1 // Copyright (C) 2007-2021 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 "ObjectPool.hxx"
27 #include "SMDS_EdgePosition.hxx"
28 #include "SMDS_FaceOfNodes.hxx"
29 #include "SMDS_FacePosition.hxx"
30 #include "SMDS_MeshNode.hxx"
31 #include "SMDS_PolygonalFaceOfNodes.hxx"
32 #include "SMDS_SetIterator.hxx"
33 #include "SMESHDS_Group.hxx"
34 #include "SMESHDS_Hypothesis.hxx"
35 #include "SMESHDS_Mesh.hxx"
36 #include "SMESH_Algo.hxx"
37 #include "SMESH_Block.hxx"
38 #include "SMESH_ComputeError.hxx"
39 #include "SMESH_ControlsDef.hxx"
40 #include "SMESH_Gen.hxx"
41 #include "SMESH_Group.hxx"
42 #include "SMESH_HypoFilter.hxx"
43 #include "SMESH_Mesh.hxx"
44 #include "SMESH_MeshAlgos.hxx"
45 #include "SMESH_MeshEditor.hxx"
46 #include "SMESH_MesherHelper.hxx"
47 #include "SMESH_ProxyMesh.hxx"
48 #include "SMESH_subMesh.hxx"
49 #include "SMESH_subMeshEventListener.hxx"
50 #include "StdMeshers_FaceSide.hxx"
51 #include "StdMeshers_ProjectionUtils.hxx"
52 #include "StdMeshers_Quadrangle_2D.hxx"
53 #include "StdMeshers_ViscousLayers2D.hxx"
55 #include <Adaptor3d_HSurface.hxx>
56 #include <BRepAdaptor_Curve.hxx>
57 #include <BRepAdaptor_Curve2d.hxx>
58 #include <BRepAdaptor_Surface.hxx>
59 #include <BRepLProp_SLProps.hxx>
60 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
61 #include <BRep_Tool.hxx>
62 #include <Bnd_B2d.hxx>
63 #include <Bnd_B3d.hxx>
65 #include <GCPnts_AbscissaPoint.hxx>
66 #include <GCPnts_TangentialDeflection.hxx>
67 #include <Geom2d_Circle.hxx>
68 #include <Geom2d_Line.hxx>
69 #include <Geom2d_TrimmedCurve.hxx>
70 #include <GeomAdaptor_Curve.hxx>
71 #include <GeomLib.hxx>
72 #include <Geom_Circle.hxx>
73 #include <Geom_Curve.hxx>
74 #include <Geom_Line.hxx>
75 #include <Geom_TrimmedCurve.hxx>
76 #include <Precision.hxx>
77 #include <Standard_ErrorHandler.hxx>
78 #include <Standard_Failure.hxx>
79 #include <TColStd_Array1OfReal.hxx>
81 #include <TopExp_Explorer.hxx>
82 #include <TopTools_IndexedMapOfShape.hxx>
83 #include <TopTools_ListOfShape.hxx>
84 #include <TopTools_MapIteratorOfMapOfShape.hxx>
85 #include <TopTools_MapOfShape.hxx>
87 #include <TopoDS_Edge.hxx>
88 #include <TopoDS_Face.hxx>
89 #include <TopoDS_Vertex.hxx>
91 #include <gp_Cone.hxx>
92 #include <gp_Sphere.hxx>
101 #include <unordered_map>
107 //#define __NOT_INVALIDATE_BAD_SMOOTH
108 //#define __NODES_AT_POS
111 #define INCREMENTAL_SMOOTH // smooth only if min angle is too small
112 #define BLOCK_INFLATION // of individual _LayerEdge's
113 #define OLD_NEF_POLYGON
117 //================================================================================
122 enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
124 const double theMinSmoothCosin = 0.1;
125 const double theSmoothThickToElemSizeRatio = 0.6;
126 const double theMinSmoothTriaAngle = 30;
127 const double theMinSmoothQuadAngle = 45;
129 // what part of thickness is allowed till intersection
130 // (defined by SALOME_TESTS/Grids/smesh/viscous_layers_00/A5)
131 const double theThickToIntersection = 1.5;
133 bool needSmoothing( double cosin, double tgtThick, double elemSize )
135 return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
137 double getSmoothingThickness( double cosin, double elemSize )
139 return theSmoothThickToElemSizeRatio * elemSize / cosin;
143 * \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
144 * It is stored in a SMESH_subMesh of the SOLID as SMESH_subMeshEventListenerData
146 struct _MeshOfSolid : public SMESH_ProxyMesh,
147 public SMESH_subMeshEventListenerData
149 bool _n2nMapComputed;
150 SMESH_ComputeErrorPtr _warning;
152 _MeshOfSolid( SMESH_Mesh* mesh)
153 :SMESH_subMeshEventListenerData( /*isDeletable=*/true),_n2nMapComputed(false)
155 SMESH_ProxyMesh::setMesh( *mesh );
158 // returns submesh for a geom face
159 SMESH_ProxyMesh::SubMesh* getFaceSubM(const TopoDS_Face& F, bool create=false)
161 TGeomID i = SMESH_ProxyMesh::shapeIndex(F);
162 return create ? SMESH_ProxyMesh::getProxySubMesh(i) : findProxySubMesh(i);
164 void setNode2Node(const SMDS_MeshNode* srcNode,
165 const SMDS_MeshNode* proxyNode,
166 const SMESH_ProxyMesh::SubMesh* subMesh)
168 SMESH_ProxyMesh::setNode2Node( srcNode,proxyNode,subMesh);
171 //--------------------------------------------------------------------------------
173 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
174 * It is used to clear an inferior dim sub-meshes modified by viscous layers
176 class _ShrinkShapeListener : SMESH_subMeshEventListener
178 _ShrinkShapeListener()
179 : SMESH_subMeshEventListener(/*isDeletable=*/false,
180 "StdMeshers_ViscousLayers::_ShrinkShapeListener") {}
182 static SMESH_subMeshEventListener* Get() { static _ShrinkShapeListener l; return &l; }
183 virtual void ProcessEvent(const int event,
185 SMESH_subMesh* solidSM,
186 SMESH_subMeshEventListenerData* data,
187 const SMESH_Hypothesis* hyp)
189 if ( SMESH_subMesh::COMPUTE_EVENT == eventType && solidSM->IsEmpty() && data )
191 SMESH_subMeshEventListener::ProcessEvent(event,eventType,solidSM,data,hyp);
195 //--------------------------------------------------------------------------------
197 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
198 * It is used to store data computed by _ViscousBuilder for a sub-mesh and to
199 * delete the data as soon as it has been used
201 class _ViscousListener : SMESH_subMeshEventListener
204 SMESH_subMeshEventListener(/*isDeletable=*/false,
205 "StdMeshers_ViscousLayers::_ViscousListener") {}
206 static SMESH_subMeshEventListener* Get() { static _ViscousListener l; return &l; }
208 virtual void ProcessEvent(const int event,
210 SMESH_subMesh* subMesh,
211 SMESH_subMeshEventListenerData* /*data*/,
212 const SMESH_Hypothesis* /*hyp*/)
214 if (( SMESH_subMesh::COMPUTE_EVENT == eventType ) &&
215 ( SMESH_subMesh::CHECK_COMPUTE_STATE != event &&
216 SMESH_subMesh::SUBMESH_COMPUTED != event ))
218 // delete SMESH_ProxyMesh containing temporary faces
219 subMesh->DeleteEventListener( this );
222 // Finds or creates proxy mesh of the solid
223 static _MeshOfSolid* GetSolidMesh(SMESH_Mesh* mesh,
224 const TopoDS_Shape& solid,
227 if ( !mesh ) return 0;
228 SMESH_subMesh* sm = mesh->GetSubMesh(solid);
229 _MeshOfSolid* data = (_MeshOfSolid*) sm->GetEventListenerData( Get() );
230 if ( !data && toCreate )
232 data = new _MeshOfSolid(mesh);
233 data->mySubMeshes.push_back( sm ); // to find SOLID by _MeshOfSolid
234 sm->SetEventListener( Get(), data, sm );
238 // Removes proxy mesh of the solid
239 static void RemoveSolidMesh(SMESH_Mesh* mesh, const TopoDS_Shape& solid)
241 mesh->GetSubMesh(solid)->DeleteEventListener( _ViscousListener::Get() );
245 //================================================================================
247 * \brief sets a sub-mesh event listener to clear sub-meshes of sub-shapes of
248 * the main shape when sub-mesh of the main shape is cleared,
249 * for example to clear sub-meshes of FACEs when sub-mesh of a SOLID
252 //================================================================================
254 void ToClearSubWithMain( SMESH_subMesh* sub, const TopoDS_Shape& main)
256 SMESH_subMesh* mainSM = sub->GetFather()->GetSubMesh( main );
257 SMESH_subMeshEventListenerData* data =
258 mainSM->GetEventListenerData( _ShrinkShapeListener::Get());
261 if ( find( data->mySubMeshes.begin(), data->mySubMeshes.end(), sub ) ==
262 data->mySubMeshes.end())
263 data->mySubMeshes.push_back( sub );
267 data = SMESH_subMeshEventListenerData::MakeData( /*dependent=*/sub );
268 sub->SetEventListener( _ShrinkShapeListener::Get(), data, /*whereToListenTo=*/mainSM );
272 //--------------------------------------------------------------------------------
274 * \brief Simplex (triangle or tetrahedron) based on 1 (tria) or 2 (tet) nodes of
275 * _LayerEdge and 2 nodes of the mesh surface beening smoothed.
276 * The class is used to check validity of face or volumes around a smoothed node;
277 * it stores only 2 nodes as the other nodes are stored by _LayerEdge.
281 const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
282 const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
283 _Simplex(const SMDS_MeshNode* nPrev=0,
284 const SMDS_MeshNode* nNext=0,
285 const SMDS_MeshNode* nOpp=0)
286 : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
287 bool IsForward(const gp_XYZ* pntSrc, const gp_XYZ* pntTgt, double& vol) const
289 const double M[3][3] =
290 {{ _nNext->X() - pntSrc->X(), _nNext->Y() - pntSrc->Y(), _nNext->Z() - pntSrc->Z() },
291 { pntTgt->X() - pntSrc->X(), pntTgt->Y() - pntSrc->Y(), pntTgt->Z() - pntSrc->Z() },
292 { _nPrev->X() - pntSrc->X(), _nPrev->Y() - pntSrc->Y(), _nPrev->Z() - pntSrc->Z() }};
293 vol = ( + M[0][0] * M[1][1] * M[2][2]
294 + M[0][1] * M[1][2] * M[2][0]
295 + M[0][2] * M[1][0] * M[2][1]
296 - M[0][0] * M[1][2] * M[2][1]
297 - M[0][1] * M[1][0] * M[2][2]
298 - M[0][2] * M[1][1] * M[2][0]);
301 bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ& pTgt, double& vol) const
303 SMESH_TNodeXYZ pSrc( nSrc );
304 return IsForward( &pSrc, &pTgt, vol );
306 bool IsForward(const gp_XY& tgtUV,
307 const SMDS_MeshNode* smoothedNode,
308 const TopoDS_Face& face,
309 SMESH_MesherHelper& helper,
310 const double refSign) const
312 gp_XY prevUV = helper.GetNodeUV( face, _nPrev, smoothedNode );
313 gp_XY nextUV = helper.GetNodeUV( face, _nNext, smoothedNode );
314 gp_Vec2d v1( tgtUV, prevUV ), v2( tgtUV, nextUV );
316 return d*refSign > 1e-100;
318 bool IsMinAngleOK( const gp_XYZ& pTgt, double& minAngle ) const
320 SMESH_TNodeXYZ pPrev( _nPrev ), pNext( _nNext );
321 if ( !_nOpp ) // triangle
323 gp_Vec tp( pPrev - pTgt ), pn( pNext - pPrev ), nt( pTgt - pNext );
324 double tp2 = tp.SquareMagnitude();
325 double pn2 = pn.SquareMagnitude();
326 double nt2 = nt.SquareMagnitude();
328 if ( tp2 < pn2 && tp2 < nt2 )
329 minAngle = ( nt * -pn ) * ( nt * -pn ) / nt2 / pn2;
330 else if ( pn2 < nt2 )
331 minAngle = ( tp * -nt ) * ( tp * -nt ) / tp2 / nt2;
333 minAngle = ( pn * -tp ) * ( pn * -tp ) / pn2 / tp2;
335 static double theMaxCos2 = ( Cos( theMinSmoothTriaAngle * M_PI / 180. ) *
336 Cos( theMinSmoothTriaAngle * M_PI / 180. ));
337 return minAngle < theMaxCos2;
341 SMESH_TNodeXYZ pOpp( _nOpp );
342 gp_Vec tp( pPrev - pTgt ), po( pOpp - pPrev ), on( pNext - pOpp), nt( pTgt - pNext );
343 double tp2 = tp.SquareMagnitude();
344 double po2 = po.SquareMagnitude();
345 double on2 = on.SquareMagnitude();
346 double nt2 = nt.SquareMagnitude();
347 minAngle = Max( Max((( tp * -nt ) * ( tp * -nt ) / tp2 / nt2 ),
348 (( po * -tp ) * ( po * -tp ) / po2 / tp2 )),
349 Max((( on * -po ) * ( on * -po ) / on2 / po2 ),
350 (( nt * -on ) * ( nt * -on ) / nt2 / on2 )));
352 static double theMaxCos2 = ( Cos( theMinSmoothQuadAngle * M_PI / 180. ) *
353 Cos( theMinSmoothQuadAngle * M_PI / 180. ));
354 return minAngle < theMaxCos2;
357 bool IsNeighbour(const _Simplex& other) const
359 return _nPrev == other._nNext || _nNext == other._nPrev;
361 bool Includes( const SMDS_MeshNode* node ) const { return _nPrev == node || _nNext == node; }
362 static void GetSimplices( const SMDS_MeshNode* node,
363 vector<_Simplex>& simplices,
364 const set<TGeomID>& ingnoreShapes,
365 const _SolidData* dataToCheckOri = 0,
366 const bool toSort = false);
367 static void SortSimplices(vector<_Simplex>& simplices);
369 //--------------------------------------------------------------------------------
371 * Structure used to take into account surface curvature while smoothing
376 double _k; // factor to correct node smoothed position
377 double _h2lenRatio; // avgNormProj / (2*avgDist)
378 gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
380 static _Curvature* New( double avgNormProj, double avgDist );
381 double lenDelta(double len) const { return _k * ( _r + len ); }
382 double lenDeltaByDist(double dist) const { return dist * _h2lenRatio; }
384 //--------------------------------------------------------------------------------
388 struct _EdgesOnShape;
391 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
393 //--------------------------------------------------------------------------------
395 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
396 * and a node of the most internal layer (_nodes.back())
400 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
402 vector< const SMDS_MeshNode*> _nodes;
404 gp_XYZ _normal; // to boundary of solid
405 vector<gp_XYZ> _pos; // points computed during inflation
406 double _len; // length achieved with the last inflation step
407 double _maxLen; // maximal possible length
408 double _cosin; // of angle (_normal ^ surface)
409 double _minAngle; // of _simplices
410 double _lenFactor; // to compute _len taking _cosin into account
413 // simplices connected to the source node (_nodes[0]);
414 // used for smoothing and quality check of _LayerEdge's based on the FACE
415 vector<_Simplex> _simplices;
416 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
417 PSmooFun _smooFunction; // smoothing function
418 _Curvature* _curvature;
419 // data for smoothing of _LayerEdge's based on the EDGE
420 _2NearEdges* _2neibors;
422 enum EFlags { TO_SMOOTH = 0x0000001,
423 MOVED = 0x0000002, // set by _neibors[i]->SetNewLength()
424 SMOOTHED = 0x0000004, // set by _LayerEdge::Smooth()
425 DIFFICULT = 0x0000008, // near concave VERTEX
426 ON_CONCAVE_FACE = 0x0000010,
427 BLOCKED = 0x0000020, // not to inflate any more
428 INTERSECTED = 0x0000040, // close intersection with a face found
429 NORMAL_UPDATED = 0x0000080,
430 UPD_NORMAL_CONV = 0x0000100, // to update normal on boundary of concave FACE
431 MARKED = 0x0000200, // local usage
432 MULTI_NORMAL = 0x0000400, // a normal is invisible by some of surrounding faces
433 NEAR_BOUNDARY = 0x0000800, // is near FACE boundary forcing smooth
434 SMOOTHED_C1 = 0x0001000, // is on _eosC1
435 DISTORTED = 0x0002000, // was bad before smoothing
436 RISKY_SWOL = 0x0004000, // SWOL is parallel to a source FACE
437 SHRUNK = 0x0008000, // target node reached a tgt position while shrink()
438 UNUSED_FLAG = 0x0100000 // to add user flags after
440 bool Is ( int flag ) const { return _flags & flag; }
441 void Set ( int flag ) { _flags |= flag; }
442 void Unset( int flag ) { _flags &= ~flag; }
443 std::string DumpFlags() const; // debug
445 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
446 bool SetNewLength2d( Handle(Geom_Surface)& surface,
447 const TopoDS_Face& F,
449 SMESH_MesherHelper& helper );
450 bool UpdatePositionOnSWOL( SMDS_MeshNode* n,
453 SMESH_MesherHelper& helper );
454 void SetDataByNeighbors( const SMDS_MeshNode* n1,
455 const SMDS_MeshNode* n2,
456 const _EdgesOnShape& eos,
457 SMESH_MesherHelper& helper);
458 void Block( _SolidData& data );
459 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
460 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
461 const TNode2Edge& n2eMap);
462 void SmoothPos( const vector< double >& segLen, const double tol );
463 int GetSmoothedPos( const double tol );
464 int Smooth(const int step, const bool isConcaveFace, bool findBest);
465 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
466 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
467 void SmoothWoCheck();
468 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
469 const TopoDS_Face& F,
470 SMESH_MesherHelper& helper);
471 void MoveNearConcaVer( const _EdgesOnShape* eov,
472 const _EdgesOnShape* eos,
474 vector< _LayerEdge* > & badSmooEdges);
475 bool FindIntersection( SMESH_ElementSearcher& searcher,
477 const double& epsilon,
479 const SMDS_MeshElement** face = 0);
480 bool SegTriaInter( const gp_Ax1& lastSegment,
485 const double& epsilon) const;
486 bool SegTriaInter( const gp_Ax1& lastSegment,
487 const SMDS_MeshNode* n0,
488 const SMDS_MeshNode* n1,
489 const SMDS_MeshNode* n2,
491 const double& epsilon) const
492 { return SegTriaInter( lastSegment,
493 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
496 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
497 gp_XYZ PrevCheckPos( _EdgesOnShape* eos=0 ) const;
498 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
499 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which=-1 ) const;
500 bool IsOnEdge() const { return _2neibors; }
501 bool IsOnFace() const { return ( _nodes[0]->GetPosition()->GetDim() == 2 ); }
502 int BaseShapeDim() const { return _nodes[0]->GetPosition()->GetDim(); }
503 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
504 double SetCosin( double cosin );
505 void SetNormal( const gp_XYZ& n ) { _normal = n; }
506 void SetMaxLen( double l ) { _maxLen = l; }
507 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
508 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
509 void SetSmooLen( double len ) { // set _len at which smoothing is needed
510 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
512 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
514 gp_XYZ smoothLaplacian();
515 gp_XYZ smoothAngular();
516 gp_XYZ smoothLengthWeighted();
517 gp_XYZ smoothCentroidal();
518 gp_XYZ smoothNefPolygon();
520 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
521 static const int theNbSmooFuns = FUN_NB;
522 static PSmooFun _funs[theNbSmooFuns];
523 static const char* _funNames[theNbSmooFuns+1];
524 int smooFunID( PSmooFun fun=0) const;
526 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
527 &_LayerEdge::smoothLengthWeighted,
528 &_LayerEdge::smoothCentroidal,
529 &_LayerEdge::smoothNefPolygon,
530 &_LayerEdge::smoothAngular };
531 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
539 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
541 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
542 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
545 //--------------------------------------------------------------------------------
547 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
551 gp_XY _pos, _dir, _inNorm;
552 bool IsOut( const gp_XY p, const double tol ) const
554 return _inNorm * ( p - _pos ) < -tol;
556 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
558 //const double eps = 1e-10;
559 double D = _dir.Crossed( hp._dir );
560 if ( fabs(D) < std::numeric_limits<double>::min())
562 gp_XY vec21 = _pos - hp._pos;
563 double u = hp._dir.Crossed( vec21 ) / D;
564 intPnt = _pos + _dir * u;
568 //--------------------------------------------------------------------------------
570 * Structure used to smooth a _LayerEdge based on an EDGE.
574 double _wgt [2]; // weights of _nodes
575 _LayerEdge* _edges[2];
577 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
580 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
581 ~_2NearEdges(){ delete _plnNorm; }
582 const SMDS_MeshNode* tgtNode(bool is2nd) {
583 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
585 const SMDS_MeshNode* srcNode(bool is2nd) {
586 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
589 std::swap( _wgt [0], _wgt [1] );
590 std::swap( _edges[0], _edges[1] );
592 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
593 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
595 bool include( const _LayerEdge* e ) {
596 return ( _edges[0] == e || _edges[1] == e );
601 //--------------------------------------------------------------------------------
603 * \brief Layers parameters got by averaging several hypotheses
607 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
608 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
612 void Add( const StdMeshers_ViscousLayers* hyp )
617 _nbLayers = hyp->GetNumberLayers();
618 //_thickness += hyp->GetTotalThickness();
619 _thickness = Max( _thickness, hyp->GetTotalThickness() );
620 _stretchFactor += hyp->GetStretchFactor();
621 _method = hyp->GetMethod();
622 if ( _groupName.empty() )
623 _groupName = hyp->GetGroupName();
626 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
627 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
628 int GetNumberLayers() const { return _nbLayers; }
629 int GetMethod() const { return _method; }
630 bool ToCreateGroup() const { return !_groupName.empty(); }
631 const std::string& GetGroupName() const { return _groupName; }
633 double Get1stLayerThickness( double realThickness = 0.) const
635 const double T = ( realThickness > 0 ) ? realThickness : GetTotalThickness();
636 const double f = GetStretchFactor();
637 const int N = GetNumberLayers();
638 const double fPowN = pow( f, N );
640 if ( fPowN - 1 <= numeric_limits<double>::min() )
643 h0 = T * ( f - 1 )/( fPowN - 1 );
647 bool UseSurfaceNormal() const
648 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
649 bool ToSmooth() const
650 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
651 bool IsOffsetMethod() const
652 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
654 bool operator==( const AverageHyp& other ) const
656 return ( _nbLayers == other._nbLayers &&
657 _method == other._method &&
658 Equals( GetTotalThickness(), other.GetTotalThickness() ) &&
659 Equals( GetStretchFactor(), other.GetStretchFactor() ));
661 static bool Equals( double v1, double v2 ) { return Abs( v1 - v2 ) < 0.01 * ( v1 + v2 ); }
664 int _nbLayers, _nbHyps, _method;
665 double _thickness, _stretchFactor;
666 std::string _groupName;
669 //--------------------------------------------------------------------------------
671 * \brief _LayerEdge's on a shape and other shape data
675 vector< _LayerEdge* > _edges;
679 SMESH_subMesh * _subMesh;
680 // face or edge w/o layer along or near which _edges are inflated
682 bool _isRegularSWOL; // w/o singularities
683 // averaged StdMeshers_ViscousLayers parameters
686 _Smoother1D* _edgeSmoother;
687 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
688 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
690 typedef std::unordered_map< const SMDS_MeshElement*, gp_XYZ > TFace2NormMap;
691 TFace2NormMap _faceNormals; // if _shape is FACE
692 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
694 Handle(ShapeAnalysis_Surface) _offsetSurf;
695 _LayerEdge* _edgeForOffset;
697 _Mapper2D* _mapper2D;
699 _SolidData* _data; // parent SOLID
701 _LayerEdge* operator[](size_t i) const { return (_LayerEdge*) _edges[i]; }
702 size_t size() const { return _edges.size(); }
703 TopAbs_ShapeEnum ShapeType() const
704 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
705 TopAbs_ShapeEnum SWOLType() const
706 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
707 bool HasC1( const _EdgesOnShape* other ) const
708 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
709 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
710 _SolidData& GetData() const { return *_data; }
711 char ShapeTypeLetter() const
712 { switch ( ShapeType() ) { case TopAbs_FACE: return 'F'; case TopAbs_EDGE: return 'E';
713 case TopAbs_VERTEX: return 'V'; default: return 'S'; }}
715 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0), _mapper2D(0) {}
719 //--------------------------------------------------------------------------------
721 * \brief Convex FACE whose radius of curvature is less than the thickness of
722 * layers. It is used to detect distortion of prisms based on a convex
723 * FACE and to update normals to enable further increasing the thickness
729 // edges whose _simplices are used to detect prism distortion
730 vector< _LayerEdge* > _simplexTestEdges;
732 // map a sub-shape to _SolidData::_edgesOnShape
733 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
737 bool _normalsFixedOnBorders; // used in putOnOffsetSurface()
739 double GetMaxCurvature( _SolidData& data,
741 BRepLProp_SLProps& surfProp,
742 SMESH_MesherHelper& helper);
744 bool GetCenterOfCurvature( _LayerEdge* ledge,
745 BRepLProp_SLProps& surfProp,
746 SMESH_MesherHelper& helper,
747 gp_Pnt & center ) const;
748 bool CheckPrisms() const;
751 //--------------------------------------------------------------------------------
753 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
754 * at inflation up to the full thickness. A detected collision
755 * is fixed in updateNormals()
757 struct _CollisionEdges
760 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
761 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
762 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
765 //--------------------------------------------------------------------------------
767 * \brief Data of a SOLID
771 typedef const StdMeshers_ViscousLayers* THyp;
773 TopTools_MapOfShape _before; // SOLIDs to be computed before _solid
774 TGeomID _index; // SOLID id
775 _MeshOfSolid* _proxyMesh;
778 list< TopoDS_Shape > _hypShapes;
779 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
780 set< TGeomID > _reversedFaceIds;
781 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
783 double _stepSize, _stepSizeCoeff, _geomSize;
784 const SMDS_MeshNode* _stepSizeNodes[2];
786 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
788 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
789 map< TGeomID, TNode2Edge* > _s2neMap;
790 // _LayerEdge's with underlying shapes
791 vector< _EdgesOnShape > _edgesOnShape;
793 // key: an ID of shape (EDGE or VERTEX) shared by a FACE with
794 // layers and a FACE w/o layers
795 // value: the shape (FACE or EDGE) to shrink mesh on.
796 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
797 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
799 // Convex FACEs whose radius of curvature is less than the thickness of layers
800 map< TGeomID, _ConvexFace > _convexFaces;
802 // shapes (EDGEs and VERTEXes) shrink from which is forbidden due to collisions with
803 // the adjacent SOLID
804 set< TGeomID > _noShrinkShapes;
806 int _nbShapesToSmooth;
808 vector< _CollisionEdges > _collisionEdges;
809 set< TGeomID > _concaveFaces;
811 double _maxThickness; // of all _hyps
812 double _minThickness; // of all _hyps
814 double _epsilon; // precision for SegTriaInter()
816 SMESH_MesherHelper* _helper;
818 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
820 :_solid(s), _proxyMesh(m), _done(false),_helper(0) {}
821 ~_SolidData() { delete _helper; _helper = 0; }
823 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
824 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
826 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
827 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
828 return id2face == _convexFaces.end() ? 0 : & id2face->second;
830 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
831 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
832 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
833 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
835 SMESH_MesherHelper& GetHelper() const { return *_helper; }
837 void UnmarkEdges( int flag = _LayerEdge::MARKED ) {
838 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
839 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
840 _edgesOnShape[i]._edges[j]->Unset( flag );
842 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
843 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
845 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
847 //--------------------------------------------------------------------------------
849 * \brief Offset plane used in getNormalByOffset()
855 int _faceIndexNext[2];
856 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
859 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
861 void ComputeIntersectionLine( _OffsetPlane& pln,
862 const TopoDS_Edge& E,
863 const TopoDS_Vertex& V );
864 gp_XYZ GetCommonPoint(bool& isFound, const TopoDS_Vertex& V) const;
865 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
867 //--------------------------------------------------------------------------------
869 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
871 struct _CentralCurveOnEdge
874 vector< gp_Pnt > _curvaCenters;
875 vector< _LayerEdge* > _ledges;
876 vector< gp_XYZ > _normals; // new normal for each of _ledges
877 vector< double > _segLength2;
880 TopoDS_Face _adjFace;
881 bool _adjFaceToSmooth;
883 void Append( const gp_Pnt& center, _LayerEdge* ledge )
885 if ( ledge->Is( _LayerEdge::MULTI_NORMAL ))
887 if ( _curvaCenters.size() > 0 )
888 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
889 _curvaCenters.push_back( center );
890 _ledges.push_back( ledge );
891 _normals.push_back( ledge->_normal );
893 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
894 void SetShapes( const TopoDS_Edge& edge,
895 const _ConvexFace& convFace,
897 SMESH_MesherHelper& helper);
899 //--------------------------------------------------------------------------------
901 * \brief Data of node on a shrinked FACE
905 const SMDS_MeshNode* _node;
906 vector<_Simplex> _simplices; // for quality check
908 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
910 bool Smooth(int& badNb,
911 Handle(Geom_Surface)& surface,
912 SMESH_MesherHelper& helper,
913 const double refSign,
917 gp_XY computeAngularPos(vector<gp_XY>& uv,
918 const gp_XY& uvToFix,
919 const double refSign );
923 //--------------------------------------------------------------------------------
925 * \brief Builder of viscous layers
927 class _ViscousBuilder
932 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
933 const TopoDS_Shape& shape);
934 // check validity of hypotheses
935 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
936 const TopoDS_Shape& shape );
938 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
939 void RestoreListeners();
941 // computes SMESH_ProxyMesh::SubMesh::_n2n;
942 bool MakeN2NMap( _MeshOfSolid* pm );
946 bool findSolidsWithLayers(const bool checkFaceMesh=true);
947 bool setBefore( _SolidData& solidBefore, _SolidData& solidAfter );
948 bool findFacesWithLayers(const bool onlyWith=false);
949 void findPeriodicFaces();
950 void getIgnoreFaces(const TopoDS_Shape& solid,
951 const StdMeshers_ViscousLayers* hyp,
952 const TopoDS_Shape& hypShape,
953 set<TGeomID>& ignoreFaces);
954 int makeEdgesOnShape();
955 bool makeLayer(_SolidData& data);
956 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
957 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
958 SMESH_MesherHelper& helper, _SolidData& data);
959 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
960 const TopoDS_Face& face,
961 SMESH_MesherHelper& helper,
963 bool shiftInside=false);
964 bool getFaceNormalAtSingularity(const gp_XY& uv,
965 const TopoDS_Face& face,
966 SMESH_MesherHelper& helper,
968 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
969 gp_XYZ getNormalByOffset( _LayerEdge* edge,
970 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
972 bool lastNoOffset = false);
973 bool findNeiborsOnEdge(const _LayerEdge* edge,
974 const SMDS_MeshNode*& n1,
975 const SMDS_MeshNode*& n2,
978 void findSimplexTestEdges( _SolidData& data,
979 vector< vector<_LayerEdge*> >& edgesByGeom);
980 void computeGeomSize( _SolidData& data );
981 bool findShapesToSmooth( _SolidData& data);
982 void limitStepSizeByCurvature( _SolidData& data );
983 void limitStepSize( _SolidData& data,
984 const SMDS_MeshElement* face,
985 const _LayerEdge* maxCosinEdge );
986 void limitStepSize( _SolidData& data, const double minSize);
987 bool inflate(_SolidData& data);
988 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
989 int invalidateBadSmooth( _SolidData& data,
990 SMESH_MesherHelper& helper,
991 vector< _LayerEdge* >& badSmooEdges,
992 vector< _EdgesOnShape* >& eosC1,
994 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
995 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep,
996 vector< _EdgesOnShape* >& eosC1,
997 int smooStep=0, int moveAll=false );
998 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
999 void findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
1001 SMESH_MesherHelper& helper );
1002 void limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper );
1003 void limitMaxLenByCurvature( _LayerEdge* e1, _LayerEdge* e2,
1004 _EdgesOnShape& eos1, _EdgesOnShape& eos2,
1005 const bool isSmoothable );
1006 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
1007 bool updateNormalsOfConvexFaces( _SolidData& data,
1008 SMESH_MesherHelper& helper,
1010 void updateNormalsOfC1Vertices( _SolidData& data );
1011 bool updateNormalsOfSmoothed( _SolidData& data,
1012 SMESH_MesherHelper& helper,
1014 const double stepSize );
1015 bool isNewNormalOk( _SolidData& data,
1017 const gp_XYZ& newNormal);
1018 bool refine(_SolidData& data);
1019 bool shrink(_SolidData& data);
1020 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
1021 SMESH_MesherHelper& helper,
1022 const SMESHDS_SubMesh* faceSubMesh );
1023 void restoreNoShrink( _LayerEdge& edge ) const;
1024 void fixBadFaces(const TopoDS_Face& F,
1025 SMESH_MesherHelper& helper,
1028 set<const SMDS_MeshNode*> * involvedNodes=NULL);
1029 bool addBoundaryElements(_SolidData& data);
1031 bool error( const string& text, int solidID=-1 );
1032 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
1035 void makeGroupOfLE();
1038 SMESH_ComputeErrorPtr _error;
1040 vector< _SolidData > _sdVec;
1041 TopTools_IndexedMapOfShape _solids; // to find _SolidData by a solid
1042 TopTools_MapOfShape _shrunkFaces;
1043 std::unique_ptr<Periodicity> _periodicity;
1048 //--------------------------------------------------------------------------------
1050 * \brief Shrinker of nodes on the EDGE
1054 TopoDS_Edge _geomEdge;
1055 vector<double> _initU;
1056 vector<double> _normPar;
1057 vector<const SMDS_MeshNode*> _nodes;
1058 const _LayerEdge* _edges[2];
1061 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
1062 void Compute(bool set3D, SMESH_MesherHelper& helper);
1063 void RestoreParams();
1064 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
1065 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
1066 const SMDS_MeshNode* TgtNode( bool is2nd ) const
1067 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
1068 const SMDS_MeshNode* SrcNode( bool is2nd ) const
1069 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
1071 //--------------------------------------------------------------------------------
1073 * \brief Smoother of _LayerEdge's on EDGE.
1077 struct OffPnt // point of the offsetted EDGE
1079 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1080 double _len; // length reached at previous inflation step
1081 double _param; // on EDGE
1082 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1083 gp_XYZ _edgeDir;// EDGE tangent at _param
1084 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1086 vector< OffPnt > _offPoints;
1087 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1088 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1089 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1090 gp_XYZ _edgeDir[2]; // tangent at VERTEXes
1091 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1092 _EdgesOnShape& _eos;
1093 double _curveLen; // length of the EDGE
1094 std::pair<int,int> _eToSmooth[2]; // <from,to> indices of _LayerEdge's in _eos
1096 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1098 SMESH_MesherHelper& helper);
1100 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1101 _EdgesOnShape& eos )
1102 : _anaCurve( curveForSmooth ), _eos( eos )
1105 bool Perform(_SolidData& data,
1106 Handle(ShapeAnalysis_Surface)& surface,
1107 const TopoDS_Face& F,
1108 SMESH_MesherHelper& helper );
1110 void prepare(_SolidData& data );
1112 void findEdgesToSmooth();
1114 bool isToSmooth( int iE );
1116 bool smoothAnalyticEdge( _SolidData& data,
1117 Handle(ShapeAnalysis_Surface)& surface,
1118 const TopoDS_Face& F,
1119 SMESH_MesherHelper& helper);
1120 bool smoothComplexEdge( _SolidData& data,
1121 Handle(ShapeAnalysis_Surface)& surface,
1122 const TopoDS_Face& F,
1123 SMESH_MesherHelper& helper);
1124 gp_XYZ getNormalNormal( const gp_XYZ & normal,
1125 const gp_XYZ& edgeDir);
1126 _LayerEdge* getLEdgeOnV( bool is2nd )
1128 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1130 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1132 void offPointsToPython() const; // debug
1135 //--------------------------------------------------------------------------------
1137 * \brief Compute positions of nodes of 2D structured mesh using TFI
1141 FaceQuadStruct _quadPoints;
1143 UVPtStruct& uvPnt( size_t i, size_t j ) { return _quadPoints.UVPt( i, j ); }
1146 _Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap );
1147 bool ComputeNodePositions();
1150 //--------------------------------------------------------------------------------
1152 * \brief Class of temporary mesh face.
1153 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1154 * needed because SMESH_ElementSearcher internally uses set of elements sorted by ID
1156 struct _TmpMeshFace : public SMDS_PolygonalFaceOfNodes
1158 const SMDS_MeshElement* _srcFace;
1160 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1163 const SMDS_MeshElement* srcFace=0 ):
1164 SMDS_PolygonalFaceOfNodes(nodes), _srcFace( srcFace ) { setID( ID ); setShapeID( faceID ); }
1165 virtual SMDSAbs_EntityType GetEntityType() const
1166 { return _srcFace ? _srcFace->GetEntityType() : SMDSEntity_Quadrangle; }
1167 virtual SMDSAbs_GeometryType GetGeomType() const
1168 { return _srcFace ? _srcFace->GetGeomType() : SMDSGeom_QUADRANGLE; }
1170 //--------------------------------------------------------------------------------
1172 * \brief Class of temporary mesh quadrangle face storing _LayerEdge it's based on
1174 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1176 _LayerEdge *_le1, *_le2;
1177 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1178 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1180 myNodes[0]=_le1->_nodes[0];
1181 myNodes[1]=_le1->_nodes.back();
1182 myNodes[2]=_le2->_nodes.back();
1183 myNodes[3]=_le2->_nodes[0];
1185 const SMDS_MeshNode* n( size_t i ) const
1187 return myNodes[ i ];
1189 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1191 SMESH_TNodeXYZ p0s( myNodes[0] );
1192 SMESH_TNodeXYZ p0t( myNodes[1] );
1193 SMESH_TNodeXYZ p1t( myNodes[2] );
1194 SMESH_TNodeXYZ p1s( myNodes[3] );
1195 gp_XYZ v0 = p0t - p0s;
1196 gp_XYZ v1 = p1t - p1s;
1197 gp_XYZ v01 = p1s - p0s;
1198 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1203 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1205 myNodes[0]=le1->_nodes[0];
1206 myNodes[1]=le1->_nodes.back();
1207 myNodes[2]=le2->_nodes.back();
1208 myNodes[3]=le2->_nodes[0];
1212 //--------------------------------------------------------------------------------
1214 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1215 * \warning Location of a surface is ignored
1217 struct _NodeCoordHelper
1219 SMESH_MesherHelper& _helper;
1220 const TopoDS_Face& _face;
1221 Handle(Geom_Surface) _surface;
1222 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1224 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1225 : _helper( helper ), _face( F )
1229 TopLoc_Location loc;
1230 _surface = BRep_Tool::Surface( _face, loc );
1232 if ( _surface.IsNull() )
1233 _fun = & _NodeCoordHelper::direct;
1235 _fun = & _NodeCoordHelper::byUV;
1237 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1240 gp_XYZ direct(const SMDS_MeshNode* n) const
1242 return SMESH_TNodeXYZ( n );
1244 gp_XYZ byUV (const SMDS_MeshNode* n) const
1246 gp_XY uv = _helper.GetNodeUV( _face, n );
1247 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1251 //================================================================================
1253 * \brief Check angle between vectors
1255 //================================================================================
1257 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1259 double dot = v1 * v2; // cos * |v1| * |v2|
1260 double l1 = v1.SquareMagnitude();
1261 double l2 = v2.SquareMagnitude();
1262 return (( dot * cos >= 0 ) &&
1263 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1268 ObjectPool< _LayerEdge > _edgePool;
1269 ObjectPool< _Curvature > _curvaturePool;
1270 ObjectPool< _2NearEdges > _nearEdgesPool;
1272 static _Factory* & me()
1274 static _Factory* theFactory = 0;
1279 _Factory() { me() = this; }
1280 ~_Factory() { me() = 0; }
1282 static _LayerEdge* NewLayerEdge() { return me()->_edgePool.getNew(); }
1283 static _Curvature * NewCurvature() { return me()->_curvaturePool.getNew(); }
1284 static _2NearEdges* NewNearEdges() { return me()->_nearEdgesPool.getNew(); }
1287 } // namespace VISCOUS_3D
1291 //================================================================================
1292 // StdMeshers_ViscousLayers hypothesis
1294 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, SMESH_Gen* gen)
1295 :SMESH_Hypothesis(hypId, gen),
1296 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1297 _method( SURF_OFFSET_SMOOTH ),
1300 _name = StdMeshers_ViscousLayers::GetHypType();
1301 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1302 } // --------------------------------------------------------------------------------
1303 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1305 if ( faceIds != _shapeIds )
1306 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1307 if ( _isToIgnoreShapes != toIgnore )
1308 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1309 } // --------------------------------------------------------------------------------
1310 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1312 if ( thickness != _thickness )
1313 _thickness = thickness, NotifySubMeshesHypothesisModification();
1314 } // --------------------------------------------------------------------------------
1315 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1317 if ( _nbLayers != nb )
1318 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1319 } // --------------------------------------------------------------------------------
1320 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1322 if ( _stretchFactor != factor )
1323 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1324 } // --------------------------------------------------------------------------------
1325 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1327 if ( _method != method )
1328 _method = method, NotifySubMeshesHypothesisModification();
1329 } // --------------------------------------------------------------------------------
1330 void StdMeshers_ViscousLayers::SetGroupName(const std::string& name)
1332 if ( _groupName != name )
1335 if ( !_groupName.empty() )
1336 NotifySubMeshesHypothesisModification();
1338 } // --------------------------------------------------------------------------------
1339 SMESH_ProxyMesh::Ptr
1340 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1341 const TopoDS_Shape& theShape,
1342 const bool toMakeN2NMap) const
1344 using namespace VISCOUS_3D;
1345 _ViscousBuilder builder;
1346 SMESH_ComputeErrorPtr err = builder.Compute( theMesh, theShape );
1347 if ( err && !err->IsOK() )
1348 return SMESH_ProxyMesh::Ptr();
1350 vector<SMESH_ProxyMesh::Ptr> components;
1351 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1352 for ( ; exp.More(); exp.Next() )
1354 if ( _MeshOfSolid* pm =
1355 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1357 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1358 if ( !builder.MakeN2NMap( pm ))
1359 return SMESH_ProxyMesh::Ptr();
1360 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1361 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1363 if ( pm->_warning && !pm->_warning->IsOK() )
1365 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1366 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1367 if ( !smError || smError->IsOK() )
1368 smError = pm->_warning;
1371 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1373 switch ( components.size() )
1377 case 1: return components[0];
1379 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1381 return SMESH_ProxyMesh::Ptr();
1382 } // --------------------------------------------------------------------------------
1383 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1385 save << " " << _nbLayers
1386 << " " << _thickness
1387 << " " << _stretchFactor
1388 << " " << _shapeIds.size();
1389 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1390 save << " " << _shapeIds[i];
1391 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1392 save << " " << _method;
1393 save << " " << _groupName.size();
1394 if ( !_groupName.empty() )
1395 save << " " << _groupName;
1397 } // --------------------------------------------------------------------------------
1398 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1400 int nbFaces, faceID, shapeToTreat, method;
1401 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1402 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1403 _shapeIds.push_back( faceID );
1404 if ( load >> shapeToTreat ) {
1405 _isToIgnoreShapes = !shapeToTreat;
1406 if ( load >> method )
1407 _method = (ExtrusionMethod) method;
1409 if ( load >> nameSize && nameSize > 0 )
1411 _groupName.resize( nameSize );
1412 load.get( _groupName[0] ); // remove a white-space
1413 load.getline( &_groupName[0], nameSize + 1 );
1417 _isToIgnoreShapes = true; // old behavior
1420 } // --------------------------------------------------------------------------------
1421 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* /*theMesh*/,
1422 const TopoDS_Shape& /*theShape*/)
1426 } // --------------------------------------------------------------------------------
1427 SMESH_ComputeErrorPtr
1428 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1429 const TopoDS_Shape& theShape,
1430 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1432 VISCOUS_3D::_ViscousBuilder builder;
1433 SMESH_ComputeErrorPtr err = builder.CheckHypotheses( theMesh, theShape );
1434 if ( err && !err->IsOK() )
1435 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1437 theStatus = SMESH_Hypothesis::HYP_OK;
1441 // --------------------------------------------------------------------------------
1442 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1445 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1446 return IsToIgnoreShapes() ? !isIn : isIn;
1449 // --------------------------------------------------------------------------------
1450 SMDS_MeshGroup* StdMeshers_ViscousLayers::CreateGroup( const std::string& theName,
1451 SMESH_Mesh& theMesh,
1452 SMDSAbs_ElementType theType)
1454 SMESH_Group* group = 0;
1455 SMDS_MeshGroup* groupDS = 0;
1457 if ( theName.empty() )
1460 if ( SMESH_Mesh::GroupIteratorPtr grIt = theMesh.GetGroups() )
1461 while( grIt->more() && !group )
1463 group = grIt->next();
1465 group->GetGroupDS()->GetType() != theType ||
1466 group->GetName() != theName ||
1467 !dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() ))
1471 group = theMesh.AddGroup( theType, theName.c_str() );
1473 groupDS = & dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() )->SMDSGroup();
1478 // END StdMeshers_ViscousLayers hypothesis
1479 //================================================================================
1481 namespace VISCOUS_3D
1483 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV,
1484 const double h0, bool* isRegularEdge = nullptr )
1488 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1489 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1490 gp_Pnt p = BRep_Tool::Pnt( fromV );
1491 gp_Pnt pf = c->Value( f ), pl = c->Value( l );
1492 double distF = p.SquareDistance( pf );
1493 double distL = p.SquareDistance( pl );
1494 c->D1(( distF < distL ? f : l), p, dir );
1495 if ( distL < distF ) dir.Reverse();
1496 bool isDifficult = false;
1497 if ( dir.SquareMagnitude() < h0 * h0 ) // check dir orientation
1499 gp_Pnt& pClose = distF < distL ? pf : pl;
1500 gp_Pnt& pFar = distF < distL ? pl : pf;
1501 gp_Pnt pMid = 0.9 * pClose.XYZ() + 0.1 * pFar.XYZ();
1502 gp_Vec vMid( p, pMid );
1503 double dot = vMid * dir;
1504 double cos2 = dot * dot / dir.SquareMagnitude() / vMid.SquareMagnitude();
1505 if ( cos2 < 0.7 * 0.7 || dot < 0 ) // large angle between dir and vMid
1507 double uClose = distF < distL ? f : l;
1508 double uFar = distF < distL ? l : f;
1509 double r = h0 / SMESH_Algo::EdgeLength( E );
1510 double uMid = ( 1 - r ) * uClose + r * uFar;
1511 pMid = c->Value( uMid );
1512 dir = gp_Vec( p, pMid );
1516 if ( isRegularEdge )
1517 *isRegularEdge = !isDifficult;
1521 //--------------------------------------------------------------------------------
1522 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1523 SMESH_MesherHelper& helper)
1526 double f,l; gp_Pnt p;
1527 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1528 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1529 double u = helper.GetNodeU( E, atNode );
1533 //--------------------------------------------------------------------------------
1534 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1535 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok/*,
1537 //--------------------------------------------------------------------------------
1538 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1539 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1542 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1545 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1546 return getFaceDir( F, v, node, helper, ok );
1548 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1549 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1550 gp_Pnt p; gp_Vec du, dv, norm;
1551 surface->D1( uv.X(),uv.Y(), p, du,dv );
1554 double u = helper.GetNodeU( fromE, node, 0, &ok );
1556 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1557 if ( o == TopAbs_REVERSED )
1560 gp_Vec dir = norm ^ du;
1562 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1563 helper.IsClosedEdge( fromE ))
1565 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1566 else c->D1( f, p, dv );
1567 if ( o == TopAbs_REVERSED )
1569 gp_Vec dir2 = norm ^ dv;
1570 dir = dir.Normalized() + dir2.Normalized();
1574 //--------------------------------------------------------------------------------
1575 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1576 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1577 bool& ok/*, double* cosin*/)
1579 TopoDS_Face faceFrw = F;
1580 faceFrw.Orientation( TopAbs_FORWARD );
1581 //double f,l; TopLoc_Location loc;
1582 TopoDS_Edge edges[2]; // sharing a vertex
1585 TopoDS_Vertex VV[2];
1586 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1587 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1589 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1590 if ( SMESH_Algo::isDegenerated( e )) continue;
1591 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1592 if ( VV[1].IsSame( fromV )) {
1593 nbEdges += edges[ 0 ].IsNull();
1596 else if ( VV[0].IsSame( fromV )) {
1597 nbEdges += edges[ 1 ].IsNull();
1602 gp_XYZ dir(0,0,0), edgeDir[2];
1605 // get dirs of edges going fromV
1607 for ( size_t i = 0; i < nbEdges && ok; ++i )
1609 edgeDir[i] = getEdgeDir( edges[i], fromV, 0.1 * SMESH_Algo::EdgeLength( edges[i] ));
1610 double size2 = edgeDir[i].SquareModulus();
1611 if (( ok = size2 > numeric_limits<double>::min() ))
1612 edgeDir[i] /= sqrt( size2 );
1614 if ( !ok ) return dir;
1616 // get angle between the 2 edges
1618 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1619 if ( Abs( angle ) < 5 * M_PI/180 )
1621 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1625 dir = edgeDir[0] + edgeDir[1];
1630 // double angle = faceNormal.Angle( dir );
1631 // *cosin = Cos( angle );
1634 else if ( nbEdges == 1 )
1636 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1637 //if ( cosin ) *cosin = 1.;
1647 //================================================================================
1649 * \brief Finds concave VERTEXes of a FACE
1651 //================================================================================
1653 bool getConcaveVertices( const TopoDS_Face& F,
1654 SMESH_MesherHelper& helper,
1655 set< TGeomID >* vertices = 0)
1657 // check angles at VERTEXes
1659 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1660 for ( size_t iW = 0; iW < wires.size(); ++iW )
1662 const int nbEdges = wires[iW]->NbEdges();
1663 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1665 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1667 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1668 int iE2 = ( iE1 + 1 ) % nbEdges;
1669 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1670 iE2 = ( iE2 + 1 ) % nbEdges;
1671 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1672 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1673 wires[iW]->Edge( iE2 ), F, V );
1674 if ( angle < -5. * M_PI / 180. )
1678 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1682 return vertices ? !vertices->empty() : false;
1685 //================================================================================
1687 * \brief Returns true if a FACE is bound by a concave EDGE
1689 //================================================================================
1691 bool isConcave( const TopoDS_Face& F,
1692 SMESH_MesherHelper& helper,
1693 set< TGeomID >* vertices = 0 )
1695 bool isConcv = false;
1696 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1698 gp_Vec2d drv1, drv2;
1700 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1701 for ( ; eExp.More(); eExp.Next() )
1703 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1704 if ( SMESH_Algo::isDegenerated( E )) continue;
1705 // check if 2D curve is concave
1706 BRepAdaptor_Curve2d curve( E, F );
1707 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1708 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1709 curve.Intervals( intervals, GeomAbs_C2 );
1710 bool isConvex = true;
1711 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1713 double u1 = intervals( i );
1714 double u2 = intervals( i+1 );
1715 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1716 double cross = drv1 ^ drv2;
1717 if ( E.Orientation() == TopAbs_REVERSED )
1719 isConvex = ( cross > -1e-9 ); // 0.1 );
1723 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1732 // check angles at VERTEXes
1733 if ( getConcaveVertices( F, helper, vertices ))
1739 //================================================================================
1741 * \brief Computes minimal distance of face in-FACE nodes from an EDGE
1742 * \param [in] face - the mesh face to treat
1743 * \param [in] nodeOnEdge - a node on the EDGE
1744 * \param [out] faceSize - the computed distance
1745 * \return bool - true if faceSize computed
1747 //================================================================================
1749 bool getDistFromEdge( const SMDS_MeshElement* face,
1750 const SMDS_MeshNode* nodeOnEdge,
1753 faceSize = Precision::Infinite();
1756 int nbN = face->NbCornerNodes();
1757 int iOnE = face->GetNodeIndex( nodeOnEdge );
1758 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1759 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1760 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1761 face->GetNode( iNext[1] ) };
1762 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1763 double segLen = -1.;
1764 // look for two neighbor not in-FACE nodes of face
1765 for ( int i = 0; i < 2; ++i )
1767 if (( nNext[i]->GetPosition()->GetDim() != 2 ) &&
1768 ( nodeOnEdge->GetPosition()->GetDim() == 0 || nNext[i]->GetID() < nodeOnEdge->GetID() ))
1770 // look for an in-FACE node
1771 for ( int iN = 0; iN < nbN; ++iN )
1773 if ( iN == iOnE || iN == iNext[i] )
1775 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1776 gp_XYZ v = pInFace - segEnd;
1779 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1780 segLen = segVec.Modulus();
1782 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1783 faceSize = Min( faceSize, distToSeg );
1791 //================================================================================
1793 * \brief Return direction of axis or revolution of a surface
1795 //================================================================================
1797 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1800 switch ( surface.GetType() ) {
1803 gp_Cone cone = surface.Cone();
1804 axis = cone.Axis().Direction();
1807 case GeomAbs_Sphere:
1809 gp_Sphere sphere = surface.Sphere();
1810 axis = sphere.Position().Direction();
1813 case GeomAbs_SurfaceOfRevolution:
1815 axis = surface.AxeOfRevolution().Direction();
1818 //case GeomAbs_SurfaceOfExtrusion:
1819 case GeomAbs_OffsetSurface:
1821 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1822 return getRovolutionAxis( base->Surface(), axis );
1824 default: return false;
1829 //--------------------------------------------------------------------------------
1830 // DEBUG. Dump intermediate node positions into a python script
1831 // HOWTO use: run python commands written in a console and defined in /tmp/viscous.py
1832 // to see construction steps of viscous layers
1838 PyDump(SMESH_Mesh& m) {
1839 int tag = 3 + m.GetId();
1840 const char* fname = "/tmp/viscous.py";
1841 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
1842 py = _pyStream = new ofstream(fname);
1843 *py << "import SMESH" << endl
1844 << "from salome.smesh import smeshBuilder" << endl
1845 << "smesh = smeshBuilder.New()" << endl
1846 << "meshSO = salome.myStudy.FindObjectID('0:1:2:" << tag <<"')" << endl
1847 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1852 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1853 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1854 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1855 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1859 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1860 struct MyStream : public ostream
1862 template <class T> ostream & operator<<( const T &anything ) { return *this ; }
1864 void Pause() { py = &_mystream; }
1865 void Resume() { py = _pyStream; }
1869 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1870 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1871 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1872 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1873 void _dumpFunction(const string& fun, int ln)
1874 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1875 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1876 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1877 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1878 void _dumpCmd(const string& txt, int ln)
1879 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1880 void dumpFunctionEnd()
1881 { if (py) *py<< " return"<< endl; }
1882 void dumpChangeNodes( const SMDS_MeshElement* f )
1883 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1884 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1885 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1886 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1890 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} void Pause() {} void Resume() {} };
1891 #define dumpFunction(f) f
1893 #define dumpMoveComm(n,txt)
1894 #define dumpCmd(txt)
1895 #define dumpFunctionEnd()
1896 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1897 #define debugMsg( txt ) {}
1902 using namespace VISCOUS_3D;
1904 //================================================================================
1906 * \brief Constructor of _ViscousBuilder
1908 //================================================================================
1910 _ViscousBuilder::_ViscousBuilder()
1912 _error = SMESH_ComputeError::New(COMPERR_OK);
1916 //================================================================================
1918 * \brief Stores error description and returns false
1920 //================================================================================
1922 bool _ViscousBuilder::error(const string& text, int solidId )
1924 const string prefix = string("Viscous layers builder: ");
1925 _error->myName = COMPERR_ALGO_FAILED;
1926 _error->myComment = prefix + text;
1929 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1930 if ( !sm && !_sdVec.empty() )
1931 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1932 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1934 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1935 if ( smError && smError->myAlgo )
1936 _error->myAlgo = smError->myAlgo;
1938 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1940 // set KO to all solids
1941 for ( size_t i = 0; i < _sdVec.size(); ++i )
1943 if ( _sdVec[i]._index == solidId )
1945 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1946 if ( !sm->IsEmpty() )
1948 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1949 if ( !smError || smError->IsOK() )
1951 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1952 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1956 makeGroupOfLE(); // debug
1961 //================================================================================
1963 * \brief At study restoration, restore event listeners used to clear an inferior
1964 * dim sub-mesh modified by viscous layers
1966 //================================================================================
1968 void _ViscousBuilder::RestoreListeners()
1973 //================================================================================
1975 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1977 //================================================================================
1979 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1981 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1982 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1983 for ( ; fExp.More(); fExp.Next() )
1985 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1986 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
1988 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
1990 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
1993 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
1994 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
1996 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
1997 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
1998 while( prxIt->more() )
2000 const SMDS_MeshElement* fSrc = srcIt->next();
2001 const SMDS_MeshElement* fPrx = prxIt->next();
2002 if ( fSrc->NbNodes() != fPrx->NbNodes())
2003 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
2004 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
2005 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
2008 pm->_n2nMapComputed = true;
2012 //================================================================================
2014 * \brief Does its job
2016 //================================================================================
2018 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
2019 const TopoDS_Shape& theShape)
2025 // check if proxy mesh already computed
2026 TopExp_Explorer exp( theShape, TopAbs_SOLID );
2028 return error("No SOLID's in theShape"), _error;
2030 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
2031 return SMESH_ComputeErrorPtr(); // everything already computed
2033 // TODO: ignore already computed SOLIDs
2034 if ( !findSolidsWithLayers())
2037 if ( !findFacesWithLayers() )
2040 if ( !makeEdgesOnShape() )
2043 findPeriodicFaces();
2045 PyDump debugDump( theMesh );
2046 _pyDump = &debugDump;
2049 for ( size_t i = 0; i < _sdVec.size(); ++i )
2052 for ( iSD = 0; iSD < _sdVec.size(); ++iSD ) // find next SOLID to compute
2053 if ( _sdVec[iSD]._before.IsEmpty() &&
2054 !_sdVec[iSD]._solid.IsNull() &&
2055 !_sdVec[iSD]._done )
2057 if ( iSD == _sdVec.size() )
2060 if ( ! makeLayer(_sdVec[iSD]) ) // create _LayerEdge's
2063 if ( _sdVec[iSD]._n2eMap.size() == 0 ) // no layers in a SOLID
2065 _sdVec[iSD]._solid.Nullify();
2069 if ( ! inflate(_sdVec[iSD]) ) // increase length of _LayerEdge's
2072 if ( ! refine(_sdVec[iSD]) ) // create nodes and prisms
2075 if ( ! shrink(_sdVec[iSD]) ) // shrink 2D mesh on FACEs w/o layer
2078 addBoundaryElements(_sdVec[iSD]); // create quadrangles on prism bare sides
2080 _sdVec[iSD]._done = true;
2082 const TopoDS_Shape& solid = _sdVec[iSD]._solid;
2083 for ( iSD = 0; iSD < _sdVec.size(); ++iSD )
2084 _sdVec[iSD]._before.Remove( solid );
2087 makeGroupOfLE(); // debug
2093 //================================================================================
2095 * \brief Check validity of hypotheses
2097 //================================================================================
2099 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
2100 const TopoDS_Shape& shape )
2104 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
2105 return SMESH_ComputeErrorPtr(); // everything already computed
2108 findSolidsWithLayers( /*checkFaceMesh=*/false );
2109 bool ok = findFacesWithLayers( true );
2111 // remove _MeshOfSolid's of _SolidData's
2112 for ( size_t i = 0; i < _sdVec.size(); ++i )
2113 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
2118 return SMESH_ComputeErrorPtr();
2121 //================================================================================
2123 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
2125 //================================================================================
2127 bool _ViscousBuilder::findSolidsWithLayers(const bool checkFaceMesh)
2130 TopTools_IndexedMapOfShape allSolids;
2131 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
2132 _sdVec.reserve( allSolids.Extent());
2134 SMESH_HypoFilter filter;
2135 for ( int i = 1; i <= allSolids.Extent(); ++i )
2137 SMESH_subMesh* sm = _mesh->GetSubMesh( allSolids(i) );
2138 if ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbElements() > 0 )
2139 continue; // solid is already meshed
2140 // TODO: check if algo is hidden
2141 SMESH_Algo* algo = sm->GetAlgo();
2142 if ( !algo ) continue;
2143 // check if all FACEs are meshed, which can be false if Compute() a sub-shape
2144 if ( checkFaceMesh )
2146 bool facesMeshed = true;
2147 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,true);
2148 while ( smIt->more() && facesMeshed )
2150 SMESH_subMesh * faceSM = smIt->next();
2151 if ( faceSM->GetSubShape().ShapeType() != TopAbs_FACE )
2153 facesMeshed = faceSM->IsMeshComputed();
2158 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
2159 const list <const SMESHDS_Hypothesis *> & allHyps =
2160 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
2161 _SolidData* soData = 0;
2162 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
2163 const StdMeshers_ViscousLayers* viscHyp = 0;
2164 for ( ; hyp != allHyps.end(); ++hyp )
2165 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
2167 TopoDS_Shape hypShape;
2168 filter.Init( filter.Is( viscHyp ));
2169 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
2173 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
2176 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
2177 soData = & _sdVec.back();
2178 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
2179 soData->_helper = new SMESH_MesherHelper( *_mesh );
2180 soData->_helper->SetSubShape( allSolids(i) );
2181 _solids.Add( allSolids(i) );
2183 soData->_hyps.push_back( viscHyp );
2184 soData->_hypShapes.push_back( hypShape );
2187 if ( _sdVec.empty() )
2189 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
2194 //================================================================================
2196 * \brief Set a _SolidData to be computed before another
2198 //================================================================================
2200 bool _ViscousBuilder::setBefore( _SolidData& solidBefore, _SolidData& solidAfter )
2202 // check possibility to set this order; get all solids before solidBefore
2203 TopTools_IndexedMapOfShape allSolidsBefore;
2204 allSolidsBefore.Add( solidBefore._solid );
2205 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2207 int iSD = _solids.FindIndex( allSolidsBefore(i) );
2210 TopTools_MapIteratorOfMapOfShape soIt( _sdVec[ iSD-1 ]._before );
2211 for ( ; soIt.More(); soIt.Next() )
2212 allSolidsBefore.Add( soIt.Value() );
2215 if ( allSolidsBefore.Contains( solidAfter._solid ))
2218 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2219 solidAfter._before.Add( allSolidsBefore(i) );
2224 //================================================================================
2228 //================================================================================
2230 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
2232 SMESH_MesherHelper helper( *_mesh );
2233 TopExp_Explorer exp;
2235 // collect all faces-to-ignore defined by hyp
2236 for ( size_t i = 0; i < _sdVec.size(); ++i )
2238 // get faces-to-ignore defined by each hyp
2239 typedef const StdMeshers_ViscousLayers* THyp;
2240 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
2241 list< TFacesOfHyp > ignoreFacesOfHyps;
2242 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
2243 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
2244 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
2246 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
2247 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
2250 // fill _SolidData::_face2hyp and check compatibility of hypotheses
2251 const int nbHyps = _sdVec[i]._hyps.size();
2254 // check if two hypotheses define different parameters for the same FACE
2255 list< TFacesOfHyp >::iterator igFacesOfHyp;
2256 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2258 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
2260 igFacesOfHyp = ignoreFacesOfHyps.begin();
2261 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2262 if ( ! igFacesOfHyp->first.count( faceID ))
2265 return error(SMESH_Comment("Several hypotheses define "
2266 "Viscous Layers on the face #") << faceID );
2267 hyp = igFacesOfHyp->second;
2270 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2272 _sdVec[i]._ignoreFaceIds.insert( faceID );
2275 // check if two hypotheses define different number of viscous layers for
2276 // adjacent faces of a solid
2277 set< int > nbLayersSet;
2278 igFacesOfHyp = ignoreFacesOfHyps.begin();
2279 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2281 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2283 if ( nbLayersSet.size() > 1 )
2285 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2287 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2288 THyp hyp1 = 0, hyp2 = 0;
2289 while( const TopoDS_Shape* face = fIt->next() )
2291 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2292 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2293 if ( f2h != _sdVec[i]._face2hyp.end() )
2295 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2298 if ( hyp1 && hyp2 &&
2299 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2301 return error("Two hypotheses define different number of "
2302 "viscous layers on adjacent faces");
2306 } // if ( nbHyps > 1 )
2309 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2313 if ( onlyWith ) // is called to check hypotheses compatibility only
2316 // fill _SolidData::_reversedFaceIds
2317 for ( size_t i = 0; i < _sdVec.size(); ++i )
2319 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2320 for ( ; exp.More(); exp.Next() )
2322 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2323 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2324 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2325 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2326 helper.IsReversedSubMesh( face ))
2328 _sdVec[i]._reversedFaceIds.insert( faceID );
2333 // Find FACEs to shrink mesh on (solution 2 in issue 0020832): fill in _shrinkShape2Shape
2334 TopTools_IndexedMapOfShape shapes;
2335 std::string structAlgoName = "Hexa_3D";
2336 for ( size_t i = 0; i < _sdVec.size(); ++i )
2339 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2340 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2342 const TopoDS_Shape& edge = shapes(iE);
2343 // find 2 FACEs sharing an EDGE
2345 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE, &_sdVec[i]._solid);
2346 while ( fIt->more())
2348 const TopoDS_Shape* f = fIt->next();
2349 FF[ int( !FF[0].IsNull()) ] = *f;
2351 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2353 // check presence of layers on them
2355 for ( int j = 0; j < 2; ++j )
2356 ignore[j] = _sdVec[i]._ignoreFaceIds.count( getMeshDS()->ShapeToIndex( FF[j] ));
2357 if ( ignore[0] == ignore[1] )
2358 continue; // nothing interesting
2359 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ]; // FACE w/o layers
2362 if ( !fWOL.IsNull())
2364 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2365 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2370 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2372 for ( size_t i = 0; i < _sdVec.size(); ++i )
2375 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2376 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2378 const TopoDS_Shape& vertex = shapes(iV);
2379 // find faces WOL sharing the vertex
2380 vector< TopoDS_Shape > facesWOL;
2381 size_t totalNbFaces = 0;
2382 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE, &_sdVec[i]._solid );
2383 while ( fIt->more())
2385 const TopoDS_Shape* f = fIt->next();
2387 const int fID = getMeshDS()->ShapeToIndex( *f );
2388 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&& !_sdVec[i]._noShrinkShapes.count( fID )*/)
2389 facesWOL.push_back( *f );
2391 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2392 continue; // no layers at this vertex or no WOL
2393 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2394 switch ( facesWOL.size() )
2398 helper.SetSubShape( facesWOL[0] );
2399 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2401 TopoDS_Shape seamEdge;
2402 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2403 while ( eIt->more() && seamEdge.IsNull() )
2405 const TopoDS_Shape* e = eIt->next();
2406 if ( helper.IsRealSeam( *e ) )
2409 if ( !seamEdge.IsNull() )
2411 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2415 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2420 // find an edge shared by 2 faces
2421 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2422 while ( eIt->more())
2424 const TopoDS_Shape* e = eIt->next();
2425 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2426 helper.IsSubShape( *e, facesWOL[1]))
2428 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2434 return error("Not yet supported case", _sdVec[i]._index);
2439 // Add to _noShrinkShapes sub-shapes of FACE's that can't be shrunk since
2440 // the algo of the SOLID sharing the FACE does not support it or for other reasons
2441 set< string > notSupportAlgos; notSupportAlgos.insert( structAlgoName );
2442 for ( size_t i = 0; i < _sdVec.size(); ++i )
2444 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2445 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2447 const TopoDS_Shape& fWOL = e2f->second;
2448 const TGeomID edgeID = e2f->first;
2449 TGeomID faceID = getMeshDS()->ShapeToIndex( fWOL );
2450 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2451 if ( edge.ShapeType() != TopAbs_EDGE )
2452 continue; // shrink shape is VERTEX
2455 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2456 while ( soIt->more() && solid.IsNull() )
2458 const TopoDS_Shape* so = soIt->next();
2459 if ( !so->IsSame( _sdVec[i]._solid ))
2462 if ( solid.IsNull() )
2465 bool noShrinkE = false;
2466 SMESH_Algo* algo = _mesh->GetSubMesh( solid )->GetAlgo();
2467 bool isStructured = ( algo && algo->GetName() == structAlgoName );
2468 size_t iSolid = _solids.FindIndex( solid ) - 1;
2469 if ( iSolid < _sdVec.size() && _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2471 // the adjacent SOLID has NO layers on fWOL;
2472 // shrink allowed if
2473 // - there are layers on the EDGE in the adjacent SOLID
2474 // - there are NO layers in the adjacent SOLID && algo is unstructured and computed later
2475 bool hasWLAdj = (_sdVec[iSolid]._shrinkShape2Shape.count( edgeID ));
2476 bool shrinkAllowed = (( hasWLAdj ) ||
2477 ( !isStructured && setBefore( _sdVec[ i ], _sdVec[ iSolid ] )));
2478 noShrinkE = !shrinkAllowed;
2480 else if ( iSolid < _sdVec.size() )
2482 // the adjacent SOLID has layers on fWOL;
2483 // check if SOLID's mesh is unstructured and then try to set it
2484 // to be computed after the i-th solid
2485 if ( isStructured || !setBefore( _sdVec[ i ], _sdVec[ iSolid ] ))
2486 noShrinkE = true; // don't shrink fWOL
2490 // the adjacent SOLID has NO layers at all
2491 noShrinkE = isStructured;
2496 _sdVec[i]._noShrinkShapes.insert( edgeID );
2498 // check if there is a collision with to-shrink-from EDGEs in iSolid
2499 // if ( iSolid < _sdVec.size() )
2502 // TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2503 // for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2505 // const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2506 // const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2507 // if ( eID == edgeID ||
2508 // !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2509 // _sdVec[i]._noShrinkShapes.count( eID ))
2511 // for ( int is1st = 0; is1st < 2; ++is1st )
2513 // TopoDS_Vertex V = helper.IthVertex( is1st, E );
2514 // if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2516 // return error("No way to make a conformal mesh with "
2517 // "the given set of faces with layers", _sdVec[i]._index);
2524 // add VERTEXes of the edge in _noShrinkShapes, which is necessary if
2525 // _shrinkShape2Shape is different in the adjacent SOLID
2526 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2528 TGeomID vID = getMeshDS()->ShapeToIndex( vIt.Value() );
2529 bool noShrinkV = false, noShrinkIfAdjMeshed = false;
2531 if ( iSolid < _sdVec.size() )
2533 if ( _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2535 map< TGeomID, TopoDS_Shape >::iterator i2S, i2SAdj;
2536 i2S = _sdVec[i ]._shrinkShape2Shape.find( vID );
2537 i2SAdj = _sdVec[iSolid]._shrinkShape2Shape.find( vID );
2538 if ( i2SAdj == _sdVec[iSolid]._shrinkShape2Shape.end() )
2539 noShrinkV = (( isStructured ) ||
2540 ( noShrinkIfAdjMeshed = i2S->second.ShapeType() == TopAbs_EDGE ));
2542 noShrinkV = ( ! i2S->second.IsSame( i2SAdj->second ));
2546 noShrinkV = noShrinkE;
2551 // the adjacent SOLID has NO layers at all
2558 noShrinkV = noShrinkIfAdjMeshed =
2559 ( _sdVec[i]._shrinkShape2Shape[ vID ].ShapeType() == TopAbs_EDGE );
2563 if ( noShrinkV && noShrinkIfAdjMeshed )
2565 // noShrinkV if FACEs in the adjacent SOLID are meshed
2566 PShapeIteratorPtr fIt = helper.GetAncestors( _sdVec[i]._shrinkShape2Shape[ vID ],
2567 *_mesh, TopAbs_FACE, &solid );
2568 while ( fIt->more() )
2570 const TopoDS_Shape* f = fIt->next();
2571 if ( !f->IsSame( fWOL ))
2573 noShrinkV = ! _mesh->GetSubMesh( *f )->IsEmpty();
2579 _sdVec[i]._noShrinkShapes.insert( vID );
2582 } // loop on _sdVec[i]._shrinkShape2Shape
2583 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2586 // add FACEs of other SOLIDs to _ignoreFaceIds
2587 for ( size_t i = 0; i < _sdVec.size(); ++i )
2590 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2592 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2594 if ( !shapes.Contains( exp.Current() ))
2595 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2602 //================================================================================
2604 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2606 //================================================================================
2608 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2609 const StdMeshers_ViscousLayers* hyp,
2610 const TopoDS_Shape& hypShape,
2611 set<TGeomID>& ignoreFaceIds)
2613 TopExp_Explorer exp;
2615 vector<TGeomID> ids = hyp->GetBndShapes();
2616 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2618 for ( size_t ii = 0; ii < ids.size(); ++ii )
2620 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2621 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2622 ignoreFaceIds.insert( ids[ii] );
2625 else // FACEs with layers are given
2627 exp.Init( solid, TopAbs_FACE );
2628 for ( ; exp.More(); exp.Next() )
2630 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2631 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2632 ignoreFaceIds.insert( faceInd );
2636 // ignore internal FACEs if inlets and outlets are specified
2637 if ( hyp->IsToIgnoreShapes() )
2639 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2640 TopExp::MapShapesAndAncestors( hypShape,
2641 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2643 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2645 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2646 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2649 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2651 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2656 //================================================================================
2658 * \brief Create the inner surface of the viscous layer and prepare data for infation
2660 //================================================================================
2662 bool _ViscousBuilder::makeLayer(_SolidData& data)
2664 // make a map to find new nodes on sub-shapes shared with other SOLID
2665 map< TGeomID, TNode2Edge* >::iterator s2ne;
2666 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2667 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2669 TGeomID shapeInd = s2s->first;
2670 for ( size_t i = 0; i < _sdVec.size(); ++i )
2672 if ( _sdVec[i]._index == data._index ) continue;
2673 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2674 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2675 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2677 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2683 // Create temporary faces and _LayerEdge's
2685 debugMsg( "######################" );
2686 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2688 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2690 data._stepSize = Precision::Infinite();
2691 data._stepSizeNodes[0] = 0;
2693 SMESH_MesherHelper helper( *_mesh );
2694 helper.SetSubShape( data._solid );
2695 helper.SetElementsOnShape( true );
2697 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2698 TNode2Edge::iterator n2e2;
2700 // make _LayerEdge's
2701 for ( TopExp_Explorer exp( data._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2703 const TopoDS_Face& F = TopoDS::Face( exp.Current() );
2704 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2705 const TGeomID id = sm->GetId();
2706 if ( edgesByGeom[ id ]._shape.IsNull() )
2707 continue; // no layers
2708 SMESH_ProxyMesh::SubMesh* proxySub =
2709 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2711 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2712 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << id, data._index );
2714 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2715 while ( eIt->more() )
2717 const SMDS_MeshElement* face = eIt->next();
2718 double faceMaxCosin = -1;
2719 _LayerEdge* maxCosinEdge = 0;
2720 int nbDegenNodes = 0;
2722 newNodes.resize( face->NbCornerNodes() );
2723 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2725 const SMDS_MeshNode* n = face->GetNode( i );
2726 const int shapeID = n->getshapeId();
2727 const bool onDegenShap = helper.IsDegenShape( shapeID );
2728 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2733 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2734 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2735 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2736 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2746 TNode2Edge::iterator n2e = data._n2eMap.insert({ n, nullptr }).first;
2747 if ( !(*n2e).second )
2750 _LayerEdge* edge = _Factory::NewLayerEdge();
2751 edge->_nodes.push_back( n );
2753 edgesByGeom[ shapeID ]._edges.push_back( edge );
2754 const bool noShrink = data._noShrinkShapes.count( shapeID );
2756 SMESH_TNodeXYZ xyz( n );
2758 // set edge data or find already refined _LayerEdge and get data from it
2759 if (( !noShrink ) &&
2760 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2761 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2762 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2764 _LayerEdge* foundEdge = (*n2e2).second;
2765 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2766 foundEdge->_pos.push_back( lastPos );
2767 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2768 const_cast< SMDS_MeshNode* >
2769 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2775 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2777 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2780 if ( edge->_nodes.size() < 2 && !noShrink )
2781 edge->Block( data ); // a sole node is moved only if noShrink
2783 dumpMove(edge->_nodes.back());
2785 if ( edge->_cosin > faceMaxCosin && edge->_nodes.size() > 1 )
2787 faceMaxCosin = edge->_cosin;
2788 maxCosinEdge = edge;
2791 newNodes[ i ] = n2e->second->_nodes.back();
2794 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2796 if ( newNodes.size() - nbDegenNodes < 2 )
2799 // create a temporary face
2800 const SMDS_MeshElement* newFace =
2801 new _TmpMeshFace( newNodes, --_tmpFaceID, face->GetShapeID(), face );
2802 proxySub->AddElement( newFace );
2804 // compute inflation step size by min size of element on a convex surface
2805 if ( faceMaxCosin > theMinSmoothCosin )
2806 limitStepSize( data, face, maxCosinEdge );
2808 } // loop on 2D elements on a FACE
2809 } // loop on FACEs of a SOLID to create _LayerEdge's
2812 // Set _LayerEdge::_neibors
2813 TNode2Edge::iterator n2e;
2814 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2816 _EdgesOnShape& eos = data._edgesOnShape[iS];
2817 for ( size_t i = 0; i < eos._edges.size(); ++i )
2819 _LayerEdge* edge = eos._edges[i];
2820 TIDSortedNodeSet nearNodes;
2821 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2822 while ( fIt->more() )
2824 const SMDS_MeshElement* f = fIt->next();
2825 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2826 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2828 nearNodes.erase( edge->_nodes[0] );
2829 edge->_neibors.reserve( nearNodes.size() );
2830 TIDSortedNodeSet::iterator node = nearNodes.begin();
2831 for ( ; node != nearNodes.end(); ++node )
2832 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2833 edge->_neibors.push_back( n2e->second );
2836 // Fix uv of nodes on periodic FACEs (bos #20643)
2838 if ( eos.ShapeType() != TopAbs_EDGE ||
2839 eos.SWOLType() != TopAbs_FACE ||
2843 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
2844 SMESH_MesherHelper faceHelper( *_mesh );
2845 faceHelper.SetSubShape( F );
2846 faceHelper.ToFixNodeParameters( true );
2847 if ( faceHelper.GetPeriodicIndex() == 0 )
2850 SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( F );
2851 if ( !smDS || smDS->GetNodes() == 0 )
2854 bool toCheck = true;
2855 const double tol = 2 * helper.MaxTolerance( F );
2856 for ( SMDS_NodeIteratorPtr nIt = smDS->GetNodes(); nIt->more(); )
2858 const SMDS_MeshNode* node = nIt->next();
2859 gp_XY uvNew( Precision::Infinite(), 0 );
2863 gp_XY uv = faceHelper.GetNodeUV( F, node );
2864 if ( ! faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true ))
2865 break; // projection on F failed
2866 if (( uv - uvNew ).Modulus() < Precision::Confusion() )
2867 break; // current uv is OK
2869 faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true );
2873 data._epsilon = 1e-7;
2874 if ( data._stepSize < 1. )
2875 data._epsilon *= data._stepSize;
2877 if ( !findShapesToSmooth( data )) // _LayerEdge::_maxLen is computed here
2880 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2881 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2883 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2884 const SMDS_MeshNode* nn[2];
2885 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2887 _EdgesOnShape& eos = data._edgesOnShape[iS];
2888 for ( size_t i = 0; i < eos._edges.size(); ++i )
2890 _LayerEdge* edge = eos._edges[i];
2891 if ( edge->IsOnEdge() )
2893 // get neighbor nodes
2894 bool hasData = ( edge->_2neibors->_edges[0] );
2895 if ( hasData ) // _LayerEdge is a copy of another one
2897 nn[0] = edge->_2neibors->srcNode(0);
2898 nn[1] = edge->_2neibors->srcNode(1);
2900 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2904 // set neighbor _LayerEdge's
2905 for ( int j = 0; j < 2; ++j )
2907 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2908 return error("_LayerEdge not found by src node", data._index);
2909 edge->_2neibors->_edges[j] = n2e->second;
2912 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2915 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2917 _Simplex& s = edge->_simplices[j];
2918 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2919 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2922 // For an _LayerEdge on a degenerated EDGE, copy some data from
2923 // a corresponding _LayerEdge on a VERTEX
2924 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2925 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2927 // Generally we should not get here
2928 if ( eos.ShapeType() != TopAbs_EDGE )
2930 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2931 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2932 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2934 const _LayerEdge* vEdge = n2e->second;
2935 edge->_normal = vEdge->_normal;
2936 edge->_lenFactor = vEdge->_lenFactor;
2937 edge->_cosin = vEdge->_cosin;
2940 } // loop on data._edgesOnShape._edges
2941 } // loop on data._edgesOnShape
2943 // fix _LayerEdge::_2neibors on EDGEs to smooth
2944 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2945 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2946 // if ( !e2c->second.IsNull() )
2948 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2949 // data.Sort2NeiborsOnEdge( eos->_edges );
2956 //================================================================================
2958 * \brief Compute inflation step size by min size of element on a convex surface
2960 //================================================================================
2962 void _ViscousBuilder::limitStepSize( _SolidData& data,
2963 const SMDS_MeshElement* face,
2964 const _LayerEdge* maxCosinEdge )
2967 double minSize = 10 * data._stepSize;
2968 const int nbNodes = face->NbCornerNodes();
2969 for ( int i = 0; i < nbNodes; ++i )
2971 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2972 const SMDS_MeshNode* curN = face->GetNode( i );
2973 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2974 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2976 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2977 if ( dist < minSize )
2978 minSize = dist, iN = i;
2981 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
2982 if ( newStep < data._stepSize )
2984 data._stepSize = newStep;
2985 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
2986 data._stepSizeNodes[0] = face->GetNode( iN );
2987 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
2991 //================================================================================
2993 * \brief Compute inflation step size by min size of element on a convex surface
2995 //================================================================================
2997 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
2999 if ( minSize < data._stepSize )
3001 data._stepSize = minSize;
3002 if ( data._stepSizeNodes[0] )
3005 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
3006 data._stepSizeCoeff = data._stepSize / dist;
3011 //================================================================================
3013 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
3015 //================================================================================
3017 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
3019 SMESH_MesherHelper helper( *_mesh );
3021 BRepLProp_SLProps surfProp( 2, 1e-6 );
3022 data._convexFaces.clear();
3024 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
3026 _EdgesOnShape& eof = data._edgesOnShape[iS];
3027 if ( eof.ShapeType() != TopAbs_FACE ||
3028 data._ignoreFaceIds.count( eof._shapeID ))
3031 TopoDS_Face F = TopoDS::Face( eof._shape );
3032 const TGeomID faceID = eof._shapeID;
3034 BRepAdaptor_Surface surface( F, false );
3035 surfProp.SetSurface( surface );
3037 _ConvexFace cnvFace;
3039 cnvFace._normalsFixed = false;
3040 cnvFace._isTooCurved = false;
3042 double maxCurvature = cnvFace.GetMaxCurvature( data, eof, surfProp, helper );
3043 if ( maxCurvature > 0 )
3045 limitStepSize( data, 0.9 / maxCurvature );
3046 findEdgesToUpdateNormalNearConvexFace( cnvFace, data, helper );
3048 if ( !cnvFace._isTooCurved ) continue;
3050 _ConvexFace & convFace =
3051 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
3053 // skip a closed surface (data._convexFaces is useful anyway)
3054 bool isClosedF = false;
3055 helper.SetSubShape( F );
3056 if ( helper.HasRealSeam() )
3058 // in the closed surface there must be a closed EDGE
3059 for ( TopExp_Explorer eIt( F, TopAbs_EDGE ); eIt.More() && !isClosedF; eIt.Next() )
3060 isClosedF = helper.IsClosedEdge( TopoDS::Edge( eIt.Current() ));
3064 // limit _LayerEdge::_maxLen on the FACE
3065 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
3066 const double minCurvature =
3067 1. / ( eof._hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
3068 map< TGeomID, _EdgesOnShape* >::iterator id2eos = cnvFace._subIdToEOS.find( faceID );
3069 if ( id2eos != cnvFace._subIdToEOS.end() )
3071 _EdgesOnShape& eos = * id2eos->second;
3072 for ( size_t i = 0; i < eos._edges.size(); ++i )
3074 _LayerEdge* ledge = eos._edges[ i ];
3075 gp_XY uv = helper.GetNodeUV( F, ledge->_nodes[0] );
3076 surfProp.SetParameters( uv.X(), uv.Y() );
3077 if ( surfProp.IsCurvatureDefined() )
3079 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
3080 surfProp.MinCurvature() * oriFactor );
3081 if ( curvature > minCurvature )
3082 ledge->SetMaxLen( Min( ledge->_maxLen, 1. / curvature ));
3089 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
3090 // prism distortion.
3091 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
3092 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
3094 // there are _LayerEdge's on the FACE it-self;
3095 // select _LayerEdge's near EDGEs
3096 _EdgesOnShape& eos = * id2eos->second;
3097 for ( size_t i = 0; i < eos._edges.size(); ++i )
3099 _LayerEdge* ledge = eos._edges[ i ];
3100 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
3101 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
3103 // do not select _LayerEdge's neighboring sharp EDGEs
3104 bool sharpNbr = false;
3105 for ( size_t iN = 0; iN < ledge->_neibors.size() && !sharpNbr; ++iN )
3106 sharpNbr = ( ledge->_neibors[iN]->_cosin > theMinSmoothCosin );
3108 convFace._simplexTestEdges.push_back( ledge );
3115 // where there are no _LayerEdge's on a _ConvexFace,
3116 // as e.g. on a fillet surface with no internal nodes - issue 22580,
3117 // so that collision of viscous internal faces is not detected by check of
3118 // intersection of _LayerEdge's with the viscous internal faces.
3120 set< const SMDS_MeshNode* > usedNodes;
3122 // look for _LayerEdge's with null _sWOL
3123 id2eos = convFace._subIdToEOS.begin();
3124 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
3126 _EdgesOnShape& eos = * id2eos->second;
3127 if ( !eos._sWOL.IsNull() )
3129 for ( size_t i = 0; i < eos._edges.size(); ++i )
3131 _LayerEdge* ledge = eos._edges[ i ];
3132 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
3133 if ( !usedNodes.insert( srcNode ).second ) continue;
3135 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
3137 usedNodes.insert( ledge->_simplices[i]._nPrev );
3138 usedNodes.insert( ledge->_simplices[i]._nNext );
3140 convFace._simplexTestEdges.push_back( ledge );
3144 } // loop on FACEs of data._solid
3147 //================================================================================
3149 * \brief Detect shapes (and _LayerEdge's on them) to smooth
3151 //================================================================================
3153 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
3155 // define allowed thickness
3156 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
3159 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
3160 // boundary inclined to the shape at a sharp angle
3162 TopTools_MapOfShape edgesOfSmooFaces;
3163 SMESH_MesherHelper helper( *_mesh );
3166 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3167 data._nbShapesToSmooth = 0;
3169 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3171 _EdgesOnShape& eos = edgesByGeom[iS];
3172 eos._toSmooth = false;
3173 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
3176 double tgtThick = eos._hyp.GetTotalThickness();
3177 SMESH_subMeshIteratorPtr subIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false );
3178 while ( subIt->more() && !eos._toSmooth )
3180 TGeomID iSub = subIt->next()->GetId();
3181 const vector<_LayerEdge*>& eSub = edgesByGeom[ iSub ]._edges;
3182 if ( eSub.empty() ) continue;
3185 for ( size_t i = 0; i < eSub.size() && !eos._toSmooth; ++i )
3186 if ( eSub[i]->_cosin > theMinSmoothCosin )
3188 SMDS_ElemIteratorPtr fIt = eSub[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
3189 while ( fIt->more() && !eos._toSmooth )
3191 const SMDS_MeshElement* face = fIt->next();
3192 if ( face->getshapeId() == eos._shapeID &&
3193 getDistFromEdge( face, eSub[i]->_nodes[0], faceSize ))
3195 eos._toSmooth = needSmoothing( eSub[i]->_cosin,
3196 tgtThick * eSub[i]->_lenFactor,
3202 if ( eos._toSmooth )
3204 for ( TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
3205 edgesOfSmooFaces.Add( eExp.Current() );
3207 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
3209 data._nbShapesToSmooth += eos._toSmooth;
3213 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
3215 _EdgesOnShape& eos = edgesByGeom[iS];
3216 eos._edgeSmoother = NULL;
3217 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
3218 if ( !eos._hyp.ToSmooth() ) continue;
3220 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
3221 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
3224 double tgtThick = eos._hyp.GetTotalThickness(), h0 = eos._hyp.Get1stLayerThickness();
3225 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
3227 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
3228 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
3229 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
3230 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ), h0 );
3231 double angle = eDir.Angle( eV[0]->_normal );
3232 double cosin = Cos( angle );
3233 double cosinAbs = Abs( cosin );
3234 if ( cosinAbs > theMinSmoothCosin )
3236 // always smooth analytic EDGEs
3237 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
3238 eos._toSmooth = ! curve.IsNull();
3240 // compare tgtThick with the length of an end segment
3241 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
3242 while ( eIt->more() && !eos._toSmooth )
3244 const SMDS_MeshElement* endSeg = eIt->next();
3245 if ( endSeg->getshapeId() == (int) iS )
3248 SMESH_TNodeXYZ( endSeg->GetNode( 0 )).Distance( endSeg->GetNode( 1 ));
3249 eos._toSmooth = needSmoothing( cosinAbs, tgtThick * eV[0]->_lenFactor, segLen );
3252 if ( eos._toSmooth )
3254 eos._edgeSmoother = new _Smoother1D( curve, eos );
3256 // for ( size_t i = 0; i < eos._edges.size(); ++i )
3257 // eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
3261 data._nbShapesToSmooth += eos._toSmooth;
3265 // Reset _cosin if no smooth is allowed by the user
3266 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
3268 _EdgesOnShape& eos = edgesByGeom[iS];
3269 if ( eos._edges.empty() ) continue;
3271 if ( !eos._hyp.ToSmooth() )
3272 for ( size_t i = 0; i < eos._edges.size(); ++i )
3273 //eos._edges[i]->SetCosin( 0 ); // keep _cosin to use in limitMaxLenByCurvature()
3274 eos._edges[i]->_lenFactor = 1;
3278 // Fill _eosC1 to make that C1 FACEs and EDGEs between them to be smoothed as a whole
3280 TopTools_MapOfShape c1VV;
3282 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3284 _EdgesOnShape& eos = edgesByGeom[iS];
3285 if ( eos._edges.empty() ||
3286 eos.ShapeType() != TopAbs_FACE ||
3290 // check EDGEs of a FACE
3291 TopTools_MapOfShape checkedEE, allVV;
3292 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
3293 while ( !smQueue.empty() )
3295 SMESH_subMesh* sm = smQueue.front();
3296 smQueue.pop_front();
3297 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3298 while ( smIt->more() )
3301 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
3302 allVV.Add( sm->GetSubShape() );
3303 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
3304 !checkedEE.Add( sm->GetSubShape() ))
3307 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
3308 vector<_LayerEdge*>& eE = eoe->_edges;
3309 if ( eE.empty() || !eoe->_sWOL.IsNull() )
3312 bool isC1 = true; // check continuity along an EDGE
3313 for ( size_t i = 0; i < eE.size() && isC1; ++i )
3314 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
3318 // check that mesh faces are C1 as well
3320 gp_XYZ norm1, norm2;
3321 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
3322 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
3323 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
3325 while ( fIt->more() && isC1 )
3326 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
3327 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
3332 // add the EDGE and an adjacent FACE to _eosC1
3333 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
3334 while ( const TopoDS_Shape* face = fIt->next() )
3336 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3337 if ( !eof ) continue; // other solid
3338 if ( eos._shapeID == eof->_shapeID ) continue;
3339 if ( !eos.HasC1( eof ))
3342 eos._eosC1.push_back( eof );
3343 eof->_toSmooth = false;
3344 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3345 smQueue.push_back( eof->_subMesh );
3347 if ( !eos.HasC1( eoe ))
3349 eos._eosC1.push_back( eoe );
3350 eoe->_toSmooth = false;
3351 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3356 if ( eos._eosC1.empty() )
3359 // check VERTEXes of C1 FACEs
3360 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3361 for ( ; vIt.More(); vIt.Next() )
3363 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3364 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3367 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3368 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3369 while ( const TopoDS_Shape* face = fIt->next() )
3371 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3372 if ( !eof ) continue; // other solid
3373 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3379 eos._eosC1.push_back( eov );
3380 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3381 c1VV.Add( eov->_shape );
3385 } // fill _eosC1 of FACEs
3390 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3392 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3394 _EdgesOnShape& eov = edgesByGeom[iS];
3395 if ( eov._edges.empty() ||
3396 eov.ShapeType() != TopAbs_VERTEX ||
3397 c1VV.Contains( eov._shape ))
3399 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3401 // get directions of surrounding EDGEs
3403 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3404 while ( const TopoDS_Shape* e = fIt->next() )
3406 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3407 if ( !eoe ) continue; // other solid
3408 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V, eoe->_hyp.Get1stLayerThickness() );
3409 if ( !Precision::IsInfinite( eDir.X() ))
3410 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3413 // find EDGEs with C1 directions
3414 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3415 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3416 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3418 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3419 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3422 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3423 for ( int isJ = 0; isJ < 2; ++isJ ) // loop on [i,j]
3425 size_t k = isJ ? j : i;
3426 const TopoDS_Edge& e = TopoDS::Edge( dirOfEdges[k].first->_shape );
3427 double eLen = SMESH_Algo::EdgeLength( e );
3428 if ( eLen < maxEdgeLen )
3430 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
3431 if ( oppV.IsSame( V ))
3432 oppV = SMESH_MesherHelper::IthVertex( 1, e );
3433 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
3434 if ( dirOfEdges[k].second * eovOpp->_edges[0]->_normal < 0 )
3435 eov._eosC1.push_back( dirOfEdges[k].first );
3437 dirOfEdges[k].first = 0;
3441 } // fill _eosC1 of VERTEXes
3448 //================================================================================
3450 * \brief Set up _SolidData::_edgesOnShape
3452 //================================================================================
3454 int _ViscousBuilder::makeEdgesOnShape()
3456 const int nbShapes = getMeshDS()->MaxShapeIndex();
3459 for ( size_t i = 0; i < _sdVec.size(); ++i )
3461 _SolidData& data = _sdVec[ i ];
3462 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3463 edgesByGeom.resize( nbShapes+1 );
3465 // set data of _EdgesOnShape's
3467 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
3469 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3470 while ( smIt->more() )
3473 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
3474 data._ignoreFaceIds.count( sm->GetId() ))
3477 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
3479 nbShapesWL += ( sm->GetSubShape().ShapeType() == TopAbs_FACE );
3482 if ( nbShapesWL == 0 ) // no shapes with layers in a SOLID
3485 SMESHUtils::FreeVector( edgesByGeom );
3495 //================================================================================
3497 * \brief initialize data of _EdgesOnShape
3499 //================================================================================
3501 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3505 if ( !eos._shape.IsNull() ||
3506 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3509 SMESH_MesherHelper helper( *_mesh );
3512 eos._shapeID = sm->GetId();
3513 eos._shape = sm->GetSubShape();
3514 if ( eos.ShapeType() == TopAbs_FACE )
3515 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3516 eos._toSmooth = false;
3518 eos._mapper2D = nullptr;
3521 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3522 data._shrinkShape2Shape.find( eos._shapeID );
3523 if ( s2s != data._shrinkShape2Shape.end() )
3524 eos._sWOL = s2s->second;
3526 eos._isRegularSWOL = true;
3527 if ( eos.SWOLType() == TopAbs_FACE )
3529 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3530 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3531 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3535 if ( data._hyps.size() == 1 )
3537 eos._hyp = data._hyps.back();
3541 // compute average StdMeshers_ViscousLayers parameters
3542 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3543 if ( eos.ShapeType() == TopAbs_FACE )
3545 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3546 eos._hyp = f2hyp->second;
3550 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3551 while ( const TopoDS_Shape* face = fIt->next() )
3553 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3554 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3555 eos._hyp.Add( f2hyp->second );
3561 if ( ! eos._hyp.UseSurfaceNormal() )
3563 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3565 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3566 if ( !smDS ) return;
3567 eos._faceNormals.reserve( smDS->NbElements() );
3569 double oriFactor = helper.IsReversedSubMesh( TopoDS::Face( eos._shape )) ? 1.: -1.;
3570 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3571 for ( ; eIt->more(); )
3573 const SMDS_MeshElement* face = eIt->next();
3574 gp_XYZ& norm = eos._faceNormals[face];
3575 if ( !SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
3576 norm.SetCoord( 0,0,0 );
3580 else // find EOS of adjacent FACEs
3582 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3583 while ( const TopoDS_Shape* face = fIt->next() )
3585 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3586 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3587 if ( eos._faceEOS.back()->_shape.IsNull() )
3588 // avoid using uninitialised _shapeID in GetNormal()
3589 eos._faceEOS.back()->_shapeID = faceID;
3595 //================================================================================
3597 * \brief Returns normal of a face
3599 //================================================================================
3601 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3604 _EdgesOnShape* eos = 0;
3606 if ( face->getshapeId() == _shapeID )
3612 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3613 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3614 eos = _faceEOS[ iF ];
3618 ( ok = ( eos->_faceNormals.count( face ) )))
3620 norm = eos->_faceNormals[ face ];
3624 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3625 << " on _shape #" << _shapeID );
3630 //================================================================================
3632 * \brief EdgesOnShape destructor
3634 //================================================================================
3636 _EdgesOnShape::~_EdgesOnShape()
3638 delete _edgeSmoother;
3642 //================================================================================
3644 * \brief Set data of _LayerEdge needed for smoothing
3646 //================================================================================
3648 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3650 SMESH_MesherHelper& helper,
3653 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3656 edge._maxLen = Precision::Infinite();
3659 edge._curvature = 0;
3661 edge._smooFunction = 0;
3663 // --------------------------
3664 // Compute _normal and _cosin
3665 // --------------------------
3668 edge._lenFactor = 1.;
3669 edge._normal.SetCoord(0,0,0);
3670 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3672 int totalNbFaces = 0;
3674 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3678 const bool onShrinkShape = !eos._sWOL.IsNull();
3679 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3680 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3682 // get geom FACEs the node lies on
3683 //if ( useGeometry )
3685 set<TGeomID> faceIds;
3686 if ( eos.ShapeType() == TopAbs_FACE )
3688 faceIds.insert( eos._shapeID );
3692 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3693 while ( fIt->more() )
3694 faceIds.insert( fIt->next()->getshapeId() );
3696 set<TGeomID>::iterator id = faceIds.begin();
3697 for ( ; id != faceIds.end(); ++id )
3699 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3700 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3702 F = TopoDS::Face( s );
3703 face2Norm[ totalNbFaces ].first = F;
3709 bool fromVonF = false;
3712 fromVonF = ( eos.ShapeType() == TopAbs_VERTEX &&
3713 eos.SWOLType() == TopAbs_FACE &&
3716 if ( onShrinkShape && !fromVonF ) // one of faces the node is on has no layers
3718 if ( eos.SWOLType() == TopAbs_EDGE )
3720 // inflate from VERTEX along EDGE
3721 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3722 eos._hyp.Get1stLayerThickness(), &eos._isRegularSWOL );
3724 else if ( eos.ShapeType() == TopAbs_VERTEX )
3726 // inflate from VERTEX along FACE
3727 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3728 node, helper, normOK/*, &edge._cosin*/);
3732 // inflate from EDGE along FACE
3733 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3734 node, helper, normOK);
3737 else // layers are on all FACEs of SOLID the node is on (or fromVonF)
3740 face2Norm[ totalNbFaces++ ].first = TopoDS::Face( eos._sWOL );
3743 for ( int iF = totalNbFaces - 1; iF >= 0; --iF )
3745 F = face2Norm[ iF ].first;
3746 geomNorm = getFaceNormal( node, F, helper, normOK );
3747 if ( !normOK ) continue;
3750 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3752 face2Norm[ iF ].second = geomNorm.XYZ();
3753 edge._normal += geomNorm.XYZ();
3755 if ( nbOkNorms == 0 )
3756 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3758 if ( totalNbFaces >= 3 )
3760 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces, fromVonF );
3763 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3765 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3766 edge._normal.SetCoord( 0,0,0 );
3767 for ( int iF = 0; iF < totalNbFaces - fromVonF; ++iF )
3769 const TopoDS_Face& F = face2Norm[iF].first;
3770 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3771 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3774 face2Norm[ iF ].second = geomNorm.XYZ();
3775 edge._normal += face2Norm[ iF ].second;
3780 else // !useGeometry - get _normal using surrounding mesh faces
3782 edge._normal = getWeigthedNormal( &edge );
3784 // set<TGeomID> faceIds;
3786 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3787 // while ( fIt->more() )
3789 // const SMDS_MeshElement* face = fIt->next();
3790 // if ( eos.GetNormal( face, geomNorm ))
3792 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3793 // continue; // use only one mesh face on FACE
3794 // edge._normal += geomNorm.XYZ();
3801 //if ( eos._hyp.UseSurfaceNormal() )
3803 switch ( eos.ShapeType() )
3810 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3811 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3812 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3813 edge._cosin = Cos( angle );
3816 case TopAbs_VERTEX: {
3817 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3818 gp_Vec inFaceDir = getFaceDir( face2Norm[0].first , V, node, helper, normOK );
3819 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3820 edge._cosin = Cos( angle );
3823 if ( totalNbFaces > 1 || helper.IsSeamShape( node->getshapeId() ))
3824 for ( int iF = 1; iF < totalNbFaces; ++iF )
3826 F = face2Norm[ iF ].first;
3827 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3829 if ( onShrinkShape )
3831 gp_Vec faceNorm = getFaceNormal( node, F, helper, normOK );
3832 if ( !normOK ) continue;
3833 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3835 angle = 0.5 * M_PI - faceNorm.Angle( edge._normal );
3836 if ( inFaceDir * edge._normal < 0 )
3837 angle = M_PI - angle;
3841 angle = inFaceDir.Angle( edge._normal );
3843 double cosin = Cos( angle );
3844 if ( Abs( cosin ) > Abs( edge._cosin ))
3845 edge._cosin = cosin;
3851 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3855 double normSize = edge._normal.SquareModulus();
3856 if ( normSize < numeric_limits<double>::min() )
3857 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3859 edge._normal /= sqrt( normSize );
3861 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3863 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3864 edge._nodes.resize( 1 );
3865 edge._normal.SetCoord( 0,0,0 );
3866 edge.SetMaxLen( 0 );
3869 // Set the rest data
3870 // --------------------
3872 double realLenFactor = edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3873 // if ( realLenFactor > 3 )
3876 // if ( onShrinkShape )
3878 // edge.Set( _LayerEdge::RISKY_SWOL );
3879 // edge._lenFactor = 2;
3883 // edge._lenFactor = 1;
3887 if ( onShrinkShape )
3889 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3890 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3891 sm->RemoveNode( tgtNode );
3893 // set initial position which is parameters on _sWOL in this case
3894 if ( eos.SWOLType() == TopAbs_EDGE )
3896 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3897 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3898 if ( edge._nodes.size() > 1 )
3899 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3901 else // eos.SWOLType() == TopAbs_FACE
3903 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3904 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3905 if ( edge._nodes.size() > 1 )
3906 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3909 //if ( edge._nodes.size() > 1 ) -- allow RISKY_SWOL on noShrink shape
3911 // check if an angle between a FACE with layers and SWOL is sharp,
3912 // else the edge should not inflate
3914 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3915 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3916 F = face2Norm[iF].first;
3919 geomNorm = getFaceNormal( node, F, helper, normOK );
3920 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3921 geomNorm.Reverse(); // inside the SOLID
3922 if ( geomNorm * edge._normal < -0.001 )
3924 if ( edge._nodes.size() > 1 )
3926 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3927 edge._nodes.resize( 1 );
3930 else if ( realLenFactor > 3 ) /// -- moved to SetCosin()
3931 //else if ( edge._lenFactor > 3 )
3933 edge._lenFactor = 2;
3934 edge.Set( _LayerEdge::RISKY_SWOL );
3941 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3943 if ( eos.ShapeType() == TopAbs_FACE )
3946 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3948 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3949 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3954 // Set neighbor nodes for a _LayerEdge based on EDGE
3956 if ( eos.ShapeType() == TopAbs_EDGE /*||
3957 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3959 edge._2neibors = _Factory::NewNearEdges();
3960 // target nodes instead of source ones will be set later
3966 //================================================================================
3968 * \brief Return normal to a FACE at a node
3969 * \param [in] n - node
3970 * \param [in] face - FACE
3971 * \param [in] helper - helper
3972 * \param [out] isOK - true or false
3973 * \param [in] shiftInside - to find normal at a position shifted inside the face
3974 * \return gp_XYZ - normal
3976 //================================================================================
3978 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3979 const TopoDS_Face& face,
3980 SMESH_MesherHelper& helper,
3987 // get a shifted position
3988 gp_Pnt p = SMESH_TNodeXYZ( node );
3989 gp_XYZ shift( 0,0,0 );
3990 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
3991 switch ( S.ShapeType() ) {
3994 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
3999 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
4007 p.Translate( shift * 1e-5 );
4009 TopLoc_Location loc;
4010 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
4012 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
4014 projector.Perform( p );
4015 if ( !projector.IsDone() || projector.NbPoints() < 1 )
4021 projector.LowerDistanceParameters(U,V);
4026 uv = helper.GetNodeUV( face, node, 0, &isOK );
4032 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
4034 if ( !shiftInside &&
4035 helper.IsDegenShape( node->getshapeId() ) &&
4036 getFaceNormalAtSingularity( uv, face, helper, normal ))
4039 return normal.XYZ();
4042 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
4043 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4045 if ( pointKind == IMPOSSIBLE &&
4046 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
4048 // probably NormEstim() failed due to a too high tolerance
4049 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
4050 isOK = ( pointKind < IMPOSSIBLE );
4052 if ( pointKind < IMPOSSIBLE )
4054 if ( pointKind != REGULAR &&
4056 node->GetPosition()->GetDim() < 2 ) // FACE boundary
4058 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
4059 if ( normShift * normal.XYZ() < 0. )
4065 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
4067 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
4069 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4070 while ( fIt->more() )
4072 const SMDS_MeshElement* f = fIt->next();
4073 if ( f->getshapeId() == faceID )
4075 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
4078 TopoDS_Face ff = face;
4079 ff.Orientation( TopAbs_FORWARD );
4080 if ( helper.IsReversedSubMesh( ff ))
4087 return normal.XYZ();
4090 //================================================================================
4092 * \brief Try to get normal at a singularity of a surface basing on it's nature
4094 //================================================================================
4096 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
4097 const TopoDS_Face& face,
4098 SMESH_MesherHelper& /*helper*/,
4101 BRepAdaptor_Surface surface( face );
4103 if ( !getRovolutionAxis( surface, axis ))
4106 double f,l, d, du, dv;
4107 f = surface.FirstUParameter();
4108 l = surface.LastUParameter();
4109 d = ( uv.X() - f ) / ( l - f );
4110 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4111 f = surface.FirstVParameter();
4112 l = surface.LastVParameter();
4113 d = ( uv.Y() - f ) / ( l - f );
4114 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4117 gp_Pnt2d testUV = uv;
4118 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4120 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
4121 for ( int iLoop = 0; true ; ++iLoop )
4123 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
4124 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
4131 if ( axis * refDir < 0. )
4139 //================================================================================
4141 * \brief Return a normal at a node weighted with angles taken by faces
4143 //================================================================================
4145 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
4147 const SMDS_MeshNode* n = edge->_nodes[0];
4149 gp_XYZ resNorm(0,0,0);
4150 SMESH_TNodeXYZ p0( n ), pP, pN;
4151 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
4153 pP.Set( edge->_simplices[i]._nPrev );
4154 pN.Set( edge->_simplices[i]._nNext );
4155 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
4156 double l0P = v0P.SquareMagnitude();
4157 double l0N = v0N.SquareMagnitude();
4158 double lPN = vPN.SquareMagnitude();
4159 if ( l0P < std::numeric_limits<double>::min() ||
4160 l0N < std::numeric_limits<double>::min() ||
4161 lPN < std::numeric_limits<double>::min() )
4163 double lNorm = norm.SquareMagnitude();
4164 double sin2 = lNorm / l0P / l0N;
4165 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
4167 double weight = sin2 * angle / lPN;
4168 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
4174 //================================================================================
4176 * \brief Return a normal at a node by getting a common point of offset planes
4177 * defined by the FACE normals
4179 //================================================================================
4181 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
4182 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
4186 SMESH_TNodeXYZ p0 = edge->_nodes[0];
4188 gp_XYZ resNorm(0,0,0);
4189 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
4190 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
4192 for ( int i = 0; i < nbFaces; ++i )
4193 resNorm += f2Normal[i].second;
4197 // prepare _OffsetPlane's
4198 vector< _OffsetPlane > pln( nbFaces );
4199 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4201 pln[i]._faceIndex = i;
4202 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
4206 pln[ nbFaces - 1 ]._faceIndex = nbFaces - 1;
4207 pln[ nbFaces - 1 ]._plane = gp_Pln( p0, f2Normal[ nbFaces - 1 ].second );
4210 // intersect neighboring OffsetPlane's
4211 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
4212 while ( const TopoDS_Shape* edge = edgeIt->next() )
4214 int f1 = -1, f2 = -1;
4215 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
4216 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
4217 (( f1 < 0 ) ? f1 : f2 ) = i;
4220 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ], TopoDS::Edge( *edge ), TopoDS::Vertex( V ));
4223 // get a common point
4224 gp_XYZ commonPnt( 0, 0, 0 );
4227 for ( int i = 0; i < nbFaces; ++i )
4229 commonPnt += pln[ i ].GetCommonPoint( isPointFound, TopoDS::Vertex( V ));
4230 nbPoints += isPointFound;
4232 gp_XYZ wgtNorm = getWeigthedNormal( edge );
4233 if ( nbPoints == 0 )
4236 commonPnt /= nbPoints;
4237 resNorm = commonPnt - p0;
4241 // choose the best among resNorm and wgtNorm
4242 resNorm.Normalize();
4243 wgtNorm.Normalize();
4244 double resMinDot = std::numeric_limits<double>::max();
4245 double wgtMinDot = std::numeric_limits<double>::max();
4246 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4248 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
4249 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
4252 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
4254 edge->Set( _LayerEdge::MULTI_NORMAL );
4257 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
4260 //================================================================================
4262 * \brief Compute line of intersection of 2 planes
4264 //================================================================================
4266 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln,
4267 const TopoDS_Edge& E,
4268 const TopoDS_Vertex& V )
4270 int iNext = bool( _faceIndexNext[0] >= 0 );
4271 _faceIndexNext[ iNext ] = pln._faceIndex;
4273 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
4274 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
4276 gp_XYZ lineDir = n1 ^ n2;
4278 double x = Abs( lineDir.X() );
4279 double y = Abs( lineDir.Y() );
4280 double z = Abs( lineDir.Z() );
4282 int cooMax; // max coordinate
4284 if (x > z) cooMax = 1;
4288 if (y > z) cooMax = 2;
4293 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
4295 // parallel planes - intersection is an offset of the common EDGE
4296 gp_Pnt p = BRep_Tool::Pnt( V );
4297 linePos = 0.5 * (( p.XYZ() + n1 ) + ( p.XYZ() + n2 ));
4298 lineDir = getEdgeDir( E, V, 0.1 * SMESH_Algo::EdgeLength( E ));
4302 // the constants in the 2 plane equations
4303 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
4304 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
4309 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
4310 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
4313 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
4315 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
4318 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
4319 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
4323 gp_Lin& line = _lines[ iNext ];
4324 line.SetDirection( lineDir );
4325 line.SetLocation ( linePos );
4327 _isLineOK[ iNext ] = true;
4330 iNext = bool( pln._faceIndexNext[0] >= 0 );
4331 pln._lines [ iNext ] = line;
4332 pln._faceIndexNext[ iNext ] = this->_faceIndex;
4333 pln._isLineOK [ iNext ] = true;
4336 //================================================================================
4338 * \brief Computes intersection point of two _lines
4340 //================================================================================
4342 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound,
4343 const TopoDS_Vertex & V) const
4348 if ( NbLines() == 2 )
4350 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
4351 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
4352 if ( Abs( dot01 ) > 0.05 )
4354 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
4355 double u1 = - ( lPerp0 * l0l1 ) / dot01;
4356 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
4361 gp_Pnt pV ( BRep_Tool::Pnt( V ));
4362 gp_Vec lv0( _lines[0].Location(), pV ), lv1(_lines[1].Location(), pV );
4363 double dot0( lv0 * _lines[0].Direction() ), dot1( lv1 * _lines[1].Direction() );
4364 p += 0.5 * ( _lines[0].Location().XYZ() + _lines[0].Direction().XYZ() * dot0 );
4365 p += 0.5 * ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * dot1 );
4373 //================================================================================
4375 * \brief Find 2 neighbor nodes of a node on EDGE
4377 //================================================================================
4379 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
4380 const SMDS_MeshNode*& n1,
4381 const SMDS_MeshNode*& n2,
4385 const SMDS_MeshNode* node = edge->_nodes[0];
4386 const int shapeInd = eos._shapeID;
4387 SMESHDS_SubMesh* edgeSM = 0;
4388 if ( eos.ShapeType() == TopAbs_EDGE )
4390 edgeSM = eos._subMesh->GetSubMeshDS();
4391 if ( !edgeSM || edgeSM->NbElements() == 0 )
4392 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
4396 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
4397 while ( eIt->more() && !n2 )
4399 const SMDS_MeshElement* e = eIt->next();
4400 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
4401 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
4404 if (!edgeSM->Contains(e)) continue;
4408 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
4409 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
4411 ( iN++ ? n2 : n1 ) = nNeibor;
4414 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
4418 //================================================================================
4420 * \brief Create _Curvature
4422 //================================================================================
4424 _Curvature* _Curvature::New( double avgNormProj, double avgDist )
4426 // double _r; // radius
4427 // double _k; // factor to correct node smoothed position
4428 // double _h2lenRatio; // avgNormProj / (2*avgDist)
4429 // gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
4432 if ( fabs( avgNormProj / avgDist ) > 1./200 )
4434 c = _Factory::NewCurvature();
4435 c->_r = avgDist * avgDist / avgNormProj;
4436 c->_k = avgDist * avgDist / c->_r / c->_r;
4437 //c->_k = avgNormProj / c->_r;
4438 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
4439 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
4441 c->_uv.SetCoord( 0., 0. );
4446 //================================================================================
4448 * \brief Set _curvature and _2neibors->_plnNorm by 2 neighbor nodes residing the same EDGE
4450 //================================================================================
4452 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
4453 const SMDS_MeshNode* n2,
4454 const _EdgesOnShape& eos,
4455 SMESH_MesherHelper& helper)
4457 if ( eos.ShapeType() != TopAbs_EDGE )
4459 if ( _curvature && Is( SMOOTHED_C1 ))
4462 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
4463 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
4464 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
4468 double sumLen = vec1.Modulus() + vec2.Modulus();
4469 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
4470 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
4471 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
4472 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
4473 _curvature = _Curvature::New( avgNormProj, avgLen );
4474 // if ( _curvature )
4475 // debugMsg( _nodes[0]->GetID()
4476 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
4477 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
4478 // << _curvature->lenDelta(0) );
4482 if ( eos._sWOL.IsNull() )
4484 TopoDS_Edge E = TopoDS::Edge( eos._shape );
4485 // if ( SMESH_Algo::isDegenerated( E ))
4487 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
4488 gp_XYZ plnNorm = dirE ^ _normal;
4489 double proj0 = plnNorm * vec1;
4490 double proj1 = plnNorm * vec2;
4491 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
4493 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
4494 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
4499 //================================================================================
4501 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4502 * this and the other _LayerEdge are inflated along a FACE or an EDGE
4504 //================================================================================
4506 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4508 SMESH_MesherHelper& helper )
4510 _nodes = other._nodes;
4511 _normal = other._normal;
4513 _lenFactor = other._lenFactor;
4514 _cosin = other._cosin;
4515 _2neibors = other._2neibors;
4516 _curvature = other._curvature;
4517 _2neibors = other._2neibors;
4518 _maxLen = Precision::Infinite();//other._maxLen;
4522 gp_XYZ lastPos( 0,0,0 );
4523 if ( eos.SWOLType() == TopAbs_EDGE )
4525 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4526 _pos.push_back( gp_XYZ( u, 0, 0));
4528 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4533 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4534 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4536 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4537 lastPos.SetX( uv.X() );
4538 lastPos.SetY( uv.Y() );
4543 //================================================================================
4545 * \brief Set _cosin and _lenFactor
4547 //================================================================================
4549 double _LayerEdge::SetCosin( double cosin )
4552 cosin = Abs( _cosin );
4553 //_lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4554 double realLenFactor;
4555 if ( cosin < 1.-1e-12 )
4557 _lenFactor = realLenFactor = 1./sqrt(1-cosin*cosin );
4562 realLenFactor = Precision::Infinite();
4565 return realLenFactor;
4568 //================================================================================
4570 * \brief Check if another _LayerEdge is a neighbor on EDGE
4572 //================================================================================
4574 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4576 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4577 ( edge->_2neibors && edge->_2neibors->include( this )));
4580 //================================================================================
4582 * \brief Fills a vector<_Simplex >
4584 //================================================================================
4586 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4587 vector<_Simplex>& simplices,
4588 const set<TGeomID>& ingnoreShapes,
4589 const _SolidData* dataToCheckOri,
4593 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4594 while ( fIt->more() )
4596 const SMDS_MeshElement* f = fIt->next();
4597 const TGeomID shapeInd = f->getshapeId();
4598 if ( ingnoreShapes.count( shapeInd )) continue;
4599 const int nbNodes = f->NbCornerNodes();
4600 const int srcInd = f->GetNodeIndex( node );
4601 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4602 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4603 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4604 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4605 std::swap( nPrev, nNext );
4606 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4610 SortSimplices( simplices );
4613 //================================================================================
4615 * \brief Set neighbor simplices side by side
4617 //================================================================================
4619 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4621 vector<_Simplex> sortedSimplices( simplices.size() );
4622 sortedSimplices[0] = simplices[0];
4624 for ( size_t i = 1; i < simplices.size(); ++i )
4626 for ( size_t j = 1; j < simplices.size(); ++j )
4627 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4629 sortedSimplices[i] = simplices[j];
4634 if ( nbFound == simplices.size() - 1 )
4635 simplices.swap( sortedSimplices );
4638 //================================================================================
4640 * \brief DEBUG. Create groups containing temporary data of _LayerEdge's
4642 //================================================================================
4644 void _ViscousBuilder::makeGroupOfLE()
4647 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4649 if ( _sdVec[i]._n2eMap.empty() ) continue;
4651 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4652 TNode2Edge::iterator n2e;
4653 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4655 _LayerEdge* le = n2e->second;
4656 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4657 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4658 // << ", " << le->_nodes[iN]->GetID() <<"])");
4660 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4661 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4666 dumpFunction( SMESH_Comment("makeNormals") << i );
4667 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4669 _LayerEdge* edge = n2e->second;
4670 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4671 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4672 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4673 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4677 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4678 dumpCmd( "faceId1 = mesh.NbElements()" );
4679 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4680 for ( ; fExp.More(); fExp.Next() )
4682 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4684 if ( sm->NbElements() == 0 ) continue;
4685 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4686 while ( fIt->more())
4688 const SMDS_MeshElement* e = fIt->next();
4689 SMESH_Comment cmd("mesh.AddFace([");
4690 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4691 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4696 dumpCmd( "faceId2 = mesh.NbElements()" );
4697 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4698 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4699 << "'%s-%s' % (faceId1+1, faceId2))");
4705 //================================================================================
4707 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4709 //================================================================================
4711 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4713 data._geomSize = Precision::Infinite();
4714 double intersecDist;
4715 const SMDS_MeshElement* face;
4716 SMESH_MesherHelper helper( *_mesh );
4718 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4719 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4720 data._proxyMesh->GetFaces( data._solid )));
4722 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4724 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4725 if ( eos._edges.empty() )
4727 // get neighbor faces, intersection with which should not be considered since
4728 // collisions are avoided by means of smoothing
4729 set< TGeomID > neighborFaces;
4730 if ( eos._hyp.ToSmooth() )
4732 SMESH_subMeshIteratorPtr subIt =
4733 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4734 while ( subIt->more() )
4736 SMESH_subMesh* sm = subIt->next();
4737 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4738 while ( const TopoDS_Shape* face = fIt->next() )
4739 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4742 // find intersections
4743 double thinkness = eos._hyp.GetTotalThickness();
4744 for ( size_t i = 0; i < eos._edges.size(); ++i )
4746 if ( eos._edges[i]->_nodes.size() < 2 ) continue;
4747 eos._edges[i]->SetMaxLen( thinkness );
4748 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4749 if ( intersecDist > 0 && face )
4751 data._geomSize = Min( data._geomSize, intersecDist );
4752 if ( !neighborFaces.count( face->getshapeId() ))
4753 eos[i]->SetMaxLen( Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. )));
4758 data._maxThickness = 0;
4759 data._minThickness = 1e100;
4760 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
4761 for ( ; hyp != data._hyps.end(); ++hyp )
4763 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
4764 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
4767 // Limit inflation step size by geometry size found by intersecting
4768 // normals of _LayerEdge's with mesh faces
4769 if ( data._stepSize > 0.3 * data._geomSize )
4770 limitStepSize( data, 0.3 * data._geomSize );
4772 if ( data._stepSize > data._minThickness )
4773 limitStepSize( data, data._minThickness );
4776 // -------------------------------------------------------------------------
4777 // Detect _LayerEdge which can't intersect with opposite or neighbor layer,
4778 // so no need in detecting intersection at each inflation step
4779 // -------------------------------------------------------------------------
4781 int nbSteps = data._maxThickness / data._stepSize;
4782 if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 )
4785 vector< const SMDS_MeshElement* > closeFaces;
4788 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4790 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4791 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
4794 for ( size_t i = 0; i < eos.size(); ++i )
4796 SMESH_NodeXYZ p( eos[i]->_nodes[0] );
4797 double radius = data._maxThickness + 2 * eos[i]->_maxLen;
4799 searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces );
4801 bool toIgnore = true;
4802 for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF )
4803 if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID ||
4804 data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() ))))
4806 // check if a _LayerEdge will inflate in a direction opposite to a direction
4807 // toward a close face
4808 bool allBehind = true;
4809 for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN )
4811 SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN ));
4812 allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize );
4814 toIgnore = allBehind;
4818 if ( toIgnore ) // no need to detect intersection
4820 eos[i]->Set( _LayerEdge::INTERSECTED );
4826 debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected );
4831 //================================================================================
4833 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4835 //================================================================================
4837 bool _ViscousBuilder::inflate(_SolidData& data)
4839 SMESH_MesherHelper helper( *_mesh );
4841 const double tgtThick = data._maxThickness;
4843 if ( data._stepSize < 1. )
4844 data._epsilon = data._stepSize * 1e-7;
4846 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4849 findCollisionEdges( data, helper );
4851 limitMaxLenByCurvature( data, helper );
4855 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4856 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4857 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4858 data._edgesOnShape[i]._edges.size() > 0 &&
4859 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4861 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4862 data._edgesOnShape[i]._edges[0]->Block( data );
4865 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4867 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4868 int nbSteps = 0, nbRepeats = 0;
4869 while ( avgThick < 0.99 )
4871 // new target length
4872 double prevThick = curThick;
4873 curThick += data._stepSize;
4874 if ( curThick > tgtThick )
4876 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4880 double stepSize = curThick - prevThick;
4881 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4883 // Elongate _LayerEdge's
4884 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4885 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4887 _EdgesOnShape& eos = data._edgesOnShape[iS];
4888 if ( eos._edges.empty() ) continue;
4890 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4891 for ( size_t i = 0; i < eos._edges.size(); ++i )
4893 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4898 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4901 // Improve and check quality
4902 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4906 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4907 debugMsg("NOT INVALIDATED STEP!");
4908 return error("Smoothing failed", data._index);
4910 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4911 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4913 _EdgesOnShape& eos = data._edgesOnShape[iS];
4914 for ( size_t i = 0; i < eos._edges.size(); ++i )
4915 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4919 break; // no more inflating possible
4923 // Evaluate achieved thickness
4925 int nbActiveEdges = 0;
4926 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4928 _EdgesOnShape& eos = data._edgesOnShape[iS];
4929 if ( eos._edges.empty() ) continue;
4931 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4932 for ( size_t i = 0; i < eos._edges.size(); ++i )
4934 if ( eos._edges[i]->_nodes.size() > 1 )
4935 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4937 avgThick += shapeTgtThick;
4938 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4941 avgThick /= data._n2eMap.size();
4942 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4944 #ifdef BLOCK_INFLATION
4945 if ( nbActiveEdges == 0 )
4947 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4951 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4953 debugMsg( "-- Stop inflation since "
4954 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4955 << tgtThick * avgThick << " ) * " << safeFactor );
4961 limitStepSize( data, 0.25 * distToIntersection );
4962 if ( data._stepSizeNodes[0] )
4963 data._stepSize = data._stepSizeCoeff *
4964 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4966 } // while ( avgThick < 0.99 )
4969 return error("failed at the very first inflation step", data._index);
4971 if ( avgThick < 0.99 )
4973 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4975 data._proxyMesh->_warning.reset
4976 ( new SMESH_ComputeError (COMPERR_WARNING,
4977 SMESH_Comment("Thickness ") << tgtThick <<
4978 " of viscous layers not reached,"
4979 " average reached thickness is " << avgThick*tgtThick));
4983 // Restore position of src nodes moved by inflation on _noShrinkShapes
4984 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
4985 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4987 _EdgesOnShape& eos = data._edgesOnShape[iS];
4988 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
4989 for ( size_t i = 0; i < eos._edges.size(); ++i )
4991 restoreNoShrink( *eos._edges[ i ] );
4996 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
4999 //================================================================================
5001 * \brief Improve quality of layer inner surface and check intersection
5003 //================================================================================
5005 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
5007 double & distToIntersection)
5009 if ( data._nbShapesToSmooth == 0 )
5010 return true; // no shapes needing smoothing
5012 bool moved, improved;
5014 vector< _LayerEdge* > movedEdges, badEdges;
5015 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
5016 vector< bool > isConcaveFace;
5018 SMESH_MesherHelper helper(*_mesh);
5019 Handle(ShapeAnalysis_Surface) surface;
5022 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
5024 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
5026 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5028 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5029 if ( !eos._toSmooth ||
5030 eos.ShapeType() != shapeType ||
5031 eos._edges.empty() )
5034 // already smoothed?
5035 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
5036 // if ( !toSmooth ) continue;
5038 if ( !eos._hyp.ToSmooth() )
5040 // smooth disabled by the user; check validy only
5041 if ( !isFace ) continue;
5043 for ( size_t i = 0; i < eos._edges.size(); ++i )
5045 _LayerEdge* edge = eos._edges[i];
5046 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
5047 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
5049 // debugMsg( "-- Stop inflation. Bad simplex ("
5050 // << " "<< edge->_nodes[0]->GetID()
5051 // << " "<< edge->_nodes.back()->GetID()
5052 // << " "<< edge->_simplices[iF]._nPrev->GetID()
5053 // << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
5055 badEdges.push_back( edge );
5058 if ( !badEdges.empty() )
5062 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5066 continue; // goto the next EDGE or FACE
5070 if ( eos.SWOLType() == TopAbs_FACE )
5072 if ( !F.IsSame( eos._sWOL )) {
5073 F = TopoDS::Face( eos._sWOL );
5074 helper.SetSubShape( F );
5075 surface = helper.GetSurface( F );
5080 F.Nullify(); surface.Nullify();
5082 const TGeomID sInd = eos._shapeID;
5084 // perform smoothing
5086 if ( eos.ShapeType() == TopAbs_EDGE )
5088 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
5090 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
5092 // smooth on EDGE's (normally we should not get here)
5096 for ( size_t i = 0; i < eos._edges.size(); ++i )
5098 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
5100 dumpCmd( SMESH_Comment("# end step ")<<step);
5102 while ( moved && step++ < 5 );
5107 else // smooth on FACE
5110 eosC1.push_back( & eos );
5111 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
5114 isConcaveFace.resize( eosC1.size() );
5115 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5117 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
5119 if ( eosC1[ iEOS ]->_mapper2D )
5121 // compute node position by boundary node position in structured mesh
5122 dumpFunction(SMESH_Comment("map2dS")<<data._index<<"_Fa"<<eos._shapeID
5123 <<"_InfStep"<<infStep);
5125 eosC1[ iEOS ]->_mapper2D->ComputeNodePositions();
5127 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5128 le->_pos.back() = SMESH_NodeXYZ( le->_nodes.back() );
5134 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5135 if ( le->Is( _LayerEdge::MOVED ) ||
5136 le->Is( _LayerEdge::NEAR_BOUNDARY ))
5137 movedEdges.push_back( le );
5139 makeOffsetSurface( *eosC1[ iEOS ], helper );
5142 int step = 0, stepLimit = 5, nbBad = 0;
5143 while (( ++step <= stepLimit ) || improved )
5145 int oldBadNb = nbBad;
5148 #ifdef INCREMENTAL_SMOOTH
5149 // smooth moved only
5150 if ( !movedEdges.empty() )
5151 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5152 <<"_InfStep"<<infStep<<"_"<<step); // debug
5153 bool findBest = false; // ( step == stepLimit );
5154 for ( size_t i = 0; i < movedEdges.size(); ++i )
5156 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
5157 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
5158 badEdges.push_back( movedEdges[i] );
5162 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5163 <<"_InfStep"<<infStep<<"_"<<step); // debug
5164 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
5165 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5167 if ( eosC1[ iEOS ]->_mapper2D )
5169 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
5170 for ( size_t i = 0; i < edges.size(); ++i )
5172 edges[i]->Unset( _LayerEdge::SMOOTHED );
5173 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
5174 badEdges.push_back( eos._edges[i] );
5178 nbBad = badEdges.size();
5181 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5183 if ( !badEdges.empty() && step >= stepLimit / 2 )
5185 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
5188 // resolve hard smoothing situation around concave VERTEXes
5189 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5191 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
5192 for ( size_t i = 0; i < eosCoVe.size(); ++i )
5193 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
5196 // look for the best smooth of _LayerEdge's neighboring badEdges
5198 for ( size_t i = 0; i < badEdges.size(); ++i )
5200 _LayerEdge* ledge = badEdges[i];
5201 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
5203 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
5204 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
5206 ledge->Unset( _LayerEdge::SMOOTHED );
5207 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
5209 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5212 if ( nbBad == oldBadNb &&
5214 step < stepLimit ) // smooth w/o check of validity
5217 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
5218 <<"_InfStep"<<infStep<<"_"<<step); // debug
5219 for ( size_t i = 0; i < movedEdges.size(); ++i )
5221 movedEdges[i]->SmoothWoCheck();
5223 if ( stepLimit < 9 )
5227 improved = ( nbBad < oldBadNb );
5231 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
5232 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5234 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1, step, /*moveAll=*/step == 1 );
5237 } // smoothing steps
5239 // project -- to prevent intersections or to fix bad simplices
5240 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5242 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
5243 putOnOffsetSurface( *eosC1[ iEOS ], -infStep, eosC1 );
5246 //if ( !badEdges.empty() )
5249 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5251 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5253 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5255 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5256 edge->CheckNeiborsOnBoundary( & badEdges );
5257 if (( nbBad > 0 ) ||
5258 ( edge->Is( _LayerEdge::BLOCKED ) && edge->Is( _LayerEdge::NEAR_BOUNDARY )))
5260 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5261 gp_XYZ prevXYZ = edge->PrevCheckPos();
5262 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5263 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5265 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
5266 << " "<< tgtXYZ._node->GetID()
5267 << " "<< edge->_simplices[j]._nPrev->GetID()
5268 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5269 badEdges.push_back( edge );
5276 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5277 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5283 } // // smooth on FACE's
5285 } // smooth on [ EDGEs, FACEs ]
5287 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
5289 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5291 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5292 if ( eos.ShapeType() == TopAbs_FACE ||
5293 eos._edges.empty() ||
5294 !eos._sWOL.IsNull() )
5298 for ( size_t i = 0; i < eos._edges.size(); ++i )
5300 _LayerEdge* edge = eos._edges[i];
5301 if ( edge->_nodes.size() < 2 ) continue;
5302 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5303 //SMESH_TNodeXYZ prevXYZ = edge->_nodes[0];
5304 gp_XYZ prevXYZ = edge->PrevCheckPos( &eos );
5305 //const gp_XYZ& prevXYZ = edge->PrevPos();
5306 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5307 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5309 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
5310 << " "<< tgtXYZ._node->GetID()
5311 << " "<< edge->_simplices[j]._nPrev->GetID()
5312 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5313 badEdges.push_back( edge );
5318 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5320 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5326 // Check if the last segments of _LayerEdge intersects 2D elements;
5327 // checked elements are either temporary faces or faces on surfaces w/o the layers
5329 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
5330 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
5331 data._proxyMesh->GetFaces( data._solid )) );
5333 #ifdef BLOCK_INFLATION
5334 const bool toBlockInfaltion = true;
5336 const bool toBlockInfaltion = false;
5338 distToIntersection = Precision::Infinite();
5340 const SMDS_MeshElement* intFace = 0;
5341 const SMDS_MeshElement* closestFace = 0;
5343 bool is1stBlocked = true; // dbg
5344 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5346 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5347 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
5349 for ( size_t i = 0; i < eos._edges.size(); ++i )
5351 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
5352 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
5354 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5357 // commented due to "Illegal hash-positionPosition" error in NETGEN
5358 // on Debian60 on viscous_layers_01/B2 case
5359 // Collision; try to deflate _LayerEdge's causing it
5360 // badEdges.clear();
5361 // badEdges.push_back( eos._edges[i] );
5362 // eosC1[0] = & eos;
5363 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5367 // badEdges.clear();
5368 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5370 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5372 // const SMDS_MeshElement* srcFace =
5373 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
5374 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5375 // while ( nIt->more() )
5377 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5378 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5379 // if ( n2e != data._n2eMap.end() )
5380 // badEdges.push_back( n2e->second );
5383 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5388 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5395 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
5400 const bool isShorterDist = ( distToIntersection > dist );
5401 if ( toBlockInfaltion || isShorterDist )
5403 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
5404 // lying on this _ConvexFace
5405 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
5406 if ( convFace->_isTooCurved && convFace->_subIdToEOS.count ( eos._shapeID ))
5409 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
5410 // ( avoid limiting the thickness on the case of issue 22576)
5411 if ( intFace->getshapeId() == eos._shapeID )
5414 // ignore intersection with intFace of an adjacent FACE
5415 if ( dist > 0.01 * eos._edges[i]->_len )
5417 bool toIgnore = false;
5418 if ( eos._toSmooth )
5420 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
5421 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
5423 TopExp_Explorer sub( eos._shape,
5424 eos.ShapeType() == TopAbs_FACE ? TopAbs_EDGE : TopAbs_VERTEX );
5425 for ( ; !toIgnore && sub.More(); sub.Next() )
5426 // is adjacent - has a common EDGE or VERTEX
5427 toIgnore = ( helper.IsSubShape( sub.Current(), S ));
5429 if ( toIgnore ) // check angle between normals
5432 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
5433 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
5437 if ( !toIgnore ) // check if the edge is a neighbor of intFace
5439 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
5441 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
5442 toIgnore = ( nInd >= 0 );
5449 // intersection not ignored
5451 if ( toBlockInfaltion &&
5452 dist < ( eos._edges[i]->_len * theThickToIntersection ))
5454 if ( is1stBlocked ) { is1stBlocked = false; // debug
5455 dumpFunction(SMESH_Comment("blockIntersected") <<data._index<<"_InfStep"<<infStep);
5457 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
5458 eos._edges[i]->Block( data ); // not to inflate
5460 //if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5462 // block _LayerEdge's, on top of which intFace is
5463 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5465 const SMDS_MeshElement* srcFace = f->_srcFace;
5466 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5467 while ( nIt->more() )
5469 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5470 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5471 if ( n2e != data._n2eMap.end() )
5472 n2e->second->Block( data );
5478 if ( isShorterDist )
5480 distToIntersection = dist;
5482 closestFace = intFace;
5485 } // if ( toBlockInfaltion || isShorterDist )
5486 } // loop on eos._edges
5487 } // loop on data._edgesOnShape
5489 if ( !is1stBlocked )
5494 if ( closestFace && le )
5497 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
5498 cout << "#Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
5499 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
5500 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
5501 << ") distance = " << distToIntersection<< endl;
5508 //================================================================================
5510 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5511 * \param [in,out] badSmooEdges - _LayerEdge's to fix
5512 * \return int - resulting nb of bad _LayerEdge's
5514 //================================================================================
5516 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
5517 SMESH_MesherHelper& helper,
5518 vector< _LayerEdge* >& badSmooEdges,
5519 vector< _EdgesOnShape* >& eosC1,
5522 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
5524 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
5527 INVALIDATED = _LayerEdge::UNUSED_FLAG,
5528 TO_INVALIDATE = _LayerEdge::UNUSED_FLAG * 2,
5529 ADDED = _LayerEdge::UNUSED_FLAG * 4
5531 data.UnmarkEdges( TO_INVALIDATE & INVALIDATED & ADDED );
5534 bool haveInvalidated = true;
5535 while ( haveInvalidated )
5537 haveInvalidated = false;
5538 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5540 _LayerEdge* edge = badSmooEdges[i];
5541 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5543 bool invalidated = false;
5544 if ( edge->Is( TO_INVALIDATE ) && edge->NbSteps() > 1 )
5546 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5547 edge->Block( data );
5548 edge->Set( INVALIDATED );
5549 edge->Unset( TO_INVALIDATE );
5551 haveInvalidated = true;
5554 // look for _LayerEdge's of bad _simplices
5556 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5557 gp_XYZ prevXYZ1 = edge->PrevCheckPos( eos );
5558 //const gp_XYZ& prevXYZ2 = edge->PrevPos();
5559 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5561 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol ))/* &&
5562 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5566 _LayerEdge* ee[2] = { 0,0 };
5567 for ( size_t iN = 0; iN < edge->_neibors.size() && !ee[1] ; ++iN )
5568 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
5569 ee[ ee[0] != 0 ] = edge->_neibors[iN];
5571 int maxNbSteps = Max( ee[0]->NbSteps(), ee[1]->NbSteps() );
5572 while ( maxNbSteps > edge->NbSteps() && isBad )
5575 for ( int iE = 0; iE < 2; ++iE )
5577 if ( ee[ iE ]->NbSteps() > maxNbSteps &&
5578 ee[ iE ]->NbSteps() > 1 )
5580 _EdgesOnShape* eos = data.GetShapeEdges( ee[ iE ] );
5581 ee[ iE ]->InvalidateStep( ee[ iE ]->NbSteps(), *eos, /*restoreLength=*/true );
5582 ee[ iE ]->Block( data );
5583 ee[ iE ]->Set( INVALIDATED );
5584 haveInvalidated = true;
5587 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) /*&&
5588 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5592 if ( !ee[0]->Is( ADDED )) badSmooEdges.push_back( ee[0] );
5593 if ( !ee[1]->Is( ADDED )) badSmooEdges.push_back( ee[1] );
5594 ee[0]->Set( ADDED );
5595 ee[1]->Set( ADDED );
5598 ee[0]->Set( TO_INVALIDATE );
5599 ee[1]->Set( TO_INVALIDATE );
5603 if ( !invalidated && nbBad > 0 && edge->NbSteps() > 1 )
5605 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5606 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5607 edge->Block( data );
5608 edge->Set( INVALIDATED );
5609 edge->Unset( TO_INVALIDATE );
5610 haveInvalidated = true;
5612 } // loop on badSmooEdges
5613 } // while ( haveInvalidated )
5615 // re-smooth on analytical EDGEs
5616 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5618 _LayerEdge* edge = badSmooEdges[i];
5619 if ( !edge->Is( INVALIDATED )) continue;
5621 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5622 if ( eos->ShapeType() == TopAbs_VERTEX )
5624 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
5625 while ( const TopoDS_Shape* e = eIt->next() )
5626 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
5627 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
5629 // TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
5630 // if ( eoe->SWOLType() == TopAbs_FACE ) {
5631 // F = TopoDS::Face( eoe->_sWOL );
5632 // surface = helper.GetSurface( F );
5634 // eoe->_edgeSmoother->Perform( data, surface, F, helper );
5635 eoe->_edgeSmoother->_anaCurve.Nullify();
5641 // check result of invalidation
5644 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5646 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5648 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5649 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5650 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5651 gp_XYZ prevXYZ = edge->PrevCheckPos( eosC1[ iEOS ]);
5652 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5653 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5656 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
5657 << " "<< tgtXYZ._node->GetID()
5658 << " "<< edge->_simplices[j]._nPrev->GetID()
5659 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5668 //================================================================================
5670 * \brief Create an offset surface
5672 //================================================================================
5674 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
5676 if ( eos._offsetSurf.IsNull() ||
5677 eos._edgeForOffset == 0 ||
5678 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5681 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
5684 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
5685 /*gp_Pnt2d uv=*/baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
5686 eos._offsetValue = baseSurface->Gap();
5688 eos._offsetSurf.Nullify();
5692 BRepOffsetAPI_MakeOffsetShape offsetMaker;
5693 offsetMaker.PerformByJoin( eos._shape, -eos._offsetValue, Precision::Confusion() );
5694 if ( !offsetMaker.IsDone() ) return;
5696 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
5697 if ( !fExp.More() ) return;
5699 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5700 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5701 if ( surf.IsNull() ) return;
5703 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5705 catch ( Standard_Failure& )
5710 //================================================================================
5712 * \brief Put nodes of a curved FACE to its offset surface
5714 //================================================================================
5716 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5718 vector< _EdgesOnShape* >& eosC1,
5722 _EdgesOnShape * eof = & eos;
5723 if ( eos.ShapeType() != TopAbs_FACE ) // eos is a boundary of C1 FACE, look for the FACE eos
5726 for ( size_t i = 0; i < eosC1.size() && !eof; ++i )
5728 if ( eosC1[i]->_offsetSurf.IsNull() ||
5729 eosC1[i]->ShapeType() != TopAbs_FACE ||
5730 eosC1[i]->_edgeForOffset == 0 ||
5731 eosC1[i]->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5733 if ( SMESH_MesherHelper::IsSubShape( eos._shape, eosC1[i]->_shape ))
5738 eof->_offsetSurf.IsNull() ||
5739 eof->ShapeType() != TopAbs_FACE ||
5740 eof->_edgeForOffset == 0 ||
5741 eof->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5744 double preci = BRep_Tool::Tolerance( TopoDS::Face( eof->_shape )), vol;
5745 bool neighborHasRiskySWOL = false;
5746 for ( size_t i = 0; i < eos._edges.size(); ++i )
5748 _LayerEdge* edge = eos._edges[i];
5749 edge->Unset( _LayerEdge::MARKED );
5750 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5752 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5754 if ( !edge->Is( _LayerEdge::UPD_NORMAL_CONV ))
5757 else if ( moveAll == _LayerEdge::RISKY_SWOL )
5759 if ( !edge->Is( _LayerEdge::RISKY_SWOL ) ||
5763 else if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5766 int nbBlockedAround = 0;
5767 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5769 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5770 if ( edge->_neibors[iN]->Is( _LayerEdge::RISKY_SWOL ) &&
5771 edge->_neibors[iN]->_cosin > 0 )
5772 neighborHasRiskySWOL = true;
5774 if ( nbBlockedAround > 1 )
5777 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5778 gp_Pnt2d uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5779 if ( eof->_offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5780 edge->_curvature->_uv = uv;
5781 if ( eof->_offsetSurf->Gap() < 10 * preci ) continue; // same pos
5783 gp_XYZ newP = eof->_offsetSurf->Value( uv ).XYZ();
5784 gp_XYZ prevP = edge->PrevCheckPos();
5787 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5789 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5793 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5794 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5795 edge->_pos.back() = newP;
5797 edge->Set( _LayerEdge::MARKED );
5798 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5800 edge->_normal = ( newP - prevP ).Normalized();
5802 // if ( edge->_len < eof->_offsetValue )
5803 // edge->_len = eof->_offsetValue;
5805 if ( !eos._sWOL.IsNull() ) // RISKY_SWOL
5807 double change = eof->_offsetSurf->Gap() / eof->_offsetValue;
5808 if (( newP - tgtP.XYZ() ) * edge->_normal < 0 )
5809 change = 1 - change;
5811 change = 1 + change;
5812 gp_XYZ shitfVec = tgtP.XYZ() - SMESH_NodeXYZ( edge->_nodes[0] );
5813 gp_XYZ newShiftVec = shitfVec * change;
5814 double shift = edge->_normal * shitfVec;
5815 double newShift = edge->_normal * newShiftVec;
5816 newP = tgtP.XYZ() + edge->_normal * ( newShift - shift );
5818 uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, newP, preci );
5819 if ( eof->_offsetSurf->Gap() < edge->_len )
5821 edge->_curvature->_uv = uv;
5822 newP = eof->_offsetSurf->Value( uv ).XYZ();
5824 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5825 if ( !edge->UpdatePositionOnSWOL( n, /*tol=*/10 * edge->_len / ( edge->NbSteps() + 1 ),
5826 eos, eos.GetData().GetHelper() ))
5828 debugMsg("UpdatePositionOnSWOL fails in putOnOffsetSurface()" );
5837 // dumpMove() for debug
5839 for ( ; i < eos._edges.size(); ++i )
5840 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5842 if ( i < eos._edges.size() )
5844 dumpFunction(SMESH_Comment("putOnOffsetSurface_") << eos.ShapeTypeLetter() << eos._shapeID
5845 << "_InfStep" << infStep << "_" << Abs( smooStep ));
5846 for ( ; i < eos._edges.size(); ++i )
5848 if ( eos._edges[i]->Is( _LayerEdge::MARKED )) {
5849 dumpMove( eos._edges[i]->_nodes.back() );
5856 _ConvexFace* cnvFace;
5857 if ( moveAll != _LayerEdge::UPD_NORMAL_CONV &&
5858 eos.ShapeType() == TopAbs_FACE &&
5859 (cnvFace = eos.GetData().GetConvexFace( eos._shapeID )) &&
5860 !cnvFace->_normalsFixedOnBorders )
5862 // put on the surface nodes built on FACE boundaries
5863 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5864 while ( smIt->more() )
5866 SMESH_subMesh* sm = smIt->next();
5867 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5868 if ( !subEOS->_sWOL.IsNull() ) continue;
5869 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5871 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::UPD_NORMAL_CONV );
5873 cnvFace->_normalsFixedOnBorders = true;
5878 // negative smooStep means "final step", where we don't treat RISKY_SWOL edges
5879 // as edges based on FACE are a bit late comparing with them
5880 if ( smooStep >= 0 &&
5881 neighborHasRiskySWOL &&
5882 moveAll != _LayerEdge::RISKY_SWOL &&
5883 eos.ShapeType() == TopAbs_FACE )
5885 // put on the surface nodes built on FACE boundaries
5886 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5887 while ( smIt->more() )
5889 SMESH_subMesh* sm = smIt->next();
5890 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5891 if ( subEOS->_sWOL.IsNull() ) continue;
5892 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5894 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::RISKY_SWOL );
5899 //================================================================================
5901 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5902 * _LayerEdge's to be in a consequent order
5904 //================================================================================
5906 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5908 SMESH_MesherHelper& helper)
5910 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5912 TopLoc_Location loc; double f,l;
5914 Handle(Geom_Line) line;
5915 Handle(Geom_Circle) circle;
5916 bool isLine, isCirc;
5917 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5919 // check if the EDGE is a line
5920 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5921 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5922 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5924 line = Handle(Geom_Line)::DownCast( curve );
5925 circle = Handle(Geom_Circle)::DownCast( curve );
5926 isLine = (!line.IsNull());
5927 isCirc = (!circle.IsNull());
5929 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5931 isLine = SMESH_Algo::IsStraight( E );
5934 line = new Geom_Line( gp::OX() ); // only type does matter
5936 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5941 else //////////////////////////////////////////////////////////////////////// 2D case
5943 if ( !eos._isRegularSWOL ) // 23190
5946 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5948 // check if the EDGE is a line
5949 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5950 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5951 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5953 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5954 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5955 isLine = (!line2d.IsNull());
5956 isCirc = (!circle2d.IsNull());
5958 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5961 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5962 while ( nIt->more() )
5963 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5964 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5966 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5967 for ( int i = 0; i < 2 && !isLine; ++i )
5968 isLine = ( size.Coord( i+1 ) <= lineTol );
5970 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5976 line = new Geom_Line( gp::OX() ); // only type does matter
5980 gp_Pnt2d p = circle2d->Location();
5981 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
5982 circle = new Geom_Circle( ax, 1.); // only center position does matter
5991 return Handle(Geom_Curve)();
5994 //================================================================================
5996 * \brief Smooth edges on EDGE
5998 //================================================================================
6000 bool _Smoother1D::Perform(_SolidData& data,
6001 Handle(ShapeAnalysis_Surface)& surface,
6002 const TopoDS_Face& F,
6003 SMESH_MesherHelper& helper )
6005 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
6008 findEdgesToSmooth();
6010 return smoothAnalyticEdge( data, surface, F, helper );
6012 return smoothComplexEdge ( data, surface, F, helper );
6015 //================================================================================
6017 * \brief Find edges to smooth
6019 //================================================================================
6021 void _Smoother1D::findEdgesToSmooth()
6023 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6024 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6025 if ( leOnV[iEnd]->Is( _LayerEdge::NORMAL_UPDATED ))
6026 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6028 _eToSmooth[0].first = _eToSmooth[0].second = 0;
6030 for ( size_t i = 0; i < _eos.size(); ++i )
6032 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6034 if ( needSmoothing( _leOnV[0]._cosin,
6035 _eos[i]->_len * leOnV[0]->_lenFactor, _curveLen * _leParams[i] ) ||
6038 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6042 _eToSmooth[0].second = i+1;
6045 _eToSmooth[1].first = _eToSmooth[1].second = _eos.size();
6047 for ( int i = _eos.size() - 1; i >= _eToSmooth[0].second; --i )
6049 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6051 if ( needSmoothing( _leOnV[1]._cosin,
6052 _eos[i]->_len * leOnV[1]->_lenFactor, _curveLen * ( 1.-_leParams[i] )) ||
6054 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6058 _eToSmooth[1].first = i;
6062 //================================================================================
6064 * \brief Check if iE-th _LayerEdge needs smoothing
6066 //================================================================================
6068 bool _Smoother1D::isToSmooth( int iE )
6070 SMESH_NodeXYZ pi( _eos[iE]->_nodes[0] );
6071 SMESH_NodeXYZ p0( _eos[iE]->_2neibors->srcNode(0) );
6072 SMESH_NodeXYZ p1( _eos[iE]->_2neibors->srcNode(1) );
6073 gp_XYZ seg0 = pi - p0;
6074 gp_XYZ seg1 = p1 - pi;
6075 gp_XYZ tangent = seg0 + seg1;
6076 double tangentLen = tangent.Modulus();
6077 double segMinLen = Min( seg0.Modulus(), seg1.Modulus() );
6078 if ( tangentLen < std::numeric_limits<double>::min() )
6080 tangent /= tangentLen;
6082 for ( size_t i = 0; i < _eos[iE]->_neibors.size(); ++i )
6084 _LayerEdge* ne = _eos[iE]->_neibors[i];
6085 if ( !ne->Is( _LayerEdge::TO_SMOOTH ) ||
6086 ne->_nodes.size() < 2 ||
6087 ne->_nodes[0]->GetPosition()->GetDim() != 2 )
6089 gp_XYZ edgeVec = SMESH_NodeXYZ( ne->_nodes.back() ) - SMESH_NodeXYZ( ne->_nodes[0] );
6090 double proj = edgeVec * tangent;
6091 if ( needSmoothing( 1., proj, segMinLen ))
6097 //================================================================================
6099 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
6101 //================================================================================
6103 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
6104 Handle(ShapeAnalysis_Surface)& surface,
6105 const TopoDS_Face& F,
6106 SMESH_MesherHelper& helper)
6108 if ( !isAnalytic() ) return false;
6110 size_t iFrom = 0, iTo = _eos._edges.size();
6112 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
6114 if ( F.IsNull() ) // 3D
6116 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
6117 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
6118 //const gp_XYZ lineDir = pSrc1 - pSrc0;
6119 //_LayerEdge* vLE0 = getLEdgeOnV( 0 );
6120 //_LayerEdge* vLE1 = getLEdgeOnV( 1 );
6121 // bool shiftOnly = ( vLE0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6122 // vLE0->Is( _LayerEdge::BLOCKED ) ||
6123 // vLE1->Is( _LayerEdge::NORMAL_UPDATED ) ||
6124 // vLE1->Is( _LayerEdge::BLOCKED ));
6125 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6127 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6128 if ( iFrom >= iTo ) continue;
6129 SMESH_TNodeXYZ p0( _eos[iFrom]->_2neibors->tgtNode(0) );
6130 SMESH_TNodeXYZ p1( _eos[iTo-1]->_2neibors->tgtNode(1) );
6131 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6132 double param1 = _leParams[ iTo ];
6133 for ( size_t i = iFrom; i < iTo; ++i )
6135 _LayerEdge* edge = _eos[i];
6136 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
6137 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6138 gp_XYZ newPos = p0 * ( 1. - param ) + p1 * param;
6140 // if ( shiftOnly || edge->Is( _LayerEdge::NORMAL_UPDATED ))
6142 // gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
6143 // double shift = ( lineDir * ( newPos - pSrc0 ) -
6144 // lineDir * ( curPos - pSrc0 ));
6145 // newPos = curPos + lineDir * shift / lineDir.SquareModulus();
6147 if ( edge->Is( _LayerEdge::BLOCKED ))
6149 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
6150 double curThick = pSrc.SquareDistance( tgtNode );
6151 double newThink = ( pSrc - newPos ).SquareModulus();
6152 if ( newThink > curThick )
6155 edge->_pos.back() = newPos;
6156 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6157 dumpMove( tgtNode );
6163 _LayerEdge* eV0 = getLEdgeOnV( 0 );
6164 _LayerEdge* eV1 = getLEdgeOnV( 1 );
6165 gp_XY uvV0 = eV0->LastUV( F, *data.GetShapeEdges( eV0 ));
6166 gp_XY uvV1 = eV1->LastUV( F, *data.GetShapeEdges( eV1 ));
6167 if ( eV0->_nodes.back() == eV1->_nodes.back() ) // closed edge
6169 int iPeriodic = helper.GetPeriodicIndex();
6170 if ( iPeriodic == 1 || iPeriodic == 2 )
6172 uvV1.SetCoord( iPeriodic, helper.GetOtherParam( uvV1.Coord( iPeriodic )));
6173 if ( uvV0.Coord( iPeriodic ) > uvV1.Coord( iPeriodic ))
6174 std::swap( uvV0, uvV1 );
6177 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6179 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6180 if ( iFrom >= iTo ) continue;
6181 _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0];
6182 _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1];
6183 gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos );
6184 gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos );
6185 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6186 double param1 = _leParams[ iTo ];
6187 gp_XY rangeUV = uv1 - uv0;
6188 for ( size_t i = iFrom; i < iTo; ++i )
6190 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6191 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6192 gp_XY newUV = uv0 + param * rangeUV;
6194 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6195 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6196 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6197 dumpMove( tgtNode );
6199 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6201 pos->SetUParameter( newUV.X() );
6202 pos->SetVParameter( newUV.Y() );
6205 gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 );
6207 if ( !_eos[i]->Is( _LayerEdge::SMOOTHED ))
6209 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6210 if ( _eos[i]->_pos.size() > 2 )
6212 // modify previous positions to make _LayerEdge less sharply bent
6213 vector<gp_XYZ>& uvVec = _eos[i]->_pos;
6214 const gp_XYZ uvShift = newUV0 - uvVec.back();
6215 const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus();
6216 int iPrev = uvVec.size() - 2;
6219 double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2;
6220 uvVec[ iPrev ] += uvShift * r;
6225 _eos[i]->_pos.back() = newUV0;
6232 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
6234 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
6235 gp_Pnt center3D = circle->Location();
6237 if ( F.IsNull() ) // 3D
6239 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
6240 return true; // closed EDGE - nothing to do
6242 // circle is a real curve of EDGE
6243 gp_Circ circ = circle->Circ();
6245 // new center is shifted along its axis
6246 const gp_Dir& axis = circ.Axis().Direction();
6247 _LayerEdge* e0 = getLEdgeOnV(0);
6248 _LayerEdge* e1 = getLEdgeOnV(1);
6249 SMESH_TNodeXYZ p0 = e0->_nodes.back();
6250 SMESH_TNodeXYZ p1 = e1->_nodes.back();
6251 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
6252 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
6253 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
6255 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
6257 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
6258 gp_Circ newCirc( newAxis, newRadius );
6259 gp_Vec vecC1 ( newCenter, p1 );
6261 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
6265 for ( size_t i = 0; i < _eos.size(); ++i )
6267 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6268 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6269 double u = uLast * _leParams[i];
6270 gp_Pnt p = ElCLib::Value( u, newCirc );
6271 _eos._edges[i]->_pos.back() = p.XYZ();
6273 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6274 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6275 dumpMove( tgtNode );
6281 const gp_XY center( center3D.X(), center3D.Y() );
6283 _LayerEdge* e0 = getLEdgeOnV(0);
6284 _LayerEdge* eM = _eos._edges[ 0 ];
6285 _LayerEdge* e1 = getLEdgeOnV(1);
6286 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
6287 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
6288 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
6289 gp_Vec2d vec0( center, uv0 );
6290 gp_Vec2d vecM( center, uvM );
6291 gp_Vec2d vec1( center, uv1 );
6292 double uLast = vec0.Angle( vec1 ); // -PI - +PI
6293 double uMidl = vec0.Angle( vecM );
6294 if ( uLast * uMidl <= 0. )
6295 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
6296 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
6298 gp_Ax2d axis( center, vec0 );
6299 gp_Circ2d circ( axis, radius );
6300 for ( size_t i = 0; i < _eos.size(); ++i )
6302 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6303 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6304 double newU = uLast * _leParams[i];
6305 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
6306 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
6308 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6309 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6310 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6311 dumpMove( tgtNode );
6313 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6315 pos->SetUParameter( newUV.X() );
6316 pos->SetVParameter( newUV.Y() );
6318 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6327 //================================================================================
6329 * \brief smooth _LayerEdge's on a an EDGE
6331 //================================================================================
6333 bool _Smoother1D::smoothComplexEdge( _SolidData& /*data*/,
6334 Handle(ShapeAnalysis_Surface)& surface,
6335 const TopoDS_Face& F,
6336 SMESH_MesherHelper& /*helper*/)
6338 if ( _offPoints.empty() )
6341 // ----------------------------------------------
6342 // move _offPoints along normals of _LayerEdge's
6343 // ----------------------------------------------
6345 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6346 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED ))
6347 _leOnV[0]._normal = getNormalNormal( e[0]->_normal, _edgeDir[0] );
6348 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED ))
6349 _leOnV[1]._normal = getNormalNormal( e[1]->_normal, _edgeDir[1] );
6350 _leOnV[0]._len = e[0]->_len;
6351 _leOnV[1]._len = e[1]->_len;
6352 for ( size_t i = 0; i < _offPoints.size(); i++ )
6354 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6355 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6356 const double w0 = _offPoints[i]._2edges._wgt[0];
6357 const double w1 = _offPoints[i]._2edges._wgt[1];
6358 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
6359 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6360 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
6361 if ( e0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6362 e1->Is( _LayerEdge::NORMAL_UPDATED ))
6363 avgNorm = getNormalNormal( avgNorm, _offPoints[i]._edgeDir );
6365 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
6366 _offPoints[i]._len = avgLen;
6370 if ( !surface.IsNull() ) // project _offPoints to the FACE
6372 fTol = 100 * BRep_Tool::Tolerance( F );
6373 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
6375 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
6376 //if ( surface->Gap() < 0.5 * segLen )
6377 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
6379 for ( size_t i = 1; i < _offPoints.size(); ++i )
6381 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
6382 //if ( surface->Gap() < 0.5 * segLen )
6383 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
6387 // -----------------------------------------------------------------
6388 // project tgt nodes of extreme _LayerEdge's to the offset segments
6389 // -----------------------------------------------------------------
6391 const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED;
6392 if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0;
6393 if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2;
6395 gp_Pnt pExtreme[2], pProj[2];
6396 bool isProjected[2];
6397 for ( int is2nd = 0; is2nd < 2; ++is2nd )
6399 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
6400 int i = _iSeg[ is2nd ];
6401 int di = is2nd ? -1 : +1;
6402 bool & projected = isProjected[ is2nd ];
6404 double uOnSeg, distMin = Precision::Infinite(), dist, distPrev = 0;
6407 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
6408 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
6409 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude(); // param [0,1] along v01
6410 projected = ( Abs( uOnSeg - 0.5 ) <= 0.5 );
6411 dist = pExtreme[ is2nd ].SquareDistance( _offPoints[ i + ( uOnSeg > 0.5 )]._xyz );
6412 if ( dist < distMin || projected )
6415 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
6418 else if ( dist > distPrev )
6420 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
6426 while ( !projected &&
6427 i >= 0 && i+1 < (int)_offPoints.size() );
6431 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
6434 _iSeg[1] = _offPoints.size()-2;
6435 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
6440 if ( _iSeg[0] > _iSeg[1] )
6442 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
6446 // adjust length of extreme LE (test viscous_layers_01/B7)
6447 gp_Vec vDiv0( pExtreme[0], pProj[0] );
6448 gp_Vec vDiv1( pExtreme[1], pProj[1] );
6449 double d0 = vDiv0.Magnitude();
6450 double d1 = isProjected[1] ? vDiv1.Magnitude() : 0;
6451 if ( e[0]->Is( _LayerEdge::BLOCKED )) {
6452 if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0;
6453 else e[0]->_len -= d0;
6455 if ( e[1]->Is( _LayerEdge::BLOCKED )) {
6456 if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1;
6457 else e[1]->_len -= d1;
6460 // ---------------------------------------------------------------------------------
6461 // compute normalized length of the offset segments located between the projections
6462 // ---------------------------------------------------------------------------------
6464 // temporary replace extreme _offPoints by pExtreme
6465 gp_XYZ opXYZ[2] = { _offPoints[ _iSeg[0] ]._xyz,
6466 _offPoints[ _iSeg[1]+1 ]._xyz };
6467 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
6468 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
6470 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
6471 vector< double > len( nbSeg + 1 );
6473 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
6474 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
6476 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
6478 // if ( isProjected[ 1 ])
6479 // len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6481 // len[ nbSeg ] += pExtreme[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6483 double fullLen = len.back() - d0 - d1;
6484 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
6485 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
6487 // -------------------------------------------------------------
6488 // distribute tgt nodes of _LayerEdge's between the projections
6489 // -------------------------------------------------------------
6492 for ( size_t i = 0; i < _eos.size(); ++i )
6494 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6495 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6496 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
6498 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
6499 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
6500 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
6502 if ( surface.IsNull() )
6504 _eos[i]->_pos.back() = p;
6506 else // project a new node position to a FACE
6508 gp_Pnt2d uv ( _eos[i]->_pos.back().X(), _eos[i]->_pos.back().Y() );
6509 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
6511 p = surface->Value( uv2 ).XYZ();
6512 _eos[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
6514 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6515 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6516 dumpMove( tgtNode );
6519 _offPoints[ _iSeg[0] ]._xyz = opXYZ[0];
6520 _offPoints[ _iSeg[1]+1 ]._xyz = opXYZ[1];
6525 //================================================================================
6527 * \brief Prepare for smoothing
6529 //================================================================================
6531 void _Smoother1D::prepare(_SolidData& data)
6533 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
6534 _curveLen = SMESH_Algo::EdgeLength( E );
6536 // sort _LayerEdge's by position on the EDGE
6537 data.SortOnEdge( E, _eos._edges );
6539 // compute normalized param of _eos._edges on EDGE
6540 _leParams.resize( _eos._edges.size() + 1 );
6543 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
6545 for ( size_t i = 0; i < _eos._edges.size(); ++i )
6547 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
6548 curLen = p.Distance( pPrev );
6549 _leParams[i+1] = _leParams[i] + curLen;
6552 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
6553 for ( size_t i = 0; i < _leParams.size()-1; ++i )
6554 _leParams[i] = _leParams[i+1] / fullLen;
6555 _leParams.back() = 1.;
6558 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6560 // get cosin to use in findEdgesToSmooth()
6561 _edgeDir[0] = getEdgeDir( E, leOnV[0]->_nodes[0], data.GetHelper() );
6562 _edgeDir[1] = getEdgeDir( E, leOnV[1]->_nodes[0], data.GetHelper() );
6563 _leOnV[0]._cosin = Abs( leOnV[0]->_cosin );
6564 _leOnV[1]._cosin = Abs( leOnV[1]->_cosin );
6565 if ( _eos._sWOL.IsNull() ) // 3D
6566 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6567 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6572 // divide E to have offset segments with low deflection
6573 BRepAdaptor_Curve c3dAdaptor( E );
6574 const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2|*sin(p1p2,p1pM)
6575 const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2)
6576 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
6577 if ( discret.NbPoints() <= 2 )
6579 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
6583 const double u0 = c3dAdaptor.FirstParameter();
6584 gp_Pnt p; gp_Vec tangent;
6585 if ( discret.NbPoints() >= (int) _eos.size() + 2 )
6587 _offPoints.resize( discret.NbPoints() );
6588 for ( size_t i = 0; i < _offPoints.size(); i++ )
6590 double u = discret.Parameter( i+1 );
6591 c3dAdaptor.D1( u, p, tangent );
6592 _offPoints[i]._xyz = p.XYZ();
6593 _offPoints[i]._edgeDir = tangent.XYZ();
6594 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6599 std::vector< double > params( _eos.size() + 2 );
6601 params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] );
6602 params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] );
6603 for ( size_t i = 0; i < _eos.size(); i++ )
6604 params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] );
6606 if ( params[1] > params[ _eos.size() ] )
6607 std::reverse( params.begin() + 1, params.end() - 1 );
6609 _offPoints.resize( _eos.size() + 2 );
6610 for ( size_t i = 0; i < _offPoints.size(); i++ )
6612 const double u = params[i];
6613 c3dAdaptor.D1( u, p, tangent );
6614 _offPoints[i]._xyz = p.XYZ();
6615 _offPoints[i]._edgeDir = tangent.XYZ();
6616 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6621 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
6622 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
6623 _2NearEdges tmp2edges;
6624 tmp2edges._edges[1] = _eos._edges[0];
6625 _leOnV[0]._2neibors = & tmp2edges;
6626 _leOnV[0]._nodes = leOnV[0]->_nodes;
6627 _leOnV[1]._nodes = leOnV[1]->_nodes;
6628 _LayerEdge* eNext, *ePrev = & _leOnV[0];
6629 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
6631 // find _LayerEdge's located before and after an offset point
6632 // (_eos._edges[ iLE ] is next after ePrev)
6633 while ( iLE < _eos._edges.size() && _offPoints[i]._param > _leParams[ iLE ] )
6634 ePrev = _eos._edges[ iLE++ ];
6635 eNext = ePrev->_2neibors->_edges[1];
6637 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
6638 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
6639 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
6640 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
6643 // replace _LayerEdge's on VERTEX by _leOnV in _offPoints._2edges
6644 for ( size_t i = 0; i < _offPoints.size(); i++ )
6645 if ( _offPoints[i]._2edges._edges[0] == leOnV[0] )
6646 _offPoints[i]._2edges._edges[0] = & _leOnV[0];
6648 for ( size_t i = _offPoints.size()-1; i > 0; i-- )
6649 if ( _offPoints[i]._2edges._edges[1] == leOnV[1] )
6650 _offPoints[i]._2edges._edges[1] = & _leOnV[1];
6653 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
6655 int iLBO = _offPoints.size() - 2; // last but one
6657 if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL ))
6658 _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] );
6660 _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] );
6661 if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL ))
6662 _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] );
6664 _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] );
6665 _leOnV[ 0 ]._len = 0;
6666 _leOnV[ 1 ]._len = 0;
6667 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
6668 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
6671 _iSeg[1] = _offPoints.size()-2;
6673 // initialize OffPnt::_len
6674 for ( size_t i = 0; i < _offPoints.size(); ++i )
6675 _offPoints[i]._len = 0;
6677 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
6679 _leOnV[0]._len = leOnV[0]->_len;
6680 _leOnV[1]._len = leOnV[1]->_len;
6681 for ( size_t i = 0; i < _offPoints.size(); i++ )
6683 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6684 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6685 const double w0 = _offPoints[i]._2edges._wgt[0];
6686 const double w1 = _offPoints[i]._2edges._wgt[1];
6687 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6688 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
6689 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
6690 _offPoints[i]._xyz = avgXYZ;
6691 _offPoints[i]._len = avgLen;
6696 //================================================================================
6698 * \brief return _normal of _leOnV[is2nd] normal to the EDGE
6700 //================================================================================
6702 gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal,
6703 const gp_XYZ& edgeDir)
6705 gp_XYZ cross = normal ^ edgeDir;
6706 gp_XYZ norm = edgeDir ^ cross;
6707 double size = norm.Modulus();
6709 // if ( size == 0 ) // MULTI_NORMAL _LayerEdge
6710 // return gp_XYZ( 1e-100, 1e-100, 1e-100 );
6712 if ( size < 1e-5 ) // normal || edgeDir (almost) at inflation along EDGE (bos #20643)
6714 const _LayerEdge* le = _eos._edges[ _eos._edges.size() / 2 ];
6715 const gp_XYZ& leNorm = le->_normal;
6717 cross = leNorm ^ edgeDir;
6718 norm = edgeDir ^ cross;
6719 size = norm.Modulus();
6725 //================================================================================
6727 * \brief Writes a script creating a mesh composed of _offPoints
6729 //================================================================================
6731 void _Smoother1D::offPointsToPython() const
6733 const char* fname = "/tmp/offPoints.py";
6734 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
6736 py << "import SMESH" << endl
6737 << "from salome.smesh import smeshBuilder" << endl
6738 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
6739 << "mesh = smesh.Mesh( 'offPoints' )"<<endl;
6740 for ( size_t i = 0; i < _offPoints.size(); i++ )
6742 py << "mesh.AddNode( "
6743 << _offPoints[i]._xyz.X() << ", "
6744 << _offPoints[i]._xyz.Y() << ", "
6745 << _offPoints[i]._xyz.Z() << " )" << endl;
6749 //================================================================================
6751 * \brief Sort _LayerEdge's by a parameter on a given EDGE
6753 //================================================================================
6755 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
6756 vector< _LayerEdge* >& edges)
6758 map< double, _LayerEdge* > u2edge;
6759 for ( size_t i = 0; i < edges.size(); ++i )
6760 u2edge.insert( u2edge.end(),
6761 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
6763 ASSERT( u2edge.size() == edges.size() );
6764 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
6765 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
6766 edges[i] = u2e->second;
6768 Sort2NeiborsOnEdge( edges );
6771 //================================================================================
6773 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
6775 //================================================================================
6777 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
6779 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
6781 for ( size_t i = 0; i < edges.size()-1; ++i )
6782 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
6783 edges[i]->_2neibors->reverse();
6785 const size_t iLast = edges.size() - 1;
6786 if ( edges.size() > 1 &&
6787 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
6788 edges[iLast]->_2neibors->reverse();
6791 //================================================================================
6793 * \brief Return _EdgesOnShape* corresponding to the shape
6795 //================================================================================
6797 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
6799 if ( shapeID < (int)_edgesOnShape.size() &&
6800 _edgesOnShape[ shapeID ]._shapeID == shapeID )
6801 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
6803 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
6804 if ( _edgesOnShape[i]._shapeID == shapeID )
6805 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
6810 //================================================================================
6812 * \brief Return _EdgesOnShape* corresponding to the shape
6814 //================================================================================
6816 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
6818 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
6819 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
6822 //================================================================================
6824 * \brief Prepare data of the _LayerEdge for smoothing on FACE
6826 //================================================================================
6828 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
6830 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
6832 set< TGeomID > vertices;
6834 if ( eos->ShapeType() == TopAbs_FACE )
6836 // check FACE concavity and get concave VERTEXes
6837 F = TopoDS::Face( eos->_shape );
6838 if ( isConcave( F, helper, &vertices ))
6839 _concaveFaces.insert( eos->_shapeID );
6841 // set eos._eosConcaVer
6842 eos->_eosConcaVer.clear();
6843 eos->_eosConcaVer.reserve( vertices.size() );
6844 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
6846 _EdgesOnShape* eov = GetShapeEdges( *v );
6847 if ( eov && eov->_edges.size() == 1 )
6849 eos->_eosConcaVer.push_back( eov );
6850 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
6851 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
6855 // SetSmooLen() to _LayerEdge's on FACE
6856 // for ( size_t i = 0; i < eos->_edges.size(); ++i )
6858 // eos->_edges[i]->SetSmooLen( Precision::Infinite() );
6860 // SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6861 // while ( smIt->more() ) // loop on sub-shapes of the FACE
6863 // _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
6864 // if ( !eoe ) continue;
6866 // vector<_LayerEdge*>& eE = eoe->_edges;
6867 // for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
6869 // if ( eE[iE]->_cosin <= theMinSmoothCosin )
6872 // SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
6873 // while ( segIt->more() )
6875 // const SMDS_MeshElement* seg = segIt->next();
6876 // if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
6878 // if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
6879 // continue; // not to check a seg twice
6880 // for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
6882 // _LayerEdge* eN = eE[iE]->_neibors[iN];
6883 // if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
6885 // double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
6886 // double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
6887 // eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
6888 // eN->Set( _LayerEdge::NEAR_BOUNDARY );
6893 } // if ( eos->ShapeType() == TopAbs_FACE )
6895 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6897 eos->_edges[i]->_smooFunction = 0;
6898 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
6900 bool isCurved = false;
6901 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6903 _LayerEdge* edge = eos->_edges[i];
6905 // get simplices sorted
6906 _Simplex::SortSimplices( edge->_simplices );
6908 // smoothing function
6909 edge->ChooseSmooFunction( vertices, _n2eMap );
6912 double avgNormProj = 0, avgLen = 0;
6913 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
6915 _Simplex& s = edge->_simplices[iS];
6917 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
6918 avgNormProj += edge->_normal * vec;
6919 avgLen += vec.Modulus();
6920 if ( substituteSrcNodes )
6922 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
6923 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
6926 avgNormProj /= edge->_simplices.size();
6927 avgLen /= edge->_simplices.size();
6928 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
6930 edge->Set( _LayerEdge::SMOOTHED_C1 );
6932 SMDS_FacePositionPtr fPos = edge->_nodes[0]->GetPosition();
6934 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
6935 fPos = edge->_simplices[iS]._nPrev->GetPosition();
6937 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
6941 // prepare for putOnOffsetSurface()
6942 if (( eos->ShapeType() == TopAbs_FACE ) &&
6943 ( isCurved || !eos->_eosConcaVer.empty() ))
6945 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
6946 eos->_edgeForOffset = 0;
6948 double maxCosin = -1;
6949 //bool hasNoShrink = false;
6950 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
6952 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
6953 if ( !eoe || eoe->_edges.empty() ) continue;
6955 // if ( eos->GetData()._noShrinkShapes.count( eoe->_shapeID ))
6956 // hasNoShrink = true;
6958 vector<_LayerEdge*>& eE = eoe->_edges;
6959 _LayerEdge* e = eE[ eE.size() / 2 ];
6960 if ( !e->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > maxCosin )
6962 eos->_edgeForOffset = e;
6963 maxCosin = e->_cosin;
6966 if ( !eoe->_sWOL.IsNull() )
6967 for ( _LayerEdge* le : eoe->_edges )
6968 if ( le->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > 0 )
6970 // make _neibors on FACE be smoothed after le->Is( BLOCKED )
6971 for ( _LayerEdge* neibor : le->_neibors )
6973 int shapeDim = neibor->BaseShapeDim();
6974 if ( shapeDim == 2 )
6975 neibor->Set( _LayerEdge::NEAR_BOUNDARY ); // on FACE
6976 else if ( shapeDim == 0 )
6977 neibor->Set( _LayerEdge::RISKY_SWOL ); // on VERTEX
6979 if ( !neibor->_curvature )
6981 gp_XY uv = helper.GetNodeUV( F, neibor->_nodes[0] );
6982 neibor->_curvature = _Factory::NewCurvature();
6983 neibor->_curvature->_r = 0;
6984 neibor->_curvature->_k = 0;
6985 neibor->_curvature->_h2lenRatio = 0;
6986 neibor->_curvature->_uv = uv;
6992 // Try to initialize _Mapper2D
6994 // if ( hasNoShrink )
6997 SMDS_ElemIteratorPtr fIt = eos->_subMesh->GetSubMeshDS()->GetElements();
6998 if ( !fIt->more() || fIt->next()->NbCornerNodes() != 4 )
7001 // get EDGEs of quadrangle bottom
7002 std::list< TopoDS_Edge > edges;
7003 std::list< int > nbEdgesInWire;
7004 int nbWire = SMESH_Block::GetOrderedEdges( F, edges, nbEdgesInWire );
7005 if ( nbWire != 1 || nbEdgesInWire.front() < 4 )
7007 const SMDS_MeshNode* node;
7008 while ( true ) // make edges start at a corner VERTEX
7010 node = SMESH_Algo::VertexNode( helper.IthVertex( 0, edges.front() ), helper.GetMeshDS() );
7011 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7014 if ( edges.empty() )
7017 std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
7018 while ( true ) // make edges finish at a corner VERTEX
7020 node = SMESH_Algo::VertexNode( helper.IthVertex( 1, *edgeIt ), helper.GetMeshDS() );
7022 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7024 edges.erase( edgeIt, edges.end() );
7027 if ( edgeIt == edges.end() )
7031 // get structure of nodes
7032 TParam2ColumnMap param2ColumnMap;
7033 if ( !helper.LoadNodeColumns( param2ColumnMap, F, edges, helper.GetMeshDS() ))
7036 eos->_mapper2D = new _Mapper2D( param2ColumnMap, eos->GetData()._n2eMap );
7038 } // if eos is of curved FACE
7043 //================================================================================
7045 * \brief Add faces for smoothing
7047 //================================================================================
7049 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
7050 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
7052 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
7053 for ( ; eos != eosToSmooth.end(); ++eos )
7055 if ( !*eos || (*eos)->_toSmooth ) continue;
7057 (*eos)->_toSmooth = true;
7059 if ( (*eos)->ShapeType() == TopAbs_FACE )
7061 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
7062 (*eos)->_toSmooth = true;
7066 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
7067 if ( edgesNoAnaSmooth )
7068 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
7070 if ( (*eos)->_edgeSmoother )
7071 (*eos)->_edgeSmoother->_anaCurve.Nullify();
7075 //================================================================================
7077 * \brief Limit _LayerEdge::_maxLen according to local curvature
7079 //================================================================================
7081 void _ViscousBuilder::limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& /*helper*/ )
7083 // find intersection of neighbor _LayerEdge's to limit _maxLen
7084 // according to local curvature (IPAL52648)
7086 // This method must be called after findCollisionEdges() where _LayerEdge's
7087 // get _lenFactor initialized in the case of eos._hyp.IsOffsetMethod()
7089 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7091 _EdgesOnShape& eosI = data._edgesOnShape[iS];
7092 if ( eosI._edges.empty() ) continue;
7093 if ( !eosI._hyp.ToSmooth() )
7095 for ( size_t i = 0; i < eosI._edges.size(); ++i )
7097 _LayerEdge* eI = eosI._edges[i];
7098 for ( size_t iN = 0; iN < eI->_neibors.size(); ++iN )
7100 _LayerEdge* eN = eI->_neibors[iN];
7101 if ( eI->_nodes[0]->GetID() < eN->_nodes[0]->GetID() ) // treat this pair once
7103 _EdgesOnShape* eosN = data.GetShapeEdges( eN );
7104 limitMaxLenByCurvature( eI, eN, eosI, *eosN, eosI._hyp.ToSmooth() );
7109 else if ( eosI.ShapeType() == TopAbs_EDGE )
7111 const TopoDS_Edge& E = TopoDS::Edge( eosI._shape );
7112 if ( SMESH_Algo::IsStraight( E, /*degenResult=*/true )) continue;
7114 _LayerEdge* e0 = eosI._edges[0];
7115 for ( size_t i = 1; i < eosI._edges.size(); ++i )
7117 _LayerEdge* eI = eosI._edges[i];
7118 limitMaxLenByCurvature( eI, e0, eosI, eosI, eosI._hyp.ToSmooth() );
7125 //================================================================================
7127 * \brief Limit _LayerEdge::_maxLen according to local curvature
7129 //================================================================================
7131 void _ViscousBuilder::limitMaxLenByCurvature( _LayerEdge* e1,
7133 _EdgesOnShape& /*eos1*/,
7134 _EdgesOnShape& /*eos2*/,
7135 const bool /*isSmoothable*/ )
7137 if (( e1->_nodes[0]->GetPosition()->GetDim() !=
7138 e2->_nodes[0]->GetPosition()->GetDim() ) &&
7139 ( e1->_cosin < 0.75 ))
7140 return; // angle > 90 deg at e1
7142 gp_XYZ plnNorm = e1->_normal ^ e2->_normal;
7143 double norSize = plnNorm.SquareModulus();
7144 if ( norSize < std::numeric_limits<double>::min() )
7145 return; // parallel normals
7147 // find closest points of skew _LayerEdge's
7148 SMESH_TNodeXYZ src1( e1->_nodes[0] ), src2( e2->_nodes[0] );
7149 gp_XYZ dir12 = src2 - src1;
7150 gp_XYZ perp1 = e1->_normal ^ plnNorm;
7151 gp_XYZ perp2 = e2->_normal ^ plnNorm;
7152 double dot1 = perp2 * e1->_normal;
7153 double dot2 = perp1 * e2->_normal;
7154 double u1 = ( perp2 * dir12 ) / dot1;
7155 double u2 = - ( perp1 * dir12 ) / dot2;
7156 if ( u1 > 0 && u2 > 0 )
7158 double ovl = ( u1 * e1->_normal * dir12 -
7159 u2 * e2->_normal * dir12 ) / dir12.SquareModulus();
7160 if ( ovl > theSmoothThickToElemSizeRatio )
7162 const double coef = 0.75;
7163 e1->SetMaxLen( Min( e1->_maxLen, coef * u1 / e1->_lenFactor ));
7164 e2->SetMaxLen( Min( e2->_maxLen, coef * u2 / e2->_lenFactor ));
7169 //================================================================================
7171 * \brief Fill data._collisionEdges
7173 //================================================================================
7175 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
7177 data._collisionEdges.clear();
7179 // set the full thickness of the layers to LEs
7180 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7182 _EdgesOnShape& eos = data._edgesOnShape[iS];
7183 if ( eos._edges.empty() ) continue;
7184 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7185 if ( !eos._sWOL.IsNull() ) continue; // PAL23566
7187 for ( size_t i = 0; i < eos._edges.size(); ++i )
7189 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
7190 double maxLen = eos._edges[i]->_maxLen;
7191 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
7192 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
7193 eos._edges[i]->_maxLen = maxLen;
7197 // make temporary quadrangles got by extrusion of
7198 // mesh edges along _LayerEdge._normal's
7200 vector< const SMDS_MeshElement* > tmpFaces;
7202 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7204 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7205 if ( eos.ShapeType() != TopAbs_EDGE )
7207 if ( eos._edges.empty() )
7209 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
7210 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
7211 while ( smIt->more() )
7212 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
7213 if ( eov->_edges.size() == 1 )
7214 edge[ bool( edge[0]) ] = eov->_edges[0];
7218 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
7219 tmpFaces.push_back( f );
7222 for ( size_t i = 0; i < eos._edges.size(); ++i )
7224 _LayerEdge* edge = eos._edges[i];
7225 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
7227 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
7228 if ( src2->GetPosition()->GetDim() > 0 &&
7229 src2->GetID() < edge->_nodes[0]->GetID() )
7230 continue; // avoid using same segment twice
7232 // a _LayerEdge containing tgt2
7233 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
7235 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
7236 tmpFaces.push_back( f );
7241 // Find _LayerEdge's intersecting tmpFaces.
7243 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
7245 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
7246 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
7248 double dist1, dist2, segLen, eps = 0.5;
7249 _CollisionEdges collEdges;
7250 vector< const SMDS_MeshElement* > suspectFaces;
7251 const double angle45 = Cos( 45. * M_PI / 180. );
7253 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7255 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7256 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
7258 // find sub-shapes whose VL can influence VL on eos
7259 set< TGeomID > neighborShapes;
7260 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
7261 while ( const TopoDS_Shape* face = fIt->next() )
7263 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
7264 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
7266 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
7267 while ( subIt->more() )
7268 neighborShapes.insert( subIt->next()->GetId() );
7271 if ( eos.ShapeType() == TopAbs_VERTEX )
7273 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
7274 while ( const TopoDS_Shape* edge = eIt->next() )
7275 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
7277 // find intersecting _LayerEdge's
7278 for ( size_t i = 0; i < eos._edges.size(); ++i )
7280 if ( eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL )) continue;
7281 _LayerEdge* edge = eos._edges[i];
7282 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
7285 gp_Vec eSegDir0, eSegDir1;
7286 if ( edge->IsOnEdge() )
7288 SMESH_TNodeXYZ eP( edge->_nodes[0] );
7289 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
7290 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
7292 suspectFaces.clear();
7293 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len * 2,
7294 SMDSAbs_Face, suspectFaces );
7295 collEdges._intEdges.clear();
7296 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
7298 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
7299 if ( f->_le1 == edge || f->_le2 == edge ) continue;
7300 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
7301 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
7302 if ( edge->IsOnEdge() ) {
7303 if ( edge->_2neibors->include( f->_le1 ) ||
7304 edge->_2neibors->include( f->_le2 )) continue;
7307 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
7308 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
7310 dist1 = dist2 = Precision::Infinite();
7311 if ( !edge->SegTriaInter( lastSegment, f->n(0), f->n(1), f->n(2), dist1, eps ))
7312 dist1 = Precision::Infinite();
7313 if ( !edge->SegTriaInter( lastSegment, f->n(3), f->n(2), f->n(0), dist2, eps ))
7314 dist2 = Precision::Infinite();
7315 if (( dist1 > segLen ) && ( dist2 > segLen ))
7318 if ( edge->IsOnEdge() )
7320 // skip perpendicular EDGEs
7321 gp_Vec fSegDir = SMESH_TNodeXYZ( f->n(0) ) - SMESH_TNodeXYZ( f->n(3) );
7322 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle45 ) ||
7323 isLessAngle( eSegDir1, fSegDir, angle45 ) ||
7324 isLessAngle( eSegDir0, fSegDir.Reversed(), angle45 ) ||
7325 isLessAngle( eSegDir1, fSegDir.Reversed(), angle45 ));
7330 // either limit inflation of edges or remember them for updating _normal
7331 // double dot = edge->_normal * f->GetDir();
7334 collEdges._intEdges.push_back( f->_le1 );
7335 collEdges._intEdges.push_back( f->_le2 );
7339 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
7340 // edge->SetMaxLen( Min( shortLen, edge->_maxLen ));
7344 if ( !collEdges._intEdges.empty() )
7346 collEdges._edge = edge;
7347 data._collisionEdges.push_back( collEdges );
7352 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
7355 // restore the zero thickness
7356 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7358 _EdgesOnShape& eos = data._edgesOnShape[iS];
7359 if ( eos._edges.empty() ) continue;
7360 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7362 for ( size_t i = 0; i < eos._edges.size(); ++i )
7364 eos._edges[i]->InvalidateStep( 1, eos );
7365 eos._edges[i]->_len = 0;
7370 //================================================================================
7372 * \brief Find _LayerEdge's located on boundary of a convex FACE whose normal
7373 * will be updated at each inflation step
7375 //================================================================================
7377 void _ViscousBuilder::findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
7379 SMESH_MesherHelper& helper )
7381 const TGeomID convFaceID = getMeshDS()->ShapeToIndex( convFace._face );
7382 const double preci = BRep_Tool::Tolerance( convFace._face );
7383 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( convFace._face );
7385 bool edgesToUpdateFound = false;
7387 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7388 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7390 _EdgesOnShape& eos = * id2eos->second;
7391 if ( !eos._sWOL.IsNull() ) continue;
7392 if ( !eos._hyp.ToSmooth() ) continue;
7393 for ( size_t i = 0; i < eos._edges.size(); ++i )
7395 _LayerEdge* ledge = eos._edges[ i ];
7396 if ( ledge->Is( _LayerEdge::UPD_NORMAL_CONV )) continue; // already checked
7397 if ( ledge->Is( _LayerEdge::MULTI_NORMAL )) continue; // not inflatable
7399 gp_XYZ tgtPos = ( SMESH_NodeXYZ( ledge->_nodes[0] ) +
7400 ledge->_normal * ledge->_lenFactor * ledge->_maxLen );
7402 // the normal must be updated if distance from tgtPos to surface is less than
7405 // find an initial UV for search of a projection of tgtPos to surface
7406 const SMDS_MeshNode* nodeInFace = 0;
7407 SMDS_ElemIteratorPtr fIt = ledge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7408 while ( fIt->more() && !nodeInFace )
7410 const SMDS_MeshElement* f = fIt->next();
7411 if ( convFaceID != f->getshapeId() ) continue;
7413 SMDS_ElemIteratorPtr nIt = f->nodesIterator();
7414 while ( nIt->more() && !nodeInFace )
7416 const SMDS_MeshElement* n = nIt->next();
7417 if ( n->getshapeId() == convFaceID )
7418 nodeInFace = static_cast< const SMDS_MeshNode* >( n );
7423 gp_XY uv = helper.GetNodeUV( convFace._face, nodeInFace );
7426 surface->NextValueOfUV( uv, tgtPos, preci );
7427 double dist = surface->Gap();
7428 if ( dist < 0.95 * ledge->_maxLen )
7430 ledge->Set( _LayerEdge::UPD_NORMAL_CONV );
7431 if ( !ledge->_curvature ) ledge->_curvature = _Factory::NewCurvature();
7432 ledge->_curvature->_uv.SetCoord( uv.X(), uv.Y() );
7433 edgesToUpdateFound = true;
7438 if ( !convFace._isTooCurved && edgesToUpdateFound )
7440 data._convexFaces.insert( make_pair( convFaceID, convFace )).first->second;
7444 //================================================================================
7446 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
7447 * _LayerEdge's on neighbor EDGE's
7449 //================================================================================
7451 bool _ViscousBuilder::updateNormals( _SolidData& data,
7452 SMESH_MesherHelper& helper,
7454 double /*stepSize*/)
7456 updateNormalsOfC1Vertices( data );
7458 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
7461 // map to store new _normal and _cosin for each intersected edge
7462 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
7463 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
7464 _LayerEdge zeroEdge;
7465 zeroEdge._normal.SetCoord( 0,0,0 );
7466 zeroEdge._maxLen = Precision::Infinite();
7467 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
7469 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
7471 double segLen, dist1, dist2, dist;
7472 vector< pair< _LayerEdge*, double > > intEdgesDist;
7473 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
7475 for ( int iter = 0; iter < 5; ++iter )
7477 edge2newEdge.clear();
7479 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
7481 _CollisionEdges& ce = data._collisionEdges[iE];
7482 _LayerEdge* edge1 = ce._edge;
7483 if ( !edge1 /*|| edge1->Is( _LayerEdge::BLOCKED )*/) continue;
7484 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7485 if ( !eos1 ) continue;
7487 // detect intersections
7488 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
7489 double testLen = 1.5 * edge1->_maxLen * edge1->_lenFactor;
7491 intEdgesDist.clear();
7492 double minIntDist = Precision::Infinite();
7493 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
7495 if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7496 ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) &&
7497 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
7499 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
7500 double fact = ( 1.1 + dot * dot );
7501 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
7502 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
7503 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
7504 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
7505 dist1 = dist2 = Precision::Infinite();
7506 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pLast0, pSrc1, dist1, eps ) &&
7507 !edge1->SegTriaInter( lastSeg, pSrc1, pLast1, pLast0, dist2, eps ))
7510 if ( dist > testLen || dist <= 0 )
7513 if ( dist > testLen || dist <= 0 )
7516 // choose a closest edge
7517 gp_Pnt intP( lastSeg.Location().XYZ() + lastSeg.Direction().XYZ() * ( dist + segLen ));
7518 double d1 = intP.SquareDistance( pSrc0 );
7519 double d2 = intP.SquareDistance( pSrc1 );
7520 int iClose = i + ( d2 < d1 );
7521 _LayerEdge* edge2 = ce._intEdges[iClose];
7522 edge2->Unset( _LayerEdge::MARKED );
7524 // choose a closest edge among neighbors
7525 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
7526 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
7527 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
7529 _LayerEdge * edgeJ = intEdgesDist[j].first;
7530 if ( edge2->IsNeiborOnEdge( edgeJ ))
7532 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
7533 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
7536 intEdgesDist.push_back( make_pair( edge2, dist ));
7537 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
7539 // iClose = i + !( d2 < d1 );
7540 // intEdges.push_back( ce._intEdges[iClose] );
7541 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
7543 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist, minIntDist );
7548 // compute new _normals
7549 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
7551 _LayerEdge* edge2 = intEdgesDist[i].first;
7552 double distWgt = edge1->_len / intEdgesDist[i].second;
7553 // if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7554 // edge2->Is( _LayerEdge::BLOCKED )) continue;
7555 if ( edge2->Is( _LayerEdge::MARKED )) continue;
7556 edge2->Set( _LayerEdge::MARKED );
7559 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
7561 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7562 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7563 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7564 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7565 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
7566 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7567 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7568 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
7569 newNormal.Normalize();
7573 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
7574 if ( cos1 < theMinSmoothCosin )
7576 newCos = cos2 * sgn1;
7578 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
7580 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
7584 newCos = edge1->_cosin;
7587 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
7588 e2neIt->second._normal += distWgt * newNormal;
7589 e2neIt->second._cosin = newCos;
7590 e2neIt->second.SetMaxLen( 0.7 * minIntDist / edge1->_lenFactor );
7591 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
7592 e2neIt->second._normal += dir2;
7594 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
7595 e2neIt->second._normal += distWgt * newNormal;
7596 if ( Precision::IsInfinite( zeroEdge._maxLen ))
7598 e2neIt->second._cosin = edge2->_cosin;
7599 e2neIt->second.SetMaxLen( 1.3 * minIntDist / edge1->_lenFactor );
7601 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
7602 e2neIt->second._normal += dir1;
7606 if ( edge2newEdge.empty() )
7607 break; //return true;
7609 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
7611 // Update data of edges depending on a new _normal
7614 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7616 _LayerEdge* edge = e2neIt->first;
7617 _LayerEdge& newEdge = e2neIt->second;
7618 _EdgesOnShape* eos = data.GetShapeEdges( edge );
7619 if ( edge->Is( _LayerEdge::BLOCKED ) && newEdge._maxLen > edge->_len )
7622 // Check if a new _normal is OK:
7623 newEdge._normal.Normalize();
7624 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
7626 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
7628 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7629 edge->SetMaxLen( newEdge._maxLen );
7630 edge->SetNewLength( newEdge._maxLen, *eos, helper );
7632 continue; // the new _normal is bad
7634 // the new _normal is OK
7636 // find shapes that need smoothing due to change of _normal
7637 if ( edge->_cosin < theMinSmoothCosin &&
7638 newEdge._cosin > theMinSmoothCosin )
7640 if ( eos->_sWOL.IsNull() )
7642 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7643 while ( fIt->more() )
7644 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
7646 else // edge inflates along a FACE
7648 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
7649 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE, &eos->_sWOL );
7650 while ( const TopoDS_Shape* E = eIt->next() )
7652 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ),
7653 eos->_hyp.Get1stLayerThickness() );
7654 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
7655 if ( angle < M_PI / 2 )
7656 shapesToSmooth.insert( data.GetShapeEdges( *E ));
7661 double len = edge->_len;
7662 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7663 edge->SetNormal( newEdge._normal );
7664 edge->SetCosin( newEdge._cosin );
7665 edge->SetNewLength( len, *eos, helper );
7666 edge->Set( _LayerEdge::MARKED );
7667 edge->Set( _LayerEdge::NORMAL_UPDATED );
7668 edgesNoAnaSmooth.insert( eos );
7671 // Update normals and other dependent data of not intersecting _LayerEdge's
7672 // neighboring the intersecting ones
7674 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7676 _LayerEdge* edge1 = e2neIt->first;
7677 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7678 if ( !edge1->Is( _LayerEdge::MARKED ))
7681 if ( edge1->IsOnEdge() )
7683 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
7684 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
7685 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
7688 if ( !edge1->_2neibors || !eos1->_sWOL.IsNull() )
7690 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
7692 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
7693 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
7694 continue; // j-th neighbor is also intersected
7695 _LayerEdge* prevEdge = edge1;
7696 const int nbSteps = 10;
7697 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
7699 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
7700 neighbor->Is( _LayerEdge::MARKED ))
7702 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
7703 if ( !eos ) continue;
7704 _LayerEdge* nextEdge = neighbor;
7705 if ( neighbor->_2neibors )
7708 nextEdge = neighbor->_2neibors->_edges[iNext];
7709 if ( nextEdge == prevEdge )
7710 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
7712 double r = double(step-1)/nbSteps/(iter+1);
7713 if ( !nextEdge->_2neibors )
7716 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
7717 newNorm.Normalize();
7718 if ( !isNewNormalOk( data, *neighbor, newNorm ))
7721 double len = neighbor->_len;
7722 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7723 neighbor->SetNormal( newNorm );
7724 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
7725 if ( neighbor->_2neibors )
7726 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
7727 neighbor->SetNewLength( len, *eos, helper );
7728 neighbor->Set( _LayerEdge::MARKED );
7729 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
7730 edgesNoAnaSmooth.insert( eos );
7732 if ( !neighbor->_2neibors )
7733 break; // neighbor is on VERTEX
7735 // goto the next neighbor
7736 prevEdge = neighbor;
7737 neighbor = nextEdge;
7744 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
7749 //================================================================================
7751 * \brief Check if a new normal is OK
7753 //================================================================================
7755 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
7757 const gp_XYZ& newNormal)
7759 // check a min angle between the newNormal and surrounding faces
7760 vector<_Simplex> simplices;
7761 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
7762 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
7763 double newMinDot = 1, curMinDot = 1;
7764 for ( size_t i = 0; i < simplices.size(); ++i )
7766 n1.Set( simplices[i]._nPrev );
7767 n2.Set( simplices[i]._nNext );
7768 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
7769 double normLen2 = normFace.SquareModulus();
7770 if ( normLen2 < std::numeric_limits<double>::min() )
7772 normFace /= Sqrt( normLen2 );
7773 newMinDot = Min( newNormal * normFace, newMinDot );
7774 curMinDot = Min( edge._normal * normFace, curMinDot );
7777 if ( newMinDot < 0.5 )
7779 ok = ( newMinDot >= curMinDot * 0.9 );
7780 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
7781 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
7782 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
7788 //================================================================================
7790 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
7792 //================================================================================
7794 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
7795 SMESH_MesherHelper& /*helper*/,
7797 const double stepSize )
7799 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
7800 return true; // no shapes needing smoothing
7802 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7804 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7805 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
7806 !eos._hyp.ToSmooth() ||
7807 eos.ShapeType() != TopAbs_FACE ||
7808 eos._edges.empty() )
7811 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
7812 if ( !toSmooth ) continue;
7814 for ( size_t i = 0; i < eos._edges.size(); ++i )
7816 _LayerEdge* edge = eos._edges[i];
7817 if ( !edge->Is( _LayerEdge::SMOOTHED ))
7819 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
7822 const gp_XYZ& pPrev = edge->PrevPos();
7823 const gp_XYZ& pLast = edge->_pos.back();
7824 gp_XYZ stepVec = pLast - pPrev;
7825 double realStepSize = stepVec.Modulus();
7826 if ( realStepSize < numeric_limits<double>::min() )
7829 edge->_lenFactor = realStepSize / stepSize;
7830 edge->_normal = stepVec / realStepSize;
7831 edge->Set( _LayerEdge::NORMAL_UPDATED );
7838 //================================================================================
7840 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
7842 //================================================================================
7844 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
7846 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7848 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
7849 if ( eov._eosC1.empty() ||
7850 eov.ShapeType() != TopAbs_VERTEX ||
7851 eov._edges.empty() )
7854 gp_XYZ newNorm = eov._edges[0]->_normal;
7855 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
7856 bool normChanged = false;
7858 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
7860 _EdgesOnShape* eoe = eov._eosC1[i];
7861 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
7862 const double eLen = SMESH_Algo::EdgeLength( e );
7863 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
7864 if ( oppV.IsSame( eov._shape ))
7865 oppV = SMESH_MesherHelper::IthVertex( 1, e );
7866 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
7867 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
7868 if ( eov._edges[0]->Is( _LayerEdge::BLOCKED )) continue;
7870 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
7871 if ( curThickOpp + curThick < eLen )
7874 double wgt = 2. * curThick / eLen;
7875 newNorm += wgt * eovOpp->_edges[0]->_normal;
7880 eov._edges[0]->SetNormal( newNorm.Normalized() );
7881 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
7886 //================================================================================
7888 * \brief Modify normals of _LayerEdge's on _ConvexFace's
7890 //================================================================================
7892 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
7893 SMESH_MesherHelper& helper,
7896 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
7899 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
7900 for ( ; id2face != data._convexFaces.end(); ++id2face )
7902 _ConvexFace & convFace = (*id2face).second;
7903 convFace._normalsFixedOnBorders = false; // to update at each inflation step
7905 if ( convFace._normalsFixed )
7906 continue; // already fixed
7907 if ( convFace.CheckPrisms() )
7908 continue; // nothing to fix
7910 convFace._normalsFixed = true;
7912 BRepAdaptor_Surface surface ( convFace._face, false );
7913 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
7915 // check if the convex FACE is of spherical shape
7917 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
7921 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7922 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7924 _EdgesOnShape& eos = *(id2eos->second);
7925 if ( eos.ShapeType() == TopAbs_VERTEX )
7927 _LayerEdge* ledge = eos._edges[ 0 ];
7928 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7929 centersBox.Add( center );
7931 for ( size_t i = 0; i < eos._edges.size(); ++i )
7932 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
7934 if ( centersBox.IsVoid() )
7936 debugMsg( "Error: centersBox.IsVoid()" );
7939 const bool isSpherical =
7940 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7942 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
7943 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
7947 // set _LayerEdge::_normal as average of all normals
7949 // WARNING: different density of nodes on EDGEs is not taken into account that
7950 // can lead to an improper new normal
7952 gp_XYZ avgNormal( 0,0,0 );
7954 id2eos = convFace._subIdToEOS.begin();
7955 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7957 _EdgesOnShape& eos = *(id2eos->second);
7958 // set data of _CentralCurveOnEdge
7959 if ( eos.ShapeType() == TopAbs_EDGE )
7961 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
7962 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
7963 if ( !eos._sWOL.IsNull() )
7964 ceCurve._adjFace.Nullify();
7966 ceCurve._ledges.insert( ceCurve._ledges.end(),
7967 eos._edges.begin(), eos._edges.end());
7969 // summarize normals
7970 for ( size_t i = 0; i < eos._edges.size(); ++i )
7971 avgNormal += eos._edges[ i ]->_normal;
7973 double normSize = avgNormal.SquareModulus();
7974 if ( normSize < 1e-200 )
7976 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
7979 avgNormal /= Sqrt( normSize );
7981 // compute new _LayerEdge::_cosin on EDGEs
7982 double avgCosin = 0;
7985 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7987 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
7988 if ( ceCurve._adjFace.IsNull() )
7990 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
7992 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
7993 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
7996 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
7997 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
7998 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
8004 avgCosin /= nbCosin;
8006 // set _LayerEdge::_normal = avgNormal
8007 id2eos = convFace._subIdToEOS.begin();
8008 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8010 _EdgesOnShape& eos = *(id2eos->second);
8011 if ( eos.ShapeType() != TopAbs_EDGE )
8012 for ( size_t i = 0; i < eos._edges.size(); ++i )
8013 eos._edges[ i ]->_cosin = avgCosin;
8015 for ( size_t i = 0; i < eos._edges.size(); ++i )
8017 eos._edges[ i ]->SetNormal( avgNormal );
8018 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
8022 else // if ( isSpherical )
8024 // We suppose that centers of curvature at all points of the FACE
8025 // lie on some curve, let's call it "central curve". For all _LayerEdge's
8026 // having a common center of curvature we define the same new normal
8027 // as a sum of normals of _LayerEdge's on EDGEs among them.
8029 // get all centers of curvature for each EDGE
8031 helper.SetSubShape( convFace._face );
8032 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
8034 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
8035 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
8037 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
8039 // set adjacent FACE
8040 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
8042 // get _LayerEdge's of the EDGE
8043 TGeomID edgeID = meshDS->ShapeToIndex( edge );
8044 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
8045 if ( !eos || eos->_edges.empty() )
8047 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
8048 for ( int iV = 0; iV < 2; ++iV )
8050 TopoDS_Vertex v = helper.IthVertex( iV, edge );
8051 TGeomID vID = meshDS->ShapeToIndex( v );
8052 eos = data.GetShapeEdges( vID );
8053 vertexLEdges[ iV ] = eos->_edges[ 0 ];
8055 edgeLEdge = &vertexLEdges[0];
8056 edgeLEdgeEnd = edgeLEdge + 2;
8058 centerCurves[ iE ]._adjFace.Nullify();
8062 if ( ! eos->_toSmooth )
8063 data.SortOnEdge( edge, eos->_edges );
8064 edgeLEdge = &eos->_edges[ 0 ];
8065 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
8066 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
8067 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
8069 if ( ! eos->_sWOL.IsNull() )
8070 centerCurves[ iE ]._adjFace.Nullify();
8073 // Get curvature centers
8077 if ( edgeLEdge[0]->IsOnEdge() &&
8078 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
8080 centerCurves[ iE ].Append( center, vertexLEdges[0] );
8081 centersBox.Add( center );
8083 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
8084 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
8085 { // EDGE or VERTEXes
8086 centerCurves[ iE ].Append( center, *edgeLEdge );
8087 centersBox.Add( center );
8089 if ( edgeLEdge[-1]->IsOnEdge() &&
8090 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
8092 centerCurves[ iE ].Append( center, vertexLEdges[1] );
8093 centersBox.Add( center );
8095 centerCurves[ iE ]._isDegenerated =
8096 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
8098 } // loop on EDGES of convFace._face to set up data of centerCurves
8100 // Compute new normals for _LayerEdge's on EDGEs
8102 double avgCosin = 0;
8105 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
8107 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
8108 if ( ceCurve._isDegenerated )
8110 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
8111 vector< gp_XYZ > & newNormals = ceCurve._normals;
8112 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
8115 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
8118 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
8120 if ( isOK && !ceCurve._adjFace.IsNull() )
8122 // compute new _LayerEdge::_cosin
8123 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
8124 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8127 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
8128 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
8129 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
8135 // set new normals to _LayerEdge's of NOT degenerated central curves
8136 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8138 if ( centerCurves[ iE ]._isDegenerated )
8140 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8142 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
8143 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8146 // set new normals to _LayerEdge's of degenerated central curves
8147 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8149 if ( !centerCurves[ iE ]._isDegenerated ||
8150 centerCurves[ iE ]._ledges.size() < 3 )
8152 // new normal is an average of new normals at VERTEXes that
8153 // was computed on non-degenerated _CentralCurveOnEdge's
8154 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
8155 centerCurves[ iE ]._ledges.back ()->_normal );
8156 double sz = newNorm.Modulus();
8160 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
8161 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
8162 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
8164 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
8165 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
8166 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8170 // Find new normals for _LayerEdge's based on FACE
8173 avgCosin /= nbCosin;
8174 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
8175 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
8176 if ( id2eos != convFace._subIdToEOS.end() )
8180 _EdgesOnShape& eos = * ( id2eos->second );
8181 for ( size_t i = 0; i < eos._edges.size(); ++i )
8183 _LayerEdge* ledge = eos._edges[ i ];
8184 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
8186 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
8188 iE = iE % centerCurves.size();
8189 if ( centerCurves[ iE ]._isDegenerated )
8191 newNorm.SetCoord( 0,0,0 );
8192 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
8194 ledge->SetNormal( newNorm );
8195 ledge->_cosin = avgCosin;
8196 ledge->Set( _LayerEdge::NORMAL_UPDATED );
8203 } // not a quasi-spherical FACE
8205 // Update _LayerEdge's data according to a new normal
8207 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
8208 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
8210 id2eos = convFace._subIdToEOS.begin();
8211 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8213 _EdgesOnShape& eos = * ( id2eos->second );
8214 for ( size_t i = 0; i < eos._edges.size(); ++i )
8216 _LayerEdge* & ledge = eos._edges[ i ];
8217 double len = ledge->_len;
8218 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
8219 ledge->SetCosin( ledge->_cosin );
8220 ledge->SetNewLength( len, eos, helper );
8222 if ( eos.ShapeType() != TopAbs_FACE )
8223 for ( size_t i = 0; i < eos._edges.size(); ++i )
8225 _LayerEdge* ledge = eos._edges[ i ];
8226 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
8228 _LayerEdge* neibor = ledge->_neibors[iN];
8229 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
8231 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
8232 neibor->Set( _LayerEdge::MOVED );
8233 neibor->SetSmooLen( neibor->_len );
8237 } // loop on sub-shapes of convFace._face
8239 // Find FACEs adjacent to convFace._face that got necessity to smooth
8240 // as a result of normals modification
8242 set< _EdgesOnShape* > adjFacesToSmooth;
8243 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8245 if ( centerCurves[ iE ]._adjFace.IsNull() ||
8246 centerCurves[ iE ]._adjFaceToSmooth )
8248 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8250 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
8252 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
8257 data.AddShapesToSmooth( adjFacesToSmooth );
8262 } // loop on data._convexFaces
8267 //================================================================================
8269 * \brief Return max curvature of a FACE
8271 //================================================================================
8273 double _ConvexFace::GetMaxCurvature( _SolidData& data,
8275 BRepLProp_SLProps& surfProp,
8276 SMESH_MesherHelper& helper)
8278 double maxCurvature = 0;
8280 TopoDS_Face F = TopoDS::Face( eof._shape );
8282 const int nbTestPnt = 5;
8283 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8284 SMESH_subMeshIteratorPtr smIt = eof._subMesh->getDependsOnIterator(/*includeSelf=*/true);
8285 while ( smIt->more() )
8287 SMESH_subMesh* sm = smIt->next();
8288 const TGeomID subID = sm->GetId();
8290 // find _LayerEdge's of a sub-shape
8292 if (( eos = data.GetShapeEdges( subID )))
8293 this->_subIdToEOS.insert( make_pair( subID, eos ));
8297 // check concavity and curvature and limit data._stepSize
8298 const double minCurvature =
8299 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
8300 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
8301 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
8303 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
8304 surfProp.SetParameters( uv.X(), uv.Y() );
8305 if ( surfProp.IsCurvatureDefined() )
8307 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
8308 surfProp.MinCurvature() * oriFactor );
8309 maxCurvature = Max( maxCurvature, curvature );
8311 if ( curvature > minCurvature )
8312 this->_isTooCurved = true;
8315 } // loop on sub-shapes of the FACE
8317 return maxCurvature;
8320 //================================================================================
8322 * \brief Finds a center of curvature of a surface at a _LayerEdge
8324 //================================================================================
8326 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
8327 BRepLProp_SLProps& surfProp,
8328 SMESH_MesherHelper& helper,
8329 gp_Pnt & center ) const
8331 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
8332 surfProp.SetParameters( uv.X(), uv.Y() );
8333 if ( !surfProp.IsCurvatureDefined() )
8336 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8337 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
8338 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
8339 if ( surfCurvatureMin > surfCurvatureMax )
8340 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
8342 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
8347 //================================================================================
8349 * \brief Check that prisms are not distorted
8351 //================================================================================
8353 bool _ConvexFace::CheckPrisms() const
8356 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
8358 const _LayerEdge* edge = _simplexTestEdges[i];
8359 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
8360 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
8361 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
8363 debugMsg( "Bad simplex of _simplexTestEdges ("
8364 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
8365 << " "<< edge->_simplices[j]._nPrev->GetID()
8366 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
8373 //================================================================================
8375 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
8376 * stored in this _CentralCurveOnEdge.
8377 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
8378 * \param [in,out] newNormal - current normal at this point, to be redefined
8379 * \return bool - true if succeeded.
8381 //================================================================================
8383 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
8385 if ( this->_isDegenerated )
8388 // find two centers the given one lies between
8390 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
8392 double sl2 = 1.001 * _segLength2[ i ];
8394 double d1 = center.SquareDistance( _curvaCenters[ i ]);
8398 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
8399 if ( d2 > sl2 || d2 + d1 < 1e-100 )
8404 double r = d1 / ( d1 + d2 );
8405 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
8406 ( r ) * _ledges[ i+1 ]->_normal );
8410 double sz = newNormal.Modulus();
8419 //================================================================================
8421 * \brief Set shape members
8423 //================================================================================
8425 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
8426 const _ConvexFace& convFace,
8428 SMESH_MesherHelper& helper)
8432 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
8433 while ( const TopoDS_Shape* F = fIt->next())
8434 if ( !convFace._face.IsSame( *F ))
8436 _adjFace = TopoDS::Face( *F );
8437 _adjFaceToSmooth = false;
8438 // _adjFace already in a smoothing queue ?
8439 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
8440 _adjFaceToSmooth = eos->_toSmooth;
8445 //================================================================================
8447 * \brief Looks for intersection of it's last segment with faces
8448 * \param distance - returns shortest distance from the last node to intersection
8450 //================================================================================
8452 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
8454 const double& epsilon,
8456 const SMDS_MeshElement** intFace)
8458 vector< const SMDS_MeshElement* > suspectFaces;
8460 gp_Ax1 lastSegment = LastSegment( segLen, eos );
8461 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
8463 bool segmentIntersected = false;
8464 distance = Precision::Infinite();
8465 int iFace = -1; // intersected face
8466 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
8468 const SMDS_MeshElement* face = suspectFaces[j];
8469 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
8470 face->GetNodeIndex( _nodes[0] ) >= 0 )
8471 continue; // face sharing _LayerEdge node
8472 const int nbNodes = face->NbCornerNodes();
8473 bool intFound = false;
8475 SMDS_MeshElement::iterator nIt = face->begin_nodes();
8478 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
8482 const SMDS_MeshNode* tria[3];
8485 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
8488 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
8494 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
8495 segmentIntersected = true;
8496 if ( distance > dist )
8497 distance = dist, iFace = j;
8500 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
8504 if ( segmentIntersected )
8507 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
8508 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
8509 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
8510 << ", intersection with face ("
8511 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
8512 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
8513 << ") distance = " << distance << endl;
8517 return segmentIntersected;
8520 //================================================================================
8522 * \brief Returns a point used to check orientation of _simplices
8524 //================================================================================
8526 gp_XYZ _LayerEdge::PrevCheckPos( _EdgesOnShape* eos ) const
8528 size_t i = Is( NORMAL_UPDATED ) && IsOnFace() ? _pos.size()-2 : 0;
8530 if ( !eos || eos->_sWOL.IsNull() )
8533 if ( eos->SWOLType() == TopAbs_EDGE )
8535 return BRepAdaptor_Curve( TopoDS::Edge( eos->_sWOL )).Value( _pos[i].X() ).XYZ();
8537 //else // TopAbs_FACE
8539 return BRepAdaptor_Surface( TopoDS::Face( eos->_sWOL )).Value(_pos[i].X(), _pos[i].Y() ).XYZ();
8542 //================================================================================
8544 * \brief Returns size and direction of the last segment
8546 //================================================================================
8548 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
8550 // find two non-coincident positions
8551 gp_XYZ orig = _pos.back();
8553 int iPrev = _pos.size() - 2;
8554 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
8555 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
8556 while ( iPrev >= 0 )
8558 vec = orig - _pos[iPrev];
8559 if ( vec.SquareModulus() > tol*tol )
8569 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
8570 segDir.SetDirection( _normal );
8575 gp_Pnt pPrev = _pos[ iPrev ];
8576 if ( !eos._sWOL.IsNull() )
8578 TopLoc_Location loc;
8579 if ( eos.SWOLType() == TopAbs_EDGE )
8582 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8583 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
8587 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
8588 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
8590 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
8592 segDir.SetLocation( pPrev );
8593 segDir.SetDirection( vec );
8594 segLen = vec.Modulus();
8600 //================================================================================
8602 * \brief Return the last (or \a which) position of the target node on a FACE.
8603 * \param [in] F - the FACE this _LayerEdge is inflated along
8604 * \param [in] which - index of position
8605 * \return gp_XY - result UV
8607 //================================================================================
8609 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which ) const
8611 if ( F.IsSame( eos._sWOL )) // F is my FACE
8612 return gp_XY( _pos.back().X(), _pos.back().Y() );
8614 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
8615 return gp_XY( 1e100, 1e100 );
8617 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
8618 double f, l, u = _pos[ which < 0 ? _pos.size()-1 : which ].X();
8619 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
8620 if ( !C2d.IsNull() && f <= u && u <= l )
8621 return C2d->Value( u ).XY();
8623 return gp_XY( 1e100, 1e100 );
8626 //================================================================================
8628 * \brief Test intersection of the last segment with a given triangle
8629 * using Moller-Trumbore algorithm
8630 * Intersection is detected if distance to intersection is less than _LayerEdge._len
8632 //================================================================================
8634 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
8635 const gp_XYZ& vert0,
8636 const gp_XYZ& vert1,
8637 const gp_XYZ& vert2,
8639 const double& EPSILON) const
8641 const gp_Pnt& orig = lastSegment.Location();
8642 const gp_Dir& dir = lastSegment.Direction();
8644 /* calculate distance from vert0 to ray origin */
8645 //gp_XYZ tvec = orig.XYZ() - vert0;
8647 //if ( tvec * dir > EPSILON )
8648 // intersected face is at back side of the temporary face this _LayerEdge belongs to
8651 gp_XYZ edge1 = vert1 - vert0;
8652 gp_XYZ edge2 = vert2 - vert0;
8654 /* begin calculating determinant - also used to calculate U parameter */
8655 gp_XYZ pvec = dir.XYZ() ^ edge2;
8657 /* if determinant is near zero, ray lies in plane of triangle */
8658 double det = edge1 * pvec;
8660 const double ANGL_EPSILON = 1e-12;
8661 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
8664 /* calculate distance from vert0 to ray origin */
8665 gp_XYZ tvec = orig.XYZ() - vert0;
8667 /* calculate U parameter and test bounds */
8668 double u = ( tvec * pvec ) / det;
8669 //if (u < 0.0 || u > 1.0)
8670 if ( u < -EPSILON || u > 1.0 + EPSILON )
8673 /* prepare to test V parameter */
8674 gp_XYZ qvec = tvec ^ edge1;
8676 /* calculate V parameter and test bounds */
8677 double v = (dir.XYZ() * qvec) / det;
8678 //if ( v < 0.0 || u + v > 1.0 )
8679 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
8682 /* calculate t, ray intersects triangle */
8683 t = (edge2 * qvec) / det;
8689 //================================================================================
8691 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
8692 * neighbor _LayerEdge's by it's own inflation vector.
8693 * \param [in] eov - EOS of the VERTEX
8694 * \param [in] eos - EOS of the FACE
8695 * \param [in] step - inflation step
8696 * \param [in,out] badSmooEdges - tangled _LayerEdge's
8698 //================================================================================
8700 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
8701 const _EdgesOnShape* eos,
8703 vector< _LayerEdge* > & badSmooEdges )
8705 // check if any of _neibors is in badSmooEdges
8706 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
8707 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
8710 // get all edges to move
8712 set< _LayerEdge* > edges;
8714 // find a distance between _LayerEdge on VERTEX and its neighbors
8715 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
8717 for ( size_t i = 0; i < _neibors.size(); ++i )
8719 _LayerEdge* nEdge = _neibors[i];
8720 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
8722 edges.insert( nEdge );
8723 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
8726 // add _LayerEdge's close to curPosV
8730 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8732 _LayerEdge* edgeF = *e;
8733 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
8735 _LayerEdge* nEdge = edgeF->_neibors[i];
8736 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
8737 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
8738 edges.insert( nEdge );
8742 while ( nbE < edges.size() );
8744 // move the target node of the got edges
8746 gp_XYZ prevPosV = PrevPos();
8747 if ( eov->SWOLType() == TopAbs_EDGE )
8749 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
8750 prevPosV = curve.Value( prevPosV.X() ).XYZ();
8752 else if ( eov->SWOLType() == TopAbs_FACE )
8754 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
8755 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
8758 SMDS_FacePositionPtr fPos;
8759 //double r = 1. - Min( 0.9, step / 10. );
8760 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8762 _LayerEdge* edgeF = *e;
8763 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
8764 const gp_XYZ newPosF = curPosV + prevVF;
8765 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8766 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
8767 edgeF->_pos.back() = newPosF;
8768 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
8770 // set _curvature to make edgeF updated by putOnOffsetSurface()
8771 if ( !edgeF->_curvature )
8772 if (( fPos = edgeF->_nodes[0]->GetPosition() ))
8774 edgeF->_curvature = _Factory::NewCurvature();
8775 edgeF->_curvature->_r = 0;
8776 edgeF->_curvature->_k = 0;
8777 edgeF->_curvature->_h2lenRatio = 0;
8778 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
8781 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
8782 // SMESH_TNodeXYZ( _nodes[0] ));
8783 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8785 // _LayerEdge* edgeF = *e;
8786 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8787 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8788 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8789 // edgeF->_pos.back() = newPosF;
8790 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
8793 // smooth _LayerEdge's around moved nodes
8794 //size_t nbBadBefore = badSmooEdges.size();
8795 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8797 _LayerEdge* edgeF = *e;
8798 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
8799 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
8800 //&& !edges.count( edgeF->_neibors[j] ))
8802 _LayerEdge* edgeFN = edgeF->_neibors[j];
8803 edgeFN->Unset( SMOOTHED );
8804 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
8807 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
8808 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
8809 // int nbBadAfter = edgeFN->_simplices.size();
8811 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
8813 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
8815 // if ( nbBadAfter <= nbBad )
8817 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
8818 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8819 // edgeF->_pos.back() = newPosF;
8820 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8821 // nbBad = nbBadAfter;
8825 badSmooEdges.push_back( edgeFN );
8828 // move a bit not smoothed around moved nodes
8829 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
8831 // _LayerEdge* edgeF = badSmooEdges[i];
8832 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8833 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8834 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
8835 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
8836 // edgeF->_pos.back() = newPosF;
8837 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8841 //================================================================================
8843 * \brief Perform smooth of _LayerEdge's based on EDGE's
8844 * \retval bool - true if node has been moved
8846 //================================================================================
8848 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
8849 const TopoDS_Face& F,
8850 SMESH_MesherHelper& helper)
8852 ASSERT( IsOnEdge() );
8854 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
8855 SMESH_TNodeXYZ oldPos( tgtNode );
8856 double dist01, distNewOld;
8858 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
8859 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
8860 dist01 = p0.Distance( _2neibors->tgtNode(1) );
8862 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
8863 double lenDelta = 0;
8866 //lenDelta = _curvature->lenDelta( _len );
8867 lenDelta = _curvature->lenDeltaByDist( dist01 );
8868 newPos.ChangeCoord() += _normal * lenDelta;
8871 distNewOld = newPos.Distance( oldPos );
8875 if ( _2neibors->_plnNorm )
8877 // put newPos on the plane defined by source node and _plnNorm
8878 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
8879 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
8880 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
8882 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8883 _pos.back() = newPos.XYZ();
8887 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8888 gp_XY uv( Precision::Infinite(), 0 );
8889 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
8890 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8892 newPos = surface->Value( uv );
8893 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8896 // commented for IPAL0052478
8897 // if ( _curvature && lenDelta < 0 )
8899 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
8900 // _len -= prevPos.Distance( oldPos );
8901 // _len += prevPos.Distance( newPos );
8903 bool moved = distNewOld > dist01/50;
8905 dumpMove( tgtNode ); // debug
8910 //================================================================================
8912 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
8914 //================================================================================
8916 void _LayerEdge::SmoothWoCheck()
8918 if ( Is( DIFFICULT ))
8921 bool moved = Is( SMOOTHED );
8922 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
8923 moved = _neibors[i]->Is( SMOOTHED );
8927 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8929 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8930 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8931 _pos.back() = newPos;
8933 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
8936 //================================================================================
8938 * \brief Checks validity of _neibors on EDGEs and VERTEXes
8940 //================================================================================
8942 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
8944 if ( ! Is( NEAR_BOUNDARY ))
8949 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
8951 _LayerEdge* eN = _neibors[iN];
8952 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
8955 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) ||
8956 eN->Is( _LayerEdge::NORMAL_UPDATED ) ||
8957 eN->_pos.size() != _pos.size() );
8959 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
8960 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
8961 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
8962 if ( eN->_nodes.size() > 1 &&
8963 eN->_simplices[i].Includes( _nodes.back() ) &&
8964 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
8969 badNeibors->push_back( eN );
8970 debugMsg("Bad boundary simplex ( "
8971 << " "<< eN->_nodes[0]->GetID()
8972 << " "<< eN->_nodes.back()->GetID()
8973 << " "<< eN->_simplices[i]._nPrev->GetID()
8974 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
8985 //================================================================================
8987 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
8988 * \retval int - nb of bad simplices around this _LayerEdge
8990 //================================================================================
8992 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
8994 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
8995 return 0; // shape of simplices not changed
8996 if ( _simplices.size() < 2 )
8997 return 0; // _LayerEdge inflated along EDGE or FACE
8999 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
9002 const gp_XYZ& curPos = _pos.back();
9003 const gp_XYZ& prevPos = _pos[0]; //PrevPos();
9005 // quality metrics (orientation) of tetras around _tgtNode
9007 double vol, minVolBefore = 1e100;
9008 for ( size_t i = 0; i < _simplices.size(); ++i )
9010 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9011 minVolBefore = Min( minVolBefore, vol );
9013 int nbBad = _simplices.size() - nbOkBefore;
9015 bool bndNeedSmooth = false;
9017 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
9021 // evaluate min angle
9022 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
9024 size_t nbGoodAngles = _simplices.size();
9026 for ( size_t i = 0; i < _simplices.size(); ++i )
9028 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
9031 if ( nbGoodAngles == _simplices.size() )
9037 if ( Is( ON_CONCAVE_FACE ))
9040 if ( step % 2 == 0 )
9043 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9045 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
9046 _smooFunction = _funs[ FUN_CENTROIDAL ];
9048 _smooFunction = _funs[ FUN_LAPLACIAN ];
9051 // compute new position for the last _pos using different _funs
9054 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9057 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9058 else if ( _funs[ iFun ] == _smooFunction )
9059 continue; // _smooFunction again
9060 else if ( step > 1 )
9061 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9063 break; // let "easy" functions improve elements around distorted ones
9067 double delta = _curvature->lenDelta( _len );
9069 newPos += _normal * delta;
9072 double segLen = _normal * ( newPos - prevPos );
9073 if ( segLen + delta > 0 )
9074 newPos += _normal * delta;
9076 // double segLenChange = _normal * ( curPos - newPos );
9077 // newPos += 0.5 * _normal * segLenChange;
9081 double minVolAfter = 1e100;
9082 for ( size_t i = 0; i < _simplices.size(); ++i )
9084 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9085 minVolAfter = Min( minVolAfter, vol );
9088 if ( nbOkAfter < nbOkBefore )
9092 ( nbOkAfter == nbOkBefore ) &&
9093 ( minVolAfter <= minVolBefore ))
9096 nbBad = _simplices.size() - nbOkAfter;
9097 minVolBefore = minVolAfter;
9098 nbOkBefore = nbOkAfter;
9101 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9102 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9103 _pos.back() = newPos;
9105 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9106 << (nbBad ? " --BAD" : ""));
9110 continue; // look for a better function
9116 } // loop on smoothing functions
9118 if ( moved ) // notify _neibors
9121 for ( size_t i = 0; i < _neibors.size(); ++i )
9122 if ( !_neibors[i]->Is( MOVED ))
9124 _neibors[i]->Set( MOVED );
9125 toSmooth.push_back( _neibors[i] );
9132 //================================================================================
9134 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9135 * \retval int - nb of bad simplices around this _LayerEdge
9137 //================================================================================
9139 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
9141 if ( !_smooFunction )
9142 return 0; // _LayerEdge inflated along EDGE or FACE
9144 return 0; // not inflated
9146 const gp_XYZ& curPos = _pos.back();
9147 const gp_XYZ& prevPos = _pos[0]; //PrevCheckPos();
9149 // quality metrics (orientation) of tetras around _tgtNode
9151 double vol, minVolBefore = 1e100;
9152 for ( size_t i = 0; i < _simplices.size(); ++i )
9154 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9155 minVolBefore = Min( minVolBefore, vol );
9157 int nbBad = _simplices.size() - nbOkBefore;
9159 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9161 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
9162 _smooFunction = _funs[ FUN_LAPLACIAN ];
9163 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
9164 _smooFunction = _funs[ FUN_CENTROIDAL ];
9167 // compute new position for the last _pos using different _funs
9169 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9172 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9173 else if ( _funs[ iFun ] == _smooFunction )
9174 continue; // _smooFunction again
9175 else if ( step > 1 )
9176 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9178 break; // let "easy" functions improve elements around distorted ones
9182 double delta = _curvature->lenDelta( _len );
9184 newPos += _normal * delta;
9187 double segLen = _normal * ( newPos - prevPos );
9188 if ( segLen + delta > 0 )
9189 newPos += _normal * delta;
9191 // double segLenChange = _normal * ( curPos - newPos );
9192 // newPos += 0.5 * _normal * segLenChange;
9196 double minVolAfter = 1e100;
9197 for ( size_t i = 0; i < _simplices.size(); ++i )
9199 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9200 minVolAfter = Min( minVolAfter, vol );
9203 if ( nbOkAfter < nbOkBefore )
9205 if (( isConcaveFace || findBest ) &&
9206 ( nbOkAfter == nbOkBefore ) &&
9207 ( minVolAfter <= minVolBefore )
9211 nbBad = _simplices.size() - nbOkAfter;
9212 minVolBefore = minVolAfter;
9213 nbOkBefore = nbOkAfter;
9215 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9216 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9217 _pos.back() = newPos;
9219 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9220 << ( nbBad ? "--BAD" : ""));
9222 // commented for IPAL0052478
9223 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
9224 // _len += prevPos.Distance(newPos);
9226 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
9228 //_smooFunction = _funs[ iFun ];
9229 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
9230 // << "\t nbBad: " << _simplices.size() - nbOkAfter
9231 // << " minVol: " << minVolAfter
9232 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
9234 continue; // look for a better function
9240 } // loop on smoothing functions
9245 //================================================================================
9247 * \brief Chooses a smoothing technique giving a position most close to an initial one.
9248 * For a correct result, _simplices must contain nodes lying on geometry.
9250 //================================================================================
9252 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
9253 const TNode2Edge& /*n2eMap*/)
9255 if ( _smooFunction ) return;
9257 // use smoothNefPolygon() near concaveVertices
9258 if ( !concaveVertices.empty() )
9260 _smooFunction = _funs[ FUN_CENTROIDAL ];
9262 Set( ON_CONCAVE_FACE );
9264 for ( size_t i = 0; i < _simplices.size(); ++i )
9266 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
9268 _smooFunction = _funs[ FUN_NEFPOLY ];
9270 // set FUN_CENTROIDAL to neighbor edges
9271 for ( i = 0; i < _neibors.size(); ++i )
9273 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
9275 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
9282 // // this choice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
9283 // // where the nodes are smoothed too far along a sphere thus creating
9284 // // inverted _simplices
9285 // double dist[theNbSmooFuns];
9286 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
9287 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
9289 // double minDist = Precision::Infinite();
9290 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
9291 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
9293 // gp_Pnt newP = (this->*_funs[i])();
9294 // dist[i] = p.SquareDistance( newP );
9295 // if ( dist[i]*coef[i] < minDist )
9297 // _smooFunction = _funs[i];
9298 // minDist = dist[i]*coef[i];
9304 _smooFunction = _funs[ FUN_LAPLACIAN ];
9307 // for ( size_t i = 0; i < _simplices.size(); ++i )
9308 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
9309 // if ( minDim == 0 )
9310 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9311 // else if ( minDim == 1 )
9312 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9316 // for ( int i = 0; i < FUN_NB; ++i )
9318 // //cout << dist[i] << " ";
9319 // if ( _smooFunction == _funs[i] ) {
9321 // //debugMsg( fNames[i] );
9325 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
9328 //================================================================================
9330 * \brief Returns a name of _SmooFunction
9332 //================================================================================
9334 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
9337 fun = _smooFunction;
9338 for ( int i = 0; i < theNbSmooFuns; ++i )
9339 if ( fun == _funs[i] )
9342 return theNbSmooFuns;
9345 //================================================================================
9347 * \brief Computes a new node position using Laplacian smoothing
9349 //================================================================================
9351 gp_XYZ _LayerEdge::smoothLaplacian()
9353 gp_XYZ newPos (0,0,0);
9354 for ( size_t i = 0; i < _simplices.size(); ++i )
9355 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9356 newPos /= _simplices.size();
9361 //================================================================================
9363 * \brief Computes a new node position using angular-based smoothing
9365 //================================================================================
9367 gp_XYZ _LayerEdge::smoothAngular()
9369 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
9370 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
9371 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
9373 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9375 for ( size_t i = 0; i < _simplices.size(); ++i )
9377 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9378 edgeDir.push_back( p - pPrev );
9379 edgeSize.push_back( edgeDir.back().Magnitude() );
9380 if ( edgeSize.back() < numeric_limits<double>::min() )
9383 edgeSize.pop_back();
9387 edgeDir.back() /= edgeSize.back();
9388 points.push_back( p );
9393 edgeDir.push_back ( edgeDir[0] );
9394 edgeSize.push_back( edgeSize[0] );
9395 pN /= points.size();
9397 gp_XYZ newPos(0,0,0);
9399 for ( size_t i = 0; i < points.size(); ++i )
9401 gp_Vec toN = pN - points[i];
9402 double toNLen = toN.Magnitude();
9403 if ( toNLen < numeric_limits<double>::min() )
9408 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
9409 double bisecLen = bisec.SquareMagnitude();
9410 if ( bisecLen < numeric_limits<double>::min() )
9412 gp_Vec norm = edgeDir[i] ^ toN;
9413 bisec = norm ^ edgeDir[i];
9414 bisecLen = bisec.SquareMagnitude();
9416 bisecLen = Sqrt( bisecLen );
9420 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
9421 sumSize += bisecLen;
9423 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
9424 sumSize += ( edgeSize[i] + edgeSize[i+1] );
9430 // project newPos to an average plane
9432 gp_XYZ norm(0,0,0); // plane normal
9433 points.push_back( points[0] );
9434 for ( size_t i = 1; i < points.size(); ++i )
9436 gp_XYZ vec1 = points[ i-1 ] - pN;
9437 gp_XYZ vec2 = points[ i ] - pN;
9438 gp_XYZ cross = vec1 ^ vec2;
9441 if ( cross * norm < numeric_limits<double>::min() )
9442 norm += cross.Reversed();
9446 catch (Standard_Failure&) { // if |cross| == 0.
9449 gp_XYZ vec = newPos - pN;
9450 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
9451 newPos = newPos - r * norm;
9456 //================================================================================
9458 * \brief Computes a new node position using weighted node positions
9460 //================================================================================
9462 gp_XYZ _LayerEdge::smoothLengthWeighted()
9464 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
9465 vector< gp_XYZ > points; points. reserve( _simplices.size() );
9467 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9468 for ( size_t i = 0; i < _simplices.size(); ++i )
9470 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9471 edgeSize.push_back( ( p - pPrev ).Modulus() );
9472 if ( edgeSize.back() < numeric_limits<double>::min() )
9474 edgeSize.pop_back();
9478 points.push_back( p );
9482 edgeSize.push_back( edgeSize[0] );
9484 gp_XYZ newPos(0,0,0);
9486 for ( size_t i = 0; i < points.size(); ++i )
9488 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
9489 sumSize += edgeSize[i] + edgeSize[i+1];
9495 //================================================================================
9497 * \brief Computes a new node position using angular-based smoothing
9499 //================================================================================
9501 gp_XYZ _LayerEdge::smoothCentroidal()
9503 gp_XYZ newPos(0,0,0);
9504 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
9506 for ( size_t i = 0; i < _simplices.size(); ++i )
9508 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9509 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
9510 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
9511 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
9514 newPos += gc * size;
9521 //================================================================================
9523 * \brief Computes a new node position located inside a Nef polygon
9525 //================================================================================
9527 gp_XYZ _LayerEdge::smoothNefPolygon()
9528 #ifdef OLD_NEF_POLYGON
9530 gp_XYZ newPos(0,0,0);
9532 // get a plane to search a solution on
9534 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9536 const double tol = numeric_limits<double>::min();
9537 gp_XYZ center(0,0,0);
9538 for ( i = 0; i < _simplices.size(); ++i )
9540 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
9541 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
9542 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9544 vecs.back() = vecs[0];
9545 center /= _simplices.size();
9547 gp_XYZ zAxis(0,0,0);
9548 for ( i = 0; i < _simplices.size(); ++i )
9549 zAxis += vecs[i] ^ vecs[i+1];
9552 for ( i = 0; i < _simplices.size(); ++i )
9555 if ( yAxis.SquareModulus() > tol )
9558 gp_XYZ xAxis = yAxis ^ zAxis;
9559 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9560 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9561 // p0.Distance( _simplices[2]._nPrev ));
9562 // gp_XYZ center = smoothLaplacian();
9563 // gp_XYZ xAxis, yAxis, zAxis;
9564 // for ( i = 0; i < _simplices.size(); ++i )
9566 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9567 // if ( xAxis.SquareModulus() > tol*tol )
9570 // for ( i = 1; i < _simplices.size(); ++i )
9572 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9573 // zAxis = xAxis ^ yAxis;
9574 // if ( zAxis.SquareModulus() > tol*tol )
9577 // if ( i == _simplices.size() ) return newPos;
9579 yAxis = zAxis ^ xAxis;
9580 xAxis /= xAxis.Modulus();
9581 yAxis /= yAxis.Modulus();
9583 // get half-planes of _simplices
9585 vector< _halfPlane > halfPlns( _simplices.size() );
9587 for ( size_t i = 0; i < _simplices.size(); ++i )
9589 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9590 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
9591 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9592 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9593 gp_XY vec12 = p2 - p1;
9594 double dist12 = vec12.Modulus();
9598 halfPlns[ nbHP ]._pos = p1;
9599 halfPlns[ nbHP ]._dir = vec12;
9600 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9604 // intersect boundaries of half-planes, define state of intersection points
9605 // in relation to all half-planes and calculate internal point of a 2D polygon
9608 gp_XY newPos2D (0,0);
9610 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9611 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9612 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9614 vector< vector< TIntPntState > > allIntPnts( nbHP );
9615 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9617 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9618 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9620 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9621 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9624 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9626 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9628 if ( iHP1 == iHP2 ) continue;
9630 TIntPntState & ips1 = intPnts1[ iHP2 ];
9631 if ( ips1.second == UNDEF )
9633 // find an intersection point of boundaries of iHP1 and iHP2
9635 if ( iHP2 == iPrev ) // intersection with neighbors is known
9636 ips1.first = halfPlns[ iHP1 ]._pos;
9637 else if ( iHP2 == iNext )
9638 ips1.first = halfPlns[ iHP2 ]._pos;
9639 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9640 ips1.second = NO_INT;
9642 // classify the found intersection point
9643 if ( ips1.second != NO_INT )
9645 ips1.second = NOT_OUT;
9646 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9647 if ( i != iHP1 && i != iHP2 &&
9648 halfPlns[ i ].IsOut( ips1.first, tol ))
9649 ips1.second = IS_OUT;
9651 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9652 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9653 TIntPntState & ips2 = intPnts2[ iHP1 ];
9656 if ( ips1.second == NOT_OUT )
9659 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9663 // find a NOT_OUT segment of boundary which is located between
9664 // two NOT_OUT int points
9667 continue; // no such a segment
9671 // sort points along the boundary
9672 map< double, TIntPntState* > ipsByParam;
9673 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9675 TIntPntState & ips1 = intPnts1[ iHP2 ];
9676 if ( ips1.second != NO_INT )
9678 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9679 double param = op * halfPlns[ iHP1 ]._dir;
9680 ipsByParam.insert( make_pair( param, & ips1 ));
9683 // look for two neighboring NOT_OUT points
9685 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9686 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9688 TIntPntState & ips1 = *(u2ips->second);
9689 if ( ips1.second == NOT_OUT )
9690 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9691 else if ( nbNotOut >= 2 )
9698 if ( nbNotOut >= 2 )
9700 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9703 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9710 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9719 #else // OLD_NEF_POLYGON
9720 { ////////////////////////////////// NEW
9721 gp_XYZ newPos(0,0,0);
9723 // get a plane to search a solution on
9726 gp_XYZ center(0,0,0);
9727 for ( i = 0; i < _simplices.size(); ++i )
9728 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9729 center /= _simplices.size();
9731 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9732 for ( i = 0; i < _simplices.size(); ++i )
9733 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9734 vecs.back() = vecs[0];
9736 const double tol = numeric_limits<double>::min();
9737 gp_XYZ zAxis(0,0,0);
9738 for ( i = 0; i < _simplices.size(); ++i )
9740 gp_XYZ cross = vecs[i] ^ vecs[i+1];
9743 if ( cross * zAxis < tol )
9744 zAxis += cross.Reversed();
9748 catch (Standard_Failure) { // if |cross| == 0.
9753 for ( i = 0; i < _simplices.size(); ++i )
9756 if ( yAxis.SquareModulus() > tol )
9759 gp_XYZ xAxis = yAxis ^ zAxis;
9760 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9761 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9762 // p0.Distance( _simplices[2]._nPrev ));
9763 // gp_XYZ center = smoothLaplacian();
9764 // gp_XYZ xAxis, yAxis, zAxis;
9765 // for ( i = 0; i < _simplices.size(); ++i )
9767 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9768 // if ( xAxis.SquareModulus() > tol*tol )
9771 // for ( i = 1; i < _simplices.size(); ++i )
9773 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9774 // zAxis = xAxis ^ yAxis;
9775 // if ( zAxis.SquareModulus() > tol*tol )
9778 // if ( i == _simplices.size() ) return newPos;
9780 yAxis = zAxis ^ xAxis;
9781 xAxis /= xAxis.Modulus();
9782 yAxis /= yAxis.Modulus();
9784 // get half-planes of _simplices
9786 vector< _halfPlane > halfPlns( _simplices.size() );
9788 for ( size_t i = 0; i < _simplices.size(); ++i )
9790 const gp_XYZ& OP1 = vecs[ i ];
9791 const gp_XYZ& OP2 = vecs[ i+1 ];
9792 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9793 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9794 gp_XY vec12 = p2 - p1;
9795 double dist12 = vec12.Modulus();
9799 halfPlns[ nbHP ]._pos = p1;
9800 halfPlns[ nbHP ]._dir = vec12;
9801 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9805 // intersect boundaries of half-planes, define state of intersection points
9806 // in relation to all half-planes and calculate internal point of a 2D polygon
9809 gp_XY newPos2D (0,0);
9811 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9812 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9813 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9815 vector< vector< TIntPntState > > allIntPnts( nbHP );
9816 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9818 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9819 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9821 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9822 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9825 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9827 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9829 if ( iHP1 == iHP2 ) continue;
9831 TIntPntState & ips1 = intPnts1[ iHP2 ];
9832 if ( ips1.second == UNDEF )
9834 // find an intersection point of boundaries of iHP1 and iHP2
9836 if ( iHP2 == iPrev ) // intersection with neighbors is known
9837 ips1.first = halfPlns[ iHP1 ]._pos;
9838 else if ( iHP2 == iNext )
9839 ips1.first = halfPlns[ iHP2 ]._pos;
9840 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9841 ips1.second = NO_INT;
9843 // classify the found intersection point
9844 if ( ips1.second != NO_INT )
9846 ips1.second = NOT_OUT;
9847 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9848 if ( i != iHP1 && i != iHP2 &&
9849 halfPlns[ i ].IsOut( ips1.first, tol ))
9850 ips1.second = IS_OUT;
9852 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9853 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9854 TIntPntState & ips2 = intPnts2[ iHP1 ];
9857 if ( ips1.second == NOT_OUT )
9860 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9864 // find a NOT_OUT segment of boundary which is located between
9865 // two NOT_OUT int points
9868 continue; // no such a segment
9872 // sort points along the boundary
9873 map< double, TIntPntState* > ipsByParam;
9874 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9876 TIntPntState & ips1 = intPnts1[ iHP2 ];
9877 if ( ips1.second != NO_INT )
9879 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9880 double param = op * halfPlns[ iHP1 ]._dir;
9881 ipsByParam.insert( make_pair( param, & ips1 ));
9884 // look for two neighboring NOT_OUT points
9886 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9887 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9889 TIntPntState & ips1 = *(u2ips->second);
9890 if ( ips1.second == NOT_OUT )
9891 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9892 else if ( nbNotOut >= 2 )
9899 if ( nbNotOut >= 2 )
9901 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9904 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9911 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9920 #endif // OLD_NEF_POLYGON
9922 //================================================================================
9924 * \brief Add a new segment to _LayerEdge during inflation
9926 //================================================================================
9928 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
9933 if ( len > _maxLen )
9936 Block( eos.GetData() );
9938 const double lenDelta = len - _len;
9939 // if ( lenDelta < 0 )
9941 if ( lenDelta < len * 1e-3 )
9943 Block( eos.GetData() );
9947 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9948 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
9950 if ( eos._hyp.IsOffsetMethod() )
9954 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
9955 while ( faceIt->more() )
9957 const SMDS_MeshElement* face = faceIt->next();
9958 if ( !eos.GetNormal( face, faceNorm ))
9961 // translate plane of a face
9962 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
9964 // find point of intersection of the face plane located at baryCenter
9965 // and _normal located at newXYZ
9966 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
9967 double dot = ( faceNorm.XYZ() * _normal );
9968 if ( dot < std::numeric_limits<double>::min() )
9969 dot = lenDelta * 1e-3;
9970 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
9971 newXYZ += step * _normal;
9973 _lenFactor = _normal * ( newXYZ - oldXYZ ) / lenDelta; // _lenFactor is used in InvalidateStep()
9977 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
9980 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
9981 _pos.push_back( newXYZ );
9983 if ( !eos._sWOL.IsNull() )
9984 if ( !UpdatePositionOnSWOL( n, 2*lenDelta, eos, helper ))
9986 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
9988 Block( eos.GetData() );
9995 if ( eos.ShapeType() != TopAbs_FACE )
9997 for ( size_t i = 0; i < _neibors.size(); ++i )
9998 //if ( _len > _neibors[i]->GetSmooLen() )
9999 _neibors[i]->Set( MOVED );
10003 dumpMove( n ); //debug
10007 //================================================================================
10009 * \brief Update last position on SWOL by projecting node on SWOL
10011 //================================================================================
10013 bool _LayerEdge::UpdatePositionOnSWOL( SMDS_MeshNode* n,
10015 _EdgesOnShape& eos,
10016 SMESH_MesherHelper& helper )
10020 if ( eos.SWOLType() == TopAbs_EDGE )
10022 double u = Precision::Infinite(); // to force projection w/o distance check
10023 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u, tol, /*force=*/true, distXYZ );
10024 _pos.back().SetCoord( u, 0, 0 );
10025 if ( _nodes.size() > 1 && uvOK )
10027 SMDS_EdgePositionPtr pos = n->GetPosition();
10028 pos->SetUParameter( u );
10031 else // TopAbs_FACE
10033 gp_XY uv( Precision::Infinite(), 0 );
10034 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv, tol, /*force=*/true, distXYZ );
10035 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
10036 if ( _nodes.size() > 1 && uvOK )
10038 SMDS_FacePositionPtr pos = n->GetPosition();
10039 pos->SetUParameter( uv.X() );
10040 pos->SetVParameter( uv.Y() );
10045 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
10050 //================================================================================
10052 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
10054 //================================================================================
10056 void _LayerEdge::Block( _SolidData& data )
10058 //if ( Is( BLOCKED )) return;
10061 SMESH_Comment msg( "#BLOCK shape=");
10062 msg << data.GetShapeEdges( this )->_shapeID
10063 << ", nodes " << _nodes[0]->GetID() << ", " << _nodes.back()->GetID();
10064 dumpCmd( msg + " -- BEGIN");
10067 std::queue<_LayerEdge*> queue;
10068 queue.push( this );
10070 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
10071 while ( !queue.empty() )
10073 _LayerEdge* edge = queue.front(); queue.pop();
10074 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
10075 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
10076 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
10078 _LayerEdge* neibor = edge->_neibors[iN];
10079 if ( neibor->_maxLen < edge->_maxLen * 1.01 )
10081 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
10082 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
10083 double minDist = pSrc.SquareDistance( pSrcN );
10084 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
10085 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
10086 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
10087 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
10088 //if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() ) viscous_layers_00/A3
10090 //newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
10091 // newMaxLen *= Min( edge->_lenFactor / neibor->_lenFactor,
10092 // neibor->_lenFactor / edge->_lenFactor );
10094 if ( neibor->_maxLen > newMaxLen )
10096 neibor->SetMaxLen( newMaxLen );
10097 if ( neibor->_maxLen < neibor->_len )
10099 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
10100 int lastStep = neibor->Is( BLOCKED ) ? 1 : 0;
10101 while ( neibor->_len > neibor->_maxLen &&
10102 neibor->NbSteps() > lastStep )
10103 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
10104 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
10105 //neibor->Block( data );
10107 queue.push( neibor );
10111 dumpCmd( msg + " -- END");
10114 //================================================================================
10116 * \brief Remove last inflation step
10118 //================================================================================
10120 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
10122 if ( _pos.size() > curStep && _nodes.size() > 1 )
10124 _pos.resize( curStep );
10126 gp_Pnt nXYZ = _pos.back();
10127 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
10128 SMESH_TNodeXYZ curXYZ( n );
10129 if ( !eos._sWOL.IsNull() )
10131 TopLoc_Location loc;
10132 if ( eos.SWOLType() == TopAbs_EDGE )
10134 SMDS_EdgePositionPtr pos = n->GetPosition();
10135 pos->SetUParameter( nXYZ.X() );
10137 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
10138 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
10142 SMDS_FacePositionPtr pos = n->GetPosition();
10143 pos->SetUParameter( nXYZ.X() );
10144 pos->SetVParameter( nXYZ.Y() );
10145 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
10146 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
10149 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
10152 if ( restoreLength )
10154 if ( NbSteps() == 0 )
10156 else if ( IsOnFace() && Is( MOVED ))
10157 _len = ( nXYZ.XYZ() - SMESH_NodeXYZ( _nodes[0] )) * _normal;
10159 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
10165 //================================================================================
10167 * \brief Return index of a _pos distant from _normal
10169 //================================================================================
10171 int _LayerEdge::GetSmoothedPos( const double tol )
10174 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
10176 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
10177 if ( normDist > tol * tol )
10183 //================================================================================
10185 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
10187 //================================================================================
10189 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
10191 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
10194 // find the 1st smoothed _pos
10195 int iSmoothed = GetSmoothedPos( tol );
10196 if ( !iSmoothed ) return;
10198 gp_XYZ normal = _normal;
10199 if ( Is( NORMAL_UPDATED ))
10202 for ( size_t i = 0; i < _neibors.size(); ++i )
10204 if ( _neibors[i]->IsOnFace() )
10206 double dot = _normal * _neibors[i]->_normal;
10207 if ( dot < minDot )
10209 normal = _neibors[i]->_normal;
10214 if ( minDot == 1. )
10215 for ( size_t i = 1; i < _pos.size(); ++i )
10217 normal = _pos[i] - _pos[0];
10218 double size = normal.Modulus();
10219 if ( size > RealSmall() )
10226 const double r = 0.2;
10227 for ( int iter = 0; iter < 50; ++iter )
10230 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
10232 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
10233 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
10235 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
10236 double newLen = ( 1-r ) * midLen + r * segLen[i];
10237 const_cast< double& >( segLen[i] ) = newLen;
10238 // check angle between normal and (_pos[i+1], _pos[i] )
10239 gp_XYZ posDir = _pos[i+1] - _pos[i];
10240 double size = posDir.SquareModulus();
10241 if ( size > RealSmall() )
10242 minDot = Min( minDot, ( normal * posDir ) * ( normal * posDir ) / size );
10244 if ( minDot > 0.5 * 0.5 )
10250 //================================================================================
10252 * \brief Print flags
10254 //================================================================================
10256 std::string _LayerEdge::DumpFlags() const
10258 SMESH_Comment dump;
10259 for ( int flag = 1; flag < 0x1000000; flag *= 2 )
10260 if ( _flags & flag )
10262 EFlags f = (EFlags) flag;
10264 case TO_SMOOTH: dump << "TO_SMOOTH"; break;
10265 case MOVED: dump << "MOVED"; break;
10266 case SMOOTHED: dump << "SMOOTHED"; break;
10267 case DIFFICULT: dump << "DIFFICULT"; break;
10268 case ON_CONCAVE_FACE: dump << "ON_CONCAVE_FACE"; break;
10269 case BLOCKED: dump << "BLOCKED"; break;
10270 case INTERSECTED: dump << "INTERSECTED"; break;
10271 case NORMAL_UPDATED: dump << "NORMAL_UPDATED"; break;
10272 case UPD_NORMAL_CONV: dump << "UPD_NORMAL_CONV"; break;
10273 case MARKED: dump << "MARKED"; break;
10274 case MULTI_NORMAL: dump << "MULTI_NORMAL"; break;
10275 case NEAR_BOUNDARY: dump << "NEAR_BOUNDARY"; break;
10276 case SMOOTHED_C1: dump << "SMOOTHED_C1"; break;
10277 case DISTORTED: dump << "DISTORTED"; break;
10278 case RISKY_SWOL: dump << "RISKY_SWOL"; break;
10279 case SHRUNK: dump << "SHRUNK"; break;
10280 case UNUSED_FLAG: dump << "UNUSED_FLAG"; break;
10284 cout << dump << endl;
10289 //================================================================================
10291 * \brief Create layers of prisms
10293 //================================================================================
10295 bool _ViscousBuilder::refine(_SolidData& data)
10297 SMESH_MesherHelper& helper = data.GetHelper();
10298 helper.SetElementsOnShape(false);
10300 Handle(Geom_Curve) curve;
10301 Handle(ShapeAnalysis_Surface) surface;
10302 TopoDS_Edge geomEdge;
10303 TopoDS_Face geomFace;
10304 TopLoc_Location loc;
10307 vector< gp_XYZ > pos3D;
10308 bool isOnEdge, isTooConvexFace = false;
10309 TGeomID prevBaseId = -1;
10310 TNode2Edge* n2eMap = 0;
10311 TNode2Edge::iterator n2e;
10313 // Create intermediate nodes on each _LayerEdge
10315 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
10317 _EdgesOnShape& eos = data._edgesOnShape[iS];
10318 if ( eos._edges.empty() ) continue;
10320 if ( eos._edges[0]->_nodes.size() < 2 )
10321 continue; // on _noShrinkShapes
10323 // get data of a shrink shape
10325 geomEdge.Nullify(); geomFace.Nullify();
10326 curve.Nullify(); surface.Nullify();
10327 if ( !eos._sWOL.IsNull() )
10329 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
10332 geomEdge = TopoDS::Edge( eos._sWOL );
10333 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
10337 geomFace = TopoDS::Face( eos._sWOL );
10338 surface = helper.GetSurface( geomFace );
10341 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
10343 geomFace = TopoDS::Face( eos._shape );
10344 surface = helper.GetSurface( geomFace );
10345 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
10346 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
10347 eos._eosC1[ i ]->_toSmooth = true;
10349 isTooConvexFace = false;
10350 if ( _ConvexFace* cf = data.GetConvexFace( eos._shapeID ))
10351 isTooConvexFace = cf->_isTooCurved;
10354 vector< double > segLen;
10355 for ( size_t i = 0; i < eos._edges.size(); ++i )
10357 _LayerEdge& edge = *eos._edges[i];
10358 if ( edge._pos.size() < 2 )
10361 // get accumulated length of segments
10362 segLen.resize( edge._pos.size() );
10364 if ( eos._sWOL.IsNull() )
10366 bool useNormal = true;
10367 bool usePos = false;
10368 bool smoothed = false;
10369 double preci = 0.1 * edge._len;
10370 if ( eos._toSmooth && edge._pos.size() > 2 )
10372 smoothed = edge.GetSmoothedPos( preci );
10376 if ( !surface.IsNull() && !isTooConvexFace ) // edge smoothed on FACE
10378 useNormal = usePos = false;
10379 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
10380 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
10382 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
10383 if ( surface->Gap() < 2. * edge._len )
10384 segLen[j] = surface->Gap();
10390 else if ( !edge.Is( _LayerEdge::NORMAL_UPDATED ))
10392 #ifndef __NODES_AT_POS
10393 useNormal = usePos = false;
10394 edge._pos[1] = edge._pos.back();
10395 edge._pos.resize( 2 );
10396 segLen.resize( 2 );
10397 segLen[ 1 ] = edge._len;
10400 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
10402 useNormal = usePos = false;
10403 _LayerEdge tmpEdge; // get original _normal
10404 tmpEdge._nodes.push_back( edge._nodes[0] );
10405 if ( !setEdgeData( tmpEdge, eos, helper, data ))
10408 for ( size_t j = 1; j < edge._pos.size(); ++j )
10409 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
10413 for ( size_t j = 1; j < edge._pos.size(); ++j )
10414 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
10418 for ( size_t j = 1; j < edge._pos.size(); ++j )
10419 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
10423 bool swapped = ( edge._pos.size() > 2 );
10427 for ( size_t j = 1; j < edge._pos.size()-1; ++j )
10428 if ( segLen[j] > segLen.back() )
10430 segLen.erase( segLen.begin() + j );
10431 edge._pos.erase( edge._pos.begin() + j );
10434 else if ( segLen[j] < segLen[j-1] )
10436 std::swap( segLen[j], segLen[j-1] );
10437 std::swap( edge._pos[j], edge._pos[j-1] );
10442 // smooth a path formed by edge._pos
10443 #ifndef __NODES_AT_POS
10444 if (( smoothed ) /*&&
10445 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
10446 edge.SmoothPos( segLen, preci );
10449 else if ( eos._isRegularSWOL ) // usual SWOL
10451 if ( edge.Is( _LayerEdge::SMOOTHED ))
10453 SMESH_NodeXYZ p0( edge._nodes[0] );
10454 for ( size_t j = 1; j < edge._pos.size(); ++j )
10456 gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10457 segLen[j] = ( pj - p0 ) * edge._normal;
10462 for ( size_t j = 1; j < edge._pos.size(); ++j )
10463 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
10466 else // SWOL is surface with singularities or irregularly parametrized curve
10468 pos3D.resize( edge._pos.size() );
10470 if ( !surface.IsNull() )
10471 for ( size_t j = 0; j < edge._pos.size(); ++j )
10472 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10473 else if ( !curve.IsNull() )
10474 for ( size_t j = 0; j < edge._pos.size(); ++j )
10475 pos3D[j] = curve->Value( edge._pos[j].X() ).XYZ();
10477 for ( size_t j = 1; j < edge._pos.size(); ++j )
10478 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
10481 // allocate memory for new nodes if it is not yet refined
10482 const SMDS_MeshNode* tgtNode = edge._nodes.back();
10483 if ( edge._nodes.size() == 2 )
10485 #ifdef __NODES_AT_POS
10486 int nbNodes = edge._pos.size();
10488 int nbNodes = eos._hyp.GetNumberLayers() + 1;
10490 edge._nodes.resize( nbNodes, 0 );
10491 edge._nodes[1] = 0;
10492 edge._nodes.back() = tgtNode;
10494 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
10495 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
10496 if ( baseShapeId != prevBaseId )
10498 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
10499 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
10500 prevBaseId = baseShapeId;
10502 _LayerEdge* edgeOnSameNode = 0;
10503 bool useExistingPos = false;
10504 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
10506 edgeOnSameNode = n2e->second;
10507 useExistingPos = ( edgeOnSameNode->_len < edge._len ||
10508 segLen[0] == segLen.back() ); // too short inflation step (bos #20643)
10509 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
10510 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
10513 SMDS_EdgePositionPtr epos = lastPos;
10514 epos->SetUParameter( otherTgtPos.X() );
10518 SMDS_FacePositionPtr fpos = lastPos;
10519 fpos->SetUParameter( otherTgtPos.X() );
10520 fpos->SetVParameter( otherTgtPos.Y() );
10524 // create intermediate nodes
10525 const double h0 = eos._hyp.Get1stLayerThickness( segLen.back() );
10526 const double zeroLen = std::numeric_limits<double>::min();
10527 double hSum = 0, hi = h0/eos._hyp.GetStretchFactor();
10529 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
10531 // compute an intermediate position
10532 hi *= eos._hyp.GetStretchFactor();
10534 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
10536 int iPrevSeg = iSeg-1;
10537 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
10539 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
10540 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
10541 #ifdef __NODES_AT_POS
10542 pos = edge._pos[ iStep ];
10544 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
10545 if ( !eos._sWOL.IsNull() )
10547 // compute XYZ by parameters <pos>
10552 pos = curve->Value( u ).Transformed(loc);
10554 else if ( eos._isRegularSWOL )
10556 uv.SetCoord( pos.X(), pos.Y() );
10558 pos = surface->Value( pos.X(), pos.Y() );
10562 uv.SetCoord( pos.X(), pos.Y() );
10563 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
10564 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
10566 pos = surface->Value( uv );
10569 // create or update the node
10572 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
10573 if ( !eos._sWOL.IsNull() )
10576 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
10578 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
10582 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
10587 if ( !eos._sWOL.IsNull() )
10589 // make average pos from new and current parameters
10592 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
10593 if ( useExistingPos )
10594 u = helper.GetNodeU( geomEdge, node );
10595 pos = curve->Value( u ).Transformed(loc);
10597 SMDS_EdgePositionPtr epos = node->GetPosition();
10598 epos->SetUParameter( u );
10602 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
10603 if ( useExistingPos )
10604 uv = helper.GetNodeUV( geomFace, node );
10605 pos = surface->Value( uv );
10607 SMDS_FacePositionPtr fpos = node->GetPosition();
10608 fpos->SetUParameter( uv.X() );
10609 fpos->SetVParameter( uv.Y() );
10612 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
10614 } // loop on edge._nodes
10616 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
10619 edge._pos.back().SetCoord( u, 0,0);
10621 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
10623 if ( edgeOnSameNode )
10624 edgeOnSameNode->_pos.back() = edge._pos.back();
10627 } // loop on eos._edges to create nodes
10630 if ( !getMeshDS()->IsEmbeddedMode() )
10631 // Log node movement
10632 for ( size_t i = 0; i < eos._edges.size(); ++i )
10634 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
10635 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
10642 helper.SetElementsOnShape(true);
10644 vector< vector<const SMDS_MeshNode*>* > nnVec;
10645 set< vector<const SMDS_MeshNode*>* > nnSet;
10646 set< int > degenEdgeInd;
10647 vector<const SMDS_MeshElement*> degenVols;
10649 TopExp_Explorer exp( data._solid, TopAbs_FACE );
10650 for ( ; exp.More(); exp.Next() )
10652 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
10653 if ( data._ignoreFaceIds.count( faceID ))
10655 _EdgesOnShape* eos = data.GetShapeEdges( faceID );
10656 SMDS_MeshGroup* group = StdMeshers_ViscousLayers::CreateGroup( eos->_hyp.GetGroupName(),
10659 std::vector< const SMDS_MeshElement* > vols;
10660 const bool isReversedFace = data._reversedFaceIds.count( faceID );
10661 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
10662 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
10663 while ( fIt->more() )
10665 const SMDS_MeshElement* face = fIt->next();
10666 const int nbNodes = face->NbCornerNodes();
10667 nnVec.resize( nbNodes );
10669 degenEdgeInd.clear();
10670 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
10671 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
10672 for ( int iN = 0; iN < nbNodes; ++iN )
10674 const SMDS_MeshNode* n = nIt->next();
10675 _LayerEdge* edge = data._n2eMap[ n ];
10676 const int i = isReversedFace ? nbNodes-1-iN : iN;
10677 nnVec[ i ] = & edge->_nodes;
10678 maxZ = std::max( maxZ, nnVec[ i ]->size() );
10679 minZ = std::min( minZ, nnVec[ i ]->size() );
10681 if ( helper.HasDegeneratedEdges() )
10682 nnSet.insert( nnVec[ i ]);
10687 if ( 0 < nnSet.size() && nnSet.size() < 3 )
10691 const SMDS_MeshElement* vol;
10698 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10700 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
10701 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
10702 vols.push_back( vol );
10705 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10707 for ( int iN = 0; iN < nbNodes; ++iN )
10708 if ( nnVec[ iN ]->size() < iZ+1 )
10709 degenEdgeInd.insert( iN );
10711 if ( degenEdgeInd.size() == 1 ) // PYRAM
10713 int i2 = *degenEdgeInd.begin();
10714 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
10715 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
10716 vol = helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
10717 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
10718 vols.push_back( vol );
10722 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
10723 vol = helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
10724 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
10725 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
10726 (*nnVec[ i3 ])[ iZ ]);
10727 vols.push_back( vol );
10735 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10737 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
10738 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
10739 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
10740 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
10741 vols.push_back( vol );
10744 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10746 for ( int iN = 0; iN < nbNodes; ++iN )
10747 if ( nnVec[ iN ]->size() < iZ+1 )
10748 degenEdgeInd.insert( iN );
10750 switch ( degenEdgeInd.size() )
10754 int i2 = *degenEdgeInd.begin();
10755 int i3 = *degenEdgeInd.rbegin();
10756 bool ok = ( i3 - i2 == 1 );
10757 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
10758 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
10759 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
10761 vol = helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
10762 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
10763 vols.push_back( vol );
10765 degenVols.push_back( vol );
10769 default: // degen HEX
10771 vol = helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
10772 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
10773 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
10774 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
10775 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
10776 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
10777 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
10778 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
10779 vols.push_back( vol );
10780 degenVols.push_back( vol );
10787 return error("Not supported type of element", data._index);
10789 } // switch ( nbNodes )
10792 for ( size_t i = 0; i < vols.size(); ++i )
10793 group->Add( vols[ i ]);
10795 } // while ( fIt->more() )
10798 if ( !degenVols.empty() )
10800 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
10801 if ( !err || err->IsOK() )
10803 SMESH_BadInputElements* badElems =
10804 new SMESH_BadInputElements( getMeshDS(), COMPERR_WARNING, "Bad quality volumes created" );
10805 badElems->myBadElements.insert( badElems->myBadElements.end(),
10806 degenVols.begin(),degenVols.end() );
10807 err.reset( badElems );
10814 namespace VISCOUS_3D
10817 //--------------------------------------------------------------------------------
10819 * \brief Pair of periodic FACEs
10821 struct PeriodicFaces
10823 typedef StdMeshers_ProjectionUtils::TrsfFinder3D Trsf;
10825 ShrinkFace* _shriFace[2];
10826 TNodeNodeMap _nnMap;
10829 PeriodicFaces( ShrinkFace* sf1, ShrinkFace* sf2 ): _shriFace{ sf1, sf2 } {}
10830 bool IncludeShrunk( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces ) const;
10831 bool MoveNodes( const TopoDS_Face& tgtFace );
10832 void Clear() { _nnMap.clear(); }
10833 bool IsEmpty() const { return _nnMap.empty(); }
10836 //--------------------------------------------------------------------------------
10838 * \brief Shrink FACE data used to find periodic FACEs
10842 // ................................................................................
10843 struct BndPart //!< part of FACE boundary, either shrink or no-shrink
10845 bool _isShrink, _isReverse;
10848 std::vector< SMESH_NodeXYZ > _nodes;
10849 TopAbs_ShapeEnum _vertSWOLType[2]; // shrink part includes VERTEXes
10850 AverageHyp* _vertHyp[2];
10851 double _edgeWOLLen[2]; // length of wol EDGE
10852 double _tol; // to compare _edgeWOLLen's
10855 _isShrink(0), _isReverse(0), _nbSegments(0), _hyp(0),
10856 _vertSWOLType{ TopAbs_WIRE, TopAbs_WIRE }, _vertHyp{ 0, 0 }, _edgeWOLLen{ 0., 0.}
10859 bool IsEqualLengthEWOL( const BndPart& other ) const
10861 return ( std::abs( _edgeWOLLen[0] - other._edgeWOLLen[0] ) < _tol &&
10862 std::abs( _edgeWOLLen[1] - other._edgeWOLLen[1] ) < _tol );
10865 bool operator==( const BndPart& other ) const
10867 return ( _isShrink == other._isShrink &&
10868 _nbSegments == other._nbSegments &&
10869 _nodes.size() == other._nodes.size() &&
10870 vertSWOLType1() == other.vertSWOLType1() &&
10871 vertSWOLType2() == other.vertSWOLType2() &&
10873 ( *_hyp == *other._hyp &&
10874 vertHyp1() == other.vertHyp1() &&
10875 vertHyp2() == other.vertHyp2() &&
10876 IsEqualLengthEWOL( other )))
10879 bool CanAppend( const BndPart& other )
10881 return ( _isShrink == other._isShrink &&
10883 ( *_hyp == *other._hyp &&
10884 *_hyp == vertHyp2() &&
10885 vertHyp2() == other.vertHyp1() ))
10888 void Append( const BndPart& other )
10890 _nbSegments += other._nbSegments;
10891 bool hasCommonNode = ( _nodes.back()->GetID() == other._nodes.front()->GetID() );
10892 _nodes.insert( _nodes.end(), other._nodes.begin() + hasCommonNode, other._nodes.end() );
10893 _vertSWOLType[1] = other._vertSWOLType[1];
10895 _vertHyp[1] = other._vertHyp[1];
10896 _edgeWOLLen[1] = other._edgeWOLLen[1];
10899 const SMDS_MeshNode* Node(size_t i) const
10901 return _nodes[ _isReverse ? ( _nodes.size() - 1 - i ) : i ]._node;
10903 void Reverse() { _isReverse = !_isReverse; }
10904 const TopAbs_ShapeEnum& vertSWOLType1() const { return _vertSWOLType[ _isReverse ]; }
10905 const TopAbs_ShapeEnum& vertSWOLType2() const { return _vertSWOLType[ !_isReverse ]; }
10906 const AverageHyp& vertHyp1() const { return *(_vertHyp[ _isReverse ]); }
10907 const AverageHyp& vertHyp2() const { return *(_vertHyp[ !_isReverse ]); }
10909 // ................................................................................
10911 SMESH_subMesh* _subMesh;
10912 _SolidData* _data1;
10913 _SolidData* _data2;
10915 std::list< BndPart > _boundary;
10916 int _boundarySize, _nbBoundaryParts;
10918 void Init( SMESH_subMesh* sm, _SolidData* sd1, _SolidData* sd2 )
10920 _subMesh = sm; _data1 = sd1; _data2 = sd2;
10922 bool IsSame( const TopoDS_Face& face ) const
10924 return _subMesh->GetSubShape().IsSame( face );
10926 bool IsShrunk( const TopTools_MapOfShape& shrunkFaces ) const
10928 return shrunkFaces.Contains( _subMesh->GetSubShape() );
10931 //================================================================================
10933 * Check if meshes on two FACEs are equal
10935 bool IsPeriodic( ShrinkFace& other, PeriodicFaces& periodic )
10937 if ( !IsSameNbElements( other ))
10940 this->SetBoundary();
10941 other.SetBoundary();
10942 if ( this->_boundarySize != other._boundarySize ||
10943 this->_nbBoundaryParts != other._nbBoundaryParts )
10946 for ( int isReverse = 0; isReverse < 2; ++isReverse )
10949 Reverse( _boundary );
10951 // check boundaries
10952 bool equalBoundary = false;
10953 for ( int iP = 0; iP < _nbBoundaryParts && !equalBoundary; ++iP )
10955 if ( ! ( equalBoundary = ( this->_boundary == other._boundary )))
10956 // set first part at end
10957 _boundary.splice( _boundary.end(), _boundary, _boundary.begin() );
10959 if ( !equalBoundary )
10962 // check connectivity
10963 std::set<const SMDS_MeshElement*> elemsThis, elemsOther;
10964 this->GetElements( elemsThis );
10965 other.GetElements( elemsOther );
10966 SMESH_MeshEditor::Sew_Error err =
10967 SMESH_MeshEditor::FindMatchingNodes( elemsThis, elemsOther,
10968 this->_boundary.front().Node(0),
10969 other._boundary.front().Node(0),
10970 this->_boundary.front().Node(1),
10971 other._boundary.front().Node(1),
10973 if ( err != SMESH_MeshEditor::SEW_OK )
10976 // check node positions
10977 std::vector< gp_XYZ > srcPnts, tgtPnts;
10978 this->GetBoundaryPoints( srcPnts );
10979 other.GetBoundaryPoints( tgtPnts );
10980 if ( !periodic._trsf.Solve( srcPnts, tgtPnts )) {
10983 double tol = std::numeric_limits<double>::max(); // tolerance by segment size
10984 for ( size_t i = 1; i < srcPnts.size(); ++i ) {
10985 tol = Min( tol, ( srcPnts[i-1] - srcPnts[i] ).SquareModulus() );
10987 tol = 0.01 * Sqrt( tol );
10988 for ( BndPart& boundary : _boundary ) { // tolerance by VL thickness
10989 if ( boundary._isShrink )
10990 tol = Min( tol, boundary._hyp->Get1stLayerThickness() / 50. );
10992 bool nodeCoincide = true;
10993 TNodeNodeMap::iterator n2n = periodic._nnMap.begin();
10994 for ( ; n2n != periodic._nnMap.end() && nodeCoincide; ++n2n )
10996 SMESH_NodeXYZ nSrc = n2n->first;
10997 SMESH_NodeXYZ nTgt = n2n->second;
10998 gp_XYZ pTgt = periodic._trsf.Transform( nSrc );
10999 nodeCoincide = (( pTgt - nTgt ).SquareModulus() < tol * tol );
11001 if ( nodeCoincide )
11007 bool IsSameNbElements( ShrinkFace& other ) // check number of mesh faces
11009 SMESHDS_SubMesh* sm1 = this->_subMesh->GetSubMeshDS();
11010 SMESHDS_SubMesh* sm2 = other._subMesh->GetSubMeshDS();
11011 return ( sm1->NbElements() == sm2->NbElements() &&
11012 sm1->NbNodes() == sm2->NbNodes() );
11015 void Reverse( std::list< BndPart >& boundary )
11017 boundary.reverse();
11018 for ( std::list< BndPart >::iterator part = boundary.begin(); part != boundary.end(); ++part )
11024 if ( !_boundary.empty() )
11027 TopoDS_Face F = TopoDS::Face( _subMesh->GetSubShape() );
11028 if ( F.Orientation() >= TopAbs_INTERNAL ) F.Orientation( TopAbs_FORWARD );
11029 std::list< TopoDS_Edge > edges;
11030 std::list< int > nbEdgesInWire;
11031 /*int nbWires =*/ SMESH_Block::GetOrderedEdges (F, edges, nbEdgesInWire);
11033 // std::list< TopoDS_Edge >::iterator edgesEnd = edges.end();
11034 // if ( nbWires > 1 ) {
11035 // edgesEnd = edges.begin();
11036 // std::advance( edgesEnd, nbEdgesInWire.front() );
11038 StdMeshers_FaceSide fSide( F, edges, _subMesh->GetFather(),
11039 /*fwd=*/true, /*skipMedium=*/true );
11040 _boundarySize = fSide.NbSegments();
11042 //TopoDS_Vertex vv[2];
11043 //std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
11044 for ( int iE = 0; iE < nbEdgesInWire.front(); ++iE )
11048 std::vector<const SMDS_MeshNode*> nodes = fSide.GetOrderedNodes( iE );
11049 bndPart._nodes.assign( nodes.begin(), nodes.end() );
11050 bndPart._nbSegments = bndPart._nodes.size() - 1;
11052 _EdgesOnShape* eos = _data1->GetShapeEdges( fSide.EdgeID( iE ));
11054 bndPart._isShrink = ( eos->SWOLType() == TopAbs_FACE );
11055 if ( bndPart._isShrink )
11056 if (( _data1->_noShrinkShapes.count( eos->_shapeID )) ||
11057 ( _data2 && _data2->_noShrinkShapes.count( eos->_shapeID )))
11058 bndPart._isShrink = false;
11060 if ( bndPart._isShrink )
11062 bndPart._hyp = & eos->_hyp;
11063 _EdgesOnShape* eov[2] = { _data1->GetShapeEdges( fSide.FirstVertex( iE )),
11064 _data1->GetShapeEdges( fSide.LastVertex ( iE )) };
11065 for ( int iV = 0; iV < 2; ++iV )
11067 bndPart._vertHyp [iV] = & eov[iV]->_hyp;
11068 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11069 if ( _data1->_noShrinkShapes.count( eov[iV]->_shapeID ))
11070 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11071 if ( _data2 && bndPart._vertSWOLType[iV] != TopAbs_SHAPE )
11073 eov[iV] = _data2->GetShapeEdges( iV ? fSide.LastVertex(iE) : fSide.FirstVertex(iE ));
11074 if ( _data2->_noShrinkShapes.count( eov[iV]->_shapeID ))
11075 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11076 else if ( eov[iV]->SWOLType() > bndPart._vertSWOLType[iV] )
11077 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11080 bndPart._edgeWOLLen[0] = fSide.EdgeLength( iE - 1 );
11081 bndPart._edgeWOLLen[1] = fSide.EdgeLength( iE + 1 );
11083 bndPart._tol = std::numeric_limits<double>::max(); // tolerance by segment size
11084 for ( size_t i = 1; i < bndPart._nodes.size(); ++i )
11085 bndPart._tol = Min( bndPart._tol,
11086 ( bndPart._nodes[i-1] - bndPart._nodes[i] ).SquareModulus() );
11089 if ( _boundary.empty() || ! _boundary.back().CanAppend( bndPart ))
11090 _boundary.push_back( bndPart );
11092 _boundary.back().Append( bndPart );
11095 _nbBoundaryParts = _boundary.size();
11096 if ( _nbBoundaryParts > 1 && _boundary.front()._isShrink == _boundary.back()._isShrink )
11098 _boundary.back().Append( _boundary.front() );
11099 _boundary.pop_front();
11100 --_nbBoundaryParts;
11104 void GetElements( std::set<const SMDS_MeshElement*>& theElems)
11106 if ( SMESHDS_SubMesh* sm = _subMesh->GetSubMeshDS() )
11107 for ( SMDS_ElemIteratorPtr fIt = sm->GetElements(); fIt->more(); )
11108 theElems.insert( theElems.end(), fIt->next() );
11113 void GetBoundaryPoints( std::vector< gp_XYZ >& points )
11115 points.reserve( _boundarySize );
11116 size_t nb = _boundary.rbegin()->_nodes.size();
11117 smIdType lastID = _boundary.rbegin()->Node( nb - 1 )->GetID();
11118 std::list< BndPart >::const_iterator part = _boundary.begin();
11119 for ( ; part != _boundary.end(); ++part )
11121 size_t nb = part->_nodes.size();
11123 size_t iR = nb - 1;
11124 size_t* i = part->_isReverse ? &iR : &iF;
11125 if ( part->_nodes[ *i ]->GetID() == lastID )
11127 for ( ; iF < nb; ++iF, --iR )
11128 points.push_back( part->_nodes[ *i ]);
11130 lastID = part->_nodes[ *i ]->GetID();
11133 }; // struct ShrinkFace
11135 //--------------------------------------------------------------------------------
11137 * \brief Periodic FACEs
11141 std::vector< ShrinkFace > _shrinkFaces;
11142 std::vector< PeriodicFaces > _periodicFaces;
11144 PeriodicFaces* GetPeriodic( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces )
11146 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11147 if ( _periodicFaces[ i ].IncludeShrunk( face, shrunkFaces ))
11148 return & _periodicFaces[ i ];
11151 void ClearPeriodic( const TopoDS_Face& face )
11153 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11154 if ( _periodicFaces[ i ]._shriFace[0]->IsSame( face ) ||
11155 _periodicFaces[ i ]._shriFace[1]->IsSame( face ))
11156 _periodicFaces[ i ].Clear();
11160 //================================================================================
11162 * Check if a pair includes the given FACE and the other FACE is already shrunk
11164 bool PeriodicFaces::IncludeShrunk( const TopoDS_Face& face,
11165 const TopTools_MapOfShape& shrunkFaces ) const
11167 if ( IsEmpty() ) return false;
11168 return (( _shriFace[0]->IsSame( face ) && _shriFace[1]->IsShrunk( shrunkFaces )) ||
11169 ( _shriFace[1]->IsSame( face ) && _shriFace[0]->IsShrunk( shrunkFaces )));
11172 //================================================================================
11174 * Make equal meshes on periodic faces by moving corresponding nodes
11176 bool PeriodicFaces::MoveNodes( const TopoDS_Face& tgtFace )
11178 int iTgt = _shriFace[1]->IsSame( tgtFace );
11179 int iSrc = 1 - iTgt;
11181 _SolidData* dataSrc = _shriFace[iSrc]->_data1;
11182 _SolidData* dataTgt = _shriFace[iTgt]->_data1;
11184 Trsf * trsf = & _trsf, trsfInverse;
11187 trsfInverse = _trsf;
11188 if ( !trsfInverse.Invert())
11190 trsf = &trsfInverse;
11192 SMESHDS_Mesh* meshDS = dataSrc->GetHelper().GetMeshDS();
11194 dumpFunction(SMESH_Comment("periodicMoveNodes_F")
11195 << _shriFace[iSrc]->_subMesh->GetId() << "_F"
11196 << _shriFace[iTgt]->_subMesh->GetId() );
11197 TNode2Edge::iterator n2e;
11198 TNodeNodeMap::iterator n2n = _nnMap.begin();
11199 for ( ; n2n != _nnMap.end(); ++n2n )
11201 const SMDS_MeshNode* const* nn = & n2n->first;
11202 const SMDS_MeshNode* nSrc = nn[ iSrc ];
11203 const SMDS_MeshNode* nTgt = nn[ iTgt ];
11205 if (( nSrc->GetPosition()->GetDim() == 2 ) ||
11206 (( n2e = dataSrc->_n2eMap.find( nSrc )) == dataSrc->_n2eMap.end() ))
11208 SMESH_NodeXYZ pSrc = nSrc;
11209 gp_XYZ pTgt = trsf->Transform( pSrc );
11210 meshDS->MoveNode( nTgt, pTgt.X(), pTgt.Y(), pTgt.Z() );
11214 _LayerEdge* leSrc = n2e->second;
11215 n2e = dataTgt->_n2eMap.find( nTgt );
11216 if ( n2e == dataTgt->_n2eMap.end() )
11218 _LayerEdge* leTgt = n2e->second;
11219 if ( leSrc->_nodes.size() != leTgt->_nodes.size() )
11221 for ( size_t iN = 1; iN < leSrc->_nodes.size(); ++iN )
11223 SMESH_NodeXYZ pSrc = leSrc->_nodes[ iN ];
11224 gp_XYZ pTgt = trsf->Transform( pSrc );
11225 meshDS->MoveNode( leTgt->_nodes[ iN ], pTgt.X(), pTgt.Y(), pTgt.Z() );
11227 dumpMove( leTgt->_nodes[ iN ]);
11231 bool done = ( n2n == _nnMap.end() );
11232 debugMsg( "PeriodicFaces::MoveNodes "
11233 << _shriFace[iSrc]->_subMesh->GetId() << " -> "
11234 << _shriFace[iTgt]->_subMesh->GetId() << " -- "
11235 << ( done ? "DONE" : "FAIL"));
11240 } // namespace VISCOUS_3D; Periodicity part
11243 //================================================================================
11245 * \brief Find FACEs to shrink, that are equally meshed before shrink (i.e. periodic)
11246 * and should remain equal after shrink
11248 //================================================================================
11250 void _ViscousBuilder::findPeriodicFaces()
11252 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11253 // _LayerEdge's inflated along FACE or EDGE)
11254 std::map< TGeomID, std::list< _SolidData* > > id2sdMap;
11255 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11257 _SolidData& data = _sdVec[i];
11258 std::map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11259 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11260 if ( s2s->second.ShapeType() == TopAbs_FACE )
11261 id2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11264 _periodicity.reset( new Periodicity );
11265 _periodicity->_shrinkFaces.resize( id2sdMap.size() );
11267 std::map< TGeomID, std::list< _SolidData* > >::iterator id2sdIt = id2sdMap.begin();
11268 for ( size_t i = 0; i < id2sdMap.size(); ++i, ++id2sdIt )
11270 _SolidData* sd1 = id2sdIt->second.front();
11271 _SolidData* sd2 = id2sdIt->second.back();
11272 _periodicity->_shrinkFaces[ i ].Init( _mesh->GetSubMeshContaining( id2sdIt->first ), sd1, sd2 );
11275 for ( size_t i1 = 0; i1 < _periodicity->_shrinkFaces.size(); ++i1 )
11276 for ( size_t i2 = i1 + 1; i2 < _periodicity->_shrinkFaces.size(); ++i2 )
11278 PeriodicFaces pf( & _periodicity->_shrinkFaces[ i1 ],
11279 & _periodicity->_shrinkFaces[ i2 ]);
11280 if ( pf._shriFace[0]->IsPeriodic( *pf._shriFace[1], pf ))
11282 _periodicity->_periodicFaces.push_back( pf );
11288 //================================================================================
11290 * \brief Shrink 2D mesh on faces to let space for inflated layers
11292 //================================================================================
11294 bool _ViscousBuilder::shrink(_SolidData& theData)
11296 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11297 // _LayerEdge's inflated along FACE or EDGE)
11298 map< TGeomID, list< _SolidData* > > f2sdMap;
11299 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11301 _SolidData& data = _sdVec[i];
11302 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11303 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11304 if ( s2s->second.ShapeType() == TopAbs_FACE && !_shrunkFaces.Contains( s2s->second ))
11306 f2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11308 // Put mesh faces on the shrunk FACE to the proxy sub-mesh to avoid
11309 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
11310 // by StdMeshers_QuadToTriaAdaptor
11311 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
11313 SMESH_ProxyMesh::SubMesh* proxySub =
11314 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
11315 if ( proxySub->NbElements() == 0 )
11317 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11318 while ( fIt->more() )
11320 const SMDS_MeshElement* f = fIt->next();
11321 // as a result 3D algo will use elements from proxySub and not from smDS
11322 proxySub->AddElement( f );
11323 f->setIsMarked( true );
11325 // Mark nodes on the FACE to discriminate them from nodes
11326 // added by addBoundaryElements(); marked nodes are to be smoothed while shrink()
11327 for ( int iN = 0, nbN = f->NbNodes(); iN < nbN; ++iN )
11329 const SMDS_MeshNode* n = f->GetNode( iN );
11330 if ( n->GetPosition()->GetDim() == 2 )
11331 n->setIsMarked( true );
11339 SMESH_MesherHelper helper( *_mesh );
11340 helper.ToFixNodeParameters( true );
11343 map< TGeomID, _Shrinker1D > e2shrMap;
11344 vector< _EdgesOnShape* > subEOS;
11345 vector< _LayerEdge* > lEdges;
11347 // loop on FACEs to shrink mesh on
11348 map< TGeomID, list< _SolidData* > >::iterator f2sd = f2sdMap.begin();
11349 for ( ; f2sd != f2sdMap.end(); ++f2sd )
11351 list< _SolidData* > & dataList = f2sd->second;
11352 if ( dataList.front()->_n2eMap.empty() ||
11353 dataList.back() ->_n2eMap.empty() )
11354 continue; // not yet computed
11355 if ( dataList.front() != &theData &&
11356 dataList.back() != &theData )
11359 _SolidData& data = *dataList.front();
11360 _SolidData* data2 = dataList.size() > 1 ? dataList.back() : 0;
11361 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
11362 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
11363 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
11365 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
11367 _shrunkFaces.Add( F );
11368 helper.SetSubShape( F );
11370 // ==============================
11371 // Use periodicity to move nodes
11372 // ==============================
11374 PeriodicFaces* periodic = _periodicity->GetPeriodic( F, _shrunkFaces );
11375 bool movedByPeriod = ( periodic && periodic->MoveNodes( F ));
11377 // ===========================
11378 // Prepare data for shrinking
11379 // ===========================
11381 // Collect nodes to smooth (they are marked at the beginning of this method)
11382 vector < const SMDS_MeshNode* > smoothNodes;
11384 if ( !movedByPeriod )
11386 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
11387 while ( nIt->more() )
11389 const SMDS_MeshNode* n = nIt->next();
11390 if ( n->isMarked() )
11391 smoothNodes.push_back( n );
11394 // Find out face orientation
11395 double refSign = 1;
11396 const set<TGeomID> ignoreShapes;
11398 if ( !smoothNodes.empty() )
11400 vector<_Simplex> simplices;
11401 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
11402 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of simplex nodes
11403 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
11404 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
11405 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper, refSign ))
11409 // Find _LayerEdge's inflated along F
11413 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
11414 /*complexFirst=*/true); //!!!
11415 while ( subIt->more() )
11417 const TGeomID subID = subIt->next()->GetId();
11418 if ( data._noShrinkShapes.count( subID ))
11420 _EdgesOnShape* eos = data.GetShapeEdges( subID );
11421 if ( !eos || eos->_sWOL.IsNull() )
11422 if ( data2 ) // check in adjacent SOLID
11424 eos = data2->GetShapeEdges( subID );
11425 if ( !eos || eos->_sWOL.IsNull() )
11428 subEOS.push_back( eos );
11430 if ( !movedByPeriod )
11431 for ( size_t i = 0; i < eos->_edges.size(); ++i )
11433 lEdges.push_back( eos->_edges[ i ] );
11434 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
11439 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
11440 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11441 while ( fIt->more() )
11442 if ( const SMDS_MeshElement* f = fIt->next() )
11443 dumpChangeNodes( f );
11446 // Replace source nodes by target nodes in mesh faces to shrink
11447 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
11448 const SMDS_MeshNode* nodes[20];
11449 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11451 _EdgesOnShape& eos = * subEOS[ iS ];
11452 for ( size_t i = 0; i < eos._edges.size(); ++i )
11454 _LayerEdge& edge = *eos._edges[i];
11455 const SMDS_MeshNode* srcNode = edge._nodes[0];
11456 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11457 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
11458 while ( fIt->more() )
11460 const SMDS_MeshElement* f = fIt->next();
11461 if ( !smDS->Contains( f ) || !f->isMarked() )
11463 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
11464 for ( int iN = 0; nIt->more(); ++iN )
11466 const SMDS_MeshNode* n = nIt->next();
11467 nodes[iN] = ( n == srcNode ? tgtNode : n );
11469 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
11470 dumpChangeNodes( f );
11476 // find out if a FACE is concave
11477 const bool isConcaveFace = isConcave( F, helper );
11479 // Create _SmoothNode's on face F
11480 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
11482 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
11483 const bool sortSimplices = isConcaveFace;
11484 for ( size_t i = 0; i < smoothNodes.size(); ++i )
11486 const SMDS_MeshNode* n = smoothNodes[i];
11487 nodesToSmooth[ i ]._node = n;
11488 // src nodes must be already replaced by tgt nodes to have tgt nodes in _simplices
11489 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
11490 // fix up incorrect uv of nodes on the FACE
11491 helper.GetNodeUV( F, n, 0, &isOkUV);
11496 //if ( nodesToSmooth.empty() ) continue;
11498 // Find EDGE's to shrink and set simpices to LayerEdge's
11499 set< _Shrinker1D* > eShri1D;
11501 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11503 _EdgesOnShape& eos = * subEOS[ iS ];
11504 if ( eos.SWOLType() == TopAbs_EDGE )
11506 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
11507 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
11508 if ( !movedByPeriod )
11510 _Shrinker1D& shrinker = e2shrMap[ edgeSM->GetId() ];
11511 eShri1D.insert( & shrinker );
11512 shrinker.AddEdge( eos._edges[0], eos, helper );
11513 // restore params of nodes on EDGE if the EDGE has been already
11514 // shrunk while shrinking other FACE
11515 shrinker.RestoreParams();
11518 for ( size_t i = 0; i < eos._edges.size(); ++i )
11520 _LayerEdge& edge = * eos._edges[i];
11521 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
11523 // additionally mark tgt node; only marked nodes will be used in SetNewLength2d()
11524 // not-marked nodes are those added by refine()
11525 edge._nodes.back()->setIsMarked( true );
11530 bool toFixTria = false; // to improve quality of trias by diagonal swap
11531 if ( isConcaveFace && !movedByPeriod )
11533 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
11534 if ( hasTria != hasQuad ) {
11535 toFixTria = hasTria;
11538 set<int> nbNodesSet;
11539 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11540 while ( fIt->more() && nbNodesSet.size() < 2 )
11541 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
11542 toFixTria = ( *nbNodesSet.begin() == 3 );
11546 // ==================
11547 // Perform shrinking
11548 // ==================
11550 bool shrunk = !movedByPeriod;
11551 int nbBad, shriStep=0, smooStep=0;
11552 _SmoothNode::SmoothType smoothType
11553 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
11554 SMESH_Comment errMsg;
11558 // Move boundary nodes (actually just set new UV)
11559 // -----------------------------------------------
11560 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
11562 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11564 _EdgesOnShape& eos = * subEOS[ iS ];
11565 for ( size_t i = 0; i < eos._edges.size(); ++i )
11567 shrunk |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
11572 // Move nodes on EDGE's
11573 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
11574 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
11575 for ( ; shr != eShri1D.end(); ++shr )
11576 (*shr)->Compute( /*set3D=*/false, helper );
11579 // -----------------
11580 int nbNoImpSteps = 0;
11583 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
11585 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11587 int oldBadNb = nbBad;
11590 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
11591 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
11592 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11594 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
11595 smooTy, /*set3D=*/isConcaveFace);
11597 if ( nbBad < oldBadNb )
11607 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
11608 if ( shriStep > 200 )
11609 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
11610 if ( !errMsg.empty() )
11613 // Fix narrow triangles by swapping diagonals
11614 // ---------------------------------------
11617 set<const SMDS_MeshNode*> usedNodes;
11618 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
11620 // update working data
11621 set<const SMDS_MeshNode*>::iterator n;
11622 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
11624 n = usedNodes.find( nodesToSmooth[ i ]._node );
11625 if ( n != usedNodes.end())
11627 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
11628 nodesToSmooth[ i ]._simplices,
11629 ignoreShapes, NULL,
11630 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
11631 usedNodes.erase( n );
11634 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
11636 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
11637 if ( n != usedNodes.end())
11639 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
11640 lEdges[i]->_simplices,
11642 usedNodes.erase( n );
11646 // TODO: check effect of this additional smooth
11647 // additional laplacian smooth to increase allowed shrink step
11648 // for ( int st = 1; st; --st )
11650 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11651 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11653 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11654 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
11658 } // while ( shrunk )
11660 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
11662 debugMsg( "Re-compute FACE " << f2sd->first << " because " << errMsg );
11665 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
11667 vector< const SMDS_MeshElement* > facesToRm;
11670 facesToRm.reserve( psm->NbElements() );
11671 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
11672 facesToRm.push_back( ite->next() );
11674 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11675 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11678 for ( size_t i = 0; i < facesToRm.size(); ++i )
11679 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
11683 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
11684 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
11685 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11686 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
11687 subEOS[iS]->_edges[i]->_nodes.end() );
11689 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
11690 while ( itn->more() ) {
11691 const SMDS_MeshNode* n = itn->next();
11692 if ( !nodesToKeep.count( n ))
11693 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
11696 _periodicity->ClearPeriodic( F );
11698 // restore position and UV of target nodes
11700 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11701 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11703 _LayerEdge* edge = subEOS[iS]->_edges[i];
11704 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
11705 if ( edge->_pos.empty() ||
11706 edge->Is( _LayerEdge::SHRUNK )) continue;
11707 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
11709 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11710 pos->SetUParameter( edge->_pos[0].X() );
11711 pos->SetVParameter( edge->_pos[0].Y() );
11712 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
11716 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11717 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
11718 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
11720 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11721 dumpMove( tgtNode );
11723 // shrink EDGE sub-meshes and set proxy sub-meshes
11724 UVPtStructVec uvPtVec;
11725 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
11726 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
11728 _Shrinker1D* shr = (*shrIt);
11729 shr->Compute( /*set3D=*/true, helper );
11731 // set proxy mesh of EDGEs w/o layers
11732 map< double, const SMDS_MeshNode* > nodes;
11733 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
11734 // remove refinement nodes
11735 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
11736 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
11737 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
11738 if ( u2n->second == sn0 || u2n->second == sn1 )
11740 while ( u2n->second != tn0 && u2n->second != tn1 )
11742 nodes.erase( nodes.begin(), u2n );
11744 u2n = --nodes.end();
11745 if ( u2n->second == sn0 || u2n->second == sn1 )
11747 while ( u2n->second != tn0 && u2n->second != tn1 )
11749 nodes.erase( ++u2n, nodes.end() );
11751 // set proxy sub-mesh
11752 uvPtVec.resize( nodes.size() );
11753 u2n = nodes.begin();
11754 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
11755 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
11757 uvPtVec[ i ].node = u2n->second;
11758 uvPtVec[ i ].param = u2n->first;
11759 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
11761 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
11762 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11765 // set proxy mesh of EDGEs with layers
11766 vector< _LayerEdge* > edges;
11767 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11769 _EdgesOnShape& eos = * subEOS[ iS ];
11770 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
11771 if ( eos.size() == 0 )
11774 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
11775 data.SortOnEdge( E, eos._edges );
11778 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
11779 if ( !eov->_edges.empty() )
11780 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
11782 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
11784 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
11785 if ( !eov->_edges.empty() )
11786 edges.push_back( eov->_edges[0] ); // on last VERTEX
11788 uvPtVec.resize( edges.size() );
11789 for ( size_t i = 0; i < edges.size(); ++i )
11791 uvPtVec[ i ].node = edges[i]->_nodes.back();
11792 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
11793 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
11795 // if ( edges.empty() )
11797 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
11798 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
11799 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11801 // temporary clear the FACE sub-mesh from faces made by refine()
11802 vector< const SMDS_MeshElement* > elems;
11803 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
11804 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11805 elems.push_back( ite->next() );
11806 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
11807 elems.push_back( ite->next() );
11810 // compute the mesh on the FACE
11811 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
11812 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
11814 // re-fill proxy sub-meshes of the FACE
11815 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11816 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11817 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11818 psm->AddElement( ite->next() );
11821 for ( size_t i = 0; i < elems.size(); ++i )
11822 smDS->AddElement( elems[i] );
11824 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
11825 return error( errMsg );
11827 } // end of re-meshing in case of failed smoothing
11828 else if ( !movedByPeriod )
11830 // No wrongly shaped faces remain; final smooth. Set node XYZ.
11831 bool isStructuredFixed = false;
11832 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
11833 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
11834 if ( !isStructuredFixed )
11836 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
11837 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
11839 for ( int st = 3; st; --st )
11842 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
11843 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
11844 case 3: smoothType = _SmoothNode::ANGULAR; break;
11846 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11847 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11849 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11850 smoothType,/*set3D=*/st==1 );
11855 if ( !getMeshDS()->IsEmbeddedMode() )
11856 // Log node movement
11857 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11859 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
11860 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
11864 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
11865 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
11867 VISCOUS_3D::ToClearSubWithMain( sm, data2->_solid );
11869 } // loop on FACES to shrink mesh on
11872 // Replace source nodes by target nodes in shrunk mesh edges
11874 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
11875 for ( ; e2shr != e2shrMap.end(); ++e2shr )
11876 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
11881 //================================================================================
11883 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
11885 //================================================================================
11887 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
11888 _EdgesOnShape& eos,
11889 SMESH_MesherHelper& helper,
11890 const SMESHDS_SubMesh* /*faceSubMesh*/)
11892 const SMDS_MeshNode* srcNode = edge._nodes[0];
11893 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11895 if ( eos.SWOLType() == TopAbs_FACE )
11897 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
11900 edge.Set( _LayerEdge::SHRUNK );
11901 return srcNode == tgtNode;
11903 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
11904 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
11905 gp_Vec2d uvDir( srcUV, tgtUV );
11906 double uvLen = uvDir.Magnitude();
11908 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
11911 //edge._pos.resize(1);
11912 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
11914 // set UV of source node to target node
11915 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11916 pos->SetUParameter( srcUV.X() );
11917 pos->SetVParameter( srcUV.Y() );
11919 else // _sWOL is TopAbs_EDGE
11921 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
11924 edge.Set( _LayerEdge::SHRUNK );
11925 return srcNode == tgtNode;
11927 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11928 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
11929 if ( !edgeSM || edgeSM->NbElements() == 0 )
11930 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11932 const SMDS_MeshNode* n2 = 0;
11933 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
11934 while ( eIt->more() && !n2 )
11936 const SMDS_MeshElement* e = eIt->next();
11937 if ( !edgeSM->Contains(e)) continue;
11938 n2 = e->GetNode( 0 );
11939 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
11942 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11944 if ( n2 == tgtNode || // for 3D_mesh_GHS3D_01/B1
11945 n2 == edge._nodes[1] ) // bos #20643
11947 // shrunk by other SOLID
11948 edge.Set( _LayerEdge::SHRUNK ); // ???
11952 double uSrc = helper.GetNodeU( E, srcNode, n2 );
11953 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
11954 double u2 = helper.GetNodeU( E, n2, srcNode );
11956 //edge._pos.clear();
11958 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
11960 // tgtNode is located so that it does not make faces with wrong orientation
11961 edge.Set( _LayerEdge::SHRUNK );
11964 //edge._pos.resize(1);
11965 edge._pos[0].SetCoord( U_TGT, uTgt );
11966 edge._pos[0].SetCoord( U_SRC, uSrc );
11967 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
11969 edge._simplices.resize( 1 );
11970 edge._simplices[0]._nPrev = n2;
11972 // set U of source node to the target node
11973 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11974 pos->SetUParameter( uSrc );
11979 //================================================================================
11981 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
11983 //================================================================================
11985 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
11987 if ( edge._nodes.size() == 1 )
11992 const SMDS_MeshNode* srcNode = edge._nodes[0];
11993 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
11994 if ( S.IsNull() ) return;
11998 switch ( S.ShapeType() )
12003 TopLoc_Location loc;
12004 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
12005 if ( curve.IsNull() ) return;
12006 SMDS_EdgePositionPtr ePos = srcNode->GetPosition();
12007 p = curve->Value( ePos->GetUParameter() );
12010 case TopAbs_VERTEX:
12012 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
12017 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
12018 dumpMove( srcNode );
12022 //================================================================================
12024 * \brief Try to fix triangles with high aspect ratio by swapping diagonals
12026 //================================================================================
12028 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
12029 SMESH_MesherHelper& helper,
12032 set<const SMDS_MeshNode*> * involvedNodes)
12034 SMESH::Controls::AspectRatio qualifier;
12035 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
12036 const double maxAspectRatio = is2D ? 4. : 2;
12037 _NodeCoordHelper xyz( F, helper, is2D );
12039 // find bad triangles
12041 vector< const SMDS_MeshElement* > badTrias;
12042 vector< double > badAspects;
12043 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
12044 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12045 while ( fIt->more() )
12047 const SMDS_MeshElement * f = fIt->next();
12048 if ( f->NbCornerNodes() != 3 ) continue;
12049 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
12050 double aspect = qualifier.GetValue( points );
12051 if ( aspect > maxAspectRatio )
12053 badTrias.push_back( f );
12054 badAspects.push_back( aspect );
12059 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
12060 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12061 while ( fIt->more() )
12063 const SMDS_MeshElement * f = fIt->next();
12064 if ( f->NbCornerNodes() == 3 )
12065 dumpChangeNodes( f );
12069 if ( badTrias.empty() )
12072 // find couples of faces to swap diagonal
12074 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
12075 vector< T2Trias > triaCouples;
12077 TIDSortedElemSet involvedFaces, emptySet;
12078 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
12081 double aspRatio [3];
12084 if ( !involvedFaces.insert( badTrias[iTia] ).second )
12086 for ( int iP = 0; iP < 3; ++iP )
12087 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
12089 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
12090 int bestCouple = -1;
12091 for ( int iSide = 0; iSide < 3; ++iSide )
12093 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
12094 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
12095 trias [iSide].first = badTrias[iTia];
12096 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
12098 if (( ! trias[iSide].second ) ||
12099 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
12100 ( ! sm->Contains( trias[iSide].second )))
12103 // aspect ratio of an adjacent tria
12104 for ( int iP = 0; iP < 3; ++iP )
12105 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
12106 double aspectInit = qualifier.GetValue( points2 );
12108 // arrange nodes as after diag-swaping
12109 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
12110 i3 = helper.WrapIndex( i1-1, 3 );
12112 i3 = helper.WrapIndex( i1+1, 3 );
12114 points1( 1+ iSide ) = points2( 1+ i3 );
12115 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
12117 // aspect ratio after diag-swaping
12118 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
12119 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
12122 // prevent inversion of a triangle
12123 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
12124 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
12125 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
12128 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
12129 bestCouple = iSide;
12132 if ( bestCouple >= 0 )
12134 triaCouples.push_back( trias[bestCouple] );
12135 involvedFaces.insert ( trias[bestCouple].second );
12139 involvedFaces.erase( badTrias[iTia] );
12142 if ( triaCouples.empty() )
12147 SMESH_MeshEditor editor( helper.GetMesh() );
12148 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12149 for ( size_t i = 0; i < triaCouples.size(); ++i )
12151 dumpChangeNodes( triaCouples[i].first );
12152 dumpChangeNodes( triaCouples[i].second );
12153 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
12156 if ( involvedNodes )
12157 for ( size_t i = 0; i < triaCouples.size(); ++i )
12159 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
12160 triaCouples[i].first->end_nodes() );
12161 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
12162 triaCouples[i].second->end_nodes() );
12165 // just for debug dump resulting triangles
12166 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12167 for ( size_t i = 0; i < triaCouples.size(); ++i )
12169 dumpChangeNodes( triaCouples[i].first );
12170 dumpChangeNodes( triaCouples[i].second );
12174 //================================================================================
12176 * \brief Move target node to it's final position on the FACE during shrinking
12178 //================================================================================
12180 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
12181 const TopoDS_Face& F,
12182 _EdgesOnShape& eos,
12183 SMESH_MesherHelper& helper )
12186 return false; // already at the target position
12188 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
12190 if ( eos.SWOLType() == TopAbs_FACE )
12192 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
12193 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
12194 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
12195 const double uvLen = tgtUV.Distance( curUV );
12196 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
12198 // Select shrinking step such that not to make faces with wrong orientation.
12199 double stepSize = 1e100;
12200 for ( size_t i = 0; i < _simplices.size(); ++i )
12202 if ( !_simplices[i]._nPrev->isMarked() ||
12203 !_simplices[i]._nNext->isMarked() )
12204 continue; // simplex of quadrangle created by addBoundaryElements()
12206 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
12207 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev, tgtNode );
12208 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext, tgtNode );
12209 gp_XY dirN = uvN2 - uvN1;
12210 double det = uvDir.Crossed( dirN );
12211 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
12212 gp_XY dirN2Cur = curUV - uvN1;
12213 double step = dirN.Crossed( dirN2Cur ) / det;
12215 stepSize = Min( step, stepSize );
12218 if ( uvLen <= stepSize )
12224 else if ( stepSize > 0 )
12226 newUV = curUV + uvDir.XY() * stepSize * kSafe;
12232 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
12233 pos->SetUParameter( newUV.X() );
12234 pos->SetVParameter( newUV.Y() );
12237 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12238 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12239 dumpMove( tgtNode );
12241 if ( surface.IsNull() ) {}
12244 else // _sWOL is TopAbs_EDGE
12246 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
12247 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
12248 SMDS_EdgePositionPtr tgtPos = tgtNode->GetPosition();
12250 const double u2 = helper.GetNodeU( E, n2, tgtNode );
12251 const double uSrc = _pos[0].Coord( U_SRC );
12252 const double lenTgt = _pos[0].Coord( LEN_TGT );
12254 double newU = _pos[0].Coord( U_TGT );
12255 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
12257 Set( _LayerEdge::SHRUNK );
12262 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
12264 tgtPos->SetUParameter( newU );
12266 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
12267 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12268 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12269 dumpMove( tgtNode );
12276 //================================================================================
12278 * \brief Perform smooth on the FACE
12279 * \retval bool - true if the node has been moved
12281 //================================================================================
12283 bool _SmoothNode::Smooth(int& nbBad,
12284 Handle(Geom_Surface)& surface,
12285 SMESH_MesherHelper& helper,
12286 const double refSign,
12290 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
12292 // get uv of surrounding nodes
12293 vector<gp_XY> uv( _simplices.size() );
12294 for ( size_t i = 0; i < _simplices.size(); ++i )
12295 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
12297 // compute new UV for the node
12298 gp_XY newPos (0,0);
12299 if ( how == TFI && _simplices.size() == 4 )
12302 for ( size_t i = 0; i < _simplices.size(); ++i )
12303 if ( _simplices[i]._nOpp )
12304 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
12306 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
12308 newPos = helper.calcTFI ( 0.5, 0.5,
12309 corners[0], corners[1], corners[2], corners[3],
12310 uv[1], uv[2], uv[3], uv[0] );
12312 else if ( how == ANGULAR )
12314 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
12316 else if ( how == CENTROIDAL && _simplices.size() > 3 )
12318 // average centers of diagonals wieghted with their reciprocal lengths
12319 if ( _simplices.size() == 4 )
12321 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
12322 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
12323 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
12327 double sumWeight = 0;
12328 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
12329 for ( int i = 0; i < nb; ++i )
12332 int iTo = i + _simplices.size() - 1;
12333 for ( int j = iFrom; j < iTo; ++j )
12335 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
12336 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
12338 newPos += w * ( uv[i]+uv[i2] );
12341 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
12346 // Laplacian smooth
12347 for ( size_t i = 0; i < _simplices.size(); ++i )
12349 newPos /= _simplices.size();
12352 // count quality metrics (orientation) of triangles around the node
12353 int nbOkBefore = 0;
12354 gp_XY tgtUV = helper.GetNodeUV( face, _node );
12355 for ( size_t i = 0; i < _simplices.size(); ++i )
12356 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
12359 for ( size_t i = 0; i < _simplices.size(); ++i )
12360 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
12362 if ( nbOkAfter < nbOkBefore )
12364 nbBad += _simplices.size() - nbOkBefore;
12368 SMDS_FacePositionPtr pos = _node->GetPosition();
12369 pos->SetUParameter( newPos.X() );
12370 pos->SetVParameter( newPos.Y() );
12377 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
12378 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
12382 nbBad += _simplices.size() - nbOkAfter;
12383 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
12386 //================================================================================
12388 * \brief Computes new UV using angle based smoothing technique
12390 //================================================================================
12392 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
12393 const gp_XY& uvToFix,
12394 const double refSign)
12396 uv.push_back( uv.front() );
12398 vector< gp_XY > edgeDir ( uv.size() );
12399 vector< double > edgeSize( uv.size() );
12400 for ( size_t i = 1; i < edgeDir.size(); ++i )
12402 edgeDir [i-1] = uv[i] - uv[i-1];
12403 edgeSize[i-1] = edgeDir[i-1].Modulus();
12404 if ( edgeSize[i-1] < numeric_limits<double>::min() )
12405 edgeDir[i-1].SetX( 100 );
12407 edgeDir[i-1] /= edgeSize[i-1] * refSign;
12409 edgeDir.back() = edgeDir.front();
12410 edgeSize.back() = edgeSize.front();
12414 double sumSize = 0;
12415 for ( size_t i = 1; i < edgeDir.size(); ++i )
12417 if ( edgeDir[i-1].X() > 1. ) continue;
12419 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
12420 if ( i == edgeDir.size() ) break;
12422 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
12423 gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
12424 gp_XY bisec = norm1 + norm2;
12425 double bisecSize = bisec.Modulus();
12426 if ( bisecSize < numeric_limits<double>::min() )
12428 bisec = -edgeDir[i1] + edgeDir[i];
12429 bisecSize = bisec.Modulus();
12431 bisec /= bisecSize;
12433 gp_XY dirToN = uvToFix - p;
12434 double distToN = dirToN.Modulus();
12435 if ( bisec * dirToN < 0 )
12436 distToN = -distToN;
12438 newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
12440 sumSize += edgeSize[i1] + edgeSize[i];
12442 newPos /= /*nbEdges * */sumSize;
12446 //================================================================================
12448 * \brief Keep a _LayerEdge inflated along the EDGE
12450 //================================================================================
12452 void _Shrinker1D::AddEdge( const _LayerEdge* e,
12453 _EdgesOnShape& eos,
12454 SMESH_MesherHelper& helper )
12457 if ( _nodes.empty() )
12459 _edges[0] = _edges[1] = 0;
12462 // check _LayerEdge
12463 if ( e == _edges[0] || e == _edges[1] || e->_nodes.size() < 2 )
12465 if ( eos.SWOLType() != TopAbs_EDGE )
12466 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12467 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
12468 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12470 // store _LayerEdge
12471 _geomEdge = TopoDS::Edge( eos._sWOL );
12473 BRep_Tool::Range( _geomEdge, f,l );
12474 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
12475 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
12477 // Check if the nodes are already shrunk by another SOLID
12479 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
12480 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
12482 _done = (( tgtNode0 && tgtNode0->NbInverseElements( SMDSAbs_Edge ) == 2 ) ||
12483 ( tgtNode1 && tgtNode1->NbInverseElements( SMDSAbs_Edge ) == 2 ));
12485 _nodes.resize( 1, nullptr );
12489 if ( _nodes.empty() )
12491 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
12492 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
12494 TopLoc_Location loc;
12495 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
12496 GeomAdaptor_Curve aCurve(C, f,l);
12497 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
12499 smIdType nbExpectNodes = eSubMesh->NbNodes();
12500 _initU .reserve( nbExpectNodes );
12501 _normPar.reserve( nbExpectNodes );
12502 _nodes .reserve( nbExpectNodes );
12503 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
12504 while ( nIt->more() )
12506 const SMDS_MeshNode* node = nIt->next();
12508 // skip refinement nodes
12509 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
12510 node == tgtNode0 || node == tgtNode1 )
12512 bool hasMarkedFace = false;
12513 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
12514 while ( fIt->more() && !hasMarkedFace )
12515 hasMarkedFace = fIt->next()->isMarked();
12516 if ( !hasMarkedFace )
12519 _nodes.push_back( node );
12520 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
12521 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
12522 _normPar.push_back( len / totLen );
12527 // remove target node of the _LayerEdge from _nodes
12528 size_t nbFound = 0;
12529 for ( size_t i = 0; i < _nodes.size(); ++i )
12530 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
12531 _nodes[i] = 0, nbFound++;
12532 if ( nbFound == _nodes.size() )
12537 //================================================================================
12539 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
12541 //================================================================================
12543 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
12545 if ( _done || _nodes.empty())
12547 const _LayerEdge* e = _edges[0];
12548 if ( !e ) e = _edges[1];
12551 _done = (( !_edges[0] || _edges[0]->Is( _LayerEdge::SHRUNK )) &&
12552 ( !_edges[1] || _edges[1]->Is( _LayerEdge::SHRUNK )));
12555 if ( set3D || _done )
12557 dumpFunction(SMESH_Comment("shrink1D_E") << helper.GetMeshDS()->ShapeToIndex( _geomEdge )<<
12558 "_F" << helper.GetSubShapeID() );
12559 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
12560 GeomAdaptor_Curve aCurve(C, f,l);
12563 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12565 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12566 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
12568 for ( size_t i = 0; i < _nodes.size(); ++i )
12570 if ( !_nodes[i] ) continue;
12571 double len = totLen * _normPar[i];
12572 GCPnts_AbscissaPoint discret( aCurve, len, f );
12573 if ( !discret.IsDone() )
12574 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
12575 double u = discret.Parameter();
12576 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12577 pos->SetUParameter( u );
12578 gp_Pnt p = C->Value( u );
12579 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
12580 dumpMove( _nodes[i] );
12586 BRep_Tool::Range( _geomEdge, f,l );
12588 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12590 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12592 for ( size_t i = 0; i < _nodes.size(); ++i )
12594 if ( !_nodes[i] ) continue;
12595 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
12596 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12597 pos->SetUParameter( u );
12602 //================================================================================
12604 * \brief Restore initial parameters of nodes on EDGE
12606 //================================================================================
12608 void _Shrinker1D::RestoreParams()
12611 for ( size_t i = 0; i < _nodes.size(); ++i )
12613 if ( !_nodes[i] ) continue;
12614 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12615 pos->SetUParameter( _initU[i] );
12620 //================================================================================
12622 * \brief Replace source nodes by target nodes in shrunk mesh edges
12624 //================================================================================
12626 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
12628 const SMDS_MeshNode* nodes[3];
12629 for ( int i = 0; i < 2; ++i )
12631 if ( !_edges[i] ) continue;
12633 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
12634 if ( !eSubMesh ) return;
12635 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
12636 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
12637 const SMDS_MeshNode* scdNode = _edges[i]->_nodes[1];
12638 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
12639 while ( eIt->more() )
12641 const SMDS_MeshElement* e = eIt->next();
12642 if ( !eSubMesh->Contains( e ) || e->GetNodeIndex( scdNode ) >= 0 )
12644 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
12645 for ( int iN = 0; iN < e->NbNodes(); ++iN )
12647 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
12648 nodes[iN] = ( n == srcNode ? tgtNode : n );
12650 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
12655 //================================================================================
12657 * \brief Setup quadPoints
12659 //================================================================================
12661 _Mapper2D::_Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap )
12663 size_t i, iSize = _quadPoints.iSize = param2ColumnMap.size();
12664 size_t j, jSize = _quadPoints.jSize = param2ColumnMap.begin()->second.size();
12665 if ( _quadPoints.iSize < 3 ||
12666 _quadPoints.jSize < 3 )
12668 _quadPoints.uv_grid.resize( iSize * jSize );
12672 for ( auto & u_columnNodes : param2ColumnMap )
12674 for ( j = 0; j < u_columnNodes.second.size(); ++j )
12675 _quadPoints.UVPt( i, j ).node = u_columnNodes.second[ j ];
12679 // compute x parameter on borders
12680 uvPnt( 0, 0 ).x = 0;
12681 uvPnt( 0, jSize-1 ).x = 0;
12682 gp_Pnt p0, pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12683 gp_Pnt p1, pPrev1 = SMESH_NodeXYZ( uvPnt( 0, jSize-1 ).node );
12684 for ( i = 1; i < iSize; ++i )
12686 p0 = SMESH_NodeXYZ( uvPnt( i, 0 ).node );
12687 p1 = SMESH_NodeXYZ( uvPnt( i, jSize-1 ).node );
12688 uvPnt( i, 0 ).x = uvPnt( i-1, 0 ).x + p0.Distance( pPrev0 );
12689 uvPnt( i, jSize-1 ).x = uvPnt( i-1, jSize-1 ).x + p1.Distance( pPrev1 );
12693 for ( i = 1; i < iSize-1; ++i )
12695 uvPnt( i, 0 ).x /= uvPnt( iSize-1, 0 ).x;
12696 uvPnt( i, jSize-1 ).x /= uvPnt( iSize-1, jSize-1 ).x;
12697 uvPnt( i, 0 ).y = 0;
12698 uvPnt( i, jSize-1 ).y = 1;
12701 // compute y parameter on borders
12702 uvPnt( 0, 0 ).y = 0;
12703 uvPnt( iSize-1, 0 ).y = 0;
12704 pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12705 pPrev1 = SMESH_NodeXYZ( uvPnt( iSize-1, 0 ).node );
12706 for ( j = 1; j < jSize; ++j )
12708 p0 = SMESH_NodeXYZ( uvPnt( 0, j ).node );
12709 p1 = SMESH_NodeXYZ( uvPnt( iSize-1, j ).node );
12710 uvPnt( 0, j ).y = uvPnt( 0, j-1 ).y + p0.Distance( pPrev0 );
12711 uvPnt( iSize-1, j ).y = uvPnt( iSize-1, j-1 ).y + p1.Distance( pPrev1 );
12715 for ( j = 1; j < jSize-1; ++j )
12717 uvPnt( 0, j ).y /= uvPnt( 0, jSize-1 ).y;
12718 uvPnt( iSize-1, j ).y /= uvPnt( iSize-1, jSize-1 ).y;
12719 uvPnt( 0, j ).x = 0;
12720 uvPnt( iSize-1, j ).x = 1;
12723 // compute xy of internal nodes
12724 for ( i = 1; i < iSize-1; ++i )
12726 const double x0 = uvPnt( i, 0 ).x;
12727 const double x1 = uvPnt( i, jSize-1 ).x;
12728 for ( j = 1; j < jSize-1; ++j )
12730 const double y0 = uvPnt( 0, j ).y;
12731 const double y1 = uvPnt( iSize-1, j ).y;
12732 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
12733 double y = y0 + x * (y1 - y0);
12734 uvPnt( i, j ).x = x;
12735 uvPnt( i, j ).y = y;
12739 // replace base nodes with target ones
12740 for ( i = 0; i < iSize; ++i )
12741 for ( j = 0; j < jSize; ++j )
12743 auto n2e = n2eMap.find( uvPnt( i, j ).node );
12744 uvPnt( i, j ).node = n2e->second->_nodes.back();
12750 //================================================================================
12752 * \brief Compute positions of nodes of 2D structured mesh using TFI
12754 //================================================================================
12756 bool _Mapper2D::ComputeNodePositions()
12758 if ( _quadPoints.uv_grid.empty() )
12761 size_t i, iSize = _quadPoints.iSize;
12762 size_t j, jSize = _quadPoints.jSize;
12764 SMESH_NodeXYZ a0 ( uvPnt( 0, 0 ).node );
12765 SMESH_NodeXYZ a1 ( uvPnt( iSize-1, 0 ).node );
12766 SMESH_NodeXYZ a2 ( uvPnt( iSize-1, jSize-1 ).node );
12767 SMESH_NodeXYZ a3 ( uvPnt( 0, jSize-1 ).node );
12769 for ( i = 1; i < iSize-1; ++i )
12771 SMESH_NodeXYZ p0 ( uvPnt( i, 0 ).node );
12772 SMESH_NodeXYZ p2 ( uvPnt( i, jSize-1 ).node );
12773 for ( j = 1; j < jSize-1; ++j )
12775 SMESH_NodeXYZ p1 ( uvPnt( iSize-1, j ).node );
12776 SMESH_NodeXYZ p3 ( uvPnt( 0, j ).node );
12777 double x = uvPnt( i, j ).x;
12778 double y = uvPnt( i, j ).y;
12780 gp_XYZ p = SMESH_MesherHelper::calcTFI( x, y, a0,a1,a2,a3, p0,p1,p2,p3 );
12781 const_cast< SMDS_MeshNode* >( uvPnt( i, j ).node )->setXYZ( p.X(), p.Y(), p.Z() );
12783 dumpMove( uvPnt( i, j ).node );
12789 //================================================================================
12791 * \brief Creates 2D and 1D elements on boundaries of new prisms
12793 //================================================================================
12795 bool _ViscousBuilder::addBoundaryElements(_SolidData& data)
12797 SMESH_MesherHelper helper( *_mesh );
12799 vector< const SMDS_MeshNode* > faceNodes;
12801 //for ( size_t i = 0; i < _sdVec.size(); ++i )
12803 //_SolidData& data = _sdVec[i];
12804 TopTools_IndexedMapOfShape geomEdges;
12805 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
12806 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
12808 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
12809 const TGeomID edgeID = getMeshDS()->ShapeToIndex( E );
12810 if ( data._noShrinkShapes.count( edgeID ))
12813 // Get _LayerEdge's based on E
12815 map< double, const SMDS_MeshNode* > u2nodes;
12816 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
12819 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
12820 TNode2Edge & n2eMap = data._n2eMap;
12821 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
12823 //check if 2D elements are needed on E
12824 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
12825 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
12826 ledges.push_back( n2e->second );
12828 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
12829 continue; // no layers on E
12830 ledges.push_back( n2eMap[ u2n->second ]);
12832 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
12833 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
12834 int nbSharedPyram = 0;
12835 SMDS_ElemIteratorPtr vIt = tgtN1->GetInverseElementIterator(SMDSAbs_Volume);
12836 while ( vIt->more() )
12838 const SMDS_MeshElement* v = vIt->next();
12839 nbSharedPyram += int( v->GetNodeIndex( tgtN0 ) >= 0 );
12841 if ( nbSharedPyram > 1 )
12842 continue; // not free border of the pyramid
12845 faceNodes.push_back( ledges[0]->_nodes[0] );
12846 faceNodes.push_back( ledges[1]->_nodes[0] );
12847 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
12848 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
12850 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
12851 continue; // faces already created
12853 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
12854 ledges.push_back( n2eMap[ u2n->second ]);
12856 // Find out orientation and type of face to create
12858 bool reverse = false, isOnFace;
12861 map< TGeomID, TopoDS_Shape >::iterator e2f = data._shrinkShape2Shape.find( edgeID );
12862 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
12864 F = e2f->second.Oriented( TopAbs_FORWARD );
12865 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
12866 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
12867 reverse = !reverse, F.Reverse();
12868 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
12869 reverse = !reverse;
12871 else if ( !data._ignoreFaceIds.count( e2f->first ))
12873 // find FACE with layers sharing E
12874 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE, &data._solid );
12876 F = *( fIt->next() );
12878 // Find the sub-mesh to add new faces
12879 SMESHDS_SubMesh* sm = 0;
12881 sm = getMeshDS()->MeshElements( F );
12883 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
12885 return error("error in addBoundaryElements()", data._index);
12887 // Find a proxy sub-mesh of the FACE of an adjacent SOLID, which will use the new boundary
12888 // faces for 3D meshing (PAL23414)
12889 SMESHDS_SubMesh* adjSM = 0;
12892 const TGeomID faceID = sm->GetID();
12893 PShapeIteratorPtr soIt = helper.GetAncestors( F, *_mesh, TopAbs_SOLID );
12894 while ( const TopoDS_Shape* solid = soIt->next() )
12895 if ( !solid->IsSame( data._solid ))
12897 size_t iData = _solids.FindIndex( *solid ) - 1;
12898 if ( iData < _sdVec.size() &&
12899 _sdVec[ iData ]._ignoreFaceIds.count( faceID ) &&
12900 _sdVec[ iData ]._shrinkShape2Shape.count( edgeID ) == 0 )
12902 SMESH_ProxyMesh::SubMesh* proxySub =
12903 _sdVec[ iData ]._proxyMesh->getFaceSubM( TopoDS::Face( F ), /*create=*/false);
12904 if ( proxySub && proxySub->NbElements() > 0 )
12911 const int dj1 = reverse ? 0 : 1;
12912 const int dj2 = reverse ? 1 : 0;
12913 vector< const SMDS_MeshElement*> ff; // new faces row
12914 SMESHDS_Mesh* m = getMeshDS();
12915 for ( size_t j = 1; j < ledges.size(); ++j )
12917 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
12918 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
12919 ff.resize( std::max( nn1.size(), nn2.size() ), NULL );
12920 if ( nn1.size() == nn2.size() )
12923 for ( size_t z = 1; z < nn1.size(); ++z )
12924 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12926 for ( size_t z = 1; z < nn1.size(); ++z )
12927 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12929 else if ( nn1.size() == 1 )
12932 for ( size_t z = 1; z < nn2.size(); ++z )
12933 sm->AddElement( ff[z-1] = m->AddFace( nn1[0], nn2[z-1], nn2[z] ));
12935 for ( size_t z = 1; z < nn2.size(); ++z )
12936 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
12941 for ( size_t z = 1; z < nn1.size(); ++z )
12942 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[0], nn1[z] ));
12944 for ( size_t z = 1; z < nn1.size(); ++z )
12945 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
12948 if ( adjSM ) // add faces to a proxy SM of the adjacent SOLID
12950 for ( size_t z = 0; z < ff.size(); ++z )
12952 adjSM->AddElement( ff[ z ]);
12958 for ( int isFirst = 0; isFirst < 2; ++isFirst )
12960 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
12961 _EdgesOnShape* eos = data.GetShapeEdges( edge );
12962 if ( eos && eos->SWOLType() == TopAbs_EDGE )
12964 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
12965 if ( nn.size() < 2 || nn[1]->NbInverseElements( SMDSAbs_Edge ) >= 2 )
12967 helper.SetSubShape( eos->_sWOL );
12968 helper.SetElementsOnShape( true );
12969 for ( size_t z = 1; z < nn.size(); ++z )
12970 helper.AddEdge( nn[z-1], nn[z] );
12974 } // loop on EDGE's
12975 } // loop on _SolidData's