Last updated: Fri, 30 Oct 2009

SWFDisplayItem->multColor

(PHP 4 >= 4.0.5)

SWFDisplayItem->multColor — Multiplies the item's color transform

Beschreibung

SWFDisplayItem

void multColor ( float $red , float $green , float $blue [, float $a ] )

Warnung

Diese Funktion ist EXPERIMENTELL. Das Verhalten, der Funktionsname und alles Andere, was hier dokumentiert ist, kann sich in zukünftigen PHP-Versionen ohne Ankündigung ändern. Seien Sie gewarnt und verwenden Sie diese Funktion auf eigenes Risiko.

swfdisplayitem->multcolor() multiplies the item's color transform by the given values.

The object may be a swfshape(), a swfbutton(), a swftext() or a swfsprite() object. It must have been added using the swfmovie->add().

Parameter-Liste

These parameters are integers between 0 and 255 or hexadecimals between 0x00 and 0xFF:

red: Value of red component
green: Value of green component
blue: Value of blue component
a: Value of alpha component

Rückgabewerte

Es wird kein Wert zurückgegeben.

Beispiele

This simple example will modify your picture's atmosphere to Halloween (use a landscape or bright picture).

Beispiel #1 swfdisplayitem->multcolor() example


<?php

$b = new SWFBitmap(file_get_contents("backyard.jpg"));
// note use your own picture :-)
$s = new SWFShape();
$s->setRightFill($s->addFill($b));
$s->drawLine($b->getWidth(), 0);
$s->drawLine(0, $b->getHeight());
$s->drawLine(-$b->getWidth(), 0);
$s->drawLine(0, -$b->getHeight());

$m = new SWFMovie();
$m->setDimension($b->getWidth(), $b->getHeight());

$i = $m->add($s);

for ($n=0; $n<=20; ++$n) {
  $i->multColor(1.0-$n/10, 1.0, 1.0);
  $i->addColor(0xff*$n/20, 0, 0);
  $m->nextFrame();
}

header('Content-type: application/x-shockwave-flash');
$m->output();
?>

add a note User Contributed Notes
SWFDisplayItem->multColor

Anonymous
19-Aug-2009 09:15


Hey, this is a great function that I spent a lot of time looking for. 



What is it great for? Fading. It gives you the ability to fade any supported object (including images) totally or even specific color channels. 



The project I am working on requires a series of images and backgrounds to fade into each other. As a bit of a noob, I found the doc here and it's example a little confusing. 



I thought that to provide a value for a color channel would change it, but it doesn't.



To say, just change the alpha channel value, you can write it like this



<?php

$movie=new SWFMovie();

$movie->setDimension(700,150);

$movie->setBackground(0,255,255);



// image to add to movie

$img="images/example.jpg";



// add it image to movie and fade its alpha channel

$png = new SWFBitmap(fopen($img,"rb")); 

$f1 = $movie->add($png);



$f1->multColor(1,1,1,0.5);

?>



This code will load the image and give it s 50% transperancy.



Similarly, one can fade a single color channel by reducing the value for that specific channel.



<?php

$ft->multColor(0.5,1,1);

?>



This makes the red channel (remember rgb) 50% transparent. You can put a 0 there to completely remove the red channel.



Hope this helps any fellow noobs trying to figure out ming out there.

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SWFDisplayItem->remove

SWFDisplayItem->moveTo

Last updated: Fri, 30 Oct 2009