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Edge.h

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/* $\Id$ 
   Edge.h in library gridlock
   Written by Samit Ahlawat <ahlawat2@uiuc.edu>
   Distributed under GPL (GNU Public License)
*/

#ifndef _EDGE_H_
#define _EDGE_H_

#include "common_headers.h"
#include "constants.h"


/*******************************************************
 * Representation of Edge class                        *
 *******************************************************/

struct Edge
{
        /********************************************
         *  |  Your edge based variables here   |   *
         * \|/                                 \|/  *
         *  '                                   '   *
         ********************************************/


        /********************************************
         *  .                                   .   *
         * /|\ Your edge based variables above /|\  *
         *  |                                   |   *
         ********************************************/
        
        struct Vertex* vertex_in_edge[2];

#ifndef EDGE_LENGTH_NOT_NEEDED
        
        float length;
        
#endif  
                
        int global_edge_number;

        short is_edge_on_bdry;

};

void edge_init (struct Edge* ed);

#ifndef EDGE_LENGTH_NOT_NEEDED

void compute_length (struct Edge* ed);

#endif

void print_ed_debug_info (struct Edge* ed);

void output_edge (FILE* fp, struct Edge* ed);

#endif

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