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 <OSD_Chronometer.hxx>
57 #include <ProjLib_ComputeApprox.hxx>
58 #include <ProjLib_ComputeApproxOnPolarSurface.hxx>
59 #include <Standard_NoSuchObject.hxx>
60 #include <Standard_Type.hxx>
61 #include <TColStd_Array1OfReal.hxx>
62 #include <TColStd_ListIteratorOfListOfTransient.hxx>
64 #include <TopLoc_Location.hxx>
66 #include <TopoDS_Edge.hxx>
67 #include <TopoDS_Face.hxx>
68 #include <TopoDS_Vertex.hxx>
69 #include <TopTools_ListIteratorOfListOfShape.hxx>
70 #include <BRep_Builder.hxx>
71 IMPLEMENT_STANDARD_RTTIEXT(BRepTools_NurbsConvertModification,BRepTools_Modification)
74 static void GeomLib_ChangeUBounds(Handle(Geom_BSplineSurface)& aSurface,
75 const Standard_Real newU1,
76 const Standard_Real newU2)
78 TColStd_Array1OfReal knots(1,aSurface->NbUKnots()) ;
79 aSurface->UKnots(knots) ;
80 BSplCLib::Reparametrize(newU1,
83 aSurface->SetUKnots(knots) ;
85 static void GeomLib_ChangeVBounds(Handle(Geom_BSplineSurface)& aSurface,
86 const Standard_Real newV1,
87 const Standard_Real newV2)
89 TColStd_Array1OfReal knots(1,aSurface->NbVKnots()) ;
90 aSurface->VKnots(knots) ;
91 BSplCLib::Reparametrize(newV1,
94 aSurface->SetVKnots(knots) ;
97 //=======================================================================
98 //function : BRepTools_NurbsConvertModification
100 //=======================================================================
102 BRepTools_NurbsConvertModification::BRepTools_NurbsConvertModification()
108 //=======================================================================
109 //function : NewSurface
111 //=======================================================================
113 Standard_Boolean BRepTools_NurbsConvertModification::NewSurface
114 (const TopoDS_Face& F,
115 Handle(Geom_Surface)& S,
118 Standard_Boolean& RevWires,
119 Standard_Boolean& RevFace)
121 Standard_Real U1, U2, curvU1, curvU2, surfU1, surfU2, UTol;
122 Standard_Real V1, V2, curvV1, curvV2, surfV1, surfV2, VTol;
123 RevWires = Standard_False;
124 RevFace = Standard_False;
125 Handle(Geom_Surface) SS = BRep_Tool::Surface(F,L);
126 Handle(Standard_Type) TheTypeSS = SS->DynamicType();
127 if ((TheTypeSS == STANDARD_TYPE(Geom_BSplineSurface)) ||
128 (TheTypeSS == STANDARD_TYPE(Geom_BezierSurface))) {
129 return Standard_False;
132 BRepTools::UVBounds(F,curvU1,curvU2,curvV1,curvV2);
133 Tol = BRep_Tool::Tolerance(F);
134 Standard_Real TolPar = 0.1*Tol;
135 Standard_Boolean IsUp = S->IsUPeriodic(), IsVp = S->IsVPeriodic();
137 U1 = curvU1; U2 = curvU2;
138 V1 = curvV1; V2 = curvV2;
139 SS->Bounds(surfU1,surfU2,surfV1,surfV2);
141 if (Abs(U1 - surfU1) <= TolPar)
143 if (Abs(U2 - surfU2) <= TolPar)
145 if (Abs(V1 - surfV1) <= TolPar)
147 if (Abs(V2 - surfV2) <= TolPar)
151 U1 = Max(surfU1,curvU1);
152 U2 = Min(surfU2,curvU2);
155 V1 = Max(surfV1,curvV1);
156 V2 = Min(surfV2,curvV2);
162 Standard_Real Up = S->UPeriod();
168 Standard_Real Vp = S->VPeriod();
175 Standard_Real dU = Abs(U2 - U1), dV = Abs(V2 - V1);
176 Standard_Real Up = S->UPeriod(), Vp = S->VPeriod();
177 if(Abs(dU - Up) <= TolPar && U2 <= Up) {
178 if(Abs(dV - Vp) <= TolPar && V2 <= Vp) { }
180 SS = new Geom_RectangularTrimmedSurface(S, V1+1e-9, V2-1e-9, Standard_False);
184 if(Abs(dV - Vp) <= TolPar && V2 <= Vp)
185 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, Standard_True);
187 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
192 Standard_Real dU = Abs(U2 - U1);
193 Standard_Real Up = S->UPeriod();
194 if(Abs(dU - Up) <= TolPar && U2 <= Up)
195 SS = new Geom_RectangularTrimmedSurface(S, V1+1e-9, V2-1e-9, Standard_False);
197 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
201 Standard_Real dV = Abs(V2 - V1);
202 Standard_Real Vp = S->VPeriod();
203 if(Abs(dV - Vp) <= TolPar && V2 <= Vp)
204 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, Standard_True);
206 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
210 SS = new Geom_RectangularTrimmedSurface(S, U1+1e-9, U2-1e-9, V1+1e-9, V2-1e-9);
214 if (Abs(surfU1-U1) > Tol || Abs(surfU2-U2) > Tol ||
215 Abs(surfV1-V1) > Tol || Abs(surfV2-V2) > Tol)
216 SS = new Geom_RectangularTrimmedSurface(S, U1, U2, V1, V2);
217 SS->Bounds(surfU1,surfU2,surfV1,surfV2);
219 S = GeomConvert::SurfaceToBSplineSurface(SS);
220 Handle(Geom_BSplineSurface) BS = Handle(Geom_BSplineSurface)::DownCast(S) ;
221 BS->Resolution(Tol, UTol, VTol) ;
224 // on recadre les bornes de S sinon les anciennes PCurves sont aux fraises
227 if (Abs(curvU1-surfU1) > UTol && !BS->IsUPeriodic()) {
228 GeomLib_ChangeUBounds(BS, U1,U2) ;
230 if (Abs(curvV1-surfV1) > VTol && !BS->IsVPeriodic()) {
231 GeomLib_ChangeVBounds(BS, V1, V2) ;
234 return Standard_True;
237 static Standard_Boolean IsConvert(const TopoDS_Edge& E)
239 Standard_Boolean isConvert = Standard_False;
240 Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape());
241 // iterate on pcurves
242 BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves());
243 for ( ; itcr.More() && !isConvert; itcr.Next() ) {
244 Handle(BRep_GCurve) GC = Handle(BRep_GCurve)::DownCast(itcr.Value());
245 if ( GC.IsNull() || ! GC->IsCurveOnSurface() ) continue;
246 Handle(Geom_Surface) aSurface = GC->Surface();
247 Handle(Geom2d_Curve) aCurve2d = GC->PCurve();
248 isConvert =((!aSurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface)) &&
249 !aSurface->IsKind(STANDARD_TYPE(Geom_BezierSurface))) ||
250 (!aCurve2d->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve)) &&
251 !aCurve2d->IsKind(STANDARD_TYPE(Geom2d_BezierCurve))));
258 //=======================================================================
259 //function : NewCurve
261 //=======================================================================
263 Standard_Boolean BRepTools_NurbsConvertModification::NewCurve
264 (const TopoDS_Edge& E,
265 Handle(Geom_Curve)& C,
270 Tol = BRep_Tool::Tolerance(E);
271 if(BRep_Tool::Degenerated(E)) {
274 return Standard_True;
278 Handle(Geom_Curve) Caux = BRep_Tool::Curve(E, L, f, l);
280 if ( Caux.IsNull()) {
282 return Standard_False;
284 Handle(Standard_Type) TheType = Caux->DynamicType();
285 if ((TheType == STANDARD_TYPE(Geom_BSplineCurve)) ||
286 (TheType == STANDARD_TYPE(Geom_BezierCurve))) {
288 C = Handle(Geom_Curve)::DownCast(Caux->Copy());
289 return Standard_True;
291 return Standard_False;
296 Standard_Real TolPar = Tol *.1;
298 if(C->IsPeriodic()) {
299 Standard_Real p = C->Period();
300 Standard_Real d = Abs(l - f);
301 if(Abs(d - p) <= TolPar && l <= p) {}
303 C = new Geom_TrimmedCurve(C, f, l);
306 C = new Geom_TrimmedCurve(C, f, l);
308 //modif WOK++ portage hp (fbi du 14/03/97)
310 // gp_Trsf trsf = L.Transformation();
312 // C = GeomConvert::CurveToBSplineCurve(C,Convert_QuasiAngular);
314 C = GeomConvert::CurveToBSplineCurve(C);
316 Standard_Real fnew = C->FirstParameter(), lnew = C->LastParameter(), UTol;
318 Handle(Geom_BSplineCurve) BC = Handle(Geom_BSplineCurve)::DownCast(C) ;
320 if(!BC->IsPeriodic()) {
321 BC->Resolution(Tol, UTol) ;
322 if(Abs(f - fnew) > UTol || Abs(l - lnew) > UTol) {
323 TColStd_Array1OfReal knots(1,BC->NbKnots()) ;
325 BSplCLib::Reparametrize(f, l, knots) ;
326 BC->SetKnots(knots) ;
330 if(!myMap.Contains(Caux)) {
333 return Standard_True ;
336 //=======================================================================
337 //function : NewPoint
339 //=======================================================================
341 Standard_Boolean BRepTools_NurbsConvertModification::NewPoint
342 (const TopoDS_Vertex&, gp_Pnt&, Standard_Real& )
344 return Standard_False;
348 //=======================================================================
349 //function : NewCurve2d
351 //=======================================================================
353 Standard_Boolean BRepTools_NurbsConvertModification::NewCurve2d
354 (const TopoDS_Edge& E,
355 const TopoDS_Face& F,
356 const TopoDS_Edge& newE,
357 const TopoDS_Face& newF,
358 Handle(Geom2d_Curve)& Curve2d,
362 Tol = BRep_Tool::Tolerance(E);
363 Standard_Real f2d,l2d;
364 Handle(Geom2d_Curve) C2d = BRep_Tool::CurveOnSurface(E,F,f2d,l2d);
365 Standard_Real f3d,l3d;
367 Handle(Geom_Curve) C3d = BRep_Tool::Curve(E, Loc, f3d,l3d);
368 Standard_Boolean isConvert2d = ((!C3d.IsNull() && !C3d->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) &&
369 !C3d->IsKind(STANDARD_TYPE(Geom_BezierCurve))) ||
372 if(BRep_Tool::Degenerated(E)) {
374 if(!C2d->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve)))
376 Handle(Geom2d_TrimmedCurve) aTrimC = new Geom2d_TrimmedCurve(C2d,f2d,l2d);
379 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
380 return Standard_True;
382 if(!BRepTools::IsReallyClosed(E,F)) {
383 Handle(Standard_Type) TheTypeC2d = C2d->DynamicType();
385 if(TheTypeC2d == STANDARD_TYPE(Geom2d_TrimmedCurve)) {
386 Handle(Geom2d_TrimmedCurve) TC = Handle(Geom2d_TrimmedCurve)::DownCast(C2d);
387 C2d = TC->BasisCurve();
390 Standard_Real fc = C2d->FirstParameter(), lc = C2d->LastParameter();
392 if(!C2d->IsPeriodic()) {
393 if(fc - f2d > Precision::PConfusion()) f2d = fc;
394 if(l2d - lc > Precision::PConfusion()) l2d = lc;
397 C2d = new Geom2d_TrimmedCurve(C2d, f2d, l2d);
399 Geom2dAdaptor_Curve G2dAC(C2d, f2d, l2d);
400 Handle(Geom2dAdaptor_HCurve) G2dAHC = new Geom2dAdaptor_HCurve(G2dAC);
403 C3d = BRep_Tool::Curve(newE, f3d, l3d);
406 C3d = BRep_Tool::Curve(E,f3d,l3d);
408 GeomAdaptor_Curve G3dAC(C3d, f3d, l3d);
409 Handle(GeomAdaptor_HCurve) G3dAHC = new GeomAdaptor_HCurve(G3dAC);
411 Standard_Real Uinf, Usup, Vinf, Vsup, u = 0, v = 0;
412 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
413 Handle(Standard_Type) myT = S->DynamicType();
414 if(myT != STANDARD_TYPE(Geom_Plane)) {
416 Handle(Standard_Type) st = C2d->DynamicType();
417 if ((st == STANDARD_TYPE(Geom2d_BSplineCurve)) ||
418 (st == STANDARD_TYPE(Geom2d_BezierCurve))) {
420 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
421 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
425 myUpdatedEdges.Append(newE);
427 return Standard_True;
429 return Standard_False;
433 S = BRep_Tool::Surface(newF);
435 S->Bounds(Uinf, Usup, Vinf, Vsup);
436 //Uinf -= 1e-9; Usup += 1e-9; Vinf -= 1e-9; Vsup += 1e-9;
437 u = (Usup - Uinf)*0.1;
438 v = (Vsup - Vinf)*0.1;
439 if(S->IsUPeriodic()) {
440 Standard_Real uperiod = S->UPeriod();
441 if(uperiod < (Usup+2*u-Uinf)) {
442 if(uperiod <= (Usup-Uinf)) {
446 u = (uperiod-(Usup-Uinf))*0.5;
450 if(S->IsVPeriodic()) {
451 Standard_Real vperiod = S->VPeriod();
452 if(vperiod < (Vsup+2*v-Vinf)) {
453 if(vperiod <= (Vsup-Vinf)) {
457 v = (vperiod-(Vsup-Vinf))*0.5;
463 S = BRep_Tool::Surface(F);// Si S est un plan, pas de changement de parametrisation
464 GeomAdaptor_Surface GAS(S);
465 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
466 ProjLib_ComputeApprox ProjOnCurve(G3dAHC,GAHS,Tol);
467 if(ProjOnCurve.BSpline().IsNull()) {
468 Curve2d = Geom2dConvert::CurveToBSplineCurve(ProjOnCurve.Bezier());
469 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
473 myUpdatedEdges.Append(newE);
475 return Standard_True;
477 Curve2d = ProjOnCurve.BSpline();
478 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
482 myUpdatedEdges.Append(newE);
484 return Standard_True;
486 GeomAdaptor_Surface GAS(S,Uinf-u,Usup+u,Vinf-v,Vsup+v);
488 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
490 ProjLib_ComputeApproxOnPolarSurface ProjOnCurve(G2dAHC,G3dAHC,GAHS,Tol);
492 if(ProjOnCurve.IsDone()) {
493 Curve2d = ProjOnCurve.BSpline();
494 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
498 myUpdatedEdges.Append(newE);
500 return Standard_True;
503 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
504 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
508 myUpdatedEdges.Append(newE);
510 return Standard_True;
514 TopTools_ListIteratorOfListOfShape itled;
515 TColStd_ListIteratorOfListOfTransient itlcu;
517 for (itled.Initialize(myled), itlcu.Initialize(mylcu);
518 itled.More(); // itlcu.More()
519 itled.Next(),itlcu.Next()) {
520 if (itled.Value().IsSame(E)) {
525 if (!itled.More()) { // on stocke l`edge et la curve2d
526 Handle(Geom2d_Curve) C2dBis;
527 Standard_Real f2dBis,l2dBis;
528 C2d = new Geom2d_TrimmedCurve(C2d, f2d, l2d);
529 Geom2dAdaptor_Curve G2dAC(C2d, f2d, l2d);
530 Handle(Geom2dAdaptor_HCurve) G2dAHC = new Geom2dAdaptor_HCurve(G2dAC);
531 TopoDS_Edge ERevers = E;
533 C2dBis = BRep_Tool::CurveOnSurface(ERevers,F,f2dBis,l2dBis);
534 Handle(Standard_Type) TheTypeC2dBis = C2dBis->DynamicType();
535 C2dBis = new Geom2d_TrimmedCurve(C2dBis,f2dBis, l2dBis);
536 Geom2dAdaptor_Curve G2dACBis(C2dBis, f2dBis, l2dBis);
537 Handle(Geom2dAdaptor_HCurve) G2dAHCBis = new Geom2dAdaptor_HCurve(G2dACBis);
541 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
543 Handle(Geom_Surface) S;
545 S = BRep_Tool::Surface(F);
547 S = BRep_Tool::Surface(newF);
549 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
553 myUpdatedEdges.Append(newE);
555 return Standard_True;
557 return Standard_False;
560 C3d = BRep_Tool::Curve(newE, f3d,l3d);
562 GeomAdaptor_Curve G3dAC(C3d, f3d, l3d);
563 Handle(GeomAdaptor_HCurve) G3dAHC = new GeomAdaptor_HCurve(G3dAC);
565 Handle(Geom_Surface) S = BRep_Tool::Surface(F);
566 Handle(Standard_Type) myT = S->DynamicType();
568 mylcu.Append(C2dBis);
569 Handle(Standard_Type) st = C2d->DynamicType();
570 if ((st == STANDARD_TYPE(Geom2d_BSplineCurve)) ||
571 (st == STANDARD_TYPE(Geom2d_BezierCurve))) {
573 Curve2d = Handle(Geom2d_Curve)::DownCast(C2d->Copy());
574 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
578 myUpdatedEdges.Append(newE);
580 return Standard_True;
582 return Standard_False;
586 S = BRep_Tool::Surface(newF);// S est une BSplineSurface : pas besoin de la trimmed
588 Standard_Real Uinf, Usup, Vinf, Vsup, u = 0, v = 0;
589 S->Bounds(Uinf, Usup, Vinf, Vsup);
590 //Uinf -= 1e-9; Usup += 1e-9; Vinf -= 1e-9; Vsup += 1e-9;
591 u = (Usup - Uinf)*0.1;
592 v = (Vsup - Vinf)*0.1;
593 if(S->IsUPeriodic()) {
594 Standard_Real uperiod = S->UPeriod();
595 if(uperiod < (Usup+2*u-Uinf)) {
596 if(uperiod <= (Usup-Uinf))
599 u = (uperiod-(Usup-Uinf))*0.5;
602 if(S->IsVPeriodic()) {
603 Standard_Real vperiod = S->VPeriod();
604 if(vperiod < (Vsup+2*v-Vinf)) {
605 if(vperiod <= (Vsup-Vinf))
608 v = (vperiod-(Vsup-Vinf))*0.5;
611 GeomAdaptor_Surface GAS(S, Uinf-u,Usup+u,Vinf-v,Vsup+v);
612 Handle(GeomAdaptor_HSurface) GAHS = new GeomAdaptor_HSurface(GAS);
615 ProjLib_ComputeApproxOnPolarSurface
616 ProjOnCurve(G2dAHC,G2dAHCBis,G3dAHC,GAHS,Tol);
618 if(ProjOnCurve.IsDone()) {
619 Curve2d = ProjOnCurve.BSpline();
620 mylcu.Append(ProjOnCurve.Curve2d());
621 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
625 myUpdatedEdges.Append(newE);
627 return Standard_True;
630 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
631 Standard_Real newTol = BRepTools::EvalAndUpdateTol(newE, C3d, Curve2d, S, f3d, l3d);
635 myUpdatedEdges.Append(newE);
637 mylcu.Append(C2dBis);
638 return Standard_True;
641 else { // on est au 2ieme tour
642 C2d = Handle(Geom2d_Curve)::DownCast(itlcu.Value());
643 Handle(Standard_Type) st = C2d->DynamicType();
644 if (!(st == STANDARD_TYPE(Geom2d_BSplineCurve)) &&
645 !(st == STANDARD_TYPE(Geom2d_BezierCurve))) {
646 return Standard_False;
648 Curve2d = Geom2dConvert::CurveToBSplineCurve(C2d);
649 return Standard_True;
654 //=======================================================================
655 //function : NewParameter
657 //=======================================================================
659 Standard_Boolean BRepTools_NurbsConvertModification::NewParameter
660 (const TopoDS_Vertex& V,
661 const TopoDS_Edge& E,
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;