文字
ps_circle
(PECL ps >= 1.1.0)
ps_circle — Draws a circle
说明
bool ps_circle
( resource
$psdoc
, float $x
, float $y
, float $radius
)
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