note 51538 deleted from ref.image by nlopess
| From: | nlopess@php.net | Date: | Sun, 03 Apr 2005 11:32:25 +0000 |
| Subject: | note 51538 deleted from ref.image by nlopess | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-87399@lists.php.net to get a copy of this message | ||
Note Submitter: snagnever at gmail dot com
----
Hi, it's my second post on php.net. This example can be called 'funny', bot not too
usefull :P.
The script transforms a true-color image in a html colorized. Lookout:
<?
// image2asci - test script
// by sn4g <snagnever@gmail.com>
// simple script that read "each" pixel from a image and
// outputs an html colorized version of it. works fine
// with truecolor images, but working on it, maybe can
// work with any format.
$file = "/all/public_html/stuff/avatar.png;
// here we create from a png, but can be from any jpg/png/bmp...
if( file_exists($file) ) $src_id = imagecreatefrompng($file);
else die("No such file '$file'");
if( $src_id ){
$x_size = imagesx($src_id);
$y_size = imagesy($src_id);
// if it really read each pixel, it'd be too slow and heavy. so, here we determine
// how many pixels the script must 'jump' each loop. tip: y jump must be greater
// than the x jump, to decrease the distorcion.
$x_jump = 2;
$y_jump = 3;
// char/strings that will construct the image. it's randomly selected after,
// in the loop. a value in the array will be one pixel in the asci-image.
$pixel_char = array(0,8);
echo "The image is $x_size x $y_size\n";
echo "<span style='font-size:8px; font-weight:bold;'>";
echo "<pre>";
// now it has a 'nested loop' to read 'each' pixel and print it
for( $y = 0; $y < $y_size; $y+=$y_jump ){
for( $x = 0; $x < $x_size; $x+=$x_jump ){
if( $x >= $x_size || $y >= $y_size ) break;
$rgb = @imagecolorat($src_id, $x, $y);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
if( $x >= $x_size ) break;
if( $y >= $y_size ) break;
$pc = rand(0,count($pixel_char)-1);
$pc = $pixel_char[$pc];
echo "<font style='color:rgb($r,$g,$b)'>$pc</font>";
} // end of 'x' loop
echo "\r\n"; // end of a line
} // end of 'y' loop
}
?>