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973c2be1e1
The copying permission statements at the beginning of source files updated to refer to LGPL. Copyright dates extended till 2014 in advance.
254 lines
8.5 KiB
C++
254 lines
8.5 KiB
C++
// Created on: 1995-09-08
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// Created by: Laurent BOURESCHE
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// Copyright (c) 1995-1999 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
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// under the terms of the GNU Lesser General Public 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 <BSplCLib.hxx>
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#include <TColStd_Array1OfInteger.hxx>
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#include <TColStd_Array1OfReal.hxx>
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#define No_Standard_RangeError
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#define No_Standard_OutOfRange
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//=======================================================================
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//struct : BSplCLib_BezierArrays
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//purpose: Auxiliary structure providing standard definitions of bspline
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// knots for bezier (using stack allocation)
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//=======================================================================
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class BSplCLib_BezierArrays
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{
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public:
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BSplCLib_BezierArrays (Standard_Integer Degree)
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: knots (aKnots[0], 1, 2), mults (aMults[0], 1, 2)
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{
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aKnots[0] = 0.;
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aKnots[1] = 1.;
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aMults[0] = aMults[1] = Degree + 1;
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}
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private:
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Standard_Real aKnots[2];
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Standard_Integer aMults[2];
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public:
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TColStd_Array1OfReal knots;
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TColStd_Array1OfInteger mults;
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};
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//=======================================================================
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//function : IncreaseDegree
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//purpose :
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//=======================================================================
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void BSplCLib::IncreaseDegree(const Standard_Integer NewDegree,
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const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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TColgp_Array1OfPnt& NewPoles,
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TColStd_Array1OfReal& NewWeights)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::IncreaseDegree(deg, NewDegree, 0,
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Poles, Weights, bzarr.knots, bzarr.mults,
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NewPoles, NewWeights, bzarr.knots, bzarr.mults);
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}
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//=======================================================================
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//function : IncreaseDegree
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//purpose :
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//=======================================================================
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void BSplCLib::IncreaseDegree(const Standard_Integer NewDegree,
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const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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TColgp_Array1OfPnt2d& NewPoles,
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TColStd_Array1OfReal& NewWeights)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::IncreaseDegree(deg, NewDegree, 0,
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Poles, Weights, bzarr.knots, bzarr.mults,
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NewPoles, NewWeights, bzarr.knots, bzarr.mults);
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}
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//=======================================================================
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//function : PolesCoefficients
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//purpose :
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//=======================================================================
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void BSplCLib::PolesCoefficients(const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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TColgp_Array1OfPnt& CachePoles,
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TColStd_Array1OfReal& CacheWeights)
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{
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Standard_Integer deg = Poles.Length() - 1;
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TColStd_Array1OfReal bidflatknots (FlatBezierKnots(deg), 1, 2*(deg+1));
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BSplCLib::BuildCache(0.,1.,0,deg,bidflatknots,
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Poles, Weights, CachePoles,CacheWeights);
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}
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//=======================================================================
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//function : PolesCoefficients
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//purpose :
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//=======================================================================
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void BSplCLib::PolesCoefficients(const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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TColgp_Array1OfPnt2d& CachePoles,
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TColStd_Array1OfReal& CacheWeights)
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{
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Standard_Integer deg = Poles.Length() - 1;
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TColStd_Array1OfReal bidflatknots (FlatBezierKnots(deg), 1, 2*(deg+1));
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BSplCLib::BuildCache(0.,1.,0,deg,bidflatknots,
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Poles, Weights, CachePoles,CacheWeights);
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}
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//=======================================================================
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//function : D0
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//purpose :
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//=======================================================================
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void BSplCLib::D0(const Standard_Real U,
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const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt& P)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D0(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P);
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}
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//=======================================================================
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//function : D0
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//purpose :
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//=======================================================================
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void BSplCLib::D0(const Standard_Real U,
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const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt2d& P)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D0(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P);
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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 BSplCLib::D1(const Standard_Real U,
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const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt& P,
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gp_Vec& V)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D1(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P, V);
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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 BSplCLib::D1(const Standard_Real U,
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const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt2d& P,
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gp_Vec2d& V)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D1(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P, V);
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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 BSplCLib::D2(const Standard_Real U,
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const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt& P,
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gp_Vec& V1,
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gp_Vec& V2)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D2(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P, V1, V2);
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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 BSplCLib::D2(const Standard_Real U,
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const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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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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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D2(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults, P, V1, V2);
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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 BSplCLib::D3(const Standard_Real U,
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const TColgp_Array1OfPnt& Poles,
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const TColStd_Array1OfReal& Weights,
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gp_Pnt& P,
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gp_Vec& V1,
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gp_Vec& V2,
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gp_Vec& V3)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D3(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults,
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P, V1, V2, V3);
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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 BSplCLib::D3(const Standard_Real U,
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const TColgp_Array1OfPnt2d& Poles,
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const TColStd_Array1OfReal& Weights,
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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)
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{
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Standard_Integer deg = Poles.Length() - 1;
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BSplCLib_BezierArrays bzarr(deg);
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BSplCLib::D3(U, 1, deg, 0, Poles, Weights, bzarr.knots, bzarr.mults,
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P, V1, V2, V3);
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}
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