do_line - Calculates all the points along a line. Allegro game programming library.

       Calculates all the points along a line from point (x1, y1) to (x2, y2), calling the supplied function for
       each  one.  This  will  be  passed a copy of the bmp parameter, the x and y position, and a copy of the d
       parameter, so it is suitable for use with putpixel(). Example:

          void draw_dust_particle(BITMAP *bmp, int x, int y, int d)
          {
             ...
          }

             do_line(screen, 0, 0, SCREEN_W-1, SCREEN_H-2,
                     dust_strength, draw_dust_particle);

       do_line - Calculates all the points along a line. Allegro game programming library.

do_circle(3alleg4), do_ellipse(3alleg4), do_arc(3alleg4), line(3alleg4)

Allegro                                           version 4.4.3                                 do_line(3alleg4)

#include<allegro.h>voiddo_line(BITMAP*bmp,intx1,y1,x2,y2,intd,void(*proc)(BITMAP*bmp,intx,inty,intd));