// Created on: 1992-02-18
// Created by: Christophe MARION
// 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 _HLRAlgo_PolyAlgo_HeaderFile
#define _HLRAlgo_PolyAlgo_HeaderFile

#include <HLRAlgo_PolyData.hxx>

#include <Standard.hxx>
#include <Standard_Type.hxx>

#include <TColStd_HArray1OfTransient.hxx>
#include <Standard_Real.hxx>
#include <HLRAlgo_ListIteratorOfListOfBPoint.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Transient.hxx>
#include <TColStd_Array1OfTransient.hxx>

class HLRAlgo_EdgeStatus;


class HLRAlgo_PolyAlgo;
DEFINE_STANDARD_HANDLE(HLRAlgo_PolyAlgo, Standard_Transient)

//! to remove Hidden lines on Triangulations.
class HLRAlgo_PolyAlgo : public Standard_Transient
{

public:

  
  Standard_EXPORT HLRAlgo_PolyAlgo();
  
  Standard_EXPORT void Init (const Handle(TColStd_HArray1OfTransient)& HShell);
  
    TColStd_Array1OfTransient& PolyShell() const;
  
  Standard_EXPORT void Clear();
  
  //! Prepare all the data to process the algo.
  Standard_EXPORT void Update();
  
    void InitHide();
  
    Standard_Boolean MoreHide() const;
  
  Standard_EXPORT void NextHide();
  
  //! process hiding between <Pt1> and <Pt2>.
  Standard_EXPORT HLRAlgo_BiPoint::PointsT& Hide (HLRAlgo_EdgeStatus& status, Standard_Integer& Index, Standard_Boolean& reg1, Standard_Boolean& regn, Standard_Boolean& outl, Standard_Boolean& intl);
  
    void InitShow();
  
    Standard_Boolean MoreShow() const;
  
  Standard_EXPORT void NextShow();
  
  //! process hiding between <Pt1> and <Pt2>.
  Standard_EXPORT HLRAlgo_BiPoint::PointsT& Show (Standard_Integer& Index, Standard_Boolean& reg1, Standard_Boolean& regn, Standard_Boolean& outl, Standard_Boolean& intl);




  DEFINE_STANDARD_RTTIEXT(HLRAlgo_PolyAlgo,Standard_Transient)

protected:




private:


  Handle(TColStd_HArray1OfTransient) myHShell;
  HLRAlgo_PolyData::Triangle myTriangle;
  HLRAlgo_ListIteratorOfListOfBPoint mySegListIt;
  Standard_Integer myNbrShell;
  Standard_Integer myCurShell;
  Standard_Boolean myFound;


};


#include <HLRAlgo_PolyAlgo.lxx>





#endif // _HLRAlgo_PolyAlgo_HeaderFile