// 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_IntersectionPoint.hxx"
#include "NCollection_Sequence.hxx"
#include "IntRes2d_IntersectionSegment.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.
  bool IsDone() const;

  //! Returns TRUE if there is no intersection between the
  //! given arguments.
  //! The exception NotDone is raised if IsDone returns FALSE.
  bool IsEmpty() const;

  //! This function returns the number of intersection
  //! points between the 2 curves.
  //! The exception NotDone is raised if IsDone returns FALSE.
  int 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 int N) const;

  //! This function returns the number of intersection
  //! segments between the two curves.
  //! The exception NotDone is raised if IsDone returns FALSE.
  int 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 int N) const;

  void SetReversedParameters(const bool Reverseflag);

protected:
  //! Empty constructor.
  IntRes2d_Intersection();

  IntRes2d_Intersection(const IntRes2d_Intersection& Other);

  //! Assignment
  IntRes2d_Intersection& operator=(const IntRes2d_Intersection& theOther) = default;

  //! Destructor is protected, for safe inheritance
  ~IntRes2d_Intersection() = default;

  Standard_EXPORT void SetValues(const IntRes2d_Intersection& Inter);

  Standard_EXPORT void Append(const IntRes2d_Intersection& Inter,
                              const double                 FirstParam1,
                              const double                 LastParam1,
                              const double                 FirstParam2,
                              const double                 LastParam2);

  void Append(const IntRes2d_IntersectionSegment& Seg);

  void Append(const IntRes2d_IntersectionPoint& Pnt);

  Standard_EXPORT void Insert(const IntRes2d_IntersectionPoint& Pnt);

  void ResetFields();

  bool ReversedParameters() const;

protected:
  NCollection_Sequence<IntRes2d_IntersectionPoint>   lpnt;
  NCollection_Sequence<IntRes2d_IntersectionSegment> lseg;
  bool                                               done;
  bool                                               reverse;
};

#include "IntRes2d_Intersection.lxx"

#endif // _IntRes2d_Intersection_HeaderFile