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_ViscousLayers.cxx
21 // Created : Wed Dec 1 15:15:34 2010
22 // Author : Edward AGAPOV (eap)
24 #include "StdMeshers_ViscousLayers.hxx"
26 #include "SMDS_EdgePosition.hxx"
27 #include "SMDS_FaceOfNodes.hxx"
28 #include "SMDS_FacePosition.hxx"
29 #include "SMDS_MeshNode.hxx"
30 #include "SMDS_SetIterator.hxx"
31 #include "SMESHDS_Group.hxx"
32 #include "SMESHDS_Hypothesis.hxx"
33 #include "SMESH_Algo.hxx"
34 #include "SMESH_ComputeError.hxx"
35 #include "SMESH_ControlsDef.hxx"
36 #include "SMESH_Gen.hxx"
37 #include "SMESH_Group.hxx"
38 #include "SMESH_HypoFilter.hxx"
39 #include "SMESH_Mesh.hxx"
40 #include "SMESH_MeshAlgos.hxx"
41 #include "SMESH_MesherHelper.hxx"
42 #include "SMESH_ProxyMesh.hxx"
43 #include "SMESH_subMesh.hxx"
44 #include "SMESH_subMeshEventListener.hxx"
45 #include "StdMeshers_FaceSide.hxx"
46 #include "StdMeshers_ViscousLayers2D.hxx"
48 #include <Adaptor3d_HSurface.hxx>
49 #include <BRepAdaptor_Curve.hxx>
50 #include <BRepAdaptor_Curve2d.hxx>
51 #include <BRepAdaptor_Surface.hxx>
52 //#include <BRepLProp_CLProps.hxx>
53 #include <BRepLProp_SLProps.hxx>
54 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
55 #include <BRep_Tool.hxx>
56 #include <Bnd_B2d.hxx>
57 #include <Bnd_B3d.hxx>
59 #include <GCPnts_AbscissaPoint.hxx>
60 #include <GCPnts_TangentialDeflection.hxx>
61 #include <Geom2d_Circle.hxx>
62 #include <Geom2d_Line.hxx>
63 #include <Geom2d_TrimmedCurve.hxx>
64 #include <GeomAdaptor_Curve.hxx>
65 #include <GeomLib.hxx>
66 #include <Geom_Circle.hxx>
67 #include <Geom_Curve.hxx>
68 #include <Geom_Line.hxx>
69 #include <Geom_TrimmedCurve.hxx>
70 #include <Precision.hxx>
71 #include <Standard_ErrorHandler.hxx>
72 #include <Standard_Failure.hxx>
73 #include <TColStd_Array1OfReal.hxx>
75 #include <TopExp_Explorer.hxx>
76 #include <TopTools_IndexedMapOfShape.hxx>
77 #include <TopTools_ListOfShape.hxx>
78 #include <TopTools_MapIteratorOfMapOfShape.hxx>
79 #include <TopTools_MapOfShape.hxx>
81 #include <TopoDS_Edge.hxx>
82 #include <TopoDS_Face.hxx>
83 #include <TopoDS_Vertex.hxx>
85 #include <gp_Cone.hxx>
86 #include <gp_Sphere.hxx>
98 //#define __NOT_INVALIDATE_BAD_SMOOTH
101 #define INCREMENTAL_SMOOTH // smooth only if min angle is too small
102 #define BLOCK_INFLATION // of individual _LayerEdge's
103 #define OLD_NEF_POLYGON
107 //================================================================================
112 enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
114 const double theMinSmoothCosin = 0.1;
115 const double theSmoothThickToElemSizeRatio = 0.3;
116 const double theMinSmoothTriaAngle = 30;
117 const double theMinSmoothQuadAngle = 45;
119 // what part of thickness is allowed till intersection
120 // (defined by SALOME_TESTS/Grids/smesh/viscous_layers_00/A5)
121 const double theThickToIntersection = 1.5;
123 bool needSmoothing( double cosin, double tgtThick, double elemSize )
125 return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
127 double getSmoothingThickness( double cosin, double elemSize )
129 return theSmoothThickToElemSizeRatio * elemSize / cosin;
133 * \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
134 * It is stored in a SMESH_subMesh of the SOLID as SMESH_subMeshEventListenerData
136 struct _MeshOfSolid : public SMESH_ProxyMesh,
137 public SMESH_subMeshEventListenerData
139 bool _n2nMapComputed;
140 SMESH_ComputeErrorPtr _warning;
142 _MeshOfSolid( SMESH_Mesh* mesh)
143 :SMESH_subMeshEventListenerData( /*isDeletable=*/true),_n2nMapComputed(false)
145 SMESH_ProxyMesh::setMesh( *mesh );
148 // returns submesh for a geom face
149 SMESH_ProxyMesh::SubMesh* getFaceSubM(const TopoDS_Face& F, bool create=false)
151 TGeomID i = SMESH_ProxyMesh::shapeIndex(F);
152 return create ? SMESH_ProxyMesh::getProxySubMesh(i) : findProxySubMesh(i);
154 void setNode2Node(const SMDS_MeshNode* srcNode,
155 const SMDS_MeshNode* proxyNode,
156 const SMESH_ProxyMesh::SubMesh* subMesh)
158 SMESH_ProxyMesh::setNode2Node( srcNode,proxyNode,subMesh);
161 //--------------------------------------------------------------------------------
163 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
164 * It is used to clear an inferior dim sub-meshes modified by viscous layers
166 class _ShrinkShapeListener : SMESH_subMeshEventListener
168 _ShrinkShapeListener()
169 : SMESH_subMeshEventListener(/*isDeletable=*/false,
170 "StdMeshers_ViscousLayers::_ShrinkShapeListener") {}
172 static SMESH_subMeshEventListener* Get() { static _ShrinkShapeListener l; return &l; }
173 virtual void ProcessEvent(const int event,
175 SMESH_subMesh* solidSM,
176 SMESH_subMeshEventListenerData* data,
177 const SMESH_Hypothesis* hyp)
179 if ( SMESH_subMesh::COMPUTE_EVENT == eventType && solidSM->IsEmpty() && data )
181 SMESH_subMeshEventListener::ProcessEvent(event,eventType,solidSM,data,hyp);
185 //--------------------------------------------------------------------------------
187 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
188 * It is used to store data computed by _ViscousBuilder for a sub-mesh and to
189 * delete the data as soon as it has been used
191 class _ViscousListener : SMESH_subMeshEventListener
194 SMESH_subMeshEventListener(/*isDeletable=*/false,
195 "StdMeshers_ViscousLayers::_ViscousListener") {}
196 static SMESH_subMeshEventListener* Get() { static _ViscousListener l; return &l; }
198 virtual void ProcessEvent(const int event,
200 SMESH_subMesh* subMesh,
201 SMESH_subMeshEventListenerData* data,
202 const SMESH_Hypothesis* hyp)
204 if (( SMESH_subMesh::COMPUTE_EVENT == eventType ) &&
205 ( SMESH_subMesh::CHECK_COMPUTE_STATE != event &&
206 SMESH_subMesh::SUBMESH_COMPUTED != event ))
208 // delete SMESH_ProxyMesh containing temporary faces
209 subMesh->DeleteEventListener( this );
212 // Finds or creates proxy mesh of the solid
213 static _MeshOfSolid* GetSolidMesh(SMESH_Mesh* mesh,
214 const TopoDS_Shape& solid,
217 if ( !mesh ) return 0;
218 SMESH_subMesh* sm = mesh->GetSubMesh(solid);
219 _MeshOfSolid* data = (_MeshOfSolid*) sm->GetEventListenerData( Get() );
220 if ( !data && toCreate )
222 data = new _MeshOfSolid(mesh);
223 data->mySubMeshes.push_back( sm ); // to find SOLID by _MeshOfSolid
224 sm->SetEventListener( Get(), data, sm );
228 // Removes proxy mesh of the solid
229 static void RemoveSolidMesh(SMESH_Mesh* mesh, const TopoDS_Shape& solid)
231 mesh->GetSubMesh(solid)->DeleteEventListener( _ViscousListener::Get() );
235 //================================================================================
237 * \brief sets a sub-mesh event listener to clear sub-meshes of sub-shapes of
238 * the main shape when sub-mesh of the main shape is cleared,
239 * for example to clear sub-meshes of FACEs when sub-mesh of a SOLID
242 //================================================================================
244 void ToClearSubWithMain( SMESH_subMesh* sub, const TopoDS_Shape& main)
246 SMESH_subMesh* mainSM = sub->GetFather()->GetSubMesh( main );
247 SMESH_subMeshEventListenerData* data =
248 mainSM->GetEventListenerData( _ShrinkShapeListener::Get());
251 if ( find( data->mySubMeshes.begin(), data->mySubMeshes.end(), sub ) ==
252 data->mySubMeshes.end())
253 data->mySubMeshes.push_back( sub );
257 data = SMESH_subMeshEventListenerData::MakeData( /*dependent=*/sub );
258 sub->SetEventListener( _ShrinkShapeListener::Get(), data, /*whereToListenTo=*/mainSM );
262 //--------------------------------------------------------------------------------
264 * \brief Simplex (triangle or tetrahedron) based on 1 (tria) or 2 (tet) nodes of
265 * _LayerEdge and 2 nodes of the mesh surface beening smoothed.
266 * The class is used to check validity of face or volumes around a smoothed node;
267 * it stores only 2 nodes as the other nodes are stored by _LayerEdge.
271 const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
272 const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
273 _Simplex(const SMDS_MeshNode* nPrev=0,
274 const SMDS_MeshNode* nNext=0,
275 const SMDS_MeshNode* nOpp=0)
276 : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
277 bool IsForward(const gp_XYZ* pntSrc, const gp_XYZ* pntTgt, double& vol) const
279 const double M[3][3] =
280 {{ _nNext->X() - pntSrc->X(), _nNext->Y() - pntSrc->Y(), _nNext->Z() - pntSrc->Z() },
281 { pntTgt->X() - pntSrc->X(), pntTgt->Y() - pntSrc->Y(), pntTgt->Z() - pntSrc->Z() },
282 { _nPrev->X() - pntSrc->X(), _nPrev->Y() - pntSrc->Y(), _nPrev->Z() - pntSrc->Z() }};
283 vol = ( + M[0][0] * M[1][1] * M[2][2]
284 + M[0][1] * M[1][2] * M[2][0]
285 + M[0][2] * M[1][0] * M[2][1]
286 - M[0][0] * M[1][2] * M[2][1]
287 - M[0][1] * M[1][0] * M[2][2]
288 - M[0][2] * M[1][1] * M[2][0]);
291 bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ& pTgt, double& vol) const
293 SMESH_TNodeXYZ pSrc( nSrc );
294 return IsForward( &pSrc, &pTgt, vol );
296 bool IsForward(const gp_XY& tgtUV,
297 const SMDS_MeshNode* smoothedNode,
298 const TopoDS_Face& face,
299 SMESH_MesherHelper& helper,
300 const double refSign) const
302 gp_XY prevUV = helper.GetNodeUV( face, _nPrev, smoothedNode );
303 gp_XY nextUV = helper.GetNodeUV( face, _nNext, smoothedNode );
304 gp_Vec2d v1( tgtUV, prevUV ), v2( tgtUV, nextUV );
306 return d*refSign > 1e-100;
308 bool IsMinAngleOK( const gp_XYZ& pTgt, double& minAngle ) const
310 SMESH_TNodeXYZ pPrev( _nPrev ), pNext( _nNext );
311 if ( !_nOpp ) // triangle
313 gp_Vec tp( pPrev - pTgt ), pn( pNext - pPrev ), nt( pTgt - pNext );
314 double tp2 = tp.SquareMagnitude();
315 double pn2 = pn.SquareMagnitude();
316 double nt2 = nt.SquareMagnitude();
318 if ( tp2 < pn2 && tp2 < nt2 )
319 minAngle = ( nt * -pn ) * ( nt * -pn ) / nt2 / pn2;
320 else if ( pn2 < nt2 )
321 minAngle = ( tp * -nt ) * ( tp * -nt ) / tp2 / nt2;
323 minAngle = ( pn * -tp ) * ( pn * -tp ) / pn2 / tp2;
325 static double theMaxCos2 = ( Cos( theMinSmoothTriaAngle * M_PI / 180. ) *
326 Cos( theMinSmoothTriaAngle * M_PI / 180. ));
327 return minAngle < theMaxCos2;
331 SMESH_TNodeXYZ pOpp( _nOpp );
332 gp_Vec tp( pPrev - pTgt ), po( pOpp - pPrev ), on( pNext - pOpp), nt( pTgt - pNext );
333 double tp2 = tp.SquareMagnitude();
334 double po2 = po.SquareMagnitude();
335 double on2 = on.SquareMagnitude();
336 double nt2 = nt.SquareMagnitude();
337 minAngle = Max( Max((( tp * -nt ) * ( tp * -nt ) / tp2 / nt2 ),
338 (( po * -tp ) * ( po * -tp ) / po2 / tp2 )),
339 Max((( on * -po ) * ( on * -po ) / on2 / po2 ),
340 (( nt * -on ) * ( nt * -on ) / nt2 / on2 )));
342 static double theMaxCos2 = ( Cos( theMinSmoothQuadAngle * M_PI / 180. ) *
343 Cos( theMinSmoothQuadAngle * M_PI / 180. ));
344 return minAngle < theMaxCos2;
347 bool IsNeighbour(const _Simplex& other) const
349 return _nPrev == other._nNext || _nNext == other._nPrev;
351 bool Includes( const SMDS_MeshNode* node ) const { return _nPrev == node || _nNext == node; }
352 static void GetSimplices( const SMDS_MeshNode* node,
353 vector<_Simplex>& simplices,
354 const set<TGeomID>& ingnoreShapes,
355 const _SolidData* dataToCheckOri = 0,
356 const bool toSort = false);
357 static void SortSimplices(vector<_Simplex>& simplices);
359 //--------------------------------------------------------------------------------
361 * Structure used to take into account surface curvature while smoothing
366 double _k; // factor to correct node smoothed position
367 double _h2lenRatio; // avgNormProj / (2*avgDist)
368 gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
370 static _Curvature* New( double avgNormProj, double avgDist )
373 if ( fabs( avgNormProj / avgDist ) > 1./200 )
376 c->_r = avgDist * avgDist / avgNormProj;
377 c->_k = avgDist * avgDist / c->_r / c->_r;
378 //c->_k = avgNormProj / c->_r;
379 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
380 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
382 c->_uv.SetCoord( 0., 0. );
386 double lenDelta(double len) const { return _k * ( _r + len ); }
387 double lenDeltaByDist(double dist) const { return dist * _h2lenRatio; }
389 //--------------------------------------------------------------------------------
393 struct _EdgesOnShape;
395 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
397 //--------------------------------------------------------------------------------
399 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
400 * and a node of the most internal layer (_nodes.back())
404 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
406 vector< const SMDS_MeshNode*> _nodes;
408 gp_XYZ _normal; // to boundary of solid
409 vector<gp_XYZ> _pos; // points computed during inflation
410 double _len; // length achived with the last inflation step
411 double _maxLen; // maximal possible length
412 double _cosin; // of angle (_normal ^ surface)
413 double _minAngle; // of _simplices
414 double _lenFactor; // to compute _len taking _cosin into account
417 // simplices connected to the source node (_nodes[0]);
418 // used for smoothing and quality check of _LayerEdge's based on the FACE
419 vector<_Simplex> _simplices;
420 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
421 PSmooFun _smooFunction; // smoothing function
422 _Curvature* _curvature;
423 // data for smoothing of _LayerEdge's based on the EDGE
424 _2NearEdges* _2neibors;
426 enum EFlags { TO_SMOOTH = 1,
427 MOVED = 2, // set by _neibors[i]->SetNewLength()
428 SMOOTHED = 4, // set by this->Smooth()
429 DIFFICULT = 8, // near concave VERTEX
430 ON_CONCAVE_FACE = 16,
431 BLOCKED = 32, // not to inflate any more
432 INTERSECTED = 64, // close intersection with a face found
433 NORMAL_UPDATED = 128,
434 MARKED = 256, // local usage
435 MULTI_NORMAL = 512, // a normal is invisible by some of surrounding faces
436 NEAR_BOUNDARY = 1024,// is near FACE boundary forcing smooth
437 SMOOTHED_C1 = 2048,// is on _eosC1
438 DISTORTED = 4096,// was bad before smoothing
439 RISKY_SWOL = 8192 // SWOL is parallel to a source FACE
441 bool Is ( EFlags f ) const { return _flags & f; }
442 void Set ( EFlags f ) { _flags |= f; }
443 void Unset( EFlags f ) { _flags &= ~f; }
445 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
446 bool SetNewLength2d( Handle(Geom_Surface)& surface,
447 const TopoDS_Face& F,
449 SMESH_MesherHelper& helper );
450 void SetDataByNeighbors( const SMDS_MeshNode* n1,
451 const SMDS_MeshNode* n2,
452 const _EdgesOnShape& eos,
453 SMESH_MesherHelper& helper);
454 void Block( _SolidData& data );
455 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
456 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
457 const TNode2Edge& n2eMap);
458 void SmoothPos( const vector< double >& segLen, const double tol );
459 int Smooth(const int step, const bool isConcaveFace, bool findBest);
460 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
461 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
462 void SmoothWoCheck();
463 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
464 const TopoDS_Face& F,
465 SMESH_MesherHelper& helper);
466 void MoveNearConcaVer( const _EdgesOnShape* eov,
467 const _EdgesOnShape* eos,
469 vector< _LayerEdge* > & badSmooEdges);
470 bool FindIntersection( SMESH_ElementSearcher& searcher,
472 const double& epsilon,
474 const SMDS_MeshElement** face = 0);
475 bool SegTriaInter( const gp_Ax1& lastSegment,
480 const double& epsilon) const;
481 bool SegTriaInter( const gp_Ax1& lastSegment,
482 const SMDS_MeshNode* n0,
483 const SMDS_MeshNode* n1,
484 const SMDS_MeshNode* n2,
486 const double& epsilon) const
487 { return SegTriaInter( lastSegment,
488 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
491 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
492 const gp_XYZ& PrevCheckPos() const { return _pos[ Is( NORMAL_UPDATED ) ? _pos.size()-2 : 0 ]; }
493 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
494 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos ) const;
495 bool IsOnEdge() const { return _2neibors; }
496 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
497 void SetCosin( double cosin );
498 void SetNormal( const gp_XYZ& n ) { _normal = n; }
499 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
500 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
501 void SetSmooLen( double len ) { // set _len at which smoothing is needed
502 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
504 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
506 gp_XYZ smoothLaplacian();
507 gp_XYZ smoothAngular();
508 gp_XYZ smoothLengthWeighted();
509 gp_XYZ smoothCentroidal();
510 gp_XYZ smoothNefPolygon();
512 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
513 static const int theNbSmooFuns = FUN_NB;
514 static PSmooFun _funs[theNbSmooFuns];
515 static const char* _funNames[theNbSmooFuns+1];
516 int smooFunID( PSmooFun fun=0) const;
518 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
519 &_LayerEdge::smoothLengthWeighted,
520 &_LayerEdge::smoothCentroidal,
521 &_LayerEdge::smoothNefPolygon,
522 &_LayerEdge::smoothAngular };
523 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
531 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
533 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
534 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
537 //--------------------------------------------------------------------------------
539 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
543 gp_XY _pos, _dir, _inNorm;
544 bool IsOut( const gp_XY p, const double tol ) const
546 return _inNorm * ( p - _pos ) < -tol;
548 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
550 //const double eps = 1e-10;
551 double D = _dir.Crossed( hp._dir );
552 if ( fabs(D) < std::numeric_limits<double>::min())
554 gp_XY vec21 = _pos - hp._pos;
555 double u = hp._dir.Crossed( vec21 ) / D;
556 intPnt = _pos + _dir * u;
560 //--------------------------------------------------------------------------------
562 * Structure used to smooth a _LayerEdge based on an EDGE.
566 double _wgt [2]; // weights of _nodes
567 _LayerEdge* _edges[2];
569 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
572 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
573 const SMDS_MeshNode* tgtNode(bool is2nd) {
574 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
576 const SMDS_MeshNode* srcNode(bool is2nd) {
577 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
580 std::swap( _wgt [0], _wgt [1] );
581 std::swap( _edges[0], _edges[1] );
583 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
584 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
586 bool include( const _LayerEdge* e ) {
587 return ( _edges[0] == e || _edges[1] == e );
592 //--------------------------------------------------------------------------------
594 * \brief Layers parameters got by averaging several hypotheses
598 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
599 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
603 void Add( const StdMeshers_ViscousLayers* hyp )
608 _nbLayers = hyp->GetNumberLayers();
609 //_thickness += hyp->GetTotalThickness();
610 _thickness = Max( _thickness, hyp->GetTotalThickness() );
611 _stretchFactor += hyp->GetStretchFactor();
612 _method = hyp->GetMethod();
615 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
616 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
617 int GetNumberLayers() const { return _nbLayers; }
618 int GetMethod() const { return _method; }
620 bool UseSurfaceNormal() const
621 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
622 bool ToSmooth() const
623 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
624 bool IsOffsetMethod() const
625 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
628 int _nbLayers, _nbHyps, _method;
629 double _thickness, _stretchFactor;
632 //--------------------------------------------------------------------------------
634 * \brief _LayerEdge's on a shape and other shape data
638 vector< _LayerEdge* > _edges;
642 SMESH_subMesh * _subMesh;
643 // face or edge w/o layer along or near which _edges are inflated
645 bool _isRegularSWOL; // w/o singularities
646 // averaged StdMeshers_ViscousLayers parameters
649 _Smoother1D* _edgeSmoother;
650 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
651 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
653 vector< gp_XYZ > _faceNormals; // if _shape is FACE
654 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
656 Handle(ShapeAnalysis_Surface) _offsetSurf;
657 _LayerEdge* _edgeForOffset;
659 _SolidData* _data; // parent SOLID
661 TopAbs_ShapeEnum ShapeType() const
662 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
663 TopAbs_ShapeEnum SWOLType() const
664 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
665 bool HasC1( const _EdgesOnShape* other ) const
666 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
667 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
668 _SolidData& GetData() const { return *_data; }
670 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0) {}
673 //--------------------------------------------------------------------------------
675 * \brief Convex FACE whose radius of curvature is less than the thickness of
676 * layers. It is used to detect distortion of prisms based on a convex
677 * FACE and to update normals to enable further increasing the thickness
683 // edges whose _simplices are used to detect prism distortion
684 vector< _LayerEdge* > _simplexTestEdges;
686 // map a sub-shape to _SolidData::_edgesOnShape
687 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
691 bool GetCenterOfCurvature( _LayerEdge* ledge,
692 BRepLProp_SLProps& surfProp,
693 SMESH_MesherHelper& helper,
694 gp_Pnt & center ) const;
695 bool CheckPrisms() const;
698 //--------------------------------------------------------------------------------
700 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
701 * at inflation up to the full thickness. A detected collision
702 * is fixed in updateNormals()
704 struct _CollisionEdges
707 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
708 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
709 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
712 //--------------------------------------------------------------------------------
714 * \brief Data of a SOLID
718 typedef const StdMeshers_ViscousLayers* THyp;
720 TGeomID _index; // SOLID id
721 _MeshOfSolid* _proxyMesh;
723 list< TopoDS_Shape > _hypShapes;
724 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
725 set< TGeomID > _reversedFaceIds;
726 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
728 double _stepSize, _stepSizeCoeff, _geomSize;
729 const SMDS_MeshNode* _stepSizeNodes[2];
731 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
733 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
734 map< TGeomID, TNode2Edge* > _s2neMap;
735 // _LayerEdge's with underlying shapes
736 vector< _EdgesOnShape > _edgesOnShape;
738 // key: an id of shape (EDGE or VERTEX) shared by a FACE with
739 // layers and a FACE w/o layers
740 // value: the shape (FACE or EDGE) to shrink mesh on.
741 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
742 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
744 // Convex FACEs whose radius of curvature is less than the thickness of layers
745 map< TGeomID, _ConvexFace > _convexFaces;
747 // shapes (EDGEs and VERTEXes) srink from which is forbidden due to collisions with
748 // the adjacent SOLID
749 set< TGeomID > _noShrinkShapes;
751 int _nbShapesToSmooth;
753 //map< TGeomID,Handle(Geom_Curve)> _edge2curve;
755 vector< _CollisionEdges > _collisionEdges;
756 set< TGeomID > _concaveFaces;
758 double _maxThickness; // of all _hyps
759 double _minThickness; // of all _hyps
761 double _epsilon; // precision for SegTriaInter()
763 SMESH_MesherHelper* _helper;
765 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
767 :_solid(s), _proxyMesh(m), _helper(0) {}
770 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
771 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
773 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
774 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
775 return id2face == _convexFaces.end() ? 0 : & id2face->second;
777 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
778 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
779 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
780 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
782 SMESH_MesherHelper& GetHelper() const { return *_helper; }
785 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
786 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
787 _edgesOnShape[i]._edges[j]->Unset( _LayerEdge::MARKED );
789 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
790 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
792 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
794 //--------------------------------------------------------------------------------
796 * \brief Offset plane used in getNormalByOffset()
802 int _faceIndexNext[2];
803 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
806 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
808 void ComputeIntersectionLine( _OffsetPlane& pln );
809 gp_XYZ GetCommonPoint(bool& isFound) const;
810 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
812 //--------------------------------------------------------------------------------
814 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
816 struct _CentralCurveOnEdge
819 vector< gp_Pnt > _curvaCenters;
820 vector< _LayerEdge* > _ledges;
821 vector< gp_XYZ > _normals; // new normal for each of _ledges
822 vector< double > _segLength2;
825 TopoDS_Face _adjFace;
826 bool _adjFaceToSmooth;
828 void Append( const gp_Pnt& center, _LayerEdge* ledge )
830 if ( _curvaCenters.size() > 0 )
831 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
832 _curvaCenters.push_back( center );
833 _ledges.push_back( ledge );
834 _normals.push_back( ledge->_normal );
836 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
837 void SetShapes( const TopoDS_Edge& edge,
838 const _ConvexFace& convFace,
840 SMESH_MesherHelper& helper);
842 //--------------------------------------------------------------------------------
844 * \brief Data of node on a shrinked FACE
848 const SMDS_MeshNode* _node;
849 vector<_Simplex> _simplices; // for quality check
851 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
853 bool Smooth(int& badNb,
854 Handle(Geom_Surface)& surface,
855 SMESH_MesherHelper& helper,
856 const double refSign,
860 gp_XY computeAngularPos(vector<gp_XY>& uv,
861 const gp_XY& uvToFix,
862 const double refSign );
864 //--------------------------------------------------------------------------------
866 * \brief Builder of viscous layers
868 class _ViscousBuilder
873 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
874 const TopoDS_Shape& shape);
875 // check validity of hypotheses
876 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
877 const TopoDS_Shape& shape );
879 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
880 void RestoreListeners();
882 // computes SMESH_ProxyMesh::SubMesh::_n2n;
883 bool MakeN2NMap( _MeshOfSolid* pm );
887 bool findSolidsWithLayers();
888 bool findFacesWithLayers(const bool onlyWith=false);
889 void getIgnoreFaces(const TopoDS_Shape& solid,
890 const StdMeshers_ViscousLayers* hyp,
891 const TopoDS_Shape& hypShape,
892 set<TGeomID>& ignoreFaces);
893 bool makeLayer(_SolidData& data);
894 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
895 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
896 SMESH_MesherHelper& helper, _SolidData& data);
897 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
898 const TopoDS_Face& face,
899 SMESH_MesherHelper& helper,
901 bool shiftInside=false);
902 bool getFaceNormalAtSingularity(const gp_XY& uv,
903 const TopoDS_Face& face,
904 SMESH_MesherHelper& helper,
906 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
907 gp_XYZ getNormalByOffset( _LayerEdge* edge,
908 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
910 bool findNeiborsOnEdge(const _LayerEdge* edge,
911 const SMDS_MeshNode*& n1,
912 const SMDS_MeshNode*& n2,
915 void findSimplexTestEdges( _SolidData& data,
916 vector< vector<_LayerEdge*> >& edgesByGeom);
917 void computeGeomSize( _SolidData& data );
918 bool findShapesToSmooth( _SolidData& data);
919 void limitStepSizeByCurvature( _SolidData& data );
920 void limitStepSize( _SolidData& data,
921 const SMDS_MeshElement* face,
922 const _LayerEdge* maxCosinEdge );
923 void limitStepSize( _SolidData& data, const double minSize);
924 bool inflate(_SolidData& data);
925 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
926 int invalidateBadSmooth( _SolidData& data,
927 SMESH_MesherHelper& helper,
928 vector< _LayerEdge* >& badSmooEdges,
929 vector< _EdgesOnShape* >& eosC1,
931 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
932 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep, int smooStep=0, bool moveAll=false );
933 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
934 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
935 bool updateNormalsOfConvexFaces( _SolidData& data,
936 SMESH_MesherHelper& helper,
938 void updateNormalsOfC1Vertices( _SolidData& data );
939 bool updateNormalsOfSmoothed( _SolidData& data,
940 SMESH_MesherHelper& helper,
942 const double stepSize );
943 bool isNewNormalOk( _SolidData& data,
945 const gp_XYZ& newNormal);
946 bool refine(_SolidData& data);
948 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
949 SMESH_MesherHelper& helper,
950 const SMESHDS_SubMesh* faceSubMesh );
951 void restoreNoShrink( _LayerEdge& edge ) const;
952 void fixBadFaces(const TopoDS_Face& F,
953 SMESH_MesherHelper& helper,
956 set<const SMDS_MeshNode*> * involvedNodes=NULL);
957 bool addBoundaryElements();
959 bool error( const string& text, int solidID=-1 );
960 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
963 void makeGroupOfLE();
966 SMESH_ComputeErrorPtr _error;
968 vector< _SolidData > _sdVec;
971 //--------------------------------------------------------------------------------
973 * \brief Shrinker of nodes on the EDGE
977 TopoDS_Edge _geomEdge;
978 vector<double> _initU;
979 vector<double> _normPar;
980 vector<const SMDS_MeshNode*> _nodes;
981 const _LayerEdge* _edges[2];
984 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
985 void Compute(bool set3D, SMESH_MesherHelper& helper);
986 void RestoreParams();
987 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
988 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
989 const SMDS_MeshNode* TgtNode( bool is2nd ) const
990 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
991 const SMDS_MeshNode* SrcNode( bool is2nd ) const
992 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
994 //--------------------------------------------------------------------------------
996 * \brief Smoother of _LayerEdge's on EDGE.
1000 struct OffPnt // point of the offsetted EDGE
1002 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1003 double _len; // length reached at previous inflation step
1004 double _param; // on EDGE
1005 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1006 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1008 vector< OffPnt > _offPoints;
1009 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1010 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1011 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1012 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1013 _EdgesOnShape& _eos;
1014 double _curveLen; // length of the EDGE
1016 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1018 SMESH_MesherHelper& helper);
1020 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1021 _EdgesOnShape& eos )
1022 : _anaCurve( curveForSmooth ), _eos( eos )
1025 bool Perform(_SolidData& data,
1026 Handle(ShapeAnalysis_Surface)& surface,
1027 const TopoDS_Face& F,
1028 SMESH_MesherHelper& helper )
1030 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
1034 return smoothAnalyticEdge( data, surface, F, helper );
1036 return smoothComplexEdge ( data, surface, F, helper );
1038 void prepare(_SolidData& data );
1040 bool smoothAnalyticEdge( _SolidData& data,
1041 Handle(ShapeAnalysis_Surface)& surface,
1042 const TopoDS_Face& F,
1043 SMESH_MesherHelper& helper);
1045 bool smoothComplexEdge( _SolidData& data,
1046 Handle(ShapeAnalysis_Surface)& surface,
1047 const TopoDS_Face& F,
1048 SMESH_MesherHelper& helper);
1050 void setNormalOnV( const bool is2nd,
1051 SMESH_MesherHelper& helper);
1053 _LayerEdge* getLEdgeOnV( bool is2nd )
1055 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1057 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1059 //--------------------------------------------------------------------------------
1061 * \brief Class of temporary mesh face.
1062 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1063 * needed because SMESH_ElementSearcher internaly uses set of elements sorted by ID
1065 struct _TmpMeshFace : public SMDS_MeshElement
1067 vector<const SMDS_MeshNode* > _nn;
1068 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1069 int id, int faceID=-1, int idInFace=-1):
1070 SMDS_MeshElement(id), _nn(nodes) { setShapeId(faceID); setIdInShape(idInFace); }
1071 virtual const SMDS_MeshNode* GetNode(const int ind) const { return _nn[ind]; }
1072 virtual SMDSAbs_ElementType GetType() const { return SMDSAbs_Face; }
1073 virtual vtkIdType GetVtkType() const { return -1; }
1074 virtual SMDSAbs_EntityType GetEntityType() const { return SMDSEntity_Last; }
1075 virtual SMDSAbs_GeometryType GetGeomType() const
1076 { return _nn.size() == 3 ? SMDSGeom_TRIANGLE : SMDSGeom_QUADRANGLE; }
1077 virtual SMDS_ElemIteratorPtr elementsIterator(SMDSAbs_ElementType) const
1078 { return SMDS_ElemIteratorPtr( new SMDS_NodeVectorElemIterator( _nn.begin(), _nn.end()));}
1080 //--------------------------------------------------------------------------------
1082 * \brief Class of temporary mesh face storing _LayerEdge it's based on
1084 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1086 _LayerEdge *_le1, *_le2;
1087 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1088 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1090 _nn[0]=_le1->_nodes[0];
1091 _nn[1]=_le1->_nodes.back();
1092 _nn[2]=_le2->_nodes.back();
1093 _nn[3]=_le2->_nodes[0];
1095 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1097 SMESH_TNodeXYZ p0s( _nn[0] );
1098 SMESH_TNodeXYZ p0t( _nn[1] );
1099 SMESH_TNodeXYZ p1t( _nn[2] );
1100 SMESH_TNodeXYZ p1s( _nn[3] );
1101 gp_XYZ v0 = p0t - p0s;
1102 gp_XYZ v1 = p1t - p1s;
1103 gp_XYZ v01 = p1s - p0s;
1104 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1109 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1111 _nn[0]=le1->_nodes[0];
1112 _nn[1]=le1->_nodes.back();
1113 _nn[2]=le2->_nodes.back();
1114 _nn[3]=le2->_nodes[0];
1118 //--------------------------------------------------------------------------------
1120 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1121 * \warning Location of a surface is ignored
1123 struct _NodeCoordHelper
1125 SMESH_MesherHelper& _helper;
1126 const TopoDS_Face& _face;
1127 Handle(Geom_Surface) _surface;
1128 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1130 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1131 : _helper( helper ), _face( F )
1135 TopLoc_Location loc;
1136 _surface = BRep_Tool::Surface( _face, loc );
1138 if ( _surface.IsNull() )
1139 _fun = & _NodeCoordHelper::direct;
1141 _fun = & _NodeCoordHelper::byUV;
1143 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1146 gp_XYZ direct(const SMDS_MeshNode* n) const
1148 return SMESH_TNodeXYZ( n );
1150 gp_XYZ byUV (const SMDS_MeshNode* n) const
1152 gp_XY uv = _helper.GetNodeUV( _face, n );
1153 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1157 //================================================================================
1159 * \brief Check angle between vectors
1161 //================================================================================
1163 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1165 double dot = v1 * v2; // cos * |v1| * |v2|
1166 double l1 = v1.SquareMagnitude();
1167 double l2 = v2.SquareMagnitude();
1168 return (( dot * cos >= 0 ) &&
1169 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1172 } // namespace VISCOUS_3D
1176 //================================================================================
1177 // StdMeshers_ViscousLayers hypothesis
1179 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, int studyId, SMESH_Gen* gen)
1180 :SMESH_Hypothesis(hypId, studyId, gen),
1181 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1182 _method( SURF_OFFSET_SMOOTH )
1184 _name = StdMeshers_ViscousLayers::GetHypType();
1185 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1186 } // --------------------------------------------------------------------------------
1187 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1189 if ( faceIds != _shapeIds )
1190 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1191 if ( _isToIgnoreShapes != toIgnore )
1192 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1193 } // --------------------------------------------------------------------------------
1194 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1196 if ( thickness != _thickness )
1197 _thickness = thickness, NotifySubMeshesHypothesisModification();
1198 } // --------------------------------------------------------------------------------
1199 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1201 if ( _nbLayers != nb )
1202 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1203 } // --------------------------------------------------------------------------------
1204 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1206 if ( _stretchFactor != factor )
1207 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1208 } // --------------------------------------------------------------------------------
1209 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1211 if ( _method != method )
1212 _method = method, NotifySubMeshesHypothesisModification();
1213 } // --------------------------------------------------------------------------------
1214 SMESH_ProxyMesh::Ptr
1215 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1216 const TopoDS_Shape& theShape,
1217 const bool toMakeN2NMap) const
1219 using namespace VISCOUS_3D;
1220 _ViscousBuilder bulder;
1221 SMESH_ComputeErrorPtr err = bulder.Compute( theMesh, theShape );
1222 if ( err && !err->IsOK() )
1223 return SMESH_ProxyMesh::Ptr();
1225 vector<SMESH_ProxyMesh::Ptr> components;
1226 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1227 for ( ; exp.More(); exp.Next() )
1229 if ( _MeshOfSolid* pm =
1230 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1232 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1233 if ( !bulder.MakeN2NMap( pm ))
1234 return SMESH_ProxyMesh::Ptr();
1235 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1236 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1238 if ( pm->_warning && !pm->_warning->IsOK() )
1240 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1241 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1242 if ( !smError || smError->IsOK() )
1243 smError = pm->_warning;
1246 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1248 switch ( components.size() )
1252 case 1: return components[0];
1254 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1256 return SMESH_ProxyMesh::Ptr();
1257 } // --------------------------------------------------------------------------------
1258 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1260 save << " " << _nbLayers
1261 << " " << _thickness
1262 << " " << _stretchFactor
1263 << " " << _shapeIds.size();
1264 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1265 save << " " << _shapeIds[i];
1266 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1267 save << " " << _method;
1269 } // --------------------------------------------------------------------------------
1270 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1272 int nbFaces, faceID, shapeToTreat, method;
1273 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1274 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1275 _shapeIds.push_back( faceID );
1276 if ( load >> shapeToTreat ) {
1277 _isToIgnoreShapes = !shapeToTreat;
1278 if ( load >> method )
1279 _method = (ExtrusionMethod) method;
1282 _isToIgnoreShapes = true; // old behavior
1285 } // --------------------------------------------------------------------------------
1286 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* theMesh,
1287 const TopoDS_Shape& theShape)
1291 } // --------------------------------------------------------------------------------
1292 SMESH_ComputeErrorPtr
1293 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1294 const TopoDS_Shape& theShape,
1295 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1297 VISCOUS_3D::_ViscousBuilder bulder;
1298 SMESH_ComputeErrorPtr err = bulder.CheckHypotheses( theMesh, theShape );
1299 if ( err && !err->IsOK() )
1300 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1302 theStatus = SMESH_Hypothesis::HYP_OK;
1306 // --------------------------------------------------------------------------------
1307 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1310 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1311 return IsToIgnoreShapes() ? !isIn : isIn;
1313 // END StdMeshers_ViscousLayers hypothesis
1314 //================================================================================
1316 namespace VISCOUS_3D
1318 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV )
1322 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1323 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1324 gp_Pnt p = BRep_Tool::Pnt( fromV );
1325 double distF = p.SquareDistance( c->Value( f ));
1326 double distL = p.SquareDistance( c->Value( l ));
1327 c->D1(( distF < distL ? f : l), p, dir );
1328 if ( distL < distF ) dir.Reverse();
1331 //--------------------------------------------------------------------------------
1332 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1333 SMESH_MesherHelper& helper)
1336 double f,l; gp_Pnt p;
1337 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1338 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1339 double u = helper.GetNodeU( E, atNode );
1343 //--------------------------------------------------------------------------------
1344 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1345 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok,
1347 //--------------------------------------------------------------------------------
1348 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1349 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1352 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1355 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1356 return getFaceDir( F, v, node, helper, ok );
1358 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1359 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1360 gp_Pnt p; gp_Vec du, dv, norm;
1361 surface->D1( uv.X(),uv.Y(), p, du,dv );
1364 double u = helper.GetNodeU( fromE, node, 0, &ok );
1366 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1367 if ( o == TopAbs_REVERSED )
1370 gp_Vec dir = norm ^ du;
1372 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1373 helper.IsClosedEdge( fromE ))
1375 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1376 else c->D1( f, p, dv );
1377 if ( o == TopAbs_REVERSED )
1379 gp_Vec dir2 = norm ^ dv;
1380 dir = dir.Normalized() + dir2.Normalized();
1384 //--------------------------------------------------------------------------------
1385 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1386 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1387 bool& ok, double* cosin)
1389 TopoDS_Face faceFrw = F;
1390 faceFrw.Orientation( TopAbs_FORWARD );
1391 //double f,l; TopLoc_Location loc;
1392 TopoDS_Edge edges[2]; // sharing a vertex
1395 TopoDS_Vertex VV[2];
1396 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1397 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1399 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1400 if ( SMESH_Algo::isDegenerated( e )) continue;
1401 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1402 if ( VV[1].IsSame( fromV )) {
1403 nbEdges += edges[ 0 ].IsNull();
1406 else if ( VV[0].IsSame( fromV )) {
1407 nbEdges += edges[ 1 ].IsNull();
1412 gp_XYZ dir(0,0,0), edgeDir[2];
1415 // get dirs of edges going fromV
1417 for ( size_t i = 0; i < nbEdges && ok; ++i )
1419 edgeDir[i] = getEdgeDir( edges[i], fromV );
1420 double size2 = edgeDir[i].SquareModulus();
1421 if (( ok = size2 > numeric_limits<double>::min() ))
1422 edgeDir[i] /= sqrt( size2 );
1424 if ( !ok ) return dir;
1426 // get angle between the 2 edges
1428 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1429 if ( Abs( angle ) < 5 * M_PI/180 )
1431 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1435 dir = edgeDir[0] + edgeDir[1];
1440 double angle = gp_Vec( edgeDir[0] ).Angle( dir );
1441 *cosin = Cos( angle );
1444 else if ( nbEdges == 1 )
1446 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1447 if ( cosin ) *cosin = 1.;
1457 //================================================================================
1459 * \brief Finds concave VERTEXes of a FACE
1461 //================================================================================
1463 bool getConcaveVertices( const TopoDS_Face& F,
1464 SMESH_MesherHelper& helper,
1465 set< TGeomID >* vertices = 0)
1467 // check angles at VERTEXes
1469 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1470 for ( size_t iW = 0; iW < wires.size(); ++iW )
1472 const int nbEdges = wires[iW]->NbEdges();
1473 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1475 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1477 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1478 int iE2 = ( iE1 + 1 ) % nbEdges;
1479 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1480 iE2 = ( iE2 + 1 ) % nbEdges;
1481 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1482 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1483 wires[iW]->Edge( iE2 ), F, V );
1484 if ( angle < -5. * M_PI / 180. )
1488 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1492 return vertices ? !vertices->empty() : false;
1495 //================================================================================
1497 * \brief Returns true if a FACE is bound by a concave EDGE
1499 //================================================================================
1501 bool isConcave( const TopoDS_Face& F,
1502 SMESH_MesherHelper& helper,
1503 set< TGeomID >* vertices = 0 )
1505 bool isConcv = false;
1506 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1508 gp_Vec2d drv1, drv2;
1510 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1511 for ( ; eExp.More(); eExp.Next() )
1513 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1514 if ( SMESH_Algo::isDegenerated( E )) continue;
1515 // check if 2D curve is concave
1516 BRepAdaptor_Curve2d curve( E, F );
1517 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1518 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1519 curve.Intervals( intervals, GeomAbs_C2 );
1520 bool isConvex = true;
1521 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1523 double u1 = intervals( i );
1524 double u2 = intervals( i+1 );
1525 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1526 double cross = drv1 ^ drv2;
1527 if ( E.Orientation() == TopAbs_REVERSED )
1529 isConvex = ( cross > -1e-9 ); // 0.1 );
1533 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1542 // check angles at VERTEXes
1543 if ( getConcaveVertices( F, helper, vertices ))
1549 //================================================================================
1551 * \brief Computes mimimal distance of face in-FACE nodes from an EDGE
1552 * \param [in] face - the mesh face to treat
1553 * \param [in] nodeOnEdge - a node on the EDGE
1554 * \param [out] faceSize - the computed distance
1555 * \return bool - true if faceSize computed
1557 //================================================================================
1559 bool getDistFromEdge( const SMDS_MeshElement* face,
1560 const SMDS_MeshNode* nodeOnEdge,
1563 faceSize = Precision::Infinite();
1566 int nbN = face->NbCornerNodes();
1567 int iOnE = face->GetNodeIndex( nodeOnEdge );
1568 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1569 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1570 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1571 face->GetNode( iNext[1] ) };
1572 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1573 double segLen = -1.;
1574 // look for two neighbor not in-FACE nodes of face
1575 for ( int i = 0; i < 2; ++i )
1577 if ( nNext[i]->GetPosition()->GetDim() != 2 &&
1578 nNext[i]->GetID() < nodeOnEdge->GetID() )
1580 // look for an in-FACE node
1581 for ( int iN = 0; iN < nbN; ++iN )
1583 if ( iN == iOnE || iN == iNext[i] )
1585 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1586 gp_XYZ v = pInFace - segEnd;
1589 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1590 segLen = segVec.Modulus();
1592 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1593 faceSize = Min( faceSize, distToSeg );
1601 //================================================================================
1603 * \brief Return direction of axis or revolution of a surface
1605 //================================================================================
1607 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1610 switch ( surface.GetType() ) {
1613 gp_Cone cone = surface.Cone();
1614 axis = cone.Axis().Direction();
1617 case GeomAbs_Sphere:
1619 gp_Sphere sphere = surface.Sphere();
1620 axis = sphere.Position().Direction();
1623 case GeomAbs_SurfaceOfRevolution:
1625 axis = surface.AxeOfRevolution().Direction();
1628 //case GeomAbs_SurfaceOfExtrusion:
1629 case GeomAbs_OffsetSurface:
1631 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1632 return getRovolutionAxis( base->Surface(), axis );
1634 default: return false;
1639 //--------------------------------------------------------------------------------
1640 // DEBUG. Dump intermediate node positions into a python script
1641 // HOWTO use: run python commands written in a console to see
1642 // construction steps of viscous layers
1647 PyDump(SMESH_Mesh& m) {
1648 int tag = 3 + m.GetId();
1649 const char* fname = "/tmp/viscous.py";
1650 cout << "execfile('"<<fname<<"')"<<endl;
1651 py = new ofstream(fname);
1652 *py << "import SMESH" << endl
1653 << "from salome.smesh import smeshBuilder" << endl
1654 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
1655 << "meshSO = smesh.GetCurrentStudy().FindObjectID('0:1:2:" << tag <<"')" << endl
1656 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1661 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1662 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1663 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1664 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1668 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1670 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1671 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1672 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1673 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1674 void _dumpFunction(const string& fun, int ln)
1675 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1676 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1677 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1678 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1679 void _dumpCmd(const string& txt, int ln)
1680 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1681 void dumpFunctionEnd()
1682 { if (py) *py<< " return"<< endl; }
1683 void dumpChangeNodes( const SMDS_MeshElement* f )
1684 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1685 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1686 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1687 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1691 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} };
1692 #define dumpFunction(f) f
1694 #define dumpMoveComm(n,txt)
1695 #define dumpCmd(txt)
1696 #define dumpFunctionEnd()
1697 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1698 #define debugMsg( txt ) {}
1703 using namespace VISCOUS_3D;
1705 //================================================================================
1707 * \brief Constructor of _ViscousBuilder
1709 //================================================================================
1711 _ViscousBuilder::_ViscousBuilder()
1713 _error = SMESH_ComputeError::New(COMPERR_OK);
1717 //================================================================================
1719 * \brief Stores error description and returns false
1721 //================================================================================
1723 bool _ViscousBuilder::error(const string& text, int solidId )
1725 const string prefix = string("Viscous layers builder: ");
1726 _error->myName = COMPERR_ALGO_FAILED;
1727 _error->myComment = prefix + text;
1730 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1731 if ( !sm && !_sdVec.empty() )
1732 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1733 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1735 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1736 if ( smError && smError->myAlgo )
1737 _error->myAlgo = smError->myAlgo;
1739 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1741 // set KO to all solids
1742 for ( size_t i = 0; i < _sdVec.size(); ++i )
1744 if ( _sdVec[i]._index == solidId )
1746 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1747 if ( !sm->IsEmpty() )
1749 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1750 if ( !smError || smError->IsOK() )
1752 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1753 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1757 makeGroupOfLE(); // debug
1762 //================================================================================
1764 * \brief At study restoration, restore event listeners used to clear an inferior
1765 * dim sub-mesh modified by viscous layers
1767 //================================================================================
1769 void _ViscousBuilder::RestoreListeners()
1774 //================================================================================
1776 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1778 //================================================================================
1780 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1782 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1783 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1784 for ( ; fExp.More(); fExp.Next() )
1786 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1787 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
1789 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
1791 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
1794 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
1795 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
1797 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
1798 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
1799 while( prxIt->more() )
1801 const SMDS_MeshElement* fSrc = srcIt->next();
1802 const SMDS_MeshElement* fPrx = prxIt->next();
1803 if ( fSrc->NbNodes() != fPrx->NbNodes())
1804 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
1805 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
1806 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
1809 pm->_n2nMapComputed = true;
1813 //================================================================================
1815 * \brief Does its job
1817 //================================================================================
1819 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
1820 const TopoDS_Shape& theShape)
1822 // TODO: set priority of solids during Gen::Compute()
1826 // check if proxy mesh already computed
1827 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1829 return error("No SOLID's in theShape"), _error;
1831 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
1832 return SMESH_ComputeErrorPtr(); // everything already computed
1834 PyDump debugDump( theMesh );
1836 // TODO: ignore already computed SOLIDs
1837 if ( !findSolidsWithLayers())
1840 if ( !findFacesWithLayers() )
1843 for ( size_t i = 0; i < _sdVec.size(); ++i )
1845 if ( ! makeLayer(_sdVec[i]) )
1848 if ( _sdVec[i]._n2eMap.size() == 0 )
1851 if ( ! inflate(_sdVec[i]) )
1854 if ( ! refine(_sdVec[i]) )
1860 addBoundaryElements();
1862 makeGroupOfLE(); // debug
1868 //================================================================================
1870 * \brief Check validity of hypotheses
1872 //================================================================================
1874 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
1875 const TopoDS_Shape& shape )
1879 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
1880 return SMESH_ComputeErrorPtr(); // everything already computed
1883 findSolidsWithLayers();
1884 bool ok = findFacesWithLayers( true );
1886 // remove _MeshOfSolid's of _SolidData's
1887 for ( size_t i = 0; i < _sdVec.size(); ++i )
1888 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
1893 return SMESH_ComputeErrorPtr();
1896 //================================================================================
1898 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
1900 //================================================================================
1902 bool _ViscousBuilder::findSolidsWithLayers()
1905 TopTools_IndexedMapOfShape allSolids;
1906 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
1907 _sdVec.reserve( allSolids.Extent());
1909 SMESH_Gen* gen = _mesh->GetGen();
1910 SMESH_HypoFilter filter;
1911 for ( int i = 1; i <= allSolids.Extent(); ++i )
1913 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
1914 SMESH_Algo* algo = gen->GetAlgo( *_mesh, allSolids(i) );
1915 if ( !algo ) continue;
1916 // TODO: check if algo is hidden
1917 const list <const SMESHDS_Hypothesis *> & allHyps =
1918 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
1919 _SolidData* soData = 0;
1920 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
1921 const StdMeshers_ViscousLayers* viscHyp = 0;
1922 for ( ; hyp != allHyps.end(); ++hyp )
1923 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
1925 TopoDS_Shape hypShape;
1926 filter.Init( filter.Is( viscHyp ));
1927 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
1931 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
1934 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
1935 soData = & _sdVec.back();
1936 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
1937 soData->_helper = new SMESH_MesherHelper( *_mesh );
1938 soData->_helper->SetSubShape( allSolids(i) );
1940 soData->_hyps.push_back( viscHyp );
1941 soData->_hypShapes.push_back( hypShape );
1944 if ( _sdVec.empty() )
1946 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
1951 //================================================================================
1955 //================================================================================
1957 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
1959 SMESH_MesherHelper helper( *_mesh );
1960 TopExp_Explorer exp;
1961 TopTools_IndexedMapOfShape solids;
1963 // collect all faces-to-ignore defined by hyp
1964 for ( size_t i = 0; i < _sdVec.size(); ++i )
1966 solids.Add( _sdVec[i]._solid );
1968 // get faces-to-ignore defined by each hyp
1969 typedef const StdMeshers_ViscousLayers* THyp;
1970 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
1971 list< TFacesOfHyp > ignoreFacesOfHyps;
1972 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
1973 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
1974 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
1976 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
1977 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
1980 // fill _SolidData::_face2hyp and check compatibility of hypotheses
1981 const int nbHyps = _sdVec[i]._hyps.size();
1984 // check if two hypotheses define different parameters for the same FACE
1985 list< TFacesOfHyp >::iterator igFacesOfHyp;
1986 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
1988 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
1990 igFacesOfHyp = ignoreFacesOfHyps.begin();
1991 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
1992 if ( ! igFacesOfHyp->first.count( faceID ))
1995 return error(SMESH_Comment("Several hypotheses define "
1996 "Viscous Layers on the face #") << faceID );
1997 hyp = igFacesOfHyp->second;
2000 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2002 _sdVec[i]._ignoreFaceIds.insert( faceID );
2005 // check if two hypotheses define different number of viscous layers for
2006 // adjacent faces of a solid
2007 set< int > nbLayersSet;
2008 igFacesOfHyp = ignoreFacesOfHyps.begin();
2009 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2011 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2013 if ( nbLayersSet.size() > 1 )
2015 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2017 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2018 THyp hyp1 = 0, hyp2 = 0;
2019 while( const TopoDS_Shape* face = fIt->next() )
2021 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2022 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2023 if ( f2h != _sdVec[i]._face2hyp.end() )
2025 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2028 if ( hyp1 && hyp2 &&
2029 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2031 return error("Two hypotheses define different number of "
2032 "viscous layers on adjacent faces");
2036 } // if ( nbHyps > 1 )
2039 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2043 if ( onlyWith ) // is called to check hypotheses compatibility only
2046 // fill _SolidData::_reversedFaceIds
2047 for ( size_t i = 0; i < _sdVec.size(); ++i )
2049 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2050 for ( ; exp.More(); exp.Next() )
2052 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2053 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2054 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2055 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2056 helper.IsReversedSubMesh( face ))
2058 _sdVec[i]._reversedFaceIds.insert( faceID );
2063 // Find faces to shrink mesh on (solution 2 in issue 0020832);
2064 TopTools_IndexedMapOfShape shapes;
2065 for ( size_t i = 0; i < _sdVec.size(); ++i )
2068 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2069 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2071 const TopoDS_Shape& edge = shapes(iE);
2072 // find 2 faces sharing an edge
2074 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE);
2075 while ( fIt->more())
2077 const TopoDS_Shape* f = fIt->next();
2078 if ( helper.IsSubShape( *f, _sdVec[i]._solid))
2079 FF[ int( !FF[0].IsNull()) ] = *f;
2081 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2082 // check presence of layers on them
2084 for ( int j = 0; j < 2; ++j )
2085 ignore[j] = _sdVec[i]._ignoreFaceIds.count ( getMeshDS()->ShapeToIndex( FF[j] ));
2086 if ( ignore[0] == ignore[1] )
2087 continue; // nothing interesting
2088 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ];
2089 // check presence of layers on fWOL within an adjacent SOLID
2090 bool collision = false;
2091 PShapeIteratorPtr sIt = helper.GetAncestors( fWOL, *_mesh, TopAbs_SOLID );
2092 while ( const TopoDS_Shape* solid = sIt->next() )
2093 if ( !solid->IsSame( _sdVec[i]._solid ))
2095 int iSolid = solids.FindIndex( *solid );
2096 int iFace = getMeshDS()->ShapeToIndex( fWOL );
2097 if ( iSolid > 0 && !_sdVec[ iSolid-1 ]._ignoreFaceIds.count( iFace ))
2099 //_sdVec[i]._noShrinkShapes.insert( iFace );
2105 if ( !fWOL.IsNull())
2107 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2108 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2111 // _shrinkShape2Shape will be used to temporary inflate _LayerEdge's based
2112 // on the edge but shrink won't be performed
2113 _sdVec[i]._noShrinkShapes.insert( edgeInd );
2118 // Exclude from _shrinkShape2Shape FACE's that can't be shrinked since
2119 // the algo of the SOLID sharing the FACE does not support it
2120 set< string > notSupportAlgos; notSupportAlgos.insert("Hexa_3D");
2121 for ( size_t i = 0; i < _sdVec.size(); ++i )
2123 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2124 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2126 const TopoDS_Shape& fWOL = e2f->second;
2127 const TGeomID edgeID = e2f->first;
2128 bool notShrinkFace = false;
2129 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2130 while ( soIt->more() )
2132 const TopoDS_Shape* solid = soIt->next();
2133 if ( _sdVec[i]._solid.IsSame( *solid )) continue;
2134 SMESH_Algo* algo = _mesh->GetGen()->GetAlgo( *_mesh, *solid );
2135 if ( !algo || !notSupportAlgos.count( algo->GetName() )) continue;
2136 notShrinkFace = true;
2138 for ( ; iSolid < _sdVec.size(); ++iSolid )
2140 if ( _sdVec[iSolid]._solid.IsSame( *solid ) ) {
2141 if ( _sdVec[iSolid]._shrinkShape2Shape.count( edgeID ))
2142 notShrinkFace = false;
2146 if ( notShrinkFace )
2148 _sdVec[i]._noShrinkShapes.insert( edgeID );
2150 // add VERTEXes of the edge in _noShrinkShapes
2151 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2152 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2153 _sdVec[i]._noShrinkShapes.insert( getMeshDS()->ShapeToIndex( vIt.Value() ));
2155 // check if there is a collision with to-shrink-from EDGEs in iSolid
2156 if ( iSolid == _sdVec.size() )
2157 continue; // no VL in the solid
2159 TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2160 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2162 const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2163 const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2164 if ( eID == edgeID ||
2165 !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2166 _sdVec[i]._noShrinkShapes.count( eID ))
2168 for ( int is1st = 0; is1st < 2; ++is1st )
2170 TopoDS_Vertex V = helper.IthVertex( is1st, E );
2171 if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2173 // _sdVec[i]._noShrinkShapes.insert( eID );
2174 // V = helper.IthVertex( !is1st, E );
2175 // _sdVec[i]._noShrinkShapes.insert( getMeshDS()->ShapeToIndex( V ));
2176 //iE = 0; // re-start the loop on EDGEs of fWOL
2177 return error("No way to make a conformal mesh with "
2178 "the given set of faces with layers", _sdVec[i]._index);
2184 } // while ( soIt->more() )
2185 } // loop on _sdVec[i]._shrinkShape2Shape
2186 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2188 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2190 for ( size_t i = 0; i < _sdVec.size(); ++i )
2193 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2194 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2196 const TopoDS_Shape& vertex = shapes(iV);
2197 // find faces WOL sharing the vertex
2198 vector< TopoDS_Shape > facesWOL;
2199 size_t totalNbFaces = 0;
2200 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE);
2201 while ( fIt->more())
2203 const TopoDS_Shape* f = fIt->next();
2204 if ( helper.IsSubShape( *f, _sdVec[i]._solid ) )
2207 const int fID = getMeshDS()->ShapeToIndex( *f );
2208 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&&
2209 !_sdVec[i]._noShrinkShapes.count( fID )*/)
2210 facesWOL.push_back( *f );
2213 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2214 continue; // no layers at this vertex or no WOL
2215 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2216 switch ( facesWOL.size() )
2220 helper.SetSubShape( facesWOL[0] );
2221 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2223 TopoDS_Shape seamEdge;
2224 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2225 while ( eIt->more() && seamEdge.IsNull() )
2227 const TopoDS_Shape* e = eIt->next();
2228 if ( helper.IsRealSeam( *e ) )
2231 if ( !seamEdge.IsNull() )
2233 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2237 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2242 // find an edge shared by 2 faces
2243 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2244 while ( eIt->more())
2246 const TopoDS_Shape* e = eIt->next();
2247 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2248 helper.IsSubShape( *e, facesWOL[1]))
2250 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2256 return error("Not yet supported case", _sdVec[i]._index);
2261 // add FACEs of other SOLIDs to _ignoreFaceIds
2262 for ( size_t i = 0; i < _sdVec.size(); ++i )
2265 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2267 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2269 if ( !shapes.Contains( exp.Current() ))
2270 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2277 //================================================================================
2279 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2281 //================================================================================
2283 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2284 const StdMeshers_ViscousLayers* hyp,
2285 const TopoDS_Shape& hypShape,
2286 set<TGeomID>& ignoreFaceIds)
2288 TopExp_Explorer exp;
2290 vector<TGeomID> ids = hyp->GetBndShapes();
2291 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2293 for ( size_t ii = 0; ii < ids.size(); ++ii )
2295 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2296 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2297 ignoreFaceIds.insert( ids[ii] );
2300 else // FACEs with layers are given
2302 exp.Init( solid, TopAbs_FACE );
2303 for ( ; exp.More(); exp.Next() )
2305 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2306 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2307 ignoreFaceIds.insert( faceInd );
2311 // ignore internal FACEs if inlets and outlets are specified
2312 if ( hyp->IsToIgnoreShapes() )
2314 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2315 TopExp::MapShapesAndAncestors( hypShape,
2316 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2318 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2320 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2321 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2324 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2326 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2331 //================================================================================
2333 * \brief Create the inner surface of the viscous layer and prepare data for infation
2335 //================================================================================
2337 bool _ViscousBuilder::makeLayer(_SolidData& data)
2339 // get all sub-shapes to make layers on
2340 set<TGeomID> subIds, faceIds;
2341 subIds = data._noShrinkShapes;
2342 TopExp_Explorer exp( data._solid, TopAbs_FACE );
2343 for ( ; exp.More(); exp.Next() )
2345 SMESH_subMesh* fSubM = _mesh->GetSubMesh( exp.Current() );
2346 if ( ! data._ignoreFaceIds.count( fSubM->GetId() ))
2347 faceIds.insert( fSubM->GetId() );
2350 // make a map to find new nodes on sub-shapes shared with other SOLID
2351 map< TGeomID, TNode2Edge* >::iterator s2ne;
2352 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2353 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2355 TGeomID shapeInd = s2s->first;
2356 for ( size_t i = 0; i < _sdVec.size(); ++i )
2358 if ( _sdVec[i]._index == data._index ) continue;
2359 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2360 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2361 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2363 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2369 // Create temporary faces and _LayerEdge's
2371 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2373 data._stepSize = Precision::Infinite();
2374 data._stepSizeNodes[0] = 0;
2376 SMESH_MesherHelper helper( *_mesh );
2377 helper.SetSubShape( data._solid );
2378 helper.SetElementsOnShape( true );
2380 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2381 TNode2Edge::iterator n2e2;
2383 // collect _LayerEdge's of shapes they are based on
2384 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2385 const int nbShapes = getMeshDS()->MaxShapeIndex();
2386 edgesByGeom.resize( nbShapes+1 );
2388 // set data of _EdgesOnShape's
2389 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
2391 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
2392 while ( smIt->more() )
2395 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
2396 !faceIds.count( sm->GetId() ))
2398 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
2401 // make _LayerEdge's
2402 for ( set<TGeomID>::iterator id = faceIds.begin(); id != faceIds.end(); ++id )
2404 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( *id ));
2405 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2406 SMESH_ProxyMesh::SubMesh* proxySub =
2407 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2409 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2410 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << *id, data._index );
2412 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2413 while ( eIt->more() )
2415 const SMDS_MeshElement* face = eIt->next();
2416 double faceMaxCosin = -1;
2417 _LayerEdge* maxCosinEdge = 0;
2418 int nbDegenNodes = 0;
2420 newNodes.resize( face->NbCornerNodes() );
2421 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2423 const SMDS_MeshNode* n = face->GetNode( i );
2424 const int shapeID = n->getshapeId();
2425 const bool onDegenShap = helper.IsDegenShape( shapeID );
2426 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2431 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2432 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2433 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2434 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2444 TNode2Edge::iterator n2e = data._n2eMap.insert( make_pair( n, (_LayerEdge*)0 )).first;
2445 if ( !(*n2e).second )
2448 _LayerEdge* edge = new _LayerEdge();
2449 edge->_nodes.push_back( n );
2451 edgesByGeom[ shapeID ]._edges.push_back( edge );
2452 const bool noShrink = data._noShrinkShapes.count( shapeID );
2454 SMESH_TNodeXYZ xyz( n );
2456 // set edge data or find already refined _LayerEdge and get data from it
2457 if (( !noShrink ) &&
2458 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2459 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2460 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2462 _LayerEdge* foundEdge = (*n2e2).second;
2463 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2464 foundEdge->_pos.push_back( lastPos );
2465 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2466 const_cast< SMDS_MeshNode* >
2467 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2473 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2475 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2478 if ( edge->_nodes.size() < 2 )
2479 edge->Block( data );
2480 //data._noShrinkShapes.insert( shapeID );
2482 dumpMove(edge->_nodes.back());
2484 if ( edge->_cosin > faceMaxCosin )
2486 faceMaxCosin = edge->_cosin;
2487 maxCosinEdge = edge;
2490 newNodes[ i ] = n2e->second->_nodes.back();
2493 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2495 if ( newNodes.size() - nbDegenNodes < 2 )
2498 // create a temporary face
2499 const SMDS_MeshElement* newFace =
2500 new _TmpMeshFace( newNodes, --_tmpFaceID, face->getshapeId(), face->getIdInShape() );
2501 proxySub->AddElement( newFace );
2503 // compute inflation step size by min size of element on a convex surface
2504 if ( faceMaxCosin > theMinSmoothCosin )
2505 limitStepSize( data, face, maxCosinEdge );
2507 } // loop on 2D elements on a FACE
2508 } // loop on FACEs of a SOLID to create _LayerEdge's
2511 // Set _LayerEdge::_neibors
2512 TNode2Edge::iterator n2e;
2513 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2515 _EdgesOnShape& eos = data._edgesOnShape[iS];
2516 for ( size_t i = 0; i < eos._edges.size(); ++i )
2518 _LayerEdge* edge = eos._edges[i];
2519 TIDSortedNodeSet nearNodes;
2520 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2521 while ( fIt->more() )
2523 const SMDS_MeshElement* f = fIt->next();
2524 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2525 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2527 nearNodes.erase( edge->_nodes[0] );
2528 edge->_neibors.reserve( nearNodes.size() );
2529 TIDSortedNodeSet::iterator node = nearNodes.begin();
2530 for ( ; node != nearNodes.end(); ++node )
2531 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2532 edge->_neibors.push_back( n2e->second );
2536 data._epsilon = 1e-7;
2537 if ( data._stepSize < 1. )
2538 data._epsilon *= data._stepSize;
2540 if ( !findShapesToSmooth( data ))
2543 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2544 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2546 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2547 const SMDS_MeshNode* nn[2];
2548 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2550 _EdgesOnShape& eos = data._edgesOnShape[iS];
2551 for ( size_t i = 0; i < eos._edges.size(); ++i )
2553 _LayerEdge* edge = eos._edges[i];
2554 if ( edge->IsOnEdge() )
2556 // get neighbor nodes
2557 bool hasData = ( edge->_2neibors->_edges[0] );
2558 if ( hasData ) // _LayerEdge is a copy of another one
2560 nn[0] = edge->_2neibors->srcNode(0);
2561 nn[1] = edge->_2neibors->srcNode(1);
2563 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2567 // set neighbor _LayerEdge's
2568 for ( int j = 0; j < 2; ++j )
2570 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2571 return error("_LayerEdge not found by src node", data._index);
2572 edge->_2neibors->_edges[j] = n2e->second;
2575 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2578 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2580 _Simplex& s = edge->_simplices[j];
2581 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2582 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2585 // For an _LayerEdge on a degenerated EDGE, copy some data from
2586 // a corresponding _LayerEdge on a VERTEX
2587 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2588 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2590 // Generally we should not get here
2591 if ( eos.ShapeType() != TopAbs_EDGE )
2593 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2594 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2595 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2597 const _LayerEdge* vEdge = n2e->second;
2598 edge->_normal = vEdge->_normal;
2599 edge->_lenFactor = vEdge->_lenFactor;
2600 edge->_cosin = vEdge->_cosin;
2603 } // loop on data._edgesOnShape._edges
2604 } // loop on data._edgesOnShape
2606 // fix _LayerEdge::_2neibors on EDGEs to smooth
2607 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2608 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2609 // if ( !e2c->second.IsNull() )
2611 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2612 // data.Sort2NeiborsOnEdge( eos->_edges );
2619 //================================================================================
2621 * \brief Compute inflation step size by min size of element on a convex surface
2623 //================================================================================
2625 void _ViscousBuilder::limitStepSize( _SolidData& data,
2626 const SMDS_MeshElement* face,
2627 const _LayerEdge* maxCosinEdge )
2630 double minSize = 10 * data._stepSize;
2631 const int nbNodes = face->NbCornerNodes();
2632 for ( int i = 0; i < nbNodes; ++i )
2634 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2635 const SMDS_MeshNode* curN = face->GetNode( i );
2636 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2637 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2639 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2640 if ( dist < minSize )
2641 minSize = dist, iN = i;
2644 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
2645 if ( newStep < data._stepSize )
2647 data._stepSize = newStep;
2648 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
2649 data._stepSizeNodes[0] = face->GetNode( iN );
2650 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
2654 //================================================================================
2656 * \brief Compute inflation step size by min size of element on a convex surface
2658 //================================================================================
2660 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
2662 if ( minSize < data._stepSize )
2664 data._stepSize = minSize;
2665 if ( data._stepSizeNodes[0] )
2668 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
2669 data._stepSizeCoeff = data._stepSize / dist;
2674 //================================================================================
2676 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
2678 //================================================================================
2680 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
2682 const int nbTestPnt = 5; // on a FACE sub-shape
2684 BRepLProp_SLProps surfProp( 2, 1e-6 );
2685 SMESH_MesherHelper helper( *_mesh );
2687 data._convexFaces.clear();
2689 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2691 _EdgesOnShape& eof = data._edgesOnShape[iS];
2692 if ( eof.ShapeType() != TopAbs_FACE ||
2693 data._ignoreFaceIds.count( eof._shapeID ))
2696 TopoDS_Face F = TopoDS::Face( eof._shape );
2697 SMESH_subMesh * sm = eof._subMesh;
2698 const TGeomID faceID = eof._shapeID;
2700 BRepAdaptor_Surface surface( F, false );
2701 surfProp.SetSurface( surface );
2703 bool isTooCurved = false;
2705 _ConvexFace cnvFace;
2706 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
2707 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/true);
2708 while ( smIt->more() )
2711 const TGeomID subID = sm->GetId();
2712 // find _LayerEdge's of a sub-shape
2714 if (( eos = data.GetShapeEdges( subID )))
2715 cnvFace._subIdToEOS.insert( make_pair( subID, eos ));
2718 // check concavity and curvature and limit data._stepSize
2719 const double minCurvature =
2720 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
2721 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
2722 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
2724 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
2725 surfProp.SetParameters( uv.X(), uv.Y() );
2726 if ( !surfProp.IsCurvatureDefined() )
2728 if ( surfProp.MaxCurvature() * oriFactor > minCurvature )
2730 limitStepSize( data, 0.9 / surfProp.MaxCurvature() * oriFactor );
2733 if ( surfProp.MinCurvature() * oriFactor > minCurvature )
2735 limitStepSize( data, 0.9 / surfProp.MinCurvature() * oriFactor );
2739 } // loop on sub-shapes of the FACE
2741 if ( !isTooCurved ) continue;
2743 _ConvexFace & convFace =
2744 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
2747 convFace._normalsFixed = false;
2749 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
2750 // prism distortion.
2751 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
2752 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
2754 // there are _LayerEdge's on the FACE it-self;
2755 // select _LayerEdge's near EDGEs
2756 _EdgesOnShape& eos = * id2eos->second;
2757 for ( size_t i = 0; i < eos._edges.size(); ++i )
2759 _LayerEdge* ledge = eos._edges[ i ];
2760 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
2761 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
2763 convFace._simplexTestEdges.push_back( ledge );
2770 // where there are no _LayerEdge's on a _ConvexFace,
2771 // as e.g. on a fillet surface with no internal nodes - issue 22580,
2772 // so that collision of viscous internal faces is not detected by check of
2773 // intersection of _LayerEdge's with the viscous internal faces.
2775 set< const SMDS_MeshNode* > usedNodes;
2777 // look for _LayerEdge's with null _sWOL
2778 id2eos = convFace._subIdToEOS.begin();
2779 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
2781 _EdgesOnShape& eos = * id2eos->second;
2782 if ( !eos._sWOL.IsNull() )
2784 for ( size_t i = 0; i < eos._edges.size(); ++i )
2786 _LayerEdge* ledge = eos._edges[ i ];
2787 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
2788 if ( !usedNodes.insert( srcNode ).second ) continue;
2790 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
2792 usedNodes.insert( ledge->_simplices[i]._nPrev );
2793 usedNodes.insert( ledge->_simplices[i]._nNext );
2795 convFace._simplexTestEdges.push_back( ledge );
2799 } // loop on FACEs of data._solid
2802 //================================================================================
2804 * \brief Detect shapes (and _LayerEdge's on them) to smooth
2806 //================================================================================
2808 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
2810 // define allowed thickness
2811 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
2813 data._maxThickness = 0;
2814 data._minThickness = 1e100;
2815 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
2816 for ( ; hyp != data._hyps.end(); ++hyp )
2818 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
2819 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
2821 //const double tgtThick = /*Min( 0.5 * data._geomSize, */data._maxThickness;
2823 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
2824 // boundry inclined to the shape at a sharp angle
2826 //list< TGeomID > shapesToSmooth;
2827 TopTools_MapOfShape edgesOfSmooFaces;
2829 SMESH_MesherHelper helper( *_mesh );
2832 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2833 data._nbShapesToSmooth = 0;
2835 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
2837 _EdgesOnShape& eos = edgesByGeom[iS];
2838 eos._toSmooth = false;
2839 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
2842 double tgtThick = eos._hyp.GetTotalThickness();
2843 TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE );
2844 for ( ; eExp.More() && !eos._toSmooth; eExp.Next() )
2846 TGeomID iE = getMeshDS()->ShapeToIndex( eExp.Current() );
2847 vector<_LayerEdge*>& eE = edgesByGeom[ iE ]._edges;
2848 if ( eE.empty() ) continue;
2851 for ( size_t i = 0; i < eE.size() && !eos._toSmooth; ++i )
2852 if ( eE[i]->_cosin > theMinSmoothCosin )
2854 SMDS_ElemIteratorPtr fIt = eE[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2855 while ( fIt->more() && !eos._toSmooth )
2857 const SMDS_MeshElement* face = fIt->next();
2858 if ( face->getshapeId() == eos._shapeID &&
2859 getDistFromEdge( face, eE[i]->_nodes[0], faceSize ))
2861 eos._toSmooth = needSmoothing( eE[i]->_cosin, tgtThick, faceSize );
2866 if ( eos._toSmooth )
2868 for ( eExp.ReInit(); eExp.More(); eExp.Next() )
2869 edgesOfSmooFaces.Add( eExp.Current() );
2871 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
2873 data._nbShapesToSmooth += eos._toSmooth;
2877 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
2879 _EdgesOnShape& eos = edgesByGeom[iS];
2880 eos._edgeSmoother = NULL;
2881 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
2882 if ( !eos._hyp.ToSmooth() ) continue;
2884 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
2885 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
2888 double tgtThick = eos._hyp.GetTotalThickness();
2889 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
2891 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
2892 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
2893 if ( eV.empty() ) continue;
2894 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ));
2895 double angle = eDir.Angle( eV[0]->_normal );
2896 double cosin = Cos( angle );
2897 double cosinAbs = Abs( cosin );
2898 if ( cosinAbs > theMinSmoothCosin )
2900 // always smooth analytic EDGEs
2901 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
2902 eos._toSmooth = ! curve.IsNull();
2904 // compare tgtThick with the length of an end segment
2905 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
2906 while ( eIt->more() && !eos._toSmooth )
2908 const SMDS_MeshElement* endSeg = eIt->next();
2909 if ( endSeg->getshapeId() == (int) iS )
2912 SMESH_TNodeXYZ( endSeg->GetNode(0) ).Distance( endSeg->GetNode(1 ));
2913 eos._toSmooth = needSmoothing( cosinAbs, tgtThick, segLen );
2916 if ( eos._toSmooth )
2918 eos._edgeSmoother = new _Smoother1D( curve, eos );
2920 for ( size_t i = 0; i < eos._edges.size(); ++i )
2921 eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
2925 data._nbShapesToSmooth += eos._toSmooth;
2929 // Reset _cosin if no smooth is allowed by the user
2930 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
2932 _EdgesOnShape& eos = edgesByGeom[iS];
2933 if ( eos._edges.empty() ) continue;
2935 if ( !eos._hyp.ToSmooth() )
2936 for ( size_t i = 0; i < eos._edges.size(); ++i )
2937 eos._edges[i]->SetCosin( 0 );
2941 // Fill _eosC1 to make that C1 FACEs and EGDEs between them to be smoothed as a whole
2943 TopTools_MapOfShape c1VV;
2945 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
2947 _EdgesOnShape& eos = edgesByGeom[iS];
2948 if ( eos._edges.empty() ||
2949 eos.ShapeType() != TopAbs_FACE ||
2953 // check EDGEs of a FACE
2954 TopTools_MapOfShape checkedEE, allVV;
2955 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
2956 while ( !smQueue.empty() )
2958 SMESH_subMesh* sm = smQueue.front();
2959 smQueue.pop_front();
2960 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
2961 while ( smIt->more() )
2964 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
2965 allVV.Add( sm->GetSubShape() );
2966 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
2967 !checkedEE.Add( sm->GetSubShape() ))
2970 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
2971 vector<_LayerEdge*>& eE = eoe->_edges;
2972 if ( eE.empty() || !eoe->_sWOL.IsNull() )
2975 bool isC1 = true; // check continuity along an EDGE
2976 for ( size_t i = 0; i < eE.size() && isC1; ++i )
2977 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
2981 // check that mesh faces are C1 as well
2983 gp_XYZ norm1, norm2;
2984 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
2985 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
2986 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
2988 while ( fIt->more() && isC1 )
2989 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
2990 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
2995 // add the EDGE and an adjacent FACE to _eosC1
2996 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
2997 while ( const TopoDS_Shape* face = fIt->next() )
2999 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3000 if ( !eof ) continue; // other solid
3001 if ( !eos.HasC1( eoe ))
3003 eos._eosC1.push_back( eoe );
3004 eoe->_toSmooth = false;
3005 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3007 if ( eos._shapeID != eof->_shapeID && !eos.HasC1( eof ))
3009 eos._eosC1.push_back( eof );
3010 eof->_toSmooth = false;
3011 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3012 smQueue.push_back( eof->_subMesh );
3017 if ( eos._eosC1.empty() )
3020 // check VERTEXes of C1 FACEs
3021 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3022 for ( ; vIt.More(); vIt.Next() )
3024 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3025 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3028 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3029 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3030 while ( const TopoDS_Shape* face = fIt->next() )
3032 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3033 if ( !eof ) continue; // other solid
3034 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3040 eos._eosC1.push_back( eov );
3041 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3042 c1VV.Add( eov->_shape );
3046 } // fill _eosC1 of FACEs
3051 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3053 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3055 _EdgesOnShape& eov = edgesByGeom[iS];
3056 if ( eov._edges.empty() ||
3057 eov.ShapeType() != TopAbs_VERTEX ||
3058 c1VV.Contains( eov._shape ))
3060 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3062 // get directions of surrounding EDGEs
3064 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3065 while ( const TopoDS_Shape* e = fIt->next() )
3067 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3068 if ( !eoe ) continue; // other solid
3069 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V );
3070 if ( !Precision::IsInfinite( eDir.X() ))
3071 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3074 // find EDGEs with C1 directions
3075 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3076 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3077 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3079 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3080 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3083 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3084 double eLen1 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[i].first->_shape ));
3085 double eLen2 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[j].first->_shape ));
3086 if ( eLen1 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[i].first );
3087 if ( eLen2 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[j].first );
3088 dirOfEdges[i].first = 0;
3089 dirOfEdges[j].first = 0;
3092 } // fill _eosC1 of VERTEXes
3099 //================================================================================
3101 * \brief initialize data of _EdgesOnShape
3103 //================================================================================
3105 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3109 if ( !eos._shape.IsNull() ||
3110 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3113 SMESH_MesherHelper helper( *_mesh );
3116 eos._shapeID = sm->GetId();
3117 eos._shape = sm->GetSubShape();
3118 if ( eos.ShapeType() == TopAbs_FACE )
3119 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3120 eos._toSmooth = false;
3124 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3125 data._shrinkShape2Shape.find( eos._shapeID );
3126 if ( s2s != data._shrinkShape2Shape.end() )
3127 eos._sWOL = s2s->second;
3129 eos._isRegularSWOL = true;
3130 if ( eos.SWOLType() == TopAbs_FACE )
3132 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3133 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3134 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3138 if ( data._hyps.size() == 1 )
3140 eos._hyp = data._hyps.back();
3144 // compute average StdMeshers_ViscousLayers parameters
3145 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3146 if ( eos.ShapeType() == TopAbs_FACE )
3148 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3149 eos._hyp = f2hyp->second;
3153 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3154 while ( const TopoDS_Shape* face = fIt->next() )
3156 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3157 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3158 eos._hyp.Add( f2hyp->second );
3164 if ( ! eos._hyp.UseSurfaceNormal() )
3166 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3168 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3169 eos._faceNormals.resize( smDS->NbElements() );
3171 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3172 for ( int iF = 0; eIt->more(); ++iF )
3174 const SMDS_MeshElement* face = eIt->next();
3175 if ( !SMESH_MeshAlgos::FaceNormal( face, eos._faceNormals[iF], /*normalized=*/true ))
3176 eos._faceNormals[iF].SetCoord( 0,0,0 );
3179 if ( !helper.IsReversedSubMesh( TopoDS::Face( eos._shape )))
3180 for ( size_t iF = 0; iF < eos._faceNormals.size(); ++iF )
3181 eos._faceNormals[iF].Reverse();
3183 else // find EOS of adjacent FACEs
3185 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3186 while ( const TopoDS_Shape* face = fIt->next() )
3188 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3189 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3190 if ( eos._faceEOS.back()->_shape.IsNull() )
3191 // avoid using uninitialised _shapeID in GetNormal()
3192 eos._faceEOS.back()->_shapeID = faceID;
3198 //================================================================================
3200 * \brief Returns normal of a face
3202 //================================================================================
3204 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3207 const _EdgesOnShape* eos = 0;
3209 if ( face->getshapeId() == _shapeID )
3215 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3216 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3217 eos = _faceEOS[ iF ];
3221 ( ok = ( face->getIdInShape() < (int) eos->_faceNormals.size() )))
3223 norm = eos->_faceNormals[ face->getIdInShape() ];
3227 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3228 << " on _shape #" << _shapeID );
3234 //================================================================================
3236 * \brief Set data of _LayerEdge needed for smoothing
3238 //================================================================================
3240 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3242 SMESH_MesherHelper& helper,
3245 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3248 edge._maxLen = Precision::Infinite();
3251 edge._curvature = 0;
3254 // --------------------------
3255 // Compute _normal and _cosin
3256 // --------------------------
3259 edge._lenFactor = 1.;
3260 edge._normal.SetCoord(0,0,0);
3261 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3263 int totalNbFaces = 0;
3265 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3269 const bool onShrinkShape = !eos._sWOL.IsNull();
3270 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3271 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3273 // get geom FACEs the node lies on
3274 //if ( useGeometry )
3276 set<TGeomID> faceIds;
3277 if ( eos.ShapeType() == TopAbs_FACE )
3279 faceIds.insert( eos._shapeID );
3283 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3284 while ( fIt->more() )
3285 faceIds.insert( fIt->next()->getshapeId() );
3287 set<TGeomID>::iterator id = faceIds.begin();
3288 for ( ; id != faceIds.end(); ++id )
3290 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3291 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3293 F = TopoDS::Face( s );
3294 face2Norm[ totalNbFaces ].first = F;
3302 if ( onShrinkShape ) // one of faces the node is on has no layers
3304 if ( eos.SWOLType() == TopAbs_EDGE )
3306 // inflate from VERTEX along EDGE
3307 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ));
3309 else if ( eos.ShapeType() == TopAbs_VERTEX )
3311 // inflate from VERTEX along FACE
3312 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3313 node, helper, normOK, &edge._cosin);
3317 // inflate from EDGE along FACE
3318 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3319 node, helper, normOK);
3322 else // layers are on all FACEs of SOLID the node is on
3325 for ( int iF = 0; iF < totalNbFaces; ++iF )
3327 F = TopoDS::Face( face2Norm[ iF ].first );
3328 geomNorm = getFaceNormal( node, F, helper, normOK );
3329 if ( !normOK ) continue;
3332 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3334 face2Norm[ iF ].second = geomNorm.XYZ();
3335 edge._normal += geomNorm.XYZ();
3337 if ( nbOkNorms == 0 )
3338 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3340 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3342 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3343 edge._normal.SetCoord( 0,0,0 );
3344 for ( int iF = 0; iF < totalNbFaces; ++iF )
3346 const TopoDS_Face& F = face2Norm[iF].first;
3347 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3348 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3351 face2Norm[ iF ].second = geomNorm.XYZ();
3352 edge._normal += face2Norm[ iF ].second;
3356 if ( totalNbFaces >= 3 )
3358 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces );
3362 else // !useGeometry - get _normal using surrounding mesh faces
3364 edge._normal = getWeigthedNormal( &edge );
3366 // set<TGeomID> faceIds;
3368 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3369 // while ( fIt->more() )
3371 // const SMDS_MeshElement* face = fIt->next();
3372 // if ( eos.GetNormal( face, geomNorm ))
3374 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3375 // continue; // use only one mesh face on FACE
3376 // edge._normal += geomNorm.XYZ();
3383 //if ( eos._hyp.UseSurfaceNormal() )
3385 switch ( eos.ShapeType() )
3392 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3393 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3394 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3395 edge._cosin = Cos( angle );
3398 case TopAbs_VERTEX: {
3399 if ( eos.SWOLType() != TopAbs_FACE ) { // else _cosin is set by getFaceDir()
3400 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3401 gp_Vec inFaceDir = getFaceDir( F, V, node, helper, normOK );
3402 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3403 edge._cosin = Cos( angle );
3404 if ( totalNbFaces > 2 || helper.IsSeamShape( node->getshapeId() ))
3405 for ( int iF = totalNbFaces-2; iF >=0; --iF )
3407 F = face2Norm[ iF ].first;
3408 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3410 double angle = inFaceDir.Angle( edge._normal );
3411 double cosin = Cos( angle );
3412 if ( Abs( cosin ) > edge._cosin )
3413 edge._cosin = cosin;
3420 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3424 double normSize = edge._normal.SquareModulus();
3425 if ( normSize < numeric_limits<double>::min() )
3426 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3428 edge._normal /= sqrt( normSize );
3430 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3432 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3433 edge._nodes.resize( 1 );
3434 edge._normal.SetCoord( 0,0,0 );
3438 // Set the rest data
3439 // --------------------
3441 edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3443 if ( onShrinkShape )
3445 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3446 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3447 sm->RemoveNode( tgtNode , /*isNodeDeleted=*/false );
3449 // set initial position which is parameters on _sWOL in this case
3450 if ( eos.SWOLType() == TopAbs_EDGE )
3452 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3453 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3454 if ( edge._nodes.size() > 1 )
3455 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3457 else // eos.SWOLType() == TopAbs_FACE
3459 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3460 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3461 if ( edge._nodes.size() > 1 )
3462 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3465 if ( edge._nodes.size() > 1 )
3467 // check if an angle between a FACE with layers and SWOL is sharp,
3468 // else the edge should not inflate
3470 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3471 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3472 F = face2Norm[iF].first;
3475 geomNorm = getFaceNormal( node, F, helper, normOK );
3476 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3477 geomNorm.Reverse(); // inside the SOLID
3478 if ( geomNorm * edge._normal < -0.001 )
3480 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3481 edge._nodes.resize( 1 );
3483 else if ( edge._lenFactor > 3 )
3485 edge._lenFactor = 2;
3486 edge.Set( _LayerEdge::RISKY_SWOL );
3493 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3495 if ( eos.ShapeType() == TopAbs_FACE )
3498 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3500 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3501 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3506 // Set neighbor nodes for a _LayerEdge based on EDGE
3508 if ( eos.ShapeType() == TopAbs_EDGE /*||
3509 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3511 edge._2neibors = new _2NearEdges;
3512 // target nodes instead of source ones will be set later
3518 //================================================================================
3520 * \brief Return normal to a FACE at a node
3521 * \param [in] n - node
3522 * \param [in] face - FACE
3523 * \param [in] helper - helper
3524 * \param [out] isOK - true or false
3525 * \param [in] shiftInside - to find normal at a position shifted inside the face
3526 * \return gp_XYZ - normal
3528 //================================================================================
3530 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3531 const TopoDS_Face& face,
3532 SMESH_MesherHelper& helper,
3539 // get a shifted position
3540 gp_Pnt p = SMESH_TNodeXYZ( node );
3541 gp_XYZ shift( 0,0,0 );
3542 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
3543 switch ( S.ShapeType() ) {
3546 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
3551 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
3559 p.Translate( shift * 1e-5 );
3561 TopLoc_Location loc;
3562 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
3564 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
3566 projector.Perform( p );
3567 if ( !projector.IsDone() || projector.NbPoints() < 1 )
3572 Quantity_Parameter U,V;
3573 projector.LowerDistanceParameters(U,V);
3578 uv = helper.GetNodeUV( face, node, 0, &isOK );
3584 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
3586 if ( !shiftInside &&
3587 helper.IsDegenShape( node->getshapeId() ) &&
3588 getFaceNormalAtSingularity( uv, face, helper, normal ))
3591 return normal.XYZ();
3594 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
3595 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3597 if ( pointKind == IMPOSSIBLE &&
3598 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
3600 // probably NormEstim() failed due to a too high tolerance
3601 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
3602 isOK = ( pointKind < IMPOSSIBLE );
3604 if ( pointKind < IMPOSSIBLE )
3606 if ( pointKind != REGULAR &&
3608 node->GetPosition()->GetDim() < 2 ) // FACE boundary
3610 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
3611 if ( normShift * normal.XYZ() < 0. )
3617 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
3619 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
3621 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3622 while ( fIt->more() )
3624 const SMDS_MeshElement* f = fIt->next();
3625 if ( f->getshapeId() == faceID )
3627 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
3630 TopoDS_Face ff = face;
3631 ff.Orientation( TopAbs_FORWARD );
3632 if ( helper.IsReversedSubMesh( ff ))
3639 return normal.XYZ();
3642 //================================================================================
3644 * \brief Try to get normal at a singularity of a surface basing on it's nature
3646 //================================================================================
3648 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
3649 const TopoDS_Face& face,
3650 SMESH_MesherHelper& helper,
3653 BRepAdaptor_Surface surface( face );
3655 if ( !getRovolutionAxis( surface, axis ))
3658 double f,l, d, du, dv;
3659 f = surface.FirstUParameter();
3660 l = surface.LastUParameter();
3661 d = ( uv.X() - f ) / ( l - f );
3662 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3663 f = surface.FirstVParameter();
3664 l = surface.LastVParameter();
3665 d = ( uv.Y() - f ) / ( l - f );
3666 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3669 gp_Pnt2d testUV = uv;
3670 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3672 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
3673 for ( int iLoop = 0; true ; ++iLoop )
3675 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
3676 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
3683 if ( axis * refDir < 0. )
3691 //================================================================================
3693 * \brief Return a normal at a node weighted with angles taken by faces
3695 //================================================================================
3697 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
3699 const SMDS_MeshNode* n = edge->_nodes[0];
3701 gp_XYZ resNorm(0,0,0);
3702 SMESH_TNodeXYZ p0( n ), pP, pN;
3703 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
3705 pP.Set( edge->_simplices[i]._nPrev );
3706 pN.Set( edge->_simplices[i]._nNext );
3707 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
3708 double l0P = v0P.SquareMagnitude();
3709 double l0N = v0N.SquareMagnitude();
3710 double lPN = vPN.SquareMagnitude();
3711 if ( l0P < std::numeric_limits<double>::min() ||
3712 l0N < std::numeric_limits<double>::min() ||
3713 lPN < std::numeric_limits<double>::min() )
3715 double lNorm = norm.SquareMagnitude();
3716 double sin2 = lNorm / l0P / l0N;
3717 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
3719 double weight = sin2 * angle / lPN;
3720 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
3726 //================================================================================
3728 * \brief Return a normal at a node by getting a common point of offset planes
3729 * defined by the FACE normals
3731 //================================================================================
3733 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
3734 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
3737 SMESH_TNodeXYZ p0 = edge->_nodes[0];
3739 gp_XYZ resNorm(0,0,0);
3740 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
3741 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
3743 for ( int i = 0; i < nbFaces; ++i )
3744 resNorm += f2Normal[i].second;
3748 // prepare _OffsetPlane's
3749 vector< _OffsetPlane > pln( nbFaces );
3750 for ( int i = 0; i < nbFaces; ++i )
3752 pln[i]._faceIndex = i;
3753 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
3756 // intersect neighboring OffsetPlane's
3757 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
3758 while ( const TopoDS_Shape* edge = edgeIt->next() )
3760 int f1 = -1, f2 = -1;
3761 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
3762 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
3763 (( f1 < 0 ) ? f1 : f2 ) = i;
3766 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ]);
3769 // get a common point
3770 gp_XYZ commonPnt( 0, 0, 0 );
3773 for ( int i = 0; i < nbFaces; ++i )
3775 commonPnt += pln[ i ].GetCommonPoint( isPointFound );
3776 nbPoints += isPointFound;
3778 gp_XYZ wgtNorm = getWeigthedNormal( edge );
3779 if ( nbPoints == 0 )
3782 commonPnt /= nbPoints;
3783 resNorm = commonPnt - p0;
3785 // choose the best among resNorm and wgtNorm
3786 resNorm.Normalize();
3787 wgtNorm.Normalize();
3788 double resMinDot = std::numeric_limits<double>::max();
3789 double wgtMinDot = std::numeric_limits<double>::max();
3790 for ( int i = 0; i < nbFaces; ++i )
3792 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
3793 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
3796 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
3798 edge->Set( _LayerEdge::MULTI_NORMAL );
3801 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
3804 //================================================================================
3806 * \brief Compute line of intersection of 2 planes
3808 //================================================================================
3810 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln )
3812 int iNext = bool( _faceIndexNext[0] >= 0 );
3813 _faceIndexNext[ iNext ] = pln._faceIndex;
3815 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
3816 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
3818 gp_XYZ lineDir = n1 ^ n2;
3820 double x = Abs( lineDir.X() );
3821 double y = Abs( lineDir.Y() );
3822 double z = Abs( lineDir.Z() );
3824 int cooMax; // max coordinate
3826 if (x > z) cooMax = 1;
3830 if (y > z) cooMax = 2;
3834 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
3838 // the constants in the 2 plane equations
3839 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
3840 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
3845 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
3846 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
3849 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
3851 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
3854 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
3855 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
3859 gp_Lin& line = _lines[ iNext ];
3860 line.SetDirection( lineDir );
3861 line.SetLocation ( linePos );
3863 _isLineOK[ iNext ] = true;
3866 iNext = bool( pln._faceIndexNext[0] >= 0 );
3867 pln._lines [ iNext ] = line;
3868 pln._faceIndexNext[ iNext ] = this->_faceIndex;
3869 pln._isLineOK [ iNext ] = true;
3872 //================================================================================
3874 * \brief Computes intersection point of two _lines
3876 //================================================================================
3878 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound) const
3883 if ( NbLines() == 2 )
3885 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
3886 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
3887 if ( Abs( dot01 ) > std::numeric_limits<double>::min() )
3889 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
3890 double u1 = - ( lPerp0 * l0l1 ) / dot01;
3891 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
3899 //================================================================================
3901 * \brief Find 2 neigbor nodes of a node on EDGE
3903 //================================================================================
3905 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
3906 const SMDS_MeshNode*& n1,
3907 const SMDS_MeshNode*& n2,
3911 const SMDS_MeshNode* node = edge->_nodes[0];
3912 const int shapeInd = eos._shapeID;
3913 SMESHDS_SubMesh* edgeSM = 0;
3914 if ( eos.ShapeType() == TopAbs_EDGE )
3916 edgeSM = eos._subMesh->GetSubMeshDS();
3917 if ( !edgeSM || edgeSM->NbElements() == 0 )
3918 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
3922 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
3923 while ( eIt->more() && !n2 )
3925 const SMDS_MeshElement* e = eIt->next();
3926 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
3927 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
3930 if (!edgeSM->Contains(e)) continue;
3934 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
3935 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
3937 ( iN++ ? n2 : n1 ) = nNeibor;
3940 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
3944 //================================================================================
3946 * \brief Set _curvature and _2neibors->_plnNorm by 2 neigbor nodes residing the same EDGE
3948 //================================================================================
3950 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
3951 const SMDS_MeshNode* n2,
3952 const _EdgesOnShape& eos,
3953 SMESH_MesherHelper& helper)
3955 if ( eos.ShapeType() != TopAbs_EDGE )
3958 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
3959 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
3960 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
3964 double sumLen = vec1.Modulus() + vec2.Modulus();
3965 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
3966 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
3967 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
3968 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
3969 if ( _curvature ) delete _curvature;
3970 _curvature = _Curvature::New( avgNormProj, avgLen );
3971 // if ( _curvature )
3972 // debugMsg( _nodes[0]->GetID()
3973 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
3974 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
3975 // << _curvature->lenDelta(0) );
3979 if ( eos._sWOL.IsNull() )
3981 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3982 // if ( SMESH_Algo::isDegenerated( E ))
3984 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
3985 gp_XYZ plnNorm = dirE ^ _normal;
3986 double proj0 = plnNorm * vec1;
3987 double proj1 = plnNorm * vec2;
3988 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
3990 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
3991 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
3996 //================================================================================
3998 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
3999 * this and other _LayerEdge's are inflated along a FACE or an EDGE
4001 //================================================================================
4003 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4005 SMESH_MesherHelper& helper )
4007 _nodes = other._nodes;
4008 _normal = other._normal;
4010 _lenFactor = other._lenFactor;
4011 _cosin = other._cosin;
4012 _2neibors = other._2neibors;
4013 _curvature = 0; std::swap( _curvature, other._curvature );
4014 _2neibors = 0; std::swap( _2neibors, other._2neibors );
4016 gp_XYZ lastPos( 0,0,0 );
4017 if ( eos.SWOLType() == TopAbs_EDGE )
4019 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4020 _pos.push_back( gp_XYZ( u, 0, 0));
4022 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4027 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4028 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4030 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4031 lastPos.SetX( uv.X() );
4032 lastPos.SetY( uv.Y() );
4037 //================================================================================
4039 * \brief Set _cosin and _lenFactor
4041 //================================================================================
4043 void _LayerEdge::SetCosin( double cosin )
4046 cosin = Abs( _cosin );
4047 //_lenFactor = ( cosin < 1.-1e-12 ) ? Min( 2., 1./sqrt(1-cosin*cosin )) : 1.0;
4048 _lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4051 //================================================================================
4053 * \brief Check if another _LayerEdge is a neighbor on EDGE
4055 //================================================================================
4057 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4059 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4060 ( edge->_2neibors && edge->_2neibors->include( this )));
4063 //================================================================================
4065 * \brief Fills a vector<_Simplex >
4067 //================================================================================
4069 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4070 vector<_Simplex>& simplices,
4071 const set<TGeomID>& ingnoreShapes,
4072 const _SolidData* dataToCheckOri,
4076 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4077 while ( fIt->more() )
4079 const SMDS_MeshElement* f = fIt->next();
4080 const TGeomID shapeInd = f->getshapeId();
4081 if ( ingnoreShapes.count( shapeInd )) continue;
4082 const int nbNodes = f->NbCornerNodes();
4083 const int srcInd = f->GetNodeIndex( node );
4084 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4085 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4086 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4087 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4088 std::swap( nPrev, nNext );
4089 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4093 SortSimplices( simplices );
4096 //================================================================================
4098 * \brief Set neighbor simplices side by side
4100 //================================================================================
4102 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4104 vector<_Simplex> sortedSimplices( simplices.size() );
4105 sortedSimplices[0] = simplices[0];
4107 for ( size_t i = 1; i < simplices.size(); ++i )
4109 for ( size_t j = 1; j < simplices.size(); ++j )
4110 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4112 sortedSimplices[i] = simplices[j];
4117 if ( nbFound == simplices.size() - 1 )
4118 simplices.swap( sortedSimplices );
4121 //================================================================================
4123 * \brief DEBUG. Create groups contating temorary data of _LayerEdge's
4125 //================================================================================
4127 void _ViscousBuilder::makeGroupOfLE()
4130 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4132 if ( _sdVec[i]._n2eMap.empty() ) continue;
4134 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4135 TNode2Edge::iterator n2e;
4136 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4138 _LayerEdge* le = n2e->second;
4139 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4140 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4141 // << ", " << le->_nodes[iN]->GetID() <<"])");
4143 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4144 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4149 dumpFunction( SMESH_Comment("makeNormals") << i );
4150 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4152 _LayerEdge* edge = n2e->second;
4153 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4154 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4155 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4156 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4160 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4161 dumpCmd( "faceId1 = mesh.NbElements()" );
4162 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4163 for ( ; fExp.More(); fExp.Next() )
4165 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4167 if ( sm->NbElements() == 0 ) continue;
4168 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4169 while ( fIt->more())
4171 const SMDS_MeshElement* e = fIt->next();
4172 SMESH_Comment cmd("mesh.AddFace([");
4173 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4174 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4179 dumpCmd( "faceId2 = mesh.NbElements()" );
4180 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4181 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4182 << "'%s-%s' % (faceId1+1, faceId2))");
4188 //================================================================================
4190 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4192 //================================================================================
4194 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4196 data._geomSize = Precision::Infinite();
4197 double intersecDist;
4198 const SMDS_MeshElement* face;
4199 SMESH_MesherHelper helper( *_mesh );
4201 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4202 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4203 data._proxyMesh->GetFaces( data._solid )));
4205 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4207 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4208 if ( eos._edges.empty() )
4210 // get neighbor faces intersection with which should not be considered since
4211 // collisions are avoided by means of smoothing
4212 set< TGeomID > neighborFaces;
4213 if ( eos._hyp.ToSmooth() )
4215 SMESH_subMeshIteratorPtr subIt =
4216 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4217 while ( subIt->more() )
4219 SMESH_subMesh* sm = subIt->next();
4220 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4221 while ( const TopoDS_Shape* face = fIt->next() )
4222 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4225 // find intersections
4226 double thinkness = eos._hyp.GetTotalThickness();
4227 for ( size_t i = 0; i < eos._edges.size(); ++i )
4229 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
4230 eos._edges[i]->_maxLen = thinkness;
4231 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4232 if ( intersecDist > 0 && face )
4234 data._geomSize = Min( data._geomSize, intersecDist );
4235 if ( !neighborFaces.count( face->getshapeId() ))
4236 eos._edges[i]->_maxLen = Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. ));
4242 //================================================================================
4244 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4246 //================================================================================
4248 bool _ViscousBuilder::inflate(_SolidData& data)
4250 SMESH_MesherHelper helper( *_mesh );
4252 // Limit inflation step size by geometry size found by itersecting
4253 // normals of _LayerEdge's with mesh faces
4254 if ( data._stepSize > 0.3 * data._geomSize )
4255 limitStepSize( data, 0.3 * data._geomSize );
4257 const double tgtThick = data._maxThickness;
4258 if ( data._stepSize > data._minThickness )
4259 limitStepSize( data, data._minThickness );
4261 if ( data._stepSize < 1. )
4262 data._epsilon = data._stepSize * 1e-7;
4264 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4266 findCollisionEdges( data, helper );
4268 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4269 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4270 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4271 data._edgesOnShape[i]._edges.size() > 0 &&
4272 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4274 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4275 data._edgesOnShape[i]._edges[0]->Block( data );
4278 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4280 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4281 int nbSteps = 0, nbRepeats = 0;
4282 while ( avgThick < 0.99 )
4284 // new target length
4285 double prevThick = curThick;
4286 curThick += data._stepSize;
4287 if ( curThick > tgtThick )
4289 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4293 double stepSize = curThick - prevThick;
4294 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4296 // Elongate _LayerEdge's
4297 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4298 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4300 _EdgesOnShape& eos = data._edgesOnShape[iS];
4301 if ( eos._edges.empty() ) continue;
4303 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4304 for ( size_t i = 0; i < eos._edges.size(); ++i )
4306 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4311 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4314 // Improve and check quality
4315 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4319 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4320 debugMsg("NOT INVALIDATED STEP!");
4321 return error("Smoothing failed", data._index);
4323 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4324 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4326 _EdgesOnShape& eos = data._edgesOnShape[iS];
4327 for ( size_t i = 0; i < eos._edges.size(); ++i )
4328 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4332 break; // no more inflating possible
4336 // Evaluate achieved thickness
4338 int nbActiveEdges = 0;
4339 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4341 _EdgesOnShape& eos = data._edgesOnShape[iS];
4342 if ( eos._edges.empty() ) continue;
4344 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4345 for ( size_t i = 0; i < eos._edges.size(); ++i )
4347 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4348 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4351 avgThick /= data._n2eMap.size();
4352 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4354 #ifdef BLOCK_INFLATION
4355 if ( nbActiveEdges == 0 )
4357 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4361 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4363 debugMsg( "-- Stop inflation since "
4364 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4365 << tgtThick * avgThick << " ) * " << safeFactor );
4370 limitStepSize( data, 0.25 * distToIntersection );
4371 if ( data._stepSizeNodes[0] )
4372 data._stepSize = data._stepSizeCoeff *
4373 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4375 } // while ( avgThick < 0.99 )
4378 return error("failed at the very first inflation step", data._index);
4380 if ( avgThick < 0.99 )
4382 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4384 data._proxyMesh->_warning.reset
4385 ( new SMESH_ComputeError (COMPERR_WARNING,
4386 SMESH_Comment("Thickness ") << tgtThick <<
4387 " of viscous layers not reached,"
4388 " average reached thickness is " << avgThick*tgtThick));
4392 // Restore position of src nodes moved by inflation on _noShrinkShapes
4393 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
4394 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4396 _EdgesOnShape& eos = data._edgesOnShape[iS];
4397 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
4398 for ( size_t i = 0; i < eos._edges.size(); ++i )
4400 restoreNoShrink( *eos._edges[ i ] );
4405 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
4408 //================================================================================
4410 * \brief Improve quality of layer inner surface and check intersection
4412 //================================================================================
4414 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
4416 double & distToIntersection)
4418 if ( data._nbShapesToSmooth == 0 )
4419 return true; // no shapes needing smoothing
4421 bool moved, improved;
4423 vector< _LayerEdge* > movedEdges, badEdges;
4424 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
4425 vector< bool > isConcaveFace;
4427 SMESH_MesherHelper helper(*_mesh);
4428 Handle(ShapeAnalysis_Surface) surface;
4431 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
4433 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
4435 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4437 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4438 if ( !eos._toSmooth ||
4439 eos.ShapeType() != shapeType ||
4440 eos._edges.empty() )
4443 // already smoothed?
4444 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
4445 // if ( !toSmooth ) continue;
4447 if ( !eos._hyp.ToSmooth() )
4449 // smooth disabled by the user; check validy only
4450 if ( !isFace ) continue;
4451 for ( size_t i = 0; i < eos._edges.size(); ++i )
4453 _LayerEdge* edge = eos._edges[i];
4454 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
4455 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
4457 debugMsg( "-- Stop inflation. Bad simplex ("
4458 << " "<< edge->_nodes[0]->GetID()
4459 << " "<< edge->_nodes.back()->GetID()
4460 << " "<< edge->_simplices[iF]._nPrev->GetID()
4461 << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
4465 continue; // goto the next EDGE or FACE
4469 if ( eos.SWOLType() == TopAbs_FACE )
4471 if ( !F.IsSame( eos._sWOL )) {
4472 F = TopoDS::Face( eos._sWOL );
4473 helper.SetSubShape( F );
4474 surface = helper.GetSurface( F );
4479 F.Nullify(); surface.Nullify();
4481 const TGeomID sInd = eos._shapeID;
4483 // perform smoothing
4485 if ( eos.ShapeType() == TopAbs_EDGE )
4487 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
4489 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
4491 // smooth on EDGE's (normally we should not get here)
4495 for ( size_t i = 0; i < eos._edges.size(); ++i )
4497 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
4499 dumpCmd( SMESH_Comment("# end step ")<<step);
4501 while ( moved && step++ < 5 );
4506 else // smooth on FACE
4509 eosC1.push_back( & eos );
4510 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
4513 isConcaveFace.resize( eosC1.size() );
4514 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4516 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
4517 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4518 for ( size_t i = 0; i < edges.size(); ++i )
4519 if ( edges[i]->Is( _LayerEdge::MOVED ) ||
4520 edges[i]->Is( _LayerEdge::NEAR_BOUNDARY ))
4521 movedEdges.push_back( edges[i] );
4523 makeOffsetSurface( *eosC1[ iEOS ], helper );
4526 int step = 0, stepLimit = 5, nbBad = 0;
4527 while (( ++step <= stepLimit ) || improved )
4529 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
4530 <<"_InfStep"<<infStep<<"_"<<step); // debug
4531 int oldBadNb = nbBad;
4534 #ifdef INCREMENTAL_SMOOTH
4535 bool findBest = false; // ( step == stepLimit );
4536 for ( size_t i = 0; i < movedEdges.size(); ++i )
4538 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
4539 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
4540 badEdges.push_back( movedEdges[i] );
4543 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
4544 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4546 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4547 for ( size_t i = 0; i < edges.size(); ++i )
4549 edges[i]->Unset( _LayerEdge::SMOOTHED );
4550 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
4551 badEdges.push_back( eos._edges[i] );
4555 nbBad = badEdges.size();
4558 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
4560 if ( !badEdges.empty() && step >= stepLimit / 2 )
4562 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
4565 // resolve hard smoothing situation around concave VERTEXes
4566 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4568 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
4569 for ( size_t i = 0; i < eosCoVe.size(); ++i )
4570 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
4573 // look for the best smooth of _LayerEdge's neighboring badEdges
4575 for ( size_t i = 0; i < badEdges.size(); ++i )
4577 _LayerEdge* ledge = badEdges[i];
4578 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
4580 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
4581 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
4583 ledge->Unset( _LayerEdge::SMOOTHED );
4584 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
4586 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
4589 if ( nbBad == oldBadNb &&
4591 step < stepLimit ) // smooth w/o chech of validity
4594 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
4595 <<"_InfStep"<<infStep<<"_"<<step); // debug
4596 for ( size_t i = 0; i < movedEdges.size(); ++i )
4598 movedEdges[i]->SmoothWoCheck();
4600 if ( stepLimit < 9 )
4604 improved = ( nbBad < oldBadNb );
4608 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
4609 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4611 putOnOffsetSurface( *eosC1[ iEOS ], infStep, step, /*moveAll=*/step == 1 );
4614 } // smoothing steps
4616 // project -- to prevent intersections or fix bad simplices
4617 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4619 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
4620 putOnOffsetSurface( *eosC1[ iEOS ], infStep );
4623 if ( !badEdges.empty() )
4626 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4628 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
4630 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
4632 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
4633 edge->CheckNeiborsOnBoundary( & badEdges );
4636 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4637 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4638 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4639 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4641 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
4642 << " "<< tgtXYZ._node->GetID()
4643 << " "<< edge->_simplices[j]._nPrev->GetID()
4644 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4645 badEdges.push_back( edge );
4652 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4653 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4659 } // // smooth on FACE's
4661 } // smooth on [ EDGEs, FACEs ]
4663 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
4665 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4667 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4668 if ( eos.ShapeType() == TopAbs_FACE ||
4669 eos._edges.empty() ||
4670 !eos._sWOL.IsNull() )
4674 for ( size_t i = 0; i < eos._edges.size(); ++i )
4676 _LayerEdge* edge = eos._edges[i];
4677 if ( edge->_nodes.size() < 2 ) continue;
4678 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4679 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4680 //const gp_XYZ& prevXYZ = edge->PrevPos();
4681 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4682 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4684 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
4685 << " "<< tgtXYZ._node->GetID()
4686 << " "<< edge->_simplices[j]._nPrev->GetID()
4687 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4688 badEdges.push_back( edge );
4693 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4695 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4701 // Check if the last segments of _LayerEdge intersects 2D elements;
4702 // checked elements are either temporary faces or faces on surfaces w/o the layers
4704 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4705 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4706 data._proxyMesh->GetFaces( data._solid )) );
4708 #ifdef BLOCK_INFLATION
4709 const bool toBlockInfaltion = true;
4711 const bool toBlockInfaltion = false;
4713 distToIntersection = Precision::Infinite();
4715 const SMDS_MeshElement* intFace = 0;
4716 const SMDS_MeshElement* closestFace = 0;
4718 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4720 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4721 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
4723 for ( size_t i = 0; i < eos._edges.size(); ++i )
4725 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
4726 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
4728 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
4730 // Collision; try to deflate _LayerEdge's causing it
4732 badEdges.push_back( eos._edges[i] );
4734 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4739 if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
4741 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
4743 const SMDS_MeshElement* srcFace =
4744 eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
4745 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
4746 while ( nIt->more() )
4748 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
4749 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
4750 if ( n2e != data._n2eMap.end() )
4751 badEdges.push_back( n2e->second );
4754 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4759 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
4766 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
4771 const bool isShorterDist = ( distToIntersection > dist );
4772 if ( toBlockInfaltion || isShorterDist )
4774 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
4775 // lying on this _ConvexFace
4776 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
4777 if ( convFace->_subIdToEOS.count ( eos._shapeID ))
4780 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
4781 // ( avoid limiting the thickness on the case of issue 22576)
4782 if ( intFace->getshapeId() == eos._shapeID )
4785 // ignore intersection with intFace of an adjacent FACE
4788 bool toIgnore = false;
4789 if ( eos._edges[i]->Is( _LayerEdge::TO_SMOOTH ))
4791 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
4792 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
4794 TopExp_Explorer edge( eos._shape, TopAbs_EDGE );
4795 for ( ; !toIgnore && edge.More(); edge.Next() )
4796 // is adjacent - has a common EDGE
4797 toIgnore = ( helper.IsSubShape( edge.Current(), S ));
4799 if ( toIgnore ) // check angle between normals
4802 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
4803 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
4807 if ( !toIgnore ) // check if the edge is a neighbor of intFace
4809 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
4811 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
4812 toIgnore = ( nInd >= 0 );
4819 // intersection not ignored
4821 if ( toBlockInfaltion &&
4822 dist < ( eos._edges[i]->_len * theThickToIntersection ))
4824 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
4825 eos._edges[i]->Block( data ); // not to inflate
4827 if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
4829 // block _LayerEdge's, on top of which intFace is
4830 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
4832 const SMDS_MeshElement* srcFace =
4833 eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
4834 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
4835 while ( nIt->more() )
4837 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
4838 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
4839 if ( n2e != data._n2eMap.end() )
4840 n2e->second->Block( data );
4846 if ( isShorterDist )
4848 distToIntersection = dist;
4850 closestFace = intFace;
4853 } // if ( toBlockInfaltion || isShorterDist )
4854 } // loop on eos._edges
4855 } // loop on data._edgesOnShape
4860 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
4861 cout << "Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
4862 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
4863 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
4864 << ") distance = " << distToIntersection<< endl;
4871 //================================================================================
4873 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4874 * \param [in,out] badSmooEdges - _LayerEdge's to fix
4875 * \return int - resulting nb of bad _LayerEdge's
4877 //================================================================================
4879 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
4880 SMESH_MesherHelper& helper,
4881 vector< _LayerEdge* >& badSmooEdges,
4882 vector< _EdgesOnShape* >& eosC1,
4885 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
4887 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
4889 //data.UnmarkEdges();
4892 //size_t iniNbBad = badSmooEdges.size();
4893 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
4895 _LayerEdge* edge = badSmooEdges[i];
4896 if ( edge->NbSteps() < 2 /*|| edge->Is( _LayerEdge::MARKED )*/)
4899 _EdgesOnShape* eos = data.GetShapeEdges( edge );
4900 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
4901 edge->Block( data );
4902 //edge->Set( _LayerEdge::MARKED );
4904 // look for _LayerEdge's of bad _simplices
4905 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4906 const gp_XYZ& prevXYZ1 = edge->PrevCheckPos();
4907 const gp_XYZ& prevXYZ2 = edge->PrevPos();
4908 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4910 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) &&
4911 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol )))
4913 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
4914 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
4915 badSmooEdges.push_back( edge->_neibors[iN] );
4918 if ( eos->ShapeType() == TopAbs_VERTEX )
4920 // re-smooth on analytical EDGEs
4921 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
4922 while ( const TopoDS_Shape* e = eIt->next() )
4923 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
4924 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
4926 TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
4927 if ( eoe->SWOLType() == TopAbs_FACE ) {
4928 F = TopoDS::Face( eoe->_sWOL );
4929 surface = helper.GetSurface( F );
4931 eoe->_edgeSmoother->Perform( data, surface, F, helper );
4935 } // loop on badSmooEdges
4938 // check result of invalidation
4941 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4943 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
4945 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
4946 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
4947 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4948 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4949 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4950 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4953 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
4954 << " "<< tgtXYZ._node->GetID()
4955 << " "<< edge->_simplices[j]._nPrev->GetID()
4956 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4965 //================================================================================
4967 * \brief Create an offset surface
4969 //================================================================================
4971 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
4973 if ( eos._offsetSurf.IsNull() ||
4974 eos._edgeForOffset == 0 ||
4975 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
4978 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
4981 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
4982 gp_Pnt2d uv = baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
4983 double offset = baseSurface->Gap();
4985 eos._offsetSurf.Nullify();
4989 BRepOffsetAPI_MakeOffsetShape offsetMaker( eos._shape, -offset, Precision::Confusion() );
4990 if ( !offsetMaker.IsDone() ) return;
4992 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
4993 if ( !fExp.More() ) return;
4995 TopoDS_Face F = TopoDS::Face( fExp.Current() );
4996 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
4997 if ( surf.IsNull() ) return;
4999 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5001 catch ( Standard_Failure )
5006 //================================================================================
5008 * \brief Put nodes of a curved FACE to its offset surface
5010 //================================================================================
5012 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5017 if ( eos._offsetSurf.IsNull() ||
5018 eos.ShapeType() != TopAbs_FACE ||
5019 eos._edgeForOffset == 0 ||
5020 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5023 double preci = BRep_Tool::Tolerance( TopoDS::Face( eos._shape )), vol;
5024 for ( size_t i = 0; i < eos._edges.size(); ++i )
5026 _LayerEdge* edge = eos._edges[i];
5027 edge->Unset( _LayerEdge::MARKED );
5028 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5030 if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5033 int nbBlockedAround = 0;
5034 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5035 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5036 if ( nbBlockedAround > 1 )
5039 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5040 gp_Pnt2d uv = eos._offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5041 if ( eos._offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5042 edge->_curvature->_uv = uv;
5043 if ( eos._offsetSurf->Gap() < 10 * preci ) continue; // same pos
5045 gp_XYZ newP = eos._offsetSurf->Value( uv ).XYZ();
5046 gp_XYZ prevP = edge->PrevCheckPos();
5049 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5051 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5055 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5056 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5057 edge->_pos.back() = newP;
5059 edge->Set( _LayerEdge::MARKED );
5064 // dumpMove() for debug
5066 for ( ; i < eos._edges.size(); ++i )
5067 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5069 if ( i < eos._edges.size() )
5071 dumpFunction(SMESH_Comment("putOnOffsetSurface_F") << eos._shapeID
5072 << "_InfStep" << infStep << "_" << smooStep );
5073 for ( ; i < eos._edges.size(); ++i )
5075 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5076 dumpMove( eos._edges[i]->_nodes.back() );
5083 //================================================================================
5085 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5086 * _LayerEdge's to be in a consequent order
5088 //================================================================================
5090 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5092 SMESH_MesherHelper& helper)
5094 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5096 TopLoc_Location loc; double f,l;
5098 Handle(Geom_Line) line;
5099 Handle(Geom_Circle) circle;
5100 bool isLine, isCirc;
5101 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5103 // check if the EDGE is a line
5104 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5105 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5106 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5108 line = Handle(Geom_Line)::DownCast( curve );
5109 circle = Handle(Geom_Circle)::DownCast( curve );
5110 isLine = (!line.IsNull());
5111 isCirc = (!circle.IsNull());
5113 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5115 isLine = SMESH_Algo::IsStraight( E );
5118 line = new Geom_Line( gp::OX() ); // only type does matter
5120 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5125 else //////////////////////////////////////////////////////////////////////// 2D case
5127 if ( !eos._isRegularSWOL ) // 23190
5130 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5132 // check if the EDGE is a line
5133 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5134 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5135 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5137 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5138 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5139 isLine = (!line2d.IsNull());
5140 isCirc = (!circle2d.IsNull());
5142 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5145 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5146 while ( nIt->more() )
5147 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5148 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5150 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5151 for ( int i = 0; i < 2 && !isLine; ++i )
5152 isLine = ( size.Coord( i+1 ) <= lineTol );
5154 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5160 line = new Geom_Line( gp::OX() ); // only type does matter
5164 gp_Pnt2d p = circle2d->Location();
5165 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
5166 circle = new Geom_Circle( ax, 1.); // only center position does matter
5175 return Handle(Geom_Curve)();
5178 //================================================================================
5180 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
5182 //================================================================================
5184 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
5185 Handle(ShapeAnalysis_Surface)& surface,
5186 const TopoDS_Face& F,
5187 SMESH_MesherHelper& helper)
5189 if ( !isAnalytic() ) return false;
5191 const size_t iFrom = 0, iTo = _eos._edges.size();
5193 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
5195 if ( F.IsNull() ) // 3D
5197 SMESH_TNodeXYZ p0 ( _eos._edges[iFrom]->_2neibors->tgtNode(0) );
5198 SMESH_TNodeXYZ p1 ( _eos._edges[iTo-1]->_2neibors->tgtNode(1) );
5199 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
5200 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
5202 for ( size_t i = iFrom; i < iTo; ++i )
5204 _LayerEdge* edge = _eos._edges[i];
5205 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
5206 newPos = p0 * ( 1. - _leParams[i] ) + p1 * _leParams[i];
5208 if ( _eos._edges[i]->Is( _LayerEdge::NORMAL_UPDATED ))
5210 gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
5211 gp_XYZ lineDir = pSrc1 - pSrc0;
5212 double shift = ( lineDir * ( newPos - pSrc0 ) -
5213 lineDir * ( curPos - pSrc0 ));
5214 newPos = curPos + lineDir * shift / lineDir.SquareModulus();
5216 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED ))
5218 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
5219 double curThick = pSrc.SquareDistance( tgtNode );
5220 double newThink = ( pSrc - newPos ).SquareModulus();
5221 if ( newThink > curThick )
5224 edge->_pos.back() = newPos;
5225 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5226 dumpMove( tgtNode );
5231 _LayerEdge* e0 = getLEdgeOnV( 0 );
5232 _LayerEdge* e1 = getLEdgeOnV( 1 );
5233 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ));
5234 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ));
5235 if ( e0->_nodes.back() == e1->_nodes.back() ) // closed edge
5237 int iPeriodic = helper.GetPeriodicIndex();
5238 if ( iPeriodic == 1 || iPeriodic == 2 )
5240 uv1.SetCoord( iPeriodic, helper.GetOtherParam( uv1.Coord( iPeriodic )));
5241 if ( uv0.Coord( iPeriodic ) > uv1.Coord( iPeriodic ))
5242 std::swap( uv0, uv1 );
5245 const gp_XY rangeUV = uv1 - uv0;
5246 for ( size_t i = iFrom; i < iTo; ++i )
5248 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5249 gp_XY newUV = uv0 + _leParams[i] * rangeUV;
5250 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
5252 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
5253 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5254 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5255 dumpMove( tgtNode );
5257 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
5258 pos->SetUParameter( newUV.X() );
5259 pos->SetVParameter( newUV.Y() );
5265 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
5267 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
5268 gp_Pnt center3D = circle->Location();
5270 if ( F.IsNull() ) // 3D
5272 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
5273 return true; // closed EDGE - nothing to do
5275 // circle is a real curve of EDGE
5276 gp_Circ circ = circle->Circ();
5278 // new center is shifted along its axis
5279 const gp_Dir& axis = circ.Axis().Direction();
5280 _LayerEdge* e0 = getLEdgeOnV(0);
5281 _LayerEdge* e1 = getLEdgeOnV(1);
5282 SMESH_TNodeXYZ p0 = e0->_nodes.back();
5283 SMESH_TNodeXYZ p1 = e1->_nodes.back();
5284 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
5285 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
5286 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
5288 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
5290 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
5291 gp_Circ newCirc( newAxis, newRadius );
5292 gp_Vec vecC1 ( newCenter, p1 );
5294 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
5298 for ( size_t i = iFrom; i < iTo; ++i )
5300 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5301 double u = uLast * _leParams[i];
5302 gp_Pnt p = ElCLib::Value( u, newCirc );
5303 _eos._edges[i]->_pos.back() = p.XYZ();
5305 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5306 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
5307 dumpMove( tgtNode );
5313 const gp_XY center( center3D.X(), center3D.Y() );
5315 _LayerEdge* e0 = getLEdgeOnV(0);
5316 _LayerEdge* eM = _eos._edges[ 0 ];
5317 _LayerEdge* e1 = getLEdgeOnV(1);
5318 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
5319 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
5320 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
5321 gp_Vec2d vec0( center, uv0 );
5322 gp_Vec2d vecM( center, uvM );
5323 gp_Vec2d vec1( center, uv1 );
5324 double uLast = vec0.Angle( vec1 ); // -PI - +PI
5325 double uMidl = vec0.Angle( vecM );
5326 if ( uLast * uMidl <= 0. )
5327 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
5328 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
5330 gp_Ax2d axis( center, vec0 );
5331 gp_Circ2d circ( axis, radius );
5332 for ( size_t i = iFrom; i < iTo; ++i )
5334 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5335 double newU = uLast * _leParams[i];
5336 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
5337 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
5339 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
5340 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5341 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5342 dumpMove( tgtNode );
5344 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
5345 pos->SetUParameter( newUV.X() );
5346 pos->SetVParameter( newUV.Y() );
5355 //================================================================================
5357 * \brief smooth _LayerEdge's on a an EDGE
5359 //================================================================================
5361 bool _Smoother1D::smoothComplexEdge( _SolidData& data,
5362 Handle(ShapeAnalysis_Surface)& surface,
5363 const TopoDS_Face& F,
5364 SMESH_MesherHelper& helper)
5366 if ( _offPoints.empty() )
5369 // move _offPoints to positions along normals of _LayerEdge's
5371 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
5372 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED )) setNormalOnV( 0, helper );
5373 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED )) setNormalOnV( 1, helper );
5374 _leOnV[0]._len = e[0]->_len;
5375 _leOnV[1]._len = e[1]->_len;
5376 for ( size_t i = 0; i < _offPoints.size(); i++ )
5378 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
5379 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
5380 const double w0 = _offPoints[i]._2edges._wgt[0];
5381 const double w1 = _offPoints[i]._2edges._wgt[1];
5382 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
5383 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
5384 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
5386 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
5387 _offPoints[i]._len = avgLen;
5391 if ( !surface.IsNull() ) // project _offPoints to the FACE
5393 fTol = 100 * BRep_Tool::Tolerance( F );
5394 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
5396 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
5397 //if ( surface->Gap() < 0.5 * segLen )
5398 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
5400 for ( size_t i = 1; i < _offPoints.size(); ++i )
5402 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
5403 //if ( surface->Gap() < 0.5 * segLen )
5404 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
5408 // project tgt nodes of extreme _LayerEdge's to the offset segments
5410 gp_Pnt pExtreme[2], pProj[2];
5411 for ( int is2nd = 0; is2nd < 2; ++is2nd )
5413 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
5414 int i = _iSeg[ is2nd ];
5415 int di = is2nd ? -1 : +1;
5416 bool projected = false;
5417 double uOnSeg, uOnSegDiff, uOnSegBestDiff = Precision::Infinite(), uOnSegPrevDiff;
5420 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
5421 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
5422 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude();
5423 uOnSegDiff = Abs( uOnSeg - 0.5 );
5424 projected = ( uOnSegDiff <= 0.5 );
5425 if ( uOnSegDiff < uOnSegBestDiff )
5428 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
5429 uOnSegBestDiff = uOnSegDiff;
5431 else if ( uOnSegDiff > uOnSegPrevDiff )
5433 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
5436 uOnSegPrevDiff = uOnSegDiff;
5439 while ( !projected &&
5440 i >= 0 && i+1 < (int)_offPoints.size() );
5444 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
5447 _iSeg[1] = _offPoints.size()-2;
5448 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
5453 if ( _iSeg[0] > _iSeg[1] )
5455 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
5459 // compute normalized length of the offset segments located between the projections
5461 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
5462 vector< double > len( nbSeg + 1 );
5464 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
5465 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
5467 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
5469 len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
5471 double d0 = pProj[0].Distance( pExtreme[0]);
5472 double d1 = pProj[1].Distance( pExtreme[1]);
5473 double fullLen = len.back() - d0 - d1;
5474 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
5475 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
5477 // temporary replace extreme _offPoints by pExtreme
5478 gp_XYZ op[2] = { _offPoints[ _iSeg[0] ]._xyz,
5479 _offPoints[ _iSeg[1]+1 ]._xyz };
5480 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
5481 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
5483 // distribute tgt nodes of _LayerEdge's between the projections
5486 for ( size_t i = 0; i < _eos._edges.size(); ++i )
5488 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5489 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
5491 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
5492 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
5493 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
5495 if ( surface.IsNull() )
5497 _eos._edges[i]->_pos.back() = p;
5499 else // project a new node position to a FACE
5501 gp_Pnt2d uv ( _eos._edges[i]->_pos.back().X(), _eos._edges[i]->_pos.back().Y() );
5502 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
5504 p = surface->Value( uv2 ).XYZ();
5505 _eos._edges[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
5507 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5508 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
5509 dumpMove( tgtNode );
5512 _offPoints[ _iSeg[0] ]._xyz = op[0];
5513 _offPoints[ _iSeg[1]+1 ]._xyz = op[1];
5518 //================================================================================
5520 * \brief Prepare for smoothing
5522 //================================================================================
5524 void _Smoother1D::prepare(_SolidData& data)
5526 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
5527 _curveLen = SMESH_Algo::EdgeLength( E );
5529 // sort _LayerEdge's by position on the EDGE
5530 data.SortOnEdge( E, _eos._edges );
5532 SMESH_MesherHelper& helper = data.GetHelper();
5534 // compute normalized param of _eos._edges on EDGE
5535 _leParams.resize( _eos._edges.size() + 1 );
5537 double curLen, prevLen = _leParams[0] = 1.0;
5538 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
5540 for ( size_t i = 0; i < _eos._edges.size(); ++i )
5542 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
5543 //curLen = prevLen * _eos._edges[i]->_2neibors->_wgt[1] / _eos._edges[i]->_2neibors->_wgt[0];
5544 curLen = p.Distance( pPrev );
5545 _leParams[i+1] = _leParams[i] + curLen;
5549 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
5550 for ( size_t i = 0; i < _leParams.size()-1; ++i )
5551 _leParams[i] = _leParams[i+1] / fullLen;
5554 // find intersection of neighbor _LayerEdge's to limit _maxLen
5555 // according to EDGE curvature (IPAL52648)
5556 _LayerEdge* e0 = _eos._edges[0];
5557 for ( size_t i = 1; i < _eos._edges.size(); ++i )
5559 _LayerEdge* ei = _eos._edges[i];
5560 gp_XYZ plnNorm = e0->_normal ^ ei->_normal;
5561 gp_XYZ perp0 = e0->_normal ^ plnNorm;
5562 double dot0i = perp0 * ei->_normal;
5563 if ( Abs( dot0i ) > std::numeric_limits<double>::min() )
5565 SMESH_TNodeXYZ srci( ei->_nodes[0] ), src0( e0->_nodes[0] );
5566 double ui = ( perp0 * ( src0 - srci )) / dot0i;
5569 ei->_maxLen = Min( ei->_maxLen, 0.75 * ui / ei->_lenFactor );
5570 if ( ei->_maxLen < ei->_len )
5572 ei->InvalidateStep( ei->NbSteps(), _eos, /*restoreLength=*/true );
5573 ei->SetNewLength( ei->_maxLen, _eos, helper );
5576 gp_Pnt pi = srci + ei->_normal * ui;
5577 double u0 = pi.Distance( src0 );
5578 e0->_maxLen = Min( e0->_maxLen, 0.75 * u0 / e0->_lenFactor );
5579 if ( e0->_maxLen < e0->_len )
5581 e0->InvalidateStep( e0->NbSteps(), _eos, /*restoreLength=*/true );
5582 e0->SetNewLength( e0->_maxLen, _eos, helper );
5593 // divide E to have offset segments with low deflection
5594 BRepAdaptor_Curve c3dAdaptor( E );
5595 const double curDeflect = 0.1; //0.3; // 0.01; // Curvature deflection
5596 const double angDeflect = 0.1; //0.2; // 0.09; // Angular deflection
5597 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
5598 if ( discret.NbPoints() <= 2 )
5600 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
5604 const double edgeLen = SMESH_Algo::EdgeLength( E );
5605 const double u0 = c3dAdaptor.FirstParameter();
5606 _offPoints.resize( discret.NbPoints() );
5607 for ( size_t i = 0; i < _offPoints.size(); i++ )
5609 _offPoints[i]._xyz = discret.Value( i+1 ).XYZ();
5610 // use OffPnt::_len to TEMPORARY store normalized param of an offset point
5611 double u = discret.Parameter( i+1 );
5612 _offPoints[i]._len = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / edgeLen;
5615 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
5618 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
5619 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
5620 _2NearEdges tmp2edges;
5621 tmp2edges._edges[1] = _eos._edges[0];
5622 _leOnV[0]._2neibors = & tmp2edges;
5623 _leOnV[0]._nodes = leOnV[0]->_nodes;
5624 _leOnV[1]._nodes = leOnV[1]->_nodes;
5625 _LayerEdge* eNext, *ePrev = & _leOnV[0];
5626 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
5628 // find _LayerEdge's located before and after an offset point
5629 // (_eos._edges[ iLE ] is next after ePrev)
5630 while ( iLE < _eos._edges.size() && _offPoints[i]._len > _leParams[ iLE ] )
5631 ePrev = _eos._edges[ iLE++ ];
5632 eNext = ePrev->_2neibors->_edges[1];
5634 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
5635 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
5636 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
5637 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
5640 int iLBO = _offPoints.size() - 2; // last but one
5641 _offPoints[iLBO]._2edges._edges[1] = & _leOnV[1];
5644 // TopoDS_Face face[2]; // FACEs sharing the EDGE
5645 // PShapeIteratorPtr fIt = helper.GetAncestors( _eos._shape, *helper.GetMesh(), TopAbs_FACE );
5646 // while ( const TopoDS_Shape* F = fIt->next() )
5648 // TGeomID fID = helper.GetMeshDS()->ShapeToIndex( *F );
5649 // if ( ! data._ignoreFaceIds.count( fID ))
5650 // face[ !face[0].IsNull() ] = *F;
5652 // if ( face[0].IsNull() ) return;
5653 // if ( face[1].IsNull() ) face[1] = face[0];
5657 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
5659 setNormalOnV( 0, data.GetHelper() );
5660 setNormalOnV( 1, data.GetHelper() );
5661 _leOnV[ 0 ]._len = 0;
5662 _leOnV[ 1 ]._len = 0;
5663 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
5664 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
5667 _iSeg[1] = _offPoints.size()-2;
5669 // initialize OffPnt::_len
5670 for ( size_t i = 0; i < _offPoints.size(); ++i )
5671 _offPoints[i]._len = 0;
5673 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
5675 _leOnV[0]._len = leOnV[0]->_len;
5676 _leOnV[1]._len = leOnV[1]->_len;
5677 for ( size_t i = 0; i < _offPoints.size(); i++ )
5679 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
5680 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
5681 const double w0 = _offPoints[i]._2edges._wgt[0];
5682 const double w1 = _offPoints[i]._2edges._wgt[1];
5683 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
5684 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
5685 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
5686 _offPoints[i]._xyz = avgXYZ;
5687 _offPoints[i]._len = avgLen;
5692 //================================================================================
5694 * \brief set _normal of _leOnV[is2nd] to be normal to the EDGE
5696 //================================================================================
5698 void _Smoother1D::setNormalOnV( const bool is2nd,
5699 SMESH_MesherHelper& helper)
5701 _LayerEdge* leOnV = getLEdgeOnV( is2nd );
5702 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
5703 TopoDS_Shape V = helper.GetSubShapeByNode( leOnV->_nodes[0], helper.GetMeshDS() );
5704 gp_XYZ eDir = getEdgeDir( E, TopoDS::Vertex( V ));
5705 gp_XYZ cross = leOnV->_normal ^ eDir;
5706 gp_XYZ norm = eDir ^ cross;
5707 double size = norm.Modulus();
5709 _leOnV[ is2nd ]._normal = norm / size;
5712 //================================================================================
5714 * \brief Sort _LayerEdge's by a parameter on a given EDGE
5716 //================================================================================
5718 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
5719 vector< _LayerEdge* >& edges)
5721 map< double, _LayerEdge* > u2edge;
5722 for ( size_t i = 0; i < edges.size(); ++i )
5723 u2edge.insert( u2edge.end(),
5724 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
5726 ASSERT( u2edge.size() == edges.size() );
5727 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
5728 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
5729 edges[i] = u2e->second;
5731 Sort2NeiborsOnEdge( edges );
5734 //================================================================================
5736 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
5738 //================================================================================
5740 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
5742 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
5744 for ( size_t i = 0; i < edges.size()-1; ++i )
5745 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
5746 edges[i]->_2neibors->reverse();
5748 const size_t iLast = edges.size() - 1;
5749 if ( edges.size() > 1 &&
5750 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
5751 edges[iLast]->_2neibors->reverse();
5754 //================================================================================
5756 * \brief Return _EdgesOnShape* corresponding to the shape
5758 //================================================================================
5760 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
5762 if ( shapeID < (int)_edgesOnShape.size() &&
5763 _edgesOnShape[ shapeID ]._shapeID == shapeID )
5764 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
5766 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
5767 if ( _edgesOnShape[i]._shapeID == shapeID )
5768 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
5773 //================================================================================
5775 * \brief Return _EdgesOnShape* corresponding to the shape
5777 //================================================================================
5779 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
5781 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
5782 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
5785 //================================================================================
5787 * \brief Prepare data of the _LayerEdge for smoothing on FACE
5789 //================================================================================
5791 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
5793 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
5795 set< TGeomID > vertices;
5797 if ( eos->ShapeType() == TopAbs_FACE )
5799 // check FACE concavity and get concave VERTEXes
5800 F = TopoDS::Face( eos->_shape );
5801 if ( isConcave( F, helper, &vertices ))
5802 _concaveFaces.insert( eos->_shapeID );
5804 // set eos._eosConcaVer
5805 eos->_eosConcaVer.clear();
5806 eos->_eosConcaVer.reserve( vertices.size() );
5807 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
5809 _EdgesOnShape* eov = GetShapeEdges( *v );
5810 if ( eov && eov->_edges.size() == 1 )
5812 eos->_eosConcaVer.push_back( eov );
5813 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
5814 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
5818 // SetSmooLen() to _LayerEdge's on FACE
5819 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5821 eos->_edges[i]->SetSmooLen( Precision::Infinite() );
5823 SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
5824 while ( smIt->more() ) // loop on sub-shapes of the FACE
5826 _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
5827 if ( !eoe ) continue;
5829 vector<_LayerEdge*>& eE = eoe->_edges;
5830 for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
5832 if ( eE[iE]->_cosin <= theMinSmoothCosin )
5835 SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
5836 while ( segIt->more() )
5838 const SMDS_MeshElement* seg = segIt->next();
5839 if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
5841 if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
5842 continue; // not to check a seg twice
5843 for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
5845 _LayerEdge* eN = eE[iE]->_neibors[iN];
5846 if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
5848 double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
5849 double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
5850 eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
5851 eN->Set( _LayerEdge::NEAR_BOUNDARY );
5856 } // if ( eos->ShapeType() == TopAbs_FACE )
5858 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5860 eos->_edges[i]->_smooFunction = 0;
5861 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
5863 bool isCurved = false;
5864 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5866 _LayerEdge* edge = eos->_edges[i];
5868 // get simplices sorted
5869 _Simplex::SortSimplices( edge->_simplices );
5871 // smoothing function
5872 edge->ChooseSmooFunction( vertices, _n2eMap );
5875 double avgNormProj = 0, avgLen = 0;
5876 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
5878 _Simplex& s = edge->_simplices[iS];
5880 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
5881 avgNormProj += edge->_normal * vec;
5882 avgLen += vec.Modulus();
5883 if ( substituteSrcNodes )
5885 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
5886 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
5889 avgNormProj /= edge->_simplices.size();
5890 avgLen /= edge->_simplices.size();
5891 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
5894 SMDS_FacePosition* fPos = dynamic_cast<SMDS_FacePosition*>( edge->_nodes[0]->GetPosition() );
5896 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
5897 fPos = dynamic_cast<SMDS_FacePosition*>( edge->_simplices[iS]._nPrev->GetPosition() );
5899 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
5903 // prepare for putOnOffsetSurface()
5904 if (( eos->ShapeType() == TopAbs_FACE ) &&
5905 ( isCurved || !eos->_eosConcaVer.empty() ))
5907 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
5908 eos->_edgeForOffset = 0;
5910 double maxCosin = -1;
5911 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
5913 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
5914 if ( !eoe || eoe->_edges.empty() ) continue;
5916 vector<_LayerEdge*>& eE = eoe->_edges;
5917 _LayerEdge* e = eE[ eE.size() / 2 ];
5918 if ( e->_cosin > maxCosin )
5920 eos->_edgeForOffset = e;
5921 maxCosin = e->_cosin;
5927 //================================================================================
5929 * \brief Add faces for smoothing
5931 //================================================================================
5933 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
5934 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
5936 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
5937 for ( ; eos != eosToSmooth.end(); ++eos )
5939 if ( !*eos || (*eos)->_toSmooth ) continue;
5941 (*eos)->_toSmooth = true;
5943 if ( (*eos)->ShapeType() == TopAbs_FACE )
5945 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
5946 (*eos)->_toSmooth = true;
5950 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
5951 if ( edgesNoAnaSmooth )
5952 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
5954 if ( (*eos)->_edgeSmoother )
5955 (*eos)->_edgeSmoother->_anaCurve.Nullify();
5959 //================================================================================
5961 * \brief Fill data._collisionEdges
5963 //================================================================================
5965 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
5967 data._collisionEdges.clear();
5969 // set the full thickness of the layers to LEs
5970 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5972 _EdgesOnShape& eos = data._edgesOnShape[iS];
5973 if ( eos._edges.empty() ) continue;
5974 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
5976 for ( size_t i = 0; i < eos._edges.size(); ++i )
5978 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5979 double maxLen = eos._edges[i]->_maxLen;
5980 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
5981 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
5982 eos._edges[i]->_maxLen = maxLen;
5986 // make temporary quadrangles got by extrusion of
5987 // mesh edges along _LayerEdge._normal's
5989 vector< const SMDS_MeshElement* > tmpFaces;
5991 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5993 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5994 if ( eos.ShapeType() != TopAbs_EDGE )
5996 if ( eos._edges.empty() )
5998 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
5999 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
6000 while ( smIt->more() )
6001 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
6002 if ( eov->_edges.size() == 1 )
6003 edge[ bool( edge[0]) ] = eov->_edges[0];
6007 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
6008 tmpFaces.push_back( f );
6011 for ( size_t i = 0; i < eos._edges.size(); ++i )
6013 _LayerEdge* edge = eos._edges[i];
6014 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
6016 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
6017 if ( src2->GetPosition()->GetDim() > 0 &&
6018 src2->GetID() < edge->_nodes[0]->GetID() )
6019 continue; // avoid using same segment twice
6021 // a _LayerEdge containg tgt2
6022 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
6024 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
6025 tmpFaces.push_back( f );
6030 // Find _LayerEdge's intersecting tmpFaces.
6032 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
6034 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
6035 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
6037 double dist1, dist2, segLen, eps;
6038 _CollisionEdges collEdges;
6039 vector< const SMDS_MeshElement* > suspectFaces;
6040 const double angle30 = Cos( 30. * M_PI / 180. );
6042 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6044 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6045 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
6047 // find sub-shapes whose VL can influence VL on eos
6048 set< TGeomID > neighborShapes;
6049 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
6050 while ( const TopoDS_Shape* face = fIt->next() )
6052 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
6053 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
6055 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6056 while ( subIt->more() )
6057 neighborShapes.insert( subIt->next()->GetId() );
6060 if ( eos.ShapeType() == TopAbs_VERTEX )
6062 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
6063 while ( const TopoDS_Shape* edge = eIt->next() )
6064 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
6066 // find intersecting _LayerEdge's
6067 for ( size_t i = 0; i < eos._edges.size(); ++i )
6069 _LayerEdge* edge = eos._edges[i];
6070 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
6071 eps = 0.5 * edge->_len;
6074 gp_Vec eSegDir0, eSegDir1;
6075 if ( edge->IsOnEdge() )
6077 SMESH_TNodeXYZ eP( edge->_nodes[0] );
6078 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
6079 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
6081 suspectFaces.clear();
6082 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len,
6083 SMDSAbs_Face, suspectFaces );
6084 collEdges._intEdges.clear();
6085 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
6087 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
6088 if ( f->_le1 == edge || f->_le2 == edge ) continue;
6089 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
6090 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
6091 if ( edge->IsOnEdge() ) {
6092 if ( edge->_2neibors->include( f->_le1 ) ||
6093 edge->_2neibors->include( f->_le2 )) continue;
6096 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
6097 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
6099 dist1 = dist2 = Precision::Infinite();
6100 if ( !edge->SegTriaInter( lastSegment, f->_nn[0], f->_nn[1], f->_nn[2], dist1, eps ))
6101 dist1 = Precision::Infinite();
6102 if ( !edge->SegTriaInter( lastSegment, f->_nn[3], f->_nn[2], f->_nn[0], dist2, eps ))
6103 dist2 = Precision::Infinite();
6104 if (( dist1 > segLen ) && ( dist2 > segLen ))
6107 if ( edge->IsOnEdge() )
6109 // skip perpendicular EDGEs
6110 gp_Vec fSegDir = SMESH_TNodeXYZ( f->_nn[0] ) - SMESH_TNodeXYZ( f->_nn[3] );
6111 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle30 ) ||
6112 isLessAngle( eSegDir1, fSegDir, angle30 ) ||
6113 isLessAngle( eSegDir0, fSegDir.Reversed(), angle30 ) ||
6114 isLessAngle( eSegDir1, fSegDir.Reversed(), angle30 ));
6119 // either limit inflation of edges or remember them for updating _normal
6120 // double dot = edge->_normal * f->GetDir();
6123 collEdges._intEdges.push_back( f->_le1 );
6124 collEdges._intEdges.push_back( f->_le2 );
6128 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
6129 // edge->_maxLen = Min( shortLen, edge->_maxLen );
6133 if ( !collEdges._intEdges.empty() )
6135 collEdges._edge = edge;
6136 data._collisionEdges.push_back( collEdges );
6141 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
6144 // restore the zero thickness
6145 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6147 _EdgesOnShape& eos = data._edgesOnShape[iS];
6148 if ( eos._edges.empty() ) continue;
6149 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
6151 for ( size_t i = 0; i < eos._edges.size(); ++i )
6153 eos._edges[i]->InvalidateStep( 1, eos );
6154 eos._edges[i]->_len = 0;
6159 //================================================================================
6161 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
6162 * _LayerEdge's on neighbor EDGE's
6164 //================================================================================
6166 bool _ViscousBuilder::updateNormals( _SolidData& data,
6167 SMESH_MesherHelper& helper,
6171 updateNormalsOfC1Vertices( data );
6173 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
6176 // map to store new _normal and _cosin for each intersected edge
6177 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
6178 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
6179 _LayerEdge zeroEdge;
6180 zeroEdge._normal.SetCoord( 0,0,0 );
6181 zeroEdge._maxLen = Precision::Infinite();
6182 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
6184 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
6186 double segLen, dist1, dist2;
6187 vector< pair< _LayerEdge*, double > > intEdgesDist;
6188 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
6190 for ( int iter = 0; iter < 5; ++iter )
6192 edge2newEdge.clear();
6194 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
6196 _CollisionEdges& ce = data._collisionEdges[iE];
6197 _LayerEdge* edge1 = ce._edge;
6198 if ( !edge1 || edge1->Is( _LayerEdge::BLOCKED )) continue;
6199 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
6200 if ( !eos1 ) continue;
6202 // detect intersections
6203 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
6204 double testLen = 1.5 * edge1->_maxLen; //2 + edge1->_len * edge1->_lenFactor;
6205 double eps = 0.5 * edge1->_len;
6206 intEdgesDist.clear();
6207 double minIntDist = Precision::Infinite();
6208 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
6210 if ( ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) ||
6211 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
6213 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
6214 double fact = ( 1.1 + dot * dot );
6215 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
6216 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
6217 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
6218 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
6219 dist1 = dist2 = Precision::Infinite();
6220 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pTgt0, pSrc1, dist1, eps ) &&
6221 !edge1->SegTriaInter( lastSeg, pSrc1, pTgt1, pTgt0, dist2, eps ))
6223 if (( dist1 > testLen || dist1 < 0 ) &&
6224 ( dist2 > testLen || dist2 < 0 ))
6227 // choose a closest edge
6228 gp_Pnt intP( lastSeg.Location().XYZ() +
6229 lastSeg.Direction().XYZ() * ( Min( dist1, dist2 ) + segLen ));
6230 double d1 = intP.SquareDistance( pSrc0 );
6231 double d2 = intP.SquareDistance( pSrc1 );
6232 int iClose = i + ( d2 < d1 );
6233 _LayerEdge* edge2 = ce._intEdges[iClose];
6234 edge2->Unset( _LayerEdge::MARKED );
6236 // choose a closest edge among neighbors
6237 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
6238 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
6239 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
6241 _LayerEdge * edgeJ = intEdgesDist[j].first;
6242 if ( edge2->IsNeiborOnEdge( edgeJ ))
6244 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
6245 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
6248 intEdgesDist.push_back( make_pair( edge2, Min( dist1, dist2 )));
6249 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
6251 // iClose = i + !( d2 < d1 );
6252 // intEdges.push_back( ce._intEdges[iClose] );
6253 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
6255 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist1, minIntDist );
6256 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist2, minIntDist );
6261 // compute new _normals
6262 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
6264 _LayerEdge* edge2 = intEdgesDist[i].first;
6265 double distWgt = edge1->_len / intEdgesDist[i].second;
6266 if ( edge2->Is( _LayerEdge::MARKED )) continue;
6267 edge2->Set( _LayerEdge::MARKED );
6270 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
6272 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
6273 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
6274 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
6275 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
6276 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
6277 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
6278 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
6279 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
6280 newNormal.Normalize();
6284 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
6285 if ( cos1 < theMinSmoothCosin )
6287 newCos = cos2 * sgn1;
6289 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
6291 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
6295 newCos = edge1->_cosin;
6298 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
6299 e2neIt->second._normal += distWgt * newNormal;
6300 e2neIt->second._cosin = newCos;
6301 e2neIt->second._maxLen = 0.7 * minIntDist / edge1->_lenFactor;
6302 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
6303 e2neIt->second._normal += dir2;
6304 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
6305 e2neIt->second._normal += distWgt * newNormal;
6306 e2neIt->second._cosin = edge2->_cosin;
6307 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
6308 e2neIt->second._normal += dir1;
6312 if ( edge2newEdge.empty() )
6313 break; //return true;
6315 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
6317 // Update data of edges depending on a new _normal
6320 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
6322 _LayerEdge* edge = e2neIt->first;
6323 _LayerEdge& newEdge = e2neIt->second;
6324 _EdgesOnShape* eos = data.GetShapeEdges( edge );
6326 // Check if a new _normal is OK:
6327 newEdge._normal.Normalize();
6328 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
6330 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
6332 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6333 edge->_maxLen = newEdge._maxLen;
6334 edge->SetNewLength( newEdge._maxLen, *eos, helper );
6336 continue; // the new _normal is bad
6338 // the new _normal is OK
6340 // find shapes that need smoothing due to change of _normal
6341 if ( edge->_cosin < theMinSmoothCosin &&
6342 newEdge._cosin > theMinSmoothCosin )
6344 if ( eos->_sWOL.IsNull() )
6346 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
6347 while ( fIt->more() )
6348 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
6350 else // edge inflates along a FACE
6352 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
6353 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE );
6354 while ( const TopoDS_Shape* E = eIt->next() )
6356 if ( !helper.IsSubShape( *E, /*FACE=*/eos->_sWOL ))
6358 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ));
6359 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
6360 if ( angle < M_PI / 2 )
6361 shapesToSmooth.insert( data.GetShapeEdges( *E ));
6366 double len = edge->_len;
6367 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6368 edge->SetNormal( newEdge._normal );
6369 edge->SetCosin( newEdge._cosin );
6370 edge->SetNewLength( len, *eos, helper );
6371 edge->Set( _LayerEdge::MARKED );
6372 edge->Set( _LayerEdge::NORMAL_UPDATED );
6373 edgesNoAnaSmooth.insert( eos );
6376 // Update normals and other dependent data of not intersecting _LayerEdge's
6377 // neighboring the intersecting ones
6379 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
6381 _LayerEdge* edge1 = e2neIt->first;
6382 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
6383 if ( !edge1->Is( _LayerEdge::MARKED ))
6386 if ( edge1->IsOnEdge() )
6388 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
6389 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
6390 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
6393 if ( !edge1->_2neibors )
6395 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
6397 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
6398 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
6399 continue; // j-th neighbor is also intersected
6400 _LayerEdge* prevEdge = edge1;
6401 const int nbSteps = 10;
6402 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
6404 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
6405 neighbor->Is( _LayerEdge::MARKED ))
6407 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
6408 if ( !eos ) continue;
6409 _LayerEdge* nextEdge = neighbor;
6410 if ( neighbor->_2neibors )
6413 nextEdge = neighbor->_2neibors->_edges[iNext];
6414 if ( nextEdge == prevEdge )
6415 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
6417 double r = double(step-1)/nbSteps;
6418 if ( !nextEdge->_2neibors )
6421 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
6422 newNorm.Normalize();
6423 if ( !isNewNormalOk( data, *neighbor, newNorm ))
6426 double len = neighbor->_len;
6427 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6428 neighbor->SetNormal( newNorm );
6429 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
6430 if ( neighbor->_2neibors )
6431 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
6432 neighbor->SetNewLength( len, *eos, helper );
6433 neighbor->Set( _LayerEdge::MARKED );
6434 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
6435 edgesNoAnaSmooth.insert( eos );
6437 if ( !neighbor->_2neibors )
6438 break; // neighbor is on VERTEX
6440 // goto the next neighbor
6441 prevEdge = neighbor;
6442 neighbor = nextEdge;
6449 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
6454 //================================================================================
6456 * \brief Check if a new normal is OK
6458 //================================================================================
6460 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
6462 const gp_XYZ& newNormal)
6464 // check a min angle between the newNormal and surrounding faces
6465 vector<_Simplex> simplices;
6466 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
6467 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
6468 double newMinDot = 1, curMinDot = 1;
6469 for ( size_t i = 0; i < simplices.size(); ++i )
6471 n1.Set( simplices[i]._nPrev );
6472 n2.Set( simplices[i]._nNext );
6473 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
6474 double normLen2 = normFace.SquareModulus();
6475 if ( normLen2 < std::numeric_limits<double>::min() )
6477 normFace /= Sqrt( normLen2 );
6478 newMinDot = Min( newNormal * normFace, newMinDot );
6479 curMinDot = Min( edge._normal * normFace, curMinDot );
6481 if ( newMinDot < 0.5 )
6483 return ( newMinDot >= curMinDot * 0.9 );
6484 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
6485 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
6486 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
6491 //================================================================================
6493 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
6495 //================================================================================
6497 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
6498 SMESH_MesherHelper& helper,
6500 const double stepSize )
6502 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
6503 return true; // no shapes needing smoothing
6505 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6507 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6508 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
6509 !eos._hyp.ToSmooth() ||
6510 eos.ShapeType() != TopAbs_FACE ||
6511 eos._edges.empty() )
6514 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
6515 if ( !toSmooth ) continue;
6517 for ( size_t i = 0; i < eos._edges.size(); ++i )
6519 _LayerEdge* edge = eos._edges[i];
6520 if ( !edge->Is( _LayerEdge::SMOOTHED ))
6522 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
6525 const gp_XYZ& pPrev = edge->PrevPos();
6526 const gp_XYZ& pLast = edge->_pos.back();
6527 gp_XYZ stepVec = pLast - pPrev;
6528 double realStepSize = stepVec.Modulus();
6529 if ( realStepSize < numeric_limits<double>::min() )
6532 edge->_lenFactor = realStepSize / stepSize;
6533 edge->_normal = stepVec / realStepSize;
6534 edge->Set( _LayerEdge::NORMAL_UPDATED );
6541 //================================================================================
6543 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
6545 //================================================================================
6547 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
6549 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6551 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
6552 if ( eov._eosC1.empty() ||
6553 eov.ShapeType() != TopAbs_VERTEX ||
6554 eov._edges.empty() )
6557 gp_XYZ newNorm = eov._edges[0]->_normal;
6558 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
6559 bool normChanged = false;
6561 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
6563 _EdgesOnShape* eoe = eov._eosC1[i];
6564 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
6565 const double eLen = SMESH_Algo::EdgeLength( e );
6566 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
6567 if ( oppV.IsSame( eov._shape ))
6568 oppV = SMESH_MesherHelper::IthVertex( 1, e );
6569 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
6570 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
6572 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
6573 if ( curThickOpp + curThick < eLen )
6576 double wgt = 2. * curThick / eLen;
6577 newNorm += wgt * eovOpp->_edges[0]->_normal;
6582 eov._edges[0]->SetNormal( newNorm.Normalized() );
6583 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
6588 //================================================================================
6590 * \brief Modify normals of _LayerEdge's on _ConvexFace's
6592 //================================================================================
6594 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
6595 SMESH_MesherHelper& helper,
6598 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
6601 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
6602 for ( ; id2face != data._convexFaces.end(); ++id2face )
6604 _ConvexFace & convFace = (*id2face).second;
6605 if ( convFace._normalsFixed )
6606 continue; // already fixed
6607 if ( convFace.CheckPrisms() )
6608 continue; // nothing to fix
6610 convFace._normalsFixed = true;
6612 BRepAdaptor_Surface surface ( convFace._face, false );
6613 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
6615 // check if the convex FACE is of spherical shape
6617 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
6621 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
6622 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6624 _EdgesOnShape& eos = *(id2eos->second);
6625 if ( eos.ShapeType() == TopAbs_VERTEX )
6627 _LayerEdge* ledge = eos._edges[ 0 ];
6628 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
6629 centersBox.Add( center );
6631 for ( size_t i = 0; i < eos._edges.size(); ++i )
6632 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
6634 if ( centersBox.IsVoid() )
6636 debugMsg( "Error: centersBox.IsVoid()" );
6639 const bool isSpherical =
6640 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
6642 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
6643 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
6647 // set _LayerEdge::_normal as average of all normals
6649 // WARNING: different density of nodes on EDGEs is not taken into account that
6650 // can lead to an improper new normal
6652 gp_XYZ avgNormal( 0,0,0 );
6654 id2eos = convFace._subIdToEOS.begin();
6655 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6657 _EdgesOnShape& eos = *(id2eos->second);
6658 // set data of _CentralCurveOnEdge
6659 if ( eos.ShapeType() == TopAbs_EDGE )
6661 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
6662 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
6663 if ( !eos._sWOL.IsNull() )
6664 ceCurve._adjFace.Nullify();
6666 ceCurve._ledges.insert( ceCurve._ledges.end(),
6667 eos._edges.begin(), eos._edges.end());
6669 // summarize normals
6670 for ( size_t i = 0; i < eos._edges.size(); ++i )
6671 avgNormal += eos._edges[ i ]->_normal;
6673 double normSize = avgNormal.SquareModulus();
6674 if ( normSize < 1e-200 )
6676 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
6679 avgNormal /= Sqrt( normSize );
6681 // compute new _LayerEdge::_cosin on EDGEs
6682 double avgCosin = 0;
6685 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6687 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
6688 if ( ceCurve._adjFace.IsNull() )
6690 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
6692 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
6693 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
6696 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
6697 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
6698 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
6704 avgCosin /= nbCosin;
6706 // set _LayerEdge::_normal = avgNormal
6707 id2eos = convFace._subIdToEOS.begin();
6708 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6710 _EdgesOnShape& eos = *(id2eos->second);
6711 if ( eos.ShapeType() != TopAbs_EDGE )
6712 for ( size_t i = 0; i < eos._edges.size(); ++i )
6713 eos._edges[ i ]->_cosin = avgCosin;
6715 for ( size_t i = 0; i < eos._edges.size(); ++i )
6717 eos._edges[ i ]->SetNormal( avgNormal );
6718 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
6722 else // if ( isSpherical )
6724 // We suppose that centers of curvature at all points of the FACE
6725 // lie on some curve, let's call it "central curve". For all _LayerEdge's
6726 // having a common center of curvature we define the same new normal
6727 // as a sum of normals of _LayerEdge's on EDGEs among them.
6729 // get all centers of curvature for each EDGE
6731 helper.SetSubShape( convFace._face );
6732 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
6734 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
6735 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
6737 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
6739 // set adjacent FACE
6740 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
6742 // get _LayerEdge's of the EDGE
6743 TGeomID edgeID = meshDS->ShapeToIndex( edge );
6744 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
6745 if ( !eos || eos->_edges.empty() )
6747 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
6748 for ( int iV = 0; iV < 2; ++iV )
6750 TopoDS_Vertex v = helper.IthVertex( iV, edge );
6751 TGeomID vID = meshDS->ShapeToIndex( v );
6752 eos = data.GetShapeEdges( vID );
6753 vertexLEdges[ iV ] = eos->_edges[ 0 ];
6755 edgeLEdge = &vertexLEdges[0];
6756 edgeLEdgeEnd = edgeLEdge + 2;
6758 centerCurves[ iE ]._adjFace.Nullify();
6762 if ( ! eos->_toSmooth )
6763 data.SortOnEdge( edge, eos->_edges );
6764 edgeLEdge = &eos->_edges[ 0 ];
6765 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
6766 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
6767 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
6769 if ( ! eos->_sWOL.IsNull() )
6770 centerCurves[ iE ]._adjFace.Nullify();
6773 // Get curvature centers
6777 if ( edgeLEdge[0]->IsOnEdge() &&
6778 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
6780 centerCurves[ iE ].Append( center, vertexLEdges[0] );
6781 centersBox.Add( center );
6783 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
6784 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
6785 { // EDGE or VERTEXes
6786 centerCurves[ iE ].Append( center, *edgeLEdge );
6787 centersBox.Add( center );
6789 if ( edgeLEdge[-1]->IsOnEdge() &&
6790 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
6792 centerCurves[ iE ].Append( center, vertexLEdges[1] );
6793 centersBox.Add( center );
6795 centerCurves[ iE ]._isDegenerated =
6796 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
6798 } // loop on EDGES of convFace._face to set up data of centerCurves
6800 // Compute new normals for _LayerEdge's on EDGEs
6802 double avgCosin = 0;
6805 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
6807 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
6808 if ( ceCurve._isDegenerated )
6810 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
6811 vector< gp_XYZ > & newNormals = ceCurve._normals;
6812 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
6815 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
6818 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
6820 if ( isOK && !ceCurve._adjFace.IsNull() )
6822 // compute new _LayerEdge::_cosin
6823 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
6824 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
6827 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
6828 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
6829 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
6835 // set new normals to _LayerEdge's of NOT degenerated central curves
6836 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6838 if ( centerCurves[ iE ]._isDegenerated )
6840 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
6842 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
6843 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
6846 // set new normals to _LayerEdge's of degenerated central curves
6847 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6849 if ( !centerCurves[ iE ]._isDegenerated ||
6850 centerCurves[ iE ]._ledges.size() < 3 )
6852 // new normal is an average of new normals at VERTEXes that
6853 // was computed on non-degenerated _CentralCurveOnEdge's
6854 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
6855 centerCurves[ iE ]._ledges.back ()->_normal );
6856 double sz = newNorm.Modulus();
6860 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
6861 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
6862 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
6864 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
6865 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
6866 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
6870 // Find new normals for _LayerEdge's based on FACE
6873 avgCosin /= nbCosin;
6874 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
6875 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
6876 if ( id2eos != convFace._subIdToEOS.end() )
6880 _EdgesOnShape& eos = * ( id2eos->second );
6881 for ( size_t i = 0; i < eos._edges.size(); ++i )
6883 _LayerEdge* ledge = eos._edges[ i ];
6884 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
6886 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
6888 iE = iE % centerCurves.size();
6889 if ( centerCurves[ iE ]._isDegenerated )
6891 newNorm.SetCoord( 0,0,0 );
6892 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
6894 ledge->SetNormal( newNorm );
6895 ledge->_cosin = avgCosin;
6896 ledge->Set( _LayerEdge::NORMAL_UPDATED );
6903 } // not a quasi-spherical FACE
6905 // Update _LayerEdge's data according to a new normal
6907 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
6908 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
6910 id2eos = convFace._subIdToEOS.begin();
6911 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6913 _EdgesOnShape& eos = * ( id2eos->second );
6914 for ( size_t i = 0; i < eos._edges.size(); ++i )
6916 _LayerEdge* & ledge = eos._edges[ i ];
6917 double len = ledge->_len;
6918 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
6919 ledge->SetCosin( ledge->_cosin );
6920 ledge->SetNewLength( len, eos, helper );
6922 if ( eos.ShapeType() != TopAbs_FACE )
6923 for ( size_t i = 0; i < eos._edges.size(); ++i )
6925 _LayerEdge* ledge = eos._edges[ i ];
6926 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
6928 _LayerEdge* neibor = ledge->_neibors[iN];
6929 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
6931 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
6932 neibor->Set( _LayerEdge::MOVED );
6933 neibor->SetSmooLen( neibor->_len );
6937 } // loop on sub-shapes of convFace._face
6939 // Find FACEs adjacent to convFace._face that got necessity to smooth
6940 // as a result of normals modification
6942 set< _EdgesOnShape* > adjFacesToSmooth;
6943 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6945 if ( centerCurves[ iE ]._adjFace.IsNull() ||
6946 centerCurves[ iE ]._adjFaceToSmooth )
6948 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
6950 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
6952 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
6957 data.AddShapesToSmooth( adjFacesToSmooth );
6962 } // loop on data._convexFaces
6967 //================================================================================
6969 * \brief Finds a center of curvature of a surface at a _LayerEdge
6971 //================================================================================
6973 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
6974 BRepLProp_SLProps& surfProp,
6975 SMESH_MesherHelper& helper,
6976 gp_Pnt & center ) const
6978 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
6979 surfProp.SetParameters( uv.X(), uv.Y() );
6980 if ( !surfProp.IsCurvatureDefined() )
6983 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
6984 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
6985 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
6986 if ( surfCurvatureMin > surfCurvatureMax )
6987 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
6989 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
6994 //================================================================================
6996 * \brief Check that prisms are not distorted
6998 //================================================================================
7000 bool _ConvexFace::CheckPrisms() const
7003 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
7005 const _LayerEdge* edge = _simplexTestEdges[i];
7006 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
7007 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
7008 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
7010 debugMsg( "Bad simplex of _simplexTestEdges ("
7011 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
7012 << " "<< edge->_simplices[j]._nPrev->GetID()
7013 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
7020 //================================================================================
7022 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
7023 * stored in this _CentralCurveOnEdge.
7024 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
7025 * \param [in,out] newNormal - current normal at this point, to be redefined
7026 * \return bool - true if succeeded.
7028 //================================================================================
7030 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
7032 if ( this->_isDegenerated )
7035 // find two centers the given one lies between
7037 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
7039 double sl2 = 1.001 * _segLength2[ i ];
7041 double d1 = center.SquareDistance( _curvaCenters[ i ]);
7045 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
7046 if ( d2 > sl2 || d2 + d1 < 1e-100 )
7051 double r = d1 / ( d1 + d2 );
7052 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
7053 ( r ) * _ledges[ i+1 ]->_normal );
7057 double sz = newNormal.Modulus();
7066 //================================================================================
7068 * \brief Set shape members
7070 //================================================================================
7072 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
7073 const _ConvexFace& convFace,
7075 SMESH_MesherHelper& helper)
7079 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
7080 while ( const TopoDS_Shape* F = fIt->next())
7081 if ( !convFace._face.IsSame( *F ))
7083 _adjFace = TopoDS::Face( *F );
7084 _adjFaceToSmooth = false;
7085 // _adjFace already in a smoothing queue ?
7086 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
7087 _adjFaceToSmooth = eos->_toSmooth;
7092 //================================================================================
7094 * \brief Looks for intersection of it's last segment with faces
7095 * \param distance - returns shortest distance from the last node to intersection
7097 //================================================================================
7099 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
7101 const double& epsilon,
7103 const SMDS_MeshElement** intFace)
7105 vector< const SMDS_MeshElement* > suspectFaces;
7107 gp_Ax1 lastSegment = LastSegment( segLen, eos );
7108 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
7110 bool segmentIntersected = false;
7111 distance = Precision::Infinite();
7112 int iFace = -1; // intersected face
7113 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
7115 const SMDS_MeshElement* face = suspectFaces[j];
7116 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
7117 face->GetNodeIndex( _nodes[0] ) >= 0 )
7118 continue; // face sharing _LayerEdge node
7119 const int nbNodes = face->NbCornerNodes();
7120 bool intFound = false;
7122 SMDS_MeshElement::iterator nIt = face->begin_nodes();
7125 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
7129 const SMDS_MeshNode* tria[3];
7132 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
7135 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
7141 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
7142 segmentIntersected = true;
7143 if ( distance > dist )
7144 distance = dist, iFace = j;
7147 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
7151 if ( segmentIntersected )
7154 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
7155 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
7156 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
7157 << ", intersection with face ("
7158 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
7159 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
7160 << ") distance = " << distance << endl;
7164 return segmentIntersected;
7167 //================================================================================
7169 * \brief Returns size and direction of the last segment
7171 //================================================================================
7173 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
7175 // find two non-coincident positions
7176 gp_XYZ orig = _pos.back();
7178 int iPrev = _pos.size() - 2;
7179 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
7180 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
7181 while ( iPrev >= 0 )
7183 vec = orig - _pos[iPrev];
7184 if ( vec.SquareModulus() > tol*tol )
7194 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
7195 segDir.SetDirection( _normal );
7200 gp_Pnt pPrev = _pos[ iPrev ];
7201 if ( !eos._sWOL.IsNull() )
7203 TopLoc_Location loc;
7204 if ( eos.SWOLType() == TopAbs_EDGE )
7207 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
7208 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
7212 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
7213 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
7215 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
7217 segDir.SetLocation( pPrev );
7218 segDir.SetDirection( vec );
7219 segLen = vec.Modulus();
7225 //================================================================================
7227 * \brief Return the last position of the target node on a FACE.
7228 * \param [in] F - the FACE this _LayerEdge is inflated along
7229 * \return gp_XY - result UV
7231 //================================================================================
7233 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos ) const
7235 if ( F.IsSame( eos._sWOL )) // F is my FACE
7236 return gp_XY( _pos.back().X(), _pos.back().Y() );
7238 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
7239 return gp_XY( 1e100, 1e100 );
7241 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
7242 double f, l, u = _pos.back().X();
7243 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
7244 if ( !C2d.IsNull() && f <= u && u <= l )
7245 return C2d->Value( u ).XY();
7247 return gp_XY( 1e100, 1e100 );
7250 //================================================================================
7252 * \brief Test intersection of the last segment with a given triangle
7253 * using Moller-Trumbore algorithm
7254 * Intersection is detected if distance to intersection is less than _LayerEdge._len
7256 //================================================================================
7258 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
7259 const gp_XYZ& vert0,
7260 const gp_XYZ& vert1,
7261 const gp_XYZ& vert2,
7263 const double& EPSILON) const
7265 const gp_Pnt& orig = lastSegment.Location();
7266 const gp_Dir& dir = lastSegment.Direction();
7268 /* calculate distance from vert0 to ray origin */
7269 gp_XYZ tvec = orig.XYZ() - vert0;
7271 //if ( tvec * dir > EPSILON )
7272 // intersected face is at back side of the temporary face this _LayerEdge belongs to
7275 gp_XYZ edge1 = vert1 - vert0;
7276 gp_XYZ edge2 = vert2 - vert0;
7278 /* begin calculating determinant - also used to calculate U parameter */
7279 gp_XYZ pvec = dir.XYZ() ^ edge2;
7281 /* if determinant is near zero, ray lies in plane of triangle */
7282 double det = edge1 * pvec;
7284 const double ANGL_EPSILON = 1e-12;
7285 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
7288 /* calculate U parameter and test bounds */
7289 double u = ( tvec * pvec ) / det;
7290 //if (u < 0.0 || u > 1.0)
7291 if ( u < -EPSILON || u > 1.0 + EPSILON )
7294 /* prepare to test V parameter */
7295 gp_XYZ qvec = tvec ^ edge1;
7297 /* calculate V parameter and test bounds */
7298 double v = (dir.XYZ() * qvec) / det;
7299 //if ( v < 0.0 || u + v > 1.0 )
7300 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
7303 /* calculate t, ray intersects triangle */
7304 t = (edge2 * qvec) / det;
7310 //================================================================================
7312 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
7313 * neighbor _LayerEdge's by it's own inflation vector.
7314 * \param [in] eov - EOS of the VERTEX
7315 * \param [in] eos - EOS of the FACE
7316 * \param [in] step - inflation step
7317 * \param [in,out] badSmooEdges - not untangled _LayerEdge's
7319 //================================================================================
7321 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
7322 const _EdgesOnShape* eos,
7324 vector< _LayerEdge* > & badSmooEdges )
7326 // check if any of _neibors is in badSmooEdges
7327 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
7328 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
7331 // get all edges to move
7333 set< _LayerEdge* > edges;
7335 // find a distance between _LayerEdge on VERTEX and its neighbors
7336 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
7338 for ( size_t i = 0; i < _neibors.size(); ++i )
7340 _LayerEdge* nEdge = _neibors[i];
7341 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
7343 edges.insert( nEdge );
7344 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
7347 // add _LayerEdge's close to curPosV
7351 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7353 _LayerEdge* edgeF = *e;
7354 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
7356 _LayerEdge* nEdge = edgeF->_neibors[i];
7357 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
7358 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
7359 edges.insert( nEdge );
7363 while ( nbE < edges.size() );
7365 // move the target node of the got edges
7367 gp_XYZ prevPosV = PrevPos();
7368 if ( eov->SWOLType() == TopAbs_EDGE )
7370 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
7371 prevPosV = curve.Value( prevPosV.X() ).XYZ();
7373 else if ( eov->SWOLType() == TopAbs_FACE )
7375 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
7376 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
7379 SMDS_FacePosition* fPos;
7380 //double r = 1. - Min( 0.9, step / 10. );
7381 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7383 _LayerEdge* edgeF = *e;
7384 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
7385 const gp_XYZ newPosF = curPosV + prevVF;
7386 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7387 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
7388 edgeF->_pos.back() = newPosF;
7389 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
7391 // set _curvature to make edgeF updated by putOnOffsetSurface()
7392 if ( !edgeF->_curvature )
7393 if (( fPos = dynamic_cast<SMDS_FacePosition*>( edgeF->_nodes[0]->GetPosition() )))
7395 edgeF->_curvature = new _Curvature;
7396 edgeF->_curvature->_r = 0;
7397 edgeF->_curvature->_k = 0;
7398 edgeF->_curvature->_h2lenRatio = 0;
7399 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
7402 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
7403 // SMESH_TNodeXYZ( _nodes[0] ));
7404 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7406 // _LayerEdge* edgeF = *e;
7407 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
7408 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7409 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7410 // edgeF->_pos.back() = newPosF;
7411 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
7414 // smooth _LayerEdge's around moved nodes
7415 //size_t nbBadBefore = badSmooEdges.size();
7416 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7418 _LayerEdge* edgeF = *e;
7419 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
7420 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
7421 //&& !edges.count( edgeF->_neibors[j] ))
7423 _LayerEdge* edgeFN = edgeF->_neibors[j];
7424 edgeFN->Unset( SMOOTHED );
7425 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
7428 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
7429 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
7430 // int nbBadAfter = edgeFN->_simplices.size();
7432 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
7434 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
7436 // if ( nbBadAfter <= nbBad )
7438 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
7439 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7440 // edgeF->_pos.back() = newPosF;
7441 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
7442 // nbBad = nbBadAfter;
7446 badSmooEdges.push_back( edgeFN );
7449 // move a bit not smoothed around moved nodes
7450 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
7452 // _LayerEdge* edgeF = badSmooEdges[i];
7453 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7454 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
7455 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
7456 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
7457 // edgeF->_pos.back() = newPosF;
7458 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
7462 //================================================================================
7464 * \brief Perform smooth of _LayerEdge's based on EDGE's
7465 * \retval bool - true if node has been moved
7467 //================================================================================
7469 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
7470 const TopoDS_Face& F,
7471 SMESH_MesherHelper& helper)
7473 ASSERT( IsOnEdge() );
7475 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
7476 SMESH_TNodeXYZ oldPos( tgtNode );
7477 double dist01, distNewOld;
7479 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
7480 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
7481 dist01 = p0.Distance( _2neibors->tgtNode(1) );
7483 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
7484 double lenDelta = 0;
7487 //lenDelta = _curvature->lenDelta( _len );
7488 lenDelta = _curvature->lenDeltaByDist( dist01 );
7489 newPos.ChangeCoord() += _normal * lenDelta;
7492 distNewOld = newPos.Distance( oldPos );
7496 if ( _2neibors->_plnNorm )
7498 // put newPos on the plane defined by source node and _plnNorm
7499 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
7500 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
7501 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
7503 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7504 _pos.back() = newPos.XYZ();
7508 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7509 gp_XY uv( Precision::Infinite(), 0 );
7510 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
7511 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
7513 newPos = surface->Value( uv );
7514 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7517 // commented for IPAL0052478
7518 // if ( _curvature && lenDelta < 0 )
7520 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
7521 // _len -= prevPos.Distance( oldPos );
7522 // _len += prevPos.Distance( newPos );
7524 bool moved = distNewOld > dist01/50;
7526 dumpMove( tgtNode ); // debug
7531 //================================================================================
7533 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
7535 //================================================================================
7537 void _LayerEdge::SmoothWoCheck()
7539 if ( Is( DIFFICULT ))
7542 bool moved = Is( SMOOTHED );
7543 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
7544 moved = _neibors[i]->Is( SMOOTHED );
7548 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7550 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7551 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7552 _pos.back() = newPos;
7554 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
7557 //================================================================================
7559 * \brief Checks validity of _neibors on EDGEs and VERTEXes
7561 //================================================================================
7563 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
7565 if ( ! Is( NEAR_BOUNDARY ))
7570 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
7572 _LayerEdge* eN = _neibors[iN];
7573 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
7576 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) || eN->Is( _LayerEdge::NORMAL_UPDATED ));
7578 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
7579 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
7580 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
7581 if ( eN->_nodes.size() > 1 &&
7582 eN->_simplices[i].Includes( _nodes.back() ) &&
7583 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
7588 badNeibors->push_back( eN );
7589 debugMsg("Bad boundary simplex ( "
7590 << " "<< eN->_nodes[0]->GetID()
7591 << " "<< eN->_nodes.back()->GetID()
7592 << " "<< eN->_simplices[i]._nPrev->GetID()
7593 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
7604 //================================================================================
7606 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
7607 * \retval int - nb of bad simplices around this _LayerEdge
7609 //================================================================================
7611 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
7613 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
7614 return 0; // shape of simplices not changed
7615 if ( _simplices.size() < 2 )
7616 return 0; // _LayerEdge inflated along EDGE or FACE
7618 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
7621 const gp_XYZ& curPos = _pos.back();
7622 const gp_XYZ& prevPos = PrevCheckPos();
7624 // quality metrics (orientation) of tetras around _tgtNode
7626 double vol, minVolBefore = 1e100;
7627 for ( size_t i = 0; i < _simplices.size(); ++i )
7629 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
7630 minVolBefore = Min( minVolBefore, vol );
7632 int nbBad = _simplices.size() - nbOkBefore;
7634 bool bndNeedSmooth = false;
7636 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
7640 // evaluate min angle
7641 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
7643 size_t nbGoodAngles = _simplices.size();
7645 for ( size_t i = 0; i < _simplices.size(); ++i )
7647 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
7650 if ( nbGoodAngles == _simplices.size() )
7656 if ( Is( ON_CONCAVE_FACE ))
7659 if ( step % 2 == 0 )
7662 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
7664 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
7665 _smooFunction = _funs[ FUN_CENTROIDAL ];
7667 _smooFunction = _funs[ FUN_LAPLACIAN ];
7670 // compute new position for the last _pos using different _funs
7673 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
7676 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7677 else if ( _funs[ iFun ] == _smooFunction )
7678 continue; // _smooFunction again
7679 else if ( step > 1 )
7680 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
7682 break; // let "easy" functions improve elements around distorted ones
7686 double delta = _curvature->lenDelta( _len );
7688 newPos += _normal * delta;
7691 double segLen = _normal * ( newPos - prevPos );
7692 if ( segLen + delta > 0 )
7693 newPos += _normal * delta;
7695 // double segLenChange = _normal * ( curPos - newPos );
7696 // newPos += 0.5 * _normal * segLenChange;
7700 double minVolAfter = 1e100;
7701 for ( size_t i = 0; i < _simplices.size(); ++i )
7703 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
7704 minVolAfter = Min( minVolAfter, vol );
7707 if ( nbOkAfter < nbOkBefore )
7711 ( nbOkAfter == nbOkBefore ) &&
7712 ( minVolAfter <= minVolBefore ))
7715 nbBad = _simplices.size() - nbOkAfter;
7716 minVolBefore = minVolAfter;
7717 nbOkBefore = nbOkAfter;
7720 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7721 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7722 _pos.back() = newPos;
7724 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
7725 << (nbBad ? " --BAD" : ""));
7729 continue; // look for a better function
7735 } // loop on smoothing functions
7737 if ( moved ) // notify _neibors
7740 for ( size_t i = 0; i < _neibors.size(); ++i )
7741 if ( !_neibors[i]->Is( MOVED ))
7743 _neibors[i]->Set( MOVED );
7744 toSmooth.push_back( _neibors[i] );
7751 //================================================================================
7753 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
7754 * \retval int - nb of bad simplices around this _LayerEdge
7756 //================================================================================
7758 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
7760 if ( !_smooFunction )
7761 return 0; // _LayerEdge inflated along EDGE or FACE
7763 return 0; // not inflated
7765 const gp_XYZ& curPos = _pos.back();
7766 const gp_XYZ& prevPos = PrevCheckPos();
7768 // quality metrics (orientation) of tetras around _tgtNode
7770 double vol, minVolBefore = 1e100;
7771 for ( size_t i = 0; i < _simplices.size(); ++i )
7773 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
7774 minVolBefore = Min( minVolBefore, vol );
7776 int nbBad = _simplices.size() - nbOkBefore;
7778 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
7780 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
7781 _smooFunction = _funs[ FUN_LAPLACIAN ];
7782 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
7783 _smooFunction = _funs[ FUN_CENTROIDAL ];
7786 // compute new position for the last _pos using different _funs
7788 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
7791 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7792 else if ( _funs[ iFun ] == _smooFunction )
7793 continue; // _smooFunction again
7794 else if ( step > 1 )
7795 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
7797 break; // let "easy" functions improve elements around distorted ones
7801 double delta = _curvature->lenDelta( _len );
7803 newPos += _normal * delta;
7806 double segLen = _normal * ( newPos - prevPos );
7807 if ( segLen + delta > 0 )
7808 newPos += _normal * delta;
7810 // double segLenChange = _normal * ( curPos - newPos );
7811 // newPos += 0.5 * _normal * segLenChange;
7815 double minVolAfter = 1e100;
7816 for ( size_t i = 0; i < _simplices.size(); ++i )
7818 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
7819 minVolAfter = Min( minVolAfter, vol );
7822 if ( nbOkAfter < nbOkBefore )
7824 if (( isConcaveFace || findBest ) &&
7825 ( nbOkAfter == nbOkBefore ) &&
7826 ( minVolAfter <= minVolBefore )
7830 nbBad = _simplices.size() - nbOkAfter;
7831 minVolBefore = minVolAfter;
7832 nbOkBefore = nbOkAfter;
7834 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7835 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7836 _pos.back() = newPos;
7838 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
7839 << ( nbBad ? "--BAD" : ""));
7841 // commented for IPAL0052478
7842 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
7843 // _len += prevPos.Distance(newPos);
7845 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
7847 //_smooFunction = _funs[ iFun ];
7848 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
7849 // << "\t nbBad: " << _simplices.size() - nbOkAfter
7850 // << " minVol: " << minVolAfter
7851 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
7853 continue; // look for a better function
7859 } // loop on smoothing functions
7864 //================================================================================
7866 * \brief Chooses a smoothing technic giving a position most close to an initial one.
7867 * For a correct result, _simplices must contain nodes lying on geometry.
7869 //================================================================================
7871 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
7872 const TNode2Edge& n2eMap)
7874 if ( _smooFunction ) return;
7876 // use smoothNefPolygon() near concaveVertices
7877 if ( !concaveVertices.empty() )
7879 _smooFunction = _funs[ FUN_CENTROIDAL ];
7881 Set( ON_CONCAVE_FACE );
7883 for ( size_t i = 0; i < _simplices.size(); ++i )
7885 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
7887 _smooFunction = _funs[ FUN_NEFPOLY ];
7889 // set FUN_CENTROIDAL to neighbor edges
7890 for ( i = 0; i < _neibors.size(); ++i )
7892 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
7894 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
7901 // // this coice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
7902 // // where the nodes are smoothed too far along a sphere thus creating
7903 // // inverted _simplices
7904 // double dist[theNbSmooFuns];
7905 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
7906 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
7908 // double minDist = Precision::Infinite();
7909 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
7910 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
7912 // gp_Pnt newP = (this->*_funs[i])();
7913 // dist[i] = p.SquareDistance( newP );
7914 // if ( dist[i]*coef[i] < minDist )
7916 // _smooFunction = _funs[i];
7917 // minDist = dist[i]*coef[i];
7923 _smooFunction = _funs[ FUN_LAPLACIAN ];
7926 // for ( size_t i = 0; i < _simplices.size(); ++i )
7927 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
7928 // if ( minDim == 0 )
7929 // _smooFunction = _funs[ FUN_CENTROIDAL ];
7930 // else if ( minDim == 1 )
7931 // _smooFunction = _funs[ FUN_CENTROIDAL ];
7935 // for ( int i = 0; i < FUN_NB; ++i )
7937 // //cout << dist[i] << " ";
7938 // if ( _smooFunction == _funs[i] ) {
7940 // //debugMsg( fNames[i] );
7944 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
7947 //================================================================================
7949 * \brief Returns a name of _SmooFunction
7951 //================================================================================
7953 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
7956 fun = _smooFunction;
7957 for ( int i = 0; i < theNbSmooFuns; ++i )
7958 if ( fun == _funs[i] )
7961 return theNbSmooFuns;
7964 //================================================================================
7966 * \brief Computes a new node position using Laplacian smoothing
7968 //================================================================================
7970 gp_XYZ _LayerEdge::smoothLaplacian()
7972 gp_XYZ newPos (0,0,0);
7973 for ( size_t i = 0; i < _simplices.size(); ++i )
7974 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
7975 newPos /= _simplices.size();
7980 //================================================================================
7982 * \brief Computes a new node position using angular-based smoothing
7984 //================================================================================
7986 gp_XYZ _LayerEdge::smoothAngular()
7988 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
7989 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
7990 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
7992 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
7994 for ( size_t i = 0; i < _simplices.size(); ++i )
7996 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
7997 edgeDir.push_back( p - pPrev );
7998 edgeSize.push_back( edgeDir.back().Magnitude() );
7999 if ( edgeSize.back() < numeric_limits<double>::min() )
8002 edgeSize.pop_back();
8006 edgeDir.back() /= edgeSize.back();
8007 points.push_back( p );
8012 edgeDir.push_back ( edgeDir[0] );
8013 edgeSize.push_back( edgeSize[0] );
8014 pN /= points.size();
8016 gp_XYZ newPos(0,0,0);
8018 for ( size_t i = 0; i < points.size(); ++i )
8020 gp_Vec toN = pN - points[i];
8021 double toNLen = toN.Magnitude();
8022 if ( toNLen < numeric_limits<double>::min() )
8027 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
8028 double bisecLen = bisec.SquareMagnitude();
8029 if ( bisecLen < numeric_limits<double>::min() )
8031 gp_Vec norm = edgeDir[i] ^ toN;
8032 bisec = norm ^ edgeDir[i];
8033 bisecLen = bisec.SquareMagnitude();
8035 bisecLen = Sqrt( bisecLen );
8039 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
8040 sumSize += bisecLen;
8042 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
8043 sumSize += ( edgeSize[i] + edgeSize[i+1] );
8049 // project newPos to an average plane
8051 gp_XYZ norm(0,0,0); // plane normal
8052 points.push_back( points[0] );
8053 for ( size_t i = 1; i < points.size(); ++i )
8055 gp_XYZ vec1 = points[ i-1 ] - pN;
8056 gp_XYZ vec2 = points[ i ] - pN;
8057 gp_XYZ cross = vec1 ^ vec2;
8060 if ( cross * norm < numeric_limits<double>::min() )
8061 norm += cross.Reversed();
8065 catch (Standard_Failure) { // if |cross| == 0.
8068 gp_XYZ vec = newPos - pN;
8069 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
8070 newPos = newPos - r * norm;
8075 //================================================================================
8077 * \brief Computes a new node position using weigthed node positions
8079 //================================================================================
8081 gp_XYZ _LayerEdge::smoothLengthWeighted()
8083 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
8084 vector< gp_XYZ > points; points. reserve( _simplices.size() );
8086 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
8087 for ( size_t i = 0; i < _simplices.size(); ++i )
8089 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
8090 edgeSize.push_back( ( p - pPrev ).Modulus() );
8091 if ( edgeSize.back() < numeric_limits<double>::min() )
8093 edgeSize.pop_back();
8097 points.push_back( p );
8101 edgeSize.push_back( edgeSize[0] );
8103 gp_XYZ newPos(0,0,0);
8105 for ( size_t i = 0; i < points.size(); ++i )
8107 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
8108 sumSize += edgeSize[i] + edgeSize[i+1];
8114 //================================================================================
8116 * \brief Computes a new node position using angular-based smoothing
8118 //================================================================================
8120 gp_XYZ _LayerEdge::smoothCentroidal()
8122 gp_XYZ newPos(0,0,0);
8123 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
8125 for ( size_t i = 0; i < _simplices.size(); ++i )
8127 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
8128 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
8129 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
8130 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
8133 newPos += gc * size;
8140 //================================================================================
8142 * \brief Computes a new node position located inside a Nef polygon
8144 //================================================================================
8146 gp_XYZ _LayerEdge::smoothNefPolygon()
8147 #ifdef OLD_NEF_POLYGON
8149 gp_XYZ newPos(0,0,0);
8151 // get a plane to seach a solution on
8153 vector< gp_XYZ > vecs( _simplices.size() + 1 );
8155 const double tol = numeric_limits<double>::min();
8156 gp_XYZ center(0,0,0);
8157 for ( i = 0; i < _simplices.size(); ++i )
8159 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
8160 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
8161 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
8163 vecs.back() = vecs[0];
8164 center /= _simplices.size();
8166 gp_XYZ zAxis(0,0,0);
8167 for ( i = 0; i < _simplices.size(); ++i )
8168 zAxis += vecs[i] ^ vecs[i+1];
8171 for ( i = 0; i < _simplices.size(); ++i )
8174 if ( yAxis.SquareModulus() > tol )
8177 gp_XYZ xAxis = yAxis ^ zAxis;
8178 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
8179 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
8180 // p0.Distance( _simplices[2]._nPrev ));
8181 // gp_XYZ center = smoothLaplacian();
8182 // gp_XYZ xAxis, yAxis, zAxis;
8183 // for ( i = 0; i < _simplices.size(); ++i )
8185 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8186 // if ( xAxis.SquareModulus() > tol*tol )
8189 // for ( i = 1; i < _simplices.size(); ++i )
8191 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8192 // zAxis = xAxis ^ yAxis;
8193 // if ( zAxis.SquareModulus() > tol*tol )
8196 // if ( i == _simplices.size() ) return newPos;
8198 yAxis = zAxis ^ xAxis;
8199 xAxis /= xAxis.Modulus();
8200 yAxis /= yAxis.Modulus();
8202 // get half-planes of _simplices
8204 vector< _halfPlane > halfPlns( _simplices.size() );
8206 for ( size_t i = 0; i < _simplices.size(); ++i )
8208 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8209 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
8210 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
8211 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
8212 gp_XY vec12 = p2 - p1;
8213 double dist12 = vec12.Modulus();
8217 halfPlns[ nbHP ]._pos = p1;
8218 halfPlns[ nbHP ]._dir = vec12;
8219 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
8223 // intersect boundaries of half-planes, define state of intersection points
8224 // in relation to all half-planes and calculate internal point of a 2D polygon
8227 gp_XY newPos2D (0,0);
8229 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
8230 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
8231 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
8233 vector< vector< TIntPntState > > allIntPnts( nbHP );
8234 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
8236 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
8237 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
8239 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
8240 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
8243 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
8245 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8247 if ( iHP1 == iHP2 ) continue;
8249 TIntPntState & ips1 = intPnts1[ iHP2 ];
8250 if ( ips1.second == UNDEF )
8252 // find an intersection point of boundaries of iHP1 and iHP2
8254 if ( iHP2 == iPrev ) // intersection with neighbors is known
8255 ips1.first = halfPlns[ iHP1 ]._pos;
8256 else if ( iHP2 == iNext )
8257 ips1.first = halfPlns[ iHP2 ]._pos;
8258 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
8259 ips1.second = NO_INT;
8261 // classify the found intersection point
8262 if ( ips1.second != NO_INT )
8264 ips1.second = NOT_OUT;
8265 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
8266 if ( i != iHP1 && i != iHP2 &&
8267 halfPlns[ i ].IsOut( ips1.first, tol ))
8268 ips1.second = IS_OUT;
8270 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
8271 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
8272 TIntPntState & ips2 = intPnts2[ iHP1 ];
8275 if ( ips1.second == NOT_OUT )
8278 segEnds[ bool(segEnds[0]) ] = & ips1.first;
8282 // find a NOT_OUT segment of boundary which is located between
8283 // two NOT_OUT int points
8286 continue; // no such a segment
8290 // sort points along the boundary
8291 map< double, TIntPntState* > ipsByParam;
8292 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8294 TIntPntState & ips1 = intPnts1[ iHP2 ];
8295 if ( ips1.second != NO_INT )
8297 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
8298 double param = op * halfPlns[ iHP1 ]._dir;
8299 ipsByParam.insert( make_pair( param, & ips1 ));
8302 // look for two neighboring NOT_OUT points
8304 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
8305 for ( ; u2ips != ipsByParam.end(); ++u2ips )
8307 TIntPntState & ips1 = *(u2ips->second);
8308 if ( ips1.second == NOT_OUT )
8309 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
8310 else if ( nbNotOut >= 2 )
8317 if ( nbNotOut >= 2 )
8319 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
8322 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
8329 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
8338 #else // OLD_NEF_POLYGON
8339 { ////////////////////////////////// NEW
8340 gp_XYZ newPos(0,0,0);
8342 // get a plane to seach a solution on
8345 gp_XYZ center(0,0,0);
8346 for ( i = 0; i < _simplices.size(); ++i )
8347 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
8348 center /= _simplices.size();
8350 vector< gp_XYZ > vecs( _simplices.size() + 1 );
8351 for ( i = 0; i < _simplices.size(); ++i )
8352 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8353 vecs.back() = vecs[0];
8355 const double tol = numeric_limits<double>::min();
8356 gp_XYZ zAxis(0,0,0);
8357 for ( i = 0; i < _simplices.size(); ++i )
8359 gp_XYZ cross = vecs[i] ^ vecs[i+1];
8362 if ( cross * zAxis < tol )
8363 zAxis += cross.Reversed();
8367 catch (Standard_Failure) { // if |cross| == 0.
8372 for ( i = 0; i < _simplices.size(); ++i )
8375 if ( yAxis.SquareModulus() > tol )
8378 gp_XYZ xAxis = yAxis ^ zAxis;
8379 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
8380 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
8381 // p0.Distance( _simplices[2]._nPrev ));
8382 // gp_XYZ center = smoothLaplacian();
8383 // gp_XYZ xAxis, yAxis, zAxis;
8384 // for ( i = 0; i < _simplices.size(); ++i )
8386 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8387 // if ( xAxis.SquareModulus() > tol*tol )
8390 // for ( i = 1; i < _simplices.size(); ++i )
8392 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8393 // zAxis = xAxis ^ yAxis;
8394 // if ( zAxis.SquareModulus() > tol*tol )
8397 // if ( i == _simplices.size() ) return newPos;
8399 yAxis = zAxis ^ xAxis;
8400 xAxis /= xAxis.Modulus();
8401 yAxis /= yAxis.Modulus();
8403 // get half-planes of _simplices
8405 vector< _halfPlane > halfPlns( _simplices.size() );
8407 for ( size_t i = 0; i < _simplices.size(); ++i )
8409 const gp_XYZ& OP1 = vecs[ i ];
8410 const gp_XYZ& OP2 = vecs[ i+1 ];
8411 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
8412 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
8413 gp_XY vec12 = p2 - p1;
8414 double dist12 = vec12.Modulus();
8418 halfPlns[ nbHP ]._pos = p1;
8419 halfPlns[ nbHP ]._dir = vec12;
8420 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
8424 // intersect boundaries of half-planes, define state of intersection points
8425 // in relation to all half-planes and calculate internal point of a 2D polygon
8428 gp_XY newPos2D (0,0);
8430 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
8431 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
8432 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
8434 vector< vector< TIntPntState > > allIntPnts( nbHP );
8435 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
8437 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
8438 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
8440 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
8441 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
8444 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
8446 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8448 if ( iHP1 == iHP2 ) continue;
8450 TIntPntState & ips1 = intPnts1[ iHP2 ];
8451 if ( ips1.second == UNDEF )
8453 // find an intersection point of boundaries of iHP1 and iHP2
8455 if ( iHP2 == iPrev ) // intersection with neighbors is known
8456 ips1.first = halfPlns[ iHP1 ]._pos;
8457 else if ( iHP2 == iNext )
8458 ips1.first = halfPlns[ iHP2 ]._pos;
8459 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
8460 ips1.second = NO_INT;
8462 // classify the found intersection point
8463 if ( ips1.second != NO_INT )
8465 ips1.second = NOT_OUT;
8466 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
8467 if ( i != iHP1 && i != iHP2 &&
8468 halfPlns[ i ].IsOut( ips1.first, tol ))
8469 ips1.second = IS_OUT;
8471 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
8472 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
8473 TIntPntState & ips2 = intPnts2[ iHP1 ];
8476 if ( ips1.second == NOT_OUT )
8479 segEnds[ bool(segEnds[0]) ] = & ips1.first;
8483 // find a NOT_OUT segment of boundary which is located between
8484 // two NOT_OUT int points
8487 continue; // no such a segment
8491 // sort points along the boundary
8492 map< double, TIntPntState* > ipsByParam;
8493 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8495 TIntPntState & ips1 = intPnts1[ iHP2 ];
8496 if ( ips1.second != NO_INT )
8498 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
8499 double param = op * halfPlns[ iHP1 ]._dir;
8500 ipsByParam.insert( make_pair( param, & ips1 ));
8503 // look for two neighboring NOT_OUT points
8505 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
8506 for ( ; u2ips != ipsByParam.end(); ++u2ips )
8508 TIntPntState & ips1 = *(u2ips->second);
8509 if ( ips1.second == NOT_OUT )
8510 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
8511 else if ( nbNotOut >= 2 )
8518 if ( nbNotOut >= 2 )
8520 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
8523 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
8530 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
8539 #endif // OLD_NEF_POLYGON
8541 //================================================================================
8543 * \brief Add a new segment to _LayerEdge during inflation
8545 //================================================================================
8547 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
8552 if ( len > _maxLen )
8555 Block( eos.GetData() );
8557 const double lenDelta = len - _len;
8558 if ( lenDelta < len * 1e-3 )
8560 Block( eos.GetData() );
8564 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
8565 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
8567 if ( eos._hyp.IsOffsetMethod() )
8571 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
8572 while ( faceIt->more() )
8574 const SMDS_MeshElement* face = faceIt->next();
8575 if ( !eos.GetNormal( face, faceNorm ))
8578 // translate plane of a face
8579 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
8581 // find point of intersection of the face plane located at baryCenter
8582 // and _normal located at newXYZ
8583 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
8584 double dot = ( faceNorm.XYZ() * _normal );
8585 if ( dot < std::numeric_limits<double>::min() )
8586 dot = lenDelta * 1e-3;
8587 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
8588 newXYZ += step * _normal;
8593 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
8596 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
8597 _pos.push_back( newXYZ );
8599 if ( !eos._sWOL.IsNull() )
8603 if ( eos.SWOLType() == TopAbs_EDGE )
8605 double u = Precision::Infinite(); // to force projection w/o distance check
8606 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u,
8607 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
8608 _pos.back().SetCoord( u, 0, 0 );
8609 if ( _nodes.size() > 1 && uvOK )
8611 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( n->GetPosition() );
8612 pos->SetUParameter( u );
8617 gp_XY uv( Precision::Infinite(), 0 );
8618 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv,
8619 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
8620 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8621 if ( _nodes.size() > 1 && uvOK )
8623 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( n->GetPosition() );
8624 pos->SetUParameter( uv.X() );
8625 pos->SetVParameter( uv.Y() );
8630 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
8634 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
8636 Block( eos.GetData() );
8644 if ( eos.ShapeType() != TopAbs_FACE )
8646 for ( size_t i = 0; i < _neibors.size(); ++i )
8647 //if ( _len > _neibors[i]->GetSmooLen() )
8648 _neibors[i]->Set( MOVED );
8652 dumpMove( n ); //debug
8655 //================================================================================
8657 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
8659 //================================================================================
8661 void _LayerEdge::Block( _SolidData& data )
8663 if ( Is( BLOCKED )) return;
8667 std::queue<_LayerEdge*> queue;
8670 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
8671 while ( !queue.empty() )
8673 _LayerEdge* edge = queue.front(); queue.pop();
8674 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
8675 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
8676 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
8678 _LayerEdge* neibor = edge->_neibors[iN];
8679 if ( neibor->Is( BLOCKED ) ||
8680 neibor->_maxLen < edge->_maxLen )
8682 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
8683 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
8684 double minDist = pSrc.SquareDistance( pSrcN );
8685 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
8686 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
8687 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
8688 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
8689 if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() )
8691 newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
8693 if ( neibor->_maxLen > newMaxLen )
8695 neibor->_maxLen = newMaxLen;
8696 if ( neibor->_maxLen < neibor->_len )
8698 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
8699 while ( neibor->_len > neibor->_maxLen &&
8700 neibor->NbSteps() > 1 )
8701 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
8702 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
8704 queue.push( neibor );
8710 //================================================================================
8712 * \brief Remove last inflation step
8714 //================================================================================
8716 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
8718 if ( _pos.size() > curStep && _nodes.size() > 1 )
8720 _pos.resize( curStep );
8722 gp_Pnt nXYZ = _pos.back();
8723 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
8724 SMESH_TNodeXYZ curXYZ( n );
8725 if ( !eos._sWOL.IsNull() )
8727 TopLoc_Location loc;
8728 if ( eos.SWOLType() == TopAbs_EDGE )
8730 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( n->GetPosition() );
8731 pos->SetUParameter( nXYZ.X() );
8733 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8734 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
8738 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( n->GetPosition() );
8739 pos->SetUParameter( nXYZ.X() );
8740 pos->SetVParameter( nXYZ.Y() );
8741 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
8742 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
8745 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
8748 if ( restoreLength )
8750 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
8755 //================================================================================
8757 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
8759 //================================================================================
8761 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
8764 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
8767 // find the 1st smoothed _pos
8769 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
8771 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
8772 if ( normDist > tol * tol )
8775 if ( !iSmoothed ) return;
8777 if ( 1 || Is( DISTORTED ))
8779 // if ( segLen[ iSmoothed ] / segLen.back() < 0.5 )
8781 gp_XYZ normal = _normal;
8782 if ( Is( NORMAL_UPDATED ))
8783 for ( size_t i = 1; i < _pos.size(); ++i )
8785 normal = _pos[i] - _pos[0];
8786 double size = normal.Modulus();
8787 if ( size > RealSmall() )
8793 const double r = 0.2;
8794 for ( int iter = 0; iter < 3; ++iter )
8797 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
8799 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
8800 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
8802 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
8803 double newLen = ( 1-r ) * midLen + r * segLen[i];
8804 const_cast< double& >( segLen[i] ) = newLen;
8805 // check angle between normal and (_pos[i+1], _pos[i] )
8806 gp_XYZ posDir = _pos[i+1] - _pos[i];
8807 double size = posDir.Modulus();
8808 if ( size > RealSmall() )
8809 minDot = Min( minDot, ( normal * posDir ) / size );
8817 // for ( size_t i = 1; i < _pos.size()-1; ++i )
8819 // if ((int) i < iSmoothed && ( segLen[i] / segLen.back() < 0.5 ))
8822 // double wgt = segLen[i] / segLen.back();
8823 // gp_XYZ normPos = _pos[0] + _normal * wgt * _len;
8824 // gp_XYZ tgtPos = ( 1 - wgt ) * _pos[0] + wgt * _pos.back();
8825 // gp_XYZ newPos = ( 1 - wgt ) * normPos + wgt * tgtPos;
8826 // _pos[i] = newPos;
8831 //================================================================================
8833 * \brief Create layers of prisms
8835 //================================================================================
8837 bool _ViscousBuilder::refine(_SolidData& data)
8839 SMESH_MesherHelper& helper = data.GetHelper();
8840 helper.SetElementsOnShape(false);
8842 Handle(Geom_Curve) curve;
8843 Handle(ShapeAnalysis_Surface) surface;
8844 TopoDS_Edge geomEdge;
8845 TopoDS_Face geomFace;
8846 TopLoc_Location loc;
8849 vector< gp_XYZ > pos3D;
8851 TGeomID prevBaseId = -1;
8852 TNode2Edge* n2eMap = 0;
8853 TNode2Edge::iterator n2e;
8855 // Create intermediate nodes on each _LayerEdge
8857 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
8859 _EdgesOnShape& eos = data._edgesOnShape[iS];
8860 if ( eos._edges.empty() ) continue;
8862 if ( eos._edges[0]->_nodes.size() < 2 )
8863 continue; // on _noShrinkShapes
8865 // get data of a shrink shape
8867 geomEdge.Nullify(); geomFace.Nullify();
8868 curve.Nullify(); surface.Nullify();
8869 if ( !eos._sWOL.IsNull() )
8871 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
8874 geomEdge = TopoDS::Edge( eos._sWOL );
8875 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
8879 geomFace = TopoDS::Face( eos._sWOL );
8880 surface = helper.GetSurface( geomFace );
8883 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
8885 geomFace = TopoDS::Face( eos._shape );
8886 surface = helper.GetSurface( geomFace );
8887 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
8888 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
8890 eos._eosC1[ i ]->_toSmooth = true;
8891 for ( size_t j = 0; j < eos._eosC1[i]->_edges.size(); ++j )
8892 eos._eosC1[i]->_edges[j]->Set( _LayerEdge::SMOOTHED_C1 );
8896 vector< double > segLen;
8897 for ( size_t i = 0; i < eos._edges.size(); ++i )
8899 _LayerEdge& edge = *eos._edges[i];
8900 if ( edge._pos.size() < 2 )
8903 // get accumulated length of segments
8904 segLen.resize( edge._pos.size() );
8906 if ( eos._sWOL.IsNull() )
8908 bool useNormal = true;
8909 bool usePos = false;
8910 bool smoothed = false;
8911 const double preci = 0.1 * edge._len;
8912 if ( eos._toSmooth )
8914 gp_Pnt tgtExpected = edge._pos[0] + edge._normal * edge._len;
8915 smoothed = tgtExpected.SquareDistance( edge._pos.back() ) > preci * preci;
8919 if ( !surface.IsNull() &&
8920 !data._convexFaces.count( eos._shapeID )) // edge smoothed on FACE
8922 useNormal = usePos = false;
8923 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
8924 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
8926 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
8927 if ( surface->Gap() < 2. * edge._len )
8928 segLen[j] = surface->Gap();
8936 useNormal = usePos = false;
8937 edge._pos[1] = edge._pos.back();
8938 edge._pos.resize( 2 );
8940 segLen[ 1 ] = edge._len;
8942 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
8944 useNormal = usePos = false;
8945 _LayerEdge tmpEdge; // get original _normal
8946 tmpEdge._nodes.push_back( edge._nodes[0] );
8947 if ( !setEdgeData( tmpEdge, eos, helper, data ))
8950 for ( size_t j = 1; j < edge._pos.size(); ++j )
8951 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
8955 for ( size_t j = 1; j < edge._pos.size(); ++j )
8956 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
8960 for ( size_t j = 1; j < edge._pos.size(); ++j )
8961 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
8965 bool swapped = ( edge._pos.size() > 2 );
8969 for ( size_t j = 1; j < edge._pos.size(); ++j )
8970 if ( segLen[j] > segLen.back() )
8972 segLen.erase( segLen.begin() + j );
8973 edge._pos.erase( edge._pos.begin() + j );
8975 else if ( segLen[j] < segLen[j-1] )
8977 std::swap( segLen[j], segLen[j-1] );
8978 std::swap( edge._pos[j], edge._pos[j-1] );
8983 // smooth a path formed by edge._pos
8984 if (( smoothed ) /*&&
8985 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
8986 edge.SmoothPos( segLen, preci );
8988 else if ( eos._isRegularSWOL ) // usual SWOL
8990 for ( size_t j = 1; j < edge._pos.size(); ++j )
8991 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
8993 else if ( !surface.IsNull() ) // SWOL surface with singularities
8995 pos3D.resize( edge._pos.size() );
8996 for ( size_t j = 0; j < edge._pos.size(); ++j )
8997 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
8999 for ( size_t j = 1; j < edge._pos.size(); ++j )
9000 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
9003 // allocate memory for new nodes if it is not yet refined
9004 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9005 if ( edge._nodes.size() == 2 )
9007 edge._nodes.resize( eos._hyp.GetNumberLayers() + 1, 0 );
9009 edge._nodes.back() = tgtNode;
9011 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
9012 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
9013 if ( baseShapeId != prevBaseId )
9015 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
9016 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
9017 prevBaseId = baseShapeId;
9019 _LayerEdge* edgeOnSameNode = 0;
9020 bool useExistingPos = false;
9021 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
9023 edgeOnSameNode = n2e->second;
9024 useExistingPos = ( edgeOnSameNode->_len < edge._len );
9025 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
9026 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
9029 SMDS_EdgePosition* epos = static_cast<SMDS_EdgePosition*>( lastPos );
9030 epos->SetUParameter( otherTgtPos.X() );
9034 SMDS_FacePosition* fpos = static_cast<SMDS_FacePosition*>( lastPos );
9035 fpos->SetUParameter( otherTgtPos.X() );
9036 fpos->SetVParameter( otherTgtPos.Y() );
9039 // calculate height of the first layer
9041 const double T = segLen.back(); //data._hyp.GetTotalThickness();
9042 const double f = eos._hyp.GetStretchFactor();
9043 const int N = eos._hyp.GetNumberLayers();
9044 const double fPowN = pow( f, N );
9045 if ( fPowN - 1 <= numeric_limits<double>::min() )
9048 h0 = T * ( f - 1 )/( fPowN - 1 );
9050 const double zeroLen = std::numeric_limits<double>::min();
9052 // create intermediate nodes
9053 double hSum = 0, hi = h0/f;
9055 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
9057 // compute an intermediate position
9060 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
9062 int iPrevSeg = iSeg-1;
9063 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
9065 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
9066 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
9068 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
9069 if ( !eos._sWOL.IsNull() )
9071 // compute XYZ by parameters <pos>
9076 pos = curve->Value( u ).Transformed(loc);
9078 else if ( eos._isRegularSWOL )
9080 uv.SetCoord( pos.X(), pos.Y() );
9082 pos = surface->Value( pos.X(), pos.Y() );
9086 uv.SetCoord( pos.X(), pos.Y() );
9087 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
9088 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
9090 pos = surface->Value( uv );
9093 // create or update the node
9096 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
9097 if ( !eos._sWOL.IsNull() )
9100 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
9102 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
9106 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
9111 if ( !eos._sWOL.IsNull() )
9113 // make average pos from new and current parameters
9116 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
9117 if ( useExistingPos )
9118 u = helper.GetNodeU( geomEdge, node );
9119 pos = curve->Value( u ).Transformed(loc);
9121 SMDS_EdgePosition* epos = static_cast<SMDS_EdgePosition*>( node->GetPosition() );
9122 epos->SetUParameter( u );
9126 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
9127 if ( useExistingPos )
9128 uv = helper.GetNodeUV( geomFace, node );
9129 pos = surface->Value( uv );
9131 SMDS_FacePosition* fpos = static_cast<SMDS_FacePosition*>( node->GetPosition() );
9132 fpos->SetUParameter( uv.X() );
9133 fpos->SetVParameter( uv.Y() );
9136 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
9138 } // loop on edge._nodes
9140 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
9143 edge._pos.back().SetCoord( u, 0,0);
9145 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
9147 if ( edgeOnSameNode )
9148 edgeOnSameNode->_pos.back() = edge._pos.back();
9151 } // loop on eos._edges to create nodes
9154 if ( !getMeshDS()->IsEmbeddedMode() )
9155 // Log node movement
9156 for ( size_t i = 0; i < eos._edges.size(); ++i )
9158 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
9159 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
9166 helper.SetElementsOnShape(true);
9168 vector< vector<const SMDS_MeshNode*>* > nnVec;
9169 set< vector<const SMDS_MeshNode*>* > nnSet;
9170 set< int > degenEdgeInd;
9171 vector<const SMDS_MeshElement*> degenVols;
9172 vector<int> isRiskySWOL;
9174 TopExp_Explorer exp( data._solid, TopAbs_FACE );
9175 for ( ; exp.More(); exp.Next() )
9177 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
9178 if ( data._ignoreFaceIds.count( faceID ))
9180 const bool isReversedFace = data._reversedFaceIds.count( faceID );
9181 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
9182 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
9183 while ( fIt->more() )
9185 const SMDS_MeshElement* face = fIt->next();
9186 const int nbNodes = face->NbCornerNodes();
9187 nnVec.resize( nbNodes );
9189 degenEdgeInd.clear();
9190 isRiskySWOL.resize( nbNodes );
9191 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
9192 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
9193 for ( int iN = 0; iN < nbNodes; ++iN )
9195 const SMDS_MeshNode* n = nIt->next();
9196 _LayerEdge* edge = data._n2eMap[ n ];
9197 const int i = isReversedFace ? nbNodes-1-iN : iN;
9198 nnVec[ i ] = & edge->_nodes;
9199 maxZ = std::max( maxZ, nnVec[ i ]->size() );
9200 minZ = std::min( minZ, nnVec[ i ]->size() );
9201 //isRiskySWOL[ i ] = edge->Is( _LayerEdge::RISKY_SWOL );
9203 if ( helper.HasDegeneratedEdges() )
9204 nnSet.insert( nnVec[ i ]);
9209 if ( 0 < nnSet.size() && nnSet.size() < 3 )
9217 for ( size_t iZ = 1; iZ < minZ; ++iZ )
9218 helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
9219 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
9221 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
9223 for ( int iN = 0; iN < nbNodes; ++iN )
9224 if ( nnVec[ iN ]->size() < iZ+1 )
9225 degenEdgeInd.insert( iN );
9227 if ( degenEdgeInd.size() == 1 ) // PYRAM
9229 int i2 = *degenEdgeInd.begin();
9230 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
9231 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
9232 helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
9233 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
9237 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
9238 helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
9239 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
9240 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
9241 (*nnVec[ i3 ])[ iZ ]);
9249 for ( size_t iZ = 1; iZ < minZ; ++iZ )
9250 helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
9251 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
9252 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
9253 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
9255 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
9257 for ( int iN = 0; iN < nbNodes; ++iN )
9258 if ( nnVec[ iN ]->size() < iZ+1 )
9259 degenEdgeInd.insert( iN );
9261 switch ( degenEdgeInd.size() )
9265 int i2 = *degenEdgeInd.begin();
9266 int i3 = *degenEdgeInd.rbegin();
9267 bool ok = ( i3 - i2 == 1 );
9268 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
9269 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
9270 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
9272 const SMDS_MeshElement* vol =
9273 helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
9274 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
9276 degenVols.push_back( vol );
9280 default: // degen HEX
9282 const SMDS_MeshElement* vol =
9283 helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
9284 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
9285 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
9286 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
9287 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
9288 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
9289 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
9290 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
9291 degenVols.push_back( vol );
9298 return error("Not supported type of element", data._index);
9300 } // switch ( nbNodes )
9301 } // while ( fIt->more() )
9304 if ( !degenVols.empty() )
9306 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
9307 if ( !err || err->IsOK() )
9309 err.reset( new SMESH_ComputeError( COMPERR_WARNING,
9310 "Degenerated volumes created" ));
9311 err->myBadElements.insert( err->myBadElements.end(),
9312 degenVols.begin(),degenVols.end() );
9319 //================================================================================
9321 * \brief Shrink 2D mesh on faces to let space for inflated layers
9323 //================================================================================
9325 bool _ViscousBuilder::shrink()
9327 // make map of (ids of FACEs to shrink mesh on) to (_SolidData containing _LayerEdge's
9328 // inflated along FACE or EDGE)
9329 map< TGeomID, _SolidData* > f2sdMap;
9330 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9332 _SolidData& data = _sdVec[i];
9333 TopTools_MapOfShape FFMap;
9334 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
9335 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
9336 if ( s2s->second.ShapeType() == TopAbs_FACE )
9338 f2sdMap.insert( make_pair( getMeshDS()->ShapeToIndex( s2s->second ), &data ));
9340 if ( FFMap.Add( (*s2s).second ))
9341 // Put mesh faces on the shrinked FACE to the proxy sub-mesh to avoid
9342 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
9343 // by StdMeshers_QuadToTriaAdaptor
9344 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
9346 SMESH_ProxyMesh::SubMesh* proxySub =
9347 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
9348 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9349 while ( fIt->more() )
9350 proxySub->AddElement( fIt->next() );
9351 // as a result 3D algo will use elements from proxySub and not from smDS
9356 SMESH_MesherHelper helper( *_mesh );
9357 helper.ToFixNodeParameters( true );
9360 map< TGeomID, _Shrinker1D > e2shrMap;
9361 vector< _EdgesOnShape* > subEOS;
9362 vector< _LayerEdge* > lEdges;
9364 // loop on FACES to srink mesh on
9365 map< TGeomID, _SolidData* >::iterator f2sd = f2sdMap.begin();
9366 for ( ; f2sd != f2sdMap.end(); ++f2sd )
9368 _SolidData& data = *f2sd->second;
9369 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
9370 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
9371 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
9373 Handle(Geom_Surface) surface = BRep_Tool::Surface(F);
9375 helper.SetSubShape(F);
9377 // ===========================
9378 // Prepare data for shrinking
9379 // ===========================
9381 // Collect nodes to smooth, as src nodes are not yet replaced by tgt ones
9382 // and hence all nodes on a FACE connected to 2d elements are to be smoothed
9383 vector < const SMDS_MeshNode* > smoothNodes;
9385 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
9386 while ( nIt->more() )
9388 const SMDS_MeshNode* n = nIt->next();
9389 if ( n->NbInverseElements( SMDSAbs_Face ) > 0 )
9390 smoothNodes.push_back( n );
9393 // Find out face orientation
9395 const set<TGeomID> ignoreShapes;
9397 if ( !smoothNodes.empty() )
9399 vector<_Simplex> simplices;
9400 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
9401 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of silpmex nodes
9402 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
9403 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
9404 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper,refSign) )
9408 // Find _LayerEdge's inflated along F
9412 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
9413 /*complexFirst=*/true); //!!!
9414 while ( subIt->more() )
9416 const TGeomID subID = subIt->next()->GetId();
9417 if ( data._noShrinkShapes.count( subID ))
9419 _EdgesOnShape* eos = data.GetShapeEdges( subID );
9420 if ( !eos || eos->_sWOL.IsNull() ) continue;
9422 subEOS.push_back( eos );
9424 for ( size_t i = 0; i < eos->_edges.size(); ++i )
9426 lEdges.push_back( eos->_edges[ i ] );
9427 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
9432 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
9433 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9434 while ( fIt->more() )
9435 if ( const SMDS_MeshElement* f = fIt->next() )
9436 dumpChangeNodes( f );
9439 // Replace source nodes by target nodes in mesh faces to shrink
9440 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
9441 const SMDS_MeshNode* nodes[20];
9442 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9444 _EdgesOnShape& eos = * subEOS[ iS ];
9445 for ( size_t i = 0; i < eos._edges.size(); ++i )
9447 _LayerEdge& edge = *eos._edges[i];
9448 const SMDS_MeshNode* srcNode = edge._nodes[0];
9449 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9450 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
9451 while ( fIt->more() )
9453 const SMDS_MeshElement* f = fIt->next();
9454 if ( !smDS->Contains( f ))
9456 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
9457 for ( int iN = 0; nIt->more(); ++iN )
9459 const SMDS_MeshNode* n = nIt->next();
9460 nodes[iN] = ( n == srcNode ? tgtNode : n );
9462 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
9463 dumpChangeNodes( f );
9469 // find out if a FACE is concave
9470 const bool isConcaveFace = isConcave( F, helper );
9472 // Create _SmoothNode's on face F
9473 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
9475 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
9476 const bool sortSimplices = isConcaveFace;
9477 for ( size_t i = 0; i < smoothNodes.size(); ++i )
9479 const SMDS_MeshNode* n = smoothNodes[i];
9480 nodesToSmooth[ i ]._node = n;
9481 // src nodes must be replaced by tgt nodes to have tgt nodes in _simplices
9482 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
9483 // fix up incorrect uv of nodes on the FACE
9484 helper.GetNodeUV( F, n, 0, &isOkUV);
9489 //if ( nodesToSmooth.empty() ) continue;
9491 // Find EDGE's to shrink and set simpices to LayerEdge's
9492 set< _Shrinker1D* > eShri1D;
9494 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9496 _EdgesOnShape& eos = * subEOS[ iS ];
9497 if ( eos.SWOLType() == TopAbs_EDGE )
9499 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
9500 _Shrinker1D& srinker = e2shrMap[ edgeSM->GetId() ];
9501 eShri1D.insert( & srinker );
9502 srinker.AddEdge( eos._edges[0], eos, helper );
9503 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
9504 // restore params of nodes on EGDE if the EDGE has been already
9505 // srinked while srinking other FACE
9506 srinker.RestoreParams();
9508 for ( size_t i = 0; i < eos._edges.size(); ++i )
9510 _LayerEdge& edge = * eos._edges[i];
9511 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
9516 bool toFixTria = false; // to improve quality of trias by diagonal swap
9517 if ( isConcaveFace )
9519 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
9520 if ( hasTria != hasQuad ) {
9521 toFixTria = hasTria;
9524 set<int> nbNodesSet;
9525 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9526 while ( fIt->more() && nbNodesSet.size() < 2 )
9527 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
9528 toFixTria = ( *nbNodesSet.begin() == 3 );
9532 // ==================
9533 // Perform shrinking
9534 // ==================
9536 bool shrinked = true;
9537 int nbBad, shriStep=0, smooStep=0;
9538 _SmoothNode::SmoothType smoothType
9539 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
9540 SMESH_Comment errMsg;
9544 // Move boundary nodes (actually just set new UV)
9545 // -----------------------------------------------
9546 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
9548 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9550 _EdgesOnShape& eos = * subEOS[ iS ];
9551 for ( size_t i = 0; i < eos._edges.size(); ++i )
9553 shrinked |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
9558 // Move nodes on EDGE's
9559 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
9560 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
9561 for ( ; shr != eShri1D.end(); ++shr )
9562 (*shr)->Compute( /*set3D=*/false, helper );
9565 // -----------------
9566 int nbNoImpSteps = 0;
9569 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
9571 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9573 int oldBadNb = nbBad;
9576 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
9577 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
9578 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9580 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
9581 smooTy, /*set3D=*/isConcaveFace);
9583 if ( nbBad < oldBadNb )
9593 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
9594 if ( shriStep > 200 )
9595 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
9596 if ( !errMsg.empty() )
9599 // Fix narrow triangles by swapping diagonals
9600 // ---------------------------------------
9603 set<const SMDS_MeshNode*> usedNodes;
9604 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
9606 // update working data
9607 set<const SMDS_MeshNode*>::iterator n;
9608 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
9610 n = usedNodes.find( nodesToSmooth[ i ]._node );
9611 if ( n != usedNodes.end())
9613 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
9614 nodesToSmooth[ i ]._simplices,
9616 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
9617 usedNodes.erase( n );
9620 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
9622 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
9623 if ( n != usedNodes.end())
9625 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
9626 lEdges[i]->_simplices,
9628 usedNodes.erase( n );
9632 // TODO: check effect of this additional smooth
9633 // additional laplacian smooth to increase allowed shrink step
9634 // for ( int st = 1; st; --st )
9636 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9637 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9639 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
9640 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
9644 } // while ( shrinked )
9646 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
9649 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
9651 vector< const SMDS_MeshElement* > facesToRm;
9654 facesToRm.reserve( psm->NbElements() );
9655 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
9656 facesToRm.push_back( ite->next() );
9658 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9659 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
9662 for ( size_t i = 0; i < facesToRm.size(); ++i )
9663 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
9667 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
9668 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
9669 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
9670 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
9671 subEOS[iS]->_edges[i]->_nodes.end() );
9673 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
9674 while ( itn->more() ) {
9675 const SMDS_MeshNode* n = itn->next();
9676 if ( !nodesToKeep.count( n ))
9677 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
9680 // restore position and UV of target nodes
9682 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9683 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
9685 _LayerEdge* edge = subEOS[iS]->_edges[i];
9686 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
9687 if ( edge->_pos.empty() ) continue;
9688 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
9690 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
9691 pos->SetUParameter( edge->_pos[0].X() );
9692 pos->SetVParameter( edge->_pos[0].Y() );
9693 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
9697 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
9698 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
9699 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
9701 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
9702 dumpMove( tgtNode );
9704 // shrink EDGE sub-meshes and set proxy sub-meshes
9705 UVPtStructVec uvPtVec;
9706 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
9707 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
9709 _Shrinker1D* shr = (*shrIt);
9710 shr->Compute( /*set3D=*/true, helper );
9712 // set proxy mesh of EDGEs w/o layers
9713 map< double, const SMDS_MeshNode* > nodes;
9714 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
9715 // remove refinement nodes
9716 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
9717 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
9718 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
9719 if ( u2n->second == sn0 || u2n->second == sn1 )
9721 while ( u2n->second != tn0 && u2n->second != tn1 )
9723 nodes.erase( nodes.begin(), u2n );
9725 u2n = --nodes.end();
9726 if ( u2n->second == sn0 || u2n->second == sn1 )
9728 while ( u2n->second != tn0 && u2n->second != tn1 )
9730 nodes.erase( ++u2n, nodes.end() );
9732 // set proxy sub-mesh
9733 uvPtVec.resize( nodes.size() );
9734 u2n = nodes.begin();
9735 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
9736 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
9738 uvPtVec[ i ].node = u2n->second;
9739 uvPtVec[ i ].param = u2n->first;
9740 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
9742 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
9743 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
9746 // set proxy mesh of EDGEs with layers
9747 vector< _LayerEdge* > edges;
9748 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9750 _EdgesOnShape& eos = * subEOS[ iS ];
9751 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
9753 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
9754 data.SortOnEdge( E, eos._edges );
9757 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
9758 if ( !eov->_edges.empty() )
9759 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
9761 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
9763 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
9764 if ( !eov->_edges.empty() )
9765 edges.push_back( eov->_edges[0] ); // on last VERTEX
9767 uvPtVec.resize( edges.size() );
9768 for ( size_t i = 0; i < edges.size(); ++i )
9770 uvPtVec[ i ].node = edges[i]->_nodes.back();
9771 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
9772 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
9774 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
9775 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
9776 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
9778 // temporary clear the FACE sub-mesh from faces made by refine()
9779 vector< const SMDS_MeshElement* > elems;
9780 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
9781 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
9782 elems.push_back( ite->next() );
9783 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
9784 elems.push_back( ite->next() );
9787 // compute the mesh on the FACE
9788 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
9789 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
9791 // re-fill proxy sub-meshes of the FACE
9792 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9793 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
9794 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
9795 psm->AddElement( ite->next() );
9798 for ( size_t i = 0; i < elems.size(); ++i )
9799 smDS->AddElement( elems[i] );
9801 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
9802 return error( errMsg );
9804 } // end of re-meshing in case of failed smoothing
9807 // No wrongly shaped faces remain; final smooth. Set node XYZ.
9808 bool isStructuredFixed = false;
9809 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
9810 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
9811 if ( !isStructuredFixed )
9813 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
9814 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
9816 for ( int st = 3; st; --st )
9819 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
9820 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
9821 case 3: smoothType = _SmoothNode::ANGULAR; break;
9823 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9824 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9826 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
9827 smoothType,/*set3D=*/st==1 );
9832 if ( !getMeshDS()->IsEmbeddedMode() )
9833 // Log node movement
9834 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9836 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
9837 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
9841 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
9842 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
9844 } // loop on FACES to srink mesh on
9847 // Replace source nodes by target nodes in shrinked mesh edges
9849 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
9850 for ( ; e2shr != e2shrMap.end(); ++e2shr )
9851 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
9856 //================================================================================
9858 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
9860 //================================================================================
9862 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
9864 SMESH_MesherHelper& helper,
9865 const SMESHDS_SubMesh* faceSubMesh)
9867 const SMDS_MeshNode* srcNode = edge._nodes[0];
9868 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9870 if ( eos.SWOLType() == TopAbs_FACE )
9872 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
9875 return srcNode == tgtNode;
9877 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
9878 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
9879 gp_Vec2d uvDir( srcUV, tgtUV );
9880 double uvLen = uvDir.Magnitude();
9882 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
9885 edge._pos.resize(1);
9886 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
9888 // set UV of source node to target node
9889 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
9890 pos->SetUParameter( srcUV.X() );
9891 pos->SetVParameter( srcUV.Y() );
9893 else // _sWOL is TopAbs_EDGE
9895 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
9898 return srcNode == tgtNode;
9900 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
9901 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
9902 if ( !edgeSM || edgeSM->NbElements() == 0 )
9903 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
9905 const SMDS_MeshNode* n2 = 0;
9906 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
9907 while ( eIt->more() && !n2 )
9909 const SMDS_MeshElement* e = eIt->next();
9910 if ( !edgeSM->Contains(e)) continue;
9911 n2 = e->GetNode( 0 );
9912 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
9915 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
9917 double uSrc = helper.GetNodeU( E, srcNode, n2 );
9918 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
9919 double u2 = helper.GetNodeU( E, n2, srcNode );
9923 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
9925 // tgtNode is located so that it does not make faces with wrong orientation
9928 edge._pos.resize(1);
9929 edge._pos[0].SetCoord( U_TGT, uTgt );
9930 edge._pos[0].SetCoord( U_SRC, uSrc );
9931 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
9933 edge._simplices.resize( 1 );
9934 edge._simplices[0]._nPrev = n2;
9936 // set U of source node to the target node
9937 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
9938 pos->SetUParameter( uSrc );
9943 //================================================================================
9945 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
9947 //================================================================================
9949 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
9951 if ( edge._nodes.size() == 1 )
9956 const SMDS_MeshNode* srcNode = edge._nodes[0];
9957 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
9958 if ( S.IsNull() ) return;
9962 switch ( S.ShapeType() )
9967 TopLoc_Location loc;
9968 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
9969 if ( curve.IsNull() ) return;
9970 SMDS_EdgePosition* ePos = static_cast<SMDS_EdgePosition*>( srcNode->GetPosition() );
9971 p = curve->Value( ePos->GetUParameter() );
9976 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
9981 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
9982 dumpMove( srcNode );
9986 //================================================================================
9988 * \brief Try to fix triangles with high aspect ratio by swaping diagonals
9990 //================================================================================
9992 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
9993 SMESH_MesherHelper& helper,
9996 set<const SMDS_MeshNode*> * involvedNodes)
9998 SMESH::Controls::AspectRatio qualifier;
9999 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
10000 const double maxAspectRatio = is2D ? 4. : 2;
10001 _NodeCoordHelper xyz( F, helper, is2D );
10003 // find bad triangles
10005 vector< const SMDS_MeshElement* > badTrias;
10006 vector< double > badAspects;
10007 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
10008 SMDS_ElemIteratorPtr fIt = sm->GetElements();
10009 while ( fIt->more() )
10011 const SMDS_MeshElement * f = fIt->next();
10012 if ( f->NbCornerNodes() != 3 ) continue;
10013 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
10014 double aspect = qualifier.GetValue( points );
10015 if ( aspect > maxAspectRatio )
10017 badTrias.push_back( f );
10018 badAspects.push_back( aspect );
10023 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
10024 SMDS_ElemIteratorPtr fIt = sm->GetElements();
10025 while ( fIt->more() )
10027 const SMDS_MeshElement * f = fIt->next();
10028 if ( f->NbCornerNodes() == 3 )
10029 dumpChangeNodes( f );
10033 if ( badTrias.empty() )
10036 // find couples of faces to swap diagonal
10038 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
10039 vector< T2Trias > triaCouples;
10041 TIDSortedElemSet involvedFaces, emptySet;
10042 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
10045 double aspRatio [3];
10048 if ( !involvedFaces.insert( badTrias[iTia] ).second )
10050 for ( int iP = 0; iP < 3; ++iP )
10051 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
10053 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
10054 int bestCouple = -1;
10055 for ( int iSide = 0; iSide < 3; ++iSide )
10057 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
10058 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
10059 trias [iSide].first = badTrias[iTia];
10060 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
10062 if (( ! trias[iSide].second ) ||
10063 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
10064 ( ! sm->Contains( trias[iSide].second )))
10067 // aspect ratio of an adjacent tria
10068 for ( int iP = 0; iP < 3; ++iP )
10069 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
10070 double aspectInit = qualifier.GetValue( points2 );
10072 // arrange nodes as after diag-swaping
10073 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
10074 i3 = helper.WrapIndex( i1-1, 3 );
10076 i3 = helper.WrapIndex( i1+1, 3 );
10078 points1( 1+ iSide ) = points2( 1+ i3 );
10079 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
10081 // aspect ratio after diag-swaping
10082 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
10083 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
10086 // prevent inversion of a triangle
10087 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
10088 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
10089 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
10092 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
10093 bestCouple = iSide;
10096 if ( bestCouple >= 0 )
10098 triaCouples.push_back( trias[bestCouple] );
10099 involvedFaces.insert ( trias[bestCouple].second );
10103 involvedFaces.erase( badTrias[iTia] );
10106 if ( triaCouples.empty() )
10111 SMESH_MeshEditor editor( helper.GetMesh() );
10112 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
10113 for ( size_t i = 0; i < triaCouples.size(); ++i )
10115 dumpChangeNodes( triaCouples[i].first );
10116 dumpChangeNodes( triaCouples[i].second );
10117 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
10120 if ( involvedNodes )
10121 for ( size_t i = 0; i < triaCouples.size(); ++i )
10123 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
10124 triaCouples[i].first->end_nodes() );
10125 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
10126 triaCouples[i].second->end_nodes() );
10129 // just for debug dump resulting triangles
10130 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
10131 for ( size_t i = 0; i < triaCouples.size(); ++i )
10133 dumpChangeNodes( triaCouples[i].first );
10134 dumpChangeNodes( triaCouples[i].second );
10138 //================================================================================
10140 * \brief Move target node to it's final position on the FACE during shrinking
10142 //================================================================================
10144 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
10145 const TopoDS_Face& F,
10146 _EdgesOnShape& eos,
10147 SMESH_MesherHelper& helper )
10149 if ( _pos.empty() )
10150 return false; // already at the target position
10152 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
10154 if ( eos.SWOLType() == TopAbs_FACE )
10156 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
10157 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
10158 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
10159 const double uvLen = tgtUV.Distance( curUV );
10160 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
10162 // Select shrinking step such that not to make faces with wrong orientation.
10163 double stepSize = 1e100;
10164 for ( size_t i = 0; i < _simplices.size(); ++i )
10166 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
10167 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev );
10168 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext );
10169 gp_XY dirN = uvN2 - uvN1;
10170 double det = uvDir.Crossed( dirN );
10171 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
10172 gp_XY dirN2Cur = curUV - uvN1;
10173 double step = dirN.Crossed( dirN2Cur ) / det;
10175 stepSize = Min( step, stepSize );
10178 if ( uvLen <= stepSize )
10183 else if ( stepSize > 0 )
10185 newUV = curUV + uvDir.XY() * stepSize * kSafe;
10191 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
10192 pos->SetUParameter( newUV.X() );
10193 pos->SetVParameter( newUV.Y() );
10196 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
10197 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
10198 dumpMove( tgtNode );
10201 else // _sWOL is TopAbs_EDGE
10203 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
10204 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
10205 SMDS_EdgePosition* tgtPos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
10207 const double u2 = helper.GetNodeU( E, n2, tgtNode );
10208 const double uSrc = _pos[0].Coord( U_SRC );
10209 const double lenTgt = _pos[0].Coord( LEN_TGT );
10211 double newU = _pos[0].Coord( U_TGT );
10212 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
10218 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
10220 tgtPos->SetUParameter( newU );
10222 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
10223 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
10224 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
10225 dumpMove( tgtNode );
10232 //================================================================================
10234 * \brief Perform smooth on the FACE
10235 * \retval bool - true if the node has been moved
10237 //================================================================================
10239 bool _SmoothNode::Smooth(int& nbBad,
10240 Handle(Geom_Surface)& surface,
10241 SMESH_MesherHelper& helper,
10242 const double refSign,
10246 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
10248 // get uv of surrounding nodes
10249 vector<gp_XY> uv( _simplices.size() );
10250 for ( size_t i = 0; i < _simplices.size(); ++i )
10251 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
10253 // compute new UV for the node
10254 gp_XY newPos (0,0);
10255 if ( how == TFI && _simplices.size() == 4 )
10258 for ( size_t i = 0; i < _simplices.size(); ++i )
10259 if ( _simplices[i]._nOpp )
10260 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
10262 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
10264 newPos = helper.calcTFI ( 0.5, 0.5,
10265 corners[0], corners[1], corners[2], corners[3],
10266 uv[1], uv[2], uv[3], uv[0] );
10268 else if ( how == ANGULAR )
10270 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
10272 else if ( how == CENTROIDAL && _simplices.size() > 3 )
10274 // average centers of diagonals wieghted with their reciprocal lengths
10275 if ( _simplices.size() == 4 )
10277 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
10278 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
10279 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
10283 double sumWeight = 0;
10284 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
10285 for ( int i = 0; i < nb; ++i )
10288 int iTo = i + _simplices.size() - 1;
10289 for ( int j = iFrom; j < iTo; ++j )
10291 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
10292 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
10294 newPos += w * ( uv[i]+uv[i2] );
10297 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
10302 // Laplacian smooth
10303 for ( size_t i = 0; i < _simplices.size(); ++i )
10305 newPos /= _simplices.size();
10308 // count quality metrics (orientation) of triangles around the node
10309 int nbOkBefore = 0;
10310 gp_XY tgtUV = helper.GetNodeUV( face, _node );
10311 for ( size_t i = 0; i < _simplices.size(); ++i )
10312 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
10315 for ( size_t i = 0; i < _simplices.size(); ++i )
10316 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
10318 if ( nbOkAfter < nbOkBefore )
10320 nbBad += _simplices.size() - nbOkBefore;
10324 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( _node->GetPosition() );
10325 pos->SetUParameter( newPos.X() );
10326 pos->SetVParameter( newPos.Y() );
10333 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
10334 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
10338 nbBad += _simplices.size() - nbOkAfter;
10339 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
10342 //================================================================================
10344 * \brief Computes new UV using angle based smoothing technic
10346 //================================================================================
10348 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
10349 const gp_XY& uvToFix,
10350 const double refSign)
10352 uv.push_back( uv.front() );
10354 vector< gp_XY > edgeDir ( uv.size() );
10355 vector< double > edgeSize( uv.size() );
10356 for ( size_t i = 1; i < edgeDir.size(); ++i )
10358 edgeDir [i-1] = uv[i] - uv[i-1];
10359 edgeSize[i-1] = edgeDir[i-1].Modulus();
10360 if ( edgeSize[i-1] < numeric_limits<double>::min() )
10361 edgeDir[i-1].SetX( 100 );
10363 edgeDir[i-1] /= edgeSize[i-1] * refSign;
10365 edgeDir.back() = edgeDir.front();
10366 edgeSize.back() = edgeSize.front();
10370 double sumSize = 0;
10371 for ( size_t i = 1; i < edgeDir.size(); ++i )
10373 if ( edgeDir[i-1].X() > 1. ) continue;
10375 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
10376 if ( i == edgeDir.size() ) break;
10378 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
10379 gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
10380 gp_XY bisec = norm1 + norm2;
10381 double bisecSize = bisec.Modulus();
10382 if ( bisecSize < numeric_limits<double>::min() )
10384 bisec = -edgeDir[i1] + edgeDir[i];
10385 bisecSize = bisec.Modulus();
10387 bisec /= bisecSize;
10389 gp_XY dirToN = uvToFix - p;
10390 double distToN = dirToN.Modulus();
10391 if ( bisec * dirToN < 0 )
10392 distToN = -distToN;
10394 newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
10396 sumSize += edgeSize[i1] + edgeSize[i];
10398 newPos /= /*nbEdges * */sumSize;
10402 //================================================================================
10404 * \brief Delete _SolidData
10406 //================================================================================
10408 _SolidData::~_SolidData()
10410 TNode2Edge::iterator n2e = _n2eMap.begin();
10411 for ( ; n2e != _n2eMap.end(); ++n2e )
10413 _LayerEdge* & e = n2e->second;
10416 delete e->_curvature;
10417 if ( e->_2neibors )
10418 delete e->_2neibors->_plnNorm;
10419 delete e->_2neibors;
10430 //================================================================================
10432 * \brief Keep a _LayerEdge inflated along the EDGE
10434 //================================================================================
10436 void _Shrinker1D::AddEdge( const _LayerEdge* e,
10437 _EdgesOnShape& eos,
10438 SMESH_MesherHelper& helper )
10441 if ( _nodes.empty() )
10443 _edges[0] = _edges[1] = 0;
10446 // check _LayerEdge
10447 if ( e == _edges[0] || e == _edges[1] )
10449 if ( eos.SWOLType() != TopAbs_EDGE )
10450 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
10451 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
10452 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
10454 // store _LayerEdge
10455 _geomEdge = TopoDS::Edge( eos._sWOL );
10457 BRep_Tool::Range( _geomEdge, f,l );
10458 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
10459 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
10463 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
10464 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
10466 if ( _nodes.empty() )
10468 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
10469 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
10471 TopLoc_Location loc;
10472 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
10473 GeomAdaptor_Curve aCurve(C, f,l);
10474 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
10476 int nbExpectNodes = eSubMesh->NbNodes();
10477 _initU .reserve( nbExpectNodes );
10478 _normPar.reserve( nbExpectNodes );
10479 _nodes .reserve( nbExpectNodes );
10480 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
10481 while ( nIt->more() )
10483 const SMDS_MeshNode* node = nIt->next();
10484 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
10485 node == tgtNode0 || node == tgtNode1 )
10486 continue; // refinement nodes
10487 _nodes.push_back( node );
10488 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
10489 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
10490 _normPar.push_back( len / totLen );
10495 // remove target node of the _LayerEdge from _nodes
10496 size_t nbFound = 0;
10497 for ( size_t i = 0; i < _nodes.size(); ++i )
10498 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
10499 _nodes[i] = 0, nbFound++;
10500 if ( nbFound == _nodes.size() )
10505 //================================================================================
10507 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
10509 //================================================================================
10511 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
10513 if ( _done || _nodes.empty())
10515 const _LayerEdge* e = _edges[0];
10516 if ( !e ) e = _edges[1];
10519 _done = (( !_edges[0] || _edges[0]->_pos.empty() ) &&
10520 ( !_edges[1] || _edges[1]->_pos.empty() ));
10523 if ( set3D || _done )
10525 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
10526 GeomAdaptor_Curve aCurve(C, f,l);
10529 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
10531 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
10532 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
10534 for ( size_t i = 0; i < _nodes.size(); ++i )
10536 if ( !_nodes[i] ) continue;
10537 double len = totLen * _normPar[i];
10538 GCPnts_AbscissaPoint discret( aCurve, len, f );
10539 if ( !discret.IsDone() )
10540 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
10541 double u = discret.Parameter();
10542 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10543 pos->SetUParameter( u );
10544 gp_Pnt p = C->Value( u );
10545 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
10550 BRep_Tool::Range( _geomEdge, f,l );
10552 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
10554 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
10556 for ( size_t i = 0; i < _nodes.size(); ++i )
10558 if ( !_nodes[i] ) continue;
10559 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
10560 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10561 pos->SetUParameter( u );
10566 //================================================================================
10568 * \brief Restore initial parameters of nodes on EDGE
10570 //================================================================================
10572 void _Shrinker1D::RestoreParams()
10575 for ( size_t i = 0; i < _nodes.size(); ++i )
10577 if ( !_nodes[i] ) continue;
10578 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10579 pos->SetUParameter( _initU[i] );
10584 //================================================================================
10586 * \brief Replace source nodes by target nodes in shrinked mesh edges
10588 //================================================================================
10590 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
10592 const SMDS_MeshNode* nodes[3];
10593 for ( int i = 0; i < 2; ++i )
10595 if ( !_edges[i] ) continue;
10597 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
10598 if ( !eSubMesh ) return;
10599 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
10600 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
10601 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
10602 while ( eIt->more() )
10604 const SMDS_MeshElement* e = eIt->next();
10605 if ( !eSubMesh->Contains( e ))
10607 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
10608 for ( int iN = 0; iN < e->NbNodes(); ++iN )
10610 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
10611 nodes[iN] = ( n == srcNode ? tgtNode : n );
10613 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
10618 //================================================================================
10620 * \brief Creates 2D and 1D elements on boundaries of new prisms
10622 //================================================================================
10624 bool _ViscousBuilder::addBoundaryElements()
10626 SMESH_MesherHelper helper( *_mesh );
10628 vector< const SMDS_MeshNode* > faceNodes;
10630 for ( size_t i = 0; i < _sdVec.size(); ++i )
10632 _SolidData& data = _sdVec[i];
10633 TopTools_IndexedMapOfShape geomEdges;
10634 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
10635 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
10637 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
10638 if ( data._noShrinkShapes.count( getMeshDS()->ShapeToIndex( E )))
10641 // Get _LayerEdge's based on E
10643 map< double, const SMDS_MeshNode* > u2nodes;
10644 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
10647 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
10648 TNode2Edge & n2eMap = data._n2eMap;
10649 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
10651 //check if 2D elements are needed on E
10652 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
10653 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
10654 ledges.push_back( n2e->second );
10656 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
10657 continue; // no layers on E
10658 ledges.push_back( n2eMap[ u2n->second ]);
10660 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
10661 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
10662 int nbSharedPyram = 0;
10663 SMDS_ElemIteratorPtr vIt = tgtN0->GetInverseElementIterator(SMDSAbs_Volume);
10664 while ( vIt->more() )
10666 const SMDS_MeshElement* v = vIt->next();
10667 nbSharedPyram += int( v->GetNodeIndex( tgtN1 ) >= 0 );
10669 if ( nbSharedPyram > 1 )
10670 continue; // not free border of the pyramid
10673 faceNodes.push_back( ledges[0]->_nodes[0] );
10674 faceNodes.push_back( ledges[1]->_nodes[0] );
10675 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
10676 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
10678 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
10679 continue; // faces already created
10681 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
10682 ledges.push_back( n2eMap[ u2n->second ]);
10684 // Find out orientation and type of face to create
10686 bool reverse = false, isOnFace;
10688 map< TGeomID, TopoDS_Shape >::iterator e2f =
10689 data._shrinkShape2Shape.find( getMeshDS()->ShapeToIndex( E ));
10691 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
10693 F = e2f->second.Oriented( TopAbs_FORWARD );
10694 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
10695 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
10696 reverse = !reverse, F.Reverse();
10697 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
10698 reverse = !reverse;
10702 // find FACE with layers sharing E
10703 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE );
10704 while ( fIt->more() && F.IsNull() )
10706 const TopoDS_Shape* pF = fIt->next();
10707 if ( helper.IsSubShape( *pF, data._solid) &&
10708 !data._ignoreFaceIds.count( e2f->first ))
10712 // Find the sub-mesh to add new faces
10713 SMESHDS_SubMesh* sm = 0;
10715 sm = getMeshDS()->MeshElements( F );
10717 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
10719 return error("error in addBoundaryElements()", data._index);
10722 const int dj1 = reverse ? 0 : 1;
10723 const int dj2 = reverse ? 1 : 0;
10724 for ( size_t j = 1; j < ledges.size(); ++j )
10726 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
10727 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
10728 if ( nn1.size() == nn2.size() )
10731 for ( size_t z = 1; z < nn1.size(); ++z )
10732 sm->AddElement( getMeshDS()->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
10734 for ( size_t z = 1; z < nn1.size(); ++z )
10735 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
10737 else if ( nn1.size() == 1 )
10740 for ( size_t z = 1; z < nn2.size(); ++z )
10741 sm->AddElement( getMeshDS()->AddFace( nn1[0], nn2[z-1], nn2[z] ));
10743 for ( size_t z = 1; z < nn2.size(); ++z )
10744 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
10749 for ( size_t z = 1; z < nn1.size(); ++z )
10750 sm->AddElement( getMeshDS()->AddFace( nn1[z-1], nn2[0], nn1[z] ));
10752 for ( size_t z = 1; z < nn1.size(); ++z )
10753 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
10758 for ( int isFirst = 0; isFirst < 2; ++isFirst )
10760 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
10761 _EdgesOnShape* eos = data.GetShapeEdges( edge );
10762 if ( eos && eos->SWOLType() == TopAbs_EDGE )
10764 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
10765 if ( nn.size() < 2 || nn[1]->GetInverseElementIterator( SMDSAbs_Edge )->more() )
10767 helper.SetSubShape( eos->_sWOL );
10768 helper.SetElementsOnShape( true );
10769 for ( size_t z = 1; z < nn.size(); ++z )
10770 helper.AddEdge( nn[z-1], nn[z] );
10774 } // loop on EDGE's
10775 } // loop on _SolidData's