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0025266: Debug statements in the source are getting flushed on to the console
[occt.git] / src / ChFi3d / ChFi3d_Builder_1.cxx
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b311480e 1// Created on: 1993-12-15
2// Created by: Isabelle GRIGNON
3// Copyright (c) 1993-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
17#include <ChFi3d_Builder.jxx>
18
19#include <Precision.hxx>
20
21#include <gp_Pnt.hxx>
22#include <gp_Vec.hxx>
23
24#include <TopoDS.hxx>
25#include <TopoDS_Shape.hxx>
26#include <TopoDS_Face.hxx>
27#include <TopoDS_Edge.hxx>
28#include <TopoDS_Vertex.hxx>
29
30#include <BRepAdaptor_Curve.hxx>
31#include <BRepAdaptor_Surface.hxx>
32#include <BRepLProp_SLProps.hxx>
33
34#include <TopAbs.hxx>
35#include <TopAbs_ShapeEnum.hxx>
36#include <TopAbs_Orientation.hxx>
37
38#include <BRep_Tool.hxx>
39#include <TopExp.hxx>
40#include <TopTools_ListIteratorOfListOfShape.hxx>
41#include <TopOpeBRepDS_Surface.hxx>
42
43#include <ChFiDS_ErrorStatus.hxx>
44#include <ChFiDS_State.hxx>
45#include <ChFiDS_Spine.hxx>
46#include <ChFiDS_FilSpine.hxx>
47#include <ChFiDS_HData.hxx>
48#include <ChFiDS_SurfData.hxx>
49#include <ChFiDS_Regul.hxx>
50#include <ChFiDS_ListIteratorOfRegularities.hxx>
51#include <ChFiDS_ListIteratorOfListOfStripe.hxx>
52
53#include <ChFi3d.hxx>
54#include <ChFi3d_Builder_0.hxx>
55
56#include <LocalAnalysis_SurfaceContinuity.hxx>
57#include <TopOpeBRepTool_TOOL.hxx>
58
59#ifdef DEB
60extern Standard_Boolean ChFi3d_GetcontextFORCEBLEND();
61#endif
62
63static TopOpeBRepDS_BuildTool mkbuildtool()
64{
65 TopOpeBRepTool_GeomTool GT2(TopOpeBRepTool_BSPLINE1,
66 Standard_True,
67 Standard_False,
68 Standard_False);
69 TopOpeBRepDS_BuildTool BT(GT2);
70 BT.OverWrite(Standard_False);
71 BT.Translate(Standard_False);
72 return BT;
73}
74
75// Modified by Sergey KHROMOV - Tue Dec 18 18:02:55 2001 Begin
76Standard_Boolean isTangentFaces(const TopoDS_Edge &theEdge,
77 const TopoDS_Face &theFace1,
78 const TopoDS_Face &theFace2)
79{
80 if (BRep_Tool::Continuity( theEdge, theFace1, theFace2 ) != GeomAbs_C0)
81 return Standard_True;
82
83 Standard_Real aFirst;
84 Standard_Real aLast;
85
86// Obtaining of pcurves of edge on two faces.
87 const Handle(Geom2d_Curve) aC2d1 = BRep_Tool::CurveOnSurface
88 (theEdge, theFace1, aFirst, aLast);
89 const Handle(Geom2d_Curve) aC2d2 = BRep_Tool::CurveOnSurface
90 (theEdge, theFace2, aFirst, aLast);
91 if (aC2d1.IsNull() || aC2d2.IsNull())
92 return Standard_False;
93
94// Obtaining of two surfaces from adjacent faces.
95 Handle(Geom_Surface) aSurf1 = BRep_Tool::Surface(theFace1);
96 Handle(Geom_Surface) aSurf2 = BRep_Tool::Surface(theFace2);
97
98 if (aSurf1.IsNull() || aSurf2.IsNull())
99 return Standard_False;
100
101// Computation of the number of samples on the edge.
102 BRepAdaptor_Surface aBAS1(theFace1);
103 BRepAdaptor_Surface aBAS2(theFace2);
104 Handle(BRepAdaptor_HSurface) aBAHS1 = new BRepAdaptor_HSurface(aBAS1);
105 Handle(BRepAdaptor_HSurface) aBAHS2 = new BRepAdaptor_HSurface(aBAS2);
106 Handle(BRepTopAdaptor_TopolTool) aTool1 = new BRepTopAdaptor_TopolTool(aBAHS1);
107 Handle(BRepTopAdaptor_TopolTool) aTool2 = new BRepTopAdaptor_TopolTool(aBAHS2);
108 Standard_Integer aNbSamples1 = aTool1->NbSamples();
109 Standard_Integer aNbSamples2 = aTool2->NbSamples();
110 Standard_Integer aNbSamples = Max(aNbSamples1, aNbSamples2);
111
112
113// Computation of the continuity.
114 Standard_Real aPar;
115 Standard_Real aDelta = (aLast - aFirst)/(aNbSamples - 1);
116 Standard_Integer i, nbNotDone = 0;
117
118 for (i = 1, aPar = aFirst; i <= aNbSamples; i++, aPar += aDelta) {
119 if (i == aNbSamples) aPar = aLast;
120
121 LocalAnalysis_SurfaceContinuity aCont(aC2d1, aC2d2, aPar,
122 aSurf1, aSurf2, GeomAbs_G1,
123 0.001, 0.001, 0.1, 0.1, 0.1);
124 if (!aCont.IsDone())
125 {
126 nbNotDone++;
127 continue;
128 }
129 if (!aCont.IsG1())
130 return Standard_False;
131 }
132
133 if (nbNotDone == aNbSamples)
134 return Standard_False;
135
136 //Compare normals of tangent faces in the middle point
137 Standard_Real MidPar = (aFirst + aLast)/2.;
138 gp_Pnt2d uv1 = aC2d1->Value(MidPar);
139 gp_Pnt2d uv2 = aC2d2->Value(MidPar);
140 gp_Dir normal1, normal2;
141 TopOpeBRepTool_TOOL::Nt( uv1, theFace1, normal1 );
142 TopOpeBRepTool_TOOL::Nt( uv2, theFace2, normal2 );
143 Standard_Real dot = normal1.Dot(normal2);
144 if (dot < 0.)
145 return Standard_False;
146 return Standard_True;
147}
148// Modified by Sergey KHROMOV - Tue Dec 18 18:02:56 2001 End
149
150//=======================================================================
151//function : ChFi3d_Builder
152//purpose :
153//=======================================================================
154ChFi3d_Builder::ChFi3d_Builder(const TopoDS_Shape& S,
155 const Standard_Real Ta) :
156 done(Standard_False), myShape(S)
157{
158 myDS = new TopOpeBRepDS_HDataStructure();
159 myCoup = new TopOpeBRepBuild_HBuilder(mkbuildtool());
160 myEFMap.Fill(S,TopAbs_EDGE,TopAbs_FACE);
161 myESoMap.Fill(S,TopAbs_EDGE,TopAbs_SOLID);
162 myEShMap.Fill(S,TopAbs_EDGE,TopAbs_SHELL);
163 myVFMap.Fill(S,TopAbs_VERTEX,TopAbs_FACE);
164 myVEMap.Fill(S,TopAbs_VERTEX,TopAbs_EDGE);
165 SetParams(Ta,1.e-4,1.e-5,1.e-4,1.e-5,1.e-3);
166 SetContinuity(GeomAbs_C1, Ta);
167}
168
169//=======================================================================
170//function : SetParams
171//purpose :
172//=======================================================================
173
174void ChFi3d_Builder::SetParams(const Standard_Real Tang,
175 const Standard_Real Tesp,
176 const Standard_Real T2d,
177 const Standard_Real TApp3d,
178 const Standard_Real TolApp2d,
179 const Standard_Real Fleche)
180{
181 angular = Tang;
182 tolesp = Tesp;
183 tol2d = T2d;
184 tolapp3d = TApp3d;
185 tolapp2d = TolApp2d;
186 fleche = Fleche;
187}
188
189//=======================================================================
190//function : SetContinuity
191//purpose :
192//=======================================================================
193
194void ChFi3d_Builder::SetContinuity(const GeomAbs_Shape InternalContinuity,
195 const Standard_Real AngularTolerance)
196{
197 myConti = InternalContinuity;
198 tolappangle = AngularTolerance;
199}
200
201//=======================================================================
202//function : IsDone
203//purpose :
204//=======================================================================
205
206Standard_Boolean ChFi3d_Builder::IsDone() const
207{
208 return done;
209}
210
211//=======================================================================
212//function : Shape
213//purpose :
214//=======================================================================
215
216TopoDS_Shape ChFi3d_Builder::Shape()const
217{
218 Standard_NoSuchObject_Raise_if(!done,"");
219 return myShapeResult;
220}
221
222//=======================================================================
223//function : NbFaultyContours
224//purpose :
225//=======================================================================
226
227Standard_Integer ChFi3d_Builder::NbFaultyContours() const
228{
229 return badstripes.Extent();
230}
231
232//=======================================================================
233//function : FaultyContour
234//purpose :
235//=======================================================================
236
237Standard_Integer ChFi3d_Builder::FaultyContour(const Standard_Integer I) const
238{
239 ChFiDS_ListIteratorOfListOfStripe itel;
240 Standard_Integer k = 0;
241 Handle(ChFiDS_Stripe) st;
242 for (itel.Initialize(badstripes);itel.More(); itel.Next()) {
243 k += 1;
244 if(k == I) {
245 st = itel.Value();
246 break;
247 }
248 }
249 if(st.IsNull()) return 0;
250 k = 0;
251 for (itel.Initialize(myListStripe);itel.More(); itel.Next()) {
252 k += 1;
253 if(st == itel.Value()) return k;
254 }
255 return 0;
256}
257
258//=======================================================================
259//function : NbComputedSurfaces
260//purpose :
261//=======================================================================
262
263Standard_Integer ChFi3d_Builder::NbComputedSurfaces(const Standard_Integer IC) const
264{
265 ChFiDS_ListIteratorOfListOfStripe itel;
266 Standard_Integer k = 0;
267 Handle(ChFiDS_Stripe) st;
268 for (itel.Initialize(myListStripe);itel.More(); itel.Next()) {
269 k += 1;
270 if(k == IC) {
271 st = itel.Value();
272 break;
273 }
274 }
275 if(st.IsNull()) return 0;
276 if(st->Spine().IsNull()) return 0;
277 Handle(ChFiDS_HData) hd = st->SetOfSurfData();
278 if(hd.IsNull()) return 0;
279 return hd->Length();
280}
281
282//=======================================================================
283//function : ComputedSurface
284//purpose :
285//=======================================================================
286
287Handle(Geom_Surface) ChFi3d_Builder::ComputedSurface(const Standard_Integer IC,
288 const Standard_Integer IS) const
289{
290 ChFiDS_ListIteratorOfListOfStripe itel;
291 Standard_Integer k = 0;
292 Handle(ChFiDS_Stripe) st;
293 for (itel.Initialize(myListStripe);itel.More(); itel.Next()) {
294 k += 1;
295 if(k == IC) {
296 st = itel.Value();
297 break;
298 }
299 }
300 Handle(ChFiDS_HData) hd = st->SetOfSurfData();
301 Standard_Integer isurf=hd->Value(IS)->Surf();
302 return myDS->Surface(isurf).Surface();
303}
304
305//=======================================================================
306//function : NbFaultyVertices
307//purpose :
308//=======================================================================
309
310Standard_Integer ChFi3d_Builder::NbFaultyVertices() const
311{
312 return badvertices.Extent();
313}
314
315//=======================================================================
316//function : FaultyVertex
317//purpose :
318//=======================================================================
319
320TopoDS_Vertex ChFi3d_Builder::FaultyVertex(const Standard_Integer IV) const
321{
322 TopTools_ListIteratorOfListOfShape it;
323 TopoDS_Vertex V;
324 Standard_Integer k = 0;
325 for(it.Initialize(badvertices);it.More(); it.Next()) {
326 k += 1;
327 if(k == IV) {
328 V = TopoDS::Vertex(it.Value());
329 break;
330 }
331 }
332 return V;
333}
334
335//=======================================================================
336//function : HasResult
337//purpose :
338//=======================================================================
339
340Standard_Boolean ChFi3d_Builder::HasResult() const
341{
342 return hasresult;
343}
344
345//=======================================================================
346//function : BadShape
347//purpose :
348//=======================================================================
349
350TopoDS_Shape ChFi3d_Builder::BadShape()const
351{
352 Standard_NoSuchObject_Raise_if(!hasresult,"");
353 return badShape;
354}
355
356//=======================================================================
357//function : StripeStatus
358//purpose :
359//=======================================================================
360
361ChFiDS_ErrorStatus ChFi3d_Builder::StripeStatus(const Standard_Integer IC)const
362{
363 ChFiDS_ListIteratorOfListOfStripe itel;
364 Standard_Integer k =0;
365 Handle(ChFiDS_Stripe) st;
366 for (itel.Initialize(myListStripe);itel.More(); itel.Next()) {
367 k += 1;
368 if(k == IC) {
369 st = itel.Value();
370 break;
371 }
372 }
373 ChFiDS_ErrorStatus stat=st->Spine()->ErrorStatus();
374 return stat;
375}
376
377//=======================================================================
378//function : Builder
379//purpose :
380//=======================================================================
381
382Handle(TopOpeBRepBuild_HBuilder) ChFi3d_Builder::Builder()const
383{
384 return myCoup;
385}
386
387//=======================================================================
388//function : ChFi3d_FaceTangency
81bba717 389//purpose : determine if the faces opposing to edges are tangent
390// to go from opposing faces on e0 to opposing faces
391// on e1, consider all faces starting at a common top.
7fd59977 392//=======================================================================
393
394Standard_Boolean ChFi3d_Builder::FaceTangency(const TopoDS_Edge& E0,
395 const TopoDS_Edge& E1,
396 const TopoDS_Vertex& V) const
397{
398 TopTools_ListIteratorOfListOfShape It,Jt;
399 TopoDS_Edge Ec;
400 Standard_Integer Nbf;
401 TopoDS_Face F[2];
402
81bba717 403 //It is checked if the connection is not on a regular edge.
7fd59977 404 for (It.Initialize(myEFMap(E1)), Nbf= 0 ;It.More();It.Next(), Nbf++) {
405 if (Nbf>1)
406 Standard_ConstructionError::Raise("ChFi3d_Builder:only 2 faces");
407 F[Nbf] = TopoDS::Face(It.Value());
408 }
409 if(Nbf < 2) return Standard_False;
410// Modified by Sergey KHROMOV - Fri Dec 21 17:44:19 2001 Begin
411//if (BRep_Tool::Continuity(E1,F[0],F[1]) != GeomAbs_C0) {
412 if (isTangentFaces(E1,F[0],F[1])) {
413// Modified by Sergey KHROMOV - Fri Dec 21 17:44:21 2001 End
414 return Standard_False;
415 }
416
417 for (Jt.Initialize(myVEMap(V));Jt.More();Jt.Next()) {
418 Ec = TopoDS::Edge(Jt.Value());
419 if (!Ec.IsSame(E0) && !Ec.IsSame(E1) &&
420 Ec.Orientation() != TopAbs_INTERNAL &&
421 Ec.Orientation() != TopAbs_EXTERNAL &&
422 !BRep_Tool::Degenerated(Ec)) {
423 for (It.Initialize(myEFMap(Ec)), Nbf= 0 ;It.More();It.Next(), Nbf++) {
424 if (Nbf>1)
425 Standard_ConstructionError::Raise("ChFi3d_Builder:only 2 faces");
426 F[Nbf] = TopoDS::Face(It.Value());
427 }
428 if(Nbf < 2) return Standard_False;
429// Modified by Sergey KHROMOV - Tue Dec 18 18:10:40 2001 Begin
430// if (BRep_Tool::Continuity(Ec,F[0],F[1]) < GeomAbs_G1) {
431 if (!isTangentFaces(Ec,F[0],F[1])) {
432// Modified by Sergey KHROMOV - Tue Dec 18 18:10:41 2001 End
433 return Standard_False;
434 }
435 }
436 }
437 return Standard_True;
438
439}
440
441
442//=======================================================================
443//function : TangentExtremity
81bba717 444//purpose : Test if 2 faces are tangent at the end of an edge
7fd59977 445//=======================================================================
446static Standard_Boolean TangentExtremity(const TopoDS_Vertex& V,
447 const TopoDS_Edge& E,
448 const Handle(BRepAdaptor_HSurface)& hs1,
449 const Handle(BRepAdaptor_HSurface)& hs2,
450// const Standard_Real t3d,
451 const Standard_Real tang)
452{
453 TopoDS_Face f1 = hs1->ChangeSurface().Face();
454 TopAbs_Orientation O1 = f1.Orientation();
455 f1.Orientation(TopAbs_FORWARD);
456 TopoDS_Face f2 = hs2->ChangeSurface().Face();
457 TopAbs_Orientation O2 = f2.Orientation();
458 f2.Orientation(TopAbs_FORWARD);
459 TopoDS_Edge e1 = E, e2 = E;
460 e1.Orientation(TopAbs_FORWARD);
461 e2.Orientation(TopAbs_FORWARD);
462 if(f1.IsSame(f2) && BRep_Tool::IsClosed(e1,f1))
463 e2.Orientation(TopAbs_REVERSED);
464 Standard_Real p1 = BRep_Tool::Parameter(V,e1,f1);
465 Standard_Real p2 = BRep_Tool::Parameter(V,e2,f2);
466 Standard_Real u,v,f,l, Eps = 1.e-9;
467 gp_Vec n1, n2;// gp_Pnt pt1,pt2;
468 Handle(Geom2d_Curve) pc1 = BRep_Tool::CurveOnSurface(e1,f1,f,l);
469 pc1->Value(p1).Coord(u,v);
470 BRepLProp_SLProps theProp1(hs1->ChangeSurface(), u, v, 1, Eps);
471 if (theProp1.IsNormalDefined()) {
472 n1.SetXYZ(theProp1.Normal().XYZ());
473 if (O1 == TopAbs_REVERSED) n1.Reverse();
474 }
81bba717 475 else return Standard_False; // It is not known...
7fd59977 476
477
478 Handle(Geom2d_Curve) pc2 = BRep_Tool::CurveOnSurface(e2,f2,f,l);
479 pc2->Value(p2).Coord(u,v);
480 BRepLProp_SLProps theProp2(hs2->ChangeSurface(), u, v, 1, Eps);
481 if (theProp2.IsNormalDefined()) {
482 n2.SetXYZ(theProp2.Normal().XYZ());
483 if(O2 == TopAbs_REVERSED) n2.Reverse();
484 }
81bba717 485 else return Standard_False; // It is not known...
7fd59977 486
487 return (n1.Angle(n2) < tang);
488}
489
490//=======================================================================
491//function : TangentOnVertex
81bba717 492//purpose : Test if support faces of an edge are tangent at end.
7fd59977 493//=======================================================================
494static Standard_Boolean TangentOnVertex(const TopoDS_Vertex& V,
495 const TopoDS_Edge& E,
496 const ChFiDS_Map& EFMap,
497 const Standard_Real tang)
498{
499 TopoDS_Face ff1,ff2;
500 ChFi3d_conexfaces(E,ff1,ff2,EFMap);
501 if(ff1.IsNull() || ff2.IsNull()) return 0;
502 Handle(BRepAdaptor_HSurface) S1 = new (BRepAdaptor_HSurface)(ff1);
503 Handle(BRepAdaptor_HSurface) S2 = new (BRepAdaptor_HSurface)(ff2);
504 return TangentExtremity(V, E, S1, S2, tang);
505}
506
507//=======================================================================
508//function : PerformExtremity
81bba717 509//purpose : In case if PerformElement returned BreakPoint at one or
510// another extremity, it is attempted to refine
511// depending on concavities between neighbour faces of the top.
7fd59977 512//=======================================================================
513
514void ChFi3d_Builder::PerformExtremity (const Handle(ChFiDS_Spine)& Spine)
515{
516 for(Standard_Integer ii = 1; ii <= 2; ii++){
517 TopoDS_Edge E[3],Ec;
518 TopoDS_Vertex V;
519 ChFiDS_State sst;
520 Standard_Integer iedge;
521 Handle(BRepAdaptor_HSurface) hs1,hs2;
522 if(ii == 1){
523 sst = Spine->FirstStatus();
524 iedge = 1;
525 V = Spine->FirstVertex();
526 }
527 else{
528 sst = Spine->LastStatus();
529 iedge = Spine->NbEdges();
530 E[0] = Spine->Edges(iedge);
531 V = Spine->LastVertex();
532 }
81bba717 533 //Before all it is checked if the tangency is not dead.
7fd59977 534 E[0] = Spine->Edges(iedge);
535 ConexFaces (Spine,iedge,0,hs1,hs2);
536 if(TangentExtremity(V,E[0],hs1,hs2,angular)){
537 Spine->SetTangencyExtremity(Standard_True, (ii == 1));
538 }
539
540 if(sst == ChFiDS_BreakPoint){
541 TopTools_ListIteratorOfListOfShape It;//,Jt;
542 Standard_Integer i = 0, j;
543 Standard_Boolean sommetpourri = Standard_False;
544 for (It.Initialize(myVEMap(V));It.More();It.Next()){
545 Ec = TopoDS::Edge(It.Value());
546 Standard_Boolean bonedge = !BRep_Tool::Degenerated(Ec);
547 if(bonedge){
548 TopoDS_Vertex v1,v2;
549 TopExp::Vertices(Ec,v1,v2);
550 Standard_Boolean eclosed = v1.IsSame(v2);
551 Standard_Integer nboc = 0;
552 for(j = 0; j <= i && bonedge; j++){
553 if(!eclosed) bonedge = !Ec.IsSame(E[j]);
554 else if(Ec.IsSame(E[j])){
555 nboc++;
556 bonedge = nboc<2;
557 }
558 }
559 }
560 if(bonedge){
561 if( i < 2 ){
562 i++;
563 E[i] = Ec;
564 }
565 else{
63c629aa 566#ifdef CHFI3D_DEB
81bba717 567 cout<<"top has more than 3 edges"<<endl;
7fd59977 568#endif
569 sommetpourri = Standard_True;
570 break;
571 }
572 }
573 }
574 if(i != 2) sommetpourri = Standard_True;
575 if(!sommetpourri){
576 sst = ChFi3d_EdgeState(E,myEFMap);
577 }
578 if(ii==1)Spine->SetFirstStatus(sst);
579 else Spine->SetLastStatus(sst);
580 }
581 }
582
7fd59977 583 if (!Spine->IsPeriodic()) {
584 TopTools_ListIteratorOfListOfShape It,Jt;
585 Standard_Integer nbf = 0, jf = 0;
586 for (It.Initialize(myVFMap(Spine->FirstVertex())); It.More(); It.Next()){
587 jf++;
588 Standard_Integer kf = 1;
589 const TopoDS_Shape& cur = It.Value();
590 for (Jt.Initialize(myVFMap(Spine->FirstVertex())); Jt.More() && (kf < jf); Jt.Next(), kf++){
591 if(cur.IsSame(Jt.Value())) break;
592 }
593 if(kf == jf) nbf++;
594 }
595 if(nbf>3) {
596 Spine->SetFirstStatus(ChFiDS_BreakPoint);
63c629aa 597#if CHFI3D_DEB
81bba717 598 cout<<"top has : "<<nbf<<" faces."<<endl;
7fd59977 599#endif
600 }
601 nbf = 0, jf = 0;
602 for (It.Initialize(myVFMap(Spine->LastVertex())); It.More(); It.Next()){
603 jf++;
604 Standard_Integer kf = 1;
605 const TopoDS_Shape& cur = It.Value();
606 for (Jt.Initialize(myVFMap(Spine->LastVertex())); Jt.More() && (kf < jf); Jt.Next(), kf++){
607 if(cur.IsSame(Jt.Value())) break;
608 }
609 if(kf == jf) nbf++;
610 }
611 if(nbf>3) {
612 Spine->SetLastStatus(ChFiDS_BreakPoint);
63c629aa 613#if CHFI3D_DEB
81bba717 614 cout<<"top has : "<<nbf<<" faces."<<endl;
7fd59977 615#endif
616 }
617 }
618}
619
620//=======================================================================
621//function : PerformElement
81bba717 622//purpose : find all mutually tangent edges ;
623// Each edge has 2 opposing faces. For 2 adjacent tangent edges it is required that
624// the opposing faces were tangent.
7fd59977 625//=======================================================================
626
627Standard_Boolean ChFi3d_Builder::PerformElement(const Handle(ChFiDS_Spine)& Spine)
628{
629 Standard_Real ta = angular;
630 TopTools_ListIteratorOfListOfShape It;
631 Standard_Integer Nbface;
632 TopTools_ListIteratorOfListOfShape Jt;
633 Standard_Real Wl,Wf;
634 Standard_Boolean degeneOnEc;
635 gp_Pnt P2;
636 gp_Vec V1,V2;
637 TopoDS_Vertex Ve1,VStart,FVEc,LVEc,FVEv,LVEv;
638 TopoDS_Edge Ev,Ec(Spine->Edges(1));
639 if(BRep_Tool::Degenerated(Ec)) return 0;
81bba717 640 //it is checked if the edge is a cut edge
7fd59977 641 TopoDS_Face ff1,ff2;
642 ChFi3d_conexfaces(Ec,ff1,ff2,myEFMap);
643 if(ff1.IsNull() || ff2.IsNull()) return 0;
644// Modified by Sergey KHROMOV - Fri Dec 21 17:46:22 2001 End
645//if(BRep_Tool::Continuity(Ec,ff1,ff2) != GeomAbs_C0) return 0;
646 if (isTangentFaces(Ec,ff1,ff2)) return 0;
647// Modified by Sergey KHROMOV - Fri Dec 21 17:46:24 2001 Begin
648
649 BRepAdaptor_Curve CEc,CEv;
650 TopAbs_Orientation curor = Ec.Orientation();
651 TopExp::Vertices(Ec,VStart,LVEc);
652
653
654 Standard_Boolean Fini = Standard_False;
655 Standard_Integer Nb;
7fd59977 656 ChFiDS_State CurSt = ChFiDS_Closed;
81bba717 657 if (VStart.IsSame(LVEc)) {//case if only one edge is closed
7fd59977 658 CEc.Initialize(Ec);
659 Wl = BRep_Tool::Parameter(VStart,Ec);
660 CEc.D1(Wl,P2,V1);
661 Wl = BRep_Tool::Parameter(LVEc,Ec);
662 CEc.D1(Wl,P2,V2);
663 if (V1.IsParallel(V2,ta)) {
664 if (FaceTangency(Ec,Ec,VStart)) {
665 CurSt = ChFiDS_Closed;
666 }
667 else {
668 CurSt = ChFiDS_BreakPoint;
669 }
670 }
671 else {
672 CurSt = ChFiDS_BreakPoint;
673 }
674 Spine->SetLastStatus(CurSt);
675 Spine->SetFirstStatus(CurSt);
676 }
81bba717 677 else { // Downstream progression
7fd59977 678 FVEc = VStart;
679 TopAbs_Orientation Or1;
680 while (!Fini) {
681 CurSt = ChFiDS_FreeBoundary;
682 Wl = BRep_Tool::Parameter(LVEc,Ec);
683 degeneOnEc = TangentOnVertex(LVEc, Ec, myEFMap, ta);
684 CEc.Initialize(Ec);
685 CEc.D1(Wl,P2,V1);
686 Nb = Spine->NbEdges();
687
688 for (It.Initialize(myVEMap(LVEc));It.More();It.Next()) {
689 Ev = TopoDS::Edge(It.Value());
690 if (!Ev.IsSame(Ec) && !BRep_Tool::Degenerated(Ev)){
691 TopExp::Vertices(Ev,FVEv,LVEv);
692 if (LVEc.IsSame(LVEv)) {
693 Ve1 = FVEv;
694 FVEv = LVEv;
695 LVEv = Ve1;
696 Or1 = TopAbs_REVERSED;
697 }
698 else Or1 = TopAbs_FORWARD;
699
700 Wf = BRep_Tool::Parameter(FVEv,Ev);
701 CEv.Initialize(Ev);
702 CEv.D1(Wf,P2,V2);
703 Standard_Real av1v2 = V1.Angle(V2);
704 Standard_Boolean rev = (Or1 != curor);
705 Standard_Boolean OnAjoute = Standard_False;
706 if (FaceTangency(Ec,Ev,FVEv)) {
81bba717 707 // there is no need of tolerance
708 // to make a decision (PRO9486) the regularity is enough.
709 // However, the abcense of turn-back is checked (PRO9810)
c6541a0c
D		 710 OnAjoute = ((!rev && av1v2 < M_PI/2)
711 ||(rev && av1v2 > M_PI/2));
81bba717 712 // mate attention to the single case (cf CTS21610_1)
7fd59977 713 if (OnAjoute && (degeneOnEc ||
714 TangentOnVertex(LVEc, Ev,myEFMap, ta)) )
c6541a0c 715 OnAjoute=((!rev && av1v2 < ta) || (rev && (M_PI - av1v2) < ta));
7fd59977 716 }
717 if (OnAjoute) {
81bba717 718 Fini = Standard_False; // If this can be useful (Cf PRO14713)
7fd59977 719 Ec = Ev;
720// Ec = TopoDS::Edge(Ev);
721 Ec.Orientation(Or1);
722 Wl = Wf; LVEc = LVEv;
723 Spine->SetEdges(Ec);
724 curor = Or1;
725 if (VStart.IsSame(LVEv)) {
726 if (FaceTangency(Ev,Spine->Edges(1),LVEv)) {
727 CurSt = ChFiDS_Closed; Fini = Standard_True;
728 }
729 else {
730 CurSt = ChFiDS_BreakPoint;Fini = Standard_True;
731 }
732 }
733 break;
734 }
735 else {
736 for (Jt.Initialize(myEFMap(Ev)), Nbface= 0 ;Jt.More();Jt.Next(),
737 Nbface++) {}
738 if (Nbface> 1) CurSt = ChFiDS_BreakPoint;
c6541a0c 739 Fini = ((!rev && av1v2 < ta) || (rev && (M_PI - av1v2) < ta));
7fd59977 740 }
741 }
742 }
743 Fini = Fini || (Nb == Spine->NbEdges());
744 }
745 Spine->SetLastStatus(CurSt);
746 if (CurSt == ChFiDS_Closed) {
747 Spine->SetFirstStatus(CurSt);
748 }
81bba717 749 else {// Upstream progression
7fd59977 750 Fini = Standard_False;
751 Ec = Spine->Edges(1);
752 curor = Ec.Orientation();
753 FVEc = VStart;
754 while (!Fini) {
755 CurSt = ChFiDS_FreeBoundary;
756 Wl = BRep_Tool::Parameter(FVEc,Ec);
757 degeneOnEc = TangentOnVertex(FVEc, Ec, myEFMap, ta);
758 CEc.Initialize(Ec);
759 CEc.D1(Wl,P2,V1);
760 Nb = Spine->NbEdges();
761
762 for (It.Initialize(myVEMap(FVEc));It.More();It.Next()) {
763 Ev = TopoDS::Edge(It.Value());
764 if (!Ev.IsSame(Ec) && !BRep_Tool::Degenerated(Ev)) {
765 TopExp::Vertices(Ev,FVEv,LVEv);
766 if (FVEc.IsSame(FVEv)) {
767 Ve1 = FVEv;
768 FVEv = LVEv;
769 LVEv = Ve1;
770 Or1 = TopAbs_REVERSED;
771 }
772 else {
773 Or1 = TopAbs_FORWARD;
774 }
775 Wf = BRep_Tool::Parameter(LVEv,Ev);
776 CEv.Initialize(Ev);
777 CEv.D1(Wf,P2,V2);
778 Standard_Real av1v2 = V1.Angle(V2);
779 Standard_Boolean rev = (Or1 != curor);
780 Standard_Boolean OnAjoute = Standard_False;
781 if (FaceTangency(Ec,Ev,LVEv)) {
c6541a0c
D		 782 OnAjoute = ((!rev && av1v2 < M_PI/2)
783 ||(rev && av1v2 > M_PI/2));
7fd59977 784 if (OnAjoute && (degeneOnEc ||
785 TangentOnVertex(FVEc, Ev,myEFMap, ta)) )
c6541a0c 786 OnAjoute=((!rev && av1v2 < ta) || (rev && (M_PI-av1v2) < ta));
7fd59977 787 }
788 if (OnAjoute) {
789 Ec = Ev;
790// Ec = TopoDS::Edge(Ev);
791 Ec.Orientation(Or1);
792 Wl = Wf; FVEc = FVEv;
793 Spine->PutInFirst(Ec);
794 curor = Or1;
795 break;
796 }
797 else {
798 for(Jt.Initialize(myEFMap(Ev)),Nbface= 0 ;Jt.More();Jt.Next(),
799 Nbface++) {}
800 if (Nbface> 1) CurSt = ChFiDS_BreakPoint;
c6541a0c 801 Fini = ((!rev && av1v2 < ta) || (rev && (M_PI - av1v2) < ta));
7fd59977 802 }
803 }
804 }
805 Fini = Fini || (Nb == Spine->NbEdges());
806 }
807 Spine->SetFirstStatus(CurSt);
808 }
809 }
810 return 1;
811}
812
813//=======================================================================
814//function : Remove
815//purpose :
816//=======================================================================
817
818void ChFi3d_Builder::Remove(const TopoDS_Edge& E)
819{
820 ChFiDS_ListIteratorOfListOfStripe itel(myListStripe);
821
822 for ( ; itel.More(); itel.Next()) {
823 const Handle(ChFiDS_Spine)& sp = itel.Value()->Spine();
824 for (Standard_Integer j = 1; j <= sp->NbEdges(); j++){
825 if (E.IsSame(sp->Edges(j))){
826 myListStripe.Remove(itel);
827 return;
828 }
829 }
830 }
831}
832
833
834//=======================================================================
835//function : Value
836//purpose :
837//=======================================================================
838
839Handle(ChFiDS_Spine) ChFi3d_Builder::Value
840(const Standard_Integer I)const
841{
842 ChFiDS_ListIteratorOfListOfStripe itel(myListStripe);
843 for (Standard_Integer ic = 1; ic < I; ic++) {itel.Next();}
844 return itel.Value()->Spine();
845}
846
847//=======================================================================
848//function : NbElements
849//purpose :
850//=======================================================================
851
852Standard_Integer ChFi3d_Builder::NbElements()const
853{
854 Standard_Integer i = 0;
855 ChFiDS_ListIteratorOfListOfStripe itel(myListStripe);
856 for ( ;itel.More(); itel.Next()){
857 const Handle(ChFiDS_Spine)& sp = itel.Value()->Spine();
858 if(sp.IsNull()) break;
859 i++;
860 }
861 return i;
862}
863
864//=======================================================================
865//function : Contains
866//purpose :
867//=======================================================================
868
869Standard_Integer ChFi3d_Builder::Contains(const TopoDS_Edge& E)const
870{
871 Standard_Integer i = 1,j;
872 ChFiDS_ListIteratorOfListOfStripe itel(myListStripe);
873 for ( ;itel.More(); itel.Next(), i++){
874 const Handle(ChFiDS_Spine)& sp = itel.Value()->Spine();
875 if(sp.IsNull()) break;
876 for (j = 1; j <= sp->NbEdges(); j++){
877 if(E.IsSame(sp->Edges(j))) return i;
878 }
879 }
880 return 0;
881}
882
883//=======================================================================
884//function : Contains
885//purpose :
886//=======================================================================
887
888Standard_Integer ChFi3d_Builder::Contains(const TopoDS_Edge& E,
889 Standard_Integer& IndexInSpine)const
890{
891 Standard_Integer i = 1,j;
892 IndexInSpine = 0;
893 ChFiDS_ListIteratorOfListOfStripe itel(myListStripe);
894 for ( ;itel.More(); itel.Next(), i++){
895 const Handle(ChFiDS_Spine)& sp = itel.Value()->Spine();
896 if(sp.IsNull()) break;
897 for (j = 1; j <= sp->NbEdges(); j++){
898 if(E.IsSame(sp->Edges(j)))
899 {
900 IndexInSpine = j;
901 return i;
902 }
903 }
904 }
905 return 0;
906}
907
908//=======================================================================
909//function : Length
910//purpose :
911//=======================================================================
912
913Standard_Real ChFi3d_Builder::Length(const Standard_Integer IC)const
914{
915 if(IC <= NbElements()){
916 const Handle(ChFiDS_Spine)& sp = Value(IC);
917 return sp->LastParameter(sp->NbEdges());
918 }
919 return -1;
920}
921
922
923//=======================================================================
924//function : FirstVertex
925//purpose :
926//=======================================================================
927
928TopoDS_Vertex ChFi3d_Builder::FirstVertex(const Standard_Integer IC) const
929{
930 if(IC <= NbElements()){
931 return Value(IC)->FirstVertex();
932 }
933 return TopoDS_Vertex();
934}
935
936//=======================================================================
937//function : LastVertex
938//purpose :
939//=======================================================================
940
941TopoDS_Vertex ChFi3d_Builder::LastVertex(const Standard_Integer IC) const
942{
943 if(IC <= NbElements()){
944 return Value(IC)->LastVertex();
945 }
946 return TopoDS_Vertex();
947}
948
949//=======================================================================
950//function : Abscissa
951//purpose :
952//=======================================================================
953
954Standard_Real ChFi3d_Builder::Abscissa(const Standard_Integer IC,
955 const TopoDS_Vertex& V) const
956{
957 if(IC <= NbElements()){
958 return Value(IC)->Absc(V);
959 }
960 return -1;
961}
962
963//=======================================================================
964//function : RelativeAbscissa
965//purpose :
966//=======================================================================
967
968Standard_Real ChFi3d_Builder::RelativeAbscissa(const Standard_Integer IC,
969 const TopoDS_Vertex& V) const
970{
971 if(IC <= NbElements()){
972 return Abscissa(IC,V)/Length(IC);
973 }
974 return -1;
975}
976
977//=======================================================================
978//function : Closed
979//purpose :
980//=======================================================================
981
982Standard_Boolean ChFi3d_Builder::Closed(const Standard_Integer IC)const
983{
984 if(IC <= NbElements()){
985 return Value(IC)->IsClosed();
986 }
987 return Standard_False;
988}
989
990//=======================================================================
991//function : ClosedAndTangent
992//purpose :
993//=======================================================================
994
995Standard_Boolean ChFi3d_Builder::ClosedAndTangent
996(const Standard_Integer IC)const
997{
998 if(IC <= NbElements()){
999 return Value(IC)->IsPeriodic();
1000 }
1001 return Standard_False;
1002}
1003
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