// Created on: 1994-10-27
// Created by: Jean Yves LEBEY
// Copyright (c) 1994-1999 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 _TopOpeBRep_FFTransitionTool_HeaderFile
#define _TopOpeBRep_FFTransitionTool_HeaderFile

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

#include "Standard_Integer.hxx"
#include "TopAbs_Orientation.hxx"
class TopOpeBRepDS_Transition;
class TopOpeBRep_VPointInter;
class TopOpeBRep_LineInter;
class TopoDS_Shape;

class TopOpeBRep_FFTransitionTool
{
public:
  DEFINE_STANDARD_ALLOC

  Standard_EXPORT static TopOpeBRepDS_Transition ProcessLineTransition(
    const TopOpeBRep_VPointInter& P,
    const int                     Index,
    const TopAbs_Orientation      EdgeOrientation);

  Standard_EXPORT static TopOpeBRepDS_Transition ProcessLineTransition(
    const TopOpeBRep_VPointInter& P,
    const TopOpeBRep_LineInter&   L);

  Standard_EXPORT static TopOpeBRepDS_Transition ProcessEdgeTransition(
    const TopOpeBRep_VPointInter& P,
    const int                     Index,
    const TopAbs_Orientation      LineOrientation);

  Standard_EXPORT static TopOpeBRepDS_Transition ProcessFaceTransition(
    const TopOpeBRep_LineInter& L,
    const int                   Index,
    const TopAbs_Orientation    FaceOrientation);

  //! compute transition on "IntPatch_Restriction line" edge <R>
  //! when crossing edge <E> of face <F> at point <VP>.
  //! VP is given on edge <E> of face <F> of index <Index> (1 or 2).
  //! <VP> has been classified by FacesFiller as TopAbs_ON an edge <R>
  //! of the other face than <F> of current (face/face) intersection.
  //! Transition depends on the orientation of E in F.
  //! This method should be provided by IntPatch_Line (NYI)
  Standard_EXPORT static TopOpeBRepDS_Transition ProcessEdgeONTransition(
    const TopOpeBRep_VPointInter& VP,
    const int                     Index,
    const TopoDS_Shape&           R,
    const TopoDS_Shape&           E,
    const TopoDS_Shape&           F);
};

#endif // _TopOpeBRep_FFTransitionTool_HeaderFile