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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
1428 lines
57 KiB
C++
1428 lines
57 KiB
C++
// Created on: 1999-06-18
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// Created by: Galina Koulikova
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// Copyright (c) 1999-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <ShapeAnalysis_Curve.hxx>
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#include <ShapeCustom_BSplineRestriction.ixx>
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#include <Geom_BSplineSurface.hxx>
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#include <GeomConvert_ApproxSurface.hxx>
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#include <Geom2dConvert_ApproxCurve.hxx>
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#include <GeomConvert_ApproxCurve.hxx>
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#include <BRepTools_Modifier.hxx>
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#include <BRep_Tool.hxx>
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#include <Geom_TrimmedCurve.hxx>
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#include <Geom_OffsetCurve.hxx>
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#include <Geom2d_OffsetCurve.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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#include <Geom_SurfaceOfRevolution.hxx>
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#include <Geom_SurfaceOfLinearExtrusion.hxx>
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#include <Geom_RectangularTrimmedSurface.hxx>
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#include <Geom_OffsetSurface.hxx>
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#include <BRep_Builder.hxx>
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#include <gp_Ax1.hxx>
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#include <TopoDS.hxx>
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#include <Standard_Failure.hxx>
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#include <Standard_ErrorHandler.hxx>
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#include <Geom_BezierSurface.hxx>
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#include <Geom_BezierCurve.hxx>
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#include <Geom2d_BezierCurve.hxx>
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#include <Geom2d_BSplineCurve.hxx>
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#include <Geom_BSplineCurve.hxx>
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#include <BRep_TEdge.hxx>
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#include <BRep_ListIteratorOfListOfCurveRepresentation.hxx>
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#include <BRep_ListIteratorOfListOfCurveRepresentation.hxx>
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#include <BRep_ListIteratorOfListOfCurveRepresentation.hxx>
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#include <BRep_GCurve.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <Precision.hxx>
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#include <TColgp_HArray1OfPnt.hxx>
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#include <TColgp_HArray1OfPnt2d.hxx>
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#include <GeomAdaptor_Surface.hxx>
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#include <BRepTools.hxx>
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#include <TColgp_Array1OfPnt.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#include <TColStd_Array1OfInteger.hxx>
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#include <TColgp_Array2OfPnt.hxx>
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#include <TColStd_Array2OfReal.hxx>
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#include <ShapeConstruct.hxx>
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#include <Geom_Plane.hxx>
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#include <Geom2d_Line.hxx>
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#include <Geom2d_Conic.hxx>
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#include <Geom2dConvert.hxx>
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#include <Geom_Line.hxx>
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#include <Geom_Conic.hxx>
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#include <GeomConvert.hxx>
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#include <Geom_ConicalSurface.hxx>
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#include <Geom_SphericalSurface.hxx>
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#include <Geom_CylindricalSurface.hxx>
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#include <Geom_ToroidalSurface.hxx>
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#include <ShapeAnalysis.hxx>
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static GeomAbs_Shape IntegerToGeomAbsShape(const Standard_Integer i)
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{
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GeomAbs_Shape result = GeomAbs_C0;
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switch (i) {
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case 0: result = GeomAbs_C0; break;
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case 1: result = GeomAbs_C1; break;
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case 2: result = GeomAbs_C2; break;
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case 3: result = GeomAbs_C3; break;
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default : result = GeomAbs_CN; break;
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}
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return result;
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}
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static Standard_Integer ContToInteger( const GeomAbs_Shape Cont)
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{
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Standard_Integer result =0;
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switch(Cont) {
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case GeomAbs_C0:
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case GeomAbs_G1: result = 0; break;
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case GeomAbs_C1:
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case GeomAbs_G2: result = 1; break;
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case GeomAbs_C2: result = 2; break;
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case GeomAbs_C3: result = 3; break;
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default : result = 4; break;
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}
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return result;
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}
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static Standard_Boolean IsConvertCurve3d(const Handle(Geom_Curve)& aCurve,
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Standard_Integer Degree,
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Standard_Integer NbSeg,
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Standard_Boolean myRational,
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const Handle(ShapeCustom_RestrictionParameters)& aParameters)
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{
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if(aCurve.IsNull()) return Standard_False;
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if(aParameters->ConvertCurve3d()) return Standard_True;
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if (aCurve->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
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Handle(Geom_TrimmedCurve) tmp = Handle(Geom_TrimmedCurve)::DownCast (aCurve);
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Handle(Geom_Curve) BasCurve = tmp->BasisCurve();
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return IsConvertCurve3d(BasCurve,Degree,NbSeg,myRational,aParameters);
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}
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if (aCurve->IsKind(STANDARD_TYPE(Geom_OffsetCurve))) {
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if(aParameters->ConvertOffsetCurv3d()) return Standard_True;
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Handle(Geom_OffsetCurve) tmp = Handle(Geom_OffsetCurve)::DownCast (aCurve);
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Handle(Geom_Curve) BasCurve = tmp->BasisCurve();
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return IsConvertCurve3d(BasCurve,Degree,NbSeg,myRational,aParameters);
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}
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if (aCurve->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
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Handle(Geom_BSplineCurve) BsC = Handle(Geom_BSplineCurve)::DownCast(aCurve);
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if( BsC->Degree() > Degree || ((BsC->NbKnots() - 1) >= NbSeg))
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return Standard_True;
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if(myRational && BsC->IsRational())
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return Standard_True;
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else return Standard_False;
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}
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if (aCurve->IsKind(STANDARD_TYPE(Geom_BezierCurve)) &&
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(Handle(Geom_BezierCurve)::DownCast(aCurve)->Degree() > Degree ||
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(myRational && Handle(Geom_BezierCurve)::DownCast(aCurve)->IsRational())))
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return Standard_True;
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// else return Standard_False;
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return Standard_False;
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}
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static Standard_Boolean IsConvertSurface(const Handle(Geom_Surface)& aSurface,
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const Standard_Integer Degree,
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const Standard_Integer NbSeg,
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const Standard_Boolean myRational,
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const Handle(ShapeCustom_RestrictionParameters)& aParameters)
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{
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if (aSurface.IsNull()) return Standard_False;
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if (aSurface->IsKind(STANDARD_TYPE(Geom_Plane))) {
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return aParameters->ConvertPlane();
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}
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else if(aSurface->IsKind(STANDARD_TYPE(Geom_ConicalSurface)))
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return aParameters->ConvertConicalSurf();
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else if(aSurface->IsKind(STANDARD_TYPE(Geom_SphericalSurface)))
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return aParameters->ConvertSphericalSurf();
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else if(aSurface->IsKind(STANDARD_TYPE(Geom_CylindricalSurface)))
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return aParameters->ConvertCylindricalSurf();
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else if(aSurface->IsKind(STANDARD_TYPE(Geom_ToroidalSurface)))
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return aParameters->ConvertToroidalSurf();
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//else if(aSurface->IsKind(STANDARD_TYPE(Geom_ElementarySurface))) {
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// return aParameters->ConvertElementarySurf();
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// }
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if (aSurface->IsKind(STANDARD_TYPE(Geom_SweptSurface))) {
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if(aSurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution)) && aParameters->ConvertRevolutionSurf())
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return Standard_True;
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if(aSurface->IsKind(STANDARD_TYPE(Geom_SurfaceOfLinearExtrusion)) && aParameters->ConvertExtrusionSurf())
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return Standard_True;
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Handle(Geom_SweptSurface) aSurf = Handle(Geom_SweptSurface)::DownCast(aSurface);
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Handle(Geom_Curve) BasCurve = aSurf->BasisCurve();
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return IsConvertCurve3d(BasCurve,Degree,NbSeg,myRational,aParameters);
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}
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if (aSurface->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
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Handle(Geom_RectangularTrimmedSurface) aSurf = Handle(Geom_RectangularTrimmedSurface)::DownCast(aSurface);
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Handle(Geom_Surface) theSurf = aSurf->BasisSurface();
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return IsConvertSurface(theSurf,Degree,NbSeg,myRational,aParameters);
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}
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if(aSurface->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) {
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if(aParameters->ConvertOffsetSurf()) return Standard_True;
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Handle(Geom_OffsetSurface) aSurf = Handle(Geom_OffsetSurface)::DownCast(aSurface);
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Handle(Geom_Surface) theSurf = aSurf->BasisSurface();
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return IsConvertSurface(theSurf,Degree,NbSeg,myRational,aParameters);
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}
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if (aSurface->IsKind(STANDARD_TYPE(Geom_BSplineSurface))) {
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Handle(Geom_BSplineSurface) theSurf = Handle(Geom_BSplineSurface)::DownCast(aSurface);
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if(theSurf->UDegree() > Degree || theSurf->VDegree() > Degree)
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return Standard_True;
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if((theSurf->NbUKnots()-1) * (theSurf->NbVKnots()-1) > NbSeg)
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return Standard_True;
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if(myRational && (theSurf->IsURational() || theSurf->IsVRational()))
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return Standard_True;
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return Standard_False;
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}
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if (aSurface->IsKind(STANDARD_TYPE(Geom_BezierSurface))) {
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if(aParameters->ConvertBezierSurf())
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return Standard_True;
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Handle(Geom_BezierSurface) theSurf = Handle(Geom_BezierSurface)::DownCast(aSurface);
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if(theSurf->UDegree() > Degree || theSurf->VDegree() > Degree)
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return Standard_True;
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if( myRational && (theSurf->IsURational() || theSurf->IsVRational()))
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return Standard_True;
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return Standard_False;
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}
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return Standard_False;
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}
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static Standard_Boolean IsConvertCurve2d(const Handle(Geom2d_Curve)& aCurve,
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Standard_Integer Degree,
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Standard_Integer NbSeg,
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Standard_Boolean myRational,
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const Handle(ShapeCustom_RestrictionParameters)& aParameters)
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{
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if (aCurve.IsNull()) return Standard_False;
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if (aParameters->ConvertCurve2d()) return Standard_True;
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if (aCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) {
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Handle(Geom2d_TrimmedCurve) tmp = Handle(Geom2d_TrimmedCurve)::DownCast (aCurve);
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Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
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return IsConvertCurve2d(BasCurve,Degree,NbSeg,myRational,aParameters);
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}
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if (aCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) {
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if(aParameters->ConvertOffsetCurv2d()) return Standard_True;
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Handle(Geom2d_OffsetCurve) tmp = Handle(Geom2d_OffsetCurve)::DownCast (aCurve);
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Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
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return IsConvertCurve2d(BasCurve,Degree,NbSeg,myRational,aParameters);
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}
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if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve)) &&
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((Handle(Geom2d_BSplineCurve)::DownCast(aCurve)->Degree() > Degree ||
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((Handle(Geom2d_BSplineCurve)::DownCast(aCurve)->NbKnots() -1) > NbSeg )) ||
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(myRational && Handle(Geom2d_BSplineCurve)::DownCast(aCurve)->IsRational())))
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return Standard_True;
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if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BezierCurve)) &&
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((Handle(Geom2d_BezierCurve)::DownCast(aCurve)->Degree() > Degree) ||
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(myRational && Handle(Geom2d_BezierCurve)::DownCast(aCurve)->IsRational())))
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return Standard_True;
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// else return Standard_False;
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return Standard_False;
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}
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//=======================================================================
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//function : ShapeCustom_BSplineRestriction
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//purpose :
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//=======================================================================
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ShapeCustom_BSplineRestriction::ShapeCustom_BSplineRestriction()
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{
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myApproxSurfaceFlag = Standard_True;
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myApproxCurve3dFlag = Standard_True;
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myApproxCurve2dFlag = Standard_True;
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myTol3d = 0.01;
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myTol2d = 1E-6;
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myContinuity3d = GeomAbs_C1;
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myContinuity2d =GeomAbs_C2 ;
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myMaxDegree = 9;
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myNbMaxSeg = 10000;
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mySurfaceError = Precision::Confusion();
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myCurve3dError = Precision::Confusion();
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myCurve2dError = Precision::PConfusion();
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myNbOfSpan = 0;
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myConvert = Standard_False;
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myDeg =Standard_True;
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myRational = Standard_False;
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myParameters = new ShapeCustom_RestrictionParameters;
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}
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ShapeCustom_BSplineRestriction::ShapeCustom_BSplineRestriction(const Standard_Boolean anApproxSurfaceFlag,
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const Standard_Boolean anApproxCurve3dFlag,
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const Standard_Boolean anApproxCurve2dFlag,
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const Standard_Real aTol3d,
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const Standard_Real aTol2d,
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const GeomAbs_Shape aContinuity3d,
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const GeomAbs_Shape aContinuity2d,
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const Standard_Integer aMaxDegree,
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const Standard_Integer aNbMaxSeg,
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const Standard_Boolean Deg,
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const Standard_Boolean Rational)
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{
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myApproxSurfaceFlag = anApproxSurfaceFlag;
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myApproxCurve3dFlag = anApproxCurve3dFlag;
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myApproxCurve2dFlag = anApproxCurve2dFlag;
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myTol3d = aTol3d;
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myTol2d = aTol2d;
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myMaxDegree = aMaxDegree;
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myContinuity3d = aContinuity3d;
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myContinuity2d = aContinuity2d;
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myNbMaxSeg = aNbMaxSeg;
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mySurfaceError = Precision::Confusion();
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myCurve3dError = Precision::Confusion();
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myCurve2dError = Precision::PConfusion();
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myNbOfSpan = 0;
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myConvert = Standard_False;
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myDeg = Deg;
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myRational = Rational;
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myParameters = new ShapeCustom_RestrictionParameters;
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}
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ShapeCustom_BSplineRestriction::ShapeCustom_BSplineRestriction(const Standard_Boolean anApproxSurfaceFlag,
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const Standard_Boolean anApproxCurve3dFlag,
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const Standard_Boolean anApproxCurve2dFlag,
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const Standard_Real aTol3d,
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const Standard_Real aTol2d,
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const GeomAbs_Shape aContinuity3d,
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const GeomAbs_Shape aContinuity2d,
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const Standard_Integer aMaxDegree,
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const Standard_Integer aNbMaxSeg,
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const Standard_Boolean Deg,
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const Standard_Boolean Rational,
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const Handle(ShapeCustom_RestrictionParameters)& aModes)
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{
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myApproxSurfaceFlag = anApproxSurfaceFlag;
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myApproxCurve3dFlag = anApproxCurve3dFlag;
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myApproxCurve2dFlag = anApproxCurve2dFlag;
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myTol3d = aTol3d;
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myTol2d = aTol2d;
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myMaxDegree = aMaxDegree;
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myContinuity3d = aContinuity3d;
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myContinuity2d = aContinuity2d;
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myNbMaxSeg = aNbMaxSeg;
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mySurfaceError = Precision::Confusion();
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myCurve3dError = Precision::Confusion();
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myCurve2dError = Precision::PConfusion();
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myNbOfSpan = 0;
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myConvert = Standard_False;
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myDeg = Deg;
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myRational = Rational;
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myParameters = aModes;
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}
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//=======================================================================
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//function : NewSurface
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//purpose :
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//=======================================================================
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Standard_Boolean ShapeCustom_BSplineRestriction::NewSurface(const TopoDS_Face& F,
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Handle(Geom_Surface)& S,
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TopLoc_Location& L,
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Standard_Real& Tol,
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Standard_Boolean& RevWires,
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Standard_Boolean& RevFace)
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{
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if ( ! myApproxSurfaceFlag )
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return Standard_False;
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RevWires = Standard_False;
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RevFace = Standard_False;
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myConvert = Standard_False;
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Handle(Geom_Surface) aSurface = BRep_Tool::Surface(F,L);
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if(aSurface.IsNull()) return Standard_False;
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Standard_Boolean IsOf = Standard_True;
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if(myParameters->ConvertOffsetSurf()) IsOf = Standard_False;
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Standard_Real UF,UL,VF,VL;
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aSurface->Bounds(UF,UL,VF,VL);
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Standard_Real Umin, Umax, Vmin, Vmax;
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BRepTools::UVBounds(F,Umin, Umax, Vmin, Vmax);
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if(myParameters->SegmentSurfaceMode()) {
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UF = Umin; UL = Umax;
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VF = Vmin; VL = Vmax;
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}
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else {
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if(Precision::IsInfinite(UF) || Precision::IsInfinite(UL)) {
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UF = Umin;
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UL = Umax;
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}
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if(Precision::IsInfinite(VF) || Precision::IsInfinite(VL)) {
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VF = Vmin;
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VL = Vmax;
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}
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}
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Standard_Boolean IsConv = ConvertSurface(aSurface,S,UF,UL,VF,VL,IsOf);
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Tol = Precision::Confusion();//mySurfaceError;
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return IsConv;
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}
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//=======================================================================
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//function : ConvertSurface
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//purpose :
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//=======================================================================
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static void ConvertExtrusion(const Handle(Geom_Curve)& C,/*const gp_Dir& direction,*/
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gp_Trsf& shiftF,gp_Trsf& shiftL,
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const Standard_Real VF,const Standard_Real VL,
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Handle(Geom_Surface)& bspline)
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{
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Handle(Geom_BSplineCurve) bspl = Handle(Geom_BSplineCurve)::DownCast(C);
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Standard_Integer nbPoles = bspl->NbPoles();
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TColgp_Array1OfPnt poles(1,nbPoles);
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TColStd_Array1OfReal weights(1,nbPoles);
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Standard_Integer nbKnots = bspl->NbKnots();
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TColStd_Array1OfReal knots(1,nbKnots);
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TColStd_Array1OfInteger mults(1,nbKnots);
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bspl->Poles(poles);
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bspl->Knots(knots);
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bspl->Multiplicities(mults);
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bspl->Weights(weights);
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TColgp_Array2OfPnt resPoles(1,nbPoles,1,2);
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TColStd_Array2OfReal resWeigth(1,nbPoles,1,2);
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for(Standard_Integer j = 1; j <= nbPoles; j++) {
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resPoles(j,1) = poles(j).Transformed(shiftF);
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resPoles(j,2) = poles(j).Transformed(shiftL);
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resWeigth(j,1)= weights(j);
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resWeigth(j,2)= weights(j);
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}
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TColStd_Array1OfReal vknots(1,2);
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|
TColStd_Array1OfInteger vmults(1,2);
|
|
vknots(1) = VF;
|
|
vknots(2) = VL;
|
|
vmults(1) = vmults(2) = 2;
|
|
|
|
bspline = new Geom_BSplineSurface(resPoles, resWeigth, knots, vknots, mults, vmults,
|
|
bspl->Degree(),1,bspl->IsPeriodic(),Standard_False);
|
|
}
|
|
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::ConvertSurface(const Handle(Geom_Surface)& aSurface,
|
|
Handle(Geom_Surface)& S,
|
|
const Standard_Real UF,
|
|
const Standard_Real UL,
|
|
const Standard_Real VF,
|
|
const Standard_Real VL,
|
|
const Standard_Boolean IsOf)
|
|
{
|
|
if(!IsConvertSurface(aSurface,myMaxDegree,myNbMaxSeg,myRational,myParameters))
|
|
return Standard_False;
|
|
|
|
Handle(Geom_Surface) aSurf = aSurface;
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_Plane)) && myParameters->ConvertPlane()) {
|
|
Handle(Geom_Plane) pln = Handle(Geom_Plane)::DownCast(aSurf);
|
|
TColgp_Array2OfPnt poles(1,2,1,2);
|
|
TColStd_Array1OfReal uknots(1,2);
|
|
TColStd_Array1OfInteger umults(1,2);
|
|
TColStd_Array1OfReal vknots(1,2);
|
|
TColStd_Array1OfInteger vmults(1,2);
|
|
|
|
poles(1,1) = pln->Value(UF,VF); poles(1,2) = pln->Value(UF,VL);
|
|
poles(2,1) = pln->Value(UL,VF); poles(2,2) = pln->Value(UL,VL);
|
|
uknots(1) = UF; uknots(2) = UL;
|
|
vknots(1) = VF; vknots(2) = VL;
|
|
umults(1) = umults(2) = vmults(1) = vmults(2) = 2;
|
|
S = new Geom_BSplineSurface(poles, uknots, vknots, umults, vmults, 1, 1, Standard_False, Standard_False);
|
|
return Standard_True;
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution))) {
|
|
Handle(Geom_SurfaceOfRevolution) Surface = Handle(Geom_SurfaceOfRevolution)::DownCast(aSurf);
|
|
Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
|
|
Handle(Geom_Curve) ResCurve;
|
|
Standard_Real TolS = Precision::Confusion();
|
|
if(myParameters->ConvertRevolutionSurf()) {
|
|
if(BasCurve->IsKind(STANDARD_TYPE(Geom_OffsetCurve))) {
|
|
GeomAbs_Shape cnt = BasCurve->Continuity();
|
|
cnt = (cnt > GeomAbs_C2 ? GeomAbs_C2: cnt);
|
|
if(ConvertCurve(BasCurve,ResCurve,Standard_False,Max(VF,BasCurve->FirstParameter()),Min(VL,BasCurve->LastParameter()),TolS,Standard_False)) {
|
|
Handle(Geom_SurfaceOfRevolution) newRevol = new Geom_SurfaceOfRevolution(ResCurve,Surface->Axis());
|
|
aSurf = newRevol;
|
|
#ifdef DEB
|
|
cout <<" Revolution on offset converted" << endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
}
|
|
else {
|
|
if(ConvertCurve(BasCurve,ResCurve,Standard_False,Max(VF,BasCurve->FirstParameter()),Min(VL,BasCurve->LastParameter()),TolS,IsOf)) {
|
|
S = new Geom_SurfaceOfRevolution(ResCurve,Surface->Axis());
|
|
return Standard_True;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
}
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_SurfaceOfLinearExtrusion))) {
|
|
Handle(Geom_SurfaceOfLinearExtrusion) Surface = Handle(Geom_SurfaceOfLinearExtrusion)::DownCast(aSurf);
|
|
Handle(Geom_Curve) BasCurve = Surface->BasisCurve();
|
|
Handle(Geom_Curve) ResCurve;
|
|
Standard_Real TolS = Precision::Confusion();
|
|
if(myParameters->ConvertExtrusionSurf()) {
|
|
GeomAbs_Shape cnt = Surface->Continuity();
|
|
cnt = (cnt > GeomAbs_C2 ? GeomAbs_C2: cnt);
|
|
Handle(Geom_BSplineCurve) bspl = ShapeConstruct::ConvertCurveToBSpline(BasCurve, UF, UL, TolS, cnt, myNbMaxSeg, myMaxDegree);
|
|
BasCurve = bspl;
|
|
ConvertCurve(BasCurve,ResCurve,Standard_True,Max(UF,BasCurve->FirstParameter()),Min(UL,BasCurve->LastParameter()),TolS,IsOf);
|
|
gp_Trsf shiftF,shiftL;
|
|
shiftF.SetTranslation(Surface->Value(UF,0),Surface->Value(UF,VF));
|
|
shiftL.SetTranslation(Surface->Value(UF,0),Surface->Value(UF,VL));
|
|
ConvertExtrusion(ResCurve,/*Surface->Direction(),*/shiftF,shiftL,VF,VL,S);
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
if(ConvertCurve(BasCurve,ResCurve,Standard_False,Max(UF,BasCurve->FirstParameter()),Min(UL,BasCurve->LastParameter()),TolS,IsOf)) {
|
|
S = new Geom_SurfaceOfLinearExtrusion(ResCurve,Surface->Direction());
|
|
return Standard_True;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
}
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_RectangularTrimmedSurface))) {
|
|
Handle(Geom_RectangularTrimmedSurface) tmp = Handle(Geom_RectangularTrimmedSurface)::
|
|
DownCast (aSurf);
|
|
Standard_Real U1,U2,V1,V2;
|
|
tmp->Bounds(U1,U2,V1,V2);
|
|
Handle(Geom_Surface) theSurf = tmp->BasisSurface();
|
|
Handle(Geom_Surface) ResSurface;
|
|
if(ConvertSurface(theSurf,ResSurface,U1,U2,V1,V2,IsOf)) {
|
|
//S = new Geom_RectangularTrimmedSurface(ResSurface,U1,U2,V1,V2);
|
|
S = ResSurface;
|
|
return Standard_True;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_OffsetSurface)) && IsOf) {
|
|
Handle(Geom_OffsetSurface) tmp = Handle(Geom_OffsetSurface)::DownCast (aSurf);
|
|
Handle(Geom_Surface) theSurf = tmp->BasisSurface();
|
|
Handle(Geom_Surface) ResSurface;
|
|
if(ConvertSurface(theSurf,ResSurface,UF,UL,VF,VL)) {
|
|
if(ResSurface->Continuity() != GeomAbs_C0) {
|
|
S = new Geom_OffsetSurface(ResSurface,tmp->Offset());
|
|
return Standard_True;
|
|
}
|
|
else if(ConvertSurface(aSurf,S,UF,UL,VF,VL,Standard_False))
|
|
return Standard_True;
|
|
else return Standard_False;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_BezierSurface)) && myParameters->ConvertBezierSurf()) {
|
|
Handle(Geom_BezierSurface) bezier = Handle(Geom_BezierSurface)::DownCast(aSurf);
|
|
Standard_Integer nbUPoles = bezier->NbUPoles();
|
|
Standard_Integer nbVPoles = bezier->NbVPoles();
|
|
Standard_Integer uDegree = bezier->UDegree();
|
|
Standard_Integer vDegree = bezier->VDegree();
|
|
TColgp_Array2OfPnt aPoles(1,nbUPoles,1,nbVPoles);
|
|
TColStd_Array2OfReal aWeights(1,nbUPoles,1,nbVPoles);
|
|
bezier->Poles(aPoles);
|
|
bezier->Weights(aWeights);
|
|
TColStd_Array1OfReal uKnots(1,2), vKnots(1,2);
|
|
uKnots(1) = 0; uKnots(2) = 1;
|
|
vKnots(1) = 0; vKnots(2) = 1;
|
|
TColStd_Array1OfInteger uMults(1,2), vMults(1,2);
|
|
uMults.Init(uDegree+1);
|
|
vMults.Init(vDegree+1);
|
|
Handle(Geom_BSplineSurface) bspline = new Geom_BSplineSurface(aPoles,aWeights,uKnots,vKnots,
|
|
uMults,vMults,uDegree,vDegree);
|
|
|
|
if(!ConvertSurface(bspline,S,UF,UL,VF,VL,IsOf))
|
|
S = bspline;
|
|
return Standard_True;
|
|
}
|
|
|
|
Standard_Integer NbSeg = 1;
|
|
Standard_Boolean URat = Standard_False;
|
|
Standard_Boolean VRat = Standard_False;
|
|
//if (aSurf->IsKind(STANDARD_TYPE(Geom_BSplineSurface)) ||
|
|
// aSurf->IsKind(STANDARD_TYPE(Geom_BezierSurface)) ||
|
|
// (aSurf->IsKind(STANDARD_TYPE(Geom_OffsetSurface)) && !IsOf) ||
|
|
// aSurf->IsKind(STANDARD_TYPE(Geom_SurfaceOfRevolution)) ||
|
|
// aSurface->IsKind(STANDARD_TYPE(Geom_ElementarySurface)))) {
|
|
Standard_Integer UDeg=1,VDeg=1;
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_BSplineSurface))) {
|
|
Handle(Geom_BSplineSurface) BsS = Handle(Geom_BSplineSurface)::DownCast (aSurf);
|
|
UDeg = BsS->UDegree();
|
|
VDeg = BsS->VDegree();
|
|
NbSeg = (BsS->NbUKnots()-1)*(BsS->NbVKnots()-1);
|
|
URat = BsS->IsURational();
|
|
VRat = BsS->IsVRational();
|
|
Standard_Boolean IsR = (myRational && (URat || VRat));
|
|
if( UDeg <= myMaxDegree && VDeg <= myMaxDegree && NbSeg <= myNbMaxSeg && !IsR )
|
|
return Standard_False;
|
|
}
|
|
if (aSurf->IsKind(STANDARD_TYPE(Geom_BezierSurface))) {
|
|
Handle(Geom_BezierSurface) BsZ = Handle(Geom_BezierSurface)::DownCast (aSurf);
|
|
UDeg = BsZ->UDegree();
|
|
VDeg = BsZ->VDegree();
|
|
NbSeg =1;
|
|
URat = BsZ->IsURational();
|
|
VRat = BsZ->IsVRational();
|
|
Standard_Boolean IsR = (myRational && (URat || VRat));
|
|
if( UDeg <= myMaxDegree && VDeg <= myMaxDegree && NbSeg <= myNbMaxSeg && !IsR )
|
|
return Standard_False;
|
|
|
|
}
|
|
GeomAbs_Shape Cont = myContinuity3d;
|
|
if(aSurf->IsKind(STANDARD_TYPE(Geom_OffsetSurface))) Cont = GeomAbs_C0;
|
|
/* Standard_Boolean IsR = (myRational && (URat || VRat));
|
|
if( UDeg <= myMaxDegree && VDeg <= myMaxDegree && NbSeg <= myNbMaxSeg && !IsR ) {
|
|
return Standard_False;
|
|
|
|
}*/
|
|
|
|
Standard_Real aTol3d;
|
|
Standard_Integer nbOfSpan,imax=10;
|
|
Standard_Integer MaxSeg = myNbMaxSeg;
|
|
Standard_Integer MaxDeg = myMaxDegree;
|
|
Standard_Real u1,u2,v1,v2;
|
|
aSurf->Bounds(u1,u2,v1,v2);
|
|
Standard_Real ShiftU = 0, ShiftV = 0;
|
|
if( Abs(u1-UF) > Precision::PConfusion() || Abs(u2- UL) > Precision::PConfusion() ||
|
|
Abs(v1-VF) > Precision::PConfusion() || Abs(v2- VL) > Precision::PConfusion()) {
|
|
/*if(aSurf->IsUPeriodic() ) {
|
|
Standard_Real aDelta = (UL > UF ? UL - UF : UF - UL );
|
|
u1 = (aDelta > 2.*M_PI ? 0. : UF + ShapeAnalysis::AdjustByPeriod(UF,0.5*(UL+UF),2*M_PI));
|
|
u2 = (aDelta > 2.*M_PI ? 2.*M_PI : u1 + aDelta);
|
|
}*/
|
|
Standard_Boolean isTrim = Standard_False;
|
|
if(!aSurf->IsUPeriodic() ) { //else {
|
|
u1 = Max(u1,UF); u2 = Min(u2,UL);
|
|
isTrim = Standard_True;
|
|
}
|
|
/*if(aSurf->IsVPeriodic()) {
|
|
|
|
Standard_Real aDelta = (VL > VF ? VL - VF : VF - VL );
|
|
v1 = (aDelta > 2.*M_PI ? 0. : VF + ShapeAnalysis::AdjustByPeriod(VF,0.5*(UL+UF),2*M_PI)); ;
|
|
v2 = (aDelta > 2.*M_PI ? 2.* M_PI : v1 + aDelta);
|
|
}*/
|
|
if(!aSurf->IsVPeriodic()) {//else
|
|
v1 = Max(v1,VF); v2 = Min(v2,VL);
|
|
isTrim = Standard_True;
|
|
}
|
|
|
|
if(isTrim && (u1 != u2) && (v1 != v2)) {
|
|
Handle(Geom_RectangularTrimmedSurface) trSurface = new Geom_RectangularTrimmedSurface(aSurf,u1,u2,v1,v2);
|
|
Standard_Real ur1,ur2,vr1,vr2;
|
|
trSurface->Bounds(ur1,ur2,vr1,vr2);
|
|
ShiftU = u1-ur1;
|
|
ShiftV = v1-vr1;
|
|
aSurf = trSurface;
|
|
}
|
|
}
|
|
Standard_Integer aCU= Min(ContToInteger(Cont),ContToInteger(aSurf->Continuity()));
|
|
Standard_Integer aCV = Min(ContToInteger(Cont),ContToInteger( aSurf->Continuity()));
|
|
if(!aCU)
|
|
aCU = ContToInteger(Cont);
|
|
if(!aCV)
|
|
aCV = ContToInteger(Cont);
|
|
|
|
for(; ;) {
|
|
Standard_Real prevTol = RealLast(),newTol =0;
|
|
for (Standard_Integer i=1; i <= imax; i++) {
|
|
aTol3d = myTol3d*i/2;
|
|
while (aCU >= 0 || aCV >= 0) {
|
|
try {
|
|
OCC_CATCH_SIGNALS
|
|
GeomAbs_Shape aContV = IntegerToGeomAbsShape(aCV);
|
|
GeomAbs_Shape aContU = IntegerToGeomAbsShape(aCU);
|
|
|
|
GeomConvert_ApproxSurface anApprox(aSurf,aTol3d,aContU,aContV,MaxDeg,MaxDeg,MaxSeg,0);
|
|
Standard_Boolean Done = anApprox.IsDone();
|
|
newTol = anApprox.MaxError();
|
|
if (anApprox.MaxError() <= myTol3d && Done) {
|
|
|
|
nbOfSpan = (anApprox.Surface()->NbUKnots()-1)*(anApprox.Surface()->NbVKnots()-1);
|
|
#ifdef DEB
|
|
if((imax-i+1)!=1) {
|
|
cout << " iteration = " << i
|
|
<< "\terror = " << anApprox.MaxError()
|
|
<< "\tspans = " << nbOfSpan << endl;
|
|
cout<< " Surface is aproximated with continuity " << IntegerToGeomAbsShape(Min(aCU,aCV)) <<endl;
|
|
}
|
|
#endif
|
|
S = anApprox.Surface();
|
|
Handle(Geom_BSplineSurface) Bsc = Handle(Geom_BSplineSurface)::DownCast(S);
|
|
if(aSurface->IsUPeriodic() )
|
|
Bsc->SetUPeriodic();
|
|
if(aSurface->IsVPeriodic() )
|
|
Bsc->SetVPeriodic();
|
|
//Standard_Integer DegU = Bsc->UDegree(); // DegU not used (skl)
|
|
//Standard_Integer DegV = Bsc->VDegree(); // DegV not used (skl)
|
|
//Standard_Integer nbVK = Bsc->NbVKnots(); // nbVK not used (skl)
|
|
//Standard_Integer nbUK = Bsc->NbUKnots(); // nbUK not used (skl)
|
|
myConvert = Standard_True;
|
|
myNbOfSpan = myNbOfSpan + nbOfSpan;
|
|
mySurfaceError = Max(mySurfaceError,anApprox.MaxError());
|
|
if(Abs(ShiftU) > Precision::PConfusion()) {
|
|
Standard_Integer nb = Bsc->NbUKnots();
|
|
TColStd_Array1OfReal uknots(1,nb);
|
|
Bsc->UKnots(uknots);
|
|
for(Standard_Integer j = 1; j <= nb; j++)
|
|
uknots(j)+=ShiftU;
|
|
Bsc->SetUKnots(uknots);
|
|
}
|
|
if(Abs(ShiftV) > Precision::PConfusion()) {
|
|
Standard_Integer nb = Bsc->NbVKnots();
|
|
TColStd_Array1OfReal vknots(1,nb);
|
|
Bsc->VKnots(vknots);
|
|
for(Standard_Integer j = 1; j <= nb; j++)
|
|
vknots(j)+=ShiftV;
|
|
Bsc->SetVKnots(vknots);
|
|
}
|
|
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
//#ifdef DEB
|
|
// cout<< " iteration = " << imax-i+1
|
|
// << "\terror = " << anApprox.MaxError() <<endl;
|
|
//#endif
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
catch (Standard_Failure) {
|
|
#ifdef DEB
|
|
cout << "Warning: GeomConvert_ApproxSurface Exception: try to decrease continuity ";
|
|
Standard_Failure::Caught()->Print(cout); cout << endl;
|
|
#endif
|
|
//szv: protection against loop
|
|
if(aCU == 0 && aCV == 0) break;
|
|
if(aCU > 0) aCU--;
|
|
if(aCV > 0) aCV--;
|
|
}
|
|
}
|
|
if(prevTol <= newTol) break;
|
|
else prevTol = newTol;
|
|
}
|
|
//Standard_Integer GMaxDegree = 15;//Geom_BSplineSurface::MaxDegree();
|
|
|
|
if(myDeg) {
|
|
if(MaxSeg < myParameters->GMaxSeg()){
|
|
if(aCV != 0 || aCU != 0) {
|
|
if(aCV > 0) aCV--;
|
|
if(aCU > 0) aCU--;
|
|
}
|
|
else MaxSeg = 2*MaxSeg; //myGMaxSeg;
|
|
if(MaxSeg > myParameters->GMaxSeg())
|
|
MaxSeg = myParameters->GMaxSeg();
|
|
else continue;
|
|
}
|
|
else {
|
|
#ifdef DEB
|
|
cout<<" Approximation iteration out. Surface is not aproximated." << endl;
|
|
#endif
|
|
return Standard_False;
|
|
}
|
|
}
|
|
else {
|
|
if(MaxDeg < myParameters->GMaxDegree())
|
|
{ MaxDeg = myParameters->GMaxDegree(); continue;}
|
|
else {
|
|
#ifdef DEB
|
|
cout<<" Approximation iteration out. Surface is not aproximated." << endl;
|
|
#endif
|
|
return Standard_False;
|
|
}
|
|
}
|
|
}
|
|
//}
|
|
//else
|
|
//Surface is not BSpline or Bezier
|
|
// return Standard_False;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : NewCurve
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::NewCurve(const TopoDS_Edge& E,
|
|
Handle(Geom_Curve)& C,
|
|
TopLoc_Location& L,
|
|
Standard_Real& Tol)
|
|
{
|
|
if ( ! myApproxCurve3dFlag )
|
|
return Standard_False;
|
|
Standard_Real First, Last;
|
|
Handle(Geom_Curve) aCurve = BRep_Tool::Curve(E,L,First, Last);
|
|
Standard_Real TolCur = BRep_Tool::Tolerance(E);
|
|
//if(aCurve.IsNull()) return Standard_False;
|
|
Standard_Boolean IsConvert = Standard_False;
|
|
Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape());
|
|
// iterate on pcurves
|
|
BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves());
|
|
for ( ; itcr.More(); itcr.Next() ) {
|
|
Handle(BRep_GCurve) GC = Handle(BRep_GCurve)::DownCast(itcr.Value());
|
|
if ( GC.IsNull() || ! GC->IsCurveOnSurface() ) continue;
|
|
Handle(Geom_Surface) aSurface = GC->Surface();
|
|
Handle(Geom2d_Curve) aCurve2d = GC->PCurve();
|
|
if((myApproxSurfaceFlag &&
|
|
IsConvertSurface(aSurface,myMaxDegree,myNbMaxSeg,myRational,myParameters)) ||
|
|
(myApproxCurve2dFlag && IsConvertCurve2d(aCurve2d,myMaxDegree,myNbMaxSeg,myRational,myParameters))) {
|
|
IsConvert = Standard_True;
|
|
break;
|
|
}
|
|
}
|
|
if(aCurve.IsNull()) {
|
|
if(IsConvert) {
|
|
C = aCurve;
|
|
Tol = TolCur;
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
Standard_Boolean IsOf = Standard_True;
|
|
if(myParameters->ConvertOffsetCurv3d()) IsOf = Standard_False;
|
|
Standard_Boolean IsConv = ConvertCurve(aCurve,C,IsConvert,First,Last,TolCur,IsOf);
|
|
Tol= BRep_Tool::Tolerance(E);//TolCur;
|
|
return IsConv;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : ConvertCurve
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::ConvertCurve(Handle(Geom_Curve)& aCurve,
|
|
Handle(Geom_Curve)& C,
|
|
const Standard_Boolean IsConvert,
|
|
const Standard_Real First,
|
|
const Standard_Real Last,
|
|
Standard_Real& TolCur,
|
|
const Standard_Boolean IsOf)
|
|
{
|
|
// TolCur = Precision::Confusion();
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_TrimmedCurve))) {
|
|
Handle(Geom_TrimmedCurve) tmp = Handle(Geom_TrimmedCurve)::DownCast (aCurve);
|
|
//Standard_Real pf =tmp->FirstParameter(), pl = tmp->LastParameter(); // pf,pl not used - see below (skl)
|
|
Handle(Geom_Curve) BasCurve = tmp->BasisCurve();
|
|
Handle(Geom_Curve) ResCurve;
|
|
if(ConvertCurve(BasCurve,ResCurve,IsConvert,First,Last,TolCur,IsOf)) {
|
|
// Stanadrd_Real F = Max(pf,First), L = Min(pl,Last);
|
|
// if(First != Last)
|
|
// C = new Geom_TrimmedCurve(ResCurve,Max(First,ResCurve->FirstParameter()),Min(Last,ResCurve->LastParameter()));
|
|
//else
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
|
|
return Standard_False;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_Line)) && myParameters->ConvertCurve3d()) {
|
|
Handle(Geom_Line) aLine = Handle(Geom_Line)::DownCast(aCurve);
|
|
TColgp_Array1OfPnt poles(1,2);
|
|
poles(1) = aLine->Value(First);
|
|
poles(2) = aLine->Value(Last);
|
|
TColStd_Array1OfReal knots(1,2);
|
|
knots(1) = First; knots(2) = Last;
|
|
TColStd_Array1OfInteger mults(1,2);
|
|
mults.Init(2);
|
|
Handle(Geom_BSplineCurve) res = new Geom_BSplineCurve(poles,knots,mults,1);
|
|
C = res;
|
|
return Standard_True;
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_Conic)) && myParameters->ConvertCurve3d()) {
|
|
Handle(Geom_BSplineCurve) aBSpline;
|
|
Handle(Geom_TrimmedCurve) tcurve = new Geom_TrimmedCurve(aCurve,First,Last); //protection agains parabols ets
|
|
GeomConvert_ApproxCurve approx (tcurve, myTol3d/*Precision::Approximation()*/, myContinuity2d, myNbMaxSeg, 6 );
|
|
if ( approx.HasResult() )
|
|
aBSpline = Handle(Geom_BSplineCurve)::DownCast(approx.Curve());
|
|
else
|
|
aBSpline = GeomConvert::CurveToBSplineCurve(tcurve,Convert_QuasiAngular);
|
|
|
|
Standard_Real Shift = First - aBSpline->FirstParameter();
|
|
if(Abs(Shift) > Precision::PConfusion()) {
|
|
Standard_Integer nbKnots = aBSpline->NbKnots();
|
|
TColStd_Array1OfReal newKnots(1,nbKnots);
|
|
aBSpline->Knots(newKnots);
|
|
for (Standard_Integer i = 1; i <= nbKnots; i++)
|
|
newKnots(i)+=Shift;
|
|
aBSpline->SetKnots(newKnots);
|
|
}
|
|
Handle(Geom_Curve) ResCurve;
|
|
if(ConvertCurve(aBSpline,ResCurve,IsConvert,First,Last,TolCur,Standard_False)) {
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
C = aBSpline;
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_BezierCurve)) && myParameters->ConvertCurve3d()) {
|
|
Handle(Geom_BSplineCurve) aBSpline
|
|
= GeomConvert::CurveToBSplineCurve(aCurve,Convert_QuasiAngular);
|
|
Handle(Geom_Curve) ResCurve;
|
|
if(ConvertCurve(aBSpline,ResCurve,IsConvert,First,Last,TolCur,Standard_False)) {
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
C = aBSpline;
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_OffsetCurve)) && IsOf) {
|
|
Handle(Geom_OffsetCurve) tmp = Handle(Geom_OffsetCurve)::DownCast (aCurve);
|
|
Handle(Geom_Curve) BasCurve = tmp->BasisCurve();
|
|
Handle(Geom_Curve) ResCurve;
|
|
if(ConvertCurve(BasCurve,ResCurve,IsConvert,First,Last,TolCur)) {
|
|
if(ResCurve->Continuity() != GeomAbs_C0) {
|
|
C = new Geom_OffsetCurve(ResCurve,tmp->Offset(),tmp->Direction());
|
|
return Standard_True;
|
|
}
|
|
else if(ConvertCurve(aCurve,C,IsConvert,First,Last,TolCur,Standard_False))
|
|
return Standard_True;
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
return Standard_False;
|
|
}
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
return Standard_False;
|
|
}
|
|
}
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_BSplineCurve)) ||
|
|
aCurve->IsKind(STANDARD_TYPE(Geom_BezierCurve)) ||
|
|
(aCurve->IsKind(STANDARD_TYPE(Geom_OffsetCurve)) && !IsOf)) {
|
|
Standard_Integer Deg=1;
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_BSplineCurve))) {
|
|
Handle(Geom_BSplineCurve) BsC = Handle(Geom_BSplineCurve)::DownCast (aCurve);
|
|
Deg =BsC->Degree();
|
|
Standard_Boolean IsR = (myRational && BsC->IsRational());
|
|
if(!IsR && Deg <= myMaxDegree && (BsC->NbKnots() - 1) <= myNbMaxSeg) {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom_BezierCurve))) {
|
|
Handle(Geom_BezierCurve) BzC = Handle(Geom_BezierCurve)::DownCast (aCurve);
|
|
Deg =BzC->Degree();
|
|
Standard_Boolean IsR = (myRational && BzC->IsRational());
|
|
if(!IsR && Deg <= myMaxDegree ) {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
Handle(Geom_Curve) aCurve1;
|
|
Standard_Real pf =aCurve->FirstParameter(), pl = aCurve->LastParameter();
|
|
// 15.11.2002 PTV OCC966
|
|
if(ShapeAnalysis_Curve::IsPeriodic(aCurve) && (First != Last)) aCurve1 = new Geom_TrimmedCurve(aCurve,First,Last);
|
|
else if(pf < (First - Precision::PConfusion()) ||
|
|
pl > (Last + Precision::PConfusion())) {
|
|
Standard_Real F = Max(First,pf),
|
|
L = Min(Last,pl);
|
|
if(F != L)
|
|
aCurve1 = new Geom_TrimmedCurve(aCurve,F,L);
|
|
else aCurve1 = aCurve;
|
|
}
|
|
else aCurve1 = aCurve;
|
|
Standard_Integer aC = Min(ContToInteger(myContinuity3d),ContToInteger(aCurve->Continuity()));
|
|
if(!aC)
|
|
aC = ContToInteger(myContinuity3d);
|
|
//aC = Min(aC,(Deg -1));
|
|
Standard_Integer MaxSeg = myNbMaxSeg;
|
|
Standard_Integer MaxDeg = myMaxDegree;
|
|
//GeomAbs_Shape aCont = IntegerToGeomAbsShape(aC);
|
|
Standard_Integer aC1 = aC;
|
|
//Standard_Integer GMaxDegree = 15; //Geom_BSplineCurve::MaxDegree();
|
|
for(; aC >= 0; aC--) {
|
|
try {
|
|
OCC_CATCH_SIGNALS
|
|
for(Standard_Integer j = 1; j <=2 ; j++) {
|
|
GeomAbs_Shape aCont = IntegerToGeomAbsShape(aC);
|
|
GeomConvert_ApproxCurve anApprox(aCurve1,myTol3d,aCont,MaxSeg,MaxDeg);
|
|
Standard_Boolean Done = anApprox.IsDone();
|
|
C=anApprox.Curve();
|
|
Standard_Integer Nbseg = Handle(Geom_BSplineCurve)::DownCast(C)->NbKnots() - 1;
|
|
Standard_Integer DegC = Handle(Geom_BSplineCurve)::DownCast(C)->Degree();
|
|
if( myDeg && ((DegC > MaxDeg) || !Done ||
|
|
(anApprox.MaxError() >= Max(TolCur,myTol3d)))) {
|
|
if(MaxSeg < myParameters->GMaxSeg()) { MaxSeg = myParameters->GMaxSeg(); aC =aC1; continue;}
|
|
else {
|
|
#ifdef DEB
|
|
cout << "Curve is not aproxed with continuity "<< aCont<<endl;
|
|
#endif
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
}
|
|
if(!myDeg && ((Nbseg > myParameters->GMaxSeg()) || !Done ||
|
|
(anApprox.MaxError() >= Max(TolCur,myTol3d)))) {
|
|
if(MaxDeg < myParameters->GMaxDegree()) {
|
|
MaxDeg = myParameters->GMaxDegree(); aC = aC1; continue;
|
|
}
|
|
else {
|
|
#ifdef DEB
|
|
cout << "Curve is not aproxed with continuity "<< aCont<<endl;
|
|
#endif
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
}
|
|
myConvert = Standard_True;
|
|
TolCur = anApprox.MaxError();
|
|
myCurve3dError = Max(myCurve3dError,anApprox.MaxError());
|
|
return Standard_True;
|
|
}
|
|
}
|
|
catch (Standard_Failure) {
|
|
#ifdef DEB
|
|
cout << "Warning: GeomConvert_ApproxCurve Exception: Wrong Coefficient : Decrease continuity ";
|
|
Standard_Failure::Caught()->Print(cout); cout << endl;
|
|
#endif
|
|
continue;
|
|
}
|
|
}
|
|
return Standard_False;
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::Confusion();
|
|
return Standard_True;
|
|
}
|
|
return Standard_False;
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : NewCurve2d
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::NewCurve2d(const TopoDS_Edge& E,
|
|
const TopoDS_Face& F,
|
|
const TopoDS_Edge& NewE,
|
|
const TopoDS_Face& /*NewF*/,
|
|
Handle(Geom2d_Curve)& C,
|
|
Standard_Real& Tol)
|
|
{
|
|
if ( ! myApproxCurve2dFlag && !myApproxSurfaceFlag)
|
|
return Standard_False;
|
|
Standard_Real First, Last,F1,L1;
|
|
TopLoc_Location L,Loc1;
|
|
Handle(Geom_Surface) aSurface = BRep_Tool::Surface(F,L);
|
|
GeomAdaptor_Surface AdS(aSurface);
|
|
Standard_Real TolCur = Min(AdS.UResolution(BRep_Tool::Tolerance(E)),AdS.VResolution(BRep_Tool::Tolerance(E)));
|
|
Handle(Geom2d_Curve) aCurve = BRep_Tool::CurveOnSurface(E,F,First, Last);
|
|
if(aCurve.IsNull()) return Standard_False;
|
|
Handle(Geom_Curve) aCur3d = BRep_Tool::Curve(E,Loc1,F1, L1);
|
|
// Standard_Boolean IsConvert = (IsConvertSurface(aSurface,myMaxDegree,myNbMaxSeg) || !E.IsSame(NewE));
|
|
|
|
Standard_Boolean IsConvert =
|
|
((myApproxSurfaceFlag && IsConvertSurface(aSurface,myMaxDegree,myNbMaxSeg,myRational,myParameters)) ||
|
|
(myApproxCurve3dFlag && IsConvertCurve3d(aCur3d,myMaxDegree,myNbMaxSeg,myRational,myParameters)));
|
|
|
|
if(!IsConvert) {
|
|
Handle(BRep_TEdge)& TE = *((Handle(BRep_TEdge)*)&E.TShape());
|
|
// iterate on pcurves
|
|
BRep_ListIteratorOfListOfCurveRepresentation itcr(TE->Curves());
|
|
for ( ; itcr.More(); itcr.Next() ) {
|
|
Handle(BRep_GCurve) GC = Handle(BRep_GCurve)::DownCast(itcr.Value());
|
|
if ( GC.IsNull() || ! GC->IsCurveOnSurface() ) continue;
|
|
Handle(Geom_Surface) aSurf = GC->Surface();
|
|
Handle(Geom2d_Curve) aCur2d = GC->PCurve();
|
|
if((myApproxSurfaceFlag && IsConvertSurface(aSurf,myMaxDegree,myNbMaxSeg,myRational,myParameters)) ||
|
|
(myApproxCurve2dFlag && IsConvertCurve2d(aCur2d,myMaxDegree,myNbMaxSeg,myRational,myParameters))) {
|
|
IsConvert = Standard_True;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if(! myApproxCurve2dFlag){
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
return Standard_True;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
}
|
|
Standard_Boolean IsOf = Standard_True;
|
|
if(myParameters->ConvertOffsetCurv2d()) IsOf = Standard_False;
|
|
Standard_Boolean IsConv = ConvertCurve2d(aCurve,C,IsConvert,First,Last,TolCur,IsOf);
|
|
|
|
Tol= BRep_Tool::Tolerance(E);//TolCur;
|
|
BRep_Builder B;
|
|
if(!IsConv && !NewE.IsSame( E))
|
|
B.Range(NewE,First,Last);
|
|
return IsConv;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : ConvertCurve2d
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::ConvertCurve2d(Handle(Geom2d_Curve)& aCurve,
|
|
Handle(Geom2d_Curve)& C,
|
|
const Standard_Boolean IsConvert,
|
|
const Standard_Real First,
|
|
const Standard_Real Last,
|
|
Standard_Real& TolCur,
|
|
const Standard_Boolean IsOf)
|
|
{
|
|
//TolCur = Precision::PConfusion();
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_TrimmedCurve))) {
|
|
Handle(Geom2d_TrimmedCurve) tmp = Handle(Geom2d_TrimmedCurve)::DownCast (aCurve);
|
|
// Standard_Real pf =tmp->FirstParameter(), pl = tmp->LastParameter();
|
|
Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
|
|
Handle(Geom2d_Curve) ResCurve;
|
|
if(ConvertCurve2d(BasCurve,ResCurve,IsConvert,First,Last,TolCur,IsOf)) {
|
|
// Standard_Real F = Max(ResCurve->FirstParameter(),First), L = Min(ResCurve->LastParameter(),Last);
|
|
// if(F != Last)
|
|
//C = new Geom2d_TrimmedCurve(ResCurve,Max(First,ResCurve->FirstParameter()),Min(Last,ResCurve->LastParameter()));
|
|
//else
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_Line)) && myParameters->ConvertCurve2d()) {
|
|
Handle(Geom2d_Line) aLine2d = Handle(Geom2d_Line)::DownCast(aCurve);
|
|
TColgp_Array1OfPnt2d poles(1,2);
|
|
poles(1) = aLine2d->Value(First);
|
|
poles(2) = aLine2d->Value(Last);
|
|
TColStd_Array1OfReal knots(1,2);
|
|
knots(1) = First; knots(2) = Last;
|
|
TColStd_Array1OfInteger mults(1,2);
|
|
mults.Init(2);
|
|
Handle(Geom2d_BSplineCurve) res = new Geom2d_BSplineCurve(poles,knots,mults,1);
|
|
C = res;
|
|
return Standard_True;
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_Conic)) && myParameters->ConvertCurve2d()) {
|
|
Handle(Geom2d_BSplineCurve) aBSpline2d;
|
|
Handle(Geom2d_TrimmedCurve) tcurve = new Geom2d_TrimmedCurve(aCurve,First,Last); //protection agains parabols ets
|
|
Geom2dConvert_ApproxCurve approx (tcurve, myTol2d,myContinuity2d,myNbMaxSeg , 6 );
|
|
if ( approx.HasResult() )
|
|
aBSpline2d = Handle(Geom2d_BSplineCurve)::DownCast(approx.Curve());
|
|
else
|
|
aBSpline2d = Geom2dConvert::CurveToBSplineCurve(tcurve,Convert_QuasiAngular);
|
|
|
|
Standard_Real Shift = First - aBSpline2d->FirstParameter();
|
|
if(Abs(Shift) > Precision::PConfusion()) {
|
|
Standard_Integer nbKnots = aBSpline2d->NbKnots();
|
|
TColStd_Array1OfReal newKnots(1,nbKnots);
|
|
aBSpline2d->Knots(newKnots);
|
|
for (Standard_Integer i = 1; i <= nbKnots; i++)
|
|
newKnots(i)+=Shift;
|
|
aBSpline2d->SetKnots(newKnots);
|
|
}
|
|
Handle(Geom2d_Curve) ResCurve;
|
|
if(ConvertCurve2d(aBSpline2d,ResCurve,IsConvert,First,Last,TolCur,Standard_False)) {
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
C = aBSpline2d;
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BezierCurve)) && myParameters->ConvertCurve2d()) {
|
|
Handle(Geom2d_BSplineCurve) aBSpline2d
|
|
= Geom2dConvert::CurveToBSplineCurve(aCurve,Convert_QuasiAngular);
|
|
Handle(Geom2d_Curve) ResCurve;
|
|
if(ConvertCurve2d(aBSpline2d,ResCurve,IsConvert,First,Last,TolCur,Standard_False)) {
|
|
C = ResCurve;
|
|
return Standard_True;
|
|
}
|
|
else {
|
|
C = aBSpline2d;
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve)) && IsOf) {
|
|
Handle(Geom2d_OffsetCurve) tmp = Handle(Geom2d_OffsetCurve)::DownCast (aCurve);
|
|
Handle(Geom2d_Curve) BasCurve = tmp->BasisCurve();
|
|
Handle(Geom2d_Curve) ResCurve;
|
|
if(ConvertCurve2d(BasCurve,ResCurve,IsConvert,First,Last,TolCur)) {
|
|
if(ResCurve->Continuity() != GeomAbs_C0) {
|
|
C = new Geom2d_OffsetCurve(ResCurve,tmp->Offset());
|
|
return Standard_True;
|
|
}
|
|
else if (ConvertCurve2d(aCurve,ResCurve,IsConvert,First,Last,TolCur,Standard_False))
|
|
return Standard_True;
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
|
|
}
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve)) ||
|
|
aCurve->IsKind(STANDARD_TYPE(Geom2d_BezierCurve)) ||
|
|
((aCurve->IsKind(STANDARD_TYPE(Geom2d_OffsetCurve))) && !IsOf )) {
|
|
Standard_Integer Deg=1;
|
|
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BSplineCurve))) {
|
|
Handle(Geom2d_BSplineCurve) BsC = Handle(Geom2d_BSplineCurve)::DownCast (aCurve);
|
|
Deg =BsC->Degree();
|
|
Standard_Boolean IsR = (myRational && BsC->IsRational());
|
|
if(!IsR && Deg <= myMaxDegree && (BsC->NbKnots() -1) <= myNbMaxSeg) {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
if (aCurve->IsKind(STANDARD_TYPE(Geom2d_BezierCurve))) {
|
|
Handle(Geom2d_BezierCurve)BzC = Handle(Geom2d_BezierCurve)::DownCast (aCurve);
|
|
Deg =BzC->Degree();
|
|
Standard_Boolean IsR = (myRational && BzC->IsRational());
|
|
if(!IsR && Deg <= myMaxDegree) {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
Handle(Geom2d_Curve) aCurve1;
|
|
Standard_Real pf =aCurve->FirstParameter(), pl = aCurve->LastParameter();
|
|
// 15.11.2002 PTV OCC966
|
|
if(ShapeAnalysis_Curve::IsPeriodic(aCurve) && (First != Last)) aCurve1 = new Geom2d_TrimmedCurve(aCurve,First,Last);
|
|
else if(aCurve->FirstParameter() < (First - Precision::PConfusion()) ||
|
|
aCurve->LastParameter() > (Last + Precision::PConfusion())) {
|
|
Standard_Real F = Max(First,pf),
|
|
L = Min(Last,pl);
|
|
if(F != L)
|
|
aCurve1 = new Geom2d_TrimmedCurve(aCurve,F,L);
|
|
else aCurve1 = aCurve;
|
|
}
|
|
else aCurve1 = aCurve;
|
|
Standard_Integer aC = Min(ContToInteger(myContinuity2d),ContToInteger( aCurve->Continuity()));
|
|
if(!aC)
|
|
aC = ContToInteger(myContinuity2d);
|
|
//aC = Min(aC,(Deg -1));
|
|
Standard_Integer aC1 = aC;
|
|
//GeomAbs_Shape aCont =IntegerToGeomAbsShape(aC);
|
|
Standard_Integer MaxSeg = myNbMaxSeg;
|
|
Standard_Integer MaxDeg = myMaxDegree;
|
|
//Standard_Integer GMaxDegree = 15;//Geom2d_BSplineCurve::MaxDegree();
|
|
for(; aC >= 0; aC--) {
|
|
try {
|
|
OCC_CATCH_SIGNALS
|
|
GeomAbs_Shape aCont = IntegerToGeomAbsShape(aC);
|
|
for(Standard_Integer j =1;j<=2 ;j++) {
|
|
Geom2dConvert_ApproxCurve anApprox(aCurve1,myTol2d,aCont,MaxSeg,MaxDeg);
|
|
Standard_Boolean Done = anApprox.IsDone();
|
|
C=anApprox.Curve();
|
|
Standard_Integer Nbseg = Handle(Geom2d_BSplineCurve)::DownCast(C)->NbKnots() -1;
|
|
Standard_Integer DegC = Handle(Geom2d_BSplineCurve)::DownCast(C)->Degree();
|
|
|
|
if(myDeg && ((DegC > MaxDeg) || !Done || ( anApprox.MaxError() >= Max(myTol2d,TolCur)))) {
|
|
if(MaxSeg < myParameters->GMaxSeg()) { MaxSeg = myParameters->GMaxSeg(); aC =aC1; continue;}
|
|
else {
|
|
#ifdef DEB
|
|
cout << "Curve is not aproxed with continuity "<< aCont<<endl;
|
|
#endif
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
}
|
|
|
|
if(!myDeg && (( Nbseg >= MaxSeg)|| !Done || ( anApprox.MaxError() >= Max(myTol2d,TolCur)))) {
|
|
if(MaxDeg < myParameters->GMaxDegree()) {
|
|
MaxDeg = myParameters->GMaxDegree(); aC =aC1; continue;
|
|
}
|
|
else {
|
|
#ifdef DEB
|
|
cout << "Curve is not aproxed with continuity "<< aCont<<endl;
|
|
#endif
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
}
|
|
}
|
|
myConvert= Standard_True;
|
|
TolCur = anApprox.MaxError();
|
|
myCurve2dError = Max(myCurve2dError,anApprox.MaxError());
|
|
return Standard_True;
|
|
}
|
|
}
|
|
catch (Standard_Failure) {
|
|
#ifdef DEB
|
|
cout << "Warning: Geom2dConvert_ApproxCurve Exception: Wrong Cofficient :Decrease Continuity ";
|
|
Standard_Failure::Caught()->Print(cout); cout << endl;
|
|
#endif
|
|
continue;
|
|
}
|
|
}
|
|
return Standard_False;
|
|
}
|
|
else {
|
|
if(IsConvert) {
|
|
C = Handle(Geom2d_Curve)::DownCast(aCurve->Copy());
|
|
TolCur = Precision::PConfusion();
|
|
return Standard_True;
|
|
}
|
|
else return Standard_False;
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : NewPoint
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::NewPoint(const TopoDS_Vertex& V,
|
|
gp_Pnt& P,
|
|
Standard_Real& Tol)
|
|
{
|
|
Tol = BRep_Tool::Tolerance(V);
|
|
if(myConvert) {
|
|
gp_Pnt p1(BRep_Tool::Pnt(V).XYZ());
|
|
P = p1;
|
|
return Standard_True;
|
|
}
|
|
else
|
|
return Standard_False;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : NewParameter
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean ShapeCustom_BSplineRestriction::NewParameter(const TopoDS_Vertex& /*V*/,
|
|
const TopoDS_Edge& /*E*/,
|
|
Standard_Real& /*P*/,
|
|
Standard_Real& /*Tol*/)
|
|
{
|
|
return Standard_False;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : Continuity
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
GeomAbs_Shape ShapeCustom_BSplineRestriction::Continuity(const TopoDS_Edge& E,
|
|
const TopoDS_Face& F1,
|
|
const TopoDS_Face& F2,
|
|
const TopoDS_Edge& /*NewE*/,
|
|
const TopoDS_Face& /*NewF1*/,
|
|
const TopoDS_Face& /*NewF2*/)
|
|
{
|
|
return BRep_Tool::Continuity(E,F1,F2);
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : MaxErrors
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Real ShapeCustom_BSplineRestriction::MaxErrors(Standard_Real& aCurve3dErr,Standard_Real& aCurve2dErr) const
|
|
{
|
|
aCurve3dErr = myCurve3dError;
|
|
aCurve2dErr = myCurve2dError;
|
|
return mySurfaceError;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : NbOfSpan
|
|
//purpose :
|
|
//======================================================================
|
|
|
|
Standard_Integer ShapeCustom_BSplineRestriction::NbOfSpan() const
|
|
{
|
|
return myNbOfSpan;
|
|
}
|
|
|