mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-09 18:50:54 +03:00
0e14656b30
Dereferenced null pointers was eliminated for PLib, BSplCLib and BSplSLib. All affected code was changed accordingly.
901 lines
26 KiB
C++
901 lines
26 KiB
C++
// Created on: 1991-07-05
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// Created by: JCV
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// Copyright (c) 1991-1999 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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// 03-02-97 : pmn ->LocateU sur Periodic (PRO6963),
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// bon appel a LocateParameter (PRO6973) et mise en conformite avec
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// le cdl de LocateU, lorsque U est un noeud (PRO6988)
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#define No_Standard_OutOfRange
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#define No_Standard_DimensionError
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#include <BSplCLib.hxx>
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#include <Geom2d_BSplineCurve.hxx>
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#include <Geom2d_Geometry.hxx>
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#include <Geom2d_UndefinedDerivative.hxx>
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#include <gp.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Trsf2d.hxx>
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#include <gp_Vec2d.hxx>
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#include <Precision.hxx>
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#include <Standard_ConstructionError.hxx>
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#include <Standard_DimensionError.hxx>
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#include <Standard_DomainError.hxx>
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#include <Standard_NoSuchObject.hxx>
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#include <Standard_OutOfRange.hxx>
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#include <Standard_RangeError.hxx>
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#define POLES (poles->Array1())
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#define KNOTS (knots->Array1())
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#define FKNOTS (flatknots->Array1())
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#define FMULTS (BSplCLib::NoMults())
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//=======================================================================
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//function : IsCN
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_BSplineCurve::IsCN ( const Standard_Integer N) const
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{
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Standard_RangeError_Raise_if
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(N < 0, "Geom2d_BSplineCurve::IsCN");
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switch (smooth) {
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case GeomAbs_CN : return Standard_True;
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case GeomAbs_C0 : return N <= 0;
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case GeomAbs_G1 : return N <= 0;
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case GeomAbs_C1 : return N <= 1;
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case GeomAbs_G2 : return N <= 1;
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case GeomAbs_C2 : return N <= 2;
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case GeomAbs_C3 :
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return N <= 3 ? Standard_True :
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N <= deg - BSplCLib::MaxKnotMult (mults->Array1(), mults->Lower() + 1, mults->Upper() - 1);
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default:
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return Standard_False;
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}
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}
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//=======================================================================
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//function : IsG1
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_BSplineCurve::IsG1 ( const Standard_Real theTf,
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const Standard_Real theTl,
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const Standard_Real theAngTol) const
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{
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if(IsCN(1))
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{
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return Standard_True;
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}
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Standard_Integer start = FirstUKnotIndex()+1,
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finish = LastUKnotIndex()-1;
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Standard_Integer aDeg = Degree();
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for(Standard_Integer aNKnot = start; aNKnot <= finish; aNKnot++)
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{
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const Standard_Real aTpar = Knot(aNKnot);
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if(aTpar < theTf)
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continue;
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if(aTpar > theTl)
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break;
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Standard_Integer mult = Multiplicity(aNKnot);
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if (mult < aDeg)
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continue;
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gp_Pnt2d aP1, aP2;
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gp_Vec2d aV1, aV2;
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LocalD1(aTpar, aNKnot-1, aNKnot, aP1, aV1);
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LocalD1(aTpar, aNKnot, aNKnot+1, aP2, aV2);
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if((aV1.SquareMagnitude() <= gp::Resolution()) ||
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aV2.SquareMagnitude() <= gp::Resolution())
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{
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return Standard_False;
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}
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if(Abs(aV1.Angle(aV2)) > theAngTol)
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return Standard_False;
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}
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if(!IsPeriodic())
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return Standard_True;
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const Standard_Real aFirstParam = FirstParameter(),
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aLastParam = LastParameter();
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if( ((aFirstParam - theTf)*(theTl - aFirstParam) < 0.0) &&
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((aLastParam - theTf)*(theTl - aLastParam) < 0.0))
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{
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//Range [theTf, theTl] does not intersect curve bounadries
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return Standard_True;
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}
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//Curve is closed or periodic and range [theTf, theTl]
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//intersect curve boundary. Therefore, it is necessary to
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//check if curve is smooth in its first and last point.
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gp_Pnt2d aP;
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gp_Vec2d aV1, aV2;
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D1(Knot(FirstUKnotIndex()), aP, aV1);
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D1(Knot(LastUKnotIndex()), aP, aV2);
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if((aV1.SquareMagnitude() <= gp::Resolution()) ||
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aV2.SquareMagnitude() <= gp::Resolution())
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{
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return Standard_False;
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}
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if(Abs(aV1.Angle(aV2)) > theAngTol)
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return Standard_False;
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return Standard_True;
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}
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//=======================================================================
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//function : IsClosed
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_BSplineCurve::IsClosed () const
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{ return (StartPoint().Distance (EndPoint())) <= gp::Resolution (); }
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//=======================================================================
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//function : IsPeriodic
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//purpose :
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//=======================================================================
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Standard_Boolean Geom2d_BSplineCurve::IsPeriodic () const
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{ return periodic; }
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//=======================================================================
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//function : Continuity
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//purpose :
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//=======================================================================
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GeomAbs_Shape Geom2d_BSplineCurve::Continuity () const
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{ return smooth; }
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//=======================================================================
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//function : Degree
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//purpose :
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//=======================================================================
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Standard_Integer Geom2d_BSplineCurve::Degree () const
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{ return deg; }
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//=======================================================================
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//function : D0
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::D0(const Standard_Real U,
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gp_Pnt2d& P) const
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{
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Standard_Integer aSpanIndex = 0;
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Standard_Real aNewU(U);
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PeriodicNormalization(aNewU);
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BSplCLib::LocateParameter(deg, knots->Array1(), &mults->Array1(), U, periodic, aSpanIndex, aNewU);
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if (aNewU < knots->Value(aSpanIndex))
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aSpanIndex--;
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if (rational)
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{
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BSplCLib::D0(aNewU,aSpanIndex,deg,periodic,POLES,
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&weights->Array1(),
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knots->Array1(), &mults->Array1(),
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P);
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}
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else
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{
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BSplCLib::D0(aNewU,aSpanIndex,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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knots->Array1(), &mults->Array1(),
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P);
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}
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}
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//=======================================================================
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//function : D1
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::D1(const Standard_Real U,
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gp_Pnt2d& P,
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gp_Vec2d& V1) const
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{
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Standard_Integer aSpanIndex = 0;
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Standard_Real aNewU(U);
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PeriodicNormalization(aNewU);
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BSplCLib::LocateParameter(deg, knots->Array1(), &mults->Array1(), U, periodic, aSpanIndex, aNewU);
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if (aNewU < knots->Value(aSpanIndex))
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aSpanIndex--;
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if (rational)
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{
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BSplCLib::D1(aNewU,aSpanIndex,deg,periodic,POLES,
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&weights->Array1(),
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knots->Array1(), &mults->Array1(),
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P, V1);
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}
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else
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{
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BSplCLib::D1(aNewU,aSpanIndex,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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knots->Array1(), &mults->Array1(),
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P, V1);
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}
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}
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//=======================================================================
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//function : D2
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::D2(const Standard_Real U,
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gp_Pnt2d& P,
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gp_Vec2d& V1,
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gp_Vec2d& V2) const
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{
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Standard_Integer aSpanIndex = 0;
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Standard_Real aNewU(U);
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PeriodicNormalization(aNewU);
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BSplCLib::LocateParameter(deg, knots->Array1(), &mults->Array1(), U, periodic, aSpanIndex, aNewU);
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if (aNewU < knots->Value(aSpanIndex))
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aSpanIndex--;
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if (rational)
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{
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BSplCLib::D2(aNewU,aSpanIndex,deg,periodic,POLES,
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&weights->Array1(),
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knots->Array1(), &mults->Array1(),
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P, V1, V2);
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}
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else
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{
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BSplCLib::D2(aNewU,aSpanIndex,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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knots->Array1(), &mults->Array1(),
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P, V1, V2);
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}
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}
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//=======================================================================
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//function : D3
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::D3(const Standard_Real U,
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gp_Pnt2d& P,
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gp_Vec2d& V1,
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gp_Vec2d& V2,
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gp_Vec2d& V3) const
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{
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Standard_Integer aSpanIndex = 0;
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Standard_Real aNewU(U);
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PeriodicNormalization(aNewU);
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BSplCLib::LocateParameter(deg, knots->Array1(), &mults->Array1(), U, periodic, aSpanIndex, aNewU);
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if (aNewU < knots->Value(aSpanIndex))
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aSpanIndex--;
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if (rational)
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{
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BSplCLib::D3(aNewU,aSpanIndex,deg,periodic,POLES,
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&weights->Array1(),
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knots->Array1(), &mults->Array1(),
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P, V1, V2, V3);
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}
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else
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{
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BSplCLib::D3(aNewU,aSpanIndex,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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knots->Array1(), &mults->Array1(),
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P, V1, V2, V3);
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}
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}
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//=======================================================================
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//function : DN
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//purpose :
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//=======================================================================
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gp_Vec2d Geom2d_BSplineCurve::DN(const Standard_Real U,
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const Standard_Integer N) const
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{
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gp_Vec2d V;
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if ( rational ) {
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BSplCLib::DN(U,N,0,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS, V);
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}
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else {
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BSplCLib::DN(U,N,0,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,V);
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}
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return V;
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}
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//=======================================================================
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//function : EndPoint
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//purpose :
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//=======================================================================
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gp_Pnt2d Geom2d_BSplineCurve::EndPoint () const
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{
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if (mults->Value (knots->Upper ()) == deg + 1)
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return poles->Value (poles->Upper());
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else
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return Value(LastParameter());
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}
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//=======================================================================
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//function : FirstUKnotIndex
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//purpose :
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//=======================================================================
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Standard_Integer Geom2d_BSplineCurve::FirstUKnotIndex () const
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{
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if (periodic) return 1;
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else return BSplCLib::FirstUKnotIndex (deg, mults->Array1());
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}
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//=======================================================================
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//function : FirstParameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_BSplineCurve::FirstParameter () const
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{
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return flatknots->Value (deg+1);
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}
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//=======================================================================
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//function : Knot
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_BSplineCurve::Knot (const Standard_Integer Index) const
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{
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Standard_OutOfRange_Raise_if
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(Index < 1 || Index > knots->Length(), "Geom2d_BSplineCurve::Knot");
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return knots->Value (Index);
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}
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//=======================================================================
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//function : KnotDistribution
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//purpose :
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//=======================================================================
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GeomAbs_BSplKnotDistribution Geom2d_BSplineCurve::KnotDistribution () const
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{
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return knotSet;
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}
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//=======================================================================
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//function : Knots
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::Knots (TColStd_Array1OfReal& K) const
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{
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Standard_DomainError_Raise_if (K.Lower() < knots->Lower() ||
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K.Upper() > knots->Upper(),
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"Geom2d_BSplineCurve::Knots");
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for(Standard_Integer anIdx = K.Lower(); anIdx <= K.Upper(); anIdx++)
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K(anIdx) = knots->Value(anIdx);
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}
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const TColStd_Array1OfReal& Geom2d_BSplineCurve::Knots() const
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{
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return knots->Array1();
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}
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//=======================================================================
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//function : KnotSequence
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::KnotSequence (TColStd_Array1OfReal& K) const
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{
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Standard_DomainError_Raise_if (K.Lower() < flatknots->Lower() ||
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K.Upper() > flatknots->Upper(),
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"Geom2d_BSplineCurve::KnotSequence");
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for(Standard_Integer anIdx = K.Lower(); anIdx <= K.Upper(); anIdx++)
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K(anIdx) = flatknots->Value(anIdx);
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}
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const TColStd_Array1OfReal& Geom2d_BSplineCurve::KnotSequence() const
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{
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return flatknots->Array1();
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}
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//=======================================================================
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//function : LastUKnotIndex
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//purpose :
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//=======================================================================
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Standard_Integer Geom2d_BSplineCurve::LastUKnotIndex() const
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{
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if (periodic) return knots->Length();
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else return BSplCLib::LastUKnotIndex (deg, mults->Array1());
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}
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//=======================================================================
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//function : LastParameter
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//purpose :
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//=======================================================================
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Standard_Real Geom2d_BSplineCurve::LastParameter () const
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{
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return flatknots->Value (flatknots->Upper()-deg);
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}
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//=======================================================================
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//function : LocalValue
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//purpose :
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//=======================================================================
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gp_Pnt2d Geom2d_BSplineCurve::LocalValue
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(const Standard_Real U,
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const Standard_Integer FromK1,
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const Standard_Integer ToK2) const
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{
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gp_Pnt2d P;
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LocalD0(U,FromK1,ToK2,P);
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return P;
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}
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//=======================================================================
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//function : LocalD0
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::LocalD0
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(const Standard_Real U,
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const Standard_Integer FromK1,
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const Standard_Integer ToK2,
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gp_Pnt2d& P) const
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{
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Standard_DomainError_Raise_if (FromK1 == ToK2,
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"Geom2d_BSplineCurve::LocalValue");
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Standard_Real u = U;
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Standard_Integer index = 0;
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BSplCLib::LocateParameter(deg, FKNOTS, U, periodic,FromK1,ToK2, index,u);
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index = BSplCLib::FlatIndex(deg,index,mults->Array1(),periodic);
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if ( rational ) {
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BSplCLib::D0(u,index,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS,P);
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}
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else {
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BSplCLib::D0(u,index,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,P);
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}
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}
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//=======================================================================
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//function : LocalD1
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::LocalD1 (const Standard_Real U,
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const Standard_Integer FromK1,
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const Standard_Integer ToK2,
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gp_Pnt2d& P,
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gp_Vec2d& V1) const
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{
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Standard_DomainError_Raise_if (FromK1 == ToK2,
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"Geom2d_BSplineCurve::LocalD1");
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Standard_Real u = U;
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Standard_Integer index = 0;
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BSplCLib::LocateParameter(deg, FKNOTS, U, periodic, FromK1,ToK2, index, u);
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index = BSplCLib::FlatIndex(deg,index,mults->Array1(),periodic);
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if (rational) {
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BSplCLib::D1(u,index,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS,P,V1);
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}
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else {
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BSplCLib::D1(u,index,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,P,V1);
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}
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}
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//=======================================================================
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//function : LocalD2
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//purpose :
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//=======================================================================
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void Geom2d_BSplineCurve::LocalD2
|
|
(const Standard_Real U,
|
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const Standard_Integer FromK1,
|
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const Standard_Integer ToK2,
|
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gp_Pnt2d& P,
|
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gp_Vec2d& V1,
|
|
gp_Vec2d& V2) const
|
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{
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Standard_DomainError_Raise_if (FromK1 == ToK2,
|
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"Geom2d_BSplineCurve::LocalD2");
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Standard_Real u = U;
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Standard_Integer index = 0;
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BSplCLib::LocateParameter(deg, FKNOTS, U, periodic, FromK1,ToK2, index, u);
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index = BSplCLib::FlatIndex(deg,index,mults->Array1(),periodic);
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|
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if ( rational ) {
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BSplCLib::D2(u,index,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS,P,V1,V2);
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}
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else {
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BSplCLib::D2(u,index,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,P,V1,V2);
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}
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}
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//=======================================================================
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//function : LocalD3
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//purpose :
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//=======================================================================
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|
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void Geom2d_BSplineCurve::LocalD3
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(const Standard_Real U,
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const Standard_Integer FromK1,
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const Standard_Integer ToK2,
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gp_Pnt2d& P,
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gp_Vec2d& V1,
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gp_Vec2d& V2,
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gp_Vec2d& V3) const
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{
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Standard_DomainError_Raise_if (FromK1 == ToK2,
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"Geom2d_BSplineCurve::LocalD3");
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|
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Standard_Real u = U;
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Standard_Integer index = 0;
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BSplCLib::LocateParameter(deg, FKNOTS, U, periodic, FromK1,ToK2, index, u);
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index = BSplCLib::FlatIndex(deg,index,mults->Array1(),periodic);
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if ( rational ) {
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BSplCLib::D3(u,index,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS,P,V1,V2,V3);
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}
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else {
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BSplCLib::D3(u,index,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,P,V1,V2,V3);
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}
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}
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//=======================================================================
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//function : LocalDN
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//purpose :
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//=======================================================================
|
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gp_Vec2d Geom2d_BSplineCurve::LocalDN
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(const Standard_Real U,
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const Standard_Integer FromK1,
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const Standard_Integer ToK2,
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const Standard_Integer N ) const
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{
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Standard_DomainError_Raise_if (FromK1 == ToK2,
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"Geom2d_BSplineCurve::LocalD3");
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Standard_Real u = U;
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Standard_Integer index = 0;
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BSplCLib::LocateParameter(deg, FKNOTS, U, periodic, FromK1,ToK2, index, u);
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index = BSplCLib::FlatIndex(deg,index,mults->Array1(),periodic);
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gp_Vec2d V;
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if ( rational ) {
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BSplCLib::DN(u,N,index,deg,periodic,POLES,
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&weights->Array1(),
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FKNOTS,FMULTS,V);
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}
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else {
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BSplCLib::DN(u,N,index,deg,periodic,POLES,
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BSplCLib::NoWeights(),
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FKNOTS,FMULTS,V);
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}
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return V;
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}
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|
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//=======================================================================
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//function : Multiplicity
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//purpose :
|
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//=======================================================================
|
|
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Standard_Integer Geom2d_BSplineCurve::Multiplicity
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(const Standard_Integer Index) const
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{
|
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Standard_OutOfRange_Raise_if (Index < 1 || Index > mults->Length(),
|
|
"Geom2d_BSplineCurve::Multiplicity");
|
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return mults->Value (Index);
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}
|
|
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//=======================================================================
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//function : Multiplicities
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//purpose :
|
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//=======================================================================
|
|
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void Geom2d_BSplineCurve::Multiplicities (TColStd_Array1OfInteger& M) const
|
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{
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Standard_DimensionError_Raise_if (M.Length() != mults->Length(),
|
|
"Geom2d_BSplineCurve::Multiplicities");
|
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M = mults->Array1();
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}
|
|
|
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const TColStd_Array1OfInteger& Geom2d_BSplineCurve::Multiplicities() const
|
|
{
|
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return mults->Array1();
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}
|
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|
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//=======================================================================
|
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//function : NbKnots
|
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//purpose :
|
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//=======================================================================
|
|
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Standard_Integer Geom2d_BSplineCurve::NbKnots () const
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{ return knots->Length(); }
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|
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//=======================================================================
|
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//function : NbPoles
|
|
//purpose :
|
|
//=======================================================================
|
|
|
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Standard_Integer Geom2d_BSplineCurve::NbPoles () const
|
|
{ return poles->Length(); }
|
|
|
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//=======================================================================
|
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//function : Pole
|
|
//purpose :
|
|
//=======================================================================
|
|
|
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gp_Pnt2d Geom2d_BSplineCurve::Pole (const Standard_Integer Index) const
|
|
{
|
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Standard_OutOfRange_Raise_if (Index < 1 || Index > poles->Length(),
|
|
"Geom2d_BSplineCurve::Pole");
|
|
return poles->Value (Index);
|
|
}
|
|
|
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//=======================================================================
|
|
//function : Poles
|
|
//purpose :
|
|
//=======================================================================
|
|
|
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void Geom2d_BSplineCurve::Poles (TColgp_Array1OfPnt2d& P) const
|
|
{
|
|
Standard_DimensionError_Raise_if (P.Length() != poles->Length(),
|
|
"Geom2d_BSplineCurve::Poles");
|
|
P = poles->Array1();
|
|
}
|
|
|
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const TColgp_Array1OfPnt2d& Geom2d_BSplineCurve::Poles() const
|
|
{
|
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return poles->Array1();
|
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}
|
|
|
|
//=======================================================================
|
|
//function : StartPoint
|
|
//purpose :
|
|
//=======================================================================
|
|
|
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gp_Pnt2d Geom2d_BSplineCurve::StartPoint () const
|
|
{
|
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if (mults->Value (1) == deg + 1)
|
|
return poles->Value (1);
|
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else
|
|
return Value(FirstParameter());
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : Weight
|
|
//purpose :
|
|
//=======================================================================
|
|
|
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Standard_Real Geom2d_BSplineCurve::Weight
|
|
(const Standard_Integer Index) const
|
|
{
|
|
Standard_OutOfRange_Raise_if (Index < 1 || Index > poles->Length(),
|
|
"Geom2d_BSplineCurve::Weight");
|
|
if (IsRational())
|
|
return weights->Value (Index);
|
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else
|
|
return 1.;
|
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}
|
|
|
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//=======================================================================
|
|
//function : Weights
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
void Geom2d_BSplineCurve::Weights
|
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(TColStd_Array1OfReal& W) const
|
|
{
|
|
Standard_DimensionError_Raise_if (W.Length() != poles->Length(),
|
|
"Geom2d_BSplineCurve::Weights");
|
|
if (IsRational())
|
|
W = weights->Array1();
|
|
else {
|
|
Standard_Integer i;
|
|
for (i = W.Lower(); i <= W.Upper(); i++)
|
|
W(i) = 1.;
|
|
}
|
|
}
|
|
|
|
const TColStd_Array1OfReal* Geom2d_BSplineCurve::Weights() const
|
|
{
|
|
if (IsRational())
|
|
return &weights->Array1();
|
|
return BSplCLib::NoWeights();
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : IsRational
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
Standard_Boolean Geom2d_BSplineCurve::IsRational () const
|
|
{
|
|
return !weights.IsNull();
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : Transform
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
void Geom2d_BSplineCurve::Transform
|
|
(const gp_Trsf2d& T)
|
|
{
|
|
TColgp_Array1OfPnt2d & CPoles = poles->ChangeArray1();
|
|
for (Standard_Integer I = 1; I <= CPoles.Length(); I++)
|
|
CPoles (I).Transform (T);
|
|
|
|
// maxderivinvok = 0;
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : LocateU
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
void Geom2d_BSplineCurve::LocateU
|
|
(const Standard_Real U,
|
|
const Standard_Real ParametricTolerance,
|
|
Standard_Integer& I1,
|
|
Standard_Integer& I2,
|
|
const Standard_Boolean WithKnotRepetition) const
|
|
{
|
|
Standard_Real NewU = U;
|
|
Handle(TColStd_HArray1OfReal) TheKnots;
|
|
if (WithKnotRepetition) TheKnots = flatknots;
|
|
else TheKnots = knots;
|
|
|
|
const TColStd_Array1OfReal & CKnots = TheKnots->Array1();
|
|
|
|
PeriodicNormalization(NewU); //Attention a la periode
|
|
Standard_Real UFirst = CKnots (1);
|
|
Standard_Real ULast = CKnots (CKnots.Length());
|
|
Standard_Real PParametricTolerance = Abs(ParametricTolerance);
|
|
if (Abs (NewU - UFirst) <= PParametricTolerance) { I1 = I2 = 1; }
|
|
else if (Abs (NewU - ULast) <= PParametricTolerance) {
|
|
I1 = I2 = CKnots.Length();
|
|
}
|
|
else if (NewU < UFirst) {
|
|
I2 = 1;
|
|
I1 = 0;
|
|
}
|
|
else if (NewU > ULast) {
|
|
I1 = CKnots.Length();
|
|
I2 = I1 + 1;
|
|
}
|
|
else {
|
|
I1 = 1;
|
|
BSplCLib::Hunt (CKnots, NewU, I1);
|
|
while ( Abs( CKnots(I1+1) - NewU) <= PParametricTolerance) I1++;
|
|
if ( Abs( CKnots(I1) - NewU) <= PParametricTolerance) {
|
|
I2 = I1;
|
|
}
|
|
else {
|
|
I2 = I1 + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
//=======================================================================
|
|
//function : Resolution
|
|
//purpose :
|
|
//=======================================================================
|
|
|
|
void Geom2d_BSplineCurve::Resolution(const Standard_Real ToleranceUV,
|
|
Standard_Real & UTolerance)
|
|
{
|
|
Standard_Integer ii ;
|
|
if(!maxderivinvok){
|
|
if ( periodic) {
|
|
Standard_Integer NbKnots, NbPoles;
|
|
BSplCLib::PrepareUnperiodize( deg,
|
|
mults->Array1(),
|
|
NbKnots,
|
|
NbPoles);
|
|
TColgp_Array1OfPnt2d new_poles(1,NbPoles) ;
|
|
TColStd_Array1OfReal new_weights(1,NbPoles) ;
|
|
for(ii = 1 ; ii <= NbPoles ; ii++) {
|
|
new_poles(ii) = poles->Array1()(((ii-1) % poles->Length()) + 1) ;
|
|
}
|
|
if (rational) {
|
|
for(ii = 1 ; ii <= NbPoles ; ii++) {
|
|
new_weights(ii) = weights->Array1()(((ii-1) % poles->Length()) + 1) ;
|
|
}
|
|
BSplCLib::Resolution(new_poles,
|
|
&new_weights,
|
|
new_poles.Length(),
|
|
flatknots->Array1(),
|
|
deg,
|
|
1.,
|
|
maxderivinv) ;
|
|
}
|
|
else {
|
|
BSplCLib::Resolution(new_poles,
|
|
BSplCLib::NoWeights(),
|
|
new_poles.Length(),
|
|
flatknots->Array1(),
|
|
deg,
|
|
1.,
|
|
maxderivinv) ;
|
|
}
|
|
}
|
|
else {
|
|
if (rational) {
|
|
BSplCLib::Resolution(poles->Array1(),
|
|
&weights->Array1(),
|
|
poles->Length(),
|
|
flatknots->Array1(),
|
|
deg,
|
|
1.,
|
|
maxderivinv) ;
|
|
}
|
|
else {
|
|
BSplCLib::Resolution(poles->Array1(),
|
|
BSplCLib::NoWeights(),
|
|
poles->Length(),
|
|
flatknots->Array1(),
|
|
deg,
|
|
1.,
|
|
maxderivinv) ;
|
|
}
|
|
}
|
|
maxderivinvok = 1;
|
|
}
|
|
UTolerance = ToleranceUV * maxderivinv;
|
|
}
|
|
|