1 // Copyright (C) 2007-2019 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // File : StdMeshers_ViscousLayers.cxx
21 // Created : Wed Dec 1 15:15:34 2010
22 // Author : Edward AGAPOV (eap)
24 #include "StdMeshers_ViscousLayers.hxx"
26 #include "ObjectPool.hxx"
27 #include "SMDS_EdgePosition.hxx"
28 #include "SMDS_FaceOfNodes.hxx"
29 #include "SMDS_FacePosition.hxx"
30 #include "SMDS_MeshNode.hxx"
31 #include "SMDS_PolygonalFaceOfNodes.hxx"
32 #include "SMDS_SetIterator.hxx"
33 #include "SMESHDS_Group.hxx"
34 #include "SMESHDS_Hypothesis.hxx"
35 #include "SMESHDS_Mesh.hxx"
36 #include "SMESH_Algo.hxx"
37 #include "SMESH_Block.hxx"
38 #include "SMESH_ComputeError.hxx"
39 #include "SMESH_ControlsDef.hxx"
40 #include "SMESH_Gen.hxx"
41 #include "SMESH_Group.hxx"
42 #include "SMESH_HypoFilter.hxx"
43 #include "SMESH_Mesh.hxx"
44 #include "SMESH_MeshAlgos.hxx"
45 #include "SMESH_MeshEditor.hxx"
46 #include "SMESH_MesherHelper.hxx"
47 #include "SMESH_ProxyMesh.hxx"
48 #include "SMESH_subMesh.hxx"
49 #include "SMESH_subMeshEventListener.hxx"
50 #include "StdMeshers_FaceSide.hxx"
51 #include "StdMeshers_ProjectionUtils.hxx"
52 #include "StdMeshers_ViscousLayers2D.hxx"
54 #include <Adaptor3d_HSurface.hxx>
55 #include <BRepAdaptor_Curve.hxx>
56 #include <BRepAdaptor_Curve2d.hxx>
57 #include <BRepAdaptor_Surface.hxx>
58 //#include <BRepLProp_CLProps.hxx>
59 #include <BRepLProp_SLProps.hxx>
60 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
61 #include <BRep_Tool.hxx>
62 #include <Bnd_B2d.hxx>
63 #include <Bnd_B3d.hxx>
65 #include <GCPnts_AbscissaPoint.hxx>
66 #include <GCPnts_TangentialDeflection.hxx>
67 #include <Geom2d_Circle.hxx>
68 #include <Geom2d_Line.hxx>
69 #include <Geom2d_TrimmedCurve.hxx>
70 #include <GeomAdaptor_Curve.hxx>
71 #include <GeomLib.hxx>
72 #include <Geom_Circle.hxx>
73 #include <Geom_Curve.hxx>
74 #include <Geom_Line.hxx>
75 #include <Geom_TrimmedCurve.hxx>
76 #include <Precision.hxx>
77 #include <Standard_ErrorHandler.hxx>
78 #include <Standard_Failure.hxx>
79 #include <TColStd_Array1OfReal.hxx>
81 #include <TopExp_Explorer.hxx>
82 #include <TopTools_IndexedMapOfShape.hxx>
83 #include <TopTools_ListOfShape.hxx>
84 #include <TopTools_MapIteratorOfMapOfShape.hxx>
85 #include <TopTools_MapOfShape.hxx>
87 #include <TopoDS_Edge.hxx>
88 #include <TopoDS_Face.hxx>
89 #include <TopoDS_Vertex.hxx>
91 #include <gp_Cone.hxx>
92 #include <gp_Sphere.hxx>
101 #include <unordered_map>
105 //#define __NOT_INVALIDATE_BAD_SMOOTH
106 //#define __NODES_AT_POS
109 #define INCREMENTAL_SMOOTH // smooth only if min angle is too small
110 #define BLOCK_INFLATION // of individual _LayerEdge's
111 #define OLD_NEF_POLYGON
115 //================================================================================
120 enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
122 const double theMinSmoothCosin = 0.1;
123 const double theSmoothThickToElemSizeRatio = 0.6;
124 const double theMinSmoothTriaAngle = 30;
125 const double theMinSmoothQuadAngle = 45;
127 // what part of thickness is allowed till intersection
128 // (defined by SALOME_TESTS/Grids/smesh/viscous_layers_00/A5)
129 const double theThickToIntersection = 1.5;
131 bool needSmoothing( double cosin, double tgtThick, double elemSize )
133 return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
135 double getSmoothingThickness( double cosin, double elemSize )
137 return theSmoothThickToElemSizeRatio * elemSize / cosin;
141 * \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
142 * It is stored in a SMESH_subMesh of the SOLID as SMESH_subMeshEventListenerData
144 struct _MeshOfSolid : public SMESH_ProxyMesh,
145 public SMESH_subMeshEventListenerData
147 bool _n2nMapComputed;
148 SMESH_ComputeErrorPtr _warning;
150 _MeshOfSolid( SMESH_Mesh* mesh)
151 :SMESH_subMeshEventListenerData( /*isDeletable=*/true),_n2nMapComputed(false)
153 SMESH_ProxyMesh::setMesh( *mesh );
156 // returns submesh for a geom face
157 SMESH_ProxyMesh::SubMesh* getFaceSubM(const TopoDS_Face& F, bool create=false)
159 TGeomID i = SMESH_ProxyMesh::shapeIndex(F);
160 return create ? SMESH_ProxyMesh::getProxySubMesh(i) : findProxySubMesh(i);
162 void setNode2Node(const SMDS_MeshNode* srcNode,
163 const SMDS_MeshNode* proxyNode,
164 const SMESH_ProxyMesh::SubMesh* subMesh)
166 SMESH_ProxyMesh::setNode2Node( srcNode,proxyNode,subMesh);
169 //--------------------------------------------------------------------------------
171 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
172 * It is used to clear an inferior dim sub-meshes modified by viscous layers
174 class _ShrinkShapeListener : SMESH_subMeshEventListener
176 _ShrinkShapeListener()
177 : SMESH_subMeshEventListener(/*isDeletable=*/false,
178 "StdMeshers_ViscousLayers::_ShrinkShapeListener") {}
180 static SMESH_subMeshEventListener* Get() { static _ShrinkShapeListener l; return &l; }
181 virtual void ProcessEvent(const int event,
183 SMESH_subMesh* solidSM,
184 SMESH_subMeshEventListenerData* data,
185 const SMESH_Hypothesis* hyp)
187 if ( SMESH_subMesh::COMPUTE_EVENT == eventType && solidSM->IsEmpty() && data )
189 SMESH_subMeshEventListener::ProcessEvent(event,eventType,solidSM,data,hyp);
193 //--------------------------------------------------------------------------------
195 * \brief Listener of events of 3D sub-meshes computed with viscous layers.
196 * It is used to store data computed by _ViscousBuilder for a sub-mesh and to
197 * delete the data as soon as it has been used
199 class _ViscousListener : SMESH_subMeshEventListener
202 SMESH_subMeshEventListener(/*isDeletable=*/false,
203 "StdMeshers_ViscousLayers::_ViscousListener") {}
204 static SMESH_subMeshEventListener* Get() { static _ViscousListener l; return &l; }
206 virtual void ProcessEvent(const int event,
208 SMESH_subMesh* subMesh,
209 SMESH_subMeshEventListenerData* data,
210 const SMESH_Hypothesis* hyp)
212 if (( SMESH_subMesh::COMPUTE_EVENT == eventType ) &&
213 ( SMESH_subMesh::CHECK_COMPUTE_STATE != event &&
214 SMESH_subMesh::SUBMESH_COMPUTED != event ))
216 // delete SMESH_ProxyMesh containing temporary faces
217 subMesh->DeleteEventListener( this );
220 // Finds or creates proxy mesh of the solid
221 static _MeshOfSolid* GetSolidMesh(SMESH_Mesh* mesh,
222 const TopoDS_Shape& solid,
225 if ( !mesh ) return 0;
226 SMESH_subMesh* sm = mesh->GetSubMesh(solid);
227 _MeshOfSolid* data = (_MeshOfSolid*) sm->GetEventListenerData( Get() );
228 if ( !data && toCreate )
230 data = new _MeshOfSolid(mesh);
231 data->mySubMeshes.push_back( sm ); // to find SOLID by _MeshOfSolid
232 sm->SetEventListener( Get(), data, sm );
236 // Removes proxy mesh of the solid
237 static void RemoveSolidMesh(SMESH_Mesh* mesh, const TopoDS_Shape& solid)
239 mesh->GetSubMesh(solid)->DeleteEventListener( _ViscousListener::Get() );
243 //================================================================================
245 * \brief sets a sub-mesh event listener to clear sub-meshes of sub-shapes of
246 * the main shape when sub-mesh of the main shape is cleared,
247 * for example to clear sub-meshes of FACEs when sub-mesh of a SOLID
250 //================================================================================
252 void ToClearSubWithMain( SMESH_subMesh* sub, const TopoDS_Shape& main)
254 SMESH_subMesh* mainSM = sub->GetFather()->GetSubMesh( main );
255 SMESH_subMeshEventListenerData* data =
256 mainSM->GetEventListenerData( _ShrinkShapeListener::Get());
259 if ( find( data->mySubMeshes.begin(), data->mySubMeshes.end(), sub ) ==
260 data->mySubMeshes.end())
261 data->mySubMeshes.push_back( sub );
265 data = SMESH_subMeshEventListenerData::MakeData( /*dependent=*/sub );
266 sub->SetEventListener( _ShrinkShapeListener::Get(), data, /*whereToListenTo=*/mainSM );
270 //--------------------------------------------------------------------------------
272 * \brief Simplex (triangle or tetrahedron) based on 1 (tria) or 2 (tet) nodes of
273 * _LayerEdge and 2 nodes of the mesh surface beening smoothed.
274 * The class is used to check validity of face or volumes around a smoothed node;
275 * it stores only 2 nodes as the other nodes are stored by _LayerEdge.
279 const SMDS_MeshNode *_nPrev, *_nNext; // nodes on a smoothed mesh surface
280 const SMDS_MeshNode *_nOpp; // in 2D case, a node opposite to a smoothed node in QUAD
281 _Simplex(const SMDS_MeshNode* nPrev=0,
282 const SMDS_MeshNode* nNext=0,
283 const SMDS_MeshNode* nOpp=0)
284 : _nPrev(nPrev), _nNext(nNext), _nOpp(nOpp) {}
285 bool IsForward(const gp_XYZ* pntSrc, const gp_XYZ* pntTgt, double& vol) const
287 const double M[3][3] =
288 {{ _nNext->X() - pntSrc->X(), _nNext->Y() - pntSrc->Y(), _nNext->Z() - pntSrc->Z() },
289 { pntTgt->X() - pntSrc->X(), pntTgt->Y() - pntSrc->Y(), pntTgt->Z() - pntSrc->Z() },
290 { _nPrev->X() - pntSrc->X(), _nPrev->Y() - pntSrc->Y(), _nPrev->Z() - pntSrc->Z() }};
291 vol = ( + M[0][0] * M[1][1] * M[2][2]
292 + M[0][1] * M[1][2] * M[2][0]
293 + M[0][2] * M[1][0] * M[2][1]
294 - M[0][0] * M[1][2] * M[2][1]
295 - M[0][1] * M[1][0] * M[2][2]
296 - M[0][2] * M[1][1] * M[2][0]);
299 bool IsForward(const SMDS_MeshNode* nSrc, const gp_XYZ& pTgt, double& vol) const
301 SMESH_TNodeXYZ pSrc( nSrc );
302 return IsForward( &pSrc, &pTgt, vol );
304 bool IsForward(const gp_XY& tgtUV,
305 const SMDS_MeshNode* smoothedNode,
306 const TopoDS_Face& face,
307 SMESH_MesherHelper& helper,
308 const double refSign) const
310 gp_XY prevUV = helper.GetNodeUV( face, _nPrev, smoothedNode );
311 gp_XY nextUV = helper.GetNodeUV( face, _nNext, smoothedNode );
312 gp_Vec2d v1( tgtUV, prevUV ), v2( tgtUV, nextUV );
314 return d*refSign > 1e-100;
316 bool IsMinAngleOK( const gp_XYZ& pTgt, double& minAngle ) const
318 SMESH_TNodeXYZ pPrev( _nPrev ), pNext( _nNext );
319 if ( !_nOpp ) // triangle
321 gp_Vec tp( pPrev - pTgt ), pn( pNext - pPrev ), nt( pTgt - pNext );
322 double tp2 = tp.SquareMagnitude();
323 double pn2 = pn.SquareMagnitude();
324 double nt2 = nt.SquareMagnitude();
326 if ( tp2 < pn2 && tp2 < nt2 )
327 minAngle = ( nt * -pn ) * ( nt * -pn ) / nt2 / pn2;
328 else if ( pn2 < nt2 )
329 minAngle = ( tp * -nt ) * ( tp * -nt ) / tp2 / nt2;
331 minAngle = ( pn * -tp ) * ( pn * -tp ) / pn2 / tp2;
333 static double theMaxCos2 = ( Cos( theMinSmoothTriaAngle * M_PI / 180. ) *
334 Cos( theMinSmoothTriaAngle * M_PI / 180. ));
335 return minAngle < theMaxCos2;
339 SMESH_TNodeXYZ pOpp( _nOpp );
340 gp_Vec tp( pPrev - pTgt ), po( pOpp - pPrev ), on( pNext - pOpp), nt( pTgt - pNext );
341 double tp2 = tp.SquareMagnitude();
342 double po2 = po.SquareMagnitude();
343 double on2 = on.SquareMagnitude();
344 double nt2 = nt.SquareMagnitude();
345 minAngle = Max( Max((( tp * -nt ) * ( tp * -nt ) / tp2 / nt2 ),
346 (( po * -tp ) * ( po * -tp ) / po2 / tp2 )),
347 Max((( on * -po ) * ( on * -po ) / on2 / po2 ),
348 (( nt * -on ) * ( nt * -on ) / nt2 / on2 )));
350 static double theMaxCos2 = ( Cos( theMinSmoothQuadAngle * M_PI / 180. ) *
351 Cos( theMinSmoothQuadAngle * M_PI / 180. ));
352 return minAngle < theMaxCos2;
355 bool IsNeighbour(const _Simplex& other) const
357 return _nPrev == other._nNext || _nNext == other._nPrev;
359 bool Includes( const SMDS_MeshNode* node ) const { return _nPrev == node || _nNext == node; }
360 static void GetSimplices( const SMDS_MeshNode* node,
361 vector<_Simplex>& simplices,
362 const set<TGeomID>& ingnoreShapes,
363 const _SolidData* dataToCheckOri = 0,
364 const bool toSort = false);
365 static void SortSimplices(vector<_Simplex>& simplices);
367 //--------------------------------------------------------------------------------
369 * Structure used to take into account surface curvature while smoothing
374 double _k; // factor to correct node smoothed position
375 double _h2lenRatio; // avgNormProj / (2*avgDist)
376 gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
378 static _Curvature* New( double avgNormProj, double avgDist );
379 double lenDelta(double len) const { return _k * ( _r + len ); }
380 double lenDeltaByDist(double dist) const { return dist * _h2lenRatio; }
382 //--------------------------------------------------------------------------------
386 struct _EdgesOnShape;
388 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
390 //--------------------------------------------------------------------------------
392 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
393 * and a node of the most internal layer (_nodes.back())
397 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
399 vector< const SMDS_MeshNode*> _nodes;
401 gp_XYZ _normal; // to boundary of solid
402 vector<gp_XYZ> _pos; // points computed during inflation
403 double _len; // length achieved with the last inflation step
404 double _maxLen; // maximal possible length
405 double _cosin; // of angle (_normal ^ surface)
406 double _minAngle; // of _simplices
407 double _lenFactor; // to compute _len taking _cosin into account
410 // simplices connected to the source node (_nodes[0]);
411 // used for smoothing and quality check of _LayerEdge's based on the FACE
412 vector<_Simplex> _simplices;
413 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
414 PSmooFun _smooFunction; // smoothing function
415 _Curvature* _curvature;
416 // data for smoothing of _LayerEdge's based on the EDGE
417 _2NearEdges* _2neibors;
419 enum EFlags { TO_SMOOTH = 0x0000001,
420 MOVED = 0x0000002, // set by _neibors[i]->SetNewLength()
421 SMOOTHED = 0x0000004, // set by _LayerEdge::Smooth()
422 DIFFICULT = 0x0000008, // near concave VERTEX
423 ON_CONCAVE_FACE = 0x0000010,
424 BLOCKED = 0x0000020, // not to inflate any more
425 INTERSECTED = 0x0000040, // close intersection with a face found
426 NORMAL_UPDATED = 0x0000080,
427 UPD_NORMAL_CONV = 0x0000100, // to update normal on boundary of concave FACE
428 MARKED = 0x0000200, // local usage
429 MULTI_NORMAL = 0x0000400, // a normal is invisible by some of surrounding faces
430 NEAR_BOUNDARY = 0x0000800, // is near FACE boundary forcing smooth
431 SMOOTHED_C1 = 0x0001000, // is on _eosC1
432 DISTORTED = 0x0002000, // was bad before smoothing
433 RISKY_SWOL = 0x0004000, // SWOL is parallel to a source FACE
434 SHRUNK = 0x0008000, // target node reached a tgt position while shrink()
435 UNUSED_FLAG = 0x0100000 // to add user flags after
437 bool Is ( int flag ) const { return _flags & flag; }
438 void Set ( int flag ) { _flags |= flag; }
439 void Unset( int flag ) { _flags &= ~flag; }
440 std::string DumpFlags() const; // debug
442 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
443 bool SetNewLength2d( Handle(Geom_Surface)& surface,
444 const TopoDS_Face& F,
446 SMESH_MesherHelper& helper );
447 void SetDataByNeighbors( const SMDS_MeshNode* n1,
448 const SMDS_MeshNode* n2,
449 const _EdgesOnShape& eos,
450 SMESH_MesherHelper& helper);
451 void Block( _SolidData& data );
452 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
453 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
454 const TNode2Edge& n2eMap);
455 void SmoothPos( const vector< double >& segLen, const double tol );
456 int GetSmoothedPos( const double tol );
457 int Smooth(const int step, const bool isConcaveFace, bool findBest);
458 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
459 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
460 void SmoothWoCheck();
461 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
462 const TopoDS_Face& F,
463 SMESH_MesherHelper& helper);
464 void MoveNearConcaVer( const _EdgesOnShape* eov,
465 const _EdgesOnShape* eos,
467 vector< _LayerEdge* > & badSmooEdges);
468 bool FindIntersection( SMESH_ElementSearcher& searcher,
470 const double& epsilon,
472 const SMDS_MeshElement** face = 0);
473 bool SegTriaInter( const gp_Ax1& lastSegment,
478 const double& epsilon) const;
479 bool SegTriaInter( const gp_Ax1& lastSegment,
480 const SMDS_MeshNode* n0,
481 const SMDS_MeshNode* n1,
482 const SMDS_MeshNode* n2,
484 const double& epsilon) const
485 { return SegTriaInter( lastSegment,
486 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
489 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
490 gp_XYZ PrevCheckPos( _EdgesOnShape* eos=0 ) const;
491 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
492 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which=-1 ) const;
493 bool IsOnEdge() const { return _2neibors; }
494 bool IsOnFace() const { return ( _nodes[0]->GetPosition()->GetDim() == 2 ); }
495 int BaseShapeDim() const { return _nodes[0]->GetPosition()->GetDim(); }
496 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
497 void SetCosin( double cosin );
498 void SetNormal( const gp_XYZ& n ) { _normal = n; }
499 void SetMaxLen( double l ) { _maxLen = l; }
500 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
501 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
502 void SetSmooLen( double len ) { // set _len at which smoothing is needed
503 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
505 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
507 gp_XYZ smoothLaplacian();
508 gp_XYZ smoothAngular();
509 gp_XYZ smoothLengthWeighted();
510 gp_XYZ smoothCentroidal();
511 gp_XYZ smoothNefPolygon();
513 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
514 static const int theNbSmooFuns = FUN_NB;
515 static PSmooFun _funs[theNbSmooFuns];
516 static const char* _funNames[theNbSmooFuns+1];
517 int smooFunID( PSmooFun fun=0) const;
519 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
520 &_LayerEdge::smoothLengthWeighted,
521 &_LayerEdge::smoothCentroidal,
522 &_LayerEdge::smoothNefPolygon,
523 &_LayerEdge::smoothAngular };
524 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
532 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
534 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
535 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
538 //--------------------------------------------------------------------------------
540 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
544 gp_XY _pos, _dir, _inNorm;
545 bool IsOut( const gp_XY p, const double tol ) const
547 return _inNorm * ( p - _pos ) < -tol;
549 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
551 //const double eps = 1e-10;
552 double D = _dir.Crossed( hp._dir );
553 if ( fabs(D) < std::numeric_limits<double>::min())
555 gp_XY vec21 = _pos - hp._pos;
556 double u = hp._dir.Crossed( vec21 ) / D;
557 intPnt = _pos + _dir * u;
561 //--------------------------------------------------------------------------------
563 * Structure used to smooth a _LayerEdge based on an EDGE.
567 double _wgt [2]; // weights of _nodes
568 _LayerEdge* _edges[2];
570 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
573 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
574 ~_2NearEdges(){ delete _plnNorm; }
575 const SMDS_MeshNode* tgtNode(bool is2nd) {
576 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
578 const SMDS_MeshNode* srcNode(bool is2nd) {
579 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
582 std::swap( _wgt [0], _wgt [1] );
583 std::swap( _edges[0], _edges[1] );
585 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
586 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
588 bool include( const _LayerEdge* e ) {
589 return ( _edges[0] == e || _edges[1] == e );
594 //--------------------------------------------------------------------------------
596 * \brief Layers parameters got by averaging several hypotheses
600 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
601 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
605 void Add( const StdMeshers_ViscousLayers* hyp )
610 _nbLayers = hyp->GetNumberLayers();
611 //_thickness += hyp->GetTotalThickness();
612 _thickness = Max( _thickness, hyp->GetTotalThickness() );
613 _stretchFactor += hyp->GetStretchFactor();
614 _method = hyp->GetMethod();
615 if ( _groupName.empty() )
616 _groupName = hyp->GetGroupName();
619 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
620 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
621 int GetNumberLayers() const { return _nbLayers; }
622 int GetMethod() const { return _method; }
623 bool ToCreateGroup() const { return !_groupName.empty(); }
624 const std::string& GetGroupName() const { return _groupName; }
626 bool UseSurfaceNormal() const
627 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
628 bool ToSmooth() const
629 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
630 bool IsOffsetMethod() const
631 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
633 bool operator==( const AverageHyp& other ) const
635 return ( _nbLayers == other._nbLayers &&
636 _method == other._method &&
637 Equals( GetTotalThickness(), other.GetTotalThickness() ) &&
638 Equals( GetStretchFactor(), other.GetStretchFactor() ));
640 static bool Equals( double v1, double v2 ) { return Abs( v1 - v2 ) < 0.01 * ( v1 + v2 ); }
643 int _nbLayers, _nbHyps, _method;
644 double _thickness, _stretchFactor;
645 std::string _groupName;
648 //--------------------------------------------------------------------------------
650 * \brief _LayerEdge's on a shape and other shape data
654 vector< _LayerEdge* > _edges;
658 SMESH_subMesh * _subMesh;
659 // face or edge w/o layer along or near which _edges are inflated
661 bool _isRegularSWOL; // w/o singularities
662 // averaged StdMeshers_ViscousLayers parameters
665 _Smoother1D* _edgeSmoother;
666 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
667 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
669 typedef std::unordered_map< const SMDS_MeshElement*, gp_XYZ > TFace2NormMap;
670 TFace2NormMap _faceNormals; // if _shape is FACE
671 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
673 Handle(ShapeAnalysis_Surface) _offsetSurf;
674 _LayerEdge* _edgeForOffset;
676 _SolidData* _data; // parent SOLID
678 _LayerEdge* operator[](size_t i) const { return (_LayerEdge*) _edges[i]; }
679 size_t size() const { return _edges.size(); }
680 TopAbs_ShapeEnum ShapeType() const
681 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
682 TopAbs_ShapeEnum SWOLType() const
683 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
684 bool HasC1( const _EdgesOnShape* other ) const
685 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
686 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
687 _SolidData& GetData() const { return *_data; }
689 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0) {}
693 //--------------------------------------------------------------------------------
695 * \brief Convex FACE whose radius of curvature is less than the thickness of
696 * layers. It is used to detect distortion of prisms based on a convex
697 * FACE and to update normals to enable further increasing the thickness
703 // edges whose _simplices are used to detect prism distortion
704 vector< _LayerEdge* > _simplexTestEdges;
706 // map a sub-shape to _SolidData::_edgesOnShape
707 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
711 bool _normalsFixedOnBorders; // used in putOnOffsetSurface()
713 double GetMaxCurvature( _SolidData& data,
715 BRepLProp_SLProps& surfProp,
716 SMESH_MesherHelper& helper);
718 bool GetCenterOfCurvature( _LayerEdge* ledge,
719 BRepLProp_SLProps& surfProp,
720 SMESH_MesherHelper& helper,
721 gp_Pnt & center ) const;
722 bool CheckPrisms() const;
725 //--------------------------------------------------------------------------------
727 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
728 * at inflation up to the full thickness. A detected collision
729 * is fixed in updateNormals()
731 struct _CollisionEdges
734 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
735 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
736 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
739 //--------------------------------------------------------------------------------
741 * \brief Data of a SOLID
745 typedef const StdMeshers_ViscousLayers* THyp;
747 TopTools_MapOfShape _before; // SOLIDs to be computed before _solid
748 TGeomID _index; // SOLID id
749 _MeshOfSolid* _proxyMesh;
752 list< TopoDS_Shape > _hypShapes;
753 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
754 set< TGeomID > _reversedFaceIds;
755 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
757 double _stepSize, _stepSizeCoeff, _geomSize;
758 const SMDS_MeshNode* _stepSizeNodes[2];
760 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
762 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
763 map< TGeomID, TNode2Edge* > _s2neMap;
764 // _LayerEdge's with underlying shapes
765 vector< _EdgesOnShape > _edgesOnShape;
767 // key: an ID of shape (EDGE or VERTEX) shared by a FACE with
768 // layers and a FACE w/o layers
769 // value: the shape (FACE or EDGE) to shrink mesh on.
770 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
771 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
773 // Convex FACEs whose radius of curvature is less than the thickness of layers
774 map< TGeomID, _ConvexFace > _convexFaces;
776 // shapes (EDGEs and VERTEXes) shrink from which is forbidden due to collisions with
777 // the adjacent SOLID
778 set< TGeomID > _noShrinkShapes;
780 int _nbShapesToSmooth;
782 vector< _CollisionEdges > _collisionEdges;
783 set< TGeomID > _concaveFaces;
785 double _maxThickness; // of all _hyps
786 double _minThickness; // of all _hyps
788 double _epsilon; // precision for SegTriaInter()
790 SMESH_MesherHelper* _helper;
792 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
794 :_solid(s), _proxyMesh(m), _done(false),_helper(0) {}
795 ~_SolidData() { delete _helper; _helper = 0; }
797 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
798 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
800 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
801 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
802 return id2face == _convexFaces.end() ? 0 : & id2face->second;
804 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
805 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
806 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
807 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
809 SMESH_MesherHelper& GetHelper() const { return *_helper; }
811 void UnmarkEdges( int flag = _LayerEdge::MARKED ) {
812 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
813 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
814 _edgesOnShape[i]._edges[j]->Unset( flag );
816 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
817 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
819 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
821 //--------------------------------------------------------------------------------
823 * \brief Offset plane used in getNormalByOffset()
829 int _faceIndexNext[2];
830 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
833 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
835 void ComputeIntersectionLine( _OffsetPlane& pln,
836 const TopoDS_Edge& E,
837 const TopoDS_Vertex& V );
838 gp_XYZ GetCommonPoint(bool& isFound, const TopoDS_Vertex& V) const;
839 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
841 //--------------------------------------------------------------------------------
843 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
845 struct _CentralCurveOnEdge
848 vector< gp_Pnt > _curvaCenters;
849 vector< _LayerEdge* > _ledges;
850 vector< gp_XYZ > _normals; // new normal for each of _ledges
851 vector< double > _segLength2;
854 TopoDS_Face _adjFace;
855 bool _adjFaceToSmooth;
857 void Append( const gp_Pnt& center, _LayerEdge* ledge )
859 if ( ledge->Is( _LayerEdge::MULTI_NORMAL ))
861 if ( _curvaCenters.size() > 0 )
862 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
863 _curvaCenters.push_back( center );
864 _ledges.push_back( ledge );
865 _normals.push_back( ledge->_normal );
867 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
868 void SetShapes( const TopoDS_Edge& edge,
869 const _ConvexFace& convFace,
871 SMESH_MesherHelper& helper);
873 //--------------------------------------------------------------------------------
875 * \brief Data of node on a shrinked FACE
879 const SMDS_MeshNode* _node;
880 vector<_Simplex> _simplices; // for quality check
882 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
884 bool Smooth(int& badNb,
885 Handle(Geom_Surface)& surface,
886 SMESH_MesherHelper& helper,
887 const double refSign,
891 gp_XY computeAngularPos(vector<gp_XY>& uv,
892 const gp_XY& uvToFix,
893 const double refSign );
897 //--------------------------------------------------------------------------------
899 * \brief Builder of viscous layers
901 class _ViscousBuilder
906 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
907 const TopoDS_Shape& shape);
908 // check validity of hypotheses
909 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
910 const TopoDS_Shape& shape );
912 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
913 void RestoreListeners();
915 // computes SMESH_ProxyMesh::SubMesh::_n2n;
916 bool MakeN2NMap( _MeshOfSolid* pm );
920 bool findSolidsWithLayers();
921 bool setBefore( _SolidData& solidBefore, _SolidData& solidAfter );
922 bool findFacesWithLayers(const bool onlyWith=false);
923 void findPeriodicFaces();
924 void getIgnoreFaces(const TopoDS_Shape& solid,
925 const StdMeshers_ViscousLayers* hyp,
926 const TopoDS_Shape& hypShape,
927 set<TGeomID>& ignoreFaces);
928 void makeEdgesOnShape();
929 bool makeLayer(_SolidData& data);
930 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
931 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
932 SMESH_MesherHelper& helper, _SolidData& data);
933 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
934 const TopoDS_Face& face,
935 SMESH_MesherHelper& helper,
937 bool shiftInside=false);
938 bool getFaceNormalAtSingularity(const gp_XY& uv,
939 const TopoDS_Face& face,
940 SMESH_MesherHelper& helper,
942 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
943 gp_XYZ getNormalByOffset( _LayerEdge* edge,
944 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
946 bool lastNoOffset = false);
947 bool findNeiborsOnEdge(const _LayerEdge* edge,
948 const SMDS_MeshNode*& n1,
949 const SMDS_MeshNode*& n2,
952 void findSimplexTestEdges( _SolidData& data,
953 vector< vector<_LayerEdge*> >& edgesByGeom);
954 void computeGeomSize( _SolidData& data );
955 bool findShapesToSmooth( _SolidData& data);
956 void limitStepSizeByCurvature( _SolidData& data );
957 void limitStepSize( _SolidData& data,
958 const SMDS_MeshElement* face,
959 const _LayerEdge* maxCosinEdge );
960 void limitStepSize( _SolidData& data, const double minSize);
961 bool inflate(_SolidData& data);
962 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
963 int invalidateBadSmooth( _SolidData& data,
964 SMESH_MesherHelper& helper,
965 vector< _LayerEdge* >& badSmooEdges,
966 vector< _EdgesOnShape* >& eosC1,
968 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
969 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep,
970 vector< _EdgesOnShape* >& eosC1,
971 int smooStep=0, int moveAll=false );
972 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
973 void findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
975 SMESH_MesherHelper& helper );
976 void limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper );
977 void limitMaxLenByCurvature( _LayerEdge* e1, _LayerEdge* e2,
978 _EdgesOnShape& eos1, _EdgesOnShape& eos2,
979 const bool isSmoothable );
980 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
981 bool updateNormalsOfConvexFaces( _SolidData& data,
982 SMESH_MesherHelper& helper,
984 void updateNormalsOfC1Vertices( _SolidData& data );
985 bool updateNormalsOfSmoothed( _SolidData& data,
986 SMESH_MesherHelper& helper,
988 const double stepSize );
989 bool isNewNormalOk( _SolidData& data,
991 const gp_XYZ& newNormal);
992 bool refine(_SolidData& data);
993 bool shrink(_SolidData& data);
994 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
995 SMESH_MesherHelper& helper,
996 const SMESHDS_SubMesh* faceSubMesh );
997 void restoreNoShrink( _LayerEdge& edge ) const;
998 void fixBadFaces(const TopoDS_Face& F,
999 SMESH_MesherHelper& helper,
1002 set<const SMDS_MeshNode*> * involvedNodes=NULL);
1003 bool addBoundaryElements(_SolidData& data);
1005 bool error( const string& text, int solidID=-1 );
1006 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
1009 void makeGroupOfLE();
1012 SMESH_ComputeErrorPtr _error;
1014 vector< _SolidData > _sdVec;
1015 TopTools_IndexedMapOfShape _solids; // to find _SolidData by a solid
1016 TopTools_MapOfShape _shrunkFaces;
1017 std::unique_ptr<Periodicity> _periodicity;
1022 //--------------------------------------------------------------------------------
1024 * \brief Shrinker of nodes on the EDGE
1028 TopoDS_Edge _geomEdge;
1029 vector<double> _initU;
1030 vector<double> _normPar;
1031 vector<const SMDS_MeshNode*> _nodes;
1032 const _LayerEdge* _edges[2];
1035 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
1036 void Compute(bool set3D, SMESH_MesherHelper& helper);
1037 void RestoreParams();
1038 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
1039 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
1040 const SMDS_MeshNode* TgtNode( bool is2nd ) const
1041 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
1042 const SMDS_MeshNode* SrcNode( bool is2nd ) const
1043 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
1045 //--------------------------------------------------------------------------------
1047 * \brief Smoother of _LayerEdge's on EDGE.
1051 struct OffPnt // point of the offsetted EDGE
1053 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1054 double _len; // length reached at previous inflation step
1055 double _param; // on EDGE
1056 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1057 gp_XYZ _edgeDir;// EDGE tangent at _param
1058 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1060 vector< OffPnt > _offPoints;
1061 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1062 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1063 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1064 gp_XYZ _edgeDir[2]; // tangent at VERTEXes
1065 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1066 _EdgesOnShape& _eos;
1067 double _curveLen; // length of the EDGE
1068 std::pair<int,int> _eToSmooth[2]; // <from,to> indices of _LayerEdge's in _eos
1070 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1072 SMESH_MesherHelper& helper);
1074 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1075 _EdgesOnShape& eos )
1076 : _anaCurve( curveForSmooth ), _eos( eos )
1079 bool Perform(_SolidData& data,
1080 Handle(ShapeAnalysis_Surface)& surface,
1081 const TopoDS_Face& F,
1082 SMESH_MesherHelper& helper );
1084 void prepare(_SolidData& data );
1086 void findEdgesToSmooth();
1088 bool isToSmooth( int iE );
1090 bool smoothAnalyticEdge( _SolidData& data,
1091 Handle(ShapeAnalysis_Surface)& surface,
1092 const TopoDS_Face& F,
1093 SMESH_MesherHelper& helper);
1094 bool smoothComplexEdge( _SolidData& data,
1095 Handle(ShapeAnalysis_Surface)& surface,
1096 const TopoDS_Face& F,
1097 SMESH_MesherHelper& helper);
1098 gp_XYZ getNormalNormal( const gp_XYZ & normal,
1099 const gp_XYZ& edgeDir);
1100 _LayerEdge* getLEdgeOnV( bool is2nd )
1102 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1104 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1106 void offPointsToPython() const; // debug
1108 //--------------------------------------------------------------------------------
1110 * \brief Class of temporary mesh face.
1111 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1112 * needed because SMESH_ElementSearcher internally uses set of elements sorted by ID
1114 struct _TmpMeshFace : public SMDS_PolygonalFaceOfNodes
1116 const SMDS_MeshElement* _srcFace;
1118 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1121 const SMDS_MeshElement* srcFace=0 ):
1122 SMDS_PolygonalFaceOfNodes(nodes), _srcFace( srcFace ) { setID( ID ); setShapeID( faceID ); }
1123 virtual SMDSAbs_EntityType GetEntityType() const
1124 { return _srcFace ? _srcFace->GetEntityType() : SMDSEntity_Quadrangle; }
1125 virtual SMDSAbs_GeometryType GetGeomType() const
1126 { return _srcFace ? _srcFace->GetGeomType() : SMDSGeom_QUADRANGLE; }
1128 //--------------------------------------------------------------------------------
1130 * \brief Class of temporary mesh quadrangle face storing _LayerEdge it's based on
1132 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1134 _LayerEdge *_le1, *_le2;
1135 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1136 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1138 myNodes[0]=_le1->_nodes[0];
1139 myNodes[1]=_le1->_nodes.back();
1140 myNodes[2]=_le2->_nodes.back();
1141 myNodes[3]=_le2->_nodes[0];
1143 const SMDS_MeshNode* n( size_t i ) const
1145 return myNodes[ i ];
1147 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1149 SMESH_TNodeXYZ p0s( myNodes[0] );
1150 SMESH_TNodeXYZ p0t( myNodes[1] );
1151 SMESH_TNodeXYZ p1t( myNodes[2] );
1152 SMESH_TNodeXYZ p1s( myNodes[3] );
1153 gp_XYZ v0 = p0t - p0s;
1154 gp_XYZ v1 = p1t - p1s;
1155 gp_XYZ v01 = p1s - p0s;
1156 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1161 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1163 myNodes[0]=le1->_nodes[0];
1164 myNodes[1]=le1->_nodes.back();
1165 myNodes[2]=le2->_nodes.back();
1166 myNodes[3]=le2->_nodes[0];
1170 //--------------------------------------------------------------------------------
1172 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1173 * \warning Location of a surface is ignored
1175 struct _NodeCoordHelper
1177 SMESH_MesherHelper& _helper;
1178 const TopoDS_Face& _face;
1179 Handle(Geom_Surface) _surface;
1180 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1182 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1183 : _helper( helper ), _face( F )
1187 TopLoc_Location loc;
1188 _surface = BRep_Tool::Surface( _face, loc );
1190 if ( _surface.IsNull() )
1191 _fun = & _NodeCoordHelper::direct;
1193 _fun = & _NodeCoordHelper::byUV;
1195 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1198 gp_XYZ direct(const SMDS_MeshNode* n) const
1200 return SMESH_TNodeXYZ( n );
1202 gp_XYZ byUV (const SMDS_MeshNode* n) const
1204 gp_XY uv = _helper.GetNodeUV( _face, n );
1205 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1209 //================================================================================
1211 * \brief Check angle between vectors
1213 //================================================================================
1215 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1217 double dot = v1 * v2; // cos * |v1| * |v2|
1218 double l1 = v1.SquareMagnitude();
1219 double l2 = v2.SquareMagnitude();
1220 return (( dot * cos >= 0 ) &&
1221 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1226 ObjectPool< _LayerEdge > _edgePool;
1227 ObjectPool< _Curvature > _curvaturePool;
1228 ObjectPool< _2NearEdges > _nearEdgesPool;
1230 static _Factory* & me()
1232 static _Factory* theFactory = 0;
1237 _Factory() { me() = this; }
1238 ~_Factory() { me() = 0; }
1240 static _LayerEdge* NewLayerEdge() { return me()->_edgePool.getNew(); }
1241 static _Curvature * NewCurvature() { return me()->_curvaturePool.getNew(); }
1242 static _2NearEdges* NewNearEdges() { return me()->_nearEdgesPool.getNew(); }
1245 } // namespace VISCOUS_3D
1249 //================================================================================
1250 // StdMeshers_ViscousLayers hypothesis
1252 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, SMESH_Gen* gen)
1253 :SMESH_Hypothesis(hypId, gen),
1254 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1255 _method( SURF_OFFSET_SMOOTH ),
1258 _name = StdMeshers_ViscousLayers::GetHypType();
1259 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1260 } // --------------------------------------------------------------------------------
1261 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1263 if ( faceIds != _shapeIds )
1264 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1265 if ( _isToIgnoreShapes != toIgnore )
1266 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1267 } // --------------------------------------------------------------------------------
1268 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1270 if ( thickness != _thickness )
1271 _thickness = thickness, NotifySubMeshesHypothesisModification();
1272 } // --------------------------------------------------------------------------------
1273 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1275 if ( _nbLayers != nb )
1276 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1277 } // --------------------------------------------------------------------------------
1278 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1280 if ( _stretchFactor != factor )
1281 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1282 } // --------------------------------------------------------------------------------
1283 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1285 if ( _method != method )
1286 _method = method, NotifySubMeshesHypothesisModification();
1287 } // --------------------------------------------------------------------------------
1288 void StdMeshers_ViscousLayers::SetGroupName(const std::string& name)
1290 if ( _groupName != name )
1293 if ( !_groupName.empty() )
1294 NotifySubMeshesHypothesisModification();
1296 } // --------------------------------------------------------------------------------
1297 SMESH_ProxyMesh::Ptr
1298 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1299 const TopoDS_Shape& theShape,
1300 const bool toMakeN2NMap) const
1302 using namespace VISCOUS_3D;
1303 _ViscousBuilder builder;
1304 SMESH_ComputeErrorPtr err = builder.Compute( theMesh, theShape );
1305 if ( err && !err->IsOK() )
1306 return SMESH_ProxyMesh::Ptr();
1308 vector<SMESH_ProxyMesh::Ptr> components;
1309 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1310 for ( ; exp.More(); exp.Next() )
1312 if ( _MeshOfSolid* pm =
1313 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1315 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1316 if ( !builder.MakeN2NMap( pm ))
1317 return SMESH_ProxyMesh::Ptr();
1318 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1319 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1321 if ( pm->_warning && !pm->_warning->IsOK() )
1323 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1324 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1325 if ( !smError || smError->IsOK() )
1326 smError = pm->_warning;
1329 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1331 switch ( components.size() )
1335 case 1: return components[0];
1337 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1339 return SMESH_ProxyMesh::Ptr();
1340 } // --------------------------------------------------------------------------------
1341 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1343 save << " " << _nbLayers
1344 << " " << _thickness
1345 << " " << _stretchFactor
1346 << " " << _shapeIds.size();
1347 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1348 save << " " << _shapeIds[i];
1349 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1350 save << " " << _method;
1351 save << " " << _groupName.size();
1352 if ( !_groupName.empty() )
1353 save << " " << _groupName;
1355 } // --------------------------------------------------------------------------------
1356 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1358 int nbFaces, faceID, shapeToTreat, method;
1359 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1360 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1361 _shapeIds.push_back( faceID );
1362 if ( load >> shapeToTreat ) {
1363 _isToIgnoreShapes = !shapeToTreat;
1364 if ( load >> method )
1365 _method = (ExtrusionMethod) method;
1367 if ( load >> nameSize && nameSize > 0 )
1369 _groupName.resize( nameSize );
1370 load.get( _groupName[0] ); // remove a white-space
1371 load.getline( &_groupName[0], nameSize + 1 );
1375 _isToIgnoreShapes = true; // old behavior
1378 } // --------------------------------------------------------------------------------
1379 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* theMesh,
1380 const TopoDS_Shape& theShape)
1384 } // --------------------------------------------------------------------------------
1385 SMESH_ComputeErrorPtr
1386 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1387 const TopoDS_Shape& theShape,
1388 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1390 VISCOUS_3D::_ViscousBuilder builder;
1391 SMESH_ComputeErrorPtr err = builder.CheckHypotheses( theMesh, theShape );
1392 if ( err && !err->IsOK() )
1393 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1395 theStatus = SMESH_Hypothesis::HYP_OK;
1399 // --------------------------------------------------------------------------------
1400 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1403 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1404 return IsToIgnoreShapes() ? !isIn : isIn;
1407 // --------------------------------------------------------------------------------
1408 SMDS_MeshGroup* StdMeshers_ViscousLayers::CreateGroup( const std::string& theName,
1409 SMESH_Mesh& theMesh,
1410 SMDSAbs_ElementType theType)
1412 SMESH_Group* group = 0;
1413 SMDS_MeshGroup* groupDS = 0;
1415 if ( theName.empty() )
1418 if ( SMESH_Mesh::GroupIteratorPtr grIt = theMesh.GetGroups() )
1419 while( grIt->more() && !group )
1421 group = grIt->next();
1423 group->GetGroupDS()->GetType() != theType ||
1424 group->GetName() != theName ||
1425 !dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() ))
1429 group = theMesh.AddGroup( theType, theName.c_str() );
1431 groupDS = & dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() )->SMDSGroup();
1436 // END StdMeshers_ViscousLayers hypothesis
1437 //================================================================================
1439 namespace VISCOUS_3D
1441 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV )
1445 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1446 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1447 gp_Pnt p = BRep_Tool::Pnt( fromV );
1448 double distF = p.SquareDistance( c->Value( f ));
1449 double distL = p.SquareDistance( c->Value( l ));
1450 c->D1(( distF < distL ? f : l), p, dir );
1451 if ( distL < distF ) dir.Reverse();
1454 //--------------------------------------------------------------------------------
1455 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1456 SMESH_MesherHelper& helper)
1459 double f,l; gp_Pnt p;
1460 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1461 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1462 double u = helper.GetNodeU( E, atNode );
1466 //--------------------------------------------------------------------------------
1467 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1468 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok,
1470 //--------------------------------------------------------------------------------
1471 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1472 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1475 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1478 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1479 return getFaceDir( F, v, node, helper, ok );
1481 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1482 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1483 gp_Pnt p; gp_Vec du, dv, norm;
1484 surface->D1( uv.X(),uv.Y(), p, du,dv );
1487 double u = helper.GetNodeU( fromE, node, 0, &ok );
1489 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1490 if ( o == TopAbs_REVERSED )
1493 gp_Vec dir = norm ^ du;
1495 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1496 helper.IsClosedEdge( fromE ))
1498 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1499 else c->D1( f, p, dv );
1500 if ( o == TopAbs_REVERSED )
1502 gp_Vec dir2 = norm ^ dv;
1503 dir = dir.Normalized() + dir2.Normalized();
1507 //--------------------------------------------------------------------------------
1508 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1509 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1510 bool& ok, double* cosin)
1512 TopoDS_Face faceFrw = F;
1513 faceFrw.Orientation( TopAbs_FORWARD );
1514 //double f,l; TopLoc_Location loc;
1515 TopoDS_Edge edges[2]; // sharing a vertex
1518 TopoDS_Vertex VV[2];
1519 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1520 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1522 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1523 if ( SMESH_Algo::isDegenerated( e )) continue;
1524 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1525 if ( VV[1].IsSame( fromV )) {
1526 nbEdges += edges[ 0 ].IsNull();
1529 else if ( VV[0].IsSame( fromV )) {
1530 nbEdges += edges[ 1 ].IsNull();
1535 gp_XYZ dir(0,0,0), edgeDir[2];
1538 // get dirs of edges going fromV
1540 for ( size_t i = 0; i < nbEdges && ok; ++i )
1542 edgeDir[i] = getEdgeDir( edges[i], fromV );
1543 double size2 = edgeDir[i].SquareModulus();
1544 if (( ok = size2 > numeric_limits<double>::min() ))
1545 edgeDir[i] /= sqrt( size2 );
1547 if ( !ok ) return dir;
1549 // get angle between the 2 edges
1551 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1552 if ( Abs( angle ) < 5 * M_PI/180 )
1554 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1558 dir = edgeDir[0] + edgeDir[1];
1563 double angle = gp_Vec( edgeDir[0] ).Angle( dir );
1564 *cosin = Cos( angle );
1567 else if ( nbEdges == 1 )
1569 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1570 if ( cosin ) *cosin = 1.;
1580 //================================================================================
1582 * \brief Finds concave VERTEXes of a FACE
1584 //================================================================================
1586 bool getConcaveVertices( const TopoDS_Face& F,
1587 SMESH_MesherHelper& helper,
1588 set< TGeomID >* vertices = 0)
1590 // check angles at VERTEXes
1592 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1593 for ( size_t iW = 0; iW < wires.size(); ++iW )
1595 const int nbEdges = wires[iW]->NbEdges();
1596 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1598 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1600 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1601 int iE2 = ( iE1 + 1 ) % nbEdges;
1602 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1603 iE2 = ( iE2 + 1 ) % nbEdges;
1604 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1605 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1606 wires[iW]->Edge( iE2 ), F, V );
1607 if ( angle < -5. * M_PI / 180. )
1611 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1615 return vertices ? !vertices->empty() : false;
1618 //================================================================================
1620 * \brief Returns true if a FACE is bound by a concave EDGE
1622 //================================================================================
1624 bool isConcave( const TopoDS_Face& F,
1625 SMESH_MesherHelper& helper,
1626 set< TGeomID >* vertices = 0 )
1628 bool isConcv = false;
1629 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1631 gp_Vec2d drv1, drv2;
1633 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1634 for ( ; eExp.More(); eExp.Next() )
1636 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1637 if ( SMESH_Algo::isDegenerated( E )) continue;
1638 // check if 2D curve is concave
1639 BRepAdaptor_Curve2d curve( E, F );
1640 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1641 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1642 curve.Intervals( intervals, GeomAbs_C2 );
1643 bool isConvex = true;
1644 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1646 double u1 = intervals( i );
1647 double u2 = intervals( i+1 );
1648 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1649 double cross = drv1 ^ drv2;
1650 if ( E.Orientation() == TopAbs_REVERSED )
1652 isConvex = ( cross > -1e-9 ); // 0.1 );
1656 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1665 // check angles at VERTEXes
1666 if ( getConcaveVertices( F, helper, vertices ))
1672 //================================================================================
1674 * \brief Computes minimal distance of face in-FACE nodes from an EDGE
1675 * \param [in] face - the mesh face to treat
1676 * \param [in] nodeOnEdge - a node on the EDGE
1677 * \param [out] faceSize - the computed distance
1678 * \return bool - true if faceSize computed
1680 //================================================================================
1682 bool getDistFromEdge( const SMDS_MeshElement* face,
1683 const SMDS_MeshNode* nodeOnEdge,
1686 faceSize = Precision::Infinite();
1689 int nbN = face->NbCornerNodes();
1690 int iOnE = face->GetNodeIndex( nodeOnEdge );
1691 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1692 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1693 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1694 face->GetNode( iNext[1] ) };
1695 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1696 double segLen = -1.;
1697 // look for two neighbor not in-FACE nodes of face
1698 for ( int i = 0; i < 2; ++i )
1700 if (( nNext[i]->GetPosition()->GetDim() != 2 ) &&
1701 ( nodeOnEdge->GetPosition()->GetDim() == 0 || nNext[i]->GetID() < nodeOnEdge->GetID() ))
1703 // look for an in-FACE node
1704 for ( int iN = 0; iN < nbN; ++iN )
1706 if ( iN == iOnE || iN == iNext[i] )
1708 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1709 gp_XYZ v = pInFace - segEnd;
1712 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1713 segLen = segVec.Modulus();
1715 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1716 faceSize = Min( faceSize, distToSeg );
1724 //================================================================================
1726 * \brief Return direction of axis or revolution of a surface
1728 //================================================================================
1730 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1733 switch ( surface.GetType() ) {
1736 gp_Cone cone = surface.Cone();
1737 axis = cone.Axis().Direction();
1740 case GeomAbs_Sphere:
1742 gp_Sphere sphere = surface.Sphere();
1743 axis = sphere.Position().Direction();
1746 case GeomAbs_SurfaceOfRevolution:
1748 axis = surface.AxeOfRevolution().Direction();
1751 //case GeomAbs_SurfaceOfExtrusion:
1752 case GeomAbs_OffsetSurface:
1754 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1755 return getRovolutionAxis( base->Surface(), axis );
1757 default: return false;
1762 //--------------------------------------------------------------------------------
1763 // DEBUG. Dump intermediate node positions into a python script
1764 // HOWTO use: run python commands written in a console to see
1765 // construction steps of viscous layers
1771 PyDump(SMESH_Mesh& m) {
1772 int tag = 3 + m.GetId();
1773 const char* fname = "/tmp/viscous.py";
1774 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
1775 py = _pyStream = new ofstream(fname);
1776 *py << "import SMESH" << endl
1777 << "from salome.smesh import smeshBuilder" << endl
1778 << "smesh = smeshBuilder.New()" << endl
1779 << "meshSO = salome.myStudy.FindObjectID('0:1:2:" << tag <<"')" << endl
1780 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1785 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1786 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1787 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1788 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1792 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1793 struct MyStream : public ostream
1795 template <class T> ostream & operator<<( const T &anything ) { return *this ; }
1797 void Pause() { py = &_mystream; }
1798 void Resume() { py = _pyStream; }
1802 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1803 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1804 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1805 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1806 void _dumpFunction(const string& fun, int ln)
1807 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1808 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1809 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1810 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1811 void _dumpCmd(const string& txt, int ln)
1812 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1813 void dumpFunctionEnd()
1814 { if (py) *py<< " return"<< endl; }
1815 void dumpChangeNodes( const SMDS_MeshElement* f )
1816 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1817 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1818 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1819 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1823 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} void Pause() {} void Resume() {} };
1824 #define dumpFunction(f) f
1826 #define dumpMoveComm(n,txt)
1827 #define dumpCmd(txt)
1828 #define dumpFunctionEnd()
1829 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1830 #define debugMsg( txt ) {}
1835 using namespace VISCOUS_3D;
1837 //================================================================================
1839 * \brief Constructor of _ViscousBuilder
1841 //================================================================================
1843 _ViscousBuilder::_ViscousBuilder()
1845 _error = SMESH_ComputeError::New(COMPERR_OK);
1849 //================================================================================
1851 * \brief Stores error description and returns false
1853 //================================================================================
1855 bool _ViscousBuilder::error(const string& text, int solidId )
1857 const string prefix = string("Viscous layers builder: ");
1858 _error->myName = COMPERR_ALGO_FAILED;
1859 _error->myComment = prefix + text;
1862 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1863 if ( !sm && !_sdVec.empty() )
1864 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1865 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1867 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1868 if ( smError && smError->myAlgo )
1869 _error->myAlgo = smError->myAlgo;
1871 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1873 // set KO to all solids
1874 for ( size_t i = 0; i < _sdVec.size(); ++i )
1876 if ( _sdVec[i]._index == solidId )
1878 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1879 if ( !sm->IsEmpty() )
1881 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1882 if ( !smError || smError->IsOK() )
1884 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1885 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1889 makeGroupOfLE(); // debug
1894 //================================================================================
1896 * \brief At study restoration, restore event listeners used to clear an inferior
1897 * dim sub-mesh modified by viscous layers
1899 //================================================================================
1901 void _ViscousBuilder::RestoreListeners()
1906 //================================================================================
1908 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1910 //================================================================================
1912 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1914 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1915 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1916 for ( ; fExp.More(); fExp.Next() )
1918 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1919 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
1921 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
1923 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
1926 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
1927 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
1929 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
1930 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
1931 while( prxIt->more() )
1933 const SMDS_MeshElement* fSrc = srcIt->next();
1934 const SMDS_MeshElement* fPrx = prxIt->next();
1935 if ( fSrc->NbNodes() != fPrx->NbNodes())
1936 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
1937 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
1938 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
1941 pm->_n2nMapComputed = true;
1945 //================================================================================
1947 * \brief Does its job
1949 //================================================================================
1951 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
1952 const TopoDS_Shape& theShape)
1958 // check if proxy mesh already computed
1959 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1961 return error("No SOLID's in theShape"), _error;
1963 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
1964 return SMESH_ComputeErrorPtr(); // everything already computed
1966 PyDump debugDump( theMesh );
1967 _pyDump = &debugDump;
1969 // TODO: ignore already computed SOLIDs
1970 if ( !findSolidsWithLayers())
1973 if ( !findFacesWithLayers() )
1976 // for ( size_t i = 0; i < _sdVec.size(); ++i )
1978 // if ( ! makeLayer( _sdVec[ i ])) // create _LayerEdge's
1984 findPeriodicFaces();
1986 for ( size_t i = 0; i < _sdVec.size(); ++i )
1989 for ( iSD = 0; iSD < _sdVec.size(); ++iSD ) // find next SOLID to compute
1990 if ( _sdVec[iSD]._before.IsEmpty() &&
1991 !_sdVec[iSD]._solid.IsNull() &&
1992 !_sdVec[iSD]._done )
1995 if ( ! makeLayer(_sdVec[iSD]) ) // create _LayerEdge's
1998 if ( _sdVec[iSD]._n2eMap.size() == 0 ) // no layers in a SOLID
2000 _sdVec[iSD]._solid.Nullify();
2004 if ( ! inflate(_sdVec[iSD]) ) // increase length of _LayerEdge's
2007 if ( ! refine(_sdVec[iSD]) ) // create nodes and prisms
2010 if ( ! shrink(_sdVec[iSD]) ) // shrink 2D mesh on FACEs w/o layer
2013 addBoundaryElements(_sdVec[iSD]); // create quadrangles on prism bare sides
2015 _sdVec[iSD]._done = true;
2017 const TopoDS_Shape& solid = _sdVec[iSD]._solid;
2018 for ( iSD = 0; iSD < _sdVec.size(); ++iSD )
2019 _sdVec[iSD]._before.Remove( solid );
2022 makeGroupOfLE(); // debug
2028 //================================================================================
2030 * \brief Check validity of hypotheses
2032 //================================================================================
2034 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
2035 const TopoDS_Shape& shape )
2039 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
2040 return SMESH_ComputeErrorPtr(); // everything already computed
2043 findSolidsWithLayers();
2044 bool ok = findFacesWithLayers( true );
2046 // remove _MeshOfSolid's of _SolidData's
2047 for ( size_t i = 0; i < _sdVec.size(); ++i )
2048 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
2053 return SMESH_ComputeErrorPtr();
2056 //================================================================================
2058 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
2060 //================================================================================
2062 bool _ViscousBuilder::findSolidsWithLayers()
2065 TopTools_IndexedMapOfShape allSolids;
2066 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
2067 _sdVec.reserve( allSolids.Extent());
2069 SMESH_HypoFilter filter;
2070 for ( int i = 1; i <= allSolids.Extent(); ++i )
2072 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
2073 SMESH_subMesh* sm = _mesh->GetSubMesh( allSolids(i) );
2074 if ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbElements() > 0 )
2075 continue; // solid is already meshed
2076 SMESH_Algo* algo = sm->GetAlgo();
2077 if ( !algo ) continue;
2078 // TODO: check if algo is hidden
2079 const list <const SMESHDS_Hypothesis *> & allHyps =
2080 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
2081 _SolidData* soData = 0;
2082 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
2083 const StdMeshers_ViscousLayers* viscHyp = 0;
2084 for ( ; hyp != allHyps.end(); ++hyp )
2085 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
2087 TopoDS_Shape hypShape;
2088 filter.Init( filter.Is( viscHyp ));
2089 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
2093 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
2096 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
2097 soData = & _sdVec.back();
2098 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
2099 soData->_helper = new SMESH_MesherHelper( *_mesh );
2100 soData->_helper->SetSubShape( allSolids(i) );
2101 _solids.Add( allSolids(i) );
2103 soData->_hyps.push_back( viscHyp );
2104 soData->_hypShapes.push_back( hypShape );
2107 if ( _sdVec.empty() )
2109 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
2114 //================================================================================
2116 * \brief Set a _SolidData to be computed before another
2118 //================================================================================
2120 bool _ViscousBuilder::setBefore( _SolidData& solidBefore, _SolidData& solidAfter )
2122 // check possibility to set this order; get all solids before solidBefore
2123 TopTools_IndexedMapOfShape allSolidsBefore;
2124 allSolidsBefore.Add( solidBefore._solid );
2125 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2127 int iSD = _solids.FindIndex( allSolidsBefore(i) );
2130 TopTools_MapIteratorOfMapOfShape soIt( _sdVec[ iSD-1 ]._before );
2131 for ( ; soIt.More(); soIt.Next() )
2132 allSolidsBefore.Add( soIt.Value() );
2135 if ( allSolidsBefore.Contains( solidAfter._solid ))
2138 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2139 solidAfter._before.Add( allSolidsBefore(i) );
2144 //================================================================================
2148 //================================================================================
2150 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
2152 SMESH_MesherHelper helper( *_mesh );
2153 TopExp_Explorer exp;
2155 // collect all faces-to-ignore defined by hyp
2156 for ( size_t i = 0; i < _sdVec.size(); ++i )
2158 // get faces-to-ignore defined by each hyp
2159 typedef const StdMeshers_ViscousLayers* THyp;
2160 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
2161 list< TFacesOfHyp > ignoreFacesOfHyps;
2162 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
2163 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
2164 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
2166 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
2167 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
2170 // fill _SolidData::_face2hyp and check compatibility of hypotheses
2171 const int nbHyps = _sdVec[i]._hyps.size();
2174 // check if two hypotheses define different parameters for the same FACE
2175 list< TFacesOfHyp >::iterator igFacesOfHyp;
2176 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2178 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
2180 igFacesOfHyp = ignoreFacesOfHyps.begin();
2181 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2182 if ( ! igFacesOfHyp->first.count( faceID ))
2185 return error(SMESH_Comment("Several hypotheses define "
2186 "Viscous Layers on the face #") << faceID );
2187 hyp = igFacesOfHyp->second;
2190 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2192 _sdVec[i]._ignoreFaceIds.insert( faceID );
2195 // check if two hypotheses define different number of viscous layers for
2196 // adjacent faces of a solid
2197 set< int > nbLayersSet;
2198 igFacesOfHyp = ignoreFacesOfHyps.begin();
2199 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2201 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2203 if ( nbLayersSet.size() > 1 )
2205 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2207 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2208 THyp hyp1 = 0, hyp2 = 0;
2209 while( const TopoDS_Shape* face = fIt->next() )
2211 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2212 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2213 if ( f2h != _sdVec[i]._face2hyp.end() )
2215 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2218 if ( hyp1 && hyp2 &&
2219 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2221 return error("Two hypotheses define different number of "
2222 "viscous layers on adjacent faces");
2226 } // if ( nbHyps > 1 )
2229 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2233 if ( onlyWith ) // is called to check hypotheses compatibility only
2236 // fill _SolidData::_reversedFaceIds
2237 for ( size_t i = 0; i < _sdVec.size(); ++i )
2239 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2240 for ( ; exp.More(); exp.Next() )
2242 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2243 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2244 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2245 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2246 helper.IsReversedSubMesh( face ))
2248 _sdVec[i]._reversedFaceIds.insert( faceID );
2253 // Find FACEs to shrink mesh on (solution 2 in issue 0020832): fill in _shrinkShape2Shape
2254 TopTools_IndexedMapOfShape shapes;
2255 std::string structAlgoName = "Hexa_3D";
2256 for ( size_t i = 0; i < _sdVec.size(); ++i )
2259 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2260 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2262 const TopoDS_Shape& edge = shapes(iE);
2263 // find 2 FACEs sharing an EDGE
2265 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE, &_sdVec[i]._solid);
2266 while ( fIt->more())
2268 const TopoDS_Shape* f = fIt->next();
2269 FF[ int( !FF[0].IsNull()) ] = *f;
2271 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2273 // check presence of layers on them
2275 for ( int j = 0; j < 2; ++j )
2276 ignore[j] = _sdVec[i]._ignoreFaceIds.count( getMeshDS()->ShapeToIndex( FF[j] ));
2277 if ( ignore[0] == ignore[1] )
2278 continue; // nothing interesting
2279 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ]; // FACE w/o layers
2282 if ( !fWOL.IsNull())
2284 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2285 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2290 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2292 for ( size_t i = 0; i < _sdVec.size(); ++i )
2295 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2296 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2298 const TopoDS_Shape& vertex = shapes(iV);
2299 // find faces WOL sharing the vertex
2300 vector< TopoDS_Shape > facesWOL;
2301 size_t totalNbFaces = 0;
2302 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE, &_sdVec[i]._solid );
2303 while ( fIt->more())
2305 const TopoDS_Shape* f = fIt->next();
2307 const int fID = getMeshDS()->ShapeToIndex( *f );
2308 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&& !_sdVec[i]._noShrinkShapes.count( fID )*/)
2309 facesWOL.push_back( *f );
2311 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2312 continue; // no layers at this vertex or no WOL
2313 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2314 switch ( facesWOL.size() )
2318 helper.SetSubShape( facesWOL[0] );
2319 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2321 TopoDS_Shape seamEdge;
2322 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2323 while ( eIt->more() && seamEdge.IsNull() )
2325 const TopoDS_Shape* e = eIt->next();
2326 if ( helper.IsRealSeam( *e ) )
2329 if ( !seamEdge.IsNull() )
2331 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2335 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2340 // find an edge shared by 2 faces
2341 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2342 while ( eIt->more())
2344 const TopoDS_Shape* e = eIt->next();
2345 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2346 helper.IsSubShape( *e, facesWOL[1]))
2348 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2354 return error("Not yet supported case", _sdVec[i]._index);
2359 // Add to _noShrinkShapes sub-shapes of FACE's that can't be shrunk since
2360 // the algo of the SOLID sharing the FACE does not support it or for other reasons
2361 set< string > notSupportAlgos; notSupportAlgos.insert( structAlgoName );
2362 for ( size_t i = 0; i < _sdVec.size(); ++i )
2364 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2365 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2367 const TopoDS_Shape& fWOL = e2f->second;
2368 const TGeomID edgeID = e2f->first;
2369 TGeomID faceID = getMeshDS()->ShapeToIndex( fWOL );
2370 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2371 if ( edge.ShapeType() != TopAbs_EDGE )
2372 continue; // shrink shape is VERTEX
2375 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2376 while ( soIt->more() && solid.IsNull() )
2378 const TopoDS_Shape* so = soIt->next();
2379 if ( !so->IsSame( _sdVec[i]._solid ))
2382 if ( solid.IsNull() )
2385 bool noShrinkE = false;
2386 SMESH_Algo* algo = _mesh->GetSubMesh( solid )->GetAlgo();
2387 bool isStructured = ( algo && algo->GetName() == structAlgoName );
2388 size_t iSolid = _solids.FindIndex( solid ) - 1;
2389 if ( iSolid < _sdVec.size() && _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2391 // the adjacent SOLID has NO layers on fWOL;
2392 // shrink allowed if
2393 // - there are layers on the EDGE in the adjacent SOLID
2394 // - there are NO layers in the adjacent SOLID && algo is unstructured and computed later
2395 bool hasWLAdj = (_sdVec[iSolid]._shrinkShape2Shape.count( edgeID ));
2396 bool shrinkAllowed = (( hasWLAdj ) ||
2397 ( !isStructured && setBefore( _sdVec[ i ], _sdVec[ iSolid ] )));
2398 noShrinkE = !shrinkAllowed;
2400 else if ( iSolid < _sdVec.size() )
2402 // the adjacent SOLID has layers on fWOL;
2403 // check if SOLID's mesh is unstructured and then try to set it
2404 // to be computed after the i-th solid
2405 if ( isStructured || !setBefore( _sdVec[ i ], _sdVec[ iSolid ] ))
2406 noShrinkE = true; // don't shrink fWOL
2410 // the adjacent SOLID has NO layers at all
2411 noShrinkE = isStructured;
2416 _sdVec[i]._noShrinkShapes.insert( edgeID );
2418 // check if there is a collision with to-shrink-from EDGEs in iSolid
2419 // if ( iSolid < _sdVec.size() )
2422 // TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2423 // for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2425 // const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2426 // const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2427 // if ( eID == edgeID ||
2428 // !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2429 // _sdVec[i]._noShrinkShapes.count( eID ))
2431 // for ( int is1st = 0; is1st < 2; ++is1st )
2433 // TopoDS_Vertex V = helper.IthVertex( is1st, E );
2434 // if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2436 // return error("No way to make a conformal mesh with "
2437 // "the given set of faces with layers", _sdVec[i]._index);
2444 // add VERTEXes of the edge in _noShrinkShapes, which is necessary if
2445 // _shrinkShape2Shape is different in the adjacent SOLID
2446 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2448 TGeomID vID = getMeshDS()->ShapeToIndex( vIt.Value() );
2449 bool noShrinkV = false, noShrinkIfAdjMeshed = false;
2451 if ( iSolid < _sdVec.size() )
2453 if ( _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2455 map< TGeomID, TopoDS_Shape >::iterator i2S, i2SAdj;
2456 i2S = _sdVec[i ]._shrinkShape2Shape.find( vID );
2457 i2SAdj = _sdVec[iSolid]._shrinkShape2Shape.find( vID );
2458 if ( i2SAdj == _sdVec[iSolid]._shrinkShape2Shape.end() )
2459 noShrinkV = (( isStructured ) ||
2460 ( noShrinkIfAdjMeshed = i2S->second.ShapeType() == TopAbs_EDGE ));
2462 noShrinkV = ( ! i2S->second.IsSame( i2SAdj->second ));
2466 noShrinkV = noShrinkE;
2471 // the adjacent SOLID has NO layers at all
2478 noShrinkV = noShrinkIfAdjMeshed =
2479 ( _sdVec[i]._shrinkShape2Shape[ vID ].ShapeType() == TopAbs_EDGE );
2483 if ( noShrinkV && noShrinkIfAdjMeshed )
2485 // noShrinkV if FACEs in the adjacent SOLID are meshed
2486 PShapeIteratorPtr fIt = helper.GetAncestors( _sdVec[i]._shrinkShape2Shape[ vID ],
2487 *_mesh, TopAbs_FACE, &solid );
2488 while ( fIt->more() )
2490 const TopoDS_Shape* f = fIt->next();
2491 if ( !f->IsSame( fWOL ))
2493 noShrinkV = ! _mesh->GetSubMesh( *f )->IsEmpty();
2499 _sdVec[i]._noShrinkShapes.insert( vID );
2502 } // loop on _sdVec[i]._shrinkShape2Shape
2503 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2506 // add FACEs of other SOLIDs to _ignoreFaceIds
2507 for ( size_t i = 0; i < _sdVec.size(); ++i )
2510 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2512 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2514 if ( !shapes.Contains( exp.Current() ))
2515 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2522 //================================================================================
2524 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2526 //================================================================================
2528 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2529 const StdMeshers_ViscousLayers* hyp,
2530 const TopoDS_Shape& hypShape,
2531 set<TGeomID>& ignoreFaceIds)
2533 TopExp_Explorer exp;
2535 vector<TGeomID> ids = hyp->GetBndShapes();
2536 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2538 for ( size_t ii = 0; ii < ids.size(); ++ii )
2540 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2541 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2542 ignoreFaceIds.insert( ids[ii] );
2545 else // FACEs with layers are given
2547 exp.Init( solid, TopAbs_FACE );
2548 for ( ; exp.More(); exp.Next() )
2550 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2551 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2552 ignoreFaceIds.insert( faceInd );
2556 // ignore internal FACEs if inlets and outlets are specified
2557 if ( hyp->IsToIgnoreShapes() )
2559 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2560 TopExp::MapShapesAndAncestors( hypShape,
2561 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2563 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2565 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2566 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2569 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2571 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2576 //================================================================================
2578 * \brief Create the inner surface of the viscous layer and prepare data for infation
2580 //================================================================================
2582 bool _ViscousBuilder::makeLayer(_SolidData& data)
2584 // make a map to find new nodes on sub-shapes shared with other SOLID
2585 map< TGeomID, TNode2Edge* >::iterator s2ne;
2586 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2587 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2589 TGeomID shapeInd = s2s->first;
2590 for ( size_t i = 0; i < _sdVec.size(); ++i )
2592 if ( _sdVec[i]._index == data._index ) continue;
2593 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2594 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2595 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2597 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2603 // Create temporary faces and _LayerEdge's
2605 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2607 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2609 data._stepSize = Precision::Infinite();
2610 data._stepSizeNodes[0] = 0;
2612 SMESH_MesherHelper helper( *_mesh );
2613 helper.SetSubShape( data._solid );
2614 helper.SetElementsOnShape( true );
2616 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2617 TNode2Edge::iterator n2e2;
2619 // make _LayerEdge's
2620 for ( TopExp_Explorer exp( data._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2622 const TopoDS_Face& F = TopoDS::Face( exp.Current() );
2623 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2624 const TGeomID id = sm->GetId();
2625 if ( edgesByGeom[ id ]._shape.IsNull() )
2626 continue; // no layers
2627 SMESH_ProxyMesh::SubMesh* proxySub =
2628 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2630 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2631 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << id, data._index );
2633 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2634 while ( eIt->more() )
2636 const SMDS_MeshElement* face = eIt->next();
2637 double faceMaxCosin = -1;
2638 _LayerEdge* maxCosinEdge = 0;
2639 int nbDegenNodes = 0;
2641 newNodes.resize( face->NbCornerNodes() );
2642 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2644 const SMDS_MeshNode* n = face->GetNode( i );
2645 const int shapeID = n->getshapeId();
2646 const bool onDegenShap = helper.IsDegenShape( shapeID );
2647 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2652 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2653 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2654 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2655 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2665 TNode2Edge::iterator n2e = data._n2eMap.insert( make_pair( n, (_LayerEdge*)0 )).first;
2666 if ( !(*n2e).second )
2669 _LayerEdge* edge = _Factory::NewLayerEdge();
2670 edge->_nodes.push_back( n );
2672 edgesByGeom[ shapeID ]._edges.push_back( edge );
2673 const bool noShrink = data._noShrinkShapes.count( shapeID );
2675 SMESH_TNodeXYZ xyz( n );
2677 // set edge data or find already refined _LayerEdge and get data from it
2678 if (( !noShrink ) &&
2679 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2680 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2681 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2683 _LayerEdge* foundEdge = (*n2e2).second;
2684 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2685 foundEdge->_pos.push_back( lastPos );
2686 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2687 const_cast< SMDS_MeshNode* >
2688 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2694 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2696 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2699 if ( edge->_nodes.size() < 2 )
2700 edge->Block( data );
2701 //data._noShrinkShapes.insert( shapeID );
2703 dumpMove(edge->_nodes.back());
2705 if ( edge->_cosin > faceMaxCosin )
2707 faceMaxCosin = edge->_cosin;
2708 maxCosinEdge = edge;
2711 newNodes[ i ] = n2e->second->_nodes.back();
2714 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2716 if ( newNodes.size() - nbDegenNodes < 2 )
2719 // create a temporary face
2720 const SMDS_MeshElement* newFace =
2721 new _TmpMeshFace( newNodes, --_tmpFaceID, face->GetShapeID(), face );
2722 proxySub->AddElement( newFace );
2724 // compute inflation step size by min size of element on a convex surface
2725 if ( faceMaxCosin > theMinSmoothCosin )
2726 limitStepSize( data, face, maxCosinEdge );
2728 } // loop on 2D elements on a FACE
2729 } // loop on FACEs of a SOLID to create _LayerEdge's
2732 // Set _LayerEdge::_neibors
2733 TNode2Edge::iterator n2e;
2734 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2736 _EdgesOnShape& eos = data._edgesOnShape[iS];
2737 for ( size_t i = 0; i < eos._edges.size(); ++i )
2739 _LayerEdge* edge = eos._edges[i];
2740 TIDSortedNodeSet nearNodes;
2741 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2742 while ( fIt->more() )
2744 const SMDS_MeshElement* f = fIt->next();
2745 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2746 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2748 nearNodes.erase( edge->_nodes[0] );
2749 edge->_neibors.reserve( nearNodes.size() );
2750 TIDSortedNodeSet::iterator node = nearNodes.begin();
2751 for ( ; node != nearNodes.end(); ++node )
2752 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2753 edge->_neibors.push_back( n2e->second );
2757 data._epsilon = 1e-7;
2758 if ( data._stepSize < 1. )
2759 data._epsilon *= data._stepSize;
2761 if ( !findShapesToSmooth( data )) // _LayerEdge::_maxLen is computed here
2764 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2765 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2767 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2768 const SMDS_MeshNode* nn[2];
2769 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2771 _EdgesOnShape& eos = data._edgesOnShape[iS];
2772 for ( size_t i = 0; i < eos._edges.size(); ++i )
2774 _LayerEdge* edge = eos._edges[i];
2775 if ( edge->IsOnEdge() )
2777 // get neighbor nodes
2778 bool hasData = ( edge->_2neibors->_edges[0] );
2779 if ( hasData ) // _LayerEdge is a copy of another one
2781 nn[0] = edge->_2neibors->srcNode(0);
2782 nn[1] = edge->_2neibors->srcNode(1);
2784 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2788 // set neighbor _LayerEdge's
2789 for ( int j = 0; j < 2; ++j )
2791 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2792 return error("_LayerEdge not found by src node", data._index);
2793 edge->_2neibors->_edges[j] = n2e->second;
2796 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2799 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2801 _Simplex& s = edge->_simplices[j];
2802 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2803 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2806 // For an _LayerEdge on a degenerated EDGE, copy some data from
2807 // a corresponding _LayerEdge on a VERTEX
2808 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2809 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2811 // Generally we should not get here
2812 if ( eos.ShapeType() != TopAbs_EDGE )
2814 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2815 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2816 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2818 const _LayerEdge* vEdge = n2e->second;
2819 edge->_normal = vEdge->_normal;
2820 edge->_lenFactor = vEdge->_lenFactor;
2821 edge->_cosin = vEdge->_cosin;
2824 } // loop on data._edgesOnShape._edges
2825 } // loop on data._edgesOnShape
2827 // fix _LayerEdge::_2neibors on EDGEs to smooth
2828 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2829 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2830 // if ( !e2c->second.IsNull() )
2832 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2833 // data.Sort2NeiborsOnEdge( eos->_edges );
2840 //================================================================================
2842 * \brief Compute inflation step size by min size of element on a convex surface
2844 //================================================================================
2846 void _ViscousBuilder::limitStepSize( _SolidData& data,
2847 const SMDS_MeshElement* face,
2848 const _LayerEdge* maxCosinEdge )
2851 double minSize = 10 * data._stepSize;
2852 const int nbNodes = face->NbCornerNodes();
2853 for ( int i = 0; i < nbNodes; ++i )
2855 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2856 const SMDS_MeshNode* curN = face->GetNode( i );
2857 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2858 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2860 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2861 if ( dist < minSize )
2862 minSize = dist, iN = i;
2865 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
2866 if ( newStep < data._stepSize )
2868 data._stepSize = newStep;
2869 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
2870 data._stepSizeNodes[0] = face->GetNode( iN );
2871 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
2875 //================================================================================
2877 * \brief Compute inflation step size by min size of element on a convex surface
2879 //================================================================================
2881 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
2883 if ( minSize < data._stepSize )
2885 data._stepSize = minSize;
2886 if ( data._stepSizeNodes[0] )
2889 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
2890 data._stepSizeCoeff = data._stepSize / dist;
2895 //================================================================================
2897 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
2899 //================================================================================
2901 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
2903 SMESH_MesherHelper helper( *_mesh );
2905 BRepLProp_SLProps surfProp( 2, 1e-6 );
2906 data._convexFaces.clear();
2908 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2910 _EdgesOnShape& eof = data._edgesOnShape[iS];
2911 if ( eof.ShapeType() != TopAbs_FACE ||
2912 data._ignoreFaceIds.count( eof._shapeID ))
2915 TopoDS_Face F = TopoDS::Face( eof._shape );
2916 const TGeomID faceID = eof._shapeID;
2918 BRepAdaptor_Surface surface( F, false );
2919 surfProp.SetSurface( surface );
2921 _ConvexFace cnvFace;
2923 cnvFace._normalsFixed = false;
2924 cnvFace._isTooCurved = false;
2926 double maxCurvature = cnvFace.GetMaxCurvature( data, eof, surfProp, helper );
2927 if ( maxCurvature > 0 )
2929 limitStepSize( data, 0.9 / maxCurvature );
2930 findEdgesToUpdateNormalNearConvexFace( cnvFace, data, helper );
2932 if ( !cnvFace._isTooCurved ) continue;
2934 _ConvexFace & convFace =
2935 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
2937 // skip a closed surface (data._convexFaces is useful anyway)
2938 bool isClosedF = false;
2939 helper.SetSubShape( F );
2940 if ( helper.HasRealSeam() )
2942 // in the closed surface there must be a closed EDGE
2943 for ( TopExp_Explorer eIt( F, TopAbs_EDGE ); eIt.More() && !isClosedF; eIt.Next() )
2944 isClosedF = helper.IsClosedEdge( TopoDS::Edge( eIt.Current() ));
2948 // limit _LayerEdge::_maxLen on the FACE
2949 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
2950 const double minCurvature =
2951 1. / ( eof._hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
2952 map< TGeomID, _EdgesOnShape* >::iterator id2eos = cnvFace._subIdToEOS.find( faceID );
2953 if ( id2eos != cnvFace._subIdToEOS.end() )
2955 _EdgesOnShape& eos = * id2eos->second;
2956 for ( size_t i = 0; i < eos._edges.size(); ++i )
2958 _LayerEdge* ledge = eos._edges[ i ];
2959 gp_XY uv = helper.GetNodeUV( F, ledge->_nodes[0] );
2960 surfProp.SetParameters( uv.X(), uv.Y() );
2961 if ( surfProp.IsCurvatureDefined() )
2963 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
2964 surfProp.MinCurvature() * oriFactor );
2965 if ( curvature > minCurvature )
2966 ledge->SetMaxLen( Min( ledge->_maxLen, 1. / curvature ));
2973 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
2974 // prism distortion.
2975 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
2976 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
2978 // there are _LayerEdge's on the FACE it-self;
2979 // select _LayerEdge's near EDGEs
2980 _EdgesOnShape& eos = * id2eos->second;
2981 for ( size_t i = 0; i < eos._edges.size(); ++i )
2983 _LayerEdge* ledge = eos._edges[ i ];
2984 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
2985 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
2987 // do not select _LayerEdge's neighboring sharp EDGEs
2988 bool sharpNbr = false;
2989 for ( size_t iN = 0; iN < ledge->_neibors.size() && !sharpNbr; ++iN )
2990 sharpNbr = ( ledge->_neibors[iN]->_cosin > theMinSmoothCosin );
2992 convFace._simplexTestEdges.push_back( ledge );
2999 // where there are no _LayerEdge's on a _ConvexFace,
3000 // as e.g. on a fillet surface with no internal nodes - issue 22580,
3001 // so that collision of viscous internal faces is not detected by check of
3002 // intersection of _LayerEdge's with the viscous internal faces.
3004 set< const SMDS_MeshNode* > usedNodes;
3006 // look for _LayerEdge's with null _sWOL
3007 id2eos = convFace._subIdToEOS.begin();
3008 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
3010 _EdgesOnShape& eos = * id2eos->second;
3011 if ( !eos._sWOL.IsNull() )
3013 for ( size_t i = 0; i < eos._edges.size(); ++i )
3015 _LayerEdge* ledge = eos._edges[ i ];
3016 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
3017 if ( !usedNodes.insert( srcNode ).second ) continue;
3019 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
3021 usedNodes.insert( ledge->_simplices[i]._nPrev );
3022 usedNodes.insert( ledge->_simplices[i]._nNext );
3024 convFace._simplexTestEdges.push_back( ledge );
3028 } // loop on FACEs of data._solid
3031 //================================================================================
3033 * \brief Detect shapes (and _LayerEdge's on them) to smooth
3035 //================================================================================
3037 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
3039 // define allowed thickness
3040 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
3043 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
3044 // boundary inclined to the shape at a sharp angle
3046 TopTools_MapOfShape edgesOfSmooFaces;
3047 SMESH_MesherHelper helper( *_mesh );
3050 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3051 data._nbShapesToSmooth = 0;
3053 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3055 _EdgesOnShape& eos = edgesByGeom[iS];
3056 eos._toSmooth = false;
3057 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
3060 double tgtThick = eos._hyp.GetTotalThickness();
3061 SMESH_subMeshIteratorPtr subIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false );
3062 while ( subIt->more() && !eos._toSmooth )
3064 TGeomID iSub = subIt->next()->GetId();
3065 const vector<_LayerEdge*>& eSub = edgesByGeom[ iSub ]._edges;
3066 if ( eSub.empty() ) continue;
3069 for ( size_t i = 0; i < eSub.size() && !eos._toSmooth; ++i )
3070 if ( eSub[i]->_cosin > theMinSmoothCosin )
3072 SMDS_ElemIteratorPtr fIt = eSub[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
3073 while ( fIt->more() && !eos._toSmooth )
3075 const SMDS_MeshElement* face = fIt->next();
3076 if ( face->getshapeId() == eos._shapeID &&
3077 getDistFromEdge( face, eSub[i]->_nodes[0], faceSize ))
3079 eos._toSmooth = needSmoothing( eSub[i]->_cosin,
3080 tgtThick * eSub[i]->_lenFactor,
3086 if ( eos._toSmooth )
3088 for ( TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
3089 edgesOfSmooFaces.Add( eExp.Current() );
3091 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
3093 data._nbShapesToSmooth += eos._toSmooth;
3097 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
3099 _EdgesOnShape& eos = edgesByGeom[iS];
3100 eos._edgeSmoother = NULL;
3101 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
3102 if ( !eos._hyp.ToSmooth() ) continue;
3104 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
3105 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
3108 double tgtThick = eos._hyp.GetTotalThickness();
3109 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
3111 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
3112 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
3113 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
3114 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ));
3115 double angle = eDir.Angle( eV[0]->_normal );
3116 double cosin = Cos( angle );
3117 double cosinAbs = Abs( cosin );
3118 if ( cosinAbs > theMinSmoothCosin )
3120 // always smooth analytic EDGEs
3121 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
3122 eos._toSmooth = ! curve.IsNull();
3124 // compare tgtThick with the length of an end segment
3125 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
3126 while ( eIt->more() && !eos._toSmooth )
3128 const SMDS_MeshElement* endSeg = eIt->next();
3129 if ( endSeg->getshapeId() == (int) iS )
3132 SMESH_TNodeXYZ( endSeg->GetNode( 0 )).Distance( endSeg->GetNode( 1 ));
3133 eos._toSmooth = needSmoothing( cosinAbs, tgtThick * eV[0]->_lenFactor, segLen );
3136 if ( eos._toSmooth )
3138 eos._edgeSmoother = new _Smoother1D( curve, eos );
3140 // for ( size_t i = 0; i < eos._edges.size(); ++i )
3141 // eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
3145 data._nbShapesToSmooth += eos._toSmooth;
3149 // Reset _cosin if no smooth is allowed by the user
3150 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
3152 _EdgesOnShape& eos = edgesByGeom[iS];
3153 if ( eos._edges.empty() ) continue;
3155 if ( !eos._hyp.ToSmooth() )
3156 for ( size_t i = 0; i < eos._edges.size(); ++i )
3157 //eos._edges[i]->SetCosin( 0 ); // keep _cosin to use in limitMaxLenByCurvature()
3158 eos._edges[i]->_lenFactor = 1;
3162 // Fill _eosC1 to make that C1 FACEs and EDGEs between them to be smoothed as a whole
3164 TopTools_MapOfShape c1VV;
3166 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3168 _EdgesOnShape& eos = edgesByGeom[iS];
3169 if ( eos._edges.empty() ||
3170 eos.ShapeType() != TopAbs_FACE ||
3174 // check EDGEs of a FACE
3175 TopTools_MapOfShape checkedEE, allVV;
3176 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
3177 while ( !smQueue.empty() )
3179 SMESH_subMesh* sm = smQueue.front();
3180 smQueue.pop_front();
3181 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3182 while ( smIt->more() )
3185 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
3186 allVV.Add( sm->GetSubShape() );
3187 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
3188 !checkedEE.Add( sm->GetSubShape() ))
3191 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
3192 vector<_LayerEdge*>& eE = eoe->_edges;
3193 if ( eE.empty() || !eoe->_sWOL.IsNull() )
3196 bool isC1 = true; // check continuity along an EDGE
3197 for ( size_t i = 0; i < eE.size() && isC1; ++i )
3198 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
3202 // check that mesh faces are C1 as well
3204 gp_XYZ norm1, norm2;
3205 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
3206 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
3207 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
3209 while ( fIt->more() && isC1 )
3210 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
3211 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
3216 // add the EDGE and an adjacent FACE to _eosC1
3217 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
3218 while ( const TopoDS_Shape* face = fIt->next() )
3220 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3221 if ( !eof ) continue; // other solid
3222 if ( eos._shapeID == eof->_shapeID ) continue;
3223 if ( !eos.HasC1( eof ))
3226 eos._eosC1.push_back( eof );
3227 eof->_toSmooth = false;
3228 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3229 smQueue.push_back( eof->_subMesh );
3231 if ( !eos.HasC1( eoe ))
3233 eos._eosC1.push_back( eoe );
3234 eoe->_toSmooth = false;
3235 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3240 if ( eos._eosC1.empty() )
3243 // check VERTEXes of C1 FACEs
3244 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3245 for ( ; vIt.More(); vIt.Next() )
3247 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3248 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3251 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3252 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3253 while ( const TopoDS_Shape* face = fIt->next() )
3255 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3256 if ( !eof ) continue; // other solid
3257 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3263 eos._eosC1.push_back( eov );
3264 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3265 c1VV.Add( eov->_shape );
3269 } // fill _eosC1 of FACEs
3274 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3276 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3278 _EdgesOnShape& eov = edgesByGeom[iS];
3279 if ( eov._edges.empty() ||
3280 eov.ShapeType() != TopAbs_VERTEX ||
3281 c1VV.Contains( eov._shape ))
3283 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3285 // get directions of surrounding EDGEs
3287 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3288 while ( const TopoDS_Shape* e = fIt->next() )
3290 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3291 if ( !eoe ) continue; // other solid
3292 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V );
3293 if ( !Precision::IsInfinite( eDir.X() ))
3294 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3297 // find EDGEs with C1 directions
3298 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3299 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3300 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3302 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3303 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3306 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3307 double eLen1 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[i].first->_shape ));
3308 double eLen2 = SMESH_Algo::EdgeLength( TopoDS::Edge( dirOfEdges[j].first->_shape ));
3309 if ( eLen1 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[i].first );
3310 if ( eLen2 < maxEdgeLen ) eov._eosC1.push_back( dirOfEdges[j].first );
3311 dirOfEdges[i].first = 0;
3312 dirOfEdges[j].first = 0;
3315 } // fill _eosC1 of VERTEXes
3322 //================================================================================
3324 * \brief Set up _SolidData::_edgesOnShape
3326 //================================================================================
3328 void _ViscousBuilder::makeEdgesOnShape()
3330 const int nbShapes = getMeshDS()->MaxShapeIndex();
3332 for ( size_t i = 0; i < _sdVec.size(); ++i )
3334 _SolidData& data = _sdVec[ i ];
3335 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3336 edgesByGeom.resize( nbShapes+1 );
3338 // set data of _EdgesOnShape's
3339 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
3341 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3342 while ( smIt->more() )
3345 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
3346 data._ignoreFaceIds.count( sm->GetId() ))
3349 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
3355 //================================================================================
3357 * \brief initialize data of _EdgesOnShape
3359 //================================================================================
3361 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3365 if ( !eos._shape.IsNull() ||
3366 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3369 SMESH_MesherHelper helper( *_mesh );
3372 eos._shapeID = sm->GetId();
3373 eos._shape = sm->GetSubShape();
3374 if ( eos.ShapeType() == TopAbs_FACE )
3375 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3376 eos._toSmooth = false;
3380 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3381 data._shrinkShape2Shape.find( eos._shapeID );
3382 if ( s2s != data._shrinkShape2Shape.end() )
3383 eos._sWOL = s2s->second;
3385 eos._isRegularSWOL = true;
3386 if ( eos.SWOLType() == TopAbs_FACE )
3388 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3389 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3390 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3394 if ( data._hyps.size() == 1 )
3396 eos._hyp = data._hyps.back();
3400 // compute average StdMeshers_ViscousLayers parameters
3401 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3402 if ( eos.ShapeType() == TopAbs_FACE )
3404 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3405 eos._hyp = f2hyp->second;
3409 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3410 while ( const TopoDS_Shape* face = fIt->next() )
3412 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3413 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3414 eos._hyp.Add( f2hyp->second );
3420 if ( ! eos._hyp.UseSurfaceNormal() )
3422 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3424 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3425 if ( !smDS ) return;
3426 eos._faceNormals.reserve( smDS->NbElements() );
3428 double oriFactor = helper.IsReversedSubMesh( TopoDS::Face( eos._shape )) ? 1.: -1.;
3429 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3430 for ( ; eIt->more(); )
3432 const SMDS_MeshElement* face = eIt->next();
3433 gp_XYZ& norm = eos._faceNormals[face];
3434 if ( !SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
3435 norm.SetCoord( 0,0,0 );
3439 else // find EOS of adjacent FACEs
3441 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3442 while ( const TopoDS_Shape* face = fIt->next() )
3444 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3445 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3446 if ( eos._faceEOS.back()->_shape.IsNull() )
3447 // avoid using uninitialised _shapeID in GetNormal()
3448 eos._faceEOS.back()->_shapeID = faceID;
3454 //================================================================================
3456 * \brief Returns normal of a face
3458 //================================================================================
3460 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3463 _EdgesOnShape* eos = 0;
3465 if ( face->getshapeId() == _shapeID )
3471 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3472 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3473 eos = _faceEOS[ iF ];
3477 ( ok = ( eos->_faceNormals.count( face ) )))
3479 norm = eos->_faceNormals[ face ];
3483 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3484 << " on _shape #" << _shapeID );
3489 //================================================================================
3491 * \brief EdgesOnShape destructor
3493 //================================================================================
3495 _EdgesOnShape::~_EdgesOnShape()
3497 delete _edgeSmoother;
3500 //================================================================================
3502 * \brief Set data of _LayerEdge needed for smoothing
3504 //================================================================================
3506 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3508 SMESH_MesherHelper& helper,
3511 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3514 edge._maxLen = Precision::Infinite();
3517 edge._curvature = 0;
3519 edge._smooFunction = 0;
3521 // --------------------------
3522 // Compute _normal and _cosin
3523 // --------------------------
3526 edge._lenFactor = 1.;
3527 edge._normal.SetCoord(0,0,0);
3528 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3530 int totalNbFaces = 0;
3532 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3536 const bool onShrinkShape = !eos._sWOL.IsNull();
3537 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3538 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3540 // get geom FACEs the node lies on
3541 //if ( useGeometry )
3543 set<TGeomID> faceIds;
3544 if ( eos.ShapeType() == TopAbs_FACE )
3546 faceIds.insert( eos._shapeID );
3550 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3551 while ( fIt->more() )
3552 faceIds.insert( fIt->next()->getshapeId() );
3554 set<TGeomID>::iterator id = faceIds.begin();
3555 for ( ; id != faceIds.end(); ++id )
3557 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3558 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3560 F = TopoDS::Face( s );
3561 face2Norm[ totalNbFaces ].first = F;
3567 bool fromVonF = false;
3570 fromVonF = ( eos.ShapeType() == TopAbs_VERTEX &&
3571 eos.SWOLType() == TopAbs_FACE &&
3574 if ( onShrinkShape && !fromVonF ) // one of faces the node is on has no layers
3576 if ( eos.SWOLType() == TopAbs_EDGE )
3578 // inflate from VERTEX along EDGE
3579 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ));
3581 else if ( eos.ShapeType() == TopAbs_VERTEX )
3583 // inflate from VERTEX along FACE
3584 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3585 node, helper, normOK, &edge._cosin);
3589 // inflate from EDGE along FACE
3590 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3591 node, helper, normOK);
3594 else // layers are on all FACEs of SOLID the node is on (or fromVonF)
3597 face2Norm[ totalNbFaces++ ].first = TopoDS::Face( eos._sWOL );
3600 for ( int iF = totalNbFaces - 1; iF >= 0; --iF )
3602 F = face2Norm[ iF ].first;
3603 geomNorm = getFaceNormal( node, F, helper, normOK );
3604 if ( !normOK ) continue;
3607 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3609 face2Norm[ iF ].second = geomNorm.XYZ();
3610 edge._normal += geomNorm.XYZ();
3612 if ( nbOkNorms == 0 )
3613 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3615 if ( totalNbFaces >= 3 )
3617 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces, fromVonF );
3620 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3622 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3623 edge._normal.SetCoord( 0,0,0 );
3624 for ( int iF = 0; iF < totalNbFaces - fromVonF; ++iF )
3626 const TopoDS_Face& F = face2Norm[iF].first;
3627 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3628 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3631 face2Norm[ iF ].second = geomNorm.XYZ();
3632 edge._normal += face2Norm[ iF ].second;
3637 else // !useGeometry - get _normal using surrounding mesh faces
3639 edge._normal = getWeigthedNormal( &edge );
3641 // set<TGeomID> faceIds;
3643 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3644 // while ( fIt->more() )
3646 // const SMDS_MeshElement* face = fIt->next();
3647 // if ( eos.GetNormal( face, geomNorm ))
3649 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3650 // continue; // use only one mesh face on FACE
3651 // edge._normal += geomNorm.XYZ();
3658 //if ( eos._hyp.UseSurfaceNormal() )
3660 switch ( eos.ShapeType() )
3667 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3668 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3669 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3670 edge._cosin = Cos( angle );
3673 case TopAbs_VERTEX: {
3676 getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3677 node, helper, normOK, &edge._cosin );
3679 else if ( eos.SWOLType() != TopAbs_FACE ) // else _cosin is set by getFaceDir()
3681 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3682 gp_Vec inFaceDir = getFaceDir( F, V, node, helper, normOK );
3683 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3684 edge._cosin = Cos( angle );
3685 if ( totalNbFaces > 2 || helper.IsSeamShape( node->getshapeId() ))
3686 for ( int iF = 1; iF < totalNbFaces; ++iF )
3688 F = face2Norm[ iF ].first;
3689 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3691 double angle = inFaceDir.Angle( edge._normal );
3692 double cosin = Cos( angle );
3693 if ( Abs( cosin ) > Abs( edge._cosin ))
3694 edge._cosin = cosin;
3701 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3705 double normSize = edge._normal.SquareModulus();
3706 if ( normSize < numeric_limits<double>::min() )
3707 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3709 edge._normal /= sqrt( normSize );
3711 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3713 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3714 edge._nodes.resize( 1 );
3715 edge._normal.SetCoord( 0,0,0 );
3716 edge.SetMaxLen( 0 );
3719 // Set the rest data
3720 // --------------------
3722 edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3724 if ( onShrinkShape )
3726 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3727 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3728 sm->RemoveNode( tgtNode );
3730 // set initial position which is parameters on _sWOL in this case
3731 if ( eos.SWOLType() == TopAbs_EDGE )
3733 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3734 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3735 if ( edge._nodes.size() > 1 )
3736 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3738 else // eos.SWOLType() == TopAbs_FACE
3740 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3741 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3742 if ( edge._nodes.size() > 1 )
3743 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3746 if ( edge._nodes.size() > 1 )
3748 // check if an angle between a FACE with layers and SWOL is sharp,
3749 // else the edge should not inflate
3751 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3752 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3753 F = face2Norm[iF].first;
3756 geomNorm = getFaceNormal( node, F, helper, normOK );
3757 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3758 geomNorm.Reverse(); // inside the SOLID
3759 if ( geomNorm * edge._normal < -0.001 )
3761 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3762 edge._nodes.resize( 1 );
3764 else if ( edge._lenFactor > 3 )
3766 edge._lenFactor = 2;
3767 edge.Set( _LayerEdge::RISKY_SWOL );
3774 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3776 if ( eos.ShapeType() == TopAbs_FACE )
3779 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3781 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3782 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3787 // Set neighbor nodes for a _LayerEdge based on EDGE
3789 if ( eos.ShapeType() == TopAbs_EDGE /*||
3790 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3792 edge._2neibors = _Factory::NewNearEdges();
3793 // target nodes instead of source ones will be set later
3799 //================================================================================
3801 * \brief Return normal to a FACE at a node
3802 * \param [in] n - node
3803 * \param [in] face - FACE
3804 * \param [in] helper - helper
3805 * \param [out] isOK - true or false
3806 * \param [in] shiftInside - to find normal at a position shifted inside the face
3807 * \return gp_XYZ - normal
3809 //================================================================================
3811 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3812 const TopoDS_Face& face,
3813 SMESH_MesherHelper& helper,
3820 // get a shifted position
3821 gp_Pnt p = SMESH_TNodeXYZ( node );
3822 gp_XYZ shift( 0,0,0 );
3823 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
3824 switch ( S.ShapeType() ) {
3827 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
3832 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
3840 p.Translate( shift * 1e-5 );
3842 TopLoc_Location loc;
3843 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
3845 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
3847 projector.Perform( p );
3848 if ( !projector.IsDone() || projector.NbPoints() < 1 )
3854 projector.LowerDistanceParameters(U,V);
3859 uv = helper.GetNodeUV( face, node, 0, &isOK );
3865 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
3867 if ( !shiftInside &&
3868 helper.IsDegenShape( node->getshapeId() ) &&
3869 getFaceNormalAtSingularity( uv, face, helper, normal ))
3872 return normal.XYZ();
3875 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
3876 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3878 if ( pointKind == IMPOSSIBLE &&
3879 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
3881 // probably NormEstim() failed due to a too high tolerance
3882 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
3883 isOK = ( pointKind < IMPOSSIBLE );
3885 if ( pointKind < IMPOSSIBLE )
3887 if ( pointKind != REGULAR &&
3889 node->GetPosition()->GetDim() < 2 ) // FACE boundary
3891 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
3892 if ( normShift * normal.XYZ() < 0. )
3898 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
3900 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
3902 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3903 while ( fIt->more() )
3905 const SMDS_MeshElement* f = fIt->next();
3906 if ( f->getshapeId() == faceID )
3908 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
3911 TopoDS_Face ff = face;
3912 ff.Orientation( TopAbs_FORWARD );
3913 if ( helper.IsReversedSubMesh( ff ))
3920 return normal.XYZ();
3923 //================================================================================
3925 * \brief Try to get normal at a singularity of a surface basing on it's nature
3927 //================================================================================
3929 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
3930 const TopoDS_Face& face,
3931 SMESH_MesherHelper& helper,
3934 BRepAdaptor_Surface surface( face );
3936 if ( !getRovolutionAxis( surface, axis ))
3939 double f,l, d, du, dv;
3940 f = surface.FirstUParameter();
3941 l = surface.LastUParameter();
3942 d = ( uv.X() - f ) / ( l - f );
3943 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3944 f = surface.FirstVParameter();
3945 l = surface.LastVParameter();
3946 d = ( uv.Y() - f ) / ( l - f );
3947 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
3950 gp_Pnt2d testUV = uv;
3951 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
3953 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
3954 for ( int iLoop = 0; true ; ++iLoop )
3956 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
3957 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
3964 if ( axis * refDir < 0. )
3972 //================================================================================
3974 * \brief Return a normal at a node weighted with angles taken by faces
3976 //================================================================================
3978 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
3980 const SMDS_MeshNode* n = edge->_nodes[0];
3982 gp_XYZ resNorm(0,0,0);
3983 SMESH_TNodeXYZ p0( n ), pP, pN;
3984 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
3986 pP.Set( edge->_simplices[i]._nPrev );
3987 pN.Set( edge->_simplices[i]._nNext );
3988 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
3989 double l0P = v0P.SquareMagnitude();
3990 double l0N = v0N.SquareMagnitude();
3991 double lPN = vPN.SquareMagnitude();
3992 if ( l0P < std::numeric_limits<double>::min() ||
3993 l0N < std::numeric_limits<double>::min() ||
3994 lPN < std::numeric_limits<double>::min() )
3996 double lNorm = norm.SquareMagnitude();
3997 double sin2 = lNorm / l0P / l0N;
3998 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
4000 double weight = sin2 * angle / lPN;
4001 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
4007 //================================================================================
4009 * \brief Return a normal at a node by getting a common point of offset planes
4010 * defined by the FACE normals
4012 //================================================================================
4014 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
4015 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
4019 SMESH_TNodeXYZ p0 = edge->_nodes[0];
4021 gp_XYZ resNorm(0,0,0);
4022 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
4023 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
4025 for ( int i = 0; i < nbFaces; ++i )
4026 resNorm += f2Normal[i].second;
4030 // prepare _OffsetPlane's
4031 vector< _OffsetPlane > pln( nbFaces );
4032 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4034 pln[i]._faceIndex = i;
4035 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
4039 pln[ nbFaces - 1 ]._faceIndex = nbFaces - 1;
4040 pln[ nbFaces - 1 ]._plane = gp_Pln( p0, f2Normal[ nbFaces - 1 ].second );
4043 // intersect neighboring OffsetPlane's
4044 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
4045 while ( const TopoDS_Shape* edge = edgeIt->next() )
4047 int f1 = -1, f2 = -1;
4048 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
4049 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
4050 (( f1 < 0 ) ? f1 : f2 ) = i;
4053 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ], TopoDS::Edge( *edge ), TopoDS::Vertex( V ));
4056 // get a common point
4057 gp_XYZ commonPnt( 0, 0, 0 );
4060 for ( int i = 0; i < nbFaces; ++i )
4062 commonPnt += pln[ i ].GetCommonPoint( isPointFound, TopoDS::Vertex( V ));
4063 nbPoints += isPointFound;
4065 gp_XYZ wgtNorm = getWeigthedNormal( edge );
4066 if ( nbPoints == 0 )
4069 commonPnt /= nbPoints;
4070 resNorm = commonPnt - p0;
4074 // choose the best among resNorm and wgtNorm
4075 resNorm.Normalize();
4076 wgtNorm.Normalize();
4077 double resMinDot = std::numeric_limits<double>::max();
4078 double wgtMinDot = std::numeric_limits<double>::max();
4079 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4081 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
4082 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
4085 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
4087 edge->Set( _LayerEdge::MULTI_NORMAL );
4090 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
4093 //================================================================================
4095 * \brief Compute line of intersection of 2 planes
4097 //================================================================================
4099 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln,
4100 const TopoDS_Edge& E,
4101 const TopoDS_Vertex& V )
4103 int iNext = bool( _faceIndexNext[0] >= 0 );
4104 _faceIndexNext[ iNext ] = pln._faceIndex;
4106 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
4107 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
4109 gp_XYZ lineDir = n1 ^ n2;
4111 double x = Abs( lineDir.X() );
4112 double y = Abs( lineDir.Y() );
4113 double z = Abs( lineDir.Z() );
4115 int cooMax; // max coordinate
4117 if (x > z) cooMax = 1;
4121 if (y > z) cooMax = 2;
4126 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
4128 // parallel planes - intersection is an offset of the common EDGE
4129 gp_Pnt p = BRep_Tool::Pnt( V );
4130 linePos = 0.5 * (( p.XYZ() + n1 ) + ( p.XYZ() + n2 ));
4131 lineDir = getEdgeDir( E, V );
4135 // the constants in the 2 plane equations
4136 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
4137 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
4142 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
4143 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
4146 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
4148 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
4151 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
4152 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
4156 gp_Lin& line = _lines[ iNext ];
4157 line.SetDirection( lineDir );
4158 line.SetLocation ( linePos );
4160 _isLineOK[ iNext ] = true;
4163 iNext = bool( pln._faceIndexNext[0] >= 0 );
4164 pln._lines [ iNext ] = line;
4165 pln._faceIndexNext[ iNext ] = this->_faceIndex;
4166 pln._isLineOK [ iNext ] = true;
4169 //================================================================================
4171 * \brief Computes intersection point of two _lines
4173 //================================================================================
4175 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound,
4176 const TopoDS_Vertex & V) const
4181 if ( NbLines() == 2 )
4183 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
4184 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
4185 if ( Abs( dot01 ) > 0.05 )
4187 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
4188 double u1 = - ( lPerp0 * l0l1 ) / dot01;
4189 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
4194 gp_Pnt pV ( BRep_Tool::Pnt( V ));
4195 gp_Vec lv0( _lines[0].Location(), pV ), lv1(_lines[1].Location(), pV );
4196 double dot0( lv0 * _lines[0].Direction() ), dot1( lv1 * _lines[1].Direction() );
4197 p += 0.5 * ( _lines[0].Location().XYZ() + _lines[0].Direction().XYZ() * dot0 );
4198 p += 0.5 * ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * dot1 );
4206 //================================================================================
4208 * \brief Find 2 neighbor nodes of a node on EDGE
4210 //================================================================================
4212 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
4213 const SMDS_MeshNode*& n1,
4214 const SMDS_MeshNode*& n2,
4218 const SMDS_MeshNode* node = edge->_nodes[0];
4219 const int shapeInd = eos._shapeID;
4220 SMESHDS_SubMesh* edgeSM = 0;
4221 if ( eos.ShapeType() == TopAbs_EDGE )
4223 edgeSM = eos._subMesh->GetSubMeshDS();
4224 if ( !edgeSM || edgeSM->NbElements() == 0 )
4225 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
4229 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
4230 while ( eIt->more() && !n2 )
4232 const SMDS_MeshElement* e = eIt->next();
4233 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
4234 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
4237 if (!edgeSM->Contains(e)) continue;
4241 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
4242 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
4244 ( iN++ ? n2 : n1 ) = nNeibor;
4247 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
4251 //================================================================================
4253 * \brief Create _Curvature
4255 //================================================================================
4257 _Curvature* _Curvature::New( double avgNormProj, double avgDist )
4259 // double _r; // radius
4260 // double _k; // factor to correct node smoothed position
4261 // double _h2lenRatio; // avgNormProj / (2*avgDist)
4262 // gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
4265 if ( fabs( avgNormProj / avgDist ) > 1./200 )
4267 c = _Factory::NewCurvature();
4268 c->_r = avgDist * avgDist / avgNormProj;
4269 c->_k = avgDist * avgDist / c->_r / c->_r;
4270 //c->_k = avgNormProj / c->_r;
4271 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
4272 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
4274 c->_uv.SetCoord( 0., 0. );
4279 //================================================================================
4281 * \brief Set _curvature and _2neibors->_plnNorm by 2 neighbor nodes residing the same EDGE
4283 //================================================================================
4285 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
4286 const SMDS_MeshNode* n2,
4287 const _EdgesOnShape& eos,
4288 SMESH_MesherHelper& helper)
4290 if ( eos.ShapeType() != TopAbs_EDGE )
4292 if ( _curvature && Is( SMOOTHED_C1 ))
4295 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
4296 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
4297 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
4301 double sumLen = vec1.Modulus() + vec2.Modulus();
4302 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
4303 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
4304 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
4305 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
4306 _curvature = _Curvature::New( avgNormProj, avgLen );
4307 // if ( _curvature )
4308 // debugMsg( _nodes[0]->GetID()
4309 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
4310 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
4311 // << _curvature->lenDelta(0) );
4315 if ( eos._sWOL.IsNull() )
4317 TopoDS_Edge E = TopoDS::Edge( eos._shape );
4318 // if ( SMESH_Algo::isDegenerated( E ))
4320 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
4321 gp_XYZ plnNorm = dirE ^ _normal;
4322 double proj0 = plnNorm * vec1;
4323 double proj1 = plnNorm * vec2;
4324 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
4326 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
4327 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
4332 //================================================================================
4334 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4335 * this and the other _LayerEdge are inflated along a FACE or an EDGE
4337 //================================================================================
4339 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4341 SMESH_MesherHelper& helper )
4343 _nodes = other._nodes;
4344 _normal = other._normal;
4346 _lenFactor = other._lenFactor;
4347 _cosin = other._cosin;
4348 _2neibors = other._2neibors;
4349 _curvature = other._curvature;
4350 _2neibors = other._2neibors;
4351 _maxLen = Precision::Infinite();//other._maxLen;
4355 gp_XYZ lastPos( 0,0,0 );
4356 if ( eos.SWOLType() == TopAbs_EDGE )
4358 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4359 _pos.push_back( gp_XYZ( u, 0, 0));
4361 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4366 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4367 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4369 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4370 lastPos.SetX( uv.X() );
4371 lastPos.SetY( uv.Y() );
4376 //================================================================================
4378 * \brief Set _cosin and _lenFactor
4380 //================================================================================
4382 void _LayerEdge::SetCosin( double cosin )
4385 cosin = Abs( _cosin );
4386 //_lenFactor = ( cosin < 1.-1e-12 ) ? Min( 2., 1./sqrt(1-cosin*cosin )) : 1.0;
4387 _lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4390 //================================================================================
4392 * \brief Check if another _LayerEdge is a neighbor on EDGE
4394 //================================================================================
4396 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4398 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4399 ( edge->_2neibors && edge->_2neibors->include( this )));
4402 //================================================================================
4404 * \brief Fills a vector<_Simplex >
4406 //================================================================================
4408 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4409 vector<_Simplex>& simplices,
4410 const set<TGeomID>& ingnoreShapes,
4411 const _SolidData* dataToCheckOri,
4415 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4416 while ( fIt->more() )
4418 const SMDS_MeshElement* f = fIt->next();
4419 const TGeomID shapeInd = f->getshapeId();
4420 if ( ingnoreShapes.count( shapeInd )) continue;
4421 const int nbNodes = f->NbCornerNodes();
4422 const int srcInd = f->GetNodeIndex( node );
4423 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4424 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4425 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4426 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4427 std::swap( nPrev, nNext );
4428 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4432 SortSimplices( simplices );
4435 //================================================================================
4437 * \brief Set neighbor simplices side by side
4439 //================================================================================
4441 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4443 vector<_Simplex> sortedSimplices( simplices.size() );
4444 sortedSimplices[0] = simplices[0];
4446 for ( size_t i = 1; i < simplices.size(); ++i )
4448 for ( size_t j = 1; j < simplices.size(); ++j )
4449 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4451 sortedSimplices[i] = simplices[j];
4456 if ( nbFound == simplices.size() - 1 )
4457 simplices.swap( sortedSimplices );
4460 //================================================================================
4462 * \brief DEBUG. Create groups containing temporary data of _LayerEdge's
4464 //================================================================================
4466 void _ViscousBuilder::makeGroupOfLE()
4469 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4471 if ( _sdVec[i]._n2eMap.empty() ) continue;
4473 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4474 TNode2Edge::iterator n2e;
4475 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4477 _LayerEdge* le = n2e->second;
4478 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4479 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4480 // << ", " << le->_nodes[iN]->GetID() <<"])");
4482 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4483 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4488 dumpFunction( SMESH_Comment("makeNormals") << i );
4489 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4491 _LayerEdge* edge = n2e->second;
4492 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4493 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4494 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4495 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4499 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4500 dumpCmd( "faceId1 = mesh.NbElements()" );
4501 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4502 for ( ; fExp.More(); fExp.Next() )
4504 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4506 if ( sm->NbElements() == 0 ) continue;
4507 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4508 while ( fIt->more())
4510 const SMDS_MeshElement* e = fIt->next();
4511 SMESH_Comment cmd("mesh.AddFace([");
4512 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4513 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4518 dumpCmd( "faceId2 = mesh.NbElements()" );
4519 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4520 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4521 << "'%s-%s' % (faceId1+1, faceId2))");
4527 //================================================================================
4529 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4531 //================================================================================
4533 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4535 data._geomSize = Precision::Infinite();
4536 double intersecDist;
4537 const SMDS_MeshElement* face;
4538 SMESH_MesherHelper helper( *_mesh );
4540 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4541 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4542 data._proxyMesh->GetFaces( data._solid )));
4544 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4546 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4547 if ( eos._edges.empty() )
4549 // get neighbor faces, intersection with which should not be considered since
4550 // collisions are avoided by means of smoothing
4551 set< TGeomID > neighborFaces;
4552 if ( eos._hyp.ToSmooth() )
4554 SMESH_subMeshIteratorPtr subIt =
4555 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4556 while ( subIt->more() )
4558 SMESH_subMesh* sm = subIt->next();
4559 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4560 while ( const TopoDS_Shape* face = fIt->next() )
4561 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4564 // find intersections
4565 double thinkness = eos._hyp.GetTotalThickness();
4566 for ( size_t i = 0; i < eos._edges.size(); ++i )
4568 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
4569 eos._edges[i]->SetMaxLen( thinkness );
4570 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4571 if ( intersecDist > 0 && face )
4573 data._geomSize = Min( data._geomSize, intersecDist );
4574 if ( !neighborFaces.count( face->getshapeId() ))
4575 eos[i]->SetMaxLen( Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. )));
4580 data._maxThickness = 0;
4581 data._minThickness = 1e100;
4582 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
4583 for ( ; hyp != data._hyps.end(); ++hyp )
4585 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
4586 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
4589 // Limit inflation step size by geometry size found by intersecting
4590 // normals of _LayerEdge's with mesh faces
4591 if ( data._stepSize > 0.3 * data._geomSize )
4592 limitStepSize( data, 0.3 * data._geomSize );
4594 if ( data._stepSize > data._minThickness )
4595 limitStepSize( data, data._minThickness );
4598 // -------------------------------------------------------------------------
4599 // Detect _LayerEdge which can't intersect with opposite or neighbor layer,
4600 // so no need in detecting intersection at each inflation step
4601 // -------------------------------------------------------------------------
4603 int nbSteps = data._maxThickness / data._stepSize;
4604 if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 )
4607 vector< const SMDS_MeshElement* > closeFaces;
4610 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4612 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4613 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
4616 for ( size_t i = 0; i < eos.size(); ++i )
4618 SMESH_NodeXYZ p( eos[i]->_nodes[0] );
4619 double radius = data._maxThickness + 2 * eos[i]->_maxLen;
4621 searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces );
4623 bool toIgnore = true;
4624 for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF )
4625 if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID ||
4626 data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() ))))
4628 // check if a _LayerEdge will inflate in a direction opposite to a direction
4629 // toward a close face
4630 bool allBehind = true;
4631 for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN )
4633 SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN ));
4634 allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize );
4636 toIgnore = allBehind;
4640 if ( toIgnore ) // no need to detect intersection
4642 eos[i]->Set( _LayerEdge::INTERSECTED );
4648 debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected );
4653 //================================================================================
4655 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4657 //================================================================================
4659 bool _ViscousBuilder::inflate(_SolidData& data)
4661 SMESH_MesherHelper helper( *_mesh );
4663 const double tgtThick = data._maxThickness;
4665 if ( data._stepSize < 1. )
4666 data._epsilon = data._stepSize * 1e-7;
4668 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4671 findCollisionEdges( data, helper );
4673 limitMaxLenByCurvature( data, helper );
4677 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4678 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4679 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4680 data._edgesOnShape[i]._edges.size() > 0 &&
4681 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4683 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4684 data._edgesOnShape[i]._edges[0]->Block( data );
4687 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4689 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4690 int nbSteps = 0, nbRepeats = 0;
4691 while ( avgThick < 0.99 )
4693 // new target length
4694 double prevThick = curThick;
4695 curThick += data._stepSize;
4696 if ( curThick > tgtThick )
4698 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4702 double stepSize = curThick - prevThick;
4703 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4705 // Elongate _LayerEdge's
4706 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4707 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4709 _EdgesOnShape& eos = data._edgesOnShape[iS];
4710 if ( eos._edges.empty() ) continue;
4712 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4713 for ( size_t i = 0; i < eos._edges.size(); ++i )
4715 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4720 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4723 // Improve and check quality
4724 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4728 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4729 debugMsg("NOT INVALIDATED STEP!");
4730 return error("Smoothing failed", data._index);
4732 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4733 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4735 _EdgesOnShape& eos = data._edgesOnShape[iS];
4736 for ( size_t i = 0; i < eos._edges.size(); ++i )
4737 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4741 break; // no more inflating possible
4745 // Evaluate achieved thickness
4747 int nbActiveEdges = 0;
4748 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4750 _EdgesOnShape& eos = data._edgesOnShape[iS];
4751 if ( eos._edges.empty() ) continue;
4753 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4754 for ( size_t i = 0; i < eos._edges.size(); ++i )
4756 if ( eos._edges[i]->_nodes.size() > 1 )
4757 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4759 avgThick += shapeTgtThick;
4760 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4763 avgThick /= data._n2eMap.size();
4764 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4766 #ifdef BLOCK_INFLATION
4767 if ( nbActiveEdges == 0 )
4769 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4773 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4775 debugMsg( "-- Stop inflation since "
4776 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4777 << tgtThick * avgThick << " ) * " << safeFactor );
4783 limitStepSize( data, 0.25 * distToIntersection );
4784 if ( data._stepSizeNodes[0] )
4785 data._stepSize = data._stepSizeCoeff *
4786 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4788 } // while ( avgThick < 0.99 )
4791 return error("failed at the very first inflation step", data._index);
4793 if ( avgThick < 0.99 )
4795 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4797 data._proxyMesh->_warning.reset
4798 ( new SMESH_ComputeError (COMPERR_WARNING,
4799 SMESH_Comment("Thickness ") << tgtThick <<
4800 " of viscous layers not reached,"
4801 " average reached thickness is " << avgThick*tgtThick));
4805 // Restore position of src nodes moved by inflation on _noShrinkShapes
4806 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
4807 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4809 _EdgesOnShape& eos = data._edgesOnShape[iS];
4810 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
4811 for ( size_t i = 0; i < eos._edges.size(); ++i )
4813 restoreNoShrink( *eos._edges[ i ] );
4818 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
4821 //================================================================================
4823 * \brief Improve quality of layer inner surface and check intersection
4825 //================================================================================
4827 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
4829 double & distToIntersection)
4831 if ( data._nbShapesToSmooth == 0 )
4832 return true; // no shapes needing smoothing
4834 bool moved, improved;
4836 vector< _LayerEdge* > movedEdges, badEdges;
4837 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
4838 vector< bool > isConcaveFace;
4840 SMESH_MesherHelper helper(*_mesh);
4841 Handle(ShapeAnalysis_Surface) surface;
4844 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
4846 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
4848 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4850 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4851 if ( !eos._toSmooth ||
4852 eos.ShapeType() != shapeType ||
4853 eos._edges.empty() )
4856 // already smoothed?
4857 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
4858 // if ( !toSmooth ) continue;
4860 if ( !eos._hyp.ToSmooth() )
4862 // smooth disabled by the user; check validy only
4863 if ( !isFace ) continue;
4865 for ( size_t i = 0; i < eos._edges.size(); ++i )
4867 _LayerEdge* edge = eos._edges[i];
4868 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
4869 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
4871 // debugMsg( "-- Stop inflation. Bad simplex ("
4872 // << " "<< edge->_nodes[0]->GetID()
4873 // << " "<< edge->_nodes.back()->GetID()
4874 // << " "<< edge->_simplices[iF]._nPrev->GetID()
4875 // << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
4877 badEdges.push_back( edge );
4880 if ( !badEdges.empty() )
4884 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
4888 continue; // goto the next EDGE or FACE
4892 if ( eos.SWOLType() == TopAbs_FACE )
4894 if ( !F.IsSame( eos._sWOL )) {
4895 F = TopoDS::Face( eos._sWOL );
4896 helper.SetSubShape( F );
4897 surface = helper.GetSurface( F );
4902 F.Nullify(); surface.Nullify();
4904 const TGeomID sInd = eos._shapeID;
4906 // perform smoothing
4908 if ( eos.ShapeType() == TopAbs_EDGE )
4910 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
4912 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
4914 // smooth on EDGE's (normally we should not get here)
4918 for ( size_t i = 0; i < eos._edges.size(); ++i )
4920 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
4922 dumpCmd( SMESH_Comment("# end step ")<<step);
4924 while ( moved && step++ < 5 );
4929 else // smooth on FACE
4932 eosC1.push_back( & eos );
4933 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
4936 isConcaveFace.resize( eosC1.size() );
4937 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4939 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
4940 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4941 for ( size_t i = 0; i < edges.size(); ++i )
4942 if ( edges[i]->Is( _LayerEdge::MOVED ) ||
4943 edges[i]->Is( _LayerEdge::NEAR_BOUNDARY ))
4944 movedEdges.push_back( edges[i] );
4946 makeOffsetSurface( *eosC1[ iEOS ], helper );
4949 int step = 0, stepLimit = 5, nbBad = 0;
4950 while (( ++step <= stepLimit ) || improved )
4952 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
4953 <<"_InfStep"<<infStep<<"_"<<step); // debug
4954 int oldBadNb = nbBad;
4957 #ifdef INCREMENTAL_SMOOTH
4958 bool findBest = false; // ( step == stepLimit );
4959 for ( size_t i = 0; i < movedEdges.size(); ++i )
4961 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
4962 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
4963 badEdges.push_back( movedEdges[i] );
4966 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
4967 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4969 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
4970 for ( size_t i = 0; i < edges.size(); ++i )
4972 edges[i]->Unset( _LayerEdge::SMOOTHED );
4973 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
4974 badEdges.push_back( eos._edges[i] );
4978 nbBad = badEdges.size();
4981 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
4983 if ( !badEdges.empty() && step >= stepLimit / 2 )
4985 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
4988 // resolve hard smoothing situation around concave VERTEXes
4989 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
4991 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
4992 for ( size_t i = 0; i < eosCoVe.size(); ++i )
4993 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
4996 // look for the best smooth of _LayerEdge's neighboring badEdges
4998 for ( size_t i = 0; i < badEdges.size(); ++i )
5000 _LayerEdge* ledge = badEdges[i];
5001 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
5003 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
5004 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
5006 ledge->Unset( _LayerEdge::SMOOTHED );
5007 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
5009 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5012 if ( nbBad == oldBadNb &&
5014 step < stepLimit ) // smooth w/o check of validity
5017 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
5018 <<"_InfStep"<<infStep<<"_"<<step); // debug
5019 for ( size_t i = 0; i < movedEdges.size(); ++i )
5021 movedEdges[i]->SmoothWoCheck();
5023 if ( stepLimit < 9 )
5027 improved = ( nbBad < oldBadNb );
5031 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
5032 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5034 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1, step, /*moveAll=*/step == 1 );
5037 } // smoothing steps
5039 // project -- to prevent intersections or fix bad simplices
5040 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5042 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
5043 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1 );
5046 //if ( !badEdges.empty() )
5049 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5051 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5053 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5055 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5056 edge->CheckNeiborsOnBoundary( & badEdges );
5057 if (( nbBad > 0 ) ||
5058 ( edge->Is( _LayerEdge::BLOCKED ) && edge->Is( _LayerEdge::NEAR_BOUNDARY )))
5060 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5061 gp_XYZ prevXYZ = edge->PrevCheckPos();
5062 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5063 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5065 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
5066 << " "<< tgtXYZ._node->GetID()
5067 << " "<< edge->_simplices[j]._nPrev->GetID()
5068 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5069 badEdges.push_back( edge );
5076 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5077 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5083 } // // smooth on FACE's
5085 } // smooth on [ EDGEs, FACEs ]
5087 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
5089 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5091 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5092 if ( eos.ShapeType() == TopAbs_FACE ||
5093 eos._edges.empty() ||
5094 !eos._sWOL.IsNull() )
5098 for ( size_t i = 0; i < eos._edges.size(); ++i )
5100 _LayerEdge* edge = eos._edges[i];
5101 if ( edge->_nodes.size() < 2 ) continue;
5102 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5103 //SMESH_TNodeXYZ prevXYZ = edge->_nodes[0];
5104 gp_XYZ prevXYZ = edge->PrevCheckPos( &eos );
5105 //const gp_XYZ& prevXYZ = edge->PrevPos();
5106 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5107 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5109 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
5110 << " "<< tgtXYZ._node->GetID()
5111 << " "<< edge->_simplices[j]._nPrev->GetID()
5112 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5113 badEdges.push_back( edge );
5118 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5120 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5126 // Check if the last segments of _LayerEdge intersects 2D elements;
5127 // checked elements are either temporary faces or faces on surfaces w/o the layers
5129 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
5130 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
5131 data._proxyMesh->GetFaces( data._solid )) );
5133 #ifdef BLOCK_INFLATION
5134 const bool toBlockInfaltion = true;
5136 const bool toBlockInfaltion = false;
5138 distToIntersection = Precision::Infinite();
5140 const SMDS_MeshElement* intFace = 0;
5141 const SMDS_MeshElement* closestFace = 0;
5143 bool is1stBlocked = true; // dbg
5144 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5146 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5147 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
5149 for ( size_t i = 0; i < eos._edges.size(); ++i )
5151 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
5152 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
5154 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5157 // commented due to "Illegal hash-positionPosition" error in NETGEN
5158 // on Debian60 on viscous_layers_01/B2 case
5159 // Collision; try to deflate _LayerEdge's causing it
5160 // badEdges.clear();
5161 // badEdges.push_back( eos._edges[i] );
5162 // eosC1[0] = & eos;
5163 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5167 // badEdges.clear();
5168 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5170 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5172 // const SMDS_MeshElement* srcFace =
5173 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
5174 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5175 // while ( nIt->more() )
5177 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5178 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5179 // if ( n2e != data._n2eMap.end() )
5180 // badEdges.push_back( n2e->second );
5183 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5188 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5195 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
5200 const bool isShorterDist = ( distToIntersection > dist );
5201 if ( toBlockInfaltion || isShorterDist )
5203 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
5204 // lying on this _ConvexFace
5205 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
5206 if ( convFace->_isTooCurved && convFace->_subIdToEOS.count ( eos._shapeID ))
5209 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
5210 // ( avoid limiting the thickness on the case of issue 22576)
5211 if ( intFace->getshapeId() == eos._shapeID )
5214 // ignore intersection with intFace of an adjacent FACE
5215 if ( dist > 0.1 * eos._edges[i]->_len )
5217 bool toIgnore = false;
5218 if ( eos._toSmooth )
5220 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
5221 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
5223 TopExp_Explorer sub( eos._shape,
5224 eos.ShapeType() == TopAbs_FACE ? TopAbs_EDGE : TopAbs_VERTEX );
5225 for ( ; !toIgnore && sub.More(); sub.Next() )
5226 // is adjacent - has a common EDGE or VERTEX
5227 toIgnore = ( helper.IsSubShape( sub.Current(), S ));
5229 if ( toIgnore ) // check angle between normals
5232 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
5233 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
5237 if ( !toIgnore ) // check if the edge is a neighbor of intFace
5239 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
5241 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
5242 toIgnore = ( nInd >= 0 );
5249 // intersection not ignored
5251 if ( toBlockInfaltion &&
5252 dist < ( eos._edges[i]->_len * theThickToIntersection ))
5254 if ( is1stBlocked ) { is1stBlocked = false; // debug
5255 dumpFunction(SMESH_Comment("blockIntersected") <<data._index<<"_InfStep"<<infStep);
5257 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
5258 eos._edges[i]->Block( data ); // not to inflate
5260 //if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5262 // block _LayerEdge's, on top of which intFace is
5263 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5265 const SMDS_MeshElement* srcFace = f->_srcFace;
5266 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5267 while ( nIt->more() )
5269 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5270 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5271 if ( n2e != data._n2eMap.end() )
5272 n2e->second->Block( data );
5278 if ( isShorterDist )
5280 distToIntersection = dist;
5282 closestFace = intFace;
5285 } // if ( toBlockInfaltion || isShorterDist )
5286 } // loop on eos._edges
5287 } // loop on data._edgesOnShape
5289 if ( !is1stBlocked )
5292 if ( closestFace && le )
5295 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
5296 cout << "#Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
5297 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
5298 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
5299 << ") distance = " << distToIntersection<< endl;
5306 //================================================================================
5308 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5309 * \param [in,out] badSmooEdges - _LayerEdge's to fix
5310 * \return int - resulting nb of bad _LayerEdge's
5312 //================================================================================
5314 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
5315 SMESH_MesherHelper& helper,
5316 vector< _LayerEdge* >& badSmooEdges,
5317 vector< _EdgesOnShape* >& eosC1,
5320 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
5322 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
5325 INVALIDATED = _LayerEdge::UNUSED_FLAG,
5326 TO_INVALIDATE = _LayerEdge::UNUSED_FLAG * 2,
5327 ADDED = _LayerEdge::UNUSED_FLAG * 4
5329 data.UnmarkEdges( TO_INVALIDATE & INVALIDATED & ADDED );
5332 bool haveInvalidated = true;
5333 while ( haveInvalidated )
5335 haveInvalidated = false;
5336 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5338 _LayerEdge* edge = badSmooEdges[i];
5339 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5341 bool invalidated = false;
5342 if ( edge->Is( TO_INVALIDATE ) && edge->NbSteps() > 1 )
5344 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5345 edge->Block( data );
5346 edge->Set( INVALIDATED );
5347 edge->Unset( TO_INVALIDATE );
5349 haveInvalidated = true;
5352 // look for _LayerEdge's of bad _simplices
5354 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5355 gp_XYZ prevXYZ1 = edge->PrevCheckPos( eos );
5356 //const gp_XYZ& prevXYZ2 = edge->PrevPos();
5357 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5359 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol ))/* &&
5360 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5364 _LayerEdge* ee[2] = { 0,0 };
5365 for ( size_t iN = 0; iN < edge->_neibors.size() && !ee[1] ; ++iN )
5366 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
5367 ee[ ee[0] != 0 ] = edge->_neibors[iN];
5369 int maxNbSteps = Max( ee[0]->NbSteps(), ee[1]->NbSteps() );
5370 while ( maxNbSteps > edge->NbSteps() && isBad )
5373 for ( int iE = 0; iE < 2; ++iE )
5375 if ( ee[ iE ]->NbSteps() > maxNbSteps &&
5376 ee[ iE ]->NbSteps() > 1 )
5378 _EdgesOnShape* eos = data.GetShapeEdges( ee[ iE ] );
5379 ee[ iE ]->InvalidateStep( ee[ iE ]->NbSteps(), *eos, /*restoreLength=*/true );
5380 ee[ iE ]->Block( data );
5381 ee[ iE ]->Set( INVALIDATED );
5382 haveInvalidated = true;
5385 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) /*&&
5386 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5390 if ( !ee[0]->Is( ADDED )) badSmooEdges.push_back( ee[0] );
5391 if ( !ee[1]->Is( ADDED )) badSmooEdges.push_back( ee[1] );
5392 ee[0]->Set( ADDED );
5393 ee[1]->Set( ADDED );
5396 ee[0]->Set( TO_INVALIDATE );
5397 ee[1]->Set( TO_INVALIDATE );
5401 if ( !invalidated && nbBad > 0 && edge->NbSteps() > 1 )
5403 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5404 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5405 edge->Block( data );
5406 edge->Set( INVALIDATED );
5407 edge->Unset( TO_INVALIDATE );
5408 haveInvalidated = true;
5410 } // loop on badSmooEdges
5411 } // while ( haveInvalidated )
5413 // re-smooth on analytical EDGEs
5414 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5416 _LayerEdge* edge = badSmooEdges[i];
5417 if ( !edge->Is( INVALIDATED )) continue;
5419 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5420 if ( eos->ShapeType() == TopAbs_VERTEX )
5422 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
5423 while ( const TopoDS_Shape* e = eIt->next() )
5424 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
5425 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
5427 // TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
5428 // if ( eoe->SWOLType() == TopAbs_FACE ) {
5429 // F = TopoDS::Face( eoe->_sWOL );
5430 // surface = helper.GetSurface( F );
5432 // eoe->_edgeSmoother->Perform( data, surface, F, helper );
5433 eoe->_edgeSmoother->_anaCurve.Nullify();
5439 // check result of invalidation
5442 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5444 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5446 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5447 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5448 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5449 gp_XYZ prevXYZ = edge->PrevCheckPos( eosC1[ iEOS ]);
5450 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5451 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5454 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
5455 << " "<< tgtXYZ._node->GetID()
5456 << " "<< edge->_simplices[j]._nPrev->GetID()
5457 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5466 //================================================================================
5468 * \brief Create an offset surface
5470 //================================================================================
5472 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
5474 if ( eos._offsetSurf.IsNull() ||
5475 eos._edgeForOffset == 0 ||
5476 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5479 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
5482 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
5483 /*gp_Pnt2d uv=*/baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
5484 double offset = baseSurface->Gap();
5486 eos._offsetSurf.Nullify();
5490 BRepOffsetAPI_MakeOffsetShape offsetMaker;
5491 offsetMaker.PerformByJoin( eos._shape, -offset, Precision::Confusion() );
5492 if ( !offsetMaker.IsDone() ) return;
5494 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
5495 if ( !fExp.More() ) return;
5497 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5498 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5499 if ( surf.IsNull() ) return;
5501 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5503 catch ( Standard_Failure )
5508 //================================================================================
5510 * \brief Put nodes of a curved FACE to its offset surface
5512 //================================================================================
5514 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5516 vector< _EdgesOnShape* >& eosC1,
5520 _EdgesOnShape * eof = & eos;
5521 if ( eos.ShapeType() != TopAbs_FACE ) // eos is a boundary of C1 FACE, look for the FACE eos
5524 for ( size_t i = 0; i < eosC1.size() && !eof; ++i )
5526 if ( eosC1[i]->_offsetSurf.IsNull() ||
5527 eosC1[i]->ShapeType() != TopAbs_FACE ||
5528 eosC1[i]->_edgeForOffset == 0 ||
5529 eosC1[i]->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5531 if ( SMESH_MesherHelper::IsSubShape( eos._shape, eosC1[i]->_shape ))
5536 eof->_offsetSurf.IsNull() ||
5537 eof->ShapeType() != TopAbs_FACE ||
5538 eof->_edgeForOffset == 0 ||
5539 eof->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5542 double preci = BRep_Tool::Tolerance( TopoDS::Face( eof->_shape )), vol;
5543 for ( size_t i = 0; i < eos._edges.size(); ++i )
5545 _LayerEdge* edge = eos._edges[i];
5546 edge->Unset( _LayerEdge::MARKED );
5547 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5549 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5551 if ( !edge->Is( _LayerEdge::UPD_NORMAL_CONV ))
5554 else if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5557 int nbBlockedAround = 0;
5558 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5559 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5560 if ( nbBlockedAround > 1 )
5563 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5564 gp_Pnt2d uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5565 if ( eof->_offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5566 edge->_curvature->_uv = uv;
5567 if ( eof->_offsetSurf->Gap() < 10 * preci ) continue; // same pos
5569 gp_XYZ newP = eof->_offsetSurf->Value( uv ).XYZ();
5570 gp_XYZ prevP = edge->PrevCheckPos();
5573 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5575 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5579 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5580 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5581 edge->_pos.back() = newP;
5583 edge->Set( _LayerEdge::MARKED );
5584 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5586 edge->_normal = ( newP - prevP ).Normalized();
5594 // dumpMove() for debug
5596 for ( ; i < eos._edges.size(); ++i )
5597 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5599 if ( i < eos._edges.size() )
5601 dumpFunction(SMESH_Comment("putOnOffsetSurface_S") << eos._shapeID
5602 << "_InfStep" << infStep << "_" << smooStep );
5603 for ( ; i < eos._edges.size(); ++i )
5605 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5606 dumpMove( eos._edges[i]->_nodes.back() );
5612 _ConvexFace* cnvFace;
5613 if ( moveAll != _LayerEdge::UPD_NORMAL_CONV &&
5614 eos.ShapeType() == TopAbs_FACE &&
5615 (cnvFace = eos.GetData().GetConvexFace( eos._shapeID )) &&
5616 !cnvFace->_normalsFixedOnBorders )
5618 // put on the surface nodes built on FACE boundaries
5619 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5620 while ( smIt->more() )
5622 SMESH_subMesh* sm = smIt->next();
5623 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5624 if ( !subEOS->_sWOL.IsNull() ) continue;
5625 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5627 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::UPD_NORMAL_CONV );
5629 cnvFace->_normalsFixedOnBorders = true;
5633 //================================================================================
5635 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5636 * _LayerEdge's to be in a consequent order
5638 //================================================================================
5640 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5642 SMESH_MesherHelper& helper)
5644 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5646 TopLoc_Location loc; double f,l;
5648 Handle(Geom_Line) line;
5649 Handle(Geom_Circle) circle;
5650 bool isLine, isCirc;
5651 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5653 // check if the EDGE is a line
5654 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5655 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5656 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5658 line = Handle(Geom_Line)::DownCast( curve );
5659 circle = Handle(Geom_Circle)::DownCast( curve );
5660 isLine = (!line.IsNull());
5661 isCirc = (!circle.IsNull());
5663 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5665 isLine = SMESH_Algo::IsStraight( E );
5668 line = new Geom_Line( gp::OX() ); // only type does matter
5670 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5675 else //////////////////////////////////////////////////////////////////////// 2D case
5677 if ( !eos._isRegularSWOL ) // 23190
5680 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5682 // check if the EDGE is a line
5683 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5684 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5685 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5687 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5688 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5689 isLine = (!line2d.IsNull());
5690 isCirc = (!circle2d.IsNull());
5692 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5695 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5696 while ( nIt->more() )
5697 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5698 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5700 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5701 for ( int i = 0; i < 2 && !isLine; ++i )
5702 isLine = ( size.Coord( i+1 ) <= lineTol );
5704 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5710 line = new Geom_Line( gp::OX() ); // only type does matter
5714 gp_Pnt2d p = circle2d->Location();
5715 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
5716 circle = new Geom_Circle( ax, 1.); // only center position does matter
5725 return Handle(Geom_Curve)();
5728 //================================================================================
5730 * \brief Smooth edges on EDGE
5732 //================================================================================
5734 bool _Smoother1D::Perform(_SolidData& data,
5735 Handle(ShapeAnalysis_Surface)& surface,
5736 const TopoDS_Face& F,
5737 SMESH_MesherHelper& helper )
5739 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
5742 findEdgesToSmooth();
5744 return smoothAnalyticEdge( data, surface, F, helper );
5746 return smoothComplexEdge ( data, surface, F, helper );
5749 //================================================================================
5751 * \brief Find edges to smooth
5753 //================================================================================
5755 void _Smoother1D::findEdgesToSmooth()
5757 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
5758 for ( int iEnd = 0; iEnd < 2; ++iEnd )
5759 if ( leOnV[iEnd]->Is( _LayerEdge::NORMAL_UPDATED ))
5760 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
5762 _eToSmooth[0].first = _eToSmooth[0].second = 0;
5764 for ( size_t i = 0; i < _eos.size(); ++i )
5766 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
5768 if ( needSmoothing( _leOnV[0]._cosin,
5769 _eos[i]->_len * leOnV[0]->_lenFactor, _curveLen * _leParams[i] ) ||
5772 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
5776 _eToSmooth[0].second = i+1;
5779 _eToSmooth[1].first = _eToSmooth[1].second = _eos.size();
5781 for ( int i = _eos.size() - 1; i >= _eToSmooth[0].second; --i )
5783 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
5785 if ( needSmoothing( _leOnV[1]._cosin,
5786 _eos[i]->_len * leOnV[1]->_lenFactor, _curveLen * ( 1.-_leParams[i] )) ||
5788 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
5792 _eToSmooth[1].first = i;
5796 //================================================================================
5798 * \brief Check if iE-th _LayerEdge needs smoothing
5800 //================================================================================
5802 bool _Smoother1D::isToSmooth( int iE )
5804 SMESH_NodeXYZ pi( _eos[iE]->_nodes[0] );
5805 SMESH_NodeXYZ p0( _eos[iE]->_2neibors->srcNode(0) );
5806 SMESH_NodeXYZ p1( _eos[iE]->_2neibors->srcNode(1) );
5807 gp_XYZ seg0 = pi - p0;
5808 gp_XYZ seg1 = p1 - pi;
5809 gp_XYZ tangent = seg0 + seg1;
5810 double tangentLen = tangent.Modulus();
5811 double segMinLen = Min( seg0.Modulus(), seg1.Modulus() );
5812 if ( tangentLen < std::numeric_limits<double>::min() )
5814 tangent /= tangentLen;
5816 for ( size_t i = 0; i < _eos[iE]->_neibors.size(); ++i )
5818 _LayerEdge* ne = _eos[iE]->_neibors[i];
5819 if ( !ne->Is( _LayerEdge::TO_SMOOTH ) ||
5820 ne->_nodes.size() < 2 ||
5821 ne->_nodes[0]->GetPosition()->GetDim() != 2 )
5823 gp_XYZ edgeVec = SMESH_NodeXYZ( ne->_nodes.back() ) - SMESH_NodeXYZ( ne->_nodes[0] );
5824 double proj = edgeVec * tangent;
5825 if ( needSmoothing( 1., proj, segMinLen ))
5831 //================================================================================
5833 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
5835 //================================================================================
5837 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
5838 Handle(ShapeAnalysis_Surface)& surface,
5839 const TopoDS_Face& F,
5840 SMESH_MesherHelper& helper)
5842 if ( !isAnalytic() ) return false;
5844 size_t iFrom = 0, iTo = _eos._edges.size();
5846 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
5848 if ( F.IsNull() ) // 3D
5850 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
5851 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
5852 //const gp_XYZ lineDir = pSrc1 - pSrc0;
5853 //_LayerEdge* vLE0 = getLEdgeOnV( 0 );
5854 //_LayerEdge* vLE1 = getLEdgeOnV( 1 );
5855 // bool shiftOnly = ( vLE0->Is( _LayerEdge::NORMAL_UPDATED ) ||
5856 // vLE0->Is( _LayerEdge::BLOCKED ) ||
5857 // vLE1->Is( _LayerEdge::NORMAL_UPDATED ) ||
5858 // vLE1->Is( _LayerEdge::BLOCKED ));
5859 for ( int iEnd = 0; iEnd < 2; ++iEnd )
5861 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
5862 if ( iFrom >= iTo ) continue;
5863 SMESH_TNodeXYZ p0( _eos[iFrom]->_2neibors->tgtNode(0) );
5864 SMESH_TNodeXYZ p1( _eos[iTo-1]->_2neibors->tgtNode(1) );
5865 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
5866 double param1 = _leParams[ iTo ];
5867 for ( size_t i = iFrom; i < iTo; ++i )
5869 _LayerEdge* edge = _eos[i];
5870 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
5871 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
5872 gp_XYZ newPos = p0 * ( 1. - param ) + p1 * param;
5874 // if ( shiftOnly || edge->Is( _LayerEdge::NORMAL_UPDATED ))
5876 // gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
5877 // double shift = ( lineDir * ( newPos - pSrc0 ) -
5878 // lineDir * ( curPos - pSrc0 ));
5879 // newPos = curPos + lineDir * shift / lineDir.SquareModulus();
5881 if ( edge->Is( _LayerEdge::BLOCKED ))
5883 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
5884 double curThick = pSrc.SquareDistance( tgtNode );
5885 double newThink = ( pSrc - newPos ).SquareModulus();
5886 if ( newThink > curThick )
5889 edge->_pos.back() = newPos;
5890 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5891 dumpMove( tgtNode );
5897 _LayerEdge* eV0 = getLEdgeOnV( 0 );
5898 _LayerEdge* eV1 = getLEdgeOnV( 1 );
5899 gp_XY uvV0 = eV0->LastUV( F, *data.GetShapeEdges( eV0 ));
5900 gp_XY uvV1 = eV1->LastUV( F, *data.GetShapeEdges( eV1 ));
5901 if ( eV0->_nodes.back() == eV1->_nodes.back() ) // closed edge
5903 int iPeriodic = helper.GetPeriodicIndex();
5904 if ( iPeriodic == 1 || iPeriodic == 2 )
5906 uvV1.SetCoord( iPeriodic, helper.GetOtherParam( uvV1.Coord( iPeriodic )));
5907 if ( uvV0.Coord( iPeriodic ) > uvV1.Coord( iPeriodic ))
5908 std::swap( uvV0, uvV1 );
5911 for ( int iEnd = 0; iEnd < 2; ++iEnd )
5913 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
5914 if ( iFrom >= iTo ) continue;
5915 _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0];
5916 _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1];
5917 gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos );
5918 gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos );
5919 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
5920 double param1 = _leParams[ iTo ];
5921 gp_XY rangeUV = uv1 - uv0;
5922 for ( size_t i = iFrom; i < iTo; ++i )
5924 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
5925 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
5926 gp_XY newUV = uv0 + param * rangeUV;
5928 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
5929 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
5930 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
5931 dumpMove( tgtNode );
5933 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
5934 pos->SetUParameter( newUV.X() );
5935 pos->SetVParameter( newUV.Y() );
5937 gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 );
5939 if ( !_eos[i]->Is( _LayerEdge::SMOOTHED ))
5941 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
5942 if ( _eos[i]->_pos.size() > 2 )
5944 // modify previous positions to make _LayerEdge less sharply bent
5945 vector<gp_XYZ>& uvVec = _eos[i]->_pos;
5946 const gp_XYZ uvShift = newUV0 - uvVec.back();
5947 const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus();
5948 int iPrev = uvVec.size() - 2;
5951 double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2;
5952 uvVec[ iPrev ] += uvShift * r;
5957 _eos[i]->_pos.back() = newUV0;
5964 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
5966 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
5967 gp_Pnt center3D = circle->Location();
5969 if ( F.IsNull() ) // 3D
5971 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
5972 return true; // closed EDGE - nothing to do
5974 // circle is a real curve of EDGE
5975 gp_Circ circ = circle->Circ();
5977 // new center is shifted along its axis
5978 const gp_Dir& axis = circ.Axis().Direction();
5979 _LayerEdge* e0 = getLEdgeOnV(0);
5980 _LayerEdge* e1 = getLEdgeOnV(1);
5981 SMESH_TNodeXYZ p0 = e0->_nodes.back();
5982 SMESH_TNodeXYZ p1 = e1->_nodes.back();
5983 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
5984 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
5985 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
5987 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
5989 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
5990 gp_Circ newCirc( newAxis, newRadius );
5991 gp_Vec vecC1 ( newCenter, p1 );
5993 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
5997 for ( size_t i = 0; i < _eos.size(); ++i )
5999 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6000 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6001 double u = uLast * _leParams[i];
6002 gp_Pnt p = ElCLib::Value( u, newCirc );
6003 _eos._edges[i]->_pos.back() = p.XYZ();
6005 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6006 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6007 dumpMove( tgtNode );
6013 const gp_XY center( center3D.X(), center3D.Y() );
6015 _LayerEdge* e0 = getLEdgeOnV(0);
6016 _LayerEdge* eM = _eos._edges[ 0 ];
6017 _LayerEdge* e1 = getLEdgeOnV(1);
6018 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
6019 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
6020 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
6021 gp_Vec2d vec0( center, uv0 );
6022 gp_Vec2d vecM( center, uvM );
6023 gp_Vec2d vec1( center, uv1 );
6024 double uLast = vec0.Angle( vec1 ); // -PI - +PI
6025 double uMidl = vec0.Angle( vecM );
6026 if ( uLast * uMidl <= 0. )
6027 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
6028 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
6030 gp_Ax2d axis( center, vec0 );
6031 gp_Circ2d circ( axis, radius );
6032 for ( size_t i = 0; i < _eos.size(); ++i )
6034 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6035 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6036 double newU = uLast * _leParams[i];
6037 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
6038 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
6040 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6041 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6042 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6043 dumpMove( tgtNode );
6045 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
6046 pos->SetUParameter( newUV.X() );
6047 pos->SetVParameter( newUV.Y() );
6049 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6058 //================================================================================
6060 * \brief smooth _LayerEdge's on a an EDGE
6062 //================================================================================
6064 bool _Smoother1D::smoothComplexEdge( _SolidData& data,
6065 Handle(ShapeAnalysis_Surface)& surface,
6066 const TopoDS_Face& F,
6067 SMESH_MesherHelper& helper)
6069 if ( _offPoints.empty() )
6072 // ----------------------------------------------
6073 // move _offPoints along normals of _LayerEdge's
6074 // ----------------------------------------------
6076 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6077 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED ))
6078 _leOnV[0]._normal = getNormalNormal( e[0]->_normal, _edgeDir[0] );
6079 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED ))
6080 _leOnV[1]._normal = getNormalNormal( e[1]->_normal, _edgeDir[1] );
6081 _leOnV[0]._len = e[0]->_len;
6082 _leOnV[1]._len = e[1]->_len;
6083 for ( size_t i = 0; i < _offPoints.size(); i++ )
6085 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6086 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6087 const double w0 = _offPoints[i]._2edges._wgt[0];
6088 const double w1 = _offPoints[i]._2edges._wgt[1];
6089 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
6090 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6091 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
6092 if ( e0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6093 e1->Is( _LayerEdge::NORMAL_UPDATED ))
6094 avgNorm = getNormalNormal( avgNorm, _offPoints[i]._edgeDir );
6096 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
6097 _offPoints[i]._len = avgLen;
6101 if ( !surface.IsNull() ) // project _offPoints to the FACE
6103 fTol = 100 * BRep_Tool::Tolerance( F );
6104 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
6106 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
6107 //if ( surface->Gap() < 0.5 * segLen )
6108 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
6110 for ( size_t i = 1; i < _offPoints.size(); ++i )
6112 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
6113 //if ( surface->Gap() < 0.5 * segLen )
6114 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
6118 // -----------------------------------------------------------------
6119 // project tgt nodes of extreme _LayerEdge's to the offset segments
6120 // -----------------------------------------------------------------
6122 const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED;
6123 if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0;
6124 if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2;
6126 gp_Pnt pExtreme[2], pProj[2];
6127 bool isProjected[2];
6128 for ( int is2nd = 0; is2nd < 2; ++is2nd )
6130 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
6131 int i = _iSeg[ is2nd ];
6132 int di = is2nd ? -1 : +1;
6133 bool & projected = isProjected[ is2nd ];
6135 double uOnSeg, distMin = Precision::Infinite(), dist, distPrev = 0;
6138 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
6139 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
6140 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude(); // param [0,1] along v01
6141 projected = ( Abs( uOnSeg - 0.5 ) <= 0.5 );
6142 dist = pExtreme[ is2nd ].SquareDistance( _offPoints[ i + ( uOnSeg > 0.5 )]._xyz );
6143 if ( dist < distMin || projected )
6146 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
6149 else if ( dist > distPrev )
6151 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
6157 while ( !projected &&
6158 i >= 0 && i+1 < (int)_offPoints.size() );
6162 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
6165 _iSeg[1] = _offPoints.size()-2;
6166 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
6171 if ( _iSeg[0] > _iSeg[1] )
6173 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
6177 // adjust length of extreme LE (test viscous_layers_01/B7)
6178 gp_Vec vDiv0( pExtreme[0], pProj[0] );
6179 gp_Vec vDiv1( pExtreme[1], pProj[1] );
6180 double d0 = vDiv0.Magnitude();
6181 double d1 = isProjected[1] ? vDiv1.Magnitude() : 0;
6182 if ( e[0]->Is( _LayerEdge::BLOCKED )) {
6183 if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0;
6184 else e[0]->_len -= d0;
6186 if ( e[1]->Is( _LayerEdge::BLOCKED )) {
6187 if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1;
6188 else e[1]->_len -= d1;
6191 // ---------------------------------------------------------------------------------
6192 // compute normalized length of the offset segments located between the projections
6193 // ---------------------------------------------------------------------------------
6195 // temporary replace extreme _offPoints by pExtreme
6196 gp_XYZ opXYZ[2] = { _offPoints[ _iSeg[0] ]._xyz,
6197 _offPoints[ _iSeg[1]+1 ]._xyz };
6198 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
6199 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
6201 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
6202 vector< double > len( nbSeg + 1 );
6204 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
6205 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
6207 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
6209 // if ( isProjected[ 1 ])
6210 // len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6212 // len[ nbSeg ] += pExtreme[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6214 double fullLen = len.back() - d0 - d1;
6215 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
6216 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
6218 // -------------------------------------------------------------
6219 // distribute tgt nodes of _LayerEdge's between the projections
6220 // -------------------------------------------------------------
6223 for ( size_t i = 0; i < _eos.size(); ++i )
6225 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6226 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6227 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
6229 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
6230 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
6231 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
6233 if ( surface.IsNull() )
6235 _eos[i]->_pos.back() = p;
6237 else // project a new node position to a FACE
6239 gp_Pnt2d uv ( _eos[i]->_pos.back().X(), _eos[i]->_pos.back().Y() );
6240 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
6242 p = surface->Value( uv2 ).XYZ();
6243 _eos[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
6245 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6246 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6247 dumpMove( tgtNode );
6250 _offPoints[ _iSeg[0] ]._xyz = opXYZ[0];
6251 _offPoints[ _iSeg[1]+1 ]._xyz = opXYZ[1];
6256 //================================================================================
6258 * \brief Prepare for smoothing
6260 //================================================================================
6262 void _Smoother1D::prepare(_SolidData& data)
6264 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
6265 _curveLen = SMESH_Algo::EdgeLength( E );
6267 // sort _LayerEdge's by position on the EDGE
6268 data.SortOnEdge( E, _eos._edges );
6270 // compute normalized param of _eos._edges on EDGE
6271 _leParams.resize( _eos._edges.size() + 1 );
6274 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
6276 for ( size_t i = 0; i < _eos._edges.size(); ++i )
6278 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
6279 curLen = p.Distance( pPrev );
6280 _leParams[i+1] = _leParams[i] + curLen;
6283 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
6284 for ( size_t i = 0; i < _leParams.size()-1; ++i )
6285 _leParams[i] = _leParams[i+1] / fullLen;
6286 _leParams.back() = 1.;
6289 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6291 // get cosin to use in findEdgesToSmooth()
6292 _edgeDir[0] = getEdgeDir( E, leOnV[0]->_nodes[0], data.GetHelper() );
6293 _edgeDir[1] = getEdgeDir( E, leOnV[1]->_nodes[0], data.GetHelper() );
6294 _leOnV[0]._cosin = Abs( leOnV[0]->_cosin );
6295 _leOnV[1]._cosin = Abs( leOnV[1]->_cosin );
6296 if ( _eos._sWOL.IsNull() ) // 3D
6297 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6298 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6303 // divide E to have offset segments with low deflection
6304 BRepAdaptor_Curve c3dAdaptor( E );
6305 const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2]*sin(p1p2,p1pM)
6306 const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2)
6307 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
6308 if ( discret.NbPoints() <= 2 )
6310 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
6314 const double u0 = c3dAdaptor.FirstParameter();
6315 gp_Pnt p; gp_Vec tangent;
6316 if ( discret.NbPoints() >= (int) _eos.size() + 2 )
6318 _offPoints.resize( discret.NbPoints() );
6319 for ( size_t i = 0; i < _offPoints.size(); i++ )
6321 double u = discret.Parameter( i+1 );
6322 c3dAdaptor.D1( u, p, tangent );
6323 _offPoints[i]._xyz = p.XYZ();
6324 _offPoints[i]._edgeDir = tangent.XYZ();
6325 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6330 std::vector< double > params( _eos.size() + 2 );
6332 params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] );
6333 params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] );
6334 for ( size_t i = 0; i < _eos.size(); i++ )
6335 params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] );
6337 if ( params[1] > params[ _eos.size() ] )
6338 std::reverse( params.begin() + 1, params.end() - 1 );
6340 _offPoints.resize( _eos.size() + 2 );
6341 for ( size_t i = 0; i < _offPoints.size(); i++ )
6343 const double u = params[i];
6344 c3dAdaptor.D1( u, p, tangent );
6345 _offPoints[i]._xyz = p.XYZ();
6346 _offPoints[i]._edgeDir = tangent.XYZ();
6347 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6352 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
6353 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
6354 _2NearEdges tmp2edges;
6355 tmp2edges._edges[1] = _eos._edges[0];
6356 _leOnV[0]._2neibors = & tmp2edges;
6357 _leOnV[0]._nodes = leOnV[0]->_nodes;
6358 _leOnV[1]._nodes = leOnV[1]->_nodes;
6359 _LayerEdge* eNext, *ePrev = & _leOnV[0];
6360 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
6362 // find _LayerEdge's located before and after an offset point
6363 // (_eos._edges[ iLE ] is next after ePrev)
6364 while ( iLE < _eos._edges.size() && _offPoints[i]._param > _leParams[ iLE ] )
6365 ePrev = _eos._edges[ iLE++ ];
6366 eNext = ePrev->_2neibors->_edges[1];
6368 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
6369 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
6370 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
6371 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
6374 // replace _LayerEdge's on VERTEX by _leOnV in _offPoints._2edges
6375 for ( size_t i = 0; i < _offPoints.size(); i++ )
6376 if ( _offPoints[i]._2edges._edges[0] == leOnV[0] )
6377 _offPoints[i]._2edges._edges[0] = & _leOnV[0];
6379 for ( size_t i = _offPoints.size()-1; i > 0; i-- )
6380 if ( _offPoints[i]._2edges._edges[1] == leOnV[1] )
6381 _offPoints[i]._2edges._edges[1] = & _leOnV[1];
6384 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
6386 int iLBO = _offPoints.size() - 2; // last but one
6388 if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL ))
6389 _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] );
6391 _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] );
6392 if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL ))
6393 _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] );
6395 _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] );
6396 _leOnV[ 0 ]._len = 0;
6397 _leOnV[ 1 ]._len = 0;
6398 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
6399 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
6402 _iSeg[1] = _offPoints.size()-2;
6404 // initialize OffPnt::_len
6405 for ( size_t i = 0; i < _offPoints.size(); ++i )
6406 _offPoints[i]._len = 0;
6408 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
6410 _leOnV[0]._len = leOnV[0]->_len;
6411 _leOnV[1]._len = leOnV[1]->_len;
6412 for ( size_t i = 0; i < _offPoints.size(); i++ )
6414 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6415 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6416 const double w0 = _offPoints[i]._2edges._wgt[0];
6417 const double w1 = _offPoints[i]._2edges._wgt[1];
6418 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6419 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
6420 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
6421 _offPoints[i]._xyz = avgXYZ;
6422 _offPoints[i]._len = avgLen;
6427 //================================================================================
6429 * \brief return _normal of _leOnV[is2nd] normal to the EDGE
6431 //================================================================================
6433 gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal,
6434 const gp_XYZ& edgeDir)
6436 gp_XYZ cross = normal ^ edgeDir;
6437 gp_XYZ norm = edgeDir ^ cross;
6438 double size = norm.Modulus();
6440 // if ( size == 0 ) // MULTI_NORMAL _LayerEdge
6441 // return gp_XYZ( 1e-100, 1e-100, 1e-100 );
6446 //================================================================================
6448 * \brief Writes a script creating a mesh composed of _offPoints
6450 //================================================================================
6452 void _Smoother1D::offPointsToPython() const
6454 const char* fname = "/tmp/offPoints.py";
6455 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
6457 py << "import SMESH" << endl
6458 << "from salome.smesh import smeshBuilder" << endl
6459 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
6460 << "mesh = smesh.Mesh( 'offPoints' )"<<endl;
6461 for ( size_t i = 0; i < _offPoints.size(); i++ )
6463 py << "mesh.AddNode( "
6464 << _offPoints[i]._xyz.X() << ", "
6465 << _offPoints[i]._xyz.Y() << ", "
6466 << _offPoints[i]._xyz.Z() << " )" << endl;
6470 //================================================================================
6472 * \brief Sort _LayerEdge's by a parameter on a given EDGE
6474 //================================================================================
6476 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
6477 vector< _LayerEdge* >& edges)
6479 map< double, _LayerEdge* > u2edge;
6480 for ( size_t i = 0; i < edges.size(); ++i )
6481 u2edge.insert( u2edge.end(),
6482 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
6484 ASSERT( u2edge.size() == edges.size() );
6485 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
6486 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
6487 edges[i] = u2e->second;
6489 Sort2NeiborsOnEdge( edges );
6492 //================================================================================
6494 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
6496 //================================================================================
6498 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
6500 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
6502 for ( size_t i = 0; i < edges.size()-1; ++i )
6503 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
6504 edges[i]->_2neibors->reverse();
6506 const size_t iLast = edges.size() - 1;
6507 if ( edges.size() > 1 &&
6508 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
6509 edges[iLast]->_2neibors->reverse();
6512 //================================================================================
6514 * \brief Return _EdgesOnShape* corresponding to the shape
6516 //================================================================================
6518 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
6520 if ( shapeID < (int)_edgesOnShape.size() &&
6521 _edgesOnShape[ shapeID ]._shapeID == shapeID )
6522 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
6524 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
6525 if ( _edgesOnShape[i]._shapeID == shapeID )
6526 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
6531 //================================================================================
6533 * \brief Return _EdgesOnShape* corresponding to the shape
6535 //================================================================================
6537 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
6539 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
6540 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
6543 //================================================================================
6545 * \brief Prepare data of the _LayerEdge for smoothing on FACE
6547 //================================================================================
6549 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
6551 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
6553 set< TGeomID > vertices;
6555 if ( eos->ShapeType() == TopAbs_FACE )
6557 // check FACE concavity and get concave VERTEXes
6558 F = TopoDS::Face( eos->_shape );
6559 if ( isConcave( F, helper, &vertices ))
6560 _concaveFaces.insert( eos->_shapeID );
6562 // set eos._eosConcaVer
6563 eos->_eosConcaVer.clear();
6564 eos->_eosConcaVer.reserve( vertices.size() );
6565 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
6567 _EdgesOnShape* eov = GetShapeEdges( *v );
6568 if ( eov && eov->_edges.size() == 1 )
6570 eos->_eosConcaVer.push_back( eov );
6571 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
6572 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
6576 // SetSmooLen() to _LayerEdge's on FACE
6577 // for ( size_t i = 0; i < eos->_edges.size(); ++i )
6579 // eos->_edges[i]->SetSmooLen( Precision::Infinite() );
6581 // SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6582 // while ( smIt->more() ) // loop on sub-shapes of the FACE
6584 // _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
6585 // if ( !eoe ) continue;
6587 // vector<_LayerEdge*>& eE = eoe->_edges;
6588 // for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
6590 // if ( eE[iE]->_cosin <= theMinSmoothCosin )
6593 // SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
6594 // while ( segIt->more() )
6596 // const SMDS_MeshElement* seg = segIt->next();
6597 // if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
6599 // if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
6600 // continue; // not to check a seg twice
6601 // for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
6603 // _LayerEdge* eN = eE[iE]->_neibors[iN];
6604 // if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
6606 // double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
6607 // double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
6608 // eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
6609 // eN->Set( _LayerEdge::NEAR_BOUNDARY );
6614 } // if ( eos->ShapeType() == TopAbs_FACE )
6616 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6618 eos->_edges[i]->_smooFunction = 0;
6619 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
6621 bool isCurved = false;
6622 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6624 _LayerEdge* edge = eos->_edges[i];
6626 // get simplices sorted
6627 _Simplex::SortSimplices( edge->_simplices );
6629 // smoothing function
6630 edge->ChooseSmooFunction( vertices, _n2eMap );
6633 double avgNormProj = 0, avgLen = 0;
6634 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
6636 _Simplex& s = edge->_simplices[iS];
6638 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
6639 avgNormProj += edge->_normal * vec;
6640 avgLen += vec.Modulus();
6641 if ( substituteSrcNodes )
6643 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
6644 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
6647 avgNormProj /= edge->_simplices.size();
6648 avgLen /= edge->_simplices.size();
6649 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
6651 edge->Set( _LayerEdge::SMOOTHED_C1 );
6653 SMDS_FacePositionPtr fPos = edge->_nodes[0]->GetPosition();
6655 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
6656 fPos = edge->_simplices[iS]._nPrev->GetPosition();
6658 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
6662 // prepare for putOnOffsetSurface()
6663 if (( eos->ShapeType() == TopAbs_FACE ) &&
6664 ( isCurved || !eos->_eosConcaVer.empty() ))
6666 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
6667 eos->_edgeForOffset = 0;
6669 double maxCosin = -1;
6670 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
6672 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
6673 if ( !eoe || eoe->_edges.empty() ) continue;
6675 vector<_LayerEdge*>& eE = eoe->_edges;
6676 _LayerEdge* e = eE[ eE.size() / 2 ];
6677 if ( e->_cosin > maxCosin )
6679 eos->_edgeForOffset = e;
6680 maxCosin = e->_cosin;
6686 //================================================================================
6688 * \brief Add faces for smoothing
6690 //================================================================================
6692 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
6693 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
6695 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
6696 for ( ; eos != eosToSmooth.end(); ++eos )
6698 if ( !*eos || (*eos)->_toSmooth ) continue;
6700 (*eos)->_toSmooth = true;
6702 if ( (*eos)->ShapeType() == TopAbs_FACE )
6704 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
6705 (*eos)->_toSmooth = true;
6709 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
6710 if ( edgesNoAnaSmooth )
6711 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
6713 if ( (*eos)->_edgeSmoother )
6714 (*eos)->_edgeSmoother->_anaCurve.Nullify();
6718 //================================================================================
6720 * \brief Limit _LayerEdge::_maxLen according to local curvature
6722 //================================================================================
6724 void _ViscousBuilder::limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper )
6726 // find intersection of neighbor _LayerEdge's to limit _maxLen
6727 // according to local curvature (IPAL52648)
6729 // This method must be called after findCollisionEdges() where _LayerEdge's
6730 // get _lenFactor initialized in the case of eos._hyp.IsOffsetMethod()
6732 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6734 _EdgesOnShape& eosI = data._edgesOnShape[iS];
6735 if ( eosI._edges.empty() ) continue;
6736 if ( !eosI._hyp.ToSmooth() )
6738 for ( size_t i = 0; i < eosI._edges.size(); ++i )
6740 _LayerEdge* eI = eosI._edges[i];
6741 for ( size_t iN = 0; iN < eI->_neibors.size(); ++iN )
6743 _LayerEdge* eN = eI->_neibors[iN];
6744 if ( eI->_nodes[0]->GetID() < eN->_nodes[0]->GetID() ) // treat this pair once
6746 _EdgesOnShape* eosN = data.GetShapeEdges( eN );
6747 limitMaxLenByCurvature( eI, eN, eosI, *eosN, eosI._hyp.ToSmooth() );
6752 else if ( eosI.ShapeType() == TopAbs_EDGE )
6754 const TopoDS_Edge& E = TopoDS::Edge( eosI._shape );
6755 if ( SMESH_Algo::IsStraight( E, /*degenResult=*/true )) continue;
6757 _LayerEdge* e0 = eosI._edges[0];
6758 for ( size_t i = 1; i < eosI._edges.size(); ++i )
6760 _LayerEdge* eI = eosI._edges[i];
6761 limitMaxLenByCurvature( eI, e0, eosI, eosI, eosI._hyp.ToSmooth() );
6768 //================================================================================
6770 * \brief Limit _LayerEdge::_maxLen according to local curvature
6772 //================================================================================
6774 void _ViscousBuilder::limitMaxLenByCurvature( _LayerEdge* e1,
6776 _EdgesOnShape& eos1,
6777 _EdgesOnShape& eos2,
6778 const bool isSmoothable )
6780 if (( e1->_nodes[0]->GetPosition()->GetDim() !=
6781 e2->_nodes[0]->GetPosition()->GetDim() ) &&
6782 ( e1->_cosin < 0.75 ))
6783 return; // angle > 90 deg at e1
6785 gp_XYZ plnNorm = e1->_normal ^ e2->_normal;
6786 double norSize = plnNorm.SquareModulus();
6787 if ( norSize < std::numeric_limits<double>::min() )
6788 return; // parallel normals
6790 // find closest points of skew _LayerEdge's
6791 SMESH_TNodeXYZ src1( e1->_nodes[0] ), src2( e2->_nodes[0] );
6792 gp_XYZ dir12 = src2 - src1;
6793 gp_XYZ perp1 = e1->_normal ^ plnNorm;
6794 gp_XYZ perp2 = e2->_normal ^ plnNorm;
6795 double dot1 = perp2 * e1->_normal;
6796 double dot2 = perp1 * e2->_normal;
6797 double u1 = ( perp2 * dir12 ) / dot1;
6798 double u2 = - ( perp1 * dir12 ) / dot2;
6799 if ( u1 > 0 && u2 > 0 )
6801 double ovl = ( u1 * e1->_normal * dir12 -
6802 u2 * e2->_normal * dir12 ) / dir12.SquareModulus();
6803 if ( ovl > theSmoothThickToElemSizeRatio )
6805 const double coef = 0.75;
6806 e1->SetMaxLen( Min( e1->_maxLen, coef * u1 / e1->_lenFactor ));
6807 e2->SetMaxLen( Min( e2->_maxLen, coef * u2 / e2->_lenFactor ));
6812 //================================================================================
6814 * \brief Fill data._collisionEdges
6816 //================================================================================
6818 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
6820 data._collisionEdges.clear();
6822 // set the full thickness of the layers to LEs
6823 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6825 _EdgesOnShape& eos = data._edgesOnShape[iS];
6826 if ( eos._edges.empty() ) continue;
6827 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
6828 if ( !eos._sWOL.IsNull() ) continue; // PAL23566
6830 for ( size_t i = 0; i < eos._edges.size(); ++i )
6832 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
6833 double maxLen = eos._edges[i]->_maxLen;
6834 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
6835 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
6836 eos._edges[i]->_maxLen = maxLen;
6840 // make temporary quadrangles got by extrusion of
6841 // mesh edges along _LayerEdge._normal's
6843 vector< const SMDS_MeshElement* > tmpFaces;
6845 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6847 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6848 if ( eos.ShapeType() != TopAbs_EDGE )
6850 if ( eos._edges.empty() )
6852 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
6853 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
6854 while ( smIt->more() )
6855 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
6856 if ( eov->_edges.size() == 1 )
6857 edge[ bool( edge[0]) ] = eov->_edges[0];
6861 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
6862 tmpFaces.push_back( f );
6865 for ( size_t i = 0; i < eos._edges.size(); ++i )
6867 _LayerEdge* edge = eos._edges[i];
6868 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
6870 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
6871 if ( src2->GetPosition()->GetDim() > 0 &&
6872 src2->GetID() < edge->_nodes[0]->GetID() )
6873 continue; // avoid using same segment twice
6875 // a _LayerEdge containing tgt2
6876 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
6878 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
6879 tmpFaces.push_back( f );
6884 // Find _LayerEdge's intersecting tmpFaces.
6886 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
6888 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
6889 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
6891 double dist1, dist2, segLen, eps = 0.5;
6892 _CollisionEdges collEdges;
6893 vector< const SMDS_MeshElement* > suspectFaces;
6894 const double angle45 = Cos( 45. * M_PI / 180. );
6896 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
6898 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
6899 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
6901 // find sub-shapes whose VL can influence VL on eos
6902 set< TGeomID > neighborShapes;
6903 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
6904 while ( const TopoDS_Shape* face = fIt->next() )
6906 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
6907 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
6909 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6910 while ( subIt->more() )
6911 neighborShapes.insert( subIt->next()->GetId() );
6914 if ( eos.ShapeType() == TopAbs_VERTEX )
6916 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
6917 while ( const TopoDS_Shape* edge = eIt->next() )
6918 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
6920 // find intersecting _LayerEdge's
6921 for ( size_t i = 0; i < eos._edges.size(); ++i )
6923 if ( eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL )) continue;
6924 _LayerEdge* edge = eos._edges[i];
6925 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
6928 gp_Vec eSegDir0, eSegDir1;
6929 if ( edge->IsOnEdge() )
6931 SMESH_TNodeXYZ eP( edge->_nodes[0] );
6932 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
6933 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
6935 suspectFaces.clear();
6936 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len * 2,
6937 SMDSAbs_Face, suspectFaces );
6938 collEdges._intEdges.clear();
6939 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
6941 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
6942 if ( f->_le1 == edge || f->_le2 == edge ) continue;
6943 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
6944 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
6945 if ( edge->IsOnEdge() ) {
6946 if ( edge->_2neibors->include( f->_le1 ) ||
6947 edge->_2neibors->include( f->_le2 )) continue;
6950 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
6951 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
6953 dist1 = dist2 = Precision::Infinite();
6954 if ( !edge->SegTriaInter( lastSegment, f->n(0), f->n(1), f->n(2), dist1, eps ))
6955 dist1 = Precision::Infinite();
6956 if ( !edge->SegTriaInter( lastSegment, f->n(3), f->n(2), f->n(0), dist2, eps ))
6957 dist2 = Precision::Infinite();
6958 if (( dist1 > segLen ) && ( dist2 > segLen ))
6961 if ( edge->IsOnEdge() )
6963 // skip perpendicular EDGEs
6964 gp_Vec fSegDir = SMESH_TNodeXYZ( f->n(0) ) - SMESH_TNodeXYZ( f->n(3) );
6965 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle45 ) ||
6966 isLessAngle( eSegDir1, fSegDir, angle45 ) ||
6967 isLessAngle( eSegDir0, fSegDir.Reversed(), angle45 ) ||
6968 isLessAngle( eSegDir1, fSegDir.Reversed(), angle45 ));
6973 // either limit inflation of edges or remember them for updating _normal
6974 // double dot = edge->_normal * f->GetDir();
6977 collEdges._intEdges.push_back( f->_le1 );
6978 collEdges._intEdges.push_back( f->_le2 );
6982 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
6983 // edge->SetMaxLen( Min( shortLen, edge->_maxLen ));
6987 if ( !collEdges._intEdges.empty() )
6989 collEdges._edge = edge;
6990 data._collisionEdges.push_back( collEdges );
6995 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
6998 // restore the zero thickness
6999 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7001 _EdgesOnShape& eos = data._edgesOnShape[iS];
7002 if ( eos._edges.empty() ) continue;
7003 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7005 for ( size_t i = 0; i < eos._edges.size(); ++i )
7007 eos._edges[i]->InvalidateStep( 1, eos );
7008 eos._edges[i]->_len = 0;
7013 //================================================================================
7015 * \brief Find _LayerEdge's located on boundary of a convex FACE whose normal
7016 * will be updated at each inflation step
7018 //================================================================================
7020 void _ViscousBuilder::findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
7022 SMESH_MesherHelper& helper )
7024 const TGeomID convFaceID = getMeshDS()->ShapeToIndex( convFace._face );
7025 const double preci = BRep_Tool::Tolerance( convFace._face );
7026 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( convFace._face );
7028 bool edgesToUpdateFound = false;
7030 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7031 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7033 _EdgesOnShape& eos = * id2eos->second;
7034 if ( !eos._sWOL.IsNull() ) continue;
7035 if ( !eos._hyp.ToSmooth() ) continue;
7036 for ( size_t i = 0; i < eos._edges.size(); ++i )
7038 _LayerEdge* ledge = eos._edges[ i ];
7039 if ( ledge->Is( _LayerEdge::UPD_NORMAL_CONV )) continue; // already checked
7040 if ( ledge->Is( _LayerEdge::MULTI_NORMAL )) continue; // not inflatable
7042 gp_XYZ tgtPos = ( SMESH_NodeXYZ( ledge->_nodes[0] ) +
7043 ledge->_normal * ledge->_lenFactor * ledge->_maxLen );
7045 // the normal must be updated if distance from tgtPos to surface is less than
7048 // find an initial UV for search of a projection of tgtPos to surface
7049 const SMDS_MeshNode* nodeInFace = 0;
7050 SMDS_ElemIteratorPtr fIt = ledge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7051 while ( fIt->more() && !nodeInFace )
7053 const SMDS_MeshElement* f = fIt->next();
7054 if ( convFaceID != f->getshapeId() ) continue;
7056 SMDS_ElemIteratorPtr nIt = f->nodesIterator();
7057 while ( nIt->more() && !nodeInFace )
7059 const SMDS_MeshElement* n = nIt->next();
7060 if ( n->getshapeId() == convFaceID )
7061 nodeInFace = static_cast< const SMDS_MeshNode* >( n );
7066 gp_XY uv = helper.GetNodeUV( convFace._face, nodeInFace );
7069 surface->NextValueOfUV( uv, tgtPos, preci );
7070 double dist = surface->Gap();
7071 if ( dist < 0.95 * ledge->_maxLen )
7073 ledge->Set( _LayerEdge::UPD_NORMAL_CONV );
7074 if ( !ledge->_curvature ) ledge->_curvature = _Factory::NewCurvature();
7075 ledge->_curvature->_uv.SetCoord( uv.X(), uv.Y() );
7076 edgesToUpdateFound = true;
7081 if ( !convFace._isTooCurved && edgesToUpdateFound )
7083 data._convexFaces.insert( make_pair( convFaceID, convFace )).first->second;
7087 //================================================================================
7089 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
7090 * _LayerEdge's on neighbor EDGE's
7092 //================================================================================
7094 bool _ViscousBuilder::updateNormals( _SolidData& data,
7095 SMESH_MesherHelper& helper,
7099 updateNormalsOfC1Vertices( data );
7101 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
7104 // map to store new _normal and _cosin for each intersected edge
7105 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
7106 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
7107 _LayerEdge zeroEdge;
7108 zeroEdge._normal.SetCoord( 0,0,0 );
7109 zeroEdge._maxLen = Precision::Infinite();
7110 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
7112 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
7114 double segLen, dist1, dist2, dist;
7115 vector< pair< _LayerEdge*, double > > intEdgesDist;
7116 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
7118 for ( int iter = 0; iter < 5; ++iter )
7120 edge2newEdge.clear();
7122 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
7124 _CollisionEdges& ce = data._collisionEdges[iE];
7125 _LayerEdge* edge1 = ce._edge;
7126 if ( !edge1 /*|| edge1->Is( _LayerEdge::BLOCKED )*/) continue;
7127 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7128 if ( !eos1 ) continue;
7130 // detect intersections
7131 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
7132 double testLen = 1.5 * edge1->_maxLen * edge1->_lenFactor;
7134 intEdgesDist.clear();
7135 double minIntDist = Precision::Infinite();
7136 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
7138 if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7139 ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) &&
7140 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
7142 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
7143 double fact = ( 1.1 + dot * dot );
7144 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
7145 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
7146 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
7147 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
7148 dist1 = dist2 = Precision::Infinite();
7149 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pLast0, pSrc1, dist1, eps ) &&
7150 !edge1->SegTriaInter( lastSeg, pSrc1, pLast1, pLast0, dist2, eps ))
7153 if ( dist > testLen || dist <= 0 )
7156 if ( dist > testLen || dist <= 0 )
7159 // choose a closest edge
7160 gp_Pnt intP( lastSeg.Location().XYZ() + lastSeg.Direction().XYZ() * ( dist + segLen ));
7161 double d1 = intP.SquareDistance( pSrc0 );
7162 double d2 = intP.SquareDistance( pSrc1 );
7163 int iClose = i + ( d2 < d1 );
7164 _LayerEdge* edge2 = ce._intEdges[iClose];
7165 edge2->Unset( _LayerEdge::MARKED );
7167 // choose a closest edge among neighbors
7168 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
7169 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
7170 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
7172 _LayerEdge * edgeJ = intEdgesDist[j].first;
7173 if ( edge2->IsNeiborOnEdge( edgeJ ))
7175 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
7176 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
7179 intEdgesDist.push_back( make_pair( edge2, dist ));
7180 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
7182 // iClose = i + !( d2 < d1 );
7183 // intEdges.push_back( ce._intEdges[iClose] );
7184 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
7186 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist, minIntDist );
7191 // compute new _normals
7192 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
7194 _LayerEdge* edge2 = intEdgesDist[i].first;
7195 double distWgt = edge1->_len / intEdgesDist[i].second;
7196 // if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7197 // edge2->Is( _LayerEdge::BLOCKED )) continue;
7198 if ( edge2->Is( _LayerEdge::MARKED )) continue;
7199 edge2->Set( _LayerEdge::MARKED );
7202 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
7204 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7205 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7206 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7207 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7208 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
7209 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7210 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7211 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
7212 newNormal.Normalize();
7216 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
7217 if ( cos1 < theMinSmoothCosin )
7219 newCos = cos2 * sgn1;
7221 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
7223 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
7227 newCos = edge1->_cosin;
7230 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
7231 e2neIt->second._normal += distWgt * newNormal;
7232 e2neIt->second._cosin = newCos;
7233 e2neIt->second.SetMaxLen( 0.7 * minIntDist / edge1->_lenFactor );
7234 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
7235 e2neIt->second._normal += dir2;
7237 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
7238 e2neIt->second._normal += distWgt * newNormal;
7239 if ( Precision::IsInfinite( zeroEdge._maxLen ))
7241 e2neIt->second._cosin = edge2->_cosin;
7242 e2neIt->second.SetMaxLen( 1.3 * minIntDist / edge1->_lenFactor );
7244 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
7245 e2neIt->second._normal += dir1;
7249 if ( edge2newEdge.empty() )
7250 break; //return true;
7252 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
7254 // Update data of edges depending on a new _normal
7257 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7259 _LayerEdge* edge = e2neIt->first;
7260 _LayerEdge& newEdge = e2neIt->second;
7261 _EdgesOnShape* eos = data.GetShapeEdges( edge );
7262 if ( edge->Is( _LayerEdge::BLOCKED && newEdge._maxLen > edge->_len ))
7265 // Check if a new _normal is OK:
7266 newEdge._normal.Normalize();
7267 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
7269 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
7271 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7272 edge->SetMaxLen( newEdge._maxLen );
7273 edge->SetNewLength( newEdge._maxLen, *eos, helper );
7275 continue; // the new _normal is bad
7277 // the new _normal is OK
7279 // find shapes that need smoothing due to change of _normal
7280 if ( edge->_cosin < theMinSmoothCosin &&
7281 newEdge._cosin > theMinSmoothCosin )
7283 if ( eos->_sWOL.IsNull() )
7285 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7286 while ( fIt->more() )
7287 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
7289 else // edge inflates along a FACE
7291 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
7292 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE, &eos->_sWOL );
7293 while ( const TopoDS_Shape* E = eIt->next() )
7295 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ));
7296 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
7297 if ( angle < M_PI / 2 )
7298 shapesToSmooth.insert( data.GetShapeEdges( *E ));
7303 double len = edge->_len;
7304 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7305 edge->SetNormal( newEdge._normal );
7306 edge->SetCosin( newEdge._cosin );
7307 edge->SetNewLength( len, *eos, helper );
7308 edge->Set( _LayerEdge::MARKED );
7309 edge->Set( _LayerEdge::NORMAL_UPDATED );
7310 edgesNoAnaSmooth.insert( eos );
7313 // Update normals and other dependent data of not intersecting _LayerEdge's
7314 // neighboring the intersecting ones
7316 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7318 _LayerEdge* edge1 = e2neIt->first;
7319 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7320 if ( !edge1->Is( _LayerEdge::MARKED ))
7323 if ( edge1->IsOnEdge() )
7325 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
7326 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
7327 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
7330 if ( !edge1->_2neibors || !eos1->_sWOL.IsNull() )
7332 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
7334 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
7335 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
7336 continue; // j-th neighbor is also intersected
7337 _LayerEdge* prevEdge = edge1;
7338 const int nbSteps = 10;
7339 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
7341 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
7342 neighbor->Is( _LayerEdge::MARKED ))
7344 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
7345 if ( !eos ) continue;
7346 _LayerEdge* nextEdge = neighbor;
7347 if ( neighbor->_2neibors )
7350 nextEdge = neighbor->_2neibors->_edges[iNext];
7351 if ( nextEdge == prevEdge )
7352 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
7354 double r = double(step-1)/nbSteps/(iter+1);
7355 if ( !nextEdge->_2neibors )
7358 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
7359 newNorm.Normalize();
7360 if ( !isNewNormalOk( data, *neighbor, newNorm ))
7363 double len = neighbor->_len;
7364 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7365 neighbor->SetNormal( newNorm );
7366 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
7367 if ( neighbor->_2neibors )
7368 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
7369 neighbor->SetNewLength( len, *eos, helper );
7370 neighbor->Set( _LayerEdge::MARKED );
7371 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
7372 edgesNoAnaSmooth.insert( eos );
7374 if ( !neighbor->_2neibors )
7375 break; // neighbor is on VERTEX
7377 // goto the next neighbor
7378 prevEdge = neighbor;
7379 neighbor = nextEdge;
7386 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
7391 //================================================================================
7393 * \brief Check if a new normal is OK
7395 //================================================================================
7397 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
7399 const gp_XYZ& newNormal)
7401 // check a min angle between the newNormal and surrounding faces
7402 vector<_Simplex> simplices;
7403 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
7404 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
7405 double newMinDot = 1, curMinDot = 1;
7406 for ( size_t i = 0; i < simplices.size(); ++i )
7408 n1.Set( simplices[i]._nPrev );
7409 n2.Set( simplices[i]._nNext );
7410 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
7411 double normLen2 = normFace.SquareModulus();
7412 if ( normLen2 < std::numeric_limits<double>::min() )
7414 normFace /= Sqrt( normLen2 );
7415 newMinDot = Min( newNormal * normFace, newMinDot );
7416 curMinDot = Min( edge._normal * normFace, curMinDot );
7419 if ( newMinDot < 0.5 )
7421 ok = ( newMinDot >= curMinDot * 0.9 );
7422 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
7423 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
7424 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
7430 //================================================================================
7432 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
7434 //================================================================================
7436 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
7437 SMESH_MesherHelper& helper,
7439 const double stepSize )
7441 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
7442 return true; // no shapes needing smoothing
7444 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7446 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7447 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
7448 !eos._hyp.ToSmooth() ||
7449 eos.ShapeType() != TopAbs_FACE ||
7450 eos._edges.empty() )
7453 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
7454 if ( !toSmooth ) continue;
7456 for ( size_t i = 0; i < eos._edges.size(); ++i )
7458 _LayerEdge* edge = eos._edges[i];
7459 if ( !edge->Is( _LayerEdge::SMOOTHED ))
7461 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
7464 const gp_XYZ& pPrev = edge->PrevPos();
7465 const gp_XYZ& pLast = edge->_pos.back();
7466 gp_XYZ stepVec = pLast - pPrev;
7467 double realStepSize = stepVec.Modulus();
7468 if ( realStepSize < numeric_limits<double>::min() )
7471 edge->_lenFactor = realStepSize / stepSize;
7472 edge->_normal = stepVec / realStepSize;
7473 edge->Set( _LayerEdge::NORMAL_UPDATED );
7480 //================================================================================
7482 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
7484 //================================================================================
7486 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
7488 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7490 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
7491 if ( eov._eosC1.empty() ||
7492 eov.ShapeType() != TopAbs_VERTEX ||
7493 eov._edges.empty() )
7496 gp_XYZ newNorm = eov._edges[0]->_normal;
7497 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
7498 bool normChanged = false;
7500 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
7502 _EdgesOnShape* eoe = eov._eosC1[i];
7503 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
7504 const double eLen = SMESH_Algo::EdgeLength( e );
7505 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
7506 if ( oppV.IsSame( eov._shape ))
7507 oppV = SMESH_MesherHelper::IthVertex( 1, e );
7508 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
7509 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
7510 if ( eov._edges[0]->Is( _LayerEdge::BLOCKED )) continue;
7512 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
7513 if ( curThickOpp + curThick < eLen )
7516 double wgt = 2. * curThick / eLen;
7517 newNorm += wgt * eovOpp->_edges[0]->_normal;
7522 eov._edges[0]->SetNormal( newNorm.Normalized() );
7523 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
7528 //================================================================================
7530 * \brief Modify normals of _LayerEdge's on _ConvexFace's
7532 //================================================================================
7534 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
7535 SMESH_MesherHelper& helper,
7538 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
7541 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
7542 for ( ; id2face != data._convexFaces.end(); ++id2face )
7544 _ConvexFace & convFace = (*id2face).second;
7545 convFace._normalsFixedOnBorders = false; // to update at each inflation step
7547 if ( convFace._normalsFixed )
7548 continue; // already fixed
7549 if ( convFace.CheckPrisms() )
7550 continue; // nothing to fix
7552 convFace._normalsFixed = true;
7554 BRepAdaptor_Surface surface ( convFace._face, false );
7555 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
7557 // check if the convex FACE is of spherical shape
7559 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
7563 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7564 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7566 _EdgesOnShape& eos = *(id2eos->second);
7567 if ( eos.ShapeType() == TopAbs_VERTEX )
7569 _LayerEdge* ledge = eos._edges[ 0 ];
7570 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7571 centersBox.Add( center );
7573 for ( size_t i = 0; i < eos._edges.size(); ++i )
7574 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
7576 if ( centersBox.IsVoid() )
7578 debugMsg( "Error: centersBox.IsVoid()" );
7581 const bool isSpherical =
7582 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7584 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
7585 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
7589 // set _LayerEdge::_normal as average of all normals
7591 // WARNING: different density of nodes on EDGEs is not taken into account that
7592 // can lead to an improper new normal
7594 gp_XYZ avgNormal( 0,0,0 );
7596 id2eos = convFace._subIdToEOS.begin();
7597 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7599 _EdgesOnShape& eos = *(id2eos->second);
7600 // set data of _CentralCurveOnEdge
7601 if ( eos.ShapeType() == TopAbs_EDGE )
7603 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
7604 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
7605 if ( !eos._sWOL.IsNull() )
7606 ceCurve._adjFace.Nullify();
7608 ceCurve._ledges.insert( ceCurve._ledges.end(),
7609 eos._edges.begin(), eos._edges.end());
7611 // summarize normals
7612 for ( size_t i = 0; i < eos._edges.size(); ++i )
7613 avgNormal += eos._edges[ i ]->_normal;
7615 double normSize = avgNormal.SquareModulus();
7616 if ( normSize < 1e-200 )
7618 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
7621 avgNormal /= Sqrt( normSize );
7623 // compute new _LayerEdge::_cosin on EDGEs
7624 double avgCosin = 0;
7627 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7629 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
7630 if ( ceCurve._adjFace.IsNull() )
7632 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
7634 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
7635 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
7638 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
7639 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
7640 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
7646 avgCosin /= nbCosin;
7648 // set _LayerEdge::_normal = avgNormal
7649 id2eos = convFace._subIdToEOS.begin();
7650 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7652 _EdgesOnShape& eos = *(id2eos->second);
7653 if ( eos.ShapeType() != TopAbs_EDGE )
7654 for ( size_t i = 0; i < eos._edges.size(); ++i )
7655 eos._edges[ i ]->_cosin = avgCosin;
7657 for ( size_t i = 0; i < eos._edges.size(); ++i )
7659 eos._edges[ i ]->SetNormal( avgNormal );
7660 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
7664 else // if ( isSpherical )
7666 // We suppose that centers of curvature at all points of the FACE
7667 // lie on some curve, let's call it "central curve". For all _LayerEdge's
7668 // having a common center of curvature we define the same new normal
7669 // as a sum of normals of _LayerEdge's on EDGEs among them.
7671 // get all centers of curvature for each EDGE
7673 helper.SetSubShape( convFace._face );
7674 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
7676 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
7677 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
7679 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
7681 // set adjacent FACE
7682 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
7684 // get _LayerEdge's of the EDGE
7685 TGeomID edgeID = meshDS->ShapeToIndex( edge );
7686 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
7687 if ( !eos || eos->_edges.empty() )
7689 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
7690 for ( int iV = 0; iV < 2; ++iV )
7692 TopoDS_Vertex v = helper.IthVertex( iV, edge );
7693 TGeomID vID = meshDS->ShapeToIndex( v );
7694 eos = data.GetShapeEdges( vID );
7695 vertexLEdges[ iV ] = eos->_edges[ 0 ];
7697 edgeLEdge = &vertexLEdges[0];
7698 edgeLEdgeEnd = edgeLEdge + 2;
7700 centerCurves[ iE ]._adjFace.Nullify();
7704 if ( ! eos->_toSmooth )
7705 data.SortOnEdge( edge, eos->_edges );
7706 edgeLEdge = &eos->_edges[ 0 ];
7707 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
7708 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
7709 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
7711 if ( ! eos->_sWOL.IsNull() )
7712 centerCurves[ iE ]._adjFace.Nullify();
7715 // Get curvature centers
7719 if ( edgeLEdge[0]->IsOnEdge() &&
7720 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
7722 centerCurves[ iE ].Append( center, vertexLEdges[0] );
7723 centersBox.Add( center );
7725 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
7726 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
7727 { // EDGE or VERTEXes
7728 centerCurves[ iE ].Append( center, *edgeLEdge );
7729 centersBox.Add( center );
7731 if ( edgeLEdge[-1]->IsOnEdge() &&
7732 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
7734 centerCurves[ iE ].Append( center, vertexLEdges[1] );
7735 centersBox.Add( center );
7737 centerCurves[ iE ]._isDegenerated =
7738 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7740 } // loop on EDGES of convFace._face to set up data of centerCurves
7742 // Compute new normals for _LayerEdge's on EDGEs
7744 double avgCosin = 0;
7747 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
7749 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
7750 if ( ceCurve._isDegenerated )
7752 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
7753 vector< gp_XYZ > & newNormals = ceCurve._normals;
7754 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
7757 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
7760 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
7762 if ( isOK && !ceCurve._adjFace.IsNull() )
7764 // compute new _LayerEdge::_cosin
7765 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
7766 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
7769 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
7770 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
7771 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
7777 // set new normals to _LayerEdge's of NOT degenerated central curves
7778 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7780 if ( centerCurves[ iE ]._isDegenerated )
7782 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
7784 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
7785 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
7788 // set new normals to _LayerEdge's of degenerated central curves
7789 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7791 if ( !centerCurves[ iE ]._isDegenerated ||
7792 centerCurves[ iE ]._ledges.size() < 3 )
7794 // new normal is an average of new normals at VERTEXes that
7795 // was computed on non-degenerated _CentralCurveOnEdge's
7796 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
7797 centerCurves[ iE ]._ledges.back ()->_normal );
7798 double sz = newNorm.Modulus();
7802 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
7803 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
7804 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
7806 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
7807 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
7808 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
7812 // Find new normals for _LayerEdge's based on FACE
7815 avgCosin /= nbCosin;
7816 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
7817 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
7818 if ( id2eos != convFace._subIdToEOS.end() )
7822 _EdgesOnShape& eos = * ( id2eos->second );
7823 for ( size_t i = 0; i < eos._edges.size(); ++i )
7825 _LayerEdge* ledge = eos._edges[ i ];
7826 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7828 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
7830 iE = iE % centerCurves.size();
7831 if ( centerCurves[ iE ]._isDegenerated )
7833 newNorm.SetCoord( 0,0,0 );
7834 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
7836 ledge->SetNormal( newNorm );
7837 ledge->_cosin = avgCosin;
7838 ledge->Set( _LayerEdge::NORMAL_UPDATED );
7845 } // not a quasi-spherical FACE
7847 // Update _LayerEdge's data according to a new normal
7849 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
7850 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
7852 id2eos = convFace._subIdToEOS.begin();
7853 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7855 _EdgesOnShape& eos = * ( id2eos->second );
7856 for ( size_t i = 0; i < eos._edges.size(); ++i )
7858 _LayerEdge* & ledge = eos._edges[ i ];
7859 double len = ledge->_len;
7860 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
7861 ledge->SetCosin( ledge->_cosin );
7862 ledge->SetNewLength( len, eos, helper );
7864 if ( eos.ShapeType() != TopAbs_FACE )
7865 for ( size_t i = 0; i < eos._edges.size(); ++i )
7867 _LayerEdge* ledge = eos._edges[ i ];
7868 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
7870 _LayerEdge* neibor = ledge->_neibors[iN];
7871 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
7873 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
7874 neibor->Set( _LayerEdge::MOVED );
7875 neibor->SetSmooLen( neibor->_len );
7879 } // loop on sub-shapes of convFace._face
7881 // Find FACEs adjacent to convFace._face that got necessity to smooth
7882 // as a result of normals modification
7884 set< _EdgesOnShape* > adjFacesToSmooth;
7885 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7887 if ( centerCurves[ iE ]._adjFace.IsNull() ||
7888 centerCurves[ iE ]._adjFaceToSmooth )
7890 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
7892 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
7894 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
7899 data.AddShapesToSmooth( adjFacesToSmooth );
7904 } // loop on data._convexFaces
7909 //================================================================================
7911 * \brief Return max curvature of a FACE
7913 //================================================================================
7915 double _ConvexFace::GetMaxCurvature( _SolidData& data,
7917 BRepLProp_SLProps& surfProp,
7918 SMESH_MesherHelper& helper)
7920 double maxCurvature = 0;
7922 TopoDS_Face F = TopoDS::Face( eof._shape );
7924 const int nbTestPnt = 5;
7925 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
7926 SMESH_subMeshIteratorPtr smIt = eof._subMesh->getDependsOnIterator(/*includeSelf=*/true);
7927 while ( smIt->more() )
7929 SMESH_subMesh* sm = smIt->next();
7930 const TGeomID subID = sm->GetId();
7932 // find _LayerEdge's of a sub-shape
7934 if (( eos = data.GetShapeEdges( subID )))
7935 this->_subIdToEOS.insert( make_pair( subID, eos ));
7939 // check concavity and curvature and limit data._stepSize
7940 const double minCurvature =
7941 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
7942 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
7943 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
7945 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
7946 surfProp.SetParameters( uv.X(), uv.Y() );
7947 if ( surfProp.IsCurvatureDefined() )
7949 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
7950 surfProp.MinCurvature() * oriFactor );
7951 maxCurvature = Max( maxCurvature, curvature );
7953 if ( curvature > minCurvature )
7954 this->_isTooCurved = true;
7957 } // loop on sub-shapes of the FACE
7959 return maxCurvature;
7962 //================================================================================
7964 * \brief Finds a center of curvature of a surface at a _LayerEdge
7966 //================================================================================
7968 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
7969 BRepLProp_SLProps& surfProp,
7970 SMESH_MesherHelper& helper,
7971 gp_Pnt & center ) const
7973 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
7974 surfProp.SetParameters( uv.X(), uv.Y() );
7975 if ( !surfProp.IsCurvatureDefined() )
7978 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
7979 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
7980 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
7981 if ( surfCurvatureMin > surfCurvatureMax )
7982 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
7984 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
7989 //================================================================================
7991 * \brief Check that prisms are not distorted
7993 //================================================================================
7995 bool _ConvexFace::CheckPrisms() const
7998 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
8000 const _LayerEdge* edge = _simplexTestEdges[i];
8001 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
8002 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
8003 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
8005 debugMsg( "Bad simplex of _simplexTestEdges ("
8006 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
8007 << " "<< edge->_simplices[j]._nPrev->GetID()
8008 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
8015 //================================================================================
8017 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
8018 * stored in this _CentralCurveOnEdge.
8019 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
8020 * \param [in,out] newNormal - current normal at this point, to be redefined
8021 * \return bool - true if succeeded.
8023 //================================================================================
8025 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
8027 if ( this->_isDegenerated )
8030 // find two centers the given one lies between
8032 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
8034 double sl2 = 1.001 * _segLength2[ i ];
8036 double d1 = center.SquareDistance( _curvaCenters[ i ]);
8040 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
8041 if ( d2 > sl2 || d2 + d1 < 1e-100 )
8046 double r = d1 / ( d1 + d2 );
8047 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
8048 ( r ) * _ledges[ i+1 ]->_normal );
8052 double sz = newNormal.Modulus();
8061 //================================================================================
8063 * \brief Set shape members
8065 //================================================================================
8067 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
8068 const _ConvexFace& convFace,
8070 SMESH_MesherHelper& helper)
8074 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
8075 while ( const TopoDS_Shape* F = fIt->next())
8076 if ( !convFace._face.IsSame( *F ))
8078 _adjFace = TopoDS::Face( *F );
8079 _adjFaceToSmooth = false;
8080 // _adjFace already in a smoothing queue ?
8081 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
8082 _adjFaceToSmooth = eos->_toSmooth;
8087 //================================================================================
8089 * \brief Looks for intersection of it's last segment with faces
8090 * \param distance - returns shortest distance from the last node to intersection
8092 //================================================================================
8094 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
8096 const double& epsilon,
8098 const SMDS_MeshElement** intFace)
8100 vector< const SMDS_MeshElement* > suspectFaces;
8102 gp_Ax1 lastSegment = LastSegment( segLen, eos );
8103 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
8105 bool segmentIntersected = false;
8106 distance = Precision::Infinite();
8107 int iFace = -1; // intersected face
8108 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
8110 const SMDS_MeshElement* face = suspectFaces[j];
8111 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
8112 face->GetNodeIndex( _nodes[0] ) >= 0 )
8113 continue; // face sharing _LayerEdge node
8114 const int nbNodes = face->NbCornerNodes();
8115 bool intFound = false;
8117 SMDS_MeshElement::iterator nIt = face->begin_nodes();
8120 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
8124 const SMDS_MeshNode* tria[3];
8127 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
8130 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
8136 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
8137 segmentIntersected = true;
8138 if ( distance > dist )
8139 distance = dist, iFace = j;
8142 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
8146 if ( segmentIntersected )
8149 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
8150 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
8151 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
8152 << ", intersection with face ("
8153 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
8154 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
8155 << ") distance = " << distance << endl;
8159 return segmentIntersected;
8162 //================================================================================
8164 * \brief Returns a point used to check orientation of _simplices
8166 //================================================================================
8168 gp_XYZ _LayerEdge::PrevCheckPos( _EdgesOnShape* eos ) const
8170 size_t i = Is( NORMAL_UPDATED ) && IsOnFace() ? _pos.size()-2 : 0;
8172 if ( !eos || eos->_sWOL.IsNull() )
8175 if ( eos->SWOLType() == TopAbs_EDGE )
8177 return BRepAdaptor_Curve( TopoDS::Edge( eos->_sWOL )).Value( _pos[i].X() ).XYZ();
8179 //else // TopAbs_FACE
8181 return BRepAdaptor_Surface( TopoDS::Face( eos->_sWOL )).Value(_pos[i].X(), _pos[i].Y() ).XYZ();
8184 //================================================================================
8186 * \brief Returns size and direction of the last segment
8188 //================================================================================
8190 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
8192 // find two non-coincident positions
8193 gp_XYZ orig = _pos.back();
8195 int iPrev = _pos.size() - 2;
8196 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
8197 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
8198 while ( iPrev >= 0 )
8200 vec = orig - _pos[iPrev];
8201 if ( vec.SquareModulus() > tol*tol )
8211 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
8212 segDir.SetDirection( _normal );
8217 gp_Pnt pPrev = _pos[ iPrev ];
8218 if ( !eos._sWOL.IsNull() )
8220 TopLoc_Location loc;
8221 if ( eos.SWOLType() == TopAbs_EDGE )
8224 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8225 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
8229 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
8230 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
8232 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
8234 segDir.SetLocation( pPrev );
8235 segDir.SetDirection( vec );
8236 segLen = vec.Modulus();
8242 //================================================================================
8244 * \brief Return the last (or \a which) position of the target node on a FACE.
8245 * \param [in] F - the FACE this _LayerEdge is inflated along
8246 * \param [in] which - index of position
8247 * \return gp_XY - result UV
8249 //================================================================================
8251 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which ) const
8253 if ( F.IsSame( eos._sWOL )) // F is my FACE
8254 return gp_XY( _pos.back().X(), _pos.back().Y() );
8256 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
8257 return gp_XY( 1e100, 1e100 );
8259 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
8260 double f, l, u = _pos[ which < 0 ? _pos.size()-1 : which ].X();
8261 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
8262 if ( !C2d.IsNull() && f <= u && u <= l )
8263 return C2d->Value( u ).XY();
8265 return gp_XY( 1e100, 1e100 );
8268 //================================================================================
8270 * \brief Test intersection of the last segment with a given triangle
8271 * using Moller-Trumbore algorithm
8272 * Intersection is detected if distance to intersection is less than _LayerEdge._len
8274 //================================================================================
8276 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
8277 const gp_XYZ& vert0,
8278 const gp_XYZ& vert1,
8279 const gp_XYZ& vert2,
8281 const double& EPSILON) const
8283 const gp_Pnt& orig = lastSegment.Location();
8284 const gp_Dir& dir = lastSegment.Direction();
8286 /* calculate distance from vert0 to ray origin */
8287 //gp_XYZ tvec = orig.XYZ() - vert0;
8289 //if ( tvec * dir > EPSILON )
8290 // intersected face is at back side of the temporary face this _LayerEdge belongs to
8293 gp_XYZ edge1 = vert1 - vert0;
8294 gp_XYZ edge2 = vert2 - vert0;
8296 /* begin calculating determinant - also used to calculate U parameter */
8297 gp_XYZ pvec = dir.XYZ() ^ edge2;
8299 /* if determinant is near zero, ray lies in plane of triangle */
8300 double det = edge1 * pvec;
8302 const double ANGL_EPSILON = 1e-12;
8303 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
8306 /* calculate distance from vert0 to ray origin */
8307 gp_XYZ tvec = orig.XYZ() - vert0;
8309 /* calculate U parameter and test bounds */
8310 double u = ( tvec * pvec ) / det;
8311 //if (u < 0.0 || u > 1.0)
8312 if ( u < -EPSILON || u > 1.0 + EPSILON )
8315 /* prepare to test V parameter */
8316 gp_XYZ qvec = tvec ^ edge1;
8318 /* calculate V parameter and test bounds */
8319 double v = (dir.XYZ() * qvec) / det;
8320 //if ( v < 0.0 || u + v > 1.0 )
8321 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
8324 /* calculate t, ray intersects triangle */
8325 t = (edge2 * qvec) / det;
8331 //================================================================================
8333 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
8334 * neighbor _LayerEdge's by it's own inflation vector.
8335 * \param [in] eov - EOS of the VERTEX
8336 * \param [in] eos - EOS of the FACE
8337 * \param [in] step - inflation step
8338 * \param [in,out] badSmooEdges - tangled _LayerEdge's
8340 //================================================================================
8342 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
8343 const _EdgesOnShape* eos,
8345 vector< _LayerEdge* > & badSmooEdges )
8347 // check if any of _neibors is in badSmooEdges
8348 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
8349 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
8352 // get all edges to move
8354 set< _LayerEdge* > edges;
8356 // find a distance between _LayerEdge on VERTEX and its neighbors
8357 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
8359 for ( size_t i = 0; i < _neibors.size(); ++i )
8361 _LayerEdge* nEdge = _neibors[i];
8362 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
8364 edges.insert( nEdge );
8365 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
8368 // add _LayerEdge's close to curPosV
8372 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8374 _LayerEdge* edgeF = *e;
8375 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
8377 _LayerEdge* nEdge = edgeF->_neibors[i];
8378 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
8379 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
8380 edges.insert( nEdge );
8384 while ( nbE < edges.size() );
8386 // move the target node of the got edges
8388 gp_XYZ prevPosV = PrevPos();
8389 if ( eov->SWOLType() == TopAbs_EDGE )
8391 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
8392 prevPosV = curve.Value( prevPosV.X() ).XYZ();
8394 else if ( eov->SWOLType() == TopAbs_FACE )
8396 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
8397 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
8400 SMDS_FacePositionPtr fPos;
8401 //double r = 1. - Min( 0.9, step / 10. );
8402 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8404 _LayerEdge* edgeF = *e;
8405 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
8406 const gp_XYZ newPosF = curPosV + prevVF;
8407 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8408 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
8409 edgeF->_pos.back() = newPosF;
8410 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
8412 // set _curvature to make edgeF updated by putOnOffsetSurface()
8413 if ( !edgeF->_curvature )
8414 if (( fPos = edgeF->_nodes[0]->GetPosition() ))
8416 edgeF->_curvature = _Factory::NewCurvature();
8417 edgeF->_curvature->_r = 0;
8418 edgeF->_curvature->_k = 0;
8419 edgeF->_curvature->_h2lenRatio = 0;
8420 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
8423 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
8424 // SMESH_TNodeXYZ( _nodes[0] ));
8425 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8427 // _LayerEdge* edgeF = *e;
8428 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8429 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8430 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8431 // edgeF->_pos.back() = newPosF;
8432 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
8435 // smooth _LayerEdge's around moved nodes
8436 //size_t nbBadBefore = badSmooEdges.size();
8437 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8439 _LayerEdge* edgeF = *e;
8440 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
8441 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
8442 //&& !edges.count( edgeF->_neibors[j] ))
8444 _LayerEdge* edgeFN = edgeF->_neibors[j];
8445 edgeFN->Unset( SMOOTHED );
8446 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
8449 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
8450 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
8451 // int nbBadAfter = edgeFN->_simplices.size();
8453 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
8455 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
8457 // if ( nbBadAfter <= nbBad )
8459 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
8460 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8461 // edgeF->_pos.back() = newPosF;
8462 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8463 // nbBad = nbBadAfter;
8467 badSmooEdges.push_back( edgeFN );
8470 // move a bit not smoothed around moved nodes
8471 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
8473 // _LayerEdge* edgeF = badSmooEdges[i];
8474 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8475 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8476 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
8477 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
8478 // edgeF->_pos.back() = newPosF;
8479 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8483 //================================================================================
8485 * \brief Perform smooth of _LayerEdge's based on EDGE's
8486 * \retval bool - true if node has been moved
8488 //================================================================================
8490 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
8491 const TopoDS_Face& F,
8492 SMESH_MesherHelper& helper)
8494 ASSERT( IsOnEdge() );
8496 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
8497 SMESH_TNodeXYZ oldPos( tgtNode );
8498 double dist01, distNewOld;
8500 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
8501 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
8502 dist01 = p0.Distance( _2neibors->tgtNode(1) );
8504 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
8505 double lenDelta = 0;
8508 //lenDelta = _curvature->lenDelta( _len );
8509 lenDelta = _curvature->lenDeltaByDist( dist01 );
8510 newPos.ChangeCoord() += _normal * lenDelta;
8513 distNewOld = newPos.Distance( oldPos );
8517 if ( _2neibors->_plnNorm )
8519 // put newPos on the plane defined by source node and _plnNorm
8520 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
8521 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
8522 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
8524 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8525 _pos.back() = newPos.XYZ();
8529 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8530 gp_XY uv( Precision::Infinite(), 0 );
8531 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
8532 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8534 newPos = surface->Value( uv );
8535 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8538 // commented for IPAL0052478
8539 // if ( _curvature && lenDelta < 0 )
8541 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
8542 // _len -= prevPos.Distance( oldPos );
8543 // _len += prevPos.Distance( newPos );
8545 bool moved = distNewOld > dist01/50;
8547 dumpMove( tgtNode ); // debug
8552 //================================================================================
8554 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
8556 //================================================================================
8558 void _LayerEdge::SmoothWoCheck()
8560 if ( Is( DIFFICULT ))
8563 bool moved = Is( SMOOTHED );
8564 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
8565 moved = _neibors[i]->Is( SMOOTHED );
8569 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8571 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8572 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8573 _pos.back() = newPos;
8575 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
8578 //================================================================================
8580 * \brief Checks validity of _neibors on EDGEs and VERTEXes
8582 //================================================================================
8584 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
8586 if ( ! Is( NEAR_BOUNDARY ))
8591 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
8593 _LayerEdge* eN = _neibors[iN];
8594 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
8597 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) ||
8598 eN->Is( _LayerEdge::NORMAL_UPDATED ) ||
8599 eN->_pos.size() != _pos.size() );
8601 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
8602 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
8603 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
8604 if ( eN->_nodes.size() > 1 &&
8605 eN->_simplices[i].Includes( _nodes.back() ) &&
8606 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
8611 badNeibors->push_back( eN );
8612 debugMsg("Bad boundary simplex ( "
8613 << " "<< eN->_nodes[0]->GetID()
8614 << " "<< eN->_nodes.back()->GetID()
8615 << " "<< eN->_simplices[i]._nPrev->GetID()
8616 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
8627 //================================================================================
8629 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
8630 * \retval int - nb of bad simplices around this _LayerEdge
8632 //================================================================================
8634 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
8636 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
8637 return 0; // shape of simplices not changed
8638 if ( _simplices.size() < 2 )
8639 return 0; // _LayerEdge inflated along EDGE or FACE
8641 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
8644 const gp_XYZ& curPos = _pos.back();
8645 const gp_XYZ& prevPos = _pos[0]; //PrevPos();
8647 // quality metrics (orientation) of tetras around _tgtNode
8649 double vol, minVolBefore = 1e100;
8650 for ( size_t i = 0; i < _simplices.size(); ++i )
8652 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
8653 minVolBefore = Min( minVolBefore, vol );
8655 int nbBad = _simplices.size() - nbOkBefore;
8657 bool bndNeedSmooth = false;
8659 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
8663 // evaluate min angle
8664 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
8666 size_t nbGoodAngles = _simplices.size();
8668 for ( size_t i = 0; i < _simplices.size(); ++i )
8670 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
8673 if ( nbGoodAngles == _simplices.size() )
8679 if ( Is( ON_CONCAVE_FACE ))
8682 if ( step % 2 == 0 )
8685 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
8687 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
8688 _smooFunction = _funs[ FUN_CENTROIDAL ];
8690 _smooFunction = _funs[ FUN_LAPLACIAN ];
8693 // compute new position for the last _pos using different _funs
8696 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
8699 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8700 else if ( _funs[ iFun ] == _smooFunction )
8701 continue; // _smooFunction again
8702 else if ( step > 1 )
8703 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
8705 break; // let "easy" functions improve elements around distorted ones
8709 double delta = _curvature->lenDelta( _len );
8711 newPos += _normal * delta;
8714 double segLen = _normal * ( newPos - prevPos );
8715 if ( segLen + delta > 0 )
8716 newPos += _normal * delta;
8718 // double segLenChange = _normal * ( curPos - newPos );
8719 // newPos += 0.5 * _normal * segLenChange;
8723 double minVolAfter = 1e100;
8724 for ( size_t i = 0; i < _simplices.size(); ++i )
8726 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
8727 minVolAfter = Min( minVolAfter, vol );
8730 if ( nbOkAfter < nbOkBefore )
8734 ( nbOkAfter == nbOkBefore ) &&
8735 ( minVolAfter <= minVolBefore ))
8738 nbBad = _simplices.size() - nbOkAfter;
8739 minVolBefore = minVolAfter;
8740 nbOkBefore = nbOkAfter;
8743 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8744 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8745 _pos.back() = newPos;
8747 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
8748 << (nbBad ? " --BAD" : ""));
8752 continue; // look for a better function
8758 } // loop on smoothing functions
8760 if ( moved ) // notify _neibors
8763 for ( size_t i = 0; i < _neibors.size(); ++i )
8764 if ( !_neibors[i]->Is( MOVED ))
8766 _neibors[i]->Set( MOVED );
8767 toSmooth.push_back( _neibors[i] );
8774 //================================================================================
8776 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
8777 * \retval int - nb of bad simplices around this _LayerEdge
8779 //================================================================================
8781 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
8783 if ( !_smooFunction )
8784 return 0; // _LayerEdge inflated along EDGE or FACE
8786 return 0; // not inflated
8788 const gp_XYZ& curPos = _pos.back();
8789 const gp_XYZ& prevPos = _pos[0]; //PrevCheckPos();
8791 // quality metrics (orientation) of tetras around _tgtNode
8793 double vol, minVolBefore = 1e100;
8794 for ( size_t i = 0; i < _simplices.size(); ++i )
8796 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
8797 minVolBefore = Min( minVolBefore, vol );
8799 int nbBad = _simplices.size() - nbOkBefore;
8801 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
8803 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
8804 _smooFunction = _funs[ FUN_LAPLACIAN ];
8805 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
8806 _smooFunction = _funs[ FUN_CENTROIDAL ];
8809 // compute new position for the last _pos using different _funs
8811 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
8814 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8815 else if ( _funs[ iFun ] == _smooFunction )
8816 continue; // _smooFunction again
8817 else if ( step > 1 )
8818 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
8820 break; // let "easy" functions improve elements around distorted ones
8824 double delta = _curvature->lenDelta( _len );
8826 newPos += _normal * delta;
8829 double segLen = _normal * ( newPos - prevPos );
8830 if ( segLen + delta > 0 )
8831 newPos += _normal * delta;
8833 // double segLenChange = _normal * ( curPos - newPos );
8834 // newPos += 0.5 * _normal * segLenChange;
8838 double minVolAfter = 1e100;
8839 for ( size_t i = 0; i < _simplices.size(); ++i )
8841 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
8842 minVolAfter = Min( minVolAfter, vol );
8845 if ( nbOkAfter < nbOkBefore )
8847 if (( isConcaveFace || findBest ) &&
8848 ( nbOkAfter == nbOkBefore ) &&
8849 ( minVolAfter <= minVolBefore )
8853 nbBad = _simplices.size() - nbOkAfter;
8854 minVolBefore = minVolAfter;
8855 nbOkBefore = nbOkAfter;
8857 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8858 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8859 _pos.back() = newPos;
8861 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
8862 << ( nbBad ? "--BAD" : ""));
8864 // commented for IPAL0052478
8865 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
8866 // _len += prevPos.Distance(newPos);
8868 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
8870 //_smooFunction = _funs[ iFun ];
8871 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
8872 // << "\t nbBad: " << _simplices.size() - nbOkAfter
8873 // << " minVol: " << minVolAfter
8874 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
8876 continue; // look for a better function
8882 } // loop on smoothing functions
8887 //================================================================================
8889 * \brief Chooses a smoothing technique giving a position most close to an initial one.
8890 * For a correct result, _simplices must contain nodes lying on geometry.
8892 //================================================================================
8894 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
8895 const TNode2Edge& n2eMap)
8897 if ( _smooFunction ) return;
8899 // use smoothNefPolygon() near concaveVertices
8900 if ( !concaveVertices.empty() )
8902 _smooFunction = _funs[ FUN_CENTROIDAL ];
8904 Set( ON_CONCAVE_FACE );
8906 for ( size_t i = 0; i < _simplices.size(); ++i )
8908 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
8910 _smooFunction = _funs[ FUN_NEFPOLY ];
8912 // set FUN_CENTROIDAL to neighbor edges
8913 for ( i = 0; i < _neibors.size(); ++i )
8915 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
8917 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
8924 // // this choice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
8925 // // where the nodes are smoothed too far along a sphere thus creating
8926 // // inverted _simplices
8927 // double dist[theNbSmooFuns];
8928 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
8929 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
8931 // double minDist = Precision::Infinite();
8932 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
8933 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
8935 // gp_Pnt newP = (this->*_funs[i])();
8936 // dist[i] = p.SquareDistance( newP );
8937 // if ( dist[i]*coef[i] < minDist )
8939 // _smooFunction = _funs[i];
8940 // minDist = dist[i]*coef[i];
8946 _smooFunction = _funs[ FUN_LAPLACIAN ];
8949 // for ( size_t i = 0; i < _simplices.size(); ++i )
8950 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
8951 // if ( minDim == 0 )
8952 // _smooFunction = _funs[ FUN_CENTROIDAL ];
8953 // else if ( minDim == 1 )
8954 // _smooFunction = _funs[ FUN_CENTROIDAL ];
8958 // for ( int i = 0; i < FUN_NB; ++i )
8960 // //cout << dist[i] << " ";
8961 // if ( _smooFunction == _funs[i] ) {
8963 // //debugMsg( fNames[i] );
8967 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
8970 //================================================================================
8972 * \brief Returns a name of _SmooFunction
8974 //================================================================================
8976 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
8979 fun = _smooFunction;
8980 for ( int i = 0; i < theNbSmooFuns; ++i )
8981 if ( fun == _funs[i] )
8984 return theNbSmooFuns;
8987 //================================================================================
8989 * \brief Computes a new node position using Laplacian smoothing
8991 //================================================================================
8993 gp_XYZ _LayerEdge::smoothLaplacian()
8995 gp_XYZ newPos (0,0,0);
8996 for ( size_t i = 0; i < _simplices.size(); ++i )
8997 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
8998 newPos /= _simplices.size();
9003 //================================================================================
9005 * \brief Computes a new node position using angular-based smoothing
9007 //================================================================================
9009 gp_XYZ _LayerEdge::smoothAngular()
9011 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
9012 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
9013 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
9015 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9017 for ( size_t i = 0; i < _simplices.size(); ++i )
9019 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9020 edgeDir.push_back( p - pPrev );
9021 edgeSize.push_back( edgeDir.back().Magnitude() );
9022 if ( edgeSize.back() < numeric_limits<double>::min() )
9025 edgeSize.pop_back();
9029 edgeDir.back() /= edgeSize.back();
9030 points.push_back( p );
9035 edgeDir.push_back ( edgeDir[0] );
9036 edgeSize.push_back( edgeSize[0] );
9037 pN /= points.size();
9039 gp_XYZ newPos(0,0,0);
9041 for ( size_t i = 0; i < points.size(); ++i )
9043 gp_Vec toN = pN - points[i];
9044 double toNLen = toN.Magnitude();
9045 if ( toNLen < numeric_limits<double>::min() )
9050 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
9051 double bisecLen = bisec.SquareMagnitude();
9052 if ( bisecLen < numeric_limits<double>::min() )
9054 gp_Vec norm = edgeDir[i] ^ toN;
9055 bisec = norm ^ edgeDir[i];
9056 bisecLen = bisec.SquareMagnitude();
9058 bisecLen = Sqrt( bisecLen );
9062 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
9063 sumSize += bisecLen;
9065 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
9066 sumSize += ( edgeSize[i] + edgeSize[i+1] );
9072 // project newPos to an average plane
9074 gp_XYZ norm(0,0,0); // plane normal
9075 points.push_back( points[0] );
9076 for ( size_t i = 1; i < points.size(); ++i )
9078 gp_XYZ vec1 = points[ i-1 ] - pN;
9079 gp_XYZ vec2 = points[ i ] - pN;
9080 gp_XYZ cross = vec1 ^ vec2;
9083 if ( cross * norm < numeric_limits<double>::min() )
9084 norm += cross.Reversed();
9088 catch (Standard_Failure) { // if |cross| == 0.
9091 gp_XYZ vec = newPos - pN;
9092 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
9093 newPos = newPos - r * norm;
9098 //================================================================================
9100 * \brief Computes a new node position using weighted node positions
9102 //================================================================================
9104 gp_XYZ _LayerEdge::smoothLengthWeighted()
9106 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
9107 vector< gp_XYZ > points; points. reserve( _simplices.size() );
9109 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9110 for ( size_t i = 0; i < _simplices.size(); ++i )
9112 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9113 edgeSize.push_back( ( p - pPrev ).Modulus() );
9114 if ( edgeSize.back() < numeric_limits<double>::min() )
9116 edgeSize.pop_back();
9120 points.push_back( p );
9124 edgeSize.push_back( edgeSize[0] );
9126 gp_XYZ newPos(0,0,0);
9128 for ( size_t i = 0; i < points.size(); ++i )
9130 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
9131 sumSize += edgeSize[i] + edgeSize[i+1];
9137 //================================================================================
9139 * \brief Computes a new node position using angular-based smoothing
9141 //================================================================================
9143 gp_XYZ _LayerEdge::smoothCentroidal()
9145 gp_XYZ newPos(0,0,0);
9146 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
9148 for ( size_t i = 0; i < _simplices.size(); ++i )
9150 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9151 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
9152 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
9153 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
9156 newPos += gc * size;
9163 //================================================================================
9165 * \brief Computes a new node position located inside a Nef polygon
9167 //================================================================================
9169 gp_XYZ _LayerEdge::smoothNefPolygon()
9170 #ifdef OLD_NEF_POLYGON
9172 gp_XYZ newPos(0,0,0);
9174 // get a plane to search a solution on
9176 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9178 const double tol = numeric_limits<double>::min();
9179 gp_XYZ center(0,0,0);
9180 for ( i = 0; i < _simplices.size(); ++i )
9182 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
9183 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
9184 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9186 vecs.back() = vecs[0];
9187 center /= _simplices.size();
9189 gp_XYZ zAxis(0,0,0);
9190 for ( i = 0; i < _simplices.size(); ++i )
9191 zAxis += vecs[i] ^ vecs[i+1];
9194 for ( i = 0; i < _simplices.size(); ++i )
9197 if ( yAxis.SquareModulus() > tol )
9200 gp_XYZ xAxis = yAxis ^ zAxis;
9201 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9202 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9203 // p0.Distance( _simplices[2]._nPrev ));
9204 // gp_XYZ center = smoothLaplacian();
9205 // gp_XYZ xAxis, yAxis, zAxis;
9206 // for ( i = 0; i < _simplices.size(); ++i )
9208 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9209 // if ( xAxis.SquareModulus() > tol*tol )
9212 // for ( i = 1; i < _simplices.size(); ++i )
9214 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9215 // zAxis = xAxis ^ yAxis;
9216 // if ( zAxis.SquareModulus() > tol*tol )
9219 // if ( i == _simplices.size() ) return newPos;
9221 yAxis = zAxis ^ xAxis;
9222 xAxis /= xAxis.Modulus();
9223 yAxis /= yAxis.Modulus();
9225 // get half-planes of _simplices
9227 vector< _halfPlane > halfPlns( _simplices.size() );
9229 for ( size_t i = 0; i < _simplices.size(); ++i )
9231 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9232 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
9233 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9234 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9235 gp_XY vec12 = p2 - p1;
9236 double dist12 = vec12.Modulus();
9240 halfPlns[ nbHP ]._pos = p1;
9241 halfPlns[ nbHP ]._dir = vec12;
9242 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9246 // intersect boundaries of half-planes, define state of intersection points
9247 // in relation to all half-planes and calculate internal point of a 2D polygon
9250 gp_XY newPos2D (0,0);
9252 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9253 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9254 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9256 vector< vector< TIntPntState > > allIntPnts( nbHP );
9257 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9259 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9260 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9262 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9263 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9266 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9268 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9270 if ( iHP1 == iHP2 ) continue;
9272 TIntPntState & ips1 = intPnts1[ iHP2 ];
9273 if ( ips1.second == UNDEF )
9275 // find an intersection point of boundaries of iHP1 and iHP2
9277 if ( iHP2 == iPrev ) // intersection with neighbors is known
9278 ips1.first = halfPlns[ iHP1 ]._pos;
9279 else if ( iHP2 == iNext )
9280 ips1.first = halfPlns[ iHP2 ]._pos;
9281 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9282 ips1.second = NO_INT;
9284 // classify the found intersection point
9285 if ( ips1.second != NO_INT )
9287 ips1.second = NOT_OUT;
9288 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9289 if ( i != iHP1 && i != iHP2 &&
9290 halfPlns[ i ].IsOut( ips1.first, tol ))
9291 ips1.second = IS_OUT;
9293 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9294 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9295 TIntPntState & ips2 = intPnts2[ iHP1 ];
9298 if ( ips1.second == NOT_OUT )
9301 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9305 // find a NOT_OUT segment of boundary which is located between
9306 // two NOT_OUT int points
9309 continue; // no such a segment
9313 // sort points along the boundary
9314 map< double, TIntPntState* > ipsByParam;
9315 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9317 TIntPntState & ips1 = intPnts1[ iHP2 ];
9318 if ( ips1.second != NO_INT )
9320 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9321 double param = op * halfPlns[ iHP1 ]._dir;
9322 ipsByParam.insert( make_pair( param, & ips1 ));
9325 // look for two neighboring NOT_OUT points
9327 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9328 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9330 TIntPntState & ips1 = *(u2ips->second);
9331 if ( ips1.second == NOT_OUT )
9332 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9333 else if ( nbNotOut >= 2 )
9340 if ( nbNotOut >= 2 )
9342 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9345 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9352 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9361 #else // OLD_NEF_POLYGON
9362 { ////////////////////////////////// NEW
9363 gp_XYZ newPos(0,0,0);
9365 // get a plane to search a solution on
9368 gp_XYZ center(0,0,0);
9369 for ( i = 0; i < _simplices.size(); ++i )
9370 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9371 center /= _simplices.size();
9373 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9374 for ( i = 0; i < _simplices.size(); ++i )
9375 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9376 vecs.back() = vecs[0];
9378 const double tol = numeric_limits<double>::min();
9379 gp_XYZ zAxis(0,0,0);
9380 for ( i = 0; i < _simplices.size(); ++i )
9382 gp_XYZ cross = vecs[i] ^ vecs[i+1];
9385 if ( cross * zAxis < tol )
9386 zAxis += cross.Reversed();
9390 catch (Standard_Failure) { // if |cross| == 0.
9395 for ( i = 0; i < _simplices.size(); ++i )
9398 if ( yAxis.SquareModulus() > tol )
9401 gp_XYZ xAxis = yAxis ^ zAxis;
9402 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9403 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9404 // p0.Distance( _simplices[2]._nPrev ));
9405 // gp_XYZ center = smoothLaplacian();
9406 // gp_XYZ xAxis, yAxis, zAxis;
9407 // for ( i = 0; i < _simplices.size(); ++i )
9409 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9410 // if ( xAxis.SquareModulus() > tol*tol )
9413 // for ( i = 1; i < _simplices.size(); ++i )
9415 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9416 // zAxis = xAxis ^ yAxis;
9417 // if ( zAxis.SquareModulus() > tol*tol )
9420 // if ( i == _simplices.size() ) return newPos;
9422 yAxis = zAxis ^ xAxis;
9423 xAxis /= xAxis.Modulus();
9424 yAxis /= yAxis.Modulus();
9426 // get half-planes of _simplices
9428 vector< _halfPlane > halfPlns( _simplices.size() );
9430 for ( size_t i = 0; i < _simplices.size(); ++i )
9432 const gp_XYZ& OP1 = vecs[ i ];
9433 const gp_XYZ& OP2 = vecs[ i+1 ];
9434 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9435 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9436 gp_XY vec12 = p2 - p1;
9437 double dist12 = vec12.Modulus();
9441 halfPlns[ nbHP ]._pos = p1;
9442 halfPlns[ nbHP ]._dir = vec12;
9443 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9447 // intersect boundaries of half-planes, define state of intersection points
9448 // in relation to all half-planes and calculate internal point of a 2D polygon
9451 gp_XY newPos2D (0,0);
9453 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9454 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9455 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9457 vector< vector< TIntPntState > > allIntPnts( nbHP );
9458 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9460 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9461 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9463 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9464 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9467 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9469 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9471 if ( iHP1 == iHP2 ) continue;
9473 TIntPntState & ips1 = intPnts1[ iHP2 ];
9474 if ( ips1.second == UNDEF )
9476 // find an intersection point of boundaries of iHP1 and iHP2
9478 if ( iHP2 == iPrev ) // intersection with neighbors is known
9479 ips1.first = halfPlns[ iHP1 ]._pos;
9480 else if ( iHP2 == iNext )
9481 ips1.first = halfPlns[ iHP2 ]._pos;
9482 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9483 ips1.second = NO_INT;
9485 // classify the found intersection point
9486 if ( ips1.second != NO_INT )
9488 ips1.second = NOT_OUT;
9489 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9490 if ( i != iHP1 && i != iHP2 &&
9491 halfPlns[ i ].IsOut( ips1.first, tol ))
9492 ips1.second = IS_OUT;
9494 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9495 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9496 TIntPntState & ips2 = intPnts2[ iHP1 ];
9499 if ( ips1.second == NOT_OUT )
9502 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9506 // find a NOT_OUT segment of boundary which is located between
9507 // two NOT_OUT int points
9510 continue; // no such a segment
9514 // sort points along the boundary
9515 map< double, TIntPntState* > ipsByParam;
9516 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9518 TIntPntState & ips1 = intPnts1[ iHP2 ];
9519 if ( ips1.second != NO_INT )
9521 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9522 double param = op * halfPlns[ iHP1 ]._dir;
9523 ipsByParam.insert( make_pair( param, & ips1 ));
9526 // look for two neighboring NOT_OUT points
9528 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9529 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9531 TIntPntState & ips1 = *(u2ips->second);
9532 if ( ips1.second == NOT_OUT )
9533 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9534 else if ( nbNotOut >= 2 )
9541 if ( nbNotOut >= 2 )
9543 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9546 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9553 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9562 #endif // OLD_NEF_POLYGON
9564 //================================================================================
9566 * \brief Add a new segment to _LayerEdge during inflation
9568 //================================================================================
9570 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
9575 if ( len > _maxLen )
9578 Block( eos.GetData() );
9580 const double lenDelta = len - _len;
9581 if ( lenDelta < len * 1e-3 )
9583 Block( eos.GetData() );
9587 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9588 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
9590 if ( eos._hyp.IsOffsetMethod() )
9594 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
9595 while ( faceIt->more() )
9597 const SMDS_MeshElement* face = faceIt->next();
9598 if ( !eos.GetNormal( face, faceNorm ))
9601 // translate plane of a face
9602 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
9604 // find point of intersection of the face plane located at baryCenter
9605 // and _normal located at newXYZ
9606 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
9607 double dot = ( faceNorm.XYZ() * _normal );
9608 if ( dot < std::numeric_limits<double>::min() )
9609 dot = lenDelta * 1e-3;
9610 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
9611 newXYZ += step * _normal;
9613 _lenFactor = _normal * ( newXYZ - oldXYZ ) / lenDelta; // _lenFactor is used in InvalidateStep()
9617 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
9620 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
9621 _pos.push_back( newXYZ );
9623 if ( !eos._sWOL.IsNull() )
9627 if ( eos.SWOLType() == TopAbs_EDGE )
9629 double u = Precision::Infinite(); // to force projection w/o distance check
9630 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u,
9631 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
9632 _pos.back().SetCoord( u, 0, 0 );
9633 if ( _nodes.size() > 1 && uvOK )
9635 SMDS_EdgePositionPtr pos = n->GetPosition();
9636 pos->SetUParameter( u );
9641 gp_XY uv( Precision::Infinite(), 0 );
9642 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv,
9643 /*tol=*/2*lenDelta, /*force=*/true, distXYZ );
9644 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
9645 if ( _nodes.size() > 1 && uvOK )
9647 SMDS_FacePositionPtr pos = n->GetPosition();
9648 pos->SetUParameter( uv.X() );
9649 pos->SetVParameter( uv.Y() );
9654 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
9658 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
9660 Block( eos.GetData() );
9668 if ( eos.ShapeType() != TopAbs_FACE )
9670 for ( size_t i = 0; i < _neibors.size(); ++i )
9671 //if ( _len > _neibors[i]->GetSmooLen() )
9672 _neibors[i]->Set( MOVED );
9676 dumpMove( n ); //debug
9679 //================================================================================
9681 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
9683 //================================================================================
9685 void _LayerEdge::Block( _SolidData& data )
9687 //if ( Is( BLOCKED )) return;
9690 SMESH_Comment msg( "#BLOCK shape=");
9691 msg << data.GetShapeEdges( this )->_shapeID
9692 << ", nodes " << _nodes[0]->GetID() << ", " << _nodes.back()->GetID();
9693 dumpCmd( msg + " -- BEGIN");
9696 std::queue<_LayerEdge*> queue;
9699 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
9700 while ( !queue.empty() )
9702 _LayerEdge* edge = queue.front(); queue.pop();
9703 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
9704 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
9705 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
9707 _LayerEdge* neibor = edge->_neibors[iN];
9708 if ( neibor->_maxLen < edge->_maxLen * 1.01 )
9710 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
9711 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
9712 double minDist = pSrc.SquareDistance( pSrcN );
9713 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
9714 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
9715 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
9716 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
9717 //if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() ) viscous_layers_00/A3
9719 //newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
9720 // newMaxLen *= Min( edge->_lenFactor / neibor->_lenFactor,
9721 // neibor->_lenFactor / edge->_lenFactor );
9723 if ( neibor->_maxLen > newMaxLen )
9725 neibor->SetMaxLen( newMaxLen );
9726 if ( neibor->_maxLen < neibor->_len )
9728 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
9729 int lastStep = neibor->Is( BLOCKED ) ? 1 : 0;
9730 while ( neibor->_len > neibor->_maxLen &&
9731 neibor->NbSteps() > lastStep )
9732 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
9733 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
9734 //neibor->Block( data );
9736 queue.push( neibor );
9740 dumpCmd( msg + " -- END");
9743 //================================================================================
9745 * \brief Remove last inflation step
9747 //================================================================================
9749 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
9751 if ( _pos.size() > curStep && _nodes.size() > 1 )
9753 _pos.resize( curStep );
9755 gp_Pnt nXYZ = _pos.back();
9756 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9757 SMESH_TNodeXYZ curXYZ( n );
9758 if ( !eos._sWOL.IsNull() )
9760 TopLoc_Location loc;
9761 if ( eos.SWOLType() == TopAbs_EDGE )
9763 SMDS_EdgePositionPtr pos = n->GetPosition();
9764 pos->SetUParameter( nXYZ.X() );
9766 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
9767 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
9771 SMDS_FacePositionPtr pos = n->GetPosition();
9772 pos->SetUParameter( nXYZ.X() );
9773 pos->SetVParameter( nXYZ.Y() );
9774 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
9775 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
9778 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
9781 if ( restoreLength )
9783 if ( NbSteps() == 0 )
9785 else if ( IsOnFace() && Is( MOVED ))
9786 _len = ( nXYZ.XYZ() - SMESH_NodeXYZ( _nodes[0] )) * _normal;
9788 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
9794 //================================================================================
9796 * \brief Return index of a _pos distant from _normal
9798 //================================================================================
9800 int _LayerEdge::GetSmoothedPos( const double tol )
9803 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
9805 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
9806 if ( normDist > tol * tol )
9812 //================================================================================
9814 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
9816 //================================================================================
9818 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
9820 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
9823 // find the 1st smoothed _pos
9824 int iSmoothed = GetSmoothedPos( tol );
9825 if ( !iSmoothed ) return;
9827 gp_XYZ normal = _normal;
9828 if ( Is( NORMAL_UPDATED ))
9831 for ( size_t i = 0; i < _neibors.size(); ++i )
9833 if ( _neibors[i]->IsOnFace() )
9835 double dot = _normal * _neibors[i]->_normal;
9838 normal = _neibors[i]->_normal;
9844 for ( size_t i = 1; i < _pos.size(); ++i )
9846 normal = _pos[i] - _pos[0];
9847 double size = normal.Modulus();
9848 if ( size > RealSmall() )
9855 const double r = 0.2;
9856 for ( int iter = 0; iter < 50; ++iter )
9859 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
9861 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
9862 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
9864 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
9865 double newLen = ( 1-r ) * midLen + r * segLen[i];
9866 const_cast< double& >( segLen[i] ) = newLen;
9867 // check angle between normal and (_pos[i+1], _pos[i] )
9868 gp_XYZ posDir = _pos[i+1] - _pos[i];
9869 double size = posDir.SquareModulus();
9870 if ( size > RealSmall() )
9871 minDot = Min( minDot, ( normal * posDir ) * ( normal * posDir ) / size );
9873 if ( minDot > 0.5 * 0.5 )
9879 //================================================================================
9881 * \brief Print flags
9883 //================================================================================
9885 std::string _LayerEdge::DumpFlags() const
9888 for ( int flag = 1; flag < 0x1000000; flag *= 2 )
9889 if ( _flags & flag )
9891 EFlags f = (EFlags) flag;
9893 case TO_SMOOTH: dump << "TO_SMOOTH"; break;
9894 case MOVED: dump << "MOVED"; break;
9895 case SMOOTHED: dump << "SMOOTHED"; break;
9896 case DIFFICULT: dump << "DIFFICULT"; break;
9897 case ON_CONCAVE_FACE: dump << "ON_CONCAVE_FACE"; break;
9898 case BLOCKED: dump << "BLOCKED"; break;
9899 case INTERSECTED: dump << "INTERSECTED"; break;
9900 case NORMAL_UPDATED: dump << "NORMAL_UPDATED"; break;
9901 case UPD_NORMAL_CONV: dump << "UPD_NORMAL_CONV"; break;
9902 case MARKED: dump << "MARKED"; break;
9903 case MULTI_NORMAL: dump << "MULTI_NORMAL"; break;
9904 case NEAR_BOUNDARY: dump << "NEAR_BOUNDARY"; break;
9905 case SMOOTHED_C1: dump << "SMOOTHED_C1"; break;
9906 case DISTORTED: dump << "DISTORTED"; break;
9907 case RISKY_SWOL: dump << "RISKY_SWOL"; break;
9908 case SHRUNK: dump << "SHRUNK"; break;
9909 case UNUSED_FLAG: dump << "UNUSED_FLAG"; break;
9913 cout << dump << endl;
9918 //================================================================================
9920 * \brief Create layers of prisms
9922 //================================================================================
9924 bool _ViscousBuilder::refine(_SolidData& data)
9926 SMESH_MesherHelper& helper = data.GetHelper();
9927 helper.SetElementsOnShape(false);
9929 Handle(Geom_Curve) curve;
9930 Handle(ShapeAnalysis_Surface) surface;
9931 TopoDS_Edge geomEdge;
9932 TopoDS_Face geomFace;
9933 TopLoc_Location loc;
9936 vector< gp_XYZ > pos3D;
9937 bool isOnEdge, isTooConvexFace = false;
9938 TGeomID prevBaseId = -1;
9939 TNode2Edge* n2eMap = 0;
9940 TNode2Edge::iterator n2e;
9942 // Create intermediate nodes on each _LayerEdge
9944 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
9946 _EdgesOnShape& eos = data._edgesOnShape[iS];
9947 if ( eos._edges.empty() ) continue;
9949 if ( eos._edges[0]->_nodes.size() < 2 )
9950 continue; // on _noShrinkShapes
9952 // get data of a shrink shape
9954 geomEdge.Nullify(); geomFace.Nullify();
9955 curve.Nullify(); surface.Nullify();
9956 if ( !eos._sWOL.IsNull() )
9958 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
9961 geomEdge = TopoDS::Edge( eos._sWOL );
9962 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
9966 geomFace = TopoDS::Face( eos._sWOL );
9967 surface = helper.GetSurface( geomFace );
9970 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
9972 geomFace = TopoDS::Face( eos._shape );
9973 surface = helper.GetSurface( geomFace );
9974 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
9975 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
9976 eos._eosC1[ i ]->_toSmooth = true;
9978 isTooConvexFace = false;
9979 if ( _ConvexFace* cf = data.GetConvexFace( eos._shapeID ))
9980 isTooConvexFace = cf->_isTooCurved;
9983 vector< double > segLen;
9984 for ( size_t i = 0; i < eos._edges.size(); ++i )
9986 _LayerEdge& edge = *eos._edges[i];
9987 if ( edge._pos.size() < 2 )
9990 // get accumulated length of segments
9991 segLen.resize( edge._pos.size() );
9993 if ( eos._sWOL.IsNull() )
9995 bool useNormal = true;
9996 bool usePos = false;
9997 bool smoothed = false;
9998 double preci = 0.1 * edge._len;
9999 if ( eos._toSmooth && edge._pos.size() > 2 )
10001 smoothed = edge.GetSmoothedPos( preci );
10005 if ( !surface.IsNull() && !isTooConvexFace ) // edge smoothed on FACE
10007 useNormal = usePos = false;
10008 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
10009 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
10011 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
10012 if ( surface->Gap() < 2. * edge._len )
10013 segLen[j] = surface->Gap();
10019 else if ( !edge.Is( _LayerEdge::NORMAL_UPDATED ))
10021 #ifndef __NODES_AT_POS
10022 useNormal = usePos = false;
10023 edge._pos[1] = edge._pos.back();
10024 edge._pos.resize( 2 );
10025 segLen.resize( 2 );
10026 segLen[ 1 ] = edge._len;
10029 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
10031 useNormal = usePos = false;
10032 _LayerEdge tmpEdge; // get original _normal
10033 tmpEdge._nodes.push_back( edge._nodes[0] );
10034 if ( !setEdgeData( tmpEdge, eos, helper, data ))
10037 for ( size_t j = 1; j < edge._pos.size(); ++j )
10038 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
10042 for ( size_t j = 1; j < edge._pos.size(); ++j )
10043 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
10047 for ( size_t j = 1; j < edge._pos.size(); ++j )
10048 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
10052 bool swapped = ( edge._pos.size() > 2 );
10056 for ( size_t j = 1; j < edge._pos.size()-1; ++j )
10057 if ( segLen[j] > segLen.back() )
10059 segLen.erase( segLen.begin() + j );
10060 edge._pos.erase( edge._pos.begin() + j );
10063 else if ( segLen[j] < segLen[j-1] )
10065 std::swap( segLen[j], segLen[j-1] );
10066 std::swap( edge._pos[j], edge._pos[j-1] );
10071 // smooth a path formed by edge._pos
10072 #ifndef __NODES_AT_POS
10073 if (( smoothed ) /*&&
10074 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
10075 edge.SmoothPos( segLen, preci );
10078 else if ( eos._isRegularSWOL ) // usual SWOL
10080 if ( edge.Is( _LayerEdge::SMOOTHED ))
10082 SMESH_NodeXYZ p0( edge._nodes[0] );
10083 for ( size_t j = 1; j < edge._pos.size(); ++j )
10085 gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10086 segLen[j] = ( pj - p0 ) * edge._normal;
10091 for ( size_t j = 1; j < edge._pos.size(); ++j )
10092 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
10095 else if ( !surface.IsNull() ) // SWOL surface with singularities
10097 pos3D.resize( edge._pos.size() );
10098 for ( size_t j = 0; j < edge._pos.size(); ++j )
10099 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10101 for ( size_t j = 1; j < edge._pos.size(); ++j )
10102 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
10105 // allocate memory for new nodes if it is not yet refined
10106 const SMDS_MeshNode* tgtNode = edge._nodes.back();
10107 if ( edge._nodes.size() == 2 )
10109 #ifdef __NODES_AT_POS
10110 int nbNodes = edge._pos.size();
10112 int nbNodes = eos._hyp.GetNumberLayers() + 1;
10114 edge._nodes.resize( nbNodes, 0 );
10115 edge._nodes[1] = 0;
10116 edge._nodes.back() = tgtNode;
10118 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
10119 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
10120 if ( baseShapeId != prevBaseId )
10122 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
10123 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
10124 prevBaseId = baseShapeId;
10126 _LayerEdge* edgeOnSameNode = 0;
10127 bool useExistingPos = false;
10128 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
10130 edgeOnSameNode = n2e->second;
10131 useExistingPos = ( edgeOnSameNode->_len < edge._len );
10132 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
10133 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
10136 SMDS_EdgePositionPtr epos = lastPos;
10137 epos->SetUParameter( otherTgtPos.X() );
10141 SMDS_FacePositionPtr fpos = lastPos;
10142 fpos->SetUParameter( otherTgtPos.X() );
10143 fpos->SetVParameter( otherTgtPos.Y() );
10146 // calculate height of the first layer
10148 const double T = segLen.back(); //data._hyp.GetTotalThickness();
10149 const double f = eos._hyp.GetStretchFactor();
10150 const int N = eos._hyp.GetNumberLayers();
10151 const double fPowN = pow( f, N );
10152 if ( fPowN - 1 <= numeric_limits<double>::min() )
10155 h0 = T * ( f - 1 )/( fPowN - 1 );
10157 const double zeroLen = std::numeric_limits<double>::min();
10159 // create intermediate nodes
10160 double hSum = 0, hi = h0/f;
10162 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
10164 // compute an intermediate position
10167 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
10169 int iPrevSeg = iSeg-1;
10170 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
10172 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
10173 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
10174 #ifdef __NODES_AT_POS
10175 pos = edge._pos[ iStep ];
10177 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
10178 if ( !eos._sWOL.IsNull() )
10180 // compute XYZ by parameters <pos>
10185 pos = curve->Value( u ).Transformed(loc);
10187 else if ( eos._isRegularSWOL )
10189 uv.SetCoord( pos.X(), pos.Y() );
10191 pos = surface->Value( pos.X(), pos.Y() );
10195 uv.SetCoord( pos.X(), pos.Y() );
10196 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
10197 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
10199 pos = surface->Value( uv );
10202 // create or update the node
10205 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
10206 if ( !eos._sWOL.IsNull() )
10209 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
10211 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
10215 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
10220 if ( !eos._sWOL.IsNull() )
10222 // make average pos from new and current parameters
10225 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
10226 if ( useExistingPos )
10227 u = helper.GetNodeU( geomEdge, node );
10228 pos = curve->Value( u ).Transformed(loc);
10230 SMDS_EdgePositionPtr epos = node->GetPosition();
10231 epos->SetUParameter( u );
10235 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
10236 if ( useExistingPos )
10237 uv = helper.GetNodeUV( geomFace, node );
10238 pos = surface->Value( uv );
10240 SMDS_FacePositionPtr fpos = node->GetPosition();
10241 fpos->SetUParameter( uv.X() );
10242 fpos->SetVParameter( uv.Y() );
10245 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
10247 } // loop on edge._nodes
10249 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
10252 edge._pos.back().SetCoord( u, 0,0);
10254 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
10256 if ( edgeOnSameNode )
10257 edgeOnSameNode->_pos.back() = edge._pos.back();
10260 } // loop on eos._edges to create nodes
10263 if ( !getMeshDS()->IsEmbeddedMode() )
10264 // Log node movement
10265 for ( size_t i = 0; i < eos._edges.size(); ++i )
10267 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
10268 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
10275 helper.SetElementsOnShape(true);
10277 vector< vector<const SMDS_MeshNode*>* > nnVec;
10278 set< vector<const SMDS_MeshNode*>* > nnSet;
10279 set< int > degenEdgeInd;
10280 vector<const SMDS_MeshElement*> degenVols;
10282 TopExp_Explorer exp( data._solid, TopAbs_FACE );
10283 for ( ; exp.More(); exp.Next() )
10285 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
10286 if ( data._ignoreFaceIds.count( faceID ))
10288 _EdgesOnShape* eos = data.GetShapeEdges( faceID );
10289 SMDS_MeshGroup* group = StdMeshers_ViscousLayers::CreateGroup( eos->_hyp.GetGroupName(),
10292 std::vector< const SMDS_MeshElement* > vols;
10293 const bool isReversedFace = data._reversedFaceIds.count( faceID );
10294 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
10295 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
10296 while ( fIt->more() )
10298 const SMDS_MeshElement* face = fIt->next();
10299 const int nbNodes = face->NbCornerNodes();
10300 nnVec.resize( nbNodes );
10302 degenEdgeInd.clear();
10303 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
10304 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
10305 for ( int iN = 0; iN < nbNodes; ++iN )
10307 const SMDS_MeshNode* n = nIt->next();
10308 _LayerEdge* edge = data._n2eMap[ n ];
10309 const int i = isReversedFace ? nbNodes-1-iN : iN;
10310 nnVec[ i ] = & edge->_nodes;
10311 maxZ = std::max( maxZ, nnVec[ i ]->size() );
10312 minZ = std::min( minZ, nnVec[ i ]->size() );
10314 if ( helper.HasDegeneratedEdges() )
10315 nnSet.insert( nnVec[ i ]);
10320 if ( 0 < nnSet.size() && nnSet.size() < 3 )
10324 const SMDS_MeshElement* vol;
10331 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10333 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
10334 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
10335 vols.push_back( vol );
10338 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10340 for ( int iN = 0; iN < nbNodes; ++iN )
10341 if ( nnVec[ iN ]->size() < iZ+1 )
10342 degenEdgeInd.insert( iN );
10344 if ( degenEdgeInd.size() == 1 ) // PYRAM
10346 int i2 = *degenEdgeInd.begin();
10347 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
10348 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
10349 vol = helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
10350 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
10351 vols.push_back( vol );
10355 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
10356 vol = helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
10357 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
10358 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
10359 (*nnVec[ i3 ])[ iZ ]);
10360 vols.push_back( vol );
10368 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10370 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
10371 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
10372 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
10373 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
10374 vols.push_back( vol );
10377 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10379 for ( int iN = 0; iN < nbNodes; ++iN )
10380 if ( nnVec[ iN ]->size() < iZ+1 )
10381 degenEdgeInd.insert( iN );
10383 switch ( degenEdgeInd.size() )
10387 int i2 = *degenEdgeInd.begin();
10388 int i3 = *degenEdgeInd.rbegin();
10389 bool ok = ( i3 - i2 == 1 );
10390 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
10391 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
10392 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
10394 vol = helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
10395 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
10396 vols.push_back( vol );
10398 degenVols.push_back( vol );
10402 default: // degen HEX
10404 vol = helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
10405 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
10406 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
10407 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
10408 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
10409 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
10410 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
10411 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
10412 vols.push_back( vol );
10413 degenVols.push_back( vol );
10420 return error("Not supported type of element", data._index);
10422 } // switch ( nbNodes )
10425 for ( size_t i = 0; i < vols.size(); ++i )
10426 group->Add( vols[ i ]);
10428 } // while ( fIt->more() )
10431 if ( !degenVols.empty() )
10433 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
10434 if ( !err || err->IsOK() )
10436 SMESH_BadInputElements* badElems =
10437 new SMESH_BadInputElements( getMeshDS(), COMPERR_WARNING, "Bad quality volumes created" );
10438 badElems->myBadElements.insert( badElems->myBadElements.end(),
10439 degenVols.begin(),degenVols.end() );
10440 err.reset( badElems );
10447 namespace VISCOUS_3D
10450 //--------------------------------------------------------------------------------
10452 * \brief Pair of periodic FACEs
10454 struct PeriodicFaces
10456 typedef StdMeshers_ProjectionUtils::TrsfFinder3D Trsf;
10458 ShrinkFace* _shriFace[2];
10459 TNodeNodeMap _nnMap;
10462 PeriodicFaces( ShrinkFace* sf1, ShrinkFace* sf2 ): _shriFace{ sf1, sf2 } {}
10463 bool IncludeShrunk( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces ) const;
10464 bool MoveNodes( const TopoDS_Face& tgtFace );
10465 void Clear() { _nnMap.clear(); }
10466 bool IsEmpty() const { return _nnMap.empty(); }
10469 //--------------------------------------------------------------------------------
10471 * \brief Shrink FACE data used to find periodic FACEs
10475 // ................................................................................
10476 struct BndPart //!< part of FACE boundary, either shrink or no-shrink
10478 bool _isShrink, _isReverse;
10481 std::vector< SMESH_NodeXYZ > _nodes;
10482 TopAbs_ShapeEnum _vertSWOLType[2]; // shrink part includes VERTEXes
10483 AverageHyp* _vertHyp[2];
10486 _isShrink(0), _isReverse(0), _nbSegments(0), _hyp(0),
10487 _vertSWOLType{ TopAbs_WIRE, TopAbs_WIRE }, _vertHyp{ 0, 0 }
10490 bool operator==( const BndPart& other ) const
10492 return ( _isShrink == other._isShrink &&
10493 _nbSegments == other._nbSegments &&
10494 _nodes.size() == other._nodes.size() &&
10495 vertSWOLType1() == other.vertSWOLType1() &&
10496 vertSWOLType2() == other.vertSWOLType2() &&
10498 ( *_hyp == *other._hyp &&
10499 vertHyp1() == other.vertHyp1() &&
10500 vertHyp2() == other.vertHyp2() ))
10503 bool CanAppend( const BndPart& other )
10505 return ( _isShrink == other._isShrink &&
10507 ( *_hyp == *other._hyp &&
10508 *_hyp == vertHyp2() &&
10509 vertHyp2() == other.vertHyp1() ))
10512 void Append( const BndPart& other )
10514 _nbSegments += other._nbSegments;
10515 bool hasCommonNode = ( _nodes.back()->GetID() == other._nodes.front()->GetID() );
10516 _nodes.insert( _nodes.end(), other._nodes.begin() + hasCommonNode, other._nodes.end() );
10517 _vertSWOLType[1] = other._vertSWOLType[1];
10519 _vertHyp[1] = other._vertHyp[1];
10521 const SMDS_MeshNode* Node(size_t i) const
10523 return _nodes[ _isReverse ? ( _nodes.size() - 1 - i ) : i ]._node;
10525 void Reverse() { _isReverse = !_isReverse; }
10526 const TopAbs_ShapeEnum& vertSWOLType1() const { return _vertSWOLType[ _isReverse ]; }
10527 const TopAbs_ShapeEnum& vertSWOLType2() const { return _vertSWOLType[ !_isReverse ]; }
10528 const AverageHyp& vertHyp1() const { return *(_vertHyp[ _isReverse ]); }
10529 const AverageHyp& vertHyp2() const { return *(_vertHyp[ !_isReverse ]); }
10531 // ................................................................................
10533 SMESH_subMesh* _subMesh;
10534 _SolidData* _data1;
10535 _SolidData* _data2;
10536 //bool _isPeriodic;
10538 std::list< BndPart > _boundary;
10539 int _boundarySize, _nbBoundaryParts;
10541 void Init( SMESH_subMesh* sm, _SolidData* sd1, _SolidData* sd2 )
10543 _subMesh = sm; _data1 = sd1; _data2 = sd2; //_isPeriodic = false;
10545 bool IsSame( const TopoDS_Face& face ) const
10547 return _subMesh->GetSubShape().IsSame( face );
10549 bool IsShrunk( const TopTools_MapOfShape& shrunkFaces ) const
10551 return shrunkFaces.Contains( _subMesh->GetSubShape() );
10554 //================================================================================
10556 * Check if meshes on two FACEs are equal
10558 bool IsPeriodic( ShrinkFace& other, PeriodicFaces& periodic )
10560 if ( !IsSameNbElements( other ))
10563 this->SetBoundary();
10564 other.SetBoundary();
10565 if ( this->_boundarySize != other._boundarySize ||
10566 this->_nbBoundaryParts != other._nbBoundaryParts )
10569 for ( int isReverse = 0; isReverse < 2; ++isReverse )
10572 Reverse( _boundary );
10574 // check boundaries
10575 bool equalBoundary = false;
10576 for ( int iP = 0; iP < _nbBoundaryParts && !equalBoundary; ++iP )
10578 if ( ! ( equalBoundary = ( this->_boundary == other._boundary )))
10579 // set first part at end
10580 _boundary.splice( _boundary.end(), _boundary, _boundary.begin() );
10582 if ( !equalBoundary )
10585 // check connectivity
10586 std::set<const SMDS_MeshElement*> elemsThis, elemsOther;
10587 this->GetElements( elemsThis );
10588 other.GetElements( elemsOther );
10589 SMESH_MeshEditor::Sew_Error err =
10590 SMESH_MeshEditor::FindMatchingNodes( elemsThis, elemsOther,
10591 this->_boundary.front().Node(0),
10592 other._boundary.front().Node(0),
10593 this->_boundary.front().Node(1),
10594 other._boundary.front().Node(1),
10596 if ( err != SMESH_MeshEditor::SEW_OK )
10599 // check node positions
10600 std::vector< gp_XYZ > srcPnts, tgtPnts;
10601 this->GetBoundaryPoints( srcPnts );
10602 other.GetBoundaryPoints( tgtPnts );
10603 if ( !periodic._trsf.Solve( srcPnts, tgtPnts )) {
10606 double tol = std::numeric_limits<double>::max();
10607 for ( size_t i = 1; i < srcPnts.size(); ++i ) {
10608 tol = Min( tol, ( srcPnts[i-1] - srcPnts[i] ).SquareModulus() );
10610 tol = 0.01 * Sqrt( tol );
10611 bool nodeCoincide = true;
10612 TNodeNodeMap::iterator n2n = periodic._nnMap.begin();
10613 for ( ; n2n != periodic._nnMap.end() && nodeCoincide; ++n2n )
10615 SMESH_NodeXYZ nSrc = n2n->first;
10616 SMESH_NodeXYZ nTgt = n2n->second;
10617 gp_XYZ pTgt = periodic._trsf.Transform( nSrc );
10618 nodeCoincide = (( pTgt - nTgt ).SquareModulus() < tol );
10620 if ( nodeCoincide )
10626 bool IsSameNbElements( ShrinkFace& other ) // check number of mesh faces
10628 SMESHDS_SubMesh* sm1 = this->_subMesh->GetSubMeshDS();
10629 SMESHDS_SubMesh* sm2 = other._subMesh->GetSubMeshDS();
10630 return ( sm1->NbElements() == sm2->NbElements() &&
10631 sm1->NbNodes() == sm2->NbNodes() );
10634 void Reverse( std::list< BndPart >& boundary )
10636 boundary.reverse();
10637 for ( std::list< BndPart >::iterator part = boundary.begin(); part != boundary.end(); ++part )
10643 if ( !_boundary.empty() )
10646 TopoDS_Face F = TopoDS::Face( _subMesh->GetSubShape() );
10647 if ( F.Orientation() >= TopAbs_INTERNAL ) F.Orientation( TopAbs_FORWARD );
10648 std::list< TopoDS_Edge > edges;
10649 std::list< int > nbEdgesInWire;
10650 /*int nbWires =*/ SMESH_Block::GetOrderedEdges (F, edges, nbEdgesInWire);
10652 // std::list< TopoDS_Edge >::iterator edgesEnd = edges.end();
10653 // if ( nbWires > 1 ) {
10654 // edgesEnd = edges.begin();
10655 // std::advance( edgesEnd, nbEdgesInWire.front() );
10657 StdMeshers_FaceSide fSide( F, edges, _subMesh->GetFather(),
10658 /*fwd=*/true, /*skipMedium=*/true );
10659 _boundarySize = fSide.NbSegments();
10661 //TopoDS_Vertex vv[2];
10662 //std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
10663 for ( int iE = 0; iE < nbEdgesInWire.front(); ++iE )
10666 _EdgesOnShape* eos = _data1->GetShapeEdges( fSide.EdgeID( iE ));
10668 bndPart._isShrink = ( eos->SWOLType() == TopAbs_FACE );
10669 if ( bndPart._isShrink )
10670 if (( _data1->_noShrinkShapes.count( eos->_shapeID )) ||
10671 ( _data2 && _data2->_noShrinkShapes.count( eos->_shapeID )))
10672 bndPart._isShrink = false;
10674 if ( bndPart._isShrink )
10676 bndPart._hyp = & eos->_hyp;
10677 _EdgesOnShape* eov[2] = { _data1->GetShapeEdges( fSide.FirstVertex( iE )),
10678 _data1->GetShapeEdges( fSide.LastVertex ( iE )) };
10679 for ( int iV = 0; iV < 2; ++iV )
10681 bndPart._vertHyp [iV] = & eov[iV]->_hyp;
10682 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
10683 if ( _data1->_noShrinkShapes.count( eov[iV]->_shapeID ))
10684 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
10685 if ( _data2 && bndPart._vertSWOLType[iV] != TopAbs_SHAPE )
10687 eov[iV] = _data2->GetShapeEdges( iV ? fSide.LastVertex(iE) : fSide.FirstVertex(iE ));
10688 if ( _data2->_noShrinkShapes.count( eov[iV]->_shapeID ))
10689 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
10690 else if ( eov[iV]->SWOLType() > bndPart._vertSWOLType[iV] )
10691 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
10695 std::vector<const SMDS_MeshNode*> nodes = fSide.GetOrderedNodes( iE );
10696 bndPart._nodes.assign( nodes.begin(), nodes.end() );
10697 bndPart._nbSegments = bndPart._nodes.size() - 1;
10699 if ( _boundary.empty() || ! _boundary.back().CanAppend( bndPart ))
10700 _boundary.push_back( bndPart );
10702 _boundary.back().Append( bndPart );
10705 _nbBoundaryParts = _boundary.size();
10706 if ( _nbBoundaryParts > 1 && _boundary.front()._isShrink == _boundary.back()._isShrink )
10708 _boundary.back().Append( _boundary.front() );
10709 _boundary.pop_front();
10710 --_nbBoundaryParts;
10714 void GetElements( std::set<const SMDS_MeshElement*>& theElems)
10716 if ( SMESHDS_SubMesh* sm = _subMesh->GetSubMeshDS() )
10717 for ( SMDS_ElemIteratorPtr fIt = sm->GetElements(); fIt->more(); )
10718 theElems.insert( theElems.end(), fIt->next() );
10723 void GetBoundaryPoints( std::vector< gp_XYZ >& points )
10725 points.reserve( _boundarySize );
10726 size_t nb = _boundary.rbegin()->_nodes.size();
10727 int lastID = _boundary.rbegin()->Node( nb - 1 )->GetID();
10728 std::list< BndPart >::const_iterator part = _boundary.begin();
10729 for ( ; part != _boundary.end(); ++part )
10731 size_t nb = part->_nodes.size();
10733 size_t iR = nb - 1;
10734 size_t* i = part->_isReverse ? &iR : &iF;
10735 if ( part->_nodes[ *i ]->GetID() == lastID )
10737 for ( ; iF < nb; ++iF, --iR )
10738 points.push_back( part->_nodes[ *i ]);
10740 lastID = part->_nodes[ *i ]->GetID();
10743 }; // struct ShrinkFace
10745 //--------------------------------------------------------------------------------
10747 * \brief Periodic FACEs
10751 std::vector< ShrinkFace > _shrinkFaces;
10752 std::vector< PeriodicFaces > _periodicFaces;
10754 PeriodicFaces* GetPeriodic( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces )
10756 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
10757 if ( _periodicFaces[ i ].IncludeShrunk( face, shrunkFaces ))
10758 return & _periodicFaces[ i ];
10761 void ClearPeriodic( const TopoDS_Face& face )
10763 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
10764 if ( _periodicFaces[ i ]._shriFace[0]->IsSame( face ) ||
10765 _periodicFaces[ i ]._shriFace[1]->IsSame( face ))
10766 _periodicFaces[ i ].Clear();
10770 //================================================================================
10772 * Check if a pair includes the given FACE and the other FACE is already shrunk
10774 bool PeriodicFaces::IncludeShrunk( const TopoDS_Face& face,
10775 const TopTools_MapOfShape& shrunkFaces ) const
10777 if ( IsEmpty() ) return false;
10778 return (( _shriFace[0]->IsSame( face ) && _shriFace[1]->IsShrunk( shrunkFaces )) ||
10779 ( _shriFace[1]->IsSame( face ) && _shriFace[0]->IsShrunk( shrunkFaces )));
10782 //================================================================================
10784 * Make equal meshes on periodic faces by moving corresponding nodes
10786 bool PeriodicFaces::MoveNodes( const TopoDS_Face& tgtFace )
10788 int iTgt = _shriFace[1]->IsSame( tgtFace );
10789 int iSrc = 1 - iTgt;
10791 _SolidData* dataSrc = _shriFace[iSrc]->_data1;
10792 _SolidData* dataTgt = _shriFace[iTgt]->_data1;
10794 Trsf * trsf = & _trsf, trsfInverse;
10797 trsfInverse = _trsf;
10798 if ( !trsfInverse.Invert())
10800 trsf = &trsfInverse;
10802 SMESHDS_Mesh* meshDS = dataSrc->GetHelper().GetMeshDS();
10804 TNode2Edge::iterator n2e;
10805 TNodeNodeMap::iterator n2n = _nnMap.begin();
10806 for ( ; n2n != _nnMap.end(); ++n2n )
10808 const SMDS_MeshNode* const* nn = & n2n->first;
10809 const SMDS_MeshNode* nSrc = nn[ iSrc ];
10810 const SMDS_MeshNode* nTgt = nn[ iTgt ];
10812 if (( nSrc->GetPosition()->GetDim() == 2 ) ||
10813 (( n2e = dataSrc->_n2eMap.find( nSrc )) == dataSrc->_n2eMap.end() ))
10815 SMESH_NodeXYZ pSrc = nSrc;
10816 gp_XYZ pTgt = trsf->Transform( pSrc );
10817 meshDS->MoveNode( nTgt, pTgt.X(), pTgt.Y(), pTgt.Z() );
10821 _LayerEdge* leSrc = n2e->second;
10822 n2e = dataTgt->_n2eMap.find( nTgt );
10823 if ( n2e == dataTgt->_n2eMap.end() )
10825 _LayerEdge* leTgt = n2e->second;
10826 if ( leSrc->_nodes.size() != leTgt->_nodes.size() )
10828 for ( size_t iN = 1; iN < leSrc->_nodes.size(); ++iN )
10830 SMESH_NodeXYZ pSrc = leSrc->_nodes[ iN ];
10831 gp_XYZ pTgt = trsf->Transform( pSrc );
10832 meshDS->MoveNode( leTgt->_nodes[ iN ], pTgt.X(), pTgt.Y(), pTgt.Z() );
10836 bool done = ( n2n == _nnMap.end() );
10837 debugMsg( "PeriodicFaces::MoveNodes "
10838 << _shriFace[iSrc]->_subMesh->GetId() << " -> "
10839 << _shriFace[iTgt]->_subMesh->GetId() << " -- "
10840 << ( done ? "DONE" : "FAIL"));
10844 } // namespace VISCOUS_3D; Periodicity part
10847 //================================================================================
10849 * \brief Find FACEs to shrink, that are equally meshed before shrink (i.e. periodic)
10850 * and should remain equal after shrink
10852 //================================================================================
10854 void _ViscousBuilder::findPeriodicFaces()
10856 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
10857 // _LayerEdge's inflated along FACE or EDGE)
10858 std::map< TGeomID, std::list< _SolidData* > > id2sdMap;
10859 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
10861 _SolidData& data = _sdVec[i];
10862 std::map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
10863 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
10864 if ( s2s->second.ShapeType() == TopAbs_FACE )
10865 id2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
10868 _periodicity.reset( new Periodicity );
10869 _periodicity->_shrinkFaces.resize( id2sdMap.size() );
10871 std::map< TGeomID, std::list< _SolidData* > >::iterator id2sdIt = id2sdMap.begin();
10872 for ( size_t i = 0; i < id2sdMap.size(); ++i, ++id2sdIt )
10874 _SolidData* sd1 = id2sdIt->second.front();
10875 _SolidData* sd2 = id2sdIt->second.back();
10876 _periodicity->_shrinkFaces[ i ].Init( _mesh->GetSubMeshContaining( id2sdIt->first ), sd1, sd2 );
10879 for ( size_t i1 = 0; i1 < _periodicity->_shrinkFaces.size(); ++i1 )
10880 for ( size_t i2 = i1 + 1; i2 < _periodicity->_shrinkFaces.size(); ++i2 )
10882 PeriodicFaces pf( & _periodicity->_shrinkFaces[ i1 ],
10883 & _periodicity->_shrinkFaces[ i2 ]);
10884 if ( pf._shriFace[0]->IsPeriodic( *pf._shriFace[1], pf ))
10886 _periodicity->_periodicFaces.push_back( pf );
10892 //================================================================================
10894 * \brief Shrink 2D mesh on faces to let space for inflated layers
10896 //================================================================================
10898 bool _ViscousBuilder::shrink(_SolidData& theData)
10900 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
10901 // _LayerEdge's inflated along FACE or EDGE)
10902 map< TGeomID, list< _SolidData* > > f2sdMap;
10903 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
10905 _SolidData& data = _sdVec[i];
10906 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
10907 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
10908 if ( s2s->second.ShapeType() == TopAbs_FACE && !_shrunkFaces.Contains( s2s->second ))
10910 f2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
10912 // Put mesh faces on the shrunk FACE to the proxy sub-mesh to avoid
10913 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
10914 // by StdMeshers_QuadToTriaAdaptor
10915 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
10917 SMESH_ProxyMesh::SubMesh* proxySub =
10918 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
10919 if ( proxySub->NbElements() == 0 )
10921 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
10922 while ( fIt->more() )
10924 const SMDS_MeshElement* f = fIt->next();
10925 // as a result 3D algo will use elements from proxySub and not from smDS
10926 proxySub->AddElement( f );
10927 f->setIsMarked( true );
10929 // Mark nodes on the FACE to discriminate them from nodes
10930 // added by addBoundaryElements(); marked nodes are to be smoothed while shrink()
10931 for ( int iN = 0, nbN = f->NbNodes(); iN < nbN; ++iN )
10933 const SMDS_MeshNode* n = f->GetNode( iN );
10934 if ( n->GetPosition()->GetDim() == 2 )
10935 n->setIsMarked( true );
10943 SMESH_MesherHelper helper( *_mesh );
10944 helper.ToFixNodeParameters( true );
10947 map< TGeomID, _Shrinker1D > e2shrMap;
10948 vector< _EdgesOnShape* > subEOS;
10949 vector< _LayerEdge* > lEdges;
10951 // loop on FACEs to shrink mesh on
10952 map< TGeomID, list< _SolidData* > >::iterator f2sd = f2sdMap.begin();
10953 for ( ; f2sd != f2sdMap.end(); ++f2sd )
10955 list< _SolidData* > & dataList = f2sd->second;
10956 if ( dataList.front()->_n2eMap.empty() ||
10957 dataList.back() ->_n2eMap.empty() )
10958 continue; // not yet computed
10959 if ( dataList.front() != &theData &&
10960 dataList.back() != &theData )
10963 _SolidData& data = *dataList.front();
10964 _SolidData* data2 = dataList.size() > 1 ? dataList.back() : 0;
10965 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
10966 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
10967 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
10969 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
10971 _shrunkFaces.Add( F );
10972 helper.SetSubShape( F );
10974 // ==============================
10975 // Use periodicity to move nodes
10976 // ==============================
10978 PeriodicFaces* periodic = _periodicity->GetPeriodic( F, _shrunkFaces );
10979 bool movedByPeriod = ( periodic && periodic->MoveNodes( F ));
10981 // ===========================
10982 // Prepare data for shrinking
10983 // ===========================
10985 // Collect nodes to smooth (they are marked at the beginning of this method)
10986 vector < const SMDS_MeshNode* > smoothNodes;
10988 if ( !movedByPeriod )
10990 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
10991 while ( nIt->more() )
10993 const SMDS_MeshNode* n = nIt->next();
10994 if ( n->isMarked() )
10995 smoothNodes.push_back( n );
10998 // Find out face orientation
10999 double refSign = 1;
11000 const set<TGeomID> ignoreShapes;
11002 if ( !smoothNodes.empty() )
11004 vector<_Simplex> simplices;
11005 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
11006 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of simplex nodes
11007 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
11008 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
11009 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper, refSign ))
11013 // Find _LayerEdge's inflated along F
11017 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
11018 /*complexFirst=*/true); //!!!
11019 while ( subIt->more() )
11021 const TGeomID subID = subIt->next()->GetId();
11022 if ( data._noShrinkShapes.count( subID ))
11024 _EdgesOnShape* eos = data.GetShapeEdges( subID );
11025 if ( !eos || eos->_sWOL.IsNull() )
11026 if ( data2 ) // check in adjacent SOLID
11028 eos = data2->GetShapeEdges( subID );
11029 if ( !eos || eos->_sWOL.IsNull() )
11032 subEOS.push_back( eos );
11034 if ( !movedByPeriod )
11035 for ( size_t i = 0; i < eos->_edges.size(); ++i )
11037 lEdges.push_back( eos->_edges[ i ] );
11038 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
11043 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
11044 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11045 while ( fIt->more() )
11046 if ( const SMDS_MeshElement* f = fIt->next() )
11047 dumpChangeNodes( f );
11050 // Replace source nodes by target nodes in mesh faces to shrink
11051 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
11052 const SMDS_MeshNode* nodes[20];
11053 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11055 _EdgesOnShape& eos = * subEOS[ iS ];
11056 for ( size_t i = 0; i < eos._edges.size(); ++i )
11058 _LayerEdge& edge = *eos._edges[i];
11059 const SMDS_MeshNode* srcNode = edge._nodes[0];
11060 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11061 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
11062 while ( fIt->more() )
11064 const SMDS_MeshElement* f = fIt->next();
11065 if ( !smDS->Contains( f ) || !f->isMarked() )
11067 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
11068 for ( int iN = 0; nIt->more(); ++iN )
11070 const SMDS_MeshNode* n = nIt->next();
11071 nodes[iN] = ( n == srcNode ? tgtNode : n );
11073 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
11074 dumpChangeNodes( f );
11080 // find out if a FACE is concave
11081 const bool isConcaveFace = isConcave( F, helper );
11083 // Create _SmoothNode's on face F
11084 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
11086 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
11087 const bool sortSimplices = isConcaveFace;
11088 for ( size_t i = 0; i < smoothNodes.size(); ++i )
11090 const SMDS_MeshNode* n = smoothNodes[i];
11091 nodesToSmooth[ i ]._node = n;
11092 // src nodes must be already replaced by tgt nodes to have tgt nodes in _simplices
11093 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
11094 // fix up incorrect uv of nodes on the FACE
11095 helper.GetNodeUV( F, n, 0, &isOkUV);
11100 //if ( nodesToSmooth.empty() ) continue;
11102 // Find EDGE's to shrink and set simpices to LayerEdge's
11103 set< _Shrinker1D* > eShri1D;
11105 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11107 _EdgesOnShape& eos = * subEOS[ iS ];
11108 if ( eos.SWOLType() == TopAbs_EDGE )
11110 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
11111 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
11112 if ( !movedByPeriod )
11114 _Shrinker1D& shrinker = e2shrMap[ edgeSM->GetId() ];
11115 eShri1D.insert( & shrinker );
11116 shrinker.AddEdge( eos._edges[0], eos, helper );
11117 // restore params of nodes on EDGE if the EDGE has been already
11118 // shrunk while shrinking other FACE
11119 shrinker.RestoreParams();
11122 for ( size_t i = 0; i < eos._edges.size(); ++i )
11124 _LayerEdge& edge = * eos._edges[i];
11125 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
11127 // additionally mark tgt node; only marked nodes will be used in SetNewLength2d()
11128 // not-marked nodes are those added by refine()
11129 edge._nodes.back()->setIsMarked( true );
11134 bool toFixTria = false; // to improve quality of trias by diagonal swap
11135 if ( isConcaveFace && !movedByPeriod )
11137 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
11138 if ( hasTria != hasQuad ) {
11139 toFixTria = hasTria;
11142 set<int> nbNodesSet;
11143 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11144 while ( fIt->more() && nbNodesSet.size() < 2 )
11145 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
11146 toFixTria = ( *nbNodesSet.begin() == 3 );
11150 // ==================
11151 // Perform shrinking
11152 // ==================
11154 bool shrunk = !movedByPeriod;
11155 int nbBad, shriStep=0, smooStep=0;
11156 _SmoothNode::SmoothType smoothType
11157 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
11158 SMESH_Comment errMsg;
11162 // Move boundary nodes (actually just set new UV)
11163 // -----------------------------------------------
11164 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
11166 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11168 _EdgesOnShape& eos = * subEOS[ iS ];
11169 for ( size_t i = 0; i < eos._edges.size(); ++i )
11171 shrunk |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
11176 // Move nodes on EDGE's
11177 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
11178 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
11179 for ( ; shr != eShri1D.end(); ++shr )
11180 (*shr)->Compute( /*set3D=*/false, helper );
11183 // -----------------
11184 int nbNoImpSteps = 0;
11187 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
11189 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11191 int oldBadNb = nbBad;
11194 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
11195 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
11196 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11198 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
11199 smooTy, /*set3D=*/isConcaveFace);
11201 if ( nbBad < oldBadNb )
11211 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
11212 if ( shriStep > 200 )
11213 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
11214 if ( !errMsg.empty() )
11217 // Fix narrow triangles by swapping diagonals
11218 // ---------------------------------------
11221 set<const SMDS_MeshNode*> usedNodes;
11222 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
11224 // update working data
11225 set<const SMDS_MeshNode*>::iterator n;
11226 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
11228 n = usedNodes.find( nodesToSmooth[ i ]._node );
11229 if ( n != usedNodes.end())
11231 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
11232 nodesToSmooth[ i ]._simplices,
11233 ignoreShapes, NULL,
11234 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
11235 usedNodes.erase( n );
11238 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
11240 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
11241 if ( n != usedNodes.end())
11243 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
11244 lEdges[i]->_simplices,
11246 usedNodes.erase( n );
11250 // TODO: check effect of this additional smooth
11251 // additional laplacian smooth to increase allowed shrink step
11252 // for ( int st = 1; st; --st )
11254 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11255 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11257 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11258 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
11262 } // while ( shrunk )
11264 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
11266 debugMsg( "Re-compute FACE " << f2sd->first << " because " << errMsg );
11269 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
11271 vector< const SMDS_MeshElement* > facesToRm;
11274 facesToRm.reserve( psm->NbElements() );
11275 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
11276 facesToRm.push_back( ite->next() );
11278 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11279 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11282 for ( size_t i = 0; i < facesToRm.size(); ++i )
11283 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
11287 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
11288 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
11289 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11290 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
11291 subEOS[iS]->_edges[i]->_nodes.end() );
11293 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
11294 while ( itn->more() ) {
11295 const SMDS_MeshNode* n = itn->next();
11296 if ( !nodesToKeep.count( n ))
11297 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
11300 _periodicity->ClearPeriodic( F );
11302 // restore position and UV of target nodes
11304 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11305 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11307 _LayerEdge* edge = subEOS[iS]->_edges[i];
11308 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
11309 if ( edge->_pos.empty() ||
11310 edge->Is( _LayerEdge::SHRUNK )) continue;
11311 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
11313 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11314 pos->SetUParameter( edge->_pos[0].X() );
11315 pos->SetVParameter( edge->_pos[0].Y() );
11316 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
11320 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11321 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
11322 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
11324 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11325 dumpMove( tgtNode );
11327 // shrink EDGE sub-meshes and set proxy sub-meshes
11328 UVPtStructVec uvPtVec;
11329 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
11330 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
11332 _Shrinker1D* shr = (*shrIt);
11333 shr->Compute( /*set3D=*/true, helper );
11335 // set proxy mesh of EDGEs w/o layers
11336 map< double, const SMDS_MeshNode* > nodes;
11337 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
11338 // remove refinement nodes
11339 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
11340 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
11341 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
11342 if ( u2n->second == sn0 || u2n->second == sn1 )
11344 while ( u2n->second != tn0 && u2n->second != tn1 )
11346 nodes.erase( nodes.begin(), u2n );
11348 u2n = --nodes.end();
11349 if ( u2n->second == sn0 || u2n->second == sn1 )
11351 while ( u2n->second != tn0 && u2n->second != tn1 )
11353 nodes.erase( ++u2n, nodes.end() );
11355 // set proxy sub-mesh
11356 uvPtVec.resize( nodes.size() );
11357 u2n = nodes.begin();
11358 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
11359 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
11361 uvPtVec[ i ].node = u2n->second;
11362 uvPtVec[ i ].param = u2n->first;
11363 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
11365 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
11366 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11369 // set proxy mesh of EDGEs with layers
11370 vector< _LayerEdge* > edges;
11371 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11373 _EdgesOnShape& eos = * subEOS[ iS ];
11374 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
11376 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
11377 data.SortOnEdge( E, eos._edges );
11380 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
11381 if ( !eov->_edges.empty() )
11382 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
11384 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
11386 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
11387 if ( !eov->_edges.empty() )
11388 edges.push_back( eov->_edges[0] ); // on last VERTEX
11390 uvPtVec.resize( edges.size() );
11391 for ( size_t i = 0; i < edges.size(); ++i )
11393 uvPtVec[ i ].node = edges[i]->_nodes.back();
11394 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
11395 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
11397 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
11398 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
11399 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11401 // temporary clear the FACE sub-mesh from faces made by refine()
11402 vector< const SMDS_MeshElement* > elems;
11403 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
11404 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11405 elems.push_back( ite->next() );
11406 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
11407 elems.push_back( ite->next() );
11410 // compute the mesh on the FACE
11411 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
11412 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
11414 // re-fill proxy sub-meshes of the FACE
11415 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11416 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11417 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11418 psm->AddElement( ite->next() );
11421 for ( size_t i = 0; i < elems.size(); ++i )
11422 smDS->AddElement( elems[i] );
11424 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
11425 return error( errMsg );
11427 } // end of re-meshing in case of failed smoothing
11428 else if ( !movedByPeriod )
11430 // No wrongly shaped faces remain; final smooth. Set node XYZ.
11431 bool isStructuredFixed = false;
11432 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
11433 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
11434 if ( !isStructuredFixed )
11436 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
11437 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
11439 for ( int st = 3; st; --st )
11442 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
11443 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
11444 case 3: smoothType = _SmoothNode::ANGULAR; break;
11446 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11447 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11449 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11450 smoothType,/*set3D=*/st==1 );
11455 if ( !getMeshDS()->IsEmbeddedMode() )
11456 // Log node movement
11457 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11459 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
11460 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
11464 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
11465 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
11467 VISCOUS_3D::ToClearSubWithMain( sm, data2->_solid );
11469 } // loop on FACES to shrink mesh on
11472 // Replace source nodes by target nodes in shrunk mesh edges
11474 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
11475 for ( ; e2shr != e2shrMap.end(); ++e2shr )
11476 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
11481 //================================================================================
11483 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
11485 //================================================================================
11487 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
11488 _EdgesOnShape& eos,
11489 SMESH_MesherHelper& helper,
11490 const SMESHDS_SubMesh* faceSubMesh)
11492 const SMDS_MeshNode* srcNode = edge._nodes[0];
11493 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11495 if ( eos.SWOLType() == TopAbs_FACE )
11497 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
11500 edge.Set( _LayerEdge::SHRUNK );
11501 return srcNode == tgtNode;
11503 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
11504 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
11505 gp_Vec2d uvDir( srcUV, tgtUV );
11506 double uvLen = uvDir.Magnitude();
11508 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
11511 //edge._pos.resize(1);
11512 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
11514 // set UV of source node to target node
11515 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11516 pos->SetUParameter( srcUV.X() );
11517 pos->SetVParameter( srcUV.Y() );
11519 else // _sWOL is TopAbs_EDGE
11521 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
11524 edge.Set( _LayerEdge::SHRUNK );
11525 return srcNode == tgtNode;
11527 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11528 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
11529 if ( !edgeSM || edgeSM->NbElements() == 0 )
11530 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11532 const SMDS_MeshNode* n2 = 0;
11533 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
11534 while ( eIt->more() && !n2 )
11536 const SMDS_MeshElement* e = eIt->next();
11537 if ( !edgeSM->Contains(e)) continue;
11538 n2 = e->GetNode( 0 );
11539 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
11542 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11544 if ( n2 == tgtNode ) // for 3D_mesh_GHS3D_01/B1
11546 // shrunk by other SOLID
11547 edge.Set( _LayerEdge::SHRUNK ); // ???
11551 double uSrc = helper.GetNodeU( E, srcNode, n2 );
11552 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
11553 double u2 = helper.GetNodeU( E, n2, srcNode );
11555 //edge._pos.clear();
11557 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
11559 // tgtNode is located so that it does not make faces with wrong orientation
11560 edge.Set( _LayerEdge::SHRUNK );
11563 //edge._pos.resize(1);
11564 edge._pos[0].SetCoord( U_TGT, uTgt );
11565 edge._pos[0].SetCoord( U_SRC, uSrc );
11566 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
11568 edge._simplices.resize( 1 );
11569 edge._simplices[0]._nPrev = n2;
11571 // set U of source node to the target node
11572 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11573 pos->SetUParameter( uSrc );
11578 //================================================================================
11580 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
11582 //================================================================================
11584 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
11586 if ( edge._nodes.size() == 1 )
11591 const SMDS_MeshNode* srcNode = edge._nodes[0];
11592 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
11593 if ( S.IsNull() ) return;
11597 switch ( S.ShapeType() )
11602 TopLoc_Location loc;
11603 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
11604 if ( curve.IsNull() ) return;
11605 SMDS_EdgePositionPtr ePos = srcNode->GetPosition();
11606 p = curve->Value( ePos->GetUParameter() );
11609 case TopAbs_VERTEX:
11611 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
11616 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
11617 dumpMove( srcNode );
11621 //================================================================================
11623 * \brief Try to fix triangles with high aspect ratio by swapping diagonals
11625 //================================================================================
11627 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
11628 SMESH_MesherHelper& helper,
11631 set<const SMDS_MeshNode*> * involvedNodes)
11633 SMESH::Controls::AspectRatio qualifier;
11634 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
11635 const double maxAspectRatio = is2D ? 4. : 2;
11636 _NodeCoordHelper xyz( F, helper, is2D );
11638 // find bad triangles
11640 vector< const SMDS_MeshElement* > badTrias;
11641 vector< double > badAspects;
11642 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
11643 SMDS_ElemIteratorPtr fIt = sm->GetElements();
11644 while ( fIt->more() )
11646 const SMDS_MeshElement * f = fIt->next();
11647 if ( f->NbCornerNodes() != 3 ) continue;
11648 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
11649 double aspect = qualifier.GetValue( points );
11650 if ( aspect > maxAspectRatio )
11652 badTrias.push_back( f );
11653 badAspects.push_back( aspect );
11658 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
11659 SMDS_ElemIteratorPtr fIt = sm->GetElements();
11660 while ( fIt->more() )
11662 const SMDS_MeshElement * f = fIt->next();
11663 if ( f->NbCornerNodes() == 3 )
11664 dumpChangeNodes( f );
11668 if ( badTrias.empty() )
11671 // find couples of faces to swap diagonal
11673 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
11674 vector< T2Trias > triaCouples;
11676 TIDSortedElemSet involvedFaces, emptySet;
11677 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
11680 double aspRatio [3];
11683 if ( !involvedFaces.insert( badTrias[iTia] ).second )
11685 for ( int iP = 0; iP < 3; ++iP )
11686 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
11688 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
11689 int bestCouple = -1;
11690 for ( int iSide = 0; iSide < 3; ++iSide )
11692 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
11693 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
11694 trias [iSide].first = badTrias[iTia];
11695 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
11697 if (( ! trias[iSide].second ) ||
11698 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
11699 ( ! sm->Contains( trias[iSide].second )))
11702 // aspect ratio of an adjacent tria
11703 for ( int iP = 0; iP < 3; ++iP )
11704 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
11705 double aspectInit = qualifier.GetValue( points2 );
11707 // arrange nodes as after diag-swaping
11708 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
11709 i3 = helper.WrapIndex( i1-1, 3 );
11711 i3 = helper.WrapIndex( i1+1, 3 );
11713 points1( 1+ iSide ) = points2( 1+ i3 );
11714 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
11716 // aspect ratio after diag-swaping
11717 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
11718 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
11721 // prevent inversion of a triangle
11722 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
11723 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
11724 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
11727 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
11728 bestCouple = iSide;
11731 if ( bestCouple >= 0 )
11733 triaCouples.push_back( trias[bestCouple] );
11734 involvedFaces.insert ( trias[bestCouple].second );
11738 involvedFaces.erase( badTrias[iTia] );
11741 if ( triaCouples.empty() )
11746 SMESH_MeshEditor editor( helper.GetMesh() );
11747 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
11748 for ( size_t i = 0; i < triaCouples.size(); ++i )
11750 dumpChangeNodes( triaCouples[i].first );
11751 dumpChangeNodes( triaCouples[i].second );
11752 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
11755 if ( involvedNodes )
11756 for ( size_t i = 0; i < triaCouples.size(); ++i )
11758 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
11759 triaCouples[i].first->end_nodes() );
11760 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
11761 triaCouples[i].second->end_nodes() );
11764 // just for debug dump resulting triangles
11765 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
11766 for ( size_t i = 0; i < triaCouples.size(); ++i )
11768 dumpChangeNodes( triaCouples[i].first );
11769 dumpChangeNodes( triaCouples[i].second );
11773 //================================================================================
11775 * \brief Move target node to it's final position on the FACE during shrinking
11777 //================================================================================
11779 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
11780 const TopoDS_Face& F,
11781 _EdgesOnShape& eos,
11782 SMESH_MesherHelper& helper )
11785 return false; // already at the target position
11787 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
11789 if ( eos.SWOLType() == TopAbs_FACE )
11791 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
11792 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
11793 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
11794 const double uvLen = tgtUV.Distance( curUV );
11795 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
11797 // Select shrinking step such that not to make faces with wrong orientation.
11798 double stepSize = 1e100;
11799 for ( size_t i = 0; i < _simplices.size(); ++i )
11801 if ( !_simplices[i]._nPrev->isMarked() ||
11802 !_simplices[i]._nNext->isMarked() )
11803 continue; // simplex of quadrangle created by addBoundaryElements()
11805 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
11806 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev );
11807 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext );
11808 gp_XY dirN = uvN2 - uvN1;
11809 double det = uvDir.Crossed( dirN );
11810 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
11811 gp_XY dirN2Cur = curUV - uvN1;
11812 double step = dirN.Crossed( dirN2Cur ) / det;
11814 stepSize = Min( step, stepSize );
11817 if ( uvLen <= stepSize )
11823 else if ( stepSize > 0 )
11825 newUV = curUV + uvDir.XY() * stepSize * kSafe;
11831 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11832 pos->SetUParameter( newUV.X() );
11833 pos->SetVParameter( newUV.Y() );
11836 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
11837 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11838 dumpMove( tgtNode );
11841 else // _sWOL is TopAbs_EDGE
11843 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11844 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
11845 SMDS_EdgePositionPtr tgtPos = tgtNode->GetPosition();
11847 const double u2 = helper.GetNodeU( E, n2, tgtNode );
11848 const double uSrc = _pos[0].Coord( U_SRC );
11849 const double lenTgt = _pos[0].Coord( LEN_TGT );
11851 double newU = _pos[0].Coord( U_TGT );
11852 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
11854 Set( _LayerEdge::SHRUNK );
11859 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
11861 tgtPos->SetUParameter( newU );
11863 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
11864 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
11865 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11866 dumpMove( tgtNode );
11873 //================================================================================
11875 * \brief Perform smooth on the FACE
11876 * \retval bool - true if the node has been moved
11878 //================================================================================
11880 bool _SmoothNode::Smooth(int& nbBad,
11881 Handle(Geom_Surface)& surface,
11882 SMESH_MesherHelper& helper,
11883 const double refSign,
11887 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
11889 // get uv of surrounding nodes
11890 vector<gp_XY> uv( _simplices.size() );
11891 for ( size_t i = 0; i < _simplices.size(); ++i )
11892 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
11894 // compute new UV for the node
11895 gp_XY newPos (0,0);
11896 if ( how == TFI && _simplices.size() == 4 )
11899 for ( size_t i = 0; i < _simplices.size(); ++i )
11900 if ( _simplices[i]._nOpp )
11901 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
11903 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
11905 newPos = helper.calcTFI ( 0.5, 0.5,
11906 corners[0], corners[1], corners[2], corners[3],
11907 uv[1], uv[2], uv[3], uv[0] );
11909 else if ( how == ANGULAR )
11911 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
11913 else if ( how == CENTROIDAL && _simplices.size() > 3 )
11915 // average centers of diagonals wieghted with their reciprocal lengths
11916 if ( _simplices.size() == 4 )
11918 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
11919 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
11920 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
11924 double sumWeight = 0;
11925 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
11926 for ( int i = 0; i < nb; ++i )
11929 int iTo = i + _simplices.size() - 1;
11930 for ( int j = iFrom; j < iTo; ++j )
11932 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
11933 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
11935 newPos += w * ( uv[i]+uv[i2] );
11938 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
11943 // Laplacian smooth
11944 for ( size_t i = 0; i < _simplices.size(); ++i )
11946 newPos /= _simplices.size();
11949 // count quality metrics (orientation) of triangles around the node
11950 int nbOkBefore = 0;
11951 gp_XY tgtUV = helper.GetNodeUV( face, _node );
11952 for ( size_t i = 0; i < _simplices.size(); ++i )
11953 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
11956 for ( size_t i = 0; i < _simplices.size(); ++i )
11957 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
11959 if ( nbOkAfter < nbOkBefore )
11961 nbBad += _simplices.size() - nbOkBefore;
11965 SMDS_FacePositionPtr pos = _node->GetPosition();
11966 pos->SetUParameter( newPos.X() );
11967 pos->SetVParameter( newPos.Y() );
11974 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
11975 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
11979 nbBad += _simplices.size() - nbOkAfter;
11980 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
11983 //================================================================================
11985 * \brief Computes new UV using angle based smoothing technique
11987 //================================================================================
11989 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
11990 const gp_XY& uvToFix,
11991 const double refSign)
11993 uv.push_back( uv.front() );
11995 vector< gp_XY > edgeDir ( uv.size() );
11996 vector< double > edgeSize( uv.size() );
11997 for ( size_t i = 1; i < edgeDir.size(); ++i )
11999 edgeDir [i-1] = uv[i] - uv[i-1];
12000 edgeSize[i-1] = edgeDir[i-1].Modulus();
12001 if ( edgeSize[i-1] < numeric_limits<double>::min() )
12002 edgeDir[i-1].SetX( 100 );
12004 edgeDir[i-1] /= edgeSize[i-1] * refSign;
12006 edgeDir.back() = edgeDir.front();
12007 edgeSize.back() = edgeSize.front();
12011 double sumSize = 0;
12012 for ( size_t i = 1; i < edgeDir.size(); ++i )
12014 if ( edgeDir[i-1].X() > 1. ) continue;
12016 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
12017 if ( i == edgeDir.size() ) break;
12019 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
12020 gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
12021 gp_XY bisec = norm1 + norm2;
12022 double bisecSize = bisec.Modulus();
12023 if ( bisecSize < numeric_limits<double>::min() )
12025 bisec = -edgeDir[i1] + edgeDir[i];
12026 bisecSize = bisec.Modulus();
12028 bisec /= bisecSize;
12030 gp_XY dirToN = uvToFix - p;
12031 double distToN = dirToN.Modulus();
12032 if ( bisec * dirToN < 0 )
12033 distToN = -distToN;
12035 newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
12037 sumSize += edgeSize[i1] + edgeSize[i];
12039 newPos /= /*nbEdges * */sumSize;
12043 //================================================================================
12045 * \brief Keep a _LayerEdge inflated along the EDGE
12047 //================================================================================
12049 void _Shrinker1D::AddEdge( const _LayerEdge* e,
12050 _EdgesOnShape& eos,
12051 SMESH_MesherHelper& helper )
12054 if ( _nodes.empty() )
12056 _edges[0] = _edges[1] = 0;
12059 // check _LayerEdge
12060 if ( e == _edges[0] || e == _edges[1] || e->_nodes.size() < 2 )
12062 if ( eos.SWOLType() != TopAbs_EDGE )
12063 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12064 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
12065 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12067 // store _LayerEdge
12068 _geomEdge = TopoDS::Edge( eos._sWOL );
12070 BRep_Tool::Range( _geomEdge, f,l );
12071 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
12072 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
12076 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
12077 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
12079 if ( _nodes.empty() )
12081 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
12082 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
12084 TopLoc_Location loc;
12085 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
12086 GeomAdaptor_Curve aCurve(C, f,l);
12087 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
12089 int nbExpectNodes = eSubMesh->NbNodes();
12090 _initU .reserve( nbExpectNodes );
12091 _normPar.reserve( nbExpectNodes );
12092 _nodes .reserve( nbExpectNodes );
12093 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
12094 while ( nIt->more() )
12096 const SMDS_MeshNode* node = nIt->next();
12098 // skip refinement nodes
12099 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
12100 node == tgtNode0 || node == tgtNode1 )
12102 bool hasMarkedFace = false;
12103 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
12104 while ( fIt->more() && !hasMarkedFace )
12105 hasMarkedFace = fIt->next()->isMarked();
12106 if ( !hasMarkedFace )
12109 _nodes.push_back( node );
12110 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
12111 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
12112 _normPar.push_back( len / totLen );
12117 // remove target node of the _LayerEdge from _nodes
12118 size_t nbFound = 0;
12119 for ( size_t i = 0; i < _nodes.size(); ++i )
12120 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
12121 _nodes[i] = 0, nbFound++;
12122 if ( nbFound == _nodes.size() )
12127 //================================================================================
12129 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
12131 //================================================================================
12133 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
12135 if ( _done || _nodes.empty())
12137 const _LayerEdge* e = _edges[0];
12138 if ( !e ) e = _edges[1];
12141 _done = (( !_edges[0] || _edges[0]->Is( _LayerEdge::SHRUNK )) &&
12142 ( !_edges[1] || _edges[1]->Is( _LayerEdge::SHRUNK )));
12145 if ( set3D || _done )
12147 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
12148 GeomAdaptor_Curve aCurve(C, f,l);
12151 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12153 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12154 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
12156 for ( size_t i = 0; i < _nodes.size(); ++i )
12158 if ( !_nodes[i] ) continue;
12159 double len = totLen * _normPar[i];
12160 GCPnts_AbscissaPoint discret( aCurve, len, f );
12161 if ( !discret.IsDone() )
12162 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
12163 double u = discret.Parameter();
12164 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12165 pos->SetUParameter( u );
12166 gp_Pnt p = C->Value( u );
12167 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
12172 BRep_Tool::Range( _geomEdge, f,l );
12174 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12176 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12178 for ( size_t i = 0; i < _nodes.size(); ++i )
12180 if ( !_nodes[i] ) continue;
12181 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
12182 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12183 pos->SetUParameter( u );
12188 //================================================================================
12190 * \brief Restore initial parameters of nodes on EDGE
12192 //================================================================================
12194 void _Shrinker1D::RestoreParams()
12197 for ( size_t i = 0; i < _nodes.size(); ++i )
12199 if ( !_nodes[i] ) continue;
12200 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12201 pos->SetUParameter( _initU[i] );
12206 //================================================================================
12208 * \brief Replace source nodes by target nodes in shrunk mesh edges
12210 //================================================================================
12212 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
12214 const SMDS_MeshNode* nodes[3];
12215 for ( int i = 0; i < 2; ++i )
12217 if ( !_edges[i] ) continue;
12219 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
12220 if ( !eSubMesh ) return;
12221 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
12222 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
12223 const SMDS_MeshNode* scdNode = _edges[i]->_nodes[1];
12224 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
12225 while ( eIt->more() )
12227 const SMDS_MeshElement* e = eIt->next();
12228 if ( !eSubMesh->Contains( e ) || e->GetNodeIndex( scdNode ) >= 0 )
12230 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
12231 for ( int iN = 0; iN < e->NbNodes(); ++iN )
12233 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
12234 nodes[iN] = ( n == srcNode ? tgtNode : n );
12236 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
12241 //================================================================================
12243 * \brief Creates 2D and 1D elements on boundaries of new prisms
12245 //================================================================================
12247 bool _ViscousBuilder::addBoundaryElements(_SolidData& data)
12249 SMESH_MesherHelper helper( *_mesh );
12251 vector< const SMDS_MeshNode* > faceNodes;
12253 //for ( size_t i = 0; i < _sdVec.size(); ++i )
12255 //_SolidData& data = _sdVec[i];
12256 TopTools_IndexedMapOfShape geomEdges;
12257 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
12258 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
12260 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
12261 const TGeomID edgeID = getMeshDS()->ShapeToIndex( E );
12262 if ( data._noShrinkShapes.count( edgeID ))
12265 // Get _LayerEdge's based on E
12267 map< double, const SMDS_MeshNode* > u2nodes;
12268 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
12271 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
12272 TNode2Edge & n2eMap = data._n2eMap;
12273 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
12275 //check if 2D elements are needed on E
12276 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
12277 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
12278 ledges.push_back( n2e->second );
12280 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
12281 continue; // no layers on E
12282 ledges.push_back( n2eMap[ u2n->second ]);
12284 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
12285 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
12286 int nbSharedPyram = 0;
12287 SMDS_ElemIteratorPtr vIt = tgtN1->GetInverseElementIterator(SMDSAbs_Volume);
12288 while ( vIt->more() )
12290 const SMDS_MeshElement* v = vIt->next();
12291 nbSharedPyram += int( v->GetNodeIndex( tgtN0 ) >= 0 );
12293 if ( nbSharedPyram > 1 )
12294 continue; // not free border of the pyramid
12297 faceNodes.push_back( ledges[0]->_nodes[0] );
12298 faceNodes.push_back( ledges[1]->_nodes[0] );
12299 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
12300 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
12302 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
12303 continue; // faces already created
12305 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
12306 ledges.push_back( n2eMap[ u2n->second ]);
12308 // Find out orientation and type of face to create
12310 bool reverse = false, isOnFace;
12313 map< TGeomID, TopoDS_Shape >::iterator e2f = data._shrinkShape2Shape.find( edgeID );
12314 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
12316 F = e2f->second.Oriented( TopAbs_FORWARD );
12317 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
12318 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
12319 reverse = !reverse, F.Reverse();
12320 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
12321 reverse = !reverse;
12323 else if ( !data._ignoreFaceIds.count( e2f->first ))
12325 // find FACE with layers sharing E
12326 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE, &data._solid );
12328 F = *( fIt->next() );
12330 // Find the sub-mesh to add new faces
12331 SMESHDS_SubMesh* sm = 0;
12333 sm = getMeshDS()->MeshElements( F );
12335 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
12337 return error("error in addBoundaryElements()", data._index);
12339 // Find a proxy sub-mesh of the FACE of an adjacent SOLID, which will use the new boundary
12340 // faces for 3D meshing (PAL23414)
12341 SMESHDS_SubMesh* adjSM = 0;
12344 const TGeomID faceID = sm->GetID();
12345 PShapeIteratorPtr soIt = helper.GetAncestors( F, *_mesh, TopAbs_SOLID );
12346 while ( const TopoDS_Shape* solid = soIt->next() )
12347 if ( !solid->IsSame( data._solid ))
12349 size_t iData = _solids.FindIndex( *solid ) - 1;
12350 if ( iData < _sdVec.size() &&
12351 _sdVec[ iData ]._ignoreFaceIds.count( faceID ) &&
12352 _sdVec[ iData ]._shrinkShape2Shape.count( edgeID ) == 0 )
12354 SMESH_ProxyMesh::SubMesh* proxySub =
12355 _sdVec[ iData ]._proxyMesh->getFaceSubM( TopoDS::Face( F ), /*create=*/false);
12356 if ( proxySub && proxySub->NbElements() > 0 )
12363 const int dj1 = reverse ? 0 : 1;
12364 const int dj2 = reverse ? 1 : 0;
12365 vector< const SMDS_MeshElement*> ff; // new faces row
12366 SMESHDS_Mesh* m = getMeshDS();
12367 for ( size_t j = 1; j < ledges.size(); ++j )
12369 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
12370 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
12371 ff.resize( std::max( nn1.size(), nn2.size() ), NULL );
12372 if ( nn1.size() == nn2.size() )
12375 for ( size_t z = 1; z < nn1.size(); ++z )
12376 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12378 for ( size_t z = 1; z < nn1.size(); ++z )
12379 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12381 else if ( nn1.size() == 1 )
12384 for ( size_t z = 1; z < nn2.size(); ++z )
12385 sm->AddElement( ff[z-1] = m->AddFace( nn1[0], nn2[z-1], nn2[z] ));
12387 for ( size_t z = 1; z < nn2.size(); ++z )
12388 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
12393 for ( size_t z = 1; z < nn1.size(); ++z )
12394 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[0], nn1[z] ));
12396 for ( size_t z = 1; z < nn1.size(); ++z )
12397 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
12400 if ( adjSM ) // add faces to a proxy SM of the adjacent SOLID
12402 for ( size_t z = 0; z < ff.size(); ++z )
12404 adjSM->AddElement( ff[ z ]);
12410 for ( int isFirst = 0; isFirst < 2; ++isFirst )
12412 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
12413 _EdgesOnShape* eos = data.GetShapeEdges( edge );
12414 if ( eos && eos->SWOLType() == TopAbs_EDGE )
12416 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
12417 if ( nn.size() < 2 || nn[1]->NbInverseElements( SMDSAbs_Edge ) >= 2 )
12419 helper.SetSubShape( eos->_sWOL );
12420 helper.SetElementsOnShape( true );
12421 for ( size_t z = 1; z < nn.size(); ++z )
12422 helper.AddEdge( nn[z-1], nn[z] );
12426 } // loop on EDGE's
12427 } // loop on _SolidData's