note 106409 deleted from function.imagefilledrectangle by danbrown
| From: | danbrown@php.net | Date: | Tue, 15 Nov 2011 16:51:07 +0000 |
| Subject: | note 106409 deleted from function.imagefilledrectangle by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-184508@lists.php.net to get a copy of this message | ||
Note Submitter: adpsimpson at gmail dot com
----
I've improved the function from administrador(ensaimada)sphoera(punt)com (3rd May 2006) to be a
drop-in replacement for imagefilledrectangle, with gradient automatically applied:
<?php
function imagefilledrectangle_grad($img, $x1, $y1, $x2, $y2, $src_color){
$base_red = ($src_color & 0xFF0000) >> 16;
$base_green = ($src_color & 0x00FF00) >> 8;
$base_blue = ($src_color & 0x0000FF);
$src_red = intval(0.8*$base_red);
$src_green = intval(0.8*$base_green);
$src_blue = intval(0.8*$base_blue);
$dest_red = intval((255-$base_red)*0.2+$base_red);
$dest_green = intval((255-$base_green)*0.2+$base_green);
$dest_blue = intval((255-$base_blue)*0.2+$base_blue);
$width=$x2-$x1;
$inc_red = ($dest_red - $src_red)/$width;
$inc_green = ($dest_green - $src_green)/$width;
$inc_blue = ($dest_blue - $src_blue)/$width;
// If you need more performance, the step can be increased
for ($i=0;$i<$width;$i++){
$src_blue += $inc_blue;
$src_green += $inc_green;
$src_red += $inc_red;
imagefilledrectangle($img,
$x1+$i,$y1,
$x1+$i,$y2,
imagecolorallocatealpha($img,
$src_red,$src_green,$src_blue, 0));
}
}
?>