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7fd59977 1// File: IntTools_FaceFace.cxx
2// Created: Thu Nov 23 14:52:53 2000
3// Author: Michael KLOKOV
4// Copyright: OPEN CASCADE 2000
5
6
7#include <IntTools_FaceFace.ixx>
8
9#include <Precision.hxx>
10
11#include <TColStd_HArray1OfReal.hxx>
12#include <TColStd_Array1OfReal.hxx>
13#include <TColStd_Array1OfInteger.hxx>
14#include <TColStd_SequenceOfReal.hxx>
15#include <TColStd_ListOfInteger.hxx>
16#include <TColStd_ListIteratorOfListOfInteger.hxx>
17#include <TColStd_Array1OfListOfInteger.hxx>
18
19#include <gp_Lin2d.hxx>
20#include <gp_Ax22d.hxx>
21#include <gp_Circ2d.hxx>
22#include <gp_Torus.hxx>
23#include <gp_Cylinder.hxx>
24
25#include <Bnd_Box.hxx>
26
27#include <TColgp_HArray1OfPnt2d.hxx>
28#include <TColgp_SequenceOfPnt2d.hxx>
29#include <TColgp_Array1OfPnt.hxx>
30#include <TColgp_Array1OfPnt2d.hxx>
31
32#include <IntAna_QuadQuadGeo.hxx>
33
34#include <IntSurf_PntOn2S.hxx>
35#include <IntSurf_LineOn2S.hxx>
36#include <IntSurf_PntOn2S.hxx>
37#include <IntSurf_ListOfPntOn2S.hxx>
38#include <IntRes2d_Domain.hxx>
39#include <ProjLib_Plane.hxx>
40
41#include <IntPatch_GLine.hxx>
42#include <IntPatch_RLine.hxx>
43#include <IntPatch_WLine.hxx>
44#include <IntPatch_ALine.hxx>
45#include <IntPatch_ALineToWLine.hxx>
46
47#include <ElSLib.hxx>
48#include <ElCLib.hxx>
49
50#include <Extrema_ExtCC.hxx>
51#include <Extrema_POnCurv.hxx>
52#include <BndLib_AddSurface.hxx>
53
54#include <Adaptor3d_SurfacePtr.hxx>
55#include <Adaptor2d_HLine2d.hxx>
56
57#include <GeomAbs_SurfaceType.hxx>
58#include <GeomAbs_CurveType.hxx>
59
60#include <Geom_Surface.hxx>
61#include <Geom_Line.hxx>
62#include <Geom_Circle.hxx>
63#include <Geom_Ellipse.hxx>
64#include <Geom_Parabola.hxx>
65#include <Geom_Hyperbola.hxx>
66#include <Geom_TrimmedCurve.hxx>
67#include <Geom_BSplineCurve.hxx>
68#include <Geom_RectangularTrimmedSurface.hxx>
69#include <Geom_OffsetSurface.hxx>
70#include <Geom_Curve.hxx>
71#include <Geom_Conic.hxx>
72
73#include <Geom2d_TrimmedCurve.hxx>
74#include <Geom2d_BSplineCurve.hxx>
75#include <Geom2d_Line.hxx>
76#include <Geom2d_Curve.hxx>
77#include <Geom2d_Circle.hxx>
78
79#include <Geom2dAPI_InterCurveCurve.hxx>
80#include <Geom2dInt_GInter.hxx>
81#include <GeomAdaptor_Curve.hxx>
82#include <GeomAdaptor_HSurface.hxx>
83#include <GeomAdaptor_Surface.hxx>
84#include <GeomLib_CheckBSplineCurve.hxx>
85#include <GeomLib_Check2dBSplineCurve.hxx>
86
87#include <GeomInt_WLApprox.hxx>
88#include <GeomProjLib.hxx>
89#include <GeomAPI_ProjectPointOnSurf.hxx>
90#include <Geom2dAdaptor_Curve.hxx>
91//
92#include <TopoDS.hxx>
93#include <TopoDS_Edge.hxx>
94#include <TopExp_Explorer.hxx>
95
96#include <BRep_Tool.hxx>
97#include <BRepTools.hxx>
98#include <BRepAdaptor_Surface.hxx>
99
100#include <BOPTColStd_Dump.hxx>
101
102#include <IntTools_Curve.hxx>
103#include <IntTools_Tools.hxx>
104#include <IntTools_Tools.hxx>
105#include <IntTools_TopolTool.hxx>
106#include <IntTools_PntOnFace.hxx>
107#include <IntTools_PntOn2Faces.hxx>
108#include <IntTools_Context.hxx>
109
110//
111static
112 void TolR3d(const TopoDS_Face& ,
113 const TopoDS_Face& ,
114 Standard_Real& );
115static
116 Handle(Geom_Curve) MakeBSpline (const Handle(IntPatch_WLine)&,
117 const Standard_Integer,
118 const Standard_Integer);
119
120static
121 void Parameters(const Handle(GeomAdaptor_HSurface)&,
122 const Handle(GeomAdaptor_HSurface)&,
123 const gp_Pnt&,
124 Standard_Real&,
125 Standard_Real&,
126 Standard_Real&,
127 Standard_Real&);
128
129static
130 void BuildPCurves (Standard_Real f,Standard_Real l,Standard_Real& Tol,
131 const Handle (Geom_Surface)& S,
132 const Handle (Geom_Curve)& C,
133 Handle (Geom2d_Curve)& C2d);
134
135static
136 void CorrectSurfaceBoundaries(const TopoDS_Face& theFace,
137 const Standard_Real theTolerance,
138 Standard_Real& theumin,
139 Standard_Real& theumax,
140 Standard_Real& thevmin,
141 Standard_Real& thevmax);
142static
143 Standard_Boolean NotUseSurfacesForApprox
144 (const TopoDS_Face& aF1,
145 const TopoDS_Face& aF2,
146 const Handle(IntPatch_WLine)& WL,
147 const Standard_Integer ifprm,
148 const Standard_Integer ilprm);
149
150static
151 Handle(IntPatch_WLine) ComputePurgedWLine(const Handle(IntPatch_WLine)& theWLine);
152
153static
154 Standard_Real AdjustPeriodic(const Standard_Real theParameter,
155 const Standard_Real parmin,
156 const Standard_Real parmax,
157 const Standard_Real thePeriod,
158 Standard_Real& theOffset);
159
160static
161 Handle(Geom2d_BSplineCurve) MakeBSpline2d(const Handle(IntPatch_WLine)& theWLine,
162 const Standard_Integer ideb,
163 const Standard_Integer ifin,
164 const Standard_Boolean onFirst);
165
166static
167 Standard_Boolean DecompositionOfWLine(const Handle(IntPatch_WLine)& theWLine,
168 const Handle(GeomAdaptor_HSurface)& theSurface1,
169 const Handle(GeomAdaptor_HSurface)& theSurface2,
170 const TopoDS_Face& theFace1,
171 const TopoDS_Face& theFace2,
172 const IntTools_LineConstructor& theLConstructor,
173 const Standard_Boolean theAvoidLConstructor,
174 IntPatch_SequenceOfLine& theNewLines,
175 Standard_Real& theReachedTol3d);
176
177static
178 Standard_Boolean ParameterOutOfBoundary(const Standard_Real theParameter,
179 const Handle(Geom_Curve)& theCurve,
180 const TopoDS_Face& theFace1,
181 const TopoDS_Face& theFace2,
182 const Standard_Real theOtherParameter,
183 const Standard_Boolean bIncreasePar,
184 Standard_Real& theNewParameter);
185
186static
187 Standard_Boolean IsCurveValid(Handle(Geom2d_Curve)& thePCurve);
188
189static
190 Standard_Boolean IsPointOnBoundary(const Standard_Real theParameter,
191 const Standard_Real theFirstBoundary,
192 const Standard_Real theSecondBoundary,
193 const Standard_Real theResolution,
194 Standard_Boolean& IsOnFirstBoundary);
195static
196 Standard_Boolean FindPoint(const gp_Pnt2d& theFirstPoint,
197 const gp_Pnt2d& theLastPoint,
198 const Standard_Real theUmin,
199 const Standard_Real theUmax,
200 const Standard_Real theVmin,
201 const Standard_Real theVmax,
202 gp_Pnt2d& theNewPoint);
203
204
205static
206 Standard_Integer ComputeTangentZones( const Handle(GeomAdaptor_HSurface)& theSurface1,
207 const Handle(GeomAdaptor_HSurface)& theSurface2,
208 const TopoDS_Face& theFace1,
209 const TopoDS_Face& theFace2,
210 Handle(TColgp_HArray1OfPnt2d)& theResultOnS1,
211 Handle(TColgp_HArray1OfPnt2d)& theResultOnS2,
212 Handle(TColStd_HArray1OfReal)& theResultRadius);
213
214static
215 Standard_Boolean FindPoint(const gp_Pnt2d& theFirstPoint,
216 const gp_Pnt2d& theLastPoint,
217 const Standard_Real theUmin,
218 const Standard_Real theUmax,
219 const Standard_Real theVmin,
220 const Standard_Real theVmax,
221 const gp_Pnt2d& theTanZoneCenter,
222 const Standard_Real theZoneRadius,
223 Handle(GeomAdaptor_HSurface) theGASurface,
224 gp_Pnt2d& theNewPoint);
225
226static
227 Standard_Boolean IsInsideTanZone(const gp_Pnt2d& thePoint,
228 const gp_Pnt2d& theTanZoneCenter,
229 const Standard_Real theZoneRadius,
230 Handle(GeomAdaptor_HSurface) theGASurface);
231
232static
233gp_Pnt2d AdjustByNeighbour(const gp_Pnt2d& theaNeighbourPoint,
234 const gp_Pnt2d& theOriginalPoint,
235 Handle(GeomAdaptor_HSurface) theGASurface);
236static
237Standard_Boolean ApproxWithPCurves(const gp_Cylinder& theCyl,
238 const gp_Sphere& theSph);
239
240static void PerformPlanes(const Handle(GeomAdaptor_HSurface)& theS1,
241 const Handle(GeomAdaptor_HSurface)& theS2,
242 const Standard_Real TolAng,
243 const Standard_Real TolTang,
244 const Standard_Boolean theApprox1,
245 const Standard_Boolean theApprox2,
246 IntTools_SequenceOfCurves& theSeqOfCurve,
247 Standard_Boolean& theTangentFaces);
248
249static Standard_Boolean ClassifyLin2d(const Handle(GeomAdaptor_HSurface)& theS,
250 const gp_Lin2d& theLin2d,
251 const Standard_Real theTol,
252 Standard_Real& theP1,
253 Standard_Real& theP2);
254
255static
256 void ApproxParameters(const Handle(GeomAdaptor_HSurface)& aHS1,
257 const Handle(GeomAdaptor_HSurface)& aHS2,
258 Standard_Integer& iDegMin,
259 Standard_Integer& iDegMax,
260 //modified by NIZNHY-PKV Thu Sep 23 08:38:47 2010f
261 Standard_Integer& iNbIterMax,
262 Standard_Boolean& anWithPC
263 //modified by NIZNHY-PKV Thu Sep 23 08:38:55 2010t
264 );
265
266//
267//=======================================================================
268//function :
269//purpose :
270//=======================================================================
271 IntTools_FaceFace::IntTools_FaceFace()
272{
273 myTangentFaces=Standard_False;
274 //
275 myHS1 = new GeomAdaptor_HSurface ();
276 myHS2 = new GeomAdaptor_HSurface ();
277 myTolReached2d=0.;
278 myTolReached3d=0.;
279 SetParameters(Standard_True, Standard_True, Standard_True, 1.e-07);
280}
281//=======================================================================
282//function : Face1
283//purpose :
284//=======================================================================
285 const TopoDS_Face& IntTools_FaceFace::Face1() const
286{
287 return myFace1;
288}
289
290//=======================================================================
291//function : Face2
292//purpose :
293//=======================================================================
294 const TopoDS_Face& IntTools_FaceFace::Face2() const
295{
296 return myFace2;
297}
298
299//=======================================================================
300//function : TangentFaces
301//purpose :
302//=======================================================================
303 Standard_Boolean IntTools_FaceFace::TangentFaces() const
304{
305 return myTangentFaces;
306}
307//=======================================================================
308//function : Points
309//purpose :
310//=======================================================================
311 const IntTools_SequenceOfPntOn2Faces& IntTools_FaceFace::Points() const
312{
313 return myPnts;
314}
315//=======================================================================
316//function : IsDone
317//purpose :
318//=======================================================================
319 Standard_Boolean IntTools_FaceFace::IsDone() const
320{
321 return myIsDone;
322}
323//=======================================================================
324//function : TolReached3d
325//purpose :
326//=======================================================================
327 Standard_Real IntTools_FaceFace::TolReached3d() const
328{
329 return myTolReached3d;
330}
331//=======================================================================
332//function : Lines
333//purpose : return lines of intersection
334//=======================================================================
335 const IntTools_SequenceOfCurves& IntTools_FaceFace::Lines() const
336{
337 StdFail_NotDone_Raise_if(!myIsDone,
338 "IntTools_FaceFace::Lines() => !myIntersector.IsDone()");
339 return mySeqOfCurve;
340}
341
342//=======================================================================
343//function : TolReached2d
344//purpose :
345//=======================================================================
346 Standard_Real IntTools_FaceFace::TolReached2d() const
347{
348 return myTolReached2d;
349}
350// =======================================================================
351// function: SetParameters
352//
353// =======================================================================
354 void IntTools_FaceFace::SetParameters(const Standard_Boolean ToApproxC3d,
355 const Standard_Boolean ToApproxC2dOnS1,
356 const Standard_Boolean ToApproxC2dOnS2,
357 const Standard_Real ApproximationTolerance)
358{
359 myApprox = ToApproxC3d;
360 myApprox1 = ToApproxC2dOnS1;
361 myApprox2 = ToApproxC2dOnS2;
362 myTolApprox = ApproximationTolerance;
363}
364//=======================================================================
365//function : SetList
366//purpose :
367//=======================================================================
368
369void IntTools_FaceFace::SetList(IntSurf_ListOfPntOn2S& aListOfPnts)
370{
371 myListOfPnts = aListOfPnts;
372}
373//=======================================================================
374//function : Perform
375//purpose : intersect surfaces of the faces
376//=======================================================================
377 void IntTools_FaceFace::Perform(const TopoDS_Face& F1,
378 const TopoDS_Face& F2)
379{
380 Standard_Boolean hasCone, RestrictLine, bTwoPlanes;
381 Standard_Integer aNbLin, aNbPnts, i;
382 Standard_Real TolArc, TolTang, Deflection, UVMaxStep;
383 Standard_Real umin, umax, vmin, vmax;
384 Standard_Real aTolF1, aTolF2;
385 GeomAbs_SurfaceType aType1, aType2;
386 Handle(Geom_Surface) S1, S2;
387 Handle(IntTools_TopolTool) dom1, dom2;
388 //
389 myFace1= F1;
390 myFace2= F2;
391 mySeqOfCurve.Clear();
392 //
393 myTolReached2d=0.;
394 myTolReached3d=0.;
395 //
396 myIsDone = Standard_False;
397 //
398 S1 = BRep_Tool::Surface(F1);
399 S2 = BRep_Tool::Surface(F2);
400 aTolF1 = BRep_Tool::Tolerance(F1);
401 aTolF2 = BRep_Tool::Tolerance(F2);
402 //
403 TolArc= aTolF1 + aTolF2;
404 TolTang = TolArc;
405 //
406 myNbrestr=0;//?
407 //
408 BRepAdaptor_Surface aBAS1(F1, Standard_False);
409 BRepAdaptor_Surface aBAS2(F2, Standard_False);
410 //
411 aType1=aBAS1.GetType();
412 aType2=aBAS2.GetType();
413 hasCone = Standard_False;
414 bTwoPlanes = Standard_False;
415
416 Standard_Integer NbLinPP = 0;
417 if(aType1==GeomAbs_Plane && aType2==GeomAbs_Plane){
418 bTwoPlanes = Standard_True;
419
420 BRepTools::UVBounds(F1, umin, umax, vmin, vmax);
421 myHS1->ChangeSurface().Load(S1, umin, umax, vmin, vmax);
422 //
423 BRepTools::UVBounds(F2, umin, umax, vmin, vmax);
424 myHS2->ChangeSurface().Load(S2, umin, umax, vmin, vmax);
425 Standard_Real TolAng = 1.e-8;
426 PerformPlanes(myHS1, myHS2, TolAng, TolTang,
427 myApprox1, myApprox2,
428 mySeqOfCurve, myTangentFaces);
429
430 myIsDone = Standard_True;
431
432 if(myTangentFaces) return;
433
434 NbLinPP = mySeqOfCurve.Length();
435 if(NbLinPP == 0) return;
436
437
438 Standard_Real aTolFMax;
439 //
440 myTolReached3d = 1.e-7;
441 //
442 aTolFMax=Max(aTolF1, aTolF2);
443 //
444 if (aTolFMax>myTolReached3d) {
445 myTolReached3d=aTolFMax;
446 }
447 myTolReached2d = myTolReached3d;
448
449 return;
450
451 }
452 //
453 if (aType1==GeomAbs_Plane &&
454 (aType2==GeomAbs_Cylinder ||
455 aType2==GeomAbs_Cone ||
456 aType2==GeomAbs_Torus)) {
457 Standard_Real dU, dV;
458 // F1
459 BRepTools::UVBounds(F1, umin, umax, vmin, vmax);
460 dU=0.1*(umax-umin);
461 dV=0.1*(vmax-vmin);
462 umin=umin-dU;
463 umax=umax+dU;
464 vmin=vmin-dV;
465 vmax=vmax+dV;
466 myHS1->ChangeSurface().Load(S1, umin, umax, vmin, vmax);
467 // F2
468 BRepTools::UVBounds(F2, umin, umax, vmin, vmax);
469 CorrectSurfaceBoundaries(F2, (aTolF1 + aTolF2) * 2., umin, umax, vmin, vmax);
470 myHS2->ChangeSurface().Load(S2, umin, umax, vmin, vmax);
471 //
472 if( aType2==GeomAbs_Cone ) {
473 TolArc = 0.0001;
474 //TolArc = TolTang = 0.0001;
475 hasCone = Standard_True;
476 }
477 }
478 //
479 else if ((aType1==GeomAbs_Cylinder||
480 aType1==GeomAbs_Cone ||
481 aType1==GeomAbs_Torus) &&
482 aType2==GeomAbs_Plane) {
483 Standard_Real dU, dV;
484 //F1
485 BRepTools::UVBounds(F1, umin, umax, vmin, vmax);
486 CorrectSurfaceBoundaries(F1, (aTolF1 + aTolF2) * 2., umin, umax, vmin, vmax);
487 myHS1->ChangeSurface().Load(S1, umin, umax, vmin, vmax);
488 // F2
489 BRepTools::UVBounds(F2, umin, umax, vmin, vmax);
490 dU=0.1*(umax-umin);
491 dV=0.1*(vmax-vmin);
492 umin=umin-dU;
493 umax=umax+dU;
494 vmin=vmin-dV;
495 vmax=vmax+dV;
496 myHS2->ChangeSurface().Load(S2, umin, umax, vmin, vmax);
497 //
498 if( aType1==GeomAbs_Cone ) {
499 TolArc = 0.0001;
500 //TolArc = TolTang = 0.0001;
501 hasCone = Standard_True;
502 }
503 }
504
505 //
506 else {
507 BRepTools::UVBounds(F1, umin, umax, vmin, vmax);
508 //
509 CorrectSurfaceBoundaries(F1, (aTolF1 + aTolF2) * 2., umin, umax, vmin, vmax);
510 //
511 myHS1->ChangeSurface().Load(S1, umin, umax, vmin, vmax);
512 //
513 BRepTools::UVBounds(F2, umin, umax, vmin, vmax);
514 //
515 CorrectSurfaceBoundaries(F2, (aTolF1 + aTolF2) * 2., umin, umax, vmin, vmax);
516 //
517 myHS2->ChangeSurface().Load(S2, umin, umax, vmin, vmax);
518 }
519 //
520 dom1 = new IntTools_TopolTool(myHS1);
521 dom2 = new IntTools_TopolTool(myHS2);
522 //
523 myLConstruct.Load(dom1, dom2, myHS1, myHS2);
524 //
525 Deflection = (hasCone) ? 0.085 : 0.1;
526 UVMaxStep = 0.001;
527 //
528 myIntersector.SetTolerances(TolArc, TolTang, UVMaxStep, Deflection);
529 //
530 RestrictLine = Standard_False;
531 //
532 if((myHS1->IsUClosed() && !myHS1->IsUPeriodic()) ||
533 (myHS1->IsVClosed() && !myHS1->IsVPeriodic()) ||
534 (myHS2->IsUClosed() && !myHS2->IsUPeriodic()) ||
535 (myHS2->IsVClosed() && !myHS2->IsVPeriodic())) {
536 RestrictLine = Standard_True;
537 }
538 //
539 if(((aType1 != GeomAbs_BSplineSurface) &&
540 (aType1 != GeomAbs_BezierSurface) &&
541 (aType1 != GeomAbs_OtherSurface)) &&
542 ((aType2 != GeomAbs_BSplineSurface) &&
543 (aType2 != GeomAbs_BezierSurface) &&
544 (aType2 != GeomAbs_OtherSurface))) {
545 RestrictLine = Standard_True;
546 //
547 if ((aType1 == GeomAbs_Torus) ||
548 (aType2 == GeomAbs_Torus) ) {
549 myListOfPnts.Clear();
550 }
551 }
552 //
553 if(!RestrictLine) {
554 TopExp_Explorer aExp;
555 //
556 for(i = 0; (!RestrictLine) && (i < 2); i++) {
557 const TopoDS_Face& aF=(!i) ? myFace1 : myFace2;
558 aExp.Init(aF, TopAbs_EDGE);
559 for(; aExp.More(); aExp.Next()) {
560 const TopoDS_Edge& aE=TopoDS::Edge(aExp.Current());
561 //
562 if(BRep_Tool::Degenerated(aE)) {
563 RestrictLine = Standard_True;
564 break;
565 }
566 }
567 }
568 }
569 //
570 myIntersector.Perform(myHS1, dom1, myHS2, dom2,
571 TolArc, TolTang,
572 myListOfPnts, RestrictLine);
573 //
574 myIsDone = myIntersector.IsDone();
575 if (myIsDone) {
576 myTangentFaces=myIntersector.TangentFaces();
577 if (myTangentFaces) {
578 return;
579 }
580 //
581 if(RestrictLine) {
582 myListOfPnts.Clear(); // to use LineConstructor
583 }
584 //
585 aNbLin = myIntersector.NbLines();
586 for (i=1; i<=aNbLin; ++i) {
587 MakeCurve(i, dom1, dom2);
588 }
589 //
590 ComputeTolReached3d();
591 //
592 Standard_Real U1,V1,U2,V2;
593 IntTools_PntOnFace aPntOnF1, aPntOnF2;
594 //
595 aNbPnts=myIntersector.NbPnts();
596 for (i=1; i<=aNbPnts; ++i) {
597 const IntSurf_PntOn2S& aISPnt=myIntersector.Point(i).PntOn2S();
598 const gp_Pnt& aPnt=aISPnt.Value();
599 aISPnt.Parameters(U1,V1,U2,V2);
600
601 aPntOnF1.Init(myFace1, aPnt, U1,V1);
602 aPntOnF2.Init(myFace2, aPnt, U2,V2);
603
604 IntTools_PntOn2Faces aPntOn2Faces(aPntOnF1, aPntOnF2);
605 myPnts.Append(aPntOn2Faces);
606 }
607 //
608 }
609}
610//=======================================================================
611//function :ComputeTolReached3d
612//purpose :
613//=======================================================================
614 void IntTools_FaceFace::ComputeTolReached3d()
615{
616 Standard_Integer aNbLin;
617 GeomAbs_SurfaceType aType1, aType2;
618 //
619 aNbLin=myIntersector.NbLines();
620 //
621 aType1=myHS1->Surface().GetType();
622 aType2=myHS2->Surface().GetType();
623 //
624 if (aNbLin==2 &&
625 aType1==GeomAbs_Cylinder &&
626 aType2==GeomAbs_Cylinder) {
627 Handle(IntPatch_Line) aIL1, aIL2;
628 IntPatch_IType aTL1, aTL2;
629 //
630 aIL1=myIntersector.Line(1);
631 aIL2=myIntersector.Line(2);
632 aTL1=aIL1->ArcType();
633 aTL2=aIL2->ArcType();
634 if (aTL1==IntPatch_Lin && aTL2==IntPatch_Lin) {
635 Standard_Real aD, aDTresh, dTol;
636 gp_Lin aL1, aL2;
637 //
638 dTol=1.e-8;
639 aDTresh=1.5e-6;
640 //
641 aL1=Handle(IntPatch_GLine)::DownCast(aIL1)->Line();
642 aL2=Handle(IntPatch_GLine)::DownCast(aIL2)->Line();
643 aD=aL1.Distance(aL2);
644 aD=0.5*aD;
645 if (aD<aDTresh) {
646 myTolReached3d=aD+dTol;
647 }
648 }
649 }
650 //PKV 904/G3 f
651 if (aType1==GeomAbs_Plane &&
652 aType2==GeomAbs_Plane) {
653 Standard_Real aTolF1, aTolF2, aTolFMax, aTolTresh;
654 //
655 aTolTresh=1.e-7;
656 //
657 aTolF1 = BRep_Tool::Tolerance(myFace1);
658 aTolF2 = BRep_Tool::Tolerance(myFace2);
659 aTolFMax=Max(aTolF1, aTolF2);
660 //
661 if (aTolFMax>aTolTresh) {
662 myTolReached3d=aTolFMax;
663 }
664 }
665 //PKV t
666
667 //IFV Bug OCC20297
668 if((aType1 == GeomAbs_Cylinder && aType2 == GeomAbs_Plane) ||
669 (aType2 == GeomAbs_Cylinder && aType1 == GeomAbs_Plane)) {
670 if(aNbLin == 1) {
671 const Handle(IntPatch_Line)& aIL1 = myIntersector.Line(1);
672 if(aIL1->ArcType() == IntPatch_Circle) {
673 gp_Circ aCir = Handle(IntPatch_GLine)::DownCast(aIL1)->Circle();
674 gp_XYZ aCirDir = aCir.Axis().Direction().XYZ();
675 gp_XYZ aPlDir;
676 gp_Pln aPln;
677 if(aType1 == GeomAbs_Plane) {
678 aPln = myHS1->Surface().Plane();
679 }
680 else {
681 aPln = myHS2->Surface().Plane();
682 }
683 aPlDir = aPln.Axis().Direction().XYZ();
684 Standard_Real cs = aCirDir*aPlDir;
685 if(cs < 0.) aPlDir.Reverse();
686 Standard_Real eps = 1.e-14;
687 if(!aPlDir.IsEqual(aCirDir, eps)) {
688 Standard_Integer aNbP = 11;
689 Standard_Real dt = 2.*PI / (aNbP - 1), t;
690 for(t = 0.; t < 2.*PI; t += dt) {
691 Standard_Real d = aPln.Distance(ElCLib::Value(t, aCir));
692 if(myTolReached3d < d) myTolReached3d = d;
693 }
694 myTolReached3d *= 1.1;
695 }
696 } //aIL1->ArcType() == IntPatch_Circle
697 } //aNbLin == 1
698 } // aType1 == GeomAbs_Cylinder && aType2 == GeomAbs_Plane) ...
699 //End IFV Bug OCC20297
700}
701//=======================================================================
702//function : MakeCurve
703//purpose :
704//=======================================================================
705 void IntTools_FaceFace::MakeCurve(const Standard_Integer Index,
706 const Handle(Adaptor3d_TopolTool)& dom1,
707 const Handle(Adaptor3d_TopolTool)& dom2)
708{
709 Standard_Boolean bDone, rejectSurface, reApprox, bAvoidLineConstructor;
710 Standard_Boolean ok;
711 Standard_Integer i, j, aNbParts;
712 Standard_Real fprm, lprm;
713 Standard_Real Tolpc;
714 Handle(IntPatch_Line) L;
715 IntPatch_IType typl;
716 Handle(Geom_Curve) newc;
717 //
718 const Standard_Real TOLCHECK =0.0000001;
719 const Standard_Real TOLANGCHECK=0.1;
720 //
721 rejectSurface = Standard_False;
722 reApprox = Standard_False;
723
724 reapprox:;
725
726 Tolpc = myTolApprox;
727 bAvoidLineConstructor = Standard_False;
728 L = myIntersector.Line(Index);
729 typl = L->ArcType();
730 //
731 if(typl==IntPatch_Walking) {
732 Handle(IntPatch_Line) anewL;
733 //
734 const Handle(IntPatch_WLine)& aWLine=
735 Handle(IntPatch_WLine)::DownCast(L);
736 //
737 anewL = ComputePurgedWLine(aWLine);
738 if(anewL.IsNull()) {
739 return;
740 }
741 L = anewL;
742 //
743 if(!myListOfPnts.IsEmpty()) {
744 bAvoidLineConstructor = Standard_True;
745 }
746
747 Standard_Integer nbp = aWLine->NbPnts();
748 const IntSurf_PntOn2S& p1 = aWLine->Point(1);
749 const IntSurf_PntOn2S& p2 = aWLine->Point(nbp);
750
751 const gp_Pnt& P1 = p1.Value();
752 const gp_Pnt& P2 = p2.Value();
753
754 if(P1.SquareDistance(P2) < 1.e-14) {
755 bAvoidLineConstructor = Standard_False;
756 }
757
758 }
759 //
760 // Line Constructor
761 if(!bAvoidLineConstructor) {
762 myLConstruct.Perform(L);
763 //
764 bDone=myLConstruct.IsDone();
765 aNbParts=myLConstruct.NbParts();
766 if (!bDone|| !aNbParts) {
767 return;
768 }
769 }
770 // Do the Curve
771
772
773 typl=L->ArcType();
774 switch (typl) {
775 //########################################
776 // Line, Parabola, Hyperbola
777 //########################################
778 case IntPatch_Lin:
779 case IntPatch_Parabola:
780 case IntPatch_Hyperbola: {
781 if (typl == IntPatch_Lin) {
782 newc =
783 new Geom_Line (Handle(IntPatch_GLine)::DownCast(L)->Line());
784 }
785
786 else if (typl == IntPatch_Parabola) {
787 newc =
788 new Geom_Parabola(Handle(IntPatch_GLine)::DownCast(L)->Parabola());
789 }
790
791 else if (typl == IntPatch_Hyperbola) {
792 newc =
793 new Geom_Hyperbola (Handle(IntPatch_GLine)::DownCast(L)->Hyperbola());
794 }
795 //
796 // myTolReached3d
797 if (typl == IntPatch_Lin) {
798 TolR3d (myFace1, myFace2, myTolReached3d);
799 }
800 //
801 aNbParts=myLConstruct.NbParts();
802 for (i=1; i<=aNbParts; i++) {
803 myLConstruct.Part(i, fprm, lprm);
804
805 if (!Precision::IsNegativeInfinite(fprm) &&
806 !Precision::IsPositiveInfinite(lprm)) {
807 //
808 IntTools_Curve aCurve;
809 //
810 Handle(Geom_TrimmedCurve) aCT3D=new Geom_TrimmedCurve(newc, fprm, lprm);
811 aCurve.SetCurve(aCT3D);
812 if (typl == IntPatch_Parabola) {
813 Standard_Real aTolF1, aTolF2, aTolBase;
814
815 aTolF1 = BRep_Tool::Tolerance(myFace1);
816 aTolF2 = BRep_Tool::Tolerance(myFace2);
817 aTolBase=aTolF1+aTolF2;
818 myTolReached3d=IntTools_Tools::CurveTolerance(aCT3D, aTolBase);
819 }
820 //
821 aCurve.SetCurve(new Geom_TrimmedCurve(newc, fprm, lprm));
822 if(myApprox1) {
823 Handle (Geom2d_Curve) C2d;
824 BuildPCurves(fprm, lprm, Tolpc, myHS1->ChangeSurface().Surface(), newc, C2d);
825 if(Tolpc>myTolReached2d || myTolReached2d==0.) {
826 myTolReached2d=Tolpc;
827 }
828 //
829 aCurve.SetFirstCurve2d(new Geom2d_TrimmedCurve(C2d,fprm,lprm));
830 }
831 else {
832 Handle(Geom2d_BSplineCurve) H1;
833 //
834 aCurve.SetFirstCurve2d(H1);
835 }
836
837 if(myApprox2) {
838 Handle (Geom2d_Curve) C2d;
839 BuildPCurves(fprm,lprm,Tolpc,myHS2->ChangeSurface().Surface(),newc,C2d);
840 if(Tolpc>myTolReached2d || myTolReached2d==0.) {
841 myTolReached2d=Tolpc;
842 }
843 //
844 aCurve.SetSecondCurve2d(new Geom2d_TrimmedCurve(C2d,fprm,lprm));
845 }
846 else {
847 Handle(Geom2d_BSplineCurve) H1;
848 //
849 aCurve.SetSecondCurve2d(H1);
850 }
851 mySeqOfCurve.Append(aCurve);
852 } // end of if (!Precision::IsNegativeInfinite(fprm) && !Precision::IsPositiveInfinite(lprm))
853
854 else {
81bba717 855 // check if keep
7fd59977 856 //
857 Standard_Boolean bFNIt, bLPIt;
858 Standard_Real aTestPrm, dT=100.;
859
860 bFNIt=Precision::IsNegativeInfinite(fprm);
861 bLPIt=Precision::IsPositiveInfinite(lprm);
862
863 aTestPrm=0.;
864
865 if (bFNIt && !bLPIt) {
866 aTestPrm=lprm-dT;
867 }
868 else if (!bFNIt && bLPIt) {
869 aTestPrm=fprm+dT;
870 }
871
872 gp_Pnt ptref(newc->Value(aTestPrm));
873 //
874
875 Standard_Real u1, v1, u2, v2, Tol;
876
877 Tol = Precision::Confusion();
878 Parameters(myHS1, myHS2, ptref, u1, v1, u2, v2);
879 ok = (dom1->Classify(gp_Pnt2d(u1, v1), Tol) != TopAbs_OUT);
880 if(ok) {
881 ok = (dom2->Classify(gp_Pnt2d(u2,v2),Tol) != TopAbs_OUT);
882 }
883 if (ok) {
884 Handle(Geom2d_BSplineCurve) H1;
885 mySeqOfCurve.Append(IntTools_Curve(newc, H1, H1));
886 }
887 }
888 }// end of for (i=1; i<=myLConstruct.NbParts(); i++)
889 }// case IntPatch_Lin: case IntPatch_Parabola: case IntPatch_Hyperbola:
890 break;
891
892 //########################################
893 // Circle and Ellipse
894 //########################################
895 case IntPatch_Circle:
896 case IntPatch_Ellipse: {
897
898 if (typl == IntPatch_Circle) {
899 newc = new Geom_Circle
900 (Handle(IntPatch_GLine)::DownCast(L)->Circle());
901 }
902 else { //IntPatch_Ellipse
903 newc = new Geom_Ellipse
904 (Handle(IntPatch_GLine)::DownCast(L)->Ellipse());
905 }
906 //
907 // myTolReached3d
908 TolR3d (myFace1, myFace2, myTolReached3d);
909 //
910 aNbParts=myLConstruct.NbParts();
911 //
912 Standard_Real aPeriod, aNul;
913 TColStd_SequenceOfReal aSeqFprm, aSeqLprm;
914
915 aNul=0.;
916 aPeriod=PI+PI;
917
918 for (i=1; i<=aNbParts; i++) {
919 myLConstruct.Part(i, fprm, lprm);
920
921 if (fprm < aNul && lprm > aNul) {
922 // interval that goes through 0. is divided on two intervals;
923 while (fprm<aNul || fprm>aPeriod) fprm=fprm+aPeriod;
924 while (lprm<aNul || lprm>aPeriod) lprm=lprm+aPeriod;
925 //
926 if((aPeriod - fprm) > Tolpc) {
927 aSeqFprm.Append(fprm);
928 aSeqLprm.Append(aPeriod);
929 }
930 else {
931 gp_Pnt P1 = newc->Value(fprm);
932 gp_Pnt P2 = newc->Value(aPeriod);
933 Standard_Real aTolDist = BRep_Tool::Tolerance(myFace1) + BRep_Tool::Tolerance(myFace2);
934 aTolDist = (myTolReached3d > aTolDist) ? myTolReached3d : aTolDist;
935
936 if(P1.Distance(P2) > aTolDist) {
937 Standard_Real anewpar = fprm;
938
939 if(ParameterOutOfBoundary(fprm, newc, myFace1, myFace2, lprm, Standard_False, anewpar)) {
940 fprm = anewpar;
941 }
942 aSeqFprm.Append(fprm);
943 aSeqLprm.Append(aPeriod);
944 }
945 }
946
947 //
948 if((lprm - aNul) > Tolpc) {
949 aSeqFprm.Append(aNul);
950 aSeqLprm.Append(lprm);
951 }
952 else {
953 gp_Pnt P1 = newc->Value(aNul);
954 gp_Pnt P2 = newc->Value(lprm);
955 Standard_Real aTolDist = BRep_Tool::Tolerance(myFace1) + BRep_Tool::Tolerance(myFace2);
956 aTolDist = (myTolReached3d > aTolDist) ? myTolReached3d : aTolDist;
957
958 if(P1.Distance(P2) > aTolDist) {
959 Standard_Real anewpar = lprm;
960
961 if(ParameterOutOfBoundary(lprm, newc, myFace1, myFace2, fprm, Standard_True, anewpar)) {
962 lprm = anewpar;
963 }
964 aSeqFprm.Append(aNul);
965 aSeqLprm.Append(lprm);
966 }
967 }
968 }
969 else {
970 // usual interval
971 aSeqFprm.Append(fprm);
972 aSeqLprm.Append(lprm);
973 }
974 }
975
976 //
977 aNbParts=aSeqFprm.Length();
978 for (i=1; i<=aNbParts; i++) {
979 fprm=aSeqFprm(i);
980 lprm=aSeqLprm(i);
981 //
982 Standard_Real aRealEpsilon=RealEpsilon();
983 if (Abs(fprm) > aRealEpsilon || Abs(lprm-2.*PI) > aRealEpsilon) {
984 //==============================================
985 ////
986 IntTools_Curve aCurve;
987 Handle(Geom_TrimmedCurve) aTC3D=new Geom_TrimmedCurve(newc,fprm,lprm);
988 aCurve.SetCurve(aTC3D);
989 fprm=aTC3D->FirstParameter();
990 lprm=aTC3D->LastParameter ();
991 ////
992 if (typl == IntPatch_Circle || typl == IntPatch_Ellipse) {////
993 if(myApprox1) {
994 Handle (Geom2d_Curve) C2d;
995 BuildPCurves(fprm,lprm,Tolpc,myHS1->ChangeSurface().Surface(),newc,C2d);
996 if(Tolpc>myTolReached2d || myTolReached2d==0) {
997 myTolReached2d=Tolpc;
998 }
999 //
1000 aCurve.SetFirstCurve2d(C2d);
1001 }
1002 else { ////
1003 Handle(Geom2d_BSplineCurve) H1;
1004 aCurve.SetFirstCurve2d(H1);
1005 }
1006
1007
1008 if(myApprox2) {
1009 Handle (Geom2d_Curve) C2d;
1010 BuildPCurves(fprm,lprm,Tolpc,myHS2->ChangeSurface().Surface(),newc,C2d);
1011 if(Tolpc>myTolReached2d || myTolReached2d==0) {
1012 myTolReached2d=Tolpc;
1013 }
1014 //
1015 aCurve.SetSecondCurve2d(C2d);
1016 }
1017 else {
1018 Handle(Geom2d_BSplineCurve) H1;
1019 aCurve.SetSecondCurve2d(H1);
1020 }
1021 }
1022
1023 else {
1024 Handle(Geom2d_BSplineCurve) H1;
1025 aCurve.SetFirstCurve2d(H1);
1026 aCurve.SetSecondCurve2d(H1);
1027 }
1028 mySeqOfCurve.Append(aCurve);
1029 //==============================================
1030 } //if (Abs(fprm) > RealEpsilon() || Abs(lprm-2.*PI) > RealEpsilon())
1031
1032 else {
1033 // on regarde si on garde
1034 //
1035 if (aNbParts==1) {
1036// if (Abs(fprm) < RealEpsilon() && Abs(lprm-2.*PI) < RealEpsilon()) {
1037 if (Abs(fprm) <= aRealEpsilon && Abs(lprm-2.*PI) <= aRealEpsilon) {
1038 IntTools_Curve aCurve;
1039 Handle(Geom_TrimmedCurve) aTC3D=new Geom_TrimmedCurve(newc,fprm,lprm);
1040 aCurve.SetCurve(aTC3D);
1041 fprm=aTC3D->FirstParameter();
1042 lprm=aTC3D->LastParameter ();
1043
1044 if(myApprox1) {
1045 Handle (Geom2d_Curve) C2d;
1046 BuildPCurves(fprm,lprm,Tolpc,myHS1->ChangeSurface().Surface(),newc,C2d);
1047 if(Tolpc>myTolReached2d || myTolReached2d==0) {
1048 myTolReached2d=Tolpc;
1049 }
1050 //
1051 aCurve.SetFirstCurve2d(C2d);
1052 }
1053 else { ////
1054 Handle(Geom2d_BSplineCurve) H1;
1055 aCurve.SetFirstCurve2d(H1);
1056 }
1057
1058 if(myApprox2) {
1059 Handle (Geom2d_Curve) C2d;
1060 BuildPCurves(fprm,lprm,Tolpc,myHS2->ChangeSurface().Surface(),newc,C2d);
1061 if(Tolpc>myTolReached2d || myTolReached2d==0) {
1062 myTolReached2d=Tolpc;
1063 }
1064 //
1065 aCurve.SetSecondCurve2d(C2d);
1066 }
1067 else {
1068 Handle(Geom2d_BSplineCurve) H1;
1069 aCurve.SetSecondCurve2d(H1);
1070 }
1071 mySeqOfCurve.Append(aCurve);
1072 break;
1073 }
1074 }
1075 //
1076 Standard_Real aTwoPIdiv17, u1, v1, u2, v2, Tol;
1077
1078 aTwoPIdiv17=2.*PI/17.;
1079
1080 for (j=0; j<=17; j++) {
1081 gp_Pnt ptref (newc->Value (j*aTwoPIdiv17));
1082 Tol = Precision::Confusion();
1083
1084 Parameters(myHS1, myHS2, ptref, u1, v1, u2, v2);
1085 ok = (dom1->Classify(gp_Pnt2d(u1,v1),Tol) != TopAbs_OUT);
1086 if(ok) {
1087 ok = (dom2->Classify(gp_Pnt2d(u2,v2),Tol) != TopAbs_OUT);
1088 }
1089 if (ok) {
1090 IntTools_Curve aCurve;
1091 aCurve.SetCurve(newc);
1092 //==============================================
1093 if (typl == IntPatch_Circle || typl == IntPatch_Ellipse) {
1094
1095 if(myApprox1) {
1096 Handle (Geom2d_Curve) C2d;
1097 BuildPCurves(fprm, lprm, Tolpc, myHS1->ChangeSurface().Surface(), newc, C2d);
1098 if(Tolpc>myTolReached2d || myTolReached2d==0) {
1099 myTolReached2d=Tolpc;
1100 }
1101 //
1102 aCurve.SetFirstCurve2d(C2d);
1103 }
1104 else {
1105 Handle(Geom2d_BSplineCurve) H1;
1106 aCurve.SetFirstCurve2d(H1);
1107 }
1108
1109 if(myApprox2) {
1110 Handle (Geom2d_Curve) C2d;
1111 BuildPCurves(fprm, lprm, Tolpc,myHS2->ChangeSurface().Surface(), newc, C2d);
1112 if(Tolpc>myTolReached2d || myTolReached2d==0) {
1113 myTolReached2d=Tolpc;
1114 }
1115 //
1116 aCurve.SetSecondCurve2d(C2d);
1117 }
1118
1119 else {
1120 Handle(Geom2d_BSplineCurve) H1;
1121 aCurve.SetSecondCurve2d(H1);
1122 }
1123 }// end of if (typl == IntPatch_Circle || typl == IntPatch_Ellipse)
1124
1125 else {
1126 Handle(Geom2d_BSplineCurve) H1;
1127 //
1128 aCurve.SetFirstCurve2d(H1);
1129 aCurve.SetSecondCurve2d(H1);
1130 }
1131 //==============================================
1132 //
1133 mySeqOfCurve.Append(aCurve);
1134 break;
1135
1136 }// end of if (ok) {
1137 }// end of for (Standard_Integer j=0; j<=17; j++)
81bba717 1138 }// end of else { check if keep
7fd59977 1139 }// for (i=1; i<=myLConstruct.NbParts(); i++)
1140 }// IntPatch_Circle: IntPatch_Ellipse:
1141 break;
1142
1143 case IntPatch_Analytic: {
1144 IntSurf_Quadric quad1,quad2;
1145 GeomAbs_SurfaceType typs = myHS1->Surface().GetType();
1146
1147 switch (typs) {
1148 case GeomAbs_Plane:
1149 quad1.SetValue(myHS1->Surface().Plane());
1150 break;
1151 case GeomAbs_Cylinder:
1152 quad1.SetValue(myHS1->Surface().Cylinder());
1153 break;
1154 case GeomAbs_Cone:
1155 quad1.SetValue(myHS1->Surface().Cone());
1156 break;
1157 case GeomAbs_Sphere:
1158 quad1.SetValue(myHS1->Surface().Sphere());
1159 break;
1160 default:
1161 Standard_ConstructionError::Raise("GeomInt_IntSS::MakeCurve 1");
1162 }
1163
1164 typs = myHS2->Surface().GetType();
1165
1166 switch (typs) {
1167 case GeomAbs_Plane:
1168 quad2.SetValue(myHS2->Surface().Plane());
1169 break;
1170 case GeomAbs_Cylinder:
1171 quad2.SetValue(myHS2->Surface().Cylinder());
1172 break;
1173 case GeomAbs_Cone:
1174 quad2.SetValue(myHS2->Surface().Cone());
1175 break;
1176 case GeomAbs_Sphere:
1177 quad2.SetValue(myHS2->Surface().Sphere());
1178 break;
1179 default:
1180 Standard_ConstructionError::Raise("GeomInt_IntSS::MakeCurve 2");
1181 }
1182 //
1183 //=========
1184 IntPatch_ALineToWLine convert (quad1, quad2);
1185
1186 if (!myApprox) {
1187 aNbParts=myLConstruct.NbParts();
1188 for (i=1; i<=aNbParts; i++) {
1189 myLConstruct.Part(i, fprm, lprm);
1190 Handle(IntPatch_WLine) WL =
1191 convert.MakeWLine(Handle(IntPatch_ALine)::DownCast(L), fprm, lprm);
1192 //
1193 Handle(Geom2d_BSplineCurve) H1;
1194 Handle(Geom2d_BSplineCurve) H2;
1195
1196 if(myApprox1) {
1197 H1 = MakeBSpline2d(WL, 1, WL->NbPnts(), Standard_True);
1198 }
1199
1200 if(myApprox2) {
1201 H2 = MakeBSpline2d(WL, 1, WL->NbPnts(), Standard_False);
1202 }
1203 //
1204 mySeqOfCurve.Append(IntTools_Curve(MakeBSpline(WL,1,WL->NbPnts()), H1, H2));
1205 }
1206 } // if (!myApprox)
1207
1208 else { // myApprox=TRUE
1209 GeomInt_WLApprox theapp3d;
1210 //
1211 Standard_Real tol2d = myTolApprox;
1212 //
1213 theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_True);
1214
1215 aNbParts=myLConstruct.NbParts();
1216 for (i=1; i<=aNbParts; i++) {
1217 myLConstruct.Part(i, fprm, lprm);
1218 Handle(IntPatch_WLine) WL =
1219 convert.MakeWLine(Handle(IntPatch_ALine):: DownCast(L),fprm,lprm);
1220
1221 theapp3d.Perform(myHS1,myHS2,WL,Standard_True,myApprox1,myApprox2, 1, WL->NbPnts());
1222
1223 if (!theapp3d.IsDone()) {
1224 //
1225 Handle(Geom2d_BSplineCurve) H1;
1226 Handle(Geom2d_BSplineCurve) H2;
1227
1228 if(myApprox1) {
1229 H1 = MakeBSpline2d(WL, 1, WL->NbPnts(), Standard_True);
1230 }
1231
1232 if(myApprox2) {
1233 H2 = MakeBSpline2d(WL, 1, WL->NbPnts(), Standard_False);
1234 }
1235 //
1236 mySeqOfCurve.Append(IntTools_Curve(MakeBSpline(WL,1,WL->NbPnts()), H1, H2));
1237 }
1238
1239 else {
1240 if(myApprox1 || myApprox2) {
1241 if( theapp3d.TolReached2d()>myTolReached2d || myTolReached2d==0) {
1242 myTolReached2d = theapp3d.TolReached2d();
1243 }
1244 }
1245
1246 if( theapp3d.TolReached3d()>myTolReached3d || myTolReached3d==0) {
1247 myTolReached3d = theapp3d.TolReached3d();
1248 }
1249
1250 Standard_Integer aNbMultiCurves, nbpoles;
1251 aNbMultiCurves=theapp3d.NbMultiCurves();
1252 for (j=1; j<=aNbMultiCurves; j++) {
1253 const AppParCurves_MultiBSpCurve& mbspc = theapp3d.Value(j);
1254 nbpoles = mbspc.NbPoles();
1255
1256 TColgp_Array1OfPnt tpoles(1, nbpoles);
1257 mbspc.Curve(1, tpoles);
1258 Handle(Geom_BSplineCurve) BS=new Geom_BSplineCurve(tpoles,
1259 mbspc.Knots(),
1260 mbspc.Multiplicities(),
1261 mbspc.Degree());
1262
1263 GeomLib_CheckBSplineCurve Check(BS,TOLCHECK,TOLANGCHECK);
1264 Check.FixTangent(Standard_True,Standard_True);
1265 //
1266 IntTools_Curve aCurve;
1267 aCurve.SetCurve(BS);
1268
1269 if(myApprox1) {
1270 TColgp_Array1OfPnt2d tpoles2d(1,nbpoles);
1271 mbspc.Curve(2,tpoles2d);
1272 Handle(Geom2d_BSplineCurve) BS2=new Geom2d_BSplineCurve(tpoles2d,
1273 mbspc.Knots(),
1274 mbspc.Multiplicities(),
1275 mbspc.Degree());
1276
1277 GeomLib_Check2dBSplineCurve newCheck(BS2,TOLCHECK,TOLANGCHECK);
1278 newCheck.FixTangent(Standard_True,Standard_True);
1279 //
1280 aCurve.SetFirstCurve2d(BS2);
1281 }
1282 else {
1283 Handle(Geom2d_BSplineCurve) H1;
1284 aCurve.SetFirstCurve2d(H1);
1285 }
1286
1287 if(myApprox2) {
1288 TColgp_Array1OfPnt2d tpoles2d(1, nbpoles);
1289 Standard_Integer TwoOrThree;
1290 TwoOrThree=myApprox1 ? 3 : 2;
1291 mbspc.Curve(TwoOrThree, tpoles2d);
1292 Handle(Geom2d_BSplineCurve) BS2 =new Geom2d_BSplineCurve(tpoles2d,
1293 mbspc.Knots(),
1294 mbspc.Multiplicities(),
1295 mbspc.Degree());
1296
1297 GeomLib_Check2dBSplineCurve newCheck(BS2,TOLCHECK,TOLANGCHECK);
1298 newCheck.FixTangent(Standard_True,Standard_True);
1299 //
1300 aCurve.SetSecondCurve2d(BS2);
1301 }
1302 else {
1303 Handle(Geom2d_BSplineCurve) H2;
1304 aCurve.SetSecondCurve2d(H2);
1305 }
1306 //
1307 mySeqOfCurve.Append(aCurve);
1308
1309 }// for (j=1; j<=aNbMultiCurves; j++) {
1310 }// else from if (!theapp3d.IsDone())
1311 }// for (i=1; i<=aNbParts; i++) {
1312 }// else { // myApprox=TRUE
1313 }// case IntPatch_Analytic:
1314 break;
1315
1316 case IntPatch_Walking:{
1317 Handle(IntPatch_WLine) WL =
1318 Handle(IntPatch_WLine)::DownCast(L);
1319 //
1320 Standard_Integer ifprm, ilprm;
1321 //
1322 if (!myApprox) {
1323 aNbParts = 1;
1324 if(!bAvoidLineConstructor){
1325 aNbParts=myLConstruct.NbParts();
1326 }
1327 for (i=1; i<=aNbParts; ++i) {
1328 Handle(Geom2d_BSplineCurve) H1, H2;
1329 Handle(Geom_Curve) aBSp;
1330 //
1331 if(bAvoidLineConstructor) {
1332 ifprm = 1;
1333 ilprm = WL->NbPnts();
1334 }
1335 else {
1336 myLConstruct.Part(i, fprm, lprm);
1337 ifprm=(Standard_Integer)fprm;
1338 ilprm=(Standard_Integer)lprm;
1339 }
1340 //
1341 if(myApprox1) {
1342 H1 = MakeBSpline2d(WL, ifprm, ilprm, Standard_True);
1343 }
1344 //
1345 if(myApprox2) {
1346 H2 = MakeBSpline2d(WL, ifprm, ilprm, Standard_False);
1347 }
1348 //
1349 aBSp=MakeBSpline(WL, ifprm, ilprm);
1350 IntTools_Curve aIC(aBSp, H1, H2);
1351 mySeqOfCurve.Append(aIC);
1352 }// for (i=1; i<=aNbParts; ++i) {
1353 }// if (!myApprox) {
1354 //
1355 else { // X
1356 Standard_Boolean bIsDecomposited;
1357 Standard_Integer nbiter, aNbSeqOfL;
1358 Standard_Real tol2d;
1359 IntPatch_SequenceOfLine aSeqOfL;
1360 GeomInt_WLApprox theapp3d;
1361 Approx_ParametrizationType aParType = Approx_ChordLength;
1362 //
1363 Standard_Boolean anApprox1 = myApprox1;
1364 Standard_Boolean anApprox2 = myApprox2;
1365
1366 tol2d = myTolApprox;
1367
1368 GeomAbs_SurfaceType typs1, typs2;
1369 typs1 = myHS1->Surface().GetType();
1370 typs2 = myHS2->Surface().GetType();
1371 Standard_Boolean anWithPC = Standard_True;
1372
1373 if(typs1 == GeomAbs_Cylinder && typs2 == GeomAbs_Sphere) {
1374 anWithPC =
1375 ApproxWithPCurves(myHS1->Surface().Cylinder(), myHS2->Surface().Sphere());
1376 }
1377 else if (typs1 == GeomAbs_Sphere && typs2 == GeomAbs_Cylinder) {
1378 anWithPC =
1379 ApproxWithPCurves(myHS2->Surface().Cylinder(), myHS1->Surface().Sphere());
1380 }
1381 if(!anWithPC) {
1382 //aParType = Approx_Centripetal;
1383 myTolApprox = 1.e-5;
1384 anApprox1 = Standard_False;
1385 anApprox2 = Standard_False;
1386 //
1387 tol2d = myTolApprox;
1388 }
1389
1390 if(myHS1 == myHS2) {
1391 //
1392 theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_False, aParType);
1393 rejectSurface = Standard_True;
1394 }
1395 else {
1396 if(reApprox && !rejectSurface)
1397 theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_False, aParType);
1398 else {
1399 //modified by NIZNHY-PKV Thu Sep 23 08:34:09 2010f
1400 Standard_Integer iDegMax, iDegMin, iNbIterMax;
1401 //
1402 ApproxParameters(myHS1, myHS2, iDegMin, iDegMax, iNbIterMax, anWithPC);
1403 if(!anWithPC) {
1404 //myTolApprox = 1.e-5;
1405 anApprox1 = Standard_False;
1406 anApprox2 = Standard_False;
1407 tol2d = myTolApprox;
1408 }
1409 //
1410 theapp3d.SetParameters(myTolApprox, tol2d, iDegMin, iDegMax, iNbIterMax,
1411 Standard_True, aParType);
1412 //theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_True, aParType);
1413 //modified by NIZNHY-PKV Thu Sep 23 08:36:17 2010t
1414 }
1415 }
1416 //
1417 Standard_Real aReachedTol = Precision::Confusion();
1418 bIsDecomposited=DecompositionOfWLine(WL,
1419 myHS1,
1420 myHS2,
1421 myFace1,
1422 myFace2,
1423 myLConstruct,
1424 bAvoidLineConstructor,
1425 aSeqOfL,
1426 aReachedTol);
1427 if ( bIsDecomposited && ( myTolReached3d < aReachedTol ) )
1428 myTolReached3d = aReachedTol;
1429
1430 //
1431 aNbSeqOfL=aSeqOfL.Length();
1432 //
1433 if (bIsDecomposited) {
1434 nbiter=aNbSeqOfL;
1435 }
1436 else {
1437 nbiter=1;
1438 aNbParts=1;
1439 if (!bAvoidLineConstructor) {
1440 aNbParts=myLConstruct.NbParts();
1441 nbiter=aNbParts;
1442 }
1443 }
1444 //
1445 // nbiter=(bIsDecomposited) ? aSeqOfL.Length() :
1446 // ((bAvoidLineConstructor) ? 1 :aNbParts);
1447 //
1448 for(i = 1; i <= nbiter; ++i) {
1449 if(bIsDecomposited) {
1450 WL = Handle(IntPatch_WLine)::DownCast(aSeqOfL.Value(i));
1451 ifprm = 1;
1452 ilprm = WL->NbPnts();
1453 }
1454 else {
1455 if(bAvoidLineConstructor) {
1456 ifprm = 1;
1457 ilprm = WL->NbPnts();
1458 }
1459 else {
1460 myLConstruct.Part(i, fprm, lprm);
1461 ifprm = (Standard_Integer)fprm;
1462 ilprm = (Standard_Integer)lprm;
1463 }
1464 }
81bba717 1465 //-- If one of surfaces is a plane , 2D approximation is done on
1466 //-- this surface and 2D points are returned in 3D.
7fd59977 1467 if(typs1 == GeomAbs_Plane) {
1468 theapp3d.Perform(myHS1, myHS2, WL, Standard_False,Standard_True, myApprox2,ifprm,ilprm);
1469 }
1470 else if(typs2 == GeomAbs_Plane) {
1471 theapp3d.Perform(myHS1,myHS2,WL,Standard_False,myApprox1,Standard_True,ifprm,ilprm);
1472 }
1473 else {
1474 //
1475 if (myHS1 != myHS2){
1476 if ((typs1==GeomAbs_BezierSurface || typs1==GeomAbs_BSplineSurface) &&
1477 (typs2==GeomAbs_BezierSurface || typs2==GeomAbs_BSplineSurface)) {
1478
1479 theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_True, aParType);
1480
1481 Standard_Boolean bUseSurfaces;
1482 bUseSurfaces=NotUseSurfacesForApprox(myFace1, myFace2, WL, ifprm, ilprm);
1483 if (bUseSurfaces) {
1484 // ######
1485 rejectSurface = Standard_True;
1486 // ######
1487 theapp3d.SetParameters(myTolApprox, tol2d, 4, 8, 0, Standard_False, aParType);
1488 }
1489 }
1490 }
1491 //
1492 theapp3d.Perform(myHS1,myHS2,WL,Standard_True,anApprox1,anApprox2,ifprm,ilprm);
1493 }
1494
1495 if (!theapp3d.IsDone()) {
1496 //
1497 Handle(Geom2d_BSplineCurve) H1;
1498 //
1499 Handle(Geom_Curve) aBSp=MakeBSpline(WL,ifprm, ilprm);
1500 Handle(Geom2d_BSplineCurve) H2;
1501
1502 if(myApprox1) {
1503 H1 = MakeBSpline2d(WL, ifprm, ilprm, Standard_True);
1504 }
1505
1506 if(myApprox2) {
1507 H2 = MakeBSpline2d(WL, ifprm, ilprm, Standard_False);
1508 }
1509 //
1510 IntTools_Curve aIC(aBSp, H1, H2);
1511 mySeqOfCurve.Append(aIC);
1512 }
1513
1514 else {
1515 if(myApprox1 || myApprox2 || (typs1==GeomAbs_Plane || typs2==GeomAbs_Plane)) {
1516 if( theapp3d.TolReached2d()>myTolReached2d || myTolReached2d==0.) {
1517 myTolReached2d = theapp3d.TolReached2d();
1518 }
1519 }
1520 if(typs1==GeomAbs_Plane || typs2==GeomAbs_Plane) {
1521 myTolReached3d = myTolReached2d;
1522 //
1523 if (typs1==GeomAbs_Torus || typs2==GeomAbs_Torus) {
1524 if (myTolReached3d<1.e-6) {
1525 myTolReached3d = theapp3d.TolReached3d();
1526 myTolReached3d=1.e-6;
1527 }
1528 }
1529 //
1530 }
1531 else if( theapp3d.TolReached3d()>myTolReached3d || myTolReached3d==0.) {
1532 myTolReached3d = theapp3d.TolReached3d();
1533 }
1534
1535 Standard_Integer aNbMultiCurves, nbpoles;
1536 aNbMultiCurves=theapp3d.NbMultiCurves();
1537 for (j=1; j<=aNbMultiCurves; j++) {
1538 if(typs1 == GeomAbs_Plane) {
1539 const AppParCurves_MultiBSpCurve& mbspc = theapp3d.Value(j);
1540 nbpoles = mbspc.NbPoles();
1541
1542 TColgp_Array1OfPnt2d tpoles2d(1,nbpoles);
1543 TColgp_Array1OfPnt tpoles(1,nbpoles);
1544
1545 mbspc.Curve(1,tpoles2d);
1546 const gp_Pln& Pln = myHS1->Surface().Plane();
1547 //
1548 Standard_Integer ik;
1549 for(ik = 1; ik<= nbpoles; ik++) {
1550 tpoles.SetValue(ik,
1551 ElSLib::Value(tpoles2d.Value(ik).X(),
1552 tpoles2d.Value(ik).Y(),
1553 Pln));
1554 }
1555 //
1556 Handle(Geom_BSplineCurve) BS =
1557 new Geom_BSplineCurve(tpoles,
1558 mbspc.Knots(),
1559 mbspc.Multiplicities(),
1560 mbspc.Degree());
1561 GeomLib_CheckBSplineCurve Check(BS,TOLCHECK,TOLANGCHECK);
1562 Check.FixTangent(Standard_True, Standard_True);
1563 //
1564 IntTools_Curve aCurve;
1565 aCurve.SetCurve(BS);
1566
1567 if(myApprox1) {
1568 Handle(Geom2d_BSplineCurve) BS1 =
1569 new Geom2d_BSplineCurve(tpoles2d,
1570 mbspc.Knots(),
1571 mbspc.Multiplicities(),
1572 mbspc.Degree());
1573 GeomLib_Check2dBSplineCurve Check1(BS1,TOLCHECK,TOLANGCHECK);
1574 Check1.FixTangent(Standard_True,Standard_True);
1575 //
1576 // ############################################
1577 if(!rejectSurface && !reApprox) {
1578 Standard_Boolean isValid = IsCurveValid(BS1);
1579 if(!isValid) {
1580 reApprox = Standard_True;
1581 goto reapprox;
1582 }
1583 }
1584 // ############################################
1585 aCurve.SetFirstCurve2d(BS1);
1586 }
1587 else {
1588 Handle(Geom2d_BSplineCurve) H1;
1589 aCurve.SetFirstCurve2d(H1);
1590 }
1591
1592 if(myApprox2) {
1593 mbspc.Curve(2, tpoles2d);
1594
1595 Handle(Geom2d_BSplineCurve) BS2 = new Geom2d_BSplineCurve(tpoles2d,
1596 mbspc.Knots(),
1597 mbspc.Multiplicities(),
1598 mbspc.Degree());
1599 GeomLib_Check2dBSplineCurve newCheck(BS2,TOLCHECK,TOLANGCHECK);
1600 newCheck.FixTangent(Standard_True,Standard_True);
1601
1602 // ###########################################
1603 if(!rejectSurface && !reApprox) {
1604 Standard_Boolean isValid = IsCurveValid(BS2);
1605 if(!isValid) {
1606 reApprox = Standard_True;
1607 goto reapprox;
1608 }
1609 }
1610 // ###########################################
1611 //
1612 aCurve.SetSecondCurve2d(BS2);
1613 }
1614 else {
1615 Handle(Geom2d_BSplineCurve) H2;
1616 //
1617 aCurve.SetSecondCurve2d(H2);
1618 }
1619 //
1620 mySeqOfCurve.Append(aCurve);
1621 }
1622
1623 else if(typs2 == GeomAbs_Plane) {
1624 const AppParCurves_MultiBSpCurve& mbspc = theapp3d.Value(j);
1625 nbpoles = mbspc.NbPoles();
1626
1627 TColgp_Array1OfPnt2d tpoles2d(1,nbpoles);
1628 TColgp_Array1OfPnt tpoles(1,nbpoles);
1629 mbspc.Curve((myApprox1==Standard_True)? 2 : 1,tpoles2d);
1630 const gp_Pln& Pln = myHS2->Surface().Plane();
1631 //
1632 Standard_Integer ik;
1633 for(ik = 1; ik<= nbpoles; ik++) {
1634 tpoles.SetValue(ik,
1635 ElSLib::Value(tpoles2d.Value(ik).X(),
1636 tpoles2d.Value(ik).Y(),
1637 Pln));
1638
1639 }
1640 //
1641 Handle(Geom_BSplineCurve) BS=new Geom_BSplineCurve(tpoles,
1642 mbspc.Knots(),
1643 mbspc.Multiplicities(),
1644 mbspc.Degree());
1645 GeomLib_CheckBSplineCurve Check(BS,TOLCHECK,TOLANGCHECK);
1646 Check.FixTangent(Standard_True,Standard_True);
1647 //
1648 IntTools_Curve aCurve;
1649 aCurve.SetCurve(BS);
1650
1651 if(myApprox2) {
1652 Handle(Geom2d_BSplineCurve) BS1=new Geom2d_BSplineCurve(tpoles2d,
1653 mbspc.Knots(),
1654 mbspc.Multiplicities(),
1655 mbspc.Degree());
1656 GeomLib_Check2dBSplineCurve Check1(BS1,TOLCHECK,TOLANGCHECK);
1657 Check1.FixTangent(Standard_True,Standard_True);
1658 //
1659 // ###########################################
1660 if(!rejectSurface && !reApprox) {
1661 Standard_Boolean isValid = IsCurveValid(BS1);
1662 if(!isValid) {
1663 reApprox = Standard_True;
1664 goto reapprox;
1665 }
1666 }
1667 // ###########################################
1668 aCurve.SetSecondCurve2d(BS1);
1669 }
1670 else {
1671 Handle(Geom2d_BSplineCurve) H2;
1672 aCurve.SetSecondCurve2d(H2);
1673 }
1674
1675 if(myApprox1) {
1676 mbspc.Curve(1,tpoles2d);
1677 Handle(Geom2d_BSplineCurve) BS2=new Geom2d_BSplineCurve(tpoles2d,
1678 mbspc.Knots(),
1679 mbspc.Multiplicities(),
1680 mbspc.Degree());
1681 GeomLib_Check2dBSplineCurve Check2(BS2,TOLCHECK,TOLANGCHECK);
1682 Check2.FixTangent(Standard_True,Standard_True);
1683 //
1684 // ###########################################
1685 if(!rejectSurface && !reApprox) {
1686 Standard_Boolean isValid = IsCurveValid(BS2);
1687 if(!isValid) {
1688 reApprox = Standard_True;
1689 goto reapprox;
1690 }
1691 }
1692 // ###########################################
1693 aCurve.SetFirstCurve2d(BS2);
1694 }
1695 else {
1696 Handle(Geom2d_BSplineCurve) H1;
1697 //
1698 aCurve.SetFirstCurve2d(H1);
1699 }
1700 //
1701 mySeqOfCurve.Append(aCurve);
1702 }
1703 else {
1704 const AppParCurves_MultiBSpCurve& mbspc = theapp3d.Value(j);
1705 nbpoles = mbspc.NbPoles();
1706 TColgp_Array1OfPnt tpoles(1,nbpoles);
1707 mbspc.Curve(1,tpoles);
1708 Handle(Geom_BSplineCurve) BS=new Geom_BSplineCurve(tpoles,
1709 mbspc.Knots(),
1710 mbspc.Multiplicities(),
1711 mbspc.Degree());
1712 GeomLib_CheckBSplineCurve Check(BS,TOLCHECK,TOLANGCHECK);
1713 Check.FixTangent(Standard_True,Standard_True);
1714 //
1715 IntTools_Curve aCurve;
1716 aCurve.SetCurve(BS);
1717
1718 if(myApprox1) {
1719 if(anApprox1) {
1720 TColgp_Array1OfPnt2d tpoles2d(1,nbpoles);
1721 mbspc.Curve(2,tpoles2d);
1722 Handle(Geom2d_BSplineCurve) BS1=new Geom2d_BSplineCurve(tpoles2d,
1723 mbspc.Knots(),
1724 mbspc.Multiplicities(),
1725 mbspc.Degree());
1726 GeomLib_Check2dBSplineCurve newCheck(BS1,TOLCHECK,TOLANGCHECK);
1727 newCheck.FixTangent(Standard_True,Standard_True);
1728 //
1729 aCurve.SetFirstCurve2d(BS1);
1730 }
1731 else {
1732 Handle(Geom2d_BSplineCurve) BS1;
1733 fprm = BS->FirstParameter();
1734 lprm = BS->LastParameter();
1735
1736 Handle(Geom2d_Curve) C2d;
1737 Standard_Real aTol = myTolApprox;
1738 BuildPCurves(fprm, lprm, aTol, myHS1->ChangeSurface().Surface(), BS, C2d);
1739 BS1 = Handle(Geom2d_BSplineCurve)::DownCast(C2d);
1740 aCurve.SetFirstCurve2d(BS1);
1741 }
1742
1743 }
1744 else {
1745 Handle(Geom2d_BSplineCurve) H1;
1746 //
1747 aCurve.SetFirstCurve2d(H1);
1748 }
1749 if(myApprox2) {
1750 if(anApprox2) {
1751 TColgp_Array1OfPnt2d tpoles2d(1,nbpoles);
1752 mbspc.Curve((myApprox1==Standard_True)? 3 : 2,tpoles2d);
1753 Handle(Geom2d_BSplineCurve) BS2=new Geom2d_BSplineCurve(tpoles2d,
1754 mbspc.Knots(),
1755 mbspc.Multiplicities(),
1756 mbspc.Degree());
1757 GeomLib_Check2dBSplineCurve newCheck(BS2,TOLCHECK,TOLANGCHECK);
1758 newCheck.FixTangent(Standard_True,Standard_True);
1759 //
1760 aCurve.SetSecondCurve2d(BS2);
1761 }
1762 else {
1763 Handle(Geom2d_BSplineCurve) BS2;
1764 fprm = BS->FirstParameter();
1765 lprm = BS->LastParameter();
1766
1767 Handle(Geom2d_Curve) C2d;
1768 Standard_Real aTol = myTolApprox;
1769 BuildPCurves(fprm, lprm, aTol, myHS2->ChangeSurface().Surface(), BS, C2d);
1770 BS2 = Handle(Geom2d_BSplineCurve)::DownCast(C2d);
1771 aCurve.SetSecondCurve2d(BS2);
1772 }
1773
1774 }
1775 else {
1776 Handle(Geom2d_BSplineCurve) H2;
1777 //
1778 aCurve.SetSecondCurve2d(H2);
1779 }
1780 //
1781 mySeqOfCurve.Append(aCurve);
1782 }
1783 }
1784 }
1785 }
1786 }// else { // X
1787 }// case IntPatch_Walking:{
1788 break;
1789
1790 case IntPatch_Restriction:
1791 break;
1792
1793 }
1794}
1795
1796//=======================================================================
1797//function : BuildPCurves
1798//purpose :
1799//=======================================================================
1800 void BuildPCurves (Standard_Real f,
1801 Standard_Real l,
1802 Standard_Real& Tol,
1803 const Handle (Geom_Surface)& S,
1804 const Handle (Geom_Curve)& C,
1805 Handle (Geom2d_Curve)& C2d)
1806{
1807
1808 Standard_Real umin,umax,vmin,vmax;
1809 //
1810
1811 if (C2d.IsNull()) {
1812
1813 // in class ProjLib_Function the range of parameters is shrank by 1.e-09
1814 if((l - f) > 2.e-09) {
1815 C2d = GeomProjLib::Curve2d(C,f,l,S,Tol);
1816 //
1817 if (C2d.IsNull()) {
1818 // proj. a circle that goes through the pole on a sphere to the sphere
1819 Tol=Tol+1.e-7;
1820 C2d = GeomProjLib::Curve2d(C,f,l,S,Tol);
1821 }
1822 }
1823 else {
1824 if((l - f) > Epsilon(Abs(f))) {
1825 GeomAPI_ProjectPointOnSurf aProjector1, aProjector2;
1826 gp_Pnt P1 = C->Value(f);
1827 gp_Pnt P2 = C->Value(l);
1828 aProjector1.Init(P1, S);
1829 aProjector2.Init(P2, S);
1830
1831 if(aProjector1.IsDone() && aProjector2.IsDone()) {
1832 Standard_Real U=0., V=0.;
1833 aProjector1.LowerDistanceParameters(U, V);
1834 gp_Pnt2d p1(U, V);
1835
1836 aProjector2.LowerDistanceParameters(U, V);
1837 gp_Pnt2d p2(U, V);
1838
1839 if(p1.Distance(p2) > gp::Resolution()) {
1840 TColgp_Array1OfPnt2d poles(1,2);
1841 TColStd_Array1OfReal knots(1,2);
1842 TColStd_Array1OfInteger mults(1,2);
1843 poles(1) = p1;
1844 poles(2) = p2;
1845 knots(1) = f;
1846 knots(2) = l;
1847 mults(1) = mults(2) = 2;
1848
1849 C2d = new Geom2d_BSplineCurve(poles,knots,mults,1);
1850
1851 // compute reached tolerance.begin
1852 gp_Pnt PMid = C->Value((f + l) * 0.5);
1853 aProjector1.Perform(PMid);
1854
1855 if(aProjector1.IsDone()) {
1856 aProjector1.LowerDistanceParameters(U, V);
1857 gp_Pnt2d pmidproj(U, V);
1858 gp_Pnt2d pmidcurve2d = C2d->Value((f + l) * 0.5);
1859 Standard_Real adist = pmidcurve2d.Distance(pmidproj);
1860 Tol = (adist > Tol) ? adist : Tol;
1861 }
1862 // compute reached tolerance.end
1863 }
1864 }
1865 }
1866 }
1867 //
1868 S->Bounds(umin, umax, vmin, vmax);
1869
1870 if (S->IsUPeriodic() && !C2d.IsNull()) {
81bba717 1871 // Reframe in domain UV of the face
7fd59977 1872 Standard_Real period, U0, du, aEps;
1873
1874 du =0.0;
1875 aEps=Precision::PConfusion();
1876 period = S->UPeriod();
1877 gp_Pnt2d Pf = C2d->Value(f);
1878 U0=Pf.X();
1879 //
1880 gp_Pnt2d Pl = C2d->Value(l);
1881
1882 U0 = Min(Pl.X(), U0);
1883// while(U0-umin<aEps) {
1884 while(U0-umin<-aEps) {
1885 U0+=period;
1886 du+=period;
1887 }
1888 //
1889 while(U0-umax>aEps) {
1890 U0-=period;
1891 du-=period;
1892 }
1893 if (du != 0) {
1894 gp_Vec2d T1(du,0.);
1895 C2d->Translate(T1);
1896 }
1897 }
1898 }
1899 if (C2d.IsNull()) {
1900 BOPTColStd_Dump::PrintMessage("BuildPCurves()=> Echec ProjLib\n");
1901 }
1902}
1903
1904//=======================================================================
1905//function : Parameters
1906//purpose :
1907//=======================================================================
1908 void Parameters(const Handle(GeomAdaptor_HSurface)& HS1,
1909 const Handle(GeomAdaptor_HSurface)& HS2,
1910 const gp_Pnt& Ptref,
1911 Standard_Real& U1,
1912 Standard_Real& V1,
1913 Standard_Real& U2,
1914 Standard_Real& V2)
1915{
1916
1917 IntSurf_Quadric quad1,quad2;
1918 GeomAbs_SurfaceType typs = HS1->Surface().GetType();
1919
1920 switch (typs) {
1921 case GeomAbs_Plane:
1922 quad1.SetValue(HS1->Surface().Plane());
1923 break;
1924 case GeomAbs_Cylinder:
1925 quad1.SetValue(HS1->Surface().Cylinder());
1926 break;
1927 case GeomAbs_Cone:
1928 quad1.SetValue(HS1->Surface().Cone());
1929 break;
1930 case GeomAbs_Sphere:
1931 quad1.SetValue(HS1->Surface().Sphere());
1932 break;
1933 default:
1934 Standard_ConstructionError::Raise("GeomInt_IntSS::MakeCurve");
1935 }
1936
1937 typs = HS2->Surface().GetType();
1938 switch (typs) {
1939 case GeomAbs_Plane:
1940 quad2.SetValue(HS2->Surface().Plane());
1941 break;
1942 case GeomAbs_Cylinder:
1943 quad2.SetValue(HS2->Surface().Cylinder());
1944 break;
1945 case GeomAbs_Cone:
1946 quad2.SetValue(HS2->Surface().Cone());
1947 break;
1948 case GeomAbs_Sphere:
1949 quad2.SetValue(HS2->Surface().Sphere());
1950 break;
1951 default:
1952 Standard_ConstructionError::Raise("GeomInt_IntSS::MakeCurve");
1953 }
1954
1955 quad1.Parameters(Ptref,U1,V1);
1956 quad2.Parameters(Ptref,U2,V2);
1957}
1958
1959//=======================================================================
1960//function : MakeBSpline
1961//purpose :
1962//=======================================================================
1963Handle(Geom_Curve) MakeBSpline (const Handle(IntPatch_WLine)& WL,
1964 const Standard_Integer ideb,
1965 const Standard_Integer ifin)
1966{
1967 Standard_Integer i,nbpnt = ifin-ideb+1;
1968 TColgp_Array1OfPnt poles(1,nbpnt);
1969 TColStd_Array1OfReal knots(1,nbpnt);
1970 TColStd_Array1OfInteger mults(1,nbpnt);
1971 Standard_Integer ipidebm1;
1972 for(i=1,ipidebm1=i+ideb-1; i<=nbpnt;ipidebm1++, i++) {
1973 poles(i) = WL->Point(ipidebm1).Value();
1974 mults(i) = 1;
1975 knots(i) = i-1;
1976 }
1977 mults(1) = mults(nbpnt) = 2;
1978 return
1979 new Geom_BSplineCurve(poles,knots,mults,1);
1980}
1981//
1982
1983//=======================================================================
1984//function : MakeBSpline2d
1985//purpose :
1986//=======================================================================
1987Handle(Geom2d_BSplineCurve) MakeBSpline2d(const Handle(IntPatch_WLine)& theWLine,
1988 const Standard_Integer ideb,
1989 const Standard_Integer ifin,
1990 const Standard_Boolean onFirst)
1991{
1992 Standard_Integer i, nbpnt = ifin-ideb+1;
1993 TColgp_Array1OfPnt2d poles(1,nbpnt);
1994 TColStd_Array1OfReal knots(1,nbpnt);
1995 TColStd_Array1OfInteger mults(1,nbpnt);
1996 Standard_Integer ipidebm1;
1997
1998 for(i = 1, ipidebm1 = i+ideb-1; i <= nbpnt; ipidebm1++, i++) {
1999 Standard_Real U, V;
2000 if(onFirst)
2001 theWLine->Point(ipidebm1).ParametersOnS1(U, V);
2002 else
2003 theWLine->Point(ipidebm1).ParametersOnS2(U, V);
2004 poles(i).SetCoord(U, V);
2005 mults(i) = 1;
2006 knots(i) = i-1;
2007 }
2008 mults(1) = mults(nbpnt) = 2;
2009
2010 return new Geom2d_BSplineCurve(poles,knots,mults,1);
2011}
2012//=======================================================================
2013//function : PrepareLines3D
2014//purpose :
2015//=======================================================================
2016 void IntTools_FaceFace::PrepareLines3D()
2017{
2018 Standard_Integer i, aNbCurves, j, aNbNewCurves;
2019 IntTools_SequenceOfCurves aNewCvs;
2020
2021 //
81bba717 2022 // 1. Processing of periodic and closed curves
7fd59977 2023 aNbCurves=mySeqOfCurve.Length();
2024 for (i=1; i<=aNbCurves; i++) {
2025 const IntTools_Curve& aIC=mySeqOfCurve(i);
2026 // DEBUG
2027 // const Handle(Geom_Curve)& aC3D =aIC.Curve();
2028 // const Handle(Geom2d_Curve)& aC2D1=aIC.FirstCurve2d();
2029 // const Handle(Geom2d_Curve)& aC2D2=aIC.SecondCurve2d();
2030 //
2031 IntTools_SequenceOfCurves aSeqCvs;
2032 aNbNewCurves=IntTools_Tools::SplitCurve(aIC, aSeqCvs);
2033
2034 if (aNbNewCurves) {
2035 for (j=1; j<=aNbNewCurves; j++) {
2036 const IntTools_Curve& aICNew=aSeqCvs(j);
2037 aNewCvs.Append(aICNew);
2038 }
2039 }
2040 //
2041 else {
2042 aNewCvs.Append(aIC);
2043 }
2044 }
2045 //
2046 // 2. Plane\Cone intersection when we had 4 curves
2047 GeomAbs_SurfaceType aType1, aType2;
2048 BRepAdaptor_Surface aBS1, aBS2;
2049
2050 aBS1.Initialize(myFace1);
2051 aType1=aBS1.GetType();
2052
2053 aBS2.Initialize(myFace2);
2054 aType2=aBS2.GetType();
2055
2056 if ((aType1==GeomAbs_Plane && aType2==GeomAbs_Cone) ||
2057 (aType2==GeomAbs_Plane && aType1==GeomAbs_Cone)) {
2058 aNbCurves=aNewCvs.Length();
2059 if (aNbCurves==4) {
2060 GeomAbs_CurveType aCType1=aNewCvs(1).Type();
2061 if (aCType1==GeomAbs_Line) {
2062 IntTools_SequenceOfCurves aSeqIn, aSeqOut;
2063 //
2064 for (i=1; i<=aNbCurves; i++) {
2065 const IntTools_Curve& aIC=aNewCvs(i);
2066 aSeqIn.Append(aIC);
2067 }
2068 //
2069 IntTools_Tools::RejectLines(aSeqIn, aSeqOut);
2070 //
2071 aNewCvs.Clear();
2072 aNbCurves=aSeqOut.Length();
2073 for (i=1; i<=aNbCurves; i++) {
2074 const IntTools_Curve& aIC=aSeqOut(i);
2075 aNewCvs.Append(aIC);
2076 }
2077 //
2078 }
2079 }
2080 }// end of if ((aType1==GeomAbs_Plane && ...
2081 //
2082 // 3. Fill mySeqOfCurve
2083 mySeqOfCurve.Clear();
2084 aNbCurves=aNewCvs.Length();
2085 for (i=1; i<=aNbCurves; i++) {
2086 const IntTools_Curve& aIC=aNewCvs(i);
2087 mySeqOfCurve.Append(aIC);
2088 }
2089
2090}
2091
2092
2093//=======================================================================
2094//function : CorrectSurfaceBoundaries
2095//purpose :
2096//=======================================================================
2097 void CorrectSurfaceBoundaries(const TopoDS_Face& theFace,
2098 const Standard_Real theTolerance,
2099 Standard_Real& theumin,
2100 Standard_Real& theumax,
2101 Standard_Real& thevmin,
2102 Standard_Real& thevmax)
2103{
2104 Standard_Boolean enlarge, isuperiodic, isvperiodic;
2105 Standard_Real uinf, usup, vinf, vsup, delta;
2106 GeomAbs_SurfaceType aType;
2107 Handle(Geom_Surface) aSurface;
2108 //
2109 aSurface = BRep_Tool::Surface(theFace);
2110 aSurface->Bounds(uinf, usup, vinf, vsup);
2111 delta = theTolerance;
2112 enlarge = Standard_False;
2113 //
2114 GeomAdaptor_Surface anAdaptorSurface(aSurface);
2115 //
2116 if(aSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
2117 Handle(Geom_Surface) aBasisSurface =
2118 (Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface))->BasisSurface();
2119
2120 if(aBasisSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface)) ||
2121 aBasisSurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
2122 return;
2123 }
2124 }
2125 //
2126 if(aSurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
2127 Handle(Geom_Surface) aBasisSurface =
2128 (Handle(Geom_OffsetSurface)::DownCast(aSurface))->BasisSurface();
2129
2130 if(aBasisSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface)) ||
2131 aBasisSurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
2132 return;
2133 }
2134 }
2135 //
2136 isuperiodic = anAdaptorSurface.IsUPeriodic();
2137 isvperiodic = anAdaptorSurface.IsVPeriodic();
2138 //
2139 aType=anAdaptorSurface.GetType();
2140 if((aType==GeomAbs_BezierSurface) ||
2141 (aType==GeomAbs_BSplineSurface) ||
2142 (aType==GeomAbs_SurfaceOfExtrusion) ||
2143 (aType==GeomAbs_SurfaceOfRevolution)) {
2144 enlarge=Standard_True;
2145 }
2146 //
2147 if(!isuperiodic && enlarge) {
2148
2149 if((theumin - uinf) > delta )
2150 theumin -= delta;
2151 else {
2152 theumin = uinf;
2153 }
2154
2155 if((usup - theumax) > delta )
2156 theumax += delta;
2157 else
2158 theumax = usup;
2159 }
2160 //
2161 if(!isvperiodic && enlarge) {
2162 if((thevmin - vinf) > delta ) {
2163 thevmin -= delta;
2164 }
2165 else {
2166 thevmin = vinf;
2167 }
2168 if((vsup - thevmax) > delta ) {
2169 thevmax += delta;
2170 }
2171 else {
2172 thevmax = vsup;
2173 }
2174 }
2175 //
2176 {
2177 Standard_Integer aNbP;
2178 Standard_Real aXP, dXfact, aXmid, aX1, aX2, aTolPA;
2179 //
2180 aTolPA=Precision::Angular();
2181 // U
2182 if (isuperiodic) {
2183 aXP=anAdaptorSurface.UPeriod();
2184 dXfact=theumax-theumin;
2185 if (dXfact-aTolPA>aXP) {
2186 aXmid=0.5*(theumax+theumin);
2187 aNbP=RealToInt(aXmid/aXP);
2188 if (aXmid<0.) {
2189 aNbP=aNbP-1;
2190 }
2191 aX1=aNbP*aXP;
2192 aX2=aX1+aXP;
2193 if (theumin<aX1) {
2194 theumin=aX1;
2195 }
2196 if (theumax>aX2) {
2197 theumax=aX2;
2198 }
2199 }
2200 }
2201 // V
2202 if (isvperiodic) {
2203 aXP=anAdaptorSurface.VPeriod();
2204 dXfact=thevmax-thevmin;
2205 if (dXfact-aTolPA>aXP) {
2206 aXmid=0.5*(thevmax+thevmin);
2207 aNbP=RealToInt(aXmid/aXP);
2208 if (aXmid<0.) {
2209 aNbP=aNbP-1;
2210 }
2211 aX1=aNbP*aXP;
2212 aX2=aX1+aXP;
2213 if (thevmin<aX1) {
2214 thevmin=aX1;
2215 }
2216 if (thevmax>aX2) {
2217 thevmax=aX2;
2218 }
2219 }
2220 }
2221 }
2222 //
2223 if(isuperiodic || isvperiodic) {
2224 Standard_Boolean correct = Standard_False;
2225 Standard_Boolean correctU = Standard_False;
2226 Standard_Boolean correctV = Standard_False;
2227 Bnd_Box2d aBox;
2228 TopExp_Explorer anExp;
2229
2230 for(anExp.Init(theFace, TopAbs_EDGE); anExp.More(); anExp.Next()) {
2231 if(BRep_Tool::IsClosed(TopoDS::Edge(anExp.Current()), theFace)) {
2232 correct = Standard_True;
2233 Standard_Real f, l;
2234 TopoDS_Edge anEdge = TopoDS::Edge(anExp.Current());
2235
2236 for(Standard_Integer i = 0; i < 2; i++) {
2237 if(i==0) {
2238 anEdge.Orientation(TopAbs_FORWARD);
2239 }
2240 else {
2241 anEdge.Orientation(TopAbs_REVERSED);
2242 }
2243 Handle(Geom2d_Curve) aCurve = BRep_Tool::CurveOnSurface(anEdge, theFace, f, l);
2244
2245 if(aCurve.IsNull()) {
2246 correct = Standard_False;
2247 break;
2248 }
2249 Handle(Geom2d_Line) aLine = Handle(Geom2d_Line)::DownCast(aCurve);
2250
2251 if(aLine.IsNull()) {
2252 correct = Standard_False;
2253 break;
2254 }
2255 gp_Dir2d anUDir(1., 0.);
2256 gp_Dir2d aVDir(0., 1.);
2257 Standard_Real anAngularTolerance = Precision::Angular();
2258
2259 correctU = correctU || aLine->Position().Direction().IsParallel(aVDir, anAngularTolerance);
2260 correctV = correctV || aLine->Position().Direction().IsParallel(anUDir, anAngularTolerance);
2261
2262 gp_Pnt2d pp1 = aCurve->Value(f);
2263 aBox.Add(pp1);
2264 gp_Pnt2d pp2 = aCurve->Value(l);
2265 aBox.Add(pp2);
2266 }
2267 if(!correct)
2268 break;
2269 }
2270 }
2271
2272 if(correct) {
2273 Standard_Real umin, vmin, umax, vmax;
2274 aBox.Get(umin, vmin, umax, vmax);
2275
2276 if(isuperiodic && correctU) {
2277
2278 if(theumin < umin)
2279 theumin = umin;
2280
2281 if(theumax > umax) {
2282 theumax = umax;
2283 }
2284 }
2285 if(isvperiodic && correctV) {
2286
2287 if(thevmin < vmin)
2288 thevmin = vmin;
2289 if(thevmax > vmax)
2290 thevmax = vmax;
2291 }
2292 }
2293 }
2294}
2295//
2296//
2297// The block is dedicated to determine whether WLine [ifprm, ilprm]
2298// crosses the degenerated zone on each given surface or not.
2299// If Yes -> We will not use info about surfaces during approximation
2300// because inside degenerated zone of the surface the approx. alogo.
2301// uses wrong values of normal, etc., and resulting curve will have
2302// oscillations that we would not like to have.
2303// PKV Tue Feb 12 2002
2304
2305
2306static
2307 Standard_Boolean IsDegeneratedZone(const gp_Pnt2d& aP2d,
2308 const Handle(Geom_Surface)& aS,
2309 const Standard_Integer iDir);
2310static
2311 Standard_Boolean IsPointInDegeneratedZone(const IntSurf_PntOn2S& aP2S,
2312 const TopoDS_Face& aF1,
2313 const TopoDS_Face& aF2);
2314//=======================================================================
2315//function : NotUseSurfacesForApprox
2316//purpose :
2317//=======================================================================
2318Standard_Boolean NotUseSurfacesForApprox(const TopoDS_Face& aF1,
2319 const TopoDS_Face& aF2,
2320 const Handle(IntPatch_WLine)& WL,
2321 const Standard_Integer ifprm,
2322 const Standard_Integer ilprm)
2323{
2324 Standard_Boolean bPInDZ;
2325
2326 Handle(IntSurf_LineOn2S) aLineOn2S=WL->Curve();
2327
2328 const IntSurf_PntOn2S& aP2Sfprm=aLineOn2S->Value(ifprm);
2329 bPInDZ=IsPointInDegeneratedZone(aP2Sfprm, aF1, aF2);
2330 if (bPInDZ) {
2331 return bPInDZ;
2332 }
2333
2334 const IntSurf_PntOn2S& aP2Slprm=aLineOn2S->Value(ilprm);
2335 bPInDZ=IsPointInDegeneratedZone(aP2Slprm, aF1, aF2);
2336
2337 return bPInDZ;
2338}
2339//=======================================================================
2340//function : IsPointInDegeneratedZone
2341//purpose :
2342//=======================================================================
2343Standard_Boolean IsPointInDegeneratedZone(const IntSurf_PntOn2S& aP2S,
2344 const TopoDS_Face& aF1,
2345 const TopoDS_Face& aF2)
2346
2347{
2348 Standard_Boolean bFlag=Standard_True;
2349 Standard_Real US11, US12, VS11, VS12, US21, US22, VS21, VS22;
2350 Standard_Real U1, V1, U2, V2, aDelta, aD;
2351 gp_Pnt2d aP2d;
2352
2353 Handle(Geom_Surface)aS1 = BRep_Tool::Surface(aF1);
2354 aS1->Bounds(US11, US12, VS11, VS12);
2355 GeomAdaptor_Surface aGAS1(aS1);
2356
2357 Handle(Geom_Surface)aS2 = BRep_Tool::Surface(aF2);
2358 aS1->Bounds(US21, US22, VS21, VS22);
2359 GeomAdaptor_Surface aGAS2(aS2);
2360 //
2361 //const gp_Pnt& aP=aP2S.Value();
2362 aP2S.Parameters(U1, V1, U2, V2);
2363 //
2364 aDelta=1.e-7;
2365 // Check on Surf 1
2366 aD=aGAS1.UResolution(aDelta);
2367 aP2d.SetCoord(U1, V1);
2368 if (fabs(U1-US11) < aD) {
2369 bFlag=IsDegeneratedZone(aP2d, aS1, 1);
2370 if (bFlag) {
2371 return bFlag;
2372 }
2373 }
2374 if (fabs(U1-US12) < aD) {
2375 bFlag=IsDegeneratedZone(aP2d, aS1, 1);
2376 if (bFlag) {
2377 return bFlag;
2378 }
2379 }
2380 aD=aGAS1.VResolution(aDelta);
2381 if (fabs(V1-VS11) < aDelta) {
2382 bFlag=IsDegeneratedZone(aP2d, aS1, 2);
2383 if (bFlag) {
2384 return bFlag;
2385 }
2386 }
2387 if (fabs(V1-VS12) < aDelta) {
2388 bFlag=IsDegeneratedZone(aP2d, aS1, 2);
2389 if (bFlag) {
2390 return bFlag;
2391 }
2392 }
2393 // Check on Surf 2
2394 aD=aGAS2.UResolution(aDelta);
2395 aP2d.SetCoord(U2, V2);
2396 if (fabs(U2-US21) < aDelta) {
2397 bFlag=IsDegeneratedZone(aP2d, aS2, 1);
2398 if (bFlag) {
2399 return bFlag;
2400 }
2401 }
2402 if (fabs(U2-US22) < aDelta) {
2403 bFlag=IsDegeneratedZone(aP2d, aS2, 1);
2404 if (bFlag) {
2405 return bFlag;
2406 }
2407 }
2408 aD=aGAS2.VResolution(aDelta);
2409 if (fabs(V2-VS21) < aDelta) {
2410 bFlag=IsDegeneratedZone(aP2d, aS2, 2);
2411 if (bFlag) {
2412 return bFlag;
2413 }
2414 }
2415 if (fabs(V2-VS22) < aDelta) {
2416 bFlag=IsDegeneratedZone(aP2d, aS2, 2);
2417 if (bFlag) {
2418 return bFlag;
2419 }
2420 }
2421 return !bFlag;
2422}
2423
2424//=======================================================================
2425//function : IsDegeneratedZone
2426//purpose :
2427//=======================================================================
2428Standard_Boolean IsDegeneratedZone(const gp_Pnt2d& aP2d,
2429 const Handle(Geom_Surface)& aS,
2430 const Standard_Integer iDir)
2431{
2432 Standard_Boolean bFlag=Standard_True;
2433 Standard_Real US1, US2, VS1, VS2, dY, dX, d1, d2, dD;
2434 Standard_Real aXm, aYm, aXb, aYb, aXe, aYe;
2435 aS->Bounds(US1, US2, VS1, VS2);
2436
2437 gp_Pnt aPm, aPb, aPe;
2438
2439 aXm=aP2d.X();
2440 aYm=aP2d.Y();
2441
2442 aS->D0(aXm, aYm, aPm);
2443
2444 dX=1.e-5;
2445 dY=1.e-5;
2446 dD=1.e-12;
2447
2448 if (iDir==1) {
2449 aXb=aXm;
2450 aXe=aXm;
2451 aYb=aYm-dY;
2452 if (aYb < VS1) {
2453 aYb=VS1;
2454 }
2455 aYe=aYm+dY;
2456 if (aYe > VS2) {
2457 aYe=VS2;
2458 }
2459 aS->D0(aXb, aYb, aPb);
2460 aS->D0(aXe, aYe, aPe);
2461
2462 d1=aPm.Distance(aPb);
2463 d2=aPm.Distance(aPe);
2464 if (d1 < dD && d2 < dD) {
2465 return bFlag;
2466 }
2467 return !bFlag;
2468 }
2469 //
2470 else if (iDir==2) {
2471 aYb=aYm;
2472 aYe=aYm;
2473 aXb=aXm-dX;
2474 if (aXb < US1) {
2475 aXb=US1;
2476 }
2477 aXe=aXm+dX;
2478 if (aXe > US2) {
2479 aXe=US2;
2480 }
2481 aS->D0(aXb, aYb, aPb);
2482 aS->D0(aXe, aYe, aPe);
2483
2484 d1=aPm.Distance(aPb);
2485 d2=aPm.Distance(aPe);
2486 if (d1 < dD && d2 < dD) {
2487 return bFlag;
2488 }
2489 return !bFlag;
2490 }
2491 return !bFlag;
2492}
2493
2494//=========================================================================
2495// static function : ComputePurgedWLine
2496// purpose : Removes equal points (leave one of equal points) from theWLine
2497// and recompute vertex parameters.
2498// Returns new WLine or null WLine if the number
2499// of the points is less than 2.
2500//=========================================================================
2501Handle(IntPatch_WLine) ComputePurgedWLine(const Handle(IntPatch_WLine)& theWLine) {
2502 Handle(IntPatch_WLine) aResult;
2503 Handle(IntPatch_WLine) aLocalWLine;
2504 Handle(IntPatch_WLine) aTmpWLine = theWLine;
2505
2506 Handle(IntSurf_LineOn2S) aLineOn2S = new IntSurf_LineOn2S();
2507 aLocalWLine = new IntPatch_WLine(aLineOn2S, Standard_False);
2508 Standard_Integer i, k, v, nb, nbvtx;
2509 nbvtx = theWLine->NbVertex();
2510 nb = theWLine->NbPnts();
2511
2512 for(i = 1; i <= nb; i++) {
2513 aLineOn2S->Add(theWLine->Point(i));
2514 }
2515
2516 for(v = 1; v <= nbvtx; v++) {
2517 aLocalWLine->AddVertex(theWLine->Vertex(v));
2518 }
2519
2520 for(i = 1; i <= aLineOn2S->NbPoints(); i++) {
2521 Standard_Integer aStartIndex = i + 1;
2522 Standard_Integer anEndIndex = i + 5;
2523 nb = aLineOn2S->NbPoints();
2524 anEndIndex = (anEndIndex > nb) ? nb : anEndIndex;
2525
2526 if((aStartIndex >= nb) || (anEndIndex <= 1)) {
2527 continue;
2528 }
2529 k = aStartIndex;
2530
2531 while(k <= anEndIndex) {
2532
2533 if(i != k) {
2534 IntSurf_PntOn2S p1 = aLineOn2S->Value(i);
2535 IntSurf_PntOn2S p2 = aLineOn2S->Value(k);
2536
2537 if(p1.Value().IsEqual(p2.Value(), gp::Resolution())) {
2538 aTmpWLine = aLocalWLine;
2539 aLocalWLine = new IntPatch_WLine(aLineOn2S, Standard_False);
2540
2541 for(v = 1; v <= aTmpWLine->NbVertex(); v++) {
2542 IntPatch_Point aVertex = aTmpWLine->Vertex(v);
2543 Standard_Integer avertexindex = (Standard_Integer)aVertex.ParameterOnLine();
2544
2545 if(avertexindex >= k) {
2546 aVertex.SetParameter(aVertex.ParameterOnLine() - 1.);
2547 }
2548 aLocalWLine->AddVertex(aVertex);
2549 }
2550 aLineOn2S->RemovePoint(k);
2551 anEndIndex--;
2552 continue;
2553 }
2554 }
2555 k++;
2556 }
2557 }
2558
2559 if(aLineOn2S->NbPoints() > 1) {
2560 aResult = aLocalWLine;
2561 }
2562 return aResult;
2563}
2564
2565//=======================================================================
2566//function : TolR3d
2567//purpose :
2568//=======================================================================
2569void TolR3d(const TopoDS_Face& aF1,
2570 const TopoDS_Face& aF2,
2571 Standard_Real& myTolReached3d)
2572{
2573 Standard_Real aTolF1, aTolF2, aTolFMax, aTolTresh;
2574
2575 aTolTresh=2.999999e-3;
2576 aTolF1 = BRep_Tool::Tolerance(aF1);
2577 aTolF2 = BRep_Tool::Tolerance(aF2);
2578 aTolFMax=Max(aTolF1, aTolF2);
2579
2580 if (aTolFMax>aTolTresh) {
2581 myTolReached3d=aTolFMax;
2582 }
2583}
2584//=======================================================================
2585//function : AdjustPeriodic
2586//purpose :
2587//=======================================================================
2588Standard_Real AdjustPeriodic(const Standard_Real theParameter,
2589 const Standard_Real parmin,
2590 const Standard_Real parmax,
2591 const Standard_Real thePeriod,
2592 Standard_Real& theOffset)
2593{
2594 Standard_Real aresult;
2595 //
2596 theOffset = 0.;
2597 aresult = theParameter;
2598 while(aresult < parmin) {
2599 aresult += thePeriod;
2600 theOffset += thePeriod;
2601 }
2602
2603 while(aresult > parmax) {
2604 aresult -= thePeriod;
2605 theOffset -= thePeriod;
2606 }
2607 return aresult;
2608}
2609//=======================================================================
2610//function : IsPointOnBoundary
2611//purpose :
2612//=======================================================================
2613Standard_Boolean IsPointOnBoundary(const Standard_Real theParameter,
2614 const Standard_Real theFirstBoundary,
2615 const Standard_Real theSecondBoundary,
2616 const Standard_Real theResolution,
2617 Standard_Boolean& IsOnFirstBoundary)
2618{
2619 Standard_Boolean bRet;
2620 Standard_Integer i;
2621 Standard_Real adist;
2622 //
2623 bRet=Standard_False;
2624 for(i = 0; i < 2; ++i) {
2625 IsOnFirstBoundary = (i == 0);
2626 if (IsOnFirstBoundary) {
2627 adist = fabs(theParameter - theFirstBoundary);
2628 }
2629 else {
2630 adist = fabs(theParameter - theSecondBoundary);
2631 }
2632 if(adist < theResolution) {
2633 return !bRet;
2634 }
2635 }
2636 return bRet;
2637}
2638// ------------------------------------------------------------------------------------------------
2639// static function: FindPoint
2640// purpose:
2641// ------------------------------------------------------------------------------------------------
2642Standard_Boolean FindPoint(const gp_Pnt2d& theFirstPoint,
2643 const gp_Pnt2d& theLastPoint,
2644 const Standard_Real theUmin,
2645 const Standard_Real theUmax,
2646 const Standard_Real theVmin,
2647 const Standard_Real theVmax,
2648 gp_Pnt2d& theNewPoint) {
2649
2650 gp_Vec2d aVec(theFirstPoint, theLastPoint);
2651 Standard_Integer i = 0, j = 0;
2652
2653 for(i = 0; i < 4; i++) {
2654 gp_Vec2d anOtherVec;
2655 gp_Vec2d anOtherVecNormal;
2656 gp_Pnt2d aprojpoint = theLastPoint;
2657
2658 if((i % 2) == 0) {
2659 anOtherVec.SetX(0.);
2660 anOtherVec.SetY(1.);
2661 anOtherVecNormal.SetX(1.);
2662 anOtherVecNormal.SetY(0.);
2663
2664 if(i < 2)
2665 aprojpoint.SetX(theUmin);
2666 else
2667 aprojpoint.SetX(theUmax);
2668 }
2669 else {
2670 anOtherVec.SetX(1.);
2671 anOtherVec.SetY(0.);
2672 anOtherVecNormal.SetX(0.);
2673 anOtherVecNormal.SetY(1.);
2674
2675 if(i < 2)
2676 aprojpoint.SetY(theVmin);
2677 else
2678 aprojpoint.SetY(theVmax);
2679 }
2680 gp_Vec2d anormvec = aVec;
2681 anormvec.Normalize();
2682 Standard_Real adot1 = anormvec.Dot(anOtherVecNormal);
2683
2684 if(fabs(adot1) < Precision::Angular())
2685 continue;
2686 Standard_Real adist = 0.;
2687 Standard_Boolean bIsOut = Standard_False;
2688
2689 if((i % 2) == 0) {
2690 adist = (i < 2) ? fabs(theLastPoint.X() - theUmin) : fabs(theLastPoint.X() - theUmax);
2691 bIsOut = (i < 2) ? (theLastPoint.X() < theUmin) : (theLastPoint.X() > theUmax);
2692 }
2693 else {
2694 adist = (i < 2) ? fabs(theLastPoint.Y() - theVmin) : fabs(theLastPoint.Y() - theVmax);
2695 bIsOut = (i < 2) ? (theLastPoint.Y() < theVmin) : (theLastPoint.Y() > theVmax);
2696 }
2697 Standard_Real anoffset = adist * anOtherVec.Dot(anormvec) / adot1;
2698
2699 for(j = 0; j < 2; j++) {
2700 anoffset = (j == 0) ? anoffset : -anoffset;
2701 gp_Pnt2d acurpoint(aprojpoint.XY() + (anOtherVec.XY()*anoffset));
2702 gp_Vec2d acurvec(theLastPoint, acurpoint);
2703 if ( bIsOut )
2704 acurvec.Reverse();
2705
2706 if((aVec.Dot(acurvec) > 0.) &&
2707 (aVec.Angle(acurvec) < Precision::PConfusion())) {
2708 if((i % 2) == 0) {
2709 if((acurpoint.Y() >= theVmin) &&
2710 (acurpoint.Y() <= theVmax)) {
2711 theNewPoint = acurpoint;
2712 return Standard_True;
2713 }
2714 }
2715 else {
2716 if((acurpoint.X() >= theUmin) &&
2717 (acurpoint.X() <= theUmax)) {
2718 theNewPoint = acurpoint;
2719 return Standard_True;
2720 }
2721 }
2722 }
2723 }
2724 }
2725 return Standard_False;
2726}
2727
2728
2729// ------------------------------------------------------------------------------------------------
2730// static function: FindPoint
2731// purpose: Find point on the boundary of radial tangent zone
2732// ------------------------------------------------------------------------------------------------
2733Standard_Boolean FindPoint(const gp_Pnt2d& theFirstPoint,
2734 const gp_Pnt2d& theLastPoint,
2735 const Standard_Real theUmin,
2736 const Standard_Real theUmax,
2737 const Standard_Real theVmin,
2738 const Standard_Real theVmax,
2739 const gp_Pnt2d& theTanZoneCenter,
2740 const Standard_Real theZoneRadius,
2741 Handle(GeomAdaptor_HSurface) theGASurface,
2742 gp_Pnt2d& theNewPoint) {
2743 theNewPoint = theLastPoint;
2744
2745 if ( !IsInsideTanZone( theLastPoint, theTanZoneCenter, theZoneRadius, theGASurface) )
2746 return Standard_False;
2747
2748 Standard_Real aUResolution = theGASurface->UResolution( theZoneRadius );
2749 Standard_Real aVResolution = theGASurface->VResolution( theZoneRadius );
2750
2751 Standard_Real aRadius = ( aUResolution < aVResolution ) ? aUResolution : aVResolution;
2752 gp_Ax22d anAxis( theTanZoneCenter, gp_Dir2d(1, 0), gp_Dir2d(0, 1) );
2753 gp_Circ2d aCircle( anAxis, aRadius );
2754
2755 //
2756 gp_Vec2d aDir( theLastPoint.XY() - theFirstPoint.XY() );
2757 Standard_Real aLength = aDir.Magnitude();
2758 if ( aLength <= gp::Resolution() )
2759 return Standard_False;
2760 gp_Lin2d aLine( theFirstPoint, aDir );
2761
2762 //
2763 Handle(Geom2d_Line) aCLine = new Geom2d_Line( aLine );
2764 Handle(Geom2d_TrimmedCurve) aC1 = new Geom2d_TrimmedCurve( aCLine, 0, aLength );
2765 Handle(Geom2d_Circle) aC2 = new Geom2d_Circle( aCircle );
2766
2767 Standard_Real aTol = aRadius * 0.001;
2768 aTol = ( aTol < Precision::PConfusion() ) ? Precision::PConfusion() : aTol;
2769
2770 Geom2dAPI_InterCurveCurve anIntersector;
2771 anIntersector.Init( aC1, aC2, aTol );
2772
2773 if ( anIntersector.NbPoints() == 0 )
2774 return Standard_False;
2775
2776 Standard_Boolean aFound = Standard_False;
2777 Standard_Real aMinDist = aLength * aLength;
2778 Standard_Integer i = 0;
2779 for ( i = 1; i <= anIntersector.NbPoints(); i++ ) {
2780 gp_Pnt2d aPInt = anIntersector.Point( i );
2781 if ( aPInt.SquareDistance( theFirstPoint ) < aMinDist ) {
2782 if ( ( aPInt.X() >= theUmin ) && ( aPInt.X() <= theUmax ) &&
2783 ( aPInt.Y() >= theVmin ) && ( aPInt.Y() <= theVmax ) ) {
2784 theNewPoint = aPInt;
2785 aFound = Standard_True;
2786 }
2787 }
2788 }
2789
2790 return aFound;
2791}
2792
2793// ------------------------------------------------------------------------------------------------
2794// static function: IsInsideTanZone
2795// purpose: Check if point is inside a radial tangent zone
2796// ------------------------------------------------------------------------------------------------
2797Standard_Boolean IsInsideTanZone(const gp_Pnt2d& thePoint,
2798 const gp_Pnt2d& theTanZoneCenter,
2799 const Standard_Real theZoneRadius,
2800 Handle(GeomAdaptor_HSurface) theGASurface) {
2801
2802 Standard_Real aUResolution = theGASurface->UResolution( theZoneRadius );
2803 Standard_Real aVResolution = theGASurface->VResolution( theZoneRadius );
2804 Standard_Real aRadiusSQR = ( aUResolution < aVResolution ) ? aUResolution : aVResolution;
2805 aRadiusSQR *= aRadiusSQR;
2806 if ( thePoint.SquareDistance( theTanZoneCenter ) <= aRadiusSQR )
2807 return Standard_True;
2808 return Standard_False;
2809}
2810
2811// ------------------------------------------------------------------------------------------------
2812// static function: CheckTangentZonesExist
2813// purpose: Check if tangent zone exists
2814// ------------------------------------------------------------------------------------------------
2815Standard_Boolean CheckTangentZonesExist( const Handle(GeomAdaptor_HSurface)& theSurface1,
2816 const Handle(GeomAdaptor_HSurface)& theSurface2 )
2817{
2818 if ( ( theSurface1->GetType() != GeomAbs_Torus ) ||
2819 ( theSurface2->GetType() != GeomAbs_Torus ) )
2820 return Standard_False;
2821
2822 IntTools_Context aContext;
2823
2824 gp_Torus aTor1 = theSurface1->Torus();
2825 gp_Torus aTor2 = theSurface2->Torus();
2826
2827 if ( aTor1.Location().Distance( aTor2.Location() ) > Precision::Confusion() )
2828 return Standard_False;
2829
2830 if ( ( fabs( aTor1.MajorRadius() - aTor2.MajorRadius() ) > Precision::Confusion() ) ||
2831 ( fabs( aTor1.MinorRadius() - aTor2.MinorRadius() ) > Precision::Confusion() ) )
2832 return Standard_False;
2833
2834 if ( ( aTor1.MajorRadius() < aTor1.MinorRadius() ) ||
2835 ( aTor2.MajorRadius() < aTor2.MinorRadius() ) )
2836 return Standard_False;
2837 return Standard_True;
2838}
2839
2840// ------------------------------------------------------------------------------------------------
2841// static function: ComputeTangentZones
2842// purpose:
2843// ------------------------------------------------------------------------------------------------
2844Standard_Integer ComputeTangentZones( const Handle(GeomAdaptor_HSurface)& theSurface1,
2845 const Handle(GeomAdaptor_HSurface)& theSurface2,
2846 const TopoDS_Face& theFace1,
2847 const TopoDS_Face& theFace2,
2848 Handle(TColgp_HArray1OfPnt2d)& theResultOnS1,
2849 Handle(TColgp_HArray1OfPnt2d)& theResultOnS2,
2850 Handle(TColStd_HArray1OfReal)& theResultRadius) {
2851 Standard_Integer aResult = 0;
2852 if ( !CheckTangentZonesExist( theSurface1, theSurface2 ) )
2853 return aResult;
2854
2855 IntTools_Context aContext;
2856
2857 TColgp_SequenceOfPnt2d aSeqResultS1, aSeqResultS2;
2858 TColStd_SequenceOfReal aSeqResultRad;
2859
2860 gp_Torus aTor1 = theSurface1->Torus();
2861 gp_Torus aTor2 = theSurface2->Torus();
2862
2863 gp_Ax2 anax1( aTor1.Location(), aTor1.Axis().Direction() );
2864 gp_Ax2 anax2( aTor2.Location(), aTor2.Axis().Direction() );
2865 Standard_Integer j = 0;
2866
2867 for ( j = 0; j < 2; j++ ) {
2868 Standard_Real aCoef = ( j == 0 ) ? -1 : 1;
2869 Standard_Real aRadius1 = fabs(aTor1.MajorRadius() + aCoef * aTor1.MinorRadius());
2870 Standard_Real aRadius2 = fabs(aTor2.MajorRadius() + aCoef * aTor2.MinorRadius());
2871
2872 gp_Circ aCircle1( anax1, aRadius1 );
2873 gp_Circ aCircle2( anax2, aRadius2 );
2874
2875 // roughly compute radius of tangent zone for perpendicular case
2876 Standard_Real aCriteria = Precision::Confusion() * 0.5;
2877
2878 Standard_Real aT1 = aCriteria;
2879 Standard_Real aT2 = aCriteria;
2880 if ( j == 0 ) {
2881 // internal tangency
2882 Standard_Real aR = ( aRadius1 > aTor2.MinorRadius() ) ? aRadius1 : aTor2.MinorRadius();
2883 //aT1 = aCriteria * aCriteria + aR * aR - ( aR - aCriteria ) * ( aR - aCriteria );
2884 aT1 = 2. * aR * aCriteria;
2885 aT2 = aT1;
2886 }
2887 else {
2888 // external tangency
2889 Standard_Real aRb = ( aRadius1 > aTor2.MinorRadius() ) ? aRadius1 : aTor2.MinorRadius();
2890 Standard_Real aRm = ( aRadius1 < aTor2.MinorRadius() ) ? aRadius1 : aTor2.MinorRadius();
2891 Standard_Real aDelta = aRb - aCriteria;
2892 aDelta *= aDelta;
2893 aDelta -= aRm * aRm;
2894 aDelta /= 2. * (aRb - aRm);
2895 aDelta -= 0.5 * (aRb - aRm);
2896
2897 aT1 = 2. * aRm * (aRm - aDelta);
2898 aT2 = aT1;
2899 }
2900 aCriteria = ( aT1 > aT2) ? aT1 : aT2;
2901 if ( aCriteria > 0 )
2902 aCriteria = sqrt( aCriteria );
2903
2904 if ( aCriteria > 0.5 * aTor1.MinorRadius() ) {
2905 // too big zone -> drop to minimum
2906 aCriteria = Precision::Confusion();
2907 }
2908
2909 GeomAdaptor_Curve aC1( new Geom_Circle(aCircle1) );
2910 GeomAdaptor_Curve aC2( new Geom_Circle(aCircle2) );
2911 Extrema_ExtCC anExtrema(aC1, aC2, 0, 2.*Standard_PI, 0, 2.*Standard_PI,
2912 Precision::PConfusion(), Precision::PConfusion());
2913
2914 if ( anExtrema.IsDone() ) {
2915
2916 Standard_Integer i = 0;
2917 for ( i = 1; i <= anExtrema.NbExt(); i++ ) {
2918 if ( anExtrema.SquareDistance(i) > aCriteria * aCriteria )
2919 continue;
2920
2921 Extrema_POnCurv P1, P2;
2922 anExtrema.Points( i, P1, P2 );
2923
2924 Standard_Boolean bFoundResult = Standard_True;
2925 gp_Pnt2d pr1, pr2;
2926
2927 Standard_Integer surfit = 0;
2928 for ( surfit = 0; surfit < 2; surfit++ ) {
2929 GeomAPI_ProjectPointOnSurf& aProjector = (surfit == 0) ? aContext.ProjPS(theFace1) : aContext.ProjPS(theFace2);
2930
2931 gp_Pnt aP3d = (surfit == 0) ? P1.Value() : P2.Value();
2932 aProjector.Perform(aP3d);
2933
2934 if(!aProjector.IsDone())
2935 bFoundResult = Standard_False;
2936 else {
2937 if(aProjector.LowerDistance() > aCriteria) {
2938 bFoundResult = Standard_False;
2939 }
2940 else {
2941 Standard_Real foundU = 0, foundV = 0;
2942 aProjector.LowerDistanceParameters(foundU, foundV);
2943 if ( surfit == 0 )
2944 pr1 = gp_Pnt2d( foundU, foundV );
2945 else
2946 pr2 = gp_Pnt2d( foundU, foundV );
2947 }
2948 }
2949 }
2950 if ( bFoundResult ) {
2951 aSeqResultS1.Append( pr1 );
2952 aSeqResultS2.Append( pr2 );
2953 aSeqResultRad.Append( aCriteria );
2954
2955 // torus is u and v periodic
2956 const Standard_Real twoPI = Standard_PI + Standard_PI;
2957 Standard_Real arr1tmp[2] = {pr1.X(), pr1.Y()};
2958 Standard_Real arr2tmp[2] = {pr2.X(), pr2.Y()};
2959
2960 // iteration on period bounds
2961 for ( Standard_Integer k1 = 0; k1 < 2; k1++ ) {
2962 Standard_Real aBound = ( k1 == 0 ) ? 0 : twoPI;
2963 Standard_Real aShift = ( k1 == 0 ) ? twoPI : -twoPI;
2964
2965 // iteration on surfaces
2966 for ( Standard_Integer k2 = 0; k2 < 2; k2++ ) {
2967 Standard_Real* arr1 = ( k2 == 0 ) ? arr1tmp : arr2tmp;
2968 Standard_Real* arr2 = ( k2 != 0 ) ? arr1tmp : arr2tmp;
2969 TColgp_SequenceOfPnt2d& aSeqS1 = ( k2 == 0 ) ? aSeqResultS1 : aSeqResultS2;
2970 TColgp_SequenceOfPnt2d& aSeqS2 = ( k2 != 0 ) ? aSeqResultS1 : aSeqResultS2;
2971
2972 if (fabs(arr1[0] - aBound) < Precision::PConfusion()) {
2973 aSeqS1.Append( gp_Pnt2d( arr1[0] + aShift, arr1[1] ) );
2974 aSeqS2.Append( gp_Pnt2d( arr2[0], arr2[1] ) );
2975 aSeqResultRad.Append( aCriteria );
2976 }
2977 if (fabs(arr1[1] - aBound) < Precision::PConfusion()) {
2978 aSeqS1.Append( gp_Pnt2d( arr1[0], arr1[1] + aShift) );
2979 aSeqS2.Append( gp_Pnt2d( arr2[0], arr2[1] ) );
2980 aSeqResultRad.Append( aCriteria );
2981 }
2982 }
2983 } //
2984 }
2985 }
2986 }
2987 }
2988 aResult = aSeqResultRad.Length();
2989
2990 if ( aResult > 0 ) {
2991 theResultOnS1 = new TColgp_HArray1OfPnt2d( 1, aResult );
2992 theResultOnS2 = new TColgp_HArray1OfPnt2d( 1, aResult );
2993 theResultRadius = new TColStd_HArray1OfReal( 1, aResult );
2994
2995 for ( Standard_Integer i = 1 ; i <= aResult; i++ ) {
2996 theResultOnS1->SetValue( i, aSeqResultS1.Value(i) );
2997 theResultOnS2->SetValue( i, aSeqResultS2.Value(i) );
2998 theResultRadius->SetValue( i, aSeqResultRad.Value(i) );
2999 }
3000 }
3001 return aResult;
3002}
3003
3004// ------------------------------------------------------------------------------------------------
3005// static function: AdjustByNeighbour
3006// purpose:
3007// ------------------------------------------------------------------------------------------------
3008gp_Pnt2d AdjustByNeighbour(const gp_Pnt2d& theaNeighbourPoint,
3009 const gp_Pnt2d& theOriginalPoint,
3010 Handle(GeomAdaptor_HSurface) theGASurface) {
3011
3012 gp_Pnt2d ap1 = theaNeighbourPoint;
3013 gp_Pnt2d ap2 = theOriginalPoint;
3014
3015 if ( theGASurface->IsUPeriodic() ) {
3016 Standard_Real aPeriod = theGASurface->UPeriod();
3017 gp_Pnt2d aPTest = ap2;
3018 Standard_Real aSqDistMin = 1.e+100;
3019
3020 for ( Standard_Integer pIt = -1; pIt <= 1; pIt++) {
3021 aPTest.SetX( theOriginalPoint.X() + aPeriod * pIt );
3022 Standard_Real dd = ap1.SquareDistance( aPTest );
3023
3024 if ( dd < aSqDistMin ) {
3025 ap2 = aPTest;
3026 aSqDistMin = dd;
3027 }
3028 }
3029 }
3030 if ( theGASurface->IsVPeriodic() ) {
3031 Standard_Real aPeriod = theGASurface->VPeriod();
3032 gp_Pnt2d aPTest = ap2;
3033 Standard_Real aSqDistMin = 1.e+100;
3034
3035 for ( Standard_Integer pIt = -1; pIt <= 1; pIt++) {
3036 aPTest.SetY( theOriginalPoint.Y() + aPeriod * pIt );
3037 Standard_Real dd = ap1.SquareDistance( aPTest );
3038
3039 if ( dd < aSqDistMin ) {
3040 ap2 = aPTest;
3041 aSqDistMin = dd;
3042 }
3043 }
3044 }
3045 return ap2;
3046}
3047
3048// ------------------------------------------------------------------------------------------------
3049//function: DecompositionOfWLine
3050// purpose:
3051// ------------------------------------------------------------------------------------------------
3052Standard_Boolean DecompositionOfWLine(const Handle(IntPatch_WLine)& theWLine,
3053 const Handle(GeomAdaptor_HSurface)& theSurface1,
3054 const Handle(GeomAdaptor_HSurface)& theSurface2,
3055 const TopoDS_Face& theFace1,
3056 const TopoDS_Face& theFace2,
3057 const IntTools_LineConstructor& theLConstructor,
3058 const Standard_Boolean theAvoidLConstructor,
3059 IntPatch_SequenceOfLine& theNewLines,
3060 Standard_Real& theReachedTol3d) {
3061
3062 Standard_Boolean bRet, bAvoidLineConstructor;
3063 Standard_Integer aNbPnts, aNbParts;
3064 //
3065 bRet=Standard_False;
3066 aNbPnts=theWLine->NbPnts();
3067 bAvoidLineConstructor=theAvoidLConstructor;
3068 //
3069 if(!aNbPnts){
3070 return bRet;
3071 }
3072 if (!bAvoidLineConstructor) {
3073 aNbParts=theLConstructor.NbParts();
3074 if (!aNbParts) {
3075 return bRet;
3076 }
3077 }
3078 //
3079 Standard_Boolean bIsPrevPointOnBoundary, bIsPointOnBoundary, bIsCurrentPointOnBoundary;
3080 Standard_Integer nblines, pit, i, j;
3081 Standard_Real aTol;
3082 TColStd_Array1OfListOfInteger anArrayOfLines(1, aNbPnts);
3083 TColStd_Array1OfInteger anArrayOfLineType(1, aNbPnts);
3084 TColStd_ListOfInteger aListOfPointIndex;
3085 IntTools_Context aContext;
3086
3087 Handle(TColgp_HArray1OfPnt2d) aTanZoneS1;
3088 Handle(TColgp_HArray1OfPnt2d) aTanZoneS2;
3089 Handle(TColStd_HArray1OfReal) aTanZoneRadius;
3090 Standard_Integer aNbZone = ComputeTangentZones( theSurface1, theSurface2, theFace1, theFace2,
3091 aTanZoneS1, aTanZoneS2, aTanZoneRadius );
3092
3093 //
3094 nblines=0;
3095 aTol=Precision::Confusion();
3096 aTol=0.5*aTol;
3097 bIsPrevPointOnBoundary=Standard_False;
3098 bIsPointOnBoundary=Standard_False;
3099 //
3100 // 1. ...
3101 //
3102 // Points
3103 for(pit = 1; pit <= aNbPnts; ++pit) {
3104 Standard_Boolean bIsOnFirstBoundary, isperiodic;
3105 Standard_Real aResolution, aPeriod, alowerboundary, aupperboundary, U, V;
3106 Standard_Real aParameter, anoffset, anAdjustPar;
3107 Standard_Real umin, umax, vmin, vmax;
3108 //
3109 bIsCurrentPointOnBoundary = Standard_False;
3110 const IntSurf_PntOn2S& aPoint = theWLine->Point(pit);
3111 //
3112 // Surface
3113 for(i = 0; i < 2; ++i) {
3114 Handle(GeomAdaptor_HSurface) aGASurface = (!i) ? theSurface1 : theSurface2;
3115 aGASurface->ChangeSurface().Surface()->Bounds(umin, umax, vmin, vmax);
3116 if(!i) {
3117 aPoint.ParametersOnS1(U, V);
3118 }
3119 else {
3120 aPoint.ParametersOnS2(U, V);
3121 }
3122 // U, V
3123 for(j = 0; j < 2; j++) {
3124 isperiodic = (!j) ? aGASurface->IsUPeriodic() : aGASurface->IsVPeriodic();
3125 if(!isperiodic){
3126 continue;
3127 }
3128 //
3129 if (!j) {
3130 aResolution=aGASurface->UResolution(aTol);
3131 aPeriod=aGASurface->UPeriod();
3132 alowerboundary=umin;
3133 aupperboundary=umax;
3134 aParameter=U;
3135 }
3136 else {
3137 aResolution=aGASurface->VResolution(aTol);
3138 aPeriod=aGASurface->VPeriod();
3139 alowerboundary=vmin;
3140 aupperboundary=vmax;
3141 aParameter=V;
3142 }
3143
3144 anoffset = 0.;
3145 anAdjustPar = AdjustPeriodic(aParameter,
3146 alowerboundary,
3147 aupperboundary,
3148 aPeriod,
3149 anoffset);
3150 //
3151 bIsOnFirstBoundary = Standard_True;// ?
3152 bIsPointOnBoundary=
3153 IsPointOnBoundary(anAdjustPar,
3154 alowerboundary,
3155 aupperboundary,
3156 aResolution,
3157 bIsOnFirstBoundary);
3158 //
3159 if(bIsPointOnBoundary) {
3160 bIsCurrentPointOnBoundary = Standard_True;
3161 break;
3162 }
3163 else {
3164 // check if a point belong to a tangent zone. Begin
3165 Standard_Integer zIt = 0;
3166 for ( zIt = 1; zIt <= aNbZone; zIt++ ) {
3167 gp_Pnt2d aPZone = (i == 0) ? aTanZoneS1->Value(zIt) : aTanZoneS2->Value(zIt);
3168 Standard_Real aZoneRadius = aTanZoneRadius->Value(zIt);
3169
3170 if ( IsInsideTanZone(gp_Pnt2d( U, V ), aPZone, aZoneRadius, aGASurface ) ) {
3171 // set boundary flag to split the curve by a tangent zone
3172 bIsPointOnBoundary = Standard_True;
3173 bIsCurrentPointOnBoundary = Standard_True;
3174 if ( theReachedTol3d < aZoneRadius ) {
3175 theReachedTol3d = aZoneRadius;
3176 }
3177 break;
3178 }
3179 }
3180 }
3181 }//for(j = 0; j < 2; j++) {
3182
3183 if(bIsCurrentPointOnBoundary){
3184 break;
3185 }
3186 }//for(i = 0; i < 2; ++i) {
3187 //
3188 if((bIsCurrentPointOnBoundary != bIsPrevPointOnBoundary)) {
3189 if(!aListOfPointIndex.IsEmpty()) {
3190 nblines++;
3191 anArrayOfLines.SetValue(nblines, aListOfPointIndex);
3192 anArrayOfLineType.SetValue(nblines, bIsPrevPointOnBoundary);
3193 aListOfPointIndex.Clear();
3194 }
3195 bIsPrevPointOnBoundary = bIsCurrentPointOnBoundary;
3196 }
3197 aListOfPointIndex.Append(pit);
3198 } //for(pit = 1; pit <= aNbPnts; ++pit) {
3199 //
3200 if(!aListOfPointIndex.IsEmpty()) {
3201 nblines++;
3202 anArrayOfLines.SetValue(nblines, aListOfPointIndex);
3203 anArrayOfLineType.SetValue(nblines, bIsPrevPointOnBoundary);
3204 aListOfPointIndex.Clear();
3205 }
3206 //
3207 if(nblines<=1) {
3208 return bRet; //Standard_False;
3209 }
3210 //
3211 //
3212 // 2. Correct wlines.begin
3213 TColStd_Array1OfListOfInteger anArrayOfLineEnds(1, nblines);
3214 Handle(IntSurf_LineOn2S) aSeqOfPntOn2S = new IntSurf_LineOn2S();
3215 //
3216 for(i = 1; i <= nblines; i++) {
3217 if(anArrayOfLineType.Value(i) != 0) {
3218 continue;
3219 }
3220 const TColStd_ListOfInteger& aListOfIndex = anArrayOfLines.Value(i);
3221 if(aListOfIndex.Extent() < 2) {
3222 continue;
3223 }
3224 TColStd_ListOfInteger aListOfFLIndex;
3225
3226 for(j = 0; j < 2; j++) {
3227 Standard_Integer aneighbourindex = (j == 0) ? (i - 1) : (i + 1);
3228
3229 if((aneighbourindex < 1) || (aneighbourindex > nblines))
3230 continue;
3231
3232 if(anArrayOfLineType.Value(aneighbourindex) == 0)
3233 continue;
3234 const TColStd_ListOfInteger& aNeighbour = anArrayOfLines.Value(aneighbourindex);
3235 Standard_Integer anIndex = (j == 0) ? aNeighbour.Last() : aNeighbour.First();
3236 const IntSurf_PntOn2S& aPoint = theWLine->Point(anIndex);
3237
3238 IntSurf_PntOn2S aNewP = aPoint;
3239
3240 for(Standard_Integer surfit = 0; surfit < 2; surfit++) {
3241
3242 Handle(GeomAdaptor_HSurface) aGASurface = (surfit == 0) ? theSurface1 : theSurface2;
3243 Standard_Real umin=0., umax=0., vmin=0., vmax=0.;
3244 aGASurface->ChangeSurface().Surface()->Bounds(umin, umax, vmin, vmax);
3245 Standard_Real U=0., V=0.;
3246
3247 if(surfit == 0)
3248 aNewP.ParametersOnS1(U, V);
3249 else
3250 aNewP.ParametersOnS2(U, V);
3251 Standard_Integer nbboundaries = 0;
3252
3253 Standard_Boolean bIsNearBoundary = Standard_False;
3254 Standard_Integer aZoneIndex = 0;
3255 Standard_Integer bIsUBoundary = Standard_False; // use if nbboundaries == 1
3256 Standard_Integer bIsFirstBoundary = Standard_False; // use if nbboundaries == 1
3257
3258
3259 for(Standard_Integer parit = 0; parit < 2; parit++) {
3260 Standard_Boolean isperiodic = (parit == 0) ? aGASurface->IsUPeriodic() : aGASurface->IsVPeriodic();
3261
3262 Standard_Real aResolution = (parit == 0) ? aGASurface->UResolution(aTol) : aGASurface->VResolution(aTol);
3263 Standard_Real alowerboundary = (parit == 0) ? umin : vmin;
3264 Standard_Real aupperboundary = (parit == 0) ? umax : vmax;
3265
3266 Standard_Real aParameter = (parit == 0) ? U : V;
3267 Standard_Boolean bIsOnFirstBoundary = Standard_True;
3268
3269 if(!isperiodic) {
3270 bIsPointOnBoundary=
3271 IsPointOnBoundary(aParameter, alowerboundary, aupperboundary, aResolution, bIsOnFirstBoundary);
3272 if(bIsPointOnBoundary) {
3273 bIsUBoundary = (parit == 0);
3274 bIsFirstBoundary = bIsOnFirstBoundary;
3275 nbboundaries++;
3276 }
3277 }
3278 else {
3279 Standard_Real aPeriod = (parit == 0) ? aGASurface->UPeriod() : aGASurface->VPeriod();
3280 Standard_Real anoffset = 0.;
3281 Standard_Real anAdjustPar = AdjustPeriodic(aParameter, alowerboundary, aupperboundary, aPeriod, anoffset);
3282
3283 bIsPointOnBoundary=
3284 IsPointOnBoundary(anAdjustPar, alowerboundary, aupperboundary, aResolution, bIsOnFirstBoundary);
3285 if(bIsPointOnBoundary) {
3286 bIsUBoundary = (parit == 0);
3287 bIsFirstBoundary = bIsOnFirstBoundary;
3288 nbboundaries++;
3289 }
3290 else {
3291 //check neighbourhood of boundary
3292 Standard_Real anEpsilon = aResolution * 100.;
3293 Standard_Real aPart = ( aupperboundary - alowerboundary ) * 0.1;
3294 anEpsilon = ( anEpsilon > aPart ) ? aPart : anEpsilon;
3295
3296 bIsNearBoundary = IsPointOnBoundary(anAdjustPar, alowerboundary, aupperboundary,
3297 anEpsilon, bIsOnFirstBoundary);
3298
3299 }
3300 }
3301 }
3302
3303 // check if a point belong to a tangent zone. Begin
3304 for ( Standard_Integer zIt = 1; zIt <= aNbZone; zIt++ ) {
3305 gp_Pnt2d aPZone = (surfit == 0) ? aTanZoneS1->Value(zIt) : aTanZoneS2->Value(zIt);
3306 Standard_Real aZoneRadius = aTanZoneRadius->Value(zIt);
3307
3308 Standard_Integer aneighbourpointindex1 = (j == 0) ? aListOfIndex.First() : aListOfIndex.Last();
3309 const IntSurf_PntOn2S& aNeighbourPoint = theWLine->Point(aneighbourpointindex1);
3310 Standard_Real nU1, nV1;
3311
3312 if(surfit == 0)
3313 aNeighbourPoint.ParametersOnS1(nU1, nV1);
3314 else
3315 aNeighbourPoint.ParametersOnS2(nU1, nV1);
3316 gp_Pnt2d ap1(nU1, nV1);
3317 gp_Pnt2d ap2 = AdjustByNeighbour( ap1, gp_Pnt2d( U, V ), aGASurface );
3318
3319
3320 if ( IsInsideTanZone( ap2, aPZone, aZoneRadius, aGASurface ) ) {
3321 aZoneIndex = zIt;
3322 bIsNearBoundary = Standard_True;
3323 if ( theReachedTol3d < aZoneRadius ) {
3324 theReachedTol3d = aZoneRadius;
3325 }
3326 }
3327 }
3328 // check if a point belong to a tangent zone. End
3329 Standard_Boolean bComputeLineEnd = Standard_False;
3330
3331 if(nbboundaries == 2) {
3332 //xf
3333 //bComputeLineEnd = Standard_True;
3334 //xt
3335 }
3336 else if(nbboundaries == 1) {
3337 Standard_Boolean isperiodic = (bIsUBoundary) ? aGASurface->IsUPeriodic() : aGASurface->IsVPeriodic();
3338
3339 if(isperiodic) {
3340 Standard_Real alowerboundary = (bIsUBoundary) ? umin : vmin;
3341 Standard_Real aupperboundary = (bIsUBoundary) ? umax : vmax;
3342 Standard_Real aPeriod = (bIsUBoundary) ? aGASurface->UPeriod() : aGASurface->VPeriod();
3343 Standard_Real aParameter = (bIsUBoundary) ? U : V;
3344 Standard_Real anoffset = 0.;
3345 Standard_Real anAdjustPar = AdjustPeriodic(aParameter, alowerboundary, aupperboundary, aPeriod, anoffset);
3346
3347 Standard_Real adist = (bIsFirstBoundary) ? fabs(anAdjustPar - alowerboundary) : fabs(anAdjustPar - aupperboundary);
3348 Standard_Real anotherPar = (bIsFirstBoundary) ? (aupperboundary - adist) : (alowerboundary + adist);
3349 anotherPar += anoffset;
3350 Standard_Integer aneighbourpointindex = (j == 0) ? aListOfIndex.First() : aListOfIndex.Last();
3351 const IntSurf_PntOn2S& aNeighbourPoint = theWLine->Point(aneighbourpointindex);
3352 Standard_Real nU1, nV1;
3353
3354 if(surfit == 0)
3355 aNeighbourPoint.ParametersOnS1(nU1, nV1);
3356 else
3357 aNeighbourPoint.ParametersOnS2(nU1, nV1);
3358
3359 Standard_Real adist1 = (bIsUBoundary) ? fabs(nU1 - U) : fabs(nV1 - V);
3360 Standard_Real adist2 = (bIsUBoundary) ? fabs(nU1 - anotherPar) : fabs(nV1 - anotherPar);
3361 bComputeLineEnd = Standard_True;
3362 Standard_Boolean bCheckAngle1 = Standard_False;
3363 Standard_Boolean bCheckAngle2 = Standard_False;
3364 gp_Vec2d aNewVec;
3365 Standard_Real anewU = (bIsUBoundary) ? anotherPar : U;
3366 Standard_Real anewV = (bIsUBoundary) ? V : anotherPar;
3367
3368 if(((adist1 - adist2) > Precision::PConfusion()) &&
3369 (adist2 < (aPeriod / 4.))) {
3370 bCheckAngle1 = Standard_True;
3371 aNewVec = gp_Vec2d(gp_Pnt2d(nU1, nV1), gp_Pnt2d(anewU, anewV));
3372
3373 if(aNewVec.SquareMagnitude() < (gp::Resolution() * gp::Resolution())) {
3374 aNewP.SetValue((surfit == 0), anewU, anewV);
3375 bCheckAngle1 = Standard_False;
3376 }
3377 }
3378 else if(adist1 < (aPeriod / 4.)) {
3379 bCheckAngle2 = Standard_True;
3380 aNewVec = gp_Vec2d(gp_Pnt2d(nU1, nV1), gp_Pnt2d(U, V));
3381
3382 if(aNewVec.SquareMagnitude() < (gp::Resolution() * gp::Resolution())) {
3383 bCheckAngle2 = Standard_False;
3384 }
3385 }
3386
3387 if(bCheckAngle1 || bCheckAngle2) {
3388 // assume there are at least two points in line (see "if" above)
3389 Standard_Integer anindexother = aneighbourpointindex;
3390
3391 while((anindexother <= aListOfIndex.Last()) && (anindexother >= aListOfIndex.First())) {
3392 anindexother = (j == 0) ? (anindexother + 1) : (anindexother - 1);
3393 const IntSurf_PntOn2S& aPrevNeighbourPoint = theWLine->Point(anindexother);
3394 Standard_Real nU2, nV2;
3395
3396 if(surfit == 0)
3397 aPrevNeighbourPoint.ParametersOnS1(nU2, nV2);
3398 else
3399 aPrevNeighbourPoint.ParametersOnS2(nU2, nV2);
3400 gp_Vec2d aVecOld(gp_Pnt2d(nU2, nV2), gp_Pnt2d(nU1, nV1));
3401
3402 if(aVecOld.SquareMagnitude() <= (gp::Resolution() * gp::Resolution())) {
3403 continue;
3404 }
3405 else {
3406 Standard_Real anAngle = aNewVec.Angle(aVecOld);
3407
3408 if((fabs(anAngle) < (Standard_PI * 0.25)) && (aNewVec.Dot(aVecOld) > 0.)) {
3409
3410 if(bCheckAngle1) {
3411 Standard_Real U1, U2, V1, V2;
3412 IntSurf_PntOn2S atmppoint = aNewP;
3413 atmppoint.SetValue((surfit == 0), anewU, anewV);
3414 atmppoint.Parameters(U1, V1, U2, V2);
3415 gp_Pnt P1 = theSurface1->Value(U1, V1);
3416 gp_Pnt P2 = theSurface2->Value(U2, V2);
3417 gp_Pnt P0 = aPoint.Value();
3418
3419 if(P0.IsEqual(P1, aTol) &&
3420 P0.IsEqual(P2, aTol) &&
3421 P1.IsEqual(P2, aTol)) {
3422 bComputeLineEnd = Standard_False;
3423 aNewP.SetValue((surfit == 0), anewU, anewV);
3424 }
3425 }
3426
3427 if(bCheckAngle2) {
3428 bComputeLineEnd = Standard_False;
3429 }
3430 }
3431 break;
3432 }
3433 } // end while(anindexother...)
3434 }
3435 }
3436 }
3437 else if ( bIsNearBoundary ) {
3438 bComputeLineEnd = Standard_True;
3439 }
3440
3441 if(bComputeLineEnd) {
3442
3443 gp_Pnt2d anewpoint;
3444 Standard_Boolean found = Standard_False;
3445
3446 if ( bIsNearBoundary ) {
3447 // re-compute point near natural boundary or near tangent zone
3448 Standard_Real u1, v1, u2, v2;
3449 aNewP.Parameters( u1, v1, u2, v2 );
3450 if(surfit == 0)
3451 anewpoint = gp_Pnt2d( u1, v1 );
3452 else
3453 anewpoint = gp_Pnt2d( u2, v2 );
3454
3455 Standard_Integer aneighbourpointindex1 = (j == 0) ? aListOfIndex.First() : aListOfIndex.Last();
3456 const IntSurf_PntOn2S& aNeighbourPoint = theWLine->Point(aneighbourpointindex1);
3457 Standard_Real nU1, nV1;
3458
3459 if(surfit == 0)
3460 aNeighbourPoint.ParametersOnS1(nU1, nV1);
3461 else
3462 aNeighbourPoint.ParametersOnS2(nU1, nV1);
3463 gp_Pnt2d ap1(nU1, nV1);
3464 gp_Pnt2d ap2;
3465
3466
3467 if ( aZoneIndex ) {
3468 // exclude point from a tangent zone
3469 anewpoint = AdjustByNeighbour( ap1, anewpoint, aGASurface );
3470 gp_Pnt2d aPZone = (surfit == 0) ? aTanZoneS1->Value(aZoneIndex) : aTanZoneS2->Value(aZoneIndex);
3471 Standard_Real aZoneRadius = aTanZoneRadius->Value(aZoneIndex);
3472
3473 if ( FindPoint(ap1, anewpoint, umin, umax, vmin, vmax,
3474 aPZone, aZoneRadius, aGASurface, ap2) ) {
3475 anewpoint = ap2;
3476 found = Standard_True;
3477 }
3478 }
3479 else if ( aGASurface->IsUPeriodic() || aGASurface->IsVPeriodic() ) {
3480 // re-compute point near boundary if shifted on a period
3481 ap2 = AdjustByNeighbour( ap1, anewpoint, aGASurface );
3482
3483 if ( ( ap2.X() < umin ) || ( ap2.X() > umax ) ||
3484 ( ap2.Y() < vmin ) || ( ap2.Y() > vmax ) ) {
3485 found = FindPoint(ap1, ap2, umin, umax, vmin, vmax, anewpoint);
3486 }
3487 else {
3488 anewpoint = ap2;
3489 aNewP.SetValue( (surfit == 0), anewpoint.X(), anewpoint.Y() );
3490 }
3491 }
3492 }
3493 else {
3494
3495 Standard_Integer aneighbourpointindex1 = (j == 0) ? aListOfIndex.First() : aListOfIndex.Last();
3496 const IntSurf_PntOn2S& aNeighbourPoint = theWLine->Point(aneighbourpointindex1);
3497 Standard_Real nU1, nV1;
3498
3499 if(surfit == 0)
3500 aNeighbourPoint.ParametersOnS1(nU1, nV1);
3501 else
3502 aNeighbourPoint.ParametersOnS2(nU1, nV1);
3503 gp_Pnt2d ap1(nU1, nV1);
3504 gp_Pnt2d ap2(nU1, nV1);
3505 Standard_Integer aneighbourpointindex2 = aneighbourpointindex1;
3506
3507 while((aneighbourpointindex2 <= aListOfIndex.Last()) && (aneighbourpointindex2 >= aListOfIndex.First())) {
3508 aneighbourpointindex2 = (j == 0) ? (aneighbourpointindex2 + 1) : (aneighbourpointindex2 - 1);
3509 const IntSurf_PntOn2S& aPrevNeighbourPoint = theWLine->Point(aneighbourpointindex2);
3510 Standard_Real nU2, nV2;
3511
3512 if(surfit == 0)
3513 aPrevNeighbourPoint.ParametersOnS1(nU2, nV2);
3514 else
3515 aPrevNeighbourPoint.ParametersOnS2(nU2, nV2);
3516 ap2.SetX(nU2);
3517 ap2.SetY(nV2);
3518
3519 if(ap1.SquareDistance(ap2) > (gp::Resolution() * gp::Resolution())) {
3520 break;
3521 }
3522 }
3523 found = FindPoint(ap2, ap1, umin, umax, vmin, vmax, anewpoint);
3524 }
3525
3526 if(found) {
3527 // check point
3528 Standard_Real aCriteria = BRep_Tool::Tolerance(theFace1) + BRep_Tool::Tolerance(theFace2);
3529 GeomAPI_ProjectPointOnSurf& aProjector = (surfit == 0) ? aContext.ProjPS(theFace2) : aContext.ProjPS(theFace1);
3530 Handle(GeomAdaptor_HSurface) aSurface = (surfit == 0) ? theSurface1 : theSurface2;
3531
3532 Handle(GeomAdaptor_HSurface) aSurfaceOther = (surfit == 0) ? theSurface2 : theSurface1;
3533
3534 gp_Pnt aP3d = aSurface->Value(anewpoint.X(), anewpoint.Y());
3535 aProjector.Perform(aP3d);
3536
3537 if(aProjector.IsDone()) {
3538 if(aProjector.LowerDistance() < aCriteria) {
3539 Standard_Real foundU = U, foundV = V;
3540 aProjector.LowerDistanceParameters(foundU, foundV);
3541
3542 //Correction of projected coordinates. Begin
3543 //Note, it may be shifted on a period
3544 Standard_Integer aneindex1 = (j == 0) ? aListOfIndex.First() : aListOfIndex.Last();
3545 const IntSurf_PntOn2S& aNeighbourPoint = theWLine->Point(aneindex1);
3546 Standard_Real nUn, nVn;
3547
3548 if(surfit == 0)
3549 aNeighbourPoint.ParametersOnS2(nUn, nVn);
3550 else
3551 aNeighbourPoint.ParametersOnS1(nUn, nVn);
3552 gp_Pnt2d aNeighbour2d(nUn, nVn);
3553 gp_Pnt2d anAdjustedPoint = AdjustByNeighbour( aNeighbour2d, gp_Pnt2d(foundU, foundV), aSurfaceOther );
3554 foundU = anAdjustedPoint.X();
3555 foundV = anAdjustedPoint.Y();
3556
3557 if ( ( anAdjustedPoint.X() < umin ) && ( anAdjustedPoint.X() > umax ) &&
3558 ( anAdjustedPoint.Y() < vmin ) && ( anAdjustedPoint.Y() > vmax ) ) {
3559 // attempt to roughly re-compute point
3560 foundU = ( foundU < umin ) ? umin : foundU;
3561 foundU = ( foundU > umax ) ? umax : foundU;
3562 foundV = ( foundV < vmin ) ? vmin : foundV;
3563 foundV = ( foundV > vmax ) ? vmax : foundV;
3564
3565 GeomAPI_ProjectPointOnSurf& aProjector2 = (surfit == 0) ? aContext.ProjPS(theFace1) : aContext.ProjPS(theFace2);
3566
3567 aP3d = aSurfaceOther->Value(foundU, foundV);
3568 aProjector2.Perform(aP3d);
3569
3570 if(aProjector2.IsDone()) {
3571 if(aProjector2.LowerDistance() < aCriteria) {
3572 Standard_Real foundU2 = anewpoint.X(), foundV2 = anewpoint.Y();
3573 aProjector2.LowerDistanceParameters(foundU2, foundV2);
3574 anewpoint.SetX(foundU2);
3575 anewpoint.SetY(foundV2);
3576 }
3577 }
3578 }
3579 //Correction of projected coordinates. End
3580
3581 if(surfit == 0)
3582 aNewP.SetValue(aP3d, anewpoint.X(), anewpoint.Y(), foundU, foundV);
3583 else
3584 aNewP.SetValue(aP3d, foundU, foundV, anewpoint.X(), anewpoint.Y());
3585 }
3586 }
3587 }
3588 }
3589 }
3590 aSeqOfPntOn2S->Add(aNewP);
3591 aListOfFLIndex.Append(aSeqOfPntOn2S->NbPoints());
3592 }
3593 anArrayOfLineEnds.SetValue(i, aListOfFLIndex);
3594 }
3595 // Correct wlines.end
3596
3597 // Split wlines.begin
3598 Standard_Integer nbiter;
3599 //
3600 nbiter=1;
3601 if (!bAvoidLineConstructor) {
3602 nbiter=theLConstructor.NbParts();
3603 }
3604 //
3605 for(j = 1; j <= nbiter; ++j) {
3606 Standard_Real fprm, lprm;
3607 Standard_Integer ifprm, ilprm;
3608 //
3609 if(bAvoidLineConstructor) {
3610 ifprm = 1;
3611 ilprm = theWLine->NbPnts();
3612 }
3613 else {
3614 theLConstructor.Part(j, fprm, lprm);
3615 ifprm = (Standard_Integer)fprm;
3616 ilprm = (Standard_Integer)lprm;
3617 }
3618
3619 Handle(IntSurf_LineOn2S) aLineOn2S = new IntSurf_LineOn2S();
3620 //
3621 for(i = 1; i <= nblines; i++) {
3622 if(anArrayOfLineType.Value(i) != 0) {
3623 continue;
3624 }
3625 const TColStd_ListOfInteger& aListOfIndex = anArrayOfLines.Value(i);
3626
3627 if(aListOfIndex.Extent() < 2) {
3628 continue;
3629 }
3630 const TColStd_ListOfInteger& aListOfFLIndex = anArrayOfLineEnds.Value(i);
3631 Standard_Boolean bhasfirstpoint = (aListOfFLIndex.Extent() == 2);
3632 Standard_Boolean bhaslastpoint = (aListOfFLIndex.Extent() == 2);
3633
3634 if(!bhasfirstpoint && !aListOfFLIndex.IsEmpty()) {
3635 bhasfirstpoint = (i != 1);
3636 }
3637
3638 if(!bhaslastpoint && !aListOfFLIndex.IsEmpty()) {
3639 bhaslastpoint = (i != nblines);
3640 }
3641 Standard_Boolean bIsFirstInside = ((ifprm >= aListOfIndex.First()) && (ifprm <= aListOfIndex.Last()));
3642 Standard_Boolean bIsLastInside = ((ilprm >= aListOfIndex.First()) && (ilprm <= aListOfIndex.Last()));
3643
3644 if(!bIsFirstInside && !bIsLastInside) {
3645 if((ifprm < aListOfIndex.First()) && (ilprm > aListOfIndex.Last())) {
3646 // append whole line, and boundaries if neccesary
3647 if(bhasfirstpoint) {
3648 const IntSurf_PntOn2S& aP = aSeqOfPntOn2S->Value(aListOfFLIndex.First());
3649 aLineOn2S->Add(aP);
3650 }
3651 TColStd_ListIteratorOfListOfInteger anIt(aListOfIndex);
3652
3653 for(; anIt.More(); anIt.Next()) {
3654 const IntSurf_PntOn2S& aP = theWLine->Point(anIt.Value());
3655 aLineOn2S->Add(aP);
3656 }
3657
3658 if(bhaslastpoint) {
3659 const IntSurf_PntOn2S& aP = aSeqOfPntOn2S->Value(aListOfFLIndex.Last());
3660 aLineOn2S->Add(aP);
3661 }
3662
3663 // check end of split line (end is almost always)
3664 Standard_Integer aneighbour = i + 1;
3665 Standard_Boolean bIsEndOfLine = Standard_True;
3666
3667 if(aneighbour <= nblines) {
3668 const TColStd_ListOfInteger& aListOfNeighbourIndex = anArrayOfLines.Value(aneighbour);
3669
3670 if((anArrayOfLineType.Value(aneighbour) != 0) &&
3671 (aListOfNeighbourIndex.IsEmpty())) {
3672 bIsEndOfLine = Standard_False;
3673 }
3674 }
3675
3676 if(bIsEndOfLine) {
3677 if(aLineOn2S->NbPoints() > 1) {
3678 Handle(IntPatch_WLine) aNewWLine =
3679 new IntPatch_WLine(aLineOn2S, Standard_False);
3680 theNewLines.Append(aNewWLine);
3681 }
3682 aLineOn2S = new IntSurf_LineOn2S();
3683 }
3684 }
3685 continue;
3686 }
3687 // end if(!bIsFirstInside && !bIsLastInside)
3688
3689 if(bIsFirstInside && bIsLastInside) {
3690 // append inside points between ifprm and ilprm
3691 TColStd_ListIteratorOfListOfInteger anIt(aListOfIndex);
3692
3693 for(; anIt.More(); anIt.Next()) {
3694 if((anIt.Value() < ifprm) || (anIt.Value() > ilprm))
3695 continue;
3696 const IntSurf_PntOn2S& aP = theWLine->Point(anIt.Value());
3697 aLineOn2S->Add(aP);
3698 }
3699 }
3700 else {
3701
3702 if(bIsFirstInside) {
3703 // append points from ifprm to last point + boundary point
3704 TColStd_ListIteratorOfListOfInteger anIt(aListOfIndex);
3705
3706 for(; anIt.More(); anIt.Next()) {
3707 if(anIt.Value() < ifprm)
3708 continue;
3709 const IntSurf_PntOn2S& aP = theWLine->Point(anIt.Value());
3710 aLineOn2S->Add(aP);
3711 }
3712
3713 if(bhaslastpoint) {
3714 const IntSurf_PntOn2S& aP = aSeqOfPntOn2S->Value(aListOfFLIndex.Last());
3715 aLineOn2S->Add(aP);
3716 }
3717 // check end of split line (end is almost always)
3718 Standard_Integer aneighbour = i + 1;
3719 Standard_Boolean bIsEndOfLine = Standard_True;
3720
3721 if(aneighbour <= nblines) {
3722 const TColStd_ListOfInteger& aListOfNeighbourIndex = anArrayOfLines.Value(aneighbour);
3723
3724 if((anArrayOfLineType.Value(aneighbour) != 0) &&
3725 (aListOfNeighbourIndex.IsEmpty())) {
3726 bIsEndOfLine = Standard_False;
3727 }
3728 }
3729
3730 if(bIsEndOfLine) {
3731 if(aLineOn2S->NbPoints() > 1) {
3732 Handle(IntPatch_WLine) aNewWLine =
3733 new IntPatch_WLine(aLineOn2S, Standard_False);
3734 theNewLines.Append(aNewWLine);
3735 }
3736 aLineOn2S = new IntSurf_LineOn2S();
3737 }
3738 }
3739 // end if(bIsFirstInside)
3740
3741 if(bIsLastInside) {
3742 // append points from first boundary point to ilprm
3743 if(bhasfirstpoint) {
3744 const IntSurf_PntOn2S& aP = aSeqOfPntOn2S->Value(aListOfFLIndex.First());
3745 aLineOn2S->Add(aP);
3746 }
3747 TColStd_ListIteratorOfListOfInteger anIt(aListOfIndex);
3748
3749 for(; anIt.More(); anIt.Next()) {
3750 if(anIt.Value() > ilprm)
3751 continue;
3752 const IntSurf_PntOn2S& aP = theWLine->Point(anIt.Value());
3753 aLineOn2S->Add(aP);
3754 }
3755 }
3756 //end if(bIsLastInside)
3757 }
3758 }
3759
3760 if(aLineOn2S->NbPoints() > 1) {
3761 Handle(IntPatch_WLine) aNewWLine =
3762 new IntPatch_WLine(aLineOn2S, Standard_False);
3763 theNewLines.Append(aNewWLine);
3764 }
3765 }
3766 // Split wlines.end
3767
3768 return Standard_True;
3769}
3770
3771// ------------------------------------------------------------------------------------------------
3772// static function: ParameterOutOfBoundary
3773// purpose: Computes a new parameter for given curve. The corresponding 2d points
81bba717 3774// do not lie on any boundary of given faces
7fd59977 3775// ------------------------------------------------------------------------------------------------
3776Standard_Boolean ParameterOutOfBoundary(const Standard_Real theParameter,
3777 const Handle(Geom_Curve)& theCurve,
3778 const TopoDS_Face& theFace1,
3779 const TopoDS_Face& theFace2,
3780 const Standard_Real theOtherParameter,
3781 const Standard_Boolean bIncreasePar,
3782 Standard_Real& theNewParameter) {
3783 Standard_Boolean bIsComputed = Standard_False;
3784 theNewParameter = theParameter;
3785
3786 IntTools_Context aContext;
3787 Standard_Real acurpar = theParameter;
3788 TopAbs_State aState = TopAbs_ON;
3789 Standard_Integer iter = 0;
3790 Standard_Real asumtol = BRep_Tool::Tolerance(theFace1) + BRep_Tool::Tolerance(theFace2);
3791 Standard_Real adelta = asumtol * 0.1;
3792 adelta = (adelta < Precision::Confusion()) ? Precision::Confusion() : adelta;
3793 Handle(Geom_Surface) aSurf1 = BRep_Tool::Surface(theFace1);
3794 Handle(Geom_Surface) aSurf2 = BRep_Tool::Surface(theFace2);
3795
3796 Standard_Real u1, u2, v1, v2;
3797
3798 GeomAPI_ProjectPointOnSurf aPrj1;
3799 aSurf1->Bounds(u1, u2, v1, v2);
3800 aPrj1.Init(aSurf1, u1, u2, v1, v2);
3801
3802 GeomAPI_ProjectPointOnSurf aPrj2;
3803 aSurf2->Bounds(u1, u2, v1, v2);
3804 aPrj2.Init(aSurf2, u1, u2, v1, v2);
3805
3806 while(aState == TopAbs_ON) {
3807 if(bIncreasePar)
3808 acurpar += adelta;
3809 else
3810 acurpar -= adelta;
3811 gp_Pnt aPCurrent = theCurve->Value(acurpar);
3812 aPrj1.Perform(aPCurrent);
3813 Standard_Real U=0., V=0.;
3814
3815 if(aPrj1.IsDone()) {
3816 aPrj1.LowerDistanceParameters(U, V);
3817 aState = aContext.StatePointFace(theFace1, gp_Pnt2d(U, V));
3818 }
3819
3820 if(aState != TopAbs_ON) {
3821 aPrj2.Perform(aPCurrent);
3822
3823 if(aPrj2.IsDone()) {
3824 aPrj2.LowerDistanceParameters(U, V);
3825 aState = aContext.StatePointFace(theFace2, gp_Pnt2d(U, V));
3826 }
3827 }
3828
3829 if(iter > 11) {
3830 break;
3831 }
3832 iter++;
3833 }
3834
3835 if(iter <= 11) {
3836 theNewParameter = acurpar;
3837 bIsComputed = Standard_True;
3838
3839 if(bIncreasePar) {
3840 if(acurpar >= theOtherParameter)
3841 theNewParameter = theOtherParameter;
3842 }
3843 else {
3844 if(acurpar <= theOtherParameter)
3845 theNewParameter = theOtherParameter;
3846 }
3847 }
3848 return bIsComputed;
3849}
3850
3851Standard_Boolean IsCurveValid(Handle(Geom2d_Curve)& thePCurve)
3852{
3853 if(thePCurve.IsNull())
3854 return Standard_False;
3855
3856 Standard_Real tolint = 1.e-10;
3857 Geom2dAdaptor_Curve PCA;
3858 IntRes2d_Domain PCD;
3859 Geom2dInt_GInter PCI;
3860
3861 Standard_Real pf = 0., pl = 0.;
3862 gp_Pnt2d pntf, pntl;
3863
3864 if(!thePCurve->IsClosed() && !thePCurve->IsPeriodic()) {
3865 pf = thePCurve->FirstParameter();
3866 pl = thePCurve->LastParameter();
3867 pntf = thePCurve->Value(pf);
3868 pntl = thePCurve->Value(pl);
3869 PCA.Load(thePCurve);
3870 if(!PCA.IsPeriodic()) {
3871 if(PCA.FirstParameter() > pf) pf = PCA.FirstParameter();
3872 if(PCA.LastParameter() < pl) pl = PCA.LastParameter();
3873 }
3874 PCD.SetValues(pntf,pf,tolint,pntl,pl,tolint);
3875 PCI.Perform(PCA,PCD,tolint,tolint);
3876 if(PCI.IsDone())
3877 if(PCI.NbPoints() > 0) {
3878 return Standard_False;
3879 }
3880 }
3881
3882 return Standard_True;
3883}
3884
3885//=======================================================================
3886//static function : ApproxWithPCurves
3887//purpose : for bug 20964 only
3888//=======================================================================
3889
3890Standard_Boolean ApproxWithPCurves(const gp_Cylinder& theCyl,
3891 const gp_Sphere& theSph)
3892{
3893 Standard_Boolean bRes = Standard_True;
3894 Standard_Real R1 = theCyl.Radius(), R2 = theSph.Radius();
3895
3896 if(R1 < 2.*R2) return bRes;
3897
3898 gp_Lin anCylAx(theCyl.Axis());
3899
3900 Standard_Real aDist = anCylAx.Distance(theSph.Location());
3901 Standard_Real aDRel = Abs(aDist - R1)/R2;
3902
3903 if(aDRel > .2) return bRes;
3904
3905 Standard_Real par = ElCLib::Parameter(anCylAx, theSph.Location());
3906 gp_Pnt aP = ElCLib::Value(par, anCylAx);
3907 gp_Vec aV(aP, theSph.Location());
3908
3909 Standard_Real dd = aV.Dot(theSph.Position().XDirection());
3910
3911 if(aDist < R1 && dd > 0.) return Standard_False;
3912 if(aDist > R1 && dd < 0.) return Standard_False;
3913
3914
3915 return bRes;
3916}
3917
3918//=======================================================================
3919//function : PerformPlanes
3920//purpose :
3921//=======================================================================
3922
3923void PerformPlanes(const Handle(GeomAdaptor_HSurface)& theS1,
3924 const Handle(GeomAdaptor_HSurface)& theS2,
3925 const Standard_Real TolAng,
3926 const Standard_Real TolTang,
3927 const Standard_Boolean theApprox1,
3928 const Standard_Boolean theApprox2,
3929 IntTools_SequenceOfCurves& theSeqOfCurve,
3930 Standard_Boolean& theTangentFaces)
3931{
3932
3933 gp_Pln aPln1 = theS1->Surface().Plane();
3934 gp_Pln aPln2 = theS2->Surface().Plane();
3935
3936 IntAna_QuadQuadGeo aPlnInter(aPln1, aPln2, TolAng, TolTang);
3937
3938 if(!aPlnInter.IsDone()) {
3939 theTangentFaces = Standard_False;
3940 return;
3941 }
3942
3943 IntAna_ResultType aResType = aPlnInter.TypeInter();
3944
3945 if(aResType == IntAna_Same) {
3946 theTangentFaces = Standard_True;
3947 return;
3948 }
3949
3950 theTangentFaces = Standard_False;
3951
3952 if(aResType == IntAna_Empty) {
3953 return;
3954 }
3955
3956 gp_Lin aLin = aPlnInter.Line(1);
3957
3958 ProjLib_Plane aProj;
3959
3960 aProj.Init(aPln1);
3961 aProj.Project(aLin);
3962 gp_Lin2d aLin2d1 = aProj.Line();
3963 //
3964 aProj.Init(aPln2);
3965 aProj.Project(aLin);
3966 gp_Lin2d aLin2d2 = aProj.Line();
3967 //
3968 //classify line2d1 relatively first plane
3969 Standard_Real P11, P12;
3970 Standard_Boolean IsCrossed = ClassifyLin2d(theS1, aLin2d1, TolTang, P11, P12);
3971 if(!IsCrossed) return;
3972 //classify line2d2 relatively second plane
3973 Standard_Real P21, P22;
3974 IsCrossed = ClassifyLin2d(theS2, aLin2d2, TolTang, P21, P22);
3975 if(!IsCrossed) return;
3976
3977 //Analysis of parametric intervals: must have common part
3978
3979 if(P21 >= P12) return;
3980 if(P22 <= P11) return;
3981
3982 Standard_Real pmin, pmax;
3983 pmin = Max(P11, P21);
3984 pmax = Min(P12, P22);
3985
3986 if(pmax - pmin <= TolTang) return;
3987
3988 Handle(Geom_Line) aGLin = new Geom_Line(aLin);
3989
3990 IntTools_Curve aCurve;
3991 Handle(Geom_TrimmedCurve) aGTLin = new Geom_TrimmedCurve(aGLin, pmin, pmax);
3992
3993 aCurve.SetCurve(aGTLin);
3994
3995 if(theApprox1) {
3996 Handle(Geom2d_Line) C2d = new Geom2d_Line(aLin2d1);
3997 aCurve.SetFirstCurve2d(new Geom2d_TrimmedCurve(C2d, pmin, pmax));
3998 }
3999 else {
4000 Handle(Geom2d_Curve) H1;
4001 aCurve.SetFirstCurve2d(H1);
4002 }
4003 if(theApprox2) {
4004 Handle(Geom2d_Line) C2d = new Geom2d_Line(aLin2d2);
4005 aCurve.SetSecondCurve2d(new Geom2d_TrimmedCurve(C2d, pmin, pmax));
4006 }
4007 else {
4008 Handle(Geom2d_Curve) H1;
4009 aCurve.SetFirstCurve2d(H1);
4010 }
4011
4012 theSeqOfCurve.Append(aCurve);
4013
4014}
4015
4016//=======================================================================
4017//function : ClassifyLin2d
4018//purpose :
4019//=======================================================================
4020static inline Standard_Boolean INTER(const Standard_Real d1,
4021 const Standard_Real d2,
4022 const Standard_Real tol)
4023{
4024 return (d1 > tol && d2 < -tol) ||
4025 (d1 < -tol && d2 > tol) ||
4026 ((d1 <= tol && d1 >= -tol) && (d2 > tol || d2 < -tol)) ||
4027 ((d2 <= tol && d2 >= -tol) && (d1 > tol || d1 < -tol));
4028}
4029static inline Standard_Boolean COINC(const Standard_Real d1,
4030 const Standard_Real d2,
4031 const Standard_Real tol)
4032{
4033 return (d1 <= tol && d1 >= -tol) && (d2 <= tol && d2 >= -tol);
4034}
4035Standard_Boolean ClassifyLin2d(const Handle(GeomAdaptor_HSurface)& theS,
4036 const gp_Lin2d& theLin2d,
4037 const Standard_Real theTol,
4038 Standard_Real& theP1,
4039 Standard_Real& theP2)
4040
4041{
4042 Standard_Real xmin, xmax, ymin, ymax, d1, d2, A, B, C;
4043 Standard_Real par[2];
4044 Standard_Integer nbi = 0;
4045
4046 xmin = theS->Surface().FirstUParameter();
4047 xmax = theS->Surface().LastUParameter();
4048 ymin = theS->Surface().FirstVParameter();
4049 ymax = theS->Surface().LastVParameter();
4050
4051 theLin2d.Coefficients(A, B, C);
4052
4053 //xmin, ymin <-> xmin, ymax
4054 d1 = A*xmin + B*ymin + C;
4055 d2 = A*xmin + B*ymax + C;
4056
4057 if(INTER(d1, d2, theTol)) {
4058 //Intersection with boundary
4059 Standard_Real y = -(C + A*xmin)/B;
4060 par[nbi] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmin, y));
4061 nbi++;
4062 }
4063 else if (COINC(d1, d2, theTol)) {
4064 //Coincidence with boundary
4065 par[0] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmin, ymin));
4066 par[1] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmin, ymax));
4067 nbi = 2;
4068 }
4069
4070 if(nbi == 2) {
4071
4072 if(fabs(par[0]-par[1]) > theTol) {
4073 theP1 = Min(par[0], par[1]);
4074 theP2 = Max(par[0], par[1]);
4075 return Standard_True;
4076 }
4077 else return Standard_False;
4078
4079 }
4080
4081 //xmin, ymax <-> xmax, ymax
4082 d1 = d2;
4083 d2 = A*xmax + B*ymax + C;
4084
4085 if(d1 > theTol || d1 < -theTol) {//to avoid checking of
4086 //coincidence with the same point
4087 if(INTER(d1, d2, theTol)) {
4088 Standard_Real x = -(C + B*ymax)/A;
4089 par[nbi] = ElCLib::Parameter(theLin2d, gp_Pnt2d(x, ymax));
4090 nbi++;
4091 }
4092 else if (COINC(d1, d2, theTol)) {
4093 par[0] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmin, ymax));
4094 par[1] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmax, ymax));
4095 nbi = 2;
4096 }
4097 }
4098
4099 if(nbi == 2) {
4100
4101 if(fabs(par[0]-par[1]) > theTol) {
4102 theP1 = Min(par[0], par[1]);
4103 theP2 = Max(par[0], par[1]);
4104 return Standard_True;
4105 }
4106 else return Standard_False;
4107
4108 }
4109
4110 //xmax, ymax <-> xmax, ymin
4111 d1 = d2;
4112 d2 = A*xmax + B*ymin + C;
4113
4114 if(d1 > theTol || d1 < -theTol) {
4115 if(INTER(d1, d2, theTol)) {
4116 Standard_Real y = -(C + A*xmax)/B;
4117 par[nbi] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmax, y));
4118 nbi++;
4119 }
4120 else if (COINC(d1, d2, theTol)) {
4121 par[0] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmax, ymax));
4122 par[1] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmax, ymin));
4123 nbi = 2;
4124 }
4125 }
4126
4127 if(nbi == 2) {
4128 if(fabs(par[0]-par[1]) > theTol) {
4129 theP1 = Min(par[0], par[1]);
4130 theP2 = Max(par[0], par[1]);
4131 return Standard_True;
4132 }
4133 else return Standard_False;
4134 }
4135
4136 //xmax, ymin <-> xmin, ymin
4137 d1 = d2;
4138 d2 = A*xmin + B*ymin + C;
4139
4140 if(d1 > theTol || d1 < -theTol) {
4141 if(INTER(d1, d2, theTol)) {
4142 Standard_Real x = -(C + B*ymin)/A;
4143 par[nbi] = ElCLib::Parameter(theLin2d, gp_Pnt2d(x, ymin));
4144 nbi++;
4145 }
4146 else if (COINC(d1, d2, theTol)) {
4147 par[0] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmax, ymin));
4148 par[1] = ElCLib::Parameter(theLin2d, gp_Pnt2d(xmin, ymin));
4149 nbi = 2;
4150 }
4151 }
4152
4153 if(nbi == 2) {
4154 if(fabs(par[0]-par[1]) > theTol) {
4155 theP1 = Min(par[0], par[1]);
4156 theP2 = Max(par[0], par[1]);
4157 return Standard_True;
4158 }
4159 else return Standard_False;
4160 }
4161
4162 return Standard_False;
4163
4164}
4165//
4166//modified by NIZNHY-PKV Thu Sep 23 08:37:32 2010f
4167//=======================================================================
4168//function : ApproxParameters
4169//purpose :
4170//=======================================================================
4171void ApproxParameters(const Handle(GeomAdaptor_HSurface)& aHS1,
4172 const Handle(GeomAdaptor_HSurface)& aHS2,
4173 Standard_Integer& iDegMin,
4174 Standard_Integer& iDegMax,
4175 Standard_Integer& iNbIterMax,
4176 Standard_Boolean& anWithPC
4177 )
4178{
4179 GeomAbs_SurfaceType aTS1, aTS2;
4180 //
4181 iDegMin=4;
4182 iDegMax=8;
4183 iNbIterMax=0;
4184 //
4185 aTS1=aHS1->Surface().GetType();
4186 aTS2=aHS2->Surface().GetType();
4187 //
4188 // Cylinder/Torus
4189 if ((aTS1==GeomAbs_Cylinder && aTS2==GeomAbs_Torus) ||
4190 (aTS2==GeomAbs_Cylinder && aTS1==GeomAbs_Torus)) {
4191 Standard_Real aRC, aRT, dR, aPC, aDPC, aScPr;
4192 gp_Cylinder aCylinder;
4193 gp_Torus aTorus;
4194 //
4195 aPC=Precision::Confusion();
4196 //
4197 aCylinder=(aTS1==GeomAbs_Cylinder)?
4198 aHS1->Surface().Cylinder() :
4199 aHS2->Surface().Cylinder();
4200 aTorus=(aTS1==GeomAbs_Torus)?
4201 aHS1->Surface().Torus() :
4202 aHS2->Surface().Torus();
4203 //
4204 aRC=aCylinder.Radius();
4205 aRT=aTorus.MinorRadius();
4206 dR=aRC-aRT;
4207 if (dR<0.) {
4208 dR=-dR;
4209 }
4210 //
4211 if (dR<aPC) {
4212 const gp_Ax3& aPosT=aTorus.Position();
4213 const gp_Dir& aDirT=aPosT.Direction();
4214 //
4215 const gp_Ax1& aAxisC=aCylinder.Axis();
4216 const gp_Dir& aDirC=aAxisC.Direction();
4217 //
4218 aScPr=aDirT*aDirC;
4219 if (aScPr<0.){
4220 aScPr=-aScPr;
4221 }
4222 //
4223 if (aScPr<aPC) {
4224 gp_Pln aPlnT(aPosT);
4225 const gp_Pnt& aLocC=aCylinder.Location();
4226
4227 aDPC=aPlnT.SquareDistance(aLocC);
4228 if (aDPC<2.5e-9) {
4229 iDegMax=6;
4230 anWithPC=Standard_False;
4231 iNbIterMax=10;
4232 }
4233 }
4234 }
4235 }
4236}
4237//modified by NIZNHY-PKV Thu Sep 23 08:37:39 2010t
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