1 // Created on: 1996-07-12
2 // Created by: Stagiaire Mary FABIEN
3 // Copyright (c) 1996-1999 Matra Datavision
4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
6 // This file is part of Open CASCADE Technology software library.
8 // This library is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU Lesser General Public License version 2.1 as published
10 // by the Free Software Foundation, with special exception defined in the file
11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 // distribution for complete text of the license and disclaimer of any warranty.
14 // Alternatively, this file may be used under the terms of Open CASCADE
15 // commercial license or contractual agreement.
18 #include <Approx_SameParameter.hxx>
19 #include <BRep_GCurve.hxx>
20 #include <BRep_ListIteratorOfListOfCurveRepresentation.hxx>
21 #include <BRep_TEdge.hxx>
22 #include <BRep_Tool.hxx>
23 #include <BRepTools.hxx>
24 #include <BRepTools_NurbsConvertModification.hxx>
25 #include <BSplCLib.hxx>
27 #include <Extrema_LocateExtPC.hxx>
28 #include <Geom2d_BezierCurve.hxx>
29 #include <Geom2d_BSplineCurve.hxx>
30 #include <Geom2d_Curve.hxx>
31 #include <Geom2d_TrimmedCurve.hxx>
32 #include <Geom2dAdaptor_Curve.hxx>
33 #include <Geom2dAdaptor_HCurve.hxx>
34 #include <Geom2dConvert.hxx>
35 #include <Geom_BezierCurve.hxx>
36 #include <Geom_BezierSurface.hxx>
37 #include <Geom_BSplineCurve.hxx>
38 #include <Geom_BSplineSurface.hxx>
39 #include <Geom_Circle.hxx>
40 #include <Geom_Curve.hxx>
41 #include <Geom_CylindricalSurface.hxx>
42 #include <Geom_Ellipse.hxx>
43 #include <Geom_Line.hxx>
44 #include <Geom_Plane.hxx>
45 #include <Geom_RectangularTrimmedSurface.hxx>
46 #include <Geom_Surface.hxx>
47 #include <Geom_TrimmedCurve.hxx>
48 #include <GeomAdaptor_Curve.hxx>
49 #include <GeomAdaptor_HCurve.hxx>
50 #include <GeomAdaptor_HSurface.hxx>
51 #include <GeomAdaptor_Surface.hxx>
52 #include <GeomConvert.hxx>
53 #include <gp_GTrsf2d.hxx>
55 #include <gp_TrsfForm.hxx>
56 #include <ProjLib_ComputeApprox.hxx>
57 #include <ProjLib_ComputeApproxOnPolarSurface.hxx>
58 #include <Standard_NoSuchObject.hxx>
59 #include <Standard_Type.hxx>
60 #include <TColStd_Array1OfReal.hxx>
61 #include <TColStd_ListIteratorOfListOfTransient.hxx>
63 #include <TopLoc_Location.hxx>
65 #include <TopoDS_Edge.hxx>
66 #include <TopoDS_Face.hxx>
67 #include <TopoDS_Vertex.hxx>
68 #include <TopTools_ListIteratorOfListOfShape.hxx>
69 #include <BRep_Builder.hxx>
70 IMPLEMENT_STANDARD_RTTIEXT(BRepTools_NurbsConvertModification,BRepTools_Modification)
73 static void GeomLib_ChangeUBounds(Handle(Geom_BSplineSurface)& aSurface,
74 const Standard_Real newU1,
75 const Standard_Real newU2)
77 TColStd_Array1OfReal knots(1,aSurface->NbUKnots()) ;
78 aSurface->UKnots(knots) ;
79 BSplCLib::Reparametrize(newU1,
82 aSurface->SetUKnots(knots) ;
84 static void GeomLib_ChangeVBounds(Handle(Geom_BSplineSurface)& aSurface,
85 const Standard_Real newV1,
86 const Standard_Real newV2)
88 TColStd_Array1OfReal knots(1,aSurface->NbVKnots()) ;
89 aSurface->VKnots(knots) ;
90 BSplCLib::Reparametrize(newV1,
93 aSurface->SetVKnots(knots) ;
96 //=======================================================================
97 //function : BRepTools_NurbsConvertModification
99 //=======================================================================
101 BRepTools_NurbsConvertModification::BRepTools_NurbsConvertModification()
107 //=======================================================================
108 //function : NewSurface
110 //=======================================================================
112 Standard_Boolean BRepTools_NurbsConvertModification::NewSurface
113 (const TopoDS_Face& F,
114 Handle(Geom_Surface)& S,
117 Standard_Boolean& RevWires,
118 Standard_Boolean& RevFace)
120 Standard_Real U1, U2, curvU1, curvU2, surfU1, surfU2, UTol;
121 Standard_Real V1, V2, curvV1, curvV2, surfV1, surfV2, VTol;
122 RevWires = Standard_False;
123 RevFace = Standard_False;
124 Handle(Geom_Surface) SS = BRep_Tool::Surface(F,L);
125 Handle(Standard_Type) TheTypeSS = SS->DynamicType();
126 if ((TheTypeSS == STANDARD_TYPE(Geom_BSplineSurface)) ||
127 (TheTypeSS == STANDARD_TYPE(Geom_BezierSurface))) {
128 return Standard_False;
131 BRepTools::UVBounds(F,curvU1,curvU2,curvV1,curvV2);
132 Tol = BRep_Tool::Tolerance(F);
133 Standard_Real TolPar = 0.1*Tol;
134 Standard_Boolean IsUp = S->IsUPeriodic(), IsVp = S->IsVPeriodic();
136 U1 = curvU1; U2 = curvU2;
137 V1 = curvV1; V2 = curvV2;
138 SS->Bounds(surfU1,surfU2,surfV1,surfV2);
140 if (Abs(U1 - surfU1) <= TolPar)
142 if (Abs(U2 - surfU2) <= TolPar)
144 if (Abs(V1 - surfV1) <= TolPar)
146 if (Abs(V2 - surfV2) <= TolPar)
150 U1 = Max(surfU1,curvU1);
151 U2 = Min(surfU2,curvU2);
154 V1 = Max(surfV1,curvV1);
155 V2 = Min(surfV2,curvV2);
161 Standard_Real Up = S->UPeriod();
167 Standard_Real Vp = S->VPeriod();
174 Standard_Real dU = Abs(U2 - U1), dV = Abs(V2 - V1);
175 Standard_Real Up = S->UPeriod(), Vp = S->VPeriod();
176 if(Abs(dU - Up) <= TolPar && U2 <= Up) {
177 if(Abs(dV - Vp) <= TolPar && V2 <= Vp) { }
179 SS = new Geom_RectangularTrimmedSurface(S, V1+1e-9, V2-1e-9, Standard_False);
183 if(Abs(dV - Vp) <= TolPar && V2 <= Vp)
184 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, Standard_True);
186 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
191 Standard_Real dU = Abs(U2 - U1);
192 Standard_Real Up = S->UPeriod();
193 if(Abs(dU - Up) <= TolPar && U2 <= Up)
194 SS = new Geom_RectangularTrimmedSurface(S, V1+1e-9, V2-1e-9, Standard_False);
196 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
200 Standard_Real dV = Abs(V2 - V1);
201 Standard_Real Vp = S->VPeriod();
202 if(Abs(dV - Vp) <= TolPar && V2 <= Vp)
203 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, Standard_True);
205 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
209 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
213 if (Abs(surfU1-U1) > Tol || Abs(surfU2-U2) > Tol ||
214 Abs(surfV1-V1) > Tol || Abs(surfV2-V2) > Tol)
215 SS = new Geom_RectangularTrimmedSurface(S, U1, U2, V1, V2);
216 SS->Bounds(surfU1,surfU2,surfV1,surfV2);
218 S = GeomConvert::SurfaceToBSplineSurface(SS);
219 Handle(Geom_BSplineSurface) BS = Handle(Geom_BSplineSurface)::DownCast(S) ;
220 BS->Resolution(Tol, UTol, VTol) ;
223 // on recadre les bornes de S sinon les anciennes PCurves sont aux fraises
226 if (Abs(curvU1-surfU1) > UTol && !BS->IsUPeriodic()) {
227 GeomLib_ChangeUBounds(BS, U1,U2) ;
229 if (Abs(curvV1-surfV1) > VTol && !BS->IsVPeriodic()) {
230 GeomLib_ChangeVBounds(BS, V1, V2) ;
233 return Standard_True;
236 static Standard_Boolean IsConvert(const TopoDS_Edge& E)
238 Standard_Boolean isConvert = Standard_False;
239 Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape());
240 // iterate on pcurves
241 BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves());
242 for ( ; itcr.More() && !isConvert; itcr.Next() ) {
243 Handle(BRep_GCurve) GC = Handle(BRep_GCurve)::DownCast(itcr.Value());
244 if ( GC.IsNull() || ! GC->IsCurveOnSurface() ) continue;
245 Handle(Geom_Surface) aSurface = GC->Surface();
246 Handle(Geom2d_Curve) aCurve2d = GC->PCurve();
247 isConvert =((!aSurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface)) &&
248 !aSurface->IsKind(STANDARD_TYPE(Geom_BezierSurface))) ||
249 (!aCurve2d->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve)) &&
250 !aCurve2d->IsKind(STANDARD_TYPE(Geom2d_BezierCurve))));
257 //=======================================================================
258 //function : NewCurve
260 //=======================================================================
262 Standard_Boolean BRepTools_NurbsConvertModification::NewCurve
263 (const TopoDS_Edge& E,
264 Handle(Geom_Curve)& C,
269 Tol = BRep_Tool::Tolerance(E);
270 if(BRep_Tool::Degenerated(E)) {
273 return Standard_True;
277 Handle(Geom_Curve) Caux = BRep_Tool::Curve(E, L, f, l);
279 if ( Caux.IsNull()) {
281 return Standard_False;
283 Handle(Standard_Type) TheType = Caux->DynamicType();
284 if ((TheType == STANDARD_TYPE(Geom_BSplineCurve)) ||
285 (TheType == STANDARD_TYPE(Geom_BezierCurve))) {
287 C = Handle(Geom_Curve)::DownCast(Caux->Copy());
288 return Standard_True;
290 return Standard_False;
295 Standard_Real TolPar = Tol *.1;
297 if(C->IsPeriodic()) {
298 Standard_Real p = C->Period();
299 Standard_Real d = Abs(l - f);
300 if(Abs(d - p) <= TolPar && l <= p) {}
302 C = new Geom_TrimmedCurve(C, f, l);
305 C = new Geom_TrimmedCurve(C, f, l);
307 //modif WOK++ portage hp (fbi du 14/03/97)
309 // gp_Trsf trsf = L.Transformation();
311 // C = GeomConvert::CurveToBSplineCurve(C,Convert_QuasiAngular);
313 C = GeomConvert::CurveToBSplineCurve(C);
315 Standard_Real fnew = C->FirstParameter(), lnew = C->LastParameter(), UTol;
317 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(C) ;
319 if(!BC->IsPeriodic()) {
320 BC->Resolution(Tol, UTol) ;
321 if(Abs(f - fnew) > UTol || Abs(l - lnew) > UTol) {
322 TColStd_Array1OfReal knots(1,BC->NbKnots()) ;
324 BSplCLib::Reparametrize(f, l, knots) ;
325 BC->SetKnots(knots) ;
329 if(!myMap.Contains(Caux)) {
332 return Standard_True ;
335 //=======================================================================
336 //function : NewPoint
338 //=======================================================================
340 Standard_Boolean BRepTools_NurbsConvertModification::NewPoint
341 (const TopoDS_Vertex&, gp_Pnt&, Standard_Real& )
343 return Standard_False;
347 //=======================================================================
348 //function : NewCurve2d
350 //=======================================================================
352 Standard_Boolean BRepTools_NurbsConvertModification::NewCurve2d
353 (const TopoDS_Edge& E,
354 const TopoDS_Face& F,
355 const TopoDS_Edge& newE,
356 const TopoDS_Face& newF,
357 Handle(Geom2d_Curve)& Curve2d,
361 Tol = BRep_Tool::Tolerance(E);
362 Standard_Real f2d,l2d;
363 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E,F,f2d,l2d);
364 Standard_Real f3d,l3d;
366 Handle(Geom_Curve) C3d = BRep_Tool::Curve(E, Loc, f3d,l3d);
367 Standard_Boolean isConvert2d = ((!C3d.IsNull() && !C3d->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) &&
368 !C3d->IsKind(STANDARD_TYPE(Geom_BezierCurve))) ||
371 if(BRep_Tool::Degenerated(E)) {
373 if(!C2d->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)))
375 Handle(Geom2d_TrimmedCurve) aTrimC = new Geom2d_TrimmedCurve(C2d,f2d,l2d);
378 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
379 return Standard_True;
381 if(!BRepTools::IsReallyClosed(E,F)) {
382 Handle(Standard_Type) TheTypeC2d = C2d->DynamicType();
384 if(TheTypeC2d == STANDARD_TYPE(Geom2d_TrimmedCurve)) {
385 Handle(Geom2d_TrimmedCurve) TC = Handle(Geom2d_TrimmedCurve)::DownCast(C2d);
386 C2d = TC->BasisCurve();
389 Standard_Real fc = C2d->FirstParameter(), lc = C2d->LastParameter();
391 if(!C2d->IsPeriodic()) {
392 if(fc - f2d > Precision::PConfusion()) f2d = fc;
393 if(l2d - lc > Precision::PConfusion()) l2d = lc;
396 C2d = new Geom2d_TrimmedCurve(C2d, f2d, l2d);
398 Geom2dAdaptor_Curve G2dAC(C2d, f2d, l2d);
399 Handle(Geom2dAdaptor_HCurve) G2dAHC = new Geom2dAdaptor_HCurve(G2dAC);
402 C3d = BRep_Tool::Curve(newE, f3d, l3d);
405 C3d = BRep_Tool::Curve(E,f3d,l3d);
407 GeomAdaptor_Curve G3dAC(C3d, f3d, l3d);
408 Handle(GeomAdaptor_HCurve) G3dAHC = new GeomAdaptor_HCurve(G3dAC);
410 Standard_Real Uinf, Usup, Vinf, Vsup, u = 0, v = 0;
411 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
412 Handle(Standard_Type) myT = S->DynamicType();
413 if(myT != STANDARD_TYPE(Geom_Plane)) {
415 Handle(Standard_Type) st = C2d->DynamicType();
416 if ((st == STANDARD_TYPE(Geom2d_BSplineCurve)) ||
417 (st == STANDARD_TYPE(Geom2d_BezierCurve))) {
419 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
420 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
424 myUpdatedEdges.Append(newE);
426 return Standard_True;
428 return Standard_False;
432 S = BRep_Tool::Surface(newF);
434 S->Bounds(Uinf, Usup, Vinf, Vsup);
435 //Uinf -= 1e-9; Usup += 1e-9; Vinf -= 1e-9; Vsup += 1e-9;
436 u = (Usup - Uinf)*0.1;
437 v = (Vsup - Vinf)*0.1;
438 if(S->IsUPeriodic()) {
439 Standard_Real uperiod = S->UPeriod();
440 if(uperiod < (Usup+2*u-Uinf)) {
441 if(uperiod <= (Usup-Uinf)) {
445 u = (uperiod-(Usup-Uinf))*0.5;
449 if(S->IsVPeriodic()) {
450 Standard_Real vperiod = S->VPeriod();
451 if(vperiod < (Vsup+2*v-Vinf)) {
452 if(vperiod <= (Vsup-Vinf)) {
456 v = (vperiod-(Vsup-Vinf))*0.5;
462 S = BRep_Tool::Surface(F);// Si S est un plan, pas de changement de parametrisation
463 GeomAdaptor_Surface GAS(S);
464 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
465 ProjLib_ComputeApprox ProjOnCurve(G3dAHC,GAHS,Tol);
466 if(ProjOnCurve.BSpline().IsNull()) {
467 Curve2d = Geom2dConvert::CurveToBSplineCurve(ProjOnCurve.Bezier());
468 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
472 myUpdatedEdges.Append(newE);
474 return Standard_True;
476 Curve2d = ProjOnCurve.BSpline();
477 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
481 myUpdatedEdges.Append(newE);
483 return Standard_True;
485 GeomAdaptor_Surface GAS(S,Uinf-u,Usup+u,Vinf-v,Vsup+v);
487 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
489 ProjLib_ComputeApproxOnPolarSurface ProjOnCurve(G2dAHC,G3dAHC,GAHS,Tol);
491 if(ProjOnCurve.IsDone()) {
492 Curve2d = ProjOnCurve.BSpline();
493 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
497 myUpdatedEdges.Append(newE);
499 return Standard_True;
502 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
503 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
507 myUpdatedEdges.Append(newE);
509 return Standard_True;
513 TopTools_ListIteratorOfListOfShape itled;
514 TColStd_ListIteratorOfListOfTransient itlcu;
516 for (itled.Initialize(myled), itlcu.Initialize(mylcu);
517 itled.More(); // itlcu.More()
518 itled.Next(),itlcu.Next()) {
519 if (itled.Value().IsSame(E)) {
524 if (!itled.More()) { // on stocke l`edge et la curve2d
525 Handle(Geom2d_Curve) C2dBis;
526 Standard_Real f2dBis,l2dBis;
527 C2d = new Geom2d_TrimmedCurve(C2d, f2d, l2d);
528 Geom2dAdaptor_Curve G2dAC(C2d, f2d, l2d);
529 Handle(Geom2dAdaptor_HCurve) G2dAHC = new Geom2dAdaptor_HCurve(G2dAC);
530 TopoDS_Edge ERevers = E;
532 C2dBis = BRep_Tool::CurveOnSurface(ERevers,F,f2dBis,l2dBis);
533 Handle(Standard_Type) TheTypeC2dBis = C2dBis->DynamicType();
534 C2dBis = new Geom2d_TrimmedCurve(C2dBis,f2dBis, l2dBis);
535 Geom2dAdaptor_Curve G2dACBis(C2dBis, f2dBis, l2dBis);
536 Handle(Geom2dAdaptor_HCurve) G2dAHCBis = new Geom2dAdaptor_HCurve(G2dACBis);
540 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
542 Handle(Geom_Surface) S;
544 S = BRep_Tool::Surface(F);
546 S = BRep_Tool::Surface(newF);
548 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
552 myUpdatedEdges.Append(newE);
554 return Standard_True;
556 return Standard_False;
559 C3d = BRep_Tool::Curve(newE, f3d,l3d);
561 GeomAdaptor_Curve G3dAC(C3d, f3d, l3d);
562 Handle(GeomAdaptor_HCurve) G3dAHC = new GeomAdaptor_HCurve(G3dAC);
564 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
565 Handle(Standard_Type) myT = S->DynamicType();
567 mylcu.Append(C2dBis);
568 Handle(Standard_Type) st = C2d->DynamicType();
569 if ((st == STANDARD_TYPE(Geom2d_BSplineCurve)) ||
570 (st == STANDARD_TYPE(Geom2d_BezierCurve))) {
572 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
573 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
577 myUpdatedEdges.Append(newE);
579 return Standard_True;
581 return Standard_False;
585 S = BRep_Tool::Surface(newF);// S est une BSplineSurface : pas besoin de la trimmed
587 Standard_Real Uinf, Usup, Vinf, Vsup, u = 0, v = 0;
588 S->Bounds(Uinf, Usup, Vinf, Vsup);
589 //Uinf -= 1e-9; Usup += 1e-9; Vinf -= 1e-9; Vsup += 1e-9;
590 u = (Usup - Uinf)*0.1;
591 v = (Vsup - Vinf)*0.1;
592 if(S->IsUPeriodic()) {
593 Standard_Real uperiod = S->UPeriod();
594 if(uperiod < (Usup+2*u-Uinf)) {
595 if(uperiod <= (Usup-Uinf))
598 u = (uperiod-(Usup-Uinf))*0.5;
601 if(S->IsVPeriodic()) {
602 Standard_Real vperiod = S->VPeriod();
603 if(vperiod < (Vsup+2*v-Vinf)) {
604 if(vperiod <= (Vsup-Vinf))
607 v = (vperiod-(Vsup-Vinf))*0.5;
610 GeomAdaptor_Surface GAS(S, Uinf-u,Usup+u,Vinf-v,Vsup+v);
611 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
614 ProjLib_ComputeApproxOnPolarSurface
615 ProjOnCurve(G2dAHC,G2dAHCBis,G3dAHC,GAHS,Tol);
617 if(ProjOnCurve.IsDone()) {
618 Curve2d = ProjOnCurve.BSpline();
619 mylcu.Append(ProjOnCurve.Curve2d());
620 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
624 myUpdatedEdges.Append(newE);
626 return Standard_True;
629 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
630 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
634 myUpdatedEdges.Append(newE);
636 mylcu.Append(C2dBis);
637 return Standard_True;
640 else { // on est au 2ieme tour
641 C2d = Handle(Geom2d_Curve)::DownCast(itlcu.Value());
642 Handle(Standard_Type) st = C2d->DynamicType();
643 if (!(st == STANDARD_TYPE(Geom2d_BSplineCurve)) &&
644 !(st == STANDARD_TYPE(Geom2d_BezierCurve))) {
645 return Standard_False;
647 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
648 return Standard_True;
653 //=======================================================================
654 //function : NewParameter
656 //=======================================================================
658 Standard_Boolean BRepTools_NurbsConvertModification::NewParameter
659 (const TopoDS_Vertex& V,
660 const TopoDS_Edge& E,
664 Tol = BRep_Tool::Tolerance(V);
665 if(BRep_Tool::Degenerated(E))
666 return Standard_False;
667 Standard_Real f, l, param = BRep_Tool::Parameter(V,E);
670 Handle(Geom_Curve) gc = BRep_Tool::Curve(E, L, f, l);
671 if(!myMap.Contains(gc))
672 return Standard_False;
674 Handle(Geom_BSplineCurve) gcc =
675 Handle(Geom_BSplineCurve)::DownCast(myMap.FindFromKey(gc));
677 gcc = Handle(Geom_BSplineCurve)::DownCast(gcc->Transformed(L.Transformation()));
679 GeomAdaptor_Curve ac(gcc);
680 gp_Pnt pnt = BRep_Tool::Pnt(V);
682 Extrema_LocateExtPC proj(pnt, ac, param, f, l, Tol);
684 Standard_Real Dist2Min = proj.SquareDistance();
685 if (Dist2Min < Tol*Tol) {
686 P = proj.Point().Parameter();
687 return Standard_True;
690 return Standard_False;
693 //=======================================================================
694 //function : Continuity
696 //=======================================================================
698 GeomAbs_Shape BRepTools_NurbsConvertModification::Continuity
699 (const TopoDS_Edge& E,
700 const TopoDS_Face& F1,
701 const TopoDS_Face& F2,
706 return BRep_Tool::Continuity(E,F1,F2);
710 //=======================================================================
711 //function : GetUpdatedEdges
713 //=======================================================================
714 const TopTools_ListOfShape&
715 BRepTools_NurbsConvertModification::GetUpdatedEdges() const
717 return myUpdatedEdges;