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SWFDisplayItem->rotateTo (no version information, might be only in CVS) SWFDisplayItem->rotateTo -- Rotates the object in global coordinates Descriptionvoid swfdisplayitem->rotateto ( float degrees ) | 警示 | 本函數是實驗性的。本函數的行為，內含函數名稱以及其它任何關於本函數的文件可能會在沒有知會的情況下隨
PHP 以後的發佈而改變。使用本函數風險自擔。 |
swfdisplayitem->rotateto() set the current object
rotation to degrees degrees in global coordinates.
The object may be a swfshape(), a
swfbutton(), a swftext() or a
swfsprite() object. It must have been added using
the swfmovie->add().
This example bring three rotating string from the background to the
foreground. Pretty nice.
例子 1. swfdisplayitem->rotateto() example
<?php
$thetext = "ming!";
$f = new SWFFont("Bauhaus 93.fdb");
$m = new SWFMovie();
$m->setRate(24.0);
$m->setDimension(2400, 1600);
$m->setBackground(0xff, 0xff, 0xff);
// functions with huge numbers of arbitrary
// arguments are always a good idea! Really!
function text($r, $g, $b, $a, $rot, $x, $y, $scale, $string)
{
global $f, $m;
$t = new SWFText();
$t->setFont($f);
$t->setColor($r, $g, $b, $a);
$t->setHeight(960);
$t->moveTo(-($f->getWidth($string))/2, $f->getAscent()/2);
$t->addString($string);
// we can add properties just like a normal PHP var,
// as long as the names aren't already used.
// e.g., we can't set $i->scale, because that's a function
$i = $m->add($t);
$i->x = $x;
$i->y = $y;
$i->rot = $rot;
$i->s = $scale;
$i->rotateTo($rot);
$i->scale($scale, $scale);
// but the changes are local to the function, so we have to
// return the changed object. kinda weird..
return $i;
}
function step($i)
{
$oldrot = $i->rot;
$i->rot = 19*$i->rot/20;
$i->x = (19*$i->x + 1200)/20;
$i->y = (19*$i->y + 800)/20;
$i->s = (19*$i->s + 1.0)/20;
$i->rotateTo($i->rot);
$i->scaleTo($i->s, $i->s);
$i->moveTo($i->x, $i->y);
return $i;
}
// see? it sure paid off in legibility:
$i1 = text(0xff, 0x33, 0x33, 0xff, 900, 1200, 800, 0.03, $thetext);
$i2 = text(0x00, 0x33, 0xff, 0x7f, -560, 1200, 800, 0.04, $thetext);
$i3 = text(0xff, 0xff, 0xff, 0x9f, 180, 1200, 800, 0.001, $thetext);
for ($i=1; $i<=100; ++$i) {
$i1 = step($i1);
$i2 = step($i2);
$i3 = step($i3);
$m->nextFrame();
}
header('Content-type: application/x-shockwave-flash');
$m->output();
?>
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See also
swfdisplayitem->rotate().
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