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 "SMESHDS_Mesh.hxx"
34 #include "SMESH_Algo.hxx"
35 #include "SMESH_ComputeError.hxx"
36 #include "SMESH_ControlsDef.hxx"
37 #include "SMESH_Gen.hxx"
38 #include "SMESH_Group.hxx"
39 #include "SMESH_HypoFilter.hxx"
40 #include "SMESH_Mesh.hxx"
41 #include "SMESH_MeshAlgos.hxx"
42 #include "SMESH_MesherHelper.hxx"
43 #include "SMESH_ProxyMesh.hxx"
44 #include "SMESH_subMesh.hxx"
45 #include "SMESH_subMeshEventListener.hxx"
46 #include "StdMeshers_FaceSide.hxx"
47 #include "StdMeshers_ViscousLayers2D.hxx"
49 #include <Adaptor3d_HSurface.hxx>
50 #include <BRepAdaptor_Curve.hxx>
51 #include <BRepAdaptor_Curve2d.hxx>
52 #include <BRepAdaptor_Surface.hxx>
53 //#include <BRepLProp_CLProps.hxx>
54 #include <BRepLProp_SLProps.hxx>
55 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
56 #include <BRep_Tool.hxx>
57 #include <Bnd_B2d.hxx>
58 #include <Bnd_B3d.hxx>
60 #include <GCPnts_AbscissaPoint.hxx>
61 #include <GCPnts_TangentialDeflection.hxx>
62 #include <Geom2d_Circle.hxx>
63 #include <Geom2d_Line.hxx>
64 #include <Geom2d_TrimmedCurve.hxx>
65 #include <GeomAdaptor_Curve.hxx>
66 #include <GeomLib.hxx>
67 #include <Geom_Circle.hxx>
68 #include <Geom_Curve.hxx>
69 #include <Geom_Line.hxx>
70 #include <Geom_TrimmedCurve.hxx>
71 #include <Precision.hxx>
72 #include <Standard_ErrorHandler.hxx>
73 #include <Standard_Failure.hxx>
74 #include <TColStd_Array1OfReal.hxx>
76 #include <TopExp_Explorer.hxx>
77 #include <TopTools_IndexedMapOfShape.hxx>
78 #include <TopTools_ListOfShape.hxx>
79 #include <TopTools_MapIteratorOfMapOfShape.hxx>
80 #include <TopTools_MapOfShape.hxx>
82 #include <TopoDS_Edge.hxx>
83 #include <TopoDS_Face.hxx>
84 #include <TopoDS_Vertex.hxx>
86 #include <gp_Cone.hxx>
87 #include <gp_Sphere.hxx>
99 //#define __NOT_INVALIDATE_BAD_SMOOTH
102 #define INCREMENTAL_SMOOTH // smooth only if min angle is too small
103 #define BLOCK_INFLATION // of individual _LayerEdge's
104 #define OLD_NEF_POLYGON
108 //================================================================================
113 enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
115 const double theMinSmoothCosin = 0.1;
116 const double theSmoothThickToElemSizeRatio = 0.3;
117 const double theMinSmoothTriaAngle = 30;
118 const double theMinSmoothQuadAngle = 45;
120 // what part of thickness is allowed till intersection
121 // (defined by SALOME_TESTS/Grids/smesh/viscous_layers_00/A5)
122 const double theThickToIntersection = 1.5;
124 bool needSmoothing( double cosin, double tgtThick, double elemSize )
126 return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
128 double getSmoothingThickness( double cosin, double elemSize )
130 return theSmoothThickToElemSizeRatio * elemSize / cosin;
134 * \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
135 * It is stored in a SMESH_subMesh of the SOLID as SMESH_subMeshEventListenerData
137 struct _MeshOfSolid : public SMESH_ProxyMesh,
138 public SMESH_subMeshEventListenerData
140 bool _n2nMapComputed;
141 SMESH_ComputeErrorPtr _warning;
143 _MeshOfSolid( SMESH_Mesh* mesh)
144 :SMESH_subMeshEventListenerData( /*isDeletable=*/true),_n2nMapComputed(false)
146 SMESH_ProxyMesh::setMesh( *mesh );
149 // returns submesh for a geom face
150 SMESH_ProxyMesh::SubMesh* getFaceSubM(const TopoDS_Face& F, bool create=false)
152 TGeomID i = SMESH_ProxyMesh::shapeIndex(F);
153 return create ? SMESH_ProxyMesh::getProxySubMesh(i) : findProxySubMesh(i);
155 void setNode2Node(const SMDS_MeshNode* srcNode,
156 const SMDS_MeshNode* proxyNode,
157 const SMESH_ProxyMesh::SubMesh* subMesh)
159 SMESH_ProxyMesh::setNode2Node( srcNode,proxyNode,subMesh);
162 //--------------------------------------------------------------------------------
164 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
165 * It is used to clear an inferior dim sub-meshes modified by viscous layers
167 class _ShrinkShapeListener : SMESH_subMeshEventListener
169 _ShrinkShapeListener()
170 : SMESH_subMeshEventListener(/*isDeletable=*/false,
171 "StdMeshers_ViscousLayers::_ShrinkShapeListener") {}
173 static SMESH_subMeshEventListener* Get() { static _ShrinkShapeListener l; return &l; }
174 virtual void ProcessEvent(const int event,
176 SMESH_subMesh* solidSM,
177 SMESH_subMeshEventListenerData* data,
178 const SMESH_Hypothesis* hyp)
180 if ( SMESH_subMesh::COMPUTE_EVENT == eventType && solidSM->IsEmpty() && data )
182 SMESH_subMeshEventListener::ProcessEvent(event,eventType,solidSM,data,hyp);
186 //--------------------------------------------------------------------------------
188 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
189 * It is used to store data computed by _ViscousBuilder for a sub-mesh and to
190 * delete the data as soon as it has been used
192 class _ViscousListener : SMESH_subMeshEventListener
195 SMESH_subMeshEventListener(/*isDeletable=*/false,
196 "StdMeshers_ViscousLayers::_ViscousListener") {}
197 static SMESH_subMeshEventListener* Get() { static _ViscousListener l; return &l; }
199 virtual void ProcessEvent(const int event,
201 SMESH_subMesh* subMesh,
202 SMESH_subMeshEventListenerData* data,
203 const SMESH_Hypothesis* hyp)
205 if (( SMESH_subMesh::COMPUTE_EVENT == eventType ) &&
206 ( SMESH_subMesh::CHECK_COMPUTE_STATE != event &&
207 SMESH_subMesh::SUBMESH_COMPUTED != event ))
209 // delete SMESH_ProxyMesh containing temporary faces
210 subMesh->DeleteEventListener( this );
213 // Finds or creates proxy mesh of the solid
214 static _MeshOfSolid* GetSolidMesh(SMESH_Mesh* mesh,
215 const TopoDS_Shape& solid,
218 if ( !mesh ) return 0;
219 SMESH_subMesh* sm = mesh->GetSubMesh(solid);
220 _MeshOfSolid* data = (_MeshOfSolid*) sm->GetEventListenerData( Get() );
221 if ( !data && toCreate )
223 data = new _MeshOfSolid(mesh);
224 data->mySubMeshes.push_back( sm ); // to find SOLID by _MeshOfSolid
225 sm->SetEventListener( Get(), data, sm );
229 // Removes proxy mesh of the solid
230 static void RemoveSolidMesh(SMESH_Mesh* mesh, const TopoDS_Shape& solid)
232 mesh->GetSubMesh(solid)->DeleteEventListener( _ViscousListener::Get() );
236 //================================================================================
238 * \brief sets a sub-mesh event listener to clear sub-meshes of sub-shapes of
239 * the main shape when sub-mesh of the main shape is cleared,
240 * for example to clear sub-meshes of FACEs when sub-mesh of a SOLID
243 //================================================================================
245 void ToClearSubWithMain( SMESH_subMesh* sub, const TopoDS_Shape& main)
247 SMESH_subMesh* mainSM = sub->GetFather()->GetSubMesh( main );
248 SMESH_subMeshEventListenerData* data =
249 mainSM->GetEventListenerData( _ShrinkShapeListener::Get());
252 if ( find( data->mySubMeshes.begin(), data->mySubMeshes.end(), sub ) ==
253 data->mySubMeshes.end())
254 data->mySubMeshes.push_back( sub );
258 data = SMESH_subMeshEventListenerData::MakeData( /*dependent=*/sub );
259 sub->SetEventListener( _ShrinkShapeListener::Get(), data, /*whereToListenTo=*/mainSM );
263 //--------------------------------------------------------------------------------
265 * \brief Simplex (triangle or tetrahedron) based on 1 (tria) or 2 (tet) nodes of
266 * _LayerEdge and 2 nodes of the mesh surface beening smoothed.
267 * The class is used to check validity of face or volumes around a smoothed node;
268 * it stores only 2 nodes as the other nodes are stored by _LayerEdge.
272 const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
273 const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
274 _Simplex(const SMDS_MeshNode* nPrev=0,
275 const SMDS_MeshNode* nNext=0,
276 const SMDS_MeshNode* nOpp=0)
277 : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
278 bool IsForward(const gp_XYZ* pntSrc, const gp_XYZ* pntTgt, double& vol) const
280 const double M[3][3] =
281 {{ _nNext->X() - pntSrc->X(), _nNext->Y() - pntSrc->Y(), _nNext->Z() - pntSrc->Z() },
282 { pntTgt->X() - pntSrc->X(), pntTgt->Y() - pntSrc->Y(), pntTgt->Z() - pntSrc->Z() },
283 { _nPrev->X() - pntSrc->X(), _nPrev->Y() - pntSrc->Y(), _nPrev->Z() - pntSrc->Z() }};
284 vol = ( + M[0][0] * M[1][1] * M[2][2]
285 + M[0][1] * M[1][2] * M[2][0]
286 + M[0][2] * M[1][0] * M[2][1]
287 - M[0][0] * M[1][2] * M[2][1]
288 - M[0][1] * M[1][0] * M[2][2]
289 - M[0][2] * M[1][1] * M[2][0]);
292 bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ& pTgt, double& vol) const
294 SMESH_TNodeXYZ pSrc( nSrc );
295 return IsForward( &pSrc, &pTgt, vol );
297 bool IsForward(const gp_XY& tgtUV,
298 const SMDS_MeshNode* smoothedNode,
299 const TopoDS_Face& face,
300 SMESH_MesherHelper& helper,
301 const double refSign) const
303 gp_XY prevUV = helper.GetNodeUV( face, _nPrev, smoothedNode );
304 gp_XY nextUV = helper.GetNodeUV( face, _nNext, smoothedNode );
305 gp_Vec2d v1( tgtUV, prevUV ), v2( tgtUV, nextUV );
307 return d*refSign > 1e-100;
309 bool IsMinAngleOK( const gp_XYZ& pTgt, double& minAngle ) const
311 SMESH_TNodeXYZ pPrev( _nPrev ), pNext( _nNext );
312 if ( !_nOpp ) // triangle
314 gp_Vec tp( pPrev - pTgt ), pn( pNext - pPrev ), nt( pTgt - pNext );
315 double tp2 = tp.SquareMagnitude();
316 double pn2 = pn.SquareMagnitude();
317 double nt2 = nt.SquareMagnitude();
319 if ( tp2 < pn2 && tp2 < nt2 )
320 minAngle = ( nt * -pn ) * ( nt * -pn ) / nt2 / pn2;
321 else if ( pn2 < nt2 )
322 minAngle = ( tp * -nt ) * ( tp * -nt ) / tp2 / nt2;
324 minAngle = ( pn * -tp ) * ( pn * -tp ) / pn2 / tp2;
326 static double theMaxCos2 = ( Cos( theMinSmoothTriaAngle * M_PI / 180. ) *
327 Cos( theMinSmoothTriaAngle * M_PI / 180. ));
328 return minAngle < theMaxCos2;
332 SMESH_TNodeXYZ pOpp( _nOpp );
333 gp_Vec tp( pPrev - pTgt ), po( pOpp - pPrev ), on( pNext - pOpp), nt( pTgt - pNext );
334 double tp2 = tp.SquareMagnitude();
335 double po2 = po.SquareMagnitude();
336 double on2 = on.SquareMagnitude();
337 double nt2 = nt.SquareMagnitude();
338 minAngle = Max( Max((( tp * -nt ) * ( tp * -nt ) / tp2 / nt2 ),
339 (( po * -tp ) * ( po * -tp ) / po2 / tp2 )),
340 Max((( on * -po ) * ( on * -po ) / on2 / po2 ),
341 (( nt * -on ) * ( nt * -on ) / nt2 / on2 )));
343 static double theMaxCos2 = ( Cos( theMinSmoothQuadAngle * M_PI / 180. ) *
344 Cos( theMinSmoothQuadAngle * M_PI / 180. ));
345 return minAngle < theMaxCos2;
348 bool IsNeighbour(const _Simplex& other) const
350 return _nPrev == other._nNext || _nNext == other._nPrev;
352 bool Includes( const SMDS_MeshNode* node ) const { return _nPrev == node || _nNext == node; }
353 static void GetSimplices( const SMDS_MeshNode* node,
354 vector<_Simplex>& simplices,
355 const set<TGeomID>& ingnoreShapes,
356 const _SolidData* dataToCheckOri = 0,
357 const bool toSort = false);
358 static void SortSimplices(vector<_Simplex>& simplices);
360 //--------------------------------------------------------------------------------
362 * Structure used to take into account surface curvature while smoothing
367 double _k; // factor to correct node smoothed position
368 double _h2lenRatio; // avgNormProj / (2*avgDist)
369 gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
371 static _Curvature* New( double avgNormProj, double avgDist )
374 if ( fabs( avgNormProj / avgDist ) > 1./200 )
377 c->_r = avgDist * avgDist / avgNormProj;
378 c->_k = avgDist * avgDist / c->_r / c->_r;
379 //c->_k = avgNormProj / c->_r;
380 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
381 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
383 c->_uv.SetCoord( 0., 0. );
387 double lenDelta(double len) const { return _k * ( _r + len ); }
388 double lenDeltaByDist(double dist) const { return dist * _h2lenRatio; }
390 //--------------------------------------------------------------------------------
394 struct _EdgesOnShape;
396 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
398 //--------------------------------------------------------------------------------
400 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
401 * and a node of the most internal layer (_nodes.back())
405 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
407 vector< const SMDS_MeshNode*> _nodes;
409 gp_XYZ _normal; // to boundary of solid
410 vector<gp_XYZ> _pos; // points computed during inflation
411 double _len; // length achived with the last inflation step
412 double _maxLen; // maximal possible length
413 double _cosin; // of angle (_normal ^ surface)
414 double _minAngle; // of _simplices
415 double _lenFactor; // to compute _len taking _cosin into account
418 // simplices connected to the source node (_nodes[0]);
419 // used for smoothing and quality check of _LayerEdge's based on the FACE
420 vector<_Simplex> _simplices;
421 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
422 PSmooFun _smooFunction; // smoothing function
423 _Curvature* _curvature;
424 // data for smoothing of _LayerEdge's based on the EDGE
425 _2NearEdges* _2neibors;
427 enum EFlags { TO_SMOOTH = 1,
428 MOVED = 2, // set by _neibors[i]->SetNewLength()
429 SMOOTHED = 4, // set by this->Smooth()
430 DIFFICULT = 8, // near concave VERTEX
431 ON_CONCAVE_FACE = 16,
432 BLOCKED = 32, // not to inflate any more
433 INTERSECTED = 64, // close intersection with a face found
434 NORMAL_UPDATED = 128,
435 MARKED = 256, // local usage
436 MULTI_NORMAL = 512, // a normal is invisible by some of surrounding faces
437 NEAR_BOUNDARY = 1024,// is near FACE boundary forcing smooth
438 SMOOTHED_C1 = 2048,// is on _eosC1
439 DISTORTED = 4096,// was bad before smoothing
440 RISKY_SWOL = 8192 // SWOL is parallel to a source FACE
442 bool Is ( EFlags f ) const { return _flags & f; }
443 void Set ( EFlags f ) { _flags |= f; }
444 void Unset( EFlags f ) { _flags &= ~f; }
446 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
447 bool SetNewLength2d( Handle(Geom_Surface)& surface,
448 const TopoDS_Face& F,
450 SMESH_MesherHelper& helper );
451 void SetDataByNeighbors( const SMDS_MeshNode* n1,
452 const SMDS_MeshNode* n2,
453 const _EdgesOnShape& eos,
454 SMESH_MesherHelper& helper);
455 void Block( _SolidData& data );
456 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
457 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
458 const TNode2Edge& n2eMap);
459 void SmoothPos( const vector< double >& segLen, const double tol );
460 int Smooth(const int step, const bool isConcaveFace, bool findBest);
461 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
462 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
463 void SmoothWoCheck();
464 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
465 const TopoDS_Face& F,
466 SMESH_MesherHelper& helper);
467 void MoveNearConcaVer( const _EdgesOnShape* eov,
468 const _EdgesOnShape* eos,
470 vector< _LayerEdge* > & badSmooEdges);
471 bool FindIntersection( SMESH_ElementSearcher& searcher,
473 const double& epsilon,
475 const SMDS_MeshElement** face = 0);
476 bool SegTriaInter( const gp_Ax1& lastSegment,
481 const double& epsilon) const;
482 bool SegTriaInter( const gp_Ax1& lastSegment,
483 const SMDS_MeshNode* n0,
484 const SMDS_MeshNode* n1,
485 const SMDS_MeshNode* n2,
487 const double& epsilon) const
488 { return SegTriaInter( lastSegment,
489 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
492 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
493 const gp_XYZ& PrevCheckPos() const { return _pos[ Is( NORMAL_UPDATED ) ? _pos.size()-2 : 0 ]; }
494 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
495 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos ) const;
496 bool IsOnEdge() const { return _2neibors; }
497 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
498 void SetCosin( double cosin );
499 void SetNormal( const gp_XYZ& n ) { _normal = n; }
500 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
501 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
502 void SetSmooLen( double len ) { // set _len at which smoothing is needed
503 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
505 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
507 gp_XYZ smoothLaplacian();
508 gp_XYZ smoothAngular();
509 gp_XYZ smoothLengthWeighted();
510 gp_XYZ smoothCentroidal();
511 gp_XYZ smoothNefPolygon();
513 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
514 static const int theNbSmooFuns = FUN_NB;
515 static PSmooFun _funs[theNbSmooFuns];
516 static const char* _funNames[theNbSmooFuns+1];
517 int smooFunID( PSmooFun fun=0) const;
519 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
520 &_LayerEdge::smoothLengthWeighted,
521 &_LayerEdge::smoothCentroidal,
522 &_LayerEdge::smoothNefPolygon,
523 &_LayerEdge::smoothAngular };
524 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
532 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
534 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
535 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
538 //--------------------------------------------------------------------------------
540 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
544 gp_XY _pos, _dir, _inNorm;
545 bool IsOut( const gp_XY p, const double tol ) const
547 return _inNorm * ( p - _pos ) < -tol;
549 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
551 //const double eps = 1e-10;
552 double D = _dir.Crossed( hp._dir );
553 if ( fabs(D) < std::numeric_limits<double>::min())
555 gp_XY vec21 = _pos - hp._pos;
556 double u = hp._dir.Crossed( vec21 ) / D;
557 intPnt = _pos + _dir * u;
561 //--------------------------------------------------------------------------------
563 * Structure used to smooth a _LayerEdge based on an EDGE.
567 double _wgt [2]; // weights of _nodes
568 _LayerEdge* _edges[2];
570 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
573 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
574 const SMDS_MeshNode* tgtNode(bool is2nd) {
575 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
577 const SMDS_MeshNode* srcNode(bool is2nd) {
578 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
581 std::swap( _wgt [0], _wgt [1] );
582 std::swap( _edges[0], _edges[1] );
584 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
585 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
587 bool include( const _LayerEdge* e ) {
588 return ( _edges[0] == e || _edges[1] == e );
593 //--------------------------------------------------------------------------------
595 * \brief Layers parameters got by averaging several hypotheses
599 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
600 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
604 void Add( const StdMeshers_ViscousLayers* hyp )
609 _nbLayers = hyp->GetNumberLayers();
610 //_thickness += hyp->GetTotalThickness();
611 _thickness = Max( _thickness, hyp->GetTotalThickness() );
612 _stretchFactor += hyp->GetStretchFactor();
613 _method = hyp->GetMethod();
616 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
617 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
618 int GetNumberLayers() const { return _nbLayers; }
619 int GetMethod() const { return _method; }
621 bool UseSurfaceNormal() const
622 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
623 bool ToSmooth() const
624 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
625 bool IsOffsetMethod() const
626 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
629 int _nbLayers, _nbHyps, _method;
630 double _thickness, _stretchFactor;
633 //--------------------------------------------------------------------------------
635 * \brief _LayerEdge's on a shape and other shape data
639 vector< _LayerEdge* > _edges;
643 SMESH_subMesh * _subMesh;
644 // face or edge w/o layer along or near which _edges are inflated
646 bool _isRegularSWOL; // w/o singularities
647 // averaged StdMeshers_ViscousLayers parameters
650 _Smoother1D* _edgeSmoother;
651 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
652 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
654 vector< gp_XYZ > _faceNormals; // if _shape is FACE
655 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
657 Handle(ShapeAnalysis_Surface) _offsetSurf;
658 _LayerEdge* _edgeForOffset;
660 _SolidData* _data; // parent SOLID
662 TopAbs_ShapeEnum ShapeType() const
663 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
664 TopAbs_ShapeEnum SWOLType() const
665 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
666 bool HasC1( const _EdgesOnShape* other ) const
667 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
668 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
669 _SolidData& GetData() const { return *_data; }
671 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0) {}
674 //--------------------------------------------------------------------------------
676 * \brief Convex FACE whose radius of curvature is less than the thickness of
677 * layers. It is used to detect distortion of prisms based on a convex
678 * FACE and to update normals to enable further increasing the thickness
684 // edges whose _simplices are used to detect prism distortion
685 vector< _LayerEdge* > _simplexTestEdges;
687 // map a sub-shape to _SolidData::_edgesOnShape
688 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
692 bool GetCenterOfCurvature( _LayerEdge* ledge,
693 BRepLProp_SLProps& surfProp,
694 SMESH_MesherHelper& helper,
695 gp_Pnt & center ) const;
696 bool CheckPrisms() const;
699 //--------------------------------------------------------------------------------
701 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
702 * at inflation up to the full thickness. A detected collision
703 * is fixed in updateNormals()
705 struct _CollisionEdges
708 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
709 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
710 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
713 //--------------------------------------------------------------------------------
715 * \brief Data of a SOLID
719 typedef const StdMeshers_ViscousLayers* THyp;
721 TGeomID _index; // SOLID id
722 _MeshOfSolid* _proxyMesh;
724 list< TopoDS_Shape > _hypShapes;
725 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
726 set< TGeomID > _reversedFaceIds;
727 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
729 double _stepSize, _stepSizeCoeff, _geomSize;
730 const SMDS_MeshNode* _stepSizeNodes[2];
732 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
734 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
735 map< TGeomID, TNode2Edge* > _s2neMap;
736 // _LayerEdge's with underlying shapes
737 vector< _EdgesOnShape > _edgesOnShape;
739 // key: an id of shape (EDGE or VERTEX) shared by a FACE with
740 // layers and a FACE w/o layers
741 // value: the shape (FACE or EDGE) to shrink mesh on.
742 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
743 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
745 // Convex FACEs whose radius of curvature is less than the thickness of layers
746 map< TGeomID, _ConvexFace > _convexFaces;
748 // shapes (EDGEs and VERTEXes) srink from which is forbidden due to collisions with
749 // the adjacent SOLID
750 set< TGeomID > _noShrinkShapes;
752 int _nbShapesToSmooth;
754 //map< TGeomID,Handle(Geom_Curve)> _edge2curve;
756 vector< _CollisionEdges > _collisionEdges;
757 set< TGeomID > _concaveFaces;
759 double _maxThickness; // of all _hyps
760 double _minThickness; // of all _hyps
762 double _epsilon; // precision for SegTriaInter()
764 SMESH_MesherHelper* _helper;
766 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
768 :_solid(s), _proxyMesh(m), _helper(0) {}
771 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
772 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
774 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
775 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
776 return id2face == _convexFaces.end() ? 0 : & id2face->second;
778 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
779 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
780 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
781 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
783 SMESH_MesherHelper& GetHelper() const { return *_helper; }
786 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
787 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
788 _edgesOnShape[i]._edges[j]->Unset( _LayerEdge::MARKED );
790 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
791 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
793 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
795 //--------------------------------------------------------------------------------
797 * \brief Offset plane used in getNormalByOffset()
803 int _faceIndexNext[2];
804 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
807 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
809 void ComputeIntersectionLine( _OffsetPlane& pln );
810 gp_XYZ GetCommonPoint(bool& isFound) const;
811 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
813 //--------------------------------------------------------------------------------
815 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
817 struct _CentralCurveOnEdge
820 vector< gp_Pnt > _curvaCenters;
821 vector< _LayerEdge* > _ledges;
822 vector< gp_XYZ > _normals; // new normal for each of _ledges
823 vector< double > _segLength2;
826 TopoDS_Face _adjFace;
827 bool _adjFaceToSmooth;
829 void Append( const gp_Pnt& center, _LayerEdge* ledge )
831 if ( _curvaCenters.size() > 0 )
832 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
833 _curvaCenters.push_back( center );
834 _ledges.push_back( ledge );
835 _normals.push_back( ledge->_normal );
837 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
838 void SetShapes( const TopoDS_Edge& edge,
839 const _ConvexFace& convFace,
841 SMESH_MesherHelper& helper);
843 //--------------------------------------------------------------------------------
845 * \brief Data of node on a shrinked FACE
849 const SMDS_MeshNode* _node;
850 vector<_Simplex> _simplices; // for quality check
852 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
854 bool Smooth(int& badNb,
855 Handle(Geom_Surface)& surface,
856 SMESH_MesherHelper& helper,
857 const double refSign,
861 gp_XY computeAngularPos(vector<gp_XY>& uv,
862 const gp_XY& uvToFix,
863 const double refSign );
865 //--------------------------------------------------------------------------------
867 * \brief Builder of viscous layers
869 class _ViscousBuilder
874 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
875 const TopoDS_Shape& shape);
876 // check validity of hypotheses
877 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
878 const TopoDS_Shape& shape );
880 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
881 void RestoreListeners();
883 // computes SMESH_ProxyMesh::SubMesh::_n2n;
884 bool MakeN2NMap( _MeshOfSolid* pm );
888 bool findSolidsWithLayers();
889 bool findFacesWithLayers(const bool onlyWith=false);
890 void getIgnoreFaces(const TopoDS_Shape& solid,
891 const StdMeshers_ViscousLayers* hyp,
892 const TopoDS_Shape& hypShape,
893 set<TGeomID>& ignoreFaces);
894 bool makeLayer(_SolidData& data);
895 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
896 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
897 SMESH_MesherHelper& helper, _SolidData& data);
898 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
899 const TopoDS_Face& face,
900 SMESH_MesherHelper& helper,
902 bool shiftInside=false);
903 bool getFaceNormalAtSingularity(const gp_XY& uv,
904 const TopoDS_Face& face,
905 SMESH_MesherHelper& helper,
907 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
908 gp_XYZ getNormalByOffset( _LayerEdge* edge,
909 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
911 bool findNeiborsOnEdge(const _LayerEdge* edge,
912 const SMDS_MeshNode*& n1,
913 const SMDS_MeshNode*& n2,
916 void findSimplexTestEdges( _SolidData& data,
917 vector< vector<_LayerEdge*> >& edgesByGeom);
918 void computeGeomSize( _SolidData& data );
919 bool findShapesToSmooth( _SolidData& data);
920 void limitStepSizeByCurvature( _SolidData& data );
921 void limitStepSize( _SolidData& data,
922 const SMDS_MeshElement* face,
923 const _LayerEdge* maxCosinEdge );
924 void limitStepSize( _SolidData& data, const double minSize);
925 bool inflate(_SolidData& data);
926 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
927 int invalidateBadSmooth( _SolidData& data,
928 SMESH_MesherHelper& helper,
929 vector< _LayerEdge* >& badSmooEdges,
930 vector< _EdgesOnShape* >& eosC1,
932 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
933 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep, int smooStep=0, bool moveAll=false );
934 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
935 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
936 bool updateNormalsOfConvexFaces( _SolidData& data,
937 SMESH_MesherHelper& helper,
939 void updateNormalsOfC1Vertices( _SolidData& data );
940 bool updateNormalsOfSmoothed( _SolidData& data,
941 SMESH_MesherHelper& helper,
943 const double stepSize );
944 bool isNewNormalOk( _SolidData& data,
946 const gp_XYZ& newNormal);
947 bool refine(_SolidData& data);
949 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
950 SMESH_MesherHelper& helper,
951 const SMESHDS_SubMesh* faceSubMesh );
952 void restoreNoShrink( _LayerEdge& edge ) const;
953 void fixBadFaces(const TopoDS_Face& F,
954 SMESH_MesherHelper& helper,
957 set<const SMDS_MeshNode*> * involvedNodes=NULL);
958 bool addBoundaryElements();
960 bool error( const string& text, int solidID=-1 );
961 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
964 void makeGroupOfLE();
967 SMESH_ComputeErrorPtr _error;
969 vector< _SolidData > _sdVec;
972 //--------------------------------------------------------------------------------
974 * \brief Shrinker of nodes on the EDGE
978 TopoDS_Edge _geomEdge;
979 vector<double> _initU;
980 vector<double> _normPar;
981 vector<const SMDS_MeshNode*> _nodes;
982 const _LayerEdge* _edges[2];
985 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
986 void Compute(bool set3D, SMESH_MesherHelper& helper);
987 void RestoreParams();
988 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
989 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
990 const SMDS_MeshNode* TgtNode( bool is2nd ) const
991 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
992 const SMDS_MeshNode* SrcNode( bool is2nd ) const
993 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
995 //--------------------------------------------------------------------------------
997 * \brief Smoother of _LayerEdge's on EDGE.
1001 struct OffPnt // point of the offsetted EDGE
1003 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1004 double _len; // length reached at previous inflation step
1005 double _param; // on EDGE
1006 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1007 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1009 vector< OffPnt > _offPoints;
1010 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1011 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1012 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1013 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1014 _EdgesOnShape& _eos;
1015 double _curveLen; // length of the EDGE
1017 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1019 SMESH_MesherHelper& helper);
1021 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1022 _EdgesOnShape& eos )
1023 : _anaCurve( curveForSmooth ), _eos( eos )
1026 bool Perform(_SolidData& data,
1027 Handle(ShapeAnalysis_Surface)& surface,
1028 const TopoDS_Face& F,
1029 SMESH_MesherHelper& helper )
1031 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
1035 return smoothAnalyticEdge( data, surface, F, helper );
1037 return smoothComplexEdge ( data, surface, F, helper );
1039 void prepare(_SolidData& data );
1041 bool smoothAnalyticEdge( _SolidData& data,
1042 Handle(ShapeAnalysis_Surface)& surface,
1043 const TopoDS_Face& F,
1044 SMESH_MesherHelper& helper);
1046 bool smoothComplexEdge( _SolidData& data,
1047 Handle(ShapeAnalysis_Surface)& surface,
1048 const TopoDS_Face& F,
1049 SMESH_MesherHelper& helper);
1051 void setNormalOnV( const bool is2nd,
1052 SMESH_MesherHelper& helper);
1054 _LayerEdge* getLEdgeOnV( bool is2nd )
1056 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1058 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1060 //--------------------------------------------------------------------------------
1062 * \brief Class of temporary mesh face.
1063 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1064 * needed because SMESH_ElementSearcher internaly uses set of elements sorted by ID
1066 struct _TmpMeshFace : public SMDS_MeshElement
1068 vector<const SMDS_MeshNode* > _nn;
1069 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1070 int id, int faceID=-1, int idInFace=-1):
1071 SMDS_MeshElement(id), _nn(nodes) { setShapeId(faceID); setIdInShape(idInFace); }
1072 virtual const SMDS_MeshNode* GetNode(const int ind) const { return _nn[ind]; }
1073 virtual SMDSAbs_ElementType GetType() const { return SMDSAbs_Face; }
1074 virtual vtkIdType GetVtkType() const { return -1; }
1075 virtual SMDSAbs_EntityType GetEntityType() const { return SMDSEntity_Last; }
1076 virtual SMDSAbs_GeometryType GetGeomType() const
1077 { return _nn.size() == 3 ? SMDSGeom_TRIANGLE : SMDSGeom_QUADRANGLE; }
1078 virtual SMDS_ElemIteratorPtr elementsIterator(SMDSAbs_ElementType) const
1079 { return SMDS_ElemIteratorPtr( new SMDS_NodeVectorElemIterator( _nn.begin(), _nn.end()));}
1081 //--------------------------------------------------------------------------------
1083 * \brief Class of temporary mesh face storing _LayerEdge it's based on
1085 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1087 _LayerEdge *_le1, *_le2;
1088 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1089 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1091 _nn[0]=_le1->_nodes[0];
1092 _nn[1]=_le1->_nodes.back();
1093 _nn[2]=_le2->_nodes.back();
1094 _nn[3]=_le2->_nodes[0];
1096 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1098 SMESH_TNodeXYZ p0s( _nn[0] );
1099 SMESH_TNodeXYZ p0t( _nn[1] );
1100 SMESH_TNodeXYZ p1t( _nn[2] );
1101 SMESH_TNodeXYZ p1s( _nn[3] );
1102 gp_XYZ v0 = p0t - p0s;
1103 gp_XYZ v1 = p1t - p1s;
1104 gp_XYZ v01 = p1s - p0s;
1105 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1110 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1112 _nn[0]=le1->_nodes[0];
1113 _nn[1]=le1->_nodes.back();
1114 _nn[2]=le2->_nodes.back();
1115 _nn[3]=le2->_nodes[0];
1119 //--------------------------------------------------------------------------------
1121 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1122 * \warning Location of a surface is ignored
1124 struct _NodeCoordHelper
1126 SMESH_MesherHelper& _helper;
1127 const TopoDS_Face& _face;
1128 Handle(Geom_Surface) _surface;
1129 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1131 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1132 : _helper( helper ), _face( F )
1136 TopLoc_Location loc;
1137 _surface = BRep_Tool::Surface( _face, loc );
1139 if ( _surface.IsNull() )
1140 _fun = & _NodeCoordHelper::direct;
1142 _fun = & _NodeCoordHelper::byUV;
1144 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1147 gp_XYZ direct(const SMDS_MeshNode* n) const
1149 return SMESH_TNodeXYZ( n );
1151 gp_XYZ byUV (const SMDS_MeshNode* n) const
1153 gp_XY uv = _helper.GetNodeUV( _face, n );
1154 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1158 //================================================================================
1160 * \brief Check angle between vectors
1162 //================================================================================
1164 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1166 double dot = v1 * v2; // cos * |v1| * |v2|
1167 double l1 = v1.SquareMagnitude();
1168 double l2 = v2.SquareMagnitude();
1169 return (( dot * cos >= 0 ) &&
1170 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1173 } // namespace VISCOUS_3D
1177 //================================================================================
1178 // StdMeshers_ViscousLayers hypothesis
1180 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, int studyId, SMESH_Gen* gen)
1181 :SMESH_Hypothesis(hypId, studyId, gen),
1182 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1183 _method( SURF_OFFSET_SMOOTH )
1185 _name = StdMeshers_ViscousLayers::GetHypType();
1186 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1187 } // --------------------------------------------------------------------------------
1188 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1190 if ( faceIds != _shapeIds )
1191 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1192 if ( _isToIgnoreShapes != toIgnore )
1193 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1194 } // --------------------------------------------------------------------------------
1195 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1197 if ( thickness != _thickness )
1198 _thickness = thickness, NotifySubMeshesHypothesisModification();
1199 } // --------------------------------------------------------------------------------
1200 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1202 if ( _nbLayers != nb )
1203 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1204 } // --------------------------------------------------------------------------------
1205 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1207 if ( _stretchFactor != factor )
1208 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1209 } // --------------------------------------------------------------------------------
1210 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1212 if ( _method != method )
1213 _method = method, NotifySubMeshesHypothesisModification();
1214 } // --------------------------------------------------------------------------------
1215 SMESH_ProxyMesh::Ptr
1216 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1217 const TopoDS_Shape& theShape,
1218 const bool toMakeN2NMap) const
1220 using namespace VISCOUS_3D;
1221 _ViscousBuilder bulder;
1222 SMESH_ComputeErrorPtr err = bulder.Compute( theMesh, theShape );
1223 if ( err && !err->IsOK() )
1224 return SMESH_ProxyMesh::Ptr();
1226 vector<SMESH_ProxyMesh::Ptr> components;
1227 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1228 for ( ; exp.More(); exp.Next() )
1230 if ( _MeshOfSolid* pm =
1231 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1233 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1234 if ( !bulder.MakeN2NMap( pm ))
1235 return SMESH_ProxyMesh::Ptr();
1236 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1237 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1239 if ( pm->_warning && !pm->_warning->IsOK() )
1241 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1242 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1243 if ( !smError || smError->IsOK() )
1244 smError = pm->_warning;
1247 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1249 switch ( components.size() )
1253 case 1: return components[0];
1255 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1257 return SMESH_ProxyMesh::Ptr();
1258 } // --------------------------------------------------------------------------------
1259 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1261 save << " " << _nbLayers
1262 << " " << _thickness
1263 << " " << _stretchFactor
1264 << " " << _shapeIds.size();
1265 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1266 save << " " << _shapeIds[i];
1267 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1268 save << " " << _method;
1270 } // --------------------------------------------------------------------------------
1271 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1273 int nbFaces, faceID, shapeToTreat, method;
1274 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1275 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1276 _shapeIds.push_back( faceID );
1277 if ( load >> shapeToTreat ) {
1278 _isToIgnoreShapes = !shapeToTreat;
1279 if ( load >> method )
1280 _method = (ExtrusionMethod) method;
1283 _isToIgnoreShapes = true; // old behavior
1286 } // --------------------------------------------------------------------------------
1287 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* theMesh,
1288 const TopoDS_Shape& theShape)
1292 } // --------------------------------------------------------------------------------
1293 SMESH_ComputeErrorPtr
1294 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1295 const TopoDS_Shape& theShape,
1296 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1298 VISCOUS_3D::_ViscousBuilder bulder;
1299 SMESH_ComputeErrorPtr err = bulder.CheckHypotheses( theMesh, theShape );
1300 if ( err && !err->IsOK() )
1301 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1303 theStatus = SMESH_Hypothesis::HYP_OK;
1307 // --------------------------------------------------------------------------------
1308 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1311 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1312 return IsToIgnoreShapes() ? !isIn : isIn;
1314 // END StdMeshers_ViscousLayers hypothesis
1315 //================================================================================
1317 namespace VISCOUS_3D
1319 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV )
1323 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1324 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1325 gp_Pnt p = BRep_Tool::Pnt( fromV );
1326 double distF = p.SquareDistance( c->Value( f ));
1327 double distL = p.SquareDistance( c->Value( l ));
1328 c->D1(( distF < distL ? f : l), p, dir );
1329 if ( distL < distF ) dir.Reverse();
1332 //--------------------------------------------------------------------------------
1333 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1334 SMESH_MesherHelper& helper)
1337 double f,l; gp_Pnt p;
1338 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1339 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1340 double u = helper.GetNodeU( E, atNode );
1344 //--------------------------------------------------------------------------------
1345 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1346 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok,
1348 //--------------------------------------------------------------------------------
1349 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1350 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1353 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1356 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1357 return getFaceDir( F, v, node, helper, ok );
1359 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1360 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1361 gp_Pnt p; gp_Vec du, dv, norm;
1362 surface->D1( uv.X(),uv.Y(), p, du,dv );
1365 double u = helper.GetNodeU( fromE, node, 0, &ok );
1367 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1368 if ( o == TopAbs_REVERSED )
1371 gp_Vec dir = norm ^ du;
1373 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1374 helper.IsClosedEdge( fromE ))
1376 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1377 else c->D1( f, p, dv );
1378 if ( o == TopAbs_REVERSED )
1380 gp_Vec dir2 = norm ^ dv;
1381 dir = dir.Normalized() + dir2.Normalized();
1385 //--------------------------------------------------------------------------------
1386 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1387 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1388 bool& ok, double* cosin)
1390 TopoDS_Face faceFrw = F;
1391 faceFrw.Orientation( TopAbs_FORWARD );
1392 //double f,l; TopLoc_Location loc;
1393 TopoDS_Edge edges[2]; // sharing a vertex
1396 TopoDS_Vertex VV[2];
1397 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1398 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1400 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1401 if ( SMESH_Algo::isDegenerated( e )) continue;
1402 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1403 if ( VV[1].IsSame( fromV )) {
1404 nbEdges += edges[ 0 ].IsNull();
1407 else if ( VV[0].IsSame( fromV )) {
1408 nbEdges += edges[ 1 ].IsNull();
1413 gp_XYZ dir(0,0,0), edgeDir[2];
1416 // get dirs of edges going fromV
1418 for ( size_t i = 0; i < nbEdges && ok; ++i )
1420 edgeDir[i] = getEdgeDir( edges[i], fromV );
1421 double size2 = edgeDir[i].SquareModulus();
1422 if (( ok = size2 > numeric_limits<double>::min() ))
1423 edgeDir[i] /= sqrt( size2 );
1425 if ( !ok ) return dir;
1427 // get angle between the 2 edges
1429 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1430 if ( Abs( angle ) < 5 * M_PI/180 )
1432 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1436 dir = edgeDir[0] + edgeDir[1];
1441 double angle = gp_Vec( edgeDir[0] ).Angle( dir );
1442 *cosin = Cos( angle );
1445 else if ( nbEdges == 1 )
1447 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1448 if ( cosin ) *cosin = 1.;
1458 //================================================================================
1460 * \brief Finds concave VERTEXes of a FACE
1462 //================================================================================
1464 bool getConcaveVertices( const TopoDS_Face& F,
1465 SMESH_MesherHelper& helper,
1466 set< TGeomID >* vertices = 0)
1468 // check angles at VERTEXes
1470 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1471 for ( size_t iW = 0; iW < wires.size(); ++iW )
1473 const int nbEdges = wires[iW]->NbEdges();
1474 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1476 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1478 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1479 int iE2 = ( iE1 + 1 ) % nbEdges;
1480 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1481 iE2 = ( iE2 + 1 ) % nbEdges;
1482 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1483 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1484 wires[iW]->Edge( iE2 ), F, V );
1485 if ( angle < -5. * M_PI / 180. )
1489 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1493 return vertices ? !vertices->empty() : false;
1496 //================================================================================
1498 * \brief Returns true if a FACE is bound by a concave EDGE
1500 //================================================================================
1502 bool isConcave( const TopoDS_Face& F,
1503 SMESH_MesherHelper& helper,
1504 set< TGeomID >* vertices = 0 )
1506 bool isConcv = false;
1507 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1509 gp_Vec2d drv1, drv2;
1511 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1512 for ( ; eExp.More(); eExp.Next() )
1514 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1515 if ( SMESH_Algo::isDegenerated( E )) continue;
1516 // check if 2D curve is concave
1517 BRepAdaptor_Curve2d curve( E, F );
1518 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1519 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1520 curve.Intervals( intervals, GeomAbs_C2 );
1521 bool isConvex = true;
1522 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1524 double u1 = intervals( i );
1525 double u2 = intervals( i+1 );
1526 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1527 double cross = drv1 ^ drv2;
1528 if ( E.Orientation() == TopAbs_REVERSED )
1530 isConvex = ( cross > -1e-9 ); // 0.1 );
1534 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1543 // check angles at VERTEXes
1544 if ( getConcaveVertices( F, helper, vertices ))
1550 //================================================================================
1552 * \brief Computes mimimal distance of face in-FACE nodes from an EDGE
1553 * \param [in] face - the mesh face to treat
1554 * \param [in] nodeOnEdge - a node on the EDGE
1555 * \param [out] faceSize - the computed distance
1556 * \return bool - true if faceSize computed
1558 //================================================================================
1560 bool getDistFromEdge( const SMDS_MeshElement* face,
1561 const SMDS_MeshNode* nodeOnEdge,
1564 faceSize = Precision::Infinite();
1567 int nbN = face->NbCornerNodes();
1568 int iOnE = face->GetNodeIndex( nodeOnEdge );
1569 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1570 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1571 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1572 face->GetNode( iNext[1] ) };
1573 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1574 double segLen = -1.;
1575 // look for two neighbor not in-FACE nodes of face
1576 for ( int i = 0; i < 2; ++i )
1578 if ( nNext[i]->GetPosition()->GetDim() != 2 &&
1579 nNext[i]->GetID() < nodeOnEdge->GetID() )
1581 // look for an in-FACE node
1582 for ( int iN = 0; iN < nbN; ++iN )
1584 if ( iN == iOnE || iN == iNext[i] )
1586 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1587 gp_XYZ v = pInFace - segEnd;
1590 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1591 segLen = segVec.Modulus();
1593 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1594 faceSize = Min( faceSize, distToSeg );
1602 //================================================================================
1604 * \brief Return direction of axis or revolution of a surface
1606 //================================================================================
1608 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1611 switch ( surface.GetType() ) {
1614 gp_Cone cone = surface.Cone();
1615 axis = cone.Axis().Direction();
1618 case GeomAbs_Sphere:
1620 gp_Sphere sphere = surface.Sphere();
1621 axis = sphere.Position().Direction();
1624 case GeomAbs_SurfaceOfRevolution:
1626 axis = surface.AxeOfRevolution().Direction();
1629 //case GeomAbs_SurfaceOfExtrusion:
1630 case GeomAbs_OffsetSurface:
1632 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1633 return getRovolutionAxis( base->Surface(), axis );
1635 default: return false;
1640 //--------------------------------------------------------------------------------
1641 // DEBUG. Dump intermediate node positions into a python script
1642 // HOWTO use: run python commands written in a console to see
1643 // construction steps of viscous layers
1648 PyDump(SMESH_Mesh& m) {
1649 int tag = 3 + m.GetId();
1650 const char* fname = "/tmp/viscous.py";
1651 cout << "execfile('"<<fname<<"')"<<endl;
1652 py = new ofstream(fname);
1653 *py << "import SMESH" << endl
1654 << "from salome.smesh import smeshBuilder" << endl
1655 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
1656 << "meshSO = smesh.GetCurrentStudy().FindObjectID('0:1:2:" << tag <<"')" << endl
1657 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1662 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1663 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1664 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1665 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1669 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1671 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1672 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1673 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1674 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1675 void _dumpFunction(const string& fun, int ln)
1676 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1677 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1678 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1679 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1680 void _dumpCmd(const string& txt, int ln)
1681 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1682 void dumpFunctionEnd()
1683 { if (py) *py<< " return"<< endl; }
1684 void dumpChangeNodes( const SMDS_MeshElement* f )
1685 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1686 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1687 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1688 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1692 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} };
1693 #define dumpFunction(f) f
1695 #define dumpMoveComm(n,txt)
1696 #define dumpCmd(txt)
1697 #define dumpFunctionEnd()
1698 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1699 #define debugMsg( txt ) {}
1704 using namespace VISCOUS_3D;
1706 //================================================================================
1708 * \brief Constructor of _ViscousBuilder
1710 //================================================================================
1712 _ViscousBuilder::_ViscousBuilder()
1714 _error = SMESH_ComputeError::New(COMPERR_OK);
1718 //================================================================================
1720 * \brief Stores error description and returns false
1722 //================================================================================
1724 bool _ViscousBuilder::error(const string& text, int solidId )
1726 const string prefix = string("Viscous layers builder: ");
1727 _error->myName = COMPERR_ALGO_FAILED;
1728 _error->myComment = prefix + text;
1731 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1732 if ( !sm && !_sdVec.empty() )
1733 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1734 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1736 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1737 if ( smError && smError->myAlgo )
1738 _error->myAlgo = smError->myAlgo;
1740 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1742 // set KO to all solids
1743 for ( size_t i = 0; i < _sdVec.size(); ++i )
1745 if ( _sdVec[i]._index == solidId )
1747 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1748 if ( !sm->IsEmpty() )
1750 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1751 if ( !smError || smError->IsOK() )
1753 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1754 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1758 makeGroupOfLE(); // debug
1763 //================================================================================
1765 * \brief At study restoration, restore event listeners used to clear an inferior
1766 * dim sub-mesh modified by viscous layers
1768 //================================================================================
1770 void _ViscousBuilder::RestoreListeners()
1775 //================================================================================
1777 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1779 //================================================================================
1781 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1783 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1784 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1785 for ( ; fExp.More(); fExp.Next() )
1787 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1788 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
1790 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
1792 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
1795 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
1796 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
1798 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
1799 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
1800 while( prxIt->more() )
1802 const SMDS_MeshElement* fSrc = srcIt->next();
1803 const SMDS_MeshElement* fPrx = prxIt->next();
1804 if ( fSrc->NbNodes() != fPrx->NbNodes())
1805 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
1806 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
1807 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
1810 pm->_n2nMapComputed = true;
1814 //================================================================================
1816 * \brief Does its job
1818 //================================================================================
1820 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
1821 const TopoDS_Shape& theShape)
1823 // TODO: set priority of solids during Gen::Compute()
1827 // check if proxy mesh already computed
1828 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1830 return error("No SOLID's in theShape"), _error;
1832 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
1833 return SMESH_ComputeErrorPtr(); // everything already computed
1835 PyDump debugDump( theMesh );
1837 // TODO: ignore already computed SOLIDs
1838 if ( !findSolidsWithLayers())
1841 if ( !findFacesWithLayers() )
1844 for ( size_t i = 0; i < _sdVec.size(); ++i )
1846 if ( ! makeLayer(_sdVec[i]) )
1849 if ( _sdVec[i]._n2eMap.size() == 0 )
1852 if ( ! inflate(_sdVec[i]) )
1855 if ( ! refine(_sdVec[i]) )
1861 addBoundaryElements();
1863 makeGroupOfLE(); // debug
1869 //================================================================================
1871 * \brief Check validity of hypotheses
1873 //================================================================================
1875 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
1876 const TopoDS_Shape& shape )
1880 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
1881 return SMESH_ComputeErrorPtr(); // everything already computed
1884 findSolidsWithLayers();
1885 bool ok = findFacesWithLayers( true );
1887 // remove _MeshOfSolid's of _SolidData's
1888 for ( size_t i = 0; i < _sdVec.size(); ++i )
1889 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
1894 return SMESH_ComputeErrorPtr();
1897 //================================================================================
1899 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
1901 //================================================================================
1903 bool _ViscousBuilder::findSolidsWithLayers()
1906 TopTools_IndexedMapOfShape allSolids;
1907 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
1908 _sdVec.reserve( allSolids.Extent());
1910 SMESH_Gen* gen = _mesh->GetGen();
1911 SMESH_HypoFilter filter;
1912 for ( int i = 1; i <= allSolids.Extent(); ++i )
1914 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
1915 SMESH_Algo* algo = gen->GetAlgo( *_mesh, allSolids(i) );
1916 if ( !algo ) continue;
1917 // TODO: check if algo is hidden
1918 const list <const SMESHDS_Hypothesis *> & allHyps =
1919 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
1920 _SolidData* soData = 0;
1921 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
1922 const StdMeshers_ViscousLayers* viscHyp = 0;
1923 for ( ; hyp != allHyps.end(); ++hyp )
1924 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
1926 TopoDS_Shape hypShape;
1927 filter.Init( filter.Is( viscHyp ));
1928 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
1932 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
1935 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
1936 soData = & _sdVec.back();
1937 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
1938 soData->_helper = new SMESH_MesherHelper( *_mesh );
1939 soData->_helper->SetSubShape( allSolids(i) );
1941 soData->_hyps.push_back( viscHyp );
1942 soData->_hypShapes.push_back( hypShape );
1945 if ( _sdVec.empty() )
1947 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
1952 //================================================================================
1956 //================================================================================
1958 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
1960 SMESH_MesherHelper helper( *_mesh );
1961 TopExp_Explorer exp;
1962 TopTools_IndexedMapOfShape solids;
1964 // collect all faces-to-ignore defined by hyp
1965 for ( size_t i = 0; i < _sdVec.size(); ++i )
1967 solids.Add( _sdVec[i]._solid );
1969 // get faces-to-ignore defined by each hyp
1970 typedef const StdMeshers_ViscousLayers* THyp;
1971 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
1972 list< TFacesOfHyp > ignoreFacesOfHyps;
1973 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
1974 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
1975 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
1977 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
1978 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
1981 // fill _SolidData::_face2hyp and check compatibility of hypotheses
1982 const int nbHyps = _sdVec[i]._hyps.size();
1985 // check if two hypotheses define different parameters for the same FACE
1986 list< TFacesOfHyp >::iterator igFacesOfHyp;
1987 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
1989 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
1991 igFacesOfHyp = ignoreFacesOfHyps.begin();
1992 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
1993 if ( ! igFacesOfHyp->first.count( faceID ))
1996 return error(SMESH_Comment("Several hypotheses define "
1997 "Viscous Layers on the face #") << faceID );
1998 hyp = igFacesOfHyp->second;
2001 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2003 _sdVec[i]._ignoreFaceIds.insert( faceID );
2006 // check if two hypotheses define different number of viscous layers for
2007 // adjacent faces of a solid
2008 set< int > nbLayersSet;
2009 igFacesOfHyp = ignoreFacesOfHyps.begin();
2010 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2012 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2014 if ( nbLayersSet.size() > 1 )
2016 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2018 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2019 THyp hyp1 = 0, hyp2 = 0;
2020 while( const TopoDS_Shape* face = fIt->next() )
2022 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2023 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2024 if ( f2h != _sdVec[i]._face2hyp.end() )
2026 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2029 if ( hyp1 && hyp2 &&
2030 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2032 return error("Two hypotheses define different number of "
2033 "viscous layers on adjacent faces");
2037 } // if ( nbHyps > 1 )
2040 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2044 if ( onlyWith ) // is called to check hypotheses compatibility only
2047 // fill _SolidData::_reversedFaceIds
2048 for ( size_t i = 0; i < _sdVec.size(); ++i )
2050 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2051 for ( ; exp.More(); exp.Next() )
2053 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2054 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2055 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2056 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2057 helper.IsReversedSubMesh( face ))
2059 _sdVec[i]._reversedFaceIds.insert( faceID );
2064 // Find faces to shrink mesh on (solution 2 in issue 0020832);
2065 TopTools_IndexedMapOfShape shapes;
2066 for ( size_t i = 0; i < _sdVec.size(); ++i )
2069 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2070 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2072 const TopoDS_Shape& edge = shapes(iE);
2073 // find 2 faces sharing an edge
2075 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE);
2076 while ( fIt->more())
2078 const TopoDS_Shape* f = fIt->next();
2079 if ( helper.IsSubShape( *f, _sdVec[i]._solid))
2080 FF[ int( !FF[0].IsNull()) ] = *f;
2082 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2083 // check presence of layers on them
2085 for ( int j = 0; j < 2; ++j )
2086 ignore[j] = _sdVec[i]._ignoreFaceIds.count ( getMeshDS()->ShapeToIndex( FF[j] ));
2087 if ( ignore[0] == ignore[1] )
2088 continue; // nothing interesting
2089 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ];
2090 // check presence of layers on fWOL within an adjacent SOLID
2091 bool collision = false;
2092 PShapeIteratorPtr sIt = helper.GetAncestors( fWOL, *_mesh, TopAbs_SOLID );
2093 while ( const TopoDS_Shape* solid = sIt->next() )
2094 if ( !solid->IsSame( _sdVec[i]._solid ))
2096 int iSolid = solids.FindIndex( *solid );
2097 int iFace = getMeshDS()->ShapeToIndex( fWOL );
2098 if ( iSolid > 0 && !_sdVec[ iSolid-1 ]._ignoreFaceIds.count( iFace ))
2100 //_sdVec[i]._noShrinkShapes.insert( iFace );
2106 if ( !fWOL.IsNull())
2108 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2109 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2112 // _shrinkShape2Shape will be used to temporary inflate _LayerEdge's based
2113 // on the edge but shrink won't be performed
2114 _sdVec[i]._noShrinkShapes.insert( edgeInd );
2119 // Exclude from _shrinkShape2Shape FACE's that can't be shrinked since
2120 // the algo of the SOLID sharing the FACE does not support it
2121 set< string > notSupportAlgos; notSupportAlgos.insert("Hexa_3D");
2122 for ( size_t i = 0; i < _sdVec.size(); ++i )
2124 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2125 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2127 const TopoDS_Shape& fWOL = e2f->second;
2128 const TGeomID edgeID = e2f->first;
2129 bool notShrinkFace = false;
2130 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2131 while ( soIt->more() )
2133 const TopoDS_Shape* solid = soIt->next();
2134 if ( _sdVec[i]._solid.IsSame( *solid )) continue;
2135 SMESH_Algo* algo = _mesh->GetGen()->GetAlgo( *_mesh, *solid );
2136 if ( !algo || !notSupportAlgos.count( algo->GetName() )) continue;
2137 notShrinkFace = true;
2139 for ( ; iSolid < _sdVec.size(); ++iSolid )
2141 if ( _sdVec[iSolid]._solid.IsSame( *solid ) ) {
2142 if ( _sdVec[iSolid]._shrinkShape2Shape.count( edgeID ))
2143 notShrinkFace = false;
2147 if ( notShrinkFace )
2149 _sdVec[i]._noShrinkShapes.insert( edgeID );
2151 // add VERTEXes of the edge in _noShrinkShapes
2152 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2153 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2154 _sdVec[i]._noShrinkShapes.insert( getMeshDS()->ShapeToIndex( vIt.Value() ));
2156 // check if there is a collision with to-shrink-from EDGEs in iSolid
2157 if ( iSolid == _sdVec.size() )
2158 continue; // no VL in the solid
2160 TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2161 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2163 const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2164 const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2165 if ( eID == edgeID ||
2166 !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2167 _sdVec[i]._noShrinkShapes.count( eID ))
2169 for ( int is1st = 0; is1st < 2; ++is1st )
2171 TopoDS_Vertex V = helper.IthVertex( is1st, E );
2172 if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2174 // _sdVec[i]._noShrinkShapes.insert( eID );
2175 // V = helper.IthVertex( !is1st, E );
2176 // _sdVec[i]._noShrinkShapes.insert( getMeshDS()->ShapeToIndex( V ));
2177 //iE = 0; // re-start the loop on EDGEs of fWOL
2178 return error("No way to make a conformal mesh with "
2179 "the given set of faces with layers", _sdVec[i]._index);
2185 } // while ( soIt->more() )
2186 } // loop on _sdVec[i]._shrinkShape2Shape
2187 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2189 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2191 for ( size_t i = 0; i < _sdVec.size(); ++i )
2194 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2195 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2197 const TopoDS_Shape& vertex = shapes(iV);
2198 // find faces WOL sharing the vertex
2199 vector< TopoDS_Shape > facesWOL;
2200 size_t totalNbFaces = 0;
2201 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE);
2202 while ( fIt->more())
2204 const TopoDS_Shape* f = fIt->next();
2205 if ( helper.IsSubShape( *f, _sdVec[i]._solid ) )
2208 const int fID = getMeshDS()->ShapeToIndex( *f );
2209 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&&
2210 !_sdVec[i]._noShrinkShapes.count( fID )*/)
2211 facesWOL.push_back( *f );
2214 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2215 continue; // no layers at this vertex or no WOL
2216 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2217 switch ( facesWOL.size() )
2221 helper.SetSubShape( facesWOL[0] );
2222 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2224 TopoDS_Shape seamEdge;
2225 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2226 while ( eIt->more() && seamEdge.IsNull() )
2228 const TopoDS_Shape* e = eIt->next();
2229 if ( helper.IsRealSeam( *e ) )
2232 if ( !seamEdge.IsNull() )
2234 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2238 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2243 // find an edge shared by 2 faces
2244 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2245 while ( eIt->more())
2247 const TopoDS_Shape* e = eIt->next();
2248 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2249 helper.IsSubShape( *e, facesWOL[1]))
2251 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2257 return error("Not yet supported case", _sdVec[i]._index);
2262 // add FACEs of other SOLIDs to _ignoreFaceIds
2263 for ( size_t i = 0; i < _sdVec.size(); ++i )
2266 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2268 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2270 if ( !shapes.Contains( exp.Current() ))
2271 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2278 //================================================================================
2280 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2282 //================================================================================
2284 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2285 const StdMeshers_ViscousLayers* hyp,
2286 const TopoDS_Shape& hypShape,
2287 set<TGeomID>& ignoreFaceIds)
2289 TopExp_Explorer exp;
2291 vector<TGeomID> ids = hyp->GetBndShapes();
2292 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2294 for ( size_t ii = 0; ii < ids.size(); ++ii )
2296 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2297 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2298 ignoreFaceIds.insert( ids[ii] );
2301 else // FACEs with layers are given
2303 exp.Init( solid, TopAbs_FACE );
2304 for ( ; exp.More(); exp.Next() )
2306 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2307 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2308 ignoreFaceIds.insert( faceInd );
2312 // ignore internal FACEs if inlets and outlets are specified
2313 if ( hyp->IsToIgnoreShapes() )
2315 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2316 TopExp::MapShapesAndAncestors( hypShape,
2317 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2319 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2321 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2322 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2325 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2327 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2332 //================================================================================
2334 * \brief Create the inner surface of the viscous layer and prepare data for infation
2336 //================================================================================
2338 bool _ViscousBuilder::makeLayer(_SolidData& data)
2340 // get all sub-shapes to make layers on
2341 set<TGeomID> subIds, faceIds;
2342 subIds = data._noShrinkShapes;
2343 TopExp_Explorer exp( data._solid, TopAbs_FACE );
2344 for ( ; exp.More(); exp.Next() )
2346 SMESH_subMesh* fSubM = _mesh->GetSubMesh( exp.Current() );
2347 if ( ! data._ignoreFaceIds.count( fSubM->GetId() ))
2348 faceIds.insert( fSubM->GetId() );
2351 // make a map to find new nodes on sub-shapes shared with other SOLID
2352 map< TGeomID, TNode2Edge* >::iterator s2ne;
2353 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2354 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2356 TGeomID shapeInd = s2s->first;
2357 for ( size_t i = 0; i < _sdVec.size(); ++i )
2359 if ( _sdVec[i]._index == data._index ) continue;
2360 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2361 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2362 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2364 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2370 // Create temporary faces and _LayerEdge's
2372 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2374 data._stepSize = Precision::Infinite();
2375 data._stepSizeNodes[0] = 0;
2377 SMESH_MesherHelper helper( *_mesh );
2378 helper.SetSubShape( data._solid );
2379 helper.SetElementsOnShape( true );
2381 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2382 TNode2Edge::iterator n2e2;
2384 // collect _LayerEdge's of shapes they are based on
2385 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2386 const int nbShapes = getMeshDS()->MaxShapeIndex();
2387 edgesByGeom.resize( nbShapes+1 );
2389 // set data of _EdgesOnShape's
2390 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
2392 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
2393 while ( smIt->more() )
2396 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
2397 !faceIds.count( sm->GetId() ))
2399 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
2402 // make _LayerEdge's
2403 for ( set<TGeomID>::iterator id = faceIds.begin(); id != faceIds.end(); ++id )
2405 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( *id ));
2406 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2407 SMESH_ProxyMesh::SubMesh* proxySub =
2408 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2410 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2411 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << *id, data._index );
2413 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2414 while ( eIt->more() )
2416 const SMDS_MeshElement* face = eIt->next();
2417 double faceMaxCosin = -1;
2418 _LayerEdge* maxCosinEdge = 0;
2419 int nbDegenNodes = 0;
2421 newNodes.resize( face->NbCornerNodes() );
2422 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2424 const SMDS_MeshNode* n = face->GetNode( i );
2425 const int shapeID = n->getshapeId();
2426 const bool onDegenShap = helper.IsDegenShape( shapeID );
2427 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2432 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2433 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2434 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2435 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2445 TNode2Edge::iterator n2e = data._n2eMap.insert( make_pair( n, (_LayerEdge*)0 )).first;
2446 if ( !(*n2e).second )
2449 _LayerEdge* edge = new _LayerEdge();
2450 edge->_nodes.push_back( n );
2452 edgesByGeom[ shapeID ]._edges.push_back( edge );
2453 const bool noShrink = data._noShrinkShapes.count( shapeID );
2455 SMESH_TNodeXYZ xyz( n );
2457 // set edge data or find already refined _LayerEdge and get data from it
2458 if (( !noShrink ) &&
2459 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2460 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2461 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2463 _LayerEdge* foundEdge = (*n2e2).second;
2464 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2465 foundEdge->_pos.push_back( lastPos );
2466 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2467 const_cast< SMDS_MeshNode* >
2468 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2474 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2476 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2479 if ( edge->_nodes.size() < 2 )
2480 edge->Block( data );
2481 //data._noShrinkShapes.insert( shapeID );
2483 dumpMove(edge->_nodes.back());
2485 if ( edge->_cosin > faceMaxCosin )
2487 faceMaxCosin = edge->_cosin;
2488 maxCosinEdge = edge;
2491 newNodes[ i ] = n2e->second->_nodes.back();
2494 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2496 if ( newNodes.size() - nbDegenNodes < 2 )
2499 // create a temporary face
2500 const SMDS_MeshElement* newFace =
2501 new _TmpMeshFace( newNodes, --_tmpFaceID, face->getshapeId(), face->getIdInShape() );
2502 proxySub->AddElement( newFace );
2504 // compute inflation step size by min size of element on a convex surface
2505 if ( faceMaxCosin > theMinSmoothCosin )
2506 limitStepSize( data, face, maxCosinEdge );
2508 } // loop on 2D elements on a FACE
2509 } // loop on FACEs of a SOLID to create _LayerEdge's
2512 // Set _LayerEdge::_neibors
2513 TNode2Edge::iterator n2e;
2514 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2516 _EdgesOnShape& eos = data._edgesOnShape[iS];
2517 for ( size_t i = 0; i < eos._edges.size(); ++i )
2519 _LayerEdge* edge = eos._edges[i];
2520 TIDSortedNodeSet nearNodes;
2521 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2522 while ( fIt->more() )
2524 const SMDS_MeshElement* f = fIt->next();
2525 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2526 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2528 nearNodes.erase( edge->_nodes[0] );
2529 edge->_neibors.reserve( nearNodes.size() );
2530 TIDSortedNodeSet::iterator node = nearNodes.begin();
2531 for ( ; node != nearNodes.end(); ++node )
2532 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2533 edge->_neibors.push_back( n2e->second );
2537 data._epsilon = 1e-7;
2538 if ( data._stepSize < 1. )
2539 data._epsilon *= data._stepSize;
2541 if ( !findShapesToSmooth( data ))
2544 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2545 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2547 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2548 const SMDS_MeshNode* nn[2];
2549 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2551 _EdgesOnShape& eos = data._edgesOnShape[iS];
2552 for ( size_t i = 0; i < eos._edges.size(); ++i )
2554 _LayerEdge* edge = eos._edges[i];
2555 if ( edge->IsOnEdge() )
2557 // get neighbor nodes
2558 bool hasData = ( edge->_2neibors->_edges[0] );
2559 if ( hasData ) // _LayerEdge is a copy of another one
2561 nn[0] = edge->_2neibors->srcNode(0);
2562 nn[1] = edge->_2neibors->srcNode(1);
2564 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2568 // set neighbor _LayerEdge's
2569 for ( int j = 0; j < 2; ++j )
2571 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2572 return error("_LayerEdge not found by src node", data._index);
2573 edge->_2neibors->_edges[j] = n2e->second;
2576 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2579 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2581 _Simplex& s = edge->_simplices[j];
2582 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2583 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2586 // For an _LayerEdge on a degenerated EDGE, copy some data from
2587 // a corresponding _LayerEdge on a VERTEX
2588 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2589 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2591 // Generally we should not get here
2592 if ( eos.ShapeType() != TopAbs_EDGE )
2594 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2595 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2596 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2598 const _LayerEdge* vEdge = n2e->second;
2599 edge->_normal = vEdge->_normal;
2600 edge->_lenFactor = vEdge->_lenFactor;
2601 edge->_cosin = vEdge->_cosin;
2604 } // loop on data._edgesOnShape._edges
2605 } // loop on data._edgesOnShape
2607 // fix _LayerEdge::_2neibors on EDGEs to smooth
2608 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2609 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2610 // if ( !e2c->second.IsNull() )
2612 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2613 // data.Sort2NeiborsOnEdge( eos->_edges );
2620 //================================================================================
2622 * \brief Compute inflation step size by min size of element on a convex surface
2624 //================================================================================
2626 void _ViscousBuilder::limitStepSize( _SolidData& data,
2627 const SMDS_MeshElement* face,
2628 const _LayerEdge* maxCosinEdge )
2631 double minSize = 10 * data._stepSize;
2632 const int nbNodes = face->NbCornerNodes();
2633 for ( int i = 0; i < nbNodes; ++i )
2635 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2636 const SMDS_MeshNode* curN = face->GetNode( i );
2637 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2638 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2640 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2641 if ( dist < minSize )
2642 minSize = dist, iN = i;
2645 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
2646 if ( newStep < data._stepSize )
2648 data._stepSize = newStep;
2649 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
2650 data._stepSizeNodes[0] = face->GetNode( iN );
2651 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
2655 //================================================================================
2657 * \brief Compute inflation step size by min size of element on a convex surface
2659 //================================================================================
2661 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
2663 if ( minSize < data._stepSize )
2665 data._stepSize = minSize;
2666 if ( data._stepSizeNodes[0] )
2669 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
2670 data._stepSizeCoeff = data._stepSize / dist;
2675 //================================================================================
2677 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
2679 //================================================================================
2681 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
2683 const int nbTestPnt = 5; // on a FACE sub-shape
2685 BRepLProp_SLProps surfProp( 2, 1e-6 );
2686 SMESH_MesherHelper helper( *_mesh );
2688 data._convexFaces.clear();
2690 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2692 _EdgesOnShape& eof = data._edgesOnShape[iS];
2693 if ( eof.ShapeType() != TopAbs_FACE ||
2694 data._ignoreFaceIds.count( eof._shapeID ))
2697 TopoDS_Face F = TopoDS::Face( eof._shape );
2698 SMESH_subMesh * sm = eof._subMesh;
2699 const TGeomID faceID = eof._shapeID;
2701 BRepAdaptor_Surface surface( F, false );
2702 surfProp.SetSurface( surface );
2704 bool isTooCurved = false;
2706 _ConvexFace cnvFace;
2707 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
2708 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/true);
2709 while ( smIt->more() )
2712 const TGeomID subID = sm->GetId();
2713 // find _LayerEdge's of a sub-shape
2715 if (( eos = data.GetShapeEdges( subID )))
2716 cnvFace._subIdToEOS.insert( make_pair( subID, eos ));
2719 // check concavity and curvature and limit data._stepSize
2720 const double minCurvature =
2721 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
2722 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
2723 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
2725 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
2726 surfProp.SetParameters( uv.X(), uv.Y() );
2727 if ( !surfProp.IsCurvatureDefined() )
2729 if ( surfProp.MaxCurvature() * oriFactor > minCurvature )
2731 limitStepSize( data, 0.9 / surfProp.MaxCurvature() * oriFactor );
2734 if ( surfProp.MinCurvature() * oriFactor > minCurvature )
2736 limitStepSize( data, 0.9 / surfProp.MinCurvature() * oriFactor );
2740 } // loop on sub-shapes of the FACE
2742 if ( !isTooCurved ) continue;
2744 _ConvexFace & convFace =
2745 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
2748 convFace._normalsFixed = false;
2750 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
2751 // prism distortion.
2752 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
2753 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
2755 // there are _LayerEdge's on the FACE it-self;
2756 // select _LayerEdge's near EDGEs
2757 _EdgesOnShape& eos = * id2eos->second;
2758 for ( size_t i = 0; i < eos._edges.size(); ++i )
2760 _LayerEdge* ledge = eos._edges[ i ];
2761 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
2762 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
2764 convFace._simplexTestEdges.push_back( ledge );
2771 // where there are no _LayerEdge's on a _ConvexFace,
2772 // as e.g. on a fillet surface with no internal nodes - issue 22580,
2773 // so that collision of viscous internal faces is not detected by check of
2774 // intersection of _LayerEdge's with the viscous internal faces.
2776 set< const SMDS_MeshNode* > usedNodes;
2778 // look for _LayerEdge's with null _sWOL
2779 id2eos = convFace._subIdToEOS.begin();
2780 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
2782 _EdgesOnShape& eos = * id2eos->second;
2783 if ( !eos._sWOL.IsNull() )
2785 for ( size_t i = 0; i < eos._edges.size(); ++i )
2787 _LayerEdge* ledge = eos._edges[ i ];
2788 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
2789 if ( !usedNodes.insert( srcNode ).second ) continue;
2791 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
2793 usedNodes.insert( ledge->_simplices[i]._nPrev );
2794 usedNodes.insert( ledge->_simplices[i]._nNext );
2796 convFace._simplexTestEdges.push_back( ledge );
2800 } // loop on FACEs of data._solid
2803 //================================================================================
2805 * \brief Detect shapes (and _LayerEdge's on them) to smooth
2807 //================================================================================
2809 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
2811 // define allowed thickness
2812 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
2814 data._maxThickness = 0;
2815 data._minThickness = 1e100;
2816 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
2817 for ( ; hyp != data._hyps.end(); ++hyp )
2819 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
2820 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
2822 //const double tgtThick = /*Min( 0.5 * data._geomSize, */data._maxThickness;
2824 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
2825 // boundry inclined to the shape at a sharp angle
2827 //list< TGeomID > shapesToSmooth;
2828 TopTools_MapOfShape edgesOfSmooFaces;
2830 SMESH_MesherHelper helper( *_mesh );
2833 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2834 data._nbShapesToSmooth = 0;
2836 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
2838 _EdgesOnShape& eos = edgesByGeom[iS];
2839 eos._toSmooth = false;
2840 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
2843 double tgtThick = eos._hyp.GetTotalThickness();
2844 TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE );
2845 for ( ; eExp.More() && !eos._toSmooth; eExp.Next() )
2847 TGeomID iE = getMeshDS()->ShapeToIndex( eExp.Current() );
2848 vector<_LayerEdge*>& eE = edgesByGeom[ iE ]._edges;
2849 if ( eE.empty() ) continue;
2852 for ( size_t i = 0; i < eE.size() && !eos._toSmooth; ++i )
2853 if ( eE[i]->_cosin > theMinSmoothCosin )
2855 SMDS_ElemIteratorPtr fIt = eE[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2856 while ( fIt->more() && !eos._toSmooth )
2858 const SMDS_MeshElement* face = fIt->next();
2859 if ( face->getshapeId() == eos._shapeID &&
2860 getDistFromEdge( face, eE[i]->_nodes[0], faceSize ))
2862 eos._toSmooth = needSmoothing( eE[i]->_cosin, tgtThick, faceSize );
2867 if ( eos._toSmooth )
2869 for ( eExp.ReInit(); eExp.More(); eExp.Next() )
2870 edgesOfSmooFaces.Add( eExp.Current() );
2872 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
2874 data._nbShapesToSmooth += eos._toSmooth;
2878 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
2880 _EdgesOnShape& eos = edgesByGeom[iS];
2881 eos._edgeSmoother = NULL;
2882 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
2883 if ( !eos._hyp.ToSmooth() ) continue;
2885 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
2886 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
2889 double tgtThick = eos._hyp.GetTotalThickness();
2890 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
2892 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
2893 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
2894 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
2895 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ));
2896 double angle = eDir.Angle( eV[0]->_normal );
2897 double cosin = Cos( angle );
2898 double cosinAbs = Abs( cosin );
2899 if ( cosinAbs > theMinSmoothCosin )
2901 // always smooth analytic EDGEs
2902 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
2903 eos._toSmooth = ! curve.IsNull();
2905 // compare tgtThick with the length of an end segment
2906 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
2907 while ( eIt->more() && !eos._toSmooth )
2909 const SMDS_MeshElement* endSeg = eIt->next();
2910 if ( endSeg->getshapeId() == (int) iS )
2913 SMESH_TNodeXYZ( endSeg->GetNode(0) ).Distance( endSeg->GetNode(1 ));
2914 eos._toSmooth = needSmoothing( cosinAbs, tgtThick, segLen );
2917 if ( eos._toSmooth )
2919 eos._edgeSmoother = new _Smoother1D( curve, eos );
2921 for ( size_t i = 0; i < eos._edges.size(); ++i )
2922 eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
2926 data._nbShapesToSmooth += eos._toSmooth;
2930 // Reset _cosin if no smooth is allowed by the user
2931 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
2933 _EdgesOnShape& eos = edgesByGeom[iS];
2934 if ( eos._edges.empty() ) continue;
2936 if ( !eos._hyp.ToSmooth() )
2937 for ( size_t i = 0; i < eos._edges.size(); ++i )
2938 eos._edges[i]->SetCosin( 0 );
2942 // Fill _eosC1 to make that C1 FACEs and EGDEs between them to be smoothed as a whole
2944 TopTools_MapOfShape c1VV;
2946 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
2948 _EdgesOnShape& eos = edgesByGeom[iS];
2949 if ( eos._edges.empty() ||
2950 eos.ShapeType() != TopAbs_FACE ||
2954 // check EDGEs of a FACE
2955 TopTools_MapOfShape checkedEE, allVV;
2956 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
2957 while ( !smQueue.empty() )
2959 SMESH_subMesh* sm = smQueue.front();
2960 smQueue.pop_front();
2961 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
2962 while ( smIt->more() )
2965 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
2966 allVV.Add( sm->GetSubShape() );
2967 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
2968 !checkedEE.Add( sm->GetSubShape() ))
2971 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
2972 vector<_LayerEdge*>& eE = eoe->_edges;
2973 if ( eE.empty() || !eoe->_sWOL.IsNull() )
2976 bool isC1 = true; // check continuity along an EDGE
2977 for ( size_t i = 0; i < eE.size() && isC1; ++i )
2978 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
2982 // check that mesh faces are C1 as well
2984 gp_XYZ norm1, norm2;
2985 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
2986 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
2987 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
2989 while ( fIt->more() && isC1 )
2990 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
2991 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
2996 // add the EDGE and an adjacent FACE to _eosC1
2997 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
2998 while ( const TopoDS_Shape* face = fIt->next() )
3000 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3001 if ( !eof ) continue; // other solid
3002 if ( !eos.HasC1( eoe ))
3004 eos._eosC1.push_back( eoe );
3005 eoe->_toSmooth = false;
3006 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3008 if ( eos._shapeID != eof->_shapeID && !eos.HasC1( eof ))
3010 eos._eosC1.push_back( eof );
3011 eof->_toSmooth = false;
3012 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3013 smQueue.push_back( eof->_subMesh );
3018 if ( eos._eosC1.empty() )
3021 // check VERTEXes of C1 FACEs
3022 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3023 for ( ; vIt.More(); vIt.Next() )
3025 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3026 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3029 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3030 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3031 while ( const TopoDS_Shape* face = fIt->next() )
3033 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3034 if ( !eof ) continue; // other solid
3035 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3041 eos._eosC1.push_back( eov );
3042 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3043 c1VV.Add( eov->_shape );
3047 } // fill _eosC1 of FACEs
3052 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3054 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3056 _EdgesOnShape& eov = edgesByGeom[iS];
3057 if ( eov._edges.empty() ||
3058 eov.ShapeType() != TopAbs_VERTEX ||
3059 c1VV.Contains( eov._shape ))
3061 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3063 // get directions of surrounding EDGEs
3065 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3066 while ( const TopoDS_Shape* e = fIt->next() )
3068 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3069 if ( !eoe ) continue; // other solid
3070 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V );
3071 if ( !Precision::IsInfinite( eDir.X() ))
3072 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3075 // find EDGEs with C1 directions
3076 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3077 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3078 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3080 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3081 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3084 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3085 double eLen1 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[i].first->_shape ));
3086 double eLen2 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[j].first->_shape ));
3087 if ( eLen1 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[i].first );
3088 if ( eLen2 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[j].first );
3089 dirOfEdges[i].first = 0;
3090 dirOfEdges[j].first = 0;
3093 } // fill _eosC1 of VERTEXes
3100 //================================================================================
3102 * \brief initialize data of _EdgesOnShape
3104 //================================================================================
3106 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3110 if ( !eos._shape.IsNull() ||
3111 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3114 SMESH_MesherHelper helper( *_mesh );
3117 eos._shapeID = sm->GetId();
3118 eos._shape = sm->GetSubShape();
3119 if ( eos.ShapeType() == TopAbs_FACE )
3120 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3121 eos._toSmooth = false;
3125 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3126 data._shrinkShape2Shape.find( eos._shapeID );
3127 if ( s2s != data._shrinkShape2Shape.end() )
3128 eos._sWOL = s2s->second;
3130 eos._isRegularSWOL = true;
3131 if ( eos.SWOLType() == TopAbs_FACE )
3133 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3134 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3135 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3139 if ( data._hyps.size() == 1 )
3141 eos._hyp = data._hyps.back();
3145 // compute average StdMeshers_ViscousLayers parameters
3146 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3147 if ( eos.ShapeType() == TopAbs_FACE )
3149 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3150 eos._hyp = f2hyp->second;
3154 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3155 while ( const TopoDS_Shape* face = fIt->next() )
3157 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3158 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3159 eos._hyp.Add( f2hyp->second );
3165 if ( ! eos._hyp.UseSurfaceNormal() )
3167 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3169 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3170 eos._faceNormals.resize( smDS->NbElements() );
3172 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3173 for ( int iF = 0; eIt->more(); ++iF )
3175 const SMDS_MeshElement* face = eIt->next();
3176 if ( !SMESH_MeshAlgos::FaceNormal( face, eos._faceNormals[iF], /*normalized=*/true ))
3177 eos._faceNormals[iF].SetCoord( 0,0,0 );
3180 if ( !helper.IsReversedSubMesh( TopoDS::Face( eos._shape )))
3181 for ( size_t iF = 0; iF < eos._faceNormals.size(); ++iF )
3182 eos._faceNormals[iF].Reverse();
3184 else // find EOS of adjacent FACEs
3186 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3187 while ( const TopoDS_Shape* face = fIt->next() )
3189 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3190 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3191 if ( eos._faceEOS.back()->_shape.IsNull() )
3192 // avoid using uninitialised _shapeID in GetNormal()
3193 eos._faceEOS.back()->_shapeID = faceID;
3199 //================================================================================
3201 * \brief Returns normal of a face
3203 //================================================================================
3205 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3208 const _EdgesOnShape* eos = 0;
3210 if ( face->getshapeId() == _shapeID )
3216 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3217 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3218 eos = _faceEOS[ iF ];
3222 ( ok = ( face->getIdInShape() < (int) eos->_faceNormals.size() )))
3224 norm = eos->_faceNormals[ face->getIdInShape() ];
3228 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3229 << " on _shape #" << _shapeID );
3235 //================================================================================
3237 * \brief Set data of _LayerEdge needed for smoothing
3239 //================================================================================
3241 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3243 SMESH_MesherHelper& helper,
3246 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3249 edge._maxLen = Precision::Infinite();
3252 edge._curvature = 0;
3255 // --------------------------
3256 // Compute _normal and _cosin
3257 // --------------------------
3260 edge._lenFactor = 1.;
3261 edge._normal.SetCoord(0,0,0);
3262 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3264 int totalNbFaces = 0;
3266 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3270 const bool onShrinkShape = !eos._sWOL.IsNull();
3271 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3272 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3274 // get geom FACEs the node lies on
3275 //if ( useGeometry )
3277 set<TGeomID> faceIds;
3278 if ( eos.ShapeType() == TopAbs_FACE )
3280 faceIds.insert( eos._shapeID );
3284 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3285 while ( fIt->more() )
3286 faceIds.insert( fIt->next()->getshapeId() );
3288 set<TGeomID>::iterator id = faceIds.begin();
3289 for ( ; id != faceIds.end(); ++id )
3291 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3292 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3294 F = TopoDS::Face( s );
3295 face2Norm[ totalNbFaces ].first = F;
3303 if ( onShrinkShape ) // one of faces the node is on has no layers
3305 if ( eos.SWOLType() == TopAbs_EDGE )
3307 // inflate from VERTEX along EDGE
3308 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ));
3310 else if ( eos.ShapeType() == TopAbs_VERTEX )
3312 // inflate from VERTEX along FACE
3313 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3314 node, helper, normOK, &edge._cosin);
3318 // inflate from EDGE along FACE
3319 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3320 node, helper, normOK);
3323 else // layers are on all FACEs of SOLID the node is on
3326 for ( int iF = 0; iF < totalNbFaces; ++iF )
3328 F = TopoDS::Face( face2Norm[ iF ].first );
3329 geomNorm = getFaceNormal( node, F, helper, normOK );
3330 if ( !normOK ) continue;
3333 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3335 face2Norm[ iF ].second = geomNorm.XYZ();
3336 edge._normal += geomNorm.XYZ();
3338 if ( nbOkNorms == 0 )
3339 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3341 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3343 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3344 edge._normal.SetCoord( 0,0,0 );
3345 for ( int iF = 0; iF < totalNbFaces; ++iF )
3347 const TopoDS_Face& F = face2Norm[iF].first;
3348 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3349 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3352 face2Norm[ iF ].second = geomNorm.XYZ();
3353 edge._normal += face2Norm[ iF ].second;
3357 if ( totalNbFaces >= 3 )
3359 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces );
3363 else // !useGeometry - get _normal using surrounding mesh faces
3365 edge._normal = getWeigthedNormal( &edge );
3367 // set<TGeomID> faceIds;
3369 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3370 // while ( fIt->more() )
3372 // const SMDS_MeshElement* face = fIt->next();
3373 // if ( eos.GetNormal( face, geomNorm ))
3375 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3376 // continue; // use only one mesh face on FACE
3377 // edge._normal += geomNorm.XYZ();
3384 //if ( eos._hyp.UseSurfaceNormal() )
3386 switch ( eos.ShapeType() )
3393 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3394 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3395 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3396 edge._cosin = Cos( angle );
3399 case TopAbs_VERTEX: {
3400 if ( eos.SWOLType() != TopAbs_FACE ) { // else _cosin is set by getFaceDir()
3401 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3402 gp_Vec inFaceDir = getFaceDir( F, V, node, helper, normOK );
3403 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3404 edge._cosin = Cos( angle );
3405 if ( totalNbFaces > 2 || helper.IsSeamShape( node->getshapeId() ))
3406 for ( int iF = totalNbFaces-2; iF >=0; --iF )
3408 F = face2Norm[ iF ].first;
3409 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3411 double angle = inFaceDir.Angle( edge._normal );
3412 double cosin = Cos( angle );
3413 if ( Abs( cosin ) > edge._cosin )
3414 edge._cosin = cosin;
3421 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3425 double normSize = edge._normal.SquareModulus();
3426 if ( normSize < numeric_limits<double>::min() )
3427 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3429 edge._normal /= sqrt( normSize );
3431 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3433 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3434 edge._nodes.resize( 1 );
3435 edge._normal.SetCoord( 0,0,0 );
3439 // Set the rest data
3440 // --------------------
3442 edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3444 if ( onShrinkShape )
3446 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3447 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3448 sm->RemoveNode( tgtNode , /*isNodeDeleted=*/false );
3450 // set initial position which is parameters on _sWOL in this case
3451 if ( eos.SWOLType() == TopAbs_EDGE )
3453 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3454 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3455 if ( edge._nodes.size() > 1 )
3456 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3458 else // eos.SWOLType() == TopAbs_FACE
3460 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3461 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3462 if ( edge._nodes.size() > 1 )
3463 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3466 if ( edge._nodes.size() > 1 )
3468 // check if an angle between a FACE with layers and SWOL is sharp,
3469 // else the edge should not inflate
3471 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3472 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3473 F = face2Norm[iF].first;
3476 geomNorm = getFaceNormal( node, F, helper, normOK );
3477 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3478 geomNorm.Reverse(); // inside the SOLID
3479 if ( geomNorm * edge._normal < -0.001 )
3481 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3482 edge._nodes.resize( 1 );
3484 else if ( edge._lenFactor > 3 )
3486 edge._lenFactor = 2;
3487 edge.Set( _LayerEdge::RISKY_SWOL );
3494 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3496 if ( eos.ShapeType() == TopAbs_FACE )
3499 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3501 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3502 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3507 // Set neighbor nodes for a _LayerEdge based on EDGE
3509 if ( eos.ShapeType() == TopAbs_EDGE /*||
3510 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3512 edge._2neibors = new _2NearEdges;
3513 // target nodes instead of source ones will be set later
3519 //================================================================================
3521 * \brief Return normal to a FACE at a node
3522 * \param [in] n - node
3523 * \param [in] face - FACE
3524 * \param [in] helper - helper
3525 * \param [out] isOK - true or false
3526 * \param [in] shiftInside - to find normal at a position shifted inside the face
3527 * \return gp_XYZ - normal
3529 //================================================================================
3531 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3532 const TopoDS_Face& face,
3533 SMESH_MesherHelper& helper,
3540 // get a shifted position
3541 gp_Pnt p = SMESH_TNodeXYZ( node );
3542 gp_XYZ shift( 0,0,0 );
3543 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
3544 switch ( S.ShapeType() ) {
3547 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
3552 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
3560 p.Translate( shift * 1e-5 );
3562 TopLoc_Location loc;
3563 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
3565 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
3567 projector.Perform( p );
3568 if ( !projector.IsDone() || projector.NbPoints() < 1 )
3573 Quantity_Parameter U,V;
3574 projector.LowerDistanceParameters(U,V);
3579 uv = helper.GetNodeUV( face, node, 0, &isOK );
3585 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
3587 if ( !shiftInside &&
3588 helper.IsDegenShape( node->getshapeId() ) &&
3589 getFaceNormalAtSingularity( uv, face, helper, normal ))
3592 return normal.XYZ();
3595 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
3596 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3598 if ( pointKind == IMPOSSIBLE &&
3599 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
3601 // probably NormEstim() failed due to a too high tolerance
3602 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
3603 isOK = ( pointKind < IMPOSSIBLE );
3605 if ( pointKind < IMPOSSIBLE )
3607 if ( pointKind != REGULAR &&
3609 node->GetPosition()->GetDim() < 2 ) // FACE boundary
3611 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
3612 if ( normShift * normal.XYZ() < 0. )
3618 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
3620 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
3622 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3623 while ( fIt->more() )
3625 const SMDS_MeshElement* f = fIt->next();
3626 if ( f->getshapeId() == faceID )
3628 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
3631 TopoDS_Face ff = face;
3632 ff.Orientation( TopAbs_FORWARD );
3633 if ( helper.IsReversedSubMesh( ff ))
3640 return normal.XYZ();
3643 //================================================================================
3645 * \brief Try to get normal at a singularity of a surface basing on it's nature
3647 //================================================================================
3649 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
3650 const TopoDS_Face& face,
3651 SMESH_MesherHelper& helper,
3654 BRepAdaptor_Surface surface( face );
3656 if ( !getRovolutionAxis( surface, axis ))
3659 double f,l, d, du, dv;
3660 f = surface.FirstUParameter();
3661 l = surface.LastUParameter();
3662 d = ( uv.X() - f ) / ( l - f );
3663 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3664 f = surface.FirstVParameter();
3665 l = surface.LastVParameter();
3666 d = ( uv.Y() - f ) / ( l - f );
3667 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3670 gp_Pnt2d testUV = uv;
3671 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3673 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
3674 for ( int iLoop = 0; true ; ++iLoop )
3676 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
3677 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
3684 if ( axis * refDir < 0. )
3692 //================================================================================
3694 * \brief Return a normal at a node weighted with angles taken by faces
3696 //================================================================================
3698 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
3700 const SMDS_MeshNode* n = edge->_nodes[0];
3702 gp_XYZ resNorm(0,0,0);
3703 SMESH_TNodeXYZ p0( n ), pP, pN;
3704 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
3706 pP.Set( edge->_simplices[i]._nPrev );
3707 pN.Set( edge->_simplices[i]._nNext );
3708 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
3709 double l0P = v0P.SquareMagnitude();
3710 double l0N = v0N.SquareMagnitude();
3711 double lPN = vPN.SquareMagnitude();
3712 if ( l0P < std::numeric_limits<double>::min() ||
3713 l0N < std::numeric_limits<double>::min() ||
3714 lPN < std::numeric_limits<double>::min() )
3716 double lNorm = norm.SquareMagnitude();
3717 double sin2 = lNorm / l0P / l0N;
3718 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
3720 double weight = sin2 * angle / lPN;
3721 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
3727 //================================================================================
3729 * \brief Return a normal at a node by getting a common point of offset planes
3730 * defined by the FACE normals
3732 //================================================================================
3734 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
3735 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
3738 SMESH_TNodeXYZ p0 = edge->_nodes[0];
3740 gp_XYZ resNorm(0,0,0);
3741 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
3742 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
3744 for ( int i = 0; i < nbFaces; ++i )
3745 resNorm += f2Normal[i].second;
3749 // prepare _OffsetPlane's
3750 vector< _OffsetPlane > pln( nbFaces );
3751 for ( int i = 0; i < nbFaces; ++i )
3753 pln[i]._faceIndex = i;
3754 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
3757 // intersect neighboring OffsetPlane's
3758 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
3759 while ( const TopoDS_Shape* edge = edgeIt->next() )
3761 int f1 = -1, f2 = -1;
3762 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
3763 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
3764 (( f1 < 0 ) ? f1 : f2 ) = i;
3767 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ]);
3770 // get a common point
3771 gp_XYZ commonPnt( 0, 0, 0 );
3774 for ( int i = 0; i < nbFaces; ++i )
3776 commonPnt += pln[ i ].GetCommonPoint( isPointFound );
3777 nbPoints += isPointFound;
3779 gp_XYZ wgtNorm = getWeigthedNormal( edge );
3780 if ( nbPoints == 0 )
3783 commonPnt /= nbPoints;
3784 resNorm = commonPnt - p0;
3786 // choose the best among resNorm and wgtNorm
3787 resNorm.Normalize();
3788 wgtNorm.Normalize();
3789 double resMinDot = std::numeric_limits<double>::max();
3790 double wgtMinDot = std::numeric_limits<double>::max();
3791 for ( int i = 0; i < nbFaces; ++i )
3793 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
3794 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
3797 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
3799 edge->Set( _LayerEdge::MULTI_NORMAL );
3802 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
3805 //================================================================================
3807 * \brief Compute line of intersection of 2 planes
3809 //================================================================================
3811 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln )
3813 int iNext = bool( _faceIndexNext[0] >= 0 );
3814 _faceIndexNext[ iNext ] = pln._faceIndex;
3816 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
3817 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
3819 gp_XYZ lineDir = n1 ^ n2;
3821 double x = Abs( lineDir.X() );
3822 double y = Abs( lineDir.Y() );
3823 double z = Abs( lineDir.Z() );
3825 int cooMax; // max coordinate
3827 if (x > z) cooMax = 1;
3831 if (y > z) cooMax = 2;
3835 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
3839 // the constants in the 2 plane equations
3840 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
3841 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
3846 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
3847 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
3850 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
3852 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
3855 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
3856 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
3860 gp_Lin& line = _lines[ iNext ];
3861 line.SetDirection( lineDir );
3862 line.SetLocation ( linePos );
3864 _isLineOK[ iNext ] = true;
3867 iNext = bool( pln._faceIndexNext[0] >= 0 );
3868 pln._lines [ iNext ] = line;
3869 pln._faceIndexNext[ iNext ] = this->_faceIndex;
3870 pln._isLineOK [ iNext ] = true;
3873 //================================================================================
3875 * \brief Computes intersection point of two _lines
3877 //================================================================================
3879 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound) const
3884 if ( NbLines() == 2 )
3886 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
3887 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
3888 if ( Abs( dot01 ) > std::numeric_limits<double>::min() )
3890 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
3891 double u1 = - ( lPerp0 * l0l1 ) / dot01;
3892 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
3900 //================================================================================
3902 * \brief Find 2 neigbor nodes of a node on EDGE
3904 //================================================================================
3906 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
3907 const SMDS_MeshNode*& n1,
3908 const SMDS_MeshNode*& n2,
3912 const SMDS_MeshNode* node = edge->_nodes[0];
3913 const int shapeInd = eos._shapeID;
3914 SMESHDS_SubMesh* edgeSM = 0;
3915 if ( eos.ShapeType() == TopAbs_EDGE )
3917 edgeSM = eos._subMesh->GetSubMeshDS();
3918 if ( !edgeSM || edgeSM->NbElements() == 0 )
3919 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
3923 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
3924 while ( eIt->more() && !n2 )
3926 const SMDS_MeshElement* e = eIt->next();
3927 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
3928 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
3931 if (!edgeSM->Contains(e)) continue;
3935 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
3936 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
3938 ( iN++ ? n2 : n1 ) = nNeibor;
3941 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
3945 //================================================================================
3947 * \brief Set _curvature and _2neibors->_plnNorm by 2 neigbor nodes residing the same EDGE
3949 //================================================================================
3951 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
3952 const SMDS_MeshNode* n2,
3953 const _EdgesOnShape& eos,
3954 SMESH_MesherHelper& helper)
3956 if ( eos.ShapeType() != TopAbs_EDGE )
3959 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
3960 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
3961 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
3965 double sumLen = vec1.Modulus() + vec2.Modulus();
3966 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
3967 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
3968 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
3969 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
3970 if ( _curvature ) delete _curvature;
3971 _curvature = _Curvature::New( avgNormProj, avgLen );
3972 // if ( _curvature )
3973 // debugMsg( _nodes[0]->GetID()
3974 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
3975 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
3976 // << _curvature->lenDelta(0) );
3980 if ( eos._sWOL.IsNull() )
3982 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3983 // if ( SMESH_Algo::isDegenerated( E ))
3985 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
3986 gp_XYZ plnNorm = dirE ^ _normal;
3987 double proj0 = plnNorm * vec1;
3988 double proj1 = plnNorm * vec2;
3989 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
3991 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
3992 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
3997 //================================================================================
3999 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4000 * this and other _LayerEdge's are inflated along a FACE or an EDGE
4002 //================================================================================
4004 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4006 SMESH_MesherHelper& helper )
4008 _nodes = other._nodes;
4009 _normal = other._normal;
4011 _lenFactor = other._lenFactor;
4012 _cosin = other._cosin;
4013 _2neibors = other._2neibors;
4014 _curvature = 0; std::swap( _curvature, other._curvature );
4015 _2neibors = 0; std::swap( _2neibors, other._2neibors );
4017 gp_XYZ lastPos( 0,0,0 );
4018 if ( eos.SWOLType() == TopAbs_EDGE )
4020 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4021 _pos.push_back( gp_XYZ( u, 0, 0));
4023 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4028 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4029 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4031 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4032 lastPos.SetX( uv.X() );
4033 lastPos.SetY( uv.Y() );
4038 //================================================================================
4040 * \brief Set _cosin and _lenFactor
4042 //================================================================================
4044 void _LayerEdge::SetCosin( double cosin )
4047 cosin = Abs( _cosin );
4048 //_lenFactor = ( cosin < 1.-1e-12 ) ? Min( 2., 1./sqrt(1-cosin*cosin )) : 1.0;
4049 _lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4052 //================================================================================
4054 * \brief Check if another _LayerEdge is a neighbor on EDGE
4056 //================================================================================
4058 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4060 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4061 ( edge->_2neibors && edge->_2neibors->include( this )));
4064 //================================================================================
4066 * \brief Fills a vector<_Simplex >
4068 //================================================================================
4070 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4071 vector<_Simplex>& simplices,
4072 const set<TGeomID>& ingnoreShapes,
4073 const _SolidData* dataToCheckOri,
4077 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4078 while ( fIt->more() )
4080 const SMDS_MeshElement* f = fIt->next();
4081 const TGeomID shapeInd = f->getshapeId();
4082 if ( ingnoreShapes.count( shapeInd )) continue;
4083 const int nbNodes = f->NbCornerNodes();
4084 const int srcInd = f->GetNodeIndex( node );
4085 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4086 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4087 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4088 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4089 std::swap( nPrev, nNext );
4090 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4094 SortSimplices( simplices );
4097 //================================================================================
4099 * \brief Set neighbor simplices side by side
4101 //================================================================================
4103 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4105 vector<_Simplex> sortedSimplices( simplices.size() );
4106 sortedSimplices[0] = simplices[0];
4108 for ( size_t i = 1; i < simplices.size(); ++i )
4110 for ( size_t j = 1; j < simplices.size(); ++j )
4111 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4113 sortedSimplices[i] = simplices[j];
4118 if ( nbFound == simplices.size() - 1 )
4119 simplices.swap( sortedSimplices );
4122 //================================================================================
4124 * \brief DEBUG. Create groups contating temorary data of _LayerEdge's
4126 //================================================================================
4128 void _ViscousBuilder::makeGroupOfLE()
4131 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4133 if ( _sdVec[i]._n2eMap.empty() ) continue;
4135 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4136 TNode2Edge::iterator n2e;
4137 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4139 _LayerEdge* le = n2e->second;
4140 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4141 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4142 // << ", " << le->_nodes[iN]->GetID() <<"])");
4144 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4145 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4150 dumpFunction( SMESH_Comment("makeNormals") << i );
4151 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4153 _LayerEdge* edge = n2e->second;
4154 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4155 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4156 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4157 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4161 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4162 dumpCmd( "faceId1 = mesh.NbElements()" );
4163 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4164 for ( ; fExp.More(); fExp.Next() )
4166 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4168 if ( sm->NbElements() == 0 ) continue;
4169 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4170 while ( fIt->more())
4172 const SMDS_MeshElement* e = fIt->next();
4173 SMESH_Comment cmd("mesh.AddFace([");
4174 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4175 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4180 dumpCmd( "faceId2 = mesh.NbElements()" );
4181 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4182 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4183 << "'%s-%s' % (faceId1+1, faceId2))");
4189 //================================================================================
4191 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4193 //================================================================================
4195 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4197 data._geomSize = Precision::Infinite();
4198 double intersecDist;
4199 const SMDS_MeshElement* face;
4200 SMESH_MesherHelper helper( *_mesh );
4202 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4203 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4204 data._proxyMesh->GetFaces( data._solid )));
4206 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4208 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4209 if ( eos._edges.empty() )
4211 // get neighbor faces intersection with which should not be considered since
4212 // collisions are avoided by means of smoothing
4213 set< TGeomID > neighborFaces;
4214 if ( eos._hyp.ToSmooth() )
4216 SMESH_subMeshIteratorPtr subIt =
4217 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4218 while ( subIt->more() )
4220 SMESH_subMesh* sm = subIt->next();
4221 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4222 while ( const TopoDS_Shape* face = fIt->next() )
4223 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4226 // find intersections
4227 double thinkness = eos._hyp.GetTotalThickness();
4228 for ( size_t i = 0; i < eos._edges.size(); ++i )
4230 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
4231 eos._edges[i]->_maxLen = thinkness;
4232 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4233 if ( intersecDist > 0 && face )
4235 data._geomSize = Min( data._geomSize, intersecDist );
4236 if ( !neighborFaces.count( face->getshapeId() ))
4237 eos._edges[i]->_maxLen = Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. ));
4243 //================================================================================
4245 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4247 //================================================================================
4249 bool _ViscousBuilder::inflate(_SolidData& data)
4251 SMESH_MesherHelper helper( *_mesh );
4253 // Limit inflation step size by geometry size found by itersecting
4254 // normals of _LayerEdge's with mesh faces
4255 if ( data._stepSize > 0.3 * data._geomSize )
4256 limitStepSize( data, 0.3 * data._geomSize );
4258 const double tgtThick = data._maxThickness;
4259 if ( data._stepSize > data._minThickness )
4260 limitStepSize( data, data._minThickness );
4262 if ( data._stepSize < 1. )
4263 data._epsilon = data._stepSize * 1e-7;
4265 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4267 findCollisionEdges( data, helper );
4269 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4270 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4271 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4272 data._edgesOnShape[i]._edges.size() > 0 &&
4273 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4275 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4276 data._edgesOnShape[i]._edges[0]->Block( data );
4279 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4281 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4282 int nbSteps = 0, nbRepeats = 0;
4283 while ( avgThick < 0.99 )
4285 // new target length
4286 double prevThick = curThick;
4287 curThick += data._stepSize;
4288 if ( curThick > tgtThick )
4290 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4294 double stepSize = curThick - prevThick;
4295 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4297 // Elongate _LayerEdge's
4298 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4299 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4301 _EdgesOnShape& eos = data._edgesOnShape[iS];
4302 if ( eos._edges.empty() ) continue;
4304 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4305 for ( size_t i = 0; i < eos._edges.size(); ++i )
4307 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4312 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4315 // Improve and check quality
4316 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4320 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4321 debugMsg("NOT INVALIDATED STEP!");
4322 return error("Smoothing failed", data._index);
4324 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4325 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4327 _EdgesOnShape& eos = data._edgesOnShape[iS];
4328 for ( size_t i = 0; i < eos._edges.size(); ++i )
4329 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4333 break; // no more inflating possible
4337 // Evaluate achieved thickness
4339 int nbActiveEdges = 0;
4340 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4342 _EdgesOnShape& eos = data._edgesOnShape[iS];
4343 if ( eos._edges.empty() ) continue;
4345 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4346 for ( size_t i = 0; i < eos._edges.size(); ++i )
4348 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4349 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4352 avgThick /= data._n2eMap.size();
4353 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4355 #ifdef BLOCK_INFLATION
4356 if ( nbActiveEdges == 0 )
4358 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4362 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4364 debugMsg( "-- Stop inflation since "
4365 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4366 << tgtThick * avgThick << " ) * " << safeFactor );
4371 limitStepSize( data, 0.25 * distToIntersection );
4372 if ( data._stepSizeNodes[0] )
4373 data._stepSize = data._stepSizeCoeff *
4374 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4376 } // while ( avgThick < 0.99 )
4379 return error("failed at the very first inflation step", data._index);
4381 if ( avgThick < 0.99 )
4383 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4385 data._proxyMesh->_warning.reset
4386 ( new SMESH_ComputeError (COMPERR_WARNING,
4387 SMESH_Comment("Thickness ") << tgtThick <<
4388 " of viscous layers not reached,"
4389 " average reached thickness is " << avgThick*tgtThick));
4393 // Restore position of src nodes moved by inflation on _noShrinkShapes
4394 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
4395 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4397 _EdgesOnShape& eos = data._edgesOnShape[iS];
4398 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
4399 for ( size_t i = 0; i < eos._edges.size(); ++i )
4401 restoreNoShrink( *eos._edges[ i ] );
4406 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
4409 //================================================================================
4411 * \brief Improve quality of layer inner surface and check intersection
4413 //================================================================================
4415 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
4417 double & distToIntersection)
4419 if ( data._nbShapesToSmooth == 0 )
4420 return true; // no shapes needing smoothing
4422 bool moved, improved;
4424 vector< _LayerEdge* > movedEdges, badEdges;
4425 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
4426 vector< bool > isConcaveFace;
4428 SMESH_MesherHelper helper(*_mesh);
4429 Handle(ShapeAnalysis_Surface) surface;
4432 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
4434 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
4436 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4438 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4439 if ( !eos._toSmooth ||
4440 eos.ShapeType() != shapeType ||
4441 eos._edges.empty() )
4444 // already smoothed?
4445 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
4446 // if ( !toSmooth ) continue;
4448 if ( !eos._hyp.ToSmooth() )
4450 // smooth disabled by the user; check validy only
4451 if ( !isFace ) continue;
4452 for ( size_t i = 0; i < eos._edges.size(); ++i )
4454 _LayerEdge* edge = eos._edges[i];
4455 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
4456 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
4458 debugMsg( "-- Stop inflation. Bad simplex ("
4459 << " "<< edge->_nodes[0]->GetID()
4460 << " "<< edge->_nodes.back()->GetID()
4461 << " "<< edge->_simplices[iF]._nPrev->GetID()
4462 << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
4466 continue; // goto the next EDGE or FACE
4470 if ( eos.SWOLType() == TopAbs_FACE )
4472 if ( !F.IsSame( eos._sWOL )) {
4473 F = TopoDS::Face( eos._sWOL );
4474 helper.SetSubShape( F );
4475 surface = helper.GetSurface( F );
4480 F.Nullify(); surface.Nullify();
4482 const TGeomID sInd = eos._shapeID;
4484 // perform smoothing
4486 if ( eos.ShapeType() == TopAbs_EDGE )
4488 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
4490 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
4492 // smooth on EDGE's (normally we should not get here)
4496 for ( size_t i = 0; i < eos._edges.size(); ++i )
4498 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
4500 dumpCmd( SMESH_Comment("# end step ")<<step);
4502 while ( moved && step++ < 5 );
4507 else // smooth on FACE
4510 eosC1.push_back( & eos );
4511 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
4514 isConcaveFace.resize( eosC1.size() );
4515 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4517 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
4518 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4519 for ( size_t i = 0; i < edges.size(); ++i )
4520 if ( edges[i]->Is( _LayerEdge::MOVED ) ||
4521 edges[i]->Is( _LayerEdge::NEAR_BOUNDARY ))
4522 movedEdges.push_back( edges[i] );
4524 makeOffsetSurface( *eosC1[ iEOS ], helper );
4527 int step = 0, stepLimit = 5, nbBad = 0;
4528 while (( ++step <= stepLimit ) || improved )
4530 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
4531 <<"_InfStep"<<infStep<<"_"<<step); // debug
4532 int oldBadNb = nbBad;
4535 #ifdef INCREMENTAL_SMOOTH
4536 bool findBest = false; // ( step == stepLimit );
4537 for ( size_t i = 0; i < movedEdges.size(); ++i )
4539 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
4540 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
4541 badEdges.push_back( movedEdges[i] );
4544 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
4545 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4547 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4548 for ( size_t i = 0; i < edges.size(); ++i )
4550 edges[i]->Unset( _LayerEdge::SMOOTHED );
4551 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
4552 badEdges.push_back( eos._edges[i] );
4556 nbBad = badEdges.size();
4559 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
4561 if ( !badEdges.empty() && step >= stepLimit / 2 )
4563 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
4566 // resolve hard smoothing situation around concave VERTEXes
4567 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4569 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
4570 for ( size_t i = 0; i < eosCoVe.size(); ++i )
4571 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
4574 // look for the best smooth of _LayerEdge's neighboring badEdges
4576 for ( size_t i = 0; i < badEdges.size(); ++i )
4578 _LayerEdge* ledge = badEdges[i];
4579 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
4581 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
4582 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
4584 ledge->Unset( _LayerEdge::SMOOTHED );
4585 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
4587 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
4590 if ( nbBad == oldBadNb &&
4592 step < stepLimit ) // smooth w/o chech of validity
4595 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
4596 <<"_InfStep"<<infStep<<"_"<<step); // debug
4597 for ( size_t i = 0; i < movedEdges.size(); ++i )
4599 movedEdges[i]->SmoothWoCheck();
4601 if ( stepLimit < 9 )
4605 improved = ( nbBad < oldBadNb );
4609 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
4610 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4612 putOnOffsetSurface( *eosC1[ iEOS ], infStep, step, /*moveAll=*/step == 1 );
4615 } // smoothing steps
4617 // project -- to prevent intersections or fix bad simplices
4618 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4620 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
4621 putOnOffsetSurface( *eosC1[ iEOS ], infStep );
4624 if ( !badEdges.empty() )
4627 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4629 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
4631 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
4633 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
4634 edge->CheckNeiborsOnBoundary( & badEdges );
4637 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4638 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4639 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4640 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4642 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
4643 << " "<< tgtXYZ._node->GetID()
4644 << " "<< edge->_simplices[j]._nPrev->GetID()
4645 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4646 badEdges.push_back( edge );
4653 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4654 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4660 } // // smooth on FACE's
4662 } // smooth on [ EDGEs, FACEs ]
4664 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
4666 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4668 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4669 if ( eos.ShapeType() == TopAbs_FACE ||
4670 eos._edges.empty() ||
4671 !eos._sWOL.IsNull() )
4675 for ( size_t i = 0; i < eos._edges.size(); ++i )
4677 _LayerEdge* edge = eos._edges[i];
4678 if ( edge->_nodes.size() < 2 ) continue;
4679 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4680 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4681 //const gp_XYZ& prevXYZ = edge->PrevPos();
4682 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4683 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4685 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
4686 << " "<< tgtXYZ._node->GetID()
4687 << " "<< edge->_simplices[j]._nPrev->GetID()
4688 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4689 badEdges.push_back( edge );
4694 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4696 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4702 // Check if the last segments of _LayerEdge intersects 2D elements;
4703 // checked elements are either temporary faces or faces on surfaces w/o the layers
4705 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4706 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4707 data._proxyMesh->GetFaces( data._solid )) );
4709 #ifdef BLOCK_INFLATION
4710 const bool toBlockInfaltion = true;
4712 const bool toBlockInfaltion = false;
4714 distToIntersection = Precision::Infinite();
4716 const SMDS_MeshElement* intFace = 0;
4717 const SMDS_MeshElement* closestFace = 0;
4719 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4721 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4722 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
4724 for ( size_t i = 0; i < eos._edges.size(); ++i )
4726 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
4727 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
4729 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
4732 // commented due to "Illegal hash-positionPosition" error in NETGEN
4733 // on Debian60 on viscous_layers_01/B2 case
4734 // Collision; try to deflate _LayerEdge's causing it
4735 // badEdges.clear();
4736 // badEdges.push_back( eos._edges[i] );
4737 // eosC1[0] = & eos;
4738 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4742 // badEdges.clear();
4743 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
4745 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
4747 // const SMDS_MeshElement* srcFace =
4748 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
4749 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
4750 // while ( nIt->more() )
4752 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
4753 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
4754 // if ( n2e != data._n2eMap.end() )
4755 // badEdges.push_back( n2e->second );
4758 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4763 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
4770 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
4775 const bool isShorterDist = ( distToIntersection > dist );
4776 if ( toBlockInfaltion || isShorterDist )
4778 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
4779 // lying on this _ConvexFace
4780 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
4781 if ( convFace->_subIdToEOS.count ( eos._shapeID ))
4784 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
4785 // ( avoid limiting the thickness on the case of issue 22576)
4786 if ( intFace->getshapeId() == eos._shapeID )
4789 // ignore intersection with intFace of an adjacent FACE
4792 bool toIgnore = false;
4793 if ( eos._edges[i]->Is( _LayerEdge::TO_SMOOTH ))
4795 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
4796 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
4798 TopExp_Explorer edge( eos._shape, TopAbs_EDGE );
4799 for ( ; !toIgnore && edge.More(); edge.Next() )
4800 // is adjacent - has a common EDGE
4801 toIgnore = ( helper.IsSubShape( edge.Current(), S ));
4803 if ( toIgnore ) // check angle between normals
4806 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
4807 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
4811 if ( !toIgnore ) // check if the edge is a neighbor of intFace
4813 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
4815 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
4816 toIgnore = ( nInd >= 0 );
4823 // intersection not ignored
4825 if ( toBlockInfaltion &&
4826 dist < ( eos._edges[i]->_len * theThickToIntersection ))
4828 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
4829 eos._edges[i]->Block( data ); // not to inflate
4831 if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
4833 // block _LayerEdge's, on top of which intFace is
4834 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
4836 const SMDS_MeshElement* srcFace =
4837 eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
4838 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
4839 while ( nIt->more() )
4841 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
4842 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
4843 if ( n2e != data._n2eMap.end() )
4844 n2e->second->Block( data );
4850 if ( isShorterDist )
4852 distToIntersection = dist;
4854 closestFace = intFace;
4857 } // if ( toBlockInfaltion || isShorterDist )
4858 } // loop on eos._edges
4859 } // loop on data._edgesOnShape
4864 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
4865 cout << "Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
4866 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
4867 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
4868 << ") distance = " << distToIntersection<< endl;
4875 //================================================================================
4877 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
4878 * \param [in,out] badSmooEdges - _LayerEdge's to fix
4879 * \return int - resulting nb of bad _LayerEdge's
4881 //================================================================================
4883 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
4884 SMESH_MesherHelper& helper,
4885 vector< _LayerEdge* >& badSmooEdges,
4886 vector< _EdgesOnShape* >& eosC1,
4889 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
4891 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
4893 //data.UnmarkEdges();
4896 //size_t iniNbBad = badSmooEdges.size();
4897 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
4899 _LayerEdge* edge = badSmooEdges[i];
4900 if ( edge->NbSteps() < 2 /*|| edge->Is( _LayerEdge::MARKED )*/)
4903 _EdgesOnShape* eos = data.GetShapeEdges( edge );
4904 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
4905 edge->Block( data );
4906 //edge->Set( _LayerEdge::MARKED );
4908 // look for _LayerEdge's of bad _simplices
4909 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4910 const gp_XYZ& prevXYZ1 = edge->PrevCheckPos();
4911 const gp_XYZ& prevXYZ2 = edge->PrevPos();
4912 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4914 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) &&
4915 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol )))
4917 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
4918 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
4919 badSmooEdges.push_back( edge->_neibors[iN] );
4922 if ( eos->ShapeType() == TopAbs_VERTEX )
4924 // re-smooth on analytical EDGEs
4925 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
4926 while ( const TopoDS_Shape* e = eIt->next() )
4927 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
4928 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
4930 TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
4931 if ( eoe->SWOLType() == TopAbs_FACE ) {
4932 F = TopoDS::Face( eoe->_sWOL );
4933 surface = helper.GetSurface( F );
4935 eoe->_edgeSmoother->Perform( data, surface, F, helper );
4939 } // loop on badSmooEdges
4942 // check result of invalidation
4945 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4947 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
4949 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
4950 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
4951 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
4952 const gp_XYZ& prevXYZ = edge->PrevCheckPos();
4953 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
4954 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
4957 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
4958 << " "<< tgtXYZ._node->GetID()
4959 << " "<< edge->_simplices[j]._nPrev->GetID()
4960 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
4969 //================================================================================
4971 * \brief Create an offset surface
4973 //================================================================================
4975 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
4977 if ( eos._offsetSurf.IsNull() ||
4978 eos._edgeForOffset == 0 ||
4979 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
4982 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
4985 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
4986 gp_Pnt2d uv = baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
4987 double offset = baseSurface->Gap();
4989 eos._offsetSurf.Nullify();
4993 BRepOffsetAPI_MakeOffsetShape offsetMaker( eos._shape, -offset, Precision::Confusion() );
4994 if ( !offsetMaker.IsDone() ) return;
4996 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
4997 if ( !fExp.More() ) return;
4999 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5000 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5001 if ( surf.IsNull() ) return;
5003 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5005 catch ( Standard_Failure )
5010 //================================================================================
5012 * \brief Put nodes of a curved FACE to its offset surface
5014 //================================================================================
5016 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5021 if ( eos._offsetSurf.IsNull() ||
5022 eos.ShapeType() != TopAbs_FACE ||
5023 eos._edgeForOffset == 0 ||
5024 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5027 double preci = BRep_Tool::Tolerance( TopoDS::Face( eos._shape )), vol;
5028 for ( size_t i = 0; i < eos._edges.size(); ++i )
5030 _LayerEdge* edge = eos._edges[i];
5031 edge->Unset( _LayerEdge::MARKED );
5032 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5034 if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5037 int nbBlockedAround = 0;
5038 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5039 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5040 if ( nbBlockedAround > 1 )
5043 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5044 gp_Pnt2d uv = eos._offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5045 if ( eos._offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5046 edge->_curvature->_uv = uv;
5047 if ( eos._offsetSurf->Gap() < 10 * preci ) continue; // same pos
5049 gp_XYZ newP = eos._offsetSurf->Value( uv ).XYZ();
5050 gp_XYZ prevP = edge->PrevCheckPos();
5053 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5055 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5059 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5060 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5061 edge->_pos.back() = newP;
5063 edge->Set( _LayerEdge::MARKED );
5068 // dumpMove() for debug
5070 for ( ; i < eos._edges.size(); ++i )
5071 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5073 if ( i < eos._edges.size() )
5075 dumpFunction(SMESH_Comment("putOnOffsetSurface_F") << eos._shapeID
5076 << "_InfStep" << infStep << "_" << smooStep );
5077 for ( ; i < eos._edges.size(); ++i )
5079 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5080 dumpMove( eos._edges[i]->_nodes.back() );
5087 //================================================================================
5089 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5090 * _LayerEdge's to be in a consequent order
5092 //================================================================================
5094 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5096 SMESH_MesherHelper& helper)
5098 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5100 TopLoc_Location loc; double f,l;
5102 Handle(Geom_Line) line;
5103 Handle(Geom_Circle) circle;
5104 bool isLine, isCirc;
5105 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5107 // check if the EDGE is a line
5108 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5109 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5110 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5112 line = Handle(Geom_Line)::DownCast( curve );
5113 circle = Handle(Geom_Circle)::DownCast( curve );
5114 isLine = (!line.IsNull());
5115 isCirc = (!circle.IsNull());
5117 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5119 isLine = SMESH_Algo::IsStraight( E );
5122 line = new Geom_Line( gp::OX() ); // only type does matter
5124 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5129 else //////////////////////////////////////////////////////////////////////// 2D case
5131 if ( !eos._isRegularSWOL ) // 23190
5134 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5136 // check if the EDGE is a line
5137 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5138 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5139 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5141 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5142 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5143 isLine = (!line2d.IsNull());
5144 isCirc = (!circle2d.IsNull());
5146 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5149 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5150 while ( nIt->more() )
5151 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5152 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5154 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5155 for ( int i = 0; i < 2 && !isLine; ++i )
5156 isLine = ( size.Coord( i+1 ) <= lineTol );
5158 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5164 line = new Geom_Line( gp::OX() ); // only type does matter
5168 gp_Pnt2d p = circle2d->Location();
5169 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
5170 circle = new Geom_Circle( ax, 1.); // only center position does matter
5179 return Handle(Geom_Curve)();
5182 //================================================================================
5184 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
5186 //================================================================================
5188 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
5189 Handle(ShapeAnalysis_Surface)& surface,
5190 const TopoDS_Face& F,
5191 SMESH_MesherHelper& helper)
5193 if ( !isAnalytic() ) return false;
5195 const size_t iFrom = 0, iTo = _eos._edges.size();
5197 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
5199 if ( F.IsNull() ) // 3D
5201 SMESH_TNodeXYZ p0 ( _eos._edges[iFrom]->_2neibors->tgtNode(0) );
5202 SMESH_TNodeXYZ p1 ( _eos._edges[iTo-1]->_2neibors->tgtNode(1) );
5203 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
5204 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
5206 for ( size_t i = iFrom; i < iTo; ++i )
5208 _LayerEdge* edge = _eos._edges[i];
5209 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
5210 newPos = p0 * ( 1. - _leParams[i] ) + p1 * _leParams[i];
5212 if ( _eos._edges[i]->Is( _LayerEdge::NORMAL_UPDATED ))
5214 gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
5215 gp_XYZ lineDir = pSrc1 - pSrc0;
5216 double shift = ( lineDir * ( newPos - pSrc0 ) -
5217 lineDir * ( curPos - pSrc0 ));
5218 newPos = curPos + lineDir * shift / lineDir.SquareModulus();
5220 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED ))
5222 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
5223 double curThick = pSrc.SquareDistance( tgtNode );
5224 double newThink = ( pSrc - newPos ).SquareModulus();
5225 if ( newThink > curThick )
5228 edge->_pos.back() = newPos;
5229 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5230 dumpMove( tgtNode );
5235 _LayerEdge* e0 = getLEdgeOnV( 0 );
5236 _LayerEdge* e1 = getLEdgeOnV( 1 );
5237 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ));
5238 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ));
5239 if ( e0->_nodes.back() == e1->_nodes.back() ) // closed edge
5241 int iPeriodic = helper.GetPeriodicIndex();
5242 if ( iPeriodic == 1 || iPeriodic == 2 )
5244 uv1.SetCoord( iPeriodic, helper.GetOtherParam( uv1.Coord( iPeriodic )));
5245 if ( uv0.Coord( iPeriodic ) > uv1.Coord( iPeriodic ))
5246 std::swap( uv0, uv1 );
5249 const gp_XY rangeUV = uv1 - uv0;
5250 for ( size_t i = iFrom; i < iTo; ++i )
5252 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5253 gp_XY newUV = uv0 + _leParams[i] * rangeUV;
5254 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
5256 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
5257 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5258 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5259 dumpMove( tgtNode );
5261 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
5262 pos->SetUParameter( newUV.X() );
5263 pos->SetVParameter( newUV.Y() );
5269 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
5271 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
5272 gp_Pnt center3D = circle->Location();
5274 if ( F.IsNull() ) // 3D
5276 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
5277 return true; // closed EDGE - nothing to do
5279 // circle is a real curve of EDGE
5280 gp_Circ circ = circle->Circ();
5282 // new center is shifted along its axis
5283 const gp_Dir& axis = circ.Axis().Direction();
5284 _LayerEdge* e0 = getLEdgeOnV(0);
5285 _LayerEdge* e1 = getLEdgeOnV(1);
5286 SMESH_TNodeXYZ p0 = e0->_nodes.back();
5287 SMESH_TNodeXYZ p1 = e1->_nodes.back();
5288 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
5289 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
5290 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
5292 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
5294 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
5295 gp_Circ newCirc( newAxis, newRadius );
5296 gp_Vec vecC1 ( newCenter, p1 );
5298 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
5302 for ( size_t i = iFrom; i < iTo; ++i )
5304 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5305 double u = uLast * _leParams[i];
5306 gp_Pnt p = ElCLib::Value( u, newCirc );
5307 _eos._edges[i]->_pos.back() = p.XYZ();
5309 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5310 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
5311 dumpMove( tgtNode );
5317 const gp_XY center( center3D.X(), center3D.Y() );
5319 _LayerEdge* e0 = getLEdgeOnV(0);
5320 _LayerEdge* eM = _eos._edges[ 0 ];
5321 _LayerEdge* e1 = getLEdgeOnV(1);
5322 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
5323 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
5324 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
5325 gp_Vec2d vec0( center, uv0 );
5326 gp_Vec2d vecM( center, uvM );
5327 gp_Vec2d vec1( center, uv1 );
5328 double uLast = vec0.Angle( vec1 ); // -PI - +PI
5329 double uMidl = vec0.Angle( vecM );
5330 if ( uLast * uMidl <= 0. )
5331 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
5332 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
5334 gp_Ax2d axis( center, vec0 );
5335 gp_Circ2d circ( axis, radius );
5336 for ( size_t i = iFrom; i < iTo; ++i )
5338 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5339 double newU = uLast * _leParams[i];
5340 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
5341 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
5343 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
5344 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5345 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5346 dumpMove( tgtNode );
5348 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
5349 pos->SetUParameter( newUV.X() );
5350 pos->SetVParameter( newUV.Y() );
5359 //================================================================================
5361 * \brief smooth _LayerEdge's on a an EDGE
5363 //================================================================================
5365 bool _Smoother1D::smoothComplexEdge( _SolidData& data,
5366 Handle(ShapeAnalysis_Surface)& surface,
5367 const TopoDS_Face& F,
5368 SMESH_MesherHelper& helper)
5370 if ( _offPoints.empty() )
5373 // move _offPoints to positions along normals of _LayerEdge's
5375 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
5376 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED )) setNormalOnV( 0, helper );
5377 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED )) setNormalOnV( 1, helper );
5378 _leOnV[0]._len = e[0]->_len;
5379 _leOnV[1]._len = e[1]->_len;
5380 for ( size_t i = 0; i < _offPoints.size(); i++ )
5382 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
5383 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
5384 const double w0 = _offPoints[i]._2edges._wgt[0];
5385 const double w1 = _offPoints[i]._2edges._wgt[1];
5386 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
5387 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
5388 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
5390 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
5391 _offPoints[i]._len = avgLen;
5395 if ( !surface.IsNull() ) // project _offPoints to the FACE
5397 fTol = 100 * BRep_Tool::Tolerance( F );
5398 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
5400 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
5401 //if ( surface->Gap() < 0.5 * segLen )
5402 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
5404 for ( size_t i = 1; i < _offPoints.size(); ++i )
5406 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
5407 //if ( surface->Gap() < 0.5 * segLen )
5408 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
5412 // project tgt nodes of extreme _LayerEdge's to the offset segments
5414 gp_Pnt pExtreme[2], pProj[2];
5415 for ( int is2nd = 0; is2nd < 2; ++is2nd )
5417 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
5418 int i = _iSeg[ is2nd ];
5419 int di = is2nd ? -1 : +1;
5420 bool projected = false;
5421 double uOnSeg, uOnSegDiff, uOnSegBestDiff = Precision::Infinite(), uOnSegPrevDiff = 0;
5424 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
5425 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
5426 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude();
5427 uOnSegDiff = Abs( uOnSeg - 0.5 );
5428 projected = ( uOnSegDiff <= 0.5 );
5429 if ( uOnSegDiff < uOnSegBestDiff )
5432 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
5433 uOnSegBestDiff = uOnSegDiff;
5435 else if ( uOnSegDiff > uOnSegPrevDiff )
5437 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
5440 uOnSegPrevDiff = uOnSegDiff;
5443 while ( !projected &&
5444 i >= 0 && i+1 < (int)_offPoints.size() );
5448 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
5451 _iSeg[1] = _offPoints.size()-2;
5452 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
5457 if ( _iSeg[0] > _iSeg[1] )
5459 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
5463 // compute normalized length of the offset segments located between the projections
5465 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
5466 vector< double > len( nbSeg + 1 );
5468 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
5469 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
5471 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
5473 len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
5475 double d0 = pProj[0].Distance( pExtreme[0]);
5476 double d1 = pProj[1].Distance( pExtreme[1]);
5477 double fullLen = len.back() - d0 - d1;
5478 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
5479 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
5481 // temporary replace extreme _offPoints by pExtreme
5482 gp_XYZ op[2] = { _offPoints[ _iSeg[0] ]._xyz,
5483 _offPoints[ _iSeg[1]+1 ]._xyz };
5484 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
5485 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
5487 // distribute tgt nodes of _LayerEdge's between the projections
5490 for ( size_t i = 0; i < _eos._edges.size(); ++i )
5492 if ( _eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5493 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
5495 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
5496 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
5497 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
5499 if ( surface.IsNull() )
5501 _eos._edges[i]->_pos.back() = p;
5503 else // project a new node position to a FACE
5505 gp_Pnt2d uv ( _eos._edges[i]->_pos.back().X(), _eos._edges[i]->_pos.back().Y() );
5506 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
5508 p = surface->Value( uv2 ).XYZ();
5509 _eos._edges[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
5511 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
5512 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
5513 dumpMove( tgtNode );
5516 _offPoints[ _iSeg[0] ]._xyz = op[0];
5517 _offPoints[ _iSeg[1]+1 ]._xyz = op[1];
5522 //================================================================================
5524 * \brief Prepare for smoothing
5526 //================================================================================
5528 void _Smoother1D::prepare(_SolidData& data)
5530 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
5531 _curveLen = SMESH_Algo::EdgeLength( E );
5533 // sort _LayerEdge's by position on the EDGE
5534 data.SortOnEdge( E, _eos._edges );
5536 SMESH_MesherHelper& helper = data.GetHelper();
5538 // compute normalized param of _eos._edges on EDGE
5539 _leParams.resize( _eos._edges.size() + 1 );
5541 double curLen, prevLen = _leParams[0] = 1.0;
5542 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
5544 for ( size_t i = 0; i < _eos._edges.size(); ++i )
5546 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
5547 //curLen = prevLen * _eos._edges[i]->_2neibors->_wgt[1] / _eos._edges[i]->_2neibors->_wgt[0];
5548 curLen = p.Distance( pPrev );
5549 _leParams[i+1] = _leParams[i] + curLen;
5553 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
5554 for ( size_t i = 0; i < _leParams.size()-1; ++i )
5555 _leParams[i] = _leParams[i+1] / fullLen;
5558 // find intersection of neighbor _LayerEdge's to limit _maxLen
5559 // according to EDGE curvature (IPAL52648)
5560 _LayerEdge* e0 = _eos._edges[0];
5561 for ( size_t i = 1; i < _eos._edges.size(); ++i )
5563 _LayerEdge* ei = _eos._edges[i];
5564 gp_XYZ plnNorm = e0->_normal ^ ei->_normal;
5565 gp_XYZ perp0 = e0->_normal ^ plnNorm;
5566 double dot0i = perp0 * ei->_normal;
5567 if ( Abs( dot0i ) > std::numeric_limits<double>::min() )
5569 SMESH_TNodeXYZ srci( ei->_nodes[0] ), src0( e0->_nodes[0] );
5570 double ui = ( perp0 * ( src0 - srci )) / dot0i;
5573 ei->_maxLen = Min( ei->_maxLen, 0.75 * ui / ei->_lenFactor );
5574 if ( ei->_maxLen < ei->_len )
5576 ei->InvalidateStep( ei->NbSteps(), _eos, /*restoreLength=*/true );
5577 ei->SetNewLength( ei->_maxLen, _eos, helper );
5580 gp_Pnt pi = srci + ei->_normal * ui;
5581 double u0 = pi.Distance( src0 );
5582 e0->_maxLen = Min( e0->_maxLen, 0.75 * u0 / e0->_lenFactor );
5583 if ( e0->_maxLen < e0->_len )
5585 e0->InvalidateStep( e0->NbSteps(), _eos, /*restoreLength=*/true );
5586 e0->SetNewLength( e0->_maxLen, _eos, helper );
5597 // divide E to have offset segments with low deflection
5598 BRepAdaptor_Curve c3dAdaptor( E );
5599 const double curDeflect = 0.1; //0.3; // 0.01; // Curvature deflection
5600 const double angDeflect = 0.1; //0.2; // 0.09; // Angular deflection
5601 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
5602 if ( discret.NbPoints() <= 2 )
5604 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
5608 const double edgeLen = SMESH_Algo::EdgeLength( E );
5609 const double u0 = c3dAdaptor.FirstParameter();
5610 _offPoints.resize( discret.NbPoints() );
5611 for ( size_t i = 0; i < _offPoints.size(); i++ )
5613 _offPoints[i]._xyz = discret.Value( i+1 ).XYZ();
5614 // use OffPnt::_len to TEMPORARY store normalized param of an offset point
5615 double u = discret.Parameter( i+1 );
5616 _offPoints[i]._len = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / edgeLen;
5619 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
5622 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
5623 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
5624 _2NearEdges tmp2edges;
5625 tmp2edges._edges[1] = _eos._edges[0];
5626 _leOnV[0]._2neibors = & tmp2edges;
5627 _leOnV[0]._nodes = leOnV[0]->_nodes;
5628 _leOnV[1]._nodes = leOnV[1]->_nodes;
5629 _LayerEdge* eNext, *ePrev = & _leOnV[0];
5630 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
5632 // find _LayerEdge's located before and after an offset point
5633 // (_eos._edges[ iLE ] is next after ePrev)
5634 while ( iLE < _eos._edges.size() && _offPoints[i]._len > _leParams[ iLE ] )
5635 ePrev = _eos._edges[ iLE++ ];
5636 eNext = ePrev->_2neibors->_edges[1];
5638 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
5639 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
5640 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
5641 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
5644 int iLBO = _offPoints.size() - 2; // last but one
5645 _offPoints[iLBO]._2edges._edges[1] = & _leOnV[1];
5648 // TopoDS_Face face[2]; // FACEs sharing the EDGE
5649 // PShapeIteratorPtr fIt = helper.GetAncestors( _eos._shape, *helper.GetMesh(), TopAbs_FACE );
5650 // while ( const TopoDS_Shape* F = fIt->next() )
5652 // TGeomID fID = helper.GetMeshDS()->ShapeToIndex( *F );
5653 // if ( ! data._ignoreFaceIds.count( fID ))
5654 // face[ !face[0].IsNull() ] = *F;
5656 // if ( face[0].IsNull() ) return;
5657 // if ( face[1].IsNull() ) face[1] = face[0];
5661 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
5663 setNormalOnV( 0, data.GetHelper() );
5664 setNormalOnV( 1, data.GetHelper() );
5665 _leOnV[ 0 ]._len = 0;
5666 _leOnV[ 1 ]._len = 0;
5667 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
5668 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
5671 _iSeg[1] = _offPoints.size()-2;
5673 // initialize OffPnt::_len
5674 for ( size_t i = 0; i < _offPoints.size(); ++i )
5675 _offPoints[i]._len = 0;
5677 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
5679 _leOnV[0]._len = leOnV[0]->_len;
5680 _leOnV[1]._len = leOnV[1]->_len;
5681 for ( size_t i = 0; i < _offPoints.size(); i++ )
5683 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
5684 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
5685 const double w0 = _offPoints[i]._2edges._wgt[0];
5686 const double w1 = _offPoints[i]._2edges._wgt[1];
5687 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
5688 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
5689 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
5690 _offPoints[i]._xyz = avgXYZ;
5691 _offPoints[i]._len = avgLen;
5696 //================================================================================
5698 * \brief set _normal of _leOnV[is2nd] to be normal to the EDGE
5700 //================================================================================
5702 void _Smoother1D::setNormalOnV( const bool is2nd,
5703 SMESH_MesherHelper& helper)
5705 _LayerEdge* leOnV = getLEdgeOnV( is2nd );
5706 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
5707 TopoDS_Shape V = helper.GetSubShapeByNode( leOnV->_nodes[0], helper.GetMeshDS() );
5708 gp_XYZ eDir = getEdgeDir( E, TopoDS::Vertex( V ));
5709 gp_XYZ cross = leOnV->_normal ^ eDir;
5710 gp_XYZ norm = eDir ^ cross;
5711 double size = norm.Modulus();
5713 _leOnV[ is2nd ]._normal = norm / size;
5716 //================================================================================
5718 * \brief Sort _LayerEdge's by a parameter on a given EDGE
5720 //================================================================================
5722 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
5723 vector< _LayerEdge* >& edges)
5725 map< double, _LayerEdge* > u2edge;
5726 for ( size_t i = 0; i < edges.size(); ++i )
5727 u2edge.insert( u2edge.end(),
5728 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
5730 ASSERT( u2edge.size() == edges.size() );
5731 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
5732 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
5733 edges[i] = u2e->second;
5735 Sort2NeiborsOnEdge( edges );
5738 //================================================================================
5740 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
5742 //================================================================================
5744 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
5746 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
5748 for ( size_t i = 0; i < edges.size()-1; ++i )
5749 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
5750 edges[i]->_2neibors->reverse();
5752 const size_t iLast = edges.size() - 1;
5753 if ( edges.size() > 1 &&
5754 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
5755 edges[iLast]->_2neibors->reverse();
5758 //================================================================================
5760 * \brief Return _EdgesOnShape* corresponding to the shape
5762 //================================================================================
5764 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
5766 if ( shapeID < (int)_edgesOnShape.size() &&
5767 _edgesOnShape[ shapeID ]._shapeID == shapeID )
5768 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
5770 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
5771 if ( _edgesOnShape[i]._shapeID == shapeID )
5772 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
5777 //================================================================================
5779 * \brief Return _EdgesOnShape* corresponding to the shape
5781 //================================================================================
5783 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
5785 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
5786 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
5789 //================================================================================
5791 * \brief Prepare data of the _LayerEdge for smoothing on FACE
5793 //================================================================================
5795 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
5797 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
5799 set< TGeomID > vertices;
5801 if ( eos->ShapeType() == TopAbs_FACE )
5803 // check FACE concavity and get concave VERTEXes
5804 F = TopoDS::Face( eos->_shape );
5805 if ( isConcave( F, helper, &vertices ))
5806 _concaveFaces.insert( eos->_shapeID );
5808 // set eos._eosConcaVer
5809 eos->_eosConcaVer.clear();
5810 eos->_eosConcaVer.reserve( vertices.size() );
5811 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
5813 _EdgesOnShape* eov = GetShapeEdges( *v );
5814 if ( eov && eov->_edges.size() == 1 )
5816 eos->_eosConcaVer.push_back( eov );
5817 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
5818 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
5822 // SetSmooLen() to _LayerEdge's on FACE
5823 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5825 eos->_edges[i]->SetSmooLen( Precision::Infinite() );
5827 SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
5828 while ( smIt->more() ) // loop on sub-shapes of the FACE
5830 _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
5831 if ( !eoe ) continue;
5833 vector<_LayerEdge*>& eE = eoe->_edges;
5834 for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
5836 if ( eE[iE]->_cosin <= theMinSmoothCosin )
5839 SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
5840 while ( segIt->more() )
5842 const SMDS_MeshElement* seg = segIt->next();
5843 if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
5845 if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
5846 continue; // not to check a seg twice
5847 for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
5849 _LayerEdge* eN = eE[iE]->_neibors[iN];
5850 if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
5852 double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
5853 double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
5854 eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
5855 eN->Set( _LayerEdge::NEAR_BOUNDARY );
5860 } // if ( eos->ShapeType() == TopAbs_FACE )
5862 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5864 eos->_edges[i]->_smooFunction = 0;
5865 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
5867 bool isCurved = false;
5868 for ( size_t i = 0; i < eos->_edges.size(); ++i )
5870 _LayerEdge* edge = eos->_edges[i];
5872 // get simplices sorted
5873 _Simplex::SortSimplices( edge->_simplices );
5875 // smoothing function
5876 edge->ChooseSmooFunction( vertices, _n2eMap );
5879 double avgNormProj = 0, avgLen = 0;
5880 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
5882 _Simplex& s = edge->_simplices[iS];
5884 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
5885 avgNormProj += edge->_normal * vec;
5886 avgLen += vec.Modulus();
5887 if ( substituteSrcNodes )
5889 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
5890 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
5893 avgNormProj /= edge->_simplices.size();
5894 avgLen /= edge->_simplices.size();
5895 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
5898 SMDS_FacePosition* fPos = dynamic_cast<SMDS_FacePosition*>( edge->_nodes[0]->GetPosition() );
5900 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
5901 fPos = dynamic_cast<SMDS_FacePosition*>( edge->_simplices[iS]._nPrev->GetPosition() );
5903 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
5907 // prepare for putOnOffsetSurface()
5908 if (( eos->ShapeType() == TopAbs_FACE ) &&
5909 ( isCurved || !eos->_eosConcaVer.empty() ))
5911 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
5912 eos->_edgeForOffset = 0;
5914 double maxCosin = -1;
5915 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
5917 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
5918 if ( !eoe || eoe->_edges.empty() ) continue;
5920 vector<_LayerEdge*>& eE = eoe->_edges;
5921 _LayerEdge* e = eE[ eE.size() / 2 ];
5922 if ( e->_cosin > maxCosin )
5924 eos->_edgeForOffset = e;
5925 maxCosin = e->_cosin;
5931 //================================================================================
5933 * \brief Add faces for smoothing
5935 //================================================================================
5937 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
5938 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
5940 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
5941 for ( ; eos != eosToSmooth.end(); ++eos )
5943 if ( !*eos || (*eos)->_toSmooth ) continue;
5945 (*eos)->_toSmooth = true;
5947 if ( (*eos)->ShapeType() == TopAbs_FACE )
5949 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
5950 (*eos)->_toSmooth = true;
5954 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
5955 if ( edgesNoAnaSmooth )
5956 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
5958 if ( (*eos)->_edgeSmoother )
5959 (*eos)->_edgeSmoother->_anaCurve.Nullify();
5963 //================================================================================
5965 * \brief Fill data._collisionEdges
5967 //================================================================================
5969 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
5971 data._collisionEdges.clear();
5973 // set the full thickness of the layers to LEs
5974 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5976 _EdgesOnShape& eos = data._edgesOnShape[iS];
5977 if ( eos._edges.empty() ) continue;
5978 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
5980 for ( size_t i = 0; i < eos._edges.size(); ++i )
5982 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
5983 double maxLen = eos._edges[i]->_maxLen;
5984 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
5985 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
5986 eos._edges[i]->_maxLen = maxLen;
5990 // make temporary quadrangles got by extrusion of
5991 // mesh edges along _LayerEdge._normal's
5993 vector< const SMDS_MeshElement* > tmpFaces;
5995 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5997 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5998 if ( eos.ShapeType() != TopAbs_EDGE )
6000 if ( eos._edges.empty() )
6002 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
6003 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
6004 while ( smIt->more() )
6005 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
6006 if ( eov->_edges.size() == 1 )
6007 edge[ bool( edge[0]) ] = eov->_edges[0];
6011 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
6012 tmpFaces.push_back( f );
6015 for ( size_t i = 0; i < eos._edges.size(); ++i )
6017 _LayerEdge* edge = eos._edges[i];
6018 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
6020 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
6021 if ( src2->GetPosition()->GetDim() > 0 &&
6022 src2->GetID() < edge->_nodes[0]->GetID() )
6023 continue; // avoid using same segment twice
6025 // a _LayerEdge containg tgt2
6026 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
6028 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
6029 tmpFaces.push_back( f );
6034 // Find _LayerEdge's intersecting tmpFaces.
6036 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
6038 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
6039 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
6041 double dist1, dist2, segLen, eps;
6042 _CollisionEdges collEdges;
6043 vector< const SMDS_MeshElement* > suspectFaces;
6044 const double angle30 = Cos( 30. * M_PI / 180. );
6046 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6048 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6049 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
6051 // find sub-shapes whose VL can influence VL on eos
6052 set< TGeomID > neighborShapes;
6053 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
6054 while ( const TopoDS_Shape* face = fIt->next() )
6056 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
6057 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
6059 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6060 while ( subIt->more() )
6061 neighborShapes.insert( subIt->next()->GetId() );
6064 if ( eos.ShapeType() == TopAbs_VERTEX )
6066 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
6067 while ( const TopoDS_Shape* edge = eIt->next() )
6068 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
6070 // find intersecting _LayerEdge's
6071 for ( size_t i = 0; i < eos._edges.size(); ++i )
6073 _LayerEdge* edge = eos._edges[i];
6074 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
6075 eps = 0.5 * edge->_len;
6078 gp_Vec eSegDir0, eSegDir1;
6079 if ( edge->IsOnEdge() )
6081 SMESH_TNodeXYZ eP( edge->_nodes[0] );
6082 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
6083 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
6085 suspectFaces.clear();
6086 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len,
6087 SMDSAbs_Face, suspectFaces );
6088 collEdges._intEdges.clear();
6089 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
6091 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
6092 if ( f->_le1 == edge || f->_le2 == edge ) continue;
6093 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
6094 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
6095 if ( edge->IsOnEdge() ) {
6096 if ( edge->_2neibors->include( f->_le1 ) ||
6097 edge->_2neibors->include( f->_le2 )) continue;
6100 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
6101 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
6103 dist1 = dist2 = Precision::Infinite();
6104 if ( !edge->SegTriaInter( lastSegment, f->_nn[0], f->_nn[1], f->_nn[2], dist1, eps ))
6105 dist1 = Precision::Infinite();
6106 if ( !edge->SegTriaInter( lastSegment, f->_nn[3], f->_nn[2], f->_nn[0], dist2, eps ))
6107 dist2 = Precision::Infinite();
6108 if (( dist1 > segLen ) && ( dist2 > segLen ))
6111 if ( edge->IsOnEdge() )
6113 // skip perpendicular EDGEs
6114 gp_Vec fSegDir = SMESH_TNodeXYZ( f->_nn[0] ) - SMESH_TNodeXYZ( f->_nn[3] );
6115 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle30 ) ||
6116 isLessAngle( eSegDir1, fSegDir, angle30 ) ||
6117 isLessAngle( eSegDir0, fSegDir.Reversed(), angle30 ) ||
6118 isLessAngle( eSegDir1, fSegDir.Reversed(), angle30 ));
6123 // either limit inflation of edges or remember them for updating _normal
6124 // double dot = edge->_normal * f->GetDir();
6127 collEdges._intEdges.push_back( f->_le1 );
6128 collEdges._intEdges.push_back( f->_le2 );
6132 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
6133 // edge->_maxLen = Min( shortLen, edge->_maxLen );
6137 if ( !collEdges._intEdges.empty() )
6139 collEdges._edge = edge;
6140 data._collisionEdges.push_back( collEdges );
6145 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
6148 // restore the zero thickness
6149 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6151 _EdgesOnShape& eos = data._edgesOnShape[iS];
6152 if ( eos._edges.empty() ) continue;
6153 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
6155 for ( size_t i = 0; i < eos._edges.size(); ++i )
6157 eos._edges[i]->InvalidateStep( 1, eos );
6158 eos._edges[i]->_len = 0;
6163 //================================================================================
6165 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
6166 * _LayerEdge's on neighbor EDGE's
6168 //================================================================================
6170 bool _ViscousBuilder::updateNormals( _SolidData& data,
6171 SMESH_MesherHelper& helper,
6175 updateNormalsOfC1Vertices( data );
6177 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
6180 // map to store new _normal and _cosin for each intersected edge
6181 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
6182 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
6183 _LayerEdge zeroEdge;
6184 zeroEdge._normal.SetCoord( 0,0,0 );
6185 zeroEdge._maxLen = Precision::Infinite();
6186 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
6188 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
6190 double segLen, dist1, dist2;
6191 vector< pair< _LayerEdge*, double > > intEdgesDist;
6192 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
6194 for ( int iter = 0; iter < 5; ++iter )
6196 edge2newEdge.clear();
6198 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
6200 _CollisionEdges& ce = data._collisionEdges[iE];
6201 _LayerEdge* edge1 = ce._edge;
6202 if ( !edge1 || edge1->Is( _LayerEdge::BLOCKED )) continue;
6203 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
6204 if ( !eos1 ) continue;
6206 // detect intersections
6207 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
6208 double testLen = 1.5 * edge1->_maxLen; //2 + edge1->_len * edge1->_lenFactor;
6209 double eps = 0.5 * edge1->_len;
6210 intEdgesDist.clear();
6211 double minIntDist = Precision::Infinite();
6212 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
6214 if ( ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) ||
6215 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
6217 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
6218 double fact = ( 1.1 + dot * dot );
6219 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
6220 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
6221 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
6222 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
6223 dist1 = dist2 = Precision::Infinite();
6224 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pTgt0, pSrc1, dist1, eps ) &&
6225 !edge1->SegTriaInter( lastSeg, pSrc1, pTgt1, pTgt0, dist2, eps ))
6227 if (( dist1 > testLen || dist1 < 0 ) &&
6228 ( dist2 > testLen || dist2 < 0 ))
6231 // choose a closest edge
6232 gp_Pnt intP( lastSeg.Location().XYZ() +
6233 lastSeg.Direction().XYZ() * ( Min( dist1, dist2 ) + segLen ));
6234 double d1 = intP.SquareDistance( pSrc0 );
6235 double d2 = intP.SquareDistance( pSrc1 );
6236 int iClose = i + ( d2 < d1 );
6237 _LayerEdge* edge2 = ce._intEdges[iClose];
6238 edge2->Unset( _LayerEdge::MARKED );
6240 // choose a closest edge among neighbors
6241 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
6242 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
6243 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
6245 _LayerEdge * edgeJ = intEdgesDist[j].first;
6246 if ( edge2->IsNeiborOnEdge( edgeJ ))
6248 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
6249 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
6252 intEdgesDist.push_back( make_pair( edge2, Min( dist1, dist2 )));
6253 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
6255 // iClose = i + !( d2 < d1 );
6256 // intEdges.push_back( ce._intEdges[iClose] );
6257 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
6259 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist1, minIntDist );
6260 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist2, minIntDist );
6265 // compute new _normals
6266 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
6268 _LayerEdge* edge2 = intEdgesDist[i].first;
6269 double distWgt = edge1->_len / intEdgesDist[i].second;
6270 if ( edge2->Is( _LayerEdge::MARKED )) continue;
6271 edge2->Set( _LayerEdge::MARKED );
6274 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
6276 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
6277 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
6278 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
6279 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
6280 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
6281 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
6282 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
6283 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
6284 newNormal.Normalize();
6288 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
6289 if ( cos1 < theMinSmoothCosin )
6291 newCos = cos2 * sgn1;
6293 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
6295 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
6299 newCos = edge1->_cosin;
6302 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
6303 e2neIt->second._normal += distWgt * newNormal;
6304 e2neIt->second._cosin = newCos;
6305 e2neIt->second._maxLen = 0.7 * minIntDist / edge1->_lenFactor;
6306 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
6307 e2neIt->second._normal += dir2;
6308 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
6309 e2neIt->second._normal += distWgt * newNormal;
6310 e2neIt->second._cosin = edge2->_cosin;
6311 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
6312 e2neIt->second._normal += dir1;
6316 if ( edge2newEdge.empty() )
6317 break; //return true;
6319 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
6321 // Update data of edges depending on a new _normal
6324 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
6326 _LayerEdge* edge = e2neIt->first;
6327 _LayerEdge& newEdge = e2neIt->second;
6328 _EdgesOnShape* eos = data.GetShapeEdges( edge );
6330 // Check if a new _normal is OK:
6331 newEdge._normal.Normalize();
6332 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
6334 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
6336 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6337 edge->_maxLen = newEdge._maxLen;
6338 edge->SetNewLength( newEdge._maxLen, *eos, helper );
6340 continue; // the new _normal is bad
6342 // the new _normal is OK
6344 // find shapes that need smoothing due to change of _normal
6345 if ( edge->_cosin < theMinSmoothCosin &&
6346 newEdge._cosin > theMinSmoothCosin )
6348 if ( eos->_sWOL.IsNull() )
6350 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
6351 while ( fIt->more() )
6352 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
6354 else // edge inflates along a FACE
6356 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
6357 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE );
6358 while ( const TopoDS_Shape* E = eIt->next() )
6360 if ( !helper.IsSubShape( *E, /*FACE=*/eos->_sWOL ))
6362 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ));
6363 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
6364 if ( angle < M_PI / 2 )
6365 shapesToSmooth.insert( data.GetShapeEdges( *E ));
6370 double len = edge->_len;
6371 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6372 edge->SetNormal( newEdge._normal );
6373 edge->SetCosin( newEdge._cosin );
6374 edge->SetNewLength( len, *eos, helper );
6375 edge->Set( _LayerEdge::MARKED );
6376 edge->Set( _LayerEdge::NORMAL_UPDATED );
6377 edgesNoAnaSmooth.insert( eos );
6380 // Update normals and other dependent data of not intersecting _LayerEdge's
6381 // neighboring the intersecting ones
6383 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
6385 _LayerEdge* edge1 = e2neIt->first;
6386 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
6387 if ( !edge1->Is( _LayerEdge::MARKED ))
6390 if ( edge1->IsOnEdge() )
6392 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
6393 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
6394 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
6397 if ( !edge1->_2neibors )
6399 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
6401 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
6402 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
6403 continue; // j-th neighbor is also intersected
6404 _LayerEdge* prevEdge = edge1;
6405 const int nbSteps = 10;
6406 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
6408 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
6409 neighbor->Is( _LayerEdge::MARKED ))
6411 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
6412 if ( !eos ) continue;
6413 _LayerEdge* nextEdge = neighbor;
6414 if ( neighbor->_2neibors )
6417 nextEdge = neighbor->_2neibors->_edges[iNext];
6418 if ( nextEdge == prevEdge )
6419 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
6421 double r = double(step-1)/nbSteps;
6422 if ( !nextEdge->_2neibors )
6425 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
6426 newNorm.Normalize();
6427 if ( !isNewNormalOk( data, *neighbor, newNorm ))
6430 double len = neighbor->_len;
6431 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
6432 neighbor->SetNormal( newNorm );
6433 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
6434 if ( neighbor->_2neibors )
6435 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
6436 neighbor->SetNewLength( len, *eos, helper );
6437 neighbor->Set( _LayerEdge::MARKED );
6438 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
6439 edgesNoAnaSmooth.insert( eos );
6441 if ( !neighbor->_2neibors )
6442 break; // neighbor is on VERTEX
6444 // goto the next neighbor
6445 prevEdge = neighbor;
6446 neighbor = nextEdge;
6453 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
6458 //================================================================================
6460 * \brief Check if a new normal is OK
6462 //================================================================================
6464 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
6466 const gp_XYZ& newNormal)
6468 // check a min angle between the newNormal and surrounding faces
6469 vector<_Simplex> simplices;
6470 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
6471 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
6472 double newMinDot = 1, curMinDot = 1;
6473 for ( size_t i = 0; i < simplices.size(); ++i )
6475 n1.Set( simplices[i]._nPrev );
6476 n2.Set( simplices[i]._nNext );
6477 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
6478 double normLen2 = normFace.SquareModulus();
6479 if ( normLen2 < std::numeric_limits<double>::min() )
6481 normFace /= Sqrt( normLen2 );
6482 newMinDot = Min( newNormal * normFace, newMinDot );
6483 curMinDot = Min( edge._normal * normFace, curMinDot );
6485 if ( newMinDot < 0.5 )
6487 return ( newMinDot >= curMinDot * 0.9 );
6488 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
6489 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
6490 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
6495 //================================================================================
6497 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
6499 //================================================================================
6501 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
6502 SMESH_MesherHelper& helper,
6504 const double stepSize )
6506 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
6507 return true; // no shapes needing smoothing
6509 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6511 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6512 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
6513 !eos._hyp.ToSmooth() ||
6514 eos.ShapeType() != TopAbs_FACE ||
6515 eos._edges.empty() )
6518 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
6519 if ( !toSmooth ) continue;
6521 for ( size_t i = 0; i < eos._edges.size(); ++i )
6523 _LayerEdge* edge = eos._edges[i];
6524 if ( !edge->Is( _LayerEdge::SMOOTHED ))
6526 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
6529 const gp_XYZ& pPrev = edge->PrevPos();
6530 const gp_XYZ& pLast = edge->_pos.back();
6531 gp_XYZ stepVec = pLast - pPrev;
6532 double realStepSize = stepVec.Modulus();
6533 if ( realStepSize < numeric_limits<double>::min() )
6536 edge->_lenFactor = realStepSize / stepSize;
6537 edge->_normal = stepVec / realStepSize;
6538 edge->Set( _LayerEdge::NORMAL_UPDATED );
6545 //================================================================================
6547 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
6549 //================================================================================
6551 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
6553 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6555 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
6556 if ( eov._eosC1.empty() ||
6557 eov.ShapeType() != TopAbs_VERTEX ||
6558 eov._edges.empty() )
6561 gp_XYZ newNorm = eov._edges[0]->_normal;
6562 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
6563 bool normChanged = false;
6565 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
6567 _EdgesOnShape* eoe = eov._eosC1[i];
6568 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
6569 const double eLen = SMESH_Algo::EdgeLength( e );
6570 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
6571 if ( oppV.IsSame( eov._shape ))
6572 oppV = SMESH_MesherHelper::IthVertex( 1, e );
6573 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
6574 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
6576 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
6577 if ( curThickOpp + curThick < eLen )
6580 double wgt = 2. * curThick / eLen;
6581 newNorm += wgt * eovOpp->_edges[0]->_normal;
6586 eov._edges[0]->SetNormal( newNorm.Normalized() );
6587 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
6592 //================================================================================
6594 * \brief Modify normals of _LayerEdge's on _ConvexFace's
6596 //================================================================================
6598 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
6599 SMESH_MesherHelper& helper,
6602 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
6605 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
6606 for ( ; id2face != data._convexFaces.end(); ++id2face )
6608 _ConvexFace & convFace = (*id2face).second;
6609 if ( convFace._normalsFixed )
6610 continue; // already fixed
6611 if ( convFace.CheckPrisms() )
6612 continue; // nothing to fix
6614 convFace._normalsFixed = true;
6616 BRepAdaptor_Surface surface ( convFace._face, false );
6617 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
6619 // check if the convex FACE is of spherical shape
6621 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
6625 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
6626 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6628 _EdgesOnShape& eos = *(id2eos->second);
6629 if ( eos.ShapeType() == TopAbs_VERTEX )
6631 _LayerEdge* ledge = eos._edges[ 0 ];
6632 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
6633 centersBox.Add( center );
6635 for ( size_t i = 0; i < eos._edges.size(); ++i )
6636 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
6638 if ( centersBox.IsVoid() )
6640 debugMsg( "Error: centersBox.IsVoid()" );
6643 const bool isSpherical =
6644 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
6646 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
6647 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
6651 // set _LayerEdge::_normal as average of all normals
6653 // WARNING: different density of nodes on EDGEs is not taken into account that
6654 // can lead to an improper new normal
6656 gp_XYZ avgNormal( 0,0,0 );
6658 id2eos = convFace._subIdToEOS.begin();
6659 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6661 _EdgesOnShape& eos = *(id2eos->second);
6662 // set data of _CentralCurveOnEdge
6663 if ( eos.ShapeType() == TopAbs_EDGE )
6665 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
6666 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
6667 if ( !eos._sWOL.IsNull() )
6668 ceCurve._adjFace.Nullify();
6670 ceCurve._ledges.insert( ceCurve._ledges.end(),
6671 eos._edges.begin(), eos._edges.end());
6673 // summarize normals
6674 for ( size_t i = 0; i < eos._edges.size(); ++i )
6675 avgNormal += eos._edges[ i ]->_normal;
6677 double normSize = avgNormal.SquareModulus();
6678 if ( normSize < 1e-200 )
6680 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
6683 avgNormal /= Sqrt( normSize );
6685 // compute new _LayerEdge::_cosin on EDGEs
6686 double avgCosin = 0;
6689 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6691 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
6692 if ( ceCurve._adjFace.IsNull() )
6694 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
6696 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
6697 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
6700 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
6701 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
6702 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
6708 avgCosin /= nbCosin;
6710 // set _LayerEdge::_normal = avgNormal
6711 id2eos = convFace._subIdToEOS.begin();
6712 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6714 _EdgesOnShape& eos = *(id2eos->second);
6715 if ( eos.ShapeType() != TopAbs_EDGE )
6716 for ( size_t i = 0; i < eos._edges.size(); ++i )
6717 eos._edges[ i ]->_cosin = avgCosin;
6719 for ( size_t i = 0; i < eos._edges.size(); ++i )
6721 eos._edges[ i ]->SetNormal( avgNormal );
6722 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
6726 else // if ( isSpherical )
6728 // We suppose that centers of curvature at all points of the FACE
6729 // lie on some curve, let's call it "central curve". For all _LayerEdge's
6730 // having a common center of curvature we define the same new normal
6731 // as a sum of normals of _LayerEdge's on EDGEs among them.
6733 // get all centers of curvature for each EDGE
6735 helper.SetSubShape( convFace._face );
6736 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
6738 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
6739 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
6741 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
6743 // set adjacent FACE
6744 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
6746 // get _LayerEdge's of the EDGE
6747 TGeomID edgeID = meshDS->ShapeToIndex( edge );
6748 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
6749 if ( !eos || eos->_edges.empty() )
6751 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
6752 for ( int iV = 0; iV < 2; ++iV )
6754 TopoDS_Vertex v = helper.IthVertex( iV, edge );
6755 TGeomID vID = meshDS->ShapeToIndex( v );
6756 eos = data.GetShapeEdges( vID );
6757 vertexLEdges[ iV ] = eos->_edges[ 0 ];
6759 edgeLEdge = &vertexLEdges[0];
6760 edgeLEdgeEnd = edgeLEdge + 2;
6762 centerCurves[ iE ]._adjFace.Nullify();
6766 if ( ! eos->_toSmooth )
6767 data.SortOnEdge( edge, eos->_edges );
6768 edgeLEdge = &eos->_edges[ 0 ];
6769 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
6770 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
6771 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
6773 if ( ! eos->_sWOL.IsNull() )
6774 centerCurves[ iE ]._adjFace.Nullify();
6777 // Get curvature centers
6781 if ( edgeLEdge[0]->IsOnEdge() &&
6782 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
6784 centerCurves[ iE ].Append( center, vertexLEdges[0] );
6785 centersBox.Add( center );
6787 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
6788 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
6789 { // EDGE or VERTEXes
6790 centerCurves[ iE ].Append( center, *edgeLEdge );
6791 centersBox.Add( center );
6793 if ( edgeLEdge[-1]->IsOnEdge() &&
6794 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
6796 centerCurves[ iE ].Append( center, vertexLEdges[1] );
6797 centersBox.Add( center );
6799 centerCurves[ iE ]._isDegenerated =
6800 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
6802 } // loop on EDGES of convFace._face to set up data of centerCurves
6804 // Compute new normals for _LayerEdge's on EDGEs
6806 double avgCosin = 0;
6809 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
6811 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
6812 if ( ceCurve._isDegenerated )
6814 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
6815 vector< gp_XYZ > & newNormals = ceCurve._normals;
6816 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
6819 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
6822 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
6824 if ( isOK && !ceCurve._adjFace.IsNull() )
6826 // compute new _LayerEdge::_cosin
6827 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
6828 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
6831 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
6832 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
6833 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
6839 // set new normals to _LayerEdge's of NOT degenerated central curves
6840 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6842 if ( centerCurves[ iE ]._isDegenerated )
6844 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
6846 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
6847 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
6850 // set new normals to _LayerEdge's of degenerated central curves
6851 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6853 if ( !centerCurves[ iE ]._isDegenerated ||
6854 centerCurves[ iE ]._ledges.size() < 3 )
6856 // new normal is an average of new normals at VERTEXes that
6857 // was computed on non-degenerated _CentralCurveOnEdge's
6858 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
6859 centerCurves[ iE ]._ledges.back ()->_normal );
6860 double sz = newNorm.Modulus();
6864 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
6865 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
6866 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
6868 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
6869 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
6870 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
6874 // Find new normals for _LayerEdge's based on FACE
6877 avgCosin /= nbCosin;
6878 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
6879 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
6880 if ( id2eos != convFace._subIdToEOS.end() )
6884 _EdgesOnShape& eos = * ( id2eos->second );
6885 for ( size_t i = 0; i < eos._edges.size(); ++i )
6887 _LayerEdge* ledge = eos._edges[ i ];
6888 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
6890 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
6892 iE = iE % centerCurves.size();
6893 if ( centerCurves[ iE ]._isDegenerated )
6895 newNorm.SetCoord( 0,0,0 );
6896 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
6898 ledge->SetNormal( newNorm );
6899 ledge->_cosin = avgCosin;
6900 ledge->Set( _LayerEdge::NORMAL_UPDATED );
6907 } // not a quasi-spherical FACE
6909 // Update _LayerEdge's data according to a new normal
6911 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
6912 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
6914 id2eos = convFace._subIdToEOS.begin();
6915 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
6917 _EdgesOnShape& eos = * ( id2eos->second );
6918 for ( size_t i = 0; i < eos._edges.size(); ++i )
6920 _LayerEdge* & ledge = eos._edges[ i ];
6921 double len = ledge->_len;
6922 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
6923 ledge->SetCosin( ledge->_cosin );
6924 ledge->SetNewLength( len, eos, helper );
6926 if ( eos.ShapeType() != TopAbs_FACE )
6927 for ( size_t i = 0; i < eos._edges.size(); ++i )
6929 _LayerEdge* ledge = eos._edges[ i ];
6930 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
6932 _LayerEdge* neibor = ledge->_neibors[iN];
6933 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
6935 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
6936 neibor->Set( _LayerEdge::MOVED );
6937 neibor->SetSmooLen( neibor->_len );
6941 } // loop on sub-shapes of convFace._face
6943 // Find FACEs adjacent to convFace._face that got necessity to smooth
6944 // as a result of normals modification
6946 set< _EdgesOnShape* > adjFacesToSmooth;
6947 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
6949 if ( centerCurves[ iE ]._adjFace.IsNull() ||
6950 centerCurves[ iE ]._adjFaceToSmooth )
6952 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
6954 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
6956 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
6961 data.AddShapesToSmooth( adjFacesToSmooth );
6966 } // loop on data._convexFaces
6971 //================================================================================
6973 * \brief Finds a center of curvature of a surface at a _LayerEdge
6975 //================================================================================
6977 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
6978 BRepLProp_SLProps& surfProp,
6979 SMESH_MesherHelper& helper,
6980 gp_Pnt & center ) const
6982 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
6983 surfProp.SetParameters( uv.X(), uv.Y() );
6984 if ( !surfProp.IsCurvatureDefined() )
6987 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
6988 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
6989 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
6990 if ( surfCurvatureMin > surfCurvatureMax )
6991 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
6993 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
6998 //================================================================================
7000 * \brief Check that prisms are not distorted
7002 //================================================================================
7004 bool _ConvexFace::CheckPrisms() const
7007 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
7009 const _LayerEdge* edge = _simplexTestEdges[i];
7010 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
7011 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
7012 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
7014 debugMsg( "Bad simplex of _simplexTestEdges ("
7015 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
7016 << " "<< edge->_simplices[j]._nPrev->GetID()
7017 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
7024 //================================================================================
7026 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
7027 * stored in this _CentralCurveOnEdge.
7028 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
7029 * \param [in,out] newNormal - current normal at this point, to be redefined
7030 * \return bool - true if succeeded.
7032 //================================================================================
7034 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
7036 if ( this->_isDegenerated )
7039 // find two centers the given one lies between
7041 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
7043 double sl2 = 1.001 * _segLength2[ i ];
7045 double d1 = center.SquareDistance( _curvaCenters[ i ]);
7049 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
7050 if ( d2 > sl2 || d2 + d1 < 1e-100 )
7055 double r = d1 / ( d1 + d2 );
7056 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
7057 ( r ) * _ledges[ i+1 ]->_normal );
7061 double sz = newNormal.Modulus();
7070 //================================================================================
7072 * \brief Set shape members
7074 //================================================================================
7076 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
7077 const _ConvexFace& convFace,
7079 SMESH_MesherHelper& helper)
7083 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
7084 while ( const TopoDS_Shape* F = fIt->next())
7085 if ( !convFace._face.IsSame( *F ))
7087 _adjFace = TopoDS::Face( *F );
7088 _adjFaceToSmooth = false;
7089 // _adjFace already in a smoothing queue ?
7090 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
7091 _adjFaceToSmooth = eos->_toSmooth;
7096 //================================================================================
7098 * \brief Looks for intersection of it's last segment with faces
7099 * \param distance - returns shortest distance from the last node to intersection
7101 //================================================================================
7103 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
7105 const double& epsilon,
7107 const SMDS_MeshElement** intFace)
7109 vector< const SMDS_MeshElement* > suspectFaces;
7111 gp_Ax1 lastSegment = LastSegment( segLen, eos );
7112 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
7114 bool segmentIntersected = false;
7115 distance = Precision::Infinite();
7116 int iFace = -1; // intersected face
7117 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
7119 const SMDS_MeshElement* face = suspectFaces[j];
7120 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
7121 face->GetNodeIndex( _nodes[0] ) >= 0 )
7122 continue; // face sharing _LayerEdge node
7123 const int nbNodes = face->NbCornerNodes();
7124 bool intFound = false;
7126 SMDS_MeshElement::iterator nIt = face->begin_nodes();
7129 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
7133 const SMDS_MeshNode* tria[3];
7136 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
7139 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
7145 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
7146 segmentIntersected = true;
7147 if ( distance > dist )
7148 distance = dist, iFace = j;
7151 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
7155 if ( segmentIntersected )
7158 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
7159 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
7160 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
7161 << ", intersection with face ("
7162 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
7163 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
7164 << ") distance = " << distance << endl;
7168 return segmentIntersected;
7171 //================================================================================
7173 * \brief Returns size and direction of the last segment
7175 //================================================================================
7177 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
7179 // find two non-coincident positions
7180 gp_XYZ orig = _pos.back();
7182 int iPrev = _pos.size() - 2;
7183 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
7184 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
7185 while ( iPrev >= 0 )
7187 vec = orig - _pos[iPrev];
7188 if ( vec.SquareModulus() > tol*tol )
7198 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
7199 segDir.SetDirection( _normal );
7204 gp_Pnt pPrev = _pos[ iPrev ];
7205 if ( !eos._sWOL.IsNull() )
7207 TopLoc_Location loc;
7208 if ( eos.SWOLType() == TopAbs_EDGE )
7211 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
7212 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
7216 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
7217 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
7219 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
7221 segDir.SetLocation( pPrev );
7222 segDir.SetDirection( vec );
7223 segLen = vec.Modulus();
7229 //================================================================================
7231 * \brief Return the last position of the target node on a FACE.
7232 * \param [in] F - the FACE this _LayerEdge is inflated along
7233 * \return gp_XY - result UV
7235 //================================================================================
7237 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos ) const
7239 if ( F.IsSame( eos._sWOL )) // F is my FACE
7240 return gp_XY( _pos.back().X(), _pos.back().Y() );
7242 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
7243 return gp_XY( 1e100, 1e100 );
7245 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
7246 double f, l, u = _pos.back().X();
7247 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
7248 if ( !C2d.IsNull() && f <= u && u <= l )
7249 return C2d->Value( u ).XY();
7251 return gp_XY( 1e100, 1e100 );
7254 //================================================================================
7256 * \brief Test intersection of the last segment with a given triangle
7257 * using Moller-Trumbore algorithm
7258 * Intersection is detected if distance to intersection is less than _LayerEdge._len
7260 //================================================================================
7262 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
7263 const gp_XYZ& vert0,
7264 const gp_XYZ& vert1,
7265 const gp_XYZ& vert2,
7267 const double& EPSILON) const
7269 const gp_Pnt& orig = lastSegment.Location();
7270 const gp_Dir& dir = lastSegment.Direction();
7272 /* calculate distance from vert0 to ray origin */
7273 gp_XYZ tvec = orig.XYZ() - vert0;
7275 //if ( tvec * dir > EPSILON )
7276 // intersected face is at back side of the temporary face this _LayerEdge belongs to
7279 gp_XYZ edge1 = vert1 - vert0;
7280 gp_XYZ edge2 = vert2 - vert0;
7282 /* begin calculating determinant - also used to calculate U parameter */
7283 gp_XYZ pvec = dir.XYZ() ^ edge2;
7285 /* if determinant is near zero, ray lies in plane of triangle */
7286 double det = edge1 * pvec;
7288 const double ANGL_EPSILON = 1e-12;
7289 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
7292 /* calculate U parameter and test bounds */
7293 double u = ( tvec * pvec ) / det;
7294 //if (u < 0.0 || u > 1.0)
7295 if ( u < -EPSILON || u > 1.0 + EPSILON )
7298 /* prepare to test V parameter */
7299 gp_XYZ qvec = tvec ^ edge1;
7301 /* calculate V parameter and test bounds */
7302 double v = (dir.XYZ() * qvec) / det;
7303 //if ( v < 0.0 || u + v > 1.0 )
7304 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
7307 /* calculate t, ray intersects triangle */
7308 t = (edge2 * qvec) / det;
7314 //================================================================================
7316 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
7317 * neighbor _LayerEdge's by it's own inflation vector.
7318 * \param [in] eov - EOS of the VERTEX
7319 * \param [in] eos - EOS of the FACE
7320 * \param [in] step - inflation step
7321 * \param [in,out] badSmooEdges - not untangled _LayerEdge's
7323 //================================================================================
7325 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
7326 const _EdgesOnShape* eos,
7328 vector< _LayerEdge* > & badSmooEdges )
7330 // check if any of _neibors is in badSmooEdges
7331 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
7332 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
7335 // get all edges to move
7337 set< _LayerEdge* > edges;
7339 // find a distance between _LayerEdge on VERTEX and its neighbors
7340 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
7342 for ( size_t i = 0; i < _neibors.size(); ++i )
7344 _LayerEdge* nEdge = _neibors[i];
7345 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
7347 edges.insert( nEdge );
7348 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
7351 // add _LayerEdge's close to curPosV
7355 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7357 _LayerEdge* edgeF = *e;
7358 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
7360 _LayerEdge* nEdge = edgeF->_neibors[i];
7361 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
7362 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
7363 edges.insert( nEdge );
7367 while ( nbE < edges.size() );
7369 // move the target node of the got edges
7371 gp_XYZ prevPosV = PrevPos();
7372 if ( eov->SWOLType() == TopAbs_EDGE )
7374 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
7375 prevPosV = curve.Value( prevPosV.X() ).XYZ();
7377 else if ( eov->SWOLType() == TopAbs_FACE )
7379 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
7380 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
7383 SMDS_FacePosition* fPos;
7384 //double r = 1. - Min( 0.9, step / 10. );
7385 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7387 _LayerEdge* edgeF = *e;
7388 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
7389 const gp_XYZ newPosF = curPosV + prevVF;
7390 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7391 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
7392 edgeF->_pos.back() = newPosF;
7393 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
7395 // set _curvature to make edgeF updated by putOnOffsetSurface()
7396 if ( !edgeF->_curvature )
7397 if (( fPos = dynamic_cast<SMDS_FacePosition*>( edgeF->_nodes[0]->GetPosition() )))
7399 edgeF->_curvature = new _Curvature;
7400 edgeF->_curvature->_r = 0;
7401 edgeF->_curvature->_k = 0;
7402 edgeF->_curvature->_h2lenRatio = 0;
7403 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
7406 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
7407 // SMESH_TNodeXYZ( _nodes[0] ));
7408 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7410 // _LayerEdge* edgeF = *e;
7411 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
7412 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7413 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7414 // edgeF->_pos.back() = newPosF;
7415 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
7418 // smooth _LayerEdge's around moved nodes
7419 //size_t nbBadBefore = badSmooEdges.size();
7420 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
7422 _LayerEdge* edgeF = *e;
7423 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
7424 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
7425 //&& !edges.count( edgeF->_neibors[j] ))
7427 _LayerEdge* edgeFN = edgeF->_neibors[j];
7428 edgeFN->Unset( SMOOTHED );
7429 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
7432 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
7433 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
7434 // int nbBadAfter = edgeFN->_simplices.size();
7436 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
7438 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
7440 // if ( nbBadAfter <= nbBad )
7442 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
7443 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7444 // edgeF->_pos.back() = newPosF;
7445 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
7446 // nbBad = nbBadAfter;
7450 badSmooEdges.push_back( edgeFN );
7453 // move a bit not smoothed around moved nodes
7454 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
7456 // _LayerEdge* edgeF = badSmooEdges[i];
7457 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
7458 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
7459 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
7460 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
7461 // edgeF->_pos.back() = newPosF;
7462 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
7466 //================================================================================
7468 * \brief Perform smooth of _LayerEdge's based on EDGE's
7469 * \retval bool - true if node has been moved
7471 //================================================================================
7473 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
7474 const TopoDS_Face& F,
7475 SMESH_MesherHelper& helper)
7477 ASSERT( IsOnEdge() );
7479 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
7480 SMESH_TNodeXYZ oldPos( tgtNode );
7481 double dist01, distNewOld;
7483 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
7484 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
7485 dist01 = p0.Distance( _2neibors->tgtNode(1) );
7487 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
7488 double lenDelta = 0;
7491 //lenDelta = _curvature->lenDelta( _len );
7492 lenDelta = _curvature->lenDeltaByDist( dist01 );
7493 newPos.ChangeCoord() += _normal * lenDelta;
7496 distNewOld = newPos.Distance( oldPos );
7500 if ( _2neibors->_plnNorm )
7502 // put newPos on the plane defined by source node and _plnNorm
7503 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
7504 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
7505 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
7507 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7508 _pos.back() = newPos.XYZ();
7512 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7513 gp_XY uv( Precision::Infinite(), 0 );
7514 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
7515 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
7517 newPos = surface->Value( uv );
7518 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
7521 // commented for IPAL0052478
7522 // if ( _curvature && lenDelta < 0 )
7524 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
7525 // _len -= prevPos.Distance( oldPos );
7526 // _len += prevPos.Distance( newPos );
7528 bool moved = distNewOld > dist01/50;
7530 dumpMove( tgtNode ); // debug
7535 //================================================================================
7537 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
7539 //================================================================================
7541 void _LayerEdge::SmoothWoCheck()
7543 if ( Is( DIFFICULT ))
7546 bool moved = Is( SMOOTHED );
7547 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
7548 moved = _neibors[i]->Is( SMOOTHED );
7552 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7554 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7555 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7556 _pos.back() = newPos;
7558 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
7561 //================================================================================
7563 * \brief Checks validity of _neibors on EDGEs and VERTEXes
7565 //================================================================================
7567 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
7569 if ( ! Is( NEAR_BOUNDARY ))
7574 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
7576 _LayerEdge* eN = _neibors[iN];
7577 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
7580 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) || eN->Is( _LayerEdge::NORMAL_UPDATED ));
7582 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
7583 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
7584 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
7585 if ( eN->_nodes.size() > 1 &&
7586 eN->_simplices[i].Includes( _nodes.back() ) &&
7587 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
7592 badNeibors->push_back( eN );
7593 debugMsg("Bad boundary simplex ( "
7594 << " "<< eN->_nodes[0]->GetID()
7595 << " "<< eN->_nodes.back()->GetID()
7596 << " "<< eN->_simplices[i]._nPrev->GetID()
7597 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
7608 //================================================================================
7610 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
7611 * \retval int - nb of bad simplices around this _LayerEdge
7613 //================================================================================
7615 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
7617 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
7618 return 0; // shape of simplices not changed
7619 if ( _simplices.size() < 2 )
7620 return 0; // _LayerEdge inflated along EDGE or FACE
7622 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
7625 const gp_XYZ& curPos = _pos.back();
7626 const gp_XYZ& prevPos = PrevCheckPos();
7628 // quality metrics (orientation) of tetras around _tgtNode
7630 double vol, minVolBefore = 1e100;
7631 for ( size_t i = 0; i < _simplices.size(); ++i )
7633 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
7634 minVolBefore = Min( minVolBefore, vol );
7636 int nbBad = _simplices.size() - nbOkBefore;
7638 bool bndNeedSmooth = false;
7640 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
7644 // evaluate min angle
7645 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
7647 size_t nbGoodAngles = _simplices.size();
7649 for ( size_t i = 0; i < _simplices.size(); ++i )
7651 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
7654 if ( nbGoodAngles == _simplices.size() )
7660 if ( Is( ON_CONCAVE_FACE ))
7663 if ( step % 2 == 0 )
7666 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
7668 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
7669 _smooFunction = _funs[ FUN_CENTROIDAL ];
7671 _smooFunction = _funs[ FUN_LAPLACIAN ];
7674 // compute new position for the last _pos using different _funs
7677 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
7680 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7681 else if ( _funs[ iFun ] == _smooFunction )
7682 continue; // _smooFunction again
7683 else if ( step > 1 )
7684 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
7686 break; // let "easy" functions improve elements around distorted ones
7690 double delta = _curvature->lenDelta( _len );
7692 newPos += _normal * delta;
7695 double segLen = _normal * ( newPos - prevPos );
7696 if ( segLen + delta > 0 )
7697 newPos += _normal * delta;
7699 // double segLenChange = _normal * ( curPos - newPos );
7700 // newPos += 0.5 * _normal * segLenChange;
7704 double minVolAfter = 1e100;
7705 for ( size_t i = 0; i < _simplices.size(); ++i )
7707 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
7708 minVolAfter = Min( minVolAfter, vol );
7711 if ( nbOkAfter < nbOkBefore )
7715 ( nbOkAfter == nbOkBefore ) &&
7716 ( minVolAfter <= minVolBefore ))
7719 nbBad = _simplices.size() - nbOkAfter;
7720 minVolBefore = minVolAfter;
7721 nbOkBefore = nbOkAfter;
7724 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7725 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7726 _pos.back() = newPos;
7728 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
7729 << (nbBad ? " --BAD" : ""));
7733 continue; // look for a better function
7739 } // loop on smoothing functions
7741 if ( moved ) // notify _neibors
7744 for ( size_t i = 0; i < _neibors.size(); ++i )
7745 if ( !_neibors[i]->Is( MOVED ))
7747 _neibors[i]->Set( MOVED );
7748 toSmooth.push_back( _neibors[i] );
7755 //================================================================================
7757 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
7758 * \retval int - nb of bad simplices around this _LayerEdge
7760 //================================================================================
7762 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
7764 if ( !_smooFunction )
7765 return 0; // _LayerEdge inflated along EDGE or FACE
7767 return 0; // not inflated
7769 const gp_XYZ& curPos = _pos.back();
7770 const gp_XYZ& prevPos = PrevCheckPos();
7772 // quality metrics (orientation) of tetras around _tgtNode
7774 double vol, minVolBefore = 1e100;
7775 for ( size_t i = 0; i < _simplices.size(); ++i )
7777 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
7778 minVolBefore = Min( minVolBefore, vol );
7780 int nbBad = _simplices.size() - nbOkBefore;
7782 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
7784 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
7785 _smooFunction = _funs[ FUN_LAPLACIAN ];
7786 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
7787 _smooFunction = _funs[ FUN_CENTROIDAL ];
7790 // compute new position for the last _pos using different _funs
7792 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
7795 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
7796 else if ( _funs[ iFun ] == _smooFunction )
7797 continue; // _smooFunction again
7798 else if ( step > 1 )
7799 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
7801 break; // let "easy" functions improve elements around distorted ones
7805 double delta = _curvature->lenDelta( _len );
7807 newPos += _normal * delta;
7810 double segLen = _normal * ( newPos - prevPos );
7811 if ( segLen + delta > 0 )
7812 newPos += _normal * delta;
7814 // double segLenChange = _normal * ( curPos - newPos );
7815 // newPos += 0.5 * _normal * segLenChange;
7819 double minVolAfter = 1e100;
7820 for ( size_t i = 0; i < _simplices.size(); ++i )
7822 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
7823 minVolAfter = Min( minVolAfter, vol );
7826 if ( nbOkAfter < nbOkBefore )
7828 if (( isConcaveFace || findBest ) &&
7829 ( nbOkAfter == nbOkBefore ) &&
7830 ( minVolAfter <= minVolBefore )
7834 nbBad = _simplices.size() - nbOkAfter;
7835 minVolBefore = minVolAfter;
7836 nbOkBefore = nbOkAfter;
7838 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
7839 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
7840 _pos.back() = newPos;
7842 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
7843 << ( nbBad ? "--BAD" : ""));
7845 // commented for IPAL0052478
7846 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
7847 // _len += prevPos.Distance(newPos);
7849 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
7851 //_smooFunction = _funs[ iFun ];
7852 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
7853 // << "\t nbBad: " << _simplices.size() - nbOkAfter
7854 // << " minVol: " << minVolAfter
7855 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
7857 continue; // look for a better function
7863 } // loop on smoothing functions
7868 //================================================================================
7870 * \brief Chooses a smoothing technic giving a position most close to an initial one.
7871 * For a correct result, _simplices must contain nodes lying on geometry.
7873 //================================================================================
7875 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
7876 const TNode2Edge& n2eMap)
7878 if ( _smooFunction ) return;
7880 // use smoothNefPolygon() near concaveVertices
7881 if ( !concaveVertices.empty() )
7883 _smooFunction = _funs[ FUN_CENTROIDAL ];
7885 Set( ON_CONCAVE_FACE );
7887 for ( size_t i = 0; i < _simplices.size(); ++i )
7889 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
7891 _smooFunction = _funs[ FUN_NEFPOLY ];
7893 // set FUN_CENTROIDAL to neighbor edges
7894 for ( i = 0; i < _neibors.size(); ++i )
7896 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
7898 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
7905 // // this coice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
7906 // // where the nodes are smoothed too far along a sphere thus creating
7907 // // inverted _simplices
7908 // double dist[theNbSmooFuns];
7909 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
7910 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
7912 // double minDist = Precision::Infinite();
7913 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
7914 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
7916 // gp_Pnt newP = (this->*_funs[i])();
7917 // dist[i] = p.SquareDistance( newP );
7918 // if ( dist[i]*coef[i] < minDist )
7920 // _smooFunction = _funs[i];
7921 // minDist = dist[i]*coef[i];
7927 _smooFunction = _funs[ FUN_LAPLACIAN ];
7930 // for ( size_t i = 0; i < _simplices.size(); ++i )
7931 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
7932 // if ( minDim == 0 )
7933 // _smooFunction = _funs[ FUN_CENTROIDAL ];
7934 // else if ( minDim == 1 )
7935 // _smooFunction = _funs[ FUN_CENTROIDAL ];
7939 // for ( int i = 0; i < FUN_NB; ++i )
7941 // //cout << dist[i] << " ";
7942 // if ( _smooFunction == _funs[i] ) {
7944 // //debugMsg( fNames[i] );
7948 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
7951 //================================================================================
7953 * \brief Returns a name of _SmooFunction
7955 //================================================================================
7957 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
7960 fun = _smooFunction;
7961 for ( int i = 0; i < theNbSmooFuns; ++i )
7962 if ( fun == _funs[i] )
7965 return theNbSmooFuns;
7968 //================================================================================
7970 * \brief Computes a new node position using Laplacian smoothing
7972 //================================================================================
7974 gp_XYZ _LayerEdge::smoothLaplacian()
7976 gp_XYZ newPos (0,0,0);
7977 for ( size_t i = 0; i < _simplices.size(); ++i )
7978 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
7979 newPos /= _simplices.size();
7984 //================================================================================
7986 * \brief Computes a new node position using angular-based smoothing
7988 //================================================================================
7990 gp_XYZ _LayerEdge::smoothAngular()
7992 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
7993 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
7994 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
7996 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
7998 for ( size_t i = 0; i < _simplices.size(); ++i )
8000 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
8001 edgeDir.push_back( p - pPrev );
8002 edgeSize.push_back( edgeDir.back().Magnitude() );
8003 if ( edgeSize.back() < numeric_limits<double>::min() )
8006 edgeSize.pop_back();
8010 edgeDir.back() /= edgeSize.back();
8011 points.push_back( p );
8016 edgeDir.push_back ( edgeDir[0] );
8017 edgeSize.push_back( edgeSize[0] );
8018 pN /= points.size();
8020 gp_XYZ newPos(0,0,0);
8022 for ( size_t i = 0; i < points.size(); ++i )
8024 gp_Vec toN = pN - points[i];
8025 double toNLen = toN.Magnitude();
8026 if ( toNLen < numeric_limits<double>::min() )
8031 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
8032 double bisecLen = bisec.SquareMagnitude();
8033 if ( bisecLen < numeric_limits<double>::min() )
8035 gp_Vec norm = edgeDir[i] ^ toN;
8036 bisec = norm ^ edgeDir[i];
8037 bisecLen = bisec.SquareMagnitude();
8039 bisecLen = Sqrt( bisecLen );
8043 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
8044 sumSize += bisecLen;
8046 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
8047 sumSize += ( edgeSize[i] + edgeSize[i+1] );
8053 // project newPos to an average plane
8055 gp_XYZ norm(0,0,0); // plane normal
8056 points.push_back( points[0] );
8057 for ( size_t i = 1; i < points.size(); ++i )
8059 gp_XYZ vec1 = points[ i-1 ] - pN;
8060 gp_XYZ vec2 = points[ i ] - pN;
8061 gp_XYZ cross = vec1 ^ vec2;
8064 if ( cross * norm < numeric_limits<double>::min() )
8065 norm += cross.Reversed();
8069 catch (Standard_Failure) { // if |cross| == 0.
8072 gp_XYZ vec = newPos - pN;
8073 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
8074 newPos = newPos - r * norm;
8079 //================================================================================
8081 * \brief Computes a new node position using weigthed node positions
8083 //================================================================================
8085 gp_XYZ _LayerEdge::smoothLengthWeighted()
8087 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
8088 vector< gp_XYZ > points; points. reserve( _simplices.size() );
8090 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
8091 for ( size_t i = 0; i < _simplices.size(); ++i )
8093 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
8094 edgeSize.push_back( ( p - pPrev ).Modulus() );
8095 if ( edgeSize.back() < numeric_limits<double>::min() )
8097 edgeSize.pop_back();
8101 points.push_back( p );
8105 edgeSize.push_back( edgeSize[0] );
8107 gp_XYZ newPos(0,0,0);
8109 for ( size_t i = 0; i < points.size(); ++i )
8111 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
8112 sumSize += edgeSize[i] + edgeSize[i+1];
8118 //================================================================================
8120 * \brief Computes a new node position using angular-based smoothing
8122 //================================================================================
8124 gp_XYZ _LayerEdge::smoothCentroidal()
8126 gp_XYZ newPos(0,0,0);
8127 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
8129 for ( size_t i = 0; i < _simplices.size(); ++i )
8131 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
8132 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
8133 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
8134 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
8137 newPos += gc * size;
8144 //================================================================================
8146 * \brief Computes a new node position located inside a Nef polygon
8148 //================================================================================
8150 gp_XYZ _LayerEdge::smoothNefPolygon()
8151 #ifdef OLD_NEF_POLYGON
8153 gp_XYZ newPos(0,0,0);
8155 // get a plane to seach a solution on
8157 vector< gp_XYZ > vecs( _simplices.size() + 1 );
8159 const double tol = numeric_limits<double>::min();
8160 gp_XYZ center(0,0,0);
8161 for ( i = 0; i < _simplices.size(); ++i )
8163 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
8164 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
8165 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
8167 vecs.back() = vecs[0];
8168 center /= _simplices.size();
8170 gp_XYZ zAxis(0,0,0);
8171 for ( i = 0; i < _simplices.size(); ++i )
8172 zAxis += vecs[i] ^ vecs[i+1];
8175 for ( i = 0; i < _simplices.size(); ++i )
8178 if ( yAxis.SquareModulus() > tol )
8181 gp_XYZ xAxis = yAxis ^ zAxis;
8182 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
8183 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
8184 // p0.Distance( _simplices[2]._nPrev ));
8185 // gp_XYZ center = smoothLaplacian();
8186 // gp_XYZ xAxis, yAxis, zAxis;
8187 // for ( i = 0; i < _simplices.size(); ++i )
8189 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8190 // if ( xAxis.SquareModulus() > tol*tol )
8193 // for ( i = 1; i < _simplices.size(); ++i )
8195 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8196 // zAxis = xAxis ^ yAxis;
8197 // if ( zAxis.SquareModulus() > tol*tol )
8200 // if ( i == _simplices.size() ) return newPos;
8202 yAxis = zAxis ^ xAxis;
8203 xAxis /= xAxis.Modulus();
8204 yAxis /= yAxis.Modulus();
8206 // get half-planes of _simplices
8208 vector< _halfPlane > halfPlns( _simplices.size() );
8210 for ( size_t i = 0; i < _simplices.size(); ++i )
8212 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8213 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
8214 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
8215 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
8216 gp_XY vec12 = p2 - p1;
8217 double dist12 = vec12.Modulus();
8221 halfPlns[ nbHP ]._pos = p1;
8222 halfPlns[ nbHP ]._dir = vec12;
8223 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
8227 // intersect boundaries of half-planes, define state of intersection points
8228 // in relation to all half-planes and calculate internal point of a 2D polygon
8231 gp_XY newPos2D (0,0);
8233 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
8234 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
8235 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
8237 vector< vector< TIntPntState > > allIntPnts( nbHP );
8238 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
8240 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
8241 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
8243 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
8244 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
8247 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
8249 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8251 if ( iHP1 == iHP2 ) continue;
8253 TIntPntState & ips1 = intPnts1[ iHP2 ];
8254 if ( ips1.second == UNDEF )
8256 // find an intersection point of boundaries of iHP1 and iHP2
8258 if ( iHP2 == iPrev ) // intersection with neighbors is known
8259 ips1.first = halfPlns[ iHP1 ]._pos;
8260 else if ( iHP2 == iNext )
8261 ips1.first = halfPlns[ iHP2 ]._pos;
8262 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
8263 ips1.second = NO_INT;
8265 // classify the found intersection point
8266 if ( ips1.second != NO_INT )
8268 ips1.second = NOT_OUT;
8269 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
8270 if ( i != iHP1 && i != iHP2 &&
8271 halfPlns[ i ].IsOut( ips1.first, tol ))
8272 ips1.second = IS_OUT;
8274 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
8275 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
8276 TIntPntState & ips2 = intPnts2[ iHP1 ];
8279 if ( ips1.second == NOT_OUT )
8282 segEnds[ bool(segEnds[0]) ] = & ips1.first;
8286 // find a NOT_OUT segment of boundary which is located between
8287 // two NOT_OUT int points
8290 continue; // no such a segment
8294 // sort points along the boundary
8295 map< double, TIntPntState* > ipsByParam;
8296 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8298 TIntPntState & ips1 = intPnts1[ iHP2 ];
8299 if ( ips1.second != NO_INT )
8301 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
8302 double param = op * halfPlns[ iHP1 ]._dir;
8303 ipsByParam.insert( make_pair( param, & ips1 ));
8306 // look for two neighboring NOT_OUT points
8308 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
8309 for ( ; u2ips != ipsByParam.end(); ++u2ips )
8311 TIntPntState & ips1 = *(u2ips->second);
8312 if ( ips1.second == NOT_OUT )
8313 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
8314 else if ( nbNotOut >= 2 )
8321 if ( nbNotOut >= 2 )
8323 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
8326 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
8333 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
8342 #else // OLD_NEF_POLYGON
8343 { ////////////////////////////////// NEW
8344 gp_XYZ newPos(0,0,0);
8346 // get a plane to seach a solution on
8349 gp_XYZ center(0,0,0);
8350 for ( i = 0; i < _simplices.size(); ++i )
8351 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
8352 center /= _simplices.size();
8354 vector< gp_XYZ > vecs( _simplices.size() + 1 );
8355 for ( i = 0; i < _simplices.size(); ++i )
8356 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8357 vecs.back() = vecs[0];
8359 const double tol = numeric_limits<double>::min();
8360 gp_XYZ zAxis(0,0,0);
8361 for ( i = 0; i < _simplices.size(); ++i )
8363 gp_XYZ cross = vecs[i] ^ vecs[i+1];
8366 if ( cross * zAxis < tol )
8367 zAxis += cross.Reversed();
8371 catch (Standard_Failure) { // if |cross| == 0.
8376 for ( i = 0; i < _simplices.size(); ++i )
8379 if ( yAxis.SquareModulus() > tol )
8382 gp_XYZ xAxis = yAxis ^ zAxis;
8383 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
8384 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
8385 // p0.Distance( _simplices[2]._nPrev ));
8386 // gp_XYZ center = smoothLaplacian();
8387 // gp_XYZ xAxis, yAxis, zAxis;
8388 // for ( i = 0; i < _simplices.size(); ++i )
8390 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8391 // if ( xAxis.SquareModulus() > tol*tol )
8394 // for ( i = 1; i < _simplices.size(); ++i )
8396 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
8397 // zAxis = xAxis ^ yAxis;
8398 // if ( zAxis.SquareModulus() > tol*tol )
8401 // if ( i == _simplices.size() ) return newPos;
8403 yAxis = zAxis ^ xAxis;
8404 xAxis /= xAxis.Modulus();
8405 yAxis /= yAxis.Modulus();
8407 // get half-planes of _simplices
8409 vector< _halfPlane > halfPlns( _simplices.size() );
8411 for ( size_t i = 0; i < _simplices.size(); ++i )
8413 const gp_XYZ& OP1 = vecs[ i ];
8414 const gp_XYZ& OP2 = vecs[ i+1 ];
8415 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
8416 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
8417 gp_XY vec12 = p2 - p1;
8418 double dist12 = vec12.Modulus();
8422 halfPlns[ nbHP ]._pos = p1;
8423 halfPlns[ nbHP ]._dir = vec12;
8424 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
8428 // intersect boundaries of half-planes, define state of intersection points
8429 // in relation to all half-planes and calculate internal point of a 2D polygon
8432 gp_XY newPos2D (0,0);
8434 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
8435 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
8436 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
8438 vector< vector< TIntPntState > > allIntPnts( nbHP );
8439 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
8441 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
8442 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
8444 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
8445 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
8448 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
8450 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8452 if ( iHP1 == iHP2 ) continue;
8454 TIntPntState & ips1 = intPnts1[ iHP2 ];
8455 if ( ips1.second == UNDEF )
8457 // find an intersection point of boundaries of iHP1 and iHP2
8459 if ( iHP2 == iPrev ) // intersection with neighbors is known
8460 ips1.first = halfPlns[ iHP1 ]._pos;
8461 else if ( iHP2 == iNext )
8462 ips1.first = halfPlns[ iHP2 ]._pos;
8463 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
8464 ips1.second = NO_INT;
8466 // classify the found intersection point
8467 if ( ips1.second != NO_INT )
8469 ips1.second = NOT_OUT;
8470 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
8471 if ( i != iHP1 && i != iHP2 &&
8472 halfPlns[ i ].IsOut( ips1.first, tol ))
8473 ips1.second = IS_OUT;
8475 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
8476 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
8477 TIntPntState & ips2 = intPnts2[ iHP1 ];
8480 if ( ips1.second == NOT_OUT )
8483 segEnds[ bool(segEnds[0]) ] = & ips1.first;
8487 // find a NOT_OUT segment of boundary which is located between
8488 // two NOT_OUT int points
8491 continue; // no such a segment
8495 // sort points along the boundary
8496 map< double, TIntPntState* > ipsByParam;
8497 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
8499 TIntPntState & ips1 = intPnts1[ iHP2 ];
8500 if ( ips1.second != NO_INT )
8502 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
8503 double param = op * halfPlns[ iHP1 ]._dir;
8504 ipsByParam.insert( make_pair( param, & ips1 ));
8507 // look for two neighboring NOT_OUT points
8509 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
8510 for ( ; u2ips != ipsByParam.end(); ++u2ips )
8512 TIntPntState & ips1 = *(u2ips->second);
8513 if ( ips1.second == NOT_OUT )
8514 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
8515 else if ( nbNotOut >= 2 )
8522 if ( nbNotOut >= 2 )
8524 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
8527 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
8534 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
8543 #endif // OLD_NEF_POLYGON
8545 //================================================================================
8547 * \brief Add a new segment to _LayerEdge during inflation
8549 //================================================================================
8551 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
8556 if ( len > _maxLen )
8559 Block( eos.GetData() );
8561 const double lenDelta = len - _len;
8562 if ( lenDelta < len * 1e-3 )
8564 Block( eos.GetData() );
8568 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
8569 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
8571 if ( eos._hyp.IsOffsetMethod() )
8575 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
8576 while ( faceIt->more() )
8578 const SMDS_MeshElement* face = faceIt->next();
8579 if ( !eos.GetNormal( face, faceNorm ))
8582 // translate plane of a face
8583 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
8585 // find point of intersection of the face plane located at baryCenter
8586 // and _normal located at newXYZ
8587 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
8588 double dot = ( faceNorm.XYZ() * _normal );
8589 if ( dot < std::numeric_limits<double>::min() )
8590 dot = lenDelta * 1e-3;
8591 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
8592 newXYZ += step * _normal;
8597 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
8600 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
8601 _pos.push_back( newXYZ );
8603 if ( !eos._sWOL.IsNull() )
8607 if ( eos.SWOLType() == TopAbs_EDGE )
8609 double u = Precision::Infinite(); // to force projection w/o distance check
8610 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u,
8611 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
8612 _pos.back().SetCoord( u, 0, 0 );
8613 if ( _nodes.size() > 1 && uvOK )
8615 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( n->GetPosition() );
8616 pos->SetUParameter( u );
8621 gp_XY uv( Precision::Infinite(), 0 );
8622 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv,
8623 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
8624 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8625 if ( _nodes.size() > 1 && uvOK )
8627 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( n->GetPosition() );
8628 pos->SetUParameter( uv.X() );
8629 pos->SetVParameter( uv.Y() );
8634 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
8638 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
8640 Block( eos.GetData() );
8648 if ( eos.ShapeType() != TopAbs_FACE )
8650 for ( size_t i = 0; i < _neibors.size(); ++i )
8651 //if ( _len > _neibors[i]->GetSmooLen() )
8652 _neibors[i]->Set( MOVED );
8656 dumpMove( n ); //debug
8659 //================================================================================
8661 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
8663 //================================================================================
8665 void _LayerEdge::Block( _SolidData& data )
8667 if ( Is( BLOCKED )) return;
8671 std::queue<_LayerEdge*> queue;
8674 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
8675 while ( !queue.empty() )
8677 _LayerEdge* edge = queue.front(); queue.pop();
8678 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
8679 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
8680 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
8682 _LayerEdge* neibor = edge->_neibors[iN];
8683 if ( neibor->Is( BLOCKED ) ||
8684 neibor->_maxLen < edge->_maxLen )
8686 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
8687 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
8688 double minDist = pSrc.SquareDistance( pSrcN );
8689 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
8690 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
8691 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
8692 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
8693 if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() )
8695 newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
8697 if ( neibor->_maxLen > newMaxLen )
8699 neibor->_maxLen = newMaxLen;
8700 if ( neibor->_maxLen < neibor->_len )
8702 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
8703 while ( neibor->_len > neibor->_maxLen &&
8704 neibor->NbSteps() > 1 )
8705 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
8706 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
8708 queue.push( neibor );
8714 //================================================================================
8716 * \brief Remove last inflation step
8718 //================================================================================
8720 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
8722 if ( _pos.size() > curStep && _nodes.size() > 1 )
8724 _pos.resize( curStep );
8726 gp_Pnt nXYZ = _pos.back();
8727 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
8728 SMESH_TNodeXYZ curXYZ( n );
8729 if ( !eos._sWOL.IsNull() )
8731 TopLoc_Location loc;
8732 if ( eos.SWOLType() == TopAbs_EDGE )
8734 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( n->GetPosition() );
8735 pos->SetUParameter( nXYZ.X() );
8737 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8738 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
8742 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( n->GetPosition() );
8743 pos->SetUParameter( nXYZ.X() );
8744 pos->SetVParameter( nXYZ.Y() );
8745 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
8746 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
8749 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
8752 if ( restoreLength )
8754 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
8759 //================================================================================
8761 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
8763 //================================================================================
8765 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
8768 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
8771 // find the 1st smoothed _pos
8773 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
8775 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
8776 if ( normDist > tol * tol )
8779 if ( !iSmoothed ) return;
8781 if ( 1 || Is( DISTORTED ))
8783 // if ( segLen[ iSmoothed ] / segLen.back() < 0.5 )
8785 gp_XYZ normal = _normal;
8786 if ( Is( NORMAL_UPDATED ))
8787 for ( size_t i = 1; i < _pos.size(); ++i )
8789 normal = _pos[i] - _pos[0];
8790 double size = normal.Modulus();
8791 if ( size > RealSmall() )
8797 const double r = 0.2;
8798 for ( int iter = 0; iter < 3; ++iter )
8801 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
8803 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
8804 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
8806 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
8807 double newLen = ( 1-r ) * midLen + r * segLen[i];
8808 const_cast< double& >( segLen[i] ) = newLen;
8809 // check angle between normal and (_pos[i+1], _pos[i] )
8810 gp_XYZ posDir = _pos[i+1] - _pos[i];
8811 double size = posDir.Modulus();
8812 if ( size > RealSmall() )
8813 minDot = Min( minDot, ( normal * posDir ) / size );
8821 // for ( size_t i = 1; i < _pos.size()-1; ++i )
8823 // if ((int) i < iSmoothed && ( segLen[i] / segLen.back() < 0.5 ))
8826 // double wgt = segLen[i] / segLen.back();
8827 // gp_XYZ normPos = _pos[0] + _normal * wgt * _len;
8828 // gp_XYZ tgtPos = ( 1 - wgt ) * _pos[0] + wgt * _pos.back();
8829 // gp_XYZ newPos = ( 1 - wgt ) * normPos + wgt * tgtPos;
8830 // _pos[i] = newPos;
8835 //================================================================================
8837 * \brief Create layers of prisms
8839 //================================================================================
8841 bool _ViscousBuilder::refine(_SolidData& data)
8843 SMESH_MesherHelper& helper = data.GetHelper();
8844 helper.SetElementsOnShape(false);
8846 Handle(Geom_Curve) curve;
8847 Handle(ShapeAnalysis_Surface) surface;
8848 TopoDS_Edge geomEdge;
8849 TopoDS_Face geomFace;
8850 TopLoc_Location loc;
8853 vector< gp_XYZ > pos3D;
8855 TGeomID prevBaseId = -1;
8856 TNode2Edge* n2eMap = 0;
8857 TNode2Edge::iterator n2e;
8859 // Create intermediate nodes on each _LayerEdge
8861 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
8863 _EdgesOnShape& eos = data._edgesOnShape[iS];
8864 if ( eos._edges.empty() ) continue;
8866 if ( eos._edges[0]->_nodes.size() < 2 )
8867 continue; // on _noShrinkShapes
8869 // get data of a shrink shape
8871 geomEdge.Nullify(); geomFace.Nullify();
8872 curve.Nullify(); surface.Nullify();
8873 if ( !eos._sWOL.IsNull() )
8875 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
8878 geomEdge = TopoDS::Edge( eos._sWOL );
8879 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
8883 geomFace = TopoDS::Face( eos._sWOL );
8884 surface = helper.GetSurface( geomFace );
8887 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
8889 geomFace = TopoDS::Face( eos._shape );
8890 surface = helper.GetSurface( geomFace );
8891 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
8892 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
8894 eos._eosC1[ i ]->_toSmooth = true;
8895 for ( size_t j = 0; j < eos._eosC1[i]->_edges.size(); ++j )
8896 eos._eosC1[i]->_edges[j]->Set( _LayerEdge::SMOOTHED_C1 );
8900 vector< double > segLen;
8901 for ( size_t i = 0; i < eos._edges.size(); ++i )
8903 _LayerEdge& edge = *eos._edges[i];
8904 if ( edge._pos.size() < 2 )
8907 // get accumulated length of segments
8908 segLen.resize( edge._pos.size() );
8910 if ( eos._sWOL.IsNull() )
8912 bool useNormal = true;
8913 bool usePos = false;
8914 bool smoothed = false;
8915 const double preci = 0.1 * edge._len;
8916 if ( eos._toSmooth )
8918 gp_Pnt tgtExpected = edge._pos[0] + edge._normal * edge._len;
8919 smoothed = tgtExpected.SquareDistance( edge._pos.back() ) > preci * preci;
8923 if ( !surface.IsNull() &&
8924 !data._convexFaces.count( eos._shapeID )) // edge smoothed on FACE
8926 useNormal = usePos = false;
8927 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
8928 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
8930 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
8931 if ( surface->Gap() < 2. * edge._len )
8932 segLen[j] = surface->Gap();
8940 useNormal = usePos = false;
8941 edge._pos[1] = edge._pos.back();
8942 edge._pos.resize( 2 );
8944 segLen[ 1 ] = edge._len;
8946 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
8948 useNormal = usePos = false;
8949 _LayerEdge tmpEdge; // get original _normal
8950 tmpEdge._nodes.push_back( edge._nodes[0] );
8951 if ( !setEdgeData( tmpEdge, eos, helper, data ))
8954 for ( size_t j = 1; j < edge._pos.size(); ++j )
8955 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
8959 for ( size_t j = 1; j < edge._pos.size(); ++j )
8960 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
8964 for ( size_t j = 1; j < edge._pos.size(); ++j )
8965 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
8969 bool swapped = ( edge._pos.size() > 2 );
8973 for ( size_t j = 1; j < edge._pos.size(); ++j )
8974 if ( segLen[j] > segLen.back() )
8976 segLen.erase( segLen.begin() + j );
8977 edge._pos.erase( edge._pos.begin() + j );
8979 else if ( segLen[j] < segLen[j-1] )
8981 std::swap( segLen[j], segLen[j-1] );
8982 std::swap( edge._pos[j], edge._pos[j-1] );
8987 // smooth a path formed by edge._pos
8988 if (( smoothed ) /*&&
8989 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
8990 edge.SmoothPos( segLen, preci );
8992 else if ( eos._isRegularSWOL ) // usual SWOL
8994 for ( size_t j = 1; j < edge._pos.size(); ++j )
8995 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
8997 else if ( !surface.IsNull() ) // SWOL surface with singularities
8999 pos3D.resize( edge._pos.size() );
9000 for ( size_t j = 0; j < edge._pos.size(); ++j )
9001 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
9003 for ( size_t j = 1; j < edge._pos.size(); ++j )
9004 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
9007 // allocate memory for new nodes if it is not yet refined
9008 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9009 if ( edge._nodes.size() == 2 )
9011 edge._nodes.resize( eos._hyp.GetNumberLayers() + 1, 0 );
9013 edge._nodes.back() = tgtNode;
9015 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
9016 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
9017 if ( baseShapeId != prevBaseId )
9019 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
9020 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
9021 prevBaseId = baseShapeId;
9023 _LayerEdge* edgeOnSameNode = 0;
9024 bool useExistingPos = false;
9025 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
9027 edgeOnSameNode = n2e->second;
9028 useExistingPos = ( edgeOnSameNode->_len < edge._len );
9029 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
9030 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
9033 SMDS_EdgePosition* epos = static_cast<SMDS_EdgePosition*>( lastPos );
9034 epos->SetUParameter( otherTgtPos.X() );
9038 SMDS_FacePosition* fpos = static_cast<SMDS_FacePosition*>( lastPos );
9039 fpos->SetUParameter( otherTgtPos.X() );
9040 fpos->SetVParameter( otherTgtPos.Y() );
9043 // calculate height of the first layer
9045 const double T = segLen.back(); //data._hyp.GetTotalThickness();
9046 const double f = eos._hyp.GetStretchFactor();
9047 const int N = eos._hyp.GetNumberLayers();
9048 const double fPowN = pow( f, N );
9049 if ( fPowN - 1 <= numeric_limits<double>::min() )
9052 h0 = T * ( f - 1 )/( fPowN - 1 );
9054 const double zeroLen = std::numeric_limits<double>::min();
9056 // create intermediate nodes
9057 double hSum = 0, hi = h0/f;
9059 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
9061 // compute an intermediate position
9064 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
9066 int iPrevSeg = iSeg-1;
9067 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
9069 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
9070 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
9072 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
9073 if ( !eos._sWOL.IsNull() )
9075 // compute XYZ by parameters <pos>
9080 pos = curve->Value( u ).Transformed(loc);
9082 else if ( eos._isRegularSWOL )
9084 uv.SetCoord( pos.X(), pos.Y() );
9086 pos = surface->Value( pos.X(), pos.Y() );
9090 uv.SetCoord( pos.X(), pos.Y() );
9091 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
9092 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
9094 pos = surface->Value( uv );
9097 // create or update the node
9100 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
9101 if ( !eos._sWOL.IsNull() )
9104 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
9106 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
9110 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
9115 if ( !eos._sWOL.IsNull() )
9117 // make average pos from new and current parameters
9120 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
9121 if ( useExistingPos )
9122 u = helper.GetNodeU( geomEdge, node );
9123 pos = curve->Value( u ).Transformed(loc);
9125 SMDS_EdgePosition* epos = static_cast<SMDS_EdgePosition*>( node->GetPosition() );
9126 epos->SetUParameter( u );
9130 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
9131 if ( useExistingPos )
9132 uv = helper.GetNodeUV( geomFace, node );
9133 pos = surface->Value( uv );
9135 SMDS_FacePosition* fpos = static_cast<SMDS_FacePosition*>( node->GetPosition() );
9136 fpos->SetUParameter( uv.X() );
9137 fpos->SetVParameter( uv.Y() );
9140 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
9142 } // loop on edge._nodes
9144 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
9147 edge._pos.back().SetCoord( u, 0,0);
9149 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
9151 if ( edgeOnSameNode )
9152 edgeOnSameNode->_pos.back() = edge._pos.back();
9155 } // loop on eos._edges to create nodes
9158 if ( !getMeshDS()->IsEmbeddedMode() )
9159 // Log node movement
9160 for ( size_t i = 0; i < eos._edges.size(); ++i )
9162 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
9163 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
9170 helper.SetElementsOnShape(true);
9172 vector< vector<const SMDS_MeshNode*>* > nnVec;
9173 set< vector<const SMDS_MeshNode*>* > nnSet;
9174 set< int > degenEdgeInd;
9175 vector<const SMDS_MeshElement*> degenVols;
9176 vector<int> isRiskySWOL;
9178 TopExp_Explorer exp( data._solid, TopAbs_FACE );
9179 for ( ; exp.More(); exp.Next() )
9181 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
9182 if ( data._ignoreFaceIds.count( faceID ))
9184 const bool isReversedFace = data._reversedFaceIds.count( faceID );
9185 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
9186 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
9187 while ( fIt->more() )
9189 const SMDS_MeshElement* face = fIt->next();
9190 const int nbNodes = face->NbCornerNodes();
9191 nnVec.resize( nbNodes );
9193 degenEdgeInd.clear();
9194 isRiskySWOL.resize( nbNodes );
9195 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
9196 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
9197 for ( int iN = 0; iN < nbNodes; ++iN )
9199 const SMDS_MeshNode* n = nIt->next();
9200 _LayerEdge* edge = data._n2eMap[ n ];
9201 const int i = isReversedFace ? nbNodes-1-iN : iN;
9202 nnVec[ i ] = & edge->_nodes;
9203 maxZ = std::max( maxZ, nnVec[ i ]->size() );
9204 minZ = std::min( minZ, nnVec[ i ]->size() );
9205 //isRiskySWOL[ i ] = edge->Is( _LayerEdge::RISKY_SWOL );
9207 if ( helper.HasDegeneratedEdges() )
9208 nnSet.insert( nnVec[ i ]);
9213 if ( 0 < nnSet.size() && nnSet.size() < 3 )
9221 for ( size_t iZ = 1; iZ < minZ; ++iZ )
9222 helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
9223 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
9225 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
9227 for ( int iN = 0; iN < nbNodes; ++iN )
9228 if ( nnVec[ iN ]->size() < iZ+1 )
9229 degenEdgeInd.insert( iN );
9231 if ( degenEdgeInd.size() == 1 ) // PYRAM
9233 int i2 = *degenEdgeInd.begin();
9234 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
9235 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
9236 helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
9237 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
9241 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
9242 helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
9243 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
9244 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
9245 (*nnVec[ i3 ])[ iZ ]);
9253 for ( size_t iZ = 1; iZ < minZ; ++iZ )
9254 helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
9255 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
9256 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
9257 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
9259 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
9261 for ( int iN = 0; iN < nbNodes; ++iN )
9262 if ( nnVec[ iN ]->size() < iZ+1 )
9263 degenEdgeInd.insert( iN );
9265 switch ( degenEdgeInd.size() )
9269 int i2 = *degenEdgeInd.begin();
9270 int i3 = *degenEdgeInd.rbegin();
9271 bool ok = ( i3 - i2 == 1 );
9272 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
9273 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
9274 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
9276 const SMDS_MeshElement* vol =
9277 helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
9278 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
9280 degenVols.push_back( vol );
9284 default: // degen HEX
9286 const SMDS_MeshElement* vol =
9287 helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
9288 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
9289 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
9290 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
9291 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
9292 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
9293 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
9294 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
9295 degenVols.push_back( vol );
9302 return error("Not supported type of element", data._index);
9304 } // switch ( nbNodes )
9305 } // while ( fIt->more() )
9308 if ( !degenVols.empty() )
9310 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
9311 if ( !err || err->IsOK() )
9313 err.reset( new SMESH_ComputeError( COMPERR_WARNING,
9314 "Degenerated volumes created" ));
9315 err->myBadElements.insert( err->myBadElements.end(),
9316 degenVols.begin(),degenVols.end() );
9323 //================================================================================
9325 * \brief Shrink 2D mesh on faces to let space for inflated layers
9327 //================================================================================
9329 bool _ViscousBuilder::shrink()
9331 // make map of (ids of FACEs to shrink mesh on) to (_SolidData containing _LayerEdge's
9332 // inflated along FACE or EDGE)
9333 map< TGeomID, _SolidData* > f2sdMap;
9334 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9336 _SolidData& data = _sdVec[i];
9337 TopTools_MapOfShape FFMap;
9338 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
9339 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
9340 if ( s2s->second.ShapeType() == TopAbs_FACE )
9342 f2sdMap.insert( make_pair( getMeshDS()->ShapeToIndex( s2s->second ), &data ));
9344 if ( FFMap.Add( (*s2s).second ))
9345 // Put mesh faces on the shrinked FACE to the proxy sub-mesh to avoid
9346 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
9347 // by StdMeshers_QuadToTriaAdaptor
9348 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
9350 SMESH_ProxyMesh::SubMesh* proxySub =
9351 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
9352 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9353 while ( fIt->more() )
9354 proxySub->AddElement( fIt->next() );
9355 // as a result 3D algo will use elements from proxySub and not from smDS
9360 SMESH_MesherHelper helper( *_mesh );
9361 helper.ToFixNodeParameters( true );
9364 map< TGeomID, _Shrinker1D > e2shrMap;
9365 vector< _EdgesOnShape* > subEOS;
9366 vector< _LayerEdge* > lEdges;
9368 // loop on FACES to srink mesh on
9369 map< TGeomID, _SolidData* >::iterator f2sd = f2sdMap.begin();
9370 for ( ; f2sd != f2sdMap.end(); ++f2sd )
9372 _SolidData& data = *f2sd->second;
9373 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
9374 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
9375 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
9377 Handle(Geom_Surface) surface = BRep_Tool::Surface(F);
9379 helper.SetSubShape(F);
9381 // ===========================
9382 // Prepare data for shrinking
9383 // ===========================
9385 // Collect nodes to smooth, as src nodes are not yet replaced by tgt ones
9386 // and hence all nodes on a FACE connected to 2d elements are to be smoothed
9387 vector < const SMDS_MeshNode* > smoothNodes;
9389 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
9390 while ( nIt->more() )
9392 const SMDS_MeshNode* n = nIt->next();
9393 if ( n->NbInverseElements( SMDSAbs_Face ) > 0 )
9394 smoothNodes.push_back( n );
9397 // Find out face orientation
9399 const set<TGeomID> ignoreShapes;
9401 if ( !smoothNodes.empty() )
9403 vector<_Simplex> simplices;
9404 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
9405 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of silpmex nodes
9406 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
9407 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
9408 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper,refSign) )
9412 // Find _LayerEdge's inflated along F
9416 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
9417 /*complexFirst=*/true); //!!!
9418 while ( subIt->more() )
9420 const TGeomID subID = subIt->next()->GetId();
9421 if ( data._noShrinkShapes.count( subID ))
9423 _EdgesOnShape* eos = data.GetShapeEdges( subID );
9424 if ( !eos || eos->_sWOL.IsNull() ) continue;
9426 subEOS.push_back( eos );
9428 for ( size_t i = 0; i < eos->_edges.size(); ++i )
9430 lEdges.push_back( eos->_edges[ i ] );
9431 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
9436 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
9437 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9438 while ( fIt->more() )
9439 if ( const SMDS_MeshElement* f = fIt->next() )
9440 dumpChangeNodes( f );
9443 // Replace source nodes by target nodes in mesh faces to shrink
9444 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
9445 const SMDS_MeshNode* nodes[20];
9446 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9448 _EdgesOnShape& eos = * subEOS[ iS ];
9449 for ( size_t i = 0; i < eos._edges.size(); ++i )
9451 _LayerEdge& edge = *eos._edges[i];
9452 const SMDS_MeshNode* srcNode = edge._nodes[0];
9453 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9454 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
9455 while ( fIt->more() )
9457 const SMDS_MeshElement* f = fIt->next();
9458 if ( !smDS->Contains( f ))
9460 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
9461 for ( int iN = 0; nIt->more(); ++iN )
9463 const SMDS_MeshNode* n = nIt->next();
9464 nodes[iN] = ( n == srcNode ? tgtNode : n );
9466 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
9467 dumpChangeNodes( f );
9473 // find out if a FACE is concave
9474 const bool isConcaveFace = isConcave( F, helper );
9476 // Create _SmoothNode's on face F
9477 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
9479 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
9480 const bool sortSimplices = isConcaveFace;
9481 for ( size_t i = 0; i < smoothNodes.size(); ++i )
9483 const SMDS_MeshNode* n = smoothNodes[i];
9484 nodesToSmooth[ i ]._node = n;
9485 // src nodes must be replaced by tgt nodes to have tgt nodes in _simplices
9486 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
9487 // fix up incorrect uv of nodes on the FACE
9488 helper.GetNodeUV( F, n, 0, &isOkUV);
9493 //if ( nodesToSmooth.empty() ) continue;
9495 // Find EDGE's to shrink and set simpices to LayerEdge's
9496 set< _Shrinker1D* > eShri1D;
9498 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9500 _EdgesOnShape& eos = * subEOS[ iS ];
9501 if ( eos.SWOLType() == TopAbs_EDGE )
9503 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
9504 _Shrinker1D& srinker = e2shrMap[ edgeSM->GetId() ];
9505 eShri1D.insert( & srinker );
9506 srinker.AddEdge( eos._edges[0], eos, helper );
9507 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
9508 // restore params of nodes on EGDE if the EDGE has been already
9509 // srinked while srinking other FACE
9510 srinker.RestoreParams();
9512 for ( size_t i = 0; i < eos._edges.size(); ++i )
9514 _LayerEdge& edge = * eos._edges[i];
9515 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
9520 bool toFixTria = false; // to improve quality of trias by diagonal swap
9521 if ( isConcaveFace )
9523 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
9524 if ( hasTria != hasQuad ) {
9525 toFixTria = hasTria;
9528 set<int> nbNodesSet;
9529 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
9530 while ( fIt->more() && nbNodesSet.size() < 2 )
9531 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
9532 toFixTria = ( *nbNodesSet.begin() == 3 );
9536 // ==================
9537 // Perform shrinking
9538 // ==================
9540 bool shrinked = true;
9541 int nbBad, shriStep=0, smooStep=0;
9542 _SmoothNode::SmoothType smoothType
9543 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
9544 SMESH_Comment errMsg;
9548 // Move boundary nodes (actually just set new UV)
9549 // -----------------------------------------------
9550 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
9552 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9554 _EdgesOnShape& eos = * subEOS[ iS ];
9555 for ( size_t i = 0; i < eos._edges.size(); ++i )
9557 shrinked |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
9562 // Move nodes on EDGE's
9563 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
9564 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
9565 for ( ; shr != eShri1D.end(); ++shr )
9566 (*shr)->Compute( /*set3D=*/false, helper );
9569 // -----------------
9570 int nbNoImpSteps = 0;
9573 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
9575 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9577 int oldBadNb = nbBad;
9580 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
9581 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
9582 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9584 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
9585 smooTy, /*set3D=*/isConcaveFace);
9587 if ( nbBad < oldBadNb )
9597 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
9598 if ( shriStep > 200 )
9599 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
9600 if ( !errMsg.empty() )
9603 // Fix narrow triangles by swapping diagonals
9604 // ---------------------------------------
9607 set<const SMDS_MeshNode*> usedNodes;
9608 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
9610 // update working data
9611 set<const SMDS_MeshNode*>::iterator n;
9612 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
9614 n = usedNodes.find( nodesToSmooth[ i ]._node );
9615 if ( n != usedNodes.end())
9617 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
9618 nodesToSmooth[ i ]._simplices,
9620 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
9621 usedNodes.erase( n );
9624 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
9626 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
9627 if ( n != usedNodes.end())
9629 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
9630 lEdges[i]->_simplices,
9632 usedNodes.erase( n );
9636 // TODO: check effect of this additional smooth
9637 // additional laplacian smooth to increase allowed shrink step
9638 // for ( int st = 1; st; --st )
9640 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9641 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9643 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
9644 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
9648 } // while ( shrinked )
9650 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
9653 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
9655 vector< const SMDS_MeshElement* > facesToRm;
9658 facesToRm.reserve( psm->NbElements() );
9659 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
9660 facesToRm.push_back( ite->next() );
9662 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9663 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
9666 for ( size_t i = 0; i < facesToRm.size(); ++i )
9667 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
9671 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
9672 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
9673 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
9674 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
9675 subEOS[iS]->_edges[i]->_nodes.end() );
9677 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
9678 while ( itn->more() ) {
9679 const SMDS_MeshNode* n = itn->next();
9680 if ( !nodesToKeep.count( n ))
9681 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
9684 // restore position and UV of target nodes
9686 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9687 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
9689 _LayerEdge* edge = subEOS[iS]->_edges[i];
9690 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
9691 if ( edge->_pos.empty() ) continue;
9692 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
9694 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
9695 pos->SetUParameter( edge->_pos[0].X() );
9696 pos->SetVParameter( edge->_pos[0].Y() );
9697 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
9701 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
9702 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
9703 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
9705 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
9706 dumpMove( tgtNode );
9708 // shrink EDGE sub-meshes and set proxy sub-meshes
9709 UVPtStructVec uvPtVec;
9710 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
9711 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
9713 _Shrinker1D* shr = (*shrIt);
9714 shr->Compute( /*set3D=*/true, helper );
9716 // set proxy mesh of EDGEs w/o layers
9717 map< double, const SMDS_MeshNode* > nodes;
9718 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
9719 // remove refinement nodes
9720 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
9721 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
9722 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
9723 if ( u2n->second == sn0 || u2n->second == sn1 )
9725 while ( u2n->second != tn0 && u2n->second != tn1 )
9727 nodes.erase( nodes.begin(), u2n );
9729 u2n = --nodes.end();
9730 if ( u2n->second == sn0 || u2n->second == sn1 )
9732 while ( u2n->second != tn0 && u2n->second != tn1 )
9734 nodes.erase( ++u2n, nodes.end() );
9736 // set proxy sub-mesh
9737 uvPtVec.resize( nodes.size() );
9738 u2n = nodes.begin();
9739 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
9740 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
9742 uvPtVec[ i ].node = u2n->second;
9743 uvPtVec[ i ].param = u2n->first;
9744 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
9746 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
9747 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
9750 // set proxy mesh of EDGEs with layers
9751 vector< _LayerEdge* > edges;
9752 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
9754 _EdgesOnShape& eos = * subEOS[ iS ];
9755 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
9757 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
9758 data.SortOnEdge( E, eos._edges );
9761 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
9762 if ( !eov->_edges.empty() )
9763 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
9765 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
9767 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
9768 if ( !eov->_edges.empty() )
9769 edges.push_back( eov->_edges[0] ); // on last VERTEX
9771 uvPtVec.resize( edges.size() );
9772 for ( size_t i = 0; i < edges.size(); ++i )
9774 uvPtVec[ i ].node = edges[i]->_nodes.back();
9775 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
9776 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
9778 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
9779 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
9780 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
9782 // temporary clear the FACE sub-mesh from faces made by refine()
9783 vector< const SMDS_MeshElement* > elems;
9784 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
9785 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
9786 elems.push_back( ite->next() );
9787 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
9788 elems.push_back( ite->next() );
9791 // compute the mesh on the FACE
9792 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
9793 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
9795 // re-fill proxy sub-meshes of the FACE
9796 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
9797 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
9798 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
9799 psm->AddElement( ite->next() );
9802 for ( size_t i = 0; i < elems.size(); ++i )
9803 smDS->AddElement( elems[i] );
9805 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
9806 return error( errMsg );
9808 } // end of re-meshing in case of failed smoothing
9811 // No wrongly shaped faces remain; final smooth. Set node XYZ.
9812 bool isStructuredFixed = false;
9813 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
9814 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
9815 if ( !isStructuredFixed )
9817 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
9818 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
9820 for ( int st = 3; st; --st )
9823 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
9824 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
9825 case 3: smoothType = _SmoothNode::ANGULAR; break;
9827 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
9828 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9830 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
9831 smoothType,/*set3D=*/st==1 );
9836 if ( !getMeshDS()->IsEmbeddedMode() )
9837 // Log node movement
9838 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
9840 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
9841 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
9845 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
9846 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
9848 } // loop on FACES to srink mesh on
9851 // Replace source nodes by target nodes in shrinked mesh edges
9853 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
9854 for ( ; e2shr != e2shrMap.end(); ++e2shr )
9855 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
9860 //================================================================================
9862 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
9864 //================================================================================
9866 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
9868 SMESH_MesherHelper& helper,
9869 const SMESHDS_SubMesh* faceSubMesh)
9871 const SMDS_MeshNode* srcNode = edge._nodes[0];
9872 const SMDS_MeshNode* tgtNode = edge._nodes.back();
9874 if ( eos.SWOLType() == TopAbs_FACE )
9876 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
9879 return srcNode == tgtNode;
9881 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
9882 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
9883 gp_Vec2d uvDir( srcUV, tgtUV );
9884 double uvLen = uvDir.Magnitude();
9886 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
9889 edge._pos.resize(1);
9890 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
9892 // set UV of source node to target node
9893 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
9894 pos->SetUParameter( srcUV.X() );
9895 pos->SetVParameter( srcUV.Y() );
9897 else // _sWOL is TopAbs_EDGE
9899 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
9902 return srcNode == tgtNode;
9904 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
9905 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
9906 if ( !edgeSM || edgeSM->NbElements() == 0 )
9907 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
9909 const SMDS_MeshNode* n2 = 0;
9910 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
9911 while ( eIt->more() && !n2 )
9913 const SMDS_MeshElement* e = eIt->next();
9914 if ( !edgeSM->Contains(e)) continue;
9915 n2 = e->GetNode( 0 );
9916 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
9919 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
9921 double uSrc = helper.GetNodeU( E, srcNode, n2 );
9922 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
9923 double u2 = helper.GetNodeU( E, n2, srcNode );
9927 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
9929 // tgtNode is located so that it does not make faces with wrong orientation
9932 edge._pos.resize(1);
9933 edge._pos[0].SetCoord( U_TGT, uTgt );
9934 edge._pos[0].SetCoord( U_SRC, uSrc );
9935 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
9937 edge._simplices.resize( 1 );
9938 edge._simplices[0]._nPrev = n2;
9940 // set U of source node to the target node
9941 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
9942 pos->SetUParameter( uSrc );
9947 //================================================================================
9949 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
9951 //================================================================================
9953 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
9955 if ( edge._nodes.size() == 1 )
9960 const SMDS_MeshNode* srcNode = edge._nodes[0];
9961 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
9962 if ( S.IsNull() ) return;
9966 switch ( S.ShapeType() )
9971 TopLoc_Location loc;
9972 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
9973 if ( curve.IsNull() ) return;
9974 SMDS_EdgePosition* ePos = static_cast<SMDS_EdgePosition*>( srcNode->GetPosition() );
9975 p = curve->Value( ePos->GetUParameter() );
9980 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
9985 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
9986 dumpMove( srcNode );
9990 //================================================================================
9992 * \brief Try to fix triangles with high aspect ratio by swaping diagonals
9994 //================================================================================
9996 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
9997 SMESH_MesherHelper& helper,
10000 set<const SMDS_MeshNode*> * involvedNodes)
10002 SMESH::Controls::AspectRatio qualifier;
10003 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
10004 const double maxAspectRatio = is2D ? 4. : 2;
10005 _NodeCoordHelper xyz( F, helper, is2D );
10007 // find bad triangles
10009 vector< const SMDS_MeshElement* > badTrias;
10010 vector< double > badAspects;
10011 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
10012 SMDS_ElemIteratorPtr fIt = sm->GetElements();
10013 while ( fIt->more() )
10015 const SMDS_MeshElement * f = fIt->next();
10016 if ( f->NbCornerNodes() != 3 ) continue;
10017 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
10018 double aspect = qualifier.GetValue( points );
10019 if ( aspect > maxAspectRatio )
10021 badTrias.push_back( f );
10022 badAspects.push_back( aspect );
10027 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
10028 SMDS_ElemIteratorPtr fIt = sm->GetElements();
10029 while ( fIt->more() )
10031 const SMDS_MeshElement * f = fIt->next();
10032 if ( f->NbCornerNodes() == 3 )
10033 dumpChangeNodes( f );
10037 if ( badTrias.empty() )
10040 // find couples of faces to swap diagonal
10042 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
10043 vector< T2Trias > triaCouples;
10045 TIDSortedElemSet involvedFaces, emptySet;
10046 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
10049 double aspRatio [3];
10052 if ( !involvedFaces.insert( badTrias[iTia] ).second )
10054 for ( int iP = 0; iP < 3; ++iP )
10055 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
10057 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
10058 int bestCouple = -1;
10059 for ( int iSide = 0; iSide < 3; ++iSide )
10061 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
10062 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
10063 trias [iSide].first = badTrias[iTia];
10064 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
10066 if (( ! trias[iSide].second ) ||
10067 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
10068 ( ! sm->Contains( trias[iSide].second )))
10071 // aspect ratio of an adjacent tria
10072 for ( int iP = 0; iP < 3; ++iP )
10073 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
10074 double aspectInit = qualifier.GetValue( points2 );
10076 // arrange nodes as after diag-swaping
10077 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
10078 i3 = helper.WrapIndex( i1-1, 3 );
10080 i3 = helper.WrapIndex( i1+1, 3 );
10082 points1( 1+ iSide ) = points2( 1+ i3 );
10083 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
10085 // aspect ratio after diag-swaping
10086 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
10087 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
10090 // prevent inversion of a triangle
10091 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
10092 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
10093 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
10096 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
10097 bestCouple = iSide;
10100 if ( bestCouple >= 0 )
10102 triaCouples.push_back( trias[bestCouple] );
10103 involvedFaces.insert ( trias[bestCouple].second );
10107 involvedFaces.erase( badTrias[iTia] );
10110 if ( triaCouples.empty() )
10115 SMESH_MeshEditor editor( helper.GetMesh() );
10116 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
10117 for ( size_t i = 0; i < triaCouples.size(); ++i )
10119 dumpChangeNodes( triaCouples[i].first );
10120 dumpChangeNodes( triaCouples[i].second );
10121 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
10124 if ( involvedNodes )
10125 for ( size_t i = 0; i < triaCouples.size(); ++i )
10127 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
10128 triaCouples[i].first->end_nodes() );
10129 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
10130 triaCouples[i].second->end_nodes() );
10133 // just for debug dump resulting triangles
10134 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
10135 for ( size_t i = 0; i < triaCouples.size(); ++i )
10137 dumpChangeNodes( triaCouples[i].first );
10138 dumpChangeNodes( triaCouples[i].second );
10142 //================================================================================
10144 * \brief Move target node to it's final position on the FACE during shrinking
10146 //================================================================================
10148 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
10149 const TopoDS_Face& F,
10150 _EdgesOnShape& eos,
10151 SMESH_MesherHelper& helper )
10153 if ( _pos.empty() )
10154 return false; // already at the target position
10156 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
10158 if ( eos.SWOLType() == TopAbs_FACE )
10160 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
10161 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
10162 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
10163 const double uvLen = tgtUV.Distance( curUV );
10164 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
10166 // Select shrinking step such that not to make faces with wrong orientation.
10167 double stepSize = 1e100;
10168 for ( size_t i = 0; i < _simplices.size(); ++i )
10170 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
10171 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev );
10172 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext );
10173 gp_XY dirN = uvN2 - uvN1;
10174 double det = uvDir.Crossed( dirN );
10175 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
10176 gp_XY dirN2Cur = curUV - uvN1;
10177 double step = dirN.Crossed( dirN2Cur ) / det;
10179 stepSize = Min( step, stepSize );
10182 if ( uvLen <= stepSize )
10187 else if ( stepSize > 0 )
10189 newUV = curUV + uvDir.XY() * stepSize * kSafe;
10195 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( tgtNode->GetPosition() );
10196 pos->SetUParameter( newUV.X() );
10197 pos->SetVParameter( newUV.Y() );
10200 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
10201 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
10202 dumpMove( tgtNode );
10205 else // _sWOL is TopAbs_EDGE
10207 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
10208 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
10209 SMDS_EdgePosition* tgtPos = static_cast<SMDS_EdgePosition*>( tgtNode->GetPosition() );
10211 const double u2 = helper.GetNodeU( E, n2, tgtNode );
10212 const double uSrc = _pos[0].Coord( U_SRC );
10213 const double lenTgt = _pos[0].Coord( LEN_TGT );
10215 double newU = _pos[0].Coord( U_TGT );
10216 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
10222 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
10224 tgtPos->SetUParameter( newU );
10226 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
10227 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
10228 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
10229 dumpMove( tgtNode );
10236 //================================================================================
10238 * \brief Perform smooth on the FACE
10239 * \retval bool - true if the node has been moved
10241 //================================================================================
10243 bool _SmoothNode::Smooth(int& nbBad,
10244 Handle(Geom_Surface)& surface,
10245 SMESH_MesherHelper& helper,
10246 const double refSign,
10250 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
10252 // get uv of surrounding nodes
10253 vector<gp_XY> uv( _simplices.size() );
10254 for ( size_t i = 0; i < _simplices.size(); ++i )
10255 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
10257 // compute new UV for the node
10258 gp_XY newPos (0,0);
10259 if ( how == TFI && _simplices.size() == 4 )
10262 for ( size_t i = 0; i < _simplices.size(); ++i )
10263 if ( _simplices[i]._nOpp )
10264 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
10266 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
10268 newPos = helper.calcTFI ( 0.5, 0.5,
10269 corners[0], corners[1], corners[2], corners[3],
10270 uv[1], uv[2], uv[3], uv[0] );
10272 else if ( how == ANGULAR )
10274 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
10276 else if ( how == CENTROIDAL && _simplices.size() > 3 )
10278 // average centers of diagonals wieghted with their reciprocal lengths
10279 if ( _simplices.size() == 4 )
10281 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
10282 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
10283 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
10287 double sumWeight = 0;
10288 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
10289 for ( int i = 0; i < nb; ++i )
10292 int iTo = i + _simplices.size() - 1;
10293 for ( int j = iFrom; j < iTo; ++j )
10295 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
10296 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
10298 newPos += w * ( uv[i]+uv[i2] );
10301 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
10306 // Laplacian smooth
10307 for ( size_t i = 0; i < _simplices.size(); ++i )
10309 newPos /= _simplices.size();
10312 // count quality metrics (orientation) of triangles around the node
10313 int nbOkBefore = 0;
10314 gp_XY tgtUV = helper.GetNodeUV( face, _node );
10315 for ( size_t i = 0; i < _simplices.size(); ++i )
10316 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
10319 for ( size_t i = 0; i < _simplices.size(); ++i )
10320 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
10322 if ( nbOkAfter < nbOkBefore )
10324 nbBad += _simplices.size() - nbOkBefore;
10328 SMDS_FacePosition* pos = static_cast<SMDS_FacePosition*>( _node->GetPosition() );
10329 pos->SetUParameter( newPos.X() );
10330 pos->SetVParameter( newPos.Y() );
10337 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
10338 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
10342 nbBad += _simplices.size() - nbOkAfter;
10343 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
10346 //================================================================================
10348 * \brief Computes new UV using angle based smoothing technic
10350 //================================================================================
10352 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
10353 const gp_XY& uvToFix,
10354 const double refSign)
10356 uv.push_back( uv.front() );
10358 vector< gp_XY > edgeDir ( uv.size() );
10359 vector< double > edgeSize( uv.size() );
10360 for ( size_t i = 1; i < edgeDir.size(); ++i )
10362 edgeDir [i-1] = uv[i] - uv[i-1];
10363 edgeSize[i-1] = edgeDir[i-1].Modulus();
10364 if ( edgeSize[i-1] < numeric_limits<double>::min() )
10365 edgeDir[i-1].SetX( 100 );
10367 edgeDir[i-1] /= edgeSize[i-1] * refSign;
10369 edgeDir.back() = edgeDir.front();
10370 edgeSize.back() = edgeSize.front();
10374 double sumSize = 0;
10375 for ( size_t i = 1; i < edgeDir.size(); ++i )
10377 if ( edgeDir[i-1].X() > 1. ) continue;
10379 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
10380 if ( i == edgeDir.size() ) break;
10382 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
10383 gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
10384 gp_XY bisec = norm1 + norm2;
10385 double bisecSize = bisec.Modulus();
10386 if ( bisecSize < numeric_limits<double>::min() )
10388 bisec = -edgeDir[i1] + edgeDir[i];
10389 bisecSize = bisec.Modulus();
10391 bisec /= bisecSize;
10393 gp_XY dirToN = uvToFix - p;
10394 double distToN = dirToN.Modulus();
10395 if ( bisec * dirToN < 0 )
10396 distToN = -distToN;
10398 newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
10400 sumSize += edgeSize[i1] + edgeSize[i];
10402 newPos /= /*nbEdges * */sumSize;
10406 //================================================================================
10408 * \brief Delete _SolidData
10410 //================================================================================
10412 _SolidData::~_SolidData()
10414 TNode2Edge::iterator n2e = _n2eMap.begin();
10415 for ( ; n2e != _n2eMap.end(); ++n2e )
10417 _LayerEdge* & e = n2e->second;
10420 delete e->_curvature;
10421 if ( e->_2neibors )
10422 delete e->_2neibors->_plnNorm;
10423 delete e->_2neibors;
10434 //================================================================================
10436 * \brief Keep a _LayerEdge inflated along the EDGE
10438 //================================================================================
10440 void _Shrinker1D::AddEdge( const _LayerEdge* e,
10441 _EdgesOnShape& eos,
10442 SMESH_MesherHelper& helper )
10445 if ( _nodes.empty() )
10447 _edges[0] = _edges[1] = 0;
10450 // check _LayerEdge
10451 if ( e == _edges[0] || e == _edges[1] )
10453 if ( eos.SWOLType() != TopAbs_EDGE )
10454 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
10455 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
10456 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
10458 // store _LayerEdge
10459 _geomEdge = TopoDS::Edge( eos._sWOL );
10461 BRep_Tool::Range( _geomEdge, f,l );
10462 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
10463 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
10467 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
10468 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
10470 if ( _nodes.empty() )
10472 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
10473 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
10475 TopLoc_Location loc;
10476 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
10477 GeomAdaptor_Curve aCurve(C, f,l);
10478 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
10480 int nbExpectNodes = eSubMesh->NbNodes();
10481 _initU .reserve( nbExpectNodes );
10482 _normPar.reserve( nbExpectNodes );
10483 _nodes .reserve( nbExpectNodes );
10484 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
10485 while ( nIt->more() )
10487 const SMDS_MeshNode* node = nIt->next();
10488 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
10489 node == tgtNode0 || node == tgtNode1 )
10490 continue; // refinement nodes
10491 _nodes.push_back( node );
10492 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
10493 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
10494 _normPar.push_back( len / totLen );
10499 // remove target node of the _LayerEdge from _nodes
10500 size_t nbFound = 0;
10501 for ( size_t i = 0; i < _nodes.size(); ++i )
10502 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
10503 _nodes[i] = 0, nbFound++;
10504 if ( nbFound == _nodes.size() )
10509 //================================================================================
10511 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
10513 //================================================================================
10515 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
10517 if ( _done || _nodes.empty())
10519 const _LayerEdge* e = _edges[0];
10520 if ( !e ) e = _edges[1];
10523 _done = (( !_edges[0] || _edges[0]->_pos.empty() ) &&
10524 ( !_edges[1] || _edges[1]->_pos.empty() ));
10527 if ( set3D || _done )
10529 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
10530 GeomAdaptor_Curve aCurve(C, f,l);
10533 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
10535 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
10536 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
10538 for ( size_t i = 0; i < _nodes.size(); ++i )
10540 if ( !_nodes[i] ) continue;
10541 double len = totLen * _normPar[i];
10542 GCPnts_AbscissaPoint discret( aCurve, len, f );
10543 if ( !discret.IsDone() )
10544 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
10545 double u = discret.Parameter();
10546 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10547 pos->SetUParameter( u );
10548 gp_Pnt p = C->Value( u );
10549 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
10554 BRep_Tool::Range( _geomEdge, f,l );
10556 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
10558 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
10560 for ( size_t i = 0; i < _nodes.size(); ++i )
10562 if ( !_nodes[i] ) continue;
10563 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
10564 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10565 pos->SetUParameter( u );
10570 //================================================================================
10572 * \brief Restore initial parameters of nodes on EDGE
10574 //================================================================================
10576 void _Shrinker1D::RestoreParams()
10579 for ( size_t i = 0; i < _nodes.size(); ++i )
10581 if ( !_nodes[i] ) continue;
10582 SMDS_EdgePosition* pos = static_cast<SMDS_EdgePosition*>( _nodes[i]->GetPosition() );
10583 pos->SetUParameter( _initU[i] );
10588 //================================================================================
10590 * \brief Replace source nodes by target nodes in shrinked mesh edges
10592 //================================================================================
10594 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
10596 const SMDS_MeshNode* nodes[3];
10597 for ( int i = 0; i < 2; ++i )
10599 if ( !_edges[i] ) continue;
10601 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
10602 if ( !eSubMesh ) return;
10603 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
10604 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
10605 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
10606 while ( eIt->more() )
10608 const SMDS_MeshElement* e = eIt->next();
10609 if ( !eSubMesh->Contains( e ))
10611 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
10612 for ( int iN = 0; iN < e->NbNodes(); ++iN )
10614 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
10615 nodes[iN] = ( n == srcNode ? tgtNode : n );
10617 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
10622 //================================================================================
10624 * \brief Creates 2D and 1D elements on boundaries of new prisms
10626 //================================================================================
10628 bool _ViscousBuilder::addBoundaryElements()
10630 SMESH_MesherHelper helper( *_mesh );
10632 vector< const SMDS_MeshNode* > faceNodes;
10634 for ( size_t i = 0; i < _sdVec.size(); ++i )
10636 _SolidData& data = _sdVec[i];
10637 TopTools_IndexedMapOfShape geomEdges;
10638 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
10639 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
10641 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
10642 if ( data._noShrinkShapes.count( getMeshDS()->ShapeToIndex( E )))
10645 // Get _LayerEdge's based on E
10647 map< double, const SMDS_MeshNode* > u2nodes;
10648 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
10651 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
10652 TNode2Edge & n2eMap = data._n2eMap;
10653 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
10655 //check if 2D elements are needed on E
10656 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
10657 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
10658 ledges.push_back( n2e->second );
10660 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
10661 continue; // no layers on E
10662 ledges.push_back( n2eMap[ u2n->second ]);
10664 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
10665 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
10666 int nbSharedPyram = 0;
10667 SMDS_ElemIteratorPtr vIt = tgtN0->GetInverseElementIterator(SMDSAbs_Volume);
10668 while ( vIt->more() )
10670 const SMDS_MeshElement* v = vIt->next();
10671 nbSharedPyram += int( v->GetNodeIndex( tgtN1 ) >= 0 );
10673 if ( nbSharedPyram > 1 )
10674 continue; // not free border of the pyramid
10677 faceNodes.push_back( ledges[0]->_nodes[0] );
10678 faceNodes.push_back( ledges[1]->_nodes[0] );
10679 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
10680 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
10682 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
10683 continue; // faces already created
10685 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
10686 ledges.push_back( n2eMap[ u2n->second ]);
10688 // Find out orientation and type of face to create
10690 bool reverse = false, isOnFace;
10692 map< TGeomID, TopoDS_Shape >::iterator e2f =
10693 data._shrinkShape2Shape.find( getMeshDS()->ShapeToIndex( E ));
10695 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
10697 F = e2f->second.Oriented( TopAbs_FORWARD );
10698 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
10699 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
10700 reverse = !reverse, F.Reverse();
10701 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
10702 reverse = !reverse;
10706 // find FACE with layers sharing E
10707 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE );
10708 while ( fIt->more() && F.IsNull() )
10710 const TopoDS_Shape* pF = fIt->next();
10711 if ( helper.IsSubShape( *pF, data._solid) &&
10712 !data._ignoreFaceIds.count( e2f->first ))
10716 // Find the sub-mesh to add new faces
10717 SMESHDS_SubMesh* sm = 0;
10719 sm = getMeshDS()->MeshElements( F );
10721 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
10723 return error("error in addBoundaryElements()", data._index);
10726 const int dj1 = reverse ? 0 : 1;
10727 const int dj2 = reverse ? 1 : 0;
10728 for ( size_t j = 1; j < ledges.size(); ++j )
10730 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
10731 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
10732 if ( nn1.size() == nn2.size() )
10735 for ( size_t z = 1; z < nn1.size(); ++z )
10736 sm->AddElement( getMeshDS()->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
10738 for ( size_t z = 1; z < nn1.size(); ++z )
10739 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
10741 else if ( nn1.size() == 1 )
10744 for ( size_t z = 1; z < nn2.size(); ++z )
10745 sm->AddElement( getMeshDS()->AddFace( nn1[0], nn2[z-1], nn2[z] ));
10747 for ( size_t z = 1; z < nn2.size(); ++z )
10748 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
10753 for ( size_t z = 1; z < nn1.size(); ++z )
10754 sm->AddElement( getMeshDS()->AddFace( nn1[z-1], nn2[0], nn1[z] ));
10756 for ( size_t z = 1; z < nn1.size(); ++z )
10757 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
10762 for ( int isFirst = 0; isFirst < 2; ++isFirst )
10764 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
10765 _EdgesOnShape* eos = data.GetShapeEdges( edge );
10766 if ( eos && eos->SWOLType() == TopAbs_EDGE )
10768 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
10769 if ( nn.size() < 2 || nn[1]->GetInverseElementIterator( SMDSAbs_Edge )->more() )
10771 helper.SetSubShape( eos->_sWOL );
10772 helper.SetElementsOnShape( true );
10773 for ( size_t z = 1; z < nn.size(); ++z )
10774 helper.AddEdge( nn[z-1], nn[z] );
10778 } // loop on EDGE's
10779 } // loop on _SolidData's