Matrix Digital Rain animation in PHP

You need GIFEncoder class to do this Smile

Code:

include('GIFEncoder.class.php');
$msg = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*()-_=+`[]{};:?/.,<>\\|"';
$length = strlen($msg);
$max_x = 400; //image x size
$max_y = 400; //image y size
$font_file = 'cour.ttf';//font, best monospace
$font_size = 10;//font site
$grid = 10;//gridient of the fonts
$measuer = imagettfbbox(10,0,$font_file,'1');
$space = 5;//space between letters
$char_height = $measuer[1] - $measuer[7] + $space;
$char_width = $measuer[2] - $measuer[0] + $space;
$i = 0;

$colorimage = imagecreatetruecolor(1,1);
//this is the part where the colors are made
//you can use other ways to create better looking color scheme
while($i<$grid){
$color[] = imagecolorallocate($colorimage, 0, 255/($i+1), 0);
++$i;
}
//ENOUGH TEXT TO FILL THE PAGE.
$width = ceil($max_x/$char_width);
$height = ceil($max_y/$char_height);

$x = 0;
while($x < $width){
$y = 0;
while($y < $height){
$text[$x][$y] = $msg[rand(0,$length)];
++$y;
}
$drop[$x] = rand(0, $width);
++$x;
}
$i = 0;
while($i<$height+$grid){
$image[] = imagecreatetruecolor($max_x, $max_y);
$x = 0;
while($x < $width){
$y = 0;
while($y < $drop[$x]){
if($drop[$x]-$y<=$grid){
imagettftext($image[count($image)-1], $font_size, 0, $x*$char_width, ($y+1)*$char_height-$space, $color[$drop[$x]-$y], $font_file, $text[$x][$y]);
}
++$y;
}
if($drop[$x]<$height+$grid){
++$drop[$x];
}else{
$drop[$x] = 0;
}
++$x;
}
++$i;

}

ob_start();
$i = 0;
$count = count($image);
while($i<$count){
imagegif($image[$i]);
$imagedata[$i] = ob_get_contents();
imagedestroy($image[$i]);
ob_clean();
++$i;
}
$gif = new GIFEncoder(
$imagedata,
100,
0,
2,
0, 0, 0,
"bin"
);
Header ( 'Content-type:image/gif' );
echo $gif->GetAnimation ();

Last edited by Mgccl on Thu Apr 26, 2007 11:07 pm; edited 1 time in total

[FuN]goku

sweeeeet

ncwdavid

Thats pretty cool. Did you come up with it yourself?

Dougie1

Wow. Mind if I edit your code a bit so that I can get like I want it. That is very cool!

Mgccl

Dougie1 wrote:

Wow. Mind if I edit your code a bit so that I can get like I want it. That is very cool!

no problem Smile

everything on my site is GPL Smile

dxhunter

wow very nice Smile

Dougie1

Mgccl wrote:

Dougie1 wrote:

Wow. Mind if I edit your code a bit so that I can get like I want it. That is very cool!

no problem Smile

everything on my site is GPL Smile

Thanks! I won't release it as my own or anything like that. I will always leave you feedback.

EDIT: Wow. This script takes a lot of memory!!!

Mgccl

Dougie1 wrote:

Mgccl wrote:

Dougie1 wrote:

Wow. Mind if I edit your code a bit so that I can get like I want it. That is very cool!

no problem Smile

everything on my site is GPL Smile

Thanks! I won't release it as my own or anything like that. I will always leave you feedback.

EDIT: Wow. This script takes a lot of memory!!!

Sure it is... it have to create each one of the frames...
but I think I got an idea... it was generating all the image at one time then store each one as gif binary. I just need to make it generate one frame and store as gif binary and destroy the image, then it should use way less memory.

I will do it tomorrow... and I will also make a even better matrix digital rain effect Smile

EDIT:
new version, less memory usage(A LOT LESS)

Code:

ob_start();
$msg = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*()-_=+`[]{};:?/.,<>\\|"';
$length = strlen($msg);
$max_x = 400; //image x size
$max_y = 400; //image y size
$font_file = 'cour.ttf';//font, best monospace
$font_size = 10;//font site
$grid = 10;//gridient of the fonts
$measuer = imagettfbbox(10,0,$font_file,'1');
$space = 5;//space between letters
$char_height = $measuer[1] - $measuer[7] + $space;
$char_width = $measuer[2] - $measuer[0] + $space;
$i = 1;
$colorimage = imagecreatetruecolor(1,1);
$color[1] = imagecolorallocate($colorimage, 255, 255, 255);
while($i<$grid){

$color[] = imagecolorallocate($colorimage, 0, 255-20*$i, 0);
++$i;
}
imagedestroy($colorimage);
//ENOUGH TEXT TO FILL THE PAGE.
$width = ceil($max_x/$char_width);
$height = ceil($max_y/$char_height);

$x = 0;
while($x < $width){
$y = 0;
while($y < $height){
   $text[$x][$y] = $msg[rand(0,$length)];
   ++$y;
}
$drop[$x] = rand(0, $width);
++$x;
}
$i = 0;
while($i<$height+$grid){
$image = imagecreatetruecolor($max_x, $max_y);
$x = 0;
while($x < $width){
   $y = 0;

   while($y < $drop[$x]){
      if($drop[$x]-$y<=$grid){
         imagettftext($image, $font_size, 0, $x*$char_width, ($y+1)*$char_height-$space, $color[$drop[$x]-$y], $font_file, $text[$x][$y]);
      }
      ++$y;
   }
   if($drop[$x]<$height+$grid){
      ++$drop[$x];
   }else{
      $drop[$x] = 0;
   }
   ++$x;
}
imagegif($image);
$imagedata[$i] = ob_get_contents();
imagedestroy($image);
ob_clean();
++$i;
}

$gif = new GIFEncoder(
$imagedata,
100,
0,
2,
0, 0, 0,
"bin"
);
Header ( 'Content-type:image/gif' );
echo $gif->GetAnimation ();
//echo memory_get_usage();