trickeries! » png http://trickeries.com it's tricky to rock a style thats liked online Tue, 02 Mar 2010 06:01:56 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Pixler: a transparent PNG pixel generator http://trickeries.com/252/pixler-a-transparent-png-pixel-generator/ http://trickeries.com/252/pixler-a-transparent-png-pixel-generator/#comments Sun, 16 Nov 2008 10:40:13 +0000 atom http://trickeries.com/?p=252 I made a weensy little script for the theme I recently made (which I still have not named or prepared for distribution) which will generate single pixel transparent pngs to use as tiled background images in css.

demonstration toy

<?php    
 
	$p = imagecreatetruecolor(1, 1);
	imagesavealpha($p, true);
	$o = (100 - (int) $_GET['o']) * 1.27;
	$c = imagecolorallocatealpha($p, (int) $_GET['r'], (int) $_GET['g'], (int) $_GET['b'], $o);
	imagefill($p, 0, 0, $c);
	header("Content-type: image/png");
	imagepng($p);
 
?>

usage / parameters:

r
how much red to include: r=[0-255]
g
how much green to include: g=[0-255]
b
how much blue to include: b=[0-255]
o
how opaque the pixel should be: o=[0(fully transparent)-100(fully opaque)]

so…

pixler.php?r=255&g=255&b=255&o=50
will make a white pixel that is 50% visible.
pixler.php?r=255&o=100
will make a red pixel that is fully visible.
pixler.php
calling the script with no parameters will create an invisible black pixel (…).
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