1 // Copyright (C) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // SMESH SMESH : implementaion of SMESH idl descriptions
24 // File : StdMeshers_Quadrangle_2D.cxx
25 // Moved here from SMESH_Quadrangle_2D.cxx
26 // Author : Paul RASCLE, EDF
29 #include "StdMeshers_Quadrangle_2D.hxx"
31 #include "StdMeshers_FaceSide.hxx"
33 #include "StdMeshers_QuadrangleParams.hxx"
35 #include "SMESH_Gen.hxx"
36 #include "SMESH_Mesh.hxx"
37 #include "SMESH_subMesh.hxx"
38 #include "SMESH_MesherHelper.hxx"
39 #include "SMESH_Block.hxx"
40 #include "SMESH_Comment.hxx"
42 #include "SMDS_MeshElement.hxx"
43 #include "SMDS_MeshNode.hxx"
44 #include "SMDS_EdgePosition.hxx"
45 #include "SMDS_FacePosition.hxx"
47 #include <BRep_Tool.hxx>
48 #include <Geom_Surface.hxx>
49 #include <NCollection_DefineArray2.hxx>
50 #include <Precision.hxx>
51 #include <TColStd_SequenceOfReal.hxx>
52 #include <TColgp_SequenceOfXY.hxx>
54 #include <TopExp_Explorer.hxx>
55 #include <TopTools_ListIteratorOfListOfShape.hxx>
56 #include <TopTools_MapOfShape.hxx>
59 #include "utilities.h"
60 #include "Utils_ExceptHandlers.hxx"
62 #ifndef StdMeshers_Array2OfNode_HeaderFile
63 #define StdMeshers_Array2OfNode_HeaderFile
64 typedef const SMDS_MeshNode* SMDS_MeshNodePtr;
65 DEFINE_BASECOLLECTION (StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
66 DEFINE_ARRAY2(StdMeshers_Array2OfNode,
67 StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
73 typedef SMESH_Comment TComm;
75 //=============================================================================
79 //=============================================================================
81 StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D (int hypId, int studyId,
83 : SMESH_2D_Algo(hypId, studyId, gen)
85 MESSAGE("StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D");
86 _name = "Quadrangle_2D";
87 _shapeType = (1 << TopAbs_FACE);
88 _compatibleHypothesis.push_back("QuadrangleParams");
89 _compatibleHypothesis.push_back("QuadranglePreference");
90 _compatibleHypothesis.push_back("TrianglePreference");
94 //=============================================================================
98 //=============================================================================
100 StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D()
102 MESSAGE("StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D");
105 //=============================================================================
109 //=============================================================================
111 bool StdMeshers_Quadrangle_2D::CheckHypothesis
113 const TopoDS_Shape& aShape,
114 SMESH_Hypothesis::Hypothesis_Status& aStatus)
117 aStatus = SMESH_Hypothesis::HYP_OK;
119 const list <const SMESHDS_Hypothesis * >&hyps =
120 GetUsedHypothesis(aMesh, aShape, false);
121 const SMESHDS_Hypothesis *theHyp = 0;
123 if( hyps.size() == 1 ) {
125 theHyp = hyps.front();
126 if(strcmp("QuadrangleParams", theHyp->GetName()) == 0) {
127 const StdMeshers_QuadrangleParams* theHyp1 =
128 (const StdMeshers_QuadrangleParams*)theHyp;
129 myTriaVertexID = theHyp1->GetTriaVertex();
130 myQuadranglePreference= false;
131 myTrianglePreference= false;
133 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
134 myQuadranglePreference= true;
135 myTrianglePreference= false;
138 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
139 myQuadranglePreference= false;
140 myTrianglePreference= true;
145 else if( hyps.size() > 1 ) {
146 theHyp = hyps.front();
147 if(strcmp("QuadrangleParams", theHyp->GetName()) == 0) {
148 const StdMeshers_QuadrangleParams* theHyp1 =
149 (const StdMeshers_QuadrangleParams*)theHyp;
150 myTriaVertexID = theHyp1->GetTriaVertex();
151 theHyp = hyps.back();
152 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
153 myQuadranglePreference= true;
154 myTrianglePreference= false;
156 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
157 myQuadranglePreference= false;
158 myTrianglePreference= true;
162 if(strcmp("QuadranglePreference", theHyp->GetName()) == 0) {
163 myQuadranglePreference= true;
164 myTrianglePreference= false;
166 else if(strcmp("TrianglePreference", theHyp->GetName()) == 0){
167 myQuadranglePreference= false;
168 myTrianglePreference= true;
170 const StdMeshers_QuadrangleParams* theHyp2 =
171 (const StdMeshers_QuadrangleParams*)hyps.back();
172 myTriaVertexID = theHyp2->GetTriaVertex();
177 myQuadranglePreference = false;
178 myTrianglePreference = false;
185 //=============================================================================
189 //=============================================================================
191 bool StdMeshers_Quadrangle_2D::Compute (SMESH_Mesh& aMesh,
192 const TopoDS_Shape& aShape)// throw (SALOME_Exception)
194 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
195 //Unexpect aCatchSalomeException);
197 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
198 aMesh.GetSubMesh(aShape);
200 SMESH_MesherHelper helper(aMesh);
203 _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
205 FaceQuadStruct *quad = CheckNbEdges( aMesh, aShape );
206 std::auto_ptr<FaceQuadStruct> quadDeleter( quad ); // to delete quad at exit from Compute()
210 if(myQuadranglePreference) {
211 int n1 = quad->side[0]->NbPoints();
212 int n2 = quad->side[1]->NbPoints();
213 int n3 = quad->side[2]->NbPoints();
214 int n4 = quad->side[3]->NbPoints();
215 int nfull = n1+n2+n3+n4;
218 if( nfull==ntmp && ( (n1!=n3) || (n2!=n4) ) ) {
219 // special path for using only quandrangle faces
220 bool ok = ComputeQuadPref(aMesh, aShape, quad);
225 // set normalized grid on unit square in parametric domain
227 if (!SetNormalizedGrid(aMesh, aShape, quad))
230 // --- compute 3D values on points, store points & quadrangles
232 int nbdown = quad->side[0]->NbPoints();
233 int nbup = quad->side[2]->NbPoints();
235 int nbright = quad->side[1]->NbPoints();
236 int nbleft = quad->side[3]->NbPoints();
238 int nbhoriz = Min(nbdown, nbup);
239 int nbvertic = Min(nbright, nbleft);
241 const TopoDS_Face& F = TopoDS::Face(aShape);
242 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
244 // internal mesh nodes
245 int i, j, geomFaceID = meshDS->ShapeToIndex( F );
246 for (i = 1; i < nbhoriz - 1; i++) {
247 for (j = 1; j < nbvertic - 1; j++) {
248 int ij = j * nbhoriz + i;
249 double u = quad->uv_grid[ij].u;
250 double v = quad->uv_grid[ij].v;
251 gp_Pnt P = S->Value(u, v);
252 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
253 meshDS->SetNodeOnFace(node, geomFaceID, u, v);
254 quad->uv_grid[ij].node = node;
261 // --.--.--.--.--.-- nbvertic
267 // ---.----.----.--- 0
268 // 0 > > > > > > > > nbhoriz
274 int iup = nbhoriz - 1;
275 if (quad->isEdgeOut[3]) { ilow++; } else { if (quad->isEdgeOut[1]) iup--; }
278 int jup = nbvertic - 1;
279 if (quad->isEdgeOut[0]) { jlow++; } else { if (quad->isEdgeOut[2]) jup--; }
281 // regular quadrangles
282 for (i = ilow; i < iup; i++) {
283 for (j = jlow; j < jup; j++) {
284 const SMDS_MeshNode *a, *b, *c, *d;
285 a = quad->uv_grid[j * nbhoriz + i].node;
286 b = quad->uv_grid[j * nbhoriz + i + 1].node;
287 c = quad->uv_grid[(j + 1) * nbhoriz + i + 1].node;
288 d = quad->uv_grid[(j + 1) * nbhoriz + i].node;
289 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
291 meshDS->SetMeshElementOnShape(face, geomFaceID);
296 const vector<UVPtStruct>& uv_e0 = quad->side[0]->GetUVPtStruct(true,0 );
297 const vector<UVPtStruct>& uv_e1 = quad->side[1]->GetUVPtStruct(false,1);
298 const vector<UVPtStruct>& uv_e2 = quad->side[2]->GetUVPtStruct(true,1 );
299 const vector<UVPtStruct>& uv_e3 = quad->side[3]->GetUVPtStruct(false,0);
301 if ( uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty() )
302 return error( COMPERR_BAD_INPUT_MESH );
304 double eps = Precision::Confusion();
306 // Boundary quadrangles
308 if (quad->isEdgeOut[0]) {
311 // |___|___|___|___|___|___|
313 // |___|___|___|___|___|___|
315 // |___|___|___|___|___|___| __ first row of the regular grid
316 // . . . . . . . . . __ down edge nodes
318 // >->->->->->->->->->->->-> -- direction of processing
320 int g = 0; // number of last processed node in the regular grid
322 // number of last node of the down edge to be processed
323 int stop = nbdown - 1;
324 // if right edge is out, we will stop at a node, previous to the last one
325 if (quad->isEdgeOut[1]) stop--;
327 // for each node of the down edge find nearest node
328 // in the first row of the regular grid and link them
329 for (i = 0; i < stop; i++) {
330 const SMDS_MeshNode *a, *b, *c, *d;
332 b = uv_e0[i + 1].node;
333 gp_Pnt pb (b->X(), b->Y(), b->Z());
335 // find node c in the regular grid, which will be linked with node b
338 // right bound reached, link with the rightmost node
340 c = quad->uv_grid[nbhoriz + iup].node;
343 // find in the grid node c, nearest to the b
344 double mind = RealLast();
345 for (int k = g; k <= iup; k++) {
347 const SMDS_MeshNode *nk;
348 if (k < ilow) // this can be, if left edge is out
349 nk = uv_e3[1].node; // get node from the left edge
351 nk = quad->uv_grid[nbhoriz + k].node; // get one of middle nodes
353 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
354 double dist = pb.Distance(pnk);
355 if (dist < mind - eps) {
365 if (near == g) { // make triangle
366 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
367 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
369 else { // make quadrangle
373 d = quad->uv_grid[nbhoriz + near - 1].node;
374 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
376 if(!myTrianglePreference){
377 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
378 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
381 SplitQuad(meshDS, geomFaceID, a, b, c, d);
384 // if node d is not at position g - make additional triangles
386 for (int k = near - 1; k > g; k--) {
387 c = quad->uv_grid[nbhoriz + k].node;
391 d = quad->uv_grid[nbhoriz + k - 1].node;
392 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
393 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
400 if (quad->isEdgeOut[2]) {
403 // <-<-<-<-<-<-<-<-<-<-<-<-< -- direction of processing
405 // . . . . . . . . . __ up edge nodes
406 // ___ ___ ___ ___ ___ ___ __ first row of the regular grid
408 // |___|___|___|___|___|___|
410 // |___|___|___|___|___|___|
413 int g = nbhoriz - 1; // last processed node in the regular grid
416 // if left edge is out, we will stop at a second node
417 if (quad->isEdgeOut[3]) stop++;
419 // for each node of the up edge find nearest node
420 // in the first row of the regular grid and link them
421 for (i = nbup - 1; i > stop; i--) {
422 const SMDS_MeshNode *a, *b, *c, *d;
424 b = uv_e2[i - 1].node;
425 gp_Pnt pb (b->X(), b->Y(), b->Z());
427 // find node c in the grid, which will be linked with node b
429 if (i == stop + 1) { // left bound reached, link with the leftmost node
430 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + ilow].node;
433 // find node c in the grid, nearest to the b
434 double mind = RealLast();
435 for (int k = g; k >= ilow; k--) {
436 const SMDS_MeshNode *nk;
438 nk = uv_e1[nbright - 2].node;
440 nk = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
441 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
442 double dist = pb.Distance(pnk);
443 if (dist < mind - eps) {
453 if (near == g) { // make triangle
454 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
455 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
457 else { // make quadrangle
459 d = uv_e1[nbright - 2].node;
461 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + near + 1].node;
462 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
463 if(!myTrianglePreference){
464 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
465 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
468 SplitQuad(meshDS, geomFaceID, a, b, c, d);
471 if (near + 1 < g) { // if d not is at g - make additional triangles
472 for (int k = near + 1; k < g; k++) {
473 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
475 d = uv_e1[nbright - 2].node;
477 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + k + 1].node;
478 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
479 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
488 // right or left boundary quadrangles
489 if (quad->isEdgeOut[1]) {
490 // MESSAGE("right edge is out");
491 int g = 0; // last processed node in the grid
492 int stop = nbright - 1;
493 if (quad->isEdgeOut[2]) stop--;
494 for (i = 0; i < stop; i++) {
495 const SMDS_MeshNode *a, *b, *c, *d;
497 b = uv_e1[i + 1].node;
498 gp_Pnt pb (b->X(), b->Y(), b->Z());
500 // find node c in the grid, nearest to the b
502 if (i == stop - 1) { // up bondary reached
503 c = quad->uv_grid[nbhoriz*(jup + 1) - 2].node;
506 double mind = RealLast();
507 for (int k = g; k <= jup; k++) {
508 const SMDS_MeshNode *nk;
510 nk = uv_e0[nbdown - 2].node;
512 nk = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
513 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
514 double dist = pb.Distance(pnk);
515 if (dist < mind - eps) {
525 if (near == g) { // make triangle
526 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
527 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
529 else { // make quadrangle
531 d = uv_e0[nbdown - 2].node;
533 d = quad->uv_grid[nbhoriz*near - 2].node;
534 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
536 if(!myTrianglePreference){
537 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
538 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
541 SplitQuad(meshDS, geomFaceID, a, b, c, d);
544 if (near - 1 > g) { // if d not is at g - make additional triangles
545 for (int k = near - 1; k > g; k--) {
546 c = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
548 d = uv_e0[nbdown - 2].node;
550 d = quad->uv_grid[nbhoriz*k - 2].node;
551 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
552 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
559 if (quad->isEdgeOut[3]) {
560 // MESSAGE("left edge is out");
561 int g = nbvertic - 1; // last processed node in the grid
563 if (quad->isEdgeOut[0]) stop++;
564 for (i = nbleft - 1; i > stop; i--) {
565 const SMDS_MeshNode *a, *b, *c, *d;
567 b = uv_e3[i - 1].node;
568 gp_Pnt pb (b->X(), b->Y(), b->Z());
570 // find node c in the grid, nearest to the b
572 if (i == stop + 1) { // down bondary reached
573 c = quad->uv_grid[nbhoriz*jlow + 1].node;
576 double mind = RealLast();
577 for (int k = g; k >= jlow; k--) {
578 const SMDS_MeshNode *nk;
582 nk = quad->uv_grid[nbhoriz*k + 1].node;
583 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
584 double dist = pb.Distance(pnk);
585 if (dist < mind - eps) {
595 if (near == g) { // make triangle
596 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
597 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
599 else { // make quadrangle
603 d = quad->uv_grid[nbhoriz*(near + 1) + 1].node;
604 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
605 if(!myTrianglePreference){
606 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
607 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
610 SplitQuad(meshDS, geomFaceID, a, b, c, d);
613 if (near + 1 < g) { // if d not is at g - make additional triangles
614 for (int k = near + 1; k < g; k++) {
615 c = quad->uv_grid[nbhoriz*k + 1].node;
619 d = quad->uv_grid[nbhoriz*(k + 1) + 1].node;
620 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
621 if(face) meshDS->SetMeshElementOnShape(face, geomFaceID);
635 //=============================================================================
639 //=============================================================================
641 bool StdMeshers_Quadrangle_2D::Evaluate(SMESH_Mesh& aMesh,
642 const TopoDS_Shape& aShape,
643 MapShapeNbElems& aResMap)
646 aMesh.GetSubMesh(aShape);
648 std::vector<int> aNbNodes(4);
649 bool IsQuadratic = false;
650 if( !CheckNbEdgesForEvaluate( aMesh, aShape, aResMap, aNbNodes, IsQuadratic ) ) {
651 std::vector<int> aResVec(SMDSEntity_Last);
652 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
653 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
654 aResMap.insert(std::make_pair(sm,aResVec));
655 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
656 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
660 if(myQuadranglePreference) {
661 int n1 = aNbNodes[0];
662 int n2 = aNbNodes[1];
663 int n3 = aNbNodes[2];
664 int n4 = aNbNodes[3];
665 int nfull = n1+n2+n3+n4;
668 if( nfull==ntmp && ( (n1!=n3) || (n2!=n4) ) ) {
669 // special path for using only quandrangle faces
670 return EvaluateQuadPref(aMesh, aShape, aNbNodes, aResMap, IsQuadratic);
675 int nbdown = aNbNodes[0];
676 int nbup = aNbNodes[2];
678 int nbright = aNbNodes[1];
679 int nbleft = aNbNodes[3];
681 int nbhoriz = Min(nbdown, nbup);
682 int nbvertic = Min(nbright, nbleft);
684 int dh = Max(nbdown, nbup) - nbhoriz;
685 int dv = Max(nbright, nbleft) - nbvertic;
692 int nbNodes = (nbhoriz-2)*(nbvertic-2);
693 //int nbFaces3 = dh + dv + kdh*(nbvertic-1)*2 + kdv*(nbhoriz-1)*2;
694 int nbFaces3 = dh + dv;
695 //if( kdh==1 && kdv==1 ) nbFaces3 -= 2;
696 //if( dh>0 && dv>0 ) nbFaces3 -= 2;
697 //int nbFaces4 = (nbhoriz-1-kdh)*(nbvertic-1-kdv);
698 int nbFaces4 = (nbhoriz-1)*(nbvertic-1);
700 std::vector<int> aVec(SMDSEntity_Last);
701 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
703 aVec[SMDSEntity_Quad_Triangle] = nbFaces3;
704 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4;
705 int nbbndedges = nbdown + nbup + nbright + nbleft -4;
706 int nbintedges = ( nbFaces4*4 + nbFaces3*3 - nbbndedges ) / 2;
707 aVec[SMDSEntity_Node] = nbNodes + nbintedges;
708 if( aNbNodes.size()==5 ) {
709 aVec[SMDSEntity_Quad_Triangle] = nbFaces3 + aNbNodes[3] -1;
710 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4 - aNbNodes[3] +1;
714 aVec[SMDSEntity_Node] = nbNodes;
715 aVec[SMDSEntity_Triangle] = nbFaces3;
716 aVec[SMDSEntity_Quadrangle] = nbFaces4;
717 if( aNbNodes.size()==5 ) {
718 aVec[SMDSEntity_Triangle] = nbFaces3 + aNbNodes[3] - 1;
719 aVec[SMDSEntity_Quadrangle] = nbFaces4 - aNbNodes[3] + 1;
722 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
723 aResMap.insert(std::make_pair(sm,aVec));
729 //================================================================================
731 * \brief Return true if only two given edges meat at their common vertex
733 //================================================================================
735 static bool twoEdgesMeatAtVertex(const TopoDS_Edge& e1,
736 const TopoDS_Edge& e2,
740 if ( !TopExp::CommonVertex( e1, e2, v ))
742 TopTools_ListIteratorOfListOfShape ancestIt( mesh.GetAncestors( v ));
743 for ( ; ancestIt.More() ; ancestIt.Next() )
744 if ( ancestIt.Value().ShapeType() == TopAbs_EDGE )
745 if ( !e1.IsSame( ancestIt.Value() ) && !e2.IsSame( ancestIt.Value() ))
750 //=============================================================================
754 //=============================================================================
756 FaceQuadStruct* StdMeshers_Quadrangle_2D::CheckNbEdges(SMESH_Mesh & aMesh,
757 const TopoDS_Shape & aShape)
758 //throw(SALOME_Exception)
760 const TopoDS_Face & F = TopoDS::Face(aShape);
761 const bool ignoreMediumNodes = _quadraticMesh;
763 // verify 1 wire only, with 4 edges
765 list< TopoDS_Edge > edges;
766 list< int > nbEdgesInWire;
767 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
769 error(COMPERR_BAD_SHAPE, TComm("Wrong number of wires: ") << nbWire);
772 FaceQuadStruct* quad = new FaceQuadStruct;
774 quad->side.reserve(nbEdgesInWire.front());
777 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
778 if ( nbEdgesInWire.front() == 3 ) // exactly 3 edges
780 SMESH_Comment comment;
781 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
782 if ( myTriaVertexID == -1)
784 comment << "No Base vertex parameter provided for a trilateral geometrical face";
788 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
790 TopoDS_Edge E1,E2,E3;
791 for(; edgeIt != edges.end(); ++edgeIt) {
792 TopoDS_Edge E = *edgeIt;
793 TopoDS_Vertex VF, VL;
794 TopExp::Vertices(E, VF, VL, true);
797 else if( VL.IsSame(V) )
802 if ( !E1.IsNull() && !E2.IsNull() && !E3.IsNull() )
804 quad->side.push_back( new StdMeshers_FaceSide(F, E1, &aMesh, true, ignoreMediumNodes));
805 quad->side.push_back( new StdMeshers_FaceSide(F, E2, &aMesh, true, ignoreMediumNodes));
806 quad->side.push_back( new StdMeshers_FaceSide(F, E3, &aMesh, false,ignoreMediumNodes));
807 const vector<UVPtStruct>& UVPSleft = quad->side[0]->GetUVPtStruct(true,0);
808 /* vector<UVPtStruct>& UVPStop = */quad->side[1]->GetUVPtStruct(false,1);
809 /* vector<UVPtStruct>& UVPSright = */quad->side[2]->GetUVPtStruct(true,1);
810 const SMDS_MeshNode* aNode = UVPSleft[0].node;
811 gp_Pnt2d aPnt2d( UVPSleft[0].u, UVPSleft[0].v );
812 quad->side.push_back( new StdMeshers_FaceSide(aNode, aPnt2d, quad->side[1]));
816 comment << "Invalid Base vertex parameter: " << myTriaVertexID << " is not among [";
817 TopTools_MapOfShape vMap;
818 for ( TopExp_Explorer v( aShape, TopAbs_VERTEX ); v.More(); v.Next())
819 if ( vMap.Add( v.Current() ))
820 comment << meshDS->ShapeToIndex( v.Current() ) << ( vMap.Extent()==3 ? "]" : ", ");
826 else if ( nbEdgesInWire.front() == 4 ) { // exactly 4 edges
827 for ( ; edgeIt != edges.end(); ++edgeIt, nbSides++ )
828 quad->side.push_back( new StdMeshers_FaceSide(F, *edgeIt, &aMesh,
829 nbSides<TOP_SIDE, ignoreMediumNodes));
831 else if ( nbEdgesInWire.front() > 4 ) { // more than 4 edges - try to unite some
832 list< TopoDS_Edge > sideEdges;
833 while ( !edges.empty()) {
835 sideEdges.splice( sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
836 bool sameSide = true;
837 while ( !edges.empty() && sameSide ) {
838 sameSide = SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() );
840 sideEdges.splice( sideEdges.end(), edges, edges.begin());
842 if ( nbSides == 0 ) { // go backward from the first edge
844 while ( !edges.empty() && sameSide ) {
845 sameSide = SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() );
847 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
850 quad->side.push_back( new StdMeshers_FaceSide(F, sideEdges, &aMesh,
851 nbSides<TOP_SIDE, ignoreMediumNodes));
854 // issue 20222. Try to unite only edges shared by two same faces
856 // delete found sides
857 { FaceQuadStruct cleaner( *quad ); }
859 quad->side.reserve(nbEdgesInWire.front());
862 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
863 while ( !edges.empty()) {
865 sideEdges.splice( sideEdges.end(), edges, edges.begin());
866 bool sameSide = true;
867 while ( !edges.empty() && sameSide ) {
869 SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() ) &&
870 twoEdgesMeatAtVertex( sideEdges.back(), edges.front(), aMesh );
872 sideEdges.splice( sideEdges.end(), edges, edges.begin());
874 if ( nbSides == 0 ) { // go backward from the first edge
876 while ( !edges.empty() && sameSide ) {
878 SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() ) &&
879 twoEdgesMeatAtVertex( sideEdges.front(), edges.back(), aMesh );
881 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
884 quad->side.push_back( new StdMeshers_FaceSide(F, sideEdges, &aMesh,
885 nbSides<TOP_SIDE, ignoreMediumNodes));
892 MESSAGE ( "StdMeshers_Quadrangle_2D. Edge IDs of " << nbSides << " sides:\n" );
893 for ( int i = 0; i < nbSides; ++i ) {
895 for ( int e = 0; e < quad->side[i]->NbEdges(); ++e )
896 MESSAGE ( myTool->GetMeshDS()->ShapeToIndex( quad->side[i]->Edge( e )) << " " );
902 nbSides = nbEdgesInWire.front();
903 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
912 //=============================================================================
916 //=============================================================================
918 bool StdMeshers_Quadrangle_2D::CheckNbEdgesForEvaluate(SMESH_Mesh& aMesh,
919 const TopoDS_Shape & aShape,
920 MapShapeNbElems& aResMap,
921 std::vector<int>& aNbNodes,
925 const TopoDS_Face & F = TopoDS::Face(aShape);
927 // verify 1 wire only, with 4 edges
929 list< TopoDS_Edge > edges;
930 list< int > nbEdgesInWire;
931 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
939 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
940 SMESH_subMesh * sm = aMesh.GetSubMesh( *edgeIt );
941 MapShapeNbElemsItr anIt = aResMap.find(sm);
942 if(anIt==aResMap.end()) {
945 std::vector<int> aVec = (*anIt).second;
946 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
947 if ( nbEdgesInWire.front() == 3 ) { // exactly 3 edges
948 if(myTriaVertexID>0) {
949 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
950 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
952 TopoDS_Edge E1,E2,E3;
953 for(; edgeIt != edges.end(); ++edgeIt) {
954 TopoDS_Edge E = TopoDS::Edge(*edgeIt);
955 TopoDS_Vertex VF, VL;
956 TopExp::Vertices(E, VF, VL, true);
959 else if( VL.IsSame(V) )
964 SMESH_subMesh * sm = aMesh.GetSubMesh(E1);
965 MapShapeNbElemsItr anIt = aResMap.find(sm);
966 if(anIt==aResMap.end()) return false;
967 std::vector<int> aVec = (*anIt).second;
969 aNbNodes[0] = (aVec[SMDSEntity_Node]-1)/2 + 2;
971 aNbNodes[0] = aVec[SMDSEntity_Node] + 2;
972 sm = aMesh.GetSubMesh(E2);
973 anIt = aResMap.find(sm);
974 if(anIt==aResMap.end()) return false;
975 aVec = (*anIt).second;
977 aNbNodes[1] = (aVec[SMDSEntity_Node]-1)/2 + 2;
979 aNbNodes[1] = aVec[SMDSEntity_Node] + 2;
980 sm = aMesh.GetSubMesh(E3);
981 anIt = aResMap.find(sm);
982 if(anIt==aResMap.end()) return false;
983 aVec = (*anIt).second;
985 aNbNodes[2] = (aVec[SMDSEntity_Node]-1)/2 + 2;
987 aNbNodes[2] = aVec[SMDSEntity_Node] + 2;
988 aNbNodes[3] = aNbNodes[1];
994 if ( nbEdgesInWire.front() == 4 ) { // exactly 4 edges
995 for(; edgeIt != edges.end(); edgeIt++) {
996 SMESH_subMesh * sm = aMesh.GetSubMesh( *edgeIt );
997 MapShapeNbElemsItr anIt = aResMap.find(sm);
998 if(anIt==aResMap.end()) {
1001 std::vector<int> aVec = (*anIt).second;
1003 aNbNodes[nbSides] = (aVec[SMDSEntity_Node]-1)/2 + 2;
1005 aNbNodes[nbSides] = aVec[SMDSEntity_Node] + 2;
1009 else if ( nbEdgesInWire.front() > 4 ) { // more than 4 edges - try to unite some
1010 list< TopoDS_Edge > sideEdges;
1011 while ( !edges.empty()) {
1013 sideEdges.splice( sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
1014 bool sameSide = true;
1015 while ( !edges.empty() && sameSide ) {
1016 sameSide = SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() );
1018 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1020 if ( nbSides == 0 ) { // go backward from the first edge
1022 while ( !edges.empty() && sameSide ) {
1023 sameSide = SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() );
1025 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
1028 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1029 aNbNodes[nbSides] = 1;
1030 for(; ite!=sideEdges.end(); ite++) {
1031 SMESH_subMesh * sm = aMesh.GetSubMesh( *ite );
1032 MapShapeNbElemsItr anIt = aResMap.find(sm);
1033 if(anIt==aResMap.end()) {
1036 std::vector<int> aVec = (*anIt).second;
1038 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1040 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1044 // issue 20222. Try to unite only edges shared by two same faces
1047 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
1048 while ( !edges.empty()) {
1050 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1051 bool sameSide = true;
1052 while ( !edges.empty() && sameSide ) {
1054 SMESH_Algo::IsContinuous( sideEdges.back(), edges.front() ) &&
1055 twoEdgesMeatAtVertex( sideEdges.back(), edges.front(), aMesh );
1057 sideEdges.splice( sideEdges.end(), edges, edges.begin());
1059 if ( nbSides == 0 ) { // go backward from the first edge
1061 while ( !edges.empty() && sameSide ) {
1063 SMESH_Algo::IsContinuous( sideEdges.front(), edges.back() ) &&
1064 twoEdgesMeatAtVertex( sideEdges.front(), edges.back(), aMesh );
1066 sideEdges.splice( sideEdges.begin(), edges, --edges.end());
1069 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1070 aNbNodes[nbSides] = 1;
1071 for(; ite!=sideEdges.end(); ite++) {
1072 SMESH_subMesh * sm = aMesh.GetSubMesh( *ite );
1073 MapShapeNbElemsItr anIt = aResMap.find(sm);
1074 if(anIt==aResMap.end()) {
1077 std::vector<int> aVec = (*anIt).second;
1079 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1081 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1089 nbSides = nbEdgesInWire.front();
1090 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
1098 //=============================================================================
1102 //=============================================================================
1104 FaceQuadStruct *StdMeshers_Quadrangle_2D::CheckAnd2Dcompute
1105 (SMESH_Mesh & aMesh,
1106 const TopoDS_Shape & aShape,
1107 const bool CreateQuadratic) //throw(SALOME_Exception)
1109 _quadraticMesh = CreateQuadratic;
1111 FaceQuadStruct *quad = CheckNbEdges(aMesh, aShape);
1115 // set normalized grid on unit square in parametric domain
1116 bool stat = SetNormalizedGrid(aMesh, aShape, quad);
1126 //=============================================================================
1130 //=============================================================================
1132 faceQuadStruct::~faceQuadStruct()
1134 for (int i = 0; i < side.size(); i++) {
1135 if (side[i]) delete side[i];
1137 if (uv_grid) delete [] uv_grid;
1141 inline const vector<UVPtStruct>& GetUVPtStructIn(FaceQuadStruct* quad, int i, int nbSeg)
1143 bool isXConst = ( i == BOTTOM_SIDE || i == TOP_SIDE );
1144 double constValue = ( i == BOTTOM_SIDE || i == LEFT_SIDE ) ? 0 : 1;
1146 quad->isEdgeOut[i] ?
1147 quad->side[i]->SimulateUVPtStruct(nbSeg,isXConst,constValue) :
1148 quad->side[i]->GetUVPtStruct(isXConst,constValue);
1152 //=============================================================================
1156 //=============================================================================
1158 bool StdMeshers_Quadrangle_2D::SetNormalizedGrid (SMESH_Mesh & aMesh,
1159 const TopoDS_Shape& aShape,
1160 FaceQuadStruct* & quad) //throw (SALOME_Exception)
1162 // Algorithme décrit dans "Génération automatique de maillages"
1163 // P.L. GEORGE, MASSON, § 6.4.1 p. 84-85
1164 // traitement dans le domaine paramétrique 2d u,v
1165 // transport - projection sur le carré unité
1167 // MESSAGE("StdMeshers_Quadrangle_2D::SetNormalizedGrid");
1168 // const TopoDS_Face& F = TopoDS::Face(aShape);
1170 // 1 --- find orientation of the 4 edges, by test on extrema
1173 // |<----north-2-------^ a3 -------------> a2
1175 // west-3 east-1 =right | |
1179 // v----south-0--------> a0 -------------> a1
1184 // 3 --- 2D normalized values on unit square [0..1][0..1]
1186 int nbhoriz = Min(quad->side[0]->NbPoints(), quad->side[2]->NbPoints());
1187 int nbvertic = Min(quad->side[1]->NbPoints(), quad->side[3]->NbPoints());
1189 quad->isEdgeOut[0] = (quad->side[0]->NbPoints() > quad->side[2]->NbPoints());
1190 quad->isEdgeOut[1] = (quad->side[1]->NbPoints() > quad->side[3]->NbPoints());
1191 quad->isEdgeOut[2] = (quad->side[2]->NbPoints() > quad->side[0]->NbPoints());
1192 quad->isEdgeOut[3] = (quad->side[3]->NbPoints() > quad->side[1]->NbPoints());
1194 UVPtStruct *uv_grid = quad->uv_grid = new UVPtStruct[nbvertic * nbhoriz];
1196 const vector<UVPtStruct>& uv_e0 = GetUVPtStructIn( quad, 0, nbhoriz - 1 );
1197 const vector<UVPtStruct>& uv_e1 = GetUVPtStructIn( quad, 1, nbvertic - 1 );
1198 const vector<UVPtStruct>& uv_e2 = GetUVPtStructIn( quad, 2, nbhoriz - 1 );
1199 const vector<UVPtStruct>& uv_e3 = GetUVPtStructIn( quad, 3, nbvertic - 1 );
1201 if ( uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty() )
1202 //return error( "Can't find nodes on sides");
1203 return error( COMPERR_BAD_INPUT_MESH );
1205 // nodes Id on "in" edges
1206 if (! quad->isEdgeOut[0]) {
1208 for (int i = 0; i < nbhoriz; i++) { // down
1209 int ij = j * nbhoriz + i;
1210 uv_grid[ij].node = uv_e0[i].node;
1213 if (! quad->isEdgeOut[1]) {
1214 int i = nbhoriz - 1;
1215 for (int j = 0; j < nbvertic; j++) { // right
1216 int ij = j * nbhoriz + i;
1217 uv_grid[ij].node = uv_e1[j].node;
1220 if (! quad->isEdgeOut[2]) {
1221 int j = nbvertic - 1;
1222 for (int i = 0; i < nbhoriz; i++) { // up
1223 int ij = j * nbhoriz + i;
1224 uv_grid[ij].node = uv_e2[i].node;
1227 if (! quad->isEdgeOut[3]) {
1229 for (int j = 0; j < nbvertic; j++) { // left
1230 int ij = j * nbhoriz + i;
1231 uv_grid[ij].node = uv_e3[j].node;
1235 // normalized 2d values on grid
1236 for (int i = 0; i < nbhoriz; i++) {
1237 for (int j = 0; j < nbvertic; j++) {
1238 int ij = j * nbhoriz + i;
1239 // --- droite i cste : x = x0 + y(x1-x0)
1240 double x0 = uv_e0[i].normParam; // bas - sud
1241 double x1 = uv_e2[i].normParam; // haut - nord
1242 // --- droite j cste : y = y0 + x(y1-y0)
1243 double y0 = uv_e3[j].normParam; // gauche-ouest
1244 double y1 = uv_e1[j].normParam; // droite - est
1245 // --- intersection : x=x0+(y0+x(y1-y0))(x1-x0)
1246 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1247 double y = y0 + x * (y1 - y0);
1250 //MESSAGE("-xy-01 "<<x0<<" "<<x1<<" "<<y0<<" "<<y1);
1251 //MESSAGE("-xy-norm "<<i<<" "<<j<<" "<<x<<" "<<y);
1255 // 4 --- projection on 2d domain (u,v)
1256 gp_UV a0( uv_e0.front().u, uv_e0.front().v );
1257 gp_UV a1( uv_e0.back().u, uv_e0.back().v );
1258 gp_UV a2( uv_e2.back().u, uv_e2.back().v );
1259 gp_UV a3( uv_e2.front().u, uv_e2.front().v );
1261 for (int i = 0; i < nbhoriz; i++) {
1262 for (int j = 0; j < nbvertic; j++) {
1263 int ij = j * nbhoriz + i;
1264 double x = uv_grid[ij].x;
1265 double y = uv_grid[ij].y;
1266 double param_0 = uv_e0[0].normParam + x * (uv_e0.back().normParam - uv_e0[0].normParam); // sud
1267 double param_2 = uv_e2[0].normParam + x * (uv_e2.back().normParam - uv_e2[0].normParam); // nord
1268 double param_1 = uv_e1[0].normParam + y * (uv_e1.back().normParam - uv_e1[0].normParam); // est
1269 double param_3 = uv_e3[0].normParam + y * (uv_e3.back().normParam - uv_e3[0].normParam); // ouest
1271 //MESSAGE("params "<<param_0<<" "<<param_1<<" "<<param_2<<" "<<param_3);
1272 gp_UV p0 = quad->side[0]->Value2d(param_0).XY();
1273 gp_UV p1 = quad->side[1]->Value2d(param_1).XY();
1274 gp_UV p2 = quad->side[2]->Value2d(param_2).XY();
1275 gp_UV p3 = quad->side[3]->Value2d(param_3).XY();
1277 gp_UV uv = (1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3;
1278 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1280 uv_grid[ij].u = uv.X();
1281 uv_grid[ij].v = uv.Y();
1287 //=======================================================================
1288 //function : ShiftQuad
1289 //purpose : auxilary function for ComputeQuadPref
1290 //=======================================================================
1292 static void ShiftQuad(FaceQuadStruct* quad, const int num, bool)
1294 StdMeshers_FaceSide* side[4] = { quad->side[0], quad->side[1], quad->side[2], quad->side[3] };
1295 for (int i = BOTTOM_SIDE; i < NB_SIDES; ++i ) {
1296 int id = ( i + num ) % NB_SIDES;
1297 bool wasForward = ( i < TOP_SIDE );
1298 bool newForward = ( id < TOP_SIDE );
1299 if ( wasForward != newForward )
1300 side[ i ]->Reverse();
1301 quad->side[ id ] = side[ i ];
1305 //=======================================================================
1307 //purpose : auxilary function for ComputeQuadPref
1308 //=======================================================================
1310 static gp_UV CalcUV(double x0, double x1, double y0, double y1,
1311 FaceQuadStruct* quad,
1312 const gp_UV& a0, const gp_UV& a1,
1313 const gp_UV& a2, const gp_UV& a3)
1315 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1316 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1317 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1318 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1320 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1321 double y = y0 + x * (y1 - y0);
1323 double param_b = uv_eb[0].normParam + x * (uv_eb.back().normParam - uv_eb[0].normParam);
1324 double param_t = uv_et[0].normParam + x * (uv_et.back().normParam - uv_et[0].normParam);
1325 double param_r = uv_er[0].normParam + y * (uv_er.back().normParam - uv_er[0].normParam);
1326 double param_l = uv_el[0].normParam + y * (uv_el.back().normParam - uv_el[0].normParam);
1328 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(param_b).XY();
1329 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(param_r).XY();
1330 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(param_t).XY();
1331 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(param_l).XY();
1333 gp_UV uv = p0 * (1 - y) + p1 * x + p2 * y + p3 * (1 - x);
1335 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1340 //=======================================================================
1341 //function : CalcUV2
1342 //purpose : auxilary function for ComputeQuadPref
1343 //=======================================================================
1345 static gp_UV CalcUV2(double x, double y,
1346 FaceQuadStruct* quad,
1347 const gp_UV& a0, const gp_UV& a1,
1348 const gp_UV& a2, const gp_UV& a3)
1350 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1351 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1352 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1353 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1355 //double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1356 //double y = y0 + x * (y1 - y0);
1358 double param_b = uv_eb[0].normParam + x * (uv_eb.back().normParam - uv_eb[0].normParam);
1359 double param_t = uv_et[0].normParam + x * (uv_et.back().normParam - uv_et[0].normParam);
1360 double param_r = uv_er[0].normParam + y * (uv_er.back().normParam - uv_er[0].normParam);
1361 double param_l = uv_el[0].normParam + y * (uv_el.back().normParam - uv_el[0].normParam);
1363 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(param_b).XY();
1364 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(param_r).XY();
1365 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(param_t).XY();
1366 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(param_l).XY();
1368 gp_UV uv = p0 * (1 - y) + p1 * x + p2 * y + p3 * (1 - x);
1370 uv -= (1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3;
1376 //=======================================================================
1378 * Create only quandrangle faces
1380 //=======================================================================
1382 bool StdMeshers_Quadrangle_2D::ComputeQuadPref (SMESH_Mesh & aMesh,
1383 const TopoDS_Shape& aShape,
1384 FaceQuadStruct* quad)
1386 // Auxilary key in order to keep old variant
1387 // of meshing after implementation new variant
1388 // for bug 0016220 from Mantis.
1389 bool OldVersion = false;
1391 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
1392 const TopoDS_Face& F = TopoDS::Face(aShape);
1393 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1394 // const TopoDS_Wire& W = BRepTools::OuterWire(F);
1396 // if(W.Orientation()==TopAbs_FORWARD)
1398 //if(WisF) cout<<"W is FORWARD"<<endl;
1399 //else cout<<"W is REVERSED"<<endl;
1400 // bool FisF = (F.Orientation()==TopAbs_FORWARD);
1401 // if(!FisF) WisF = !WisF;
1403 int i,j,geomFaceID = meshDS->ShapeToIndex( F );
1405 int nb = quad->side[0]->NbPoints();
1406 int nr = quad->side[1]->NbPoints();
1407 int nt = quad->side[2]->NbPoints();
1408 int nl = quad->side[3]->NbPoints();
1409 int dh = abs(nb-nt);
1410 int dv = abs(nr-nl);
1414 // it is a base case => not shift quad but me be replacement is need
1415 ShiftQuad(quad,0,WisF);
1418 // we have to shift quad on 2
1419 ShiftQuad(quad,2,WisF);
1424 // we have to shift quad on 1
1425 ShiftQuad(quad,1,WisF);
1428 // we have to shift quad on 3
1429 ShiftQuad(quad,3,WisF);
1433 nb = quad->side[0]->NbPoints();
1434 nr = quad->side[1]->NbPoints();
1435 nt = quad->side[2]->NbPoints();
1436 nl = quad->side[3]->NbPoints();
1439 int nbh = Max(nb,nt);
1440 int nbv = Max(nr,nl);
1444 // ----------- Old version ---------------
1445 // orientation of face and 3 main domain for future faces
1451 // left | | | | rigth
1458 // ----------- New version ---------------
1459 // orientation of face and 3 main domain for future faces
1465 // left |/________\| rigth
1481 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0 );
1482 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1483 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1 );
1484 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1486 if ( uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl )
1487 return error( COMPERR_BAD_INPUT_MESH );
1489 // arrays for normalized params
1490 //cout<<"Dump B:"<<endl;
1491 TColStd_SequenceOfReal npb, npr, npt, npl;
1492 for(i=0; i<nb; i++) {
1493 npb.Append(uv_eb[i].normParam);
1494 //cout<<"i="<<i<<" par="<<uv_eb[i].normParam<<" npar="<<uv_eb[i].normParam;
1495 //const SMDS_MeshNode* N = uv_eb[i].node;
1496 //cout<<" node("<<N->X()<<","<<N->Y()<<","<<N->Z()<<")"<<endl;
1498 for(i=0; i<nr; i++) {
1499 npr.Append(uv_er[i].normParam);
1501 for(i=0; i<nt; i++) {
1502 npt.Append(uv_et[i].normParam);
1504 for(i=0; i<nl; i++) {
1505 npl.Append(uv_el[i].normParam);
1510 // add some params to right and left after the first param
1513 double dpr = (npr.Value(2) - npr.Value(1))/(dr+1);
1514 for(i=1; i<=dr; i++) {
1515 npr.InsertAfter(1,npr.Value(2)-dpr);
1519 dpr = (npl.Value(2) - npl.Value(1))/(dl+1);
1520 for(i=1; i<=dl; i++) {
1521 npl.InsertAfter(1,npl.Value(2)-dpr);
1525 //for(i=1; i<=npb.Length(); i++) {
1526 // cout<<" "<<npb.Value(i);
1530 gp_XY a0( uv_eb.front().u, uv_eb.front().v );
1531 gp_XY a1( uv_eb.back().u, uv_eb.back().v );
1532 gp_XY a2( uv_et.back().u, uv_et.back().v );
1533 gp_XY a3( uv_et.front().u, uv_et.front().v );
1534 //cout<<" a0("<<a0.X()<<","<<a0.Y()<<")"<<" a1("<<a1.X()<<","<<a1.Y()<<")"
1535 // <<" a2("<<a2.X()<<","<<a2.Y()<<")"<<" a3("<<a3.X()<<","<<a3.Y()<<")"<<endl;
1537 int nnn = Min(nr,nl);
1538 // auxilary sequence of XY for creation nodes
1539 // in the bottom part of central domain
1540 // it's length must be == nbv-nnn-1
1541 TColgp_SequenceOfXY UVL;
1542 TColgp_SequenceOfXY UVR;
1545 // step1: create faces for left domain
1546 StdMeshers_Array2OfNode NodesL(1,dl+1,1,nl);
1548 for(j=1; j<=nl; j++)
1549 NodesL.SetValue(1,j,uv_el[j-1].node);
1552 for(i=1; i<=dl; i++)
1553 NodesL.SetValue(i+1,nl,uv_et[i].node);
1554 // create and add needed nodes
1555 TColgp_SequenceOfXY UVtmp;
1556 for(i=1; i<=dl; i++) {
1557 double x0 = npt.Value(i+1);
1560 double y0 = npl.Value(i+1);
1561 double y1 = npr.Value(i+1);
1562 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1563 gp_Pnt P = S->Value(UV.X(),UV.Y());
1564 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1565 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1566 NodesL.SetValue(i+1,1,N);
1567 if(UVL.Length()<nbv-nnn-1) UVL.Append(UV);
1569 for(j=2; j<nl; j++) {
1570 double y0 = npl.Value(dl+j);
1571 double y1 = npr.Value(dl+j);
1572 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1573 gp_Pnt P = S->Value(UV.X(),UV.Y());
1574 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1575 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1576 NodesL.SetValue(i+1,j,N);
1577 if( i==dl ) UVtmp.Append(UV);
1580 for(i=1; i<=UVtmp.Length() && UVL.Length()<nbv-nnn-1; i++) {
1581 UVL.Append(UVtmp.Value(i));
1583 //cout<<"Dump NodesL:"<<endl;
1584 //for(i=1; i<=dl+1; i++) {
1586 // for(j=1; j<=nl; j++) {
1587 // cout<<" ("<<NodesL.Value(i,j)->X()<<","<<NodesL.Value(i,j)->Y()<<","<<NodesL.Value(i,j)->Z()<<")";
1592 for(i=1; i<=dl; i++) {
1593 for(j=1; j<nl; j++) {
1596 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i+1,j),
1597 NodesL.Value(i+1,j+1), NodesL.Value(i,j+1));
1598 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1602 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i,j+1),
1603 NodesL.Value(i+1,j+1), NodesL.Value(i+1,j));
1604 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1610 // fill UVL using c2d
1611 for(i=1; i<npl.Length() && UVL.Length()<nbv-nnn-1; i++) {
1612 UVL.Append( gp_UV ( uv_el[i].u, uv_el[i].v ));
1616 // step2: create faces for right domain
1617 StdMeshers_Array2OfNode NodesR(1,dr+1,1,nr);
1619 for(j=1; j<=nr; j++)
1620 NodesR.SetValue(1,j,uv_er[nr-j].node);
1623 for(i=1; i<=dr; i++)
1624 NodesR.SetValue(i+1,1,uv_et[nt-1-i].node);
1625 // create and add needed nodes
1626 TColgp_SequenceOfXY UVtmp;
1627 for(i=1; i<=dr; i++) {
1628 double x0 = npt.Value(nt-i);
1631 double y0 = npl.Value(i+1);
1632 double y1 = npr.Value(i+1);
1633 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1634 gp_Pnt P = S->Value(UV.X(),UV.Y());
1635 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1636 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1637 NodesR.SetValue(i+1,nr,N);
1638 if(UVR.Length()<nbv-nnn-1) UVR.Append(UV);
1640 for(j=2; j<nr; j++) {
1641 double y0 = npl.Value(nbv-j+1);
1642 double y1 = npr.Value(nbv-j+1);
1643 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1644 gp_Pnt P = S->Value(UV.X(),UV.Y());
1645 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1646 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1647 NodesR.SetValue(i+1,j,N);
1648 if( i==dr ) UVtmp.Prepend(UV);
1651 for(i=1; i<=UVtmp.Length() && UVR.Length()<nbv-nnn-1; i++) {
1652 UVR.Append(UVtmp.Value(i));
1655 for(i=1; i<=dr; i++) {
1656 for(j=1; j<nr; j++) {
1659 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i+1,j),
1660 NodesR.Value(i+1,j+1), NodesR.Value(i,j+1));
1661 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1665 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i,j+1),
1666 NodesR.Value(i+1,j+1), NodesR.Value(i+1,j));
1667 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1673 // fill UVR using c2d
1674 for(i=1; i<npr.Length() && UVR.Length()<nbv-nnn-1; i++) {
1675 UVR.Append( gp_UV( uv_er[i].u, uv_er[i].v ));
1679 // step3: create faces for central domain
1680 StdMeshers_Array2OfNode NodesC(1,nb,1,nbv);
1681 // add first string using NodesL
1682 for(i=1; i<=dl+1; i++)
1683 NodesC.SetValue(1,i,NodesL(i,1));
1684 for(i=2; i<=nl; i++)
1685 NodesC.SetValue(1,dl+i,NodesL(dl+1,i));
1686 // add last string using NodesR
1687 for(i=1; i<=dr+1; i++)
1688 NodesC.SetValue(nb,i,NodesR(i,nr));
1690 NodesC.SetValue(nb,dr+i+1,NodesR(dr+1,nr-i));
1691 // add top nodes (last columns)
1692 for(i=dl+2; i<nbh-dr; i++)
1693 NodesC.SetValue(i-dl,nbv,uv_et[i-1].node);
1694 // add bottom nodes (first columns)
1696 NodesC.SetValue(i,1,uv_eb[i-1].node);
1698 // create and add needed nodes
1699 // add linear layers
1700 for(i=2; i<nb; i++) {
1701 double x0 = npt.Value(dl+i);
1703 for(j=1; j<nnn; j++) {
1704 double y0 = npl.Value(nbv-nnn+j);
1705 double y1 = npr.Value(nbv-nnn+j);
1706 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1707 gp_Pnt P = S->Value(UV.X(),UV.Y());
1708 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1709 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1710 NodesC.SetValue(i,nbv-nnn+j,N);
1713 // add diagonal layers
1714 //cout<<"UVL.Length()="<<UVL.Length()<<" UVR.Length()="<<UVR.Length()<<endl;
1715 //cout<<"Dump UVL:"<<endl;
1716 //for(i=1; i<=UVL.Length(); i++) {
1717 // cout<<" ("<<UVL.Value(i).X()<<","<<UVL.Value(i).Y()<<")";
1720 for(i=1; i<nbv-nnn; i++) {
1721 double du = UVR.Value(i).X() - UVL.Value(i).X();
1722 double dv = UVR.Value(i).Y() - UVL.Value(i).Y();
1723 for(j=2; j<nb; j++) {
1724 double u = UVL.Value(i).X() + du*npb.Value(j);
1725 double v = UVL.Value(i).Y() + dv*npb.Value(j);
1726 gp_Pnt P = S->Value(u,v);
1727 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1728 meshDS->SetNodeOnFace(N, geomFaceID, u, v);
1729 NodesC.SetValue(j,i+1,N);
1733 for(i=1; i<nb; i++) {
1734 for(j=1; j<nbv; j++) {
1737 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1738 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1739 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1743 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1744 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1745 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1751 else { // New version (!OldVersion)
1752 // step1: create faces for bottom rectangle domain
1753 StdMeshers_Array2OfNode NodesBRD(1,nb,1,nnn-1);
1754 // fill UVL and UVR using c2d
1755 for(j=0; j<nb; j++) {
1756 NodesBRD.SetValue(j+1,1,uv_eb[j].node);
1758 for(i=1; i<nnn-1; i++) {
1759 NodesBRD.SetValue(1,i+1,uv_el[i].node);
1760 NodesBRD.SetValue(nb,i+1,uv_er[i].node);
1761 double du = uv_er[i].u - uv_el[i].u;
1762 double dv = uv_er[i].v - uv_el[i].v;
1763 for(j=2; j<nb; j++) {
1764 double u = uv_el[i].u + du*npb.Value(j);
1765 double v = uv_el[i].v + dv*npb.Value(j);
1766 gp_Pnt P = S->Value(u,v);
1767 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1768 meshDS->SetNodeOnFace(N, geomFaceID, u, v);
1769 NodesBRD.SetValue(j,i+1,N);
1774 for(j=1; j<nnn-1; j++) {
1775 for(i=1; i<nb; i++) {
1779 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i+1,j),
1780 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i,j+1));
1781 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1785 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i,j+1),
1786 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i+1,j));
1787 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1791 int drl = abs(nr-nl);
1792 // create faces for region C
1793 StdMeshers_Array2OfNode NodesC(1,nb,1,drl+1+addv);
1794 // add nodes from previous region
1795 for(j=1; j<=nb; j++) {
1796 NodesC.SetValue(j,1,NodesBRD.Value(j,nnn-1));
1798 if( (drl+addv) > 0 ) {
1803 TColgp_SequenceOfXY UVtmp;
1804 double drparam = npr.Value(nr) - npr.Value(nnn-1);
1805 double dlparam = npl.Value(nnn) - npl.Value(nnn-1);
1807 for(i=1; i<=drl; i++) {
1808 // add existed nodes from right edge
1809 NodesC.SetValue(nb,i+1,uv_er[nnn+i-2].node);
1810 //double dtparam = npt.Value(i+1);
1811 y1 = npr.Value(nnn+i-1); // param on right edge
1812 double dpar = (y1 - npr.Value(nnn-1))/drparam;
1813 y0 = npl.Value(nnn-1) + dpar*dlparam; // param on left edge
1814 double dy = y1 - y0;
1815 for(j=1; j<nb; j++) {
1816 double x = npt.Value(i+1) + npb.Value(j)*(1-npt.Value(i+1));
1817 double y = y0 + dy*x;
1818 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1819 gp_Pnt P = S->Value(UV.X(),UV.Y());
1820 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1821 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1822 NodesC.SetValue(j,i+1,N);
1825 double dy0 = (1-y0)/(addv+1);
1826 double dy1 = (1-y1)/(addv+1);
1827 for(i=1; i<=addv; i++) {
1828 double yy0 = y0 + dy0*i;
1829 double yy1 = y1 + dy1*i;
1830 double dyy = yy1 - yy0;
1831 for(j=1; j<=nb; j++) {
1832 double x = npt.Value(i+1+drl) +
1833 npb.Value(j) * ( npt.Value(nt-i) - npt.Value(i+1+drl) );
1834 double y = yy0 + dyy*x;
1835 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1836 gp_Pnt P = S->Value(UV.X(),UV.Y());
1837 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1838 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1839 NodesC.SetValue(j,i+drl+1,N);
1846 TColgp_SequenceOfXY UVtmp;
1847 double dlparam = npl.Value(nl) - npl.Value(nnn-1);
1848 double drparam = npr.Value(nnn) - npr.Value(nnn-1);
1849 double y0 = npl.Value(nnn-1);
1850 double y1 = npr.Value(nnn-1);
1851 for(i=1; i<=drl; i++) {
1852 // add existed nodes from right edge
1853 NodesC.SetValue(1,i+1,uv_el[nnn+i-2].node);
1854 y0 = npl.Value(nnn+i-1); // param on left edge
1855 double dpar = (y0 - npl.Value(nnn-1))/dlparam;
1856 y1 = npr.Value(nnn-1) + dpar*drparam; // param on right edge
1857 double dy = y1 - y0;
1858 for(j=2; j<=nb; j++) {
1859 double x = npb.Value(j)*npt.Value(nt-i);
1860 double y = y0 + dy*x;
1861 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1862 gp_Pnt P = S->Value(UV.X(),UV.Y());
1863 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1864 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1865 NodesC.SetValue(j,i+1,N);
1868 double dy0 = (1-y0)/(addv+1);
1869 double dy1 = (1-y1)/(addv+1);
1870 for(i=1; i<=addv; i++) {
1871 double yy0 = y0 + dy0*i;
1872 double yy1 = y1 + dy1*i;
1873 double dyy = yy1 - yy0;
1874 for(j=1; j<=nb; j++) {
1875 double x = npt.Value(i+1) +
1876 npb.Value(j) * ( npt.Value(nt-i-drl) - npt.Value(i+1) );
1877 double y = yy0 + dyy*x;
1878 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1879 gp_Pnt P = S->Value(UV.X(),UV.Y());
1880 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1881 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1882 NodesC.SetValue(j,i+drl+1,N);
1887 for(j=1; j<=drl+addv; j++) {
1888 for(i=1; i<nb; i++) {
1892 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1893 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1894 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1898 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1899 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1900 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1905 StdMeshers_Array2OfNode NodesLast(1,nt,1,2);
1906 for(i=1; i<=nt; i++) {
1907 NodesLast.SetValue(i,2,uv_et[i-1].node);
1910 for(i=n1; i<drl+addv+1; i++) {
1912 NodesLast.SetValue(nnn,1,NodesC.Value(1,i));
1914 for(i=1; i<=nb; i++) {
1916 NodesLast.SetValue(nnn,1,NodesC.Value(i,drl+addv+1));
1918 for(i=drl+addv; i>=n2; i--) {
1920 NodesLast.SetValue(nnn,1,NodesC.Value(nb,i));
1922 for(i=1; i<nt; i++) {
1926 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i+1,1),
1927 NodesLast.Value(i+1,2), NodesLast.Value(i,2));
1928 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1932 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i,2),
1933 NodesLast.Value(i+1,2), NodesLast.Value(i+1,2));
1934 if(F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1937 } // if( (drl+addv) > 0 )
1939 } // end new version implementation
1946 //=======================================================================
1948 * Evaluate only quandrangle faces
1950 //=======================================================================
1952 bool StdMeshers_Quadrangle_2D::EvaluateQuadPref(SMESH_Mesh & aMesh,
1953 const TopoDS_Shape& aShape,
1954 std::vector<int>& aNbNodes,
1955 MapShapeNbElems& aResMap,
1958 // Auxilary key in order to keep old variant
1959 // of meshing after implementation new variant
1960 // for bug 0016220 from Mantis.
1961 bool OldVersion = false;
1963 const TopoDS_Face& F = TopoDS::Face(aShape);
1964 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1966 int nb = aNbNodes[0];
1967 int nr = aNbNodes[1];
1968 int nt = aNbNodes[2];
1969 int nl = aNbNodes[3];
1970 int dh = abs(nb-nt);
1971 int dv = abs(nr-nl);
1975 // it is a base case => not shift
1978 // we have to shift on 2
1987 // we have to shift quad on 1
1994 // we have to shift quad on 3
2004 int nbh = Max(nb,nt);
2005 int nbv = Max(nr,nl);
2020 // add some params to right and left after the first param
2027 int nnn = Min(nr,nl);
2032 // step1: create faces for left domain
2034 nbNodes += dl*(nl-1);
2035 nbFaces += dl*(nl-1);
2037 // step2: create faces for right domain
2039 nbNodes += dr*(nr-1);
2040 nbFaces += dr*(nr-1);
2042 // step3: create faces for central domain
2043 nbNodes += (nb-2)*(nnn-1) + (nbv-nnn-1)*(nb-2);
2044 nbFaces += (nb-1)*(nbv-1);
2046 else { // New version (!OldVersion)
2047 nbNodes += (nnn-2)*(nb-2);
2048 nbFaces += (nnn-2)*(nb-1);
2049 int drl = abs(nr-nl);
2050 nbNodes += drl*(nb-1) + addv*nb;
2051 nbFaces += (drl+addv)*(nb-1) + (nt-1);
2052 } // end new version implementation
2054 std::vector<int> aVec(SMDSEntity_Last);
2055 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
2057 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces;
2058 aVec[SMDSEntity_Node] = nbNodes + nbFaces*4;
2059 if( aNbNodes.size()==5 ) {
2060 aVec[SMDSEntity_Quad_Triangle] = aNbNodes[3] - 1;
2061 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2065 aVec[SMDSEntity_Node] = nbNodes;
2066 aVec[SMDSEntity_Quadrangle] = nbFaces;
2067 if( aNbNodes.size()==5 ) {
2068 aVec[SMDSEntity_Triangle] = aNbNodes[3] - 1;
2069 aVec[SMDSEntity_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2072 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
2073 aResMap.insert(std::make_pair(sm,aVec));
2079 //=============================================================================
2080 /*! Split quadrangle in to 2 triangles by smallest diagonal
2083 //=============================================================================
2084 void StdMeshers_Quadrangle_2D::SplitQuad(SMESHDS_Mesh *theMeshDS,
2086 const SMDS_MeshNode* theNode1,
2087 const SMDS_MeshNode* theNode2,
2088 const SMDS_MeshNode* theNode3,
2089 const SMDS_MeshNode* theNode4)
2091 gp_Pnt a(theNode1->X(),theNode1->Y(),theNode1->Z());
2092 gp_Pnt b(theNode2->X(),theNode2->Y(),theNode2->Z());
2093 gp_Pnt c(theNode3->X(),theNode3->Y(),theNode3->Z());
2094 gp_Pnt d(theNode4->X(),theNode4->Y(),theNode4->Z());
2095 SMDS_MeshFace* face;
2096 if(a.Distance(c) > b.Distance(d)){
2097 face = myTool->AddFace(theNode2, theNode4 , theNode1);
2098 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2099 face = myTool->AddFace(theNode2, theNode3, theNode4);
2100 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2104 face = myTool->AddFace(theNode1, theNode2 ,theNode3);
2105 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );
2106 face = myTool->AddFace(theNode1, theNode3, theNode4);
2107 if(face) theMeshDS->SetMeshElementOnShape(face, theFaceID );