1 // Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // File : StdMeshers_ViscousLayers.cxx
21 // Created : Wed Dec 1 15:15:34 2010
22 // Author : Edward AGAPOV (eap)
24 #include "StdMeshers_ViscousLayers.hxx"
26 #include "ObjectPool.hxx"
27 #include "SMDS_EdgePosition.hxx"
28 #include "SMDS_FaceOfNodes.hxx"
29 #include "SMDS_FacePosition.hxx"
30 #include "SMDS_MeshNode.hxx"
31 #include "SMDS_PolygonalFaceOfNodes.hxx"
32 #include "SMDS_SetIterator.hxx"
33 #include "SMESHDS_Group.hxx"
34 #include "SMESHDS_Hypothesis.hxx"
35 #include "SMESHDS_Mesh.hxx"
36 #include "SMESH_Algo.hxx"
37 #include "SMESH_Block.hxx"
38 #include "SMESH_ComputeError.hxx"
39 #include "SMESH_ControlsDef.hxx"
40 #include "SMESH_Gen.hxx"
41 #include "SMESH_Group.hxx"
42 #include "SMESH_HypoFilter.hxx"
43 #include "SMESH_Mesh.hxx"
44 #include "SMESH_MeshAlgos.hxx"
45 #include "SMESH_MeshEditor.hxx"
46 #include "SMESH_MesherHelper.hxx"
47 #include "SMESH_ProxyMesh.hxx"
48 #include "SMESH_subMesh.hxx"
49 #include "SMESH_subMeshEventListener.hxx"
50 #include "StdMeshers_FaceSide.hxx"
51 #include "StdMeshers_ProjectionUtils.hxx"
52 #include "StdMeshers_Quadrangle_2D.hxx"
53 #include "StdMeshers_ViscousLayers2D.hxx"
55 #include <Adaptor3d_HSurface.hxx>
56 #include <BRepAdaptor_Curve.hxx>
57 #include <BRepAdaptor_Curve2d.hxx>
58 #include <BRepAdaptor_Surface.hxx>
59 #include <BRepLProp_SLProps.hxx>
60 #include <BRepOffsetAPI_MakeOffsetShape.hxx>
61 #include <BRep_Tool.hxx>
62 #include <Bnd_B2d.hxx>
63 #include <Bnd_B3d.hxx>
65 #include <GCPnts_AbscissaPoint.hxx>
66 #include <GCPnts_TangentialDeflection.hxx>
67 #include <Geom2d_Circle.hxx>
68 #include <Geom2d_Line.hxx>
69 #include <Geom2d_TrimmedCurve.hxx>
70 #include <GeomAdaptor_Curve.hxx>
71 #include <GeomLib.hxx>
72 #include <Geom_Circle.hxx>
73 #include <Geom_Curve.hxx>
74 #include <Geom_Line.hxx>
75 #include <Geom_TrimmedCurve.hxx>
76 #include <Precision.hxx>
77 #include <Standard_ErrorHandler.hxx>
78 #include <Standard_Failure.hxx>
79 #include <TColStd_Array1OfReal.hxx>
81 #include <TopExp_Explorer.hxx>
82 #include <TopTools_IndexedMapOfShape.hxx>
83 #include <TopTools_ListOfShape.hxx>
84 #include <TopTools_MapIteratorOfMapOfShape.hxx>
85 #include <TopTools_MapOfShape.hxx>
87 #include <TopoDS_Edge.hxx>
88 #include <TopoDS_Face.hxx>
89 #include <TopoDS_Vertex.hxx>
91 #include <gp_Cone.hxx>
92 #include <gp_Sphere.hxx>
101 #include <unordered_map>
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;
389 typedef map< const SMDS_MeshNode*, _LayerEdge*, TIDCompare > TNode2Edge;
391 //--------------------------------------------------------------------------------
393 * \brief Edge normal to surface, connecting a node on solid surface (_nodes[0])
394 * and a node of the most internal layer (_nodes.back())
398 typedef gp_XYZ (_LayerEdge::*PSmooFun)();
400 vector< const SMDS_MeshNode*> _nodes;
402 gp_XYZ _normal; // to boundary of solid
403 vector<gp_XYZ> _pos; // points computed during inflation
404 double _len; // length achieved with the last inflation step
405 double _maxLen; // maximal possible length
406 double _cosin; // of angle (_normal ^ surface)
407 double _minAngle; // of _simplices
408 double _lenFactor; // to compute _len taking _cosin into account
411 // simplices connected to the source node (_nodes[0]);
412 // used for smoothing and quality check of _LayerEdge's based on the FACE
413 vector<_Simplex> _simplices;
414 vector<_LayerEdge*> _neibors; // all surrounding _LayerEdge's
415 PSmooFun _smooFunction; // smoothing function
416 _Curvature* _curvature;
417 // data for smoothing of _LayerEdge's based on the EDGE
418 _2NearEdges* _2neibors;
420 enum EFlags { TO_SMOOTH = 0x0000001,
421 MOVED = 0x0000002, // set by _neibors[i]->SetNewLength()
422 SMOOTHED = 0x0000004, // set by _LayerEdge::Smooth()
423 DIFFICULT = 0x0000008, // near concave VERTEX
424 ON_CONCAVE_FACE = 0x0000010,
425 BLOCKED = 0x0000020, // not to inflate any more
426 INTERSECTED = 0x0000040, // close intersection with a face found
427 NORMAL_UPDATED = 0x0000080,
428 UPD_NORMAL_CONV = 0x0000100, // to update normal on boundary of concave FACE
429 MARKED = 0x0000200, // local usage
430 MULTI_NORMAL = 0x0000400, // a normal is invisible by some of surrounding faces
431 NEAR_BOUNDARY = 0x0000800, // is near FACE boundary forcing smooth
432 SMOOTHED_C1 = 0x0001000, // is on _eosC1
433 DISTORTED = 0x0002000, // was bad before smoothing
434 RISKY_SWOL = 0x0004000, // SWOL is parallel to a source FACE
435 SHRUNK = 0x0008000, // target node reached a tgt position while shrink()
436 UNUSED_FLAG = 0x0100000 // to add user flags after
438 bool Is ( int flag ) const { return _flags & flag; }
439 void Set ( int flag ) { _flags |= flag; }
440 void Unset( int flag ) { _flags &= ~flag; }
441 std::string DumpFlags() const; // debug
443 void SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
444 bool SetNewLength2d( Handle(Geom_Surface)& surface,
445 const TopoDS_Face& F,
447 SMESH_MesherHelper& helper );
448 bool UpdatePositionOnSWOL( SMDS_MeshNode* n,
451 SMESH_MesherHelper& helper );
452 void SetDataByNeighbors( const SMDS_MeshNode* n1,
453 const SMDS_MeshNode* n2,
454 const _EdgesOnShape& eos,
455 SMESH_MesherHelper& helper);
456 void Block( _SolidData& data );
457 void InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength=false );
458 void ChooseSmooFunction(const set< TGeomID >& concaveVertices,
459 const TNode2Edge& n2eMap);
460 void SmoothPos( const vector< double >& segLen, const double tol );
461 int GetSmoothedPos( const double tol );
462 int Smooth(const int step, const bool isConcaveFace, bool findBest);
463 int Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth );
464 int CheckNeiborsOnBoundary(vector< _LayerEdge* >* badNeibors = 0, bool * needSmooth = 0 );
465 void SmoothWoCheck();
466 bool SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
467 const TopoDS_Face& F,
468 SMESH_MesherHelper& helper);
469 void MoveNearConcaVer( const _EdgesOnShape* eov,
470 const _EdgesOnShape* eos,
472 vector< _LayerEdge* > & badSmooEdges);
473 bool FindIntersection( SMESH_ElementSearcher& searcher,
475 const double& epsilon,
477 const SMDS_MeshElement** face = 0);
478 bool SegTriaInter( const gp_Ax1& lastSegment,
483 const double& epsilon) const;
484 bool SegTriaInter( const gp_Ax1& lastSegment,
485 const SMDS_MeshNode* n0,
486 const SMDS_MeshNode* n1,
487 const SMDS_MeshNode* n2,
489 const double& epsilon) const
490 { return SegTriaInter( lastSegment,
491 SMESH_TNodeXYZ( n0 ), SMESH_TNodeXYZ( n1 ), SMESH_TNodeXYZ( n2 ),
494 const gp_XYZ& PrevPos() const { return _pos[ _pos.size() - 2 ]; }
495 gp_XYZ PrevCheckPos( _EdgesOnShape* eos=0 ) const;
496 gp_Ax1 LastSegment(double& segLen, _EdgesOnShape& eos) const;
497 gp_XY LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which=-1 ) const;
498 bool IsOnEdge() const { return _2neibors; }
499 bool IsOnFace() const { return ( _nodes[0]->GetPosition()->GetDim() == 2 ); }
500 int BaseShapeDim() const { return _nodes[0]->GetPosition()->GetDim(); }
501 gp_XYZ Copy( _LayerEdge& other, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
502 double SetCosin( double cosin );
503 void SetNormal( const gp_XYZ& n ) { _normal = n; }
504 void SetMaxLen( double l ) { _maxLen = l; }
505 int NbSteps() const { return _pos.size() - 1; } // nb inlation steps
506 bool IsNeiborOnEdge( const _LayerEdge* edge ) const;
507 void SetSmooLen( double len ) { // set _len at which smoothing is needed
508 _cosin = len; // as for _LayerEdge's on FACE _cosin is not used
510 double GetSmooLen() { return _cosin; } // for _LayerEdge's on FACE _cosin is not used
512 gp_XYZ smoothLaplacian();
513 gp_XYZ smoothAngular();
514 gp_XYZ smoothLengthWeighted();
515 gp_XYZ smoothCentroidal();
516 gp_XYZ smoothNefPolygon();
518 enum { FUN_LAPLACIAN, FUN_LENWEIGHTED, FUN_CENTROIDAL, FUN_NEFPOLY, FUN_ANGULAR, FUN_NB };
519 static const int theNbSmooFuns = FUN_NB;
520 static PSmooFun _funs[theNbSmooFuns];
521 static const char* _funNames[theNbSmooFuns+1];
522 int smooFunID( PSmooFun fun=0) const;
524 _LayerEdge::PSmooFun _LayerEdge::_funs[theNbSmooFuns] = { &_LayerEdge::smoothLaplacian,
525 &_LayerEdge::smoothLengthWeighted,
526 &_LayerEdge::smoothCentroidal,
527 &_LayerEdge::smoothNefPolygon,
528 &_LayerEdge::smoothAngular };
529 const char* _LayerEdge::_funNames[theNbSmooFuns+1] = { "Laplacian",
537 bool operator () (const _LayerEdge* e1, const _LayerEdge* e2) const
539 const bool cmpNodes = ( e1 && e2 && e1->_nodes.size() && e2->_nodes.size() );
540 return cmpNodes ? ( e1->_nodes[0]->GetID() < e2->_nodes[0]->GetID()) : ( e1 < e2 );
543 //--------------------------------------------------------------------------------
545 * A 2D half plane used by _LayerEdge::smoothNefPolygon()
549 gp_XY _pos, _dir, _inNorm;
550 bool IsOut( const gp_XY p, const double tol ) const
552 return _inNorm * ( p - _pos ) < -tol;
554 bool FindIntersection( const _halfPlane& hp, gp_XY & intPnt )
556 //const double eps = 1e-10;
557 double D = _dir.Crossed( hp._dir );
558 if ( fabs(D) < std::numeric_limits<double>::min())
560 gp_XY vec21 = _pos - hp._pos;
561 double u = hp._dir.Crossed( vec21 ) / D;
562 intPnt = _pos + _dir * u;
566 //--------------------------------------------------------------------------------
568 * Structure used to smooth a _LayerEdge based on an EDGE.
572 double _wgt [2]; // weights of _nodes
573 _LayerEdge* _edges[2];
575 // normal to plane passing through _LayerEdge._normal and tangent of EDGE
578 _2NearEdges() { _edges[0]=_edges[1]=0; _plnNorm = 0; }
579 ~_2NearEdges(){ delete _plnNorm; }
580 const SMDS_MeshNode* tgtNode(bool is2nd) {
581 return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0;
583 const SMDS_MeshNode* srcNode(bool is2nd) {
584 return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0;
587 std::swap( _wgt [0], _wgt [1] );
588 std::swap( _edges[0], _edges[1] );
590 void set( _LayerEdge* e1, _LayerEdge* e2, double w1, double w2 ) {
591 _edges[0] = e1; _edges[1] = e2; _wgt[0] = w1; _wgt[1] = w2;
593 bool include( const _LayerEdge* e ) {
594 return ( _edges[0] == e || _edges[1] == e );
599 //--------------------------------------------------------------------------------
601 * \brief Layers parameters got by averaging several hypotheses
605 AverageHyp( const StdMeshers_ViscousLayers* hyp = 0 )
606 :_nbLayers(0), _nbHyps(0), _method(0), _thickness(0), _stretchFactor(0)
610 void Add( const StdMeshers_ViscousLayers* hyp )
615 _nbLayers = hyp->GetNumberLayers();
616 //_thickness += hyp->GetTotalThickness();
617 _thickness = Max( _thickness, hyp->GetTotalThickness() );
618 _stretchFactor += hyp->GetStretchFactor();
619 _method = hyp->GetMethod();
620 if ( _groupName.empty() )
621 _groupName = hyp->GetGroupName();
624 double GetTotalThickness() const { return _thickness; /*_nbHyps ? _thickness / _nbHyps : 0;*/ }
625 double GetStretchFactor() const { return _nbHyps ? _stretchFactor / _nbHyps : 0; }
626 int GetNumberLayers() const { return _nbLayers; }
627 int GetMethod() const { return _method; }
628 bool ToCreateGroup() const { return !_groupName.empty(); }
629 const std::string& GetGroupName() const { return _groupName; }
631 double Get1stLayerThickness( double realThickness = 0.) const
633 const double T = ( realThickness > 0 ) ? realThickness : GetTotalThickness();
634 const double f = GetStretchFactor();
635 const int N = GetNumberLayers();
636 const double fPowN = pow( f, N );
638 if ( fPowN - 1 <= numeric_limits<double>::min() )
641 h0 = T * ( f - 1 )/( fPowN - 1 );
645 bool UseSurfaceNormal() const
646 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
647 bool ToSmooth() const
648 { return _method == StdMeshers_ViscousLayers::SURF_OFFSET_SMOOTH; }
649 bool IsOffsetMethod() const
650 { return _method == StdMeshers_ViscousLayers::FACE_OFFSET; }
652 bool operator==( const AverageHyp& other ) const
654 return ( _nbLayers == other._nbLayers &&
655 _method == other._method &&
656 Equals( GetTotalThickness(), other.GetTotalThickness() ) &&
657 Equals( GetStretchFactor(), other.GetStretchFactor() ));
659 static bool Equals( double v1, double v2 ) { return Abs( v1 - v2 ) < 0.01 * ( v1 + v2 ); }
662 int _nbLayers, _nbHyps, _method;
663 double _thickness, _stretchFactor;
664 std::string _groupName;
667 //--------------------------------------------------------------------------------
669 * \brief _LayerEdge's on a shape and other shape data
673 vector< _LayerEdge* > _edges;
677 SMESH_subMesh * _subMesh;
678 // face or edge w/o layer along or near which _edges are inflated
680 bool _isRegularSWOL; // w/o singularities
681 // averaged StdMeshers_ViscousLayers parameters
684 _Smoother1D* _edgeSmoother;
685 vector< _EdgesOnShape* > _eosConcaVer; // edges at concave VERTEXes of a FACE
686 vector< _EdgesOnShape* > _eosC1; // to smooth together several C1 continues shapes
688 typedef std::unordered_map< const SMDS_MeshElement*, gp_XYZ > TFace2NormMap;
689 TFace2NormMap _faceNormals; // if _shape is FACE
690 vector< _EdgesOnShape* > _faceEOS; // to get _faceNormals of adjacent FACEs
692 Handle(ShapeAnalysis_Surface) _offsetSurf;
693 _LayerEdge* _edgeForOffset;
695 _Mapper2D* _mapper2D;
697 _SolidData* _data; // parent SOLID
699 _LayerEdge* operator[](size_t i) const { return (_LayerEdge*) _edges[i]; }
700 size_t size() const { return _edges.size(); }
701 TopAbs_ShapeEnum ShapeType() const
702 { return _shape.IsNull() ? TopAbs_SHAPE : _shape.ShapeType(); }
703 TopAbs_ShapeEnum SWOLType() const
704 { return _sWOL.IsNull() ? TopAbs_SHAPE : _sWOL.ShapeType(); }
705 bool HasC1( const _EdgesOnShape* other ) const
706 { return std::find( _eosC1.begin(), _eosC1.end(), other ) != _eosC1.end(); }
707 bool GetNormal( const SMDS_MeshElement* face, gp_Vec& norm );
708 _SolidData& GetData() const { return *_data; }
709 char ShapeTypeLetter() const
710 { switch ( ShapeType() ) { case TopAbs_FACE: return 'F'; case TopAbs_EDGE: return 'E';
711 case TopAbs_VERTEX: return 'V'; default: return 'S'; }}
713 _EdgesOnShape(): _shapeID(-1), _subMesh(0), _toSmooth(false), _edgeSmoother(0), _mapper2D(0) {}
717 //--------------------------------------------------------------------------------
719 * \brief Convex FACE whose radius of curvature is less than the thickness of
720 * layers. It is used to detect distortion of prisms based on a convex
721 * FACE and to update normals to enable further increasing the thickness
727 // edges whose _simplices are used to detect prism distortion
728 vector< _LayerEdge* > _simplexTestEdges;
730 // map a sub-shape to _SolidData::_edgesOnShape
731 map< TGeomID, _EdgesOnShape* > _subIdToEOS;
735 bool _normalsFixedOnBorders; // used in putOnOffsetSurface()
737 double GetMaxCurvature( _SolidData& data,
739 BRepLProp_SLProps& surfProp,
740 SMESH_MesherHelper& helper);
742 bool GetCenterOfCurvature( _LayerEdge* ledge,
743 BRepLProp_SLProps& surfProp,
744 SMESH_MesherHelper& helper,
745 gp_Pnt & center ) const;
746 bool CheckPrisms() const;
749 //--------------------------------------------------------------------------------
751 * \brief Structure holding _LayerEdge's based on EDGEs that will collide
752 * at inflation up to the full thickness. A detected collision
753 * is fixed in updateNormals()
755 struct _CollisionEdges
758 vector< _LayerEdge* > _intEdges; // each pair forms an intersected quadrangle
759 const SMDS_MeshNode* nSrc(int i) const { return _intEdges[i]->_nodes[0]; }
760 const SMDS_MeshNode* nTgt(int i) const { return _intEdges[i]->_nodes.back(); }
763 //--------------------------------------------------------------------------------
765 * \brief Data of a SOLID
769 typedef const StdMeshers_ViscousLayers* THyp;
771 TopTools_MapOfShape _before; // SOLIDs to be computed before _solid
772 TGeomID _index; // SOLID id
773 _MeshOfSolid* _proxyMesh;
776 list< TopoDS_Shape > _hypShapes;
777 map< TGeomID, THyp > _face2hyp; // filled if _hyps.size() > 1
778 set< TGeomID > _reversedFaceIds;
779 set< TGeomID > _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDs
781 double _stepSize, _stepSizeCoeff, _geomSize;
782 const SMDS_MeshNode* _stepSizeNodes[2];
784 TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
786 // map to find _n2eMap of another _SolidData by a shrink shape shared by two _SolidData's
787 map< TGeomID, TNode2Edge* > _s2neMap;
788 // _LayerEdge's with underlying shapes
789 vector< _EdgesOnShape > _edgesOnShape;
791 // key: an ID of shape (EDGE or VERTEX) shared by a FACE with
792 // layers and a FACE w/o layers
793 // value: the shape (FACE or EDGE) to shrink mesh on.
794 // _LayerEdge's basing on nodes on key shape are inflated along the value shape
795 map< TGeomID, TopoDS_Shape > _shrinkShape2Shape;
797 // Convex FACEs whose radius of curvature is less than the thickness of layers
798 map< TGeomID, _ConvexFace > _convexFaces;
800 // shapes (EDGEs and VERTEXes) shrink from which is forbidden due to collisions with
801 // the adjacent SOLID
802 set< TGeomID > _noShrinkShapes;
804 int _nbShapesToSmooth;
806 vector< _CollisionEdges > _collisionEdges;
807 set< TGeomID > _concaveFaces;
809 double _maxThickness; // of all _hyps
810 double _minThickness; // of all _hyps
812 double _epsilon; // precision for SegTriaInter()
814 SMESH_MesherHelper* _helper;
816 _SolidData(const TopoDS_Shape& s=TopoDS_Shape(),
818 :_solid(s), _proxyMesh(m), _done(false),_helper(0) {}
819 ~_SolidData() { delete _helper; _helper = 0; }
821 void SortOnEdge( const TopoDS_Edge& E, vector< _LayerEdge* >& edges);
822 void Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges );
824 _ConvexFace* GetConvexFace( const TGeomID faceID ) {
825 map< TGeomID, _ConvexFace >::iterator id2face = _convexFaces.find( faceID );
826 return id2face == _convexFaces.end() ? 0 : & id2face->second;
828 _EdgesOnShape* GetShapeEdges(const TGeomID shapeID );
829 _EdgesOnShape* GetShapeEdges(const TopoDS_Shape& shape );
830 _EdgesOnShape* GetShapeEdges(const _LayerEdge* edge )
831 { return GetShapeEdges( edge->_nodes[0]->getshapeId() ); }
833 SMESH_MesherHelper& GetHelper() const { return *_helper; }
835 void UnmarkEdges( int flag = _LayerEdge::MARKED ) {
836 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
837 for ( size_t j = 0; j < _edgesOnShape[i]._edges.size(); ++j )
838 _edgesOnShape[i]._edges[j]->Unset( flag );
840 void AddShapesToSmooth( const set< _EdgesOnShape* >& shape,
841 const set< _EdgesOnShape* >* edgesNoAnaSmooth=0 );
843 void PrepareEdgesToSmoothOnFace( _EdgesOnShape* eof, bool substituteSrcNodes );
845 //--------------------------------------------------------------------------------
847 * \brief Offset plane used in getNormalByOffset()
853 int _faceIndexNext[2];
854 gp_Lin _lines[2]; // line of intersection with neighbor _OffsetPlane's
857 _isLineOK[0] = _isLineOK[1] = false; _faceIndexNext[0] = _faceIndexNext[1] = -1;
859 void ComputeIntersectionLine( _OffsetPlane& pln,
860 const TopoDS_Edge& E,
861 const TopoDS_Vertex& V );
862 gp_XYZ GetCommonPoint(bool& isFound, const TopoDS_Vertex& V) const;
863 int NbLines() const { return _isLineOK[0] + _isLineOK[1]; }
865 //--------------------------------------------------------------------------------
867 * \brief Container of centers of curvature at nodes on an EDGE bounding _ConvexFace
869 struct _CentralCurveOnEdge
872 vector< gp_Pnt > _curvaCenters;
873 vector< _LayerEdge* > _ledges;
874 vector< gp_XYZ > _normals; // new normal for each of _ledges
875 vector< double > _segLength2;
878 TopoDS_Face _adjFace;
879 bool _adjFaceToSmooth;
881 void Append( const gp_Pnt& center, _LayerEdge* ledge )
883 if ( ledge->Is( _LayerEdge::MULTI_NORMAL ))
885 if ( _curvaCenters.size() > 0 )
886 _segLength2.push_back( center.SquareDistance( _curvaCenters.back() ));
887 _curvaCenters.push_back( center );
888 _ledges.push_back( ledge );
889 _normals.push_back( ledge->_normal );
891 bool FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal );
892 void SetShapes( const TopoDS_Edge& edge,
893 const _ConvexFace& convFace,
895 SMESH_MesherHelper& helper);
897 //--------------------------------------------------------------------------------
899 * \brief Data of node on a shrinked FACE
903 const SMDS_MeshNode* _node;
904 vector<_Simplex> _simplices; // for quality check
906 enum SmoothType { LAPLACIAN, CENTROIDAL, ANGULAR, TFI };
908 bool Smooth(int& badNb,
909 Handle(Geom_Surface)& surface,
910 SMESH_MesherHelper& helper,
911 const double refSign,
915 gp_XY computeAngularPos(vector<gp_XY>& uv,
916 const gp_XY& uvToFix,
917 const double refSign );
921 //--------------------------------------------------------------------------------
923 * \brief Builder of viscous layers
925 class _ViscousBuilder
930 SMESH_ComputeErrorPtr Compute(SMESH_Mesh& mesh,
931 const TopoDS_Shape& shape);
932 // check validity of hypotheses
933 SMESH_ComputeErrorPtr CheckHypotheses( SMESH_Mesh& mesh,
934 const TopoDS_Shape& shape );
936 // restore event listeners used to clear an inferior dim sub-mesh modified by viscous layers
937 void RestoreListeners();
939 // computes SMESH_ProxyMesh::SubMesh::_n2n;
940 bool MakeN2NMap( _MeshOfSolid* pm );
944 bool findSolidsWithLayers(const bool checkFaceMesh=true);
945 bool setBefore( _SolidData& solidBefore, _SolidData& solidAfter );
946 bool findFacesWithLayers(const bool onlyWith=false);
947 void findPeriodicFaces();
948 void getIgnoreFaces(const TopoDS_Shape& solid,
949 const StdMeshers_ViscousLayers* hyp,
950 const TopoDS_Shape& hypShape,
951 set<TGeomID>& ignoreFaces);
952 int makeEdgesOnShape();
953 bool makeLayer(_SolidData& data);
954 void setShapeData( _EdgesOnShape& eos, SMESH_subMesh* sm, _SolidData& data );
955 bool setEdgeData( _LayerEdge& edge, _EdgesOnShape& eos,
956 SMESH_MesherHelper& helper, _SolidData& data);
957 gp_XYZ getFaceNormal(const SMDS_MeshNode* n,
958 const TopoDS_Face& face,
959 SMESH_MesherHelper& helper,
961 bool shiftInside=false);
962 bool getFaceNormalAtSingularity(const gp_XY& uv,
963 const TopoDS_Face& face,
964 SMESH_MesherHelper& helper,
966 gp_XYZ getWeigthedNormal( const _LayerEdge* edge );
967 gp_XYZ getNormalByOffset( _LayerEdge* edge,
968 std::pair< TopoDS_Face, gp_XYZ > fId2Normal[],
970 bool lastNoOffset = false);
971 bool findNeiborsOnEdge(const _LayerEdge* edge,
972 const SMDS_MeshNode*& n1,
973 const SMDS_MeshNode*& n2,
976 void findSimplexTestEdges( _SolidData& data,
977 vector< vector<_LayerEdge*> >& edgesByGeom);
978 void computeGeomSize( _SolidData& data );
979 bool findShapesToSmooth( _SolidData& data);
980 void limitStepSizeByCurvature( _SolidData& data );
981 void limitStepSize( _SolidData& data,
982 const SMDS_MeshElement* face,
983 const _LayerEdge* maxCosinEdge );
984 void limitStepSize( _SolidData& data, const double minSize);
985 bool inflate(_SolidData& data);
986 bool smoothAndCheck(_SolidData& data, const int nbSteps, double & distToIntersection);
987 int invalidateBadSmooth( _SolidData& data,
988 SMESH_MesherHelper& helper,
989 vector< _LayerEdge* >& badSmooEdges,
990 vector< _EdgesOnShape* >& eosC1,
992 void makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& );
993 void putOnOffsetSurface( _EdgesOnShape& eos, int infStep,
994 vector< _EdgesOnShape* >& eosC1,
995 int smooStep=0, int moveAll=false );
996 void findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper );
997 void findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
999 SMESH_MesherHelper& helper );
1000 void limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& helper );
1001 void limitMaxLenByCurvature( _LayerEdge* e1, _LayerEdge* e2,
1002 _EdgesOnShape& eos1, _EdgesOnShape& eos2,
1003 const bool isSmoothable );
1004 bool updateNormals( _SolidData& data, SMESH_MesherHelper& helper, int stepNb, double stepSize );
1005 bool updateNormalsOfConvexFaces( _SolidData& data,
1006 SMESH_MesherHelper& helper,
1008 void updateNormalsOfC1Vertices( _SolidData& data );
1009 bool updateNormalsOfSmoothed( _SolidData& data,
1010 SMESH_MesherHelper& helper,
1012 const double stepSize );
1013 bool isNewNormalOk( _SolidData& data,
1015 const gp_XYZ& newNormal);
1016 bool refine(_SolidData& data);
1017 bool shrink(_SolidData& data);
1018 bool prepareEdgeToShrink( _LayerEdge& edge, _EdgesOnShape& eos,
1019 SMESH_MesherHelper& helper,
1020 const SMESHDS_SubMesh* faceSubMesh );
1021 void restoreNoShrink( _LayerEdge& edge ) const;
1022 void fixBadFaces(const TopoDS_Face& F,
1023 SMESH_MesherHelper& helper,
1026 set<const SMDS_MeshNode*> * involvedNodes=NULL);
1027 bool addBoundaryElements(_SolidData& data);
1029 bool error( const string& text, int solidID=-1 );
1030 SMESHDS_Mesh* getMeshDS() const { return _mesh->GetMeshDS(); }
1033 void makeGroupOfLE();
1036 SMESH_ComputeErrorPtr _error;
1038 vector< _SolidData > _sdVec;
1039 TopTools_IndexedMapOfShape _solids; // to find _SolidData by a solid
1040 TopTools_MapOfShape _shrunkFaces;
1041 std::unique_ptr<Periodicity> _periodicity;
1046 //--------------------------------------------------------------------------------
1048 * \brief Shrinker of nodes on the EDGE
1052 TopoDS_Edge _geomEdge;
1053 vector<double> _initU;
1054 vector<double> _normPar;
1055 vector<const SMDS_MeshNode*> _nodes;
1056 const _LayerEdge* _edges[2];
1059 void AddEdge( const _LayerEdge* e, _EdgesOnShape& eos, SMESH_MesherHelper& helper );
1060 void Compute(bool set3D, SMESH_MesherHelper& helper);
1061 void RestoreParams();
1062 void SwapSrcTgtNodes(SMESHDS_Mesh* mesh);
1063 const TopoDS_Edge& GeomEdge() const { return _geomEdge; }
1064 const SMDS_MeshNode* TgtNode( bool is2nd ) const
1065 { return _edges[is2nd] ? _edges[is2nd]->_nodes.back() : 0; }
1066 const SMDS_MeshNode* SrcNode( bool is2nd ) const
1067 { return _edges[is2nd] ? _edges[is2nd]->_nodes[0] : 0; }
1069 //--------------------------------------------------------------------------------
1071 * \brief Smoother of _LayerEdge's on EDGE.
1075 struct OffPnt // point of the offsetted EDGE
1077 gp_XYZ _xyz; // coord of a point inflated from EDGE w/o smooth
1078 double _len; // length reached at previous inflation step
1079 double _param; // on EDGE
1080 _2NearEdges _2edges; // 2 neighbor _LayerEdge's
1081 gp_XYZ _edgeDir;// EDGE tangent at _param
1082 double Distance( const OffPnt& p ) const { return ( _xyz - p._xyz ).Modulus(); }
1084 vector< OffPnt > _offPoints;
1085 vector< double > _leParams; // normalized param of _eos._edges on EDGE
1086 Handle(Geom_Curve) _anaCurve; // for analytic smooth
1087 _LayerEdge _leOnV[2]; // _LayerEdge's holding normal to the EDGE at VERTEXes
1088 gp_XYZ _edgeDir[2]; // tangent at VERTEXes
1089 size_t _iSeg[2]; // index of segment where extreme tgt node is projected
1090 _EdgesOnShape& _eos;
1091 double _curveLen; // length of the EDGE
1092 std::pair<int,int> _eToSmooth[2]; // <from,to> indices of _LayerEdge's in _eos
1094 static Handle(Geom_Curve) CurveForSmooth( const TopoDS_Edge& E,
1096 SMESH_MesherHelper& helper);
1098 _Smoother1D( Handle(Geom_Curve) curveForSmooth,
1099 _EdgesOnShape& eos )
1100 : _anaCurve( curveForSmooth ), _eos( eos )
1103 bool Perform(_SolidData& data,
1104 Handle(ShapeAnalysis_Surface)& surface,
1105 const TopoDS_Face& F,
1106 SMESH_MesherHelper& helper );
1108 void prepare(_SolidData& data );
1110 void findEdgesToSmooth();
1112 bool isToSmooth( int iE );
1114 bool smoothAnalyticEdge( _SolidData& data,
1115 Handle(ShapeAnalysis_Surface)& surface,
1116 const TopoDS_Face& F,
1117 SMESH_MesherHelper& helper);
1118 bool smoothComplexEdge( _SolidData& data,
1119 Handle(ShapeAnalysis_Surface)& surface,
1120 const TopoDS_Face& F,
1121 SMESH_MesherHelper& helper);
1122 gp_XYZ getNormalNormal( const gp_XYZ & normal,
1123 const gp_XYZ& edgeDir);
1124 _LayerEdge* getLEdgeOnV( bool is2nd )
1126 return _eos._edges[ is2nd ? _eos._edges.size()-1 : 0 ]->_2neibors->_edges[ is2nd ];
1128 bool isAnalytic() const { return !_anaCurve.IsNull(); }
1130 void offPointsToPython() const; // debug
1133 //--------------------------------------------------------------------------------
1135 * \brief Compute positions of nodes of 2D structured mesh using TFI
1139 FaceQuadStruct _quadPoints;
1141 UVPtStruct& uvPnt( size_t i, size_t j ) { return _quadPoints.UVPt( i, j ); }
1144 _Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap );
1145 bool ComputeNodePositions();
1148 //--------------------------------------------------------------------------------
1150 * \brief Class of temporary mesh face.
1151 * We can't use SMDS_FaceOfNodes since it's impossible to set it's ID which is
1152 * needed because SMESH_ElementSearcher internally uses set of elements sorted by ID
1154 struct _TmpMeshFace : public SMDS_PolygonalFaceOfNodes
1156 const SMDS_MeshElement* _srcFace;
1158 _TmpMeshFace( const vector<const SMDS_MeshNode*>& nodes,
1161 const SMDS_MeshElement* srcFace=0 ):
1162 SMDS_PolygonalFaceOfNodes(nodes), _srcFace( srcFace ) { setID( ID ); setShapeID( faceID ); }
1163 virtual SMDSAbs_EntityType GetEntityType() const
1164 { return _srcFace ? _srcFace->GetEntityType() : SMDSEntity_Quadrangle; }
1165 virtual SMDSAbs_GeometryType GetGeomType() const
1166 { return _srcFace ? _srcFace->GetGeomType() : SMDSGeom_QUADRANGLE; }
1168 //--------------------------------------------------------------------------------
1170 * \brief Class of temporary mesh quadrangle face storing _LayerEdge it's based on
1172 struct _TmpMeshFaceOnEdge : public _TmpMeshFace
1174 _LayerEdge *_le1, *_le2;
1175 _TmpMeshFaceOnEdge( _LayerEdge* le1, _LayerEdge* le2, int ID ):
1176 _TmpMeshFace( vector<const SMDS_MeshNode*>(4), ID ), _le1(le1), _le2(le2)
1178 myNodes[0]=_le1->_nodes[0];
1179 myNodes[1]=_le1->_nodes.back();
1180 myNodes[2]=_le2->_nodes.back();
1181 myNodes[3]=_le2->_nodes[0];
1183 const SMDS_MeshNode* n( size_t i ) const
1185 return myNodes[ i ];
1187 gp_XYZ GetDir() const // return average direction of _LayerEdge's, normal to EDGE
1189 SMESH_TNodeXYZ p0s( myNodes[0] );
1190 SMESH_TNodeXYZ p0t( myNodes[1] );
1191 SMESH_TNodeXYZ p1t( myNodes[2] );
1192 SMESH_TNodeXYZ p1s( myNodes[3] );
1193 gp_XYZ v0 = p0t - p0s;
1194 gp_XYZ v1 = p1t - p1s;
1195 gp_XYZ v01 = p1s - p0s;
1196 gp_XYZ n = ( v0 ^ v01 ) + ( v1 ^ v01 );
1201 gp_XYZ GetDir(_LayerEdge* le1, _LayerEdge* le2) // return average direction of _LayerEdge's
1203 myNodes[0]=le1->_nodes[0];
1204 myNodes[1]=le1->_nodes.back();
1205 myNodes[2]=le2->_nodes.back();
1206 myNodes[3]=le2->_nodes[0];
1210 //--------------------------------------------------------------------------------
1212 * \brief Retriever of node coordinates either directly or from a surface by node UV.
1213 * \warning Location of a surface is ignored
1215 struct _NodeCoordHelper
1217 SMESH_MesherHelper& _helper;
1218 const TopoDS_Face& _face;
1219 Handle(Geom_Surface) _surface;
1220 gp_XYZ (_NodeCoordHelper::* _fun)(const SMDS_MeshNode* n) const;
1222 _NodeCoordHelper(const TopoDS_Face& F, SMESH_MesherHelper& helper, bool is2D)
1223 : _helper( helper ), _face( F )
1227 TopLoc_Location loc;
1228 _surface = BRep_Tool::Surface( _face, loc );
1230 if ( _surface.IsNull() )
1231 _fun = & _NodeCoordHelper::direct;
1233 _fun = & _NodeCoordHelper::byUV;
1235 gp_XYZ operator()(const SMDS_MeshNode* n) const { return (this->*_fun)( n ); }
1238 gp_XYZ direct(const SMDS_MeshNode* n) const
1240 return SMESH_TNodeXYZ( n );
1242 gp_XYZ byUV (const SMDS_MeshNode* n) const
1244 gp_XY uv = _helper.GetNodeUV( _face, n );
1245 return _surface->Value( uv.X(), uv.Y() ).XYZ();
1249 //================================================================================
1251 * \brief Check angle between vectors
1253 //================================================================================
1255 inline bool isLessAngle( const gp_Vec& v1, const gp_Vec& v2, const double cos )
1257 double dot = v1 * v2; // cos * |v1| * |v2|
1258 double l1 = v1.SquareMagnitude();
1259 double l2 = v2.SquareMagnitude();
1260 return (( dot * cos >= 0 ) &&
1261 ( dot * dot ) / l1 / l2 >= ( cos * cos ));
1266 ObjectPool< _LayerEdge > _edgePool;
1267 ObjectPool< _Curvature > _curvaturePool;
1268 ObjectPool< _2NearEdges > _nearEdgesPool;
1270 static _Factory* & me()
1272 static _Factory* theFactory = 0;
1277 _Factory() { me() = this; }
1278 ~_Factory() { me() = 0; }
1280 static _LayerEdge* NewLayerEdge() { return me()->_edgePool.getNew(); }
1281 static _Curvature * NewCurvature() { return me()->_curvaturePool.getNew(); }
1282 static _2NearEdges* NewNearEdges() { return me()->_nearEdgesPool.getNew(); }
1285 } // namespace VISCOUS_3D
1289 //================================================================================
1290 // StdMeshers_ViscousLayers hypothesis
1292 StdMeshers_ViscousLayers::StdMeshers_ViscousLayers(int hypId, SMESH_Gen* gen)
1293 :SMESH_Hypothesis(hypId, gen),
1294 _isToIgnoreShapes(1), _nbLayers(1), _thickness(1), _stretchFactor(1),
1295 _method( SURF_OFFSET_SMOOTH ),
1298 _name = StdMeshers_ViscousLayers::GetHypType();
1299 _param_algo_dim = -3; // auxiliary hyp used by 3D algos
1300 } // --------------------------------------------------------------------------------
1301 void StdMeshers_ViscousLayers::SetBndShapes(const std::vector<int>& faceIds, bool toIgnore)
1303 if ( faceIds != _shapeIds )
1304 _shapeIds = faceIds, NotifySubMeshesHypothesisModification();
1305 if ( _isToIgnoreShapes != toIgnore )
1306 _isToIgnoreShapes = toIgnore, NotifySubMeshesHypothesisModification();
1307 } // --------------------------------------------------------------------------------
1308 void StdMeshers_ViscousLayers::SetTotalThickness(double thickness)
1310 if ( thickness != _thickness )
1311 _thickness = thickness, NotifySubMeshesHypothesisModification();
1312 } // --------------------------------------------------------------------------------
1313 void StdMeshers_ViscousLayers::SetNumberLayers(int nb)
1315 if ( _nbLayers != nb )
1316 _nbLayers = nb, NotifySubMeshesHypothesisModification();
1317 } // --------------------------------------------------------------------------------
1318 void StdMeshers_ViscousLayers::SetStretchFactor(double factor)
1320 if ( _stretchFactor != factor )
1321 _stretchFactor = factor, NotifySubMeshesHypothesisModification();
1322 } // --------------------------------------------------------------------------------
1323 void StdMeshers_ViscousLayers::SetMethod( ExtrusionMethod method )
1325 if ( _method != method )
1326 _method = method, NotifySubMeshesHypothesisModification();
1327 } // --------------------------------------------------------------------------------
1328 void StdMeshers_ViscousLayers::SetGroupName(const std::string& name)
1330 if ( _groupName != name )
1333 if ( !_groupName.empty() )
1334 NotifySubMeshesHypothesisModification();
1336 } // --------------------------------------------------------------------------------
1337 SMESH_ProxyMesh::Ptr
1338 StdMeshers_ViscousLayers::Compute(SMESH_Mesh& theMesh,
1339 const TopoDS_Shape& theShape,
1340 const bool toMakeN2NMap) const
1342 using namespace VISCOUS_3D;
1343 _ViscousBuilder builder;
1344 SMESH_ComputeErrorPtr err = builder.Compute( theMesh, theShape );
1345 if ( err && !err->IsOK() )
1346 return SMESH_ProxyMesh::Ptr();
1348 vector<SMESH_ProxyMesh::Ptr> components;
1349 TopExp_Explorer exp( theShape, TopAbs_SOLID );
1350 for ( ; exp.More(); exp.Next() )
1352 if ( _MeshOfSolid* pm =
1353 _ViscousListener::GetSolidMesh( &theMesh, exp.Current(), /*toCreate=*/false))
1355 if ( toMakeN2NMap && !pm->_n2nMapComputed )
1356 if ( !builder.MakeN2NMap( pm ))
1357 return SMESH_ProxyMesh::Ptr();
1358 components.push_back( SMESH_ProxyMesh::Ptr( pm ));
1359 pm->myIsDeletable = false; // it will de deleted by boost::shared_ptr
1361 if ( pm->_warning && !pm->_warning->IsOK() )
1363 SMESH_subMesh* sm = theMesh.GetSubMesh( exp.Current() );
1364 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1365 if ( !smError || smError->IsOK() )
1366 smError = pm->_warning;
1369 _ViscousListener::RemoveSolidMesh ( &theMesh, exp.Current() );
1371 switch ( components.size() )
1375 case 1: return components[0];
1377 default: return SMESH_ProxyMesh::Ptr( new SMESH_ProxyMesh( components ));
1379 return SMESH_ProxyMesh::Ptr();
1380 } // --------------------------------------------------------------------------------
1381 std::ostream & StdMeshers_ViscousLayers::SaveTo(std::ostream & save)
1383 save << " " << _nbLayers
1384 << " " << _thickness
1385 << " " << _stretchFactor
1386 << " " << _shapeIds.size();
1387 for ( size_t i = 0; i < _shapeIds.size(); ++i )
1388 save << " " << _shapeIds[i];
1389 save << " " << !_isToIgnoreShapes; // negate to keep the behavior in old studies.
1390 save << " " << _method;
1391 save << " " << _groupName.size();
1392 if ( !_groupName.empty() )
1393 save << " " << _groupName;
1395 } // --------------------------------------------------------------------------------
1396 std::istream & StdMeshers_ViscousLayers::LoadFrom(std::istream & load)
1398 int nbFaces, faceID, shapeToTreat, method;
1399 load >> _nbLayers >> _thickness >> _stretchFactor >> nbFaces;
1400 while ( (int) _shapeIds.size() < nbFaces && load >> faceID )
1401 _shapeIds.push_back( faceID );
1402 if ( load >> shapeToTreat ) {
1403 _isToIgnoreShapes = !shapeToTreat;
1404 if ( load >> method )
1405 _method = (ExtrusionMethod) method;
1407 if ( load >> nameSize && nameSize > 0 )
1409 _groupName.resize( nameSize );
1410 load.get( _groupName[0] ); // remove a white-space
1411 load.getline( &_groupName[0], nameSize + 1 );
1415 _isToIgnoreShapes = true; // old behavior
1418 } // --------------------------------------------------------------------------------
1419 bool StdMeshers_ViscousLayers::SetParametersByMesh(const SMESH_Mesh* /*theMesh*/,
1420 const TopoDS_Shape& /*theShape*/)
1424 } // --------------------------------------------------------------------------------
1425 SMESH_ComputeErrorPtr
1426 StdMeshers_ViscousLayers::CheckHypothesis(SMESH_Mesh& theMesh,
1427 const TopoDS_Shape& theShape,
1428 SMESH_Hypothesis::Hypothesis_Status& theStatus)
1430 VISCOUS_3D::_ViscousBuilder builder;
1431 SMESH_ComputeErrorPtr err = builder.CheckHypotheses( theMesh, theShape );
1432 if ( err && !err->IsOK() )
1433 theStatus = SMESH_Hypothesis::HYP_INCOMPAT_HYPS;
1435 theStatus = SMESH_Hypothesis::HYP_OK;
1439 // --------------------------------------------------------------------------------
1440 bool StdMeshers_ViscousLayers::IsShapeWithLayers(int shapeIndex) const
1443 ( std::find( _shapeIds.begin(), _shapeIds.end(), shapeIndex ) != _shapeIds.end() );
1444 return IsToIgnoreShapes() ? !isIn : isIn;
1447 // --------------------------------------------------------------------------------
1448 SMDS_MeshGroup* StdMeshers_ViscousLayers::CreateGroup( const std::string& theName,
1449 SMESH_Mesh& theMesh,
1450 SMDSAbs_ElementType theType)
1452 SMESH_Group* group = 0;
1453 SMDS_MeshGroup* groupDS = 0;
1455 if ( theName.empty() )
1458 if ( SMESH_Mesh::GroupIteratorPtr grIt = theMesh.GetGroups() )
1459 while( grIt->more() && !group )
1461 group = grIt->next();
1463 group->GetGroupDS()->GetType() != theType ||
1464 group->GetName() != theName ||
1465 !dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() ))
1469 group = theMesh.AddGroup( theType, theName.c_str() );
1471 groupDS = & dynamic_cast< SMESHDS_Group* >( group->GetGroupDS() )->SMDSGroup();
1476 // END StdMeshers_ViscousLayers hypothesis
1477 //================================================================================
1479 namespace VISCOUS_3D
1481 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const TopoDS_Vertex& fromV,
1482 const double h0, bool* isRegularEdge = nullptr )
1486 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1487 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1488 gp_Pnt p = BRep_Tool::Pnt( fromV );
1489 gp_Pnt pf = c->Value( f ), pl = c->Value( l );
1490 double distF = p.SquareDistance( pf );
1491 double distL = p.SquareDistance( pl );
1492 c->D1(( distF < distL ? f : l), p, dir );
1493 if ( distL < distF ) dir.Reverse();
1494 bool isDifficult = false;
1495 if ( dir.SquareMagnitude() < h0 * h0 ) // check dir orientation
1497 gp_Pnt& pClose = distF < distL ? pf : pl;
1498 gp_Pnt& pFar = distF < distL ? pl : pf;
1499 gp_Pnt pMid = 0.9 * pClose.XYZ() + 0.1 * pFar.XYZ();
1500 gp_Vec vMid( p, pMid );
1501 double dot = vMid * dir;
1502 double cos2 = dot * dot / dir.SquareMagnitude() / vMid.SquareMagnitude();
1503 if ( cos2 < 0.7 * 0.7 || dot < 0 ) // large angle between dir and vMid
1505 double uClose = distF < distL ? f : l;
1506 double uFar = distF < distL ? l : f;
1507 double r = h0 / SMESH_Algo::EdgeLength( E );
1508 double uMid = ( 1 - r ) * uClose + r * uFar;
1509 pMid = c->Value( uMid );
1510 dir = gp_Vec( p, pMid );
1514 if ( isRegularEdge )
1515 *isRegularEdge = !isDifficult;
1519 //--------------------------------------------------------------------------------
1520 gp_XYZ getEdgeDir( const TopoDS_Edge& E, const SMDS_MeshNode* atNode,
1521 SMESH_MesherHelper& helper)
1524 double f,l; gp_Pnt p;
1525 Handle(Geom_Curve) c = BRep_Tool::Curve( E, f, l );
1526 if ( c.IsNull() ) return gp_XYZ( Precision::Infinite(), 1e100, 1e100 );
1527 double u = helper.GetNodeU( E, atNode );
1531 //--------------------------------------------------------------------------------
1532 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1533 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok/*,
1535 //--------------------------------------------------------------------------------
1536 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Edge& fromE,
1537 const SMDS_MeshNode* node, SMESH_MesherHelper& helper, bool& ok)
1540 Handle(Geom_Curve) c = BRep_Tool::Curve( fromE, f, l );
1543 TopoDS_Vertex v = helper.IthVertex( 0, fromE );
1544 return getFaceDir( F, v, node, helper, ok );
1546 gp_XY uv = helper.GetNodeUV( F, node, 0, &ok );
1547 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
1548 gp_Pnt p; gp_Vec du, dv, norm;
1549 surface->D1( uv.X(),uv.Y(), p, du,dv );
1552 double u = helper.GetNodeU( fromE, node, 0, &ok );
1554 TopAbs_Orientation o = helper.GetSubShapeOri( F.Oriented(TopAbs_FORWARD), fromE);
1555 if ( o == TopAbs_REVERSED )
1558 gp_Vec dir = norm ^ du;
1560 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX &&
1561 helper.IsClosedEdge( fromE ))
1563 if ( fabs(u-f) < fabs(u-l)) c->D1( l, p, dv );
1564 else c->D1( f, p, dv );
1565 if ( o == TopAbs_REVERSED )
1567 gp_Vec dir2 = norm ^ dv;
1568 dir = dir.Normalized() + dir2.Normalized();
1572 //--------------------------------------------------------------------------------
1573 gp_XYZ getFaceDir( const TopoDS_Face& F, const TopoDS_Vertex& fromV,
1574 const SMDS_MeshNode* node, SMESH_MesherHelper& helper,
1575 bool& ok/*, double* cosin*/)
1577 TopoDS_Face faceFrw = F;
1578 faceFrw.Orientation( TopAbs_FORWARD );
1579 //double f,l; TopLoc_Location loc;
1580 TopoDS_Edge edges[2]; // sharing a vertex
1583 TopoDS_Vertex VV[2];
1584 TopExp_Explorer exp( faceFrw, TopAbs_EDGE );
1585 for ( ; exp.More() && nbEdges < 2; exp.Next() )
1587 const TopoDS_Edge& e = TopoDS::Edge( exp.Current() );
1588 if ( SMESH_Algo::isDegenerated( e )) continue;
1589 TopExp::Vertices( e, VV[0], VV[1], /*CumOri=*/true );
1590 if ( VV[1].IsSame( fromV )) {
1591 nbEdges += edges[ 0 ].IsNull();
1594 else if ( VV[0].IsSame( fromV )) {
1595 nbEdges += edges[ 1 ].IsNull();
1600 gp_XYZ dir(0,0,0), edgeDir[2];
1603 // get dirs of edges going fromV
1605 for ( size_t i = 0; i < nbEdges && ok; ++i )
1607 edgeDir[i] = getEdgeDir( edges[i], fromV, 0.1 * SMESH_Algo::EdgeLength( edges[i] ));
1608 double size2 = edgeDir[i].SquareModulus();
1609 if (( ok = size2 > numeric_limits<double>::min() ))
1610 edgeDir[i] /= sqrt( size2 );
1612 if ( !ok ) return dir;
1614 // get angle between the 2 edges
1616 double angle = helper.GetAngle( edges[0], edges[1], faceFrw, fromV, &faceNormal );
1617 if ( Abs( angle ) < 5 * M_PI/180 )
1619 dir = ( faceNormal.XYZ() ^ edgeDir[0].Reversed()) + ( faceNormal.XYZ() ^ edgeDir[1] );
1623 dir = edgeDir[0] + edgeDir[1];
1628 // double angle = faceNormal.Angle( dir );
1629 // *cosin = Cos( angle );
1632 else if ( nbEdges == 1 )
1634 dir = getFaceDir( faceFrw, edges[ edges[0].IsNull() ], node, helper, ok );
1635 //if ( cosin ) *cosin = 1.;
1645 //================================================================================
1647 * \brief Finds concave VERTEXes of a FACE
1649 //================================================================================
1651 bool getConcaveVertices( const TopoDS_Face& F,
1652 SMESH_MesherHelper& helper,
1653 set< TGeomID >* vertices = 0)
1655 // check angles at VERTEXes
1657 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(), 0, error );
1658 for ( size_t iW = 0; iW < wires.size(); ++iW )
1660 const int nbEdges = wires[iW]->NbEdges();
1661 if ( nbEdges < 2 && SMESH_Algo::isDegenerated( wires[iW]->Edge(0)))
1663 for ( int iE1 = 0; iE1 < nbEdges; ++iE1 )
1665 if ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE1 ))) continue;
1666 int iE2 = ( iE1 + 1 ) % nbEdges;
1667 while ( SMESH_Algo::isDegenerated( wires[iW]->Edge( iE2 )))
1668 iE2 = ( iE2 + 1 ) % nbEdges;
1669 TopoDS_Vertex V = wires[iW]->FirstVertex( iE2 );
1670 double angle = helper.GetAngle( wires[iW]->Edge( iE1 ),
1671 wires[iW]->Edge( iE2 ), F, V );
1672 if ( angle < -5. * M_PI / 180. )
1676 vertices->insert( helper.GetMeshDS()->ShapeToIndex( V ));
1680 return vertices ? !vertices->empty() : false;
1683 //================================================================================
1685 * \brief Returns true if a FACE is bound by a concave EDGE
1687 //================================================================================
1689 bool isConcave( const TopoDS_Face& F,
1690 SMESH_MesherHelper& helper,
1691 set< TGeomID >* vertices = 0 )
1693 bool isConcv = false;
1694 // if ( helper.Count( F, TopAbs_WIRE, /*useMap=*/false) > 1 )
1696 gp_Vec2d drv1, drv2;
1698 TopExp_Explorer eExp( F.Oriented( TopAbs_FORWARD ), TopAbs_EDGE );
1699 for ( ; eExp.More(); eExp.Next() )
1701 const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
1702 if ( SMESH_Algo::isDegenerated( E )) continue;
1703 // check if 2D curve is concave
1704 BRepAdaptor_Curve2d curve( E, F );
1705 const int nbIntervals = curve.NbIntervals( GeomAbs_C2 );
1706 TColStd_Array1OfReal intervals(1, nbIntervals + 1 );
1707 curve.Intervals( intervals, GeomAbs_C2 );
1708 bool isConvex = true;
1709 for ( int i = 1; i <= nbIntervals && isConvex; ++i )
1711 double u1 = intervals( i );
1712 double u2 = intervals( i+1 );
1713 curve.D2( 0.5*( u1+u2 ), p, drv1, drv2 );
1714 double cross = drv1 ^ drv2;
1715 if ( E.Orientation() == TopAbs_REVERSED )
1717 isConvex = ( cross > -1e-9 ); // 0.1 );
1721 //cout << "Concave FACE " << helper.GetMeshDS()->ShapeToIndex( F ) << endl;
1730 // check angles at VERTEXes
1731 if ( getConcaveVertices( F, helper, vertices ))
1737 //================================================================================
1739 * \brief Computes minimal distance of face in-FACE nodes from an EDGE
1740 * \param [in] face - the mesh face to treat
1741 * \param [in] nodeOnEdge - a node on the EDGE
1742 * \param [out] faceSize - the computed distance
1743 * \return bool - true if faceSize computed
1745 //================================================================================
1747 bool getDistFromEdge( const SMDS_MeshElement* face,
1748 const SMDS_MeshNode* nodeOnEdge,
1751 faceSize = Precision::Infinite();
1754 int nbN = face->NbCornerNodes();
1755 int iOnE = face->GetNodeIndex( nodeOnEdge );
1756 int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
1757 SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
1758 const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
1759 face->GetNode( iNext[1] ) };
1760 gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
1761 double segLen = -1.;
1762 // look for two neighbor not in-FACE nodes of face
1763 for ( int i = 0; i < 2; ++i )
1765 if (( nNext[i]->GetPosition()->GetDim() != 2 ) &&
1766 ( nodeOnEdge->GetPosition()->GetDim() == 0 || nNext[i]->GetID() < nodeOnEdge->GetID() ))
1768 // look for an in-FACE node
1769 for ( int iN = 0; iN < nbN; ++iN )
1771 if ( iN == iOnE || iN == iNext[i] )
1773 SMESH_TNodeXYZ pInFace = face->GetNode( iN );
1774 gp_XYZ v = pInFace - segEnd;
1777 segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
1778 segLen = segVec.Modulus();
1780 double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
1781 faceSize = Min( faceSize, distToSeg );
1789 //================================================================================
1791 * \brief Return direction of axis or revolution of a surface
1793 //================================================================================
1795 bool getRovolutionAxis( const Adaptor3d_Surface& surface,
1798 switch ( surface.GetType() ) {
1801 gp_Cone cone = surface.Cone();
1802 axis = cone.Axis().Direction();
1805 case GeomAbs_Sphere:
1807 gp_Sphere sphere = surface.Sphere();
1808 axis = sphere.Position().Direction();
1811 case GeomAbs_SurfaceOfRevolution:
1813 axis = surface.AxeOfRevolution().Direction();
1816 //case GeomAbs_SurfaceOfExtrusion:
1817 case GeomAbs_OffsetSurface:
1819 Handle(Adaptor3d_HSurface) base = surface.BasisSurface();
1820 return getRovolutionAxis( base->Surface(), axis );
1822 default: return false;
1827 //--------------------------------------------------------------------------------
1828 // DEBUG. Dump intermediate node positions into a python script
1829 // HOWTO use: run python commands written in a console and defined in /tmp/viscous.py
1830 // to see construction steps of viscous layers
1836 PyDump(SMESH_Mesh& m) {
1837 int tag = 3 + m.GetId();
1838 const char* fname = "/tmp/viscous.py";
1839 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
1840 py = _pyStream = new ofstream(fname);
1841 *py << "import SMESH" << endl
1842 << "from salome.smesh import smeshBuilder" << endl
1843 << "smesh = smeshBuilder.New()" << endl
1844 << "meshSO = salome.myStudy.FindObjectID('0:1:2:" << tag <<"')" << endl
1845 << "mesh = smesh.Mesh( meshSO.GetObject() )"<<endl;
1850 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Viscous Prisms',"
1851 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_ElemGeomType,'=',SMESH.Geom_PENTA))"<<endl;
1852 *py << "mesh.GroupOnFilter(SMESH.VOLUME,'Neg Volumes',"
1853 "smesh.GetFilter(SMESH.VOLUME,SMESH.FT_Volume3D,'<',0))"<<endl;
1857 ~PyDump() { Finish(); cout << "NB FUNCTIONS: " << theNbPyFunc << endl; }
1858 struct MyStream : public ostream
1860 template <class T> ostream & operator<<( const T &anything ) { return *this ; }
1862 void Pause() { py = &_mystream; }
1863 void Resume() { py = _pyStream; }
1867 #define dumpFunction(f) { _dumpFunction(f, __LINE__);}
1868 #define dumpMove(n) { _dumpMove(n, __LINE__);}
1869 #define dumpMoveComm(n,txt) { _dumpMove(n, __LINE__, txt);}
1870 #define dumpCmd(txt) { _dumpCmd(txt, __LINE__);}
1871 void _dumpFunction(const string& fun, int ln)
1872 { if (py) *py<< "def "<<fun<<"(): # "<< ln <<endl; cout<<fun<<"()"<<endl; ++theNbPyFunc; }
1873 void _dumpMove(const SMDS_MeshNode* n, int ln, const char* txt="")
1874 { if (py) *py<< " mesh.MoveNode( "<<n->GetID()<< ", "<< n->X()
1875 << ", "<<n->Y()<<", "<< n->Z()<< ")\t\t # "<< ln <<" "<< txt << endl; }
1876 void _dumpCmd(const string& txt, int ln)
1877 { if (py) *py<< " "<<txt<<" # "<< ln <<endl; }
1878 void dumpFunctionEnd()
1879 { if (py) *py<< " return"<< endl; }
1880 void dumpChangeNodes( const SMDS_MeshElement* f )
1881 { if (py) { *py<< " mesh.ChangeElemNodes( " << f->GetID()<<", [";
1882 for ( int i=1; i < f->NbNodes(); ++i ) *py << f->GetNode(i-1)->GetID()<<", ";
1883 *py << f->GetNode( f->NbNodes()-1 )->GetID() << " ])"<< endl; }}
1884 #define debugMsg( txt ) { cout << "# "<< txt << " (line: " << __LINE__ << ")" << endl; }
1888 struct PyDump { PyDump(SMESH_Mesh&) {} void Finish() {} void Pause() {} void Resume() {} };
1889 #define dumpFunction(f) f
1891 #define dumpMoveComm(n,txt)
1892 #define dumpCmd(txt)
1893 #define dumpFunctionEnd()
1894 #define dumpChangeNodes(f) { if(f) {} } // prevent "unused variable 'f'" warning
1895 #define debugMsg( txt ) {}
1900 using namespace VISCOUS_3D;
1902 //================================================================================
1904 * \brief Constructor of _ViscousBuilder
1906 //================================================================================
1908 _ViscousBuilder::_ViscousBuilder()
1910 _error = SMESH_ComputeError::New(COMPERR_OK);
1914 //================================================================================
1916 * \brief Stores error description and returns false
1918 //================================================================================
1920 bool _ViscousBuilder::error(const string& text, int solidId )
1922 const string prefix = string("Viscous layers builder: ");
1923 _error->myName = COMPERR_ALGO_FAILED;
1924 _error->myComment = prefix + text;
1927 SMESH_subMesh* sm = _mesh->GetSubMeshContaining( solidId );
1928 if ( !sm && !_sdVec.empty() )
1929 sm = _mesh->GetSubMeshContaining( solidId = _sdVec[0]._index );
1930 if ( sm && sm->GetSubShape().ShapeType() == TopAbs_SOLID )
1932 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1933 if ( smError && smError->myAlgo )
1934 _error->myAlgo = smError->myAlgo;
1936 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1938 // set KO to all solids
1939 for ( size_t i = 0; i < _sdVec.size(); ++i )
1941 if ( _sdVec[i]._index == solidId )
1943 sm = _mesh->GetSubMesh( _sdVec[i]._solid );
1944 if ( !sm->IsEmpty() )
1946 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1947 if ( !smError || smError->IsOK() )
1949 smError = SMESH_ComputeError::New( COMPERR_ALGO_FAILED, prefix + "failed");
1950 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
1954 makeGroupOfLE(); // debug
1959 //================================================================================
1961 * \brief At study restoration, restore event listeners used to clear an inferior
1962 * dim sub-mesh modified by viscous layers
1964 //================================================================================
1966 void _ViscousBuilder::RestoreListeners()
1971 //================================================================================
1973 * \brief computes SMESH_ProxyMesh::SubMesh::_n2n
1975 //================================================================================
1977 bool _ViscousBuilder::MakeN2NMap( _MeshOfSolid* pm )
1979 SMESH_subMesh* solidSM = pm->mySubMeshes.front();
1980 TopExp_Explorer fExp( solidSM->GetSubShape(), TopAbs_FACE );
1981 for ( ; fExp.More(); fExp.Next() )
1983 SMESHDS_SubMesh* srcSmDS = pm->GetMeshDS()->MeshElements( fExp.Current() );
1984 const SMESH_ProxyMesh::SubMesh* prxSmDS = pm->GetProxySubMesh( fExp.Current() );
1986 if ( !srcSmDS || !prxSmDS || !srcSmDS->NbElements() || !prxSmDS->NbElements() )
1988 if ( srcSmDS->GetElements()->next() == prxSmDS->GetElements()->next())
1991 if ( srcSmDS->NbElements() != prxSmDS->NbElements() )
1992 return error( "Different nb elements in a source and a proxy sub-mesh", solidSM->GetId());
1994 SMDS_ElemIteratorPtr srcIt = srcSmDS->GetElements();
1995 SMDS_ElemIteratorPtr prxIt = prxSmDS->GetElements();
1996 while( prxIt->more() )
1998 const SMDS_MeshElement* fSrc = srcIt->next();
1999 const SMDS_MeshElement* fPrx = prxIt->next();
2000 if ( fSrc->NbNodes() != fPrx->NbNodes())
2001 return error( "Different elements in a source and a proxy sub-mesh", solidSM->GetId());
2002 for ( int i = 0 ; i < fPrx->NbNodes(); ++i )
2003 pm->setNode2Node( fSrc->GetNode(i), fPrx->GetNode(i), prxSmDS );
2006 pm->_n2nMapComputed = true;
2010 //================================================================================
2012 * \brief Does its job
2014 //================================================================================
2016 SMESH_ComputeErrorPtr _ViscousBuilder::Compute(SMESH_Mesh& theMesh,
2017 const TopoDS_Shape& theShape)
2023 // check if proxy mesh already computed
2024 TopExp_Explorer exp( theShape, TopAbs_SOLID );
2026 return error("No SOLID's in theShape"), _error;
2028 if ( _ViscousListener::GetSolidMesh( _mesh, exp.Current(), /*toCreate=*/false))
2029 return SMESH_ComputeErrorPtr(); // everything already computed
2031 // TODO: ignore already computed SOLIDs
2032 if ( !findSolidsWithLayers())
2035 if ( !findFacesWithLayers() )
2038 if ( !makeEdgesOnShape() )
2041 findPeriodicFaces();
2043 PyDump debugDump( theMesh );
2044 _pyDump = &debugDump;
2047 for ( size_t i = 0; i < _sdVec.size(); ++i )
2050 for ( iSD = 0; iSD < _sdVec.size(); ++iSD ) // find next SOLID to compute
2051 if ( _sdVec[iSD]._before.IsEmpty() &&
2052 !_sdVec[iSD]._solid.IsNull() &&
2053 !_sdVec[iSD]._done )
2055 if ( iSD == _sdVec.size() )
2058 if ( ! makeLayer(_sdVec[iSD]) ) // create _LayerEdge's
2061 if ( _sdVec[iSD]._n2eMap.size() == 0 ) // no layers in a SOLID
2063 _sdVec[iSD]._solid.Nullify();
2067 if ( ! inflate(_sdVec[iSD]) ) // increase length of _LayerEdge's
2070 if ( ! refine(_sdVec[iSD]) ) // create nodes and prisms
2073 if ( ! shrink(_sdVec[iSD]) ) // shrink 2D mesh on FACEs w/o layer
2076 addBoundaryElements(_sdVec[iSD]); // create quadrangles on prism bare sides
2078 _sdVec[iSD]._done = true;
2080 const TopoDS_Shape& solid = _sdVec[iSD]._solid;
2081 for ( iSD = 0; iSD < _sdVec.size(); ++iSD )
2082 _sdVec[iSD]._before.Remove( solid );
2085 makeGroupOfLE(); // debug
2091 //================================================================================
2093 * \brief Check validity of hypotheses
2095 //================================================================================
2097 SMESH_ComputeErrorPtr _ViscousBuilder::CheckHypotheses( SMESH_Mesh& mesh,
2098 const TopoDS_Shape& shape )
2102 if ( _ViscousListener::GetSolidMesh( _mesh, shape, /*toCreate=*/false))
2103 return SMESH_ComputeErrorPtr(); // everything already computed
2106 findSolidsWithLayers( /*checkFaceMesh=*/false );
2107 bool ok = findFacesWithLayers( true );
2109 // remove _MeshOfSolid's of _SolidData's
2110 for ( size_t i = 0; i < _sdVec.size(); ++i )
2111 _ViscousListener::RemoveSolidMesh( _mesh, _sdVec[i]._solid );
2116 return SMESH_ComputeErrorPtr();
2119 //================================================================================
2121 * \brief Finds SOLIDs to compute using viscous layers. Fills _sdVec
2123 //================================================================================
2125 bool _ViscousBuilder::findSolidsWithLayers(const bool checkFaceMesh)
2128 TopTools_IndexedMapOfShape allSolids;
2129 TopExp::MapShapes( _mesh->GetShapeToMesh(), TopAbs_SOLID, allSolids );
2130 _sdVec.reserve( allSolids.Extent());
2132 SMESH_HypoFilter filter;
2133 for ( int i = 1; i <= allSolids.Extent(); ++i )
2135 SMESH_subMesh* sm = _mesh->GetSubMesh( allSolids(i) );
2136 if ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbElements() > 0 )
2137 continue; // solid is already meshed
2138 // TODO: check if algo is hidden
2139 SMESH_Algo* algo = sm->GetAlgo();
2140 if ( !algo ) continue;
2141 // check if all FACEs are meshed, which can be false if Compute() a sub-shape
2142 if ( checkFaceMesh )
2144 bool facesMeshed = true;
2145 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,true);
2146 while ( smIt->more() && facesMeshed )
2148 SMESH_subMesh * faceSM = smIt->next();
2149 if ( faceSM->GetSubShape().ShapeType() != TopAbs_FACE )
2151 facesMeshed = faceSM->IsMeshComputed();
2156 // find StdMeshers_ViscousLayers hyp assigned to the i-th solid
2157 const list <const SMESHDS_Hypothesis *> & allHyps =
2158 algo->GetUsedHypothesis(*_mesh, allSolids(i), /*ignoreAuxiliary=*/false);
2159 _SolidData* soData = 0;
2160 list< const SMESHDS_Hypothesis *>::const_iterator hyp = allHyps.begin();
2161 const StdMeshers_ViscousLayers* viscHyp = 0;
2162 for ( ; hyp != allHyps.end(); ++hyp )
2163 if (( viscHyp = dynamic_cast<const StdMeshers_ViscousLayers*>( *hyp )))
2165 TopoDS_Shape hypShape;
2166 filter.Init( filter.Is( viscHyp ));
2167 _mesh->GetHypothesis( allSolids(i), filter, true, &hypShape );
2171 _MeshOfSolid* proxyMesh = _ViscousListener::GetSolidMesh( _mesh,
2174 _sdVec.push_back( _SolidData( allSolids(i), proxyMesh ));
2175 soData = & _sdVec.back();
2176 soData->_index = getMeshDS()->ShapeToIndex( allSolids(i));
2177 soData->_helper = new SMESH_MesherHelper( *_mesh );
2178 soData->_helper->SetSubShape( allSolids(i) );
2179 _solids.Add( allSolids(i) );
2181 soData->_hyps.push_back( viscHyp );
2182 soData->_hypShapes.push_back( hypShape );
2185 if ( _sdVec.empty() )
2187 ( SMESH_Comment(StdMeshers_ViscousLayers::GetHypType()) << " hypothesis not found",0);
2192 //================================================================================
2194 * \brief Set a _SolidData to be computed before another
2196 //================================================================================
2198 bool _ViscousBuilder::setBefore( _SolidData& solidBefore, _SolidData& solidAfter )
2200 // check possibility to set this order; get all solids before solidBefore
2201 TopTools_IndexedMapOfShape allSolidsBefore;
2202 allSolidsBefore.Add( solidBefore._solid );
2203 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2205 int iSD = _solids.FindIndex( allSolidsBefore(i) );
2208 TopTools_MapIteratorOfMapOfShape soIt( _sdVec[ iSD-1 ]._before );
2209 for ( ; soIt.More(); soIt.Next() )
2210 allSolidsBefore.Add( soIt.Value() );
2213 if ( allSolidsBefore.Contains( solidAfter._solid ))
2216 for ( int i = 1; i <= allSolidsBefore.Extent(); ++i )
2217 solidAfter._before.Add( allSolidsBefore(i) );
2222 //================================================================================
2226 //================================================================================
2228 bool _ViscousBuilder::findFacesWithLayers(const bool onlyWith)
2230 SMESH_MesherHelper helper( *_mesh );
2231 TopExp_Explorer exp;
2233 // collect all faces-to-ignore defined by hyp
2234 for ( size_t i = 0; i < _sdVec.size(); ++i )
2236 // get faces-to-ignore defined by each hyp
2237 typedef const StdMeshers_ViscousLayers* THyp;
2238 typedef std::pair< set<TGeomID>, THyp > TFacesOfHyp;
2239 list< TFacesOfHyp > ignoreFacesOfHyps;
2240 list< THyp >::iterator hyp = _sdVec[i]._hyps.begin();
2241 list< TopoDS_Shape >::iterator hypShape = _sdVec[i]._hypShapes.begin();
2242 for ( ; hyp != _sdVec[i]._hyps.end(); ++hyp, ++hypShape )
2244 ignoreFacesOfHyps.push_back( TFacesOfHyp( set<TGeomID>(), *hyp ));
2245 getIgnoreFaces( _sdVec[i]._solid, *hyp, *hypShape, ignoreFacesOfHyps.back().first );
2248 // fill _SolidData::_face2hyp and check compatibility of hypotheses
2249 const int nbHyps = _sdVec[i]._hyps.size();
2252 // check if two hypotheses define different parameters for the same FACE
2253 list< TFacesOfHyp >::iterator igFacesOfHyp;
2254 for ( exp.Init( _sdVec[i]._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2256 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
2258 igFacesOfHyp = ignoreFacesOfHyps.begin();
2259 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2260 if ( ! igFacesOfHyp->first.count( faceID ))
2263 return error(SMESH_Comment("Several hypotheses define "
2264 "Viscous Layers on the face #") << faceID );
2265 hyp = igFacesOfHyp->second;
2268 _sdVec[i]._face2hyp.insert( make_pair( faceID, hyp ));
2270 _sdVec[i]._ignoreFaceIds.insert( faceID );
2273 // check if two hypotheses define different number of viscous layers for
2274 // adjacent faces of a solid
2275 set< int > nbLayersSet;
2276 igFacesOfHyp = ignoreFacesOfHyps.begin();
2277 for ( ; igFacesOfHyp != ignoreFacesOfHyps.end(); ++igFacesOfHyp )
2279 nbLayersSet.insert( igFacesOfHyp->second->GetNumberLayers() );
2281 if ( nbLayersSet.size() > 1 )
2283 for ( exp.Init( _sdVec[i]._solid, TopAbs_EDGE ); exp.More(); exp.Next() )
2285 PShapeIteratorPtr fIt = helper.GetAncestors( exp.Current(), *_mesh, TopAbs_FACE );
2286 THyp hyp1 = 0, hyp2 = 0;
2287 while( const TopoDS_Shape* face = fIt->next() )
2289 const TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
2290 map< TGeomID, THyp >::iterator f2h = _sdVec[i]._face2hyp.find( faceID );
2291 if ( f2h != _sdVec[i]._face2hyp.end() )
2293 ( hyp1 ? hyp2 : hyp1 ) = f2h->second;
2296 if ( hyp1 && hyp2 &&
2297 hyp1->GetNumberLayers() != hyp2->GetNumberLayers() )
2299 return error("Two hypotheses define different number of "
2300 "viscous layers on adjacent faces");
2304 } // if ( nbHyps > 1 )
2307 _sdVec[i]._ignoreFaceIds.swap( ignoreFacesOfHyps.back().first );
2311 if ( onlyWith ) // is called to check hypotheses compatibility only
2314 // fill _SolidData::_reversedFaceIds
2315 for ( size_t i = 0; i < _sdVec.size(); ++i )
2317 exp.Init( _sdVec[i]._solid.Oriented( TopAbs_FORWARD ), TopAbs_FACE );
2318 for ( ; exp.More(); exp.Next() )
2320 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2321 const TGeomID faceID = getMeshDS()->ShapeToIndex( face );
2322 if ( //!sdVec[i]._ignoreFaceIds.count( faceID ) &&
2323 helper.NbAncestors( face, *_mesh, TopAbs_SOLID ) > 1 &&
2324 helper.IsReversedSubMesh( face ))
2326 _sdVec[i]._reversedFaceIds.insert( faceID );
2331 // Find FACEs to shrink mesh on (solution 2 in issue 0020832): fill in _shrinkShape2Shape
2332 TopTools_IndexedMapOfShape shapes;
2333 std::string structAlgoName = "Hexa_3D";
2334 for ( size_t i = 0; i < _sdVec.size(); ++i )
2337 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_EDGE, shapes);
2338 for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2340 const TopoDS_Shape& edge = shapes(iE);
2341 // find 2 FACEs sharing an EDGE
2343 PShapeIteratorPtr fIt = helper.GetAncestors(edge, *_mesh, TopAbs_FACE, &_sdVec[i]._solid);
2344 while ( fIt->more())
2346 const TopoDS_Shape* f = fIt->next();
2347 FF[ int( !FF[0].IsNull()) ] = *f;
2349 if( FF[1].IsNull() ) continue; // seam edge can be shared by 1 FACE only
2351 // check presence of layers on them
2353 for ( int j = 0; j < 2; ++j )
2354 ignore[j] = _sdVec[i]._ignoreFaceIds.count( getMeshDS()->ShapeToIndex( FF[j] ));
2355 if ( ignore[0] == ignore[1] )
2356 continue; // nothing interesting
2357 TopoDS_Shape fWOL = FF[ ignore[0] ? 0 : 1 ]; // FACE w/o layers
2360 if ( !fWOL.IsNull())
2362 TGeomID edgeInd = getMeshDS()->ShapeToIndex( edge );
2363 _sdVec[i]._shrinkShape2Shape.insert( make_pair( edgeInd, fWOL ));
2368 // Find the SHAPE along which to inflate _LayerEdge based on VERTEX
2370 for ( size_t i = 0; i < _sdVec.size(); ++i )
2373 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_VERTEX, shapes);
2374 for ( int iV = 1; iV <= shapes.Extent(); ++iV )
2376 const TopoDS_Shape& vertex = shapes(iV);
2377 // find faces WOL sharing the vertex
2378 vector< TopoDS_Shape > facesWOL;
2379 size_t totalNbFaces = 0;
2380 PShapeIteratorPtr fIt = helper.GetAncestors(vertex, *_mesh, TopAbs_FACE, &_sdVec[i]._solid );
2381 while ( fIt->more())
2383 const TopoDS_Shape* f = fIt->next();
2385 const int fID = getMeshDS()->ShapeToIndex( *f );
2386 if ( _sdVec[i]._ignoreFaceIds.count ( fID ) /*&& !_sdVec[i]._noShrinkShapes.count( fID )*/)
2387 facesWOL.push_back( *f );
2389 if ( facesWOL.size() == totalNbFaces || facesWOL.empty() )
2390 continue; // no layers at this vertex or no WOL
2391 TGeomID vInd = getMeshDS()->ShapeToIndex( vertex );
2392 switch ( facesWOL.size() )
2396 helper.SetSubShape( facesWOL[0] );
2397 if ( helper.IsRealSeam( vInd )) // inflate along a seam edge?
2399 TopoDS_Shape seamEdge;
2400 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2401 while ( eIt->more() && seamEdge.IsNull() )
2403 const TopoDS_Shape* e = eIt->next();
2404 if ( helper.IsRealSeam( *e ) )
2407 if ( !seamEdge.IsNull() )
2409 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, seamEdge ));
2413 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, facesWOL[0] ));
2418 // find an edge shared by 2 faces
2419 PShapeIteratorPtr eIt = helper.GetAncestors(vertex, *_mesh, TopAbs_EDGE);
2420 while ( eIt->more())
2422 const TopoDS_Shape* e = eIt->next();
2423 if ( helper.IsSubShape( *e, facesWOL[0]) &&
2424 helper.IsSubShape( *e, facesWOL[1]))
2426 _sdVec[i]._shrinkShape2Shape.insert( make_pair( vInd, *e )); break;
2432 return error("Not yet supported case", _sdVec[i]._index);
2437 // Add to _noShrinkShapes sub-shapes of FACE's that can't be shrunk since
2438 // the algo of the SOLID sharing the FACE does not support it or for other reasons
2439 set< string > notSupportAlgos; notSupportAlgos.insert( structAlgoName );
2440 for ( size_t i = 0; i < _sdVec.size(); ++i )
2442 map< TGeomID, TopoDS_Shape >::iterator e2f = _sdVec[i]._shrinkShape2Shape.begin();
2443 for ( ; e2f != _sdVec[i]._shrinkShape2Shape.end(); ++e2f )
2445 const TopoDS_Shape& fWOL = e2f->second;
2446 const TGeomID edgeID = e2f->first;
2447 TGeomID faceID = getMeshDS()->ShapeToIndex( fWOL );
2448 TopoDS_Shape edge = getMeshDS()->IndexToShape( edgeID );
2449 if ( edge.ShapeType() != TopAbs_EDGE )
2450 continue; // shrink shape is VERTEX
2453 PShapeIteratorPtr soIt = helper.GetAncestors(fWOL, *_mesh, TopAbs_SOLID);
2454 while ( soIt->more() && solid.IsNull() )
2456 const TopoDS_Shape* so = soIt->next();
2457 if ( !so->IsSame( _sdVec[i]._solid ))
2460 if ( solid.IsNull() )
2463 bool noShrinkE = false;
2464 SMESH_Algo* algo = _mesh->GetSubMesh( solid )->GetAlgo();
2465 bool isStructured = ( algo && algo->GetName() == structAlgoName );
2466 size_t iSolid = _solids.FindIndex( solid ) - 1;
2467 if ( iSolid < _sdVec.size() && _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2469 // the adjacent SOLID has NO layers on fWOL;
2470 // shrink allowed if
2471 // - there are layers on the EDGE in the adjacent SOLID
2472 // - there are NO layers in the adjacent SOLID && algo is unstructured and computed later
2473 bool hasWLAdj = (_sdVec[iSolid]._shrinkShape2Shape.count( edgeID ));
2474 bool shrinkAllowed = (( hasWLAdj ) ||
2475 ( !isStructured && setBefore( _sdVec[ i ], _sdVec[ iSolid ] )));
2476 noShrinkE = !shrinkAllowed;
2478 else if ( iSolid < _sdVec.size() )
2480 // the adjacent SOLID has layers on fWOL;
2481 // check if SOLID's mesh is unstructured and then try to set it
2482 // to be computed after the i-th solid
2483 if ( isStructured || !setBefore( _sdVec[ i ], _sdVec[ iSolid ] ))
2484 noShrinkE = true; // don't shrink fWOL
2488 // the adjacent SOLID has NO layers at all
2489 noShrinkE = isStructured;
2494 _sdVec[i]._noShrinkShapes.insert( edgeID );
2496 // check if there is a collision with to-shrink-from EDGEs in iSolid
2497 // if ( iSolid < _sdVec.size() )
2500 // TopExp::MapShapes( fWOL, TopAbs_EDGE, shapes);
2501 // for ( int iE = 1; iE <= shapes.Extent(); ++iE )
2503 // const TopoDS_Edge& E = TopoDS::Edge( shapes( iE ));
2504 // const TGeomID eID = getMeshDS()->ShapeToIndex( E );
2505 // if ( eID == edgeID ||
2506 // !_sdVec[iSolid]._shrinkShape2Shape.count( eID ) ||
2507 // _sdVec[i]._noShrinkShapes.count( eID ))
2509 // for ( int is1st = 0; is1st < 2; ++is1st )
2511 // TopoDS_Vertex V = helper.IthVertex( is1st, E );
2512 // if ( _sdVec[i]._noShrinkShapes.count( getMeshDS()->ShapeToIndex( V ) ))
2514 // return error("No way to make a conformal mesh with "
2515 // "the given set of faces with layers", _sdVec[i]._index);
2522 // add VERTEXes of the edge in _noShrinkShapes, which is necessary if
2523 // _shrinkShape2Shape is different in the adjacent SOLID
2524 for ( TopoDS_Iterator vIt( edge ); vIt.More(); vIt.Next() )
2526 TGeomID vID = getMeshDS()->ShapeToIndex( vIt.Value() );
2527 bool noShrinkV = false, noShrinkIfAdjMeshed = false;
2529 if ( iSolid < _sdVec.size() )
2531 if ( _sdVec[ iSolid ]._ignoreFaceIds.count( faceID ))
2533 map< TGeomID, TopoDS_Shape >::iterator i2S, i2SAdj;
2534 i2S = _sdVec[i ]._shrinkShape2Shape.find( vID );
2535 i2SAdj = _sdVec[iSolid]._shrinkShape2Shape.find( vID );
2536 if ( i2SAdj == _sdVec[iSolid]._shrinkShape2Shape.end() )
2537 noShrinkV = (( isStructured ) ||
2538 ( noShrinkIfAdjMeshed = i2S->second.ShapeType() == TopAbs_EDGE ));
2540 noShrinkV = ( ! i2S->second.IsSame( i2SAdj->second ));
2544 noShrinkV = noShrinkE;
2549 // the adjacent SOLID has NO layers at all
2556 noShrinkV = noShrinkIfAdjMeshed =
2557 ( _sdVec[i]._shrinkShape2Shape[ vID ].ShapeType() == TopAbs_EDGE );
2561 if ( noShrinkV && noShrinkIfAdjMeshed )
2563 // noShrinkV if FACEs in the adjacent SOLID are meshed
2564 PShapeIteratorPtr fIt = helper.GetAncestors( _sdVec[i]._shrinkShape2Shape[ vID ],
2565 *_mesh, TopAbs_FACE, &solid );
2566 while ( fIt->more() )
2568 const TopoDS_Shape* f = fIt->next();
2569 if ( !f->IsSame( fWOL ))
2571 noShrinkV = ! _mesh->GetSubMesh( *f )->IsEmpty();
2577 _sdVec[i]._noShrinkShapes.insert( vID );
2580 } // loop on _sdVec[i]._shrinkShape2Shape
2581 } // loop on _sdVec to fill in _SolidData::_noShrinkShapes
2584 // add FACEs of other SOLIDs to _ignoreFaceIds
2585 for ( size_t i = 0; i < _sdVec.size(); ++i )
2588 TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
2590 for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
2592 if ( !shapes.Contains( exp.Current() ))
2593 _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
2600 //================================================================================
2602 * \brief Finds FACEs w/o layers for a given SOLID by an hypothesis
2604 //================================================================================
2606 void _ViscousBuilder::getIgnoreFaces(const TopoDS_Shape& solid,
2607 const StdMeshers_ViscousLayers* hyp,
2608 const TopoDS_Shape& hypShape,
2609 set<TGeomID>& ignoreFaceIds)
2611 TopExp_Explorer exp;
2613 vector<TGeomID> ids = hyp->GetBndShapes();
2614 if ( hyp->IsToIgnoreShapes() ) // FACEs to ignore are given
2616 for ( size_t ii = 0; ii < ids.size(); ++ii )
2618 const TopoDS_Shape& s = getMeshDS()->IndexToShape( ids[ii] );
2619 if ( !s.IsNull() && s.ShapeType() == TopAbs_FACE )
2620 ignoreFaceIds.insert( ids[ii] );
2623 else // FACEs with layers are given
2625 exp.Init( solid, TopAbs_FACE );
2626 for ( ; exp.More(); exp.Next() )
2628 TGeomID faceInd = getMeshDS()->ShapeToIndex( exp.Current() );
2629 if ( find( ids.begin(), ids.end(), faceInd ) == ids.end() )
2630 ignoreFaceIds.insert( faceInd );
2634 // ignore internal FACEs if inlets and outlets are specified
2635 if ( hyp->IsToIgnoreShapes() )
2637 TopTools_IndexedDataMapOfShapeListOfShape solidsOfFace;
2638 TopExp::MapShapesAndAncestors( hypShape,
2639 TopAbs_FACE, TopAbs_SOLID, solidsOfFace);
2641 for ( exp.Init( solid, TopAbs_FACE ); exp.More(); exp.Next() )
2643 const TopoDS_Face& face = TopoDS::Face( exp.Current() );
2644 if ( SMESH_MesherHelper::NbAncestors( face, *_mesh, TopAbs_SOLID ) < 2 )
2647 int nbSolids = solidsOfFace.FindFromKey( face ).Extent();
2649 ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( face ));
2654 //================================================================================
2656 * \brief Create the inner surface of the viscous layer and prepare data for infation
2658 //================================================================================
2660 bool _ViscousBuilder::makeLayer(_SolidData& data)
2662 // make a map to find new nodes on sub-shapes shared with other SOLID
2663 map< TGeomID, TNode2Edge* >::iterator s2ne;
2664 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
2665 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
2667 TGeomID shapeInd = s2s->first;
2668 for ( size_t i = 0; i < _sdVec.size(); ++i )
2670 if ( _sdVec[i]._index == data._index ) continue;
2671 map< TGeomID, TopoDS_Shape >::iterator s2s2 = _sdVec[i]._shrinkShape2Shape.find( shapeInd );
2672 if ( s2s2 != _sdVec[i]._shrinkShape2Shape.end() &&
2673 *s2s == *s2s2 && !_sdVec[i]._n2eMap.empty() )
2675 data._s2neMap.insert( make_pair( shapeInd, &_sdVec[i]._n2eMap ));
2681 // Create temporary faces and _LayerEdge's
2683 debugMsg( "######################" );
2684 dumpFunction(SMESH_Comment("makeLayers_")<<data._index);
2686 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
2688 data._stepSize = Precision::Infinite();
2689 data._stepSizeNodes[0] = 0;
2691 SMESH_MesherHelper helper( *_mesh );
2692 helper.SetSubShape( data._solid );
2693 helper.SetElementsOnShape( true );
2695 vector< const SMDS_MeshNode*> newNodes; // of a mesh face
2696 TNode2Edge::iterator n2e2;
2698 // make _LayerEdge's
2699 for ( TopExp_Explorer exp( data._solid, TopAbs_FACE ); exp.More(); exp.Next() )
2701 const TopoDS_Face& F = TopoDS::Face( exp.Current() );
2702 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
2703 const TGeomID id = sm->GetId();
2704 if ( edgesByGeom[ id ]._shape.IsNull() )
2705 continue; // no layers
2706 SMESH_ProxyMesh::SubMesh* proxySub =
2707 data._proxyMesh->getFaceSubM( F, /*create=*/true);
2709 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
2710 if ( !smDS ) return error(SMESH_Comment("Not meshed face ") << id, data._index );
2712 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
2713 while ( eIt->more() )
2715 const SMDS_MeshElement* face = eIt->next();
2716 double faceMaxCosin = -1;
2717 _LayerEdge* maxCosinEdge = 0;
2718 int nbDegenNodes = 0;
2720 newNodes.resize( face->NbCornerNodes() );
2721 for ( size_t i = 0 ; i < newNodes.size(); ++i )
2723 const SMDS_MeshNode* n = face->GetNode( i );
2724 const int shapeID = n->getshapeId();
2725 const bool onDegenShap = helper.IsDegenShape( shapeID );
2726 const bool onDegenEdge = ( onDegenShap && n->GetPosition()->GetDim() == 1 );
2731 // substitute n on a degenerated EDGE with a node on a corresponding VERTEX
2732 const TopoDS_Shape& E = getMeshDS()->IndexToShape( shapeID );
2733 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( E ));
2734 if ( const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() )) {
2744 TNode2Edge::iterator n2e = data._n2eMap.insert({ n, nullptr }).first;
2745 if ( !(*n2e).second )
2748 _LayerEdge* edge = _Factory::NewLayerEdge();
2749 edge->_nodes.push_back( n );
2751 edgesByGeom[ shapeID ]._edges.push_back( edge );
2752 const bool noShrink = data._noShrinkShapes.count( shapeID );
2754 SMESH_TNodeXYZ xyz( n );
2756 // set edge data or find already refined _LayerEdge and get data from it
2757 if (( !noShrink ) &&
2758 ( n->GetPosition()->GetTypeOfPosition() != SMDS_TOP_FACE ) &&
2759 (( s2ne = data._s2neMap.find( shapeID )) != data._s2neMap.end() ) &&
2760 (( n2e2 = (*s2ne).second->find( n )) != s2ne->second->end() ))
2762 _LayerEdge* foundEdge = (*n2e2).second;
2763 gp_XYZ lastPos = edge->Copy( *foundEdge, edgesByGeom[ shapeID ], helper );
2764 foundEdge->_pos.push_back( lastPos );
2765 // location of the last node is modified and we restore it by foundEdge->_pos.back()
2766 const_cast< SMDS_MeshNode* >
2767 ( edge->_nodes.back() )->setXYZ( xyz.X(), xyz.Y(), xyz.Z() );
2773 edge->_nodes.push_back( helper.AddNode( xyz.X(), xyz.Y(), xyz.Z() ));
2775 if ( !setEdgeData( *edge, edgesByGeom[ shapeID ], helper, data ))
2778 if ( edge->_nodes.size() < 2 )
2779 edge->Block( data );
2780 //data._noShrinkShapes.insert( shapeID );
2782 dumpMove(edge->_nodes.back());
2784 if ( edge->_cosin > faceMaxCosin && !edge->Is( _LayerEdge::BLOCKED ))
2786 faceMaxCosin = edge->_cosin;
2787 maxCosinEdge = edge;
2790 newNodes[ i ] = n2e->second->_nodes.back();
2793 data._n2eMap.insert( make_pair( face->GetNode( i ), n2e->second ));
2795 if ( newNodes.size() - nbDegenNodes < 2 )
2798 // create a temporary face
2799 const SMDS_MeshElement* newFace =
2800 new _TmpMeshFace( newNodes, --_tmpFaceID, face->GetShapeID(), face );
2801 proxySub->AddElement( newFace );
2803 // compute inflation step size by min size of element on a convex surface
2804 if ( faceMaxCosin > theMinSmoothCosin )
2805 limitStepSize( data, face, maxCosinEdge );
2807 } // loop on 2D elements on a FACE
2808 } // loop on FACEs of a SOLID to create _LayerEdge's
2811 // Set _LayerEdge::_neibors
2812 TNode2Edge::iterator n2e;
2813 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2815 _EdgesOnShape& eos = data._edgesOnShape[iS];
2816 for ( size_t i = 0; i < eos._edges.size(); ++i )
2818 _LayerEdge* edge = eos._edges[i];
2819 TIDSortedNodeSet nearNodes;
2820 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
2821 while ( fIt->more() )
2823 const SMDS_MeshElement* f = fIt->next();
2824 if ( !data._ignoreFaceIds.count( f->getshapeId() ))
2825 nearNodes.insert( f->begin_nodes(), f->end_nodes() );
2827 nearNodes.erase( edge->_nodes[0] );
2828 edge->_neibors.reserve( nearNodes.size() );
2829 TIDSortedNodeSet::iterator node = nearNodes.begin();
2830 for ( ; node != nearNodes.end(); ++node )
2831 if (( n2e = data._n2eMap.find( *node )) != data._n2eMap.end() )
2832 edge->_neibors.push_back( n2e->second );
2835 // Fix uv of nodes on periodic FACEs (bos #20643)
2837 if ( eos.ShapeType() != TopAbs_EDGE ||
2838 eos.SWOLType() != TopAbs_FACE ||
2842 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
2843 SMESH_MesherHelper faceHelper( *_mesh );
2844 faceHelper.SetSubShape( F );
2845 faceHelper.ToFixNodeParameters( true );
2846 if ( faceHelper.GetPeriodicIndex() == 0 )
2849 SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( F );
2850 if ( !smDS || smDS->GetNodes() == 0 )
2853 bool toCheck = true;
2854 const double tol = 2 * helper.MaxTolerance( F );
2855 for ( SMDS_NodeIteratorPtr nIt = smDS->GetNodes(); nIt->more(); )
2857 const SMDS_MeshNode* node = nIt->next();
2858 gp_XY uvNew( Precision::Infinite(), 0 );
2862 gp_XY uv = faceHelper.GetNodeUV( F, node );
2863 if ( ! faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true ))
2864 break; // projection on F failed
2865 if (( uv - uvNew ).Modulus() < Precision::Confusion() )
2866 break; // current uv is OK
2868 faceHelper.CheckNodeUV( F, node, uvNew, tol, /*force=*/true );
2872 data._epsilon = 1e-7;
2873 if ( data._stepSize < 1. )
2874 data._epsilon *= data._stepSize;
2876 if ( !findShapesToSmooth( data )) // _LayerEdge::_maxLen is computed here
2879 // limit data._stepSize depending on surface curvature and fill data._convexFaces
2880 limitStepSizeByCurvature( data ); // !!! it must be before node substitution in _Simplex
2882 // Set target nodes into _Simplex and _LayerEdge's to _2NearEdges
2883 const SMDS_MeshNode* nn[2];
2884 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
2886 _EdgesOnShape& eos = data._edgesOnShape[iS];
2887 for ( size_t i = 0; i < eos._edges.size(); ++i )
2889 _LayerEdge* edge = eos._edges[i];
2890 if ( edge->IsOnEdge() )
2892 // get neighbor nodes
2893 bool hasData = ( edge->_2neibors->_edges[0] );
2894 if ( hasData ) // _LayerEdge is a copy of another one
2896 nn[0] = edge->_2neibors->srcNode(0);
2897 nn[1] = edge->_2neibors->srcNode(1);
2899 else if ( !findNeiborsOnEdge( edge, nn[0],nn[1], eos, data ))
2903 // set neighbor _LayerEdge's
2904 for ( int j = 0; j < 2; ++j )
2906 if (( n2e = data._n2eMap.find( nn[j] )) == data._n2eMap.end() )
2907 return error("_LayerEdge not found by src node", data._index);
2908 edge->_2neibors->_edges[j] = n2e->second;
2911 edge->SetDataByNeighbors( nn[0], nn[1], eos, helper );
2914 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
2916 _Simplex& s = edge->_simplices[j];
2917 s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
2918 s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
2921 // For an _LayerEdge on a degenerated EDGE, copy some data from
2922 // a corresponding _LayerEdge on a VERTEX
2923 // (issue 52453, pb on a downloaded SampleCase2-Tet-netgen-mephisto.hdf)
2924 if ( helper.IsDegenShape( edge->_nodes[0]->getshapeId() ))
2926 // Generally we should not get here
2927 if ( eos.ShapeType() != TopAbs_EDGE )
2929 TopoDS_Vertex V = helper.IthVertex( 0, TopoDS::Edge( eos._shape ));
2930 const SMDS_MeshNode* vN = SMESH_Algo::VertexNode( V, getMeshDS() );
2931 if (( n2e = data._n2eMap.find( vN )) == data._n2eMap.end() )
2933 const _LayerEdge* vEdge = n2e->second;
2934 edge->_normal = vEdge->_normal;
2935 edge->_lenFactor = vEdge->_lenFactor;
2936 edge->_cosin = vEdge->_cosin;
2939 } // loop on data._edgesOnShape._edges
2940 } // loop on data._edgesOnShape
2942 // fix _LayerEdge::_2neibors on EDGEs to smooth
2943 // map< TGeomID,Handle(Geom_Curve)>::iterator e2c = data._edge2curve.begin();
2944 // for ( ; e2c != data._edge2curve.end(); ++e2c )
2945 // if ( !e2c->second.IsNull() )
2947 // if ( _EdgesOnShape* eos = data.GetShapeEdges( e2c->first ))
2948 // data.Sort2NeiborsOnEdge( eos->_edges );
2955 //================================================================================
2957 * \brief Compute inflation step size by min size of element on a convex surface
2959 //================================================================================
2961 void _ViscousBuilder::limitStepSize( _SolidData& data,
2962 const SMDS_MeshElement* face,
2963 const _LayerEdge* maxCosinEdge )
2966 double minSize = 10 * data._stepSize;
2967 const int nbNodes = face->NbCornerNodes();
2968 for ( int i = 0; i < nbNodes; ++i )
2970 const SMDS_MeshNode* nextN = face->GetNode( SMESH_MesherHelper::WrapIndex( i+1, nbNodes ));
2971 const SMDS_MeshNode* curN = face->GetNode( i );
2972 if ( nextN->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ||
2973 curN-> GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
2975 double dist = SMESH_TNodeXYZ( curN ).Distance( nextN );
2976 if ( dist < minSize )
2977 minSize = dist, iN = i;
2980 double newStep = 0.8 * minSize / maxCosinEdge->_lenFactor;
2981 if ( newStep < data._stepSize )
2983 data._stepSize = newStep;
2984 data._stepSizeCoeff = 0.8 / maxCosinEdge->_lenFactor;
2985 data._stepSizeNodes[0] = face->GetNode( iN );
2986 data._stepSizeNodes[1] = face->GetNode( SMESH_MesherHelper::WrapIndex( iN+1, nbNodes ));
2990 //================================================================================
2992 * \brief Compute inflation step size by min size of element on a convex surface
2994 //================================================================================
2996 void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
2998 if ( minSize < data._stepSize )
3000 data._stepSize = minSize;
3001 if ( data._stepSizeNodes[0] )
3004 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
3005 data._stepSizeCoeff = data._stepSize / dist;
3010 //================================================================================
3012 * \brief Limit data._stepSize by evaluating curvature of shapes and fill data._convexFaces
3014 //================================================================================
3016 void _ViscousBuilder::limitStepSizeByCurvature( _SolidData& data )
3018 SMESH_MesherHelper helper( *_mesh );
3020 BRepLProp_SLProps surfProp( 2, 1e-6 );
3021 data._convexFaces.clear();
3023 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
3025 _EdgesOnShape& eof = data._edgesOnShape[iS];
3026 if ( eof.ShapeType() != TopAbs_FACE ||
3027 data._ignoreFaceIds.count( eof._shapeID ))
3030 TopoDS_Face F = TopoDS::Face( eof._shape );
3031 const TGeomID faceID = eof._shapeID;
3033 BRepAdaptor_Surface surface( F, false );
3034 surfProp.SetSurface( surface );
3036 _ConvexFace cnvFace;
3038 cnvFace._normalsFixed = false;
3039 cnvFace._isTooCurved = false;
3041 double maxCurvature = cnvFace.GetMaxCurvature( data, eof, surfProp, helper );
3042 if ( maxCurvature > 0 )
3044 limitStepSize( data, 0.9 / maxCurvature );
3045 findEdgesToUpdateNormalNearConvexFace( cnvFace, data, helper );
3047 if ( !cnvFace._isTooCurved ) continue;
3049 _ConvexFace & convFace =
3050 data._convexFaces.insert( make_pair( faceID, cnvFace )).first->second;
3052 // skip a closed surface (data._convexFaces is useful anyway)
3053 bool isClosedF = false;
3054 helper.SetSubShape( F );
3055 if ( helper.HasRealSeam() )
3057 // in the closed surface there must be a closed EDGE
3058 for ( TopExp_Explorer eIt( F, TopAbs_EDGE ); eIt.More() && !isClosedF; eIt.Next() )
3059 isClosedF = helper.IsClosedEdge( TopoDS::Edge( eIt.Current() ));
3063 // limit _LayerEdge::_maxLen on the FACE
3064 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
3065 const double minCurvature =
3066 1. / ( eof._hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
3067 map< TGeomID, _EdgesOnShape* >::iterator id2eos = cnvFace._subIdToEOS.find( faceID );
3068 if ( id2eos != cnvFace._subIdToEOS.end() )
3070 _EdgesOnShape& eos = * id2eos->second;
3071 for ( size_t i = 0; i < eos._edges.size(); ++i )
3073 _LayerEdge* ledge = eos._edges[ i ];
3074 gp_XY uv = helper.GetNodeUV( F, ledge->_nodes[0] );
3075 surfProp.SetParameters( uv.X(), uv.Y() );
3076 if ( surfProp.IsCurvatureDefined() )
3078 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
3079 surfProp.MinCurvature() * oriFactor );
3080 if ( curvature > minCurvature )
3081 ledge->SetMaxLen( Min( ledge->_maxLen, 1. / curvature ));
3088 // Fill _ConvexFace::_simplexTestEdges. These _LayerEdge's are used to detect
3089 // prism distortion.
3090 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
3091 if ( id2eos != convFace._subIdToEOS.end() && !id2eos->second->_edges.empty() )
3093 // there are _LayerEdge's on the FACE it-self;
3094 // select _LayerEdge's near EDGEs
3095 _EdgesOnShape& eos = * id2eos->second;
3096 for ( size_t i = 0; i < eos._edges.size(); ++i )
3098 _LayerEdge* ledge = eos._edges[ i ];
3099 for ( size_t j = 0; j < ledge->_simplices.size(); ++j )
3100 if ( ledge->_simplices[j]._nNext->GetPosition()->GetDim() < 2 )
3102 // do not select _LayerEdge's neighboring sharp EDGEs
3103 bool sharpNbr = false;
3104 for ( size_t iN = 0; iN < ledge->_neibors.size() && !sharpNbr; ++iN )
3105 sharpNbr = ( ledge->_neibors[iN]->_cosin > theMinSmoothCosin );
3107 convFace._simplexTestEdges.push_back( ledge );
3114 // where there are no _LayerEdge's on a _ConvexFace,
3115 // as e.g. on a fillet surface with no internal nodes - issue 22580,
3116 // so that collision of viscous internal faces is not detected by check of
3117 // intersection of _LayerEdge's with the viscous internal faces.
3119 set< const SMDS_MeshNode* > usedNodes;
3121 // look for _LayerEdge's with null _sWOL
3122 id2eos = convFace._subIdToEOS.begin();
3123 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
3125 _EdgesOnShape& eos = * id2eos->second;
3126 if ( !eos._sWOL.IsNull() )
3128 for ( size_t i = 0; i < eos._edges.size(); ++i )
3130 _LayerEdge* ledge = eos._edges[ i ];
3131 const SMDS_MeshNode* srcNode = ledge->_nodes[0];
3132 if ( !usedNodes.insert( srcNode ).second ) continue;
3134 for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
3136 usedNodes.insert( ledge->_simplices[i]._nPrev );
3137 usedNodes.insert( ledge->_simplices[i]._nNext );
3139 convFace._simplexTestEdges.push_back( ledge );
3143 } // loop on FACEs of data._solid
3146 //================================================================================
3148 * \brief Detect shapes (and _LayerEdge's on them) to smooth
3150 //================================================================================
3152 bool _ViscousBuilder::findShapesToSmooth( _SolidData& data )
3154 // define allowed thickness
3155 computeGeomSize( data ); // compute data._geomSize and _LayerEdge::_maxLen
3158 // Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
3159 // boundary inclined to the shape at a sharp angle
3161 TopTools_MapOfShape edgesOfSmooFaces;
3162 SMESH_MesherHelper helper( *_mesh );
3165 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3166 data._nbShapesToSmooth = 0;
3168 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3170 _EdgesOnShape& eos = edgesByGeom[iS];
3171 eos._toSmooth = false;
3172 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
3175 double tgtThick = eos._hyp.GetTotalThickness();
3176 SMESH_subMeshIteratorPtr subIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false );
3177 while ( subIt->more() && !eos._toSmooth )
3179 TGeomID iSub = subIt->next()->GetId();
3180 const vector<_LayerEdge*>& eSub = edgesByGeom[ iSub ]._edges;
3181 if ( eSub.empty() ) continue;
3184 for ( size_t i = 0; i < eSub.size() && !eos._toSmooth; ++i )
3185 if ( eSub[i]->_cosin > theMinSmoothCosin )
3187 SMDS_ElemIteratorPtr fIt = eSub[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
3188 while ( fIt->more() && !eos._toSmooth )
3190 const SMDS_MeshElement* face = fIt->next();
3191 if ( face->getshapeId() == eos._shapeID &&
3192 getDistFromEdge( face, eSub[i]->_nodes[0], faceSize ))
3194 eos._toSmooth = needSmoothing( eSub[i]->_cosin,
3195 tgtThick * eSub[i]->_lenFactor,
3201 if ( eos._toSmooth )
3203 for ( TopExp_Explorer eExp( edgesByGeom[iS]._shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
3204 edgesOfSmooFaces.Add( eExp.Current() );
3206 data.PrepareEdgesToSmoothOnFace( &edgesByGeom[iS], /*substituteSrcNodes=*/false );
3208 data._nbShapesToSmooth += eos._toSmooth;
3212 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check EDGEs
3214 _EdgesOnShape& eos = edgesByGeom[iS];
3215 eos._edgeSmoother = NULL;
3216 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_EDGE ) continue;
3217 if ( !eos._hyp.ToSmooth() ) continue;
3219 const TopoDS_Edge& E = TopoDS::Edge( edgesByGeom[iS]._shape );
3220 if ( SMESH_Algo::isDegenerated( E ) || !edgesOfSmooFaces.Contains( E ))
3223 double tgtThick = eos._hyp.GetTotalThickness(), h0 = eos._hyp.Get1stLayerThickness();
3224 for ( TopoDS_Iterator vIt( E ); vIt.More() && !eos._toSmooth; vIt.Next() )
3226 TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
3227 vector<_LayerEdge*>& eV = edgesByGeom[ iV ]._edges;
3228 if ( eV.empty() || eV[0]->Is( _LayerEdge::MULTI_NORMAL )) continue;
3229 gp_Vec eDir = getEdgeDir( E, TopoDS::Vertex( vIt.Value() ), h0 );
3230 double angle = eDir.Angle( eV[0]->_normal );
3231 double cosin = Cos( angle );
3232 double cosinAbs = Abs( cosin );
3233 if ( cosinAbs > theMinSmoothCosin )
3235 // always smooth analytic EDGEs
3236 Handle(Geom_Curve) curve = _Smoother1D::CurveForSmooth( E, eos, helper );
3237 eos._toSmooth = ! curve.IsNull();
3239 // compare tgtThick with the length of an end segment
3240 SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
3241 while ( eIt->more() && !eos._toSmooth )
3243 const SMDS_MeshElement* endSeg = eIt->next();
3244 if ( endSeg->getshapeId() == (int) iS )
3247 SMESH_TNodeXYZ( endSeg->GetNode( 0 )).Distance( endSeg->GetNode( 1 ));
3248 eos._toSmooth = needSmoothing( cosinAbs, tgtThick * eV[0]->_lenFactor, segLen );
3251 if ( eos._toSmooth )
3253 eos._edgeSmoother = new _Smoother1D( curve, eos );
3255 // for ( size_t i = 0; i < eos._edges.size(); ++i )
3256 // eos._edges[i]->Set( _LayerEdge::TO_SMOOTH );
3260 data._nbShapesToSmooth += eos._toSmooth;
3264 // Reset _cosin if no smooth is allowed by the user
3265 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
3267 _EdgesOnShape& eos = edgesByGeom[iS];
3268 if ( eos._edges.empty() ) continue;
3270 if ( !eos._hyp.ToSmooth() )
3271 for ( size_t i = 0; i < eos._edges.size(); ++i )
3272 //eos._edges[i]->SetCosin( 0 ); // keep _cosin to use in limitMaxLenByCurvature()
3273 eos._edges[i]->_lenFactor = 1;
3277 // Fill _eosC1 to make that C1 FACEs and EDGEs between them to be smoothed as a whole
3279 TopTools_MapOfShape c1VV;
3281 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check FACEs
3283 _EdgesOnShape& eos = edgesByGeom[iS];
3284 if ( eos._edges.empty() ||
3285 eos.ShapeType() != TopAbs_FACE ||
3289 // check EDGEs of a FACE
3290 TopTools_MapOfShape checkedEE, allVV;
3291 list< SMESH_subMesh* > smQueue( 1, eos._subMesh ); // sm of FACEs
3292 while ( !smQueue.empty() )
3294 SMESH_subMesh* sm = smQueue.front();
3295 smQueue.pop_front();
3296 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3297 while ( smIt->more() )
3300 if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
3301 allVV.Add( sm->GetSubShape() );
3302 if ( sm->GetSubShape().ShapeType() != TopAbs_EDGE ||
3303 !checkedEE.Add( sm->GetSubShape() ))
3306 _EdgesOnShape* eoe = data.GetShapeEdges( sm->GetId() );
3307 vector<_LayerEdge*>& eE = eoe->_edges;
3308 if ( eE.empty() || !eoe->_sWOL.IsNull() )
3311 bool isC1 = true; // check continuity along an EDGE
3312 for ( size_t i = 0; i < eE.size() && isC1; ++i )
3313 isC1 = ( Abs( eE[i]->_cosin ) < theMinSmoothCosin );
3317 // check that mesh faces are C1 as well
3319 gp_XYZ norm1, norm2;
3320 const SMDS_MeshNode* n = eE[ eE.size() / 2 ]->_nodes[0];
3321 SMDS_ElemIteratorPtr fIt = n->GetInverseElementIterator(SMDSAbs_Face);
3322 if ( !SMESH_MeshAlgos::FaceNormal( fIt->next(), norm1, /*normalized=*/true ))
3324 while ( fIt->more() && isC1 )
3325 isC1 = ( SMESH_MeshAlgos::FaceNormal( fIt->next(), norm2, /*normalized=*/true ) &&
3326 Abs( norm1 * norm2 ) >= ( 1. - theMinSmoothCosin ));
3331 // add the EDGE and an adjacent FACE to _eosC1
3332 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
3333 while ( const TopoDS_Shape* face = fIt->next() )
3335 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3336 if ( !eof ) continue; // other solid
3337 if ( eos._shapeID == eof->_shapeID ) continue;
3338 if ( !eos.HasC1( eof ))
3341 eos._eosC1.push_back( eof );
3342 eof->_toSmooth = false;
3343 data.PrepareEdgesToSmoothOnFace( eof, /*substituteSrcNodes=*/false );
3344 smQueue.push_back( eof->_subMesh );
3346 if ( !eos.HasC1( eoe ))
3348 eos._eosC1.push_back( eoe );
3349 eoe->_toSmooth = false;
3350 data.PrepareEdgesToSmoothOnFace( eoe, /*substituteSrcNodes=*/false );
3355 if ( eos._eosC1.empty() )
3358 // check VERTEXes of C1 FACEs
3359 TopTools_MapIteratorOfMapOfShape vIt( allVV );
3360 for ( ; vIt.More(); vIt.Next() )
3362 _EdgesOnShape* eov = data.GetShapeEdges( vIt.Key() );
3363 if ( !eov || eov->_edges.empty() || !eov->_sWOL.IsNull() )
3366 bool isC1 = true; // check if all adjacent FACEs are in eos._eosC1
3367 PShapeIteratorPtr fIt = helper.GetAncestors( vIt.Key(), *_mesh, TopAbs_FACE );
3368 while ( const TopoDS_Shape* face = fIt->next() )
3370 _EdgesOnShape* eof = data.GetShapeEdges( *face );
3371 if ( !eof ) continue; // other solid
3372 isC1 = ( face->IsSame( eos._shape ) || eos.HasC1( eof ));
3378 eos._eosC1.push_back( eov );
3379 data.PrepareEdgesToSmoothOnFace( eov, /*substituteSrcNodes=*/false );
3380 c1VV.Add( eov->_shape );
3384 } // fill _eosC1 of FACEs
3389 vector< pair< _EdgesOnShape*, gp_XYZ > > dirOfEdges;
3391 for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS ) // check VERTEXes
3393 _EdgesOnShape& eov = edgesByGeom[iS];
3394 if ( eov._edges.empty() ||
3395 eov.ShapeType() != TopAbs_VERTEX ||
3396 c1VV.Contains( eov._shape ))
3398 const TopoDS_Vertex& V = TopoDS::Vertex( eov._shape );
3400 // get directions of surrounding EDGEs
3402 PShapeIteratorPtr fIt = helper.GetAncestors( eov._shape, *_mesh, TopAbs_EDGE );
3403 while ( const TopoDS_Shape* e = fIt->next() )
3405 _EdgesOnShape* eoe = data.GetShapeEdges( *e );
3406 if ( !eoe ) continue; // other solid
3407 gp_XYZ eDir = getEdgeDir( TopoDS::Edge( *e ), V, eoe->_hyp.Get1stLayerThickness() );
3408 if ( !Precision::IsInfinite( eDir.X() ))
3409 dirOfEdges.push_back( make_pair( eoe, eDir.Normalized() ));
3412 // find EDGEs with C1 directions
3413 for ( size_t i = 0; i < dirOfEdges.size(); ++i )
3414 for ( size_t j = i+1; j < dirOfEdges.size(); ++j )
3415 if ( dirOfEdges[i].first && dirOfEdges[j].first )
3417 double dot = dirOfEdges[i].second * dirOfEdges[j].second;
3418 bool isC1 = ( dot < - ( 1. - theMinSmoothCosin ));
3421 double maxEdgeLen = 3 * Min( eov._edges[0]->_maxLen, eov._hyp.GetTotalThickness() );
3422 for ( int isJ = 0; isJ < 2; ++isJ ) // loop on [i,j]
3424 size_t k = isJ ? j : i;
3425 const TopoDS_Edge& e = TopoDS::Edge( dirOfEdges[k].first->_shape );
3426 double eLen = SMESH_Algo::EdgeLength( e );
3427 if ( eLen < maxEdgeLen )
3429 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
3430 if ( oppV.IsSame( V ))
3431 oppV = SMESH_MesherHelper::IthVertex( 1, e );
3432 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
3433 if ( dirOfEdges[k].second * eovOpp->_edges[0]->_normal < 0 )
3434 eov._eosC1.push_back( dirOfEdges[k].first );
3436 dirOfEdges[k].first = 0;
3440 } // fill _eosC1 of VERTEXes
3447 //================================================================================
3449 * \brief Set up _SolidData::_edgesOnShape
3451 //================================================================================
3453 int _ViscousBuilder::makeEdgesOnShape()
3455 const int nbShapes = getMeshDS()->MaxShapeIndex();
3458 for ( size_t i = 0; i < _sdVec.size(); ++i )
3460 _SolidData& data = _sdVec[ i ];
3461 vector< _EdgesOnShape >& edgesByGeom = data._edgesOnShape;
3462 edgesByGeom.resize( nbShapes+1 );
3464 // set data of _EdgesOnShape's
3466 if ( SMESH_subMesh* sm = _mesh->GetSubMesh( data._solid ))
3468 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/false);
3469 while ( smIt->more() )
3472 if ( sm->GetSubShape().ShapeType() == TopAbs_FACE &&
3473 data._ignoreFaceIds.count( sm->GetId() ))
3476 setShapeData( edgesByGeom[ sm->GetId() ], sm, data );
3478 nbShapesWL += ( sm->GetSubShape().ShapeType() == TopAbs_FACE );
3481 if ( nbShapesWL == 0 ) // no shapes with layers in a SOLID
3484 SMESHUtils::FreeVector( edgesByGeom );
3494 //================================================================================
3496 * \brief initialize data of _EdgesOnShape
3498 //================================================================================
3500 void _ViscousBuilder::setShapeData( _EdgesOnShape& eos,
3504 if ( !eos._shape.IsNull() ||
3505 sm->GetSubShape().ShapeType() == TopAbs_WIRE )
3508 SMESH_MesherHelper helper( *_mesh );
3511 eos._shapeID = sm->GetId();
3512 eos._shape = sm->GetSubShape();
3513 if ( eos.ShapeType() == TopAbs_FACE )
3514 eos._shape.Orientation( helper.GetSubShapeOri( data._solid, eos._shape ));
3515 eos._toSmooth = false;
3517 eos._mapper2D = nullptr;
3520 map< TGeomID, TopoDS_Shape >::const_iterator s2s =
3521 data._shrinkShape2Shape.find( eos._shapeID );
3522 if ( s2s != data._shrinkShape2Shape.end() )
3523 eos._sWOL = s2s->second;
3525 eos._isRegularSWOL = true;
3526 if ( eos.SWOLType() == TopAbs_FACE )
3528 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
3529 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( F );
3530 eos._isRegularSWOL = ( ! surface->HasSingularities( 1e-7 ));
3534 if ( data._hyps.size() == 1 )
3536 eos._hyp = data._hyps.back();
3540 // compute average StdMeshers_ViscousLayers parameters
3541 map< TGeomID, const StdMeshers_ViscousLayers* >::iterator f2hyp;
3542 if ( eos.ShapeType() == TopAbs_FACE )
3544 if (( f2hyp = data._face2hyp.find( eos._shapeID )) != data._face2hyp.end() )
3545 eos._hyp = f2hyp->second;
3549 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3550 while ( const TopoDS_Shape* face = fIt->next() )
3552 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3553 if (( f2hyp = data._face2hyp.find( faceID )) != data._face2hyp.end() )
3554 eos._hyp.Add( f2hyp->second );
3560 if ( ! eos._hyp.UseSurfaceNormal() )
3562 if ( eos.ShapeType() == TopAbs_FACE ) // get normals to elements on a FACE
3564 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
3565 if ( !smDS ) return;
3566 eos._faceNormals.reserve( smDS->NbElements() );
3568 double oriFactor = helper.IsReversedSubMesh( TopoDS::Face( eos._shape )) ? 1.: -1.;
3569 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
3570 for ( ; eIt->more(); )
3572 const SMDS_MeshElement* face = eIt->next();
3573 gp_XYZ& norm = eos._faceNormals[face];
3574 if ( !SMESH_MeshAlgos::FaceNormal( face, norm, /*normalized=*/true ))
3575 norm.SetCoord( 0,0,0 );
3579 else // find EOS of adjacent FACEs
3581 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
3582 while ( const TopoDS_Shape* face = fIt->next() )
3584 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
3585 eos._faceEOS.push_back( & data._edgesOnShape[ faceID ]);
3586 if ( eos._faceEOS.back()->_shape.IsNull() )
3587 // avoid using uninitialised _shapeID in GetNormal()
3588 eos._faceEOS.back()->_shapeID = faceID;
3594 //================================================================================
3596 * \brief Returns normal of a face
3598 //================================================================================
3600 bool _EdgesOnShape::GetNormal( const SMDS_MeshElement* face, gp_Vec& norm )
3603 _EdgesOnShape* eos = 0;
3605 if ( face->getshapeId() == _shapeID )
3611 for ( size_t iF = 0; iF < _faceEOS.size() && !eos; ++iF )
3612 if ( face->getshapeId() == _faceEOS[ iF ]->_shapeID )
3613 eos = _faceEOS[ iF ];
3617 ( ok = ( eos->_faceNormals.count( face ) )))
3619 norm = eos->_faceNormals[ face ];
3623 debugMsg( "_EdgesOnShape::Normal() failed for face "<<face->GetID()
3624 << " on _shape #" << _shapeID );
3629 //================================================================================
3631 * \brief EdgesOnShape destructor
3633 //================================================================================
3635 _EdgesOnShape::~_EdgesOnShape()
3637 delete _edgeSmoother;
3641 //================================================================================
3643 * \brief Set data of _LayerEdge needed for smoothing
3645 //================================================================================
3647 bool _ViscousBuilder::setEdgeData(_LayerEdge& edge,
3649 SMESH_MesherHelper& helper,
3652 const SMDS_MeshNode* node = edge._nodes[0]; // source node
3655 edge._maxLen = Precision::Infinite();
3658 edge._curvature = 0;
3660 edge._smooFunction = 0;
3662 // --------------------------
3663 // Compute _normal and _cosin
3664 // --------------------------
3667 edge._lenFactor = 1.;
3668 edge._normal.SetCoord(0,0,0);
3669 _Simplex::GetSimplices( node, edge._simplices, data._ignoreFaceIds, &data );
3671 int totalNbFaces = 0;
3673 std::pair< TopoDS_Face, gp_XYZ > face2Norm[20];
3677 const bool onShrinkShape = !eos._sWOL.IsNull();
3678 const bool useGeometry = (( eos._hyp.UseSurfaceNormal() ) ||
3679 ( eos.ShapeType() != TopAbs_FACE /*&& !onShrinkShape*/ ));
3681 // get geom FACEs the node lies on
3682 //if ( useGeometry )
3684 set<TGeomID> faceIds;
3685 if ( eos.ShapeType() == TopAbs_FACE )
3687 faceIds.insert( eos._shapeID );
3691 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3692 while ( fIt->more() )
3693 faceIds.insert( fIt->next()->getshapeId() );
3695 set<TGeomID>::iterator id = faceIds.begin();
3696 for ( ; id != faceIds.end(); ++id )
3698 const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
3699 if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || data._ignoreFaceIds.count( *id ))
3701 F = TopoDS::Face( s );
3702 face2Norm[ totalNbFaces ].first = F;
3708 bool fromVonF = false;
3711 fromVonF = ( eos.ShapeType() == TopAbs_VERTEX &&
3712 eos.SWOLType() == TopAbs_FACE &&
3715 if ( onShrinkShape && !fromVonF ) // one of faces the node is on has no layers
3717 if ( eos.SWOLType() == TopAbs_EDGE )
3719 // inflate from VERTEX along EDGE
3720 edge._normal = getEdgeDir( TopoDS::Edge( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3721 eos._hyp.Get1stLayerThickness(), &eos._isRegularSWOL );
3723 else if ( eos.ShapeType() == TopAbs_VERTEX )
3725 // inflate from VERTEX along FACE
3726 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Vertex( eos._shape ),
3727 node, helper, normOK/*, &edge._cosin*/);
3731 // inflate from EDGE along FACE
3732 edge._normal = getFaceDir( TopoDS::Face( eos._sWOL ), TopoDS::Edge( eos._shape ),
3733 node, helper, normOK);
3736 else // layers are on all FACEs of SOLID the node is on (or fromVonF)
3739 face2Norm[ totalNbFaces++ ].first = TopoDS::Face( eos._sWOL );
3742 for ( int iF = totalNbFaces - 1; iF >= 0; --iF )
3744 F = face2Norm[ iF ].first;
3745 geomNorm = getFaceNormal( node, F, helper, normOK );
3746 if ( !normOK ) continue;
3749 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3751 face2Norm[ iF ].second = geomNorm.XYZ();
3752 edge._normal += geomNorm.XYZ();
3754 if ( nbOkNorms == 0 )
3755 return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
3757 if ( totalNbFaces >= 3 )
3759 edge._normal = getNormalByOffset( &edge, face2Norm, totalNbFaces, fromVonF );
3762 if ( edge._normal.Modulus() < 1e-3 && nbOkNorms > 1 )
3764 // opposite normals, re-get normals at shifted positions (IPAL 52426)
3765 edge._normal.SetCoord( 0,0,0 );
3766 for ( int iF = 0; iF < totalNbFaces - fromVonF; ++iF )
3768 const TopoDS_Face& F = face2Norm[iF].first;
3769 geomNorm = getFaceNormal( node, F, helper, normOK, /*shiftInside=*/true );
3770 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3773 face2Norm[ iF ].second = geomNorm.XYZ();
3774 edge._normal += face2Norm[ iF ].second;
3779 else // !useGeometry - get _normal using surrounding mesh faces
3781 edge._normal = getWeigthedNormal( &edge );
3783 // set<TGeomID> faceIds;
3785 // SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
3786 // while ( fIt->more() )
3788 // const SMDS_MeshElement* face = fIt->next();
3789 // if ( eos.GetNormal( face, geomNorm ))
3791 // if ( onShrinkShape && !faceIds.insert( face->getshapeId() ).second )
3792 // continue; // use only one mesh face on FACE
3793 // edge._normal += geomNorm.XYZ();
3800 //if ( eos._hyp.UseSurfaceNormal() )
3802 switch ( eos.ShapeType() )
3809 TopoDS_Edge E = TopoDS::Edge( eos._shape );
3810 gp_Vec inFaceDir = getFaceDir( F, E, node, helper, normOK );
3811 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3812 edge._cosin = Cos( angle );
3815 case TopAbs_VERTEX: {
3816 TopoDS_Vertex V = TopoDS::Vertex( eos._shape );
3817 gp_Vec inFaceDir = getFaceDir( face2Norm[0].first , V, node, helper, normOK );
3818 double angle = inFaceDir.Angle( edge._normal ); // [0,PI]
3819 edge._cosin = Cos( angle );
3822 if ( totalNbFaces > 1 || helper.IsSeamShape( node->getshapeId() ))
3823 for ( int iF = 1; iF < totalNbFaces; ++iF )
3825 F = face2Norm[ iF ].first;
3826 inFaceDir = getFaceDir( F, V, node, helper, normOK=true );
3828 if ( onShrinkShape )
3830 gp_Vec faceNorm = getFaceNormal( node, F, helper, normOK );
3831 if ( !normOK ) continue;
3832 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3834 angle = 0.5 * M_PI - faceNorm.Angle( edge._normal );
3835 if ( inFaceDir * edge._normal < 0 )
3836 angle = M_PI - angle;
3840 angle = inFaceDir.Angle( edge._normal );
3842 double cosin = Cos( angle );
3843 if ( Abs( cosin ) > Abs( edge._cosin ))
3844 edge._cosin = cosin;
3850 return error(SMESH_Comment("Invalid shape position of node ")<<node, data._index);
3854 double normSize = edge._normal.SquareModulus();
3855 if ( normSize < numeric_limits<double>::min() )
3856 return error(SMESH_Comment("Bad normal at node ")<< node->GetID(), data._index );
3858 edge._normal /= sqrt( normSize );
3860 if ( edge.Is( _LayerEdge::MULTI_NORMAL ) && edge._nodes.size() == 2 )
3862 getMeshDS()->RemoveFreeNode( edge._nodes.back(), 0, /*fromGroups=*/false );
3863 edge._nodes.resize( 1 );
3864 edge._normal.SetCoord( 0,0,0 );
3865 edge.SetMaxLen( 0 );
3868 // Set the rest data
3869 // --------------------
3871 double realLenFactor = edge.SetCosin( edge._cosin ); // to update edge._lenFactor
3872 // if ( realLenFactor > 3 )
3875 // if ( onShrinkShape )
3877 // edge.Set( _LayerEdge::RISKY_SWOL );
3878 // edge._lenFactor = 2;
3882 // edge._lenFactor = 1;
3886 if ( onShrinkShape )
3888 const SMDS_MeshNode* tgtNode = edge._nodes.back();
3889 if ( SMESHDS_SubMesh* sm = getMeshDS()->MeshElements( data._solid ))
3890 sm->RemoveNode( tgtNode );
3892 // set initial position which is parameters on _sWOL in this case
3893 if ( eos.SWOLType() == TopAbs_EDGE )
3895 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), node, 0, &normOK );
3896 edge._pos.push_back( gp_XYZ( u, 0, 0 ));
3897 if ( edge._nodes.size() > 1 )
3898 getMeshDS()->SetNodeOnEdge( tgtNode, TopoDS::Edge( eos._sWOL ), u );
3900 else // eos.SWOLType() == TopAbs_FACE
3902 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), node, 0, &normOK );
3903 edge._pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
3904 if ( edge._nodes.size() > 1 )
3905 getMeshDS()->SetNodeOnFace( tgtNode, TopoDS::Face( eos._sWOL ), uv.X(), uv.Y() );
3908 if ( edge._nodes.size() > 1 )
3910 // check if an angle between a FACE with layers and SWOL is sharp,
3911 // else the edge should not inflate
3913 for ( int iF = 0; iF < totalNbFaces && F.IsNull(); ++iF ) // find a FACE with VL
3914 if ( ! helper.IsSubShape( eos._sWOL, face2Norm[iF].first ))
3915 F = face2Norm[iF].first;
3918 geomNorm = getFaceNormal( node, F, helper, normOK );
3919 if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
3920 geomNorm.Reverse(); // inside the SOLID
3921 if ( geomNorm * edge._normal < -0.001 )
3923 getMeshDS()->RemoveFreeNode( tgtNode, 0, /*fromGroups=*/false );
3924 edge._nodes.resize( 1 );
3926 else if ( realLenFactor > 3 ) /// -- moved to SetCosin()
3927 //else if ( edge._lenFactor > 3 )
3929 edge._lenFactor = 2;
3930 edge.Set( _LayerEdge::RISKY_SWOL );
3937 edge._pos.push_back( SMESH_TNodeXYZ( node ));
3939 if ( eos.ShapeType() == TopAbs_FACE )
3942 for ( size_t i = 0; i < edge._simplices.size(); ++i )
3944 edge._simplices[i].IsMinAngleOK( edge._pos.back(), angle );
3945 edge._minAngle = Max( edge._minAngle, angle ); // "angle" is actually cosine
3950 // Set neighbor nodes for a _LayerEdge based on EDGE
3952 if ( eos.ShapeType() == TopAbs_EDGE /*||
3953 ( onShrinkShape && posType == SMDS_TOP_VERTEX && fabs( edge._cosin ) < 1e-10 )*/)
3955 edge._2neibors = _Factory::NewNearEdges();
3956 // target nodes instead of source ones will be set later
3962 //================================================================================
3964 * \brief Return normal to a FACE at a node
3965 * \param [in] n - node
3966 * \param [in] face - FACE
3967 * \param [in] helper - helper
3968 * \param [out] isOK - true or false
3969 * \param [in] shiftInside - to find normal at a position shifted inside the face
3970 * \return gp_XYZ - normal
3972 //================================================================================
3974 gp_XYZ _ViscousBuilder::getFaceNormal(const SMDS_MeshNode* node,
3975 const TopoDS_Face& face,
3976 SMESH_MesherHelper& helper,
3983 // get a shifted position
3984 gp_Pnt p = SMESH_TNodeXYZ( node );
3985 gp_XYZ shift( 0,0,0 );
3986 TopoDS_Shape S = helper.GetSubShapeByNode( node, helper.GetMeshDS() );
3987 switch ( S.ShapeType() ) {
3990 shift = getFaceDir( face, TopoDS::Vertex( S ), node, helper, isOK );
3995 shift = getFaceDir( face, TopoDS::Edge( S ), node, helper, isOK );
4003 p.Translate( shift * 1e-5 );
4005 TopLoc_Location loc;
4006 GeomAPI_ProjectPointOnSurf& projector = helper.GetProjector( face, loc, 1e-7 );
4008 if ( !loc.IsIdentity() ) p.Transform( loc.Transformation().Inverted() );
4010 projector.Perform( p );
4011 if ( !projector.IsDone() || projector.NbPoints() < 1 )
4017 projector.LowerDistanceParameters(U,V);
4022 uv = helper.GetNodeUV( face, node, 0, &isOK );
4028 Handle(Geom_Surface) surface = BRep_Tool::Surface( face );
4030 if ( !shiftInside &&
4031 helper.IsDegenShape( node->getshapeId() ) &&
4032 getFaceNormalAtSingularity( uv, face, helper, normal ))
4035 return normal.XYZ();
4038 int pointKind = GeomLib::NormEstim( surface, uv, 1e-5, normal );
4039 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4041 if ( pointKind == IMPOSSIBLE &&
4042 node->GetPosition()->GetDim() == 2 ) // node inside the FACE
4044 // probably NormEstim() failed due to a too high tolerance
4045 pointKind = GeomLib::NormEstim( surface, uv, 1e-20, normal );
4046 isOK = ( pointKind < IMPOSSIBLE );
4048 if ( pointKind < IMPOSSIBLE )
4050 if ( pointKind != REGULAR &&
4052 node->GetPosition()->GetDim() < 2 ) // FACE boundary
4054 gp_XYZ normShift = getFaceNormal( node, face, helper, isOK, /*shiftInside=*/true );
4055 if ( normShift * normal.XYZ() < 0. )
4061 if ( !isOK ) // hard singularity, to call with shiftInside=true ?
4063 const TGeomID faceID = helper.GetMeshDS()->ShapeToIndex( face );
4065 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4066 while ( fIt->more() )
4068 const SMDS_MeshElement* f = fIt->next();
4069 if ( f->getshapeId() == faceID )
4071 isOK = SMESH_MeshAlgos::FaceNormal( f, (gp_XYZ&) normal.XYZ(), /*normalized=*/true );
4074 TopoDS_Face ff = face;
4075 ff.Orientation( TopAbs_FORWARD );
4076 if ( helper.IsReversedSubMesh( ff ))
4083 return normal.XYZ();
4086 //================================================================================
4088 * \brief Try to get normal at a singularity of a surface basing on it's nature
4090 //================================================================================
4092 bool _ViscousBuilder::getFaceNormalAtSingularity( const gp_XY& uv,
4093 const TopoDS_Face& face,
4094 SMESH_MesherHelper& /*helper*/,
4097 BRepAdaptor_Surface surface( face );
4099 if ( !getRovolutionAxis( surface, axis ))
4102 double f,l, d, du, dv;
4103 f = surface.FirstUParameter();
4104 l = surface.LastUParameter();
4105 d = ( uv.X() - f ) / ( l - f );
4106 du = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4107 f = surface.FirstVParameter();
4108 l = surface.LastVParameter();
4109 d = ( uv.Y() - f ) / ( l - f );
4110 dv = ( d < 0.5 ? +1. : -1 ) * 1e-5 * ( l - f );
4113 gp_Pnt2d testUV = uv;
4114 enum { REGULAR = 0, QUASYSINGULAR, CONICAL, IMPOSSIBLE };
4116 Handle(Geom_Surface) geomsurf = surface.Surface().Surface();
4117 for ( int iLoop = 0; true ; ++iLoop )
4119 testUV.SetCoord( testUV.X() + du, testUV.Y() + dv );
4120 if ( GeomLib::NormEstim( geomsurf, testUV, tol, refDir ) == REGULAR )
4127 if ( axis * refDir < 0. )
4135 //================================================================================
4137 * \brief Return a normal at a node weighted with angles taken by faces
4139 //================================================================================
4141 gp_XYZ _ViscousBuilder::getWeigthedNormal( const _LayerEdge* edge )
4143 const SMDS_MeshNode* n = edge->_nodes[0];
4145 gp_XYZ resNorm(0,0,0);
4146 SMESH_TNodeXYZ p0( n ), pP, pN;
4147 for ( size_t i = 0; i < edge->_simplices.size(); ++i )
4149 pP.Set( edge->_simplices[i]._nPrev );
4150 pN.Set( edge->_simplices[i]._nNext );
4151 gp_Vec v0P( p0, pP ), v0N( p0, pN ), vPN( pP, pN ), norm = v0P ^ v0N;
4152 double l0P = v0P.SquareMagnitude();
4153 double l0N = v0N.SquareMagnitude();
4154 double lPN = vPN.SquareMagnitude();
4155 if ( l0P < std::numeric_limits<double>::min() ||
4156 l0N < std::numeric_limits<double>::min() ||
4157 lPN < std::numeric_limits<double>::min() )
4159 double lNorm = norm.SquareMagnitude();
4160 double sin2 = lNorm / l0P / l0N;
4161 double angle = ACos(( v0P * v0N ) / Sqrt( l0P ) / Sqrt( l0N ));
4163 double weight = sin2 * angle / lPN;
4164 resNorm += weight * norm.XYZ() / Sqrt( lNorm );
4170 //================================================================================
4172 * \brief Return a normal at a node by getting a common point of offset planes
4173 * defined by the FACE normals
4175 //================================================================================
4177 gp_XYZ _ViscousBuilder::getNormalByOffset( _LayerEdge* edge,
4178 std::pair< TopoDS_Face, gp_XYZ > f2Normal[],
4182 SMESH_TNodeXYZ p0 = edge->_nodes[0];
4184 gp_XYZ resNorm(0,0,0);
4185 TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( p0._node, getMeshDS() );
4186 if ( V.ShapeType() != TopAbs_VERTEX || nbFaces < 3 )
4188 for ( int i = 0; i < nbFaces; ++i )
4189 resNorm += f2Normal[i].second;
4193 // prepare _OffsetPlane's
4194 vector< _OffsetPlane > pln( nbFaces );
4195 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4197 pln[i]._faceIndex = i;
4198 pln[i]._plane = gp_Pln( p0 + f2Normal[i].second, f2Normal[i].second );
4202 pln[ nbFaces - 1 ]._faceIndex = nbFaces - 1;
4203 pln[ nbFaces - 1 ]._plane = gp_Pln( p0, f2Normal[ nbFaces - 1 ].second );
4206 // intersect neighboring OffsetPlane's
4207 PShapeIteratorPtr edgeIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
4208 while ( const TopoDS_Shape* edge = edgeIt->next() )
4210 int f1 = -1, f2 = -1;
4211 for ( int i = 0; i < nbFaces && f2 < 0; ++i )
4212 if ( SMESH_MesherHelper::IsSubShape( *edge, f2Normal[i].first ))
4213 (( f1 < 0 ) ? f1 : f2 ) = i;
4216 pln[ f1 ].ComputeIntersectionLine( pln[ f2 ], TopoDS::Edge( *edge ), TopoDS::Vertex( V ));
4219 // get a common point
4220 gp_XYZ commonPnt( 0, 0, 0 );
4223 for ( int i = 0; i < nbFaces; ++i )
4225 commonPnt += pln[ i ].GetCommonPoint( isPointFound, TopoDS::Vertex( V ));
4226 nbPoints += isPointFound;
4228 gp_XYZ wgtNorm = getWeigthedNormal( edge );
4229 if ( nbPoints == 0 )
4232 commonPnt /= nbPoints;
4233 resNorm = commonPnt - p0;
4237 // choose the best among resNorm and wgtNorm
4238 resNorm.Normalize();
4239 wgtNorm.Normalize();
4240 double resMinDot = std::numeric_limits<double>::max();
4241 double wgtMinDot = std::numeric_limits<double>::max();
4242 for ( int i = 0; i < nbFaces - lastNoOffset; ++i )
4244 resMinDot = Min( resMinDot, resNorm * f2Normal[i].second );
4245 wgtMinDot = Min( wgtMinDot, wgtNorm * f2Normal[i].second );
4248 if ( Max( resMinDot, wgtMinDot ) < theMinSmoothCosin )
4250 edge->Set( _LayerEdge::MULTI_NORMAL );
4253 return ( resMinDot > wgtMinDot ) ? resNorm : wgtNorm;
4256 //================================================================================
4258 * \brief Compute line of intersection of 2 planes
4260 //================================================================================
4262 void _OffsetPlane::ComputeIntersectionLine( _OffsetPlane& pln,
4263 const TopoDS_Edge& E,
4264 const TopoDS_Vertex& V )
4266 int iNext = bool( _faceIndexNext[0] >= 0 );
4267 _faceIndexNext[ iNext ] = pln._faceIndex;
4269 gp_XYZ n1 = _plane.Axis().Direction().XYZ();
4270 gp_XYZ n2 = pln._plane.Axis().Direction().XYZ();
4272 gp_XYZ lineDir = n1 ^ n2;
4274 double x = Abs( lineDir.X() );
4275 double y = Abs( lineDir.Y() );
4276 double z = Abs( lineDir.Z() );
4278 int cooMax; // max coordinate
4280 if (x > z) cooMax = 1;
4284 if (y > z) cooMax = 2;
4289 if ( Abs( lineDir.Coord( cooMax )) < 0.05 )
4291 // parallel planes - intersection is an offset of the common EDGE
4292 gp_Pnt p = BRep_Tool::Pnt( V );
4293 linePos = 0.5 * (( p.XYZ() + n1 ) + ( p.XYZ() + n2 ));
4294 lineDir = getEdgeDir( E, V, 0.1 * SMESH_Algo::EdgeLength( E ));
4298 // the constants in the 2 plane equations
4299 double d1 = - ( _plane.Axis().Direction().XYZ() * _plane.Location().XYZ() );
4300 double d2 = - ( pln._plane.Axis().Direction().XYZ() * pln._plane.Location().XYZ() );
4305 linePos.SetY(( d2*n1.Z() - d1*n2.Z()) / lineDir.X() );
4306 linePos.SetZ(( d1*n2.Y() - d2*n1.Y()) / lineDir.X() );
4309 linePos.SetX(( d1*n2.Z() - d2*n1.Z()) / lineDir.Y() );
4311 linePos.SetZ(( d2*n1.X() - d1*n2.X()) / lineDir.Y() );
4314 linePos.SetX(( d2*n1.Y() - d1*n2.Y()) / lineDir.Z() );
4315 linePos.SetY(( d1*n2.X() - d2*n1.X()) / lineDir.Z() );
4319 gp_Lin& line = _lines[ iNext ];
4320 line.SetDirection( lineDir );
4321 line.SetLocation ( linePos );
4323 _isLineOK[ iNext ] = true;
4326 iNext = bool( pln._faceIndexNext[0] >= 0 );
4327 pln._lines [ iNext ] = line;
4328 pln._faceIndexNext[ iNext ] = this->_faceIndex;
4329 pln._isLineOK [ iNext ] = true;
4332 //================================================================================
4334 * \brief Computes intersection point of two _lines
4336 //================================================================================
4338 gp_XYZ _OffsetPlane::GetCommonPoint(bool& isFound,
4339 const TopoDS_Vertex & V) const
4344 if ( NbLines() == 2 )
4346 gp_Vec lPerp0 = _lines[0].Direction().XYZ() ^ _plane.Axis().Direction().XYZ();
4347 double dot01 = lPerp0 * _lines[1].Direction().XYZ();
4348 if ( Abs( dot01 ) > 0.05 )
4350 gp_Vec l0l1 = _lines[1].Location().XYZ() - _lines[0].Location().XYZ();
4351 double u1 = - ( lPerp0 * l0l1 ) / dot01;
4352 p = ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * u1 );
4357 gp_Pnt pV ( BRep_Tool::Pnt( V ));
4358 gp_Vec lv0( _lines[0].Location(), pV ), lv1(_lines[1].Location(), pV );
4359 double dot0( lv0 * _lines[0].Direction() ), dot1( lv1 * _lines[1].Direction() );
4360 p += 0.5 * ( _lines[0].Location().XYZ() + _lines[0].Direction().XYZ() * dot0 );
4361 p += 0.5 * ( _lines[1].Location().XYZ() + _lines[1].Direction().XYZ() * dot1 );
4369 //================================================================================
4371 * \brief Find 2 neighbor nodes of a node on EDGE
4373 //================================================================================
4375 bool _ViscousBuilder::findNeiborsOnEdge(const _LayerEdge* edge,
4376 const SMDS_MeshNode*& n1,
4377 const SMDS_MeshNode*& n2,
4381 const SMDS_MeshNode* node = edge->_nodes[0];
4382 const int shapeInd = eos._shapeID;
4383 SMESHDS_SubMesh* edgeSM = 0;
4384 if ( eos.ShapeType() == TopAbs_EDGE )
4386 edgeSM = eos._subMesh->GetSubMeshDS();
4387 if ( !edgeSM || edgeSM->NbElements() == 0 )
4388 return error(SMESH_Comment("Not meshed EDGE ") << shapeInd, data._index);
4392 SMDS_ElemIteratorPtr eIt = node->GetInverseElementIterator(SMDSAbs_Edge);
4393 while ( eIt->more() && !n2 )
4395 const SMDS_MeshElement* e = eIt->next();
4396 const SMDS_MeshNode* nNeibor = e->GetNode( 0 );
4397 if ( nNeibor == node ) nNeibor = e->GetNode( 1 );
4400 if (!edgeSM->Contains(e)) continue;
4404 TopoDS_Shape s = SMESH_MesherHelper::GetSubShapeByNode( nNeibor, getMeshDS() );
4405 if ( !SMESH_MesherHelper::IsSubShape( s, eos._sWOL )) continue;
4407 ( iN++ ? n2 : n1 ) = nNeibor;
4410 return error(SMESH_Comment("Wrongly meshed EDGE ") << shapeInd, data._index);
4414 //================================================================================
4416 * \brief Create _Curvature
4418 //================================================================================
4420 _Curvature* _Curvature::New( double avgNormProj, double avgDist )
4422 // double _r; // radius
4423 // double _k; // factor to correct node smoothed position
4424 // double _h2lenRatio; // avgNormProj / (2*avgDist)
4425 // gp_Pnt2d _uv; // UV used in putOnOffsetSurface()
4428 if ( fabs( avgNormProj / avgDist ) > 1./200 )
4430 c = _Factory::NewCurvature();
4431 c->_r = avgDist * avgDist / avgNormProj;
4432 c->_k = avgDist * avgDist / c->_r / c->_r;
4433 //c->_k = avgNormProj / c->_r;
4434 c->_k *= ( c->_r < 0 ? 1/1.1 : 1.1 ); // not to be too restrictive
4435 c->_h2lenRatio = avgNormProj / ( avgDist + avgDist );
4437 c->_uv.SetCoord( 0., 0. );
4442 //================================================================================
4444 * \brief Set _curvature and _2neibors->_plnNorm by 2 neighbor nodes residing the same EDGE
4446 //================================================================================
4448 void _LayerEdge::SetDataByNeighbors( const SMDS_MeshNode* n1,
4449 const SMDS_MeshNode* n2,
4450 const _EdgesOnShape& eos,
4451 SMESH_MesherHelper& helper)
4453 if ( eos.ShapeType() != TopAbs_EDGE )
4455 if ( _curvature && Is( SMOOTHED_C1 ))
4458 gp_XYZ pos = SMESH_TNodeXYZ( _nodes[0] );
4459 gp_XYZ vec1 = pos - SMESH_TNodeXYZ( n1 );
4460 gp_XYZ vec2 = pos - SMESH_TNodeXYZ( n2 );
4464 double sumLen = vec1.Modulus() + vec2.Modulus();
4465 _2neibors->_wgt[0] = 1 - vec1.Modulus() / sumLen;
4466 _2neibors->_wgt[1] = 1 - vec2.Modulus() / sumLen;
4467 double avgNormProj = 0.5 * ( _normal * vec1 + _normal * vec2 );
4468 double avgLen = 0.5 * ( vec1.Modulus() + vec2.Modulus() );
4469 _curvature = _Curvature::New( avgNormProj, avgLen );
4470 // if ( _curvature )
4471 // debugMsg( _nodes[0]->GetID()
4472 // << " CURV r,k: " << _curvature->_r<<","<<_curvature->_k
4473 // << " proj = "<<avgNormProj<< " len = " << avgLen << "| lenDelta(0) = "
4474 // << _curvature->lenDelta(0) );
4478 if ( eos._sWOL.IsNull() )
4480 TopoDS_Edge E = TopoDS::Edge( eos._shape );
4481 // if ( SMESH_Algo::isDegenerated( E ))
4483 gp_XYZ dirE = getEdgeDir( E, _nodes[0], helper );
4484 gp_XYZ plnNorm = dirE ^ _normal;
4485 double proj0 = plnNorm * vec1;
4486 double proj1 = plnNorm * vec2;
4487 if ( fabs( proj0 ) > 1e-10 || fabs( proj1 ) > 1e-10 )
4489 if ( _2neibors->_plnNorm ) delete _2neibors->_plnNorm;
4490 _2neibors->_plnNorm = new gp_XYZ( plnNorm.Normalized() );
4495 //================================================================================
4497 * \brief Copy data from a _LayerEdge of other SOLID and based on the same node;
4498 * this and the other _LayerEdge are inflated along a FACE or an EDGE
4500 //================================================================================
4502 gp_XYZ _LayerEdge::Copy( _LayerEdge& other,
4504 SMESH_MesherHelper& helper )
4506 _nodes = other._nodes;
4507 _normal = other._normal;
4509 _lenFactor = other._lenFactor;
4510 _cosin = other._cosin;
4511 _2neibors = other._2neibors;
4512 _curvature = other._curvature;
4513 _2neibors = other._2neibors;
4514 _maxLen = Precision::Infinite();//other._maxLen;
4518 gp_XYZ lastPos( 0,0,0 );
4519 if ( eos.SWOLType() == TopAbs_EDGE )
4521 double u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes[0] );
4522 _pos.push_back( gp_XYZ( u, 0, 0));
4524 u = helper.GetNodeU( TopoDS::Edge( eos._sWOL ), _nodes.back() );
4529 gp_XY uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes[0]);
4530 _pos.push_back( gp_XYZ( uv.X(), uv.Y(), 0));
4532 uv = helper.GetNodeUV( TopoDS::Face( eos._sWOL ), _nodes.back() );
4533 lastPos.SetX( uv.X() );
4534 lastPos.SetY( uv.Y() );
4539 //================================================================================
4541 * \brief Set _cosin and _lenFactor
4543 //================================================================================
4545 double _LayerEdge::SetCosin( double cosin )
4548 cosin = Abs( _cosin );
4549 //_lenFactor = ( cosin < 1.-1e-12 ) ? 1./sqrt(1-cosin*cosin ) : 1.0;
4550 double realLenFactor;
4551 if ( cosin < 1.-1e-12 )
4553 _lenFactor = realLenFactor = 1./sqrt(1-cosin*cosin );
4558 realLenFactor = Precision::Infinite();
4561 return realLenFactor;
4564 //================================================================================
4566 * \brief Check if another _LayerEdge is a neighbor on EDGE
4568 //================================================================================
4570 bool _LayerEdge::IsNeiborOnEdge( const _LayerEdge* edge ) const
4572 return (( this->_2neibors && this->_2neibors->include( edge )) ||
4573 ( edge->_2neibors && edge->_2neibors->include( this )));
4576 //================================================================================
4578 * \brief Fills a vector<_Simplex >
4580 //================================================================================
4582 void _Simplex::GetSimplices( const SMDS_MeshNode* node,
4583 vector<_Simplex>& simplices,
4584 const set<TGeomID>& ingnoreShapes,
4585 const _SolidData* dataToCheckOri,
4589 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
4590 while ( fIt->more() )
4592 const SMDS_MeshElement* f = fIt->next();
4593 const TGeomID shapeInd = f->getshapeId();
4594 if ( ingnoreShapes.count( shapeInd )) continue;
4595 const int nbNodes = f->NbCornerNodes();
4596 const int srcInd = f->GetNodeIndex( node );
4597 const SMDS_MeshNode* nPrev = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd-1, nbNodes ));
4598 const SMDS_MeshNode* nNext = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+1, nbNodes ));
4599 const SMDS_MeshNode* nOpp = f->GetNode( SMESH_MesherHelper::WrapIndex( srcInd+2, nbNodes ));
4600 if ( dataToCheckOri && dataToCheckOri->_reversedFaceIds.count( shapeInd ))
4601 std::swap( nPrev, nNext );
4602 simplices.push_back( _Simplex( nPrev, nNext, ( nbNodes == 3 ? 0 : nOpp )));
4606 SortSimplices( simplices );
4609 //================================================================================
4611 * \brief Set neighbor simplices side by side
4613 //================================================================================
4615 void _Simplex::SortSimplices(vector<_Simplex>& simplices)
4617 vector<_Simplex> sortedSimplices( simplices.size() );
4618 sortedSimplices[0] = simplices[0];
4620 for ( size_t i = 1; i < simplices.size(); ++i )
4622 for ( size_t j = 1; j < simplices.size(); ++j )
4623 if ( sortedSimplices[i-1]._nNext == simplices[j]._nPrev )
4625 sortedSimplices[i] = simplices[j];
4630 if ( nbFound == simplices.size() - 1 )
4631 simplices.swap( sortedSimplices );
4634 //================================================================================
4636 * \brief DEBUG. Create groups containing temporary data of _LayerEdge's
4638 //================================================================================
4640 void _ViscousBuilder::makeGroupOfLE()
4643 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
4645 if ( _sdVec[i]._n2eMap.empty() ) continue;
4647 dumpFunction( SMESH_Comment("make_LayerEdge_") << i );
4648 TNode2Edge::iterator n2e;
4649 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4651 _LayerEdge* le = n2e->second;
4652 // for ( size_t iN = 1; iN < le->_nodes.size(); ++iN )
4653 // dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[iN-1]->GetID()
4654 // << ", " << le->_nodes[iN]->GetID() <<"])");
4656 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") <<le->_nodes[0]->GetID()
4657 << ", " << le->_nodes.back()->GetID() <<"]) # " << le->_flags );
4662 dumpFunction( SMESH_Comment("makeNormals") << i );
4663 for ( n2e = _sdVec[i]._n2eMap.begin(); n2e != _sdVec[i]._n2eMap.end(); ++n2e )
4665 _LayerEdge* edge = n2e->second;
4666 SMESH_TNodeXYZ nXYZ( edge->_nodes[0] );
4667 nXYZ += edge->_normal * _sdVec[i]._stepSize;
4668 dumpCmd(SMESH_Comment("mesh.AddEdge([ ") << edge->_nodes[0]->GetID()
4669 << ", mesh.AddNode( "<< nXYZ.X()<<","<< nXYZ.Y()<<","<< nXYZ.Z()<<")])");
4673 dumpFunction( SMESH_Comment("makeTmpFaces_") << i );
4674 dumpCmd( "faceId1 = mesh.NbElements()" );
4675 TopExp_Explorer fExp( _sdVec[i]._solid, TopAbs_FACE );
4676 for ( ; fExp.More(); fExp.Next() )
4678 if ( const SMESHDS_SubMesh* sm = _sdVec[i]._proxyMesh->GetProxySubMesh( fExp.Current() ))
4680 if ( sm->NbElements() == 0 ) continue;
4681 SMDS_ElemIteratorPtr fIt = sm->GetElements();
4682 while ( fIt->more())
4684 const SMDS_MeshElement* e = fIt->next();
4685 SMESH_Comment cmd("mesh.AddFace([");
4686 for ( int j = 0; j < e->NbCornerNodes(); ++j )
4687 cmd << e->GetNode(j)->GetID() << (j+1 < e->NbCornerNodes() ? ",": "])");
4692 dumpCmd( "faceId2 = mesh.NbElements()" );
4693 dumpCmd( SMESH_Comment( "mesh.MakeGroup( 'tmpFaces_" ) << i << "',"
4694 << "SMESH.FACE, SMESH.FT_RangeOfIds,'=',"
4695 << "'%s-%s' % (faceId1+1, faceId2))");
4701 //================================================================================
4703 * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
4705 //================================================================================
4707 void _ViscousBuilder::computeGeomSize( _SolidData& data )
4709 data._geomSize = Precision::Infinite();
4710 double intersecDist;
4711 const SMDS_MeshElement* face;
4712 SMESH_MesherHelper helper( *_mesh );
4714 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
4715 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
4716 data._proxyMesh->GetFaces( data._solid )));
4718 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4720 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4721 if ( eos._edges.empty() )
4723 // get neighbor faces, intersection with which should not be considered since
4724 // collisions are avoided by means of smoothing
4725 set< TGeomID > neighborFaces;
4726 if ( eos._hyp.ToSmooth() )
4728 SMESH_subMeshIteratorPtr subIt =
4729 eos._subMesh->getDependsOnIterator(/*includeSelf=*/eos.ShapeType() != TopAbs_FACE );
4730 while ( subIt->more() )
4732 SMESH_subMesh* sm = subIt->next();
4733 PShapeIteratorPtr fIt = helper.GetAncestors( sm->GetSubShape(), *_mesh, TopAbs_FACE );
4734 while ( const TopoDS_Shape* face = fIt->next() )
4735 neighborFaces.insert( getMeshDS()->ShapeToIndex( *face ));
4738 // find intersections
4739 double thinkness = eos._hyp.GetTotalThickness();
4740 for ( size_t i = 0; i < eos._edges.size(); ++i )
4742 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
4743 eos._edges[i]->SetMaxLen( thinkness );
4744 eos._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon, eos, &face );
4745 if ( intersecDist > 0 && face )
4747 data._geomSize = Min( data._geomSize, intersecDist );
4748 if ( !neighborFaces.count( face->getshapeId() ))
4749 eos[i]->SetMaxLen( Min( thinkness, intersecDist / ( face->GetID() < 0 ? 3. : 2. )));
4754 data._maxThickness = 0;
4755 data._minThickness = 1e100;
4756 list< const StdMeshers_ViscousLayers* >::iterator hyp = data._hyps.begin();
4757 for ( ; hyp != data._hyps.end(); ++hyp )
4759 data._maxThickness = Max( data._maxThickness, (*hyp)->GetTotalThickness() );
4760 data._minThickness = Min( data._minThickness, (*hyp)->GetTotalThickness() );
4763 // Limit inflation step size by geometry size found by intersecting
4764 // normals of _LayerEdge's with mesh faces
4765 if ( data._stepSize > 0.3 * data._geomSize )
4766 limitStepSize( data, 0.3 * data._geomSize );
4768 if ( data._stepSize > data._minThickness )
4769 limitStepSize( data, data._minThickness );
4772 // -------------------------------------------------------------------------
4773 // Detect _LayerEdge which can't intersect with opposite or neighbor layer,
4774 // so no need in detecting intersection at each inflation step
4775 // -------------------------------------------------------------------------
4777 int nbSteps = data._maxThickness / data._stepSize;
4778 if ( nbSteps < 3 || nbSteps * data._n2eMap.size() < 100000 )
4781 vector< const SMDS_MeshElement* > closeFaces;
4784 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4786 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
4787 if ( eos._edges.empty() || eos.ShapeType() != TopAbs_FACE )
4790 for ( size_t i = 0; i < eos.size(); ++i )
4792 SMESH_NodeXYZ p( eos[i]->_nodes[0] );
4793 double radius = data._maxThickness + 2 * eos[i]->_maxLen;
4795 searcher->GetElementsInSphere( p, radius, SMDSAbs_Face, closeFaces );
4797 bool toIgnore = true;
4798 for ( size_t iF = 0; iF < closeFaces.size() && toIgnore; ++iF )
4799 if ( !( toIgnore = ( closeFaces[ iF ]->getshapeId() == eos._shapeID ||
4800 data._ignoreFaceIds.count( closeFaces[ iF ]->getshapeId() ))))
4802 // check if a _LayerEdge will inflate in a direction opposite to a direction
4803 // toward a close face
4804 bool allBehind = true;
4805 for ( int iN = 0; iN < closeFaces[ iF ]->NbCornerNodes() && allBehind; ++iN )
4807 SMESH_NodeXYZ pi( closeFaces[ iF ]->GetNode( iN ));
4808 allBehind = (( pi - p ) * eos[i]->_normal < 0.1 * data._stepSize );
4810 toIgnore = allBehind;
4814 if ( toIgnore ) // no need to detect intersection
4816 eos[i]->Set( _LayerEdge::INTERSECTED );
4822 debugMsg( "Nb LE to intersect " << data._n2eMap.size()-nbDetected << ", ignore " << nbDetected );
4827 //================================================================================
4829 * \brief Increase length of _LayerEdge's to reach the required thickness of layers
4831 //================================================================================
4833 bool _ViscousBuilder::inflate(_SolidData& data)
4835 SMESH_MesherHelper helper( *_mesh );
4837 const double tgtThick = data._maxThickness;
4839 if ( data._stepSize < 1. )
4840 data._epsilon = data._stepSize * 1e-7;
4842 debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
4845 findCollisionEdges( data, helper );
4847 limitMaxLenByCurvature( data, helper );
4851 // limit length of _LayerEdge's around MULTI_NORMAL _LayerEdge's
4852 for ( size_t i = 0; i < data._edgesOnShape.size(); ++i )
4853 if ( data._edgesOnShape[i].ShapeType() == TopAbs_VERTEX &&
4854 data._edgesOnShape[i]._edges.size() > 0 &&
4855 data._edgesOnShape[i]._edges[0]->Is( _LayerEdge::MULTI_NORMAL ))
4857 data._edgesOnShape[i]._edges[0]->Unset( _LayerEdge::BLOCKED );
4858 data._edgesOnShape[i]._edges[0]->Block( data );
4861 const double safeFactor = ( 2*data._maxThickness < data._geomSize ) ? 1 : theThickToIntersection;
4863 double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
4864 int nbSteps = 0, nbRepeats = 0;
4865 while ( avgThick < 0.99 )
4867 // new target length
4868 double prevThick = curThick;
4869 curThick += data._stepSize;
4870 if ( curThick > tgtThick )
4872 curThick = tgtThick + tgtThick*( 1.-avgThick ) * nbRepeats;
4876 double stepSize = curThick - prevThick;
4877 updateNormalsOfSmoothed( data, helper, nbSteps, stepSize ); // to ease smoothing
4879 // Elongate _LayerEdge's
4880 dumpFunction(SMESH_Comment("inflate")<<data._index<<"_step"<<nbSteps); // debug
4881 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4883 _EdgesOnShape& eos = data._edgesOnShape[iS];
4884 if ( eos._edges.empty() ) continue;
4886 const double shapeCurThick = Min( curThick, eos._hyp.GetTotalThickness() );
4887 for ( size_t i = 0; i < eos._edges.size(); ++i )
4889 eos._edges[i]->SetNewLength( shapeCurThick, eos, helper );
4894 if ( !updateNormals( data, helper, nbSteps, stepSize )) // to avoid collisions
4897 // Improve and check quality
4898 if ( !smoothAndCheck( data, nbSteps, distToIntersection ))
4902 #ifdef __NOT_INVALIDATE_BAD_SMOOTH
4903 debugMsg("NOT INVALIDATED STEP!");
4904 return error("Smoothing failed", data._index);
4906 dumpFunction(SMESH_Comment("invalidate")<<data._index<<"_step"<<nbSteps); // debug
4907 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4909 _EdgesOnShape& eos = data._edgesOnShape[iS];
4910 for ( size_t i = 0; i < eos._edges.size(); ++i )
4911 eos._edges[i]->InvalidateStep( nbSteps+1, eos );
4915 break; // no more inflating possible
4919 // Evaluate achieved thickness
4921 int nbActiveEdges = 0;
4922 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4924 _EdgesOnShape& eos = data._edgesOnShape[iS];
4925 if ( eos._edges.empty() ) continue;
4927 const double shapeTgtThick = eos._hyp.GetTotalThickness();
4928 for ( size_t i = 0; i < eos._edges.size(); ++i )
4930 if ( eos._edges[i]->_nodes.size() > 1 )
4931 avgThick += Min( 1., eos._edges[i]->_len / shapeTgtThick );
4933 avgThick += shapeTgtThick;
4934 nbActiveEdges += ( ! eos._edges[i]->Is( _LayerEdge::BLOCKED ));
4937 avgThick /= data._n2eMap.size();
4938 debugMsg( "-- Thickness " << curThick << " ("<< avgThick*100 << "%) reached" );
4940 #ifdef BLOCK_INFLATION
4941 if ( nbActiveEdges == 0 )
4943 debugMsg( "-- Stop inflation since all _LayerEdge's BLOCKED " );
4947 if ( distToIntersection < tgtThick * avgThick * safeFactor && avgThick < 0.9 )
4949 debugMsg( "-- Stop inflation since "
4950 << " distToIntersection( "<<distToIntersection<<" ) < avgThick( "
4951 << tgtThick * avgThick << " ) * " << safeFactor );
4957 limitStepSize( data, 0.25 * distToIntersection );
4958 if ( data._stepSizeNodes[0] )
4959 data._stepSize = data._stepSizeCoeff *
4960 SMESH_TNodeXYZ(data._stepSizeNodes[0]).Distance(data._stepSizeNodes[1]);
4962 } // while ( avgThick < 0.99 )
4965 return error("failed at the very first inflation step", data._index);
4967 if ( avgThick < 0.99 )
4969 if ( !data._proxyMesh->_warning || data._proxyMesh->_warning->IsOK() )
4971 data._proxyMesh->_warning.reset
4972 ( new SMESH_ComputeError (COMPERR_WARNING,
4973 SMESH_Comment("Thickness ") << tgtThick <<
4974 " of viscous layers not reached,"
4975 " average reached thickness is " << avgThick*tgtThick));
4979 // Restore position of src nodes moved by inflation on _noShrinkShapes
4980 dumpFunction(SMESH_Comment("restoNoShrink_So")<<data._index); // debug
4981 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
4983 _EdgesOnShape& eos = data._edgesOnShape[iS];
4984 if ( !eos._edges.empty() && eos._edges[0]->_nodes.size() == 1 )
4985 for ( size_t i = 0; i < eos._edges.size(); ++i )
4987 restoreNoShrink( *eos._edges[ i ] );
4992 return safeFactor > 0; // == true (avoid warning: unused variable 'safeFactor')
4995 //================================================================================
4997 * \brief Improve quality of layer inner surface and check intersection
4999 //================================================================================
5001 bool _ViscousBuilder::smoothAndCheck(_SolidData& data,
5003 double & distToIntersection)
5005 if ( data._nbShapesToSmooth == 0 )
5006 return true; // no shapes needing smoothing
5008 bool moved, improved;
5010 vector< _LayerEdge* > movedEdges, badEdges;
5011 vector< _EdgesOnShape* > eosC1; // C1 continues shapes
5012 vector< bool > isConcaveFace;
5014 SMESH_MesherHelper helper(*_mesh);
5015 Handle(ShapeAnalysis_Surface) surface;
5018 for ( int isFace = 0; isFace < 2; ++isFace ) // smooth on [ EDGEs, FACEs ]
5020 const TopAbs_ShapeEnum shapeType = isFace ? TopAbs_FACE : TopAbs_EDGE;
5022 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5024 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5025 if ( !eos._toSmooth ||
5026 eos.ShapeType() != shapeType ||
5027 eos._edges.empty() )
5030 // already smoothed?
5031 // bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= infStep+1 );
5032 // if ( !toSmooth ) continue;
5034 if ( !eos._hyp.ToSmooth() )
5036 // smooth disabled by the user; check validy only
5037 if ( !isFace ) continue;
5039 for ( size_t i = 0; i < eos._edges.size(); ++i )
5041 _LayerEdge* edge = eos._edges[i];
5042 for ( size_t iF = 0; iF < edge->_simplices.size(); ++iF )
5043 if ( !edge->_simplices[iF].IsForward( edge->_nodes[0], edge->_pos.back(), vol ))
5045 // debugMsg( "-- Stop inflation. Bad simplex ("
5046 // << " "<< edge->_nodes[0]->GetID()
5047 // << " "<< edge->_nodes.back()->GetID()
5048 // << " "<< edge->_simplices[iF]._nPrev->GetID()
5049 // << " "<< edge->_simplices[iF]._nNext->GetID() << " ) ");
5051 badEdges.push_back( edge );
5054 if ( !badEdges.empty() )
5058 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5062 continue; // goto the next EDGE or FACE
5066 if ( eos.SWOLType() == TopAbs_FACE )
5068 if ( !F.IsSame( eos._sWOL )) {
5069 F = TopoDS::Face( eos._sWOL );
5070 helper.SetSubShape( F );
5071 surface = helper.GetSurface( F );
5076 F.Nullify(); surface.Nullify();
5078 const TGeomID sInd = eos._shapeID;
5080 // perform smoothing
5082 if ( eos.ShapeType() == TopAbs_EDGE )
5084 dumpFunction(SMESH_Comment("smooth")<<data._index << "_Ed"<<sInd <<"_InfStep"<<infStep);
5086 if ( !eos._edgeSmoother->Perform( data, surface, F, helper ))
5088 // smooth on EDGE's (normally we should not get here)
5092 for ( size_t i = 0; i < eos._edges.size(); ++i )
5094 moved |= eos._edges[i]->SmoothOnEdge( surface, F, helper );
5096 dumpCmd( SMESH_Comment("# end step ")<<step);
5098 while ( moved && step++ < 5 );
5103 else // smooth on FACE
5106 eosC1.push_back( & eos );
5107 eosC1.insert( eosC1.end(), eos._eosC1.begin(), eos._eosC1.end() );
5110 isConcaveFace.resize( eosC1.size() );
5111 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5113 isConcaveFace[ iEOS ] = data._concaveFaces.count( eosC1[ iEOS ]->_shapeID );
5115 if ( eosC1[ iEOS ]->_mapper2D )
5117 // compute node position by boundary node position in structured mesh
5118 dumpFunction(SMESH_Comment("map2dS")<<data._index<<"_Fa"<<eos._shapeID
5119 <<"_InfStep"<<infStep);
5121 eosC1[ iEOS ]->_mapper2D->ComputeNodePositions();
5123 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5124 le->_pos.back() = SMESH_NodeXYZ( le->_nodes.back() );
5130 for ( _LayerEdge* le : eosC1[ iEOS ]->_edges )
5131 if ( le->Is( _LayerEdge::MOVED ) ||
5132 le->Is( _LayerEdge::NEAR_BOUNDARY ))
5133 movedEdges.push_back( le );
5135 makeOffsetSurface( *eosC1[ iEOS ], helper );
5138 int step = 0, stepLimit = 5, nbBad = 0;
5139 while (( ++step <= stepLimit ) || improved )
5141 int oldBadNb = nbBad;
5144 #ifdef INCREMENTAL_SMOOTH
5145 // smooth moved only
5146 if ( !movedEdges.empty() )
5147 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5148 <<"_InfStep"<<infStep<<"_"<<step); // debug
5149 bool findBest = false; // ( step == stepLimit );
5150 for ( size_t i = 0; i < movedEdges.size(); ++i )
5152 movedEdges[i]->Unset( _LayerEdge::SMOOTHED );
5153 if ( movedEdges[i]->Smooth( step, findBest, movedEdges ) > 0 )
5154 badEdges.push_back( movedEdges[i] );
5158 dumpFunction(SMESH_Comment("smooth")<<data._index<<"_Fa"<<sInd
5159 <<"_InfStep"<<infStep<<"_"<<step); // debug
5160 bool findBest = ( step == stepLimit || isConcaveFace[ iEOS ]);
5161 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5163 if ( eosC1[ iEOS ]->_mapper2D )
5165 vector< _LayerEdge* > & edges = eosC1[ iEOS ]->_edges;
5166 for ( size_t i = 0; i < edges.size(); ++i )
5168 edges[i]->Unset( _LayerEdge::SMOOTHED );
5169 if ( edges[i]->Smooth( step, findBest, false ) > 0 )
5170 badEdges.push_back( eos._edges[i] );
5174 nbBad = badEdges.size();
5177 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5179 if ( !badEdges.empty() && step >= stepLimit / 2 )
5181 if ( badEdges[0]->Is( _LayerEdge::ON_CONCAVE_FACE ))
5184 // resolve hard smoothing situation around concave VERTEXes
5185 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5187 vector< _EdgesOnShape* > & eosCoVe = eosC1[ iEOS ]->_eosConcaVer;
5188 for ( size_t i = 0; i < eosCoVe.size(); ++i )
5189 eosCoVe[i]->_edges[0]->MoveNearConcaVer( eosCoVe[i], eosC1[ iEOS ],
5192 // look for the best smooth of _LayerEdge's neighboring badEdges
5194 for ( size_t i = 0; i < badEdges.size(); ++i )
5196 _LayerEdge* ledge = badEdges[i];
5197 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
5199 ledge->_neibors[iN]->Unset( _LayerEdge::SMOOTHED );
5200 nbBad += ledge->_neibors[iN]->Smooth( step, true, /*findBest=*/true );
5202 ledge->Unset( _LayerEdge::SMOOTHED );
5203 nbBad += ledge->Smooth( step, true, /*findBest=*/true );
5205 debugMsg(SMESH_Comment("nbBad = ") << nbBad );
5208 if ( nbBad == oldBadNb &&
5210 step < stepLimit ) // smooth w/o check of validity
5213 dumpFunction(SMESH_Comment("smoothWoCheck")<<data._index<<"_Fa"<<sInd
5214 <<"_InfStep"<<infStep<<"_"<<step); // debug
5215 for ( size_t i = 0; i < movedEdges.size(); ++i )
5217 movedEdges[i]->SmoothWoCheck();
5219 if ( stepLimit < 9 )
5223 improved = ( nbBad < oldBadNb );
5227 if (( step % 3 == 1 ) || ( nbBad > 0 && step >= stepLimit / 2 ))
5228 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5230 putOnOffsetSurface( *eosC1[ iEOS ], infStep, eosC1, step, /*moveAll=*/step == 1 );
5233 } // smoothing steps
5235 // project -- to prevent intersections or to fix bad simplices
5236 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5238 if ( ! eosC1[ iEOS ]->_eosConcaVer.empty() || nbBad > 0 )
5239 putOnOffsetSurface( *eosC1[ iEOS ], -infStep, eosC1 );
5242 //if ( !badEdges.empty() )
5245 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5247 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5249 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5251 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5252 edge->CheckNeiborsOnBoundary( & badEdges );
5253 if (( nbBad > 0 ) ||
5254 ( edge->Is( _LayerEdge::BLOCKED ) && edge->Is( _LayerEdge::NEAR_BOUNDARY )))
5256 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5257 gp_XYZ prevXYZ = edge->PrevCheckPos();
5258 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5259 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5261 debugMsg("Bad simplex ( " << edge->_nodes[0]->GetID()
5262 << " "<< tgtXYZ._node->GetID()
5263 << " "<< edge->_simplices[j]._nPrev->GetID()
5264 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5265 badEdges.push_back( edge );
5272 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5273 nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5279 } // // smooth on FACE's
5281 } // smooth on [ EDGEs, FACEs ]
5283 // Check orientation of simplices of _LayerEdge's on EDGEs and VERTEXes
5285 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5287 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5288 if ( eos.ShapeType() == TopAbs_FACE ||
5289 eos._edges.empty() ||
5290 !eos._sWOL.IsNull() )
5294 for ( size_t i = 0; i < eos._edges.size(); ++i )
5296 _LayerEdge* edge = eos._edges[i];
5297 if ( edge->_nodes.size() < 2 ) continue;
5298 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5299 //SMESH_TNodeXYZ prevXYZ = edge->_nodes[0];
5300 gp_XYZ prevXYZ = edge->PrevCheckPos( &eos );
5301 //const gp_XYZ& prevXYZ = edge->PrevPos();
5302 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5303 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5305 debugMsg("Bad simplex on bnd ( " << edge->_nodes[0]->GetID()
5306 << " "<< tgtXYZ._node->GetID()
5307 << " "<< edge->_simplices[j]._nPrev->GetID()
5308 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5309 badEdges.push_back( edge );
5314 // try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5316 int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5322 // Check if the last segments of _LayerEdge intersects 2D elements;
5323 // checked elements are either temporary faces or faces on surfaces w/o the layers
5325 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
5326 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
5327 data._proxyMesh->GetFaces( data._solid )) );
5329 #ifdef BLOCK_INFLATION
5330 const bool toBlockInfaltion = true;
5332 const bool toBlockInfaltion = false;
5334 distToIntersection = Precision::Infinite();
5336 const SMDS_MeshElement* intFace = 0;
5337 const SMDS_MeshElement* closestFace = 0;
5339 bool is1stBlocked = true; // dbg
5340 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
5342 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
5343 if ( eos._edges.empty() || !eos._sWOL.IsNull() )
5345 for ( size_t i = 0; i < eos._edges.size(); ++i )
5347 if ( eos._edges[i]->Is( _LayerEdge::INTERSECTED ) ||
5348 eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL ))
5350 if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5353 // commented due to "Illegal hash-positionPosition" error in NETGEN
5354 // on Debian60 on viscous_layers_01/B2 case
5355 // Collision; try to deflate _LayerEdge's causing it
5356 // badEdges.clear();
5357 // badEdges.push_back( eos._edges[i] );
5358 // eosC1[0] = & eos;
5359 // int nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5363 // badEdges.clear();
5364 // if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5366 // if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5368 // const SMDS_MeshElement* srcFace =
5369 // eof->_subMesh->GetSubMeshDS()->GetElement( f->getIdInShape() );
5370 // SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5371 // while ( nIt->more() )
5373 // const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5374 // TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5375 // if ( n2e != data._n2eMap.end() )
5376 // badEdges.push_back( n2e->second );
5379 // nbBad = invalidateBadSmooth( data, helper, badEdges, eosC1, infStep );
5384 // if ( eos._edges[i]->FindIntersection( *searcher, dist, data._epsilon, eos, &intFace ))
5391 SMESH_Comment msg("Invalid? normal at node "); msg << eos._edges[i]->_nodes[0]->GetID();
5396 const bool isShorterDist = ( distToIntersection > dist );
5397 if ( toBlockInfaltion || isShorterDist )
5399 // ignore intersection of a _LayerEdge based on a _ConvexFace with a face
5400 // lying on this _ConvexFace
5401 if ( _ConvexFace* convFace = data.GetConvexFace( intFace->getshapeId() ))
5402 if ( convFace->_isTooCurved && convFace->_subIdToEOS.count ( eos._shapeID ))
5405 // ignore intersection of a _LayerEdge based on a FACE with an element on this FACE
5406 // ( avoid limiting the thickness on the case of issue 22576)
5407 if ( intFace->getshapeId() == eos._shapeID )
5410 // ignore intersection with intFace of an adjacent FACE
5411 if ( dist > 0.01 * eos._edges[i]->_len )
5413 bool toIgnore = false;
5414 if ( eos._toSmooth )
5416 const TopoDS_Shape& S = getMeshDS()->IndexToShape( intFace->getshapeId() );
5417 if ( !S.IsNull() && S.ShapeType() == TopAbs_FACE )
5419 TopExp_Explorer sub( eos._shape,
5420 eos.ShapeType() == TopAbs_FACE ? TopAbs_EDGE : TopAbs_VERTEX );
5421 for ( ; !toIgnore && sub.More(); sub.Next() )
5422 // is adjacent - has a common EDGE or VERTEX
5423 toIgnore = ( helper.IsSubShape( sub.Current(), S ));
5425 if ( toIgnore ) // check angle between normals
5428 if ( SMESH_MeshAlgos::FaceNormal( intFace, normal, /*normalized=*/true ))
5429 toIgnore = ( normal * eos._edges[i]->_normal > -0.5 );
5433 if ( !toIgnore ) // check if the edge is a neighbor of intFace
5435 for ( size_t iN = 0; !toIgnore && iN < eos._edges[i]->_neibors.size(); ++iN )
5437 int nInd = intFace->GetNodeIndex( eos._edges[i]->_neibors[ iN ]->_nodes.back() );
5438 toIgnore = ( nInd >= 0 );
5445 // intersection not ignored
5447 if ( toBlockInfaltion &&
5448 dist < ( eos._edges[i]->_len * theThickToIntersection ))
5450 if ( is1stBlocked ) { is1stBlocked = false; // debug
5451 dumpFunction(SMESH_Comment("blockIntersected") <<data._index<<"_InfStep"<<infStep);
5453 eos._edges[i]->Set( _LayerEdge::INTERSECTED ); // not to intersect
5454 eos._edges[i]->Block( data ); // not to inflate
5456 //if ( _EdgesOnShape* eof = data.GetShapeEdges( intFace->getshapeId() ))
5458 // block _LayerEdge's, on top of which intFace is
5459 if ( const _TmpMeshFace* f = dynamic_cast< const _TmpMeshFace*>( intFace ))
5461 const SMDS_MeshElement* srcFace = f->_srcFace;
5462 SMDS_ElemIteratorPtr nIt = srcFace->nodesIterator();
5463 while ( nIt->more() )
5465 const SMDS_MeshNode* srcNode = static_cast<const SMDS_MeshNode*>( nIt->next() );
5466 TNode2Edge::iterator n2e = data._n2eMap.find( srcNode );
5467 if ( n2e != data._n2eMap.end() )
5468 n2e->second->Block( data );
5474 if ( isShorterDist )
5476 distToIntersection = dist;
5478 closestFace = intFace;
5481 } // if ( toBlockInfaltion || isShorterDist )
5482 } // loop on eos._edges
5483 } // loop on data._edgesOnShape
5485 if ( !is1stBlocked )
5490 if ( closestFace && le )
5493 SMDS_MeshElement::iterator nIt = closestFace->begin_nodes();
5494 cout << "#Shortest distance: _LayerEdge nodes: tgt " << le->_nodes.back()->GetID()
5495 << " src " << le->_nodes[0]->GetID()<< ", intersection with face ("
5496 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
5497 << ") distance = " << distToIntersection<< endl;
5504 //================================================================================
5506 * \brief try to fix bad simplices by removing the last inflation step of some _LayerEdge's
5507 * \param [in,out] badSmooEdges - _LayerEdge's to fix
5508 * \return int - resulting nb of bad _LayerEdge's
5510 //================================================================================
5512 int _ViscousBuilder::invalidateBadSmooth( _SolidData& data,
5513 SMESH_MesherHelper& helper,
5514 vector< _LayerEdge* >& badSmooEdges,
5515 vector< _EdgesOnShape* >& eosC1,
5518 if ( badSmooEdges.empty() || infStep == 0 ) return 0;
5520 dumpFunction(SMESH_Comment("invalidateBadSmooth")<<"_S"<<eosC1[0]->_shapeID<<"_InfStep"<<infStep);
5523 INVALIDATED = _LayerEdge::UNUSED_FLAG,
5524 TO_INVALIDATE = _LayerEdge::UNUSED_FLAG * 2,
5525 ADDED = _LayerEdge::UNUSED_FLAG * 4
5527 data.UnmarkEdges( TO_INVALIDATE & INVALIDATED & ADDED );
5530 bool haveInvalidated = true;
5531 while ( haveInvalidated )
5533 haveInvalidated = false;
5534 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5536 _LayerEdge* edge = badSmooEdges[i];
5537 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5539 bool invalidated = false;
5540 if ( edge->Is( TO_INVALIDATE ) && edge->NbSteps() > 1 )
5542 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5543 edge->Block( data );
5544 edge->Set( INVALIDATED );
5545 edge->Unset( TO_INVALIDATE );
5547 haveInvalidated = true;
5550 // look for _LayerEdge's of bad _simplices
5552 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5553 gp_XYZ prevXYZ1 = edge->PrevCheckPos( eos );
5554 //const gp_XYZ& prevXYZ2 = edge->PrevPos();
5555 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5557 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol ))/* &&
5558 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5562 _LayerEdge* ee[2] = { 0,0 };
5563 for ( size_t iN = 0; iN < edge->_neibors.size() && !ee[1] ; ++iN )
5564 if ( edge->_simplices[j].Includes( edge->_neibors[iN]->_nodes.back() ))
5565 ee[ ee[0] != 0 ] = edge->_neibors[iN];
5567 int maxNbSteps = Max( ee[0]->NbSteps(), ee[1]->NbSteps() );
5568 while ( maxNbSteps > edge->NbSteps() && isBad )
5571 for ( int iE = 0; iE < 2; ++iE )
5573 if ( ee[ iE ]->NbSteps() > maxNbSteps &&
5574 ee[ iE ]->NbSteps() > 1 )
5576 _EdgesOnShape* eos = data.GetShapeEdges( ee[ iE ] );
5577 ee[ iE ]->InvalidateStep( ee[ iE ]->NbSteps(), *eos, /*restoreLength=*/true );
5578 ee[ iE ]->Block( data );
5579 ee[ iE ]->Set( INVALIDATED );
5580 haveInvalidated = true;
5583 if (( edge->_simplices[j].IsForward( &prevXYZ1, &tgtXYZ, vol )) /*&&
5584 ( &prevXYZ1 == &prevXYZ2 || edge->_simplices[j].IsForward( &prevXYZ2, &tgtXYZ, vol ))*/)
5588 if ( !ee[0]->Is( ADDED )) badSmooEdges.push_back( ee[0] );
5589 if ( !ee[1]->Is( ADDED )) badSmooEdges.push_back( ee[1] );
5590 ee[0]->Set( ADDED );
5591 ee[1]->Set( ADDED );
5594 ee[0]->Set( TO_INVALIDATE );
5595 ee[1]->Set( TO_INVALIDATE );
5599 if ( !invalidated && nbBad > 0 && edge->NbSteps() > 1 )
5601 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5602 edge->InvalidateStep( edge->NbSteps(), *eos, /*restoreLength=*/true );
5603 edge->Block( data );
5604 edge->Set( INVALIDATED );
5605 edge->Unset( TO_INVALIDATE );
5606 haveInvalidated = true;
5608 } // loop on badSmooEdges
5609 } // while ( haveInvalidated )
5611 // re-smooth on analytical EDGEs
5612 for ( size_t i = 0; i < badSmooEdges.size(); ++i )
5614 _LayerEdge* edge = badSmooEdges[i];
5615 if ( !edge->Is( INVALIDATED )) continue;
5617 _EdgesOnShape* eos = data.GetShapeEdges( edge );
5618 if ( eos->ShapeType() == TopAbs_VERTEX )
5620 PShapeIteratorPtr eIt = helper.GetAncestors( eos->_shape, *_mesh, TopAbs_EDGE );
5621 while ( const TopoDS_Shape* e = eIt->next() )
5622 if ( _EdgesOnShape* eoe = data.GetShapeEdges( *e ))
5623 if ( eoe->_edgeSmoother && eoe->_edgeSmoother->isAnalytic() )
5625 // TopoDS_Face F; Handle(ShapeAnalysis_Surface) surface;
5626 // if ( eoe->SWOLType() == TopAbs_FACE ) {
5627 // F = TopoDS::Face( eoe->_sWOL );
5628 // surface = helper.GetSurface( F );
5630 // eoe->_edgeSmoother->Perform( data, surface, F, helper );
5631 eoe->_edgeSmoother->_anaCurve.Nullify();
5637 // check result of invalidation
5640 for ( size_t iEOS = 0; iEOS < eosC1.size(); ++iEOS )
5642 for ( size_t i = 0; i < eosC1[ iEOS ]->_edges.size(); ++i )
5644 if ( !eosC1[ iEOS ]->_sWOL.IsNull() ) continue;
5645 _LayerEdge* edge = eosC1[ iEOS ]->_edges[i];
5646 SMESH_TNodeXYZ tgtXYZ = edge->_nodes.back();
5647 gp_XYZ prevXYZ = edge->PrevCheckPos( eosC1[ iEOS ]);
5648 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
5649 if ( !edge->_simplices[j].IsForward( &prevXYZ, &tgtXYZ, vol ))
5652 debugMsg("Bad simplex remains ( " << edge->_nodes[0]->GetID()
5653 << " "<< tgtXYZ._node->GetID()
5654 << " "<< edge->_simplices[j]._nPrev->GetID()
5655 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
5664 //================================================================================
5666 * \brief Create an offset surface
5668 //================================================================================
5670 void _ViscousBuilder::makeOffsetSurface( _EdgesOnShape& eos, SMESH_MesherHelper& helper )
5672 if ( eos._offsetSurf.IsNull() ||
5673 eos._edgeForOffset == 0 ||
5674 eos._edgeForOffset->Is( _LayerEdge::BLOCKED ))
5677 Handle(ShapeAnalysis_Surface) baseSurface = helper.GetSurface( TopoDS::Face( eos._shape ));
5680 gp_Pnt tgtP = SMESH_TNodeXYZ( eos._edgeForOffset->_nodes.back() );
5681 /*gp_Pnt2d uv=*/baseSurface->ValueOfUV( tgtP, Precision::Confusion() );
5682 eos._offsetValue = baseSurface->Gap();
5684 eos._offsetSurf.Nullify();
5688 BRepOffsetAPI_MakeOffsetShape offsetMaker;
5689 offsetMaker.PerformByJoin( eos._shape, -eos._offsetValue, Precision::Confusion() );
5690 if ( !offsetMaker.IsDone() ) return;
5692 TopExp_Explorer fExp( offsetMaker.Shape(), TopAbs_FACE );
5693 if ( !fExp.More() ) return;
5695 TopoDS_Face F = TopoDS::Face( fExp.Current() );
5696 Handle(Geom_Surface) surf = BRep_Tool::Surface( F );
5697 if ( surf.IsNull() ) return;
5699 eos._offsetSurf = new ShapeAnalysis_Surface( surf );
5701 catch ( Standard_Failure& )
5706 //================================================================================
5708 * \brief Put nodes of a curved FACE to its offset surface
5710 //================================================================================
5712 void _ViscousBuilder::putOnOffsetSurface( _EdgesOnShape& eos,
5714 vector< _EdgesOnShape* >& eosC1,
5718 _EdgesOnShape * eof = & eos;
5719 if ( eos.ShapeType() != TopAbs_FACE ) // eos is a boundary of C1 FACE, look for the FACE eos
5722 for ( size_t i = 0; i < eosC1.size() && !eof; ++i )
5724 if ( eosC1[i]->_offsetSurf.IsNull() ||
5725 eosC1[i]->ShapeType() != TopAbs_FACE ||
5726 eosC1[i]->_edgeForOffset == 0 ||
5727 eosC1[i]->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5729 if ( SMESH_MesherHelper::IsSubShape( eos._shape, eosC1[i]->_shape ))
5734 eof->_offsetSurf.IsNull() ||
5735 eof->ShapeType() != TopAbs_FACE ||
5736 eof->_edgeForOffset == 0 ||
5737 eof->_edgeForOffset->Is( _LayerEdge::BLOCKED ))
5740 double preci = BRep_Tool::Tolerance( TopoDS::Face( eof->_shape )), vol;
5741 bool neighborHasRiskySWOL = false;
5742 for ( size_t i = 0; i < eos._edges.size(); ++i )
5744 _LayerEdge* edge = eos._edges[i];
5745 edge->Unset( _LayerEdge::MARKED );
5746 if ( edge->Is( _LayerEdge::BLOCKED ) || !edge->_curvature )
5748 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5750 if ( !edge->Is( _LayerEdge::UPD_NORMAL_CONV ))
5753 else if ( moveAll == _LayerEdge::RISKY_SWOL )
5755 if ( !edge->Is( _LayerEdge::RISKY_SWOL ) ||
5759 else if ( !moveAll && !edge->Is( _LayerEdge::MOVED ))
5762 int nbBlockedAround = 0;
5763 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
5765 nbBlockedAround += edge->_neibors[iN]->Is( _LayerEdge::BLOCKED );
5766 if ( edge->_neibors[iN]->Is( _LayerEdge::RISKY_SWOL ) &&
5767 edge->_neibors[iN]->_cosin > 0 )
5768 neighborHasRiskySWOL = true;
5770 if ( nbBlockedAround > 1 )
5773 gp_Pnt tgtP = SMESH_TNodeXYZ( edge->_nodes.back() );
5774 gp_Pnt2d uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, tgtP, preci );
5775 if ( eof->_offsetSurf->Gap() > edge->_len ) continue; // NextValueOfUV() bug
5776 edge->_curvature->_uv = uv;
5777 if ( eof->_offsetSurf->Gap() < 10 * preci ) continue; // same pos
5779 gp_XYZ newP = eof->_offsetSurf->Value( uv ).XYZ();
5780 gp_XYZ prevP = edge->PrevCheckPos();
5783 for ( size_t iS = 0; iS < edge->_simplices.size() && ok; ++iS )
5785 ok = edge->_simplices[iS].IsForward( &prevP, &newP, vol );
5789 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( edge->_nodes.back() );
5790 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5791 edge->_pos.back() = newP;
5793 edge->Set( _LayerEdge::MARKED );
5794 if ( moveAll == _LayerEdge::UPD_NORMAL_CONV )
5796 edge->_normal = ( newP - prevP ).Normalized();
5798 // if ( edge->_len < eof->_offsetValue )
5799 // edge->_len = eof->_offsetValue;
5801 if ( !eos._sWOL.IsNull() ) // RISKY_SWOL
5803 double change = eof->_offsetSurf->Gap() / eof->_offsetValue;
5804 if (( newP - tgtP.XYZ() ) * edge->_normal < 0 )
5805 change = 1 - change;
5807 change = 1 + change;
5808 gp_XYZ shitfVec = tgtP.XYZ() - SMESH_NodeXYZ( edge->_nodes[0] );
5809 gp_XYZ newShiftVec = shitfVec * change;
5810 double shift = edge->_normal * shitfVec;
5811 double newShift = edge->_normal * newShiftVec;
5812 newP = tgtP.XYZ() + edge->_normal * ( newShift - shift );
5814 uv = eof->_offsetSurf->NextValueOfUV( edge->_curvature->_uv, newP, preci );
5815 if ( eof->_offsetSurf->Gap() < edge->_len )
5817 edge->_curvature->_uv = uv;
5818 newP = eof->_offsetSurf->Value( uv ).XYZ();
5820 n->setXYZ( newP.X(), newP.Y(), newP.Z());
5821 if ( !edge->UpdatePositionOnSWOL( n, /*tol=*/10 * edge->_len / ( edge->NbSteps() + 1 ),
5822 eos, eos.GetData().GetHelper() ))
5824 debugMsg("UpdatePositionOnSWOL fails in putOnOffsetSurface()" );
5833 // dumpMove() for debug
5835 for ( ; i < eos._edges.size(); ++i )
5836 if ( eos._edges[i]->Is( _LayerEdge::MARKED ))
5838 if ( i < eos._edges.size() )
5840 dumpFunction(SMESH_Comment("putOnOffsetSurface_") << eos.ShapeTypeLetter() << eos._shapeID
5841 << "_InfStep" << infStep << "_" << Abs( smooStep ));
5842 for ( ; i < eos._edges.size(); ++i )
5844 if ( eos._edges[i]->Is( _LayerEdge::MARKED )) {
5845 dumpMove( eos._edges[i]->_nodes.back() );
5852 _ConvexFace* cnvFace;
5853 if ( moveAll != _LayerEdge::UPD_NORMAL_CONV &&
5854 eos.ShapeType() == TopAbs_FACE &&
5855 (cnvFace = eos.GetData().GetConvexFace( eos._shapeID )) &&
5856 !cnvFace->_normalsFixedOnBorders )
5858 // put on the surface nodes built on FACE boundaries
5859 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5860 while ( smIt->more() )
5862 SMESH_subMesh* sm = smIt->next();
5863 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5864 if ( !subEOS->_sWOL.IsNull() ) continue;
5865 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5867 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::UPD_NORMAL_CONV );
5869 cnvFace->_normalsFixedOnBorders = true;
5874 // negative smooStep means "final step", where we don't treat RISKY_SWOL edges
5875 // as edges based on FACE are a bit late comparing with them
5876 if ( smooStep >= 0 &&
5877 neighborHasRiskySWOL &&
5878 moveAll != _LayerEdge::RISKY_SWOL &&
5879 eos.ShapeType() == TopAbs_FACE )
5881 // put on the surface nodes built on FACE boundaries
5882 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
5883 while ( smIt->more() )
5885 SMESH_subMesh* sm = smIt->next();
5886 _EdgesOnShape* subEOS = eos.GetData().GetShapeEdges( sm->GetId() );
5887 if ( subEOS->_sWOL.IsNull() ) continue;
5888 if ( std::find( eosC1.begin(), eosC1.end(), subEOS ) != eosC1.end() ) continue;
5890 putOnOffsetSurface( *subEOS, infStep, eosC1, smooStep, _LayerEdge::RISKY_SWOL );
5895 //================================================================================
5897 * \brief Return a curve of the EDGE to be used for smoothing and arrange
5898 * _LayerEdge's to be in a consequent order
5900 //================================================================================
5902 Handle(Geom_Curve) _Smoother1D::CurveForSmooth( const TopoDS_Edge& E,
5904 SMESH_MesherHelper& helper)
5906 SMESHDS_SubMesh* smDS = eos._subMesh->GetSubMeshDS();
5908 TopLoc_Location loc; double f,l;
5910 Handle(Geom_Line) line;
5911 Handle(Geom_Circle) circle;
5912 bool isLine, isCirc;
5913 if ( eos._sWOL.IsNull() ) /////////////////////////////////////////// 3D case
5915 // check if the EDGE is a line
5916 Handle(Geom_Curve) curve = BRep_Tool::Curve( E, f, l);
5917 if ( curve->IsKind( STANDARD_TYPE( Geom_TrimmedCurve )))
5918 curve = Handle(Geom_TrimmedCurve)::DownCast( curve )->BasisCurve();
5920 line = Handle(Geom_Line)::DownCast( curve );
5921 circle = Handle(Geom_Circle)::DownCast( curve );
5922 isLine = (!line.IsNull());
5923 isCirc = (!circle.IsNull());
5925 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5927 isLine = SMESH_Algo::IsStraight( E );
5930 line = new Geom_Line( gp::OX() ); // only type does matter
5932 if ( !isLine && !isCirc && eos._edges.size() > 2) // Check if the EDGE is close to a circle
5937 else //////////////////////////////////////////////////////////////////////// 2D case
5939 if ( !eos._isRegularSWOL ) // 23190
5942 const TopoDS_Face& F = TopoDS::Face( eos._sWOL );
5944 // check if the EDGE is a line
5945 Handle(Geom2d_Curve) curve = BRep_Tool::CurveOnSurface( E, F, f, l );
5946 if ( curve->IsKind( STANDARD_TYPE( Geom2d_TrimmedCurve )))
5947 curve = Handle(Geom2d_TrimmedCurve)::DownCast( curve )->BasisCurve();
5949 Handle(Geom2d_Line) line2d = Handle(Geom2d_Line)::DownCast( curve );
5950 Handle(Geom2d_Circle) circle2d = Handle(Geom2d_Circle)::DownCast( curve );
5951 isLine = (!line2d.IsNull());
5952 isCirc = (!circle2d.IsNull());
5954 if ( !isLine && !isCirc ) // Check if the EDGE is close to a line
5957 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
5958 while ( nIt->more() )
5959 bndBox.Add( helper.GetNodeUV( F, nIt->next() ));
5960 gp_XY size = bndBox.CornerMax() - bndBox.CornerMin();
5962 const double lineTol = 1e-2 * sqrt( bndBox.SquareExtent() );
5963 for ( int i = 0; i < 2 && !isLine; ++i )
5964 isLine = ( size.Coord( i+1 ) <= lineTol );
5966 if ( !isLine && !isCirc && eos._edges.size() > 2 ) // Check if the EDGE is close to a circle
5972 line = new Geom_Line( gp::OX() ); // only type does matter
5976 gp_Pnt2d p = circle2d->Location();
5977 gp_Ax2 ax( gp_Pnt( p.X(), p.Y(), 0), gp::DX());
5978 circle = new Geom_Circle( ax, 1.); // only center position does matter
5987 return Handle(Geom_Curve)();
5990 //================================================================================
5992 * \brief Smooth edges on EDGE
5994 //================================================================================
5996 bool _Smoother1D::Perform(_SolidData& data,
5997 Handle(ShapeAnalysis_Surface)& surface,
5998 const TopoDS_Face& F,
5999 SMESH_MesherHelper& helper )
6001 if ( _leParams.empty() || ( !isAnalytic() && _offPoints.empty() ))
6004 findEdgesToSmooth();
6006 return smoothAnalyticEdge( data, surface, F, helper );
6008 return smoothComplexEdge ( data, surface, F, helper );
6011 //================================================================================
6013 * \brief Find edges to smooth
6015 //================================================================================
6017 void _Smoother1D::findEdgesToSmooth()
6019 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6020 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6021 if ( leOnV[iEnd]->Is( _LayerEdge::NORMAL_UPDATED ))
6022 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6024 _eToSmooth[0].first = _eToSmooth[0].second = 0;
6026 for ( size_t i = 0; i < _eos.size(); ++i )
6028 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6030 if ( needSmoothing( _leOnV[0]._cosin,
6031 _eos[i]->_len * leOnV[0]->_lenFactor, _curveLen * _leParams[i] ) ||
6034 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6038 _eToSmooth[0].second = i+1;
6041 _eToSmooth[1].first = _eToSmooth[1].second = _eos.size();
6043 for ( int i = _eos.size() - 1; i >= _eToSmooth[0].second; --i )
6045 if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH ))
6047 if ( needSmoothing( _leOnV[1]._cosin,
6048 _eos[i]->_len * leOnV[1]->_lenFactor, _curveLen * ( 1.-_leParams[i] )) ||
6050 _eos[i]->Set( _LayerEdge::TO_SMOOTH );
6054 _eToSmooth[1].first = i;
6058 //================================================================================
6060 * \brief Check if iE-th _LayerEdge needs smoothing
6062 //================================================================================
6064 bool _Smoother1D::isToSmooth( int iE )
6066 SMESH_NodeXYZ pi( _eos[iE]->_nodes[0] );
6067 SMESH_NodeXYZ p0( _eos[iE]->_2neibors->srcNode(0) );
6068 SMESH_NodeXYZ p1( _eos[iE]->_2neibors->srcNode(1) );
6069 gp_XYZ seg0 = pi - p0;
6070 gp_XYZ seg1 = p1 - pi;
6071 gp_XYZ tangent = seg0 + seg1;
6072 double tangentLen = tangent.Modulus();
6073 double segMinLen = Min( seg0.Modulus(), seg1.Modulus() );
6074 if ( tangentLen < std::numeric_limits<double>::min() )
6076 tangent /= tangentLen;
6078 for ( size_t i = 0; i < _eos[iE]->_neibors.size(); ++i )
6080 _LayerEdge* ne = _eos[iE]->_neibors[i];
6081 if ( !ne->Is( _LayerEdge::TO_SMOOTH ) ||
6082 ne->_nodes.size() < 2 ||
6083 ne->_nodes[0]->GetPosition()->GetDim() != 2 )
6085 gp_XYZ edgeVec = SMESH_NodeXYZ( ne->_nodes.back() ) - SMESH_NodeXYZ( ne->_nodes[0] );
6086 double proj = edgeVec * tangent;
6087 if ( needSmoothing( 1., proj, segMinLen ))
6093 //================================================================================
6095 * \brief smooth _LayerEdge's on a staight EDGE or circular EDGE
6097 //================================================================================
6099 bool _Smoother1D::smoothAnalyticEdge( _SolidData& data,
6100 Handle(ShapeAnalysis_Surface)& surface,
6101 const TopoDS_Face& F,
6102 SMESH_MesherHelper& helper)
6104 if ( !isAnalytic() ) return false;
6106 size_t iFrom = 0, iTo = _eos._edges.size();
6108 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Line )))
6110 if ( F.IsNull() ) // 3D
6112 SMESH_TNodeXYZ pSrc0( _eos._edges[iFrom]->_2neibors->srcNode(0) );
6113 SMESH_TNodeXYZ pSrc1( _eos._edges[iTo-1]->_2neibors->srcNode(1) );
6114 //const gp_XYZ lineDir = pSrc1 - pSrc0;
6115 //_LayerEdge* vLE0 = getLEdgeOnV( 0 );
6116 //_LayerEdge* vLE1 = getLEdgeOnV( 1 );
6117 // bool shiftOnly = ( vLE0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6118 // vLE0->Is( _LayerEdge::BLOCKED ) ||
6119 // vLE1->Is( _LayerEdge::NORMAL_UPDATED ) ||
6120 // vLE1->Is( _LayerEdge::BLOCKED ));
6121 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6123 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6124 if ( iFrom >= iTo ) continue;
6125 SMESH_TNodeXYZ p0( _eos[iFrom]->_2neibors->tgtNode(0) );
6126 SMESH_TNodeXYZ p1( _eos[iTo-1]->_2neibors->tgtNode(1) );
6127 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6128 double param1 = _leParams[ iTo ];
6129 for ( size_t i = iFrom; i < iTo; ++i )
6131 _LayerEdge* edge = _eos[i];
6132 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edge->_nodes.back() );
6133 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6134 gp_XYZ newPos = p0 * ( 1. - param ) + p1 * param;
6136 // if ( shiftOnly || edge->Is( _LayerEdge::NORMAL_UPDATED ))
6138 // gp_XYZ curPos = SMESH_TNodeXYZ ( tgtNode );
6139 // double shift = ( lineDir * ( newPos - pSrc0 ) -
6140 // lineDir * ( curPos - pSrc0 ));
6141 // newPos = curPos + lineDir * shift / lineDir.SquareModulus();
6143 if ( edge->Is( _LayerEdge::BLOCKED ))
6145 SMESH_TNodeXYZ pSrc( edge->_nodes[0] );
6146 double curThick = pSrc.SquareDistance( tgtNode );
6147 double newThink = ( pSrc - newPos ).SquareModulus();
6148 if ( newThink > curThick )
6151 edge->_pos.back() = newPos;
6152 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6153 dumpMove( tgtNode );
6159 _LayerEdge* eV0 = getLEdgeOnV( 0 );
6160 _LayerEdge* eV1 = getLEdgeOnV( 1 );
6161 gp_XY uvV0 = eV0->LastUV( F, *data.GetShapeEdges( eV0 ));
6162 gp_XY uvV1 = eV1->LastUV( F, *data.GetShapeEdges( eV1 ));
6163 if ( eV0->_nodes.back() == eV1->_nodes.back() ) // closed edge
6165 int iPeriodic = helper.GetPeriodicIndex();
6166 if ( iPeriodic == 1 || iPeriodic == 2 )
6168 uvV1.SetCoord( iPeriodic, helper.GetOtherParam( uvV1.Coord( iPeriodic )));
6169 if ( uvV0.Coord( iPeriodic ) > uvV1.Coord( iPeriodic ))
6170 std::swap( uvV0, uvV1 );
6173 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6175 iFrom = _eToSmooth[ iEnd ].first, iTo = _eToSmooth[ iEnd ].second;
6176 if ( iFrom >= iTo ) continue;
6177 _LayerEdge* e0 = _eos[iFrom]->_2neibors->_edges[0];
6178 _LayerEdge* e1 = _eos[iTo-1]->_2neibors->_edges[1];
6179 gp_XY uv0 = ( e0 == eV0 ) ? uvV0 : e0->LastUV( F, _eos );
6180 gp_XY uv1 = ( e1 == eV1 ) ? uvV1 : e1->LastUV( F, _eos );
6181 double param0 = ( iFrom == 0 ) ? 0. : _leParams[ iFrom-1 ];
6182 double param1 = _leParams[ iTo ];
6183 gp_XY rangeUV = uv1 - uv0;
6184 for ( size_t i = iFrom; i < iTo; ++i )
6186 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6187 double param = ( _leParams[i] - param0 ) / ( param1 - param0 );
6188 gp_XY newUV = uv0 + param * rangeUV;
6190 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6191 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6192 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6193 dumpMove( tgtNode );
6195 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
6196 pos->SetUParameter( newUV.X() );
6197 pos->SetVParameter( newUV.Y() );
6199 gp_XYZ newUV0( newUV.X(), newUV.Y(), 0 );
6201 if ( !_eos[i]->Is( _LayerEdge::SMOOTHED ))
6203 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6204 if ( _eos[i]->_pos.size() > 2 )
6206 // modify previous positions to make _LayerEdge less sharply bent
6207 vector<gp_XYZ>& uvVec = _eos[i]->_pos;
6208 const gp_XYZ uvShift = newUV0 - uvVec.back();
6209 const double len2 = ( uvVec.back() - uvVec[ 0 ] ).SquareModulus();
6210 int iPrev = uvVec.size() - 2;
6213 double r = ( uvVec[ iPrev ] - uvVec[0] ).SquareModulus() / len2;
6214 uvVec[ iPrev ] += uvShift * r;
6219 _eos[i]->_pos.back() = newUV0;
6226 if ( _anaCurve->IsKind( STANDARD_TYPE( Geom_Circle )))
6228 Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast( _anaCurve );
6229 gp_Pnt center3D = circle->Location();
6231 if ( F.IsNull() ) // 3D
6233 if ( getLEdgeOnV( 0 )->_nodes.back() == getLEdgeOnV( 1 )->_nodes.back() )
6234 return true; // closed EDGE - nothing to do
6236 // circle is a real curve of EDGE
6237 gp_Circ circ = circle->Circ();
6239 // new center is shifted along its axis
6240 const gp_Dir& axis = circ.Axis().Direction();
6241 _LayerEdge* e0 = getLEdgeOnV(0);
6242 _LayerEdge* e1 = getLEdgeOnV(1);
6243 SMESH_TNodeXYZ p0 = e0->_nodes.back();
6244 SMESH_TNodeXYZ p1 = e1->_nodes.back();
6245 double shift1 = axis.XYZ() * ( p0 - center3D.XYZ() );
6246 double shift2 = axis.XYZ() * ( p1 - center3D.XYZ() );
6247 gp_Pnt newCenter = center3D.XYZ() + axis.XYZ() * 0.5 * ( shift1 + shift2 );
6249 double newRadius = 0.5 * ( newCenter.Distance( p0 ) + newCenter.Distance( p1 ));
6251 gp_Ax2 newAxis( newCenter, axis, gp_Vec( newCenter, p0 ));
6252 gp_Circ newCirc( newAxis, newRadius );
6253 gp_Vec vecC1 ( newCenter, p1 );
6255 double uLast = newAxis.XDirection().AngleWithRef( vecC1, newAxis.Direction() ); // -PI - +PI
6259 for ( size_t i = 0; i < _eos.size(); ++i )
6261 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6262 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6263 double u = uLast * _leParams[i];
6264 gp_Pnt p = ElCLib::Value( u, newCirc );
6265 _eos._edges[i]->_pos.back() = p.XYZ();
6267 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6268 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6269 dumpMove( tgtNode );
6275 const gp_XY center( center3D.X(), center3D.Y() );
6277 _LayerEdge* e0 = getLEdgeOnV(0);
6278 _LayerEdge* eM = _eos._edges[ 0 ];
6279 _LayerEdge* e1 = getLEdgeOnV(1);
6280 gp_XY uv0 = e0->LastUV( F, *data.GetShapeEdges( e0 ) );
6281 gp_XY uvM = eM->LastUV( F, *data.GetShapeEdges( eM ) );
6282 gp_XY uv1 = e1->LastUV( F, *data.GetShapeEdges( e1 ) );
6283 gp_Vec2d vec0( center, uv0 );
6284 gp_Vec2d vecM( center, uvM );
6285 gp_Vec2d vec1( center, uv1 );
6286 double uLast = vec0.Angle( vec1 ); // -PI - +PI
6287 double uMidl = vec0.Angle( vecM );
6288 if ( uLast * uMidl <= 0. )
6289 uLast += ( uMidl > 0 ? +2. : -2. ) * M_PI;
6290 const double radius = 0.5 * ( vec0.Magnitude() + vec1.Magnitude() );
6292 gp_Ax2d axis( center, vec0 );
6293 gp_Circ2d circ( axis, radius );
6294 for ( size_t i = 0; i < _eos.size(); ++i )
6296 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6297 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6298 double newU = uLast * _leParams[i];
6299 gp_Pnt2d newUV = ElCLib::Value( newU, circ );
6300 _eos._edges[i]->_pos.back().SetCoord( newUV.X(), newUV.Y(), 0 );
6302 gp_Pnt newPos = surface->Value( newUV.X(), newUV.Y() );
6303 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos._edges[i]->_nodes.back() );
6304 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
6305 dumpMove( tgtNode );
6307 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
6308 pos->SetUParameter( newUV.X() );
6309 pos->SetVParameter( newUV.Y() );
6311 _eos[i]->Set( _LayerEdge::SMOOTHED ); // to check in refine() (IPAL54237)
6320 //================================================================================
6322 * \brief smooth _LayerEdge's on a an EDGE
6324 //================================================================================
6326 bool _Smoother1D::smoothComplexEdge( _SolidData& /*data*/,
6327 Handle(ShapeAnalysis_Surface)& surface,
6328 const TopoDS_Face& F,
6329 SMESH_MesherHelper& /*helper*/)
6331 if ( _offPoints.empty() )
6334 // ----------------------------------------------
6335 // move _offPoints along normals of _LayerEdge's
6336 // ----------------------------------------------
6338 _LayerEdge* e[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6339 if ( e[0]->Is( _LayerEdge::NORMAL_UPDATED ))
6340 _leOnV[0]._normal = getNormalNormal( e[0]->_normal, _edgeDir[0] );
6341 if ( e[1]->Is( _LayerEdge::NORMAL_UPDATED ))
6342 _leOnV[1]._normal = getNormalNormal( e[1]->_normal, _edgeDir[1] );
6343 _leOnV[0]._len = e[0]->_len;
6344 _leOnV[1]._len = e[1]->_len;
6345 for ( size_t i = 0; i < _offPoints.size(); i++ )
6347 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6348 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6349 const double w0 = _offPoints[i]._2edges._wgt[0];
6350 const double w1 = _offPoints[i]._2edges._wgt[1];
6351 gp_XYZ avgNorm = ( e0->_normal * w0 + e1->_normal * w1 ).Normalized();
6352 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6353 double avgFact = ( e0->_lenFactor * w0 + e1->_lenFactor * w1 );
6354 if ( e0->Is( _LayerEdge::NORMAL_UPDATED ) ||
6355 e1->Is( _LayerEdge::NORMAL_UPDATED ))
6356 avgNorm = getNormalNormal( avgNorm, _offPoints[i]._edgeDir );
6358 _offPoints[i]._xyz += avgNorm * ( avgLen - _offPoints[i]._len ) * avgFact;
6359 _offPoints[i]._len = avgLen;
6363 if ( !surface.IsNull() ) // project _offPoints to the FACE
6365 fTol = 100 * BRep_Tool::Tolerance( F );
6366 //const double segLen = _offPoints[0].Distance( _offPoints[1] );
6368 gp_Pnt2d uv = surface->ValueOfUV( _offPoints[0]._xyz, fTol );
6369 //if ( surface->Gap() < 0.5 * segLen )
6370 _offPoints[0]._xyz = surface->Value( uv ).XYZ();
6372 for ( size_t i = 1; i < _offPoints.size(); ++i )
6374 uv = surface->NextValueOfUV( uv, _offPoints[i]._xyz, fTol );
6375 //if ( surface->Gap() < 0.5 * segLen )
6376 _offPoints[i]._xyz = surface->Value( uv ).XYZ();
6380 // -----------------------------------------------------------------
6381 // project tgt nodes of extreme _LayerEdge's to the offset segments
6382 // -----------------------------------------------------------------
6384 const int updatedOrBlocked = _LayerEdge::NORMAL_UPDATED | _LayerEdge::BLOCKED;
6385 if ( e[0]->Is( updatedOrBlocked )) _iSeg[0] = 0;
6386 if ( e[1]->Is( updatedOrBlocked )) _iSeg[1] = _offPoints.size()-2;
6388 gp_Pnt pExtreme[2], pProj[2];
6389 bool isProjected[2];
6390 for ( int is2nd = 0; is2nd < 2; ++is2nd )
6392 pExtreme[ is2nd ] = SMESH_TNodeXYZ( e[is2nd]->_nodes.back() );
6393 int i = _iSeg[ is2nd ];
6394 int di = is2nd ? -1 : +1;
6395 bool & projected = isProjected[ is2nd ];
6397 double uOnSeg, distMin = Precision::Infinite(), dist, distPrev = 0;
6400 gp_Vec v0p( _offPoints[i]._xyz, pExtreme[ is2nd ] );
6401 gp_Vec v01( _offPoints[i]._xyz, _offPoints[i+1]._xyz );
6402 uOnSeg = ( v0p * v01 ) / v01.SquareMagnitude(); // param [0,1] along v01
6403 projected = ( Abs( uOnSeg - 0.5 ) <= 0.5 );
6404 dist = pExtreme[ is2nd ].SquareDistance( _offPoints[ i + ( uOnSeg > 0.5 )]._xyz );
6405 if ( dist < distMin || projected )
6408 pProj[ is2nd ] = _offPoints[i]._xyz + ( v01 * uOnSeg ).XYZ();
6411 else if ( dist > distPrev )
6413 if ( ++nbWorse > 3 ) // avoid projection to the middle of a closed EDGE
6419 while ( !projected &&
6420 i >= 0 && i+1 < (int)_offPoints.size() );
6424 if (( is2nd && _iSeg[1] != _offPoints.size()-2 ) || ( !is2nd && _iSeg[0] != 0 ))
6427 _iSeg[1] = _offPoints.size()-2;
6428 debugMsg( "smoothComplexEdge() failed to project nodes of extreme _LayerEdge's" );
6433 if ( _iSeg[0] > _iSeg[1] )
6435 debugMsg( "smoothComplexEdge() incorrectly projected nodes of extreme _LayerEdge's" );
6439 // adjust length of extreme LE (test viscous_layers_01/B7)
6440 gp_Vec vDiv0( pExtreme[0], pProj[0] );
6441 gp_Vec vDiv1( pExtreme[1], pProj[1] );
6442 double d0 = vDiv0.Magnitude();
6443 double d1 = isProjected[1] ? vDiv1.Magnitude() : 0;
6444 if ( e[0]->Is( _LayerEdge::BLOCKED )) {
6445 if ( e[0]->_normal * vDiv0.XYZ() < 0 ) e[0]->_len += d0;
6446 else e[0]->_len -= d0;
6448 if ( e[1]->Is( _LayerEdge::BLOCKED )) {
6449 if ( e[1]->_normal * vDiv1.XYZ() < 0 ) e[1]->_len += d1;
6450 else e[1]->_len -= d1;
6453 // ---------------------------------------------------------------------------------
6454 // compute normalized length of the offset segments located between the projections
6455 // ---------------------------------------------------------------------------------
6457 // temporary replace extreme _offPoints by pExtreme
6458 gp_XYZ opXYZ[2] = { _offPoints[ _iSeg[0] ]._xyz,
6459 _offPoints[ _iSeg[1]+1 ]._xyz };
6460 _offPoints[ _iSeg[0] ]._xyz = pExtreme[0].XYZ();
6461 _offPoints[ _iSeg[1]+ 1]._xyz = pExtreme[1].XYZ();
6463 size_t iSeg = 0, nbSeg = _iSeg[1] - _iSeg[0] + 1;
6464 vector< double > len( nbSeg + 1 );
6466 len[ iSeg++ ] = pProj[ 0 ].Distance( _offPoints[ _iSeg[0]+1 ]._xyz );
6467 for ( size_t i = _iSeg[0]+1; i <= _iSeg[1]; ++i, ++iSeg )
6469 len[ iSeg ] = len[ iSeg-1 ] + _offPoints[i].Distance( _offPoints[i+1] );
6471 // if ( isProjected[ 1 ])
6472 // len[ nbSeg ] -= pProj[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6474 // len[ nbSeg ] += pExtreme[ 1 ].Distance( _offPoints[ _iSeg[1]+1 ]._xyz );
6476 double fullLen = len.back() - d0 - d1;
6477 for ( iSeg = 0; iSeg < len.size(); ++iSeg )
6478 len[iSeg] = ( len[iSeg] - d0 ) / fullLen;
6480 // -------------------------------------------------------------
6481 // distribute tgt nodes of _LayerEdge's between the projections
6482 // -------------------------------------------------------------
6485 for ( size_t i = 0; i < _eos.size(); ++i )
6487 if ( _eos[i]->Is( _LayerEdge::BLOCKED )) continue;
6488 //if ( !_eos[i]->Is( _LayerEdge::TO_SMOOTH )) continue;
6489 while ( iSeg+2 < len.size() && _leParams[i] > len[ iSeg+1 ] )
6491 double r = ( _leParams[i] - len[ iSeg ]) / ( len[ iSeg+1 ] - len[ iSeg ]);
6492 gp_XYZ p = ( _offPoints[ iSeg + _iSeg[0] ]._xyz * ( 1 - r ) +
6493 _offPoints[ iSeg + _iSeg[0] + 1 ]._xyz * r );
6495 if ( surface.IsNull() )
6497 _eos[i]->_pos.back() = p;
6499 else // project a new node position to a FACE
6501 gp_Pnt2d uv ( _eos[i]->_pos.back().X(), _eos[i]->_pos.back().Y() );
6502 gp_Pnt2d uv2( surface->NextValueOfUV( uv, p, fTol ));
6504 p = surface->Value( uv2 ).XYZ();
6505 _eos[i]->_pos.back().SetCoord( uv2.X(), uv2.Y(), 0 );
6507 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _eos[i]->_nodes.back() );
6508 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
6509 dumpMove( tgtNode );
6512 _offPoints[ _iSeg[0] ]._xyz = opXYZ[0];
6513 _offPoints[ _iSeg[1]+1 ]._xyz = opXYZ[1];
6518 //================================================================================
6520 * \brief Prepare for smoothing
6522 //================================================================================
6524 void _Smoother1D::prepare(_SolidData& data)
6526 const TopoDS_Edge& E = TopoDS::Edge( _eos._shape );
6527 _curveLen = SMESH_Algo::EdgeLength( E );
6529 // sort _LayerEdge's by position on the EDGE
6530 data.SortOnEdge( E, _eos._edges );
6532 // compute normalized param of _eos._edges on EDGE
6533 _leParams.resize( _eos._edges.size() + 1 );
6536 gp_Pnt pPrev = SMESH_TNodeXYZ( getLEdgeOnV( 0 )->_nodes[0] );
6538 for ( size_t i = 0; i < _eos._edges.size(); ++i )
6540 gp_Pnt p = SMESH_TNodeXYZ( _eos._edges[i]->_nodes[0] );
6541 curLen = p.Distance( pPrev );
6542 _leParams[i+1] = _leParams[i] + curLen;
6545 double fullLen = _leParams.back() + pPrev.Distance( SMESH_TNodeXYZ( getLEdgeOnV(1)->_nodes[0]));
6546 for ( size_t i = 0; i < _leParams.size()-1; ++i )
6547 _leParams[i] = _leParams[i+1] / fullLen;
6548 _leParams.back() = 1.;
6551 _LayerEdge* leOnV[2] = { getLEdgeOnV(0), getLEdgeOnV(1) };
6553 // get cosin to use in findEdgesToSmooth()
6554 _edgeDir[0] = getEdgeDir( E, leOnV[0]->_nodes[0], data.GetHelper() );
6555 _edgeDir[1] = getEdgeDir( E, leOnV[1]->_nodes[0], data.GetHelper() );
6556 _leOnV[0]._cosin = Abs( leOnV[0]->_cosin );
6557 _leOnV[1]._cosin = Abs( leOnV[1]->_cosin );
6558 if ( _eos._sWOL.IsNull() ) // 3D
6559 for ( int iEnd = 0; iEnd < 2; ++iEnd )
6560 _leOnV[iEnd]._cosin = Abs( _edgeDir[iEnd].Normalized() * leOnV[iEnd]->_normal );
6565 // divide E to have offset segments with low deflection
6566 BRepAdaptor_Curve c3dAdaptor( E );
6567 const double curDeflect = 0.1; //0.01; // Curvature deflection == |p1p2|*sin(p1p2,p1pM)
6568 const double angDeflect = 0.1; //0.09; // Angular deflection == sin(p1pM,pMp2)
6569 GCPnts_TangentialDeflection discret(c3dAdaptor, angDeflect, curDeflect);
6570 if ( discret.NbPoints() <= 2 )
6572 _anaCurve = new Geom_Line( gp::OX() ); // only type does matter
6576 const double u0 = c3dAdaptor.FirstParameter();
6577 gp_Pnt p; gp_Vec tangent;
6578 if ( discret.NbPoints() >= (int) _eos.size() + 2 )
6580 _offPoints.resize( discret.NbPoints() );
6581 for ( size_t i = 0; i < _offPoints.size(); i++ )
6583 double u = discret.Parameter( i+1 );
6584 c3dAdaptor.D1( u, p, tangent );
6585 _offPoints[i]._xyz = p.XYZ();
6586 _offPoints[i]._edgeDir = tangent.XYZ();
6587 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6592 std::vector< double > params( _eos.size() + 2 );
6594 params[0] = data.GetHelper().GetNodeU( E, leOnV[0]->_nodes[0] );
6595 params.back() = data.GetHelper().GetNodeU( E, leOnV[1]->_nodes[0] );
6596 for ( size_t i = 0; i < _eos.size(); i++ )
6597 params[i+1] = data.GetHelper().GetNodeU( E, _eos[i]->_nodes[0] );
6599 if ( params[1] > params[ _eos.size() ] )
6600 std::reverse( params.begin() + 1, params.end() - 1 );
6602 _offPoints.resize( _eos.size() + 2 );
6603 for ( size_t i = 0; i < _offPoints.size(); i++ )
6605 const double u = params[i];
6606 c3dAdaptor.D1( u, p, tangent );
6607 _offPoints[i]._xyz = p.XYZ();
6608 _offPoints[i]._edgeDir = tangent.XYZ();
6609 _offPoints[i]._param = GCPnts_AbscissaPoint::Length( c3dAdaptor, u0, u ) / _curveLen;
6614 _offPoints [0]._2edges.set( &_leOnV[0], &_leOnV[0], 0.5, 0.5 );
6615 _offPoints.back()._2edges.set( &_leOnV[1], &_leOnV[1], 0.5, 0.5 );
6616 _2NearEdges tmp2edges;
6617 tmp2edges._edges[1] = _eos._edges[0];
6618 _leOnV[0]._2neibors = & tmp2edges;
6619 _leOnV[0]._nodes = leOnV[0]->_nodes;
6620 _leOnV[1]._nodes = leOnV[1]->_nodes;
6621 _LayerEdge* eNext, *ePrev = & _leOnV[0];
6622 for ( size_t iLE = 0, i = 1; i < _offPoints.size()-1; i++ )
6624 // find _LayerEdge's located before and after an offset point
6625 // (_eos._edges[ iLE ] is next after ePrev)
6626 while ( iLE < _eos._edges.size() && _offPoints[i]._param > _leParams[ iLE ] )
6627 ePrev = _eos._edges[ iLE++ ];
6628 eNext = ePrev->_2neibors->_edges[1];
6630 gp_Pnt p0 = SMESH_TNodeXYZ( ePrev->_nodes[0] );
6631 gp_Pnt p1 = SMESH_TNodeXYZ( eNext->_nodes[0] );
6632 double r = p0.Distance( _offPoints[i]._xyz ) / p0.Distance( p1 );
6633 _offPoints[i]._2edges.set( ePrev, eNext, 1-r, r );
6636 // replace _LayerEdge's on VERTEX by _leOnV in _offPoints._2edges
6637 for ( size_t i = 0; i < _offPoints.size(); i++ )
6638 if ( _offPoints[i]._2edges._edges[0] == leOnV[0] )
6639 _offPoints[i]._2edges._edges[0] = & _leOnV[0];
6641 for ( size_t i = _offPoints.size()-1; i > 0; i-- )
6642 if ( _offPoints[i]._2edges._edges[1] == leOnV[1] )
6643 _offPoints[i]._2edges._edges[1] = & _leOnV[1];
6646 // set _normal of _leOnV[0] and _leOnV[1] to be normal to the EDGE
6648 int iLBO = _offPoints.size() - 2; // last but one
6650 if ( leOnV[ 0 ]->Is( _LayerEdge::MULTI_NORMAL ))
6651 _leOnV[ 0 ]._normal = getNormalNormal( _eos._edges[1]->_normal, _edgeDir[0] );
6653 _leOnV[ 0 ]._normal = getNormalNormal( leOnV[0]->_normal, _edgeDir[0] );
6654 if ( leOnV[ 1 ]->Is( _LayerEdge::MULTI_NORMAL ))
6655 _leOnV[ 1 ]._normal = getNormalNormal( _eos._edges.back()->_normal, _edgeDir[1] );
6657 _leOnV[ 1 ]._normal = getNormalNormal( leOnV[1]->_normal, _edgeDir[1] );
6658 _leOnV[ 0 ]._len = 0;
6659 _leOnV[ 1 ]._len = 0;
6660 _leOnV[ 0 ]._lenFactor = _offPoints[1 ]._2edges._edges[1]->_lenFactor;
6661 _leOnV[ 1 ]._lenFactor = _offPoints[iLBO]._2edges._edges[0]->_lenFactor;
6664 _iSeg[1] = _offPoints.size()-2;
6666 // initialize OffPnt::_len
6667 for ( size_t i = 0; i < _offPoints.size(); ++i )
6668 _offPoints[i]._len = 0;
6670 if ( _eos._edges[0]->NbSteps() > 1 ) // already inflated several times, init _xyz
6672 _leOnV[0]._len = leOnV[0]->_len;
6673 _leOnV[1]._len = leOnV[1]->_len;
6674 for ( size_t i = 0; i < _offPoints.size(); i++ )
6676 _LayerEdge* e0 = _offPoints[i]._2edges._edges[0];
6677 _LayerEdge* e1 = _offPoints[i]._2edges._edges[1];
6678 const double w0 = _offPoints[i]._2edges._wgt[0];
6679 const double w1 = _offPoints[i]._2edges._wgt[1];
6680 double avgLen = ( e0->_len * w0 + e1->_len * w1 );
6681 gp_XYZ avgXYZ = ( SMESH_TNodeXYZ( e0->_nodes.back() ) * w0 +
6682 SMESH_TNodeXYZ( e1->_nodes.back() ) * w1 );
6683 _offPoints[i]._xyz = avgXYZ;
6684 _offPoints[i]._len = avgLen;
6689 //================================================================================
6691 * \brief return _normal of _leOnV[is2nd] normal to the EDGE
6693 //================================================================================
6695 gp_XYZ _Smoother1D::getNormalNormal( const gp_XYZ & normal,
6696 const gp_XYZ& edgeDir)
6698 gp_XYZ cross = normal ^ edgeDir;
6699 gp_XYZ norm = edgeDir ^ cross;
6700 double size = norm.Modulus();
6702 // if ( size == 0 ) // MULTI_NORMAL _LayerEdge
6703 // return gp_XYZ( 1e-100, 1e-100, 1e-100 );
6705 if ( size < 1e-5 ) // normal || edgeDir (almost) at inflation along EDGE (bos #20643)
6707 const _LayerEdge* le = _eos._edges[ _eos._edges.size() / 2 ];
6708 const gp_XYZ& leNorm = le->_normal;
6710 cross = leNorm ^ edgeDir;
6711 norm = edgeDir ^ cross;
6712 size = norm.Modulus();
6718 //================================================================================
6720 * \brief Writes a script creating a mesh composed of _offPoints
6722 //================================================================================
6724 void _Smoother1D::offPointsToPython() const
6726 const char* fname = "/tmp/offPoints.py";
6727 cout << "exec(open('"<<fname<<"','rb').read() )"<<endl;
6729 py << "import SMESH" << endl
6730 << "from salome.smesh import smeshBuilder" << endl
6731 << "smesh = smeshBuilder.New(salome.myStudy)" << endl
6732 << "mesh = smesh.Mesh( 'offPoints' )"<<endl;
6733 for ( size_t i = 0; i < _offPoints.size(); i++ )
6735 py << "mesh.AddNode( "
6736 << _offPoints[i]._xyz.X() << ", "
6737 << _offPoints[i]._xyz.Y() << ", "
6738 << _offPoints[i]._xyz.Z() << " )" << endl;
6742 //================================================================================
6744 * \brief Sort _LayerEdge's by a parameter on a given EDGE
6746 //================================================================================
6748 void _SolidData::SortOnEdge( const TopoDS_Edge& E,
6749 vector< _LayerEdge* >& edges)
6751 map< double, _LayerEdge* > u2edge;
6752 for ( size_t i = 0; i < edges.size(); ++i )
6753 u2edge.insert( u2edge.end(),
6754 make_pair( _helper->GetNodeU( E, edges[i]->_nodes[0] ), edges[i] ));
6756 ASSERT( u2edge.size() == edges.size() );
6757 map< double, _LayerEdge* >::iterator u2e = u2edge.begin();
6758 for ( size_t i = 0; i < edges.size(); ++i, ++u2e )
6759 edges[i] = u2e->second;
6761 Sort2NeiborsOnEdge( edges );
6764 //================================================================================
6766 * \brief Set _2neibors according to the order of _LayerEdge on EDGE
6768 //================================================================================
6770 void _SolidData::Sort2NeiborsOnEdge( vector< _LayerEdge* >& edges )
6772 if ( edges.size() < 2 || !edges[0]->_2neibors ) return;
6774 for ( size_t i = 0; i < edges.size()-1; ++i )
6775 if ( edges[i]->_2neibors->tgtNode(1) != edges[i+1]->_nodes.back() )
6776 edges[i]->_2neibors->reverse();
6778 const size_t iLast = edges.size() - 1;
6779 if ( edges.size() > 1 &&
6780 edges[iLast]->_2neibors->tgtNode(0) != edges[iLast-1]->_nodes.back() )
6781 edges[iLast]->_2neibors->reverse();
6784 //================================================================================
6786 * \brief Return _EdgesOnShape* corresponding to the shape
6788 //================================================================================
6790 _EdgesOnShape* _SolidData::GetShapeEdges(const TGeomID shapeID )
6792 if ( shapeID < (int)_edgesOnShape.size() &&
6793 _edgesOnShape[ shapeID ]._shapeID == shapeID )
6794 return _edgesOnShape[ shapeID ]._subMesh ? & _edgesOnShape[ shapeID ] : 0;
6796 for ( size_t i = 0; i < _edgesOnShape.size(); ++i )
6797 if ( _edgesOnShape[i]._shapeID == shapeID )
6798 return _edgesOnShape[i]._subMesh ? & _edgesOnShape[i] : 0;
6803 //================================================================================
6805 * \brief Return _EdgesOnShape* corresponding to the shape
6807 //================================================================================
6809 _EdgesOnShape* _SolidData::GetShapeEdges(const TopoDS_Shape& shape )
6811 SMESHDS_Mesh* meshDS = _proxyMesh->GetMesh()->GetMeshDS();
6812 return GetShapeEdges( meshDS->ShapeToIndex( shape ));
6815 //================================================================================
6817 * \brief Prepare data of the _LayerEdge for smoothing on FACE
6819 //================================================================================
6821 void _SolidData::PrepareEdgesToSmoothOnFace( _EdgesOnShape* eos, bool substituteSrcNodes )
6823 SMESH_MesherHelper helper( *_proxyMesh->GetMesh() );
6825 set< TGeomID > vertices;
6827 if ( eos->ShapeType() == TopAbs_FACE )
6829 // check FACE concavity and get concave VERTEXes
6830 F = TopoDS::Face( eos->_shape );
6831 if ( isConcave( F, helper, &vertices ))
6832 _concaveFaces.insert( eos->_shapeID );
6834 // set eos._eosConcaVer
6835 eos->_eosConcaVer.clear();
6836 eos->_eosConcaVer.reserve( vertices.size() );
6837 for ( set< TGeomID >::iterator v = vertices.begin(); v != vertices.end(); ++v )
6839 _EdgesOnShape* eov = GetShapeEdges( *v );
6840 if ( eov && eov->_edges.size() == 1 )
6842 eos->_eosConcaVer.push_back( eov );
6843 for ( size_t i = 0; i < eov->_edges[0]->_neibors.size(); ++i )
6844 eov->_edges[0]->_neibors[i]->Set( _LayerEdge::DIFFICULT );
6848 // SetSmooLen() to _LayerEdge's on FACE
6849 // for ( size_t i = 0; i < eos->_edges.size(); ++i )
6851 // eos->_edges[i]->SetSmooLen( Precision::Infinite() );
6853 // SMESH_subMeshIteratorPtr smIt = eos->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
6854 // while ( smIt->more() ) // loop on sub-shapes of the FACE
6856 // _EdgesOnShape* eoe = GetShapeEdges( smIt->next()->GetId() );
6857 // if ( !eoe ) continue;
6859 // vector<_LayerEdge*>& eE = eoe->_edges;
6860 // for ( size_t iE = 0; iE < eE.size(); ++iE ) // loop on _LayerEdge's on EDGE or VERTEX
6862 // if ( eE[iE]->_cosin <= theMinSmoothCosin )
6865 // SMDS_ElemIteratorPtr segIt = eE[iE]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
6866 // while ( segIt->more() )
6868 // const SMDS_MeshElement* seg = segIt->next();
6869 // if ( !eos->_subMesh->DependsOn( seg->getshapeId() ))
6871 // if ( seg->GetNode(0) != eE[iE]->_nodes[0] )
6872 // continue; // not to check a seg twice
6873 // for ( size_t iN = 0; iN < eE[iE]->_neibors.size(); ++iN )
6875 // _LayerEdge* eN = eE[iE]->_neibors[iN];
6876 // if ( eN->_nodes[0]->getshapeId() != eos->_shapeID )
6878 // double dist = SMESH_MeshAlgos::GetDistance( seg, SMESH_TNodeXYZ( eN->_nodes[0] ));
6879 // double smooLen = getSmoothingThickness( eE[iE]->_cosin, dist );
6880 // eN->SetSmooLen( Min( smooLen, eN->GetSmooLen() ));
6881 // eN->Set( _LayerEdge::NEAR_BOUNDARY );
6886 } // if ( eos->ShapeType() == TopAbs_FACE )
6888 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6890 eos->_edges[i]->_smooFunction = 0;
6891 eos->_edges[i]->Set( _LayerEdge::TO_SMOOTH );
6893 bool isCurved = false;
6894 for ( size_t i = 0; i < eos->_edges.size(); ++i )
6896 _LayerEdge* edge = eos->_edges[i];
6898 // get simplices sorted
6899 _Simplex::SortSimplices( edge->_simplices );
6901 // smoothing function
6902 edge->ChooseSmooFunction( vertices, _n2eMap );
6905 double avgNormProj = 0, avgLen = 0;
6906 for ( size_t iS = 0; iS < edge->_simplices.size(); ++iS )
6908 _Simplex& s = edge->_simplices[iS];
6910 gp_XYZ vec = edge->_pos.back() - SMESH_TNodeXYZ( s._nPrev );
6911 avgNormProj += edge->_normal * vec;
6912 avgLen += vec.Modulus();
6913 if ( substituteSrcNodes )
6915 s._nNext = _n2eMap[ s._nNext ]->_nodes.back();
6916 s._nPrev = _n2eMap[ s._nPrev ]->_nodes.back();
6919 avgNormProj /= edge->_simplices.size();
6920 avgLen /= edge->_simplices.size();
6921 if (( edge->_curvature = _Curvature::New( avgNormProj, avgLen )))
6923 edge->Set( _LayerEdge::SMOOTHED_C1 );
6925 SMDS_FacePositionPtr fPos = edge->_nodes[0]->GetPosition();
6927 for ( size_t iS = 0; iS < edge->_simplices.size() && !fPos; ++iS )
6928 fPos = edge->_simplices[iS]._nPrev->GetPosition();
6930 edge->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
6934 // prepare for putOnOffsetSurface()
6935 if (( eos->ShapeType() == TopAbs_FACE ) &&
6936 ( isCurved || !eos->_eosConcaVer.empty() ))
6938 eos->_offsetSurf = helper.GetSurface( TopoDS::Face( eos->_shape ));
6939 eos->_edgeForOffset = 0;
6941 double maxCosin = -1;
6942 bool hasNoShrink = false;
6943 for ( TopExp_Explorer eExp( eos->_shape, TopAbs_EDGE ); eExp.More(); eExp.Next() )
6945 _EdgesOnShape* eoe = GetShapeEdges( eExp.Current() );
6946 if ( !eoe || eoe->_edges.empty() ) continue;
6948 if ( eos->GetData()._noShrinkShapes.count( eoe->_shapeID ))
6951 vector<_LayerEdge*>& eE = eoe->_edges;
6952 _LayerEdge* e = eE[ eE.size() / 2 ];
6953 if ( !e->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > maxCosin )
6955 eos->_edgeForOffset = e;
6956 maxCosin = e->_cosin;
6959 if ( !eoe->_sWOL.IsNull() )
6960 for ( _LayerEdge* le : eoe->_edges )
6961 if ( le->Is( _LayerEdge::RISKY_SWOL ) && e->_cosin > 0 )
6963 // make _neibors on FACE be smoothed after le->Is( BLOCKED )
6964 for ( _LayerEdge* neibor : le->_neibors )
6966 int shapeDim = neibor->BaseShapeDim();
6967 if ( shapeDim == 2 )
6968 neibor->Set( _LayerEdge::NEAR_BOUNDARY ); // on FACE
6969 else if ( shapeDim == 0 )
6970 neibor->Set( _LayerEdge::RISKY_SWOL ); // on VERTEX
6972 if ( !neibor->_curvature )
6974 gp_XY uv = helper.GetNodeUV( F, neibor->_nodes[0] );
6975 neibor->_curvature = _Factory::NewCurvature();
6976 neibor->_curvature->_r = 0;
6977 neibor->_curvature->_k = 0;
6978 neibor->_curvature->_h2lenRatio = 0;
6979 neibor->_curvature->_uv = uv;
6985 // Try to initialize _Mapper2D
6990 SMDS_ElemIteratorPtr fIt = eos->_subMesh->GetSubMeshDS()->GetElements();
6991 if ( !fIt->more() || fIt->next()->NbCornerNodes() != 4 )
6994 // get EDGEs of quadrangle bottom
6995 std::list< TopoDS_Edge > edges;
6996 std::list< int > nbEdgesInWire;
6997 int nbWire = SMESH_Block::GetOrderedEdges( F, edges, nbEdgesInWire );
6998 if ( nbWire != 1 || nbEdgesInWire.front() < 4 )
7000 const SMDS_MeshNode* node;
7001 while ( true ) // make edges start at a corner VERTEX
7003 node = SMESH_Algo::VertexNode( helper.IthVertex( 0, edges.front() ), helper.GetMeshDS() );
7004 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7007 if ( edges.empty() )
7010 std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
7011 while ( true ) // make edges finish at a corner VERTEX
7013 node = SMESH_Algo::VertexNode( helper.IthVertex( 1, *edgeIt ), helper.GetMeshDS() );
7015 if ( node && helper.IsCornerOfStructure( node, eos->_subMesh->GetSubMeshDS(), helper ))
7017 edges.erase( edgeIt, edges.end() );
7020 if ( edgeIt == edges.end() )
7024 // get structure of nodes
7025 TParam2ColumnMap param2ColumnMap;
7026 if ( !helper.LoadNodeColumns( param2ColumnMap, F, edges, helper.GetMeshDS() ))
7029 eos->_mapper2D = new _Mapper2D( param2ColumnMap, eos->GetData()._n2eMap );
7031 } // if eos is of curved FACE
7036 //================================================================================
7038 * \brief Add faces for smoothing
7040 //================================================================================
7042 void _SolidData::AddShapesToSmooth( const set< _EdgesOnShape* >& eosToSmooth,
7043 const set< _EdgesOnShape* >* edgesNoAnaSmooth )
7045 set< _EdgesOnShape * >::const_iterator eos = eosToSmooth.begin();
7046 for ( ; eos != eosToSmooth.end(); ++eos )
7048 if ( !*eos || (*eos)->_toSmooth ) continue;
7050 (*eos)->_toSmooth = true;
7052 if ( (*eos)->ShapeType() == TopAbs_FACE )
7054 PrepareEdgesToSmoothOnFace( *eos, /*substituteSrcNodes=*/false );
7055 (*eos)->_toSmooth = true;
7059 // avoid _Smoother1D::smoothAnalyticEdge() of edgesNoAnaSmooth
7060 if ( edgesNoAnaSmooth )
7061 for ( eos = edgesNoAnaSmooth->begin(); eos != edgesNoAnaSmooth->end(); ++eos )
7063 if ( (*eos)->_edgeSmoother )
7064 (*eos)->_edgeSmoother->_anaCurve.Nullify();
7068 //================================================================================
7070 * \brief Limit _LayerEdge::_maxLen according to local curvature
7072 //================================================================================
7074 void _ViscousBuilder::limitMaxLenByCurvature( _SolidData& data, SMESH_MesherHelper& /*helper*/ )
7076 // find intersection of neighbor _LayerEdge's to limit _maxLen
7077 // according to local curvature (IPAL52648)
7079 // This method must be called after findCollisionEdges() where _LayerEdge's
7080 // get _lenFactor initialized in the case of eos._hyp.IsOffsetMethod()
7082 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7084 _EdgesOnShape& eosI = data._edgesOnShape[iS];
7085 if ( eosI._edges.empty() ) continue;
7086 if ( !eosI._hyp.ToSmooth() )
7088 for ( size_t i = 0; i < eosI._edges.size(); ++i )
7090 _LayerEdge* eI = eosI._edges[i];
7091 for ( size_t iN = 0; iN < eI->_neibors.size(); ++iN )
7093 _LayerEdge* eN = eI->_neibors[iN];
7094 if ( eI->_nodes[0]->GetID() < eN->_nodes[0]->GetID() ) // treat this pair once
7096 _EdgesOnShape* eosN = data.GetShapeEdges( eN );
7097 limitMaxLenByCurvature( eI, eN, eosI, *eosN, eosI._hyp.ToSmooth() );
7102 else if ( eosI.ShapeType() == TopAbs_EDGE )
7104 const TopoDS_Edge& E = TopoDS::Edge( eosI._shape );
7105 if ( SMESH_Algo::IsStraight( E, /*degenResult=*/true )) continue;
7107 _LayerEdge* e0 = eosI._edges[0];
7108 for ( size_t i = 1; i < eosI._edges.size(); ++i )
7110 _LayerEdge* eI = eosI._edges[i];
7111 limitMaxLenByCurvature( eI, e0, eosI, eosI, eosI._hyp.ToSmooth() );
7118 //================================================================================
7120 * \brief Limit _LayerEdge::_maxLen according to local curvature
7122 //================================================================================
7124 void _ViscousBuilder::limitMaxLenByCurvature( _LayerEdge* e1,
7126 _EdgesOnShape& /*eos1*/,
7127 _EdgesOnShape& /*eos2*/,
7128 const bool /*isSmoothable*/ )
7130 if (( e1->_nodes[0]->GetPosition()->GetDim() !=
7131 e2->_nodes[0]->GetPosition()->GetDim() ) &&
7132 ( e1->_cosin < 0.75 ))
7133 return; // angle > 90 deg at e1
7135 gp_XYZ plnNorm = e1->_normal ^ e2->_normal;
7136 double norSize = plnNorm.SquareModulus();
7137 if ( norSize < std::numeric_limits<double>::min() )
7138 return; // parallel normals
7140 // find closest points of skew _LayerEdge's
7141 SMESH_TNodeXYZ src1( e1->_nodes[0] ), src2( e2->_nodes[0] );
7142 gp_XYZ dir12 = src2 - src1;
7143 gp_XYZ perp1 = e1->_normal ^ plnNorm;
7144 gp_XYZ perp2 = e2->_normal ^ plnNorm;
7145 double dot1 = perp2 * e1->_normal;
7146 double dot2 = perp1 * e2->_normal;
7147 double u1 = ( perp2 * dir12 ) / dot1;
7148 double u2 = - ( perp1 * dir12 ) / dot2;
7149 if ( u1 > 0 && u2 > 0 )
7151 double ovl = ( u1 * e1->_normal * dir12 -
7152 u2 * e2->_normal * dir12 ) / dir12.SquareModulus();
7153 if ( ovl > theSmoothThickToElemSizeRatio )
7155 const double coef = 0.75;
7156 e1->SetMaxLen( Min( e1->_maxLen, coef * u1 / e1->_lenFactor ));
7157 e2->SetMaxLen( Min( e2->_maxLen, coef * u2 / e2->_lenFactor ));
7162 //================================================================================
7164 * \brief Fill data._collisionEdges
7166 //================================================================================
7168 void _ViscousBuilder::findCollisionEdges( _SolidData& data, SMESH_MesherHelper& helper )
7170 data._collisionEdges.clear();
7172 // set the full thickness of the layers to LEs
7173 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7175 _EdgesOnShape& eos = data._edgesOnShape[iS];
7176 if ( eos._edges.empty() ) continue;
7177 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7178 if ( !eos._sWOL.IsNull() ) continue; // PAL23566
7180 for ( size_t i = 0; i < eos._edges.size(); ++i )
7182 if ( eos._edges[i]->Is( _LayerEdge::BLOCKED )) continue;
7183 double maxLen = eos._edges[i]->_maxLen;
7184 eos._edges[i]->_maxLen = Precision::Infinite(); // avoid blocking
7185 eos._edges[i]->SetNewLength( 1.5 * maxLen, eos, helper );
7186 eos._edges[i]->_maxLen = maxLen;
7190 // make temporary quadrangles got by extrusion of
7191 // mesh edges along _LayerEdge._normal's
7193 vector< const SMDS_MeshElement* > tmpFaces;
7195 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7197 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7198 if ( eos.ShapeType() != TopAbs_EDGE )
7200 if ( eos._edges.empty() )
7202 _LayerEdge* edge[2] = { 0, 0 }; // LE of 2 VERTEX'es
7203 SMESH_subMeshIteratorPtr smIt = eos._subMesh->getDependsOnIterator(/*includeSelf=*/false);
7204 while ( smIt->more() )
7205 if ( _EdgesOnShape* eov = data.GetShapeEdges( smIt->next()->GetId() ))
7206 if ( eov->_edges.size() == 1 )
7207 edge[ bool( edge[0]) ] = eov->_edges[0];
7211 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge[0], edge[1], --_tmpFaceID );
7212 tmpFaces.push_back( f );
7215 for ( size_t i = 0; i < eos._edges.size(); ++i )
7217 _LayerEdge* edge = eos._edges[i];
7218 for ( int j = 0; j < 2; ++j ) // loop on _2NearEdges
7220 const SMDS_MeshNode* src2 = edge->_2neibors->srcNode(j);
7221 if ( src2->GetPosition()->GetDim() > 0 &&
7222 src2->GetID() < edge->_nodes[0]->GetID() )
7223 continue; // avoid using same segment twice
7225 // a _LayerEdge containing tgt2
7226 _LayerEdge* neiborEdge = edge->_2neibors->_edges[j];
7228 _TmpMeshFaceOnEdge* f = new _TmpMeshFaceOnEdge( edge, neiborEdge, --_tmpFaceID );
7229 tmpFaces.push_back( f );
7234 // Find _LayerEdge's intersecting tmpFaces.
7236 SMDS_ElemIteratorPtr fIt( new SMDS_ElementVectorIterator( tmpFaces.begin(),
7238 SMESHUtils::Deleter<SMESH_ElementSearcher> searcher
7239 ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(), fIt ));
7241 double dist1, dist2, segLen, eps = 0.5;
7242 _CollisionEdges collEdges;
7243 vector< const SMDS_MeshElement* > suspectFaces;
7244 const double angle45 = Cos( 45. * M_PI / 180. );
7246 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7248 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7249 if ( eos.ShapeType() == TopAbs_FACE || !eos._sWOL.IsNull() )
7251 // find sub-shapes whose VL can influence VL on eos
7252 set< TGeomID > neighborShapes;
7253 PShapeIteratorPtr fIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_FACE );
7254 while ( const TopoDS_Shape* face = fIt->next() )
7256 TGeomID faceID = getMeshDS()->ShapeToIndex( *face );
7257 if ( _EdgesOnShape* eof = data.GetShapeEdges( faceID ))
7259 SMESH_subMeshIteratorPtr subIt = eof->_subMesh->getDependsOnIterator(/*includeSelf=*/false);
7260 while ( subIt->more() )
7261 neighborShapes.insert( subIt->next()->GetId() );
7264 if ( eos.ShapeType() == TopAbs_VERTEX )
7266 PShapeIteratorPtr eIt = helper.GetAncestors( eos._shape, *_mesh, TopAbs_EDGE );
7267 while ( const TopoDS_Shape* edge = eIt->next() )
7268 neighborShapes.erase( getMeshDS()->ShapeToIndex( *edge ));
7270 // find intersecting _LayerEdge's
7271 for ( size_t i = 0; i < eos._edges.size(); ++i )
7273 if ( eos._edges[i]->Is( _LayerEdge::MULTI_NORMAL )) continue;
7274 _LayerEdge* edge = eos._edges[i];
7275 gp_Ax1 lastSegment = edge->LastSegment( segLen, eos );
7278 gp_Vec eSegDir0, eSegDir1;
7279 if ( edge->IsOnEdge() )
7281 SMESH_TNodeXYZ eP( edge->_nodes[0] );
7282 eSegDir0 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(0) ) - eP;
7283 eSegDir1 = SMESH_TNodeXYZ( edge->_2neibors->srcNode(1) ) - eP;
7285 suspectFaces.clear();
7286 searcher->GetElementsInSphere( SMESH_TNodeXYZ( edge->_nodes.back()), edge->_len * 2,
7287 SMDSAbs_Face, suspectFaces );
7288 collEdges._intEdges.clear();
7289 for ( size_t j = 0 ; j < suspectFaces.size(); ++j )
7291 const _TmpMeshFaceOnEdge* f = (const _TmpMeshFaceOnEdge*) suspectFaces[j];
7292 if ( f->_le1 == edge || f->_le2 == edge ) continue;
7293 if ( !neighborShapes.count( f->_le1->_nodes[0]->getshapeId() )) continue;
7294 if ( !neighborShapes.count( f->_le2->_nodes[0]->getshapeId() )) continue;
7295 if ( edge->IsOnEdge() ) {
7296 if ( edge->_2neibors->include( f->_le1 ) ||
7297 edge->_2neibors->include( f->_le2 )) continue;
7300 if (( f->_le1->IsOnEdge() && f->_le1->_2neibors->include( edge )) ||
7301 ( f->_le2->IsOnEdge() && f->_le2->_2neibors->include( edge ))) continue;
7303 dist1 = dist2 = Precision::Infinite();
7304 if ( !edge->SegTriaInter( lastSegment, f->n(0), f->n(1), f->n(2), dist1, eps ))
7305 dist1 = Precision::Infinite();
7306 if ( !edge->SegTriaInter( lastSegment, f->n(3), f->n(2), f->n(0), dist2, eps ))
7307 dist2 = Precision::Infinite();
7308 if (( dist1 > segLen ) && ( dist2 > segLen ))
7311 if ( edge->IsOnEdge() )
7313 // skip perpendicular EDGEs
7314 gp_Vec fSegDir = SMESH_TNodeXYZ( f->n(0) ) - SMESH_TNodeXYZ( f->n(3) );
7315 bool isParallel = ( isLessAngle( eSegDir0, fSegDir, angle45 ) ||
7316 isLessAngle( eSegDir1, fSegDir, angle45 ) ||
7317 isLessAngle( eSegDir0, fSegDir.Reversed(), angle45 ) ||
7318 isLessAngle( eSegDir1, fSegDir.Reversed(), angle45 ));
7323 // either limit inflation of edges or remember them for updating _normal
7324 // double dot = edge->_normal * f->GetDir();
7327 collEdges._intEdges.push_back( f->_le1 );
7328 collEdges._intEdges.push_back( f->_le2 );
7332 // double shortLen = 0.75 * ( Min( dist1, dist2 ) / edge->_lenFactor );
7333 // edge->SetMaxLen( Min( shortLen, edge->_maxLen ));
7337 if ( !collEdges._intEdges.empty() )
7339 collEdges._edge = edge;
7340 data._collisionEdges.push_back( collEdges );
7345 for ( size_t i = 0 ; i < tmpFaces.size(); ++i )
7348 // restore the zero thickness
7349 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7351 _EdgesOnShape& eos = data._edgesOnShape[iS];
7352 if ( eos._edges.empty() ) continue;
7353 if ( eos.ShapeType() != TopAbs_EDGE && eos.ShapeType() != TopAbs_VERTEX ) continue;
7355 for ( size_t i = 0; i < eos._edges.size(); ++i )
7357 eos._edges[i]->InvalidateStep( 1, eos );
7358 eos._edges[i]->_len = 0;
7363 //================================================================================
7365 * \brief Find _LayerEdge's located on boundary of a convex FACE whose normal
7366 * will be updated at each inflation step
7368 //================================================================================
7370 void _ViscousBuilder::findEdgesToUpdateNormalNearConvexFace( _ConvexFace & convFace,
7372 SMESH_MesherHelper& helper )
7374 const TGeomID convFaceID = getMeshDS()->ShapeToIndex( convFace._face );
7375 const double preci = BRep_Tool::Tolerance( convFace._face );
7376 Handle(ShapeAnalysis_Surface) surface = helper.GetSurface( convFace._face );
7378 bool edgesToUpdateFound = false;
7380 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7381 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7383 _EdgesOnShape& eos = * id2eos->second;
7384 if ( !eos._sWOL.IsNull() ) continue;
7385 if ( !eos._hyp.ToSmooth() ) continue;
7386 for ( size_t i = 0; i < eos._edges.size(); ++i )
7388 _LayerEdge* ledge = eos._edges[ i ];
7389 if ( ledge->Is( _LayerEdge::UPD_NORMAL_CONV )) continue; // already checked
7390 if ( ledge->Is( _LayerEdge::MULTI_NORMAL )) continue; // not inflatable
7392 gp_XYZ tgtPos = ( SMESH_NodeXYZ( ledge->_nodes[0] ) +
7393 ledge->_normal * ledge->_lenFactor * ledge->_maxLen );
7395 // the normal must be updated if distance from tgtPos to surface is less than
7398 // find an initial UV for search of a projection of tgtPos to surface
7399 const SMDS_MeshNode* nodeInFace = 0;
7400 SMDS_ElemIteratorPtr fIt = ledge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7401 while ( fIt->more() && !nodeInFace )
7403 const SMDS_MeshElement* f = fIt->next();
7404 if ( convFaceID != f->getshapeId() ) continue;
7406 SMDS_ElemIteratorPtr nIt = f->nodesIterator();
7407 while ( nIt->more() && !nodeInFace )
7409 const SMDS_MeshElement* n = nIt->next();
7410 if ( n->getshapeId() == convFaceID )
7411 nodeInFace = static_cast< const SMDS_MeshNode* >( n );
7416 gp_XY uv = helper.GetNodeUV( convFace._face, nodeInFace );
7419 surface->NextValueOfUV( uv, tgtPos, preci );
7420 double dist = surface->Gap();
7421 if ( dist < 0.95 * ledge->_maxLen )
7423 ledge->Set( _LayerEdge::UPD_NORMAL_CONV );
7424 if ( !ledge->_curvature ) ledge->_curvature = _Factory::NewCurvature();
7425 ledge->_curvature->_uv.SetCoord( uv.X(), uv.Y() );
7426 edgesToUpdateFound = true;
7431 if ( !convFace._isTooCurved && edgesToUpdateFound )
7433 data._convexFaces.insert( make_pair( convFaceID, convFace )).first->second;
7437 //================================================================================
7439 * \brief Modify normals of _LayerEdge's on EDGE's to avoid intersection with
7440 * _LayerEdge's on neighbor EDGE's
7442 //================================================================================
7444 bool _ViscousBuilder::updateNormals( _SolidData& data,
7445 SMESH_MesherHelper& helper,
7447 double /*stepSize*/)
7449 updateNormalsOfC1Vertices( data );
7451 if ( stepNb > 0 && !updateNormalsOfConvexFaces( data, helper, stepNb ))
7454 // map to store new _normal and _cosin for each intersected edge
7455 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp > edge2newEdge;
7456 map< _LayerEdge*, _LayerEdge, _LayerEdgeCmp >::iterator e2neIt;
7457 _LayerEdge zeroEdge;
7458 zeroEdge._normal.SetCoord( 0,0,0 );
7459 zeroEdge._maxLen = Precision::Infinite();
7460 zeroEdge._nodes.resize(1); // to init _TmpMeshFaceOnEdge
7462 set< _EdgesOnShape* > shapesToSmooth, edgesNoAnaSmooth;
7464 double segLen, dist1, dist2, dist;
7465 vector< pair< _LayerEdge*, double > > intEdgesDist;
7466 _TmpMeshFaceOnEdge quad( &zeroEdge, &zeroEdge, 0 );
7468 for ( int iter = 0; iter < 5; ++iter )
7470 edge2newEdge.clear();
7472 for ( size_t iE = 0; iE < data._collisionEdges.size(); ++iE )
7474 _CollisionEdges& ce = data._collisionEdges[iE];
7475 _LayerEdge* edge1 = ce._edge;
7476 if ( !edge1 /*|| edge1->Is( _LayerEdge::BLOCKED )*/) continue;
7477 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7478 if ( !eos1 ) continue;
7480 // detect intersections
7481 gp_Ax1 lastSeg = edge1->LastSegment( segLen, *eos1 );
7482 double testLen = 1.5 * edge1->_maxLen * edge1->_lenFactor;
7484 intEdgesDist.clear();
7485 double minIntDist = Precision::Infinite();
7486 for ( size_t i = 0; i < ce._intEdges.size(); i += 2 )
7488 if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7489 ce._intEdges[i ]->Is( _LayerEdge::BLOCKED ) &&
7490 ce._intEdges[i+1]->Is( _LayerEdge::BLOCKED ))
7492 double dot = edge1->_normal * quad.GetDir( ce._intEdges[i], ce._intEdges[i+1] );
7493 double fact = ( 1.1 + dot * dot );
7494 SMESH_TNodeXYZ pSrc0( ce.nSrc(i) ), pSrc1( ce.nSrc(i+1) );
7495 SMESH_TNodeXYZ pTgt0( ce.nTgt(i) ), pTgt1( ce.nTgt(i+1) );
7496 gp_XYZ pLast0 = pSrc0 + ( pTgt0 - pSrc0 ) * fact;
7497 gp_XYZ pLast1 = pSrc1 + ( pTgt1 - pSrc1 ) * fact;
7498 dist1 = dist2 = Precision::Infinite();
7499 if ( !edge1->SegTriaInter( lastSeg, pSrc0, pLast0, pSrc1, dist1, eps ) &&
7500 !edge1->SegTriaInter( lastSeg, pSrc1, pLast1, pLast0, dist2, eps ))
7503 if ( dist > testLen || dist <= 0 )
7506 if ( dist > testLen || dist <= 0 )
7509 // choose a closest edge
7510 gp_Pnt intP( lastSeg.Location().XYZ() + lastSeg.Direction().XYZ() * ( dist + segLen ));
7511 double d1 = intP.SquareDistance( pSrc0 );
7512 double d2 = intP.SquareDistance( pSrc1 );
7513 int iClose = i + ( d2 < d1 );
7514 _LayerEdge* edge2 = ce._intEdges[iClose];
7515 edge2->Unset( _LayerEdge::MARKED );
7517 // choose a closest edge among neighbors
7518 gp_Pnt srcP( SMESH_TNodeXYZ( edge1->_nodes[0] ));
7519 d1 = srcP.SquareDistance( SMESH_TNodeXYZ( edge2->_nodes[0] ));
7520 for ( size_t j = 0; j < intEdgesDist.size(); ++j )
7522 _LayerEdge * edgeJ = intEdgesDist[j].first;
7523 if ( edge2->IsNeiborOnEdge( edgeJ ))
7525 d2 = srcP.SquareDistance( SMESH_TNodeXYZ( edgeJ->_nodes[0] ));
7526 ( d1 < d2 ? edgeJ : edge2 )->Set( _LayerEdge::MARKED );
7529 intEdgesDist.push_back( make_pair( edge2, dist ));
7530 // if ( Abs( d2 - d1 ) / Max( d2, d1 ) < 0.5 )
7532 // iClose = i + !( d2 < d1 );
7533 // intEdges.push_back( ce._intEdges[iClose] );
7534 // ce._intEdges[iClose]->Unset( _LayerEdge::MARKED );
7536 minIntDist = Min( edge1->_len * edge1->_lenFactor - segLen + dist, minIntDist );
7541 // compute new _normals
7542 for ( size_t i = 0; i < intEdgesDist.size(); ++i )
7544 _LayerEdge* edge2 = intEdgesDist[i].first;
7545 double distWgt = edge1->_len / intEdgesDist[i].second;
7546 // if ( edge1->Is( _LayerEdge::BLOCKED ) &&
7547 // edge2->Is( _LayerEdge::BLOCKED )) continue;
7548 if ( edge2->Is( _LayerEdge::MARKED )) continue;
7549 edge2->Set( _LayerEdge::MARKED );
7552 gp_XYZ dir1 = edge1->_normal, dir2 = edge2->_normal;
7554 double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7555 double wgt1 = ( cos1 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7556 double wgt2 = ( cos2 + 0.001 ) / ( cos1 + cos2 + 0.002 );
7557 // double cos1 = Abs( edge1->_cosin ), cos2 = Abs( edge2->_cosin );
7558 // double sgn1 = 0.1 * ( 1 + edge1->_cosin ), sgn2 = 0.1 * ( 1 + edge2->_cosin );
7559 // double wgt1 = ( cos1 + sgn1 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7560 // double wgt2 = ( cos2 + sgn2 ) / ( cos1 + cos2 + sgn1 + sgn2 );
7561 gp_XYZ newNormal = wgt1 * dir1 + wgt2 * dir2;
7562 newNormal.Normalize();
7566 double sgn1 = edge1->_cosin / cos1, sgn2 = edge2->_cosin / cos2;
7567 if ( cos1 < theMinSmoothCosin )
7569 newCos = cos2 * sgn1;
7571 else if ( cos2 > theMinSmoothCosin ) // both cos1 and cos2 > theMinSmoothCosin
7573 newCos = ( wgt1 * cos1 + wgt2 * cos2 ) * edge1->_cosin / cos1;
7577 newCos = edge1->_cosin;
7580 e2neIt = edge2newEdge.insert( make_pair( edge1, zeroEdge )).first;
7581 e2neIt->second._normal += distWgt * newNormal;
7582 e2neIt->second._cosin = newCos;
7583 e2neIt->second.SetMaxLen( 0.7 * minIntDist / edge1->_lenFactor );
7584 if ( iter > 0 && sgn1 * sgn2 < 0 && edge1->_cosin < 0 )
7585 e2neIt->second._normal += dir2;
7587 e2neIt = edge2newEdge.insert( make_pair( edge2, zeroEdge )).first;
7588 e2neIt->second._normal += distWgt * newNormal;
7589 if ( Precision::IsInfinite( zeroEdge._maxLen ))
7591 e2neIt->second._cosin = edge2->_cosin;
7592 e2neIt->second.SetMaxLen( 1.3 * minIntDist / edge1->_lenFactor );
7594 if ( iter > 0 && sgn1 * sgn2 < 0 && edge2->_cosin < 0 )
7595 e2neIt->second._normal += dir1;
7599 if ( edge2newEdge.empty() )
7600 break; //return true;
7602 dumpFunction(SMESH_Comment("updateNormals")<< data._index << "_" << stepNb << "_it" << iter);
7604 // Update data of edges depending on a new _normal
7607 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7609 _LayerEdge* edge = e2neIt->first;
7610 _LayerEdge& newEdge = e2neIt->second;
7611 _EdgesOnShape* eos = data.GetShapeEdges( edge );
7612 if ( edge->Is( _LayerEdge::BLOCKED ) && newEdge._maxLen > edge->_len )
7615 // Check if a new _normal is OK:
7616 newEdge._normal.Normalize();
7617 if ( !isNewNormalOk( data, *edge, newEdge._normal ))
7619 if ( newEdge._maxLen < edge->_len && iter > 0 ) // limit _maxLen
7621 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7622 edge->SetMaxLen( newEdge._maxLen );
7623 edge->SetNewLength( newEdge._maxLen, *eos, helper );
7625 continue; // the new _normal is bad
7627 // the new _normal is OK
7629 // find shapes that need smoothing due to change of _normal
7630 if ( edge->_cosin < theMinSmoothCosin &&
7631 newEdge._cosin > theMinSmoothCosin )
7633 if ( eos->_sWOL.IsNull() )
7635 SMDS_ElemIteratorPtr fIt = edge->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
7636 while ( fIt->more() )
7637 shapesToSmooth.insert( data.GetShapeEdges( fIt->next()->getshapeId() ));
7639 else // edge inflates along a FACE
7641 TopoDS_Shape V = helper.GetSubShapeByNode( edge->_nodes[0], getMeshDS() );
7642 PShapeIteratorPtr eIt = helper.GetAncestors( V, *_mesh, TopAbs_EDGE, &eos->_sWOL );
7643 while ( const TopoDS_Shape* E = eIt->next() )
7645 gp_Vec edgeDir = getEdgeDir( TopoDS::Edge( *E ), TopoDS::Vertex( V ),
7646 eos->_hyp.Get1stLayerThickness() );
7647 double angle = edgeDir.Angle( newEdge._normal ); // [0,PI]
7648 if ( angle < M_PI / 2 )
7649 shapesToSmooth.insert( data.GetShapeEdges( *E ));
7654 double len = edge->_len;
7655 edge->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7656 edge->SetNormal( newEdge._normal );
7657 edge->SetCosin( newEdge._cosin );
7658 edge->SetNewLength( len, *eos, helper );
7659 edge->Set( _LayerEdge::MARKED );
7660 edge->Set( _LayerEdge::NORMAL_UPDATED );
7661 edgesNoAnaSmooth.insert( eos );
7664 // Update normals and other dependent data of not intersecting _LayerEdge's
7665 // neighboring the intersecting ones
7667 for ( e2neIt = edge2newEdge.begin(); e2neIt != edge2newEdge.end(); ++e2neIt )
7669 _LayerEdge* edge1 = e2neIt->first;
7670 _EdgesOnShape* eos1 = data.GetShapeEdges( edge1 );
7671 if ( !edge1->Is( _LayerEdge::MARKED ))
7674 if ( edge1->IsOnEdge() )
7676 const SMDS_MeshNode * n1 = edge1->_2neibors->srcNode(0);
7677 const SMDS_MeshNode * n2 = edge1->_2neibors->srcNode(1);
7678 edge1->SetDataByNeighbors( n1, n2, *eos1, helper );
7681 if ( !edge1->_2neibors || !eos1->_sWOL.IsNull() )
7683 for ( int j = 0; j < 2; ++j ) // loop on 2 neighbors
7685 _LayerEdge* neighbor = edge1->_2neibors->_edges[j];
7686 if ( neighbor->Is( _LayerEdge::MARKED ) /*edge2newEdge.count ( neighbor )*/)
7687 continue; // j-th neighbor is also intersected
7688 _LayerEdge* prevEdge = edge1;
7689 const int nbSteps = 10;
7690 for ( int step = nbSteps; step; --step ) // step from edge1 in j-th direction
7692 if ( neighbor->Is( _LayerEdge::BLOCKED ) ||
7693 neighbor->Is( _LayerEdge::MARKED ))
7695 _EdgesOnShape* eos = data.GetShapeEdges( neighbor );
7696 if ( !eos ) continue;
7697 _LayerEdge* nextEdge = neighbor;
7698 if ( neighbor->_2neibors )
7701 nextEdge = neighbor->_2neibors->_edges[iNext];
7702 if ( nextEdge == prevEdge )
7703 nextEdge = neighbor->_2neibors->_edges[ ++iNext ];
7705 double r = double(step-1)/nbSteps/(iter+1);
7706 if ( !nextEdge->_2neibors )
7709 gp_XYZ newNorm = prevEdge->_normal * r + nextEdge->_normal * (1-r);
7710 newNorm.Normalize();
7711 if ( !isNewNormalOk( data, *neighbor, newNorm ))
7714 double len = neighbor->_len;
7715 neighbor->InvalidateStep( stepNb + 1, *eos, /*restoreLength=*/true );
7716 neighbor->SetNormal( newNorm );
7717 neighbor->SetCosin( prevEdge->_cosin * r + nextEdge->_cosin * (1-r) );
7718 if ( neighbor->_2neibors )
7719 neighbor->SetDataByNeighbors( prevEdge->_nodes[0], nextEdge->_nodes[0], *eos, helper );
7720 neighbor->SetNewLength( len, *eos, helper );
7721 neighbor->Set( _LayerEdge::MARKED );
7722 neighbor->Set( _LayerEdge::NORMAL_UPDATED );
7723 edgesNoAnaSmooth.insert( eos );
7725 if ( !neighbor->_2neibors )
7726 break; // neighbor is on VERTEX
7728 // goto the next neighbor
7729 prevEdge = neighbor;
7730 neighbor = nextEdge;
7737 data.AddShapesToSmooth( shapesToSmooth, &edgesNoAnaSmooth );
7742 //================================================================================
7744 * \brief Check if a new normal is OK
7746 //================================================================================
7748 bool _ViscousBuilder::isNewNormalOk( _SolidData& data,
7750 const gp_XYZ& newNormal)
7752 // check a min angle between the newNormal and surrounding faces
7753 vector<_Simplex> simplices;
7754 SMESH_TNodeXYZ n0( edge._nodes[0] ), n1, n2;
7755 _Simplex::GetSimplices( n0._node, simplices, data._ignoreFaceIds, &data );
7756 double newMinDot = 1, curMinDot = 1;
7757 for ( size_t i = 0; i < simplices.size(); ++i )
7759 n1.Set( simplices[i]._nPrev );
7760 n2.Set( simplices[i]._nNext );
7761 gp_XYZ normFace = ( n1 - n0 ) ^ ( n2 - n0 );
7762 double normLen2 = normFace.SquareModulus();
7763 if ( normLen2 < std::numeric_limits<double>::min() )
7765 normFace /= Sqrt( normLen2 );
7766 newMinDot = Min( newNormal * normFace, newMinDot );
7767 curMinDot = Min( edge._normal * normFace, curMinDot );
7770 if ( newMinDot < 0.5 )
7772 ok = ( newMinDot >= curMinDot * 0.9 );
7773 //return ( newMinDot >= ( curMinDot * ( 0.8 + 0.1 * edge.NbSteps() )));
7774 // double initMinDot2 = 1. - edge._cosin * edge._cosin;
7775 // return ( newMinDot * newMinDot ) >= ( 0.8 * initMinDot2 );
7781 //================================================================================
7783 * \brief Modify normals of _LayerEdge's on FACE to reflex smoothing
7785 //================================================================================
7787 bool _ViscousBuilder::updateNormalsOfSmoothed( _SolidData& data,
7788 SMESH_MesherHelper& /*helper*/,
7790 const double stepSize )
7792 if ( data._nbShapesToSmooth == 0 || nbSteps == 0 )
7793 return true; // no shapes needing smoothing
7795 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7797 _EdgesOnShape& eos = data._edgesOnShape[ iS ];
7798 if ( //!eos._toSmooth || _eosC1 have _toSmooth == false
7799 !eos._hyp.ToSmooth() ||
7800 eos.ShapeType() != TopAbs_FACE ||
7801 eos._edges.empty() )
7804 bool toSmooth = ( eos._edges[ 0 ]->NbSteps() >= nbSteps+1 );
7805 if ( !toSmooth ) continue;
7807 for ( size_t i = 0; i < eos._edges.size(); ++i )
7809 _LayerEdge* edge = eos._edges[i];
7810 if ( !edge->Is( _LayerEdge::SMOOTHED ))
7812 if ( edge->Is( _LayerEdge::DIFFICULT ) && nbSteps != 1 )
7815 const gp_XYZ& pPrev = edge->PrevPos();
7816 const gp_XYZ& pLast = edge->_pos.back();
7817 gp_XYZ stepVec = pLast - pPrev;
7818 double realStepSize = stepVec.Modulus();
7819 if ( realStepSize < numeric_limits<double>::min() )
7822 edge->_lenFactor = realStepSize / stepSize;
7823 edge->_normal = stepVec / realStepSize;
7824 edge->Set( _LayerEdge::NORMAL_UPDATED );
7831 //================================================================================
7833 * \brief Modify normals of _LayerEdge's on C1 VERTEXes
7835 //================================================================================
7837 void _ViscousBuilder::updateNormalsOfC1Vertices( _SolidData& data )
7839 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
7841 _EdgesOnShape& eov = data._edgesOnShape[ iS ];
7842 if ( eov._eosC1.empty() ||
7843 eov.ShapeType() != TopAbs_VERTEX ||
7844 eov._edges.empty() )
7847 gp_XYZ newNorm = eov._edges[0]->_normal;
7848 double curThick = eov._edges[0]->_len * eov._edges[0]->_lenFactor;
7849 bool normChanged = false;
7851 for ( size_t i = 0; i < eov._eosC1.size(); ++i )
7853 _EdgesOnShape* eoe = eov._eosC1[i];
7854 const TopoDS_Edge& e = TopoDS::Edge( eoe->_shape );
7855 const double eLen = SMESH_Algo::EdgeLength( e );
7856 TopoDS_Shape oppV = SMESH_MesherHelper::IthVertex( 0, e );
7857 if ( oppV.IsSame( eov._shape ))
7858 oppV = SMESH_MesherHelper::IthVertex( 1, e );
7859 _EdgesOnShape* eovOpp = data.GetShapeEdges( oppV );
7860 if ( !eovOpp || eovOpp->_edges.empty() ) continue;
7861 if ( eov._edges[0]->Is( _LayerEdge::BLOCKED )) continue;
7863 double curThickOpp = eovOpp->_edges[0]->_len * eovOpp->_edges[0]->_lenFactor;
7864 if ( curThickOpp + curThick < eLen )
7867 double wgt = 2. * curThick / eLen;
7868 newNorm += wgt * eovOpp->_edges[0]->_normal;
7873 eov._edges[0]->SetNormal( newNorm.Normalized() );
7874 eov._edges[0]->Set( _LayerEdge::NORMAL_UPDATED );
7879 //================================================================================
7881 * \brief Modify normals of _LayerEdge's on _ConvexFace's
7883 //================================================================================
7885 bool _ViscousBuilder::updateNormalsOfConvexFaces( _SolidData& data,
7886 SMESH_MesherHelper& helper,
7889 SMESHDS_Mesh* meshDS = helper.GetMeshDS();
7892 map< TGeomID, _ConvexFace >::iterator id2face = data._convexFaces.begin();
7893 for ( ; id2face != data._convexFaces.end(); ++id2face )
7895 _ConvexFace & convFace = (*id2face).second;
7896 convFace._normalsFixedOnBorders = false; // to update at each inflation step
7898 if ( convFace._normalsFixed )
7899 continue; // already fixed
7900 if ( convFace.CheckPrisms() )
7901 continue; // nothing to fix
7903 convFace._normalsFixed = true;
7905 BRepAdaptor_Surface surface ( convFace._face, false );
7906 BRepLProp_SLProps surfProp( surface, 2, 1e-6 );
7908 // check if the convex FACE is of spherical shape
7910 Bnd_B3d centersBox; // bbox of centers of curvature of _LayerEdge's on VERTEXes
7914 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.begin();
7915 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7917 _EdgesOnShape& eos = *(id2eos->second);
7918 if ( eos.ShapeType() == TopAbs_VERTEX )
7920 _LayerEdge* ledge = eos._edges[ 0 ];
7921 if ( convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
7922 centersBox.Add( center );
7924 for ( size_t i = 0; i < eos._edges.size(); ++i )
7925 nodesBox.Add( SMESH_TNodeXYZ( eos._edges[ i ]->_nodes[0] ));
7927 if ( centersBox.IsVoid() )
7929 debugMsg( "Error: centersBox.IsVoid()" );
7932 const bool isSpherical =
7933 ( centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
7935 int nbEdges = helper.Count( convFace._face, TopAbs_EDGE, /*ignoreSame=*/false );
7936 vector < _CentralCurveOnEdge > centerCurves( nbEdges );
7940 // set _LayerEdge::_normal as average of all normals
7942 // WARNING: different density of nodes on EDGEs is not taken into account that
7943 // can lead to an improper new normal
7945 gp_XYZ avgNormal( 0,0,0 );
7947 id2eos = convFace._subIdToEOS.begin();
7948 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
7950 _EdgesOnShape& eos = *(id2eos->second);
7951 // set data of _CentralCurveOnEdge
7952 if ( eos.ShapeType() == TopAbs_EDGE )
7954 _CentralCurveOnEdge& ceCurve = centerCurves[ nbEdges++ ];
7955 ceCurve.SetShapes( TopoDS::Edge( eos._shape ), convFace, data, helper );
7956 if ( !eos._sWOL.IsNull() )
7957 ceCurve._adjFace.Nullify();
7959 ceCurve._ledges.insert( ceCurve._ledges.end(),
7960 eos._edges.begin(), eos._edges.end());
7962 // summarize normals
7963 for ( size_t i = 0; i < eos._edges.size(); ++i )
7964 avgNormal += eos._edges[ i ]->_normal;
7966 double normSize = avgNormal.SquareModulus();
7967 if ( normSize < 1e-200 )
7969 debugMsg( "updateNormalsOfConvexFaces(): zero avgNormal" );
7972 avgNormal /= Sqrt( normSize );
7974 // compute new _LayerEdge::_cosin on EDGEs
7975 double avgCosin = 0;
7978 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
7980 _CentralCurveOnEdge& ceCurve = centerCurves[ iE ];
7981 if ( ceCurve._adjFace.IsNull() )
7983 for ( size_t iLE = 0; iLE < ceCurve._ledges.size(); ++iLE )
7985 const SMDS_MeshNode* node = ceCurve._ledges[ iLE ]->_nodes[0];
7986 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
7989 double angle = inFaceDir.Angle( avgNormal ); // [0,PI]
7990 ceCurve._ledges[ iLE ]->_cosin = Cos( angle );
7991 avgCosin += ceCurve._ledges[ iLE ]->_cosin;
7997 avgCosin /= nbCosin;
7999 // set _LayerEdge::_normal = avgNormal
8000 id2eos = convFace._subIdToEOS.begin();
8001 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8003 _EdgesOnShape& eos = *(id2eos->second);
8004 if ( eos.ShapeType() != TopAbs_EDGE )
8005 for ( size_t i = 0; i < eos._edges.size(); ++i )
8006 eos._edges[ i ]->_cosin = avgCosin;
8008 for ( size_t i = 0; i < eos._edges.size(); ++i )
8010 eos._edges[ i ]->SetNormal( avgNormal );
8011 eos._edges[ i ]->Set( _LayerEdge::NORMAL_UPDATED );
8015 else // if ( isSpherical )
8017 // We suppose that centers of curvature at all points of the FACE
8018 // lie on some curve, let's call it "central curve". For all _LayerEdge's
8019 // having a common center of curvature we define the same new normal
8020 // as a sum of normals of _LayerEdge's on EDGEs among them.
8022 // get all centers of curvature for each EDGE
8024 helper.SetSubShape( convFace._face );
8025 _LayerEdge* vertexLEdges[2], **edgeLEdge, **edgeLEdgeEnd;
8027 TopExp_Explorer edgeExp( convFace._face, TopAbs_EDGE );
8028 for ( int iE = 0; edgeExp.More(); edgeExp.Next(), ++iE )
8030 const TopoDS_Edge& edge = TopoDS::Edge( edgeExp.Current() );
8032 // set adjacent FACE
8033 centerCurves[ iE ].SetShapes( edge, convFace, data, helper );
8035 // get _LayerEdge's of the EDGE
8036 TGeomID edgeID = meshDS->ShapeToIndex( edge );
8037 _EdgesOnShape* eos = data.GetShapeEdges( edgeID );
8038 if ( !eos || eos->_edges.empty() )
8040 // no _LayerEdge's on EDGE, use _LayerEdge's on VERTEXes
8041 for ( int iV = 0; iV < 2; ++iV )
8043 TopoDS_Vertex v = helper.IthVertex( iV, edge );
8044 TGeomID vID = meshDS->ShapeToIndex( v );
8045 eos = data.GetShapeEdges( vID );
8046 vertexLEdges[ iV ] = eos->_edges[ 0 ];
8048 edgeLEdge = &vertexLEdges[0];
8049 edgeLEdgeEnd = edgeLEdge + 2;
8051 centerCurves[ iE ]._adjFace.Nullify();
8055 if ( ! eos->_toSmooth )
8056 data.SortOnEdge( edge, eos->_edges );
8057 edgeLEdge = &eos->_edges[ 0 ];
8058 edgeLEdgeEnd = edgeLEdge + eos->_edges.size();
8059 vertexLEdges[0] = eos->_edges.front()->_2neibors->_edges[0];
8060 vertexLEdges[1] = eos->_edges.back() ->_2neibors->_edges[1];
8062 if ( ! eos->_sWOL.IsNull() )
8063 centerCurves[ iE ]._adjFace.Nullify();
8066 // Get curvature centers
8070 if ( edgeLEdge[0]->IsOnEdge() &&
8071 convFace.GetCenterOfCurvature( vertexLEdges[0], surfProp, helper, center ))
8073 centerCurves[ iE ].Append( center, vertexLEdges[0] );
8074 centersBox.Add( center );
8076 for ( ; edgeLEdge < edgeLEdgeEnd; ++edgeLEdge )
8077 if ( convFace.GetCenterOfCurvature( *edgeLEdge, surfProp, helper, center ))
8078 { // EDGE or VERTEXes
8079 centerCurves[ iE ].Append( center, *edgeLEdge );
8080 centersBox.Add( center );
8082 if ( edgeLEdge[-1]->IsOnEdge() &&
8083 convFace.GetCenterOfCurvature( vertexLEdges[1], surfProp, helper, center ))
8085 centerCurves[ iE ].Append( center, vertexLEdges[1] );
8086 centersBox.Add( center );
8088 centerCurves[ iE ]._isDegenerated =
8089 ( centersBox.IsVoid() || centersBox.SquareExtent() < 1e-6 * nodesBox.SquareExtent() );
8091 } // loop on EDGES of convFace._face to set up data of centerCurves
8093 // Compute new normals for _LayerEdge's on EDGEs
8095 double avgCosin = 0;
8098 for ( size_t iE1 = 0; iE1 < centerCurves.size(); ++iE1 )
8100 _CentralCurveOnEdge& ceCurve = centerCurves[ iE1 ];
8101 if ( ceCurve._isDegenerated )
8103 const vector< gp_Pnt >& centers = ceCurve._curvaCenters;
8104 vector< gp_XYZ > & newNormals = ceCurve._normals;
8105 for ( size_t iC1 = 0; iC1 < centers.size(); ++iC1 )
8108 for ( size_t iE2 = 0; iE2 < centerCurves.size() && !isOK; ++iE2 )
8111 isOK = centerCurves[ iE2 ].FindNewNormal( centers[ iC1 ], newNormals[ iC1 ]);
8113 if ( isOK && !ceCurve._adjFace.IsNull() )
8115 // compute new _LayerEdge::_cosin
8116 const SMDS_MeshNode* node = ceCurve._ledges[ iC1 ]->_nodes[0];
8117 inFaceDir = getFaceDir( ceCurve._adjFace, ceCurve._edge, node, helper, isOK );
8120 double angle = inFaceDir.Angle( newNormals[ iC1 ] ); // [0,PI]
8121 ceCurve._ledges[ iC1 ]->_cosin = Cos( angle );
8122 avgCosin += ceCurve._ledges[ iC1 ]->_cosin;
8128 // set new normals to _LayerEdge's of NOT degenerated central curves
8129 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8131 if ( centerCurves[ iE ]._isDegenerated )
8133 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8135 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( centerCurves[ iE ]._normals[ iLE ]);
8136 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8139 // set new normals to _LayerEdge's of degenerated central curves
8140 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8142 if ( !centerCurves[ iE ]._isDegenerated ||
8143 centerCurves[ iE ]._ledges.size() < 3 )
8145 // new normal is an average of new normals at VERTEXes that
8146 // was computed on non-degenerated _CentralCurveOnEdge's
8147 gp_XYZ newNorm = ( centerCurves[ iE ]._ledges.front()->_normal +
8148 centerCurves[ iE ]._ledges.back ()->_normal );
8149 double sz = newNorm.Modulus();
8153 double newCosin = ( 0.5 * centerCurves[ iE ]._ledges.front()->_cosin +
8154 0.5 * centerCurves[ iE ]._ledges.back ()->_cosin );
8155 for ( size_t iLE = 1, nb = centerCurves[ iE ]._ledges.size() - 1; iLE < nb; ++iLE )
8157 centerCurves[ iE ]._ledges[ iLE ]->SetNormal( newNorm );
8158 centerCurves[ iE ]._ledges[ iLE ]->_cosin = newCosin;
8159 centerCurves[ iE ]._ledges[ iLE ]->Set( _LayerEdge::NORMAL_UPDATED );
8163 // Find new normals for _LayerEdge's based on FACE
8166 avgCosin /= nbCosin;
8167 const TGeomID faceID = meshDS->ShapeToIndex( convFace._face );
8168 map< TGeomID, _EdgesOnShape* >::iterator id2eos = convFace._subIdToEOS.find( faceID );
8169 if ( id2eos != convFace._subIdToEOS.end() )
8173 _EdgesOnShape& eos = * ( id2eos->second );
8174 for ( size_t i = 0; i < eos._edges.size(); ++i )
8176 _LayerEdge* ledge = eos._edges[ i ];
8177 if ( !convFace.GetCenterOfCurvature( ledge, surfProp, helper, center ))
8179 for ( size_t i = 0; i < centerCurves.size(); ++i, ++iE )
8181 iE = iE % centerCurves.size();
8182 if ( centerCurves[ iE ]._isDegenerated )
8184 newNorm.SetCoord( 0,0,0 );
8185 if ( centerCurves[ iE ].FindNewNormal( center, newNorm ))
8187 ledge->SetNormal( newNorm );
8188 ledge->_cosin = avgCosin;
8189 ledge->Set( _LayerEdge::NORMAL_UPDATED );
8196 } // not a quasi-spherical FACE
8198 // Update _LayerEdge's data according to a new normal
8200 dumpFunction(SMESH_Comment("updateNormalsOfConvexFaces")<<data._index
8201 <<"_F"<<meshDS->ShapeToIndex( convFace._face ));
8203 id2eos = convFace._subIdToEOS.begin();
8204 for ( ; id2eos != convFace._subIdToEOS.end(); ++id2eos )
8206 _EdgesOnShape& eos = * ( id2eos->second );
8207 for ( size_t i = 0; i < eos._edges.size(); ++i )
8209 _LayerEdge* & ledge = eos._edges[ i ];
8210 double len = ledge->_len;
8211 ledge->InvalidateStep( stepNb + 1, eos, /*restoreLength=*/true );
8212 ledge->SetCosin( ledge->_cosin );
8213 ledge->SetNewLength( len, eos, helper );
8215 if ( eos.ShapeType() != TopAbs_FACE )
8216 for ( size_t i = 0; i < eos._edges.size(); ++i )
8218 _LayerEdge* ledge = eos._edges[ i ];
8219 for ( size_t iN = 0; iN < ledge->_neibors.size(); ++iN )
8221 _LayerEdge* neibor = ledge->_neibors[iN];
8222 if ( neibor->_nodes[0]->GetPosition()->GetDim() == 2 )
8224 neibor->Set( _LayerEdge::NEAR_BOUNDARY );
8225 neibor->Set( _LayerEdge::MOVED );
8226 neibor->SetSmooLen( neibor->_len );
8230 } // loop on sub-shapes of convFace._face
8232 // Find FACEs adjacent to convFace._face that got necessity to smooth
8233 // as a result of normals modification
8235 set< _EdgesOnShape* > adjFacesToSmooth;
8236 for ( size_t iE = 0; iE < centerCurves.size(); ++iE )
8238 if ( centerCurves[ iE ]._adjFace.IsNull() ||
8239 centerCurves[ iE ]._adjFaceToSmooth )
8241 for ( size_t iLE = 0; iLE < centerCurves[ iE ]._ledges.size(); ++iLE )
8243 if ( centerCurves[ iE ]._ledges[ iLE ]->_cosin > theMinSmoothCosin )
8245 adjFacesToSmooth.insert( data.GetShapeEdges( centerCurves[ iE ]._adjFace ));
8250 data.AddShapesToSmooth( adjFacesToSmooth );
8255 } // loop on data._convexFaces
8260 //================================================================================
8262 * \brief Return max curvature of a FACE
8264 //================================================================================
8266 double _ConvexFace::GetMaxCurvature( _SolidData& data,
8268 BRepLProp_SLProps& surfProp,
8269 SMESH_MesherHelper& helper)
8271 double maxCurvature = 0;
8273 TopoDS_Face F = TopoDS::Face( eof._shape );
8275 const int nbTestPnt = 5;
8276 const double oriFactor = ( F.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8277 SMESH_subMeshIteratorPtr smIt = eof._subMesh->getDependsOnIterator(/*includeSelf=*/true);
8278 while ( smIt->more() )
8280 SMESH_subMesh* sm = smIt->next();
8281 const TGeomID subID = sm->GetId();
8283 // find _LayerEdge's of a sub-shape
8285 if (( eos = data.GetShapeEdges( subID )))
8286 this->_subIdToEOS.insert( make_pair( subID, eos ));
8290 // check concavity and curvature and limit data._stepSize
8291 const double minCurvature =
8292 1. / ( eos->_hyp.GetTotalThickness() * ( 1 + theThickToIntersection ));
8293 size_t iStep = Max( 1, eos->_edges.size() / nbTestPnt );
8294 for ( size_t i = 0; i < eos->_edges.size(); i += iStep )
8296 gp_XY uv = helper.GetNodeUV( F, eos->_edges[ i ]->_nodes[0] );
8297 surfProp.SetParameters( uv.X(), uv.Y() );
8298 if ( surfProp.IsCurvatureDefined() )
8300 double curvature = Max( surfProp.MaxCurvature() * oriFactor,
8301 surfProp.MinCurvature() * oriFactor );
8302 maxCurvature = Max( maxCurvature, curvature );
8304 if ( curvature > minCurvature )
8305 this->_isTooCurved = true;
8308 } // loop on sub-shapes of the FACE
8310 return maxCurvature;
8313 //================================================================================
8315 * \brief Finds a center of curvature of a surface at a _LayerEdge
8317 //================================================================================
8319 bool _ConvexFace::GetCenterOfCurvature( _LayerEdge* ledge,
8320 BRepLProp_SLProps& surfProp,
8321 SMESH_MesherHelper& helper,
8322 gp_Pnt & center ) const
8324 gp_XY uv = helper.GetNodeUV( _face, ledge->_nodes[0] );
8325 surfProp.SetParameters( uv.X(), uv.Y() );
8326 if ( !surfProp.IsCurvatureDefined() )
8329 const double oriFactor = ( _face.Orientation() == TopAbs_REVERSED ? +1. : -1. );
8330 double surfCurvatureMax = surfProp.MaxCurvature() * oriFactor;
8331 double surfCurvatureMin = surfProp.MinCurvature() * oriFactor;
8332 if ( surfCurvatureMin > surfCurvatureMax )
8333 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMin * oriFactor );
8335 center = surfProp.Value().Translated( surfProp.Normal().XYZ() / surfCurvatureMax * oriFactor );
8340 //================================================================================
8342 * \brief Check that prisms are not distorted
8344 //================================================================================
8346 bool _ConvexFace::CheckPrisms() const
8349 for ( size_t i = 0; i < _simplexTestEdges.size(); ++i )
8351 const _LayerEdge* edge = _simplexTestEdges[i];
8352 SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
8353 for ( size_t j = 0; j < edge->_simplices.size(); ++j )
8354 if ( !edge->_simplices[j].IsForward( edge->_nodes[0], tgtXYZ, vol ))
8356 debugMsg( "Bad simplex of _simplexTestEdges ("
8357 << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
8358 << " "<< edge->_simplices[j]._nPrev->GetID()
8359 << " "<< edge->_simplices[j]._nNext->GetID() << " )" );
8366 //================================================================================
8368 * \brief Try to compute a new normal by interpolating normals of _LayerEdge's
8369 * stored in this _CentralCurveOnEdge.
8370 * \param [in] center - curvature center of a point of another _CentralCurveOnEdge.
8371 * \param [in,out] newNormal - current normal at this point, to be redefined
8372 * \return bool - true if succeeded.
8374 //================================================================================
8376 bool _CentralCurveOnEdge::FindNewNormal( const gp_Pnt& center, gp_XYZ& newNormal )
8378 if ( this->_isDegenerated )
8381 // find two centers the given one lies between
8383 for ( size_t i = 0, nb = _curvaCenters.size()-1; i < nb; ++i )
8385 double sl2 = 1.001 * _segLength2[ i ];
8387 double d1 = center.SquareDistance( _curvaCenters[ i ]);
8391 double d2 = center.SquareDistance( _curvaCenters[ i+1 ]);
8392 if ( d2 > sl2 || d2 + d1 < 1e-100 )
8397 double r = d1 / ( d1 + d2 );
8398 gp_XYZ norm = (( 1. - r ) * _ledges[ i ]->_normal +
8399 ( r ) * _ledges[ i+1 ]->_normal );
8403 double sz = newNormal.Modulus();
8412 //================================================================================
8414 * \brief Set shape members
8416 //================================================================================
8418 void _CentralCurveOnEdge::SetShapes( const TopoDS_Edge& edge,
8419 const _ConvexFace& convFace,
8421 SMESH_MesherHelper& helper)
8425 PShapeIteratorPtr fIt = helper.GetAncestors( edge, *helper.GetMesh(), TopAbs_FACE );
8426 while ( const TopoDS_Shape* F = fIt->next())
8427 if ( !convFace._face.IsSame( *F ))
8429 _adjFace = TopoDS::Face( *F );
8430 _adjFaceToSmooth = false;
8431 // _adjFace already in a smoothing queue ?
8432 if ( _EdgesOnShape* eos = data.GetShapeEdges( _adjFace ))
8433 _adjFaceToSmooth = eos->_toSmooth;
8438 //================================================================================
8440 * \brief Looks for intersection of it's last segment with faces
8441 * \param distance - returns shortest distance from the last node to intersection
8443 //================================================================================
8445 bool _LayerEdge::FindIntersection( SMESH_ElementSearcher& searcher,
8447 const double& epsilon,
8449 const SMDS_MeshElement** intFace)
8451 vector< const SMDS_MeshElement* > suspectFaces;
8453 gp_Ax1 lastSegment = LastSegment( segLen, eos );
8454 searcher.GetElementsNearLine( lastSegment, SMDSAbs_Face, suspectFaces );
8456 bool segmentIntersected = false;
8457 distance = Precision::Infinite();
8458 int iFace = -1; // intersected face
8459 for ( size_t j = 0 ; j < suspectFaces.size() /*&& !segmentIntersected*/; ++j )
8461 const SMDS_MeshElement* face = suspectFaces[j];
8462 if ( face->GetNodeIndex( _nodes.back() ) >= 0 ||
8463 face->GetNodeIndex( _nodes[0] ) >= 0 )
8464 continue; // face sharing _LayerEdge node
8465 const int nbNodes = face->NbCornerNodes();
8466 bool intFound = false;
8468 SMDS_MeshElement::iterator nIt = face->begin_nodes();
8471 intFound = SegTriaInter( lastSegment, *nIt++, *nIt++, *nIt++, dist, epsilon );
8475 const SMDS_MeshNode* tria[3];
8478 for ( int n2 = 2; n2 < nbNodes && !intFound; ++n2 )
8481 intFound = SegTriaInter(lastSegment, tria[0], tria[1], tria[2], dist, epsilon );
8487 if ( dist < segLen*(1.01) && dist > -(_len*_lenFactor-segLen) )
8488 segmentIntersected = true;
8489 if ( distance > dist )
8490 distance = dist, iFace = j;
8493 if ( intFace ) *intFace = ( iFace != -1 ) ? suspectFaces[iFace] : 0;
8497 if ( segmentIntersected )
8500 SMDS_MeshElement::iterator nIt = suspectFaces[iFace]->begin_nodes();
8501 gp_XYZ intP( lastSegment.Location().XYZ() + lastSegment.Direction().XYZ() * ( distance+segLen ));
8502 cout << "nodes: tgt " << _nodes.back()->GetID() << " src " << _nodes[0]->GetID()
8503 << ", intersection with face ("
8504 << (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()<<" "<< (*nIt++)->GetID()
8505 << ") at point (" << intP.X() << ", " << intP.Y() << ", " << intP.Z()
8506 << ") distance = " << distance << endl;
8510 return segmentIntersected;
8513 //================================================================================
8515 * \brief Returns a point used to check orientation of _simplices
8517 //================================================================================
8519 gp_XYZ _LayerEdge::PrevCheckPos( _EdgesOnShape* eos ) const
8521 size_t i = Is( NORMAL_UPDATED ) && IsOnFace() ? _pos.size()-2 : 0;
8523 if ( !eos || eos->_sWOL.IsNull() )
8526 if ( eos->SWOLType() == TopAbs_EDGE )
8528 return BRepAdaptor_Curve( TopoDS::Edge( eos->_sWOL )).Value( _pos[i].X() ).XYZ();
8530 //else // TopAbs_FACE
8532 return BRepAdaptor_Surface( TopoDS::Face( eos->_sWOL )).Value(_pos[i].X(), _pos[i].Y() ).XYZ();
8535 //================================================================================
8537 * \brief Returns size and direction of the last segment
8539 //================================================================================
8541 gp_Ax1 _LayerEdge::LastSegment(double& segLen, _EdgesOnShape& eos) const
8543 // find two non-coincident positions
8544 gp_XYZ orig = _pos.back();
8546 int iPrev = _pos.size() - 2;
8547 //const double tol = ( _len > 0 ) ? 0.3*_len : 1e-100; // adjusted for IPAL52478 + PAL22576
8548 const double tol = ( _len > 0 ) ? ( 1e-6 * _len ) : 1e-100;
8549 while ( iPrev >= 0 )
8551 vec = orig - _pos[iPrev];
8552 if ( vec.SquareModulus() > tol*tol )
8562 segDir.SetLocation( SMESH_TNodeXYZ( _nodes[0] ));
8563 segDir.SetDirection( _normal );
8568 gp_Pnt pPrev = _pos[ iPrev ];
8569 if ( !eos._sWOL.IsNull() )
8571 TopLoc_Location loc;
8572 if ( eos.SWOLType() == TopAbs_EDGE )
8575 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
8576 pPrev = curve->Value( pPrev.X() ).Transformed( loc );
8580 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( eos._sWOL ), loc );
8581 pPrev = surface->Value( pPrev.X(), pPrev.Y() ).Transformed( loc );
8583 vec = SMESH_TNodeXYZ( _nodes.back() ) - pPrev.XYZ();
8585 segDir.SetLocation( pPrev );
8586 segDir.SetDirection( vec );
8587 segLen = vec.Modulus();
8593 //================================================================================
8595 * \brief Return the last (or \a which) position of the target node on a FACE.
8596 * \param [in] F - the FACE this _LayerEdge is inflated along
8597 * \param [in] which - index of position
8598 * \return gp_XY - result UV
8600 //================================================================================
8602 gp_XY _LayerEdge::LastUV( const TopoDS_Face& F, _EdgesOnShape& eos, int which ) const
8604 if ( F.IsSame( eos._sWOL )) // F is my FACE
8605 return gp_XY( _pos.back().X(), _pos.back().Y() );
8607 if ( eos.SWOLType() != TopAbs_EDGE ) // wrong call
8608 return gp_XY( 1e100, 1e100 );
8610 // _sWOL is EDGE of F; _pos.back().X() is the last U on the EDGE
8611 double f, l, u = _pos[ which < 0 ? _pos.size()-1 : which ].X();
8612 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface( TopoDS::Edge(eos._sWOL), F, f,l);
8613 if ( !C2d.IsNull() && f <= u && u <= l )
8614 return C2d->Value( u ).XY();
8616 return gp_XY( 1e100, 1e100 );
8619 //================================================================================
8621 * \brief Test intersection of the last segment with a given triangle
8622 * using Moller-Trumbore algorithm
8623 * Intersection is detected if distance to intersection is less than _LayerEdge._len
8625 //================================================================================
8627 bool _LayerEdge::SegTriaInter( const gp_Ax1& lastSegment,
8628 const gp_XYZ& vert0,
8629 const gp_XYZ& vert1,
8630 const gp_XYZ& vert2,
8632 const double& EPSILON) const
8634 const gp_Pnt& orig = lastSegment.Location();
8635 const gp_Dir& dir = lastSegment.Direction();
8637 /* calculate distance from vert0 to ray origin */
8638 //gp_XYZ tvec = orig.XYZ() - vert0;
8640 //if ( tvec * dir > EPSILON )
8641 // intersected face is at back side of the temporary face this _LayerEdge belongs to
8644 gp_XYZ edge1 = vert1 - vert0;
8645 gp_XYZ edge2 = vert2 - vert0;
8647 /* begin calculating determinant - also used to calculate U parameter */
8648 gp_XYZ pvec = dir.XYZ() ^ edge2;
8650 /* if determinant is near zero, ray lies in plane of triangle */
8651 double det = edge1 * pvec;
8653 const double ANGL_EPSILON = 1e-12;
8654 if ( det > -ANGL_EPSILON && det < ANGL_EPSILON )
8657 /* calculate distance from vert0 to ray origin */
8658 gp_XYZ tvec = orig.XYZ() - vert0;
8660 /* calculate U parameter and test bounds */
8661 double u = ( tvec * pvec ) / det;
8662 //if (u < 0.0 || u > 1.0)
8663 if ( u < -EPSILON || u > 1.0 + EPSILON )
8666 /* prepare to test V parameter */
8667 gp_XYZ qvec = tvec ^ edge1;
8669 /* calculate V parameter and test bounds */
8670 double v = (dir.XYZ() * qvec) / det;
8671 //if ( v < 0.0 || u + v > 1.0 )
8672 if ( v < -EPSILON || u + v > 1.0 + EPSILON )
8675 /* calculate t, ray intersects triangle */
8676 t = (edge2 * qvec) / det;
8682 //================================================================================
8684 * \brief _LayerEdge, located at a concave VERTEX of a FACE, moves target nodes of
8685 * neighbor _LayerEdge's by it's own inflation vector.
8686 * \param [in] eov - EOS of the VERTEX
8687 * \param [in] eos - EOS of the FACE
8688 * \param [in] step - inflation step
8689 * \param [in,out] badSmooEdges - tangled _LayerEdge's
8691 //================================================================================
8693 void _LayerEdge::MoveNearConcaVer( const _EdgesOnShape* eov,
8694 const _EdgesOnShape* eos,
8696 vector< _LayerEdge* > & badSmooEdges )
8698 // check if any of _neibors is in badSmooEdges
8699 if ( std::find_first_of( _neibors.begin(), _neibors.end(),
8700 badSmooEdges.begin(), badSmooEdges.end() ) == _neibors.end() )
8703 // get all edges to move
8705 set< _LayerEdge* > edges;
8707 // find a distance between _LayerEdge on VERTEX and its neighbors
8708 gp_XYZ curPosV = SMESH_TNodeXYZ( _nodes.back() );
8710 for ( size_t i = 0; i < _neibors.size(); ++i )
8712 _LayerEdge* nEdge = _neibors[i];
8713 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID )
8715 edges.insert( nEdge );
8716 dist2 = Max( dist2, ( curPosV - nEdge->_pos.back() ).SquareModulus() );
8719 // add _LayerEdge's close to curPosV
8723 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8725 _LayerEdge* edgeF = *e;
8726 for ( size_t i = 0; i < edgeF->_neibors.size(); ++i )
8728 _LayerEdge* nEdge = edgeF->_neibors[i];
8729 if ( nEdge->_nodes[0]->getshapeId() == eos->_shapeID &&
8730 dist2 > ( curPosV - nEdge->_pos.back() ).SquareModulus() )
8731 edges.insert( nEdge );
8735 while ( nbE < edges.size() );
8737 // move the target node of the got edges
8739 gp_XYZ prevPosV = PrevPos();
8740 if ( eov->SWOLType() == TopAbs_EDGE )
8742 BRepAdaptor_Curve curve ( TopoDS::Edge( eov->_sWOL ));
8743 prevPosV = curve.Value( prevPosV.X() ).XYZ();
8745 else if ( eov->SWOLType() == TopAbs_FACE )
8747 BRepAdaptor_Surface surface( TopoDS::Face( eov->_sWOL ));
8748 prevPosV = surface.Value( prevPosV.X(), prevPosV.Y() ).XYZ();
8751 SMDS_FacePositionPtr fPos;
8752 //double r = 1. - Min( 0.9, step / 10. );
8753 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8755 _LayerEdge* edgeF = *e;
8756 const gp_XYZ prevVF = edgeF->PrevPos() - prevPosV;
8757 const gp_XYZ newPosF = curPosV + prevVF;
8758 SMDS_MeshNode* tgtNodeF = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8759 tgtNodeF->setXYZ( newPosF.X(), newPosF.Y(), newPosF.Z() );
8760 edgeF->_pos.back() = newPosF;
8761 dumpMoveComm( tgtNodeF, "MoveNearConcaVer" ); // debug
8763 // set _curvature to make edgeF updated by putOnOffsetSurface()
8764 if ( !edgeF->_curvature )
8765 if (( fPos = edgeF->_nodes[0]->GetPosition() ))
8767 edgeF->_curvature = _Factory::NewCurvature();
8768 edgeF->_curvature->_r = 0;
8769 edgeF->_curvature->_k = 0;
8770 edgeF->_curvature->_h2lenRatio = 0;
8771 edgeF->_curvature->_uv.SetCoord( fPos->GetUParameter(), fPos->GetVParameter() );
8774 // gp_XYZ inflationVec( SMESH_TNodeXYZ( _nodes.back() ) -
8775 // SMESH_TNodeXYZ( _nodes[0] ));
8776 // for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8778 // _LayerEdge* edgeF = *e;
8779 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8780 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8781 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8782 // edgeF->_pos.back() = newPosF;
8783 // dumpMoveComm( tgtNode, "MoveNearConcaVer" ); // debug
8786 // smooth _LayerEdge's around moved nodes
8787 //size_t nbBadBefore = badSmooEdges.size();
8788 for ( set< _LayerEdge* >::iterator e = edges.begin(); e != edges.end(); ++e )
8790 _LayerEdge* edgeF = *e;
8791 for ( size_t j = 0; j < edgeF->_neibors.size(); ++j )
8792 if ( edgeF->_neibors[j]->_nodes[0]->getshapeId() == eos->_shapeID )
8793 //&& !edges.count( edgeF->_neibors[j] ))
8795 _LayerEdge* edgeFN = edgeF->_neibors[j];
8796 edgeFN->Unset( SMOOTHED );
8797 int nbBad = edgeFN->Smooth( step, /*isConcaFace=*/true, /*findBest=*/true );
8800 // gp_XYZ newPos = SMESH_TNodeXYZ( edgeFN->_nodes[0] ) + inflationVec;
8801 // const gp_XYZ& prevPos = edgeFN->_pos[ edgeFN->_pos.size()-2 ];
8802 // int nbBadAfter = edgeFN->_simplices.size();
8804 // for ( size_t iS = 0; iS < edgeFN->_simplices.size(); ++iS )
8806 // nbBadAfter -= edgeFN->_simplices[iS].IsForward( &prevPos, &newPos, vol );
8808 // if ( nbBadAfter <= nbBad )
8810 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeFN->_nodes.back() );
8811 // tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8812 // edgeF->_pos.back() = newPosF;
8813 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8814 // nbBad = nbBadAfter;
8818 badSmooEdges.push_back( edgeFN );
8821 // move a bit not smoothed around moved nodes
8822 // for ( size_t i = nbBadBefore; i < badSmooEdges.size(); ++i )
8824 // _LayerEdge* edgeF = badSmooEdges[i];
8825 // SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( edgeF->_nodes.back() );
8826 // gp_XYZ newPos1 = SMESH_TNodeXYZ( edgeF->_nodes[0] ) + inflationVec;
8827 // gp_XYZ newPos2 = 0.5 * ( newPos1 + SMESH_TNodeXYZ( tgtNode ));
8828 // tgtNode->setXYZ( newPos2.X(), newPos2.Y(), newPos2.Z() );
8829 // edgeF->_pos.back() = newPosF;
8830 // dumpMoveComm( tgtNode, "MoveNearConcaVer 2" ); // debug
8834 //================================================================================
8836 * \brief Perform smooth of _LayerEdge's based on EDGE's
8837 * \retval bool - true if node has been moved
8839 //================================================================================
8841 bool _LayerEdge::SmoothOnEdge(Handle(ShapeAnalysis_Surface)& surface,
8842 const TopoDS_Face& F,
8843 SMESH_MesherHelper& helper)
8845 ASSERT( IsOnEdge() );
8847 SMDS_MeshNode* tgtNode = const_cast<SMDS_MeshNode*>( _nodes.back() );
8848 SMESH_TNodeXYZ oldPos( tgtNode );
8849 double dist01, distNewOld;
8851 SMESH_TNodeXYZ p0( _2neibors->tgtNode(0));
8852 SMESH_TNodeXYZ p1( _2neibors->tgtNode(1));
8853 dist01 = p0.Distance( _2neibors->tgtNode(1) );
8855 gp_Pnt newPos = p0 * _2neibors->_wgt[0] + p1 * _2neibors->_wgt[1];
8856 double lenDelta = 0;
8859 //lenDelta = _curvature->lenDelta( _len );
8860 lenDelta = _curvature->lenDeltaByDist( dist01 );
8861 newPos.ChangeCoord() += _normal * lenDelta;
8864 distNewOld = newPos.Distance( oldPos );
8868 if ( _2neibors->_plnNorm )
8870 // put newPos on the plane defined by source node and _plnNorm
8871 gp_XYZ new2src = SMESH_TNodeXYZ( _nodes[0] ) - newPos.XYZ();
8872 double new2srcProj = (*_2neibors->_plnNorm) * new2src;
8873 newPos.ChangeCoord() += (*_2neibors->_plnNorm) * new2srcProj;
8875 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8876 _pos.back() = newPos.XYZ();
8880 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8881 gp_XY uv( Precision::Infinite(), 0 );
8882 helper.CheckNodeUV( F, tgtNode, uv, 1e-10, /*force=*/true );
8883 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
8885 newPos = surface->Value( uv );
8886 tgtNode->setXYZ( newPos.X(), newPos.Y(), newPos.Z() );
8889 // commented for IPAL0052478
8890 // if ( _curvature && lenDelta < 0 )
8892 // gp_Pnt prevPos( _pos[ _pos.size()-2 ]);
8893 // _len -= prevPos.Distance( oldPos );
8894 // _len += prevPos.Distance( newPos );
8896 bool moved = distNewOld > dist01/50;
8898 dumpMove( tgtNode ); // debug
8903 //================================================================================
8905 * \brief Perform 3D smooth of nodes inflated from FACE. No check of validity
8907 //================================================================================
8909 void _LayerEdge::SmoothWoCheck()
8911 if ( Is( DIFFICULT ))
8914 bool moved = Is( SMOOTHED );
8915 for ( size_t i = 0; i < _neibors.size() && !moved; ++i )
8916 moved = _neibors[i]->Is( SMOOTHED );
8920 gp_XYZ newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
8922 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
8923 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
8924 _pos.back() = newPos;
8926 dumpMoveComm( n, SMESH_Comment("No check - ") << _funNames[ smooFunID() ]);
8929 //================================================================================
8931 * \brief Checks validity of _neibors on EDGEs and VERTEXes
8933 //================================================================================
8935 int _LayerEdge::CheckNeiborsOnBoundary( vector< _LayerEdge* >* badNeibors, bool * needSmooth )
8937 if ( ! Is( NEAR_BOUNDARY ))
8942 for ( size_t iN = 0; iN < _neibors.size(); ++iN )
8944 _LayerEdge* eN = _neibors[iN];
8945 if ( eN->_nodes[0]->getshapeId() == _nodes[0]->getshapeId() )
8948 *needSmooth |= ( eN->Is( _LayerEdge::BLOCKED ) ||
8949 eN->Is( _LayerEdge::NORMAL_UPDATED ) ||
8950 eN->_pos.size() != _pos.size() );
8952 SMESH_TNodeXYZ curPosN ( eN->_nodes.back() );
8953 SMESH_TNodeXYZ prevPosN( eN->_nodes[0] );
8954 for ( size_t i = 0; i < eN->_simplices.size(); ++i )
8955 if ( eN->_nodes.size() > 1 &&
8956 eN->_simplices[i].Includes( _nodes.back() ) &&
8957 !eN->_simplices[i].IsForward( &prevPosN, &curPosN, vol ))
8962 badNeibors->push_back( eN );
8963 debugMsg("Bad boundary simplex ( "
8964 << " "<< eN->_nodes[0]->GetID()
8965 << " "<< eN->_nodes.back()->GetID()
8966 << " "<< eN->_simplices[i]._nPrev->GetID()
8967 << " "<< eN->_simplices[i]._nNext->GetID() << " )" );
8978 //================================================================================
8980 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
8981 * \retval int - nb of bad simplices around this _LayerEdge
8983 //================================================================================
8985 int _LayerEdge::Smooth(const int step, bool findBest, vector< _LayerEdge* >& toSmooth )
8987 if ( !Is( MOVED ) || Is( SMOOTHED ) || Is( BLOCKED ))
8988 return 0; // shape of simplices not changed
8989 if ( _simplices.size() < 2 )
8990 return 0; // _LayerEdge inflated along EDGE or FACE
8992 if ( Is( DIFFICULT )) // || Is( ON_CONCAVE_FACE )
8995 const gp_XYZ& curPos = _pos.back();
8996 const gp_XYZ& prevPos = _pos[0]; //PrevPos();
8998 // quality metrics (orientation) of tetras around _tgtNode
9000 double vol, minVolBefore = 1e100;
9001 for ( size_t i = 0; i < _simplices.size(); ++i )
9003 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9004 minVolBefore = Min( minVolBefore, vol );
9006 int nbBad = _simplices.size() - nbOkBefore;
9008 bool bndNeedSmooth = false;
9010 nbBad = CheckNeiborsOnBoundary( 0, & bndNeedSmooth );
9014 // evaluate min angle
9015 if ( nbBad == 0 && !findBest && !bndNeedSmooth )
9017 size_t nbGoodAngles = _simplices.size();
9019 for ( size_t i = 0; i < _simplices.size(); ++i )
9021 if ( !_simplices[i].IsMinAngleOK( curPos, angle ) && angle > _minAngle )
9024 if ( nbGoodAngles == _simplices.size() )
9030 if ( Is( ON_CONCAVE_FACE ))
9033 if ( step % 2 == 0 )
9036 if ( Is( ON_CONCAVE_FACE ) && !findBest ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9038 if ( _smooFunction == _funs[ FUN_LAPLACIAN ] )
9039 _smooFunction = _funs[ FUN_CENTROIDAL ];
9041 _smooFunction = _funs[ FUN_LAPLACIAN ];
9044 // compute new position for the last _pos using different _funs
9047 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9050 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9051 else if ( _funs[ iFun ] == _smooFunction )
9052 continue; // _smooFunction again
9053 else if ( step > 1 )
9054 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9056 break; // let "easy" functions improve elements around distorted ones
9060 double delta = _curvature->lenDelta( _len );
9062 newPos += _normal * delta;
9065 double segLen = _normal * ( newPos - prevPos );
9066 if ( segLen + delta > 0 )
9067 newPos += _normal * delta;
9069 // double segLenChange = _normal * ( curPos - newPos );
9070 // newPos += 0.5 * _normal * segLenChange;
9074 double minVolAfter = 1e100;
9075 for ( size_t i = 0; i < _simplices.size(); ++i )
9077 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9078 minVolAfter = Min( minVolAfter, vol );
9081 if ( nbOkAfter < nbOkBefore )
9085 ( nbOkAfter == nbOkBefore ) &&
9086 ( minVolAfter <= minVolBefore ))
9089 nbBad = _simplices.size() - nbOkAfter;
9090 minVolBefore = minVolAfter;
9091 nbOkBefore = nbOkAfter;
9094 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9095 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9096 _pos.back() = newPos;
9098 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9099 << (nbBad ? " --BAD" : ""));
9103 continue; // look for a better function
9109 } // loop on smoothing functions
9111 if ( moved ) // notify _neibors
9114 for ( size_t i = 0; i < _neibors.size(); ++i )
9115 if ( !_neibors[i]->Is( MOVED ))
9117 _neibors[i]->Set( MOVED );
9118 toSmooth.push_back( _neibors[i] );
9125 //================================================================================
9127 * \brief Perform 'smart' 3D smooth of nodes inflated from FACE
9128 * \retval int - nb of bad simplices around this _LayerEdge
9130 //================================================================================
9132 int _LayerEdge::Smooth(const int step, const bool isConcaveFace, bool findBest )
9134 if ( !_smooFunction )
9135 return 0; // _LayerEdge inflated along EDGE or FACE
9137 return 0; // not inflated
9139 const gp_XYZ& curPos = _pos.back();
9140 const gp_XYZ& prevPos = _pos[0]; //PrevCheckPos();
9142 // quality metrics (orientation) of tetras around _tgtNode
9144 double vol, minVolBefore = 1e100;
9145 for ( size_t i = 0; i < _simplices.size(); ++i )
9147 nbOkBefore += _simplices[i].IsForward( &prevPos, &curPos, vol );
9148 minVolBefore = Min( minVolBefore, vol );
9150 int nbBad = _simplices.size() - nbOkBefore;
9152 if ( isConcaveFace ) // alternate FUN_CENTROIDAL and FUN_LAPLACIAN
9154 if ( _smooFunction == _funs[ FUN_CENTROIDAL ] && step % 2 )
9155 _smooFunction = _funs[ FUN_LAPLACIAN ];
9156 else if ( _smooFunction == _funs[ FUN_LAPLACIAN ] && !( step % 2 ))
9157 _smooFunction = _funs[ FUN_CENTROIDAL ];
9160 // compute new position for the last _pos using different _funs
9162 for ( int iFun = -1; iFun < theNbSmooFuns; ++iFun )
9165 newPos = (this->*_smooFunction)(); // fun chosen by ChooseSmooFunction()
9166 else if ( _funs[ iFun ] == _smooFunction )
9167 continue; // _smooFunction again
9168 else if ( step > 1 )
9169 newPos = (this->*_funs[ iFun ])(); // try other smoothing fun
9171 break; // let "easy" functions improve elements around distorted ones
9175 double delta = _curvature->lenDelta( _len );
9177 newPos += _normal * delta;
9180 double segLen = _normal * ( newPos - prevPos );
9181 if ( segLen + delta > 0 )
9182 newPos += _normal * delta;
9184 // double segLenChange = _normal * ( curPos - newPos );
9185 // newPos += 0.5 * _normal * segLenChange;
9189 double minVolAfter = 1e100;
9190 for ( size_t i = 0; i < _simplices.size(); ++i )
9192 nbOkAfter += _simplices[i].IsForward( &prevPos, &newPos, vol );
9193 minVolAfter = Min( minVolAfter, vol );
9196 if ( nbOkAfter < nbOkBefore )
9198 if (( isConcaveFace || findBest ) &&
9199 ( nbOkAfter == nbOkBefore ) &&
9200 ( minVolAfter <= minVolBefore )
9204 nbBad = _simplices.size() - nbOkAfter;
9205 minVolBefore = minVolAfter;
9206 nbOkBefore = nbOkAfter;
9208 SMDS_MeshNode* n = const_cast< SMDS_MeshNode* >( _nodes.back() );
9209 n->setXYZ( newPos.X(), newPos.Y(), newPos.Z());
9210 _pos.back() = newPos;
9212 dumpMoveComm( n, SMESH_Comment( _funNames[ iFun < 0 ? smooFunID() : iFun ] )
9213 << ( nbBad ? "--BAD" : ""));
9215 // commented for IPAL0052478
9216 // _len -= prevPos.Distance(SMESH_TNodeXYZ( n ));
9217 // _len += prevPos.Distance(newPos);
9219 if ( iFun > -1 ) // findBest || the chosen _fun makes worse
9221 //_smooFunction = _funs[ iFun ];
9222 // cout << "# " << _funNames[ iFun ] << "\t N:" << _nodes.back()->GetID()
9223 // << "\t nbBad: " << _simplices.size() - nbOkAfter
9224 // << " minVol: " << minVolAfter
9225 // << " " << newPos.X() << " " << newPos.Y() << " " << newPos.Z()
9227 continue; // look for a better function
9233 } // loop on smoothing functions
9238 //================================================================================
9240 * \brief Chooses a smoothing technique giving a position most close to an initial one.
9241 * For a correct result, _simplices must contain nodes lying on geometry.
9243 //================================================================================
9245 void _LayerEdge::ChooseSmooFunction( const set< TGeomID >& concaveVertices,
9246 const TNode2Edge& /*n2eMap*/)
9248 if ( _smooFunction ) return;
9250 // use smoothNefPolygon() near concaveVertices
9251 if ( !concaveVertices.empty() )
9253 _smooFunction = _funs[ FUN_CENTROIDAL ];
9255 Set( ON_CONCAVE_FACE );
9257 for ( size_t i = 0; i < _simplices.size(); ++i )
9259 if ( concaveVertices.count( _simplices[i]._nPrev->getshapeId() ))
9261 _smooFunction = _funs[ FUN_NEFPOLY ];
9263 // set FUN_CENTROIDAL to neighbor edges
9264 for ( i = 0; i < _neibors.size(); ++i )
9266 if ( _neibors[i]->_nodes[0]->GetPosition()->GetDim() == 2 )
9268 _neibors[i]->_smooFunction = _funs[ FUN_CENTROIDAL ];
9275 // // this choice is done only if ( !concaveVertices.empty() ) for Grids/smesh/bugs_19/X1
9276 // // where the nodes are smoothed too far along a sphere thus creating
9277 // // inverted _simplices
9278 // double dist[theNbSmooFuns];
9279 // //double coef[theNbSmooFuns] = { 1., 1.2, 1.4, 1.4 };
9280 // double coef[theNbSmooFuns] = { 1., 1., 1., 1. };
9282 // double minDist = Precision::Infinite();
9283 // gp_Pnt p = SMESH_TNodeXYZ( _nodes[0] );
9284 // for ( int i = 0; i < FUN_NEFPOLY; ++i )
9286 // gp_Pnt newP = (this->*_funs[i])();
9287 // dist[i] = p.SquareDistance( newP );
9288 // if ( dist[i]*coef[i] < minDist )
9290 // _smooFunction = _funs[i];
9291 // minDist = dist[i]*coef[i];
9297 _smooFunction = _funs[ FUN_LAPLACIAN ];
9300 // for ( size_t i = 0; i < _simplices.size(); ++i )
9301 // minDim = Min( minDim, _simplices[i]._nPrev->GetPosition()->GetDim() );
9302 // if ( minDim == 0 )
9303 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9304 // else if ( minDim == 1 )
9305 // _smooFunction = _funs[ FUN_CENTROIDAL ];
9309 // for ( int i = 0; i < FUN_NB; ++i )
9311 // //cout << dist[i] << " ";
9312 // if ( _smooFunction == _funs[i] ) {
9314 // //debugMsg( fNames[i] );
9318 // cout << _funNames[ iMin ] << "\t N:" << _nodes.back()->GetID() << endl;
9321 //================================================================================
9323 * \brief Returns a name of _SmooFunction
9325 //================================================================================
9327 int _LayerEdge::smooFunID( _LayerEdge::PSmooFun fun) const
9330 fun = _smooFunction;
9331 for ( int i = 0; i < theNbSmooFuns; ++i )
9332 if ( fun == _funs[i] )
9335 return theNbSmooFuns;
9338 //================================================================================
9340 * \brief Computes a new node position using Laplacian smoothing
9342 //================================================================================
9344 gp_XYZ _LayerEdge::smoothLaplacian()
9346 gp_XYZ newPos (0,0,0);
9347 for ( size_t i = 0; i < _simplices.size(); ++i )
9348 newPos += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9349 newPos /= _simplices.size();
9354 //================================================================================
9356 * \brief Computes a new node position using angular-based smoothing
9358 //================================================================================
9360 gp_XYZ _LayerEdge::smoothAngular()
9362 vector< gp_Vec > edgeDir; edgeDir. reserve( _simplices.size() + 1 );
9363 vector< double > edgeSize; edgeSize.reserve( _simplices.size() );
9364 vector< gp_XYZ > points; points. reserve( _simplices.size() + 1 );
9366 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9368 for ( size_t i = 0; i < _simplices.size(); ++i )
9370 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9371 edgeDir.push_back( p - pPrev );
9372 edgeSize.push_back( edgeDir.back().Magnitude() );
9373 if ( edgeSize.back() < numeric_limits<double>::min() )
9376 edgeSize.pop_back();
9380 edgeDir.back() /= edgeSize.back();
9381 points.push_back( p );
9386 edgeDir.push_back ( edgeDir[0] );
9387 edgeSize.push_back( edgeSize[0] );
9388 pN /= points.size();
9390 gp_XYZ newPos(0,0,0);
9392 for ( size_t i = 0; i < points.size(); ++i )
9394 gp_Vec toN = pN - points[i];
9395 double toNLen = toN.Magnitude();
9396 if ( toNLen < numeric_limits<double>::min() )
9401 gp_Vec bisec = edgeDir[i] + edgeDir[i+1];
9402 double bisecLen = bisec.SquareMagnitude();
9403 if ( bisecLen < numeric_limits<double>::min() )
9405 gp_Vec norm = edgeDir[i] ^ toN;
9406 bisec = norm ^ edgeDir[i];
9407 bisecLen = bisec.SquareMagnitude();
9409 bisecLen = Sqrt( bisecLen );
9413 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * bisecLen;
9414 sumSize += bisecLen;
9416 gp_XYZ pNew = ( points[i] + bisec.XYZ() * toNLen ) * ( edgeSize[i] + edgeSize[i+1] );
9417 sumSize += ( edgeSize[i] + edgeSize[i+1] );
9423 // project newPos to an average plane
9425 gp_XYZ norm(0,0,0); // plane normal
9426 points.push_back( points[0] );
9427 for ( size_t i = 1; i < points.size(); ++i )
9429 gp_XYZ vec1 = points[ i-1 ] - pN;
9430 gp_XYZ vec2 = points[ i ] - pN;
9431 gp_XYZ cross = vec1 ^ vec2;
9434 if ( cross * norm < numeric_limits<double>::min() )
9435 norm += cross.Reversed();
9439 catch (Standard_Failure&) { // if |cross| == 0.
9442 gp_XYZ vec = newPos - pN;
9443 double r = ( norm * vec ) / norm.SquareModulus(); // param [0,1] on norm
9444 newPos = newPos - r * norm;
9449 //================================================================================
9451 * \brief Computes a new node position using weighted node positions
9453 //================================================================================
9455 gp_XYZ _LayerEdge::smoothLengthWeighted()
9457 vector< double > edgeSize; edgeSize.reserve( _simplices.size() + 1);
9458 vector< gp_XYZ > points; points. reserve( _simplices.size() );
9460 gp_XYZ pPrev = SMESH_TNodeXYZ( _simplices.back()._nPrev );
9461 for ( size_t i = 0; i < _simplices.size(); ++i )
9463 gp_XYZ p = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9464 edgeSize.push_back( ( p - pPrev ).Modulus() );
9465 if ( edgeSize.back() < numeric_limits<double>::min() )
9467 edgeSize.pop_back();
9471 points.push_back( p );
9475 edgeSize.push_back( edgeSize[0] );
9477 gp_XYZ newPos(0,0,0);
9479 for ( size_t i = 0; i < points.size(); ++i )
9481 newPos += points[i] * ( edgeSize[i] + edgeSize[i+1] );
9482 sumSize += edgeSize[i] + edgeSize[i+1];
9488 //================================================================================
9490 * \brief Computes a new node position using angular-based smoothing
9492 //================================================================================
9494 gp_XYZ _LayerEdge::smoothCentroidal()
9496 gp_XYZ newPos(0,0,0);
9497 gp_XYZ pN = SMESH_TNodeXYZ( _nodes.back() );
9499 for ( size_t i = 0; i < _simplices.size(); ++i )
9501 gp_XYZ p1 = SMESH_TNodeXYZ( _simplices[i]._nPrev );
9502 gp_XYZ p2 = SMESH_TNodeXYZ( _simplices[i]._nNext );
9503 gp_XYZ gc = ( pN + p1 + p2 ) / 3.;
9504 double size = (( p1 - pN ) ^ ( p2 - pN )).Modulus();
9507 newPos += gc * size;
9514 //================================================================================
9516 * \brief Computes a new node position located inside a Nef polygon
9518 //================================================================================
9520 gp_XYZ _LayerEdge::smoothNefPolygon()
9521 #ifdef OLD_NEF_POLYGON
9523 gp_XYZ newPos(0,0,0);
9525 // get a plane to search a solution on
9527 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9529 const double tol = numeric_limits<double>::min();
9530 gp_XYZ center(0,0,0);
9531 for ( i = 0; i < _simplices.size(); ++i )
9533 vecs[i] = ( SMESH_TNodeXYZ( _simplices[i]._nNext ) -
9534 SMESH_TNodeXYZ( _simplices[i]._nPrev ));
9535 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9537 vecs.back() = vecs[0];
9538 center /= _simplices.size();
9540 gp_XYZ zAxis(0,0,0);
9541 for ( i = 0; i < _simplices.size(); ++i )
9542 zAxis += vecs[i] ^ vecs[i+1];
9545 for ( i = 0; i < _simplices.size(); ++i )
9548 if ( yAxis.SquareModulus() > tol )
9551 gp_XYZ xAxis = yAxis ^ zAxis;
9552 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9553 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9554 // p0.Distance( _simplices[2]._nPrev ));
9555 // gp_XYZ center = smoothLaplacian();
9556 // gp_XYZ xAxis, yAxis, zAxis;
9557 // for ( i = 0; i < _simplices.size(); ++i )
9559 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9560 // if ( xAxis.SquareModulus() > tol*tol )
9563 // for ( i = 1; i < _simplices.size(); ++i )
9565 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9566 // zAxis = xAxis ^ yAxis;
9567 // if ( zAxis.SquareModulus() > tol*tol )
9570 // if ( i == _simplices.size() ) return newPos;
9572 yAxis = zAxis ^ xAxis;
9573 xAxis /= xAxis.Modulus();
9574 yAxis /= yAxis.Modulus();
9576 // get half-planes of _simplices
9578 vector< _halfPlane > halfPlns( _simplices.size() );
9580 for ( size_t i = 0; i < _simplices.size(); ++i )
9582 gp_XYZ OP1 = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9583 gp_XYZ OP2 = SMESH_TNodeXYZ( _simplices[i]._nNext ) - center;
9584 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9585 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9586 gp_XY vec12 = p2 - p1;
9587 double dist12 = vec12.Modulus();
9591 halfPlns[ nbHP ]._pos = p1;
9592 halfPlns[ nbHP ]._dir = vec12;
9593 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9597 // intersect boundaries of half-planes, define state of intersection points
9598 // in relation to all half-planes and calculate internal point of a 2D polygon
9601 gp_XY newPos2D (0,0);
9603 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9604 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9605 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9607 vector< vector< TIntPntState > > allIntPnts( nbHP );
9608 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9610 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9611 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9613 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9614 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9617 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9619 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9621 if ( iHP1 == iHP2 ) continue;
9623 TIntPntState & ips1 = intPnts1[ iHP2 ];
9624 if ( ips1.second == UNDEF )
9626 // find an intersection point of boundaries of iHP1 and iHP2
9628 if ( iHP2 == iPrev ) // intersection with neighbors is known
9629 ips1.first = halfPlns[ iHP1 ]._pos;
9630 else if ( iHP2 == iNext )
9631 ips1.first = halfPlns[ iHP2 ]._pos;
9632 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9633 ips1.second = NO_INT;
9635 // classify the found intersection point
9636 if ( ips1.second != NO_INT )
9638 ips1.second = NOT_OUT;
9639 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9640 if ( i != iHP1 && i != iHP2 &&
9641 halfPlns[ i ].IsOut( ips1.first, tol ))
9642 ips1.second = IS_OUT;
9644 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9645 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9646 TIntPntState & ips2 = intPnts2[ iHP1 ];
9649 if ( ips1.second == NOT_OUT )
9652 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9656 // find a NOT_OUT segment of boundary which is located between
9657 // two NOT_OUT int points
9660 continue; // no such a segment
9664 // sort points along the boundary
9665 map< double, TIntPntState* > ipsByParam;
9666 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9668 TIntPntState & ips1 = intPnts1[ iHP2 ];
9669 if ( ips1.second != NO_INT )
9671 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9672 double param = op * halfPlns[ iHP1 ]._dir;
9673 ipsByParam.insert( make_pair( param, & ips1 ));
9676 // look for two neighboring NOT_OUT points
9678 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9679 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9681 TIntPntState & ips1 = *(u2ips->second);
9682 if ( ips1.second == NOT_OUT )
9683 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9684 else if ( nbNotOut >= 2 )
9691 if ( nbNotOut >= 2 )
9693 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9696 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9703 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9712 #else // OLD_NEF_POLYGON
9713 { ////////////////////////////////// NEW
9714 gp_XYZ newPos(0,0,0);
9716 // get a plane to search a solution on
9719 gp_XYZ center(0,0,0);
9720 for ( i = 0; i < _simplices.size(); ++i )
9721 center += SMESH_TNodeXYZ( _simplices[i]._nPrev );
9722 center /= _simplices.size();
9724 vector< gp_XYZ > vecs( _simplices.size() + 1 );
9725 for ( i = 0; i < _simplices.size(); ++i )
9726 vecs[i] = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9727 vecs.back() = vecs[0];
9729 const double tol = numeric_limits<double>::min();
9730 gp_XYZ zAxis(0,0,0);
9731 for ( i = 0; i < _simplices.size(); ++i )
9733 gp_XYZ cross = vecs[i] ^ vecs[i+1];
9736 if ( cross * zAxis < tol )
9737 zAxis += cross.Reversed();
9741 catch (Standard_Failure) { // if |cross| == 0.
9746 for ( i = 0; i < _simplices.size(); ++i )
9749 if ( yAxis.SquareModulus() > tol )
9752 gp_XYZ xAxis = yAxis ^ zAxis;
9753 // SMESH_TNodeXYZ p0( _simplices[0]._nPrev );
9754 // const double tol = 1e-6 * ( p0.Distance( _simplices[1]._nPrev ) +
9755 // p0.Distance( _simplices[2]._nPrev ));
9756 // gp_XYZ center = smoothLaplacian();
9757 // gp_XYZ xAxis, yAxis, zAxis;
9758 // for ( i = 0; i < _simplices.size(); ++i )
9760 // xAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9761 // if ( xAxis.SquareModulus() > tol*tol )
9764 // for ( i = 1; i < _simplices.size(); ++i )
9766 // yAxis = SMESH_TNodeXYZ( _simplices[i]._nPrev ) - center;
9767 // zAxis = xAxis ^ yAxis;
9768 // if ( zAxis.SquareModulus() > tol*tol )
9771 // if ( i == _simplices.size() ) return newPos;
9773 yAxis = zAxis ^ xAxis;
9774 xAxis /= xAxis.Modulus();
9775 yAxis /= yAxis.Modulus();
9777 // get half-planes of _simplices
9779 vector< _halfPlane > halfPlns( _simplices.size() );
9781 for ( size_t i = 0; i < _simplices.size(); ++i )
9783 const gp_XYZ& OP1 = vecs[ i ];
9784 const gp_XYZ& OP2 = vecs[ i+1 ];
9785 gp_XY p1( OP1 * xAxis, OP1 * yAxis );
9786 gp_XY p2( OP2 * xAxis, OP2 * yAxis );
9787 gp_XY vec12 = p2 - p1;
9788 double dist12 = vec12.Modulus();
9792 halfPlns[ nbHP ]._pos = p1;
9793 halfPlns[ nbHP ]._dir = vec12;
9794 halfPlns[ nbHP ]._inNorm.SetCoord( -vec12.Y(), vec12.X() );
9798 // intersect boundaries of half-planes, define state of intersection points
9799 // in relation to all half-planes and calculate internal point of a 2D polygon
9802 gp_XY newPos2D (0,0);
9804 enum { UNDEF = -1, NOT_OUT, IS_OUT, NO_INT };
9805 typedef std::pair< gp_XY, int > TIntPntState; // coord and isOut state
9806 TIntPntState undefIPS( gp_XY(1e100,1e100), UNDEF );
9808 vector< vector< TIntPntState > > allIntPnts( nbHP );
9809 for ( int iHP1 = 0; iHP1 < nbHP; ++iHP1 )
9811 vector< TIntPntState > & intPnts1 = allIntPnts[ iHP1 ];
9812 if ( intPnts1.empty() ) intPnts1.resize( nbHP, undefIPS );
9814 int iPrev = SMESH_MesherHelper::WrapIndex( iHP1 - 1, nbHP );
9815 int iNext = SMESH_MesherHelper::WrapIndex( iHP1 + 1, nbHP );
9818 const gp_XY* segEnds[2] = { 0, 0 }; // NOT_OUT points
9820 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9822 if ( iHP1 == iHP2 ) continue;
9824 TIntPntState & ips1 = intPnts1[ iHP2 ];
9825 if ( ips1.second == UNDEF )
9827 // find an intersection point of boundaries of iHP1 and iHP2
9829 if ( iHP2 == iPrev ) // intersection with neighbors is known
9830 ips1.first = halfPlns[ iHP1 ]._pos;
9831 else if ( iHP2 == iNext )
9832 ips1.first = halfPlns[ iHP2 ]._pos;
9833 else if ( !halfPlns[ iHP1 ].FindIntersection( halfPlns[ iHP2 ], ips1.first ))
9834 ips1.second = NO_INT;
9836 // classify the found intersection point
9837 if ( ips1.second != NO_INT )
9839 ips1.second = NOT_OUT;
9840 for ( int i = 0; i < nbHP && ips1.second == NOT_OUT; ++i )
9841 if ( i != iHP1 && i != iHP2 &&
9842 halfPlns[ i ].IsOut( ips1.first, tol ))
9843 ips1.second = IS_OUT;
9845 vector< TIntPntState > & intPnts2 = allIntPnts[ iHP2 ];
9846 if ( intPnts2.empty() ) intPnts2.resize( nbHP, undefIPS );
9847 TIntPntState & ips2 = intPnts2[ iHP1 ];
9850 if ( ips1.second == NOT_OUT )
9853 segEnds[ bool(segEnds[0]) ] = & ips1.first;
9857 // find a NOT_OUT segment of boundary which is located between
9858 // two NOT_OUT int points
9861 continue; // no such a segment
9865 // sort points along the boundary
9866 map< double, TIntPntState* > ipsByParam;
9867 for ( int iHP2 = 0; iHP2 < nbHP; ++iHP2 )
9869 TIntPntState & ips1 = intPnts1[ iHP2 ];
9870 if ( ips1.second != NO_INT )
9872 gp_XY op = ips1.first - halfPlns[ iHP1 ]._pos;
9873 double param = op * halfPlns[ iHP1 ]._dir;
9874 ipsByParam.insert( make_pair( param, & ips1 ));
9877 // look for two neighboring NOT_OUT points
9879 map< double, TIntPntState* >::iterator u2ips = ipsByParam.begin();
9880 for ( ; u2ips != ipsByParam.end(); ++u2ips )
9882 TIntPntState & ips1 = *(u2ips->second);
9883 if ( ips1.second == NOT_OUT )
9884 segEnds[ bool( nbNotOut++ ) ] = & ips1.first;
9885 else if ( nbNotOut >= 2 )
9892 if ( nbNotOut >= 2 )
9894 double len = ( *segEnds[0] - *segEnds[1] ).Modulus();
9897 newPos2D += 0.5 * len * ( *segEnds[0] + *segEnds[1] );
9904 newPos = center + xAxis * newPos2D.X() + yAxis * newPos2D.Y();
9913 #endif // OLD_NEF_POLYGON
9915 //================================================================================
9917 * \brief Add a new segment to _LayerEdge during inflation
9919 //================================================================================
9921 void _LayerEdge::SetNewLength( double len, _EdgesOnShape& eos, SMESH_MesherHelper& helper )
9926 if ( len > _maxLen )
9929 Block( eos.GetData() );
9931 const double lenDelta = len - _len;
9932 // if ( lenDelta < 0 )
9934 if ( lenDelta < len * 1e-3 )
9936 Block( eos.GetData() );
9940 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
9941 gp_XYZ oldXYZ = SMESH_TNodeXYZ( n );
9943 if ( eos._hyp.IsOffsetMethod() )
9947 SMDS_ElemIteratorPtr faceIt = _nodes[0]->GetInverseElementIterator( SMDSAbs_Face );
9948 while ( faceIt->more() )
9950 const SMDS_MeshElement* face = faceIt->next();
9951 if ( !eos.GetNormal( face, faceNorm ))
9954 // translate plane of a face
9955 gp_XYZ baryCenter = oldXYZ + faceNorm.XYZ() * lenDelta;
9957 // find point of intersection of the face plane located at baryCenter
9958 // and _normal located at newXYZ
9959 double d = -( faceNorm.XYZ() * baryCenter ); // d of plane equation ax+by+cz+d=0
9960 double dot = ( faceNorm.XYZ() * _normal );
9961 if ( dot < std::numeric_limits<double>::min() )
9962 dot = lenDelta * 1e-3;
9963 double step = -( faceNorm.XYZ() * newXYZ + d ) / dot;
9964 newXYZ += step * _normal;
9966 _lenFactor = _normal * ( newXYZ - oldXYZ ) / lenDelta; // _lenFactor is used in InvalidateStep()
9970 newXYZ = oldXYZ + _normal * lenDelta * _lenFactor;
9973 n->setXYZ( newXYZ.X(), newXYZ.Y(), newXYZ.Z() );
9974 _pos.push_back( newXYZ );
9976 if ( !eos._sWOL.IsNull() )
9977 if ( !UpdatePositionOnSWOL( n, 2*lenDelta, eos, helper ))
9979 n->setXYZ( oldXYZ.X(), oldXYZ.Y(), oldXYZ.Z() );
9981 Block( eos.GetData() );
9988 if ( eos.ShapeType() != TopAbs_FACE )
9990 for ( size_t i = 0; i < _neibors.size(); ++i )
9991 //if ( _len > _neibors[i]->GetSmooLen() )
9992 _neibors[i]->Set( MOVED );
9996 dumpMove( n ); //debug
10000 //================================================================================
10002 * \brief Update last position on SWOL by projecting node on SWOL
10004 //================================================================================
10006 bool _LayerEdge::UpdatePositionOnSWOL( SMDS_MeshNode* n,
10008 _EdgesOnShape& eos,
10009 SMESH_MesherHelper& helper )
10013 if ( eos.SWOLType() == TopAbs_EDGE )
10015 double u = Precision::Infinite(); // to force projection w/o distance check
10016 uvOK = helper.CheckNodeU( TopoDS::Edge( eos._sWOL ), n, u, tol, /*force=*/true, distXYZ );
10017 _pos.back().SetCoord( u, 0, 0 );
10018 if ( _nodes.size() > 1 && uvOK )
10020 SMDS_EdgePositionPtr pos = n->GetPosition();
10021 pos->SetUParameter( u );
10024 else // TopAbs_FACE
10026 gp_XY uv( Precision::Infinite(), 0 );
10027 uvOK = helper.CheckNodeUV( TopoDS::Face( eos._sWOL ), n, uv, tol, /*force=*/true, distXYZ );
10028 _pos.back().SetCoord( uv.X(), uv.Y(), 0 );
10029 if ( _nodes.size() > 1 && uvOK )
10031 SMDS_FacePositionPtr pos = n->GetPosition();
10032 pos->SetUParameter( uv.X() );
10033 pos->SetVParameter( uv.Y() );
10038 n->setXYZ( distXYZ[1], distXYZ[2], distXYZ[3]);
10043 //================================================================================
10045 * \brief Set BLOCKED flag and propagate limited _maxLen to _neibors
10047 //================================================================================
10049 void _LayerEdge::Block( _SolidData& data )
10051 //if ( Is( BLOCKED )) return;
10054 SMESH_Comment msg( "#BLOCK shape=");
10055 msg << data.GetShapeEdges( this )->_shapeID
10056 << ", nodes " << _nodes[0]->GetID() << ", " << _nodes.back()->GetID();
10057 dumpCmd( msg + " -- BEGIN");
10060 std::queue<_LayerEdge*> queue;
10061 queue.push( this );
10063 gp_Pnt pSrc, pTgt, pSrcN, pTgtN;
10064 while ( !queue.empty() )
10066 _LayerEdge* edge = queue.front(); queue.pop();
10067 pSrc = SMESH_TNodeXYZ( edge->_nodes[0] );
10068 pTgt = SMESH_TNodeXYZ( edge->_nodes.back() );
10069 for ( size_t iN = 0; iN < edge->_neibors.size(); ++iN )
10071 _LayerEdge* neibor = edge->_neibors[iN];
10072 if ( neibor->_maxLen < edge->_maxLen * 1.01 )
10074 pSrcN = SMESH_TNodeXYZ( neibor->_nodes[0] );
10075 pTgtN = SMESH_TNodeXYZ( neibor->_nodes.back() );
10076 double minDist = pSrc.SquareDistance( pSrcN );
10077 minDist = Min( pTgt.SquareDistance( pTgtN ), minDist );
10078 minDist = Min( pSrc.SquareDistance( pTgtN ), minDist );
10079 minDist = Min( pTgt.SquareDistance( pSrcN ), minDist );
10080 double newMaxLen = edge->_maxLen + 0.5 * Sqrt( minDist );
10081 //if ( edge->_nodes[0]->getshapeId() == neibor->_nodes[0]->getshapeId() ) viscous_layers_00/A3
10083 //newMaxLen *= edge->_lenFactor / neibor->_lenFactor;
10084 // newMaxLen *= Min( edge->_lenFactor / neibor->_lenFactor,
10085 // neibor->_lenFactor / edge->_lenFactor );
10087 if ( neibor->_maxLen > newMaxLen )
10089 neibor->SetMaxLen( newMaxLen );
10090 if ( neibor->_maxLen < neibor->_len )
10092 _EdgesOnShape* eos = data.GetShapeEdges( neibor );
10093 int lastStep = neibor->Is( BLOCKED ) ? 1 : 0;
10094 while ( neibor->_len > neibor->_maxLen &&
10095 neibor->NbSteps() > lastStep )
10096 neibor->InvalidateStep( neibor->NbSteps(), *eos, /*restoreLength=*/true );
10097 neibor->SetNewLength( neibor->_maxLen, *eos, data.GetHelper() );
10098 //neibor->Block( data );
10100 queue.push( neibor );
10104 dumpCmd( msg + " -- END");
10107 //================================================================================
10109 * \brief Remove last inflation step
10111 //================================================================================
10113 void _LayerEdge::InvalidateStep( size_t curStep, const _EdgesOnShape& eos, bool restoreLength )
10115 if ( _pos.size() > curStep && _nodes.size() > 1 )
10117 _pos.resize( curStep );
10119 gp_Pnt nXYZ = _pos.back();
10120 SMDS_MeshNode* n = const_cast< SMDS_MeshNode*>( _nodes.back() );
10121 SMESH_TNodeXYZ curXYZ( n );
10122 if ( !eos._sWOL.IsNull() )
10124 TopLoc_Location loc;
10125 if ( eos.SWOLType() == TopAbs_EDGE )
10127 SMDS_EdgePositionPtr pos = n->GetPosition();
10128 pos->SetUParameter( nXYZ.X() );
10130 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( eos._sWOL ), loc, f,l);
10131 nXYZ = curve->Value( nXYZ.X() ).Transformed( loc );
10135 SMDS_FacePositionPtr pos = n->GetPosition();
10136 pos->SetUParameter( nXYZ.X() );
10137 pos->SetVParameter( nXYZ.Y() );
10138 Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face(eos._sWOL), loc );
10139 nXYZ = surface->Value( nXYZ.X(), nXYZ.Y() ).Transformed( loc );
10142 n->setXYZ( nXYZ.X(), nXYZ.Y(), nXYZ.Z() );
10145 if ( restoreLength )
10147 if ( NbSteps() == 0 )
10149 else if ( IsOnFace() && Is( MOVED ))
10150 _len = ( nXYZ.XYZ() - SMESH_NodeXYZ( _nodes[0] )) * _normal;
10152 _len -= ( nXYZ.XYZ() - curXYZ ).Modulus() / _lenFactor;
10158 //================================================================================
10160 * \brief Return index of a _pos distant from _normal
10162 //================================================================================
10164 int _LayerEdge::GetSmoothedPos( const double tol )
10167 for ( size_t i = 1; i < _pos.size() && !iSmoothed; ++i )
10169 double normDist = ( _pos[i] - _pos[0] ).Crossed( _normal ).SquareModulus();
10170 if ( normDist > tol * tol )
10176 //================================================================================
10178 * \brief Smooth a path formed by _pos of a _LayerEdge smoothed on FACE
10180 //================================================================================
10182 void _LayerEdge::SmoothPos( const vector< double >& segLen, const double tol )
10184 if ( /*Is( NORMAL_UPDATED ) ||*/ _pos.size() <= 2 )
10187 // find the 1st smoothed _pos
10188 int iSmoothed = GetSmoothedPos( tol );
10189 if ( !iSmoothed ) return;
10191 gp_XYZ normal = _normal;
10192 if ( Is( NORMAL_UPDATED ))
10195 for ( size_t i = 0; i < _neibors.size(); ++i )
10197 if ( _neibors[i]->IsOnFace() )
10199 double dot = _normal * _neibors[i]->_normal;
10200 if ( dot < minDot )
10202 normal = _neibors[i]->_normal;
10207 if ( minDot == 1. )
10208 for ( size_t i = 1; i < _pos.size(); ++i )
10210 normal = _pos[i] - _pos[0];
10211 double size = normal.Modulus();
10212 if ( size > RealSmall() )
10219 const double r = 0.2;
10220 for ( int iter = 0; iter < 50; ++iter )
10223 for ( size_t i = Max( 1, iSmoothed-1-iter ); i < _pos.size()-1; ++i )
10225 gp_XYZ midPos = 0.5 * ( _pos[i-1] + _pos[i+1] );
10226 gp_XYZ newPos = ( 1-r ) * midPos + r * _pos[i];
10228 double midLen = 0.5 * ( segLen[i-1] + segLen[i+1] );
10229 double newLen = ( 1-r ) * midLen + r * segLen[i];
10230 const_cast< double& >( segLen[i] ) = newLen;
10231 // check angle between normal and (_pos[i+1], _pos[i] )
10232 gp_XYZ posDir = _pos[i+1] - _pos[i];
10233 double size = posDir.SquareModulus();
10234 if ( size > RealSmall() )
10235 minDot = Min( minDot, ( normal * posDir ) * ( normal * posDir ) / size );
10237 if ( minDot > 0.5 * 0.5 )
10243 //================================================================================
10245 * \brief Print flags
10247 //================================================================================
10249 std::string _LayerEdge::DumpFlags() const
10251 SMESH_Comment dump;
10252 for ( int flag = 1; flag < 0x1000000; flag *= 2 )
10253 if ( _flags & flag )
10255 EFlags f = (EFlags) flag;
10257 case TO_SMOOTH: dump << "TO_SMOOTH"; break;
10258 case MOVED: dump << "MOVED"; break;
10259 case SMOOTHED: dump << "SMOOTHED"; break;
10260 case DIFFICULT: dump << "DIFFICULT"; break;
10261 case ON_CONCAVE_FACE: dump << "ON_CONCAVE_FACE"; break;
10262 case BLOCKED: dump << "BLOCKED"; break;
10263 case INTERSECTED: dump << "INTERSECTED"; break;
10264 case NORMAL_UPDATED: dump << "NORMAL_UPDATED"; break;
10265 case UPD_NORMAL_CONV: dump << "UPD_NORMAL_CONV"; break;
10266 case MARKED: dump << "MARKED"; break;
10267 case MULTI_NORMAL: dump << "MULTI_NORMAL"; break;
10268 case NEAR_BOUNDARY: dump << "NEAR_BOUNDARY"; break;
10269 case SMOOTHED_C1: dump << "SMOOTHED_C1"; break;
10270 case DISTORTED: dump << "DISTORTED"; break;
10271 case RISKY_SWOL: dump << "RISKY_SWOL"; break;
10272 case SHRUNK: dump << "SHRUNK"; break;
10273 case UNUSED_FLAG: dump << "UNUSED_FLAG"; break;
10277 cout << dump << endl;
10282 //================================================================================
10284 * \brief Create layers of prisms
10286 //================================================================================
10288 bool _ViscousBuilder::refine(_SolidData& data)
10290 SMESH_MesherHelper& helper = data.GetHelper();
10291 helper.SetElementsOnShape(false);
10293 Handle(Geom_Curve) curve;
10294 Handle(ShapeAnalysis_Surface) surface;
10295 TopoDS_Edge geomEdge;
10296 TopoDS_Face geomFace;
10297 TopLoc_Location loc;
10300 vector< gp_XYZ > pos3D;
10301 bool isOnEdge, isTooConvexFace = false;
10302 TGeomID prevBaseId = -1;
10303 TNode2Edge* n2eMap = 0;
10304 TNode2Edge::iterator n2e;
10306 // Create intermediate nodes on each _LayerEdge
10308 for ( size_t iS = 0; iS < data._edgesOnShape.size(); ++iS )
10310 _EdgesOnShape& eos = data._edgesOnShape[iS];
10311 if ( eos._edges.empty() ) continue;
10313 if ( eos._edges[0]->_nodes.size() < 2 )
10314 continue; // on _noShrinkShapes
10316 // get data of a shrink shape
10318 geomEdge.Nullify(); geomFace.Nullify();
10319 curve.Nullify(); surface.Nullify();
10320 if ( !eos._sWOL.IsNull() )
10322 isOnEdge = ( eos.SWOLType() == TopAbs_EDGE );
10325 geomEdge = TopoDS::Edge( eos._sWOL );
10326 curve = BRep_Tool::Curve( geomEdge, loc, f,l);
10330 geomFace = TopoDS::Face( eos._sWOL );
10331 surface = helper.GetSurface( geomFace );
10334 else if ( eos.ShapeType() == TopAbs_FACE && eos._toSmooth )
10336 geomFace = TopoDS::Face( eos._shape );
10337 surface = helper.GetSurface( geomFace );
10338 // propagate _toSmooth back to _eosC1, which was unset in findShapesToSmooth()
10339 for ( size_t i = 0; i < eos._eosC1.size(); ++i )
10340 eos._eosC1[ i ]->_toSmooth = true;
10342 isTooConvexFace = false;
10343 if ( _ConvexFace* cf = data.GetConvexFace( eos._shapeID ))
10344 isTooConvexFace = cf->_isTooCurved;
10347 vector< double > segLen;
10348 for ( size_t i = 0; i < eos._edges.size(); ++i )
10350 _LayerEdge& edge = *eos._edges[i];
10351 if ( edge._pos.size() < 2 )
10354 // get accumulated length of segments
10355 segLen.resize( edge._pos.size() );
10357 if ( eos._sWOL.IsNull() )
10359 bool useNormal = true;
10360 bool usePos = false;
10361 bool smoothed = false;
10362 double preci = 0.1 * edge._len;
10363 if ( eos._toSmooth && edge._pos.size() > 2 )
10365 smoothed = edge.GetSmoothedPos( preci );
10369 if ( !surface.IsNull() && !isTooConvexFace ) // edge smoothed on FACE
10371 useNormal = usePos = false;
10372 gp_Pnt2d uv = helper.GetNodeUV( geomFace, edge._nodes[0] );
10373 for ( size_t j = 1; j < edge._pos.size() && !useNormal; ++j )
10375 uv = surface->NextValueOfUV( uv, edge._pos[j], preci );
10376 if ( surface->Gap() < 2. * edge._len )
10377 segLen[j] = surface->Gap();
10383 else if ( !edge.Is( _LayerEdge::NORMAL_UPDATED ))
10385 #ifndef __NODES_AT_POS
10386 useNormal = usePos = false;
10387 edge._pos[1] = edge._pos.back();
10388 edge._pos.resize( 2 );
10389 segLen.resize( 2 );
10390 segLen[ 1 ] = edge._len;
10393 if ( useNormal && edge.Is( _LayerEdge::NORMAL_UPDATED ))
10395 useNormal = usePos = false;
10396 _LayerEdge tmpEdge; // get original _normal
10397 tmpEdge._nodes.push_back( edge._nodes[0] );
10398 if ( !setEdgeData( tmpEdge, eos, helper, data ))
10401 for ( size_t j = 1; j < edge._pos.size(); ++j )
10402 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * tmpEdge._normal;
10406 for ( size_t j = 1; j < edge._pos.size(); ++j )
10407 segLen[j] = ( edge._pos[j] - edge._pos[0] ) * edge._normal;
10411 for ( size_t j = 1; j < edge._pos.size(); ++j )
10412 segLen[j] = segLen[j-1] + ( edge._pos[j-1] - edge._pos[j] ).Modulus();
10416 bool swapped = ( edge._pos.size() > 2 );
10420 for ( size_t j = 1; j < edge._pos.size()-1; ++j )
10421 if ( segLen[j] > segLen.back() )
10423 segLen.erase( segLen.begin() + j );
10424 edge._pos.erase( edge._pos.begin() + j );
10427 else if ( segLen[j] < segLen[j-1] )
10429 std::swap( segLen[j], segLen[j-1] );
10430 std::swap( edge._pos[j], edge._pos[j-1] );
10435 // smooth a path formed by edge._pos
10436 #ifndef __NODES_AT_POS
10437 if (( smoothed ) /*&&
10438 ( eos.ShapeType() == TopAbs_FACE || edge.Is( _LayerEdge::SMOOTHED_C1 ))*/)
10439 edge.SmoothPos( segLen, preci );
10442 else if ( eos._isRegularSWOL ) // usual SWOL
10444 if ( edge.Is( _LayerEdge::SMOOTHED ))
10446 SMESH_NodeXYZ p0( edge._nodes[0] );
10447 for ( size_t j = 1; j < edge._pos.size(); ++j )
10449 gp_XYZ pj = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10450 segLen[j] = ( pj - p0 ) * edge._normal;
10455 for ( size_t j = 1; j < edge._pos.size(); ++j )
10456 segLen[j] = segLen[j-1] + (edge._pos[j-1] - edge._pos[j] ).Modulus();
10459 else // SWOL is surface with singularities or irregularly parametrized curve
10461 pos3D.resize( edge._pos.size() );
10463 if ( !surface.IsNull() )
10464 for ( size_t j = 0; j < edge._pos.size(); ++j )
10465 pos3D[j] = surface->Value( edge._pos[j].X(), edge._pos[j].Y() ).XYZ();
10466 else if ( !curve.IsNull() )
10467 for ( size_t j = 0; j < edge._pos.size(); ++j )
10468 pos3D[j] = curve->Value( edge._pos[j].X() ).XYZ();
10470 for ( size_t j = 1; j < edge._pos.size(); ++j )
10471 segLen[j] = segLen[j-1] + ( pos3D[j-1] - pos3D[j] ).Modulus();
10474 // allocate memory for new nodes if it is not yet refined
10475 const SMDS_MeshNode* tgtNode = edge._nodes.back();
10476 if ( edge._nodes.size() == 2 )
10478 #ifdef __NODES_AT_POS
10479 int nbNodes = edge._pos.size();
10481 int nbNodes = eos._hyp.GetNumberLayers() + 1;
10483 edge._nodes.resize( nbNodes, 0 );
10484 edge._nodes[1] = 0;
10485 edge._nodes.back() = tgtNode;
10487 // restore shapePos of the last node by already treated _LayerEdge of another _SolidData
10488 const TGeomID baseShapeId = edge._nodes[0]->getshapeId();
10489 if ( baseShapeId != prevBaseId )
10491 map< TGeomID, TNode2Edge* >::iterator s2ne = data._s2neMap.find( baseShapeId );
10492 n2eMap = ( s2ne == data._s2neMap.end() ) ? 0 : s2ne->second;
10493 prevBaseId = baseShapeId;
10495 _LayerEdge* edgeOnSameNode = 0;
10496 bool useExistingPos = false;
10497 if ( n2eMap && (( n2e = n2eMap->find( edge._nodes[0] )) != n2eMap->end() ))
10499 edgeOnSameNode = n2e->second;
10500 useExistingPos = ( edgeOnSameNode->_len < edge._len ||
10501 segLen[0] == segLen.back() ); // too short inflation step (bos #20643)
10502 const gp_XYZ& otherTgtPos = edgeOnSameNode->_pos.back();
10503 SMDS_PositionPtr lastPos = tgtNode->GetPosition();
10506 SMDS_EdgePositionPtr epos = lastPos;
10507 epos->SetUParameter( otherTgtPos.X() );
10511 SMDS_FacePositionPtr fpos = lastPos;
10512 fpos->SetUParameter( otherTgtPos.X() );
10513 fpos->SetVParameter( otherTgtPos.Y() );
10517 // create intermediate nodes
10518 const double h0 = eos._hyp.Get1stLayerThickness( segLen.back() );
10519 const double zeroLen = std::numeric_limits<double>::min();
10520 double hSum = 0, hi = h0/eos._hyp.GetStretchFactor();
10522 for ( size_t iStep = 1; iStep < edge._nodes.size(); ++iStep )
10524 // compute an intermediate position
10525 hi *= eos._hyp.GetStretchFactor();
10527 while ( hSum > segLen[iSeg] && iSeg < segLen.size()-1 )
10529 int iPrevSeg = iSeg-1;
10530 while ( fabs( segLen[iPrevSeg] - segLen[iSeg]) <= zeroLen && iPrevSeg > 0 )
10532 double r = ( segLen[iSeg] - hSum ) / ( segLen[iSeg] - segLen[iPrevSeg] );
10533 gp_Pnt pos = r * edge._pos[iPrevSeg] + (1-r) * edge._pos[iSeg];
10534 #ifdef __NODES_AT_POS
10535 pos = edge._pos[ iStep ];
10537 SMDS_MeshNode*& node = const_cast< SMDS_MeshNode*& >( edge._nodes[ iStep ]);
10538 if ( !eos._sWOL.IsNull() )
10540 // compute XYZ by parameters <pos>
10545 pos = curve->Value( u ).Transformed(loc);
10547 else if ( eos._isRegularSWOL )
10549 uv.SetCoord( pos.X(), pos.Y() );
10551 pos = surface->Value( pos.X(), pos.Y() );
10555 uv.SetCoord( pos.X(), pos.Y() );
10556 gp_Pnt p = r * pos3D[ iPrevSeg ] + (1-r) * pos3D[ iSeg ];
10557 uv = surface->NextValueOfUV( uv, p, BRep_Tool::Tolerance( geomFace )).XY();
10559 pos = surface->Value( uv );
10562 // create or update the node
10565 node = helper.AddNode( pos.X(), pos.Y(), pos.Z());
10566 if ( !eos._sWOL.IsNull() )
10569 getMeshDS()->SetNodeOnEdge( node, geomEdge, u );
10571 getMeshDS()->SetNodeOnFace( node, geomFace, uv.X(), uv.Y() );
10575 getMeshDS()->SetNodeInVolume( node, helper.GetSubShapeID() );
10580 if ( !eos._sWOL.IsNull() )
10582 // make average pos from new and current parameters
10585 //u = 0.5 * ( u + helper.GetNodeU( geomEdge, node ));
10586 if ( useExistingPos )
10587 u = helper.GetNodeU( geomEdge, node );
10588 pos = curve->Value( u ).Transformed(loc);
10590 SMDS_EdgePositionPtr epos = node->GetPosition();
10591 epos->SetUParameter( u );
10595 //uv = 0.5 * ( uv + helper.GetNodeUV( geomFace, node ));
10596 if ( useExistingPos )
10597 uv = helper.GetNodeUV( geomFace, node );
10598 pos = surface->Value( uv );
10600 SMDS_FacePositionPtr fpos = node->GetPosition();
10601 fpos->SetUParameter( uv.X() );
10602 fpos->SetVParameter( uv.Y() );
10605 node->setXYZ( pos.X(), pos.Y(), pos.Z() );
10607 } // loop on edge._nodes
10609 if ( !eos._sWOL.IsNull() ) // prepare for shrink()
10612 edge._pos.back().SetCoord( u, 0,0);
10614 edge._pos.back().SetCoord( uv.X(), uv.Y() ,0);
10616 if ( edgeOnSameNode )
10617 edgeOnSameNode->_pos.back() = edge._pos.back();
10620 } // loop on eos._edges to create nodes
10623 if ( !getMeshDS()->IsEmbeddedMode() )
10624 // Log node movement
10625 for ( size_t i = 0; i < eos._edges.size(); ++i )
10627 SMESH_TNodeXYZ p ( eos._edges[i]->_nodes.back() );
10628 getMeshDS()->MoveNode( p._node, p.X(), p.Y(), p.Z() );
10635 helper.SetElementsOnShape(true);
10637 vector< vector<const SMDS_MeshNode*>* > nnVec;
10638 set< vector<const SMDS_MeshNode*>* > nnSet;
10639 set< int > degenEdgeInd;
10640 vector<const SMDS_MeshElement*> degenVols;
10642 TopExp_Explorer exp( data._solid, TopAbs_FACE );
10643 for ( ; exp.More(); exp.Next() )
10645 const TGeomID faceID = getMeshDS()->ShapeToIndex( exp.Current() );
10646 if ( data._ignoreFaceIds.count( faceID ))
10648 _EdgesOnShape* eos = data.GetShapeEdges( faceID );
10649 SMDS_MeshGroup* group = StdMeshers_ViscousLayers::CreateGroup( eos->_hyp.GetGroupName(),
10652 std::vector< const SMDS_MeshElement* > vols;
10653 const bool isReversedFace = data._reversedFaceIds.count( faceID );
10654 SMESHDS_SubMesh* fSubM = getMeshDS()->MeshElements( exp.Current() );
10655 SMDS_ElemIteratorPtr fIt = fSubM->GetElements();
10656 while ( fIt->more() )
10658 const SMDS_MeshElement* face = fIt->next();
10659 const int nbNodes = face->NbCornerNodes();
10660 nnVec.resize( nbNodes );
10662 degenEdgeInd.clear();
10663 size_t maxZ = 0, minZ = std::numeric_limits<size_t>::max();
10664 SMDS_NodeIteratorPtr nIt = face->nodeIterator();
10665 for ( int iN = 0; iN < nbNodes; ++iN )
10667 const SMDS_MeshNode* n = nIt->next();
10668 _LayerEdge* edge = data._n2eMap[ n ];
10669 const int i = isReversedFace ? nbNodes-1-iN : iN;
10670 nnVec[ i ] = & edge->_nodes;
10671 maxZ = std::max( maxZ, nnVec[ i ]->size() );
10672 minZ = std::min( minZ, nnVec[ i ]->size() );
10674 if ( helper.HasDegeneratedEdges() )
10675 nnSet.insert( nnVec[ i ]);
10680 if ( 0 < nnSet.size() && nnSet.size() < 3 )
10684 const SMDS_MeshElement* vol;
10691 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10693 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1], (*nnVec[2])[iZ-1],
10694 (*nnVec[0])[iZ], (*nnVec[1])[iZ], (*nnVec[2])[iZ]);
10695 vols.push_back( vol );
10698 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10700 for ( int iN = 0; iN < nbNodes; ++iN )
10701 if ( nnVec[ iN ]->size() < iZ+1 )
10702 degenEdgeInd.insert( iN );
10704 if ( degenEdgeInd.size() == 1 ) // PYRAM
10706 int i2 = *degenEdgeInd.begin();
10707 int i0 = helper.WrapIndex( i2 - 1, nbNodes );
10708 int i1 = helper.WrapIndex( i2 + 1, nbNodes );
10709 vol = helper.AddVolume( (*nnVec[i0])[iZ-1], (*nnVec[i1])[iZ-1],
10710 (*nnVec[i1])[iZ ], (*nnVec[i0])[iZ ], (*nnVec[i2]).back());
10711 vols.push_back( vol );
10715 int i3 = !degenEdgeInd.count(0) ? 0 : !degenEdgeInd.count(1) ? 1 : 2;
10716 vol = helper.AddVolume( (*nnVec[ 0 ])[ i3 == 0 ? iZ-1 : nnVec[0]->size()-1 ],
10717 (*nnVec[ 1 ])[ i3 == 1 ? iZ-1 : nnVec[1]->size()-1 ],
10718 (*nnVec[ 2 ])[ i3 == 2 ? iZ-1 : nnVec[2]->size()-1 ],
10719 (*nnVec[ i3 ])[ iZ ]);
10720 vols.push_back( vol );
10728 for ( size_t iZ = 1; iZ < minZ; ++iZ )
10730 vol = helper.AddVolume( (*nnVec[0])[iZ-1], (*nnVec[1])[iZ-1],
10731 (*nnVec[2])[iZ-1], (*nnVec[3])[iZ-1],
10732 (*nnVec[0])[iZ], (*nnVec[1])[iZ],
10733 (*nnVec[2])[iZ], (*nnVec[3])[iZ]);
10734 vols.push_back( vol );
10737 for ( size_t iZ = minZ; iZ < maxZ; ++iZ )
10739 for ( int iN = 0; iN < nbNodes; ++iN )
10740 if ( nnVec[ iN ]->size() < iZ+1 )
10741 degenEdgeInd.insert( iN );
10743 switch ( degenEdgeInd.size() )
10747 int i2 = *degenEdgeInd.begin();
10748 int i3 = *degenEdgeInd.rbegin();
10749 bool ok = ( i3 - i2 == 1 );
10750 if ( i2 == 0 && i3 == 3 ) { i2 = 3; i3 = 0; ok = true; }
10751 int i0 = helper.WrapIndex( i3 + 1, nbNodes );
10752 int i1 = helper.WrapIndex( i0 + 1, nbNodes );
10754 vol = helper.AddVolume( nnVec[i3]->back(), (*nnVec[i0])[iZ], (*nnVec[i0])[iZ-1],
10755 nnVec[i2]->back(), (*nnVec[i1])[iZ], (*nnVec[i1])[iZ-1]);
10756 vols.push_back( vol );
10758 degenVols.push_back( vol );
10762 default: // degen HEX
10764 vol = helper.AddVolume( nnVec[0]->size() > iZ-1 ? (*nnVec[0])[iZ-1] : nnVec[0]->back(),
10765 nnVec[1]->size() > iZ-1 ? (*nnVec[1])[iZ-1] : nnVec[1]->back(),
10766 nnVec[2]->size() > iZ-1 ? (*nnVec[2])[iZ-1] : nnVec[2]->back(),
10767 nnVec[3]->size() > iZ-1 ? (*nnVec[3])[iZ-1] : nnVec[3]->back(),
10768 nnVec[0]->size() > iZ ? (*nnVec[0])[iZ] : nnVec[0]->back(),
10769 nnVec[1]->size() > iZ ? (*nnVec[1])[iZ] : nnVec[1]->back(),
10770 nnVec[2]->size() > iZ ? (*nnVec[2])[iZ] : nnVec[2]->back(),
10771 nnVec[3]->size() > iZ ? (*nnVec[3])[iZ] : nnVec[3]->back());
10772 vols.push_back( vol );
10773 degenVols.push_back( vol );
10780 return error("Not supported type of element", data._index);
10782 } // switch ( nbNodes )
10785 for ( size_t i = 0; i < vols.size(); ++i )
10786 group->Add( vols[ i ]);
10788 } // while ( fIt->more() )
10791 if ( !degenVols.empty() )
10793 SMESH_ComputeErrorPtr& err = _mesh->GetSubMesh( data._solid )->GetComputeError();
10794 if ( !err || err->IsOK() )
10796 SMESH_BadInputElements* badElems =
10797 new SMESH_BadInputElements( getMeshDS(), COMPERR_WARNING, "Bad quality volumes created" );
10798 badElems->myBadElements.insert( badElems->myBadElements.end(),
10799 degenVols.begin(),degenVols.end() );
10800 err.reset( badElems );
10807 namespace VISCOUS_3D
10810 //--------------------------------------------------------------------------------
10812 * \brief Pair of periodic FACEs
10814 struct PeriodicFaces
10816 typedef StdMeshers_ProjectionUtils::TrsfFinder3D Trsf;
10818 ShrinkFace* _shriFace[2];
10819 TNodeNodeMap _nnMap;
10822 PeriodicFaces( ShrinkFace* sf1, ShrinkFace* sf2 ): _shriFace{ sf1, sf2 } {}
10823 bool IncludeShrunk( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces ) const;
10824 bool MoveNodes( const TopoDS_Face& tgtFace );
10825 void Clear() { _nnMap.clear(); }
10826 bool IsEmpty() const { return _nnMap.empty(); }
10829 //--------------------------------------------------------------------------------
10831 * \brief Shrink FACE data used to find periodic FACEs
10835 // ................................................................................
10836 struct BndPart //!< part of FACE boundary, either shrink or no-shrink
10838 bool _isShrink, _isReverse;
10841 std::vector< SMESH_NodeXYZ > _nodes;
10842 TopAbs_ShapeEnum _vertSWOLType[2]; // shrink part includes VERTEXes
10843 AverageHyp* _vertHyp[2];
10846 _isShrink(0), _isReverse(0), _nbSegments(0), _hyp(0),
10847 _vertSWOLType{ TopAbs_WIRE, TopAbs_WIRE }, _vertHyp{ 0, 0 }
10850 bool operator==( const BndPart& other ) const
10852 return ( _isShrink == other._isShrink &&
10853 _nbSegments == other._nbSegments &&
10854 _nodes.size() == other._nodes.size() &&
10855 vertSWOLType1() == other.vertSWOLType1() &&
10856 vertSWOLType2() == other.vertSWOLType2() &&
10858 ( *_hyp == *other._hyp &&
10859 vertHyp1() == other.vertHyp1() &&
10860 vertHyp2() == other.vertHyp2() ))
10863 bool CanAppend( const BndPart& other )
10865 return ( _isShrink == other._isShrink &&
10867 ( *_hyp == *other._hyp &&
10868 *_hyp == vertHyp2() &&
10869 vertHyp2() == other.vertHyp1() ))
10872 void Append( const BndPart& other )
10874 _nbSegments += other._nbSegments;
10875 bool hasCommonNode = ( _nodes.back()->GetID() == other._nodes.front()->GetID() );
10876 _nodes.insert( _nodes.end(), other._nodes.begin() + hasCommonNode, other._nodes.end() );
10877 _vertSWOLType[1] = other._vertSWOLType[1];
10879 _vertHyp[1] = other._vertHyp[1];
10881 const SMDS_MeshNode* Node(size_t i) const
10883 return _nodes[ _isReverse ? ( _nodes.size() - 1 - i ) : i ]._node;
10885 void Reverse() { _isReverse = !_isReverse; }
10886 const TopAbs_ShapeEnum& vertSWOLType1() const { return _vertSWOLType[ _isReverse ]; }
10887 const TopAbs_ShapeEnum& vertSWOLType2() const { return _vertSWOLType[ !_isReverse ]; }
10888 const AverageHyp& vertHyp1() const { return *(_vertHyp[ _isReverse ]); }
10889 const AverageHyp& vertHyp2() const { return *(_vertHyp[ !_isReverse ]); }
10891 // ................................................................................
10893 SMESH_subMesh* _subMesh;
10894 _SolidData* _data1;
10895 _SolidData* _data2;
10897 std::list< BndPart > _boundary;
10898 int _boundarySize, _nbBoundaryParts;
10900 void Init( SMESH_subMesh* sm, _SolidData* sd1, _SolidData* sd2 )
10902 _subMesh = sm; _data1 = sd1; _data2 = sd2;
10904 bool IsSame( const TopoDS_Face& face ) const
10906 return _subMesh->GetSubShape().IsSame( face );
10908 bool IsShrunk( const TopTools_MapOfShape& shrunkFaces ) const
10910 return shrunkFaces.Contains( _subMesh->GetSubShape() );
10913 //================================================================================
10915 * Check if meshes on two FACEs are equal
10917 bool IsPeriodic( ShrinkFace& other, PeriodicFaces& periodic )
10919 if ( !IsSameNbElements( other ))
10922 this->SetBoundary();
10923 other.SetBoundary();
10924 if ( this->_boundarySize != other._boundarySize ||
10925 this->_nbBoundaryParts != other._nbBoundaryParts )
10928 for ( int isReverse = 0; isReverse < 2; ++isReverse )
10931 Reverse( _boundary );
10933 // check boundaries
10934 bool equalBoundary = false;
10935 for ( int iP = 0; iP < _nbBoundaryParts && !equalBoundary; ++iP )
10937 if ( ! ( equalBoundary = ( this->_boundary == other._boundary )))
10938 // set first part at end
10939 _boundary.splice( _boundary.end(), _boundary, _boundary.begin() );
10941 if ( !equalBoundary )
10944 // check connectivity
10945 std::set<const SMDS_MeshElement*> elemsThis, elemsOther;
10946 this->GetElements( elemsThis );
10947 other.GetElements( elemsOther );
10948 SMESH_MeshEditor::Sew_Error err =
10949 SMESH_MeshEditor::FindMatchingNodes( elemsThis, elemsOther,
10950 this->_boundary.front().Node(0),
10951 other._boundary.front().Node(0),
10952 this->_boundary.front().Node(1),
10953 other._boundary.front().Node(1),
10955 if ( err != SMESH_MeshEditor::SEW_OK )
10958 // check node positions
10959 std::vector< gp_XYZ > srcPnts, tgtPnts;
10960 this->GetBoundaryPoints( srcPnts );
10961 other.GetBoundaryPoints( tgtPnts );
10962 if ( !periodic._trsf.Solve( srcPnts, tgtPnts )) {
10965 double tol = std::numeric_limits<double>::max(); // tolerance by segment size
10966 for ( size_t i = 1; i < srcPnts.size(); ++i ) {
10967 tol = Min( tol, ( srcPnts[i-1] - srcPnts[i] ).SquareModulus() );
10969 tol = 0.01 * Sqrt( tol );
10970 for ( BndPart& boundary : _boundary ) { // tolerance by VL thickness
10971 if ( boundary._isShrink )
10972 tol = Min( tol, boundary._hyp->Get1stLayerThickness() / 50. );
10974 bool nodeCoincide = true;
10975 TNodeNodeMap::iterator n2n = periodic._nnMap.begin();
10976 for ( ; n2n != periodic._nnMap.end() && nodeCoincide; ++n2n )
10978 SMESH_NodeXYZ nSrc = n2n->first;
10979 SMESH_NodeXYZ nTgt = n2n->second;
10980 gp_XYZ pTgt = periodic._trsf.Transform( nSrc );
10981 nodeCoincide = (( pTgt - nTgt ).SquareModulus() < tol * tol );
10983 if ( nodeCoincide )
10989 bool IsSameNbElements( ShrinkFace& other ) // check number of mesh faces
10991 SMESHDS_SubMesh* sm1 = this->_subMesh->GetSubMeshDS();
10992 SMESHDS_SubMesh* sm2 = other._subMesh->GetSubMeshDS();
10993 return ( sm1->NbElements() == sm2->NbElements() &&
10994 sm1->NbNodes() == sm2->NbNodes() );
10997 void Reverse( std::list< BndPart >& boundary )
10999 boundary.reverse();
11000 for ( std::list< BndPart >::iterator part = boundary.begin(); part != boundary.end(); ++part )
11006 if ( !_boundary.empty() )
11009 TopoDS_Face F = TopoDS::Face( _subMesh->GetSubShape() );
11010 if ( F.Orientation() >= TopAbs_INTERNAL ) F.Orientation( TopAbs_FORWARD );
11011 std::list< TopoDS_Edge > edges;
11012 std::list< int > nbEdgesInWire;
11013 /*int nbWires =*/ SMESH_Block::GetOrderedEdges (F, edges, nbEdgesInWire);
11015 // std::list< TopoDS_Edge >::iterator edgesEnd = edges.end();
11016 // if ( nbWires > 1 ) {
11017 // edgesEnd = edges.begin();
11018 // std::advance( edgesEnd, nbEdgesInWire.front() );
11020 StdMeshers_FaceSide fSide( F, edges, _subMesh->GetFather(),
11021 /*fwd=*/true, /*skipMedium=*/true );
11022 _boundarySize = fSide.NbSegments();
11024 //TopoDS_Vertex vv[2];
11025 //std::list< TopoDS_Edge >::iterator edgeIt = edges.begin();
11026 for ( int iE = 0; iE < nbEdgesInWire.front(); ++iE )
11029 _EdgesOnShape* eos = _data1->GetShapeEdges( fSide.EdgeID( iE ));
11031 bndPart._isShrink = ( eos->SWOLType() == TopAbs_FACE );
11032 if ( bndPart._isShrink )
11033 if (( _data1->_noShrinkShapes.count( eos->_shapeID )) ||
11034 ( _data2 && _data2->_noShrinkShapes.count( eos->_shapeID )))
11035 bndPart._isShrink = false;
11037 if ( bndPart._isShrink )
11039 bndPart._hyp = & eos->_hyp;
11040 _EdgesOnShape* eov[2] = { _data1->GetShapeEdges( fSide.FirstVertex( iE )),
11041 _data1->GetShapeEdges( fSide.LastVertex ( iE )) };
11042 for ( int iV = 0; iV < 2; ++iV )
11044 bndPart._vertHyp [iV] = & eov[iV]->_hyp;
11045 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11046 if ( _data1->_noShrinkShapes.count( eov[iV]->_shapeID ))
11047 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11048 if ( _data2 && bndPart._vertSWOLType[iV] != TopAbs_SHAPE )
11050 eov[iV] = _data2->GetShapeEdges( iV ? fSide.LastVertex(iE) : fSide.FirstVertex(iE ));
11051 if ( _data2->_noShrinkShapes.count( eov[iV]->_shapeID ))
11052 bndPart._vertSWOLType[iV] = TopAbs_SHAPE;
11053 else if ( eov[iV]->SWOLType() > bndPart._vertSWOLType[iV] )
11054 bndPart._vertSWOLType[iV] = eov[iV]->SWOLType();
11058 std::vector<const SMDS_MeshNode*> nodes = fSide.GetOrderedNodes( iE );
11059 bndPart._nodes.assign( nodes.begin(), nodes.end() );
11060 bndPart._nbSegments = bndPart._nodes.size() - 1;
11062 if ( _boundary.empty() || ! _boundary.back().CanAppend( bndPart ))
11063 _boundary.push_back( bndPart );
11065 _boundary.back().Append( bndPart );
11068 _nbBoundaryParts = _boundary.size();
11069 if ( _nbBoundaryParts > 1 && _boundary.front()._isShrink == _boundary.back()._isShrink )
11071 _boundary.back().Append( _boundary.front() );
11072 _boundary.pop_front();
11073 --_nbBoundaryParts;
11077 void GetElements( std::set<const SMDS_MeshElement*>& theElems)
11079 if ( SMESHDS_SubMesh* sm = _subMesh->GetSubMeshDS() )
11080 for ( SMDS_ElemIteratorPtr fIt = sm->GetElements(); fIt->more(); )
11081 theElems.insert( theElems.end(), fIt->next() );
11086 void GetBoundaryPoints( std::vector< gp_XYZ >& points )
11088 points.reserve( _boundarySize );
11089 size_t nb = _boundary.rbegin()->_nodes.size();
11090 smIdType lastID = _boundary.rbegin()->Node( nb - 1 )->GetID();
11091 std::list< BndPart >::const_iterator part = _boundary.begin();
11092 for ( ; part != _boundary.end(); ++part )
11094 size_t nb = part->_nodes.size();
11096 size_t iR = nb - 1;
11097 size_t* i = part->_isReverse ? &iR : &iF;
11098 if ( part->_nodes[ *i ]->GetID() == lastID )
11100 for ( ; iF < nb; ++iF, --iR )
11101 points.push_back( part->_nodes[ *i ]);
11103 lastID = part->_nodes[ *i ]->GetID();
11106 }; // struct ShrinkFace
11108 //--------------------------------------------------------------------------------
11110 * \brief Periodic FACEs
11114 std::vector< ShrinkFace > _shrinkFaces;
11115 std::vector< PeriodicFaces > _periodicFaces;
11117 PeriodicFaces* GetPeriodic( const TopoDS_Face& face, const TopTools_MapOfShape& shrunkFaces )
11119 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11120 if ( _periodicFaces[ i ].IncludeShrunk( face, shrunkFaces ))
11121 return & _periodicFaces[ i ];
11124 void ClearPeriodic( const TopoDS_Face& face )
11126 for ( size_t i = 0; i < _periodicFaces.size(); ++i )
11127 if ( _periodicFaces[ i ]._shriFace[0]->IsSame( face ) ||
11128 _periodicFaces[ i ]._shriFace[1]->IsSame( face ))
11129 _periodicFaces[ i ].Clear();
11133 //================================================================================
11135 * Check if a pair includes the given FACE and the other FACE is already shrunk
11137 bool PeriodicFaces::IncludeShrunk( const TopoDS_Face& face,
11138 const TopTools_MapOfShape& shrunkFaces ) const
11140 if ( IsEmpty() ) return false;
11141 return (( _shriFace[0]->IsSame( face ) && _shriFace[1]->IsShrunk( shrunkFaces )) ||
11142 ( _shriFace[1]->IsSame( face ) && _shriFace[0]->IsShrunk( shrunkFaces )));
11145 //================================================================================
11147 * Make equal meshes on periodic faces by moving corresponding nodes
11149 bool PeriodicFaces::MoveNodes( const TopoDS_Face& tgtFace )
11151 int iTgt = _shriFace[1]->IsSame( tgtFace );
11152 int iSrc = 1 - iTgt;
11154 _SolidData* dataSrc = _shriFace[iSrc]->_data1;
11155 _SolidData* dataTgt = _shriFace[iTgt]->_data1;
11157 Trsf * trsf = & _trsf, trsfInverse;
11160 trsfInverse = _trsf;
11161 if ( !trsfInverse.Invert())
11163 trsf = &trsfInverse;
11165 SMESHDS_Mesh* meshDS = dataSrc->GetHelper().GetMeshDS();
11167 TNode2Edge::iterator n2e;
11168 TNodeNodeMap::iterator n2n = _nnMap.begin();
11169 for ( ; n2n != _nnMap.end(); ++n2n )
11171 const SMDS_MeshNode* const* nn = & n2n->first;
11172 const SMDS_MeshNode* nSrc = nn[ iSrc ];
11173 const SMDS_MeshNode* nTgt = nn[ iTgt ];
11175 if (( nSrc->GetPosition()->GetDim() == 2 ) ||
11176 (( n2e = dataSrc->_n2eMap.find( nSrc )) == dataSrc->_n2eMap.end() ))
11178 SMESH_NodeXYZ pSrc = nSrc;
11179 gp_XYZ pTgt = trsf->Transform( pSrc );
11180 meshDS->MoveNode( nTgt, pTgt.X(), pTgt.Y(), pTgt.Z() );
11184 _LayerEdge* leSrc = n2e->second;
11185 n2e = dataTgt->_n2eMap.find( nTgt );
11186 if ( n2e == dataTgt->_n2eMap.end() )
11188 _LayerEdge* leTgt = n2e->second;
11189 if ( leSrc->_nodes.size() != leTgt->_nodes.size() )
11191 for ( size_t iN = 1; iN < leSrc->_nodes.size(); ++iN )
11193 SMESH_NodeXYZ pSrc = leSrc->_nodes[ iN ];
11194 gp_XYZ pTgt = trsf->Transform( pSrc );
11195 meshDS->MoveNode( leTgt->_nodes[ iN ], pTgt.X(), pTgt.Y(), pTgt.Z() );
11199 bool done = ( n2n == _nnMap.end() );
11200 debugMsg( "PeriodicFaces::MoveNodes "
11201 << _shriFace[iSrc]->_subMesh->GetId() << " -> "
11202 << _shriFace[iTgt]->_subMesh->GetId() << " -- "
11203 << ( done ? "DONE" : "FAIL"));
11207 } // namespace VISCOUS_3D; Periodicity part
11210 //================================================================================
11212 * \brief Find FACEs to shrink, that are equally meshed before shrink (i.e. periodic)
11213 * and should remain equal after shrink
11215 //================================================================================
11217 void _ViscousBuilder::findPeriodicFaces()
11219 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11220 // _LayerEdge's inflated along FACE or EDGE)
11221 std::map< TGeomID, std::list< _SolidData* > > id2sdMap;
11222 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11224 _SolidData& data = _sdVec[i];
11225 std::map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11226 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11227 if ( s2s->second.ShapeType() == TopAbs_FACE )
11228 id2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11231 _periodicity.reset( new Periodicity );
11232 _periodicity->_shrinkFaces.resize( id2sdMap.size() );
11234 std::map< TGeomID, std::list< _SolidData* > >::iterator id2sdIt = id2sdMap.begin();
11235 for ( size_t i = 0; i < id2sdMap.size(); ++i, ++id2sdIt )
11237 _SolidData* sd1 = id2sdIt->second.front();
11238 _SolidData* sd2 = id2sdIt->second.back();
11239 _periodicity->_shrinkFaces[ i ].Init( _mesh->GetSubMeshContaining( id2sdIt->first ), sd1, sd2 );
11242 for ( size_t i1 = 0; i1 < _periodicity->_shrinkFaces.size(); ++i1 )
11243 for ( size_t i2 = i1 + 1; i2 < _periodicity->_shrinkFaces.size(); ++i2 )
11245 PeriodicFaces pf( & _periodicity->_shrinkFaces[ i1 ],
11246 & _periodicity->_shrinkFaces[ i2 ]);
11247 if ( pf._shriFace[0]->IsPeriodic( *pf._shriFace[1], pf ))
11249 _periodicity->_periodicFaces.push_back( pf );
11255 //================================================================================
11257 * \brief Shrink 2D mesh on faces to let space for inflated layers
11259 //================================================================================
11261 bool _ViscousBuilder::shrink(_SolidData& theData)
11263 // make map of (ids of FACEs to shrink mesh on) to (list of _SolidData containing
11264 // _LayerEdge's inflated along FACE or EDGE)
11265 map< TGeomID, list< _SolidData* > > f2sdMap;
11266 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11268 _SolidData& data = _sdVec[i];
11269 map< TGeomID, TopoDS_Shape >::iterator s2s = data._shrinkShape2Shape.begin();
11270 for (; s2s != data._shrinkShape2Shape.end(); ++s2s )
11271 if ( s2s->second.ShapeType() == TopAbs_FACE && !_shrunkFaces.Contains( s2s->second ))
11273 f2sdMap[ getMeshDS()->ShapeToIndex( s2s->second )].push_back( &data );
11275 // Put mesh faces on the shrunk FACE to the proxy sub-mesh to avoid
11276 // usage of mesh faces made in addBoundaryElements() by the 3D algo or
11277 // by StdMeshers_QuadToTriaAdaptor
11278 if ( SMESHDS_SubMesh* smDS = getMeshDS()->MeshElements( s2s->second ))
11280 SMESH_ProxyMesh::SubMesh* proxySub =
11281 data._proxyMesh->getFaceSubM( TopoDS::Face( s2s->second ), /*create=*/true);
11282 if ( proxySub->NbElements() == 0 )
11284 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11285 while ( fIt->more() )
11287 const SMDS_MeshElement* f = fIt->next();
11288 // as a result 3D algo will use elements from proxySub and not from smDS
11289 proxySub->AddElement( f );
11290 f->setIsMarked( true );
11292 // Mark nodes on the FACE to discriminate them from nodes
11293 // added by addBoundaryElements(); marked nodes are to be smoothed while shrink()
11294 for ( int iN = 0, nbN = f->NbNodes(); iN < nbN; ++iN )
11296 const SMDS_MeshNode* n = f->GetNode( iN );
11297 if ( n->GetPosition()->GetDim() == 2 )
11298 n->setIsMarked( true );
11306 SMESH_MesherHelper helper( *_mesh );
11307 helper.ToFixNodeParameters( true );
11310 map< TGeomID, _Shrinker1D > e2shrMap;
11311 vector< _EdgesOnShape* > subEOS;
11312 vector< _LayerEdge* > lEdges;
11314 // loop on FACEs to shrink mesh on
11315 map< TGeomID, list< _SolidData* > >::iterator f2sd = f2sdMap.begin();
11316 for ( ; f2sd != f2sdMap.end(); ++f2sd )
11318 list< _SolidData* > & dataList = f2sd->second;
11319 if ( dataList.front()->_n2eMap.empty() ||
11320 dataList.back() ->_n2eMap.empty() )
11321 continue; // not yet computed
11322 if ( dataList.front() != &theData &&
11323 dataList.back() != &theData )
11326 _SolidData& data = *dataList.front();
11327 _SolidData* data2 = dataList.size() > 1 ? dataList.back() : 0;
11328 const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( f2sd->first ));
11329 SMESH_subMesh* sm = _mesh->GetSubMesh( F );
11330 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
11332 Handle(Geom_Surface) surface = BRep_Tool::Surface( F );
11334 _shrunkFaces.Add( F );
11335 helper.SetSubShape( F );
11337 // ==============================
11338 // Use periodicity to move nodes
11339 // ==============================
11341 PeriodicFaces* periodic = _periodicity->GetPeriodic( F, _shrunkFaces );
11342 bool movedByPeriod = ( periodic && periodic->MoveNodes( F ));
11344 // ===========================
11345 // Prepare data for shrinking
11346 // ===========================
11348 // Collect nodes to smooth (they are marked at the beginning of this method)
11349 vector < const SMDS_MeshNode* > smoothNodes;
11351 if ( !movedByPeriod )
11353 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
11354 while ( nIt->more() )
11356 const SMDS_MeshNode* n = nIt->next();
11357 if ( n->isMarked() )
11358 smoothNodes.push_back( n );
11361 // Find out face orientation
11362 double refSign = 1;
11363 const set<TGeomID> ignoreShapes;
11365 if ( !smoothNodes.empty() )
11367 vector<_Simplex> simplices;
11368 _Simplex::GetSimplices( smoothNodes[0], simplices, ignoreShapes );
11369 helper.GetNodeUV( F, simplices[0]._nPrev, 0, &isOkUV ); // fix UV of simplex nodes
11370 helper.GetNodeUV( F, simplices[0]._nNext, 0, &isOkUV );
11371 gp_XY uv = helper.GetNodeUV( F, smoothNodes[0], 0, &isOkUV );
11372 if ( !simplices[0].IsForward(uv, smoothNodes[0], F, helper, refSign ))
11376 // Find _LayerEdge's inflated along F
11380 SMESH_subMeshIteratorPtr subIt = sm->getDependsOnIterator(/*includeSelf=*/false,
11381 /*complexFirst=*/true); //!!!
11382 while ( subIt->more() )
11384 const TGeomID subID = subIt->next()->GetId();
11385 if ( data._noShrinkShapes.count( subID ))
11387 _EdgesOnShape* eos = data.GetShapeEdges( subID );
11388 if ( !eos || eos->_sWOL.IsNull() )
11389 if ( data2 ) // check in adjacent SOLID
11391 eos = data2->GetShapeEdges( subID );
11392 if ( !eos || eos->_sWOL.IsNull() )
11395 subEOS.push_back( eos );
11397 if ( !movedByPeriod )
11398 for ( size_t i = 0; i < eos->_edges.size(); ++i )
11400 lEdges.push_back( eos->_edges[ i ] );
11401 prepareEdgeToShrink( *eos->_edges[ i ], *eos, helper, smDS );
11406 dumpFunction(SMESH_Comment("beforeShrinkFace")<<f2sd->first); // debug
11407 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11408 while ( fIt->more() )
11409 if ( const SMDS_MeshElement* f = fIt->next() )
11410 dumpChangeNodes( f );
11413 // Replace source nodes by target nodes in mesh faces to shrink
11414 dumpFunction(SMESH_Comment("replNodesOnFace")<<f2sd->first); // debug
11415 const SMDS_MeshNode* nodes[20];
11416 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11418 _EdgesOnShape& eos = * subEOS[ iS ];
11419 for ( size_t i = 0; i < eos._edges.size(); ++i )
11421 _LayerEdge& edge = *eos._edges[i];
11422 const SMDS_MeshNode* srcNode = edge._nodes[0];
11423 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11424 SMDS_ElemIteratorPtr fIt = srcNode->GetInverseElementIterator(SMDSAbs_Face);
11425 while ( fIt->more() )
11427 const SMDS_MeshElement* f = fIt->next();
11428 if ( !smDS->Contains( f ) || !f->isMarked() )
11430 SMDS_NodeIteratorPtr nIt = f->nodeIterator();
11431 for ( int iN = 0; nIt->more(); ++iN )
11433 const SMDS_MeshNode* n = nIt->next();
11434 nodes[iN] = ( n == srcNode ? tgtNode : n );
11436 helper.GetMeshDS()->ChangeElementNodes( f, nodes, f->NbNodes() );
11437 dumpChangeNodes( f );
11443 // find out if a FACE is concave
11444 const bool isConcaveFace = isConcave( F, helper );
11446 // Create _SmoothNode's on face F
11447 vector< _SmoothNode > nodesToSmooth( smoothNodes.size() );
11449 dumpFunction(SMESH_Comment("fixUVOnFace")<<f2sd->first); // debug
11450 const bool sortSimplices = isConcaveFace;
11451 for ( size_t i = 0; i < smoothNodes.size(); ++i )
11453 const SMDS_MeshNode* n = smoothNodes[i];
11454 nodesToSmooth[ i ]._node = n;
11455 // src nodes must be already replaced by tgt nodes to have tgt nodes in _simplices
11456 _Simplex::GetSimplices( n, nodesToSmooth[ i ]._simplices, ignoreShapes, 0, sortSimplices);
11457 // fix up incorrect uv of nodes on the FACE
11458 helper.GetNodeUV( F, n, 0, &isOkUV);
11463 //if ( nodesToSmooth.empty() ) continue;
11465 // Find EDGE's to shrink and set simpices to LayerEdge's
11466 set< _Shrinker1D* > eShri1D;
11468 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11470 _EdgesOnShape& eos = * subEOS[ iS ];
11471 if ( eos.SWOLType() == TopAbs_EDGE )
11473 SMESH_subMesh* edgeSM = _mesh->GetSubMesh( eos._sWOL );
11474 VISCOUS_3D::ToClearSubWithMain( edgeSM, data._solid );
11475 if ( !movedByPeriod )
11477 _Shrinker1D& shrinker = e2shrMap[ edgeSM->GetId() ];
11478 eShri1D.insert( & shrinker );
11479 shrinker.AddEdge( eos._edges[0], eos, helper );
11480 // restore params of nodes on EDGE if the EDGE has been already
11481 // shrunk while shrinking other FACE
11482 shrinker.RestoreParams();
11485 for ( size_t i = 0; i < eos._edges.size(); ++i )
11487 _LayerEdge& edge = * eos._edges[i];
11488 _Simplex::GetSimplices( /*tgtNode=*/edge._nodes.back(), edge._simplices, ignoreShapes );
11490 // additionally mark tgt node; only marked nodes will be used in SetNewLength2d()
11491 // not-marked nodes are those added by refine()
11492 edge._nodes.back()->setIsMarked( true );
11497 bool toFixTria = false; // to improve quality of trias by diagonal swap
11498 if ( isConcaveFace && !movedByPeriod )
11500 const bool hasTria = _mesh->NbTriangles(), hasQuad = _mesh->NbQuadrangles();
11501 if ( hasTria != hasQuad ) {
11502 toFixTria = hasTria;
11505 set<int> nbNodesSet;
11506 SMDS_ElemIteratorPtr fIt = smDS->GetElements();
11507 while ( fIt->more() && nbNodesSet.size() < 2 )
11508 nbNodesSet.insert( fIt->next()->NbCornerNodes() );
11509 toFixTria = ( *nbNodesSet.begin() == 3 );
11513 // ==================
11514 // Perform shrinking
11515 // ==================
11517 bool shrunk = !movedByPeriod;
11518 int nbBad, shriStep=0, smooStep=0;
11519 _SmoothNode::SmoothType smoothType
11520 = isConcaveFace ? _SmoothNode::ANGULAR : _SmoothNode::LAPLACIAN;
11521 SMESH_Comment errMsg;
11525 // Move boundary nodes (actually just set new UV)
11526 // -----------------------------------------------
11527 dumpFunction(SMESH_Comment("moveBoundaryOnF")<<f2sd->first<<"_st"<<shriStep ); // debug
11529 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11531 _EdgesOnShape& eos = * subEOS[ iS ];
11532 for ( size_t i = 0; i < eos._edges.size(); ++i )
11534 shrunk |= eos._edges[i]->SetNewLength2d( surface, F, eos, helper );
11539 // Move nodes on EDGE's
11540 // (XYZ is set as soon as a needed length reached in SetNewLength2d())
11541 set< _Shrinker1D* >::iterator shr = eShri1D.begin();
11542 for ( ; shr != eShri1D.end(); ++shr )
11543 (*shr)->Compute( /*set3D=*/false, helper );
11546 // -----------------
11547 int nbNoImpSteps = 0;
11550 while (( nbNoImpSteps < 5 && nbBad > 0) && moved)
11552 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11554 int oldBadNb = nbBad;
11557 // '% 5' minimizes NB FUNCTIONS on viscous_layers_00/B2 case
11558 _SmoothNode::SmoothType smooTy = ( smooStep % 5 ) ? smoothType : _SmoothNode::LAPLACIAN;
11559 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11561 moved |= nodesToSmooth[i].Smooth( nbBad, surface, helper, refSign,
11562 smooTy, /*set3D=*/isConcaveFace);
11564 if ( nbBad < oldBadNb )
11574 errMsg << "Can't shrink 2D mesh on face " << f2sd->first;
11575 if ( shriStep > 200 )
11576 errMsg << "Infinite loop at shrinking 2D mesh on face " << f2sd->first;
11577 if ( !errMsg.empty() )
11580 // Fix narrow triangles by swapping diagonals
11581 // ---------------------------------------
11584 set<const SMDS_MeshNode*> usedNodes;
11585 fixBadFaces( F, helper, /*is2D=*/true, shriStep, & usedNodes); // swap diagonals
11587 // update working data
11588 set<const SMDS_MeshNode*>::iterator n;
11589 for ( size_t i = 0; i < nodesToSmooth.size() && !usedNodes.empty(); ++i )
11591 n = usedNodes.find( nodesToSmooth[ i ]._node );
11592 if ( n != usedNodes.end())
11594 _Simplex::GetSimplices( nodesToSmooth[ i ]._node,
11595 nodesToSmooth[ i ]._simplices,
11596 ignoreShapes, NULL,
11597 /*sortSimplices=*/ smoothType == _SmoothNode::ANGULAR );
11598 usedNodes.erase( n );
11601 for ( size_t i = 0; i < lEdges.size() && !usedNodes.empty(); ++i )
11603 n = usedNodes.find( /*tgtNode=*/ lEdges[i]->_nodes.back() );
11604 if ( n != usedNodes.end())
11606 _Simplex::GetSimplices( lEdges[i]->_nodes.back(),
11607 lEdges[i]->_simplices,
11609 usedNodes.erase( n );
11613 // TODO: check effect of this additional smooth
11614 // additional laplacian smooth to increase allowed shrink step
11615 // for ( int st = 1; st; --st )
11617 // dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11618 // for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11620 // nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11621 // _SmoothNode::LAPLACIAN,/*set3D=*/false);
11625 } // while ( shrunk )
11627 if ( !errMsg.empty() ) // Try to re-compute the shrink FACE
11629 debugMsg( "Re-compute FACE " << f2sd->first << " because " << errMsg );
11632 SMESHDS_SubMesh* psm = data._proxyMesh->getFaceSubM( F );
11634 vector< const SMDS_MeshElement* > facesToRm;
11637 facesToRm.reserve( psm->NbElements() );
11638 for ( SMDS_ElemIteratorPtr ite = psm->GetElements(); ite->more(); )
11639 facesToRm.push_back( ite->next() );
11641 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11642 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11645 for ( size_t i = 0; i < facesToRm.size(); ++i )
11646 getMeshDS()->RemoveFreeElement( facesToRm[i], smDS, /*fromGroups=*/false );
11650 TIDSortedNodeSet nodesToKeep; // nodes of _LayerEdge to keep
11651 for ( size_t iS = 0; iS < subEOS.size(); ++iS ) {
11652 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11653 nodesToKeep.insert( ++( subEOS[iS]->_edges[i]->_nodes.begin() ),
11654 subEOS[iS]->_edges[i]->_nodes.end() );
11656 SMDS_NodeIteratorPtr itn = smDS->GetNodes();
11657 while ( itn->more() ) {
11658 const SMDS_MeshNode* n = itn->next();
11659 if ( !nodesToKeep.count( n ))
11660 getMeshDS()->RemoveFreeNode( n, smDS, /*fromGroups=*/false );
11663 _periodicity->ClearPeriodic( F );
11665 // restore position and UV of target nodes
11667 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11668 for ( size_t i = 0; i < subEOS[iS]->_edges.size(); ++i )
11670 _LayerEdge* edge = subEOS[iS]->_edges[i];
11671 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( edge->_nodes.back() );
11672 if ( edge->_pos.empty() ||
11673 edge->Is( _LayerEdge::SHRUNK )) continue;
11674 if ( subEOS[iS]->SWOLType() == TopAbs_FACE )
11676 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11677 pos->SetUParameter( edge->_pos[0].X() );
11678 pos->SetVParameter( edge->_pos[0].Y() );
11679 p = surface->Value( edge->_pos[0].X(), edge->_pos[0].Y() );
11683 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11684 pos->SetUParameter( edge->_pos[0].Coord( U_TGT ));
11685 p = BRepAdaptor_Curve( TopoDS::Edge( subEOS[iS]->_sWOL )).Value( pos->GetUParameter() );
11687 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
11688 dumpMove( tgtNode );
11690 // shrink EDGE sub-meshes and set proxy sub-meshes
11691 UVPtStructVec uvPtVec;
11692 set< _Shrinker1D* >::iterator shrIt = eShri1D.begin();
11693 for ( shrIt = eShri1D.begin(); shrIt != eShri1D.end(); ++shrIt )
11695 _Shrinker1D* shr = (*shrIt);
11696 shr->Compute( /*set3D=*/true, helper );
11698 // set proxy mesh of EDGEs w/o layers
11699 map< double, const SMDS_MeshNode* > nodes;
11700 SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), shr->GeomEdge(),/*skipMedium=*/true, nodes);
11701 // remove refinement nodes
11702 const SMDS_MeshNode* sn0 = shr->SrcNode(0), *sn1 = shr->SrcNode(1);
11703 const SMDS_MeshNode* tn0 = shr->TgtNode(0), *tn1 = shr->TgtNode(1);
11704 map< double, const SMDS_MeshNode* >::iterator u2n = nodes.begin();
11705 if ( u2n->second == sn0 || u2n->second == sn1 )
11707 while ( u2n->second != tn0 && u2n->second != tn1 )
11709 nodes.erase( nodes.begin(), u2n );
11711 u2n = --nodes.end();
11712 if ( u2n->second == sn0 || u2n->second == sn1 )
11714 while ( u2n->second != tn0 && u2n->second != tn1 )
11716 nodes.erase( ++u2n, nodes.end() );
11718 // set proxy sub-mesh
11719 uvPtVec.resize( nodes.size() );
11720 u2n = nodes.begin();
11721 BRepAdaptor_Curve2d curve( shr->GeomEdge(), F );
11722 for ( size_t i = 0; i < nodes.size(); ++i, ++u2n )
11724 uvPtVec[ i ].node = u2n->second;
11725 uvPtVec[ i ].param = u2n->first;
11726 uvPtVec[ i ].SetUV( curve.Value( u2n->first ).XY() );
11728 StdMeshers_FaceSide fSide( uvPtVec, F, shr->GeomEdge(), _mesh );
11729 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11732 // set proxy mesh of EDGEs with layers
11733 vector< _LayerEdge* > edges;
11734 for ( size_t iS = 0; iS < subEOS.size(); ++iS )
11736 _EdgesOnShape& eos = * subEOS[ iS ];
11737 if ( eos.ShapeType() != TopAbs_EDGE ) continue;
11739 const TopoDS_Edge& E = TopoDS::Edge( eos._shape );
11740 data.SortOnEdge( E, eos._edges );
11743 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 0, E, /*CumOri=*/false )))
11744 if ( !eov->_edges.empty() )
11745 edges.push_back( eov->_edges[0] ); // on 1st VERTEX
11747 edges.insert( edges.end(), eos._edges.begin(), eos._edges.end() );
11749 if ( _EdgesOnShape* eov = data.GetShapeEdges( helper.IthVertex( 1, E, /*CumOri=*/false )))
11750 if ( !eov->_edges.empty() )
11751 edges.push_back( eov->_edges[0] ); // on last VERTEX
11753 uvPtVec.resize( edges.size() );
11754 for ( size_t i = 0; i < edges.size(); ++i )
11756 uvPtVec[ i ].node = edges[i]->_nodes.back();
11757 uvPtVec[ i ].param = helper.GetNodeU( E, edges[i]->_nodes[0] );
11758 uvPtVec[ i ].SetUV( helper.GetNodeUV( F, edges[i]->_nodes.back() ));
11760 if ( edges.empty() )
11762 BRep_Tool::Range( E, uvPtVec[0].param, uvPtVec.back().param );
11763 StdMeshers_FaceSide fSide( uvPtVec, F, E, _mesh );
11764 StdMeshers_ViscousLayers2D::SetProxyMeshOfEdge( fSide );
11766 // temporary clear the FACE sub-mesh from faces made by refine()
11767 vector< const SMDS_MeshElement* > elems;
11768 elems.reserve( smDS->NbElements() + smDS->NbNodes() );
11769 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11770 elems.push_back( ite->next() );
11771 for ( SMDS_NodeIteratorPtr ite = smDS->GetNodes(); ite->more(); )
11772 elems.push_back( ite->next() );
11775 // compute the mesh on the FACE
11776 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
11777 sm->ComputeStateEngine( SMESH_subMesh::COMPUTE_SUBMESH );
11779 // re-fill proxy sub-meshes of the FACE
11780 for ( size_t i = 0 ; i < _sdVec.size(); ++i )
11781 if (( psm = _sdVec[i]._proxyMesh->getFaceSubM( F )))
11782 for ( SMDS_ElemIteratorPtr ite = smDS->GetElements(); ite->more(); )
11783 psm->AddElement( ite->next() );
11786 for ( size_t i = 0; i < elems.size(); ++i )
11787 smDS->AddElement( elems[i] );
11789 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
11790 return error( errMsg );
11792 } // end of re-meshing in case of failed smoothing
11793 else if ( !movedByPeriod )
11795 // No wrongly shaped faces remain; final smooth. Set node XYZ.
11796 bool isStructuredFixed = false;
11797 if ( SMESH_2D_Algo* algo = dynamic_cast<SMESH_2D_Algo*>( sm->GetAlgo() ))
11798 isStructuredFixed = algo->FixInternalNodes( *data._proxyMesh, F );
11799 if ( !isStructuredFixed )
11801 if ( isConcaveFace ) // fix narrow faces by swapping diagonals
11802 fixBadFaces( F, helper, /*is2D=*/false, ++shriStep );
11804 for ( int st = 3; st; --st )
11807 case 1: smoothType = _SmoothNode::LAPLACIAN; break;
11808 case 2: smoothType = _SmoothNode::LAPLACIAN; break;
11809 case 3: smoothType = _SmoothNode::ANGULAR; break;
11811 dumpFunction(SMESH_Comment("shrinkFace")<<f2sd->first<<"_st"<<++smooStep); // debug
11812 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11814 nodesToSmooth[i].Smooth( nbBad,surface,helper,refSign,
11815 smoothType,/*set3D=*/st==1 );
11820 if ( !getMeshDS()->IsEmbeddedMode() )
11821 // Log node movement
11822 for ( size_t i = 0; i < nodesToSmooth.size(); ++i )
11824 SMESH_TNodeXYZ p ( nodesToSmooth[i]._node );
11825 getMeshDS()->MoveNode( nodesToSmooth[i]._node, p.X(), p.Y(), p.Z() );
11829 // Set an event listener to clear FACE sub-mesh together with SOLID sub-mesh
11830 VISCOUS_3D::ToClearSubWithMain( sm, data._solid );
11832 VISCOUS_3D::ToClearSubWithMain( sm, data2->_solid );
11834 } // loop on FACES to shrink mesh on
11837 // Replace source nodes by target nodes in shrunk mesh edges
11839 map< int, _Shrinker1D >::iterator e2shr = e2shrMap.begin();
11840 for ( ; e2shr != e2shrMap.end(); ++e2shr )
11841 e2shr->second.SwapSrcTgtNodes( getMeshDS() );
11846 //================================================================================
11848 * \brief Computes 2d shrink direction and finds nodes limiting shrinking
11850 //================================================================================
11852 bool _ViscousBuilder::prepareEdgeToShrink( _LayerEdge& edge,
11853 _EdgesOnShape& eos,
11854 SMESH_MesherHelper& helper,
11855 const SMESHDS_SubMesh* /*faceSubMesh*/)
11857 const SMDS_MeshNode* srcNode = edge._nodes[0];
11858 const SMDS_MeshNode* tgtNode = edge._nodes.back();
11860 if ( eos.SWOLType() == TopAbs_FACE )
11862 if ( tgtNode->GetPosition()->GetDim() != 2 ) // not inflated edge
11865 edge.Set( _LayerEdge::SHRUNK );
11866 return srcNode == tgtNode;
11868 gp_XY srcUV ( edge._pos[0].X(), edge._pos[0].Y() ); //helper.GetNodeUV( F, srcNode );
11869 gp_XY tgtUV = edge.LastUV( TopoDS::Face( eos._sWOL ), eos ); //helper.GetNodeUV( F, tgtNode );
11870 gp_Vec2d uvDir( srcUV, tgtUV );
11871 double uvLen = uvDir.Magnitude();
11873 edge._normal.SetCoord( uvDir.X(),uvDir.Y(), 0 );
11876 //edge._pos.resize(1);
11877 edge._pos[0].SetCoord( tgtUV.X(), tgtUV.Y(), 0 );
11879 // set UV of source node to target node
11880 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
11881 pos->SetUParameter( srcUV.X() );
11882 pos->SetVParameter( srcUV.Y() );
11884 else // _sWOL is TopAbs_EDGE
11886 if ( tgtNode->GetPosition()->GetDim() != 1 ) // not inflated edge
11889 edge.Set( _LayerEdge::SHRUNK );
11890 return srcNode == tgtNode;
11892 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
11893 SMESHDS_SubMesh* edgeSM = getMeshDS()->MeshElements( E );
11894 if ( !edgeSM || edgeSM->NbElements() == 0 )
11895 return error(SMESH_Comment("Not meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11897 const SMDS_MeshNode* n2 = 0;
11898 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
11899 while ( eIt->more() && !n2 )
11901 const SMDS_MeshElement* e = eIt->next();
11902 if ( !edgeSM->Contains(e)) continue;
11903 n2 = e->GetNode( 0 );
11904 if ( n2 == srcNode ) n2 = e->GetNode( 1 );
11907 return error(SMESH_Comment("Wrongly meshed EDGE ") << getMeshDS()->ShapeToIndex( E ));
11909 if ( n2 == tgtNode || // for 3D_mesh_GHS3D_01/B1
11910 n2 == edge._nodes[1] ) // bos #20643
11912 // shrunk by other SOLID
11913 edge.Set( _LayerEdge::SHRUNK ); // ???
11917 double uSrc = helper.GetNodeU( E, srcNode, n2 );
11918 double uTgt = helper.GetNodeU( E, tgtNode, srcNode );
11919 double u2 = helper.GetNodeU( E, n2, srcNode );
11921 //edge._pos.clear();
11923 if ( fabs( uSrc-uTgt ) < 0.99 * fabs( uSrc-u2 ))
11925 // tgtNode is located so that it does not make faces with wrong orientation
11926 edge.Set( _LayerEdge::SHRUNK );
11929 //edge._pos.resize(1);
11930 edge._pos[0].SetCoord( U_TGT, uTgt );
11931 edge._pos[0].SetCoord( U_SRC, uSrc );
11932 edge._pos[0].SetCoord( LEN_TGT, fabs( uSrc-uTgt ));
11934 edge._simplices.resize( 1 );
11935 edge._simplices[0]._nPrev = n2;
11937 // set U of source node to the target node
11938 SMDS_EdgePositionPtr pos = tgtNode->GetPosition();
11939 pos->SetUParameter( uSrc );
11944 //================================================================================
11946 * \brief Restore position of a sole node of a _LayerEdge based on _noShrinkShapes
11948 //================================================================================
11950 void _ViscousBuilder::restoreNoShrink( _LayerEdge& edge ) const
11952 if ( edge._nodes.size() == 1 )
11957 const SMDS_MeshNode* srcNode = edge._nodes[0];
11958 TopoDS_Shape S = SMESH_MesherHelper::GetSubShapeByNode( srcNode, getMeshDS() );
11959 if ( S.IsNull() ) return;
11963 switch ( S.ShapeType() )
11968 TopLoc_Location loc;
11969 Handle(Geom_Curve) curve = BRep_Tool::Curve( TopoDS::Edge( S ), loc, f, l );
11970 if ( curve.IsNull() ) return;
11971 SMDS_EdgePositionPtr ePos = srcNode->GetPosition();
11972 p = curve->Value( ePos->GetUParameter() );
11975 case TopAbs_VERTEX:
11977 p = BRep_Tool::Pnt( TopoDS::Vertex( S ));
11982 getMeshDS()->MoveNode( srcNode, p.X(), p.Y(), p.Z() );
11983 dumpMove( srcNode );
11987 //================================================================================
11989 * \brief Try to fix triangles with high aspect ratio by swapping diagonals
11991 //================================================================================
11993 void _ViscousBuilder::fixBadFaces(const TopoDS_Face& F,
11994 SMESH_MesherHelper& helper,
11997 set<const SMDS_MeshNode*> * involvedNodes)
11999 SMESH::Controls::AspectRatio qualifier;
12000 SMESH::Controls::TSequenceOfXYZ points(3), points1(3), points2(3);
12001 const double maxAspectRatio = is2D ? 4. : 2;
12002 _NodeCoordHelper xyz( F, helper, is2D );
12004 // find bad triangles
12006 vector< const SMDS_MeshElement* > badTrias;
12007 vector< double > badAspects;
12008 SMESHDS_SubMesh* sm = helper.GetMeshDS()->MeshElements( F );
12009 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12010 while ( fIt->more() )
12012 const SMDS_MeshElement * f = fIt->next();
12013 if ( f->NbCornerNodes() != 3 ) continue;
12014 for ( int iP = 0; iP < 3; ++iP ) points(iP+1) = xyz( f->GetNode(iP));
12015 double aspect = qualifier.GetValue( points );
12016 if ( aspect > maxAspectRatio )
12018 badTrias.push_back( f );
12019 badAspects.push_back( aspect );
12024 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID());
12025 SMDS_ElemIteratorPtr fIt = sm->GetElements();
12026 while ( fIt->more() )
12028 const SMDS_MeshElement * f = fIt->next();
12029 if ( f->NbCornerNodes() == 3 )
12030 dumpChangeNodes( f );
12034 if ( badTrias.empty() )
12037 // find couples of faces to swap diagonal
12039 typedef pair < const SMDS_MeshElement* , const SMDS_MeshElement* > T2Trias;
12040 vector< T2Trias > triaCouples;
12042 TIDSortedElemSet involvedFaces, emptySet;
12043 for ( size_t iTia = 0; iTia < badTrias.size(); ++iTia )
12046 double aspRatio [3];
12049 if ( !involvedFaces.insert( badTrias[iTia] ).second )
12051 for ( int iP = 0; iP < 3; ++iP )
12052 points(iP+1) = xyz( badTrias[iTia]->GetNode(iP));
12054 // find triangles adjacent to badTrias[iTia] with better aspect ratio after diag-swaping
12055 int bestCouple = -1;
12056 for ( int iSide = 0; iSide < 3; ++iSide )
12058 const SMDS_MeshNode* n1 = badTrias[iTia]->GetNode( iSide );
12059 const SMDS_MeshNode* n2 = badTrias[iTia]->GetNode(( iSide+1 ) % 3 );
12060 trias [iSide].first = badTrias[iTia];
12061 trias [iSide].second = SMESH_MeshAlgos::FindFaceInSet( n1, n2, emptySet, involvedFaces,
12063 if (( ! trias[iSide].second ) ||
12064 ( trias[iSide].second->NbCornerNodes() != 3 ) ||
12065 ( ! sm->Contains( trias[iSide].second )))
12068 // aspect ratio of an adjacent tria
12069 for ( int iP = 0; iP < 3; ++iP )
12070 points2(iP+1) = xyz( trias[iSide].second->GetNode(iP));
12071 double aspectInit = qualifier.GetValue( points2 );
12073 // arrange nodes as after diag-swaping
12074 if ( helper.WrapIndex( i1+1, 3 ) == i2 )
12075 i3 = helper.WrapIndex( i1-1, 3 );
12077 i3 = helper.WrapIndex( i1+1, 3 );
12079 points1( 1+ iSide ) = points2( 1+ i3 );
12080 points2( 1+ i2 ) = points1( 1+ ( iSide+2 ) % 3 );
12082 // aspect ratio after diag-swaping
12083 aspRatio[ iSide ] = qualifier.GetValue( points1 ) + qualifier.GetValue( points2 );
12084 if ( aspRatio[ iSide ] > aspectInit + badAspects[ iTia ] )
12087 // prevent inversion of a triangle
12088 gp_Vec norm1 = gp_Vec( points1(1), points1(3) ) ^ gp_Vec( points1(1), points1(2) );
12089 gp_Vec norm2 = gp_Vec( points2(1), points2(3) ) ^ gp_Vec( points2(1), points2(2) );
12090 if ( norm1 * norm2 < 0. && norm1.Angle( norm2 ) > 70./180.*M_PI )
12093 if ( bestCouple < 0 || aspRatio[ bestCouple ] > aspRatio[ iSide ] )
12094 bestCouple = iSide;
12097 if ( bestCouple >= 0 )
12099 triaCouples.push_back( trias[bestCouple] );
12100 involvedFaces.insert ( trias[bestCouple].second );
12104 involvedFaces.erase( badTrias[iTia] );
12107 if ( triaCouples.empty() )
12112 SMESH_MeshEditor editor( helper.GetMesh() );
12113 dumpFunction(SMESH_Comment("beforeSwapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12114 for ( size_t i = 0; i < triaCouples.size(); ++i )
12116 dumpChangeNodes( triaCouples[i].first );
12117 dumpChangeNodes( triaCouples[i].second );
12118 editor.InverseDiag( triaCouples[i].first, triaCouples[i].second );
12121 if ( involvedNodes )
12122 for ( size_t i = 0; i < triaCouples.size(); ++i )
12124 involvedNodes->insert( triaCouples[i].first->begin_nodes(),
12125 triaCouples[i].first->end_nodes() );
12126 involvedNodes->insert( triaCouples[i].second->begin_nodes(),
12127 triaCouples[i].second->end_nodes() );
12130 // just for debug dump resulting triangles
12131 dumpFunction(SMESH_Comment("swapDiagonals_F")<<helper.GetSubShapeID()<<"_"<<step);
12132 for ( size_t i = 0; i < triaCouples.size(); ++i )
12134 dumpChangeNodes( triaCouples[i].first );
12135 dumpChangeNodes( triaCouples[i].second );
12139 //================================================================================
12141 * \brief Move target node to it's final position on the FACE during shrinking
12143 //================================================================================
12145 bool _LayerEdge::SetNewLength2d( Handle(Geom_Surface)& surface,
12146 const TopoDS_Face& F,
12147 _EdgesOnShape& eos,
12148 SMESH_MesherHelper& helper )
12151 return false; // already at the target position
12153 SMDS_MeshNode* tgtNode = const_cast< SMDS_MeshNode*& >( _nodes.back() );
12155 if ( eos.SWOLType() == TopAbs_FACE )
12157 gp_XY curUV = helper.GetNodeUV( F, tgtNode );
12158 gp_Pnt2d tgtUV( _pos[0].X(), _pos[0].Y() );
12159 gp_Vec2d uvDir( _normal.X(), _normal.Y() );
12160 const double uvLen = tgtUV.Distance( curUV );
12161 const double kSafe = Max( 0.5, 1. - 0.1 * _simplices.size() );
12163 // Select shrinking step such that not to make faces with wrong orientation.
12164 double stepSize = 1e100;
12165 for ( size_t i = 0; i < _simplices.size(); ++i )
12167 if ( !_simplices[i]._nPrev->isMarked() ||
12168 !_simplices[i]._nNext->isMarked() )
12169 continue; // simplex of quadrangle created by addBoundaryElements()
12171 // find intersection of 2 lines: curUV-tgtUV and that connecting simplex nodes
12172 gp_XY uvN1 = helper.GetNodeUV( F, _simplices[i]._nPrev, tgtNode );
12173 gp_XY uvN2 = helper.GetNodeUV( F, _simplices[i]._nNext, tgtNode );
12174 gp_XY dirN = uvN2 - uvN1;
12175 double det = uvDir.Crossed( dirN );
12176 if ( Abs( det ) < std::numeric_limits<double>::min() ) continue;
12177 gp_XY dirN2Cur = curUV - uvN1;
12178 double step = dirN.Crossed( dirN2Cur ) / det;
12180 stepSize = Min( step, stepSize );
12183 if ( uvLen <= stepSize )
12189 else if ( stepSize > 0 )
12191 newUV = curUV + uvDir.XY() * stepSize * kSafe;
12197 SMDS_FacePositionPtr pos = tgtNode->GetPosition();
12198 pos->SetUParameter( newUV.X() );
12199 pos->SetVParameter( newUV.Y() );
12202 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12203 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12204 dumpMove( tgtNode );
12206 if ( surface.IsNull() ) {}
12209 else // _sWOL is TopAbs_EDGE
12211 const TopoDS_Edge& E = TopoDS::Edge( eos._sWOL );
12212 const SMDS_MeshNode* n2 = _simplices[0]._nPrev;
12213 SMDS_EdgePositionPtr tgtPos = tgtNode->GetPosition();
12215 const double u2 = helper.GetNodeU( E, n2, tgtNode );
12216 const double uSrc = _pos[0].Coord( U_SRC );
12217 const double lenTgt = _pos[0].Coord( LEN_TGT );
12219 double newU = _pos[0].Coord( U_TGT );
12220 if ( lenTgt < 0.99 * fabs( uSrc-u2 )) // n2 got out of src-tgt range
12222 Set( _LayerEdge::SHRUNK );
12227 newU = 0.1 * tgtPos->GetUParameter() + 0.9 * u2;
12229 tgtPos->SetUParameter( newU );
12231 gp_XY newUV = helper.GetNodeUV( F, tgtNode, _nodes[0]);
12232 gp_Pnt p = surface->Value( newUV.X(), newUV.Y() );
12233 tgtNode->setXYZ( p.X(), p.Y(), p.Z() );
12234 dumpMove( tgtNode );
12241 //================================================================================
12243 * \brief Perform smooth on the FACE
12244 * \retval bool - true if the node has been moved
12246 //================================================================================
12248 bool _SmoothNode::Smooth(int& nbBad,
12249 Handle(Geom_Surface)& surface,
12250 SMESH_MesherHelper& helper,
12251 const double refSign,
12255 const TopoDS_Face& face = TopoDS::Face( helper.GetSubShape() );
12257 // get uv of surrounding nodes
12258 vector<gp_XY> uv( _simplices.size() );
12259 for ( size_t i = 0; i < _simplices.size(); ++i )
12260 uv[i] = helper.GetNodeUV( face, _simplices[i]._nPrev, _node );
12262 // compute new UV for the node
12263 gp_XY newPos (0,0);
12264 if ( how == TFI && _simplices.size() == 4 )
12267 for ( size_t i = 0; i < _simplices.size(); ++i )
12268 if ( _simplices[i]._nOpp )
12269 corners[i] = helper.GetNodeUV( face, _simplices[i]._nOpp, _node );
12271 throw SALOME_Exception(LOCALIZED("TFI smoothing: _Simplex::_nOpp not set!"));
12273 newPos = helper.calcTFI ( 0.5, 0.5,
12274 corners[0], corners[1], corners[2], corners[3],
12275 uv[1], uv[2], uv[3], uv[0] );
12277 else if ( how == ANGULAR )
12279 newPos = computeAngularPos( uv, helper.GetNodeUV( face, _node ), refSign );
12281 else if ( how == CENTROIDAL && _simplices.size() > 3 )
12283 // average centers of diagonals wieghted with their reciprocal lengths
12284 if ( _simplices.size() == 4 )
12286 double w1 = 1. / ( uv[2]-uv[0] ).SquareModulus();
12287 double w2 = 1. / ( uv[3]-uv[1] ).SquareModulus();
12288 newPos = ( w1 * ( uv[2]+uv[0] ) + w2 * ( uv[3]+uv[1] )) / ( w1+w2 ) / 2;
12292 double sumWeight = 0;
12293 int nb = _simplices.size() == 4 ? 2 : _simplices.size();
12294 for ( int i = 0; i < nb; ++i )
12297 int iTo = i + _simplices.size() - 1;
12298 for ( int j = iFrom; j < iTo; ++j )
12300 int i2 = SMESH_MesherHelper::WrapIndex( j, _simplices.size() );
12301 double w = 1. / ( uv[i]-uv[i2] ).SquareModulus();
12303 newPos += w * ( uv[i]+uv[i2] );
12306 newPos /= 2 * sumWeight; // 2 is to get a middle between uv's
12311 // Laplacian smooth
12312 for ( size_t i = 0; i < _simplices.size(); ++i )
12314 newPos /= _simplices.size();
12317 // count quality metrics (orientation) of triangles around the node
12318 int nbOkBefore = 0;
12319 gp_XY tgtUV = helper.GetNodeUV( face, _node );
12320 for ( size_t i = 0; i < _simplices.size(); ++i )
12321 nbOkBefore += _simplices[i].IsForward( tgtUV, _node, face, helper, refSign );
12324 for ( size_t i = 0; i < _simplices.size(); ++i )
12325 nbOkAfter += _simplices[i].IsForward( newPos, _node, face, helper, refSign );
12327 if ( nbOkAfter < nbOkBefore )
12329 nbBad += _simplices.size() - nbOkBefore;
12333 SMDS_FacePositionPtr pos = _node->GetPosition();
12334 pos->SetUParameter( newPos.X() );
12335 pos->SetVParameter( newPos.Y() );
12342 gp_Pnt p = surface->Value( newPos.X(), newPos.Y() );
12343 const_cast< SMDS_MeshNode* >( _node )->setXYZ( p.X(), p.Y(), p.Z() );
12347 nbBad += _simplices.size() - nbOkAfter;
12348 return ( (tgtUV-newPos).SquareModulus() > 1e-10 );
12351 //================================================================================
12353 * \brief Computes new UV using angle based smoothing technique
12355 //================================================================================
12357 gp_XY _SmoothNode::computeAngularPos(vector<gp_XY>& uv,
12358 const gp_XY& uvToFix,
12359 const double refSign)
12361 uv.push_back( uv.front() );
12363 vector< gp_XY > edgeDir ( uv.size() );
12364 vector< double > edgeSize( uv.size() );
12365 for ( size_t i = 1; i < edgeDir.size(); ++i )
12367 edgeDir [i-1] = uv[i] - uv[i-1];
12368 edgeSize[i-1] = edgeDir[i-1].Modulus();
12369 if ( edgeSize[i-1] < numeric_limits<double>::min() )
12370 edgeDir[i-1].SetX( 100 );
12372 edgeDir[i-1] /= edgeSize[i-1] * refSign;
12374 edgeDir.back() = edgeDir.front();
12375 edgeSize.back() = edgeSize.front();
12379 double sumSize = 0;
12380 for ( size_t i = 1; i < edgeDir.size(); ++i )
12382 if ( edgeDir[i-1].X() > 1. ) continue;
12384 while ( edgeDir[i].X() > 1. && ++i < edgeDir.size() );
12385 if ( i == edgeDir.size() ) break;
12387 gp_XY norm1( -edgeDir[i1].Y(), edgeDir[i1].X() );
12388 gp_XY norm2( -edgeDir[i].Y(), edgeDir[i].X() );
12389 gp_XY bisec = norm1 + norm2;
12390 double bisecSize = bisec.Modulus();
12391 if ( bisecSize < numeric_limits<double>::min() )
12393 bisec = -edgeDir[i1] + edgeDir[i];
12394 bisecSize = bisec.Modulus();
12396 bisec /= bisecSize;
12398 gp_XY dirToN = uvToFix - p;
12399 double distToN = dirToN.Modulus();
12400 if ( bisec * dirToN < 0 )
12401 distToN = -distToN;
12403 newPos += ( p + bisec * distToN ) * ( edgeSize[i1] + edgeSize[i] );
12405 sumSize += edgeSize[i1] + edgeSize[i];
12407 newPos /= /*nbEdges * */sumSize;
12411 //================================================================================
12413 * \brief Keep a _LayerEdge inflated along the EDGE
12415 //================================================================================
12417 void _Shrinker1D::AddEdge( const _LayerEdge* e,
12418 _EdgesOnShape& eos,
12419 SMESH_MesherHelper& helper )
12422 if ( _nodes.empty() )
12424 _edges[0] = _edges[1] = 0;
12427 // check _LayerEdge
12428 if ( e == _edges[0] || e == _edges[1] || e->_nodes.size() < 2 )
12430 if ( eos.SWOLType() != TopAbs_EDGE )
12431 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12432 if ( _edges[0] && !_geomEdge.IsSame( eos._sWOL ))
12433 throw SALOME_Exception(LOCALIZED("Wrong _LayerEdge is added"));
12435 // store _LayerEdge
12436 _geomEdge = TopoDS::Edge( eos._sWOL );
12438 BRep_Tool::Range( _geomEdge, f,l );
12439 double u = helper.GetNodeU( _geomEdge, e->_nodes[0], e->_nodes.back());
12440 _edges[ u < 0.5*(f+l) ? 0 : 1 ] = e;
12442 // Check if the nodes are already shrunk by another SOLID
12444 const SMDS_MeshNode* tgtNode0 = TgtNode( 0 );
12445 const SMDS_MeshNode* tgtNode1 = TgtNode( 1 );
12447 _done = (( tgtNode0 && tgtNode0->NbInverseElements( SMDSAbs_Edge ) == 2 ) ||
12448 ( tgtNode1 && tgtNode1->NbInverseElements( SMDSAbs_Edge ) == 2 ));
12450 _nodes.resize( 1, nullptr );
12454 if ( _nodes.empty() )
12456 SMESHDS_SubMesh * eSubMesh = helper.GetMeshDS()->MeshElements( _geomEdge );
12457 if ( !eSubMesh || eSubMesh->NbNodes() < 1 )
12459 TopLoc_Location loc;
12460 Handle(Geom_Curve) C = BRep_Tool::Curve( _geomEdge, loc, f,l );
12461 GeomAdaptor_Curve aCurve(C, f,l);
12462 const double totLen = GCPnts_AbscissaPoint::Length(aCurve, f, l);
12464 smIdType nbExpectNodes = eSubMesh->NbNodes();
12465 _initU .reserve( nbExpectNodes );
12466 _normPar.reserve( nbExpectNodes );
12467 _nodes .reserve( nbExpectNodes );
12468 SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
12469 while ( nIt->more() )
12471 const SMDS_MeshNode* node = nIt->next();
12473 // skip refinement nodes
12474 if ( node->NbInverseElements(SMDSAbs_Edge) == 0 ||
12475 node == tgtNode0 || node == tgtNode1 )
12477 bool hasMarkedFace = false;
12478 SMDS_ElemIteratorPtr fIt = node->GetInverseElementIterator(SMDSAbs_Face);
12479 while ( fIt->more() && !hasMarkedFace )
12480 hasMarkedFace = fIt->next()->isMarked();
12481 if ( !hasMarkedFace )
12484 _nodes.push_back( node );
12485 _initU.push_back( helper.GetNodeU( _geomEdge, node ));
12486 double len = GCPnts_AbscissaPoint::Length(aCurve, f, _initU.back());
12487 _normPar.push_back( len / totLen );
12492 // remove target node of the _LayerEdge from _nodes
12493 size_t nbFound = 0;
12494 for ( size_t i = 0; i < _nodes.size(); ++i )
12495 if ( !_nodes[i] || _nodes[i] == tgtNode0 || _nodes[i] == tgtNode1 )
12496 _nodes[i] = 0, nbFound++;
12497 if ( nbFound == _nodes.size() )
12502 //================================================================================
12504 * \brief Move nodes on EDGE from ends where _LayerEdge's are inflated
12506 //================================================================================
12508 void _Shrinker1D::Compute(bool set3D, SMESH_MesherHelper& helper)
12510 if ( _done || _nodes.empty())
12512 const _LayerEdge* e = _edges[0];
12513 if ( !e ) e = _edges[1];
12516 _done = (( !_edges[0] || _edges[0]->Is( _LayerEdge::SHRUNK )) &&
12517 ( !_edges[1] || _edges[1]->Is( _LayerEdge::SHRUNK )));
12520 if ( set3D || _done )
12522 dumpFunction(SMESH_Comment("shrink1D_E") << helper.GetMeshDS()->ShapeToIndex( _geomEdge )<<
12523 "_F" << helper.GetSubShapeID() );
12524 Handle(Geom_Curve) C = BRep_Tool::Curve(_geomEdge, f,l);
12525 GeomAdaptor_Curve aCurve(C, f,l);
12528 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12530 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12531 double totLen = GCPnts_AbscissaPoint::Length( aCurve, f, l );
12533 for ( size_t i = 0; i < _nodes.size(); ++i )
12535 if ( !_nodes[i] ) continue;
12536 double len = totLen * _normPar[i];
12537 GCPnts_AbscissaPoint discret( aCurve, len, f );
12538 if ( !discret.IsDone() )
12539 return throw SALOME_Exception(LOCALIZED("GCPnts_AbscissaPoint failed"));
12540 double u = discret.Parameter();
12541 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12542 pos->SetUParameter( u );
12543 gp_Pnt p = C->Value( u );
12544 const_cast< SMDS_MeshNode*>( _nodes[i] )->setXYZ( p.X(), p.Y(), p.Z() );
12545 dumpMove( _nodes[i] );
12551 BRep_Tool::Range( _geomEdge, f,l );
12553 f = helper.GetNodeU( _geomEdge, _edges[0]->_nodes.back(), _nodes[0] );
12555 l = helper.GetNodeU( _geomEdge, _edges[1]->_nodes.back(), _nodes.back() );
12557 for ( size_t i = 0; i < _nodes.size(); ++i )
12559 if ( !_nodes[i] ) continue;
12560 double u = f * ( 1-_normPar[i] ) + l * _normPar[i];
12561 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12562 pos->SetUParameter( u );
12567 //================================================================================
12569 * \brief Restore initial parameters of nodes on EDGE
12571 //================================================================================
12573 void _Shrinker1D::RestoreParams()
12576 for ( size_t i = 0; i < _nodes.size(); ++i )
12578 if ( !_nodes[i] ) continue;
12579 SMDS_EdgePositionPtr pos = _nodes[i]->GetPosition();
12580 pos->SetUParameter( _initU[i] );
12585 //================================================================================
12587 * \brief Replace source nodes by target nodes in shrunk mesh edges
12589 //================================================================================
12591 void _Shrinker1D::SwapSrcTgtNodes( SMESHDS_Mesh* mesh )
12593 const SMDS_MeshNode* nodes[3];
12594 for ( int i = 0; i < 2; ++i )
12596 if ( !_edges[i] ) continue;
12598 SMESHDS_SubMesh * eSubMesh = mesh->MeshElements( _geomEdge );
12599 if ( !eSubMesh ) return;
12600 const SMDS_MeshNode* srcNode = _edges[i]->_nodes[0];
12601 const SMDS_MeshNode* tgtNode = _edges[i]->_nodes.back();
12602 const SMDS_MeshNode* scdNode = _edges[i]->_nodes[1];
12603 SMDS_ElemIteratorPtr eIt = srcNode->GetInverseElementIterator(SMDSAbs_Edge);
12604 while ( eIt->more() )
12606 const SMDS_MeshElement* e = eIt->next();
12607 if ( !eSubMesh->Contains( e ) || e->GetNodeIndex( scdNode ) >= 0 )
12609 SMDS_ElemIteratorPtr nIt = e->nodesIterator();
12610 for ( int iN = 0; iN < e->NbNodes(); ++iN )
12612 const SMDS_MeshNode* n = static_cast<const SMDS_MeshNode*>( nIt->next() );
12613 nodes[iN] = ( n == srcNode ? tgtNode : n );
12615 mesh->ChangeElementNodes( e, nodes, e->NbNodes() );
12620 //================================================================================
12622 * \brief Setup quadPoints
12624 //================================================================================
12626 _Mapper2D::_Mapper2D( const TParam2ColumnMap & param2ColumnMap, const TNode2Edge& n2eMap )
12628 size_t i, iSize = _quadPoints.iSize = param2ColumnMap.size();
12629 size_t j, jSize = _quadPoints.jSize = param2ColumnMap.begin()->second.size();
12630 if ( _quadPoints.iSize < 3 ||
12631 _quadPoints.jSize < 3 )
12633 _quadPoints.uv_grid.resize( iSize * jSize );
12637 for ( auto & u_columnNodes : param2ColumnMap )
12639 for ( j = 0; j < u_columnNodes.second.size(); ++j )
12640 _quadPoints.UVPt( i, j ).node = u_columnNodes.second[ j ];
12644 // compute x parameter on borders
12645 uvPnt( 0, 0 ).x = 0;
12646 uvPnt( 0, jSize-1 ).x = 0;
12647 gp_Pnt p0, pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12648 gp_Pnt p1, pPrev1 = SMESH_NodeXYZ( uvPnt( 0, jSize-1 ).node );
12649 for ( i = 1; i < iSize; ++i )
12651 p0 = SMESH_NodeXYZ( uvPnt( i, 0 ).node );
12652 p1 = SMESH_NodeXYZ( uvPnt( i, jSize-1 ).node );
12653 uvPnt( i, 0 ).x = uvPnt( i-1, 0 ).x + p0.Distance( pPrev0 );
12654 uvPnt( i, jSize-1 ).x = uvPnt( i-1, jSize-1 ).x + p1.Distance( pPrev1 );
12658 for ( i = 1; i < iSize-1; ++i )
12660 uvPnt( i, 0 ).x /= uvPnt( iSize-1, 0 ).x;
12661 uvPnt( i, jSize-1 ).x /= uvPnt( iSize-1, jSize-1 ).x;
12662 uvPnt( i, 0 ).y = 0;
12663 uvPnt( i, jSize-1 ).y = 1;
12666 // compute y parameter on borders
12667 uvPnt( 0, 0 ).y = 0;
12668 uvPnt( iSize-1, 0 ).y = 0;
12669 pPrev0 = SMESH_NodeXYZ( uvPnt( 0, 0 ).node );
12670 pPrev1 = SMESH_NodeXYZ( uvPnt( iSize-1, 0 ).node );
12671 for ( j = 1; j < jSize; ++j )
12673 p0 = SMESH_NodeXYZ( uvPnt( 0, j ).node );
12674 p1 = SMESH_NodeXYZ( uvPnt( iSize-1, j ).node );
12675 uvPnt( 0, j ).y = uvPnt( 0, j-1 ).y + p0.Distance( pPrev0 );
12676 uvPnt( iSize-1, j ).y = uvPnt( iSize-1, j-1 ).y + p1.Distance( pPrev1 );
12680 for ( j = 1; j < jSize-1; ++j )
12682 uvPnt( 0, j ).y /= uvPnt( 0, jSize-1 ).y;
12683 uvPnt( iSize-1, j ).y /= uvPnt( iSize-1, jSize-1 ).y;
12684 uvPnt( 0, j ).x = 0;
12685 uvPnt( iSize-1, j ).x = 1;
12688 // compute xy of internal nodes
12689 for ( i = 1; i < iSize-1; ++i )
12691 const double x0 = uvPnt( i, 0 ).x;
12692 const double x1 = uvPnt( i, jSize-1 ).x;
12693 for ( j = 1; j < jSize-1; ++j )
12695 const double y0 = uvPnt( 0, j ).y;
12696 const double y1 = uvPnt( iSize-1, j ).y;
12697 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
12698 double y = y0 + x * (y1 - y0);
12699 uvPnt( i, j ).x = x;
12700 uvPnt( i, j ).y = y;
12704 // replace base nodes with target ones
12705 for ( i = 0; i < iSize; ++i )
12706 for ( j = 0; j < jSize; ++j )
12708 auto n2e = n2eMap.find( uvPnt( i, j ).node );
12709 uvPnt( i, j ).node = n2e->second->_nodes.back();
12715 //================================================================================
12717 * \brief Compute positions of nodes of 2D structured mesh using TFI
12719 //================================================================================
12721 bool _Mapper2D::ComputeNodePositions()
12723 if ( _quadPoints.uv_grid.empty() )
12726 size_t i, iSize = _quadPoints.iSize;
12727 size_t j, jSize = _quadPoints.jSize;
12729 SMESH_NodeXYZ a0 ( uvPnt( 0, 0 ).node );
12730 SMESH_NodeXYZ a1 ( uvPnt( iSize-1, 0 ).node );
12731 SMESH_NodeXYZ a2 ( uvPnt( iSize-1, jSize-1 ).node );
12732 SMESH_NodeXYZ a3 ( uvPnt( 0, jSize-1 ).node );
12734 for ( i = 1; i < iSize-1; ++i )
12736 SMESH_NodeXYZ p0 ( uvPnt( i, 0 ).node );
12737 SMESH_NodeXYZ p2 ( uvPnt( i, jSize-1 ).node );
12738 for ( j = 1; j < jSize-1; ++j )
12740 SMESH_NodeXYZ p1 ( uvPnt( iSize-1, j ).node );
12741 SMESH_NodeXYZ p3 ( uvPnt( 0, j ).node );
12742 double x = uvPnt( i, j ).x;
12743 double y = uvPnt( i, j ).y;
12745 gp_XYZ p = SMESH_MesherHelper::calcTFI( x, y, a0,a1,a2,a3, p0,p1,p2,p3 );
12746 const_cast< SMDS_MeshNode* >( uvPnt( i, j ).node )->setXYZ( p.X(), p.Y(), p.Z() );
12748 dumpMove( uvPnt( i, j ).node );
12754 //================================================================================
12756 * \brief Creates 2D and 1D elements on boundaries of new prisms
12758 //================================================================================
12760 bool _ViscousBuilder::addBoundaryElements(_SolidData& data)
12762 SMESH_MesherHelper helper( *_mesh );
12764 vector< const SMDS_MeshNode* > faceNodes;
12766 //for ( size_t i = 0; i < _sdVec.size(); ++i )
12768 //_SolidData& data = _sdVec[i];
12769 TopTools_IndexedMapOfShape geomEdges;
12770 TopExp::MapShapes( data._solid, TopAbs_EDGE, geomEdges );
12771 for ( int iE = 1; iE <= geomEdges.Extent(); ++iE )
12773 const TopoDS_Edge& E = TopoDS::Edge( geomEdges(iE));
12774 const TGeomID edgeID = getMeshDS()->ShapeToIndex( E );
12775 if ( data._noShrinkShapes.count( edgeID ))
12778 // Get _LayerEdge's based on E
12780 map< double, const SMDS_MeshNode* > u2nodes;
12781 if ( !SMESH_Algo::GetSortedNodesOnEdge( getMeshDS(), E, /*ignoreMedium=*/false, u2nodes))
12784 vector< _LayerEdge* > ledges; ledges.reserve( u2nodes.size() );
12785 TNode2Edge & n2eMap = data._n2eMap;
12786 map< double, const SMDS_MeshNode* >::iterator u2n = u2nodes.begin();
12788 //check if 2D elements are needed on E
12789 TNode2Edge::iterator n2e = n2eMap.find( u2n->second );
12790 if ( n2e == n2eMap.end() ) continue; // no layers on vertex
12791 ledges.push_back( n2e->second );
12793 if (( n2e = n2eMap.find( u2n->second )) == n2eMap.end() )
12794 continue; // no layers on E
12795 ledges.push_back( n2eMap[ u2n->second ]);
12797 const SMDS_MeshNode* tgtN0 = ledges[0]->_nodes.back();
12798 const SMDS_MeshNode* tgtN1 = ledges[1]->_nodes.back();
12799 int nbSharedPyram = 0;
12800 SMDS_ElemIteratorPtr vIt = tgtN1->GetInverseElementIterator(SMDSAbs_Volume);
12801 while ( vIt->more() )
12803 const SMDS_MeshElement* v = vIt->next();
12804 nbSharedPyram += int( v->GetNodeIndex( tgtN0 ) >= 0 );
12806 if ( nbSharedPyram > 1 )
12807 continue; // not free border of the pyramid
12810 faceNodes.push_back( ledges[0]->_nodes[0] );
12811 faceNodes.push_back( ledges[1]->_nodes[0] );
12812 if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
12813 if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
12815 if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
12816 continue; // faces already created
12818 for ( ++u2n; u2n != u2nodes.end(); ++u2n )
12819 ledges.push_back( n2eMap[ u2n->second ]);
12821 // Find out orientation and type of face to create
12823 bool reverse = false, isOnFace;
12826 map< TGeomID, TopoDS_Shape >::iterator e2f = data._shrinkShape2Shape.find( edgeID );
12827 if (( isOnFace = ( e2f != data._shrinkShape2Shape.end() )))
12829 F = e2f->second.Oriented( TopAbs_FORWARD );
12830 reverse = ( helper.GetSubShapeOri( F, E ) == TopAbs_REVERSED );
12831 if ( helper.GetSubShapeOri( data._solid, F ) == TopAbs_REVERSED )
12832 reverse = !reverse, F.Reverse();
12833 if ( helper.IsReversedSubMesh( TopoDS::Face(F) ))
12834 reverse = !reverse;
12836 else if ( !data._ignoreFaceIds.count( e2f->first ))
12838 // find FACE with layers sharing E
12839 PShapeIteratorPtr fIt = helper.GetAncestors( E, *_mesh, TopAbs_FACE, &data._solid );
12841 F = *( fIt->next() );
12843 // Find the sub-mesh to add new faces
12844 SMESHDS_SubMesh* sm = 0;
12846 sm = getMeshDS()->MeshElements( F );
12848 sm = data._proxyMesh->getFaceSubM( TopoDS::Face(F), /*create=*/true );
12850 return error("error in addBoundaryElements()", data._index);
12852 // Find a proxy sub-mesh of the FACE of an adjacent SOLID, which will use the new boundary
12853 // faces for 3D meshing (PAL23414)
12854 SMESHDS_SubMesh* adjSM = 0;
12857 const TGeomID faceID = sm->GetID();
12858 PShapeIteratorPtr soIt = helper.GetAncestors( F, *_mesh, TopAbs_SOLID );
12859 while ( const TopoDS_Shape* solid = soIt->next() )
12860 if ( !solid->IsSame( data._solid ))
12862 size_t iData = _solids.FindIndex( *solid ) - 1;
12863 if ( iData < _sdVec.size() &&
12864 _sdVec[ iData ]._ignoreFaceIds.count( faceID ) &&
12865 _sdVec[ iData ]._shrinkShape2Shape.count( edgeID ) == 0 )
12867 SMESH_ProxyMesh::SubMesh* proxySub =
12868 _sdVec[ iData ]._proxyMesh->getFaceSubM( TopoDS::Face( F ), /*create=*/false);
12869 if ( proxySub && proxySub->NbElements() > 0 )
12876 const int dj1 = reverse ? 0 : 1;
12877 const int dj2 = reverse ? 1 : 0;
12878 vector< const SMDS_MeshElement*> ff; // new faces row
12879 SMESHDS_Mesh* m = getMeshDS();
12880 for ( size_t j = 1; j < ledges.size(); ++j )
12882 vector< const SMDS_MeshNode*>& nn1 = ledges[j-dj1]->_nodes;
12883 vector< const SMDS_MeshNode*>& nn2 = ledges[j-dj2]->_nodes;
12884 ff.resize( std::max( nn1.size(), nn2.size() ), NULL );
12885 if ( nn1.size() == nn2.size() )
12888 for ( size_t z = 1; z < nn1.size(); ++z )
12889 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12891 for ( size_t z = 1; z < nn1.size(); ++z )
12892 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[z-1], nn2[z], nn1[z] ));
12894 else if ( nn1.size() == 1 )
12897 for ( size_t z = 1; z < nn2.size(); ++z )
12898 sm->AddElement( ff[z-1] = m->AddFace( nn1[0], nn2[z-1], nn2[z] ));
12900 for ( size_t z = 1; z < nn2.size(); ++z )
12901 sm->AddElement( new SMDS_FaceOfNodes( nn1[0], nn2[z-1], nn2[z] ));
12906 for ( size_t z = 1; z < nn1.size(); ++z )
12907 sm->AddElement( ff[z-1] = m->AddFace( nn1[z-1], nn2[0], nn1[z] ));
12909 for ( size_t z = 1; z < nn1.size(); ++z )
12910 sm->AddElement( new SMDS_FaceOfNodes( nn1[z-1], nn2[0], nn2[z] ));
12913 if ( adjSM ) // add faces to a proxy SM of the adjacent SOLID
12915 for ( size_t z = 0; z < ff.size(); ++z )
12917 adjSM->AddElement( ff[ z ]);
12923 for ( int isFirst = 0; isFirst < 2; ++isFirst )
12925 _LayerEdge* edge = isFirst ? ledges.front() : ledges.back();
12926 _EdgesOnShape* eos = data.GetShapeEdges( edge );
12927 if ( eos && eos->SWOLType() == TopAbs_EDGE )
12929 vector< const SMDS_MeshNode*>& nn = edge->_nodes;
12930 if ( nn.size() < 2 || nn[1]->NbInverseElements( SMDSAbs_Edge ) >= 2 )
12932 helper.SetSubShape( eos->_sWOL );
12933 helper.SetElementsOnShape( true );
12934 for ( size_t z = 1; z < nn.size(); ++z )
12935 helper.AddEdge( nn[z-1], nn[z] );
12939 } // loop on EDGE's
12940 } // loop on _SolidData's