ps_curveto

(PECL ps >= 1.1.0)

ps_curveto — Draws a curve

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.

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.

成功时返回 true，或者在失败时返回 false。

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