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_Quadrangle_2D.cxx
24 // Moved here from SMESH_Quadrangle_2D.cxx
25 // Author : Paul RASCLE, EDF
28 #include "StdMeshers_Quadrangle_2D.hxx"
30 #include "StdMeshers_FaceSide.hxx"
32 #include "StdMeshers_QuadrangleParams.hxx"
34 #include "SMESH_Gen.hxx"
35 #include "SMESH_Mesh.hxx"
36 #include "SMESH_subMesh.hxx"
37 #include "SMESH_MesherHelper.hxx"
38 #include "SMESH_Block.hxx"
39 #include "SMESH_Comment.hxx"
41 #include "SMDS_MeshElement.hxx"
42 #include "SMDS_MeshNode.hxx"
43 #include "SMDS_EdgePosition.hxx"
44 #include "SMDS_FacePosition.hxx"
46 #include <BRep_Tool.hxx>
47 #include <Geom_Surface.hxx>
48 #include <NCollection_DefineArray2.hxx>
49 #include <Precision.hxx>
50 #include <TColStd_SequenceOfReal.hxx>
51 #include <TColgp_SequenceOfXY.hxx>
53 #include <TopExp_Explorer.hxx>
54 #include <TopTools_ListIteratorOfListOfShape.hxx>
55 #include <TopTools_MapOfShape.hxx>
58 #include "utilities.h"
59 #include "Utils_ExceptHandlers.hxx"
61 #ifndef StdMeshers_Array2OfNode_HeaderFile
62 #define StdMeshers_Array2OfNode_HeaderFile
63 typedef const SMDS_MeshNode* SMDS_MeshNodePtr;
64 DEFINE_BASECOLLECTION (StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
65 DEFINE_ARRAY2(StdMeshers_Array2OfNode,
66 StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
72 typedef SMESH_Comment TComm;
74 //=============================================================================
78 //=============================================================================
80 StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D (int hypId, int studyId,
82 : SMESH_2D_Algo(hypId, studyId, gen)
84 MESSAGE("StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D");
85 _name = "Quadrangle_2D";
86 _shapeType = (1 << TopAbs_FACE);
87 _compatibleHypothesis.push_back("QuadrangleParams");
88 _compatibleHypothesis.push_back("QuadranglePreference");
89 _compatibleHypothesis.push_back("TrianglePreference");
93 //=============================================================================
97 //=============================================================================
99 StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D()
101 MESSAGE("StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D");
104 //=============================================================================
108 //=============================================================================
110 bool StdMeshers_Quadrangle_2D::CheckHypothesis
112 const TopoDS_Shape& aShape,
113 SMESH_Hypothesis::Hypothesis_Status& aStatus)
116 aStatus = SMESH_Hypothesis::HYP_OK;
118 const list <const SMESHDS_Hypothesis * >&hyps =
119 GetUsedHypothesis(aMesh, aShape, false);
120 const SMESHDS_Hypothesis *theHyp = 0;
122 if( hyps.size() == 1 ) {
124 theHyp = hyps.front();
125 if(strcmp("QuadrangleParams", theHyp->GetName()) == 0) {
126 const StdMeshers_QuadrangleParams* theHyp1 =
127 (const StdMeshers_QuadrangleParams*)theHyp;
128 myTriaVertexID = theHyp1->GetTriaVertex();
129 myQuadranglePreference= false;
130 myTrianglePreference= false;
132 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
133 myQuadranglePreference= true;
134 myTrianglePreference= false;
137 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
138 myQuadranglePreference= false;
139 myTrianglePreference= true;
144 else if( hyps.size() > 1 ) {
145 theHyp = hyps.front();
146 if(strcmp("QuadrangleParams", theHyp->GetName()) == 0) {
147 const StdMeshers_QuadrangleParams* theHyp1 =
148 (const StdMeshers_QuadrangleParams*)theHyp;
149 myTriaVertexID = theHyp1->GetTriaVertex();
150 theHyp = hyps.back();
151 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
152 myQuadranglePreference= true;
153 myTrianglePreference= false;
155 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
156 myQuadranglePreference= false;
157 myTrianglePreference= true;
161 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
162 myQuadranglePreference= true;
163 myTrianglePreference= false;
165 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
166 myQuadranglePreference= false;
167 myTrianglePreference= true;
169 const StdMeshers_QuadrangleParams* theHyp2 =
170 (const StdMeshers_QuadrangleParams*)hyps.back();
171 myTriaVertexID = theHyp2->GetTriaVertex();
176 myQuadranglePreference = false;
177 myTrianglePreference = false;
184 //=============================================================================
188 //=============================================================================
190 bool StdMeshers_Quadrangle_2D::Compute (SMESH_Mesh& aMesh,
191 const TopoDS_Shape& aShape)// throw (SALOME_Exception)
193 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
194 //Unexpect aCatchSalomeException);
196 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
197 aMesh.GetSubMesh(aShape);
199 SMESH_MesherHelper helper(aMesh);
202 _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
204 FaceQuadStruct *quad = CheckNbEdges( aMesh, aShape );
205 std::auto_ptr<FaceQuadStruct> quadDeleter( quad ); // to delete quad at exit from Compute()
209 if(myQuadranglePreference) {
210 int n1 = quad->side[0]->NbPoints();
211 int n2 = quad->side[1]->NbPoints();
212 int n3 = quad->side[2]->NbPoints();
213 int n4 = quad->side[3]->NbPoints();
214 int nfull = n1+n2+n3+n4;
217 if( nfull==ntmp && ( (n1!=n3) || (n2!=n4) ) ) {
218 // special path for using only quandrangle faces
219 bool ok = ComputeQuadPref(aMesh, aShape, quad);
224 // set normalized grid on unit square in parametric domain
226 if (!SetNormalizedGrid(aMesh, aShape, quad))
229 // --- compute 3D values on points, store points & quadrangles
231 int nbdown = quad->side[0]->NbPoints();
232 int nbup = quad->side[2]->NbPoints();
234 int nbright = quad->side[1]->NbPoints();
235 int nbleft = quad->side[3]->NbPoints();
237 int nbhoriz = Min(nbdown, nbup);
238 int nbvertic = Min(nbright, nbleft);
240 const TopoDS_Face& F = TopoDS::Face(aShape);
241 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
243 // internal mesh nodes
244 int i, j, geomFaceID = meshDS->ShapeToIndex( F );
245 for (i = 1; i < nbhoriz - 1; i++) {
246 for (j = 1; j < nbvertic - 1; j++) {
247 int ij = j * nbhoriz + i;
248 double u = quad->uv_grid[ij].u;
249 double v = quad->uv_grid[ij].v;
250 gp_Pnt P = S->Value(u, v);
251 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
252 meshDS->SetNodeOnFace(node, geomFaceID, u, v);
253 quad->uv_grid[ij].node = node;
260 // --.--.--.--.--.-- nbvertic
266 // ---.----.----.--- 0
267 // 0 > > > > > > > > nbhoriz
273 int iup = nbhoriz - 1;
274 if (quad->isEdgeOut[3]) { ilow++; } else { if (quad->isEdgeOut[1]) iup--; }
277 int jup = nbvertic - 1;
278 if (quad->isEdgeOut[0]) { jlow++; } else { if (quad->isEdgeOut[2]) jup--; }
280 // regular quadrangles
281 for (i = ilow; i < iup; i++) {
282 for (j = jlow; j < jup; j++) {
283 const SMDS_MeshNode *a, *b, *c, *d;
284 a = quad->uv_grid[j * nbhoriz + i].node;
285 b = quad->uv_grid[j * nbhoriz + i + 1].node;
286 c = quad->uv_grid[(j + 1) * nbhoriz + i + 1].node;
287 d = quad->uv_grid[(j + 1) * nbhoriz + i].node;
288 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
290 meshDS->SetMeshElementOnShape(face, geomFaceID);
295 const vector<UVPtStruct>& uv_e0 = quad->side[0]->GetUVPtStruct(true,0 );
296 const vector<UVPtStruct>& uv_e1 = quad->side[1]->GetUVPtStruct(false,1);
297 const vector<UVPtStruct>& uv_e2 = quad->side[2]->GetUVPtStruct(true,1 );
298 const vector<UVPtStruct>& uv_e3 = quad->side[3]->GetUVPtStruct(false,0);
300 if ( uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty() )
301 return error( COMPERR_BAD_INPUT_MESH );
303 double eps = Precision::Confusion();
305 // Boundary quadrangles
307 if (quad->isEdgeOut[0]) {
310 // |___|___|___|___|___|___|
312 // |___|___|___|___|___|___|
314 // |___|___|___|___|___|___| __ first row of the regular grid
315 // . . . . . . . . . __ down edge nodes
317 // >->->->->->->->->->->->-> -- direction of processing
319 int g = 0; // number of last processed node in the regular grid
321 // number of last node of the down edge to be processed
322 int stop = nbdown - 1;
323 // if right edge is out, we will stop at a node, previous to the last one
324 if (quad->isEdgeOut[1]) stop--;
326 // for each node of the down edge find nearest node
327 // in the first row of the regular grid and link them
328 for (i = 0; i < stop; i++) {
329 const SMDS_MeshNode *a, *b, *c, *d;
331 b = uv_e0[i + 1].node;
332 gp_Pnt pb (b->X(), b->Y(), b->Z());
334 // find node c in the regular grid, which will be linked with node b
337 // right bound reached, link with the rightmost node
339 c = quad->uv_grid[nbhoriz + iup].node;
342 // find in the grid node c, nearest to the b
343 double mind = RealLast();
344 for (int k = g; k <= iup; k++) {
346 const SMDS_MeshNode *nk;
347 if (k < ilow) // this can be, if left edge is out
348 nk = uv_e3[1].node; // get node from the left edge
350 nk = quad->uv_grid[nbhoriz + k].node; // get one of middle nodes
352 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
353 double dist = pb.Distance(pnk);
354 if (dist < mind - eps) {
364 if (near == g) { // make triangle
365 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
366 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
368 else { // make quadrangle
372 d = quad->uv_grid[nbhoriz + near - 1].node;
373 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
375 if(!myTrianglePreference){
376 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
377 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
380 SplitQuad(meshDS, geomFaceID, a, b, c, d);
383 // if node d is not at position g - make additional triangles
385 for (int k = near - 1; k > g; k--) {
386 c = quad->uv_grid[nbhoriz + k].node;
390 d = quad->uv_grid[nbhoriz + k - 1].node;
391 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
392 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
399 if (quad->isEdgeOut[2]) {
402 // <-<-<-<-<-<-<-<-<-<-<-<-< -- direction of processing
404 // . . . . . . . . . __ up edge nodes
405 // ___ ___ ___ ___ ___ ___ __ first row of the regular grid
407 // |___|___|___|___|___|___|
409 // |___|___|___|___|___|___|
412 int g = nbhoriz - 1; // last processed node in the regular grid
415 // if left edge is out, we will stop at a second node
416 if (quad->isEdgeOut[3]) stop++;
418 // for each node of the up edge find nearest node
419 // in the first row of the regular grid and link them
420 for (i = nbup - 1; i > stop; i--) {
421 const SMDS_MeshNode *a, *b, *c, *d;
423 b = uv_e2[i - 1].node;
424 gp_Pnt pb (b->X(), b->Y(), b->Z());
426 // find node c in the grid, which will be linked with node b
428 if (i == stop + 1) { // left bound reached, link with the leftmost node
429 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + ilow].node;
432 // find node c in the grid, nearest to the b
433 double mind = RealLast();
434 for (int k = g; k >= ilow; k--) {
435 const SMDS_MeshNode *nk;
437 nk = uv_e1[nbright - 2].node;
439 nk = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
440 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
441 double dist = pb.Distance(pnk);
442 if (dist < mind - eps) {
452 if (near == g) { // make triangle
453 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
454 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
456 else { // make quadrangle
458 d = uv_e1[nbright - 2].node;
460 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + near + 1].node;
461 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
462 if(!myTrianglePreference){
463 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
464 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
467 SplitQuad(meshDS, geomFaceID, a, b, c, d);
470 if (near + 1 < g) { // if d not is at g - make additional triangles
471 for (int k = near + 1; k < g; k++) {
472 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
474 d = uv_e1[nbright - 2].node;
476 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + k + 1].node;
477 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
478 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
487 // right or left boundary quadrangles
488 if (quad->isEdgeOut[1]) {
489 // MESSAGE("right edge is out");
490 int g = 0; // last processed node in the grid
491 int stop = nbright - 1;
492 if (quad->isEdgeOut[2]) stop--;
493 for (i = 0; i < stop; i++) {
494 const SMDS_MeshNode *a, *b, *c, *d;
496 b = uv_e1[i + 1].node;
497 gp_Pnt pb (b->X(), b->Y(), b->Z());
499 // find node c in the grid, nearest to the b
501 if (i == stop - 1) { // up bondary reached
502 c = quad->uv_grid[nbhoriz*(jup + 1) - 2].node;
505 double mind = RealLast();
506 for (int k = g; k <= jup; k++) {
507 const SMDS_MeshNode *nk;
509 nk = uv_e0[nbdown - 2].node;
511 nk = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
512 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
513 double dist = pb.Distance(pnk);
514 if (dist < mind - eps) {
524 if (near == g) { // make triangle
525 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
526 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
528 else { // make quadrangle
530 d = uv_e0[nbdown - 2].node;
532 d = quad->uv_grid[nbhoriz*near - 2].node;
533 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
535 if(!myTrianglePreference){
536 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
537 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
540 SplitQuad(meshDS, geomFaceID, a, b, c, d);
543 if (near - 1 > g) { // if d not is at g - make additional triangles
544 for (int k = near - 1; k > g; k--) {
545 c = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
547 d = uv_e0[nbdown - 2].node;
549 d = quad->uv_grid[nbhoriz*k - 2].node;
550 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
551 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
558 if (quad->isEdgeOut[3]) {
559 // MESSAGE("left edge is out");
560 int g = nbvertic - 1; // last processed node in the grid
562 if (quad->isEdgeOut[0]) stop++;
563 for (i = nbleft - 1; i > stop; i--) {
564 const SMDS_MeshNode *a, *b, *c, *d;
566 b = uv_e3[i - 1].node;
567 gp_Pnt pb (b->X(), b->Y(), b->Z());
569 // find node c in the grid, nearest to the b
571 if (i == stop + 1) { // down bondary reached
572 c = quad->uv_grid[nbhoriz*jlow + 1].node;
575 double mind = RealLast();
576 for (int k = g; k >= jlow; k--) {
577 const SMDS_MeshNode *nk;
581 nk = quad->uv_grid[nbhoriz*k + 1].node;
582 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
583 double dist = pb.Distance(pnk);
584 if (dist < mind - eps) {
594 if (near == g) { // make triangle
595 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
596 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
598 else { // make quadrangle
602 d = quad->uv_grid[nbhoriz*(near + 1) + 1].node;
603 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
604 if(!myTrianglePreference){
605 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
606 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
609 SplitQuad(meshDS, geomFaceID, a, b, c, d);
612 if (near + 1 < g) { // if d not is at g - make additional triangles
613 for (int k = near + 1; k < g; k++) {
614 c = quad->uv_grid[nbhoriz*k + 1].node;
618 d = quad->uv_grid[nbhoriz*(k + 1) + 1].node;
619 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
620 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
634 //=============================================================================
638 //=============================================================================
640 bool StdMeshers_Quadrangle_2D::Evaluate(SMESH_Mesh& aMesh,
641 const TopoDS_Shape& aShape,
642 MapShapeNbElems& aResMap)
645 aMesh.GetSubMesh(aShape);
647 std::vector<int> aNbNodes(4);
648 bool IsQuadratic = false;
649 if( !CheckNbEdgesForEvaluate( aMesh, aShape, aResMap, aNbNodes, IsQuadratic ) ) {
650 std::vector<int> aResVec(SMDSEntity_Last);
651 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
652 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
653 aResMap.insert(std::make_pair(sm,aResVec));
654 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
655 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
659 if(myQuadranglePreference) {
660 int n1 = aNbNodes[0];
661 int n2 = aNbNodes[1];
662 int n3 = aNbNodes[2];
663 int n4 = aNbNodes[3];
664 int nfull = n1+n2+n3+n4;
667 if( nfull==ntmp && ( (n1!=n3) || (n2!=n4) ) ) {
668 // special path for using only quandrangle faces
669 return EvaluateQuadPref(aMesh, aShape, aNbNodes, aResMap, IsQuadratic);
674 int nbdown = aNbNodes[0];
675 int nbup = aNbNodes[2];
677 int nbright = aNbNodes[1];
678 int nbleft = aNbNodes[3];
680 int nbhoriz = Min(nbdown, nbup);
681 int nbvertic = Min(nbright, nbleft);
683 int dh = Max(nbdown, nbup) - nbhoriz;
684 int dv = Max(nbright, nbleft) - nbvertic;
691 int nbNodes = (nbhoriz-2)*(nbvertic-2);
692 //int nbFaces3 = dh + dv + kdh*(nbvertic-1)*2 + kdv*(nbhoriz-1)*2;
693 int nbFaces3 = dh + dv;
694 //if( kdh==1 && kdv==1 ) nbFaces3 -= 2;
695 //if( dh>0 && dv>0 ) nbFaces3 -= 2;
696 //int nbFaces4 = (nbhoriz-1-kdh)*(nbvertic-1-kdv);
697 int nbFaces4 = (nbhoriz-1)*(nbvertic-1);
699 std::vector<int> aVec(SMDSEntity_Last);
700 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
702 aVec[SMDSEntity_Quad_Triangle] = nbFaces3;
703 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4;
704 int nbbndedges = nbdown + nbup + nbright + nbleft -4;
705 int nbintedges = ( nbFaces4*4 + nbFaces3*3 - nbbndedges ) / 2;
706 aVec[SMDSEntity_Node] = nbNodes + nbintedges;
707 if( aNbNodes.size()==5 ) {
708 aVec[SMDSEntity_Quad_Triangle] = nbFaces3 + aNbNodes[3] -1;
709 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4 - aNbNodes[3] +1;
713 aVec[SMDSEntity_Node] = nbNodes;
714 aVec[SMDSEntity_Triangle] = nbFaces3;
715 aVec[SMDSEntity_Quadrangle] = nbFaces4;
716 if( aNbNodes.size()==5 ) {
717 aVec[SMDSEntity_Triangle] = nbFaces3 + aNbNodes[3] - 1;
718 aVec[SMDSEntity_Quadrangle] = nbFaces4 - aNbNodes[3] + 1;
721 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
722 aResMap.insert(std::make_pair(sm,aVec));
728 //================================================================================
730 * \brief Return true if only two given edges meat at their common vertex
732 //================================================================================
734 static bool twoEdgesMeatAtVertex(const TopoDS_Edge& e1,
735 const TopoDS_Edge& e2,
739 if ( !TopExp::CommonVertex( e1, e2, v ))
741 TopTools_ListIteratorOfListOfShape ancestIt( mesh.GetAncestors( v ));
742 for ( ; ancestIt.More() ; ancestIt.Next() )
743 if ( ancestIt.Value().ShapeType() == TopAbs_EDGE )
744 if ( !e1.IsSame( ancestIt.Value() ) && !e2.IsSame( ancestIt.Value() ))
749 //=============================================================================
753 //=============================================================================
755 FaceQuadStruct* StdMeshers_Quadrangle_2D::CheckNbEdges(SMESH_Mesh & aMesh,
756 const TopoDS_Shape & aShape)
757 //throw(SALOME_Exception)
759 const TopoDS_Face & F = TopoDS::Face(aShape);
760 const bool ignoreMediumNodes = _quadraticMesh;
762 // verify 1 wire only, with 4 edges
764 list< TopoDS_Edge > edges;
765 list< int > nbEdgesInWire;
766 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
768 error(COMPERR_BAD_SHAPE, TComm("Wrong number of wires: ") << nbWire);
771 FaceQuadStruct* quad = new FaceQuadStruct;
773 quad->side.reserve(nbEdgesInWire.front());
776 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
777 if ( nbEdgesInWire.front() == 3 ) // exactly 3 edges
779 SMESH_Comment comment;
780 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
781 if ( myTriaVertexID == -1)
783 comment << "No Base vertex parameter provided for a trilateral geometrical face";
787 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
789 TopoDS_Edge E1,E2,E3;
790 for(; edgeIt != edges.end(); ++edgeIt) {
791 TopoDS_Edge E = *edgeIt;
792 TopoDS_Vertex VF, VL;
793 TopExp::Vertices(E, VF, VL, true);
796 else if( VL.IsSame(V) )
801 if ( !E1.IsNull() && !E2.IsNull() && !E3.IsNull() )
803 quad->side.push_back( new StdMeshers_FaceSide(F, E1, &aMesh, true, ignoreMediumNodes));
804 quad->side.push_back( new StdMeshers_FaceSide(F, E2, &aMesh, true, ignoreMediumNodes));
805 quad->side.push_back( new StdMeshers_FaceSide(F, E3, &aMesh, false,ignoreMediumNodes));
806 const vector<UVPtStruct>& UVPSleft = quad->side[0]->GetUVPtStruct(true,0);
807 /* vector<UVPtStruct>& UVPStop = */quad->side[1]->GetUVPtStruct(false,1);
808 /* vector<UVPtStruct>& UVPSright = */quad->side[2]->GetUVPtStruct(true,1);
809 const SMDS_MeshNode* aNode = UVPSleft[0].node;
810 gp_Pnt2d aPnt2d( UVPSleft[0].u, UVPSleft[0].v );
811 quad->side.push_back( new StdMeshers_FaceSide(aNode, aPnt2d, quad->side[1]));
815 comment << "Invalid Base vertex parameter: " << myTriaVertexID << " is not among [";
816 TopTools_MapOfShape vMap;
817 for ( TopExp_Explorer v( aShape, TopAbs_VERTEX ); v.More(); v.Next())
818 if ( vMap.Add( v.Current() ))
819 comment << meshDS->ShapeToIndex( v.Current() ) << ( vMap.Extent()==3 ? "]" : ", ");
825 else if ( nbEdgesInWire.front() == 4 ) { // exactly 4 edges
826 for ( ; edgeIt != edges.end(); ++edgeIt, nbSides++ )
827 quad->side.push_back( new StdMeshers_FaceSide(F, *edgeIt, &aMesh,
828 nbSides<TOP_SIDE, ignoreMediumNodes));
830 else if ( nbEdgesInWire.front() > 4 ) { // more than 4 edges - try to unite some
831 list< TopoDS_Edge > sideEdges;
832 while ( !edges.empty()) {
834 sideEdges.splice( sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
835 bool sameSide = true;
836 while ( !edges.empty() && sameSide ) {
837 sameSide = SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() );
839 sideEdges.splice( sideEdges.end(), edges, edges.begin());
841 if ( nbSides == 0 ) { // go backward from the first edge
843 while ( !edges.empty() && sameSide ) {
844 sameSide = SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() );
846 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
849 quad->side.push_back( new StdMeshers_FaceSide(F, sideEdges, &aMesh,
850 nbSides<TOP_SIDE, ignoreMediumNodes));
853 // issue 20222. Try to unite only edges shared by two same faces
855 // delete found sides
856 { FaceQuadStruct cleaner( *quad ); }
858 quad->side.reserve(nbEdgesInWire.front());
861 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
862 while ( !edges.empty()) {
864 sideEdges.splice( sideEdges.end(), edges, edges.begin());
865 bool sameSide = true;
866 while ( !edges.empty() && sameSide ) {
868 SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() ) &&
869 twoEdgesMeatAtVertex( sideEdges.back(), edges.front(), aMesh );
871 sideEdges.splice( sideEdges.end(), edges, edges.begin());
873 if ( nbSides == 0 ) { // go backward from the first edge
875 while ( !edges.empty() && sameSide ) {
877 SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() ) &&
878 twoEdgesMeatAtVertex( sideEdges.front(), edges.back(), aMesh );
880 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
883 quad->side.push_back( new StdMeshers_FaceSide(F, sideEdges, &aMesh,
884 nbSides<TOP_SIDE, ignoreMediumNodes));
891 MESSAGE ( "StdMeshers_Quadrangle_2D. Edge IDs of " << nbSides << " sides:\n" );
892 for ( int i = 0; i < nbSides; ++i ) {
894 for ( int e = 0; e < quad->side[i]->NbEdges(); ++e )
895 MESSAGE ( myTool->GetMeshDS()->ShapeToIndex( quad->side[i]->Edge( e )) << " " );
901 nbSides = nbEdgesInWire.front();
902 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
911 //=============================================================================
915 //=============================================================================
917 bool StdMeshers_Quadrangle_2D::CheckNbEdgesForEvaluate(SMESH_Mesh& aMesh,
918 const TopoDS_Shape & aShape,
919 MapShapeNbElems& aResMap,
920 std::vector<int>& aNbNodes,
924 const TopoDS_Face & F = TopoDS::Face(aShape);
926 // verify 1 wire only, with 4 edges
928 list< TopoDS_Edge > edges;
929 list< int > nbEdgesInWire;
930 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
938 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
939 SMESH_subMesh * sm = aMesh.GetSubMesh( *edgeIt );
940 MapShapeNbElemsItr anIt = aResMap.find(sm);
941 if(anIt==aResMap.end()) {
944 std::vector<int> aVec = (*anIt).second;
945 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
946 if ( nbEdgesInWire.front() == 3 ) { // exactly 3 edges
947 if(myTriaVertexID>0) {
948 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
949 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
951 TopoDS_Edge E1,E2,E3;
952 for(; edgeIt != edges.end(); ++edgeIt) {
953 TopoDS_Edge E = TopoDS::Edge(*edgeIt);
954 TopoDS_Vertex VF, VL;
955 TopExp::Vertices(E, VF, VL, true);
958 else if( VL.IsSame(V) )
963 SMESH_subMesh * sm = aMesh.GetSubMesh(E1);
964 MapShapeNbElemsItr anIt = aResMap.find(sm);
965 if(anIt==aResMap.end()) return false;
966 std::vector<int> aVec = (*anIt).second;
968 aNbNodes[0] = (aVec[SMDSEntity_Node]-1)/2 + 2;
970 aNbNodes[0] = aVec[SMDSEntity_Node] + 2;
971 sm = aMesh.GetSubMesh(E2);
972 anIt = aResMap.find(sm);
973 if(anIt==aResMap.end()) return false;
974 aVec = (*anIt).second;
976 aNbNodes[1] = (aVec[SMDSEntity_Node]-1)/2 + 2;
978 aNbNodes[1] = aVec[SMDSEntity_Node] + 2;
979 sm = aMesh.GetSubMesh(E3);
980 anIt = aResMap.find(sm);
981 if(anIt==aResMap.end()) return false;
982 aVec = (*anIt).second;
984 aNbNodes[2] = (aVec[SMDSEntity_Node]-1)/2 + 2;
986 aNbNodes[2] = aVec[SMDSEntity_Node] + 2;
987 aNbNodes[3] = aNbNodes[1];
993 if ( nbEdgesInWire.front() == 4 ) { // exactly 4 edges
994 for(; edgeIt != edges.end(); edgeIt++) {
995 SMESH_subMesh * sm = aMesh.GetSubMesh( *edgeIt );
996 MapShapeNbElemsItr anIt = aResMap.find(sm);
997 if(anIt==aResMap.end()) {
1000 std::vector<int> aVec = (*anIt).second;
1002 aNbNodes[nbSides] = (aVec[SMDSEntity_Node]-1)/2 + 2;
1004 aNbNodes[nbSides] = aVec[SMDSEntity_Node] + 2;
1008 else if ( nbEdgesInWire.front() > 4 ) { // more than 4 edges - try to unite some
1009 list< TopoDS_Edge > sideEdges;
1010 while ( !edges.empty()) {
1012 sideEdges.splice( sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
1013 bool sameSide = true;
1014 while ( !edges.empty() && sameSide ) {
1015 sameSide = SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() );
1017 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1019 if ( nbSides == 0 ) { // go backward from the first edge
1021 while ( !edges.empty() && sameSide ) {
1022 sameSide = SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() );
1024 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
1027 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1028 aNbNodes[nbSides] = 1;
1029 for(; ite!=sideEdges.end(); ite++) {
1030 SMESH_subMesh * sm = aMesh.GetSubMesh( *ite );
1031 MapShapeNbElemsItr anIt = aResMap.find(sm);
1032 if(anIt==aResMap.end()) {
1035 std::vector<int> aVec = (*anIt).second;
1037 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1039 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1043 // issue 20222. Try to unite only edges shared by two same faces
1046 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
1047 while ( !edges.empty()) {
1049 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1050 bool sameSide = true;
1051 while ( !edges.empty() && sameSide ) {
1053 SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() ) &&
1054 twoEdgesMeatAtVertex( sideEdges.back(), edges.front(), aMesh );
1056 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1058 if ( nbSides == 0 ) { // go backward from the first edge
1060 while ( !edges.empty() && sameSide ) {
1062 SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() ) &&
1063 twoEdgesMeatAtVertex( sideEdges.front(), edges.back(), aMesh );
1065 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
1068 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1069 aNbNodes[nbSides] = 1;
1070 for(; ite!=sideEdges.end(); ite++) {
1071 SMESH_subMesh * sm = aMesh.GetSubMesh( *ite );
1072 MapShapeNbElemsItr anIt = aResMap.find(sm);
1073 if(anIt==aResMap.end()) {
1076 std::vector<int> aVec = (*anIt).second;
1078 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1080 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1088 nbSides = nbEdgesInWire.front();
1089 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
1097 //=============================================================================
1101 //=============================================================================
1103 FaceQuadStruct *StdMeshers_Quadrangle_2D::CheckAnd2Dcompute
1104 (SMESH_Mesh & aMesh,
1105 const TopoDS_Shape & aShape,
1106 const bool CreateQuadratic) //throw(SALOME_Exception)
1108 _quadraticMesh = CreateQuadratic;
1110 FaceQuadStruct *quad = CheckNbEdges(aMesh, aShape);
1114 // set normalized grid on unit square in parametric domain
1115 bool stat = SetNormalizedGrid(aMesh, aShape, quad);
1125 //=============================================================================
1129 //=============================================================================
1131 faceQuadStruct::~faceQuadStruct()
1133 for (int i = 0; i < side.size(); i++) {
1134 if (side[i]) delete side[i];
1136 if (uv_grid) delete [] uv_grid;
1140 inline const vector<UVPtStruct>& GetUVPtStructIn(FaceQuadStruct* quad, int i, int nbSeg)
1142 bool isXConst = ( i == BOTTOM_SIDE || i == TOP_SIDE );
1143 double constValue = ( i == BOTTOM_SIDE || i == LEFT_SIDE ) ? 0 : 1;
1145 quad->isEdgeOut[i] ?
1146 quad->side[i]->SimulateUVPtStruct(nbSeg,isXConst,constValue) :
1147 quad->side[i]->GetUVPtStruct(isXConst,constValue);
1151 //=============================================================================
1155 //=============================================================================
1157 bool StdMeshers_Quadrangle_2D::SetNormalizedGrid (SMESH_Mesh & aMesh,
1158 const TopoDS_Shape& aShape,
1159 FaceQuadStruct* & quad) //throw (SALOME_Exception)
1161 // Algorithme décrit dans "Génération automatique de maillages"
1162 // P.L. GEORGE, MASSON, § 6.4.1 p. 84-85
1163 // traitement dans le domaine paramétrique 2d u,v
1164 // transport - projection sur le carré unité
1166 // MESSAGE("StdMeshers_Quadrangle_2D::SetNormalizedGrid");
1167 // const TopoDS_Face& F = TopoDS::Face(aShape);
1169 // 1 --- find orientation of the 4 edges, by test on extrema
1172 // |<----north-2-------^ a3 -------------> a2
1174 // west-3 east-1 =right | |
1178 // v----south-0--------> a0 -------------> a1
1183 // 3 --- 2D normalized values on unit square [0..1][0..1]
1185 int nbhoriz = Min(quad->side[0]->NbPoints(), quad->side[2]->NbPoints());
1186 int nbvertic = Min(quad->side[1]->NbPoints(), quad->side[3]->NbPoints());
1188 quad->isEdgeOut[0] = (quad->side[0]->NbPoints() > quad->side[2]->NbPoints());
1189 quad->isEdgeOut[1] = (quad->side[1]->NbPoints() > quad->side[3]->NbPoints());
1190 quad->isEdgeOut[2] = (quad->side[2]->NbPoints() > quad->side[0]->NbPoints());
1191 quad->isEdgeOut[3] = (quad->side[3]->NbPoints() > quad->side[1]->NbPoints());
1193 UVPtStruct *uv_grid = quad->uv_grid = new UVPtStruct[nbvertic * nbhoriz];
1195 const vector<UVPtStruct>& uv_e0 = GetUVPtStructIn( quad, 0, nbhoriz - 1 );
1196 const vector<UVPtStruct>& uv_e1 = GetUVPtStructIn( quad, 1, nbvertic - 1 );
1197 const vector<UVPtStruct>& uv_e2 = GetUVPtStructIn( quad, 2, nbhoriz - 1 );
1198 const vector<UVPtStruct>& uv_e3 = GetUVPtStructIn( quad, 3, nbvertic - 1 );
1200 if ( uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty() )
1201 //return error( "Can't find nodes on sides");
1202 return error( COMPERR_BAD_INPUT_MESH );
1204 // nodes Id on "in" edges
1205 if (! quad->isEdgeOut[0]) {
1207 for (int i = 0; i < nbhoriz; i++) { // down
1208 int ij = j * nbhoriz + i;
1209 uv_grid[ij].node = uv_e0[i].node;
1212 if (! quad->isEdgeOut[1]) {
1213 int i = nbhoriz - 1;
1214 for (int j = 0; j < nbvertic; j++) { // right
1215 int ij = j * nbhoriz + i;
1216 uv_grid[ij].node = uv_e1[j].node;
1219 if (! quad->isEdgeOut[2]) {
1220 int j = nbvertic - 1;
1221 for (int i = 0; i < nbhoriz; i++) { // up
1222 int ij = j * nbhoriz + i;
1223 uv_grid[ij].node = uv_e2[i].node;
1226 if (! quad->isEdgeOut[3]) {
1228 for (int j = 0; j < nbvertic; j++) { // left
1229 int ij = j * nbhoriz + i;
1230 uv_grid[ij].node = uv_e3[j].node;
1234 // normalized 2d values on grid
1235 for (int i = 0; i < nbhoriz; i++) {
1236 for (int j = 0; j < nbvertic; j++) {
1237 int ij = j * nbhoriz + i;
1238 // --- droite i cste : x = x0 + y(x1-x0)
1239 double x0 = uv_e0[i].normParam; // bas - sud
1240 double x1 = uv_e2[i].normParam; // haut - nord
1241 // --- droite j cste : y = y0 + x(y1-y0)
1242 double y0 = uv_e3[j].normParam; // gauche-ouest
1243 double y1 = uv_e1[j].normParam; // droite - est
1244 // --- intersection : x=x0+(y0+x(y1-y0))(x1-x0)
1245 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1246 double y = y0 + x * (y1 - y0);
1249 //MESSAGE("-xy-01 "<<x0<<" "<<x1<<" "<<y0<<" "<<y1);
1250 //MESSAGE("-xy-norm "<<i<<" "<<j<<" "<<x<<" "<<y);
1254 // 4 --- projection on 2d domain (u,v)
1255 gp_UV a0( uv_e0.front().u, uv_e0.front().v );
1256 gp_UV a1( uv_e0.back().u, uv_e0.back().v );
1257 gp_UV a2( uv_e2.back().u, uv_e2.back().v );
1258 gp_UV a3( uv_e2.front().u, uv_e2.front().v );
1260 for (int i = 0; i < nbhoriz; i++) {
1261 for (int j = 0; j < nbvertic; j++) {
1262 int ij = j * nbhoriz + i;
1263 double x = uv_grid[ij].x;
1264 double y = uv_grid[ij].y;
1265 double param_0 = uv_e0[0].normParam + x * (uv_e0.back().normParam - uv_e0[0].normParam); // sud
1266 double param_2 = uv_e2[0].normParam + x * (uv_e2.back().normParam - uv_e2[0].normParam); // nord
1267 double param_1 = uv_e1[0].normParam + y * (uv_e1.back().normParam - uv_e1[0].normParam); // est
1268 double param_3 = uv_e3[0].normParam + y * (uv_e3.back().normParam - uv_e3[0].normParam); // ouest
1270 //MESSAGE("params "<<param_0<<" "<<param_1<<" "<<param_2<<" "<<param_3);
1271 gp_UV p0 = quad->side[0]->Value2d(param_0).XY();
1272 gp_UV p1 = quad->side[1]->Value2d(param_1).XY();
1273 gp_UV p2 = quad->side[2]->Value2d(param_2).XY();
1274 gp_UV p3 = quad->side[3]->Value2d(param_3).XY();
1276 gp_UV uv = (1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3;
1277 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1279 uv_grid[ij].u = uv.X();
1280 uv_grid[ij].v = uv.Y();
1286 //=======================================================================
1287 //function : ShiftQuad
1288 //purpose : auxilary function for ComputeQuadPref
1289 //=======================================================================
1291 static void ShiftQuad(FaceQuadStruct* quad, const int num, bool)
1293 StdMeshers_FaceSide* side[4] = { quad->side[0], quad->side[1], quad->side[2], quad->side[3] };
1294 for (int i = BOTTOM_SIDE; i < NB_SIDES; ++i ) {
1295 int id = ( i + num ) % NB_SIDES;
1296 bool wasForward = ( i < TOP_SIDE );
1297 bool newForward = ( id < TOP_SIDE );
1298 if ( wasForward != newForward )
1299 side[ i ]->Reverse();
1300 quad->side[ id ] = side[ i ];
1304 //=======================================================================
1306 //purpose : auxilary function for ComputeQuadPref
1307 //=======================================================================
1309 static gp_UV CalcUV(double x0, double x1, double y0, double y1,
1310 FaceQuadStruct* quad,
1311 const gp_UV& a0, const gp_UV& a1,
1312 const gp_UV& a2, const gp_UV& a3)
1314 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1315 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1316 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1317 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1319 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1320 double y = y0 + x * (y1 - y0);
1322 double param_b = uv_eb[0].normParam + x * (uv_eb.back().normParam - uv_eb[0].normParam);
1323 double param_t = uv_et[0].normParam + x * (uv_et.back().normParam - uv_et[0].normParam);
1324 double param_r = uv_er[0].normParam + y * (uv_er.back().normParam - uv_er[0].normParam);
1325 double param_l = uv_el[0].normParam + y * (uv_el.back().normParam - uv_el[0].normParam);
1327 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(param_b).XY();
1328 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(param_r).XY();
1329 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(param_t).XY();
1330 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(param_l).XY();
1332 gp_UV uv = p0 * (1 - y) + p1 * x + p2 * y + p3 * (1 - x);
1334 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1339 //=======================================================================
1340 //function : CalcUV2
1341 //purpose : auxilary function for ComputeQuadPref
1342 //=======================================================================
1344 static gp_UV CalcUV2(double x, double y,
1345 FaceQuadStruct* quad,
1346 const gp_UV& a0, const gp_UV& a1,
1347 const gp_UV& a2, const gp_UV& a3)
1349 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1350 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1351 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1352 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1354 //double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1355 //double y = y0 + x * (y1 - y0);
1357 double param_b = uv_eb[0].normParam + x * (uv_eb.back().normParam - uv_eb[0].normParam);
1358 double param_t = uv_et[0].normParam + x * (uv_et.back().normParam - uv_et[0].normParam);
1359 double param_r = uv_er[0].normParam + y * (uv_er.back().normParam - uv_er[0].normParam);
1360 double param_l = uv_el[0].normParam + y * (uv_el.back().normParam - uv_el[0].normParam);
1362 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(param_b).XY();
1363 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(param_r).XY();
1364 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(param_t).XY();
1365 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(param_l).XY();
1367 gp_UV uv = p0 * (1 - y) + p1 * x + p2 * y + p3 * (1 - x);
1369 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1375 //=======================================================================
1377 * Create only quandrangle faces
1379 //=======================================================================
1381 bool StdMeshers_Quadrangle_2D::ComputeQuadPref (SMESH_Mesh & aMesh,
1382 const TopoDS_Shape& aShape,
1383 FaceQuadStruct* quad)
1385 // Auxilary key in order to keep old variant
1386 // of meshing after implementation new variant
1387 // for bug 0016220 from Mantis.
1388 bool OldVersion = false;
1390 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
1391 const TopoDS_Face& F = TopoDS::Face(aShape);
1392 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1393 // const TopoDS_Wire& W = BRepTools::OuterWire(F);
1395 // if(W.Orientation()==TopAbs_FORWARD)
1397 //if(WisF) cout<<"W is FORWARD"<<endl;
1398 //else cout<<"W is REVERSED"<<endl;
1399 // bool FisF = (F.Orientation()==TopAbs_FORWARD);
1400 // if(!FisF) WisF = !WisF;
1402 int i,j,geomFaceID = meshDS->ShapeToIndex( F );
1404 int nb = quad->side[0]->NbPoints();
1405 int nr = quad->side[1]->NbPoints();
1406 int nt = quad->side[2]->NbPoints();
1407 int nl = quad->side[3]->NbPoints();
1408 int dh = abs(nb-nt);
1409 int dv = abs(nr-nl);
1413 // it is a base case => not shift quad but me be replacement is need
1414 ShiftQuad(quad,0,WisF);
1417 // we have to shift quad on 2
1418 ShiftQuad(quad,2,WisF);
1423 // we have to shift quad on 1
1424 ShiftQuad(quad,1,WisF);
1427 // we have to shift quad on 3
1428 ShiftQuad(quad,3,WisF);
1432 nb = quad->side[0]->NbPoints();
1433 nr = quad->side[1]->NbPoints();
1434 nt = quad->side[2]->NbPoints();
1435 nl = quad->side[3]->NbPoints();
1438 int nbh = Max(nb,nt);
1439 int nbv = Max(nr,nl);
1443 // ----------- Old version ---------------
1444 // orientation of face and 3 main domain for future faces
1450 // left | | | | rigth
1457 // ----------- New version ---------------
1458 // orientation of face and 3 main domain for future faces
1464 // left |/________\| rigth
1480 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1481 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1482 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1483 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1485 // arrays for normalized params
1486 //cout<<"Dump B:"<<endl;
1487 TColStd_SequenceOfReal npb, npr, npt, npl;
1488 for(i=0; i<nb; i++) {
1489 npb.Append(uv_eb[i].normParam);
1490 //cout<<"i="<<i<<" par="<<uv_eb[i].normParam<<" npar="<<uv_eb[i].normParam;
1491 //const SMDS_MeshNode* N = uv_eb[i].node;
1492 //cout<<" node("<<N->X()<<","<<N->Y()<<","<<N->Z()<<")"<<endl;
1494 for(i=0; i<nr; i++) {
1495 npr.Append(uv_er[i].normParam);
1497 for(i=0; i<nt; i++) {
1498 npt.Append(uv_et[i].normParam);
1500 for(i=0; i<nl; i++) {
1501 npl.Append(uv_el[i].normParam);
1506 // add some params to right and left after the first param
1509 double dpr = (npr.Value(2) - npr.Value(1))/(dr+1);
1510 for(i=1; i<=dr; i++) {
1511 npr.InsertAfter(1,npr.Value(2)-dpr);
1515 dpr = (npl.Value(2) - npl.Value(1))/(dl+1);
1516 for(i=1; i<=dl; i++) {
1517 npl.InsertAfter(1,npl.Value(2)-dpr);
1521 //for(i=1; i<=npb.Length(); i++) {
1522 // cout<<" "<<npb.Value(i);
1526 gp_XY a0( uv_eb.front().u, uv_eb.front().v );
1527 gp_XY a1( uv_eb.back().u, uv_eb.back().v );
1528 gp_XY a2( uv_et.back().u, uv_et.back().v );
1529 gp_XY a3( uv_et.front().u, uv_et.front().v );
1530 //cout<<" a0("<<a0.X()<<","<<a0.Y()<<")"<<" a1("<<a1.X()<<","<<a1.Y()<<")"
1531 // <<" a2("<<a2.X()<<","<<a2.Y()<<")"<<" a3("<<a3.X()<<","<<a3.Y()<<")"<<endl;
1533 int nnn = Min(nr,nl);
1534 // auxilary sequence of XY for creation nodes
1535 // in the bottom part of central domain
1536 // it's length must be == nbv-nnn-1
1537 TColgp_SequenceOfXY UVL;
1538 TColgp_SequenceOfXY UVR;
1541 // step1: create faces for left domain
1542 StdMeshers_Array2OfNode NodesL(1,dl+1,1,nl);
1544 for(j=1; j<=nl; j++)
1545 NodesL.SetValue(1,j,uv_el[j-1].node);
1548 for(i=1; i<=dl; i++)
1549 NodesL.SetValue(i+1,nl,uv_et[i].node);
1550 // create and add needed nodes
1551 TColgp_SequenceOfXY UVtmp;
1552 for(i=1; i<=dl; i++) {
1553 double x0 = npt.Value(i+1);
1556 double y0 = npl.Value(i+1);
1557 double y1 = npr.Value(i+1);
1558 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1559 gp_Pnt P = S->Value(UV.X(),UV.Y());
1560 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1561 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1562 NodesL.SetValue(i+1,1,N);
1563 if(UVL.Length()<nbv-nnn-1) UVL.Append(UV);
1565 for(j=2; j<nl; j++) {
1566 double y0 = npl.Value(dl+j);
1567 double y1 = npr.Value(dl+j);
1568 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1569 gp_Pnt P = S->Value(UV.X(),UV.Y());
1570 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1571 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1572 NodesL.SetValue(i+1,j,N);
1573 if( i==dl ) UVtmp.Append(UV);
1576 for(i=1; i<=UVtmp.Length() && UVL.Length()<nbv-nnn-1; i++) {
1577 UVL.Append(UVtmp.Value(i));
1579 //cout<<"Dump NodesL:"<<endl;
1580 //for(i=1; i<=dl+1; i++) {
1582 // for(j=1; j<=nl; j++) {
1583 // cout<<" ("<<NodesL.Value(i,j)->X()<<","<<NodesL.Value(i,j)->Y()<<","<<NodesL.Value(i,j)->Z()<<")";
1588 for(i=1; i<=dl; i++) {
1589 for(j=1; j<nl; j++) {
1592 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i+1,j),
1593 NodesL.Value(i+1,j+1), NodesL.Value(i,j+1));
1594 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1598 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i,j+1),
1599 NodesL.Value(i+1,j+1), NodesL.Value(i+1,j));
1600 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1606 // fill UVL using c2d
1607 for(i=1; i<npl.Length() && UVL.Length()<nbv-nnn-1; i++) {
1608 UVL.Append( gp_UV ( uv_el[i].u, uv_el[i].v ));
1612 // step2: create faces for right domain
1613 StdMeshers_Array2OfNode NodesR(1,dr+1,1,nr);
1615 for(j=1; j<=nr; j++)
1616 NodesR.SetValue(1,j,uv_er[nr-j].node);
1619 for(i=1; i<=dr; i++)
1620 NodesR.SetValue(i+1,1,uv_et[nt-1-i].node);
1621 // create and add needed nodes
1622 TColgp_SequenceOfXY UVtmp;
1623 for(i=1; i<=dr; i++) {
1624 double x0 = npt.Value(nt-i);
1627 double y0 = npl.Value(i+1);
1628 double y1 = npr.Value(i+1);
1629 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1630 gp_Pnt P = S->Value(UV.X(),UV.Y());
1631 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1632 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1633 NodesR.SetValue(i+1,nr,N);
1634 if(UVR.Length()<nbv-nnn-1) UVR.Append(UV);
1636 for(j=2; j<nr; j++) {
1637 double y0 = npl.Value(nbv-j+1);
1638 double y1 = npr.Value(nbv-j+1);
1639 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1640 gp_Pnt P = S->Value(UV.X(),UV.Y());
1641 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1642 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1643 NodesR.SetValue(i+1,j,N);
1644 if( i==dr ) UVtmp.Prepend(UV);
1647 for(i=1; i<=UVtmp.Length() && UVR.Length()<nbv-nnn-1; i++) {
1648 UVR.Append(UVtmp.Value(i));
1651 for(i=1; i<=dr; i++) {
1652 for(j=1; j<nr; j++) {
1655 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i+1,j),
1656 NodesR.Value(i+1,j+1), NodesR.Value(i,j+1));
1657 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1661 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i,j+1),
1662 NodesR.Value(i+1,j+1), NodesR.Value(i+1,j));
1663 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1669 // fill UVR using c2d
1670 for(i=1; i<npr.Length() && UVR.Length()<nbv-nnn-1; i++) {
1671 UVR.Append( gp_UV( uv_er[i].u, uv_er[i].v ));
1675 // step3: create faces for central domain
1676 StdMeshers_Array2OfNode NodesC(1,nb,1,nbv);
1677 // add first string using NodesL
1678 for(i=1; i<=dl+1; i++)
1679 NodesC.SetValue(1,i,NodesL(i,1));
1680 for(i=2; i<=nl; i++)
1681 NodesC.SetValue(1,dl+i,NodesL(dl+1,i));
1682 // add last string using NodesR
1683 for(i=1; i<=dr+1; i++)
1684 NodesC.SetValue(nb,i,NodesR(i,nr));
1686 NodesC.SetValue(nb,dr+i+1,NodesR(dr+1,nr-i));
1687 // add top nodes (last columns)
1688 for(i=dl+2; i<nbh-dr; i++)
1689 NodesC.SetValue(i-dl,nbv,uv_et[i-1].node);
1690 // add bottom nodes (first columns)
1692 NodesC.SetValue(i,1,uv_eb[i-1].node);
1694 // create and add needed nodes
1695 // add linear layers
1696 for(i=2; i<nb; i++) {
1697 double x0 = npt.Value(dl+i);
1699 for(j=1; j<nnn; j++) {
1700 double y0 = npl.Value(nbv-nnn+j);
1701 double y1 = npr.Value(nbv-nnn+j);
1702 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1703 gp_Pnt P = S->Value(UV.X(),UV.Y());
1704 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1705 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1706 NodesC.SetValue(i,nbv-nnn+j,N);
1709 // add diagonal layers
1710 //cout<<"UVL.Length()="<<UVL.Length()<<" UVR.Length()="<<UVR.Length()<<endl;
1711 //cout<<"Dump UVL:"<<endl;
1712 //for(i=1; i<=UVL.Length(); i++) {
1713 // cout<<" ("<<UVL.Value(i).X()<<","<<UVL.Value(i).Y()<<")";
1716 for(i=1; i<nbv-nnn; i++) {
1717 double du = UVR.Value(i).X() - UVL.Value(i).X();
1718 double dv = UVR.Value(i).Y() - UVL.Value(i).Y();
1719 for(j=2; j<nb; j++) {
1720 double u = UVL.Value(i).X() + du*npb.Value(j);
1721 double v = UVL.Value(i).Y() + dv*npb.Value(j);
1722 gp_Pnt P = S->Value(u,v);
1723 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1724 meshDS->SetNodeOnFace(N, geomFaceID, u, v);
1725 NodesC.SetValue(j,i+1,N);
1729 for(i=1; i<nb; i++) {
1730 for(j=1; j<nbv; j++) {
1733 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1734 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1735 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1739 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1740 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1741 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1747 else { // New version (!OldVersion)
1748 // step1: create faces for bottom rectangle domain
1749 StdMeshers_Array2OfNode NodesBRD(1,nb,1,nnn-1);
1750 // fill UVL and UVR using c2d
1751 for(j=0; j<nb; j++) {
1752 NodesBRD.SetValue(j+1,1,uv_eb[j].node);
1754 for(i=1; i<nnn-1; i++) {
1755 NodesBRD.SetValue(1,i+1,uv_el[i].node);
1756 NodesBRD.SetValue(nb,i+1,uv_er[i].node);
1757 double du = uv_er[i].u - uv_el[i].u;
1758 double dv = uv_er[i].v - uv_el[i].v;
1759 for(j=2; j<nb; j++) {
1760 double u = uv_el[i].u + du*npb.Value(j);
1761 double v = uv_el[i].v + dv*npb.Value(j);
1762 gp_Pnt P = S->Value(u,v);
1763 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1764 meshDS->SetNodeOnFace(N, geomFaceID, u, v);
1765 NodesBRD.SetValue(j,i+1,N);
1770 for(j=1; j<nnn-1; j++) {
1771 for(i=1; i<nb; i++) {
1775 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i+1,j),
1776 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i,j+1));
1777 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1781 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i,j+1),
1782 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i+1,j));
1783 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1787 int drl = abs(nr-nl);
1788 // create faces for region C
1789 StdMeshers_Array2OfNode NodesC(1,nb,1,drl+1+addv);
1790 // add nodes from previous region
1791 for(j=1; j<=nb; j++) {
1792 NodesC.SetValue(j,1,NodesBRD.Value(j,nnn-1));
1794 if( (drl+addv) > 0 ) {
1799 TColgp_SequenceOfXY UVtmp;
1800 double drparam = npr.Value(nr) - npr.Value(nnn-1);
1801 double dlparam = npl.Value(nnn) - npl.Value(nnn-1);
1803 for(i=1; i<=drl; i++) {
1804 // add existed nodes from right edge
1805 NodesC.SetValue(nb,i+1,uv_er[nnn+i-2].node);
1806 //double dtparam = npt.Value(i+1);
1807 y1 = npr.Value(nnn+i-1); // param on right edge
1808 double dpar = (y1 - npr.Value(nnn-1))/drparam;
1809 y0 = npl.Value(nnn-1) + dpar*dlparam; // param on left edge
1810 double dy = y1 - y0;
1811 for(j=1; j<nb; j++) {
1812 double x = npt.Value(i+1) + npb.Value(j)*(1-npt.Value(i+1));
1813 double y = y0 + dy*x;
1814 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1815 gp_Pnt P = S->Value(UV.X(),UV.Y());
1816 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1817 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1818 NodesC.SetValue(j,i+1,N);
1821 double dy0 = (1-y0)/(addv+1);
1822 double dy1 = (1-y1)/(addv+1);
1823 for(i=1; i<=addv; i++) {
1824 double yy0 = y0 + dy0*i;
1825 double yy1 = y1 + dy1*i;
1826 double dyy = yy1 - yy0;
1827 for(j=1; j<=nb; j++) {
1828 double x = npt.Value(i+1+drl) +
1829 npb.Value(j) * ( npt.Value(nt-i) - npt.Value(i+1+drl) );
1830 double y = yy0 + dyy*x;
1831 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1832 gp_Pnt P = S->Value(UV.X(),UV.Y());
1833 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1834 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1835 NodesC.SetValue(j,i+drl+1,N);
1842 TColgp_SequenceOfXY UVtmp;
1843 double dlparam = npl.Value(nl) - npl.Value(nnn-1);
1844 double drparam = npr.Value(nnn) - npr.Value(nnn-1);
1845 double y0 = npl.Value(nnn-1);
1846 double y1 = npr.Value(nnn-1);
1847 for(i=1; i<=drl; i++) {
1848 // add existed nodes from right edge
1849 NodesC.SetValue(1,i+1,uv_el[nnn+i-2].node);
1850 y0 = npl.Value(nnn+i-1); // param on left edge
1851 double dpar = (y0 - npl.Value(nnn-1))/dlparam;
1852 y1 = npr.Value(nnn-1) + dpar*drparam; // param on right edge
1853 double dy = y1 - y0;
1854 for(j=2; j<=nb; j++) {
1855 double x = npb.Value(j)*npt.Value(nt-i);
1856 double y = y0 + dy*x;
1857 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1858 gp_Pnt P = S->Value(UV.X(),UV.Y());
1859 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1860 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1861 NodesC.SetValue(j,i+1,N);
1864 double dy0 = (1-y0)/(addv+1);
1865 double dy1 = (1-y1)/(addv+1);
1866 for(i=1; i<=addv; i++) {
1867 double yy0 = y0 + dy0*i;
1868 double yy1 = y1 + dy1*i;
1869 double dyy = yy1 - yy0;
1870 for(j=1; j<=nb; j++) {
1871 double x = npt.Value(i+1) +
1872 npb.Value(j) * ( npt.Value(nt-i-drl) - npt.Value(i+1) );
1873 double y = yy0 + dyy*x;
1874 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1875 gp_Pnt P = S->Value(UV.X(),UV.Y());
1876 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1877 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1878 NodesC.SetValue(j,i+drl+1,N);
1883 for(j=1; j<=drl+addv; j++) {
1884 for(i=1; i<nb; i++) {
1888 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1889 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1890 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1894 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1895 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1896 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1901 StdMeshers_Array2OfNode NodesLast(1,nt,1,2);
1902 for(i=1; i<=nt; i++) {
1903 NodesLast.SetValue(i,2,uv_et[i-1].node);
1906 for(i=n1; i<drl+addv+1; i++) {
1908 NodesLast.SetValue(nnn,1,NodesC.Value(1,i));
1910 for(i=1; i<=nb; i++) {
1912 NodesLast.SetValue(nnn,1,NodesC.Value(i,drl+addv+1));
1914 for(i=drl+addv; i>=n2; i--) {
1916 NodesLast.SetValue(nnn,1,NodesC.Value(nb,i));
1918 for(i=1; i<nt; i++) {
1922 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i+1,1),
1923 NodesLast.Value(i+1,2), NodesLast.Value(i,2));
1924 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1928 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i,2),
1929 NodesLast.Value(i+1,2), NodesLast.Value(i+1,2));
1930 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1933 } // if( (drl+addv) > 0 )
1935 } // end new version implementation
1942 //=======================================================================
1944 * Evaluate only quandrangle faces
1946 //=======================================================================
1948 bool StdMeshers_Quadrangle_2D::EvaluateQuadPref(SMESH_Mesh & aMesh,
1949 const TopoDS_Shape& aShape,
1950 std::vector<int>& aNbNodes,
1951 MapShapeNbElems& aResMap,
1954 // Auxilary key in order to keep old variant
1955 // of meshing after implementation new variant
1956 // for bug 0016220 from Mantis.
1957 bool OldVersion = false;
1959 const TopoDS_Face& F = TopoDS::Face(aShape);
1960 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1962 int nb = aNbNodes[0];
1963 int nr = aNbNodes[1];
1964 int nt = aNbNodes[2];
1965 int nl = aNbNodes[3];
1966 int dh = abs(nb-nt);
1967 int dv = abs(nr-nl);
1971 // it is a base case => not shift
1974 // we have to shift on 2
1983 // we have to shift quad on 1
1990 // we have to shift quad on 3
2000 int nbh = Max(nb,nt);
2001 int nbv = Max(nr,nl);
2016 // add some params to right and left after the first param
2023 int nnn = Min(nr,nl);
2028 // step1: create faces for left domain
2030 nbNodes += dl*(nl-1);
2031 nbFaces += dl*(nl-1);
2033 // step2: create faces for right domain
2035 nbNodes += dr*(nr-1);
2036 nbFaces += dr*(nr-1);
2038 // step3: create faces for central domain
2039 nbNodes += (nb-2)*(nnn-1) + (nbv-nnn-1)*(nb-2);
2040 nbFaces += (nb-1)*(nbv-1);
2042 else { // New version (!OldVersion)
2043 nbNodes += (nnn-2)*(nb-2);
2044 nbFaces += (nnn-2)*(nb-1);
2045 int drl = abs(nr-nl);
2046 nbNodes += drl*(nb-1) + addv*nb;
2047 nbFaces += (drl+addv)*(nb-1) + (nt-1);
2048 } // end new version implementation
2050 std::vector<int> aVec(SMDSEntity_Last);
2051 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
2053 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces;
2054 aVec[SMDSEntity_Node] = nbNodes + nbFaces*4;
2055 if( aNbNodes.size()==5 ) {
2056 aVec[SMDSEntity_Quad_Triangle] = aNbNodes[3] - 1;
2057 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2061 aVec[SMDSEntity_Node] = nbNodes;
2062 aVec[SMDSEntity_Quadrangle] = nbFaces;
2063 if( aNbNodes.size()==5 ) {
2064 aVec[SMDSEntity_Triangle] = aNbNodes[3] - 1;
2065 aVec[SMDSEntity_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2068 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
2069 aResMap.insert(std::make_pair(sm,aVec));
2075 //=============================================================================
2076 /*! Split quadrangle in to 2 triangles by smallest diagonal
2079 //=============================================================================
2080 void StdMeshers_Quadrangle_2D::SplitQuad(SMESHDS_Mesh *theMeshDS,
2082 const SMDS_MeshNode* theNode1,
2083 const SMDS_MeshNode* theNode2,
2084 const SMDS_MeshNode* theNode3,
2085 const SMDS_MeshNode* theNode4)
2087 gp_Pnt a(theNode1->X(),theNode1->Y(),theNode1->Z());
2088 gp_Pnt b(theNode2->X(),theNode2->Y(),theNode2->Z());
2089 gp_Pnt c(theNode3->X(),theNode3->Y(),theNode3->Z());
2090 gp_Pnt d(theNode4->X(),theNode4->Y(),theNode4->Z());
2091 SMDS_MeshFace* face;
2092 if(a.Distance(c) > b.Distance(d)){
2093 face = myTool->AddFace(theNode2, theNode4 , theNode1);
2094 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2095 face = myTool->AddFace(theNode2, theNode3, theNode4);
2096 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2100 face = myTool->AddFace(theNode1, theNode2 ,theNode3);
2101 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2102 face = myTool->AddFace(theNode1, theNode3, theNode4);
2103 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );