1 // Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // SMESH SMESH : implementaion of SMESH idl descriptions
24 // File : StdMeshers_Hexa_3D.cxx
25 // Moved here from SMESH_Hexa_3D.cxx
26 // Author : Paul RASCLE, EDF
29 #include "StdMeshers_Hexa_3D.hxx"
31 #include "StdMeshers_CompositeHexa_3D.hxx"
32 #include "StdMeshers_FaceSide.hxx"
33 #include "StdMeshers_HexaFromSkin_3D.hxx"
34 #include "StdMeshers_Penta_3D.hxx"
35 #include "StdMeshers_Prism_3D.hxx"
36 #include "StdMeshers_Quadrangle_2D.hxx"
37 #include "StdMeshers_ViscousLayers.hxx"
39 #include "SMESH_Comment.hxx"
40 #include "SMESH_Gen.hxx"
41 #include "SMESH_Mesh.hxx"
42 #include "SMESH_MesherHelper.hxx"
43 #include "SMESH_subMesh.hxx"
45 #include "SMDS_MeshNode.hxx"
48 #include <TopExp_Explorer.hxx>
49 #include <TopTools_SequenceOfShape.hxx>
50 #include <TopTools_MapOfShape.hxx>
53 #include "utilities.h"
54 #include "Utils_ExceptHandlers.hxx"
56 typedef SMESH_Comment TComm;
60 static SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh &,
62 SMESH_ProxyMesh* proxyMesh=0);
64 static bool EvaluatePentahedralMesh(SMESH_Mesh &, const TopoDS_Shape &,
67 //=============================================================================
71 //=============================================================================
73 StdMeshers_Hexa_3D::StdMeshers_Hexa_3D(int hypId, int studyId, SMESH_Gen * gen)
74 :SMESH_3D_Algo(hypId, studyId, gen)
76 MESSAGE("StdMeshers_Hexa_3D::StdMeshers_Hexa_3D");
78 _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID); // 1 bit /shape type
79 _requireShape = false;
80 _compatibleHypothesis.push_back("ViscousLayers");
83 //=============================================================================
87 //=============================================================================
89 StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D()
91 MESSAGE("StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D");
94 //=============================================================================
96 * Retrieves defined hypotheses
98 //=============================================================================
100 bool StdMeshers_Hexa_3D::CheckHypothesis
102 const TopoDS_Shape& aShape,
103 SMESH_Hypothesis::Hypothesis_Status& aStatus)
105 // check nb of faces in the shape
107 aStatus = SMESH_Hypothesis::HYP_BAD_GEOMETRY;
109 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next())
116 _viscousLayersHyp = NULL;
118 const list<const SMESHDS_Hypothesis*>& hyps =
119 GetUsedHypothesis(aMesh, aShape, /*ignoreAuxiliary=*/false);
120 list <const SMESHDS_Hypothesis* >::const_iterator h = hyps.begin();
121 if ( h == hyps.end())
123 aStatus = SMESH_Hypothesis::HYP_OK;
127 // only StdMeshers_ViscousLayers can be used
129 for ( ; h != hyps.end(); ++h )
131 if ( !(_viscousLayersHyp = dynamic_cast< const StdMeshers_ViscousLayers*> ( *h )))
134 if ( !_viscousLayersHyp )
135 aStatus = HYP_INCOMPATIBLE;
137 error( _viscousLayersHyp->CheckHypothesis( aMesh, aShape, aStatus ));
139 return aStatus == HYP_OK;
144 //=============================================================================
146 typedef boost::shared_ptr< FaceQuadStruct > FaceQuadStructPtr;
148 // symbolic names of box sides
149 enum EBoxSides{ B_BOTTOM=0, B_RIGHT, B_TOP, B_LEFT, B_FRONT, B_BACK, B_NB_SIDES };
151 // symbolic names of sides of quadrangle
152 enum EQuadSides{ Q_BOTTOM=0, Q_RIGHT, Q_TOP, Q_LEFT, Q_NB_SIDES };
154 //=============================================================================
156 * \brief Container of nodes of structured mesh on a qudrangular geom FACE
161 FaceQuadStructPtr _quad;
163 // map of (node parameter on EDGE) to (column (vector) of nodes)
164 TParam2ColumnMap _u2nodesMap;
166 // node column's taken form _u2nodesMap taking into account sub-shape orientation
167 vector<TNodeColumn> _columns;
169 // geometry of a cube side
172 const SMDS_MeshNode* GetNode(int iCol, int iRow) const
174 return _columns[iCol][iRow];
176 gp_XYZ GetXYZ(int iCol, int iRow) const
178 return SMESH_TNodeXYZ( GetNode( iCol, iRow ));
182 //================================================================================
184 * \brief Convertor of a pair of integers to a sole index
189 _Indexer( int xSize, int ySize ): _xSize(xSize), _ySize(ySize) {}
190 int size() const { return _xSize * _ySize; }
191 int operator()(const int x, const int y) const { return y * _xSize + x; }
194 //================================================================================
196 * \brief Appends a range of node columns from a map to another map
198 template< class TMapIterator >
199 void append( TParam2ColumnMap& toMap, TMapIterator from, TMapIterator to )
201 const SMDS_MeshNode* lastNode = toMap.rbegin()->second[0];
202 const SMDS_MeshNode* firstNode = from->second[0];
203 if ( lastNode == firstNode )
205 double u = toMap.rbegin()->first;
206 for (; from != to; ++from )
209 TParam2ColumnMap::iterator u2nn = toMap.insert( toMap.end(), make_pair ( u, TNodeColumn()));
210 u2nn->second.swap( from->second );
214 //================================================================================
216 * \brief Finds FaceQuadStruct having a side equal to a given one and rearranges
217 * the found FaceQuadStruct::side to have the given side at a Q_BOTTOM place
219 FaceQuadStructPtr getQuadWithBottom( StdMeshers_FaceSidePtr side,
220 FaceQuadStructPtr quad[ 6 ])
222 FaceQuadStructPtr foundQuad;
223 for ( int i = 1; i < 6; ++i )
225 if ( !quad[i] ) continue;
226 for ( unsigned iS = 0; iS < quad[i]->side.size(); ++iS )
228 const StdMeshers_FaceSidePtr side2 = quad[i]->side[iS];
229 if (( side->FirstVertex().IsSame( side2->FirstVertex() ) ||
230 side->FirstVertex().IsSame( side2->LastVertex() ))
232 ( side->LastVertex().IsSame( side2->FirstVertex() ) ||
233 side->LastVertex().IsSame( side2->LastVertex() ))
236 if ( iS != Q_BOTTOM )
238 vector< FaceQuadStruct::Side > newSides;
239 for ( unsigned j = iS; j < quad[i]->side.size(); ++j )
240 newSides.push_back( quad[i]->side[j] );
241 for ( unsigned j = 0; j < iS; ++j )
242 newSides.push_back( quad[i]->side[j] );
243 quad[i]->side.swap( newSides );
245 foundQuad.swap(quad[i]);
252 //================================================================================
254 * \brief Returns true if the 1st base node of sideGrid1 belongs to sideGrid2
256 //================================================================================
258 bool beginsAtSide( const _FaceGrid& sideGrid1,
259 const _FaceGrid& sideGrid2,
260 SMESH_ProxyMesh::Ptr proxymesh )
262 const TNodeColumn& col0 = sideGrid2._u2nodesMap.begin()->second;
263 const TNodeColumn& col1 = sideGrid2._u2nodesMap.rbegin()->second;
264 const SMDS_MeshNode* n00 = col0.front();
265 const SMDS_MeshNode* n01 = col0.back();
266 const SMDS_MeshNode* n10 = col1.front();
267 const SMDS_MeshNode* n11 = col1.back();
268 const SMDS_MeshNode* n = (sideGrid1._u2nodesMap.begin()->second)[0];
271 n00 = proxymesh->GetProxyNode( n00 );
272 n10 = proxymesh->GetProxyNode( n10 );
273 n01 = proxymesh->GetProxyNode( n01 );
274 n11 = proxymesh->GetProxyNode( n11 );
275 n = proxymesh->GetProxyNode( n );
277 return ( n == n00 || n == n01 || n == n10 || n == n11 );
281 //=============================================================================
283 * Generates hexahedron mesh on hexaedron like form using algorithm from
284 * "Application de l'interpolation transfinie � la cr�ation de maillages
285 * C0 ou G1 continus sur des triangles, quadrangles, tetraedres, pentaedres
286 * et hexaedres d�form�s."
287 * Alain PERONNET - 8 janvier 1999
289 //=============================================================================
291 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh,
292 const TopoDS_Shape & aShape)
294 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
295 //Unexpect aCatch(SalomeException);
296 MESSAGE("StdMeshers_Hexa_3D::Compute");
297 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
299 // Shape verification
300 // ----------------------
302 // shape must be a solid (or a shell) with 6 faces
303 TopExp_Explorer exp(aShape,TopAbs_SHELL);
305 return error(COMPERR_BAD_SHAPE, "No SHELL in the geometry");
306 if ( exp.Next(), exp.More() )
307 return error(COMPERR_BAD_SHAPE, "More than one SHELL in the geometry");
309 TopTools_IndexedMapOfShape FF;
310 TopExp::MapShapes( aShape, TopAbs_FACE, FF);
311 if ( FF.Extent() != 6)
313 static StdMeshers_CompositeHexa_3D compositeHexa(_gen->GetANewId(), 0, _gen);
314 if ( !compositeHexa.Compute( aMesh, aShape ))
315 return error( compositeHexa.GetComputeError() );
319 // Find sides of a cube
320 // ---------------------
322 FaceQuadStructPtr quad[ 6 ];
323 StdMeshers_Quadrangle_2D quadAlgo( _gen->GetANewId(), GetStudyId(), _gen);
324 for ( int i = 0; i < 6; ++i )
326 if ( !( quad[i] = FaceQuadStructPtr( quadAlgo.CheckNbEdges( aMesh, FF( i+1 )))))
327 return error( quadAlgo.GetComputeError() );
328 if ( quad[i]->side.size() != 4 )
329 return error( COMPERR_BAD_SHAPE, "Not a quadrangular box side" );
332 _FaceGrid aCubeSide[ 6 ];
334 swap( aCubeSide[B_BOTTOM]._quad, quad[0] );
335 swap( aCubeSide[B_BOTTOM]._quad->side[ Q_RIGHT],// direct the normal of bottom quad inside cube
336 aCubeSide[B_BOTTOM]._quad->side[ Q_LEFT ] );
338 aCubeSide[B_FRONT]._quad = getQuadWithBottom( aCubeSide[B_BOTTOM]._quad->side[Q_BOTTOM], quad );
339 aCubeSide[B_RIGHT]._quad = getQuadWithBottom( aCubeSide[B_BOTTOM]._quad->side[Q_RIGHT ], quad );
340 aCubeSide[B_BACK ]._quad = getQuadWithBottom( aCubeSide[B_BOTTOM]._quad->side[Q_TOP ], quad );
341 aCubeSide[B_LEFT ]._quad = getQuadWithBottom( aCubeSide[B_BOTTOM]._quad->side[Q_LEFT ], quad );
342 if ( aCubeSide[B_FRONT ]._quad )
343 aCubeSide[B_TOP]._quad = getQuadWithBottom( aCubeSide[B_FRONT ]._quad->side[Q_TOP ], quad );
345 for ( int i = 1; i < 6; ++i )
346 if ( !aCubeSide[i]._quad )
347 return error( COMPERR_BAD_SHAPE );
349 // Make viscous layers
350 // --------------------
352 SMESH_ProxyMesh::Ptr proxymesh;
353 if ( _viscousLayersHyp )
355 proxymesh = _viscousLayersHyp->Compute( aMesh, aShape, /*makeN2NMap=*/ true );
360 // Check if there are triangles on cube sides
361 // -------------------------------------------
363 if ( aMesh.NbTriangles() > 0 )
365 for ( int i = 0; i < 6; ++i )
367 const TopoDS_Face& sideF = aCubeSide[i]._quad->face;
368 const SMESHDS_SubMesh* smDS =
369 proxymesh ? proxymesh->GetSubMesh( sideF ) : meshDS->MeshElements( sideF );
370 if ( !SMESH_MesherHelper::IsSameElemGeometry( smDS, SMDSGeom_QUADRANGLE,
371 /*nullSubMeshRes=*/false ))
373 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape, proxymesh.get());
379 // Check presence of regular grid mesh on FACEs of the cube
380 // ------------------------------------------------------------
382 // tool creating quadratic elements if needed
383 SMESH_MesherHelper helper (aMesh);
384 _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
386 for ( int i = 0; i < 6; ++i )
388 const TopoDS_Face& F = aCubeSide[i]._quad->face;
389 StdMeshers_FaceSidePtr baseQuadSide = aCubeSide[i]._quad->side[ Q_BOTTOM ];
390 list<TopoDS_Edge> baseEdges( baseQuadSide->Edges().begin(), baseQuadSide->Edges().end() );
392 // assure correctness of node positions on baseE:
393 // helper.GetNodeU() will fix positions if they are wrong
394 helper.ToFixNodeParameters( true );
395 for ( int iE = 0; iE < baseQuadSide->NbEdges(); ++iE )
397 const TopoDS_Edge& baseE = baseQuadSide->Edge( iE );
398 if ( SMESHDS_SubMesh* smDS = meshDS->MeshElements( baseE ))
401 helper.SetSubShape( baseE );
402 SMDS_ElemIteratorPtr eIt = smDS->GetElements();
403 while ( eIt->more() )
405 const SMDS_MeshElement* e = eIt->next();
406 // expect problems on a composite side
407 try { helper.GetNodeU( baseE, e->GetNode(0), e->GetNode(1), &ok); }
409 try { helper.GetNodeU( baseE, e->GetNode(1), e->GetNode(0), &ok); }
417 helper.LoadNodeColumns( aCubeSide[i]._u2nodesMap, F, baseEdges, meshDS, proxymesh.get());
420 // check if the loaded grid corresponds to nb of quadrangles on the FACE
421 const SMESHDS_SubMesh* faceSubMesh =
422 proxymesh ? proxymesh->GetSubMesh( F ) : meshDS->MeshElements( F );
423 const int nbQuads = faceSubMesh->NbElements();
424 const int nbHor = aCubeSide[i]._u2nodesMap.size() - 1;
425 const int nbVer = aCubeSide[i]._u2nodesMap.begin()->second.size() - 1;
426 ok = ( nbQuads == nbHor * nbVer );
430 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape, proxymesh.get());
435 // Orient loaded grids of cube sides along axis of the unitary cube coord system
437 isReverse[B_BOTTOM] = beginsAtSide( aCubeSide[B_BOTTOM], aCubeSide[B_RIGHT ], proxymesh );
438 isReverse[B_TOP ] = beginsAtSide( aCubeSide[B_TOP ], aCubeSide[B_RIGHT ], proxymesh );
439 isReverse[B_FRONT ] = beginsAtSide( aCubeSide[B_FRONT ], aCubeSide[B_RIGHT ], proxymesh );
440 isReverse[B_BACK ] = beginsAtSide( aCubeSide[B_BACK ], aCubeSide[B_RIGHT ], proxymesh );
441 isReverse[B_LEFT ] = beginsAtSide( aCubeSide[B_LEFT ], aCubeSide[B_BACK ], proxymesh );
442 isReverse[B_RIGHT ] = beginsAtSide( aCubeSide[B_RIGHT ], aCubeSide[B_BACK ], proxymesh );
443 for ( int i = 0; i < 6; ++i )
445 aCubeSide[i]._columns.resize( aCubeSide[i]._u2nodesMap.size() );
447 int iFwd = 0, iRev = aCubeSide[i]._columns.size()-1;
448 int* pi = isReverse[i] ? &iRev : &iFwd;
449 TParam2ColumnMap::iterator u2nn = aCubeSide[i]._u2nodesMap.begin();
450 for ( ; iFwd < aCubeSide[i]._columns.size(); --iRev, ++iFwd, ++u2nn )
451 aCubeSide[i]._columns[ *pi ].swap( u2nn->second );
453 aCubeSide[i]._u2nodesMap.clear();
457 for ( int i = 0; i < 6; ++i )
458 for ( unsigned j = 0; j < aCubeSide[i]._columns.size(); ++j)
459 for ( unsigned k = 0; k < aCubeSide[i]._columns[j].size(); ++k)
461 const SMDS_MeshNode* & n = aCubeSide[i]._columns[j][k];
462 n = proxymesh->GetProxyNode( n );
465 // 4) Create internal nodes of the cube
466 // -------------------------------------
468 helper.SetSubShape( aShape );
469 helper.SetElementsOnShape(true);
471 // shortcuts to sides
472 _FaceGrid* fBottom = & aCubeSide[ B_BOTTOM ];
473 _FaceGrid* fRight = & aCubeSide[ B_RIGHT ];
474 _FaceGrid* fTop = & aCubeSide[ B_TOP ];
475 _FaceGrid* fLeft = & aCubeSide[ B_LEFT ];
476 _FaceGrid* fFront = & aCubeSide[ B_FRONT ];
477 _FaceGrid* fBack = & aCubeSide[ B_BACK ];
479 // cube size measured in nb of nodes
480 int x, xSize = fBottom->_columns.size() , X = xSize - 1;
481 int y, ySize = fLeft->_columns.size() , Y = ySize - 1;
482 int z, zSize = fLeft->_columns[0].size(), Z = zSize - 1;
484 // columns of internal nodes "rising" from nodes of fBottom
485 _Indexer colIndex( xSize, ySize );
486 vector< vector< const SMDS_MeshNode* > > columns( colIndex.size() );
488 // fill node columns by front and back box sides
489 for ( x = 0; x < xSize; ++x ) {
490 vector< const SMDS_MeshNode* >& column0 = columns[ colIndex( x, 0 )];
491 vector< const SMDS_MeshNode* >& column1 = columns[ colIndex( x, Y )];
492 column0.resize( zSize );
493 column1.resize( zSize );
494 for ( z = 0; z < zSize; ++z ) {
495 column0[ z ] = fFront->GetNode( x, z );
496 column1[ z ] = fBack ->GetNode( x, z );
499 // fill node columns by left and right box sides
500 for ( y = 1; y < ySize-1; ++y ) {
501 vector< const SMDS_MeshNode* >& column0 = columns[ colIndex( 0, y )];
502 vector< const SMDS_MeshNode* >& column1 = columns[ colIndex( X, y )];
503 column0.resize( zSize );
504 column1.resize( zSize );
505 for ( z = 0; z < zSize; ++z ) {
506 column0[ z ] = fLeft ->GetNode( y, z );
507 column1[ z ] = fRight->GetNode( y, z );
510 // get nodes from top and bottom box sides
511 for ( x = 1; x < xSize-1; ++x ) {
512 for ( y = 1; y < ySize-1; ++y ) {
513 vector< const SMDS_MeshNode* >& column = columns[ colIndex( x, y )];
514 column.resize( zSize );
515 column.front() = fBottom->GetNode( x, y );
516 column.back() = fTop ->GetNode( x, y );
520 // projection points of the internal node on cube sub-shapes by which
521 // coordinates of the internal node are computed
522 vector<gp_XYZ> pointsOnShapes( SMESH_Block::ID_Shell );
524 // projections on vertices are constant
525 pointsOnShapes[ SMESH_Block::ID_V000 ] = fBottom->GetXYZ( 0, 0 );
526 pointsOnShapes[ SMESH_Block::ID_V100 ] = fBottom->GetXYZ( X, 0 );
527 pointsOnShapes[ SMESH_Block::ID_V010 ] = fBottom->GetXYZ( 0, Y );
528 pointsOnShapes[ SMESH_Block::ID_V110 ] = fBottom->GetXYZ( X, Y );
529 pointsOnShapes[ SMESH_Block::ID_V001 ] = fTop->GetXYZ( 0, 0 );
530 pointsOnShapes[ SMESH_Block::ID_V101 ] = fTop->GetXYZ( X, 0 );
531 pointsOnShapes[ SMESH_Block::ID_V011 ] = fTop->GetXYZ( 0, Y );
532 pointsOnShapes[ SMESH_Block::ID_V111 ] = fTop->GetXYZ( X, Y );
534 for ( x = 1; x < xSize-1; ++x )
536 gp_XYZ params; // normalized parameters of internal node within a unit box
537 params.SetCoord( 1, x / double(X) );
538 for ( y = 1; y < ySize-1; ++y )
540 params.SetCoord( 2, y / double(Y) );
541 // a column to fill in during z loop
542 vector< const SMDS_MeshNode* >& column = columns[ colIndex( x, y )];
543 // projection points on horizontal edges
544 pointsOnShapes[ SMESH_Block::ID_Ex00 ] = fBottom->GetXYZ( x, 0 );
545 pointsOnShapes[ SMESH_Block::ID_Ex10 ] = fBottom->GetXYZ( x, Y );
546 pointsOnShapes[ SMESH_Block::ID_E0y0 ] = fBottom->GetXYZ( 0, y );
547 pointsOnShapes[ SMESH_Block::ID_E1y0 ] = fBottom->GetXYZ( X, y );
548 pointsOnShapes[ SMESH_Block::ID_Ex01 ] = fTop->GetXYZ( x, 0 );
549 pointsOnShapes[ SMESH_Block::ID_Ex11 ] = fTop->GetXYZ( x, Y );
550 pointsOnShapes[ SMESH_Block::ID_E0y1 ] = fTop->GetXYZ( 0, y );
551 pointsOnShapes[ SMESH_Block::ID_E1y1 ] = fTop->GetXYZ( X, y );
552 // projection points on horizontal faces
553 pointsOnShapes[ SMESH_Block::ID_Fxy0 ] = fBottom->GetXYZ( x, y );
554 pointsOnShapes[ SMESH_Block::ID_Fxy1 ] = fTop ->GetXYZ( x, y );
555 for ( z = 1; z < zSize-1; ++z ) // z loop
557 params.SetCoord( 3, z / double(Z) );
558 // projection points on vertical edges
559 pointsOnShapes[ SMESH_Block::ID_E00z ] = fFront->GetXYZ( 0, z );
560 pointsOnShapes[ SMESH_Block::ID_E10z ] = fFront->GetXYZ( X, z );
561 pointsOnShapes[ SMESH_Block::ID_E01z ] = fBack->GetXYZ( 0, z );
562 pointsOnShapes[ SMESH_Block::ID_E11z ] = fBack->GetXYZ( X, z );
563 // projection points on vertical faces
564 pointsOnShapes[ SMESH_Block::ID_Fx0z ] = fFront->GetXYZ( x, z );
565 pointsOnShapes[ SMESH_Block::ID_Fx1z ] = fBack ->GetXYZ( x, z );
566 pointsOnShapes[ SMESH_Block::ID_F0yz ] = fLeft ->GetXYZ( y, z );
567 pointsOnShapes[ SMESH_Block::ID_F1yz ] = fRight->GetXYZ( y, z );
569 // compute internal node coordinates
571 SMESH_Block::ShellPoint( params, pointsOnShapes, coords );
572 column[ z ] = helper.AddNode( coords.X(), coords.Y(), coords.Z() );
578 // side data no more needed, free memory
579 for ( int i = 0; i < 6; ++i )
580 aCubeSide[i]._columns.clear();
582 // 5) Create hexahedrons
583 // ---------------------
585 for ( x = 0; x < xSize-1; ++x ) {
586 for ( y = 0; y < ySize-1; ++y ) {
587 vector< const SMDS_MeshNode* >& col00 = columns[ colIndex( x, y )];
588 vector< const SMDS_MeshNode* >& col10 = columns[ colIndex( x+1, y )];
589 vector< const SMDS_MeshNode* >& col01 = columns[ colIndex( x, y+1 )];
590 vector< const SMDS_MeshNode* >& col11 = columns[ colIndex( x+1, y+1 )];
591 for ( z = 0; z < zSize-1; ++z )
593 // bottom face normal of a hexa mush point outside the volume
594 helper.AddVolume(col00[z], col01[z], col11[z], col10[z],
595 col00[z+1], col01[z+1], col11[z+1], col10[z+1]);
602 //=============================================================================
606 //=============================================================================
608 bool StdMeshers_Hexa_3D::Evaluate(SMESH_Mesh & aMesh,
609 const TopoDS_Shape & aShape,
610 MapShapeNbElems& aResMap)
612 vector < SMESH_subMesh * >meshFaces;
613 TopTools_SequenceOfShape aFaces;
614 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
615 aFaces.Append(exp.Current());
616 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
618 meshFaces.push_back(aSubMesh);
620 if (meshFaces.size() != 6) {
621 //return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
622 static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
623 return compositeHexa.Evaluate(aMesh, aShape, aResMap);
628 //TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
629 TopoDS_Shape aFace = aFaces.Value(i+1);
630 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
632 std::vector<int> aResVec(SMDSEntity_Last);
633 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
634 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
635 aResMap.insert(std::make_pair(sm,aResVec));
636 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
637 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
640 string algoName = algo->GetName();
641 bool isAllQuad = false;
642 if (algoName == "Quadrangle_2D") {
643 MapShapeNbElemsItr anIt = aResMap.find(meshFaces[i]);
644 if( anIt == aResMap.end() ) continue;
645 std::vector<int> aVec = (*anIt).second;
646 int nbtri = Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
651 return EvaluatePentahedralMesh(aMesh, aShape, aResMap);
655 // find number of 1d elems for 1 face
657 TopTools_MapOfShape Edges1;
658 bool IsQuadratic = false;
660 for (TopExp_Explorer exp(aFaces.Value(1), TopAbs_EDGE); exp.More(); exp.Next()) {
661 Edges1.Add(exp.Current());
662 SMESH_subMesh *sm = aMesh.GetSubMesh(exp.Current());
664 MapShapeNbElemsItr anIt = aResMap.find(sm);
665 if( anIt == aResMap.end() ) continue;
666 std::vector<int> aVec = (*anIt).second;
667 nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
669 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
674 // find face opposite to 1 face
676 for(i=2; i<=6; i++) {
677 bool IsOpposite = true;
678 for(TopExp_Explorer exp(aFaces.Value(i), TopAbs_EDGE); exp.More(); exp.Next()) {
679 if( Edges1.Contains(exp.Current()) ) {
689 // find number of 2d elems on side faces
691 for(i=2; i<=6; i++) {
692 if( i == OppNum ) continue;
693 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[i-1] );
694 if( anIt == aResMap.end() ) continue;
695 std::vector<int> aVec = (*anIt).second;
696 nb2d += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
699 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[0] );
700 std::vector<int> aVec = (*anIt).second;
701 int nb2d_face0 = Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
702 int nb0d_face0 = aVec[SMDSEntity_Node];
704 std::vector<int> aResVec(SMDSEntity_Last);
705 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
707 aResVec[SMDSEntity_Quad_Hexa] = nb2d_face0 * ( nb2d/nb1d );
708 int nb1d_face0_int = ( nb2d_face0*4 - nb1d ) / 2;
709 aResVec[SMDSEntity_Node] = nb0d_face0 * ( 2*nb2d/nb1d - 1 ) - nb1d_face0_int * nb2d/nb1d;
712 aResVec[SMDSEntity_Node] = nb0d_face0 * ( nb2d/nb1d - 1 );
713 aResVec[SMDSEntity_Hexa] = nb2d_face0 * ( nb2d/nb1d );
715 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
716 aResMap.insert(std::make_pair(sm,aResVec));
721 //================================================================================
723 * \brief Computes hexahedral mesh from 2D mesh of block
725 //================================================================================
727 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh, SMESH_MesherHelper* aHelper)
729 static StdMeshers_HexaFromSkin_3D * algo = 0;
731 SMESH_Gen* gen = aMesh.GetGen();
732 algo = new StdMeshers_HexaFromSkin_3D( gen->GetANewId(), 0, gen );
734 algo->InitComputeError();
735 algo->Compute( aMesh, aHelper );
736 return error( algo->GetComputeError());
739 //================================================================================
741 * \brief Return true if the algorithm can mesh this shape
742 * \param [in] aShape - shape to check
743 * \param [in] toCheckAll - if true, this check returns OK if all shapes are OK,
744 * else, returns OK if at least one shape is OK
746 //================================================================================
748 bool StdMeshers_Hexa_3D::IsApplicable( const TopoDS_Shape & aShape, bool toCheckAll )
750 TopExp_Explorer exp0( aShape, TopAbs_SOLID );
751 if ( !exp0.More() ) return false;
753 for ( ; exp0.More(); exp0.Next() )
755 int nbFoundShells = 0;
756 TopExp_Explorer exp1( exp0.Current(), TopAbs_SHELL );
757 for ( ; exp1.More(); exp1.Next(), ++nbFoundShells)
758 if ( nbFoundShells == 2 ) break;
759 if ( nbFoundShells != 1 ) {
760 if ( toCheckAll ) return false;
763 exp1.Init( exp0.Current(), TopAbs_FACE );
764 int nbEdges = SMESH_MesherHelper::Count( exp1.Current(), TopAbs_EDGE, /*ignoreSame=*/true );
765 bool ok = ( nbEdges > 3 );
766 if ( toCheckAll && !ok ) return false;
767 if ( !toCheckAll && ok ) return true;
772 //=======================================================================
773 //function : ComputePentahedralMesh
775 //=======================================================================
777 SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh & aMesh,
778 const TopoDS_Shape & aShape,
779 SMESH_ProxyMesh* proxyMesh)
781 SMESH_ComputeErrorPtr err = SMESH_ComputeError::New();
784 err->myName = COMPERR_BAD_INPUT_MESH;
785 err->myComment = "Can't build pentahedral mesh on viscous layers";
789 StdMeshers_Penta_3D anAlgo;
791 bOK=anAlgo.Compute(aMesh, aShape);
793 err = anAlgo.GetComputeError();
795 if ( !bOK && anAlgo.ErrorStatus() == 5 )
797 static StdMeshers_Prism_3D * aPrism3D = 0;
799 SMESH_Gen* gen = aMesh.GetGen();
800 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
802 SMESH_Hypothesis::Hypothesis_Status aStatus;
803 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
804 aPrism3D->InitComputeError();
805 bOK = aPrism3D->Compute( aMesh, aShape );
806 err = aPrism3D->GetComputeError();
813 //=======================================================================
814 //function : EvaluatePentahedralMesh
816 //=======================================================================
818 bool EvaluatePentahedralMesh(SMESH_Mesh & aMesh,
819 const TopoDS_Shape & aShape,
820 MapShapeNbElems& aResMap)
822 StdMeshers_Penta_3D anAlgo;
823 bool bOK = anAlgo.Evaluate(aMesh, aShape, aResMap);
825 //err = anAlgo.GetComputeError();
826 //if ( !bOK && anAlgo.ErrorStatus() == 5 )
828 static StdMeshers_Prism_3D * aPrism3D = 0;
830 SMESH_Gen* gen = aMesh.GetGen();
831 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
833 SMESH_Hypothesis::Hypothesis_Status aStatus;
834 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
835 return aPrism3D->Evaluate(aMesh, aShape, aResMap);