do_circle
Calculates all the points in a circle.
Description
void do_circle(BITMAP *bmp,
int x,
int y,
int radius,
int d,
void (*proc
)(BITMAP *bmp,
int x,
int y,
int d
));
Calculates all the points in a circle around point (x, y) with radius r,
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_explosion_ring(BITMAP *bmp, int x, int y, int d)
{
...
}
do_circle(screen, SCREEN_W/2, SCREEN_H/2,
SCREEN_H/16, flame_color,
draw_explosion_ring);
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