1 // Copyright (C) 2005 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
2 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License.
9 // This library is distributed in the hope that it will be useful
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // File: SMESH_MesherHelper.cxx
21 // Created: 15.02.06 15:22:41
22 // Author: Sergey KUUL
23 // Copyright: Open CASCADE 2006
26 #include "SMESH_MesherHelper.hxx"
28 #include "SMDS_FacePosition.hxx"
29 #include "SMDS_EdgePosition.hxx"
30 #include "SMESH_MeshEditor.hxx"
32 #include <BRepAdaptor_Surface.hxx>
33 #include <BRepTools.hxx>
34 #include <BRep_Tool.hxx>
35 #include <Geom2d_Curve.hxx>
36 #include <Geom_Curve.hxx>
37 #include <Geom_Surface.hxx>
38 #include <TopExp_Explorer.hxx>
39 #include <TopTools_MapOfShape.hxx>
40 #include <gp_Pnt2d.hxx>
41 #include <ShapeAnalysis.hxx>
43 #include <utilities.h>
45 #define RETURN_BAD_RESULT(msg) { MESSAGE(msg); return false; }
47 //================================================================================
51 //================================================================================
53 SMESH_MesherHelper::SMESH_MesherHelper(SMESH_Mesh& theMesh)
54 : myMesh(&theMesh), myShapeID(-1), myCreateQuadratic(false)
56 mySetElemOnShape = ( ! myMesh->HasShapeToMesh() );
59 //=======================================================================
60 //function : CheckShape
62 //=======================================================================
64 bool SMESH_MesherHelper::IsQuadraticSubMesh(const TopoDS_Shape& aSh)
66 SMESHDS_Mesh* meshDS = GetMeshDS();
67 // we can create quadratic elements only if all elements
68 // created on subshapes of given shape are quadratic
69 // also we have to fill myNLinkNodeMap
70 myCreateQuadratic = true;
71 mySeamShapeIds.clear();
72 TopAbs_ShapeEnum subType( aSh.ShapeType()==TopAbs_FACE ? TopAbs_EDGE : TopAbs_FACE );
73 SMDSAbs_ElementType elemType( subType==TopAbs_FACE ? SMDSAbs_Face : SMDSAbs_Edge );
75 TopExp_Explorer exp( aSh, subType );
76 for (; exp.More() && myCreateQuadratic; exp.Next()) {
77 if ( SMESHDS_SubMesh * subMesh = meshDS->MeshElements( exp.Current() )) {
78 if ( SMDS_ElemIteratorPtr it = subMesh->GetElements() ) {
80 const SMDS_MeshElement* e = it->next();
81 if ( e->GetType() != elemType || !e->IsQuadratic() ) {
82 myCreateQuadratic = false;
87 switch ( e->NbNodes() ) {
89 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(2)); break;
91 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(3));
92 AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(4));
93 AddNLinkNode(e->GetNode(2),e->GetNode(0),e->GetNode(5)); break;
95 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(4));
96 AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(5));
97 AddNLinkNode(e->GetNode(2),e->GetNode(3),e->GetNode(6));
98 AddNLinkNode(e->GetNode(3),e->GetNode(0),e->GetNode(7));
101 myCreateQuadratic = false;
110 if(!myCreateQuadratic) {
111 myNLinkNodeMap.clear();
115 return myCreateQuadratic;
118 //================================================================================
120 * \brief Set geomerty to make elements on
121 * \param aSh - geomertic shape
123 //================================================================================
125 void SMESH_MesherHelper::SetSubShape(const int aShID)
127 if ( aShID == myShapeID )
130 SetSubShape( GetMeshDS()->IndexToShape( aShID ));
132 SetSubShape( TopoDS_Shape() );
135 //================================================================================
137 * \brief Set geomerty to make elements on
138 * \param aSh - geomertic shape
140 //================================================================================
142 void SMESH_MesherHelper::SetSubShape(const TopoDS_Shape& aSh)
144 if ( myShape.IsSame( aSh ))
148 mySeamShapeIds.clear();
150 if ( myShape.IsNull() ) {
154 SMESHDS_Mesh* meshDS = GetMeshDS();
155 myShapeID = meshDS->ShapeToIndex(aSh);
157 // treatment of periodic faces
158 for ( TopExp_Explorer eF( aSh, TopAbs_FACE ); eF.More(); eF.Next() )
160 const TopoDS_Face& face = TopoDS::Face( eF.Current() );
161 BRepAdaptor_Surface surface( face );
162 if ( surface.IsUPeriodic() || surface.IsVPeriodic() )
164 // look for a seam edge
165 for ( TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next()) {
166 const TopoDS_Edge& edge = TopoDS::Edge( exp.Current() );
167 if ( BRep_Tool::IsClosed( edge, face )) {
168 // initialize myPar1, myPar2 and myParIndex
169 if ( mySeamShapeIds.empty() ) {
171 BRep_Tool::UVPoints( edge, face, uv1, uv2 );
172 if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) ))
174 myParIndex = 1; // U periodic
175 myPar1 = surface.FirstUParameter();
176 myPar2 = surface.LastUParameter();
179 myParIndex = 2; // V periodic
180 myPar1 = surface.FirstVParameter();
181 myPar2 = surface.LastVParameter();
184 // store shapes indices
185 mySeamShapeIds.insert( meshDS->ShapeToIndex( exp.Current() ));
186 for ( TopExp_Explorer v( exp.Current(), TopAbs_VERTEX ); v.More(); v.Next() )
187 mySeamShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
194 //================================================================================
196 * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
197 * \param F - the face
198 * \retval bool - return true if the face is periodic
200 //================================================================================
202 bool SMESH_MesherHelper::GetNodeUVneedInFaceNode(const TopoDS_Face& F) const
204 if ( F.IsNull() ) return !mySeamShapeIds.empty();
206 if ( !F.IsNull() && !myShape.IsNull() && myShape.IsSame( F ))
207 return !mySeamShapeIds.empty();
209 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( F );
210 if ( !aSurface.IsNull() )
211 return ( aSurface->IsUPeriodic() || aSurface->IsVPeriodic() );
216 //=======================================================================
217 //function : IsMedium
219 //=======================================================================
221 bool SMESH_MesherHelper::IsMedium(const SMDS_MeshNode* node,
222 const SMDSAbs_ElementType typeToCheck)
224 return SMESH_MeshEditor::IsMedium( node, typeToCheck );
227 //=======================================================================
228 //function : AddNLinkNode
230 //=======================================================================
232 * Auxilary function for filling myNLinkNodeMap
234 void SMESH_MesherHelper::AddNLinkNode(const SMDS_MeshNode* n1,
235 const SMDS_MeshNode* n2,
236 const SMDS_MeshNode* n12)
238 NLink link( n1, n2 );
239 if ( n1 > n2 ) link = NLink( n2, n1 );
240 // add new record to map
241 myNLinkNodeMap.insert( make_pair(link,n12));
244 //=======================================================================
246 * \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
247 * \param uv1 - UV on the seam
248 * \param uv2 - UV within a face
249 * \retval gp_Pnt2d - selected UV
251 //=======================================================================
253 gp_Pnt2d SMESH_MesherHelper::GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const
255 double p1 = uv1.Coord( myParIndex );
256 double p2 = uv2.Coord( myParIndex );
257 double p3 = ( Abs( p1 - myPar1 ) < Abs( p1 - myPar2 )) ? myPar2 : myPar1;
258 if ( Abs( p2 - p1 ) > Abs( p2 - p3 ))
260 gp_Pnt2d result = uv1;
261 result.SetCoord( myParIndex, p1 );
265 //=======================================================================
267 * \brief Return node UV on face
268 * \param F - the face
269 * \param n - the node
270 * \param n2 - a node of element being created located inside a face
271 * \retval gp_XY - resulting UV
273 * Auxilary function called form GetMediumNode()
275 //=======================================================================
277 gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F,
278 const SMDS_MeshNode* n,
279 const SMDS_MeshNode* n2) const
281 gp_Pnt2d uv( 1e100, 1e100 );
282 const SMDS_PositionPtr Pos = n->GetPosition();
283 if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE)
285 // node has position on face
286 const SMDS_FacePosition* fpos =
287 static_cast<const SMDS_FacePosition*>(n->GetPosition().get());
288 uv = gp_Pnt2d(fpos->GetUParameter(),fpos->GetVParameter());
290 else if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE)
292 // node has position on edge => it is needed to find
293 // corresponding edge from face, get pcurve for this
294 // edge and recieve value from this pcurve
295 const SMDS_EdgePosition* epos =
296 static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
297 SMESHDS_Mesh* meshDS = GetMeshDS();
298 int edgeID = Pos->GetShapeId();
299 TopoDS_Edge E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
302 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
303 uv = C2d->Value( epos->GetUParameter() );
304 // for a node on a seam edge select one of UVs on 2 pcurves
305 if ( n2 && mySeamShapeIds.find( edgeID ) != mySeamShapeIds.end() )
306 uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
308 else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX)
310 int vertexID = n->GetPosition()->GetShapeId();
311 const TopoDS_Vertex& V = TopoDS::Vertex(GetMeshDS()->IndexToShape(vertexID));
312 uv = BRep_Tool::Parameters( V, F );
313 if ( n2 && mySeamShapeIds.find( vertexID ) != mySeamShapeIds.end() )
314 uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
319 //=======================================================================
321 * \brief Return node U on edge
322 * \param E - the Edge
323 * \param n - the node
324 * \retval double - resulting U
326 * Auxilary function called form GetMediumNode()
328 //=======================================================================
330 double SMESH_MesherHelper::GetNodeU(const TopoDS_Edge& E,
331 const SMDS_MeshNode* n)
334 const SMDS_PositionPtr Pos = n->GetPosition();
335 if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE) {
336 const SMDS_EdgePosition* epos =
337 static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
338 param = epos->GetUParameter();
340 else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX) {
341 SMESHDS_Mesh * meshDS = GetMeshDS();
342 int vertexID = n->GetPosition()->GetShapeId();
343 const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
344 param = BRep_Tool::Parameter( V, E );
349 //=======================================================================
350 //function : GetMediumNode
352 //=======================================================================
354 * Special function for search or creation medium node
356 const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1,
357 const SMDS_MeshNode* n2,
360 TopAbs_ShapeEnum shapeType = myShape.IsNull() ? TopAbs_SHAPE : myShape.ShapeType();
362 NLink link(( n1 < n2 ? n1 : n2 ), ( n1 < n2 ? n2 : n1 ));
363 ItNLinkNode itLN = myNLinkNodeMap.find( link );
364 if ( itLN != myNLinkNodeMap.end() ) {
365 return (*itLN).second;
368 // create medium node
370 SMESHDS_Mesh* meshDS = GetMeshDS();
371 int faceID = -1, edgeID = -1;
372 const SMDS_PositionPtr Pos1 = n1->GetPosition();
373 const SMDS_PositionPtr Pos2 = n2->GetPosition();
375 if( myShape.IsNull() )
377 if( Pos1->GetTypeOfPosition()==SMDS_TOP_FACE ) {
378 faceID = Pos1->GetShapeId();
380 else if( Pos2->GetTypeOfPosition()==SMDS_TOP_FACE ) {
381 faceID = Pos2->GetShapeId();
384 if( Pos1->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
385 edgeID = Pos1->GetShapeId();
387 if( Pos2->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
388 edgeID = Pos2->GetShapeId();
393 // we try to create medium node using UV parameters of
394 // nodes, else - medium between corresponding 3d points
395 if(faceID>-1 || shapeType == TopAbs_FACE) {
396 // obtaining a face and 2d points for nodes
398 if( myShape.IsNull() )
399 F = TopoDS::Face(meshDS->IndexToShape(faceID));
401 F = TopoDS::Face(myShape);
405 gp_XY p1 = GetNodeUV(F,n1,n2);
406 gp_XY p2 = GetNodeUV(F,n2,n1);
408 //checking if surface is periodic
409 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
410 Standard_Real UF,UL,VF,VL;
411 S->Bounds(UF,UL,VF,VL);
414 Standard_Boolean isUPeriodic = S->IsUPeriodic();
416 Standard_Real UPeriod = S->UPeriod();
417 Standard_Real p2x = p2.X()+ShapeAnalysis::AdjustByPeriod(p2.X(),p1.X(),UPeriod);
418 Standard_Real pmid = (p1.X()+p2x)/2.;
419 u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,UF,UL);
422 u= (p1.X()+p2.X())/2.;
424 Standard_Boolean isVPeriodic = S->IsVPeriodic();
426 Standard_Real VPeriod = S->VPeriod();
427 Standard_Real p2y = p2.Y()+ShapeAnalysis::AdjustByPeriod(p2.Y(),p1.Y(),VPeriod);
428 Standard_Real pmid = (p1.Y()+p2y)/2.;
429 v = pmid+ShapeAnalysis::AdjustToPeriod(pmid,VF,VL);
432 v = (p1.Y()+p2.Y())/2.;
434 gp_Pnt P = S->Value(u, v);
435 n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
436 meshDS->SetNodeOnFace(n12, faceID, u, v);
437 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
440 if (edgeID>-1 || shapeType == TopAbs_EDGE) {
443 if( myShape.IsNull() )
444 E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
446 E = TopoDS::Edge(myShape);
450 double p1 = GetNodeU(E,n1);
451 double p2 = GetNodeU(E,n2);
454 Handle(Geom_Curve) C = BRep_Tool::Curve(E, f, l);
457 Standard_Boolean isPeriodic = C->IsPeriodic();
460 Standard_Real Period = C->Period();
461 Standard_Real p = p2+ShapeAnalysis::AdjustByPeriod(p2,p1,Period);
462 Standard_Real pmid = (p1+p)/2.;
463 u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,C->FirstParameter(),C->LastParameter());
468 gp_Pnt P = C->Value( u );
469 n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
470 meshDS->SetNodeOnEdge(n12, edgeID, u);
471 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
477 double x = ( n1->X() + n2->X() )/2.;
478 double y = ( n1->Y() + n2->Y() )/2.;
479 double z = ( n1->Z() + n2->Z() )/2.;
480 n12 = meshDS->AddNode(x,y,z);
482 meshDS->SetNodeOnEdge(n12, edgeID);
484 meshDS->SetNodeOnFace(n12, faceID);
486 meshDS->SetNodeInVolume(n12, myShapeID);
487 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
492 //=======================================================================
496 //=======================================================================
498 SMDS_MeshNode* SMESH_MesherHelper::AddNode(double x, double y, double z, int ID)
500 SMESHDS_Mesh * meshDS = GetMeshDS();
501 SMDS_MeshNode* node = 0;
503 node = meshDS->AddNodeWithID( x, y, z, ID );
505 node = meshDS->AddNode( x, y, z );
506 if ( mySetElemOnShape && myShapeID > 0 ) {
507 switch ( myShape.ShapeType() ) {
508 case TopAbs_SOLID: meshDS->SetNodeInVolume( node, myShapeID); break;
509 case TopAbs_SHELL: meshDS->SetNodeInVolume( node, myShapeID); break;
510 case TopAbs_FACE: meshDS->SetNodeOnFace( node, myShapeID); break;
511 case TopAbs_EDGE: meshDS->SetNodeOnEdge( node, myShapeID); break;
512 case TopAbs_VERTEX: meshDS->SetNodeOnVertex( node, myShapeID); break;
519 //=======================================================================
521 * Creates quadratic or linear edge
523 //=======================================================================
525 SMDS_MeshEdge* SMESH_MesherHelper::AddEdge(const SMDS_MeshNode* n1,
526 const SMDS_MeshNode* n2,
530 SMESHDS_Mesh * meshDS = GetMeshDS();
532 SMDS_MeshEdge* edge = 0;
533 if (myCreateQuadratic) {
534 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
536 edge = meshDS->AddEdgeWithID(n1, n2, n12, id);
538 edge = meshDS->AddEdge(n1, n2, n12);
542 edge = meshDS->AddEdgeWithID(n1, n2, id);
544 edge = meshDS->AddEdge(n1, n2);
547 if ( mySetElemOnShape && myShapeID > 0 )
548 meshDS->SetMeshElementOnShape( edge, myShapeID );
553 //=======================================================================
555 * Creates quadratic or linear triangle
557 //=======================================================================
559 SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
560 const SMDS_MeshNode* n2,
561 const SMDS_MeshNode* n3,
565 SMESHDS_Mesh * meshDS = GetMeshDS();
566 SMDS_MeshFace* elem = 0;
567 if(!myCreateQuadratic) {
569 elem = meshDS->AddFaceWithID(n1, n2, n3, id);
571 elem = meshDS->AddFace(n1, n2, n3);
574 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
575 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
576 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
579 elem = meshDS->AddFaceWithID(n1, n2, n3, n12, n23, n31, id);
581 elem = meshDS->AddFace(n1, n2, n3, n12, n23, n31);
583 if ( mySetElemOnShape && myShapeID > 0 )
584 meshDS->SetMeshElementOnShape( elem, myShapeID );
589 //=======================================================================
591 * Creates quadratic or linear quadrangle
593 //=======================================================================
595 SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
596 const SMDS_MeshNode* n2,
597 const SMDS_MeshNode* n3,
598 const SMDS_MeshNode* n4,
602 SMESHDS_Mesh * meshDS = GetMeshDS();
603 SMDS_MeshFace* elem = 0;
604 if(!myCreateQuadratic) {
606 elem = meshDS->AddFaceWithID(n1, n2, n3, n4, id);
608 elem = meshDS->AddFace(n1, n2, n3, n4);
611 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
612 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
613 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
614 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
617 elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
619 elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
621 if ( mySetElemOnShape && myShapeID > 0 )
622 meshDS->SetMeshElementOnShape( elem, myShapeID );
627 //=======================================================================
629 * Creates quadratic or linear volume
631 //=======================================================================
633 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
634 const SMDS_MeshNode* n2,
635 const SMDS_MeshNode* n3,
636 const SMDS_MeshNode* n4,
637 const SMDS_MeshNode* n5,
638 const SMDS_MeshNode* n6,
642 SMESHDS_Mesh * meshDS = GetMeshDS();
643 SMDS_MeshVolume* elem = 0;
644 if(!myCreateQuadratic) {
646 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, id);
648 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6);
651 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
652 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
653 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
655 const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
656 const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
657 const SMDS_MeshNode* n64 = GetMediumNode(n6,n4,force3d);
659 const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
660 const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
661 const SMDS_MeshNode* n36 = GetMediumNode(n3,n6,force3d);
664 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6,
665 n12, n23, n31, n45, n56, n64, n14, n25, n36, id);
667 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6,
668 n12, n23, n31, n45, n56, n64, n14, n25, n36);
670 if ( mySetElemOnShape && myShapeID > 0 )
671 meshDS->SetMeshElementOnShape( elem, myShapeID );
676 //=======================================================================
678 * Creates quadratic or linear volume
680 //=======================================================================
682 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
683 const SMDS_MeshNode* n2,
684 const SMDS_MeshNode* n3,
685 const SMDS_MeshNode* n4,
689 SMESHDS_Mesh * meshDS = GetMeshDS();
690 SMDS_MeshVolume* elem = 0;
691 if(!myCreateQuadratic) {
693 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, id);
695 elem = meshDS->AddVolume(n1, n2, n3, n4);
698 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
699 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
700 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
702 const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
703 const SMDS_MeshNode* n24 = GetMediumNode(n2,n4,force3d);
704 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
707 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34, id);
709 elem = meshDS->AddVolume(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34);
711 if ( mySetElemOnShape && myShapeID > 0 )
712 meshDS->SetMeshElementOnShape( elem, myShapeID );
717 //=======================================================================
719 * Creates quadratic or linear pyramid
721 //=======================================================================
723 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
724 const SMDS_MeshNode* n2,
725 const SMDS_MeshNode* n3,
726 const SMDS_MeshNode* n4,
727 const SMDS_MeshNode* n5,
731 SMDS_MeshVolume* elem = 0;
732 if(!myCreateQuadratic) {
734 elem = GetMeshDS()->AddVolumeWithID(n1, n2, n3, n4, n5, id);
736 elem = GetMeshDS()->AddVolume(n1, n2, n3, n4, n5);
739 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
740 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
741 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
742 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
744 const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
745 const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
746 const SMDS_MeshNode* n35 = GetMediumNode(n3,n5,force3d);
747 const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
750 elem = GetMeshDS()->AddVolumeWithID ( n1, n2, n3, n4, n5,
755 elem = GetMeshDS()->AddVolume( n1, n2, n3, n4, n5,
759 if ( mySetElemOnShape && myShapeID > 0 )
760 GetMeshDS()->SetMeshElementOnShape( elem, myShapeID );
765 //=======================================================================
767 * Creates quadratic or linear hexahedron
769 //=======================================================================
771 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
772 const SMDS_MeshNode* n2,
773 const SMDS_MeshNode* n3,
774 const SMDS_MeshNode* n4,
775 const SMDS_MeshNode* n5,
776 const SMDS_MeshNode* n6,
777 const SMDS_MeshNode* n7,
778 const SMDS_MeshNode* n8,
782 SMESHDS_Mesh * meshDS = GetMeshDS();
783 SMDS_MeshVolume* elem = 0;
784 if(!myCreateQuadratic) {
786 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8, id);
788 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8);
791 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
792 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
793 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
794 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
796 const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
797 const SMDS_MeshNode* n67 = GetMediumNode(n6,n7,force3d);
798 const SMDS_MeshNode* n78 = GetMediumNode(n7,n8,force3d);
799 const SMDS_MeshNode* n85 = GetMediumNode(n8,n5,force3d);
801 const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
802 const SMDS_MeshNode* n26 = GetMediumNode(n2,n6,force3d);
803 const SMDS_MeshNode* n37 = GetMediumNode(n3,n7,force3d);
804 const SMDS_MeshNode* n48 = GetMediumNode(n4,n8,force3d);
807 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
808 n12, n23, n34, n41, n56, n67,
809 n78, n85, n15, n26, n37, n48, id);
811 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
812 n12, n23, n34, n41, n56, n67,
813 n78, n85, n15, n26, n37, n48);
815 if ( mySetElemOnShape && myShapeID > 0 )
816 meshDS->SetMeshElementOnShape( elem, myShapeID );
821 //=======================================================================
823 * \brief Load nodes bound to face into a map of node columns
824 * \param theParam2ColumnMap - map of node columns to fill
825 * \param theFace - the face on which nodes are searched for
826 * \param theBaseEdge - the edge nodes of which are columns' bases
827 * \param theMesh - the mesh containing nodes
828 * \retval bool - false if something is wrong
830 * The key of the map is a normalized parameter of each
831 * base node on theBaseEdge.
832 * This method works in supposition that nodes on the face
833 * forms a rectangular grid and elements can be quardrangles or triangles
835 //=======================================================================
837 bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
838 const TopoDS_Face& theFace,
839 const TopoDS_Edge& theBaseEdge,
840 SMESHDS_Mesh* theMesh)
842 // get vertices of theBaseEdge
843 TopoDS_Vertex vfb, vlb, vft; // first and last, bottom and top vertices
844 TopoDS_Edge eFrw = TopoDS::Edge( theBaseEdge.Oriented( TopAbs_FORWARD ));
845 TopExp::Vertices( eFrw, vfb, vlb );
847 // find the other edges of theFace and orientation of e1
848 TopoDS_Edge e1, e2, eTop;
849 bool rev1, CumOri = false;
850 TopExp_Explorer exp( theFace, TopAbs_EDGE );
852 for ( ; exp.More(); exp.Next() ) {
853 if ( ++nbEdges > 4 ) {
854 return false; // more than 4 edges in theFace
856 TopoDS_Edge e = TopoDS::Edge( exp.Current() );
857 if ( theBaseEdge.IsSame( e ))
859 TopoDS_Vertex vCommon;
860 if ( !TopExp::CommonVertex( theBaseEdge, e, vCommon ))
862 else if ( vCommon.IsSame( vfb )) {
864 vft = TopExp::LastVertex( e1, CumOri );
865 rev1 = vfb.IsSame( vft );
867 vft = TopExp::FirstVertex( e1, CumOri );
873 return false; // less than 4 edges in theFace
875 if ( e2.IsNull() && vfb.IsSame( vlb ))
878 // submeshes corresponding to shapes
879 SMESHDS_SubMesh* smFace = theMesh->MeshElements( theFace );
880 SMESHDS_SubMesh* smb = theMesh->MeshElements( theBaseEdge );
881 SMESHDS_SubMesh* smt = theMesh->MeshElements( eTop );
882 SMESHDS_SubMesh* sm1 = theMesh->MeshElements( e1 );
883 SMESHDS_SubMesh* sm2 = theMesh->MeshElements( e2 );
884 SMESHDS_SubMesh* smVfb = theMesh->MeshElements( vfb );
885 SMESHDS_SubMesh* smVlb = theMesh->MeshElements( vlb );
886 SMESHDS_SubMesh* smVft = theMesh->MeshElements( vft );
887 if (!smFace || !smb || !smt || !sm1 || !sm2 || !smVfb || !smVlb || !smVft ) {
888 RETURN_BAD_RESULT( "NULL submesh " <<smFace<<" "<<smb<<" "<<smt<<" "<<
889 sm1<<" "<<sm2<<" "<<smVfb<<" "<<smVlb<<" "<<smVft);
891 if ( smb->NbNodes() != smt->NbNodes() || sm1->NbNodes() != sm2->NbNodes() ) {
892 RETURN_BAD_RESULT(" Diff nb of nodes on opposite edges" );
894 if (smVfb->NbNodes() != 1 || smVlb->NbNodes() != 1 || smVft->NbNodes() != 1) {
895 RETURN_BAD_RESULT("Empty submesh of vertex");
897 // define whether mesh is quadratic
898 bool isQuadraticMesh = false;
899 SMDS_ElemIteratorPtr eIt = smFace->GetElements();
900 if ( !eIt->more() ) {
901 RETURN_BAD_RESULT("No elements on the face");
903 const SMDS_MeshElement* e = eIt->next();
904 isQuadraticMesh = e->IsQuadratic();
906 if ( sm1->NbNodes() * smb->NbNodes() != smFace->NbNodes() ) {
907 // check quadratic case
908 if ( isQuadraticMesh ) {
909 // what if there are quadrangles and triangles mixed?
910 // int n1 = sm1->NbNodes()/2;
911 // int n2 = smb->NbNodes()/2;
912 // int n3 = sm1->NbNodes() - n1;
913 // int n4 = smb->NbNodes() - n2;
914 // int nf = sm1->NbNodes()*smb->NbNodes() - n3*n4;
915 // if( nf != smFace->NbNodes() ) {
916 // MESSAGE( "Wrong nb face nodes: " <<
917 // sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
922 RETURN_BAD_RESULT( "Wrong nb face nodes: " <<
923 sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
927 int vsize = sm1->NbNodes() + 2;
928 int hsize = smb->NbNodes() + 2;
929 if(isQuadraticMesh) {
930 vsize = vsize - sm1->NbNodes()/2 -1;
931 hsize = hsize - smb->NbNodes()/2 -1;
934 // load nodes from theBaseEdge
936 set<const SMDS_MeshNode*> loadedNodes;
937 const SMDS_MeshNode* nullNode = 0;
939 vector<const SMDS_MeshNode*> & nVecf = theParam2ColumnMap[ 0.];
940 nVecf.resize( vsize, nullNode );
941 loadedNodes.insert( nVecf[ 0 ] = smVfb->GetNodes()->next() );
943 vector<const SMDS_MeshNode*> & nVecl = theParam2ColumnMap[ 1.];
944 nVecl.resize( vsize, nullNode );
945 loadedNodes.insert( nVecl[ 0 ] = smVlb->GetNodes()->next() );
948 BRep_Tool::Range( eFrw, f, l );
949 double range = l - f;
950 SMDS_NodeIteratorPtr nIt = smb->GetNodes();
951 const SMDS_MeshNode* node;
952 while ( nIt->more() ) {
956 const SMDS_EdgePosition* pos =
957 dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
961 double u = ( pos->GetUParameter() - f ) / range;
962 vector<const SMDS_MeshNode*> & nVec = theParam2ColumnMap[ u ];
963 nVec.resize( vsize, nullNode );
964 loadedNodes.insert( nVec[ 0 ] = node );
966 if ( theParam2ColumnMap.size() != hsize ) {
967 RETURN_BAD_RESULT( "Wrong node positions on theBaseEdge" );
970 // load nodes from e1
972 map< double, const SMDS_MeshNode*> sortedNodes; // sort by param on edge
973 nIt = sm1->GetNodes();
974 while ( nIt->more() ) {
978 const SMDS_EdgePosition* pos =
979 dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
983 sortedNodes.insert( make_pair( pos->GetUParameter(), node ));
985 loadedNodes.insert( nVecf[ vsize - 1 ] = smVft->GetNodes()->next() );
986 map< double, const SMDS_MeshNode*>::iterator u_n = sortedNodes.begin();
987 int row = rev1 ? vsize - 1 : 0;
988 int dRow = rev1 ? -1 : +1;
989 for ( ; u_n != sortedNodes.end(); u_n++ ) {
991 loadedNodes.insert( nVecf[ row ] = u_n->second );
994 // try to load the rest nodes
996 // get all faces from theFace
997 TIDSortedElemSet allFaces, foundFaces;
998 eIt = smFace->GetElements();
999 while ( eIt->more() ) {
1000 const SMDS_MeshElement* e = eIt->next();
1001 if ( e->GetType() == SMDSAbs_Face )
1002 allFaces.insert( e );
1004 // Starting from 2 neighbour nodes on theBaseEdge, look for a face
1005 // the nodes belong to, and between the nodes of the found face,
1006 // look for a not loaded node considering this node to be the next
1007 // in a column of the starting second node. Repeat, starting
1008 // from nodes next to the previous starting nodes in their columns,
1009 // and so on while a face can be found. Then go the the next pair
1010 // of nodes on theBaseEdge.
1011 TParam2ColumnMap::iterator par_nVec_1 = theParam2ColumnMap.begin();
1012 TParam2ColumnMap::iterator par_nVec_2 = par_nVec_1;
1015 for ( par_nVec_2++; par_nVec_2 != theParam2ColumnMap.end(); par_nVec_1++, par_nVec_2++ ) {
1018 const SMDS_MeshNode* n1 = par_nVec_1->second[ row ];
1019 const SMDS_MeshNode* n2 = par_nVec_2->second[ row ];
1020 const SMDS_MeshElement* face = 0;
1021 bool lastColOnClosedFace = ( nVecf[ row ] == n2 );
1023 // look for a face by 2 nodes
1024 face = SMESH_MeshEditor::FindFaceInSet( n1, n2, allFaces, foundFaces );
1026 int nbFaceNodes = face->NbNodes();
1027 if ( face->IsQuadratic() )
1029 if ( nbFaceNodes>4 ) {
1030 RETURN_BAD_RESULT(" Too many nodes in a face: " << nbFaceNodes );
1032 // look for a not loaded node of the <face>
1034 const SMDS_MeshNode* n3 = 0; // a node defferent from n1 and n2
1035 for ( int i = 0; i < nbFaceNodes && !found; ++i ) {
1036 node = face->GetNode( i );
1037 found = loadedNodes.insert( node ).second;
1038 if ( !found && node != n1 && node != n2 )
1041 if ( lastColOnClosedFace && row + 1 < vsize ) {
1042 node = nVecf[ row + 1 ];
1043 found = ( face->GetNodeIndex( node ) >= 0 );
1046 if ( ++row > vsize - 1 ) {
1047 RETURN_BAD_RESULT( "Too many nodes in column "<< col <<": "<< row+1);
1049 par_nVec_2->second[ row ] = node;
1050 foundFaces.insert( face );
1052 if ( nbFaceNodes==4 ) {
1053 n1 = par_nVec_1->second[ row ];
1056 else if ( nbFaceNodes==3 && n3 == par_nVec_1->second[ row + 1 ] ) {
1060 RETURN_BAD_RESULT( "Not quad mesh, column "<< col );
1064 while ( face && n1 && n2 );
1066 if ( row < vsize - 1 ) {
1067 MESSAGE( "Too few nodes in column "<< col <<": "<< row+1);
1068 MESSAGE( "Base node 1: "<< par_nVec_1->second[0]);
1069 MESSAGE( "Base node 2: "<< par_nVec_2->second[0]);
1070 if ( n1 ) { MESSAGE( "Current node 1: "<< n1); }
1071 else { MESSAGE( "Current node 1: NULL"); }
1072 if ( n2 ) { MESSAGE( "Current node 2: "<< n2); }
1073 else { MESSAGE( "Current node 2: NULL"); }
1074 MESSAGE( "first base node: "<< theParam2ColumnMap.begin()->second[0]);
1075 MESSAGE( "last base node: "<< theParam2ColumnMap.rbegin()->second[0]);
1078 } // loop on columns