// Created on: 1993-12-06
// Created by: Jacques GOUSSARD
// 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 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 _BRepBlend_AppSurf_HeaderFile
#define _BRepBlend_AppSurf_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Real.hxx>
#include <TColgp_HArray2OfPnt.hxx>
#include <TColStd_HArray2OfReal.hxx>
#include <TColStd_HArray1OfReal.hxx>
#include <TColStd_HArray1OfInteger.hxx>
#include <TColgp_SequenceOfArray1OfPnt2d.hxx>
#include <Approx_ParametrizationType.hxx>
#include <GeomAbs_Shape.hxx>
#include <AppBlend_Approx.hxx>
#include <TColgp_Array2OfPnt.hxx>
#include <TColStd_Array2OfReal.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColStd_Array1OfInteger.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
class StdFail_NotDone;
class Standard_DomainError;
class Standard_OutOfRange;
class Blend_AppFunction;
class BRepBlend_Line;

class BRepBlend_AppSurf : public AppBlend_Approx
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT BRepBlend_AppSurf();

  Standard_EXPORT BRepBlend_AppSurf(const Standard_Integer Degmin,
                                    const Standard_Integer Degmax,
                                    const Standard_Real    Tol3d,
                                    const Standard_Real    Tol2d,
                                    const Standard_Integer NbIt,
                                    const Standard_Boolean KnownParameters = Standard_False);

  Standard_EXPORT void Init(const Standard_Integer Degmin,
                            const Standard_Integer Degmax,
                            const Standard_Real    Tol3d,
                            const Standard_Real    Tol2d,
                            const Standard_Integer NbIt,
                            const Standard_Boolean KnownParameters = Standard_False);

  //! Define the type of parametrization used in the approximation
  Standard_EXPORT void SetParType(const Approx_ParametrizationType ParType);

  //! Define the Continuity used in the approximation
  Standard_EXPORT void SetContinuity(const GeomAbs_Shape C);

  //! define the Weights  associed to the criterium used in
  //! the  optimization.
  //!
  //! if Wi <= 0
  Standard_EXPORT void SetCriteriumWeight(const Standard_Real W1,
                                          const Standard_Real W2,
                                          const Standard_Real W3);

  //! returns the type of parametrization used in the approximation
  Standard_EXPORT Approx_ParametrizationType ParType() const;

  //! returns the Continuity used in the approximation
  Standard_EXPORT GeomAbs_Shape Continuity() const;

  //! returns the Weights (as percent) associed  to the criterium used in
  //! the  optimization.
  Standard_EXPORT void CriteriumWeight(Standard_Real& W1,
                                       Standard_Real& W2,
                                       Standard_Real& W3) const;

  Standard_EXPORT void Perform(const Handle(BRepBlend_Line)& Lin,
                               Blend_AppFunction&            SecGen,
                               const Standard_Boolean        SpApprox = Standard_False);

  Standard_EXPORT void PerformSmoothing(const Handle(BRepBlend_Line)& Lin,
                                        Blend_AppFunction&            SecGen);

  Standard_EXPORT void Perform(const Handle(BRepBlend_Line)& Lin,
                               Blend_AppFunction&            SecGen,
                               const Standard_Integer        NbMaxP);

  Standard_Boolean IsDone() const;

  Standard_EXPORT void SurfShape(Standard_Integer& UDegree,
                                 Standard_Integer& VDegree,
                                 Standard_Integer& NbUPoles,
                                 Standard_Integer& NbVPoles,
                                 Standard_Integer& NbUKnots,
                                 Standard_Integer& NbVKnots) const;

  Standard_EXPORT void Surface(TColgp_Array2OfPnt&      TPoles,
                               TColStd_Array2OfReal&    TWeights,
                               TColStd_Array1OfReal&    TUKnots,
                               TColStd_Array1OfReal&    TVKnots,
                               TColStd_Array1OfInteger& TUMults,
                               TColStd_Array1OfInteger& TVMults) const;

  Standard_Integer UDegree() const;

  Standard_Integer VDegree() const;

  const TColgp_Array2OfPnt& SurfPoles() const;

  const TColStd_Array2OfReal& SurfWeights() const;

  const TColStd_Array1OfReal& SurfUKnots() const;

  const TColStd_Array1OfReal& SurfVKnots() const;

  const TColStd_Array1OfInteger& SurfUMults() const;

  const TColStd_Array1OfInteger& SurfVMults() const;

  Standard_Integer NbCurves2d() const;

  Standard_EXPORT void Curves2dShape(Standard_Integer& Degree,
                                     Standard_Integer& NbPoles,
                                     Standard_Integer& NbKnots) const;

  Standard_EXPORT void Curve2d(const Standard_Integer   Index,
                               TColgp_Array1OfPnt2d&    TPoles,
                               TColStd_Array1OfReal&    TKnots,
                               TColStd_Array1OfInteger& TMults) const;

  Standard_Integer Curves2dDegree() const;

  const TColgp_Array1OfPnt2d& Curve2dPoles(const Standard_Integer Index) const;

  const TColStd_Array1OfReal& Curves2dKnots() const;

  const TColStd_Array1OfInteger& Curves2dMults() const;

  void TolReached(Standard_Real& Tol3d, Standard_Real& Tol2d) const;

  Standard_EXPORT Standard_Real TolCurveOnSurf(const Standard_Integer Index) const;

protected:
private:
  Standard_EXPORT void InternalPerform(const Handle(BRepBlend_Line)& Lin,
                                       Blend_AppFunction&            SecGen,
                                       const Standard_Boolean        SpApprox,
                                       const Standard_Boolean        UseVariational);

  Standard_Boolean                 done;
  Standard_Integer                 dmin;
  Standard_Integer                 dmax;
  Standard_Real                    tol3d;
  Standard_Real                    tol2d;
  Standard_Integer                 nbit;
  Standard_Integer                 udeg;
  Standard_Integer                 vdeg;
  Standard_Boolean                 knownp;
  Handle(TColgp_HArray2OfPnt)      tabPoles;
  Handle(TColStd_HArray2OfReal)    tabWeights;
  Handle(TColStd_HArray1OfReal)    tabUKnots;
  Handle(TColStd_HArray1OfReal)    tabVKnots;
  Handle(TColStd_HArray1OfInteger) tabUMults;
  Handle(TColStd_HArray1OfInteger) tabVMults;
  TColgp_SequenceOfArray1OfPnt2d   seqPoles2d;
  Standard_Real                    tol3dreached;
  Standard_Real                    tol2dreached;
  Approx_ParametrizationType       paramtype;
  GeomAbs_Shape                    continuity;
  Standard_Real                    critweights[3];
};

#define TheSectionGenerator Blend_AppFunction
#define TheSectionGenerator_hxx <Blend_AppFunction.hxx>
#define Handle_TheLine Handle(BRepBlend_Line)
#define TheLine BRepBlend_Line
#define TheLine_hxx <BRepBlend_Line.hxx>
#define AppBlend_AppSurf BRepBlend_AppSurf
#define AppBlend_AppSurf_hxx <BRepBlend_AppSurf.hxx>

#include <AppBlend_AppSurf.lxx>

#undef TheSectionGenerator
#undef TheSectionGenerator_hxx
#undef Handle_TheLine
#undef TheLine
#undef TheLine_hxx
#undef AppBlend_AppSurf
#undef AppBlend_AppSurf_hxx

#endif // _BRepBlend_AppSurf_HeaderFile
