// Created on: 1993-06-17
// Created by: Jean Yves LEBEY
// 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 _TopOpeBRepBuild_PaveClassifier_HeaderFile
#define _TopOpeBRepBuild_PaveClassifier_HeaderFile

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

#include <TopoDS_Edge.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Real.hxx>
#include <TopAbs_Orientation.hxx>
#include <Standard_Integer.hxx>
#include <TopOpeBRepBuild_LoopClassifier.hxx>
#include <TopAbs_State.hxx>
class TopoDS_Shape;
class TopOpeBRepBuild_Loop;



//! This class compares vertices on an edge.
//!
//! A vertex V1 is inside a vertex V2 if V1 is on the
//! part of the curve defined by V2.
//!
//! If V2 is FORWARD V1 must be after V2 on the curve.
//! If V2 is REVERSED V1 must be before V2 on the curve.
//! If V2 is INTERNAL V1 is always inside.
//! If V2 is EXTERNAL V1 is never inside.
class TopOpeBRepBuild_PaveClassifier  : public TopOpeBRepBuild_LoopClassifier
{
public:

  DEFINE_STANDARD_ALLOC

  
  //! Create a Pave classifier to compare vertices on edge <E>.
  Standard_EXPORT TopOpeBRepBuild_PaveClassifier(const TopoDS_Shape& E);
  
  //! Returns state of vertex <L1> compared with <L2>.
  Standard_EXPORT TopAbs_State Compare (const Handle(TopOpeBRepBuild_Loop)& L1, const Handle(TopOpeBRepBuild_Loop)& L2);
  
  Standard_EXPORT void SetFirstParameter (const Standard_Real P);
  
  Standard_EXPORT void ClosedVertices (const Standard_Boolean B);
  
  Standard_EXPORT static Standard_Real AdjustCase (const Standard_Real p1, const TopAbs_Orientation o, const Standard_Real first, const Standard_Real period, const Standard_Real tol, Standard_Integer& cas);




protected:





private:

  
  Standard_EXPORT TopAbs_State CompareOnNonPeriodic();
  
  Standard_EXPORT TopAbs_State CompareOnPeriodic();
  
  Standard_EXPORT void AdjustOnPeriodic();
  
  Standard_EXPORT Standard_Boolean ToAdjustOnPeriodic() const;


  TopoDS_Edge myEdge;
  Standard_Boolean myEdgePeriodic;
  Standard_Real myFirst;
  Standard_Real myPeriod;
  Standard_Boolean mySameParameters;
  Standard_Boolean myClosedVertices;
  Standard_Real myP1;
  Standard_Real myP2;
  TopAbs_Orientation myO1;
  TopAbs_Orientation myO2;
  Standard_Integer myCas1;
  Standard_Integer myCas2;


};







#endif // _TopOpeBRepBuild_PaveClassifier_HeaderFile
