(PECL haru >= 0.0.1)
HaruPage::circle — Append a circle to the current path
$x
, float $y
, float $ray
) : boolAppends a circle to the current path.
xHorizontal coordinate of the center point.
yVertical coordinate of the center point.
rayThe ray of the circle.
Returns TRUE on success.
发生错误时抛出 HaruException 异常。