// Created on: 1993-04-07
// Created by: Laurent BUCHARD
// 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 _IntCurveSurface_TheExactHInter_HeaderFile
#define _IntCurveSurface_TheExactHInter_HeaderFile

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

#include <Standard_Boolean.hxx>
#include <IntCurveSurface_TheCSFunctionOfHInter.hxx>
#include <Standard_Real.hxx>
class StdFail_NotDone;
class Standard_DomainError;
class Adaptor3d_HSurface;
class Adaptor3d_HSurfaceTool;
class Adaptor3d_HCurve;
class IntCurveSurface_TheHCurveTool;
class IntCurveSurface_TheCSFunctionOfHInter;
class math_FunctionSetRoot;
class gp_Pnt;



class IntCurveSurface_TheExactHInter 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! compute the solution point with the close point
  //! MarginCoef is the coefficient for extension of UV bounds.
  //! Ex., UFirst -= MarginCoef*(ULast-UFirst)
  Standard_EXPORT IntCurveSurface_TheExactHInter(const Standard_Real U, const Standard_Real V, const Standard_Real W, const IntCurveSurface_TheCSFunctionOfHInter& F, const Standard_Real TolTangency, const Standard_Real MarginCoef = 0.0);
  
  //! initialize the parameters to compute the solution
  Standard_EXPORT IntCurveSurface_TheExactHInter(const IntCurveSurface_TheCSFunctionOfHInter& F, const Standard_Real TolTangency);
  
  //! compute the solution
  //! it's possible to write to optimize:
  //! IntImp_IntCS inter(S1,C1,Toltangency)
  //! math_FunctionSetRoot rsnld(Inter.function())
  //! while ...{
  //! u=...
  //! v=...
  //! w=...
  //! inter.Perform(u,v,w,rsnld)
  //! }
  //! or
  //! IntImp_IntCS inter(Toltangency)
  //! inter.SetSurface(S);
  //! math_FunctionSetRoot rsnld(Inter.function())
  //! while ...{
  //! C=...
  //! inter.SetCurve(C);
  //! u=...
  //! v=...
  //! w=...
  //! inter.Perform(u,v,w,rsnld)
  //! }
  Standard_EXPORT void Perform (const Standard_Real U, const Standard_Real V, const Standard_Real W, math_FunctionSetRoot& Rsnld, const Standard_Real u0, const Standard_Real v0, const Standard_Real u1, const Standard_Real v1, const Standard_Real w0, const Standard_Real w1);
  
  //! Returns TRUE if the creation completed without failure.
  Standard_EXPORT Standard_Boolean IsDone() const;
  
  Standard_EXPORT Standard_Boolean IsEmpty() const;
  
  //! returns the intersection point
  //! The exception NotDone is raised if IsDone is false.
  //! The exception DomainError is raised if IsEmpty is true.
  Standard_EXPORT const gp_Pnt& Point() const;
  
  Standard_EXPORT Standard_Real ParameterOnCurve() const;
  
  Standard_EXPORT void ParameterOnSurface (Standard_Real& U, Standard_Real& V) const;
  
  //! return the math function which
  //! is used to compute the intersection
  Standard_EXPORT IntCurveSurface_TheCSFunctionOfHInter& Function();




protected:





private:



  Standard_Boolean done;
  Standard_Boolean empty;
  IntCurveSurface_TheCSFunctionOfHInter myFunction;
  Standard_Real w;
  Standard_Real u;
  Standard_Real v;
  Standard_Real tol;


};







#endif // _IntCurveSurface_TheExactHInter_HeaderFile