1 // Copyright (C) 2007-2008 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
22 // SMESH SMESH : implementaion of SMESH idl descriptions
23 // File : StdMeshers_Hexa_3D.cxx
24 // Moved here from SMESH_Hexa_3D.cxx
25 // Author : Paul RASCLE, EDF
28 #include "StdMeshers_Hexa_3D.hxx"
30 #include "StdMeshers_CompositeHexa_3D.hxx"
31 #include "StdMeshers_FaceSide.hxx"
32 #include "StdMeshers_HexaFromSkin_3D.hxx"
33 #include "StdMeshers_Penta_3D.hxx"
34 #include "StdMeshers_Prism_3D.hxx"
35 #include "StdMeshers_Quadrangle_2D.hxx"
37 #include "SMESH_Gen.hxx"
38 #include "SMESH_Mesh.hxx"
39 #include "SMESH_subMesh.hxx"
40 #include "SMESH_Comment.hxx"
42 #include "SMDS_MeshElement.hxx"
43 #include "SMDS_MeshNode.hxx"
44 #include "SMDS_FacePosition.hxx"
45 #include "SMDS_VolumeTool.hxx"
46 #include "SMDS_VolumeOfNodes.hxx"
49 #include <TopExp_Explorer.hxx>
50 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
51 #include <TopTools_ListIteratorOfListOfShape.hxx>
52 #include <TopTools_ListOfShape.hxx>
53 #include <TopTools_SequenceOfShape.hxx>
54 #include <TopTools_MapOfShape.hxx>
56 #include <gp_Pnt2d.hxx>
58 #include "utilities.h"
59 #include "Utils_ExceptHandlers.hxx"
61 typedef SMESH_Comment TComm;
65 static SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh &,
66 const TopoDS_Shape &);
68 static bool EvaluatePentahedralMesh(SMESH_Mesh &, const TopoDS_Shape &,
71 //=============================================================================
75 //=============================================================================
77 StdMeshers_Hexa_3D::StdMeshers_Hexa_3D(int hypId, int studyId, SMESH_Gen * gen)
78 :SMESH_3D_Algo(hypId, studyId, gen)
80 MESSAGE("StdMeshers_Hexa_3D::StdMeshers_Hexa_3D");
82 _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID); // 1 bit /shape type
83 _requireShape = false;
86 //=============================================================================
90 //=============================================================================
92 StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D()
94 MESSAGE("StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D");
97 //================================================================================
99 * \brief Clear fields and return the argument
100 * \param res - the value to return
101 * \retval bool - the argument value
103 //================================================================================
105 bool StdMeshers_Hexa_3D::ClearAndReturn(FaceQuadStruct* theQuads[6], const bool res)
107 for (int i = 0; i < 6; i++) {
115 //=============================================================================
119 //=============================================================================
121 bool StdMeshers_Hexa_3D::CheckHypothesis
123 const TopoDS_Shape& aShape,
124 SMESH_Hypothesis::Hypothesis_Status& aStatus)
126 // check nb of faces in the shape
128 aStatus = SMESH_Hypothesis::HYP_BAD_GEOMETRY;
130 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next())
136 aStatus = SMESH_Hypothesis::HYP_OK;
140 //=======================================================================
141 //function : isCloser
143 //=======================================================================
145 inline bool isCloser(const int i, const int j, const int nbhoriz,
146 const FaceQuadStruct* quad, const gp_Pnt2d uv,
149 int ij = j * nbhoriz + i;
150 gp_Pnt2d uv2( quad->uv_grid[ij].u, quad->uv_grid[ij].v );
151 double dist = uv.SquareDistance( uv2 );
152 if ( dist < minDist ) {
159 //=======================================================================
161 //purpose : return i,j of the node
162 //=======================================================================
164 static bool findIJ (const SMDS_MeshNode* node, const FaceQuadStruct * quad, int& I, int& J)
166 const SMDS_FacePosition* fpos =
167 static_cast<const SMDS_FacePosition*>(node->GetPosition().get());
168 if ( ! fpos ) return false;
169 gp_Pnt2d uv( fpos->GetUParameter(), fpos->GetVParameter() );
171 double minDist = DBL_MAX;
172 const int nbhoriz = quad->side[0]->NbPoints();
173 const int nbvertic = quad->side[1]->NbPoints();
174 I = nbhoriz/2; J = nbvertic/2;
178 while ( I + 2 < nbhoriz && isCloser( I + 1, J, nbhoriz, quad, uv, minDist ))
181 while ( I - 1 > 0 && isCloser( I - 1, J, nbhoriz, quad, uv, minDist ))
183 if ( minDist < DBL_MIN )
186 while ( J + 2 < nbvertic && isCloser( I, J + 1, nbhoriz, quad, uv, minDist ))
189 while ( J - 1 > 0 && isCloser( I, J - 1, nbhoriz, quad, uv, minDist ))
191 if ( minDist < DBL_MIN )
194 } while ( I != oldI || J != oldJ );
196 if ( minDist > DBL_MIN ) {
197 for (int i = 1; i < nbhoriz - 1; i++)
198 for (int j = 1; j < nbvertic - 1; j++)
199 if ( isCloser( i, j, nbhoriz, quad, uv, minDist ))
206 //=============================================================================
208 * Hexahedron mesh on hexaedron like form
209 * -0. - shape and face mesh verification
210 * -1. - identify faces and vertices of the "cube"
211 * -2. - Algorithm from:
212 * "Application de l'interpolation transfinie à la création de maillages
213 * C0 ou G1 continus sur des triangles, quadrangles, tetraedres, pentaedres
214 * et hexaedres déformés."
215 * Alain PERONNET - 8 janvier 1999
217 //=============================================================================
219 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh,
220 const TopoDS_Shape & aShape)// throw(SALOME_Exception)
222 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
223 //Unexpect aCatch(SalomeException);
224 MESSAGE("StdMeshers_Hexa_3D::Compute");
225 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
227 // 0. - shape and face mesh verification
228 // 0.1 - shape must be a solid (or a shell) with 6 faces
230 vector < SMESH_subMesh * >meshFaces;
231 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
232 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
234 meshFaces.push_back(aSubMesh);
236 if (meshFaces.size() != 6) {
237 //return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
238 static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
239 if ( !compositeHexa.Compute( aMesh, aShape ))
240 return error( compositeHexa.GetComputeError() );
244 // 0.2 - is each face meshed with Quadrangle_2D? (so, with a wire of 4 edges)
246 // tool for working with quadratic elements
247 SMESH_MesherHelper aTool (aMesh);
248 _quadraticMesh = aTool.IsQuadraticSubMesh(aShape);
251 typedef struct cubeStruct
261 faceQuadStruct* quad_X0;
262 faceQuadStruct* quad_X1;
263 faceQuadStruct* quad_Y0;
264 faceQuadStruct* quad_Y1;
265 faceQuadStruct* quad_Z0;
266 faceQuadStruct* quad_Z1;
267 Point3DStruct* np; // normalised 3D coordinates
273 FaceQuadStruct* aQuads[6];
274 for (int i = 0; i < 6; i++)
277 for (int i = 0; i < 6; i++)
279 TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
280 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
281 string algoName = algo->GetName();
282 bool isAllQuad = false;
283 if (algoName == "Quadrangle_2D") {
284 SMESHDS_SubMesh * sm = meshDS->MeshElements( aFace );
287 SMDS_ElemIteratorPtr eIt = sm->GetElements();
288 while ( isAllQuad && eIt->more() ) {
289 const SMDS_MeshElement* elem = eIt->next();
290 isAllQuad = ( elem->NbNodes()==4 ||(_quadraticMesh && elem->NbNodes()==8) );
295 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
296 return ClearAndReturn( aQuads, error(err));
298 StdMeshers_Quadrangle_2D *quadAlgo =
299 dynamic_cast < StdMeshers_Quadrangle_2D * >(algo);
302 aQuads[i] = quadAlgo->CheckAnd2Dcompute(aMesh, aFace, _quadraticMesh);
304 return error( quadAlgo->GetComputeError());
307 catch(SALOME_Exception & S_ex) {
308 return ClearAndReturn( aQuads, error(COMPERR_SLM_EXCEPTION,TComm(S_ex.what()) <<
309 " Raised by StdMeshers_Quadrangle_2D "
310 " on face #" << meshDS->ShapeToIndex( aFace )));
313 // 0.2.1 - number of points on the opposite edges must be the same
314 if (aQuads[i]->side[0]->NbPoints() != aQuads[i]->side[2]->NbPoints() ||
315 aQuads[i]->side[1]->NbPoints() != aQuads[i]->side[3]->NbPoints()
316 /*aQuads[i]->side[0]->NbEdges() != 1 ||
317 aQuads[i]->side[1]->NbEdges() != 1 ||
318 aQuads[i]->side[2]->NbEdges() != 1 ||
319 aQuads[i]->side[3]->NbEdges() != 1*/) {
320 MESSAGE("different number of points on the opposite edges of face " << i);
321 // Try to go into penta algorithm 'cause it has been improved.
322 SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
323 return ClearAndReturn( aQuads, error(err));
327 // 1. - identify faces and vertices of the "cube"
328 // 1.1 - ancestor maps vertex->edges in the cube
330 // TopTools_IndexedDataMapOfShapeListOfShape MS;
331 // TopExp::MapShapesAndAncestors(aShape, TopAbs_VERTEX, TopAbs_EDGE, MS);
333 // 1.2 - first face is choosen as face Y=0 of the unit cube
335 const TopoDS_Shape & aFace = meshFaces[0]->GetSubShape();
336 //const TopoDS_Face & F = TopoDS::Face(aFace);
338 // 1.3 - identify the 4 vertices of the face Y=0: V000, V100, V101, V001
340 aCube.V000 = aQuads[0]->side[0]->FirstVertex(); // will be (0,0,0) on the unit cube
341 aCube.V100 = aQuads[0]->side[0]->LastVertex(); // will be (1,0,0) on the unit cube
342 aCube.V001 = aQuads[0]->side[2]->FirstVertex(); // will be (0,0,1) on the unit cube
343 aCube.V101 = aQuads[0]->side[2]->LastVertex(); // will be (1,0,1) on the unit cube
345 TopTools_IndexedMapOfShape MV0;
346 TopExp::MapShapes(aFace, TopAbs_VERTEX, MV0);
348 aCube.V010 = OppositeVertex( aCube.V000, MV0, aQuads);
349 aCube.V110 = OppositeVertex( aCube.V100, MV0, aQuads);
350 aCube.V011 = OppositeVertex( aCube.V001, MV0, aQuads);
351 aCube.V111 = OppositeVertex( aCube.V101, MV0, aQuads);
353 // 1.6 - find remaining faces given 4 vertices
356 int _indY1 = GetFaceIndex(aMesh, aShape, meshFaces,
357 aCube.V010, aCube.V011, aCube.V110, aCube.V111);
358 int _indZ0 = GetFaceIndex(aMesh, aShape, meshFaces,
359 aCube.V000, aCube.V010, aCube.V100, aCube.V110);
360 int _indZ1 = GetFaceIndex(aMesh, aShape, meshFaces,
361 aCube.V001, aCube.V011, aCube.V101, aCube.V111);
362 int _indX0 = GetFaceIndex(aMesh, aShape, meshFaces,
363 aCube.V000, aCube.V001, aCube.V010, aCube.V011);
364 int _indX1 = GetFaceIndex(aMesh, aShape, meshFaces,
365 aCube.V100, aCube.V101, aCube.V110, aCube.V111);
367 // IPAL21120: SIGSEGV on Meshing attached Compound with Automatic Hexadralization
368 if ( _indY1 < 1 || _indZ0 < 1 || _indZ1 < 1 || _indX0 < 1 || _indX1 < 1 )
369 return error(COMPERR_BAD_SHAPE);
371 aCube.quad_Y0 = aQuads[_indY0];
372 aCube.quad_Y1 = aQuads[_indY1];
373 aCube.quad_Z0 = aQuads[_indZ0];
374 aCube.quad_Z1 = aQuads[_indZ1];
375 aCube.quad_X0 = aQuads[_indX0];
376 aCube.quad_X1 = aQuads[_indX1];
378 // 1.7 - get convertion coefs from face 2D normalized to 3D normalized
380 Conv2DStruct cx0; // for face X=0
381 Conv2DStruct cx1; // for face X=1
387 GetConv2DCoefs(*aCube.quad_X0, meshFaces[_indX0]->GetSubShape(),
388 aCube.V000, aCube.V010, aCube.V011, aCube.V001, cx0);
389 GetConv2DCoefs(*aCube.quad_X1, meshFaces[_indX1]->GetSubShape(),
390 aCube.V100, aCube.V110, aCube.V111, aCube.V101, cx1);
391 GetConv2DCoefs(*aCube.quad_Y0, meshFaces[_indY0]->GetSubShape(),
392 aCube.V000, aCube.V100, aCube.V101, aCube.V001, cy0);
393 GetConv2DCoefs(*aCube.quad_Y1, meshFaces[_indY1]->GetSubShape(),
394 aCube.V010, aCube.V110, aCube.V111, aCube.V011, cy1);
395 GetConv2DCoefs(*aCube.quad_Z0, meshFaces[_indZ0]->GetSubShape(),
396 aCube.V000, aCube.V100, aCube.V110, aCube.V010, cz0);
397 GetConv2DCoefs(*aCube.quad_Z1, meshFaces[_indZ1]->GetSubShape(),
398 aCube.V001, aCube.V101, aCube.V111, aCube.V011, cz1);
400 // 1.8 - create a 3D structure for normalized values
402 int nbx = aCube.quad_Z0->side[0]->NbPoints();
403 if (cz0.a1 == 0.) nbx = aCube.quad_Z0->side[1]->NbPoints();
405 int nby = aCube.quad_X0->side[0]->NbPoints();
406 if (cx0.a1 == 0.) nby = aCube.quad_X0->side[1]->NbPoints();
408 int nbz = aCube.quad_Y0->side[0]->NbPoints();
409 if (cy0.a1 != 0.) nbz = aCube.quad_Y0->side[1]->NbPoints();
411 int i1, j1, nbxyz = nbx * nby * nbz;
412 Point3DStruct *np = new Point3DStruct[nbxyz];
414 // 1.9 - store node indexes of faces
417 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX0]->GetSubShape());
419 faceQuadStruct *quad = aCube.quad_X0;
420 int i = 0; // j = x/face , k = y/face
421 int nbdown = quad->side[0]->NbPoints();
422 int nbright = quad->side[1]->NbPoints();
424 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
427 const SMDS_MeshNode * node = itf->next();
428 if(aTool.IsMedium(node))
430 if ( !findIJ( node, quad, i1, j1 ))
431 return ClearAndReturn( aQuads, false );
432 int ij1 = j1 * nbdown + i1;
433 quad->uv_grid[ij1].node = node;
436 for (int i1 = 0; i1 < nbdown; i1++)
437 for (int j1 = 0; j1 < nbright; j1++) {
438 int ij1 = j1 * nbdown + i1;
439 int j = cx0.ia * i1 + cx0.ib * j1 + cx0.ic; // j = x/face
440 int k = cx0.ja * i1 + cx0.jb * j1 + cx0.jc; // k = y/face
441 int ijk = k * nbx * nby + j * nbx + i;
442 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
443 np[ijk].node = quad->uv_grid[ij1].node;
444 //SCRUTE(np[ijk].nodeId);
449 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX1]->GetSubShape());
451 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
453 faceQuadStruct *quad = aCube.quad_X1;
454 int i = nbx - 1; // j = x/face , k = y/face
455 int nbdown = quad->side[0]->NbPoints();
456 int nbright = quad->side[1]->NbPoints();
459 const SMDS_MeshNode * node = itf->next();
460 if(aTool.IsMedium(node))
462 if ( !findIJ( node, quad, i1, j1 ))
463 return ClearAndReturn( aQuads, false );
464 int ij1 = j1 * nbdown + i1;
465 quad->uv_grid[ij1].node = node;
468 for (int i1 = 0; i1 < nbdown; i1++)
469 for (int j1 = 0; j1 < nbright; j1++) {
470 int ij1 = j1 * nbdown + i1;
471 int j = cx1.ia * i1 + cx1.ib * j1 + cx1.ic; // j = x/face
472 int k = cx1.ja * i1 + cx1.jb * j1 + cx1.jc; // k = y/face
473 int ijk = k * nbx * nby + j * nbx + i;
474 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
475 np[ijk].node = quad->uv_grid[ij1].node;
476 //SCRUTE(np[ijk].nodeId);
481 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY0]->GetSubShape());
483 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
485 faceQuadStruct *quad = aCube.quad_Y0;
486 int j = 0; // i = x/face , k = y/face
487 int nbdown = quad->side[0]->NbPoints();
488 int nbright = quad->side[1]->NbPoints();
491 const SMDS_MeshNode * node = itf->next();
492 if(aTool.IsMedium(node))
494 if ( !findIJ( node, quad, i1, j1 ))
495 return ClearAndReturn( aQuads, false );
496 int ij1 = j1 * nbdown + i1;
497 quad->uv_grid[ij1].node = node;
500 for (int i1 = 0; i1 < nbdown; i1++)
501 for (int j1 = 0; j1 < nbright; j1++) {
502 int ij1 = j1 * nbdown + i1;
503 int i = cy0.ia * i1 + cy0.ib * j1 + cy0.ic; // i = x/face
504 int k = cy0.ja * i1 + cy0.jb * j1 + cy0.jc; // k = y/face
505 int ijk = k * nbx * nby + j * nbx + i;
506 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
507 np[ijk].node = quad->uv_grid[ij1].node;
508 //SCRUTE(np[ijk].nodeId);
513 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY1]->GetSubShape());
515 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
517 faceQuadStruct *quad = aCube.quad_Y1;
518 int j = nby - 1; // i = x/face , k = y/face
519 int nbdown = quad->side[0]->NbPoints();
520 int nbright = quad->side[1]->NbPoints();
523 const SMDS_MeshNode * node = itf->next();
524 if(aTool.IsMedium(node))
526 if ( !findIJ( node, quad, i1, j1 ))
527 return ClearAndReturn( aQuads, false );
528 int ij1 = j1 * nbdown + i1;
529 quad->uv_grid[ij1].node = node;
532 for (int i1 = 0; i1 < nbdown; i1++)
533 for (int j1 = 0; j1 < nbright; j1++) {
534 int ij1 = j1 * nbdown + i1;
535 int i = cy1.ia * i1 + cy1.ib * j1 + cy1.ic; // i = x/face
536 int k = cy1.ja * i1 + cy1.jb * j1 + cy1.jc; // k = y/face
537 int ijk = k * nbx * nby + j * nbx + i;
538 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
539 np[ijk].node = quad->uv_grid[ij1].node;
540 //SCRUTE(np[ijk].nodeId);
545 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ0]->GetSubShape());
547 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
549 faceQuadStruct *quad = aCube.quad_Z0;
550 int k = 0; // i = x/face , j = y/face
551 int nbdown = quad->side[0]->NbPoints();
552 int nbright = quad->side[1]->NbPoints();
555 const SMDS_MeshNode * node = itf->next();
556 if(aTool.IsMedium(node))
558 if ( !findIJ( node, quad, i1, j1 ))
559 return ClearAndReturn( aQuads, false );
560 int ij1 = j1 * nbdown + i1;
561 quad->uv_grid[ij1].node = node;
564 for (int i1 = 0; i1 < nbdown; i1++)
565 for (int j1 = 0; j1 < nbright; j1++) {
566 int ij1 = j1 * nbdown + i1;
567 int i = cz0.ia * i1 + cz0.ib * j1 + cz0.ic; // i = x/face
568 int j = cz0.ja * i1 + cz0.jb * j1 + cz0.jc; // j = y/face
569 int ijk = k * nbx * nby + j * nbx + i;
570 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
571 np[ijk].node = quad->uv_grid[ij1].node;
572 //SCRUTE(np[ijk].nodeId);
577 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ1]->GetSubShape());
579 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
581 faceQuadStruct *quad = aCube.quad_Z1;
582 int k = nbz - 1; // i = x/face , j = y/face
583 int nbdown = quad->side[0]->NbPoints();
584 int nbright = quad->side[1]->NbPoints();
587 const SMDS_MeshNode * node = itf->next();
588 if(aTool.IsMedium(node))
590 if ( !findIJ( node, quad, i1, j1 ))
591 return ClearAndReturn( aQuads, false );
592 int ij1 = j1 * nbdown + i1;
593 quad->uv_grid[ij1].node = node;
596 for (int i1 = 0; i1 < nbdown; i1++)
597 for (int j1 = 0; j1 < nbright; j1++) {
598 int ij1 = j1 * nbdown + i1;
599 int i = cz1.ia * i1 + cz1.ib * j1 + cz1.ic; // i = x/face
600 int j = cz1.ja * i1 + cz1.jb * j1 + cz1.jc; // j = y/face
601 int ijk = k * nbx * nby + j * nbx + i;
602 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
603 np[ijk].node = quad->uv_grid[ij1].node;
604 //SCRUTE(np[ijk].nodeId);
608 // 2.0 - for each node of the cube:
609 // - get the 8 points 3D = 8 vertices of the cube
610 // - get the 12 points 3D on the 12 edges of the cube
611 // - get the 6 points 3D on the 6 faces with their ID
612 // - compute the point 3D
613 // - store the point 3D in SMESHDS, store its ID in 3D structure
615 int shapeID = meshDS->ShapeToIndex( aShape );
617 Pt3 p000, p001, p010, p011, p100, p101, p110, p111;
618 Pt3 px00, px01, px10, px11;
619 Pt3 p0y0, p0y1, p1y0, p1y1;
620 Pt3 p00z, p01z, p10z, p11z;
621 Pt3 pxy0, pxy1, px0z, px1z, p0yz, p1yz;
623 GetPoint(p000, 0, 0, 0, nbx, nby, nbz, np, meshDS);
624 GetPoint(p001, 0, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
625 GetPoint(p010, 0, nby - 1, 0, nbx, nby, nbz, np, meshDS);
626 GetPoint(p011, 0, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
627 GetPoint(p100, nbx - 1, 0, 0, nbx, nby, nbz, np, meshDS);
628 GetPoint(p101, nbx - 1, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
629 GetPoint(p110, nbx - 1, nby - 1, 0, nbx, nby, nbz, np, meshDS);
630 GetPoint(p111, nbx - 1, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
632 for (int i = 1; i < nbx - 1; i++) {
633 for (int j = 1; j < nby - 1; j++) {
634 for (int k = 1; k < nbz - 1; k++) {
635 // *** seulement maillage regulier
636 // 12 points on edges
637 GetPoint(px00, i, 0, 0, nbx, nby, nbz, np, meshDS);
638 GetPoint(px01, i, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
639 GetPoint(px10, i, nby - 1, 0, nbx, nby, nbz, np, meshDS);
640 GetPoint(px11, i, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
642 GetPoint(p0y0, 0, j, 0, nbx, nby, nbz, np, meshDS);
643 GetPoint(p0y1, 0, j, nbz - 1, nbx, nby, nbz, np, meshDS);
644 GetPoint(p1y0, nbx - 1, j, 0, nbx, nby, nbz, np, meshDS);
645 GetPoint(p1y1, nbx - 1, j, nbz - 1, nbx, nby, nbz, np, meshDS);
647 GetPoint(p00z, 0, 0, k, nbx, nby, nbz, np, meshDS);
648 GetPoint(p01z, 0, nby - 1, k, nbx, nby, nbz, np, meshDS);
649 GetPoint(p10z, nbx - 1, 0, k, nbx, nby, nbz, np, meshDS);
650 GetPoint(p11z, nbx - 1, nby - 1, k, nbx, nby, nbz, np, meshDS);
652 // 12 points on faces
653 GetPoint(pxy0, i, j, 0, nbx, nby, nbz, np, meshDS);
654 GetPoint(pxy1, i, j, nbz - 1, nbx, nby, nbz, np, meshDS);
655 GetPoint(px0z, i, 0, k, nbx, nby, nbz, np, meshDS);
656 GetPoint(px1z, i, nby - 1, k, nbx, nby, nbz, np, meshDS);
657 GetPoint(p0yz, 0, j, k, nbx, nby, nbz, np, meshDS);
658 GetPoint(p1yz, nbx - 1, j, k, nbx, nby, nbz, np, meshDS);
660 int ijk = k * nbx * nby + j * nbx + i;
661 double x = double (i) / double (nbx - 1); // *** seulement
662 double y = double (j) / double (nby - 1); // *** maillage
663 double z = double (k) / double (nbz - 1); // *** regulier
666 for (int i = 0; i < 3; i++) {
667 X[i] = (1 - x) * p0yz[i] + x * p1yz[i]
668 + (1 - y) * px0z[i] + y * px1z[i]
669 + (1 - z) * pxy0[i] + z * pxy1[i]
670 - (1 - x) * ((1 - y) * p00z[i] + y * p01z[i])
671 - x * ((1 - y) * p10z[i] + y * p11z[i])
672 - (1 - y) * ((1 - z) * px00[i] + z * px01[i])
673 - y * ((1 - z) * px10[i] + z * px11[i])
674 - (1 - z) * ((1 - x) * p0y0[i] + x * p1y0[i])
675 - z * ((1 - x) * p0y1[i] + x * p1y1[i])
676 + (1 - x) * ((1 - y) * ((1 - z) * p000[i] + z * p001[i])
677 + y * ((1 - z) * p010[i] + z * p011[i]))
678 + x * ((1 - y) * ((1 - z) * p100[i] + z * p101[i])
679 + y * ((1 - z) * p110[i] + z * p111[i]));
682 SMDS_MeshNode * node = meshDS->AddNode(X[0], X[1], X[2]);
684 meshDS->SetNodeInVolume(node, shapeID);
689 // find orientation of furute volumes according to MED convention
690 vector< bool > forward( nbx * nby );
691 SMDS_VolumeTool vTool;
692 for (int i = 0; i < nbx - 1; i++) {
693 for (int j = 0; j < nby - 1; j++) {
694 int n1 = j * nbx + i;
695 int n2 = j * nbx + i + 1;
696 int n3 = (j + 1) * nbx + i + 1;
697 int n4 = (j + 1) * nbx + i;
698 int n5 = nbx * nby + j * nbx + i;
699 int n6 = nbx * nby + j * nbx + i + 1;
700 int n7 = nbx * nby + (j + 1) * nbx + i + 1;
701 int n8 = nbx * nby + (j + 1) * nbx + i;
703 SMDS_VolumeOfNodes tmpVol (np[n1].node,np[n2].node,np[n3].node,np[n4].node,
704 np[n5].node,np[n6].node,np[n7].node,np[n8].node);
705 vTool.Set( &tmpVol );
706 forward[ n1 ] = vTool.IsForward();
710 //2.1 - for each node of the cube (less 3 *1 Faces):
711 // - store hexahedron in SMESHDS
712 MESSAGE("Storing hexahedron into the DS");
713 for (int i = 0; i < nbx - 1; i++) {
714 for (int j = 0; j < nby - 1; j++) {
715 bool isForw = forward.at( j * nbx + i );
716 for (int k = 0; k < nbz - 1; k++) {
717 int n1 = k * nbx * nby + j * nbx + i;
718 int n2 = k * nbx * nby + j * nbx + i + 1;
719 int n3 = k * nbx * nby + (j + 1) * nbx + i + 1;
720 int n4 = k * nbx * nby + (j + 1) * nbx + i;
721 int n5 = (k + 1) * nbx * nby + j * nbx + i;
722 int n6 = (k + 1) * nbx * nby + j * nbx + i + 1;
723 int n7 = (k + 1) * nbx * nby + (j + 1) * nbx + i + 1;
724 int n8 = (k + 1) * nbx * nby + (j + 1) * nbx + i;
726 SMDS_MeshVolume * elt;
728 elt = aTool.AddVolume(np[n1].node, np[n2].node,
729 np[n3].node, np[n4].node,
730 np[n5].node, np[n6].node,
731 np[n7].node, np[n8].node);
734 elt = aTool.AddVolume(np[n1].node, np[n4].node,
735 np[n3].node, np[n2].node,
736 np[n5].node, np[n8].node,
737 np[n7].node, np[n6].node);
740 meshDS->SetMeshElementOnShape(elt, shapeID);
744 if ( np ) delete [] np;
745 return ClearAndReturn( aQuads, true );
749 //=============================================================================
753 //=============================================================================
755 bool StdMeshers_Hexa_3D::Evaluate(SMESH_Mesh & aMesh,
756 const TopoDS_Shape & aShape,
757 MapShapeNbElems& aResMap)
759 vector < SMESH_subMesh * >meshFaces;
760 TopTools_SequenceOfShape aFaces;
761 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
762 aFaces.Append(exp.Current());
763 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
765 meshFaces.push_back(aSubMesh);
767 if (meshFaces.size() != 6) {
768 //return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
769 static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
770 return compositeHexa.Evaluate(aMesh, aShape, aResMap);
775 //TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
776 TopoDS_Shape aFace = aFaces.Value(i+1);
777 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
779 std::vector<int> aResVec(SMDSEntity_Last);
780 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
781 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
782 aResMap.insert(std::make_pair(sm,aResVec));
783 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
784 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
787 string algoName = algo->GetName();
788 bool isAllQuad = false;
789 if (algoName == "Quadrangle_2D") {
790 MapShapeNbElemsItr anIt = aResMap.find(meshFaces[i]);
791 if( anIt == aResMap.end() ) continue;
792 std::vector<int> aVec = (*anIt).second;
793 int nbtri = Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
798 return EvaluatePentahedralMesh(aMesh, aShape, aResMap);
802 // find number of 1d elems for 1 face
804 TopTools_MapOfShape Edges1;
805 bool IsQuadratic = false;
807 for (TopExp_Explorer exp(aFaces.Value(1), TopAbs_EDGE); exp.More(); exp.Next()) {
808 Edges1.Add(exp.Current());
809 SMESH_subMesh *sm = aMesh.GetSubMesh(exp.Current());
811 MapShapeNbElemsItr anIt = aResMap.find(sm);
812 if( anIt == aResMap.end() ) continue;
813 std::vector<int> aVec = (*anIt).second;
814 nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
816 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
821 // find face opposite to 1 face
823 for(i=2; i<=6; i++) {
824 bool IsOpposite = true;
825 for(TopExp_Explorer exp(aFaces.Value(i), TopAbs_EDGE); exp.More(); exp.Next()) {
826 if( Edges1.Contains(exp.Current()) ) {
836 // find number of 2d elems on side faces
838 for(i=2; i<=6; i++) {
839 if( i == OppNum ) continue;
840 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[i-1] );
841 if( anIt == aResMap.end() ) continue;
842 std::vector<int> aVec = (*anIt).second;
843 nb2d += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
846 MapShapeNbElemsItr anIt = aResMap.find( meshFaces[0] );
847 std::vector<int> aVec = (*anIt).second;
848 int nb2d_face0 = Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
849 int nb0d_face0 = aVec[SMDSEntity_Node];
851 std::vector<int> aResVec(SMDSEntity_Last);
852 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
854 aResVec[SMDSEntity_Quad_Hexa] = nb2d_face0 * ( nb2d/nb1d );
855 int nb1d_face0_int = ( nb2d_face0*4 - nb1d ) / 2;
856 aResVec[SMDSEntity_Node] = nb0d_face0 * ( 2*nb2d/nb1d - 1 ) - nb1d_face0_int * nb2d/nb1d;
859 aResVec[SMDSEntity_Node] = nb0d_face0 * ( nb2d/nb1d - 1 );
860 aResVec[SMDSEntity_Hexa] = nb2d_face0 * ( nb2d/nb1d );
862 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
863 aResMap.insert(std::make_pair(sm,aResVec));
868 //================================================================================
870 * \brief Computes hexahedral mesh from 2D mesh of block
872 //================================================================================
874 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh, SMESH_MesherHelper* aHelper)
876 static StdMeshers_HexaFromSkin_3D * algo = 0;
878 SMESH_Gen* gen = aMesh.GetGen();
879 algo = new StdMeshers_HexaFromSkin_3D( gen->GetANewId(), 0, gen );
881 algo->InitComputeError();
882 algo->Compute( aMesh, aHelper );
883 return error( algo->GetComputeError());
886 //=============================================================================
890 //=============================================================================
892 void StdMeshers_Hexa_3D::GetPoint(Pt3 p, int i, int j, int k, int nbx, int nby, int nbz,
893 Point3DStruct * np, const SMESHDS_Mesh * meshDS)
895 int ijk = k * nbx * nby + j * nbx + i;
896 const SMDS_MeshNode * node = np[ijk].node;
900 //MESSAGE(" "<<i<<" "<<j<<" "<<k<<" "<<p[0]<<" "<<p[1]<<" "<<p[2]);
903 //=============================================================================
907 //=============================================================================
909 int StdMeshers_Hexa_3D::GetFaceIndex(SMESH_Mesh & aMesh,
910 const TopoDS_Shape & aShape,
911 const vector < SMESH_subMesh * >&meshFaces,
912 const TopoDS_Vertex & V0,
913 const TopoDS_Vertex & V1,
914 const TopoDS_Vertex & V2, const TopoDS_Vertex & V3)
916 //MESSAGE("StdMeshers_Hexa_3D::GetFaceIndex");
918 for (int i = 1; i < 6; i++)
920 const TopoDS_Shape & aFace = meshFaces[i]->GetSubShape();
921 //const TopoDS_Face& F = TopoDS::Face(aFace);
922 TopTools_IndexedMapOfShape M;
923 TopExp::MapShapes(aFace, TopAbs_VERTEX, M);
924 bool verticesInShape = false;
929 verticesInShape = true;
936 //IPAL21120 ASSERT(faceIndex > 0);
941 //=============================================================================
945 //=============================================================================
948 StdMeshers_Hexa_3D::EdgeNotInFace(SMESH_Mesh & aMesh,
949 const TopoDS_Shape & aShape,
950 const TopoDS_Face & aFace,
951 const TopoDS_Vertex & aVertex,
952 const TopTools_IndexedDataMapOfShapeListOfShape & MS)
954 //MESSAGE("StdMeshers_Hexa_3D::EdgeNotInFace");
955 TopTools_IndexedDataMapOfShapeListOfShape MF;
956 TopExp::MapShapesAndAncestors(aFace, TopAbs_VERTEX, TopAbs_EDGE, MF);
957 const TopTools_ListOfShape & ancestorsInSolid = MS.FindFromKey(aVertex);
958 const TopTools_ListOfShape & ancestorsInFace = MF.FindFromKey(aVertex);
959 // SCRUTE(ancestorsInSolid.Extent());
960 // SCRUTE(ancestorsInFace.Extent());
961 ASSERT(ancestorsInSolid.Extent() == 6); // 6 (edges doublees)
962 ASSERT(ancestorsInFace.Extent() == 2);
966 TopTools_ListIteratorOfListOfShape its(ancestorsInSolid);
967 for (; its.More(); its.Next())
969 TopoDS_Shape ancestor = its.Value();
970 TopTools_ListIteratorOfListOfShape itf(ancestorsInFace);
971 bool isInFace = false;
972 for (; itf.More(); itf.Next())
974 TopoDS_Shape ancestorInFace = itf.Value();
975 if (ancestorInFace.IsSame(ancestor))
983 E = TopoDS::Edge(ancestor);
990 //=============================================================================
994 //=============================================================================
996 void StdMeshers_Hexa_3D::GetConv2DCoefs(const faceQuadStruct & quad,
997 const TopoDS_Shape & aShape,
998 const TopoDS_Vertex & V0,
999 const TopoDS_Vertex & V1,
1000 const TopoDS_Vertex & V2, const TopoDS_Vertex & V3, Conv2DStruct & conv)
1002 // MESSAGE("StdMeshers_Hexa_3D::GetConv2DCoefs");
1003 // const TopoDS_Face & F = TopoDS::Face(aShape);
1004 // TopoDS_Edge E = quad.edge[0];
1006 // Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
1007 // TopoDS_Vertex VFirst, VLast;
1008 // TopExp::Vertices(E, VFirst, VLast); // corresponds to f and l
1009 // bool isForward = (((l - f) * (quad.last[0] - quad.first[0])) > 0);
1010 TopoDS_Vertex VA, VB;
1021 VA = quad.side[0]->FirstVertex();
1022 VB = quad.side[0]->LastVertex();
1024 int a1, b1, c1, a2, b2, c2;
1037 ASSERT(VB.IsSame(V3));
1057 ASSERT(VB.IsSame(V0));
1077 ASSERT(VB.IsSame(V1));
1097 ASSERT(VB.IsSame(V2));
1105 // MESSAGE("X = " << c1 << "+ " << a1 << "*x + " << b1 << "*y");
1106 // MESSAGE("Y = " << c2 << "+ " << a2 << "*x + " << b2 << "*y");
1114 int nbdown = quad.side[0]->NbPoints();
1115 int nbright = quad.side[1]->NbPoints();
1119 int (c1 * a1 * a1) * (nbdown - 1) + int (c1 * b1 * b1) * (nbright - 1);
1123 int (c2 * a2 * a2) * (nbdown - 1) + int (c2 * b2 * b2) * (nbright - 1);
1124 // MESSAGE("I " << conv.ia << " " << conv.ib << " " << conv.ic);
1125 // MESSAGE("J " << conv.ja << " " << conv.jb << " " << conv.jc);
1128 //================================================================================
1130 * \brief Find a vertex opposite to the given vertex of aQuads[0]
1131 * \param aVertex - the vertex
1132 * \param aFace - the face aVertex belongs to
1133 * \param aQuads - quads
1134 * \retval TopoDS_Vertex - found vertex
1136 //================================================================================
1138 TopoDS_Vertex StdMeshers_Hexa_3D::OppositeVertex(const TopoDS_Vertex& aVertex,
1139 const TopTools_IndexedMapOfShape& aQuads0Vertices,
1140 FaceQuadStruct* aQuads[6])
1143 for ( i = 1; i < 6; ++i )
1145 TopoDS_Vertex VV[] = { aQuads[i]->side[0]->FirstVertex(),
1146 aQuads[i]->side[0]->LastVertex() ,
1147 aQuads[i]->side[2]->LastVertex() ,
1148 aQuads[i]->side[2]->FirstVertex() };
1149 for ( j = 0; j < 4; ++j )
1150 if ( aVertex.IsSame( VV[ j ]))
1153 int jPrev = j ? j - 1 : 3;
1154 int jNext = (j + 1) % 4;
1155 if ( aQuads0Vertices.Contains( VV[ jPrev ] ))
1161 return TopoDS_Vertex();
1164 //modified by NIZNHY-PKV Wed Nov 17 15:34:13 2004 f
1165 ///////////////////////////////////////////////////////////////////////////////
1167 //#include <stdio.h>
1169 //=======================================================================
1170 //function : ComputePentahedralMesh
1172 //=======================================================================
1174 SMESH_ComputeErrorPtr ComputePentahedralMesh(SMESH_Mesh & aMesh,
1175 const TopoDS_Shape & aShape)
1177 //printf(" ComputePentahedralMesh HERE\n");
1180 SMESH_ComputeErrorPtr err = SMESH_ComputeError::New();
1182 StdMeshers_Penta_3D anAlgo;
1184 bOK=anAlgo.Compute(aMesh, aShape);
1186 err = anAlgo.GetComputeError();
1188 if ( !bOK && anAlgo.ErrorStatus() == 5 )
1190 static StdMeshers_Prism_3D * aPrism3D = 0;
1192 SMESH_Gen* gen = aMesh.GetGen();
1193 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
1195 SMESH_Hypothesis::Hypothesis_Status aStatus;
1196 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
1197 aPrism3D->InitComputeError();
1198 bOK = aPrism3D->Compute( aMesh, aShape );
1199 err = aPrism3D->GetComputeError();
1206 //=======================================================================
1207 //function : EvaluatePentahedralMesh
1209 //=======================================================================
1211 bool EvaluatePentahedralMesh(SMESH_Mesh & aMesh,
1212 const TopoDS_Shape & aShape,
1213 MapShapeNbElems& aResMap)
1215 StdMeshers_Penta_3D anAlgo;
1216 bool bOK = anAlgo.Evaluate(aMesh, aShape, aResMap);
1218 //err = anAlgo.GetComputeError();
1219 //if ( !bOK && anAlgo.ErrorStatus() == 5 )
1221 static StdMeshers_Prism_3D * aPrism3D = 0;
1223 SMESH_Gen* gen = aMesh.GetGen();
1224 aPrism3D = new StdMeshers_Prism_3D( gen->GetANewId(), 0, gen );
1226 SMESH_Hypothesis::Hypothesis_Status aStatus;
1227 if ( aPrism3D->CheckHypothesis( aMesh, aShape, aStatus ) ) {
1228 return aPrism3D->Evaluate(aMesh, aShape, aResMap);