// Created on: 1993-01-21
// Created by: Remi LEQUETTE
// 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.

#define No_Standard_NoSuchObject

#include <TopoDS_Iterator.hxx>
#include <TopoDS_TShape.hxx>

//=================================================================================================

void TopoDS_Iterator::Initialize(const TopoDS_Shape& S, const bool cumOri, const bool cumLoc)
{
  if (cumLoc)
  {
    myLocation = S.Location();
  }
  else
  {
    myLocation.Identity();
  }

  if (cumOri)
  {
    myOrientation = S.Orientation();
  }
  else
  {
    myOrientation = TopAbs_FORWARD;
  }

  if (S.IsNull())
  {
    myIterator = NCollection_List<TopoDS_Shape>::Iterator();
  }
  else
  {
    myIterator.Init(S.TShape()->myShapes);
  }

  if (More())
  {
    updateCurrentShape();
  }
}

//=================================================================================================

void TopoDS_Iterator::Next()
{
  myIterator.Next();
  if (More())
  {
    updateCurrentShape();
  }
}

//=================================================================================================

void TopoDS_Iterator::updateCurrentShape()
{
  myShape = myIterator.Value();
  myShape.Orientation(TopAbs::Compose(myOrientation, myShape.Orientation()));
  if (!myLocation.IsIdentity())
  {
    myShape.Move(myLocation, false);
  }
}
