SWFDisplayItem->rotateTo

Rotates the object in global coordinates. ()
void swfdisplayitem->rotateto ( float degrees )

Warning:

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

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.

Example 555. swfdisplayitem->rotateto() example

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<?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();
?>

See also swfdisplayitem->rotate().

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