ps_arc
(PECL ps >= 1.1.0)
ps_arc — Draws an arc counterclockwise
说明
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 counterclockwise (use
ps_arcn() to draw clockwise). The subpath added
to the current path starts on the arc at angle alpha
and ends on the arc at angle beta.
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 start angle given in degrees.
beta-
The end angle given in degrees.
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