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), mySetElemOnShape(false)
57 //=======================================================================
58 //function : CheckShape
60 //=======================================================================
62 bool SMESH_MesherHelper::IsQuadraticSubMesh(const TopoDS_Shape& aSh)
64 SMESHDS_Mesh* meshDS = GetMeshDS();
65 // we can create quadratic elements only if all elements
66 // created on subshapes of given shape are quadratic
67 // also we have to fill myNLinkNodeMap
68 myCreateQuadratic = true;
69 mySeamShapeIds.clear();
70 TopAbs_ShapeEnum subType( aSh.ShapeType()==TopAbs_FACE ? TopAbs_EDGE : TopAbs_FACE );
71 SMDSAbs_ElementType elemType( subType==TopAbs_FACE ? SMDSAbs_Face : SMDSAbs_Edge );
73 TopExp_Explorer exp( aSh, subType );
74 for (; exp.More() && myCreateQuadratic; exp.Next()) {
75 if ( SMESHDS_SubMesh * subMesh = meshDS->MeshElements( exp.Current() )) {
76 if ( SMDS_ElemIteratorPtr it = subMesh->GetElements() ) {
78 const SMDS_MeshElement* e = it->next();
79 if ( e->GetType() != elemType || !e->IsQuadratic() ) {
80 myCreateQuadratic = false;
85 switch ( e->NbNodes() ) {
87 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(2)); break;
89 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(3));
90 AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(4));
91 AddNLinkNode(e->GetNode(2),e->GetNode(0),e->GetNode(5)); break;
93 AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(4));
94 AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(5));
95 AddNLinkNode(e->GetNode(2),e->GetNode(3),e->GetNode(6));
96 AddNLinkNode(e->GetNode(3),e->GetNode(0),e->GetNode(7));
99 myCreateQuadratic = false;
108 if(!myCreateQuadratic) {
109 myNLinkNodeMap.clear();
113 return myCreateQuadratic;
116 //================================================================================
118 * \brief Set geomerty to make elements on
119 * \param aSh - geomertic shape
121 //================================================================================
123 void SMESH_MesherHelper::SetSubShape(const int aShID)
125 if ( aShID == myShapeID )
128 SetSubShape( GetMeshDS()->IndexToShape( aShID ));
130 SetSubShape( TopoDS_Shape() );
133 //================================================================================
135 * \brief Set geomerty to make elements on
136 * \param aSh - geomertic shape
138 //================================================================================
140 void SMESH_MesherHelper::SetSubShape(const TopoDS_Shape& aSh)
142 if ( myShape.IsSame( aSh ))
146 mySeamShapeIds.clear();
148 if ( myShape.IsNull() ) {
152 SMESHDS_Mesh* meshDS = GetMeshDS();
153 myShapeID = meshDS->ShapeToIndex(aSh);
155 // treatment of periodic faces
156 for ( TopExp_Explorer eF( aSh, TopAbs_FACE ); eF.More(); eF.Next() )
158 const TopoDS_Face& face = TopoDS::Face( eF.Current() );
159 BRepAdaptor_Surface surface( face );
160 if ( surface.IsUPeriodic() || surface.IsVPeriodic() )
162 // look for a seam edge
163 for ( TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next()) {
164 const TopoDS_Edge& edge = TopoDS::Edge( exp.Current() );
165 if ( BRep_Tool::IsClosed( edge, face )) {
166 // initialize myPar1, myPar2 and myParIndex
167 if ( mySeamShapeIds.empty() ) {
169 BRep_Tool::UVPoints( edge, face, uv1, uv2 );
170 if ( Abs( uv1.Coord(1) - uv2.Coord(1) ) < Abs( uv1.Coord(2) - uv2.Coord(2) ))
172 myParIndex = 1; // U periodic
173 myPar1 = surface.FirstUParameter();
174 myPar2 = surface.LastUParameter();
177 myParIndex = 2; // V periodic
178 myPar1 = surface.FirstVParameter();
179 myPar2 = surface.LastVParameter();
182 // store shapes indices
183 mySeamShapeIds.insert( meshDS->ShapeToIndex( exp.Current() ));
184 for ( TopExp_Explorer v( exp.Current(), TopAbs_VERTEX ); v.More(); v.Next() )
185 mySeamShapeIds.insert( meshDS->ShapeToIndex( v.Current() ));
192 //================================================================================
194 * \brief Check if inFaceNode argument is necessary for call GetNodeUV(F,..)
195 * \param F - the face
196 * \retval bool - return true if the face is periodic
198 //================================================================================
200 bool SMESH_MesherHelper::GetNodeUVneedInFaceNode(const TopoDS_Face& F) const
202 if ( F.IsNull() ) return !mySeamShapeIds.empty();
204 if ( !F.IsNull() && !myShape.IsNull() && myShape.IsSame( F ))
205 return !mySeamShapeIds.empty();
207 Handle(Geom_Surface) aSurface = BRep_Tool::Surface( F );
208 if ( !aSurface.IsNull() )
209 return ( aSurface->IsUPeriodic() || aSurface->IsVPeriodic() );
214 //=======================================================================
215 //function : IsMedium
217 //=======================================================================
219 bool SMESH_MesherHelper::IsMedium(const SMDS_MeshNode* node,
220 const SMDSAbs_ElementType typeToCheck)
222 return SMESH_MeshEditor::IsMedium( node, typeToCheck );
225 //=======================================================================
226 //function : AddNLinkNode
228 //=======================================================================
230 * Auxilary function for filling myNLinkNodeMap
232 void SMESH_MesherHelper::AddNLinkNode(const SMDS_MeshNode* n1,
233 const SMDS_MeshNode* n2,
234 const SMDS_MeshNode* n12)
236 NLink link( n1, n2 );
237 if ( n1 > n2 ) link = NLink( n2, n1 );
238 // add new record to map
239 myNLinkNodeMap.insert( make_pair(link,n12));
242 //=======================================================================
244 * \brief Select UV on either of 2 pcurves of a seam edge, closest to the given UV
245 * \param uv1 - UV on the seam
246 * \param uv2 - UV within a face
247 * \retval gp_Pnt2d - selected UV
249 //=======================================================================
251 gp_Pnt2d SMESH_MesherHelper::GetUVOnSeam( const gp_Pnt2d& uv1, const gp_Pnt2d& uv2 ) const
253 double p1 = uv1.Coord( myParIndex );
254 double p2 = uv2.Coord( myParIndex );
255 double p3 = ( Abs( p1 - myPar1 ) < Abs( p1 - myPar2 )) ? myPar2 : myPar1;
256 if ( Abs( p2 - p1 ) > Abs( p2 - p3 ))
258 gp_Pnt2d result = uv1;
259 result.SetCoord( myParIndex, p1 );
263 //=======================================================================
265 * \brief Return node UV on face
266 * \param F - the face
267 * \param n - the node
268 * \param n2 - a node of element being created located inside a face
269 * \retval gp_XY - resulting UV
271 * Auxilary function called form GetMediumNode()
273 //=======================================================================
275 gp_XY SMESH_MesherHelper::GetNodeUV(const TopoDS_Face& F,
276 const SMDS_MeshNode* n,
277 const SMDS_MeshNode* n2) const
279 gp_Pnt2d uv( 1e100, 1e100 );
280 const SMDS_PositionPtr Pos = n->GetPosition();
281 if(Pos->GetTypeOfPosition()==SMDS_TOP_FACE)
283 // node has position on face
284 const SMDS_FacePosition* fpos =
285 static_cast<const SMDS_FacePosition*>(n->GetPosition().get());
286 uv = gp_Pnt2d(fpos->GetUParameter(),fpos->GetVParameter());
288 else if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE)
290 // node has position on edge => it is needed to find
291 // corresponding edge from face, get pcurve for this
292 // edge and recieve value from this pcurve
293 const SMDS_EdgePosition* epos =
294 static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
295 SMESHDS_Mesh* meshDS = GetMeshDS();
296 int edgeID = Pos->GetShapeId();
297 TopoDS_Edge E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
300 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
301 uv = C2d->Value( epos->GetUParameter() );
302 // for a node on a seam edge select one of UVs on 2 pcurves
303 if ( n2 && mySeamShapeIds.find( edgeID ) != mySeamShapeIds.end() )
304 uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
306 else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX)
308 int vertexID = n->GetPosition()->GetShapeId();
309 const TopoDS_Vertex& V = TopoDS::Vertex(GetMeshDS()->IndexToShape(vertexID));
310 uv = BRep_Tool::Parameters( V, F );
311 if ( n2 && mySeamShapeIds.find( vertexID ) != mySeamShapeIds.end() )
312 uv = GetUVOnSeam( uv, GetNodeUV( F, n2, 0 ));
317 //=======================================================================
319 * \brief Return node U on edge
320 * \param E - the Edge
321 * \param n - the node
322 * \retval double - resulting U
324 * Auxilary function called form GetMediumNode()
326 //=======================================================================
328 double SMESH_MesherHelper::GetNodeU(const TopoDS_Edge& E,
329 const SMDS_MeshNode* n)
332 const SMDS_PositionPtr Pos = n->GetPosition();
333 if(Pos->GetTypeOfPosition()==SMDS_TOP_EDGE) {
334 const SMDS_EdgePosition* epos =
335 static_cast<const SMDS_EdgePosition*>(n->GetPosition().get());
336 param = epos->GetUParameter();
338 else if(Pos->GetTypeOfPosition()==SMDS_TOP_VERTEX) {
339 SMESHDS_Mesh * meshDS = GetMeshDS();
340 int vertexID = n->GetPosition()->GetShapeId();
341 const TopoDS_Vertex& V = TopoDS::Vertex(meshDS->IndexToShape(vertexID));
342 param = BRep_Tool::Parameter( V, E );
347 //=======================================================================
348 //function : GetMediumNode
350 //=======================================================================
352 * Special function for search or creation medium node
354 const SMDS_MeshNode* SMESH_MesherHelper::GetMediumNode(const SMDS_MeshNode* n1,
355 const SMDS_MeshNode* n2,
358 TopAbs_ShapeEnum shapeType = myShape.IsNull() ? TopAbs_SHAPE : myShape.ShapeType();
360 NLink link(( n1 < n2 ? n1 : n2 ), ( n1 < n2 ? n2 : n1 ));
361 ItNLinkNode itLN = myNLinkNodeMap.find( link );
362 if ( itLN != myNLinkNodeMap.end() ) {
363 return (*itLN).second;
366 // create medium node
368 SMESHDS_Mesh* meshDS = GetMeshDS();
369 int faceID = -1, edgeID = -1;
370 const SMDS_PositionPtr Pos1 = n1->GetPosition();
371 const SMDS_PositionPtr Pos2 = n2->GetPosition();
373 if( myShape.IsNull() )
375 if( Pos1->GetTypeOfPosition()==SMDS_TOP_FACE ) {
376 faceID = Pos1->GetShapeId();
378 else if( Pos2->GetTypeOfPosition()==SMDS_TOP_FACE ) {
379 faceID = Pos2->GetShapeId();
382 if( Pos1->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
383 edgeID = Pos1->GetShapeId();
385 if( Pos2->GetTypeOfPosition()==SMDS_TOP_EDGE ) {
386 edgeID = Pos2->GetShapeId();
391 // we try to create medium node using UV parameters of
392 // nodes, else - medium between corresponding 3d points
393 if(faceID>-1 || shapeType == TopAbs_FACE) {
394 // obtaining a face and 2d points for nodes
396 if( myShape.IsNull() )
397 F = TopoDS::Face(meshDS->IndexToShape(faceID));
399 F = TopoDS::Face(myShape);
403 gp_XY p1 = GetNodeUV(F,n1,n2);
404 gp_XY p2 = GetNodeUV(F,n2,n1);
406 //checking if surface is periodic
407 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
408 Standard_Real UF,UL,VF,VL;
409 S->Bounds(UF,UL,VF,VL);
412 Standard_Boolean isUPeriodic = S->IsUPeriodic();
414 Standard_Real UPeriod = S->UPeriod();
415 Standard_Real p2x = p2.X()+ShapeAnalysis::AdjustByPeriod(p2.X(),p1.X(),UPeriod);
416 Standard_Real pmid = (p1.X()+p2x)/2.;
417 u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,UF,UL);
420 u= (p1.X()+p2.X())/2.;
422 Standard_Boolean isVPeriodic = S->IsVPeriodic();
424 Standard_Real VPeriod = S->VPeriod();
425 Standard_Real p2y = p2.Y()+ShapeAnalysis::AdjustByPeriod(p2.Y(),p1.Y(),VPeriod);
426 Standard_Real pmid = (p1.Y()+p2y)/2.;
427 v = pmid+ShapeAnalysis::AdjustToPeriod(pmid,VF,VL);
430 v = (p1.Y()+p2.Y())/2.;
432 gp_Pnt P = S->Value(u, v);
433 n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
434 meshDS->SetNodeOnFace(n12, faceID, u, v);
435 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
438 if (edgeID>-1 || shapeType == TopAbs_EDGE) {
441 if( myShape.IsNull() )
442 E = TopoDS::Edge(meshDS->IndexToShape(edgeID));
444 E = TopoDS::Edge(myShape);
448 double p1 = GetNodeU(E,n1);
449 double p2 = GetNodeU(E,n2);
452 Handle(Geom_Curve) C = BRep_Tool::Curve(E, f, l);
455 Standard_Boolean isPeriodic = C->IsPeriodic();
458 Standard_Real Period = C->Period();
459 Standard_Real p = p2+ShapeAnalysis::AdjustByPeriod(p2,p1,Period);
460 Standard_Real pmid = (p1+p)/2.;
461 u = pmid+ShapeAnalysis::AdjustToPeriod(pmid,C->FirstParameter(),C->LastParameter());
466 gp_Pnt P = C->Value( u );
467 n12 = meshDS->AddNode(P.X(), P.Y(), P.Z());
468 meshDS->SetNodeOnEdge(n12, edgeID, u);
469 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
475 double x = ( n1->X() + n2->X() )/2.;
476 double y = ( n1->Y() + n2->Y() )/2.;
477 double z = ( n1->Z() + n2->Z() )/2.;
478 n12 = meshDS->AddNode(x,y,z);
480 meshDS->SetNodeOnEdge(n12, edgeID);
482 meshDS->SetNodeOnFace(n12, faceID);
484 meshDS->SetNodeInVolume(n12, myShapeID);
485 myNLinkNodeMap.insert(NLinkNodeMap::value_type(link,n12));
490 //=======================================================================
494 //=======================================================================
496 SMDS_MeshNode* SMESH_MesherHelper::AddNode(double x, double y, double z, int ID)
498 SMESHDS_Mesh * meshDS = GetMeshDS();
499 SMDS_MeshNode* node = 0;
501 node = meshDS->AddNodeWithID( x, y, z, ID );
503 node = meshDS->AddNode( x, y, z );
504 if ( mySetElemOnShape && myShapeID > 0 ) {
505 switch ( myShape.ShapeType() ) {
506 case TopAbs_SOLID: meshDS->SetNodeInVolume( node, myShapeID); break;
507 case TopAbs_SHELL: meshDS->SetNodeInVolume( node, myShapeID); break;
508 case TopAbs_FACE: meshDS->SetNodeOnFace( node, myShapeID); break;
509 case TopAbs_EDGE: meshDS->SetNodeOnEdge( node, myShapeID); break;
510 case TopAbs_VERTEX: meshDS->SetNodeOnVertex( node, myShapeID); break;
517 //=======================================================================
519 * Creates quadratic or linear edge
521 //=======================================================================
523 SMDS_MeshEdge* SMESH_MesherHelper::AddEdge(const SMDS_MeshNode* n1,
524 const SMDS_MeshNode* n2,
528 SMESHDS_Mesh * meshDS = GetMeshDS();
530 SMDS_MeshEdge* edge = 0;
531 if (myCreateQuadratic) {
532 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
534 edge = meshDS->AddEdgeWithID(n1, n2, n12, id);
536 edge = meshDS->AddEdge(n1, n2, n12);
540 edge = meshDS->AddEdgeWithID(n1, n2, id);
542 edge = meshDS->AddEdge(n1, n2);
545 if ( mySetElemOnShape && myShapeID > 0 )
546 meshDS->SetMeshElementOnShape( edge, myShapeID );
551 //=======================================================================
553 * Creates quadratic or linear triangle
555 //=======================================================================
557 SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
558 const SMDS_MeshNode* n2,
559 const SMDS_MeshNode* n3,
563 SMESHDS_Mesh * meshDS = GetMeshDS();
564 SMDS_MeshFace* elem = 0;
565 if(!myCreateQuadratic) {
567 elem = meshDS->AddFaceWithID(n1, n2, n3, id);
569 elem = meshDS->AddFace(n1, n2, n3);
572 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
573 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
574 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
577 elem = meshDS->AddFaceWithID(n1, n2, n3, n12, n23, n31, id);
579 elem = meshDS->AddFace(n1, n2, n3, n12, n23, n31);
581 if ( mySetElemOnShape && myShapeID > 0 )
582 meshDS->SetMeshElementOnShape( elem, myShapeID );
587 //=======================================================================
589 * Creates quadratic or linear quadrangle
591 //=======================================================================
593 SMDS_MeshFace* SMESH_MesherHelper::AddFace(const SMDS_MeshNode* n1,
594 const SMDS_MeshNode* n2,
595 const SMDS_MeshNode* n3,
596 const SMDS_MeshNode* n4,
600 SMESHDS_Mesh * meshDS = GetMeshDS();
601 SMDS_MeshFace* elem = 0;
602 if(!myCreateQuadratic) {
604 elem = meshDS->AddFaceWithID(n1, n2, n3, n4, id);
606 elem = meshDS->AddFace(n1, n2, n3, n4);
609 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
610 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
611 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
612 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
615 elem = meshDS->AddFaceWithID(n1, n2, n3, n4, n12, n23, n34, n41, id);
617 elem = meshDS->AddFace(n1, n2, n3, n4, n12, n23, n34, n41);
619 if ( mySetElemOnShape && myShapeID > 0 )
620 meshDS->SetMeshElementOnShape( elem, myShapeID );
625 //=======================================================================
627 * Creates quadratic or linear volume
629 //=======================================================================
631 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
632 const SMDS_MeshNode* n2,
633 const SMDS_MeshNode* n3,
634 const SMDS_MeshNode* n4,
635 const SMDS_MeshNode* n5,
636 const SMDS_MeshNode* n6,
640 SMESHDS_Mesh * meshDS = GetMeshDS();
641 SMDS_MeshVolume* elem = 0;
642 if(!myCreateQuadratic) {
644 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, id);
646 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6);
649 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
650 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
651 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
653 const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
654 const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
655 const SMDS_MeshNode* n64 = GetMediumNode(n6,n4,force3d);
657 const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
658 const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
659 const SMDS_MeshNode* n36 = GetMediumNode(n3,n6,force3d);
662 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6,
663 n12, n23, n31, n45, n56, n64, n14, n25, n36, id);
665 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6,
666 n12, n23, n31, n45, n56, n64, n14, n25, n36);
668 if ( mySetElemOnShape && myShapeID > 0 )
669 meshDS->SetMeshElementOnShape( elem, myShapeID );
674 //=======================================================================
676 * Creates quadratic or linear volume
678 //=======================================================================
680 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
681 const SMDS_MeshNode* n2,
682 const SMDS_MeshNode* n3,
683 const SMDS_MeshNode* n4,
687 SMESHDS_Mesh * meshDS = GetMeshDS();
688 SMDS_MeshVolume* elem = 0;
689 if(!myCreateQuadratic) {
691 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, id);
693 elem = meshDS->AddVolume(n1, n2, n3, n4);
696 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
697 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
698 const SMDS_MeshNode* n31 = GetMediumNode(n3,n1,force3d);
700 const SMDS_MeshNode* n14 = GetMediumNode(n1,n4,force3d);
701 const SMDS_MeshNode* n24 = GetMediumNode(n2,n4,force3d);
702 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
705 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34, id);
707 elem = meshDS->AddVolume(n1, n2, n3, n4, n12, n23, n31, n14, n24, n34);
709 if ( mySetElemOnShape && myShapeID > 0 )
710 meshDS->SetMeshElementOnShape( elem, myShapeID );
715 //=======================================================================
717 * Creates quadratic or linear pyramid
719 //=======================================================================
721 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
722 const SMDS_MeshNode* n2,
723 const SMDS_MeshNode* n3,
724 const SMDS_MeshNode* n4,
725 const SMDS_MeshNode* n5,
729 SMDS_MeshVolume* elem = 0;
730 if(!myCreateQuadratic) {
732 elem = GetMeshDS()->AddVolumeWithID(n1, n2, n3, n4, n5, id);
734 elem = GetMeshDS()->AddVolume(n1, n2, n3, n4, n5);
737 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
738 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
739 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
740 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
742 const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
743 const SMDS_MeshNode* n25 = GetMediumNode(n2,n5,force3d);
744 const SMDS_MeshNode* n35 = GetMediumNode(n3,n5,force3d);
745 const SMDS_MeshNode* n45 = GetMediumNode(n4,n5,force3d);
748 elem = GetMeshDS()->AddVolumeWithID ( n1, n2, n3, n4, n5,
753 elem = GetMeshDS()->AddVolume( n1, n2, n3, n4, n5,
757 if ( mySetElemOnShape && myShapeID > 0 )
758 GetMeshDS()->SetMeshElementOnShape( elem, myShapeID );
763 //=======================================================================
765 * Creates quadratic or linear hexahedron
767 //=======================================================================
769 SMDS_MeshVolume* SMESH_MesherHelper::AddVolume(const SMDS_MeshNode* n1,
770 const SMDS_MeshNode* n2,
771 const SMDS_MeshNode* n3,
772 const SMDS_MeshNode* n4,
773 const SMDS_MeshNode* n5,
774 const SMDS_MeshNode* n6,
775 const SMDS_MeshNode* n7,
776 const SMDS_MeshNode* n8,
780 SMESHDS_Mesh * meshDS = GetMeshDS();
781 SMDS_MeshVolume* elem = 0;
782 if(!myCreateQuadratic) {
784 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8, id);
786 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8);
789 const SMDS_MeshNode* n12 = GetMediumNode(n1,n2,force3d);
790 const SMDS_MeshNode* n23 = GetMediumNode(n2,n3,force3d);
791 const SMDS_MeshNode* n34 = GetMediumNode(n3,n4,force3d);
792 const SMDS_MeshNode* n41 = GetMediumNode(n4,n1,force3d);
794 const SMDS_MeshNode* n56 = GetMediumNode(n5,n6,force3d);
795 const SMDS_MeshNode* n67 = GetMediumNode(n6,n7,force3d);
796 const SMDS_MeshNode* n78 = GetMediumNode(n7,n8,force3d);
797 const SMDS_MeshNode* n85 = GetMediumNode(n8,n5,force3d);
799 const SMDS_MeshNode* n15 = GetMediumNode(n1,n5,force3d);
800 const SMDS_MeshNode* n26 = GetMediumNode(n2,n6,force3d);
801 const SMDS_MeshNode* n37 = GetMediumNode(n3,n7,force3d);
802 const SMDS_MeshNode* n48 = GetMediumNode(n4,n8,force3d);
805 elem = meshDS->AddVolumeWithID(n1, n2, n3, n4, n5, n6, n7, n8,
806 n12, n23, n34, n41, n56, n67,
807 n78, n85, n15, n26, n37, n48, id);
809 elem = meshDS->AddVolume(n1, n2, n3, n4, n5, n6, n7, n8,
810 n12, n23, n34, n41, n56, n67,
811 n78, n85, n15, n26, n37, n48);
813 if ( mySetElemOnShape && myShapeID > 0 )
814 meshDS->SetMeshElementOnShape( elem, myShapeID );
819 //=======================================================================
821 * \brief Load nodes bound to face into a map of node columns
822 * \param theParam2ColumnMap - map of node columns to fill
823 * \param theFace - the face on which nodes are searched for
824 * \param theBaseEdge - the edge nodes of which are columns' bases
825 * \param theMesh - the mesh containing nodes
826 * \retval bool - false if something is wrong
828 * The key of the map is a normalized parameter of each
829 * base node on theBaseEdge.
830 * This method works in supposition that nodes on the face
831 * forms a rectangular grid and elements can be quardrangles or triangles
833 //=======================================================================
835 bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
836 const TopoDS_Face& theFace,
837 const TopoDS_Edge& theBaseEdge,
838 SMESHDS_Mesh* theMesh)
840 // get vertices of theBaseEdge
841 TopoDS_Vertex vfb, vlb, vft; // first and last, bottom and top vertices
842 TopoDS_Edge eFrw = TopoDS::Edge( theBaseEdge.Oriented( TopAbs_FORWARD ));
843 TopExp::Vertices( eFrw, vfb, vlb );
845 // find the other edges of theFace and orientation of e1
846 TopoDS_Edge e1, e2, eTop;
847 bool rev1, CumOri = false;
848 TopExp_Explorer exp( theFace, TopAbs_EDGE );
850 for ( ; exp.More(); exp.Next() ) {
851 if ( ++nbEdges > 4 ) {
852 return false; // more than 4 edges in theFace
854 TopoDS_Edge e = TopoDS::Edge( exp.Current() );
855 if ( theBaseEdge.IsSame( e ))
857 TopoDS_Vertex vCommon;
858 if ( !TopExp::CommonVertex( theBaseEdge, e, vCommon ))
860 else if ( vCommon.IsSame( vfb )) {
862 vft = TopExp::LastVertex( e1, CumOri );
863 rev1 = vfb.IsSame( vft );
865 vft = TopExp::FirstVertex( e1, CumOri );
871 return false; // less than 4 edges in theFace
873 if ( e2.IsNull() && vfb.IsSame( vlb ))
876 // submeshes corresponding to shapes
877 SMESHDS_SubMesh* smFace = theMesh->MeshElements( theFace );
878 SMESHDS_SubMesh* smb = theMesh->MeshElements( theBaseEdge );
879 SMESHDS_SubMesh* smt = theMesh->MeshElements( eTop );
880 SMESHDS_SubMesh* sm1 = theMesh->MeshElements( e1 );
881 SMESHDS_SubMesh* sm2 = theMesh->MeshElements( e2 );
882 SMESHDS_SubMesh* smVfb = theMesh->MeshElements( vfb );
883 SMESHDS_SubMesh* smVlb = theMesh->MeshElements( vlb );
884 SMESHDS_SubMesh* smVft = theMesh->MeshElements( vft );
885 if (!smFace || !smb || !smt || !sm1 || !sm2 || !smVfb || !smVlb || !smVft ) {
886 RETURN_BAD_RESULT( "NULL submesh " <<smFace<<" "<<smb<<" "<<smt<<" "<<
887 sm1<<" "<<sm2<<" "<<smVfb<<" "<<smVlb<<" "<<smVft);
889 if ( smb->NbNodes() != smt->NbNodes() || sm1->NbNodes() != sm2->NbNodes() ) {
890 RETURN_BAD_RESULT(" Diff nb of nodes on opposite edges" );
892 if (smVfb->NbNodes() != 1 || smVlb->NbNodes() != 1 || smVft->NbNodes() != 1) {
893 RETURN_BAD_RESULT("Empty submesh of vertex");
895 // define whether mesh is quadratic
896 bool isQuadraticMesh = false;
897 SMDS_ElemIteratorPtr eIt = smFace->GetElements();
898 if ( !eIt->more() ) {
899 RETURN_BAD_RESULT("No elements on the face");
901 const SMDS_MeshElement* e = eIt->next();
902 isQuadraticMesh = e->IsQuadratic();
904 if ( sm1->NbNodes() * smb->NbNodes() != smFace->NbNodes() ) {
905 // check quadratic case
906 if ( isQuadraticMesh ) {
907 // what if there are quadrangles and triangles mixed?
908 // int n1 = sm1->NbNodes()/2;
909 // int n2 = smb->NbNodes()/2;
910 // int n3 = sm1->NbNodes() - n1;
911 // int n4 = smb->NbNodes() - n2;
912 // int nf = sm1->NbNodes()*smb->NbNodes() - n3*n4;
913 // if( nf != smFace->NbNodes() ) {
914 // MESSAGE( "Wrong nb face nodes: " <<
915 // sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
920 RETURN_BAD_RESULT( "Wrong nb face nodes: " <<
921 sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
925 int vsize = sm1->NbNodes() + 2;
926 int hsize = smb->NbNodes() + 2;
927 if(isQuadraticMesh) {
928 vsize = vsize - sm1->NbNodes()/2 -1;
929 hsize = hsize - smb->NbNodes()/2 -1;
932 // load nodes from theBaseEdge
934 set<const SMDS_MeshNode*> loadedNodes;
935 const SMDS_MeshNode* nullNode = 0;
937 vector<const SMDS_MeshNode*> & nVecf = theParam2ColumnMap[ 0.];
938 nVecf.resize( vsize, nullNode );
939 loadedNodes.insert( nVecf[ 0 ] = smVfb->GetNodes()->next() );
941 vector<const SMDS_MeshNode*> & nVecl = theParam2ColumnMap[ 1.];
942 nVecl.resize( vsize, nullNode );
943 loadedNodes.insert( nVecl[ 0 ] = smVlb->GetNodes()->next() );
946 BRep_Tool::Range( eFrw, f, l );
947 double range = l - f;
948 SMDS_NodeIteratorPtr nIt = smb->GetNodes();
949 const SMDS_MeshNode* node;
950 while ( nIt->more() ) {
954 const SMDS_EdgePosition* pos =
955 dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
959 double u = ( pos->GetUParameter() - f ) / range;
960 vector<const SMDS_MeshNode*> & nVec = theParam2ColumnMap[ u ];
961 nVec.resize( vsize, nullNode );
962 loadedNodes.insert( nVec[ 0 ] = node );
964 if ( theParam2ColumnMap.size() != hsize ) {
965 RETURN_BAD_RESULT( "Wrong node positions on theBaseEdge" );
968 // load nodes from e1
970 map< double, const SMDS_MeshNode*> sortedNodes; // sort by param on edge
971 nIt = sm1->GetNodes();
972 while ( nIt->more() ) {
976 const SMDS_EdgePosition* pos =
977 dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
981 sortedNodes.insert( make_pair( pos->GetUParameter(), node ));
983 loadedNodes.insert( nVecf[ vsize - 1 ] = smVft->GetNodes()->next() );
984 map< double, const SMDS_MeshNode*>::iterator u_n = sortedNodes.begin();
985 int row = rev1 ? vsize - 1 : 0;
986 int dRow = rev1 ? -1 : +1;
987 for ( ; u_n != sortedNodes.end(); u_n++ ) {
989 loadedNodes.insert( nVecf[ row ] = u_n->second );
992 // try to load the rest nodes
994 // get all faces from theFace
995 TIDSortedElemSet allFaces, foundFaces;
996 eIt = smFace->GetElements();
997 while ( eIt->more() ) {
998 const SMDS_MeshElement* e = eIt->next();
999 if ( e->GetType() == SMDSAbs_Face )
1000 allFaces.insert( e );
1002 // Starting from 2 neighbour nodes on theBaseEdge, look for a face
1003 // the nodes belong to, and between the nodes of the found face,
1004 // look for a not loaded node considering this node to be the next
1005 // in a column of the starting second node. Repeat, starting
1006 // from nodes next to the previous starting nodes in their columns,
1007 // and so on while a face can be found. Then go the the next pair
1008 // of nodes on theBaseEdge.
1009 TParam2ColumnMap::iterator par_nVec_1 = theParam2ColumnMap.begin();
1010 TParam2ColumnMap::iterator par_nVec_2 = par_nVec_1;
1013 for ( par_nVec_2++; par_nVec_2 != theParam2ColumnMap.end(); par_nVec_1++, par_nVec_2++ ) {
1016 const SMDS_MeshNode* n1 = par_nVec_1->second[ row ];
1017 const SMDS_MeshNode* n2 = par_nVec_2->second[ row ];
1018 const SMDS_MeshElement* face = 0;
1019 bool lastColOnClosedFace = ( nVecf[ row ] == n2 );
1021 // look for a face by 2 nodes
1022 face = SMESH_MeshEditor::FindFaceInSet( n1, n2, allFaces, foundFaces );
1024 int nbFaceNodes = face->NbNodes();
1025 if ( face->IsQuadratic() )
1027 if ( nbFaceNodes>4 ) {
1028 RETURN_BAD_RESULT(" Too many nodes in a face: " << nbFaceNodes );
1030 // look for a not loaded node of the <face>
1032 const SMDS_MeshNode* n3 = 0; // a node defferent from n1 and n2
1033 for ( int i = 0; i < nbFaceNodes && !found; ++i ) {
1034 node = face->GetNode( i );
1035 found = loadedNodes.insert( node ).second;
1036 if ( !found && node != n1 && node != n2 )
1039 if ( lastColOnClosedFace && row + 1 < vsize ) {
1040 node = nVecf[ row + 1 ];
1041 found = ( face->GetNodeIndex( node ) >= 0 );
1044 if ( ++row > vsize - 1 ) {
1045 RETURN_BAD_RESULT( "Too many nodes in column "<< col <<": "<< row+1);
1047 par_nVec_2->second[ row ] = node;
1048 foundFaces.insert( face );
1050 if ( nbFaceNodes==4 ) {
1051 n1 = par_nVec_1->second[ row ];
1054 else if ( nbFaceNodes==3 && n3 == par_nVec_1->second[ row + 1 ] ) {
1058 RETURN_BAD_RESULT( "Not quad mesh, column "<< col );
1062 while ( face && n1 && n2 );
1064 if ( row < vsize - 1 ) {
1065 MESSAGE( "Too few nodes in column "<< col <<": "<< row+1);
1066 MESSAGE( "Base node 1: "<< par_nVec_1->second[0]);
1067 MESSAGE( "Base node 2: "<< par_nVec_2->second[0]);
1068 if ( n1 ) { MESSAGE( "Current node 1: "<< n1); }
1069 else { MESSAGE( "Current node 1: NULL"); }
1070 if ( n2 ) { MESSAGE( "Current node 2: "<< n2); }
1071 else { MESSAGE( "Current node 2: NULL"); }
1072 MESSAGE( "first base node: "<< theParam2ColumnMap.begin()->second[0]);
1073 MESSAGE( "last base node: "<< theParam2ColumnMap.rbegin()->second[0]);
1076 } // loop on columns