1 // Copyright (C) 2007-2024 CEA, EDF, 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 return StdMeshers_ViscousLayers::Get1stLayerThickness( T, f, N );
648 bool UseSurfaceNormal() const
649 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
650 bool ToSmooth() const
651 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
652 bool IsOffsetMethod() const
653 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
655 bool operator==( const AverageHyp& other ) const
657 return ( _nbLayers == other._nbLayers &&
658 _method == other._method &&
659 Equals( GetTotalThickness(), other.GetTotalThickness() ) &&
660 Equals( GetStretchFactor(), other.GetStretchFactor() ));
662 static bool Equals( double v1, double v2 ) { return Abs( v1 - v2 ) < 0.01 * ( v1 + v2 ); }
665 int _nbLayers, _nbHyps, _method;
666 double _thickness, _stretchFactor;
667 std::string _groupName;
670 //--------------------------------------------------------------------------------
672 * \brief _LayerEdge's on a shape and other shape data
676 vector< _LayerEdge* > _edges;
680 SMESH_subMesh * _subMesh;
681 // face or edge w/o layer along or near which _edges are inflated
683 bool _isRegularSWOL; // w/o singularities
684 // averaged StdMeshers_ViscousLayers parameters
687 _Smoother1D* _edgeSmoother;
688 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
689 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
691 typedef std::unordered_map< const SMDS_MeshElement*, gp_XYZ > TFace2NormMap;
692 TFace2NormMap _faceNormals; // if _shape is FACE
693 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
695 Handle(ShapeAnalysis_Surface) _offsetSurf;
696 _LayerEdge* _edgeForOffset;
698 _Mapper2D* _mapper2D;
700 _SolidData* _data; // parent SOLID
702 _LayerEdge* operator[](size_t i) const { return (_LayerEdge*) _edges[i]; }
703 size_t size() const { return _edges.size(); }
704 TopAbs_ShapeEnum ShapeType() const
705 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
706 TopAbs_ShapeEnum SWOLType() const
707 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
708 bool HasC1( const _EdgesOnShape* other ) const
709 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
710 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
711 _SolidData& GetData() const { return *_data; }
712 char ShapeTypeLetter() const
713 { switch ( ShapeType() ) { case TopAbs_FACE: return 'F'; case TopAbs_EDGE: return 'E';
714 case TopAbs_VERTEX: return 'V'; default: return 'S'; }}
716 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0), _mapper2D(0) {}
720 //--------------------------------------------------------------------------------
722 * \brief Convex FACE whose radius of curvature is less than the thickness of
723 * layers. It is used to detect distortion of prisms based on a convex
724 * FACE and to update normals to enable further increasing the thickness
730 // edges whose _simplices are used to detect prism distortion
731 vector< _LayerEdge* > _simplexTestEdges;
733 // map a sub-shape to _SolidData::_edgesOnShape
734 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
738 bool _normalsFixedOnBorders; // used in putOnOffsetSurface()
740 double GetMaxCurvature( _SolidData& data,
742 BRepLProp_SLProps& surfProp,
743 SMESH_MesherHelper& helper);
745 bool GetCenterOfCurvature( _LayerEdge* ledge,
746 BRepLProp_SLProps& surfProp,
747 SMESH_MesherHelper& helper,
748 gp_Pnt & center ) const;
749 bool CheckPrisms() const;
752 //--------------------------------------------------------------------------------
754 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
755 * at inflation up to the full thickness. A detected collision
756 * is fixed in updateNormals()
758 struct _CollisionEdges
761 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
762 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
763 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
766 //--------------------------------------------------------------------------------
768 * \brief Data of a SOLID
772 typedef const StdMeshers_ViscousLayers* THyp;
774 TopTools_MapOfShape _before; // SOLIDs to be computed before _solid
775 TGeomID _index; // SOLID id
776 _MeshOfSolid* _proxyMesh;
779 list< TopoDS_Shape > _hypShapes;
780 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
781 set< TGeomID > _reversedFaceIds;
782 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
784 double _stepSize, _stepSizeCoeff, _geomSize;
785 const SMDS_MeshNode* _stepSizeNodes[2];
787 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
789 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
790 map< TGeomID, TNode2Edge* > _s2neMap;
791 // _LayerEdge's with underlying shapes
792 vector< _EdgesOnShape > _edgesOnShape;
794 // key: an ID of shape (EDGE or VERTEX) shared by a FACE with
795 // layers and a FACE w/o layers
796 // value: the shape (FACE or EDGE) to shrink mesh on.
797 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
798 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
800 // Convex FACEs whose radius of curvature is less than the thickness of layers
801 map< TGeomID, _ConvexFace > _convexFaces;
803 // shapes (EDGEs and VERTEXes) shrink from which is forbidden due to collisions with
804 // the adjacent SOLID
805 set< TGeomID > _noShrinkShapes;
807 int _nbShapesToSmooth;
809 vector< _CollisionEdges > _collisionEdges;
810 set< TGeomID > _concaveFaces;
812 double _maxThickness; // of all _hyps
813 double _minThickness; // of all _hyps
815 double _epsilon; // precision for SegTriaInter()
817 SMESH_MesherHelper* _helper;
819 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
821 :_solid(s), _proxyMesh(m), _done(false),_helper(0) {}
822 ~_SolidData() { delete _helper; _helper = 0; }
824 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
825 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
827 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
828 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
829 return id2face == _convexFaces.end() ? 0 : & id2face->second;
831 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
832 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
833 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
834 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
836 SMESH_MesherHelper& GetHelper() const { return *_helper; }
838 void UnmarkEdges( int flag = _LayerEdge::MARKED ) {
839 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
840 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
841 _edgesOnShape[i]._edges[j]->Unset( flag );
843 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
844 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
846 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
848 //--------------------------------------------------------------------------------
850 * \brief Offset plane used in getNormalByOffset()
856 int _faceIndexNext[2];
857 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
860 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
862 void ComputeIntersectionLine( _OffsetPlane& pln,
863 const TopoDS_Edge& E,
864 const TopoDS_Vertex& V );
865 gp_XYZ GetCommonPoint(bool& isFound, const TopoDS_Vertex& V) const;
866 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
868 //--------------------------------------------------------------------------------
870 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
872 struct _CentralCurveOnEdge
875 vector< gp_Pnt > _curvaCenters;
876 vector< _LayerEdge* > _ledges;
877 vector< gp_XYZ > _normals; // new normal for each of _ledges
878 vector< double > _segLength2;
881 TopoDS_Face _adjFace;
882 bool _adjFaceToSmooth;
884 void Append( const gp_Pnt& center, _LayerEdge* ledge )
886 if ( ledge->Is( _LayerEdge::MULTI_NORMAL ))
888 if ( _curvaCenters.size() > 0 )
889 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
890 _curvaCenters.push_back( center );
891 _ledges.push_back( ledge );
892 _normals.push_back( ledge->_normal );
894 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
895 void SetShapes( const TopoDS_Edge& edge,
896 const _ConvexFace& convFace,
898 SMESH_MesherHelper& helper);
900 //--------------------------------------------------------------------------------
902 * \brief Data of node on a shrinked FACE
906 const SMDS_MeshNode* _node;
907 vector<_Simplex> _simplices; // for quality check
909 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
911 bool Smooth(int& badNb,
912 Handle(Geom_Surface)& surface,
913 SMESH_MesherHelper& helper,
914 const double refSign,
918 gp_XY computeAngularPos(vector<gp_XY>& uv,
919 const gp_XY& uvToFix,
920 const double refSign );
924 //--------------------------------------------------------------------------------
926 * \brief Builder of viscous layers
928 class _ViscousBuilder
933 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
934 const TopoDS_Shape& shape);
935 // check validity of hypotheses
936 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
937 const TopoDS_Shape& shape );
939 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
940 void RestoreListeners();
942 // computes SMESH_ProxyMesh::SubMesh::_n2n;
943 bool MakeN2NMap( _MeshOfSolid* pm );
947 bool findSolidsWithLayers(const bool checkFaceMesh=true);
948 bool setBefore( _SolidData& solidBefore, _SolidData& solidAfter );
949 bool findFacesWithLayers(const bool onlyWith=false);
950 void findPeriodicFaces();
951 void getIgnoreFaces(const TopoDS_Shape& solid,
952 const StdMeshers_ViscousLayers* hyp,
953 const TopoDS_Shape& hypShape,
954 set<TGeomID>& ignoreFaces);
955 int makeEdgesOnShape();
956 bool makeLayer(_SolidData& data);
957 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
958 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
959 SMESH_MesherHelper& helper, _SolidData& data);
960 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
961 const TopoDS_Face& face,
962 SMESH_MesherHelper& helper,
964 bool shiftInside=false);
965 bool getFaceNormalAtSingularity(const gp_XY& uv,
966 const TopoDS_Face& face,
967 SMESH_MesherHelper& helper,
969 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
970 gp_XYZ getNormalByOffset( _LayerEdge* edge,
971 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
973 bool lastNoOffset = false);
974 bool findNeiborsOnEdge(const _LayerEdge* edge,
975 const SMDS_MeshNode*& n1,
976 const SMDS_MeshNode*& n2,
979 void findSimplexTestEdges( _SolidData& data,
980 vector< vector<_LayerEdge*> >& edgesByGeom);
981 void computeGeomSize( _SolidData& data );
982 bool findShapesToSmooth( _SolidData& data);
983 void limitStepSizeByCurvature( _SolidData& data );
984 void limitStepSize( _SolidData& data,
985 const SMDS_MeshElement* face,
986 const _LayerEdge* maxCosinEdge );
987 void limitStepSize( _SolidData& data, const double minSize);
988 bool inflate(_SolidData& data);
989 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
990 int invalidateBadSmooth( _SolidData& data,
991 SMESH_MesherHelper& helper,
992 vector< _LayerEdge* >& badSmooEdges,
993 vector< _EdgesOnShape* >& eosC1,
995 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
996 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep,
997 vector< _EdgesOnShape* >& eosC1,
998 int smooStep=0, int moveAll=false );
999 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
1000 void findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
1002 SMESH_MesherHelper& helper );
1003 void limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper );
1004 void limitMaxLenByCurvature( _LayerEdge* e1, _LayerEdge* e2,
1005 _EdgesOnShape& eos1, _EdgesOnShape& eos2,
1006 const bool isSmoothable );
1007 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
1008 bool updateNormalsOfConvexFaces( _SolidData& data,
1009 SMESH_MesherHelper& helper,
1011 void updateNormalsOfC1Vertices( _SolidData& data );
1012 bool updateNormalsOfSmoothed( _SolidData& data,
1013 SMESH_MesherHelper& helper,
1015 const double stepSize );
1016 bool isNewNormalOk( _SolidData& data,
1018 const gp_XYZ& newNormal);
1019 bool refine(_SolidData& data);
1020 bool shrink(_SolidData& data);
1021 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
1022 SMESH_MesherHelper& helper,
1023 const SMESHDS_SubMesh* faceSubMesh );
1024 void restoreNoShrink( _LayerEdge& edge ) const;
1025 void fixBadFaces(const TopoDS_Face& F,
1026 SMESH_MesherHelper& helper,
1029 set<const SMDS_MeshNode*> * involvedNodes=NULL);
1030 bool addBoundaryElements(_SolidData& data);
1032 bool error( const string& text, int solidID=-1 );
1033 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
1036 void makeGroupOfLE();
1039 SMESH_ComputeErrorPtr _error;
1041 vector< _SolidData > _sdVec;
1042 TopTools_IndexedMapOfShape _solids; // to find _SolidData by a solid
1043 TopTools_MapOfShape _shrunkFaces;
1044 std::unique_ptr<Periodicity> _periodicity;
1049 //--------------------------------------------------------------------------------
1051 * \brief Shrinker of nodes on the EDGE
1055 TopoDS_Edge _geomEdge;
1056 vector<double> _initU;
1057 vector<double> _normPar;
1058 vector<const SMDS_MeshNode*> _nodes;
1059 const _LayerEdge* _edges[2];
1062 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
1063 void Compute(bool set3D, SMESH_MesherHelper& helper);
1064 void RestoreParams();
1065 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
1066 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
1067 const SMDS_MeshNode* TgtNode( bool is2nd ) const
1068 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
1069 const SMDS_MeshNode* SrcNode( bool is2nd ) const
1070 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
1072 //--------------------------------------------------------------------------------
1074 * \brief Smoother of _LayerEdge's on EDGE.
1078 struct OffPnt // point of the offsetted EDGE
1080 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1081 double _len; // length reached at previous inflation step
1082 double _param; // on EDGE
1083 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1084 gp_XYZ _edgeDir;// EDGE tangent at _param
1085 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1087 vector< OffPnt > _offPoints;
1088 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1089 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1090 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1091 gp_XYZ _edgeDir[2]; // tangent at VERTEXes
1092 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1093 _EdgesOnShape& _eos;
1094 double _curveLen; // length of the EDGE
1095 std::pair<int,int> _eToSmooth[2]; // <from,to> indices of _LayerEdge's in _eos
1097 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1099 SMESH_MesherHelper& helper);
1101 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1102 _EdgesOnShape& eos )
1103 : _anaCurve( curveForSmooth ), _eos( eos )
1106 bool Perform(_SolidData& data,
1107 Handle(ShapeAnalysis_Surface)& surface,
1108 const TopoDS_Face& F,
1109 SMESH_MesherHelper& helper );
1111 void prepare(_SolidData& data );
1113 void findEdgesToSmooth();
1115 bool isToSmooth( int iE );
1117 bool smoothAnalyticEdge( _SolidData& data,
1118 Handle(ShapeAnalysis_Surface)& surface,
1119 const TopoDS_Face& F,
1120 SMESH_MesherHelper& helper);
1121 bool smoothComplexEdge( _SolidData& data,
1122 Handle(ShapeAnalysis_Surface)& surface,
1123 const TopoDS_Face& F,
1124 SMESH_MesherHelper& helper);
1125 gp_XYZ getNormalNormal( const gp_XYZ & normal,
1126 const gp_XYZ& edgeDir);
1127 _LayerEdge* getLEdgeOnV( bool is2nd )
1129 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1131 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1133 void offPointsToPython() const; // debug
1136 //--------------------------------------------------------------------------------
1138 * \brief Compute positions of nodes of 2D structured mesh using TFI
1142 FaceQuadStruct _quadPoints;
1144 UVPtStruct& uvPnt( size_t i, size_t j ) { return _quadPoints.UVPt( i, j ); }
1147 _Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap );
1148 bool ComputeNodePositions();
1151 //--------------------------------------------------------------------------------
1153 * \brief Class of temporary mesh face.
1154 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1155 * needed because SMESH_ElementSearcher internally uses set of elements sorted by ID
1157 struct _TmpMeshFace : public SMDS_PolygonalFaceOfNodes
1159 const SMDS_MeshElement* _srcFace;
1161 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1164 const SMDS_MeshElement* srcFace=0 ):
1165 SMDS_PolygonalFaceOfNodes(nodes), _srcFace( srcFace ) { setID( ID ); setShapeID( faceID ); }
1166 virtual SMDSAbs_EntityType GetEntityType() const
1167 { return _srcFace ? _srcFace->GetEntityType() : SMDSEntity_Quadrangle; }
1168 virtual SMDSAbs_GeometryType GetGeomType() const
1169 { return _srcFace ? _srcFace->GetGeomType() : SMDSGeom_QUADRANGLE; }
1171 //--------------------------------------------------------------------------------
1173 * \brief Class of temporary mesh quadrangle face storing _LayerEdge it's based on
1175 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1177 _LayerEdge *_le1, *_le2;
1178 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1179 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1181 myNodes[0]=_le1->_nodes[0];
1182 myNodes[1]=_le1->_nodes.back();
1183 myNodes[2]=_le2->_nodes.back();
1184 myNodes[3]=_le2->_nodes[0];
1186 const SMDS_MeshNode* n( size_t i ) const
1188 return myNodes[ i ];
1190 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1192 SMESH_TNodeXYZ p0s( myNodes[0] );
1193 SMESH_TNodeXYZ p0t( myNodes[1] );
1194 SMESH_TNodeXYZ p1t( myNodes[2] );
1195 SMESH_TNodeXYZ p1s( myNodes[3] );
1196 gp_XYZ v0 = p0t - p0s;
1197 gp_XYZ v1 = p1t - p1s;
1198 gp_XYZ v01 = p1s - p0s;
1199 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1204 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1206 myNodes[0]=le1->_nodes[0];
1207 myNodes[1]=le1->_nodes.back();
1208 myNodes[2]=le2->_nodes.back();
1209 myNodes[3]=le2->_nodes[0];
1213 //--------------------------------------------------------------------------------
1215 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1216 * \warning Location of a surface is ignored
1218 struct _NodeCoordHelper
1220 SMESH_MesherHelper& _helper;
1221 const TopoDS_Face& _face;
1222 Handle(Geom_Surface) _surface;
1223 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1225 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1226 : _helper( helper ), _face( F )
1230 TopLoc_Location loc;
1231 _surface = BRep_Tool::Surface( _face, loc );
1233 if ( _surface.IsNull() )
1234 _fun = & _NodeCoordHelper::direct;
1236 _fun = & _NodeCoordHelper::byUV;
1238 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1241 gp_XYZ direct(const SMDS_MeshNode* n) const
1243 return SMESH_TNodeXYZ( n );
1245 gp_XYZ byUV (const SMDS_MeshNode* n) const
1247 gp_XY uv = _helper.GetNodeUV( _face, n );
1248 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1252 //================================================================================
1254 * \brief Check angle between vectors
1256 //================================================================================
1258 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1260 double dot = v1 * v2; // cos * |v1| * |v2|
1261 double l1 = v1.SquareMagnitude();
1262 double l2 = v2.SquareMagnitude();
1263 return (( dot * cos >= 0 ) &&
1264 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1269 ObjectPool< _LayerEdge > _edgePool;
1270 ObjectPool< _Curvature > _curvaturePool;
1271 ObjectPool< _2NearEdges > _nearEdgesPool;
1273 static _Factory* & me()
1275 static _Factory* theFactory = 0;
1280 _Factory() { me() = this; }
1281 ~_Factory() { me() = 0; }
1283 static _LayerEdge* NewLayerEdge() { return me()->_edgePool.getNew(); }
1284 static _Curvature * NewCurvature() { return me()->_curvaturePool.getNew(); }
1285 static _2NearEdges* NewNearEdges() { return me()->_nearEdgesPool.getNew(); }
1288 } // namespace VISCOUS_3D
1292 //================================================================================
1293 // StdMeshers_ViscousLayers hypothesis
1295 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, SMESH_Gen* gen)
1296 :SMESH_Hypothesis(hypId, gen),
1297 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1298 _method( SURF_OFFSET_SMOOTH ),
1301 _name = StdMeshers_ViscousLayers::GetHypType();
1302 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1303 } // --------------------------------------------------------------------------------
1304 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1306 if ( faceIds != _shapeIds )
1307 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1308 if ( _isToIgnoreShapes != toIgnore )
1309 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1310 } // --------------------------------------------------------------------------------
1311 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1313 if ( thickness != _thickness )
1314 _thickness = thickness, NotifySubMeshesHypothesisModification();
1315 } // --------------------------------------------------------------------------------
1316 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1318 if ( _nbLayers != nb )
1319 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1320 } // --------------------------------------------------------------------------------
1321 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1323 if ( _stretchFactor != factor )
1324 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1325 } // --------------------------------------------------------------------------------
1326 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1328 if ( _method != method )
1329 _method = method, NotifySubMeshesHypothesisModification();
1330 } // --------------------------------------------------------------------------------
1331 void StdMeshers_ViscousLayers::SetGroupName(const std::string& name)
1333 if ( _groupName != name )
1336 if ( !_groupName.empty() )
1337 NotifySubMeshesHypothesisModification();
1339 } // --------------------------------------------------------------------------------
1340 SMESH_ProxyMesh::Ptr
1341 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1342 const TopoDS_Shape& theShape,
1343 const bool toMakeN2NMap) const
1345 using namespace VISCOUS_3D;
1346 _ViscousBuilder builder;
1347 SMESH_ComputeErrorPtr err = builder.Compute( theMesh, theShape );
1348 if ( err && !err->IsOK() )
1349 return SMESH_ProxyMesh::Ptr();
1351 vector<SMESH_ProxyMesh::Ptr> components;
1352 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1353 for ( ; exp.More(); exp.Next() )
1355 if ( _MeshOfSolid* pm =
1356 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1358 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1359 if ( !builder.MakeN2NMap( pm ))
1360 return SMESH_ProxyMesh::Ptr();
1361 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1362 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1364 if ( pm->_warning && !pm->_warning->IsOK() )
1366 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1367 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1368 if ( !smError || smError->IsOK() )
1369 smError = pm->_warning;
1372 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1374 switch ( components.size() )
1378 case 1: return components[0];
1380 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1382 return SMESH_ProxyMesh::Ptr();
1383 } // --------------------------------------------------------------------------------
1384 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1386 save << " " << _nbLayers
1387 << " " << _thickness
1388 << " " << _stretchFactor
1389 << " " << _shapeIds.size();
1390 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1391 save << " " << _shapeIds[i];
1392 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1393 save << " " << _method;
1394 save << " " << _groupName.size();
1395 if ( !_groupName.empty() )
1396 save << " " << _groupName;
1398 } // --------------------------------------------------------------------------------
1399 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1401 int nbFaces, faceID, shapeToTreat, method;
1402 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1403 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1404 _shapeIds.push_back( faceID );
1405 if ( load >> shapeToTreat ) {
1406 _isToIgnoreShapes = !shapeToTreat;
1407 if ( load >> method )
1408 _method = (ExtrusionMethod) method;
1410 if ( load >> nameSize && nameSize > 0 )
1412 _groupName.resize( nameSize );
1413 load.get( _groupName[0] ); // remove a white-space
1414 load.getline( &_groupName[0], nameSize + 1 );
1418 _isToIgnoreShapes = true; // old behavior
1421 } // --------------------------------------------------------------------------------
1422 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* /*theMesh*/,
1423 const TopoDS_Shape& /*theShape*/)
1427 } // --------------------------------------------------------------------------------
1428 SMESH_ComputeErrorPtr
1429 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1430 const TopoDS_Shape& theShape,
1431 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1433 VISCOUS_3D::_ViscousBuilder builder;
1434 SMESH_ComputeErrorPtr err = builder.CheckHypotheses( theMesh, theShape );
1435 if ( err && !err->IsOK() )
1436 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1438 theStatus = SMESH_Hypothesis::HYP_OK;
1442 // --------------------------------------------------------------------------------
1443 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1446 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1447 return IsToIgnoreShapes() ? !isIn : isIn;
1449 // --------------------------------------------------------------------------------
1450 double StdMeshers_ViscousLayers::Get1stLayerThickness( double T, double f, int N )
1452 const double fPowN = pow( f, N );
1454 if ( fPowN - 1 <= numeric_limits<double>::min() )
1457 h0 = T * ( f - 1 )/( fPowN - 1 );
1460 // --------------------------------------------------------------------------------
1461 SMDS_MeshGroup* StdMeshers_ViscousLayers::CreateGroup( const std::string& theName,
1462 SMESH_Mesh& theMesh,
1463 SMDSAbs_ElementType theType)
1465 SMESH_Group* group = 0;
1466 SMDS_MeshGroup* groupDS = 0;
1468 if ( theName.empty() )
1471 if ( SMESH_Mesh::GroupIteratorPtr grIt = theMesh.GetGroups() )
1472 while( grIt->more() && !group )
1474 group = grIt->next();
1476 group->GetGroupDS()->GetType() != theType ||
1477 group->GetName() != theName ||
1478 !dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() ))
1482 group = theMesh.AddGroup( theType, theName.c_str() );
1484 groupDS = & dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() )->SMDSGroup();
1489 // END StdMeshers_ViscousLayers hypothesis
1490 //================================================================================
1492 namespace VISCOUS_3D
1494 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV,
1495 const double h0, bool* isRegularEdge = nullptr )
1499 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1500 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1501 gp_Pnt p = BRep_Tool::Pnt( fromV );
1502 gp_Pnt pf = c->Value( f ), pl = c->Value( l );
1503 double distF = p.SquareDistance( pf );
1504 double distL = p.SquareDistance( pl );
1505 c->D1(( distF < distL ? f : l), p, dir );
1506 if ( distL < distF ) dir.Reverse();
1507 bool isDifficult = false;
1508 if ( dir.SquareMagnitude() < h0 * h0 ) // check dir orientation
1510 gp_Pnt& pClose = distF < distL ? pf : pl;
1511 gp_Pnt& pFar = distF < distL ? pl : pf;
1512 gp_Pnt pMid = 0.9 * pClose.XYZ() + 0.1 * pFar.XYZ();
1513 gp_Vec vMid( p, pMid );
1514 double dot = vMid * dir;
1515 double cos2 = dot * dot / dir.SquareMagnitude() / vMid.SquareMagnitude();
1516 if ( cos2 < 0.7 * 0.7 || dot < 0 ) // large angle between dir and vMid
1518 double uClose = distF < distL ? f : l;
1519 double uFar = distF < distL ? l : f;
1520 double r = h0 / SMESH_Algo::EdgeLength( E );
1521 double uMid = ( 1 - r ) * uClose + r * uFar;
1522 pMid = c->Value( uMid );
1523 dir = gp_Vec( p, pMid );
1527 if ( isRegularEdge )
1528 *isRegularEdge = !isDifficult;
1532 //--------------------------------------------------------------------------------
1533 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1534 SMESH_MesherHelper& helper)
1537 double f,l; gp_Pnt p;
1538 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1539 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1540 double u = helper.GetNodeU( E, atNode );
1544 //--------------------------------------------------------------------------------
1545 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1546 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok/*,
1548 //--------------------------------------------------------------------------------
1549 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1550 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1553 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1556 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1557 return getFaceDir( F, v, node, helper, ok );
1559 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1560 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1561 gp_Pnt p; gp_Vec du, dv, norm;
1562 surface->D1( uv.X(),uv.Y(), p, du,dv );
1565 double u = helper.GetNodeU( fromE, node, 0, &ok );
1567 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1568 if ( o == TopAbs_REVERSED )
1571 gp_Vec dir = norm ^ du;
1573 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1574 helper.IsClosedEdge( fromE ))
1576 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1577 else c->D1( f, p, dv );
1578 if ( o == TopAbs_REVERSED )
1580 gp_Vec dir2 = norm ^ dv;
1581 dir = dir.Normalized() + dir2.Normalized();
1585 //--------------------------------------------------------------------------------
1586 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1587 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1588 bool& ok/*, double* cosin*/)
1590 TopoDS_Face faceFrw = F;
1591 faceFrw.Orientation( TopAbs_FORWARD );
1592 //double f,l; TopLoc_Location loc;
1593 TopoDS_Edge edges[2]; // sharing a vertex
1596 TopoDS_Vertex VV[2];
1597 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1598 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1600 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1601 if ( SMESH_Algo::isDegenerated( e )) continue;
1602 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1603 if ( VV[1].IsSame( fromV )) {
1604 nbEdges += edges[ 0 ].IsNull();
1607 else if ( VV[0].IsSame( fromV )) {
1608 nbEdges += edges[ 1 ].IsNull();
1613 gp_XYZ dir(0,0,0), edgeDir[2];
1616 // get dirs of edges going fromV
1618 for ( size_t i = 0; i < nbEdges && ok; ++i )
1620 edgeDir[i] = getEdgeDir( edges[i], fromV, 0.1 * SMESH_Algo::EdgeLength( edges[i] ));
1621 double size2 = edgeDir[i].SquareModulus();
1622 if (( ok = size2 > numeric_limits<double>::min() ))
1623 edgeDir[i] /= sqrt( size2 );
1625 if ( !ok ) return dir;
1627 // get angle between the 2 edges
1629 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1630 if ( Abs( angle ) < 5 * M_PI/180 )
1632 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1636 dir = edgeDir[0] + edgeDir[1];
1641 // double angle = faceNormal.Angle( dir );
1642 // *cosin = Cos( angle );
1645 else if ( nbEdges == 1 )
1647 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1648 //if ( cosin ) *cosin = 1.;
1658 //================================================================================
1660 * \brief Finds concave VERTEXes of a FACE
1662 //================================================================================
1664 bool getConcaveVertices( const TopoDS_Face& F,
1665 SMESH_MesherHelper& helper,
1666 set< TGeomID >* vertices = 0)
1668 // check angles at VERTEXes
1670 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1671 for ( size_t iW = 0; iW < wires.size(); ++iW )
1673 const int nbEdges = wires[iW]->NbEdges();
1674 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1676 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1678 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1679 int iE2 = ( iE1 + 1 ) % nbEdges;
1680 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1681 iE2 = ( iE2 + 1 ) % nbEdges;
1682 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1683 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1684 wires[iW]->Edge( iE2 ), F, V );
1685 if ( angle < -5. * M_PI / 180. )
1689 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1693 return vertices ? !vertices->empty() : false;
1696 //================================================================================
1698 * \brief Returns true if a FACE is bound by a concave EDGE
1700 //================================================================================
1702 bool isConcave( const TopoDS_Face& F,
1703 SMESH_MesherHelper& helper,
1704 set< TGeomID >* vertices = 0 )
1706 bool isConcv = false;
1707 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1709 gp_Vec2d drv1, drv2;
1711 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1712 for ( ; eExp.More(); eExp.Next() )
1714 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1715 if ( SMESH_Algo::isDegenerated( E )) continue;
1716 // check if 2D curve is concave
1717 BRepAdaptor_Curve2d curve( E, F );
1718 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1719 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1720 curve.Intervals( intervals, GeomAbs_C2 );
1721 bool isConvex = true;
1722 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1724 double u1 = intervals( i );
1725 double u2 = intervals( i+1 );
1726 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1727 double cross = drv1 ^ drv2;
1728 if ( E.Orientation() == TopAbs_REVERSED )
1730 isConvex = ( cross > -1e-9 ); // 0.1 );
1734 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1743 // check angles at VERTEXes
1744 if ( getConcaveVertices( F, helper, vertices ))
1750 //================================================================================
1752 * \brief Computes minimal distance of face in-FACE nodes from an EDGE
1753 * \param [in] face - the mesh face to treat
1754 * \param [in] nodeOnEdge - a node on the EDGE
1755 * \param [out] faceSize - the computed distance
1756 * \return bool - true if faceSize computed
1758 //================================================================================
1760 bool getDistFromEdge( const SMDS_MeshElement* face,
1761 const SMDS_MeshNode* nodeOnEdge,
1764 faceSize = Precision::Infinite();
1767 int nbN = face->NbCornerNodes();
1768 int iOnE = face->GetNodeIndex( nodeOnEdge );
1769 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1770 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1771 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1772 face->GetNode( iNext[1] ) };
1773 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1774 double segLen = -1.;
1775 // look for two neighbor not in-FACE nodes of face
1776 for ( int i = 0; i < 2; ++i )
1778 if (( nNext[i]->GetPosition()->GetDim() != 2 ) &&
1779 ( nodeOnEdge->GetPosition()->GetDim() == 0 || nNext[i]->GetID() < nodeOnEdge->GetID() ))
1781 // look for an in-FACE node
1782 for ( int iN = 0; iN < nbN; ++iN )
1784 if ( iN == iOnE || iN == iNext[i] )
1786 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1787 gp_XYZ v = pInFace - segEnd;
1790 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1791 segLen = segVec.Modulus();
1793 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1794 faceSize = Min( faceSize, distToSeg );
1802 //================================================================================
1804 * \brief Return direction of axis or revolution of a surface
1806 //================================================================================
1808 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1811 switch ( surface.GetType() ) {
1814 gp_Cone cone = surface.Cone();
1815 axis = cone.Axis().Direction();
1818 case GeomAbs_Sphere:
1820 gp_Sphere sphere = surface.Sphere();
1821 axis = sphere.Position().Direction();
1824 case GeomAbs_SurfaceOfRevolution:
1826 axis = surface.AxeOfRevolution().Direction();
1829 //case GeomAbs_SurfaceOfExtrusion:
1830 case GeomAbs_OffsetSurface:
1832 #if OCC_VERSION_LARGE < 0x07070000
1833 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1834 return getRovolutionAxis( base->Surface(), axis );
1836 Handle(Adaptor3d_Surface) base = surface.BasisSurface();
1837 return getRovolutionAxis( *base, axis );
1840 default: return false;
1845 //--------------------------------------------------------------------------------
1846 // DEBUG. Dump intermediate node positions into a python script
1847 // HOWTO use: run python commands written in a console and defined in /tmp/viscous.py
1848 // to see construction steps of viscous layers
1854 PyDump(SMESH_Mesh& m) {
1855 int tag = 3 + m.GetId();
1856 const char* fname = "/tmp/viscous.py";
1857 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
1858 py = _pyStream = new ofstream(fname);
1859 *py << "import SMESH" << endl
1860 << "from salome.smesh import smeshBuilder" << endl
1861 << "smesh = smeshBuilder.New()" << endl
1862 << "meshSO = salome.myStudy.FindObjectID('0:1:2:" << tag <<"')" << endl
1863 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1868 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1869 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1870 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1871 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1875 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1876 struct MyStream : public ostream
1878 template <class T> ostream & operator<<( const T &anything ) { return *this ; }
1880 void Pause() { py = &_mystream; }
1881 void Resume() { py = _pyStream; }
1885 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1886 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1887 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1888 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1889 void _dumpFunction(const string& fun, int ln)
1890 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1891 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1892 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1893 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1894 void _dumpCmd(const string& txt, int ln)
1895 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1896 void dumpFunctionEnd()
1897 { if (py) *py<< " return"<< endl; }
1898 void dumpChangeNodes( const SMDS_MeshElement* f )
1899 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1900 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1901 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1902 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1906 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} void Pause() {} void Resume() {} };
1907 #define dumpFunction(f) f
1909 #define dumpMoveComm(n,txt)
1910 #define dumpCmd(txt)
1911 #define dumpFunctionEnd()
1912 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1913 #define debugMsg( txt ) {}
1918 using namespace VISCOUS_3D;
1920 //================================================================================
1922 * \brief Constructor of _ViscousBuilder
1924 //================================================================================
1926 _ViscousBuilder::_ViscousBuilder()
1928 _error = SMESH_ComputeError::New(COMPERR_OK);
1932 //================================================================================
1934 * \brief Stores error description and returns false
1936 //================================================================================
1938 bool _ViscousBuilder::error(const string& text, int solidId )
1940 const string prefix = string("Viscous layers builder: ");
1941 _error->myName = COMPERR_ALGO_FAILED;
1942 _error->myComment = prefix + text;
1945 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1946 if ( !sm && !_sdVec.empty() )
1947 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1948 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1950 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1951 if ( smError && smError->myAlgo )
1952 _error->myAlgo = smError->myAlgo;
1954 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1956 // set KO to all solids
1957 for ( size_t i = 0; i < _sdVec.size(); ++i )
1959 if ( _sdVec[i]._index == solidId )
1961 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1962 if ( !sm->IsEmpty() )
1964 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1965 if ( !smError || smError->IsOK() )
1967 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1968 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1972 makeGroupOfLE(); // debug
1977 //================================================================================
1979 * \brief At study restoration, restore event listeners used to clear an inferior
1980 * dim sub-mesh modified by viscous layers
1982 //================================================================================
1984 void _ViscousBuilder::RestoreListeners()
1989 //================================================================================
1991 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1993 //================================================================================
1995 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1997 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1998 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1999 for ( ; fExp.More(); fExp.Next() )
2001 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
2002 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
2004 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
2006 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
2009 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
2010 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
2012 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
2013 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
2014 while( prxIt->more() )
2016 const SMDS_MeshElement* fSrc = srcIt->next();
2017 const SMDS_MeshElement* fPrx = prxIt->next();
2018 if ( fSrc->NbNodes() != fPrx->NbNodes())
2019 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
2020 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
2021 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
2024 pm->_n2nMapComputed = true;
2028 //================================================================================
2030 * \brief Does its job
2032 //================================================================================
2034 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
2035 const TopoDS_Shape& theShape)
2041 // check if proxy mesh already computed
2042 TopExp_Explorer exp( theShape, TopAbs_SOLID );
2044 return error("No SOLID's in theShape"), _error;
2046 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
2047 return SMESH_ComputeErrorPtr(); // everything already computed
2049 // TODO: ignore already computed SOLIDs
2050 if ( !findSolidsWithLayers())
2053 if ( !findFacesWithLayers() )
2056 if ( !makeEdgesOnShape() )
2059 findPeriodicFaces();
2061 PyDump debugDump( theMesh );
2062 _pyDump = &debugDump;
2065 for ( size_t i = 0; i < _sdVec.size(); ++i )
2068 for ( iSD = 0; iSD < _sdVec.size(); ++iSD ) // find next SOLID to compute
2069 if ( _sdVec[iSD]._before.IsEmpty() &&
2070 !_sdVec[iSD]._solid.IsNull() &&
2071 !_sdVec[iSD]._done )
2073 if ( iSD == _sdVec.size() )
2076 if ( ! makeLayer(_sdVec[iSD]) ) // create _LayerEdge's
2079 if ( _sdVec[iSD]._n2eMap.size() == 0 ) // no layers in a SOLID
2081 _sdVec[iSD]._solid.Nullify();
2085 if ( ! inflate(_sdVec[iSD]) ) // increase length of _LayerEdge's
2088 if ( ! refine(_sdVec[iSD]) ) // create nodes and prisms
2091 if ( ! shrink(_sdVec[iSD]) ) // shrink 2D mesh on FACEs w/o layer
2094 bool notMissingFaces = addBoundaryElements(_sdVec[iSD]); // create quadrangles on prism bare sides
2096 if ( !notMissingFaces )
2098 SMESH_MeshEditor editor( &theMesh );
2099 TIDSortedElemSet elements;
2100 editor.MakeBoundaryMesh( elements, SMESH_MeshEditor::BND_2DFROM3D );
2103 _sdVec[iSD]._done = true;
2105 const TopoDS_Shape& solid = _sdVec[iSD]._solid;
2106 for ( iSD = 0; iSD < _sdVec.size(); ++iSD )
2107 _sdVec[iSD]._before.Remove( solid );
2110 makeGroupOfLE(); // debug
2116 //================================================================================
2118 * \brief Check validity of hypotheses
2120 //================================================================================
2122 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
2123 const TopoDS_Shape& shape )
2127 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
2128 return SMESH_ComputeErrorPtr(); // everything already computed
2131 findSolidsWithLayers( /*checkFaceMesh=*/false );
2132 bool ok = findFacesWithLayers( true );
2134 // remove _MeshOfSolid's of _SolidData's
2135 for ( size_t i = 0; i < _sdVec.size(); ++i )
2136 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
2141 return SMESH_ComputeErrorPtr();
2144 //================================================================================
2146 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
2148 //================================================================================
2150 bool _ViscousBuilder::findSolidsWithLayers(const bool checkFaceMesh)
2153 TopTools_IndexedMapOfShape allSolids;
2154 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
2155 _sdVec.reserve( allSolids.Extent());
2157 SMESH_HypoFilter filter;
2158 for ( int i = 1; i <= allSolids.Extent(); ++i )
2160 SMESH_subMesh* sm = _mesh->GetSubMesh( allSolids(i) );
2161 if ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbElements() > 0 )
2162 continue; // solid is already meshed
2163 // TODO: check if algo is hidden
2164 SMESH_Algo* algo = sm->GetAlgo();
2165 if ( !algo ) continue;
2166 // check if all FACEs are meshed, which can be false if Compute() a sub-shape
2167 if ( checkFaceMesh )
2169 bool facesMeshed = true;
2170 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,true);
2171 while ( smIt->more() && facesMeshed )
2173 SMESH_subMesh * faceSM = smIt->next();
2174 if ( faceSM->GetSubShape().ShapeType() != TopAbs_FACE )
2176 facesMeshed = faceSM->IsMeshComputed();
2181 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
2182 const list <const SMESHDS_Hypothesis *> & allHyps =
2183 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
2184 _SolidData* soData = 0;
2185 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
2186 const StdMeshers_ViscousLayers* viscHyp = 0;
2187 for ( ; hyp != allHyps.end(); ++hyp )
2188 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
2190 TopoDS_Shape hypShape;
2191 filter.Init( filter.Is( viscHyp ));
2192 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
2196 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
2199 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
2200 soData = & _sdVec.back();
2201 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
2202 soData->_helper = new SMESH_MesherHelper( *_mesh );
2203 soData->_helper->SetSubShape( allSolids(i) );
2204 _solids.Add( allSolids(i) );
2206 soData->_hyps.push_back( viscHyp );
2207 soData->_hypShapes.push_back( hypShape );
2210 if ( _sdVec.empty() )
2212 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
2217 //================================================================================
2219 * \brief Set a _SolidData to be computed before another
2221 //================================================================================
2223 bool _ViscousBuilder::setBefore( _SolidData& solidBefore, _SolidData& solidAfter )
2225 // check possibility to set this order; get all solids before solidBefore
2226 TopTools_IndexedMapOfShape allSolidsBefore;
2227 allSolidsBefore.Add( solidBefore._solid );
2228 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2230 int iSD = _solids.FindIndex( allSolidsBefore(i) );
2233 TopTools_MapIteratorOfMapOfShape soIt( _sdVec[ iSD-1 ]._before );
2234 for ( ; soIt.More(); soIt.Next() )
2235 allSolidsBefore.Add( soIt.Value() );
2238 if ( allSolidsBefore.Contains( solidAfter._solid ))
2241 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2242 solidAfter._before.Add( allSolidsBefore(i) );
2247 //================================================================================
2251 //================================================================================
2253 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
2255 SMESH_MesherHelper helper( *_mesh );
2256 TopExp_Explorer exp;
2258 // collect all faces-to-ignore defined by hyp
2259 for ( size_t i = 0; i < _sdVec.size(); ++i )
2261 // get faces-to-ignore defined by each hyp
2262 typedef const StdMeshers_ViscousLayers* THyp;
2263 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
2264 list< TFacesOfHyp > ignoreFacesOfHyps;
2265 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
2266 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
2267 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
2269 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
2270 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
2273 // fill _SolidData::_face2hyp and check compatibility of hypotheses
2274 const int nbHyps = _sdVec[i]._hyps.size();
2277 // check if two hypotheses define different parameters for the same FACE
2278 list< TFacesOfHyp >::iterator igFacesOfHyp;
2279 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2281 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
2283 igFacesOfHyp = ignoreFacesOfHyps.begin();
2284 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2285 if ( ! igFacesOfHyp->first.count( faceID ))
2288 return error(SMESH_Comment("Several hypotheses define "
2289 "Viscous Layers on the face #") << faceID );
2290 hyp = igFacesOfHyp->second;
2293 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2295 _sdVec[i]._ignoreFaceIds.insert( faceID );
2298 // check if two hypotheses define different number of viscous layers for
2299 // adjacent faces of a solid
2300 set< int > nbLayersSet;
2301 igFacesOfHyp = ignoreFacesOfHyps.begin();
2302 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2304 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2306 if ( nbLayersSet.size() > 1 )
2308 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2310 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2311 THyp hyp1 = 0, hyp2 = 0;
2312 while( const TopoDS_Shape* face = fIt->next() )
2314 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2315 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2316 if ( f2h != _sdVec[i]._face2hyp.end() )
2318 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2321 if ( hyp1 && hyp2 &&
2322 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2324 return error("Two hypotheses define different number of "
2325 "viscous layers on adjacent faces");
2329 } // if ( nbHyps > 1 )
2332 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2336 if ( onlyWith ) // is called to check hypotheses compatibility only
2339 // fill _SolidData::_reversedFaceIds
2340 for ( size_t i = 0; i < _sdVec.size(); ++i )
2342 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2343 for ( ; exp.More(); exp.Next() )
2345 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2346 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2347 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2348 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2349 helper.IsReversedSubMesh( face ))
2351 _sdVec[i]._reversedFaceIds.insert( faceID );
2356 // Find FACEs to shrink mesh on (solution 2 in issue 0020832): fill in _shrinkShape2Shape
2357 TopTools_IndexedMapOfShape shapes;
2358 std::string structAlgoName = "Hexa_3D";
2359 for ( size_t i = 0; i < _sdVec.size(); ++i )
2362 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2363 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2365 const TopoDS_Shape& edge = shapes(iE);
2366 // find 2 FACEs sharing an EDGE
2368 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE, &_sdVec[i]._solid);
2369 while ( fIt->more())
2371 const TopoDS_Shape* f = fIt->next();
2372 FF[ int( !FF[0].IsNull()) ] = *f;
2374 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2376 // check presence of layers on them
2378 for ( int j = 0; j < 2; ++j )
2379 ignore[j] = _sdVec[i]._ignoreFaceIds.count( getMeshDS()->ShapeToIndex( FF[j] ));
2380 if ( ignore[0] == ignore[1] )
2381 continue; // nothing interesting
2382 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ]; // FACE w/o layers
2385 if ( !fWOL.IsNull())
2387 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2388 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2393 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2395 for ( size_t i = 0; i < _sdVec.size(); ++i )
2398 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2399 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2401 const TopoDS_Shape& vertex = shapes(iV);
2402 // find faces WOL sharing the vertex
2403 vector< TopoDS_Shape > facesWOL;
2404 size_t totalNbFaces = 0;
2405 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE, &_sdVec[i]._solid );
2406 while ( fIt->more())
2408 const TopoDS_Shape* f = fIt->next();
2410 const int fID = getMeshDS()->ShapeToIndex( *f );
2411 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&& !_sdVec[i]._noShrinkShapes.count( fID )*/)
2412 facesWOL.push_back( *f );
2414 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2415 continue; // no layers at this vertex or no WOL
2416 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2417 switch ( facesWOL.size() )
2421 helper.SetSubShape( facesWOL[0] );
2422 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2424 TopoDS_Shape seamEdge;
2425 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2426 while ( eIt->more() && seamEdge.IsNull() )
2428 const TopoDS_Shape* e = eIt->next();
2429 if ( helper.IsRealSeam( *e ) )
2432 if ( !seamEdge.IsNull() )
2434 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2438 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2443 // find an edge shared by 2 faces
2444 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2445 while ( eIt->more())
2447 const TopoDS_Shape* e = eIt->next();
2448 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2449 helper.IsSubShape( *e, facesWOL[1]))
2451 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2457 std::ostringstream msg;
2458 msg << "Not yet supported case: vertex bounded by ";
2459 msg << facesWOL.size();
2460 msg << " faces without layer at coordinates (";
2461 TopoDS_Vertex v = TopoDS::Vertex(vertex);
2462 gp_Pnt p = BRep_Tool::Pnt(v);
2463 msg << p.X() << ", " << p.Y() << ", " << p.Z() << ")";
2464 return error(msg.str().c_str(), _sdVec[i]._index);
2469 // Add to _noShrinkShapes sub-shapes of FACE's that can't be shrunk since
2470 // the algo of the SOLID sharing the FACE does not support it or for other reasons
2471 set< string > notSupportAlgos; notSupportAlgos.insert( structAlgoName );
2472 for ( size_t i = 0; i < _sdVec.size(); ++i )
2474 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2475 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2477 const TopoDS_Shape& fWOL = e2f->second;
2478 const TGeomID edgeID = e2f->first;
2479 TGeomID faceID = getMeshDS()->ShapeToIndex( fWOL );
2480 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2481 if ( edge.ShapeType() != TopAbs_EDGE )
2482 continue; // shrink shape is VERTEX
2485 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2486 while ( soIt->more() && solid.IsNull() )
2488 const TopoDS_Shape* so = soIt->next();
2489 if ( !so->IsSame( _sdVec[i]._solid ))
2492 if ( solid.IsNull() )
2495 bool noShrinkE = false;
2496 SMESH_Algo* algo = _mesh->GetSubMesh( solid )->GetAlgo();
2497 bool isStructured = ( algo && algo->GetName() == structAlgoName );
2498 size_t iSolid = _solids.FindIndex( solid ) - 1;
2499 if ( iSolid < _sdVec.size() && _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2501 // the adjacent SOLID has NO layers on fWOL;
2502 // shrink allowed if
2503 // - there are layers on the EDGE in the adjacent SOLID
2504 // - there are NO layers in the adjacent SOLID && algo is unstructured and computed later
2505 bool hasWLAdj = (_sdVec[iSolid]._shrinkShape2Shape.count( edgeID ));
2506 bool shrinkAllowed = (( hasWLAdj ) ||
2507 ( !isStructured && setBefore( _sdVec[ i ], _sdVec[ iSolid ] )));
2508 noShrinkE = !shrinkAllowed;
2510 else if ( iSolid < _sdVec.size() )
2512 // the adjacent SOLID has layers on fWOL;
2513 // check if SOLID's mesh is unstructured and then try to set it
2514 // to be computed after the i-th solid
2515 if ( isStructured || !setBefore( _sdVec[ i ], _sdVec[ iSolid ] ))
2516 noShrinkE = true; // don't shrink fWOL
2520 // the adjacent SOLID has NO layers at all
2521 noShrinkE = isStructured;
2526 _sdVec[i]._noShrinkShapes.insert( edgeID );
2528 // check if there is a collision with to-shrink-from EDGEs in iSolid
2529 // if ( iSolid < _sdVec.size() )
2532 // TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2533 // for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2535 // const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2536 // const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2537 // if ( eID == edgeID ||
2538 // !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2539 // _sdVec[i]._noShrinkShapes.count( eID ))
2541 // for ( int is1st = 0; is1st < 2; ++is1st )
2543 // TopoDS_Vertex V = helper.IthVertex( is1st, E );
2544 // if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2546 // return error("No way to make a conformal mesh with "
2547 // "the given set of faces with layers", _sdVec[i]._index);
2554 // add VERTEXes of the edge in _noShrinkShapes, which is necessary if
2555 // _shrinkShape2Shape is different in the adjacent SOLID
2556 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2558 TGeomID vID = getMeshDS()->ShapeToIndex( vIt.Value() );
2559 bool noShrinkV = false, noShrinkIfAdjMeshed = false;
2561 if ( iSolid < _sdVec.size() )
2563 if ( _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2565 map< TGeomID, TopoDS_Shape >::iterator i2S, i2SAdj;
2566 i2S = _sdVec[i ]._shrinkShape2Shape.find( vID );
2567 i2SAdj = _sdVec[iSolid]._shrinkShape2Shape.find( vID );
2568 if ( i2SAdj == _sdVec[iSolid]._shrinkShape2Shape.end() )
2569 noShrinkV = (( isStructured ) ||
2570 ( noShrinkIfAdjMeshed = i2S->second.ShapeType() == TopAbs_EDGE ));
2572 noShrinkV = ( ! i2S->second.IsSame( i2SAdj->second ));
2576 noShrinkV = noShrinkE;
2581 // the adjacent SOLID has NO layers at all
2588 noShrinkV = noShrinkIfAdjMeshed =
2589 ( _sdVec[i]._shrinkShape2Shape[ vID ].ShapeType() == TopAbs_EDGE );
2593 if ( noShrinkV && noShrinkIfAdjMeshed )
2595 // noShrinkV if FACEs in the adjacent SOLID are meshed
2596 PShapeIteratorPtr fIt = helper.GetAncestors( _sdVec[i]._shrinkShape2Shape[ vID ],
2597 *_mesh, TopAbs_FACE, &solid );
2598 while ( fIt->more() )
2600 const TopoDS_Shape* f = fIt->next();
2601 if ( !f->IsSame( fWOL ))
2603 noShrinkV = ! _mesh->GetSubMesh( *f )->IsEmpty();
2609 _sdVec[i]._noShrinkShapes.insert( vID );
2612 } // loop on _sdVec[i]._shrinkShape2Shape
2613 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2616 // add FACEs of other SOLIDs to _ignoreFaceIds
2617 for ( size_t i = 0; i < _sdVec.size(); ++i )
2620 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2622 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2624 if ( !shapes.Contains( exp.Current() ))
2625 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2632 //================================================================================
2634 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2636 //================================================================================
2638 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2639 const StdMeshers_ViscousLayers* hyp,
2640 const TopoDS_Shape& hypShape,
2641 set<TGeomID>& ignoreFaceIds)
2643 TopExp_Explorer exp;
2645 vector<TGeomID> ids = hyp->GetBndShapes();
2646 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2648 for ( size_t ii = 0; ii < ids.size(); ++ii )
2650 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2651 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2652 ignoreFaceIds.insert( ids[ii] );
2655 else // FACEs with layers are given
2657 exp.Init( solid, TopAbs_FACE );
2658 for ( ; exp.More(); exp.Next() )
2660 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2661 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2662 ignoreFaceIds.insert( faceInd );
2666 // ignore internal FACEs if inlets and outlets are specified
2667 if ( hyp->IsToIgnoreShapes() )
2669 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2670 TopExp::MapShapesAndAncestors( hypShape,
2671 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2673 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2675 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2676 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2679 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2681 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2686 //================================================================================
2688 * \brief Create the inner surface of the viscous layer and prepare data for infation
2690 //================================================================================
2692 bool _ViscousBuilder::makeLayer(_SolidData& data)
2694 // make a map to find new nodes on sub-shapes shared with other SOLID
2695 map< TGeomID, TNode2Edge* >::iterator s2ne;
2696 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2697 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2699 TGeomID shapeInd = s2s->first;
2700 for ( size_t i = 0; i < _sdVec.size(); ++i )
2702 if ( _sdVec[i]._index == data._index ) continue;
2703 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2704 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2705 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2707 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2713 // Create temporary faces and _LayerEdge's
2715 debugMsg( "######################" );
2716 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2718 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2720 data._stepSize = Precision::Infinite();
2721 data._stepSizeNodes[0] = 0;
2723 SMESH_MesherHelper helper( *_mesh );
2724 helper.SetSubShape( data._solid );
2725 helper.SetElementsOnShape( true );
2727 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2728 TNode2Edge::iterator n2e2;
2730 // make _LayerEdge's
2731 for ( TopExp_Explorer exp( data._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2733 const TopoDS_Face& F = TopoDS::Face( exp.Current() );
2734 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2735 const TGeomID id = sm->GetId();
2736 if ( edgesByGeom[ id ]._shape.IsNull() )
2737 continue; // no layers
2738 SMESH_ProxyMesh::SubMesh* proxySub =
2739 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2741 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2742 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << id, data._index );
2744 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2745 while ( eIt->more() )
2747 const SMDS_MeshElement* face = eIt->next();
2748 double faceMaxCosin = -1;
2749 _LayerEdge* maxCosinEdge = 0;
2750 int nbDegenNodes = 0;
2752 newNodes.resize( face->NbCornerNodes() );
2753 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2755 const SMDS_MeshNode* n = face->GetNode( i );
2756 const int shapeID = n->getshapeId();
2757 const bool onDegenShap = helper.IsDegenShape( shapeID );
2758 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2763 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2764 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2765 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2766 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2776 TNode2Edge::iterator n2e = data._n2eMap.insert({ n, nullptr }).first;
2777 if ( !(*n2e).second )
2780 _LayerEdge* edge = _Factory::NewLayerEdge();
2781 edge->_nodes.push_back( n );
2783 edgesByGeom[ shapeID ]._edges.push_back( edge );
2784 const bool noShrink = data._noShrinkShapes.count( shapeID );
2786 SMESH_TNodeXYZ xyz( n );
2788 // set edge data or find already refined _LayerEdge and get data from it
2789 if (( !noShrink ) &&
2790 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2791 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2792 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2794 _LayerEdge* foundEdge = (*n2e2).second;
2795 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2796 foundEdge->_pos.push_back( lastPos );
2797 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2798 const_cast< SMDS_MeshNode* >
2799 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2805 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2807 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2810 if ( edge->_nodes.size() < 2 && !noShrink )
2811 edge->Block( data ); // a sole node is moved only if noShrink
2813 dumpMove(edge->_nodes.back());
2815 if ( edge->_cosin > faceMaxCosin && edge->_nodes.size() > 1 )
2817 faceMaxCosin = edge->_cosin;
2818 maxCosinEdge = edge;
2821 newNodes[ i ] = n2e->second->_nodes.back();
2824 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2826 if ( newNodes.size() - nbDegenNodes < 2 )
2829 // create a temporary face
2830 const SMDS_MeshElement* newFace =
2831 new _TmpMeshFace( newNodes, --_tmpFaceID, face->GetShapeID(), face );
2832 proxySub->AddElement( newFace );
2834 // compute inflation step size by min size of element on a convex surface
2835 if ( faceMaxCosin > theMinSmoothCosin )
2836 limitStepSize( data, face, maxCosinEdge );
2838 } // loop on 2D elements on a FACE
2839 } // loop on FACEs of a SOLID to create _LayerEdge's
2842 // Set _LayerEdge::_neibors
2843 TNode2Edge::iterator n2e;
2844 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2846 _EdgesOnShape& eos = data._edgesOnShape[iS];
2847 for ( size_t i = 0; i < eos._edges.size(); ++i )
2849 _LayerEdge* edge = eos._edges[i];
2850 TIDSortedNodeSet nearNodes;
2851 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2852 while ( fIt->more() )
2854 const SMDS_MeshElement* f = fIt->next();
2855 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2856 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2858 nearNodes.erase( edge->_nodes[0] );
2859 edge->_neibors.reserve( nearNodes.size() );
2860 TIDSortedNodeSet::iterator node = nearNodes.begin();
2861 for ( ; node != nearNodes.end(); ++node )
2862 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2863 edge->_neibors.push_back( n2e->second );
2866 // Fix uv of nodes on periodic FACEs (bos #20643)
2868 if ( eos.ShapeType() != TopAbs_EDGE ||
2869 eos.SWOLType() != TopAbs_FACE ||
2873 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
2874 SMESH_MesherHelper faceHelper( *_mesh );
2875 faceHelper.SetSubShape( F );
2876 faceHelper.ToFixNodeParameters( true );
2877 if ( faceHelper.GetPeriodicIndex() == 0 )
2880 SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( F );
2881 if ( !smDS || smDS->GetNodes() == 0 )
2884 bool toCheck = true;
2885 const double tol = 2 * helper.MaxTolerance( F );
2886 for ( SMDS_NodeIteratorPtr nIt = smDS->GetNodes(); nIt->more(); )
2888 const SMDS_MeshNode* node = nIt->next();
2889 gp_XY uvNew( Precision::Infinite(), 0 );
2893 gp_XY uv = faceHelper.GetNodeUV( F, node );
2894 if ( ! faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true ))
2895 break; // projection on F failed
2896 if (( uv - uvNew ).Modulus() < Precision::Confusion() )
2897 break; // current uv is OK
2899 faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true );
2903 data._epsilon = 1e-7;
2904 if ( data._stepSize < 1. )
2905 data._epsilon *= data._stepSize;
2907 if ( !findShapesToSmooth( data )) // _LayerEdge::_maxLen is computed here
2910 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2911 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2913 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2914 const SMDS_MeshNode* nn[2];
2915 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2917 _EdgesOnShape& eos = data._edgesOnShape[iS];
2918 for ( size_t i = 0; i < eos._edges.size(); ++i )
2920 _LayerEdge* edge = eos._edges[i];
2921 if ( edge->IsOnEdge() )
2923 // get neighbor nodes
2924 bool hasData = ( edge->_2neibors->_edges[0] );
2925 if ( hasData ) // _LayerEdge is a copy of another one
2927 nn[0] = edge->_2neibors->srcNode(0);
2928 nn[1] = edge->_2neibors->srcNode(1);
2930 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2934 // set neighbor _LayerEdge's
2935 for ( int j = 0; j < 2; ++j )
2937 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2938 return error("_LayerEdge not found by src node", data._index);
2939 edge->_2neibors->_edges[j] = n2e->second;
2942 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2945 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2947 _Simplex& s = edge->_simplices[j];
2948 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2949 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2952 // For an _LayerEdge on a degenerated EDGE, copy some data from
2953 // a corresponding _LayerEdge on a VERTEX
2954 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2955 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2957 // Generally we should not get here
2958 if ( eos.ShapeType() != TopAbs_EDGE )
2960 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2961 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2962 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2964 const _LayerEdge* vEdge = n2e->second;
2965 edge->_normal = vEdge->_normal;
2966 edge->_lenFactor = vEdge->_lenFactor;
2967 edge->_cosin = vEdge->_cosin;
2970 } // loop on data._edgesOnShape._edges
2971 } // loop on data._edgesOnShape
2973 // fix _LayerEdge::_2neibors on EDGEs to smooth
2974 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2975 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2976 // if ( !e2c->second.IsNull() )
2978 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2979 // data.Sort2NeiborsOnEdge( eos->_edges );
2986 //================================================================================
2988 * \brief Compute inflation step size by min size of element on a convex surface
2990 //================================================================================
2992 void _ViscousBuilder::limitStepSize( _SolidData& data,
2993 const SMDS_MeshElement* face,
2994 const _LayerEdge* maxCosinEdge )
2997 double minSize = 10 * data._stepSize;
2998 const int nbNodes = face->NbCornerNodes();
2999 for ( int i = 0; i < nbNodes; ++i )
3001 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
3002 const SMDS_MeshNode* curN = face->GetNode( i );
3003 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
3004 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
3006 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
3007 if ( dist < minSize )
3008 minSize = dist, iN = i;
3011 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
3012 if ( newStep < data._stepSize )
3014 data._stepSize = newStep;
3015 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
3016 data._stepSizeNodes[0] = face->GetNode( iN );
3017 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
3021 //================================================================================
3023 * \brief Compute inflation step size by min size of element on a convex surface
3025 //================================================================================
3027 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
3029 if ( minSize < data._stepSize )
3031 data._stepSize = minSize;
3032 if ( data._stepSizeNodes[0] )
3035 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
3036 data._stepSizeCoeff = data._stepSize / dist;
3041 //================================================================================
3043 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
3045 //================================================================================
3047 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
3049 SMESH_MesherHelper helper( *_mesh );
3051 BRepLProp_SLProps surfProp( 2, 1e-6 );
3052 data._convexFaces.clear();
3054 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
3056 _EdgesOnShape& eof = data._edgesOnShape[iS];
3057 if ( eof.ShapeType() != TopAbs_FACE ||
3058 data._ignoreFaceIds.count( eof._shapeID ))
3061 TopoDS_Face F = TopoDS::Face( eof._shape );
3062 const TGeomID faceID = eof._shapeID;
3064 BRepAdaptor_Surface surface( F, false );
3065 surfProp.SetSurface( surface );
3067 _ConvexFace cnvFace;
3069 cnvFace._normalsFixed = false;
3070 cnvFace._isTooCurved = false;
3071 cnvFace._normalsFixedOnBorders = false;
3073 double maxCurvature = cnvFace.GetMaxCurvature( data, eof, surfProp, helper );
3074 if ( maxCurvature > 0 )
3076 limitStepSize( data, 0.9 / maxCurvature );
3077 findEdgesToUpdateNormalNearConvexFace( cnvFace, data, helper );
3079 if ( !cnvFace._isTooCurved ) continue;
3081 _ConvexFace & convFace =
3082 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
3084 // skip a closed surface (data._convexFaces is useful anyway)
3085 bool isClosedF = false;
3086 helper.SetSubShape( F );
3087 if ( helper.HasRealSeam() )
3089 // in the closed surface there must be a closed EDGE
3090 for ( TopExp_Explorer eIt( F, TopAbs_EDGE ); eIt.More() && !isClosedF; eIt.Next() )
3091 isClosedF = helper.IsClosedEdge( TopoDS::Edge( eIt.Current() ));
3095 // limit _LayerEdge::_maxLen on the FACE
3096 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
3097 const double minCurvature =
3098 1. / ( eof._hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
3099 map< TGeomID, _EdgesOnShape* >::iterator id2eos = cnvFace._subIdToEOS.find( faceID );
3100 if ( id2eos != cnvFace._subIdToEOS.end() )
3102 _EdgesOnShape& eos = * id2eos->second;
3103 for ( size_t i = 0; i < eos._edges.size(); ++i )
3105 _LayerEdge* ledge = eos._edges[ i ];
3106 gp_XY uv = helper.GetNodeUV( F, ledge->_nodes[0] );
3107 surfProp.SetParameters( uv.X(), uv.Y() );
3108 if ( surfProp.IsCurvatureDefined() )
3110 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
3111 surfProp.MinCurvature() * oriFactor );
3112 if ( curvature > minCurvature )
3113 ledge->SetMaxLen( Min( ledge->_maxLen, 1. / curvature ));
3120 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
3121 // prism distortion.
3122 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
3123 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
3125 // there are _LayerEdge's on the FACE it-self;
3126 // select _LayerEdge's near EDGEs
3127 _EdgesOnShape& eos = * id2eos->second;
3128 for ( size_t i = 0; i < eos._edges.size(); ++i )
3130 _LayerEdge* ledge = eos._edges[ i ];
3131 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
3132 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
3134 // do not select _LayerEdge's neighboring sharp EDGEs
3135 bool sharpNbr = false;
3136 for ( size_t iN = 0; iN < ledge->_neibors.size() && !sharpNbr; ++iN )
3137 sharpNbr = ( ledge->_neibors[iN]->_cosin > theMinSmoothCosin );
3139 convFace._simplexTestEdges.push_back( ledge );
3146 // where there are no _LayerEdge's on a _ConvexFace,
3147 // as e.g. on a fillet surface with no internal nodes - issue 22580,
3148 // so that collision of viscous internal faces is not detected by check of
3149 // intersection of _LayerEdge's with the viscous internal faces.
3151 set< const SMDS_MeshNode* > usedNodes;
3153 // look for _LayerEdge's with null _sWOL
3154 id2eos = convFace._subIdToEOS.begin();
3155 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
3157 _EdgesOnShape& eos = * id2eos->second;
3158 if ( !eos._sWOL.IsNull() )
3160 for ( size_t i = 0; i < eos._edges.size(); ++i )
3162 _LayerEdge* ledge = eos._edges[ i ];
3163 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
3164 if ( !usedNodes.insert( srcNode ).second ) continue;
3166 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
3168 usedNodes.insert( ledge->_simplices[i]._nPrev );
3169 usedNodes.insert( ledge->_simplices[i]._nNext );
3171 convFace._simplexTestEdges.push_back( ledge );
3175 } // loop on FACEs of data._solid
3178 //================================================================================
3180 * \brief Detect shapes (and _LayerEdge's on them) to smooth
3182 //================================================================================
3184 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
3186 // define allowed thickness
3187 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
3190 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
3191 // boundary inclined to the shape at a sharp angle
3193 TopTools_MapOfShape edgesOfSmooFaces;
3194 SMESH_MesherHelper helper( *_mesh );
3197 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3198 data._nbShapesToSmooth = 0;
3200 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3202 _EdgesOnShape& eos = edgesByGeom[iS];
3203 eos._toSmooth = false;
3204 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
3207 double tgtThick = eos._hyp.GetTotalThickness();
3208 SMESH_subMeshIteratorPtr subIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false );
3209 while ( subIt->more() && !eos._toSmooth )
3211 TGeomID iSub = subIt->next()->GetId();
3212 const vector<_LayerEdge*>& eSub = edgesByGeom[ iSub ]._edges;
3213 if ( eSub.empty() ) continue;
3216 for ( size_t i = 0; i < eSub.size() && !eos._toSmooth; ++i )
3217 if ( eSub[i]->_cosin > theMinSmoothCosin )
3219 SMDS_ElemIteratorPtr fIt = eSub[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
3220 while ( fIt->more() && !eos._toSmooth )
3222 const SMDS_MeshElement* face = fIt->next();
3223 if ( face->getshapeId() == eos._shapeID &&
3224 getDistFromEdge( face, eSub[i]->_nodes[0], faceSize ))
3226 eos._toSmooth = needSmoothing( eSub[i]->_cosin,
3227 tgtThick * eSub[i]->_lenFactor,
3233 if ( eos._toSmooth )
3235 for ( TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
3236 edgesOfSmooFaces.Add( eExp.Current() );
3238 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
3240 data._nbShapesToSmooth += eos._toSmooth;
3244 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
3246 _EdgesOnShape& eos = edgesByGeom[iS];
3247 eos._edgeSmoother = NULL;
3248 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
3249 if ( !eos._hyp.ToSmooth() ) continue;
3251 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
3252 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
3255 double tgtThick = eos._hyp.GetTotalThickness(), h0 = eos._hyp.Get1stLayerThickness();
3256 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
3258 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
3259 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
3260 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
3261 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ), h0 );
3262 double angle = eDir.Angle( eV[0]->_normal );
3263 double cosin = Cos( angle );
3264 double cosinAbs = Abs( cosin );
3265 if ( cosinAbs > theMinSmoothCosin )
3267 // always smooth analytic EDGEs
3268 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
3269 eos._toSmooth = ! curve.IsNull();
3271 // compare tgtThick with the length of an end segment
3272 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
3273 while ( eIt->more() && !eos._toSmooth )
3275 const SMDS_MeshElement* endSeg = eIt->next();
3276 if ( endSeg->getshapeId() == (int) iS )
3279 SMESH_TNodeXYZ( endSeg->GetNode( 0 )).Distance( endSeg->GetNode( 1 ));
3280 eos._toSmooth = needSmoothing( cosinAbs, tgtThick * eV[0]->_lenFactor, segLen );
3283 if ( eos._toSmooth )
3285 eos._edgeSmoother = new _Smoother1D( curve, eos );
3287 // for ( size_t i = 0; i < eos._edges.size(); ++i )
3288 // eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
3292 data._nbShapesToSmooth += eos._toSmooth;
3296 // Reset _cosin if no smooth is allowed by the user
3297 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
3299 _EdgesOnShape& eos = edgesByGeom[iS];
3300 if ( eos._edges.empty() ) continue;
3302 if ( !eos._hyp.ToSmooth() )
3303 for ( size_t i = 0; i < eos._edges.size(); ++i )
3304 //eos._edges[i]->SetCosin( 0 ); // keep _cosin to use in limitMaxLenByCurvature()
3305 eos._edges[i]->_lenFactor = 1;
3309 // Fill _eosC1 to make that C1 FACEs and EDGEs between them to be smoothed as a whole
3311 TopTools_MapOfShape c1VV;
3313 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3315 _EdgesOnShape& eos = edgesByGeom[iS];
3316 if ( eos._edges.empty() ||
3317 eos.ShapeType() != TopAbs_FACE ||
3321 // check EDGEs of a FACE
3322 TopTools_MapOfShape checkedEE, allVV;
3323 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
3324 while ( !smQueue.empty() )
3326 SMESH_subMesh* sm = smQueue.front();
3327 smQueue.pop_front();
3328 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3329 while ( smIt->more() )
3332 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
3333 allVV.Add( sm->GetSubShape() );
3334 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
3335 !checkedEE.Add( sm->GetSubShape() ))
3338 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
3339 vector<_LayerEdge*>& eE = eoe->_edges;
3340 if ( eE.empty() || !eoe->_sWOL.IsNull() )
3343 bool isC1 = true; // check continuity along an EDGE
3344 for ( size_t i = 0; i < eE.size() && isC1; ++i )
3345 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
3349 // check that mesh faces are C1 as well
3351 gp_XYZ norm1, norm2;
3352 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
3353 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
3354 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
3356 while ( fIt->more() && isC1 )
3357 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
3358 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
3363 // add the EDGE and an adjacent FACE to _eosC1
3364 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
3365 while ( const TopoDS_Shape* face = fIt->next() )
3367 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3368 if ( !eof ) continue; // other solid
3369 if ( eos._shapeID == eof->_shapeID ) continue;
3370 if ( !eos.HasC1( eof ))
3373 eos._eosC1.push_back( eof );
3374 eof->_toSmooth = false;
3375 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3376 smQueue.push_back( eof->_subMesh );
3378 if ( !eos.HasC1( eoe ))
3380 eos._eosC1.push_back( eoe );
3381 eoe->_toSmooth = false;
3382 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3387 if ( eos._eosC1.empty() )
3390 // check VERTEXes of C1 FACEs
3391 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3392 for ( ; vIt.More(); vIt.Next() )
3394 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3395 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3398 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3399 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3400 while ( const TopoDS_Shape* face = fIt->next() )
3402 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3403 if ( !eof ) continue; // other solid
3404 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3410 eos._eosC1.push_back( eov );
3411 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3412 c1VV.Add( eov->_shape );
3416 } // fill _eosC1 of FACEs
3421 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3423 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3425 _EdgesOnShape& eov = edgesByGeom[iS];
3426 if ( eov._edges.empty() ||
3427 eov.ShapeType() != TopAbs_VERTEX ||
3428 c1VV.Contains( eov._shape ))
3430 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3432 // get directions of surrounding EDGEs
3434 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3435 while ( const TopoDS_Shape* e = fIt->next() )
3437 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3438 if ( !eoe ) continue; // other solid
3439 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V, eoe->_hyp.Get1stLayerThickness() );
3440 if ( !Precision::IsInfinite( eDir.X() ))
3441 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3444 // find EDGEs with C1 directions
3445 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3446 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3447 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3449 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3450 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3453 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3454 for ( int isJ = 0; isJ < 2; ++isJ ) // loop on [i,j]
3456 size_t k = isJ ? j : i;
3457 const TopoDS_Edge& e = TopoDS::Edge( dirOfEdges[k].first->_shape );
3458 double eLen = SMESH_Algo::EdgeLength( e );
3459 if ( eLen < maxEdgeLen )
3461 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
3462 if ( oppV.IsSame( V ))
3463 oppV = SMESH_MesherHelper::IthVertex( 1, e );
3464 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
3465 if ( !eovOpp->_edges.empty() && dirOfEdges[k].second * eovOpp->_edges[0]->_normal < 0 )
3466 eov._eosC1.push_back( dirOfEdges[k].first );
3468 dirOfEdges[k].first = 0;
3472 } // fill _eosC1 of VERTEXes
3479 //================================================================================
3481 * \brief Set up _SolidData::_edgesOnShape
3483 //================================================================================
3485 int _ViscousBuilder::makeEdgesOnShape()
3487 const int nbShapes = getMeshDS()->MaxShapeIndex();
3490 for ( size_t i = 0; i < _sdVec.size(); ++i )
3492 _SolidData& data = _sdVec[ i ];
3493 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3494 edgesByGeom.resize( nbShapes+1 );
3496 // set data of _EdgesOnShape's
3498 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
3500 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3501 while ( smIt->more() )
3504 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
3505 data._ignoreFaceIds.count( sm->GetId() ))
3508 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
3510 nbShapesWL += ( sm->GetSubShape().ShapeType() == TopAbs_FACE );
3513 if ( nbShapesWL == 0 ) // no shapes with layers in a SOLID
3516 SMESHUtils::FreeVector( edgesByGeom );
3526 //================================================================================
3528 * \brief initialize data of _EdgesOnShape
3530 //================================================================================
3532 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3536 if ( !eos._shape.IsNull() ||
3537 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3540 SMESH_MesherHelper helper( *_mesh );
3543 eos._shapeID = sm->GetId();
3544 eos._shape = sm->GetSubShape();
3545 if ( eos.ShapeType() == TopAbs_FACE )
3546 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3547 eos._toSmooth = false;
3549 eos._mapper2D = nullptr;
3552 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3553 data._shrinkShape2Shape.find( eos._shapeID );
3554 if ( s2s != data._shrinkShape2Shape.end() )
3555 eos._sWOL = s2s->second;
3557 eos._isRegularSWOL = true;
3558 if ( eos.SWOLType() == TopAbs_FACE )
3560 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3561 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3562 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3566 if ( data._hyps.size() == 1 )
3568 eos._hyp = data._hyps.back();
3572 // compute average StdMeshers_ViscousLayers parameters
3573 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3574 if ( eos.ShapeType() == TopAbs_FACE )
3576 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3577 eos._hyp = f2hyp->second;
3581 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3582 while ( const TopoDS_Shape* face = fIt->next() )
3584 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3585 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3586 eos._hyp.Add( f2hyp->second );
3592 if ( ! eos._hyp.UseSurfaceNormal() )
3594 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3596 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3597 if ( !smDS ) return;
3598 eos._faceNormals.reserve( smDS->NbElements() );
3600 double oriFactor = helper.IsReversedSubMesh( TopoDS::Face( eos._shape )) ? 1.: -1.;
3601 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3602 for ( ; eIt->more(); )
3604 const SMDS_MeshElement* face = eIt->next();
3605 gp_XYZ& norm = eos._faceNormals[face];
3606 if ( !SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
3607 norm.SetCoord( 0,0,0 );
3611 else // find EOS of adjacent FACEs
3613 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3614 while ( const TopoDS_Shape* face = fIt->next() )
3616 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3617 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3618 if ( eos._faceEOS.back()->_shape.IsNull() )
3619 // avoid using uninitialised _shapeID in GetNormal()
3620 eos._faceEOS.back()->_shapeID = faceID;
3626 //================================================================================
3628 * \brief Returns normal of a face
3630 //================================================================================
3632 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3635 _EdgesOnShape* eos = 0;
3637 if ( face->getshapeId() == _shapeID )
3643 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3644 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3645 eos = _faceEOS[ iF ];
3649 ( ok = ( eos->_faceNormals.count( face ) )))
3651 norm = eos->_faceNormals[ face ];
3655 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3656 << " on _shape #" << _shapeID );
3661 //================================================================================
3663 * \brief EdgesOnShape destructor
3665 //================================================================================
3667 _EdgesOnShape::~_EdgesOnShape()
3669 delete _edgeSmoother;
3673 //================================================================================
3675 * \brief Set data of _LayerEdge needed for smoothing
3677 //================================================================================
3679 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3681 SMESH_MesherHelper& helper,
3684 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3687 edge._maxLen = Precision::Infinite();
3690 edge._curvature = 0;
3692 edge._smooFunction = 0;
3694 // --------------------------
3695 // Compute _normal and _cosin
3696 // --------------------------
3699 edge._lenFactor = 1.;
3700 edge._normal.SetCoord(0,0,0);
3701 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3703 int totalNbFaces = 0;
3705 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3709 const bool onShrinkShape = !eos._sWOL.IsNull();
3710 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3711 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3713 // get geom FACEs the node lies on
3714 //if ( useGeometry )
3716 set<TGeomID> faceIds;
3717 if ( eos.ShapeType() == TopAbs_FACE )
3719 faceIds.insert( eos._shapeID );
3723 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3724 while ( fIt->more() )
3725 faceIds.insert( fIt->next()->getshapeId() );
3727 set<TGeomID>::iterator id = faceIds.begin();
3728 for ( ; id != faceIds.end(); ++id )
3730 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3731 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3733 F = TopoDS::Face( s );
3734 face2Norm[ totalNbFaces ].first = F;
3740 bool fromVonF = false;
3743 fromVonF = ( eos.ShapeType() == TopAbs_VERTEX &&
3744 eos.SWOLType() == TopAbs_FACE &&
3747 if ( onShrinkShape && !fromVonF ) // one of faces the node is on has no layers
3749 if ( eos.SWOLType() == TopAbs_EDGE )
3751 // inflate from VERTEX along EDGE
3752 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3753 eos._hyp.Get1stLayerThickness(), &eos._isRegularSWOL );
3755 else if ( eos.ShapeType() == TopAbs_VERTEX )
3757 // inflate from VERTEX along FACE
3758 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3759 node, helper, normOK/*, &edge._cosin*/);
3763 // inflate from EDGE along FACE
3764 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3765 node, helper, normOK);
3768 else // layers are on all FACEs of SOLID the node is on (or fromVonF)
3771 face2Norm[ totalNbFaces++ ].first = TopoDS::Face( eos._sWOL );
3774 for ( int iF = totalNbFaces - 1; iF >= 0; --iF )
3776 F = face2Norm[ iF ].first;
3777 geomNorm = getFaceNormal( node, F, helper, normOK );
3778 if ( !normOK ) continue;
3781 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3783 face2Norm[ iF ].second = geomNorm.XYZ();
3784 edge._normal += geomNorm.XYZ();
3786 if ( nbOkNorms == 0 )
3787 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3789 if ( totalNbFaces >= 3 )
3791 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces, fromVonF );
3794 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3796 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3797 edge._normal.SetCoord( 0,0,0 );
3798 for ( int iF = 0; iF < totalNbFaces - fromVonF; ++iF )
3800 const TopoDS_Face& F = face2Norm[iF].first;
3801 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3802 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3805 face2Norm[ iF ].second = geomNorm.XYZ();
3806 edge._normal += face2Norm[ iF ].second;
3811 else // !useGeometry - get _normal using surrounding mesh faces
3813 edge._normal = getWeigthedNormal( &edge );
3815 // set<TGeomID> faceIds;
3817 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3818 // while ( fIt->more() )
3820 // const SMDS_MeshElement* face = fIt->next();
3821 // if ( eos.GetNormal( face, geomNorm ))
3823 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3824 // continue; // use only one mesh face on FACE
3825 // edge._normal += geomNorm.XYZ();
3832 //if ( eos._hyp.UseSurfaceNormal() )
3834 switch ( eos.ShapeType() )
3841 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3842 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3843 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3844 edge._cosin = Cos( angle );
3847 case TopAbs_VERTEX: {
3848 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3849 gp_Vec inFaceDir = getFaceDir( face2Norm[0].first , V, node, helper, normOK );
3850 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3851 edge._cosin = Cos( angle );
3854 if ( totalNbFaces > 1 || helper.IsSeamShape( node->getshapeId() ))
3855 for ( int iF = 1; iF < totalNbFaces; ++iF )
3857 F = face2Norm[ iF ].first;
3858 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3860 if ( onShrinkShape )
3862 gp_Vec faceNorm = getFaceNormal( node, F, helper, normOK );
3863 if ( !normOK ) continue;
3864 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3866 angle = 0.5 * M_PI - faceNorm.Angle( edge._normal );
3867 if ( inFaceDir * edge._normal < 0 )
3868 angle = M_PI - angle;
3872 angle = inFaceDir.Angle( edge._normal );
3874 double cosin = Cos( angle );
3875 if ( Abs( cosin ) > Abs( edge._cosin ))
3876 edge._cosin = cosin;
3882 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3886 double normSize = edge._normal.SquareModulus();
3887 if ( normSize < numeric_limits<double>::min() )
3888 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3890 edge._normal /= sqrt( normSize );
3892 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3894 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3895 edge._nodes.resize( 1 );
3896 edge._normal.SetCoord( 0,0,0 );
3897 edge.SetMaxLen( 0 );
3900 // Set the rest data
3901 // --------------------
3903 double realLenFactor = edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3904 // if ( realLenFactor > 3 )
3907 // if ( onShrinkShape )
3909 // edge.Set( _LayerEdge::RISKY_SWOL );
3910 // edge._lenFactor = 2;
3914 // edge._lenFactor = 1;
3918 if ( onShrinkShape )
3920 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3921 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3922 sm->RemoveNode( tgtNode );
3924 // set initial position which is parameters on _sWOL in this case
3925 if ( eos.SWOLType() == TopAbs_EDGE )
3927 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3928 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3929 if ( edge._nodes.size() > 1 )
3930 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3932 else // eos.SWOLType() == TopAbs_FACE
3934 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3935 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3936 if ( edge._nodes.size() > 1 )
3937 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3940 //if ( edge._nodes.size() > 1 ) -- allow RISKY_SWOL on noShrink shape
3942 // check if an angle between a FACE with layers and SWOL is sharp,
3943 // else the edge should not inflate
3945 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3946 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3947 F = face2Norm[iF].first;
3950 geomNorm = getFaceNormal( node, F, helper, normOK );
3951 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3952 geomNorm.Reverse(); // inside the SOLID
3953 if ( geomNorm * edge._normal < -0.001 )
3955 if ( edge._nodes.size() > 1 )
3957 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3958 edge._nodes.resize( 1 );
3961 else if ( realLenFactor > 3 ) /// -- moved to SetCosin()
3962 //else if ( edge._lenFactor > 3 )
3964 edge._lenFactor = 2;
3965 edge.Set( _LayerEdge::RISKY_SWOL );
3972 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3974 if ( eos.ShapeType() == TopAbs_FACE )
3977 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3979 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3980 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3985 // Set neighbor nodes for a _LayerEdge based on EDGE
3987 if ( eos.ShapeType() == TopAbs_EDGE /*||
3988 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3990 edge._2neibors = _Factory::NewNearEdges();
3991 // target nodes instead of source ones will be set later
3997 //================================================================================
3999 * \brief Return normal to a FACE at a node
4000 * \param [in] n - node
4001 * \param [in] face - FACE
4002 * \param [in] helper - helper
4003 * \param [out] isOK - true or false
4004 * \param [in] shiftInside - to find normal at a position shifted inside the face
4005 * \return gp_XYZ - normal
4007 //================================================================================
4009 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
4010 const TopoDS_Face& face,
4011 SMESH_MesherHelper& helper,
4018 // get a shifted position
4019 gp_Pnt p = SMESH_TNodeXYZ( node );
4020 gp_XYZ shift( 0,0,0 );
4021 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
4022 switch ( S.ShapeType() ) {
4025 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
4030 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
4038 p.Translate( shift * 1e-5 );
4040 TopLoc_Location loc;
4041 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
4043 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
4045 projector.Perform( p );
4046 if ( !projector.IsDone() || projector.NbPoints() < 1 )
4052 projector.LowerDistanceParameters(U,V);
4057 uv = helper.GetNodeUV( face, node, 0, &isOK );
4063 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
4065 if ( !shiftInside &&
4066 helper.IsDegenShape( node->getshapeId() ) &&
4067 getFaceNormalAtSingularity( uv, face, helper, normal ))
4070 return normal.XYZ();
4073 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
4074 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4076 if ( pointKind == IMPOSSIBLE &&
4077 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
4079 // probably NormEstim() failed due to a too high tolerance
4080 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
4081 isOK = ( pointKind < IMPOSSIBLE );
4083 if ( pointKind < IMPOSSIBLE )
4085 if ( pointKind != REGULAR &&
4087 node->GetPosition()->GetDim() < 2 ) // FACE boundary
4089 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
4090 if ( normShift * normal.XYZ() < 0. )
4096 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
4098 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
4100 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4101 while ( fIt->more() )
4103 const SMDS_MeshElement* f = fIt->next();
4104 if ( f->getshapeId() == faceID )
4106 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
4109 TopoDS_Face ff = face;
4110 ff.Orientation( TopAbs_FORWARD );
4111 if ( helper.IsReversedSubMesh( ff ))
4118 return normal.XYZ();
4121 //================================================================================
4123 * \brief Try to get normal at a singularity of a surface basing on it's nature
4125 //================================================================================
4127 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
4128 const TopoDS_Face& face,
4129 SMESH_MesherHelper& /*helper*/,
4132 BRepAdaptor_Surface surface( face );
4134 if ( !getRovolutionAxis( surface, axis ))
4137 double f,l, d, du, dv;
4138 f = surface.FirstUParameter();
4139 l = surface.LastUParameter();
4140 d = ( uv.X() - f ) / ( l - f );
4141 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4142 f = surface.FirstVParameter();
4143 l = surface.LastVParameter();
4144 d = ( uv.Y() - f ) / ( l - f );
4145 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4148 gp_Pnt2d testUV = uv;
4149 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4151 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
4152 for ( int iLoop = 0; true ; ++iLoop )
4154 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
4155 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
4162 if ( axis * refDir < 0. )
4170 //================================================================================
4172 * \brief Return a normal at a node weighted with angles taken by faces
4174 //================================================================================
4176 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
4178 const SMDS_MeshNode* n = edge->_nodes[0];
4180 gp_XYZ resNorm(0,0,0);
4181 SMESH_TNodeXYZ p0( n ), pP, pN;
4182 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
4184 pP.Set( edge->_simplices[i]._nPrev );
4185 pN.Set( edge->_simplices[i]._nNext );
4186 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
4187 double l0P = v0P.SquareMagnitude();
4188 double l0N = v0N.SquareMagnitude();
4189 double lPN = vPN.SquareMagnitude();
4190 if ( l0P < std::numeric_limits<double>::min() ||
4191 l0N < std::numeric_limits<double>::min() ||
4192 lPN < std::numeric_limits<double>::min() )
4194 double lNorm = norm.SquareMagnitude();
4195 double sin2 = lNorm / l0P / l0N;
4196 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
4198 double weight = sin2 * angle / lPN;
4199 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
4205 //================================================================================
4207 * \brief Return a normal at a node by getting a common point of offset planes
4208 * defined by the FACE normals
4210 //================================================================================
4212 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
4213 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
4217 SMESH_TNodeXYZ p0 = edge->_nodes[0];
4219 gp_XYZ resNorm(0,0,0);
4220 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
4221 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
4223 for ( int i = 0; i < nbFaces; ++i )
4224 resNorm += f2Normal[i].second;
4228 // prepare _OffsetPlane's
4229 vector< _OffsetPlane > pln( nbFaces );
4230 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4232 pln[i]._faceIndex = i;
4233 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
4237 pln[ nbFaces - 1 ]._faceIndex = nbFaces - 1;
4238 pln[ nbFaces - 1 ]._plane = gp_Pln( p0, f2Normal[ nbFaces - 1 ].second );
4241 // intersect neighboring OffsetPlane's
4242 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
4243 while ( const TopoDS_Shape* edge = edgeIt->next() )
4245 int f1 = -1, f2 = -1;
4246 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
4247 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
4248 (( f1 < 0 ) ? f1 : f2 ) = i;
4251 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ], TopoDS::Edge( *edge ), TopoDS::Vertex( V ));
4254 // get a common point
4255 gp_XYZ commonPnt( 0, 0, 0 );
4258 for ( int i = 0; i < nbFaces; ++i )
4260 commonPnt += pln[ i ].GetCommonPoint( isPointFound, TopoDS::Vertex( V ));
4261 nbPoints += isPointFound;
4263 gp_XYZ wgtNorm = getWeigthedNormal( edge );
4264 if ( nbPoints == 0 )
4267 commonPnt /= nbPoints;
4268 resNorm = commonPnt - p0;
4272 // choose the best among resNorm and wgtNorm
4273 resNorm.Normalize();
4274 wgtNorm.Normalize();
4275 double resMinDot = std::numeric_limits<double>::max();
4276 double wgtMinDot = std::numeric_limits<double>::max();
4277 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4279 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
4280 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
4283 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
4285 edge->Set( _LayerEdge::MULTI_NORMAL );
4288 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
4291 //================================================================================
4293 * \brief Compute line of intersection of 2 planes
4295 //================================================================================
4297 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln,
4298 const TopoDS_Edge& E,
4299 const TopoDS_Vertex& V )
4301 int iNext = bool( _faceIndexNext[0] >= 0 );
4302 _faceIndexNext[ iNext ] = pln._faceIndex;
4304 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
4305 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
4307 gp_XYZ lineDir = n1 ^ n2;
4309 double x = Abs( lineDir.X() );
4310 double y = Abs( lineDir.Y() );
4311 double z = Abs( lineDir.Z() );
4313 int cooMax; // max coordinate
4315 if (x > z) cooMax = 1;
4319 if (y > z) cooMax = 2;
4324 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
4326 // parallel planes - intersection is an offset of the common EDGE
4327 gp_Pnt p = BRep_Tool::Pnt( V );
4328 linePos = 0.5 * (( p.XYZ() + n1 ) + ( p.XYZ() + n2 ));
4329 lineDir = getEdgeDir( E, V, 0.1 * SMESH_Algo::EdgeLength( E ));
4333 // the constants in the 2 plane equations
4334 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
4335 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
4340 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
4341 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
4344 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
4346 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
4349 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
4350 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
4354 gp_Lin& line = _lines[ iNext ];
4355 line.SetDirection( lineDir );
4356 line.SetLocation ( linePos );
4358 _isLineOK[ iNext ] = true;
4361 iNext = bool( pln._faceIndexNext[0] >= 0 );
4362 pln._lines [ iNext ] = line;
4363 pln._faceIndexNext[ iNext ] = this->_faceIndex;
4364 pln._isLineOK [ iNext ] = true;
4367 //================================================================================
4369 * \brief Computes intersection point of two _lines
4371 //================================================================================
4373 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound,
4374 const TopoDS_Vertex & V) const
4379 if ( NbLines() == 2 )
4381 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
4382 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
4383 if ( Abs( dot01 ) > 0.05 )
4385 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
4386 double u1 = - ( lPerp0 * l0l1 ) / dot01;
4387 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
4392 gp_Pnt pV ( BRep_Tool::Pnt( V ));
4393 gp_Vec lv0( _lines[0].Location(), pV ), lv1(_lines[1].Location(), pV );
4394 double dot0( lv0 * _lines[0].Direction() ), dot1( lv1 * _lines[1].Direction() );
4395 p += 0.5 * ( _lines[0].Location().XYZ() + _lines[0].Direction().XYZ() * dot0 );
4396 p += 0.5 * ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * dot1 );
4404 //================================================================================
4406 * \brief Find 2 neighbor nodes of a node on EDGE
4408 //================================================================================
4410 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
4411 const SMDS_MeshNode*& n1,
4412 const SMDS_MeshNode*& n2,
4416 const SMDS_MeshNode* node = edge->_nodes[0];
4417 const int shapeInd = eos._shapeID;
4418 SMESHDS_SubMesh* edgeSM = 0;
4419 if ( eos.ShapeType() == TopAbs_EDGE )
4421 edgeSM = eos._subMesh->GetSubMeshDS();
4422 if ( !edgeSM || edgeSM->NbElements() == 0 )
4423 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
4427 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
4428 while ( eIt->more() && !n2 )
4430 const SMDS_MeshElement* e = eIt->next();
4431 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
4432 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
4435 if (!edgeSM->Contains(e)) continue;
4439 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
4440 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
4442 ( iN++ ? n2 : n1 ) = nNeibor;
4445 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
4449 //================================================================================
4451 * \brief Create _Curvature
4453 //================================================================================
4455 _Curvature* _Curvature::New( double avgNormProj, double avgDist )
4457 // double _r; // radius
4458 // double _k; // factor to correct node smoothed position
4459 // double _h2lenRatio; // avgNormProj / (2*avgDist)
4460 // gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
4463 if ( fabs( avgNormProj / avgDist ) > 1./200 )
4465 c = _Factory::NewCurvature();
4466 c->_r = avgDist * avgDist / avgNormProj;
4467 c->_k = avgDist * avgDist / c->_r / c->_r;
4468 //c->_k = avgNormProj / c->_r;
4469 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
4470 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
4472 c->_uv.SetCoord( 0., 0. );
4477 //================================================================================
4479 * \brief Set _curvature and _2neibors->_plnNorm by 2 neighbor nodes residing the same EDGE
4481 //================================================================================
4483 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
4484 const SMDS_MeshNode* n2,
4485 const _EdgesOnShape& eos,
4486 SMESH_MesherHelper& helper)
4488 if ( eos.ShapeType() != TopAbs_EDGE )
4490 if ( _curvature && Is( SMOOTHED_C1 ))
4493 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
4494 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
4495 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
4499 double sumLen = vec1.Modulus() + vec2.Modulus();
4500 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
4501 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
4502 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
4503 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
4504 _curvature = _Curvature::New( avgNormProj, avgLen );
4505 // if ( _curvature )
4506 // debugMsg( _nodes[0]->GetID()
4507 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
4508 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
4509 // << _curvature->lenDelta(0) );
4513 if ( eos._sWOL.IsNull() )
4515 TopoDS_Edge E = TopoDS::Edge( eos._shape );
4516 // if ( SMESH_Algo::isDegenerated( E ))
4518 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
4519 gp_XYZ plnNorm = dirE ^ _normal;
4520 double proj0 = plnNorm * vec1;
4521 double proj1 = plnNorm * vec2;
4522 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
4524 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
4525 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
4530 //================================================================================
4532 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4533 * this and the other _LayerEdge are inflated along a FACE or an EDGE
4535 //================================================================================
4537 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4539 SMESH_MesherHelper& helper )
4541 _nodes = other._nodes;
4542 _normal = other._normal;
4544 _lenFactor = other._lenFactor;
4545 _cosin = other._cosin;
4546 _2neibors = other._2neibors;
4547 _curvature = other._curvature;
4548 _2neibors = other._2neibors;
4549 _maxLen = Precision::Infinite();//other._maxLen;
4553 gp_XYZ lastPos( 0,0,0 );
4554 if ( eos.SWOLType() == TopAbs_EDGE )
4556 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4557 _pos.push_back( gp_XYZ( u, 0, 0));
4559 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4564 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4565 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4567 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4568 lastPos.SetX( uv.X() );
4569 lastPos.SetY( uv.Y() );
4574 //================================================================================
4576 * \brief Set _cosin and _lenFactor
4578 //================================================================================
4580 double _LayerEdge::SetCosin( double cosin )
4583 cosin = Abs( _cosin );
4584 //_lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4585 double realLenFactor;
4586 if ( cosin < 1.-1e-12 )
4588 _lenFactor = realLenFactor = 1./sqrt(1-cosin*cosin );
4593 realLenFactor = Precision::Infinite();
4596 return realLenFactor;
4599 //================================================================================
4601 * \brief Check if another _LayerEdge is a neighbor on EDGE
4603 //================================================================================
4605 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4607 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4608 ( edge->_2neibors && edge->_2neibors->include( this )));
4611 //================================================================================
4613 * \brief Fills a vector<_Simplex >
4615 //================================================================================
4617 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4618 vector<_Simplex>& simplices,
4619 const set<TGeomID>& ingnoreShapes,
4620 const _SolidData* dataToCheckOri,
4624 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4625 while ( fIt->more() )
4627 const SMDS_MeshElement* f = fIt->next();
4628 const TGeomID shapeInd = f->getshapeId();
4629 if ( ingnoreShapes.count( shapeInd )) continue;
4630 const int nbNodes = f->NbCornerNodes();
4631 const int srcInd = f->GetNodeIndex( node );
4632 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4633 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4634 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4635 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4636 std::swap( nPrev, nNext );
4637 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4641 SortSimplices( simplices );
4644 //================================================================================
4646 * \brief Set neighbor simplices side by side
4648 //================================================================================
4650 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4652 vector<_Simplex> sortedSimplices( simplices.size() );
4653 sortedSimplices[0] = simplices[0];
4655 for ( size_t i = 1; i < simplices.size(); ++i )
4657 for ( size_t j = 1; j < simplices.size(); ++j )
4658 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4660 sortedSimplices[i] = simplices[j];
4665 if ( nbFound == simplices.size() - 1 )
4666 simplices.swap( sortedSimplices );
4669 //================================================================================
4671 * \brief DEBUG. Create groups containing temporary data of _LayerEdge's
4673 //================================================================================
4675 void _ViscousBuilder::makeGroupOfLE()
4677 if (!SALOME::VerbosityActivated())
4680 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4682 if ( _sdVec[i]._n2eMap.empty() ) continue;
4684 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4685 TNode2Edge::iterator n2e;
4686 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4688 _LayerEdge* le = n2e->second;
4689 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4690 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4691 // << ", " << le->_nodes[iN]->GetID() <<"])");
4693 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4694 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4699 dumpFunction( SMESH_Comment("makeNormals") << i );
4700 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4702 _LayerEdge* edge = n2e->second;
4703 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4704 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4705 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4706 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4710 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4711 dumpCmd( "faceId1 = mesh.NbElements()" );
4712 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4713 for ( ; fExp.More(); fExp.Next() )
4715 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4717 if ( sm->NbElements() == 0 ) continue;
4718 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4719 while ( fIt->more())
4721 const SMDS_MeshElement* e = fIt->next();
4722 SMESH_Comment cmd("mesh.AddFace([");
4723 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4724 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4729 dumpCmd( "faceId2 = mesh.NbElements()" );
4730 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4731 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4732 << "'%s-%s' % (faceId1+1, faceId2))");
4737 //================================================================================
4739 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4741 //================================================================================
4743 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4745 data._geomSize = Precision::Infinite();
4746 double intersecDist;
4747 const SMDS_MeshElement* face;
4748 SMESH_MesherHelper helper( *_mesh );
4750 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4751 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4752 data._proxyMesh->GetFaces( data._solid )));
4754 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4756 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4757 if ( eos._edges.empty() )
4759 // get neighbor faces, intersection with which should not be considered since
4760 // collisions are avoided by means of smoothing
4761 set< TGeomID > neighborFaces;
4762 if ( eos._hyp.ToSmooth() )
4764 SMESH_subMeshIteratorPtr subIt =
4765 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4766 while ( subIt->more() )
4768 SMESH_subMesh* sm = subIt->next();
4769 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4770 while ( const TopoDS_Shape* face = fIt->next() )
4771 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4774 // find intersections
4775 double thinkness = eos._hyp.GetTotalThickness();
4776 for ( size_t i = 0; i < eos._edges.size(); ++i )
4778 if ( eos._edges[i]->_nodes.size() < 2 ) continue;
4779 eos._edges[i]->SetMaxLen( thinkness );
4780 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4781 if ( intersecDist > 0 && face )
4783 data._geomSize = Min( data._geomSize, intersecDist );
4784 if ( !neighborFaces.count( face->getshapeId() ))
4785 eos[i]->SetMaxLen( Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. )));
4790 data._maxThickness = 0;
4791 data._minThickness = 1e100;
4792 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
4793 for ( ; hyp != data._hyps.end(); ++hyp )
4795 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
4796 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
4799 // Limit inflation step size by geometry size found by intersecting
4800 // normals of _LayerEdge's with mesh faces
4801 if ( data._stepSize > 0.3 * data._geomSize )
4802 limitStepSize( data, 0.3 * data._geomSize );
4804 if ( data._stepSize > data._minThickness )
4805 limitStepSize( data, data._minThickness );
4808 // -------------------------------------------------------------------------
4809 // Detect _LayerEdge which can't intersect with opposite or neighbor layer,
4810 // so no need in detecting intersection at each inflation step
4811 // -------------------------------------------------------------------------
4813 int nbSteps = data._maxThickness / data._stepSize;
4814 if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 )
4817 vector< const SMDS_MeshElement* > closeFaces;
4820 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4822 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4823 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
4826 for ( size_t i = 0; i < eos.size(); ++i )
4828 SMESH_NodeXYZ p( eos[i]->_nodes[0] );
4829 double radius = data._maxThickness + 2 * eos[i]->_maxLen;
4831 searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces );
4833 bool toIgnore = true;
4834 for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF )
4835 if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID ||
4836 data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() ))))
4838 // check if a _LayerEdge will inflate in a direction opposite to a direction
4839 // toward a close face
4840 bool allBehind = true;
4841 for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN )
4843 SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN ));
4844 allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize );
4846 toIgnore = allBehind;
4850 if ( toIgnore ) // no need to detect intersection
4852 eos[i]->Set( _LayerEdge::INTERSECTED );
4858 debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected );
4863 //================================================================================
4865 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4867 //================================================================================
4869 bool _ViscousBuilder::inflate(_SolidData& data)
4871 SMESH_MesherHelper helper( *_mesh );
4873 const double tgtThick = data._maxThickness;
4875 if ( data._stepSize < 1. )
4876 data._epsilon = data._stepSize * 1e-7;
4878 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4881 findCollisionEdges( data, helper );
4883 limitMaxLenByCurvature( data, helper );
4887 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4888 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4889 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4890 data._edgesOnShape[i]._edges.size() > 0 &&
4891 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4893 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4894 data._edgesOnShape[i]._edges[0]->Block( data );
4897 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4899 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4900 int nbSteps = 0, nbRepeats = 0;
4901 while ( avgThick < 0.99 )
4903 // new target length
4904 double prevThick = curThick;
4905 curThick += data._stepSize;
4906 if ( curThick > tgtThick )
4908 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4912 double stepSize = curThick - prevThick;
4913 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4915 // Elongate _LayerEdge's
4916 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4917 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4919 _EdgesOnShape& eos = data._edgesOnShape[iS];
4920 if ( eos._edges.empty() ) continue;
4922 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4923 for ( size_t i = 0; i < eos._edges.size(); ++i )
4925 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4930 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4933 // Improve and check quality
4934 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4938 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4939 debugMsg("NOT INVALIDATED STEP!");
4940 return error("Smoothing failed", data._index);
4942 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4943 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4945 _EdgesOnShape& eos = data._edgesOnShape[iS];
4946 for ( size_t i = 0; i < eos._edges.size(); ++i )
4947 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4951 break; // no more inflating possible
4955 // Evaluate achieved thickness
4957 int nbActiveEdges = 0;
4958 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4960 _EdgesOnShape& eos = data._edgesOnShape[iS];
4961 if ( eos._edges.empty() ) continue;
4963 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4964 for ( size_t i = 0; i < eos._edges.size(); ++i )
4966 if ( eos._edges[i]->_nodes.size() > 1 )
4967 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4970 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4973 avgThick /= data._n2eMap.size();
4974 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4976 #ifdef BLOCK_INFLATION
4977 if ( nbActiveEdges == 0 )
4979 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4983 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4985 debugMsg( "-- Stop inflation since "
4986 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4987 << tgtThick * avgThick << " ) * " << safeFactor );
4993 limitStepSize( data, 0.25 * distToIntersection );
4994 if ( data._stepSizeNodes[0] )
4995 data._stepSize = data._stepSizeCoeff *
4996 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4998 } // while ( avgThick < 0.99 )
5001 return error("failed at the very first inflation step", data._index);
5003 if ( avgThick < 0.99 )
5005 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
5007 data._proxyMesh->_warning.reset
5008 ( new SMESH_ComputeError (COMPERR_WARNING,
5009 SMESH_Comment("Thickness ") << tgtThick <<
5010 " of viscous layers not reached,"
5011 " average reached thickness is " << avgThick*tgtThick));
5015 // Restore position of src nodes moved by inflation on _noShrinkShapes
5016 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
5017 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5019 _EdgesOnShape& eos = data._edgesOnShape[iS];
5020 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
5021 for ( size_t i = 0; i < eos._edges.size(); ++i )
5023 restoreNoShrink( *eos._edges[ i ] );
5028 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
5031 //================================================================================
5033 * \brief Improve quality of layer inner surface and check intersection
5035 //================================================================================
5037 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
5039 double & distToIntersection)
5041 if ( data._nbShapesToSmooth == 0 )
5042 return true; // no shapes needing smoothing
5044 bool moved, improved;
5046 vector< _LayerEdge* > movedEdges, badEdges;
5047 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
5048 vector< bool > isConcaveFace;
5050 SMESH_MesherHelper helper(*_mesh);
5051 Handle(ShapeAnalysis_Surface) surface;
5054 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
5056 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
5058 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5060 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5061 if ( !eos._toSmooth ||
5062 eos.ShapeType() != shapeType ||
5063 eos._edges.empty() )
5066 // already smoothed?
5067 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
5068 // if ( !toSmooth ) continue;
5070 if ( !eos._hyp.ToSmooth() )
5072 // smooth disabled by the user; check validy only
5073 if ( !isFace ) continue;
5075 for ( size_t i = 0; i < eos._edges.size(); ++i )
5077 _LayerEdge* edge = eos._edges[i];
5078 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
5079 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
5081 // debugMsg( "-- Stop inflation. Bad simplex ("
5082 // << " "<< edge->_nodes[0]->GetID()
5083 // << " "<< edge->_nodes.back()->GetID()
5084 // << " "<< edge->_simplices[iF]._nPrev->GetID()
5085 // << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
5087 badEdges.push_back( edge );
5090 if ( !badEdges.empty() )
5094 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5098 continue; // goto the next EDGE or FACE
5102 if ( eos.SWOLType() == TopAbs_FACE )
5104 if ( !F.IsSame( eos._sWOL )) {
5105 F = TopoDS::Face( eos._sWOL );
5106 helper.SetSubShape( F );
5107 surface = helper.GetSurface( F );
5112 F.Nullify(); surface.Nullify();
5114 const TGeomID sInd = eos._shapeID;
5116 // perform smoothing
5118 if ( eos.ShapeType() == TopAbs_EDGE )
5120 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
5122 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
5124 // smooth on EDGE's (normally we should not get here)
5128 for ( size_t i = 0; i < eos._edges.size(); ++i )
5130 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
5132 dumpCmd( SMESH_Comment("# end step ")<<step);
5134 while ( moved && step++ < 5 );
5139 else // smooth on FACE
5142 eosC1.push_back( & eos );
5143 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
5146 isConcaveFace.resize( eosC1.size() );
5147 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5149 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
5151 if ( eosC1[ iEOS ]->_mapper2D )
5153 // compute node position by boundary node position in structured mesh
5154 dumpFunction(SMESH_Comment("map2dS")<<data._index<<"_Fa"<<eos._shapeID
5155 <<"_InfStep"<<infStep);
5157 eosC1[ iEOS ]->_mapper2D->ComputeNodePositions();
5159 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5160 le->_pos.back() = SMESH_NodeXYZ( le->_nodes.back() );
5166 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5167 if ( le->Is( _LayerEdge::MOVED ) ||
5168 le->Is( _LayerEdge::NEAR_BOUNDARY ))
5169 movedEdges.push_back( le );
5171 makeOffsetSurface( *eosC1[ iEOS ], helper );
5174 int step = 0, stepLimit = 5, nbBad = 0;
5175 while (( ++step <= stepLimit ) || improved )
5177 int oldBadNb = nbBad;
5180 #ifdef INCREMENTAL_SMOOTH
5181 // smooth moved only
5182 if ( !movedEdges.empty() )
5183 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5184 <<"_InfStep"<<infStep<<"_"<<step); // debug
5185 bool findBest = false; // ( step == stepLimit );
5186 for ( size_t i = 0; i < movedEdges.size(); ++i )
5188 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
5189 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
5190 badEdges.push_back( movedEdges[i] );
5194 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5195 <<"_InfStep"<<infStep<<"_"<<step); // debug
5196 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
5197 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5199 if ( eosC1[ iEOS ]->_mapper2D )
5201 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
5202 for ( size_t i = 0; i < edges.size(); ++i )
5204 edges[i]->Unset( _LayerEdge::SMOOTHED );
5205 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
5206 badEdges.push_back( eos._edges[i] );
5210 nbBad = badEdges.size();
5213 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5215 if ( !badEdges.empty() && step >= stepLimit / 2 )
5217 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
5220 // resolve hard smoothing situation around concave VERTEXes
5221 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5223 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
5224 for ( size_t i = 0; i < eosCoVe.size(); ++i )
5225 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
5228 // look for the best smooth of _LayerEdge's neighboring badEdges
5230 for ( size_t i = 0; i < badEdges.size(); ++i )
5232 _LayerEdge* ledge = badEdges[i];
5233 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
5235 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
5236 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
5238 ledge->Unset( _LayerEdge::SMOOTHED );
5239 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
5241 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5244 if ( nbBad == oldBadNb &&
5246 step < stepLimit ) // smooth w/o check of validity
5249 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
5250 <<"_InfStep"<<infStep<<"_"<<step); // debug
5251 for ( size_t i = 0; i < movedEdges.size(); ++i )
5253 movedEdges[i]->SmoothWoCheck();
5255 if ( stepLimit < 9 )
5259 improved = ( nbBad < oldBadNb );
5263 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
5264 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5266 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1, step, /*moveAll=*/step == 1 );
5269 } // smoothing steps
5271 // project -- to prevent intersections or to fix bad simplices
5272 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5274 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
5275 putOnOffsetSurface( *eosC1[ iEOS ], -infStep, eosC1 );
5278 //if ( !badEdges.empty() )
5281 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5283 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5285 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5287 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5288 edge->CheckNeiborsOnBoundary( & badEdges );
5289 if (( nbBad > 0 ) ||
5290 ( edge->Is( _LayerEdge::BLOCKED ) && edge->Is( _LayerEdge::NEAR_BOUNDARY )))
5292 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5293 gp_XYZ prevXYZ = edge->PrevCheckPos();
5294 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5295 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5297 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
5298 << " "<< tgtXYZ._node->GetID()
5299 << " "<< edge->_simplices[j]._nPrev->GetID()
5300 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5301 badEdges.push_back( edge );
5308 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5309 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5315 } // // smooth on FACE's
5317 } // smooth on [ EDGEs, FACEs ]
5319 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
5321 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5323 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5324 if ( eos.ShapeType() == TopAbs_FACE ||
5325 eos._edges.empty() ||
5326 !eos._sWOL.IsNull() )
5330 for ( size_t i = 0; i < eos._edges.size(); ++i )
5332 _LayerEdge* edge = eos._edges[i];
5333 if ( edge->_nodes.size() < 2 ) continue;
5334 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5335 //SMESH_TNodeXYZ prevXYZ = edge->_nodes[0];
5336 gp_XYZ prevXYZ = edge->PrevCheckPos( &eos );
5337 //const gp_XYZ& prevXYZ = edge->PrevPos();
5338 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5339 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5341 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
5342 << " "<< tgtXYZ._node->GetID()
5343 << " "<< edge->_simplices[j]._nPrev->GetID()
5344 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5345 badEdges.push_back( edge );
5350 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5352 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5358 // Check if the last segments of _LayerEdge intersects 2D elements;
5359 // checked elements are either temporary faces or faces on surfaces w/o the layers
5361 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
5362 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
5363 data._proxyMesh->GetFaces( data._solid )) );
5365 #ifdef BLOCK_INFLATION
5366 const bool toBlockInfaltion = true;
5368 const bool toBlockInfaltion = false;
5370 distToIntersection = Precision::Infinite();
5372 const SMDS_MeshElement* intFace = 0;
5373 const SMDS_MeshElement* closestFace = 0;
5375 bool is1stBlocked = true; // dbg
5376 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5378 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5379 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
5381 for ( size_t i = 0; i < eos._edges.size(); ++i )
5383 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
5384 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
5386 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5389 // commented due to "Illegal hash-positionPosition" error in NETGEN
5390 // on Debian60 on viscous_layers_01/B2 case
5391 // Collision; try to deflate _LayerEdge's causing it
5392 // badEdges.clear();
5393 // badEdges.push_back( eos._edges[i] );
5394 // eosC1[0] = & eos;
5395 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5399 // badEdges.clear();
5400 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5402 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5404 // const SMDS_MeshElement* srcFace =
5405 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
5406 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5407 // while ( nIt->more() )
5409 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5410 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5411 // if ( n2e != data._n2eMap.end() )
5412 // badEdges.push_back( n2e->second );
5415 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5420 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5427 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
5432 const bool isShorterDist = ( distToIntersection > dist );
5433 if ( toBlockInfaltion || isShorterDist )
5435 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
5436 // lying on this _ConvexFace
5437 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
5438 if ( convFace->_isTooCurved && convFace->_subIdToEOS.count ( eos._shapeID ))
5441 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
5442 // ( avoid limiting the thickness on the case of issue 22576)
5443 if ( intFace->getshapeId() == eos._shapeID )
5446 // ignore intersection with intFace of an adjacent FACE
5447 if ( dist > 0.01 * eos._edges[i]->_len )
5449 bool toIgnore = false;
5450 if ( eos._toSmooth )
5452 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
5453 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
5455 TopExp_Explorer sub( eos._shape,
5456 eos.ShapeType() == TopAbs_FACE ? TopAbs_EDGE : TopAbs_VERTEX );
5457 for ( ; !toIgnore && sub.More(); sub.Next() )
5458 // is adjacent - has a common EDGE or VERTEX
5459 toIgnore = ( helper.IsSubShape( sub.Current(), S ));
5461 if ( toIgnore ) // check angle between normals
5464 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
5465 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
5469 if ( !toIgnore ) // check if the edge is a neighbor of intFace
5471 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
5473 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
5474 toIgnore = ( nInd >= 0 );
5481 // intersection not ignored
5484 if ( eos._edges[i]->_maxLen < 0.99 * eos._hyp.GetTotalThickness() ) // limited length
5485 minDist = eos._edges[i]->_len * theThickToIntersection;
5487 if ( toBlockInfaltion && dist < minDist )
5489 if ( is1stBlocked ) { is1stBlocked = false; // debug
5490 dumpFunction(SMESH_Comment("blockIntersected") <<data._index<<"_InfStep"<<infStep);
5492 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
5493 eos._edges[i]->Block( data ); // not to inflate
5495 //if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5497 // block _LayerEdge's, on top of which intFace is
5498 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5500 const SMDS_MeshElement* srcFace = f->_srcFace;
5501 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5502 while ( nIt->more() )
5504 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5505 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5506 if ( n2e != data._n2eMap.end() )
5507 n2e->second->Block( data );
5513 if ( isShorterDist )
5515 distToIntersection = dist;
5517 closestFace = intFace;
5520 } // if ( toBlockInfaltion || isShorterDist )
5521 } // loop on eos._edges
5522 } // loop on data._edgesOnShape
5524 if ( !is1stBlocked )
5529 if ( closestFace && le )
5532 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
5533 cout << "#Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
5534 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
5535 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
5536 << ") distance = " << distToIntersection<< endl;
5543 //================================================================================
5545 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5546 * \param [in,out] badSmooEdges - _LayerEdge's to fix
5547 * \return int - resulting nb of bad _LayerEdge's
5549 //================================================================================
5551 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
5552 SMESH_MesherHelper& helper,
5553 vector< _LayerEdge* >& badSmooEdges,
5554 vector< _EdgesOnShape* >& eosC1,
5557 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
5559 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
5562 INVALIDATED = _LayerEdge::UNUSED_FLAG,
5563 TO_INVALIDATE = _LayerEdge::UNUSED_FLAG * 2,
5564 ADDED = _LayerEdge::UNUSED_FLAG * 4
5566 data.UnmarkEdges( TO_INVALIDATE & INVALIDATED & ADDED );
5569 bool haveInvalidated = true;
5570 while ( haveInvalidated )
5572 haveInvalidated = false;
5573 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5575 _LayerEdge* edge = badSmooEdges[i];
5576 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5578 bool invalidated = false;
5579 if ( edge->Is( TO_INVALIDATE ) && edge->NbSteps() > 1 )
5581 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5582 edge->Block( data );
5583 edge->Set( INVALIDATED );
5584 edge->Unset( TO_INVALIDATE );
5586 haveInvalidated = true;
5589 // look for _LayerEdge's of bad _simplices
5591 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5592 gp_XYZ prevXYZ1 = edge->PrevCheckPos( eos );
5593 //const gp_XYZ& prevXYZ2 = edge->PrevPos();
5594 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5596 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol ))/* &&
5597 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5601 _LayerEdge* ee[2] = { 0,0 };
5602 for ( size_t iN = 0; iN < edge->_neibors.size() && !ee[1] ; ++iN )
5603 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
5604 ee[ ee[0] != 0 ] = edge->_neibors[iN];
5606 int maxNbSteps = Max( ee[0]->NbSteps(), ee[1]->NbSteps() );
5607 while ( maxNbSteps > edge->NbSteps() && isBad )
5610 for ( int iE = 0; iE < 2; ++iE )
5612 if ( ee[ iE ]->NbSteps() > maxNbSteps &&
5613 ee[ iE ]->NbSteps() > 1 )
5615 _EdgesOnShape* eos = data.GetShapeEdges( ee[ iE ] );
5616 ee[ iE ]->InvalidateStep( ee[ iE ]->NbSteps(), *eos, /*restoreLength=*/true );
5617 ee[ iE ]->Block( data );
5618 ee[ iE ]->Set( INVALIDATED );
5619 haveInvalidated = true;
5622 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) /*&&
5623 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5627 if ( !ee[0]->Is( ADDED )) badSmooEdges.push_back( ee[0] );
5628 if ( !ee[1]->Is( ADDED )) badSmooEdges.push_back( ee[1] );
5629 ee[0]->Set( ADDED );
5630 ee[1]->Set( ADDED );
5633 ee[0]->Set( TO_INVALIDATE );
5634 ee[1]->Set( TO_INVALIDATE );
5638 if ( !invalidated && nbBad > 0 && edge->NbSteps() > 1 )
5640 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5641 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5642 edge->Block( data );
5643 edge->Set( INVALIDATED );
5644 edge->Unset( TO_INVALIDATE );
5645 haveInvalidated = true;
5647 } // loop on badSmooEdges
5648 } // while ( haveInvalidated )
5650 // re-smooth on analytical EDGEs
5651 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5653 _LayerEdge* edge = badSmooEdges[i];
5654 if ( !edge->Is( INVALIDATED )) continue;
5656 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5657 if ( eos->ShapeType() == TopAbs_VERTEX )
5659 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
5660 while ( const TopoDS_Shape* e = eIt->next() )
5661 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
5662 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
5664 // TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
5665 // if ( eoe->SWOLType() == TopAbs_FACE ) {
5666 // F = TopoDS::Face( eoe->_sWOL );
5667 // surface = helper.GetSurface( F );
5669 // eoe->_edgeSmoother->Perform( data, surface, F, helper );
5670 eoe->_edgeSmoother->_anaCurve.Nullify();
5676 // check result of invalidation
5679 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5681 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5683 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5684 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5685 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5686 gp_XYZ prevXYZ = edge->PrevCheckPos( eosC1[ iEOS ]);
5687 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5688 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5691 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
5692 << " "<< tgtXYZ._node->GetID()
5693 << " "<< edge->_simplices[j]._nPrev->GetID()
5694 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5703 //================================================================================
5705 * \brief Create an offset surface
5707 //================================================================================
5709 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
5711 if ( eos._offsetSurf.IsNull() ||
5712 eos._edgeForOffset == 0 ||
5713 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5716 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
5719 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
5720 /*gp_Pnt2d uv=*/baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
5721 eos._offsetValue = baseSurface->Gap();
5723 eos._offsetSurf.Nullify();
5727 BRepOffsetAPI_MakeOffsetShape offsetMaker;
5728 offsetMaker.PerformByJoin( eos._shape, -eos._offsetValue, Precision::Confusion() );
5729 if ( !offsetMaker.IsDone() ) return;
5731 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
5732 if ( !fExp.More() ) return;
5734 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5735 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5736 if ( surf.IsNull() ) return;
5738 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5740 catch ( Standard_Failure& )
5745 //================================================================================
5747 * \brief Put nodes of a curved FACE to its offset surface
5749 //================================================================================
5751 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5753 vector< _EdgesOnShape* >& eosC1,
5757 _EdgesOnShape * eof = & eos;
5758 if ( eos.ShapeType() != TopAbs_FACE ) // eos is a boundary of C1 FACE, look for the FACE eos
5761 for ( size_t i = 0; i < eosC1.size() && !eof; ++i )
5763 if ( eosC1[i]->_offsetSurf.IsNull() ||
5764 eosC1[i]->ShapeType() != TopAbs_FACE ||
5765 eosC1[i]->_edgeForOffset == 0 ||
5766 eosC1[i]->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5768 if ( SMESH_MesherHelper::IsSubShape( eos._shape, eosC1[i]->_shape ))
5773 eof->_offsetSurf.IsNull() ||
5774 eof->ShapeType() != TopAbs_FACE ||
5775 eof->_edgeForOffset == 0 ||
5776 eof->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5779 double preci = BRep_Tool::Tolerance( TopoDS::Face( eof->_shape )), vol;
5780 bool neighborHasRiskySWOL = false;
5781 for ( size_t i = 0; i < eos._edges.size(); ++i )
5783 _LayerEdge* edge = eos._edges[i];
5784 edge->Unset( _LayerEdge::MARKED );
5785 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5787 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5789 if ( !edge->Is( _LayerEdge::UPD_NORMAL_CONV ))
5792 else if ( moveAll == _LayerEdge::RISKY_SWOL )
5794 if ( !edge->Is( _LayerEdge::RISKY_SWOL ) ||
5798 else if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5801 int nbBlockedAround = 0;
5802 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5804 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5805 if ( edge->_neibors[iN]->Is( _LayerEdge::RISKY_SWOL ) &&
5806 edge->_neibors[iN]->_cosin > 0 )
5807 neighborHasRiskySWOL = true;
5809 if ( nbBlockedAround > 1 )
5812 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5813 gp_Pnt2d uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5814 if ( eof->_offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5815 edge->_curvature->_uv = uv;
5816 if ( eof->_offsetSurf->Gap() < 10 * preci ) continue; // same pos
5818 gp_XYZ newP = eof->_offsetSurf->Value( uv ).XYZ();
5819 gp_XYZ prevP = edge->PrevCheckPos();
5822 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5824 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5828 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5829 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5830 edge->_pos.back() = newP;
5832 edge->Set( _LayerEdge::MARKED );
5833 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5835 edge->_normal = ( newP - prevP ).Normalized();
5837 // if ( edge->_len < eof->_offsetValue )
5838 // edge->_len = eof->_offsetValue;
5840 if ( !eos._sWOL.IsNull() ) // RISKY_SWOL
5842 double change = eof->_offsetSurf->Gap() / eof->_offsetValue;
5843 if (( newP - tgtP.XYZ() ) * edge->_normal < 0 )
5844 change = 1 - change;
5846 change = 1 + change;
5847 gp_XYZ shitfVec = tgtP.XYZ() - SMESH_NodeXYZ( edge->_nodes[0] );
5848 gp_XYZ newShiftVec = shitfVec * change;
5849 double shift = edge->_normal * shitfVec;
5850 double newShift = edge->_normal * newShiftVec;
5851 newP = tgtP.XYZ() + edge->_normal * ( newShift - shift );
5853 uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, newP, preci );
5854 if ( eof->_offsetSurf->Gap() < edge->_len )
5856 edge->_curvature->_uv = uv;
5857 newP = eof->_offsetSurf->Value( uv ).XYZ();
5859 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5860 if ( !edge->UpdatePositionOnSWOL( n, /*tol=*/10 * edge->_len / ( edge->NbSteps() + 1 ),
5861 eos, eos.GetData().GetHelper() ))
5863 debugMsg("UpdatePositionOnSWOL fails in putOnOffsetSurface()" );
5869 if (SALOME::VerbosityActivated())
5871 // dumpMove() for debug
5873 for ( ; i < eos._edges.size(); ++i )
5874 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5876 if ( i < eos._edges.size() )
5878 dumpFunction(SMESH_Comment("putOnOffsetSurface_") << eos.ShapeTypeLetter() << eos._shapeID
5879 << "_InfStep" << infStep << "_" << Abs( smooStep ));
5880 for ( ; i < eos._edges.size(); ++i )
5882 if ( eos._edges[i]->Is( _LayerEdge::MARKED )) {
5883 dumpMove( eos._edges[i]->_nodes.back() );
5890 _ConvexFace* cnvFace;
5891 if ( moveAll != _LayerEdge::UPD_NORMAL_CONV &&
5892 eos.ShapeType() == TopAbs_FACE &&
5893 (cnvFace = eos.GetData().GetConvexFace( eos._shapeID )) &&
5894 !cnvFace->_normalsFixedOnBorders )
5896 // put on the surface nodes built on FACE boundaries
5897 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5898 while ( smIt->more() )
5900 SMESH_subMesh* sm = smIt->next();
5901 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5902 if ( !subEOS->_sWOL.IsNull() ) continue;
5903 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5905 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::UPD_NORMAL_CONV );
5907 cnvFace->_normalsFixedOnBorders = true;
5912 // negative smooStep means "final step", where we don't treat RISKY_SWOL edges
5913 // as edges based on FACE are a bit late comparing with them
5914 if ( smooStep >= 0 &&
5915 neighborHasRiskySWOL &&
5916 moveAll != _LayerEdge::RISKY_SWOL &&
5917 eos.ShapeType() == TopAbs_FACE )
5919 // put on the surface nodes built on FACE boundaries
5920 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5921 while ( smIt->more() )
5923 SMESH_subMesh* sm = smIt->next();
5924 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5925 if ( subEOS->_sWOL.IsNull() ) continue;
5926 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5928 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::RISKY_SWOL );
5933 //================================================================================
5935 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5936 * _LayerEdge's to be in a consequent order
5938 //================================================================================
5940 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5942 SMESH_MesherHelper& helper)
5944 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5946 TopLoc_Location loc; double f,l;
5948 Handle(Geom_Line) line;
5949 Handle(Geom_Circle) circle;
5950 bool isLine, isCirc;
5951 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5953 // check if the EDGE is a line
5954 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5955 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5956 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5958 line = Handle(Geom_Line)::DownCast( curve );
5959 circle = Handle(Geom_Circle)::DownCast( curve );
5960 isLine = (!line.IsNull());
5961 isCirc = (!circle.IsNull());
5963 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5965 isLine = SMESH_Algo::IsStraight( E );
5968 line = new Geom_Line( gp::OX() ); // only type does matter
5970 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5975 else //////////////////////////////////////////////////////////////////////// 2D case
5977 if ( !eos._isRegularSWOL ) // 23190
5980 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5982 // check if the EDGE is a line
5983 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5984 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5985 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5987 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5988 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5989 isLine = (!line2d.IsNull());
5990 isCirc = (!circle2d.IsNull());
5992 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5995 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5996 while ( nIt->more() )
5997 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5998 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
6000 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
6001 for ( int i = 0; i < 2 && !isLine; ++i )
6002 isLine = ( size.Coord( i+1 ) <= lineTol );
6004 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
6010 line = new Geom_Line( gp::OX() ); // only type does matter
6014 gp_Pnt2d p = circle2d->Location();
6015 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
6016 circle = new Geom_Circle( ax, 1.); // only center position does matter
6025 return Handle(Geom_Curve)();
6028 //================================================================================
6030 * \brief Smooth edges on EDGE
6032 //================================================================================
6034 bool _Smoother1D::Perform(_SolidData& data,
6035 Handle(ShapeAnalysis_Surface)& surface,
6036 const TopoDS_Face& F,
6037 SMESH_MesherHelper& helper )
6039 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
6042 findEdgesToSmooth();
6044 return smoothAnalyticEdge( data, surface, F, helper );
6046 return smoothComplexEdge ( data, surface, F, helper );
6049 //================================================================================
6051 * \brief Find edges to smooth
6053 //================================================================================
6055 void _Smoother1D::findEdgesToSmooth()
6057 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6058 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6059 if ( leOnV[iEnd]->Is( _LayerEdge::NORMAL_UPDATED ))
6060 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6062 _eToSmooth[0].first = _eToSmooth[0].second = 0;
6064 for ( size_t i = 0; i < _eos.size(); ++i )
6066 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6068 if ( needSmoothing( _leOnV[0]._cosin,
6069 _eos[i]->_len * leOnV[0]->_lenFactor, _curveLen * _leParams[i] ) ||
6072 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6076 _eToSmooth[0].second = i+1;
6079 _eToSmooth[1].first = _eToSmooth[1].second = _eos.size();
6081 for ( int i = _eos.size() - 1; i >= _eToSmooth[0].second; --i )
6083 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6085 if ( needSmoothing( _leOnV[1]._cosin,
6086 _eos[i]->_len * leOnV[1]->_lenFactor, _curveLen * ( 1.-_leParams[i] )) ||
6088 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6092 _eToSmooth[1].first = i;
6096 //================================================================================
6098 * \brief Check if iE-th _LayerEdge needs smoothing
6100 //================================================================================
6102 bool _Smoother1D::isToSmooth( int iE )
6104 SMESH_NodeXYZ pi( _eos[iE]->_nodes[0] );
6105 SMESH_NodeXYZ p0( _eos[iE]->_2neibors->srcNode(0) );
6106 SMESH_NodeXYZ p1( _eos[iE]->_2neibors->srcNode(1) );
6107 gp_XYZ seg0 = pi - p0;
6108 gp_XYZ seg1 = p1 - pi;
6109 gp_XYZ tangent = seg0 + seg1;
6110 double tangentLen = tangent.Modulus();
6111 double segMinLen = Min( seg0.Modulus(), seg1.Modulus() );
6112 if ( tangentLen < std::numeric_limits<double>::min() )
6114 tangent /= tangentLen;
6116 for ( size_t i = 0; i < _eos[iE]->_neibors.size(); ++i )
6118 _LayerEdge* ne = _eos[iE]->_neibors[i];
6119 if ( !ne->Is( _LayerEdge::TO_SMOOTH ) ||
6120 ne->_nodes.size() < 2 ||
6121 ne->_nodes[0]->GetPosition()->GetDim() != 2 )
6123 gp_XYZ edgeVec = SMESH_NodeXYZ( ne->_nodes.back() ) - SMESH_NodeXYZ( ne->_nodes[0] );
6124 double proj = edgeVec * tangent;
6125 if ( needSmoothing( 1., proj, segMinLen ))
6131 //================================================================================
6133 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
6135 //================================================================================
6137 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
6138 Handle(ShapeAnalysis_Surface)& surface,
6139 const TopoDS_Face& F,
6140 SMESH_MesherHelper& helper)
6142 if ( !isAnalytic() ) return false;
6144 size_t iFrom = 0, iTo = _eos._edges.size();
6146 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
6148 if ( F.IsNull() ) // 3D
6150 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
6151 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
6152 //const gp_XYZ lineDir = pSrc1 - pSrc0;
6153 //_LayerEdge* vLE0 = getLEdgeOnV( 0 );
6154 //_LayerEdge* vLE1 = getLEdgeOnV( 1 );
6155 // bool shiftOnly = ( vLE0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6156 // vLE0->Is( _LayerEdge::BLOCKED ) ||
6157 // vLE1->Is( _LayerEdge::NORMAL_UPDATED ) ||
6158 // vLE1->Is( _LayerEdge::BLOCKED ));
6159 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6161 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6162 if ( iFrom >= iTo ) continue;
6163 SMESH_TNodeXYZ p0( _eos[iFrom]->_2neibors->tgtNode(0) );
6164 SMESH_TNodeXYZ p1( _eos[iTo-1]->_2neibors->tgtNode(1) );
6165 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6166 double param1 = _leParams[ iTo ];
6167 for ( size_t i = iFrom; i < iTo; ++i )
6169 _LayerEdge* edge = _eos[i];
6170 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
6171 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6172 gp_XYZ newPos = p0 * ( 1. - param ) + p1 * param;
6174 // if ( shiftOnly || edge->Is( _LayerEdge::NORMAL_UPDATED ))
6176 // gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
6177 // double shift = ( lineDir * ( newPos - pSrc0 ) -
6178 // lineDir * ( curPos - pSrc0 ));
6179 // newPos = curPos + lineDir * shift / lineDir.SquareModulus();
6181 if ( edge->Is( _LayerEdge::BLOCKED ))
6183 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
6184 double curThick = pSrc.SquareDistance( tgtNode );
6185 double newThink = ( pSrc - newPos ).SquareModulus();
6186 if ( newThink > curThick )
6189 edge->_pos.back() = newPos;
6190 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6191 dumpMove( tgtNode );
6197 _LayerEdge* eV0 = getLEdgeOnV( 0 );
6198 _LayerEdge* eV1 = getLEdgeOnV( 1 );
6199 gp_XY uvV0 = eV0->LastUV( F, *data.GetShapeEdges( eV0 ));
6200 gp_XY uvV1 = eV1->LastUV( F, *data.GetShapeEdges( eV1 ));
6201 if ( eV0->_nodes.back() == eV1->_nodes.back() ) // closed edge
6203 int iPeriodic = helper.GetPeriodicIndex();
6204 if ( iPeriodic == 1 || iPeriodic == 2 )
6206 uvV1.SetCoord( iPeriodic, helper.GetOtherParam( uvV1.Coord( iPeriodic )));
6207 if ( uvV0.Coord( iPeriodic ) > uvV1.Coord( iPeriodic ))
6208 std::swap( uvV0, uvV1 );
6211 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6213 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6214 if ( iFrom >= iTo ) continue;
6215 _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0];
6216 _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1];
6217 gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos );
6218 gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos );
6219 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6220 double param1 = _leParams[ iTo ];
6221 gp_XY rangeUV = uv1 - uv0;
6222 for ( size_t i = iFrom; i < iTo; ++i )
6224 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6225 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6226 gp_XY newUV = uv0 + param * rangeUV;
6228 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6229 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6230 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6231 dumpMove( tgtNode );
6233 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6235 pos->SetUParameter( newUV.X() );
6236 pos->SetVParameter( newUV.Y() );
6239 gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 );
6241 if ( !_eos[i]->Is( _LayerEdge::SMOOTHED ))
6243 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6244 if ( _eos[i]->_pos.size() > 2 )
6246 // modify previous positions to make _LayerEdge less sharply bent
6247 vector<gp_XYZ>& uvVec = _eos[i]->_pos;
6248 const gp_XYZ uvShift = newUV0 - uvVec.back();
6249 const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus();
6250 int iPrev = uvVec.size() - 2;
6253 double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2;
6254 uvVec[ iPrev ] += uvShift * r;
6259 _eos[i]->_pos.back() = newUV0;
6266 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
6268 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
6269 gp_Pnt center3D = circle->Location();
6271 if ( F.IsNull() ) // 3D
6273 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
6274 return true; // closed EDGE - nothing to do
6276 // circle is a real curve of EDGE
6277 gp_Circ circ = circle->Circ();
6279 // new center is shifted along its axis
6280 const gp_Dir& axis = circ.Axis().Direction();
6281 _LayerEdge* e0 = getLEdgeOnV(0);
6282 _LayerEdge* e1 = getLEdgeOnV(1);
6283 SMESH_TNodeXYZ p0 = e0->_nodes.back();
6284 SMESH_TNodeXYZ p1 = e1->_nodes.back();
6285 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
6286 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
6287 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
6289 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
6291 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
6292 gp_Circ newCirc( newAxis, newRadius );
6293 gp_Vec vecC1 ( newCenter, p1 );
6295 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
6299 for ( size_t i = 0; i < _eos.size(); ++i )
6301 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6302 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6303 double u = uLast * _leParams[i];
6304 gp_Pnt p = ElCLib::Value( u, newCirc );
6305 _eos._edges[i]->_pos.back() = p.XYZ();
6307 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6308 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6309 dumpMove( tgtNode );
6315 const gp_XY center( center3D.X(), center3D.Y() );
6317 _LayerEdge* e0 = getLEdgeOnV(0);
6318 _LayerEdge* eM = _eos._edges[ 0 ];
6319 _LayerEdge* e1 = getLEdgeOnV(1);
6320 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
6321 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
6322 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
6323 gp_Vec2d vec0( center, uv0 );
6324 gp_Vec2d vecM( center, uvM );
6325 gp_Vec2d vec1( center, uv1 );
6326 double uLast = vec0.Angle( vec1 ); // -PI - +PI
6327 double uMidl = vec0.Angle( vecM );
6328 if ( uLast * uMidl <= 0. )
6329 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
6330 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
6332 gp_Ax2d axis( center, vec0 );
6333 gp_Circ2d circ( axis, radius );
6334 for ( size_t i = 0; i < _eos.size(); ++i )
6336 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6337 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6338 double newU = uLast * _leParams[i];
6339 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
6340 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
6342 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6343 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6344 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6345 dumpMove( tgtNode );
6347 if ( SMDS_FacePositionPtr pos = tgtNode->GetPosition() ) // NULL if F is noShrink
6349 pos->SetUParameter( newUV.X() );
6350 pos->SetVParameter( newUV.Y() );
6352 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6361 //================================================================================
6363 * \brief smooth _LayerEdge's on a an EDGE
6365 //================================================================================
6367 bool _Smoother1D::smoothComplexEdge( _SolidData& /*data*/,
6368 Handle(ShapeAnalysis_Surface)& surface,
6369 const TopoDS_Face& F,
6370 SMESH_MesherHelper& /*helper*/)
6372 if ( _offPoints.empty() )
6375 // ----------------------------------------------
6376 // move _offPoints along normals of _LayerEdge's
6377 // ----------------------------------------------
6379 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6380 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED ))
6381 _leOnV[0]._normal = getNormalNormal( e[0]->_normal, _edgeDir[0] );
6382 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED ))
6383 _leOnV[1]._normal = getNormalNormal( e[1]->_normal, _edgeDir[1] );
6384 _leOnV[0]._len = e[0]->_len;
6385 _leOnV[1]._len = e[1]->_len;
6386 for ( size_t i = 0; i < _offPoints.size(); i++ )
6388 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6389 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6390 const double w0 = _offPoints[i]._2edges._wgt[0];
6391 const double w1 = _offPoints[i]._2edges._wgt[1];
6392 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
6393 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6394 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
6395 if ( e0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6396 e1->Is( _LayerEdge::NORMAL_UPDATED ))
6397 avgNorm = getNormalNormal( avgNorm, _offPoints[i]._edgeDir );
6399 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
6400 _offPoints[i]._len = avgLen;
6404 if ( !surface.IsNull() ) // project _offPoints to the FACE
6406 fTol = 100 * BRep_Tool::Tolerance( F );
6407 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
6409 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
6410 //if ( surface->Gap() < 0.5 * segLen )
6411 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
6413 for ( size_t i = 1; i < _offPoints.size(); ++i )
6415 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
6416 //if ( surface->Gap() < 0.5 * segLen )
6417 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
6421 // -----------------------------------------------------------------
6422 // project tgt nodes of extreme _LayerEdge's to the offset segments
6423 // -----------------------------------------------------------------
6425 const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED;
6426 if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0;
6427 if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2;
6429 gp_Pnt pExtreme[2], pProj[2];
6430 bool isProjected[2];
6431 for ( int is2nd = 0; is2nd < 2; ++is2nd )
6433 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
6434 int i = _iSeg[ is2nd ];
6435 int di = is2nd ? -1 : +1;
6436 bool & projected = isProjected[ is2nd ];
6438 double uOnSeg, distMin = Precision::Infinite(), dist, distPrev = 0;
6441 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
6442 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
6443 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude(); // param [0,1] along v01
6444 projected = ( Abs( uOnSeg - 0.5 ) <= 0.5 );
6445 dist = pExtreme[ is2nd ].SquareDistance( _offPoints[ i + ( uOnSeg > 0.5 )]._xyz );
6446 if ( dist < distMin || projected )
6449 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
6452 else if ( dist > distPrev )
6454 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
6460 while ( !projected &&
6461 i >= 0 && i+1 < (int)_offPoints.size() );
6465 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
6468 _iSeg[1] = _offPoints.size()-2;
6469 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
6474 if ( _iSeg[0] > _iSeg[1] )
6476 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
6480 // adjust length of extreme LE (test viscous_layers_01/B7)
6481 gp_Vec vDiv0( pExtreme[0], pProj[0] );
6482 gp_Vec vDiv1( pExtreme[1], pProj[1] );
6483 double d0 = vDiv0.Magnitude();
6484 double d1 = isProjected[1] ? vDiv1.Magnitude() : 0;
6485 if ( e[0]->Is( _LayerEdge::BLOCKED )) {
6486 if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0;
6487 else e[0]->_len -= d0;
6489 if ( e[1]->Is( _LayerEdge::BLOCKED )) {
6490 if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1;
6491 else e[1]->_len -= d1;
6494 // ---------------------------------------------------------------------------------
6495 // compute normalized length of the offset segments located between the projections
6496 // ---------------------------------------------------------------------------------
6498 // temporary replace extreme _offPoints by pExtreme
6499 gp_XYZ opXYZ[2] = { _offPoints[ _iSeg[0] ]._xyz,
6500 _offPoints[ _iSeg[1]+1 ]._xyz };
6501 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
6502 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
6504 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
6505 vector< double > len( nbSeg + 1 );
6507 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
6508 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
6510 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
6512 // if ( isProjected[ 1 ])
6513 // len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6515 // len[ nbSeg ] += pExtreme[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6517 double fullLen = len.back() - d0 - d1;
6518 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
6519 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
6521 // -------------------------------------------------------------
6522 // distribute tgt nodes of _LayerEdge's between the projections
6523 // -------------------------------------------------------------
6526 for ( size_t i = 0; i < _eos.size(); ++i )
6528 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6529 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6530 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
6532 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
6533 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
6534 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
6536 if ( surface.IsNull() )
6538 _eos[i]->_pos.back() = p;
6540 else // project a new node position to a FACE
6542 gp_Pnt2d uv ( _eos[i]->_pos.back().X(), _eos[i]->_pos.back().Y() );
6543 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
6545 p = surface->Value( uv2 ).XYZ();
6546 _eos[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
6548 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6549 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6550 dumpMove( tgtNode );
6553 _offPoints[ _iSeg[0] ]._xyz = opXYZ[0];
6554 _offPoints[ _iSeg[1]+1 ]._xyz = opXYZ[1];
6559 //================================================================================
6561 * \brief Prepare for smoothing
6563 //================================================================================
6565 void _Smoother1D::prepare(_SolidData& data)
6567 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
6568 _curveLen = SMESH_Algo::EdgeLength( E );
6570 // sort _LayerEdge's by position on the EDGE
6571 data.SortOnEdge( E, _eos._edges );
6573 // compute normalized param of _eos._edges on EDGE
6574 _leParams.resize( _eos._edges.size() + 1 );
6577 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
6579 for ( size_t i = 0; i < _eos._edges.size(); ++i )
6581 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
6582 curLen = p.Distance( pPrev );
6583 _leParams[i+1] = _leParams[i] + curLen;
6586 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
6587 for ( size_t i = 0; i < _leParams.size()-1; ++i )
6588 _leParams[i] = _leParams[i+1] / fullLen;
6589 _leParams.back() = 1.;
6592 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6594 // get cosin to use in findEdgesToSmooth()
6595 _edgeDir[0] = getEdgeDir( E, leOnV[0]->_nodes[0], data.GetHelper() );
6596 _edgeDir[1] = getEdgeDir( E, leOnV[1]->_nodes[0], data.GetHelper() );
6597 _leOnV[0]._cosin = Abs( leOnV[0]->_cosin );
6598 _leOnV[1]._cosin = Abs( leOnV[1]->_cosin );
6599 _leOnV[0]._flags = _leOnV[1]._flags = 0;
6600 if ( _eos._sWOL.IsNull() ) // 3D
6601 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6602 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6607 // divide E to have offset segments with low deflection
6608 BRepAdaptor_Curve c3dAdaptor( E );
6609 const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2|*sin(p1p2,p1pM)
6610 const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2)
6611 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
6612 if ( discret.NbPoints() <= 2 )
6614 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
6618 const double u0 = c3dAdaptor.FirstParameter();
6619 gp_Pnt p; gp_Vec tangent;
6620 if ( discret.NbPoints() >= (int) _eos.size() + 2 )
6622 _offPoints.resize( discret.NbPoints() );
6623 for ( size_t i = 0; i < _offPoints.size(); i++ )
6625 double u = discret.Parameter( i+1 );
6626 c3dAdaptor.D1( u, p, tangent );
6627 _offPoints[i]._xyz = p.XYZ();
6628 _offPoints[i]._edgeDir = tangent.XYZ();
6629 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6634 std::vector< double > params( _eos.size() + 2 );
6636 params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] );
6637 params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] );
6638 for ( size_t i = 0; i < _eos.size(); i++ )
6639 params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] );
6641 if ( params[1] > params[ _eos.size() ] )
6642 std::reverse( params.begin() + 1, params.end() - 1 );
6644 _offPoints.resize( _eos.size() + 2 );
6645 for ( size_t i = 0; i < _offPoints.size(); i++ )
6647 const double u = params[i];
6648 c3dAdaptor.D1( u, p, tangent );
6649 _offPoints[i]._xyz = p.XYZ();
6650 _offPoints[i]._edgeDir = tangent.XYZ();
6651 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6656 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
6657 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
6658 _2NearEdges tmp2edges;
6659 tmp2edges._edges[1] = _eos._edges[0];
6660 _leOnV[0]._2neibors = & tmp2edges;
6661 _leOnV[0]._nodes = leOnV[0]->_nodes;
6662 _leOnV[1]._nodes = leOnV[1]->_nodes;
6663 _LayerEdge* eNext, *ePrev = & _leOnV[0];
6664 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
6666 // find _LayerEdge's located before and after an offset point
6667 // (_eos._edges[ iLE ] is next after ePrev)
6668 while ( iLE < _eos._edges.size() && _offPoints[i]._param > _leParams[ iLE ] )
6669 ePrev = _eos._edges[ iLE++ ];
6670 eNext = ePrev->_2neibors->_edges[1];
6672 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
6673 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
6674 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
6675 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
6678 // replace _LayerEdge's on VERTEX by _leOnV in _offPoints._2edges
6679 for ( size_t i = 0; i < _offPoints.size(); i++ )
6680 if ( _offPoints[i]._2edges._edges[0] == leOnV[0] )
6681 _offPoints[i]._2edges._edges[0] = & _leOnV[0];
6683 for ( size_t i = _offPoints.size()-1; i > 0; i-- )
6684 if ( _offPoints[i]._2edges._edges[1] == leOnV[1] )
6685 _offPoints[i]._2edges._edges[1] = & _leOnV[1];
6688 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
6690 int iLBO = _offPoints.size() - 2; // last but one
6692 if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL ))
6693 _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] );
6695 _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] );
6696 if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL ))
6697 _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] );
6699 _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] );
6700 _leOnV[ 0 ]._len = 0;
6701 _leOnV[ 1 ]._len = 0;
6702 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
6703 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
6706 _iSeg[1] = _offPoints.size()-2;
6708 // initialize OffPnt::_len
6709 for ( size_t i = 0; i < _offPoints.size(); ++i )
6710 _offPoints[i]._len = 0;
6712 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
6714 _leOnV[0]._len = leOnV[0]->_len;
6715 _leOnV[1]._len = leOnV[1]->_len;
6716 for ( size_t i = 0; i < _offPoints.size(); i++ )
6718 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6719 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6720 const double w0 = _offPoints[i]._2edges._wgt[0];
6721 const double w1 = _offPoints[i]._2edges._wgt[1];
6722 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6723 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
6724 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
6725 _offPoints[i]._xyz = avgXYZ;
6726 _offPoints[i]._len = avgLen;
6731 //================================================================================
6733 * \brief return _normal of _leOnV[is2nd] normal to the EDGE
6735 //================================================================================
6737 gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal,
6738 const gp_XYZ& edgeDir)
6740 gp_XYZ cross = normal ^ edgeDir;
6741 gp_XYZ norm = edgeDir ^ cross;
6742 double size = norm.Modulus();
6744 // if ( size == 0 ) // MULTI_NORMAL _LayerEdge
6745 // return gp_XYZ( 1e-100, 1e-100, 1e-100 );
6747 if ( size < 1e-5 ) // normal || edgeDir (almost) at inflation along EDGE (bos #20643)
6749 const _LayerEdge* le = _eos._edges[ _eos._edges.size() / 2 ];
6750 const gp_XYZ& leNorm = le->_normal;
6752 cross = leNorm ^ edgeDir;
6753 norm = edgeDir ^ cross;
6754 size = norm.Modulus();
6760 //================================================================================
6762 * \brief Writes a script creating a mesh composed of _offPoints
6764 //================================================================================
6766 void _Smoother1D::offPointsToPython() const
6768 const char* fname = "/tmp/offPoints.py";
6769 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
6771 py << "import SMESH" << endl
6772 << "from salome.smesh import smeshBuilder" << endl
6773 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
6774 << "mesh = smesh.Mesh( 'offPoints' )"<<endl;
6775 for ( size_t i = 0; i < _offPoints.size(); i++ )
6777 py << "mesh.AddNode( "
6778 << _offPoints[i]._xyz.X() << ", "
6779 << _offPoints[i]._xyz.Y() << ", "
6780 << _offPoints[i]._xyz.Z() << " )" << endl;
6784 //================================================================================
6786 * \brief Sort _LayerEdge's by a parameter on a given EDGE
6788 //================================================================================
6790 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
6791 vector< _LayerEdge* >& edges)
6793 map< double, _LayerEdge* > u2edge;
6794 for ( size_t i = 0; i < edges.size(); ++i )
6795 u2edge.insert( u2edge.end(),
6796 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
6798 ASSERT( u2edge.size() == edges.size() );
6799 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
6800 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
6801 edges[i] = u2e->second;
6803 Sort2NeiborsOnEdge( edges );
6806 //================================================================================
6808 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
6810 //================================================================================
6812 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
6814 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
6816 for ( size_t i = 0; i < edges.size()-1; ++i )
6817 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
6818 edges[i]->_2neibors->reverse();
6820 const size_t iLast = edges.size() - 1;
6821 if ( edges.size() > 1 &&
6822 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
6823 edges[iLast]->_2neibors->reverse();
6826 //================================================================================
6828 * \brief Return _EdgesOnShape* corresponding to the shape
6830 //================================================================================
6832 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
6834 if ( shapeID < (int)_edgesOnShape.size() &&
6835 _edgesOnShape[ shapeID ]._shapeID == shapeID )
6836 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
6838 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
6839 if ( _edgesOnShape[i]._shapeID == shapeID )
6840 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
6845 //================================================================================
6847 * \brief Return _EdgesOnShape* corresponding to the shape
6849 //================================================================================
6851 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
6853 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
6854 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
6857 //================================================================================
6859 * \brief Prepare data of the _LayerEdge for smoothing on FACE
6861 //================================================================================
6863 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
6865 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
6867 set< TGeomID > vertices;
6869 if ( eos->ShapeType() == TopAbs_FACE )
6871 // check FACE concavity and get concave VERTEXes
6872 F = TopoDS::Face( eos->_shape );
6873 if ( isConcave( F, helper, &vertices ))
6874 _concaveFaces.insert( eos->_shapeID );
6876 // set eos._eosConcaVer
6877 eos->_eosConcaVer.clear();
6878 eos->_eosConcaVer.reserve( vertices.size() );
6879 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
6881 _EdgesOnShape* eov = GetShapeEdges( *v );
6882 if ( eov && eov->_edges.size() == 1 )
6884 eos->_eosConcaVer.push_back( eov );
6885 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
6886 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
6890 // SetSmooLen() to _LayerEdge's on FACE
6891 // for ( size_t i = 0; i < eos->_edges.size(); ++i )
6893 // eos->_edges[i]->SetSmooLen( Precision::Infinite() );
6895 // SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6896 // while ( smIt->more() ) // loop on sub-shapes of the FACE
6898 // _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
6899 // if ( !eoe ) continue;
6901 // vector<_LayerEdge*>& eE = eoe->_edges;
6902 // for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
6904 // if ( eE[iE]->_cosin <= theMinSmoothCosin )
6907 // SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
6908 // while ( segIt->more() )
6910 // const SMDS_MeshElement* seg = segIt->next();
6911 // if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
6913 // if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
6914 // continue; // not to check a seg twice
6915 // for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
6917 // _LayerEdge* eN = eE[iE]->_neibors[iN];
6918 // if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
6920 // double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
6921 // double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
6922 // eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
6923 // eN->Set( _LayerEdge::NEAR_BOUNDARY );
6928 } // if ( eos->ShapeType() == TopAbs_FACE )
6930 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6932 eos->_edges[i]->_smooFunction = 0;
6933 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
6935 bool isCurved = false;
6936 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6938 _LayerEdge* edge = eos->_edges[i];
6940 // get simplices sorted
6941 _Simplex::SortSimplices( edge->_simplices );
6943 // smoothing function
6944 edge->ChooseSmooFunction( vertices, _n2eMap );
6947 double avgNormProj = 0, avgLen = 0;
6948 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
6950 _Simplex& s = edge->_simplices[iS];
6952 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
6953 avgNormProj += edge->_normal * vec;
6954 avgLen += vec.Modulus();
6955 if ( substituteSrcNodes )
6957 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
6958 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
6961 avgNormProj /= edge->_simplices.size();
6962 avgLen /= edge->_simplices.size();
6963 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
6965 edge->Set( _LayerEdge::SMOOTHED_C1 );
6967 SMDS_FacePositionPtr fPos = edge->_nodes[0]->GetPosition();
6969 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
6970 fPos = edge->_simplices[iS]._nPrev->GetPosition();
6972 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
6976 // prepare for putOnOffsetSurface()
6977 if (( eos->ShapeType() == TopAbs_FACE ) &&
6978 ( isCurved || !eos->_eosConcaVer.empty() ))
6980 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
6981 eos->_edgeForOffset = 0;
6983 double maxCosin = -1;
6984 //bool hasNoShrink = false;
6985 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
6987 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
6988 if ( !eoe || eoe->_edges.empty() ) continue;
6990 // if ( eos->GetData()._noShrinkShapes.count( eoe->_shapeID ))
6991 // hasNoShrink = true;
6993 vector<_LayerEdge*>& eE = eoe->_edges;
6994 _LayerEdge* e = eE[ eE.size() / 2 ];
6995 if ( !e->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > maxCosin )
6997 eos->_edgeForOffset = e;
6998 maxCosin = e->_cosin;
7001 if ( !eoe->_sWOL.IsNull() )
7002 for ( _LayerEdge* le : eoe->_edges )
7003 if ( le->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > 0 )
7005 // make _neibors on FACE be smoothed after le->Is( BLOCKED )
7006 for ( _LayerEdge* neibor : le->_neibors )
7008 int shapeDim = neibor->BaseShapeDim();
7009 if ( shapeDim == 2 )
7010 neibor->Set( _LayerEdge::NEAR_BOUNDARY ); // on FACE
7011 else if ( shapeDim == 0 )
7012 neibor->Set( _LayerEdge::RISKY_SWOL ); // on VERTEX
7014 if ( !neibor->_curvature )
7016 gp_XY uv = helper.GetNodeUV( F, neibor->_nodes[0] );
7017 neibor->_curvature = _Factory::NewCurvature();
7018 neibor->_curvature->_r = 0;
7019 neibor->_curvature->_k = 0;
7020 neibor->_curvature->_h2lenRatio = 0;
7021 neibor->_curvature->_uv = uv;
7027 // Try to initialize _Mapper2D
7029 // if ( hasNoShrink )
7032 SMDS_ElemIteratorPtr fIt = eos->_subMesh->GetSubMeshDS()->GetElements();
7033 if ( !fIt->more() || fIt->next()->NbCornerNodes() != 4 )
7036 // get EDGEs of quadrangle bottom
7037 std::list< TopoDS_Edge > edges;
7038 std::list< int > nbEdgesInWire;
7039 int nbWire = SMESH_Block::GetOrderedEdges( F, edges, nbEdgesInWire );
7040 if ( nbWire != 1 || nbEdgesInWire.front() < 4 )
7042 const SMDS_MeshNode* node;
7043 while ( true ) // make edges start at a corner VERTEX
7045 node = SMESH_Algo::VertexNode( helper.IthVertex( 0, edges.front() ), helper.GetMeshDS() );
7046 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7049 if ( edges.empty() )
7052 std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
7053 while ( true ) // make edges finish at a corner VERTEX
7055 node = SMESH_Algo::VertexNode( helper.IthVertex( 1, *edgeIt ), helper.GetMeshDS() );
7057 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7059 edges.erase( edgeIt, edges.end() );
7062 if ( edgeIt == edges.end() )
7066 // get structure of nodes
7067 TParam2ColumnMap param2ColumnMap;
7068 if ( !helper.LoadNodeColumns( param2ColumnMap, F, edges, helper.GetMeshDS() ))
7071 eos->_mapper2D = new _Mapper2D( param2ColumnMap, eos->GetData()._n2eMap );
7073 } // if eos is of curved FACE
7078 //================================================================================
7080 * \brief Add faces for smoothing
7082 //================================================================================
7084 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
7085 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
7087 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
7088 for ( ; eos != eosToSmooth.end(); ++eos )
7090 if ( !*eos || (*eos)->_toSmooth ) continue;
7092 (*eos)->_toSmooth = true;
7094 if ( (*eos)->ShapeType() == TopAbs_FACE )
7096 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
7097 (*eos)->_toSmooth = true;
7101 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
7102 if ( edgesNoAnaSmooth )
7103 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
7105 if ( (*eos)->_edgeSmoother )
7106 (*eos)->_edgeSmoother->_anaCurve.Nullify();
7110 //================================================================================
7112 * \brief Limit _LayerEdge::_maxLen according to local curvature
7114 //================================================================================
7116 void _ViscousBuilder::limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& /*helper*/ )
7118 // find intersection of neighbor _LayerEdge's to limit _maxLen
7119 // according to local curvature (IPAL52648)
7121 // This method must be called after findCollisionEdges() where _LayerEdge's
7122 // get _lenFactor initialized in the case of eos._hyp.IsOffsetMethod()
7124 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7126 _EdgesOnShape& eosI = data._edgesOnShape[iS];
7127 if ( eosI._edges.empty() ) continue;
7128 if ( !eosI._hyp.ToSmooth() )
7130 for ( size_t i = 0; i < eosI._edges.size(); ++i )
7132 _LayerEdge* eI = eosI._edges[i];
7133 for ( size_t iN = 0; iN < eI->_neibors.size(); ++iN )
7135 _LayerEdge* eN = eI->_neibors[iN];
7136 if ( eI->_nodes[0]->GetID() < eN->_nodes[0]->GetID() ) // treat this pair once
7138 _EdgesOnShape* eosN = data.GetShapeEdges( eN );
7139 limitMaxLenByCurvature( eI, eN, eosI, *eosN, eosI._hyp.ToSmooth() );
7144 else if ( eosI.ShapeType() == TopAbs_EDGE )
7146 const TopoDS_Edge& E = TopoDS::Edge( eosI._shape );
7147 if ( SMESH_Algo::IsStraight( E, /*degenResult=*/true )) continue;
7149 _LayerEdge* e0 = eosI._edges[0];
7150 for ( size_t i = 1; i < eosI._edges.size(); ++i )
7152 _LayerEdge* eI = eosI._edges[i];
7153 limitMaxLenByCurvature( eI, e0, eosI, eosI, eosI._hyp.ToSmooth() );
7160 //================================================================================
7162 * \brief Limit _LayerEdge::_maxLen according to local curvature
7164 //================================================================================
7166 void _ViscousBuilder::limitMaxLenByCurvature( _LayerEdge* e1,
7168 _EdgesOnShape& /*eos1*/,
7169 _EdgesOnShape& /*eos2*/,
7170 const bool /*isSmoothable*/ )
7172 if (( e1->_nodes[0]->GetPosition()->GetDim() !=
7173 e2->_nodes[0]->GetPosition()->GetDim() ) &&
7174 ( e1->_cosin < 0.75 ))
7175 return; // angle > 90 deg at e1
7177 gp_XYZ plnNorm = e1->_normal ^ e2->_normal;
7178 double norSize = plnNorm.SquareModulus();
7179 if ( norSize < std::numeric_limits<double>::min() )
7180 return; // parallel normals
7182 // find closest points of skew _LayerEdge's
7183 SMESH_TNodeXYZ src1( e1->_nodes[0] ), src2( e2->_nodes[0] );
7184 gp_XYZ dir12 = src2 - src1;
7185 gp_XYZ perp1 = e1->_normal ^ plnNorm;
7186 gp_XYZ perp2 = e2->_normal ^ plnNorm;
7187 double dot1 = perp2 * e1->_normal;
7188 double dot2 = perp1 * e2->_normal;
7189 double u1 = ( perp2 * dir12 ) / dot1;
7190 double u2 = - ( perp1 * dir12 ) / dot2;
7191 if ( u1 > 0 && u2 > 0 )
7193 double ovl = ( u1 * e1->_normal * dir12 -
7194 u2 * e2->_normal * dir12 ) / dir12.SquareModulus();
7195 if ( ovl > theSmoothThickToElemSizeRatio )
7197 const double coef = 0.75;
7198 e1->SetMaxLen( Min( e1->_maxLen, coef * u1 / e1->_lenFactor ));
7199 e2->SetMaxLen( Min( e2->_maxLen, coef * u2 / e2->_lenFactor ));
7204 //================================================================================
7206 * \brief Fill data._collisionEdges
7208 //================================================================================
7210 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
7212 data._collisionEdges.clear();
7214 // set the full thickness of the layers to LEs
7215 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7217 _EdgesOnShape& eos = data._edgesOnShape[iS];
7218 if ( eos._edges.empty() ) continue;
7219 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7220 if ( !eos._sWOL.IsNull() ) continue; // PAL23566
7222 for ( size_t i = 0; i < eos._edges.size(); ++i )
7224 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
7225 double maxLen = eos._edges[i]->_maxLen;
7226 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
7227 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
7228 eos._edges[i]->_maxLen = maxLen;
7232 // make temporary quadrangles got by extrusion of
7233 // mesh edges along _LayerEdge._normal's
7235 vector< const SMDS_MeshElement* > tmpFaces;
7237 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7239 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7240 if ( eos.ShapeType() != TopAbs_EDGE )
7242 if ( eos._edges.empty() )
7244 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
7245 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
7246 while ( smIt->more() )
7247 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
7248 if ( eov->_edges.size() == 1 )
7249 edge[ bool( edge[0]) ] = eov->_edges[0];
7253 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
7254 tmpFaces.push_back( f );
7257 for ( size_t i = 0; i < eos._edges.size(); ++i )
7259 _LayerEdge* edge = eos._edges[i];
7260 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
7262 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
7263 if ( src2->GetPosition()->GetDim() > 0 &&
7264 src2->GetID() < edge->_nodes[0]->GetID() )
7265 continue; // avoid using same segment twice
7267 // a _LayerEdge containing tgt2
7268 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
7270 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
7271 tmpFaces.push_back( f );
7276 // Find _LayerEdge's intersecting tmpFaces.
7278 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
7280 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
7281 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
7283 double dist1, dist2, segLen, eps = 0.5;
7284 _CollisionEdges collEdges;
7285 vector< const SMDS_MeshElement* > suspectFaces;
7286 const double angle45 = Cos( 45. * M_PI / 180. );
7288 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7290 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7291 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
7293 // find sub-shapes whose VL can influence VL on eos
7294 set< TGeomID > neighborShapes;
7295 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
7296 while ( const TopoDS_Shape* face = fIt->next() )
7298 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
7299 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
7301 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
7302 while ( subIt->more() )
7303 neighborShapes.insert( subIt->next()->GetId() );
7306 if ( eos.ShapeType() == TopAbs_VERTEX )
7308 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
7309 while ( const TopoDS_Shape* edge = eIt->next() )
7310 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
7312 // find intersecting _LayerEdge's
7313 for ( size_t i = 0; i < eos._edges.size(); ++i )
7315 if ( eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL )) continue;
7316 _LayerEdge* edge = eos._edges[i];
7317 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
7320 gp_Vec eSegDir0, eSegDir1;
7321 if ( edge->IsOnEdge() )
7323 SMESH_TNodeXYZ eP( edge->_nodes[0] );
7324 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
7325 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
7327 suspectFaces.clear();
7328 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len * 2,
7329 SMDSAbs_Face, suspectFaces );
7330 collEdges._intEdges.clear();
7331 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
7333 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
7334 if ( f->_le1 == edge || f->_le2 == edge ) continue;
7335 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
7336 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
7337 if ( edge->IsOnEdge() ) {
7338 if ( edge->_2neibors->include( f->_le1 ) ||
7339 edge->_2neibors->include( f->_le2 )) continue;
7342 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
7343 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
7345 dist1 = dist2 = Precision::Infinite();
7346 if ( !edge->SegTriaInter( lastSegment, f->n(0), f->n(1), f->n(2), dist1, eps ))
7347 dist1 = Precision::Infinite();
7348 if ( !edge->SegTriaInter( lastSegment, f->n(3), f->n(2), f->n(0), dist2, eps ))
7349 dist2 = Precision::Infinite();
7350 if (( dist1 > segLen ) && ( dist2 > segLen ))
7353 if ( edge->IsOnEdge() )
7355 // skip perpendicular EDGEs
7356 gp_Vec fSegDir = SMESH_TNodeXYZ( f->n(0) ) - SMESH_TNodeXYZ( f->n(3) );
7357 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle45 ) ||
7358 isLessAngle( eSegDir1, fSegDir, angle45 ) ||
7359 isLessAngle( eSegDir0, fSegDir.Reversed(), angle45 ) ||
7360 isLessAngle( eSegDir1, fSegDir.Reversed(), angle45 ));
7365 // either limit inflation of edges or remember them for updating _normal
7366 // double dot = edge->_normal * f->GetDir();
7369 collEdges._intEdges.push_back( f->_le1 );
7370 collEdges._intEdges.push_back( f->_le2 );
7374 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
7375 // edge->SetMaxLen( Min( shortLen, edge->_maxLen ));
7379 if ( !collEdges._intEdges.empty() )
7381 collEdges._edge = edge;
7382 data._collisionEdges.push_back( collEdges );
7387 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
7390 // restore the zero thickness
7391 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7393 _EdgesOnShape& eos = data._edgesOnShape[iS];
7394 if ( eos._edges.empty() ) continue;
7395 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7397 for ( size_t i = 0; i < eos._edges.size(); ++i )
7399 eos._edges[i]->InvalidateStep( 1, eos );
7400 eos._edges[i]->_len = 0;
7405 //================================================================================
7407 * \brief Find _LayerEdge's located on boundary of a convex FACE whose normal
7408 * will be updated at each inflation step
7410 //================================================================================
7412 void _ViscousBuilder::findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
7414 SMESH_MesherHelper& helper )
7416 const TGeomID convFaceID = getMeshDS()->ShapeToIndex( convFace._face );
7417 const double preci = BRep_Tool::Tolerance( convFace._face );
7418 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( convFace._face );
7420 bool edgesToUpdateFound = false;
7422 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7423 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7425 _EdgesOnShape& eos = * id2eos->second;
7426 if ( !eos._sWOL.IsNull() ) continue;
7427 if ( !eos._hyp.ToSmooth() ) continue;
7428 for ( size_t i = 0; i < eos._edges.size(); ++i )
7430 _LayerEdge* ledge = eos._edges[ i ];
7431 if ( ledge->Is( _LayerEdge::UPD_NORMAL_CONV )) continue; // already checked
7432 if ( ledge->Is( _LayerEdge::MULTI_NORMAL )) continue; // not inflatable
7434 gp_XYZ tgtPos = ( SMESH_NodeXYZ( ledge->_nodes[0] ) +
7435 ledge->_normal * ledge->_lenFactor * ledge->_maxLen );
7437 // the normal must be updated if distance from tgtPos to surface is less than
7440 // find an initial UV for search of a projection of tgtPos to surface
7441 const SMDS_MeshNode* nodeInFace = 0;
7442 SMDS_ElemIteratorPtr fIt = ledge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7443 while ( fIt->more() && !nodeInFace )
7445 const SMDS_MeshElement* f = fIt->next();
7446 if ( convFaceID != f->getshapeId() ) continue;
7448 SMDS_ElemIteratorPtr nIt = f->nodesIterator();
7449 while ( nIt->more() && !nodeInFace )
7451 const SMDS_MeshElement* n = nIt->next();
7452 if ( n->getshapeId() == convFaceID )
7453 nodeInFace = static_cast< const SMDS_MeshNode* >( n );
7458 gp_XY uv = helper.GetNodeUV( convFace._face, nodeInFace );
7461 surface->NextValueOfUV( uv, tgtPos, preci );
7462 double dist = surface->Gap();
7463 if ( dist < 0.95 * ledge->_maxLen )
7465 ledge->Set( _LayerEdge::UPD_NORMAL_CONV );
7466 if ( !ledge->_curvature ) ledge->_curvature = _Factory::NewCurvature();
7467 ledge->_curvature->_uv.SetCoord( uv.X(), uv.Y() );
7468 edgesToUpdateFound = true;
7473 if ( !convFace._isTooCurved && edgesToUpdateFound )
7475 data._convexFaces.insert( make_pair( convFaceID, convFace )).first->second;
7479 //================================================================================
7481 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
7482 * _LayerEdge's on neighbor EDGE's
7484 //================================================================================
7486 bool _ViscousBuilder::updateNormals( _SolidData& data,
7487 SMESH_MesherHelper& helper,
7489 double /*stepSize*/)
7491 updateNormalsOfC1Vertices( data );
7493 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
7496 // map to store new _normal and _cosin for each intersected edge
7497 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
7498 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
7499 _LayerEdge zeroEdge;
7500 zeroEdge._normal.SetCoord( 0,0,0 );
7501 zeroEdge._maxLen = Precision::Infinite();
7502 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
7504 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
7506 double segLen, dist1, dist2, dist;
7507 vector< pair< _LayerEdge*, double > > intEdgesDist;
7508 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
7510 for ( int iter = 0; iter < 5; ++iter )
7512 edge2newEdge.clear();
7514 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
7516 _CollisionEdges& ce = data._collisionEdges[iE];
7517 _LayerEdge* edge1 = ce._edge;
7518 if ( !edge1 /*|| edge1->Is( _LayerEdge::BLOCKED )*/) continue;
7519 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7520 if ( !eos1 ) continue;
7522 // detect intersections
7523 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
7524 double testLen = 1.5 * edge1->_maxLen * edge1->_lenFactor;
7526 intEdgesDist.clear();
7527 double minIntDist = Precision::Infinite();
7528 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
7530 if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7531 ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) &&
7532 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
7534 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
7535 double fact = ( 1.1 + dot * dot );
7536 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
7537 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
7538 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
7539 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
7540 dist1 = dist2 = Precision::Infinite();
7541 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pLast0, pSrc1, dist1, eps ) &&
7542 !edge1->SegTriaInter( lastSeg, pSrc1, pLast1, pLast0, dist2, eps ))
7545 if ( dist > testLen || dist <= 0 )
7548 if ( dist > testLen || dist <= 0 )
7551 // choose a closest edge
7552 gp_Pnt intP( lastSeg.Location().XYZ() + lastSeg.Direction().XYZ() * ( dist + segLen ));
7553 double d1 = intP.SquareDistance( pSrc0 );
7554 double d2 = intP.SquareDistance( pSrc1 );
7555 int iClose = i + ( d2 < d1 );
7556 _LayerEdge* edge2 = ce._intEdges[iClose];
7557 edge2->Unset( _LayerEdge::MARKED );
7559 // choose a closest edge among neighbors
7560 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
7561 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
7562 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
7564 _LayerEdge * edgeJ = intEdgesDist[j].first;
7565 if ( edge2->IsNeiborOnEdge( edgeJ ))
7567 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
7568 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
7571 intEdgesDist.push_back( make_pair( edge2, dist ));
7572 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
7574 // iClose = i + !( d2 < d1 );
7575 // intEdges.push_back( ce._intEdges[iClose] );
7576 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
7578 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist, minIntDist );
7583 // compute new _normals
7584 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
7586 _LayerEdge* edge2 = intEdgesDist[i].first;
7587 double distWgt = edge1->_len / intEdgesDist[i].second;
7588 // if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7589 // edge2->Is( _LayerEdge::BLOCKED )) continue;
7590 if ( edge2->Is( _LayerEdge::MARKED )) continue;
7591 edge2->Set( _LayerEdge::MARKED );
7594 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
7596 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7597 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7598 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7599 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7600 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
7601 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7602 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7603 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
7604 newNormal.Normalize();
7608 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
7609 if ( cos1 < theMinSmoothCosin )
7611 newCos = cos2 * sgn1;
7613 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
7615 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
7619 newCos = edge1->_cosin;
7622 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
7623 e2neIt->second._normal += distWgt * newNormal;
7624 e2neIt->second._cosin = newCos;
7625 e2neIt->second.SetMaxLen( 0.7 * minIntDist / edge1->_lenFactor );
7626 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
7627 e2neIt->second._normal += dir2;
7629 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
7630 e2neIt->second._normal += distWgt * newNormal;
7631 if ( Precision::IsInfinite( zeroEdge._maxLen ))
7633 e2neIt->second._cosin = edge2->_cosin;
7634 e2neIt->second.SetMaxLen( 1.3 * minIntDist / edge1->_lenFactor );
7636 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
7637 e2neIt->second._normal += dir1;
7641 if ( edge2newEdge.empty() )
7642 break; //return true;
7644 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
7646 // Update data of edges depending on a new _normal
7649 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7651 _LayerEdge* edge = e2neIt->first;
7652 _LayerEdge& newEdge = e2neIt->second;
7653 _EdgesOnShape* eos = data.GetShapeEdges( edge );
7654 if ( edge->Is( _LayerEdge::BLOCKED ) && newEdge._maxLen > edge->_len )
7657 // Check if a new _normal is OK:
7658 newEdge._normal.Normalize();
7659 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
7661 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
7663 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7664 edge->SetMaxLen( newEdge._maxLen );
7665 edge->SetNewLength( newEdge._maxLen, *eos, helper );
7667 continue; // the new _normal is bad
7669 // the new _normal is OK
7671 // find shapes that need smoothing due to change of _normal
7672 if ( edge->_cosin < theMinSmoothCosin &&
7673 newEdge._cosin > theMinSmoothCosin )
7675 if ( eos->_sWOL.IsNull() )
7677 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7678 while ( fIt->more() )
7679 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
7681 else // edge inflates along a FACE
7683 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
7684 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE, &eos->_sWOL );
7685 while ( const TopoDS_Shape* E = eIt->next() )
7687 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ),
7688 eos->_hyp.Get1stLayerThickness() );
7689 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
7690 if ( angle < M_PI / 2 )
7691 shapesToSmooth.insert( data.GetShapeEdges( *E ));
7696 double len = edge->_len;
7697 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7698 edge->SetNormal( newEdge._normal );
7699 edge->SetCosin( newEdge._cosin );
7700 edge->SetNewLength( len, *eos, helper );
7701 edge->Set( _LayerEdge::MARKED );
7702 edge->Set( _LayerEdge::NORMAL_UPDATED );
7703 edgesNoAnaSmooth.insert( eos );
7706 // Update normals and other dependent data of not intersecting _LayerEdge's
7707 // neighboring the intersecting ones
7709 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7711 _LayerEdge* edge1 = e2neIt->first;
7712 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7713 if ( !edge1->Is( _LayerEdge::MARKED ))
7716 if ( edge1->IsOnEdge() )
7718 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
7719 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
7720 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
7723 if ( !edge1->_2neibors || !eos1->_sWOL.IsNull() )
7725 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
7727 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
7728 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
7729 continue; // j-th neighbor is also intersected
7730 _LayerEdge* prevEdge = edge1;
7731 const int nbSteps = 10;
7732 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
7734 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
7735 neighbor->Is( _LayerEdge::MARKED ))
7737 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
7738 if ( !eos ) continue;
7739 _LayerEdge* nextEdge = neighbor;
7740 if ( neighbor->_2neibors )
7743 nextEdge = neighbor->_2neibors->_edges[iNext];
7744 if ( nextEdge == prevEdge )
7745 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
7747 double r = double(step-1)/nbSteps/(iter+1);
7748 if ( !nextEdge->_2neibors )
7751 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
7752 newNorm.Normalize();
7753 if ( !isNewNormalOk( data, *neighbor, newNorm ))
7756 double len = neighbor->_len;
7757 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7758 neighbor->SetNormal( newNorm );
7759 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
7760 if ( neighbor->_2neibors )
7761 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
7762 neighbor->SetNewLength( len, *eos, helper );
7763 neighbor->Set( _LayerEdge::MARKED );
7764 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
7765 edgesNoAnaSmooth.insert( eos );
7767 if ( !neighbor->_2neibors )
7768 break; // neighbor is on VERTEX
7770 // goto the next neighbor
7771 prevEdge = neighbor;
7772 neighbor = nextEdge;
7779 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
7784 //================================================================================
7786 * \brief Check if a new normal is OK
7788 //================================================================================
7790 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
7792 const gp_XYZ& newNormal)
7794 // check a min angle between the newNormal and surrounding faces
7795 vector<_Simplex> simplices;
7796 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
7797 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
7798 double newMinDot = 1, curMinDot = 1;
7799 for ( size_t i = 0; i < simplices.size(); ++i )
7801 n1.Set( simplices[i]._nPrev );
7802 n2.Set( simplices[i]._nNext );
7803 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
7804 double normLen2 = normFace.SquareModulus();
7805 if ( normLen2 < std::numeric_limits<double>::min() )
7807 normFace /= Sqrt( normLen2 );
7808 newMinDot = Min( newNormal * normFace, newMinDot );
7809 curMinDot = Min( edge._normal * normFace, curMinDot );
7812 if ( newMinDot < 0.5 )
7814 ok = ( newMinDot >= curMinDot * 0.9 );
7815 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
7816 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
7817 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
7823 //================================================================================
7825 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
7827 //================================================================================
7829 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
7830 SMESH_MesherHelper& /*helper*/,
7832 const double stepSize )
7834 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
7835 return true; // no shapes needing smoothing
7837 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7839 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7840 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
7841 !eos._hyp.ToSmooth() ||
7842 eos.ShapeType() != TopAbs_FACE ||
7843 eos._edges.empty() )
7846 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
7847 if ( !toSmooth ) continue;
7849 for ( size_t i = 0; i < eos._edges.size(); ++i )
7851 _LayerEdge* edge = eos._edges[i];
7852 if ( !edge->Is( _LayerEdge::SMOOTHED ))
7854 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
7857 const gp_XYZ& pPrev = edge->PrevPos();
7858 const gp_XYZ& pLast = edge->_pos.back();
7859 gp_XYZ stepVec = pLast - pPrev;
7860 double realStepSize = stepVec.Modulus();
7861 if ( realStepSize < numeric_limits<double>::min() )
7864 edge->_lenFactor = realStepSize / stepSize;
7865 edge->_normal = stepVec / realStepSize;
7866 edge->Set( _LayerEdge::NORMAL_UPDATED );
7873 //================================================================================
7875 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
7877 //================================================================================
7879 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
7881 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7883 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
7884 if ( eov._eosC1.empty() ||
7885 eov.ShapeType() != TopAbs_VERTEX ||
7886 eov._edges.empty() )
7889 gp_XYZ newNorm = eov._edges[0]->_normal;
7890 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
7891 bool normChanged = false;
7893 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
7895 _EdgesOnShape* eoe = eov._eosC1[i];
7896 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
7897 const double eLen = SMESH_Algo::EdgeLength( e );
7898 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
7899 if ( oppV.IsSame( eov._shape ))
7900 oppV = SMESH_MesherHelper::IthVertex( 1, e );
7901 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
7902 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
7903 if ( eov._edges[0]->Is( _LayerEdge::BLOCKED )) continue;
7905 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
7906 if ( curThickOpp + curThick < eLen )
7909 double wgt = 2. * curThick / eLen;
7910 newNorm += wgt * eovOpp->_edges[0]->_normal;
7915 eov._edges[0]->SetNormal( newNorm.Normalized() );
7916 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
7921 //================================================================================
7923 * \brief Modify normals of _LayerEdge's on _ConvexFace's
7925 //================================================================================
7927 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
7928 SMESH_MesherHelper& helper,
7931 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
7934 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
7935 for ( ; id2face != data._convexFaces.end(); ++id2face )
7937 _ConvexFace & convFace = (*id2face).second;
7938 convFace._normalsFixedOnBorders = false; // to update at each inflation step
7940 if ( convFace._normalsFixed )
7941 continue; // already fixed
7942 if ( convFace.CheckPrisms() )
7943 continue; // nothing to fix
7945 convFace._normalsFixed = true;
7947 BRepAdaptor_Surface surface ( convFace._face, false );
7948 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
7950 // check if the convex FACE is of spherical shape
7952 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
7956 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7957 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7959 _EdgesOnShape& eos = *(id2eos->second);
7960 if ( eos.ShapeType() == TopAbs_VERTEX )
7962 _LayerEdge* ledge = eos._edges[ 0 ];
7963 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7964 centersBox.Add( center );
7966 for ( size_t i = 0; i < eos._edges.size(); ++i )
7967 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
7969 if ( centersBox.IsVoid() )
7971 debugMsg( "Error: centersBox.IsVoid()" );
7974 const bool isSpherical =
7975 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7977 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
7978 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
7982 // set _LayerEdge::_normal as average of all normals
7984 // WARNING: different density of nodes on EDGEs is not taken into account that
7985 // can lead to an improper new normal
7987 gp_XYZ avgNormal( 0,0,0 );
7989 id2eos = convFace._subIdToEOS.begin();
7990 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7992 _EdgesOnShape& eos = *(id2eos->second);
7993 // set data of _CentralCurveOnEdge
7994 if ( eos.ShapeType() == TopAbs_EDGE )
7996 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
7997 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
7998 if ( !eos._sWOL.IsNull() )
7999 ceCurve._adjFace.Nullify();
8001 ceCurve._ledges.insert( ceCurve._ledges.end(),
8002 eos._edges.begin(), eos._edges.end());
8004 // summarize normals
8005 for ( size_t i = 0; i < eos._edges.size(); ++i )
8006 avgNormal += eos._edges[ i ]->_normal;
8008 double normSize = avgNormal.SquareModulus();
8009 if ( normSize < 1e-200 )
8011 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
8014 avgNormal /= Sqrt( normSize );
8016 // compute new _LayerEdge::_cosin on EDGEs
8017 double avgCosin = 0;
8020 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8022 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
8023 if ( ceCurve._adjFace.IsNull() )
8025 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
8027 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
8028 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8031 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
8032 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
8033 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
8039 avgCosin /= nbCosin;
8041 // set _LayerEdge::_normal = avgNormal
8042 id2eos = convFace._subIdToEOS.begin();
8043 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8045 _EdgesOnShape& eos = *(id2eos->second);
8046 if ( eos.ShapeType() != TopAbs_EDGE )
8047 for ( size_t i = 0; i < eos._edges.size(); ++i )
8048 eos._edges[ i ]->_cosin = avgCosin;
8050 for ( size_t i = 0; i < eos._edges.size(); ++i )
8052 eos._edges[ i ]->SetNormal( avgNormal );
8053 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
8057 else // if ( isSpherical )
8059 // We suppose that centers of curvature at all points of the FACE
8060 // lie on some curve, let's call it "central curve". For all _LayerEdge's
8061 // having a common center of curvature we define the same new normal
8062 // as a sum of normals of _LayerEdge's on EDGEs among them.
8064 // get all centers of curvature for each EDGE
8066 helper.SetSubShape( convFace._face );
8067 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
8069 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
8070 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
8072 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
8074 // set adjacent FACE
8075 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
8077 // get _LayerEdge's of the EDGE
8078 TGeomID edgeID = meshDS->ShapeToIndex( edge );
8079 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
8080 if ( !eos || eos->_edges.empty() )
8082 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
8083 for ( int iV = 0; iV < 2; ++iV )
8085 TopoDS_Vertex v = helper.IthVertex( iV, edge );
8086 TGeomID vID = meshDS->ShapeToIndex( v );
8087 eos = data.GetShapeEdges( vID );
8088 vertexLEdges[ iV ] = eos->_edges[ 0 ];
8090 edgeLEdge = &vertexLEdges[0];
8091 edgeLEdgeEnd = edgeLEdge + 2;
8093 centerCurves[ iE ]._adjFace.Nullify();
8097 if ( ! eos->_toSmooth )
8098 data.SortOnEdge( edge, eos->_edges );
8099 edgeLEdge = &eos->_edges[ 0 ];
8100 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
8101 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
8102 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
8104 if ( ! eos->_sWOL.IsNull() )
8105 centerCurves[ iE ]._adjFace.Nullify();
8108 // Get curvature centers
8112 if ( edgeLEdge[0]->IsOnEdge() &&
8113 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
8115 centerCurves[ iE ].Append( center, vertexLEdges[0] );
8116 centersBox.Add( center );
8118 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
8119 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
8120 { // EDGE or VERTEXes
8121 centerCurves[ iE ].Append( center, *edgeLEdge );
8122 centersBox.Add( center );
8124 if ( edgeLEdge[-1]->IsOnEdge() &&
8125 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
8127 centerCurves[ iE ].Append( center, vertexLEdges[1] );
8128 centersBox.Add( center );
8130 centerCurves[ iE ]._isDegenerated =
8131 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
8133 } // loop on EDGES of convFace._face to set up data of centerCurves
8135 // Compute new normals for _LayerEdge's on EDGEs
8137 double avgCosin = 0;
8140 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
8142 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
8143 if ( ceCurve._isDegenerated )
8145 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
8146 vector< gp_XYZ > & newNormals = ceCurve._normals;
8147 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
8150 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
8153 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
8155 if ( isOK && !ceCurve._adjFace.IsNull() )
8157 // compute new _LayerEdge::_cosin
8158 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
8159 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8162 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
8163 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
8164 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
8170 // set new normals to _LayerEdge's of NOT degenerated central curves
8171 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8173 if ( centerCurves[ iE ]._isDegenerated )
8175 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8177 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
8178 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8181 // set new normals to _LayerEdge's of degenerated central curves
8182 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8184 if ( !centerCurves[ iE ]._isDegenerated ||
8185 centerCurves[ iE ]._ledges.size() < 3 )
8187 // new normal is an average of new normals at VERTEXes that
8188 // was computed on non-degenerated _CentralCurveOnEdge's
8189 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
8190 centerCurves[ iE ]._ledges.back ()->_normal );
8191 double sz = newNorm.Modulus();
8195 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
8196 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
8197 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
8199 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
8200 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
8201 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8205 // Find new normals for _LayerEdge's based on FACE
8208 avgCosin /= nbCosin;
8209 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
8210 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
8211 if ( id2eos != convFace._subIdToEOS.end() )
8215 _EdgesOnShape& eos = * ( id2eos->second );
8216 for ( size_t i = 0; i < eos._edges.size(); ++i )
8218 _LayerEdge* ledge = eos._edges[ i ];
8219 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
8221 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
8223 iE = iE % centerCurves.size();
8224 if ( centerCurves[ iE ]._isDegenerated )
8226 newNorm.SetCoord( 0,0,0 );
8227 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
8229 ledge->SetNormal( newNorm );
8230 ledge->_cosin = avgCosin;
8231 ledge->Set( _LayerEdge::NORMAL_UPDATED );
8238 } // not a quasi-spherical FACE
8240 // Update _LayerEdge's data according to a new normal
8242 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
8243 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
8245 id2eos = convFace._subIdToEOS.begin();
8246 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8248 _EdgesOnShape& eos = * ( id2eos->second );
8249 for ( size_t i = 0; i < eos._edges.size(); ++i )
8251 _LayerEdge* & ledge = eos._edges[ i ];
8252 double len = ledge->_len;
8253 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
8254 ledge->SetCosin( ledge->_cosin );
8255 ledge->SetNewLength( len, eos, helper );
8257 if ( eos.ShapeType() != TopAbs_FACE )
8258 for ( size_t i = 0; i < eos._edges.size(); ++i )
8260 _LayerEdge* ledge = eos._edges[ i ];
8261 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
8263 _LayerEdge* neibor = ledge->_neibors[iN];
8264 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
8266 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
8267 neibor->Set( _LayerEdge::MOVED );
8268 neibor->SetSmooLen( neibor->_len );
8272 } // loop on sub-shapes of convFace._face
8274 // Find FACEs adjacent to convFace._face that got necessity to smooth
8275 // as a result of normals modification
8277 set< _EdgesOnShape* > adjFacesToSmooth;
8278 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8280 if ( centerCurves[ iE ]._adjFace.IsNull() ||
8281 centerCurves[ iE ]._adjFaceToSmooth )
8283 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8285 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
8287 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
8292 data.AddShapesToSmooth( adjFacesToSmooth );
8297 } // loop on data._convexFaces
8302 //================================================================================
8304 * \brief Return max curvature of a FACE
8306 //================================================================================
8308 double _ConvexFace::GetMaxCurvature( _SolidData& data,
8310 BRepLProp_SLProps& surfProp,
8311 SMESH_MesherHelper& helper)
8313 double maxCurvature = 0;
8315 TopoDS_Face F = TopoDS::Face( eof._shape );
8317 const int nbTestPnt = 5;
8318 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8319 SMESH_subMeshIteratorPtr smIt = eof._subMesh->getDependsOnIterator(/*includeSelf=*/true);
8320 while ( smIt->more() )
8322 SMESH_subMesh* sm = smIt->next();
8323 const TGeomID subID = sm->GetId();
8325 // find _LayerEdge's of a sub-shape
8327 if (( eos = data.GetShapeEdges( subID )))
8328 this->_subIdToEOS.insert( make_pair( subID, eos ));
8332 // check concavity and curvature and limit data._stepSize
8333 const double minCurvature =
8334 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
8335 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
8336 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
8338 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
8339 surfProp.SetParameters( uv.X(), uv.Y() );
8340 if ( surfProp.IsCurvatureDefined() )
8342 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
8343 surfProp.MinCurvature() * oriFactor );
8344 maxCurvature = Max( maxCurvature, curvature );
8346 if ( curvature > minCurvature )
8347 this->_isTooCurved = true;
8350 } // loop on sub-shapes of the FACE
8352 return maxCurvature;
8355 //================================================================================
8357 * \brief Finds a center of curvature of a surface at a _LayerEdge
8359 //================================================================================
8361 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
8362 BRepLProp_SLProps& surfProp,
8363 SMESH_MesherHelper& helper,
8364 gp_Pnt & center ) const
8366 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
8367 surfProp.SetParameters( uv.X(), uv.Y() );
8368 if ( !surfProp.IsCurvatureDefined() )
8371 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8372 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
8373 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
8374 if ( surfCurvatureMin > surfCurvatureMax )
8375 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
8377 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
8382 //================================================================================
8384 * \brief Check that prisms are not distorted
8386 //================================================================================
8388 bool _ConvexFace::CheckPrisms() const
8391 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
8393 const _LayerEdge* edge = _simplexTestEdges[i];
8394 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
8395 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
8396 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
8398 debugMsg( "Bad simplex of _simplexTestEdges ("
8399 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
8400 << " "<< edge->_simplices[j]._nPrev->GetID()
8401 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
8408 //================================================================================
8410 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
8411 * stored in this _CentralCurveOnEdge.
8412 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
8413 * \param [in,out] newNormal - current normal at this point, to be redefined
8414 * \return bool - true if succeeded.
8416 //================================================================================
8418 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
8420 if ( this->_isDegenerated )
8423 // find two centers the given one lies between
8425 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
8427 double sl2 = 1.001 * _segLength2[ i ];
8429 double d1 = center.SquareDistance( _curvaCenters[ i ]);
8433 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
8434 if ( d2 > sl2 || d2 + d1 < 1e-100 )
8439 double r = d1 / ( d1 + d2 );
8440 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
8441 ( r ) * _ledges[ i+1 ]->_normal );
8445 double sz = newNormal.Modulus();
8454 //================================================================================
8456 * \brief Set shape members
8458 //================================================================================
8460 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
8461 const _ConvexFace& convFace,
8463 SMESH_MesherHelper& helper)
8467 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
8468 while ( const TopoDS_Shape* F = fIt->next())
8469 if ( !convFace._face.IsSame( *F ))
8471 _adjFace = TopoDS::Face( *F );
8472 _adjFaceToSmooth = false;
8473 // _adjFace already in a smoothing queue ?
8474 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
8475 _adjFaceToSmooth = eos->_toSmooth;
8480 //================================================================================
8482 * \brief Looks for intersection of it's last segment with faces
8483 * \param distance - returns shortest distance from the last node to intersection
8485 //================================================================================
8487 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
8489 const double& epsilon,
8491 const SMDS_MeshElement** intFace)
8493 vector< const SMDS_MeshElement* > suspectFaces;
8495 gp_Ax1 lastSegment = LastSegment( segLen, eos );
8496 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
8498 bool segmentIntersected = false;
8499 distance = Precision::Infinite();
8500 int iFace = -1; // intersected face
8501 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
8503 const SMDS_MeshElement* face = suspectFaces[j];
8504 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
8505 face->GetNodeIndex( _nodes[0] ) >= 0 )
8506 continue; // face sharing _LayerEdge node
8507 const int nbNodes = face->NbCornerNodes();
8508 bool intFound = false;
8510 SMDS_MeshElement::iterator nIt = face->begin_nodes();
8513 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
8517 const SMDS_MeshNode* tria[3];
8520 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
8523 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
8529 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
8530 segmentIntersected = true;
8531 if ( distance > dist )
8532 distance = dist, iFace = j;
8535 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
8539 if ( segmentIntersected )
8542 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
8543 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
8544 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
8545 << ", intersection with face ("
8546 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
8547 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
8548 << ") distance = " << distance << endl;
8552 return segmentIntersected;
8555 //================================================================================
8557 * \brief Returns a point used to check orientation of _simplices
8559 //================================================================================
8561 gp_XYZ _LayerEdge::PrevCheckPos( _EdgesOnShape* eos ) const
8563 size_t i = Is( NORMAL_UPDATED ) && IsOnFace() ? _pos.size()-2 : 0;
8565 if ( !eos || eos->_sWOL.IsNull() )
8568 if ( eos->SWOLType() == TopAbs_EDGE )
8570 return BRepAdaptor_Curve( TopoDS::Edge( eos->_sWOL )).Value( _pos[i].X() ).XYZ();
8572 //else // TopAbs_FACE
8574 return BRepAdaptor_Surface( TopoDS::Face( eos->_sWOL )).Value(_pos[i].X(), _pos[i].Y() ).XYZ();
8577 //================================================================================
8579 * \brief Returns size and direction of the last segment
8581 //================================================================================
8583 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
8585 // find two non-coincident positions
8586 gp_XYZ orig = _pos.back();
8588 int iPrev = _pos.size() - 2;
8589 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
8590 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
8591 while ( iPrev >= 0 )
8593 vec = orig - _pos[iPrev];
8594 if ( vec.SquareModulus() > tol*tol )
8604 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
8605 segDir.SetDirection( _normal );
8610 gp_Pnt pPrev = _pos[ iPrev ];
8611 if ( !eos._sWOL.IsNull() )
8613 TopLoc_Location loc;
8614 if ( eos.SWOLType() == TopAbs_EDGE )
8617 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8618 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
8622 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
8623 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
8625 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
8627 segDir.SetLocation( pPrev );
8628 segDir.SetDirection( vec );
8629 segLen = vec.Modulus();
8635 //================================================================================
8637 * \brief Return the last (or \a which) position of the target node on a FACE.
8638 * \param [in] F - the FACE this _LayerEdge is inflated along
8639 * \param [in] which - index of position
8640 * \return gp_XY - result UV
8642 //================================================================================
8644 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which ) const
8646 if ( F.IsSame( eos._sWOL )) // F is my FACE
8647 return gp_XY( _pos.back().X(), _pos.back().Y() );
8649 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
8650 return gp_XY( 1e100, 1e100 );
8652 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
8653 double f, l, u = _pos[ which < 0 ? _pos.size()-1 : which ].X();
8654 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
8655 if ( !C2d.IsNull() && f <= u && u <= l )
8656 return C2d->Value( u ).XY();
8658 return gp_XY( 1e100, 1e100 );
8661 //================================================================================
8663 * \brief Test intersection of the last segment with a given triangle
8664 * using Moller-Trumbore algorithm
8665 * Intersection is detected if distance to intersection is less than _LayerEdge._len
8667 //================================================================================
8669 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
8670 const gp_XYZ& vert0,
8671 const gp_XYZ& vert1,
8672 const gp_XYZ& vert2,
8674 const double& EPSILON) const
8676 const gp_Pnt& orig = lastSegment.Location();
8677 const gp_Dir& dir = lastSegment.Direction();
8679 /* calculate distance from vert0 to ray origin */
8680 //gp_XYZ tvec = orig.XYZ() - vert0;
8682 //if ( tvec * dir > EPSILON )
8683 // intersected face is at back side of the temporary face this _LayerEdge belongs to
8686 gp_XYZ edge1 = vert1 - vert0;
8687 gp_XYZ edge2 = vert2 - vert0;
8689 /* begin calculating determinant - also used to calculate U parameter */
8690 gp_XYZ pvec = dir.XYZ() ^ edge2;
8692 /* if determinant is near zero, ray lies in plane of triangle */
8693 double det = edge1 * pvec;
8695 const double ANGL_EPSILON = 1e-12;
8696 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
8699 /* calculate distance from vert0 to ray origin */
8700 gp_XYZ tvec = orig.XYZ() - vert0;
8702 /* calculate U parameter and test bounds */
8703 double u = ( tvec * pvec ) / det;
8704 //if (u < 0.0 || u > 1.0)
8705 if ( u < -EPSILON || u > 1.0 + EPSILON )
8708 /* prepare to test V parameter */
8709 gp_XYZ qvec = tvec ^ edge1;
8711 /* calculate V parameter and test bounds */
8712 double v = (dir.XYZ() * qvec) / det;
8713 //if ( v < 0.0 || u + v > 1.0 )
8714 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
8717 /* calculate t, ray intersects triangle */
8718 t = (edge2 * qvec) / det;
8724 //================================================================================
8726 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
8727 * neighbor _LayerEdge's by it's own inflation vector.
8728 * \param [in] eov - EOS of the VERTEX
8729 * \param [in] eos - EOS of the FACE
8730 * \param [in] step - inflation step
8731 * \param [in,out] badSmooEdges - tangled _LayerEdge's
8733 //================================================================================
8735 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
8736 const _EdgesOnShape* eos,
8738 vector< _LayerEdge* > & badSmooEdges )
8740 // check if any of _neibors is in badSmooEdges
8741 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
8742 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
8745 // get all edges to move
8747 set< _LayerEdge* > edges;
8749 // find a distance between _LayerEdge on VERTEX and its neighbors
8750 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
8752 for ( size_t i = 0; i < _neibors.size(); ++i )
8754 _LayerEdge* nEdge = _neibors[i];
8755 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
8757 edges.insert( nEdge );
8758 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
8761 // add _LayerEdge's close to curPosV
8765 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8767 _LayerEdge* edgeF = *e;
8768 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
8770 _LayerEdge* nEdge = edgeF->_neibors[i];
8771 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
8772 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
8773 edges.insert( nEdge );
8777 while ( nbE < edges.size() );
8779 // move the target node of the got edges
8781 gp_XYZ prevPosV = PrevPos();
8782 if ( eov->SWOLType() == TopAbs_EDGE )
8784 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
8785 prevPosV = curve.Value( prevPosV.X() ).XYZ();
8787 else if ( eov->SWOLType() == TopAbs_FACE )
8789 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
8790 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
8793 SMDS_FacePositionPtr fPos;
8794 //double r = 1. - Min( 0.9, step / 10. );
8795 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8797 _LayerEdge* edgeF = *e;
8798 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
8799 const gp_XYZ newPosF = curPosV + prevVF;
8800 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8801 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
8802 edgeF->_pos.back() = newPosF;
8803 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
8805 // set _curvature to make edgeF updated by putOnOffsetSurface()
8806 if ( !edgeF->_curvature )
8807 if (( fPos = edgeF->_nodes[0]->GetPosition() ))
8809 edgeF->_curvature = _Factory::NewCurvature();
8810 edgeF->_curvature->_r = 0;
8811 edgeF->_curvature->_k = 0;
8812 edgeF->_curvature->_h2lenRatio = 0;
8813 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
8816 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
8817 // SMESH_TNodeXYZ( _nodes[0] ));
8818 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8820 // _LayerEdge* edgeF = *e;
8821 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8822 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8823 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8824 // edgeF->_pos.back() = newPosF;
8825 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
8828 // smooth _LayerEdge's around moved nodes
8829 //size_t nbBadBefore = badSmooEdges.size();
8830 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8832 _LayerEdge* edgeF = *e;
8833 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
8834 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
8835 //&& !edges.count( edgeF->_neibors[j] ))
8837 _LayerEdge* edgeFN = edgeF->_neibors[j];
8838 edgeFN->Unset( SMOOTHED );
8839 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
8842 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
8843 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
8844 // int nbBadAfter = edgeFN->_simplices.size();
8846 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
8848 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
8850 // if ( nbBadAfter <= nbBad )
8852 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
8853 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8854 // edgeF->_pos.back() = newPosF;
8855 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8856 // nbBad = nbBadAfter;
8860 badSmooEdges.push_back( edgeFN );
8863 // move a bit not smoothed around moved nodes
8864 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
8866 // _LayerEdge* edgeF = badSmooEdges[i];
8867 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8868 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8869 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
8870 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
8871 // edgeF->_pos.back() = newPosF;
8872 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8876 //================================================================================
8878 * \brief Perform smooth of _LayerEdge's based on EDGE's
8879 * \retval bool - true if node has been moved
8881 //================================================================================
8883 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
8884 const TopoDS_Face& F,
8885 SMESH_MesherHelper& helper)
8887 ASSERT( IsOnEdge() );
8889 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
8890 SMESH_TNodeXYZ oldPos( tgtNode );
8891 double dist01, distNewOld;
8893 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
8894 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
8895 dist01 = p0.Distance( _2neibors->tgtNode(1) );
8897 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
8898 double lenDelta = 0;
8901 //lenDelta = _curvature->lenDelta( _len );
8902 lenDelta = _curvature->lenDeltaByDist( dist01 );
8903 newPos.ChangeCoord() += _normal * lenDelta;
8906 distNewOld = newPos.Distance( oldPos );
8910 if ( _2neibors->_plnNorm )
8912 // put newPos on the plane defined by source node and _plnNorm
8913 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
8914 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
8915 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
8917 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8918 _pos.back() = newPos.XYZ();
8922 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8923 gp_XY uv( Precision::Infinite(), 0 );
8924 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
8925 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8927 newPos = surface->Value( uv );
8928 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8931 // commented for IPAL0052478
8932 // if ( _curvature && lenDelta < 0 )
8934 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
8935 // _len -= prevPos.Distance( oldPos );
8936 // _len += prevPos.Distance( newPos );
8938 bool moved = distNewOld > dist01/50;
8940 dumpMove( tgtNode ); // debug
8945 //================================================================================
8947 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
8949 //================================================================================
8951 void _LayerEdge::SmoothWoCheck()
8953 if ( Is( DIFFICULT ))
8956 bool moved = Is( SMOOTHED );
8957 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
8958 moved = _neibors[i]->Is( SMOOTHED );
8962 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8964 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8965 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8966 _pos.back() = newPos;
8968 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
8971 //================================================================================
8973 * \brief Checks validity of _neibors on EDGEs and VERTEXes
8975 //================================================================================
8977 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
8979 if ( ! Is( NEAR_BOUNDARY ))
8984 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
8986 _LayerEdge* eN = _neibors[iN];
8987 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
8990 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) ||
8991 eN->Is( _LayerEdge::NORMAL_UPDATED ) ||
8992 eN->_pos.size() != _pos.size() );
8994 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
8995 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
8996 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
8997 if ( eN->_nodes.size() > 1 &&
8998 eN->_simplices[i].Includes( _nodes.back() ) &&
8999 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
9004 badNeibors->push_back( eN );
9005 debugMsg("Bad boundary simplex ( "
9006 << " "<< eN->_nodes[0]->GetID()
9007 << " "<< eN->_nodes.back()->GetID()
9008 << " "<< eN->_simplices[i]._nPrev->GetID()
9009 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
9020 //================================================================================
9022 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9023 * \retval int - nb of bad simplices around this _LayerEdge
9025 //================================================================================
9027 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
9029 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
9030 return 0; // shape of simplices not changed
9031 if ( _simplices.size() < 2 )
9032 return 0; // _LayerEdge inflated along EDGE or FACE
9034 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
9037 const gp_XYZ& curPos = _pos.back();
9038 const gp_XYZ& prevPos = _pos[0]; //PrevPos();
9040 // quality metrics (orientation) of tetras around _tgtNode
9042 double vol, minVolBefore = 1e100;
9043 for ( size_t i = 0; i < _simplices.size(); ++i )
9045 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9046 minVolBefore = Min( minVolBefore, vol );
9048 int nbBad = _simplices.size() - nbOkBefore;
9050 bool bndNeedSmooth = false;
9052 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
9056 // evaluate min angle
9057 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
9059 size_t nbGoodAngles = _simplices.size();
9061 for ( size_t i = 0; i < _simplices.size(); ++i )
9063 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
9066 if ( nbGoodAngles == _simplices.size() )
9072 if ( Is( ON_CONCAVE_FACE ))
9075 if ( step % 2 == 0 )
9078 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9080 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
9081 _smooFunction = _funs[ FUN_CENTROIDAL ];
9083 _smooFunction = _funs[ FUN_LAPLACIAN ];
9086 // compute new position for the last _pos using different _funs
9089 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9092 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9093 else if ( _funs[ iFun ] == _smooFunction )
9094 continue; // _smooFunction again
9095 else if ( step > 1 )
9096 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9098 break; // let "easy" functions improve elements around distorted ones
9102 double delta = _curvature->lenDelta( _len );
9104 newPos += _normal * delta;
9107 double segLen = _normal * ( newPos - prevPos );
9108 if ( segLen + delta > 0 )
9109 newPos += _normal * delta;
9111 // double segLenChange = _normal * ( curPos - newPos );
9112 // newPos += 0.5 * _normal * segLenChange;
9116 double minVolAfter = 1e100;
9117 for ( size_t i = 0; i < _simplices.size(); ++i )
9119 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9120 minVolAfter = Min( minVolAfter, vol );
9123 if ( nbOkAfter < nbOkBefore )
9127 ( nbOkAfter == nbOkBefore ) &&
9128 ( minVolAfter <= minVolBefore ))
9131 nbBad = _simplices.size() - nbOkAfter;
9132 minVolBefore = minVolAfter;
9133 nbOkBefore = nbOkAfter;
9136 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9137 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9138 _pos.back() = newPos;
9140 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9141 << (nbBad ? " --BAD" : ""));
9145 continue; // look for a better function
9151 } // loop on smoothing functions
9153 if ( moved ) // notify _neibors
9156 for ( size_t i = 0; i < _neibors.size(); ++i )
9157 if ( !_neibors[i]->Is( MOVED ))
9159 _neibors[i]->Set( MOVED );
9160 toSmooth.push_back( _neibors[i] );
9167 //================================================================================
9169 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9170 * \retval int - nb of bad simplices around this _LayerEdge
9172 //================================================================================
9174 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
9176 if ( !_smooFunction )
9177 return 0; // _LayerEdge inflated along EDGE or FACE
9179 return 0; // not inflated
9181 const gp_XYZ& curPos = _pos.back();
9182 const gp_XYZ& prevPos = _pos[0]; //PrevCheckPos();
9184 // quality metrics (orientation) of tetras around _tgtNode
9186 double vol, minVolBefore = 1e100;
9187 for ( size_t i = 0; i < _simplices.size(); ++i )
9189 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9190 minVolBefore = Min( minVolBefore, vol );
9192 int nbBad = _simplices.size() - nbOkBefore;
9194 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9196 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
9197 _smooFunction = _funs[ FUN_LAPLACIAN ];
9198 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
9199 _smooFunction = _funs[ FUN_CENTROIDAL ];
9202 // compute new position for the last _pos using different _funs
9204 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9207 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9208 else if ( _funs[ iFun ] == _smooFunction )
9209 continue; // _smooFunction again
9210 else if ( step > 1 )
9211 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9213 break; // let "easy" functions improve elements around distorted ones
9217 double delta = _curvature->lenDelta( _len );
9219 newPos += _normal * delta;
9222 double segLen = _normal * ( newPos - prevPos );
9223 if ( segLen + delta > 0 )
9224 newPos += _normal * delta;
9226 // double segLenChange = _normal * ( curPos - newPos );
9227 // newPos += 0.5 * _normal * segLenChange;
9231 double minVolAfter = 1e100;
9232 for ( size_t i = 0; i < _simplices.size(); ++i )
9234 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9235 minVolAfter = Min( minVolAfter, vol );
9238 if ( nbOkAfter < nbOkBefore )
9240 if (( isConcaveFace || findBest ) &&
9241 ( nbOkAfter == nbOkBefore ) &&
9242 ( minVolAfter <= minVolBefore )
9246 nbBad = _simplices.size() - nbOkAfter;
9247 minVolBefore = minVolAfter;
9248 nbOkBefore = nbOkAfter;
9250 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9251 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9252 _pos.back() = newPos;
9254 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9255 << ( nbBad ? "--BAD" : ""));
9257 // commented for IPAL0052478
9258 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
9259 // _len += prevPos.Distance(newPos);
9261 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
9263 //_smooFunction = _funs[ iFun ];
9264 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
9265 // << "\t nbBad: " << _simplices.size() - nbOkAfter
9266 // << " minVol: " << minVolAfter
9267 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
9269 continue; // look for a better function
9275 } // loop on smoothing functions
9280 //================================================================================
9282 * \brief Chooses a smoothing technique giving a position most close to an initial one.
9283 * For a correct result, _simplices must contain nodes lying on geometry.
9285 //================================================================================
9287 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
9288 const TNode2Edge& /*n2eMap*/)
9290 if ( _smooFunction ) return;
9292 // use smoothNefPolygon() near concaveVertices
9293 if ( !concaveVertices.empty() )
9295 _smooFunction = _funs[ FUN_CENTROIDAL ];
9297 Set( ON_CONCAVE_FACE );
9299 for ( size_t i = 0; i < _simplices.size(); ++i )
9301 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
9303 _smooFunction = _funs[ FUN_NEFPOLY ];
9305 // set FUN_CENTROIDAL to neighbor edges
9306 for ( i = 0; i < _neibors.size(); ++i )
9308 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
9310 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
9317 // // this choice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
9318 // // where the nodes are smoothed too far along a sphere thus creating
9319 // // inverted _simplices
9320 // double dist[theNbSmooFuns];
9321 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
9322 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
9324 // double minDist = Precision::Infinite();
9325 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
9326 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
9328 // gp_Pnt newP = (this->*_funs[i])();
9329 // dist[i] = p.SquareDistance( newP );
9330 // if ( dist[i]*coef[i] < minDist )
9332 // _smooFunction = _funs[i];
9333 // minDist = dist[i]*coef[i];
9339 _smooFunction = _funs[ FUN_LAPLACIAN ];
9342 // for ( size_t i = 0; i < _simplices.size(); ++i )
9343 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
9344 // if ( minDim == 0 )
9345 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9346 // else if ( minDim == 1 )
9347 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9351 // for ( int i = 0; i < FUN_NB; ++i )
9353 // //cout << dist[i] << " ";
9354 // if ( _smooFunction == _funs[i] ) {
9356 // //debugMsg( fNames[i] );
9360 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
9363 //================================================================================
9365 * \brief Returns a name of _SmooFunction
9367 //================================================================================
9369 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
9372 fun = _smooFunction;
9373 for ( int i = 0; i < theNbSmooFuns; ++i )
9374 if ( fun == _funs[i] )
9377 return theNbSmooFuns;
9380 //================================================================================
9382 * \brief Computes a new node position using Laplacian smoothing
9384 //================================================================================
9386 gp_XYZ _LayerEdge::smoothLaplacian()
9388 gp_XYZ newPos (0,0,0);
9389 for ( size_t i = 0; i < _simplices.size(); ++i )
9390 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9391 newPos /= _simplices.size();
9396 //================================================================================
9398 * \brief Computes a new node position using angular-based smoothing
9400 //================================================================================
9402 gp_XYZ _LayerEdge::smoothAngular()
9404 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
9405 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
9406 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
9408 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9410 for ( size_t i = 0; i < _simplices.size(); ++i )
9412 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9413 edgeDir.push_back( p - pPrev );
9414 edgeSize.push_back( edgeDir.back().Magnitude() );
9415 if ( edgeSize.back() < numeric_limits<double>::min() )
9418 edgeSize.pop_back();
9422 edgeDir.back() /= edgeSize.back();
9423 points.push_back( p );
9428 edgeDir.push_back ( edgeDir[0] );
9429 edgeSize.push_back( edgeSize[0] );
9430 pN /= points.size();
9432 gp_XYZ newPos(0,0,0);
9434 for ( size_t i = 0; i < points.size(); ++i )
9436 gp_Vec toN = pN - points[i];
9437 double toNLen = toN.Magnitude();
9438 if ( toNLen < numeric_limits<double>::min() )
9443 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
9444 double bisecLen = bisec.SquareMagnitude();
9445 if ( bisecLen < numeric_limits<double>::min() )
9447 gp_Vec norm = edgeDir[i] ^ toN;
9448 bisec = norm ^ edgeDir[i];
9449 bisecLen = bisec.SquareMagnitude();
9451 bisecLen = Sqrt( bisecLen );
9455 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
9456 sumSize += bisecLen;
9458 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
9459 sumSize += ( edgeSize[i] + edgeSize[i+1] );
9465 // project newPos to an average plane
9467 gp_XYZ norm(0,0,0); // plane normal
9468 points.push_back( points[0] );
9469 for ( size_t i = 1; i < points.size(); ++i )
9471 gp_XYZ vec1 = points[ i-1 ] - pN;
9472 gp_XYZ vec2 = points[ i ] - pN;
9473 gp_XYZ cross = vec1 ^ vec2;
9476 if ( cross * norm < numeric_limits<double>::min() )
9477 norm += cross.Reversed();
9481 catch (Standard_Failure&) { // if |cross| == 0.
9484 gp_XYZ vec = newPos - pN;
9485 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
9486 newPos = newPos - r * norm;
9491 //================================================================================
9493 * \brief Computes a new node position using weighted node positions
9495 //================================================================================
9497 gp_XYZ _LayerEdge::smoothLengthWeighted()
9499 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
9500 vector< gp_XYZ > points; points. reserve( _simplices.size() );
9502 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9503 for ( size_t i = 0; i < _simplices.size(); ++i )
9505 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9506 edgeSize.push_back( ( p - pPrev ).Modulus() );
9507 if ( edgeSize.back() < numeric_limits<double>::min() )
9509 edgeSize.pop_back();
9513 points.push_back( p );
9517 edgeSize.push_back( edgeSize[0] );
9519 gp_XYZ newPos(0,0,0);
9521 for ( size_t i = 0; i < points.size(); ++i )
9523 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
9524 sumSize += edgeSize[i] + edgeSize[i+1];
9530 //================================================================================
9532 * \brief Computes a new node position using angular-based smoothing
9534 //================================================================================
9536 gp_XYZ _LayerEdge::smoothCentroidal()
9538 gp_XYZ newPos(0,0,0);
9539 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
9541 for ( size_t i = 0; i < _simplices.size(); ++i )
9543 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9544 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
9545 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
9546 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
9549 newPos += gc * size;
9556 //================================================================================
9558 * \brief Computes a new node position located inside a Nef polygon
9560 //================================================================================
9562 gp_XYZ _LayerEdge::smoothNefPolygon()
9563 #ifdef OLD_NEF_POLYGON
9565 gp_XYZ newPos(0,0,0);
9567 // get a plane to search a solution on
9569 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9571 const double tol = numeric_limits<double>::min();
9572 gp_XYZ center(0,0,0);
9573 for ( i = 0; i < _simplices.size(); ++i )
9575 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
9576 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
9577 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9579 vecs.back() = vecs[0];
9580 center /= _simplices.size();
9582 gp_XYZ zAxis(0,0,0);
9583 for ( i = 0; i < _simplices.size(); ++i )
9584 zAxis += vecs[i] ^ vecs[i+1];
9587 for ( i = 0; i < _simplices.size(); ++i )
9590 if ( yAxis.SquareModulus() > tol )
9593 gp_XYZ xAxis = yAxis ^ zAxis;
9594 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9595 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9596 // p0.Distance( _simplices[2]._nPrev ));
9597 // gp_XYZ center = smoothLaplacian();
9598 // gp_XYZ xAxis, yAxis, zAxis;
9599 // for ( i = 0; i < _simplices.size(); ++i )
9601 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9602 // if ( xAxis.SquareModulus() > tol*tol )
9605 // for ( i = 1; i < _simplices.size(); ++i )
9607 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9608 // zAxis = xAxis ^ yAxis;
9609 // if ( zAxis.SquareModulus() > tol*tol )
9612 // if ( i == _simplices.size() ) return newPos;
9614 yAxis = zAxis ^ xAxis;
9615 xAxis /= xAxis.Modulus();
9616 yAxis /= yAxis.Modulus();
9618 // get half-planes of _simplices
9620 vector< _halfPlane > halfPlns( _simplices.size() );
9622 for ( size_t i = 0; i < _simplices.size(); ++i )
9624 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9625 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
9626 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9627 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9628 gp_XY vec12 = p2 - p1;
9629 double dist12 = vec12.Modulus();
9633 halfPlns[ nbHP ]._pos = p1;
9634 halfPlns[ nbHP ]._dir = vec12;
9635 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9639 // intersect boundaries of half-planes, define state of intersection points
9640 // in relation to all half-planes and calculate internal point of a 2D polygon
9643 gp_XY newPos2D (0,0);
9645 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9646 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9647 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9649 vector< vector< TIntPntState > > allIntPnts( nbHP );
9650 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9652 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9653 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9655 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9656 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9659 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9661 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9663 if ( iHP1 == iHP2 ) continue;
9665 TIntPntState & ips1 = intPnts1[ iHP2 ];
9666 if ( ips1.second == UNDEF )
9668 // find an intersection point of boundaries of iHP1 and iHP2
9670 if ( iHP2 == iPrev ) // intersection with neighbors is known
9671 ips1.first = halfPlns[ iHP1 ]._pos;
9672 else if ( iHP2 == iNext )
9673 ips1.first = halfPlns[ iHP2 ]._pos;
9674 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9675 ips1.second = NO_INT;
9677 // classify the found intersection point
9678 if ( ips1.second != NO_INT )
9680 ips1.second = NOT_OUT;
9681 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9682 if ( i != iHP1 && i != iHP2 &&
9683 halfPlns[ i ].IsOut( ips1.first, tol ))
9684 ips1.second = IS_OUT;
9686 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9687 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9688 TIntPntState & ips2 = intPnts2[ iHP1 ];
9691 if ( ips1.second == NOT_OUT )
9694 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9698 // find a NOT_OUT segment of boundary which is located between
9699 // two NOT_OUT int points
9702 continue; // no such a segment
9706 // sort points along the boundary
9707 map< double, TIntPntState* > ipsByParam;
9708 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9710 TIntPntState & ips1 = intPnts1[ iHP2 ];
9711 if ( ips1.second != NO_INT )
9713 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9714 double param = op * halfPlns[ iHP1 ]._dir;
9715 ipsByParam.insert( make_pair( param, & ips1 ));
9718 // look for two neighboring NOT_OUT points
9720 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9721 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9723 TIntPntState & ips1 = *(u2ips->second);
9724 if ( ips1.second == NOT_OUT )
9725 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9726 else if ( nbNotOut >= 2 )
9733 if ( nbNotOut >= 2 )
9735 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9738 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9745 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9754 #else // OLD_NEF_POLYGON
9755 { ////////////////////////////////// NEW
9756 gp_XYZ newPos(0,0,0);
9758 // get a plane to search a solution on
9761 gp_XYZ center(0,0,0);
9762 for ( i = 0; i < _simplices.size(); ++i )
9763 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9764 center /= _simplices.size();
9766 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9767 for ( i = 0; i < _simplices.size(); ++i )
9768 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9769 vecs.back() = vecs[0];
9771 const double tol = numeric_limits<double>::min();
9772 gp_XYZ zAxis(0,0,0);
9773 for ( i = 0; i < _simplices.size(); ++i )
9775 gp_XYZ cross = vecs[i] ^ vecs[i+1];
9778 if ( cross * zAxis < tol )
9779 zAxis += cross.Reversed();
9783 catch (Standard_Failure) { // if |cross| == 0.
9788 for ( i = 0; i < _simplices.size(); ++i )
9791 if ( yAxis.SquareModulus() > tol )
9794 gp_XYZ xAxis = yAxis ^ zAxis;
9795 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9796 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9797 // p0.Distance( _simplices[2]._nPrev ));
9798 // gp_XYZ center = smoothLaplacian();
9799 // gp_XYZ xAxis, yAxis, zAxis;
9800 // for ( i = 0; i < _simplices.size(); ++i )
9802 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9803 // if ( xAxis.SquareModulus() > tol*tol )
9806 // for ( i = 1; i < _simplices.size(); ++i )
9808 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9809 // zAxis = xAxis ^ yAxis;
9810 // if ( zAxis.SquareModulus() > tol*tol )
9813 // if ( i == _simplices.size() ) return newPos;
9815 yAxis = zAxis ^ xAxis;
9816 xAxis /= xAxis.Modulus();
9817 yAxis /= yAxis.Modulus();
9819 // get half-planes of _simplices
9821 vector< _halfPlane > halfPlns( _simplices.size() );
9823 for ( size_t i = 0; i < _simplices.size(); ++i )
9825 const gp_XYZ& OP1 = vecs[ i ];
9826 const gp_XYZ& OP2 = vecs[ i+1 ];
9827 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9828 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9829 gp_XY vec12 = p2 - p1;
9830 double dist12 = vec12.Modulus();
9834 halfPlns[ nbHP ]._pos = p1;
9835 halfPlns[ nbHP ]._dir = vec12;
9836 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9840 // intersect boundaries of half-planes, define state of intersection points
9841 // in relation to all half-planes and calculate internal point of a 2D polygon
9844 gp_XY newPos2D (0,0);
9846 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9847 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9848 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9850 vector< vector< TIntPntState > > allIntPnts( nbHP );
9851 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9853 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9854 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9856 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9857 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9860 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9862 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9864 if ( iHP1 == iHP2 ) continue;
9866 TIntPntState & ips1 = intPnts1[ iHP2 ];
9867 if ( ips1.second == UNDEF )
9869 // find an intersection point of boundaries of iHP1 and iHP2
9871 if ( iHP2 == iPrev ) // intersection with neighbors is known
9872 ips1.first = halfPlns[ iHP1 ]._pos;
9873 else if ( iHP2 == iNext )
9874 ips1.first = halfPlns[ iHP2 ]._pos;
9875 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9876 ips1.second = NO_INT;
9878 // classify the found intersection point
9879 if ( ips1.second != NO_INT )
9881 ips1.second = NOT_OUT;
9882 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9883 if ( i != iHP1 && i != iHP2 &&
9884 halfPlns[ i ].IsOut( ips1.first, tol ))
9885 ips1.second = IS_OUT;
9887 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9888 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9889 TIntPntState & ips2 = intPnts2[ iHP1 ];
9892 if ( ips1.second == NOT_OUT )
9895 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9899 // find a NOT_OUT segment of boundary which is located between
9900 // two NOT_OUT int points
9903 continue; // no such a segment
9907 // sort points along the boundary
9908 map< double, TIntPntState* > ipsByParam;
9909 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9911 TIntPntState & ips1 = intPnts1[ iHP2 ];
9912 if ( ips1.second != NO_INT )
9914 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9915 double param = op * halfPlns[ iHP1 ]._dir;
9916 ipsByParam.insert( make_pair( param, & ips1 ));
9919 // look for two neighboring NOT_OUT points
9921 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9922 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9924 TIntPntState & ips1 = *(u2ips->second);
9925 if ( ips1.second == NOT_OUT )
9926 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9927 else if ( nbNotOut >= 2 )
9934 if ( nbNotOut >= 2 )
9936 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9939 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9946 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9955 #endif // OLD_NEF_POLYGON
9957 //================================================================================
9959 * \brief Add a new segment to _LayerEdge during inflation
9961 //================================================================================
9963 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
9968 if ( len > _maxLen )
9971 Block( eos.GetData() );
9973 const double lenDelta = len - _len;
9974 // if ( lenDelta < 0 )
9976 if ( lenDelta < len * 1e-3 )
9978 Block( eos.GetData() );
9982 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9983 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
9985 if ( eos._hyp.IsOffsetMethod() )
9989 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
9990 while ( faceIt->more() )
9992 const SMDS_MeshElement* face = faceIt->next();
9993 if ( !eos.GetNormal( face, faceNorm ))
9996 // translate plane of a face
9997 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
9999 // find point of intersection of the face plane located at baryCenter
10000 // and _normal located at newXYZ
10001 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
10002 double dot = ( faceNorm.XYZ() * _normal );
10003 if ( dot < std::numeric_limits<double>::min() )
10004 dot = lenDelta * 1e-3;
10005 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
10006 newXYZ += step * _normal;
10008 _lenFactor = _normal * ( newXYZ - oldXYZ ) / lenDelta; // _lenFactor is used in InvalidateStep()
10012 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
10015 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
10016 _pos.push_back( newXYZ );
10018 if ( !eos._sWOL.IsNull() )
10019 if ( !UpdatePositionOnSWOL( n, 2*lenDelta, eos, helper ))
10021 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
10023 Block( eos.GetData() );
10030 if ( eos.ShapeType() != TopAbs_FACE )
10032 for ( size_t i = 0; i < _neibors.size(); ++i )
10033 //if ( _len > _neibors[i]->GetSmooLen() )
10034 _neibors[i]->Set( MOVED );
10038 dumpMove( n ); //debug
10042 //================================================================================
10044 * \brief Update last position on SWOL by projecting node on SWOL
10046 //================================================================================
10048 bool _LayerEdge::UpdatePositionOnSWOL( SMDS_MeshNode* n,
10050 _EdgesOnShape& eos,
10051 SMESH_MesherHelper& helper )
10055 if ( eos.SWOLType() == TopAbs_EDGE )
10057 double u = Precision::Infinite(); // to force projection w/o distance check
10058 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u, tol, /*force=*/true, distXYZ );
10059 _pos.back().SetCoord( u, 0, 0 );
10060 if ( _nodes.size() > 1 && uvOK )
10062 SMDS_EdgePositionPtr pos = n->GetPosition();
10063 pos->SetUParameter( u );
10066 else // TopAbs_FACE
10068 gp_XY uv( Precision::Infinite(), 0 );
10069 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv, tol, /*force=*/true, distXYZ );
10070 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
10071 if ( _nodes.size() > 1 && uvOK )
10073 SMDS_FacePositionPtr pos = n->GetPosition();
10074 pos->SetUParameter( uv.X() );
10075 pos->SetVParameter( uv.Y() );
10080 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
10085 //================================================================================
10087 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
10089 //================================================================================
10091 void _LayerEdge::Block( _SolidData& data )
10093 //if ( Is( BLOCKED )) return;
10096 SMESH_Comment msg( "#BLOCK shape=");
10097 msg << data.GetShapeEdges( this )->_shapeID
10098 << ", nodes " << _nodes[0]->GetID() << ", " << _nodes.back()->GetID();
10099 dumpCmd( msg + " -- BEGIN");
10102 std::queue<_LayerEdge*> queue;
10103 queue.push( this );
10105 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
10106 while ( !queue.empty() )
10108 _LayerEdge* edge = queue.front(); queue.pop();
10109 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
10110 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
10111 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
10113 _LayerEdge* neibor = edge->_neibors[iN];
10114 if ( neibor->_maxLen < edge->_maxLen * 1.01 )
10116 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
10117 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
10118 double minDist = pSrc.SquareDistance( pSrcN );
10119 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
10120 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
10121 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
10122 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
10123 //if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() ) viscous_layers_00/A3
10125 //newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
10126 // newMaxLen *= Min( edge->_lenFactor / neibor->_lenFactor,
10127 // neibor->_lenFactor / edge->_lenFactor );
10129 if ( neibor->_maxLen > newMaxLen )
10131 neibor->SetMaxLen( newMaxLen );
10132 if ( neibor->_maxLen < neibor->_len )
10134 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
10135 int lastStep = neibor->Is( BLOCKED ) ? 1 : 0;
10136 while ( neibor->_len > neibor->_maxLen &&
10137 neibor->NbSteps() > lastStep )
10138 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
10139 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
10140 //neibor->Block( data );
10142 queue.push( neibor );
10146 dumpCmd( msg + " -- END");
10149 //================================================================================
10151 * \brief Remove last inflation step
10153 //================================================================================
10155 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
10157 if ( _pos.size() > curStep && _nodes.size() > 1 )
10159 _pos.resize( curStep );
10161 gp_Pnt nXYZ = _pos.back();
10162 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
10163 SMESH_TNodeXYZ curXYZ( n );
10164 if ( !eos._sWOL.IsNull() )
10166 TopLoc_Location loc;
10167 if ( eos.SWOLType() == TopAbs_EDGE )
10169 SMDS_EdgePositionPtr pos = n->GetPosition();
10170 pos->SetUParameter( nXYZ.X() );
10172 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
10173 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
10177 SMDS_FacePositionPtr pos = n->GetPosition();
10178 pos->SetUParameter( nXYZ.X() );
10179 pos->SetVParameter( nXYZ.Y() );
10180 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
10181 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
10184 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
10187 if ( restoreLength )
10189 if ( NbSteps() == 0 )
10191 else if ( IsOnFace() && Is( MOVED ))
10192 _len = ( nXYZ.XYZ() - SMESH_NodeXYZ( _nodes[0] )) * _normal;
10194 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
10200 //================================================================================
10202 * \brief Return index of a _pos distant from _normal
10204 //================================================================================
10206 int _LayerEdge::GetSmoothedPos( const double tol )
10209 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
10211 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
10212 if ( normDist > tol * tol )
10218 //================================================================================
10220 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
10222 //================================================================================
10224 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
10226 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
10229 // find the 1st smoothed _pos
10230 int iSmoothed = GetSmoothedPos( tol );
10231 if ( !iSmoothed ) return;
10233 gp_XYZ normal = _normal;
10234 if ( Is( NORMAL_UPDATED ))
10237 for ( size_t i = 0; i < _neibors.size(); ++i )
10239 if ( _neibors[i]->IsOnFace() )
10241 double dot = _normal * _neibors[i]->_normal;
10242 if ( dot < minDot )
10244 normal = _neibors[i]->_normal;
10249 if ( minDot == 1. )
10250 for ( size_t i = 1; i < _pos.size(); ++i )
10252 normal = _pos[i] - _pos[0];
10253 double size = normal.Modulus();
10254 if ( size > RealSmall() )
10261 const double r = 0.2;
10262 for ( int iter = 0; iter < 50; ++iter )
10265 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
10267 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
10268 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
10270 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
10271 double newLen = ( 1-r ) * midLen + r * segLen[i];
10272 const_cast< double& >( segLen[i] ) = newLen;
10273 // check angle between normal and (_pos[i+1], _pos[i] )
10274 gp_XYZ posDir = _pos[i+1] - _pos[i];
10275 double size = posDir.SquareModulus();
10276 if ( size > RealSmall() )
10277 minDot = Min( minDot, ( normal * posDir ) * ( normal * posDir ) / size );
10279 if ( minDot > 0.5 * 0.5 )
10285 //================================================================================
10287 * \brief Print flags
10289 //================================================================================
10291 std::string _LayerEdge::DumpFlags() const
10293 SMESH_Comment dump;
10294 for ( int flag = 1; flag < 0x1000000; flag *= 2 )
10295 if ( _flags & flag )
10297 EFlags f = (EFlags) flag;
10299 case TO_SMOOTH: dump << "TO_SMOOTH"; break;
10300 case MOVED: dump << "MOVED"; break;
10301 case SMOOTHED: dump << "SMOOTHED"; break;
10302 case DIFFICULT: dump << "DIFFICULT"; break;
10303 case ON_CONCAVE_FACE: dump << "ON_CONCAVE_FACE"; break;
10304 case BLOCKED: dump << "BLOCKED"; break;
10305 case INTERSECTED: dump << "INTERSECTED"; break;
10306 case NORMAL_UPDATED: dump << "NORMAL_UPDATED"; break;
10307 case UPD_NORMAL_CONV: dump << "UPD_NORMAL_CONV"; break;
10308 case MARKED: dump << "MARKED"; break;
10309 case MULTI_NORMAL: dump << "MULTI_NORMAL"; break;
10310 case NEAR_BOUNDARY: dump << "NEAR_BOUNDARY"; break;
10311 case SMOOTHED_C1: dump << "SMOOTHED_C1"; break;
10312 case DISTORTED: dump << "DISTORTED"; break;
10313 case RISKY_SWOL: dump << "RISKY_SWOL"; break;
10314 case SHRUNK: dump << "SHRUNK"; break;
10315 case UNUSED_FLAG: dump << "UNUSED_FLAG"; break;
10319 cout << dump << endl;
10324 //================================================================================
10326 * \brief Create layers of prisms
10328 //================================================================================
10330 bool _ViscousBuilder::refine(_SolidData& data)
10332 SMESH_MesherHelper& helper = data.GetHelper();
10333 helper.SetElementsOnShape(false);
10335 Handle(Geom_Curve) curve;
10336 Handle(ShapeAnalysis_Surface) surface;
10337 TopoDS_Edge geomEdge;
10338 TopoDS_Face geomFace;
10339 TopLoc_Location loc;
10342 vector< gp_XYZ > pos3D;
10343 bool isOnEdge, isTooConvexFace = false;
10344 TGeomID prevBaseId = -1;
10345 TNode2Edge* n2eMap = 0;
10346 TNode2Edge::iterator n2e;
10348 // Create intermediate nodes on each _LayerEdge
10350 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
10352 _EdgesOnShape& eos = data._edgesOnShape[iS];
10353 if ( eos._edges.empty() ) continue;
10355 if ( eos._edges[0]->_nodes.size() < 2 )
10356 continue; // on _noShrinkShapes
10358 // get data of a shrink shape
10360 geomEdge.Nullify(); geomFace.Nullify();
10361 curve.Nullify(); surface.Nullify();
10362 if ( !eos._sWOL.IsNull() )
10364 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
10367 geomEdge = TopoDS::Edge( eos._sWOL );
10368 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
10372 geomFace = TopoDS::Face( eos._sWOL );
10373 surface = helper.GetSurface( geomFace );
10376 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
10378 geomFace = TopoDS::Face( eos._shape );
10379 surface = helper.GetSurface( geomFace );
10380 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
10381 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
10382 eos._eosC1[ i ]->_toSmooth = true;
10384 isTooConvexFace = false;
10385 if ( _ConvexFace* cf = data.GetConvexFace( eos._shapeID ))
10386 isTooConvexFace = cf->_isTooCurved;
10389 vector< double > segLen;
10390 for ( size_t i = 0; i < eos._edges.size(); ++i )
10392 _LayerEdge& edge = *eos._edges[i];
10393 if ( edge._pos.size() < 2 )
10396 // get accumulated length of segments
10397 segLen.resize( edge._pos.size() );
10399 if ( eos._sWOL.IsNull() )
10401 bool useNormal = true;
10402 bool usePos = false;
10403 bool smoothed = false;
10404 double preci = 0.1 * edge._len;
10405 if ( eos._toSmooth && edge._pos.size() > 2 )
10407 smoothed = edge.GetSmoothedPos( preci );
10411 if ( !surface.IsNull() && !isTooConvexFace ) // edge smoothed on FACE
10413 useNormal = usePos = false;
10414 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
10415 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
10417 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
10418 if ( surface->Gap() < 2. * edge._len )
10419 segLen[j] = surface->Gap();
10425 else if ( !edge.Is( _LayerEdge::NORMAL_UPDATED ))
10427 #ifndef __NODES_AT_POS
10428 useNormal = usePos = false;
10429 edge._pos[1] = edge._pos.back();
10430 edge._pos.resize( 2 );
10431 segLen.resize( 2 );
10432 segLen[ 1 ] = edge._len;
10435 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
10437 useNormal = usePos = false;
10438 _LayerEdge tmpEdge; // get original _normal
10439 tmpEdge._nodes.push_back( edge._nodes[0] );
10440 if ( !setEdgeData( tmpEdge, eos, helper, data ))
10443 for ( size_t j = 1; j < edge._pos.size(); ++j )
10444 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
10448 for ( size_t j = 1; j < edge._pos.size(); ++j )
10449 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
10453 for ( size_t j = 1; j < edge._pos.size(); ++j )
10454 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
10458 bool swapped = ( edge._pos.size() > 2 );
10462 for ( size_t j = 1; j < edge._pos.size()-1; ++j )
10463 if ( segLen[j] > segLen.back() )
10465 segLen.erase( segLen.begin() + j );
10466 edge._pos.erase( edge._pos.begin() + j );
10469 else if ( segLen[j] < segLen[j-1] )
10471 std::swap( segLen[j], segLen[j-1] );
10472 std::swap( edge._pos[j], edge._pos[j-1] );
10477 // smooth a path formed by edge._pos
10478 #ifndef __NODES_AT_POS
10479 if (( smoothed ) /*&&
10480 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
10481 edge.SmoothPos( segLen, preci );
10484 else if ( eos._isRegularSWOL ) // usual SWOL
10486 if ( edge.Is( _LayerEdge::SMOOTHED ))
10488 SMESH_NodeXYZ p0( edge._nodes[0] );
10489 for ( size_t j = 1; j < edge._pos.size(); ++j )
10491 gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10492 segLen[j] = ( pj - p0 ) * edge._normal;
10497 for ( size_t j = 1; j < edge._pos.size(); ++j )
10498 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
10501 else // SWOL is surface with singularities or irregularly parametrized curve
10503 pos3D.resize( edge._pos.size() );
10505 if ( !surface.IsNull() )
10506 for ( size_t j = 0; j < edge._pos.size(); ++j )
10507 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10508 else if ( !curve.IsNull() )
10509 for ( size_t j = 0; j < edge._pos.size(); ++j )
10510 pos3D[j] = curve->Value( edge._pos[j].X() ).XYZ();
10512 for ( size_t j = 1; j < edge._pos.size(); ++j )
10513 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
10516 // allocate memory for new nodes if it is not yet refined
10517 const SMDS_MeshNode* tgtNode = edge._nodes.back();
10518 if ( edge._nodes.size() == 2 )
10520 #ifdef __NODES_AT_POS
10521 int nbNodes = edge._pos.size();
10523 int nbNodes = eos._hyp.GetNumberLayers() + 1;
10525 edge._nodes.resize( nbNodes, 0 );
10526 edge._nodes[1] = 0;
10527 edge._nodes.back() = tgtNode;
10529 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
10530 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
10531 if ( baseShapeId != prevBaseId )
10533 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
10534 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
10535 prevBaseId = baseShapeId;
10537 _LayerEdge* edgeOnSameNode = 0;
10538 bool useExistingPos = false;
10539 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
10541 edgeOnSameNode = n2e->second;
10542 useExistingPos = ( edgeOnSameNode->_len < edge._len ||
10543 segLen[0] == segLen.back() ); // too short inflation step (bos #20643)
10544 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
10545 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
10548 SMDS_EdgePositionPtr epos = lastPos;
10549 epos->SetUParameter( otherTgtPos.X() );
10553 SMDS_FacePositionPtr fpos = lastPos;
10554 fpos->SetUParameter( otherTgtPos.X() );
10555 fpos->SetVParameter( otherTgtPos.Y() );
10559 // create intermediate nodes
10560 const double h0 = eos._hyp.Get1stLayerThickness( segLen.back() );
10561 const double zeroLen = std::numeric_limits<double>::min();
10562 double hSum = 0, hi = h0/eos._hyp.GetStretchFactor();
10564 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
10566 // compute an intermediate position
10567 hi *= eos._hyp.GetStretchFactor();
10569 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
10571 int iPrevSeg = iSeg-1;
10572 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
10574 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
10575 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
10576 #ifdef __NODES_AT_POS
10577 pos = edge._pos[ iStep ];
10579 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
10580 if ( !eos._sWOL.IsNull() )
10582 // compute XYZ by parameters <pos>
10587 pos = curve->Value( u ).Transformed(loc);
10589 else if ( eos._isRegularSWOL )
10591 uv.SetCoord( pos.X(), pos.Y() );
10593 pos = surface->Value( pos.X(), pos.Y() );
10597 uv.SetCoord( pos.X(), pos.Y() );
10598 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
10599 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
10601 pos = surface->Value( uv );
10604 // create or update the node
10607 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
10608 if ( !eos._sWOL.IsNull() )
10611 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
10613 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
10617 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
10622 if ( !eos._sWOL.IsNull() )
10624 // make average pos from new and current parameters
10627 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
10628 if ( useExistingPos )
10629 u = helper.GetNodeU( geomEdge, node );
10630 pos = curve->Value( u ).Transformed(loc);
10632 SMDS_EdgePositionPtr epos = node->GetPosition();
10633 epos->SetUParameter( u );
10637 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
10638 if ( useExistingPos )
10639 uv = helper.GetNodeUV( geomFace, node );
10640 pos = surface->Value( uv );
10642 SMDS_FacePositionPtr fpos = node->GetPosition();
10643 fpos->SetUParameter( uv.X() );
10644 fpos->SetVParameter( uv.Y() );
10647 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
10649 } // loop on edge._nodes
10651 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
10654 edge._pos.back().SetCoord( u, 0,0);
10656 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
10658 if ( edgeOnSameNode )
10659 edgeOnSameNode->_pos.back() = edge._pos.back();
10662 } // loop on eos._edges to create nodes
10665 if ( !getMeshDS()->IsEmbeddedMode() )
10666 // Log node movement
10667 for ( size_t i = 0; i < eos._edges.size(); ++i )
10669 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
10670 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
10677 helper.SetElementsOnShape(true);
10679 vector< vector<const SMDS_MeshNode*>* > nnVec;
10680 set< vector<const SMDS_MeshNode*>* > nnSet;
10681 set< int > degenEdgeInd;
10682 vector<const SMDS_MeshElement*> degenVols;
10684 TopExp_Explorer exp( data._solid, TopAbs_FACE );
10685 for ( ; exp.More(); exp.Next() )
10687 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
10688 if ( data._ignoreFaceIds.count( faceID ))
10690 _EdgesOnShape* eos = data.GetShapeEdges( faceID );
10691 SMDS_MeshGroup* group = StdMeshers_ViscousLayers::CreateGroup( eos->_hyp.GetGroupName(),
10694 std::vector< const SMDS_MeshElement* > vols;
10695 const bool isReversedFace = data._reversedFaceIds.count( faceID );
10696 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
10697 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
10698 while ( fIt->more() )
10700 const SMDS_MeshElement* face = fIt->next();
10701 const int nbNodes = face->NbCornerNodes();
10702 nnVec.resize( nbNodes );
10704 degenEdgeInd.clear();
10705 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
10706 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
10707 for ( int iN = 0; iN < nbNodes; ++iN )
10709 const SMDS_MeshNode* n = nIt->next();
10710 _LayerEdge* edge = data._n2eMap[ n ];
10711 const int i = isReversedFace ? nbNodes-1-iN : iN;
10712 nnVec[ i ] = & edge->_nodes;
10713 maxZ = std::max( maxZ, nnVec[ i ]->size() );
10714 minZ = std::min( minZ, nnVec[ i ]->size() );
10716 if ( helper.HasDegeneratedEdges() )
10717 nnSet.insert( nnVec[ i ]);
10722 if ( 0 < nnSet.size() && nnSet.size() < 3 )
10726 const SMDS_MeshElement* vol;
10733 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10735 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
10736 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
10737 vols.push_back( vol );
10740 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10742 for ( int iN = 0; iN < nbNodes; ++iN )
10743 if ( nnVec[ iN ]->size() < iZ+1 )
10744 degenEdgeInd.insert( iN );
10746 if ( degenEdgeInd.size() == 1 ) // PYRAM
10748 int i2 = *degenEdgeInd.begin();
10749 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
10750 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
10751 vol = helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
10752 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
10753 vols.push_back( vol );
10757 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
10758 vol = helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
10759 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
10760 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
10761 (*nnVec[ i3 ])[ iZ ]);
10762 vols.push_back( vol );
10770 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10772 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
10773 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
10774 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
10775 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
10776 vols.push_back( vol );
10779 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10781 for ( int iN = 0; iN < nbNodes; ++iN )
10782 if ( nnVec[ iN ]->size() < iZ+1 )
10783 degenEdgeInd.insert( iN );
10785 switch ( degenEdgeInd.size() )
10789 int i2 = *degenEdgeInd.begin();
10790 int i3 = *degenEdgeInd.rbegin();
10791 bool ok = ( i3 - i2 == 1 );
10792 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
10793 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
10794 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
10796 vol = helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
10797 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
10798 vols.push_back( vol );
10800 degenVols.push_back( vol );
10804 default: // degen HEX
10806 vol = helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
10807 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
10808 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
10809 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
10810 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
10811 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
10812 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
10813 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
10814 vols.push_back( vol );
10815 degenVols.push_back( vol );
10822 return error("Not supported type of element", data._index);
10824 } // switch ( nbNodes )
10827 for ( size_t i = 0; i < vols.size(); ++i )
10828 group->Add( vols[ i ]);
10830 } // while ( fIt->more() )
10833 if ( !degenVols.empty() )
10835 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
10836 if ( !err || err->IsOK() )
10838 SMESH_BadInputElements* badElems =
10839 new SMESH_BadInputElements( getMeshDS(), COMPERR_WARNING, "Bad quality volumes created" );
10840 badElems->myBadElements.insert( badElems->myBadElements.end(),
10841 degenVols.begin(),degenVols.end() );
10842 err.reset( badElems );
10849 namespace VISCOUS_3D
10852 //--------------------------------------------------------------------------------
10854 * \brief Pair of periodic FACEs
10856 struct PeriodicFaces
10858 typedef StdMeshers_ProjectionUtils::TrsfFinder3D Trsf;
10860 ShrinkFace* _shriFace[2];
10861 TNodeNodeMap _nnMap;
10864 PeriodicFaces( ShrinkFace* sf1, ShrinkFace* sf2 ): _shriFace{ sf1, sf2 } {}
10865 bool IncludeShrunk( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces ) const;
10866 bool MoveNodes( const TopoDS_Face& tgtFace );
10867 void Clear() { _nnMap.clear(); }
10868 bool IsEmpty() const { return _nnMap.empty(); }
10871 //--------------------------------------------------------------------------------
10873 * \brief Shrink FACE data used to find periodic FACEs
10877 // ................................................................................
10878 struct BndPart //!< part of FACE boundary, either shrink or no-shrink
10880 bool _isShrink, _isReverse;
10883 std::vector< SMESH_NodeXYZ > _nodes;
10884 TopAbs_ShapeEnum _vertSWOLType[2]; // shrink part includes VERTEXes
10885 AverageHyp* _vertHyp[2];
10886 double _edgeWOLLen[2]; // length of wol EDGE
10887 double _tol; // to compare _edgeWOLLen's
10890 _isShrink(0), _isReverse(0), _nbSegments(0), _hyp(0),
10891 _vertSWOLType{ TopAbs_WIRE, TopAbs_WIRE }, _vertHyp{ 0, 0 }, _edgeWOLLen{ 0., 0.}
10894 bool IsEqualLengthEWOL( const BndPart& other ) const
10896 return ( std::abs( _edgeWOLLen[0] - other._edgeWOLLen[0] ) < _tol &&
10897 std::abs( _edgeWOLLen[1] - other._edgeWOLLen[1] ) < _tol );
10900 bool operator==( const BndPart& other ) const
10902 return ( _isShrink == other._isShrink &&
10903 _nbSegments == other._nbSegments &&
10904 _nodes.size() == other._nodes.size() &&
10905 vertSWOLType1() == other.vertSWOLType1() &&
10906 vertSWOLType2() == other.vertSWOLType2() &&
10908 ( *_hyp == *other._hyp &&
10909 vertHyp1() == other.vertHyp1() &&
10910 vertHyp2() == other.vertHyp2() &&
10911 IsEqualLengthEWOL( other )))
10914 bool CanAppend( const BndPart& other )
10916 return ( _isShrink == other._isShrink &&
10918 ( *_hyp == *other._hyp &&
10919 *_hyp == vertHyp2() &&
10920 vertHyp2() == other.vertHyp1() ))
10923 void Append( const BndPart& other )
10925 _nbSegments += other._nbSegments;
10926 bool hasCommonNode = ( _nodes.back()->GetID() == other._nodes.front()->GetID() );
10927 _nodes.insert( _nodes.end(), other._nodes.begin() + hasCommonNode, other._nodes.end() );
10928 _vertSWOLType[1] = other._vertSWOLType[1];
10930 _vertHyp[1] = other._vertHyp[1];
10931 _edgeWOLLen[1] = other._edgeWOLLen[1];
10934 const SMDS_MeshNode* Node(size_t i) const
10936 return _nodes[ _isReverse ? ( _nodes.size() - 1 - i ) : i ]._node;
10938 void Reverse() { _isReverse = !_isReverse; }
10939 const TopAbs_ShapeEnum& vertSWOLType1() const { return _vertSWOLType[ _isReverse ]; }
10940 const TopAbs_ShapeEnum& vertSWOLType2() const { return _vertSWOLType[ !_isReverse ]; }
10941 const AverageHyp& vertHyp1() const { return *(_vertHyp[ _isReverse ]); }
10942 const AverageHyp& vertHyp2() const { return *(_vertHyp[ !_isReverse ]); }
10944 // ................................................................................
10946 SMESH_subMesh* _subMesh;
10947 _SolidData* _data1;
10948 _SolidData* _data2;
10950 std::list< BndPart > _boundary;
10951 int _boundarySize, _nbBoundaryParts;
10953 void Init( SMESH_subMesh* sm, _SolidData* sd1, _SolidData* sd2 )
10955 _subMesh = sm; _data1 = sd1; _data2 = sd2;
10957 bool IsSame( const TopoDS_Face& face ) const
10959 return _subMesh->GetSubShape().IsSame( face );
10961 bool IsShrunk( const TopTools_MapOfShape& shrunkFaces ) const
10963 return shrunkFaces.Contains( _subMesh->GetSubShape() );
10966 //================================================================================
10968 * Check if meshes on two FACEs are equal
10970 bool IsPeriodic( ShrinkFace& other, PeriodicFaces& periodic )
10972 if ( !IsSameNbElements( other ))
10975 this->SetBoundary();
10976 other.SetBoundary();
10977 if ( this->_boundarySize != other._boundarySize ||
10978 this->_nbBoundaryParts != other._nbBoundaryParts )
10981 for ( int isReverse = 0; isReverse < 2; ++isReverse )
10984 Reverse( _boundary );
10986 // check boundaries
10987 bool equalBoundary = false;
10988 for ( int iP = 0; iP < _nbBoundaryParts && !equalBoundary; ++iP )
10990 if ( ! ( equalBoundary = ( this->_boundary == other._boundary )))
10991 // set first part at end
10992 _boundary.splice( _boundary.end(), _boundary, _boundary.begin() );
10994 if ( !equalBoundary )
10997 // check connectivity
10998 std::set<const SMDS_MeshElement*> elemsThis, elemsOther;
10999 this->GetElements( elemsThis );
11000 other.GetElements( elemsOther );
11001 SMESH_MeshEditor::Sew_Error err =
11002 SMESH_MeshEditor::FindMatchingNodes( elemsThis, elemsOther,
11003 this->_boundary.front().Node(0),
11004 other._boundary.front().Node(0),
11005 this->_boundary.front().Node(1),
11006 other._boundary.front().Node(1),
11008 if ( err != SMESH_MeshEditor::SEW_OK )
11011 // check node positions
11012 std::vector< gp_XYZ > srcPnts, tgtPnts;
11013 this->GetBoundaryPoints( srcPnts );
11014 other.GetBoundaryPoints( tgtPnts );
11015 if ( !periodic._trsf.Solve( srcPnts, tgtPnts )) {
11018 double tol = std::numeric_limits<double>::max(); // tolerance by segment size
11019 for ( size_t i = 1; i < srcPnts.size(); ++i ) {
11020 tol = Min( tol, ( srcPnts[i-1] - srcPnts[i] ).SquareModulus() );
11022 tol = 0.01 * Sqrt( tol );
11023 for ( BndPart& boundary : _boundary ) { // tolerance by VL thickness
11024 if ( boundary._isShrink )
11025 tol = Min( tol, boundary._hyp->Get1stLayerThickness() / 50. );
11027 bool nodeCoincide = true;
11028 TNodeNodeMap::iterator n2n = periodic._nnMap.begin();
11029 for ( ; n2n != periodic._nnMap.end() && nodeCoincide; ++n2n )
11031 SMESH_NodeXYZ nSrc = n2n->first;
11032 SMESH_NodeXYZ nTgt = n2n->second;
11033 gp_XYZ pTgt = periodic._trsf.Transform( nSrc );
11034 nodeCoincide = (( pTgt - nTgt ).SquareModulus() < tol * tol );
11036 if ( nodeCoincide )
11042 bool IsSameNbElements( ShrinkFace& other ) // check number of mesh faces
11044 SMESHDS_SubMesh* sm1 = this->_subMesh->GetSubMeshDS();
11045 SMESHDS_SubMesh* sm2 = other._subMesh->GetSubMeshDS();
11046 return ( sm1->NbElements() == sm2->NbElements() &&
11047 sm1->NbNodes() == sm2->NbNodes() );
11050 void Reverse( std::list< BndPart >& boundary )
11052 boundary.reverse();
11053 for ( std::list< BndPart >::iterator part = boundary.begin(); part != boundary.end(); ++part )
11059 if ( !_boundary.empty() )
11062 TopoDS_Face F = TopoDS::Face( _subMesh->GetSubShape() );
11063 if ( F.Orientation() >= TopAbs_INTERNAL ) F.Orientation( TopAbs_FORWARD );
11064 std::list< TopoDS_Edge > edges;
11065 std::list< int > nbEdgesInWire;
11066 /*int nbWires =*/ SMESH_Block::GetOrderedEdges (F, edges, nbEdgesInWire);
11068 // std::list< TopoDS_Edge >::iterator edgesEnd = edges.end();
11069 // if ( nbWires > 1 ) {
11070 // edgesEnd = edges.begin();
11071 // std::advance( edgesEnd, nbEdgesInWire.front() );
11073 StdMeshers_FaceSide fSide( F, edges, _subMesh->GetFather(),
11074 /*fwd=*/true, /*skipMedium=*/true );
11075 _boundarySize = fSide.NbSegments();
11077 //TopoDS_Vertex vv[2];
11078 //std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
11079 for ( int iE = 0; iE < nbEdgesInWire.front(); ++iE )
11083 std::vector<const SMDS_MeshNode*> nodes = fSide.GetOrderedNodes( iE );
11084 bndPart._nodes.assign( nodes.begin(), nodes.end() );
11085 bndPart._nbSegments = bndPart._nodes.size() - 1;
11087 _EdgesOnShape* eos = _data1->GetShapeEdges( fSide.EdgeID( iE ));
11089 bndPart._isShrink = ( eos->SWOLType() == TopAbs_FACE );
11090 if ( bndPart._isShrink )
11091 if (( _data1->_noShrinkShapes.count( eos->_shapeID )) ||
11092 ( _data2 && _data2->_noShrinkShapes.count( eos->_shapeID )))
11093 bndPart._isShrink = false;
11095 if ( bndPart._isShrink )
11097 bndPart._hyp = & eos->_hyp;
11098 _EdgesOnShape* eov[2] = { _data1->GetShapeEdges( fSide.FirstVertex( iE )),
11099 _data1->GetShapeEdges( fSide.LastVertex ( iE )) };
11100 for ( int iV = 0; iV < 2; ++iV )
11102 bndPart._vertHyp [iV] = & eov[iV]->_hyp;
11103 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11104 if ( _data1->_noShrinkShapes.count( eov[iV]->_shapeID ))
11105 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11106 if ( _data2 && bndPart._vertSWOLType[iV] != TopAbs_SHAPE )
11108 eov[iV] = _data2->GetShapeEdges( iV ? fSide.LastVertex(iE) : fSide.FirstVertex(iE ));
11109 if ( _data2->_noShrinkShapes.count( eov[iV]->_shapeID ))
11110 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11111 else if ( eov[iV]->SWOLType() > bndPart._vertSWOLType[iV] )
11112 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11115 bndPart._edgeWOLLen[0] = fSide.EdgeLength( iE - 1 );
11116 bndPart._edgeWOLLen[1] = fSide.EdgeLength( iE + 1 );
11118 bndPart._tol = std::numeric_limits<double>::max(); // tolerance by segment size
11119 for ( size_t i = 1; i < bndPart._nodes.size(); ++i )
11120 bndPart._tol = Min( bndPart._tol,
11121 ( bndPart._nodes[i-1] - bndPart._nodes[i] ).SquareModulus() );
11124 if ( _boundary.empty() || ! _boundary.back().CanAppend( bndPart ))
11125 _boundary.push_back( bndPart );
11127 _boundary.back().Append( bndPart );
11130 _nbBoundaryParts = _boundary.size();
11131 if ( _nbBoundaryParts > 1 && _boundary.front()._isShrink == _boundary.back()._isShrink )
11133 _boundary.back().Append( _boundary.front() );
11134 _boundary.pop_front();
11135 --_nbBoundaryParts;
11139 void GetElements( std::set<const SMDS_MeshElement*>& theElems)
11141 if ( SMESHDS_SubMesh* sm = _subMesh->GetSubMeshDS() )
11142 for ( SMDS_ElemIteratorPtr fIt = sm->GetElements(); fIt->more(); )
11143 theElems.insert( theElems.end(), fIt->next() );
11148 void GetBoundaryPoints( std::vector< gp_XYZ >& points )
11150 points.reserve( _boundarySize );
11151 size_t nb = _boundary.rbegin()->_nodes.size();
11152 smIdType lastID = _boundary.rbegin()->Node( nb - 1 )->GetID();
11153 std::list< BndPart >::const_iterator part = _boundary.begin();
11154 for ( ; part != _boundary.end(); ++part )
11156 size_t nb = part->_nodes.size();
11158 size_t iR = nb - 1;
11159 size_t* i = part->_isReverse ? &iR : &iF;
11160 if ( part->_nodes[ *i ]->GetID() == lastID )
11162 for ( ; iF < nb; ++iF, --iR )
11163 points.push_back( part->_nodes[ *i ]);
11165 lastID = part->_nodes[ *i ]->GetID();
11168 }; // struct ShrinkFace
11170 //--------------------------------------------------------------------------------
11172 * \brief Periodic FACEs
11176 std::vector< ShrinkFace > _shrinkFaces;
11177 std::vector< PeriodicFaces > _periodicFaces;
11179 PeriodicFaces* GetPeriodic( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces )
11181 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11182 if ( _periodicFaces[ i ].IncludeShrunk( face, shrunkFaces ))
11183 return & _periodicFaces[ i ];
11186 void ClearPeriodic( const TopoDS_Face& face )
11188 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11189 if ( _periodicFaces[ i ]._shriFace[0]->IsSame( face ) ||
11190 _periodicFaces[ i ]._shriFace[1]->IsSame( face ))
11191 _periodicFaces[ i ].Clear();
11195 //================================================================================
11197 * Check if a pair includes the given FACE and the other FACE is already shrunk
11199 bool PeriodicFaces::IncludeShrunk( const TopoDS_Face& face,
11200 const TopTools_MapOfShape& shrunkFaces ) const
11202 if ( IsEmpty() ) return false;
11203 return (( _shriFace[0]->IsSame( face ) && _shriFace[1]->IsShrunk( shrunkFaces )) ||
11204 ( _shriFace[1]->IsSame( face ) && _shriFace[0]->IsShrunk( shrunkFaces )));
11207 //================================================================================
11209 * Make equal meshes on periodic faces by moving corresponding nodes
11211 bool PeriodicFaces::MoveNodes( const TopoDS_Face& tgtFace )
11213 int iTgt = _shriFace[1]->IsSame( tgtFace );
11214 int iSrc = 1 - iTgt;
11216 _SolidData* dataSrc = _shriFace[iSrc]->_data1;
11217 _SolidData* dataTgt = _shriFace[iTgt]->_data1;
11219 Trsf * trsf = & _trsf, trsfInverse;
11222 trsfInverse = _trsf;
11223 if ( !trsfInverse.Invert())
11225 trsf = &trsfInverse;
11227 SMESHDS_Mesh* meshDS = dataSrc->GetHelper().GetMeshDS();
11229 dumpFunction(SMESH_Comment("periodicMoveNodes_F")
11230 << _shriFace[iSrc]->_subMesh->GetId() << "_F"
11231 << _shriFace[iTgt]->_subMesh->GetId() );
11232 TNode2Edge::iterator n2e;
11233 TNodeNodeMap::iterator n2n = _nnMap.begin();
11234 for ( ; n2n != _nnMap.end(); ++n2n )
11236 const SMDS_MeshNode* const* nn = & n2n->first;
11237 const SMDS_MeshNode* nSrc = nn[ iSrc ];
11238 const SMDS_MeshNode* nTgt = nn[ iTgt ];
11240 if (( nSrc->GetPosition()->GetDim() == 2 ) ||
11241 (( n2e = dataSrc->_n2eMap.find( nSrc )) == dataSrc->_n2eMap.end() ))
11243 SMESH_NodeXYZ pSrc = nSrc;
11244 gp_XYZ pTgt = trsf->Transform( pSrc );
11245 meshDS->MoveNode( nTgt, pTgt.X(), pTgt.Y(), pTgt.Z() );
11249 _LayerEdge* leSrc = n2e->second;
11250 n2e = dataTgt->_n2eMap.find( nTgt );
11251 if ( n2e == dataTgt->_n2eMap.end() )
11253 _LayerEdge* leTgt = n2e->second;
11254 if ( leSrc->_nodes.size() != leTgt->_nodes.size() )
11256 for ( size_t iN = 1; iN < leSrc->_nodes.size(); ++iN )
11258 SMESH_NodeXYZ pSrc = leSrc->_nodes[ iN ];
11259 gp_XYZ pTgt = trsf->Transform( pSrc );
11260 meshDS->MoveNode( leTgt->_nodes[ iN ], pTgt.X(), pTgt.Y(), pTgt.Z() );
11262 dumpMove( leTgt->_nodes[ iN ]);
11266 bool done = ( n2n == _nnMap.end() );
11267 debugMsg( "PeriodicFaces::MoveNodes "
11268 << _shriFace[iSrc]->_subMesh->GetId() << " -> "
11269 << _shriFace[iTgt]->_subMesh->GetId() << " -- "
11270 << ( done ? "DONE" : "FAIL"));
11275 } // namespace VISCOUS_3D; Periodicity part
11278 //================================================================================
11280 * \brief Find FACEs to shrink, that are equally meshed before shrink (i.e. periodic)
11281 * and should remain equal after shrink
11283 //================================================================================
11285 void _ViscousBuilder::findPeriodicFaces()
11287 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11288 // _LayerEdge's inflated along FACE or EDGE)
11289 std::map< TGeomID, std::list< _SolidData* > > id2sdMap;
11290 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11292 _SolidData& data = _sdVec[i];
11293 std::map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11294 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11295 if ( s2s->second.ShapeType() == TopAbs_FACE )
11296 id2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11299 _periodicity.reset( new Periodicity );
11300 _periodicity->_shrinkFaces.resize( id2sdMap.size() );
11302 std::map< TGeomID, std::list< _SolidData* > >::iterator id2sdIt = id2sdMap.begin();
11303 for ( size_t i = 0; i < id2sdMap.size(); ++i, ++id2sdIt )
11305 _SolidData* sd1 = id2sdIt->second.front();
11306 _SolidData* sd2 = id2sdIt->second.back();
11307 _periodicity->_shrinkFaces[ i ].Init( _mesh->GetSubMeshContaining( id2sdIt->first ), sd1, sd2 );
11310 for ( size_t i1 = 0; i1 < _periodicity->_shrinkFaces.size(); ++i1 )
11311 for ( size_t i2 = i1 + 1; i2 < _periodicity->_shrinkFaces.size(); ++i2 )
11313 PeriodicFaces pf( & _periodicity->_shrinkFaces[ i1 ],
11314 & _periodicity->_shrinkFaces[ i2 ]);
11315 if ( pf._shriFace[0]->IsPeriodic( *pf._shriFace[1], pf ))
11317 _periodicity->_periodicFaces.push_back( pf );
11323 //================================================================================
11325 * \brief Shrink 2D mesh on faces to let space for inflated layers
11327 //================================================================================
11329 bool _ViscousBuilder::shrink(_SolidData& theData)
11331 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11332 // _LayerEdge's inflated along FACE or EDGE)
11333 map< TGeomID, list< _SolidData* > > f2sdMap;
11334 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11336 _SolidData& data = _sdVec[i];
11337 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11338 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11339 if ( s2s->second.ShapeType() == TopAbs_FACE && !_shrunkFaces.Contains( s2s->second ))
11341 f2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11343 // Put mesh faces on the shrunk FACE to the proxy sub-mesh to avoid
11344 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
11345 // by StdMeshers_QuadToTriaAdaptor
11346 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
11348 SMESH_ProxyMesh::SubMesh* proxySub =
11349 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
11350 if ( proxySub->NbElements() == 0 )
11352 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11353 while ( fIt->more() )
11355 const SMDS_MeshElement* f = fIt->next();
11356 // as a result 3D algo will use elements from proxySub and not from smDS
11357 proxySub->AddElement( f );
11358 f->setIsMarked( true );
11360 // Mark nodes on the FACE to discriminate them from nodes
11361 // added by addBoundaryElements(); marked nodes are to be smoothed while shrink()
11362 for ( int iN = 0, nbN = f->NbNodes(); iN < nbN; ++iN )
11364 const SMDS_MeshNode* n = f->GetNode( iN );
11365 if ( n->GetPosition()->GetDim() == 2 )
11366 n->setIsMarked( true );
11374 SMESH_MesherHelper helper( *_mesh );
11375 helper.ToFixNodeParameters( true );
11378 map< TGeomID, _Shrinker1D > e2shrMap;
11379 vector< _EdgesOnShape* > subEOS;
11380 vector< _LayerEdge* > lEdges;
11382 // loop on FACEs to shrink mesh on
11383 map< TGeomID, list< _SolidData* > >::iterator f2sd = f2sdMap.begin();
11384 for ( ; f2sd != f2sdMap.end(); ++f2sd )
11386 list< _SolidData* > & dataList = f2sd->second;
11387 if ( dataList.front()->_n2eMap.empty() ||
11388 dataList.back() ->_n2eMap.empty() )
11389 continue; // not yet computed
11390 if ( dataList.front() != &theData &&
11391 dataList.back() != &theData )
11394 _SolidData& data = *dataList.front();
11395 _SolidData* data2 = dataList.size() > 1 ? dataList.back() : 0;
11396 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
11397 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
11398 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
11400 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
11402 _shrunkFaces.Add( F );
11403 helper.SetSubShape( F );
11405 // ==============================
11406 // Use periodicity to move nodes
11407 // ==============================
11409 PeriodicFaces* periodic = _periodicity->GetPeriodic( F, _shrunkFaces );
11410 bool movedByPeriod = ( periodic && periodic->MoveNodes( F ));
11412 // ===========================
11413 // Prepare data for shrinking
11414 // ===========================
11416 // Collect nodes to smooth (they are marked at the beginning of this method)
11417 vector < const SMDS_MeshNode* > smoothNodes;
11419 if ( !movedByPeriod )
11421 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
11422 while ( nIt->more() )
11424 const SMDS_MeshNode* n = nIt->next();
11425 if ( n->isMarked() )
11426 smoothNodes.push_back( n );
11429 // Find out face orientation
11430 double refSign = 1;
11431 const set<TGeomID> ignoreShapes;
11433 if ( !smoothNodes.empty() )
11435 vector<_Simplex> simplices;
11436 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
11437 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of simplex nodes
11438 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
11439 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
11440 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper, refSign ))
11444 // Find _LayerEdge's inflated along F
11448 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
11449 /*complexFirst=*/true); //!!!
11450 while ( subIt->more() )
11452 const TGeomID subID = subIt->next()->GetId();
11453 if ( data._noShrinkShapes.count( subID ))
11455 _EdgesOnShape* eos = data.GetShapeEdges( subID );
11456 if ( !eos || eos->_sWOL.IsNull() )
11457 if ( data2 ) // check in adjacent SOLID
11459 eos = data2->GetShapeEdges( subID );
11460 if ( !eos || eos->_sWOL.IsNull() )
11463 subEOS.push_back( eos );
11465 if ( !movedByPeriod )
11466 for ( size_t i = 0; i < eos->_edges.size(); ++i )
11468 lEdges.push_back( eos->_edges[ i ] );
11469 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
11474 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
11475 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11476 while ( fIt->more() )
11477 if ( const SMDS_MeshElement* f = fIt->next() )
11478 dumpChangeNodes( f );
11481 // Replace source nodes by target nodes in mesh faces to shrink
11482 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
11483 const SMDS_MeshNode* nodes[20];
11484 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11486 _EdgesOnShape& eos = * subEOS[ iS ];
11487 for ( size_t i = 0; i < eos._edges.size(); ++i )
11489 _LayerEdge& edge = *eos._edges[i];
11490 const SMDS_MeshNode* srcNode = edge._nodes[0];
11491 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11492 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
11493 while ( fIt->more() )
11495 const SMDS_MeshElement* f = fIt->next();
11496 if ( !smDS->Contains( f ) || !f->isMarked() )
11498 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
11499 for ( int iN = 0; nIt->more(); ++iN )
11501 const SMDS_MeshNode* n = nIt->next();
11502 nodes[iN] = ( n == srcNode ? tgtNode : n );
11504 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
11505 dumpChangeNodes( f );
11511 // find out if a FACE is concave
11512 const bool isConcaveFace = isConcave( F, helper );
11514 // Create _SmoothNode's on face F
11515 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
11517 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
11518 const bool sortSimplices = isConcaveFace;
11519 for ( size_t i = 0; i < smoothNodes.size(); ++i )
11521 const SMDS_MeshNode* n = smoothNodes[i];
11522 nodesToSmooth[ i ]._node = n;
11523 // src nodes must be already replaced by tgt nodes to have tgt nodes in _simplices
11524 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
11525 // fix up incorrect uv of nodes on the FACE
11526 helper.GetNodeUV( F, n, 0, &isOkUV);
11531 //if ( nodesToSmooth.empty() ) continue;
11533 // Find EDGE's to shrink and set simpices to LayerEdge's
11534 set< _Shrinker1D* > eShri1D;
11536 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11538 _EdgesOnShape& eos = * subEOS[ iS ];
11539 if ( eos.SWOLType() == TopAbs_EDGE )
11541 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
11542 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
11543 if ( !movedByPeriod )
11545 _Shrinker1D& shrinker = e2shrMap[ edgeSM->GetId() ];
11546 eShri1D.insert( & shrinker );
11547 shrinker.AddEdge( eos._edges[0], eos, helper );
11548 // restore params of nodes on EDGE if the EDGE has been already
11549 // shrunk while shrinking other FACE
11550 shrinker.RestoreParams();
11553 for ( size_t i = 0; i < eos._edges.size(); ++i )
11555 _LayerEdge& edge = * eos._edges[i];
11556 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
11558 // additionally mark tgt node; only marked nodes will be used in SetNewLength2d()
11559 // not-marked nodes are those added by refine()
11560 edge._nodes.back()->setIsMarked( true );
11565 bool toFixTria = false; // to improve quality of trias by diagonal swap
11566 if ( isConcaveFace && !movedByPeriod )
11568 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
11569 if ( hasTria != hasQuad ) {
11570 toFixTria = hasTria;
11573 set<int> nbNodesSet;
11574 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11575 while ( fIt->more() && nbNodesSet.size() < 2 )
11576 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
11577 toFixTria = ( *nbNodesSet.begin() == 3 );
11581 // ==================
11582 // Perform shrinking
11583 // ==================
11585 bool shrunk = !movedByPeriod;
11586 int nbBad, shriStep=0, smooStep=0;
11587 _SmoothNode::SmoothType smoothType
11588 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
11589 SMESH_Comment errMsg;
11593 // Move boundary nodes (actually just set new UV)
11594 // -----------------------------------------------
11595 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
11597 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11599 _EdgesOnShape& eos = * subEOS[ iS ];
11600 for ( size_t i = 0; i < eos._edges.size(); ++i )
11602 shrunk |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
11607 // Move nodes on EDGE's
11608 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
11609 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
11610 for ( ; shr != eShri1D.end(); ++shr )
11611 (*shr)->Compute( /*set3D=*/false, helper );
11614 // -----------------
11615 int nbNoImpSteps = 0;
11618 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
11620 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11622 int oldBadNb = nbBad;
11625 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
11626 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
11627 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11629 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
11630 smooTy, /*set3D=*/isConcaveFace);
11632 if ( nbBad < oldBadNb )
11642 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
11643 if ( shriStep > 200 )
11644 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
11645 if ( !errMsg.empty() )
11648 // Fix narrow triangles by swapping diagonals
11649 // ---------------------------------------
11652 set<const SMDS_MeshNode*> usedNodes;
11653 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
11655 // update working data
11656 set<const SMDS_MeshNode*>::iterator n;
11657 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
11659 n = usedNodes.find( nodesToSmooth[ i ]._node );
11660 if ( n != usedNodes.end())
11662 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
11663 nodesToSmooth[ i ]._simplices,
11664 ignoreShapes, NULL,
11665 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
11666 usedNodes.erase( n );
11669 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
11671 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
11672 if ( n != usedNodes.end())
11674 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
11675 lEdges[i]->_simplices,
11677 usedNodes.erase( n );
11681 // TODO: check effect of this additional smooth
11682 // additional laplacian smooth to increase allowed shrink step
11683 // for ( int st = 1; st; --st )
11685 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11686 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11688 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11689 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
11693 } // while ( shrunk )
11695 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
11697 debugMsg( "Re-compute FACE " << f2sd->first << " because " << errMsg );
11700 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
11702 vector< const SMDS_MeshElement* > facesToRm;
11705 facesToRm.reserve( psm->NbElements() );
11706 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
11707 facesToRm.push_back( ite->next() );
11709 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11710 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11713 for ( size_t i = 0; i < facesToRm.size(); ++i )
11714 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
11718 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
11719 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
11720 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11721 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
11722 subEOS[iS]->_edges[i]->_nodes.end() );
11724 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
11725 while ( itn->more() ) {
11726 const SMDS_MeshNode* n = itn->next();
11727 if ( !nodesToKeep.count( n ))
11728 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
11731 _periodicity->ClearPeriodic( F );
11733 // restore position and UV of target nodes
11735 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11736 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11738 _LayerEdge* edge = subEOS[iS]->_edges[i];
11739 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
11740 if ( edge->_pos.empty() ||
11741 edge->Is( _LayerEdge::SHRUNK )) continue;
11742 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
11744 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11745 pos->SetUParameter( edge->_pos[0].X() );
11746 pos->SetVParameter( edge->_pos[0].Y() );
11747 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
11751 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11752 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
11753 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
11755 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11756 dumpMove( tgtNode );
11758 // shrink EDGE sub-meshes and set proxy sub-meshes
11759 UVPtStructVec uvPtVec;
11760 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
11761 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
11763 _Shrinker1D* shr = (*shrIt);
11764 shr->Compute( /*set3D=*/true, helper );
11766 // set proxy mesh of EDGEs w/o layers
11767 map< double, const SMDS_MeshNode* > nodes;
11768 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
11769 // remove refinement nodes
11770 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
11771 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
11772 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
11773 if ( u2n->second == sn0 || u2n->second == sn1 )
11775 while ( u2n->second != tn0 && u2n->second != tn1 )
11777 nodes.erase( nodes.begin(), u2n );
11779 u2n = --nodes.end();
11780 if ( u2n->second == sn0 || u2n->second == sn1 )
11782 while ( u2n->second != tn0 && u2n->second != tn1 )
11784 nodes.erase( ++u2n, nodes.end() );
11786 // set proxy sub-mesh
11787 uvPtVec.resize( nodes.size() );
11788 u2n = nodes.begin();
11789 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
11790 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
11792 uvPtVec[ i ].node = u2n->second;
11793 uvPtVec[ i ].param = u2n->first;
11794 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
11796 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
11797 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11800 // set proxy mesh of EDGEs with layers
11801 vector< _LayerEdge* > edges;
11802 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11804 _EdgesOnShape& eos = * subEOS[ iS ];
11805 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
11806 if ( eos.size() == 0 )
11809 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
11810 data.SortOnEdge( E, eos._edges );
11813 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
11814 if ( !eov->_edges.empty() )
11815 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
11817 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
11819 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
11820 if ( !eov->_edges.empty() )
11821 edges.push_back( eov->_edges[0] ); // on last VERTEX
11823 uvPtVec.resize( edges.size() );
11824 for ( size_t i = 0; i < edges.size(); ++i )
11826 uvPtVec[ i ].node = edges[i]->_nodes.back();
11827 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
11828 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
11830 if ( uvPtVec[ 0 ].node == uvPtVec.back().node && // closed
11831 helper.IsSeamShape( uvPtVec[ 0 ].node->GetShapeID() ))
11833 uvPtVec[ 0 ].SetUV( helper.GetNodeUV( F,
11834 edges[0]->_nodes.back(),
11835 edges[1]->_nodes.back() ));
11836 size_t i = edges.size() - 1;
11837 uvPtVec[ i ].SetUV( helper.GetNodeUV( F,
11838 edges[i ]->_nodes.back(),
11839 edges[i-1]->_nodes.back() ));
11841 // if ( edges.empty() )
11843 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
11844 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
11845 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11847 // temporary clear the FACE sub-mesh from faces made by refine()
11848 vector< const SMDS_MeshElement* > elems;
11849 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
11850 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11851 elems.push_back( ite->next() );
11852 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
11853 elems.push_back( ite->next() );
11856 // compute the mesh on the FACE
11857 TopTools_IndexedMapOfShape allowed(1);
11858 allowed.Add( sm->GetSubShape() );
11859 sm->SetAllowedSubShapes( &allowed );
11860 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
11861 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
11862 sm->SetAllowedSubShapes( nullptr );
11864 // re-fill proxy sub-meshes of the FACE
11865 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11866 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11867 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11868 psm->AddElement( ite->next() );
11871 for ( size_t i = 0; i < elems.size(); ++i )
11872 smDS->AddElement( elems[i] );
11874 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
11875 return error( errMsg );
11877 } // end of re-meshing in case of failed smoothing
11878 else if ( !movedByPeriod )
11880 // No wrongly shaped faces remain; final smooth. Set node XYZ.
11881 bool isStructuredFixed = false;
11882 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
11883 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
11884 if ( !isStructuredFixed )
11886 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
11887 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
11889 for ( int st = 3; st; --st )
11892 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
11893 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
11894 case 3: smoothType = _SmoothNode::ANGULAR; break;
11896 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11897 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11899 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11900 smoothType,/*set3D=*/st==1 );
11905 if ( !getMeshDS()->IsEmbeddedMode() )
11906 // Log node movement
11907 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11909 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
11910 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
11914 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
11915 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
11917 VISCOUS_3D::ToClearSubWithMain( sm, data2->_solid );
11919 } // loop on FACES to shrink mesh on
11922 // Replace source nodes by target nodes in shrunk mesh edges
11924 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
11925 for ( ; e2shr != e2shrMap.end(); ++e2shr )
11926 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
11931 //================================================================================
11933 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
11935 //================================================================================
11937 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
11938 _EdgesOnShape& eos,
11939 SMESH_MesherHelper& helper,
11940 const SMESHDS_SubMesh* /*faceSubMesh*/)
11942 const SMDS_MeshNode* srcNode = edge._nodes[0];
11943 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11945 if ( eos.SWOLType() == TopAbs_FACE )
11947 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
11950 edge.Set( _LayerEdge::SHRUNK );
11951 return srcNode == tgtNode;
11953 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
11954 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
11955 gp_Vec2d uvDir( srcUV, tgtUV );
11956 double uvLen = uvDir.Magnitude();
11958 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
11961 //edge._pos.resize(1);
11962 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
11964 // set UV of source node to target node
11965 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11966 pos->SetUParameter( srcUV.X() );
11967 pos->SetVParameter( srcUV.Y() );
11969 else // _sWOL is TopAbs_EDGE
11971 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
11974 edge.Set( _LayerEdge::SHRUNK );
11975 return srcNode == tgtNode;
11977 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11978 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
11979 if ( !edgeSM || edgeSM->NbElements() == 0 )
11980 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11982 const SMDS_MeshNode* n2 = 0;
11983 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
11984 while ( eIt->more() && !n2 )
11986 const SMDS_MeshElement* e = eIt->next();
11987 if ( !edgeSM->Contains(e)) continue;
11988 n2 = e->GetNode( 0 );
11989 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
11992 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11994 if ( n2 == tgtNode || // for 3D_mesh_GHS3D_01/B1
11995 n2 == edge._nodes[1] ) // bos #20643
11997 // shrunk by other SOLID
11998 edge.Set( _LayerEdge::SHRUNK ); // ???
12002 double uSrc = helper.GetNodeU( E, srcNode, n2 );
12003 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
12004 double u2 = helper.GetNodeU( E, n2, srcNode );
12006 //edge._pos.clear();
12008 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
12010 // tgtNode is located so that it does not make faces with wrong orientation
12011 edge.Set( _LayerEdge::SHRUNK );
12014 //edge._pos.resize(1);
12015 edge._pos[0].SetCoord( U_TGT, uTgt );
12016 edge._pos[0].SetCoord( U_SRC, uSrc );
12017 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
12019 edge._simplices.resize( 1 );
12020 edge._simplices[0]._nPrev = n2;
12022 // set U of source node to the target node
12023 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
12024 pos->SetUParameter( uSrc );
12029 //================================================================================
12031 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
12033 //================================================================================
12035 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
12037 if ( edge._nodes.size() == 1 )
12042 const SMDS_MeshNode* srcNode = edge._nodes[0];
12043 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
12044 if ( S.IsNull() ) return;
12048 switch ( S.ShapeType() )
12053 TopLoc_Location loc;
12054 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
12055 if ( curve.IsNull() ) return;
12056 SMDS_EdgePositionPtr ePos = srcNode->GetPosition();
12057 p = curve->Value( ePos->GetUParameter() );
12060 case TopAbs_VERTEX:
12062 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
12067 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
12068 dumpMove( srcNode );
12072 //================================================================================
12074 * \brief Try to fix triangles with high aspect ratio by swapping diagonals
12076 //================================================================================
12078 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
12079 SMESH_MesherHelper& helper,
12082 set<const SMDS_MeshNode*> * involvedNodes)
12084 SMESH::Controls::AspectRatio qualifier;
12085 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
12086 const double maxAspectRatio = is2D ? 4. : 2;
12087 _NodeCoordHelper xyz( F, helper, is2D );
12089 // find bad triangles
12091 vector< const SMDS_MeshElement* > badTrias;
12092 vector< double > badAspects;
12093 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
12094 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12095 while ( fIt->more() )
12097 const SMDS_MeshElement * f = fIt->next();
12098 if ( f->NbCornerNodes() != 3 ) continue;
12099 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
12100 double aspect = qualifier.GetValue( points );
12101 if ( aspect > maxAspectRatio )
12103 badTrias.push_back( f );
12104 badAspects.push_back( aspect );
12109 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
12110 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12111 while ( fIt->more() )
12113 const SMDS_MeshElement * f = fIt->next();
12114 if ( f->NbCornerNodes() == 3 )
12115 dumpChangeNodes( f );
12119 if ( badTrias.empty() )
12122 // find couples of faces to swap diagonal
12124 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
12125 vector< T2Trias > triaCouples;
12127 TIDSortedElemSet involvedFaces, emptySet;
12128 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
12131 double aspRatio [3];
12134 if ( !involvedFaces.insert( badTrias[iTia] ).second )
12136 for ( int iP = 0; iP < 3; ++iP )
12137 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
12139 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
12140 int bestCouple = -1;
12141 for ( int iSide = 0; iSide < 3; ++iSide )
12143 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
12144 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
12145 trias [iSide].first = badTrias[iTia];
12146 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
12148 if (( ! trias[iSide].second ) ||
12149 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
12150 ( ! sm->Contains( trias[iSide].second )))
12153 // aspect ratio of an adjacent tria
12154 for ( int iP = 0; iP < 3; ++iP )
12155 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
12156 double aspectInit = qualifier.GetValue( points2 );
12158 // arrange nodes as after diag-swaping
12159 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
12160 i3 = helper.WrapIndex( i1-1, 3 );
12162 i3 = helper.WrapIndex( i1+1, 3 );
12164 points1( 1+ iSide ) = points2( 1+ i3 );
12165 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
12167 // aspect ratio after diag-swaping
12168 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
12169 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
12172 // prevent inversion of a triangle
12173 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
12174 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
12175 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
12178 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
12179 bestCouple = iSide;
12182 if ( bestCouple >= 0 )
12184 triaCouples.push_back( trias[bestCouple] );
12185 involvedFaces.insert ( trias[bestCouple].second );
12189 involvedFaces.erase( badTrias[iTia] );
12192 if ( triaCouples.empty() )
12197 SMESH_MeshEditor editor( helper.GetMesh() );
12198 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12199 for ( size_t i = 0; i < triaCouples.size(); ++i )
12201 dumpChangeNodes( triaCouples[i].first );
12202 dumpChangeNodes( triaCouples[i].second );
12203 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
12206 if ( involvedNodes )
12207 for ( size_t i = 0; i < triaCouples.size(); ++i )
12209 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
12210 triaCouples[i].first->end_nodes() );
12211 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
12212 triaCouples[i].second->end_nodes() );
12215 // just for debug dump resulting triangles
12216 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12217 for ( size_t i = 0; i < triaCouples.size(); ++i )
12219 dumpChangeNodes( triaCouples[i].first );
12220 dumpChangeNodes( triaCouples[i].second );
12224 //================================================================================
12226 * \brief Move target node to it's final position on the FACE during shrinking
12228 //================================================================================
12230 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
12231 const TopoDS_Face& F,
12232 _EdgesOnShape& eos,
12233 SMESH_MesherHelper& helper )
12236 return false; // already at the target position
12238 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
12240 if ( eos.SWOLType() == TopAbs_FACE )
12242 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
12243 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
12244 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
12245 const double uvLen = tgtUV.Distance( curUV );
12246 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
12248 // Select shrinking step such that not to make faces with wrong orientation.
12249 double stepSize = 1e100;
12250 for ( size_t i = 0; i < _simplices.size(); ++i )
12252 if ( !_simplices[i]._nPrev->isMarked() ||
12253 !_simplices[i]._nNext->isMarked() )
12254 continue; // simplex of quadrangle created by addBoundaryElements()
12256 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
12257 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev, tgtNode );
12258 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext, tgtNode );
12259 gp_XY dirN = uvN2 - uvN1;
12260 double det = uvDir.Crossed( dirN );
12261 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
12262 gp_XY dirN2Cur = curUV - uvN1;
12263 double step = dirN.Crossed( dirN2Cur ) / det;
12265 stepSize = Min( step, stepSize );
12268 if ( uvLen <= stepSize )
12274 else if ( stepSize > 0 )
12276 newUV = curUV + uvDir.XY() * stepSize * kSafe;
12282 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
12283 pos->SetUParameter( newUV.X() );
12284 pos->SetVParameter( newUV.Y() );
12287 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12288 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12289 dumpMove( tgtNode );
12291 if ( surface.IsNull() ) {}
12294 else // _sWOL is TopAbs_EDGE
12296 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
12297 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
12298 SMDS_EdgePositionPtr tgtPos = tgtNode->GetPosition();
12300 const double u2 = helper.GetNodeU( E, n2, tgtNode );
12301 const double uSrc = _pos[0].Coord( U_SRC );
12302 const double lenTgt = _pos[0].Coord( LEN_TGT );
12304 double newU = _pos[0].Coord( U_TGT );
12305 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
12307 Set( _LayerEdge::SHRUNK );
12312 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
12314 tgtPos->SetUParameter( newU );
12316 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
12317 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12318 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12319 dumpMove( tgtNode );
12326 //================================================================================
12328 * \brief Perform smooth on the FACE
12329 * \retval bool - true if the node has been moved
12331 //================================================================================
12333 bool _SmoothNode::Smooth(int& nbBad,
12334 Handle(Geom_Surface)& surface,
12335 SMESH_MesherHelper& helper,
12336 const double refSign,
12340 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
12342 // get uv of surrounding nodes
12343 vector<gp_XY> uv( _simplices.size() );
12344 for ( size_t i = 0; i < _simplices.size(); ++i )
12345 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
12347 // compute new UV for the node
12348 gp_XY newPos (0,0);
12349 if ( how == TFI && _simplices.size() == 4 )
12352 for ( size_t i = 0; i < _simplices.size(); ++i )
12353 if ( _simplices[i]._nOpp )
12354 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
12356 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
12358 newPos = helper.calcTFI ( 0.5, 0.5,
12359 corners[0], corners[1], corners[2], corners[3],
12360 uv[1], uv[2], uv[3], uv[0] );
12362 else if ( how == ANGULAR )
12364 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
12366 else if ( how == CENTROIDAL && _simplices.size() > 3 )
12368 // average centers of diagonals wieghted with their reciprocal lengths
12369 if ( _simplices.size() == 4 )
12371 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
12372 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
12373 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
12377 double sumWeight = 0;
12378 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
12379 for ( int i = 0; i < nb; ++i )
12382 int iTo = i + _simplices.size() - 1;
12383 for ( int j = iFrom; j < iTo; ++j )
12385 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
12386 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
12388 newPos += w * ( uv[i]+uv[i2] );
12391 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
12396 // Laplacian smooth
12397 for ( size_t i = 0; i < _simplices.size(); ++i )
12399 newPos /= _simplices.size();
12402 // count quality metrics (orientation) of triangles around the node
12403 int nbOkBefore = 0;
12404 gp_XY tgtUV = helper.GetNodeUV( face, _node );
12405 for ( size_t i = 0; i < _simplices.size(); ++i )
12406 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
12409 for ( size_t i = 0; i < _simplices.size(); ++i )
12410 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
12412 if ( nbOkAfter < nbOkBefore )
12414 nbBad += _simplices.size() - nbOkBefore;
12418 SMDS_FacePositionPtr pos = _node->GetPosition();
12419 pos->SetUParameter( newPos.X() );
12420 pos->SetVParameter( newPos.Y() );
12427 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
12428 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
12432 nbBad += _simplices.size() - nbOkAfter;
12433 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
12436 //================================================================================
12438 * \brief Computes new UV using angle based smoothing technique
12440 //================================================================================
12442 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
12443 const gp_XY& uvToFix,
12444 const double refSign)
12446 uv.push_back( uv.front() );
12448 vector< gp_XY > edgeDir ( uv.size() );
12449 vector< double > edgeSize( uv.size() );
12450 for ( size_t i = 1; i < edgeDir.size(); ++i )
12452 edgeDir [i-1] = uv[i] - uv[i-1];
12453 edgeSize[i-1] = edgeDir[i-1].Modulus();
12454 if ( edgeSize[i-1] < numeric_limits<double>::min() )
12455 edgeDir[i-1].SetX( 100 );
12457 edgeDir[i-1] /= edgeSize[i-1] * refSign;
12459 edgeDir.back() = edgeDir.front();
12460 edgeSize.back() = edgeSize.front();
12464 for ( size_t i = 1; i < edgeDir.size(); ++i )
12466 const int i1 = i-1;
12467 if ( edgeDir[i1].X() > 1. ) continue;
12468 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
12469 if ( i == edgeDir.size() ) break;
12471 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
12472 gp_XY norm2( -edgeDir[i ].Y(), edgeDir[i ].X() );
12473 gp_XY bisec = norm1 + norm2;
12474 double bisecSize = bisec.Modulus();
12475 if ( bisecSize < numeric_limits<double>::min() )
12477 bisec = -edgeDir[i1] + edgeDir[i];
12478 bisecSize = bisec.Modulus();
12480 bisec /= bisecSize;
12482 gp_XY dirToN = uvToFix - p;
12483 double distToN = bisec * dirToN;
12484 if ( bisec * dirToN < 0 )
12485 distToN = -distToN;
12487 double wgt = edgeSize[i1] + edgeSize[i];
12488 newPos += ( p + bisec * distToN ) * wgt;
12495 //================================================================================
12497 * \brief Keep a _LayerEdge inflated along the EDGE
12499 //================================================================================
12501 void _Shrinker1D::AddEdge( const _LayerEdge* e,
12502 _EdgesOnShape& eos,
12503 SMESH_MesherHelper& helper )
12506 if ( _nodes.empty() )
12508 _edges[0] = _edges[1] = 0;
12511 // check _LayerEdge
12512 if ( e == _edges[0] || e == _edges[1] || e->_nodes.size() < 2 )
12514 if ( eos.SWOLType() != TopAbs_EDGE )
12515 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12516 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
12517 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12519 // store _LayerEdge
12520 _geomEdge = TopoDS::Edge( eos._sWOL );
12522 BRep_Tool::Range( _geomEdge, f,l );
12523 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
12524 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
12526 // Check if the nodes are already shrunk by another SOLID
12528 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
12529 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
12531 _done = (( tgtNode0 && tgtNode0->NbInverseElements( SMDSAbs_Edge ) == 2 ) ||
12532 ( tgtNode1 && tgtNode1->NbInverseElements( SMDSAbs_Edge ) == 2 ));
12534 _nodes.resize( 1, nullptr );
12538 if ( _nodes.empty() )
12540 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
12541 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
12543 TopLoc_Location loc;
12544 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
12545 GeomAdaptor_Curve aCurve(C, f,l);
12546 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
12548 smIdType nbExpectNodes = eSubMesh->NbNodes();
12549 _initU .reserve( nbExpectNodes );
12550 _normPar.reserve( nbExpectNodes );
12551 _nodes .reserve( nbExpectNodes );
12552 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
12553 while ( nIt->more() )
12555 const SMDS_MeshNode* node = nIt->next();
12557 // skip refinement nodes
12558 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
12559 node == tgtNode0 || node == tgtNode1 )
12561 bool hasMarkedFace = false;
12562 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
12563 while ( fIt->more() && !hasMarkedFace )
12564 hasMarkedFace = fIt->next()->isMarked();
12565 if ( !hasMarkedFace )
12568 _nodes.push_back( node );
12569 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
12570 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
12571 _normPar.push_back( len / totLen );
12576 // remove target node of the _LayerEdge from _nodes
12577 size_t nbFound = 0;
12578 for ( size_t i = 0; i < _nodes.size(); ++i )
12579 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
12580 _nodes[i] = 0, nbFound++;
12581 if ( nbFound == _nodes.size() )
12586 //================================================================================
12588 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
12590 //================================================================================
12592 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
12594 if ( _done || _nodes.empty())
12596 const _LayerEdge* e = _edges[0];
12597 if ( !e ) e = _edges[1];
12600 _done = (( !_edges[0] || _edges[0]->Is( _LayerEdge::SHRUNK )) &&
12601 ( !_edges[1] || _edges[1]->Is( _LayerEdge::SHRUNK )));
12604 if ( set3D || _done )
12606 dumpFunction(SMESH_Comment("shrink1D_E") << helper.GetMeshDS()->ShapeToIndex( _geomEdge )<<
12607 "_F" << helper.GetSubShapeID() );
12608 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
12609 GeomAdaptor_Curve aCurve(C, f,l);
12612 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12614 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12615 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
12617 for ( size_t i = 0; i < _nodes.size(); ++i )
12619 if ( !_nodes[i] ) continue;
12620 double len = totLen * _normPar[i];
12621 GCPnts_AbscissaPoint discret( aCurve, len, f );
12622 if ( !discret.IsDone() )
12623 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
12624 double u = discret.Parameter();
12625 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12626 pos->SetUParameter( u );
12627 gp_Pnt p = C->Value( u );
12628 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
12629 dumpMove( _nodes[i] );
12635 BRep_Tool::Range( _geomEdge, f,l );
12637 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12639 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12641 for ( size_t i = 0; i < _nodes.size(); ++i )
12643 if ( !_nodes[i] ) continue;
12644 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
12645 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12646 pos->SetUParameter( u );
12651 //================================================================================
12653 * \brief Restore initial parameters of nodes on EDGE
12655 //================================================================================
12657 void _Shrinker1D::RestoreParams()
12660 for ( size_t i = 0; i < _nodes.size(); ++i )
12662 if ( !_nodes[i] ) continue;
12663 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12664 pos->SetUParameter( _initU[i] );
12669 //================================================================================
12671 * \brief Replace source nodes by target nodes in shrunk mesh edges
12673 //================================================================================
12675 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
12677 const SMDS_MeshNode* nodes[3];
12678 for ( int i = 0; i < 2; ++i )
12680 if ( !_edges[i] ) continue;
12682 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
12683 if ( !eSubMesh ) return;
12684 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
12685 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
12686 const SMDS_MeshNode* scdNode = _edges[i]->_nodes[1];
12687 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
12688 while ( eIt->more() )
12690 const SMDS_MeshElement* e = eIt->next();
12691 if ( !eSubMesh->Contains( e ) || e->GetNodeIndex( scdNode ) >= 0 )
12693 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
12694 for ( int iN = 0; iN < e->NbNodes(); ++iN )
12696 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
12697 nodes[iN] = ( n == srcNode ? tgtNode : n );
12699 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
12704 //================================================================================
12706 * \brief Setup quadPoints
12708 //================================================================================
12710 _Mapper2D::_Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap )
12712 size_t i, iSize = _quadPoints.iSize = param2ColumnMap.size();
12713 size_t j, jSize = _quadPoints.jSize = param2ColumnMap.begin()->second.size();
12714 if ( _quadPoints.iSize < 3 ||
12715 _quadPoints.jSize < 3 )
12717 _quadPoints.uv_grid.resize( iSize * jSize );
12721 for ( auto & u_columnNodes : param2ColumnMap )
12723 for ( j = 0; j < u_columnNodes.second.size(); ++j )
12724 _quadPoints.UVPt( i, j ).node = u_columnNodes.second[ j ];
12728 // compute x parameter on borders
12729 uvPnt( 0, 0 ).x = 0;
12730 uvPnt( 0, jSize-1 ).x = 0;
12731 gp_Pnt p0, pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12732 gp_Pnt p1, pPrev1 = SMESH_NodeXYZ( uvPnt( 0, jSize-1 ).node );
12733 for ( i = 1; i < iSize; ++i )
12735 p0 = SMESH_NodeXYZ( uvPnt( i, 0 ).node );
12736 p1 = SMESH_NodeXYZ( uvPnt( i, jSize-1 ).node );
12737 uvPnt( i, 0 ).x = uvPnt( i-1, 0 ).x + p0.Distance( pPrev0 );
12738 uvPnt( i, jSize-1 ).x = uvPnt( i-1, jSize-1 ).x + p1.Distance( pPrev1 );
12742 for ( i = 1; i < iSize-1; ++i )
12744 uvPnt( i, 0 ).x /= uvPnt( iSize-1, 0 ).x;
12745 uvPnt( i, jSize-1 ).x /= uvPnt( iSize-1, jSize-1 ).x;
12746 uvPnt( i, 0 ).y = 0;
12747 uvPnt( i, jSize-1 ).y = 1;
12750 // compute y parameter on borders
12751 uvPnt( 0, 0 ).y = 0;
12752 uvPnt( iSize-1, 0 ).y = 0;
12753 pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12754 pPrev1 = SMESH_NodeXYZ( uvPnt( iSize-1, 0 ).node );
12755 for ( j = 1; j < jSize; ++j )
12757 p0 = SMESH_NodeXYZ( uvPnt( 0, j ).node );
12758 p1 = SMESH_NodeXYZ( uvPnt( iSize-1, j ).node );
12759 uvPnt( 0, j ).y = uvPnt( 0, j-1 ).y + p0.Distance( pPrev0 );
12760 uvPnt( iSize-1, j ).y = uvPnt( iSize-1, j-1 ).y + p1.Distance( pPrev1 );
12764 for ( j = 1; j < jSize-1; ++j )
12766 uvPnt( 0, j ).y /= uvPnt( 0, jSize-1 ).y;
12767 uvPnt( iSize-1, j ).y /= uvPnt( iSize-1, jSize-1 ).y;
12768 uvPnt( 0, j ).x = 0;
12769 uvPnt( iSize-1, j ).x = 1;
12772 // compute xy of internal nodes
12773 for ( i = 1; i < iSize-1; ++i )
12775 const double x0 = uvPnt( i, 0 ).x;
12776 const double x1 = uvPnt( i, jSize-1 ).x;
12777 for ( j = 1; j < jSize-1; ++j )
12779 const double y0 = uvPnt( 0, j ).y;
12780 const double y1 = uvPnt( iSize-1, j ).y;
12781 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
12782 double y = y0 + x * (y1 - y0);
12783 uvPnt( i, j ).x = x;
12784 uvPnt( i, j ).y = y;
12788 // replace base nodes with target ones
12789 for ( i = 0; i < iSize; ++i )
12790 for ( j = 0; j < jSize; ++j )
12792 auto n2e = n2eMap.find( uvPnt( i, j ).node );
12793 uvPnt( i, j ).node = n2e->second->_nodes.back();
12799 //================================================================================
12801 * \brief Compute positions of nodes of 2D structured mesh using TFI
12803 //================================================================================
12805 bool _Mapper2D::ComputeNodePositions()
12807 if ( _quadPoints.uv_grid.empty() )
12810 size_t i, iSize = _quadPoints.iSize;
12811 size_t j, jSize = _quadPoints.jSize;
12813 SMESH_NodeXYZ a0 ( uvPnt( 0, 0 ).node );
12814 SMESH_NodeXYZ a1 ( uvPnt( iSize-1, 0 ).node );
12815 SMESH_NodeXYZ a2 ( uvPnt( iSize-1, jSize-1 ).node );
12816 SMESH_NodeXYZ a3 ( uvPnt( 0, jSize-1 ).node );
12818 for ( i = 1; i < iSize-1; ++i )
12820 SMESH_NodeXYZ p0 ( uvPnt( i, 0 ).node );
12821 SMESH_NodeXYZ p2 ( uvPnt( i, jSize-1 ).node );
12822 for ( j = 1; j < jSize-1; ++j )
12824 SMESH_NodeXYZ p1 ( uvPnt( iSize-1, j ).node );
12825 SMESH_NodeXYZ p3 ( uvPnt( 0, j ).node );
12826 double x = uvPnt( i, j ).x;
12827 double y = uvPnt( i, j ).y;
12829 gp_XYZ p = SMESH_MesherHelper::calcTFI( x, y, a0,a1,a2,a3, p0,p1,p2,p3 );
12830 const_cast< SMDS_MeshNode* >( uvPnt( i, j ).node )->setXYZ( p.X(), p.Y(), p.Z() );
12832 dumpMove( uvPnt( i, j ).node );
12838 //================================================================================
12840 * \brief Creates 2D and 1D elements on boundaries of new prisms
12842 //================================================================================
12844 bool _ViscousBuilder::addBoundaryElements(_SolidData& data)
12846 bool addAllBoundaryElements = true;
12847 SMESH_MesherHelper helper( *_mesh );
12849 vector< const SMDS_MeshNode* > faceNodes;
12851 //for ( size_t i = 0; i < _sdVec.size(); ++i )
12853 //_SolidData& data = _sdVec[i];
12854 TopTools_IndexedMapOfShape geomEdges;
12855 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
12856 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
12858 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
12859 const TGeomID edgeID = getMeshDS()->ShapeToIndex( E );
12860 if ( data._noShrinkShapes.count( edgeID ))
12863 // Get _LayerEdge's based on E
12865 map< double, const SMDS_MeshNode* > u2nodes;
12866 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
12869 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
12870 TNode2Edge & n2eMap = data._n2eMap;
12871 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
12873 //check if 2D elements are needed on E
12874 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
12875 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
12876 ledges.push_back( n2e->second );
12878 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
12879 continue; // no layers on E
12880 ledges.push_back( n2eMap[ u2n->second ]);
12882 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
12883 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
12884 int nbSharedPyram = 0;
12885 SMDS_ElemIteratorPtr vIt = tgtN1->GetInverseElementIterator(SMDSAbs_Volume);
12886 while ( vIt->more() )
12888 const SMDS_MeshElement* v = vIt->next();
12889 nbSharedPyram += int( v->GetNodeIndex( tgtN0 ) >= 0 );
12891 if ( nbSharedPyram > 1 )
12892 continue; // not free border of the pyramid
12895 faceNodes.push_back( ledges[0]->_nodes[0] );
12896 faceNodes.push_back( ledges[1]->_nodes[0] );
12897 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
12898 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
12900 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
12901 continue; // faces already created
12903 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
12904 if ( n2eMap[ u2n->second ] != nullptr )
12905 ledges.push_back( n2eMap[ u2n->second ]);
12906 else /*some boundary elements might be lost because the connectivity of the face is not entirely defined on this edge*/
12907 addAllBoundaryElements = false;
12909 // Find out orientation and type of face to create
12910 bool reverse = false, isOnFace;
12913 map< TGeomID, TopoDS_Shape >::iterator e2f = data._shrinkShape2Shape.find( edgeID );
12914 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
12916 F = e2f->second.Oriented( TopAbs_FORWARD );
12917 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
12918 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
12919 reverse = !reverse, F.Reverse();
12920 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
12921 reverse = !reverse;
12923 else if ( !data._ignoreFaceIds.count( e2f->first ))
12925 // find FACE with layers sharing E
12926 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE, &data._solid );
12928 F = *( fIt->next() );
12930 // Find the sub-mesh to add new faces
12931 SMESHDS_SubMesh* sm = 0;
12933 sm = getMeshDS()->MeshElements( F );
12935 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
12937 return error("error in addBoundaryElements()", data._index);
12939 // Find a proxy sub-mesh of the FACE of an adjacent SOLID, which will use the new boundary
12940 // faces for 3D meshing (PAL23414)
12941 SMESHDS_SubMesh* adjSM = 0;
12944 const TGeomID faceID = sm->GetID();
12945 PShapeIteratorPtr soIt = helper.GetAncestors( F, *_mesh, TopAbs_SOLID );
12946 while ( const TopoDS_Shape* solid = soIt->next() )
12947 if ( !solid->IsSame( data._solid ))
12949 size_t iData = _solids.FindIndex( *solid ) - 1;
12950 if ( iData < _sdVec.size() &&
12951 _sdVec[ iData ]._ignoreFaceIds.count( faceID ) &&
12952 _sdVec[ iData ]._shrinkShape2Shape.count( edgeID ) == 0 )
12954 SMESH_ProxyMesh::SubMesh* proxySub =
12955 _sdVec[ iData ]._proxyMesh->getFaceSubM( TopoDS::Face( F ), /*create=*/false);
12956 if ( proxySub && proxySub->NbElements() > 0 )
12963 const int dj1 = reverse ? 0 : 1;
12964 const int dj2 = reverse ? 1 : 0;
12965 vector< const SMDS_MeshElement*> ff; // new faces row
12966 SMESHDS_Mesh* m = getMeshDS();
12967 for ( size_t j = 1; j < ledges.size(); ++j )
12969 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
12970 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
12971 ff.resize( std::max( nn1.size(), nn2.size() ), NULL );
12972 if ( nn1.size() == nn2.size() )
12975 for ( size_t z = 1; z < nn1.size(); ++z )
12976 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12978 for ( size_t z = 1; z < nn1.size(); ++z )
12979 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12981 else if ( nn1.size() == 1 )
12984 for ( size_t z = 1; z < nn2.size(); ++z )
12985 sm->AddElement( ff[z-1] = m->AddFace( nn1[0], nn2[z-1], nn2[z] ));
12987 for ( size_t z = 1; z < nn2.size(); ++z )
12988 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
12993 for ( size_t z = 1; z < nn1.size(); ++z )
12994 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[0], nn1[z] ));
12996 for ( size_t z = 1; z < nn1.size(); ++z )
12997 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
13000 if ( adjSM ) // add faces to a proxy SM of the adjacent SOLID
13002 for ( size_t z = 0; z < ff.size(); ++z )
13004 adjSM->AddElement( ff[ z ]);
13010 for ( int isFirst = 0; isFirst < 2; ++isFirst )
13012 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
13013 _EdgesOnShape* eos = data.GetShapeEdges( edge );
13014 if ( eos && eos->SWOLType() == TopAbs_EDGE )
13016 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
13017 if ( nn.size() < 2 || nn[1]->NbInverseElements( SMDSAbs_Edge ) >= 2 )
13019 helper.SetSubShape( eos->_sWOL );
13020 helper.SetElementsOnShape( true );
13021 for ( size_t z = 1; z < nn.size(); ++z )
13022 helper.AddEdge( nn[z-1], nn[z] );
13026 } // loop on EDGE's
13027 } // loop on _SolidData's
13029 return addAllBoundaryElements;