# 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