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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.
205 lines
6.7 KiB
C++
205 lines
6.7 KiB
C++
// Created on: 1996-03-12
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// Created by: Bruno DUMORTIER
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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 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 <GeomConvert_BSplineSurfaceToBezierSurface.ixx>
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#include <TColgp_Array2OfPnt.hxx>
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#include <TColStd_Array2OfReal.hxx>
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//=======================================================================
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//function : GeomConvert_BSplineSurfaceToBezierSurface
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//purpose :
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//=======================================================================
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GeomConvert_BSplineSurfaceToBezierSurface::GeomConvert_BSplineSurfaceToBezierSurface(const Handle(Geom_BSplineSurface)& BasisSurface)
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{
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mySurface = Handle(Geom_BSplineSurface)::DownCast(BasisSurface->Copy());
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Standard_Real U1,U2,V1,V2;
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mySurface->Bounds(U1,U2,V1,V2);
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mySurface->Segment(U1,U2,V1,V2);
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mySurface->IncreaseUMultiplicity(mySurface->FirstUKnotIndex(),
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mySurface->LastUKnotIndex(),
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mySurface->UDegree());
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mySurface->IncreaseVMultiplicity(mySurface->FirstVKnotIndex(),
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mySurface->LastVKnotIndex(),
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mySurface->VDegree());
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}
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//=======================================================================
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//function : GeomConvert_BSplineSurfaceToBezierSurface
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//purpose :
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//=======================================================================
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GeomConvert_BSplineSurfaceToBezierSurface::GeomConvert_BSplineSurfaceToBezierSurface
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(const Handle(Geom_BSplineSurface)& BasisSurface,
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const Standard_Real U1,
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const Standard_Real U2,
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const Standard_Real V1,
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const Standard_Real V2,
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const Standard_Real ParametricTolerance)
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{
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if ( (U2 - U1 < ParametricTolerance) ||
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(V2 - V1 < ParametricTolerance) )
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Standard_DomainError::Raise("GeomConvert_BSplineSurfaceToBezierSurface");
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Standard_Real Uf=U1, Ul=U2, Vf=V1, Vl=V2, PTol = ParametricTolerance/2;
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Standard_Integer I1, I2;
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mySurface = Handle(Geom_BSplineSurface)::DownCast(BasisSurface->Copy());
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mySurface->LocateU(U1, PTol, I1, I2);
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if (I1==I2) { // On est sur le noeud
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if ( mySurface->UKnot(I1) > U1) Uf = mySurface->UKnot(I1);
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}
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mySurface->LocateU(U2, PTol, I1, I2);
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if (I1==I2) { // On est sur le noeud
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if ( mySurface->UKnot(I1) < U2) Ul = mySurface->UKnot(I1);
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}
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mySurface->LocateV(V1, PTol, I1, I2);
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if (I1==I2) { // On est sur le noeud
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if ( mySurface->VKnot(I1) > V1) Vf = mySurface->VKnot(I1);
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}
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mySurface->LocateV(V2, PTol, I1, I2);
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if (I1==I2) { // On est sur le noeud
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if ( mySurface->VKnot(I1) < V2) Vl = mySurface->VKnot(I1);
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}
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mySurface->Segment(Uf, Ul, Vf, Vl);
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mySurface->IncreaseUMultiplicity(mySurface->FirstUKnotIndex(),
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mySurface->LastUKnotIndex(),
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mySurface->UDegree());
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mySurface->IncreaseVMultiplicity(mySurface->FirstVKnotIndex(),
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mySurface->LastVKnotIndex(),
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mySurface->VDegree());
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}
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//=======================================================================
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//function : Patch
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//purpose :
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//=======================================================================
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Handle(Geom_BezierSurface) GeomConvert_BSplineSurfaceToBezierSurface::Patch
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(const Standard_Integer UIndex,
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const Standard_Integer VIndex)
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{
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if (UIndex < 1 || UIndex > mySurface->NbUKnots()-1 ||
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VIndex < 1 || VIndex > mySurface->NbVKnots()-1 ) {
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Standard_OutOfRange::Raise("GeomConvert_BSplineSurfaceToBezierSurface");
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}
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Standard_Integer UDeg = mySurface->UDegree();
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Standard_Integer VDeg = mySurface->VDegree();
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TColgp_Array2OfPnt Poles(1,UDeg+1,1,VDeg+1);
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Handle(Geom_BezierSurface) S;
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if ( mySurface->IsURational() || mySurface->IsVRational()) {
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TColStd_Array2OfReal Weights(1,UDeg+1,1,VDeg+1);
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for ( Standard_Integer i = 1; i <= UDeg+1; i++) {
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Standard_Integer CurI = i+UDeg*(UIndex-1);
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for ( Standard_Integer j = 1; j <= VDeg+1; j++) {
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Poles(i,j) = mySurface->Pole(CurI,j+VDeg*(VIndex-1));
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Weights(i,j) = mySurface->Weight(CurI,j+VDeg*(VIndex-1));
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}
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}
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S = new Geom_BezierSurface(Poles,Weights);
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}
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else {
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for ( Standard_Integer i = 1; i <= UDeg+1; i++) {
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Standard_Integer CurI = i+UDeg*(UIndex-1);
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for ( Standard_Integer j = 1; j <= VDeg+1; j++) {
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Poles(i,j) = mySurface->Pole(CurI,j+VDeg*(VIndex-1));
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}
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}
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S = new Geom_BezierSurface(Poles);
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}
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return S;
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}
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//=======================================================================
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//function : Patches
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//purpose :
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//=======================================================================
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void GeomConvert_BSplineSurfaceToBezierSurface::Patches
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(TColGeom_Array2OfBezierSurface& Surfaces)
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{
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Standard_Integer NbU = NbUPatches();
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Standard_Integer NbV = NbVPatches();
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for (Standard_Integer i = 1; i <= NbU; i++) {
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for (Standard_Integer j = 1; j <= NbV; j++) {
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Surfaces(i,j) = Patch(i,j);
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}
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}
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}
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//=======================================================================
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//function : UKnots
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//purpose :
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//=======================================================================
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void GeomConvert_BSplineSurfaceToBezierSurface::UKnots
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(TColStd_Array1OfReal& TKnots) const
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{
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Standard_Integer ii, kk;
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for (ii = 1, kk = TKnots.Lower();
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ii <= mySurface->NbUKnots(); ii++, kk++)
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TKnots(kk) = mySurface->UKnot(ii);
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}
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//=======================================================================
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//function : VKnots
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//purpose :
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//=======================================================================
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void GeomConvert_BSplineSurfaceToBezierSurface::VKnots
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(TColStd_Array1OfReal& TKnots) const
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{
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Standard_Integer ii, kk;
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for (ii = 1, kk = TKnots.Lower();
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ii <= mySurface->NbVKnots(); ii++, kk++)
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TKnots(kk) = mySurface->VKnot(ii);
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}
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//=======================================================================
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//function : NbUPatches
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//purpose :
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//=======================================================================
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Standard_Integer GeomConvert_BSplineSurfaceToBezierSurface::NbUPatches() const
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{
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return (mySurface->NbUKnots()-1);
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}
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//=======================================================================
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//function : NbVPatches
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//purpose :
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//=======================================================================
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Standard_Integer GeomConvert_BSplineSurfaceToBezierSurface::NbVPatches() const
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{
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return (mySurface->NbVKnots()-1);
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}
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