// Created on: 1993-11-08
// Created by: lbr
// Copyright (c) 1993-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and / or modify it
// under the terms of the GNU Lesser General Public version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

ApproxInt_WLine::ApproxInt_WLine(const TheCurve&    CurveXYZ,
				 const TheCurve2d&  CurveUV1,
				 const TheCurve2d&  CurveUV2) { 
  curvxyz = CurveXYZ;
  curvuv1 = CurveUV1;
  curvuv2 = CurveUV2;
}


ApproxInt_WLine::ApproxInt_WLine(const Handle(IntSurf_LineOn2S)& lin,
				 const Standard_Boolean )
     :linon2s(lin) 
{ 
}

Standard_Integer ApproxInt_WLine::NbPnts() const {
  if(!curvxyz.IsNull())
    return(curvxyz->NbPoles());
  if(!curvuv1.IsNull())
    return(curvuv1->NbPoles());
  if(!curvuv2.IsNull())
    return(curvuv2->NbPoles());
  return(linon2s->NbPoints());
}

IntSurf_PntOn2S ApproxInt_WLine::Point(const Standard_Integer Index) {
  if(!linon2s.IsNull()) { 
    if(linon2s->NbPoints()) { 
      return(linon2s->Value(Index));
    }
  }
  gp_Pnt2d P1,P2;
  gp_Pnt   P;
  if(!curvxyz.IsNull()) 
    P = curvxyz->Pole(Index);
  if(!curvuv1.IsNull())
    P1 = curvuv1->Pole(Index);
  if(!curvuv2.IsNull())
    P2 = curvuv2->Pole(Index);

  pnton2s.SetValue(P,
		   P1.X(),
		   P1.Y(),
		   P2.X(),
		   P2.Y());
  return(pnton2s);
}