Description
bool 
ps_circle ( resource psdoc, float x, float y, float radius )
   Draws a circle with its middle point at (x,
   y). The circle starts and ends at position
   (x+radius,
   y). If this function is called outside a path it
   will start a new path. If it is called within a path it will add the circle
   as a subpath. If the last drawing operation does not end in point
   (x+radius,
   y) then there will be a gap in the path.