1 // Copyright (C) 2007-2010 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.
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"
38 #include "SMESH_Gen.hxx"
39 #include "SMESH_Mesh.hxx"
40 #include "SMESH_subMesh.hxx"
41 #include "SMESH_Comment.hxx"
43 #include "SMDS_MeshElement.hxx"
44 #include "SMDS_MeshNode.hxx"
45 #include "SMDS_FacePosition.hxx"
46 #include "SMDS_VolumeTool.hxx"
47 #include "SMDS_VolumeOfNodes.hxx"
50 #include <TopExp_Explorer.hxx>
51 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
52 #include <TopTools_ListIteratorOfListOfShape.hxx>
53 #include <TopTools_ListOfShape.hxx>
54 #include <TopTools_SequenceOfShape.hxx>
55 #include <TopTools_MapOfShape.hxx>
57 #include <gp_Pnt2d.hxx>
59 #include "utilities.h"
60 #include "Utils_ExceptHandlers.hxx"
62 typedef SMESH_Comment TComm;
66 static SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh &,
67 const TopoDS_Shape &);
69 static bool EvaluatePentahedralMesh(SMESH_Mesh &, const TopoDS_Shape &,
72 //=============================================================================
76 //=============================================================================
78 StdMeshers_Hexa_3D::StdMeshers_Hexa_3D(int hypId, int studyId, SMESH_Gen * gen)
79 :SMESH_3D_Algo(hypId, studyId, gen)
81 MESSAGE("StdMeshers_Hexa_3D::StdMeshers_Hexa_3D");
83 _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID); // 1 bit /shape type
84 _requireShape = false;
87 //=============================================================================
91 //=============================================================================
93 StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D()
95 MESSAGE("StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D");
98 //================================================================================
100 * \brief Clear fields and return the argument
101 * \param res - the value to return
102 * \retval bool - the argument value
104 //================================================================================
106 bool StdMeshers_Hexa_3D::ClearAndReturn(FaceQuadStruct* theQuads[6], const bool res)
108 for (int i = 0; i < 6; i++) {
116 //=============================================================================
120 //=============================================================================
122 bool StdMeshers_Hexa_3D::CheckHypothesis
124 const TopoDS_Shape& aShape,
125 SMESH_Hypothesis::Hypothesis_Status& aStatus)
127 // check nb of faces in the shape
129 aStatus = SMESH_Hypothesis::HYP_BAD_GEOMETRY;
131 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next())
137 aStatus = SMESH_Hypothesis::HYP_OK;
141 //=======================================================================
142 //function : isCloser
144 //=======================================================================
146 inline bool isCloser(const int i, const int j, const int nbhoriz,
147 const FaceQuadStruct* quad, const gp_Pnt2d uv,
150 int ij = j * nbhoriz + i;
151 gp_Pnt2d uv2( quad->uv_grid[ij].u, quad->uv_grid[ij].v );
152 double dist = uv.SquareDistance( uv2 );
153 if ( dist < minDist ) {
160 //=======================================================================
162 //purpose : return i,j of the node
163 //=======================================================================
165 static bool findIJ (const SMDS_MeshNode* node, const FaceQuadStruct * quad, int& I, int& J)
167 const SMDS_FacePosition* fpos =
168 static_cast<const SMDS_FacePosition*>(node->GetPosition());
169 if ( ! fpos ) return false;
170 gp_Pnt2d uv( fpos->GetUParameter(), fpos->GetVParameter() );
172 double minDist = DBL_MAX;
173 const int nbhoriz = quad->side[0]->NbPoints();
174 const int nbvertic = quad->side[1]->NbPoints();
175 I = nbhoriz/2; J = nbvertic/2;
179 while ( I + 2 < nbhoriz && isCloser( I + 1, J, nbhoriz, quad, uv, minDist ))
182 while ( I - 1 > 0 && isCloser( I - 1, J, nbhoriz, quad, uv, minDist ))
184 if ( minDist < DBL_MIN )
187 while ( J + 2 < nbvertic && isCloser( I, J + 1, nbhoriz, quad, uv, minDist ))
190 while ( J - 1 > 0 && isCloser( I, J - 1, nbhoriz, quad, uv, minDist ))
192 if ( minDist < DBL_MIN )
195 } while ( I != oldI || J != oldJ );
197 if ( minDist > DBL_MIN ) {
198 for (int i = 1; i < nbhoriz - 1; i++)
199 for (int j = 1; j < nbvertic - 1; j++)
200 if ( isCloser( i, j, nbhoriz, quad, uv, minDist ))
207 //=============================================================================
209 * Hexahedron mesh on hexaedron like form
210 * -0. - shape and face mesh verification
211 * -1. - identify faces and vertices of the "cube"
212 * -2. - Algorithm from:
213 * "Application de l'interpolation transfinie a la creation de maillages
214 * C0 ou G1 continus sur des triangles, quadrangles, tetraedres, pentaedres
215 * et hexaedres deformes."
216 * Alain PERONNET - 8 janvier 1999
218 //=============================================================================
220 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh,
221 const TopoDS_Shape & aShape)// throw(SALOME_Exception)
223 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
224 //Unexpect aCatch(SalomeException);
225 MESSAGE("StdMeshers_Hexa_3D::Compute");
226 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
228 // 0. - shape and face mesh verification
229 // 0.1 - shape must be a solid (or a shell) with 6 faces
231 vector < SMESH_subMesh * >meshFaces;
232 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
233 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
235 meshFaces.push_back(aSubMesh);
237 if (meshFaces.size() != 6) {
238 //return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
239 static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
240 if ( !compositeHexa.Compute( aMesh, aShape ))
241 return error( compositeHexa.GetComputeError() );
245 // 0.2 - is each face meshed with Quadrangle_2D? (so, with a wire of 4 edges)
247 // tool for working with quadratic elements
248 SMESH_MesherHelper aTool (aMesh);
249 _quadraticMesh = aTool.IsQuadraticSubMesh(aShape);
252 typedef struct cubeStruct
262 faceQuadStruct* quad_X0;
263 faceQuadStruct* quad_X1;
264 faceQuadStruct* quad_Y0;
265 faceQuadStruct* quad_Y1;
266 faceQuadStruct* quad_Z0;
267 faceQuadStruct* quad_Z1;
268 Point3DStruct* np; // normalised 3D coordinates
274 FaceQuadStruct* aQuads[6];
275 for (int i = 0; i < 6; i++)
278 for (int i = 0; i < 6; i++)
280 TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
281 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
282 string algoName = algo->GetName();
283 bool isAllQuad = false;
284 if (algoName == "Quadrangle_2D") {
285 SMESHDS_SubMesh * sm = meshDS->MeshElements( aFace );
288 SMDS_ElemIteratorPtr eIt = sm->GetElements();
289 while ( isAllQuad && eIt->more() ) {
290 const SMDS_MeshElement* elem = eIt->next();
291 isAllQuad = ( elem->NbNodes()==4 ||(_quadraticMesh && elem->NbNodes()==8) );
296 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
297 return ClearAndReturn( aQuads, error(err));
299 StdMeshers_Quadrangle_2D *quadAlgo =
300 dynamic_cast < StdMeshers_Quadrangle_2D * >(algo);
303 aQuads[i] = quadAlgo->CheckAnd2Dcompute(aMesh, aFace, _quadraticMesh);
305 return error( quadAlgo->GetComputeError());
308 catch(SALOME_Exception & S_ex) {
309 return ClearAndReturn( aQuads, error(COMPERR_SLM_EXCEPTION,TComm(S_ex.what()) <<
310 " Raised by StdMeshers_Quadrangle_2D "
311 " on face #" << meshDS->ShapeToIndex( aFace )));
314 // 0.2.1 - number of points on the opposite edges must be the same
315 if (aQuads[i]->side[0]->NbPoints() != aQuads[i]->side[2]->NbPoints() ||
316 aQuads[i]->side[1]->NbPoints() != aQuads[i]->side[3]->NbPoints()
317 /*aQuads[i]->side[0]->NbEdges() != 1 ||
318 aQuads[i]->side[1]->NbEdges() != 1 ||
319 aQuads[i]->side[2]->NbEdges() != 1 ||
320 aQuads[i]->side[3]->NbEdges() != 1*/) {
321 MESSAGE("different number of points on the opposite edges of face " << i);
322 // Try to go into penta algorithm 'cause it has been improved.
323 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
324 return ClearAndReturn( aQuads, error(err));
328 // 1. - identify faces and vertices of the "cube"
329 // 1.1 - ancestor maps vertex->edges in the cube
331 // TopTools_IndexedDataMapOfShapeListOfShape MS;
332 // TopExp::MapShapesAndAncestors(aShape, TopAbs_VERTEX, TopAbs_EDGE, MS);
334 // 1.2 - first face is choosen as face Y=0 of the unit cube
336 const TopoDS_Shape & aFace = meshFaces[0]->GetSubShape();
337 //const TopoDS_Face & F = TopoDS::Face(aFace);
339 // 1.3 - identify the 4 vertices of the face Y=0: V000, V100, V101, V001
341 aCube.V000 = aQuads[0]->side[0]->FirstVertex(); // will be (0,0,0) on the unit cube
342 aCube.V100 = aQuads[0]->side[0]->LastVertex(); // will be (1,0,0) on the unit cube
343 aCube.V001 = aQuads[0]->side[2]->FirstVertex(); // will be (0,0,1) on the unit cube
344 aCube.V101 = aQuads[0]->side[2]->LastVertex(); // will be (1,0,1) on the unit cube
346 TopTools_IndexedMapOfShape MV0;
347 TopExp::MapShapes(aFace, TopAbs_VERTEX, MV0);
349 aCube.V010 = OppositeVertex( aCube.V000, MV0, aQuads);
350 aCube.V110 = OppositeVertex( aCube.V100, MV0, aQuads);
351 aCube.V011 = OppositeVertex( aCube.V001, MV0, aQuads);
352 aCube.V111 = OppositeVertex( aCube.V101, MV0, aQuads);
354 // 1.6 - find remaining faces given 4 vertices
357 int _indY1 = GetFaceIndex(aMesh, aShape, meshFaces,
358 aCube.V010, aCube.V011, aCube.V110, aCube.V111);
359 int _indZ0 = GetFaceIndex(aMesh, aShape, meshFaces,
360 aCube.V000, aCube.V010, aCube.V100, aCube.V110);
361 int _indZ1 = GetFaceIndex(aMesh, aShape, meshFaces,
362 aCube.V001, aCube.V011, aCube.V101, aCube.V111);
363 int _indX0 = GetFaceIndex(aMesh, aShape, meshFaces,
364 aCube.V000, aCube.V001, aCube.V010, aCube.V011);
365 int _indX1 = GetFaceIndex(aMesh, aShape, meshFaces,
366 aCube.V100, aCube.V101, aCube.V110, aCube.V111);
368 // IPAL21120: SIGSEGV on Meshing attached Compound with Automatic Hexadralization
369 if ( _indY1 < 1 || _indZ0 < 1 || _indZ1 < 1 || _indX0 < 1 || _indX1 < 1 )
370 return error(COMPERR_BAD_SHAPE);
372 aCube.quad_Y0 = aQuads[_indY0];
373 aCube.quad_Y1 = aQuads[_indY1];
374 aCube.quad_Z0 = aQuads[_indZ0];
375 aCube.quad_Z1 = aQuads[_indZ1];
376 aCube.quad_X0 = aQuads[_indX0];
377 aCube.quad_X1 = aQuads[_indX1];
379 // 1.7 - get convertion coefs from face 2D normalized to 3D normalized
381 Conv2DStruct cx0; // for face X=0
382 Conv2DStruct cx1; // for face X=1
388 GetConv2DCoefs(*aCube.quad_X0, meshFaces[_indX0]->GetSubShape(),
389 aCube.V000, aCube.V010, aCube.V011, aCube.V001, cx0);
390 GetConv2DCoefs(*aCube.quad_X1, meshFaces[_indX1]->GetSubShape(),
391 aCube.V100, aCube.V110, aCube.V111, aCube.V101, cx1);
392 GetConv2DCoefs(*aCube.quad_Y0, meshFaces[_indY0]->GetSubShape(),
393 aCube.V000, aCube.V100, aCube.V101, aCube.V001, cy0);
394 GetConv2DCoefs(*aCube.quad_Y1, meshFaces[_indY1]->GetSubShape(),
395 aCube.V010, aCube.V110, aCube.V111, aCube.V011, cy1);
396 GetConv2DCoefs(*aCube.quad_Z0, meshFaces[_indZ0]->GetSubShape(),
397 aCube.V000, aCube.V100, aCube.V110, aCube.V010, cz0);
398 GetConv2DCoefs(*aCube.quad_Z1, meshFaces[_indZ1]->GetSubShape(),
399 aCube.V001, aCube.V101, aCube.V111, aCube.V011, cz1);
401 // 1.8 - create a 3D structure for normalized values
403 int nbx = aCube.quad_Z0->side[0]->NbPoints();
404 if (cz0.a1 == 0.) nbx = aCube.quad_Z0->side[1]->NbPoints();
406 int nby = aCube.quad_X0->side[0]->NbPoints();
407 if (cx0.a1 == 0.) nby = aCube.quad_X0->side[1]->NbPoints();
409 int nbz = aCube.quad_Y0->side[0]->NbPoints();
410 if (cy0.a1 != 0.) nbz = aCube.quad_Y0->side[1]->NbPoints();
412 int i1, j1, nbxyz = nbx * nby * nbz;
413 Point3DStruct *np = new Point3DStruct[nbxyz];
415 aMesh.GetMeshDS()->incrementNodesCapacity(nbx * nby * nbz);
416 aMesh.GetMeshDS()->incrementCellsCapacity((nbx-1) * (nby-1) * (nbz-1));
418 // 1.9 - store node indexes of faces
421 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX0]->GetSubShape());
423 faceQuadStruct *quad = aCube.quad_X0;
424 int i = 0; // j = x/face , k = y/face
425 int nbdown = quad->side[0]->NbPoints();
426 int nbright = quad->side[1]->NbPoints();
428 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
431 const SMDS_MeshNode * node = itf->next();
432 if(aTool.IsMedium(node))
434 if ( !findIJ( node, quad, i1, j1 ))
435 return ClearAndReturn( aQuads, false );
436 int ij1 = j1 * nbdown + i1;
437 quad->uv_grid[ij1].node = node;
440 for (int i1 = 0; i1 < nbdown; i1++)
441 for (int j1 = 0; j1 < nbright; j1++) {
442 int ij1 = j1 * nbdown + i1;
443 int j = cx0.ia * i1 + cx0.ib * j1 + cx0.ic; // j = x/face
444 int k = cx0.ja * i1 + cx0.jb * j1 + cx0.jc; // k = y/face
445 int ijk = k * nbx * nby + j * nbx + i;
446 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
447 np[ijk].node = quad->uv_grid[ij1].node;
448 //SCRUTE(np[ijk].nodeId);
453 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX1]->GetSubShape());
455 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
457 faceQuadStruct *quad = aCube.quad_X1;
458 int i = nbx - 1; // j = x/face , k = y/face
459 int nbdown = quad->side[0]->NbPoints();
460 int nbright = quad->side[1]->NbPoints();
463 const SMDS_MeshNode * node = itf->next();
464 if(aTool.IsMedium(node))
466 if ( !findIJ( node, quad, i1, j1 ))
467 return ClearAndReturn( aQuads, false );
468 int ij1 = j1 * nbdown + i1;
469 quad->uv_grid[ij1].node = node;
472 for (int i1 = 0; i1 < nbdown; i1++)
473 for (int j1 = 0; j1 < nbright; j1++) {
474 int ij1 = j1 * nbdown + i1;
475 int j = cx1.ia * i1 + cx1.ib * j1 + cx1.ic; // j = x/face
476 int k = cx1.ja * i1 + cx1.jb * j1 + cx1.jc; // k = y/face
477 int ijk = k * nbx * nby + j * nbx + i;
478 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
479 np[ijk].node = quad->uv_grid[ij1].node;
480 //SCRUTE(np[ijk].nodeId);
485 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY0]->GetSubShape());
487 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
489 faceQuadStruct *quad = aCube.quad_Y0;
490 int j = 0; // i = x/face , k = y/face
491 int nbdown = quad->side[0]->NbPoints();
492 int nbright = quad->side[1]->NbPoints();
495 const SMDS_MeshNode * node = itf->next();
496 if(aTool.IsMedium(node))
498 if ( !findIJ( node, quad, i1, j1 ))
499 return ClearAndReturn( aQuads, false );
500 int ij1 = j1 * nbdown + i1;
501 quad->uv_grid[ij1].node = node;
504 for (int i1 = 0; i1 < nbdown; i1++)
505 for (int j1 = 0; j1 < nbright; j1++) {
506 int ij1 = j1 * nbdown + i1;
507 int i = cy0.ia * i1 + cy0.ib * j1 + cy0.ic; // i = x/face
508 int k = cy0.ja * i1 + cy0.jb * j1 + cy0.jc; // k = y/face
509 int ijk = k * nbx * nby + j * nbx + i;
510 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
511 np[ijk].node = quad->uv_grid[ij1].node;
512 //SCRUTE(np[ijk].nodeId);
517 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY1]->GetSubShape());
519 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
521 faceQuadStruct *quad = aCube.quad_Y1;
522 int j = nby - 1; // i = x/face , k = y/face
523 int nbdown = quad->side[0]->NbPoints();
524 int nbright = quad->side[1]->NbPoints();
527 const SMDS_MeshNode * node = itf->next();
528 if(aTool.IsMedium(node))
530 if ( !findIJ( node, quad, i1, j1 ))
531 return ClearAndReturn( aQuads, false );
532 int ij1 = j1 * nbdown + i1;
533 quad->uv_grid[ij1].node = node;
536 for (int i1 = 0; i1 < nbdown; i1++)
537 for (int j1 = 0; j1 < nbright; j1++) {
538 int ij1 = j1 * nbdown + i1;
539 int i = cy1.ia * i1 + cy1.ib * j1 + cy1.ic; // i = x/face
540 int k = cy1.ja * i1 + cy1.jb * j1 + cy1.jc; // k = y/face
541 int ijk = k * nbx * nby + j * nbx + i;
542 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
543 np[ijk].node = quad->uv_grid[ij1].node;
544 //SCRUTE(np[ijk].nodeId);
549 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ0]->GetSubShape());
551 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
553 faceQuadStruct *quad = aCube.quad_Z0;
554 int k = 0; // i = x/face , j = y/face
555 int nbdown = quad->side[0]->NbPoints();
556 int nbright = quad->side[1]->NbPoints();
559 const SMDS_MeshNode * node = itf->next();
560 if(aTool.IsMedium(node))
562 if ( !findIJ( node, quad, i1, j1 ))
563 return ClearAndReturn( aQuads, false );
564 int ij1 = j1 * nbdown + i1;
565 quad->uv_grid[ij1].node = node;
568 for (int i1 = 0; i1 < nbdown; i1++)
569 for (int j1 = 0; j1 < nbright; j1++) {
570 int ij1 = j1 * nbdown + i1;
571 int i = cz0.ia * i1 + cz0.ib * j1 + cz0.ic; // i = x/face
572 int j = cz0.ja * i1 + cz0.jb * j1 + cz0.jc; // j = y/face
573 int ijk = k * nbx * nby + j * nbx + i;
574 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
575 np[ijk].node = quad->uv_grid[ij1].node;
576 //SCRUTE(np[ijk].nodeId);
581 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ1]->GetSubShape());
583 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
585 faceQuadStruct *quad = aCube.quad_Z1;
586 int k = nbz - 1; // i = x/face , j = y/face
587 int nbdown = quad->side[0]->NbPoints();
588 int nbright = quad->side[1]->NbPoints();
591 const SMDS_MeshNode * node = itf->next();
592 if(aTool.IsMedium(node))
594 if ( !findIJ( node, quad, i1, j1 ))
595 return ClearAndReturn( aQuads, false );
596 int ij1 = j1 * nbdown + i1;
597 quad->uv_grid[ij1].node = node;
600 for (int i1 = 0; i1 < nbdown; i1++)
601 for (int j1 = 0; j1 < nbright; j1++) {
602 int ij1 = j1 * nbdown + i1;
603 int i = cz1.ia * i1 + cz1.ib * j1 + cz1.ic; // i = x/face
604 int j = cz1.ja * i1 + cz1.jb * j1 + cz1.jc; // j = y/face
605 int ijk = k * nbx * nby + j * nbx + i;
606 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
607 np[ijk].node = quad->uv_grid[ij1].node;
608 //SCRUTE(np[ijk].nodeId);
612 // 2.0 - for each node of the cube:
613 // - get the 8 points 3D = 8 vertices of the cube
614 // - get the 12 points 3D on the 12 edges of the cube
615 // - get the 6 points 3D on the 6 faces with their ID
616 // - compute the point 3D
617 // - store the point 3D in SMESHDS, store its ID in 3D structure
619 int shapeID = meshDS->ShapeToIndex( aShape );
621 Pt3 p000, p001, p010, p011, p100, p101, p110, p111;
622 Pt3 px00, px01, px10, px11;
623 Pt3 p0y0, p0y1, p1y0, p1y1;
624 Pt3 p00z, p01z, p10z, p11z;
625 Pt3 pxy0, pxy1, px0z, px1z, p0yz, p1yz;
627 GetPoint(p000, 0, 0, 0, nbx, nby, nbz, np, meshDS);
628 GetPoint(p001, 0, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
629 GetPoint(p010, 0, nby - 1, 0, nbx, nby, nbz, np, meshDS);
630 GetPoint(p011, 0, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
631 GetPoint(p100, nbx - 1, 0, 0, nbx, nby, nbz, np, meshDS);
632 GetPoint(p101, nbx - 1, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
633 GetPoint(p110, nbx - 1, nby - 1, 0, nbx, nby, nbz, np, meshDS);
634 GetPoint(p111, nbx - 1, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
636 for (int i = 1; i < nbx - 1; i++) {
637 for (int j = 1; j < nby - 1; j++) {
638 for (int k = 1; k < nbz - 1; k++) {
639 // *** seulement maillage regulier
640 // 12 points on edges
641 GetPoint(px00, i, 0, 0, nbx, nby, nbz, np, meshDS);
642 GetPoint(px01, i, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
643 GetPoint(px10, i, nby - 1, 0, nbx, nby, nbz, np, meshDS);
644 GetPoint(px11, i, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
646 GetPoint(p0y0, 0, j, 0, nbx, nby, nbz, np, meshDS);
647 GetPoint(p0y1, 0, j, nbz - 1, nbx, nby, nbz, np, meshDS);
648 GetPoint(p1y0, nbx - 1, j, 0, nbx, nby, nbz, np, meshDS);
649 GetPoint(p1y1, nbx - 1, j, nbz - 1, nbx, nby, nbz, np, meshDS);
651 GetPoint(p00z, 0, 0, k, nbx, nby, nbz, np, meshDS);
652 GetPoint(p01z, 0, nby - 1, k, nbx, nby, nbz, np, meshDS);
653 GetPoint(p10z, nbx - 1, 0, k, nbx, nby, nbz, np, meshDS);
654 GetPoint(p11z, nbx - 1, nby - 1, k, nbx, nby, nbz, np, meshDS);
656 // 12 points on faces
657 GetPoint(pxy0, i, j, 0, nbx, nby, nbz, np, meshDS);
658 GetPoint(pxy1, i, j, nbz - 1, nbx, nby, nbz, np, meshDS);
659 GetPoint(px0z, i, 0, k, nbx, nby, nbz, np, meshDS);
660 GetPoint(px1z, i, nby - 1, k, nbx, nby, nbz, np, meshDS);
661 GetPoint(p0yz, 0, j, k, nbx, nby, nbz, np, meshDS);
662 GetPoint(p1yz, nbx - 1, j, k, nbx, nby, nbz, np, meshDS);
664 int ijk = k * nbx * nby + j * nbx + i;
665 double x = double (i) / double (nbx - 1); // *** seulement
666 double y = double (j) / double (nby - 1); // *** maillage
667 double z = double (k) / double (nbz - 1); // *** regulier
670 for (int i = 0; i < 3; i++) {
671 X[i] = (1 - x) * p0yz[i] + x * p1yz[i]
672 + (1 - y) * px0z[i] + y * px1z[i]
673 + (1 - z) * pxy0[i] + z * pxy1[i]
674 - (1 - x) * ((1 - y) * p00z[i] + y * p01z[i])
675 - x * ((1 - y) * p10z[i] + y * p11z[i])
676 - (1 - y) * ((1 - z) * px00[i] + z * px01[i])
677 - y * ((1 - z) * px10[i] + z * px11[i])
678 - (1 - z) * ((1 - x) * p0y0[i] + x * p1y0[i])
679 - z * ((1 - x) * p0y1[i] + x * p1y1[i])
680 + (1 - x) * ((1 - y) * ((1 - z) * p000[i] + z * p001[i])
681 + y * ((1 - z) * p010[i] + z * p011[i]))
682 + x * ((1 - y) * ((1 - z) * p100[i] + z * p101[i])
683 + y * ((1 - z) * p110[i] + z * p111[i]));
686 SMDS_MeshNode * node = meshDS->AddNode(X[0], X[1], X[2]);
688 meshDS->SetNodeInVolume(node, shapeID);
693 // find orientation of furute volumes according to MED convention
694 vector< bool > forward( nbx * nby );
695 SMDS_VolumeTool vTool;
696 for (int i = 0; i < nbx - 1; i++) {
697 for (int j = 0; j < nby - 1; j++) {
698 int n1 = j * nbx + i;
699 int n2 = j * nbx + i + 1;
700 int n3 = (j + 1) * nbx + i + 1;
701 int n4 = (j + 1) * nbx + i;
702 int n5 = nbx * nby + j * nbx + i;
703 int n6 = nbx * nby + j * nbx + i + 1;
704 int n7 = nbx * nby + (j + 1) * nbx + i + 1;
705 int n8 = nbx * nby + (j + 1) * nbx + i;
707 SMDS_VolumeOfNodes tmpVol (np[n1].node,np[n2].node,np[n3].node,np[n4].node,
708 np[n5].node,np[n6].node,np[n7].node,np[n8].node);
709 vTool.Set( &tmpVol );
710 forward[ n1 ] = vTool.IsForward();
714 //2.1 - for each node of the cube (less 3 *1 Faces):
715 // - store hexahedron in SMESHDS
716 MESSAGE("Storing hexahedron into the DS");
717 for (int i = 0; i < nbx - 1; i++) {
718 for (int j = 0; j < nby - 1; j++) {
719 bool isForw = forward.at( j * nbx + i );
720 for (int k = 0; k < nbz - 1; k++) {
721 int n1 = k * nbx * nby + j * nbx + i;
722 int n2 = k * nbx * nby + j * nbx + i + 1;
723 int n3 = k * nbx * nby + (j + 1) * nbx + i + 1;
724 int n4 = k * nbx * nby + (j + 1) * nbx + i;
725 int n5 = (k + 1) * nbx * nby + j * nbx + i;
726 int n6 = (k + 1) * nbx * nby + j * nbx + i + 1;
727 int n7 = (k + 1) * nbx * nby + (j + 1) * nbx + i + 1;
728 int n8 = (k + 1) * nbx * nby + (j + 1) * nbx + i;
730 SMDS_MeshVolume * elt;
732 elt = aTool.AddVolume(np[n1].node, np[n2].node,
733 np[n3].node, np[n4].node,
734 np[n5].node, np[n6].node,
735 np[n7].node, np[n8].node);
738 elt = aTool.AddVolume(np[n1].node, np[n4].node,
739 np[n3].node, np[n2].node,
740 np[n5].node, np[n8].node,
741 np[n7].node, np[n6].node);
744 meshDS->SetMeshElementOnShape(elt, shapeID);
748 if ( np ) delete [] np;
749 return ClearAndReturn( aQuads, true );
753 //=============================================================================
757 //=============================================================================
759 bool StdMeshers_Hexa_3D::Evaluate(SMESH_Mesh & aMesh,
760 const TopoDS_Shape & aShape,
761 MapShapeNbElems& aResMap)
763 vector < SMESH_subMesh * >meshFaces;
764 TopTools_SequenceOfShape aFaces;
765 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
766 aFaces.Append(exp.Current());
767 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
769 meshFaces.push_back(aSubMesh);
771 if (meshFaces.size() != 6) {
772 //return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
773 static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
774 return compositeHexa.Evaluate(aMesh, aShape, aResMap);
779 //TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
780 TopoDS_Shape aFace = aFaces.Value(i+1);
781 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
783 std::vector<int> aResVec(SMDSEntity_Last);
784 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
785 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
786 aResMap.insert(std::make_pair(sm,aResVec));
787 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
788 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
791 string algoName = algo->GetName();
792 bool isAllQuad = false;
793 if (algoName == "Quadrangle_2D") {
794 MapShapeNbElemsItr anIt = aResMap.find(meshFaces[i]);
795 if( anIt == aResMap.end() ) continue;
796 std::vector<int> aVec = (*anIt).second;
797 int nbtri = Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
802 return EvaluatePentahedralMesh(aMesh, aShape, aResMap);
806 // find number of 1d elems for 1 face
808 TopTools_MapOfShape Edges1;
809 bool IsQuadratic = false;
811 for (TopExp_Explorer exp(aFaces.Value(1), TopAbs_EDGE); exp.More(); exp.Next()) {
812 Edges1.Add(exp.Current());
813 SMESH_subMesh *sm = aMesh.GetSubMesh(exp.Current());
815 MapShapeNbElemsItr anIt = aResMap.find(sm);
816 if( anIt == aResMap.end() ) continue;
817 std::vector<int> aVec = (*anIt).second;
818 nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
820 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
825 // find face opposite to 1 face
827 for(i=2; i<=6; i++) {
828 bool IsOpposite = true;
829 for(TopExp_Explorer exp(aFaces.Value(i), TopAbs_EDGE); exp.More(); exp.Next()) {
830 if( Edges1.Contains(exp.Current()) ) {
840 // find number of 2d elems on side faces
842 for(i=2; i<=6; i++) {
843 if( i == OppNum ) continue;
844 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[i-1] );
845 if( anIt == aResMap.end() ) continue;
846 std::vector<int> aVec = (*anIt).second;
847 nb2d += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
850 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[0] );
851 std::vector<int> aVec = (*anIt).second;
852 int nb2d_face0 = Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
853 int nb0d_face0 = aVec[SMDSEntity_Node];
855 std::vector<int> aResVec(SMDSEntity_Last);
856 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
858 aResVec[SMDSEntity_Quad_Hexa] = nb2d_face0 * ( nb2d/nb1d );
859 int nb1d_face0_int = ( nb2d_face0*4 - nb1d ) / 2;
860 aResVec[SMDSEntity_Node] = nb0d_face0 * ( 2*nb2d/nb1d - 1 ) - nb1d_face0_int * nb2d/nb1d;
863 aResVec[SMDSEntity_Node] = nb0d_face0 * ( nb2d/nb1d - 1 );
864 aResVec[SMDSEntity_Hexa] = nb2d_face0 * ( nb2d/nb1d );
866 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
867 aResMap.insert(std::make_pair(sm,aResVec));
872 //================================================================================
874 * \brief Computes hexahedral mesh from 2D mesh of block
876 //================================================================================
878 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh, SMESH_MesherHelper* aHelper)
880 static StdMeshers_HexaFromSkin_3D * algo = 0;
882 SMESH_Gen* gen = aMesh.GetGen();
883 algo = new StdMeshers_HexaFromSkin_3D( gen->GetANewId(), 0, gen );
885 algo->InitComputeError();
886 algo->Compute( aMesh, aHelper );
887 return error( algo->GetComputeError());
890 //=============================================================================
894 //=============================================================================
896 void StdMeshers_Hexa_3D::GetPoint(Pt3 p, int i, int j, int k, int nbx, int nby, int nbz,
897 Point3DStruct * np, const SMESHDS_Mesh * meshDS)
899 int ijk = k * nbx * nby + j * nbx + i;
900 const SMDS_MeshNode * node = np[ijk].node;
904 //MESSAGE(" "<<i<<" "<<j<<" "<<k<<" "<<p[0]<<" "<<p[1]<<" "<<p[2]);
907 //=============================================================================
911 //=============================================================================
913 int StdMeshers_Hexa_3D::GetFaceIndex(SMESH_Mesh & aMesh,
914 const TopoDS_Shape & aShape,
915 const vector < SMESH_subMesh * >&meshFaces,
916 const TopoDS_Vertex & V0,
917 const TopoDS_Vertex & V1,
918 const TopoDS_Vertex & V2, const TopoDS_Vertex & V3)
920 //MESSAGE("StdMeshers_Hexa_3D::GetFaceIndex");
922 for (int i = 1; i < 6; i++)
924 const TopoDS_Shape & aFace = meshFaces[i]->GetSubShape();
925 //const TopoDS_Face& F = TopoDS::Face(aFace);
926 TopTools_IndexedMapOfShape M;
927 TopExp::MapShapes(aFace, TopAbs_VERTEX, M);
928 bool verticesInShape = false;
933 verticesInShape = true;
940 //IPAL21120 ASSERT(faceIndex > 0);
945 //=============================================================================
949 //=============================================================================
952 StdMeshers_Hexa_3D::EdgeNotInFace(SMESH_Mesh & aMesh,
953 const TopoDS_Shape & aShape,
954 const TopoDS_Face & aFace,
955 const TopoDS_Vertex & aVertex,
956 const TopTools_IndexedDataMapOfShapeListOfShape & MS)
958 //MESSAGE("StdMeshers_Hexa_3D::EdgeNotInFace");
959 TopTools_IndexedDataMapOfShapeListOfShape MF;
960 TopExp::MapShapesAndAncestors(aFace, TopAbs_VERTEX, TopAbs_EDGE, MF);
961 const TopTools_ListOfShape & ancestorsInSolid = MS.FindFromKey(aVertex);
962 const TopTools_ListOfShape & ancestorsInFace = MF.FindFromKey(aVertex);
963 // SCRUTE(ancestorsInSolid.Extent());
964 // SCRUTE(ancestorsInFace.Extent());
965 ASSERT(ancestorsInSolid.Extent() == 6); // 6 (edges doublees)
966 ASSERT(ancestorsInFace.Extent() == 2);
970 TopTools_ListIteratorOfListOfShape its(ancestorsInSolid);
971 for (; its.More(); its.Next())
973 TopoDS_Shape ancestor = its.Value();
974 TopTools_ListIteratorOfListOfShape itf(ancestorsInFace);
975 bool isInFace = false;
976 for (; itf.More(); itf.Next())
978 TopoDS_Shape ancestorInFace = itf.Value();
979 if (ancestorInFace.IsSame(ancestor))
987 E = TopoDS::Edge(ancestor);
994 //=============================================================================
998 //=============================================================================
1000 void StdMeshers_Hexa_3D::GetConv2DCoefs(const faceQuadStruct & quad,
1001 const TopoDS_Shape & aShape,
1002 const TopoDS_Vertex & V0,
1003 const TopoDS_Vertex & V1,
1004 const TopoDS_Vertex & V2, const TopoDS_Vertex & V3, Conv2DStruct & conv)
1006 // MESSAGE("StdMeshers_Hexa_3D::GetConv2DCoefs");
1007 // const TopoDS_Face & F = TopoDS::Face(aShape);
1008 // TopoDS_Edge E = quad.edge[0];
1010 // Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
1011 // TopoDS_Vertex VFirst, VLast;
1012 // TopExp::Vertices(E, VFirst, VLast); // corresponds to f and l
1013 // bool isForward = (((l - f) * (quad.last[0] - quad.first[0])) > 0);
1014 TopoDS_Vertex VA, VB;
1025 VA = quad.side[0]->FirstVertex();
1026 VB = quad.side[0]->LastVertex();
1028 int a1, b1, c1, a2, b2, c2;
1029 if (VA.IsSame(V0)) {
1041 ASSERT(VB.IsSame(V3));
1050 if (VA.IsSame(V1)) {
1062 ASSERT(VB.IsSame(V0));
1071 if (VA.IsSame(V2)) {
1083 ASSERT(VB.IsSame(V1));
1092 if (VA.IsSame(V3)) {
1104 ASSERT(VB.IsSame(V2));
1113 // MESSAGE("X = " << c1 << "+ " << a1 << "*x + " << b1 << "*y");
1114 // MESSAGE("Y = " << c2 << "+ " << a2 << "*x + " << b2 << "*y");
1122 int nbdown = quad.side[0]->NbPoints();
1123 int nbright = quad.side[1]->NbPoints();
1127 int (c1 * a1 * a1) * (nbdown - 1) + int (c1 * b1 * b1) * (nbright - 1);
1131 int (c2 * a2 * a2) * (nbdown - 1) + int (c2 * b2 * b2) * (nbright - 1);
1132 // MESSAGE("I " << conv.ia << " " << conv.ib << " " << conv.ic);
1133 // MESSAGE("J " << conv.ja << " " << conv.jb << " " << conv.jc);
1136 //================================================================================
1138 * \brief Find a vertex opposite to the given vertex of aQuads[0]
1139 * \param aVertex - the vertex
1140 * \param aFace - the face aVertex belongs to
1141 * \param aQuads - quads
1142 * \retval TopoDS_Vertex - found vertex
1144 //================================================================================
1146 TopoDS_Vertex StdMeshers_Hexa_3D::OppositeVertex(const TopoDS_Vertex& aVertex,
1147 const TopTools_IndexedMapOfShape& aQuads0Vertices,
1148 FaceQuadStruct* aQuads[6])
1151 for ( i = 1; i < 6; ++i )
1153 TopoDS_Vertex VV[] = { aQuads[i]->side[0]->FirstVertex(),
1154 aQuads[i]->side[0]->LastVertex() ,
1155 aQuads[i]->side[2]->LastVertex() ,
1156 aQuads[i]->side[2]->FirstVertex() };
1157 for ( j = 0; j < 4; ++j )
1158 if ( aVertex.IsSame( VV[ j ]))
1161 int jPrev = j ? j - 1 : 3;
1162 int jNext = (j + 1) % 4;
1163 if ( aQuads0Vertices.Contains( VV[ jPrev ] ))
1169 return TopoDS_Vertex();
1172 //modified by NIZNHY-PKV Wed Nov 17 15:34:13 2004 f
1173 ///////////////////////////////////////////////////////////////////////////////
1175 //#include <stdio.h>
1177 //=======================================================================
1178 //function : ComputePentahedralMesh
1180 //=======================================================================
1182 SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh & aMesh,
1183 const TopoDS_Shape & aShape)
1185 //printf(" ComputePentahedralMesh HERE\n");
1188 SMESH_ComputeErrorPtr err = SMESH_ComputeError::New();
1190 StdMeshers_Penta_3D anAlgo;
1192 bOK=anAlgo.Compute(aMesh, aShape);
1194 err = anAlgo.GetComputeError();
1196 if ( !bOK && anAlgo.ErrorStatus() == 5 )
1198 static StdMeshers_Prism_3D * aPrism3D = 0;
1200 SMESH_Gen* gen = aMesh.GetGen();
1201 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
1203 SMESH_Hypothesis::Hypothesis_Status aStatus;
1204 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
1205 aPrism3D->InitComputeError();
1206 bOK = aPrism3D->Compute( aMesh, aShape );
1207 err = aPrism3D->GetComputeError();
1214 //=======================================================================
1215 //function : EvaluatePentahedralMesh
1217 //=======================================================================
1219 bool EvaluatePentahedralMesh(SMESH_Mesh & aMesh,
1220 const TopoDS_Shape & aShape,
1221 MapShapeNbElems& aResMap)
1223 StdMeshers_Penta_3D anAlgo;
1224 bool bOK = anAlgo.Evaluate(aMesh, aShape, aResMap);
1226 //err = anAlgo.GetComputeError();
1227 //if ( !bOK && anAlgo.ErrorStatus() == 5 )
1229 static StdMeshers_Prism_3D * aPrism3D = 0;
1231 SMESH_Gen* gen = aMesh.GetGen();
1232 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
1234 SMESH_Hypothesis::Hypothesis_Status aStatus;
1235 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
1236 return aPrism3D->Evaluate(aMesh, aShape, aResMap);