do_circle man page on DragonFly

do_circle man page on DragonFly

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do_circle(3)			Allegro manual			  do_circle(3)

NAME
       do_circle  -  Calculates	 all the points in a circle. Allegro game pro‐
       gramming library.

SYNOPSIS
       #include <allegro.h>

       void do_circle(BITMAP *bmp, int x, int  y,  int	radius,	 int  d,  void
       (*proc)(BITMAP *bmp, int x, int y, int d));

DESCRIPTION
       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);

SEE ALSO
       do_ellipse(3), do_arc(3), do_line(3), circle(3), circlefill(3)

Allegro				 version 4.4.2			  do_circle(3)

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