// 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_BlendTool_HeaderFile
#define _BRepBlend_BlendTool_HeaderFile

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

#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
class gp_Pnt2d;
class Adaptor3d_HSurface;
class Adaptor2d_HCurve2d;
class Adaptor3d_HVertex;



class BRepBlend_BlendTool 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! 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, Dist is the distance between
  //! P and the curve..
  //! If the method returns Standard_False, Param proj and Dist
  //! are not significant.
  Standard_EXPORT static Standard_Boolean Project (const gp_Pnt2d& P, const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor2d_HCurve2d)& C, Standard_Real& Paramproj, Standard_Real& Dist);
  
  Standard_EXPORT static Standard_Boolean Inters (const gp_Pnt2d& P1, const gp_Pnt2d& P2, const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor2d_HCurve2d)& C, Standard_Real& Param, Standard_Real& Dist);
  
  //! Returns the parameter of the vertex V on the edge A.
    static Standard_Real Parameter (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_HCurve2d)& A);
  
  //! Returns the parametric tolerance on the arc A
  //! used to consider that the vertex and another point meet,
  //! i-e if Abs(Parameter(Vertex)-Parameter(OtherPnt))<=
  //! Tolerance, the points are "merged".
    static Standard_Real Tolerance (const Handle(Adaptor3d_HVertex)& V, const Handle(Adaptor2d_HCurve2d)& A);
  
    static Standard_Boolean SingularOnUMin (const Handle(Adaptor3d_HSurface)& S);
  
    static Standard_Boolean SingularOnUMax (const Handle(Adaptor3d_HSurface)& S);
  
    static Standard_Boolean SingularOnVMin (const Handle(Adaptor3d_HSurface)& S);
  
    static Standard_Boolean SingularOnVMax (const Handle(Adaptor3d_HSurface)& S);
  
  Standard_EXPORT static Standard_Integer NbSamplesU (const Handle(Adaptor3d_HSurface)& S, const Standard_Real u1, const Standard_Real u2);
  
  Standard_EXPORT static Standard_Integer NbSamplesV (const Handle(Adaptor3d_HSurface)& S, const Standard_Real v1, const Standard_Real v2);
  
  //! 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_HCurve2d)& C, Standard_Real& Ufirst, Standard_Real& Ulast);
  
    static Handle(Adaptor2d_HCurve2d) CurveOnSurf (const Handle(Adaptor2d_HCurve2d)& C, const Handle(Adaptor3d_HSurface)& S);




protected:





private:





};


#include <BRepBlend_BlendTool.lxx>





#endif // _BRepBlend_BlendTool_HeaderFile
