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 sould 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 discribed 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 seach 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 achived --");
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 : auxilary 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 : auxilary 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)
7350 myLastCreatedElems.Clear();
7351 myLastCreatedNodes.Clear();
7353 SMESHDS_Mesh* aMesh = GetMeshDS();
7355 TNodeNodeMap nodeNodeMap; // node to replace - new node
7356 set<const SMDS_MeshElement*> elems; // all elements with changed nodes
7357 list< int > rmElemIds, rmNodeIds;
7359 // Fill nodeNodeMap and elems
7361 TListOfListOfNodes::iterator grIt = theGroupsOfNodes.begin();
7362 for ( ; grIt != theGroupsOfNodes.end(); grIt++ )
7364 list<const SMDS_MeshNode*>& nodes = *grIt;
7365 list<const SMDS_MeshNode*>::iterator nIt = nodes.begin();
7366 const SMDS_MeshNode* nToKeep = *nIt;
7367 for ( ++nIt; nIt != nodes.end(); nIt++ )
7369 const SMDS_MeshNode* nToRemove = *nIt;
7370 nodeNodeMap.insert( make_pair( nToRemove, nToKeep ));
7371 if ( nToRemove != nToKeep )
7373 rmNodeIds.push_back( nToRemove->GetID() );
7374 AddToSameGroups( nToKeep, nToRemove, aMesh );
7375 // set _alwaysComputed to a sub-mesh of VERTEX to enable mesh computing
7376 // after MergeNodes() w/o creating node in place of merged ones.
7377 const SMDS_PositionPtr& pos = nToRemove->GetPosition();
7378 if ( pos && pos->GetTypeOfPosition() == SMDS_TOP_VERTEX )
7379 if ( SMESH_subMesh* sm = myMesh->GetSubMeshContaining( nToRemove->getshapeId() ))
7380 sm->SetIsAlwaysComputed( true );
7382 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
7383 while ( invElemIt->more() ) {
7384 const SMDS_MeshElement* elem = invElemIt->next();
7389 // Change element nodes or remove an element
7391 set<const SMDS_MeshNode*> nodeSet;
7392 vector< const SMDS_MeshNode*> curNodes, uniqueNodes;
7394 ElemFeatures elemType;
7396 set<const SMDS_MeshElement*>::iterator eIt = elems.begin();
7397 for ( ; eIt != elems.end(); eIt++ )
7399 const SMDS_MeshElement* elem = *eIt;
7400 const int nbNodes = elem->NbNodes();
7401 const int aShapeId = FindShape( elem );
7402 SMDSAbs_EntityType entity = elem->GetEntityType();
7405 curNodes.resize( nbNodes );
7406 uniqueNodes.resize( nbNodes );
7407 iRepl.resize( nbNodes );
7408 int iUnique = 0, iCur = 0, nbRepl = 0;
7410 // get new seq of nodes
7411 SMDS_ElemIteratorPtr itN = elem->nodesIterator();
7412 while ( itN->more() )
7414 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( itN->next() );
7416 TNodeNodeMap::iterator nnIt = nodeNodeMap.find( n );
7417 if ( nnIt != nodeNodeMap.end() ) { // n sticks
7419 { ////////// BUG 0020185: begin
7420 bool stopRecur = false;
7421 set<const SMDS_MeshNode*> nodesRecur;
7422 nodesRecur.insert(n);
7423 while (!stopRecur) {
7424 TNodeNodeMap::iterator nnIt_i = nodeNodeMap.find( n );
7425 if ( nnIt_i != nodeNodeMap.end() ) { // n sticks
7426 n = (*nnIt_i).second;
7427 if (!nodesRecur.insert(n).second) {
7428 // error: recursive dependency
7435 } ////////// BUG 0020185: end
7437 curNodes[ iCur ] = n;
7438 bool isUnique = nodeSet.insert( n ).second;
7440 uniqueNodes[ iUnique++ ] = n;
7442 iRepl[ nbRepl++ ] = iCur;
7446 // Analyse element topology after replacement
7449 int nbUniqueNodes = nodeSet.size();
7450 if ( nbNodes != nbUniqueNodes ) // some nodes stick
7452 if ( elem->IsPoly() ) // Polygons and Polyhedral volumes
7454 if ( elem->GetType() == SMDSAbs_Face ) // Polygon
7456 elemType.Init( elem );
7457 const bool isQuad = elemType.myIsQuad;
7459 SMDS_MeshCell::applyInterlace // interlace medium and corner nodes
7460 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon, nbNodes ), curNodes );
7462 // a polygon can divide into several elements
7463 vector<const SMDS_MeshNode *> polygons_nodes;
7464 vector<int> quantities;
7465 int nbNew = SimplifyFace( curNodes, polygons_nodes, quantities );
7468 vector<const SMDS_MeshNode *> face_nodes;
7470 for (int iface = 0; iface < nbNew; iface++)
7472 int nbNewNodes = quantities[iface];
7473 face_nodes.assign( polygons_nodes.begin() + inode,
7474 polygons_nodes.begin() + inode + nbNewNodes );
7475 inode += nbNewNodes;
7476 if ( isQuad ) // check if a result elem is a valid quadratic polygon
7478 bool isValid = ( nbNewNodes % 2 == 0 );
7479 for ( int i = 0; i < nbNewNodes && isValid; ++i )
7480 isValid = ( elem->IsMediumNode( face_nodes[i]) == bool( i % 2 ));
7481 elemType.SetQuad( isValid );
7482 if ( isValid ) // put medium nodes after corners
7483 SMDS_MeshCell::applyInterlaceRev
7484 ( SMDS_MeshCell::interlacedSmdsOrder( SMDSEntity_Quad_Polygon,
7485 nbNewNodes ), face_nodes );
7487 elemType.SetPoly(( nbNewNodes / ( elemType.myIsQuad + 1 ) > 4 ));
7489 SMDS_MeshElement* newElem = AddElement( face_nodes, elemType.SetID(-1));
7491 aMesh->SetMeshElementOnShape(newElem, aShapeId);
7494 rmElemIds.push_back(elem->GetID());
7498 else if ( elem->GetType() == SMDSAbs_Volume ) // Polyhedral volume
7500 if ( nbUniqueNodes < 4 ) {
7501 rmElemIds.push_back(elem->GetID());
7504 // each face has to be analyzed in order to check volume validity
7505 const SMDS_VtkVolume* aPolyedre = dynamic_cast<const SMDS_VtkVolume*>( elem );
7508 int nbFaces = aPolyedre->NbFaces();
7510 vector<const SMDS_MeshNode *> poly_nodes;
7511 vector<int> quantities;
7512 vector<const SMDS_MeshNode *> faceNodes;
7514 for (int iface = 1; iface <= nbFaces; iface++)
7516 int nbFaceNodes = aPolyedre->NbFaceNodes(iface);
7517 faceNodes.resize( nbFaceNodes );
7518 for (int inode = 1; inode <= nbFaceNodes; inode++)
7520 const SMDS_MeshNode * faceNode = aPolyedre->GetFaceNode(iface, inode);
7521 TNodeNodeMap::iterator nnIt = nodeNodeMap.find(faceNode);
7522 if ( nnIt != nodeNodeMap.end() ) // faceNode sticks
7523 faceNode = (*nnIt).second;
7524 faceNodes[inode - 1] = faceNode;
7526 SimplifyFace(faceNodes, poly_nodes, quantities);
7529 if ( quantities.size() > 3 ) {
7530 // TODO: remove coincident faces
7533 if ( quantities.size() > 3 )
7535 const SMDS_MeshElement* newElem =
7536 aMesh->AddPolyhedralVolume( poly_nodes, quantities );
7537 myLastCreatedElems.Append( newElem );
7538 if ( aShapeId && newElem )
7539 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7540 rmElemIds.push_back( elem->GetID() );
7544 rmElemIds.push_back( elem->GetID() );
7555 // TODO not all the possible cases are solved. Find something more generic?
7557 case SMDSEntity_Edge: //////// EDGE
7558 case SMDSEntity_Triangle: //// TRIANGLE
7559 case SMDSEntity_Quad_Triangle:
7560 case SMDSEntity_Tetra:
7561 case SMDSEntity_Quad_Tetra: // TETRAHEDRON
7566 case SMDSEntity_Quad_Edge:
7568 isOk = false; // to linear EDGE ???????
7571 case SMDSEntity_Quadrangle: //////////////////////////////////// QUADRANGLE
7573 if ( nbUniqueNodes < 3 )
7575 else if ( nbRepl == 1 && curNodes[ iRepl[0]] == curNodes[( iRepl[0]+2 )%4 ])
7576 isOk = false; // opposite nodes stick
7579 case SMDSEntity_Quad_Quadrangle: // Quadratic QUADRANGLE
7588 if (( nbUniqueNodes == 6 && nbRepl == 2 ) &&
7589 (( iRepl[0] == 1 && iRepl[1] == 4 && curNodes[1] == curNodes[0] ) ||
7590 ( iRepl[0] == 2 && iRepl[1] == 5 && curNodes[2] == curNodes[1] ) ||
7591 ( iRepl[0] == 3 && iRepl[1] == 6 && curNodes[3] == curNodes[2] ) ||
7592 ( iRepl[0] == 3 && iRepl[1] == 7 && curNodes[3] == curNodes[0] )))
7598 case SMDSEntity_BiQuad_Quadrangle: // Bi-Quadratic QUADRANGLE
7607 if (( nbUniqueNodes == 7 && nbRepl == 2 && iRepl[1] != 8 ) &&
7608 (( iRepl[0] == 1 && iRepl[1] == 4 && curNodes[1] == curNodes[0] ) ||
7609 ( iRepl[0] == 2 && iRepl[1] == 5 && curNodes[2] == curNodes[1] ) ||
7610 ( iRepl[0] == 3 && iRepl[1] == 6 && curNodes[3] == curNodes[2] ) ||
7611 ( iRepl[0] == 3 && iRepl[1] == 7 && curNodes[3] == curNodes[0] )))
7617 case SMDSEntity_Penta: ///////////////////////////////////// PENTAHEDRON
7620 if ( nbUniqueNodes == 4 ) {
7621 // ---------------------------------> tetrahedron
7622 if ( curNodes[3] == curNodes[4] &&
7623 curNodes[3] == curNodes[5] ) {
7627 else if ( curNodes[0] == curNodes[1] &&
7628 curNodes[0] == curNodes[2] ) {
7629 // bottom nodes stick: set a top before
7630 uniqueNodes[ 3 ] = uniqueNodes [ 0 ];
7631 uniqueNodes[ 0 ] = curNodes [ 5 ];
7632 uniqueNodes[ 1 ] = curNodes [ 4 ];
7633 uniqueNodes[ 2 ] = curNodes [ 3 ];
7636 else if (( curNodes[0] == curNodes[3] ) +
7637 ( curNodes[1] == curNodes[4] ) +
7638 ( curNodes[2] == curNodes[5] ) == 2 ) {
7639 // a lateral face turns into a line
7643 else if ( nbUniqueNodes == 5 ) {
7644 // PENTAHEDRON --------------------> pyramid
7645 if ( curNodes[0] == curNodes[3] )
7647 uniqueNodes[ 0 ] = curNodes[ 1 ];
7648 uniqueNodes[ 1 ] = curNodes[ 4 ];
7649 uniqueNodes[ 2 ] = curNodes[ 5 ];
7650 uniqueNodes[ 3 ] = curNodes[ 2 ];
7651 uniqueNodes[ 4 ] = curNodes[ 0 ];
7654 if ( curNodes[1] == curNodes[4] )
7656 uniqueNodes[ 0 ] = curNodes[ 0 ];
7657 uniqueNodes[ 1 ] = curNodes[ 2 ];
7658 uniqueNodes[ 2 ] = curNodes[ 5 ];
7659 uniqueNodes[ 3 ] = curNodes[ 3 ];
7660 uniqueNodes[ 4 ] = curNodes[ 1 ];
7663 if ( curNodes[2] == curNodes[5] )
7665 uniqueNodes[ 0 ] = curNodes[ 0 ];
7666 uniqueNodes[ 1 ] = curNodes[ 3 ];
7667 uniqueNodes[ 2 ] = curNodes[ 4 ];
7668 uniqueNodes[ 3 ] = curNodes[ 1 ];
7669 uniqueNodes[ 4 ] = curNodes[ 2 ];
7675 case SMDSEntity_Hexa:
7677 //////////////////////////////////// HEXAHEDRON
7679 SMDS_VolumeTool hexa (elem);
7680 hexa.SetExternalNormal();
7681 if ( nbUniqueNodes == 4 && nbRepl == 4 ) {
7682 //////////////////////// HEX ---> tetrahedron
7683 for ( int iFace = 0; iFace < 6; iFace++ ) {
7684 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7685 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7686 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7687 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7688 // one face turns into a point ...
7689 int pickInd = ind[ 0 ];
7690 int iOppFace = hexa.GetOppFaceIndex( iFace );
7691 ind = hexa.GetFaceNodesIndices( iOppFace );
7693 uniqueNodes.clear();
7694 for ( iCur = 0; iCur < 4 && nbStick < 2; iCur++ ) {
7695 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7698 uniqueNodes.push_back( curNodes[ind[ iCur ]]);
7700 if ( nbStick == 1 ) {
7701 // ... and the opposite one - into a triangle.
7703 uniqueNodes.push_back( curNodes[ pickInd ]);
7710 else if ( nbUniqueNodes == 6 && nbRepl == 2 ) {
7711 //////////////////////// HEX ---> prism
7712 int nbTria = 0, iTria[3];
7713 const int *ind; // indices of face nodes
7714 // look for triangular faces
7715 for ( int iFace = 0; iFace < 6 && nbTria < 3; iFace++ ) {
7716 ind = hexa.GetFaceNodesIndices( iFace );
7717 TIDSortedNodeSet faceNodes;
7718 for ( iCur = 0; iCur < 4; iCur++ )
7719 faceNodes.insert( curNodes[ind[iCur]] );
7720 if ( faceNodes.size() == 3 )
7721 iTria[ nbTria++ ] = iFace;
7723 // check if triangles are opposite
7724 if ( nbTria == 2 && iTria[0] == hexa.GetOppFaceIndex( iTria[1] ))
7726 // set nodes of the bottom triangle
7727 ind = hexa.GetFaceNodesIndices( iTria[ 0 ]);
7729 for ( iCur = 0; iCur < 4; iCur++ )
7730 if ( ind[iCur] != iRepl[0] && ind[iCur] != iRepl[1])
7731 indB.push_back( ind[iCur] );
7732 if ( !hexa.IsForward() )
7733 std::swap( indB[0], indB[2] );
7734 for ( iCur = 0; iCur < 3; iCur++ )
7735 uniqueNodes[ iCur ] = curNodes[indB[iCur]];
7736 // set nodes of the top triangle
7737 const int *indT = hexa.GetFaceNodesIndices( iTria[ 1 ]);
7738 for ( iCur = 0; iCur < 3; ++iCur )
7739 for ( int j = 0; j < 4; ++j )
7740 if ( hexa.IsLinked( indB[ iCur ], indT[ j ] ))
7742 uniqueNodes[ iCur + 3 ] = curNodes[ indT[ j ]];
7749 else if (nbUniqueNodes == 5 && nbRepl == 3 ) {
7750 //////////////////// HEXAHEDRON ---> pyramid
7751 for ( int iFace = 0; iFace < 6; iFace++ ) {
7752 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7753 if (curNodes[ind[ 0 ]] == curNodes[ind[ 1 ]] &&
7754 curNodes[ind[ 0 ]] == curNodes[ind[ 2 ]] &&
7755 curNodes[ind[ 0 ]] == curNodes[ind[ 3 ]] ) {
7756 // one face turns into a point ...
7757 int iOppFace = hexa.GetOppFaceIndex( iFace );
7758 ind = hexa.GetFaceNodesIndices( iOppFace );
7759 uniqueNodes.clear();
7760 for ( iCur = 0; iCur < 4; iCur++ ) {
7761 if ( curNodes[ind[ iCur ]] == curNodes[ind[ iCur + 1 ]] )
7764 uniqueNodes.push_back( curNodes[ind[ iCur ]]);
7766 if ( uniqueNodes.size() == 4 ) {
7767 // ... and the opposite one is a quadrangle
7769 const int* indTop = hexa.GetFaceNodesIndices( iFace );
7770 uniqueNodes.push_back( curNodes[indTop[ 0 ]]);
7778 if ( !isOk && nbUniqueNodes > 4 ) {
7779 ////////////////// HEXAHEDRON ---> polyhedron
7780 hexa.SetExternalNormal();
7781 vector<const SMDS_MeshNode *> poly_nodes; poly_nodes.reserve( 6 * 4 );
7782 vector<int> quantities; quantities.reserve( 6 );
7783 for ( int iFace = 0; iFace < 6; iFace++ )
7785 const int *ind = hexa.GetFaceNodesIndices( iFace ); // indices of face nodes
7786 if ( curNodes[ind[0]] == curNodes[ind[2]] ||
7787 curNodes[ind[1]] == curNodes[ind[3]] )
7790 break; // opposite nodes stick
7793 for ( iCur = 0; iCur < 4; iCur++ )
7795 if ( nodeSet.insert( curNodes[ind[ iCur ]] ).second )
7796 poly_nodes.push_back( curNodes[ind[ iCur ]]);
7798 if ( nodeSet.size() < 3 )
7799 poly_nodes.resize( poly_nodes.size() - nodeSet.size() );
7801 quantities.push_back( nodeSet.size() );
7803 if ( quantities.size() >= 4 )
7805 const SMDS_MeshElement* newElem = aMesh->AddPolyhedralVolume( poly_nodes, quantities );
7806 myLastCreatedElems.Append( newElem );
7807 if ( aShapeId && newElem )
7808 aMesh->SetMeshElementOnShape( newElem, aShapeId );
7809 rmElemIds.push_back( elem->GetID() );
7813 } // case HEXAHEDRON
7817 } // switch ( nbNodes )
7819 } // if ( nbNodes != nbUniqueNodes ) // some nodes stick
7821 if ( isOk ) // a non-poly elem remains valid after sticking nodes
7823 if ( nbNodes != nbUniqueNodes ||
7824 !aMesh->ChangeElementNodes( elem, & curNodes[0], nbNodes ))
7826 elemType.Init( elem ).SetID( elem->GetID() );
7828 SMESHDS_SubMesh * sm = aShapeId > 0 ? aMesh->MeshElements(aShapeId) : 0;
7829 aMesh->RemoveFreeElement(elem, sm, /*fromGroups=*/false);
7831 uniqueNodes.resize(nbUniqueNodes);
7832 SMDS_MeshElement* newElem = this->AddElement( uniqueNodes, elemType );
7833 if ( sm && newElem )
7834 sm->AddElement( newElem );
7835 if ( elem != newElem )
7836 ReplaceElemInGroups( elem, newElem, aMesh );
7840 // Remove invalid regular element or invalid polygon
7841 rmElemIds.push_back( elem->GetID() );
7844 } // loop on elements
7846 // Remove bad elements, then equal nodes (order important)
7848 Remove( rmElemIds, false );
7849 Remove( rmNodeIds, true );
7855 // ========================================================
7856 // class : SortableElement
7857 // purpose : allow sorting elements basing on their nodes
7858 // ========================================================
7859 class SortableElement : public set <const SMDS_MeshElement*>
7863 SortableElement( const SMDS_MeshElement* theElem )
7866 SMDS_ElemIteratorPtr nodeIt = theElem->nodesIterator();
7867 while ( nodeIt->more() )
7868 this->insert( nodeIt->next() );
7871 const SMDS_MeshElement* Get() const
7875 mutable const SMDS_MeshElement* myElem;
7878 //=======================================================================
7879 //function : FindEqualElements
7880 //purpose : Return list of group of elements built on the same nodes.
7881 // Search among theElements or in the whole mesh if theElements is empty
7882 //=======================================================================
7884 void SMESH_MeshEditor::FindEqualElements(TIDSortedElemSet & theElements,
7885 TListOfListOfElementsID & theGroupsOfElementsID)
7887 myLastCreatedElems.Clear();
7888 myLastCreatedNodes.Clear();
7890 typedef map< SortableElement, int > TMapOfNodeSet;
7891 typedef list<int> TGroupOfElems;
7893 if ( theElements.empty() )
7894 { // get all elements in the mesh
7895 SMDS_ElemIteratorPtr eIt = GetMeshDS()->elementsIterator();
7896 while ( eIt->more() )
7897 theElements.insert( theElements.end(), eIt->next() );
7900 vector< TGroupOfElems > arrayOfGroups;
7901 TGroupOfElems groupOfElems;
7902 TMapOfNodeSet mapOfNodeSet;
7904 TIDSortedElemSet::iterator elemIt = theElements.begin();
7905 for ( int i = 0; elemIt != theElements.end(); ++elemIt )
7907 const SMDS_MeshElement* curElem = *elemIt;
7908 SortableElement SE(curElem);
7910 pair< TMapOfNodeSet::iterator, bool> pp = mapOfNodeSet.insert(make_pair(SE, i));
7911 if ( !pp.second ) { // one more coincident elem
7912 TMapOfNodeSet::iterator& itSE = pp.first;
7913 int ind = (*itSE).second;
7914 arrayOfGroups[ind].push_back( curElem->GetID() );
7917 arrayOfGroups.push_back( groupOfElems );
7918 arrayOfGroups.back().push_back( curElem->GetID() );
7923 groupOfElems.clear();
7924 vector< TGroupOfElems >::iterator groupIt = arrayOfGroups.begin();
7925 for ( ; groupIt != arrayOfGroups.end(); ++groupIt )
7927 if ( groupIt->size() > 1 ) {
7928 //groupOfElems.sort(); -- theElements is sorted already
7929 theGroupsOfElementsID.push_back( groupOfElems );
7930 theGroupsOfElementsID.back().splice( theGroupsOfElementsID.back().end(), *groupIt );
7935 //=======================================================================
7936 //function : MergeElements
7937 //purpose : In each given group, substitute all elements by the first one.
7938 //=======================================================================
7940 void SMESH_MeshEditor::MergeElements(TListOfListOfElementsID & theGroupsOfElementsID)
7942 myLastCreatedElems.Clear();
7943 myLastCreatedNodes.Clear();
7945 typedef list<int> TListOfIDs;
7946 TListOfIDs rmElemIds; // IDs of elems to remove
7948 SMESHDS_Mesh* aMesh = GetMeshDS();
7950 TListOfListOfElementsID::iterator groupsIt = theGroupsOfElementsID.begin();
7951 while ( groupsIt != theGroupsOfElementsID.end() ) {
7952 TListOfIDs& aGroupOfElemID = *groupsIt;
7953 aGroupOfElemID.sort();
7954 int elemIDToKeep = aGroupOfElemID.front();
7955 const SMDS_MeshElement* elemToKeep = aMesh->FindElement(elemIDToKeep);
7956 aGroupOfElemID.pop_front();
7957 TListOfIDs::iterator idIt = aGroupOfElemID.begin();
7958 while ( idIt != aGroupOfElemID.end() ) {
7959 int elemIDToRemove = *idIt;
7960 const SMDS_MeshElement* elemToRemove = aMesh->FindElement(elemIDToRemove);
7961 // add the kept element in groups of removed one (PAL15188)
7962 AddToSameGroups( elemToKeep, elemToRemove, aMesh );
7963 rmElemIds.push_back( elemIDToRemove );
7969 Remove( rmElemIds, false );
7972 //=======================================================================
7973 //function : MergeEqualElements
7974 //purpose : Remove all but one of elements built on the same nodes.
7975 //=======================================================================
7977 void SMESH_MeshEditor::MergeEqualElements()
7979 TIDSortedElemSet aMeshElements; /* empty input ==
7980 to merge equal elements in the whole mesh */
7981 TListOfListOfElementsID aGroupsOfElementsID;
7982 FindEqualElements(aMeshElements, aGroupsOfElementsID);
7983 MergeElements(aGroupsOfElementsID);
7986 //=======================================================================
7987 //function : findAdjacentFace
7989 //=======================================================================
7991 static const SMDS_MeshElement* findAdjacentFace(const SMDS_MeshNode* n1,
7992 const SMDS_MeshNode* n2,
7993 const SMDS_MeshElement* elem)
7995 TIDSortedElemSet elemSet, avoidSet;
7997 avoidSet.insert ( elem );
7998 return SMESH_MeshAlgos::FindFaceInSet( n1, n2, elemSet, avoidSet );
8001 //=======================================================================
8002 //function : findSegment
8003 //purpose : Return a mesh segment by two nodes one of which can be medium
8004 //=======================================================================
8006 static const SMDS_MeshElement* findSegment(const SMDS_MeshNode* n1,
8007 const SMDS_MeshNode* n2)
8009 SMDS_ElemIteratorPtr it = n1->GetInverseElementIterator( SMDSAbs_Edge );
8010 while ( it->more() )
8012 const SMDS_MeshElement* seg = it->next();
8013 if ( seg->GetNodeIndex( n2 ) >= 0 )
8019 //=======================================================================
8020 //function : FindFreeBorder
8022 //=======================================================================
8024 #define ControlFreeBorder SMESH::Controls::FreeEdges::IsFreeEdge
8026 bool SMESH_MeshEditor::FindFreeBorder (const SMDS_MeshNode* theFirstNode,
8027 const SMDS_MeshNode* theSecondNode,
8028 const SMDS_MeshNode* theLastNode,
8029 list< const SMDS_MeshNode* > & theNodes,
8030 list< const SMDS_MeshElement* >& theFaces)
8032 if ( !theFirstNode || !theSecondNode )
8034 // find border face between theFirstNode and theSecondNode
8035 const SMDS_MeshElement* curElem = findAdjacentFace( theFirstNode, theSecondNode, 0 );
8039 theFaces.push_back( curElem );
8040 theNodes.push_back( theFirstNode );
8041 theNodes.push_back( theSecondNode );
8043 const SMDS_MeshNode *nIgnore = theFirstNode, *nStart = theSecondNode;
8044 TIDSortedElemSet foundElems;
8045 bool needTheLast = ( theLastNode != 0 );
8047 while ( nStart != theLastNode ) {
8048 if ( nStart == theFirstNode )
8049 return !needTheLast;
8051 // find all free border faces sharing form nStart
8053 list< const SMDS_MeshElement* > curElemList;
8054 list< const SMDS_MeshNode* > nStartList;
8055 SMDS_ElemIteratorPtr invElemIt = nStart->GetInverseElementIterator(SMDSAbs_Face);
8056 while ( invElemIt->more() ) {
8057 const SMDS_MeshElement* e = invElemIt->next();
8058 if ( e == curElem || foundElems.insert( e ).second ) {
8060 int iNode = 0, nbNodes = e->NbNodes();
8061 vector<const SMDS_MeshNode*> nodes(nbNodes+1);
8063 if ( e->IsQuadratic() ) {
8064 const SMDS_VtkFace* F =
8065 dynamic_cast<const SMDS_VtkFace*>(e);
8066 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8067 // use special nodes iterator
8068 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8069 while( anIter->more() ) {
8070 nodes[ iNode++ ] = cast2Node(anIter->next());
8074 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
8075 while ( nIt->more() )
8076 nodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nIt->next() );
8078 nodes[ iNode ] = nodes[ 0 ];
8080 for ( iNode = 0; iNode < nbNodes; iNode++ )
8081 if (((nodes[ iNode ] == nStart && nodes[ iNode + 1] != nIgnore ) ||
8082 (nodes[ iNode + 1] == nStart && nodes[ iNode ] != nIgnore )) &&
8083 ControlFreeBorder( &nodes[ iNode ], e->GetID() ))
8085 nStartList.push_back( nodes[ iNode + ( nodes[ iNode ] == nStart ? 1 : 0 )]);
8086 curElemList.push_back( e );
8090 // analyse the found
8092 int nbNewBorders = curElemList.size();
8093 if ( nbNewBorders == 0 ) {
8094 // no free border furthermore
8095 return !needTheLast;
8097 else if ( nbNewBorders == 1 ) {
8098 // one more element found
8100 nStart = nStartList.front();
8101 curElem = curElemList.front();
8102 theFaces.push_back( curElem );
8103 theNodes.push_back( nStart );
8106 // several continuations found
8107 list< const SMDS_MeshElement* >::iterator curElemIt;
8108 list< const SMDS_MeshNode* >::iterator nStartIt;
8109 // check if one of them reached the last node
8110 if ( needTheLast ) {
8111 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8112 curElemIt!= curElemList.end();
8113 curElemIt++, nStartIt++ )
8114 if ( *nStartIt == theLastNode ) {
8115 theFaces.push_back( *curElemIt );
8116 theNodes.push_back( *nStartIt );
8120 // find the best free border by the continuations
8121 list<const SMDS_MeshNode*> contNodes[ 2 ], *cNL;
8122 list<const SMDS_MeshElement*> contFaces[ 2 ], *cFL;
8123 for (curElemIt = curElemList.begin(), nStartIt = nStartList.begin();
8124 curElemIt!= curElemList.end();
8125 curElemIt++, nStartIt++ )
8127 cNL = & contNodes[ contNodes[0].empty() ? 0 : 1 ];
8128 cFL = & contFaces[ contFaces[0].empty() ? 0 : 1 ];
8129 // find one more free border
8130 if ( ! SMESH_MeshEditor::FindFreeBorder( nStart, *nStartIt, theLastNode, *cNL, *cFL )) {
8134 else if ( !contNodes[0].empty() && !contNodes[1].empty() ) {
8135 // choice: clear a worse one
8136 int iLongest = ( contNodes[0].size() < contNodes[1].size() ? 1 : 0 );
8137 int iWorse = ( needTheLast ? 1 - iLongest : iLongest );
8138 contNodes[ iWorse ].clear();
8139 contFaces[ iWorse ].clear();
8142 if ( contNodes[0].empty() && contNodes[1].empty() )
8145 // append the best free border
8146 cNL = & contNodes[ contNodes[0].empty() ? 1 : 0 ];
8147 cFL = & contFaces[ contFaces[0].empty() ? 1 : 0 ];
8148 theNodes.pop_back(); // remove nIgnore
8149 theNodes.pop_back(); // remove nStart
8150 theFaces.pop_back(); // remove curElem
8151 list< const SMDS_MeshNode* >::iterator nIt = cNL->begin();
8152 list< const SMDS_MeshElement* >::iterator fIt = cFL->begin();
8153 for ( ; nIt != cNL->end(); nIt++ ) theNodes.push_back( *nIt );
8154 for ( ; fIt != cFL->end(); fIt++ ) theFaces.push_back( *fIt );
8157 } // several continuations found
8158 } // while ( nStart != theLastNode )
8163 //=======================================================================
8164 //function : CheckFreeBorderNodes
8165 //purpose : Return true if the tree nodes are on a free border
8166 //=======================================================================
8168 bool SMESH_MeshEditor::CheckFreeBorderNodes(const SMDS_MeshNode* theNode1,
8169 const SMDS_MeshNode* theNode2,
8170 const SMDS_MeshNode* theNode3)
8172 list< const SMDS_MeshNode* > nodes;
8173 list< const SMDS_MeshElement* > faces;
8174 return FindFreeBorder( theNode1, theNode2, theNode3, nodes, faces);
8177 //=======================================================================
8178 //function : SewFreeBorder
8180 //warning : for border-to-side sewing theSideSecondNode is considered as
8181 // the last side node and theSideThirdNode is not used
8182 //=======================================================================
8184 SMESH_MeshEditor::Sew_Error
8185 SMESH_MeshEditor::SewFreeBorder (const SMDS_MeshNode* theBordFirstNode,
8186 const SMDS_MeshNode* theBordSecondNode,
8187 const SMDS_MeshNode* theBordLastNode,
8188 const SMDS_MeshNode* theSideFirstNode,
8189 const SMDS_MeshNode* theSideSecondNode,
8190 const SMDS_MeshNode* theSideThirdNode,
8191 const bool theSideIsFreeBorder,
8192 const bool toCreatePolygons,
8193 const bool toCreatePolyedrs)
8195 myLastCreatedElems.Clear();
8196 myLastCreatedNodes.Clear();
8198 Sew_Error aResult = SEW_OK;
8200 // ====================================
8201 // find side nodes and elements
8202 // ====================================
8204 list< const SMDS_MeshNode* > nSide[ 2 ];
8205 list< const SMDS_MeshElement* > eSide[ 2 ];
8206 list< const SMDS_MeshNode* >::iterator nIt[ 2 ];
8207 list< const SMDS_MeshElement* >::iterator eIt[ 2 ];
8211 if (!FindFreeBorder(theBordFirstNode,theBordSecondNode,theBordLastNode,
8212 nSide[0], eSide[0])) {
8213 MESSAGE(" Free Border 1 not found " );
8214 aResult = SEW_BORDER1_NOT_FOUND;
8216 if (theSideIsFreeBorder) {
8219 if (!FindFreeBorder(theSideFirstNode, theSideSecondNode, theSideThirdNode,
8220 nSide[1], eSide[1])) {
8221 MESSAGE(" Free Border 2 not found " );
8222 aResult = ( aResult != SEW_OK ? SEW_BOTH_BORDERS_NOT_FOUND : SEW_BORDER2_NOT_FOUND );
8225 if ( aResult != SEW_OK )
8228 if (!theSideIsFreeBorder) {
8232 // -------------------------------------------------------------------------
8234 // 1. If nodes to merge are not coincident, move nodes of the free border
8235 // from the coord sys defined by the direction from the first to last
8236 // nodes of the border to the correspondent sys of the side 2
8237 // 2. On the side 2, find the links most co-directed with the correspondent
8238 // links of the free border
8239 // -------------------------------------------------------------------------
8241 // 1. Since sewing may break if there are volumes to split on the side 2,
8242 // we wont move nodes but just compute new coordinates for them
8243 typedef map<const SMDS_MeshNode*, gp_XYZ> TNodeXYZMap;
8244 TNodeXYZMap nBordXYZ;
8245 list< const SMDS_MeshNode* >& bordNodes = nSide[ 0 ];
8246 list< const SMDS_MeshNode* >::iterator nBordIt;
8248 gp_XYZ Pb1( theBordFirstNode->X(), theBordFirstNode->Y(), theBordFirstNode->Z() );
8249 gp_XYZ Pb2( theBordLastNode->X(), theBordLastNode->Y(), theBordLastNode->Z() );
8250 gp_XYZ Ps1( theSideFirstNode->X(), theSideFirstNode->Y(), theSideFirstNode->Z() );
8251 gp_XYZ Ps2( theSideSecondNode->X(), theSideSecondNode->Y(), theSideSecondNode->Z() );
8252 double tol2 = 1.e-8;
8253 gp_Vec Vbs1( Pb1 - Ps1 ),Vbs2( Pb2 - Ps2 );
8254 if ( Vbs1.SquareMagnitude() > tol2 || Vbs2.SquareMagnitude() > tol2 ) {
8255 // Need node movement.
8257 // find X and Z axes to create trsf
8258 gp_Vec Zb( Pb1 - Pb2 ), Zs( Ps1 - Ps2 );
8260 if ( X.SquareMagnitude() <= gp::Resolution() * gp::Resolution() )
8262 X = gp_Ax2( gp::Origin(), Zb ).XDirection();
8265 gp_Ax3 toBordAx( Pb1, Zb, X );
8266 gp_Ax3 fromSideAx( Ps1, Zs, X );
8267 gp_Ax3 toGlobalAx( gp::Origin(), gp::DZ(), gp::DX() );
8269 gp_Trsf toBordSys, fromSide2Sys;
8270 toBordSys.SetTransformation( toBordAx );
8271 fromSide2Sys.SetTransformation( fromSideAx, toGlobalAx );
8272 fromSide2Sys.SetScaleFactor( Zs.Magnitude() / Zb.Magnitude() );
8275 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8276 const SMDS_MeshNode* n = *nBordIt;
8277 gp_XYZ xyz( n->X(),n->Y(),n->Z() );
8278 toBordSys.Transforms( xyz );
8279 fromSide2Sys.Transforms( xyz );
8280 nBordXYZ.insert( TNodeXYZMap::value_type( n, xyz ));
8284 // just insert nodes XYZ in the nBordXYZ map
8285 for ( nBordIt = bordNodes.begin(); nBordIt != bordNodes.end(); nBordIt++ ) {
8286 const SMDS_MeshNode* n = *nBordIt;
8287 nBordXYZ.insert( TNodeXYZMap::value_type( n, gp_XYZ( n->X(),n->Y(),n->Z() )));
8291 // 2. On the side 2, find the links most co-directed with the correspondent
8292 // links of the free border
8294 list< const SMDS_MeshElement* >& sideElems = eSide[ 1 ];
8295 list< const SMDS_MeshNode* >& sideNodes = nSide[ 1 ];
8296 sideNodes.push_back( theSideFirstNode );
8298 bool hasVolumes = false;
8299 LinkID_Gen aLinkID_Gen( GetMeshDS() );
8300 set<long> foundSideLinkIDs, checkedLinkIDs;
8301 SMDS_VolumeTool volume;
8302 //const SMDS_MeshNode* faceNodes[ 4 ];
8304 const SMDS_MeshNode* sideNode;
8305 const SMDS_MeshElement* sideElem = 0;
8306 const SMDS_MeshNode* prevSideNode = theSideFirstNode;
8307 const SMDS_MeshNode* prevBordNode = theBordFirstNode;
8308 nBordIt = bordNodes.begin();
8310 // border node position and border link direction to compare with
8311 gp_XYZ bordPos = nBordXYZ[ *nBordIt ];
8312 gp_XYZ bordDir = bordPos - nBordXYZ[ prevBordNode ];
8313 // choose next side node by link direction or by closeness to
8314 // the current border node:
8315 bool searchByDir = ( *nBordIt != theBordLastNode );
8317 // find the next node on the Side 2
8319 double maxDot = -DBL_MAX, minDist = DBL_MAX;
8321 checkedLinkIDs.clear();
8322 gp_XYZ prevXYZ( prevSideNode->X(), prevSideNode->Y(), prevSideNode->Z() );
8324 // loop on inverse elements of current node (prevSideNode) on the Side 2
8325 SMDS_ElemIteratorPtr invElemIt = prevSideNode->GetInverseElementIterator();
8326 while ( invElemIt->more() )
8328 const SMDS_MeshElement* elem = invElemIt->next();
8329 // prepare data for a loop on links coming to prevSideNode, of a face or a volume
8330 int iPrevNode = 0, iNode = 0, nbNodes = elem->NbNodes();
8331 vector< const SMDS_MeshNode* > faceNodes( nbNodes, (const SMDS_MeshNode*)0 );
8332 bool isVolume = volume.Set( elem );
8333 const SMDS_MeshNode** nodes = isVolume ? volume.GetNodes() : & faceNodes[0];
8334 if ( isVolume ) // --volume
8336 else if ( elem->GetType()==SMDSAbs_Face ) { // --face
8337 // retrieve all face nodes and find iPrevNode - an index of the prevSideNode
8338 if(elem->IsQuadratic()) {
8339 const SMDS_VtkFace* F =
8340 dynamic_cast<const SMDS_VtkFace*>(elem);
8341 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8342 // use special nodes iterator
8343 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8344 while( anIter->more() ) {
8345 nodes[ iNode ] = cast2Node(anIter->next());
8346 if ( nodes[ iNode++ ] == prevSideNode )
8347 iPrevNode = iNode - 1;
8351 SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
8352 while ( nIt->more() ) {
8353 nodes[ iNode ] = cast2Node( nIt->next() );
8354 if ( nodes[ iNode++ ] == prevSideNode )
8355 iPrevNode = iNode - 1;
8358 // there are 2 links to check
8363 // loop on links, to be precise, on the second node of links
8364 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
8365 const SMDS_MeshNode* n = nodes[ iNode ];
8367 if ( !volume.IsLinked( n, prevSideNode ))
8371 if ( iNode ) // a node before prevSideNode
8372 n = nodes[ iPrevNode == 0 ? elem->NbNodes() - 1 : iPrevNode - 1 ];
8373 else // a node after prevSideNode
8374 n = nodes[ iPrevNode + 1 == elem->NbNodes() ? 0 : iPrevNode + 1 ];
8376 // check if this link was already used
8377 long iLink = aLinkID_Gen.GetLinkID( prevSideNode, n );
8378 bool isJustChecked = !checkedLinkIDs.insert( iLink ).second;
8379 if (!isJustChecked &&
8380 foundSideLinkIDs.find( iLink ) == foundSideLinkIDs.end() )
8382 // test a link geometrically
8383 gp_XYZ nextXYZ ( n->X(), n->Y(), n->Z() );
8384 bool linkIsBetter = false;
8385 double dot = 0.0, dist = 0.0;
8386 if ( searchByDir ) { // choose most co-directed link
8387 dot = bordDir * ( nextXYZ - prevXYZ ).Normalized();
8388 linkIsBetter = ( dot > maxDot );
8390 else { // choose link with the node closest to bordPos
8391 dist = ( nextXYZ - bordPos ).SquareModulus();
8392 linkIsBetter = ( dist < minDist );
8394 if ( linkIsBetter ) {
8403 } // loop on inverse elements of prevSideNode
8406 MESSAGE(" Cant find path by links of the Side 2 ");
8407 return SEW_BAD_SIDE_NODES;
8409 sideNodes.push_back( sideNode );
8410 sideElems.push_back( sideElem );
8411 foundSideLinkIDs.insert ( linkID );
8412 prevSideNode = sideNode;
8414 if ( *nBordIt == theBordLastNode )
8415 searchByDir = false;
8417 // find the next border link to compare with
8418 gp_XYZ sidePos( sideNode->X(), sideNode->Y(), sideNode->Z() );
8419 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8420 // move to next border node if sideNode is before forward border node (bordPos)
8421 while ( *nBordIt != theBordLastNode && !searchByDir ) {
8422 prevBordNode = *nBordIt;
8424 bordPos = nBordXYZ[ *nBordIt ];
8425 bordDir = bordPos - nBordXYZ[ prevBordNode ];
8426 searchByDir = ( bordDir * ( sidePos - bordPos ) <= 0 );
8430 while ( sideNode != theSideSecondNode );
8432 if ( hasVolumes && sideNodes.size () != bordNodes.size() && !toCreatePolyedrs) {
8433 MESSAGE("VOLUME SPLITTING IS FORBIDDEN");
8434 return SEW_VOLUMES_TO_SPLIT; // volume splitting is forbidden
8436 } // end nodes search on the side 2
8438 // ============================
8439 // sew the border to the side 2
8440 // ============================
8442 int nbNodes[] = { (int)nSide[0].size(), (int)nSide[1].size() };
8443 int maxNbNodes = Max( nbNodes[0], nbNodes[1] );
8445 bool toMergeConformal = ( nbNodes[0] == nbNodes[1] );
8446 if ( toMergeConformal && toCreatePolygons )
8448 // do not merge quadrangles if polygons are OK (IPAL0052824)
8449 eIt[0] = eSide[0].begin();
8450 eIt[1] = eSide[1].begin();
8451 bool allQuads[2] = { true, true };
8452 for ( int iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8453 for ( ; allQuads[iBord] && eIt[iBord] != eSide[iBord].end(); ++eIt[iBord] )
8454 allQuads[iBord] = ( (*eIt[iBord])->NbCornerNodes() == 4 );
8456 toMergeConformal = ( !allQuads[0] && !allQuads[1] );
8459 TListOfListOfNodes nodeGroupsToMerge;
8460 if (( toMergeConformal ) ||
8461 ( theSideIsFreeBorder && !theSideThirdNode )) {
8463 // all nodes are to be merged
8465 for (nIt[0] = nSide[0].begin(), nIt[1] = nSide[1].begin();
8466 nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end();
8467 nIt[0]++, nIt[1]++ )
8469 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8470 nodeGroupsToMerge.back().push_back( *nIt[1] ); // to keep
8471 nodeGroupsToMerge.back().push_back( *nIt[0] ); // to remove
8476 // insert new nodes into the border and the side to get equal nb of segments
8478 // get normalized parameters of nodes on the borders
8479 vector< double > param[ 2 ];
8480 param[0].resize( maxNbNodes );
8481 param[1].resize( maxNbNodes );
8483 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8484 list< const SMDS_MeshNode* >& nodes = nSide[ iBord ];
8485 list< const SMDS_MeshNode* >::iterator nIt = nodes.begin();
8486 const SMDS_MeshNode* nPrev = *nIt;
8487 double bordLength = 0;
8488 for ( iNode = 0; nIt != nodes.end(); nIt++, iNode++ ) { // loop on border nodes
8489 const SMDS_MeshNode* nCur = *nIt;
8490 gp_XYZ segment (nCur->X() - nPrev->X(),
8491 nCur->Y() - nPrev->Y(),
8492 nCur->Z() - nPrev->Z());
8493 double segmentLen = segment.Modulus();
8494 bordLength += segmentLen;
8495 param[ iBord ][ iNode ] = bordLength;
8498 // normalize within [0,1]
8499 for ( iNode = 0; iNode < nbNodes[ iBord ]; iNode++ ) {
8500 param[ iBord ][ iNode ] /= bordLength;
8504 // loop on border segments
8505 const SMDS_MeshNode *nPrev[ 2 ] = { 0, 0 };
8506 int i[ 2 ] = { 0, 0 };
8507 nIt[0] = nSide[0].begin(); eIt[0] = eSide[0].begin();
8508 nIt[1] = nSide[1].begin(); eIt[1] = eSide[1].begin();
8510 TElemOfNodeListMap insertMap;
8511 TElemOfNodeListMap::iterator insertMapIt;
8513 // key: elem to insert nodes into
8514 // value: 2 nodes to insert between + nodes to be inserted
8516 bool next[ 2 ] = { false, false };
8518 // find min adjacent segment length after sewing
8519 double nextParam = 10., prevParam = 0;
8520 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8521 if ( i[ iBord ] + 1 < nbNodes[ iBord ])
8522 nextParam = Min( nextParam, param[iBord][ i[iBord] + 1 ]);
8523 if ( i[ iBord ] > 0 )
8524 prevParam = Max( prevParam, param[iBord][ i[iBord] - 1 ]);
8526 double minParam = Min( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8527 double maxParam = Max( param[ 0 ][ i[0] ], param[ 1 ][ i[1] ]);
8528 double minSegLen = Min( nextParam - minParam, maxParam - prevParam );
8530 // choose to insert or to merge nodes
8531 double du = param[ 1 ][ i[1] ] - param[ 0 ][ i[0] ];
8532 if ( Abs( du ) <= minSegLen * 0.2 ) {
8535 nodeGroupsToMerge.push_back( list<const SMDS_MeshNode*>() );
8536 const SMDS_MeshNode* n0 = *nIt[0];
8537 const SMDS_MeshNode* n1 = *nIt[1];
8538 nodeGroupsToMerge.back().push_back( n1 );
8539 nodeGroupsToMerge.back().push_back( n0 );
8540 // position of node of the border changes due to merge
8541 param[ 0 ][ i[0] ] += du;
8542 // move n1 for the sake of elem shape evaluation during insertion.
8543 // n1 will be removed by MergeNodes() anyway
8544 const_cast<SMDS_MeshNode*>( n0 )->setXYZ( n1->X(), n1->Y(), n1->Z() );
8545 next[0] = next[1] = true;
8550 int intoBord = ( du < 0 ) ? 0 : 1;
8551 const SMDS_MeshElement* elem = *eIt [ intoBord ];
8552 const SMDS_MeshNode* n1 = nPrev[ intoBord ];
8553 const SMDS_MeshNode* n2 = *nIt [ intoBord ];
8554 const SMDS_MeshNode* nIns = *nIt [ 1 - intoBord ];
8555 if ( intoBord == 1 ) {
8556 // move node of the border to be on a link of elem of the side
8557 gp_XYZ p1 (n1->X(), n1->Y(), n1->Z());
8558 gp_XYZ p2 (n2->X(), n2->Y(), n2->Z());
8559 double ratio = du / ( param[ 1 ][ i[1] ] - param[ 1 ][ i[1]-1 ]);
8560 gp_XYZ p = p2 * ( 1 - ratio ) + p1 * ratio;
8561 GetMeshDS()->MoveNode( nIns, p.X(), p.Y(), p.Z() );
8563 insertMapIt = insertMap.find( elem );
8564 bool notFound = ( insertMapIt == insertMap.end() );
8565 bool otherLink = ( !notFound && (*insertMapIt).second.front() != n1 );
8567 // insert into another link of the same element:
8568 // 1. perform insertion into the other link of the elem
8569 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8570 const SMDS_MeshNode* n12 = nodeList.front(); nodeList.pop_front();
8571 const SMDS_MeshNode* n22 = nodeList.front(); nodeList.pop_front();
8572 InsertNodesIntoLink( elem, n12, n22, nodeList, toCreatePolygons );
8573 // 2. perform insertion into the link of adjacent faces
8574 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n12, n22, elem )) {
8575 InsertNodesIntoLink( adjElem, n12, n22, nodeList, toCreatePolygons );
8577 while ( const SMDS_MeshElement* seg = findSegment( n12, n22 )) {
8578 InsertNodesIntoLink( seg, n12, n22, nodeList );
8580 if (toCreatePolyedrs) {
8581 // perform insertion into the links of adjacent volumes
8582 UpdateVolumes(n12, n22, nodeList);
8584 // 3. find an element appeared on n1 and n2 after the insertion
8585 insertMap.erase( elem );
8586 elem = findAdjacentFace( n1, n2, 0 );
8588 if ( notFound || otherLink ) {
8589 // add element and nodes of the side into the insertMap
8590 insertMapIt = insertMap.insert( make_pair( elem, list<const SMDS_MeshNode*>() )).first;
8591 (*insertMapIt).second.push_back( n1 );
8592 (*insertMapIt).second.push_back( n2 );
8594 // add node to be inserted into elem
8595 (*insertMapIt).second.push_back( nIns );
8596 next[ 1 - intoBord ] = true;
8599 // go to the next segment
8600 for ( iBord = 0; iBord < 2; iBord++ ) { // loop on 2 borders
8601 if ( next[ iBord ] ) {
8602 if ( i[ iBord ] != 0 && eIt[ iBord ] != eSide[ iBord ].end())
8604 nPrev[ iBord ] = *nIt[ iBord ];
8605 nIt[ iBord ]++; i[ iBord ]++;
8609 while ( nIt[0] != nSide[0].end() && nIt[1] != nSide[1].end());
8611 // perform insertion of nodes into elements
8613 for (insertMapIt = insertMap.begin();
8614 insertMapIt != insertMap.end();
8617 const SMDS_MeshElement* elem = (*insertMapIt).first;
8618 list<const SMDS_MeshNode*> & nodeList = (*insertMapIt).second;
8619 const SMDS_MeshNode* n1 = nodeList.front(); nodeList.pop_front();
8620 const SMDS_MeshNode* n2 = nodeList.front(); nodeList.pop_front();
8622 InsertNodesIntoLink( elem, n1, n2, nodeList, toCreatePolygons );
8624 while ( const SMDS_MeshElement* seg = findSegment( n1, n2 )) {
8625 InsertNodesIntoLink( seg, n1, n2, nodeList );
8628 if ( !theSideIsFreeBorder ) {
8629 // look for and insert nodes into the faces adjacent to elem
8630 while ( const SMDS_MeshElement* adjElem = findAdjacentFace( n1, n2, elem )) {
8631 InsertNodesIntoLink( adjElem, n1, n2, nodeList, toCreatePolygons );
8634 if (toCreatePolyedrs) {
8635 // perform insertion into the links of adjacent volumes
8636 UpdateVolumes(n1, n2, nodeList);
8639 } // end: insert new nodes
8641 MergeNodes ( nodeGroupsToMerge );
8644 // Remove coincident segments
8647 TIDSortedElemSet segments;
8648 SMESH_SequenceOfElemPtr newFaces;
8649 for ( int i = 1; i <= myLastCreatedElems.Length(); ++i )
8651 if ( !myLastCreatedElems(i) ) continue;
8652 if ( myLastCreatedElems(i)->GetType() == SMDSAbs_Edge )
8653 segments.insert( segments.end(), myLastCreatedElems(i) );
8655 newFaces.Append( myLastCreatedElems(i) );
8657 // get segments adjacent to merged nodes
8658 TListOfListOfNodes::iterator groupIt = nodeGroupsToMerge.begin();
8659 for ( ; groupIt != nodeGroupsToMerge.end(); groupIt++ )
8661 const list<const SMDS_MeshNode*>& nodes = *groupIt;
8662 SMDS_ElemIteratorPtr segIt = nodes.front()->GetInverseElementIterator( SMDSAbs_Edge );
8663 while ( segIt->more() )
8664 segments.insert( segIt->next() );
8668 TListOfListOfElementsID equalGroups;
8669 if ( !segments.empty() )
8670 FindEqualElements( segments, equalGroups );
8671 if ( !equalGroups.empty() )
8673 // remove from segments those that will be removed
8674 TListOfListOfElementsID::iterator itGroups = equalGroups.begin();
8675 for ( ; itGroups != equalGroups.end(); ++itGroups )
8677 list< int >& group = *itGroups;
8678 list< int >::iterator id = group.begin();
8679 for ( ++id; id != group.end(); ++id )
8680 if ( const SMDS_MeshElement* seg = GetMeshDS()->FindElement( *id ))
8681 segments.erase( seg );
8683 // remove equal segments
8684 MergeElements( equalGroups );
8686 // restore myLastCreatedElems
8687 myLastCreatedElems = newFaces;
8688 TIDSortedElemSet::iterator seg = segments.begin();
8689 for ( ; seg != segments.end(); ++seg )
8690 myLastCreatedElems.Append( *seg );
8696 //=======================================================================
8697 //function : InsertNodesIntoLink
8698 //purpose : insert theNodesToInsert into theElement between theBetweenNode1
8699 // and theBetweenNode2 and split theElement
8700 //=======================================================================
8702 void SMESH_MeshEditor::InsertNodesIntoLink(const SMDS_MeshElement* theElement,
8703 const SMDS_MeshNode* theBetweenNode1,
8704 const SMDS_MeshNode* theBetweenNode2,
8705 list<const SMDS_MeshNode*>& theNodesToInsert,
8706 const bool toCreatePoly)
8708 if ( !theElement ) return;
8710 SMESHDS_Mesh *aMesh = GetMeshDS();
8711 vector<const SMDS_MeshElement*> newElems;
8713 if ( theElement->GetType() == SMDSAbs_Edge )
8715 theNodesToInsert.push_front( theBetweenNode1 );
8716 theNodesToInsert.push_back ( theBetweenNode2 );
8717 list<const SMDS_MeshNode*>::iterator n = theNodesToInsert.begin();
8718 const SMDS_MeshNode* n1 = *n;
8719 for ( ++n; n != theNodesToInsert.end(); ++n )
8721 const SMDS_MeshNode* n2 = *n;
8722 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( n1, n2 ))
8723 AddToSameGroups( seg, theElement, aMesh );
8725 newElems.push_back( aMesh->AddEdge ( n1, n2 ));
8728 theNodesToInsert.pop_front();
8729 theNodesToInsert.pop_back();
8731 if ( theElement->IsQuadratic() ) // add a not split part
8733 vector<const SMDS_MeshNode*> nodes( theElement->begin_nodes(),
8734 theElement->end_nodes() );
8735 int iOther = 0, nbN = nodes.size();
8736 for ( ; iOther < nbN; ++iOther )
8737 if ( nodes[iOther] != theBetweenNode1 &&
8738 nodes[iOther] != theBetweenNode2 )
8742 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[0], nodes[1] ))
8743 AddToSameGroups( seg, theElement, aMesh );
8745 newElems.push_back( aMesh->AddEdge ( nodes[0], nodes[1] ));
8747 else if ( iOther == 2 )
8749 if ( const SMDS_MeshElement* seg = aMesh->FindEdge( nodes[1], nodes[2] ))
8750 AddToSameGroups( seg, theElement, aMesh );
8752 newElems.push_back( aMesh->AddEdge ( nodes[1], nodes[2] ));
8755 // treat new elements
8756 for ( size_t i = 0; i < newElems.size(); ++i )
8759 aMesh->SetMeshElementOnShape( newElems[i], theElement->getshapeId() );
8760 myLastCreatedElems.Append( newElems[i] );
8762 ReplaceElemInGroups( theElement, newElems, aMesh );
8763 aMesh->RemoveElement( theElement );
8766 } // if ( theElement->GetType() == SMDSAbs_Edge )
8768 const SMDS_MeshElement* theFace = theElement;
8769 if ( theFace->GetType() != SMDSAbs_Face ) return;
8771 // find indices of 2 link nodes and of the rest nodes
8772 int iNode = 0, il1, il2, i3, i4;
8773 il1 = il2 = i3 = i4 = -1;
8774 vector<const SMDS_MeshNode*> nodes( theFace->NbNodes() );
8776 SMDS_NodeIteratorPtr nodeIt = theFace->interlacedNodesIterator();
8777 while ( nodeIt->more() ) {
8778 const SMDS_MeshNode* n = nodeIt->next();
8779 if ( n == theBetweenNode1 )
8781 else if ( n == theBetweenNode2 )
8787 nodes[ iNode++ ] = n;
8789 if ( il1 < 0 || il2 < 0 || i3 < 0 )
8792 // arrange link nodes to go one after another regarding the face orientation
8793 bool reverse = ( Abs( il2 - il1 ) == 1 ? il2 < il1 : il1 < il2 );
8794 list<const SMDS_MeshNode *> aNodesToInsert = theNodesToInsert;
8799 aNodesToInsert.reverse();
8801 // check that not link nodes of a quadrangles are in good order
8802 int nbFaceNodes = theFace->NbNodes();
8803 if ( nbFaceNodes == 4 && i4 - i3 != 1 ) {
8809 if (toCreatePoly || theFace->IsPoly()) {
8812 vector<const SMDS_MeshNode *> poly_nodes (nbFaceNodes + aNodesToInsert.size());
8814 // add nodes of face up to first node of link
8817 if ( theFace->IsQuadratic() ) {
8818 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>(theFace);
8819 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
8820 // use special nodes iterator
8821 SMDS_ElemIteratorPtr anIter = F->interlacedNodesElemIterator();
8822 while( anIter->more() && !isFLN ) {
8823 const SMDS_MeshNode* n = cast2Node(anIter->next());
8824 poly_nodes[iNode++] = n;
8825 if (n == nodes[il1]) {
8829 // add nodes to insert
8830 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8831 for (; nIt != aNodesToInsert.end(); nIt++) {
8832 poly_nodes[iNode++] = *nIt;
8834 // add nodes of face starting from last node of link
8835 while ( anIter->more() ) {
8836 poly_nodes[iNode++] = cast2Node(anIter->next());
8840 SMDS_ElemIteratorPtr nodeIt = theFace->nodesIterator();
8841 while ( nodeIt->more() && !isFLN ) {
8842 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8843 poly_nodes[iNode++] = n;
8844 if (n == nodes[il1]) {
8848 // add nodes to insert
8849 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8850 for (; nIt != aNodesToInsert.end(); nIt++) {
8851 poly_nodes[iNode++] = *nIt;
8853 // add nodes of face starting from last node of link
8854 while ( nodeIt->more() ) {
8855 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
8856 poly_nodes[iNode++] = n;
8861 newElems.push_back( aMesh->AddPolygonalFace( poly_nodes ));
8864 else if ( !theFace->IsQuadratic() )
8866 // put aNodesToInsert between theBetweenNode1 and theBetweenNode2
8867 int nbLinkNodes = 2 + aNodesToInsert.size();
8868 //const SMDS_MeshNode* linkNodes[ nbLinkNodes ];
8869 vector<const SMDS_MeshNode*> linkNodes( nbLinkNodes );
8870 linkNodes[ 0 ] = nodes[ il1 ];
8871 linkNodes[ nbLinkNodes - 1 ] = nodes[ il2 ];
8872 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
8873 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
8874 linkNodes[ iNode++ ] = *nIt;
8876 // decide how to split a quadrangle: compare possible variants
8877 // and choose which of splits to be a quadrangle
8878 int i1, i2, iSplit, nbSplits = nbLinkNodes - 1, iBestQuad = 0;
8879 if ( nbFaceNodes == 3 ) {
8880 iBestQuad = nbSplits;
8883 else if ( nbFaceNodes == 4 ) {
8884 SMESH::Controls::NumericalFunctorPtr aCrit( new SMESH::Controls::AspectRatio);
8885 double aBestRate = DBL_MAX;
8886 for ( int iQuad = 0; iQuad < nbSplits; iQuad++ ) {
8888 double aBadRate = 0;
8889 // evaluate elements quality
8890 for ( iSplit = 0; iSplit < nbSplits; iSplit++ ) {
8891 if ( iSplit == iQuad ) {
8892 SMDS_FaceOfNodes quad (linkNodes[ i1++ ],
8896 aBadRate += getBadRate( &quad, aCrit );
8899 SMDS_FaceOfNodes tria (linkNodes[ i1++ ],
8901 nodes[ iSplit < iQuad ? i4 : i3 ]);
8902 aBadRate += getBadRate( &tria, aCrit );
8906 if ( aBadRate < aBestRate ) {
8908 aBestRate = aBadRate;
8913 // create new elements
8915 for ( iSplit = 0; iSplit < nbSplits - 1; iSplit++ )
8917 if ( iSplit == iBestQuad )
8918 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
8923 newElems.push_back( aMesh->AddFace (linkNodes[ i1++ ],
8925 nodes[ iSplit < iBestQuad ? i4 : i3 ]));
8928 const SMDS_MeshNode* newNodes[ 4 ];
8929 newNodes[ 0 ] = linkNodes[ i1 ];
8930 newNodes[ 1 ] = linkNodes[ i2 ];
8931 newNodes[ 2 ] = nodes[ iSplit >= iBestQuad ? i3 : i4 ];
8932 newNodes[ 3 ] = nodes[ i4 ];
8933 if (iSplit == iBestQuad)
8934 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2], newNodes[3] ));
8936 newElems.push_back( aMesh->AddFace( newNodes[0], newNodes[1], newNodes[2] ));
8938 } // end if(!theFace->IsQuadratic())
8940 else { // theFace is quadratic
8941 // we have to split theFace on simple triangles and one simple quadrangle
8943 int nbshift = tmp*2;
8944 // shift nodes in nodes[] by nbshift
8946 for(i=0; i<nbshift; i++) {
8947 const SMDS_MeshNode* n = nodes[0];
8948 for(j=0; j<nbFaceNodes-1; j++) {
8949 nodes[j] = nodes[j+1];
8951 nodes[nbFaceNodes-1] = n;
8953 il1 = il1 - nbshift;
8954 // now have to insert nodes between n0 and n1 or n1 and n2 (see below)
8955 // n0 n1 n2 n0 n1 n2
8956 // +-----+-----+ +-----+-----+
8965 // create new elements
8967 if ( nbFaceNodes == 6 ) { // quadratic triangle
8968 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
8969 if ( theFace->IsMediumNode(nodes[il1]) ) {
8970 // create quadrangle
8971 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[5] ));
8977 // create quadrangle
8978 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[5] ));
8984 else { // nbFaceNodes==8 - quadratic quadrangle
8985 newElems.push_back( aMesh->AddFace( nodes[3], nodes[4], nodes[5] ));
8986 newElems.push_back( aMesh->AddFace( nodes[5], nodes[6], nodes[7] ));
8987 newElems.push_back( aMesh->AddFace( nodes[5], nodes[7], nodes[3] ));
8988 if ( theFace->IsMediumNode( nodes[ il1 ])) {
8989 // create quadrangle
8990 newElems.push_back( aMesh->AddFace( nodes[0], nodes[1], nodes[3], nodes[7] ));
8996 // create quadrangle
8997 newElems.push_back( aMesh->AddFace( nodes[1], nodes[2], nodes[3], nodes[7] ));
9003 // create needed triangles using n1,n2,n3 and inserted nodes
9004 int nbn = 2 + aNodesToInsert.size();
9005 vector<const SMDS_MeshNode*> aNodes(nbn);
9006 aNodes[0 ] = nodes[n1];
9007 aNodes[nbn-1] = nodes[n2];
9008 list<const SMDS_MeshNode*>::iterator nIt = aNodesToInsert.begin();
9009 for ( iNode = 1; nIt != aNodesToInsert.end(); nIt++ ) {
9010 aNodes[iNode++] = *nIt;
9012 for ( i = 1; i < nbn; i++ )
9013 newElems.push_back( aMesh->AddFace( aNodes[i-1], aNodes[i], nodes[n3] ));
9016 // remove the old face
9017 for ( size_t i = 0; i < newElems.size(); ++i )
9020 aMesh->SetMeshElementOnShape( newElems[i], theFace->getshapeId() );
9021 myLastCreatedElems.Append( newElems[i] );
9023 ReplaceElemInGroups( theFace, newElems, aMesh );
9024 aMesh->RemoveElement(theFace);
9026 } // InsertNodesIntoLink()
9028 //=======================================================================
9029 //function : UpdateVolumes
9031 //=======================================================================
9033 void SMESH_MeshEditor::UpdateVolumes (const SMDS_MeshNode* theBetweenNode1,
9034 const SMDS_MeshNode* theBetweenNode2,
9035 list<const SMDS_MeshNode*>& theNodesToInsert)
9037 myLastCreatedElems.Clear();
9038 myLastCreatedNodes.Clear();
9040 SMDS_ElemIteratorPtr invElemIt = theBetweenNode1->GetInverseElementIterator(SMDSAbs_Volume);
9041 while (invElemIt->more()) { // loop on inverse elements of theBetweenNode1
9042 const SMDS_MeshElement* elem = invElemIt->next();
9044 // check, if current volume has link theBetweenNode1 - theBetweenNode2
9045 SMDS_VolumeTool aVolume (elem);
9046 if (!aVolume.IsLinked(theBetweenNode1, theBetweenNode2))
9049 // insert new nodes in all faces of the volume, sharing link theBetweenNode1 - theBetweenNode2
9050 int iface, nbFaces = aVolume.NbFaces();
9051 vector<const SMDS_MeshNode *> poly_nodes;
9052 vector<int> quantities (nbFaces);
9054 for (iface = 0; iface < nbFaces; iface++) {
9055 int nbFaceNodes = aVolume.NbFaceNodes(iface), nbInserted = 0;
9056 // faceNodes will contain (nbFaceNodes + 1) nodes, last = first
9057 const SMDS_MeshNode** faceNodes = aVolume.GetFaceNodes(iface);
9059 for (int inode = 0; inode < nbFaceNodes; inode++) {
9060 poly_nodes.push_back(faceNodes[inode]);
9062 if (nbInserted == 0) {
9063 if (faceNodes[inode] == theBetweenNode1) {
9064 if (faceNodes[inode + 1] == theBetweenNode2) {
9065 nbInserted = theNodesToInsert.size();
9067 // add nodes to insert
9068 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.begin();
9069 for (; nIt != theNodesToInsert.end(); nIt++) {
9070 poly_nodes.push_back(*nIt);
9074 else if (faceNodes[inode] == theBetweenNode2) {
9075 if (faceNodes[inode + 1] == theBetweenNode1) {
9076 nbInserted = theNodesToInsert.size();
9078 // add nodes to insert in reversed order
9079 list<const SMDS_MeshNode*>::iterator nIt = theNodesToInsert.end();
9081 for (; nIt != theNodesToInsert.begin(); nIt--) {
9082 poly_nodes.push_back(*nIt);
9084 poly_nodes.push_back(*nIt);
9091 quantities[iface] = nbFaceNodes + nbInserted;
9094 // Replace the volume
9095 SMESHDS_Mesh *aMesh = GetMeshDS();
9097 if ( SMDS_MeshElement* newElem = aMesh->AddPolyhedralVolume( poly_nodes, quantities ))
9099 aMesh->SetMeshElementOnShape( newElem, elem->getshapeId() );
9100 myLastCreatedElems.Append( newElem );
9101 ReplaceElemInGroups( elem, newElem, aMesh );
9103 aMesh->RemoveElement( elem );
9109 //================================================================================
9111 * \brief Transform any volume into data of SMDSEntity_Polyhedra
9113 //================================================================================
9115 void volumeToPolyhedron( const SMDS_MeshElement* elem,
9116 vector<const SMDS_MeshNode *> & nodes,
9117 vector<int> & nbNodeInFaces )
9120 nbNodeInFaces.clear();
9121 SMDS_VolumeTool vTool ( elem );
9122 for ( int iF = 0; iF < vTool.NbFaces(); ++iF )
9124 const SMDS_MeshNode** fNodes = vTool.GetFaceNodes( iF );
9125 nodes.insert( nodes.end(), fNodes, fNodes + vTool.NbFaceNodes( iF ));
9126 nbNodeInFaces.push_back( vTool.NbFaceNodes( iF ));
9131 //=======================================================================
9133 * \brief Convert elements contained in a sub-mesh to quadratic
9134 * \return int - nb of checked elements
9136 //=======================================================================
9138 int SMESH_MeshEditor::convertElemToQuadratic(SMESHDS_SubMesh * theSm,
9139 SMESH_MesherHelper& theHelper,
9140 const bool theForce3d)
9143 if( !theSm ) return nbElem;
9145 vector<int> nbNodeInFaces;
9146 vector<const SMDS_MeshNode *> nodes;
9147 SMDS_ElemIteratorPtr ElemItr = theSm->GetElements();
9148 while(ElemItr->more())
9151 const SMDS_MeshElement* elem = ElemItr->next();
9152 if( !elem ) continue;
9154 // analyse a necessity of conversion
9155 const SMDSAbs_ElementType aType = elem->GetType();
9156 if ( aType < SMDSAbs_Edge || aType > SMDSAbs_Volume )
9158 const SMDSAbs_EntityType aGeomType = elem->GetEntityType();
9159 bool hasCentralNodes = false;
9160 if ( elem->IsQuadratic() )
9163 switch ( aGeomType ) {
9164 case SMDSEntity_Quad_Triangle:
9165 case SMDSEntity_Quad_Quadrangle:
9166 case SMDSEntity_Quad_Hexa:
9167 alreadyOK = !theHelper.GetIsBiQuadratic(); break;
9169 case SMDSEntity_BiQuad_Triangle:
9170 case SMDSEntity_BiQuad_Quadrangle:
9171 case SMDSEntity_TriQuad_Hexa:
9172 alreadyOK = theHelper.GetIsBiQuadratic();
9173 hasCentralNodes = true;
9178 // take into account already present modium nodes
9180 case SMDSAbs_Volume:
9181 theHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( elem )); break;
9183 theHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( elem )); break;
9185 theHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( elem )); break;
9191 // get elem data needed to re-create it
9193 const int id = elem->GetID();
9194 const int nbNodes = elem->NbCornerNodes();
9195 nodes.assign(elem->begin_nodes(), elem->end_nodes());
9196 if ( aGeomType == SMDSEntity_Polyhedra )
9197 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >( elem )->GetQuantities();
9198 else if ( aGeomType == SMDSEntity_Hexagonal_Prism )
9199 volumeToPolyhedron( elem, nodes, nbNodeInFaces );
9201 // remove a linear element
9202 GetMeshDS()->RemoveFreeElement(elem, theSm, /*fromGroups=*/false);
9204 // remove central nodes of biquadratic elements (biquad->quad convertion)
9205 if ( hasCentralNodes )
9206 for ( size_t i = nbNodes * 2; i < nodes.size(); ++i )
9207 if ( nodes[i]->NbInverseElements() == 0 )
9208 GetMeshDS()->RemoveFreeNode( nodes[i], theSm, /*fromGroups=*/true );
9210 const SMDS_MeshElement* NewElem = 0;
9216 NewElem = theHelper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9224 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9227 NewElem = theHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9230 NewElem = theHelper.AddPolygonalFace(nodes, id, theForce3d);
9234 case SMDSAbs_Volume :
9238 case SMDSEntity_Tetra:
9239 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9241 case SMDSEntity_Pyramid:
9242 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], id, theForce3d);
9244 case SMDSEntity_Penta:
9245 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], nodes[4], nodes[5], id, theForce3d);
9247 case SMDSEntity_Hexa:
9248 case SMDSEntity_Quad_Hexa:
9249 case SMDSEntity_TriQuad_Hexa:
9250 NewElem = theHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9251 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9253 case SMDSEntity_Hexagonal_Prism:
9255 NewElem = theHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9262 ReplaceElemInGroups( elem, NewElem, GetMeshDS());
9263 if( NewElem && NewElem->getshapeId() < 1 )
9264 theSm->AddElement( NewElem );
9268 //=======================================================================
9269 //function : ConvertToQuadratic
9271 //=======================================================================
9273 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d, const bool theToBiQuad)
9275 SMESHDS_Mesh* meshDS = GetMeshDS();
9277 SMESH_MesherHelper aHelper(*myMesh);
9279 aHelper.SetIsQuadratic( true );
9280 aHelper.SetIsBiQuadratic( theToBiQuad );
9281 aHelper.SetElementsOnShape(true);
9282 aHelper.ToFixNodeParameters( true );
9284 // convert elements assigned to sub-meshes
9285 int nbCheckedElems = 0;
9286 if ( myMesh->HasShapeToMesh() )
9288 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9290 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9291 while ( smIt->more() ) {
9292 SMESH_subMesh* sm = smIt->next();
9293 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() ) {
9294 aHelper.SetSubShape( sm->GetSubShape() );
9295 nbCheckedElems += convertElemToQuadratic(smDS, aHelper, theForce3d);
9301 // convert elements NOT assigned to sub-meshes
9302 int totalNbElems = meshDS->NbEdges() + meshDS->NbFaces() + meshDS->NbVolumes();
9303 if ( nbCheckedElems < totalNbElems ) // not all elements are in sub-meshes
9305 aHelper.SetElementsOnShape(false);
9306 SMESHDS_SubMesh *smDS = 0;
9309 SMDS_EdgeIteratorPtr aEdgeItr = meshDS->edgesIterator();
9310 while( aEdgeItr->more() )
9312 const SMDS_MeshEdge* edge = aEdgeItr->next();
9313 if ( !edge->IsQuadratic() )
9315 int id = edge->GetID();
9316 const SMDS_MeshNode* n1 = edge->GetNode(0);
9317 const SMDS_MeshNode* n2 = edge->GetNode(1);
9319 meshDS->RemoveFreeElement(edge, smDS, /*fromGroups=*/false);
9321 const SMDS_MeshEdge* NewEdge = aHelper.AddEdge(n1, n2, id, theForce3d);
9322 ReplaceElemInGroups( edge, NewEdge, GetMeshDS());
9326 aHelper.AddTLinks( static_cast< const SMDS_MeshEdge* >( edge ));
9331 SMDS_FaceIteratorPtr aFaceItr = meshDS->facesIterator();
9332 while( aFaceItr->more() )
9334 const SMDS_MeshFace* face = aFaceItr->next();
9335 if ( !face ) continue;
9337 const SMDSAbs_EntityType type = face->GetEntityType();
9341 case SMDSEntity_Quad_Triangle:
9342 case SMDSEntity_Quad_Quadrangle:
9343 alreadyOK = !theToBiQuad;
9344 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9346 case SMDSEntity_BiQuad_Triangle:
9347 case SMDSEntity_BiQuad_Quadrangle:
9348 alreadyOK = theToBiQuad;
9349 aHelper.AddTLinks( static_cast< const SMDS_MeshFace* >( face ));
9351 default: alreadyOK = false;
9356 const int id = face->GetID();
9357 vector<const SMDS_MeshNode *> nodes ( face->begin_nodes(), face->end_nodes());
9359 meshDS->RemoveFreeElement(face, smDS, /*fromGroups=*/false);
9361 SMDS_MeshFace * NewFace = 0;
9364 case SMDSEntity_Triangle:
9365 case SMDSEntity_Quad_Triangle:
9366 case SMDSEntity_BiQuad_Triangle:
9367 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], id, theForce3d);
9368 if ( nodes.size() == 7 && nodes[6]->NbInverseElements() == 0 ) // rm a central node
9369 GetMeshDS()->RemoveFreeNode( nodes[6], /*sm=*/0, /*fromGroups=*/true );
9372 case SMDSEntity_Quadrangle:
9373 case SMDSEntity_Quad_Quadrangle:
9374 case SMDSEntity_BiQuad_Quadrangle:
9375 NewFace = aHelper.AddFace(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9376 if ( nodes.size() == 9 && nodes[8]->NbInverseElements() == 0 ) // rm a central node
9377 GetMeshDS()->RemoveFreeNode( nodes[8], /*sm=*/0, /*fromGroups=*/true );
9381 NewFace = aHelper.AddPolygonalFace(nodes, id, theForce3d);
9383 ReplaceElemInGroups( face, NewFace, GetMeshDS());
9387 vector<int> nbNodeInFaces;
9388 SMDS_VolumeIteratorPtr aVolumeItr = meshDS->volumesIterator();
9389 while(aVolumeItr->more())
9391 const SMDS_MeshVolume* volume = aVolumeItr->next();
9392 if ( !volume ) continue;
9394 const SMDSAbs_EntityType type = volume->GetEntityType();
9395 if ( volume->IsQuadratic() )
9400 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9401 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9402 default: alreadyOK = true;
9406 aHelper.AddTLinks( static_cast< const SMDS_MeshVolume* >( volume ));
9410 const int id = volume->GetID();
9411 vector<const SMDS_MeshNode *> nodes (volume->begin_nodes(), volume->end_nodes());
9412 if ( type == SMDSEntity_Polyhedra )
9413 nbNodeInFaces = static_cast<const SMDS_VtkVolume* >(volume)->GetQuantities();
9414 else if ( type == SMDSEntity_Hexagonal_Prism )
9415 volumeToPolyhedron( volume, nodes, nbNodeInFaces );
9417 meshDS->RemoveFreeElement(volume, smDS, /*fromGroups=*/false);
9419 SMDS_MeshVolume * NewVolume = 0;
9422 case SMDSEntity_Tetra:
9423 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d );
9425 case SMDSEntity_Hexa:
9426 case SMDSEntity_Quad_Hexa:
9427 case SMDSEntity_TriQuad_Hexa:
9428 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9429 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9430 for ( size_t i = 20; i < nodes.size(); ++i ) // rm central nodes
9431 if ( nodes[i]->NbInverseElements() == 0 )
9432 GetMeshDS()->RemoveFreeNode( nodes[i], /*sm=*/0, /*fromGroups=*/true );
9434 case SMDSEntity_Pyramid:
9435 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9436 nodes[3], nodes[4], id, theForce3d);
9438 case SMDSEntity_Penta:
9439 NewVolume = aHelper.AddVolume(nodes[0], nodes[1], nodes[2],
9440 nodes[3], nodes[4], nodes[5], id, theForce3d);
9442 case SMDSEntity_Hexagonal_Prism:
9444 NewVolume = aHelper.AddPolyhedralVolume(nodes, nbNodeInFaces, id, theForce3d);
9446 ReplaceElemInGroups(volume, NewVolume, meshDS);
9451 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9452 // aHelper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9453 // aHelper.FixQuadraticElements(myError);
9454 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9458 //================================================================================
9460 * \brief Makes given elements quadratic
9461 * \param theForce3d - if true, the medium nodes will be placed in the middle of link
9462 * \param theElements - elements to make quadratic
9464 //================================================================================
9466 void SMESH_MeshEditor::ConvertToQuadratic(const bool theForce3d,
9467 TIDSortedElemSet& theElements,
9468 const bool theToBiQuad)
9470 if ( theElements.empty() ) return;
9472 // we believe that all theElements are of the same type
9473 const SMDSAbs_ElementType elemType = (*theElements.begin())->GetType();
9475 // get all nodes shared by theElements
9476 TIDSortedNodeSet allNodes;
9477 TIDSortedElemSet::iterator eIt = theElements.begin();
9478 for ( ; eIt != theElements.end(); ++eIt )
9479 allNodes.insert( (*eIt)->begin_nodes(), (*eIt)->end_nodes() );
9481 // complete theElements with elements of lower dim whose all nodes are in allNodes
9483 TIDSortedElemSet quadAdjacentElems [ SMDSAbs_NbElementTypes ]; // quadratic adjacent elements
9484 TIDSortedElemSet checkedAdjacentElems [ SMDSAbs_NbElementTypes ];
9485 TIDSortedNodeSet::iterator nIt = allNodes.begin();
9486 for ( ; nIt != allNodes.end(); ++nIt )
9488 const SMDS_MeshNode* n = *nIt;
9489 SMDS_ElemIteratorPtr invIt = n->GetInverseElementIterator();
9490 while ( invIt->more() )
9492 const SMDS_MeshElement* e = invIt->next();
9493 const SMDSAbs_ElementType type = e->GetType();
9494 if ( e->IsQuadratic() )
9496 quadAdjacentElems[ type ].insert( e );
9499 switch ( e->GetEntityType() ) {
9500 case SMDSEntity_Quad_Triangle:
9501 case SMDSEntity_Quad_Quadrangle:
9502 case SMDSEntity_Quad_Hexa: alreadyOK = !theToBiQuad; break;
9503 case SMDSEntity_BiQuad_Triangle:
9504 case SMDSEntity_BiQuad_Quadrangle:
9505 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; break;
9506 default: alreadyOK = true;
9511 if ( type >= elemType )
9512 continue; // same type or more complex linear element
9514 if ( !checkedAdjacentElems[ type ].insert( e ).second )
9515 continue; // e is already checked
9519 SMDS_NodeIteratorPtr nodeIt = e->nodeIterator();
9520 while ( nodeIt->more() && allIn )
9521 allIn = allNodes.count( nodeIt->next() );
9523 theElements.insert(e );
9527 SMESH_MesherHelper helper(*myMesh);
9528 helper.SetIsQuadratic( true );
9529 helper.SetIsBiQuadratic( theToBiQuad );
9531 // add links of quadratic adjacent elements to the helper
9533 if ( !quadAdjacentElems[SMDSAbs_Edge].empty() )
9534 for ( eIt = quadAdjacentElems[SMDSAbs_Edge].begin();
9535 eIt != quadAdjacentElems[SMDSAbs_Edge].end(); ++eIt )
9537 helper.AddTLinks( static_cast< const SMDS_MeshEdge*> (*eIt) );
9539 if ( !quadAdjacentElems[SMDSAbs_Face].empty() )
9540 for ( eIt = quadAdjacentElems[SMDSAbs_Face].begin();
9541 eIt != quadAdjacentElems[SMDSAbs_Face].end(); ++eIt )
9543 helper.AddTLinks( static_cast< const SMDS_MeshFace*> (*eIt) );
9545 if ( !quadAdjacentElems[SMDSAbs_Volume].empty() )
9546 for ( eIt = quadAdjacentElems[SMDSAbs_Volume].begin();
9547 eIt != quadAdjacentElems[SMDSAbs_Volume].end(); ++eIt )
9549 helper.AddTLinks( static_cast< const SMDS_MeshVolume*> (*eIt) );
9552 // make quadratic (or bi-tri-quadratic) elements instead of linear ones
9554 SMESHDS_Mesh* meshDS = GetMeshDS();
9555 SMESHDS_SubMesh* smDS = 0;
9556 for ( eIt = theElements.begin(); eIt != theElements.end(); ++eIt )
9558 const SMDS_MeshElement* elem = *eIt;
9561 int nbCentralNodes = 0;
9562 switch ( elem->GetEntityType() ) {
9563 // linear convertible
9564 case SMDSEntity_Edge:
9565 case SMDSEntity_Triangle:
9566 case SMDSEntity_Quadrangle:
9567 case SMDSEntity_Tetra:
9568 case SMDSEntity_Pyramid:
9569 case SMDSEntity_Hexa:
9570 case SMDSEntity_Penta: alreadyOK = false; nbCentralNodes = 0; break;
9571 // quadratic that can become bi-quadratic
9572 case SMDSEntity_Quad_Triangle:
9573 case SMDSEntity_Quad_Quadrangle:
9574 case SMDSEntity_Quad_Hexa: alreadyOK =!theToBiQuad; nbCentralNodes = 0; break;
9576 case SMDSEntity_BiQuad_Triangle:
9577 case SMDSEntity_BiQuad_Quadrangle: alreadyOK = theToBiQuad; nbCentralNodes = 1; break;
9578 case SMDSEntity_TriQuad_Hexa: alreadyOK = theToBiQuad; nbCentralNodes = 7; break;
9580 default: alreadyOK = true;
9582 if ( alreadyOK ) continue;
9584 const SMDSAbs_ElementType type = elem->GetType();
9585 const int id = elem->GetID();
9586 const int nbNodes = elem->NbCornerNodes();
9587 vector<const SMDS_MeshNode *> nodes ( elem->begin_nodes(), elem->end_nodes());
9589 helper.SetSubShape( elem->getshapeId() );
9591 if ( !smDS || !smDS->Contains( elem ))
9592 smDS = meshDS->MeshElements( elem->getshapeId() );
9593 meshDS->RemoveFreeElement(elem, smDS, /*fromGroups=*/false);
9595 SMDS_MeshElement * newElem = 0;
9598 case 4: // cases for most frequently used element types go first (for optimization)
9599 if ( type == SMDSAbs_Volume )
9600 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9602 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], nodes[3], id, theForce3d);
9605 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9606 nodes[4], nodes[5], nodes[6], nodes[7], id, theForce3d);
9609 newElem = helper.AddFace (nodes[0], nodes[1], nodes[2], id, theForce3d);
9612 newElem = helper.AddEdge(nodes[0], nodes[1], id, theForce3d);
9615 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9616 nodes[4], id, theForce3d);
9619 newElem = helper.AddVolume(nodes[0], nodes[1], nodes[2], nodes[3],
9620 nodes[4], nodes[5], id, theForce3d);
9624 ReplaceElemInGroups( elem, newElem, meshDS);
9625 if( newElem && smDS )
9626 smDS->AddElement( newElem );
9628 // remove central nodes
9629 for ( size_t i = nodes.size() - nbCentralNodes; i < nodes.size(); ++i )
9630 if ( nodes[i]->NbInverseElements() == 0 )
9631 meshDS->RemoveFreeNode( nodes[i], smDS, /*fromGroups=*/true );
9633 } // loop on theElements
9636 { // setenv NO_FixQuadraticElements to know if FixQuadraticElements() is guilty of bad conversion
9637 // helper.SetSubShape(0); // apply FixQuadraticElements() to the whole mesh
9638 // helper.FixQuadraticElements( myError );
9639 SMESH_MesherHelper( *myMesh ).FixQuadraticElements(myError);
9643 //=======================================================================
9645 * \brief Convert quadratic elements to linear ones and remove quadratic nodes
9646 * \return int - nb of checked elements
9648 //=======================================================================
9650 int SMESH_MeshEditor::removeQuadElem(SMESHDS_SubMesh * theSm,
9651 SMDS_ElemIteratorPtr theItr,
9652 const int theShapeID)
9655 SMESHDS_Mesh* meshDS = GetMeshDS();
9656 ElemFeatures elemType;
9657 vector<const SMDS_MeshNode *> nodes;
9659 while( theItr->more() )
9661 const SMDS_MeshElement* elem = theItr->next();
9663 if( elem && elem->IsQuadratic())
9666 int nbCornerNodes = elem->NbCornerNodes();
9667 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
9669 elemType.Init( elem, /*basicOnly=*/false ).SetID( elem->GetID() ).SetQuad( false );
9671 //remove a quadratic element
9672 if ( !theSm || !theSm->Contains( elem ))
9673 theSm = meshDS->MeshElements( elem->getshapeId() );
9674 meshDS->RemoveFreeElement( elem, theSm, /*fromGroups=*/false );
9676 // remove medium nodes
9677 for ( size_t i = nbCornerNodes; i < nodes.size(); ++i )
9678 if ( nodes[i]->NbInverseElements() == 0 )
9679 meshDS->RemoveFreeNode( nodes[i], theSm );
9681 // add a linear element
9682 nodes.resize( nbCornerNodes );
9683 SMDS_MeshElement * newElem = AddElement( nodes, elemType );
9684 ReplaceElemInGroups(elem, newElem, meshDS);
9685 if( theSm && newElem )
9686 theSm->AddElement( newElem );
9692 //=======================================================================
9693 //function : ConvertFromQuadratic
9695 //=======================================================================
9697 bool SMESH_MeshEditor::ConvertFromQuadratic()
9699 int nbCheckedElems = 0;
9700 if ( myMesh->HasShapeToMesh() )
9702 if ( SMESH_subMesh *aSubMesh = myMesh->GetSubMeshContaining(myMesh->GetShapeToMesh()))
9704 SMESH_subMeshIteratorPtr smIt = aSubMesh->getDependsOnIterator(true,false);
9705 while ( smIt->more() ) {
9706 SMESH_subMesh* sm = smIt->next();
9707 if ( SMESHDS_SubMesh *smDS = sm->GetSubMeshDS() )
9708 nbCheckedElems += removeQuadElem( smDS, smDS->GetElements(), sm->GetId() );
9714 GetMeshDS()->NbEdges() + GetMeshDS()->NbFaces() + GetMeshDS()->NbVolumes();
9715 if ( nbCheckedElems < totalNbElems ) // not all elements are in submeshes
9717 SMESHDS_SubMesh *aSM = 0;
9718 removeQuadElem( aSM, GetMeshDS()->elementsIterator(), 0 );
9726 //================================================================================
9728 * \brief Return true if all medium nodes of the element are in the node set
9730 //================================================================================
9732 bool allMediumNodesIn(const SMDS_MeshElement* elem, TIDSortedNodeSet& nodeSet )
9734 for ( int i = elem->NbCornerNodes(); i < elem->NbNodes(); ++i )
9735 if ( !nodeSet.count( elem->GetNode(i) ))
9741 //================================================================================
9743 * \brief Makes given elements linear
9745 //================================================================================
9747 void SMESH_MeshEditor::ConvertFromQuadratic(TIDSortedElemSet& theElements)
9749 if ( theElements.empty() ) return;
9751 // collect IDs of medium nodes of theElements; some of these nodes will be removed
9752 set<int> mediumNodeIDs;
9753 TIDSortedElemSet::iterator eIt = theElements.begin();
9754 for ( ; eIt != theElements.end(); ++eIt )
9756 const SMDS_MeshElement* e = *eIt;
9757 for ( int i = e->NbCornerNodes(); i < e->NbNodes(); ++i )
9758 mediumNodeIDs.insert( e->GetNode(i)->GetID() );
9761 // replace given elements by linear ones
9762 SMDS_ElemIteratorPtr elemIt = elemSetIterator( theElements );
9763 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9765 // we need to convert remaining elements whose all medium nodes are in mediumNodeIDs
9766 // except those elements sharing medium nodes of quadratic element whose medium nodes
9767 // are not all in mediumNodeIDs
9769 // get remaining medium nodes
9770 TIDSortedNodeSet mediumNodes;
9771 set<int>::iterator nIdsIt = mediumNodeIDs.begin();
9772 for ( ; nIdsIt != mediumNodeIDs.end(); ++nIdsIt )
9773 if ( const SMDS_MeshNode* n = GetMeshDS()->FindNode( *nIdsIt ))
9774 mediumNodes.insert( mediumNodes.end(), n );
9776 // find more quadratic elements to convert
9777 TIDSortedElemSet moreElemsToConvert;
9778 TIDSortedNodeSet::iterator nIt = mediumNodes.begin();
9779 for ( ; nIt != mediumNodes.end(); ++nIt )
9781 SMDS_ElemIteratorPtr invIt = (*nIt)->GetInverseElementIterator();
9782 while ( invIt->more() )
9784 const SMDS_MeshElement* e = invIt->next();
9785 if ( e->IsQuadratic() && allMediumNodesIn( e, mediumNodes ))
9787 // find a more complex element including e and
9788 // whose medium nodes are not in mediumNodes
9789 bool complexFound = false;
9790 for ( int type = e->GetType() + 1; type < SMDSAbs_0DElement; ++type )
9792 SMDS_ElemIteratorPtr invIt2 =
9793 (*nIt)->GetInverseElementIterator( SMDSAbs_ElementType( type ));
9794 while ( invIt2->more() )
9796 const SMDS_MeshElement* eComplex = invIt2->next();
9797 if ( eComplex->IsQuadratic() && !allMediumNodesIn( eComplex, mediumNodes))
9799 int nbCommonNodes = SMESH_MeshAlgos::GetCommonNodes( e, eComplex ).size();
9800 if ( nbCommonNodes == e->NbNodes())
9802 complexFound = true;
9803 type = SMDSAbs_NbElementTypes; // to quit from the outer loop
9809 if ( !complexFound )
9810 moreElemsToConvert.insert( e );
9814 elemIt = elemSetIterator( moreElemsToConvert );
9815 removeQuadElem( /*theSm=*/0, elemIt, /*theShapeID=*/0 );
9818 //=======================================================================
9819 //function : SewSideElements
9821 //=======================================================================
9823 SMESH_MeshEditor::Sew_Error
9824 SMESH_MeshEditor::SewSideElements (TIDSortedElemSet& theSide1,
9825 TIDSortedElemSet& theSide2,
9826 const SMDS_MeshNode* theFirstNode1,
9827 const SMDS_MeshNode* theFirstNode2,
9828 const SMDS_MeshNode* theSecondNode1,
9829 const SMDS_MeshNode* theSecondNode2)
9831 myLastCreatedElems.Clear();
9832 myLastCreatedNodes.Clear();
9834 if ( theSide1.size() != theSide2.size() )
9835 return SEW_DIFF_NB_OF_ELEMENTS;
9837 Sew_Error aResult = SEW_OK;
9839 // 1. Build set of faces representing each side
9840 // 2. Find which nodes of the side 1 to merge with ones on the side 2
9841 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
9843 // =======================================================================
9844 // 1. Build set of faces representing each side:
9845 // =======================================================================
9846 // a. build set of nodes belonging to faces
9847 // b. complete set of faces: find missing faces whose nodes are in set of nodes
9848 // c. create temporary faces representing side of volumes if correspondent
9849 // face does not exist
9851 SMESHDS_Mesh* aMesh = GetMeshDS();
9852 // TODO algoritm not OK with vtkUnstructuredGrid: 2 meshes can't share nodes
9853 //SMDS_Mesh aTmpFacesMesh; // try to use the same mesh
9854 TIDSortedElemSet faceSet1, faceSet2;
9855 set<const SMDS_MeshElement*> volSet1, volSet2;
9856 set<const SMDS_MeshNode*> nodeSet1, nodeSet2;
9857 TIDSortedElemSet * faceSetPtr[] = { &faceSet1, &faceSet2 };
9858 set<const SMDS_MeshElement*> * volSetPtr[] = { &volSet1, &volSet2 };
9859 set<const SMDS_MeshNode*> * nodeSetPtr[] = { &nodeSet1, &nodeSet2 };
9860 TIDSortedElemSet * elemSetPtr[] = { &theSide1, &theSide2 };
9861 int iSide, iFace, iNode;
9863 list<const SMDS_MeshElement* > tempFaceList;
9864 for ( iSide = 0; iSide < 2; iSide++ ) {
9865 set<const SMDS_MeshNode*> * nodeSet = nodeSetPtr[ iSide ];
9866 TIDSortedElemSet * elemSet = elemSetPtr[ iSide ];
9867 TIDSortedElemSet * faceSet = faceSetPtr[ iSide ];
9868 set<const SMDS_MeshElement*> * volSet = volSetPtr [ iSide ];
9869 set<const SMDS_MeshElement*>::iterator vIt;
9870 TIDSortedElemSet::iterator eIt;
9871 set<const SMDS_MeshNode*>::iterator nIt;
9873 // check that given nodes belong to given elements
9874 const SMDS_MeshNode* n1 = ( iSide == 0 ) ? theFirstNode1 : theFirstNode2;
9875 const SMDS_MeshNode* n2 = ( iSide == 0 ) ? theSecondNode1 : theSecondNode2;
9876 int firstIndex = -1, secondIndex = -1;
9877 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9878 const SMDS_MeshElement* elem = *eIt;
9879 if ( firstIndex < 0 ) firstIndex = elem->GetNodeIndex( n1 );
9880 if ( secondIndex < 0 ) secondIndex = elem->GetNodeIndex( n2 );
9881 if ( firstIndex > -1 && secondIndex > -1 ) break;
9883 if ( firstIndex < 0 || secondIndex < 0 ) {
9884 // we can simply return until temporary faces created
9885 return (iSide == 0 ) ? SEW_BAD_SIDE1_NODES : SEW_BAD_SIDE2_NODES;
9888 // -----------------------------------------------------------
9889 // 1a. Collect nodes of existing faces
9890 // and build set of face nodes in order to detect missing
9891 // faces corresponding to sides of volumes
9892 // -----------------------------------------------------------
9894 set< set <const SMDS_MeshNode*> > setOfFaceNodeSet;
9896 // loop on the given element of a side
9897 for (eIt = elemSet->begin(); eIt != elemSet->end(); eIt++ ) {
9898 //const SMDS_MeshElement* elem = *eIt;
9899 const SMDS_MeshElement* elem = *eIt;
9900 if ( elem->GetType() == SMDSAbs_Face ) {
9901 faceSet->insert( elem );
9902 set <const SMDS_MeshNode*> faceNodeSet;
9903 SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
9904 while ( nodeIt->more() ) {
9905 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
9906 nodeSet->insert( n );
9907 faceNodeSet.insert( n );
9909 setOfFaceNodeSet.insert( faceNodeSet );
9911 else if ( elem->GetType() == SMDSAbs_Volume )
9912 volSet->insert( elem );
9914 // ------------------------------------------------------------------------------
9915 // 1b. Complete set of faces: find missing faces whose nodes are in set of nodes
9916 // ------------------------------------------------------------------------------
9918 for ( nIt = nodeSet->begin(); nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
9919 SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
9920 while ( fIt->more() ) { // loop on faces sharing a node
9921 const SMDS_MeshElement* f = fIt->next();
9922 if ( faceSet->find( f ) == faceSet->end() ) {
9923 // check if all nodes are in nodeSet and
9924 // complete setOfFaceNodeSet if they are
9925 set <const SMDS_MeshNode*> faceNodeSet;
9926 SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
9927 bool allInSet = true;
9928 while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
9929 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
9930 if ( nodeSet->find( n ) == nodeSet->end() )
9933 faceNodeSet.insert( n );
9936 faceSet->insert( f );
9937 setOfFaceNodeSet.insert( faceNodeSet );
9943 // -------------------------------------------------------------------------
9944 // 1c. Create temporary faces representing sides of volumes if correspondent
9945 // face does not exist
9946 // -------------------------------------------------------------------------
9948 if ( !volSet->empty() ) {
9949 //int nodeSetSize = nodeSet->size();
9951 // loop on given volumes
9952 for ( vIt = volSet->begin(); vIt != volSet->end(); vIt++ ) {
9953 SMDS_VolumeTool vol (*vIt);
9954 // loop on volume faces: find free faces
9955 // --------------------------------------
9956 list<const SMDS_MeshElement* > freeFaceList;
9957 for ( iFace = 0; iFace < vol.NbFaces(); iFace++ ) {
9958 if ( !vol.IsFreeFace( iFace ))
9960 // check if there is already a face with same nodes in a face set
9961 const SMDS_MeshElement* aFreeFace = 0;
9962 const SMDS_MeshNode** fNodes = vol.GetFaceNodes( iFace );
9963 int nbNodes = vol.NbFaceNodes( iFace );
9964 set <const SMDS_MeshNode*> faceNodeSet;
9965 vol.GetFaceNodes( iFace, faceNodeSet );
9966 bool isNewFace = setOfFaceNodeSet.insert( faceNodeSet ).second;
9968 // no such a face is given but it still can exist, check it
9969 vector<const SMDS_MeshNode *> nodes ( fNodes, fNodes + nbNodes);
9970 aFreeFace = aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false );
9973 // create a temporary face
9974 if ( nbNodes == 3 ) {
9975 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2] );
9976 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2] );
9978 else if ( nbNodes == 4 ) {
9979 //aFreeFace = aTmpFacesMesh.AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
9980 aFreeFace = aMesh->AddFace( fNodes[0],fNodes[1],fNodes[2],fNodes[3] );
9983 vector<const SMDS_MeshNode *> poly_nodes ( fNodes, & fNodes[nbNodes]);
9984 //aFreeFace = aTmpFacesMesh.AddPolygonalFace(poly_nodes);
9985 aFreeFace = aMesh->AddPolygonalFace(poly_nodes);
9988 tempFaceList.push_back( aFreeFace );
9992 freeFaceList.push_back( aFreeFace );
9994 } // loop on faces of a volume
9996 // choose one of several free faces of a volume
9997 // --------------------------------------------
9998 if ( freeFaceList.size() > 1 ) {
9999 // choose a face having max nb of nodes shared by other elems of a side
10000 int maxNbNodes = -1;
10001 list<const SMDS_MeshElement* >::iterator fIt = freeFaceList.begin();
10002 while ( fIt != freeFaceList.end() ) { // loop on free faces
10003 int nbSharedNodes = 0;
10004 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10005 while ( nodeIt->more() ) { // loop on free face nodes
10006 const SMDS_MeshNode* n =
10007 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10008 SMDS_ElemIteratorPtr invElemIt = n->GetInverseElementIterator();
10009 while ( invElemIt->more() ) {
10010 const SMDS_MeshElement* e = invElemIt->next();
10011 nbSharedNodes += faceSet->count( e );
10012 nbSharedNodes += elemSet->count( e );
10015 if ( nbSharedNodes > maxNbNodes ) {
10016 maxNbNodes = nbSharedNodes;
10017 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10019 else if ( nbSharedNodes == maxNbNodes ) {
10023 freeFaceList.erase( fIt++ ); // here fIt++ occurs before erase
10026 if ( freeFaceList.size() > 1 )
10028 // could not choose one face, use another way
10029 // choose a face most close to the bary center of the opposite side
10030 gp_XYZ aBC( 0., 0., 0. );
10031 set <const SMDS_MeshNode*> addedNodes;
10032 TIDSortedElemSet * elemSet2 = elemSetPtr[ 1 - iSide ];
10033 eIt = elemSet2->begin();
10034 for ( eIt = elemSet2->begin(); eIt != elemSet2->end(); eIt++ ) {
10035 SMDS_ElemIteratorPtr nodeIt = (*eIt)->nodesIterator();
10036 while ( nodeIt->more() ) { // loop on free face nodes
10037 const SMDS_MeshNode* n =
10038 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10039 if ( addedNodes.insert( n ).second )
10040 aBC += gp_XYZ( n->X(),n->Y(),n->Z() );
10043 aBC /= addedNodes.size();
10044 double minDist = DBL_MAX;
10045 fIt = freeFaceList.begin();
10046 while ( fIt != freeFaceList.end() ) { // loop on free faces
10048 SMDS_ElemIteratorPtr nodeIt = (*fIt)->nodesIterator();
10049 while ( nodeIt->more() ) { // loop on free face nodes
10050 const SMDS_MeshNode* n =
10051 static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10052 gp_XYZ p( n->X(),n->Y(),n->Z() );
10053 dist += ( aBC - p ).SquareModulus();
10055 if ( dist < minDist ) {
10057 freeFaceList.erase( freeFaceList.begin(), fIt++ );
10060 fIt = freeFaceList.erase( fIt++ );
10063 } // choose one of several free faces of a volume
10065 if ( freeFaceList.size() == 1 ) {
10066 const SMDS_MeshElement* aFreeFace = freeFaceList.front();
10067 faceSet->insert( aFreeFace );
10068 // complete a node set with nodes of a found free face
10069 // for ( iNode = 0; iNode < ; iNode++ )
10070 // nodeSet->insert( fNodes[ iNode ] );
10073 } // loop on volumes of a side
10075 // // complete a set of faces if new nodes in a nodeSet appeared
10076 // // ----------------------------------------------------------
10077 // if ( nodeSetSize != nodeSet->size() ) {
10078 // for ( ; nIt != nodeSet->end(); nIt++ ) { // loop on nodes of iSide
10079 // SMDS_ElemIteratorPtr fIt = (*nIt)->GetInverseElementIterator(SMDSAbs_Face);
10080 // while ( fIt->more() ) { // loop on faces sharing a node
10081 // const SMDS_MeshElement* f = fIt->next();
10082 // if ( faceSet->find( f ) == faceSet->end() ) {
10083 // // check if all nodes are in nodeSet and
10084 // // complete setOfFaceNodeSet if they are
10085 // set <const SMDS_MeshNode*> faceNodeSet;
10086 // SMDS_ElemIteratorPtr nodeIt = f->nodesIterator();
10087 // bool allInSet = true;
10088 // while ( nodeIt->more() && allInSet ) { // loop on nodes of a face
10089 // const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
10090 // if ( nodeSet->find( n ) == nodeSet->end() )
10091 // allInSet = false;
10093 // faceNodeSet.insert( n );
10095 // if ( allInSet ) {
10096 // faceSet->insert( f );
10097 // setOfFaceNodeSet.insert( faceNodeSet );
10103 } // Create temporary faces, if there are volumes given
10106 if ( faceSet1.size() != faceSet2.size() ) {
10107 // delete temporary faces: they are in reverseElements of actual nodes
10108 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10109 // while ( tmpFaceIt->more() )
10110 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10111 // list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10112 // for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10113 // aMesh->RemoveElement(*tmpFaceIt);
10114 MESSAGE("Diff nb of faces");
10115 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10118 // ============================================================
10119 // 2. Find nodes to merge:
10120 // bind a node to remove to a node to put instead
10121 // ============================================================
10123 TNodeNodeMap nReplaceMap; // bind a node to remove to a node to put instead
10124 if ( theFirstNode1 != theFirstNode2 )
10125 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10126 if ( theSecondNode1 != theSecondNode2 )
10127 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10129 LinkID_Gen aLinkID_Gen( GetMeshDS() );
10130 set< long > linkIdSet; // links to process
10131 linkIdSet.insert( aLinkID_Gen.GetLinkID( theFirstNode1, theSecondNode1 ));
10133 typedef pair< const SMDS_MeshNode*, const SMDS_MeshNode* > NLink;
10134 list< NLink > linkList[2];
10135 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10136 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10137 // loop on links in linkList; find faces by links and append links
10138 // of the found faces to linkList
10139 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10140 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ )
10142 NLink link[] = { *linkIt[0], *linkIt[1] };
10143 long linkID = aLinkID_Gen.GetLinkID( link[0].first, link[0].second );
10144 if ( !linkIdSet.count( linkID ) )
10147 // by links, find faces in the face sets,
10148 // and find indices of link nodes in the found faces;
10149 // in a face set, there is only one or no face sharing a link
10150 // ---------------------------------------------------------------
10152 const SMDS_MeshElement* face[] = { 0, 0 };
10153 vector<const SMDS_MeshNode*> fnodes[2];
10154 int iLinkNode[2][2];
10155 TIDSortedElemSet avoidSet;
10156 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10157 const SMDS_MeshNode* n1 = link[iSide].first;
10158 const SMDS_MeshNode* n2 = link[iSide].second;
10159 //cout << "Side " << iSide << " ";
10160 //cout << "L( " << n1->GetID() << ", " << n2->GetID() << " ) " << endl;
10161 // find a face by two link nodes
10162 face[ iSide ] = SMESH_MeshAlgos::FindFaceInSet( n1, n2,
10163 *faceSetPtr[ iSide ], avoidSet,
10164 &iLinkNode[iSide][0],
10165 &iLinkNode[iSide][1] );
10166 if ( face[ iSide ])
10168 //cout << " F " << face[ iSide]->GetID() <<endl;
10169 faceSetPtr[ iSide ]->erase( face[ iSide ]);
10170 // put face nodes to fnodes
10171 if ( face[ iSide ]->IsQuadratic() )
10173 // use interlaced nodes iterator
10174 const SMDS_VtkFace* F = dynamic_cast<const SMDS_VtkFace*>( face[ iSide ]);
10175 if (!F) throw SALOME_Exception(LOCALIZED("not an SMDS_VtkFace"));
10176 SMDS_ElemIteratorPtr nIter = F->interlacedNodesElemIterator();
10177 while ( nIter->more() )
10178 fnodes[ iSide ].push_back( cast2Node( nIter->next() ));
10182 fnodes[ iSide ].assign( face[ iSide ]->begin_nodes(),
10183 face[ iSide ]->end_nodes() );
10185 fnodes[ iSide ].push_back( fnodes[ iSide ].front());
10189 // check similarity of elements of the sides
10190 if (aResult == SEW_OK && (( face[0] && !face[1] ) || ( !face[0] && face[1] ))) {
10191 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10192 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10193 aResult = ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10196 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10198 break; // do not return because it's necessary to remove tmp faces
10201 // set nodes to merge
10202 // -------------------
10204 if ( face[0] && face[1] ) {
10205 const int nbNodes = face[0]->NbNodes();
10206 if ( nbNodes != face[1]->NbNodes() ) {
10207 MESSAGE("Diff nb of face nodes");
10208 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10209 break; // do not return because it s necessary to remove tmp faces
10211 bool reverse[] = { false, false }; // order of nodes in the link
10212 for ( iSide = 0; iSide < 2; iSide++ ) { // loop on 2 sides
10213 // analyse link orientation in faces
10214 int i1 = iLinkNode[ iSide ][ 0 ];
10215 int i2 = iLinkNode[ iSide ][ 1 ];
10216 reverse[ iSide ] = Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1;
10218 int di1 = reverse[0] ? -1 : +1, i1 = iLinkNode[0][1] + di1;
10219 int di2 = reverse[1] ? -1 : +1, i2 = iLinkNode[1][1] + di2;
10220 for ( int i = nbNodes - 2; i > 0; --i, i1 += di1, i2 += di2 )
10222 nReplaceMap.insert ( make_pair ( fnodes[0][ ( i1 + nbNodes ) % nbNodes ],
10223 fnodes[1][ ( i2 + nbNodes ) % nbNodes ]));
10226 // add other links of the faces to linkList
10227 // -----------------------------------------
10229 for ( iNode = 0; iNode < nbNodes; iNode++ ) {
10230 linkID = aLinkID_Gen.GetLinkID( fnodes[0][iNode], fnodes[0][iNode+1] );
10231 pair< set<long>::iterator, bool > iter_isnew = linkIdSet.insert( linkID );
10232 if ( !iter_isnew.second ) { // already in a set: no need to process
10233 linkIdSet.erase( iter_isnew.first );
10235 else // new in set == encountered for the first time: add
10237 const SMDS_MeshNode* n1 = fnodes[0][ iNode ];
10238 const SMDS_MeshNode* n2 = fnodes[0][ iNode + 1];
10239 linkList[0].push_back ( NLink( n1, n2 ));
10240 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10245 if ( faceSetPtr[0]->empty() || faceSetPtr[1]->empty() )
10248 } // loop on link lists
10250 if ( aResult == SEW_OK &&
10251 ( //linkIt[0] != linkList[0].end() ||
10252 !faceSetPtr[0]->empty() || !faceSetPtr[1]->empty() )) {
10253 MESSAGE( (linkIt[0] != linkList[0].end()) <<" "<< (faceSetPtr[0]->empty()) <<
10254 " " << (faceSetPtr[1]->empty()));
10255 aResult = SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10258 // ====================================================================
10259 // 3. Replace nodes in elements of the side 1 and remove replaced nodes
10260 // ====================================================================
10262 // delete temporary faces
10263 // SMDS_FaceIteratorPtr tmpFaceIt = aTmpFacesMesh.facesIterator();
10264 // while ( tmpFaceIt->more() )
10265 // aTmpFacesMesh.RemoveElement( tmpFaceIt->next() );
10266 list<const SMDS_MeshElement* >::iterator tmpFaceIt = tempFaceList.begin();
10267 for (; tmpFaceIt !=tempFaceList.end(); ++tmpFaceIt)
10268 aMesh->RemoveElement(*tmpFaceIt);
10270 if ( aResult != SEW_OK)
10273 list< int > nodeIDsToRemove;
10274 vector< const SMDS_MeshNode*> nodes;
10275 ElemFeatures elemType;
10277 // loop on nodes replacement map
10278 TNodeNodeMap::iterator nReplaceMapIt = nReplaceMap.begin(), nnIt;
10279 for ( ; nReplaceMapIt != nReplaceMap.end(); nReplaceMapIt++ )
10280 if ( (*nReplaceMapIt).first != (*nReplaceMapIt).second )
10282 const SMDS_MeshNode* nToRemove = (*nReplaceMapIt).first;
10283 nodeIDsToRemove.push_back( nToRemove->GetID() );
10284 // loop on elements sharing nToRemove
10285 SMDS_ElemIteratorPtr invElemIt = nToRemove->GetInverseElementIterator();
10286 while ( invElemIt->more() ) {
10287 const SMDS_MeshElement* e = invElemIt->next();
10288 // get a new suite of nodes: make replacement
10289 int nbReplaced = 0, i = 0, nbNodes = e->NbNodes();
10290 nodes.resize( nbNodes );
10291 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
10292 while ( nIt->more() ) {
10293 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
10294 nnIt = nReplaceMap.find( n );
10295 if ( nnIt != nReplaceMap.end() ) {
10297 n = (*nnIt).second;
10301 // if ( nbReplaced == nbNodes && e->GetType() == SMDSAbs_Face )
10302 // elemIDsToRemove.push_back( e->GetID() );
10306 elemType.Init( e, /*basicOnly=*/false ).SetID( e->GetID() );
10307 aMesh->RemoveElement( e );
10309 if ( SMDS_MeshElement* newElem = this->AddElement( nodes, elemType ))
10311 AddToSameGroups( newElem, e, aMesh );
10312 if ( int aShapeId = e->getshapeId() )
10313 aMesh->SetMeshElementOnShape( newElem, aShapeId );
10319 Remove( nodeIDsToRemove, true );
10324 //================================================================================
10326 * \brief Find corresponding nodes in two sets of faces
10327 * \param theSide1 - first face set
10328 * \param theSide2 - second first face
10329 * \param theFirstNode1 - a boundary node of set 1
10330 * \param theFirstNode2 - a node of set 2 corresponding to theFirstNode1
10331 * \param theSecondNode1 - a boundary node of set 1 linked with theFirstNode1
10332 * \param theSecondNode2 - a node of set 2 corresponding to theSecondNode1
10333 * \param nReplaceMap - output map of corresponding nodes
10334 * \return bool - is a success or not
10336 //================================================================================
10339 //#define DEBUG_MATCHING_NODES
10342 SMESH_MeshEditor::Sew_Error
10343 SMESH_MeshEditor::FindMatchingNodes(set<const SMDS_MeshElement*>& theSide1,
10344 set<const SMDS_MeshElement*>& theSide2,
10345 const SMDS_MeshNode* theFirstNode1,
10346 const SMDS_MeshNode* theFirstNode2,
10347 const SMDS_MeshNode* theSecondNode1,
10348 const SMDS_MeshNode* theSecondNode2,
10349 TNodeNodeMap & nReplaceMap)
10351 set<const SMDS_MeshElement*> * faceSetPtr[] = { &theSide1, &theSide2 };
10353 nReplaceMap.clear();
10354 if ( theFirstNode1 != theFirstNode2 )
10355 nReplaceMap.insert( make_pair( theFirstNode1, theFirstNode2 ));
10356 if ( theSecondNode1 != theSecondNode2 )
10357 nReplaceMap.insert( make_pair( theSecondNode1, theSecondNode2 ));
10359 set< SMESH_TLink > linkSet; // set of nodes where order of nodes is ignored
10360 linkSet.insert( SMESH_TLink( theFirstNode1, theSecondNode1 ));
10362 list< NLink > linkList[2];
10363 linkList[0].push_back( NLink( theFirstNode1, theSecondNode1 ));
10364 linkList[1].push_back( NLink( theFirstNode2, theSecondNode2 ));
10366 // loop on links in linkList; find faces by links and append links
10367 // of the found faces to linkList
10368 list< NLink >::iterator linkIt[] = { linkList[0].begin(), linkList[1].begin() } ;
10369 for ( ; linkIt[0] != linkList[0].end(); linkIt[0]++, linkIt[1]++ ) {
10370 NLink link[] = { *linkIt[0], *linkIt[1] };
10371 if ( linkSet.find( link[0] ) == linkSet.end() )
10374 // by links, find faces in the face sets,
10375 // and find indices of link nodes in the found faces;
10376 // in a face set, there is only one or no face sharing a link
10377 // ---------------------------------------------------------------
10379 const SMDS_MeshElement* face[] = { 0, 0 };
10380 list<const SMDS_MeshNode*> notLinkNodes[2];
10381 //bool reverse[] = { false, false }; // order of notLinkNodes
10383 for ( int iSide = 0; iSide < 2; iSide++ ) // loop on 2 sides
10385 const SMDS_MeshNode* n1 = link[iSide].first;
10386 const SMDS_MeshNode* n2 = link[iSide].second;
10387 set<const SMDS_MeshElement*> * faceSet = faceSetPtr[ iSide ];
10388 set< const SMDS_MeshElement* > facesOfNode1;
10389 for ( int iNode = 0; iNode < 2; iNode++ ) // loop on 2 nodes of a link
10391 // during a loop of the first node, we find all faces around n1,
10392 // during a loop of the second node, we find one face sharing both n1 and n2
10393 const SMDS_MeshNode* n = iNode ? n1 : n2; // a node of a link
10394 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
10395 while ( fIt->more() ) { // loop on faces sharing a node
10396 const SMDS_MeshElement* f = fIt->next();
10397 if (faceSet->find( f ) != faceSet->end() && // f is in face set
10398 ! facesOfNode1.insert( f ).second ) // f encounters twice
10400 if ( face[ iSide ] ) {
10401 MESSAGE( "2 faces per link " );
10402 return ( iSide ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10405 faceSet->erase( f );
10407 // get not link nodes
10408 int nbN = f->NbNodes();
10409 if ( f->IsQuadratic() )
10411 nbNodes[ iSide ] = nbN;
10412 list< const SMDS_MeshNode* > & nodes = notLinkNodes[ iSide ];
10413 int i1 = f->GetNodeIndex( n1 );
10414 int i2 = f->GetNodeIndex( n2 );
10415 int iEnd = nbN, iBeg = -1, iDelta = 1;
10416 bool reverse = ( Abs( i1 - i2 ) == 1 ? i1 > i2 : i2 > i1 );
10418 std::swap( iEnd, iBeg ); iDelta = -1;
10423 if ( i == iEnd ) i = iBeg + iDelta;
10424 if ( i == i1 ) break;
10425 nodes.push_back ( f->GetNode( i ) );
10431 // check similarity of elements of the sides
10432 if (( face[0] && !face[1] ) || ( !face[0] && face[1] )) {
10433 MESSAGE("Correspondent face not found on side " << ( face[0] ? 1 : 0 ));
10434 if ( nReplaceMap.size() == 2 ) { // faces on input nodes not found
10435 return ( face[0] ? SEW_BAD_SIDE2_NODES : SEW_BAD_SIDE1_NODES );
10438 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10442 // set nodes to merge
10443 // -------------------
10445 if ( face[0] && face[1] ) {
10446 if ( nbNodes[0] != nbNodes[1] ) {
10447 MESSAGE("Diff nb of face nodes");
10448 return SEW_TOPO_DIFF_SETS_OF_ELEMENTS;
10450 #ifdef DEBUG_MATCHING_NODES
10451 MESSAGE ( " Link 1: " << link[0].first->GetID() <<" "<< link[0].second->GetID()
10452 << " F 1: " << face[0] << "| Link 2: " << link[1].first->GetID() <<" "
10453 << link[1].second->GetID() << " F 2: " << face[1] << " | Bind: " ) ;
10455 int nbN = nbNodes[0];
10457 list<const SMDS_MeshNode*>::iterator n1 = notLinkNodes[0].begin();
10458 list<const SMDS_MeshNode*>::iterator n2 = notLinkNodes[1].begin();
10459 for ( int i = 0 ; i < nbN - 2; ++i ) {
10460 #ifdef DEBUG_MATCHING_NODES
10461 MESSAGE ( (*n1)->GetID() << " to " << (*n2)->GetID() );
10463 nReplaceMap.insert( make_pair( *(n1++), *(n2++) ));
10467 // add other links of the face 1 to linkList
10468 // -----------------------------------------
10470 const SMDS_MeshElement* f0 = face[0];
10471 const SMDS_MeshNode* n1 = f0->GetNode( nbN - 1 );
10472 for ( int i = 0; i < nbN; i++ )
10474 const SMDS_MeshNode* n2 = f0->GetNode( i );
10475 pair< set< SMESH_TLink >::iterator, bool > iter_isnew =
10476 linkSet.insert( SMESH_TLink( n1, n2 ));
10477 if ( !iter_isnew.second ) { // already in a set: no need to process
10478 linkSet.erase( iter_isnew.first );
10480 else // new in set == encountered for the first time: add
10482 #ifdef DEBUG_MATCHING_NODES
10483 MESSAGE ( "Add link 1: " << n1->GetID() << " " << n2->GetID() << " "
10484 << " | link 2: " << nReplaceMap[n1]->GetID() << " " << nReplaceMap[n2]->GetID() << " " );
10486 linkList[0].push_back ( NLink( n1, n2 ));
10487 linkList[1].push_back ( NLink( nReplaceMap[n1], nReplaceMap[n2] ));
10492 } // loop on link lists
10497 //================================================================================
10499 * \brief Create elements equal (on same nodes) to given ones
10500 * \param [in] theElements - a set of elems to duplicate. If it is empty, all
10501 * elements of the uppest dimension are duplicated.
10503 //================================================================================
10505 void SMESH_MeshEditor::DoubleElements( const TIDSortedElemSet& theElements )
10507 ClearLastCreated();
10508 SMESHDS_Mesh* mesh = GetMeshDS();
10510 // get an element type and an iterator over elements
10512 SMDSAbs_ElementType type = SMDSAbs_All;
10513 SMDS_ElemIteratorPtr elemIt;
10514 vector< const SMDS_MeshElement* > allElems;
10515 if ( theElements.empty() )
10517 if ( mesh->NbNodes() == 0 )
10519 // get most complex type
10520 SMDSAbs_ElementType types[SMDSAbs_NbElementTypes] = {
10521 SMDSAbs_Volume, SMDSAbs_Face, SMDSAbs_Edge,
10522 SMDSAbs_0DElement, SMDSAbs_Ball, SMDSAbs_Node
10524 for ( int i = 0; i < SMDSAbs_NbElementTypes; ++i )
10525 if ( mesh->GetMeshInfo().NbElements( types[i] ))
10530 // put all elements in the vector <allElems>
10531 allElems.reserve( mesh->GetMeshInfo().NbElements( type ));
10532 elemIt = mesh->elementsIterator( type );
10533 while ( elemIt->more() )
10534 allElems.push_back( elemIt->next());
10535 elemIt = elemSetIterator( allElems );
10539 type = (*theElements.begin())->GetType();
10540 elemIt = elemSetIterator( theElements );
10543 // duplicate elements
10545 ElemFeatures elemType;
10547 vector< const SMDS_MeshNode* > nodes;
10548 while ( elemIt->more() )
10550 const SMDS_MeshElement* elem = elemIt->next();
10551 if ( elem->GetType() != type )
10554 elemType.Init( elem, /*basicOnly=*/false );
10555 nodes.assign( elem->begin_nodes(), elem->end_nodes() );
10557 AddElement( nodes, elemType );
10561 //================================================================================
10563 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10564 \param theElems - the list of elements (edges or faces) to be replicated
10565 The nodes for duplication could be found from these elements
10566 \param theNodesNot - list of nodes to NOT replicate
10567 \param theAffectedElems - the list of elements (cells and edges) to which the
10568 replicated nodes should be associated to.
10569 \return TRUE if operation has been completed successfully, FALSE otherwise
10571 //================================================================================
10573 bool SMESH_MeshEditor::DoubleNodes( const TIDSortedElemSet& theElems,
10574 const TIDSortedElemSet& theNodesNot,
10575 const TIDSortedElemSet& theAffectedElems )
10577 myLastCreatedElems.Clear();
10578 myLastCreatedNodes.Clear();
10580 if ( theElems.size() == 0 )
10583 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10588 TNodeNodeMap anOldNodeToNewNode;
10589 // duplicate elements and nodes
10590 res = doubleNodes( aMeshDS, theElems, theNodesNot, anOldNodeToNewNode, true );
10591 // replce nodes by duplications
10592 res = doubleNodes( aMeshDS, theAffectedElems, theNodesNot, anOldNodeToNewNode, false );
10596 //================================================================================
10598 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10599 \param theMeshDS - mesh instance
10600 \param theElems - the elements replicated or modified (nodes should be changed)
10601 \param theNodesNot - nodes to NOT replicate
10602 \param theNodeNodeMap - relation of old node to new created node
10603 \param theIsDoubleElem - flag os to replicate element or modify
10604 \return TRUE if operation has been completed successfully, FALSE otherwise
10606 //================================================================================
10608 bool SMESH_MeshEditor::doubleNodes(SMESHDS_Mesh* theMeshDS,
10609 const TIDSortedElemSet& theElems,
10610 const TIDSortedElemSet& theNodesNot,
10611 TNodeNodeMap& theNodeNodeMap,
10612 const bool theIsDoubleElem )
10614 // iterate through element and duplicate them (by nodes duplication)
10616 std::vector<const SMDS_MeshNode*> newNodes;
10617 ElemFeatures elemType;
10619 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10620 for ( ; elemItr != theElems.end(); ++elemItr )
10622 const SMDS_MeshElement* anElem = *elemItr;
10626 // duplicate nodes to duplicate element
10627 bool isDuplicate = false;
10628 newNodes.resize( anElem->NbNodes() );
10629 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10631 while ( anIter->more() )
10633 const SMDS_MeshNode* aCurrNode = static_cast<const SMDS_MeshNode*>( anIter->next() );
10634 const SMDS_MeshNode* aNewNode = aCurrNode;
10635 TNodeNodeMap::iterator n2n = theNodeNodeMap.find( aCurrNode );
10636 if ( n2n != theNodeNodeMap.end() )
10638 aNewNode = n2n->second;
10640 else if ( theIsDoubleElem && !theNodesNot.count( aCurrNode ))
10643 aNewNode = theMeshDS->AddNode( aCurrNode->X(), aCurrNode->Y(), aCurrNode->Z() );
10644 copyPosition( aCurrNode, aNewNode );
10645 theNodeNodeMap[ aCurrNode ] = aNewNode;
10646 myLastCreatedNodes.Append( aNewNode );
10648 isDuplicate |= (aCurrNode != aNewNode);
10649 newNodes[ ind++ ] = aNewNode;
10651 if ( !isDuplicate )
10654 if ( theIsDoubleElem )
10655 AddElement( newNodes, elemType.Init( anElem, /*basicOnly=*/false ));
10657 theMeshDS->ChangeElementNodes( anElem, &newNodes[ 0 ], newNodes.size() );
10664 //================================================================================
10666 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10667 \param theNodes - identifiers of nodes to be doubled
10668 \param theModifiedElems - identifiers of elements to be updated by the new (doubled)
10669 nodes. If list of element identifiers is empty then nodes are doubled but
10670 they not assigned to elements
10671 \return TRUE if operation has been completed successfully, FALSE otherwise
10673 //================================================================================
10675 bool SMESH_MeshEditor::DoubleNodes( const std::list< int >& theListOfNodes,
10676 const std::list< int >& theListOfModifiedElems )
10678 myLastCreatedElems.Clear();
10679 myLastCreatedNodes.Clear();
10681 if ( theListOfNodes.size() == 0 )
10684 SMESHDS_Mesh* aMeshDS = GetMeshDS();
10688 // iterate through nodes and duplicate them
10690 std::map< const SMDS_MeshNode*, const SMDS_MeshNode* > anOldNodeToNewNode;
10692 std::list< int >::const_iterator aNodeIter;
10693 for ( aNodeIter = theListOfNodes.begin(); aNodeIter != theListOfNodes.end(); ++aNodeIter )
10695 int aCurr = *aNodeIter;
10696 SMDS_MeshNode* aNode = (SMDS_MeshNode*)aMeshDS->FindNode( aCurr );
10702 const SMDS_MeshNode* aNewNode = aMeshDS->AddNode( aNode->X(), aNode->Y(), aNode->Z() );
10705 copyPosition( aNode, aNewNode );
10706 anOldNodeToNewNode[ aNode ] = aNewNode;
10707 myLastCreatedNodes.Append( aNewNode );
10711 // Create map of new nodes for modified elements
10713 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> > anElemToNodes;
10715 std::list< int >::const_iterator anElemIter;
10716 for ( anElemIter = theListOfModifiedElems.begin();
10717 anElemIter != theListOfModifiedElems.end(); ++anElemIter )
10719 int aCurr = *anElemIter;
10720 SMDS_MeshElement* anElem = (SMDS_MeshElement*)aMeshDS->FindElement( aCurr );
10724 vector<const SMDS_MeshNode*> aNodeArr( anElem->NbNodes() );
10726 SMDS_ElemIteratorPtr anIter = anElem->nodesIterator();
10728 while ( anIter->more() )
10730 SMDS_MeshNode* aCurrNode = (SMDS_MeshNode*)anIter->next();
10731 if ( aCurr && anOldNodeToNewNode.find( aCurrNode ) != anOldNodeToNewNode.end() )
10733 const SMDS_MeshNode* aNewNode = anOldNodeToNewNode[ aCurrNode ];
10734 aNodeArr[ ind++ ] = aNewNode;
10737 aNodeArr[ ind++ ] = aCurrNode;
10739 anElemToNodes[ anElem ] = aNodeArr;
10742 // Change nodes of elements
10744 std::map< SMDS_MeshElement*, vector<const SMDS_MeshNode*> >::iterator
10745 anElemToNodesIter = anElemToNodes.begin();
10746 for ( ; anElemToNodesIter != anElemToNodes.end(); ++anElemToNodesIter )
10748 const SMDS_MeshElement* anElem = anElemToNodesIter->first;
10749 vector<const SMDS_MeshNode*> aNodeArr = anElemToNodesIter->second;
10752 aMeshDS->ChangeElementNodes( anElem, &aNodeArr[ 0 ], anElem->NbNodes() );
10761 //================================================================================
10763 \brief Check if element located inside shape
10764 \return TRUE if IN or ON shape, FALSE otherwise
10766 //================================================================================
10768 template<class Classifier>
10769 bool isInside(const SMDS_MeshElement* theElem,
10770 Classifier& theClassifier,
10771 const double theTol)
10773 gp_XYZ centerXYZ (0, 0, 0);
10774 SMDS_ElemIteratorPtr aNodeItr = theElem->nodesIterator();
10775 while (aNodeItr->more())
10776 centerXYZ += SMESH_TNodeXYZ(cast2Node( aNodeItr->next()));
10778 gp_Pnt aPnt = centerXYZ / theElem->NbNodes();
10779 theClassifier.Perform(aPnt, theTol);
10780 TopAbs_State aState = theClassifier.State();
10781 return (aState == TopAbs_IN || aState == TopAbs_ON );
10784 //================================================================================
10786 * \brief Classifier of the 3D point on the TopoDS_Face
10787 * with interaface suitable for isInside()
10789 //================================================================================
10791 struct _FaceClassifier
10793 Extrema_ExtPS _extremum;
10794 BRepAdaptor_Surface _surface;
10795 TopAbs_State _state;
10797 _FaceClassifier(const TopoDS_Face& face):_extremum(),_surface(face),_state(TopAbs_OUT)
10799 _extremum.Initialize( _surface,
10800 _surface.FirstUParameter(), _surface.LastUParameter(),
10801 _surface.FirstVParameter(), _surface.LastVParameter(),
10802 _surface.Tolerance(), _surface.Tolerance() );
10804 void Perform(const gp_Pnt& aPnt, double theTol)
10807 _state = TopAbs_OUT;
10808 _extremum.Perform(aPnt);
10809 if ( _extremum.IsDone() )
10810 for ( int iSol = 1; iSol <= _extremum.NbExt() && _state == TopAbs_OUT; ++iSol)
10811 _state = ( _extremum.SquareDistance(iSol) <= theTol ? TopAbs_IN : TopAbs_OUT );
10813 TopAbs_State State() const
10820 //================================================================================
10822 \brief Identify the elements that will be affected by node duplication (actual duplication is not performed).
10823 This method is the first step of DoubleNodeElemGroupsInRegion.
10824 \param theElems - list of groups of elements (edges or faces) to be replicated
10825 \param theNodesNot - list of groups of nodes not to replicated
10826 \param theShape - shape to detect affected elements (element which geometric center
10827 located on or inside shape). If the shape is null, detection is done on faces orientations
10828 (select elements with a gravity center on the side given by faces normals).
10829 This mode (null shape) is faster, but works only when theElems are faces, with coherents orientations.
10830 The replicated nodes should be associated to affected elements.
10831 \return groups of affected elements
10832 \sa DoubleNodeElemGroupsInRegion()
10834 //================================================================================
10836 bool SMESH_MeshEditor::AffectedElemGroupsInRegion( const TIDSortedElemSet& theElems,
10837 const TIDSortedElemSet& theNodesNot,
10838 const TopoDS_Shape& theShape,
10839 TIDSortedElemSet& theAffectedElems)
10841 if ( theShape.IsNull() )
10843 std::set<const SMDS_MeshNode*> alreadyCheckedNodes;
10844 std::set<const SMDS_MeshElement*> alreadyCheckedElems;
10845 std::set<const SMDS_MeshElement*> edgesToCheck;
10846 alreadyCheckedNodes.clear();
10847 alreadyCheckedElems.clear();
10848 edgesToCheck.clear();
10850 // --- iterates on elements to be replicated and get elements by back references from their nodes
10852 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10853 for ( ; elemItr != theElems.end(); ++elemItr )
10855 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
10856 if (!anElem || (anElem->GetType() != SMDSAbs_Face))
10859 SMESH_MeshAlgos::FaceNormal( anElem, normal, /*normalized=*/true );
10860 std::set<const SMDS_MeshNode*> nodesElem;
10862 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
10863 while ( nodeItr->more() )
10865 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10866 nodesElem.insert(aNode);
10868 std::set<const SMDS_MeshNode*>::iterator nodit = nodesElem.begin();
10869 for (; nodit != nodesElem.end(); nodit++)
10871 const SMDS_MeshNode* aNode = *nodit;
10872 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
10874 if (alreadyCheckedNodes.find(aNode) != alreadyCheckedNodes.end())
10876 alreadyCheckedNodes.insert(aNode);
10877 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
10878 while ( backElemItr->more() )
10880 const SMDS_MeshElement* curElem = backElemItr->next();
10881 if (alreadyCheckedElems.find(curElem) != alreadyCheckedElems.end())
10883 if (theElems.find(curElem) != theElems.end())
10885 alreadyCheckedElems.insert(curElem);
10886 double x=0, y=0, z=0;
10888 SMDS_ElemIteratorPtr nodeItr2 = curElem->nodesIterator();
10889 while ( nodeItr2->more() )
10891 const SMDS_MeshNode* anotherNode = cast2Node(nodeItr2->next());
10892 x += anotherNode->X();
10893 y += anotherNode->Y();
10894 z += anotherNode->Z();
10898 p.SetCoord( x/nb -aNode->X(),
10900 z/nb -aNode->Z() );
10903 theAffectedElems.insert( curElem );
10905 else if (curElem->GetType() == SMDSAbs_Edge)
10906 edgesToCheck.insert(curElem);
10910 // --- add also edges lying on the set of faces (all nodes in alreadyCheckedNodes)
10911 std::set<const SMDS_MeshElement*>::iterator eit = edgesToCheck.begin();
10912 for( ; eit != edgesToCheck.end(); eit++)
10914 bool onside = true;
10915 const SMDS_MeshElement* anEdge = *eit;
10916 SMDS_ElemIteratorPtr nodeItr = anEdge->nodesIterator();
10917 while ( nodeItr->more() )
10919 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10920 if (alreadyCheckedNodes.find(aNode) == alreadyCheckedNodes.end())
10928 theAffectedElems.insert(anEdge);
10934 const double aTol = Precision::Confusion();
10935 auto_ptr< BRepClass3d_SolidClassifier> bsc3d;
10936 auto_ptr<_FaceClassifier> aFaceClassifier;
10937 if ( theShape.ShapeType() == TopAbs_SOLID )
10939 bsc3d.reset( new BRepClass3d_SolidClassifier(theShape));;
10940 bsc3d->PerformInfinitePoint(aTol);
10942 else if (theShape.ShapeType() == TopAbs_FACE )
10944 aFaceClassifier.reset( new _FaceClassifier(TopoDS::Face(theShape)));
10947 // iterates on indicated elements and get elements by back references from their nodes
10948 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
10949 for ( ; elemItr != theElems.end(); ++elemItr )
10951 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
10954 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
10955 while ( nodeItr->more() )
10957 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
10958 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
10960 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
10961 while ( backElemItr->more() )
10963 const SMDS_MeshElement* curElem = backElemItr->next();
10964 if ( curElem && theElems.find(curElem) == theElems.end() &&
10966 isInside( curElem, *bsc3d, aTol ) :
10967 isInside( curElem, *aFaceClassifier, aTol )))
10968 theAffectedElems.insert( curElem );
10976 //================================================================================
10978 \brief Creates a hole in a mesh by doubling the nodes of some particular elements
10979 \param theElems - group of of elements (edges or faces) to be replicated
10980 \param theNodesNot - group of nodes not to replicate
10981 \param theShape - shape to detect affected elements (element which geometric center
10982 located on or inside shape).
10983 The replicated nodes should be associated to affected elements.
10984 \return TRUE if operation has been completed successfully, FALSE otherwise
10986 //================================================================================
10988 bool SMESH_MeshEditor::DoubleNodesInRegion( const TIDSortedElemSet& theElems,
10989 const TIDSortedElemSet& theNodesNot,
10990 const TopoDS_Shape& theShape )
10992 if ( theShape.IsNull() )
10995 const double aTol = Precision::Confusion();
10996 SMESHUtils::Deleter< BRepClass3d_SolidClassifier> bsc3d;
10997 SMESHUtils::Deleter<_FaceClassifier> aFaceClassifier;
10998 if ( theShape.ShapeType() == TopAbs_SOLID )
11000 bsc3d._obj = new BRepClass3d_SolidClassifier( theShape );
11001 bsc3d->PerformInfinitePoint(aTol);
11003 else if (theShape.ShapeType() == TopAbs_FACE )
11005 aFaceClassifier._obj = new _FaceClassifier( TopoDS::Face( theShape ));
11008 // iterates on indicated elements and get elements by back references from their nodes
11009 TIDSortedElemSet anAffected;
11010 TIDSortedElemSet::const_iterator elemItr = theElems.begin();
11011 for ( ; elemItr != theElems.end(); ++elemItr )
11013 SMDS_MeshElement* anElem = (SMDS_MeshElement*)*elemItr;
11017 SMDS_ElemIteratorPtr nodeItr = anElem->nodesIterator();
11018 while ( nodeItr->more() )
11020 const SMDS_MeshNode* aNode = cast2Node(nodeItr->next());
11021 if ( !aNode || theNodesNot.find(aNode) != theNodesNot.end() )
11023 SMDS_ElemIteratorPtr backElemItr = aNode->GetInverseElementIterator();
11024 while ( backElemItr->more() )
11026 const SMDS_MeshElement* curElem = backElemItr->next();
11027 if ( curElem && theElems.find(curElem) == theElems.end() &&
11029 isInside( curElem, *bsc3d, aTol ) :
11030 isInside( curElem, *aFaceClassifier, aTol )))
11031 anAffected.insert( curElem );
11035 return DoubleNodes( theElems, theNodesNot, anAffected );
11039 * \brief compute an oriented angle between two planes defined by four points.
11040 * The vector (p0,p1) defines the intersection of the 2 planes (p0,p1,g1) and (p0,p1,g2)
11041 * @param p0 base of the rotation axe
11042 * @param p1 extremity of the rotation axe
11043 * @param g1 belongs to the first plane
11044 * @param g2 belongs to the second plane
11046 double SMESH_MeshEditor::OrientedAngle(const gp_Pnt& p0, const gp_Pnt& p1, const gp_Pnt& g1, const gp_Pnt& g2)
11048 gp_Vec vref(p0, p1);
11051 gp_Vec n1 = vref.Crossed(v1);
11052 gp_Vec n2 = vref.Crossed(v2);
11054 return n2.AngleWithRef(n1, vref);
11056 catch ( Standard_Failure ) {
11058 return Max( v1.Magnitude(), v2.Magnitude() );
11062 * \brief Double nodes on shared faces between groups of volumes and create flat elements on demand.
11063 * The list of groups must contain at least two groups. The groups have to be disjoint: no common element into two different groups.
11064 * The nodes of the internal faces at the boundaries of the groups are doubled. Optionally, the internal faces are replaced by flat elements.
11065 * Triangles are transformed into prisms, and quadrangles into hexahedrons.
11066 * The flat elements are stored in groups of volumes. These groups are named according to the position of the group in the list:
11067 * 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.
11068 * 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.
11069 * All the flat elements are gathered into the group named "joints3D" (or "joints2D" in 2D situation).
11070 * The flat element of the multiple junctions between the simple junction are stored in a group named "jointsMultiples".
11071 * \param theElems - list of groups of volumes, where a group of volume is a set of
11072 * SMDS_MeshElements sorted by Id.
11073 * \param createJointElems - if TRUE, create the elements
11074 * \param onAllBoundaries - if TRUE, the nodes and elements are also created on
11075 * the boundary between \a theDomains and the rest mesh
11076 * \return TRUE if operation has been completed successfully, FALSE otherwise
11078 bool SMESH_MeshEditor::DoubleNodesOnGroupBoundaries( const std::vector<TIDSortedElemSet>& theElems,
11079 bool createJointElems,
11080 bool onAllBoundaries)
11082 // MESSAGE("----------------------------------------------");
11083 // MESSAGE("SMESH_MeshEditor::doubleNodesOnGroupBoundaries");
11084 // MESSAGE("----------------------------------------------");
11086 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11087 meshDS->BuildDownWardConnectivity(true);
11089 SMDS_UnstructuredGrid *grid = meshDS->getGrid();
11091 // --- build the list of faces shared by 2 domains (group of elements), with their domain and volume indexes
11092 // build the list of cells with only a node or an edge on the border, with their domain and volume indexes
11093 // build the list of nodes shared by 2 or more domains, with their domain indexes
11095 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceDomains; // face --> (id domain --> id volume)
11096 std::map<int,int>celldom; // cell vtkId --> domain
11097 std::map<DownIdType, std::map<int,int>, DownIdCompare> cellDomains; // oldNode --> (id domain --> id cell)
11098 std::map<int, std::map<int,int> > nodeDomains; // oldId --> (domainId --> newId)
11099 faceDomains.clear();
11101 cellDomains.clear();
11102 nodeDomains.clear();
11103 std::map<int,int> emptyMap;
11104 std::set<int> emptySet;
11107 //MESSAGE(".. Number of domains :"<<theElems.size());
11109 TIDSortedElemSet theRestDomElems;
11110 const int iRestDom = -1;
11111 const int idom0 = onAllBoundaries ? iRestDom : 0;
11112 const int nbDomains = theElems.size();
11114 // Check if the domains do not share an element
11115 for (int idom = 0; idom < nbDomains-1; idom++)
11117 // MESSAGE("... Check of domain #" << idom);
11118 const TIDSortedElemSet& domain = theElems[idom];
11119 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11120 for (; elemItr != domain.end(); ++elemItr)
11122 const SMDS_MeshElement* anElem = *elemItr;
11123 int idombisdeb = idom + 1 ;
11124 // check if the element belongs to a domain further in the list
11125 for ( size_t idombis = idombisdeb; idombis < theElems.size(); idombis++ )
11127 const TIDSortedElemSet& domainbis = theElems[idombis];
11128 if ( domainbis.count( anElem ))
11130 MESSAGE(".... Domain #" << idom);
11131 MESSAGE(".... Domain #" << idombis);
11132 throw SALOME_Exception("The domains are not disjoint.");
11139 for (int idom = 0; idom < nbDomains; idom++)
11142 // --- build a map (face to duplicate --> volume to modify)
11143 // with all the faces shared by 2 domains (group of elements)
11144 // and corresponding volume of this domain, for each shared face.
11145 // a volume has a face shared by 2 domains if it has a neighbor which is not in his domain.
11147 //MESSAGE("... Neighbors of domain #" << idom);
11148 const TIDSortedElemSet& domain = theElems[idom];
11149 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11150 for (; elemItr != domain.end(); ++elemItr)
11152 const SMDS_MeshElement* anElem = *elemItr;
11155 int vtkId = anElem->getVtkId();
11156 //MESSAGE(" vtkId " << vtkId << " smdsId " << anElem->GetID());
11157 int neighborsVtkIds[NBMAXNEIGHBORS];
11158 int downIds[NBMAXNEIGHBORS];
11159 unsigned char downTypes[NBMAXNEIGHBORS];
11160 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
11161 for (int n = 0; n < nbNeighbors; n++)
11163 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
11164 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
11165 if (elem && ! domain.count(elem)) // neighbor is in another domain : face is shared
11168 for ( size_t idombis = 0; idombis < theElems.size() && !ok; idombis++) // check if the neighbor belongs to another domain of the list
11170 // MESSAGE("Domain " << idombis);
11171 const TIDSortedElemSet& domainbis = theElems[idombis];
11172 if ( domainbis.count(elem)) ok = true ; // neighbor is in a correct domain : face is kept
11174 if ( ok || onAllBoundaries ) // the characteristics of the face is stored
11176 DownIdType face(downIds[n], downTypes[n]);
11177 if (!faceDomains[face].count(idom))
11179 faceDomains[face][idom] = vtkId; // volume associated to face in this domain
11180 celldom[vtkId] = idom;
11181 //MESSAGE(" cell with a border " << vtkId << " domain " << idom);
11185 theRestDomElems.insert( elem );
11186 faceDomains[face][iRestDom] = neighborsVtkIds[n];
11187 celldom[neighborsVtkIds[n]] = iRestDom;
11195 //MESSAGE("Number of shared faces " << faceDomains.size());
11196 std::map<DownIdType, std::map<int, int>, DownIdCompare>::iterator itface;
11198 // --- explore the shared faces domain by domain,
11199 // explore the nodes of the face and see if they belong to a cell in the domain,
11200 // which has only a node or an edge on the border (not a shared face)
11202 for (int idomain = idom0; idomain < nbDomains; idomain++)
11204 //MESSAGE("Domain " << idomain);
11205 const TIDSortedElemSet& domain = (idomain == iRestDom) ? theRestDomElems : theElems[idomain];
11206 itface = faceDomains.begin();
11207 for (; itface != faceDomains.end(); ++itface)
11209 const std::map<int, int>& domvol = itface->second;
11210 if (!domvol.count(idomain))
11212 DownIdType face = itface->first;
11213 //MESSAGE(" --- face " << face.cellId);
11214 std::set<int> oldNodes;
11216 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11217 std::set<int>::iterator itn = oldNodes.begin();
11218 for (; itn != oldNodes.end(); ++itn)
11221 //MESSAGE(" node " << oldId);
11222 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11223 for (int i=0; i<l.ncells; i++)
11225 int vtkId = l.cells[i];
11226 const SMDS_MeshElement* anElem = GetMeshDS()->FindElement(GetMeshDS()->fromVtkToSmds(vtkId));
11227 if (!domain.count(anElem))
11229 int vtkType = grid->GetCellType(vtkId);
11230 int downId = grid->CellIdToDownId(vtkId);
11233 MESSAGE("doubleNodesOnGroupBoundaries: internal algorithm problem");
11234 continue; // not OK at this stage of the algorithm:
11235 //no cells created after BuildDownWardConnectivity
11237 DownIdType aCell(downId, vtkType);
11238 cellDomains[aCell][idomain] = vtkId;
11239 celldom[vtkId] = idomain;
11240 //MESSAGE(" cell " << vtkId << " domain " << idomain);
11246 // --- explore the shared faces domain by domain, to duplicate the nodes in a coherent way
11247 // for each shared face, get the nodes
11248 // for each node, for each domain of the face, create a clone of the node
11250 // --- edges at the intersection of 3 or 4 domains, with the order of domains to build
11251 // junction elements of type prism or hexa. the key is the pair of nodesId (lower first)
11252 // the value is the ordered domain ids. (more than 4 domains not taken into account)
11254 std::map<std::vector<int>, std::vector<int> > edgesMultiDomains; // nodes of edge --> ordered domains
11255 std::map<int, std::vector<int> > mutipleNodes; // nodes multi domains with domain order
11256 std::map<int, std::vector<int> > mutipleNodesToFace; // nodes multi domains with domain order to transform in Face (junction between 3 or more 2D domains)
11258 //MESSAGE(".. Duplication of the nodes");
11259 for (int idomain = idom0; idomain < nbDomains; idomain++)
11261 itface = faceDomains.begin();
11262 for (; itface != faceDomains.end(); ++itface)
11264 const std::map<int, int>& domvol = itface->second;
11265 if (!domvol.count(idomain))
11267 DownIdType face = itface->first;
11268 //MESSAGE(" --- face " << face.cellId);
11269 std::set<int> oldNodes;
11271 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11272 std::set<int>::iterator itn = oldNodes.begin();
11273 for (; itn != oldNodes.end(); ++itn)
11276 if (nodeDomains[oldId].empty())
11278 nodeDomains[oldId][idomain] = oldId; // keep the old node in the first domain
11279 //MESSAGE("-+-+-b oldNode " << oldId << " domain " << idomain);
11281 std::map<int, int>::const_iterator itdom = domvol.begin();
11282 for (; itdom != domvol.end(); ++itdom)
11284 int idom = itdom->first;
11285 //MESSAGE(" domain " << idom);
11286 if (!nodeDomains[oldId].count(idom)) // --- node to clone
11288 if (nodeDomains[oldId].size() >= 2) // a multiple node
11290 vector<int> orderedDoms;
11291 //MESSAGE("multiple node " << oldId);
11292 if (mutipleNodes.count(oldId))
11293 orderedDoms = mutipleNodes[oldId];
11296 map<int,int>::iterator it = nodeDomains[oldId].begin();
11297 for (; it != nodeDomains[oldId].end(); ++it)
11298 orderedDoms.push_back(it->first);
11300 orderedDoms.push_back(idom); // TODO order ==> push_front or back
11301 //stringstream txt;
11302 //for (int i=0; i<orderedDoms.size(); i++)
11303 // txt << orderedDoms[i] << " ";
11304 //MESSAGE("orderedDoms " << txt.str());
11305 mutipleNodes[oldId] = orderedDoms;
11307 double *coords = grid->GetPoint(oldId);
11308 SMDS_MeshNode *newNode = meshDS->AddNode(coords[0], coords[1], coords[2]);
11309 copyPosition( meshDS->FindNodeVtk( oldId ), newNode );
11310 int newId = newNode->getVtkId();
11311 nodeDomains[oldId][idom] = newId; // cloned node for other domains
11312 //MESSAGE("-+-+-c oldNode " << oldId << " domain " << idomain << " newNode " << newId << " domain " << idom << " size=" <<nodeDomains[oldId].size());
11319 //MESSAGE(".. Creation of elements");
11320 for (int idomain = idom0; idomain < nbDomains; idomain++)
11322 itface = faceDomains.begin();
11323 for (; itface != faceDomains.end(); ++itface)
11325 std::map<int, int> domvol = itface->second;
11326 if (!domvol.count(idomain))
11328 DownIdType face = itface->first;
11329 //MESSAGE(" --- face " << face.cellId);
11330 std::set<int> oldNodes;
11332 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11333 int nbMultipleNodes = 0;
11334 std::set<int>::iterator itn = oldNodes.begin();
11335 for (; itn != oldNodes.end(); ++itn)
11338 if (mutipleNodes.count(oldId))
11341 if (nbMultipleNodes > 1) // check if an edge of the face is shared between 3 or more domains
11343 //MESSAGE("multiple Nodes detected on a shared face");
11344 int downId = itface->first.cellId;
11345 unsigned char cellType = itface->first.cellType;
11346 // --- shared edge or shared face ?
11347 if ((cellType == VTK_LINE) || (cellType == VTK_QUADRATIC_EDGE)) // shared edge (between two faces)
11350 int nbNodes = grid->getDownArray(cellType)->getNodes(downId, nodes);
11351 for (int i=0; i< nbNodes; i=i+nbNodes-1) // i=0 , i=nbNodes-1
11352 if (mutipleNodes.count(nodes[i]))
11353 if (!mutipleNodesToFace.count(nodes[i]))
11354 mutipleNodesToFace[nodes[i]] = mutipleNodes[nodes[i]];
11356 else // shared face (between two volumes)
11358 int nbEdges = grid->getDownArray(cellType)->getNumberOfDownCells(downId);
11359 const int* downEdgeIds = grid->getDownArray(cellType)->getDownCells(downId);
11360 const unsigned char* edgeType = grid->getDownArray(cellType)->getDownTypes(downId);
11361 for (int ie =0; ie < nbEdges; ie++)
11364 int nbNodes = grid->getDownArray(edgeType[ie])->getNodes(downEdgeIds[ie], nodes);
11365 if ( mutipleNodes.count(nodes[0]) && mutipleNodes.count( nodes[ nbNodes-1 ]))
11367 vector<int> vn0 = mutipleNodes[nodes[0]];
11368 vector<int> vn1 = mutipleNodes[nodes[nbNodes - 1]];
11370 for ( size_t i0 = 0; i0 < vn0.size(); i0++ )
11371 for ( size_t i1 = 0; i1 < vn1.size(); i1++ )
11372 if ( vn0[i0] == vn1[i1] )
11373 doms.push_back( vn0[ i0 ]);
11374 if ( doms.size() > 2 )
11376 //MESSAGE(" detect edgesMultiDomains " << nodes[0] << " " << nodes[nbNodes - 1]);
11377 double *coords = grid->GetPoint(nodes[0]);
11378 gp_Pnt p0(coords[0], coords[1], coords[2]);
11379 coords = grid->GetPoint(nodes[nbNodes - 1]);
11380 gp_Pnt p1(coords[0], coords[1], coords[2]);
11382 int vtkVolIds[1000]; // an edge can belong to a lot of volumes
11383 map<int, SMDS_VtkVolume*> domvol; // domain --> a volume with the edge
11384 map<int, double> angleDom; // oriented angles between planes defined by edge and volume centers
11385 int nbvol = grid->GetParentVolumes(vtkVolIds, downEdgeIds[ie], edgeType[ie]);
11386 for ( size_t id = 0; id < doms.size(); id++ )
11388 int idom = doms[id];
11389 const TIDSortedElemSet& domain = (idom == iRestDom) ? theRestDomElems : theElems[idom];
11390 for ( int ivol = 0; ivol < nbvol; ivol++ )
11392 int smdsId = meshDS->fromVtkToSmds(vtkVolIds[ivol]);
11393 SMDS_MeshElement* elem = (SMDS_MeshElement*)meshDS->FindElement(smdsId);
11394 if (domain.count(elem))
11396 SMDS_VtkVolume* svol = dynamic_cast<SMDS_VtkVolume*>(elem);
11397 domvol[idom] = svol;
11398 //MESSAGE(" domain " << idom << " volume " << elem->GetID());
11400 vtkIdType npts = 0;
11401 vtkIdType* pts = 0;
11402 grid->GetCellPoints(vtkVolIds[ivol], npts, pts);
11403 SMDS_VtkVolume::gravityCenter(grid, pts, npts, values);
11406 gref.SetXYZ(gp_XYZ(values[0], values[1], values[2]));
11407 angleDom[idom] = 0;
11411 gp_Pnt g(values[0], values[1], values[2]);
11412 angleDom[idom] = OrientedAngle(p0, p1, gref, g); // -pi<angle<+pi
11413 //MESSAGE(" angle=" << angleDom[idom]);
11419 map<double, int> sortedDom; // sort domains by angle
11420 for (map<int, double>::iterator ia = angleDom.begin(); ia != angleDom.end(); ++ia)
11421 sortedDom[ia->second] = ia->first;
11422 vector<int> vnodes;
11424 for (map<double, int>::iterator ib = sortedDom.begin(); ib != sortedDom.end(); ++ib)
11426 vdom.push_back(ib->second);
11427 //MESSAGE(" ordered domain " << ib->second << " angle " << ib->first);
11429 for (int ino = 0; ino < nbNodes; ino++)
11430 vnodes.push_back(nodes[ino]);
11431 edgesMultiDomains[vnodes] = vdom; // nodes vector --> ordered domains
11440 // --- iterate on shared faces (volumes to modify, face to extrude)
11441 // get node id's of the face (id SMDS = id VTK)
11442 // create flat element with old and new nodes if requested
11444 // --- new quad nodes on flat quad elements: oldId --> ((domain1 X domain2) --> newId)
11445 // (domain1 X domain2) = domain1 + MAXINT*domain2
11447 std::map<int, std::map<long,int> > nodeQuadDomains;
11448 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11450 //MESSAGE(".. Creation of elements: simple junction");
11451 if (createJointElems)
11454 string joints2DName = "joints2D";
11455 mapOfJunctionGroups[joints2DName] = this->myMesh->AddGroup(SMDSAbs_Face, joints2DName.c_str(), idg);
11456 SMESHDS_Group *joints2DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints2DName]->GetGroupDS());
11457 string joints3DName = "joints3D";
11458 mapOfJunctionGroups[joints3DName] = this->myMesh->AddGroup(SMDSAbs_Volume, joints3DName.c_str(), idg);
11459 SMESHDS_Group *joints3DGrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[joints3DName]->GetGroupDS());
11461 itface = faceDomains.begin();
11462 for (; itface != faceDomains.end(); ++itface)
11464 DownIdType face = itface->first;
11465 std::set<int> oldNodes;
11466 std::set<int>::iterator itn;
11468 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11470 std::map<int, int> domvol = itface->second;
11471 std::map<int, int>::iterator itdom = domvol.begin();
11472 int dom1 = itdom->first;
11473 int vtkVolId = itdom->second;
11475 int dom2 = itdom->first;
11476 SMDS_MeshCell *vol = grid->extrudeVolumeFromFace(vtkVolId, dom1, dom2, oldNodes, nodeDomains,
11478 stringstream grpname;
11481 grpname << dom1 << "_" << dom2;
11483 grpname << dom2 << "_" << dom1;
11484 string namegrp = grpname.str();
11485 if (!mapOfJunctionGroups.count(namegrp))
11486 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(vol->GetType(), namegrp.c_str(), idg);
11487 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11489 sgrp->Add(vol->GetID());
11490 if (vol->GetType() == SMDSAbs_Volume)
11491 joints3DGrp->Add(vol->GetID());
11492 else if (vol->GetType() == SMDSAbs_Face)
11493 joints2DGrp->Add(vol->GetID());
11497 // --- create volumes on multiple domain intersection if requested
11498 // iterate on mutipleNodesToFace
11499 // iterate on edgesMultiDomains
11501 //MESSAGE(".. Creation of elements: multiple junction");
11502 if (createJointElems)
11504 // --- iterate on mutipleNodesToFace
11506 std::map<int, std::vector<int> >::iterator itn = mutipleNodesToFace.begin();
11507 for (; itn != mutipleNodesToFace.end(); ++itn)
11509 int node = itn->first;
11510 vector<int> orderDom = itn->second;
11511 vector<vtkIdType> orderedNodes;
11512 for ( size_t idom = 0; idom < orderDom.size(); idom++ )
11513 orderedNodes.push_back( nodeDomains[ node ][ orderDom[ idom ]]);
11514 SMDS_MeshFace* face = this->GetMeshDS()->AddFaceFromVtkIds(orderedNodes);
11516 stringstream grpname;
11518 grpname << 0 << "_" << 0;
11520 string namegrp = grpname.str();
11521 if (!mapOfJunctionGroups.count(namegrp))
11522 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Face, namegrp.c_str(), idg);
11523 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11525 sgrp->Add(face->GetID());
11528 // --- iterate on edgesMultiDomains
11530 std::map<std::vector<int>, std::vector<int> >::iterator ite = edgesMultiDomains.begin();
11531 for (; ite != edgesMultiDomains.end(); ++ite)
11533 vector<int> nodes = ite->first;
11534 vector<int> orderDom = ite->second;
11535 vector<vtkIdType> orderedNodes;
11536 if (nodes.size() == 2)
11538 //MESSAGE(" use edgesMultiDomains " << nodes[0] << " " << nodes[1]);
11539 for ( size_t ino = 0; ino < nodes.size(); ino++ )
11540 if ( orderDom.size() == 3 )
11541 for ( size_t idom = 0; idom < orderDom.size(); idom++ )
11542 orderedNodes.push_back( nodeDomains[ nodes[ ino ]][ orderDom[ idom ]]);
11544 for (int idom = orderDom.size()-1; idom >=0; idom--)
11545 orderedNodes.push_back( nodeDomains[ nodes[ ino ]][ orderDom[ idom ]]);
11546 SMDS_MeshVolume* vol = this->GetMeshDS()->AddVolumeFromVtkIds(orderedNodes);
11549 string namegrp = "jointsMultiples";
11550 if (!mapOfJunctionGroups.count(namegrp))
11551 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11552 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11554 sgrp->Add(vol->GetID());
11558 //INFOS("Quadratic multiple joints not implemented");
11559 // TODO quadratic nodes
11564 // --- list the explicit faces and edges of the mesh that need to be modified,
11565 // i.e. faces and edges built with one or more duplicated nodes.
11566 // associate these faces or edges to their corresponding domain.
11567 // only the first domain found is kept when a face or edge is shared
11569 std::map<DownIdType, std::map<int,int>, DownIdCompare> faceOrEdgeDom; // cellToModify --> (id domain --> id cell)
11570 std::map<int,int> feDom; // vtk id of cell to modify --> id domain
11571 faceOrEdgeDom.clear();
11574 //MESSAGE(".. Modification of elements");
11575 for (int idomain = idom0; idomain < nbDomains; idomain++)
11577 std::map<int, std::map<int, int> >::const_iterator itnod = nodeDomains.begin();
11578 for (; itnod != nodeDomains.end(); ++itnod)
11580 int oldId = itnod->first;
11581 //MESSAGE(" node " << oldId);
11582 vtkCellLinks::Link l = grid->GetCellLinks()->GetLink(oldId);
11583 for (int i = 0; i < l.ncells; i++)
11585 int vtkId = l.cells[i];
11586 int vtkType = grid->GetCellType(vtkId);
11587 int downId = grid->CellIdToDownId(vtkId);
11589 continue; // new cells: not to be modified
11590 DownIdType aCell(downId, vtkType);
11591 int volParents[1000];
11592 int nbvol = grid->GetParentVolumes(volParents, vtkId);
11593 for (int j = 0; j < nbvol; j++)
11594 if (celldom.count(volParents[j]) && (celldom[volParents[j]] == idomain))
11595 if (!feDom.count(vtkId))
11597 feDom[vtkId] = idomain;
11598 faceOrEdgeDom[aCell] = emptyMap;
11599 faceOrEdgeDom[aCell][idomain] = vtkId; // affect face or edge to the first domain only
11600 //MESSAGE("affect cell " << this->GetMeshDS()->fromVtkToSmds(vtkId) << " domain " << idomain
11601 // << " type " << vtkType << " downId " << downId);
11607 // --- iterate on shared faces (volumes to modify, face to extrude)
11608 // get node id's of the face
11609 // replace old nodes by new nodes in volumes, and update inverse connectivity
11611 std::map<DownIdType, std::map<int,int>, DownIdCompare>* maps[3] = {&faceDomains, &cellDomains, &faceOrEdgeDom};
11612 for (int m=0; m<3; m++)
11614 std::map<DownIdType, std::map<int,int>, DownIdCompare>* amap = maps[m];
11615 itface = (*amap).begin();
11616 for (; itface != (*amap).end(); ++itface)
11618 DownIdType face = itface->first;
11619 std::set<int> oldNodes;
11620 std::set<int>::iterator itn;
11622 grid->GetNodeIds(oldNodes, face.cellId, face.cellType);
11623 //MESSAGE("examine cell, downId " << face.cellId << " type " << int(face.cellType));
11624 std::map<int, int> localClonedNodeIds;
11626 std::map<int, int> domvol = itface->second;
11627 std::map<int, int>::iterator itdom = domvol.begin();
11628 for (; itdom != domvol.end(); ++itdom)
11630 int idom = itdom->first;
11631 int vtkVolId = itdom->second;
11632 //MESSAGE("modify nodes of cell " << this->GetMeshDS()->fromVtkToSmds(vtkVolId) << " domain " << idom);
11633 localClonedNodeIds.clear();
11634 for (itn = oldNodes.begin(); itn != oldNodes.end(); ++itn)
11637 if (nodeDomains[oldId].count(idom))
11639 localClonedNodeIds[oldId] = nodeDomains[oldId][idom];
11640 //MESSAGE(" node " << oldId << " --> " << localClonedNodeIds[oldId]);
11643 meshDS->ModifyCellNodes(vtkVolId, localClonedNodeIds);
11648 // Remove empty groups (issue 0022812)
11649 std::map<std::string, SMESH_Group*>::iterator name_group = mapOfJunctionGroups.begin();
11650 for ( ; name_group != mapOfJunctionGroups.end(); ++name_group )
11652 if ( name_group->second && name_group->second->GetGroupDS()->IsEmpty() )
11653 myMesh->RemoveGroup( name_group->second->GetGroupDS()->GetID() );
11656 meshDS->CleanDownWardConnectivity(); // Mesh has been modified, downward connectivity is no more usable, free memory
11657 grid->DeleteLinks();
11665 * \brief Double nodes on some external faces and create flat elements.
11666 * Flat elements are mainly used by some types of mechanic calculations.
11668 * Each group of the list must be constituted of faces.
11669 * Triangles are transformed in prisms, and quadrangles in hexahedrons.
11670 * @param theElems - list of groups of faces, where a group of faces is a set of
11671 * SMDS_MeshElements sorted by Id.
11672 * @return TRUE if operation has been completed successfully, FALSE otherwise
11674 bool SMESH_MeshEditor::CreateFlatElementsOnFacesGroups(const std::vector<TIDSortedElemSet>& theElems)
11676 // MESSAGE("-------------------------------------------------");
11677 // MESSAGE("SMESH_MeshEditor::CreateFlatElementsOnFacesGroups");
11678 // MESSAGE("-------------------------------------------------");
11680 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11682 // --- For each group of faces
11683 // duplicate the nodes, create a flat element based on the face
11684 // replace the nodes of the faces by their clones
11686 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> clonedNodes;
11687 std::map<const SMDS_MeshNode*, const SMDS_MeshNode*> intermediateNodes;
11688 clonedNodes.clear();
11689 intermediateNodes.clear();
11690 std::map<std::string, SMESH_Group*> mapOfJunctionGroups;
11691 mapOfJunctionGroups.clear();
11693 for ( size_t idom = 0; idom < theElems.size(); idom++ )
11695 const TIDSortedElemSet& domain = theElems[idom];
11696 TIDSortedElemSet::const_iterator elemItr = domain.begin();
11697 for ( ; elemItr != domain.end(); ++elemItr )
11699 SMDS_MeshElement* anElem = (SMDS_MeshElement*) *elemItr;
11700 SMDS_MeshFace* aFace = dynamic_cast<SMDS_MeshFace*> (anElem);
11703 // MESSAGE("aFace=" << aFace->GetID());
11704 bool isQuad = aFace->IsQuadratic();
11705 vector<const SMDS_MeshNode*> ln0, ln1, ln2, ln3, ln4;
11707 // --- clone the nodes, create intermediate nodes for non medium nodes of a quad face
11709 SMDS_ElemIteratorPtr nodeIt = aFace->nodesIterator();
11710 while (nodeIt->more())
11712 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*> (nodeIt->next());
11713 bool isMedium = isQuad && (aFace->IsMediumNode(node));
11715 ln2.push_back(node);
11717 ln0.push_back(node);
11719 const SMDS_MeshNode* clone = 0;
11720 if (!clonedNodes.count(node))
11722 clone = meshDS->AddNode(node->X(), node->Y(), node->Z());
11723 copyPosition( node, clone );
11724 clonedNodes[node] = clone;
11727 clone = clonedNodes[node];
11730 ln3.push_back(clone);
11732 ln1.push_back(clone);
11734 const SMDS_MeshNode* inter = 0;
11735 if (isQuad && (!isMedium))
11737 if (!intermediateNodes.count(node))
11739 inter = meshDS->AddNode(node->X(), node->Y(), node->Z());
11740 copyPosition( node, inter );
11741 intermediateNodes[node] = inter;
11744 inter = intermediateNodes[node];
11745 ln4.push_back(inter);
11749 // --- extrude the face
11751 vector<const SMDS_MeshNode*> ln;
11752 SMDS_MeshVolume* vol = 0;
11753 vtkIdType aType = aFace->GetVtkType();
11757 vol = meshDS->AddVolume(ln0[2], ln0[1], ln0[0], ln1[2], ln1[1], ln1[0]);
11758 // MESSAGE("vol prism " << vol->GetID());
11759 ln.push_back(ln1[0]);
11760 ln.push_back(ln1[1]);
11761 ln.push_back(ln1[2]);
11764 vol = meshDS->AddVolume(ln0[3], ln0[2], ln0[1], ln0[0], ln1[3], ln1[2], ln1[1], ln1[0]);
11765 // MESSAGE("vol hexa " << vol->GetID());
11766 ln.push_back(ln1[0]);
11767 ln.push_back(ln1[1]);
11768 ln.push_back(ln1[2]);
11769 ln.push_back(ln1[3]);
11771 case VTK_QUADRATIC_TRIANGLE:
11772 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln0[0], ln0[1], ln0[2], ln3[0], ln3[1], ln3[2],
11773 ln2[0], ln2[1], ln2[2], ln4[0], ln4[1], ln4[2]);
11774 // MESSAGE("vol quad prism " << vol->GetID());
11775 ln.push_back(ln1[0]);
11776 ln.push_back(ln1[1]);
11777 ln.push_back(ln1[2]);
11778 ln.push_back(ln3[0]);
11779 ln.push_back(ln3[1]);
11780 ln.push_back(ln3[2]);
11782 case VTK_QUADRATIC_QUAD:
11783 // vol = meshDS->AddVolume(ln0[0], ln0[1], ln0[2], ln0[3], ln1[0], ln1[1], ln1[2], ln1[3],
11784 // ln2[0], ln2[1], ln2[2], ln2[3], ln3[0], ln3[1], ln3[2], ln3[3],
11785 // ln4[0], ln4[1], ln4[2], ln4[3]);
11786 vol = meshDS->AddVolume(ln1[0], ln1[1], ln1[2], ln1[3], ln0[0], ln0[1], ln0[2], ln0[3],
11787 ln3[0], ln3[1], ln3[2], ln3[3], ln2[0], ln2[1], ln2[2], ln2[3],
11788 ln4[0], ln4[1], ln4[2], ln4[3]);
11789 // MESSAGE("vol quad hexa " << vol->GetID());
11790 ln.push_back(ln1[0]);
11791 ln.push_back(ln1[1]);
11792 ln.push_back(ln1[2]);
11793 ln.push_back(ln1[3]);
11794 ln.push_back(ln3[0]);
11795 ln.push_back(ln3[1]);
11796 ln.push_back(ln3[2]);
11797 ln.push_back(ln3[3]);
11807 stringstream grpname;
11811 string namegrp = grpname.str();
11812 if (!mapOfJunctionGroups.count(namegrp))
11813 mapOfJunctionGroups[namegrp] = this->myMesh->AddGroup(SMDSAbs_Volume, namegrp.c_str(), idg);
11814 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(mapOfJunctionGroups[namegrp]->GetGroupDS());
11816 sgrp->Add(vol->GetID());
11819 // --- modify the face
11821 aFace->ChangeNodes(&ln[0], ln.size());
11828 * \brief identify all the elements around a geom shape, get the faces delimiting the hole
11829 * Build groups of volume to remove, groups of faces to replace on the skin of the object,
11830 * groups of faces to remove inside the object, (idem edges).
11831 * Build ordered list of nodes at the border of each group of faces to replace (to be used to build a geom subshape)
11833 void SMESH_MeshEditor::CreateHoleSkin(double radius,
11834 const TopoDS_Shape& theShape,
11835 SMESH_NodeSearcher* theNodeSearcher,
11836 const char* groupName,
11837 std::vector<double>& nodesCoords,
11838 std::vector<std::vector<int> >& listOfListOfNodes)
11840 // MESSAGE("--------------------------------");
11841 // MESSAGE("SMESH_MeshEditor::CreateHoleSkin");
11842 // MESSAGE("--------------------------------");
11844 // --- zone of volumes to remove is given :
11845 // 1 either by a geom shape (one or more vertices) and a radius,
11846 // 2 either by a group of nodes (representative of the shape)to use with the radius,
11847 // 3 either by a group of nodes where all the elements build on one of this nodes are to remove,
11848 // In the case 2, the group of nodes is an external group of nodes from another mesh,
11849 // In the case 3, the group of nodes is an internal group of the mesh (obtained for instance by a filter),
11850 // defined by it's name.
11852 SMESHDS_GroupBase* groupDS = 0;
11853 SMESH_Mesh::GroupIteratorPtr groupIt = this->myMesh->GetGroups();
11854 while ( groupIt->more() )
11857 SMESH_Group * group = groupIt->next();
11858 if ( !group ) continue;
11859 groupDS = group->GetGroupDS();
11860 if ( !groupDS || groupDS->IsEmpty() ) continue;
11861 std::string grpName = group->GetName();
11862 //MESSAGE("grpName=" << grpName);
11863 if (grpName == groupName)
11869 bool isNodeGroup = false;
11870 bool isNodeCoords = false;
11873 if (groupDS->GetType() != SMDSAbs_Node)
11875 isNodeGroup = true; // a group of nodes exists and it is in this mesh
11878 if (nodesCoords.size() > 0)
11879 isNodeCoords = true; // a list o nodes given by their coordinates
11880 //MESSAGE("---" << isNodeGroup << " " << isNodeCoords);
11882 // --- define groups to build
11884 int idg; // --- group of SMDS volumes
11885 string grpvName = groupName;
11886 grpvName += "_vol";
11887 SMESH_Group *grp = this->myMesh->AddGroup(SMDSAbs_Volume, grpvName.c_str(), idg);
11890 MESSAGE("group not created " << grpvName);
11893 SMESHDS_Group *sgrp = dynamic_cast<SMESHDS_Group*>(grp->GetGroupDS());
11895 int idgs; // --- group of SMDS faces on the skin
11896 string grpsName = groupName;
11897 grpsName += "_skin";
11898 SMESH_Group *grps = this->myMesh->AddGroup(SMDSAbs_Face, grpsName.c_str(), idgs);
11901 MESSAGE("group not created " << grpsName);
11904 SMESHDS_Group *sgrps = dynamic_cast<SMESHDS_Group*>(grps->GetGroupDS());
11906 int idgi; // --- group of SMDS faces internal (several shapes)
11907 string grpiName = groupName;
11908 grpiName += "_internalFaces";
11909 SMESH_Group *grpi = this->myMesh->AddGroup(SMDSAbs_Face, grpiName.c_str(), idgi);
11912 MESSAGE("group not created " << grpiName);
11915 SMESHDS_Group *sgrpi = dynamic_cast<SMESHDS_Group*>(grpi->GetGroupDS());
11917 int idgei; // --- group of SMDS faces internal (several shapes)
11918 string grpeiName = groupName;
11919 grpeiName += "_internalEdges";
11920 SMESH_Group *grpei = this->myMesh->AddGroup(SMDSAbs_Edge, grpeiName.c_str(), idgei);
11923 MESSAGE("group not created " << grpeiName);
11926 SMESHDS_Group *sgrpei = dynamic_cast<SMESHDS_Group*>(grpei->GetGroupDS());
11928 // --- build downward connectivity
11930 SMESHDS_Mesh *meshDS = this->myMesh->GetMeshDS();
11931 meshDS->BuildDownWardConnectivity(true);
11932 SMDS_UnstructuredGrid* grid = meshDS->getGrid();
11934 // --- set of volumes detected inside
11936 std::set<int> setOfInsideVol;
11937 std::set<int> setOfVolToCheck;
11939 std::vector<gp_Pnt> gpnts;
11942 if (isNodeGroup) // --- a group of nodes is provided : find all the volumes using one or more of this nodes
11944 //MESSAGE("group of nodes provided");
11945 SMDS_ElemIteratorPtr elemIt = groupDS->GetElements();
11946 while ( elemIt->more() )
11948 const SMDS_MeshElement* elem = elemIt->next();
11951 const SMDS_MeshNode* node = dynamic_cast<const SMDS_MeshNode*>(elem);
11954 SMDS_MeshElement* vol = 0;
11955 SMDS_ElemIteratorPtr volItr = node->GetInverseElementIterator(SMDSAbs_Volume);
11956 while (volItr->more())
11958 vol = (SMDS_MeshElement*)volItr->next();
11959 setOfInsideVol.insert(vol->getVtkId());
11960 sgrp->Add(vol->GetID());
11964 else if (isNodeCoords)
11966 //MESSAGE("list of nodes coordinates provided");
11969 while ( i < nodesCoords.size()-2 )
11971 double x = nodesCoords[i++];
11972 double y = nodesCoords[i++];
11973 double z = nodesCoords[i++];
11974 gp_Pnt p = gp_Pnt(x, y ,z);
11975 gpnts.push_back(p);
11976 //MESSAGE("TopoDS_Vertex " << k << " " << p.X() << " " << p.Y() << " " << p.Z());
11980 else // --- no group, no coordinates : use the vertices of the geom shape provided, and radius
11982 //MESSAGE("no group of nodes provided, using vertices from geom shape, and radius");
11983 TopTools_IndexedMapOfShape vertexMap;
11984 TopExp::MapShapes( theShape, TopAbs_VERTEX, vertexMap );
11985 gp_Pnt p = gp_Pnt(0,0,0);
11986 if (vertexMap.Extent() < 1)
11989 for ( int i = 1; i <= vertexMap.Extent(); ++i )
11991 const TopoDS_Vertex& vertex = TopoDS::Vertex( vertexMap( i ));
11992 p = BRep_Tool::Pnt(vertex);
11993 gpnts.push_back(p);
11994 //MESSAGE("TopoDS_Vertex " << i << " " << p.X() << " " << p.Y() << " " << p.Z());
11998 if (gpnts.size() > 0)
12000 const SMDS_MeshNode* startNode = theNodeSearcher->FindClosestTo(gpnts[0]);
12001 //MESSAGE("startNode->nodeId " << nodeId);
12003 double radius2 = radius*radius;
12004 //MESSAGE("radius2 " << radius2);
12006 // --- volumes on start node
12008 setOfVolToCheck.clear();
12009 SMDS_MeshElement* startVol = 0;
12010 SMDS_ElemIteratorPtr volItr = startNode->GetInverseElementIterator(SMDSAbs_Volume);
12011 while (volItr->more())
12013 startVol = (SMDS_MeshElement*)volItr->next();
12014 setOfVolToCheck.insert(startVol->getVtkId());
12016 if (setOfVolToCheck.empty())
12018 MESSAGE("No volumes found");
12022 // --- starting with central volumes then their neighbors, check if they are inside
12023 // or outside the domain, until no more new neighbor volume is inside.
12024 // Fill the group of inside volumes
12026 std::map<int, double> mapOfNodeDistance2;
12027 mapOfNodeDistance2.clear();
12028 std::set<int> setOfOutsideVol;
12029 while (!setOfVolToCheck.empty())
12031 std::set<int>::iterator it = setOfVolToCheck.begin();
12033 //MESSAGE("volume to check, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12034 bool volInside = false;
12035 vtkIdType npts = 0;
12036 vtkIdType* pts = 0;
12037 grid->GetCellPoints(vtkId, npts, pts);
12038 for (int i=0; i<npts; i++)
12040 double distance2 = 0;
12041 if (mapOfNodeDistance2.count(pts[i]))
12043 distance2 = mapOfNodeDistance2[pts[i]];
12044 //MESSAGE("point " << pts[i] << " distance2 " << distance2);
12048 double *coords = grid->GetPoint(pts[i]);
12049 gp_Pnt aPoint = gp_Pnt(coords[0], coords[1], coords[2]);
12051 for ( size_t j = 0; j < gpnts.size(); j++ )
12053 double d2 = aPoint.SquareDistance( gpnts[ j ]);
12054 if (d2 < distance2)
12057 if (distance2 < radius2)
12061 mapOfNodeDistance2[pts[i]] = distance2;
12062 //MESSAGE(" point " << pts[i] << " distance2 " << distance2 << " coords " << coords[0] << " " << coords[1] << " " << coords[2]);
12064 if (distance2 < radius2)
12066 volInside = true; // one or more nodes inside the domain
12067 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12073 setOfInsideVol.insert(vtkId);
12074 //MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12075 int neighborsVtkIds[NBMAXNEIGHBORS];
12076 int downIds[NBMAXNEIGHBORS];
12077 unsigned char downTypes[NBMAXNEIGHBORS];
12078 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12079 for (int n = 0; n < nbNeighbors; n++)
12080 if (!setOfInsideVol.count(neighborsVtkIds[n]) ||setOfOutsideVol.count(neighborsVtkIds[n]))
12081 setOfVolToCheck.insert(neighborsVtkIds[n]);
12085 setOfOutsideVol.insert(vtkId);
12086 //MESSAGE(" volume outside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12088 setOfVolToCheck.erase(vtkId);
12092 // --- for outside hexahedrons, check if they have more than one neighbor volume inside
12093 // If yes, add the volume to the inside set
12095 bool addedInside = true;
12096 std::set<int> setOfVolToReCheck;
12097 while (addedInside)
12099 //MESSAGE(" --------------------------- re check");
12100 addedInside = false;
12101 std::set<int>::iterator itv = setOfInsideVol.begin();
12102 for (; itv != setOfInsideVol.end(); ++itv)
12105 int neighborsVtkIds[NBMAXNEIGHBORS];
12106 int downIds[NBMAXNEIGHBORS];
12107 unsigned char downTypes[NBMAXNEIGHBORS];
12108 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12109 for (int n = 0; n < nbNeighbors; n++)
12110 if (!setOfInsideVol.count(neighborsVtkIds[n]))
12111 setOfVolToReCheck.insert(neighborsVtkIds[n]);
12113 setOfVolToCheck = setOfVolToReCheck;
12114 setOfVolToReCheck.clear();
12115 while (!setOfVolToCheck.empty())
12117 std::set<int>::iterator it = setOfVolToCheck.begin();
12119 if (grid->GetCellType(vtkId) == VTK_HEXAHEDRON)
12121 //MESSAGE("volume to recheck, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12122 int countInside = 0;
12123 int neighborsVtkIds[NBMAXNEIGHBORS];
12124 int downIds[NBMAXNEIGHBORS];
12125 unsigned char downTypes[NBMAXNEIGHBORS];
12126 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12127 for (int n = 0; n < nbNeighbors; n++)
12128 if (setOfInsideVol.count(neighborsVtkIds[n]))
12130 //MESSAGE("countInside " << countInside);
12131 if (countInside > 1)
12133 //MESSAGE(" volume inside, vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12134 setOfInsideVol.insert(vtkId);
12135 sgrp->Add(meshDS->fromVtkToSmds(vtkId));
12136 addedInside = true;
12139 setOfVolToReCheck.insert(vtkId);
12141 setOfVolToCheck.erase(vtkId);
12145 // --- map of Downward faces at the boundary, inside the global volume
12146 // map of Downward faces on the skin of the global volume (equivalent to SMDS faces on the skin)
12147 // fill group of SMDS faces inside the volume (when several volume shapes)
12148 // fill group of SMDS faces on the skin of the global volume (if skin)
12150 std::map<DownIdType, int, DownIdCompare> boundaryFaces; // boundary faces inside the volume --> corresponding cell
12151 std::map<DownIdType, int, DownIdCompare> skinFaces; // faces on the skin of the global volume --> corresponding cell
12152 std::set<int>::iterator it = setOfInsideVol.begin();
12153 for (; it != setOfInsideVol.end(); ++it)
12156 //MESSAGE(" vtkId " << vtkId << " smdsId " << meshDS->fromVtkToSmds(vtkId));
12157 int neighborsVtkIds[NBMAXNEIGHBORS];
12158 int downIds[NBMAXNEIGHBORS];
12159 unsigned char downTypes[NBMAXNEIGHBORS];
12160 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId, true);
12161 for (int n = 0; n < nbNeighbors; n++)
12163 int neighborDim = SMDS_Downward::getCellDimension(grid->GetCellType(neighborsVtkIds[n]));
12164 if (neighborDim == 3)
12166 if (! setOfInsideVol.count(neighborsVtkIds[n])) // neighbor volume is not inside : face is boundary
12168 DownIdType face(downIds[n], downTypes[n]);
12169 boundaryFaces[face] = vtkId;
12171 // if the face between to volumes is in the mesh, get it (internal face between shapes)
12172 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12173 if (vtkFaceId >= 0)
12175 sgrpi->Add(meshDS->fromVtkToSmds(vtkFaceId));
12176 // find also the smds edges on this face
12177 int nbEdges = grid->getDownArray(downTypes[n])->getNumberOfDownCells(downIds[n]);
12178 const int* dEdges = grid->getDownArray(downTypes[n])->getDownCells(downIds[n]);
12179 const unsigned char* dTypes = grid->getDownArray(downTypes[n])->getDownTypes(downIds[n]);
12180 for (int i = 0; i < nbEdges; i++)
12182 int vtkEdgeId = grid->getDownArray(dTypes[i])->getVtkCellId(dEdges[i]);
12183 if (vtkEdgeId >= 0)
12184 sgrpei->Add(meshDS->fromVtkToSmds(vtkEdgeId));
12188 else if (neighborDim == 2) // skin of the volume
12190 DownIdType face(downIds[n], downTypes[n]);
12191 skinFaces[face] = vtkId;
12192 int vtkFaceId = grid->getDownArray(downTypes[n])->getVtkCellId(downIds[n]);
12193 if (vtkFaceId >= 0)
12194 sgrps->Add(meshDS->fromVtkToSmds(vtkFaceId));
12199 // --- identify the edges constituting the wire of each subshape on the skin
12200 // define polylines with the nodes of edges, equivalent to wires
12201 // project polylines on subshapes, and partition, to get geom faces
12203 std::map<int, std::set<int> > shapeIdToVtkIdSet; // shapeId --> set of vtkId on skin
12204 std::set<int> emptySet;
12206 std::set<int> shapeIds;
12208 SMDS_ElemIteratorPtr itelem = sgrps->GetElements();
12209 while (itelem->more())
12211 const SMDS_MeshElement *elem = itelem->next();
12212 int shapeId = elem->getshapeId();
12213 int vtkId = elem->getVtkId();
12214 if (!shapeIdToVtkIdSet.count(shapeId))
12216 shapeIdToVtkIdSet[shapeId] = emptySet;
12217 shapeIds.insert(shapeId);
12219 shapeIdToVtkIdSet[shapeId].insert(vtkId);
12222 std::map<int, std::set<DownIdType, DownIdCompare> > shapeIdToEdges; // shapeId --> set of downward edges
12223 std::set<DownIdType, DownIdCompare> emptyEdges;
12224 emptyEdges.clear();
12226 std::map<int, std::set<int> >::iterator itShape = shapeIdToVtkIdSet.begin();
12227 for (; itShape != shapeIdToVtkIdSet.end(); ++itShape)
12229 int shapeId = itShape->first;
12230 //MESSAGE(" --- Shape ID --- "<< shapeId);
12231 shapeIdToEdges[shapeId] = emptyEdges;
12233 std::vector<int> nodesEdges;
12235 std::set<int>::iterator its = itShape->second.begin();
12236 for (; its != itShape->second.end(); ++its)
12239 //MESSAGE(" " << vtkId);
12240 int neighborsVtkIds[NBMAXNEIGHBORS];
12241 int downIds[NBMAXNEIGHBORS];
12242 unsigned char downTypes[NBMAXNEIGHBORS];
12243 int nbNeighbors = grid->GetNeighbors(neighborsVtkIds, downIds, downTypes, vtkId);
12244 for (int n = 0; n < nbNeighbors; n++)
12246 if (neighborsVtkIds[n]<0) // only smds faces are considered as neighbors here
12248 int smdsId = meshDS->fromVtkToSmds(neighborsVtkIds[n]);
12249 const SMDS_MeshElement* elem = meshDS->FindElement(smdsId);
12250 if ( shapeIds.count(elem->getshapeId()) && !sgrps->Contains(elem)) // edge : neighbor in the set of shape, not in the group
12252 DownIdType edge(downIds[n], downTypes[n]);
12253 if (!shapeIdToEdges[shapeId].count(edge))
12255 shapeIdToEdges[shapeId].insert(edge);
12257 int nbNodes = grid->getDownArray(downTypes[n])->getNodes(downIds[n],vtkNodeId);
12258 nodesEdges.push_back(vtkNodeId[0]);
12259 nodesEdges.push_back(vtkNodeId[nbNodes-1]);
12260 //MESSAGE(" --- nodes " << vtkNodeId[0]+1 << " " << vtkNodeId[nbNodes-1]+1);
12266 std::list<int> order;
12268 if (nodesEdges.size() > 0)
12270 order.push_back(nodesEdges[0]); //MESSAGE(" --- back " << order.back()+1); // SMDS id = VTK id + 1;
12271 nodesEdges[0] = -1;
12272 order.push_back(nodesEdges[1]); //MESSAGE(" --- back " << order.back()+1);
12273 nodesEdges[1] = -1; // do not reuse this edge
12277 int nodeTofind = order.back(); // try first to push back
12279 for ( i = 0; i < (int)nodesEdges.size(); i++ )
12280 if (nodesEdges[i] == nodeTofind)
12282 if ( i == (int) nodesEdges.size() )
12283 found = false; // no follower found on back
12286 if (i%2) // odd ==> use the previous one
12287 if (nodesEdges[i-1] < 0)
12291 order.push_back(nodesEdges[i-1]); //MESSAGE(" --- back " << order.back()+1);
12292 nodesEdges[i-1] = -1;
12294 else // even ==> use the next one
12295 if (nodesEdges[i+1] < 0)
12299 order.push_back(nodesEdges[i+1]); //MESSAGE(" --- back " << order.back()+1);
12300 nodesEdges[i+1] = -1;
12305 // try to push front
12307 nodeTofind = order.front(); // try to push front
12308 for ( i = 0; i < (int)nodesEdges.size(); i++ )
12309 if ( nodesEdges[i] == nodeTofind )
12311 if ( i == (int)nodesEdges.size() )
12313 found = false; // no predecessor found on front
12316 if (i%2) // odd ==> use the previous one
12317 if (nodesEdges[i-1] < 0)
12321 order.push_front(nodesEdges[i-1]); //MESSAGE(" --- front " << order.front()+1);
12322 nodesEdges[i-1] = -1;
12324 else // even ==> use the next one
12325 if (nodesEdges[i+1] < 0)
12329 order.push_front(nodesEdges[i+1]); //MESSAGE(" --- front " << order.front()+1);
12330 nodesEdges[i+1] = -1;
12336 std::vector<int> nodes;
12337 nodes.push_back(shapeId);
12338 std::list<int>::iterator itl = order.begin();
12339 for (; itl != order.end(); itl++)
12341 nodes.push_back((*itl) + 1); // SMDS id = VTK id + 1;
12342 //MESSAGE(" ordered node " << nodes[nodes.size()-1]);
12344 listOfListOfNodes.push_back(nodes);
12347 // partition geom faces with blocFissure
12348 // mesh blocFissure and geom faces of the skin (external wires given, triangle algo to choose)
12349 // mesh volume around blocFissure (skin triangles and quadrangle given, tetra algo to choose)
12355 //================================================================================
12357 * \brief Generates skin mesh (containing 2D cells) from 3D mesh
12358 * The created 2D mesh elements based on nodes of free faces of boundary volumes
12359 * \return TRUE if operation has been completed successfully, FALSE otherwise
12361 //================================================================================
12363 bool SMESH_MeshEditor::Make2DMeshFrom3D()
12365 // iterates on volume elements and detect all free faces on them
12366 SMESHDS_Mesh* aMesh = GetMeshDS();
12370 ElemFeatures faceType( SMDSAbs_Face );
12371 int nbFree = 0, nbExisted = 0, nbCreated = 0;
12372 SMDS_VolumeIteratorPtr vIt = aMesh->volumesIterator();
12375 const SMDS_MeshVolume* volume = vIt->next();
12376 SMDS_VolumeTool vTool( volume, /*ignoreCentralNodes=*/false );
12377 vTool.SetExternalNormal();
12378 const int iQuad = volume->IsQuadratic();
12379 faceType.SetQuad( iQuad );
12380 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12382 if (!vTool.IsFreeFace(iface))
12385 vector<const SMDS_MeshNode *> nodes;
12386 int nbFaceNodes = vTool.NbFaceNodes(iface);
12387 const SMDS_MeshNode** faceNodes = vTool.GetFaceNodes(iface);
12389 for ( ; inode < nbFaceNodes; inode += iQuad+1)
12390 nodes.push_back(faceNodes[inode]);
12392 if (iQuad) // add medium nodes
12394 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12395 nodes.push_back(faceNodes[inode]);
12396 if ( nbFaceNodes == 9 ) // bi-quadratic quad
12397 nodes.push_back(faceNodes[8]);
12399 // add new face based on volume nodes
12400 if (aMesh->FindElement( nodes, SMDSAbs_Face, /*noMedium=*/false) )
12402 nbExisted++; // face already exsist
12406 AddElement( nodes, faceType.SetPoly( nbFaceNodes/(iQuad+1) > 4 ));
12411 return ( nbFree == ( nbExisted + nbCreated ));
12416 inline const SMDS_MeshNode* getNodeWithSameID(SMESHDS_Mesh* mesh, const SMDS_MeshNode* node)
12418 if ( const SMDS_MeshNode* n = mesh->FindNode( node->GetID() ))
12420 return mesh->AddNodeWithID( node->X(),node->Y(),node->Z(), node->GetID() );
12423 //================================================================================
12425 * \brief Creates missing boundary elements
12426 * \param elements - elements whose boundary is to be checked
12427 * \param dimension - defines type of boundary elements to create
12428 * \param group - a group to store created boundary elements in
12429 * \param targetMesh - a mesh to store created boundary elements in
12430 * \param toCopyElements - if true, the checked elements will be copied into the targetMesh
12431 * \param toCopyExistingBoundary - if true, not only new but also pre-existing
12432 * boundary elements will be copied into the targetMesh
12433 * \param toAddExistingBondary - if true, not only new but also pre-existing
12434 * boundary elements will be added into the new group
12435 * \param aroundElements - if true, elements will be created on boundary of given
12436 * elements else, on boundary of the whole mesh.
12437 * \return nb of added boundary elements
12439 //================================================================================
12441 int SMESH_MeshEditor::MakeBoundaryMesh(const TIDSortedElemSet& elements,
12442 Bnd_Dimension dimension,
12443 SMESH_Group* group/*=0*/,
12444 SMESH_Mesh* targetMesh/*=0*/,
12445 bool toCopyElements/*=false*/,
12446 bool toCopyExistingBoundary/*=false*/,
12447 bool toAddExistingBondary/*= false*/,
12448 bool aroundElements/*= false*/)
12450 SMDSAbs_ElementType missType = (dimension == BND_2DFROM3D) ? SMDSAbs_Face : SMDSAbs_Edge;
12451 SMDSAbs_ElementType elemType = (dimension == BND_1DFROM2D) ? SMDSAbs_Face : SMDSAbs_Volume;
12452 // hope that all elements are of the same type, do not check them all
12453 if ( !elements.empty() && (*elements.begin())->GetType() != elemType )
12454 throw SALOME_Exception(LOCALIZED("wrong element type"));
12457 toCopyElements = toCopyExistingBoundary = false;
12459 SMESH_MeshEditor tgtEditor( targetMesh ? targetMesh : myMesh );
12460 SMESHDS_Mesh* aMesh = GetMeshDS(), *tgtMeshDS = tgtEditor.GetMeshDS();
12461 int nbAddedBnd = 0;
12463 // editor adding present bnd elements and optionally holding elements to add to the group
12464 SMESH_MeshEditor* presentEditor;
12465 SMESH_MeshEditor tgtEditor2( tgtEditor.GetMesh() );
12466 presentEditor = toAddExistingBondary ? &tgtEditor : &tgtEditor2;
12468 SMESH_MesherHelper helper( *myMesh );
12469 const TopAbs_ShapeEnum missShapeType = ( missType==SMDSAbs_Face ? TopAbs_FACE : TopAbs_EDGE );
12470 SMDS_VolumeTool vTool;
12471 TIDSortedElemSet avoidSet;
12472 const TIDSortedElemSet emptySet, *elemSet = aroundElements ? &elements : &emptySet;
12475 typedef vector<const SMDS_MeshNode*> TConnectivity;
12476 TConnectivity tgtNodes;
12477 ElemFeatures elemKind( missType ), elemToCopy;
12479 vector<const SMDS_MeshElement*> presentBndElems;
12480 vector<TConnectivity> missingBndElems;
12481 vector<int> freeFacets;
12482 TConnectivity nodes, elemNodes;
12484 SMDS_ElemIteratorPtr eIt;
12485 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12486 else eIt = elemSetIterator( elements );
12488 while (eIt->more())
12490 const SMDS_MeshElement* elem = eIt->next();
12491 const int iQuad = elem->IsQuadratic();
12492 elemKind.SetQuad( iQuad );
12494 // ------------------------------------------------------------------------------------
12495 // 1. For an elem, get present bnd elements and connectivities of missing bnd elements
12496 // ------------------------------------------------------------------------------------
12497 presentBndElems.clear();
12498 missingBndElems.clear();
12499 freeFacets.clear(); nodes.clear(); elemNodes.clear();
12500 if ( vTool.Set(elem, /*ignoreCentralNodes=*/true) ) // elem is a volume --------------
12502 const SMDS_MeshElement* otherVol = 0;
12503 for ( int iface = 0, n = vTool.NbFaces(); iface < n; iface++ )
12505 if ( !vTool.IsFreeFace(iface, &otherVol) &&
12506 ( !aroundElements || elements.count( otherVol )))
12508 freeFacets.push_back( iface );
12510 if ( missType == SMDSAbs_Face )
12511 vTool.SetExternalNormal();
12512 for ( size_t i = 0; i < freeFacets.size(); ++i )
12514 int iface = freeFacets[i];
12515 const SMDS_MeshNode** nn = vTool.GetFaceNodes(iface);
12516 const size_t nbFaceNodes = vTool.NbFaceNodes (iface);
12517 if ( missType == SMDSAbs_Edge ) // boundary edges
12519 nodes.resize( 2+iQuad );
12520 for ( size_t i = 0; i < nbFaceNodes; i += 1+iQuad )
12522 for ( size_t j = 0; j < nodes.size(); ++j )
12523 nodes[ j ] = nn[ i+j ];
12524 if ( const SMDS_MeshElement* edge =
12525 aMesh->FindElement( nodes, SMDSAbs_Edge, /*noMedium=*/false ))
12526 presentBndElems.push_back( edge );
12528 missingBndElems.push_back( nodes );
12531 else // boundary face
12534 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12535 nodes.push_back( nn[inode] ); // add corner nodes
12537 for ( inode = 1; inode < nbFaceNodes; inode += 2)
12538 nodes.push_back( nn[inode] ); // add medium nodes
12539 int iCenter = vTool.GetCenterNodeIndex(iface); // for HEX27
12541 nodes.push_back( vTool.GetNodes()[ iCenter ] );
12543 if (const SMDS_MeshElement * f = aMesh->FindElement( nodes,
12544 SMDSAbs_Face, /*noMedium=*/false ))
12545 presentBndElems.push_back( f );
12547 missingBndElems.push_back( nodes );
12549 if ( targetMesh != myMesh )
12551 // add 1D elements on face boundary to be added to a new mesh
12552 const SMDS_MeshElement* edge;
12553 for ( inode = 0; inode < nbFaceNodes; inode += 1+iQuad)
12556 edge = aMesh->FindEdge( nn[inode], nn[inode+1], nn[inode+2]);
12558 edge = aMesh->FindEdge( nn[inode], nn[inode+1]);
12559 if ( edge && avoidSet.insert( edge ).second )
12560 presentBndElems.push_back( edge );
12566 else if ( elem->GetType() == SMDSAbs_Face ) // elem is a face ------------------------
12568 avoidSet.clear(), avoidSet.insert( elem );
12569 elemNodes.assign( SMDS_MeshElement::iterator( elem->interlacedNodesElemIterator() ),
12570 SMDS_MeshElement::iterator() );
12571 elemNodes.push_back( elemNodes[0] );
12572 nodes.resize( 2 + iQuad );
12573 const int nbLinks = elem->NbCornerNodes();
12574 for ( int i = 0, iN = 0; i < nbLinks; i++, iN += 1+iQuad )
12576 nodes[0] = elemNodes[iN];
12577 nodes[1] = elemNodes[iN+1+iQuad];
12578 if ( SMESH_MeshAlgos::FindFaceInSet( nodes[0], nodes[1], *elemSet, avoidSet))
12579 continue; // not free link
12581 if ( iQuad ) nodes[2] = elemNodes[iN+1];
12582 if ( const SMDS_MeshElement* edge =
12583 aMesh->FindElement(nodes,SMDSAbs_Edge,/*noMedium=*/false))
12584 presentBndElems.push_back( edge );
12586 missingBndElems.push_back( nodes );
12590 // ---------------------------------
12591 // 2. Add missing boundary elements
12592 // ---------------------------------
12593 if ( targetMesh != myMesh )
12594 // instead of making a map of nodes in this mesh and targetMesh,
12595 // we create nodes with same IDs.
12596 for ( size_t i = 0; i < missingBndElems.size(); ++i )
12598 TConnectivity& srcNodes = missingBndElems[i];
12599 tgtNodes.resize( srcNodes.size() );
12600 for ( inode = 0; inode < srcNodes.size(); ++inode )
12601 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, srcNodes[inode] );
12602 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( tgtNodes,
12604 /*noMedium=*/false))
12606 tgtEditor.AddElement( tgtNodes, elemKind.SetPoly( tgtNodes.size()/(iQuad+1) > 4 ));
12610 for ( size_t i = 0; i < missingBndElems.size(); ++i )
12612 TConnectivity& nodes = missingBndElems[ i ];
12613 if ( aroundElements && tgtEditor.GetMeshDS()->FindElement( nodes,
12615 /*noMedium=*/false))
12617 SMDS_MeshElement* newElem =
12618 tgtEditor.AddElement( nodes, elemKind.SetPoly( nodes.size()/(iQuad+1) > 4 ));
12619 nbAddedBnd += bool( newElem );
12621 // try to set a new element to a shape
12622 if ( myMesh->HasShapeToMesh() )
12625 set< pair<TopAbs_ShapeEnum, int > > mediumShapes;
12626 const size_t nbN = nodes.size() / (iQuad+1 );
12627 for ( inode = 0; inode < nbN && ok; ++inode )
12629 pair<int, TopAbs_ShapeEnum> i_stype =
12630 helper.GetMediumPos( nodes[inode], nodes[(inode+1)%nbN]);
12631 if (( ok = ( i_stype.first > 0 && i_stype.second >= TopAbs_FACE )))
12632 mediumShapes.insert( make_pair ( i_stype.second, i_stype.first ));
12634 if ( ok && mediumShapes.size() > 1 )
12636 set< pair<TopAbs_ShapeEnum, int > >::iterator stype_i = mediumShapes.begin();
12637 pair<TopAbs_ShapeEnum, int> stype_i_0 = *stype_i;
12638 for ( ++stype_i; stype_i != mediumShapes.end() && ok; ++stype_i )
12640 if (( ok = ( stype_i->first != stype_i_0.first )))
12641 ok = helper.IsSubShape( aMesh->IndexToShape( stype_i->second ),
12642 aMesh->IndexToShape( stype_i_0.second ));
12645 if ( ok && mediumShapes.begin()->first == missShapeType )
12646 aMesh->SetMeshElementOnShape( newElem, mediumShapes.begin()->second );
12650 // ----------------------------------
12651 // 3. Copy present boundary elements
12652 // ----------------------------------
12653 if ( toCopyExistingBoundary )
12654 for ( size_t i = 0 ; i < presentBndElems.size(); ++i )
12656 const SMDS_MeshElement* e = presentBndElems[i];
12657 tgtNodes.resize( e->NbNodes() );
12658 for ( inode = 0; inode < tgtNodes.size(); ++inode )
12659 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, e->GetNode(inode) );
12660 presentEditor->AddElement( tgtNodes, elemToCopy.Init( e ));
12662 else // store present elements to add them to a group
12663 for ( size_t i = 0 ; i < presentBndElems.size(); ++i )
12665 presentEditor->myLastCreatedElems.Append( presentBndElems[ i ]);
12668 } // loop on given elements
12670 // ---------------------------------------------
12671 // 4. Fill group with boundary elements
12672 // ---------------------------------------------
12675 if ( SMESHDS_Group* g = dynamic_cast<SMESHDS_Group*>( group->GetGroupDS() ))
12676 for ( int i = 0; i < tgtEditor.myLastCreatedElems.Size(); ++i )
12677 g->SMDSGroup().Add( tgtEditor.myLastCreatedElems( i+1 ));
12679 tgtEditor.myLastCreatedElems.Clear();
12680 tgtEditor2.myLastCreatedElems.Clear();
12682 // -----------------------
12683 // 5. Copy given elements
12684 // -----------------------
12685 if ( toCopyElements && targetMesh != myMesh )
12687 if (elements.empty()) eIt = aMesh->elementsIterator(elemType);
12688 else eIt = elemSetIterator( elements );
12689 while (eIt->more())
12691 const SMDS_MeshElement* elem = eIt->next();
12692 tgtNodes.resize( elem->NbNodes() );
12693 for ( inode = 0; inode < tgtNodes.size(); ++inode )
12694 tgtNodes[inode] = getNodeWithSameID( tgtMeshDS, elem->GetNode(inode) );
12695 tgtEditor.AddElement( tgtNodes, elemToCopy.Init( elem ));
12697 tgtEditor.myLastCreatedElems.Clear();
12703 //================================================================================
12705 * \brief Copy node position and set \a to node on the same geometry
12707 //================================================================================
12709 void SMESH_MeshEditor::copyPosition( const SMDS_MeshNode* from,
12710 const SMDS_MeshNode* to )
12712 if ( !from || !to ) return;
12714 SMDS_PositionPtr pos = from->GetPosition();
12715 if ( !pos || from->getshapeId() < 1 ) return;
12717 switch ( pos->GetTypeOfPosition() )
12719 case SMDS_TOP_3DSPACE: break;
12721 case SMDS_TOP_FACE:
12723 const SMDS_FacePosition* fPos = static_cast< const SMDS_FacePosition* >( pos );
12724 GetMeshDS()->SetNodeOnFace( to, from->getshapeId(),
12725 fPos->GetUParameter(), fPos->GetVParameter() );
12728 case SMDS_TOP_EDGE:
12730 // WARNING: it is dangerous to set equal nodes on one EDGE!!!!!!!!
12731 const SMDS_EdgePosition* ePos = static_cast< const SMDS_EdgePosition* >( pos );
12732 GetMeshDS()->SetNodeOnEdge( to, from->getshapeId(), ePos->GetUParameter() );
12735 case SMDS_TOP_VERTEX:
12737 GetMeshDS()->SetNodeOnVertex( to, from->getshapeId() );
12740 case SMDS_TOP_UNSPEC: