src/StdMeshers/StdMeshers_Hexa_3D.cxx

   1 //  SMESH SMESH : implementaion of SMESH idl descriptions
   2 //
   3 //  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 //  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   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.
  10 //
  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.
  15 //
  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
  19 //
  20 //  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  21 //
  22 //
  23 //
  24 //  File   : StdMeshers_Hexa_3D.cxx
  25 //           Moved here from SMESH_Hexa_3D.cxx
  26 //  Author : Paul RASCLE, EDF
  27 //  Module : SMESH
  28 //  $Header$
  29
  30 using namespace std;
  31 #include "StdMeshers_Hexa_3D.hxx"
  32 #include "StdMeshers_Quadrangle_2D.hxx"
  33 #include "SMESH_Gen.hxx"
  34 #include "SMESH_Mesh.hxx"
  35
  36 #include "SMDS_MeshElement.hxx"
  37 #include "SMDS_MeshNode.hxx"
  38 #include "SMDS_FacePosition.hxx"
  39
  40 #include <TopExp.hxx>
  41 #include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
  42 #include <TopTools_ListOfShape.hxx>
  43 #include <TopTools_ListIteratorOfListOfShape.hxx>
  44 #include <TColStd_ListIteratorOfListOfInteger.hxx>
  45
  46 #include <BRep_Tool.hxx>
  47 #include <Geom_Surface.hxx>
  48 #include <Geom_Curve.hxx>
  49 #include <Geom2d_Curve.hxx>
  50 #include <Handle_Geom2d_Curve.hxx>
  51 #include <Handle_Geom_Curve.hxx>
  52 #include <gp_Pnt2d.hxx>
  53
  54 #include "utilities.h"
  55 #include "Utils_ExceptHandlers.hxx"
  56
  57
  58 //=============================================================================
  59 /*!
  60  *
  61  */
  62 //=============================================================================
  63
  64 StdMeshers_Hexa_3D::StdMeshers_Hexa_3D(int hypId, int studyId,
  65         SMESH_Gen * gen):SMESH_3D_Algo(hypId, studyId, gen)
  66 {
  67         MESSAGE("StdMeshers_Hexa_3D::StdMeshers_Hexa_3D");
  68         _name = "Hexa_3D";
  69 //   _shapeType = TopAbs_SOLID;
  70         _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID); // 1 bit /shape type
  71 //   MESSAGE("_shapeType octal " << oct << _shapeType);
  72         for (int i = 0; i < 6; i++)
  73                 _quads[i] = 0;
  74 }
  75
  76 //=============================================================================
  77 /*!
  78  *
  79  */
  80 //=============================================================================
  81
  82 StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D()
  83 {
  84         MESSAGE("StdMeshers_Hexa_3D::~StdMeshers_Hexa_3D");
  85 }
  86
  87 //=============================================================================
  88 /*!
  89  *
  90  */
  91 //=============================================================================
  92
  93 bool StdMeshers_Hexa_3D::CheckHypothesis
  94                          (SMESH_Mesh& aMesh,
  95                           const TopoDS_Shape& aShape,
  96                           SMESH_Hypothesis::Hypothesis_Status& aStatus)
  97 {
  98         //MESSAGE("StdMeshers_Hexa_3D::CheckHypothesis");
  99
 100         bool isOk = true;
 101         aStatus = SMESH_Hypothesis::HYP_OK;
 102
 103         // nothing to check
 104
 105         return isOk;
 106 }
 107
 108 //=======================================================================
 109 //function : findIJ
 110 //purpose  : return i,j of the node
 111 //=======================================================================
 112
 113 static bool findIJ (const SMDS_MeshNode* node, const FaceQuadStruct * quad, int& I, int& J)
 114 {
 115   I = J = 0;
 116   const SMDS_FacePosition* fpos =
 117     static_cast<const SMDS_FacePosition*>(node->GetPosition().get());
 118   if ( ! fpos ) return false;
 119   gp_Pnt2d uv( fpos->GetUParameter(), fpos->GetVParameter() );
 120
 121   double minDist = DBL_MAX;
 122   int nbhoriz  = Min(quad->nbPts[0], quad->nbPts[2]);
 123   int nbvertic = Min(quad->nbPts[1], quad->nbPts[3]);
 124   for (int i = 1; i < nbhoriz - 1; i++) {
 125     for (int j = 1; j < nbvertic - 1; j++) {
 126       int ij = j * nbhoriz + i;
 127       gp_Pnt2d uv2( quad->uv_grid[ij].u, quad->uv_grid[ij].v );
 128       double dist = uv.SquareDistance( uv2 );
 129       if ( dist < minDist ) {
 130         minDist = dist;
 131         I = i;
 132         J = j;
 133       }
 134     }
 135   }
 136   return true;
 137 }
 138
 139 //=============================================================================
 140 /*!
 141  * Hexahedron mesh on hexaedron like form
 142  * -0.  - shape and face mesh verification
 143  * -1.  - identify faces and vertices of the "cube"
 144  * -2.  - Algorithm from:
 145  * "Application de l'interpolation transfinie à la création de maillages
 146  *  C0 ou G1 continus sur des triangles, quadrangles, tetraedres, pentaedres
 147  *  et hexaedres déformés."
 148  * Alain PERONNET - 8 janvier 1999
 149  */
 150 //=============================================================================
 151
 152 bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh,
 153         const TopoDS_Shape & aShape)throw(SALOME_Exception)
 154 {
 155   Unexpect aCatch(SalomeException);
 156         MESSAGE("StdMeshers_Hexa_3D::Compute");
 157
 158         bool isOk = false;
 159         SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
 160         SMESH_subMesh *theSubMesh = aMesh.GetSubMesh(aShape);
 161         //const SMESHDS_SubMesh *& subMeshDS = theSubMesh->GetSubMeshDS();
 162
 163         // 0.  - shape and face mesh verification
 164         // 0.1 - shape must be a solid (or a shell) with 6 faces
 165         //MESSAGE("---");
 166
 167         vector < SMESH_subMesh * >meshFaces;
 168         for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next())
 169         {
 170                 SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
 171                 ASSERT(aSubMesh);
 172                 meshFaces.push_back(aSubMesh);
 173         }
 174         if (meshFaces.size() != 6)
 175         {
 176                 SCRUTE(meshFaces.size());
 177 //              ASSERT(0);
 178                 return false;
 179         }
 180
 181         // 0.2 - is each face meshed with Quadrangle_2D? (so, with a wire of 4 edges)
 182         //MESSAGE("---");
 183
 184         for (int i = 0; i < 6; i++)
 185         {
 186                 TopoDS_Shape aShape = meshFaces[i]->GetSubShape();
 187                 SMESH_Algo *algo = _gen->GetAlgo(aMesh, aShape);
 188                 string algoName = algo->GetName();
 189                 if (algoName != "Quadrangle_2D")
 190                 {
 191                         // *** delete _quads
 192                         SCRUTE(algoName);
 193 //                      ASSERT(0);
 194                         return false;
 195                 }
 196                 StdMeshers_Quadrangle_2D *quadAlgo =
 197                         dynamic_cast < StdMeshers_Quadrangle_2D * >(algo);
 198                 ASSERT(quadAlgo);
 199                 try
 200                 {
 201                         _quads[i] = quadAlgo->CheckAnd2Dcompute(aMesh, aShape);
 202                         // *** to delete after usage
 203                 }
 204                 catch(SALOME_Exception & S_ex)
 205                 {
 206                         // *** delete _quads
 207                         // *** throw exception
 208 //                      ASSERT(0);
 209                         return false;
 210                 }
 211
 212                 // 0.2.1 - number of points on the opposite edges must be the same
 213                 if (_quads[i]->nbPts[0] != _quads[i]->nbPts[2] ||
 214                     _quads[i]->nbPts[1] != _quads[i]->nbPts[3])
 215                 {
 216                   MESSAGE("different number of points on the opposite edges of face " << i);
 217 //                  ASSERT(0);
 218                   return false;
 219                 }
 220         }
 221
 222         // 1.  - identify faces and vertices of the "cube"
 223         // 1.1 - ancestor maps vertex->edges in the cube
 224         //MESSAGE("---");
 225
 226         TopTools_IndexedDataMapOfShapeListOfShape MS;
 227         TopExp::MapShapesAndAncestors(aShape, TopAbs_VERTEX, TopAbs_EDGE, MS);
 228
 229         // 1.2 - first face is choosen as face Y=0 of the unit cube
 230         //MESSAGE("---");
 231
 232         const TopoDS_Shape & aFace = meshFaces[0]->GetSubShape();
 233         const TopoDS_Face & F = TopoDS::Face(aFace);
 234
 235         // 1.3 - identify the 4 vertices of the face Y=0: V000, V100, V101, V001
 236         //MESSAGE("---");
 237
 238         int i = 0;
 239         TopoDS_Edge E = _quads[0]->edge[i];     //edge will be Y=0,Z=0 on unit cube
 240         double f, l;
 241         Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
 242         TopoDS_Vertex VFirst, VLast;
 243         TopExp::Vertices(E, VFirst, VLast);     // corresponds to f and l
 244         bool isForward =
 245                 (((l - f) * (_quads[0]->last[i] - _quads[0]->first[i])) > 0);
 246
 247         if (isForward)
 248         {
 249                 _cube.V000 = VFirst;    // will be (0,0,0) on the unit cube
 250                 _cube.V100 = VLast;             // will be (1,0,0) on the unit cube
 251         }
 252         else
 253         {
 254                 _cube.V000 = VLast;
 255                 _cube.V100 = VFirst;
 256         }
 257
 258         i = 1;
 259         E = _quads[0]->edge[i];
 260         C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
 261         TopExp::Vertices(E, VFirst, VLast);
 262         isForward = (((l - f) * (_quads[0]->last[i] - _quads[0]->first[i])) > 0);
 263         if (isForward)
 264                 _cube.V101 = VLast;             // will be (1,0,1) on the unit cube
 265         else
 266                 _cube.V101 = VFirst;
 267
 268         i = 2;
 269         E = _quads[0]->edge[i];
 270         C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
 271         TopExp::Vertices(E, VFirst, VLast);
 272         isForward = (((l - f) * (_quads[0]->last[i] - _quads[0]->first[i])) > 0);
 273         if (isForward)
 274                 _cube.V001 = VLast;             // will be (0,0,1) on the unit cube
 275         else
 276                 _cube.V001 = VFirst;
 277
 278         // 1.4 - find edge X=0, Z=0 (ancestor of V000 not in face Y=0)
 279         //     - find edge X=1, Z=0 (ancestor of V100 not in face Y=0)
 280         //     - find edge X=1, Z=1 (ancestor of V101 not in face Y=0)
 281         //     - find edge X=0, Z=1 (ancestor of V001 not in face Y=0)
 282         //MESSAGE("---");
 283
 284         TopoDS_Edge E_0Y0 = EdgeNotInFace(aMesh, aShape, F, _cube.V000, MS);
 285         ASSERT(!E_0Y0.IsNull());
 286
 287         TopoDS_Edge E_1Y0 = EdgeNotInFace(aMesh, aShape, F, _cube.V100, MS);
 288         ASSERT(!E_1Y0.IsNull());
 289
 290         TopoDS_Edge E_1Y1 = EdgeNotInFace(aMesh, aShape, F, _cube.V101, MS);
 291         ASSERT(!E_1Y1.IsNull());
 292
 293         TopoDS_Edge E_0Y1 = EdgeNotInFace(aMesh, aShape, F, _cube.V001, MS);
 294         ASSERT(!E_0Y1.IsNull());
 295
 296         // 1.5 - identify the 4 vertices in face Y=1: V010, V110, V111, V011
 297         //MESSAGE("---");
 298
 299         TopExp::Vertices(E_0Y0, VFirst, VLast);
 300         if (VFirst.IsSame(_cube.V000))
 301                 _cube.V010 = VLast;
 302         else
 303                 _cube.V010 = VFirst;
 304
 305         TopExp::Vertices(E_1Y0, VFirst, VLast);
 306         if (VFirst.IsSame(_cube.V100))
 307                 _cube.V110 = VLast;
 308         else
 309                 _cube.V110 = VFirst;
 310
 311         TopExp::Vertices(E_1Y1, VFirst, VLast);
 312         if (VFirst.IsSame(_cube.V101))
 313                 _cube.V111 = VLast;
 314         else
 315                 _cube.V111 = VFirst;
 316
 317         TopExp::Vertices(E_0Y1, VFirst, VLast);
 318         if (VFirst.IsSame(_cube.V001))
 319                 _cube.V011 = VLast;
 320         else
 321                 _cube.V011 = VFirst;
 322
 323         // 1.6 - find remaining faces given 4 vertices
 324         //MESSAGE("---");
 325
 326         _indY0 = 0;
 327         _cube.quad_Y0 = _quads[_indY0];
 328
 329         _indY1 = GetFaceIndex(aMesh, aShape, meshFaces,
 330                 _cube.V010, _cube.V011, _cube.V110, _cube.V111);
 331         _cube.quad_Y1 = _quads[_indY1];
 332
 333         _indZ0 = GetFaceIndex(aMesh, aShape, meshFaces,
 334                 _cube.V000, _cube.V010, _cube.V100, _cube.V110);
 335         _cube.quad_Z0 = _quads[_indZ0];
 336
 337         _indZ1 = GetFaceIndex(aMesh, aShape, meshFaces,
 338                 _cube.V001, _cube.V011, _cube.V101, _cube.V111);
 339         _cube.quad_Z1 = _quads[_indZ1];
 340
 341         _indX0 = GetFaceIndex(aMesh, aShape, meshFaces,
 342                 _cube.V000, _cube.V001, _cube.V010, _cube.V011);
 343         _cube.quad_X0 = _quads[_indX0];
 344
 345         _indX1 = GetFaceIndex(aMesh, aShape, meshFaces,
 346                 _cube.V100, _cube.V101, _cube.V110, _cube.V111);
 347         _cube.quad_X1 = _quads[_indX1];
 348
 349         //MESSAGE("---");
 350
 351         // 1.7 - get convertion coefs from face 2D normalized to 3D normalized
 352
 353         Conv2DStruct cx0;                       // for face X=0
 354         Conv2DStruct cx1;                       // for face X=1
 355         Conv2DStruct cy0;
 356         Conv2DStruct cy1;
 357         Conv2DStruct cz0;
 358         Conv2DStruct cz1;
 359
 360         GetConv2DCoefs(*_cube.quad_X0, meshFaces[_indX0]->GetSubShape(),
 361                 _cube.V000, _cube.V010, _cube.V011, _cube.V001, cx0);
 362         GetConv2DCoefs(*_cube.quad_X1, meshFaces[_indX1]->GetSubShape(),
 363                 _cube.V100, _cube.V110, _cube.V111, _cube.V101, cx1);
 364         GetConv2DCoefs(*_cube.quad_Y0, meshFaces[_indY0]->GetSubShape(),
 365                 _cube.V000, _cube.V100, _cube.V101, _cube.V001, cy0);
 366         GetConv2DCoefs(*_cube.quad_Y1, meshFaces[_indY1]->GetSubShape(),
 367                 _cube.V010, _cube.V110, _cube.V111, _cube.V011, cy1);
 368         GetConv2DCoefs(*_cube.quad_Z0, meshFaces[_indZ0]->GetSubShape(),
 369                 _cube.V000, _cube.V100, _cube.V110, _cube.V010, cz0);
 370         GetConv2DCoefs(*_cube.quad_Z1, meshFaces[_indZ1]->GetSubShape(),
 371                 _cube.V001, _cube.V101, _cube.V111, _cube.V011, cz1);
 372
 373         // 1.8 - create a 3D structure for normalized values
 374
 375         //MESSAGE("---");
 376         int nbx = _cube.quad_Z0->nbPts[0];
 377         if (cz0.a1 == 0.) nbx = _cube.quad_Z0->nbPts[1];
 378
 379         int nby = _cube.quad_X0->nbPts[0];
 380         if (cx0.a1 == 0.) nby = _cube.quad_X0->nbPts[1];
 381
 382         int nbz = _cube.quad_Y0->nbPts[0];
 383         if (cy0.a1 != 0.) nbz = _cube.quad_Y0->nbPts[1];
 384 //      int nbx = _cube.quad_Y0->nbPts[0];
 385 //      int nby = _cube.quad_Y0->nbPts[1];
 386 //      int nbz;
 387 //      if (cx0.a1 != 0)
 388 //              nbz = _cube.quad_X0->nbPts[1];
 389 //      else
 390 //              nbz = _cube.quad_X0->nbPts[0];
 391         //SCRUTE(nbx);
 392         //SCRUTE(nby);
 393         //SCRUTE(nbz);
 394         int i1, j1, nbxyz = nbx * nby * nbz;
 395         Point3DStruct *np = new Point3DStruct[nbxyz];
 396
 397         // 1.9 - store node indexes of faces
 398
 399         {
 400                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX0]->GetSubShape());
 401
 402                 faceQuadStruct *quad = _cube.quad_X0;
 403                 int i = 0;                              // j = x/face , k = y/face
 404                 int nbdown = quad->nbPts[0];
 405                 int nbright = quad->nbPts[1];
 406
 407
 408                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 409
 410                 while(itf->more())
 411                 {
 412                         const SMDS_MeshNode * node = itf->next();
 413                         findIJ( node, quad, i1, j1 );
 414                         int ij1 = j1 * nbdown + i1;
 415                         quad->uv_grid[ij1].node = node;
 416                 }
 417
 418                 for (int i1 = 0; i1 < nbdown; i1++)
 419                         for (int j1 = 0; j1 < nbright; j1++)
 420                         {
 421                                 int ij1 = j1 * nbdown + i1;
 422                                 int j = cx0.ia * i1 + cx0.ib * j1 + cx0.ic;     // j = x/face
 423                                 int k = cx0.ja * i1 + cx0.jb * j1 + cx0.jc;     // k = y/face
 424                                 int ijk = k * nbx * nby + j * nbx + i;
 425                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 426                                 np[ijk].node = quad->uv_grid[ij1].node;
 427                                 //SCRUTE(np[ijk].nodeId);
 428                         }
 429         }
 430
 431         {
 432                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX1]->GetSubShape());
 433
 434                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 435
 436                 faceQuadStruct *quad = _cube.quad_X1;
 437                 int i = nbx - 1;                // j = x/face , k = y/face
 438                 int nbdown = quad->nbPts[0];
 439                 int nbright = quad->nbPts[1];
 440
 441                 while(itf->more())
 442                 {
 443                         const SMDS_MeshNode * node = itf->next();
 444                         findIJ( node, quad, i1, j1 );
 445                         int ij1 = j1 * nbdown + i1;
 446                         quad->uv_grid[ij1].node = node;
 447                 }
 448
 449                 for (int i1 = 0; i1 < nbdown; i1++)
 450                         for (int j1 = 0; j1 < nbright; j1++)
 451                         {
 452                                 int ij1 = j1 * nbdown + i1;
 453                                 int j = cx1.ia * i1 + cx1.ib * j1 + cx1.ic;     // j = x/face
 454                                 int k = cx1.ja * i1 + cx1.jb * j1 + cx1.jc;     // k = y/face
 455                                 int ijk = k * nbx * nby + j * nbx + i;
 456                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 457                                 np[ijk].node = quad->uv_grid[ij1].node;
 458                                 //SCRUTE(np[ijk].nodeId);
 459                         }
 460         }
 461
 462         {
 463                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY0]->GetSubShape());
 464
 465                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 466
 467                 faceQuadStruct *quad = _cube.quad_Y0;
 468                 int j = 0;                              // i = x/face , k = y/face
 469                 int nbdown = quad->nbPts[0];
 470                 int nbright = quad->nbPts[1];
 471
 472                 while(itf->more())
 473                 {
 474                         const SMDS_MeshNode * node = itf->next();
 475                         findIJ( node, quad, i1, j1 );
 476                         int ij1 = j1 * nbdown + i1;
 477                         quad->uv_grid[ij1].node = node;
 478                 }
 479
 480                 for (int i1 = 0; i1 < nbdown; i1++)
 481                         for (int j1 = 0; j1 < nbright; j1++)
 482                         {
 483                                 int ij1 = j1 * nbdown + i1;
 484                                 int i = cy0.ia * i1 + cy0.ib * j1 + cy0.ic;     // i = x/face
 485                                 int k = cy0.ja * i1 + cy0.jb * j1 + cy0.jc;     // k = y/face
 486                                 int ijk = k * nbx * nby + j * nbx + i;
 487                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 488                                 np[ijk].node = quad->uv_grid[ij1].node;
 489                                 //SCRUTE(np[ijk].nodeId);
 490                         }
 491         }
 492
 493         {
 494                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY1]->GetSubShape());
 495
 496                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 497
 498                 faceQuadStruct *quad = _cube.quad_Y1;
 499                 int j = nby - 1;                // i = x/face , k = y/face
 500                 int nbdown = quad->nbPts[0];
 501                 int nbright = quad->nbPts[1];
 502
 503                 while(itf->more())
 504                 {
 505                         const SMDS_MeshNode * node = itf->next();
 506                         findIJ( node, quad, i1, j1 );
 507                         int ij1 = j1 * nbdown + i1;
 508                         quad->uv_grid[ij1].node = node;
 509                 }
 510
 511                 for (int i1 = 0; i1 < nbdown; i1++)
 512                         for (int j1 = 0; j1 < nbright; j1++)
 513                         {
 514                                 int ij1 = j1 * nbdown + i1;
 515                                 int i = cy1.ia * i1 + cy1.ib * j1 + cy1.ic;     // i = x/face
 516                                 int k = cy1.ja * i1 + cy1.jb * j1 + cy1.jc;     // k = y/face
 517                                 int ijk = k * nbx * nby + j * nbx + i;
 518                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 519                                 np[ijk].node = quad->uv_grid[ij1].node;
 520                                 //SCRUTE(np[ijk].nodeId);
 521                         }
 522         }
 523
 524         {
 525                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ0]->GetSubShape());
 526
 527                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 528
 529                 faceQuadStruct *quad = _cube.quad_Z0;
 530                 int k = 0;                              // i = x/face , j = y/face
 531                 int nbdown = quad->nbPts[0];
 532                 int nbright = quad->nbPts[1];
 533
 534                 while(itf->more())
 535                 {
 536                         const SMDS_MeshNode * node = itf->next();
 537                         findIJ( node, quad, i1, j1 );
 538                         int ij1 = j1 * nbdown + i1;
 539                         quad->uv_grid[ij1].node = node;
 540                 }
 541
 542                 for (int i1 = 0; i1 < nbdown; i1++)
 543                         for (int j1 = 0; j1 < nbright; j1++)
 544                         {
 545                                 int ij1 = j1 * nbdown + i1;
 546                                 int i = cz0.ia * i1 + cz0.ib * j1 + cz0.ic;     // i = x/face
 547                                 int j = cz0.ja * i1 + cz0.jb * j1 + cz0.jc;     // j = y/face
 548                                 int ijk = k * nbx * nby + j * nbx + i;
 549                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 550                                 np[ijk].node = quad->uv_grid[ij1].node;
 551                                 //SCRUTE(np[ijk].nodeId);
 552                         }
 553         }
 554
 555         {
 556                 const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ1]->GetSubShape());
 557
 558                 SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
 559
 560                 faceQuadStruct *quad = _cube.quad_Z1;
 561                 int k = nbz - 1;                // i = x/face , j = y/face
 562                 int nbdown = quad->nbPts[0];
 563                 int nbright = quad->nbPts[1];
 564
 565                 while(itf->more())
 566                 {
 567                         const SMDS_MeshNode * node = itf->next();
 568                         findIJ( node, quad, i1, j1 );
 569                         int ij1 = j1 * nbdown + i1;
 570                         quad->uv_grid[ij1].node = node;
 571                 }
 572
 573                 for (int i1 = 0; i1 < nbdown; i1++)
 574                         for (int j1 = 0; j1 < nbright; j1++)
 575                         {
 576                                 int ij1 = j1 * nbdown + i1;
 577                                 int i = cz1.ia * i1 + cz1.ib * j1 + cz1.ic;     // i = x/face
 578                                 int j = cz1.ja * i1 + cz1.jb * j1 + cz1.jc;     // j = y/face
 579                                 int ijk = k * nbx * nby + j * nbx + i;
 580                                 //MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
 581                                 np[ijk].node = quad->uv_grid[ij1].node;
 582                                 //SCRUTE(np[ijk].nodeId);
 583                         }
 584         }
 585
 586         // 2.0 - for each node of the cube:
 587         //       - get the 8 points 3D = 8 vertices of the cube
 588         //       - get the 12 points 3D on the 12 edges of the cube
 589         //       - get the 6 points 3D on the 6 faces with their ID
 590         //       - compute the point 3D
 591         //       - store the point 3D in SMESHDS, store its ID in 3D structure
 592
 593         TopoDS_Shell aShell;
 594         TopExp_Explorer exp(aShape, TopAbs_SHELL);
 595         if (exp.More())
 596         {
 597                 aShell = TopoDS::Shell(exp.Current());
 598         }
 599         else
 600         {
 601                 MESSAGE("no shell...");
 602                 ASSERT(0);
 603         }
 604
 605         Pt3 p000, p001, p010, p011, p100, p101, p110, p111;
 606         Pt3 px00, px01, px10, px11;
 607         Pt3 p0y0, p0y1, p1y0, p1y1;
 608         Pt3 p00z, p01z, p10z, p11z;
 609         Pt3 pxy0, pxy1, px0z, px1z, p0yz, p1yz;
 610
 611         GetPoint(p000, 0, 0, 0, nbx, nby, nbz, np, meshDS);
 612         GetPoint(p001, 0, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
 613         GetPoint(p010, 0, nby - 1, 0, nbx, nby, nbz, np, meshDS);
 614         GetPoint(p011, 0, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
 615         GetPoint(p100, nbx - 1, 0, 0, nbx, nby, nbz, np, meshDS);
 616         GetPoint(p101, nbx - 1, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
 617         GetPoint(p110, nbx - 1, nby - 1, 0, nbx, nby, nbz, np, meshDS);
 618         GetPoint(p111, nbx - 1, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
 619
 620         for (int i = 1; i < nbx - 1; i++)
 621         {
 622                 for (int j = 1; j < nby - 1; j++)
 623                 {
 624                         for (int k = 1; k < nbz - 1; k++)
 625                         {
 626                                 // *** seulement maillage regulier
 627                                 // 12 points on edges
 628                                 GetPoint(px00, i, 0, 0, nbx, nby, nbz, np, meshDS);
 629                                 GetPoint(px01, i, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
 630                                 GetPoint(px10, i, nby - 1, 0, nbx, nby, nbz, np, meshDS);
 631                                 GetPoint(px11, i, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
 632
 633                                 GetPoint(p0y0, 0, j, 0, nbx, nby, nbz, np, meshDS);
 634                                 GetPoint(p0y1, 0, j, nbz - 1, nbx, nby, nbz, np, meshDS);
 635                                 GetPoint(p1y0, nbx - 1, j, 0, nbx, nby, nbz, np, meshDS);
 636                                 GetPoint(p1y1, nbx - 1, j, nbz - 1, nbx, nby, nbz, np, meshDS);
 637
 638                                 GetPoint(p00z, 0, 0, k, nbx, nby, nbz, np, meshDS);
 639                                 GetPoint(p01z, 0, nby - 1, k, nbx, nby, nbz, np, meshDS);
 640                                 GetPoint(p10z, nbx - 1, 0, k, nbx, nby, nbz, np, meshDS);
 641                                 GetPoint(p11z, nbx - 1, nby - 1, k, nbx, nby, nbz, np, meshDS);
 642
 643                                 // 12 points on faces
 644                                 GetPoint(pxy0, i, j, 0, nbx, nby, nbz, np, meshDS);
 645                                 GetPoint(pxy1, i, j, nbz - 1, nbx, nby, nbz, np, meshDS);
 646                                 GetPoint(px0z, i, 0, k, nbx, nby, nbz, np, meshDS);
 647                                 GetPoint(px1z, i, nby - 1, k, nbx, nby, nbz, np, meshDS);
 648                                 GetPoint(p0yz, 0, j, k, nbx, nby, nbz, np, meshDS);
 649                                 GetPoint(p1yz, nbx - 1, j, k, nbx, nby, nbz, np, meshDS);
 650
 651                                 int ijk = k * nbx * nby + j * nbx + i;
 652                                 double x = double (i) / double (nbx - 1);       // *** seulement
 653                                 double y = double (j) / double (nby - 1);       // *** maillage
 654                                 double z = double (k) / double (nbz - 1);       // *** regulier
 655
 656                                 Pt3 X;
 657                                 for (int i = 0; i < 3; i++)
 658                                 {
 659                                         X[i] =
 660                                                 (1 - x) * p0yz[i] + x * p1yz[i]
 661                                                 + (1 - y) * px0z[i] + y * px1z[i]
 662                                                 + (1 - z) * pxy0[i] + z * pxy1[i]
 663                                                 - (1 - x) * ((1 - y) * p00z[i] + y * p01z[i])
 664                                                 - x * ((1 - y) * p10z[i] + y * p11z[i])
 665                                                 - (1 - y) * ((1 - z) * px00[i] + z * px01[i])
 666                                                 - y * ((1 - z) * px10[i] + z * px11[i])
 667                                                 - (1 - z) * ((1 - x) * p0y0[i] + x * p1y0[i])
 668                                                 - z * ((1 - x) * p0y1[i] + x * p1y1[i])
 669                                                 + (1 - x) * ((1 - y) * ((1 - z) * p000[i] + z * p001[i])
 670                                                 + y * ((1 - z) * p010[i] + z * p011[i]))
 671                                                 + x * ((1 - y) * ((1 - z) * p100[i] + z * p101[i])
 672                                                 + y * ((1 - z) * p110[i] + z * p111[i]));
 673                                 }
 674
 675                                 SMDS_MeshNode * node = meshDS->AddNode(X[0], X[1], X[2]);
 676                                 np[ijk].node = node;
 677                                 //meshDS->SetNodeInVolume(node, TopoDS::Solid(aShape));
 678                                 meshDS->SetNodeInVolume(node, aShell);
 679                         }
 680                 }
 681         }
 682
 683         //2.1 - for each node of the cube (less 3 *1 Faces):
 684         //      - store hexahedron in SMESHDS
 685         MESSAGE("Storing hexahedron into the DS");
 686         for (int i = 0; i < nbx - 1; i++)
 687                 for (int j = 0; j < nby - 1; j++)
 688                         for (int k = 0; k < nbz - 1; k++)
 689                         {
 690                                 int n1 = k * nbx * nby + j * nbx + i;
 691                                 int n2 = k * nbx * nby + j * nbx + i + 1;
 692                                 int n3 = k * nbx * nby + (j + 1) * nbx + i + 1;
 693                                 int n4 = k * nbx * nby + (j + 1) * nbx + i;
 694                                 int n5 = (k + 1) * nbx * nby + j * nbx + i;
 695                                 int n6 = (k + 1) * nbx * nby + j * nbx + i + 1;
 696                                 int n7 = (k + 1) * nbx * nby + (j + 1) * nbx + i + 1;
 697                                 int n8 = (k + 1) * nbx * nby + (j + 1) * nbx + i;
 698
 699 //    MESSAGE(" "<<n1<<" "<<n2<<" "<<n3<<" "<<n4<<" "<<n5<<" "<<n6<<" "<<n7<<" "<<n8);
 700                                 //MESSAGE(" "<<np[n1].nodeId<<" "<<np[n2].nodeId<<" "<<np[n3].nodeId<<" "<<np[n4].nodeId<<" "<<np[n5].nodeId<<" "<<np[n6].nodeId<<" "<<np[n7].nodeId<<" "<<np[n8].nodeId);
 701
 702                                 SMDS_MeshVolume * elt = meshDS->AddVolume(np[n1].node,
 703                                         np[n2].node,
 704                                         np[n3].node,
 705                                         np[n4].node,
 706                                         np[n5].node,
 707                                         np[n6].node,
 708                                         np[n7].node,
 709                                         np[n8].node);
 710                                  ;
 711                                 meshDS->SetMeshElementOnShape(elt, aShell);
 712
 713                                 // *** 5 tetrahedres ... verifier orientations,
 714                                 //     mettre en coherence &vec quadrangles-> triangles
 715                                 //     choisir afficher 1 parmi edges, face et volumes
 716 //    int tetra1 = meshDS->AddVolume(np[n1].nodeId,
 717 //                   np[n2].nodeId,
 718 //                   np[n4].nodeId,
 719 //                   np[n5].nodeId);
 720 //    int tetra2 = meshDS->AddVolume(np[n2].nodeId,
 721 //                   np[n3].nodeId,
 722 //                   np[n4].nodeId,
 723 //                   np[n7].nodeId);
 724 //    int tetra3 = meshDS->AddVolume(np[n5].nodeId,
 725 //                   np[n6].nodeId,
 726 //                   np[n7].nodeId,
 727 //                   np[n2].nodeId);
 728 //    int tetra4 = meshDS->AddVolume(np[n5].nodeId,
 729 //                   np[n7].nodeId,
 730 //                   np[n8].nodeId,
 731 //                   np[n4].nodeId);
 732 //    int tetra5 = meshDS->AddVolume(np[n5].nodeId,
 733 //                   np[n7].nodeId,
 734 //                   np[n2].nodeId,
 735 //                   np[n4].nodeId);
 736
 737                         }
 738
 739         //MESSAGE("End of StdMeshers_Hexa_3D::Compute()");
 740         return true;
 741 }
 742
 743 //=============================================================================
 744 /*!
 745  *
 746  */
 747 //=============================================================================
 748
 749 void StdMeshers_Hexa_3D::GetPoint(Pt3 p, int i, int j, int k, int nbx, int nby,
 750         int nbz, Point3DStruct * np, const SMESHDS_Mesh * meshDS)
 751 {
 752         int ijk = k * nbx * nby + j * nbx + i;
 753         const SMDS_MeshNode * node = np[ijk].node;
 754         p[0] = node->X();
 755         p[1] = node->Y();
 756         p[2] = node->Z();
 757         //MESSAGE(" "<<i<<" "<<j<<" "<<k<<" "<<p[0]<<" "<<p[1]<<" "<<p[2]);
 758 }
 759
 760 //=============================================================================
 761 /*!
 762  *
 763  */
 764 //=============================================================================
 765
 766 int StdMeshers_Hexa_3D::GetFaceIndex(SMESH_Mesh & aMesh,
 767         const TopoDS_Shape & aShape,
 768         const vector < SMESH_subMesh * >&meshFaces,
 769         const TopoDS_Vertex & V0,
 770         const TopoDS_Vertex & V1,
 771         const TopoDS_Vertex & V2, const TopoDS_Vertex & V3)
 772 {
 773         //MESSAGE("StdMeshers_Hexa_3D::GetFaceIndex");
 774         int faceIndex = -1;
 775         for (int i = 1; i < 6; i++)
 776         {
 777                 const TopoDS_Shape & aFace = meshFaces[i]->GetSubShape();
 778                 //const TopoDS_Face& F = TopoDS::Face(aFace);
 779                 TopTools_IndexedMapOfShape M;
 780                 TopExp::MapShapes(aFace, TopAbs_VERTEX, M);
 781                 bool verticesInShape = false;
 782                 if (M.Contains(V0))
 783                         if (M.Contains(V1))
 784                                 if (M.Contains(V2))
 785                                         if (M.Contains(V3))
 786                                                 verticesInShape = true;
 787                 if (verticesInShape)
 788                 {
 789                         faceIndex = i;
 790                         break;
 791                 }
 792         }
 793         ASSERT(faceIndex > 0);
 794         //SCRUTE(faceIndex);
 795         return faceIndex;
 796 }
 797
 798 //=============================================================================
 799 /*!
 800  *
 801  */
 802 //=============================================================================
 803
 804 TopoDS_Edge
 805         StdMeshers_Hexa_3D::EdgeNotInFace(SMESH_Mesh & aMesh,
 806         const TopoDS_Shape & aShape,
 807         const TopoDS_Face & aFace,
 808         const TopoDS_Vertex & aVertex,
 809         const TopTools_IndexedDataMapOfShapeListOfShape & MS)
 810 {
 811         //MESSAGE("StdMeshers_Hexa_3D::EdgeNotInFace");
 812         TopTools_IndexedDataMapOfShapeListOfShape MF;
 813         TopExp::MapShapesAndAncestors(aFace, TopAbs_VERTEX, TopAbs_EDGE, MF);
 814         const TopTools_ListOfShape & ancestorsInSolid = MS.FindFromKey(aVertex);
 815         const TopTools_ListOfShape & ancestorsInFace = MF.FindFromKey(aVertex);
 816 //      SCRUTE(ancestorsInSolid.Extent());
 817 //      SCRUTE(ancestorsInFace.Extent());
 818         ASSERT(ancestorsInSolid.Extent() == 6); // 6 (edges doublees)
 819         ASSERT(ancestorsInFace.Extent() == 2);
 820
 821         TopoDS_Edge E;
 822         E.Nullify();
 823         TopTools_ListIteratorOfListOfShape its(ancestorsInSolid);
 824         for (; its.More(); its.Next())
 825         {
 826                 TopoDS_Shape ancestor = its.Value();
 827                 TopTools_ListIteratorOfListOfShape itf(ancestorsInFace);
 828                 bool isInFace = false;
 829                 for (; itf.More(); itf.Next())
 830                 {
 831                         TopoDS_Shape ancestorInFace = itf.Value();
 832                         if (ancestorInFace.IsSame(ancestor))
 833                         {
 834                                 isInFace = true;
 835                                 break;
 836                         }
 837                 }
 838                 if (!isInFace)
 839                 {
 840                         E = TopoDS::Edge(ancestor);
 841                         break;
 842                 }
 843         }
 844         return E;
 845 }
 846
 847 //=============================================================================
 848 /*!
 849  *
 850  */
 851 //=============================================================================
 852
 853 void StdMeshers_Hexa_3D::GetConv2DCoefs(const faceQuadStruct & quad,
 854         const TopoDS_Shape & aShape,
 855         const TopoDS_Vertex & V0,
 856         const TopoDS_Vertex & V1,
 857         const TopoDS_Vertex & V2, const TopoDS_Vertex & V3, Conv2DStruct & conv)
 858 {
 859 //      MESSAGE("StdMeshers_Hexa_3D::GetConv2DCoefs");
 860         const TopoDS_Face & F = TopoDS::Face(aShape);
 861         TopoDS_Edge E = quad.edge[0];
 862         double f, l;
 863         Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E, F, f, l);
 864         TopoDS_Vertex VFirst, VLast;
 865         TopExp::Vertices(E, VFirst, VLast);     // corresponds to f and l
 866         bool isForward = (((l - f) * (quad.last[0] - quad.first[0])) > 0);
 867         TopoDS_Vertex VA, VB;
 868         if (isForward)
 869         {
 870                 VA = VFirst;
 871                 VB = VLast;
 872         }
 873         else
 874         {
 875                 VA = VLast;
 876                 VB = VFirst;
 877         }
 878         int a1, b1, c1, a2, b2, c2;
 879         if (VA.IsSame(V0))
 880                 if (VB.IsSame(V1))
 881                 {
 882                         a1 = 1;
 883                         b1 = 0;
 884                         c1 = 0;                         // x
 885                         a2 = 0;
 886                         b2 = 1;
 887                         c2 = 0;                         // y
 888                 }
 889                 else
 890                 {
 891                         ASSERT(VB.IsSame(V3));
 892                         a1 = 0;
 893                         b1 = 1;
 894                         c1 = 0;                         // y
 895                         a2 = 1;
 896                         b2 = 0;
 897                         c2 = 0;                         // x
 898                 }
 899         if (VA.IsSame(V1))
 900                 if (VB.IsSame(V2))
 901                 {
 902                         a1 = 0;
 903                         b1 = -1;
 904                         c1 = 1;                         // 1-y
 905                         a2 = 1;
 906                         b2 = 0;
 907                         c2 = 0;                         // x
 908                 }
 909                 else
 910                 {
 911                         ASSERT(VB.IsSame(V0));
 912                         a1 = -1;
 913                         b1 = 0;
 914                         c1 = 1;                         // 1-x
 915                         a2 = 0;
 916                         b2 = 1;
 917                         c2 = 0;                         // y
 918                 }
 919         if (VA.IsSame(V2))
 920                 if (VB.IsSame(V3))
 921                 {
 922                         a1 = -1;
 923                         b1 = 0;
 924                         c1 = 1;                         // 1-x
 925                         a2 = 0;
 926                         b2 = -1;
 927                         c2 = 1;                         // 1-y
 928                 }
 929                 else
 930                 {
 931                         ASSERT(VB.IsSame(V1));
 932                         a1 = 0;
 933                         b1 = -1;
 934                         c1 = 1;                         // 1-y
 935                         a2 = -1;
 936                         b2 = 0;
 937                         c2 = 1;                         // 1-x
 938                 }
 939         if (VA.IsSame(V3))
 940                 if (VB.IsSame(V0))
 941                 {
 942                         a1 = 0;
 943                         b1 = 1;
 944                         c1 = 0;                         // y
 945                         a2 = -1;
 946                         b2 = 0;
 947                         c2 = 1;                         // 1-x
 948                 }
 949                 else
 950                 {
 951                         ASSERT(VB.IsSame(V2));
 952                         a1 = 1;
 953                         b1 = 0;
 954                         c1 = 0;                         // x
 955                         a2 = 0;
 956                         b2 = -1;
 957                         c2 = 1;                         // 1-y
 958                 }
 959 //      MESSAGE("X = " << c1 << "+ " << a1 << "*x + " << b1 << "*y");
 960 //      MESSAGE("Y = " << c2 << "+ " << a2 << "*x + " << b2 << "*y");
 961         conv.a1 = a1;
 962         conv.b1 = b1;
 963         conv.c1 = c1;
 964         conv.a2 = a2;
 965         conv.b2 = b2;
 966         conv.c2 = c2;
 967
 968         int nbdown = quad.nbPts[0];
 969         int nbright = quad.nbPts[1];
 970         conv.ia = int (a1);
 971         conv.ib = int (b1);
 972         conv.ic =
 973                 int (c1 * a1 * a1) * (nbdown - 1) + int (c1 * b1 * b1) * (nbright - 1);
 974         conv.ja = int (a2);
 975         conv.jb = int (b2);
 976         conv.jc =
 977                 int (c2 * a2 * a2) * (nbdown - 1) + int (c2 * b2 * b2) * (nbright - 1);
 978 //      MESSAGE("I " << conv.ia << " " << conv.ib << " " << conv.ic);
 979 //      MESSAGE("J " << conv.ja << " " << conv.jb << " " << conv.jc);
 980 }
 981
 982 //=============================================================================
 983 /*!
 984  *
 985  */
 986 //=============================================================================
 987
 988 ostream & StdMeshers_Hexa_3D::SaveTo(ostream & save)
 989 {
 990   return save;
 991 }
 992
 993 //=============================================================================
 994 /*!
 995  *
 996  */
 997 //=============================================================================
 998
 999 istream & StdMeshers_Hexa_3D::LoadFrom(istream & load)
1000 {
1001   return load;
1002 }
1003
1004 //=============================================================================
1005 /*!
1006  *
1007  */
1008 //=============================================================================
1009
1010 ostream & operator <<(ostream & save, StdMeshers_Hexa_3D & hyp)
1011 {
1012   return hyp.SaveTo( save );
1013 }
1014
1015 //=============================================================================
1016 /*!
1017  *
1018  */
1019 //=============================================================================
1020
1021 istream & operator >>(istream & load, StdMeshers_Hexa_3D & hyp)
1022 {
1023   return hyp.LoadFrom( load );
1024 }