ps_curveto

(PECL ps >= 1.1.0)

ps_curveto — Draws a curve

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

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。