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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 322205 $ -->
<refentry xml:id="swfdisplayitem.rotateto" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>SWFDisplayItem::rotateTo</refname>
<refpurpose>Rotates the object in global coordinates</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>void</type><methodname>SWFDisplayItem::rotateTo</methodname>
<methodparam><type>float</type><parameter>angle</parameter></methodparam>
</methodsynopsis>
&warn.experimental.func;
<para>
<function>swfdisplayitem::rotateto</function> set the current object
rotation to <parameter>angle</parameter> degrees in global coordinates.
</para>
<simpara>
The object may be a <function>swfshape</function>, a
<function>swfbutton</function>, a <function>swftext</function> or a
<function>swfsprite</function> object. It must have been added using
the <function>swfmovie::add</function>.
</simpara>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
This example bring three rotating string from the background to the
foreground. Pretty nice.
<example>
<title><function>swfdisplayitem::rotateto</function> example</title>
<programlisting role="php">
<![CDATA[
<?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();
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>SWFDisplayItem::rotate</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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Local variables:
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sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
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sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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vi: ts=1 sw=1
-->
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