/* 
 *  call-seq:
 *    draw_arc(center, radius, angles, color)
 *
 *  Draw a non-solid arc (part of a circle), given the coordinates of
 *  its center, radius, and starting/ending angles.
 *  See also #draw_arc_s
 *
 *  *IMPORTANT:* This method will only be defined if Rubygame was compiled
 *  with SDL_gfx-2.0.11 or greater. (Note: #draw_arc_s does not have
 *  this requirement.)
 *
 *  This method takes these arguments:
 *  center::  the coordinates of circle's center, [x,y].
 *  radius::  the radius (pixels) of the circle.
 *  angles::  the start and end angles (in degrees) of the arc, [start,end].
 *            Angles are given *CLOCKWISE* from the positive x
 *            (remember that the positive Y direction is down, rather than up).
 *  color::   the color of the shape, [r,g,b,a]. If alpha
 *            is omitted, it is drawn at full opacity.
 */
VALUE rbgm_draw_pie(VALUE target, VALUE center, VALUE radius, VALUE angles, VALUE rgba)
{
#ifdef HAVE_NONFILLEDPIE
  draw_pie(target,center,radius,angles,rgba,0); /* no fill */
  return target;
#else
  return Qnil;
#endif
}