// Created on: 1992-04-27
// Created by: Laurent BUCHARD
// Copyright (c) 1992-1999 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 _IntRes2d_Intersection_HeaderFile
#define _IntRes2d_Intersection_HeaderFile

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

#include <Standard_Boolean.hxx>
#include <IntRes2d_SequenceOfIntersectionPoint.hxx>
#include <IntRes2d_SequenceOfIntersectionSegment.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Real.hxx>
class IntRes2d_IntersectionPoint;
class IntRes2d_IntersectionSegment;


//! Defines  the root   class  of  all  the  Intersections
//! between  two 2D-Curves, and  provides all  the methods
//! about the results of the Intersections Algorithms.
class IntRes2d_Intersection 
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! returns TRUE when the computation was successful.
    Standard_Boolean IsDone() const;
  
  //! Returns TRUE if there is no intersection between the
  //! given arguments.
  //! The exception NotDone is raised if IsDone returns FALSE.
    Standard_Boolean IsEmpty() const;
  
  //! This function returns the number of intersection
  //! points between the 2 curves.
  //! The exception NotDone is raised if IsDone returns FALSE.
    Standard_Integer NbPoints() const;
  
  //! This function returns the intersection point
  //! of range N;
  //! The exception NotDone is raised if IsDone returns FALSE.
  //! The exception OutOfRange is raised if (N <= 0)
  //! or (N > NbPoints).
    const IntRes2d_IntersectionPoint& Point (const Standard_Integer N) const;
  
  //! This function returns the number of intersection
  //! segments between the two curves.
  //! The exception NotDone is raised if IsDone returns FALSE.
    Standard_Integer NbSegments() const;
  
  //! This function returns the intersection segment
  //! of range N;
  //! The exception NotDone is raised if IsDone returns FALSE.
  //! The exception OutOfRange is raised if (N <= 0)
  //! or (N > NbPoints).
    const IntRes2d_IntersectionSegment& Segment (const Standard_Integer N) const;
  
    void SetReversedParameters (const Standard_Boolean Reverseflag);




protected:

  
  //! Empty constructor.
    IntRes2d_Intersection();
  
    IntRes2d_Intersection(const IntRes2d_Intersection& Other);

    //! Assignment
    IntRes2d_Intersection& operator= (const IntRes2d_Intersection& theOther)
    {
      done = theOther.done;
      reverse = theOther.reverse;
      lpnt = theOther.lpnt;
      lseg = theOther.lseg;
      return *this;
    }

  //! Destructor is protected, for safe inheritance
  ~IntRes2d_Intersection () {}
  
  Standard_EXPORT void SetValues (const IntRes2d_Intersection& Inter);
  
  Standard_EXPORT void Append (const IntRes2d_Intersection& Inter, const Standard_Real FirstParam1, const Standard_Real LastParam1, const Standard_Real FirstParam2, const Standard_Real LastParam2);
  
    void Append (const IntRes2d_IntersectionSegment& Seg);
  
    void Append (const IntRes2d_IntersectionPoint& Pnt);
  
  Standard_EXPORT void Insert (const IntRes2d_IntersectionPoint& Pnt);
  
    void ResetFields();
  
    Standard_Boolean ReversedParameters() const;

protected:

  IntRes2d_SequenceOfIntersectionPoint lpnt;
  IntRes2d_SequenceOfIntersectionSegment lseg;
  Standard_Boolean done;
  Standard_Boolean reverse;

};


#include <IntRes2d_Intersection.lxx>





#endif // _IntRes2d_Intersection_HeaderFile