ps_circle

(PECL ps >= 1.1.0)

ps_circle — Draws a circle

说明

ps_circle ( resource $psdoc , float $x , float $y , float $radius ) : bool

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.

参数

psdoc: Resource identifier of the postscript file as returned by ps_new().
x: The x-coordinate of the circle's middle point.
y: The y-coordinate of the circle's middle point.
radius: The radius of the circle

返回值

成功时返回 TRUE，或者在失败时返回 FALSE。

参见

ps_arc() - Draws an arc counterclockwise
ps_arcn() - Draws an arc clockwise

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