1 // Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // File : StdMeshers_RadialQuadrangle_1D2D.cxx
23 #include "StdMeshers_RadialQuadrangle_1D2D.hxx"
25 #include "StdMeshers_NumberOfLayers.hxx"
26 #include "StdMeshers_LayerDistribution.hxx"
27 #include "StdMeshers_Regular_1D.hxx"
28 #include "StdMeshers_NumberOfSegments.hxx"
29 #include "StdMeshers_FaceSide.hxx"
31 #include "SMDS_MeshNode.hxx"
32 #include "SMESHDS_Mesh.hxx"
33 #include "SMESHDS_SubMesh.hxx"
34 #include "SMESH_Gen.hxx"
35 #include "SMESH_HypoFilter.hxx"
36 #include "SMESH_Mesh.hxx"
37 #include "SMESH_MesherHelper.hxx"
38 #include "SMESH_subMesh.hxx"
39 #include "SMESH_subMeshEventListener.hxx"
40 #include "SMESH_Block.hxx"
42 #include "utilities.h"
44 #include <BRepAdaptor_CompCurve.hxx>
45 #include <BRepAdaptor_Curve.hxx>
46 #include <BRepBuilderAPI_MakeEdge.hxx>
47 #include <BRep_Builder.hxx>
48 #include <BRep_Tool.hxx>
49 #include <GCPnts_AbscissaPoint.hxx>
50 #include <Geom2d_Line.hxx>
51 #include <Geom2d_TrimmedCurve.hxx>
52 #include <GeomAPI_ProjectPointOnSurf.hxx>
53 #include <Geom_Circle.hxx>
54 #include <Geom_Line.hxx>
55 #include <Geom_TrimmedCurve.hxx>
56 #include <ShapeFix_Edge.hxx>
57 #include <TColgp_SequenceOfPnt.hxx>
58 #include <TColgp_SequenceOfPnt2d.hxx>
60 #include <TopExp_Explorer.hxx>
61 #include <TopTools_ListIteratorOfListOfShape.hxx>
67 #define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
68 #define gpXYZ(n) gp_XYZ(n->X(),n->Y(),n->Z())
71 //=======================================================================
72 //function : StdMeshers_RadialQuadrangle_1D2D
74 //=======================================================================
76 StdMeshers_RadialQuadrangle_1D2D::StdMeshers_RadialQuadrangle_1D2D(int hypId,
79 :StdMeshers_Quadrangle_2D( hypId, studyId, gen )
81 _name = "RadialQuadrangle_1D2D";
82 _shapeType = (1 << TopAbs_FACE); // 1 bit per shape type
84 _compatibleHypothesis.push_back("LayerDistribution2D");
85 _compatibleHypothesis.push_back("NumberOfLayers2D");
86 _requireDiscreteBoundary = false;
87 _supportSubmeshes = true;
88 _neededLowerHyps[ 1 ] = true; // suppress warning on hiding a global 1D algo
91 myDistributionHypo = 0;
95 //================================================================================
99 //================================================================================
101 StdMeshers_RadialQuadrangle_1D2D::~StdMeshers_RadialQuadrangle_1D2D()
105 //=======================================================================
106 //function : CheckHypothesis
108 //=======================================================================
110 bool StdMeshers_RadialQuadrangle_1D2D::CheckHypothesis
112 const TopoDS_Shape& aShape,
113 SMESH_Hypothesis::Hypothesis_Status& aStatus)
117 myDistributionHypo = 0;
119 list <const SMESHDS_Hypothesis * >::const_iterator itl;
121 const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(aMesh, aShape);
122 if ( hyps.size() == 0 ) {
123 aStatus = SMESH_Hypothesis::HYP_OK;
124 return true; // can work with no hypothesis
127 if ( hyps.size() > 1 ) {
128 aStatus = SMESH_Hypothesis::HYP_ALREADY_EXIST;
132 const SMESHDS_Hypothesis *theHyp = hyps.front();
134 string hypName = theHyp->GetName();
136 if (hypName == "NumberOfLayers2D") {
137 myNbLayerHypo = static_cast<const StdMeshers_NumberOfLayers *>(theHyp);
138 aStatus = SMESH_Hypothesis::HYP_OK;
141 if (hypName == "LayerDistribution2D") {
142 myDistributionHypo = static_cast<const StdMeshers_LayerDistribution *>(theHyp);
143 aStatus = SMESH_Hypothesis::HYP_OK;
146 aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
152 // ------------------------------------------------------------------------------
154 * \brief Listener used to mark edges meshed by StdMeshers_RadialQuadrangle_1D2D
156 class TEdgeMarker : public SMESH_subMeshEventListener
158 TEdgeMarker(): SMESH_subMeshEventListener(/*isDeletable=*/false,
159 "StdMeshers_RadialQuadrangle_1D2D::TEdgeMarker") {}
161 //!< Return static listener
162 static SMESH_subMeshEventListener* getListener()
164 static TEdgeMarker theEdgeMarker;
165 return &theEdgeMarker;
167 //! Clear face sumbesh if something happens on edges
168 void ProcessEvent(const int event,
170 SMESH_subMesh* edgeSubMesh,
171 EventListenerData* data,
172 const SMESH_Hypothesis* /*hyp*/)
174 if ( data && !data->mySubMeshes.empty() && eventType == SMESH_subMesh::ALGO_EVENT)
176 ASSERT( data->mySubMeshes.front() != edgeSubMesh );
177 SMESH_subMesh* faceSubMesh = data->mySubMeshes.front();
178 faceSubMesh->ComputeStateEngine( SMESH_subMesh::CLEAN );
183 //================================================================================
185 * \brief Mark an edge as computed by StdMeshers_RadialQuadrangle_1D2D
187 //================================================================================
189 void markEdgeAsComputedByMe(const TopoDS_Edge& edge, SMESH_subMesh* faceSubMesh)
191 if ( SMESH_subMesh* edgeSM = faceSubMesh->GetFather()->GetSubMeshContaining( edge ))
193 if ( !edgeSM->GetEventListenerData( TEdgeMarker::getListener() ))
194 faceSubMesh->SetEventListener( TEdgeMarker::getListener(),
195 SMESH_subMeshEventListenerData::MakeData(faceSubMesh),
200 //================================================================================
202 * \brief Return sides of the face connected in the order: aCircEdge, aLinEdge1, aLinEdge2
203 * \retval int - nb of sides
205 //================================================================================
207 int analyseFace(const TopoDS_Shape& aShape,
209 StdMeshers_FaceSidePtr& aCircSide,
210 StdMeshers_FaceSidePtr& aLinSide1,
211 StdMeshers_FaceSidePtr& aLinSide2)
213 const TopoDS_Face& face = TopoDS::Face( aShape );
214 aCircSide.reset(); aLinSide1.reset(); aLinSide2.reset();
216 list< TopoDS_Edge > edges;
217 list< int > nbEdgesInWire;
218 int nbWire = SMESH_Block::GetOrderedEdges ( face, edges, nbEdgesInWire );
219 if ( nbWire > 2 || nbEdgesInWire.front() < 1 ) return 0;
221 // remove degenerated EDGEs
222 list<TopoDS_Edge>::iterator edge = edges.begin();
223 while ( edge != edges.end() )
224 if ( SMESH_Algo::isDegenerated( *edge ))
225 edge = edges.erase( edge );
228 int nbEdges = edges.size();
230 // find VERTEXes between continues EDGEs
231 TopTools_MapOfShape contVV;
234 TopoDS_Edge ePrev = edges.back();
235 for ( edge = edges.begin(); edge != edges.end(); ++edge )
237 if ( SMESH_Algo::IsContinuous( ePrev, *edge ))
238 contVV.Add( SMESH_MesherHelper::IthVertex( 0, *edge ));
242 // make edges start from a non-continues VERTEX
243 if ( 1 < contVV.Extent() && contVV.Extent() < nbEdges )
245 while ( contVV.Contains( SMESH_MesherHelper::IthVertex( 0, edges.front() )))
246 edges.splice( edges.end(), edges, edges.begin() );
251 while ( !edges.empty() )
253 list< TopoDS_Edge > sideEdges;
254 sideEdges.splice( sideEdges.end(), edges, edges.begin() );
255 while ( !edges.empty() &&
256 contVV.Contains( SMESH_MesherHelper::IthVertex( 0, edges.front() )))
257 sideEdges.splice( sideEdges.end(), edges, edges.begin() );
259 StdMeshers_FaceSidePtr side;
261 side = StdMeshers_FaceSide::New( face, sideEdges, aMesh,
262 /*isFwd=*/true, /*skipMedium=*/ true );
263 sides.push_back( side );
266 if ( !aMesh ) // call from IsApplicable()
269 if ( sides.size() > 3 )
272 if ( nbWire == 2 && (( sides.size() != 2 ) ||
273 ( sides[0]->IsClosed() && sides[1]->IsClosed() ) ||
274 ( !sides[0]->IsClosed() && !sides[1]->IsClosed() )))
277 // detect an elliptic side
279 if ( sides.size() == 1 )
281 aCircSide = sides[0];
285 // sort sides by deviation from a straight line
286 multimap< double, int > deviation2sideInd;
287 const double nbSamples = 7;
288 for ( size_t iS = 0; iS < sides.size(); ++iS )
290 gp_Pnt pf = BRep_Tool::Pnt( sides[iS]->FirstVertex() );
291 gp_Pnt pl = BRep_Tool::Pnt( sides[iS]->LastVertex() );
293 double v1Len = v1.Magnitude();
294 if ( v1Len < std::numeric_limits< double >::min() )
296 deviation2sideInd.insert( make_pair( sides[iS]->Length(), iS )); // the side seems closed
300 for ( int i = 0; i < nbSamples; ++i )
302 gp_Pnt pi( sides[iS]->Value3d(( i + 1 ) / nbSamples ));
304 double h = 0.5 * v1.Crossed( vi ).Magnitude() / v1Len;
305 devia = Max( devia, h );
307 deviation2sideInd.insert( make_pair( devia, iS ));
310 int iCirc = deviation2sideInd.rbegin()->second;
311 aCircSide = sides[ iCirc ];
312 aLinSide1 = sides[( iCirc + 1 ) % sides.size() ];
313 if ( sides.size() > 2 )
315 aLinSide2 = sides[( iCirc + 2 ) % sides.size() ];
316 aLinSide2->Reverse(); // to be "parallel" to aLinSide1
319 if (( nbWire == 2 && aLinSide1 ) &&
320 ( aLinSide1->Edge(0).Orientation() == TopAbs_INTERNAL ) &&
321 ( aCircSide->IsClosed() ))
323 // assure that aCircSide starts at aLinSide1
324 TopoDS_Vertex v0 = aLinSide1->FirstVertex();
325 TopoDS_Vertex v1 = aLinSide1->LastVertex();
326 if ( ! aCircSide->FirstVertex().IsSame( v0 ) &&
327 ! aCircSide->FirstVertex().IsSame( v1 ))
330 for ( ; iE < aCircSide->NbEdges(); ++iE )
331 if ( aCircSide->FirstVertex(iE).IsSame( v0 ) ||
332 aCircSide->FirstVertex(iE).IsSame( v1 ))
334 if ( iE == aCircSide->NbEdges() )
338 for ( int i = 0; i < aCircSide->NbEdges(); ++i, ++iE )
339 edges.push_back( aCircSide->Edge( iE % aCircSide->NbEdges() ));
341 aCircSide = StdMeshers_FaceSide::New( face, edges, aMesh,
342 /*isFwd=*/true, /*skipMedium=*/ true );
349 //================================================================================
351 * \brief Checks if the common vertex between LinSide's lies inside the circle
353 * \return bool - false if there are 3 EDGEs and the corner is outside
355 //================================================================================
357 bool isCornerInsideCircle(const StdMeshers_FaceSidePtr& CircSide,
358 const StdMeshers_FaceSidePtr& LinSide1,
359 const StdMeshers_FaceSidePtr& LinSide2)
361 // if ( CircSide && LinSide1 && LinSide2 )
363 // Handle(Geom_Circle) aCirc = Handle(Geom_Circle)::DownCast( getCurve( CircSide ));
364 // TopoDS_Vertex aCommonV;
365 // if ( !aCirc.IsNull() &&
366 // TopExp::CommonVertex( LinSide1, LinSide2, aCommonV ))
368 // gp_Pnt aCommonP = BRep_Tool::Pnt( aCommonV );
369 // gp_Pnt aCenter = aCirc->Location();
370 // double dist = aCenter.Distance( aCommonP );
371 // return dist < 0.1 * aCirc->Radius();
377 //================================================================================
379 * \brief Create an EDGE connecting the ellipse center with the most distant point
381 * \param [in] circSide - the elliptic side
382 * \param [in] face - the FACE
383 * \param [out] circNode - a node on circSide most distant from the center
384 * \return TopoDS_Edge - the create EDGE
386 //================================================================================
388 TopoDS_Edge makeEdgeToCenter( StdMeshers_FaceSidePtr& circSide,
389 const TopoDS_Face& face,
390 const SMDS_MeshNode*& circNode)
392 // find the center and a point most distant from it
394 double maxDist = 0, normPar;
396 for ( int i = 0; i < 32; ++i )
398 double u = 0.5 * i / 32.;
399 gp_Pnt2d p1 = circSide->Value2d( u );
400 gp_Pnt2d p2 = circSide->Value2d( u + 0.5 );
401 double dist = p1.SquareDistance( p2 );
402 if ( dist > maxDist )
410 gp_XY center = 0.5 * ( uv1 + uv2 );
411 double len = 0.5 * Sqrt( maxDist );
412 bool isCirc = ( Abs( len - circSide->Value2d( 0 ).Distance( center )) < 1e-3 * len );
414 // find a node closest to the most distant point
417 const UVPtStructVec& circNodes = circSide->GetUVPtStruct();
420 double minDist = 1e100;
421 for ( size_t i = 0; i <= circNodes.size(); ++i )
423 double dist = Abs( circNodes[i].normParam - normPar );
424 if ( dist < minDist )
431 circNode = circNodes[iDist].node;
432 uv1 = circNodes[iDist].UV();
433 len = ( uv1 - center ).Modulus();
435 // make the EDGE between the most distant point and the center
437 Handle(Geom2d_Line) line = new Geom2d_Line( uv1, gp_Dir2d( center - uv1 ) );
438 Handle(Geom2d_Curve) pcu = new Geom2d_TrimmedCurve( line, 0, len );
440 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
441 TopoDS_Edge edge = BRepBuilderAPI_MakeEdge( pcu, surface, 0, len );
443 BRep_Builder().UpdateEdge( edge, pcu, face, 1e-7 );
444 ShapeFix_Edge().FixAddCurve3d( edge );
447 // assure that circSide starts at circNode
448 if ( iDist != 0 && iDist != circNodes.size()-1 )
450 // create a new circSide
451 UVPtStructVec nodesNew;
452 nodesNew.reserve( circNodes.size() );
453 nodesNew.insert( nodesNew.end(), circNodes.begin() + iDist, circNodes.end() );
454 nodesNew.insert( nodesNew.end(), circNodes.begin() + 1, circNodes.begin() + iDist + 1 );
455 circSide = StdMeshers_FaceSide::New( nodesNew );
461 //================================================================================
463 * \brief Set nodes existing on a linSide to UVPtStructVec and create missing nodes
464 * corresponding to layerPositions
466 //================================================================================
468 void makeMissingMesh( StdMeshers_FaceSidePtr& linSide,
469 UVPtStructVec& nodes,
470 const vector< double >& layerPositions,
471 SMESH_MesherHelper* helper )
473 // tolerance to compare normParam
475 for ( size_t i = 1; i < layerPositions.size(); ++i )
476 tol = Min( tol, layerPositions[i] - layerPositions[i-1] );
479 // merge existing nodes with layerPositions into UVPtStructVec
480 // ------------------------------------------------------------
482 const UVPtStructVec& exiNodes = linSide->GetUVPtStruct();
484 nodes.reserve( layerPositions.size() + exiNodes.size() );
485 vector< double >::const_iterator pos = layerPositions.begin(), posEnd = layerPositions.end();
486 for ( size_t i = 0; i < exiNodes.size(); ++i )
488 switch ( exiNodes[i].node->GetPosition()->GetTypeOfPosition() )
490 case SMDS_TOP_VERTEX:
492 // allocate UVPtStruct's for non-existing nodes
493 while ( pos != posEnd && *pos < exiNodes[i].normParam - tol )
496 uvPS.normParam = *pos++;
497 nodes.push_back( uvPS );
499 // save existing node on a VERTEX
500 nodes.push_back( exiNodes[i] );
505 // save existing nodes on an EDGE
506 while ( i < exiNodes.size() && exiNodes[i].node->GetPosition()->GetDim() == 1 )
508 nodes.push_back( exiNodes[i++] );
510 // save existing node on a VERTEX
511 if ( i < exiNodes.size() && exiNodes[i].node->GetPosition()->GetDim() == 0 )
513 nodes.push_back( exiNodes[i] );
520 // skip layer positions covered by saved nodes
521 while ( pos != posEnd && *pos < nodes.back().normParam + tol )
526 // allocate UVPtStruct's for the rest non-existing nodes
527 while ( pos != posEnd )
530 uvPS.normParam = *pos++;
531 nodes.push_back( uvPS );
534 // create missing nodes
535 // ---------------------
537 SMESHDS_Mesh * meshDS = helper->GetMeshDS();
538 const TopoDS_Face& F = TopoDS::Face( helper->GetSubShape() );
539 Handle(ShapeAnalysis_Surface) surface = helper->GetSurface( F );
541 helper->SetElementsOnShape( false ); // we create nodes on EDGEs, not on the FACE
543 for ( size_t i = 0; i < nodes.size(); ++i )
545 if ( nodes[ i ].node ) continue;
547 gp_Pnt2d uv = linSide->Value2d( nodes[i].normParam );
548 gp_Pnt xyz = surface->Value( uv.X(), uv.Y() );
550 nodes[ i ].SetUV( uv.XY() );
551 nodes[ i ].node = helper->AddNode( xyz.X(), xyz.Y(), xyz.Z() );
554 // set nodes on VERTEXes
555 for ( int iE = 0; iE < linSide->NbEdges(); ++iE )
557 TopoDS_Vertex v = linSide->LastVertex( iE );
558 if ( SMESH_Algo::VertexNode( v, meshDS ))
561 double normPar = linSide->LastParameter( iE );
563 while ( nodes[ i ].normParam < normPar )
565 if (( nodes[ i ].normParam - normPar ) > ( normPar - nodes[ i-1 ].normParam ))
567 meshDS->SetNodeOnVertex( nodes[ i ].node, v );
570 // set nodes on EDGEs
572 for ( size_t i = 0; i < nodes.size(); ++i )
574 if ( nodes[ i ].node->getshapeId() > 0 ) continue;
576 double u = linSide->Parameter( nodes[i].normParam, edgeID );
577 meshDS->SetNodeOnEdge( nodes[ i ].node, edgeID, u );
581 for ( size_t i = 1; i < nodes.size(); ++i )
583 if ( meshDS->FindEdge( nodes[i].node, nodes[i-1].node )) continue;
585 const SMDS_MeshElement* seg = helper->AddEdge( nodes[i].node, nodes[i-1].node );
587 double normParam = 0.5 * ( nodes[i].normParam + nodes[i-1].normParam );
588 edgeID = linSide->EdgeID( linSide->EdgeIndex( normParam ));
589 meshDS->SetMeshElementOnShape( seg, edgeID );
592 helper->SetElementsOnShape( true );
594 } // end makeMissingMesh()
596 //================================================================================
597 //================================================================================
599 * \brief Class computing layers distribution using data of
600 * StdMeshers_LayerDistribution hypothesis
602 //================================================================================
603 //================================================================================
605 class TNodeDistributor: public StdMeshers_Regular_1D
607 list <const SMESHDS_Hypothesis *> myUsedHyps;
609 // -----------------------------------------------------------------------------
610 static TNodeDistributor* GetDistributor(SMESH_Mesh& aMesh)
612 const int myID = -1001;
613 TNodeDistributor* myHyp = dynamic_cast<TNodeDistributor*>( aMesh.GetHypothesis( myID ));
615 myHyp = new TNodeDistributor( myID, 0, aMesh.GetGen() );
618 // -----------------------------------------------------------------------------
619 //! Computes distribution of nodes on a straight line ending at pIn and pOut
620 bool Compute( vector< double > & positions,
621 const TopoDS_Edge& edge,
622 Adaptor3d_Curve& curve,
626 const SMESH_Hypothesis* hyp1d)
628 if ( !hyp1d ) return error( "Invalid LayerDistribution hypothesis");
631 myUsedHyps.push_back( hyp1d );
633 SMESH_Hypothesis::Hypothesis_Status aStatus;
634 if ( !StdMeshers_Regular_1D::CheckHypothesis( mesh, edge, aStatus ))
635 return error( "StdMeshers_Regular_1D::CheckHypothesis() failed "
636 "with LayerDistribution hypothesis");
638 double len = GCPnts_AbscissaPoint::Length( curve, f, l );
640 list< double > params;
641 if ( !StdMeshers_Regular_1D::computeInternalParameters( mesh, curve, len, f, l, params, false ))
642 return error("StdMeshers_Regular_1D failed to compute layers distribution");
644 params.push_front( f );
645 params.push_back ( l );
647 positions.reserve( params.size() );
648 for (list<double>::iterator itU = params.begin(); itU != params.end(); itU++)
649 positions.push_back(( *itU - f ) / ( l - f ));
652 // -----------------------------------------------------------------------------
653 //! Make mesh on an adge using assigned 1d hyp or defaut nb of segments
654 bool ComputeCircularEdge( SMESH_Mesh& aMesh,
655 const StdMeshers_FaceSidePtr& aSide )
658 for ( int i = 0; i < aSide->NbEdges(); ++i )
660 const TopoDS_Edge& edge = aSide->Edge( i );
661 _gen->Compute( aMesh, edge );
662 SMESH_subMesh *sm = aMesh.GetSubMesh( edge );
663 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK)
665 // find any 1d hyp assigned (there can be a hyp w/o algo)
666 myUsedHyps = SMESH_Algo::GetUsedHypothesis( aMesh, edge, /*ignoreAux=*/true );
667 Hypothesis_Status aStatus;
668 if ( !StdMeshers_Regular_1D::CheckHypothesis( aMesh, edge, aStatus ))
670 // no valid 1d hyp assigned, use default nb of segments
671 _hypType = NB_SEGMENTS;
672 _ivalue[ DISTR_TYPE_IND ] = StdMeshers_NumberOfSegments::DT_Regular;
673 _ivalue[ NB_SEGMENTS_IND ] = _gen->GetDefaultNbSegments();
675 ok &= StdMeshers_Regular_1D::Compute( aMesh, edge );
680 // -----------------------------------------------------------------------------
681 //! Make mesh on an adge using assigned 1d hyp or defaut nb of segments
682 bool EvaluateCircularEdge(SMESH_Mesh& aMesh,
683 const StdMeshers_FaceSidePtr aSide,
684 MapShapeNbElems& aResMap)
687 for ( int i = 0; i < aSide->NbEdges(); ++i )
689 const TopoDS_Edge& anEdge = aSide->Edge( i );
690 _gen->Evaluate( aMesh, anEdge, aResMap );
691 if ( aResMap.count( aMesh.GetSubMesh( anEdge )))
694 // find any 1d hyp assigned
695 myUsedHyps = SMESH_Algo::GetUsedHypothesis(aMesh, anEdge, /*ignoreAux=*/true);
696 Hypothesis_Status aStatus;
697 if ( !StdMeshers_Regular_1D::CheckHypothesis( aMesh, anEdge, aStatus ))
699 // no valid 1d hyp assigned, use default nb of segments
700 _hypType = NB_SEGMENTS;
701 _ivalue[ DISTR_TYPE_IND ] = StdMeshers_NumberOfSegments::DT_Regular;
702 _ivalue[ NB_SEGMENTS_IND ] = _gen->GetDefaultNbSegments();
704 ok &= StdMeshers_Regular_1D::Evaluate( aMesh, anEdge, aResMap );
709 // -----------------------------------------------------------------------------
710 TNodeDistributor( int hypId, int studyId, SMESH_Gen* gen)
711 : StdMeshers_Regular_1D( hypId, studyId, gen)
714 // -----------------------------------------------------------------------------
715 virtual const list <const SMESHDS_Hypothesis *> &
716 GetUsedHypothesis(SMESH_Mesh &, const TopoDS_Shape &, const bool)
720 // -----------------------------------------------------------------------------
724 //=======================================================================
726 * \brief Allow algo to do something after persistent restoration
727 * \param subMesh - restored submesh
729 * call markEdgeAsComputedByMe()
731 //=======================================================================
733 void StdMeshers_RadialQuadrangle_1D2D::SubmeshRestored(SMESH_subMesh* faceSubMesh)
735 if ( !faceSubMesh->IsEmpty() )
737 for ( TopExp_Explorer e( faceSubMesh->GetSubShape(), TopAbs_EDGE ); e.More(); e.Next() )
739 markEdgeAsComputedByMe( TopoDS::Edge( e.Current() ), faceSubMesh );
744 //=======================================================================
747 //=======================================================================
749 bool StdMeshers_RadialQuadrangle_1D2D::Compute(SMESH_Mesh& aMesh,
750 const TopoDS_Shape& aShape)
752 SMESH_MesherHelper helper( aMesh );
753 StdMeshers_Quadrangle_2D::myHelper = & helper;
754 StdMeshers_Quadrangle_2D::myNeedSmooth = false;
755 StdMeshers_Quadrangle_2D::myCheckOri = false;
756 StdMeshers_Quadrangle_2D::myQuadList.clear();
758 StdMeshers_FaceSidePtr circSide, linSide1, linSide2;
759 int nbSides = analyseFace( aShape, &aMesh, circSide, linSide1, linSide2 );
760 if( nbSides > 3 || nbSides < 1 )
761 return error("The face must be a full ellipse or a part of ellipse (i.e. the number "
762 "of edges is less or equal to 3 and one of them is an ellipse curve)");
764 // get not yet computed EDGEs
765 list< TopoDS_Edge > emptyEdges;
766 for ( TopExp_Explorer e( aShape, TopAbs_EDGE ); e.More(); e.Next() )
768 if ( aMesh.GetSubMesh( e.Current() )->IsEmpty() )
769 emptyEdges.push_back( TopoDS::Edge( e.Current() ));
772 TNodeDistributor* algo1d = TNodeDistributor::GetDistributor(aMesh);
774 if ( !algo1d->ComputeCircularEdge( aMesh, circSide ))
775 return error( algo1d->GetComputeError() );
778 TopoDS_Face F = TopoDS::Face(aShape);
779 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
781 myHelper->IsQuadraticSubMesh( aShape );
782 myHelper->SetElementsOnShape( true );
784 vector< double > layerPositions; // [0,1]
786 const SMDS_MeshNode* centerNode = 0;
787 gp_Pnt2d centerUV(0,0);
789 // ------------------------------------------------------------------------------------------
790 if ( nbSides == 1 ) // full ellipse
792 const SMDS_MeshNode* circNode;
793 TopoDS_Edge linEdge = makeEdgeToCenter( circSide, F, circNode );
795 StdMeshers_FaceSidePtr tmpSide =
796 StdMeshers_FaceSide::New( F, linEdge, &aMesh, /*isFrw=*/true, /*skipMedium=*/true );
798 if ( !computeLayerPositions( tmpSide, layerPositions ))
801 UVPtStructVec nodes( layerPositions.size() );
802 nodes[0].node = circNode;
803 for ( size_t i = 0; i < layerPositions.size(); ++i )
805 gp_Pnt2d uv = tmpSide->Value2d( layerPositions[i] );
806 gp_Pnt xyz = S->Value( uv.X(), uv.Y() );
808 nodes[ i ].SetUV( uv.XY() );
809 nodes[ i ].normParam = layerPositions[i];
811 nodes[ i ].node = myHelper->AddNode( xyz.X(), xyz.Y(), xyz.Z(), 0, uv.X(), uv.Y() );
814 linSide1 = StdMeshers_FaceSide::New( nodes );
815 linSide2 = StdMeshers_FaceSide::New( nodes );
817 centerNode = nodes.back().node;
818 centerUV = nodes.back().UV();
820 // ------------------------------------------------------------------------------------------
821 else if ( nbSides == 2 && linSide1->Edge(0).Orientation() == TopAbs_INTERNAL )
823 // full ellipse with an internal radial side
825 // eliminate INTERNAL orientation
826 list< TopoDS_Edge > edges;
827 for ( int iE = 0; iE < linSide1->NbEdges(); ++iE )
829 edges.push_back( linSide1->Edge( iE ));
830 edges.back().Orientation( TopAbs_FORWARD );
833 // orient the internal side
834 bool isVIn0Shared = false;
835 TopoDS_Vertex vIn0 = myHelper->IthVertex( 0, edges.front() );
836 for ( int iE = 0; iE < circSide->NbEdges() && !isVIn0Shared; ++iE )
837 isVIn0Shared = vIn0.IsSame( circSide->FirstVertex( iE ));
839 linSide1 = StdMeshers_FaceSide::New( F, edges, &aMesh,
840 /*isFrw=*/isVIn0Shared, /*skipMedium=*/true );
843 if ( !computeLayerPositions( linSide1, layerPositions, &nbMeshedEdges ))
846 // merge existing nodes with new nodes at layerPositions into a UVPtStructVec
848 if ( nbMeshedEdges != linSide1->NbEdges() )
849 makeMissingMesh( linSide1, nodes, layerPositions, myHelper );
851 nodes = linSide1->GetUVPtStruct();
853 linSide1 = StdMeshers_FaceSide::New( nodes );
854 linSide2 = StdMeshers_FaceSide::New( nodes );
856 centerNode = nodes.back().node;
857 centerUV = nodes.back().UV();
859 // ------------------------------------------------------------------------------------------
860 else if ( nbSides == 2 )
862 // find positions of layers for the first half of linSide1
864 if ( !computeLayerPositions( linSide1, layerPositions, &nbMeshedEdges, /*useHalf=*/true ))
867 // make positions for the whole linSide1
868 for ( size_t i = 0; i < layerPositions.size(); ++i )
870 layerPositions[i] *= 0.5;
872 layerPositions.reserve( layerPositions.size() * 2 );
873 for ( int nb = layerPositions.size()-1; nb > 0; --nb )
874 layerPositions.push_back( layerPositions.back() + layerPositions[nb] - layerPositions[nb-1] );
876 // merge existing nodes with new nodes at layerPositions into a UVPtStructVec
878 if ( nbMeshedEdges != linSide1->NbEdges() )
879 makeMissingMesh( linSide1, nodes, layerPositions, myHelper );
881 nodes = linSide1->GetUVPtStruct();
883 // find a central node
885 while ( nodes[ i ].normParam < 0.5 ) ++i;
886 if (( nodes[ i ].normParam - 0.5 ) > ( 0.5 - nodes[ i-1 ].normParam )) --i;
888 // distribute nodes between two linear sides
889 UVPtStructVec nodes2( nodes.rbegin(), nodes.rbegin() + nodes.size() - i );
890 nodes.resize( i + 1 );
892 linSide1 = StdMeshers_FaceSide::New( nodes );
893 linSide2 = StdMeshers_FaceSide::New( nodes2 );
895 centerNode = nodes.back().node;
896 centerUV = nodes.back().UV();
898 // ------------------------------------------------------------------------------------------
901 // one curve must be a part of ellipse and 2 other curves must be segments of line
903 int nbMeshedEdges1, nbMeshedEdges2;
904 vector< double > layerPositions2;
905 bool ok1 = computeLayerPositions( linSide1, layerPositions, &nbMeshedEdges1 );
906 bool ok2 = computeLayerPositions( linSide2, layerPositions2, &nbMeshedEdges2 );
910 bool linSide1Computed = ( nbMeshedEdges1 == linSide1->NbEdges() );
911 bool linSide2Computed = ( nbMeshedEdges2 == linSide2->NbEdges() );
915 if ( linSide1Computed && !linSide2Computed )
917 // use layer positions of linSide1 to mesh linSide2
918 makeMissingMesh( linSide2, nodes, layerPositions, myHelper );
919 linSide2 = StdMeshers_FaceSide::New( nodes );
921 else if ( linSide2Computed && !linSide1Computed )
923 // use layer positions of linSide2 to mesh linSide1
924 makeMissingMesh( linSide1, nodes, layerPositions2, myHelper );
925 linSide1 = StdMeshers_FaceSide::New( nodes );
927 else if ( !linSide2Computed && !linSide1Computed )
929 // use layer positions of a longer side to mesh the shorter side
930 vector< double >& lp =
931 ( linSide1->Length() > linSide2->Length() ) ? layerPositions : layerPositions2;
933 makeMissingMesh( linSide1, nodes, lp, myHelper );
934 linSide1 = StdMeshers_FaceSide::New( nodes );
935 makeMissingMesh( linSide2, nodes, lp, myHelper );
936 linSide2 = StdMeshers_FaceSide::New( nodes );
939 const UVPtStructVec& nodes2 = linSide2->GetUVPtStruct();
940 centerNode = nodes2.back().node;
941 centerUV = nodes2.back().UV();
944 list< TopoDS_Edge >::iterator ee = emptyEdges.begin();
945 for ( ; ee != emptyEdges.end(); ++ee )
946 markEdgeAsComputedByMe( *ee, aMesh.GetSubMesh( F ));
948 circSide->GetUVPtStruct(); // let sides take into account just computed nodes
949 linSide1->GetUVPtStruct();
950 linSide2->GetUVPtStruct();
952 FaceQuadStruct::Ptr quad( new FaceQuadStruct );
953 quad->side.resize( 4 );
954 quad->side[0] = circSide;
955 quad->side[1] = linSide1;
956 quad->side[2] = StdMeshers_FaceSide::New( circSide.get(), centerNode, ¢erUV );
957 quad->side[3] = linSide2;
959 myQuadList.push_back( quad );
961 // create quadrangles
963 if ( linSide1->NbPoints() == linSide2->NbPoints() )
964 ok = StdMeshers_Quadrangle_2D::computeQuadDominant( aMesh, F, quad );
966 ok = StdMeshers_Quadrangle_2D::computeTriangles( aMesh, F, quad );
968 StdMeshers_Quadrangle_2D::myHelper = 0;
973 //================================================================================
975 * \brief Compute nodes on the radial edge
976 * \retval int - nb of segments on the linSide
978 //================================================================================
980 int StdMeshers_RadialQuadrangle_1D2D::computeLayerPositions(StdMeshers_FaceSidePtr linSide,
981 vector< double > & positions,
985 // First, try to compute positions of layers
989 SMESH_Mesh * mesh = myHelper->GetMesh();
991 const SMESH_Hypothesis* hyp1D = myDistributionHypo ? myDistributionHypo->GetLayerDistribution() : 0;
992 int nbLayers = myNbLayerHypo ? myNbLayerHypo->GetNumberOfLayers() : 0;
994 if ( !hyp1D && !nbLayers )
996 // No own algo hypotheses assigned, so first try to find any 1D hypothesis.
997 // find a hyp usable by TNodeDistributor
998 TopoDS_Shape edge = linSide->Edge(0);
999 const SMESH_HypoFilter* hypKind =
1000 TNodeDistributor::GetDistributor(*mesh)->GetCompatibleHypoFilter(/*ignoreAux=*/true);
1001 hyp1D = mesh->GetHypothesis( edge, *hypKind, /*fromAncestors=*/true);
1003 if ( hyp1D ) // try to compute with hyp1D
1005 BRepAdaptor_CompCurve* curve = linSide->GetCurve3d();
1006 SMESHUtils::Deleter< BRepAdaptor_CompCurve > delCurve( curve );
1007 double f = curve->FirstParameter();
1008 double l = curve->LastParameter();
1011 l = 0.5 * ( f + l ); // first part of linSide is used
1013 if ( !TNodeDistributor::GetDistributor(*mesh)->Compute( positions, linSide->Edge(0),
1014 *curve, f, l, *mesh, hyp1D ))
1016 if ( myDistributionHypo ) { // bad hyp assigned
1017 return error( TNodeDistributor::GetDistributor(*mesh)->GetComputeError() );
1020 // bad hyp found, its Ok, lets try with default nb of segments
1025 if ( positions.empty() ) // try to use nb of layers
1028 nbLayers = _gen->GetDefaultNbSegments();
1032 positions.resize( nbLayers + 1 );
1033 for ( int z = 0; z < nbLayers; ++z )
1034 positions[ z ] = double( z )/ double( nbLayers );
1035 positions.back() = 1;
1039 // Second, check presence of a mesh built by other algo on linSide
1041 int nbEdgesComputed = 0;
1042 for ( int i = 0; i < linSide->NbEdges(); ++i )
1044 nbEdgesComputed += ( !mesh->GetSubMesh( linSide->Edge(i))->IsEmpty() );
1047 if ( nbEdgesComputed == linSide->NbEdges() )
1049 const UVPtStructVec& points = linSide->GetUVPtStruct();
1050 if ( points.size() >= 2 )
1052 positions.resize( points.size() );
1053 for ( size_t i = 0; i < points.size(); ++i )
1054 positions[ i ] = points[i].normParam;
1058 if ( nbMeshedEdges ) *nbMeshedEdges = nbEdgesComputed;
1060 return positions.size();
1064 //=======================================================================
1065 //function : Evaluate
1067 //=======================================================================
1069 bool StdMeshers_RadialQuadrangle_1D2D::Evaluate(SMESH_Mesh& aMesh,
1070 const TopoDS_Shape& aShape,
1071 MapShapeNbElems& aResMap)
1073 if( aShape.ShapeType() != TopAbs_FACE ) {
1076 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
1077 if( aResMap.count(sm) )
1080 vector<int>& aResVec =
1081 aResMap.insert( make_pair(sm, vector<int>(SMDSEntity_Last,0))).first->second;
1083 myHelper = new SMESH_MesherHelper( aMesh );
1084 myHelper->SetSubShape( aShape );
1085 SMESHUtils::Deleter<SMESH_MesherHelper> helperDeleter( myHelper );
1087 TNodeDistributor* algo1d = TNodeDistributor::GetDistributor(aMesh);
1089 StdMeshers_FaceSidePtr circSide, linSide1, linSide2;
1090 int nbSides = analyseFace( aShape, &aMesh, circSide, linSide1, linSide2 );
1091 if( nbSides > 3 || nbSides < 1 )
1094 if ( algo1d->EvaluateCircularEdge( aMesh, circSide, aResMap ))
1097 vector< double > layerPositions; // [0,1]
1099 // ------------------------------------------------------------------------------------------
1102 const TopoDS_Face& F = TopoDS::Face( aShape );
1104 const SMDS_MeshNode* circNode;
1105 TopoDS_Edge linEdge = makeEdgeToCenter( circSide, F, circNode );
1107 StdMeshers_FaceSidePtr tmpSide =
1108 StdMeshers_FaceSide::New( F, linEdge, &aMesh, /*isFrw=*/true, /*skipMedium=*/true );
1110 if ( !computeLayerPositions( tmpSide, layerPositions ))
1113 // ------------------------------------------------------------------------------------------
1114 else if ( nbSides == 2 && linSide1->Edge(0).Orientation() == TopAbs_INTERNAL )
1116 if ( !computeLayerPositions( linSide1, layerPositions ))
1119 // ------------------------------------------------------------------------------------------
1120 else if ( nbSides == 2 )
1122 // find positions of layers for the first half of linSide1
1123 if ( !computeLayerPositions( linSide1, layerPositions, 0, /*useHalf=*/true ))
1126 // ------------------------------------------------------------------------------------------
1127 else // nbSides == 3
1129 if ( !computeLayerPositions(( linSide1->Length() > linSide2->Length() ) ? linSide1 : linSide2,
1134 bool isQuadratic = false;
1135 for ( TopExp_Explorer edge( aShape, TopAbs_EDGE ); edge.More() && !isQuadratic ; edge.Next() )
1137 sm = aMesh.GetSubMesh( edge.Current() );
1138 vector<int>& nbElems = aResMap[ sm ];
1139 if ( SMDSEntity_Quad_Edge < (int) nbElems.size() )
1140 isQuadratic = nbElems[ SMDSEntity_Quad_Edge ];
1143 int nbCircSegments = 0;
1144 for ( int iE = 0; iE < circSide->NbEdges(); ++iE )
1146 sm = aMesh.GetSubMesh( circSide->Edge( iE ));
1147 vector<int>& nbElems = aResMap[ sm ];
1148 if ( SMDSEntity_Quad_Edge < (int) nbElems.size() )
1149 nbCircSegments += ( nbElems[ SMDSEntity_Edge ] + nbElems[ SMDSEntity_Quad_Edge ]);
1152 int nbQuads = nbCircSegments * ( layerPositions.size() - 1 );
1153 int nbTria = nbCircSegments;
1154 int nbNodes = ( nbCircSegments - 1 ) * ( layerPositions.size() - 2 );
1157 nbNodes += (( nbCircSegments - 1 ) * ( layerPositions.size() - 1 ) + // radial
1158 ( nbCircSegments ) * ( layerPositions.size() - 2 )); // circular
1159 aResVec[SMDSEntity_Quad_Triangle ] = nbTria;
1160 aResVec[SMDSEntity_Quad_Quadrangle] = nbQuads;
1164 aResVec[SMDSEntity_Triangle ] = nbTria;
1165 aResVec[SMDSEntity_Quadrangle] = nbQuads;
1167 aResVec[SMDSEntity_Node] = nbNodes;
1171 // evaluation for linSides
1172 vector<int> aResVec(SMDSEntity_Last, 0);
1173 if ( isQuadratic ) {
1174 aResVec[SMDSEntity_Node ] = 2 * ( layerPositions.size() - 1 ) + 1;
1175 aResVec[SMDSEntity_Quad_Edge] = layerPositions.size() - 1;
1178 aResVec[SMDSEntity_Node] = layerPositions.size() - 2;
1179 aResVec[SMDSEntity_Edge] = layerPositions.size() - 1;
1181 sm = aMesh.GetSubMesh( linSide1->Edge(0) );
1182 aResMap[sm] = aResVec;
1185 sm = aMesh.GetSubMesh( linSide2->Edge(0) );
1186 aResMap[sm] = aResVec;
1193 //================================================================================
1195 * \brief Return true if the algorithm can compute mesh on this shape
1197 //================================================================================
1199 bool StdMeshers_RadialQuadrangle_1D2D::IsApplicable( const TopoDS_Shape & aShape, bool toCheckAll )
1201 int nbFoundFaces = 0;
1202 for (TopExp_Explorer exp( aShape, TopAbs_FACE ); exp.More(); exp.Next(), ++nbFoundFaces )
1204 StdMeshers_FaceSidePtr circSide, linSide1, linSide2;
1205 int nbSides = analyseFace( aShape, NULL, circSide, linSide1, linSide2 );
1206 bool ok = ( 0 < nbSides && nbSides <= 3 &&
1207 isCornerInsideCircle( circSide, linSide1, linSide2 ));
1208 if( toCheckAll && !ok ) return false;
1209 if( !toCheckAll && ok ) return true;
1211 if( toCheckAll && nbFoundFaces != 0 ) return true;