#include <stdio.h>
#include <math.h>

#include "mygraph.h"
#include "point.h"
#include "Xroutines.h"

dc_draw_line ( line aline, environment * env) {
   float dx,dy,y,m;
   point  pt;

   dy = aline.e1.y - aline.e2.y;
   dx = aline.e1.x - aline.e2.x;
   m = dy/dx;
   y = aline.e1.y;


   printf("line %d %d %d %d\n",aline.e1.x,aline.e1.y,aline.e2.x,aline.e2.y);
   fflush(stdout);
   for (pt.x=aline.e1.x; pt.x < (1+aline.e2.x); pt.x++){
       pt.y = (int) y;
       printf("%d %d\n",pt.x,pt.y); fflush(stdout);
       dc_draw_point(pt, env);
       y = y + m;
   }
}