OCCT

// Created on: 1993-06-03
// Created by: Laurent BOURESCHE
// 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.

#include <Standard_NoSuchObject.hxx>
#include <Sweep_NumShapeIterator.hxx>

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

Sweep_NumShapeIterator::Sweep_NumShapeIterator()
    : myNumShape(0, TopAbs_SHAPE),
      myCurrentNumShape(0, TopAbs_SHAPE),
      myCurrentRange(0),
      myMore(false)
{
}

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

void Sweep_NumShapeIterator::Init(const Sweep_NumShape& aShape)
{
  myNumShape = aShape;
  if (myNumShape.Type() == TopAbs_EDGE)
  {
    int nbvert = myNumShape.Index();
    myMore     = (nbvert >= 1);
    if (myMore)
    {
      myCurrentRange    = 1;
      myCurrentNumShape = Sweep_NumShape(1, TopAbs_VERTEX, myNumShape.Closed(), false, false);
      if (nbvert == 1)
      {
        if (myNumShape.BegInfinite())
        {
          myCurrentOrientation = TopAbs_REVERSED;
        }
        else
        {
          myCurrentOrientation = TopAbs_FORWARD;
        }
      }
      else
      {
        myCurrentOrientation = TopAbs_FORWARD;
      }
    }
  }
}

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

void Sweep_NumShapeIterator::Next()
{
  myCurrentRange++;
  myMore = myCurrentRange <= myNumShape.Index();
  if (myMore)
  {
    if (myNumShape.Type() == TopAbs_EDGE)
    {
      myCurrentNumShape =
        Sweep_NumShape(myCurrentRange, TopAbs_VERTEX, myNumShape.Closed(), false, false);
      myCurrentOrientation = TopAbs_REVERSED;
    }
  }
}