// Created on: 1995-07-02
// Created by: Laurent BUCHARD
// 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 _IntPatch_HInterTool_HeaderFile
#define _IntPatch_HInterTool_HeaderFile

#include <Adaptor2d_Curve2d.hxx>
#include <Adaptor3d_Surface.hxx>

class gp_Pnt2d;
class Adaptor3d_HVertex;
class gp_Pnt;

//! Tool for the intersection between 2 surfaces.
//! Regroupe pour l instant les methodes hors Adaptor3d...
class IntPatch_HInterTool 
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT IntPatch_HInterTool();
  
    static Standard_Boolean SingularOnUMin (const Handle(Adaptor3d_Surface)& S);
  
    static Standard_Boolean SingularOnUMax (const Handle(Adaptor3d_Surface)& S);
  
    static Standard_Boolean SingularOnVMin (const Handle(Adaptor3d_Surface)& S);
  
    static Standard_Boolean SingularOnVMax (const Handle(Adaptor3d_Surface)& S);
  
  Standard_EXPORT static Standard_Integer NbSamplesU (const Handle(Adaptor3d_Surface)& S, const Standard_Real u1, const Standard_Real u2);
  
  Standard_EXPORT static Standard_Integer NbSamplesV (const Handle(Adaptor3d_Surface)& S, const Standard_Real v1, const Standard_Real v2);
  
  Standard_EXPORT Standard_Integer NbSamplePoints (const Handle(Adaptor3d_Surface)& S);
  
  Standard_EXPORT void SamplePoint (const Handle(Adaptor3d_Surface)& S, const Standard_Integer Index, Standard_Real& U, Standard_Real& V) const;
  
  //! Returns True if all the intersection point and edges
  //! are known on the Arc.
  //! The intersection point are given as vertices.
  //! The intersection edges are given as intervals between
  //! two vertices.
  Standard_EXPORT static Standard_Boolean HasBeenSeen (const Handle(Adaptor2d_Curve2d)& C);
  
  //! returns the number of points which is used to make
  //! a sample on the arc. this number is a function of
  //! the Surface and the CurveOnSurface complexity.
  Standard_EXPORT static Standard_Integer NbSamplesOnArc (const Handle(Adaptor2d_Curve2d)& A);
  
  //! Returns the parametric limits on the arc C.
  //! These limits must be finite : they are either
  //! the real limits of the arc, for a finite arc,
  //! or a bounding box for an infinite arc.
  Standard_EXPORT static void Bounds (const Handle(Adaptor2d_Curve2d)& C, Standard_Real& Ufirst, Standard_Real& Ulast);
  
  //! Projects the point P on the arc C.
  //! If the methods returns Standard_True, the projection is
  //! successful, and Paramproj is the parameter on the arc
  //! of the projected point, Ptproj is the projected Point.
  //! If the method returns Standard_False, Param proj and Ptproj
  //! are not significant.
  Standard_EXPORT static Standard_Boolean Project (const Handle(Adaptor2d_Curve2d)& C, const gp_Pnt2d& P, Standard_Real& Paramproj, gp_Pnt2d& Ptproj);
  
  //! Returns the parametric tolerance used to consider
  //! that the vertex and another point meet, i-e
  //! if Abs(parameter(Vertex) - parameter(OtherPnt))<=
  //! Tolerance, the points are "merged".
  Standard_EXPORT static Standard_Real Tolerance (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_Curve2d)& C);
  
  //! Returns the parameter of the vertex V on the arc A.
  Standard_EXPORT static Standard_Real Parameter (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_Curve2d)& C);
  
  //! Returns the number of intersection points on the arc A.
  Standard_EXPORT static Standard_Integer NbPoints (const Handle(Adaptor2d_Curve2d)& C);
  
  //! Returns the value (Pt), the tolerance (Tol), and
  //! the parameter (U) on the arc A , of the intersection
  //! point of range Index.
  Standard_EXPORT static void Value (const Handle(Adaptor2d_Curve2d)& C, const Standard_Integer Index, gp_Pnt& Pt, Standard_Real& Tol, Standard_Real& U);
  
  //! Returns True if the intersection point of range Index
  //! corresponds with a vertex on the arc A.
  Standard_EXPORT static Standard_Boolean IsVertex (const Handle(Adaptor2d_Curve2d)& C, const Standard_Integer Index);
  
  //! When IsVertex returns True, this method returns the
  //! vertex on the arc A.
  Standard_EXPORT static void Vertex (const Handle(Adaptor2d_Curve2d)& C, const Standard_Integer Index, Handle(Adaptor3d_HVertex)& V);
  
  //! returns the number of part of A solution of the
  //! of intersection problem.
  Standard_EXPORT static Standard_Integer NbSegments (const Handle(Adaptor2d_Curve2d)& C);
  
  //! Returns True when the segment of range Index is not
  //! open at the left side. In that case, IndFirst is the
  //! range in the list intersection points (see NbPoints)
  //! of the one which defines the left bound of the segment.
  //! Otherwise, the method has to return False, and IndFirst
  //! has no meaning.
  Standard_EXPORT static Standard_Boolean HasFirstPoint (const Handle(Adaptor2d_Curve2d)& C, const Standard_Integer Index, Standard_Integer& IndFirst);
  
  //! Returns True when the segment of range Index is not
  //! open at the right side. In that case, IndLast is the
  //! range in the list intersection points (see NbPoints)
  //! of the one which defines the right bound of the segment.
  //! Otherwise, the method has to return False, and IndLast
  //! has no meaning.
  Standard_EXPORT static Standard_Boolean HasLastPoint (const Handle(Adaptor2d_Curve2d)& C, const Standard_Integer Index, Standard_Integer& IndLast);
  
  //! Returns True when the whole restriction is solution
  //! of the intersection problem.
  Standard_EXPORT static Standard_Boolean IsAllSolution (const Handle(Adaptor2d_Curve2d)& C);




protected:





private:



  Standard_Real uinf;
  Standard_Real vinf;
  Standard_Real usup;
  Standard_Real vsup;


};


#include <IntPatch_HInterTool.lxx>





#endif // _IntPatch_HInterTool_HeaderFile