1 // Copyright (C) 2007-2022 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 <Basics_OCCTVersion.hxx>
57 #if OCC_VERSION_LARGE < 0x07070000
58 #include <Adaptor3d_HSurface.hxx>
60 #include <Adaptor3d_Surface.hxx>
63 #include <BRepAdaptor_Curve.hxx>
64 #include <BRepAdaptor_Curve2d.hxx>
65 #include <BRepAdaptor_Surface.hxx>
66 #include <BRepLProp_SLProps.hxx>
67 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
68 #include <BRep_Tool.hxx>
69 #include <Bnd_B2d.hxx>
70 #include <Bnd_B3d.hxx>
72 #include <GCPnts_AbscissaPoint.hxx>
73 #include <GCPnts_TangentialDeflection.hxx>
74 #include <Geom2d_Circle.hxx>
75 #include <Geom2d_Line.hxx>
76 #include <Geom2d_TrimmedCurve.hxx>
77 #include <GeomAdaptor_Curve.hxx>
78 #include <GeomLib.hxx>
79 #include <Geom_Circle.hxx>
80 #include <Geom_Curve.hxx>
81 #include <Geom_Line.hxx>
82 #include <Geom_TrimmedCurve.hxx>
83 #include <Precision.hxx>
84 #include <Standard_ErrorHandler.hxx>
85 #include <Standard_Failure.hxx>
86 #include <TColStd_Array1OfReal.hxx>
88 #include <TopExp_Explorer.hxx>
89 #include <TopTools_IndexedMapOfShape.hxx>
90 #include <TopTools_ListOfShape.hxx>
91 #include <TopTools_MapIteratorOfMapOfShape.hxx>
92 #include <TopTools_MapOfShape.hxx>
94 #include <TopoDS_Edge.hxx>
95 #include <TopoDS_Face.hxx>
96 #include <TopoDS_Vertex.hxx>
98 #include <gp_Cone.hxx>
99 #include <gp_Sphere.hxx>
100 #include <gp_Vec.hxx>
108 #include <unordered_map>
114 //#define __NOT_INVALIDATE_BAD_SMOOTH
115 //#define __NODES_AT_POS
118 #define INCREMENTAL_SMOOTH // smooth only if min angle is too small
119 #define BLOCK_INFLATION // of individual _LayerEdge's
120 #define OLD_NEF_POLYGON
124 //================================================================================
129 enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
131 const double theMinSmoothCosin = 0.1;
132 const double theSmoothThickToElemSizeRatio = 0.6;
133 const double theMinSmoothTriaAngle = 30;
134 const double theMinSmoothQuadAngle = 45;
136 // what part of thickness is allowed till intersection
137 // (defined by SALOME_TESTS/Grids/smesh/viscous_layers_00/A5)
138 const double theThickToIntersection = 1.5;
140 bool needSmoothing( double cosin, double tgtThick, double elemSize )
142 return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
144 double getSmoothingThickness( double cosin, double elemSize )
146 return theSmoothThickToElemSizeRatio * elemSize / cosin;
150 * \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
151 * It is stored in a SMESH_subMesh of the SOLID as SMESH_subMeshEventListenerData
153 struct _MeshOfSolid : public SMESH_ProxyMesh,
154 public SMESH_subMeshEventListenerData
156 bool _n2nMapComputed;
157 SMESH_ComputeErrorPtr _warning;
159 _MeshOfSolid( SMESH_Mesh* mesh)
160 :SMESH_subMeshEventListenerData( /*isDeletable=*/true),_n2nMapComputed(false)
162 SMESH_ProxyMesh::setMesh( *mesh );
165 // returns submesh for a geom face
166 SMESH_ProxyMesh::SubMesh* getFaceSubM(const TopoDS_Face& F, bool create=false)
168 TGeomID i = SMESH_ProxyMesh::shapeIndex(F);
169 return create ? SMESH_ProxyMesh::getProxySubMesh(i) : findProxySubMesh(i);
171 void setNode2Node(const SMDS_MeshNode* srcNode,
172 const SMDS_MeshNode* proxyNode,
173 const SMESH_ProxyMesh::SubMesh* subMesh)
175 SMESH_ProxyMesh::setNode2Node( srcNode,proxyNode,subMesh);
178 //--------------------------------------------------------------------------------
180 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
181 * It is used to clear an inferior dim sub-meshes modified by viscous layers
183 class _ShrinkShapeListener : SMESH_subMeshEventListener
185 _ShrinkShapeListener()
186 : SMESH_subMeshEventListener(/*isDeletable=*/false,
187 "StdMeshers_ViscousLayers::_ShrinkShapeListener") {}
189 static SMESH_subMeshEventListener* Get() { static _ShrinkShapeListener l; return &l; }
190 virtual void ProcessEvent(const int event,
192 SMESH_subMesh* solidSM,
193 SMESH_subMeshEventListenerData* data,
194 const SMESH_Hypothesis* hyp)
196 if ( SMESH_subMesh::COMPUTE_EVENT == eventType && solidSM->IsEmpty() && data )
198 SMESH_subMeshEventListener::ProcessEvent(event,eventType,solidSM,data,hyp);
202 //--------------------------------------------------------------------------------
204 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
205 * It is used to store data computed by _ViscousBuilder for a sub-mesh and to
206 * delete the data as soon as it has been used
208 class _ViscousListener : SMESH_subMeshEventListener
211 SMESH_subMeshEventListener(/*isDeletable=*/false,
212 "StdMeshers_ViscousLayers::_ViscousListener") {}
213 static SMESH_subMeshEventListener* Get() { static _ViscousListener l; return &l; }
215 virtual void ProcessEvent(const int event,
217 SMESH_subMesh* subMesh,
218 SMESH_subMeshEventListenerData* /*data*/,
219 const SMESH_Hypothesis* /*hyp*/)
221 if (( SMESH_subMesh::COMPUTE_EVENT == eventType ) &&
222 ( SMESH_subMesh::CHECK_COMPUTE_STATE != event &&
223 SMESH_subMesh::SUBMESH_COMPUTED != event ))
225 // delete SMESH_ProxyMesh containing temporary faces
226 subMesh->DeleteEventListener( this );
229 // Finds or creates proxy mesh of the solid
230 static _MeshOfSolid* GetSolidMesh(SMESH_Mesh* mesh,
231 const TopoDS_Shape& solid,
234 if ( !mesh ) return 0;
235 SMESH_subMesh* sm = mesh->GetSubMesh(solid);
236 _MeshOfSolid* data = (_MeshOfSolid*) sm->GetEventListenerData( Get() );
237 if ( !data && toCreate )
239 data = new _MeshOfSolid(mesh);
240 data->mySubMeshes.push_back( sm ); // to find SOLID by _MeshOfSolid
241 sm->SetEventListener( Get(), data, sm );
245 // Removes proxy mesh of the solid
246 static void RemoveSolidMesh(SMESH_Mesh* mesh, const TopoDS_Shape& solid)
248 mesh->GetSubMesh(solid)->DeleteEventListener( _ViscousListener::Get() );
252 //================================================================================
254 * \brief sets a sub-mesh event listener to clear sub-meshes of sub-shapes of
255 * the main shape when sub-mesh of the main shape is cleared,
256 * for example to clear sub-meshes of FACEs when sub-mesh of a SOLID
259 //================================================================================
261 void ToClearSubWithMain( SMESH_subMesh* sub, const TopoDS_Shape& main)
263 SMESH_subMesh* mainSM = sub->GetFather()->GetSubMesh( main );
264 SMESH_subMeshEventListenerData* data =
265 mainSM->GetEventListenerData( _ShrinkShapeListener::Get());
268 if ( find( data->mySubMeshes.begin(), data->mySubMeshes.end(), sub ) ==
269 data->mySubMeshes.end())
270 data->mySubMeshes.push_back( sub );
274 data = SMESH_subMeshEventListenerData::MakeData( /*dependent=*/sub );
275 sub->SetEventListener( _ShrinkShapeListener::Get(), data, /*whereToListenTo=*/mainSM );
279 //--------------------------------------------------------------------------------
281 * \brief Simplex (triangle or tetrahedron) based on 1 (tria) or 2 (tet) nodes of
282 * _LayerEdge and 2 nodes of the mesh surface beening smoothed.
283 * The class is used to check validity of face or volumes around a smoothed node;
284 * it stores only 2 nodes as the other nodes are stored by _LayerEdge.
288 const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
289 const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
290 _Simplex(const SMDS_MeshNode* nPrev=0,
291 const SMDS_MeshNode* nNext=0,
292 const SMDS_MeshNode* nOpp=0)
293 : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
294 bool IsForward(const gp_XYZ* pntSrc, const gp_XYZ* pntTgt, double& vol) const
296 const double M[3][3] =
297 {{ _nNext->X() - pntSrc->X(), _nNext->Y() - pntSrc->Y(), _nNext->Z() - pntSrc->Z() },
298 { pntTgt->X() - pntSrc->X(), pntTgt->Y() - pntSrc->Y(), pntTgt->Z() - pntSrc->Z() },
299 { _nPrev->X() - pntSrc->X(), _nPrev->Y() - pntSrc->Y(), _nPrev->Z() - pntSrc->Z() }};
300 vol = ( + M[0][0] * M[1][1] * M[2][2]
301 + M[0][1] * M[1][2] * M[2][0]
302 + M[0][2] * M[1][0] * M[2][1]
303 - M[0][0] * M[1][2] * M[2][1]
304 - M[0][1] * M[1][0] * M[2][2]
305 - M[0][2] * M[1][1] * M[2][0]);
308 bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ& pTgt, double& vol) const
310 SMESH_TNodeXYZ pSrc( nSrc );
311 return IsForward( &pSrc, &pTgt, vol );
313 bool IsForward(const gp_XY& tgtUV,
314 const SMDS_MeshNode* smoothedNode,
315 const TopoDS_Face& face,
316 SMESH_MesherHelper& helper,
317 const double refSign) const
319 gp_XY prevUV = helper.GetNodeUV( face, _nPrev, smoothedNode );
320 gp_XY nextUV = helper.GetNodeUV( face, _nNext, smoothedNode );
321 gp_Vec2d v1( tgtUV, prevUV ), v2( tgtUV, nextUV );
323 return d*refSign > 1e-100;
325 bool IsMinAngleOK( const gp_XYZ& pTgt, double& minAngle ) const
327 SMESH_TNodeXYZ pPrev( _nPrev ), pNext( _nNext );
328 if ( !_nOpp ) // triangle
330 gp_Vec tp( pPrev - pTgt ), pn( pNext - pPrev ), nt( pTgt - pNext );
331 double tp2 = tp.SquareMagnitude();
332 double pn2 = pn.SquareMagnitude();
333 double nt2 = nt.SquareMagnitude();
335 if ( tp2 < pn2 && tp2 < nt2 )
336 minAngle = ( nt * -pn ) * ( nt * -pn ) / nt2 / pn2;
337 else if ( pn2 < nt2 )
338 minAngle = ( tp * -nt ) * ( tp * -nt ) / tp2 / nt2;
340 minAngle = ( pn * -tp ) * ( pn * -tp ) / pn2 / tp2;
342 static double theMaxCos2 = ( Cos( theMinSmoothTriaAngle * M_PI / 180. ) *
343 Cos( theMinSmoothTriaAngle * M_PI / 180. ));
344 return minAngle < theMaxCos2;
348 SMESH_TNodeXYZ pOpp( _nOpp );
349 gp_Vec tp( pPrev - pTgt ), po( pOpp - pPrev ), on( pNext - pOpp), nt( pTgt - pNext );
350 double tp2 = tp.SquareMagnitude();
351 double po2 = po.SquareMagnitude();
352 double on2 = on.SquareMagnitude();
353 double nt2 = nt.SquareMagnitude();
354 minAngle = Max( Max((( tp * -nt ) * ( tp * -nt ) / tp2 / nt2 ),
355 (( po * -tp ) * ( po * -tp ) / po2 / tp2 )),
356 Max((( on * -po ) * ( on * -po ) / on2 / po2 ),
357 (( nt * -on ) * ( nt * -on ) / nt2 / on2 )));
359 static double theMaxCos2 = ( Cos( theMinSmoothQuadAngle * M_PI / 180. ) *
360 Cos( theMinSmoothQuadAngle * M_PI / 180. ));
361 return minAngle < theMaxCos2;
364 bool IsNeighbour(const _Simplex& other) const
366 return _nPrev == other._nNext || _nNext == other._nPrev;
368 bool Includes( const SMDS_MeshNode* node ) const { return _nPrev == node || _nNext == node; }
369 static void GetSimplices( const SMDS_MeshNode* node,
370 vector<_Simplex>& simplices,
371 const set<TGeomID>& ingnoreShapes,
372 const _SolidData* dataToCheckOri = 0,
373 const bool toSort = false);
374 static void SortSimplices(vector<_Simplex>& simplices);
376 //--------------------------------------------------------------------------------
378 * Structure used to take into account surface curvature while smoothing
383 double _k; // factor to correct node smoothed position
384 double _h2lenRatio; // avgNormProj / (2*avgDist)
385 gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
387 static _Curvature* New( double avgNormProj, double avgDist );
388 double lenDelta(double len) const { return _k * ( _r + len ); }
389 double lenDeltaByDist(double dist) const { return dist * _h2lenRatio; }
391 //--------------------------------------------------------------------------------
395 struct _EdgesOnShape;
398 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
400 //--------------------------------------------------------------------------------
402 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
403 * and a node of the most internal layer (_nodes.back())
407 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
409 vector< const SMDS_MeshNode*> _nodes;
411 gp_XYZ _normal; // to boundary of solid
412 vector<gp_XYZ> _pos; // points computed during inflation
413 double _len; // length achieved with the last inflation step
414 double _maxLen; // maximal possible length
415 double _cosin; // of angle (_normal ^ surface)
416 double _minAngle; // of _simplices
417 double _lenFactor; // to compute _len taking _cosin into account
420 // simplices connected to the source node (_nodes[0]);
421 // used for smoothing and quality check of _LayerEdge's based on the FACE
422 vector<_Simplex> _simplices;
423 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
424 PSmooFun _smooFunction; // smoothing function
425 _Curvature* _curvature;
426 // data for smoothing of _LayerEdge's based on the EDGE
427 _2NearEdges* _2neibors;
429 enum EFlags { TO_SMOOTH = 0x0000001,
430 MOVED = 0x0000002, // set by _neibors[i]->SetNewLength()
431 SMOOTHED = 0x0000004, // set by _LayerEdge::Smooth()
432 DIFFICULT = 0x0000008, // near concave VERTEX
433 ON_CONCAVE_FACE = 0x0000010,
434 BLOCKED = 0x0000020, // not to inflate any more
435 INTERSECTED = 0x0000040, // close intersection with a face found
436 NORMAL_UPDATED = 0x0000080,
437 UPD_NORMAL_CONV = 0x0000100, // to update normal on boundary of concave FACE
438 MARKED = 0x0000200, // local usage
439 MULTI_NORMAL = 0x0000400, // a normal is invisible by some of surrounding faces
440 NEAR_BOUNDARY = 0x0000800, // is near FACE boundary forcing smooth
441 SMOOTHED_C1 = 0x0001000, // is on _eosC1
442 DISTORTED = 0x0002000, // was bad before smoothing
443 RISKY_SWOL = 0x0004000, // SWOL is parallel to a source FACE
444 SHRUNK = 0x0008000, // target node reached a tgt position while shrink()
445 UNUSED_FLAG = 0x0100000 // to add user flags after
447 bool Is ( int flag ) const { return _flags & flag; }
448 void Set ( int flag ) { _flags |= flag; }
449 void Unset( int flag ) { _flags &= ~flag; }
450 std::string DumpFlags() const; // debug
452 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
453 bool SetNewLength2d( Handle(Geom_Surface)& surface,
454 const TopoDS_Face& F,
456 SMESH_MesherHelper& helper );
457 bool UpdatePositionOnSWOL( SMDS_MeshNode* n,
460 SMESH_MesherHelper& helper );
461 void SetDataByNeighbors( const SMDS_MeshNode* n1,
462 const SMDS_MeshNode* n2,
463 const _EdgesOnShape& eos,
464 SMESH_MesherHelper& helper);
465 void Block( _SolidData& data );
466 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
467 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
468 const TNode2Edge& n2eMap);
469 void SmoothPos( const vector< double >& segLen, const double tol );
470 int GetSmoothedPos( const double tol );
471 int Smooth(const int step, const bool isConcaveFace, bool findBest);
472 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
473 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
474 void SmoothWoCheck();
475 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
476 const TopoDS_Face& F,
477 SMESH_MesherHelper& helper);
478 void MoveNearConcaVer( const _EdgesOnShape* eov,
479 const _EdgesOnShape* eos,
481 vector< _LayerEdge* > & badSmooEdges);
482 bool FindIntersection( SMESH_ElementSearcher& searcher,
484 const double& epsilon,
486 const SMDS_MeshElement** face = 0);
487 bool SegTriaInter( const gp_Ax1& lastSegment,
492 const double& epsilon) const;
493 bool SegTriaInter( const gp_Ax1& lastSegment,
494 const SMDS_MeshNode* n0,
495 const SMDS_MeshNode* n1,
496 const SMDS_MeshNode* n2,
498 const double& epsilon) const
499 { return SegTriaInter( lastSegment,
500 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
503 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
504 gp_XYZ PrevCheckPos( _EdgesOnShape* eos=0 ) const;
505 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
506 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which=-1 ) const;
507 bool IsOnEdge() const { return _2neibors; }
508 bool IsOnFace() const { return ( _nodes[0]->GetPosition()->GetDim() == 2 ); }
509 int BaseShapeDim() const { return _nodes[0]->GetPosition()->GetDim(); }
510 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
511 double SetCosin( double cosin );
512 void SetNormal( const gp_XYZ& n ) { _normal = n; }
513 void SetMaxLen( double l ) { _maxLen = l; }
514 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
515 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
516 void SetSmooLen( double len ) { // set _len at which smoothing is needed
517 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
519 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
521 gp_XYZ smoothLaplacian();
522 gp_XYZ smoothAngular();
523 gp_XYZ smoothLengthWeighted();
524 gp_XYZ smoothCentroidal();
525 gp_XYZ smoothNefPolygon();
527 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
528 static const int theNbSmooFuns = FUN_NB;
529 static PSmooFun _funs[theNbSmooFuns];
530 static const char* _funNames[theNbSmooFuns+1];
531 int smooFunID( PSmooFun fun=0) const;
533 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
534 &_LayerEdge::smoothLengthWeighted,
535 &_LayerEdge::smoothCentroidal,
536 &_LayerEdge::smoothNefPolygon,
537 &_LayerEdge::smoothAngular };
538 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
546 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
548 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
549 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
552 //--------------------------------------------------------------------------------
554 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
558 gp_XY _pos, _dir, _inNorm;
559 bool IsOut( const gp_XY p, const double tol ) const
561 return _inNorm * ( p - _pos ) < -tol;
563 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
565 //const double eps = 1e-10;
566 double D = _dir.Crossed( hp._dir );
567 if ( fabs(D) < std::numeric_limits<double>::min())
569 gp_XY vec21 = _pos - hp._pos;
570 double u = hp._dir.Crossed( vec21 ) / D;
571 intPnt = _pos + _dir * u;
575 //--------------------------------------------------------------------------------
577 * Structure used to smooth a _LayerEdge based on an EDGE.
581 double _wgt [2]; // weights of _nodes
582 _LayerEdge* _edges[2];
584 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
587 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
588 ~_2NearEdges(){ delete _plnNorm; }
589 const SMDS_MeshNode* tgtNode(bool is2nd) {
590 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
592 const SMDS_MeshNode* srcNode(bool is2nd) {
593 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
596 std::swap( _wgt [0], _wgt [1] );
597 std::swap( _edges[0], _edges[1] );
599 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
600 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
602 bool include( const _LayerEdge* e ) {
603 return ( _edges[0] == e || _edges[1] == e );
608 //--------------------------------------------------------------------------------
610 * \brief Layers parameters got by averaging several hypotheses
614 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
615 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
619 void Add( const StdMeshers_ViscousLayers* hyp )
624 _nbLayers = hyp->GetNumberLayers();
625 //_thickness += hyp->GetTotalThickness();
626 _thickness = Max( _thickness, hyp->GetTotalThickness() );
627 _stretchFactor += hyp->GetStretchFactor();
628 _method = hyp->GetMethod();
629 if ( _groupName.empty() )
630 _groupName = hyp->GetGroupName();
633 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
634 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
635 int GetNumberLayers() const { return _nbLayers; }
636 int GetMethod() const { return _method; }
637 bool ToCreateGroup() const { return !_groupName.empty(); }
638 const std::string& GetGroupName() const { return _groupName; }
640 double Get1stLayerThickness( double realThickness = 0.) const
642 const double T = ( realThickness > 0 ) ? realThickness : GetTotalThickness();
643 const double f = GetStretchFactor();
644 const int N = GetNumberLayers();
645 const double fPowN = pow( f, N );
647 if ( fPowN - 1 <= numeric_limits<double>::min() )
650 h0 = T * ( f - 1 )/( fPowN - 1 );
654 bool UseSurfaceNormal() const
655 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
656 bool ToSmooth() const
657 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
658 bool IsOffsetMethod() const
659 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
661 bool operator==( const AverageHyp& other ) const
663 return ( _nbLayers == other._nbLayers &&
664 _method == other._method &&
665 Equals( GetTotalThickness(), other.GetTotalThickness() ) &&
666 Equals( GetStretchFactor(), other.GetStretchFactor() ));
668 static bool Equals( double v1, double v2 ) { return Abs( v1 - v2 ) < 0.01 * ( v1 + v2 ); }
671 int _nbLayers, _nbHyps, _method;
672 double _thickness, _stretchFactor;
673 std::string _groupName;
676 //--------------------------------------------------------------------------------
678 * \brief _LayerEdge's on a shape and other shape data
682 vector< _LayerEdge* > _edges;
686 SMESH_subMesh * _subMesh;
687 // face or edge w/o layer along or near which _edges are inflated
689 bool _isRegularSWOL; // w/o singularities
690 // averaged StdMeshers_ViscousLayers parameters
693 _Smoother1D* _edgeSmoother;
694 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
695 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
697 typedef std::unordered_map< const SMDS_MeshElement*, gp_XYZ > TFace2NormMap;
698 TFace2NormMap _faceNormals; // if _shape is FACE
699 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
701 Handle(ShapeAnalysis_Surface) _offsetSurf;
702 _LayerEdge* _edgeForOffset;
704 _Mapper2D* _mapper2D;
706 _SolidData* _data; // parent SOLID
708 _LayerEdge* operator[](size_t i) const { return (_LayerEdge*) _edges[i]; }
709 size_t size() const { return _edges.size(); }
710 TopAbs_ShapeEnum ShapeType() const
711 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
712 TopAbs_ShapeEnum SWOLType() const
713 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
714 bool HasC1( const _EdgesOnShape* other ) const
715 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
716 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
717 _SolidData& GetData() const { return *_data; }
718 char ShapeTypeLetter() const
719 { switch ( ShapeType() ) { case TopAbs_FACE: return 'F'; case TopAbs_EDGE: return 'E';
720 case TopAbs_VERTEX: return 'V'; default: return 'S'; }}
722 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0), _mapper2D(0) {}
726 //--------------------------------------------------------------------------------
728 * \brief Convex FACE whose radius of curvature is less than the thickness of
729 * layers. It is used to detect distortion of prisms based on a convex
730 * FACE and to update normals to enable further increasing the thickness
736 // edges whose _simplices are used to detect prism distortion
737 vector< _LayerEdge* > _simplexTestEdges;
739 // map a sub-shape to _SolidData::_edgesOnShape
740 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
744 bool _normalsFixedOnBorders; // used in putOnOffsetSurface()
746 double GetMaxCurvature( _SolidData& data,
748 BRepLProp_SLProps& surfProp,
749 SMESH_MesherHelper& helper);
751 bool GetCenterOfCurvature( _LayerEdge* ledge,
752 BRepLProp_SLProps& surfProp,
753 SMESH_MesherHelper& helper,
754 gp_Pnt & center ) const;
755 bool CheckPrisms() const;
758 //--------------------------------------------------------------------------------
760 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
761 * at inflation up to the full thickness. A detected collision
762 * is fixed in updateNormals()
764 struct _CollisionEdges
767 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
768 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
769 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
772 //--------------------------------------------------------------------------------
774 * \brief Data of a SOLID
778 typedef const StdMeshers_ViscousLayers* THyp;
780 TopTools_MapOfShape _before; // SOLIDs to be computed before _solid
781 TGeomID _index; // SOLID id
782 _MeshOfSolid* _proxyMesh;
785 list< TopoDS_Shape > _hypShapes;
786 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
787 set< TGeomID > _reversedFaceIds;
788 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
790 double _stepSize, _stepSizeCoeff, _geomSize;
791 const SMDS_MeshNode* _stepSizeNodes[2];
793 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
795 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
796 map< TGeomID, TNode2Edge* > _s2neMap;
797 // _LayerEdge's with underlying shapes
798 vector< _EdgesOnShape > _edgesOnShape;
800 // key: an ID of shape (EDGE or VERTEX) shared by a FACE with
801 // layers and a FACE w/o layers
802 // value: the shape (FACE or EDGE) to shrink mesh on.
803 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
804 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
806 // Convex FACEs whose radius of curvature is less than the thickness of layers
807 map< TGeomID, _ConvexFace > _convexFaces;
809 // shapes (EDGEs and VERTEXes) shrink from which is forbidden due to collisions with
810 // the adjacent SOLID
811 set< TGeomID > _noShrinkShapes;
813 int _nbShapesToSmooth;
815 vector< _CollisionEdges > _collisionEdges;
816 set< TGeomID > _concaveFaces;
818 double _maxThickness; // of all _hyps
819 double _minThickness; // of all _hyps
821 double _epsilon; // precision for SegTriaInter()
823 SMESH_MesherHelper* _helper;
825 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
827 :_solid(s), _proxyMesh(m), _done(false),_helper(0) {}
828 ~_SolidData() { delete _helper; _helper = 0; }
830 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
831 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
833 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
834 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
835 return id2face == _convexFaces.end() ? 0 : & id2face->second;
837 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
838 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
839 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
840 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
842 SMESH_MesherHelper& GetHelper() const { return *_helper; }
844 void UnmarkEdges( int flag = _LayerEdge::MARKED ) {
845 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
846 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
847 _edgesOnShape[i]._edges[j]->Unset( flag );
849 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
850 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
852 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
854 //--------------------------------------------------------------------------------
856 * \brief Offset plane used in getNormalByOffset()
862 int _faceIndexNext[2];
863 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
866 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
868 void ComputeIntersectionLine( _OffsetPlane& pln,
869 const TopoDS_Edge& E,
870 const TopoDS_Vertex& V );
871 gp_XYZ GetCommonPoint(bool& isFound, const TopoDS_Vertex& V) const;
872 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
874 //--------------------------------------------------------------------------------
876 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
878 struct _CentralCurveOnEdge
881 vector< gp_Pnt > _curvaCenters;
882 vector< _LayerEdge* > _ledges;
883 vector< gp_XYZ > _normals; // new normal for each of _ledges
884 vector< double > _segLength2;
887 TopoDS_Face _adjFace;
888 bool _adjFaceToSmooth;
890 void Append( const gp_Pnt& center, _LayerEdge* ledge )
892 if ( ledge->Is( _LayerEdge::MULTI_NORMAL ))
894 if ( _curvaCenters.size() > 0 )
895 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
896 _curvaCenters.push_back( center );
897 _ledges.push_back( ledge );
898 _normals.push_back( ledge->_normal );
900 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
901 void SetShapes( const TopoDS_Edge& edge,
902 const _ConvexFace& convFace,
904 SMESH_MesherHelper& helper);
906 //--------------------------------------------------------------------------------
908 * \brief Data of node on a shrinked FACE
912 const SMDS_MeshNode* _node;
913 vector<_Simplex> _simplices; // for quality check
915 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
917 bool Smooth(int& badNb,
918 Handle(Geom_Surface)& surface,
919 SMESH_MesherHelper& helper,
920 const double refSign,
924 gp_XY computeAngularPos(vector<gp_XY>& uv,
925 const gp_XY& uvToFix,
926 const double refSign );
930 //--------------------------------------------------------------------------------
932 * \brief Builder of viscous layers
934 class _ViscousBuilder
939 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
940 const TopoDS_Shape& shape);
941 // check validity of hypotheses
942 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
943 const TopoDS_Shape& shape );
945 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
946 void RestoreListeners();
948 // computes SMESH_ProxyMesh::SubMesh::_n2n;
949 bool MakeN2NMap( _MeshOfSolid* pm );
953 bool findSolidsWithLayers(const bool checkFaceMesh=true);
954 bool setBefore( _SolidData& solidBefore, _SolidData& solidAfter );
955 bool findFacesWithLayers(const bool onlyWith=false);
956 void findPeriodicFaces();
957 void getIgnoreFaces(const TopoDS_Shape& solid,
958 const StdMeshers_ViscousLayers* hyp,
959 const TopoDS_Shape& hypShape,
960 set<TGeomID>& ignoreFaces);
961 int makeEdgesOnShape();
962 bool makeLayer(_SolidData& data);
963 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
964 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
965 SMESH_MesherHelper& helper, _SolidData& data);
966 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
967 const TopoDS_Face& face,
968 SMESH_MesherHelper& helper,
970 bool shiftInside=false);
971 bool getFaceNormalAtSingularity(const gp_XY& uv,
972 const TopoDS_Face& face,
973 SMESH_MesherHelper& helper,
975 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
976 gp_XYZ getNormalByOffset( _LayerEdge* edge,
977 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
979 bool lastNoOffset = false);
980 bool findNeiborsOnEdge(const _LayerEdge* edge,
981 const SMDS_MeshNode*& n1,
982 const SMDS_MeshNode*& n2,
985 void findSimplexTestEdges( _SolidData& data,
986 vector< vector<_LayerEdge*> >& edgesByGeom);
987 void computeGeomSize( _SolidData& data );
988 bool findShapesToSmooth( _SolidData& data);
989 void limitStepSizeByCurvature( _SolidData& data );
990 void limitStepSize( _SolidData& data,
991 const SMDS_MeshElement* face,
992 const _LayerEdge* maxCosinEdge );
993 void limitStepSize( _SolidData& data, const double minSize);
994 bool inflate(_SolidData& data);
995 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
996 int invalidateBadSmooth( _SolidData& data,
997 SMESH_MesherHelper& helper,
998 vector< _LayerEdge* >& badSmooEdges,
999 vector< _EdgesOnShape* >& eosC1,
1000 const int infStep );
1001 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
1002 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep,
1003 vector< _EdgesOnShape* >& eosC1,
1004 int smooStep=0, int moveAll=false );
1005 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
1006 void findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
1008 SMESH_MesherHelper& helper );
1009 void limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper );
1010 void limitMaxLenByCurvature( _LayerEdge* e1, _LayerEdge* e2,
1011 _EdgesOnShape& eos1, _EdgesOnShape& eos2,
1012 const bool isSmoothable );
1013 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
1014 bool updateNormalsOfConvexFaces( _SolidData& data,
1015 SMESH_MesherHelper& helper,
1017 void updateNormalsOfC1Vertices( _SolidData& data );
1018 bool updateNormalsOfSmoothed( _SolidData& data,
1019 SMESH_MesherHelper& helper,
1021 const double stepSize );
1022 bool isNewNormalOk( _SolidData& data,
1024 const gp_XYZ& newNormal);
1025 bool refine(_SolidData& data);
1026 bool shrink(_SolidData& data);
1027 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
1028 SMESH_MesherHelper& helper,
1029 const SMESHDS_SubMesh* faceSubMesh );
1030 void restoreNoShrink( _LayerEdge& edge ) const;
1031 void fixBadFaces(const TopoDS_Face& F,
1032 SMESH_MesherHelper& helper,
1035 set<const SMDS_MeshNode*> * involvedNodes=NULL);
1036 bool addBoundaryElements(_SolidData& data);
1038 bool error( const string& text, int solidID=-1 );
1039 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
1042 void makeGroupOfLE();
1045 SMESH_ComputeErrorPtr _error;
1047 vector< _SolidData > _sdVec;
1048 TopTools_IndexedMapOfShape _solids; // to find _SolidData by a solid
1049 TopTools_MapOfShape _shrunkFaces;
1050 std::unique_ptr<Periodicity> _periodicity;
1055 //--------------------------------------------------------------------------------
1057 * \brief Shrinker of nodes on the EDGE
1061 TopoDS_Edge _geomEdge;
1062 vector<double> _initU;
1063 vector<double> _normPar;
1064 vector<const SMDS_MeshNode*> _nodes;
1065 const _LayerEdge* _edges[2];
1068 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
1069 void Compute(bool set3D, SMESH_MesherHelper& helper);
1070 void RestoreParams();
1071 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
1072 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
1073 const SMDS_MeshNode* TgtNode( bool is2nd ) const
1074 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
1075 const SMDS_MeshNode* SrcNode( bool is2nd ) const
1076 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
1078 //--------------------------------------------------------------------------------
1080 * \brief Smoother of _LayerEdge's on EDGE.
1084 struct OffPnt // point of the offsetted EDGE
1086 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1087 double _len; // length reached at previous inflation step
1088 double _param; // on EDGE
1089 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1090 gp_XYZ _edgeDir;// EDGE tangent at _param
1091 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1093 vector< OffPnt > _offPoints;
1094 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1095 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1096 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1097 gp_XYZ _edgeDir[2]; // tangent at VERTEXes
1098 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1099 _EdgesOnShape& _eos;
1100 double _curveLen; // length of the EDGE
1101 std::pair<int,int> _eToSmooth[2]; // <from,to> indices of _LayerEdge's in _eos
1103 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1105 SMESH_MesherHelper& helper);
1107 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1108 _EdgesOnShape& eos )
1109 : _anaCurve( curveForSmooth ), _eos( eos )
1112 bool Perform(_SolidData& data,
1113 Handle(ShapeAnalysis_Surface)& surface,
1114 const TopoDS_Face& F,
1115 SMESH_MesherHelper& helper );
1117 void prepare(_SolidData& data );
1119 void findEdgesToSmooth();
1121 bool isToSmooth( int iE );
1123 bool smoothAnalyticEdge( _SolidData& data,
1124 Handle(ShapeAnalysis_Surface)& surface,
1125 const TopoDS_Face& F,
1126 SMESH_MesherHelper& helper);
1127 bool smoothComplexEdge( _SolidData& data,
1128 Handle(ShapeAnalysis_Surface)& surface,
1129 const TopoDS_Face& F,
1130 SMESH_MesherHelper& helper);
1131 gp_XYZ getNormalNormal( const gp_XYZ & normal,
1132 const gp_XYZ& edgeDir);
1133 _LayerEdge* getLEdgeOnV( bool is2nd )
1135 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1137 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1139 void offPointsToPython() const; // debug
1142 //--------------------------------------------------------------------------------
1144 * \brief Compute positions of nodes of 2D structured mesh using TFI
1148 FaceQuadStruct _quadPoints;
1150 UVPtStruct& uvPnt( size_t i, size_t j ) { return _quadPoints.UVPt( i, j ); }
1153 _Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap );
1154 bool ComputeNodePositions();
1157 //--------------------------------------------------------------------------------
1159 * \brief Class of temporary mesh face.
1160 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1161 * needed because SMESH_ElementSearcher internally uses set of elements sorted by ID
1163 struct _TmpMeshFace : public SMDS_PolygonalFaceOfNodes
1165 const SMDS_MeshElement* _srcFace;
1167 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1170 const SMDS_MeshElement* srcFace=0 ):
1171 SMDS_PolygonalFaceOfNodes(nodes), _srcFace( srcFace ) { setID( ID ); setShapeID( faceID ); }
1172 virtual SMDSAbs_EntityType GetEntityType() const
1173 { return _srcFace ? _srcFace->GetEntityType() : SMDSEntity_Quadrangle; }
1174 virtual SMDSAbs_GeometryType GetGeomType() const
1175 { return _srcFace ? _srcFace->GetGeomType() : SMDSGeom_QUADRANGLE; }
1177 //--------------------------------------------------------------------------------
1179 * \brief Class of temporary mesh quadrangle face storing _LayerEdge it's based on
1181 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1183 _LayerEdge *_le1, *_le2;
1184 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1185 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1187 myNodes[0]=_le1->_nodes[0];
1188 myNodes[1]=_le1->_nodes.back();
1189 myNodes[2]=_le2->_nodes.back();
1190 myNodes[3]=_le2->_nodes[0];
1192 const SMDS_MeshNode* n( size_t i ) const
1194 return myNodes[ i ];
1196 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1198 SMESH_TNodeXYZ p0s( myNodes[0] );
1199 SMESH_TNodeXYZ p0t( myNodes[1] );
1200 SMESH_TNodeXYZ p1t( myNodes[2] );
1201 SMESH_TNodeXYZ p1s( myNodes[3] );
1202 gp_XYZ v0 = p0t - p0s;
1203 gp_XYZ v1 = p1t - p1s;
1204 gp_XYZ v01 = p1s - p0s;
1205 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1210 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1212 myNodes[0]=le1->_nodes[0];
1213 myNodes[1]=le1->_nodes.back();
1214 myNodes[2]=le2->_nodes.back();
1215 myNodes[3]=le2->_nodes[0];
1219 //--------------------------------------------------------------------------------
1221 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1222 * \warning Location of a surface is ignored
1224 struct _NodeCoordHelper
1226 SMESH_MesherHelper& _helper;
1227 const TopoDS_Face& _face;
1228 Handle(Geom_Surface) _surface;
1229 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1231 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1232 : _helper( helper ), _face( F )
1236 TopLoc_Location loc;
1237 _surface = BRep_Tool::Surface( _face, loc );
1239 if ( _surface.IsNull() )
1240 _fun = & _NodeCoordHelper::direct;
1242 _fun = & _NodeCoordHelper::byUV;
1244 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1247 gp_XYZ direct(const SMDS_MeshNode* n) const
1249 return SMESH_TNodeXYZ( n );
1251 gp_XYZ byUV (const SMDS_MeshNode* n) const
1253 gp_XY uv = _helper.GetNodeUV( _face, n );
1254 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1258 //================================================================================
1260 * \brief Check angle between vectors
1262 //================================================================================
1264 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1266 double dot = v1 * v2; // cos * |v1| * |v2|
1267 double l1 = v1.SquareMagnitude();
1268 double l2 = v2.SquareMagnitude();
1269 return (( dot * cos >= 0 ) &&
1270 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1275 ObjectPool< _LayerEdge > _edgePool;
1276 ObjectPool< _Curvature > _curvaturePool;
1277 ObjectPool< _2NearEdges > _nearEdgesPool;
1279 static _Factory* & me()
1281 static _Factory* theFactory = 0;
1286 _Factory() { me() = this; }
1287 ~_Factory() { me() = 0; }
1289 static _LayerEdge* NewLayerEdge() { return me()->_edgePool.getNew(); }
1290 static _Curvature * NewCurvature() { return me()->_curvaturePool.getNew(); }
1291 static _2NearEdges* NewNearEdges() { return me()->_nearEdgesPool.getNew(); }
1294 } // namespace VISCOUS_3D
1298 //================================================================================
1299 // StdMeshers_ViscousLayers hypothesis
1301 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, SMESH_Gen* gen)
1302 :SMESH_Hypothesis(hypId, gen),
1303 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1304 _method( SURF_OFFSET_SMOOTH ),
1307 _name = StdMeshers_ViscousLayers::GetHypType();
1308 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1309 } // --------------------------------------------------------------------------------
1310 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1312 if ( faceIds != _shapeIds )
1313 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1314 if ( _isToIgnoreShapes != toIgnore )
1315 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1316 } // --------------------------------------------------------------------------------
1317 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1319 if ( thickness != _thickness )
1320 _thickness = thickness, NotifySubMeshesHypothesisModification();
1321 } // --------------------------------------------------------------------------------
1322 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1324 if ( _nbLayers != nb )
1325 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1326 } // --------------------------------------------------------------------------------
1327 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1329 if ( _stretchFactor != factor )
1330 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1331 } // --------------------------------------------------------------------------------
1332 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1334 if ( _method != method )
1335 _method = method, NotifySubMeshesHypothesisModification();
1336 } // --------------------------------------------------------------------------------
1337 void StdMeshers_ViscousLayers::SetGroupName(const std::string& name)
1339 if ( _groupName != name )
1342 if ( !_groupName.empty() )
1343 NotifySubMeshesHypothesisModification();
1345 } // --------------------------------------------------------------------------------
1346 SMESH_ProxyMesh::Ptr
1347 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1348 const TopoDS_Shape& theShape,
1349 const bool toMakeN2NMap) const
1351 using namespace VISCOUS_3D;
1352 _ViscousBuilder builder;
1353 SMESH_ComputeErrorPtr err = builder.Compute( theMesh, theShape );
1354 if ( err && !err->IsOK() )
1355 return SMESH_ProxyMesh::Ptr();
1357 vector<SMESH_ProxyMesh::Ptr> components;
1358 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1359 for ( ; exp.More(); exp.Next() )
1361 if ( _MeshOfSolid* pm =
1362 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1364 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1365 if ( !builder.MakeN2NMap( pm ))
1366 return SMESH_ProxyMesh::Ptr();
1367 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1368 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1370 if ( pm->_warning && !pm->_warning->IsOK() )
1372 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1373 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1374 if ( !smError || smError->IsOK() )
1375 smError = pm->_warning;
1378 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1380 switch ( components.size() )
1384 case 1: return components[0];
1386 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1388 return SMESH_ProxyMesh::Ptr();
1389 } // --------------------------------------------------------------------------------
1390 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1392 save << " " << _nbLayers
1393 << " " << _thickness
1394 << " " << _stretchFactor
1395 << " " << _shapeIds.size();
1396 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1397 save << " " << _shapeIds[i];
1398 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1399 save << " " << _method;
1400 save << " " << _groupName.size();
1401 if ( !_groupName.empty() )
1402 save << " " << _groupName;
1404 } // --------------------------------------------------------------------------------
1405 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1407 int nbFaces, faceID, shapeToTreat, method;
1408 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1409 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1410 _shapeIds.push_back( faceID );
1411 if ( load >> shapeToTreat ) {
1412 _isToIgnoreShapes = !shapeToTreat;
1413 if ( load >> method )
1414 _method = (ExtrusionMethod) method;
1416 if ( load >> nameSize && nameSize > 0 )
1418 _groupName.resize( nameSize );
1419 load.get( _groupName[0] ); // remove a white-space
1420 load.getline( &_groupName[0], nameSize + 1 );
1424 _isToIgnoreShapes = true; // old behavior
1427 } // --------------------------------------------------------------------------------
1428 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* /*theMesh*/,
1429 const TopoDS_Shape& /*theShape*/)
1433 } // --------------------------------------------------------------------------------
1434 SMESH_ComputeErrorPtr
1435 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1436 const TopoDS_Shape& theShape,
1437 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1439 VISCOUS_3D::_ViscousBuilder builder;
1440 SMESH_ComputeErrorPtr err = builder.CheckHypotheses( theMesh, theShape );
1441 if ( err && !err->IsOK() )
1442 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1444 theStatus = SMESH_Hypothesis::HYP_OK;
1448 // --------------------------------------------------------------------------------
1449 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1452 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1453 return IsToIgnoreShapes() ? !isIn : isIn;
1456 // --------------------------------------------------------------------------------
1457 SMDS_MeshGroup* StdMeshers_ViscousLayers::CreateGroup( const std::string& theName,
1458 SMESH_Mesh& theMesh,
1459 SMDSAbs_ElementType theType)
1461 SMESH_Group* group = 0;
1462 SMDS_MeshGroup* groupDS = 0;
1464 if ( theName.empty() )
1467 if ( SMESH_Mesh::GroupIteratorPtr grIt = theMesh.GetGroups() )
1468 while( grIt->more() && !group )
1470 group = grIt->next();
1472 group->GetGroupDS()->GetType() != theType ||
1473 group->GetName() != theName ||
1474 !dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() ))
1478 group = theMesh.AddGroup( theType, theName.c_str() );
1480 groupDS = & dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() )->SMDSGroup();
1485 // END StdMeshers_ViscousLayers hypothesis
1486 //================================================================================
1488 namespace VISCOUS_3D
1490 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV,
1491 const double h0, bool* isRegularEdge = nullptr )
1495 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1496 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1497 gp_Pnt p = BRep_Tool::Pnt( fromV );
1498 gp_Pnt pf = c->Value( f ), pl = c->Value( l );
1499 double distF = p.SquareDistance( pf );
1500 double distL = p.SquareDistance( pl );
1501 c->D1(( distF < distL ? f : l), p, dir );
1502 if ( distL < distF ) dir.Reverse();
1503 bool isDifficult = false;
1504 if ( dir.SquareMagnitude() < h0 * h0 ) // check dir orientation
1506 gp_Pnt& pClose = distF < distL ? pf : pl;
1507 gp_Pnt& pFar = distF < distL ? pl : pf;
1508 gp_Pnt pMid = 0.9 * pClose.XYZ() + 0.1 * pFar.XYZ();
1509 gp_Vec vMid( p, pMid );
1510 double dot = vMid * dir;
1511 double cos2 = dot * dot / dir.SquareMagnitude() / vMid.SquareMagnitude();
1512 if ( cos2 < 0.7 * 0.7 || dot < 0 ) // large angle between dir and vMid
1514 double uClose = distF < distL ? f : l;
1515 double uFar = distF < distL ? l : f;
1516 double r = h0 / SMESH_Algo::EdgeLength( E );
1517 double uMid = ( 1 - r ) * uClose + r * uFar;
1518 pMid = c->Value( uMid );
1519 dir = gp_Vec( p, pMid );
1523 if ( isRegularEdge )
1524 *isRegularEdge = !isDifficult;
1528 //--------------------------------------------------------------------------------
1529 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1530 SMESH_MesherHelper& helper)
1533 double f,l; gp_Pnt p;
1534 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1535 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1536 double u = helper.GetNodeU( E, atNode );
1540 //--------------------------------------------------------------------------------
1541 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1542 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok/*,
1544 //--------------------------------------------------------------------------------
1545 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1546 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1549 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1552 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1553 return getFaceDir( F, v, node, helper, ok );
1555 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1556 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1557 gp_Pnt p; gp_Vec du, dv, norm;
1558 surface->D1( uv.X(),uv.Y(), p, du,dv );
1561 double u = helper.GetNodeU( fromE, node, 0, &ok );
1563 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1564 if ( o == TopAbs_REVERSED )
1567 gp_Vec dir = norm ^ du;
1569 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1570 helper.IsClosedEdge( fromE ))
1572 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1573 else c->D1( f, p, dv );
1574 if ( o == TopAbs_REVERSED )
1576 gp_Vec dir2 = norm ^ dv;
1577 dir = dir.Normalized() + dir2.Normalized();
1581 //--------------------------------------------------------------------------------
1582 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1583 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1584 bool& ok/*, double* cosin*/)
1586 TopoDS_Face faceFrw = F;
1587 faceFrw.Orientation( TopAbs_FORWARD );
1588 //double f,l; TopLoc_Location loc;
1589 TopoDS_Edge edges[2]; // sharing a vertex
1592 TopoDS_Vertex VV[2];
1593 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1594 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1596 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1597 if ( SMESH_Algo::isDegenerated( e )) continue;
1598 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1599 if ( VV[1].IsSame( fromV )) {
1600 nbEdges += edges[ 0 ].IsNull();
1603 else if ( VV[0].IsSame( fromV )) {
1604 nbEdges += edges[ 1 ].IsNull();
1609 gp_XYZ dir(0,0,0), edgeDir[2];
1612 // get dirs of edges going fromV
1614 for ( size_t i = 0; i < nbEdges && ok; ++i )
1616 edgeDir[i] = getEdgeDir( edges[i], fromV, 0.1 * SMESH_Algo::EdgeLength( edges[i] ));
1617 double size2 = edgeDir[i].SquareModulus();
1618 if (( ok = size2 > numeric_limits<double>::min() ))
1619 edgeDir[i] /= sqrt( size2 );
1621 if ( !ok ) return dir;
1623 // get angle between the 2 edges
1625 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1626 if ( Abs( angle ) < 5 * M_PI/180 )
1628 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1632 dir = edgeDir[0] + edgeDir[1];
1637 // double angle = faceNormal.Angle( dir );
1638 // *cosin = Cos( angle );
1641 else if ( nbEdges == 1 )
1643 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1644 //if ( cosin ) *cosin = 1.;
1654 //================================================================================
1656 * \brief Finds concave VERTEXes of a FACE
1658 //================================================================================
1660 bool getConcaveVertices( const TopoDS_Face& F,
1661 SMESH_MesherHelper& helper,
1662 set< TGeomID >* vertices = 0)
1664 // check angles at VERTEXes
1666 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1667 for ( size_t iW = 0; iW < wires.size(); ++iW )
1669 const int nbEdges = wires[iW]->NbEdges();
1670 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1672 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1674 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1675 int iE2 = ( iE1 + 1 ) % nbEdges;
1676 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1677 iE2 = ( iE2 + 1 ) % nbEdges;
1678 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1679 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1680 wires[iW]->Edge( iE2 ), F, V );
1681 if ( angle < -5. * M_PI / 180. )
1685 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1689 return vertices ? !vertices->empty() : false;
1692 //================================================================================
1694 * \brief Returns true if a FACE is bound by a concave EDGE
1696 //================================================================================
1698 bool isConcave( const TopoDS_Face& F,
1699 SMESH_MesherHelper& helper,
1700 set< TGeomID >* vertices = 0 )
1702 bool isConcv = false;
1703 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1705 gp_Vec2d drv1, drv2;
1707 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1708 for ( ; eExp.More(); eExp.Next() )
1710 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1711 if ( SMESH_Algo::isDegenerated( E )) continue;
1712 // check if 2D curve is concave
1713 BRepAdaptor_Curve2d curve( E, F );
1714 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1715 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1716 curve.Intervals( intervals, GeomAbs_C2 );
1717 bool isConvex = true;
1718 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1720 double u1 = intervals( i );
1721 double u2 = intervals( i+1 );
1722 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1723 double cross = drv1 ^ drv2;
1724 if ( E.Orientation() == TopAbs_REVERSED )
1726 isConvex = ( cross > -1e-9 ); // 0.1 );
1730 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1739 // check angles at VERTEXes
1740 if ( getConcaveVertices( F, helper, vertices ))
1746 //================================================================================
1748 * \brief Computes minimal distance of face in-FACE nodes from an EDGE
1749 * \param [in] face - the mesh face to treat
1750 * \param [in] nodeOnEdge - a node on the EDGE
1751 * \param [out] faceSize - the computed distance
1752 * \return bool - true if faceSize computed
1754 //================================================================================
1756 bool getDistFromEdge( const SMDS_MeshElement* face,
1757 const SMDS_MeshNode* nodeOnEdge,
1760 faceSize = Precision::Infinite();
1763 int nbN = face->NbCornerNodes();
1764 int iOnE = face->GetNodeIndex( nodeOnEdge );
1765 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1766 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1767 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1768 face->GetNode( iNext[1] ) };
1769 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1770 double segLen = -1.;
1771 // look for two neighbor not in-FACE nodes of face
1772 for ( int i = 0; i < 2; ++i )
1774 if (( nNext[i]->GetPosition()->GetDim() != 2 ) &&
1775 ( nodeOnEdge->GetPosition()->GetDim() == 0 || nNext[i]->GetID() < nodeOnEdge->GetID() ))
1777 // look for an in-FACE node
1778 for ( int iN = 0; iN < nbN; ++iN )
1780 if ( iN == iOnE || iN == iNext[i] )
1782 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1783 gp_XYZ v = pInFace - segEnd;
1786 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1787 segLen = segVec.Modulus();
1789 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1790 faceSize = Min( faceSize, distToSeg );
1798 //================================================================================
1800 * \brief Return direction of axis or revolution of a surface
1802 //================================================================================
1804 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1807 switch ( surface.GetType() ) {
1810 gp_Cone cone = surface.Cone();
1811 axis = cone.Axis().Direction();
1814 case GeomAbs_Sphere:
1816 gp_Sphere sphere = surface.Sphere();
1817 axis = sphere.Position().Direction();
1820 case GeomAbs_SurfaceOfRevolution:
1822 axis = surface.AxeOfRevolution().Direction();
1825 //case GeomAbs_SurfaceOfExtrusion:
1826 case GeomAbs_OffsetSurface:
1828 #if OCC_VERSION_LARGE < 0x07070000
1829 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1830 return getRovolutionAxis( base->Surface(), axis );
1832 Handle(Adaptor3d_Surface) base = surface.BasisSurface();
1833 return getRovolutionAxis( *base, axis );
1836 default: return false;
1841 //--------------------------------------------------------------------------------
1842 // DEBUG. Dump intermediate node positions into a python script
1843 // HOWTO use: run python commands written in a console and defined in /tmp/viscous.py
1844 // to see construction steps of viscous layers
1850 PyDump(SMESH_Mesh& m) {
1851 int tag = 3 + m.GetId();
1852 const char* fname = "/tmp/viscous.py";
1853 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
1854 py = _pyStream = new ofstream(fname);
1855 *py << "import SMESH" << endl
1856 << "from salome.smesh import smeshBuilder" << endl
1857 << "smesh = smeshBuilder.New()" << endl
1858 << "meshSO = salome.myStudy.FindObjectID('0:1:2:" << tag <<"')" << endl
1859 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1864 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1865 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1866 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1867 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1871 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1872 struct MyStream : public ostream
1874 template <class T> ostream & operator<<( const T &anything ) { return *this ; }
1876 void Pause() { py = &_mystream; }
1877 void Resume() { py = _pyStream; }
1881 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1882 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1883 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1884 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1885 void _dumpFunction(const string& fun, int ln)
1886 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1887 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1888 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1889 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1890 void _dumpCmd(const string& txt, int ln)
1891 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1892 void dumpFunctionEnd()
1893 { if (py) *py<< " return"<< endl; }
1894 void dumpChangeNodes( const SMDS_MeshElement* f )
1895 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1896 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1897 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1898 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1902 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} void Pause() {} void Resume() {} };
1903 #define dumpFunction(f) f
1905 #define dumpMoveComm(n,txt)
1906 #define dumpCmd(txt)
1907 #define dumpFunctionEnd()
1908 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1909 #define debugMsg( txt ) {}
1914 using namespace VISCOUS_3D;
1916 //================================================================================
1918 * \brief Constructor of _ViscousBuilder
1920 //================================================================================
1922 _ViscousBuilder::_ViscousBuilder()
1924 _error = SMESH_ComputeError::New(COMPERR_OK);
1928 //================================================================================
1930 * \brief Stores error description and returns false
1932 //================================================================================
1934 bool _ViscousBuilder::error(const string& text, int solidId )
1936 const string prefix = string("Viscous layers builder: ");
1937 _error->myName = COMPERR_ALGO_FAILED;
1938 _error->myComment = prefix + text;
1941 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1942 if ( !sm && !_sdVec.empty() )
1943 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1944 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1946 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1947 if ( smError && smError->myAlgo )
1948 _error->myAlgo = smError->myAlgo;
1950 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1952 // set KO to all solids
1953 for ( size_t i = 0; i < _sdVec.size(); ++i )
1955 if ( _sdVec[i]._index == solidId )
1957 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1958 if ( !sm->IsEmpty() )
1960 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1961 if ( !smError || smError->IsOK() )
1963 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1964 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1968 makeGroupOfLE(); // debug
1973 //================================================================================
1975 * \brief At study restoration, restore event listeners used to clear an inferior
1976 * dim sub-mesh modified by viscous layers
1978 //================================================================================
1980 void _ViscousBuilder::RestoreListeners()
1985 //================================================================================
1987 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1989 //================================================================================
1991 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1993 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1994 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1995 for ( ; fExp.More(); fExp.Next() )
1997 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1998 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
2000 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
2002 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
2005 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
2006 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
2008 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
2009 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
2010 while( prxIt->more() )
2012 const SMDS_MeshElement* fSrc = srcIt->next();
2013 const SMDS_MeshElement* fPrx = prxIt->next();
2014 if ( fSrc->NbNodes() != fPrx->NbNodes())
2015 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
2016 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
2017 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
2020 pm->_n2nMapComputed = true;
2024 //================================================================================
2026 * \brief Does its job
2028 //================================================================================
2030 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
2031 const TopoDS_Shape& theShape)
2037 // check if proxy mesh already computed
2038 TopExp_Explorer exp( theShape, TopAbs_SOLID );
2040 return error("No SOLID's in theShape"), _error;
2042 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
2043 return SMESH_ComputeErrorPtr(); // everything already computed
2045 // TODO: ignore already computed SOLIDs
2046 if ( !findSolidsWithLayers())
2049 if ( !findFacesWithLayers() )
2052 if ( !makeEdgesOnShape() )
2055 findPeriodicFaces();
2057 PyDump debugDump( theMesh );
2058 _pyDump = &debugDump;
2061 for ( size_t i = 0; i < _sdVec.size(); ++i )
2064 for ( iSD = 0; iSD < _sdVec.size(); ++iSD ) // find next SOLID to compute
2065 if ( _sdVec[iSD]._before.IsEmpty() &&
2066 !_sdVec[iSD]._solid.IsNull() &&
2067 !_sdVec[iSD]._done )
2069 if ( iSD == _sdVec.size() )
2072 if ( ! makeLayer(_sdVec[iSD]) ) // create _LayerEdge's
2075 if ( _sdVec[iSD]._n2eMap.size() == 0 ) // no layers in a SOLID
2077 _sdVec[iSD]._solid.Nullify();
2081 if ( ! inflate(_sdVec[iSD]) ) // increase length of _LayerEdge's
2084 if ( ! refine(_sdVec[iSD]) ) // create nodes and prisms
2087 if ( ! shrink(_sdVec[iSD]) ) // shrink 2D mesh on FACEs w/o layer
2090 addBoundaryElements(_sdVec[iSD]); // create quadrangles on prism bare sides
2092 _sdVec[iSD]._done = true;
2094 const TopoDS_Shape& solid = _sdVec[iSD]._solid;
2095 for ( iSD = 0; iSD < _sdVec.size(); ++iSD )
2096 _sdVec[iSD]._before.Remove( solid );
2099 makeGroupOfLE(); // debug
2105 //================================================================================
2107 * \brief Check validity of hypotheses
2109 //================================================================================
2111 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
2112 const TopoDS_Shape& shape )
2116 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
2117 return SMESH_ComputeErrorPtr(); // everything already computed
2120 findSolidsWithLayers( /*checkFaceMesh=*/false );
2121 bool ok = findFacesWithLayers( true );
2123 // remove _MeshOfSolid's of _SolidData's
2124 for ( size_t i = 0; i < _sdVec.size(); ++i )
2125 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
2130 return SMESH_ComputeErrorPtr();
2133 //================================================================================
2135 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
2137 //================================================================================
2139 bool _ViscousBuilder::findSolidsWithLayers(const bool checkFaceMesh)
2142 TopTools_IndexedMapOfShape allSolids;
2143 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
2144 _sdVec.reserve( allSolids.Extent());
2146 SMESH_HypoFilter filter;
2147 for ( int i = 1; i <= allSolids.Extent(); ++i )
2149 SMESH_subMesh* sm = _mesh->GetSubMesh( allSolids(i) );
2150 if ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbElements() > 0 )
2151 continue; // solid is already meshed
2152 // TODO: check if algo is hidden
2153 SMESH_Algo* algo = sm->GetAlgo();
2154 if ( !algo ) continue;
2155 // check if all FACEs are meshed, which can be false if Compute() a sub-shape
2156 if ( checkFaceMesh )
2158 bool facesMeshed = true;
2159 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,true);
2160 while ( smIt->more() && facesMeshed )
2162 SMESH_subMesh * faceSM = smIt->next();
2163 if ( faceSM->GetSubShape().ShapeType() != TopAbs_FACE )
2165 facesMeshed = faceSM->IsMeshComputed();
2170 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
2171 const list <const SMESHDS_Hypothesis *> & allHyps =
2172 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
2173 _SolidData* soData = 0;
2174 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
2175 const StdMeshers_ViscousLayers* viscHyp = 0;
2176 for ( ; hyp != allHyps.end(); ++hyp )
2177 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
2179 TopoDS_Shape hypShape;
2180 filter.Init( filter.Is( viscHyp ));
2181 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
2185 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
2188 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
2189 soData = & _sdVec.back();
2190 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
2191 soData->_helper = new SMESH_MesherHelper( *_mesh );
2192 soData->_helper->SetSubShape( allSolids(i) );
2193 _solids.Add( allSolids(i) );
2195 soData->_hyps.push_back( viscHyp );
2196 soData->_hypShapes.push_back( hypShape );
2199 if ( _sdVec.empty() )
2201 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
2206 //================================================================================
2208 * \brief Set a _SolidData to be computed before another
2210 //================================================================================
2212 bool _ViscousBuilder::setBefore( _SolidData& solidBefore, _SolidData& solidAfter )
2214 // check possibility to set this order; get all solids before solidBefore
2215 TopTools_IndexedMapOfShape allSolidsBefore;
2216 allSolidsBefore.Add( solidBefore._solid );
2217 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2219 int iSD = _solids.FindIndex( allSolidsBefore(i) );
2222 TopTools_MapIteratorOfMapOfShape soIt( _sdVec[ iSD-1 ]._before );
2223 for ( ; soIt.More(); soIt.Next() )
2224 allSolidsBefore.Add( soIt.Value() );
2227 if ( allSolidsBefore.Contains( solidAfter._solid ))
2230 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2231 solidAfter._before.Add( allSolidsBefore(i) );
2236 //================================================================================
2240 //================================================================================
2242 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
2244 SMESH_MesherHelper helper( *_mesh );
2245 TopExp_Explorer exp;
2247 // collect all faces-to-ignore defined by hyp
2248 for ( size_t i = 0; i < _sdVec.size(); ++i )
2250 // get faces-to-ignore defined by each hyp
2251 typedef const StdMeshers_ViscousLayers* THyp;
2252 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
2253 list< TFacesOfHyp > ignoreFacesOfHyps;
2254 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
2255 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
2256 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
2258 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
2259 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
2262 // fill _SolidData::_face2hyp and check compatibility of hypotheses
2263 const int nbHyps = _sdVec[i]._hyps.size();
2266 // check if two hypotheses define different parameters for the same FACE
2267 list< TFacesOfHyp >::iterator igFacesOfHyp;
2268 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2270 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
2272 igFacesOfHyp = ignoreFacesOfHyps.begin();
2273 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2274 if ( ! igFacesOfHyp->first.count( faceID ))
2277 return error(SMESH_Comment("Several hypotheses define "
2278 "Viscous Layers on the face #") << faceID );
2279 hyp = igFacesOfHyp->second;
2282 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2284 _sdVec[i]._ignoreFaceIds.insert( faceID );
2287 // check if two hypotheses define different number of viscous layers for
2288 // adjacent faces of a solid
2289 set< int > nbLayersSet;
2290 igFacesOfHyp = ignoreFacesOfHyps.begin();
2291 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2293 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2295 if ( nbLayersSet.size() > 1 )
2297 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2299 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2300 THyp hyp1 = 0, hyp2 = 0;
2301 while( const TopoDS_Shape* face = fIt->next() )
2303 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2304 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2305 if ( f2h != _sdVec[i]._face2hyp.end() )
2307 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2310 if ( hyp1 && hyp2 &&
2311 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2313 return error("Two hypotheses define different number of "
2314 "viscous layers on adjacent faces");
2318 } // if ( nbHyps > 1 )
2321 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2325 if ( onlyWith ) // is called to check hypotheses compatibility only
2328 // fill _SolidData::_reversedFaceIds
2329 for ( size_t i = 0; i < _sdVec.size(); ++i )
2331 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2332 for ( ; exp.More(); exp.Next() )
2334 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2335 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2336 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2337 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2338 helper.IsReversedSubMesh( face ))
2340 _sdVec[i]._reversedFaceIds.insert( faceID );
2345 // Find FACEs to shrink mesh on (solution 2 in issue 0020832): fill in _shrinkShape2Shape
2346 TopTools_IndexedMapOfShape shapes;
2347 std::string structAlgoName = "Hexa_3D";
2348 for ( size_t i = 0; i < _sdVec.size(); ++i )
2351 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2352 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2354 const TopoDS_Shape& edge = shapes(iE);
2355 // find 2 FACEs sharing an EDGE
2357 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE, &_sdVec[i]._solid);
2358 while ( fIt->more())
2360 const TopoDS_Shape* f = fIt->next();
2361 FF[ int( !FF[0].IsNull()) ] = *f;
2363 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2365 // check presence of layers on them
2367 for ( int j = 0; j < 2; ++j )
2368 ignore[j] = _sdVec[i]._ignoreFaceIds.count( getMeshDS()->ShapeToIndex( FF[j] ));
2369 if ( ignore[0] == ignore[1] )
2370 continue; // nothing interesting
2371 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ]; // FACE w/o layers
2374 if ( !fWOL.IsNull())
2376 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2377 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2382 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2384 for ( size_t i = 0; i < _sdVec.size(); ++i )
2387 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2388 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2390 const TopoDS_Shape& vertex = shapes(iV);
2391 // find faces WOL sharing the vertex
2392 vector< TopoDS_Shape > facesWOL;
2393 size_t totalNbFaces = 0;
2394 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE, &_sdVec[i]._solid );
2395 while ( fIt->more())
2397 const TopoDS_Shape* f = fIt->next();
2399 const int fID = getMeshDS()->ShapeToIndex( *f );
2400 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&& !_sdVec[i]._noShrinkShapes.count( fID )*/)
2401 facesWOL.push_back( *f );
2403 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2404 continue; // no layers at this vertex or no WOL
2405 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2406 switch ( facesWOL.size() )
2410 helper.SetSubShape( facesWOL[0] );
2411 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2413 TopoDS_Shape seamEdge;
2414 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2415 while ( eIt->more() && seamEdge.IsNull() )
2417 const TopoDS_Shape* e = eIt->next();
2418 if ( helper.IsRealSeam( *e ) )
2421 if ( !seamEdge.IsNull() )
2423 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2427 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2432 // find an edge shared by 2 faces
2433 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2434 while ( eIt->more())
2436 const TopoDS_Shape* e = eIt->next();
2437 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2438 helper.IsSubShape( *e, facesWOL[1]))
2440 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2446 std::ostringstream msg;
2447 msg << "Not yet supported case: vertex bounded by ";
2448 msg << facesWOL.size();
2449 msg << " faces without layer at coordinates (";
2450 TopoDS_Vertex v = TopoDS::Vertex(vertex);
2451 gp_Pnt p = BRep_Tool::Pnt(v);
2452 msg << p.X() << ", " << p.Y() << ", " << p.Z() << ")";
2453 return error(msg.str().c_str(), _sdVec[i]._index);
2458 // Add to _noShrinkShapes sub-shapes of FACE's that can't be shrunk since
2459 // the algo of the SOLID sharing the FACE does not support it or for other reasons
2460 set< string > notSupportAlgos; notSupportAlgos.insert( structAlgoName );
2461 for ( size_t i = 0; i < _sdVec.size(); ++i )
2463 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2464 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2466 const TopoDS_Shape& fWOL = e2f->second;
2467 const TGeomID edgeID = e2f->first;
2468 TGeomID faceID = getMeshDS()->ShapeToIndex( fWOL );
2469 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2470 if ( edge.ShapeType() != TopAbs_EDGE )
2471 continue; // shrink shape is VERTEX
2474 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2475 while ( soIt->more() && solid.IsNull() )
2477 const TopoDS_Shape* so = soIt->next();
2478 if ( !so->IsSame( _sdVec[i]._solid ))
2481 if ( solid.IsNull() )
2484 bool noShrinkE = false;
2485 SMESH_Algo* algo = _mesh->GetSubMesh( solid )->GetAlgo();
2486 bool isStructured = ( algo && algo->GetName() == structAlgoName );
2487 size_t iSolid = _solids.FindIndex( solid ) - 1;
2488 if ( iSolid < _sdVec.size() && _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2490 // the adjacent SOLID has NO layers on fWOL;
2491 // shrink allowed if
2492 // - there are layers on the EDGE in the adjacent SOLID
2493 // - there are NO layers in the adjacent SOLID && algo is unstructured and computed later
2494 bool hasWLAdj = (_sdVec[iSolid]._shrinkShape2Shape.count( edgeID ));
2495 bool shrinkAllowed = (( hasWLAdj ) ||
2496 ( !isStructured && setBefore( _sdVec[ i ], _sdVec[ iSolid ] )));
2497 noShrinkE = !shrinkAllowed;
2499 else if ( iSolid < _sdVec.size() )
2501 // the adjacent SOLID has layers on fWOL;
2502 // check if SOLID's mesh is unstructured and then try to set it
2503 // to be computed after the i-th solid
2504 if ( isStructured || !setBefore( _sdVec[ i ], _sdVec[ iSolid ] ))
2505 noShrinkE = true; // don't shrink fWOL
2509 // the adjacent SOLID has NO layers at all
2510 noShrinkE = isStructured;
2515 _sdVec[i]._noShrinkShapes.insert( edgeID );
2517 // check if there is a collision with to-shrink-from EDGEs in iSolid
2518 // if ( iSolid < _sdVec.size() )
2521 // TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2522 // for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2524 // const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2525 // const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2526 // if ( eID == edgeID ||
2527 // !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2528 // _sdVec[i]._noShrinkShapes.count( eID ))
2530 // for ( int is1st = 0; is1st < 2; ++is1st )
2532 // TopoDS_Vertex V = helper.IthVertex( is1st, E );
2533 // if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2535 // return error("No way to make a conformal mesh with "
2536 // "the given set of faces with layers", _sdVec[i]._index);
2543 // add VERTEXes of the edge in _noShrinkShapes, which is necessary if
2544 // _shrinkShape2Shape is different in the adjacent SOLID
2545 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2547 TGeomID vID = getMeshDS()->ShapeToIndex( vIt.Value() );
2548 bool noShrinkV = false, noShrinkIfAdjMeshed = false;
2550 if ( iSolid < _sdVec.size() )
2552 if ( _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2554 map< TGeomID, TopoDS_Shape >::iterator i2S, i2SAdj;
2555 i2S = _sdVec[i ]._shrinkShape2Shape.find( vID );
2556 i2SAdj = _sdVec[iSolid]._shrinkShape2Shape.find( vID );
2557 if ( i2SAdj == _sdVec[iSolid]._shrinkShape2Shape.end() )
2558 noShrinkV = (( isStructured ) ||
2559 ( noShrinkIfAdjMeshed = i2S->second.ShapeType() == TopAbs_EDGE ));
2561 noShrinkV = ( ! i2S->second.IsSame( i2SAdj->second ));
2565 noShrinkV = noShrinkE;
2570 // the adjacent SOLID has NO layers at all
2577 noShrinkV = noShrinkIfAdjMeshed =
2578 ( _sdVec[i]._shrinkShape2Shape[ vID ].ShapeType() == TopAbs_EDGE );
2582 if ( noShrinkV && noShrinkIfAdjMeshed )
2584 // noShrinkV if FACEs in the adjacent SOLID are meshed
2585 PShapeIteratorPtr fIt = helper.GetAncestors( _sdVec[i]._shrinkShape2Shape[ vID ],
2586 *_mesh, TopAbs_FACE, &solid );
2587 while ( fIt->more() )
2589 const TopoDS_Shape* f = fIt->next();
2590 if ( !f->IsSame( fWOL ))
2592 noShrinkV = ! _mesh->GetSubMesh( *f )->IsEmpty();
2598 _sdVec[i]._noShrinkShapes.insert( vID );
2601 } // loop on _sdVec[i]._shrinkShape2Shape
2602 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2605 // add FACEs of other SOLIDs to _ignoreFaceIds
2606 for ( size_t i = 0; i < _sdVec.size(); ++i )
2609 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2611 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2613 if ( !shapes.Contains( exp.Current() ))
2614 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2621 //================================================================================
2623 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2625 //================================================================================
2627 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2628 const StdMeshers_ViscousLayers* hyp,
2629 const TopoDS_Shape& hypShape,
2630 set<TGeomID>& ignoreFaceIds)
2632 TopExp_Explorer exp;
2634 vector<TGeomID> ids = hyp->GetBndShapes();
2635 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2637 for ( size_t ii = 0; ii < ids.size(); ++ii )
2639 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2640 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2641 ignoreFaceIds.insert( ids[ii] );
2644 else // FACEs with layers are given
2646 exp.Init( solid, TopAbs_FACE );
2647 for ( ; exp.More(); exp.Next() )
2649 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2650 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2651 ignoreFaceIds.insert( faceInd );
2655 // ignore internal FACEs if inlets and outlets are specified
2656 if ( hyp->IsToIgnoreShapes() )
2658 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2659 TopExp::MapShapesAndAncestors( hypShape,
2660 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2662 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2664 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2665 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2668 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2670 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2675 //================================================================================
2677 * \brief Create the inner surface of the viscous layer and prepare data for infation
2679 //================================================================================
2681 bool _ViscousBuilder::makeLayer(_SolidData& data)
2683 // make a map to find new nodes on sub-shapes shared with other SOLID
2684 map< TGeomID, TNode2Edge* >::iterator s2ne;
2685 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2686 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2688 TGeomID shapeInd = s2s->first;
2689 for ( size_t i = 0; i < _sdVec.size(); ++i )
2691 if ( _sdVec[i]._index == data._index ) continue;
2692 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2693 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2694 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2696 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2702 // Create temporary faces and _LayerEdge's
2704 debugMsg( "######################" );
2705 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2707 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2709 data._stepSize = Precision::Infinite();
2710 data._stepSizeNodes[0] = 0;
2712 SMESH_MesherHelper helper( *_mesh );
2713 helper.SetSubShape( data._solid );
2714 helper.SetElementsOnShape( true );
2716 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2717 TNode2Edge::iterator n2e2;
2719 // make _LayerEdge's
2720 for ( TopExp_Explorer exp( data._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2722 const TopoDS_Face& F = TopoDS::Face( exp.Current() );
2723 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2724 const TGeomID id = sm->GetId();
2725 if ( edgesByGeom[ id ]._shape.IsNull() )
2726 continue; // no layers
2727 SMESH_ProxyMesh::SubMesh* proxySub =
2728 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2730 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2731 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << id, data._index );
2733 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2734 while ( eIt->more() )
2736 const SMDS_MeshElement* face = eIt->next();
2737 double faceMaxCosin = -1;
2738 _LayerEdge* maxCosinEdge = 0;
2739 int nbDegenNodes = 0;
2741 newNodes.resize( face->NbCornerNodes() );
2742 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2744 const SMDS_MeshNode* n = face->GetNode( i );
2745 const int shapeID = n->getshapeId();
2746 const bool onDegenShap = helper.IsDegenShape( shapeID );
2747 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2752 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2753 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2754 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2755 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2765 TNode2Edge::iterator n2e = data._n2eMap.insert({ n, nullptr }).first;
2766 if ( !(*n2e).second )
2769 _LayerEdge* edge = _Factory::NewLayerEdge();
2770 edge->_nodes.push_back( n );
2772 edgesByGeom[ shapeID ]._edges.push_back( edge );
2773 const bool noShrink = data._noShrinkShapes.count( shapeID );
2775 SMESH_TNodeXYZ xyz( n );
2777 // set edge data or find already refined _LayerEdge and get data from it
2778 if (( !noShrink ) &&
2779 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2780 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2781 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2783 _LayerEdge* foundEdge = (*n2e2).second;
2784 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2785 foundEdge->_pos.push_back( lastPos );
2786 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2787 const_cast< SMDS_MeshNode* >
2788 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2794 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2796 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2799 if ( edge->_nodes.size() < 2 && !noShrink )
2800 edge->Block( data ); // a sole node is moved only if noShrink
2802 dumpMove(edge->_nodes.back());
2804 if ( edge->_cosin > faceMaxCosin && edge->_nodes.size() > 1 )
2806 faceMaxCosin = edge->_cosin;
2807 maxCosinEdge = edge;
2810 newNodes[ i ] = n2e->second->_nodes.back();
2813 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2815 if ( newNodes.size() - nbDegenNodes < 2 )
2818 // create a temporary face
2819 const SMDS_MeshElement* newFace =
2820 new _TmpMeshFace( newNodes, --_tmpFaceID, face->GetShapeID(), face );
2821 proxySub->AddElement( newFace );
2823 // compute inflation step size by min size of element on a convex surface
2824 if ( faceMaxCosin > theMinSmoothCosin )
2825 limitStepSize( data, face, maxCosinEdge );
2827 } // loop on 2D elements on a FACE
2828 } // loop on FACEs of a SOLID to create _LayerEdge's
2831 // Set _LayerEdge::_neibors
2832 TNode2Edge::iterator n2e;
2833 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2835 _EdgesOnShape& eos = data._edgesOnShape[iS];
2836 for ( size_t i = 0; i < eos._edges.size(); ++i )
2838 _LayerEdge* edge = eos._edges[i];
2839 TIDSortedNodeSet nearNodes;
2840 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2841 while ( fIt->more() )
2843 const SMDS_MeshElement* f = fIt->next();
2844 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2845 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2847 nearNodes.erase( edge->_nodes[0] );
2848 edge->_neibors.reserve( nearNodes.size() );
2849 TIDSortedNodeSet::iterator node = nearNodes.begin();
2850 for ( ; node != nearNodes.end(); ++node )
2851 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2852 edge->_neibors.push_back( n2e->second );
2855 // Fix uv of nodes on periodic FACEs (bos #20643)
2857 if ( eos.ShapeType() != TopAbs_EDGE ||
2858 eos.SWOLType() != TopAbs_FACE ||
2862 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
2863 SMESH_MesherHelper faceHelper( *_mesh );
2864 faceHelper.SetSubShape( F );
2865 faceHelper.ToFixNodeParameters( true );
2866 if ( faceHelper.GetPeriodicIndex() == 0 )
2869 SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( F );
2870 if ( !smDS || smDS->GetNodes() == 0 )
2873 bool toCheck = true;
2874 const double tol = 2 * helper.MaxTolerance( F );
2875 for ( SMDS_NodeIteratorPtr nIt = smDS->GetNodes(); nIt->more(); )
2877 const SMDS_MeshNode* node = nIt->next();
2878 gp_XY uvNew( Precision::Infinite(), 0 );
2882 gp_XY uv = faceHelper.GetNodeUV( F, node );
2883 if ( ! faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true ))
2884 break; // projection on F failed
2885 if (( uv - uvNew ).Modulus() < Precision::Confusion() )
2886 break; // current uv is OK
2888 faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true );
2892 data._epsilon = 1e-7;
2893 if ( data._stepSize < 1. )
2894 data._epsilon *= data._stepSize;
2896 if ( !findShapesToSmooth( data )) // _LayerEdge::_maxLen is computed here
2899 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2900 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2902 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2903 const SMDS_MeshNode* nn[2];
2904 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2906 _EdgesOnShape& eos = data._edgesOnShape[iS];
2907 for ( size_t i = 0; i < eos._edges.size(); ++i )
2909 _LayerEdge* edge = eos._edges[i];
2910 if ( edge->IsOnEdge() )
2912 // get neighbor nodes
2913 bool hasData = ( edge->_2neibors->_edges[0] );
2914 if ( hasData ) // _LayerEdge is a copy of another one
2916 nn[0] = edge->_2neibors->srcNode(0);
2917 nn[1] = edge->_2neibors->srcNode(1);
2919 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2923 // set neighbor _LayerEdge's
2924 for ( int j = 0; j < 2; ++j )
2926 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2927 return error("_LayerEdge not found by src node", data._index);
2928 edge->_2neibors->_edges[j] = n2e->second;
2931 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2934 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2936 _Simplex& s = edge->_simplices[j];
2937 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2938 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2941 // For an _LayerEdge on a degenerated EDGE, copy some data from
2942 // a corresponding _LayerEdge on a VERTEX
2943 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2944 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2946 // Generally we should not get here
2947 if ( eos.ShapeType() != TopAbs_EDGE )
2949 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2950 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2951 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2953 const _LayerEdge* vEdge = n2e->second;
2954 edge->_normal = vEdge->_normal;
2955 edge->_lenFactor = vEdge->_lenFactor;
2956 edge->_cosin = vEdge->_cosin;
2959 } // loop on data._edgesOnShape._edges
2960 } // loop on data._edgesOnShape
2962 // fix _LayerEdge::_2neibors on EDGEs to smooth
2963 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2964 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2965 // if ( !e2c->second.IsNull() )
2967 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2968 // data.Sort2NeiborsOnEdge( eos->_edges );
2975 //================================================================================
2977 * \brief Compute inflation step size by min size of element on a convex surface
2979 //================================================================================
2981 void _ViscousBuilder::limitStepSize( _SolidData& data,
2982 const SMDS_MeshElement* face,
2983 const _LayerEdge* maxCosinEdge )
2986 double minSize = 10 * data._stepSize;
2987 const int nbNodes = face->NbCornerNodes();
2988 for ( int i = 0; i < nbNodes; ++i )
2990 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2991 const SMDS_MeshNode* curN = face->GetNode( i );
2992 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2993 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2995 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2996 if ( dist < minSize )
2997 minSize = dist, iN = i;
3000 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
3001 if ( newStep < data._stepSize )
3003 data._stepSize = newStep;
3004 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
3005 data._stepSizeNodes[0] = face->GetNode( iN );
3006 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
3010 //================================================================================
3012 * \brief Compute inflation step size by min size of element on a convex surface
3014 //================================================================================
3016 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
3018 if ( minSize < data._stepSize )
3020 data._stepSize = minSize;
3021 if ( data._stepSizeNodes[0] )
3024 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
3025 data._stepSizeCoeff = data._stepSize / dist;
3030 //================================================================================
3032 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
3034 //================================================================================
3036 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
3038 SMESH_MesherHelper helper( *_mesh );
3040 BRepLProp_SLProps surfProp( 2, 1e-6 );
3041 data._convexFaces.clear();
3043 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
3045 _EdgesOnShape& eof = data._edgesOnShape[iS];
3046 if ( eof.ShapeType() != TopAbs_FACE ||
3047 data._ignoreFaceIds.count( eof._shapeID ))
3050 TopoDS_Face F = TopoDS::Face( eof._shape );
3051 const TGeomID faceID = eof._shapeID;
3053 BRepAdaptor_Surface surface( F, false );
3054 surfProp.SetSurface( surface );
3056 _ConvexFace cnvFace;
3058 cnvFace._normalsFixed = false;
3059 cnvFace._isTooCurved = false;
3060 cnvFace._normalsFixedOnBorders = false;
3062 double maxCurvature = cnvFace.GetMaxCurvature( data, eof, surfProp, helper );
3063 if ( maxCurvature > 0 )
3065 limitStepSize( data, 0.9 / maxCurvature );
3066 findEdgesToUpdateNormalNearConvexFace( cnvFace, data, helper );
3068 if ( !cnvFace._isTooCurved ) continue;
3070 _ConvexFace & convFace =
3071 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
3073 // skip a closed surface (data._convexFaces is useful anyway)
3074 bool isClosedF = false;
3075 helper.SetSubShape( F );
3076 if ( helper.HasRealSeam() )
3078 // in the closed surface there must be a closed EDGE
3079 for ( TopExp_Explorer eIt( F, TopAbs_EDGE ); eIt.More() && !isClosedF; eIt.Next() )
3080 isClosedF = helper.IsClosedEdge( TopoDS::Edge( eIt.Current() ));
3084 // limit _LayerEdge::_maxLen on the FACE
3085 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
3086 const double minCurvature =
3087 1. / ( eof._hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
3088 map< TGeomID, _EdgesOnShape* >::iterator id2eos = cnvFace._subIdToEOS.find( faceID );
3089 if ( id2eos != cnvFace._subIdToEOS.end() )
3091 _EdgesOnShape& eos = * id2eos->second;
3092 for ( size_t i = 0; i < eos._edges.size(); ++i )
3094 _LayerEdge* ledge = eos._edges[ i ];
3095 gp_XY uv = helper.GetNodeUV( F, ledge->_nodes[0] );
3096 surfProp.SetParameters( uv.X(), uv.Y() );
3097 if ( surfProp.IsCurvatureDefined() )
3099 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
3100 surfProp.MinCurvature() * oriFactor );
3101 if ( curvature > minCurvature )
3102 ledge->SetMaxLen( Min( ledge->_maxLen, 1. / curvature ));
3109 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
3110 // prism distortion.
3111 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
3112 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
3114 // there are _LayerEdge's on the FACE it-self;
3115 // select _LayerEdge's near EDGEs
3116 _EdgesOnShape& eos = * id2eos->second;
3117 for ( size_t i = 0; i < eos._edges.size(); ++i )
3119 _LayerEdge* ledge = eos._edges[ i ];
3120 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
3121 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
3123 // do not select _LayerEdge's neighboring sharp EDGEs
3124 bool sharpNbr = false;
3125 for ( size_t iN = 0; iN < ledge->_neibors.size() && !sharpNbr; ++iN )
3126 sharpNbr = ( ledge->_neibors[iN]->_cosin > theMinSmoothCosin );
3128 convFace._simplexTestEdges.push_back( ledge );
3135 // where there are no _LayerEdge's on a _ConvexFace,
3136 // as e.g. on a fillet surface with no internal nodes - issue 22580,
3137 // so that collision of viscous internal faces is not detected by check of
3138 // intersection of _LayerEdge's with the viscous internal faces.
3140 set< const SMDS_MeshNode* > usedNodes;
3142 // look for _LayerEdge's with null _sWOL
3143 id2eos = convFace._subIdToEOS.begin();
3144 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
3146 _EdgesOnShape& eos = * id2eos->second;
3147 if ( !eos._sWOL.IsNull() )
3149 for ( size_t i = 0; i < eos._edges.size(); ++i )
3151 _LayerEdge* ledge = eos._edges[ i ];
3152 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
3153 if ( !usedNodes.insert( srcNode ).second ) continue;
3155 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
3157 usedNodes.insert( ledge->_simplices[i]._nPrev );
3158 usedNodes.insert( ledge->_simplices[i]._nNext );
3160 convFace._simplexTestEdges.push_back( ledge );
3164 } // loop on FACEs of data._solid
3167 //================================================================================
3169 * \brief Detect shapes (and _LayerEdge's on them) to smooth
3171 //================================================================================
3173 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
3175 // define allowed thickness
3176 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
3179 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
3180 // boundary inclined to the shape at a sharp angle
3182 TopTools_MapOfShape edgesOfSmooFaces;
3183 SMESH_MesherHelper helper( *_mesh );
3186 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3187 data._nbShapesToSmooth = 0;
3189 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3191 _EdgesOnShape& eos = edgesByGeom[iS];
3192 eos._toSmooth = false;
3193 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
3196 double tgtThick = eos._hyp.GetTotalThickness();
3197 SMESH_subMeshIteratorPtr subIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false );
3198 while ( subIt->more() && !eos._toSmooth )
3200 TGeomID iSub = subIt->next()->GetId();
3201 const vector<_LayerEdge*>& eSub = edgesByGeom[ iSub ]._edges;
3202 if ( eSub.empty() ) continue;
3205 for ( size_t i = 0; i < eSub.size() && !eos._toSmooth; ++i )
3206 if ( eSub[i]->_cosin > theMinSmoothCosin )
3208 SMDS_ElemIteratorPtr fIt = eSub[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
3209 while ( fIt->more() && !eos._toSmooth )
3211 const SMDS_MeshElement* face = fIt->next();
3212 if ( face->getshapeId() == eos._shapeID &&
3213 getDistFromEdge( face, eSub[i]->_nodes[0], faceSize ))
3215 eos._toSmooth = needSmoothing( eSub[i]->_cosin,
3216 tgtThick * eSub[i]->_lenFactor,
3222 if ( eos._toSmooth )
3224 for ( TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
3225 edgesOfSmooFaces.Add( eExp.Current() );
3227 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
3229 data._nbShapesToSmooth += eos._toSmooth;
3233 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
3235 _EdgesOnShape& eos = edgesByGeom[iS];
3236 eos._edgeSmoother = NULL;
3237 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
3238 if ( !eos._hyp.ToSmooth() ) continue;
3240 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
3241 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
3244 double tgtThick = eos._hyp.GetTotalThickness(), h0 = eos._hyp.Get1stLayerThickness();
3245 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
3247 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
3248 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
3249 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
3250 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ), h0 );
3251 double angle = eDir.Angle( eV[0]->_normal );
3252 double cosin = Cos( angle );
3253 double cosinAbs = Abs( cosin );
3254 if ( cosinAbs > theMinSmoothCosin )
3256 // always smooth analytic EDGEs
3257 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
3258 eos._toSmooth = ! curve.IsNull();
3260 // compare tgtThick with the length of an end segment
3261 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
3262 while ( eIt->more() && !eos._toSmooth )
3264 const SMDS_MeshElement* endSeg = eIt->next();
3265 if ( endSeg->getshapeId() == (int) iS )
3268 SMESH_TNodeXYZ( endSeg->GetNode( 0 )).Distance( endSeg->GetNode( 1 ));
3269 eos._toSmooth = needSmoothing( cosinAbs, tgtThick * eV[0]->_lenFactor, segLen );
3272 if ( eos._toSmooth )
3274 eos._edgeSmoother = new _Smoother1D( curve, eos );
3276 // for ( size_t i = 0; i < eos._edges.size(); ++i )
3277 // eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
3281 data._nbShapesToSmooth += eos._toSmooth;
3285 // Reset _cosin if no smooth is allowed by the user
3286 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
3288 _EdgesOnShape& eos = edgesByGeom[iS];
3289 if ( eos._edges.empty() ) continue;
3291 if ( !eos._hyp.ToSmooth() )
3292 for ( size_t i = 0; i < eos._edges.size(); ++i )
3293 //eos._edges[i]->SetCosin( 0 ); // keep _cosin to use in limitMaxLenByCurvature()
3294 eos._edges[i]->_lenFactor = 1;
3298 // Fill _eosC1 to make that C1 FACEs and EDGEs between them to be smoothed as a whole
3300 TopTools_MapOfShape c1VV;
3302 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3304 _EdgesOnShape& eos = edgesByGeom[iS];
3305 if ( eos._edges.empty() ||
3306 eos.ShapeType() != TopAbs_FACE ||
3310 // check EDGEs of a FACE
3311 TopTools_MapOfShape checkedEE, allVV;
3312 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
3313 while ( !smQueue.empty() )
3315 SMESH_subMesh* sm = smQueue.front();
3316 smQueue.pop_front();
3317 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3318 while ( smIt->more() )
3321 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
3322 allVV.Add( sm->GetSubShape() );
3323 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
3324 !checkedEE.Add( sm->GetSubShape() ))
3327 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
3328 vector<_LayerEdge*>& eE = eoe->_edges;
3329 if ( eE.empty() || !eoe->_sWOL.IsNull() )
3332 bool isC1 = true; // check continuity along an EDGE
3333 for ( size_t i = 0; i < eE.size() && isC1; ++i )
3334 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
3338 // check that mesh faces are C1 as well
3340 gp_XYZ norm1, norm2;
3341 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
3342 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
3343 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
3345 while ( fIt->more() && isC1 )
3346 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
3347 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
3352 // add the EDGE and an adjacent FACE to _eosC1
3353 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
3354 while ( const TopoDS_Shape* face = fIt->next() )
3356 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3357 if ( !eof ) continue; // other solid
3358 if ( eos._shapeID == eof->_shapeID ) continue;
3359 if ( !eos.HasC1( eof ))
3362 eos._eosC1.push_back( eof );
3363 eof->_toSmooth = false;
3364 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3365 smQueue.push_back( eof->_subMesh );
3367 if ( !eos.HasC1( eoe ))
3369 eos._eosC1.push_back( eoe );
3370 eoe->_toSmooth = false;
3371 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3376 if ( eos._eosC1.empty() )
3379 // check VERTEXes of C1 FACEs
3380 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3381 for ( ; vIt.More(); vIt.Next() )
3383 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3384 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3387 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3388 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3389 while ( const TopoDS_Shape* face = fIt->next() )
3391 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3392 if ( !eof ) continue; // other solid
3393 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3399 eos._eosC1.push_back( eov );
3400 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3401 c1VV.Add( eov->_shape );
3405 } // fill _eosC1 of FACEs
3410 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3412 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3414 _EdgesOnShape& eov = edgesByGeom[iS];
3415 if ( eov._edges.empty() ||
3416 eov.ShapeType() != TopAbs_VERTEX ||
3417 c1VV.Contains( eov._shape ))
3419 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3421 // get directions of surrounding EDGEs
3423 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3424 while ( const TopoDS_Shape* e = fIt->next() )
3426 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3427 if ( !eoe ) continue; // other solid
3428 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V, eoe->_hyp.Get1stLayerThickness() );
3429 if ( !Precision::IsInfinite( eDir.X() ))
3430 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3433 // find EDGEs with C1 directions
3434 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3435 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3436 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3438 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3439 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3442 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3443 for ( int isJ = 0; isJ < 2; ++isJ ) // loop on [i,j]
3445 size_t k = isJ ? j : i;
3446 const TopoDS_Edge& e = TopoDS::Edge( dirOfEdges[k].first->_shape );
3447 double eLen = SMESH_Algo::EdgeLength( e );
3448 if ( eLen < maxEdgeLen )
3450 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
3451 if ( oppV.IsSame( V ))
3452 oppV = SMESH_MesherHelper::IthVertex( 1, e );
3453 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
3454 if ( dirOfEdges[k].second * eovOpp->_edges[0]->_normal < 0 )
3455 eov._eosC1.push_back( dirOfEdges[k].first );
3457 dirOfEdges[k].first = 0;
3461 } // fill _eosC1 of VERTEXes
3468 //================================================================================
3470 * \brief Set up _SolidData::_edgesOnShape
3472 //================================================================================
3474 int _ViscousBuilder::makeEdgesOnShape()
3476 const int nbShapes = getMeshDS()->MaxShapeIndex();
3479 for ( size_t i = 0; i < _sdVec.size(); ++i )
3481 _SolidData& data = _sdVec[ i ];
3482 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3483 edgesByGeom.resize( nbShapes+1 );
3485 // set data of _EdgesOnShape's
3487 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
3489 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3490 while ( smIt->more() )
3493 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
3494 data._ignoreFaceIds.count( sm->GetId() ))
3497 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
3499 nbShapesWL += ( sm->GetSubShape().ShapeType() == TopAbs_FACE );
3502 if ( nbShapesWL == 0 ) // no shapes with layers in a SOLID
3505 SMESHUtils::FreeVector( edgesByGeom );
3515 //================================================================================
3517 * \brief initialize data of _EdgesOnShape
3519 //================================================================================
3521 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3525 if ( !eos._shape.IsNull() ||
3526 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3529 SMESH_MesherHelper helper( *_mesh );
3532 eos._shapeID = sm->GetId();
3533 eos._shape = sm->GetSubShape();
3534 if ( eos.ShapeType() == TopAbs_FACE )
3535 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3536 eos._toSmooth = false;
3538 eos._mapper2D = nullptr;
3541 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3542 data._shrinkShape2Shape.find( eos._shapeID );
3543 if ( s2s != data._shrinkShape2Shape.end() )
3544 eos._sWOL = s2s->second;
3546 eos._isRegularSWOL = true;
3547 if ( eos.SWOLType() == TopAbs_FACE )
3549 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3550 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3551 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3555 if ( data._hyps.size() == 1 )
3557 eos._hyp = data._hyps.back();
3561 // compute average StdMeshers_ViscousLayers parameters
3562 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3563 if ( eos.ShapeType() == TopAbs_FACE )
3565 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3566 eos._hyp = f2hyp->second;
3570 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3571 while ( const TopoDS_Shape* face = fIt->next() )
3573 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3574 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3575 eos._hyp.Add( f2hyp->second );
3581 if ( ! eos._hyp.UseSurfaceNormal() )
3583 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3585 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3586 if ( !smDS ) return;
3587 eos._faceNormals.reserve( smDS->NbElements() );
3589 double oriFactor = helper.IsReversedSubMesh( TopoDS::Face( eos._shape )) ? 1.: -1.;
3590 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3591 for ( ; eIt->more(); )
3593 const SMDS_MeshElement* face = eIt->next();
3594 gp_XYZ& norm = eos._faceNormals[face];
3595 if ( !SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
3596 norm.SetCoord( 0,0,0 );
3600 else // find EOS of adjacent FACEs
3602 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3603 while ( const TopoDS_Shape* face = fIt->next() )
3605 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3606 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3607 if ( eos._faceEOS.back()->_shape.IsNull() )
3608 // avoid using uninitialised _shapeID in GetNormal()
3609 eos._faceEOS.back()->_shapeID = faceID;
3615 //================================================================================
3617 * \brief Returns normal of a face
3619 //================================================================================
3621 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3624 _EdgesOnShape* eos = 0;
3626 if ( face->getshapeId() == _shapeID )
3632 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3633 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3634 eos = _faceEOS[ iF ];
3638 ( ok = ( eos->_faceNormals.count( face ) )))
3640 norm = eos->_faceNormals[ face ];
3644 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3645 << " on _shape #" << _shapeID );
3650 //================================================================================
3652 * \brief EdgesOnShape destructor
3654 //================================================================================
3656 _EdgesOnShape::~_EdgesOnShape()
3658 delete _edgeSmoother;
3662 //================================================================================
3664 * \brief Set data of _LayerEdge needed for smoothing
3666 //================================================================================
3668 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3670 SMESH_MesherHelper& helper,
3673 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3676 edge._maxLen = Precision::Infinite();
3679 edge._curvature = 0;
3681 edge._smooFunction = 0;
3683 // --------------------------
3684 // Compute _normal and _cosin
3685 // --------------------------
3688 edge._lenFactor = 1.;
3689 edge._normal.SetCoord(0,0,0);
3690 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3692 int totalNbFaces = 0;
3694 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3698 const bool onShrinkShape = !eos._sWOL.IsNull();
3699 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3700 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3702 // get geom FACEs the node lies on
3703 //if ( useGeometry )
3705 set<TGeomID> faceIds;
3706 if ( eos.ShapeType() == TopAbs_FACE )
3708 faceIds.insert( eos._shapeID );
3712 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3713 while ( fIt->more() )
3714 faceIds.insert( fIt->next()->getshapeId() );
3716 set<TGeomID>::iterator id = faceIds.begin();
3717 for ( ; id != faceIds.end(); ++id )
3719 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3720 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3722 F = TopoDS::Face( s );
3723 face2Norm[ totalNbFaces ].first = F;
3729 bool fromVonF = false;
3732 fromVonF = ( eos.ShapeType() == TopAbs_VERTEX &&
3733 eos.SWOLType() == TopAbs_FACE &&
3736 if ( onShrinkShape && !fromVonF ) // one of faces the node is on has no layers
3738 if ( eos.SWOLType() == TopAbs_EDGE )
3740 // inflate from VERTEX along EDGE
3741 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3742 eos._hyp.Get1stLayerThickness(), &eos._isRegularSWOL );
3744 else if ( eos.ShapeType() == TopAbs_VERTEX )
3746 // inflate from VERTEX along FACE
3747 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3748 node, helper, normOK/*, &edge._cosin*/);
3752 // inflate from EDGE along FACE
3753 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3754 node, helper, normOK);
3757 else // layers are on all FACEs of SOLID the node is on (or fromVonF)
3760 face2Norm[ totalNbFaces++ ].first = TopoDS::Face( eos._sWOL );
3763 for ( int iF = totalNbFaces - 1; iF >= 0; --iF )
3765 F = face2Norm[ iF ].first;
3766 geomNorm = getFaceNormal( node, F, helper, normOK );
3767 if ( !normOK ) continue;
3770 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3772 face2Norm[ iF ].second = geomNorm.XYZ();
3773 edge._normal += geomNorm.XYZ();
3775 if ( nbOkNorms == 0 )
3776 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3778 if ( totalNbFaces >= 3 )
3780 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces, fromVonF );
3783 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3785 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3786 edge._normal.SetCoord( 0,0,0 );
3787 for ( int iF = 0; iF < totalNbFaces - fromVonF; ++iF )
3789 const TopoDS_Face& F = face2Norm[iF].first;
3790 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3791 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3794 face2Norm[ iF ].second = geomNorm.XYZ();
3795 edge._normal += face2Norm[ iF ].second;
3800 else // !useGeometry - get _normal using surrounding mesh faces
3802 edge._normal = getWeigthedNormal( &edge );
3804 // set<TGeomID> faceIds;
3806 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3807 // while ( fIt->more() )
3809 // const SMDS_MeshElement* face = fIt->next();
3810 // if ( eos.GetNormal( face, geomNorm ))
3812 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3813 // continue; // use only one mesh face on FACE
3814 // edge._normal += geomNorm.XYZ();
3821 //if ( eos._hyp.UseSurfaceNormal() )
3823 switch ( eos.ShapeType() )
3830 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3831 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3832 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3833 edge._cosin = Cos( angle );
3836 case TopAbs_VERTEX: {
3837 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3838 gp_Vec inFaceDir = getFaceDir( face2Norm[0].first , V, node, helper, normOK );
3839 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3840 edge._cosin = Cos( angle );
3843 if ( totalNbFaces > 1 || helper.IsSeamShape( node->getshapeId() ))
3844 for ( int iF = 1; iF < totalNbFaces; ++iF )
3846 F = face2Norm[ iF ].first;
3847 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3849 if ( onShrinkShape )
3851 gp_Vec faceNorm = getFaceNormal( node, F, helper, normOK );
3852 if ( !normOK ) continue;
3853 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3855 angle = 0.5 * M_PI - faceNorm.Angle( edge._normal );
3856 if ( inFaceDir * edge._normal < 0 )
3857 angle = M_PI - angle;
3861 angle = inFaceDir.Angle( edge._normal );
3863 double cosin = Cos( angle );
3864 if ( Abs( cosin ) > Abs( edge._cosin ))
3865 edge._cosin = cosin;
3871 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3875 double normSize = edge._normal.SquareModulus();
3876 if ( normSize < numeric_limits<double>::min() )
3877 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3879 edge._normal /= sqrt( normSize );
3881 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3883 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3884 edge._nodes.resize( 1 );
3885 edge._normal.SetCoord( 0,0,0 );
3886 edge.SetMaxLen( 0 );
3889 // Set the rest data
3890 // --------------------
3892 double realLenFactor = edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3893 // if ( realLenFactor > 3 )
3896 // if ( onShrinkShape )
3898 // edge.Set( _LayerEdge::RISKY_SWOL );
3899 // edge._lenFactor = 2;
3903 // edge._lenFactor = 1;
3907 if ( onShrinkShape )
3909 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3910 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3911 sm->RemoveNode( tgtNode );
3913 // set initial position which is parameters on _sWOL in this case
3914 if ( eos.SWOLType() == TopAbs_EDGE )
3916 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3917 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3918 if ( edge._nodes.size() > 1 )
3919 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3921 else // eos.SWOLType() == TopAbs_FACE
3923 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3924 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3925 if ( edge._nodes.size() > 1 )
3926 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3929 //if ( edge._nodes.size() > 1 ) -- allow RISKY_SWOL on noShrink shape
3931 // check if an angle between a FACE with layers and SWOL is sharp,
3932 // else the edge should not inflate
3934 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3935 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3936 F = face2Norm[iF].first;
3939 geomNorm = getFaceNormal( node, F, helper, normOK );
3940 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3941 geomNorm.Reverse(); // inside the SOLID
3942 if ( geomNorm * edge._normal < -0.001 )
3944 if ( edge._nodes.size() > 1 )
3946 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3947 edge._nodes.resize( 1 );
3950 else if ( realLenFactor > 3 ) /// -- moved to SetCosin()
3951 //else if ( edge._lenFactor > 3 )
3953 edge._lenFactor = 2;
3954 edge.Set( _LayerEdge::RISKY_SWOL );
3961 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3963 if ( eos.ShapeType() == TopAbs_FACE )
3966 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3968 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3969 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3974 // Set neighbor nodes for a _LayerEdge based on EDGE
3976 if ( eos.ShapeType() == TopAbs_EDGE /*||
3977 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3979 edge._2neibors = _Factory::NewNearEdges();
3980 // target nodes instead of source ones will be set later
3986 //================================================================================
3988 * \brief Return normal to a FACE at a node
3989 * \param [in] n - node
3990 * \param [in] face - FACE
3991 * \param [in] helper - helper
3992 * \param [out] isOK - true or false
3993 * \param [in] shiftInside - to find normal at a position shifted inside the face
3994 * \return gp_XYZ - normal
3996 //================================================================================
3998 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3999 const TopoDS_Face& face,
4000 SMESH_MesherHelper& helper,
4007 // get a shifted position
4008 gp_Pnt p = SMESH_TNodeXYZ( node );
4009 gp_XYZ shift( 0,0,0 );
4010 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
4011 switch ( S.ShapeType() ) {
4014 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
4019 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
4027 p.Translate( shift * 1e-5 );
4029 TopLoc_Location loc;
4030 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
4032 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
4034 projector.Perform( p );
4035 if ( !projector.IsDone() || projector.NbPoints() < 1 )
4041 projector.LowerDistanceParameters(U,V);
4046 uv = helper.GetNodeUV( face, node, 0, &isOK );
4052 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
4054 if ( !shiftInside &&
4055 helper.IsDegenShape( node->getshapeId() ) &&
4056 getFaceNormalAtSingularity( uv, face, helper, normal ))
4059 return normal.XYZ();
4062 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
4063 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4065 if ( pointKind == IMPOSSIBLE &&
4066 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
4068 // probably NormEstim() failed due to a too high tolerance
4069 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
4070 isOK = ( pointKind < IMPOSSIBLE );
4072 if ( pointKind < IMPOSSIBLE )
4074 if ( pointKind != REGULAR &&
4076 node->GetPosition()->GetDim() < 2 ) // FACE boundary
4078 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
4079 if ( normShift * normal.XYZ() < 0. )
4085 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
4087 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
4089 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4090 while ( fIt->more() )
4092 const SMDS_MeshElement* f = fIt->next();
4093 if ( f->getshapeId() == faceID )
4095 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
4098 TopoDS_Face ff = face;
4099 ff.Orientation( TopAbs_FORWARD );
4100 if ( helper.IsReversedSubMesh( ff ))
4107 return normal.XYZ();
4110 //================================================================================
4112 * \brief Try to get normal at a singularity of a surface basing on it's nature
4114 //================================================================================
4116 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
4117 const TopoDS_Face& face,
4118 SMESH_MesherHelper& /*helper*/,
4121 BRepAdaptor_Surface surface( face );
4123 if ( !getRovolutionAxis( surface, axis ))
4126 double f,l, d, du, dv;
4127 f = surface.FirstUParameter();
4128 l = surface.LastUParameter();
4129 d = ( uv.X() - f ) / ( l - f );
4130 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4131 f = surface.FirstVParameter();
4132 l = surface.LastVParameter();
4133 d = ( uv.Y() - f ) / ( l - f );
4134 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4137 gp_Pnt2d testUV = uv;
4138 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4140 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
4141 for ( int iLoop = 0; true ; ++iLoop )
4143 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
4144 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
4151 if ( axis * refDir < 0. )
4159 //================================================================================
4161 * \brief Return a normal at a node weighted with angles taken by faces
4163 //================================================================================
4165 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
4167 const SMDS_MeshNode* n = edge->_nodes[0];
4169 gp_XYZ resNorm(0,0,0);
4170 SMESH_TNodeXYZ p0( n ), pP, pN;
4171 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
4173 pP.Set( edge->_simplices[i]._nPrev );
4174 pN.Set( edge->_simplices[i]._nNext );
4175 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
4176 double l0P = v0P.SquareMagnitude();
4177 double l0N = v0N.SquareMagnitude();
4178 double lPN = vPN.SquareMagnitude();
4179 if ( l0P < std::numeric_limits<double>::min() ||
4180 l0N < std::numeric_limits<double>::min() ||
4181 lPN < std::numeric_limits<double>::min() )
4183 double lNorm = norm.SquareMagnitude();
4184 double sin2 = lNorm / l0P / l0N;
4185 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
4187 double weight = sin2 * angle / lPN;
4188 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
4194 //================================================================================
4196 * \brief Return a normal at a node by getting a common point of offset planes
4197 * defined by the FACE normals
4199 //================================================================================
4201 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
4202 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
4206 SMESH_TNodeXYZ p0 = edge->_nodes[0];
4208 gp_XYZ resNorm(0,0,0);
4209 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
4210 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
4212 for ( int i = 0; i < nbFaces; ++i )
4213 resNorm += f2Normal[i].second;
4217 // prepare _OffsetPlane's
4218 vector< _OffsetPlane > pln( nbFaces );
4219 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4221 pln[i]._faceIndex = i;
4222 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
4226 pln[ nbFaces - 1 ]._faceIndex = nbFaces - 1;
4227 pln[ nbFaces - 1 ]._plane = gp_Pln( p0, f2Normal[ nbFaces - 1 ].second );
4230 // intersect neighboring OffsetPlane's
4231 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
4232 while ( const TopoDS_Shape* edge = edgeIt->next() )
4234 int f1 = -1, f2 = -1;
4235 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
4236 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
4237 (( f1 < 0 ) ? f1 : f2 ) = i;
4240 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ], TopoDS::Edge( *edge ), TopoDS::Vertex( V ));
4243 // get a common point
4244 gp_XYZ commonPnt( 0, 0, 0 );
4247 for ( int i = 0; i < nbFaces; ++i )
4249 commonPnt += pln[ i ].GetCommonPoint( isPointFound, TopoDS::Vertex( V ));
4250 nbPoints += isPointFound;
4252 gp_XYZ wgtNorm = getWeigthedNormal( edge );
4253 if ( nbPoints == 0 )
4256 commonPnt /= nbPoints;
4257 resNorm = commonPnt - p0;
4261 // choose the best among resNorm and wgtNorm
4262 resNorm.Normalize();
4263 wgtNorm.Normalize();
4264 double resMinDot = std::numeric_limits<double>::max();
4265 double wgtMinDot = std::numeric_limits<double>::max();
4266 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4268 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
4269 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
4272 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
4274 edge->Set( _LayerEdge::MULTI_NORMAL );
4277 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
4280 //================================================================================
4282 * \brief Compute line of intersection of 2 planes
4284 //================================================================================
4286 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln,
4287 const TopoDS_Edge& E,
4288 const TopoDS_Vertex& V )
4290 int iNext = bool( _faceIndexNext[0] >= 0 );
4291 _faceIndexNext[ iNext ] = pln._faceIndex;
4293 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
4294 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
4296 gp_XYZ lineDir = n1 ^ n2;
4298 double x = Abs( lineDir.X() );
4299 double y = Abs( lineDir.Y() );
4300 double z = Abs( lineDir.Z() );
4302 int cooMax; // max coordinate
4304 if (x > z) cooMax = 1;
4308 if (y > z) cooMax = 2;
4313 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
4315 // parallel planes - intersection is an offset of the common EDGE
4316 gp_Pnt p = BRep_Tool::Pnt( V );
4317 linePos = 0.5 * (( p.XYZ() + n1 ) + ( p.XYZ() + n2 ));
4318 lineDir = getEdgeDir( E, V, 0.1 * SMESH_Algo::EdgeLength( E ));
4322 // the constants in the 2 plane equations
4323 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
4324 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
4329 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
4330 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
4333 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
4335 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
4338 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
4339 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
4343 gp_Lin& line = _lines[ iNext ];
4344 line.SetDirection( lineDir );
4345 line.SetLocation ( linePos );
4347 _isLineOK[ iNext ] = true;
4350 iNext = bool( pln._faceIndexNext[0] >= 0 );
4351 pln._lines [ iNext ] = line;
4352 pln._faceIndexNext[ iNext ] = this->_faceIndex;
4353 pln._isLineOK [ iNext ] = true;
4356 //================================================================================
4358 * \brief Computes intersection point of two _lines
4360 //================================================================================
4362 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound,
4363 const TopoDS_Vertex & V) const
4368 if ( NbLines() == 2 )
4370 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
4371 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
4372 if ( Abs( dot01 ) > 0.05 )
4374 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
4375 double u1 = - ( lPerp0 * l0l1 ) / dot01;
4376 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
4381 gp_Pnt pV ( BRep_Tool::Pnt( V ));
4382 gp_Vec lv0( _lines[0].Location(), pV ), lv1(_lines[1].Location(), pV );
4383 double dot0( lv0 * _lines[0].Direction() ), dot1( lv1 * _lines[1].Direction() );
4384 p += 0.5 * ( _lines[0].Location().XYZ() + _lines[0].Direction().XYZ() * dot0 );
4385 p += 0.5 * ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * dot1 );
4393 //================================================================================
4395 * \brief Find 2 neighbor nodes of a node on EDGE
4397 //================================================================================
4399 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
4400 const SMDS_MeshNode*& n1,
4401 const SMDS_MeshNode*& n2,
4405 const SMDS_MeshNode* node = edge->_nodes[0];
4406 const int shapeInd = eos._shapeID;
4407 SMESHDS_SubMesh* edgeSM = 0;
4408 if ( eos.ShapeType() == TopAbs_EDGE )
4410 edgeSM = eos._subMesh->GetSubMeshDS();
4411 if ( !edgeSM || edgeSM->NbElements() == 0 )
4412 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
4416 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
4417 while ( eIt->more() && !n2 )
4419 const SMDS_MeshElement* e = eIt->next();
4420 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
4421 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
4424 if (!edgeSM->Contains(e)) continue;
4428 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
4429 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
4431 ( iN++ ? n2 : n1 ) = nNeibor;
4434 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
4438 //================================================================================
4440 * \brief Create _Curvature
4442 //================================================================================
4444 _Curvature* _Curvature::New( double avgNormProj, double avgDist )
4446 // double _r; // radius
4447 // double _k; // factor to correct node smoothed position
4448 // double _h2lenRatio; // avgNormProj / (2*avgDist)
4449 // gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
4452 if ( fabs( avgNormProj / avgDist ) > 1./200 )
4454 c = _Factory::NewCurvature();
4455 c->_r = avgDist * avgDist / avgNormProj;
4456 c->_k = avgDist * avgDist / c->_r / c->_r;
4457 //c->_k = avgNormProj / c->_r;
4458 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
4459 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
4461 c->_uv.SetCoord( 0., 0. );
4466 //================================================================================
4468 * \brief Set _curvature and _2neibors->_plnNorm by 2 neighbor nodes residing the same EDGE
4470 //================================================================================
4472 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
4473 const SMDS_MeshNode* n2,
4474 const _EdgesOnShape& eos,
4475 SMESH_MesherHelper& helper)
4477 if ( eos.ShapeType() != TopAbs_EDGE )
4479 if ( _curvature && Is( SMOOTHED_C1 ))
4482 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
4483 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
4484 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
4488 double sumLen = vec1.Modulus() + vec2.Modulus();
4489 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
4490 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
4491 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
4492 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
4493 _curvature = _Curvature::New( avgNormProj, avgLen );
4494 // if ( _curvature )
4495 // debugMsg( _nodes[0]->GetID()
4496 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
4497 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
4498 // << _curvature->lenDelta(0) );
4502 if ( eos._sWOL.IsNull() )
4504 TopoDS_Edge E = TopoDS::Edge( eos._shape );
4505 // if ( SMESH_Algo::isDegenerated( E ))
4507 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
4508 gp_XYZ plnNorm = dirE ^ _normal;
4509 double proj0 = plnNorm * vec1;
4510 double proj1 = plnNorm * vec2;
4511 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
4513 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
4514 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
4519 //================================================================================
4521 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4522 * this and the other _LayerEdge are inflated along a FACE or an EDGE
4524 //================================================================================
4526 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4528 SMESH_MesherHelper& helper )
4530 _nodes = other._nodes;
4531 _normal = other._normal;
4533 _lenFactor = other._lenFactor;
4534 _cosin = other._cosin;
4535 _2neibors = other._2neibors;
4536 _curvature = other._curvature;
4537 _2neibors = other._2neibors;
4538 _maxLen = Precision::Infinite();//other._maxLen;
4542 gp_XYZ lastPos( 0,0,0 );
4543 if ( eos.SWOLType() == TopAbs_EDGE )
4545 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4546 _pos.push_back( gp_XYZ( u, 0, 0));
4548 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4553 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4554 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4556 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4557 lastPos.SetX( uv.X() );
4558 lastPos.SetY( uv.Y() );
4563 //================================================================================
4565 * \brief Set _cosin and _lenFactor
4567 //================================================================================
4569 double _LayerEdge::SetCosin( double cosin )
4572 cosin = Abs( _cosin );
4573 //_lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4574 double realLenFactor;
4575 if ( cosin < 1.-1e-12 )
4577 _lenFactor = realLenFactor = 1./sqrt(1-cosin*cosin );
4582 realLenFactor = Precision::Infinite();
4585 return realLenFactor;
4588 //================================================================================
4590 * \brief Check if another _LayerEdge is a neighbor on EDGE
4592 //================================================================================
4594 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4596 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4597 ( edge->_2neibors && edge->_2neibors->include( this )));
4600 //================================================================================
4602 * \brief Fills a vector<_Simplex >
4604 //================================================================================
4606 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4607 vector<_Simplex>& simplices,
4608 const set<TGeomID>& ingnoreShapes,
4609 const _SolidData* dataToCheckOri,
4613 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4614 while ( fIt->more() )
4616 const SMDS_MeshElement* f = fIt->next();
4617 const TGeomID shapeInd = f->getshapeId();
4618 if ( ingnoreShapes.count( shapeInd )) continue;
4619 const int nbNodes = f->NbCornerNodes();
4620 const int srcInd = f->GetNodeIndex( node );
4621 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4622 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4623 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4624 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4625 std::swap( nPrev, nNext );
4626 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4630 SortSimplices( simplices );
4633 //================================================================================
4635 * \brief Set neighbor simplices side by side
4637 //================================================================================
4639 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4641 vector<_Simplex> sortedSimplices( simplices.size() );
4642 sortedSimplices[0] = simplices[0];
4644 for ( size_t i = 1; i < simplices.size(); ++i )
4646 for ( size_t j = 1; j < simplices.size(); ++j )
4647 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4649 sortedSimplices[i] = simplices[j];
4654 if ( nbFound == simplices.size() - 1 )
4655 simplices.swap( sortedSimplices );
4658 //================================================================================
4660 * \brief DEBUG. Create groups containing temporary data of _LayerEdge's
4662 //================================================================================
4664 void _ViscousBuilder::makeGroupOfLE()
4666 if (!SALOME::VerbosityActivated())
4669 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4671 if ( _sdVec[i]._n2eMap.empty() ) continue;
4673 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4674 TNode2Edge::iterator n2e;
4675 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4677 _LayerEdge* le = n2e->second;
4678 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4679 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4680 // << ", " << le->_nodes[iN]->GetID() <<"])");
4682 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4683 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4688 dumpFunction( SMESH_Comment("makeNormals") << i );
4689 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4691 _LayerEdge* edge = n2e->second;
4692 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4693 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4694 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4695 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4699 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4700 dumpCmd( "faceId1 = mesh.NbElements()" );
4701 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4702 for ( ; fExp.More(); fExp.Next() )
4704 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4706 if ( sm->NbElements() == 0 ) continue;
4707 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4708 while ( fIt->more())
4710 const SMDS_MeshElement* e = fIt->next();
4711 SMESH_Comment cmd("mesh.AddFace([");
4712 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4713 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4718 dumpCmd( "faceId2 = mesh.NbElements()" );
4719 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4720 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4721 << "'%s-%s' % (faceId1+1, faceId2))");
4726 //================================================================================
4728 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4730 //================================================================================
4732 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4734 data._geomSize = Precision::Infinite();
4735 double intersecDist;
4736 const SMDS_MeshElement* face;
4737 SMESH_MesherHelper helper( *_mesh );
4739 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4740 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4741 data._proxyMesh->GetFaces( data._solid )));
4743 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4745 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4746 if ( eos._edges.empty() )
4748 // get neighbor faces, intersection with which should not be considered since
4749 // collisions are avoided by means of smoothing
4750 set< TGeomID > neighborFaces;
4751 if ( eos._hyp.ToSmooth() )
4753 SMESH_subMeshIteratorPtr subIt =
4754 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4755 while ( subIt->more() )
4757 SMESH_subMesh* sm = subIt->next();
4758 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4759 while ( const TopoDS_Shape* face = fIt->next() )
4760 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4763 // find intersections
4764 double thinkness = eos._hyp.GetTotalThickness();
4765 for ( size_t i = 0; i < eos._edges.size(); ++i )
4767 if ( eos._edges[i]->_nodes.size() < 2 ) continue;
4768 eos._edges[i]->SetMaxLen( thinkness );
4769 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4770 if ( intersecDist > 0 && face )
4772 data._geomSize = Min( data._geomSize, intersecDist );
4773 if ( !neighborFaces.count( face->getshapeId() ))
4774 eos[i]->SetMaxLen( Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. )));
4779 data._maxThickness = 0;
4780 data._minThickness = 1e100;
4781 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
4782 for ( ; hyp != data._hyps.end(); ++hyp )
4784 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
4785 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
4788 // Limit inflation step size by geometry size found by intersecting
4789 // normals of _LayerEdge's with mesh faces
4790 if ( data._stepSize > 0.3 * data._geomSize )
4791 limitStepSize( data, 0.3 * data._geomSize );
4793 if ( data._stepSize > data._minThickness )
4794 limitStepSize( data, data._minThickness );
4797 // -------------------------------------------------------------------------
4798 // Detect _LayerEdge which can't intersect with opposite or neighbor layer,
4799 // so no need in detecting intersection at each inflation step
4800 // -------------------------------------------------------------------------
4802 int nbSteps = data._maxThickness / data._stepSize;
4803 if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 )
4806 vector< const SMDS_MeshElement* > closeFaces;
4809 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4811 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4812 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
4815 for ( size_t i = 0; i < eos.size(); ++i )
4817 SMESH_NodeXYZ p( eos[i]->_nodes[0] );
4818 double radius = data._maxThickness + 2 * eos[i]->_maxLen;
4820 searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces );
4822 bool toIgnore = true;
4823 for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF )
4824 if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID ||
4825 data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() ))))
4827 // check if a _LayerEdge will inflate in a direction opposite to a direction
4828 // toward a close face
4829 bool allBehind = true;
4830 for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN )
4832 SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN ));
4833 allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize );
4835 toIgnore = allBehind;
4839 if ( toIgnore ) // no need to detect intersection
4841 eos[i]->Set( _LayerEdge::INTERSECTED );
4847 debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected );
4852 //================================================================================
4854 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4856 //================================================================================
4858 bool _ViscousBuilder::inflate(_SolidData& data)
4860 SMESH_MesherHelper helper( *_mesh );
4862 const double tgtThick = data._maxThickness;
4864 if ( data._stepSize < 1. )
4865 data._epsilon = data._stepSize * 1e-7;
4867 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4870 findCollisionEdges( data, helper );
4872 limitMaxLenByCurvature( data, helper );
4876 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4877 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4878 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4879 data._edgesOnShape[i]._edges.size() > 0 &&
4880 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4882 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4883 data._edgesOnShape[i]._edges[0]->Block( data );
4886 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4888 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4889 int nbSteps = 0, nbRepeats = 0;
4890 while ( avgThick < 0.99 )
4892 // new target length
4893 double prevThick = curThick;
4894 curThick += data._stepSize;
4895 if ( curThick > tgtThick )
4897 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4901 double stepSize = curThick - prevThick;
4902 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4904 // Elongate _LayerEdge's
4905 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4906 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4908 _EdgesOnShape& eos = data._edgesOnShape[iS];
4909 if ( eos._edges.empty() ) continue;
4911 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4912 for ( size_t i = 0; i < eos._edges.size(); ++i )
4914 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4919 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4922 // Improve and check quality
4923 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4927 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4928 debugMsg("NOT INVALIDATED STEP!");
4929 return error("Smoothing failed", data._index);
4931 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4932 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4934 _EdgesOnShape& eos = data._edgesOnShape[iS];
4935 for ( size_t i = 0; i < eos._edges.size(); ++i )
4936 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4940 break; // no more inflating possible
4944 // Evaluate achieved thickness
4946 int nbActiveEdges = 0;
4947 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4949 _EdgesOnShape& eos = data._edgesOnShape[iS];
4950 if ( eos._edges.empty() ) continue;
4952 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4953 for ( size_t i = 0; i < eos._edges.size(); ++i )
4955 if ( eos._edges[i]->_nodes.size() > 1 )
4956 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4959 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4962 avgThick /= data._n2eMap.size();
4963 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4965 #ifdef BLOCK_INFLATION
4966 if ( nbActiveEdges == 0 )
4968 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4972 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4974 debugMsg( "-- Stop inflation since "
4975 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4976 << tgtThick * avgThick << " ) * " << safeFactor );
4982 limitStepSize( data, 0.25 * distToIntersection );
4983 if ( data._stepSizeNodes[0] )
4984 data._stepSize = data._stepSizeCoeff *
4985 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4987 } // while ( avgThick < 0.99 )
4990 return error("failed at the very first inflation step", data._index);
4992 if ( avgThick < 0.99 )
4994 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4996 data._proxyMesh->_warning.reset
4997 ( new SMESH_ComputeError (COMPERR_WARNING,
4998 SMESH_Comment("Thickness ") << tgtThick <<
4999 " of viscous layers not reached,"
5000 " average reached thickness is " << avgThick*tgtThick));
5004 // Restore position of src nodes moved by inflation on _noShrinkShapes
5005 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
5006 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5008 _EdgesOnShape& eos = data._edgesOnShape[iS];
5009 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
5010 for ( size_t i = 0; i < eos._edges.size(); ++i )
5012 restoreNoShrink( *eos._edges[ i ] );
5017 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
5020 //================================================================================
5022 * \brief Improve quality of layer inner surface and check intersection
5024 //================================================================================
5026 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
5028 double & distToIntersection)
5030 if ( data._nbShapesToSmooth == 0 )
5031 return true; // no shapes needing smoothing
5033 bool moved, improved;
5035 vector< _LayerEdge* > movedEdges, badEdges;
5036 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
5037 vector< bool > isConcaveFace;
5039 SMESH_MesherHelper helper(*_mesh);
5040 Handle(ShapeAnalysis_Surface) surface;
5043 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
5045 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
5047 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5049 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5050 if ( !eos._toSmooth ||
5051 eos.ShapeType() != shapeType ||
5052 eos._edges.empty() )
5055 // already smoothed?
5056 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
5057 // if ( !toSmooth ) continue;
5059 if ( !eos._hyp.ToSmooth() )
5061 // smooth disabled by the user; check validy only
5062 if ( !isFace ) continue;
5064 for ( size_t i = 0; i < eos._edges.size(); ++i )
5066 _LayerEdge* edge = eos._edges[i];
5067 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
5068 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
5070 // debugMsg( "-- Stop inflation. Bad simplex ("
5071 // << " "<< edge->_nodes[0]->GetID()
5072 // << " "<< edge->_nodes.back()->GetID()
5073 // << " "<< edge->_simplices[iF]._nPrev->GetID()
5074 // << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
5076 badEdges.push_back( edge );
5079 if ( !badEdges.empty() )
5083 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5087 continue; // goto the next EDGE or FACE
5091 if ( eos.SWOLType() == TopAbs_FACE )
5093 if ( !F.IsSame( eos._sWOL )) {
5094 F = TopoDS::Face( eos._sWOL );
5095 helper.SetSubShape( F );
5096 surface = helper.GetSurface( F );
5101 F.Nullify(); surface.Nullify();
5103 const TGeomID sInd = eos._shapeID;
5105 // perform smoothing
5107 if ( eos.ShapeType() == TopAbs_EDGE )
5109 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
5111 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
5113 // smooth on EDGE's (normally we should not get here)
5117 for ( size_t i = 0; i < eos._edges.size(); ++i )
5119 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
5121 dumpCmd( SMESH_Comment("# end step ")<<step);
5123 while ( moved && step++ < 5 );
5128 else // smooth on FACE
5131 eosC1.push_back( & eos );
5132 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
5135 isConcaveFace.resize( eosC1.size() );
5136 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5138 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
5140 if ( eosC1[ iEOS ]->_mapper2D )
5142 // compute node position by boundary node position in structured mesh
5143 dumpFunction(SMESH_Comment("map2dS")<<data._index<<"_Fa"<<eos._shapeID
5144 <<"_InfStep"<<infStep);
5146 eosC1[ iEOS ]->_mapper2D->ComputeNodePositions();
5148 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5149 le->_pos.back() = SMESH_NodeXYZ( le->_nodes.back() );
5155 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5156 if ( le->Is( _LayerEdge::MOVED ) ||
5157 le->Is( _LayerEdge::NEAR_BOUNDARY ))
5158 movedEdges.push_back( le );
5160 makeOffsetSurface( *eosC1[ iEOS ], helper );
5163 int step = 0, stepLimit = 5, nbBad = 0;
5164 while (( ++step <= stepLimit ) || improved )
5166 int oldBadNb = nbBad;
5169 #ifdef INCREMENTAL_SMOOTH
5170 // smooth moved only
5171 if ( !movedEdges.empty() )
5172 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5173 <<"_InfStep"<<infStep<<"_"<<step); // debug
5174 bool findBest = false; // ( step == stepLimit );
5175 for ( size_t i = 0; i < movedEdges.size(); ++i )
5177 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
5178 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
5179 badEdges.push_back( movedEdges[i] );
5183 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5184 <<"_InfStep"<<infStep<<"_"<<step); // debug
5185 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
5186 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5188 if ( eosC1[ iEOS ]->_mapper2D )
5190 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
5191 for ( size_t i = 0; i < edges.size(); ++i )
5193 edges[i]->Unset( _LayerEdge::SMOOTHED );
5194 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
5195 badEdges.push_back( eos._edges[i] );
5199 nbBad = badEdges.size();
5202 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5204 if ( !badEdges.empty() && step >= stepLimit / 2 )
5206 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
5209 // resolve hard smoothing situation around concave VERTEXes
5210 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5212 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
5213 for ( size_t i = 0; i < eosCoVe.size(); ++i )
5214 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
5217 // look for the best smooth of _LayerEdge's neighboring badEdges
5219 for ( size_t i = 0; i < badEdges.size(); ++i )
5221 _LayerEdge* ledge = badEdges[i];
5222 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
5224 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
5225 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
5227 ledge->Unset( _LayerEdge::SMOOTHED );
5228 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
5230 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5233 if ( nbBad == oldBadNb &&
5235 step < stepLimit ) // smooth w/o check of validity
5238 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
5239 <<"_InfStep"<<infStep<<"_"<<step); // debug
5240 for ( size_t i = 0; i < movedEdges.size(); ++i )
5242 movedEdges[i]->SmoothWoCheck();
5244 if ( stepLimit < 9 )
5248 improved = ( nbBad < oldBadNb );
5252 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
5253 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5255 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1, step, /*moveAll=*/step == 1 );
5258 } // smoothing steps
5260 // project -- to prevent intersections or to fix bad simplices
5261 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5263 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
5264 putOnOffsetSurface( *eosC1[ iEOS ], -infStep, eosC1 );
5267 //if ( !badEdges.empty() )
5270 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5272 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5274 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5276 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5277 edge->CheckNeiborsOnBoundary( & badEdges );
5278 if (( nbBad > 0 ) ||
5279 ( edge->Is( _LayerEdge::BLOCKED ) && edge->Is( _LayerEdge::NEAR_BOUNDARY )))
5281 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5282 gp_XYZ prevXYZ = edge->PrevCheckPos();
5283 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5284 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5286 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
5287 << " "<< tgtXYZ._node->GetID()
5288 << " "<< edge->_simplices[j]._nPrev->GetID()
5289 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5290 badEdges.push_back( edge );
5297 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5298 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5304 } // // smooth on FACE's
5306 } // smooth on [ EDGEs, FACEs ]
5308 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
5310 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5312 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5313 if ( eos.ShapeType() == TopAbs_FACE ||
5314 eos._edges.empty() ||
5315 !eos._sWOL.IsNull() )
5319 for ( size_t i = 0; i < eos._edges.size(); ++i )
5321 _LayerEdge* edge = eos._edges[i];
5322 if ( edge->_nodes.size() < 2 ) continue;
5323 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5324 //SMESH_TNodeXYZ prevXYZ = edge->_nodes[0];
5325 gp_XYZ prevXYZ = edge->PrevCheckPos( &eos );
5326 //const gp_XYZ& prevXYZ = edge->PrevPos();
5327 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5328 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5330 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
5331 << " "<< tgtXYZ._node->GetID()
5332 << " "<< edge->_simplices[j]._nPrev->GetID()
5333 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5334 badEdges.push_back( edge );
5339 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5341 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5347 // Check if the last segments of _LayerEdge intersects 2D elements;
5348 // checked elements are either temporary faces or faces on surfaces w/o the layers
5350 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
5351 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
5352 data._proxyMesh->GetFaces( data._solid )) );
5354 #ifdef BLOCK_INFLATION
5355 const bool toBlockInfaltion = true;
5357 const bool toBlockInfaltion = false;
5359 distToIntersection = Precision::Infinite();
5361 const SMDS_MeshElement* intFace = 0;
5362 const SMDS_MeshElement* closestFace = 0;
5364 bool is1stBlocked = true; // dbg
5365 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5367 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5368 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
5370 for ( size_t i = 0; i < eos._edges.size(); ++i )
5372 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
5373 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
5375 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5378 // commented due to "Illegal hash-positionPosition" error in NETGEN
5379 // on Debian60 on viscous_layers_01/B2 case
5380 // Collision; try to deflate _LayerEdge's causing it
5381 // badEdges.clear();
5382 // badEdges.push_back( eos._edges[i] );
5383 // eosC1[0] = & eos;
5384 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5388 // badEdges.clear();
5389 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5391 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5393 // const SMDS_MeshElement* srcFace =
5394 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
5395 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5396 // while ( nIt->more() )
5398 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5399 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5400 // if ( n2e != data._n2eMap.end() )
5401 // badEdges.push_back( n2e->second );
5404 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5409 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5416 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
5421 const bool isShorterDist = ( distToIntersection > dist );
5422 if ( toBlockInfaltion || isShorterDist )
5424 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
5425 // lying on this _ConvexFace
5426 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
5427 if ( convFace->_isTooCurved && convFace->_subIdToEOS.count ( eos._shapeID ))
5430 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
5431 // ( avoid limiting the thickness on the case of issue 22576)
5432 if ( intFace->getshapeId() == eos._shapeID )
5435 // ignore intersection with intFace of an adjacent FACE
5436 if ( dist > 0.01 * eos._edges[i]->_len )
5438 bool toIgnore = false;
5439 if ( eos._toSmooth )
5441 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
5442 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
5444 TopExp_Explorer sub( eos._shape,
5445 eos.ShapeType() == TopAbs_FACE ? TopAbs_EDGE : TopAbs_VERTEX );
5446 for ( ; !toIgnore && sub.More(); sub.Next() )
5447 // is adjacent - has a common EDGE or VERTEX
5448 toIgnore = ( helper.IsSubShape( sub.Current(), S ));
5450 if ( toIgnore ) // check angle between normals
5453 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
5454 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
5458 if ( !toIgnore ) // check if the edge is a neighbor of intFace
5460 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
5462 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
5463 toIgnore = ( nInd >= 0 );
5470 // intersection not ignored
5473 if ( eos._edges[i]->_maxLen < 0.99 * eos._hyp.GetTotalThickness() ) // limited length
5474 minDist = eos._edges[i]->_len * theThickToIntersection;
5476 if ( toBlockInfaltion && dist < minDist )
5478 if ( is1stBlocked ) { is1stBlocked = false; // debug
5479 dumpFunction(SMESH_Comment("blockIntersected") <<data._index<<"_InfStep"<<infStep);
5481 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
5482 eos._edges[i]->Block( data ); // not to inflate
5484 //if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5486 // block _LayerEdge's, on top of which intFace is
5487 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5489 const SMDS_MeshElement* srcFace = f->_srcFace;
5490 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5491 while ( nIt->more() )
5493 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5494 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5495 if ( n2e != data._n2eMap.end() )
5496 n2e->second->Block( data );
5502 if ( isShorterDist )
5504 distToIntersection = dist;
5506 closestFace = intFace;
5509 } // if ( toBlockInfaltion || isShorterDist )
5510 } // loop on eos._edges
5511 } // loop on data._edgesOnShape
5513 if ( !is1stBlocked )
5518 if ( closestFace && le )
5521 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
5522 cout << "#Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
5523 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
5524 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
5525 << ") distance = " << distToIntersection<< endl;
5532 //================================================================================
5534 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5535 * \param [in,out] badSmooEdges - _LayerEdge's to fix
5536 * \return int - resulting nb of bad _LayerEdge's
5538 //================================================================================
5540 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
5541 SMESH_MesherHelper& helper,
5542 vector< _LayerEdge* >& badSmooEdges,
5543 vector< _EdgesOnShape* >& eosC1,
5546 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
5548 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
5551 INVALIDATED = _LayerEdge::UNUSED_FLAG,
5552 TO_INVALIDATE = _LayerEdge::UNUSED_FLAG * 2,
5553 ADDED = _LayerEdge::UNUSED_FLAG * 4
5555 data.UnmarkEdges( TO_INVALIDATE & INVALIDATED & ADDED );
5558 bool haveInvalidated = true;
5559 while ( haveInvalidated )
5561 haveInvalidated = false;
5562 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5564 _LayerEdge* edge = badSmooEdges[i];
5565 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5567 bool invalidated = false;
5568 if ( edge->Is( TO_INVALIDATE ) && edge->NbSteps() > 1 )
5570 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5571 edge->Block( data );
5572 edge->Set( INVALIDATED );
5573 edge->Unset( TO_INVALIDATE );
5575 haveInvalidated = true;
5578 // look for _LayerEdge's of bad _simplices
5580 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5581 gp_XYZ prevXYZ1 = edge->PrevCheckPos( eos );
5582 //const gp_XYZ& prevXYZ2 = edge->PrevPos();
5583 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5585 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol ))/* &&
5586 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5590 _LayerEdge* ee[2] = { 0,0 };
5591 for ( size_t iN = 0; iN < edge->_neibors.size() && !ee[1] ; ++iN )
5592 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
5593 ee[ ee[0] != 0 ] = edge->_neibors[iN];
5595 int maxNbSteps = Max( ee[0]->NbSteps(), ee[1]->NbSteps() );
5596 while ( maxNbSteps > edge->NbSteps() && isBad )
5599 for ( int iE = 0; iE < 2; ++iE )
5601 if ( ee[ iE ]->NbSteps() > maxNbSteps &&
5602 ee[ iE ]->NbSteps() > 1 )
5604 _EdgesOnShape* eos = data.GetShapeEdges( ee[ iE ] );
5605 ee[ iE ]->InvalidateStep( ee[ iE ]->NbSteps(), *eos, /*restoreLength=*/true );
5606 ee[ iE ]->Block( data );
5607 ee[ iE ]->Set( INVALIDATED );
5608 haveInvalidated = true;
5611 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) /*&&
5612 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5616 if ( !ee[0]->Is( ADDED )) badSmooEdges.push_back( ee[0] );
5617 if ( !ee[1]->Is( ADDED )) badSmooEdges.push_back( ee[1] );
5618 ee[0]->Set( ADDED );
5619 ee[1]->Set( ADDED );
5622 ee[0]->Set( TO_INVALIDATE );
5623 ee[1]->Set( TO_INVALIDATE );
5627 if ( !invalidated && nbBad > 0 && edge->NbSteps() > 1 )
5629 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5630 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5631 edge->Block( data );
5632 edge->Set( INVALIDATED );
5633 edge->Unset( TO_INVALIDATE );
5634 haveInvalidated = true;
5636 } // loop on badSmooEdges
5637 } // while ( haveInvalidated )
5639 // re-smooth on analytical EDGEs
5640 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5642 _LayerEdge* edge = badSmooEdges[i];
5643 if ( !edge->Is( INVALIDATED )) continue;
5645 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5646 if ( eos->ShapeType() == TopAbs_VERTEX )
5648 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
5649 while ( const TopoDS_Shape* e = eIt->next() )
5650 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
5651 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
5653 // TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
5654 // if ( eoe->SWOLType() == TopAbs_FACE ) {
5655 // F = TopoDS::Face( eoe->_sWOL );
5656 // surface = helper.GetSurface( F );
5658 // eoe->_edgeSmoother->Perform( data, surface, F, helper );
5659 eoe->_edgeSmoother->_anaCurve.Nullify();
5665 // check result of invalidation
5668 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5670 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5672 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5673 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5674 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5675 gp_XYZ prevXYZ = edge->PrevCheckPos( eosC1[ iEOS ]);
5676 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5677 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5680 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
5681 << " "<< tgtXYZ._node->GetID()
5682 << " "<< edge->_simplices[j]._nPrev->GetID()
5683 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5692 //================================================================================
5694 * \brief Create an offset surface
5696 //================================================================================
5698 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
5700 if ( eos._offsetSurf.IsNull() ||
5701 eos._edgeForOffset == 0 ||
5702 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5705 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
5708 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
5709 /*gp_Pnt2d uv=*/baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
5710 eos._offsetValue = baseSurface->Gap();
5712 eos._offsetSurf.Nullify();
5716 BRepOffsetAPI_MakeOffsetShape offsetMaker;
5717 offsetMaker.PerformByJoin( eos._shape, -eos._offsetValue, Precision::Confusion() );
5718 if ( !offsetMaker.IsDone() ) return;
5720 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
5721 if ( !fExp.More() ) return;
5723 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5724 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5725 if ( surf.IsNull() ) return;
5727 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5729 catch ( Standard_Failure& )
5734 //================================================================================
5736 * \brief Put nodes of a curved FACE to its offset surface
5738 //================================================================================
5740 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5742 vector< _EdgesOnShape* >& eosC1,
5746 _EdgesOnShape * eof = & eos;
5747 if ( eos.ShapeType() != TopAbs_FACE ) // eos is a boundary of C1 FACE, look for the FACE eos
5750 for ( size_t i = 0; i < eosC1.size() && !eof; ++i )
5752 if ( eosC1[i]->_offsetSurf.IsNull() ||
5753 eosC1[i]->ShapeType() != TopAbs_FACE ||
5754 eosC1[i]->_edgeForOffset == 0 ||
5755 eosC1[i]->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5757 if ( SMESH_MesherHelper::IsSubShape( eos._shape, eosC1[i]->_shape ))
5762 eof->_offsetSurf.IsNull() ||
5763 eof->ShapeType() != TopAbs_FACE ||
5764 eof->_edgeForOffset == 0 ||
5765 eof->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5768 double preci = BRep_Tool::Tolerance( TopoDS::Face( eof->_shape )), vol;
5769 bool neighborHasRiskySWOL = false;
5770 for ( size_t i = 0; i < eos._edges.size(); ++i )
5772 _LayerEdge* edge = eos._edges[i];
5773 edge->Unset( _LayerEdge::MARKED );
5774 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5776 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5778 if ( !edge->Is( _LayerEdge::UPD_NORMAL_CONV ))
5781 else if ( moveAll == _LayerEdge::RISKY_SWOL )
5783 if ( !edge->Is( _LayerEdge::RISKY_SWOL ) ||
5787 else if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5790 int nbBlockedAround = 0;
5791 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5793 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5794 if ( edge->_neibors[iN]->Is( _LayerEdge::RISKY_SWOL ) &&
5795 edge->_neibors[iN]->_cosin > 0 )
5796 neighborHasRiskySWOL = true;
5798 if ( nbBlockedAround > 1 )
5801 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5802 gp_Pnt2d uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5803 if ( eof->_offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5804 edge->_curvature->_uv = uv;
5805 if ( eof->_offsetSurf->Gap() < 10 * preci ) continue; // same pos
5807 gp_XYZ newP = eof->_offsetSurf->Value( uv ).XYZ();
5808 gp_XYZ prevP = edge->PrevCheckPos();
5811 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5813 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5817 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5818 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5819 edge->_pos.back() = newP;
5821 edge->Set( _LayerEdge::MARKED );
5822 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5824 edge->_normal = ( newP - prevP ).Normalized();
5826 // if ( edge->_len < eof->_offsetValue )
5827 // edge->_len = eof->_offsetValue;
5829 if ( !eos._sWOL.IsNull() ) // RISKY_SWOL
5831 double change = eof->_offsetSurf->Gap() / eof->_offsetValue;
5832 if (( newP - tgtP.XYZ() ) * edge->_normal < 0 )
5833 change = 1 - change;
5835 change = 1 + change;
5836 gp_XYZ shitfVec = tgtP.XYZ() - SMESH_NodeXYZ( edge->_nodes[0] );
5837 gp_XYZ newShiftVec = shitfVec * change;
5838 double shift = edge->_normal * shitfVec;
5839 double newShift = edge->_normal * newShiftVec;
5840 newP = tgtP.XYZ() + edge->_normal * ( newShift - shift );
5842 uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, newP, preci );
5843 if ( eof->_offsetSurf->Gap() < edge->_len )
5845 edge->_curvature->_uv = uv;
5846 newP = eof->_offsetSurf->Value( uv ).XYZ();
5848 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5849 if ( !edge->UpdatePositionOnSWOL( n, /*tol=*/10 * edge->_len / ( edge->NbSteps() + 1 ),
5850 eos, eos.GetData().GetHelper() ))
5852 debugMsg("UpdatePositionOnSWOL fails in putOnOffsetSurface()" );
5858 if (SALOME::VerbosityActivated())
5860 // dumpMove() for debug
5862 for ( ; i < eos._edges.size(); ++i )
5863 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5865 if ( i < eos._edges.size() )
5867 dumpFunction(SMESH_Comment("putOnOffsetSurface_") << eos.ShapeTypeLetter() << eos._shapeID
5868 << "_InfStep" << infStep << "_" << Abs( smooStep ));
5869 for ( ; i < eos._edges.size(); ++i )
5871 if ( eos._edges[i]->Is( _LayerEdge::MARKED )) {
5872 dumpMove( eos._edges[i]->_nodes.back() );
5879 _ConvexFace* cnvFace;
5880 if ( moveAll != _LayerEdge::UPD_NORMAL_CONV &&
5881 eos.ShapeType() == TopAbs_FACE &&
5882 (cnvFace = eos.GetData().GetConvexFace( eos._shapeID )) &&
5883 !cnvFace->_normalsFixedOnBorders )
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::UPD_NORMAL_CONV );
5896 cnvFace->_normalsFixedOnBorders = true;
5901 // negative smooStep means "final step", where we don't treat RISKY_SWOL edges
5902 // as edges based on FACE are a bit late comparing with them
5903 if ( smooStep >= 0 &&
5904 neighborHasRiskySWOL &&
5905 moveAll != _LayerEdge::RISKY_SWOL &&
5906 eos.ShapeType() == TopAbs_FACE )
5908 // put on the surface nodes built on FACE boundaries
5909 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5910 while ( smIt->more() )
5912 SMESH_subMesh* sm = smIt->next();
5913 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5914 if ( subEOS->_sWOL.IsNull() ) continue;
5915 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5917 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::RISKY_SWOL );
5922 //================================================================================
5924 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5925 * _LayerEdge's to be in a consequent order
5927 //================================================================================
5929 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5931 SMESH_MesherHelper& helper)
5933 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5935 TopLoc_Location loc; double f,l;
5937 Handle(Geom_Line) line;
5938 Handle(Geom_Circle) circle;
5939 bool isLine, isCirc;
5940 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5942 // check if the EDGE is a line
5943 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5944 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5945 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5947 line = Handle(Geom_Line)::DownCast( curve );
5948 circle = Handle(Geom_Circle)::DownCast( curve );
5949 isLine = (!line.IsNull());
5950 isCirc = (!circle.IsNull());
5952 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5954 isLine = SMESH_Algo::IsStraight( E );
5957 line = new Geom_Line( gp::OX() ); // only type does matter
5959 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5964 else //////////////////////////////////////////////////////////////////////// 2D case
5966 if ( !eos._isRegularSWOL ) // 23190
5969 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5971 // check if the EDGE is a line
5972 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5973 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5974 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5976 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5977 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5978 isLine = (!line2d.IsNull());
5979 isCirc = (!circle2d.IsNull());
5981 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5984 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5985 while ( nIt->more() )
5986 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5987 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5989 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5990 for ( int i = 0; i < 2 && !isLine; ++i )
5991 isLine = ( size.Coord( i+1 ) <= lineTol );
5993 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5999 line = new Geom_Line( gp::OX() ); // only type does matter
6003 gp_Pnt2d p = circle2d->Location();
6004 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
6005 circle = new Geom_Circle( ax, 1.); // only center position does matter
6014 return Handle(Geom_Curve)();
6017 //================================================================================
6019 * \brief Smooth edges on EDGE
6021 //================================================================================
6023 bool _Smoother1D::Perform(_SolidData& data,
6024 Handle(ShapeAnalysis_Surface)& surface,
6025 const TopoDS_Face& F,
6026 SMESH_MesherHelper& helper )
6028 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
6031 findEdgesToSmooth();
6033 return smoothAnalyticEdge( data, surface, F, helper );
6035 return smoothComplexEdge ( data, surface, F, helper );
6038 //================================================================================
6040 * \brief Find edges to smooth
6042 //================================================================================
6044 void _Smoother1D::findEdgesToSmooth()
6046 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6047 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6048 if ( leOnV[iEnd]->Is( _LayerEdge::NORMAL_UPDATED ))
6049 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6051 _eToSmooth[0].first = _eToSmooth[0].second = 0;
6053 for ( size_t i = 0; i < _eos.size(); ++i )
6055 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6057 if ( needSmoothing( _leOnV[0]._cosin,
6058 _eos[i]->_len * leOnV[0]->_lenFactor, _curveLen * _leParams[i] ) ||
6061 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6065 _eToSmooth[0].second = i+1;
6068 _eToSmooth[1].first = _eToSmooth[1].second = _eos.size();
6070 for ( int i = _eos.size() - 1; i >= _eToSmooth[0].second; --i )
6072 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6074 if ( needSmoothing( _leOnV[1]._cosin,
6075 _eos[i]->_len * leOnV[1]->_lenFactor, _curveLen * ( 1.-_leParams[i] )) ||
6077 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6081 _eToSmooth[1].first = i;
6085 //================================================================================
6087 * \brief Check if iE-th _LayerEdge needs smoothing
6089 //================================================================================
6091 bool _Smoother1D::isToSmooth( int iE )
6093 SMESH_NodeXYZ pi( _eos[iE]->_nodes[0] );
6094 SMESH_NodeXYZ p0( _eos[iE]->_2neibors->srcNode(0) );
6095 SMESH_NodeXYZ p1( _eos[iE]->_2neibors->srcNode(1) );
6096 gp_XYZ seg0 = pi - p0;
6097 gp_XYZ seg1 = p1 - pi;
6098 gp_XYZ tangent = seg0 + seg1;
6099 double tangentLen = tangent.Modulus();
6100 double segMinLen = Min( seg0.Modulus(), seg1.Modulus() );
6101 if ( tangentLen < std::numeric_limits<double>::min() )
6103 tangent /= tangentLen;
6105 for ( size_t i = 0; i < _eos[iE]->_neibors.size(); ++i )
6107 _LayerEdge* ne = _eos[iE]->_neibors[i];
6108 if ( !ne->Is( _LayerEdge::TO_SMOOTH ) ||
6109 ne->_nodes.size() < 2 ||
6110 ne->_nodes[0]->GetPosition()->GetDim() != 2 )
6112 gp_XYZ edgeVec = SMESH_NodeXYZ( ne->_nodes.back() ) - SMESH_NodeXYZ( ne->_nodes[0] );
6113 double proj = edgeVec * tangent;
6114 if ( needSmoothing( 1., proj, segMinLen ))
6120 //================================================================================
6122 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
6124 //================================================================================
6126 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
6127 Handle(ShapeAnalysis_Surface)& surface,
6128 const TopoDS_Face& F,
6129 SMESH_MesherHelper& helper)
6131 if ( !isAnalytic() ) return false;
6133 size_t iFrom = 0, iTo = _eos._edges.size();
6135 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
6137 if ( F.IsNull() ) // 3D
6139 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
6140 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
6141 //const gp_XYZ lineDir = pSrc1 - pSrc0;
6142 //_LayerEdge* vLE0 = getLEdgeOnV( 0 );
6143 //_LayerEdge* vLE1 = getLEdgeOnV( 1 );
6144 // bool shiftOnly = ( vLE0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6145 // vLE0->Is( _LayerEdge::BLOCKED ) ||
6146 // vLE1->Is( _LayerEdge::NORMAL_UPDATED ) ||
6147 // vLE1->Is( _LayerEdge::BLOCKED ));
6148 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6150 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6151 if ( iFrom >= iTo ) continue;
6152 SMESH_TNodeXYZ p0( _eos[iFrom]->_2neibors->tgtNode(0) );
6153 SMESH_TNodeXYZ p1( _eos[iTo-1]->_2neibors->tgtNode(1) );
6154 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6155 double param1 = _leParams[ iTo ];
6156 for ( size_t i = iFrom; i < iTo; ++i )
6158 _LayerEdge* edge = _eos[i];
6159 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
6160 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6161 gp_XYZ newPos = p0 * ( 1. - param ) + p1 * param;
6163 // if ( shiftOnly || edge->Is( _LayerEdge::NORMAL_UPDATED ))
6165 // gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
6166 // double shift = ( lineDir * ( newPos - pSrc0 ) -
6167 // lineDir * ( curPos - pSrc0 ));
6168 // newPos = curPos + lineDir * shift / lineDir.SquareModulus();
6170 if ( edge->Is( _LayerEdge::BLOCKED ))
6172 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
6173 double curThick = pSrc.SquareDistance( tgtNode );
6174 double newThink = ( pSrc - newPos ).SquareModulus();
6175 if ( newThink > curThick )
6178 edge->_pos.back() = newPos;
6179 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6180 dumpMove( tgtNode );
6186 _LayerEdge* eV0 = getLEdgeOnV( 0 );
6187 _LayerEdge* eV1 = getLEdgeOnV( 1 );
6188 gp_XY uvV0 = eV0->LastUV( F, *data.GetShapeEdges( eV0 ));
6189 gp_XY uvV1 = eV1->LastUV( F, *data.GetShapeEdges( eV1 ));
6190 if ( eV0->_nodes.back() == eV1->_nodes.back() ) // closed edge
6192 int iPeriodic = helper.GetPeriodicIndex();
6193 if ( iPeriodic == 1 || iPeriodic == 2 )
6195 uvV1.SetCoord( iPeriodic, helper.GetOtherParam( uvV1.Coord( iPeriodic )));
6196 if ( uvV0.Coord( iPeriodic ) > uvV1.Coord( iPeriodic ))
6197 std::swap( uvV0, uvV1 );
6200 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6202 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6203 if ( iFrom >= iTo ) continue;
6204 _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0];
6205 _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1];
6206 gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos );
6207 gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos );
6208 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6209 double param1 = _leParams[ iTo ];
6210 gp_XY rangeUV = uv1 - uv0;
6211 for ( size_t i = iFrom; i < iTo; ++i )
6213 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6214 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6215 gp_XY newUV = uv0 + param * rangeUV;
6217 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6218 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6219 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6220 dumpMove( tgtNode );
6222 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6224 pos->SetUParameter( newUV.X() );
6225 pos->SetVParameter( newUV.Y() );
6228 gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 );
6230 if ( !_eos[i]->Is( _LayerEdge::SMOOTHED ))
6232 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6233 if ( _eos[i]->_pos.size() > 2 )
6235 // modify previous positions to make _LayerEdge less sharply bent
6236 vector<gp_XYZ>& uvVec = _eos[i]->_pos;
6237 const gp_XYZ uvShift = newUV0 - uvVec.back();
6238 const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus();
6239 int iPrev = uvVec.size() - 2;
6242 double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2;
6243 uvVec[ iPrev ] += uvShift * r;
6248 _eos[i]->_pos.back() = newUV0;
6255 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
6257 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
6258 gp_Pnt center3D = circle->Location();
6260 if ( F.IsNull() ) // 3D
6262 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
6263 return true; // closed EDGE - nothing to do
6265 // circle is a real curve of EDGE
6266 gp_Circ circ = circle->Circ();
6268 // new center is shifted along its axis
6269 const gp_Dir& axis = circ.Axis().Direction();
6270 _LayerEdge* e0 = getLEdgeOnV(0);
6271 _LayerEdge* e1 = getLEdgeOnV(1);
6272 SMESH_TNodeXYZ p0 = e0->_nodes.back();
6273 SMESH_TNodeXYZ p1 = e1->_nodes.back();
6274 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
6275 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
6276 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
6278 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
6280 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
6281 gp_Circ newCirc( newAxis, newRadius );
6282 gp_Vec vecC1 ( newCenter, p1 );
6284 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
6288 for ( size_t i = 0; i < _eos.size(); ++i )
6290 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6291 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6292 double u = uLast * _leParams[i];
6293 gp_Pnt p = ElCLib::Value( u, newCirc );
6294 _eos._edges[i]->_pos.back() = p.XYZ();
6296 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6297 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6298 dumpMove( tgtNode );
6304 const gp_XY center( center3D.X(), center3D.Y() );
6306 _LayerEdge* e0 = getLEdgeOnV(0);
6307 _LayerEdge* eM = _eos._edges[ 0 ];
6308 _LayerEdge* e1 = getLEdgeOnV(1);
6309 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
6310 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
6311 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
6312 gp_Vec2d vec0( center, uv0 );
6313 gp_Vec2d vecM( center, uvM );
6314 gp_Vec2d vec1( center, uv1 );
6315 double uLast = vec0.Angle( vec1 ); // -PI - +PI
6316 double uMidl = vec0.Angle( vecM );
6317 if ( uLast * uMidl <= 0. )
6318 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
6319 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
6321 gp_Ax2d axis( center, vec0 );
6322 gp_Circ2d circ( axis, radius );
6323 for ( size_t i = 0; i < _eos.size(); ++i )
6325 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6326 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6327 double newU = uLast * _leParams[i];
6328 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
6329 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
6331 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6332 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6333 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6334 dumpMove( tgtNode );
6336 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6338 pos->SetUParameter( newUV.X() );
6339 pos->SetVParameter( newUV.Y() );
6341 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6350 //================================================================================
6352 * \brief smooth _LayerEdge's on a an EDGE
6354 //================================================================================
6356 bool _Smoother1D::smoothComplexEdge( _SolidData& /*data*/,
6357 Handle(ShapeAnalysis_Surface)& surface,
6358 const TopoDS_Face& F,
6359 SMESH_MesherHelper& /*helper*/)
6361 if ( _offPoints.empty() )
6364 // ----------------------------------------------
6365 // move _offPoints along normals of _LayerEdge's
6366 // ----------------------------------------------
6368 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6369 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED ))
6370 _leOnV[0]._normal = getNormalNormal( e[0]->_normal, _edgeDir[0] );
6371 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED ))
6372 _leOnV[1]._normal = getNormalNormal( e[1]->_normal, _edgeDir[1] );
6373 _leOnV[0]._len = e[0]->_len;
6374 _leOnV[1]._len = e[1]->_len;
6375 for ( size_t i = 0; i < _offPoints.size(); i++ )
6377 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6378 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6379 const double w0 = _offPoints[i]._2edges._wgt[0];
6380 const double w1 = _offPoints[i]._2edges._wgt[1];
6381 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
6382 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6383 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
6384 if ( e0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6385 e1->Is( _LayerEdge::NORMAL_UPDATED ))
6386 avgNorm = getNormalNormal( avgNorm, _offPoints[i]._edgeDir );
6388 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
6389 _offPoints[i]._len = avgLen;
6393 if ( !surface.IsNull() ) // project _offPoints to the FACE
6395 fTol = 100 * BRep_Tool::Tolerance( F );
6396 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
6398 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
6399 //if ( surface->Gap() < 0.5 * segLen )
6400 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
6402 for ( size_t i = 1; i < _offPoints.size(); ++i )
6404 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
6405 //if ( surface->Gap() < 0.5 * segLen )
6406 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
6410 // -----------------------------------------------------------------
6411 // project tgt nodes of extreme _LayerEdge's to the offset segments
6412 // -----------------------------------------------------------------
6414 const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED;
6415 if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0;
6416 if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2;
6418 gp_Pnt pExtreme[2], pProj[2];
6419 bool isProjected[2];
6420 for ( int is2nd = 0; is2nd < 2; ++is2nd )
6422 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
6423 int i = _iSeg[ is2nd ];
6424 int di = is2nd ? -1 : +1;
6425 bool & projected = isProjected[ is2nd ];
6427 double uOnSeg, distMin = Precision::Infinite(), dist, distPrev = 0;
6430 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
6431 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
6432 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude(); // param [0,1] along v01
6433 projected = ( Abs( uOnSeg - 0.5 ) <= 0.5 );
6434 dist = pExtreme[ is2nd ].SquareDistance( _offPoints[ i + ( uOnSeg > 0.5 )]._xyz );
6435 if ( dist < distMin || projected )
6438 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
6441 else if ( dist > distPrev )
6443 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
6449 while ( !projected &&
6450 i >= 0 && i+1 < (int)_offPoints.size() );
6454 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
6457 _iSeg[1] = _offPoints.size()-2;
6458 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
6463 if ( _iSeg[0] > _iSeg[1] )
6465 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
6469 // adjust length of extreme LE (test viscous_layers_01/B7)
6470 gp_Vec vDiv0( pExtreme[0], pProj[0] );
6471 gp_Vec vDiv1( pExtreme[1], pProj[1] );
6472 double d0 = vDiv0.Magnitude();
6473 double d1 = isProjected[1] ? vDiv1.Magnitude() : 0;
6474 if ( e[0]->Is( _LayerEdge::BLOCKED )) {
6475 if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0;
6476 else e[0]->_len -= d0;
6478 if ( e[1]->Is( _LayerEdge::BLOCKED )) {
6479 if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1;
6480 else e[1]->_len -= d1;
6483 // ---------------------------------------------------------------------------------
6484 // compute normalized length of the offset segments located between the projections
6485 // ---------------------------------------------------------------------------------
6487 // temporary replace extreme _offPoints by pExtreme
6488 gp_XYZ opXYZ[2] = { _offPoints[ _iSeg[0] ]._xyz,
6489 _offPoints[ _iSeg[1]+1 ]._xyz };
6490 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
6491 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
6493 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
6494 vector< double > len( nbSeg + 1 );
6496 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
6497 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
6499 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
6501 // if ( isProjected[ 1 ])
6502 // len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6504 // len[ nbSeg ] += pExtreme[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6506 double fullLen = len.back() - d0 - d1;
6507 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
6508 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
6510 // -------------------------------------------------------------
6511 // distribute tgt nodes of _LayerEdge's between the projections
6512 // -------------------------------------------------------------
6515 for ( size_t i = 0; i < _eos.size(); ++i )
6517 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6518 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6519 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
6521 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
6522 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
6523 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
6525 if ( surface.IsNull() )
6527 _eos[i]->_pos.back() = p;
6529 else // project a new node position to a FACE
6531 gp_Pnt2d uv ( _eos[i]->_pos.back().X(), _eos[i]->_pos.back().Y() );
6532 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
6534 p = surface->Value( uv2 ).XYZ();
6535 _eos[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
6537 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6538 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6539 dumpMove( tgtNode );
6542 _offPoints[ _iSeg[0] ]._xyz = opXYZ[0];
6543 _offPoints[ _iSeg[1]+1 ]._xyz = opXYZ[1];
6548 //================================================================================
6550 * \brief Prepare for smoothing
6552 //================================================================================
6554 void _Smoother1D::prepare(_SolidData& data)
6556 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
6557 _curveLen = SMESH_Algo::EdgeLength( E );
6559 // sort _LayerEdge's by position on the EDGE
6560 data.SortOnEdge( E, _eos._edges );
6562 // compute normalized param of _eos._edges on EDGE
6563 _leParams.resize( _eos._edges.size() + 1 );
6566 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
6568 for ( size_t i = 0; i < _eos._edges.size(); ++i )
6570 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
6571 curLen = p.Distance( pPrev );
6572 _leParams[i+1] = _leParams[i] + curLen;
6575 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
6576 for ( size_t i = 0; i < _leParams.size()-1; ++i )
6577 _leParams[i] = _leParams[i+1] / fullLen;
6578 _leParams.back() = 1.;
6581 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6583 // get cosin to use in findEdgesToSmooth()
6584 _edgeDir[0] = getEdgeDir( E, leOnV[0]->_nodes[0], data.GetHelper() );
6585 _edgeDir[1] = getEdgeDir( E, leOnV[1]->_nodes[0], data.GetHelper() );
6586 _leOnV[0]._cosin = Abs( leOnV[0]->_cosin );
6587 _leOnV[1]._cosin = Abs( leOnV[1]->_cosin );
6588 _leOnV[0]._flags = _leOnV[1]._flags = 0;
6589 if ( _eos._sWOL.IsNull() ) // 3D
6590 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6591 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6596 // divide E to have offset segments with low deflection
6597 BRepAdaptor_Curve c3dAdaptor( E );
6598 const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2|*sin(p1p2,p1pM)
6599 const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2)
6600 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
6601 if ( discret.NbPoints() <= 2 )
6603 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
6607 const double u0 = c3dAdaptor.FirstParameter();
6608 gp_Pnt p; gp_Vec tangent;
6609 if ( discret.NbPoints() >= (int) _eos.size() + 2 )
6611 _offPoints.resize( discret.NbPoints() );
6612 for ( size_t i = 0; i < _offPoints.size(); i++ )
6614 double u = discret.Parameter( i+1 );
6615 c3dAdaptor.D1( u, p, tangent );
6616 _offPoints[i]._xyz = p.XYZ();
6617 _offPoints[i]._edgeDir = tangent.XYZ();
6618 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6623 std::vector< double > params( _eos.size() + 2 );
6625 params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] );
6626 params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] );
6627 for ( size_t i = 0; i < _eos.size(); i++ )
6628 params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] );
6630 if ( params[1] > params[ _eos.size() ] )
6631 std::reverse( params.begin() + 1, params.end() - 1 );
6633 _offPoints.resize( _eos.size() + 2 );
6634 for ( size_t i = 0; i < _offPoints.size(); i++ )
6636 const double u = params[i];
6637 c3dAdaptor.D1( u, p, tangent );
6638 _offPoints[i]._xyz = p.XYZ();
6639 _offPoints[i]._edgeDir = tangent.XYZ();
6640 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6645 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
6646 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
6647 _2NearEdges tmp2edges;
6648 tmp2edges._edges[1] = _eos._edges[0];
6649 _leOnV[0]._2neibors = & tmp2edges;
6650 _leOnV[0]._nodes = leOnV[0]->_nodes;
6651 _leOnV[1]._nodes = leOnV[1]->_nodes;
6652 _LayerEdge* eNext, *ePrev = & _leOnV[0];
6653 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
6655 // find _LayerEdge's located before and after an offset point
6656 // (_eos._edges[ iLE ] is next after ePrev)
6657 while ( iLE < _eos._edges.size() && _offPoints[i]._param > _leParams[ iLE ] )
6658 ePrev = _eos._edges[ iLE++ ];
6659 eNext = ePrev->_2neibors->_edges[1];
6661 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
6662 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
6663 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
6664 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
6667 // replace _LayerEdge's on VERTEX by _leOnV in _offPoints._2edges
6668 for ( size_t i = 0; i < _offPoints.size(); i++ )
6669 if ( _offPoints[i]._2edges._edges[0] == leOnV[0] )
6670 _offPoints[i]._2edges._edges[0] = & _leOnV[0];
6672 for ( size_t i = _offPoints.size()-1; i > 0; i-- )
6673 if ( _offPoints[i]._2edges._edges[1] == leOnV[1] )
6674 _offPoints[i]._2edges._edges[1] = & _leOnV[1];
6677 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
6679 int iLBO = _offPoints.size() - 2; // last but one
6681 if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL ))
6682 _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] );
6684 _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] );
6685 if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL ))
6686 _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] );
6688 _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] );
6689 _leOnV[ 0 ]._len = 0;
6690 _leOnV[ 1 ]._len = 0;
6691 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
6692 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
6695 _iSeg[1] = _offPoints.size()-2;
6697 // initialize OffPnt::_len
6698 for ( size_t i = 0; i < _offPoints.size(); ++i )
6699 _offPoints[i]._len = 0;
6701 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
6703 _leOnV[0]._len = leOnV[0]->_len;
6704 _leOnV[1]._len = leOnV[1]->_len;
6705 for ( size_t i = 0; i < _offPoints.size(); i++ )
6707 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6708 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6709 const double w0 = _offPoints[i]._2edges._wgt[0];
6710 const double w1 = _offPoints[i]._2edges._wgt[1];
6711 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6712 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
6713 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
6714 _offPoints[i]._xyz = avgXYZ;
6715 _offPoints[i]._len = avgLen;
6720 //================================================================================
6722 * \brief return _normal of _leOnV[is2nd] normal to the EDGE
6724 //================================================================================
6726 gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal,
6727 const gp_XYZ& edgeDir)
6729 gp_XYZ cross = normal ^ edgeDir;
6730 gp_XYZ norm = edgeDir ^ cross;
6731 double size = norm.Modulus();
6733 // if ( size == 0 ) // MULTI_NORMAL _LayerEdge
6734 // return gp_XYZ( 1e-100, 1e-100, 1e-100 );
6736 if ( size < 1e-5 ) // normal || edgeDir (almost) at inflation along EDGE (bos #20643)
6738 const _LayerEdge* le = _eos._edges[ _eos._edges.size() / 2 ];
6739 const gp_XYZ& leNorm = le->_normal;
6741 cross = leNorm ^ edgeDir;
6742 norm = edgeDir ^ cross;
6743 size = norm.Modulus();
6749 //================================================================================
6751 * \brief Writes a script creating a mesh composed of _offPoints
6753 //================================================================================
6755 void _Smoother1D::offPointsToPython() const
6757 const char* fname = "/tmp/offPoints.py";
6758 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
6760 py << "import SMESH" << endl
6761 << "from salome.smesh import smeshBuilder" << endl
6762 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
6763 << "mesh = smesh.Mesh( 'offPoints' )"<<endl;
6764 for ( size_t i = 0; i < _offPoints.size(); i++ )
6766 py << "mesh.AddNode( "
6767 << _offPoints[i]._xyz.X() << ", "
6768 << _offPoints[i]._xyz.Y() << ", "
6769 << _offPoints[i]._xyz.Z() << " )" << endl;
6773 //================================================================================
6775 * \brief Sort _LayerEdge's by a parameter on a given EDGE
6777 //================================================================================
6779 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
6780 vector< _LayerEdge* >& edges)
6782 map< double, _LayerEdge* > u2edge;
6783 for ( size_t i = 0; i < edges.size(); ++i )
6784 u2edge.insert( u2edge.end(),
6785 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
6787 ASSERT( u2edge.size() == edges.size() );
6788 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
6789 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
6790 edges[i] = u2e->second;
6792 Sort2NeiborsOnEdge( edges );
6795 //================================================================================
6797 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
6799 //================================================================================
6801 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
6803 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
6805 for ( size_t i = 0; i < edges.size()-1; ++i )
6806 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
6807 edges[i]->_2neibors->reverse();
6809 const size_t iLast = edges.size() - 1;
6810 if ( edges.size() > 1 &&
6811 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
6812 edges[iLast]->_2neibors->reverse();
6815 //================================================================================
6817 * \brief Return _EdgesOnShape* corresponding to the shape
6819 //================================================================================
6821 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
6823 if ( shapeID < (int)_edgesOnShape.size() &&
6824 _edgesOnShape[ shapeID ]._shapeID == shapeID )
6825 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
6827 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
6828 if ( _edgesOnShape[i]._shapeID == shapeID )
6829 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
6834 //================================================================================
6836 * \brief Return _EdgesOnShape* corresponding to the shape
6838 //================================================================================
6840 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
6842 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
6843 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
6846 //================================================================================
6848 * \brief Prepare data of the _LayerEdge for smoothing on FACE
6850 //================================================================================
6852 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
6854 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
6856 set< TGeomID > vertices;
6858 if ( eos->ShapeType() == TopAbs_FACE )
6860 // check FACE concavity and get concave VERTEXes
6861 F = TopoDS::Face( eos->_shape );
6862 if ( isConcave( F, helper, &vertices ))
6863 _concaveFaces.insert( eos->_shapeID );
6865 // set eos._eosConcaVer
6866 eos->_eosConcaVer.clear();
6867 eos->_eosConcaVer.reserve( vertices.size() );
6868 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
6870 _EdgesOnShape* eov = GetShapeEdges( *v );
6871 if ( eov && eov->_edges.size() == 1 )
6873 eos->_eosConcaVer.push_back( eov );
6874 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
6875 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
6879 // SetSmooLen() to _LayerEdge's on FACE
6880 // for ( size_t i = 0; i < eos->_edges.size(); ++i )
6882 // eos->_edges[i]->SetSmooLen( Precision::Infinite() );
6884 // SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6885 // while ( smIt->more() ) // loop on sub-shapes of the FACE
6887 // _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
6888 // if ( !eoe ) continue;
6890 // vector<_LayerEdge*>& eE = eoe->_edges;
6891 // for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
6893 // if ( eE[iE]->_cosin <= theMinSmoothCosin )
6896 // SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
6897 // while ( segIt->more() )
6899 // const SMDS_MeshElement* seg = segIt->next();
6900 // if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
6902 // if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
6903 // continue; // not to check a seg twice
6904 // for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
6906 // _LayerEdge* eN = eE[iE]->_neibors[iN];
6907 // if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
6909 // double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
6910 // double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
6911 // eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
6912 // eN->Set( _LayerEdge::NEAR_BOUNDARY );
6917 } // if ( eos->ShapeType() == TopAbs_FACE )
6919 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6921 eos->_edges[i]->_smooFunction = 0;
6922 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
6924 bool isCurved = false;
6925 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6927 _LayerEdge* edge = eos->_edges[i];
6929 // get simplices sorted
6930 _Simplex::SortSimplices( edge->_simplices );
6932 // smoothing function
6933 edge->ChooseSmooFunction( vertices, _n2eMap );
6936 double avgNormProj = 0, avgLen = 0;
6937 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
6939 _Simplex& s = edge->_simplices[iS];
6941 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
6942 avgNormProj += edge->_normal * vec;
6943 avgLen += vec.Modulus();
6944 if ( substituteSrcNodes )
6946 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
6947 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
6950 avgNormProj /= edge->_simplices.size();
6951 avgLen /= edge->_simplices.size();
6952 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
6954 edge->Set( _LayerEdge::SMOOTHED_C1 );
6956 SMDS_FacePositionPtr fPos = edge->_nodes[0]->GetPosition();
6958 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
6959 fPos = edge->_simplices[iS]._nPrev->GetPosition();
6961 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
6965 // prepare for putOnOffsetSurface()
6966 if (( eos->ShapeType() == TopAbs_FACE ) &&
6967 ( isCurved || !eos->_eosConcaVer.empty() ))
6969 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
6970 eos->_edgeForOffset = 0;
6972 double maxCosin = -1;
6973 //bool hasNoShrink = false;
6974 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
6976 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
6977 if ( !eoe || eoe->_edges.empty() ) continue;
6979 // if ( eos->GetData()._noShrinkShapes.count( eoe->_shapeID ))
6980 // hasNoShrink = true;
6982 vector<_LayerEdge*>& eE = eoe->_edges;
6983 _LayerEdge* e = eE[ eE.size() / 2 ];
6984 if ( !e->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > maxCosin )
6986 eos->_edgeForOffset = e;
6987 maxCosin = e->_cosin;
6990 if ( !eoe->_sWOL.IsNull() )
6991 for ( _LayerEdge* le : eoe->_edges )
6992 if ( le->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > 0 )
6994 // make _neibors on FACE be smoothed after le->Is( BLOCKED )
6995 for ( _LayerEdge* neibor : le->_neibors )
6997 int shapeDim = neibor->BaseShapeDim();
6998 if ( shapeDim == 2 )
6999 neibor->Set( _LayerEdge::NEAR_BOUNDARY ); // on FACE
7000 else if ( shapeDim == 0 )
7001 neibor->Set( _LayerEdge::RISKY_SWOL ); // on VERTEX
7003 if ( !neibor->_curvature )
7005 gp_XY uv = helper.GetNodeUV( F, neibor->_nodes[0] );
7006 neibor->_curvature = _Factory::NewCurvature();
7007 neibor->_curvature->_r = 0;
7008 neibor->_curvature->_k = 0;
7009 neibor->_curvature->_h2lenRatio = 0;
7010 neibor->_curvature->_uv = uv;
7016 // Try to initialize _Mapper2D
7018 // if ( hasNoShrink )
7021 SMDS_ElemIteratorPtr fIt = eos->_subMesh->GetSubMeshDS()->GetElements();
7022 if ( !fIt->more() || fIt->next()->NbCornerNodes() != 4 )
7025 // get EDGEs of quadrangle bottom
7026 std::list< TopoDS_Edge > edges;
7027 std::list< int > nbEdgesInWire;
7028 int nbWire = SMESH_Block::GetOrderedEdges( F, edges, nbEdgesInWire );
7029 if ( nbWire != 1 || nbEdgesInWire.front() < 4 )
7031 const SMDS_MeshNode* node;
7032 while ( true ) // make edges start at a corner VERTEX
7034 node = SMESH_Algo::VertexNode( helper.IthVertex( 0, edges.front() ), helper.GetMeshDS() );
7035 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7038 if ( edges.empty() )
7041 std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
7042 while ( true ) // make edges finish at a corner VERTEX
7044 node = SMESH_Algo::VertexNode( helper.IthVertex( 1, *edgeIt ), helper.GetMeshDS() );
7046 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7048 edges.erase( edgeIt, edges.end() );
7051 if ( edgeIt == edges.end() )
7055 // get structure of nodes
7056 TParam2ColumnMap param2ColumnMap;
7057 if ( !helper.LoadNodeColumns( param2ColumnMap, F, edges, helper.GetMeshDS() ))
7060 eos->_mapper2D = new _Mapper2D( param2ColumnMap, eos->GetData()._n2eMap );
7062 } // if eos is of curved FACE
7067 //================================================================================
7069 * \brief Add faces for smoothing
7071 //================================================================================
7073 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
7074 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
7076 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
7077 for ( ; eos != eosToSmooth.end(); ++eos )
7079 if ( !*eos || (*eos)->_toSmooth ) continue;
7081 (*eos)->_toSmooth = true;
7083 if ( (*eos)->ShapeType() == TopAbs_FACE )
7085 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
7086 (*eos)->_toSmooth = true;
7090 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
7091 if ( edgesNoAnaSmooth )
7092 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
7094 if ( (*eos)->_edgeSmoother )
7095 (*eos)->_edgeSmoother->_anaCurve.Nullify();
7099 //================================================================================
7101 * \brief Limit _LayerEdge::_maxLen according to local curvature
7103 //================================================================================
7105 void _ViscousBuilder::limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& /*helper*/ )
7107 // find intersection of neighbor _LayerEdge's to limit _maxLen
7108 // according to local curvature (IPAL52648)
7110 // This method must be called after findCollisionEdges() where _LayerEdge's
7111 // get _lenFactor initialized in the case of eos._hyp.IsOffsetMethod()
7113 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7115 _EdgesOnShape& eosI = data._edgesOnShape[iS];
7116 if ( eosI._edges.empty() ) continue;
7117 if ( !eosI._hyp.ToSmooth() )
7119 for ( size_t i = 0; i < eosI._edges.size(); ++i )
7121 _LayerEdge* eI = eosI._edges[i];
7122 for ( size_t iN = 0; iN < eI->_neibors.size(); ++iN )
7124 _LayerEdge* eN = eI->_neibors[iN];
7125 if ( eI->_nodes[0]->GetID() < eN->_nodes[0]->GetID() ) // treat this pair once
7127 _EdgesOnShape* eosN = data.GetShapeEdges( eN );
7128 limitMaxLenByCurvature( eI, eN, eosI, *eosN, eosI._hyp.ToSmooth() );
7133 else if ( eosI.ShapeType() == TopAbs_EDGE )
7135 const TopoDS_Edge& E = TopoDS::Edge( eosI._shape );
7136 if ( SMESH_Algo::IsStraight( E, /*degenResult=*/true )) continue;
7138 _LayerEdge* e0 = eosI._edges[0];
7139 for ( size_t i = 1; i < eosI._edges.size(); ++i )
7141 _LayerEdge* eI = eosI._edges[i];
7142 limitMaxLenByCurvature( eI, e0, eosI, eosI, eosI._hyp.ToSmooth() );
7149 //================================================================================
7151 * \brief Limit _LayerEdge::_maxLen according to local curvature
7153 //================================================================================
7155 void _ViscousBuilder::limitMaxLenByCurvature( _LayerEdge* e1,
7157 _EdgesOnShape& /*eos1*/,
7158 _EdgesOnShape& /*eos2*/,
7159 const bool /*isSmoothable*/ )
7161 if (( e1->_nodes[0]->GetPosition()->GetDim() !=
7162 e2->_nodes[0]->GetPosition()->GetDim() ) &&
7163 ( e1->_cosin < 0.75 ))
7164 return; // angle > 90 deg at e1
7166 gp_XYZ plnNorm = e1->_normal ^ e2->_normal;
7167 double norSize = plnNorm.SquareModulus();
7168 if ( norSize < std::numeric_limits<double>::min() )
7169 return; // parallel normals
7171 // find closest points of skew _LayerEdge's
7172 SMESH_TNodeXYZ src1( e1->_nodes[0] ), src2( e2->_nodes[0] );
7173 gp_XYZ dir12 = src2 - src1;
7174 gp_XYZ perp1 = e1->_normal ^ plnNorm;
7175 gp_XYZ perp2 = e2->_normal ^ plnNorm;
7176 double dot1 = perp2 * e1->_normal;
7177 double dot2 = perp1 * e2->_normal;
7178 double u1 = ( perp2 * dir12 ) / dot1;
7179 double u2 = - ( perp1 * dir12 ) / dot2;
7180 if ( u1 > 0 && u2 > 0 )
7182 double ovl = ( u1 * e1->_normal * dir12 -
7183 u2 * e2->_normal * dir12 ) / dir12.SquareModulus();
7184 if ( ovl > theSmoothThickToElemSizeRatio )
7186 const double coef = 0.75;
7187 e1->SetMaxLen( Min( e1->_maxLen, coef * u1 / e1->_lenFactor ));
7188 e2->SetMaxLen( Min( e2->_maxLen, coef * u2 / e2->_lenFactor ));
7193 //================================================================================
7195 * \brief Fill data._collisionEdges
7197 //================================================================================
7199 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
7201 data._collisionEdges.clear();
7203 // set the full thickness of the layers to LEs
7204 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7206 _EdgesOnShape& eos = data._edgesOnShape[iS];
7207 if ( eos._edges.empty() ) continue;
7208 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7209 if ( !eos._sWOL.IsNull() ) continue; // PAL23566
7211 for ( size_t i = 0; i < eos._edges.size(); ++i )
7213 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
7214 double maxLen = eos._edges[i]->_maxLen;
7215 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
7216 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
7217 eos._edges[i]->_maxLen = maxLen;
7221 // make temporary quadrangles got by extrusion of
7222 // mesh edges along _LayerEdge._normal's
7224 vector< const SMDS_MeshElement* > tmpFaces;
7226 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7228 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7229 if ( eos.ShapeType() != TopAbs_EDGE )
7231 if ( eos._edges.empty() )
7233 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
7234 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
7235 while ( smIt->more() )
7236 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
7237 if ( eov->_edges.size() == 1 )
7238 edge[ bool( edge[0]) ] = eov->_edges[0];
7242 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
7243 tmpFaces.push_back( f );
7246 for ( size_t i = 0; i < eos._edges.size(); ++i )
7248 _LayerEdge* edge = eos._edges[i];
7249 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
7251 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
7252 if ( src2->GetPosition()->GetDim() > 0 &&
7253 src2->GetID() < edge->_nodes[0]->GetID() )
7254 continue; // avoid using same segment twice
7256 // a _LayerEdge containing tgt2
7257 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
7259 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
7260 tmpFaces.push_back( f );
7265 // Find _LayerEdge's intersecting tmpFaces.
7267 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
7269 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
7270 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
7272 double dist1, dist2, segLen, eps = 0.5;
7273 _CollisionEdges collEdges;
7274 vector< const SMDS_MeshElement* > suspectFaces;
7275 const double angle45 = Cos( 45. * M_PI / 180. );
7277 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7279 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7280 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
7282 // find sub-shapes whose VL can influence VL on eos
7283 set< TGeomID > neighborShapes;
7284 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
7285 while ( const TopoDS_Shape* face = fIt->next() )
7287 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
7288 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
7290 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
7291 while ( subIt->more() )
7292 neighborShapes.insert( subIt->next()->GetId() );
7295 if ( eos.ShapeType() == TopAbs_VERTEX )
7297 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
7298 while ( const TopoDS_Shape* edge = eIt->next() )
7299 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
7301 // find intersecting _LayerEdge's
7302 for ( size_t i = 0; i < eos._edges.size(); ++i )
7304 if ( eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL )) continue;
7305 _LayerEdge* edge = eos._edges[i];
7306 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
7309 gp_Vec eSegDir0, eSegDir1;
7310 if ( edge->IsOnEdge() )
7312 SMESH_TNodeXYZ eP( edge->_nodes[0] );
7313 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
7314 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
7316 suspectFaces.clear();
7317 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len * 2,
7318 SMDSAbs_Face, suspectFaces );
7319 collEdges._intEdges.clear();
7320 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
7322 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
7323 if ( f->_le1 == edge || f->_le2 == edge ) continue;
7324 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
7325 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
7326 if ( edge->IsOnEdge() ) {
7327 if ( edge->_2neibors->include( f->_le1 ) ||
7328 edge->_2neibors->include( f->_le2 )) continue;
7331 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
7332 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
7334 dist1 = dist2 = Precision::Infinite();
7335 if ( !edge->SegTriaInter( lastSegment, f->n(0), f->n(1), f->n(2), dist1, eps ))
7336 dist1 = Precision::Infinite();
7337 if ( !edge->SegTriaInter( lastSegment, f->n(3), f->n(2), f->n(0), dist2, eps ))
7338 dist2 = Precision::Infinite();
7339 if (( dist1 > segLen ) && ( dist2 > segLen ))
7342 if ( edge->IsOnEdge() )
7344 // skip perpendicular EDGEs
7345 gp_Vec fSegDir = SMESH_TNodeXYZ( f->n(0) ) - SMESH_TNodeXYZ( f->n(3) );
7346 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle45 ) ||
7347 isLessAngle( eSegDir1, fSegDir, angle45 ) ||
7348 isLessAngle( eSegDir0, fSegDir.Reversed(), angle45 ) ||
7349 isLessAngle( eSegDir1, fSegDir.Reversed(), angle45 ));
7354 // either limit inflation of edges or remember them for updating _normal
7355 // double dot = edge->_normal * f->GetDir();
7358 collEdges._intEdges.push_back( f->_le1 );
7359 collEdges._intEdges.push_back( f->_le2 );
7363 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
7364 // edge->SetMaxLen( Min( shortLen, edge->_maxLen ));
7368 if ( !collEdges._intEdges.empty() )
7370 collEdges._edge = edge;
7371 data._collisionEdges.push_back( collEdges );
7376 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
7379 // restore the zero thickness
7380 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7382 _EdgesOnShape& eos = data._edgesOnShape[iS];
7383 if ( eos._edges.empty() ) continue;
7384 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7386 for ( size_t i = 0; i < eos._edges.size(); ++i )
7388 eos._edges[i]->InvalidateStep( 1, eos );
7389 eos._edges[i]->_len = 0;
7394 //================================================================================
7396 * \brief Find _LayerEdge's located on boundary of a convex FACE whose normal
7397 * will be updated at each inflation step
7399 //================================================================================
7401 void _ViscousBuilder::findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
7403 SMESH_MesherHelper& helper )
7405 const TGeomID convFaceID = getMeshDS()->ShapeToIndex( convFace._face );
7406 const double preci = BRep_Tool::Tolerance( convFace._face );
7407 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( convFace._face );
7409 bool edgesToUpdateFound = false;
7411 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7412 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7414 _EdgesOnShape& eos = * id2eos->second;
7415 if ( !eos._sWOL.IsNull() ) continue;
7416 if ( !eos._hyp.ToSmooth() ) continue;
7417 for ( size_t i = 0; i < eos._edges.size(); ++i )
7419 _LayerEdge* ledge = eos._edges[ i ];
7420 if ( ledge->Is( _LayerEdge::UPD_NORMAL_CONV )) continue; // already checked
7421 if ( ledge->Is( _LayerEdge::MULTI_NORMAL )) continue; // not inflatable
7423 gp_XYZ tgtPos = ( SMESH_NodeXYZ( ledge->_nodes[0] ) +
7424 ledge->_normal * ledge->_lenFactor * ledge->_maxLen );
7426 // the normal must be updated if distance from tgtPos to surface is less than
7429 // find an initial UV for search of a projection of tgtPos to surface
7430 const SMDS_MeshNode* nodeInFace = 0;
7431 SMDS_ElemIteratorPtr fIt = ledge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7432 while ( fIt->more() && !nodeInFace )
7434 const SMDS_MeshElement* f = fIt->next();
7435 if ( convFaceID != f->getshapeId() ) continue;
7437 SMDS_ElemIteratorPtr nIt = f->nodesIterator();
7438 while ( nIt->more() && !nodeInFace )
7440 const SMDS_MeshElement* n = nIt->next();
7441 if ( n->getshapeId() == convFaceID )
7442 nodeInFace = static_cast< const SMDS_MeshNode* >( n );
7447 gp_XY uv = helper.GetNodeUV( convFace._face, nodeInFace );
7450 surface->NextValueOfUV( uv, tgtPos, preci );
7451 double dist = surface->Gap();
7452 if ( dist < 0.95 * ledge->_maxLen )
7454 ledge->Set( _LayerEdge::UPD_NORMAL_CONV );
7455 if ( !ledge->_curvature ) ledge->_curvature = _Factory::NewCurvature();
7456 ledge->_curvature->_uv.SetCoord( uv.X(), uv.Y() );
7457 edgesToUpdateFound = true;
7462 if ( !convFace._isTooCurved && edgesToUpdateFound )
7464 data._convexFaces.insert( make_pair( convFaceID, convFace )).first->second;
7468 //================================================================================
7470 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
7471 * _LayerEdge's on neighbor EDGE's
7473 //================================================================================
7475 bool _ViscousBuilder::updateNormals( _SolidData& data,
7476 SMESH_MesherHelper& helper,
7478 double /*stepSize*/)
7480 updateNormalsOfC1Vertices( data );
7482 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
7485 // map to store new _normal and _cosin for each intersected edge
7486 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
7487 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
7488 _LayerEdge zeroEdge;
7489 zeroEdge._normal.SetCoord( 0,0,0 );
7490 zeroEdge._maxLen = Precision::Infinite();
7491 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
7493 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
7495 double segLen, dist1, dist2, dist;
7496 vector< pair< _LayerEdge*, double > > intEdgesDist;
7497 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
7499 for ( int iter = 0; iter < 5; ++iter )
7501 edge2newEdge.clear();
7503 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
7505 _CollisionEdges& ce = data._collisionEdges[iE];
7506 _LayerEdge* edge1 = ce._edge;
7507 if ( !edge1 /*|| edge1->Is( _LayerEdge::BLOCKED )*/) continue;
7508 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7509 if ( !eos1 ) continue;
7511 // detect intersections
7512 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
7513 double testLen = 1.5 * edge1->_maxLen * edge1->_lenFactor;
7515 intEdgesDist.clear();
7516 double minIntDist = Precision::Infinite();
7517 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
7519 if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7520 ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) &&
7521 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
7523 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
7524 double fact = ( 1.1 + dot * dot );
7525 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
7526 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
7527 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
7528 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
7529 dist1 = dist2 = Precision::Infinite();
7530 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pLast0, pSrc1, dist1, eps ) &&
7531 !edge1->SegTriaInter( lastSeg, pSrc1, pLast1, pLast0, dist2, eps ))
7534 if ( dist > testLen || dist <= 0 )
7537 if ( dist > testLen || dist <= 0 )
7540 // choose a closest edge
7541 gp_Pnt intP( lastSeg.Location().XYZ() + lastSeg.Direction().XYZ() * ( dist + segLen ));
7542 double d1 = intP.SquareDistance( pSrc0 );
7543 double d2 = intP.SquareDistance( pSrc1 );
7544 int iClose = i + ( d2 < d1 );
7545 _LayerEdge* edge2 = ce._intEdges[iClose];
7546 edge2->Unset( _LayerEdge::MARKED );
7548 // choose a closest edge among neighbors
7549 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
7550 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
7551 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
7553 _LayerEdge * edgeJ = intEdgesDist[j].first;
7554 if ( edge2->IsNeiborOnEdge( edgeJ ))
7556 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
7557 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
7560 intEdgesDist.push_back( make_pair( edge2, dist ));
7561 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
7563 // iClose = i + !( d2 < d1 );
7564 // intEdges.push_back( ce._intEdges[iClose] );
7565 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
7567 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist, minIntDist );
7572 // compute new _normals
7573 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
7575 _LayerEdge* edge2 = intEdgesDist[i].first;
7576 double distWgt = edge1->_len / intEdgesDist[i].second;
7577 // if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7578 // edge2->Is( _LayerEdge::BLOCKED )) continue;
7579 if ( edge2->Is( _LayerEdge::MARKED )) continue;
7580 edge2->Set( _LayerEdge::MARKED );
7583 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
7585 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7586 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7587 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7588 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7589 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
7590 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7591 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7592 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
7593 newNormal.Normalize();
7597 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
7598 if ( cos1 < theMinSmoothCosin )
7600 newCos = cos2 * sgn1;
7602 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
7604 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
7608 newCos = edge1->_cosin;
7611 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
7612 e2neIt->second._normal += distWgt * newNormal;
7613 e2neIt->second._cosin = newCos;
7614 e2neIt->second.SetMaxLen( 0.7 * minIntDist / edge1->_lenFactor );
7615 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
7616 e2neIt->second._normal += dir2;
7618 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
7619 e2neIt->second._normal += distWgt * newNormal;
7620 if ( Precision::IsInfinite( zeroEdge._maxLen ))
7622 e2neIt->second._cosin = edge2->_cosin;
7623 e2neIt->second.SetMaxLen( 1.3 * minIntDist / edge1->_lenFactor );
7625 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
7626 e2neIt->second._normal += dir1;
7630 if ( edge2newEdge.empty() )
7631 break; //return true;
7633 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
7635 // Update data of edges depending on a new _normal
7638 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7640 _LayerEdge* edge = e2neIt->first;
7641 _LayerEdge& newEdge = e2neIt->second;
7642 _EdgesOnShape* eos = data.GetShapeEdges( edge );
7643 if ( edge->Is( _LayerEdge::BLOCKED ) && newEdge._maxLen > edge->_len )
7646 // Check if a new _normal is OK:
7647 newEdge._normal.Normalize();
7648 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
7650 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
7652 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7653 edge->SetMaxLen( newEdge._maxLen );
7654 edge->SetNewLength( newEdge._maxLen, *eos, helper );
7656 continue; // the new _normal is bad
7658 // the new _normal is OK
7660 // find shapes that need smoothing due to change of _normal
7661 if ( edge->_cosin < theMinSmoothCosin &&
7662 newEdge._cosin > theMinSmoothCosin )
7664 if ( eos->_sWOL.IsNull() )
7666 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7667 while ( fIt->more() )
7668 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
7670 else // edge inflates along a FACE
7672 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
7673 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE, &eos->_sWOL );
7674 while ( const TopoDS_Shape* E = eIt->next() )
7676 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ),
7677 eos->_hyp.Get1stLayerThickness() );
7678 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
7679 if ( angle < M_PI / 2 )
7680 shapesToSmooth.insert( data.GetShapeEdges( *E ));
7685 double len = edge->_len;
7686 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7687 edge->SetNormal( newEdge._normal );
7688 edge->SetCosin( newEdge._cosin );
7689 edge->SetNewLength( len, *eos, helper );
7690 edge->Set( _LayerEdge::MARKED );
7691 edge->Set( _LayerEdge::NORMAL_UPDATED );
7692 edgesNoAnaSmooth.insert( eos );
7695 // Update normals and other dependent data of not intersecting _LayerEdge's
7696 // neighboring the intersecting ones
7698 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7700 _LayerEdge* edge1 = e2neIt->first;
7701 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7702 if ( !edge1->Is( _LayerEdge::MARKED ))
7705 if ( edge1->IsOnEdge() )
7707 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
7708 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
7709 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
7712 if ( !edge1->_2neibors || !eos1->_sWOL.IsNull() )
7714 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
7716 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
7717 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
7718 continue; // j-th neighbor is also intersected
7719 _LayerEdge* prevEdge = edge1;
7720 const int nbSteps = 10;
7721 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
7723 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
7724 neighbor->Is( _LayerEdge::MARKED ))
7726 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
7727 if ( !eos ) continue;
7728 _LayerEdge* nextEdge = neighbor;
7729 if ( neighbor->_2neibors )
7732 nextEdge = neighbor->_2neibors->_edges[iNext];
7733 if ( nextEdge == prevEdge )
7734 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
7736 double r = double(step-1)/nbSteps/(iter+1);
7737 if ( !nextEdge->_2neibors )
7740 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
7741 newNorm.Normalize();
7742 if ( !isNewNormalOk( data, *neighbor, newNorm ))
7745 double len = neighbor->_len;
7746 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7747 neighbor->SetNormal( newNorm );
7748 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
7749 if ( neighbor->_2neibors )
7750 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
7751 neighbor->SetNewLength( len, *eos, helper );
7752 neighbor->Set( _LayerEdge::MARKED );
7753 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
7754 edgesNoAnaSmooth.insert( eos );
7756 if ( !neighbor->_2neibors )
7757 break; // neighbor is on VERTEX
7759 // goto the next neighbor
7760 prevEdge = neighbor;
7761 neighbor = nextEdge;
7768 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
7773 //================================================================================
7775 * \brief Check if a new normal is OK
7777 //================================================================================
7779 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
7781 const gp_XYZ& newNormal)
7783 // check a min angle between the newNormal and surrounding faces
7784 vector<_Simplex> simplices;
7785 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
7786 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
7787 double newMinDot = 1, curMinDot = 1;
7788 for ( size_t i = 0; i < simplices.size(); ++i )
7790 n1.Set( simplices[i]._nPrev );
7791 n2.Set( simplices[i]._nNext );
7792 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
7793 double normLen2 = normFace.SquareModulus();
7794 if ( normLen2 < std::numeric_limits<double>::min() )
7796 normFace /= Sqrt( normLen2 );
7797 newMinDot = Min( newNormal * normFace, newMinDot );
7798 curMinDot = Min( edge._normal * normFace, curMinDot );
7801 if ( newMinDot < 0.5 )
7803 ok = ( newMinDot >= curMinDot * 0.9 );
7804 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
7805 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
7806 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
7812 //================================================================================
7814 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
7816 //================================================================================
7818 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
7819 SMESH_MesherHelper& /*helper*/,
7821 const double stepSize )
7823 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
7824 return true; // no shapes needing smoothing
7826 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7828 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7829 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
7830 !eos._hyp.ToSmooth() ||
7831 eos.ShapeType() != TopAbs_FACE ||
7832 eos._edges.empty() )
7835 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
7836 if ( !toSmooth ) continue;
7838 for ( size_t i = 0; i < eos._edges.size(); ++i )
7840 _LayerEdge* edge = eos._edges[i];
7841 if ( !edge->Is( _LayerEdge::SMOOTHED ))
7843 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
7846 const gp_XYZ& pPrev = edge->PrevPos();
7847 const gp_XYZ& pLast = edge->_pos.back();
7848 gp_XYZ stepVec = pLast - pPrev;
7849 double realStepSize = stepVec.Modulus();
7850 if ( realStepSize < numeric_limits<double>::min() )
7853 edge->_lenFactor = realStepSize / stepSize;
7854 edge->_normal = stepVec / realStepSize;
7855 edge->Set( _LayerEdge::NORMAL_UPDATED );
7862 //================================================================================
7864 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
7866 //================================================================================
7868 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
7870 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7872 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
7873 if ( eov._eosC1.empty() ||
7874 eov.ShapeType() != TopAbs_VERTEX ||
7875 eov._edges.empty() )
7878 gp_XYZ newNorm = eov._edges[0]->_normal;
7879 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
7880 bool normChanged = false;
7882 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
7884 _EdgesOnShape* eoe = eov._eosC1[i];
7885 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
7886 const double eLen = SMESH_Algo::EdgeLength( e );
7887 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
7888 if ( oppV.IsSame( eov._shape ))
7889 oppV = SMESH_MesherHelper::IthVertex( 1, e );
7890 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
7891 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
7892 if ( eov._edges[0]->Is( _LayerEdge::BLOCKED )) continue;
7894 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
7895 if ( curThickOpp + curThick < eLen )
7898 double wgt = 2. * curThick / eLen;
7899 newNorm += wgt * eovOpp->_edges[0]->_normal;
7904 eov._edges[0]->SetNormal( newNorm.Normalized() );
7905 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
7910 //================================================================================
7912 * \brief Modify normals of _LayerEdge's on _ConvexFace's
7914 //================================================================================
7916 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
7917 SMESH_MesherHelper& helper,
7920 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
7923 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
7924 for ( ; id2face != data._convexFaces.end(); ++id2face )
7926 _ConvexFace & convFace = (*id2face).second;
7927 convFace._normalsFixedOnBorders = false; // to update at each inflation step
7929 if ( convFace._normalsFixed )
7930 continue; // already fixed
7931 if ( convFace.CheckPrisms() )
7932 continue; // nothing to fix
7934 convFace._normalsFixed = true;
7936 BRepAdaptor_Surface surface ( convFace._face, false );
7937 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
7939 // check if the convex FACE is of spherical shape
7941 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
7945 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7946 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7948 _EdgesOnShape& eos = *(id2eos->second);
7949 if ( eos.ShapeType() == TopAbs_VERTEX )
7951 _LayerEdge* ledge = eos._edges[ 0 ];
7952 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7953 centersBox.Add( center );
7955 for ( size_t i = 0; i < eos._edges.size(); ++i )
7956 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
7958 if ( centersBox.IsVoid() )
7960 debugMsg( "Error: centersBox.IsVoid()" );
7963 const bool isSpherical =
7964 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7966 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
7967 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
7971 // set _LayerEdge::_normal as average of all normals
7973 // WARNING: different density of nodes on EDGEs is not taken into account that
7974 // can lead to an improper new normal
7976 gp_XYZ avgNormal( 0,0,0 );
7978 id2eos = convFace._subIdToEOS.begin();
7979 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7981 _EdgesOnShape& eos = *(id2eos->second);
7982 // set data of _CentralCurveOnEdge
7983 if ( eos.ShapeType() == TopAbs_EDGE )
7985 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
7986 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
7987 if ( !eos._sWOL.IsNull() )
7988 ceCurve._adjFace.Nullify();
7990 ceCurve._ledges.insert( ceCurve._ledges.end(),
7991 eos._edges.begin(), eos._edges.end());
7993 // summarize normals
7994 for ( size_t i = 0; i < eos._edges.size(); ++i )
7995 avgNormal += eos._edges[ i ]->_normal;
7997 double normSize = avgNormal.SquareModulus();
7998 if ( normSize < 1e-200 )
8000 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
8003 avgNormal /= Sqrt( normSize );
8005 // compute new _LayerEdge::_cosin on EDGEs
8006 double avgCosin = 0;
8009 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8011 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
8012 if ( ceCurve._adjFace.IsNull() )
8014 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
8016 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
8017 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8020 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
8021 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
8022 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
8028 avgCosin /= nbCosin;
8030 // set _LayerEdge::_normal = avgNormal
8031 id2eos = convFace._subIdToEOS.begin();
8032 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8034 _EdgesOnShape& eos = *(id2eos->second);
8035 if ( eos.ShapeType() != TopAbs_EDGE )
8036 for ( size_t i = 0; i < eos._edges.size(); ++i )
8037 eos._edges[ i ]->_cosin = avgCosin;
8039 for ( size_t i = 0; i < eos._edges.size(); ++i )
8041 eos._edges[ i ]->SetNormal( avgNormal );
8042 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
8046 else // if ( isSpherical )
8048 // We suppose that centers of curvature at all points of the FACE
8049 // lie on some curve, let's call it "central curve". For all _LayerEdge's
8050 // having a common center of curvature we define the same new normal
8051 // as a sum of normals of _LayerEdge's on EDGEs among them.
8053 // get all centers of curvature for each EDGE
8055 helper.SetSubShape( convFace._face );
8056 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
8058 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
8059 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
8061 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
8063 // set adjacent FACE
8064 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
8066 // get _LayerEdge's of the EDGE
8067 TGeomID edgeID = meshDS->ShapeToIndex( edge );
8068 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
8069 if ( !eos || eos->_edges.empty() )
8071 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
8072 for ( int iV = 0; iV < 2; ++iV )
8074 TopoDS_Vertex v = helper.IthVertex( iV, edge );
8075 TGeomID vID = meshDS->ShapeToIndex( v );
8076 eos = data.GetShapeEdges( vID );
8077 vertexLEdges[ iV ] = eos->_edges[ 0 ];
8079 edgeLEdge = &vertexLEdges[0];
8080 edgeLEdgeEnd = edgeLEdge + 2;
8082 centerCurves[ iE ]._adjFace.Nullify();
8086 if ( ! eos->_toSmooth )
8087 data.SortOnEdge( edge, eos->_edges );
8088 edgeLEdge = &eos->_edges[ 0 ];
8089 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
8090 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
8091 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
8093 if ( ! eos->_sWOL.IsNull() )
8094 centerCurves[ iE ]._adjFace.Nullify();
8097 // Get curvature centers
8101 if ( edgeLEdge[0]->IsOnEdge() &&
8102 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
8104 centerCurves[ iE ].Append( center, vertexLEdges[0] );
8105 centersBox.Add( center );
8107 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
8108 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
8109 { // EDGE or VERTEXes
8110 centerCurves[ iE ].Append( center, *edgeLEdge );
8111 centersBox.Add( center );
8113 if ( edgeLEdge[-1]->IsOnEdge() &&
8114 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
8116 centerCurves[ iE ].Append( center, vertexLEdges[1] );
8117 centersBox.Add( center );
8119 centerCurves[ iE ]._isDegenerated =
8120 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
8122 } // loop on EDGES of convFace._face to set up data of centerCurves
8124 // Compute new normals for _LayerEdge's on EDGEs
8126 double avgCosin = 0;
8129 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
8131 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
8132 if ( ceCurve._isDegenerated )
8134 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
8135 vector< gp_XYZ > & newNormals = ceCurve._normals;
8136 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
8139 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
8142 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
8144 if ( isOK && !ceCurve._adjFace.IsNull() )
8146 // compute new _LayerEdge::_cosin
8147 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
8148 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8151 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
8152 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
8153 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
8159 // set new normals to _LayerEdge's of NOT degenerated central curves
8160 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8162 if ( centerCurves[ iE ]._isDegenerated )
8164 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8166 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
8167 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8170 // set new normals to _LayerEdge's of degenerated central curves
8171 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8173 if ( !centerCurves[ iE ]._isDegenerated ||
8174 centerCurves[ iE ]._ledges.size() < 3 )
8176 // new normal is an average of new normals at VERTEXes that
8177 // was computed on non-degenerated _CentralCurveOnEdge's
8178 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
8179 centerCurves[ iE ]._ledges.back ()->_normal );
8180 double sz = newNorm.Modulus();
8184 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
8185 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
8186 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
8188 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
8189 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
8190 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8194 // Find new normals for _LayerEdge's based on FACE
8197 avgCosin /= nbCosin;
8198 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
8199 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
8200 if ( id2eos != convFace._subIdToEOS.end() )
8204 _EdgesOnShape& eos = * ( id2eos->second );
8205 for ( size_t i = 0; i < eos._edges.size(); ++i )
8207 _LayerEdge* ledge = eos._edges[ i ];
8208 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
8210 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
8212 iE = iE % centerCurves.size();
8213 if ( centerCurves[ iE ]._isDegenerated )
8215 newNorm.SetCoord( 0,0,0 );
8216 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
8218 ledge->SetNormal( newNorm );
8219 ledge->_cosin = avgCosin;
8220 ledge->Set( _LayerEdge::NORMAL_UPDATED );
8227 } // not a quasi-spherical FACE
8229 // Update _LayerEdge's data according to a new normal
8231 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
8232 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
8234 id2eos = convFace._subIdToEOS.begin();
8235 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8237 _EdgesOnShape& eos = * ( id2eos->second );
8238 for ( size_t i = 0; i < eos._edges.size(); ++i )
8240 _LayerEdge* & ledge = eos._edges[ i ];
8241 double len = ledge->_len;
8242 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
8243 ledge->SetCosin( ledge->_cosin );
8244 ledge->SetNewLength( len, eos, helper );
8246 if ( eos.ShapeType() != TopAbs_FACE )
8247 for ( size_t i = 0; i < eos._edges.size(); ++i )
8249 _LayerEdge* ledge = eos._edges[ i ];
8250 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
8252 _LayerEdge* neibor = ledge->_neibors[iN];
8253 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
8255 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
8256 neibor->Set( _LayerEdge::MOVED );
8257 neibor->SetSmooLen( neibor->_len );
8261 } // loop on sub-shapes of convFace._face
8263 // Find FACEs adjacent to convFace._face that got necessity to smooth
8264 // as a result of normals modification
8266 set< _EdgesOnShape* > adjFacesToSmooth;
8267 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8269 if ( centerCurves[ iE ]._adjFace.IsNull() ||
8270 centerCurves[ iE ]._adjFaceToSmooth )
8272 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8274 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
8276 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
8281 data.AddShapesToSmooth( adjFacesToSmooth );
8286 } // loop on data._convexFaces
8291 //================================================================================
8293 * \brief Return max curvature of a FACE
8295 //================================================================================
8297 double _ConvexFace::GetMaxCurvature( _SolidData& data,
8299 BRepLProp_SLProps& surfProp,
8300 SMESH_MesherHelper& helper)
8302 double maxCurvature = 0;
8304 TopoDS_Face F = TopoDS::Face( eof._shape );
8306 const int nbTestPnt = 5;
8307 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8308 SMESH_subMeshIteratorPtr smIt = eof._subMesh->getDependsOnIterator(/*includeSelf=*/true);
8309 while ( smIt->more() )
8311 SMESH_subMesh* sm = smIt->next();
8312 const TGeomID subID = sm->GetId();
8314 // find _LayerEdge's of a sub-shape
8316 if (( eos = data.GetShapeEdges( subID )))
8317 this->_subIdToEOS.insert( make_pair( subID, eos ));
8321 // check concavity and curvature and limit data._stepSize
8322 const double minCurvature =
8323 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
8324 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
8325 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
8327 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
8328 surfProp.SetParameters( uv.X(), uv.Y() );
8329 if ( surfProp.IsCurvatureDefined() )
8331 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
8332 surfProp.MinCurvature() * oriFactor );
8333 maxCurvature = Max( maxCurvature, curvature );
8335 if ( curvature > minCurvature )
8336 this->_isTooCurved = true;
8339 } // loop on sub-shapes of the FACE
8341 return maxCurvature;
8344 //================================================================================
8346 * \brief Finds a center of curvature of a surface at a _LayerEdge
8348 //================================================================================
8350 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
8351 BRepLProp_SLProps& surfProp,
8352 SMESH_MesherHelper& helper,
8353 gp_Pnt & center ) const
8355 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
8356 surfProp.SetParameters( uv.X(), uv.Y() );
8357 if ( !surfProp.IsCurvatureDefined() )
8360 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8361 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
8362 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
8363 if ( surfCurvatureMin > surfCurvatureMax )
8364 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
8366 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
8371 //================================================================================
8373 * \brief Check that prisms are not distorted
8375 //================================================================================
8377 bool _ConvexFace::CheckPrisms() const
8380 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
8382 const _LayerEdge* edge = _simplexTestEdges[i];
8383 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
8384 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
8385 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
8387 debugMsg( "Bad simplex of _simplexTestEdges ("
8388 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
8389 << " "<< edge->_simplices[j]._nPrev->GetID()
8390 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
8397 //================================================================================
8399 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
8400 * stored in this _CentralCurveOnEdge.
8401 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
8402 * \param [in,out] newNormal - current normal at this point, to be redefined
8403 * \return bool - true if succeeded.
8405 //================================================================================
8407 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
8409 if ( this->_isDegenerated )
8412 // find two centers the given one lies between
8414 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
8416 double sl2 = 1.001 * _segLength2[ i ];
8418 double d1 = center.SquareDistance( _curvaCenters[ i ]);
8422 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
8423 if ( d2 > sl2 || d2 + d1 < 1e-100 )
8428 double r = d1 / ( d1 + d2 );
8429 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
8430 ( r ) * _ledges[ i+1 ]->_normal );
8434 double sz = newNormal.Modulus();
8443 //================================================================================
8445 * \brief Set shape members
8447 //================================================================================
8449 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
8450 const _ConvexFace& convFace,
8452 SMESH_MesherHelper& helper)
8456 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
8457 while ( const TopoDS_Shape* F = fIt->next())
8458 if ( !convFace._face.IsSame( *F ))
8460 _adjFace = TopoDS::Face( *F );
8461 _adjFaceToSmooth = false;
8462 // _adjFace already in a smoothing queue ?
8463 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
8464 _adjFaceToSmooth = eos->_toSmooth;
8469 //================================================================================
8471 * \brief Looks for intersection of it's last segment with faces
8472 * \param distance - returns shortest distance from the last node to intersection
8474 //================================================================================
8476 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
8478 const double& epsilon,
8480 const SMDS_MeshElement** intFace)
8482 vector< const SMDS_MeshElement* > suspectFaces;
8484 gp_Ax1 lastSegment = LastSegment( segLen, eos );
8485 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
8487 bool segmentIntersected = false;
8488 distance = Precision::Infinite();
8489 int iFace = -1; // intersected face
8490 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
8492 const SMDS_MeshElement* face = suspectFaces[j];
8493 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
8494 face->GetNodeIndex( _nodes[0] ) >= 0 )
8495 continue; // face sharing _LayerEdge node
8496 const int nbNodes = face->NbCornerNodes();
8497 bool intFound = false;
8499 SMDS_MeshElement::iterator nIt = face->begin_nodes();
8502 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
8506 const SMDS_MeshNode* tria[3];
8509 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
8512 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
8518 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
8519 segmentIntersected = true;
8520 if ( distance > dist )
8521 distance = dist, iFace = j;
8524 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
8528 if ( segmentIntersected )
8531 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
8532 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
8533 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
8534 << ", intersection with face ("
8535 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
8536 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
8537 << ") distance = " << distance << endl;
8541 return segmentIntersected;
8544 //================================================================================
8546 * \brief Returns a point used to check orientation of _simplices
8548 //================================================================================
8550 gp_XYZ _LayerEdge::PrevCheckPos( _EdgesOnShape* eos ) const
8552 size_t i = Is( NORMAL_UPDATED ) && IsOnFace() ? _pos.size()-2 : 0;
8554 if ( !eos || eos->_sWOL.IsNull() )
8557 if ( eos->SWOLType() == TopAbs_EDGE )
8559 return BRepAdaptor_Curve( TopoDS::Edge( eos->_sWOL )).Value( _pos[i].X() ).XYZ();
8561 //else // TopAbs_FACE
8563 return BRepAdaptor_Surface( TopoDS::Face( eos->_sWOL )).Value(_pos[i].X(), _pos[i].Y() ).XYZ();
8566 //================================================================================
8568 * \brief Returns size and direction of the last segment
8570 //================================================================================
8572 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
8574 // find two non-coincident positions
8575 gp_XYZ orig = _pos.back();
8577 int iPrev = _pos.size() - 2;
8578 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
8579 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
8580 while ( iPrev >= 0 )
8582 vec = orig - _pos[iPrev];
8583 if ( vec.SquareModulus() > tol*tol )
8593 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
8594 segDir.SetDirection( _normal );
8599 gp_Pnt pPrev = _pos[ iPrev ];
8600 if ( !eos._sWOL.IsNull() )
8602 TopLoc_Location loc;
8603 if ( eos.SWOLType() == TopAbs_EDGE )
8606 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8607 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
8611 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
8612 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
8614 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
8616 segDir.SetLocation( pPrev );
8617 segDir.SetDirection( vec );
8618 segLen = vec.Modulus();
8624 //================================================================================
8626 * \brief Return the last (or \a which) position of the target node on a FACE.
8627 * \param [in] F - the FACE this _LayerEdge is inflated along
8628 * \param [in] which - index of position
8629 * \return gp_XY - result UV
8631 //================================================================================
8633 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which ) const
8635 if ( F.IsSame( eos._sWOL )) // F is my FACE
8636 return gp_XY( _pos.back().X(), _pos.back().Y() );
8638 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
8639 return gp_XY( 1e100, 1e100 );
8641 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
8642 double f, l, u = _pos[ which < 0 ? _pos.size()-1 : which ].X();
8643 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
8644 if ( !C2d.IsNull() && f <= u && u <= l )
8645 return C2d->Value( u ).XY();
8647 return gp_XY( 1e100, 1e100 );
8650 //================================================================================
8652 * \brief Test intersection of the last segment with a given triangle
8653 * using Moller-Trumbore algorithm
8654 * Intersection is detected if distance to intersection is less than _LayerEdge._len
8656 //================================================================================
8658 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
8659 const gp_XYZ& vert0,
8660 const gp_XYZ& vert1,
8661 const gp_XYZ& vert2,
8663 const double& EPSILON) const
8665 const gp_Pnt& orig = lastSegment.Location();
8666 const gp_Dir& dir = lastSegment.Direction();
8668 /* calculate distance from vert0 to ray origin */
8669 //gp_XYZ tvec = orig.XYZ() - vert0;
8671 //if ( tvec * dir > EPSILON )
8672 // intersected face is at back side of the temporary face this _LayerEdge belongs to
8675 gp_XYZ edge1 = vert1 - vert0;
8676 gp_XYZ edge2 = vert2 - vert0;
8678 /* begin calculating determinant - also used to calculate U parameter */
8679 gp_XYZ pvec = dir.XYZ() ^ edge2;
8681 /* if determinant is near zero, ray lies in plane of triangle */
8682 double det = edge1 * pvec;
8684 const double ANGL_EPSILON = 1e-12;
8685 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
8688 /* calculate distance from vert0 to ray origin */
8689 gp_XYZ tvec = orig.XYZ() - vert0;
8691 /* calculate U parameter and test bounds */
8692 double u = ( tvec * pvec ) / det;
8693 //if (u < 0.0 || u > 1.0)
8694 if ( u < -EPSILON || u > 1.0 + EPSILON )
8697 /* prepare to test V parameter */
8698 gp_XYZ qvec = tvec ^ edge1;
8700 /* calculate V parameter and test bounds */
8701 double v = (dir.XYZ() * qvec) / det;
8702 //if ( v < 0.0 || u + v > 1.0 )
8703 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
8706 /* calculate t, ray intersects triangle */
8707 t = (edge2 * qvec) / det;
8713 //================================================================================
8715 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
8716 * neighbor _LayerEdge's by it's own inflation vector.
8717 * \param [in] eov - EOS of the VERTEX
8718 * \param [in] eos - EOS of the FACE
8719 * \param [in] step - inflation step
8720 * \param [in,out] badSmooEdges - tangled _LayerEdge's
8722 //================================================================================
8724 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
8725 const _EdgesOnShape* eos,
8727 vector< _LayerEdge* > & badSmooEdges )
8729 // check if any of _neibors is in badSmooEdges
8730 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
8731 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
8734 // get all edges to move
8736 set< _LayerEdge* > edges;
8738 // find a distance between _LayerEdge on VERTEX and its neighbors
8739 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
8741 for ( size_t i = 0; i < _neibors.size(); ++i )
8743 _LayerEdge* nEdge = _neibors[i];
8744 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
8746 edges.insert( nEdge );
8747 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
8750 // add _LayerEdge's close to curPosV
8754 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8756 _LayerEdge* edgeF = *e;
8757 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
8759 _LayerEdge* nEdge = edgeF->_neibors[i];
8760 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
8761 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
8762 edges.insert( nEdge );
8766 while ( nbE < edges.size() );
8768 // move the target node of the got edges
8770 gp_XYZ prevPosV = PrevPos();
8771 if ( eov->SWOLType() == TopAbs_EDGE )
8773 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
8774 prevPosV = curve.Value( prevPosV.X() ).XYZ();
8776 else if ( eov->SWOLType() == TopAbs_FACE )
8778 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
8779 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
8782 SMDS_FacePositionPtr fPos;
8783 //double r = 1. - Min( 0.9, step / 10. );
8784 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8786 _LayerEdge* edgeF = *e;
8787 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
8788 const gp_XYZ newPosF = curPosV + prevVF;
8789 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8790 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
8791 edgeF->_pos.back() = newPosF;
8792 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
8794 // set _curvature to make edgeF updated by putOnOffsetSurface()
8795 if ( !edgeF->_curvature )
8796 if (( fPos = edgeF->_nodes[0]->GetPosition() ))
8798 edgeF->_curvature = _Factory::NewCurvature();
8799 edgeF->_curvature->_r = 0;
8800 edgeF->_curvature->_k = 0;
8801 edgeF->_curvature->_h2lenRatio = 0;
8802 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
8805 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
8806 // SMESH_TNodeXYZ( _nodes[0] ));
8807 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8809 // _LayerEdge* edgeF = *e;
8810 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8811 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8812 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8813 // edgeF->_pos.back() = newPosF;
8814 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
8817 // smooth _LayerEdge's around moved nodes
8818 //size_t nbBadBefore = badSmooEdges.size();
8819 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8821 _LayerEdge* edgeF = *e;
8822 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
8823 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
8824 //&& !edges.count( edgeF->_neibors[j] ))
8826 _LayerEdge* edgeFN = edgeF->_neibors[j];
8827 edgeFN->Unset( SMOOTHED );
8828 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
8831 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
8832 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
8833 // int nbBadAfter = edgeFN->_simplices.size();
8835 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
8837 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
8839 // if ( nbBadAfter <= nbBad )
8841 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
8842 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8843 // edgeF->_pos.back() = newPosF;
8844 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8845 // nbBad = nbBadAfter;
8849 badSmooEdges.push_back( edgeFN );
8852 // move a bit not smoothed around moved nodes
8853 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
8855 // _LayerEdge* edgeF = badSmooEdges[i];
8856 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8857 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8858 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
8859 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
8860 // edgeF->_pos.back() = newPosF;
8861 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8865 //================================================================================
8867 * \brief Perform smooth of _LayerEdge's based on EDGE's
8868 * \retval bool - true if node has been moved
8870 //================================================================================
8872 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
8873 const TopoDS_Face& F,
8874 SMESH_MesherHelper& helper)
8876 ASSERT( IsOnEdge() );
8878 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
8879 SMESH_TNodeXYZ oldPos( tgtNode );
8880 double dist01, distNewOld;
8882 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
8883 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
8884 dist01 = p0.Distance( _2neibors->tgtNode(1) );
8886 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
8887 double lenDelta = 0;
8890 //lenDelta = _curvature->lenDelta( _len );
8891 lenDelta = _curvature->lenDeltaByDist( dist01 );
8892 newPos.ChangeCoord() += _normal * lenDelta;
8895 distNewOld = newPos.Distance( oldPos );
8899 if ( _2neibors->_plnNorm )
8901 // put newPos on the plane defined by source node and _plnNorm
8902 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
8903 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
8904 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
8906 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8907 _pos.back() = newPos.XYZ();
8911 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8912 gp_XY uv( Precision::Infinite(), 0 );
8913 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
8914 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8916 newPos = surface->Value( uv );
8917 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8920 // commented for IPAL0052478
8921 // if ( _curvature && lenDelta < 0 )
8923 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
8924 // _len -= prevPos.Distance( oldPos );
8925 // _len += prevPos.Distance( newPos );
8927 bool moved = distNewOld > dist01/50;
8929 dumpMove( tgtNode ); // debug
8934 //================================================================================
8936 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
8938 //================================================================================
8940 void _LayerEdge::SmoothWoCheck()
8942 if ( Is( DIFFICULT ))
8945 bool moved = Is( SMOOTHED );
8946 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
8947 moved = _neibors[i]->Is( SMOOTHED );
8951 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8953 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8954 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8955 _pos.back() = newPos;
8957 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
8960 //================================================================================
8962 * \brief Checks validity of _neibors on EDGEs and VERTEXes
8964 //================================================================================
8966 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
8968 if ( ! Is( NEAR_BOUNDARY ))
8973 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
8975 _LayerEdge* eN = _neibors[iN];
8976 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
8979 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) ||
8980 eN->Is( _LayerEdge::NORMAL_UPDATED ) ||
8981 eN->_pos.size() != _pos.size() );
8983 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
8984 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
8985 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
8986 if ( eN->_nodes.size() > 1 &&
8987 eN->_simplices[i].Includes( _nodes.back() ) &&
8988 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
8993 badNeibors->push_back( eN );
8994 debugMsg("Bad boundary simplex ( "
8995 << " "<< eN->_nodes[0]->GetID()
8996 << " "<< eN->_nodes.back()->GetID()
8997 << " "<< eN->_simplices[i]._nPrev->GetID()
8998 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
9009 //================================================================================
9011 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9012 * \retval int - nb of bad simplices around this _LayerEdge
9014 //================================================================================
9016 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
9018 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
9019 return 0; // shape of simplices not changed
9020 if ( _simplices.size() < 2 )
9021 return 0; // _LayerEdge inflated along EDGE or FACE
9023 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
9026 const gp_XYZ& curPos = _pos.back();
9027 const gp_XYZ& prevPos = _pos[0]; //PrevPos();
9029 // quality metrics (orientation) of tetras around _tgtNode
9031 double vol, minVolBefore = 1e100;
9032 for ( size_t i = 0; i < _simplices.size(); ++i )
9034 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9035 minVolBefore = Min( minVolBefore, vol );
9037 int nbBad = _simplices.size() - nbOkBefore;
9039 bool bndNeedSmooth = false;
9041 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
9045 // evaluate min angle
9046 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
9048 size_t nbGoodAngles = _simplices.size();
9050 for ( size_t i = 0; i < _simplices.size(); ++i )
9052 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
9055 if ( nbGoodAngles == _simplices.size() )
9061 if ( Is( ON_CONCAVE_FACE ))
9064 if ( step % 2 == 0 )
9067 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9069 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
9070 _smooFunction = _funs[ FUN_CENTROIDAL ];
9072 _smooFunction = _funs[ FUN_LAPLACIAN ];
9075 // compute new position for the last _pos using different _funs
9078 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9081 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9082 else if ( _funs[ iFun ] == _smooFunction )
9083 continue; // _smooFunction again
9084 else if ( step > 1 )
9085 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9087 break; // let "easy" functions improve elements around distorted ones
9091 double delta = _curvature->lenDelta( _len );
9093 newPos += _normal * delta;
9096 double segLen = _normal * ( newPos - prevPos );
9097 if ( segLen + delta > 0 )
9098 newPos += _normal * delta;
9100 // double segLenChange = _normal * ( curPos - newPos );
9101 // newPos += 0.5 * _normal * segLenChange;
9105 double minVolAfter = 1e100;
9106 for ( size_t i = 0; i < _simplices.size(); ++i )
9108 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9109 minVolAfter = Min( minVolAfter, vol );
9112 if ( nbOkAfter < nbOkBefore )
9116 ( nbOkAfter == nbOkBefore ) &&
9117 ( minVolAfter <= minVolBefore ))
9120 nbBad = _simplices.size() - nbOkAfter;
9121 minVolBefore = minVolAfter;
9122 nbOkBefore = nbOkAfter;
9125 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9126 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9127 _pos.back() = newPos;
9129 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9130 << (nbBad ? " --BAD" : ""));
9134 continue; // look for a better function
9140 } // loop on smoothing functions
9142 if ( moved ) // notify _neibors
9145 for ( size_t i = 0; i < _neibors.size(); ++i )
9146 if ( !_neibors[i]->Is( MOVED ))
9148 _neibors[i]->Set( MOVED );
9149 toSmooth.push_back( _neibors[i] );
9156 //================================================================================
9158 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9159 * \retval int - nb of bad simplices around this _LayerEdge
9161 //================================================================================
9163 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
9165 if ( !_smooFunction )
9166 return 0; // _LayerEdge inflated along EDGE or FACE
9168 return 0; // not inflated
9170 const gp_XYZ& curPos = _pos.back();
9171 const gp_XYZ& prevPos = _pos[0]; //PrevCheckPos();
9173 // quality metrics (orientation) of tetras around _tgtNode
9175 double vol, minVolBefore = 1e100;
9176 for ( size_t i = 0; i < _simplices.size(); ++i )
9178 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9179 minVolBefore = Min( minVolBefore, vol );
9181 int nbBad = _simplices.size() - nbOkBefore;
9183 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9185 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
9186 _smooFunction = _funs[ FUN_LAPLACIAN ];
9187 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
9188 _smooFunction = _funs[ FUN_CENTROIDAL ];
9191 // compute new position for the last _pos using different _funs
9193 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9196 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9197 else if ( _funs[ iFun ] == _smooFunction )
9198 continue; // _smooFunction again
9199 else if ( step > 1 )
9200 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9202 break; // let "easy" functions improve elements around distorted ones
9206 double delta = _curvature->lenDelta( _len );
9208 newPos += _normal * delta;
9211 double segLen = _normal * ( newPos - prevPos );
9212 if ( segLen + delta > 0 )
9213 newPos += _normal * delta;
9215 // double segLenChange = _normal * ( curPos - newPos );
9216 // newPos += 0.5 * _normal * segLenChange;
9220 double minVolAfter = 1e100;
9221 for ( size_t i = 0; i < _simplices.size(); ++i )
9223 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9224 minVolAfter = Min( minVolAfter, vol );
9227 if ( nbOkAfter < nbOkBefore )
9229 if (( isConcaveFace || findBest ) &&
9230 ( nbOkAfter == nbOkBefore ) &&
9231 ( minVolAfter <= minVolBefore )
9235 nbBad = _simplices.size() - nbOkAfter;
9236 minVolBefore = minVolAfter;
9237 nbOkBefore = nbOkAfter;
9239 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9240 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9241 _pos.back() = newPos;
9243 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9244 << ( nbBad ? "--BAD" : ""));
9246 // commented for IPAL0052478
9247 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
9248 // _len += prevPos.Distance(newPos);
9250 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
9252 //_smooFunction = _funs[ iFun ];
9253 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
9254 // << "\t nbBad: " << _simplices.size() - nbOkAfter
9255 // << " minVol: " << minVolAfter
9256 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
9258 continue; // look for a better function
9264 } // loop on smoothing functions
9269 //================================================================================
9271 * \brief Chooses a smoothing technique giving a position most close to an initial one.
9272 * For a correct result, _simplices must contain nodes lying on geometry.
9274 //================================================================================
9276 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
9277 const TNode2Edge& /*n2eMap*/)
9279 if ( _smooFunction ) return;
9281 // use smoothNefPolygon() near concaveVertices
9282 if ( !concaveVertices.empty() )
9284 _smooFunction = _funs[ FUN_CENTROIDAL ];
9286 Set( ON_CONCAVE_FACE );
9288 for ( size_t i = 0; i < _simplices.size(); ++i )
9290 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
9292 _smooFunction = _funs[ FUN_NEFPOLY ];
9294 // set FUN_CENTROIDAL to neighbor edges
9295 for ( i = 0; i < _neibors.size(); ++i )
9297 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
9299 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
9306 // // this choice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
9307 // // where the nodes are smoothed too far along a sphere thus creating
9308 // // inverted _simplices
9309 // double dist[theNbSmooFuns];
9310 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
9311 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
9313 // double minDist = Precision::Infinite();
9314 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
9315 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
9317 // gp_Pnt newP = (this->*_funs[i])();
9318 // dist[i] = p.SquareDistance( newP );
9319 // if ( dist[i]*coef[i] < minDist )
9321 // _smooFunction = _funs[i];
9322 // minDist = dist[i]*coef[i];
9328 _smooFunction = _funs[ FUN_LAPLACIAN ];
9331 // for ( size_t i = 0; i < _simplices.size(); ++i )
9332 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
9333 // if ( minDim == 0 )
9334 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9335 // else if ( minDim == 1 )
9336 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9340 // for ( int i = 0; i < FUN_NB; ++i )
9342 // //cout << dist[i] << " ";
9343 // if ( _smooFunction == _funs[i] ) {
9345 // //debugMsg( fNames[i] );
9349 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
9352 //================================================================================
9354 * \brief Returns a name of _SmooFunction
9356 //================================================================================
9358 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
9361 fun = _smooFunction;
9362 for ( int i = 0; i < theNbSmooFuns; ++i )
9363 if ( fun == _funs[i] )
9366 return theNbSmooFuns;
9369 //================================================================================
9371 * \brief Computes a new node position using Laplacian smoothing
9373 //================================================================================
9375 gp_XYZ _LayerEdge::smoothLaplacian()
9377 gp_XYZ newPos (0,0,0);
9378 for ( size_t i = 0; i < _simplices.size(); ++i )
9379 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9380 newPos /= _simplices.size();
9385 //================================================================================
9387 * \brief Computes a new node position using angular-based smoothing
9389 //================================================================================
9391 gp_XYZ _LayerEdge::smoothAngular()
9393 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
9394 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
9395 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
9397 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9399 for ( size_t i = 0; i < _simplices.size(); ++i )
9401 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9402 edgeDir.push_back( p - pPrev );
9403 edgeSize.push_back( edgeDir.back().Magnitude() );
9404 if ( edgeSize.back() < numeric_limits<double>::min() )
9407 edgeSize.pop_back();
9411 edgeDir.back() /= edgeSize.back();
9412 points.push_back( p );
9417 edgeDir.push_back ( edgeDir[0] );
9418 edgeSize.push_back( edgeSize[0] );
9419 pN /= points.size();
9421 gp_XYZ newPos(0,0,0);
9423 for ( size_t i = 0; i < points.size(); ++i )
9425 gp_Vec toN = pN - points[i];
9426 double toNLen = toN.Magnitude();
9427 if ( toNLen < numeric_limits<double>::min() )
9432 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
9433 double bisecLen = bisec.SquareMagnitude();
9434 if ( bisecLen < numeric_limits<double>::min() )
9436 gp_Vec norm = edgeDir[i] ^ toN;
9437 bisec = norm ^ edgeDir[i];
9438 bisecLen = bisec.SquareMagnitude();
9440 bisecLen = Sqrt( bisecLen );
9444 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
9445 sumSize += bisecLen;
9447 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
9448 sumSize += ( edgeSize[i] + edgeSize[i+1] );
9454 // project newPos to an average plane
9456 gp_XYZ norm(0,0,0); // plane normal
9457 points.push_back( points[0] );
9458 for ( size_t i = 1; i < points.size(); ++i )
9460 gp_XYZ vec1 = points[ i-1 ] - pN;
9461 gp_XYZ vec2 = points[ i ] - pN;
9462 gp_XYZ cross = vec1 ^ vec2;
9465 if ( cross * norm < numeric_limits<double>::min() )
9466 norm += cross.Reversed();
9470 catch (Standard_Failure&) { // if |cross| == 0.
9473 gp_XYZ vec = newPos - pN;
9474 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
9475 newPos = newPos - r * norm;
9480 //================================================================================
9482 * \brief Computes a new node position using weighted node positions
9484 //================================================================================
9486 gp_XYZ _LayerEdge::smoothLengthWeighted()
9488 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
9489 vector< gp_XYZ > points; points. reserve( _simplices.size() );
9491 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9492 for ( size_t i = 0; i < _simplices.size(); ++i )
9494 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9495 edgeSize.push_back( ( p - pPrev ).Modulus() );
9496 if ( edgeSize.back() < numeric_limits<double>::min() )
9498 edgeSize.pop_back();
9502 points.push_back( p );
9506 edgeSize.push_back( edgeSize[0] );
9508 gp_XYZ newPos(0,0,0);
9510 for ( size_t i = 0; i < points.size(); ++i )
9512 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
9513 sumSize += edgeSize[i] + edgeSize[i+1];
9519 //================================================================================
9521 * \brief Computes a new node position using angular-based smoothing
9523 //================================================================================
9525 gp_XYZ _LayerEdge::smoothCentroidal()
9527 gp_XYZ newPos(0,0,0);
9528 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
9530 for ( size_t i = 0; i < _simplices.size(); ++i )
9532 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9533 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
9534 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
9535 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
9538 newPos += gc * size;
9545 //================================================================================
9547 * \brief Computes a new node position located inside a Nef polygon
9549 //================================================================================
9551 gp_XYZ _LayerEdge::smoothNefPolygon()
9552 #ifdef OLD_NEF_POLYGON
9554 gp_XYZ newPos(0,0,0);
9556 // get a plane to search a solution on
9558 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9560 const double tol = numeric_limits<double>::min();
9561 gp_XYZ center(0,0,0);
9562 for ( i = 0; i < _simplices.size(); ++i )
9564 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
9565 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
9566 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9568 vecs.back() = vecs[0];
9569 center /= _simplices.size();
9571 gp_XYZ zAxis(0,0,0);
9572 for ( i = 0; i < _simplices.size(); ++i )
9573 zAxis += vecs[i] ^ vecs[i+1];
9576 for ( i = 0; i < _simplices.size(); ++i )
9579 if ( yAxis.SquareModulus() > tol )
9582 gp_XYZ xAxis = yAxis ^ zAxis;
9583 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9584 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9585 // p0.Distance( _simplices[2]._nPrev ));
9586 // gp_XYZ center = smoothLaplacian();
9587 // gp_XYZ xAxis, yAxis, zAxis;
9588 // for ( i = 0; i < _simplices.size(); ++i )
9590 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9591 // if ( xAxis.SquareModulus() > tol*tol )
9594 // for ( i = 1; i < _simplices.size(); ++i )
9596 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9597 // zAxis = xAxis ^ yAxis;
9598 // if ( zAxis.SquareModulus() > tol*tol )
9601 // if ( i == _simplices.size() ) return newPos;
9603 yAxis = zAxis ^ xAxis;
9604 xAxis /= xAxis.Modulus();
9605 yAxis /= yAxis.Modulus();
9607 // get half-planes of _simplices
9609 vector< _halfPlane > halfPlns( _simplices.size() );
9611 for ( size_t i = 0; i < _simplices.size(); ++i )
9613 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9614 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
9615 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9616 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9617 gp_XY vec12 = p2 - p1;
9618 double dist12 = vec12.Modulus();
9622 halfPlns[ nbHP ]._pos = p1;
9623 halfPlns[ nbHP ]._dir = vec12;
9624 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9628 // intersect boundaries of half-planes, define state of intersection points
9629 // in relation to all half-planes and calculate internal point of a 2D polygon
9632 gp_XY newPos2D (0,0);
9634 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9635 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9636 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9638 vector< vector< TIntPntState > > allIntPnts( nbHP );
9639 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9641 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9642 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9644 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9645 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9648 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9650 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9652 if ( iHP1 == iHP2 ) continue;
9654 TIntPntState & ips1 = intPnts1[ iHP2 ];
9655 if ( ips1.second == UNDEF )
9657 // find an intersection point of boundaries of iHP1 and iHP2
9659 if ( iHP2 == iPrev ) // intersection with neighbors is known
9660 ips1.first = halfPlns[ iHP1 ]._pos;
9661 else if ( iHP2 == iNext )
9662 ips1.first = halfPlns[ iHP2 ]._pos;
9663 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9664 ips1.second = NO_INT;
9666 // classify the found intersection point
9667 if ( ips1.second != NO_INT )
9669 ips1.second = NOT_OUT;
9670 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9671 if ( i != iHP1 && i != iHP2 &&
9672 halfPlns[ i ].IsOut( ips1.first, tol ))
9673 ips1.second = IS_OUT;
9675 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9676 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9677 TIntPntState & ips2 = intPnts2[ iHP1 ];
9680 if ( ips1.second == NOT_OUT )
9683 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9687 // find a NOT_OUT segment of boundary which is located between
9688 // two NOT_OUT int points
9691 continue; // no such a segment
9695 // sort points along the boundary
9696 map< double, TIntPntState* > ipsByParam;
9697 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9699 TIntPntState & ips1 = intPnts1[ iHP2 ];
9700 if ( ips1.second != NO_INT )
9702 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9703 double param = op * halfPlns[ iHP1 ]._dir;
9704 ipsByParam.insert( make_pair( param, & ips1 ));
9707 // look for two neighboring NOT_OUT points
9709 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9710 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9712 TIntPntState & ips1 = *(u2ips->second);
9713 if ( ips1.second == NOT_OUT )
9714 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9715 else if ( nbNotOut >= 2 )
9722 if ( nbNotOut >= 2 )
9724 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9727 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9734 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9743 #else // OLD_NEF_POLYGON
9744 { ////////////////////////////////// NEW
9745 gp_XYZ newPos(0,0,0);
9747 // get a plane to search a solution on
9750 gp_XYZ center(0,0,0);
9751 for ( i = 0; i < _simplices.size(); ++i )
9752 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9753 center /= _simplices.size();
9755 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9756 for ( i = 0; i < _simplices.size(); ++i )
9757 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9758 vecs.back() = vecs[0];
9760 const double tol = numeric_limits<double>::min();
9761 gp_XYZ zAxis(0,0,0);
9762 for ( i = 0; i < _simplices.size(); ++i )
9764 gp_XYZ cross = vecs[i] ^ vecs[i+1];
9767 if ( cross * zAxis < tol )
9768 zAxis += cross.Reversed();
9772 catch (Standard_Failure) { // if |cross| == 0.
9777 for ( i = 0; i < _simplices.size(); ++i )
9780 if ( yAxis.SquareModulus() > tol )
9783 gp_XYZ xAxis = yAxis ^ zAxis;
9784 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9785 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9786 // p0.Distance( _simplices[2]._nPrev ));
9787 // gp_XYZ center = smoothLaplacian();
9788 // gp_XYZ xAxis, yAxis, zAxis;
9789 // for ( i = 0; i < _simplices.size(); ++i )
9791 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9792 // if ( xAxis.SquareModulus() > tol*tol )
9795 // for ( i = 1; i < _simplices.size(); ++i )
9797 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9798 // zAxis = xAxis ^ yAxis;
9799 // if ( zAxis.SquareModulus() > tol*tol )
9802 // if ( i == _simplices.size() ) return newPos;
9804 yAxis = zAxis ^ xAxis;
9805 xAxis /= xAxis.Modulus();
9806 yAxis /= yAxis.Modulus();
9808 // get half-planes of _simplices
9810 vector< _halfPlane > halfPlns( _simplices.size() );
9812 for ( size_t i = 0; i < _simplices.size(); ++i )
9814 const gp_XYZ& OP1 = vecs[ i ];
9815 const gp_XYZ& OP2 = vecs[ i+1 ];
9816 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9817 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9818 gp_XY vec12 = p2 - p1;
9819 double dist12 = vec12.Modulus();
9823 halfPlns[ nbHP ]._pos = p1;
9824 halfPlns[ nbHP ]._dir = vec12;
9825 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9829 // intersect boundaries of half-planes, define state of intersection points
9830 // in relation to all half-planes and calculate internal point of a 2D polygon
9833 gp_XY newPos2D (0,0);
9835 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9836 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9837 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9839 vector< vector< TIntPntState > > allIntPnts( nbHP );
9840 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9842 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9843 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9845 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9846 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9849 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9851 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9853 if ( iHP1 == iHP2 ) continue;
9855 TIntPntState & ips1 = intPnts1[ iHP2 ];
9856 if ( ips1.second == UNDEF )
9858 // find an intersection point of boundaries of iHP1 and iHP2
9860 if ( iHP2 == iPrev ) // intersection with neighbors is known
9861 ips1.first = halfPlns[ iHP1 ]._pos;
9862 else if ( iHP2 == iNext )
9863 ips1.first = halfPlns[ iHP2 ]._pos;
9864 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9865 ips1.second = NO_INT;
9867 // classify the found intersection point
9868 if ( ips1.second != NO_INT )
9870 ips1.second = NOT_OUT;
9871 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9872 if ( i != iHP1 && i != iHP2 &&
9873 halfPlns[ i ].IsOut( ips1.first, tol ))
9874 ips1.second = IS_OUT;
9876 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9877 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9878 TIntPntState & ips2 = intPnts2[ iHP1 ];
9881 if ( ips1.second == NOT_OUT )
9884 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9888 // find a NOT_OUT segment of boundary which is located between
9889 // two NOT_OUT int points
9892 continue; // no such a segment
9896 // sort points along the boundary
9897 map< double, TIntPntState* > ipsByParam;
9898 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9900 TIntPntState & ips1 = intPnts1[ iHP2 ];
9901 if ( ips1.second != NO_INT )
9903 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9904 double param = op * halfPlns[ iHP1 ]._dir;
9905 ipsByParam.insert( make_pair( param, & ips1 ));
9908 // look for two neighboring NOT_OUT points
9910 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9911 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9913 TIntPntState & ips1 = *(u2ips->second);
9914 if ( ips1.second == NOT_OUT )
9915 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9916 else if ( nbNotOut >= 2 )
9923 if ( nbNotOut >= 2 )
9925 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9928 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9935 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9944 #endif // OLD_NEF_POLYGON
9946 //================================================================================
9948 * \brief Add a new segment to _LayerEdge during inflation
9950 //================================================================================
9952 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
9957 if ( len > _maxLen )
9960 Block( eos.GetData() );
9962 const double lenDelta = len - _len;
9963 // if ( lenDelta < 0 )
9965 if ( lenDelta < len * 1e-3 )
9967 Block( eos.GetData() );
9971 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9972 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
9974 if ( eos._hyp.IsOffsetMethod() )
9978 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
9979 while ( faceIt->more() )
9981 const SMDS_MeshElement* face = faceIt->next();
9982 if ( !eos.GetNormal( face, faceNorm ))
9985 // translate plane of a face
9986 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
9988 // find point of intersection of the face plane located at baryCenter
9989 // and _normal located at newXYZ
9990 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
9991 double dot = ( faceNorm.XYZ() * _normal );
9992 if ( dot < std::numeric_limits<double>::min() )
9993 dot = lenDelta * 1e-3;
9994 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
9995 newXYZ += step * _normal;
9997 _lenFactor = _normal * ( newXYZ - oldXYZ ) / lenDelta; // _lenFactor is used in InvalidateStep()
10001 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
10004 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
10005 _pos.push_back( newXYZ );
10007 if ( !eos._sWOL.IsNull() )
10008 if ( !UpdatePositionOnSWOL( n, 2*lenDelta, eos, helper ))
10010 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
10012 Block( eos.GetData() );
10019 if ( eos.ShapeType() != TopAbs_FACE )
10021 for ( size_t i = 0; i < _neibors.size(); ++i )
10022 //if ( _len > _neibors[i]->GetSmooLen() )
10023 _neibors[i]->Set( MOVED );
10027 dumpMove( n ); //debug
10031 //================================================================================
10033 * \brief Update last position on SWOL by projecting node on SWOL
10035 //================================================================================
10037 bool _LayerEdge::UpdatePositionOnSWOL( SMDS_MeshNode* n,
10039 _EdgesOnShape& eos,
10040 SMESH_MesherHelper& helper )
10044 if ( eos.SWOLType() == TopAbs_EDGE )
10046 double u = Precision::Infinite(); // to force projection w/o distance check
10047 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u, tol, /*force=*/true, distXYZ );
10048 _pos.back().SetCoord( u, 0, 0 );
10049 if ( _nodes.size() > 1 && uvOK )
10051 SMDS_EdgePositionPtr pos = n->GetPosition();
10052 pos->SetUParameter( u );
10055 else // TopAbs_FACE
10057 gp_XY uv( Precision::Infinite(), 0 );
10058 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv, tol, /*force=*/true, distXYZ );
10059 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
10060 if ( _nodes.size() > 1 && uvOK )
10062 SMDS_FacePositionPtr pos = n->GetPosition();
10063 pos->SetUParameter( uv.X() );
10064 pos->SetVParameter( uv.Y() );
10069 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
10074 //================================================================================
10076 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
10078 //================================================================================
10080 void _LayerEdge::Block( _SolidData& data )
10082 //if ( Is( BLOCKED )) return;
10085 SMESH_Comment msg( "#BLOCK shape=");
10086 msg << data.GetShapeEdges( this )->_shapeID
10087 << ", nodes " << _nodes[0]->GetID() << ", " << _nodes.back()->GetID();
10088 dumpCmd( msg + " -- BEGIN");
10091 std::queue<_LayerEdge*> queue;
10092 queue.push( this );
10094 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
10095 while ( !queue.empty() )
10097 _LayerEdge* edge = queue.front(); queue.pop();
10098 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
10099 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
10100 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
10102 _LayerEdge* neibor = edge->_neibors[iN];
10103 if ( neibor->_maxLen < edge->_maxLen * 1.01 )
10105 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
10106 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
10107 double minDist = pSrc.SquareDistance( pSrcN );
10108 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
10109 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
10110 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
10111 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
10112 //if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() ) viscous_layers_00/A3
10114 //newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
10115 // newMaxLen *= Min( edge->_lenFactor / neibor->_lenFactor,
10116 // neibor->_lenFactor / edge->_lenFactor );
10118 if ( neibor->_maxLen > newMaxLen )
10120 neibor->SetMaxLen( newMaxLen );
10121 if ( neibor->_maxLen < neibor->_len )
10123 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
10124 int lastStep = neibor->Is( BLOCKED ) ? 1 : 0;
10125 while ( neibor->_len > neibor->_maxLen &&
10126 neibor->NbSteps() > lastStep )
10127 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
10128 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
10129 //neibor->Block( data );
10131 queue.push( neibor );
10135 dumpCmd( msg + " -- END");
10138 //================================================================================
10140 * \brief Remove last inflation step
10142 //================================================================================
10144 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
10146 if ( _pos.size() > curStep && _nodes.size() > 1 )
10148 _pos.resize( curStep );
10150 gp_Pnt nXYZ = _pos.back();
10151 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
10152 SMESH_TNodeXYZ curXYZ( n );
10153 if ( !eos._sWOL.IsNull() )
10155 TopLoc_Location loc;
10156 if ( eos.SWOLType() == TopAbs_EDGE )
10158 SMDS_EdgePositionPtr pos = n->GetPosition();
10159 pos->SetUParameter( nXYZ.X() );
10161 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
10162 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
10166 SMDS_FacePositionPtr pos = n->GetPosition();
10167 pos->SetUParameter( nXYZ.X() );
10168 pos->SetVParameter( nXYZ.Y() );
10169 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
10170 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
10173 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
10176 if ( restoreLength )
10178 if ( NbSteps() == 0 )
10180 else if ( IsOnFace() && Is( MOVED ))
10181 _len = ( nXYZ.XYZ() - SMESH_NodeXYZ( _nodes[0] )) * _normal;
10183 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
10189 //================================================================================
10191 * \brief Return index of a _pos distant from _normal
10193 //================================================================================
10195 int _LayerEdge::GetSmoothedPos( const double tol )
10198 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
10200 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
10201 if ( normDist > tol * tol )
10207 //================================================================================
10209 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
10211 //================================================================================
10213 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
10215 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
10218 // find the 1st smoothed _pos
10219 int iSmoothed = GetSmoothedPos( tol );
10220 if ( !iSmoothed ) return;
10222 gp_XYZ normal = _normal;
10223 if ( Is( NORMAL_UPDATED ))
10226 for ( size_t i = 0; i < _neibors.size(); ++i )
10228 if ( _neibors[i]->IsOnFace() )
10230 double dot = _normal * _neibors[i]->_normal;
10231 if ( dot < minDot )
10233 normal = _neibors[i]->_normal;
10238 if ( minDot == 1. )
10239 for ( size_t i = 1; i < _pos.size(); ++i )
10241 normal = _pos[i] - _pos[0];
10242 double size = normal.Modulus();
10243 if ( size > RealSmall() )
10250 const double r = 0.2;
10251 for ( int iter = 0; iter < 50; ++iter )
10254 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
10256 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
10257 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
10259 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
10260 double newLen = ( 1-r ) * midLen + r * segLen[i];
10261 const_cast< double& >( segLen[i] ) = newLen;
10262 // check angle between normal and (_pos[i+1], _pos[i] )
10263 gp_XYZ posDir = _pos[i+1] - _pos[i];
10264 double size = posDir.SquareModulus();
10265 if ( size > RealSmall() )
10266 minDot = Min( minDot, ( normal * posDir ) * ( normal * posDir ) / size );
10268 if ( minDot > 0.5 * 0.5 )
10274 //================================================================================
10276 * \brief Print flags
10278 //================================================================================
10280 std::string _LayerEdge::DumpFlags() const
10282 SMESH_Comment dump;
10283 for ( int flag = 1; flag < 0x1000000; flag *= 2 )
10284 if ( _flags & flag )
10286 EFlags f = (EFlags) flag;
10288 case TO_SMOOTH: dump << "TO_SMOOTH"; break;
10289 case MOVED: dump << "MOVED"; break;
10290 case SMOOTHED: dump << "SMOOTHED"; break;
10291 case DIFFICULT: dump << "DIFFICULT"; break;
10292 case ON_CONCAVE_FACE: dump << "ON_CONCAVE_FACE"; break;
10293 case BLOCKED: dump << "BLOCKED"; break;
10294 case INTERSECTED: dump << "INTERSECTED"; break;
10295 case NORMAL_UPDATED: dump << "NORMAL_UPDATED"; break;
10296 case UPD_NORMAL_CONV: dump << "UPD_NORMAL_CONV"; break;
10297 case MARKED: dump << "MARKED"; break;
10298 case MULTI_NORMAL: dump << "MULTI_NORMAL"; break;
10299 case NEAR_BOUNDARY: dump << "NEAR_BOUNDARY"; break;
10300 case SMOOTHED_C1: dump << "SMOOTHED_C1"; break;
10301 case DISTORTED: dump << "DISTORTED"; break;
10302 case RISKY_SWOL: dump << "RISKY_SWOL"; break;
10303 case SHRUNK: dump << "SHRUNK"; break;
10304 case UNUSED_FLAG: dump << "UNUSED_FLAG"; break;
10308 cout << dump << endl;
10313 //================================================================================
10315 * \brief Create layers of prisms
10317 //================================================================================
10319 bool _ViscousBuilder::refine(_SolidData& data)
10321 SMESH_MesherHelper& helper = data.GetHelper();
10322 helper.SetElementsOnShape(false);
10324 Handle(Geom_Curve) curve;
10325 Handle(ShapeAnalysis_Surface) surface;
10326 TopoDS_Edge geomEdge;
10327 TopoDS_Face geomFace;
10328 TopLoc_Location loc;
10331 vector< gp_XYZ > pos3D;
10332 bool isOnEdge, isTooConvexFace = false;
10333 TGeomID prevBaseId = -1;
10334 TNode2Edge* n2eMap = 0;
10335 TNode2Edge::iterator n2e;
10337 // Create intermediate nodes on each _LayerEdge
10339 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
10341 _EdgesOnShape& eos = data._edgesOnShape[iS];
10342 if ( eos._edges.empty() ) continue;
10344 if ( eos._edges[0]->_nodes.size() < 2 )
10345 continue; // on _noShrinkShapes
10347 // get data of a shrink shape
10349 geomEdge.Nullify(); geomFace.Nullify();
10350 curve.Nullify(); surface.Nullify();
10351 if ( !eos._sWOL.IsNull() )
10353 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
10356 geomEdge = TopoDS::Edge( eos._sWOL );
10357 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
10361 geomFace = TopoDS::Face( eos._sWOL );
10362 surface = helper.GetSurface( geomFace );
10365 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
10367 geomFace = TopoDS::Face( eos._shape );
10368 surface = helper.GetSurface( geomFace );
10369 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
10370 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
10371 eos._eosC1[ i ]->_toSmooth = true;
10373 isTooConvexFace = false;
10374 if ( _ConvexFace* cf = data.GetConvexFace( eos._shapeID ))
10375 isTooConvexFace = cf->_isTooCurved;
10378 vector< double > segLen;
10379 for ( size_t i = 0; i < eos._edges.size(); ++i )
10381 _LayerEdge& edge = *eos._edges[i];
10382 if ( edge._pos.size() < 2 )
10385 // get accumulated length of segments
10386 segLen.resize( edge._pos.size() );
10388 if ( eos._sWOL.IsNull() )
10390 bool useNormal = true;
10391 bool usePos = false;
10392 bool smoothed = false;
10393 double preci = 0.1 * edge._len;
10394 if ( eos._toSmooth && edge._pos.size() > 2 )
10396 smoothed = edge.GetSmoothedPos( preci );
10400 if ( !surface.IsNull() && !isTooConvexFace ) // edge smoothed on FACE
10402 useNormal = usePos = false;
10403 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
10404 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
10406 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
10407 if ( surface->Gap() < 2. * edge._len )
10408 segLen[j] = surface->Gap();
10414 else if ( !edge.Is( _LayerEdge::NORMAL_UPDATED ))
10416 #ifndef __NODES_AT_POS
10417 useNormal = usePos = false;
10418 edge._pos[1] = edge._pos.back();
10419 edge._pos.resize( 2 );
10420 segLen.resize( 2 );
10421 segLen[ 1 ] = edge._len;
10424 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
10426 useNormal = usePos = false;
10427 _LayerEdge tmpEdge; // get original _normal
10428 tmpEdge._nodes.push_back( edge._nodes[0] );
10429 if ( !setEdgeData( tmpEdge, eos, helper, data ))
10432 for ( size_t j = 1; j < edge._pos.size(); ++j )
10433 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
10437 for ( size_t j = 1; j < edge._pos.size(); ++j )
10438 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
10442 for ( size_t j = 1; j < edge._pos.size(); ++j )
10443 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
10447 bool swapped = ( edge._pos.size() > 2 );
10451 for ( size_t j = 1; j < edge._pos.size()-1; ++j )
10452 if ( segLen[j] > segLen.back() )
10454 segLen.erase( segLen.begin() + j );
10455 edge._pos.erase( edge._pos.begin() + j );
10458 else if ( segLen[j] < segLen[j-1] )
10460 std::swap( segLen[j], segLen[j-1] );
10461 std::swap( edge._pos[j], edge._pos[j-1] );
10466 // smooth a path formed by edge._pos
10467 #ifndef __NODES_AT_POS
10468 if (( smoothed ) /*&&
10469 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
10470 edge.SmoothPos( segLen, preci );
10473 else if ( eos._isRegularSWOL ) // usual SWOL
10475 if ( edge.Is( _LayerEdge::SMOOTHED ))
10477 SMESH_NodeXYZ p0( edge._nodes[0] );
10478 for ( size_t j = 1; j < edge._pos.size(); ++j )
10480 gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10481 segLen[j] = ( pj - p0 ) * edge._normal;
10486 for ( size_t j = 1; j < edge._pos.size(); ++j )
10487 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
10490 else // SWOL is surface with singularities or irregularly parametrized curve
10492 pos3D.resize( edge._pos.size() );
10494 if ( !surface.IsNull() )
10495 for ( size_t j = 0; j < edge._pos.size(); ++j )
10496 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10497 else if ( !curve.IsNull() )
10498 for ( size_t j = 0; j < edge._pos.size(); ++j )
10499 pos3D[j] = curve->Value( edge._pos[j].X() ).XYZ();
10501 for ( size_t j = 1; j < edge._pos.size(); ++j )
10502 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
10505 // allocate memory for new nodes if it is not yet refined
10506 const SMDS_MeshNode* tgtNode = edge._nodes.back();
10507 if ( edge._nodes.size() == 2 )
10509 #ifdef __NODES_AT_POS
10510 int nbNodes = edge._pos.size();
10512 int nbNodes = eos._hyp.GetNumberLayers() + 1;
10514 edge._nodes.resize( nbNodes, 0 );
10515 edge._nodes[1] = 0;
10516 edge._nodes.back() = tgtNode;
10518 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
10519 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
10520 if ( baseShapeId != prevBaseId )
10522 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
10523 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
10524 prevBaseId = baseShapeId;
10526 _LayerEdge* edgeOnSameNode = 0;
10527 bool useExistingPos = false;
10528 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
10530 edgeOnSameNode = n2e->second;
10531 useExistingPos = ( edgeOnSameNode->_len < edge._len ||
10532 segLen[0] == segLen.back() ); // too short inflation step (bos #20643)
10533 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
10534 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
10537 SMDS_EdgePositionPtr epos = lastPos;
10538 epos->SetUParameter( otherTgtPos.X() );
10542 SMDS_FacePositionPtr fpos = lastPos;
10543 fpos->SetUParameter( otherTgtPos.X() );
10544 fpos->SetVParameter( otherTgtPos.Y() );
10548 // create intermediate nodes
10549 const double h0 = eos._hyp.Get1stLayerThickness( segLen.back() );
10550 const double zeroLen = std::numeric_limits<double>::min();
10551 double hSum = 0, hi = h0/eos._hyp.GetStretchFactor();
10553 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
10555 // compute an intermediate position
10556 hi *= eos._hyp.GetStretchFactor();
10558 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
10560 int iPrevSeg = iSeg-1;
10561 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
10563 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
10564 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
10565 #ifdef __NODES_AT_POS
10566 pos = edge._pos[ iStep ];
10568 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
10569 if ( !eos._sWOL.IsNull() )
10571 // compute XYZ by parameters <pos>
10576 pos = curve->Value( u ).Transformed(loc);
10578 else if ( eos._isRegularSWOL )
10580 uv.SetCoord( pos.X(), pos.Y() );
10582 pos = surface->Value( pos.X(), pos.Y() );
10586 uv.SetCoord( pos.X(), pos.Y() );
10587 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
10588 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
10590 pos = surface->Value( uv );
10593 // create or update the node
10596 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
10597 if ( !eos._sWOL.IsNull() )
10600 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
10602 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
10606 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
10611 if ( !eos._sWOL.IsNull() )
10613 // make average pos from new and current parameters
10616 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
10617 if ( useExistingPos )
10618 u = helper.GetNodeU( geomEdge, node );
10619 pos = curve->Value( u ).Transformed(loc);
10621 SMDS_EdgePositionPtr epos = node->GetPosition();
10622 epos->SetUParameter( u );
10626 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
10627 if ( useExistingPos )
10628 uv = helper.GetNodeUV( geomFace, node );
10629 pos = surface->Value( uv );
10631 SMDS_FacePositionPtr fpos = node->GetPosition();
10632 fpos->SetUParameter( uv.X() );
10633 fpos->SetVParameter( uv.Y() );
10636 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
10638 } // loop on edge._nodes
10640 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
10643 edge._pos.back().SetCoord( u, 0,0);
10645 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
10647 if ( edgeOnSameNode )
10648 edgeOnSameNode->_pos.back() = edge._pos.back();
10651 } // loop on eos._edges to create nodes
10654 if ( !getMeshDS()->IsEmbeddedMode() )
10655 // Log node movement
10656 for ( size_t i = 0; i < eos._edges.size(); ++i )
10658 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
10659 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
10666 helper.SetElementsOnShape(true);
10668 vector< vector<const SMDS_MeshNode*>* > nnVec;
10669 set< vector<const SMDS_MeshNode*>* > nnSet;
10670 set< int > degenEdgeInd;
10671 vector<const SMDS_MeshElement*> degenVols;
10673 TopExp_Explorer exp( data._solid, TopAbs_FACE );
10674 for ( ; exp.More(); exp.Next() )
10676 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
10677 if ( data._ignoreFaceIds.count( faceID ))
10679 _EdgesOnShape* eos = data.GetShapeEdges( faceID );
10680 SMDS_MeshGroup* group = StdMeshers_ViscousLayers::CreateGroup( eos->_hyp.GetGroupName(),
10683 std::vector< const SMDS_MeshElement* > vols;
10684 const bool isReversedFace = data._reversedFaceIds.count( faceID );
10685 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
10686 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
10687 while ( fIt->more() )
10689 const SMDS_MeshElement* face = fIt->next();
10690 const int nbNodes = face->NbCornerNodes();
10691 nnVec.resize( nbNodes );
10693 degenEdgeInd.clear();
10694 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
10695 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
10696 for ( int iN = 0; iN < nbNodes; ++iN )
10698 const SMDS_MeshNode* n = nIt->next();
10699 _LayerEdge* edge = data._n2eMap[ n ];
10700 const int i = isReversedFace ? nbNodes-1-iN : iN;
10701 nnVec[ i ] = & edge->_nodes;
10702 maxZ = std::max( maxZ, nnVec[ i ]->size() );
10703 minZ = std::min( minZ, nnVec[ i ]->size() );
10705 if ( helper.HasDegeneratedEdges() )
10706 nnSet.insert( nnVec[ i ]);
10711 if ( 0 < nnSet.size() && nnSet.size() < 3 )
10715 const SMDS_MeshElement* vol;
10722 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10724 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
10725 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
10726 vols.push_back( vol );
10729 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10731 for ( int iN = 0; iN < nbNodes; ++iN )
10732 if ( nnVec[ iN ]->size() < iZ+1 )
10733 degenEdgeInd.insert( iN );
10735 if ( degenEdgeInd.size() == 1 ) // PYRAM
10737 int i2 = *degenEdgeInd.begin();
10738 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
10739 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
10740 vol = helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
10741 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
10742 vols.push_back( vol );
10746 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
10747 vol = helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
10748 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
10749 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
10750 (*nnVec[ i3 ])[ iZ ]);
10751 vols.push_back( vol );
10759 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10761 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
10762 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
10763 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
10764 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
10765 vols.push_back( vol );
10768 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10770 for ( int iN = 0; iN < nbNodes; ++iN )
10771 if ( nnVec[ iN ]->size() < iZ+1 )
10772 degenEdgeInd.insert( iN );
10774 switch ( degenEdgeInd.size() )
10778 int i2 = *degenEdgeInd.begin();
10779 int i3 = *degenEdgeInd.rbegin();
10780 bool ok = ( i3 - i2 == 1 );
10781 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
10782 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
10783 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
10785 vol = helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
10786 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
10787 vols.push_back( vol );
10789 degenVols.push_back( vol );
10793 default: // degen HEX
10795 vol = helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
10796 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
10797 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
10798 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
10799 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
10800 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
10801 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
10802 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
10803 vols.push_back( vol );
10804 degenVols.push_back( vol );
10811 return error("Not supported type of element", data._index);
10813 } // switch ( nbNodes )
10816 for ( size_t i = 0; i < vols.size(); ++i )
10817 group->Add( vols[ i ]);
10819 } // while ( fIt->more() )
10822 if ( !degenVols.empty() )
10824 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
10825 if ( !err || err->IsOK() )
10827 SMESH_BadInputElements* badElems =
10828 new SMESH_BadInputElements( getMeshDS(), COMPERR_WARNING, "Bad quality volumes created" );
10829 badElems->myBadElements.insert( badElems->myBadElements.end(),
10830 degenVols.begin(),degenVols.end() );
10831 err.reset( badElems );
10838 namespace VISCOUS_3D
10841 //--------------------------------------------------------------------------------
10843 * \brief Pair of periodic FACEs
10845 struct PeriodicFaces
10847 typedef StdMeshers_ProjectionUtils::TrsfFinder3D Trsf;
10849 ShrinkFace* _shriFace[2];
10850 TNodeNodeMap _nnMap;
10853 PeriodicFaces( ShrinkFace* sf1, ShrinkFace* sf2 ): _shriFace{ sf1, sf2 } {}
10854 bool IncludeShrunk( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces ) const;
10855 bool MoveNodes( const TopoDS_Face& tgtFace );
10856 void Clear() { _nnMap.clear(); }
10857 bool IsEmpty() const { return _nnMap.empty(); }
10860 //--------------------------------------------------------------------------------
10862 * \brief Shrink FACE data used to find periodic FACEs
10866 // ................................................................................
10867 struct BndPart //!< part of FACE boundary, either shrink or no-shrink
10869 bool _isShrink, _isReverse;
10872 std::vector< SMESH_NodeXYZ > _nodes;
10873 TopAbs_ShapeEnum _vertSWOLType[2]; // shrink part includes VERTEXes
10874 AverageHyp* _vertHyp[2];
10875 double _edgeWOLLen[2]; // length of wol EDGE
10876 double _tol; // to compare _edgeWOLLen's
10879 _isShrink(0), _isReverse(0), _nbSegments(0), _hyp(0),
10880 _vertSWOLType{ TopAbs_WIRE, TopAbs_WIRE }, _vertHyp{ 0, 0 }, _edgeWOLLen{ 0., 0.}
10883 bool IsEqualLengthEWOL( const BndPart& other ) const
10885 return ( std::abs( _edgeWOLLen[0] - other._edgeWOLLen[0] ) < _tol &&
10886 std::abs( _edgeWOLLen[1] - other._edgeWOLLen[1] ) < _tol );
10889 bool operator==( const BndPart& other ) const
10891 return ( _isShrink == other._isShrink &&
10892 _nbSegments == other._nbSegments &&
10893 _nodes.size() == other._nodes.size() &&
10894 vertSWOLType1() == other.vertSWOLType1() &&
10895 vertSWOLType2() == other.vertSWOLType2() &&
10897 ( *_hyp == *other._hyp &&
10898 vertHyp1() == other.vertHyp1() &&
10899 vertHyp2() == other.vertHyp2() &&
10900 IsEqualLengthEWOL( other )))
10903 bool CanAppend( const BndPart& other )
10905 return ( _isShrink == other._isShrink &&
10907 ( *_hyp == *other._hyp &&
10908 *_hyp == vertHyp2() &&
10909 vertHyp2() == other.vertHyp1() ))
10912 void Append( const BndPart& other )
10914 _nbSegments += other._nbSegments;
10915 bool hasCommonNode = ( _nodes.back()->GetID() == other._nodes.front()->GetID() );
10916 _nodes.insert( _nodes.end(), other._nodes.begin() + hasCommonNode, other._nodes.end() );
10917 _vertSWOLType[1] = other._vertSWOLType[1];
10919 _vertHyp[1] = other._vertHyp[1];
10920 _edgeWOLLen[1] = other._edgeWOLLen[1];
10923 const SMDS_MeshNode* Node(size_t i) const
10925 return _nodes[ _isReverse ? ( _nodes.size() - 1 - i ) : i ]._node;
10927 void Reverse() { _isReverse = !_isReverse; }
10928 const TopAbs_ShapeEnum& vertSWOLType1() const { return _vertSWOLType[ _isReverse ]; }
10929 const TopAbs_ShapeEnum& vertSWOLType2() const { return _vertSWOLType[ !_isReverse ]; }
10930 const AverageHyp& vertHyp1() const { return *(_vertHyp[ _isReverse ]); }
10931 const AverageHyp& vertHyp2() const { return *(_vertHyp[ !_isReverse ]); }
10933 // ................................................................................
10935 SMESH_subMesh* _subMesh;
10936 _SolidData* _data1;
10937 _SolidData* _data2;
10939 std::list< BndPart > _boundary;
10940 int _boundarySize, _nbBoundaryParts;
10942 void Init( SMESH_subMesh* sm, _SolidData* sd1, _SolidData* sd2 )
10944 _subMesh = sm; _data1 = sd1; _data2 = sd2;
10946 bool IsSame( const TopoDS_Face& face ) const
10948 return _subMesh->GetSubShape().IsSame( face );
10950 bool IsShrunk( const TopTools_MapOfShape& shrunkFaces ) const
10952 return shrunkFaces.Contains( _subMesh->GetSubShape() );
10955 //================================================================================
10957 * Check if meshes on two FACEs are equal
10959 bool IsPeriodic( ShrinkFace& other, PeriodicFaces& periodic )
10961 if ( !IsSameNbElements( other ))
10964 this->SetBoundary();
10965 other.SetBoundary();
10966 if ( this->_boundarySize != other._boundarySize ||
10967 this->_nbBoundaryParts != other._nbBoundaryParts )
10970 for ( int isReverse = 0; isReverse < 2; ++isReverse )
10973 Reverse( _boundary );
10975 // check boundaries
10976 bool equalBoundary = false;
10977 for ( int iP = 0; iP < _nbBoundaryParts && !equalBoundary; ++iP )
10979 if ( ! ( equalBoundary = ( this->_boundary == other._boundary )))
10980 // set first part at end
10981 _boundary.splice( _boundary.end(), _boundary, _boundary.begin() );
10983 if ( !equalBoundary )
10986 // check connectivity
10987 std::set<const SMDS_MeshElement*> elemsThis, elemsOther;
10988 this->GetElements( elemsThis );
10989 other.GetElements( elemsOther );
10990 SMESH_MeshEditor::Sew_Error err =
10991 SMESH_MeshEditor::FindMatchingNodes( elemsThis, elemsOther,
10992 this->_boundary.front().Node(0),
10993 other._boundary.front().Node(0),
10994 this->_boundary.front().Node(1),
10995 other._boundary.front().Node(1),
10997 if ( err != SMESH_MeshEditor::SEW_OK )
11000 // check node positions
11001 std::vector< gp_XYZ > srcPnts, tgtPnts;
11002 this->GetBoundaryPoints( srcPnts );
11003 other.GetBoundaryPoints( tgtPnts );
11004 if ( !periodic._trsf.Solve( srcPnts, tgtPnts )) {
11007 double tol = std::numeric_limits<double>::max(); // tolerance by segment size
11008 for ( size_t i = 1; i < srcPnts.size(); ++i ) {
11009 tol = Min( tol, ( srcPnts[i-1] - srcPnts[i] ).SquareModulus() );
11011 tol = 0.01 * Sqrt( tol );
11012 for ( BndPart& boundary : _boundary ) { // tolerance by VL thickness
11013 if ( boundary._isShrink )
11014 tol = Min( tol, boundary._hyp->Get1stLayerThickness() / 50. );
11016 bool nodeCoincide = true;
11017 TNodeNodeMap::iterator n2n = periodic._nnMap.begin();
11018 for ( ; n2n != periodic._nnMap.end() && nodeCoincide; ++n2n )
11020 SMESH_NodeXYZ nSrc = n2n->first;
11021 SMESH_NodeXYZ nTgt = n2n->second;
11022 gp_XYZ pTgt = periodic._trsf.Transform( nSrc );
11023 nodeCoincide = (( pTgt - nTgt ).SquareModulus() < tol * tol );
11025 if ( nodeCoincide )
11031 bool IsSameNbElements( ShrinkFace& other ) // check number of mesh faces
11033 SMESHDS_SubMesh* sm1 = this->_subMesh->GetSubMeshDS();
11034 SMESHDS_SubMesh* sm2 = other._subMesh->GetSubMeshDS();
11035 return ( sm1->NbElements() == sm2->NbElements() &&
11036 sm1->NbNodes() == sm2->NbNodes() );
11039 void Reverse( std::list< BndPart >& boundary )
11041 boundary.reverse();
11042 for ( std::list< BndPart >::iterator part = boundary.begin(); part != boundary.end(); ++part )
11048 if ( !_boundary.empty() )
11051 TopoDS_Face F = TopoDS::Face( _subMesh->GetSubShape() );
11052 if ( F.Orientation() >= TopAbs_INTERNAL ) F.Orientation( TopAbs_FORWARD );
11053 std::list< TopoDS_Edge > edges;
11054 std::list< int > nbEdgesInWire;
11055 /*int nbWires =*/ SMESH_Block::GetOrderedEdges (F, edges, nbEdgesInWire);
11057 // std::list< TopoDS_Edge >::iterator edgesEnd = edges.end();
11058 // if ( nbWires > 1 ) {
11059 // edgesEnd = edges.begin();
11060 // std::advance( edgesEnd, nbEdgesInWire.front() );
11062 StdMeshers_FaceSide fSide( F, edges, _subMesh->GetFather(),
11063 /*fwd=*/true, /*skipMedium=*/true );
11064 _boundarySize = fSide.NbSegments();
11066 //TopoDS_Vertex vv[2];
11067 //std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
11068 for ( int iE = 0; iE < nbEdgesInWire.front(); ++iE )
11072 std::vector<const SMDS_MeshNode*> nodes = fSide.GetOrderedNodes( iE );
11073 bndPart._nodes.assign( nodes.begin(), nodes.end() );
11074 bndPart._nbSegments = bndPart._nodes.size() - 1;
11076 _EdgesOnShape* eos = _data1->GetShapeEdges( fSide.EdgeID( iE ));
11078 bndPart._isShrink = ( eos->SWOLType() == TopAbs_FACE );
11079 if ( bndPart._isShrink )
11080 if (( _data1->_noShrinkShapes.count( eos->_shapeID )) ||
11081 ( _data2 && _data2->_noShrinkShapes.count( eos->_shapeID )))
11082 bndPart._isShrink = false;
11084 if ( bndPart._isShrink )
11086 bndPart._hyp = & eos->_hyp;
11087 _EdgesOnShape* eov[2] = { _data1->GetShapeEdges( fSide.FirstVertex( iE )),
11088 _data1->GetShapeEdges( fSide.LastVertex ( iE )) };
11089 for ( int iV = 0; iV < 2; ++iV )
11091 bndPart._vertHyp [iV] = & eov[iV]->_hyp;
11092 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11093 if ( _data1->_noShrinkShapes.count( eov[iV]->_shapeID ))
11094 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11095 if ( _data2 && bndPart._vertSWOLType[iV] != TopAbs_SHAPE )
11097 eov[iV] = _data2->GetShapeEdges( iV ? fSide.LastVertex(iE) : fSide.FirstVertex(iE ));
11098 if ( _data2->_noShrinkShapes.count( eov[iV]->_shapeID ))
11099 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11100 else if ( eov[iV]->SWOLType() > bndPart._vertSWOLType[iV] )
11101 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11104 bndPart._edgeWOLLen[0] = fSide.EdgeLength( iE - 1 );
11105 bndPart._edgeWOLLen[1] = fSide.EdgeLength( iE + 1 );
11107 bndPart._tol = std::numeric_limits<double>::max(); // tolerance by segment size
11108 for ( size_t i = 1; i < bndPart._nodes.size(); ++i )
11109 bndPart._tol = Min( bndPart._tol,
11110 ( bndPart._nodes[i-1] - bndPart._nodes[i] ).SquareModulus() );
11113 if ( _boundary.empty() || ! _boundary.back().CanAppend( bndPart ))
11114 _boundary.push_back( bndPart );
11116 _boundary.back().Append( bndPart );
11119 _nbBoundaryParts = _boundary.size();
11120 if ( _nbBoundaryParts > 1 && _boundary.front()._isShrink == _boundary.back()._isShrink )
11122 _boundary.back().Append( _boundary.front() );
11123 _boundary.pop_front();
11124 --_nbBoundaryParts;
11128 void GetElements( std::set<const SMDS_MeshElement*>& theElems)
11130 if ( SMESHDS_SubMesh* sm = _subMesh->GetSubMeshDS() )
11131 for ( SMDS_ElemIteratorPtr fIt = sm->GetElements(); fIt->more(); )
11132 theElems.insert( theElems.end(), fIt->next() );
11137 void GetBoundaryPoints( std::vector< gp_XYZ >& points )
11139 points.reserve( _boundarySize );
11140 size_t nb = _boundary.rbegin()->_nodes.size();
11141 smIdType lastID = _boundary.rbegin()->Node( nb - 1 )->GetID();
11142 std::list< BndPart >::const_iterator part = _boundary.begin();
11143 for ( ; part != _boundary.end(); ++part )
11145 size_t nb = part->_nodes.size();
11147 size_t iR = nb - 1;
11148 size_t* i = part->_isReverse ? &iR : &iF;
11149 if ( part->_nodes[ *i ]->GetID() == lastID )
11151 for ( ; iF < nb; ++iF, --iR )
11152 points.push_back( part->_nodes[ *i ]);
11154 lastID = part->_nodes[ *i ]->GetID();
11157 }; // struct ShrinkFace
11159 //--------------------------------------------------------------------------------
11161 * \brief Periodic FACEs
11165 std::vector< ShrinkFace > _shrinkFaces;
11166 std::vector< PeriodicFaces > _periodicFaces;
11168 PeriodicFaces* GetPeriodic( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces )
11170 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11171 if ( _periodicFaces[ i ].IncludeShrunk( face, shrunkFaces ))
11172 return & _periodicFaces[ i ];
11175 void ClearPeriodic( const TopoDS_Face& face )
11177 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11178 if ( _periodicFaces[ i ]._shriFace[0]->IsSame( face ) ||
11179 _periodicFaces[ i ]._shriFace[1]->IsSame( face ))
11180 _periodicFaces[ i ].Clear();
11184 //================================================================================
11186 * Check if a pair includes the given FACE and the other FACE is already shrunk
11188 bool PeriodicFaces::IncludeShrunk( const TopoDS_Face& face,
11189 const TopTools_MapOfShape& shrunkFaces ) const
11191 if ( IsEmpty() ) return false;
11192 return (( _shriFace[0]->IsSame( face ) && _shriFace[1]->IsShrunk( shrunkFaces )) ||
11193 ( _shriFace[1]->IsSame( face ) && _shriFace[0]->IsShrunk( shrunkFaces )));
11196 //================================================================================
11198 * Make equal meshes on periodic faces by moving corresponding nodes
11200 bool PeriodicFaces::MoveNodes( const TopoDS_Face& tgtFace )
11202 int iTgt = _shriFace[1]->IsSame( tgtFace );
11203 int iSrc = 1 - iTgt;
11205 _SolidData* dataSrc = _shriFace[iSrc]->_data1;
11206 _SolidData* dataTgt = _shriFace[iTgt]->_data1;
11208 Trsf * trsf = & _trsf, trsfInverse;
11211 trsfInverse = _trsf;
11212 if ( !trsfInverse.Invert())
11214 trsf = &trsfInverse;
11216 SMESHDS_Mesh* meshDS = dataSrc->GetHelper().GetMeshDS();
11218 dumpFunction(SMESH_Comment("periodicMoveNodes_F")
11219 << _shriFace[iSrc]->_subMesh->GetId() << "_F"
11220 << _shriFace[iTgt]->_subMesh->GetId() );
11221 TNode2Edge::iterator n2e;
11222 TNodeNodeMap::iterator n2n = _nnMap.begin();
11223 for ( ; n2n != _nnMap.end(); ++n2n )
11225 const SMDS_MeshNode* const* nn = & n2n->first;
11226 const SMDS_MeshNode* nSrc = nn[ iSrc ];
11227 const SMDS_MeshNode* nTgt = nn[ iTgt ];
11229 if (( nSrc->GetPosition()->GetDim() == 2 ) ||
11230 (( n2e = dataSrc->_n2eMap.find( nSrc )) == dataSrc->_n2eMap.end() ))
11232 SMESH_NodeXYZ pSrc = nSrc;
11233 gp_XYZ pTgt = trsf->Transform( pSrc );
11234 meshDS->MoveNode( nTgt, pTgt.X(), pTgt.Y(), pTgt.Z() );
11238 _LayerEdge* leSrc = n2e->second;
11239 n2e = dataTgt->_n2eMap.find( nTgt );
11240 if ( n2e == dataTgt->_n2eMap.end() )
11242 _LayerEdge* leTgt = n2e->second;
11243 if ( leSrc->_nodes.size() != leTgt->_nodes.size() )
11245 for ( size_t iN = 1; iN < leSrc->_nodes.size(); ++iN )
11247 SMESH_NodeXYZ pSrc = leSrc->_nodes[ iN ];
11248 gp_XYZ pTgt = trsf->Transform( pSrc );
11249 meshDS->MoveNode( leTgt->_nodes[ iN ], pTgt.X(), pTgt.Y(), pTgt.Z() );
11251 dumpMove( leTgt->_nodes[ iN ]);
11255 bool done = ( n2n == _nnMap.end() );
11256 debugMsg( "PeriodicFaces::MoveNodes "
11257 << _shriFace[iSrc]->_subMesh->GetId() << " -> "
11258 << _shriFace[iTgt]->_subMesh->GetId() << " -- "
11259 << ( done ? "DONE" : "FAIL"));
11264 } // namespace VISCOUS_3D; Periodicity part
11267 //================================================================================
11269 * \brief Find FACEs to shrink, that are equally meshed before shrink (i.e. periodic)
11270 * and should remain equal after shrink
11272 //================================================================================
11274 void _ViscousBuilder::findPeriodicFaces()
11276 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11277 // _LayerEdge's inflated along FACE or EDGE)
11278 std::map< TGeomID, std::list< _SolidData* > > id2sdMap;
11279 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11281 _SolidData& data = _sdVec[i];
11282 std::map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11283 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11284 if ( s2s->second.ShapeType() == TopAbs_FACE )
11285 id2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11288 _periodicity.reset( new Periodicity );
11289 _periodicity->_shrinkFaces.resize( id2sdMap.size() );
11291 std::map< TGeomID, std::list< _SolidData* > >::iterator id2sdIt = id2sdMap.begin();
11292 for ( size_t i = 0; i < id2sdMap.size(); ++i, ++id2sdIt )
11294 _SolidData* sd1 = id2sdIt->second.front();
11295 _SolidData* sd2 = id2sdIt->second.back();
11296 _periodicity->_shrinkFaces[ i ].Init( _mesh->GetSubMeshContaining( id2sdIt->first ), sd1, sd2 );
11299 for ( size_t i1 = 0; i1 < _periodicity->_shrinkFaces.size(); ++i1 )
11300 for ( size_t i2 = i1 + 1; i2 < _periodicity->_shrinkFaces.size(); ++i2 )
11302 PeriodicFaces pf( & _periodicity->_shrinkFaces[ i1 ],
11303 & _periodicity->_shrinkFaces[ i2 ]);
11304 if ( pf._shriFace[0]->IsPeriodic( *pf._shriFace[1], pf ))
11306 _periodicity->_periodicFaces.push_back( pf );
11312 //================================================================================
11314 * \brief Shrink 2D mesh on faces to let space for inflated layers
11316 //================================================================================
11318 bool _ViscousBuilder::shrink(_SolidData& theData)
11320 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11321 // _LayerEdge's inflated along FACE or EDGE)
11322 map< TGeomID, list< _SolidData* > > f2sdMap;
11323 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11325 _SolidData& data = _sdVec[i];
11326 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11327 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11328 if ( s2s->second.ShapeType() == TopAbs_FACE && !_shrunkFaces.Contains( s2s->second ))
11330 f2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11332 // Put mesh faces on the shrunk FACE to the proxy sub-mesh to avoid
11333 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
11334 // by StdMeshers_QuadToTriaAdaptor
11335 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
11337 SMESH_ProxyMesh::SubMesh* proxySub =
11338 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
11339 if ( proxySub->NbElements() == 0 )
11341 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11342 while ( fIt->more() )
11344 const SMDS_MeshElement* f = fIt->next();
11345 // as a result 3D algo will use elements from proxySub and not from smDS
11346 proxySub->AddElement( f );
11347 f->setIsMarked( true );
11349 // Mark nodes on the FACE to discriminate them from nodes
11350 // added by addBoundaryElements(); marked nodes are to be smoothed while shrink()
11351 for ( int iN = 0, nbN = f->NbNodes(); iN < nbN; ++iN )
11353 const SMDS_MeshNode* n = f->GetNode( iN );
11354 if ( n->GetPosition()->GetDim() == 2 )
11355 n->setIsMarked( true );
11363 SMESH_MesherHelper helper( *_mesh );
11364 helper.ToFixNodeParameters( true );
11367 map< TGeomID, _Shrinker1D > e2shrMap;
11368 vector< _EdgesOnShape* > subEOS;
11369 vector< _LayerEdge* > lEdges;
11371 // loop on FACEs to shrink mesh on
11372 map< TGeomID, list< _SolidData* > >::iterator f2sd = f2sdMap.begin();
11373 for ( ; f2sd != f2sdMap.end(); ++f2sd )
11375 list< _SolidData* > & dataList = f2sd->second;
11376 if ( dataList.front()->_n2eMap.empty() ||
11377 dataList.back() ->_n2eMap.empty() )
11378 continue; // not yet computed
11379 if ( dataList.front() != &theData &&
11380 dataList.back() != &theData )
11383 _SolidData& data = *dataList.front();
11384 _SolidData* data2 = dataList.size() > 1 ? dataList.back() : 0;
11385 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
11386 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
11387 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
11389 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
11391 _shrunkFaces.Add( F );
11392 helper.SetSubShape( F );
11394 // ==============================
11395 // Use periodicity to move nodes
11396 // ==============================
11398 PeriodicFaces* periodic = _periodicity->GetPeriodic( F, _shrunkFaces );
11399 bool movedByPeriod = ( periodic && periodic->MoveNodes( F ));
11401 // ===========================
11402 // Prepare data for shrinking
11403 // ===========================
11405 // Collect nodes to smooth (they are marked at the beginning of this method)
11406 vector < const SMDS_MeshNode* > smoothNodes;
11408 if ( !movedByPeriod )
11410 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
11411 while ( nIt->more() )
11413 const SMDS_MeshNode* n = nIt->next();
11414 if ( n->isMarked() )
11415 smoothNodes.push_back( n );
11418 // Find out face orientation
11419 double refSign = 1;
11420 const set<TGeomID> ignoreShapes;
11422 if ( !smoothNodes.empty() )
11424 vector<_Simplex> simplices;
11425 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
11426 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of simplex nodes
11427 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
11428 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
11429 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper, refSign ))
11433 // Find _LayerEdge's inflated along F
11437 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
11438 /*complexFirst=*/true); //!!!
11439 while ( subIt->more() )
11441 const TGeomID subID = subIt->next()->GetId();
11442 if ( data._noShrinkShapes.count( subID ))
11444 _EdgesOnShape* eos = data.GetShapeEdges( subID );
11445 if ( !eos || eos->_sWOL.IsNull() )
11446 if ( data2 ) // check in adjacent SOLID
11448 eos = data2->GetShapeEdges( subID );
11449 if ( !eos || eos->_sWOL.IsNull() )
11452 subEOS.push_back( eos );
11454 if ( !movedByPeriod )
11455 for ( size_t i = 0; i < eos->_edges.size(); ++i )
11457 lEdges.push_back( eos->_edges[ i ] );
11458 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
11463 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
11464 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11465 while ( fIt->more() )
11466 if ( const SMDS_MeshElement* f = fIt->next() )
11467 dumpChangeNodes( f );
11470 // Replace source nodes by target nodes in mesh faces to shrink
11471 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
11472 const SMDS_MeshNode* nodes[20];
11473 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11475 _EdgesOnShape& eos = * subEOS[ iS ];
11476 for ( size_t i = 0; i < eos._edges.size(); ++i )
11478 _LayerEdge& edge = *eos._edges[i];
11479 const SMDS_MeshNode* srcNode = edge._nodes[0];
11480 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11481 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
11482 while ( fIt->more() )
11484 const SMDS_MeshElement* f = fIt->next();
11485 if ( !smDS->Contains( f ) || !f->isMarked() )
11487 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
11488 for ( int iN = 0; nIt->more(); ++iN )
11490 const SMDS_MeshNode* n = nIt->next();
11491 nodes[iN] = ( n == srcNode ? tgtNode : n );
11493 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
11494 dumpChangeNodes( f );
11500 // find out if a FACE is concave
11501 const bool isConcaveFace = isConcave( F, helper );
11503 // Create _SmoothNode's on face F
11504 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
11506 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
11507 const bool sortSimplices = isConcaveFace;
11508 for ( size_t i = 0; i < smoothNodes.size(); ++i )
11510 const SMDS_MeshNode* n = smoothNodes[i];
11511 nodesToSmooth[ i ]._node = n;
11512 // src nodes must be already replaced by tgt nodes to have tgt nodes in _simplices
11513 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
11514 // fix up incorrect uv of nodes on the FACE
11515 helper.GetNodeUV( F, n, 0, &isOkUV);
11520 //if ( nodesToSmooth.empty() ) continue;
11522 // Find EDGE's to shrink and set simpices to LayerEdge's
11523 set< _Shrinker1D* > eShri1D;
11525 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11527 _EdgesOnShape& eos = * subEOS[ iS ];
11528 if ( eos.SWOLType() == TopAbs_EDGE )
11530 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
11531 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
11532 if ( !movedByPeriod )
11534 _Shrinker1D& shrinker = e2shrMap[ edgeSM->GetId() ];
11535 eShri1D.insert( & shrinker );
11536 shrinker.AddEdge( eos._edges[0], eos, helper );
11537 // restore params of nodes on EDGE if the EDGE has been already
11538 // shrunk while shrinking other FACE
11539 shrinker.RestoreParams();
11542 for ( size_t i = 0; i < eos._edges.size(); ++i )
11544 _LayerEdge& edge = * eos._edges[i];
11545 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
11547 // additionally mark tgt node; only marked nodes will be used in SetNewLength2d()
11548 // not-marked nodes are those added by refine()
11549 edge._nodes.back()->setIsMarked( true );
11554 bool toFixTria = false; // to improve quality of trias by diagonal swap
11555 if ( isConcaveFace && !movedByPeriod )
11557 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
11558 if ( hasTria != hasQuad ) {
11559 toFixTria = hasTria;
11562 set<int> nbNodesSet;
11563 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11564 while ( fIt->more() && nbNodesSet.size() < 2 )
11565 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
11566 toFixTria = ( *nbNodesSet.begin() == 3 );
11570 // ==================
11571 // Perform shrinking
11572 // ==================
11574 bool shrunk = !movedByPeriod;
11575 int nbBad, shriStep=0, smooStep=0;
11576 _SmoothNode::SmoothType smoothType
11577 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
11578 SMESH_Comment errMsg;
11582 // Move boundary nodes (actually just set new UV)
11583 // -----------------------------------------------
11584 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
11586 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11588 _EdgesOnShape& eos = * subEOS[ iS ];
11589 for ( size_t i = 0; i < eos._edges.size(); ++i )
11591 shrunk |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
11596 // Move nodes on EDGE's
11597 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
11598 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
11599 for ( ; shr != eShri1D.end(); ++shr )
11600 (*shr)->Compute( /*set3D=*/false, helper );
11603 // -----------------
11604 int nbNoImpSteps = 0;
11607 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
11609 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11611 int oldBadNb = nbBad;
11614 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
11615 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
11616 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11618 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
11619 smooTy, /*set3D=*/isConcaveFace);
11621 if ( nbBad < oldBadNb )
11631 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
11632 if ( shriStep > 200 )
11633 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
11634 if ( !errMsg.empty() )
11637 // Fix narrow triangles by swapping diagonals
11638 // ---------------------------------------
11641 set<const SMDS_MeshNode*> usedNodes;
11642 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
11644 // update working data
11645 set<const SMDS_MeshNode*>::iterator n;
11646 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
11648 n = usedNodes.find( nodesToSmooth[ i ]._node );
11649 if ( n != usedNodes.end())
11651 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
11652 nodesToSmooth[ i ]._simplices,
11653 ignoreShapes, NULL,
11654 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
11655 usedNodes.erase( n );
11658 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
11660 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
11661 if ( n != usedNodes.end())
11663 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
11664 lEdges[i]->_simplices,
11666 usedNodes.erase( n );
11670 // TODO: check effect of this additional smooth
11671 // additional laplacian smooth to increase allowed shrink step
11672 // for ( int st = 1; st; --st )
11674 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11675 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11677 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11678 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
11682 } // while ( shrunk )
11684 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
11686 debugMsg( "Re-compute FACE " << f2sd->first << " because " << errMsg );
11689 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
11691 vector< const SMDS_MeshElement* > facesToRm;
11694 facesToRm.reserve( psm->NbElements() );
11695 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
11696 facesToRm.push_back( ite->next() );
11698 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11699 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11702 for ( size_t i = 0; i < facesToRm.size(); ++i )
11703 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
11707 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
11708 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
11709 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11710 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
11711 subEOS[iS]->_edges[i]->_nodes.end() );
11713 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
11714 while ( itn->more() ) {
11715 const SMDS_MeshNode* n = itn->next();
11716 if ( !nodesToKeep.count( n ))
11717 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
11720 _periodicity->ClearPeriodic( F );
11722 // restore position and UV of target nodes
11724 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11725 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11727 _LayerEdge* edge = subEOS[iS]->_edges[i];
11728 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
11729 if ( edge->_pos.empty() ||
11730 edge->Is( _LayerEdge::SHRUNK )) continue;
11731 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
11733 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11734 pos->SetUParameter( edge->_pos[0].X() );
11735 pos->SetVParameter( edge->_pos[0].Y() );
11736 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
11740 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11741 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
11742 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
11744 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11745 dumpMove( tgtNode );
11747 // shrink EDGE sub-meshes and set proxy sub-meshes
11748 UVPtStructVec uvPtVec;
11749 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
11750 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
11752 _Shrinker1D* shr = (*shrIt);
11753 shr->Compute( /*set3D=*/true, helper );
11755 // set proxy mesh of EDGEs w/o layers
11756 map< double, const SMDS_MeshNode* > nodes;
11757 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
11758 // remove refinement nodes
11759 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
11760 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
11761 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
11762 if ( u2n->second == sn0 || u2n->second == sn1 )
11764 while ( u2n->second != tn0 && u2n->second != tn1 )
11766 nodes.erase( nodes.begin(), u2n );
11768 u2n = --nodes.end();
11769 if ( u2n->second == sn0 || u2n->second == sn1 )
11771 while ( u2n->second != tn0 && u2n->second != tn1 )
11773 nodes.erase( ++u2n, nodes.end() );
11775 // set proxy sub-mesh
11776 uvPtVec.resize( nodes.size() );
11777 u2n = nodes.begin();
11778 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
11779 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
11781 uvPtVec[ i ].node = u2n->second;
11782 uvPtVec[ i ].param = u2n->first;
11783 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
11785 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
11786 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11789 // set proxy mesh of EDGEs with layers
11790 vector< _LayerEdge* > edges;
11791 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11793 _EdgesOnShape& eos = * subEOS[ iS ];
11794 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
11795 if ( eos.size() == 0 )
11798 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
11799 data.SortOnEdge( E, eos._edges );
11802 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
11803 if ( !eov->_edges.empty() )
11804 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
11806 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
11808 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
11809 if ( !eov->_edges.empty() )
11810 edges.push_back( eov->_edges[0] ); // on last VERTEX
11812 uvPtVec.resize( edges.size() );
11813 for ( size_t i = 0; i < edges.size(); ++i )
11815 uvPtVec[ i ].node = edges[i]->_nodes.back();
11816 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
11817 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
11819 if ( uvPtVec[ 0 ].node == uvPtVec.back().node && // closed
11820 helper.IsSeamShape( uvPtVec[ 0 ].node->GetShapeID() ))
11822 uvPtVec[ 0 ].SetUV( helper.GetNodeUV( F,
11823 edges[0]->_nodes.back(),
11824 edges[1]->_nodes.back() ));
11825 size_t i = edges.size() - 1;
11826 uvPtVec[ i ].SetUV( helper.GetNodeUV( F,
11827 edges[i ]->_nodes.back(),
11828 edges[i-1]->_nodes.back() ));
11830 // if ( edges.empty() )
11832 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
11833 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
11834 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11836 // temporary clear the FACE sub-mesh from faces made by refine()
11837 vector< const SMDS_MeshElement* > elems;
11838 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
11839 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11840 elems.push_back( ite->next() );
11841 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
11842 elems.push_back( ite->next() );
11845 // compute the mesh on the FACE
11846 TopTools_IndexedMapOfShape allowed(1);
11847 allowed.Add( sm->GetSubShape() );
11848 sm->SetAllowedSubShapes( &allowed );
11849 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
11850 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
11851 sm->SetAllowedSubShapes( nullptr );
11853 // re-fill proxy sub-meshes of the FACE
11854 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11855 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11856 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11857 psm->AddElement( ite->next() );
11860 for ( size_t i = 0; i < elems.size(); ++i )
11861 smDS->AddElement( elems[i] );
11863 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
11864 return error( errMsg );
11866 } // end of re-meshing in case of failed smoothing
11867 else if ( !movedByPeriod )
11869 // No wrongly shaped faces remain; final smooth. Set node XYZ.
11870 bool isStructuredFixed = false;
11871 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
11872 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
11873 if ( !isStructuredFixed )
11875 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
11876 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
11878 for ( int st = 3; st; --st )
11881 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
11882 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
11883 case 3: smoothType = _SmoothNode::ANGULAR; break;
11885 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11886 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11888 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11889 smoothType,/*set3D=*/st==1 );
11894 if ( !getMeshDS()->IsEmbeddedMode() )
11895 // Log node movement
11896 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11898 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
11899 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
11903 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
11904 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
11906 VISCOUS_3D::ToClearSubWithMain( sm, data2->_solid );
11908 } // loop on FACES to shrink mesh on
11911 // Replace source nodes by target nodes in shrunk mesh edges
11913 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
11914 for ( ; e2shr != e2shrMap.end(); ++e2shr )
11915 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
11920 //================================================================================
11922 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
11924 //================================================================================
11926 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
11927 _EdgesOnShape& eos,
11928 SMESH_MesherHelper& helper,
11929 const SMESHDS_SubMesh* /*faceSubMesh*/)
11931 const SMDS_MeshNode* srcNode = edge._nodes[0];
11932 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11934 if ( eos.SWOLType() == TopAbs_FACE )
11936 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
11939 edge.Set( _LayerEdge::SHRUNK );
11940 return srcNode == tgtNode;
11942 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
11943 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
11944 gp_Vec2d uvDir( srcUV, tgtUV );
11945 double uvLen = uvDir.Magnitude();
11947 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
11950 //edge._pos.resize(1);
11951 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
11953 // set UV of source node to target node
11954 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11955 pos->SetUParameter( srcUV.X() );
11956 pos->SetVParameter( srcUV.Y() );
11958 else // _sWOL is TopAbs_EDGE
11960 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
11963 edge.Set( _LayerEdge::SHRUNK );
11964 return srcNode == tgtNode;
11966 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11967 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
11968 if ( !edgeSM || edgeSM->NbElements() == 0 )
11969 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11971 const SMDS_MeshNode* n2 = 0;
11972 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
11973 while ( eIt->more() && !n2 )
11975 const SMDS_MeshElement* e = eIt->next();
11976 if ( !edgeSM->Contains(e)) continue;
11977 n2 = e->GetNode( 0 );
11978 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
11981 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11983 if ( n2 == tgtNode || // for 3D_mesh_GHS3D_01/B1
11984 n2 == edge._nodes[1] ) // bos #20643
11986 // shrunk by other SOLID
11987 edge.Set( _LayerEdge::SHRUNK ); // ???
11991 double uSrc = helper.GetNodeU( E, srcNode, n2 );
11992 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
11993 double u2 = helper.GetNodeU( E, n2, srcNode );
11995 //edge._pos.clear();
11997 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
11999 // tgtNode is located so that it does not make faces with wrong orientation
12000 edge.Set( _LayerEdge::SHRUNK );
12003 //edge._pos.resize(1);
12004 edge._pos[0].SetCoord( U_TGT, uTgt );
12005 edge._pos[0].SetCoord( U_SRC, uSrc );
12006 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
12008 edge._simplices.resize( 1 );
12009 edge._simplices[0]._nPrev = n2;
12011 // set U of source node to the target node
12012 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
12013 pos->SetUParameter( uSrc );
12018 //================================================================================
12020 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
12022 //================================================================================
12024 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
12026 if ( edge._nodes.size() == 1 )
12031 const SMDS_MeshNode* srcNode = edge._nodes[0];
12032 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
12033 if ( S.IsNull() ) return;
12037 switch ( S.ShapeType() )
12042 TopLoc_Location loc;
12043 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
12044 if ( curve.IsNull() ) return;
12045 SMDS_EdgePositionPtr ePos = srcNode->GetPosition();
12046 p = curve->Value( ePos->GetUParameter() );
12049 case TopAbs_VERTEX:
12051 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
12056 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
12057 dumpMove( srcNode );
12061 //================================================================================
12063 * \brief Try to fix triangles with high aspect ratio by swapping diagonals
12065 //================================================================================
12067 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
12068 SMESH_MesherHelper& helper,
12071 set<const SMDS_MeshNode*> * involvedNodes)
12073 SMESH::Controls::AspectRatio qualifier;
12074 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
12075 const double maxAspectRatio = is2D ? 4. : 2;
12076 _NodeCoordHelper xyz( F, helper, is2D );
12078 // find bad triangles
12080 vector< const SMDS_MeshElement* > badTrias;
12081 vector< double > badAspects;
12082 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
12083 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12084 while ( fIt->more() )
12086 const SMDS_MeshElement * f = fIt->next();
12087 if ( f->NbCornerNodes() != 3 ) continue;
12088 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
12089 double aspect = qualifier.GetValue( points );
12090 if ( aspect > maxAspectRatio )
12092 badTrias.push_back( f );
12093 badAspects.push_back( aspect );
12098 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
12099 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12100 while ( fIt->more() )
12102 const SMDS_MeshElement * f = fIt->next();
12103 if ( f->NbCornerNodes() == 3 )
12104 dumpChangeNodes( f );
12108 if ( badTrias.empty() )
12111 // find couples of faces to swap diagonal
12113 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
12114 vector< T2Trias > triaCouples;
12116 TIDSortedElemSet involvedFaces, emptySet;
12117 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
12120 double aspRatio [3];
12123 if ( !involvedFaces.insert( badTrias[iTia] ).second )
12125 for ( int iP = 0; iP < 3; ++iP )
12126 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
12128 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
12129 int bestCouple = -1;
12130 for ( int iSide = 0; iSide < 3; ++iSide )
12132 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
12133 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
12134 trias [iSide].first = badTrias[iTia];
12135 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
12137 if (( ! trias[iSide].second ) ||
12138 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
12139 ( ! sm->Contains( trias[iSide].second )))
12142 // aspect ratio of an adjacent tria
12143 for ( int iP = 0; iP < 3; ++iP )
12144 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
12145 double aspectInit = qualifier.GetValue( points2 );
12147 // arrange nodes as after diag-swaping
12148 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
12149 i3 = helper.WrapIndex( i1-1, 3 );
12151 i3 = helper.WrapIndex( i1+1, 3 );
12153 points1( 1+ iSide ) = points2( 1+ i3 );
12154 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
12156 // aspect ratio after diag-swaping
12157 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
12158 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
12161 // prevent inversion of a triangle
12162 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
12163 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
12164 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
12167 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
12168 bestCouple = iSide;
12171 if ( bestCouple >= 0 )
12173 triaCouples.push_back( trias[bestCouple] );
12174 involvedFaces.insert ( trias[bestCouple].second );
12178 involvedFaces.erase( badTrias[iTia] );
12181 if ( triaCouples.empty() )
12186 SMESH_MeshEditor editor( helper.GetMesh() );
12187 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12188 for ( size_t i = 0; i < triaCouples.size(); ++i )
12190 dumpChangeNodes( triaCouples[i].first );
12191 dumpChangeNodes( triaCouples[i].second );
12192 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
12195 if ( involvedNodes )
12196 for ( size_t i = 0; i < triaCouples.size(); ++i )
12198 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
12199 triaCouples[i].first->end_nodes() );
12200 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
12201 triaCouples[i].second->end_nodes() );
12204 // just for debug dump resulting triangles
12205 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12206 for ( size_t i = 0; i < triaCouples.size(); ++i )
12208 dumpChangeNodes( triaCouples[i].first );
12209 dumpChangeNodes( triaCouples[i].second );
12213 //================================================================================
12215 * \brief Move target node to it's final position on the FACE during shrinking
12217 //================================================================================
12219 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
12220 const TopoDS_Face& F,
12221 _EdgesOnShape& eos,
12222 SMESH_MesherHelper& helper )
12225 return false; // already at the target position
12227 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
12229 if ( eos.SWOLType() == TopAbs_FACE )
12231 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
12232 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
12233 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
12234 const double uvLen = tgtUV.Distance( curUV );
12235 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
12237 // Select shrinking step such that not to make faces with wrong orientation.
12238 double stepSize = 1e100;
12239 for ( size_t i = 0; i < _simplices.size(); ++i )
12241 if ( !_simplices[i]._nPrev->isMarked() ||
12242 !_simplices[i]._nNext->isMarked() )
12243 continue; // simplex of quadrangle created by addBoundaryElements()
12245 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
12246 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev, tgtNode );
12247 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext, tgtNode );
12248 gp_XY dirN = uvN2 - uvN1;
12249 double det = uvDir.Crossed( dirN );
12250 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
12251 gp_XY dirN2Cur = curUV - uvN1;
12252 double step = dirN.Crossed( dirN2Cur ) / det;
12254 stepSize = Min( step, stepSize );
12257 if ( uvLen <= stepSize )
12263 else if ( stepSize > 0 )
12265 newUV = curUV + uvDir.XY() * stepSize * kSafe;
12271 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
12272 pos->SetUParameter( newUV.X() );
12273 pos->SetVParameter( newUV.Y() );
12276 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12277 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12278 dumpMove( tgtNode );
12280 if ( surface.IsNull() ) {}
12283 else // _sWOL is TopAbs_EDGE
12285 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
12286 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
12287 SMDS_EdgePositionPtr tgtPos = tgtNode->GetPosition();
12289 const double u2 = helper.GetNodeU( E, n2, tgtNode );
12290 const double uSrc = _pos[0].Coord( U_SRC );
12291 const double lenTgt = _pos[0].Coord( LEN_TGT );
12293 double newU = _pos[0].Coord( U_TGT );
12294 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
12296 Set( _LayerEdge::SHRUNK );
12301 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
12303 tgtPos->SetUParameter( newU );
12305 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
12306 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12307 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12308 dumpMove( tgtNode );
12315 //================================================================================
12317 * \brief Perform smooth on the FACE
12318 * \retval bool - true if the node has been moved
12320 //================================================================================
12322 bool _SmoothNode::Smooth(int& nbBad,
12323 Handle(Geom_Surface)& surface,
12324 SMESH_MesherHelper& helper,
12325 const double refSign,
12329 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
12331 // get uv of surrounding nodes
12332 vector<gp_XY> uv( _simplices.size() );
12333 for ( size_t i = 0; i < _simplices.size(); ++i )
12334 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
12336 // compute new UV for the node
12337 gp_XY newPos (0,0);
12338 if ( how == TFI && _simplices.size() == 4 )
12341 for ( size_t i = 0; i < _simplices.size(); ++i )
12342 if ( _simplices[i]._nOpp )
12343 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
12345 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
12347 newPos = helper.calcTFI ( 0.5, 0.5,
12348 corners[0], corners[1], corners[2], corners[3],
12349 uv[1], uv[2], uv[3], uv[0] );
12351 else if ( how == ANGULAR )
12353 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
12355 else if ( how == CENTROIDAL && _simplices.size() > 3 )
12357 // average centers of diagonals wieghted with their reciprocal lengths
12358 if ( _simplices.size() == 4 )
12360 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
12361 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
12362 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
12366 double sumWeight = 0;
12367 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
12368 for ( int i = 0; i < nb; ++i )
12371 int iTo = i + _simplices.size() - 1;
12372 for ( int j = iFrom; j < iTo; ++j )
12374 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
12375 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
12377 newPos += w * ( uv[i]+uv[i2] );
12380 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
12385 // Laplacian smooth
12386 for ( size_t i = 0; i < _simplices.size(); ++i )
12388 newPos /= _simplices.size();
12391 // count quality metrics (orientation) of triangles around the node
12392 int nbOkBefore = 0;
12393 gp_XY tgtUV = helper.GetNodeUV( face, _node );
12394 for ( size_t i = 0; i < _simplices.size(); ++i )
12395 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
12398 for ( size_t i = 0; i < _simplices.size(); ++i )
12399 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
12401 if ( nbOkAfter < nbOkBefore )
12403 nbBad += _simplices.size() - nbOkBefore;
12407 SMDS_FacePositionPtr pos = _node->GetPosition();
12408 pos->SetUParameter( newPos.X() );
12409 pos->SetVParameter( newPos.Y() );
12416 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
12417 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
12421 nbBad += _simplices.size() - nbOkAfter;
12422 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
12425 //================================================================================
12427 * \brief Computes new UV using angle based smoothing technique
12429 //================================================================================
12431 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
12432 const gp_XY& uvToFix,
12433 const double refSign)
12435 uv.push_back( uv.front() );
12437 vector< gp_XY > edgeDir ( uv.size() );
12438 vector< double > edgeSize( uv.size() );
12439 for ( size_t i = 1; i < edgeDir.size(); ++i )
12441 edgeDir [i-1] = uv[i] - uv[i-1];
12442 edgeSize[i-1] = edgeDir[i-1].Modulus();
12443 if ( edgeSize[i-1] < numeric_limits<double>::min() )
12444 edgeDir[i-1].SetX( 100 );
12446 edgeDir[i-1] /= edgeSize[i-1] * refSign;
12448 edgeDir.back() = edgeDir.front();
12449 edgeSize.back() = edgeSize.front();
12453 for ( size_t i = 1; i < edgeDir.size(); ++i )
12455 const int i1 = i-1;
12456 if ( edgeDir[i1].X() > 1. ) continue;
12457 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
12458 if ( i == edgeDir.size() ) break;
12460 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
12461 gp_XY norm2( -edgeDir[i ].Y(), edgeDir[i ].X() );
12462 gp_XY bisec = norm1 + norm2;
12463 double bisecSize = bisec.Modulus();
12464 if ( bisecSize < numeric_limits<double>::min() )
12466 bisec = -edgeDir[i1] + edgeDir[i];
12467 bisecSize = bisec.Modulus();
12469 bisec /= bisecSize;
12471 gp_XY dirToN = uvToFix - p;
12472 double distToN = bisec * dirToN;
12473 if ( bisec * dirToN < 0 )
12474 distToN = -distToN;
12476 double wgt = edgeSize[i1] + edgeSize[i];
12477 newPos += ( p + bisec * distToN ) * wgt;
12484 //================================================================================
12486 * \brief Keep a _LayerEdge inflated along the EDGE
12488 //================================================================================
12490 void _Shrinker1D::AddEdge( const _LayerEdge* e,
12491 _EdgesOnShape& eos,
12492 SMESH_MesherHelper& helper )
12495 if ( _nodes.empty() )
12497 _edges[0] = _edges[1] = 0;
12500 // check _LayerEdge
12501 if ( e == _edges[0] || e == _edges[1] || e->_nodes.size() < 2 )
12503 if ( eos.SWOLType() != TopAbs_EDGE )
12504 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12505 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
12506 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12508 // store _LayerEdge
12509 _geomEdge = TopoDS::Edge( eos._sWOL );
12511 BRep_Tool::Range( _geomEdge, f,l );
12512 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
12513 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
12515 // Check if the nodes are already shrunk by another SOLID
12517 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
12518 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
12520 _done = (( tgtNode0 && tgtNode0->NbInverseElements( SMDSAbs_Edge ) == 2 ) ||
12521 ( tgtNode1 && tgtNode1->NbInverseElements( SMDSAbs_Edge ) == 2 ));
12523 _nodes.resize( 1, nullptr );
12527 if ( _nodes.empty() )
12529 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
12530 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
12532 TopLoc_Location loc;
12533 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
12534 GeomAdaptor_Curve aCurve(C, f,l);
12535 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
12537 smIdType nbExpectNodes = eSubMesh->NbNodes();
12538 _initU .reserve( nbExpectNodes );
12539 _normPar.reserve( nbExpectNodes );
12540 _nodes .reserve( nbExpectNodes );
12541 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
12542 while ( nIt->more() )
12544 const SMDS_MeshNode* node = nIt->next();
12546 // skip refinement nodes
12547 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
12548 node == tgtNode0 || node == tgtNode1 )
12550 bool hasMarkedFace = false;
12551 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
12552 while ( fIt->more() && !hasMarkedFace )
12553 hasMarkedFace = fIt->next()->isMarked();
12554 if ( !hasMarkedFace )
12557 _nodes.push_back( node );
12558 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
12559 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
12560 _normPar.push_back( len / totLen );
12565 // remove target node of the _LayerEdge from _nodes
12566 size_t nbFound = 0;
12567 for ( size_t i = 0; i < _nodes.size(); ++i )
12568 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
12569 _nodes[i] = 0, nbFound++;
12570 if ( nbFound == _nodes.size() )
12575 //================================================================================
12577 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
12579 //================================================================================
12581 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
12583 if ( _done || _nodes.empty())
12585 const _LayerEdge* e = _edges[0];
12586 if ( !e ) e = _edges[1];
12589 _done = (( !_edges[0] || _edges[0]->Is( _LayerEdge::SHRUNK )) &&
12590 ( !_edges[1] || _edges[1]->Is( _LayerEdge::SHRUNK )));
12593 if ( set3D || _done )
12595 dumpFunction(SMESH_Comment("shrink1D_E") << helper.GetMeshDS()->ShapeToIndex( _geomEdge )<<
12596 "_F" << helper.GetSubShapeID() );
12597 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
12598 GeomAdaptor_Curve aCurve(C, f,l);
12601 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12603 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12604 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
12606 for ( size_t i = 0; i < _nodes.size(); ++i )
12608 if ( !_nodes[i] ) continue;
12609 double len = totLen * _normPar[i];
12610 GCPnts_AbscissaPoint discret( aCurve, len, f );
12611 if ( !discret.IsDone() )
12612 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
12613 double u = discret.Parameter();
12614 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12615 pos->SetUParameter( u );
12616 gp_Pnt p = C->Value( u );
12617 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
12618 dumpMove( _nodes[i] );
12624 BRep_Tool::Range( _geomEdge, f,l );
12626 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12628 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12630 for ( size_t i = 0; i < _nodes.size(); ++i )
12632 if ( !_nodes[i] ) continue;
12633 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
12634 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12635 pos->SetUParameter( u );
12640 //================================================================================
12642 * \brief Restore initial parameters of nodes on EDGE
12644 //================================================================================
12646 void _Shrinker1D::RestoreParams()
12649 for ( size_t i = 0; i < _nodes.size(); ++i )
12651 if ( !_nodes[i] ) continue;
12652 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12653 pos->SetUParameter( _initU[i] );
12658 //================================================================================
12660 * \brief Replace source nodes by target nodes in shrunk mesh edges
12662 //================================================================================
12664 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
12666 const SMDS_MeshNode* nodes[3];
12667 for ( int i = 0; i < 2; ++i )
12669 if ( !_edges[i] ) continue;
12671 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
12672 if ( !eSubMesh ) return;
12673 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
12674 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
12675 const SMDS_MeshNode* scdNode = _edges[i]->_nodes[1];
12676 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
12677 while ( eIt->more() )
12679 const SMDS_MeshElement* e = eIt->next();
12680 if ( !eSubMesh->Contains( e ) || e->GetNodeIndex( scdNode ) >= 0 )
12682 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
12683 for ( int iN = 0; iN < e->NbNodes(); ++iN )
12685 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
12686 nodes[iN] = ( n == srcNode ? tgtNode : n );
12688 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
12693 //================================================================================
12695 * \brief Setup quadPoints
12697 //================================================================================
12699 _Mapper2D::_Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap )
12701 size_t i, iSize = _quadPoints.iSize = param2ColumnMap.size();
12702 size_t j, jSize = _quadPoints.jSize = param2ColumnMap.begin()->second.size();
12703 if ( _quadPoints.iSize < 3 ||
12704 _quadPoints.jSize < 3 )
12706 _quadPoints.uv_grid.resize( iSize * jSize );
12710 for ( auto & u_columnNodes : param2ColumnMap )
12712 for ( j = 0; j < u_columnNodes.second.size(); ++j )
12713 _quadPoints.UVPt( i, j ).node = u_columnNodes.second[ j ];
12717 // compute x parameter on borders
12718 uvPnt( 0, 0 ).x = 0;
12719 uvPnt( 0, jSize-1 ).x = 0;
12720 gp_Pnt p0, pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12721 gp_Pnt p1, pPrev1 = SMESH_NodeXYZ( uvPnt( 0, jSize-1 ).node );
12722 for ( i = 1; i < iSize; ++i )
12724 p0 = SMESH_NodeXYZ( uvPnt( i, 0 ).node );
12725 p1 = SMESH_NodeXYZ( uvPnt( i, jSize-1 ).node );
12726 uvPnt( i, 0 ).x = uvPnt( i-1, 0 ).x + p0.Distance( pPrev0 );
12727 uvPnt( i, jSize-1 ).x = uvPnt( i-1, jSize-1 ).x + p1.Distance( pPrev1 );
12731 for ( i = 1; i < iSize-1; ++i )
12733 uvPnt( i, 0 ).x /= uvPnt( iSize-1, 0 ).x;
12734 uvPnt( i, jSize-1 ).x /= uvPnt( iSize-1, jSize-1 ).x;
12735 uvPnt( i, 0 ).y = 0;
12736 uvPnt( i, jSize-1 ).y = 1;
12739 // compute y parameter on borders
12740 uvPnt( 0, 0 ).y = 0;
12741 uvPnt( iSize-1, 0 ).y = 0;
12742 pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12743 pPrev1 = SMESH_NodeXYZ( uvPnt( iSize-1, 0 ).node );
12744 for ( j = 1; j < jSize; ++j )
12746 p0 = SMESH_NodeXYZ( uvPnt( 0, j ).node );
12747 p1 = SMESH_NodeXYZ( uvPnt( iSize-1, j ).node );
12748 uvPnt( 0, j ).y = uvPnt( 0, j-1 ).y + p0.Distance( pPrev0 );
12749 uvPnt( iSize-1, j ).y = uvPnt( iSize-1, j-1 ).y + p1.Distance( pPrev1 );
12753 for ( j = 1; j < jSize-1; ++j )
12755 uvPnt( 0, j ).y /= uvPnt( 0, jSize-1 ).y;
12756 uvPnt( iSize-1, j ).y /= uvPnt( iSize-1, jSize-1 ).y;
12757 uvPnt( 0, j ).x = 0;
12758 uvPnt( iSize-1, j ).x = 1;
12761 // compute xy of internal nodes
12762 for ( i = 1; i < iSize-1; ++i )
12764 const double x0 = uvPnt( i, 0 ).x;
12765 const double x1 = uvPnt( i, jSize-1 ).x;
12766 for ( j = 1; j < jSize-1; ++j )
12768 const double y0 = uvPnt( 0, j ).y;
12769 const double y1 = uvPnt( iSize-1, j ).y;
12770 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
12771 double y = y0 + x * (y1 - y0);
12772 uvPnt( i, j ).x = x;
12773 uvPnt( i, j ).y = y;
12777 // replace base nodes with target ones
12778 for ( i = 0; i < iSize; ++i )
12779 for ( j = 0; j < jSize; ++j )
12781 auto n2e = n2eMap.find( uvPnt( i, j ).node );
12782 uvPnt( i, j ).node = n2e->second->_nodes.back();
12788 //================================================================================
12790 * \brief Compute positions of nodes of 2D structured mesh using TFI
12792 //================================================================================
12794 bool _Mapper2D::ComputeNodePositions()
12796 if ( _quadPoints.uv_grid.empty() )
12799 size_t i, iSize = _quadPoints.iSize;
12800 size_t j, jSize = _quadPoints.jSize;
12802 SMESH_NodeXYZ a0 ( uvPnt( 0, 0 ).node );
12803 SMESH_NodeXYZ a1 ( uvPnt( iSize-1, 0 ).node );
12804 SMESH_NodeXYZ a2 ( uvPnt( iSize-1, jSize-1 ).node );
12805 SMESH_NodeXYZ a3 ( uvPnt( 0, jSize-1 ).node );
12807 for ( i = 1; i < iSize-1; ++i )
12809 SMESH_NodeXYZ p0 ( uvPnt( i, 0 ).node );
12810 SMESH_NodeXYZ p2 ( uvPnt( i, jSize-1 ).node );
12811 for ( j = 1; j < jSize-1; ++j )
12813 SMESH_NodeXYZ p1 ( uvPnt( iSize-1, j ).node );
12814 SMESH_NodeXYZ p3 ( uvPnt( 0, j ).node );
12815 double x = uvPnt( i, j ).x;
12816 double y = uvPnt( i, j ).y;
12818 gp_XYZ p = SMESH_MesherHelper::calcTFI( x, y, a0,a1,a2,a3, p0,p1,p2,p3 );
12819 const_cast< SMDS_MeshNode* >( uvPnt( i, j ).node )->setXYZ( p.X(), p.Y(), p.Z() );
12821 dumpMove( uvPnt( i, j ).node );
12827 //================================================================================
12829 * \brief Creates 2D and 1D elements on boundaries of new prisms
12831 //================================================================================
12833 bool _ViscousBuilder::addBoundaryElements(_SolidData& data)
12835 SMESH_MesherHelper helper( *_mesh );
12837 vector< const SMDS_MeshNode* > faceNodes;
12839 //for ( size_t i = 0; i < _sdVec.size(); ++i )
12841 //_SolidData& data = _sdVec[i];
12842 TopTools_IndexedMapOfShape geomEdges;
12843 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
12844 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
12846 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
12847 const TGeomID edgeID = getMeshDS()->ShapeToIndex( E );
12848 if ( data._noShrinkShapes.count( edgeID ))
12851 // Get _LayerEdge's based on E
12853 map< double, const SMDS_MeshNode* > u2nodes;
12854 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
12857 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
12858 TNode2Edge & n2eMap = data._n2eMap;
12859 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
12861 //check if 2D elements are needed on E
12862 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
12863 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
12864 ledges.push_back( n2e->second );
12866 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
12867 continue; // no layers on E
12868 ledges.push_back( n2eMap[ u2n->second ]);
12870 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
12871 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
12872 int nbSharedPyram = 0;
12873 SMDS_ElemIteratorPtr vIt = tgtN1->GetInverseElementIterator(SMDSAbs_Volume);
12874 while ( vIt->more() )
12876 const SMDS_MeshElement* v = vIt->next();
12877 nbSharedPyram += int( v->GetNodeIndex( tgtN0 ) >= 0 );
12879 if ( nbSharedPyram > 1 )
12880 continue; // not free border of the pyramid
12883 faceNodes.push_back( ledges[0]->_nodes[0] );
12884 faceNodes.push_back( ledges[1]->_nodes[0] );
12885 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
12886 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
12888 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
12889 continue; // faces already created
12891 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
12892 ledges.push_back( n2eMap[ u2n->second ]);
12894 // Find out orientation and type of face to create
12896 bool reverse = false, isOnFace;
12899 map< TGeomID, TopoDS_Shape >::iterator e2f = data._shrinkShape2Shape.find( edgeID );
12900 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
12902 F = e2f->second.Oriented( TopAbs_FORWARD );
12903 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
12904 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
12905 reverse = !reverse, F.Reverse();
12906 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
12907 reverse = !reverse;
12909 else if ( !data._ignoreFaceIds.count( e2f->first ))
12911 // find FACE with layers sharing E
12912 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE, &data._solid );
12914 F = *( fIt->next() );
12916 // Find the sub-mesh to add new faces
12917 SMESHDS_SubMesh* sm = 0;
12919 sm = getMeshDS()->MeshElements( F );
12921 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
12923 return error("error in addBoundaryElements()", data._index);
12925 // Find a proxy sub-mesh of the FACE of an adjacent SOLID, which will use the new boundary
12926 // faces for 3D meshing (PAL23414)
12927 SMESHDS_SubMesh* adjSM = 0;
12930 const TGeomID faceID = sm->GetID();
12931 PShapeIteratorPtr soIt = helper.GetAncestors( F, *_mesh, TopAbs_SOLID );
12932 while ( const TopoDS_Shape* solid = soIt->next() )
12933 if ( !solid->IsSame( data._solid ))
12935 size_t iData = _solids.FindIndex( *solid ) - 1;
12936 if ( iData < _sdVec.size() &&
12937 _sdVec[ iData ]._ignoreFaceIds.count( faceID ) &&
12938 _sdVec[ iData ]._shrinkShape2Shape.count( edgeID ) == 0 )
12940 SMESH_ProxyMesh::SubMesh* proxySub =
12941 _sdVec[ iData ]._proxyMesh->getFaceSubM( TopoDS::Face( F ), /*create=*/false);
12942 if ( proxySub && proxySub->NbElements() > 0 )
12949 const int dj1 = reverse ? 0 : 1;
12950 const int dj2 = reverse ? 1 : 0;
12951 vector< const SMDS_MeshElement*> ff; // new faces row
12952 SMESHDS_Mesh* m = getMeshDS();
12953 for ( size_t j = 1; j < ledges.size(); ++j )
12955 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
12956 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
12957 ff.resize( std::max( nn1.size(), nn2.size() ), NULL );
12958 if ( nn1.size() == nn2.size() )
12961 for ( size_t z = 1; z < nn1.size(); ++z )
12962 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12964 for ( size_t z = 1; z < nn1.size(); ++z )
12965 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12967 else if ( nn1.size() == 1 )
12970 for ( size_t z = 1; z < nn2.size(); ++z )
12971 sm->AddElement( ff[z-1] = m->AddFace( nn1[0], nn2[z-1], nn2[z] ));
12973 for ( size_t z = 1; z < nn2.size(); ++z )
12974 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
12979 for ( size_t z = 1; z < nn1.size(); ++z )
12980 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[0], nn1[z] ));
12982 for ( size_t z = 1; z < nn1.size(); ++z )
12983 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
12986 if ( adjSM ) // add faces to a proxy SM of the adjacent SOLID
12988 for ( size_t z = 0; z < ff.size(); ++z )
12990 adjSM->AddElement( ff[ z ]);
12996 for ( int isFirst = 0; isFirst < 2; ++isFirst )
12998 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
12999 _EdgesOnShape* eos = data.GetShapeEdges( edge );
13000 if ( eos && eos->SWOLType() == TopAbs_EDGE )
13002 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
13003 if ( nn.size() < 2 || nn[1]->NbInverseElements( SMDSAbs_Edge ) >= 2 )
13005 helper.SetSubShape( eos->_sWOL );
13006 helper.SetElementsOnShape( true );
13007 for ( size_t z = 1; z < nn.size(); ++z )
13008 helper.AddEdge( nn[z-1], nn[z] );
13012 } // loop on EDGE's
13013 } // loop on _SolidData's