Description
void 
swf_shapearc ( float x, float y, float r, float ang1, float ang2)
     The swf_shapearc() function draws a circular
     arc from angle A given by the ang1
     parameter to angle B given by the ang2
     parameter.  The center of the circle has an x coordinate given by
     the x parameter and a y coordinate given
     by the y, the radius of the circle is
     given by the r parameter.