ps_arcn

(PECL ps >= 1.1.0)

ps_arcn — Draws an arc clockwise

说明 ¶

ps_arcn(
    resource $psdoc,
    float $x,
    float $y,
    float $radius,
    float $alpha,
    float $beta
): bool

Draws a portion of a circle with at middle point at (x, y). The arc starts at an angle of alpha and ends at an angle of beta. It is drawn clockwise (use ps_arc() to draw counterclockwise). The subpath added to the current path starts on the arc at angle beta and ends on the arc at angle alpha.

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
alpha: The starting angle given in degrees.
beta: The end angle given in degrees.

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

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