gfx/TriangleIterator

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/****************************************************************************
  Copyright (C)1996 David Jung <opensim@pobox.com>

  This program/file is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details. (http://www.gnu.org)
  
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  
  $Id: TriangleIterator 1030 2004-02-11 20:46:17Z jungd $
  $Revision: 1.2 $
  $Date: 2004-02-11 15:46:17 -0500 (Wed, 11 Feb 2004) $
  $Author: jungd $
 
****************************************************************************/

#ifndef _GFX_TRIANGLEITERATOR_
#define _GFX_TRIANGLEITERATOR_

#include <base/Object>
#include <gfx/gfx>
#include <gfx/Triangle3>


namespace gfx {

class TriangleContainer;
class TriangleIteratorState;


class TriangleIterator : public std::iterator<std::input_iterator_tag, Triangle3, Int, const Triangle3*, const Triangle3&>, 
                         public base::Object 
{
public:
  TriangleIterator(const TriangleIterator& iter);
  virtual ~TriangleIterator();

  virtual String className() const { return String("TriangleIterator"); }

  TriangleIterator& operator=(const TriangleIterator& ti);

  reference operator*() const;
  pointer   operator->() const;
  TriangleIterator& operator++();
  bool operator==(const TriangleIterator& i) const; 
  bool operator!=(const TriangleIterator& i) const { return !(*this==i); }

protected:
  TriangleIterator(const TriangleContainer& triangles, bool begin);
  
  const TriangleContainer* triangles;
  TriangleIteratorState* iteratorState;

private:
  TriangleIterator() {}

  friend class TriangleContainer;
};


} // gfx

#endif

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