// Created on: 1995-01-27
// Created by: Jacques GOUSSARD
// Copyright (c) 1995-1999 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 License 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.

#ifndef _GeomInt_WLApprox_HeaderFile
#define _GeomInt_WLApprox_HeaderFile

#include <Adaptor3d_Surface.hxx>
#include <NCollection_Vector.hxx>
#include <GeomInt_TheComputeLineOfWLApprox.hxx>
#include <GeomInt_TheComputeLineBezierOfWLApprox.hxx>
#include <Approx_MCurvesToBSpCurve.hxx>
#include <Approx_ParametrizationType.hxx>

class Adaptor3d_HSurfaceTool;
class IntSurf_Quadric;
class IntSurf_QuadricTool;
class IntPatch_WLine;
class GeomInt_ThePrmPrmSvSurfacesOfWLApprox;
class GeomInt_TheInt2SOfThePrmPrmSvSurfacesOfWLApprox;
class GeomInt_TheImpPrmSvSurfacesOfWLApprox;
class GeomInt_TheZerImpFuncOfTheImpPrmSvSurfacesOfWLApprox;
class GeomInt_TheMultiLineOfWLApprox;
class GeomInt_TheMultiLineToolOfWLApprox;
class GeomInt_TheComputeLineOfWLApprox;
class GeomInt_MyBSplGradientOfTheComputeLineOfWLApprox;
class GeomInt_MyGradientbisOfTheComputeLineOfWLApprox;
class GeomInt_TheComputeLineBezierOfWLApprox;
class GeomInt_MyGradientOfTheComputeLineBezierOfWLApprox;
class AppParCurves_MultiBSpCurve;

class GeomInt_WLApprox 
{
private:
  struct Approx_Data 
  {
    Approx_Data () : myBezierApprox (Standard_True),
      Xo (0.0), Yo (0.0), Zo (0.0),
      U1o (0.0), V1o (0.0), U2o (0.0), V2o (0.0),
      ApproxXYZ (Standard_True),
      ApproxU1V1 (Standard_True),
      ApproxU2V2 (Standard_True),
      indicemin (0), indicemax (0),
      myNbPntMax (30), parametrization (Approx_ChordLength)
    {
    }

    Standard_Boolean myBezierApprox;
    Standard_Real  Xo, Yo, Zo, U1o, V1o, U2o, V2o;
    Standard_Boolean ApproxXYZ, ApproxU1V1, ApproxU2V2;
    Standard_Integer indicemin, indicemax, myNbPntMax;
    Approx_ParametrizationType parametrization;
  };

public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT GeomInt_WLApprox();
  
  Standard_EXPORT void Perform (const Handle(Adaptor3d_Surface)& Surf1, const Handle(Adaptor3d_Surface)& Surf2, const Handle(IntPatch_WLine)& aLine, const Standard_Boolean ApproxXYZ = Standard_True, const Standard_Boolean ApproxU1V1 = Standard_True, const Standard_Boolean ApproxU2V2 = Standard_True, const Standard_Integer indicemin = 0, const Standard_Integer indicemax = 0);
  
  Standard_EXPORT void Perform (const Handle(IntPatch_WLine)& aLine, const Standard_Boolean ApproxXYZ = Standard_True, const Standard_Boolean ApproxU1V1 = Standard_True, const Standard_Boolean ApproxU2V2 = Standard_True, const Standard_Integer indicemin = 0, const Standard_Integer indicemax = 0);
  
  Standard_EXPORT 
      void SetParameters (const Standard_Real Tol3d, const Standard_Real Tol2d,
                          const Standard_Integer DegMin, 
                          const Standard_Integer DegMax,
                          const Standard_Integer NbIterMax,
                          const Standard_Integer NbPntMax = 30,
                          const Standard_Boolean ApproxWithTangency = Standard_True,
                          const Approx_ParametrizationType
                                          Parametrization = Approx_ChordLength);  
  Standard_EXPORT void Perform();
  
  Standard_EXPORT Standard_Real TolReached3d() const;
  
  Standard_EXPORT Standard_Real TolReached2d() const;
  
  Standard_EXPORT Standard_Boolean IsDone() const;
  
  Standard_EXPORT Standard_Integer NbMultiCurves() const;
  
  Standard_EXPORT const AppParCurves_MultiBSpCurve& Value (const Standard_Integer Index) const;




protected:





private:
  Standard_EXPORT void Perform (const IntSurf_Quadric& Surf1, const Handle(Adaptor3d_Surface)& Surf2, const Handle(IntPatch_WLine)& aLine, const Standard_Boolean ApproxXYZ, const Standard_Boolean ApproxU1V1, const Standard_Boolean ApproxU2V2, const Standard_Integer indicemin, const Standard_Integer indicemax, const Standard_Boolean isTheQuadFirst);
  
  Standard_EXPORT void UpdateTolReached();

  //! Fill data structure for intersection approximation.
  Standard_EXPORT void fillData(const Handle(IntPatch_WLine)& theLine);

  //! Prepare data structure for further computations.
  Standard_EXPORT void prepareDS(const Standard_Boolean theApproxXYZ,
                                 const Standard_Boolean theApproxU1V1,
                                 const Standard_Boolean theApproxU2V2,
                                 const Standard_Integer indicemin,
                                 const Standard_Integer indicemax);

  //! Build knot sequence.
  Standard_EXPORT void buildKnots(const Handle(IntPatch_WLine)& theline,
                                  const Standard_Address thePtrSVSurf);

  //! Build curve.
  Standard_EXPORT void buildCurve(const Handle(IntPatch_WLine)& theline,
                                  const Standard_Address thePtrSVSurf);

  GeomInt_TheComputeLineOfWLApprox myComputeLine;
  GeomInt_TheComputeLineBezierOfWLApprox myComputeLineBezier;
  Approx_MCurvesToBSpCurve myBezToBSpl;
  Standard_Boolean myWithTangency;
  Standard_Real myTol3d;
  Standard_Real myTol2d;
  Standard_Integer myDegMin;
  Standard_Integer myDegMax;
  Standard_Integer myNbIterMax;
  Standard_Real myTolReached3d;
  Standard_Real myTolReached2d;
  Approx_Data myData;
  NCollection_Vector<Standard_Integer> myKnots;

};







#endif // _GeomInt_WLApprox_HeaderFile