SWFShape::drawCurveTo

(PHP 5 < 5.3.0, PECL ming SVN)

SWFShape::drawCurveTo — Draws a curve

说明

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

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。使用本函数风险自担。

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::drawCurveTo()

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User Contributed Notes 1 note

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Chris ¶

19 years ago


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);
?>

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