# ps_curveto

(PECL ps >= 1.1.0)

ps_curveto — Draws a curve

### 说明

ps_curveto(
resource `$psdoc`,
float `$x1`,
float `$y1`,
float `$x2`,
float `$y2`,
float `$x3`,
float `$y3`
): bool

Add a section of a cubic Bézier curve described by the three given control points to the current path.

### 参数

`psdoc`

  Resource identifier of the postscript file as returned by ps_new().

`x1`

  x-coordinate of first control point.

`y1`

  y-coordinate of first control point.

`x2`

  x-coordinate of second control point.

`y2`

  y-coordinate of second control point.

`x3`

  x-coordinate of third control point.

`y3`

  y-coordinate of third control point.

### 返回值

成功时返回 `true`， 或者在失败时返回 `false`。

### 参见

- ps_lineto() - Draws a line

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