1 // Copyright (C) 2007-2014 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 : StdMeshers_Prism_3D.cxx
25 // Created : Fri Oct 20 11:37:07 2006
26 // Author : Edward AGAPOV (eap)
28 #include "StdMeshers_Prism_3D.hxx"
30 #include "SMDS_EdgePosition.hxx"
31 #include "SMDS_VolumeOfNodes.hxx"
32 #include "SMDS_VolumeTool.hxx"
33 #include "SMESH_Comment.hxx"
34 #include "SMESH_Gen.hxx"
35 #include "SMESH_HypoFilter.hxx"
36 #include "SMESH_MesherHelper.hxx"
37 #include "StdMeshers_FaceSide.hxx"
38 #include "StdMeshers_ProjectionSource1D.hxx"
39 #include "StdMeshers_ProjectionSource2D.hxx"
40 #include "StdMeshers_ProjectionUtils.hxx"
41 #include "StdMeshers_Projection_1D.hxx"
42 #include "StdMeshers_Projection_1D2D.hxx"
43 #include "StdMeshers_Quadrangle_2D.hxx"
45 #include "utilities.h"
47 #include <BRepAdaptor_CompCurve.hxx>
48 #include <BRep_Tool.hxx>
49 #include <Bnd_B3d.hxx>
50 #include <Geom2dAdaptor_Curve.hxx>
51 #include <Geom2d_Line.hxx>
52 #include <GeomLib_IsPlanarSurface.hxx>
53 #include <Geom_Curve.hxx>
55 #include <TopExp_Explorer.hxx>
56 #include <TopTools_ListIteratorOfListOfShape.hxx>
57 #include <TopTools_ListOfShape.hxx>
58 #include <TopTools_MapOfShape.hxx>
59 #include <TopTools_SequenceOfShape.hxx>
68 #define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
69 #define gpXYZ(n) SMESH_TNodeXYZ(n)
72 #define DBGOUT(msg) //cout << msg << endl;
73 #define SHOWYXZ(msg, xyz) \
74 // { gp_Pnt p (xyz); \
75 // cout << msg << " ("<< p.X() << "; " <<p.Y() << "; " <<p.Z() << ") " <<endl; }
78 #define SHOWYXZ(msg, xyz)
81 namespace NSProjUtils = StdMeshers_ProjectionUtils;
83 typedef SMESH_Comment TCom;
85 enum { ID_BOT_FACE = SMESH_Block::ID_Fxy0,
86 ID_TOP_FACE = SMESH_Block::ID_Fxy1,
87 BOTTOM_EDGE = 0, TOP_EDGE, V0_EDGE, V1_EDGE, // edge IDs in face
88 NB_WALL_FACES = 4 }; //
92 //=======================================================================
94 * \brief Quadrangle algorithm
96 struct TQuadrangleAlgo : public StdMeshers_Quadrangle_2D
98 TQuadrangleAlgo(int studyId, SMESH_Gen* gen)
99 : StdMeshers_Quadrangle_2D( gen->GetANewId(), studyId, gen)
102 static StdMeshers_Quadrangle_2D* instance( SMESH_Algo* fatherAlgo,
103 SMESH_MesherHelper* helper=0)
105 static TQuadrangleAlgo* algo = new TQuadrangleAlgo( fatherAlgo->GetStudyId(),
106 fatherAlgo->GetGen() );
109 algo->myProxyMesh->GetMesh() != helper->GetMesh() )
110 algo->myProxyMesh.reset( new SMESH_ProxyMesh( *helper->GetMesh() ));
112 algo->myQuadList.clear();
115 algo->_quadraticMesh = helper->GetIsQuadratic();
120 //=======================================================================
122 * \brief Algorithm projecting 1D mesh
124 struct TProjction1dAlgo : public StdMeshers_Projection_1D
126 StdMeshers_ProjectionSource1D myHyp;
128 TProjction1dAlgo(int studyId, SMESH_Gen* gen)
129 : StdMeshers_Projection_1D( gen->GetANewId(), studyId, gen),
130 myHyp( gen->GetANewId(), studyId, gen)
132 StdMeshers_Projection_1D::_sourceHypo = & myHyp;
134 static TProjction1dAlgo* instance( SMESH_Algo* fatherAlgo )
136 static TProjction1dAlgo* algo = new TProjction1dAlgo( fatherAlgo->GetStudyId(),
137 fatherAlgo->GetGen() );
141 //=======================================================================
143 * \brief Algorithm projecting 2D mesh
145 struct TProjction2dAlgo : public StdMeshers_Projection_1D2D
147 StdMeshers_ProjectionSource2D myHyp;
149 TProjction2dAlgo(int studyId, SMESH_Gen* gen)
150 : StdMeshers_Projection_1D2D( gen->GetANewId(), studyId, gen),
151 myHyp( gen->GetANewId(), studyId, gen)
153 StdMeshers_Projection_2D::_sourceHypo = & myHyp;
155 static TProjction2dAlgo* instance( SMESH_Algo* fatherAlgo )
157 static TProjction2dAlgo* algo = new TProjction2dAlgo( fatherAlgo->GetStudyId(),
158 fatherAlgo->GetGen() );
161 const NSProjUtils::TNodeNodeMap& GetNodesMap()
163 return _src2tgtNodes;
166 //=======================================================================
168 * \brief Returns already computed EDGEs
170 void getPrecomputedEdges( SMESH_MesherHelper& theHelper,
171 const TopoDS_Shape& theShape,
172 vector< TopoDS_Edge >& theEdges)
176 SMESHDS_Mesh* meshDS = theHelper.GetMeshDS();
179 TopTools_IndexedMapOfShape edges;
180 TopExp::MapShapes( theShape, TopAbs_EDGE, edges );
181 for ( int iE = 1; iE <= edges.Extent(); ++iE )
183 const TopoDS_Shape edge = edges( iE );
184 if (( ! ( sm = meshDS->MeshElements( edge ))) ||
185 ( sm->NbElements() == 0 ))
188 // there must not be FACEs meshed with triangles and sharing a computed EDGE
189 // as the precomputed EDGEs are used for propagation other to 'vertical' EDGEs
190 bool faceFound = false;
191 PShapeIteratorPtr faceIt =
192 theHelper.GetAncestors( edge, *theHelper.GetMesh(), TopAbs_FACE );
193 while ( const TopoDS_Shape* face = faceIt->next() )
195 if (( sm = meshDS->MeshElements( *face )) &&
196 ( sm->NbElements() > 0 ) &&
197 ( !theHelper.IsSameElemGeometry( sm, SMDSGeom_QUADRANGLE ) ))
203 theEdges.push_back( TopoDS::Edge( edge ));
207 //================================================================================
209 * \brief Make \a botE be the BOTTOM_SIDE of \a quad.
210 * Return false if the BOTTOM_SIDE is composite
212 //================================================================================
214 bool setBottomEdge( const TopoDS_Edge& botE,
215 FaceQuadStruct::Ptr& quad,
216 const TopoDS_Shape& face)
218 quad->side[ QUAD_TOP_SIDE ].grid->Reverse();
219 quad->side[ QUAD_LEFT_SIDE ].grid->Reverse();
221 bool isComposite = false;
222 for ( size_t i = 0; i < quad->side.size(); ++i )
224 StdMeshers_FaceSidePtr quadSide = quad->side[i];
225 for ( int iE = 0; iE < quadSide->NbEdges(); ++iE )
226 if ( botE.IsSame( quadSide->Edge( iE )))
228 if ( quadSide->NbEdges() > 1 )
229 isComposite = true; //return false;
231 i = quad->side.size(); // to quit from the outer loop
235 if ( edgeIndex != QUAD_BOTTOM_SIDE )
236 quad->shift( quad->side.size() - edgeIndex, /*keepUnitOri=*/false );
238 quad->face = TopoDS::Face( face );
243 //================================================================================
245 * \brief Return iterator pointing to node column for the given parameter
246 * \param columnsMap - node column map
247 * \param parameter - parameter
248 * \retval TParam2ColumnMap::iterator - result
250 * it returns closest left column
252 //================================================================================
254 TParam2ColumnIt getColumn( const TParam2ColumnMap* columnsMap,
255 const double parameter )
257 TParam2ColumnIt u_col = columnsMap->upper_bound( parameter );
258 if ( u_col != columnsMap->begin() )
260 return u_col; // return left column
263 //================================================================================
265 * \brief Return nodes around given parameter and a ratio
266 * \param column - node column
267 * \param param - parameter
268 * \param node1 - lower node
269 * \param node2 - upper node
270 * \retval double - ratio
272 //================================================================================
274 double getRAndNodes( const TNodeColumn* column,
276 const SMDS_MeshNode* & node1,
277 const SMDS_MeshNode* & node2)
279 if ( param >= 1.0 || column->size() == 1) {
280 node1 = node2 = column->back();
284 int i = int( param * ( column->size() - 1 ));
285 double u0 = double( i )/ double( column->size() - 1 );
286 double r = ( param - u0 ) * ( column->size() - 1 );
288 node1 = (*column)[ i ];
289 node2 = (*column)[ i + 1];
293 //================================================================================
295 * \brief Compute boundary parameters of face parts
296 * \param nbParts - nb of parts to split columns into
297 * \param columnsMap - node columns of the face to split
298 * \param params - computed parameters
300 //================================================================================
302 void splitParams( const int nbParts,
303 const TParam2ColumnMap* columnsMap,
304 vector< double > & params)
307 params.reserve( nbParts + 1 );
308 TParam2ColumnIt last_par_col = --columnsMap->end();
309 double par = columnsMap->begin()->first; // 0.
310 double parLast = last_par_col->first;
311 params.push_back( par );
312 for ( int i = 0; i < nbParts - 1; ++ i )
314 double partSize = ( parLast - par ) / double ( nbParts - i );
315 TParam2ColumnIt par_col = getColumn( columnsMap, par + partSize );
316 if ( par_col->first == par ) {
318 if ( par_col == last_par_col ) {
319 while ( i < nbParts - 1 )
320 params.push_back( par + partSize * i++ );
324 par = par_col->first;
325 params.push_back( par );
327 params.push_back( parLast ); // 1.
330 //================================================================================
332 * \brief Return coordinate system for z-th layer of nodes
334 //================================================================================
336 gp_Ax2 getLayerCoordSys(const int z,
337 const vector< const TNodeColumn* >& columns,
340 // gravity center of a layer
343 for ( int i = 0; i < columns.size(); ++i )
345 O += gpXYZ( (*columns[ i ])[ z ]);
346 if ( vertexCol < 0 &&
347 columns[ i ]->front()->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX )
354 int iPrev = columns.size()-1;
355 for ( int i = 0; i < columns.size(); ++i )
357 gp_Vec v1( O, gpXYZ( (*columns[ iPrev ])[ z ]));
358 gp_Vec v2( O, gpXYZ( (*columns[ i ] )[ z ]));
363 if ( vertexCol >= 0 )
365 O = gpXYZ( (*columns[ vertexCol ])[ z ]);
367 if ( xColumn < 0 || xColumn >= columns.size() )
369 // select a column for X dir
371 for ( int i = 0; i < columns.size(); ++i )
373 double dist = ( O - gpXYZ((*columns[ i ])[ z ])).SquareModulus();
374 if ( dist > maxDist )
383 gp_Vec X( O, gpXYZ( (*columns[ xColumn ])[ z ]));
385 return gp_Ax2( O, Z, X);
388 //================================================================================
390 * \brief Removes submeshes that are or can be meshed with regular grid from given list
391 * \retval int - nb of removed submeshes
393 //================================================================================
395 int removeQuasiQuads(list< SMESH_subMesh* >& notQuadSubMesh,
396 SMESH_MesherHelper* helper,
397 StdMeshers_Quadrangle_2D* quadAlgo)
400 //SMESHDS_Mesh* mesh = notQuadSubMesh.front()->GetFather()->GetMeshDS();
401 list< SMESH_subMesh* >::iterator smIt = notQuadSubMesh.begin();
402 while ( smIt != notQuadSubMesh.end() )
404 SMESH_subMesh* faceSm = *smIt;
405 SMESHDS_SubMesh* faceSmDS = faceSm->GetSubMeshDS();
406 int nbQuads = faceSmDS ? faceSmDS->NbElements() : 0;
409 toRemove = helper->IsStructured( faceSm );
411 toRemove = quadAlgo->CheckNbEdges( *helper->GetMesh(),
412 faceSm->GetSubShape() );
413 nbRemoved += toRemove;
415 smIt = notQuadSubMesh.erase( smIt );
423 //================================================================================
425 * \brief Return and angle between two EDGEs
426 * \return double - the angle normalized so that
433 //================================================================================
435 // double normAngle(const TopoDS_Edge & E1, const TopoDS_Edge & E2, const TopoDS_Face & F)
437 // return SMESH_MesherHelper::GetAngle( E1, E2, F ) / ( 0.5 * M_PI );
440 //================================================================================
442 * Consider continuous straight EDGES as one side - mark them to unite
444 //================================================================================
446 int countNbSides( const Prism_3D::TPrismTopo & thePrism,
447 vector<int> & nbUnitePerEdge,
448 vector< double > & edgeLength)
450 int nbEdges = thePrism.myNbEdgesInWires.front(); // nb outer edges
451 int nbSides = nbEdges;
454 list< TopoDS_Edge >::const_iterator edgeIt = thePrism.myBottomEdges.begin();
455 std::advance( edgeIt, nbEdges-1 );
456 TopoDS_Edge prevE = *edgeIt;
457 // bool isPrevStraight = SMESH_Algo::IsStraight( prevE );
458 int iPrev = nbEdges - 1;
460 int iUnite = -1; // the first of united EDGEs
462 // analyse angles between EDGEs
464 vector< bool > isCorner( nbEdges );
465 edgeIt = thePrism.myBottomEdges.begin();
466 for ( int iE = 0; iE < nbEdges; ++iE, ++edgeIt )
468 const TopoDS_Edge& curE = *edgeIt;
469 edgeLength[ iE ] = SMESH_Algo::EdgeLength( curE );
471 // double normAngle = normAngle( prevE, curE, thePrism.myBottom );
472 // isCorner[ iE ] = false;
473 // if ( normAngle < 2.0 )
475 // if ( normAngle < 0.001 ) // straight or obtuse angle
477 // // unite EDGEs in order not to put a corner of the unit quadrangle at this VERTEX
480 // nbUnitePerEdge[ iUnite ]++;
481 // nbUnitePerEdge[ iE ] = -1;
486 // isCorner[ iE ] = true;
496 // define which of corners to put on a side of the unit quadrangle
498 // edgeIt = thePrism.myBottomEdges.begin();
499 // for ( int iE = 0; iE < nbEdges; ++iE, ++edgeIt )
501 // const TopoDS_Edge& curE = *edgeIt;
502 // edgeLength[ iE ] = SMESH_Algo::EdgeLength( curE );
504 // const bool isCurStraight = SMESH_Algo::IsStraight( curE );
505 // if ( isPrevStraight && isCurStraight && SMESH_Algo::IsContinuous( prevE, curE ))
509 // nbUnitePerEdge[ iUnite ]++;
510 // nbUnitePerEdge[ iE ] = -1;
518 // isPrevStraight = isCurStraight;
525 void pointsToPython(const std::vector<gp_XYZ>& p)
528 for ( int i = SMESH_Block::ID_V000; i < p.size(); ++i )
530 cout << "mesh.AddNode( " << p[i].X() << ", "<< p[i].Y() << ", "<< p[i].Z() << ") # " << i <<" " ;
531 SMESH_Block::DumpShapeID( i, cout ) << endl;
537 //=======================================================================
538 //function : StdMeshers_Prism_3D
540 //=======================================================================
542 StdMeshers_Prism_3D::StdMeshers_Prism_3D(int hypId, int studyId, SMESH_Gen* gen)
543 :SMESH_3D_Algo(hypId, studyId, gen)
546 _shapeType = (1 << TopAbs_SOLID); // 1 bit per shape type
547 _onlyUnaryInput = false; // mesh all SOLIDs at once
548 _requireDiscreteBoundary = false; // mesh FACEs and EDGEs by myself
549 _supportSubmeshes = true; // "source" FACE must be meshed by other algo
550 _neededLowerHyps[ 1 ] = true; // suppress warning on hiding a global 1D algo
551 _neededLowerHyps[ 2 ] = true; // suppress warning on hiding a global 2D algo
553 //myProjectTriangles = false;
554 mySetErrorToSM = true; // to pass an error to a sub-mesh of a current solid or not
557 //================================================================================
561 //================================================================================
563 StdMeshers_Prism_3D::~StdMeshers_Prism_3D()
566 //=======================================================================
567 //function : CheckHypothesis
569 //=======================================================================
571 bool StdMeshers_Prism_3D::CheckHypothesis(SMESH_Mesh& aMesh,
572 const TopoDS_Shape& aShape,
573 SMESH_Hypothesis::Hypothesis_Status& aStatus)
575 // Check shape geometry
577 aStatus = SMESH_Hypothesis::HYP_BAD_GEOMETRY;
579 // find not quadrangle faces
580 list< TopoDS_Shape > notQuadFaces;
581 int nbEdge, nbWire, nbFace = 0;
582 TopExp_Explorer exp( aShape, TopAbs_FACE );
583 for ( ; exp.More(); exp.Next() ) {
585 const TopoDS_Shape& face = exp.Current();
586 nbEdge = NSProjUtils::Count( face, TopAbs_EDGE, 0 );
587 nbWire = NSProjUtils::Count( face, TopAbs_WIRE, 0 );
588 if ( nbEdge!= 4 || nbWire!= 1 ) {
589 if ( !notQuadFaces.empty() ) {
590 if ( NSProjUtils::Count( notQuadFaces.back(), TopAbs_EDGE, 0 ) != nbEdge ||
591 NSProjUtils::Count( notQuadFaces.back(), TopAbs_WIRE, 0 ) != nbWire )
592 RETURN_BAD_RESULT("Different not quad faces");
594 notQuadFaces.push_back( face );
597 if ( !notQuadFaces.empty() )
599 if ( notQuadFaces.size() != 2 )
600 RETURN_BAD_RESULT("Bad nb not quad faces: " << notQuadFaces.size());
602 // check total nb faces
603 nbEdge = NSProjUtils::Count( notQuadFaces.back(), TopAbs_EDGE, 0 );
604 if ( nbFace != nbEdge + 2 )
605 RETURN_BAD_RESULT("Bad nb of faces: " << nbFace << " but must be " << nbEdge + 2);
609 aStatus = SMESH_Hypothesis::HYP_OK;
613 //=======================================================================
615 //purpose : Compute mesh on a COMPOUND of SOLIDs
616 //=======================================================================
618 bool StdMeshers_Prism_3D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
620 SMESH_MesherHelper helper( theMesh );
623 int nbSolids = helper.Count( theShape, TopAbs_SOLID, /*skipSame=*/false );
627 TopTools_IndexedDataMapOfShapeListOfShape faceToSolids;
628 TopExp::MapShapesAndAncestors( theShape, TopAbs_FACE, TopAbs_SOLID, faceToSolids );
630 // look for meshed FACEs ("source" FACEs) that must be prism bottoms
631 list< TopoDS_Face > meshedFaces, notQuadMeshedFaces, notQuadFaces;
632 const bool meshHasQuads = ( theMesh.NbQuadrangles() > 0 );
633 //StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this );
634 for ( int iF = 1; iF <= faceToSolids.Extent(); ++iF )
636 const TopoDS_Face& face = TopoDS::Face( faceToSolids.FindKey( iF ));
637 SMESH_subMesh* faceSM = theMesh.GetSubMesh( face );
638 if ( !faceSM->IsEmpty() )
640 if ( !meshHasQuads ||
641 !helper.IsSameElemGeometry( faceSM->GetSubMeshDS(), SMDSGeom_QUADRANGLE ) ||
642 !helper.IsStructured( faceSM )
644 notQuadMeshedFaces.push_front( face );
645 else if ( myHelper->Count( face, TopAbs_EDGE, /*ignoreSame=*/false ) != 4 )
646 meshedFaces.push_front( face );
648 meshedFaces.push_back( face );
650 // not add not quadrilateral FACE as we can't compute it
651 // else if ( !quadAlgo->CheckNbEdges( theMesh, face ))
652 // // not add not quadrilateral FACE as it can be a prism side
653 // // else if ( myHelper->Count( face, TopAbs_EDGE, /*ignoreSame=*/false ) != 4 )
655 // notQuadFaces.push_back( face );
658 // notQuadFaces are of medium priority, put them before ordinary meshed faces
659 meshedFaces.splice( meshedFaces.begin(), notQuadFaces );
660 // notQuadMeshedFaces are of highest priority, put them before notQuadFaces
661 meshedFaces.splice( meshedFaces.begin(), notQuadMeshedFaces );
663 Prism_3D::TPrismTopo prism;
665 bool selectBottom = meshedFaces.empty();
669 TopoDS_Shape solid = TopExp_Explorer( theShape, TopAbs_SOLID ).Current();
670 if ( !meshedFaces.empty() )
671 prism.myBottom = meshedFaces.front();
672 return ( initPrism( prism, solid, selectBottom ) &&
676 // find propagation chains from already computed EDGEs
677 vector< TopoDS_Edge > computedEdges;
678 getPrecomputedEdges( helper, theShape, computedEdges );
679 myPropagChains = new TopTools_IndexedMapOfShape[ computedEdges.size() + 1 ];
680 SMESHUtils::ArrayDeleter< TopTools_IndexedMapOfShape > pcDel( myPropagChains );
681 for ( size_t i = 0, nb = 0; i < computedEdges.size(); ++i )
683 StdMeshers_ProjectionUtils::GetPropagationEdge( &theMesh, TopoDS_Edge(),
684 computedEdges[i], myPropagChains + nb );
685 if ( myPropagChains[ nb ].Extent() < 2 ) // an empty map is a termination sign
686 myPropagChains[ nb ].Clear();
691 TopTools_MapOfShape meshedSolids;
692 list< Prism_3D::TPrismTopo > meshedPrism;
693 list< TopoDS_Face > suspectSourceFaces;
694 TopTools_ListIteratorOfListOfShape solidIt;
696 while ( meshedSolids.Extent() < nbSolids )
698 if ( _computeCanceled )
699 return toSM( error( SMESH_ComputeError::New(COMPERR_CANCELED)));
701 // compute prisms having avident computed source FACE
702 while ( !meshedFaces.empty() )
704 TopoDS_Face face = meshedFaces.front();
705 meshedFaces.pop_front();
706 TopTools_ListOfShape& solidList = faceToSolids.ChangeFromKey( face );
707 while ( !solidList.IsEmpty() )
709 TopoDS_Shape solid = solidList.First();
710 solidList.RemoveFirst();
711 if ( meshedSolids.Add( solid ))
714 prism.myBottom = face;
715 if ( !initPrism( prism, solid, selectBottom ) ||
719 SMESHDS_SubMesh* smDS = theMesh.GetMeshDS()->MeshElements( prism.myTop );
720 if ( !myHelper->IsSameElemGeometry( smDS, SMDSGeom_QUADRANGLE ))
722 meshedFaces.push_front( prism.myTop );
726 suspectSourceFaces.push_back( prism.myTop );
728 meshedPrism.push_back( prism );
732 if ( meshedSolids.Extent() == nbSolids )
735 // below in the loop we try to find source FACEs somehow
737 // project mesh from source FACEs of computed prisms to
738 // prisms sharing wall FACEs
739 list< Prism_3D::TPrismTopo >::iterator prismIt = meshedPrism.begin();
740 for ( ; prismIt != meshedPrism.end(); ++prismIt )
742 for ( size_t iW = 0; iW < prismIt->myWallQuads.size(); ++iW )
744 Prism_3D::TQuadList::iterator wQuad = prismIt->myWallQuads[iW].begin();
745 for ( ; wQuad != prismIt->myWallQuads[iW].end(); ++ wQuad )
747 const TopoDS_Face& wFace = (*wQuad)->face;
748 TopTools_ListOfShape& solidList = faceToSolids.ChangeFromKey( wFace );
749 solidIt.Initialize( solidList );
750 while ( solidIt.More() )
752 const TopoDS_Shape& solid = solidIt.Value();
753 if ( meshedSolids.Contains( solid )) {
754 solidList.Remove( solidIt );
755 continue; // already computed prism
757 if ( myHelper->IsBlock( solid )) {
759 continue; // too trivial
761 // find a source FACE of the SOLID: it's a FACE sharing a bottom EDGE with wFace
762 const TopoDS_Edge& wEdge = (*wQuad)->side[ QUAD_TOP_SIDE ].grid->Edge(0);
763 PShapeIteratorPtr faceIt = myHelper->GetAncestors( wEdge, *myHelper->GetMesh(),
765 while ( const TopoDS_Shape* f = faceIt->next() )
767 const TopoDS_Face& candidateF = TopoDS::Face( *f );
768 if ( candidateF.IsSame( wFace )) continue;
769 // select a source FACE: prismIt->myBottom or prismIt->myTop
770 TopoDS_Face sourceF = prismIt->myBottom;
771 for ( TopExp_Explorer v( prismIt->myTop, TopAbs_VERTEX ); v.More(); v.Next() )
772 if ( myHelper->IsSubShape( v.Current(), candidateF )) {
773 sourceF = prismIt->myTop;
777 prism.myBottom = candidateF;
778 mySetErrorToSM = false;
779 if ( !myHelper->IsSubShape( candidateF, prismIt->myShape3D ) &&
780 myHelper ->IsSubShape( candidateF, solid ) &&
781 !myHelper->GetMesh()->GetSubMesh( candidateF )->IsMeshComputed() &&
782 initPrism( prism, solid, /*selectBottom=*/false ) &&
783 !myHelper->GetMesh()->GetSubMesh( prism.myTop )->IsMeshComputed() &&
784 !myHelper->GetMesh()->GetSubMesh( prism.myBottom )->IsMeshComputed() &&
785 project2dMesh( sourceF, prism.myBottom ))
787 mySetErrorToSM = true;
788 if ( !compute( prism ))
790 SMESHDS_SubMesh* smDS = theMesh.GetMeshDS()->MeshElements( prism.myTop );
791 if ( !myHelper->IsSameElemGeometry( smDS, SMDSGeom_QUADRANGLE ))
793 meshedFaces.push_front( prism.myTop );
794 meshedFaces.push_front( prism.myBottom );
795 selectBottom = false;
797 meshedPrism.push_back( prism );
798 meshedSolids.Add( solid );
802 mySetErrorToSM = true;
804 if ( meshedSolids.Contains( solid ))
805 solidList.Remove( solidIt );
811 if ( !meshedFaces.empty() )
812 break; // to compute prisms with avident sources
815 if ( meshedFaces.empty() )
817 meshedFaces.splice( meshedFaces.end(), suspectSourceFaces );
821 // find FACEs with local 1D hyps, which has to be computed by now,
822 // or at least any computed FACEs
823 if ( meshedFaces.empty() )
826 for ( int iF = 1; iF <= faceToSolids.Extent(); ++iF )
828 const TopoDS_Face& face = TopoDS::Face( faceToSolids.FindKey( iF ));
829 const TopTools_ListOfShape& solidList = faceToSolids.FindFromKey( face );
830 if ( solidList.IsEmpty() ) continue;
831 SMESH_subMesh* faceSM = theMesh.GetSubMesh( face );
832 if ( !faceSM->IsEmpty() )
834 int nbFaces = faceSM->GetSubMeshDS()->NbElements();
835 if ( prevNbFaces < nbFaces )
837 if ( !meshedFaces.empty() ) meshedFaces.pop_back();
838 meshedFaces.push_back( face ); // lower priority
840 prevNbFaces = nbFaces;
845 bool allSubMeComputed = true;
846 SMESH_subMeshIteratorPtr smIt = faceSM->getDependsOnIterator(false,true);
847 while ( smIt->more() && allSubMeComputed )
848 allSubMeComputed = smIt->next()->IsMeshComputed();
849 if ( allSubMeComputed )
851 faceSM->ComputeStateEngine( SMESH_subMesh::COMPUTE );
852 if ( !faceSM->IsEmpty() ) {
853 meshedFaces.push_front( face ); // higher priority
858 faceSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
866 // TODO. there are other ways to find out the source FACE:
867 // propagation, topological similarity, ect.
869 // simply try to mesh all not meshed SOLIDs
870 if ( meshedFaces.empty() )
872 for ( TopExp_Explorer solid( theShape, TopAbs_SOLID ); solid.More(); solid.Next() )
874 mySetErrorToSM = false;
876 if ( !meshedSolids.Contains( solid.Current() ) &&
877 initPrism( prism, solid.Current() ))
879 mySetErrorToSM = true;
880 if ( !compute( prism ))
882 meshedFaces.push_front( prism.myTop );
883 meshedFaces.push_front( prism.myBottom );
884 meshedPrism.push_back( prism );
885 meshedSolids.Add( solid.Current() );
888 mySetErrorToSM = true;
892 if ( meshedFaces.empty() ) // set same error to 10 not-computed solids
894 SMESH_ComputeErrorPtr err = SMESH_ComputeError::New
895 ( COMPERR_BAD_INPUT_MESH, "No meshed source face found", this );
897 const int maxNbErrors = 10; // limit nb errors not to overload the Compute dialog
898 TopExp_Explorer solid( theShape, TopAbs_SOLID );
899 for ( int i = 0; ( i < maxNbErrors && solid.More() ); ++i, solid.Next() )
900 if ( !meshedSolids.Contains( solid.Current() ))
902 SMESH_subMesh* sm = theMesh.GetSubMesh( solid.Current() );
903 sm->GetComputeError() = err;
911 //================================================================================
913 * \brief Find wall faces by bottom edges
915 //================================================================================
917 bool StdMeshers_Prism_3D::getWallFaces( Prism_3D::TPrismTopo & thePrism,
918 const int totalNbFaces)
920 thePrism.myWallQuads.clear();
922 SMESH_Mesh* mesh = myHelper->GetMesh();
924 StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
926 TopTools_MapOfShape faceMap;
927 TopTools_IndexedDataMapOfShapeListOfShape edgeToFaces;
928 TopExp::MapShapesAndAncestors( thePrism.myShape3D,
929 TopAbs_EDGE, TopAbs_FACE, edgeToFaces );
931 // ------------------------------
932 // Get the 1st row of wall FACEs
933 // ------------------------------
935 list< TopoDS_Edge >::iterator edge = thePrism.myBottomEdges.begin();
936 std::list< int >::iterator nbE = thePrism.myNbEdgesInWires.begin();
939 while ( edge != thePrism.myBottomEdges.end() )
942 if ( BRep_Tool::Curve( *edge, f,l ).IsNull() )
944 edge = thePrism.myBottomEdges.erase( edge );
950 TopTools_ListIteratorOfListOfShape faceIt( edgeToFaces.FindFromKey( *edge ));
951 for ( ; faceIt.More(); faceIt.Next() )
953 const TopoDS_Face& face = TopoDS::Face( faceIt.Value() );
954 if ( !thePrism.myBottom.IsSame( face ))
956 Prism_3D::TQuadList quadList( 1, quadAlgo->CheckNbEdges( *mesh, face ));
957 if ( !quadList.back() )
958 return toSM( error(TCom("Side face #") << shapeID( face )
959 << " not meshable with quadrangles"));
960 bool isCompositeBase = ! setBottomEdge( *edge, quadList.back(), face );
961 if ( isCompositeBase )
963 // it's OK if all EDGEs of the bottom side belongs to the bottom FACE
964 StdMeshers_FaceSidePtr botSide = quadList.back()->side[ QUAD_BOTTOM_SIDE ];
965 for ( int iE = 0; iE < botSide->NbEdges(); ++iE )
966 if ( !myHelper->IsSubShape( botSide->Edge(iE), thePrism.myBottom ))
967 return toSM( error(TCom("Composite 'horizontal' edges are not supported")));
969 if ( faceMap.Add( face ))
970 thePrism.myWallQuads.push_back( quadList );
983 // -------------------------
984 // Find the rest wall FACEs
985 // -------------------------
987 // Compose a vector of indixes of right neighbour FACE for each wall FACE
988 // that is not so evident in case of several WIREs in the bottom FACE
989 thePrism.myRightQuadIndex.clear();
990 for ( size_t i = 0; i < thePrism.myWallQuads.size(); ++i )
991 thePrism.myRightQuadIndex.push_back( i+1 );
992 list< int >::iterator nbEinW = thePrism.myNbEdgesInWires.begin();
993 for ( int iLeft = 0; nbEinW != thePrism.myNbEdgesInWires.end(); ++nbEinW )
995 thePrism.myRightQuadIndex[ iLeft + *nbEinW - 1 ] = iLeft; // 1st EDGE index of a current WIRE
999 while ( totalNbFaces - faceMap.Extent() > 2 )
1001 // find wall FACEs adjacent to each of wallQuads by the right side EDGE
1004 nbKnownFaces = faceMap.Extent();
1005 StdMeshers_FaceSidePtr rightSide, topSide; // sides of the quad
1006 for ( size_t i = 0; i < thePrism.myWallQuads.size(); ++i )
1008 rightSide = thePrism.myWallQuads[i].back()->side[ QUAD_RIGHT_SIDE ];
1009 for ( int iE = 0; iE < rightSide->NbEdges(); ++iE ) // rightSide can be composite
1011 const TopoDS_Edge & rightE = rightSide->Edge( iE );
1012 TopTools_ListIteratorOfListOfShape face( edgeToFaces.FindFromKey( rightE ));
1013 for ( ; face.More(); face.Next() )
1014 if ( faceMap.Add( face.Value() ))
1016 // a new wall FACE encountered, store it in thePrism.myWallQuads
1017 const int iRight = thePrism.myRightQuadIndex[i];
1018 topSide = thePrism.myWallQuads[ iRight ].back()->side[ QUAD_TOP_SIDE ];
1019 const TopoDS_Edge& newBotE = topSide->Edge(0);
1020 const TopoDS_Shape& newWallF = face.Value();
1021 thePrism.myWallQuads[ iRight ].push_back( quadAlgo->CheckNbEdges( *mesh, newWallF ));
1022 if ( !thePrism.myWallQuads[ iRight ].back() )
1023 return toSM( error(TCom("Side face #") << shapeID( newWallF ) <<
1024 " not meshable with quadrangles"));
1025 if ( ! setBottomEdge( newBotE, thePrism.myWallQuads[ iRight ].back(), newWallF ))
1026 return toSM( error(TCom("Composite 'horizontal' edges are not supported")));
1030 } while ( nbKnownFaces != faceMap.Extent() );
1032 // find wall FACEs adjacent to each of thePrism.myWallQuads by the top side EDGE
1033 if ( totalNbFaces - faceMap.Extent() > 2 )
1035 const int nbFoundWalls = faceMap.Extent();
1036 for ( size_t i = 0; i < thePrism.myWallQuads.size(); ++i )
1038 StdMeshers_FaceSidePtr topSide = thePrism.myWallQuads[i].back()->side[ QUAD_TOP_SIDE ];
1039 const TopoDS_Edge & topE = topSide->Edge( 0 );
1040 if ( topSide->NbEdges() > 1 )
1041 return toSM( error(COMPERR_BAD_SHAPE, TCom("Side face #") <<
1042 shapeID( thePrism.myWallQuads[i].back()->face )
1043 << " has a composite top edge"));
1044 TopTools_ListIteratorOfListOfShape faceIt( edgeToFaces.FindFromKey( topE ));
1045 for ( ; faceIt.More(); faceIt.Next() )
1046 if ( faceMap.Add( faceIt.Value() ))
1048 // a new wall FACE encountered, store it in wallQuads
1049 thePrism.myWallQuads[ i ].push_back( quadAlgo->CheckNbEdges( *mesh, faceIt.Value() ));
1050 if ( !thePrism.myWallQuads[ i ].back() )
1051 return toSM( error(TCom("Side face #") << shapeID( faceIt.Value() ) <<
1052 " not meshable with quadrangles"));
1053 if ( ! setBottomEdge( topE, thePrism.myWallQuads[ i ].back(), faceIt.Value() ))
1054 return toSM( error(TCom("Composite 'horizontal' edges are not supported")));
1055 if ( totalNbFaces - faceMap.Extent() == 2 )
1057 i = thePrism.myWallQuads.size(); // to quit from the outer loop
1062 if ( nbFoundWalls == faceMap.Extent() )
1063 return toSM( error("Failed to find wall faces"));
1066 } // while ( totalNbFaces - faceMap.Extent() > 2 )
1068 // ------------------
1069 // Find the top FACE
1070 // ------------------
1072 if ( thePrism.myTop.IsNull() )
1074 // now only top and bottom FACEs are not in the faceMap
1075 faceMap.Add( thePrism.myBottom );
1076 for ( TopExp_Explorer f( thePrism.myShape3D, TopAbs_FACE );f.More(); f.Next() )
1077 if ( !faceMap.Contains( f.Current() )) {
1078 thePrism.myTop = TopoDS::Face( f.Current() );
1081 if ( thePrism.myTop.IsNull() )
1082 return toSM( error("Top face not found"));
1085 // Check that the top FACE shares all the top EDGEs
1086 for ( size_t i = 0; i < thePrism.myWallQuads.size(); ++i )
1088 StdMeshers_FaceSidePtr topSide = thePrism.myWallQuads[i].back()->side[ QUAD_TOP_SIDE ];
1089 const TopoDS_Edge & topE = topSide->Edge( 0 );
1090 if ( !myHelper->IsSubShape( topE, thePrism.myTop ))
1091 return toSM( error( TCom("Wrong source face: #") << shapeID( thePrism.myBottom )));
1097 //=======================================================================
1098 //function : compute
1099 //purpose : Compute mesh on a SOLID
1100 //=======================================================================
1102 bool StdMeshers_Prism_3D::compute(const Prism_3D::TPrismTopo& thePrism)
1104 myHelper->IsQuadraticSubMesh( thePrism.myShape3D );
1105 if ( _computeCanceled )
1106 return toSM( error( SMESH_ComputeError::New(COMPERR_CANCELED)));
1108 // Assure the bottom is meshed
1109 SMESH_subMesh * botSM = myHelper->GetMesh()->GetSubMesh( thePrism.myBottom );
1110 if (( botSM->IsEmpty() ) &&
1111 ( ! botSM->GetAlgo() ||
1112 ! _gen->Compute( *botSM->GetFather(), botSM->GetSubShape(), /*shapeOnly=*/true )))
1113 return error( COMPERR_BAD_INPUT_MESH,
1114 TCom( "No mesher defined to compute the face #")
1115 << shapeID( thePrism.myBottom ));
1117 // Make all side FACEs of thePrism meshed with quads
1118 if ( !computeWalls( thePrism ))
1121 // Analyse mesh and geometry to find all block sub-shapes and submeshes
1122 // (after fixing IPAL52499 myBlock is used as a holder of boundary nodes
1123 // and for 2D projection in hard cases where StdMeshers_Projection_2D fails;
1124 // location of internal nodes is usually computed by StdMeshers_Sweeper)
1125 if ( !myBlock.Init( myHelper, thePrism ))
1126 return toSM( error( myBlock.GetError()));
1128 SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
1130 int volumeID = meshDS->ShapeToIndex( thePrism.myShape3D );
1132 // Try to get gp_Trsf to get all nodes from bottom ones
1133 vector<gp_Trsf> trsf;
1134 gp_Trsf bottomToTopTrsf;
1135 // if ( !myBlock.GetLayersTransformation( trsf, thePrism ))
1137 // else if ( !trsf.empty() )
1138 // bottomToTopTrsf = trsf.back();
1140 // To compute coordinates of a node inside a block, it is necessary to know
1141 // 1. normalized parameters of the node by which
1142 // 2. coordinates of node projections on all block sub-shapes are computed
1144 // So we fill projections on vertices at once as they are same for all nodes
1145 myShapeXYZ.resize( myBlock.NbSubShapes() );
1146 for ( int iV = SMESH_Block::ID_FirstV; iV < SMESH_Block::ID_FirstE; ++iV ) {
1147 myBlock.VertexPoint( iV, myShapeXYZ[ iV ]);
1148 SHOWYXZ("V point " <<iV << " ", myShapeXYZ[ iV ]);
1151 // Projections on the top and bottom faces are taken from nodes existing
1152 // on these faces; find correspondence between bottom and top nodes
1154 myBotToColumnMap.clear();
1155 if ( !assocOrProjBottom2Top( bottomToTopTrsf, thePrism ) ) // it also fills myBotToColumnMap
1159 // Create nodes inside the block
1161 // use transformation (issue 0020680, IPAL0052499)
1162 StdMeshers_Sweeper sweeper;
1164 bool allowHighBndError;
1168 // load boundary nodes into sweeper
1170 list< TopoDS_Edge >::const_iterator edge = thePrism.myBottomEdges.begin();
1171 for ( ; edge != thePrism.myBottomEdges.end(); ++edge )
1173 int edgeID = meshDS->ShapeToIndex( *edge );
1174 TParam2ColumnMap* u2col = const_cast<TParam2ColumnMap*>
1175 ( myBlock.GetParam2ColumnMap( edgeID, dummy ));
1176 TParam2ColumnMap::iterator u2colIt = u2col->begin();
1177 for ( ; u2colIt != u2col->end(); ++u2colIt )
1178 sweeper.myBndColumns.push_back( & u2colIt->second );
1180 // load node columns inside the bottom face
1181 TNode2ColumnMap::iterator bot_column = myBotToColumnMap.begin();
1182 for ( ; bot_column != myBotToColumnMap.end(); ++bot_column )
1183 sweeper.myIntColumns.push_back( & bot_column->second );
1185 tol = getSweepTolerance( thePrism );
1186 allowHighBndError = !isSimpleBottom( thePrism );
1189 if ( !myUseBlock && sweeper.ComputeNodes( *myHelper, tol, allowHighBndError ))
1192 else // use block approach
1194 // loop on nodes inside the bottom face
1195 Prism_3D::TNode prevBNode;
1196 TNode2ColumnMap::iterator bot_column = myBotToColumnMap.begin();
1197 for ( ; bot_column != myBotToColumnMap.end(); ++bot_column )
1199 const Prism_3D::TNode& tBotNode = bot_column->first; // bottom TNode
1200 if ( tBotNode.GetPositionType() != SMDS_TOP_FACE )
1201 continue; // node is not inside the FACE
1203 // column nodes; middle part of the column are zero pointers
1204 TNodeColumn& column = bot_column->second;
1206 gp_XYZ botParams, topParams;
1207 if ( !tBotNode.HasParams() )
1209 // compute bottom node parameters
1210 gp_XYZ paramHint(-1,-1,-1);
1211 if ( prevBNode.IsNeighbor( tBotNode ))
1212 paramHint = prevBNode.GetParams();
1213 if ( !myBlock.ComputeParameters( tBotNode.GetCoords(), tBotNode.ChangeParams(),
1214 ID_BOT_FACE, paramHint ))
1215 return toSM( error(TCom("Can't compute normalized parameters for node ")
1216 << tBotNode.myNode->GetID() << " on the face #"
1217 << myBlock.SubMesh( ID_BOT_FACE )->GetId() ));
1218 prevBNode = tBotNode;
1220 botParams = topParams = tBotNode.GetParams();
1221 topParams.SetZ( 1 );
1223 // compute top node parameters
1224 if ( column.size() > 2 ) {
1225 gp_Pnt topCoords = gpXYZ( column.back() );
1226 if ( !myBlock.ComputeParameters( topCoords, topParams, ID_TOP_FACE, topParams ))
1227 return toSM( error(TCom("Can't compute normalized parameters ")
1228 << "for node " << column.back()->GetID()
1229 << " on the face #"<< column.back()->getshapeId() ));
1232 else // top nodes are created by projection using parameters
1234 botParams = topParams = tBotNode.GetParams();
1235 topParams.SetZ( 1 );
1238 myShapeXYZ[ ID_BOT_FACE ] = tBotNode.GetCoords();
1239 myShapeXYZ[ ID_TOP_FACE ] = gpXYZ( column.back() );
1242 TNodeColumn::iterator columnNodes = column.begin();
1243 for ( int z = 0; columnNodes != column.end(); ++columnNodes, ++z)
1245 const SMDS_MeshNode* & node = *columnNodes;
1246 if ( node ) continue; // skip bottom or top node
1248 // params of a node to create
1249 double rz = (double) z / (double) ( column.size() - 1 );
1250 gp_XYZ params = botParams * ( 1 - rz ) + topParams * rz;
1252 // set coords on all faces and nodes
1253 const int nbSideFaces = 4;
1254 int sideFaceIDs[nbSideFaces] = { SMESH_Block::ID_Fx0z,
1255 SMESH_Block::ID_Fx1z,
1256 SMESH_Block::ID_F0yz,
1257 SMESH_Block::ID_F1yz };
1258 for ( int iF = 0; iF < nbSideFaces; ++iF )
1259 if ( !setFaceAndEdgesXYZ( sideFaceIDs[ iF ], params, z ))
1262 // compute coords for a new node
1264 if ( !SMESH_Block::ShellPoint( params, myShapeXYZ, coords ))
1265 return toSM( error("Can't compute coordinates by normalized parameters"));
1267 // if ( !meshDS->MeshElements( volumeID ) ||
1268 // meshDS->MeshElements( volumeID )->NbNodes() == 0 )
1269 // pointsToPython(myShapeXYZ);
1270 SHOWYXZ("TOPFacePoint ",myShapeXYZ[ ID_TOP_FACE]);
1271 SHOWYXZ("BOT Node "<< tBotNode.myNode->GetID(),gpXYZ(tBotNode.myNode));
1272 SHOWYXZ("ShellPoint ",coords);
1275 node = meshDS->AddNode( coords.X(), coords.Y(), coords.Z() );
1276 meshDS->SetNodeInVolume( node, volumeID );
1278 if ( _computeCanceled )
1281 } // loop on bottom nodes
1286 SMESHDS_SubMesh* smDS = myBlock.SubMeshDS( ID_BOT_FACE );
1287 if ( !smDS ) return toSM( error(COMPERR_BAD_INPUT_MESH, "Null submesh"));
1289 // loop on bottom mesh faces
1290 SMDS_ElemIteratorPtr faceIt = smDS->GetElements();
1291 while ( faceIt->more() )
1293 const SMDS_MeshElement* face = faceIt->next();
1294 if ( !face || face->GetType() != SMDSAbs_Face )
1297 // find node columns for each node
1298 int nbNodes = face->NbCornerNodes();
1299 vector< const TNodeColumn* > columns( nbNodes );
1300 for ( int i = 0; i < nbNodes; ++i )
1302 const SMDS_MeshNode* n = face->GetNode( i );
1303 if ( n->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
1304 TNode2ColumnMap::iterator bot_column = myBotToColumnMap.find( n );
1305 if ( bot_column == myBotToColumnMap.end() )
1306 return toSM( error(TCom("No nodes found above node ") << n->GetID() ));
1307 columns[ i ] = & bot_column->second;
1310 columns[ i ] = myBlock.GetNodeColumn( n );
1311 if ( !columns[ i ] )
1312 return toSM( error(TCom("No side nodes found above node ") << n->GetID() ));
1316 AddPrisms( columns, myHelper );
1318 } // loop on bottom mesh faces
1321 myBotToColumnMap.clear();
1327 //=======================================================================
1328 //function : computeWalls
1329 //purpose : Compute 2D mesh on walls FACEs of a prism
1330 //=======================================================================
1332 bool StdMeshers_Prism_3D::computeWalls(const Prism_3D::TPrismTopo& thePrism)
1334 SMESH_Mesh* mesh = myHelper->GetMesh();
1335 SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
1336 DBGOUT( endl << "COMPUTE Prism " << meshDS->ShapeToIndex( thePrism.myShape3D ));
1338 TProjction1dAlgo* projector1D = TProjction1dAlgo::instance( this );
1339 StdMeshers_Quadrangle_2D* quadAlgo = TQuadrangleAlgo::instance( this, myHelper );
1341 // SMESH_HypoFilter hyp1dFilter( SMESH_HypoFilter::IsAlgo(),/*not=*/true);
1342 // hyp1dFilter.And( SMESH_HypoFilter::HasDim( 1 ));
1343 // hyp1dFilter.And( SMESH_HypoFilter::IsMoreLocalThan( thePrism.myShape3D, *mesh ));
1345 // Discretize equally 'vertical' EDGEs
1346 // -----------------------------------
1347 // find source FACE sides for projection: either already computed ones or
1348 // the 'most composite' ones
1349 const size_t nbWalls = thePrism.myWallQuads.size();
1350 vector< int > wgt( nbWalls, 0 ); // "weight" of a wall
1351 for ( size_t iW = 0; iW != nbWalls; ++iW )
1353 Prism_3D::TQuadList::const_iterator quad = thePrism.myWallQuads[iW].begin();
1354 for ( ; quad != thePrism.myWallQuads[iW].end(); ++quad )
1356 StdMeshers_FaceSidePtr lftSide = (*quad)->side[ QUAD_LEFT_SIDE ];
1357 for ( int i = 0; i < lftSide->NbEdges(); ++i )
1360 const TopoDS_Edge& E = lftSide->Edge(i);
1361 if ( mesh->GetSubMesh( E )->IsMeshComputed() )
1364 wgt[ myHelper->WrapIndex( iW+1, nbWalls)] += 10;
1365 wgt[ myHelper->WrapIndex( iW-1, nbWalls)] += 10;
1367 // else if ( mesh->GetHypothesis( E, hyp1dFilter, true )) // local hypothesis!
1371 // in quadratic mesh, pass ignoreMediumNodes to quad sides
1372 if ( myHelper->GetIsQuadratic() )
1374 quad = thePrism.myWallQuads[iW].begin();
1375 for ( ; quad != thePrism.myWallQuads[iW].end(); ++quad )
1376 for ( int i = 0; i < NB_QUAD_SIDES; ++i )
1377 (*quad)->side[ i ].grid->SetIgnoreMediumNodes( true );
1380 multimap< int, int > wgt2quad;
1381 for ( size_t iW = 0; iW != nbWalls; ++iW )
1382 wgt2quad.insert( make_pair( wgt[ iW ], iW ));
1384 // Project 'vertical' EDGEs, from left to right
1385 multimap< int, int >::reverse_iterator w2q = wgt2quad.rbegin();
1386 for ( ; w2q != wgt2quad.rend(); ++w2q )
1388 const int iW = w2q->second;
1389 const Prism_3D::TQuadList& quads = thePrism.myWallQuads[ iW ];
1390 Prism_3D::TQuadList::const_iterator quad = quads.begin();
1391 for ( ; quad != quads.end(); ++quad )
1393 StdMeshers_FaceSidePtr rgtSide = (*quad)->side[ QUAD_RIGHT_SIDE ]; // tgt
1394 StdMeshers_FaceSidePtr lftSide = (*quad)->side[ QUAD_LEFT_SIDE ]; // src
1395 bool swapLeftRight = ( lftSide->NbSegments( /*update=*/true ) == 0 &&
1396 rgtSide->NbSegments( /*update=*/true ) > 0 );
1397 if ( swapLeftRight )
1398 std::swap( lftSide, rgtSide );
1400 // assure that all the source (left) EDGEs are meshed
1401 int nbSrcSegments = 0;
1402 for ( int i = 0; i < lftSide->NbEdges(); ++i )
1404 const TopoDS_Edge& srcE = lftSide->Edge(i);
1405 SMESH_subMesh* srcSM = mesh->GetSubMesh( srcE );
1406 if ( !srcSM->IsMeshComputed() ) {
1407 DBGOUT( "COMPUTE V edge " << srcSM->GetId() );
1408 TopoDS_Edge prpgSrcE = findPropagationSource( srcE );
1409 if ( !prpgSrcE.IsNull() ) {
1410 srcSM->ComputeSubMeshStateEngine( SMESH_subMesh::COMPUTE );
1411 projector1D->myHyp.SetSourceEdge( prpgSrcE );
1412 projector1D->Compute( *mesh, srcE );
1413 srcSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1416 srcSM->ComputeSubMeshStateEngine( SMESH_subMesh::COMPUTE );
1417 srcSM->ComputeStateEngine ( SMESH_subMesh::COMPUTE );
1419 if ( !srcSM->IsMeshComputed() )
1420 return toSM( error( "Can't compute 1D mesh" ));
1422 nbSrcSegments += srcSM->GetSubMeshDS()->NbElements();
1424 // check target EDGEs
1425 int nbTgtMeshed = 0, nbTgtSegments = 0;
1426 vector< bool > isTgtEdgeComputed( rgtSide->NbEdges() );
1427 for ( int i = 0; i < rgtSide->NbEdges(); ++i )
1429 const TopoDS_Edge& tgtE = rgtSide->Edge(i);
1430 SMESH_subMesh* tgtSM = mesh->GetSubMesh( tgtE );
1431 if ( !( isTgtEdgeComputed[ i ] = tgtSM->IsMeshComputed() )) {
1432 tgtSM->ComputeSubMeshStateEngine( SMESH_subMesh::COMPUTE );
1433 tgtSM->ComputeStateEngine ( SMESH_subMesh::COMPUTE );
1435 if ( tgtSM->IsMeshComputed() ) {
1437 nbTgtSegments += tgtSM->GetSubMeshDS()->NbElements();
1440 if ( rgtSide->NbEdges() == nbTgtMeshed ) // all tgt EDGEs meshed
1442 if ( nbTgtSegments != nbSrcSegments )
1444 bool badMeshRemoved = false;
1445 // remove just computed segments
1446 for ( int i = 0; i < rgtSide->NbEdges(); ++i )
1447 if ( !isTgtEdgeComputed[ i ])
1449 const TopoDS_Edge& tgtE = rgtSide->Edge(i);
1450 SMESH_subMesh* tgtSM = mesh->GetSubMesh( tgtE );
1451 tgtSM->ComputeStateEngine( SMESH_subMesh::CLEAN );
1452 badMeshRemoved = true;
1455 if ( !badMeshRemoved )
1457 for ( int i = 0; i < lftSide->NbEdges(); ++i )
1458 addBadInputElements( meshDS->MeshElements( lftSide->Edge( i )));
1459 for ( int i = 0; i < rgtSide->NbEdges(); ++i )
1460 addBadInputElements( meshDS->MeshElements( rgtSide->Edge( i )));
1461 return toSM( error( TCom("Different nb of segment on logically vertical edges #")
1462 << shapeID( lftSide->Edge(0) ) << " and #"
1463 << shapeID( rgtSide->Edge(0) ) << ": "
1464 << nbSrcSegments << " != " << nbTgtSegments ));
1467 else // if ( nbTgtSegments == nbSrcSegments )
1472 // Compute 'vertical projection'
1473 if ( nbTgtMeshed == 0 )
1475 // compute nodes on target VERTEXes
1476 const UVPtStructVec& srcNodeStr = lftSide->GetUVPtStruct();
1477 if ( srcNodeStr.size() == 0 )
1478 return toSM( error( TCom("Invalid node positions on edge #") <<
1479 shapeID( lftSide->Edge(0) )));
1480 vector< SMDS_MeshNode* > newNodes( srcNodeStr.size() );
1481 for ( int is2ndV = 0; is2ndV < 2; ++is2ndV )
1483 const TopoDS_Edge& E = rgtSide->Edge( is2ndV ? rgtSide->NbEdges()-1 : 0 );
1484 TopoDS_Vertex v = myHelper->IthVertex( is2ndV, E );
1485 mesh->GetSubMesh( v )->ComputeStateEngine( SMESH_subMesh::COMPUTE );
1486 const SMDS_MeshNode* n = SMESH_Algo::VertexNode( v, meshDS );
1487 newNodes[ is2ndV ? 0 : newNodes.size()-1 ] = (SMDS_MeshNode*) n;
1490 // compute nodes on target EDGEs
1491 DBGOUT( "COMPUTE V edge (proj) " << shapeID( lftSide->Edge(0)));
1492 rgtSide->Reverse(); // direct it same as the lftSide
1493 myHelper->SetElementsOnShape( false ); // myHelper holds the prism shape
1494 TopoDS_Edge tgtEdge;
1495 for ( size_t iN = 1; iN < srcNodeStr.size()-1; ++iN ) // add nodes
1497 gp_Pnt p = rgtSide->Value3d ( srcNodeStr[ iN ].normParam );
1498 double u = rgtSide->Parameter( srcNodeStr[ iN ].normParam, tgtEdge );
1499 newNodes[ iN ] = meshDS->AddNode( p.X(), p.Y(), p.Z() );
1500 meshDS->SetNodeOnEdge( newNodes[ iN ], tgtEdge, u );
1502 for ( size_t iN = 1; iN < srcNodeStr.size(); ++iN ) // add segments
1504 // find an EDGE to set a new segment
1505 std::pair<int, TopAbs_ShapeEnum> id2type =
1506 myHelper->GetMediumPos( newNodes[ iN-1 ], newNodes[ iN ] );
1507 if ( id2type.second != TopAbs_EDGE )
1509 // new nodes are on different EDGEs; put one of them on VERTEX
1510 const int edgeIndex = rgtSide->EdgeIndex( srcNodeStr[ iN-1 ].normParam );
1511 const double vertexParam = rgtSide->LastParameter( edgeIndex );
1512 TopoDS_Vertex vertex = rgtSide->LastVertex( edgeIndex );
1513 const SMDS_MeshNode* vn = SMESH_Algo::VertexNode( vertex, meshDS );
1514 const gp_Pnt p = BRep_Tool::Pnt( vertex );
1515 const int isPrev = ( Abs( srcNodeStr[ iN-1 ].normParam - vertexParam ) <
1516 Abs( srcNodeStr[ iN ].normParam - vertexParam ));
1517 meshDS->UnSetNodeOnShape( newNodes[ iN-isPrev ] );
1518 meshDS->SetNodeOnVertex ( newNodes[ iN-isPrev ], vertex );
1519 meshDS->MoveNode ( newNodes[ iN-isPrev ], p.X(), p.Y(), p.Z() );
1520 id2type.first = newNodes[ iN-(1-isPrev) ]->getshapeId();
1523 SMESH_MeshEditor::TListOfListOfNodes lln( 1, list< const SMDS_MeshNode* >() );
1524 lln.back().push_back ( vn );
1525 lln.back().push_front( newNodes[ iN-isPrev ] ); // to keep
1526 SMESH_MeshEditor( mesh ).MergeNodes( lln );
1529 SMDS_MeshElement* newEdge = myHelper->AddEdge( newNodes[ iN-1 ], newNodes[ iN ] );
1530 meshDS->SetMeshElementOnShape( newEdge, id2type.first );
1532 myHelper->SetElementsOnShape( true );
1533 for ( int i = 0; i < rgtSide->NbEdges(); ++i ) // update state of sub-meshes
1535 const TopoDS_Edge& E = rgtSide->Edge( i );
1536 SMESH_subMesh* tgtSM = mesh->GetSubMesh( E );
1537 tgtSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1540 // to continue projection from the just computed side as a source
1541 if ( !swapLeftRight && rgtSide->NbEdges() > 1 && w2q->second == iW )
1543 std::pair<int,int> wgt2quadKeyVal( w2q->first + 1, thePrism.myRightQuadIndex[ iW ]);
1544 wgt2quad.insert( wgt2quadKeyVal ); // it will be skipped by ++w2q
1545 wgt2quad.insert( wgt2quadKeyVal );
1546 w2q = wgt2quad.rbegin();
1551 // HOPE assigned hypotheses are OK, so that equal nb of segments will be generated
1552 //return toSM( error("Partial projection not implemented"));
1554 } // loop on quads of a composite wall side
1555 } // loop on the ordered wall sides
1559 for ( size_t iW = 0; iW != thePrism.myWallQuads.size(); ++iW )
1561 Prism_3D::TQuadList::const_iterator quad = thePrism.myWallQuads[iW].begin();
1562 for ( ; quad != thePrism.myWallQuads[iW].end(); ++quad )
1564 const TopoDS_Face& face = (*quad)->face;
1565 SMESH_subMesh* fSM = mesh->GetSubMesh( face );
1566 if ( ! fSM->IsMeshComputed() )
1568 // Top EDGEs must be projections from the bottom ones
1569 // to compute stuctured quad mesh on wall FACEs
1570 // ---------------------------------------------------
1571 const TopoDS_Edge& botE = (*quad)->side[ QUAD_BOTTOM_SIDE ].grid->Edge(0);
1572 const TopoDS_Edge& topE = (*quad)->side[ QUAD_TOP_SIDE ].grid->Edge(0);
1573 SMESH_subMesh* botSM = mesh->GetSubMesh( botE );
1574 SMESH_subMesh* topSM = mesh->GetSubMesh( topE );
1575 SMESH_subMesh* srcSM = botSM;
1576 SMESH_subMesh* tgtSM = topSM;
1577 srcSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1578 tgtSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1579 if ( !srcSM->IsMeshComputed() && tgtSM->IsMeshComputed() )
1580 std::swap( srcSM, tgtSM );
1582 if ( !srcSM->IsMeshComputed() )
1584 DBGOUT( "COMPUTE H edge " << srcSM->GetId());
1585 srcSM->ComputeSubMeshStateEngine( SMESH_subMesh::COMPUTE ); // nodes on VERTEXes
1586 srcSM->ComputeStateEngine( SMESH_subMesh::COMPUTE ); // segments on the EDGE
1589 if ( tgtSM->IsMeshComputed() &&
1590 tgtSM->GetSubMeshDS()->NbNodes() != srcSM->GetSubMeshDS()->NbNodes() )
1592 // the top EDGE is computed differently than the bottom one,
1593 // try to clear a wrong mesh
1594 bool isAdjFaceMeshed = false;
1595 PShapeIteratorPtr fIt = myHelper->GetAncestors( tgtSM->GetSubShape(),
1596 *mesh, TopAbs_FACE );
1597 while ( const TopoDS_Shape* f = fIt->next() )
1598 if (( isAdjFaceMeshed = mesh->GetSubMesh( *f )->IsMeshComputed() ))
1600 if ( isAdjFaceMeshed )
1601 return toSM( error( TCom("Different nb of segment on logically horizontal edges #")
1602 << shapeID( botE ) << " and #"
1603 << shapeID( topE ) << ": "
1604 << tgtSM->GetSubMeshDS()->NbElements() << " != "
1605 << srcSM->GetSubMeshDS()->NbElements() ));
1606 tgtSM->ComputeStateEngine( SMESH_subMesh::CLEAN );
1608 if ( !tgtSM->IsMeshComputed() )
1610 // compute nodes on VERTEXes
1611 SMESH_subMeshIteratorPtr smIt = tgtSM->getDependsOnIterator(/*includeSelf=*/false);
1612 while ( smIt->more() )
1613 smIt->next()->ComputeStateEngine( SMESH_subMesh::COMPUTE );
1615 DBGOUT( "COMPUTE H edge (proj) " << tgtSM->GetId());
1616 projector1D->myHyp.SetSourceEdge( TopoDS::Edge( srcSM->GetSubShape() ));
1617 projector1D->InitComputeError();
1618 bool ok = projector1D->Compute( *mesh, tgtSM->GetSubShape() );
1621 SMESH_ComputeErrorPtr err = projector1D->GetComputeError();
1622 if ( err->IsOK() ) err->myName = COMPERR_ALGO_FAILED;
1623 tgtSM->GetComputeError() = err;
1627 tgtSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1630 // Compute quad mesh on wall FACEs
1631 // -------------------------------
1633 // make all EDGES meshed
1634 fSM->ComputeSubMeshStateEngine( SMESH_subMesh::COMPUTE );
1635 if ( !fSM->SubMeshesComputed() )
1636 return toSM( error( COMPERR_BAD_INPUT_MESH,
1637 "Not all edges have valid algorithm and hypothesis"));
1639 quadAlgo->InitComputeError();
1640 DBGOUT( "COMPUTE Quad face " << fSM->GetId());
1641 bool ok = quadAlgo->Compute( *mesh, face );
1642 fSM->GetComputeError() = quadAlgo->GetComputeError();
1645 fSM->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1647 if ( myHelper->GetIsQuadratic() )
1649 // fill myHelper with medium nodes built by quadAlgo
1650 SMDS_ElemIteratorPtr fIt = fSM->GetSubMeshDS()->GetElements();
1651 while ( fIt->more() )
1652 myHelper->AddTLinks( dynamic_cast<const SMDS_MeshFace*>( fIt->next() ));
1660 //=======================================================================
1662 * \brief Returns a source EDGE of propagation to a given EDGE
1664 //=======================================================================
1666 TopoDS_Edge StdMeshers_Prism_3D::findPropagationSource( const TopoDS_Edge& E )
1668 if ( myPropagChains )
1669 for ( size_t i = 0; !myPropagChains[i].IsEmpty(); ++i )
1670 if ( myPropagChains[i].Contains( E ))
1671 return TopoDS::Edge( myPropagChains[i].FindKey( 1 ));
1673 return TopoDS_Edge();
1676 //=======================================================================
1677 //function : Evaluate
1679 //=======================================================================
1681 bool StdMeshers_Prism_3D::Evaluate(SMESH_Mesh& theMesh,
1682 const TopoDS_Shape& theShape,
1683 MapShapeNbElems& aResMap)
1685 if ( theShape.ShapeType() == TopAbs_COMPOUND )
1688 for ( TopoDS_Iterator it( theShape ); it.More(); it.Next() )
1689 ok &= Evaluate( theMesh, it.Value(), aResMap );
1692 SMESH_MesherHelper helper( theMesh );
1694 myHelper->SetSubShape( theShape );
1696 // find face contains only triangles
1697 vector < SMESH_subMesh * >meshFaces;
1698 TopTools_SequenceOfShape aFaces;
1699 int NumBase = 0, i = 0, NbQFs = 0;
1700 for (TopExp_Explorer exp(theShape, TopAbs_FACE); exp.More(); exp.Next()) {
1702 aFaces.Append(exp.Current());
1703 SMESH_subMesh *aSubMesh = theMesh.GetSubMesh(exp.Current());
1704 meshFaces.push_back(aSubMesh);
1705 MapShapeNbElemsItr anIt = aResMap.find(meshFaces[i-1]);
1706 if( anIt==aResMap.end() )
1707 return toSM( error( "Submesh can not be evaluated"));
1709 std::vector<int> aVec = (*anIt).second;
1710 int nbtri = Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
1711 int nbqua = Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
1712 if( nbtri==0 && nbqua>0 ) {
1721 std::vector<int> aResVec(SMDSEntity_Last);
1722 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
1723 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1724 aResMap.insert(std::make_pair(sm,aResVec));
1725 return toSM( error( "Submesh can not be evaluated" ));
1728 if(NumBase==0) NumBase = 1; // only quads => set 1 faces as base
1730 // find number of 1d elems for base face
1732 TopTools_MapOfShape Edges1;
1733 for (TopExp_Explorer exp(aFaces.Value(NumBase), TopAbs_EDGE); exp.More(); exp.Next()) {
1734 Edges1.Add(exp.Current());
1735 SMESH_subMesh *sm = theMesh.GetSubMesh(exp.Current());
1737 MapShapeNbElemsItr anIt = aResMap.find(sm);
1738 if( anIt == aResMap.end() ) continue;
1739 std::vector<int> aVec = (*anIt).second;
1740 nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
1743 // find face opposite to base face
1745 for(i=1; i<=6; i++) {
1746 if(i==NumBase) continue;
1747 bool IsOpposite = true;
1748 for(TopExp_Explorer exp(aFaces.Value(i), TopAbs_EDGE); exp.More(); exp.Next()) {
1749 if( Edges1.Contains(exp.Current()) ) {
1759 // find number of 2d elems on side faces
1761 for(i=1; i<=6; i++) {
1762 if( i==OppNum || i==NumBase ) continue;
1763 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[i-1] );
1764 if( anIt == aResMap.end() ) continue;
1765 std::vector<int> aVec = (*anIt).second;
1766 nb2d += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
1769 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[NumBase-1] );
1770 std::vector<int> aVec = (*anIt).second;
1771 bool IsQuadratic = (aVec[SMDSEntity_Quad_Triangle]>aVec[SMDSEntity_Triangle]) ||
1772 (aVec[SMDSEntity_Quad_Quadrangle]>aVec[SMDSEntity_Quadrangle]);
1773 int nb2d_face0_3 = Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
1774 int nb2d_face0_4 = Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
1775 int nb0d_face0 = aVec[SMDSEntity_Node];
1776 int nb1d_face0_int = ( nb2d_face0_3*3 + nb2d_face0_4*4 - nb1d ) / 2;
1778 std::vector<int> aResVec(SMDSEntity_Last);
1779 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
1781 aResVec[SMDSEntity_Quad_Penta] = nb2d_face0_3 * ( nb2d/nb1d );
1782 aResVec[SMDSEntity_Quad_Hexa] = nb2d_face0_4 * ( nb2d/nb1d );
1783 aResVec[SMDSEntity_Node] = nb0d_face0 * ( 2*nb2d/nb1d - 1 ) - nb1d_face0_int * nb2d/nb1d;
1786 aResVec[SMDSEntity_Node] = nb0d_face0 * ( nb2d/nb1d - 1 );
1787 aResVec[SMDSEntity_Penta] = nb2d_face0_3 * ( nb2d/nb1d );
1788 aResVec[SMDSEntity_Hexa] = nb2d_face0_4 * ( nb2d/nb1d );
1790 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1791 aResMap.insert(std::make_pair(sm,aResVec));
1796 //================================================================================
1798 * \brief Create prisms
1799 * \param columns - columns of nodes generated from nodes of a mesh face
1800 * \param helper - helper initialized by mesh and shape to add prisms to
1802 //================================================================================
1804 void StdMeshers_Prism_3D::AddPrisms( vector<const TNodeColumn*> & columns,
1805 SMESH_MesherHelper* helper)
1807 int nbNodes = columns.size();
1808 int nbZ = columns[0]->size();
1809 if ( nbZ < 2 ) return;
1811 // find out orientation
1812 bool isForward = true;
1813 SMDS_VolumeTool vTool;
1815 switch ( nbNodes ) {
1817 SMDS_VolumeOfNodes tmpPenta ( (*columns[0])[z-1], // bottom
1820 (*columns[0])[z], // top
1823 vTool.Set( &tmpPenta );
1824 isForward = vTool.IsForward();
1828 SMDS_VolumeOfNodes tmpHex( (*columns[0])[z-1], (*columns[1])[z-1], // bottom
1829 (*columns[2])[z-1], (*columns[3])[z-1],
1830 (*columns[0])[z], (*columns[1])[z], // top
1831 (*columns[2])[z], (*columns[3])[z] );
1832 vTool.Set( &tmpHex );
1833 isForward = vTool.IsForward();
1837 const int di = (nbNodes+1) / 3;
1838 SMDS_VolumeOfNodes tmpVol ( (*columns[0] )[z-1],
1839 (*columns[di] )[z-1],
1840 (*columns[2*di])[z-1],
1843 (*columns[2*di])[z] );
1844 vTool.Set( &tmpVol );
1845 isForward = vTool.IsForward();
1848 // vertical loop on columns
1850 helper->SetElementsOnShape( true );
1852 switch ( nbNodes ) {
1854 case 3: { // ---------- pentahedra
1855 const int i1 = isForward ? 1 : 2;
1856 const int i2 = isForward ? 2 : 1;
1857 for ( z = 1; z < nbZ; ++z )
1858 helper->AddVolume( (*columns[0 ])[z-1], // bottom
1859 (*columns[i1])[z-1],
1860 (*columns[i2])[z-1],
1861 (*columns[0 ])[z], // top
1863 (*columns[i2])[z] );
1866 case 4: { // ---------- hexahedra
1867 const int i1 = isForward ? 1 : 3;
1868 const int i3 = isForward ? 3 : 1;
1869 for ( z = 1; z < nbZ; ++z )
1870 helper->AddVolume( (*columns[0])[z-1], (*columns[i1])[z-1], // bottom
1871 (*columns[2])[z-1], (*columns[i3])[z-1],
1872 (*columns[0])[z], (*columns[i1])[z], // top
1873 (*columns[2])[z], (*columns[i3])[z] );
1876 case 6: { // ---------- octahedra
1877 const int iBase1 = isForward ? -1 : 0;
1878 const int iBase2 = isForward ? 0 :-1;
1879 for ( z = 1; z < nbZ; ++z )
1880 helper->AddVolume( (*columns[0])[z+iBase1], (*columns[1])[z+iBase1], // bottom or top
1881 (*columns[2])[z+iBase1], (*columns[3])[z+iBase1],
1882 (*columns[4])[z+iBase1], (*columns[5])[z+iBase1],
1883 (*columns[0])[z+iBase2], (*columns[1])[z+iBase2], // top or bottom
1884 (*columns[2])[z+iBase2], (*columns[3])[z+iBase2],
1885 (*columns[4])[z+iBase2], (*columns[5])[z+iBase2] );
1888 default: // ---------- polyhedra
1889 vector<int> quantities( 2 + nbNodes, 4 );
1890 quantities[0] = quantities[1] = nbNodes;
1891 columns.resize( nbNodes + 1 );
1892 columns[ nbNodes ] = columns[ 0 ];
1893 const int i1 = isForward ? 1 : 3;
1894 const int i3 = isForward ? 3 : 1;
1895 const int iBase1 = isForward ? -1 : 0;
1896 const int iBase2 = isForward ? 0 :-1;
1897 vector<const SMDS_MeshNode*> nodes( 2*nbNodes + 4*nbNodes);
1898 for ( z = 1; z < nbZ; ++z )
1900 for ( int i = 0; i < nbNodes; ++i ) {
1901 nodes[ i ] = (*columns[ i ])[z+iBase1]; // bottom or top
1902 nodes[ 2*nbNodes-i-1 ] = (*columns[ i ])[z+iBase2]; // top or bottom
1904 int di = 2*nbNodes + 4*i;
1905 nodes[ di+0 ] = (*columns[i ])[z ];
1906 nodes[ di+i1] = (*columns[i+1])[z ];
1907 nodes[ di+2 ] = (*columns[i+1])[z-1];
1908 nodes[ di+i3] = (*columns[i ])[z-1];
1910 helper->AddPolyhedralVolume( nodes, quantities );
1913 } // switch ( nbNodes )
1916 //================================================================================
1918 * \brief Find correspondence between bottom and top nodes
1919 * If elements on the bottom and top faces are topologically different,
1920 * and projection is possible and allowed, perform the projection
1921 * \retval bool - is a success or not
1923 //================================================================================
1925 bool StdMeshers_Prism_3D::assocOrProjBottom2Top( const gp_Trsf & bottomToTopTrsf,
1926 const Prism_3D::TPrismTopo& thePrism)
1928 SMESH_subMesh * botSM = myHelper->GetMesh()->GetSubMesh( thePrism.myBottom );
1929 SMESH_subMesh * topSM = myHelper->GetMesh()->GetSubMesh( thePrism.myTop );
1931 SMESHDS_SubMesh * botSMDS = botSM->GetSubMeshDS();
1932 SMESHDS_SubMesh * topSMDS = topSM->GetSubMeshDS();
1934 if ( !botSMDS || botSMDS->NbElements() == 0 )
1936 _gen->Compute( *myHelper->GetMesh(), botSM->GetSubShape(), /*aShapeOnly=*/true );
1937 botSMDS = botSM->GetSubMeshDS();
1938 if ( !botSMDS || botSMDS->NbElements() == 0 )
1939 return toSM( error(TCom("No elements on face #") << botSM->GetId() ));
1942 bool needProject = !topSM->IsMeshComputed();
1943 if ( !needProject &&
1944 (botSMDS->NbElements() != topSMDS->NbElements() ||
1945 botSMDS->NbNodes() != topSMDS->NbNodes()))
1947 MESSAGE("nb elem bot " << botSMDS->NbElements() <<
1948 " top " << ( topSMDS ? topSMDS->NbElements() : 0 ));
1949 MESSAGE("nb node bot " << botSMDS->NbNodes() <<
1950 " top " << ( topSMDS ? topSMDS->NbNodes() : 0 ));
1951 return toSM( error(TCom("Mesh on faces #") << botSM->GetId()
1952 <<" and #"<< topSM->GetId() << " seems different" ));
1955 if ( 0/*needProject && !myProjectTriangles*/ )
1956 return toSM( error(TCom("Mesh on faces #") << botSM->GetId()
1957 <<" and #"<< topSM->GetId() << " seems different" ));
1958 ///RETURN_BAD_RESULT("Need to project but not allowed");
1960 NSProjUtils::TNodeNodeMap n2nMap;
1961 const NSProjUtils::TNodeNodeMap* n2nMapPtr = & n2nMap;
1964 if ( !projectBottomToTop( bottomToTopTrsf, thePrism ))
1966 n2nMapPtr = & TProjction2dAlgo::instance( this )->GetNodesMap();
1969 if ( !n2nMapPtr || n2nMapPtr->size() < botSMDS->NbNodes() )
1971 // associate top and bottom faces
1972 NSProjUtils::TShapeShapeMap shape2ShapeMap;
1973 const bool sameTopo =
1974 NSProjUtils::FindSubShapeAssociation( thePrism.myBottom, myHelper->GetMesh(),
1975 thePrism.myTop, myHelper->GetMesh(),
1978 for ( size_t iQ = 0; iQ < thePrism.myWallQuads.size(); ++iQ )
1980 const Prism_3D::TQuadList& quadList = thePrism.myWallQuads[iQ];
1981 StdMeshers_FaceSidePtr botSide = quadList.front()->side[ QUAD_BOTTOM_SIDE ];
1982 StdMeshers_FaceSidePtr topSide = quadList.back ()->side[ QUAD_TOP_SIDE ];
1983 if ( botSide->NbEdges() == topSide->NbEdges() )
1985 for ( int iE = 0; iE < botSide->NbEdges(); ++iE )
1987 NSProjUtils::InsertAssociation( botSide->Edge( iE ),
1988 topSide->Edge( iE ), shape2ShapeMap );
1989 NSProjUtils::InsertAssociation( myHelper->IthVertex( 0, botSide->Edge( iE )),
1990 myHelper->IthVertex( 0, topSide->Edge( iE )),
1996 TopoDS_Vertex vb, vt;
1997 StdMeshers_FaceSidePtr sideB, sideT;
1998 vb = myHelper->IthVertex( 0, botSide->Edge( 0 ));
1999 vt = myHelper->IthVertex( 0, topSide->Edge( 0 ));
2000 sideB = quadList.front()->side[ QUAD_LEFT_SIDE ];
2001 sideT = quadList.back ()->side[ QUAD_LEFT_SIDE ];
2002 if ( vb.IsSame( sideB->FirstVertex() ) &&
2003 vt.IsSame( sideT->LastVertex() ))
2005 NSProjUtils::InsertAssociation( botSide->Edge( 0 ),
2006 topSide->Edge( 0 ), shape2ShapeMap );
2007 NSProjUtils::InsertAssociation( vb, vt, shape2ShapeMap );
2009 vb = myHelper->IthVertex( 1, botSide->Edge( botSide->NbEdges()-1 ));
2010 vt = myHelper->IthVertex( 1, topSide->Edge( topSide->NbEdges()-1 ));
2011 sideB = quadList.front()->side[ QUAD_RIGHT_SIDE ];
2012 sideT = quadList.back ()->side[ QUAD_RIGHT_SIDE ];
2013 if ( vb.IsSame( sideB->FirstVertex() ) &&
2014 vt.IsSame( sideT->LastVertex() ))
2016 NSProjUtils::InsertAssociation( botSide->Edge( botSide->NbEdges()-1 ),
2017 topSide->Edge( topSide->NbEdges()-1 ),
2019 NSProjUtils::InsertAssociation( vb, vt, shape2ShapeMap );
2024 // Find matching nodes of top and bottom faces
2025 n2nMapPtr = & n2nMap;
2026 if ( ! NSProjUtils::FindMatchingNodesOnFaces( thePrism.myBottom, myHelper->GetMesh(),
2027 thePrism.myTop, myHelper->GetMesh(),
2028 shape2ShapeMap, n2nMap ))
2031 return toSM( error(TCom("Mesh on faces #") << botSM->GetId()
2032 <<" and #"<< topSM->GetId() << " seems different" ));
2034 return toSM( error(TCom("Topology of faces #") << botSM->GetId()
2035 <<" and #"<< topSM->GetId() << " seems different" ));
2039 // Fill myBotToColumnMap
2041 int zSize = myBlock.VerticalSize();
2042 TNodeNodeMap::const_iterator bN_tN = n2nMapPtr->begin();
2043 for ( ; bN_tN != n2nMapPtr->end(); ++bN_tN )
2045 const SMDS_MeshNode* botNode = bN_tN->first;
2046 const SMDS_MeshNode* topNode = bN_tN->second;
2047 if ( botNode->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE )
2048 continue; // wall columns are contained in myBlock
2049 // create node column
2050 Prism_3D::TNode bN( botNode );
2051 TNode2ColumnMap::iterator bN_col =
2052 myBotToColumnMap.insert( make_pair ( bN, TNodeColumn() )).first;
2053 TNodeColumn & column = bN_col->second;
2054 column.resize( zSize );
2055 column.front() = botNode;
2056 column.back() = topNode;
2061 //================================================================================
2063 * \brief Remove faces from the top face and re-create them by projection from the bottom
2064 * \retval bool - a success or not
2066 //================================================================================
2068 bool StdMeshers_Prism_3D::projectBottomToTop( const gp_Trsf & bottomToTopTrsf,
2069 const Prism_3D::TPrismTopo& thePrism )
2071 if ( project2dMesh( thePrism.myBottom, thePrism.myTop ))
2075 NSProjUtils::TNodeNodeMap& n2nMap =
2076 (NSProjUtils::TNodeNodeMap&) TProjction2dAlgo::instance( this )->GetNodesMap();
2081 SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
2082 SMESH_subMesh * botSM = myHelper->GetMesh()->GetSubMesh( thePrism.myBottom );
2083 SMESH_subMesh * topSM = myHelper->GetMesh()->GetSubMesh( thePrism.myTop );
2085 SMESHDS_SubMesh * botSMDS = botSM->GetSubMeshDS();
2086 SMESHDS_SubMesh * topSMDS = topSM->GetSubMeshDS();
2088 if ( topSMDS && topSMDS->NbElements() > 0 )
2090 //topSM->ComputeStateEngine( SMESH_subMesh::CLEAN ); -- avoid propagation of events
2091 for ( SMDS_ElemIteratorPtr eIt = topSMDS->GetElements(); eIt->more(); )
2092 meshDS->RemoveFreeElement( eIt->next(), topSMDS, /*fromGroups=*/false );
2093 for ( SMDS_NodeIteratorPtr nIt = topSMDS->GetNodes(); nIt->more(); )
2094 meshDS->RemoveFreeNode( nIt->next(), topSMDS, /*fromGroups=*/false );
2097 const TopoDS_Face& botFace = thePrism.myBottom; // oriented within
2098 const TopoDS_Face& topFace = thePrism.myTop; // the 3D SHAPE
2099 int topFaceID = meshDS->ShapeToIndex( thePrism.myTop );
2101 SMESH_MesherHelper botHelper( *myHelper->GetMesh() );
2102 botHelper.SetSubShape( botFace );
2103 botHelper.ToFixNodeParameters( true );
2105 SMESH_MesherHelper topHelper( *myHelper->GetMesh() );
2106 topHelper.SetSubShape( topFace );
2107 topHelper.ToFixNodeParameters( true );
2108 double distXYZ[4], fixTol = 10 * topHelper.MaxTolerance( topFace );
2110 // Fill myBotToColumnMap
2112 int zSize = myBlock.VerticalSize();
2113 Prism_3D::TNode prevTNode;
2114 SMDS_NodeIteratorPtr nIt = botSMDS->GetNodes();
2115 while ( nIt->more() )
2117 const SMDS_MeshNode* botNode = nIt->next();
2118 const SMDS_MeshNode* topNode = 0;
2119 if ( botNode->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE )
2120 continue; // strange
2122 Prism_3D::TNode bN( botNode );
2123 if ( bottomToTopTrsf.Form() == gp_Identity )
2125 // compute bottom node params
2126 gp_XYZ paramHint(-1,-1,-1);
2127 if ( prevTNode.IsNeighbor( bN ))
2129 paramHint = prevTNode.GetParams();
2130 // double tol = 1e-2 * ( prevTNode.GetCoords() - bN.GetCoords() ).Modulus();
2131 // myBlock.SetTolerance( Min( myBlock.GetTolerance(), tol ));
2133 if ( !myBlock.ComputeParameters( bN.GetCoords(), bN.ChangeParams(),
2134 ID_BOT_FACE, paramHint ))
2135 return toSM( error(TCom("Can't compute normalized parameters for node ")
2136 << botNode->GetID() << " on the face #"<< botSM->GetId() ));
2138 // compute top node coords
2139 gp_XYZ topXYZ; gp_XY topUV;
2140 if ( !myBlock.FacePoint( ID_TOP_FACE, bN.GetParams(), topXYZ ) ||
2141 !myBlock.FaceUV ( ID_TOP_FACE, bN.GetParams(), topUV ))
2142 return toSM( error(TCom("Can't compute coordinates "
2143 "by normalized parameters on the face #")<< topSM->GetId() ));
2144 topNode = meshDS->AddNode( topXYZ.X(),topXYZ.Y(),topXYZ.Z() );
2145 meshDS->SetNodeOnFace( topNode, topFaceID, topUV.X(), topUV.Y() );
2147 else // use bottomToTopTrsf
2149 gp_XYZ coords = bN.GetCoords();
2150 bottomToTopTrsf.Transforms( coords );
2151 topNode = meshDS->AddNode( coords.X(), coords.Y(), coords.Z() );
2152 gp_XY topUV = botHelper.GetNodeUV( botFace, botNode, 0, &checkUV );
2153 meshDS->SetNodeOnFace( topNode, topFaceID, topUV.X(), topUV.Y() );
2155 if ( topHelper.CheckNodeUV( topFace, topNode, topUV, fixTol, /*force=*/false, distXYZ ) &&
2156 distXYZ[0] > fixTol && distXYZ[0] < fixTol * 1e+3 )
2157 meshDS->MoveNode( topNode, distXYZ[1], distXYZ[2], distXYZ[3] ); // transform can be inaccurate
2159 // create node column
2160 TNode2ColumnMap::iterator bN_col =
2161 myBotToColumnMap.insert( make_pair ( bN, TNodeColumn() )).first;
2162 TNodeColumn & column = bN_col->second;
2163 column.resize( zSize );
2164 column.front() = botNode;
2165 column.back() = topNode;
2167 n2nMap.insert( n2nMap.end(), make_pair( botNode, topNode ));
2169 if ( _computeCanceled )
2170 return toSM( error( SMESH_ComputeError::New(COMPERR_CANCELED)));
2175 const bool oldSetElemsOnShape = myHelper->SetElementsOnShape( false );
2177 // care of orientation;
2178 // if the bottom faces is orienetd OK then top faces must be reversed
2179 bool reverseTop = true;
2180 if ( myHelper->NbAncestors( botFace, *myBlock.Mesh(), TopAbs_SOLID ) > 1 )
2181 reverseTop = ! myHelper->IsReversedSubMesh( botFace );
2182 int iFrw, iRev, *iPtr = &( reverseTop ? iRev : iFrw );
2184 // loop on bottom mesh faces
2185 SMDS_ElemIteratorPtr faceIt = botSMDS->GetElements();
2186 vector< const SMDS_MeshNode* > nodes;
2187 while ( faceIt->more() )
2189 const SMDS_MeshElement* face = faceIt->next();
2190 if ( !face || face->GetType() != SMDSAbs_Face )
2193 // find top node in columns for each bottom node
2194 int nbNodes = face->NbCornerNodes();
2195 nodes.resize( nbNodes );
2196 for ( iFrw = 0, iRev = nbNodes-1; iFrw < nbNodes; ++iFrw, --iRev )
2198 const SMDS_MeshNode* n = face->GetNode( *iPtr );
2199 if ( n->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
2200 TNode2ColumnMap::iterator bot_column = myBotToColumnMap.find( n );
2201 if ( bot_column == myBotToColumnMap.end() )
2202 return toSM( error(TCom("No nodes found above node ") << n->GetID() ));
2203 nodes[ iFrw ] = bot_column->second.back();
2206 const TNodeColumn* column = myBlock.GetNodeColumn( n );
2208 return toSM( error(TCom("No side nodes found above node ") << n->GetID() ));
2209 nodes[ iFrw ] = column->back();
2212 SMDS_MeshElement* newFace = 0;
2213 switch ( nbNodes ) {
2216 newFace = myHelper->AddFace(nodes[0], nodes[1], nodes[2]);
2220 newFace = myHelper->AddFace( nodes[0], nodes[1], nodes[2], nodes[3] );
2224 newFace = meshDS->AddPolygonalFace( nodes );
2227 meshDS->SetMeshElementOnShape( newFace, topFaceID );
2230 myHelper->SetElementsOnShape( oldSetElemsOnShape );
2232 // Check the projected mesh
2234 if ( thePrism.myNbEdgesInWires.size() > 1 && // there are holes
2235 topHelper.IsDistorted2D( topSM, /*checkUV=*/false ))
2237 SMESH_MeshEditor editor( topHelper.GetMesh() );
2239 // smooth in 2D or 3D?
2240 TopLoc_Location loc;
2241 Handle(Geom_Surface) surface = BRep_Tool::Surface( topFace, loc );
2242 bool isPlanar = GeomLib_IsPlanarSurface( surface ).IsPlanar();
2244 bool isFixed = false;
2245 set<const SMDS_MeshNode*> fixedNodes;
2246 for ( int iAttemp = 0; !isFixed && iAttemp < 10; ++iAttemp )
2248 TIDSortedElemSet faces;
2249 for ( faceIt = topSMDS->GetElements(); faceIt->more(); )
2250 faces.insert( faces.end(), faceIt->next() );
2252 SMESH_MeshEditor::SmoothMethod algo =
2253 iAttemp ? SMESH_MeshEditor::CENTROIDAL : SMESH_MeshEditor::LAPLACIAN;
2256 editor.Smooth( faces, fixedNodes, algo, /*nbIterations=*/ 10,
2257 /*theTgtAspectRatio=*/1.0, /*the2D=*/!isPlanar);
2259 isFixed = !topHelper.IsDistorted2D( topSM, /*checkUV=*/true );
2262 return toSM( error( TCom("Projection from face #") << botSM->GetId()
2263 << " to face #" << topSM->GetId()
2264 << " failed: inverted elements created"));
2270 //=======================================================================
2271 //function : getSweepTolerance
2272 //purpose : Compute tolerance to pass to StdMeshers_Sweeper
2273 //=======================================================================
2275 double StdMeshers_Prism_3D::getSweepTolerance( const Prism_3D::TPrismTopo& thePrism )
2277 SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
2278 SMESHDS_SubMesh * sm[2] = { meshDS->MeshElements( thePrism.myBottom ),
2279 meshDS->MeshElements( thePrism.myTop ) };
2280 double minDist = 1e100;
2282 vector< SMESH_TNodeXYZ > nodes;
2283 for ( int iSM = 0; iSM < 2; ++iSM )
2285 if ( !sm[ iSM ]) continue;
2287 SMDS_ElemIteratorPtr fIt = sm[ iSM ]->GetElements();
2288 while ( fIt->more() )
2290 const SMDS_MeshElement* face = fIt->next();
2291 const int nbNodes = face->NbCornerNodes();
2292 SMDS_ElemIteratorPtr nIt = face->nodesIterator();
2294 nodes.resize( nbNodes + 1 );
2295 for ( int iN = 0; iN < nbNodes; ++iN )
2296 nodes[ iN ] = nIt->next();
2297 nodes.back() = nodes[0];
2301 for ( int iN = 0; iN < nbNodes; ++iN )
2303 if ( nodes[ iN ]._node->GetPosition()->GetDim() < 2 &&
2304 nodes[ iN+1 ]._node->GetPosition()->GetDim() < 2 )
2306 // it's a boundary link; measure distance of other
2307 // nodes to this link
2308 gp_XYZ linkDir = nodes[ iN ] - nodes[ iN+1 ];
2309 double linkLen = linkDir.Modulus();
2310 bool isDegen = ( linkLen < numeric_limits<double>::min() );
2311 if ( !isDegen ) linkDir /= linkLen;
2312 for ( int iN2 = 0; iN2 < nbNodes; ++iN2 ) // loop on other nodes
2314 if ( nodes[ iN2 ] == nodes[ iN ] ||
2315 nodes[ iN2 ] == nodes[ iN+1 ]) continue;
2318 dist2 = ( nodes[ iN ] - nodes[ iN2 ]).SquareModulus();
2322 dist2 = linkDir.CrossSquareMagnitude( nodes[ iN ] - nodes[ iN2 ]);
2324 if ( dist2 > numeric_limits<double>::min() )
2325 minDist = Min ( minDist, dist2 );
2328 // measure length link
2329 else if ( nodes[ iN ]._node < nodes[ iN+1 ]._node ) // not to measure same link twice
2331 dist2 = ( nodes[ iN ] - nodes[ iN+1 ]).SquareModulus();
2332 if ( dist2 > numeric_limits<double>::min() )
2333 minDist = Min ( minDist, dist2 );
2338 return 0.1 * Sqrt ( minDist );
2341 //=======================================================================
2342 //function : isSimpleQuad
2343 //purpose : check if the bottom FACE is meshable with nice qudrangles,
2344 // if so the block aproach can work rather fast.
2345 // This is a temporary mean caused by problems in StdMeshers_Sweeper
2346 //=======================================================================
2348 bool StdMeshers_Prism_3D::isSimpleBottom( const Prism_3D::TPrismTopo& thePrism )
2350 // analyse angles between edges
2351 double nbConcaveAng = 0, nbConvexAng = 0;
2352 TopoDS_Face reverseBottom = TopoDS::Face( thePrism.myBottom.Reversed() ); // see initPrism()
2353 TopoDS_Vertex commonV;
2354 const list< TopoDS_Edge >& botEdges = thePrism.myBottomEdges;
2355 list< TopoDS_Edge >::const_iterator edge = botEdges.begin();
2356 for ( ; edge != botEdges.end(); ++edge )
2358 if ( SMESH_Algo::isDegenerated( *edge ))
2360 TopoDS_Edge e1 = *edge++;
2361 TopoDS_Edge e2 = ( edge == botEdges.end() ? botEdges.front() : *edge );
2362 if ( ! TopExp::CommonVertex( e1, e2, commonV ))
2364 e2 = botEdges.front();
2365 if ( ! TopExp::CommonVertex( e1, e2, commonV ))
2368 double angle = myHelper->GetAngle( e1, e2, reverseBottom, commonV );
2369 if ( angle < -5 * M_PI/180 )
2370 if ( ++nbConcaveAng > 1 )
2372 if ( angle > 85 * M_PI/180 )
2373 if ( ++nbConvexAng > 4 )
2379 //=======================================================================
2380 //function : project2dMesh
2381 //purpose : Project mesh faces from a source FACE of one prism (theSrcFace)
2382 // to a source FACE of another prism (theTgtFace)
2383 //=======================================================================
2385 bool StdMeshers_Prism_3D::project2dMesh(const TopoDS_Face& theSrcFace,
2386 const TopoDS_Face& theTgtFace)
2388 TProjction2dAlgo* projector2D = TProjction2dAlgo::instance( this );
2389 projector2D->myHyp.SetSourceFace( theSrcFace );
2390 bool ok = projector2D->Compute( *myHelper->GetMesh(), theTgtFace );
2392 SMESH_subMesh* tgtSM = myHelper->GetMesh()->GetSubMesh( theTgtFace );
2393 if ( !ok && tgtSM->GetSubMeshDS() ) {
2394 //tgtSM->ComputeStateEngine( SMESH_subMesh::CLEAN ); -- avoid propagation of events
2395 SMESHDS_Mesh* meshDS = myHelper->GetMeshDS();
2396 SMESHDS_SubMesh* tgtSMDS = tgtSM->GetSubMeshDS();
2397 for ( SMDS_ElemIteratorPtr eIt = tgtSMDS->GetElements(); eIt->more(); )
2398 meshDS->RemoveFreeElement( eIt->next(), tgtSMDS, /*fromGroups=*/false );
2399 for ( SMDS_NodeIteratorPtr nIt = tgtSMDS->GetNodes(); nIt->more(); )
2400 meshDS->RemoveFreeNode( nIt->next(), tgtSMDS, /*fromGroups=*/false );
2402 tgtSM->ComputeStateEngine ( SMESH_subMesh::CHECK_COMPUTE_STATE );
2403 tgtSM->ComputeSubMeshStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
2408 //================================================================================
2410 * \brief Set projection coordinates of a node to a face and it's sub-shapes
2411 * \param faceID - the face given by in-block ID
2412 * \param params - node normalized parameters
2413 * \retval bool - is a success
2415 //================================================================================
2417 bool StdMeshers_Prism_3D::setFaceAndEdgesXYZ( const int faceID, const gp_XYZ& params, int z )
2419 // find base and top edges of the face
2420 enum { BASE = 0, TOP, LEFT, RIGHT };
2421 vector< int > edgeVec; // 0-base, 1-top
2422 SMESH_Block::GetFaceEdgesIDs( faceID, edgeVec );
2424 myBlock.EdgePoint( edgeVec[ BASE ], params, myShapeXYZ[ edgeVec[ BASE ]]);
2425 myBlock.EdgePoint( edgeVec[ TOP ], params, myShapeXYZ[ edgeVec[ TOP ]]);
2427 SHOWYXZ("\nparams ", params);
2428 SHOWYXZ("TOP is " <<edgeVec[ TOP ], myShapeXYZ[ edgeVec[ TOP]]);
2429 SHOWYXZ("BASE is "<<edgeVec[ BASE], myShapeXYZ[ edgeVec[ BASE]]);
2431 if ( faceID == SMESH_Block::ID_Fx0z || faceID == SMESH_Block::ID_Fx1z )
2433 myBlock.EdgePoint( edgeVec[ LEFT ], params, myShapeXYZ[ edgeVec[ LEFT ]]);
2434 myBlock.EdgePoint( edgeVec[ RIGHT ], params, myShapeXYZ[ edgeVec[ RIGHT ]]);
2436 SHOWYXZ("VER "<<edgeVec[ LEFT], myShapeXYZ[ edgeVec[ LEFT]]);
2437 SHOWYXZ("VER "<<edgeVec[ RIGHT], myShapeXYZ[ edgeVec[ RIGHT]]);
2439 myBlock.FacePoint( faceID, params, myShapeXYZ[ faceID ]);
2440 SHOWYXZ("FacePoint "<<faceID, myShapeXYZ[ faceID]);
2445 //=======================================================================
2447 //purpose : If (!isOK), sets the error to a sub-mesh of a current SOLID
2448 //=======================================================================
2450 bool StdMeshers_Prism_3D::toSM( bool isOK )
2452 if ( mySetErrorToSM &&
2455 !myHelper->GetSubShape().IsNull() &&
2456 myHelper->GetSubShape().ShapeType() == TopAbs_SOLID)
2458 SMESH_subMesh* sm = myHelper->GetMesh()->GetSubMesh( myHelper->GetSubShape() );
2459 sm->GetComputeError() = this->GetComputeError();
2460 // clear error in order not to return it twice
2461 _error = COMPERR_OK;
2467 //=======================================================================
2468 //function : shapeID
2469 //purpose : Return index of a shape
2470 //=======================================================================
2472 int StdMeshers_Prism_3D::shapeID( const TopoDS_Shape& S )
2474 if ( S.IsNull() ) return 0;
2475 if ( !myHelper ) return -3;
2476 return myHelper->GetMeshDS()->ShapeToIndex( S );
2479 namespace // utils used by StdMeshers_Prism_3D::IsApplicable()
2481 struct EdgeWithNeighbors
2485 EdgeWithNeighbors(const TopoDS_Edge& E, int iE, int nbE, int shift = 0 ):
2487 _iL( SMESH_MesherHelper::WrapIndex( iE-1, nbE ) + shift ),
2488 _iR( SMESH_MesherHelper::WrapIndex( iE+1, nbE ) + shift )
2491 EdgeWithNeighbors() {}
2496 TopTools_IndexedMapOfShape *_faces; // pointer because its copy constructor is private
2497 TopoDS_Edge _topEdge;
2498 vector< EdgeWithNeighbors >*_edges;
2500 vector< bool > _isCheckedEdge;
2501 int _nbCheckedEdges; // nb of EDGEs whose location is defined
2502 PrismSide *_leftSide;
2503 PrismSide *_rightSide;
2504 const TopoDS_Edge& Edge( int i ) const
2506 return (*_edges)[ i ]._edge;
2508 int FindEdge( const TopoDS_Edge& E ) const
2510 for ( size_t i = 0; i < _edges->size(); ++i )
2511 if ( E.IsSame( Edge( i ))) return i;
2514 bool IsSideFace( const TopoDS_Shape& face ) const
2516 if ( _faces->Contains( face )) // avoid returning true for a prism top FACE
2517 return ( !_face.IsNull() || !( face.IsSame( _faces->FindKey( _faces->Extent() ))));
2521 //--------------------------------------------------------------------------------
2523 * \brief Return ordered edges of a face
2525 bool getEdges( const TopoDS_Face& face,
2526 vector< EdgeWithNeighbors > & edges,
2527 const bool noHolesAllowed)
2529 list< TopoDS_Edge > ee;
2530 list< int > nbEdgesInWires;
2531 int nbW = SMESH_Block::GetOrderedEdges( face, ee, nbEdgesInWires );
2532 if ( nbW > 1 && noHolesAllowed )
2536 list< TopoDS_Edge >::iterator e = ee.begin();
2537 list< int >::iterator nbE = nbEdgesInWires.begin();
2538 for ( ; nbE != nbEdgesInWires.end(); ++nbE )
2539 for ( iE = 0; iE < *nbE; ++e, ++iE )
2540 if ( SMESH_Algo::isDegenerated( *e ))
2548 e->Orientation( TopAbs_FORWARD ); // for operator==() to work
2553 for ( nbE = nbEdgesInWires.begin(); nbE != nbEdgesInWires.end(); ++nbE )
2555 for ( iE = 0; iE < *nbE; ++e, ++iE )
2556 edges.push_back( EdgeWithNeighbors( *e, iE, *nbE, nbTot ));
2559 return edges.size();
2561 //--------------------------------------------------------------------------------
2563 * \brief Return another faces sharing an edge
2565 const TopoDS_Shape & getAnotherFace( const TopoDS_Face& face,
2566 const TopoDS_Edge& edge,
2567 TopTools_IndexedDataMapOfShapeListOfShape& facesOfEdge)
2569 TopTools_ListIteratorOfListOfShape faceIt( facesOfEdge.FindFromKey( edge ));
2570 for ( ; faceIt.More(); faceIt.Next() )
2571 if ( !face.IsSame( faceIt.Value() ))
2572 return faceIt.Value();
2577 //================================================================================
2579 * \brief Return true if the algorithm can mesh this shape
2580 * \param [in] aShape - shape to check
2581 * \param [in] toCheckAll - if true, this check returns OK if all shapes are OK,
2582 * else, returns OK if at least one shape is OK
2584 //================================================================================
2586 bool StdMeshers_Prism_3D::IsApplicable(const TopoDS_Shape & shape, bool toCheckAll)
2588 TopExp_Explorer sExp( shape, TopAbs_SOLID );
2592 for ( ; sExp.More(); sExp.Next() )
2596 TopExp_Explorer shExp( sExp.Current(), TopAbs_SHELL );
2597 if ( shExp.More() ) {
2598 shell = shExp.Current();
2603 if ( shell.IsNull() ) {
2604 if ( toCheckAll ) return false;
2608 TopTools_IndexedMapOfShape allFaces;
2609 TopExp::MapShapes( shell, TopAbs_FACE, allFaces );
2610 if ( allFaces.Extent() < 3 ) {
2611 if ( toCheckAll ) return false;
2615 if ( allFaces.Extent() == 6 )
2617 TopTools_IndexedMapOfOrientedShape map;
2618 bool isBox = SMESH_Block::FindBlockShapes( TopoDS::Shell( shell ),
2619 TopoDS_Vertex(), TopoDS_Vertex(), map );
2621 if ( !toCheckAll ) return true;
2626 TopTools_IndexedMapOfShape allShapes;
2627 TopExp::MapShapes( shape, allShapes );
2630 TopTools_IndexedDataMapOfShapeListOfShape facesOfEdge;
2631 TopTools_ListIteratorOfListOfShape faceIt;
2632 TopExp::MapShapesAndAncestors( sExp.Current(), TopAbs_EDGE, TopAbs_FACE , facesOfEdge );
2633 if ( facesOfEdge.IsEmpty() ) {
2634 if ( toCheckAll ) return false;
2638 typedef vector< EdgeWithNeighbors > TEdgeWithNeighborsVec;
2639 vector< TEdgeWithNeighborsVec > faceEdgesVec( allFaces.Extent() + 1 );
2640 TopTools_IndexedMapOfShape* facesOfSide = new TopTools_IndexedMapOfShape[ faceEdgesVec.size() ];
2641 SMESHUtils::ArrayDeleter<TopTools_IndexedMapOfShape> delFacesOfSide( facesOfSide );
2643 // try to use each face as a bottom one
2644 bool prismDetected = false;
2645 for ( int iF = 1; iF < allFaces.Extent() && !prismDetected; ++iF )
2647 const TopoDS_Face& botF = TopoDS::Face( allFaces( iF ));
2649 TEdgeWithNeighborsVec& botEdges = faceEdgesVec[ iF ];
2650 if ( botEdges.empty() )
2651 if ( !getEdges( botF, botEdges, /*noHoles=*/false ))
2653 if ( allFaces.Extent()-1 <= (int) botEdges.size() )
2654 continue; // all faces are adjacent to botF - no top FACE
2656 // init data of side FACEs
2657 vector< PrismSide > sides( botEdges.size() );
2658 for ( int iS = 0; iS < botEdges.size(); ++iS )
2660 sides[ iS ]._topEdge = botEdges[ iS ]._edge;
2661 sides[ iS ]._face = botF;
2662 sides[ iS ]._leftSide = & sides[ botEdges[ iS ]._iR ];
2663 sides[ iS ]._rightSide = & sides[ botEdges[ iS ]._iL ];
2664 sides[ iS ]._faces = & facesOfSide[ iS ];
2665 sides[ iS ]._faces->Clear();
2668 bool isOK = true; // ok for a current botF
2669 bool isAdvanced = true; // is new data found in a current loop
2670 int nbFoundSideFaces = 0;
2671 for ( int iLoop = 0; isOK && isAdvanced; ++iLoop )
2674 for ( size_t iS = 0; iS < sides.size() && isOK; ++iS )
2676 PrismSide& side = sides[ iS ];
2677 if ( side._face.IsNull() )
2678 continue; // probably the prism top face is the last of side._faces
2680 if ( side._topEdge.IsNull() )
2682 // find vertical EDGEs --- EGDEs shared with neighbor side FACEs
2683 for ( int is2nd = 0; is2nd < 2 && isOK; ++is2nd ) // 2 adjacent neighbors
2685 int di = is2nd ? 1 : -1;
2686 const PrismSide* adjSide = is2nd ? side._rightSide : side._leftSide;
2687 for ( size_t i = 1; i < side._edges->size(); ++i )
2689 int iE = SMESH_MesherHelper::WrapIndex( i*di + side._iBotEdge, side._edges->size());
2690 if ( side._isCheckedEdge[ iE ] ) continue;
2691 const TopoDS_Edge& vertE = side.Edge( iE );
2692 const TopoDS_Shape& neighborF = getAnotherFace( side._face, vertE, facesOfEdge );
2693 bool isEdgeShared = adjSide->IsSideFace( neighborF );
2697 side._isCheckedEdge[ iE ] = true;
2698 side._nbCheckedEdges++;
2699 int nbNotCheckedE = side._edges->size() - side._nbCheckedEdges;
2700 if ( nbNotCheckedE == 1 )
2705 if ( i == 1 && iLoop == 0 ) isOK = false;
2711 int nbNotCheckedE = side._edges->size() - side._nbCheckedEdges;
2712 if ( nbNotCheckedE == 1 )
2714 vector<bool>::iterator ii = std::find( side._isCheckedEdge.begin(),
2715 side._isCheckedEdge.end(), false );
2716 if ( ii != side._isCheckedEdge.end() )
2718 size_t iE = std::distance( side._isCheckedEdge.begin(), ii );
2719 side._topEdge = side.Edge( iE );
2722 isOK = ( nbNotCheckedE >= 1 );
2724 else //if ( !side._topEdge.IsNull() )
2726 // get a next face of a side
2727 const TopoDS_Shape& f = getAnotherFace( side._face, side._topEdge, facesOfEdge );
2728 side._faces->Add( f );
2730 if ( f.IsSame( side._face ) || // _topEdge is a seam
2731 SMESH_MesherHelper::Count( f, TopAbs_WIRE, false ) != 1 )
2735 else if ( side._leftSide != & side ) // not closed side face
2737 if ( side._leftSide->_faces->Contains( f ))
2739 stop = true; // probably f is the prism top face
2740 side._leftSide->_face.Nullify();
2741 side._leftSide->_topEdge.Nullify();
2743 if ( side._rightSide->_faces->Contains( f ))
2745 stop = true; // probably f is the prism top face
2746 side._rightSide->_face.Nullify();
2747 side._rightSide->_topEdge.Nullify();
2752 side._face.Nullify();
2753 side._topEdge.Nullify();
2756 side._face = TopoDS::Face( f );
2757 int faceID = allFaces.FindIndex( side._face );
2758 side._edges = & faceEdgesVec[ faceID ];
2759 if ( side._edges->empty() )
2760 if ( !getEdges( side._face, * side._edges, /*noHoles=*/true ))
2762 const int nbE = side._edges->size();
2767 side._iBotEdge = side.FindEdge( side._topEdge );
2768 side._isCheckedEdge.clear();
2769 side._isCheckedEdge.resize( nbE, false );
2770 side._isCheckedEdge[ side._iBotEdge ] = true;
2771 side._nbCheckedEdges = 1; // bottom EDGE is known
2773 side._topEdge.Nullify();
2774 isOK = ( !side._edges->empty() || side._faces->Extent() > 1 );
2776 } //if ( !side._topEdge.IsNull() )
2778 } // loop on prism sides
2780 if ( nbFoundSideFaces > allFaces.Extent() )
2784 if ( iLoop > allFaces.Extent() * 10 )
2788 cerr << "BUG: infinite loop in StdMeshers_Prism_3D::IsApplicable()" << endl;
2791 } // while isAdvanced
2793 if ( isOK && sides[0]._faces->Extent() > 1 )
2795 const int nbFaces = sides[0]._faces->Extent();
2796 if ( botEdges.size() == 1 ) // cylinder
2798 prismDetected = ( nbFaces == allFaces.Extent()-1 );
2802 const TopoDS_Shape& topFace = sides[0]._faces->FindKey( nbFaces );
2804 for ( iS = 1; iS < sides.size(); ++iS )
2805 if ( !sides[ iS ]._faces->Contains( topFace ))
2807 prismDetected = ( iS == sides.size() );
2810 } // loop on allFaces
2812 if ( !prismDetected && toCheckAll ) return false;
2813 if ( prismDetected && !toCheckAll ) return true;
2822 //================================================================================
2824 * \brief Return true if this node and other one belong to one face
2826 //================================================================================
2828 bool Prism_3D::TNode::IsNeighbor( const Prism_3D::TNode& other ) const
2830 if ( !other.myNode || !myNode ) return false;
2832 SMDS_ElemIteratorPtr fIt = other.myNode->GetInverseElementIterator(SMDSAbs_Face);
2833 while ( fIt->more() )
2834 if ( fIt->next()->GetNodeIndex( myNode ) >= 0 )
2839 //================================================================================
2841 * \brief Prism initialization
2843 //================================================================================
2845 void TPrismTopo::Clear()
2847 myShape3D.Nullify();
2850 myWallQuads.clear();
2851 myBottomEdges.clear();
2852 myNbEdgesInWires.clear();
2853 myWallQuads.clear();
2856 //================================================================================
2858 * \brief Set upside-down
2860 //================================================================================
2862 void TPrismTopo::SetUpsideDown()
2864 std::swap( myBottom, myTop );
2865 myBottomEdges.clear();
2866 std::reverse( myBottomEdges.begin(), myBottomEdges.end() );
2867 for ( size_t i = 0; i < myWallQuads.size(); ++i )
2869 myWallQuads[i].reverse();
2870 TQuadList::iterator q = myWallQuads[i].begin();
2871 for ( ; q != myWallQuads[i].end(); ++q )
2873 (*q)->shift( 2, /*keepUnitOri=*/true );
2875 myBottomEdges.push_back( myWallQuads[i].front()->side[ QUAD_BOTTOM_SIDE ].grid->Edge(0) );
2879 } // namespace Prism_3D
2881 //================================================================================
2883 * \brief Constructor. Initialization is needed
2885 //================================================================================
2887 StdMeshers_PrismAsBlock::StdMeshers_PrismAsBlock()
2892 StdMeshers_PrismAsBlock::~StdMeshers_PrismAsBlock()
2896 void StdMeshers_PrismAsBlock::Clear()
2899 myShapeIDMap.Clear();
2903 delete mySide; mySide = 0;
2905 myParam2ColumnMaps.clear();
2906 myShapeIndex2ColumnMap.clear();
2909 //=======================================================================
2910 //function : initPrism
2911 //purpose : Analyse shape geometry and mesh.
2912 // If there are triangles on one of faces, it becomes 'bottom'.
2913 // thePrism.myBottom can be already set up.
2914 //=======================================================================
2916 bool StdMeshers_Prism_3D::initPrism(Prism_3D::TPrismTopo& thePrism,
2917 const TopoDS_Shape& theShape3D,
2918 const bool selectBottom)
2920 myHelper->SetSubShape( theShape3D );
2922 SMESH_subMesh* mainSubMesh = myHelper->GetMesh()->GetSubMeshContaining( theShape3D );
2923 if ( !mainSubMesh ) return toSM( error(COMPERR_BAD_INPUT_MESH,"Null submesh of shape3D"));
2925 // detect not-quad FACE sub-meshes of the 3D SHAPE
2926 list< SMESH_subMesh* > notQuadGeomSubMesh;
2927 list< SMESH_subMesh* > notQuadElemSubMesh;