// Created on: 1993-01-11
// Created by: Christophe MARION
// 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 _HLRAlgo_EdgeIterator_HeaderFile
#define _HLRAlgo_EdgeIterator_HeaderFile

#include "Standard.hxx"
#include "Standard_DefineAlloc.hxx"
#include "Standard_Handle.hxx"

class HLRAlgo_EdgeStatus;

class HLRAlgo_EdgeIterator
{
public:
  DEFINE_STANDARD_ALLOC

  //! Iterator on the visible or hidden parts of an edge.
  Standard_EXPORT HLRAlgo_EdgeIterator();

  Standard_EXPORT void InitHidden(HLRAlgo_EdgeStatus& status);

  bool MoreHidden() const;

  Standard_EXPORT void NextHidden();

  //! Returns the bounds and the tolerances
  //! of the current Hidden Interval
  void Hidden(double& Start, float& TolStart, double& End, float& TolEnd) const;

  void InitVisible(HLRAlgo_EdgeStatus& status);

  bool MoreVisible() const;

  void NextVisible();

  //! Returns the bounds and the tolerances
  //! of the current Visible Interval
  void Visible(double& Start, float& TolStart, double& End, float& TolEnd);

private:
  int                 myNbVis;
  int                 myNbHid;
  HLRAlgo_EdgeStatus* EVis;
  HLRAlgo_EdgeStatus* EHid;
  int                 iVis;
  int                 iHid;
  double              myHidStart;
  double              myHidEnd;
  float               myHidTolStart;
  float               myHidTolEnd;
};

#include "HLRAlgo_EdgeIterator.lxx"

#endif // _HLRAlgo_EdgeIterator_HeaderFile