SWFShape
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SWFShape::drawCurveTo

(PHP 4 >= 4.0.5)

SWFShape::drawCurveTo — Draws a curve

说明

int SWFShape::drawCurveTo ( float $controlx , float $controly , float $anchorx , float $anchory [, float $targetx ], float $targety )
Warning

此函数是实验性的。 此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本扩展风险自担 。

swfshape::drawcurveto() draws a quadratic curve (using the current line style, set by swfshape::setline()) from the current pen position to (anchorx,anchory) using (controlx,controly) as a control point. That is, head towards the control point, then smoothly turn to the anchor point.

With 6 parameters, it draws a cubic bezier to point (targetx, targety) with control points (controlx, controly) and (anchorx, anchory).

参见

SWFShape
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PHP手册 - N: Draws a curve

用户评论:

Chris (30-Jun-2005 08:28)

for those new this all this, "anchor" is where you want to end up and "control" is the point you would go to if you were drawing a square.

for example, this would draw a quarter circle
<?php
    $s->movePenTo(100, 100);
    $s->drawLineTo(200, 100);
    $s->drawCurveTo(200, 200, 100, 200);
    $s->drawLineTo(100, 100);
?>