text: /*
   * ***** BEGIN GPL LICENSE BLOCK *****
   *
   * This program 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.
   *
   * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   *
   * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
   * All rights reserved.
   *
   * The Original Code is: all of this file.
   *
   * Contributor(s): none yet.
   *
   * ***** END GPL LICENSE BLOCK *****
   */
  
  /** \file boolop/intern/BOP_Segment.h
   *  \ingroup boolopintern
   */
  
   
  #ifndef BOP_SEGMENT_H
  #define BOP_SEGMENT_H
  
  #include "BOP_Indexs.h"
  #include <iostream>
  using namespace std;
  
  class BOP_Segment
  {
  private:
  	int getEdgeBetween(unsigned int v1, unsigned int v2);
  	bool isOnEdge(unsigned int v, unsigned int e);
  
  public:
  	// Cfg : Configuration of the vertices
  	// Values:
  	//         20 IN,
  	//         1X Intersected edge X{1,2,3} of the face,
  	//         0X Coincident vertice X{1,2,3} of the face,
  	//         0 otherwise
  	unsigned int m_cfg1, m_cfg2; 
  	BOP_Index m_v1, m_v2;     // if cfgX >0, vX is the vertice index of the face
  	BOP_Segment();
  
  	static bool isIn(unsigned int cfg);
  	static bool isEdge(unsigned int cfg);
  	static bool isVertex(unsigned int cfg);
  	static bool isDefined(unsigned int cfg);
  	static bool isUndefined(unsigned int cfg);
  	static unsigned int getEdge(unsigned int cfg);
  	static BOP_Index getVertex(unsigned int cfg);
  	static unsigned int createEdgeCfg(unsigned int edge);
  	static unsigned int createVertexCfg(BOP_Index vertex);
  	static unsigned int createInCfg();
  	static unsigned int createUndefinedCfg();
  	void invert();  
  	void sort();
  	unsigned int getConfig();
  
  	friend   ostream &operator<<(ostream &stream, const BOP_Segment &c);
  };
  
  #endif
  