(PECL haru >= 0.0.1)
HaruPage::circle — Append a circle to the current path
$x
   , float $y
   , float $ray
   )Appends a circle to the current path.
x
     Horizontal coordinate of the center point.
y
     Vertical coordinate of the center point.
ray
     The ray of the circle.
   Returns TRUE on success.
  
Throws a HaruException on error.