; i++ )
7322 poly_nodes.push_back( simpleNodes[ i ]);
7324 simpleNodes.resize( prevIndex+1 );
7328 simpleNodes.push_back( faceNodes[ iCur ]);
7333 if ( simpleNodes.size() > 2 )
7335 quantities.push_back( simpleNodes.size() );
7336 poly_nodes.insert ( poly_nodes.end(), simpleNodes.begin(), simpleNodes.end() );
7339 return quantities.size() - prevNbQuant;
7342 //=======================================================================
7343 //function : MergeNodes
7344 //purpose : In each group, the cdr of nodes are substituted by the first one
7346 //=======================================================================
7348 void SMESH_MeshEditor::MergeNodes (TListOfListOfNodes & theGroupsOfNodes,
7349 const bool theAvoidMakingHoles)
7351 myLastCreatedElems.Clear();
7352 myLastCreatedNodes.Clear();
7354 SMESHDS_Mesh* aMesh = GetMeshDS();
7356 TNodeNodeMap nodeNodeMap; // node to replace - new node
7357 set<const SMDS_MeshElement*> elems; // all elements with changed nodes
7358 list< int > rmElemIds, rmNodeIds;
7360 // Fill nodeNodeMap and elems
7362 TListOfListOfNodes::iterator grIt = theGroupsOfNodes.begin();
7363 for ( ; grIt != theGroupsOfNodes.end(); grIt++ )
7365 list<const SMDS_MeshNode*>& nodes = *grIt;
7366 list<const SMDS_MeshNode*>::iterator nIt = nodes.begin();
7367 const SMDS_MeshNode* nToKeep = *nIt;
7368 for ( ++nIt; nIt != nodes.end(); nIt++ )
7370 const SMDS_MeshNode* nToRemove = *nIt;
7371 nodeNodeMap.insert( make_pair( nToRemove, nToKeep ));
7372 if ( nToRemove != nToKeep )
7374 rmNodeIds.push_back( nToRemove->GetID() );
7375 AddToSameGroups( nToKeep, nToRemove, aMesh );
7376 // set _alwaysComputed to a sub-mesh of VERTEX to enable mesh computing
7377 // after MergeNodes() w/o creating node in place of merged ones.
7378 const SMDS_PositionPtr& pos = nToRemove->GetPosition();
7379 if ( pos && pos->GetTypeOfPosition() == SMDS_TOP_VERTEX )
7380 if ( SMESH_subMesh* sm = myMesh->GetSubMeshContaining( nToRemove->getshapeId() ))
7381 sm->SetIsAlwaysComputed( true );
7383 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
7384 while ( invElemIt->more() ) {
7385 const SMDS_MeshElement* elem = invElemIt->next();
7390 // Change element nodes or remove an element
7392 set<const SMDS_MeshNode*> nodeSet;
7393 vector< const SMDS_MeshNode*> curNodes, uniqueNodes;
7395 ElemFeatures elemType;
7397 set<const SMDS_MeshElement*>::iterator eIt = elems.begin();
7398 for ( ; eIt != elems.end(); eIt++ )
7400 const SMDS_MeshElement* elem = *eIt;
7401 const int nbNodes = elem->NbNodes();
7402 const int aShapeId = FindShape( elem );
7403 SMDSAbs_EntityType entity = elem->GetEntityType();
7406 curNodes.resize( nbNodes );
7407 uniqueNodes.resize( nbNodes );
7408 iRepl.resize( nbNodes );
7409 int iUnique = 0, iCur = 0, nbRepl = 0;
7411 // get new seq of nodes
7412 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
7413 while ( itN->more() )
7415 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( itN->next() );
7417 TNodeNodeMap::iterator nnIt = nodeNodeMap.find( n );
7418 if ( nnIt != nodeNodeMap.end() ) { // n sticks
7420 { ////////// BUG 0020185: begin
7421 bool stopRecur = false;
7422 set<const SMDS_MeshNode*> nodesRecur;
7423 nodesRecur.insert(n);
7424 while (!stopRecur) {
7425 TNodeNodeMap::iterator nnIt_i = nodeNodeMap.find( n );
7426 if ( nnIt_i != nodeNodeMap.end() ) { // n sticks
7427 n = (*nnIt_i).second;
7428 if (!nodesRecur.insert(n).second) {
7429 // error: recursive dependency
7436 } ////////// BUG 0020185: end
7438 curNodes[ iCur ] = n;
7439 bool isUnique = nodeSet.insert( n ).second;
7441 uniqueNodes[ iUnique++ ] = n;
7443 iRepl[ nbRepl++ ] = iCur;
7447 // Analyse element topology after replacement
7450 int nbUniqueNodes = nodeSet.size();
7451 if ( nbNodes != nbUniqueNodes ) // some nodes stick
7453 if ( elem->IsPoly() ) // Polygons and Polyhedral volumes
7455 if ( elem->GetType() == SMDSAbs_Face ) // Polygon
7457 elemType.Init( elem );
7458 const bool isQuad = elemType.myIsQuad;
7460 SMDS_MeshCell::applyInterlace // interlace medium and corner nodes
7461 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon, nbNodes ), curNodes );
7463 // a polygon can divide into several elements
7464 vector<const SMDS_MeshNode *> polygons_nodes;
7465 vector<int> quantities;
7466 int nbNew = SimplifyFace( curNodes, polygons_nodes, quantities );
7469 vector<const SMDS_MeshNode *> face_nodes;
7471 for (int iface = 0; iface < nbNew; iface++)
7473 int nbNewNodes = quantities[iface];
7474 face_nodes.assign( polygons_nodes.begin() + inode,
7475 polygons_nodes.begin() + inode + nbNewNodes );
7476 inode += nbNewNodes;
7477 if ( isQuad ) // check if a result elem is a valid quadratic polygon
7479 bool isValid = ( nbNewNodes % 2 == 0 );
7480 for ( int i = 0; i < nbNewNodes && isValid; ++i )
7481 isValid = ( elem->IsMediumNode( face_nodes[i]) == bool( i % 2 ));
7482 elemType.SetQuad( isValid );
7483 if ( isValid ) // put medium nodes after corners
7484 SMDS_MeshCell::applyInterlaceRev
7485 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon,
7486 nbNewNodes ), face_nodes );
7488 elemType.SetPoly(( nbNewNodes / ( elemType.myIsQuad + 1 ) > 4 ));
7490 SMDS_MeshElement* newElem = AddElement( face_nodes, elemType.SetID(-1));
7492 aMesh->SetMeshElementOnShape(newElem, aShapeId);
7495 rmElemIds.push_back(elem->GetID());
7499 else if ( elem->GetType() == SMDSAbs_Volume ) // Polyhedral volume
7501 if ( nbUniqueNodes < 4 ) {
7502 rmElemIds.push_back(elem->GetID());
7505 // each face has to be analyzed in order to check volume validity
7506 const SMDS_VtkVolume* aPolyedre = dynamic_cast<const SMDS_VtkVolume*>( elem );
7509 int nbFaces = aPolyedre->NbFaces();
7511 vector<const SMDS_MeshNode *> poly_nodes;
7512 vector<int> quantities;
7513 vector<const SMDS_MeshNode *> faceNodes;
7515 for (int iface = 1; iface <= nbFaces; iface++)
7517 int nbFaceNodes = aPolyedre->NbFaceNodes(iface);
7518 faceNodes.resize( nbFaceNodes );
7519 for (int inode = 1; inode <= nbFaceNodes; inode++)
7521 const SMDS_MeshNode * faceNode = aPolyedre->GetFaceNode(iface, inode);
7522 TNodeNodeMap::iterator nnIt = nodeNodeMap.find(faceNode);
7523 if ( nnIt != nodeNodeMap.end() ) // faceNode sticks
7524 faceNode = (*nnIt).second;
7525 faceNodes[inode - 1] = faceNode;
7527 SimplifyFace(faceNodes, poly_nodes, quantities);
7530 if ( quantities.size() > 3 ) {
7531 // TODO: remove coincident faces
7534 if ( quantities.size() > 3 )
7536 const SMDS_MeshElement* newElem =
7537 aMesh->AddPolyhedralVolume( poly_nodes, quantities );
7538 myLastCreatedElems.Append( newElem );
7539 if ( aShapeId && newElem )
7540 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7541 rmElemIds.push_back( elem->GetID() );
7545 rmElemIds.push_back( elem->GetID() );
7556 // TODO not all the possible cases are solved. Find something more generic?
7558 case SMDSEntity_Edge: //////// EDGE
7559 case SMDSEntity_Triangle: //// TRIANGLE
7560 case SMDSEntity_Quad_Triangle:
7561 case SMDSEntity_Tetra:
7562 case SMDSEntity_Quad_Tetra: // TETRAHEDRON
7567 case SMDSEntity_Quad_Edge:
7569 isOk = false; // to linear EDGE ???????
7572 case SMDSEntity_Quadrangle: //////////////////////////////////// QUADRANGLE
7574 if ( nbUniqueNodes < 3 )
7576 else if ( nbRepl == 1 && curNodes[ iRepl[0]] == curNodes[( iRepl[0]+2 )%4 ])
7577 isOk = false; // opposite nodes stick
7580 case SMDSEntity_Quad_Quadrangle: // Quadratic QUADRANGLE
7589 if (( nbUniqueNodes == 6 && nbRepl == 2 ) &&
7590 (( iRepl[0] == 1 && iRepl[1] == 4 && curNodes[1] == curNodes[0] ) ||
7591 ( iRepl[0] == 2 && iRepl[1] == 5 && curNodes[2] == curNodes[1] ) ||
7592 ( iRepl[0] == 3 && iRepl[1] == 6 && curNodes[3] == curNodes[2] ) ||
7593 ( iRepl[0] == 3 && iRepl[1] == 7 && curNodes[3] == curNodes[0] )))
7599 case SMDSEntity_BiQuad_Quadrangle: // Bi-Quadratic QUADRANGLE
7608 if (( nbUniqueNodes == 7 && nbRepl == 2 && iRepl[1] != 8 ) &&
7609 (( iRepl[0] == 1 && iRepl[1] == 4 && curNodes[1] == curNodes[0] ) ||
7610 ( iRepl[0] == 2 && iRepl[1] == 5 && curNodes[2] == curNodes[1] ) ||
7611 ( iRepl[0] == 3 && iRepl[1] == 6 && curNodes[3] == curNodes[2] ) ||
7612 ( iRepl[0] == 3 && iRepl[1] == 7 && curNodes[3] == curNodes[0] )))
7618 case SMDSEntity_Penta: ///////////////////////////////////// PENTAHEDRON
7621 if ( nbUniqueNodes == 4 ) {
7622 // ---------------------------------> tetrahedron
7623 if ( curNodes[3] == curNodes[4] &&
7624 curNodes[3] == curNodes[5] ) {
7628 else if ( curNodes[0] == curNodes[1] &&
7629 curNodes[0] == curNodes[2] ) {
7630 // bottom nodes stick: set a top before
7631 uniqueNodes[ 3 ] = uniqueNodes [ 0 ];
7632 uniqueNodes[ 0 ] = curNodes [ 5 ];
7633 uniqueNodes[ 1 ] = curNodes [ 4 ];
7634 uniqueNodes[ 2 ] = curNodes [ 3 ];
7637 else if (( curNodes[0] == curNodes[3] ) +
7638 ( curNodes[1] == curNodes[4] ) +
7639 ( curNodes[2] == curNodes[5] ) == 2 ) {
7640 // a lateral face turns into a line
7644 else if ( nbUniqueNodes == 5 ) {
7645 // PENTAHEDRON --------------------> pyramid
7646 if ( curNodes[0] == curNodes[3] )
7648 uniqueNodes[ 0 ] = curNodes[ 1 ];
7649 uniqueNodes[ 1 ] = curNodes[ 4 ];
7650 uniqueNodes[ 2 ] = curNodes[ 5 ];
7651 uniqueNodes[ 3 ] = curNodes[ 2 ];
7652 uniqueNodes[ 4 ] = curNodes[ 0 ];
7655 if ( curNodes[1] == curNodes[4] )
7657 uniqueNodes[ 0 ] = curNodes[ 0 ];
7658 uniqueNodes[ 1 ] = curNodes[ 2 ];
7659 uniqueNodes[ 2 ] = curNodes[ 5 ];
7660 uniqueNodes[ 3 ] = curNodes[ 3 ];
7661 uniqueNodes[ 4 ] = curNodes[ 1 ];
7664 if ( curNodes[2] == curNodes[5] )
7666 uniqueNodes[ 0 ] = curNodes[ 0 ];
7667 uniqueNodes[ 1 ] = curNodes[ 3 ];
7668 uniqueNodes[ 2 ] = curNodes[ 4 ];
7669 uniqueNodes[ 3 ] = curNodes[ 1 ];
7670 uniqueNodes[ 4 ] = curNodes[ 2 ];
7676 case SMDSEntity_Hexa:
7678 //////////////////////////////////// HEXAHEDRON
7680 SMDS_VolumeTool hexa (elem);
7681 hexa.SetExternalNormal();
7682 if ( nbUniqueNodes == 4 && nbRepl == 4 ) {
7683 //////////////////////// HEX ---> tetrahedron
7684 for ( int iFace = 0; iFace < 6; iFace++ ) {
7685 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7686 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7687 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7688 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7689 // one face turns into a point ...
7690 int pickInd = ind[ 0 ];
7691 int iOppFace = hexa.GetOppFaceIndex( iFace );
7692 ind = hexa.GetFaceNodesIndices( iOppFace );
7694 uniqueNodes.clear();
7695 for ( iCur = 0; iCur < 4 && nbStick < 2; iCur++ ) {
7696 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7699 uniqueNodes.push_back( curNodes[ind[ iCur ]]);
7701 if ( nbStick == 1 ) {
7702 // ... and the opposite one - into a triangle.
7704 uniqueNodes.push_back( curNodes[ pickInd ]);
7711 else if ( nbUniqueNodes == 6 && nbRepl == 2 ) {
7712 //////////////////////// HEX ---> prism
7713 int nbTria = 0, iTria[3];
7714 const int *ind; // indices of face nodes
7715 // look for triangular faces
7716 for ( int iFace = 0; iFace < 6 && nbTria < 3; iFace++ ) {
7717 ind = hexa.GetFaceNodesIndices( iFace );
7718 TIDSortedNodeSet faceNodes;
7719 for ( iCur = 0; iCur < 4; iCur++ )
7720 faceNodes.insert( curNodes[ind[iCur]] );
7721 if ( faceNodes.size() == 3 )
7722 iTria[ nbTria++ ] = iFace;
7724 // check if triangles are opposite
7725 if ( nbTria == 2 && iTria[0] == hexa.GetOppFaceIndex( iTria[1] ))
7727 // set nodes of the bottom triangle
7728 ind = hexa.GetFaceNodesIndices( iTria[ 0 ]);
7730 for ( iCur = 0; iCur < 4; iCur++ )
7731 if ( ind[iCur] != iRepl[0] && ind[iCur] != iRepl[1])
7732 indB.push_back( ind[iCur] );
7733 if ( !hexa.IsForward() )
7734 std::swap( indB[0], indB[2] );
7735 for ( iCur = 0; iCur < 3; iCur++ )
7736 uniqueNodes[ iCur ] = curNodes[indB[iCur]];
7737 // set nodes of the top triangle
7738 const int *indT = hexa.GetFaceNodesIndices( iTria[ 1 ]);
7739 for ( iCur = 0; iCur < 3; ++iCur )
7740 for ( int j = 0; j < 4; ++j )
7741 if ( hexa.IsLinked( indB[ iCur ], indT[ j ] ))
7743 uniqueNodes[ iCur + 3 ] = curNodes[ indT[ j ]];
7750 else if (nbUniqueNodes == 5 && nbRepl == 3 ) {
7751 //////////////////// HEXAHEDRON ---> pyramid
7752 for ( int iFace = 0; iFace < 6; iFace++ ) {
7753 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7754 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7755 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7756 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7757 // one face turns into a point ...
7758 int iOppFace = hexa.GetOppFaceIndex( iFace );
7759 ind = hexa.GetFaceNodesIndices( iOppFace );
7760 uniqueNodes.clear();
7761 for ( iCur = 0; iCur < 4; iCur++ ) {
7762 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7765 uniqueNodes.push_back( curNodes[ind[ iCur ]]);
7767 if ( uniqueNodes.size() == 4 ) {
7768 // ... and the opposite one is a quadrangle
7770 const int* indTop = hexa.GetFaceNodesIndices( iFace );
7771 uniqueNodes.push_back( curNodes[indTop[ 0 ]]);
7779 if ( !isOk && nbUniqueNodes > 4 ) {
7780 ////////////////// HEXAHEDRON ---> polyhedron
7781 hexa.SetExternalNormal();
7782 vector<const SMDS_MeshNode *> poly_nodes; poly_nodes.reserve( 6 * 4 );
7783 vector<int> quantities; quantities.reserve( 6 );
7784 for ( int iFace = 0; iFace < 6; iFace++ )
7786 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7787 if ( curNodes[ind[0]] == curNodes[ind[2]] ||
7788 curNodes[ind[1]] == curNodes[ind[3]] )
7791 break; // opposite nodes stick
7794 for ( iCur = 0; iCur < 4; iCur++ )
7796 if ( nodeSet.insert( curNodes[ind[ iCur ]] ).second )
7797 poly_nodes.push_back( curNodes[ind[ iCur ]]);
7799 if ( nodeSet.size() < 3 )
7800 poly_nodes.resize( poly_nodes.size() - nodeSet.size() );
7802 quantities.push_back( nodeSet.size() );
7804 if ( quantities.size() >= 4 )
7806 const SMDS_MeshElement* newElem = aMesh->AddPolyhedralVolume( poly_nodes, quantities );
7807 myLastCreatedElems.Append( newElem );
7808 if ( aShapeId && newElem )
7809 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7810 rmElemIds.push_back( elem->GetID() );
7814 } // case HEXAHEDRON
7818 } // switch ( nbNodes )
7820 } // if ( nbNodes != nbUniqueNodes ) // some nodes stick
7822 if ( isOk ) // a non-poly elem remains valid after sticking nodes
7824 if ( nbNodes != nbUniqueNodes ||
7825 !aMesh->ChangeElementNodes( elem, & curNodes[0], nbNodes ))
7827 elemType.Init( elem ).SetID( elem->GetID() );
7829 SMESHDS_SubMesh * sm = aShapeId > 0 ? aMesh->MeshElements(aShapeId) : 0;
7830 aMesh->RemoveFreeElement(elem, sm, /*fromGroups=*/false);
7832 uniqueNodes.resize(nbUniqueNodes);
7833 SMDS_MeshElement* newElem = this->AddElement( uniqueNodes, elemType );
7834 if ( sm && newElem )
7835 sm->AddElement( newElem );
7836 if ( elem != newElem )
7837 ReplaceElemInGroups( elem, newElem, aMesh );
7841 // Remove invalid regular element or invalid polygon
7842 rmElemIds.push_back( elem->GetID() );
7845 } // loop on elements
7847 // Remove bad elements, then equal nodes (order important)
7849 Remove( rmElemIds, false );
7850 Remove( rmNodeIds, true );
7856 // ========================================================
7857 // class : SortableElement
7858 // purpose : allow sorting elements basing on their nodes
7859 // ========================================================
7860 class SortableElement : public set <const SMDS_MeshElement*>
7864 SortableElement( const SMDS_MeshElement* theElem )
7867 SMDS_ElemIteratorPtr nodeIt = theElem->nodesIterator();
7868 while ( nodeIt->more() )
7869 this->insert( nodeIt->next() );
7872 const SMDS_MeshElement* Get() const
7876 mutable const SMDS_MeshElement* myElem;
7879 //=======================================================================
7880 //function : FindEqualElements
7881 //purpose : Return list of group of elements built on the same nodes.
7882 // Search among theElements or in the whole mesh if theElements is empty
7883 //=======================================================================
7885 void SMESH_MeshEditor::FindEqualElements(TIDSortedElemSet & theElements,
7886 TListOfListOfElementsID & theGroupsOfElementsID)
7888 myLastCreatedElems.Clear();
7889 myLastCreatedNodes.Clear();
7891 typedef map< SortableElement, int > TMapOfNodeSet;
7892 typedef list<int> TGroupOfElems;
7894 if ( theElements.empty() )
7895 { // get all elements in the mesh
7896 SMDS_ElemIteratorPtr eIt = GetMeshDS()->elementsIterator();
7897 while ( eIt->more() )
7898 theElements.insert( theElements.end(), eIt->next() );
7901 vector< TGroupOfElems > arrayOfGroups;
7902 TGroupOfElems groupOfElems;
7903 TMapOfNodeSet mapOfNodeSet;
7905 TIDSortedElemSet::iterator elemIt = theElements.begin();
7906 for ( int i = 0; elemIt != theElements.end(); ++elemIt )
7908 const SMDS_MeshElement* curElem = *elemIt;
7909 SortableElement SE(curElem);
7911 pair< TMapOfNodeSet::iterator, bool> pp = mapOfNodeSet.insert(make_pair(SE, i));
7912 if ( !pp.second ) { // one more coincident elem
7913 TMapOfNodeSet::iterator& itSE = pp.first;
7914 int ind = (*itSE).second;
7915 arrayOfGroups[ind].push_back( curElem->GetID() );
7918 arrayOfGroups.push_back( groupOfElems );
7919 arrayOfGroups.back().push_back( curElem->GetID() );
7924 groupOfElems.clear();
7925 vector< TGroupOfElems >::iterator groupIt = arrayOfGroups.begin();
7926 for ( ; groupIt != arrayOfGroups.end(); ++groupIt )
7928 if ( groupIt->size() > 1 ) {
7929 //groupOfElems.sort(); -- theElements is sorted already
7930 theGroupsOfElementsID.push_back( groupOfElems );
7931 theGroupsOfElementsID.back().splice( theGroupsOfElementsID.back().end(), *groupIt );
7936 //=======================================================================
7937 //function : MergeElements
7938 //purpose : In each given group, substitute all elements by the first one.
7939 //=======================================================================
7941 void SMESH_MeshEditor::MergeElements(TListOfListOfElementsID & theGroupsOfElementsID)
7943 myLastCreatedElems.Clear();
7944 myLastCreatedNodes.Clear();
7946 typedef list<int> TListOfIDs;
7947 TListOfIDs rmElemIds; // IDs of elems to remove
7949 SMESHDS_Mesh* aMesh = GetMeshDS();
7951 TListOfListOfElementsID::iterator groupsIt = theGroupsOfElementsID.begin();
7952 while ( groupsIt != theGroupsOfElementsID.end() ) {
7953 TListOfIDs& aGroupOfElemID = *groupsIt;
7954 aGroupOfElemID.sort();
7955 int elemIDToKeep = aGroupOfElemID.front();
7956 const SMDS_MeshElement* elemToKeep = aMesh->FindElement(elemIDToKeep);
7957 aGroupOfElemID.pop_front();
7958 TListOfIDs::iterator idIt = aGroupOfElemID.begin();
7959 while ( idIt != aGroupOfElemID.end() ) {
7960 int elemIDToRemove = *idIt;
7961 const SMDS_MeshElement* elemToRemove = aMesh->FindElement(elemIDToRemove);
7962 // add the kept element in groups of removed one (PAL15188)
7963 AddToSameGroups( elemToKeep, elemToRemove, aMesh );
7964 rmElemIds.push_back( elemIDToRemove );
7970 Remove( rmElemIds, false );
7973 //=======================================================================
7974 //function : MergeEqualElements
7975 //purpose : Remove all but one of elements built on the same nodes.
7976 //=======================================================================
7978 void SMESH_MeshEditor::MergeEqualElements()
7980 TIDSortedElemSet aMeshElements; /* empty input ==
7981 to merge equal elements in the whole mesh */
7982 TListOfListOfElementsID aGroupsOfElementsID;
7983 FindEqualElements(aMeshElements, aGroupsOfElementsID);
7984 MergeElements(aGroupsOfElementsID);
7987 //=======================================================================
7988 //function : findAdjacentFace
7990 //=======================================================================
7992 static const SMDS_MeshElement* findAdjacentFace(const SMDS_MeshNode* n1,
7993 const SMDS_MeshNode* n2,
7994 const SMDS_MeshElement* elem)
7996 TIDSortedElemSet elemSet, avoidSet;
7998 avoidSet.insert ( elem );
7999 return SMESH_MeshAlgos::FindFaceInSet( n1, n2, elemSet, avoidSet );
8002 //=======================================================================
8003 //function : findSegment
8004 //purpose : Return a mesh segment by two nodes one of which can be medium
8005 //=======================================================================
8007 static const SMDS_MeshElement* findSegment(const SMDS_MeshNode* n1,
8008 const SMDS_MeshNode* n2)
8010 SMDS_ElemIteratorPtr it = n1->GetInverseElementIterator( SMDSAbs_Edge );
8011 while ( it->more() )
8013 const SMDS_MeshElement* seg = it->next();
8014 if ( seg->GetNodeIndex( n2 ) >= 0 )
8020 //=======================================================================
8021 //function : FindFreeBorder
8023 //=======================================================================
8025 #define ControlFreeBorder SMESH::Controls::FreeEdges::IsFreeEdge
8027 bool SMESH_MeshEditor::FindFreeBorder (const SMDS_MeshNode* theFirstNode,
8028 const SMDS_MeshNode* theSecondNode,
8029 const SMDS_MeshNode* theLastNode,
8030 list< const SMDS_MeshNode* > & theNodes,
8031 list< const SMDS_MeshElement* >& theFaces)
8033 if ( !theFirstNode || !theSecondNode )
8035 // find border face between theFirstNode and theSecondNode
8036 const SMDS_MeshElement* curElem = findAdjacentFace( theFirstNode, theSecondNode, 0 );
8040 theFaces.push_back( curElem );
8041 theNodes.push_back( theFirstNode );
8042 theNodes.push_back( theSecondNode );
8044 const SMDS_MeshNode *nIgnore = theFirstNode, *nStart = theSecondNode;
8045 TIDSortedElemSet foundElems;
8046 bool needTheLast = ( theLastNode != 0 );
8048 while ( nStart != theLastNode ) {
8049 if ( nStart == theFirstNode )
8050 return !needTheLast;
8052 // find all free border faces sharing form nStart
8054 list< const SMDS_MeshElement* > curElemList;
8055 list< const SMDS_MeshNode* > nStartList;
8056 SMDS_ElemIteratorPtr invElemIt = nStart->GetInverseElementIterator(SMDSAbs_Face);
8057 while ( invElemIt->more() ) {
8058 const SMDS_MeshElement* e = invElemIt->next();
8059 if ( e == curElem || foundElems.insert( e ).second ) {
8061 int iNode = 0, nbNodes = e->NbNodes();
8062 vector<const SMDS_MeshNode*> nodes(nbNodes+1);
8064 if ( e->IsQuadratic() ) {
8065 const SMDS_VtkFace* F =
8066 dynamic_cast<const SMDS_VtkFace*>(e);
8067 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8068 // use special nodes iterator
8069 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8070 while( anIter->more() ) {
8071 nodes[ iNode++ ] = cast2Node(anIter->next());
8075 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
8076 while ( nIt->more() )
8077 nodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nIt->next() );
8079 nodes[ iNode ] = nodes[ 0 ];
8081 for ( iNode = 0; iNode < nbNodes; iNode++ )
8082 if (((nodes[ iNode ] == nStart && nodes[ iNode + 1] != nIgnore ) ||
8083 (nodes[ iNode + 1] == nStart && nodes[ iNode ] != nIgnore )) &&
8084 ControlFreeBorder( &nodes[ iNode ], e->GetID() ))
8086 nStartList.push_back( nodes[ iNode + ( nodes[ iNode ] == nStart ? 1 : 0 )]);
8087 curElemList.push_back( e );
8091 // analyse the found
8093 int nbNewBorders = curElemList.size();
8094 if ( nbNewBorders == 0 ) {
8095 // no free border furthermore
8096 return !needTheLast;
8098 else if ( nbNewBorders == 1 ) {
8099 // one more element found
8101 nStart = nStartList.front();
8102 curElem = curElemList.front();
8103 theFaces.push_back( curElem );
8104 theNodes.push_back( nStart );
8107 // several continuations found
8108 list< const SMDS_MeshElement* >::iterator curElemIt;
8109 list< const SMDS_MeshNode* >::iterator nStartIt;
8110 // check if one of them reached the last node
8111 if ( needTheLast ) {
8112 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8113 curElemIt!= curElemList.end();
8114 curElemIt++, nStartIt++ )
8115 if ( *nStartIt == theLastNode ) {
8116 theFaces.push_back( *curElemIt );
8117 theNodes.push_back( *nStartIt );
8121 // find the best free border by the continuations
8122 list<const SMDS_MeshNode*> contNodes[ 2 ], *cNL;
8123 list<const SMDS_MeshElement*> contFaces[ 2 ], *cFL;
8124 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8125 curElemIt!= curElemList.end();
8126 curElemIt++, nStartIt++ )
8128 cNL = & contNodes[ contNodes[0].empty() ? 0 : 1 ];
8129 cFL = & contFaces[ contFaces[0].empty() ? 0 : 1 ];
8130 // find one more free border
8131 if ( ! SMESH_MeshEditor::FindFreeBorder( nStart, *nStartIt, theLastNode, *cNL, *cFL )) {
8135 else if ( !contNodes[0].empty() && !contNodes[1].empty() ) {
8136 // choice: clear a worse one
8137 int iLongest = ( contNodes[0].size() < contNodes[1].size() ? 1 : 0 );
8138 int iWorse = ( needTheLast ? 1 - iLongest : iLongest );
8139 contNodes[ iWorse ].clear();
8140 contFaces[ iWorse ].clear();
8143 if ( contNodes[0].empty() && contNodes[1].empty() )
8146 // append the best free border
8147 cNL = & contNodes[ contNodes[0].empty() ? 1 : 0 ];
8148 cFL = & contFaces[ contFaces[0].empty() ? 1 : 0 ];
8149 theNodes.pop_back(); // remove nIgnore
8150 theNodes.pop_back(); // remove nStart
8151 theFaces.pop_back(); // remove curElem
8152 list< const SMDS_MeshNode* >::iterator nIt = cNL->begin();
8153 list< const SMDS_MeshElement* >::iterator fIt = cFL->begin();
8154 for ( ; nIt != cNL->end(); nIt++ ) theNodes.push_back( *nIt );
8155 for ( ; fIt != cFL->end(); fIt++ ) theFaces.push_back( *fIt );
8158 } // several continuations found
8159 } // while ( nStart != theLastNode )
8164 //=======================================================================
8165 //function : CheckFreeBorderNodes
8166 //purpose : Return true if the tree nodes are on a free border
8167 //=======================================================================
8169 bool SMESH_MeshEditor::CheckFreeBorderNodes(const SMDS_MeshNode* theNode1,
8170 const SMDS_MeshNode* theNode2,
8171 const SMDS_MeshNode* theNode3)
8173 list< const SMDS_MeshNode* > nodes;
8174 list< const SMDS_MeshElement* > faces;
8175 return FindFreeBorder( theNode1, theNode2, theNode3, nodes, faces);
8178 //=======================================================================
8179 //function : SewFreeBorder
8181 //warning : for border-to-side sewing theSideSecondNode is considered as
8182 // the last side node and theSideThirdNode is not used
8183 //=======================================================================
8185 SMESH_MeshEditor::Sew_Error
8186 SMESH_MeshEditor::SewFreeBorder (const SMDS_MeshNode* theBordFirstNode,
8187 const SMDS_MeshNode* theBordSecondNode,
8188 const SMDS_MeshNode* theBordLastNode,
8189 const SMDS_MeshNode* theSideFirstNode,
8190 const SMDS_MeshNode* theSideSecondNode,
8191 const SMDS_MeshNode* theSideThirdNode,
8192 const bool theSideIsFreeBorder,
8193 const bool toCreatePolygons,
8194 const bool toCreatePolyedrs)
8196 myLastCreatedElems.Clear();
8197 myLastCreatedNodes.Clear();
8199 Sew_Error aResult = SEW_OK;
8201 // ====================================
8202 // find side nodes and elements
8203 // ====================================
8205 list< const SMDS_MeshNode* > nSide[ 2 ];
8206 list< const SMDS_MeshElement* > eSide[ 2 ];
8207 list< const SMDS_MeshNode* >::iterator nIt[ 2 ];
8208 list< const SMDS_MeshElement* >::iterator eIt[ 2 ];
8212 if (!FindFreeBorder(theBordFirstNode,theBordSecondNode,theBordLastNode,
8213 nSide[0], eSide[0])) {
8214 MESSAGE(" Free Border 1 not found " );
8215 aResult = SEW_BORDER1_NOT_FOUND;
8217 if (theSideIsFreeBorder) {
8220 if (!FindFreeBorder(theSideFirstNode, theSideSecondNode, theSideThirdNode,
8221 nSide[1], eSide[1])) {
8222 MESSAGE(" Free Border 2 not found " );
8223 aResult = ( aResult != SEW_OK ? SEW_BOTH_BORDERS_NOT_FOUND : SEW_BORDER2_NOT_FOUND );
8226 if ( aResult != SEW_OK )
8229 if (!theSideIsFreeBorder) {
8233 // -------------------------------------------------------------------------
8235 // 1. If nodes to merge are not coincident, move nodes of the free border
8236 // from the coord sys defined by the direction from the first to last
8237 // nodes of the border to the correspondent sys of the side 2
8238 // 2. On the side 2, find the links most co-directed with the correspondent
8239 // links of the free border
8240 // -------------------------------------------------------------------------
8242 // 1. Since sewing may break if there are volumes to split on the side 2,
8243 // we won't move nodes but just compute new coordinates for them
8244 typedef map<const SMDS_MeshNode*, gp_XYZ> TNodeXYZMap;
8245 TNodeXYZMap nBordXYZ;
8246 list< const SMDS_MeshNode* >& bordNodes = nSide[ 0 ];
8247 list< const SMDS_MeshNode* >::iterator nBordIt;
8249 gp_XYZ Pb1( theBordFirstNode->X(), theBordFirstNode->Y(), theBordFirstNode->Z() );
8250 gp_XYZ Pb2( theBordLastNode->X(), theBordLastNode->Y(), theBordLastNode->Z() );
8251 gp_XYZ Ps1( theSideFirstNode->X(), theSideFirstNode->Y(), theSideFirstNode->Z() );
8252 gp_XYZ Ps2( theSideSecondNode->X(), theSideSecondNode->Y(), theSideSecondNode->Z() );
8253 double tol2 = 1.e-8;
8254 gp_Vec Vbs1( Pb1 - Ps1 ),Vbs2( Pb2 - Ps2 );
8255 if ( Vbs1.SquareMagnitude() > tol2 || Vbs2.SquareMagnitude() > tol2 ) {
8256 // Need node movement.
8258 // find X and Z axes to create trsf
8259 gp_Vec Zb( Pb1 - Pb2 ), Zs( Ps1 - Ps2 );
8261 if ( X.SquareMagnitude() <= gp::Resolution() * gp::Resolution() )
8263 X = gp_Ax2( gp::Origin(), Zb ).XDirection();
8266 gp_Ax3 toBordAx( Pb1, Zb, X );
8267 gp_Ax3 fromSideAx( Ps1, Zs, X );
8268 gp_Ax3 toGlobalAx( gp::Origin(), gp::DZ(), gp::DX() );
8270 gp_Trsf toBordSys, fromSide2Sys;
8271 toBordSys.SetTransformation( toBordAx );
8272 fromSide2Sys.SetTransformation( fromSideAx, toGlobalAx );
8273 fromSide2Sys.SetScaleFactor( Zs.Magnitude() / Zb.Magnitude() );
8276 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8277 const SMDS_MeshNode* n = *nBordIt;
8278 gp_XYZ xyz( n->X(),n->Y(),n->Z() );
8279 toBordSys.Transforms( xyz );
8280 fromSide2Sys.Transforms( xyz );
8281 nBordXYZ.insert( TNodeXYZMap::value_type( n, xyz ));
8285 // just insert nodes XYZ in the nBordXYZ map
8286 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8287 const SMDS_MeshNode* n = *nBordIt;
8288 nBordXYZ.insert( TNodeXYZMap::value_type( n, gp_XYZ( n->X(),n->Y(),n->Z() )));
8292 // 2. On the side 2, find the links most co-directed with the correspondent
8293 // links of the free border
8295 list< const SMDS_MeshElement* >& sideElems = eSide[ 1 ];
8296 list< const SMDS_MeshNode* >& sideNodes = nSide[ 1 ];
8297 sideNodes.push_back( theSideFirstNode );
8299 bool hasVolumes = false;
8300 LinkID_Gen aLinkID_Gen( GetMeshDS() );
8301 set<long> foundSideLinkIDs, checkedLinkIDs;
8302 SMDS_VolumeTool volume;
8303 //const SMDS_MeshNode* faceNodes[ 4 ];
8305 const SMDS_MeshNode* sideNode;
8306 const SMDS_MeshElement* sideElem = 0;
8307 const SMDS_MeshNode* prevSideNode = theSideFirstNode;
8308 const SMDS_MeshNode* prevBordNode = theBordFirstNode;
8309 nBordIt = bordNodes.begin();
8311 // border node position and border link direction to compare with
8312 gp_XYZ bordPos = nBordXYZ[ *nBordIt ];
8313 gp_XYZ bordDir = bordPos - nBordXYZ[ prevBordNode ];
8314 // choose next side node by link direction or by closeness to
8315 // the current border node:
8316 bool searchByDir = ( *nBordIt != theBordLastNode );
8318 // find the next node on the Side 2
8320 double maxDot = -DBL_MAX, minDist = DBL_MAX;
8322 checkedLinkIDs.clear();
8323 gp_XYZ prevXYZ( prevSideNode->X(), prevSideNode->Y(), prevSideNode->Z() );
8325 // loop on inverse elements of current node (prevSideNode) on the Side 2
8326 SMDS_ElemIteratorPtr invElemIt = prevSideNode->GetInverseElementIterator();
8327 while ( invElemIt->more() )
8329 const SMDS_MeshElement* elem = invElemIt->next();
8330 // prepare data for a loop on links coming to prevSideNode, of a face or a volume
8331 int iPrevNode = 0, iNode = 0, nbNodes = elem->NbNodes();
8332 vector< const SMDS_MeshNode* > faceNodes( nbNodes, (const SMDS_MeshNode*)0 );
8333 bool isVolume = volume.Set( elem );
8334 const SMDS_MeshNode** nodes = isVolume ? volume.GetNodes() : & faceNodes[0];
8335 if ( isVolume ) // --volume
8337 else if ( elem->GetType()==SMDSAbs_Face ) { // --face
8338 // retrieve all face nodes and find iPrevNode - an index of the prevSideNode
8339 if(elem->IsQuadratic()) {
8340 const SMDS_VtkFace* F =
8341 dynamic_cast<const SMDS_VtkFace*>(elem);
8342 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8343 // use special nodes iterator
8344 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8345 while( anIter->more() ) {
8346 nodes[ iNode ] = cast2Node(anIter->next());
8347 if ( nodes[ iNode++ ] == prevSideNode )
8348 iPrevNode = iNode - 1;
8352 SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
8353 while ( nIt->more() ) {
8354 nodes[ iNode ] = cast2Node( nIt->next() );
8355 if ( nodes[ iNode++ ] == prevSideNode )
8356 iPrevNode = iNode - 1;
8359 // there are 2 links to check
8364 // loop on links, to be precise, on the second node of links
8365 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
8366 const SMDS_MeshNode* n = nodes[ iNode ];
8368 if ( !volume.IsLinked( n, prevSideNode ))
8372 if ( iNode ) // a node before prevSideNode
8373 n = nodes[ iPrevNode == 0 ? elem->NbNodes() - 1 : iPrevNode - 1 ];
8374 else // a node after prevSideNode
8375 n = nodes[ iPrevNode + 1 == elem->NbNodes() ? 0 : iPrevNode + 1 ];
8377 // check if this link was already used
8378 long iLink = aLinkID_Gen.GetLinkID( prevSideNode, n );
8379 bool isJustChecked = !checkedLinkIDs.insert( iLink ).second;
8380 if (!isJustChecked &&
8381 foundSideLinkIDs.find( iLink ) == foundSideLinkIDs.end() )
8383 // test a link geometrically
8384 gp_XYZ nextXYZ ( n->X(), n->Y(), n->Z() );
8385 bool linkIsBetter = false;
8386 double dot = 0.0, dist = 0.0;
8387 if ( searchByDir ) { // choose most co-directed link
8388 dot = bordDir * ( nextXYZ - prevXYZ ).Normalized();
8389 linkIsBetter = ( dot > maxDot );
8391 else { // choose link with the node closest to bordPos
8392 dist = ( nextXYZ - bordPos ).SquareModulus();
8393 linkIsBetter = ( dist < minDist );
8395 if ( linkIsBetter ) {
8404 } // loop on inverse elements of prevSideNode
8407 MESSAGE(" Can't find path by links of the Side 2 ");
8408 return SEW_BAD_SIDE_NODES;
8410 sideNodes.push_back( sideNode );
8411 sideElems.push_back( sideElem );
8412 foundSideLinkIDs.insert ( linkID );
8413 prevSideNode = sideNode;
8415 if ( *nBordIt == theBordLastNode )
8416 searchByDir = false;
8418 // find the next border link to compare with
8419 gp_XYZ sidePos( sideNode->X(), sideNode->Y(), sideNode->Z() );
8420 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8421 // move to next border node if sideNode is before forward border node (bordPos)
8422 while ( *nBordIt != theBordLastNode && !searchByDir ) {
8423 prevBordNode = *nBordIt;
8425 bordPos = nBordXYZ[ *nBordIt ];
8426 bordDir = bordPos - nBordXYZ[ prevBordNode ];
8427 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8431 while ( sideNode != theSideSecondNode );
8433 if ( hasVolumes && sideNodes.size () != bordNodes.size() && !toCreatePolyedrs) {
8434 MESSAGE("VOLUME SPLITTING IS FORBIDDEN");
8435 return SEW_VOLUMES_TO_SPLIT; // volume splitting is forbidden
8437 } // end nodes search on the side 2
8439 // ============================
8440 // sew the border to the side 2
8441 // ============================
8443 int nbNodes[] = { (int)nSide[0].size(), (int)nSide[1].size() };
8444 int maxNbNodes = Max( nbNodes[0], nbNodes[1] );
8446 bool toMergeConformal = ( nbNodes[0] == nbNodes[1] );
8447 if ( toMergeConformal && toCreatePolygons )
8449 // do not merge quadrangles if polygons are OK (IPAL0052824)
8450 eIt[0] = eSide[0].begin();
8451 eIt[1] = eSide[1].begin();
8452 bool allQuads[2] = { true, true };
8453 for ( int iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8454 for ( ; allQuads[iBord] && eIt[iBord] != eSide[iBord].end(); ++eIt[iBord] )
8455 allQuads[iBord] = ( (*eIt[iBord])->NbCornerNodes() == 4 );
8457 toMergeConformal = ( !allQuads[0] && !allQuads[1] );
8460 TListOfListOfNodes nodeGroupsToMerge;
8461 if (( toMergeConformal ) ||
8462 ( theSideIsFreeBorder && !theSideThirdNode )) {
8464 // all nodes are to be merged
8466 for (nIt[0] = nSide[0].begin(), nIt[1] = nSide[1].begin();
8467 nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end();
8468 nIt[0]++, nIt[1]++ )
8470 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8471 nodeGroupsToMerge.back().push_back( *nIt[1] ); // to keep
8472 nodeGroupsToMerge.back().push_back( *nIt[0] ); // to remove
8477 // insert new nodes into the border and the side to get equal nb of segments
8479 // get normalized parameters of nodes on the borders
8480 vector< double > param[ 2 ];
8481 param[0].resize( maxNbNodes );
8482 param[1].resize( maxNbNodes );
8484 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8485 list< const SMDS_MeshNode* >& nodes = nSide[ iBord ];
8486 list< const SMDS_MeshNode* >::iterator nIt = nodes.begin();
8487 const SMDS_MeshNode* nPrev = *nIt;
8488 double bordLength = 0;
8489 for ( iNode = 0; nIt != nodes.end(); nIt++, iNode++ ) { // loop on border nodes
8490 const SMDS_MeshNode* nCur = *nIt;
8491 gp_XYZ segment (nCur->X() - nPrev->X(),
8492 nCur->Y() - nPrev->Y(),
8493 nCur->Z() - nPrev->Z());
8494 double segmentLen = segment.Modulus();
8495 bordLength += segmentLen;
8496 param[ iBord ][ iNode ] = bordLength;
8499 // normalize within [0,1]
8500 for ( iNode = 0; iNode < nbNodes[ iBord ]; iNode++ ) {
8501 param[ iBord ][ iNode ] /= bordLength;
8505 // loop on border segments
8506 const SMDS_MeshNode *nPrev[ 2 ] = { 0, 0 };
8507 int i[ 2 ] = { 0, 0 };
8508 nIt[0] = nSide[0].begin(); eIt[0] = eSide[0].begin();
8509 nIt[1] = nSide[1].begin(); eIt[1] = eSide[1].begin();
8511 TElemOfNodeListMap insertMap;
8512 TElemOfNodeListMap::iterator insertMapIt;
8514 // key: elem to insert nodes into
8515 // value: 2 nodes to insert between + nodes to be inserted
8517 bool next[ 2 ] = { false, false };
8519 // find min adjacent segment length after sewing
8520 double nextParam = 10., prevParam = 0;
8521 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8522 if ( i[ iBord ] + 1 < nbNodes[ iBord ])
8523 nextParam = Min( nextParam, param[iBord][ i[iBord] + 1 ]);
8524 if ( i[ iBord ] > 0 )
8525 prevParam = Max( prevParam, param[iBord][ i[iBord] - 1 ]);
8527 double minParam = Min( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8528 double maxParam = Max( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8529 double minSegLen = Min( nextParam - minParam, maxParam - prevParam );
8531 // choose to insert or to merge nodes
8532 double du = param[ 1 ][ i[1] ] - param[ 0 ][ i[0] ];
8533 if ( Abs( du ) <= minSegLen * 0.2 ) {
8536 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8537 const SMDS_MeshNode* n0 = *nIt[0];
8538 const SMDS_MeshNode* n1 = *nIt[1];
8539 nodeGroupsToMerge.back().push_back( n1 );
8540 nodeGroupsToMerge.back().push_back( n0 );
8541 // position of node of the border changes due to merge
8542 param[ 0 ][ i[0] ] += du;
8543 // move n1 for the sake of elem shape evaluation during insertion.
8544 // n1 will be removed by MergeNodes() anyway
8545 const_cast<SMDS_MeshNode*>( n0 )->setXYZ( n1->X(), n1->Y(), n1->Z() );
8546 next[0] = next[1] = true;
8551 int intoBord = ( du < 0 ) ? 0 : 1;
8552 const SMDS_MeshElement* elem = *eIt [ intoBord ];
8553 const SMDS_MeshNode* n1 = nPrev[ intoBord ];
8554 const SMDS_MeshNode* n2 = *nIt [ intoBord ];
8555 const SMDS_MeshNode* nIns = *nIt [ 1 - intoBord ];
8556 if ( intoBord == 1 ) {
8557 // move node of the border to be on a link of elem of the side
8558 gp_XYZ p1 (n1->X(), n1->Y(), n1->Z());
8559 gp_XYZ p2 (n2->X(), n2->Y(), n2->Z());
8560 double ratio = du / ( param[ 1 ][ i[1] ] - param[ 1 ][ i[1]-1 ]);
8561 gp_XYZ p = p2 * ( 1 - ratio ) + p1 * ratio;
8562 GetMeshDS()->MoveNode( nIns, p.X(), p.Y(), p.Z() );
8564 insertMapIt = insertMap.find( elem );
8565 bool notFound = ( insertMapIt == insertMap.end() );
8566 bool otherLink = ( !notFound && (*insertMapIt).second.front() != n1 );
8568 // insert into another link of the same element:
8569 // 1. perform insertion into the other link of the elem
8570 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8571 const SMDS_MeshNode* n12 = nodeList.front(); nodeList.pop_front();
8572 const SMDS_MeshNode* n22 = nodeList.front(); nodeList.pop_front();
8573 InsertNodesIntoLink( elem, n12, n22, nodeList, toCreatePolygons );
8574 // 2. perform insertion into the link of adjacent faces
8575 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n12, n22, elem )) {
8576 InsertNodesIntoLink( adjElem, n12, n22, nodeList, toCreatePolygons );
8578 while ( const SMDS_MeshElement* seg = findSegment( n12, n22 )) {
8579 InsertNodesIntoLink( seg, n12, n22, nodeList );
8581 if (toCreatePolyedrs) {
8582 // perform insertion into the links of adjacent volumes
8583 UpdateVolumes(n12, n22, nodeList);
8585 // 3. find an element appeared on n1 and n2 after the insertion
8586 insertMap.erase( elem );
8587 elem = findAdjacentFace( n1, n2, 0 );
8589 if ( notFound || otherLink ) {
8590 // add element and nodes of the side into the insertMap
8591 insertMapIt = insertMap.insert( make_pair( elem, list<const SMDS_MeshNode*>() )).first;
8592 (*insertMapIt).second.push_back( n1 );
8593 (*insertMapIt).second.push_back( n2 );
8595 // add node to be inserted into elem
8596 (*insertMapIt).second.push_back( nIns );
8597 next[ 1 - intoBord ] = true;
8600 // go to the next segment
8601 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8602 if ( next[ iBord ] ) {
8603 if ( i[ iBord ] != 0 && eIt[ iBord ] != eSide[ iBord ].end())
8605 nPrev[ iBord ] = *nIt[ iBord ];
8606 nIt[ iBord ]++; i[ iBord ]++;
8610 while ( nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end());
8612 // perform insertion of nodes into elements
8614 for (insertMapIt = insertMap.begin();
8615 insertMapIt != insertMap.end();
8618 const SMDS_MeshElement* elem = (*insertMapIt).first;
8619 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8620 const SMDS_MeshNode* n1 = nodeList.front(); nodeList.pop_front();
8621 const SMDS_MeshNode* n2 = nodeList.front(); nodeList.pop_front();
8623 InsertNodesIntoLink( elem, n1, n2, nodeList, toCreatePolygons );
8625 while ( const SMDS_MeshElement* seg = findSegment( n1, n2 )) {
8626 InsertNodesIntoLink( seg, n1, n2, nodeList );
8629 if ( !theSideIsFreeBorder ) {
8630 // look for and insert nodes into the faces adjacent to elem
8631 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n1, n2, elem )) {
8632 InsertNodesIntoLink( adjElem, n1, n2, nodeList, toCreatePolygons );
8635 if (toCreatePolyedrs) {
8636 // perform insertion into the links of adjacent volumes
8637 UpdateVolumes(n1, n2, nodeList);
8640 } // end: insert new nodes
8642 MergeNodes ( nodeGroupsToMerge );
8645 // Remove coincident segments
8648 TIDSortedElemSet segments;
8649 SMESH_SequenceOfElemPtr newFaces;
8650 for ( int i = 1; i <= myLastCreatedElems.Length(); ++i )
8652 if ( !myLastCreatedElems(i) ) continue;
8653 if ( myLastCreatedElems(i)->GetType() == SMDSAbs_Edge )
8654 segments.insert( segments.end(), myLastCreatedElems(i) );
8656 newFaces.Append( myLastCreatedElems(i) );
8658 // get segments adjacent to merged nodes
8659 TListOfListOfNodes::iterator groupIt = nodeGroupsToMerge.begin();
8660 for ( ; groupIt != nodeGroupsToMerge.end(); groupIt++ )
8662 const list<const SMDS_MeshNode*>& nodes = *groupIt;
8663 SMDS_ElemIteratorPtr segIt = nodes.front()->GetInverseElementIterator( SMDSAbs_Edge );
8664 while ( segIt->more() )
8665 segments.insert( segIt->next() );
8669 TListOfListOfElementsID equalGroups;
8670 if ( !segments.empty() )
8671 FindEqualElements( segments, equalGroups );
8672 if ( !equalGroups.empty() )
8674 // remove from segments those that will be removed
8675 TListOfListOfElementsID::iterator itGroups = equalGroups.begin();
8676 for ( ; itGroups != equalGroups.end(); ++itGroups )
8678 list< int >& group = *itGroups;
8679 list< int >::iterator id = group.begin();
8680 for ( ++id; id != group.end(); ++id )
8681 if ( const SMDS_MeshElement* seg = GetMeshDS()->FindElement( *id ))
8682 segments.erase( seg );
8684 // remove equal segments
8685 MergeElements( equalGroups );
8687 // restore myLastCreatedElems
8688 myLastCreatedElems = newFaces;
8689 TIDSortedElemSet::iterator seg = segments.begin();
8690 for ( ; seg != segments.end(); ++seg )
8691 myLastCreatedElems.Append( *seg );
8697 //=======================================================================
8698 //function : InsertNodesIntoLink
8699 //purpose : insert theNodesToInsert into theElement between theBetweenNode1
8700 // and theBetweenNode2 and split theElement
8701 //=======================================================================
8703 void SMESH_MeshEditor::InsertNodesIntoLink(const SMDS_MeshElement* theElement,
8704 const SMDS_MeshNode* theBetweenNode1,
8705 const SMDS_MeshNode* theBetweenNode2,
8706 list<const SMDS_MeshNode*>& theNodesToInsert,
8707 const bool toCreatePoly)
8709 if ( !theElement ) return;
8711 SMESHDS_Mesh *aMesh = GetMeshDS();
8712 vector<const SMDS_MeshElement*> newElems;
8714 if ( theElement->GetType() == SMDSAbs_Edge )
8716 theNodesToInsert.push_front( theBetweenNode1 );
8717 theNodesToInsert.push_back ( theBetweenNode2 );
8718 list<const SMDS_MeshNode*>::iterator n = theNodesToInsert.begin();
8719 const SMDS_MeshNode* n1 = *n;
8720 for ( ++n; n != theNodesToInsert.end(); ++n )
8722 const SMDS_MeshNode* n2 = *n;
8723 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( n1, n2 ))
8724 AddToSameGroups( seg, theElement, aMesh );
8726 newElems.push_back( aMesh->AddEdge ( n1, n2 ));
8729 theNodesToInsert.pop_front();
8730 theNodesToInsert.pop_back();
8732 if ( theElement->IsQuadratic() ) // add a not split part
8734 vector<const SMDS_MeshNode*> nodes( theElement->begin_nodes(),
8735 theElement->end_nodes() );
8736 int iOther = 0, nbN = nodes.size();
8737 for ( ; iOther < nbN; ++iOther )
8738 if ( nodes[iOther] != theBetweenNode1 &&
8739 nodes[iOther] != theBetweenNode2 )
8743 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[0], nodes[1] ))
8744 AddToSameGroups( seg, theElement, aMesh );
8746 newElems.push_back( aMesh->AddEdge ( nodes[0], nodes[1] ));
8748 else if ( iOther == 2 )
8750 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[1], nodes[2] ))
8751 AddToSameGroups( seg, theElement, aMesh );
8753 newElems.push_back( aMesh->AddEdge ( nodes[1], nodes[2] ));
8756 // treat new elements
8757 for ( size_t i = 0; i < newElems.size(); ++i )
8760 aMesh->SetMeshElementOnShape( newElems[i], theElement->getshapeId() );
8761 myLastCreatedElems.Append( newElems[i] );
8763 ReplaceElemInGroups( theElement, newElems, aMesh );
8764 aMesh->RemoveElement( theElement );
8767 } // if ( theElement->GetType() == SMDSAbs_Edge )
8769 const SMDS_MeshElement* theFace = theElement;
8770 if ( theFace->GetType() != SMDSAbs_Face ) return;
8772 // find indices of 2 link nodes and of the rest nodes
8773 int iNode = 0, il1, il2, i3, i4;
8774 il1 = il2 = i3 = i4 = -1;
8775 vector<const SMDS_MeshNode*> nodes( theFace->NbNodes() );
8777 SMDS_NodeIteratorPtr nodeIt = theFace->interlacedNodesIterator();
8778 while ( nodeIt->more() ) {
8779 const SMDS_MeshNode* n = nodeIt->next();
8780 if ( n == theBetweenNode1 )
8782 else if ( n == theBetweenNode2 )
8788 nodes[ iNode++ ] = n;
8790 if ( il1 < 0 || il2 < 0 || i3 < 0 )
8793 // arrange link nodes to go one after another regarding the face orientation
8794 bool reverse = ( Abs( il2 - il1 ) == 1 ? il2 < il1 : il1 < il2 );
8795 list<const SMDS_MeshNode *> aNodesToInsert = theNodesToInsert;
8800 aNodesToInsert.reverse();
8802 // check that not link nodes of a quadrangles are in good order
8803 int nbFaceNodes = theFace->NbNodes();
8804 if ( nbFaceNodes == 4 && i4 - i3 != 1 ) {
8810 if (toCreatePoly || theFace->IsPoly()) {
8813 vector<const SMDS_MeshNode *> poly_nodes (nbFaceNodes + aNodesToInsert.size());
8815 // add nodes of face up to first node of link
8818 if ( theFace->IsQuadratic() ) {
8819 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>(theFace);
8820 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8821 // use special nodes iterator
8822 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8823 while( anIter->more() && !isFLN ) {
8824 const SMDS_MeshNode* n = cast2Node(anIter->next());
8825 poly_nodes[iNode++] = n;
8826 if (n == nodes[il1]) {
8830 // add nodes to insert
8831 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8832 for (; nIt != aNodesToInsert.end(); nIt++) {
8833 poly_nodes[iNode++] = *nIt;
8835 // add nodes of face starting from last node of link
8836 while ( anIter->more() ) {
8837 poly_nodes[iNode++] = cast2Node(anIter->next());
8841 SMDS_ElemIteratorPtr nodeIt = theFace->nodesIterator();
8842 while ( nodeIt->more() && !isFLN ) {
8843 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8844 poly_nodes[iNode++] = n;
8845 if (n == nodes[il1]) {
8849 // add nodes to insert
8850 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8851 for (; nIt != aNodesToInsert.end(); nIt++) {
8852 poly_nodes[iNode++] = *nIt;
8854 // add nodes of face starting from last node of link
8855 while ( nodeIt->more() ) {
8856 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8857 poly_nodes[iNode++] = n;
8862 newElems.push_back( aMesh->AddPolygonalFace( poly_nodes ));
8865 else if ( !theFace->IsQuadratic() )
8867 // put aNodesToInsert between theBetweenNode1 and theBetweenNode2
8868 int nbLinkNodes = 2 + aNodesToInsert.size();
8869 //const SMDS_MeshNode* linkNodes[ nbLinkNodes ];
8870 vector<const SMDS_MeshNode*> linkNodes( nbLinkNodes );
8871 linkNodes[ 0 ] = nodes[ il1 ];
8872 linkNodes[ nbLinkNodes - 1 ] = nodes[ il2 ];
8873 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8874 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
8875 linkNodes[ iNode++ ] = *nIt;
8877 // decide how to split a quadrangle: compare possible variants
8878 // and choose which of splits to be a quadrangle
8879 int i1, i2, iSplit, nbSplits = nbLinkNodes - 1, iBestQuad = 0;
8880 if ( nbFaceNodes == 3 ) {
8881 iBestQuad = nbSplits;
8884 else if ( nbFaceNodes == 4 ) {
8885 SMESH::Controls::NumericalFunctorPtr aCrit( new SMESH::Controls::AspectRatio);
8886 double aBestRate = DBL_MAX;
8887 for ( int iQuad = 0; iQuad < nbSplits; iQuad++ ) {
8889 double aBadRate = 0;
8890 // evaluate elements quality
8891 for ( iSplit = 0; iSplit < nbSplits; iSplit++ ) {
8892 if ( iSplit == iQuad ) {
8893 SMDS_FaceOfNodes quad (linkNodes[ i1++ ],
8897 aBadRate += getBadRate( &quad, aCrit );
8900 SMDS_FaceOfNodes tria (linkNodes[ i1++ ],
8902 nodes[ iSplit < iQuad ? i4 : i3 ]);
8903 aBadRate += getBadRate( &tria, aCrit );
8907 if ( aBadRate < aBestRate ) {
8909 aBestRate = aBadRate;
8914 // create new elements
8916 for ( iSplit = 0; iSplit < nbSplits - 1; iSplit++ )
8918 if ( iSplit == iBestQuad )
8919 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
8924 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
8926 nodes[ iSplit < iBestQuad ? i4 : i3 ]));
8929 const SMDS_MeshNode* newNodes[ 4 ];
8930 newNodes[ 0 ] = linkNodes[ i1 ];
8931 newNodes[ 1 ] = linkNodes[ i2 ];
8932 newNodes[ 2 ] = nodes[ iSplit >= iBestQuad ? i3 : i4 ];
8933 newNodes[ 3 ] = nodes[ i4 ];
8934 if (iSplit == iBestQuad)
8935 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2], newNodes[3] ));
8937 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2] ));
8939 } // end if(!theFace->IsQuadratic())
8941 else { // theFace is quadratic
8942 // we have to split theFace on simple triangles and one simple quadrangle
8944 int nbshift = tmp*2;
8945 // shift nodes in nodes[] by nbshift
8947 for(i=0; i<nbshift; i++) {
8948 const SMDS_MeshNode* n = nodes[0];
8949 for(j=0; j<nbFaceNodes-1; j++) {
8950 nodes[j] = nodes[j+1];
8952 nodes[nbFaceNodes-1] = n;
8954 il1 = il1 - nbshift;
8955 // now have to insert nodes between n0 and n1 or n1 and n2 (see below)
8956 // n0 n1 n2 n0 n1 n2
8957 // +-----+-----+ +-----+-----+
8966 // create new elements
8968 if ( nbFaceNodes == 6 ) { // quadratic triangle
8969 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
8970 if ( theFace->IsMediumNode(nodes[il1]) ) {
8971 // create quadrangle
8972 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[5] ));
8978 // create quadrangle
8979 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[5] ));
8985 else { // nbFaceNodes==8 - quadratic quadrangle
8986 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
8987 newElems.push_back( aMesh->AddFace( nodes[5], nodes[6], nodes[7] ));
8988 newElems.push_back( aMesh->AddFace( nodes[5], nodes[7], nodes[3] ));
8989 if ( theFace->IsMediumNode( nodes[ il1 ])) {
8990 // create quadrangle
8991 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[7] ));
8997 // create quadrangle
8998 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[7] ));
9004 // create needed triangles using n1,n2,n3 and inserted nodes
9005 int nbn = 2 + aNodesToInsert.size();
9006 vector<const SMDS_MeshNode*> aNodes(nbn);
9007 aNodes[0 ] = nodes[n1];
9008 aNodes[nbn-1] = nodes[n2];
9009 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
9010 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
9011 aNodes[iNode++] = *nIt;
9013 for ( i = 1; i < nbn; i++ )
9014 newElems.push_back( aMesh->AddFace( aNodes[i-1], aNodes[i], nodes[n3] ));
9017 // remove the old face
9018 for ( size_t i = 0; i < newElems.size(); ++i )
9021 aMesh->SetMeshElementOnShape( newElems[i], theFace->getshapeId() );
9022 myLastCreatedElems.Append( newElems[i] );
9024 ReplaceElemInGroups( theFace, newElems, aMesh );
9025 aMesh->RemoveElement(theFace);
9027 } // InsertNodesIntoLink()
9029 //=======================================================================
9030 //function : UpdateVolumes
9032 //=======================================================================
9034 void SMESH_MeshEditor::UpdateVolumes (const SMDS_MeshNode* theBetweenNode1,
9035 const SMDS_MeshNode* theBetweenNode2,
9036 list<const SMDS_MeshNode*>& theNodesToInsert)
9038 myLastCreatedElems.Clear();
9039 myLastCreatedNodes.Clear();
9041 SMDS_ElemIteratorPtr invElemIt = theBetweenNode1->GetInverseElementIterator(SMDSAbs_Volume);
9042 while (invElemIt->more()) { // loop on inverse elements of theBetweenNode1
9043 const SMDS_MeshElement* elem = invElemIt->next();
9045 // check, if current volume has link theBetweenNode1 - theBetweenNode2
9046 SMDS_VolumeTool aVolume (elem);
9047 if (!aVolume.IsLinked(theBetweenNode1, theBetweenNode2))
9050 // insert new nodes in all faces of the volume, sharing link theBetweenNode1 - theBetweenNode2
9051 int iface, nbFaces = aVolume.NbFaces();
9052 vector<const SMDS_MeshNode *> poly_nodes;
9053 vector<int> quantities (nbFaces);
9055 for (iface = 0; iface < nbFaces; iface++) {
9056 int nbFaceNodes = aVolume.NbFaceNodes(iface), nbInserted = 0;
9057 // faceNodes will contain (nbFaceNodes + 1) nodes, last = first
9058 const SMDS_MeshNode** faceNodes = aVolume.GetFaceNodes(iface);
9060 for (int inode = 0; inode < nbFaceNodes; inode++) {
9061 poly_nodes.push_back(faceNodes[inode]);
9063 if (nbInserted == 0) {
9064 if (faceNodes[inode] == theBetweenNode1) {
9065 if (faceNodes[inode + 1] == theBetweenNode2) {
9066 nbInserted = theNodesToInsert.size();
9068 // add nodes to insert
9069 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.begin();
9070 for (; nIt != theNodesToInsert.end(); nIt++) {
9071 poly_nodes.push_back(*nIt);
9075 else if (faceNodes[inode] == theBetweenNode2) {
9076 if (faceNodes[inode + 1] == theBetweenNode1) {
9077 nbInserted = theNodesToInsert.size();
9079 // add nodes to insert in reversed order
9080 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.end();
9082 for (; nIt != theNodesToInsert.begin(); nIt--) {
9083 poly_nodes.push_back(*nIt);
9085 poly_nodes.push_back(*nIt);
9092 quantities[iface] = nbFaceNodes + nbInserted;
9095 // Replace the volume
9096 SMESHDS_Mesh *aMesh = GetMeshDS();
9098 if ( SMDS_MeshElement* newElem = aMesh->AddPolyhedralVolume( poly_nodes, quantities ))
9100 aMesh->SetMeshElementOnShape( newElem, elem->getshapeId() );
9101 myLastCreatedElems.Append( newElem );
9102 ReplaceElemInGroups( elem, newElem, aMesh );
9104 aMesh->RemoveElement( elem );
9110 //================================================================================
9112 * \brief Transform any volume into data of SMDSEntity_Polyhedra
9114 //================================================================================
9116 void volumeToPolyhedron( const SMDS_MeshElement* elem,
9117 vector<const SMDS_MeshNode *> & nodes,
9118 vector<int> & nbNodeInFaces )
9121 nbNodeInFaces.clear();
9122 SMDS_VolumeTool vTool ( elem );
9123 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
9125 const SMDS_MeshNode** fNodes = vTool.GetFaceNodes( iF );
9126 nodes.insert( nodes.end(), fNodes, fNodes + vTool.NbFaceNodes( iF ));
9127 nbNodeInFaces.push_back( vTool.NbFaceNodes( iF ));
9132 //=======================================================================
9134 * \brief Convert elements contained in a sub-mesh to quadratic
9135 * \return int - nb of checked elements
9137 //=======================================================================
9139 int SMESH_MeshEditor::convertElemToQuadratic(SMESHDS_SubMesh * theSm,
9140 SMESH_MesherHelper& theHelper,
9141 const bool theForce3d)
9144 if( !theSm ) return nbElem;
9146 vector<int> nbNodeInFaces;
9147 vector<const SMDS_MeshNode *> nodes;
9148 SMDS_ElemIteratorPtr ElemItr = theSm->GetElements();
9149 while(ElemItr->more())
9152 const SMDS_MeshElement* elem = ElemItr->next();
9153 if( !elem ) continue;
9155 // analyse a necessity of conversion
9156 const SMDSAbs_ElementType aType = elem->GetType();
9157 if ( aType < SMDSAbs_Edge || aType > SMDSAbs_Volume )
9159 const SMDSAbs_EntityType aGeomType = elem->GetEntityType();
9160 bool hasCentralNodes = false;
9161 if ( elem->IsQuadratic() )
9164 switch ( aGeomType ) {
9165 case SMDSEntity_Quad_Triangle:
9166 case SMDSEntity_Quad_Quadrangle:
9167 case SMDSEntity_Quad_Hexa:
9168 alreadyOK = !theHelper.GetIsBiQuadratic(); break;
9170 case SMDSEntity_BiQuad_Triangle:
9171 case SMDSEntity_BiQuad_Quadrangle:
9172 case SMDSEntity_TriQuad_Hexa:
9173 alreadyOK = theHelper.GetIsBiQuadratic();
9174 hasCentralNodes = true;
9179 // take into account already present modium nodes
9181 case SMDSAbs_Volume:
9182 theHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( elem )); break;
9184 theHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( elem )); break;
9186 theHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( elem )); break;
9192 // get elem data needed to re-create it
9194 const int id = elem->GetID();
9195 const int nbNodes = elem->NbCornerNodes();
9196 nodes.assign(elem->begin_nodes(), elem->end_nodes());
9197 if ( aGeomType == SMDSEntity_Polyhedra )
9198 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >( elem )->GetQuantities();
9199 else if ( aGeomType == SMDSEntity_Hexagonal_Prism )
9200 volumeToPolyhedron( elem, nodes, nbNodeInFaces );
9202 // remove a linear element
9203 GetMeshDS()->RemoveFreeElement(elem, theSm, /*fromGroups=*/false);
9205 // remove central nodes of biquadratic elements (biquad->quad conversion)
9206 if ( hasCentralNodes )
9207 for ( size_t i = nbNodes * 2; i < nodes.size(); ++i )
9208 if ( nodes[i]->NbInverseElements() == 0 )
9209 GetMeshDS()->RemoveFreeNode( nodes[i], theSm, /*fromGroups=*/true );
9211 const SMDS_MeshElement* NewElem = 0;
9217 NewElem = theHelper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9225 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9228 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9231 NewElem = theHelper.AddPolygonalFace(nodes, id, theForce3d);
9235 case SMDSAbs_Volume :
9239 case SMDSEntity_Tetra:
9240 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9242 case SMDSEntity_Pyramid:
9243 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], id, theForce3d);
9245 case SMDSEntity_Penta:
9246 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], nodes[5], id, theForce3d);
9248 case SMDSEntity_Hexa:
9249 case SMDSEntity_Quad_Hexa:
9250 case SMDSEntity_TriQuad_Hexa:
9251 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9252 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9254 case SMDSEntity_Hexagonal_Prism:
9256 NewElem = theHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9263 ReplaceElemInGroups( elem, NewElem, GetMeshDS());
9264 if( NewElem && NewElem->getshapeId() < 1 )
9265 theSm->AddElement( NewElem );
9269 //=======================================================================
9270 //function : ConvertToQuadratic
9272 //=======================================================================
9274 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d, const bool theToBiQuad)
9276 SMESHDS_Mesh* meshDS = GetMeshDS();
9278 SMESH_MesherHelper aHelper(*myMesh);
9280 aHelper.SetIsQuadratic( true );
9281 aHelper.SetIsBiQuadratic( theToBiQuad );
9282 aHelper.SetElementsOnShape(true);
9283 aHelper.ToFixNodeParameters( true );
9285 // convert elements assigned to sub-meshes
9286 int nbCheckedElems = 0;
9287 if ( myMesh->HasShapeToMesh() )
9289 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9291 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9292 while ( smIt->more() ) {
9293 SMESH_subMesh* sm = smIt->next();
9294 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() ) {
9295 aHelper.SetSubShape( sm->GetSubShape() );
9296 nbCheckedElems += convertElemToQuadratic(smDS, aHelper, theForce3d);
9302 // convert elements NOT assigned to sub-meshes
9303 int totalNbElems = meshDS->NbEdges() + meshDS->NbFaces() + meshDS->NbVolumes();
9304 if ( nbCheckedElems < totalNbElems ) // not all elements are in sub-meshes
9306 aHelper.SetElementsOnShape(false);
9307 SMESHDS_SubMesh *smDS = 0;
9310 SMDS_EdgeIteratorPtr aEdgeItr = meshDS->edgesIterator();
9311 while( aEdgeItr->more() )
9313 const SMDS_MeshEdge* edge = aEdgeItr->next();
9314 if ( !edge->IsQuadratic() )
9316 int id = edge->GetID();
9317 const SMDS_MeshNode* n1 = edge->GetNode(0);
9318 const SMDS_MeshNode* n2 = edge->GetNode(1);
9320 meshDS->RemoveFreeElement(edge, smDS, /*fromGroups=*/false);
9322 const SMDS_MeshEdge* NewEdge = aHelper.AddEdge(n1, n2, id, theForce3d);
9323 ReplaceElemInGroups( edge, NewEdge, GetMeshDS());
9327 aHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( edge ));
9332 SMDS_FaceIteratorPtr aFaceItr = meshDS->facesIterator();
9333 while( aFaceItr->more() )
9335 const SMDS_MeshFace* face = aFaceItr->next();
9336 if ( !face ) continue;
9338 const SMDSAbs_EntityType type = face->GetEntityType();
9342 case SMDSEntity_Quad_Triangle:
9343 case SMDSEntity_Quad_Quadrangle:
9344 alreadyOK = !theToBiQuad;
9345 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9347 case SMDSEntity_BiQuad_Triangle:
9348 case SMDSEntity_BiQuad_Quadrangle:
9349 alreadyOK = theToBiQuad;
9350 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9352 default: alreadyOK = false;
9357 const int id = face->GetID();
9358 vector<const SMDS_MeshNode *> nodes ( face->begin_nodes(), face->end_nodes());
9360 meshDS->RemoveFreeElement(face, smDS, /*fromGroups=*/false);
9362 SMDS_MeshFace * NewFace = 0;
9365 case SMDSEntity_Triangle:
9366 case SMDSEntity_Quad_Triangle:
9367 case SMDSEntity_BiQuad_Triangle:
9368 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9369 if ( nodes.size() == 7 && nodes[6]->NbInverseElements() == 0 ) // rm a central node
9370 GetMeshDS()->RemoveFreeNode( nodes[6], /*sm=*/0, /*fromGroups=*/true );
9373 case SMDSEntity_Quadrangle:
9374 case SMDSEntity_Quad_Quadrangle:
9375 case SMDSEntity_BiQuad_Quadrangle:
9376 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9377 if ( nodes.size() == 9 && nodes[8]->NbInverseElements() == 0 ) // rm a central node
9378 GetMeshDS()->RemoveFreeNode( nodes[8], /*sm=*/0, /*fromGroups=*/true );
9382 NewFace = aHelper.AddPolygonalFace(nodes, id, theForce3d);
9384 ReplaceElemInGroups( face, NewFace, GetMeshDS());
9388 vector<int> nbNodeInFaces;
9389 SMDS_VolumeIteratorPtr aVolumeItr = meshDS->volumesIterator();
9390 while(aVolumeItr->more())
9392 const SMDS_MeshVolume* volume = aVolumeItr->next();
9393 if ( !volume ) continue;
9395 const SMDSAbs_EntityType type = volume->GetEntityType();
9396 if ( volume->IsQuadratic() )
9401 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9402 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9403 default: alreadyOK = true;
9407 aHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( volume ));
9411 const int id = volume->GetID();
9412 vector<const SMDS_MeshNode *> nodes (volume->begin_nodes(), volume->end_nodes());
9413 if ( type == SMDSEntity_Polyhedra )
9414 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >(volume)->GetQuantities();
9415 else if ( type == SMDSEntity_Hexagonal_Prism )
9416 volumeToPolyhedron( volume, nodes, nbNodeInFaces );
9418 meshDS->RemoveFreeElement(volume, smDS, /*fromGroups=*/false);
9420 SMDS_MeshVolume * NewVolume = 0;
9423 case SMDSEntity_Tetra:
9424 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d );
9426 case SMDSEntity_Hexa:
9427 case SMDSEntity_Quad_Hexa:
9428 case SMDSEntity_TriQuad_Hexa:
9429 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9430 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9431 for ( size_t i = 20; i < nodes.size(); ++i ) // rm central nodes
9432 if ( nodes[i]->NbInverseElements() == 0 )
9433 GetMeshDS()->RemoveFreeNode( nodes[i], /*sm=*/0, /*fromGroups=*/true );
9435 case SMDSEntity_Pyramid:
9436 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9437 nodes[3], nodes[4], id, theForce3d);
9439 case SMDSEntity_Penta:
9440 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9441 nodes[3], nodes[4], nodes[5], id, theForce3d);
9443 case SMDSEntity_Hexagonal_Prism:
9445 NewVolume = aHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9447 ReplaceElemInGroups(volume, NewVolume, meshDS);
9452 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9453 // aHelper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9454 // aHelper.FixQuadraticElements(myError);
9455 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9459 //================================================================================
9461 * \brief Makes given elements quadratic
9462 * \param theForce3d - if true, the medium nodes will be placed in the middle of link
9463 * \param theElements - elements to make quadratic
9465 //================================================================================
9467 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d,
9468 TIDSortedElemSet& theElements,
9469 const bool theToBiQuad)
9471 if ( theElements.empty() ) return;
9473 // we believe that all theElements are of the same type
9474 const SMDSAbs_ElementType elemType = (*theElements.begin())->GetType();
9476 // get all nodes shared by theElements
9477 TIDSortedNodeSet allNodes;
9478 TIDSortedElemSet::iterator eIt = theElements.begin();
9479 for ( ; eIt != theElements.end(); ++eIt )
9480 allNodes.insert( (*eIt)->begin_nodes(), (*eIt)->end_nodes() );
9482 // complete theElements with elements of lower dim whose all nodes are in allNodes
9484 TIDSortedElemSet quadAdjacentElems [ SMDSAbs_NbElementTypes ]; // quadratic adjacent elements
9485 TIDSortedElemSet checkedAdjacentElems [ SMDSAbs_NbElementTypes ];
9486 TIDSortedNodeSet::iterator nIt = allNodes.begin();
9487 for ( ; nIt != allNodes.end(); ++nIt )
9489 const SMDS_MeshNode* n = *nIt;
9490 SMDS_ElemIteratorPtr invIt = n->GetInverseElementIterator();
9491 while ( invIt->more() )
9493 const SMDS_MeshElement* e = invIt->next();
9494 const SMDSAbs_ElementType type = e->GetType();
9495 if ( e->IsQuadratic() )
9497 quadAdjacentElems[ type ].insert( e );
9500 switch ( e->GetEntityType() ) {
9501 case SMDSEntity_Quad_Triangle:
9502 case SMDSEntity_Quad_Quadrangle:
9503 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9504 case SMDSEntity_BiQuad_Triangle:
9505 case SMDSEntity_BiQuad_Quadrangle:
9506 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9507 default: alreadyOK = true;
9512 if ( type >= elemType )
9513 continue; // same type or more complex linear element
9515 if ( !checkedAdjacentElems[ type ].insert( e ).second )
9516 continue; // e is already checked
9520 SMDS_NodeIteratorPtr nodeIt = e->nodeIterator();
9521 while ( nodeIt->more() && allIn )
9522 allIn = allNodes.count( nodeIt->next() );
9524 theElements.insert(e );
9528 SMESH_MesherHelper helper(*myMesh);
9529 helper.SetIsQuadratic( true );
9530 helper.SetIsBiQuadratic( theToBiQuad );
9532 // add links of quadratic adjacent elements to the helper
9534 if ( !quadAdjacentElems[SMDSAbs_Edge].empty() )
9535 for ( eIt = quadAdjacentElems[SMDSAbs_Edge].begin();
9536 eIt != quadAdjacentElems[SMDSAbs_Edge].end(); ++eIt )
9538 helper.AddTLinks( static_cast< const SMDS_MeshEdge*> (*eIt) );
9540 if ( !quadAdjacentElems[SMDSAbs_Face].empty() )
9541 for ( eIt = quadAdjacentElems[SMDSAbs_Face].begin();
9542 eIt != quadAdjacentElems[SMDSAbs_Face].end(); ++eIt )
9544 helper.AddTLinks( static_cast< const SMDS_MeshFace*> (*eIt) );
9546 if ( !quadAdjacentElems[SMDSAbs_Volume].empty() )
9547 for ( eIt = quadAdjacentElems[SMDSAbs_Volume].begin();
9548 eIt != quadAdjacentElems[SMDSAbs_Volume].end(); ++eIt )
9550 helper.AddTLinks( static_cast< const SMDS_MeshVolume*> (*eIt) );
9553 // make quadratic (or bi-tri-quadratic) elements instead of linear ones
9555 SMESHDS_Mesh* meshDS = GetMeshDS();
9556 SMESHDS_SubMesh* smDS = 0;
9557 for ( eIt = theElements.begin(); eIt != theElements.end(); ++eIt )
9559 const SMDS_MeshElement* elem = *eIt;
9562 int nbCentralNodes = 0;
9563 switch ( elem->GetEntityType() ) {
9564 // linear convertible
9565 case SMDSEntity_Edge:
9566 case SMDSEntity_Triangle:
9567 case SMDSEntity_Quadrangle:
9568 case SMDSEntity_Tetra:
9569 case SMDSEntity_Pyramid:
9570 case SMDSEntity_Hexa:
9571 case SMDSEntity_Penta: alreadyOK = false; nbCentralNodes = 0; break;
9572 // quadratic that can become bi-quadratic
9573 case SMDSEntity_Quad_Triangle:
9574 case SMDSEntity_Quad_Quadrangle:
9575 case SMDSEntity_Quad_Hexa: alreadyOK =!theToBiQuad; nbCentralNodes = 0; break;
9577 case SMDSEntity_BiQuad_Triangle:
9578 case SMDSEntity_BiQuad_Quadrangle: alreadyOK = theToBiQuad; nbCentralNodes = 1; break;
9579 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; nbCentralNodes = 7; break;
9581 default: alreadyOK = true;
9583 if ( alreadyOK ) continue;
9585 const SMDSAbs_ElementType type = elem->GetType();
9586 const int id = elem->GetID();
9587 const int nbNodes = elem->NbCornerNodes();
9588 vector<const SMDS_MeshNode *> nodes ( elem->begin_nodes(), elem->end_nodes());
9590 helper.SetSubShape( elem->getshapeId() );
9592 if ( !smDS || !smDS->Contains( elem ))
9593 smDS = meshDS->MeshElements( elem->getshapeId() );
9594 meshDS->RemoveFreeElement(elem, smDS, /*fromGroups=*/false);
9596 SMDS_MeshElement * newElem = 0;
9599 case 4: // cases for most frequently used element types go first (for optimization)
9600 if ( type == SMDSAbs_Volume )
9601 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9603 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9606 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9607 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9610 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], id, theForce3d);
9613 newElem = helper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9616 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9617 nodes[4], id, theForce3d);
9620 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9621 nodes[4], nodes[5], id, theForce3d);
9625 ReplaceElemInGroups( elem, newElem, meshDS);
9626 if( newElem && smDS )
9627 smDS->AddElement( newElem );
9629 // remove central nodes
9630 for ( size_t i = nodes.size() - nbCentralNodes; i < nodes.size(); ++i )
9631 if ( nodes[i]->NbInverseElements() == 0 )
9632 meshDS->RemoveFreeNode( nodes[i], smDS, /*fromGroups=*/true );
9634 } // loop on theElements
9637 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9638 // helper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9639 // helper.FixQuadraticElements( myError );
9640 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9644 //=======================================================================
9646 * \brief Convert quadratic elements to linear ones and remove quadratic nodes
9647 * \return int - nb of checked elements
9649 //=======================================================================
9651 int SMESH_MeshEditor::removeQuadElem(SMESHDS_SubMesh * theSm,
9652 SMDS_ElemIteratorPtr theItr,
9653 const int theShapeID)
9656 SMESHDS_Mesh* meshDS = GetMeshDS();
9657 ElemFeatures elemType;
9658 vector<const SMDS_MeshNode *> nodes;
9660 while( theItr->more() )
9662 const SMDS_MeshElement* elem = theItr->next();
9664 if( elem && elem->IsQuadratic())
9667 int nbCornerNodes = elem->NbCornerNodes();
9668 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
9670 elemType.Init( elem, /*basicOnly=*/false ).SetID( elem->GetID() ).SetQuad( false );
9672 //remove a quadratic element
9673 if ( !theSm || !theSm->Contains( elem ))
9674 theSm = meshDS->MeshElements( elem->getshapeId() );
9675 meshDS->RemoveFreeElement( elem, theSm, /*fromGroups=*/false );
9677 // remove medium nodes
9678 for ( size_t i = nbCornerNodes; i < nodes.size(); ++i )
9679 if ( nodes[i]->NbInverseElements() == 0 )
9680 meshDS->RemoveFreeNode( nodes[i], theSm );
9682 // add a linear element
9683 nodes.resize( nbCornerNodes );
9684 SMDS_MeshElement * newElem = AddElement( nodes, elemType );
9685 ReplaceElemInGroups(elem, newElem, meshDS);
9686 if( theSm && newElem )
9687 theSm->AddElement( newElem );
9693 //=======================================================================
9694 //function : ConvertFromQuadratic
9696 //=======================================================================
9698 bool SMESH_MeshEditor::ConvertFromQuadratic()
9700 int nbCheckedElems = 0;
9701 if ( myMesh->HasShapeToMesh() )
9703 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9705 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9706 while ( smIt->more() ) {
9707 SMESH_subMesh* sm = smIt->next();
9708 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() )
9709 nbCheckedElems += removeQuadElem( smDS, smDS->GetElements(), sm->GetId() );
9715 GetMeshDS()->NbEdges() + GetMeshDS()->NbFaces() + GetMeshDS()->NbVolumes();
9716 if ( nbCheckedElems < totalNbElems ) // not all elements are in submeshes
9718 SMESHDS_SubMesh *aSM = 0;
9719 removeQuadElem( aSM, GetMeshDS()->elementsIterator(), 0 );
9727 //================================================================================
9729 * \brief Return true if all medium nodes of the element are in the node set
9731 //================================================================================
9733 bool allMediumNodesIn(const SMDS_MeshElement* elem, TIDSortedNodeSet& nodeSet )
9735 for ( int i = elem->NbCornerNodes(); i < elem->NbNodes(); ++i )
9736 if ( !nodeSet.count( elem->GetNode(i) ))
9742 //================================================================================
9744 * \brief Makes given elements linear
9746 //================================================================================
9748 void SMESH_MeshEditor::ConvertFromQuadratic(TIDSortedElemSet& theElements)
9750 if ( theElements.empty() ) return;
9752 // collect IDs of medium nodes of theElements; some of these nodes will be removed
9753 set<int> mediumNodeIDs;
9754 TIDSortedElemSet::iterator eIt = theElements.begin();
9755 for ( ; eIt != theElements.end(); ++eIt )
9757 const SMDS_MeshElement* e = *eIt;
9758 for ( int i = e->NbCornerNodes(); i < e->NbNodes(); ++i )
9759 mediumNodeIDs.insert( e->GetNode(i)->GetID() );
9762 // replace given elements by linear ones
9763 SMDS_ElemIteratorPtr elemIt = elemSetIterator( theElements );
9764 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9766 // we need to convert remaining elements whose all medium nodes are in mediumNodeIDs
9767 // except those elements sharing medium nodes of quadratic element whose medium nodes
9768 // are not all in mediumNodeIDs
9770 // get remaining medium nodes
9771 TIDSortedNodeSet mediumNodes;
9772 set<int>::iterator nIdsIt = mediumNodeIDs.begin();
9773 for ( ; nIdsIt != mediumNodeIDs.end(); ++nIdsIt )
9774 if ( const SMDS_MeshNode* n = GetMeshDS()->FindNode( *nIdsIt ))
9775 mediumNodes.insert( mediumNodes.end(), n );
9777 // find more quadratic elements to convert
9778 TIDSortedElemSet moreElemsToConvert;
9779 TIDSortedNodeSet::iterator nIt = mediumNodes.begin();
9780 for ( ; nIt != mediumNodes.end(); ++nIt )
9782 SMDS_ElemIteratorPtr invIt = (*nIt)->GetInverseElementIterator();
9783 while ( invIt->more() )
9785 const SMDS_MeshElement* e = invIt->next();
9786 if ( e->IsQuadratic() && allMediumNodesIn( e, mediumNodes ))
9788 // find a more complex element including e and
9789 // whose medium nodes are not in mediumNodes
9790 bool complexFound = false;
9791 for ( int type = e->GetType() + 1; type < SMDSAbs_0DElement; ++type )
9793 SMDS_ElemIteratorPtr invIt2 =
9794 (*nIt)->GetInverseElementIterator( SMDSAbs_ElementType( type ));
9795 while ( invIt2->more() )
9797 const SMDS_MeshElement* eComplex = invIt2->next();
9798 if ( eComplex->IsQuadratic() && !allMediumNodesIn( eComplex, mediumNodes))
9800 int nbCommonNodes = SMESH_MeshAlgos::GetCommonNodes( e, eComplex ).size();
9801 if ( nbCommonNodes == e->NbNodes())
9803 complexFound = true;
9804 type = SMDSAbs_NbElementTypes; // to quit from the outer loop
9810 if ( !complexFound )
9811 moreElemsToConvert.insert( e );
9815 elemIt = elemSetIterator( moreElemsToConvert );
9816 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9819 //=======================================================================
9820 //function : SewSideElements
9822 //=======================================================================
9824 SMESH_MeshEditor::Sew_Error
9825 SMESH_MeshEditor::SewSideElements (TIDSortedElemSet& theSide1,
9826 TIDSortedElemSet& theSide2,
9827 const SMDS_MeshNode* theFirstNode1,
9828 const SMDS_MeshNode* theFirstNode2,
9829 const SMDS_MeshNode* theSecondNode1,
9830 const SMDS_MeshNode* theSecondNode2)
9832 myLastCreatedElems.Clear();
9833 myLastCreatedNodes.Clear();
9835 if ( theSide1.size() != theSide2.size() )
9836 return SEW_DIFF_NB_OF_ELEMENTS;
9838 Sew_Error aResult = SEW_OK;
9840 // 1. Build set of faces representing each side
9841 // 2. Find which nodes of the side 1 to merge with ones on the side 2
9842 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
9844 // =======================================================================
9845 // 1. Build set of faces representing each side:
9846 // =======================================================================
9847 // a. build set of nodes belonging to faces
9848 // b. complete set of faces: find missing faces whose nodes are in set of nodes
9849 // c. create temporary faces representing side of volumes if correspondent
9850 // face does not exist
9852 SMESHDS_Mesh* aMesh = GetMeshDS();
9853 // TODO algorithm not OK with vtkUnstructuredGrid: 2 meshes can't share nodes
9854 //SMDS_Mesh aTmpFacesMesh; // try to use the same mesh
9855 TIDSortedElemSet faceSet1, faceSet2;
9856 set<const SMDS_MeshElement*> volSet1, volSet2;
9857 set<const SMDS_MeshNode*> nodeSet1, nodeSet2;
9858 TIDSortedElemSet * faceSetPtr[] = { &faceSet1, &faceSet2 };
9859 set<const SMDS_MeshElement*> * volSetPtr[] = { &volSet1, &volSet2 };
9860 set<const SMDS_MeshNode*> * nodeSetPtr[] = { &nodeSet1, &nodeSet2 };
9861 TIDSortedElemSet * elemSetPtr[] = { &theSide1, &theSide2 };
9862 int iSide, iFace, iNode;
9864 list<const SMDS_MeshElement* > tempFaceList;
9865 for ( iSide = 0; iSide < 2; iSide++ ) {
9866 set<const SMDS_MeshNode*> * nodeSet = nodeSetPtr[ iSide ];
9867 TIDSortedElemSet * elemSet = elemSetPtr[ iSide ];
9868 TIDSortedElemSet * faceSet = faceSetPtr[ iSide ];
9869 set<const SMDS_MeshElement*> * volSet = volSetPtr [ iSide ];
9870 set<const SMDS_MeshElement*>::iterator vIt;
9871 TIDSortedElemSet::iterator eIt;
9872 set<const SMDS_MeshNode*>::iterator nIt;
9874 // check that given nodes belong to given elements
9875 const SMDS_MeshNode* n1 = ( iSide == 0 ) ? theFirstNode1 : theFirstNode2;
9876 const SMDS_MeshNode* n2 = ( iSide == 0 ) ? theSecondNode1 : theSecondNode2;
9877 int firstIndex = -1, secondIndex = -1;
9878 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9879 const SMDS_MeshElement* elem = *eIt;
9880 if ( firstIndex < 0 ) firstIndex = elem->GetNodeIndex( n1 );
9881 if ( secondIndex < 0 ) secondIndex = elem->GetNodeIndex( n2 );
9882 if ( firstIndex > -1 && secondIndex > -1 ) break;
9884 if ( firstIndex < 0 || secondIndex < 0 ) {
9885 // we can simply return until temporary faces created
9886 return (iSide == 0 ) ? SEW_BAD_SIDE1_NODES : SEW_BAD_SIDE2_NODES;
9889 // -----------------------------------------------------------
9890 // 1a. Collect nodes of existing faces
9891 // and build set of face nodes in order to detect missing
9892 // faces corresponding to sides of volumes
9893 // -----------------------------------------------------------
9895 set< set <const SMDS_MeshNode*> > setOfFaceNodeSet;
9897 // loop on the given element of a side
9898 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9899 //const SMDS_MeshElement* elem = *eIt;
9900 const SMDS_MeshElement* elem = *eIt;
9901 if ( elem->GetType() == SMDSAbs_Face ) {
9902 faceSet->insert( elem );
9903 set <const SMDS_MeshNode*> faceNodeSet;
9904 SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
9905 while ( nodeIt->more() ) {
9906 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
9907 nodeSet->insert( n );
9908 faceNodeSet.insert( n );
9910 setOfFaceNodeSet.insert( faceNodeSet );
9912 else if ( elem->GetType() == SMDSAbs_Volume )
9913 volSet->insert( elem );
9915 // ------------------------------------------------------------------------------
9916 // 1b. Complete set of faces: find missing faces whose nodes are in set of nodes
9917 // ------------------------------------------------------------------------------
9919 for ( nIt = nodeSet->begin(); nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
9920 SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
9921 while ( fIt->more() ) { // loop on faces sharing a node
9922 const SMDS_MeshElement* f = fIt->next();
9923 if ( faceSet->find( f ) == faceSet->end() ) {
9924 // check if all nodes are in nodeSet and
9925 // complete setOfFaceNodeSet if they are
9926 set <const SMDS_MeshNode*> faceNodeSet;
9927 SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
9928 bool allInSet = true;
9929 while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
9930 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
9931 if ( nodeSet->find( n ) == nodeSet->end() )
9934 faceNodeSet.insert( n );
9937 faceSet->insert( f );
9938 setOfFaceNodeSet.insert( faceNodeSet );
9944 // -------------------------------------------------------------------------
9945 // 1c. Create temporary faces representing sides of volumes if correspondent
9946 // face does not exist
9947 // -------------------------------------------------------------------------
9949 if ( !volSet->empty() ) {
9950 //int nodeSetSize = nodeSet->size();
9952 // loop on given volumes
9953 for ( vIt = volSet->begin(); vIt != volSet->end(); vIt++ ) {
9954 SMDS_VolumeTool vol (*vIt);
9955 // loop on volume faces: find free faces
9956 // --------------------------------------
9957 list<const SMDS_MeshElement* > freeFaceList;
9958 for ( iFace = 0; iFace < vol.NbFaces(); iFace++ ) {
9959 if ( !vol.IsFreeFace( iFace ))
9961 // check if there is already a face with same nodes in a face set
9962 const SMDS_MeshElement* aFreeFace = 0;
9963 const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iFace );
9964 int nbNodes = vol.NbFaceNodes( iFace );
9965 set <const SMDS_MeshNode*> faceNodeSet;
9966 vol.GetFaceNodes( iFace, faceNodeSet );
9967 bool isNewFace = setOfFaceNodeSet.insert( faceNodeSet ).second;
9969 // no such a face is given but it still can exist, check it
9970 vector<const SMDS_MeshNode *> nodes ( fNodes, fNodes + nbNodes);
9971 aFreeFace = aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false );
9974 // create a temporary face
9975 if ( nbNodes == 3 ) {
9976 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2] );
9977 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2] );
9979 else if ( nbNodes == 4 ) {
9980 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
9981 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
9984 vector<const SMDS_MeshNode *> poly_nodes ( fNodes, & fNodes[nbNodes]);
9985 //aFreeFace = aTmpFacesMesh.AddPolygonalFace(poly_nodes);
9986 aFreeFace = aMesh->AddPolygonalFace(poly_nodes);
9989 tempFaceList.push_back( aFreeFace );
9993 freeFaceList.push_back( aFreeFace );
9995 } // loop on faces of a volume
9997 // choose one of several free faces of a volume
9998 // --------------------------------------------
9999 if ( freeFaceList.size() > 1 ) {
10000 // choose a face having max nb of nodes shared by other elems of a side
10001 int maxNbNodes = -1;
10002 list<const SMDS_MeshElement* >::iterator fIt = freeFaceList.begin();
10003 while ( fIt != freeFaceList.end() ) { // loop on free faces
10004 int nbSharedNodes = 0;
10005 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10006 while ( nodeIt->more() ) { // loop on free face nodes
10007 const SMDS_MeshNode* n =
10008 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10009 SMDS_ElemIteratorPtr invElemIt = n->GetInverseElementIterator();
10010 while ( invElemIt->more() ) {
10011 const SMDS_MeshElement* e = invElemIt->next();
10012 nbSharedNodes += faceSet->count( e );
10013 nbSharedNodes += elemSet->count( e );
10016 if ( nbSharedNodes > maxNbNodes ) {
10017 maxNbNodes = nbSharedNodes;
10018 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10020 else if ( nbSharedNodes == maxNbNodes ) {
10024 freeFaceList.erase( fIt++ ); // here fIt++ occurs before erase
10027 if ( freeFaceList.size() > 1 )
10029 // could not choose one face, use another way
10030 // choose a face most close to the bary center of the opposite side
10031 gp_XYZ aBC( 0., 0., 0. );
10032 set <const SMDS_MeshNode*> addedNodes;
10033 TIDSortedElemSet * elemSet2 = elemSetPtr[ 1 - iSide ];
10034 eIt = elemSet2->begin();
10035 for ( eIt = elemSet2->begin(); eIt != elemSet2->end(); eIt++ ) {
10036 SMDS_ElemIteratorPtr nodeIt = (*eIt)->nodesIterator();
10037 while ( nodeIt->more() ) { // loop on free face nodes
10038 const SMDS_MeshNode* n =
10039 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10040 if ( addedNodes.insert( n ).second )
10041 aBC += gp_XYZ( n->X(),n->Y(),n->Z() );
10044 aBC /= addedNodes.size();
10045 double minDist = DBL_MAX;
10046 fIt = freeFaceList.begin();
10047 while ( fIt != freeFaceList.end() ) { // loop on free faces
10049 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10050 while ( nodeIt->more() ) { // loop on free face nodes
10051 const SMDS_MeshNode* n =
10052 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10053 gp_XYZ p( n->X(),n->Y(),n->Z() );
10054 dist += ( aBC - p ).SquareModulus();
10056 if ( dist < minDist ) {
10058 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10061 fIt = freeFaceList.erase( fIt++ );
10064 } // choose one of several free faces of a volume
10066 if ( freeFaceList.size() == 1 ) {
10067 const SMDS_MeshElement* aFreeFace = freeFaceList.front();
10068 faceSet->insert( aFreeFace );
10069 // complete a node set with nodes of a found free face
10070 // for ( iNode = 0; iNode < ; iNode++ )
10071 // nodeSet->insert( fNodes[ iNode ] );
10074 } // loop on volumes of a side
10076 // // complete a set of faces if new nodes in a nodeSet appeared
10077 // // ----------------------------------------------------------
10078 // if ( nodeSetSize != nodeSet->size() ) {
10079 // for ( ; nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
10080 // SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
10081 // while ( fIt->more() ) { // loop on faces sharing a node
10082 // const SMDS_MeshElement* f = fIt->next();
10083 // if ( faceSet->find( f ) == faceSet->end() ) {
10084 // // check if all nodes are in nodeSet and
10085 // // complete setOfFaceNodeSet if they are
10086 // set <const SMDS_MeshNode*> faceNodeSet;
10087 // SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
10088 // bool allInSet = true;
10089 // while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
10090 // const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10091 // if ( nodeSet->find( n ) == nodeSet->end() )
10092 // allInSet = false;
10094 // faceNodeSet.insert( n );
10096 // if ( allInSet ) {
10097 // faceSet->insert( f );
10098 // setOfFaceNodeSet.insert( faceNodeSet );
10104 } // Create temporary faces, if there are volumes given
10107 if ( faceSet1.size() != faceSet2.size() ) {
10108 // delete temporary faces: they are in reverseElements of actual nodes
10109 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10110 // while ( tmpFaceIt->more() )
10111 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10112 // list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10113 // for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10114 // aMesh->RemoveElement(*tmpFaceIt);
10115 MESSAGE("Diff nb of faces");
10116 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10119 // ============================================================
10120 // 2. Find nodes to merge:
10121 // bind a node to remove to a node to put instead
10122 // ============================================================
10124 TNodeNodeMap nReplaceMap; // bind a node to remove to a node to put instead
10125 if ( theFirstNode1 != theFirstNode2 )
10126 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10127 if ( theSecondNode1 != theSecondNode2 )
10128 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10130 LinkID_Gen aLinkID_Gen( GetMeshDS() );
10131 set< long > linkIdSet; // links to process
10132 linkIdSet.insert( aLinkID_Gen.GetLinkID( theFirstNode1, theSecondNode1 ));
10134 typedef pair< const SMDS_MeshNode*, const SMDS_MeshNode* > NLink;
10135 list< NLink > linkList[2];
10136 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10137 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10138 // loop on links in linkList; find faces by links and append links
10139 // of the found faces to linkList
10140 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10141 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ )
10143 NLink link[] = { *linkIt[0], *linkIt[1] };
10144 long linkID = aLinkID_Gen.GetLinkID( link[0].first, link[0].second );
10145 if ( !linkIdSet.count( linkID ) )
10148 // by links, find faces in the face sets,
10149 // and find indices of link nodes in the found faces;
10150 // in a face set, there is only one or no face sharing a link
10151 // ---------------------------------------------------------------
10153 const SMDS_MeshElement* face[] = { 0, 0 };
10154 vector<const SMDS_MeshNode*> fnodes[2];
10155 int iLinkNode[2][2];
10156 TIDSortedElemSet avoidSet;
10157 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10158 const SMDS_MeshNode* n1 = link[iSide].first;
10159 const SMDS_MeshNode* n2 = link[iSide].second;
10160 //cout << "Side " << iSide << " ";
10161 //cout << "L( " << n1->GetID() << ", " << n2->GetID() << " ) " << endl;
10162 // find a face by two link nodes
10163 face[ iSide ] = SMESH_MeshAlgos::FindFaceInSet( n1, n2,
10164 *faceSetPtr[ iSide ], avoidSet,
10165 &iLinkNode[iSide][0],
10166 &iLinkNode[iSide][1] );
10167 if ( face[ iSide ])
10169 //cout << " F " << face[ iSide]->GetID() <<endl;
10170 faceSetPtr[ iSide ]->erase( face[ iSide ]);
10171 // put face nodes to fnodes
10172 if ( face[ iSide ]->IsQuadratic() )
10174 // use interlaced nodes iterator
10175 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>( face[ iSide ]);
10176 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
10177 SMDS_ElemIteratorPtr nIter = F->interlacedNodesElemIterator();
10178 while ( nIter->more() )
10179 fnodes[ iSide ].push_back( cast2Node( nIter->next() ));
10183 fnodes[ iSide ].assign( face[ iSide ]->begin_nodes(),
10184 face[ iSide ]->end_nodes() );
10186 fnodes[ iSide ].push_back( fnodes[ iSide ].front());
10190 // check similarity of elements of the sides
10191 if (aResult == SEW_OK && (( face[0] && !face[1] ) || ( !face[0] && face[1] ))) {
10192 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10193 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10194 aResult = ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10197 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10199 break; // do not return because it's necessary to remove tmp faces
10202 // set nodes to merge
10203 // -------------------
10205 if ( face[0] && face[1] ) {
10206 const int nbNodes = face[0]->NbNodes();
10207 if ( nbNodes != face[1]->NbNodes() ) {
10208 MESSAGE("Diff nb of face nodes");
10209 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10210 break; // do not return because it s necessary to remove tmp faces
10212 bool reverse[] = { false, false }; // order of nodes in the link
10213 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10214 // analyse link orientation in faces
10215 int i1 = iLinkNode[ iSide ][ 0 ];
10216 int i2 = iLinkNode[ iSide ][ 1 ];
10217 reverse[ iSide ] = Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1;
10219 int di1 = reverse[0] ? -1 : +1, i1 = iLinkNode[0][1] + di1;
10220 int di2 = reverse[1] ? -1 : +1, i2 = iLinkNode[1][1] + di2;
10221 for ( int i = nbNodes - 2; i > 0; --i, i1 += di1, i2 += di2 )
10223 nReplaceMap.insert ( make_pair ( fnodes[0][ ( i1 + nbNodes ) % nbNodes ],
10224 fnodes[1][ ( i2 + nbNodes ) % nbNodes ]));
10227 // add other links of the faces to linkList
10228 // -----------------------------------------
10230 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
10231 linkID = aLinkID_Gen.GetLinkID( fnodes[0][iNode], fnodes[0][iNode+1] );
10232 pair< set<long>::iterator, bool > iter_isnew = linkIdSet.insert( linkID );
10233 if ( !iter_isnew.second ) { // already in a set: no need to process
10234 linkIdSet.erase( iter_isnew.first );
10236 else // new in set == encountered for the first time: add
10238 const SMDS_MeshNode* n1 = fnodes[0][ iNode ];
10239 const SMDS_MeshNode* n2 = fnodes[0][ iNode + 1];
10240 linkList[0].push_back ( NLink( n1, n2 ));
10241 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10246 if ( faceSetPtr[0]->empty() || faceSetPtr[1]->empty() )
10249 } // loop on link lists
10251 if ( aResult == SEW_OK &&
10252 ( //linkIt[0] != linkList[0].end() ||
10253 !faceSetPtr[0]->empty() || !faceSetPtr[1]->empty() )) {
10254 MESSAGE( (linkIt[0] != linkList[0].end()) <<" "<< (faceSetPtr[0]->empty()) <<
10255 " " << (faceSetPtr[1]->empty()));
10256 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10259 // ====================================================================
10260 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
10261 // ====================================================================
10263 // delete temporary faces
10264 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10265 // while ( tmpFaceIt->more() )
10266 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10267 list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10268 for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10269 aMesh->RemoveElement(*tmpFaceIt);
10271 if ( aResult != SEW_OK)
10274 list< int > nodeIDsToRemove;
10275 vector< const SMDS_MeshNode*> nodes;
10276 ElemFeatures elemType;
10278 // loop on nodes replacement map
10279 TNodeNodeMap::iterator nReplaceMapIt = nReplaceMap.begin(), nnIt;
10280 for ( ; nReplaceMapIt != nReplaceMap.end(); nReplaceMapIt++ )
10281 if ( (*nReplaceMapIt).first != (*nReplaceMapIt).second )
10283 const SMDS_MeshNode* nToRemove = (*nReplaceMapIt).first;
10284 nodeIDsToRemove.push_back( nToRemove->GetID() );
10285 // loop on elements sharing nToRemove
10286 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
10287 while ( invElemIt->more() ) {
10288 const SMDS_MeshElement* e = invElemIt->next();
10289 // get a new suite of nodes: make replacement
10290 int nbReplaced = 0, i = 0, nbNodes = e->NbNodes();
10291 nodes.resize( nbNodes );
10292 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
10293 while ( nIt->more() ) {
10294 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
10295 nnIt = nReplaceMap.find( n );
10296 if ( nnIt != nReplaceMap.end() ) {
10298 n = (*nnIt).second;
10302 // if ( nbReplaced == nbNodes && e->GetType() == SMDSAbs_Face )
10303 // elemIDsToRemove.push_back( e->GetID() );
10307 elemType.Init( e, /*basicOnly=*/false ).SetID( e->GetID() );
10308 aMesh->RemoveElement( e );
10310 if ( SMDS_MeshElement* newElem = this->AddElement( nodes, elemType ))
10312 AddToSameGroups( newElem, e, aMesh );
10313 if ( int aShapeId = e->getshapeId() )
10314 aMesh->SetMeshElementOnShape( newElem, aShapeId );
10320 Remove( nodeIDsToRemove, true );
10325 //================================================================================
10327 * \brief Find corresponding nodes in two sets of faces
10328 * \param theSide1 - first face set
10329 * \param theSide2 - second first face
10330 * \param theFirstNode1 - a boundary node of set 1
10331 * \param theFirstNode2 - a node of set 2 corresponding to theFirstNode1
10332 * \param theSecondNode1 - a boundary node of set 1 linked with theFirstNode1
10333 * \param theSecondNode2 - a node of set 2 corresponding to theSecondNode1
10334 * \param nReplaceMap - output map of corresponding nodes
10335 * \return bool - is a success or not
10337 //================================================================================
10340 //#define DEBUG_MATCHING_NODES
10343 SMESH_MeshEditor::Sew_Error
10344 SMESH_MeshEditor::FindMatchingNodes(set<const SMDS_MeshElement*>& theSide1,
10345 set<const SMDS_MeshElement*>& theSide2,
10346 const SMDS_MeshNode* theFirstNode1,
10347 const SMDS_MeshNode* theFirstNode2,
10348 const SMDS_MeshNode* theSecondNode1,
10349 const SMDS_MeshNode* theSecondNode2,
10350 TNodeNodeMap & nReplaceMap)
10352 set<const SMDS_MeshElement*> * faceSetPtr[] = { &theSide1, &theSide2 };
10354 nReplaceMap.clear();
10355 if ( theFirstNode1 != theFirstNode2 )
10356 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10357 if ( theSecondNode1 != theSecondNode2 )
10358 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10360 set< SMESH_TLink > linkSet; // set of nodes where order of nodes is ignored
10361 linkSet.insert( SMESH_TLink( theFirstNode1, theSecondNode1 ));
10363 list< NLink > linkList[2];
10364 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10365 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10367 // loop on links in linkList; find faces by links and append links
10368 // of the found faces to linkList
10369 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10370 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ ) {
10371 NLink link[] = { *linkIt[0], *linkIt[1] };
10372 if ( linkSet.find( link[0] ) == linkSet.end() )
10375 // by links, find faces in the face sets,
10376 // and find indices of link nodes in the found faces;
10377 // in a face set, there is only one or no face sharing a link
10378 // ---------------------------------------------------------------
10380 const SMDS_MeshElement* face[] = { 0, 0 };
10381 list<const SMDS_MeshNode*> notLinkNodes[2];
10382 //bool reverse[] = { false, false }; // order of notLinkNodes
10384 for ( int iSide = 0; iSide < 2; iSide++ ) // loop on 2 sides
10386 const SMDS_MeshNode* n1 = link[iSide].first;
10387 const SMDS_MeshNode* n2 = link[iSide].second;
10388 set<const SMDS_MeshElement*> * faceSet = faceSetPtr[ iSide ];
10389 set< const SMDS_MeshElement* > facesOfNode1;
10390 for ( int iNode = 0; iNode < 2; iNode++ ) // loop on 2 nodes of a link
10392 // during a loop of the first node, we find all faces around n1,
10393 // during a loop of the second node, we find one face sharing both n1 and n2
10394 const SMDS_MeshNode* n = iNode ? n1 : n2; // a node of a link
10395 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
10396 while ( fIt->more() ) { // loop on faces sharing a node
10397 const SMDS_MeshElement* f = fIt->next();
10398 if (faceSet->find( f ) != faceSet->end() && // f is in face set
10399 ! facesOfNode1.insert( f ).second ) // f encounters twice
10401 if ( face[ iSide ] ) {
10402 MESSAGE( "2 faces per link " );
10403 return ( iSide ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10406 faceSet->erase( f );
10408 // get not link nodes
10409 int nbN = f->NbNodes();
10410 if ( f->IsQuadratic() )
10412 nbNodes[ iSide ] = nbN;
10413 list< const SMDS_MeshNode* > & nodes = notLinkNodes[ iSide ];
10414 int i1 = f->GetNodeIndex( n1 );
10415 int i2 = f->GetNodeIndex( n2 );
10416 int iEnd = nbN, iBeg = -1, iDelta = 1;
10417 bool reverse = ( Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1 );
10419 std::swap( iEnd, iBeg ); iDelta = -1;
10424 if ( i == iEnd ) i = iBeg + iDelta;
10425 if ( i == i1 ) break;
10426 nodes.push_back ( f->GetNode( i ) );
10432 // check similarity of elements of the sides
10433 if (( face[0] && !face[1] ) || ( !face[0] && face[1] )) {
10434 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10435 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10436 return ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10439 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10443 // set nodes to merge
10444 // -------------------
10446 if ( face[0] && face[1] ) {
10447 if ( nbNodes[0] != nbNodes[1] ) {
10448 MESSAGE("Diff nb of face nodes");
10449 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10451 #ifdef DEBUG_MATCHING_NODES
10452 MESSAGE ( " Link 1: " << link[0].first->GetID() <<" "<< link[0].second->GetID()
10453 << " F 1: " << face[0] << "| Link 2: " << link[1].first->GetID() <<" "
10454 << link[1].second->GetID() << " F 2: " << face[1] << " | Bind: " ) ;
10456 int nbN = nbNodes[0];
10458 list<const SMDS_MeshNode*>::iterator n1 = notLinkNodes[0].begin();
10459 list<const SMDS_MeshNode*>::iterator n2 = notLinkNodes[1].begin();
10460 for ( int i = 0 ; i < nbN - 2; ++i ) {
10461 #ifdef DEBUG_MATCHING_NODES
10462 MESSAGE ( (*n1)->GetID() << " to " << (*n2)->GetID() );
10464 nReplaceMap.insert( make_pair( *(n1++), *(n2++) ));
10468 // add other links of the face 1 to linkList
10469 // -----------------------------------------
10471 const SMDS_MeshElement* f0 = face[0];
10472 const SMDS_MeshNode* n1 = f0->GetNode( nbN - 1 );
10473 for ( int i = 0; i < nbN; i++ )
10475 const SMDS_MeshNode* n2 = f0->GetNode( i );
10476 pair< set< SMESH_TLink >::iterator, bool > iter_isnew =
10477 linkSet.insert( SMESH_TLink( n1, n2 ));
10478 if ( !iter_isnew.second ) { // already in a set: no need to process
10479 linkSet.erase( iter_isnew.first );
10481 else // new in set == encountered for the first time: add
10483 #ifdef DEBUG_MATCHING_NODES
10484 MESSAGE ( "Add link 1: " << n1->GetID() << " " << n2->GetID() << " "
10485 << " | link 2: " << nReplaceMap[n1]->GetID() << " " << nReplaceMap[n2]->GetID() << " " );
10487 linkList[0].push_back ( NLink( n1, n2 ));
10488 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10493 } // loop on link lists
10498 //================================================================================
10500 * \brief Create elements equal (on same nodes) to given ones
10501 * \param [in] theElements - a set of elems to duplicate. If it is empty, all
10502 * elements of the uppest dimension are duplicated.
10504 //================================================================================
10506 void SMESH_MeshEditor::DoubleElements( const TIDSortedElemSet& theElements )
10508 ClearLastCreated();
10509 SMESHDS_Mesh* mesh = GetMeshDS();
10511 // get an element type and an iterator over elements
10513 SMDSAbs_ElementType type = SMDSAbs_All;
10514 SMDS_ElemIteratorPtr elemIt;
10515 vector< const SMDS_MeshElement* > allElems;
10516 if ( theElements.empty() )
10518 if ( mesh->NbNodes() == 0 )
10520 // get most complex type
10521 SMDSAbs_ElementType types[SMDSAbs_NbElementTypes] = {
10522 SMDSAbs_Volume, SMDSAbs_Face, SMDSAbs_Edge,
10523 SMDSAbs_0DElement, SMDSAbs_Ball, SMDSAbs_Node
10525 for ( int i = 0; i < SMDSAbs_NbElementTypes; ++i )
10526 if ( mesh->GetMeshInfo().NbElements( types[i] ))
10531 // put all elements in the vector <allElems>
10532 allElems.reserve( mesh->GetMeshInfo().NbElements( type ));
10533 elemIt = mesh->elementsIterator( type );
10534 while ( elemIt->more() )
10535 allElems.push_back( elemIt->next());
10536 elemIt = elemSetIterator( allElems );
10540 type = (*theElements.begin())->GetType();
10541 elemIt = elemSetIterator( theElements );
10544 // duplicate elements
10546 ElemFeatures elemType;
10548 vector< const SMDS_MeshNode* > nodes;
10549 while ( elemIt->more() )
10551 const SMDS_MeshElement* elem = elemIt->next();
10552 if ( elem->GetType() != type )
10555 elemType.Init( elem, /*basicOnly=*/false );
10556 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
10558 AddElement( nodes, elemType );
10562 //================================================================================
10564 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10565 \param theElems - the list of elements (edges or faces) to be replicated
10566 The nodes for duplication could be found from these elements
10567 \param theNodesNot - list of nodes to NOT replicate
10568 \param theAffectedElems - the list of elements (cells and edges) to which the
10569 replicated nodes should be associated to.
10570 \return TRUE if operation has been completed successfully, FALSE otherwise
10572 //================================================================================
10574 bool SMESH_MeshEditor::DoubleNodes( const TIDSortedElemSet& theElems,
10575 const TIDSortedElemSet& theNodesNot,
10576 const TIDSortedElemSet& theAffectedElems )
10578 myLastCreatedElems.Clear();
10579 myLastCreatedNodes.Clear();
10581 if ( theElems.size() == 0 )
10584 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10589 TNodeNodeMap anOldNodeToNewNode;
10590 // duplicate elements and nodes
10591 res = doubleNodes( aMeshDS, theElems, theNodesNot, anOldNodeToNewNode, true );
10592 // replce nodes by duplications
10593 res = doubleNodes( aMeshDS, theAffectedElems, theNodesNot, anOldNodeToNewNode, false );
10597 //================================================================================
10599 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10600 \param theMeshDS - mesh instance
10601 \param theElems - the elements replicated or modified (nodes should be changed)
10602 \param theNodesNot - nodes to NOT replicate
10603 \param theNodeNodeMap - relation of old node to new created node
10604 \param theIsDoubleElem - flag os to replicate element or modify
10605 \return TRUE if operation has been completed successfully, FALSE otherwise
10607 //================================================================================
10609 bool SMESH_MeshEditor::doubleNodes(SMESHDS_Mesh* theMeshDS,
10610 const TIDSortedElemSet& theElems,
10611 const TIDSortedElemSet& theNodesNot,
10612 TNodeNodeMap& theNodeNodeMap,
10613 const bool theIsDoubleElem )
10615 // iterate through element and duplicate them (by nodes duplication)
10617 std::vector<const SMDS_MeshNode*> newNodes;
10618 ElemFeatures elemType;
10620 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10621 for ( ; elemItr != theElems.end(); ++elemItr )
10623 const SMDS_MeshElement* anElem = *elemItr;
10627 // duplicate nodes to duplicate element
10628 bool isDuplicate = false;
10629 newNodes.resize( anElem->NbNodes() );
10630 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10632 while ( anIter->more() )
10634 const SMDS_MeshNode* aCurrNode = static_cast<const SMDS_MeshNode*>( anIter->next() );
10635 const SMDS_MeshNode* aNewNode = aCurrNode;
10636 TNodeNodeMap::iterator n2n = theNodeNodeMap.find( aCurrNode );
10637 if ( n2n != theNodeNodeMap.end() )
10639 aNewNode = n2n->second;
10641 else if ( theIsDoubleElem && !theNodesNot.count( aCurrNode ))
10644 aNewNode = theMeshDS->AddNode( aCurrNode->X(), aCurrNode->Y(), aCurrNode->Z() );
10645 copyPosition( aCurrNode, aNewNode );
10646 theNodeNodeMap[ aCurrNode ] = aNewNode;
10647 myLastCreatedNodes.Append( aNewNode );
10649 isDuplicate |= (aCurrNode != aNewNode);
10650 newNodes[ ind++ ] = aNewNode;
10652 if ( !isDuplicate )
10655 if ( theIsDoubleElem )
10656 AddElement( newNodes, elemType.Init( anElem, /*basicOnly=*/false ));
10658 theMeshDS->ChangeElementNodes( anElem, &newNodes[ 0 ], newNodes.size() );
10665 //================================================================================
10667 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10668 \param theNodes - identifiers of nodes to be doubled
10669 \param theModifiedElems - identifiers of elements to be updated by the new (doubled)
10670 nodes. If list of element identifiers is empty then nodes are doubled but
10671 they not assigned to elements
10672 \return TRUE if operation has been completed successfully, FALSE otherwise
10674 //================================================================================
10676 bool SMESH_MeshEditor::DoubleNodes( const std::list< int >& theListOfNodes,
10677 const std::list< int >& theListOfModifiedElems )
10679 myLastCreatedElems.Clear();
10680 myLastCreatedNodes.Clear();
10682 if ( theListOfNodes.size() == 0 )
10685 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10689 // iterate through nodes and duplicate them
10691 std::map< const SMDS_MeshNode*, const SMDS_MeshNode* > anOldNodeToNewNode;
10693 std::list< int >::const_iterator aNodeIter;
10694 for ( aNodeIter = theListOfNodes.begin(); aNodeIter != theListOfNodes.end(); ++aNodeIter )
10696 int aCurr = *aNodeIter;
10697 SMDS_MeshNode* aNode = (SMDS_MeshNode*)aMeshDS->FindNode( aCurr );
10703 const SMDS_MeshNode* aNewNode = aMeshDS->AddNode( aNode->X(), aNode->Y(), aNode->Z() );
10706 copyPosition( aNode, aNewNode );
10707 anOldNodeToNewNode[ aNode ] = aNewNode;
10708 myLastCreatedNodes.Append( aNewNode );
10712 // Create map of new nodes for modified elements
10714 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> > anElemToNodes;
10716 std::list< int >::const_iterator anElemIter;
10717 for ( anElemIter = theListOfModifiedElems.begin();
10718 anElemIter != theListOfModifiedElems.end(); ++anElemIter )
10720 int aCurr = *anElemIter;
10721 SMDS_MeshElement* anElem = (SMDS_MeshElement*)aMeshDS->FindElement( aCurr );
10725 vector<const SMDS_MeshNode*> aNodeArr( anElem->NbNodes() );
10727 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10729 while ( anIter->more() )
10731 SMDS_MeshNode* aCurrNode = (SMDS_MeshNode*)anIter->next();
10732 if ( aCurr && anOldNodeToNewNode.find( aCurrNode ) != anOldNodeToNewNode.end() )
10734 const SMDS_MeshNode* aNewNode = anOldNodeToNewNode[ aCurrNode ];
10735 aNodeArr[ ind++ ] = aNewNode;
10738 aNodeArr[ ind++ ] = aCurrNode;
10740 anElemToNodes[ anElem ] = aNodeArr;
10743 // Change nodes of elements
10745 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> >::iterator
10746 anElemToNodesIter = anElemToNodes.begin();
10747 for ( ; anElemToNodesIter != anElemToNodes.end(); ++anElemToNodesIter )
10749 const SMDS_MeshElement* anElem = anElemToNodesIter->first;
10750 vector<const SMDS_MeshNode*> aNodeArr = anElemToNodesIter->second;
10753 aMeshDS->ChangeElementNodes( anElem, &aNodeArr[ 0 ], anElem->NbNodes() );
10762 //================================================================================
10764 \brief Check if element located inside shape
10765 \return TRUE if IN or ON shape, FALSE otherwise
10767 //================================================================================
10769 template<class Classifier>
10770 bool isInside(const SMDS_MeshElement* theElem,
10771 Classifier& theClassifier,
10772 const double theTol)
10774 gp_XYZ centerXYZ (0, 0, 0);
10775 SMDS_ElemIteratorPtr aNodeItr = theElem->nodesIterator();
10776 while (aNodeItr->more())
10777 centerXYZ += SMESH_TNodeXYZ(cast2Node( aNodeItr->next()));
10779 gp_Pnt aPnt = centerXYZ / theElem->NbNodes();
10780 theClassifier.Perform(aPnt, theTol);
10781 TopAbs_State aState = theClassifier.State();
10782 return (aState == TopAbs_IN || aState == TopAbs_ON );
10785 //================================================================================
10787 * \brief Classifier of the 3D point on the TopoDS_Face
10788 * with interaface suitable for isInside()
10790 //================================================================================
10792 struct _FaceClassifier
10794 Extrema_ExtPS _extremum;
10795 BRepAdaptor_Surface _surface;
10796 TopAbs_State _state;
10798 _FaceClassifier(const TopoDS_Face& face):_extremum(),_surface(face),_state(TopAbs_OUT)
10800 _extremum.Initialize( _surface,
10801 _surface.FirstUParameter(), _surface.LastUParameter(),
10802 _surface.FirstVParameter(), _surface.LastVParameter(),
10803 _surface.Tolerance(), _surface.Tolerance() );
10805 void Perform(const gp_Pnt& aPnt, double theTol)
10808 _state = TopAbs_OUT;
10809 _extremum.Perform(aPnt);
10810 if ( _extremum.IsDone() )
10811 for ( int iSol = 1; iSol <= _extremum.NbExt() && _state == TopAbs_OUT; ++iSol)
10812 _state = ( _extremum.SquareDistance(iSol) <= theTol ? TopAbs_IN : TopAbs_OUT );
10814 TopAbs_State State() const
10821 //================================================================================
10823 \brief Identify the elements that will be affected by node duplication (actual duplication is not performed).
10824 This method is the first step of DoubleNodeElemGroupsInRegion.
10825 \param theElems - list of groups of elements (edges or faces) to be replicated
10826 \param theNodesNot - list of groups of nodes not to replicated
10827 \param theShape - shape to detect affected elements (element which geometric center
10828 located on or inside shape). If the shape is null, detection is done on faces orientations
10829 (select elements with a gravity center on the side given by faces normals).
10830 This mode (null shape) is faster, but works only when theElems are faces, with coherents orientations.
10831 The replicated nodes should be associated to affected elements.
10832 \return groups of affected elements
10833 \sa DoubleNodeElemGroupsInRegion()
10835 //================================================================================
10837 bool SMESH_MeshEditor::AffectedElemGroupsInRegion( const TIDSortedElemSet& theElems,
10838 const TIDSortedElemSet& theNodesNot,
10839 const TopoDS_Shape& theShape,
10840 TIDSortedElemSet& theAffectedElems)
10842 if ( theShape.IsNull() )
10844 std::set<const SMDS_MeshNode*> alreadyCheckedNodes;
10845 std::set<const SMDS_MeshElement*> alreadyCheckedElems;
10846 std::set<const SMDS_MeshElement*> edgesToCheck;
10847 alreadyCheckedNodes.clear();
10848 alreadyCheckedElems.clear();
10849 edgesToCheck.clear();
10851 // --- iterates on elements to be replicated and get elements by back references from their nodes
10853 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10854 for ( ; elemItr != theElems.end(); ++elemItr )
10856 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
10857 if (!anElem || (anElem->GetType() != SMDSAbs_Face))
10860 SMESH_MeshAlgos::FaceNormal( anElem, normal, /*normalized=*/true );
10861 std::set<const SMDS_MeshNode*> nodesElem;
10863 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
10864 while ( nodeItr->more() )
10866 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10867 nodesElem.insert(aNode);
10869 std::set<const SMDS_MeshNode*>::iterator nodit = nodesElem.begin();
10870 for (; nodit != nodesElem.end(); nodit++)
10872 const SMDS_MeshNode* aNode = *nodit;
10873 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
10875 if (alreadyCheckedNodes.find(aNode) != alreadyCheckedNodes.end())
10877 alreadyCheckedNodes.insert(aNode);
10878 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
10879 while ( backElemItr->more() )
10881 const SMDS_MeshElement* curElem = backElemItr->next();
10882 if (alreadyCheckedElems.find(curElem) != alreadyCheckedElems.end())
10884 if (theElems.find(curElem) != theElems.end())
10886 alreadyCheckedElems.insert(curElem);
10887 double x=0, y=0, z=0;
10889 SMDS_ElemIteratorPtr nodeItr2 = curElem->nodesIterator();
10890 while ( nodeItr2->more() )
10892 const SMDS_MeshNode* anotherNode = cast2Node(nodeItr2->next());
10893 x += anotherNode->X();
10894 y += anotherNode->Y();
10895 z += anotherNode->Z();
10899 p.SetCoord( x/nb -aNode->X(),
10901 z/nb -aNode->Z() );
10904 theAffectedElems.insert( curElem );
10906 else if (curElem->GetType() == SMDSAbs_Edge)
10907 edgesToCheck.insert(curElem);
10911 // --- add also edges lying on the set of faces (all nodes in alreadyCheckedNodes)
10912 std::set<const SMDS_MeshElement*>::iterator eit = edgesToCheck.begin();
10913 for( ; eit != edgesToCheck.end(); eit++)
10915 bool onside = true;
10916 const SMDS_MeshElement* anEdge = *eit;
10917 SMDS_ElemIteratorPtr nodeItr = anEdge->nodesIterator();
10918 while ( nodeItr->more() )
10920 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10921 if (alreadyCheckedNodes.find(aNode) == alreadyCheckedNodes.end())
10929 theAffectedElems.insert(anEdge);
10935 const double aTol = Precision::Confusion();
10936 auto_ptr< BRepClass3d_SolidClassifier> bsc3d;
10937 auto_ptr<_FaceClassifier> aFaceClassifier;
10938 if ( theShape.ShapeType() == TopAbs_SOLID )
10940 bsc3d.reset( new BRepClass3d_SolidClassifier(theShape));;
10941 bsc3d->PerformInfinitePoint(aTol);
10943 else if (theShape.ShapeType() == TopAbs_FACE )
10945 aFaceClassifier.reset( new _FaceClassifier(TopoDS::Face(theShape)));
10948 // iterates on indicated elements and get elements by back references from their nodes
10949 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10950 for ( ; elemItr != theElems.end(); ++elemItr )
10952 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
10955 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
10956 while ( nodeItr->more() )
10958 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10959 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
10961 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
10962 while ( backElemItr->more() )
10964 const SMDS_MeshElement* curElem = backElemItr->next();
10965 if ( curElem && theElems.find(curElem) == theElems.end() &&
10967 isInside( curElem, *bsc3d, aTol ) :
10968 isInside( curElem, *aFaceClassifier, aTol )))
10969 theAffectedElems.insert( curElem );
10977 //================================================================================
10979 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10980 \param theElems - group of of elements (edges or faces) to be replicated
10981 \param theNodesNot - group of nodes not to replicate
10982 \param theShape - shape to detect affected elements (element which geometric center
10983 located on or inside shape).
10984 The replicated nodes should be associated to affected elements.
10985 \return TRUE if operation has been completed successfully, FALSE otherwise
10987 //================================================================================
10989 bool SMESH_MeshEditor::DoubleNodesInRegion( const TIDSortedElemSet& theElems,
10990 const TIDSortedElemSet& theNodesNot,
10991 const TopoDS_Shape& theShape )
10993 if ( theShape.IsNull() )
10996 const double aTol = Precision::Confusion();
10997 SMESHUtils::Deleter< BRepClass3d_SolidClassifier> bsc3d;
10998 SMESHUtils::Deleter<_FaceClassifier> aFaceClassifier;
10999 if ( theShape.ShapeType() == TopAbs_SOLID )
11001 bsc3d._obj = new BRepClass3d_SolidClassifier( theShape );
11002 bsc3d->PerformInfinitePoint(aTol);
11004 else if (theShape.ShapeType() == TopAbs_FACE )
11006 aFaceClassifier._obj = new _FaceClassifier( TopoDS::Face( theShape ));
11009 // iterates on indicated elements and get elements by back references from their nodes
11010 TIDSortedElemSet anAffected;
11011 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
11012 for ( ; elemItr != theElems.end(); ++elemItr )
11014 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
11018 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
11019 while ( nodeItr->more() )
11021 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
11022 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
11024 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
11025 while ( backElemItr->more() )
11027 const SMDS_MeshElement* curElem = backElemItr->next();
11028 if ( curElem && theElems.find(curElem) == theElems.end() &&
11030 isInside( curElem, *bsc3d, aTol ) :
11031 isInside( curElem, *aFaceClassifier, aTol )))
11032 anAffected.insert( curElem );
11036 return DoubleNodes( theElems, theNodesNot, anAffected );
11040 * \brief compute an oriented angle between two planes defined by four points.
11041 * The vector (p0,p1) defines the intersection of the 2 planes (p0,p1,g1) and (p0,p1,g2)
11042 * @param p0 base of the rotation axe
11043 * @param p1 extremity of the rotation axe
11044 * @param g1 belongs to the first plane
11045 * @param g2 belongs to the second plane
11047 double SMESH_MeshEditor::OrientedAngle(const gp_Pnt& p0, const gp_Pnt& p1, const gp_Pnt& g1, const gp_Pnt& g2)
11049 gp_Vec vref(p0, p1);
11052 gp_Vec n1 = vref.Crossed(v1);
11053 gp_Vec n2 = vref.Crossed(v2);
11055 return n2.AngleWithRef(n1, vref);
11057 catch ( Standard_Failure ) {
11059 return Max( v1.Magnitude(), v2.Magnitude() );
11063 * \brief Double nodes on shared faces between groups of volumes and create flat elements on demand.
11064 * The list of groups must contain at least two groups. The groups have to be disjoint: no common element into two different groups.
11065 * The nodes of the internal faces at the boundaries of the groups are doubled. Optionally, the internal faces are replaced by flat elements.
11066 * Triangles are transformed into prisms, and quadrangles into hexahedrons.
11067 * The flat elements are stored in groups of volumes. These groups are named according to the position of the group in the list:
11068 * 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.
11069 * 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.
11070 * All the flat elements are gathered into the group named "joints3D" (or "joints2D" in 2D situation).
11071 * The flat element of the multiple junctions between the simple junction are stored in a group named "jointsMultiples".
11072 * \param theElems - list of groups of volumes, where a group of volume is a set of
11073 * SMDS_MeshElements sorted by Id.
11074 * \param createJointElems - if TRUE, create the elements
11075 * \param onAllBoundaries - if TRUE, the nodes and elements are also created on
11076 * the boundary between \a theDomains and the rest mesh
11077 * \return TRUE if operation has been completed successfully, FALSE otherwise
11079 bool SMESH_MeshEditor::DoubleNodesOnGroupBoundaries( const std::vector<TIDSortedElemSet>& theElems,
11080 bool createJointElems,
11081 bool onAllBoundaries)
11083 // MESSAGE("----------------------------------------------");
11084 // MESSAGE("SMESH_MeshEditor::doubleNodesOnGroupBoundaries");
11085 // MESSAGE("----------------------------------------------");
11087 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11088 meshDS->BuildDownWardConnectivity(true);
11090 SMDS_UnstructuredGrid *grid = meshDS->getGrid();
11092 // --- build the list of faces shared by 2 domains (group of elements), with their domain and volume indexes
11093 // build the list of cells with only a node or an edge on the border, with their domain and volume indexes
11094 // build the list of nodes shared by 2 or more domains, with their domain indexes
11096 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceDomains; // face --> (id domain --> id volume)
11097 std::map<int,int>celldom; // cell vtkId --> domain
11098 std::map<DownIdType, std::map<int,int>, DownIdCompare> cellDomains; // oldNode --> (id domain --> id cell)
11099 std::map<int, std::map<int,int> > nodeDomains; // oldId --> (domainId --> newId)
11100 faceDomains.clear();
11102 cellDomains.clear();
11103 nodeDomains.clear();
11104 std::map<int,int> emptyMap;
11105 std::set<int> emptySet;
11108 //MESSAGE(".. Number of domains :"<<theElems.size());
11110 TIDSortedElemSet theRestDomElems;
11111 const int iRestDom = -1;
11112 const int idom0 = onAllBoundaries ? iRestDom : 0;
11113 const int nbDomains = theElems.size();
11115 // Check if the domains do not share an element
11116 for (int idom = 0; idom < nbDomains-1; idom++)
11118 // MESSAGE("... Check of domain #" << idom);
11119 const TIDSortedElemSet& domain = theElems[idom];
11120 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11121 for (; elemItr != domain.end(); ++elemItr)
11123 const SMDS_MeshElement* anElem = *elemItr;
11124 int idombisdeb = idom + 1 ;
11125 // check if the element belongs to a domain further in the list
11126 for ( size_t idombis = idombisdeb; idombis < theElems.size(); idombis++ )
11128 const TIDSortedElemSet& domainbis = theElems[idombis];
11129 if ( domainbis.count( anElem ))
11131 MESSAGE(".... Domain #" << idom);
11132 MESSAGE(".... Domain #" << idombis);
11133 throw SALOME_Exception("The domains are not disjoint.");
11140 for (int idom = 0; idom < nbDomains; idom++)
11143 // --- build a map (face to duplicate --> volume to modify)
11144 // with all the faces shared by 2 domains (group of elements)
11145 // and corresponding volume of this domain, for each shared face.
11146 // a volume has a face shared by 2 domains if it has a neighbor which is not in his domain.
11148 //MESSAGE("... Neighbors of domain #" << idom);
11149 const TIDSortedElemSet& domain = theElems[idom];
11150 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11151 for (; elemItr != domain.end(); ++elemItr)
11153 const SMDS_MeshElement* anElem = *elemItr;
11156 int vtkId = anElem->getVtkId();
11157 //MESSAGE(" vtkId " << vtkId << " smdsId " << anElem->GetID());
11158 int neighborsVtkIds[NBMAXNEIGHBORS];
11159 int downIds[NBMAXNEIGHBORS];
11160 unsigned char downTypes[NBMAXNEIGHBORS];
11161 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
11162 for (int n = 0; n < nbNeighbors; n++)
11164 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
11165 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
11166 if (elem && ! domain.count(elem)) // neighbor is in another domain : face is shared
11169 for ( size_t idombis = 0; idombis < theElems.size() && !ok; idombis++) // check if the neighbor belongs to another domain of the list
11171 // MESSAGE("Domain " << idombis);
11172 const TIDSortedElemSet& domainbis = theElems[idombis];
11173 if ( domainbis.count(elem)) ok = true ; // neighbor is in a correct domain : face is kept
11175 if ( ok || onAllBoundaries ) // the characteristics of the face is stored
11177 DownIdType face(downIds[n], downTypes[n]);
11178 if (!faceDomains[face].count(idom))
11180 faceDomains[face][idom] = vtkId; // volume associated to face in this domain
11181 celldom[vtkId] = idom;
11182 //MESSAGE(" cell with a border " << vtkId << " domain " << idom);
11186 theRestDomElems.insert( elem );
11187 faceDomains[face][iRestDom] = neighborsVtkIds[n];
11188 celldom[neighborsVtkIds[n]] = iRestDom;
11196 //MESSAGE("Number of shared faces " << faceDomains.size());
11197 std::map<DownIdType, std::map<int, int>, DownIdCompare>::iterator itface;
11199 // --- explore the shared faces domain by domain,
11200 // explore the nodes of the face and see if they belong to a cell in the domain,
11201 // which has only a node or an edge on the border (not a shared face)
11203 for (int idomain = idom0; idomain < nbDomains; idomain++)
11205 //MESSAGE("Domain " << idomain);
11206 const TIDSortedElemSet& domain = (idomain == iRestDom) ? theRestDomElems : theElems[idomain];
11207 itface = faceDomains.begin();
11208 for (; itface != faceDomains.end(); ++itface)
11210 const std::map<int, int>& domvol = itface->second;
11211 if (!domvol.count(idomain))
11213 DownIdType face = itface->first;
11214 //MESSAGE(" --- face " << face.cellId);
11215 std::set<int> oldNodes;
11217 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11218 std::set<int>::iterator itn = oldNodes.begin();
11219 for (; itn != oldNodes.end(); ++itn)
11222 //MESSAGE(" node " << oldId);
11223 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11224 for (int i=0; i<l.ncells; i++)
11226 int vtkId = l.cells[i];
11227 const SMDS_MeshElement* anElem = GetMeshDS()->FindElement(GetMeshDS()->fromVtkToSmds(vtkId));
11228 if (!domain.count(anElem))
11230 int vtkType = grid->GetCellType(vtkId);
11231 int downId = grid->CellIdToDownId(vtkId);
11234 MESSAGE("doubleNodesOnGroupBoundaries: internal algorithm problem");
11235 continue; // not OK at this stage of the algorithm:
11236 //no cells created after BuildDownWardConnectivity
11238 DownIdType aCell(downId, vtkType);
11239 cellDomains[aCell][idomain] = vtkId;
11240 celldom[vtkId] = idomain;
11241 //MESSAGE(" cell " << vtkId << " domain " << idomain);
11247 // --- explore the shared faces domain by domain, to duplicate the nodes in a coherent way
11248 // for each shared face, get the nodes
11249 // for each node, for each domain of the face, create a clone of the node
11251 // --- edges at the intersection of 3 or 4 domains, with the order of domains to build
11252 // junction elements of type prism or hexa. the key is the pair of nodesId (lower first)
11253 // the value is the ordered domain ids. (more than 4 domains not taken into account)
11255 std::map<std::vector<int>, std::vector<int> > edgesMultiDomains; // nodes of edge --> ordered domains
11256 std::map<int, std::vector<int> > mutipleNodes; // nodes multi domains with domain order
11257 std::map<int, std::vector<int> > mutipleNodesToFace; // nodes multi domains with domain order to transform in Face (junction between 3 or more 2D domains)
11259 //MESSAGE(".. Duplication of the nodes");
11260 for (int idomain = idom0; idomain < nbDomains; idomain++)
11262 itface = faceDomains.begin();
11263 for (; itface != faceDomains.end(); ++itface)
11265 const std::map<int, int>& domvol = itface->second;
11266 if (!domvol.count(idomain))
11268 DownIdType face = itface->first;
11269 //MESSAGE(" --- face " << face.cellId);
11270 std::set<int> oldNodes;
11272 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11273 std::set<int>::iterator itn = oldNodes.begin();
11274 for (; itn != oldNodes.end(); ++itn)
11277 if (nodeDomains[oldId].empty())
11279 nodeDomains[oldId][idomain] = oldId; // keep the old node in the first domain
11280 //MESSAGE("-+-+-b oldNode " << oldId << " domain " << idomain);
11282 std::map<int, int>::const_iterator itdom = domvol.begin();
11283 for (; itdom != domvol.end(); ++itdom)
11285 int idom = itdom->first;
11286 //MESSAGE(" domain " << idom);
11287 if (!nodeDomains[oldId].count(idom)) // --- node to clone
11289 if (nodeDomains[oldId].size() >= 2) // a multiple node
11291 vector<int> orderedDoms;
11292 //MESSAGE("multiple node " << oldId);
11293 if (mutipleNodes.count(oldId))
11294 orderedDoms = mutipleNodes[oldId];
11297 map<int,int>::iterator it = nodeDomains[oldId].begin();
11298 for (; it != nodeDomains[oldId].end(); ++it)
11299 orderedDoms.push_back(it->first);
11301 orderedDoms.push_back(idom); // TODO order ==> push_front or back
11302 //stringstream txt;
11303 //for (int i=0; i<orderedDoms.size(); i++)
11304 // txt << orderedDoms[i] << " ";
11305 //MESSAGE("orderedDoms " << txt.str());
11306 mutipleNodes[oldId] = orderedDoms;
11308 double *coords = grid->GetPoint(oldId);
11309 SMDS_MeshNode *newNode = meshDS->AddNode(coords[0], coords[1], coords[2]);
11310 copyPosition( meshDS->FindNodeVtk( oldId ), newNode );
11311 int newId = newNode->getVtkId();
11312 nodeDomains[oldId][idom] = newId; // cloned node for other domains
11313 //MESSAGE("-+-+-c oldNode " << oldId << " domain " << idomain << " newNode " << newId << " domain " << idom << " size=" <<nodeDomains[oldId].size());
11320 //MESSAGE(".. Creation of elements");
11321 for (int idomain = idom0; idomain < nbDomains; idomain++)
11323 itface = faceDomains.begin();
11324 for (; itface != faceDomains.end(); ++itface)
11326 std::map<int, int> domvol = itface->second;
11327 if (!domvol.count(idomain))
11329 DownIdType face = itface->first;
11330 //MESSAGE(" --- face " << face.cellId);
11331 std::set<int> oldNodes;
11333 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11334 int nbMultipleNodes = 0;
11335 std::set<int>::iterator itn = oldNodes.begin();
11336 for (; itn != oldNodes.end(); ++itn)
11339 if (mutipleNodes.count(oldId))
11342 if (nbMultipleNodes > 1) // check if an edge of the face is shared between 3 or more domains
11344 //MESSAGE("multiple Nodes detected on a shared face");
11345 int downId = itface->first.cellId;
11346 unsigned char cellType = itface->first.cellType;
11347 // --- shared edge or shared face ?
11348 if ((cellType == VTK_LINE) || (cellType == VTK_QUADRATIC_EDGE)) // shared edge (between two faces)
11351 int nbNodes = grid->getDownArray(cellType)->getNodes(downId, nodes);
11352 for (int i=0; i< nbNodes; i=i+nbNodes-1) // i=0 , i=nbNodes-1
11353 if (mutipleNodes.count(nodes[i]))
11354 if (!mutipleNodesToFace.count(nodes[i]))
11355 mutipleNodesToFace[nodes[i]] = mutipleNodes[nodes[i]];
11357 else // shared face (between two volumes)
11359 int nbEdges = grid->getDownArray(cellType)->getNumberOfDownCells(downId);
11360 const int* downEdgeIds = grid->getDownArray(cellType)->getDownCells(downId);
11361 const unsigned char* edgeType = grid->getDownArray(cellType)->getDownTypes(downId);
11362 for (int ie =0; ie < nbEdges; ie++)
11365 int nbNodes = grid->getDownArray(edgeType[ie])->getNodes(downEdgeIds[ie], nodes);
11366 if ( mutipleNodes.count(nodes[0]) && mutipleNodes.count( nodes[ nbNodes-1 ]))
11368 vector<int> vn0 = mutipleNodes[nodes[0]];
11369 vector<int> vn1 = mutipleNodes[nodes[nbNodes - 1]];
11371 for ( size_t i0 = 0; i0 < vn0.size(); i0++ )
11372 for ( size_t i1 = 0; i1 < vn1.size(); i1++ )
11373 if ( vn0[i0] == vn1[i1] )
11374 doms.push_back( vn0[ i0 ]);
11375 if ( doms.size() > 2 )
11377 //MESSAGE(" detect edgesMultiDomains " << nodes[0] << " " << nodes[nbNodes - 1]);
11378 double *coords = grid->GetPoint(nodes[0]);
11379 gp_Pnt p0(coords[0], coords[1], coords[2]);
11380 coords = grid->GetPoint(nodes[nbNodes - 1]);
11381 gp_Pnt p1(coords[0], coords[1], coords[2]);
11383 int vtkVolIds[1000]; // an edge can belong to a lot of volumes
11384 map<int, SMDS_VtkVolume*> domvol; // domain --> a volume with the edge
11385 map<int, double> angleDom; // oriented angles between planes defined by edge and volume centers
11386 int nbvol = grid->GetParentVolumes(vtkVolIds, downEdgeIds[ie], edgeType[ie]);
11387 for ( size_t id = 0; id < doms.size(); id++ )
11389 int idom = doms[id];
11390 const TIDSortedElemSet& domain = (idom == iRestDom) ? theRestDomElems : theElems[idom];
11391 for ( int ivol = 0; ivol < nbvol; ivol++ )
11393 int smdsId = meshDS->fromVtkToSmds(vtkVolIds[ivol]);
11394 SMDS_MeshElement* elem = (SMDS_MeshElement*)meshDS->FindElement(smdsId);
11395 if (domain.count(elem))
11397 SMDS_VtkVolume* svol = dynamic_cast<SMDS_VtkVolume*>(elem);
11398 domvol[idom] = svol;
11399 //MESSAGE(" domain " << idom << " volume " << elem->GetID());
11401 vtkIdType npts = 0;
11402 vtkIdType* pts = 0;
11403 grid->GetCellPoints(vtkVolIds[ivol], npts, pts);
11404 SMDS_VtkVolume::gravityCenter(grid, pts, npts, values);
11407 gref.SetXYZ(gp_XYZ(values[0], values[1], values[2]));
11408 angleDom[idom] = 0;
11412 gp_Pnt g(values[0], values[1], values[2]);
11413 angleDom[idom] = OrientedAngle(p0, p1, gref, g); // -pi<angle<+pi
11414 //MESSAGE(" angle=" << angleDom[idom]);
11420 map<double, int> sortedDom; // sort domains by angle
11421 for (map<int, double>::iterator ia = angleDom.begin(); ia != angleDom.end(); ++ia)
11422 sortedDom[ia->second] = ia->first;
11423 vector<int> vnodes;
11425 for (map<double, int>::iterator ib = sortedDom.begin(); ib != sortedDom.end(); ++ib)
11427 vdom.push_back(ib->second);
11428 //MESSAGE(" ordered domain " << ib->second << " angle " << ib->first);
11430 for (int ino = 0; ino < nbNodes; ino++)
11431 vnodes.push_back(nodes[ino]);
11432 edgesMultiDomains[vnodes] = vdom; // nodes vector --> ordered domains
11441 // --- iterate on shared faces (volumes to modify, face to extrude)
11442 // get node id's of the face (id SMDS = id VTK)
11443 // create flat element with old and new nodes if requested
11445 // --- new quad nodes on flat quad elements: oldId --> ((domain1 X domain2) --> newId)
11446 // (domain1 X domain2) = domain1 + MAXINT*domain2
11448 std::map<int, std::map<long,int> > nodeQuadDomains;
11449 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11451 //MESSAGE(".. Creation of elements: simple junction");
11452 if (createJointElems)
11455 string joints2DName = "joints2D";
11456 mapOfJunctionGroups[joints2DName] = this->myMesh->AddGroup(SMDSAbs_Face, joints2DName.c_str(), idg);
11457 SMESHDS_Group *joints2DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints2DName]->GetGroupDS());
11458 string joints3DName = "joints3D";
11459 mapOfJunctionGroups[joints3DName] = this->myMesh->AddGroup(SMDSAbs_Volume, joints3DName.c_str(), idg);
11460 SMESHDS_Group *joints3DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints3DName]->GetGroupDS());
11462 itface = faceDomains.begin();
11463 for (; itface != faceDomains.end(); ++itface)
11465 DownIdType face = itface->first;
11466 std::set<int> oldNodes;
11467 std::set<int>::iterator itn;
11469 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11471 std::map<int, int> domvol = itface->second;
11472 std::map<int, int>::iterator itdom = domvol.begin();
11473 int dom1 = itdom->first;
11474 int vtkVolId = itdom->second;
11476 int dom2 = itdom->first;
11477 SMDS_MeshCell *vol = grid->extrudeVolumeFromFace(vtkVolId, dom1, dom2, oldNodes, nodeDomains,
11479 stringstream grpname;
11482 grpname << dom1 << "_" << dom2;
11484 grpname << dom2 << "_" << dom1;
11485 string namegrp = grpname.str();
11486 if (!mapOfJunctionGroups.count(namegrp))
11487 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(vol->GetType(), namegrp.c_str(), idg);
11488 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11490 sgrp->Add(vol->GetID());
11491 if (vol->GetType() == SMDSAbs_Volume)
11492 joints3DGrp->Add(vol->GetID());
11493 else if (vol->GetType() == SMDSAbs_Face)
11494 joints2DGrp->Add(vol->GetID());
11498 // --- create volumes on multiple domain intersection if requested
11499 // iterate on mutipleNodesToFace
11500 // iterate on edgesMultiDomains
11502 //MESSAGE(".. Creation of elements: multiple junction");
11503 if (createJointElems)
11505 // --- iterate on mutipleNodesToFace
11507 std::map<int, std::vector<int> >::iterator itn = mutipleNodesToFace.begin();
11508 for (; itn != mutipleNodesToFace.end(); ++itn)
11510 int node = itn->first;
11511 vector<int> orderDom = itn->second;
11512 vector<vtkIdType> orderedNodes;
11513 for ( size_t idom = 0; idom < orderDom.size(); idom++ )
11514 orderedNodes.push_back( nodeDomains[ node ][ orderDom[ idom ]]);
11515 SMDS_MeshFace* face = this->GetMeshDS()->AddFaceFromVtkIds(orderedNodes);
11517 stringstream grpname;
11519 grpname << 0 << "_" << 0;
11521 string namegrp = grpname.str();
11522 if (!mapOfJunctionGroups.count(namegrp))
11523 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Face, namegrp.c_str(), idg);
11524 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11526 sgrp->Add(face->GetID());
11529 // --- iterate on edgesMultiDomains
11531 std::map<std::vector<int>, std::vector<int> >::iterator ite = edgesMultiDomains.begin();
11532 for (; ite != edgesMultiDomains.end(); ++ite)
11534 vector<int> nodes = ite->first;
11535 vector<int> orderDom = ite->second;
11536 vector<vtkIdType> orderedNodes;
11537 if (nodes.size() == 2)
11539 //MESSAGE(" use edgesMultiDomains " << nodes[0] << " " << nodes[1]);
11540 for ( size_t ino = 0; ino < nodes.size(); ino++ )
11541 if ( orderDom.size() == 3 )
11542 for ( size_t idom = 0; idom < orderDom.size(); idom++ )
11543 orderedNodes.push_back( nodeDomains[ nodes[ ino ]][ orderDom[ idom ]]);
11545 for (int idom = orderDom.size()-1; idom >=0; idom--)
11546 orderedNodes.push_back( nodeDomains[ nodes[ ino ]][ orderDom[ idom ]]);
11547 SMDS_MeshVolume* vol = this->GetMeshDS()->AddVolumeFromVtkIds(orderedNodes);
11550 string namegrp = "jointsMultiples";
11551 if (!mapOfJunctionGroups.count(namegrp))
11552 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11553 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11555 sgrp->Add(vol->GetID());
11559 //INFOS("Quadratic multiple joints not implemented");
11560 // TODO quadratic nodes
11565 // --- list the explicit faces and edges of the mesh that need to be modified,
11566 // i.e. faces and edges built with one or more duplicated nodes.
11567 // associate these faces or edges to their corresponding domain.
11568 // only the first domain found is kept when a face or edge is shared
11570 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceOrEdgeDom; // cellToModify --> (id domain --> id cell)
11571 std::map<int,int> feDom; // vtk id of cell to modify --> id domain
11572 faceOrEdgeDom.clear();
11575 //MESSAGE(".. Modification of elements");
11576 for (int idomain = idom0; idomain < nbDomains; idomain++)
11578 std::map<int, std::map<int, int> >::const_iterator itnod = nodeDomains.begin();
11579 for (; itnod != nodeDomains.end(); ++itnod)
11581 int oldId = itnod->first;
11582 //MESSAGE(" node " << oldId);
11583 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11584 for (int i = 0; i < l.ncells; i++)
11586 int vtkId = l.cells[i];
11587 int vtkType = grid->GetCellType(vtkId);
11588 int downId = grid->CellIdToDownId(vtkId);
11590 continue; // new cells: not to be modified
11591 DownIdType aCell(downId, vtkType);
11592 int volParents[1000];
11593 int nbvol = grid->GetParentVolumes(volParents, vtkId);
11594 for (int j = 0; j < nbvol; j++)
11595 if (celldom.count(volParents[j]) && (celldom[volParents[j]] == idomain))
11596 if (!feDom.count(vtkId))
11598 feDom[vtkId] = idomain;
11599 faceOrEdgeDom[aCell] = emptyMap;
11600 faceOrEdgeDom[aCell][idomain] = vtkId; // affect face or edge to the first domain only
11601 //MESSAGE("affect cell " << this->GetMeshDS()->fromVtkToSmds(vtkId) << " domain " << idomain
11602 // << " type " << vtkType << " downId " << downId);
11608 // --- iterate on shared faces (volumes to modify, face to extrude)
11609 // get node id's of the face
11610 // replace old nodes by new nodes in volumes, and update inverse connectivity
11612 std::map<DownIdType, std::map<int,int>, DownIdCompare>* maps[3] = {&faceDomains, &cellDomains, &faceOrEdgeDom};
11613 for (int m=0; m<3; m++)
11615 std::map<DownIdType, std::map<int,int>, DownIdCompare>* amap = maps[m];
11616 itface = (*amap).begin();
11617 for (; itface != (*amap).end(); ++itface)
11619 DownIdType face = itface->first;
11620 std::set<int> oldNodes;
11621 std::set<int>::iterator itn;
11623 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11624 //MESSAGE("examine cell, downId " << face.cellId << " type " << int(face.cellType));
11625 std::map<int, int> localClonedNodeIds;
11627 std::map<int, int> domvol = itface->second;
11628 std::map<int, int>::iterator itdom = domvol.begin();
11629 for (; itdom != domvol.end(); ++itdom)
11631 int idom = itdom->first;
11632 int vtkVolId = itdom->second;
11633 //MESSAGE("modify nodes of cell " << this->GetMeshDS()->fromVtkToSmds(vtkVolId) << " domain " << idom);
11634 localClonedNodeIds.clear();
11635 for (itn = oldNodes.begin(); itn != oldNodes.end(); ++itn)
11638 if (nodeDomains[oldId].count(idom))
11640 localClonedNodeIds[oldId] = nodeDomains[oldId][idom];
11641 //MESSAGE(" node " << oldId << " --> " << localClonedNodeIds[oldId]);
11644 meshDS->ModifyCellNodes(vtkVolId, localClonedNodeIds);
11649 // Remove empty groups (issue 0022812)
11650 std::map<std::string, SMESH_Group*>::iterator name_group = mapOfJunctionGroups.begin();
11651 for ( ; name_group != mapOfJunctionGroups.end(); ++name_group )
11653 if ( name_group->second && name_group->second->GetGroupDS()->IsEmpty() )
11654 myMesh->RemoveGroup( name_group->second->GetGroupDS()->GetID() );
11657 meshDS->CleanDownWardConnectivity(); // Mesh has been modified, downward connectivity is no more usable, free memory
11658 grid->DeleteLinks();
11666 * \brief Double nodes on some external faces and create flat elements.
11667 * Flat elements are mainly used by some types of mechanic calculations.
11669 * Each group of the list must be constituted of faces.
11670 * Triangles are transformed in prisms, and quadrangles in hexahedrons.
11671 * @param theElems - list of groups of faces, where a group of faces is a set of
11672 * SMDS_MeshElements sorted by Id.
11673 * @return TRUE if operation has been completed successfully, FALSE otherwise
11675 bool SMESH_MeshEditor::CreateFlatElementsOnFacesGroups(const std::vector<TIDSortedElemSet>& theElems)
11677 // MESSAGE("-------------------------------------------------");
11678 // MESSAGE("SMESH_MeshEditor::CreateFlatElementsOnFacesGroups");
11679 // MESSAGE("-------------------------------------------------");
11681 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11683 // --- For each group of faces
11684 // duplicate the nodes, create a flat element based on the face
11685 // replace the nodes of the faces by their clones
11687 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> clonedNodes;
11688 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> intermediateNodes;
11689 clonedNodes.clear();
11690 intermediateNodes.clear();
11691 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11692 mapOfJunctionGroups.clear();
11694 for ( size_t idom = 0; idom < theElems.size(); idom++ )
11696 const TIDSortedElemSet& domain = theElems[idom];
11697 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11698 for ( ; elemItr != domain.end(); ++elemItr )
11700 SMDS_MeshElement* anElem = (SMDS_MeshElement*) *elemItr;
11701 SMDS_MeshFace* aFace = dynamic_cast<SMDS_MeshFace*> (anElem);
11704 // MESSAGE("aFace=" << aFace->GetID());
11705 bool isQuad = aFace->IsQuadratic();
11706 vector<const SMDS_MeshNode*> ln0, ln1, ln2, ln3, ln4;
11708 // --- clone the nodes, create intermediate nodes for non medium nodes of a quad face
11710 SMDS_ElemIteratorPtr nodeIt = aFace->nodesIterator();
11711 while (nodeIt->more())
11713 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*> (nodeIt->next());
11714 bool isMedium = isQuad && (aFace->IsMediumNode(node));
11716 ln2.push_back(node);
11718 ln0.push_back(node);
11720 const SMDS_MeshNode* clone = 0;
11721 if (!clonedNodes.count(node))
11723 clone = meshDS->AddNode(node->X(), node->Y(), node->Z());
11724 copyPosition( node, clone );
11725 clonedNodes[node] = clone;
11728 clone = clonedNodes[node];
11731 ln3.push_back(clone);
11733 ln1.push_back(clone);
11735 const SMDS_MeshNode* inter = 0;
11736 if (isQuad && (!isMedium))
11738 if (!intermediateNodes.count(node))
11740 inter = meshDS->AddNode(node->X(), node->Y(), node->Z());
11741 copyPosition( node, inter );
11742 intermediateNodes[node] = inter;
11745 inter = intermediateNodes[node];
11746 ln4.push_back(inter);
11750 // --- extrude the face
11752 vector<const SMDS_MeshNode*> ln;
11753 SMDS_MeshVolume* vol = 0;
11754 vtkIdType aType = aFace->GetVtkType();
11758 vol = meshDS->AddVolume(ln0[2], ln0[1], ln0[0], ln1[2], ln1[1], ln1[0]);
11759 // MESSAGE("vol prism " << vol->GetID());
11760 ln.push_back(ln1[0]);
11761 ln.push_back(ln1[1]);
11762 ln.push_back(ln1[2]);
11765 vol = meshDS->AddVolume(ln0[3], ln0[2], ln0[1], ln0[0], ln1[3], ln1[2], ln1[1], ln1[0]);
11766 // MESSAGE("vol hexa " << vol->GetID());
11767 ln.push_back(ln1[0]);
11768 ln.push_back(ln1[1]);
11769 ln.push_back(ln1[2]);
11770 ln.push_back(ln1[3]);
11772 case VTK_QUADRATIC_TRIANGLE:
11773 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln0[0], ln0[1], ln0[2], ln3[0], ln3[1], ln3[2],
11774 ln2[0], ln2[1], ln2[2], ln4[0], ln4[1], ln4[2]);
11775 // MESSAGE("vol quad prism " << vol->GetID());
11776 ln.push_back(ln1[0]);
11777 ln.push_back(ln1[1]);
11778 ln.push_back(ln1[2]);
11779 ln.push_back(ln3[0]);
11780 ln.push_back(ln3[1]);
11781 ln.push_back(ln3[2]);
11783 case VTK_QUADRATIC_QUAD:
11784 // vol = meshDS->AddVolume(ln0[0], ln0[1], ln0[2], ln0[3], ln1[0], ln1[1], ln1[2], ln1[3],
11785 // ln2[0], ln2[1], ln2[2], ln2[3], ln3[0], ln3[1], ln3[2], ln3[3],
11786 // ln4[0], ln4[1], ln4[2], ln4[3]);
11787 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln1[3], ln0[0], ln0[1], ln0[2], ln0[3],
11788 ln3[0], ln3[1], ln3[2], ln3[3], ln2[0], ln2[1], ln2[2], ln2[3],
11789 ln4[0], ln4[1], ln4[2], ln4[3]);
11790 // MESSAGE("vol quad hexa " << vol->GetID());
11791 ln.push_back(ln1[0]);
11792 ln.push_back(ln1[1]);
11793 ln.push_back(ln1[2]);
11794 ln.push_back(ln1[3]);
11795 ln.push_back(ln3[0]);
11796 ln.push_back(ln3[1]);
11797 ln.push_back(ln3[2]);
11798 ln.push_back(ln3[3]);
11808 stringstream grpname;
11812 string namegrp = grpname.str();
11813 if (!mapOfJunctionGroups.count(namegrp))
11814 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11815 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11817 sgrp->Add(vol->GetID());
11820 // --- modify the face
11822 aFace->ChangeNodes(&ln[0], ln.size());
11829 * \brief identify all the elements around a geom shape, get the faces delimiting the hole
11830 * Build groups of volume to remove, groups of faces to replace on the skin of the object,
11831 * groups of faces to remove inside the object, (idem edges).
11832 * Build ordered list of nodes at the border of each group of faces to replace (to be used to build a geom subshape)
11834 void SMESH_MeshEditor::CreateHoleSkin(double radius,
11835 const TopoDS_Shape& theShape,
11836 SMESH_NodeSearcher* theNodeSearcher,
11837 const char* groupName,
11838 std::vector<double>& nodesCoords,
11839 std::vector<std::vector<int> >& listOfListOfNodes)
11841 // MESSAGE("--------------------------------");
11842 // MESSAGE("SMESH_MeshEditor::CreateHoleSkin");
11843 // MESSAGE("--------------------------------");
11845 // --- zone of volumes to remove is given :
11846 // 1 either by a geom shape (one or more vertices) and a radius,
11847 // 2 either by a group of nodes (representative of the shape)to use with the radius,
11848 // 3 either by a group of nodes where all the elements build on one of this nodes are to remove,
11849 // In the case 2, the group of nodes is an external group of nodes from another mesh,
11850 // In the case 3, the group of nodes is an internal group of the mesh (obtained for instance by a filter),
11851 // defined by it's name.
11853 SMESHDS_GroupBase* groupDS = 0;
11854 SMESH_Mesh::GroupIteratorPtr groupIt = this->myMesh->GetGroups();
11855 while ( groupIt->more() )
11858 SMESH_Group * group = groupIt->next();
11859 if ( !group ) continue;
11860 groupDS = group->GetGroupDS();
11861 if ( !groupDS || groupDS->IsEmpty() ) continue;
11862 std::string grpName = group->GetName();
11863 //MESSAGE("grpName=" << grpName);
11864 if (grpName == groupName)
11870 bool isNodeGroup = false;
11871 bool isNodeCoords = false;
11874 if (groupDS->GetType() != SMDSAbs_Node)
11876 isNodeGroup = true; // a group of nodes exists and it is in this mesh
11879 if (nodesCoords.size() > 0)
11880 isNodeCoords = true; // a list o nodes given by their coordinates
11881 //MESSAGE("---" << isNodeGroup << " " << isNodeCoords);
11883 // --- define groups to build
11885 int idg; // --- group of SMDS volumes
11886 string grpvName = groupName;
11887 grpvName += "_vol";
11888 SMESH_Group *grp = this->myMesh->AddGroup(SMDSAbs_Volume, grpvName.c_str(), idg);
11891 MESSAGE("group not created " << grpvName);
11894 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(grp->GetGroupDS());
11896 int idgs; // --- group of SMDS faces on the skin
11897 string grpsName = groupName;
11898 grpsName += "_skin";
11899 SMESH_Group *grps = this->myMesh->AddGroup(SMDSAbs_Face, grpsName.c_str(), idgs);
11902 MESSAGE("group not created " << grpsName);
11905 SMESHDS_Group *sgrps = dynamic_cast<SMESHDS_Group*>(grps->GetGroupDS());
11907 int idgi; // --- group of SMDS faces internal (several shapes)
11908 string grpiName = groupName;
11909 grpiName += "_internalFaces";
11910 SMESH_Group *grpi = this->myMesh->AddGroup(SMDSAbs_Face, grpiName.c_str(), idgi);
11913 MESSAGE("group not created " << grpiName);
11916 SMESHDS_Group *sgrpi = dynamic_cast<SMESHDS_Group*>(grpi->GetGroupDS());
11918 int idgei; // --- group of SMDS faces internal (several shapes)
11919 string grpeiName = groupName;
11920 grpeiName += "_internalEdges";
11921 SMESH_Group *grpei = this->myMesh->AddGroup(SMDSAbs_Edge, grpeiName.c_str(), idgei);
11924 MESSAGE("group not created " << grpeiName);
11927 SMESHDS_Group *sgrpei = dynamic_cast<SMESHDS_Group*>(grpei->GetGroupDS());
11929 // --- build downward connectivity
11931 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11932 meshDS->BuildDownWardConnectivity(true);
11933 SMDS_UnstructuredGrid* grid = meshDS->getGrid();
11935 // --- set of volumes detected inside
11937 std::set<int> setOfInsideVol;
11938 std::set<int> setOfVolToCheck;
11940 std::vector<gp_Pnt> gpnts;
11943 if (isNodeGroup) // --- a group of nodes is provided : find all the volumes using one or more of this nodes
11945 //MESSAGE("group of nodes provided");
11946 SMDS_ElemIteratorPtr elemIt = groupDS->GetElements();
11947 while ( elemIt->more() )
11949 const SMDS_MeshElement* elem = elemIt->next();
11952 const SMDS_MeshNode* node = dynamic_cast<const SMDS_MeshNode*>(elem);
11955 SMDS_MeshElement* vol = 0;
11956 SMDS_ElemIteratorPtr volItr = node->GetInverseElementIterator(SMDSAbs_Volume);
11957 while (volItr->more())
11959 vol = (SMDS_MeshElement*)volItr->next();
11960 setOfInsideVol.insert(vol->getVtkId());
11961 sgrp->Add(vol->GetID());
11965 else if (isNodeCoords)
11967 //MESSAGE("list of nodes coordinates provided");
11970 while ( i < nodesCoords.size()-2 )
11972 double x = nodesCoords[i++];
11973 double y = nodesCoords[i++];
11974 double z = nodesCoords[i++];
11975 gp_Pnt p = gp_Pnt(x, y ,z);
11976 gpnts.push_back(p);
11977 //MESSAGE("TopoDS_Vertex " << k << " " << p.X() << " " << p.Y() << " " << p.Z());
11981 else // --- no group, no coordinates : use the vertices of the geom shape provided, and radius
11983 //MESSAGE("no group of nodes provided, using vertices from geom shape, and radius");
11984 TopTools_IndexedMapOfShape vertexMap;
11985 TopExp::MapShapes( theShape, TopAbs_VERTEX, vertexMap );
11986 gp_Pnt p = gp_Pnt(0,0,0);
11987 if (vertexMap.Extent() < 1)
11990 for ( int i = 1; i <= vertexMap.Extent(); ++i )
11992 const TopoDS_Vertex& vertex = TopoDS::Vertex( vertexMap( i ));
11993 p = BRep_Tool::Pnt(vertex);
11994 gpnts.push_back(p);
11995 //MESSAGE("TopoDS_Vertex " << i << " " << p.X() << " " << p.Y() << " " << p.Z());
11999 if (gpnts.size() > 0)
12001 const SMDS_MeshNode* startNode = theNodeSearcher->FindClosestTo(gpnts[0]);
12002 //MESSAGE("startNode->nodeId " << nodeId);
12004 double radius2 = radius*radius;
12005 //MESSAGE("radius2 " << radius2);
12007 // --- volumes on start node
12009 setOfVolToCheck.clear();
12010 SMDS_MeshElement* startVol = 0;
12011 SMDS_ElemIteratorPtr volItr = startNode->GetInverseElementIterator(SMDSAbs_Volume);
12012 while (volItr->more())
12014 startVol = (SMDS_MeshElement*)volItr->next();
12015 setOfVolToCheck.insert(startVol->getVtkId());
12017 if (setOfVolToCheck.empty())
12019 MESSAGE("No volumes found");
12023 // --- starting with central volumes then their neighbors, check if they are inside
12024 // or outside the domain, until no more new neighbor volume is inside.
12025 // Fill the group of inside volumes
12027 std::map<int, double> mapOfNodeDistance2;
12028 mapOfNodeDistance2.clear();
12029 std::set<int> setOfOutsideVol;
12030 while (!setOfVolToCheck.empty())
12032 std::set<int>::iterator it = setOfVolToCheck.begin();
12034 //MESSAGE("volume to check, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12035 bool volInside = false;
12036 vtkIdType npts = 0;
12037 vtkIdType* pts = 0;
12038 grid->GetCellPoints(vtkId, npts, pts);
12039 for (int i=0; i<npts; i++)
12041 double distance2 = 0;
12042 if (mapOfNodeDistance2.count(pts[i]))
12044 distance2 = mapOfNodeDistance2[pts[i]];
12045 //MESSAGE("point " << pts[i] << " distance2 " << distance2);
12049 double *coords = grid->GetPoint(pts[i]);
12050 gp_Pnt aPoint = gp_Pnt(coords[0], coords[1], coords[2]);
12052 for ( size_t j = 0; j < gpnts.size(); j++ )
12054 double d2 = aPoint.SquareDistance( gpnts[ j ]);
12055 if (d2 < distance2)
12058 if (distance2 < radius2)
12062 mapOfNodeDistance2[pts[i]] = distance2;
12063 //MESSAGE(" point " << pts[i] << " distance2 " << distance2 << " coords " << coords[0] << " " << coords[1] << " " << coords[2]);
12065 if (distance2 < radius2)
12067 volInside = true; // one or more nodes inside the domain
12068 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12074 setOfInsideVol.insert(vtkId);
12075 //MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12076 int neighborsVtkIds[NBMAXNEIGHBORS];
12077 int downIds[NBMAXNEIGHBORS];
12078 unsigned char downTypes[NBMAXNEIGHBORS];
12079 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12080 for (int n = 0; n < nbNeighbors; n++)
12081 if (!setOfInsideVol.count(neighborsVtkIds[n]) ||setOfOutsideVol.count(neighborsVtkIds[n]))
12082 setOfVolToCheck.insert(neighborsVtkIds[n]);
12086 setOfOutsideVol.insert(vtkId);
12087 //MESSAGE(" volume outside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12089 setOfVolToCheck.erase(vtkId);
12093 // --- for outside hexahedrons, check if they have more than one neighbor volume inside
12094 // If yes, add the volume to the inside set
12096 bool addedInside = true;
12097 std::set<int> setOfVolToReCheck;
12098 while (addedInside)
12100 //MESSAGE(" --------------------------- re check");
12101 addedInside = false;
12102 std::set<int>::iterator itv = setOfInsideVol.begin();
12103 for (; itv != setOfInsideVol.end(); ++itv)
12106 int neighborsVtkIds[NBMAXNEIGHBORS];
12107 int downIds[NBMAXNEIGHBORS];
12108 unsigned char downTypes[NBMAXNEIGHBORS];
12109 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12110 for (int n = 0; n < nbNeighbors; n++)
12111 if (!setOfInsideVol.count(neighborsVtkIds[n]))
12112 setOfVolToReCheck.insert(neighborsVtkIds[n]);
12114 setOfVolToCheck = setOfVolToReCheck;
12115 setOfVolToReCheck.clear();
12116 while (!setOfVolToCheck.empty())
12118 std::set<int>::iterator it = setOfVolToCheck.begin();
12120 if (grid->GetCellType(vtkId) == VTK_HEXAHEDRON)
12122 //MESSAGE("volume to recheck, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12123 int countInside = 0;
12124 int neighborsVtkIds[NBMAXNEIGHBORS];
12125 int downIds[NBMAXNEIGHBORS];
12126 unsigned char downTypes[NBMAXNEIGHBORS];
12127 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12128 for (int n = 0; n < nbNeighbors; n++)
12129 if (setOfInsideVol.count(neighborsVtkIds[n]))
12131 //MESSAGE("countInside " << countInside);
12132 if (countInside > 1)
12134 //MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12135 setOfInsideVol.insert(vtkId);
12136 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12137 addedInside = true;
12140 setOfVolToReCheck.insert(vtkId);
12142 setOfVolToCheck.erase(vtkId);
12146 // --- map of Downward faces at the boundary, inside the global volume
12147 // map of Downward faces on the skin of the global volume (equivalent to SMDS faces on the skin)
12148 // fill group of SMDS faces inside the volume (when several volume shapes)
12149 // fill group of SMDS faces on the skin of the global volume (if skin)
12151 std::map<DownIdType, int, DownIdCompare> boundaryFaces; // boundary faces inside the volume --> corresponding cell
12152 std::map<DownIdType, int, DownIdCompare> skinFaces; // faces on the skin of the global volume --> corresponding cell
12153 std::set<int>::iterator it = setOfInsideVol.begin();
12154 for (; it != setOfInsideVol.end(); ++it)
12157 //MESSAGE(" vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12158 int neighborsVtkIds[NBMAXNEIGHBORS];
12159 int downIds[NBMAXNEIGHBORS];
12160 unsigned char downTypes[NBMAXNEIGHBORS];
12161 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId, true);
12162 for (int n = 0; n < nbNeighbors; n++)
12164 int neighborDim = SMDS_Downward::getCellDimension(grid->GetCellType(neighborsVtkIds[n]));
12165 if (neighborDim == 3)
12167 if (! setOfInsideVol.count(neighborsVtkIds[n])) // neighbor volume is not inside : face is boundary
12169 DownIdType face(downIds[n], downTypes[n]);
12170 boundaryFaces[face] = vtkId;
12172 // if the face between to volumes is in the mesh, get it (internal face between shapes)
12173 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12174 if (vtkFaceId >= 0)
12176 sgrpi->Add(meshDS->fromVtkToSmds(vtkFaceId));
12177 // find also the smds edges on this face
12178 int nbEdges = grid->getDownArray(downTypes[n])->getNumberOfDownCells(downIds[n]);
12179 const int* dEdges = grid->getDownArray(downTypes[n])->getDownCells(downIds[n]);
12180 const unsigned char* dTypes = grid->getDownArray(downTypes[n])->getDownTypes(downIds[n]);
12181 for (int i = 0; i < nbEdges; i++)
12183 int vtkEdgeId = grid->getDownArray(dTypes[i])->getVtkCellId(dEdges[i]);
12184 if (vtkEdgeId >= 0)
12185 sgrpei->Add(meshDS->fromVtkToSmds(vtkEdgeId));
12189 else if (neighborDim == 2) // skin of the volume
12191 DownIdType face(downIds[n], downTypes[n]);
12192 skinFaces[face] = vtkId;
12193 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12194 if (vtkFaceId >= 0)
12195 sgrps->Add(meshDS->fromVtkToSmds(vtkFaceId));
12200 // --- identify the edges constituting the wire of each subshape on the skin
12201 // define polylines with the nodes of edges, equivalent to wires
12202 // project polylines on subshapes, and partition, to get geom faces
12204 std::map<int, std::set<int> > shapeIdToVtkIdSet; // shapeId --> set of vtkId on skin
12205 std::set<int> emptySet;
12207 std::set<int> shapeIds;
12209 SMDS_ElemIteratorPtr itelem = sgrps->GetElements();
12210 while (itelem->more())
12212 const SMDS_MeshElement *elem = itelem->next();
12213 int shapeId = elem->getshapeId();
12214 int vtkId = elem->getVtkId();
12215 if (!shapeIdToVtkIdSet.count(shapeId))
12217 shapeIdToVtkIdSet[shapeId] = emptySet;
12218 shapeIds.insert(shapeId);
12220 shapeIdToVtkIdSet[shapeId].insert(vtkId);
12223 std::map<int, std::set<DownIdType, DownIdCompare> > shapeIdToEdges; // shapeId --> set of downward edges
12224 std::set<DownIdType, DownIdCompare> emptyEdges;
12225 emptyEdges.clear();
12227 std::map<int, std::set<int> >::iterator itShape = shapeIdToVtkIdSet.begin();
12228 for (; itShape != shapeIdToVtkIdSet.end(); ++itShape)
12230 int shapeId = itShape->first;
12231 //MESSAGE(" --- Shape ID --- "<< shapeId);
12232 shapeIdToEdges[shapeId] = emptyEdges;
12234 std::vector<int> nodesEdges;
12236 std::set<int>::iterator its = itShape->second.begin();
12237 for (; its != itShape->second.end(); ++its)
12240 //MESSAGE(" " << vtkId);
12241 int neighborsVtkIds[NBMAXNEIGHBORS];
12242 int downIds[NBMAXNEIGHBORS];
12243 unsigned char downTypes[NBMAXNEIGHBORS];
12244 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12245 for (int n = 0; n < nbNeighbors; n++)
12247 if (neighborsVtkIds[n]<0) // only smds faces are considered as neighbors here
12249 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
12250 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
12251 if ( shapeIds.count(elem->getshapeId()) && !sgrps->Contains(elem)) // edge : neighbor in the set of shape, not in the group
12253 DownIdType edge(downIds[n], downTypes[n]);
12254 if (!shapeIdToEdges[shapeId].count(edge))
12256 shapeIdToEdges[shapeId].insert(edge);
12258 int nbNodes = grid->getDownArray(downTypes[n])->getNodes(downIds[n],vtkNodeId);
12259 nodesEdges.push_back(vtkNodeId[0]);
12260 nodesEdges.push_back(vtkNodeId[nbNodes-1]);
12261 //MESSAGE(" --- nodes " << vtkNodeId[0]+1 << " " << vtkNodeId[nbNodes-1]+1);
12267 std::list<int> order;
12269 if (nodesEdges.size() > 0)
12271 order.push_back(nodesEdges[0]); //MESSAGE(" --- back " << order.back()+1); // SMDS id = VTK id + 1;
12272 nodesEdges[0] = -1;
12273 order.push_back(nodesEdges[1]); //MESSAGE(" --- back " << order.back()+1);
12274 nodesEdges[1] = -1; // do not reuse this edge
12278 int nodeTofind = order.back(); // try first to push back
12280 for ( i = 0; i < (int)nodesEdges.size(); i++ )
12281 if (nodesEdges[i] == nodeTofind)
12283 if ( i == (int) nodesEdges.size() )
12284 found = false; // no follower found on back
12287 if (i%2) // odd ==> use the previous one
12288 if (nodesEdges[i-1] < 0)
12292 order.push_back(nodesEdges[i-1]); //MESSAGE(" --- back " << order.back()+1);
12293 nodesEdges[i-1] = -1;
12295 else // even ==> use the next one
12296 if (nodesEdges[i+1] < 0)
12300 order.push_back(nodesEdges[i+1]); //MESSAGE(" --- back " << order.back()+1);
12301 nodesEdges[i+1] = -1;
12306 // try to push front
12308 nodeTofind = order.front(); // try to push front
12309 for ( i = 0; i < (int)nodesEdges.size(); i++ )
12310 if ( nodesEdges[i] == nodeTofind )
12312 if ( i == (int)nodesEdges.size() )
12314 found = false; // no predecessor found on front
12317 if (i%2) // odd ==> use the previous one
12318 if (nodesEdges[i-1] < 0)
12322 order.push_front(nodesEdges[i-1]); //MESSAGE(" --- front " << order.front()+1);
12323 nodesEdges[i-1] = -1;
12325 else // even ==> use the next one
12326 if (nodesEdges[i+1] < 0)
12330 order.push_front(nodesEdges[i+1]); //MESSAGE(" --- front " << order.front()+1);
12331 nodesEdges[i+1] = -1;
12337 std::vector<int> nodes;
12338 nodes.push_back(shapeId);
12339 std::list<int>::iterator itl = order.begin();
12340 for (; itl != order.end(); itl++)
12342 nodes.push_back((*itl) + 1); // SMDS id = VTK id + 1;
12343 //MESSAGE(" ordered node " << nodes[nodes.size()-1]);
12345 listOfListOfNodes.push_back(nodes);
12348 // partition geom faces with blocFissure
12349 // mesh blocFissure and geom faces of the skin (external wires given, triangle algo to choose)
12350 // mesh volume around blocFissure (skin triangles and quadrangle given, tetra algo to choose)
12356 //================================================================================
12358 * \brief Generates skin mesh (containing 2D cells) from 3D mesh
12359 * The created 2D mesh elements based on nodes of free faces of boundary volumes
12360 * \return TRUE if operation has been completed successfully, FALSE otherwise
12362 //================================================================================
12364 bool SMESH_MeshEditor::Make2DMeshFrom3D()
12366 // iterates on volume elements and detect all free faces on them
12367 SMESHDS_Mesh* aMesh = GetMeshDS();
12371 ElemFeatures faceType( SMDSAbs_Face );
12372 int nbFree = 0, nbExisted = 0, nbCreated = 0;
12373 SMDS_VolumeIteratorPtr vIt = aMesh->volumesIterator();
12376 const SMDS_MeshVolume* volume = vIt->next();
12377 SMDS_VolumeTool vTool( volume, /*ignoreCentralNodes=*/false );
12378 vTool.SetExternalNormal();
12379 const int iQuad = volume->IsQuadratic();
12380 faceType.SetQuad( iQuad );
12381 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12383 if (!vTool.IsFreeFace(iface))
12386 vector<const SMDS_MeshNode *> nodes;
12387 int nbFaceNodes = vTool.NbFaceNodes(iface);
12388 const SMDS_MeshNode** faceNodes = vTool.GetFaceNodes(iface);
12390 for ( ; inode < nbFaceNodes; inode += iQuad+1)
12391 nodes.push_back(faceNodes[inode]);
12393 if (iQuad) // add medium nodes
12395 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12396 nodes.push_back(faceNodes[inode]);
12397 if ( nbFaceNodes == 9 ) // bi-quadratic quad
12398 nodes.push_back(faceNodes[8]);
12400 // add new face based on volume nodes
12401 if (aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false) )
12403 nbExisted++; // face already exsist
12407 AddElement( nodes, faceType.SetPoly( nbFaceNodes/(iQuad+1) > 4 ));
12412 return ( nbFree == ( nbExisted + nbCreated ));
12417 inline const SMDS_MeshNode* getNodeWithSameID(SMESHDS_Mesh* mesh, const SMDS_MeshNode* node)
12419 if ( const SMDS_MeshNode* n = mesh->FindNode( node->GetID() ))
12421 return mesh->AddNodeWithID( node->X(),node->Y(),node->Z(), node->GetID() );
12424 //================================================================================
12426 * \brief Creates missing boundary elements
12427 * \param elements - elements whose boundary is to be checked
12428 * \param dimension - defines type of boundary elements to create
12429 * \param group - a group to store created boundary elements in
12430 * \param targetMesh - a mesh to store created boundary elements in
12431 * \param toCopyElements - if true, the checked elements will be copied into the targetMesh
12432 * \param toCopyExistingBoundary - if true, not only new but also pre-existing
12433 * boundary elements will be copied into the targetMesh
12434 * \param toAddExistingBondary - if true, not only new but also pre-existing
12435 * boundary elements will be added into the new group
12436 * \param aroundElements - if true, elements will be created on boundary of given
12437 * elements else, on boundary of the whole mesh.
12438 * \return nb of added boundary elements
12440 //================================================================================
12442 int SMESH_MeshEditor::MakeBoundaryMesh(const TIDSortedElemSet& elements,
12443 Bnd_Dimension dimension,
12444 SMESH_Group* group/*=0*/,
12445 SMESH_Mesh* targetMesh/*=0*/,
12446 bool toCopyElements/*=false*/,
12447 bool toCopyExistingBoundary/*=false*/,
12448 bool toAddExistingBondary/*= false*/,
12449 bool aroundElements/*= false*/)
12451 SMDSAbs_ElementType missType = (dimension == BND_2DFROM3D) ? SMDSAbs_Face : SMDSAbs_Edge;
12452 SMDSAbs_ElementType elemType = (dimension == BND_1DFROM2D) ? SMDSAbs_Face : SMDSAbs_Volume;
12453 // hope that all elements are of the same type, do not check them all
12454 if ( !elements.empty() && (*elements.begin())->GetType() != elemType )
12455 throw SALOME_Exception(LOCALIZED("wrong element type"));
12458 toCopyElements = toCopyExistingBoundary = false;
12460 SMESH_MeshEditor tgtEditor( targetMesh ? targetMesh : myMesh );
12461 SMESHDS_Mesh* aMesh = GetMeshDS(), *tgtMeshDS = tgtEditor.GetMeshDS();
12462 int nbAddedBnd = 0;
12464 // editor adding present bnd elements and optionally holding elements to add to the group
12465 SMESH_MeshEditor* presentEditor;
12466 SMESH_MeshEditor tgtEditor2( tgtEditor.GetMesh() );
12467 presentEditor = toAddExistingBondary ? &tgtEditor : &tgtEditor2;
12469 SMESH_MesherHelper helper( *myMesh );
12470 const TopAbs_ShapeEnum missShapeType = ( missType==SMDSAbs_Face ? TopAbs_FACE : TopAbs_EDGE );
12471 SMDS_VolumeTool vTool;
12472 TIDSortedElemSet avoidSet;
12473 const TIDSortedElemSet emptySet, *elemSet = aroundElements ? &elements : &emptySet;
12476 typedef vector<const SMDS_MeshNode*> TConnectivity;
12477 TConnectivity tgtNodes;
12478 ElemFeatures elemKind( missType ), elemToCopy;
12480 vector<const SMDS_MeshElement*> presentBndElems;
12481 vector<TConnectivity> missingBndElems;
12482 vector<int> freeFacets;
12483 TConnectivity nodes, elemNodes;
12485 SMDS_ElemIteratorPtr eIt;
12486 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12487 else eIt = elemSetIterator( elements );
12489 while (eIt->more())
12491 const SMDS_MeshElement* elem = eIt->next();
12492 const int iQuad = elem->IsQuadratic();
12493 elemKind.SetQuad( iQuad );
12495 // ------------------------------------------------------------------------------------
12496 // 1. For an elem, get present bnd elements and connectivities of missing bnd elements
12497 // ------------------------------------------------------------------------------------
12498 presentBndElems.clear();
12499 missingBndElems.clear();
12500 freeFacets.clear(); nodes.clear(); elemNodes.clear();
12501 if ( vTool.Set(elem, /*ignoreCentralNodes=*/true) ) // elem is a volume --------------
12503 const SMDS_MeshElement* otherVol = 0;
12504 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12506 if ( !vTool.IsFreeFace(iface, &otherVol) &&
12507 ( !aroundElements || elements.count( otherVol )))
12509 freeFacets.push_back( iface );
12511 if ( missType == SMDSAbs_Face )
12512 vTool.SetExternalNormal();
12513 for ( size_t i = 0; i < freeFacets.size(); ++i )
12515 int iface = freeFacets[i];
12516 const SMDS_MeshNode** nn = vTool.GetFaceNodes(iface);
12517 const size_t nbFaceNodes = vTool.NbFaceNodes (iface);
12518 if ( missType == SMDSAbs_Edge ) // boundary edges
12520 nodes.resize( 2+iQuad );
12521 for ( size_t i = 0; i < nbFaceNodes; i += 1+iQuad )
12523 for ( size_t j = 0; j < nodes.size(); ++j )
12524 nodes[ j ] = nn[ i+j ];
12525 if ( const SMDS_MeshElement* edge =
12526 aMesh->FindElement( nodes, SMDSAbs_Edge, /*noMedium=*/false ))
12527 presentBndElems.push_back( edge );
12529 missingBndElems.push_back( nodes );
12532 else // boundary face
12535 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12536 nodes.push_back( nn[inode] ); // add corner nodes
12538 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12539 nodes.push_back( nn[inode] ); // add medium nodes
12540 int iCenter = vTool.GetCenterNodeIndex(iface); // for HEX27
12542 nodes.push_back( vTool.GetNodes()[ iCenter ] );
12544 if (const SMDS_MeshElement * f = aMesh->FindElement( nodes,
12545 SMDSAbs_Face, /*noMedium=*/false ))
12546 presentBndElems.push_back( f );
12548 missingBndElems.push_back( nodes );
12550 if ( targetMesh != myMesh )
12552 // add 1D elements on face boundary to be added to a new mesh
12553 const SMDS_MeshElement* edge;
12554 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12557 edge = aMesh->FindEdge( nn[inode], nn[inode+1], nn[inode+2]);
12559 edge = aMesh->FindEdge( nn[inode], nn[inode+1]);
12560 if ( edge && avoidSet.insert( edge ).second )
12561 presentBndElems.push_back( edge );
12567 else if ( elem->GetType() == SMDSAbs_Face ) // elem is a face ------------------------
12569 avoidSet.clear(), avoidSet.insert( elem );
12570 elemNodes.assign( SMDS_MeshElement::iterator( elem->interlacedNodesElemIterator() ),
12571 SMDS_MeshElement::iterator() );
12572 elemNodes.push_back( elemNodes[0] );
12573 nodes.resize( 2 + iQuad );
12574 const int nbLinks = elem->NbCornerNodes();
12575 for ( int i = 0, iN = 0; i < nbLinks; i++, iN += 1+iQuad )
12577 nodes[0] = elemNodes[iN];
12578 nodes[1] = elemNodes[iN+1+iQuad];
12579 if ( SMESH_MeshAlgos::FindFaceInSet( nodes[0], nodes[1], *elemSet, avoidSet))
12580 continue; // not free link
12582 if ( iQuad ) nodes[2] = elemNodes[iN+1];
12583 if ( const SMDS_MeshElement* edge =
12584 aMesh->FindElement(nodes,SMDSAbs_Edge,/*noMedium=*/false))
12585 presentBndElems.push_back( edge );
12587 missingBndElems.push_back( nodes );
12591 // ---------------------------------
12592 // 2. Add missing boundary elements
12593 // ---------------------------------
12594 if ( targetMesh != myMesh )
12595 // instead of making a map of nodes in this mesh and targetMesh,
12596 // we create nodes with same IDs.
12597 for ( size_t i = 0; i < missingBndElems.size(); ++i )
12599 TConnectivity& srcNodes = missingBndElems[i];
12600 tgtNodes.resize( srcNodes.size() );
12601 for ( inode = 0; inode < srcNodes.size(); ++inode )
12602 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, srcNodes[inode] );
12603 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( tgtNodes,
12605 /*noMedium=*/false))
12607 tgtEditor.AddElement( tgtNodes, elemKind.SetPoly( tgtNodes.size()/(iQuad+1) > 4 ));
12611 for ( size_t i = 0; i < missingBndElems.size(); ++i )
12613 TConnectivity& nodes = missingBndElems[ i ];
12614 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( nodes,
12616 /*noMedium=*/false))
12618 SMDS_MeshElement* newElem =
12619 tgtEditor.AddElement( nodes, elemKind.SetPoly( nodes.size()/(iQuad+1) > 4 ));
12620 nbAddedBnd += bool( newElem );
12622 // try to set a new element to a shape
12623 if ( myMesh->HasShapeToMesh() )
12626 set< pair<TopAbs_ShapeEnum, int > > mediumShapes;
12627 const size_t nbN = nodes.size() / (iQuad+1 );
12628 for ( inode = 0; inode < nbN && ok; ++inode )
12630 pair<int, TopAbs_ShapeEnum> i_stype =
12631 helper.GetMediumPos( nodes[inode], nodes[(inode+1)%nbN]);
12632 if (( ok = ( i_stype.first > 0 && i_stype.second >= TopAbs_FACE )))
12633 mediumShapes.insert( make_pair ( i_stype.second, i_stype.first ));
12635 if ( ok && mediumShapes.size() > 1 )
12637 set< pair<TopAbs_ShapeEnum, int > >::iterator stype_i = mediumShapes.begin();
12638 pair<TopAbs_ShapeEnum, int> stype_i_0 = *stype_i;
12639 for ( ++stype_i; stype_i != mediumShapes.end() && ok; ++stype_i )
12641 if (( ok = ( stype_i->first != stype_i_0.first )))
12642 ok = helper.IsSubShape( aMesh->IndexToShape( stype_i->second ),
12643 aMesh->IndexToShape( stype_i_0.second ));
12646 if ( ok && mediumShapes.begin()->first == missShapeType )
12647 aMesh->SetMeshElementOnShape( newElem, mediumShapes.begin()->second );
12651 // ----------------------------------
12652 // 3. Copy present boundary elements
12653 // ----------------------------------
12654 if ( toCopyExistingBoundary )
12655 for ( size_t i = 0 ; i < presentBndElems.size(); ++i )
12657 const SMDS_MeshElement* e = presentBndElems[i];
12658 tgtNodes.resize( e->NbNodes() );
12659 for ( inode = 0; inode < tgtNodes.size(); ++inode )
12660 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, e->GetNode(inode) );
12661 presentEditor->AddElement( tgtNodes, elemToCopy.Init( e ));
12663 else // store present elements to add them to a group
12664 for ( size_t i = 0 ; i < presentBndElems.size(); ++i )
12666 presentEditor->myLastCreatedElems.Append( presentBndElems[ i ]);
12669 } // loop on given elements
12671 // ---------------------------------------------
12672 // 4. Fill group with boundary elements
12673 // ---------------------------------------------
12676 if ( SMESHDS_Group* g = dynamic_cast<SMESHDS_Group*>( group->GetGroupDS() ))
12677 for ( int i = 0; i < tgtEditor.myLastCreatedElems.Size(); ++i )
12678 g->SMDSGroup().Add( tgtEditor.myLastCreatedElems( i+1 ));
12680 tgtEditor.myLastCreatedElems.Clear();
12681 tgtEditor2.myLastCreatedElems.Clear();
12683 // -----------------------
12684 // 5. Copy given elements
12685 // -----------------------
12686 if ( toCopyElements && targetMesh != myMesh )
12688 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12689 else eIt = elemSetIterator( elements );
12690 while (eIt->more())
12692 const SMDS_MeshElement* elem = eIt->next();
12693 tgtNodes.resize( elem->NbNodes() );
12694 for ( inode = 0; inode < tgtNodes.size(); ++inode )
12695 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, elem->GetNode(inode) );
12696 tgtEditor.AddElement( tgtNodes, elemToCopy.Init( elem ));
12698 tgtEditor.myLastCreatedElems.Clear();
12704 //================================================================================
12706 * \brief Copy node position and set \a to node on the same geometry
12708 //================================================================================
12710 void SMESH_MeshEditor::copyPosition( const SMDS_MeshNode* from,
12711 const SMDS_MeshNode* to )
12713 if ( !from || !to ) return;
12715 SMDS_PositionPtr pos = from->GetPosition();
12716 if ( !pos || from->getshapeId() < 1 ) return;
12718 switch ( pos->GetTypeOfPosition() )
12720 case SMDS_TOP_3DSPACE: break;
12722 case SMDS_TOP_FACE:
12724 const SMDS_FacePosition* fPos = static_cast< const SMDS_FacePosition* >( pos );
12725 GetMeshDS()->SetNodeOnFace( to, from->getshapeId(),
12726 fPos->GetUParameter(), fPos->GetVParameter() );
12729 case SMDS_TOP_EDGE:
12731 // WARNING: it is dangerous to set equal nodes on one EDGE!!!!!!!!
12732 const SMDS_EdgePosition* ePos = static_cast< const SMDS_EdgePosition* >( pos );
12733 GetMeshDS()->SetNodeOnEdge( to, from->getshapeId(), ePos->GetUParameter() );
12736 case SMDS_TOP_VERTEX:
12738 GetMeshDS()->SetNodeOnVertex( to, from->getshapeId() );
12741 case SMDS_TOP_UNSPEC: