// Created on: 2012-08-06
// Created by: jgv@ROLEX
// Copyright (c) 2012-2014 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 _BRepOffsetAPI_MiddlePath_HeaderFile
#define _BRepOffsetAPI_MiddlePath_HeaderFile

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

#include <TopoDS_Shape.hxx>
#include <TopoDS_Wire.hxx>
#include <TopTools_ShapeMapHasher.hxx>
#include <NCollection_Map.hxx>
#include <NCollection_Sequence.hxx>
#include <BRepBuilderAPI_MakeShape.hxx>

//! Describes functions to build a middle path of a
//! pipe-like shape
class BRepOffsetAPI_MiddlePath : public BRepBuilderAPI_MakeShape
{
public:
  DEFINE_STANDARD_ALLOC

  //! General constructor.
  //! StartShape and EndShape may be
  //! a wire or a face
  Standard_EXPORT BRepOffsetAPI_MiddlePath(const TopoDS_Shape& aShape,
                                           const TopoDS_Shape& StartShape,
                                           const TopoDS_Shape& EndShape);

  Standard_EXPORT void Build(
    const Message_ProgressRange& theRange = Message_ProgressRange()) override;

private:
  TopoDS_Shape                                             myInitialShape;
  TopoDS_Wire                                              myStartWire;
  TopoDS_Wire                                              myEndWire;
  bool                                                     myClosedSection;
  bool                                                     myClosedRing;
  NCollection_Map<TopoDS_Shape, TopTools_ShapeMapHasher>   myStartWireEdges;
  NCollection_Map<TopoDS_Shape, TopTools_ShapeMapHasher>   myEndWireEdges;
  NCollection_Sequence<NCollection_Sequence<TopoDS_Shape>> myPaths;
};

#endif // _BRepOffsetAPI_MiddlePath_HeaderFile
