#include <stdlib.h>
#include <grass/raster.h>
#include "local_proto.h"

int 
draw_line (int screen_x, int screen_y, int cur_screen_x, int cur_screen_y, int color1, int color2)
{
	R_standard_color(color1);
	R_move_abs(cur_screen_x, cur_screen_y) ;
	R_cont_abs(screen_x, screen_y) ;
	R_standard_color(color2);
	if(abs(screen_y-cur_screen_y) <= abs(screen_x-cur_screen_x))
	{
		R_move_abs(cur_screen_x, cur_screen_y-1) ;
		R_cont_abs(screen_x, screen_y-1) ;
	}
	else
	{
		R_move_abs(cur_screen_x+1, cur_screen_y) ;
		R_cont_abs(screen_x+1, screen_y) ;
	}
	
	R_stabilize() ;

	return 0;
}