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
22 // File : StdMeshers_Quadrangle_2D.cxx
23 // Author : Paul RASCLE, EDF
26 #include "StdMeshers_Quadrangle_2D.hxx"
28 #include "StdMeshers_FaceSide.hxx"
30 #include "StdMeshers_QuadrangleParams.hxx"
32 #include "SMESH_Gen.hxx"
33 #include "SMESH_Mesh.hxx"
34 #include "SMESH_subMesh.hxx"
35 #include "SMESH_MesherHelper.hxx"
36 #include "SMESH_Block.hxx"
37 #include "SMESH_Comment.hxx"
39 #include "SMDS_MeshElement.hxx"
40 #include "SMDS_MeshNode.hxx"
41 #include "SMDS_EdgePosition.hxx"
42 #include "SMDS_FacePosition.hxx"
44 #include <BRep_Tool.hxx>
45 #include <Geom_Surface.hxx>
46 #include <NCollection_DefineArray2.hxx>
47 #include <Precision.hxx>
48 #include <TColStd_SequenceOfReal.hxx>
49 #include <TColStd_SequenceOfInteger.hxx>
50 #include <TColgp_SequenceOfXY.hxx>
52 #include <TopExp_Explorer.hxx>
53 #include <TopTools_ListIteratorOfListOfShape.hxx>
54 #include <TopTools_MapOfShape.hxx>
57 #include "utilities.h"
58 #include "Utils_ExceptHandlers.hxx"
60 #ifndef StdMeshers_Array2OfNode_HeaderFile
61 #define StdMeshers_Array2OfNode_HeaderFile
62 typedef const SMDS_MeshNode* SMDS_MeshNodePtr;
63 DEFINE_BASECOLLECTION (StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
64 DEFINE_ARRAY2(StdMeshers_Array2OfNode,
65 StdMeshers_BaseCollectionNodePtr, SMDS_MeshNodePtr)
71 typedef SMESH_Comment TComm;
73 //=============================================================================
77 //=============================================================================
79 StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D (int hypId, int studyId,
81 : SMESH_2D_Algo(hypId, studyId, gen)
83 MESSAGE("StdMeshers_Quadrangle_2D::StdMeshers_Quadrangle_2D");
84 _name = "Quadrangle_2D";
85 _shapeType = (1 << TopAbs_FACE);
86 _compatibleHypothesis.push_back("QuadrangleParams");
87 _compatibleHypothesis.push_back("QuadranglePreference");
88 _compatibleHypothesis.push_back("TrianglePreference");
92 //=============================================================================
96 //=============================================================================
98 StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D()
100 MESSAGE("StdMeshers_Quadrangle_2D::~StdMeshers_Quadrangle_2D");
103 //=============================================================================
107 //=============================================================================
109 bool StdMeshers_Quadrangle_2D::CheckHypothesis
111 const TopoDS_Shape& aShape,
112 SMESH_Hypothesis::Hypothesis_Status& aStatus)
115 aStatus = SMESH_Hypothesis::HYP_OK;
117 const list <const SMESHDS_Hypothesis * >& hyps =
118 GetUsedHypothesis(aMesh, aShape, false);
119 const SMESHDS_Hypothesis * aHyp = 0;
122 myQuadType = QUAD_STANDARD;
123 myQuadranglePreference = false;
124 myTrianglePreference = false;
126 bool isFirstParams = true;
128 // First assigned hypothesis (if any) is processed now
129 if (hyps.size() > 0) {
131 if (strcmp("QuadrangleParams", aHyp->GetName()) == 0) {
132 const StdMeshers_QuadrangleParams* aHyp1 =
133 (const StdMeshers_QuadrangleParams*)aHyp;
134 myTriaVertexID = aHyp1->GetTriaVertex();
135 myQuadType = aHyp1->GetQuadType();
136 if (myQuadType == QUAD_QUADRANGLE_PREF ||
137 myQuadType == QUAD_QUADRANGLE_PREF_REVERSED)
138 myQuadranglePreference = true;
139 else if (myQuadType == QUAD_TRIANGLE_PREF)
140 myTrianglePreference = true;
142 else if (strcmp("QuadranglePreference", aHyp->GetName()) == 0) {
143 isFirstParams = false;
144 myQuadranglePreference = true;
146 else if (strcmp("TrianglePreference", aHyp->GetName()) == 0){
147 isFirstParams = false;
148 myTrianglePreference = true;
151 isFirstParams = false;
155 // Second(last) assigned hypothesis (if any) is processed now
156 if (hyps.size() > 1) {
159 if (strcmp("QuadranglePreference", aHyp->GetName()) == 0) {
160 myQuadranglePreference = true;
161 myTrianglePreference = false;
162 myQuadType = QUAD_STANDARD;
164 else if (strcmp("TrianglePreference", aHyp->GetName()) == 0){
165 myQuadranglePreference = false;
166 myTrianglePreference = true;
167 myQuadType = QUAD_STANDARD;
171 const StdMeshers_QuadrangleParams* aHyp2 =
172 (const StdMeshers_QuadrangleParams*)aHyp;
173 myTriaVertexID = aHyp2->GetTriaVertex();
175 if (!myQuadranglePreference && !myTrianglePreference) { // priority of hypos
176 myQuadType = aHyp2->GetQuadType();
177 if (myQuadType == QUAD_QUADRANGLE_PREF ||
178 myQuadType == QUAD_QUADRANGLE_PREF_REVERSED)
179 myQuadranglePreference = true;
180 else if (myQuadType == QUAD_TRIANGLE_PREF)
181 myTrianglePreference = true;
189 //=============================================================================
193 //=============================================================================
195 bool StdMeshers_Quadrangle_2D::Compute (SMESH_Mesh& aMesh,
196 const TopoDS_Shape& aShape)// throw (SALOME_Exception)
198 // PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
199 //Unexpect aCatchSalomeException);
201 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
202 aMesh.GetSubMesh(aShape);
204 SMESH_MesherHelper helper (aMesh);
207 _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
209 FaceQuadStruct *quad = CheckNbEdges(aMesh, aShape);
210 std::auto_ptr<FaceQuadStruct> quadDeleter (quad); // to delete quad at exit from Compute()
214 if (myQuadranglePreference) {
215 int n1 = quad->side[0]->NbPoints();
216 int n2 = quad->side[1]->NbPoints();
217 int n3 = quad->side[2]->NbPoints();
218 int n4 = quad->side[3]->NbPoints();
219 int nfull = n1+n2+n3+n4;
222 if (nfull == ntmp && ((n1 != n3) || (n2 != n4))) {
223 // special path for using only quandrangle faces
224 bool ok = ComputeQuadPref(aMesh, aShape, quad);
228 else if (myQuadType == QUAD_REDUCED) {
229 int n1 = quad->side[0]->NbPoints();
230 int n2 = quad->side[1]->NbPoints();
231 int n3 = quad->side[2]->NbPoints();
232 int n4 = quad->side[3]->NbPoints();
235 int n13tmp = n13/2; n13tmp = n13tmp*2;
236 int n24tmp = n24/2; n24tmp = n24tmp*2;
237 if ((n1 == n3 && n2 != n4 && n24tmp == n24) ||
238 (n2 == n4 && n1 != n3 && n13tmp == n13)) {
239 bool ok = ComputeReduced(aMesh, aShape, quad);
244 // set normalized grid on unit square in parametric domain
246 if (!SetNormalizedGrid(aMesh, aShape, quad))
249 // --- compute 3D values on points, store points & quadrangles
251 int nbdown = quad->side[0]->NbPoints();
252 int nbup = quad->side[2]->NbPoints();
254 int nbright = quad->side[1]->NbPoints();
255 int nbleft = quad->side[3]->NbPoints();
257 int nbhoriz = Min(nbdown, nbup);
258 int nbvertic = Min(nbright, nbleft);
260 const TopoDS_Face& F = TopoDS::Face(aShape);
261 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
263 // internal mesh nodes
264 int i, j, geomFaceID = meshDS->ShapeToIndex(F);
265 for (i = 1; i < nbhoriz - 1; i++) {
266 for (j = 1; j < nbvertic - 1; j++) {
267 int ij = j * nbhoriz + i;
268 double u = quad->uv_grid[ij].u;
269 double v = quad->uv_grid[ij].v;
270 gp_Pnt P = S->Value(u, v);
271 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
272 meshDS->SetNodeOnFace(node, geomFaceID, u, v);
273 quad->uv_grid[ij].node = node;
280 // --.--.--.--.--.-- nbvertic
286 // ---.----.----.--- 0
287 // 0 > > > > > > > > nbhoriz
293 int iup = nbhoriz - 1;
294 if (quad->isEdgeOut[3]) { ilow++; } else { if (quad->isEdgeOut[1]) iup--; }
297 int jup = nbvertic - 1;
298 if (quad->isEdgeOut[0]) { jlow++; } else { if (quad->isEdgeOut[2]) jup--; }
300 // regular quadrangles
301 for (i = ilow; i < iup; i++) {
302 for (j = jlow; j < jup; j++) {
303 const SMDS_MeshNode *a, *b, *c, *d;
304 a = quad->uv_grid[j * nbhoriz + i].node;
305 b = quad->uv_grid[j * nbhoriz + i + 1].node;
306 c = quad->uv_grid[(j + 1) * nbhoriz + i + 1].node;
307 d = quad->uv_grid[(j + 1) * nbhoriz + i].node;
308 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
310 meshDS->SetMeshElementOnShape(face, geomFaceID);
315 const vector<UVPtStruct>& uv_e0 = quad->side[0]->GetUVPtStruct(true,0);
316 const vector<UVPtStruct>& uv_e1 = quad->side[1]->GetUVPtStruct(false,1);
317 const vector<UVPtStruct>& uv_e2 = quad->side[2]->GetUVPtStruct(true,1);
318 const vector<UVPtStruct>& uv_e3 = quad->side[3]->GetUVPtStruct(false,0);
320 if (uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty())
321 return error(COMPERR_BAD_INPUT_MESH);
323 double eps = Precision::Confusion();
325 // Boundary quadrangles
327 if (quad->isEdgeOut[0]) {
330 // |___|___|___|___|___|___|
332 // |___|___|___|___|___|___|
334 // |___|___|___|___|___|___| __ first row of the regular grid
335 // . . . . . . . . . __ down edge nodes
337 // >->->->->->->->->->->->-> -- direction of processing
339 int g = 0; // number of last processed node in the regular grid
341 // number of last node of the down edge to be processed
342 int stop = nbdown - 1;
343 // if right edge is out, we will stop at a node, previous to the last one
344 if (quad->isEdgeOut[1]) stop--;
346 // for each node of the down edge find nearest node
347 // in the first row of the regular grid and link them
348 for (i = 0; i < stop; i++) {
349 const SMDS_MeshNode *a, *b, *c, *d;
351 b = uv_e0[i + 1].node;
352 gp_Pnt pb (b->X(), b->Y(), b->Z());
354 // find node c in the regular grid, which will be linked with node b
357 // right bound reached, link with the rightmost node
359 c = quad->uv_grid[nbhoriz + iup].node;
362 // find in the grid node c, nearest to the b
363 double mind = RealLast();
364 for (int k = g; k <= iup; k++) {
366 const SMDS_MeshNode *nk;
367 if (k < ilow) // this can be, if left edge is out
368 nk = uv_e3[1].node; // get node from the left edge
370 nk = quad->uv_grid[nbhoriz + k].node; // get one of middle nodes
372 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
373 double dist = pb.Distance(pnk);
374 if (dist < mind - eps) {
384 if (near == g) { // make triangle
385 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
386 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
388 else { // make quadrangle
392 d = quad->uv_grid[nbhoriz + near - 1].node;
393 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
395 if (!myTrianglePreference){
396 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
397 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
400 SplitQuad(meshDS, geomFaceID, a, b, c, d);
403 // if node d is not at position g - make additional triangles
405 for (int k = near - 1; k > g; k--) {
406 c = quad->uv_grid[nbhoriz + k].node;
410 d = quad->uv_grid[nbhoriz + k - 1].node;
411 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
412 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
419 if (quad->isEdgeOut[2]) {
422 // <-<-<-<-<-<-<-<-<-<-<-<-< -- direction of processing
424 // . . . . . . . . . __ up edge nodes
425 // ___ ___ ___ ___ ___ ___ __ first row of the regular grid
427 // |___|___|___|___|___|___|
429 // |___|___|___|___|___|___|
432 int g = nbhoriz - 1; // last processed node in the regular grid
435 // if left edge is out, we will stop at a second node
436 if (quad->isEdgeOut[3]) stop++;
438 // for each node of the up edge find nearest node
439 // in the first row of the regular grid and link them
440 for (i = nbup - 1; i > stop; i--) {
441 const SMDS_MeshNode *a, *b, *c, *d;
443 b = uv_e2[i - 1].node;
444 gp_Pnt pb (b->X(), b->Y(), b->Z());
446 // find node c in the grid, which will be linked with node b
448 if (i == stop + 1) { // left bound reached, link with the leftmost node
449 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + ilow].node;
452 // find node c in the grid, nearest to the b
453 double mind = RealLast();
454 for (int k = g; k >= ilow; k--) {
455 const SMDS_MeshNode *nk;
457 nk = uv_e1[nbright - 2].node;
459 nk = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
460 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
461 double dist = pb.Distance(pnk);
462 if (dist < mind - eps) {
472 if (near == g) { // make triangle
473 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
474 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
476 else { // make quadrangle
478 d = uv_e1[nbright - 2].node;
480 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + near + 1].node;
481 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
482 if (!myTrianglePreference){
483 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
484 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
487 SplitQuad(meshDS, geomFaceID, a, b, c, d);
490 if (near + 1 < g) { // if d not is at g - make additional triangles
491 for (int k = near + 1; k < g; k++) {
492 c = quad->uv_grid[nbhoriz*(nbvertic - 2) + k].node;
494 d = uv_e1[nbright - 2].node;
496 d = quad->uv_grid[nbhoriz*(nbvertic - 2) + k + 1].node;
497 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
498 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
507 // right or left boundary quadrangles
508 if (quad->isEdgeOut[1]) {
509 // MESSAGE("right edge is out");
510 int g = 0; // last processed node in the grid
511 int stop = nbright - 1;
512 if (quad->isEdgeOut[2]) stop--;
513 for (i = 0; i < stop; i++) {
514 const SMDS_MeshNode *a, *b, *c, *d;
516 b = uv_e1[i + 1].node;
517 gp_Pnt pb (b->X(), b->Y(), b->Z());
519 // find node c in the grid, nearest to the b
521 if (i == stop - 1) { // up bondary reached
522 c = quad->uv_grid[nbhoriz*(jup + 1) - 2].node;
525 double mind = RealLast();
526 for (int k = g; k <= jup; k++) {
527 const SMDS_MeshNode *nk;
529 nk = uv_e0[nbdown - 2].node;
531 nk = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
532 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
533 double dist = pb.Distance(pnk);
534 if (dist < mind - eps) {
544 if (near == g) { // make triangle
545 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
546 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
548 else { // make quadrangle
550 d = uv_e0[nbdown - 2].node;
552 d = quad->uv_grid[nbhoriz*near - 2].node;
553 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
555 if (!myTrianglePreference){
556 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
557 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
560 SplitQuad(meshDS, geomFaceID, a, b, c, d);
563 if (near - 1 > g) { // if d not is at g - make additional triangles
564 for (int k = near - 1; k > g; k--) {
565 c = quad->uv_grid[nbhoriz*(k + 1) - 2].node;
567 d = uv_e0[nbdown - 2].node;
569 d = quad->uv_grid[nbhoriz*k - 2].node;
570 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
571 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
578 if (quad->isEdgeOut[3]) {
579 // MESSAGE("left edge is out");
580 int g = nbvertic - 1; // last processed node in the grid
582 if (quad->isEdgeOut[0]) stop++;
583 for (i = nbleft - 1; i > stop; i--) {
584 const SMDS_MeshNode *a, *b, *c, *d;
586 b = uv_e3[i - 1].node;
587 gp_Pnt pb (b->X(), b->Y(), b->Z());
589 // find node c in the grid, nearest to the b
591 if (i == stop + 1) { // down bondary reached
592 c = quad->uv_grid[nbhoriz*jlow + 1].node;
595 double mind = RealLast();
596 for (int k = g; k >= jlow; k--) {
597 const SMDS_MeshNode *nk;
601 nk = quad->uv_grid[nbhoriz*k + 1].node;
602 gp_Pnt pnk (nk->X(), nk->Y(), nk->Z());
603 double dist = pb.Distance(pnk);
604 if (dist < mind - eps) {
614 if (near == g) { // make triangle
615 SMDS_MeshFace* face = myTool->AddFace(a, b, c);
616 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
618 else { // make quadrangle
622 d = quad->uv_grid[nbhoriz*(near + 1) + 1].node;
623 //SMDS_MeshFace* face = meshDS->AddFace(a, b, c, d);
624 if (!myTrianglePreference){
625 SMDS_MeshFace* face = myTool->AddFace(a, b, c, d);
626 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
629 SplitQuad(meshDS, geomFaceID, a, b, c, d);
632 if (near + 1 < g) { // if d not is at g - make additional triangles
633 for (int k = near + 1; k < g; k++) {
634 c = quad->uv_grid[nbhoriz*k + 1].node;
638 d = quad->uv_grid[nbhoriz*(k + 1) + 1].node;
639 SMDS_MeshFace* face = myTool->AddFace(a, c, d);
640 if (face) meshDS->SetMeshElementOnShape(face, geomFaceID);
654 //=============================================================================
658 //=============================================================================
660 bool StdMeshers_Quadrangle_2D::Evaluate(SMESH_Mesh& aMesh,
661 const TopoDS_Shape& aShape,
662 MapShapeNbElems& aResMap)
665 aMesh.GetSubMesh(aShape);
667 std::vector<int> aNbNodes(4);
668 bool IsQuadratic = false;
669 if (!CheckNbEdgesForEvaluate(aMesh, aShape, aResMap, aNbNodes, IsQuadratic)) {
670 std::vector<int> aResVec(SMDSEntity_Last);
671 for (int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
672 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
673 aResMap.insert(std::make_pair(sm,aResVec));
674 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
675 smError.reset(new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
679 if (myQuadranglePreference) {
680 int n1 = aNbNodes[0];
681 int n2 = aNbNodes[1];
682 int n3 = aNbNodes[2];
683 int n4 = aNbNodes[3];
684 int nfull = n1+n2+n3+n4;
687 if (nfull==ntmp && ((n1!=n3) || (n2!=n4))) {
688 // special path for using only quandrangle faces
689 return EvaluateQuadPref(aMesh, aShape, aNbNodes, aResMap, IsQuadratic);
694 int nbdown = aNbNodes[0];
695 int nbup = aNbNodes[2];
697 int nbright = aNbNodes[1];
698 int nbleft = aNbNodes[3];
700 int nbhoriz = Min(nbdown, nbup);
701 int nbvertic = Min(nbright, nbleft);
703 int dh = Max(nbdown, nbup) - nbhoriz;
704 int dv = Max(nbright, nbleft) - nbvertic;
711 int nbNodes = (nbhoriz-2)*(nbvertic-2);
712 //int nbFaces3 = dh + dv + kdh*(nbvertic-1)*2 + kdv*(nbhoriz-1)*2;
713 int nbFaces3 = dh + dv;
714 //if (kdh==1 && kdv==1) nbFaces3 -= 2;
715 //if (dh>0 && dv>0) nbFaces3 -= 2;
716 //int nbFaces4 = (nbhoriz-1-kdh)*(nbvertic-1-kdv);
717 int nbFaces4 = (nbhoriz-1)*(nbvertic-1);
719 std::vector<int> aVec(SMDSEntity_Last);
720 for (int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
722 aVec[SMDSEntity_Quad_Triangle] = nbFaces3;
723 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4;
724 int nbbndedges = nbdown + nbup + nbright + nbleft -4;
725 int nbintedges = (nbFaces4*4 + nbFaces3*3 - nbbndedges) / 2;
726 aVec[SMDSEntity_Node] = nbNodes + nbintedges;
727 if (aNbNodes.size()==5) {
728 aVec[SMDSEntity_Quad_Triangle] = nbFaces3 + aNbNodes[3] -1;
729 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces4 - aNbNodes[3] +1;
733 aVec[SMDSEntity_Node] = nbNodes;
734 aVec[SMDSEntity_Triangle] = nbFaces3;
735 aVec[SMDSEntity_Quadrangle] = nbFaces4;
736 if (aNbNodes.size()==5) {
737 aVec[SMDSEntity_Triangle] = nbFaces3 + aNbNodes[3] - 1;
738 aVec[SMDSEntity_Quadrangle] = nbFaces4 - aNbNodes[3] + 1;
741 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
742 aResMap.insert(std::make_pair(sm,aVec));
748 //================================================================================
750 * \brief Return true if only two given edges meat at their common vertex
752 //================================================================================
754 static bool twoEdgesMeatAtVertex(const TopoDS_Edge& e1,
755 const TopoDS_Edge& e2,
759 if (!TopExp::CommonVertex(e1, e2, v))
761 TopTools_ListIteratorOfListOfShape ancestIt(mesh.GetAncestors(v));
762 for (; ancestIt.More() ; ancestIt.Next())
763 if (ancestIt.Value().ShapeType() == TopAbs_EDGE)
764 if (!e1.IsSame(ancestIt.Value()) && !e2.IsSame(ancestIt.Value()))
769 //=============================================================================
773 //=============================================================================
775 FaceQuadStruct* StdMeshers_Quadrangle_2D::CheckNbEdges(SMESH_Mesh & aMesh,
776 const TopoDS_Shape & aShape)
777 //throw(SALOME_Exception)
779 const TopoDS_Face & F = TopoDS::Face(aShape);
780 const bool ignoreMediumNodes = _quadraticMesh;
782 // verify 1 wire only, with 4 edges
784 list< TopoDS_Edge > edges;
785 list< int > nbEdgesInWire;
786 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
788 error(COMPERR_BAD_SHAPE, TComm("Wrong number of wires: ") << nbWire);
791 FaceQuadStruct* quad = new FaceQuadStruct;
793 quad->side.reserve(nbEdgesInWire.front());
796 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
797 if (nbEdgesInWire.front() == 3) // exactly 3 edges
799 SMESH_Comment comment;
800 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
801 if (myTriaVertexID == -1)
803 comment << "No Base vertex parameter provided for a trilateral geometrical face";
807 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
809 TopoDS_Edge E1,E2,E3;
810 for (; edgeIt != edges.end(); ++edgeIt) {
811 TopoDS_Edge E = *edgeIt;
812 TopoDS_Vertex VF, VL;
813 TopExp::Vertices(E, VF, VL, true);
816 else if (VL.IsSame(V))
821 if (!E1.IsNull() && !E2.IsNull() && !E3.IsNull())
823 quad->side.push_back(new StdMeshers_FaceSide(F, E1, &aMesh, true, ignoreMediumNodes));
824 quad->side.push_back(new StdMeshers_FaceSide(F, E2, &aMesh, true, ignoreMediumNodes));
825 quad->side.push_back(new StdMeshers_FaceSide(F, E3, &aMesh, false,ignoreMediumNodes));
826 const vector<UVPtStruct>& UVPSleft = quad->side[0]->GetUVPtStruct(true,0);
827 /* vector<UVPtStruct>& UVPStop = */quad->side[1]->GetUVPtStruct(false,1);
828 /* vector<UVPtStruct>& UVPSright = */quad->side[2]->GetUVPtStruct(true,1);
829 const SMDS_MeshNode* aNode = UVPSleft[0].node;
830 gp_Pnt2d aPnt2d(UVPSleft[0].u, UVPSleft[0].v);
831 quad->side.push_back(new StdMeshers_FaceSide(aNode, aPnt2d, quad->side[1]));
835 comment << "Invalid Base vertex parameter: " << myTriaVertexID << " is not among [";
836 TopTools_MapOfShape vMap;
837 for (TopExp_Explorer v(aShape, TopAbs_VERTEX); v.More(); v.Next())
838 if (vMap.Add(v.Current()))
839 comment << meshDS->ShapeToIndex(v.Current()) << (vMap.Extent()==3 ? "]" : ", ");
845 else if (nbEdgesInWire.front() == 4) { // exactly 4 edges
846 for (; edgeIt != edges.end(); ++edgeIt, nbSides++)
847 quad->side.push_back(new StdMeshers_FaceSide(F, *edgeIt, &aMesh,
848 nbSides<TOP_SIDE, ignoreMediumNodes));
850 else if (nbEdgesInWire.front() > 4) { // more than 4 edges - try to unite some
851 list< TopoDS_Edge > sideEdges;
852 while (!edges.empty()) {
854 sideEdges.splice(sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
855 bool sameSide = true;
856 while (!edges.empty() && sameSide) {
857 sameSide = SMESH_Algo::IsContinuous(sideEdges.back(), edges.front());
859 sideEdges.splice(sideEdges.end(), edges, edges.begin());
861 if (nbSides == 0) { // go backward from the first edge
863 while (!edges.empty() && sameSide) {
864 sameSide = SMESH_Algo::IsContinuous(sideEdges.front(), edges.back());
866 sideEdges.splice(sideEdges.begin(), edges, --edges.end());
869 quad->side.push_back(new StdMeshers_FaceSide(F, sideEdges, &aMesh,
870 nbSides<TOP_SIDE, ignoreMediumNodes));
873 // issue 20222. Try to unite only edges shared by two same faces
875 // delete found sides
876 { FaceQuadStruct cleaner(*quad); }
878 quad->side.reserve(nbEdgesInWire.front());
881 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
882 while (!edges.empty()) {
884 sideEdges.splice(sideEdges.end(), edges, edges.begin());
885 bool sameSide = true;
886 while (!edges.empty() && sameSide) {
888 SMESH_Algo::IsContinuous(sideEdges.back(), edges.front()) &&
889 twoEdgesMeatAtVertex(sideEdges.back(), edges.front(), aMesh);
891 sideEdges.splice(sideEdges.end(), edges, edges.begin());
893 if (nbSides == 0) { // go backward from the first edge
895 while (!edges.empty() && sameSide) {
897 SMESH_Algo::IsContinuous(sideEdges.front(), edges.back()) &&
898 twoEdgesMeatAtVertex(sideEdges.front(), edges.back(), aMesh);
900 sideEdges.splice(sideEdges.begin(), edges, --edges.end());
903 quad->side.push_back(new StdMeshers_FaceSide(F, sideEdges, &aMesh,
904 nbSides<TOP_SIDE, ignoreMediumNodes));
911 MESSAGE ("StdMeshers_Quadrangle_2D. Edge IDs of " << nbSides << " sides:\n");
912 for (int i = 0; i < nbSides; ++i) {
914 for (int e = 0; e < quad->side[i]->NbEdges(); ++e)
915 MESSAGE (myTool->GetMeshDS()->ShapeToIndex(quad->side[i]->Edge(e)) << " ");
921 nbSides = nbEdgesInWire.front();
922 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
931 //=============================================================================
935 //=============================================================================
937 bool StdMeshers_Quadrangle_2D::CheckNbEdgesForEvaluate(SMESH_Mesh& aMesh,
938 const TopoDS_Shape & aShape,
939 MapShapeNbElems& aResMap,
940 std::vector<int>& aNbNodes,
944 const TopoDS_Face & F = TopoDS::Face(aShape);
946 // verify 1 wire only, with 4 edges
948 list< TopoDS_Edge > edges;
949 list< int > nbEdgesInWire;
950 int nbWire = SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
958 list< TopoDS_Edge >::iterator edgeIt = edges.begin();
959 SMESH_subMesh * sm = aMesh.GetSubMesh(*edgeIt);
960 MapShapeNbElemsItr anIt = aResMap.find(sm);
961 if (anIt==aResMap.end()) {
964 std::vector<int> aVec = (*anIt).second;
965 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
966 if (nbEdgesInWire.front() == 3) { // exactly 3 edges
967 if (myTriaVertexID>0) {
968 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
969 TopoDS_Vertex V = TopoDS::Vertex(meshDS->IndexToShape(myTriaVertexID));
971 TopoDS_Edge E1,E2,E3;
972 for (; edgeIt != edges.end(); ++edgeIt) {
973 TopoDS_Edge E = TopoDS::Edge(*edgeIt);
974 TopoDS_Vertex VF, VL;
975 TopExp::Vertices(E, VF, VL, true);
978 else if (VL.IsSame(V))
983 SMESH_subMesh * sm = aMesh.GetSubMesh(E1);
984 MapShapeNbElemsItr anIt = aResMap.find(sm);
985 if (anIt==aResMap.end()) return false;
986 std::vector<int> aVec = (*anIt).second;
988 aNbNodes[0] = (aVec[SMDSEntity_Node]-1)/2 + 2;
990 aNbNodes[0] = aVec[SMDSEntity_Node] + 2;
991 sm = aMesh.GetSubMesh(E2);
992 anIt = aResMap.find(sm);
993 if (anIt==aResMap.end()) return false;
994 aVec = (*anIt).second;
996 aNbNodes[1] = (aVec[SMDSEntity_Node]-1)/2 + 2;
998 aNbNodes[1] = aVec[SMDSEntity_Node] + 2;
999 sm = aMesh.GetSubMesh(E3);
1000 anIt = aResMap.find(sm);
1001 if (anIt==aResMap.end()) return false;
1002 aVec = (*anIt).second;
1004 aNbNodes[2] = (aVec[SMDSEntity_Node]-1)/2 + 2;
1006 aNbNodes[2] = aVec[SMDSEntity_Node] + 2;
1007 aNbNodes[3] = aNbNodes[1];
1013 if (nbEdgesInWire.front() == 4) { // exactly 4 edges
1014 for (; edgeIt != edges.end(); edgeIt++) {
1015 SMESH_subMesh * sm = aMesh.GetSubMesh(*edgeIt);
1016 MapShapeNbElemsItr anIt = aResMap.find(sm);
1017 if (anIt==aResMap.end()) {
1020 std::vector<int> aVec = (*anIt).second;
1022 aNbNodes[nbSides] = (aVec[SMDSEntity_Node]-1)/2 + 2;
1024 aNbNodes[nbSides] = aVec[SMDSEntity_Node] + 2;
1028 else if (nbEdgesInWire.front() > 4) { // more than 4 edges - try to unite some
1029 list< TopoDS_Edge > sideEdges;
1030 while (!edges.empty()) {
1032 sideEdges.splice(sideEdges.end(), edges, edges.begin()); // edges.front() -> sideEdges.end()
1033 bool sameSide = true;
1034 while (!edges.empty() && sameSide) {
1035 sameSide = SMESH_Algo::IsContinuous(sideEdges.back(), edges.front());
1037 sideEdges.splice(sideEdges.end(), edges, edges.begin());
1039 if (nbSides == 0) { // go backward from the first edge
1041 while (!edges.empty() && sameSide) {
1042 sameSide = SMESH_Algo::IsContinuous(sideEdges.front(), edges.back());
1044 sideEdges.splice(sideEdges.begin(), edges, --edges.end());
1047 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1048 aNbNodes[nbSides] = 1;
1049 for (; ite!=sideEdges.end(); ite++) {
1050 SMESH_subMesh * sm = aMesh.GetSubMesh(*ite);
1051 MapShapeNbElemsItr anIt = aResMap.find(sm);
1052 if (anIt==aResMap.end()) {
1055 std::vector<int> aVec = (*anIt).second;
1057 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1059 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1063 // issue 20222. Try to unite only edges shared by two same faces
1066 SMESH_Block::GetOrderedEdges (F, V, edges, nbEdgesInWire);
1067 while (!edges.empty()) {
1069 sideEdges.splice(sideEdges.end(), edges, edges.begin());
1070 bool sameSide = true;
1071 while (!edges.empty() && sameSide) {
1073 SMESH_Algo::IsContinuous(sideEdges.back(), edges.front()) &&
1074 twoEdgesMeatAtVertex(sideEdges.back(), edges.front(), aMesh);
1076 sideEdges.splice(sideEdges.end(), edges, edges.begin());
1078 if (nbSides == 0) { // go backward from the first edge
1080 while (!edges.empty() && sameSide) {
1082 SMESH_Algo::IsContinuous(sideEdges.front(), edges.back()) &&
1083 twoEdgesMeatAtVertex(sideEdges.front(), edges.back(), aMesh);
1085 sideEdges.splice(sideEdges.begin(), edges, --edges.end());
1088 list<TopoDS_Edge>::iterator ite = sideEdges.begin();
1089 aNbNodes[nbSides] = 1;
1090 for (; ite!=sideEdges.end(); ite++) {
1091 SMESH_subMesh * sm = aMesh.GetSubMesh(*ite);
1092 MapShapeNbElemsItr anIt = aResMap.find(sm);
1093 if (anIt==aResMap.end()) {
1096 std::vector<int> aVec = (*anIt).second;
1098 aNbNodes[nbSides] += (aVec[SMDSEntity_Node]-1)/2 + 1;
1100 aNbNodes[nbSides] += aVec[SMDSEntity_Node] + 1;
1108 nbSides = nbEdgesInWire.front();
1109 error(COMPERR_BAD_SHAPE, TComm("Face must have 4 sides but not ") << nbSides);
1117 //=============================================================================
1121 //=============================================================================
1123 FaceQuadStruct *StdMeshers_Quadrangle_2D::CheckAnd2Dcompute
1124 (SMESH_Mesh & aMesh,
1125 const TopoDS_Shape & aShape,
1126 const bool CreateQuadratic) //throw(SALOME_Exception)
1128 _quadraticMesh = CreateQuadratic;
1130 FaceQuadStruct *quad = CheckNbEdges(aMesh, aShape);
1132 if (!quad) return 0;
1134 // set normalized grid on unit square in parametric domain
1135 bool stat = SetNormalizedGrid(aMesh, aShape, quad);
1137 if (quad) delete quad;
1144 //=============================================================================
1148 //=============================================================================
1150 faceQuadStruct::~faceQuadStruct()
1152 for (int i = 0; i < side.size(); i++) {
1153 if (side[i]) delete side[i];
1155 if (uv_grid) delete [] uv_grid;
1159 inline const vector<UVPtStruct>& GetUVPtStructIn(FaceQuadStruct* quad, int i, int nbSeg)
1161 bool isXConst = (i == BOTTOM_SIDE || i == TOP_SIDE);
1162 double constValue = (i == BOTTOM_SIDE || i == LEFT_SIDE) ? 0 : 1;
1164 quad->isEdgeOut[i] ?
1165 quad->side[i]->SimulateUVPtStruct(nbSeg,isXConst,constValue) :
1166 quad->side[i]->GetUVPtStruct(isXConst,constValue);
1168 inline gp_UV CalcUV(double x, double y,
1169 const gp_UV& a0,const gp_UV& a1,const gp_UV& a2,const gp_UV& a3,
1170 const gp_UV& p0,const gp_UV& p1,const gp_UV& p2,const gp_UV& p3)
1173 ((1 - y) * p0 + x * p1 + y * p2 + (1 - x) * p3 ) -
1174 ((1 - x) * (1 - y) * a0 + x * (1 - y) * a1 + x * y * a2 + (1 - x) * y * a3);
1178 //=============================================================================
1182 //=============================================================================
1184 bool StdMeshers_Quadrangle_2D::SetNormalizedGrid (SMESH_Mesh & aMesh,
1185 const TopoDS_Shape& aShape,
1186 FaceQuadStruct* & quad) //throw (SALOME_Exception)
1188 // Algorithme décrit dans "Génération automatique de maillages"
1189 // P.L. GEORGE, MASSON, § 6.4.1 p. 84-85
1190 // traitement dans le domaine paramétrique 2d u,v
1191 // transport - projection sur le carré unité
1193 // MESSAGE("StdMeshers_Quadrangle_2D::SetNormalizedGrid");
1194 // const TopoDS_Face& F = TopoDS::Face(aShape);
1196 // 1 --- find orientation of the 4 edges, by test on extrema
1199 // |<----north-2-------^ a3 -------------> a2
1201 // west-3 east-1 =right | |
1205 // v----south-0--------> a0 -------------> a1
1210 // 3 --- 2D normalized values on unit square [0..1][0..1]
1212 int nbhoriz = Min(quad->side[0]->NbPoints(), quad->side[2]->NbPoints());
1213 int nbvertic = Min(quad->side[1]->NbPoints(), quad->side[3]->NbPoints());
1215 quad->isEdgeOut[0] = (quad->side[0]->NbPoints() > quad->side[2]->NbPoints());
1216 quad->isEdgeOut[1] = (quad->side[1]->NbPoints() > quad->side[3]->NbPoints());
1217 quad->isEdgeOut[2] = (quad->side[2]->NbPoints() > quad->side[0]->NbPoints());
1218 quad->isEdgeOut[3] = (quad->side[3]->NbPoints() > quad->side[1]->NbPoints());
1220 UVPtStruct *uv_grid = quad->uv_grid = new UVPtStruct[nbvertic * nbhoriz];
1222 const vector<UVPtStruct>& uv_e0 = GetUVPtStructIn(quad, 0, nbhoriz - 1);
1223 const vector<UVPtStruct>& uv_e1 = GetUVPtStructIn(quad, 1, nbvertic - 1);
1224 const vector<UVPtStruct>& uv_e2 = GetUVPtStructIn(quad, 2, nbhoriz - 1);
1225 const vector<UVPtStruct>& uv_e3 = GetUVPtStructIn(quad, 3, nbvertic - 1);
1227 if (uv_e0.empty() || uv_e1.empty() || uv_e2.empty() || uv_e3.empty())
1228 //return error("Can't find nodes on sides");
1229 return error(COMPERR_BAD_INPUT_MESH);
1231 // nodes Id on "in" edges
1232 if (! quad->isEdgeOut[0]) {
1234 for (int i = 0; i < nbhoriz; i++) { // down
1235 int ij = j * nbhoriz + i;
1236 uv_grid[ij].node = uv_e0[i].node;
1239 if (! quad->isEdgeOut[1]) {
1240 int i = nbhoriz - 1;
1241 for (int j = 0; j < nbvertic; j++) { // right
1242 int ij = j * nbhoriz + i;
1243 uv_grid[ij].node = uv_e1[j].node;
1246 if (! quad->isEdgeOut[2]) {
1247 int j = nbvertic - 1;
1248 for (int i = 0; i < nbhoriz; i++) { // up
1249 int ij = j * nbhoriz + i;
1250 uv_grid[ij].node = uv_e2[i].node;
1253 if (! quad->isEdgeOut[3]) {
1255 for (int j = 0; j < nbvertic; j++) { // left
1256 int ij = j * nbhoriz + i;
1257 uv_grid[ij].node = uv_e3[j].node;
1261 // normalized 2d values on grid
1262 for (int i = 0; i < nbhoriz; i++) {
1263 for (int j = 0; j < nbvertic; j++) {
1264 int ij = j * nbhoriz + i;
1265 // --- droite i cste : x = x0 + y(x1-x0)
1266 double x0 = uv_e0[i].normParam; // bas - sud
1267 double x1 = uv_e2[i].normParam; // haut - nord
1268 // --- droite j cste : y = y0 + x(y1-y0)
1269 double y0 = uv_e3[j].normParam; // gauche-ouest
1270 double y1 = uv_e1[j].normParam; // droite - est
1271 // --- intersection : x=x0+(y0+x(y1-y0))(x1-x0)
1272 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1273 double y = y0 + x * (y1 - y0);
1276 //MESSAGE("-xy-01 "<<x0<<" "<<x1<<" "<<y0<<" "<<y1);
1277 //MESSAGE("-xy-norm "<<i<<" "<<j<<" "<<x<<" "<<y);
1281 // 4 --- projection on 2d domain (u,v)
1282 gp_UV a0(uv_e0.front().u, uv_e0.front().v);
1283 gp_UV a1(uv_e0.back().u, uv_e0.back().v);
1284 gp_UV a2(uv_e2.back().u, uv_e2.back().v);
1285 gp_UV a3(uv_e2.front().u, uv_e2.front().v);
1287 for (int i = 0; i < nbhoriz; i++) {
1288 for (int j = 0; j < nbvertic; j++) {
1289 int ij = j * nbhoriz + i;
1290 double x = uv_grid[ij].x;
1291 double y = uv_grid[ij].y;
1292 double param_0 = uv_e0[0].normParam + x * (uv_e0.back().normParam - uv_e0[0].normParam); // sud
1293 double param_2 = uv_e2[0].normParam + x * (uv_e2.back().normParam - uv_e2[0].normParam); // nord
1294 double param_1 = uv_e1[0].normParam + y * (uv_e1.back().normParam - uv_e1[0].normParam); // est
1295 double param_3 = uv_e3[0].normParam + y * (uv_e3.back().normParam - uv_e3[0].normParam); // ouest
1297 //MESSAGE("params "<<param_0<<" "<<param_1<<" "<<param_2<<" "<<param_3);
1298 gp_UV p0 = quad->side[0]->Value2d(param_0).XY();
1299 gp_UV p1 = quad->side[1]->Value2d(param_1).XY();
1300 gp_UV p2 = quad->side[2]->Value2d(param_2).XY();
1301 gp_UV p3 = quad->side[3]->Value2d(param_3).XY();
1303 gp_UV uv = CalcUV(x,y, a0,a1,a2,a3, p0,p1,p2,p3);
1305 uv_grid[ij].u = uv.X();
1306 uv_grid[ij].v = uv.Y();
1312 //=======================================================================
1313 //function : ShiftQuad
1314 //purpose : auxilary function for ComputeQuadPref
1315 //=======================================================================
1317 static void ShiftQuad(FaceQuadStruct* quad, const int num, bool)
1319 StdMeshers_FaceSide* side[4] = { quad->side[0], quad->side[1], quad->side[2], quad->side[3] };
1320 for (int i = BOTTOM_SIDE; i < NB_SIDES; ++i) {
1321 int id = (i + num) % NB_SIDES;
1322 bool wasForward = (i < TOP_SIDE);
1323 bool newForward = (id < TOP_SIDE);
1324 if (wasForward != newForward)
1325 side[ i ]->Reverse();
1326 quad->side[ id ] = side[ i ];
1330 //=======================================================================
1332 //purpose : auxilary function for ComputeQuadPref
1333 //=======================================================================
1335 static gp_UV CalcUV(double x0, double x1, double y0, double y1,
1336 FaceQuadStruct* quad,
1337 const gp_UV& a0, const gp_UV& a1,
1338 const gp_UV& a2, const gp_UV& a3)
1340 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
1341 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1342 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
1343 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1345 double x = (x0 + y0 * (x1 - x0)) / (1 - (y1 - y0) * (x1 - x0));
1346 double y = y0 + x * (y1 - y0);
1348 double param_b = uv_eb[0].normParam + x * (uv_eb.back().normParam - uv_eb[0].normParam);
1349 double param_t = uv_et[0].normParam + x * (uv_et.back().normParam - uv_et[0].normParam);
1350 double param_r = uv_er[0].normParam + y * (uv_er.back().normParam - uv_er[0].normParam);
1351 double param_l = uv_el[0].normParam + y * (uv_el.back().normParam - uv_el[0].normParam);
1353 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(param_b).XY();
1354 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(param_r).XY();
1355 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(param_t).XY();
1356 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(param_l).XY();
1358 gp_UV uv = CalcUV(x,y, a0,a1,a2,a3, p0,p1,p2,p3);
1363 //=======================================================================
1364 //function : CalcUV2
1365 //purpose : auxilary function for ComputeQuadPref
1366 //=======================================================================
1368 static gp_UV CalcUV2(double x, double y,
1369 FaceQuadStruct* quad,
1370 const gp_UV& a0, const gp_UV& a1,
1371 const gp_UV& a2, const gp_UV& a3)
1373 gp_UV p0 = quad->side[BOTTOM_SIDE]->Value2d(x).XY();
1374 gp_UV p1 = quad->side[RIGHT_SIDE ]->Value2d(y).XY();
1375 gp_UV p2 = quad->side[TOP_SIDE ]->Value2d(x).XY();
1376 gp_UV p3 = quad->side[LEFT_SIDE ]->Value2d(y).XY();
1378 gp_UV uv = CalcUV(x,y, a0,a1,a2,a3, p0,p1,p2,p3);
1384 //=======================================================================
1386 * Create only quandrangle faces
1388 //=======================================================================
1390 bool StdMeshers_Quadrangle_2D::ComputeQuadPref (SMESH_Mesh & aMesh,
1391 const TopoDS_Shape& aShape,
1392 FaceQuadStruct* quad)
1394 // Auxilary key in order to keep old variant
1395 // of meshing after implementation new variant
1396 // for bug 0016220 from Mantis.
1397 bool OldVersion = false;
1398 if (myQuadType == QUAD_QUADRANGLE_PREF_REVERSED)
1401 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
1402 const TopoDS_Face& F = TopoDS::Face(aShape);
1403 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1405 int i,j,geomFaceID = meshDS->ShapeToIndex(F);
1407 int nb = quad->side[0]->NbPoints();
1408 int nr = quad->side[1]->NbPoints();
1409 int nt = quad->side[2]->NbPoints();
1410 int nl = quad->side[3]->NbPoints();
1411 int dh = abs(nb-nt);
1412 int dv = abs(nr-nl);
1416 // it is a base case => not shift quad but me be replacement is need
1417 ShiftQuad(quad,0,WisF);
1420 // we have to shift quad on 2
1421 ShiftQuad(quad,2,WisF);
1426 // we have to shift quad on 1
1427 ShiftQuad(quad,1,WisF);
1430 // we have to shift quad on 3
1431 ShiftQuad(quad,3,WisF);
1435 nb = quad->side[0]->NbPoints();
1436 nr = quad->side[1]->NbPoints();
1437 nt = quad->side[2]->NbPoints();
1438 nl = quad->side[3]->NbPoints();
1441 int nbh = Max(nb,nt);
1442 int nbv = Max(nr,nl);
1446 // ----------- Old version ---------------
1447 // orientation of face and 3 main domain for future faces
1453 // left | | | | rigth
1460 // ----------- New version ---------------
1461 // orientation of face and 3 main domain for future faces
1467 // left |/________\| rigth
1483 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
1484 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
1485 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
1486 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
1488 if (uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl)
1489 return error(COMPERR_BAD_INPUT_MESH);
1491 // arrays for normalized params
1492 //cout<<"Dump B:"<<endl;
1493 TColStd_SequenceOfReal npb, npr, npt, npl;
1494 for (i=0; i<nb; i++) {
1495 npb.Append(uv_eb[i].normParam);
1496 //cout<<"i="<<i<<" par="<<uv_eb[i].normParam<<" npar="<<uv_eb[i].normParam;
1497 //const SMDS_MeshNode* N = uv_eb[i].node;
1498 //cout<<" node("<<N->X()<<","<<N->Y()<<","<<N->Z()<<")"<<endl;
1500 for (i=0; i<nr; i++) {
1501 npr.Append(uv_er[i].normParam);
1503 for (i=0; i<nt; i++) {
1504 npt.Append(uv_et[i].normParam);
1506 for (i=0; i<nl; i++) {
1507 npl.Append(uv_el[i].normParam);
1512 // add some params to right and left after the first param
1515 double dpr = (npr.Value(2) - npr.Value(1))/(dr+1);
1516 for (i=1; i<=dr; i++) {
1517 npr.InsertAfter(1,npr.Value(2)-dpr);
1521 dpr = (npl.Value(2) - npl.Value(1))/(dl+1);
1522 for (i=1; i<=dl; i++) {
1523 npl.InsertAfter(1,npl.Value(2)-dpr);
1527 //for (i=1; i<=npb.Length(); i++) {
1528 // cout<<" "<<npb.Value(i);
1532 gp_XY a0(uv_eb.front().u, uv_eb.front().v);
1533 gp_XY a1(uv_eb.back().u, uv_eb.back().v);
1534 gp_XY a2(uv_et.back().u, uv_et.back().v);
1535 gp_XY a3(uv_et.front().u, uv_et.front().v);
1536 //cout<<" a0("<<a0.X()<<","<<a0.Y()<<")"<<" a1("<<a1.X()<<","<<a1.Y()<<")"
1537 // <<" a2("<<a2.X()<<","<<a2.Y()<<")"<<" a3("<<a3.X()<<","<<a3.Y()<<")"<<endl;
1539 int nnn = Min(nr,nl);
1540 // auxilary sequence of XY for creation nodes
1541 // in the bottom part of central domain
1542 // Length of UVL and UVR must be == nbv-nnn
1543 TColgp_SequenceOfXY UVL, UVR, UVT;
1546 // step1: create faces for left domain
1547 StdMeshers_Array2OfNode NodesL(1,dl+1,1,nl);
1549 for (j=1; j<=nl; j++)
1550 NodesL.SetValue(1,j,uv_el[j-1].node);
1553 for (i=1; i<=dl; i++)
1554 NodesL.SetValue(i+1,nl,uv_et[i].node);
1555 // create and add needed nodes
1556 TColgp_SequenceOfXY UVtmp;
1557 for (i=1; i<=dl; i++) {
1558 double x0 = npt.Value(i+1);
1561 double y0 = npl.Value(i+1);
1562 double y1 = npr.Value(i+1);
1563 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1564 gp_Pnt P = S->Value(UV.X(),UV.Y());
1565 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1566 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1567 NodesL.SetValue(i+1,1,N);
1568 if (UVL.Length()<nbv-nnn) UVL.Append(UV);
1570 for (j=2; j<nl; j++) {
1571 double y0 = npl.Value(dl+j);
1572 double y1 = npr.Value(dl+j);
1573 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1574 gp_Pnt P = S->Value(UV.X(),UV.Y());
1575 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1576 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1577 NodesL.SetValue(i+1,j,N);
1578 if (i==dl) UVtmp.Append(UV);
1581 for (i=1; i<=UVtmp.Length() && UVL.Length()<nbv-nnn; i++) {
1582 UVL.Append(UVtmp.Value(i));
1584 //cout<<"Dump NodesL:"<<endl;
1585 //for (i=1; i<=dl+1; i++) {
1587 // for (j=1; j<=nl; j++) {
1588 // cout<<" ("<<NodesL.Value(i,j)->X()<<","<<NodesL.Value(i,j)->Y()<<","<<NodesL.Value(i,j)->Z()<<")";
1593 for (i=1; i<=dl; i++) {
1594 for (j=1; j<nl; j++) {
1597 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i+1,j),
1598 NodesL.Value(i+1,j+1), NodesL.Value(i,j+1));
1599 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1603 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i,j+1),
1604 NodesL.Value(i+1,j+1), NodesL.Value(i+1,j));
1605 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1611 // fill UVL using c2d
1612 for (i=1; i<npl.Length() && UVL.Length()<nbv-nnn; i++) {
1613 UVL.Append(gp_UV (uv_el[i].u, uv_el[i].v));
1617 // step2: create faces for right domain
1618 StdMeshers_Array2OfNode NodesR(1,dr+1,1,nr);
1620 for (j=1; j<=nr; j++)
1621 NodesR.SetValue(1,j,uv_er[nr-j].node);
1624 for (i=1; i<=dr; i++)
1625 NodesR.SetValue(i+1,1,uv_et[nt-1-i].node);
1626 // create and add needed nodes
1627 TColgp_SequenceOfXY UVtmp;
1628 for (i=1; i<=dr; i++) {
1629 double x0 = npt.Value(nt-i);
1632 double y0 = npl.Value(i+1);
1633 double y1 = npr.Value(i+1);
1634 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1635 gp_Pnt P = S->Value(UV.X(),UV.Y());
1636 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1637 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1638 NodesR.SetValue(i+1,nr,N);
1639 if (UVR.Length()<nbv-nnn) UVR.Append(UV);
1641 for (j=2; j<nr; j++) {
1642 double y0 = npl.Value(nbv-j+1);
1643 double y1 = npr.Value(nbv-j+1);
1644 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1645 gp_Pnt P = S->Value(UV.X(),UV.Y());
1646 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1647 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1648 NodesR.SetValue(i+1,j,N);
1649 if (i==dr) UVtmp.Prepend(UV);
1652 for (i=1; i<=UVtmp.Length() && UVR.Length()<nbv-nnn; i++) {
1653 UVR.Append(UVtmp.Value(i));
1656 for (i=1; i<=dr; i++) {
1657 for (j=1; j<nr; j++) {
1660 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i+1,j),
1661 NodesR.Value(i+1,j+1), NodesR.Value(i,j+1));
1662 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1666 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i,j+1),
1667 NodesR.Value(i+1,j+1), NodesR.Value(i+1,j));
1668 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1674 // fill UVR using c2d
1675 for (i=1; i<npr.Length() && UVR.Length()<nbv-nnn; i++) {
1676 UVR.Append(gp_UV(uv_er[i].u, uv_er[i].v));
1680 // step3: create faces for central domain
1681 StdMeshers_Array2OfNode NodesC(1,nb,1,nbv);
1682 // add first line using NodesL
1683 for (i=1; i<=dl+1; i++)
1684 NodesC.SetValue(1,i,NodesL(i,1));
1685 for (i=2; i<=nl; i++)
1686 NodesC.SetValue(1,dl+i,NodesL(dl+1,i));
1687 // add last line using NodesR
1688 for (i=1; i<=dr+1; i++)
1689 NodesC.SetValue(nb,i,NodesR(i,nr));
1690 for (i=1; i<nr; i++)
1691 NodesC.SetValue(nb,dr+i+1,NodesR(dr+1,nr-i));
1692 // add top nodes (last columns)
1693 for (i=dl+2; i<nbh-dr; i++)
1694 NodesC.SetValue(i-dl,nbv,uv_et[i-1].node);
1695 // add bottom nodes (first columns)
1696 for (i=2; i<nb; i++)
1697 NodesC.SetValue(i,1,uv_eb[i-1].node);
1699 // create and add needed nodes
1700 // add linear layers
1701 for (i=2; i<nb; i++) {
1702 double x0 = npt.Value(dl+i);
1704 for (j=1; j<nnn; j++) {
1705 double y0 = npl.Value(nbv-nnn+j);
1706 double y1 = npr.Value(nbv-nnn+j);
1707 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
1708 gp_Pnt P = S->Value(UV.X(),UV.Y());
1709 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1710 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1711 NodesC.SetValue(i,nbv-nnn+j,N);
1716 // add diagonal layers
1717 //cout<<"UVL.Length()="<<UVL.Length()<<" UVR.Length()="<<UVR.Length()<<endl;
1718 //cout<<"Dump UVL:"<<endl;
1719 //for (i=1; i<=UVL.Length(); i++) {
1720 // cout<<" ("<<UVL.Value(i).X()<<","<<UVL.Value(i).Y()<<")";
1723 gp_UV A2 = UVR.Value(nbv-nnn);
1724 gp_UV A3 = UVL.Value(nbv-nnn);
1725 for (i=1; i<nbv-nnn; i++) {
1726 gp_UV p1 = UVR.Value(i);
1727 gp_UV p3 = UVL.Value(i);
1728 double y = i / double(nbv-nnn);
1729 for (j=2; j<nb; j++) {
1730 double x = npb.Value(j);
1731 gp_UV p0( uv_eb[j-1].u, uv_eb[j-1].v );
1732 gp_UV p2 = UVT.Value( j-1 );
1733 gp_UV UV = CalcUV(x, y, a0, a1, A2, A3, p0,p1,p2,p3 );
1734 gp_Pnt P = S->Value(UV.X(),UV.Y());
1735 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1736 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(),UV.Y());
1737 NodesC.SetValue(j,i+1,N);
1741 for (i=1; i<nb; i++) {
1742 for (j=1; j<nbv; j++) {
1745 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1746 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1747 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1751 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1752 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1753 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1759 else { // New version (!OldVersion)
1760 // step1: create faces for bottom rectangle domain
1761 StdMeshers_Array2OfNode NodesBRD(1,nb,1,nnn-1);
1762 // fill UVL and UVR using c2d
1763 for (j=0; j<nb; j++) {
1764 NodesBRD.SetValue(j+1,1,uv_eb[j].node);
1766 for (i=1; i<nnn-1; i++) {
1767 NodesBRD.SetValue(1,i+1,uv_el[i].node);
1768 NodesBRD.SetValue(nb,i+1,uv_er[i].node);
1769 for (j=2; j<nb; j++) {
1770 double x = npb.Value(j);
1771 double y = (1-x) * npl.Value(i+1) + x * npr.Value(i+1);
1772 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1773 gp_Pnt P = S->Value(UV.X(),UV.Y());
1774 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1775 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(),UV.Y());
1776 NodesBRD.SetValue(j,i+1,N);
1779 for (j=1; j<nnn-1; j++) {
1780 for (i=1; i<nb; i++) {
1783 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i+1,j),
1784 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i,j+1));
1785 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1789 myTool->AddFace(NodesBRD.Value(i,j), NodesBRD.Value(i,j+1),
1790 NodesBRD.Value(i+1,j+1), NodesBRD.Value(i+1,j));
1791 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1795 int drl = abs(nr-nl);
1796 // create faces for region C
1797 StdMeshers_Array2OfNode NodesC(1,nb,1,drl+1+addv);
1798 // add nodes from previous region
1799 for (j=1; j<=nb; j++) {
1800 NodesC.SetValue(j,1,NodesBRD.Value(j,nnn-1));
1802 if ((drl+addv) > 0) {
1807 TColgp_SequenceOfXY UVtmp;
1808 double drparam = npr.Value(nr) - npr.Value(nnn-1);
1809 double dlparam = npl.Value(nnn) - npl.Value(nnn-1);
1811 for (i=1; i<=drl; i++) {
1812 // add existed nodes from right edge
1813 NodesC.SetValue(nb,i+1,uv_er[nnn+i-2].node);
1814 //double dtparam = npt.Value(i+1);
1815 y1 = npr.Value(nnn+i-1); // param on right edge
1816 double dpar = (y1 - npr.Value(nnn-1))/drparam;
1817 y0 = npl.Value(nnn-1) + dpar*dlparam; // param on left edge
1818 double dy = y1 - y0;
1819 for (j=1; j<nb; j++) {
1820 double x = npt.Value(i+1) + npb.Value(j)*(1-npt.Value(i+1));
1821 double y = y0 + dy*x;
1822 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1823 gp_Pnt P = S->Value(UV.X(),UV.Y());
1824 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1825 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1826 NodesC.SetValue(j,i+1,N);
1829 double dy0 = (1-y0)/(addv+1);
1830 double dy1 = (1-y1)/(addv+1);
1831 for (i=1; i<=addv; i++) {
1832 double yy0 = y0 + dy0*i;
1833 double yy1 = y1 + dy1*i;
1834 double dyy = yy1 - yy0;
1835 for (j=1; j<=nb; j++) {
1836 double x = npt.Value(i+1+drl) +
1837 npb.Value(j) * (npt.Value(nt-i) - npt.Value(i+1+drl));
1838 double y = yy0 + dyy*x;
1839 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1840 gp_Pnt P = S->Value(UV.X(),UV.Y());
1841 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1842 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1843 NodesC.SetValue(j,i+drl+1,N);
1850 TColgp_SequenceOfXY UVtmp;
1851 double dlparam = npl.Value(nl) - npl.Value(nnn-1);
1852 double drparam = npr.Value(nnn) - npr.Value(nnn-1);
1853 double y0 = npl.Value(nnn-1);
1854 double y1 = npr.Value(nnn-1);
1855 for (i=1; i<=drl; i++) {
1856 // add existed nodes from right edge
1857 NodesC.SetValue(1,i+1,uv_el[nnn+i-2].node);
1858 y0 = npl.Value(nnn+i-1); // param on left edge
1859 double dpar = (y0 - npl.Value(nnn-1))/dlparam;
1860 y1 = npr.Value(nnn-1) + dpar*drparam; // param on right edge
1861 double dy = y1 - y0;
1862 for (j=2; j<=nb; j++) {
1863 double x = npb.Value(j)*npt.Value(nt-i);
1864 double y = y0 + dy*x;
1865 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1866 gp_Pnt P = S->Value(UV.X(),UV.Y());
1867 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1868 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1869 NodesC.SetValue(j,i+1,N);
1872 double dy0 = (1-y0)/(addv+1);
1873 double dy1 = (1-y1)/(addv+1);
1874 for (i=1; i<=addv; i++) {
1875 double yy0 = y0 + dy0*i;
1876 double yy1 = y1 + dy1*i;
1877 double dyy = yy1 - yy0;
1878 for (j=1; j<=nb; j++) {
1879 double x = npt.Value(i+1) +
1880 npb.Value(j) * (npt.Value(nt-i-drl) - npt.Value(i+1));
1881 double y = yy0 + dyy*x;
1882 gp_UV UV = CalcUV2(x, y, quad, a0, a1, a2, a3);
1883 gp_Pnt P = S->Value(UV.X(),UV.Y());
1884 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
1885 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
1886 NodesC.SetValue(j,i+drl+1,N);
1891 for (j=1; j<=drl+addv; j++) {
1892 for (i=1; i<nb; i++) {
1895 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
1896 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
1897 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1901 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i,j+1),
1902 NodesC.Value(i+1,j+1), NodesC.Value(i+1,j));
1903 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1908 StdMeshers_Array2OfNode NodesLast(1,nt,1,2);
1909 for (i=1; i<=nt; i++) {
1910 NodesLast.SetValue(i,2,uv_et[i-1].node);
1913 for (i=n1; i<drl+addv+1; i++) {
1915 NodesLast.SetValue(nnn,1,NodesC.Value(1,i));
1917 for (i=1; i<=nb; i++) {
1919 NodesLast.SetValue(nnn,1,NodesC.Value(i,drl+addv+1));
1921 for (i=drl+addv; i>=n2; i--) {
1923 NodesLast.SetValue(nnn,1,NodesC.Value(nb,i));
1925 for (i=1; i<nt; i++) {
1928 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i+1,1),
1929 NodesLast.Value(i+1,2), NodesLast.Value(i,2));
1930 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1934 myTool->AddFace(NodesLast.Value(i,1), NodesLast.Value(i,2),
1935 NodesLast.Value(i+1,2), NodesLast.Value(i+1,2));
1936 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
1939 } // if ((drl+addv) > 0)
1941 } // end new version implementation
1948 //=======================================================================
1950 * Evaluate only quandrangle faces
1952 //=======================================================================
1954 bool StdMeshers_Quadrangle_2D::EvaluateQuadPref(SMESH_Mesh & aMesh,
1955 const TopoDS_Shape& aShape,
1956 std::vector<int>& aNbNodes,
1957 MapShapeNbElems& aResMap,
1960 // Auxilary key in order to keep old variant
1961 // of meshing after implementation new variant
1962 // for bug 0016220 from Mantis.
1963 bool OldVersion = false;
1964 if (myQuadType == QUAD_QUADRANGLE_PREF_REVERSED)
1967 const TopoDS_Face& F = TopoDS::Face(aShape);
1968 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
1970 int nb = aNbNodes[0];
1971 int nr = aNbNodes[1];
1972 int nt = aNbNodes[2];
1973 int nl = aNbNodes[3];
1974 int dh = abs(nb-nt);
1975 int dv = abs(nr-nl);
1979 // it is a base case => not shift
1982 // we have to shift on 2
1991 // we have to shift quad on 1
1998 // we have to shift quad on 3
2008 int nbh = Max(nb,nt);
2009 int nbv = Max(nr,nl);
2024 // add some params to right and left after the first param
2031 int nnn = Min(nr,nl);
2036 // step1: create faces for left domain
2038 nbNodes += dl*(nl-1);
2039 nbFaces += dl*(nl-1);
2041 // step2: create faces for right domain
2043 nbNodes += dr*(nr-1);
2044 nbFaces += dr*(nr-1);
2046 // step3: create faces for central domain
2047 nbNodes += (nb-2)*(nnn-1) + (nbv-nnn-1)*(nb-2);
2048 nbFaces += (nb-1)*(nbv-1);
2050 else { // New version (!OldVersion)
2051 nbNodes += (nnn-2)*(nb-2);
2052 nbFaces += (nnn-2)*(nb-1);
2053 int drl = abs(nr-nl);
2054 nbNodes += drl*(nb-1) + addv*nb;
2055 nbFaces += (drl+addv)*(nb-1) + (nt-1);
2056 } // end new version implementation
2058 std::vector<int> aVec(SMDSEntity_Last);
2059 for (int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
2061 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces;
2062 aVec[SMDSEntity_Node] = nbNodes + nbFaces*4;
2063 if (aNbNodes.size()==5) {
2064 aVec[SMDSEntity_Quad_Triangle] = aNbNodes[3] - 1;
2065 aVec[SMDSEntity_Quad_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2069 aVec[SMDSEntity_Node] = nbNodes;
2070 aVec[SMDSEntity_Quadrangle] = nbFaces;
2071 if (aNbNodes.size()==5) {
2072 aVec[SMDSEntity_Triangle] = aNbNodes[3] - 1;
2073 aVec[SMDSEntity_Quadrangle] = nbFaces - aNbNodes[3] + 1;
2076 SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
2077 aResMap.insert(std::make_pair(sm,aVec));
2083 //=============================================================================
2084 /*! Split quadrangle in to 2 triangles by smallest diagonal
2087 //=============================================================================
2088 void StdMeshers_Quadrangle_2D::SplitQuad(SMESHDS_Mesh *theMeshDS,
2090 const SMDS_MeshNode* theNode1,
2091 const SMDS_MeshNode* theNode2,
2092 const SMDS_MeshNode* theNode3,
2093 const SMDS_MeshNode* theNode4)
2095 gp_Pnt a(theNode1->X(),theNode1->Y(),theNode1->Z());
2096 gp_Pnt b(theNode2->X(),theNode2->Y(),theNode2->Z());
2097 gp_Pnt c(theNode3->X(),theNode3->Y(),theNode3->Z());
2098 gp_Pnt d(theNode4->X(),theNode4->Y(),theNode4->Z());
2099 SMDS_MeshFace* face;
2100 if (a.Distance(c) > b.Distance(d)){
2101 face = myTool->AddFace(theNode2, theNode4 , theNode1);
2102 if (face) theMeshDS->SetMeshElementOnShape(face, theFaceID);
2103 face = myTool->AddFace(theNode2, theNode3, theNode4);
2104 if (face) theMeshDS->SetMeshElementOnShape(face, theFaceID);
2108 face = myTool->AddFace(theNode1, theNode2 ,theNode3);
2109 if (face) theMeshDS->SetMeshElementOnShape(face, theFaceID);
2110 face = myTool->AddFace(theNode1, theNode3, theNode4);
2111 if (face) theMeshDS->SetMeshElementOnShape(face, theFaceID);
2115 //=======================================================================
2117 * Implementation of Reduced algorithm (meshing with quadrangles only)
2119 //=======================================================================
2120 bool StdMeshers_Quadrangle_2D::ComputeReduced (SMESH_Mesh & aMesh,
2121 const TopoDS_Shape& aShape,
2122 FaceQuadStruct* quad)
2124 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
2125 const TopoDS_Face& F = TopoDS::Face(aShape);
2126 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
2127 int i,j,geomFaceID = meshDS->ShapeToIndex(F);
2129 int nb = quad->side[0]->NbPoints();
2130 int nr = quad->side[1]->NbPoints();
2131 int nt = quad->side[2]->NbPoints();
2132 int nl = quad->side[3]->NbPoints();
2134 // Simple Reduce 8->6->4->2 (3 steps) Multiple Reduce 8->2 (1 step)
2136 // .-----.-----.-----.-----. .-----.-----.-----.-----.
2137 // | / \ | / \ | | / \ | / \ |
2138 // | / .--.--. \ | | / \ | / \ |
2139 // | / / | \ \ | | / .----.----. \ |
2140 // .---.---.---.---.---.---. | / / \ | / \ \ |
2141 // | / / \ | / \ \ | | / / \ | / \ \ |
2142 // | / / .-.-. \ \ | | / / .---.---. \ \ |
2143 // | / / / | \ \ \ | | / / / \ | / \ \ \ |
2144 // .--.--.--.--.--.--.--.--. | / / / \ | / \ \ \ |
2145 // | / / / \ | / \ \ \ | | / / / .-.-. \ \ \ |
2146 // | / / / .-.-. \ \ \ | | / / / / | \ \ \ \ |
2147 // | / / / / | \ \ \ \ | | / / / / | \ \ \ \ |
2148 // .-.-.-.--.--.--.--.-.-.-. .-.-.-.--.--.--.--.-.-.-.
2150 bool MultipleReduce = false;
2163 else if (nb == nt) {
2164 nl1 = nb; // and == nt
2165 nr1 = nb; // and == nt
2179 // number of rows and columns
2180 int nrows = nr1 - 1; // and also == nl1 - 1
2181 int ncol_top = nt1 - 1;
2182 int ncol_bot = nb1 - 1;
2183 int npair_top = ncol_top / 2;
2184 // maximum number of bottom elements for "linear" simple reduce
2185 //int max_lin = ncol_top + npair_top * 2 * nrows;
2186 // maximum number of bottom elements for "tree" simple reduce
2187 int max_tree = npair_top * pow(2.0, nrows + 1);
2188 if (ncol_top > npair_top * 2) {
2189 int delta = ncol_bot - max_tree;
2190 for (int irow = 1; irow < nrows; irow++) {
2191 int nfour = delta / 4;
2194 if (delta <= (ncol_top - npair_top * 2))
2195 max_tree = ncol_bot;
2198 if (ncol_bot > max_tree)
2199 MultipleReduce = true;
2202 if (MultipleReduce) { // == ComputeQuadPref QUAD_QUADRANGLE_PREF_REVERSED
2203 //==================================================
2204 int dh = abs(nb-nt);
2205 int dv = abs(nr-nl);
2209 // it is a base case => not shift quad but may be replacement is need
2210 ShiftQuad(quad,0,true);
2213 // we have to shift quad on 2
2214 ShiftQuad(quad,2,true);
2219 // we have to shift quad on 1
2220 ShiftQuad(quad,1,true);
2223 // we have to shift quad on 3
2224 ShiftQuad(quad,3,true);
2228 nb = quad->side[0]->NbPoints();
2229 nr = quad->side[1]->NbPoints();
2230 nt = quad->side[2]->NbPoints();
2231 nl = quad->side[3]->NbPoints();
2234 int nbh = Max(nb,nt);
2235 int nbv = Max(nr,nl);
2248 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
2249 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
2250 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
2251 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
2253 if (uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl)
2254 return error(COMPERR_BAD_INPUT_MESH);
2256 // arrays for normalized params
2257 TColStd_SequenceOfReal npb, npr, npt, npl;
2258 for (j = 0; j < nb; j++) {
2259 npb.Append(uv_eb[j].normParam);
2261 for (i = 0; i < nr; i++) {
2262 npr.Append(uv_er[i].normParam);
2264 for (j = 0; j < nt; j++) {
2265 npt.Append(uv_et[j].normParam);
2267 for (i = 0; i < nl; i++) {
2268 npl.Append(uv_el[i].normParam);
2272 // orientation of face and 3 main domain for future faces
2278 // left | | | | rigth
2285 // add some params to right and left after the first param
2288 double dpr = (npr.Value(2) - npr.Value(1))/(dr+1);
2289 for (i=1; i<=dr; i++) {
2290 npr.InsertAfter(1,npr.Value(2)-dpr);
2294 dpr = (npl.Value(2) - npl.Value(1))/(dl+1);
2295 for (i=1; i<=dl; i++) {
2296 npl.InsertAfter(1,npl.Value(2)-dpr);
2299 gp_XY a0 (uv_eb.front().u, uv_eb.front().v);
2300 gp_XY a1 (uv_eb.back().u, uv_eb.back().v);
2301 gp_XY a2 (uv_et.back().u, uv_et.back().v);
2302 gp_XY a3 (uv_et.front().u, uv_et.front().v);
2304 int nnn = Min(nr,nl);
2305 // auxilary sequence of XY for creation nodes
2306 // in the bottom part of central domain
2307 // it's length must be == nbv-nnn-1
2308 TColgp_SequenceOfXY UVL;
2309 TColgp_SequenceOfXY UVR;
2310 //==================================================
2312 // step1: create faces for left domain
2313 StdMeshers_Array2OfNode NodesL(1,dl+1,1,nl);
2315 for (j=1; j<=nl; j++)
2316 NodesL.SetValue(1,j,uv_el[j-1].node);
2319 for (i=1; i<=dl; i++)
2320 NodesL.SetValue(i+1,nl,uv_et[i].node);
2321 // create and add needed nodes
2322 TColgp_SequenceOfXY UVtmp;
2323 for (i=1; i<=dl; i++) {
2324 double x0 = npt.Value(i+1);
2327 double y0 = npl.Value(i+1);
2328 double y1 = npr.Value(i+1);
2329 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
2330 gp_Pnt P = S->Value(UV.X(),UV.Y());
2331 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2332 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
2333 NodesL.SetValue(i+1,1,N);
2334 if (UVL.Length()<nbv-nnn-1) UVL.Append(UV);
2336 for (j=2; j<nl; j++) {
2337 double y0 = npl.Value(dl+j);
2338 double y1 = npr.Value(dl+j);
2339 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
2340 gp_Pnt P = S->Value(UV.X(),UV.Y());
2341 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2342 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
2343 NodesL.SetValue(i+1,j,N);
2344 if (i==dl) UVtmp.Append(UV);
2347 for (i=1; i<=UVtmp.Length() && UVL.Length()<nbv-nnn-1; i++) {
2348 UVL.Append(UVtmp.Value(i));
2351 for (i=1; i<=dl; i++) {
2352 for (j=1; j<nl; j++) {
2354 myTool->AddFace(NodesL.Value(i,j), NodesL.Value(i+1,j),
2355 NodesL.Value(i+1,j+1), NodesL.Value(i,j+1));
2356 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
2361 // fill UVL using c2d
2362 for (i=1; i<npl.Length() && UVL.Length()<nbv-nnn-1; i++) {
2363 UVL.Append(gp_UV (uv_el[i].u, uv_el[i].v));
2367 // step2: create faces for right domain
2368 StdMeshers_Array2OfNode NodesR(1,dr+1,1,nr);
2370 for (j=1; j<=nr; j++)
2371 NodesR.SetValue(1,j,uv_er[nr-j].node);
2374 for (i=1; i<=dr; i++)
2375 NodesR.SetValue(i+1,1,uv_et[nt-1-i].node);
2376 // create and add needed nodes
2377 TColgp_SequenceOfXY UVtmp;
2378 for (i=1; i<=dr; i++) {
2379 double x0 = npt.Value(nt-i);
2382 double y0 = npl.Value(i+1);
2383 double y1 = npr.Value(i+1);
2384 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
2385 gp_Pnt P = S->Value(UV.X(),UV.Y());
2386 SMDS_MeshNode * N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2387 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
2388 NodesR.SetValue(i+1,nr,N);
2389 if (UVR.Length()<nbv-nnn-1) UVR.Append(UV);
2391 for (j=2; j<nr; j++) {
2392 double y0 = npl.Value(nbv-j+1);
2393 double y1 = npr.Value(nbv-j+1);
2394 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
2395 gp_Pnt P = S->Value(UV.X(),UV.Y());
2396 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2397 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
2398 NodesR.SetValue(i+1,j,N);
2399 if (i==dr) UVtmp.Prepend(UV);
2402 for (i=1; i<=UVtmp.Length() && UVR.Length()<nbv-nnn-1; i++) {
2403 UVR.Append(UVtmp.Value(i));
2406 for (i=1; i<=dr; i++) {
2407 for (j=1; j<nr; j++) {
2409 myTool->AddFace(NodesR.Value(i,j), NodesR.Value(i+1,j),
2410 NodesR.Value(i+1,j+1), NodesR.Value(i,j+1));
2411 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
2416 // fill UVR using c2d
2417 for (i=1; i<npr.Length() && UVR.Length()<nbv-nnn-1; i++) {
2418 UVR.Append(gp_UV(uv_er[i].u, uv_er[i].v));
2422 // step3: create faces for central domain
2423 StdMeshers_Array2OfNode NodesC(1,nb,1,nbv);
2424 // add first line using NodesL
2425 for (i=1; i<=dl+1; i++)
2426 NodesC.SetValue(1,i,NodesL(i,1));
2427 for (i=2; i<=nl; i++)
2428 NodesC.SetValue(1,dl+i,NodesL(dl+1,i));
2429 // add last line using NodesR
2430 for (i=1; i<=dr+1; i++)
2431 NodesC.SetValue(nb,i,NodesR(i,nr));
2432 for (i=1; i<nr; i++)
2433 NodesC.SetValue(nb,dr+i+1,NodesR(dr+1,nr-i));
2434 // add top nodes (last columns)
2435 for (i=dl+2; i<nbh-dr; i++)
2436 NodesC.SetValue(i-dl,nbv,uv_et[i-1].node);
2437 // add bottom nodes (first columns)
2438 for (i=2; i<nb; i++)
2439 NodesC.SetValue(i,1,uv_eb[i-1].node);
2441 // create and add needed nodes
2442 // add linear layers
2443 for (i=2; i<nb; i++) {
2444 double x0 = npt.Value(dl+i);
2446 for (j=1; j<nnn; j++) {
2447 double y0 = npl.Value(nbv-nnn+j);
2448 double y1 = npr.Value(nbv-nnn+j);
2449 gp_UV UV = CalcUV(x0, x1, y0, y1, quad, a0, a1, a2, a3);
2450 gp_Pnt P = S->Value(UV.X(),UV.Y());
2451 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2452 meshDS->SetNodeOnFace(N, geomFaceID, UV.X(), UV.Y());
2453 NodesC.SetValue(i,nbv-nnn+j,N);
2456 // add diagonal layers
2457 for (i=1; i<nbv-nnn; i++) {
2458 double du = UVR.Value(i).X() - UVL.Value(i).X();
2459 double dv = UVR.Value(i).Y() - UVL.Value(i).Y();
2460 for (j=2; j<nb; j++) {
2461 double u = UVL.Value(i).X() + du*npb.Value(j);
2462 double v = UVL.Value(i).Y() + dv*npb.Value(j);
2463 gp_Pnt P = S->Value(u,v);
2464 SMDS_MeshNode* N = meshDS->AddNode(P.X(), P.Y(), P.Z());
2465 meshDS->SetNodeOnFace(N, geomFaceID, u, v);
2466 NodesC.SetValue(j,i+1,N);
2470 for (i=1; i<nb; i++) {
2471 for (j=1; j<nbv; j++) {
2473 myTool->AddFace(NodesC.Value(i,j), NodesC.Value(i+1,j),
2474 NodesC.Value(i+1,j+1), NodesC.Value(i,j+1));
2475 if (F) meshDS->SetMeshElementOnShape(F, geomFaceID);
2479 } // end Multiple Reduce implementation
2480 else { // Simple Reduce (!MultipleReduce)
2481 //=========================================================
2484 // it is a base case => not shift quad
2485 //ShiftQuad(quad,0,true);
2488 // we have to shift quad on 2
2489 ShiftQuad(quad,2,true);
2494 // we have to shift quad on 1
2495 ShiftQuad(quad,1,true);
2498 // we have to shift quad on 3
2499 ShiftQuad(quad,3,true);
2503 nb = quad->side[0]->NbPoints();
2504 nr = quad->side[1]->NbPoints();
2505 nt = quad->side[2]->NbPoints();
2506 nl = quad->side[3]->NbPoints();
2508 // number of rows and columns
2509 int nrows = nr - 1; // and also == nl - 1
2510 int ncol_top = nt - 1;
2511 int ncol_bot = nb - 1;
2512 int npair_top = ncol_top / 2;
2513 // maximum number of bottom elements for "linear" simple reduce
2514 int max_lin = ncol_top + npair_top * 2 * nrows;
2515 // maximum number of bottom elements for "tree" simple reduce
2516 //int max_tree = npair_top * pow(2, nrows + 1);
2518 //if (ncol_bot > max_tree)
2519 // MultipleReduce = true;
2521 const vector<UVPtStruct>& uv_eb = quad->side[0]->GetUVPtStruct(true,0);
2522 const vector<UVPtStruct>& uv_er = quad->side[1]->GetUVPtStruct(false,1);
2523 const vector<UVPtStruct>& uv_et = quad->side[2]->GetUVPtStruct(true,1);
2524 const vector<UVPtStruct>& uv_el = quad->side[3]->GetUVPtStruct(false,0);
2526 if (uv_eb.size() != nb || uv_er.size() != nr || uv_et.size() != nt || uv_el.size() != nl)
2527 return error(COMPERR_BAD_INPUT_MESH);
2529 // arrays for normalized params
2530 TColStd_SequenceOfReal npb, npr, npt, npl;
2531 for (j = 0; j < nb; j++) {
2532 npb.Append(uv_eb[j].normParam);
2534 for (i = 0; i < nr; i++) {
2535 npr.Append(uv_er[i].normParam);
2537 for (j = 0; j < nt; j++) {
2538 npt.Append(uv_et[j].normParam);
2540 for (i = 0; i < nl; i++) {
2541 npl.Append(uv_el[i].normParam);
2544 // We will ajust new points to this grid
2545 if (!SetNormalizedGrid(aMesh, aShape, quad))
2549 gp_XY a0 (uv_eb.front().u, uv_eb.front().v);
2550 gp_XY a1 (uv_eb.back().u, uv_eb.back().v);
2551 gp_XY a2 (uv_et.back().u, uv_et.back().v);
2552 gp_XY a3 (uv_et.front().u, uv_et.front().v);
2553 //=========================================================
2555 TColStd_SequenceOfInteger curr_base, next_base;
2556 TColStd_SequenceOfReal curr_par_u, curr_par_v;
2557 TColStd_SequenceOfReal next_par_u, next_par_v;
2558 StdMeshers_Array2OfNode NodesBRD (1,nb, 1,nr);
2559 for (j = 1; j <= nb; j++) {
2560 NodesBRD.SetValue(j, 1, uv_eb[j - 1].node); // bottom
2561 curr_base.Append(j);
2562 next_base.Append(-1);
2563 curr_par_u.Append(uv_eb[j-1].u);
2564 curr_par_v.Append(uv_eb[j-1].v);
2565 next_par_u.Append(0.);
2566 next_par_v.Append(0.);
2568 for (j = 1; j <= nt; j++) {
2569 NodesBRD.SetValue(j, nr, uv_et[j - 1].node); // top
2572 int curr_base_len = nb;
2573 int next_base_len = 0;
2575 if (ncol_bot > max_lin) {
2576 // "tree" simple reduce 2->4->8->16->32->...
2578 // .---------------.---------------.---------------.---------------. nr
2579 // | \ | / | \ | / |
2580 // | \ .-------.-------. / | \ .-------.-------. / |
2581 // | | | | | | | | |
2582 // .-------.-------.-------.-------.-------.-------.-------.-------.
2583 // |\ | /|\ | /|\ | /|\ | /|
2584 // | \.---.---./ | \.---.---./ | \.---.---./ | \.---.---./ | i
2585 // | | | | | | | | | | | | | | | | |
2586 // .---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.
2587 // |\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|
2588 // | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. | .-.-. |
2589 // | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
2590 // .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-. 1
2593 for (i = 1; i < nr; i++) { // layer by layer
2595 NodesBRD.SetValue(1, i+1, uv_el[i].node);
2596 next_base.SetValue(++next_base_len, 1);
2598 NodesBRD.SetValue(nb, i+1, uv_er[i].node);
2600 next_par_u.SetValue(next_base_len, uv_el[i].u);
2601 next_par_v.SetValue(next_base_len, uv_el[i].v);
2603 // to stop reducing, if number of nodes reaches nt
2604 int delta = curr_base_len - nt;
2606 //double du = uv_er[i].u - uv_el[i].u;
2607 //double dv = uv_er[i].v - uv_el[i].v;
2609 // to calculate normalized parameter, we must know number of points in next layer
2610 int nb_four = (curr_base_len - 1) / 4;
2611 int nb_next = nb_four*2 + (curr_base_len - nb_four*4);
2612 if (nb_next < nt) nb_next = nt;
2614 for (j = 1; j + 4 <= curr_base_len && delta > 0; j += 4, delta -= 2) {
2615 // add one "HH": nodes a,b,c,d,e and faces 1,2,3,4,5,6
2617 // .-----a-----b i + 1
2630 const SMDS_MeshNode* Na;
2632 next_base.SetValue(next_base_len, curr_base.Value(j + 2));
2633 if (i + 1 == nr) { // top
2634 Na = uv_et[next_base_len - 1].node;
2635 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na);
2636 u = uv_et[next_base_len - 1].u;
2637 v = uv_et[next_base_len - 1].v;
2640 //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
2641 //u = uv_el[i].u + du * norm_par;
2642 //v = uv_el[i].v + dv * norm_par;
2644 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
2645 int nearest_node_j = (int)rel;
2646 rel -= nearest_node_j;
2647 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
2648 double u1 = quad->uv_grid[ij].u;
2649 double v1 = quad->uv_grid[ij].v;
2650 double u2 = quad->uv_grid[ij + 1].u;
2651 double v2 = quad->uv_grid[ij + 1].v;
2652 double duj = (u2 - u1) * rel;
2653 double dvj = (v2 - v1) * rel;
2657 //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 2));
2658 //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 2));
2659 gp_Pnt P = S->Value(u,v);
2660 SMDS_MeshNode* Na1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
2661 meshDS->SetNodeOnFace(Na1, geomFaceID, u, v);
2662 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na1);
2665 next_par_u.SetValue(next_base_len, u);
2666 next_par_v.SetValue(next_base_len, v);
2669 const SMDS_MeshNode* Nb;
2671 next_base.SetValue(next_base_len, curr_base.Value(j + 4));
2672 if (i + 1 == nr) { // top
2673 Nb = uv_et[next_base_len - 1].node;
2674 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb);
2675 u = uv_et[next_base_len - 1].u;
2676 v = uv_et[next_base_len - 1].v;
2678 else if (j + 4 == curr_base_len) { // right
2679 Nb = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
2684 //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
2685 //u = uv_el[i].u + du * norm_par;
2686 //v = uv_el[i].v + dv * norm_par;
2688 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
2689 int nearest_node_j = (int)rel;
2690 rel -= nearest_node_j;
2691 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
2692 double u1 = quad->uv_grid[ij].u;
2693 double v1 = quad->uv_grid[ij].v;
2694 double u2 = quad->uv_grid[ij + 1].u;
2695 double v2 = quad->uv_grid[ij + 1].v;
2696 double duj = (u2 - u1) * rel;
2697 double dvj = (v2 - v1) * rel;
2701 //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 4));
2702 //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 4));
2703 gp_Pnt P = S->Value(u,v);
2704 SMDS_MeshNode* Nb1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
2705 meshDS->SetNodeOnFace(Nb1, geomFaceID, u, v);
2706 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb1);
2709 next_par_u.SetValue(next_base_len, u);
2710 next_par_v.SetValue(next_base_len, v);
2713 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 2)) / 2.0;
2714 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 2)) / 2.0;
2715 gp_Pnt P = S->Value(u,v);
2716 SMDS_MeshNode* Nc = meshDS->AddNode(P.X(), P.Y(), P.Z());
2717 meshDS->SetNodeOnFace(Nc, geomFaceID, u, v);
2720 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 1)) / 2.0;
2721 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 1)) / 2.0;
2723 SMDS_MeshNode* Nd = meshDS->AddNode(P.X(), P.Y(), P.Z());
2724 meshDS->SetNodeOnFace(Nd, geomFaceID, u, v);
2727 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len)) / 2.0;
2728 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len)) / 2.0;
2730 SMDS_MeshNode* Ne = meshDS->AddNode(P.X(), P.Y(), P.Z());
2731 meshDS->SetNodeOnFace(Ne, geomFaceID, u, v);
2734 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 0), i),
2735 NodesBRD.Value(curr_base.Value(j + 1), i),
2737 NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
2738 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
2740 SMDS_MeshFace* F2 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 1), i),
2741 NodesBRD.Value(curr_base.Value(j + 2), i),
2743 if (F2) meshDS->SetMeshElementOnShape(F2, geomFaceID);
2745 SMDS_MeshFace* F3 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 2), i),
2746 NodesBRD.Value(curr_base.Value(j + 3), i),
2748 if (F3) meshDS->SetMeshElementOnShape(F3, geomFaceID);
2750 SMDS_MeshFace* F4 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 3), i),
2751 NodesBRD.Value(curr_base.Value(j + 4), i),
2753 if (F4) meshDS->SetMeshElementOnShape(F4, geomFaceID);
2755 SMDS_MeshFace* F5 = myTool->AddFace(Nc, Nd, Na,
2756 NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
2757 if (F5) meshDS->SetMeshElementOnShape(F5, geomFaceID);
2759 SMDS_MeshFace* F6 = myTool->AddFace(Nd, Ne, Nb, Na);
2760 if (F6) meshDS->SetMeshElementOnShape(F6, geomFaceID);
2763 // not reduced side elements (if any)
2764 for (; j < curr_base_len; j++) {
2766 const SMDS_MeshNode* Nf;
2768 next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
2769 if (i + 1 == nr) { // top
2770 Nf = uv_et[next_base_len - 1].node;
2771 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
2772 u = uv_et[next_base_len - 1].u;
2773 v = uv_et[next_base_len - 1].v;
2775 else if (j + 1 == curr_base_len) { // right
2776 Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
2781 //double norm_par = double(next_base_len - 1)/double(nb_next - 1);
2782 //u = uv_el[i].u + du * norm_par;
2783 //v = uv_el[i].v + dv * norm_par;
2785 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
2786 int nearest_node_j = (int)rel;
2787 rel -= nearest_node_j;
2788 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
2789 double u1 = quad->uv_grid[ij].u;
2790 double v1 = quad->uv_grid[ij].v;
2791 double u2 = quad->uv_grid[ij + 1].u;
2792 double v2 = quad->uv_grid[ij + 1].v;
2793 double duj = (u2 - u1) * rel;
2794 double dvj = (v2 - v1) * rel;
2798 //u = uv_el[i].u + du*npb.Value(curr_base.Value(j + 1));
2799 //v = uv_el[i].v + dv*npb.Value(curr_base.Value(j + 1));
2800 gp_Pnt P = S->Value(u,v);
2801 SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
2802 meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
2803 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
2806 next_par_u.SetValue(next_base_len, u);
2807 next_par_v.SetValue(next_base_len, v);
2808 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
2809 NodesBRD.Value(curr_base.Value(j + 1), i),
2810 NodesBRD.Value(next_base.Value(next_base_len), i + 1),
2811 NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
2812 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
2815 curr_base_len = next_base_len;
2816 curr_base = next_base;
2817 curr_par_u = next_par_u;
2818 curr_par_v = next_par_v;
2821 } // end "tree" simple reduce
2823 // "linear" simple reduce 4->8->12->16 (3 steps)
2825 // .---------------.---------------.---------------.---------------. nr
2826 // | \ | / | \ | / |
2827 // | \ .-------.-------. / | \ .-------.-------. / |
2828 // | | | | | | | | |
2829 // .-------.-------.-------.-------.-------.-------.-------.-------.
2830 // | / \ | / \ | / \ | / \ |
2831 // | / \.----.----./ \ | / \.----.----./ \ | i
2832 // | / | | | \ | / | | | \ |
2833 // .-----.----.----.----.----.-----.-----.----.----.----.----.-----.
2834 // | / / \ | / \ \ | / / \ | / \ \ |
2835 // | / / .-.-. \ \ | / / .-.-. \ \ |
2836 // | / / / | \ \ \ | / / / | \ \ \ |
2837 // .---.---.---.---.---.---.---.---.---.---.---.---.---.---.---.---. 1
2840 // nt = 5, nb = 7, nr = 4
2841 //int delta_all = 2;
2842 //int delta_one_col = 6;
2844 //int remainder = 2;
2845 //if (remainder > 0) nb_col++;
2847 //int free_left = 1;
2849 //int free_middle = 4;
2851 int delta_all = nb - nt;
2852 int delta_one_col = (nr - 1) * 2;
2853 int nb_col = delta_all / delta_one_col;
2854 int remainder = delta_all - nb_col * delta_one_col;
2855 if (remainder > 0) {
2858 int free_left = ((nt - 1) - nb_col * 2) / 2;
2859 free_left += nr - 2;
2860 int free_middle = (nr - 2) * 2;
2861 if (remainder > 0 && nb_col == 1) {
2862 int nb_rows_short_col = remainder / 2;
2863 int nb_rows_thrown = (nr - 1) - nb_rows_short_col;
2864 free_left -= nb_rows_thrown;
2867 // nt = 5, nb = 17, nr = 4
2868 //int delta_all = 12;
2869 //int delta_one_col = 6;
2871 //int remainder = 0;
2872 //int free_left = 2;
2873 //int free_middle = 4;
2875 for (i = 1; i < nr; i++, free_middle -= 2, free_left -= 1) { // layer by layer
2877 NodesBRD.SetValue(1, i+1, uv_el[i].node);
2878 next_base.SetValue(++next_base_len, 1);
2880 NodesBRD.SetValue(nb, i+1, uv_er[i].node);
2883 next_par_u.SetValue(next_base_len, uv_el[i].u);
2884 next_par_v.SetValue(next_base_len, uv_el[i].v);
2886 // to calculate normalized parameter, we must know number of points in next layer
2887 int nb_next = curr_base_len - nb_col * 2;
2888 if (remainder > 0 && i > remainder / 2)
2889 // take into account short "column"
2891 if (nb_next < nt) nb_next = nt;
2893 // not reduced left elements
2894 for (j = 1; j <= free_left; j++) {
2896 const SMDS_MeshNode* Nf;
2898 next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
2899 if (i + 1 == nr) { // top
2900 Nf = uv_et[next_base_len - 1].node;
2901 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
2902 u = uv_et[next_base_len - 1].u;
2903 v = uv_et[next_base_len - 1].v;
2907 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
2908 int nearest_node_j = (int)rel;
2909 rel -= nearest_node_j;
2910 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
2911 double u1 = quad->uv_grid[ij].u;
2912 double v1 = quad->uv_grid[ij].v;
2913 double u2 = quad->uv_grid[ij + 1].u;
2914 double v2 = quad->uv_grid[ij + 1].v;
2915 double duj = (u2 - u1) * rel;
2916 double dvj = (v2 - v1) * rel;
2920 gp_Pnt P = S->Value(u,v);
2921 SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
2922 meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
2923 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
2926 next_par_u.SetValue(next_base_len, u);
2927 next_par_v.SetValue(next_base_len, v);
2928 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
2929 NodesBRD.Value(curr_base.Value(j + 1), i),
2930 NodesBRD.Value(next_base.Value(next_base_len), i + 1),
2931 NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
2932 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
2935 for (int icol = 1; icol <= nb_col; icol++) {
2937 if (remainder > 0 && icol == nb_col && i > remainder / 2)
2938 // stop short "column"
2941 // add one "HH": nodes a,b,c,d,e and faces 1,2,3,4,5,6
2943 // .-----a-----b i + 1
2956 const SMDS_MeshNode* Na;
2958 next_base.SetValue(next_base_len, curr_base.Value(j + 2));
2959 if (i + 1 == nr) { // top
2960 Na = uv_et[next_base_len - 1].node;
2961 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na);
2962 u = uv_et[next_base_len - 1].u;
2963 v = uv_et[next_base_len - 1].v;
2967 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
2968 int nearest_node_j = (int)rel;
2969 rel -= nearest_node_j;
2970 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
2971 double u1 = quad->uv_grid[ij].u;
2972 double v1 = quad->uv_grid[ij].v;
2973 double u2 = quad->uv_grid[ij + 1].u;
2974 double v2 = quad->uv_grid[ij + 1].v;
2975 double duj = (u2 - u1) * rel;
2976 double dvj = (v2 - v1) * rel;
2980 gp_Pnt P = S->Value(u,v);
2981 SMDS_MeshNode* Na1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
2982 meshDS->SetNodeOnFace(Na1, geomFaceID, u, v);
2983 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Na1);
2986 next_par_u.SetValue(next_base_len, u);
2987 next_par_v.SetValue(next_base_len, v);
2990 const SMDS_MeshNode* Nb;
2992 next_base.SetValue(next_base_len, curr_base.Value(j + 4));
2993 if (i + 1 == nr) { // top
2994 Nb = uv_et[next_base_len - 1].node;
2995 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb);
2996 u = uv_et[next_base_len - 1].u;
2997 v = uv_et[next_base_len - 1].v;
2999 else if (j + 4 == curr_base_len) { // right
3000 Nb = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
3006 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
3007 int nearest_node_j = (int)rel;
3008 rel -= nearest_node_j;
3009 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
3010 double u1 = quad->uv_grid[ij].u;
3011 double v1 = quad->uv_grid[ij].v;
3012 double u2 = quad->uv_grid[ij + 1].u;
3013 double v2 = quad->uv_grid[ij + 1].v;
3014 double duj = (u2 - u1) * rel;
3015 double dvj = (v2 - v1) * rel;
3019 gp_Pnt P = S->Value(u,v);
3020 SMDS_MeshNode* Nb1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
3021 meshDS->SetNodeOnFace(Nb1, geomFaceID, u, v);
3022 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nb1);
3025 next_par_u.SetValue(next_base_len, u);
3026 next_par_v.SetValue(next_base_len, v);
3029 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 2)) / 2.0;
3030 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 2)) / 2.0;
3031 gp_Pnt P = S->Value(u,v);
3032 SMDS_MeshNode* Nc = meshDS->AddNode(P.X(), P.Y(), P.Z());
3033 meshDS->SetNodeOnFace(Nc, geomFaceID, u, v);
3036 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len - 1)) / 2.0;
3037 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len - 1)) / 2.0;
3039 SMDS_MeshNode* Nd = meshDS->AddNode(P.X(), P.Y(), P.Z());
3040 meshDS->SetNodeOnFace(Nd, geomFaceID, u, v);
3043 u = (curr_par_u.Value(j + 2) + next_par_u.Value(next_base_len)) / 2.0;
3044 v = (curr_par_v.Value(j + 2) + next_par_v.Value(next_base_len)) / 2.0;
3046 SMDS_MeshNode* Ne = meshDS->AddNode(P.X(), P.Y(), P.Z());
3047 meshDS->SetNodeOnFace(Ne, geomFaceID, u, v);
3050 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 0), i),
3051 NodesBRD.Value(curr_base.Value(j + 1), i),
3053 NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
3054 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
3056 SMDS_MeshFace* F2 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 1), i),
3057 NodesBRD.Value(curr_base.Value(j + 2), i),
3059 if (F2) meshDS->SetMeshElementOnShape(F2, geomFaceID);
3061 SMDS_MeshFace* F3 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 2), i),
3062 NodesBRD.Value(curr_base.Value(j + 3), i),
3064 if (F3) meshDS->SetMeshElementOnShape(F3, geomFaceID);
3066 SMDS_MeshFace* F4 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j + 3), i),
3067 NodesBRD.Value(curr_base.Value(j + 4), i),
3069 if (F4) meshDS->SetMeshElementOnShape(F4, geomFaceID);
3071 SMDS_MeshFace* F5 = myTool->AddFace(Nc, Nd, Na,
3072 NodesBRD.Value(next_base.Value(next_base_len - 2), i + 1));
3073 if (F5) meshDS->SetMeshElementOnShape(F5, geomFaceID);
3075 SMDS_MeshFace* F6 = myTool->AddFace(Nd, Ne, Nb, Na);
3076 if (F6) meshDS->SetMeshElementOnShape(F6, geomFaceID);
3080 // not reduced middle elements
3081 if (icol < nb_col) {
3082 if (remainder > 0 && icol == nb_col - 1 && i > remainder / 2)
3083 // pass middle elements before stopped short "column"
3086 int free_add = free_middle;
3087 if (remainder > 0 && icol == nb_col - 1)
3088 // next "column" is short
3089 free_add -= (nr - 1) - (remainder / 2);
3091 for (int imiddle = 1; imiddle <= free_add; imiddle++) {
3092 // f (i + 1, j + imiddle)
3093 const SMDS_MeshNode* Nf;
3095 next_base.SetValue(++next_base_len, curr_base.Value(j + imiddle));
3096 if (i + 1 == nr) { // top
3097 Nf = uv_et[next_base_len - 1].node;
3098 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
3099 u = uv_et[next_base_len - 1].u;
3100 v = uv_et[next_base_len - 1].v;
3102 else if (j + imiddle == curr_base_len) { // right
3103 Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
3109 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
3110 int nearest_node_j = (int)rel;
3111 rel -= nearest_node_j;
3112 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
3113 double u1 = quad->uv_grid[ij].u;
3114 double v1 = quad->uv_grid[ij].v;
3115 double u2 = quad->uv_grid[ij + 1].u;
3116 double v2 = quad->uv_grid[ij + 1].v;
3117 double duj = (u2 - u1) * rel;
3118 double dvj = (v2 - v1) * rel;
3122 gp_Pnt P = S->Value(u,v);
3123 SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
3124 meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
3125 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
3128 next_par_u.SetValue(next_base_len, u);
3129 next_par_v.SetValue(next_base_len, v);
3130 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j - 1 + imiddle), i),
3131 NodesBRD.Value(curr_base.Value(j + imiddle), i),
3132 NodesBRD.Value(next_base.Value(next_base_len), i + 1),
3133 NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
3134 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
3140 // not reduced right elements
3141 for (; j < curr_base_len; j++) {
3143 const SMDS_MeshNode* Nf;
3145 next_base.SetValue(++next_base_len, curr_base.Value(j + 1));
3146 if (i + 1 == nr) { // top
3147 Nf = uv_et[next_base_len - 1].node;
3148 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf);
3149 u = uv_et[next_base_len - 1].u;
3150 v = uv_et[next_base_len - 1].v;
3152 else if (j + 1 == curr_base_len) { // right
3153 Nf = NodesBRD.Value(next_base.Value(next_base_len), i + 1);
3159 double rel = double(next_base_len - 1) * double(nt - 1) / double(nb_next - 1) + 1;
3160 int nearest_node_j = (int)rel;
3161 rel -= nearest_node_j;
3162 int ij = (i + 1 - 1) * nt + (nearest_node_j - 1);
3163 double u1 = quad->uv_grid[ij].u;
3164 double v1 = quad->uv_grid[ij].v;
3165 double u2 = quad->uv_grid[ij + 1].u;
3166 double v2 = quad->uv_grid[ij + 1].v;
3167 double duj = (u2 - u1) * rel;
3168 double dvj = (v2 - v1) * rel;
3172 gp_Pnt P = S->Value(u,v);
3173 SMDS_MeshNode* Nf1 = meshDS->AddNode(P.X(), P.Y(), P.Z());
3174 meshDS->SetNodeOnFace(Nf1, geomFaceID, u, v);
3175 NodesBRD.SetValue(next_base.Value(next_base_len), i + 1, Nf1);
3178 next_par_u.SetValue(next_base_len, u);
3179 next_par_v.SetValue(next_base_len, v);
3180 SMDS_MeshFace* F1 = myTool->AddFace(NodesBRD.Value(curr_base.Value(j), i),
3181 NodesBRD.Value(curr_base.Value(j + 1), i),
3182 NodesBRD.Value(next_base.Value(next_base_len), i + 1),
3183 NodesBRD.Value(next_base.Value(next_base_len - 1), i + 1));
3184 if (F1) meshDS->SetMeshElementOnShape(F1, geomFaceID);
3187 curr_base_len = next_base_len;
3188 curr_base = next_base;
3189 curr_par_u = next_par_u;
3190 curr_par_v = next_par_v;
3193 } // end "linear" simple reduce
3194 } // end Simple Reduce implementation