Jak vytvorit animaci za pomoci php ?

[petrakis]

Pred par dny jsem mel jeden problem. Potreboval jsem vytvorit animace s co nejnizzsi velikosti gif-u. Samotna animace by s Photoshopem byla otazka par minut, ale ja jsem potreboval aby byla animace pomerne dlouha,tim padem pocet framu se zvetsoval a velikost gif-u rostla. Nakonec jsem to vyresil zpusobem k me plne spokojenosti. Mozna nekomu to prijde vhod a tak zde je navod:

nejdriv ukazka ( jsetli animace skoncila udelejte refresh anebo pravej klik a zobrazit obrazek):



zobrazeni kostky je provedeno jednoduse ( priklad zobrazeni 6 kostek):

Kód: [Vybrat]

<?php
$k = 6;

for ($i = 1; $i <= $k; $i++) {
echo "<img src='dd2.php?rl=$i' alt='$i' />";
}
?>

jako vidite obrazek je zobrazen jako php kod za pouziti header-u kde je definovanej content type image/gif

soubor dd2.php tedy vypada takhle:

Kód: [Vybrat]

<?php
header('Content-type: image/gif');
require('GifCreator.class.php');
$r = $_GET['rl'];
if($r=="1"){
$i2 = array("die-2.gif","die-4.gif","die-6.gif","die-5.gif","die-1.gif","die-1.gif");
}
if($r=="2"){
$i2 = array("die-1.gif","die-3.gif","die-5.gif","die-6.gif","die-4.gif","die-2.gif");
}
if($r=="3"){
$i2 = array("die-4.gif","die-2.gif","die-1.gif","die-5.gif","die-6.gif","die-3.gif");
}
if($r=="4"){
$i2 = array("die-6.gif","die-3.gif","die-1.gif","die-2.gif","die-5.gif","die-4.gif");
}
if($r=="5"){
$i2 = array("die-3.gif","die-4.gif","die-2.gif","die-1.gif","die-6.gif","die-5.gif");
}

if($r=="6"){
$i2 = array("die-5.gif","die-3.gif","die-4.gif","die-2.gif","die-1.gif","die-6.gif");
}

$d = array(30, 30, 30, 30, 30, 30);
 //interval v ms mezi jednotlivejma framy
$y = array(0, 0, 0, 0, 0, 0);
$y = array(0, 0, 0, 0, 0, 0);

$anim2 = new GifCreator($i2, 255, 255, 255, 10, $d, $x, $y, 'C_FILE');
  // cislo 10 je pocet animacii (loop)
echo  $anim2->getAnimation();
?>

no a na zaver soubor GifCreator.class.php:

Kód: [Vybrat]

<?php



class GifCreator

{

var $ver = '1.1';

var $dly = 50;

var $mod = 'C_FILE';



var $first = true;

var $debug  = false;

var $use_loop = false;

var $transparent = false;

var $use_global_in = false;



var $x = 0;

var $y = 0;

var $ch = 0;

var $fin = 0;

var $fout = '';

var $loop = 0;

var $delay = 0;

var $width = 0;

var $height = 0;

var $trans1  = 255;

var $trans2  = 255;

var $trans3  = 255;

var $disposal = 2;

var $out_color_table_size = 0;

var $local_color_table_flag = 0;

var $global_color_table_size = 0;

var $out_color_table_sizecode = 0;

var $global_color_table_sizecode = 0;



var $gif = array(0x47, 0x49, 0x46);

var $buffer = array();

var $local_in = array();

var $global_in = array();

var $global_out = array();

var $logical_screen_descriptor = array();



function GifCreator($images, $t1, $t2, $t3, $loop, $dl, $xpos, $ypos, $model, $debug = false)

{

$debug ? $this->debug = true : $this->debug = false;

if($this->debug) print "<b>GifCreator $this->ver debugger:</b><br>\n";

if($model)

$this->mod = $model;

if($loop > -1)

{

$this->loop = floor($loop - 1);

$this->use_loop = true;

}

if($t1 > -1 && $t2 > -1 && $t3 > -1)

{

$this->trans1 = $t1;

$this->trans2 = $t2;

$this->trans3 = $t3;

$this->transparent = true;

}

for($i = 0; $i < count($images); $i++)

{

$dl[$i] ? $this->delay = $dl[$i] : $this->delay = $this->dly;

$xpos[$i]  ? $this->x = $xpos[$i] : $this->x = 0;

$ypos[$i]  ? $this->y = $ypos[$i] : $this->y = 0;

$this->start_GifCreator_process($images[$i]);

}

$this->fout .= "\x3b";

}

function start_GifCreator_process($fp)

{

if($this->mod == 'C_FILE')

{

if(!$this->fin = fopen($fp, 'rb'))

{

if($this->debug) print "Error file open: $fp\<br>";

return;

}

}

else if($this->mod == 'C_MEMORY')

{

$this->ch  = 0;

$this->fin = $fp;

}

$this->getbytes (6);

if(!$this->arrcmp($this->buffer, $this->gif, 3))

{

if($this->debug) print "Isn't GIF file!\n<br>";

return;

}

$this->getbytes (7);

if($this->first) $this->logical_screen_descriptor = $this->buffer;

$this->global_color_table_sizecode = $this->buffer[4] & 0x07;

$this->global_color_table_size = 2 << $this->global_color_table_sizecode;

if($this->buffer[4] & 0x80)

{

$this->getbytes((3 * $this->global_color_table_size));

for($i = 0; $i < ((3 * $this->global_color_table_size)); $i++)

{

$this->global_in[$i] = $this->buffer[$i];

}

if($this->out_color_table_size == 0)

{

$this->out_color_table_size = $this->global_color_table_size;

$out_color_table_sizecode = $this->global_color_table_sizecode;

$this->global_out = $this->global_in;

}

if($this->global_color_table_size != $this->out_color_table_size || $this->arrcmp($this->global_out, $this->global_in, (3 * $this->global_color_table_size)))

{

$this->use_global_in = true;

}

}

for($loop = true; $loop;)

{

$this->getbytes(1);

switch ($this->buffer[0])

{

case 0x21:

$this->read_extension();

break;

case 0x2c:

$this->read_image_descriptor();

break;

case 0x3b:

$loop = false;

break;

default:

             if($this->debug) printf("Unrecognized byte code 0x%x, truncating file!\n<br>", $this->buffer[0]);

$loop = false;

}

}

if($this->mod == 'C_FILE')

fclose($this->fin);

}



function read_image_descriptor()

{

$this->getbytes(9);

$head = $this->buffer;

     $this->local_color_table_flag = ($this->buffer[8] & 0x80) ? true : false;

     if($this->local_color_table_flag)

     {

         $sizecode = $this->buffer[8] & 0x07;

$size = 2 << $sizecode;

$this->getbytes(3 * $size);

for($i = 0; $i < (3 * $size); $i++)

{

         $this->local_in[$i] = $this->buffer[$i];

         }

         if($this->out_color_table_size == 0)

         {

         $this->out_color_table_size = $size;

         $out_color_table_sizecode = $sizecode;

for($i = 0; $i < (3 * $size); $i++)

{

$this->global_out[$i] = $this->local_in[$i];

}

         }

     }

     if($this->first)

     {

$this->first = false;

$this->fout .= "\x47\x49\x46\x38\x39\x61"; // <= 'GIF89a'

if($this->width && $this->height)

{

$this->logical_screen_descriptor[0] = $this->width & 0xFF;

$this->logical_screen_descriptor[1] = ($this->width & 0xFF00) >> 8;

$this->logical_screen_descriptor[2] = $this->height & 0xFF;

$this->logical_screen_descriptor[3] = ($this->height & 0xFF00) >> 8;

}

$this->logical_screen_descriptor[4] |= 0x80;

$this->logical_screen_descriptor[5] &= 0xF0;

$this->logical_screen_descriptor[6] |= $this->out_color_table_sizecode;

$this->putbytes($this->logical_screen_descriptor, 7);

         $this->putbytes($this->global_out, ($this->out_color_table_size * 3));

if($this->use_loop)

{

$ns[0] = 0x21;

$ns[1] = 0xFF;

$ns[2] = 0x0B;

$ns[3] = 0x4e;  // N

$ns[4] = 0x45;  // E

$ns[5] = 0x54;  // T

$ns[6] = 0x53;  // S

$ns[7] = 0x43;  // C

$ns[8] = 0x41;  // A

$ns[9] = 0x50;  // P

$ns[10] = 0x45; // E

$ns[11] = 0x32; // 2

$ns[12] = 0x2e; // .

$ns[13] = 0x30; // 0

$ns[14] = 0x03;

$ns[15] = 0x01;

$ns[16] = $this->loop & 255;

     $ns[17] = $this->loop >> 8;

$ns[18] = 0x00;

$this->putbytes($ns, 19);

}

     }

   if($this->use_global_in)

{

$outtable = $this->global_in;

$outsize = $this->global_color_table_size;

$outsizecode = $this->global_color_table_sizecode;

}

else

{

$outtable = $this->global_out;

$outsize = $this->out_color_table_size;

}

if ($this->local_color_table_flag)

{

if ($size == $this->out_color_table_size && !$this->arrcmp($this->local_in, $this->global_out, $size))

{

$outtable = $global_out;

$outsize = $this->out_color_table_size;

}

else

{

$outtable = $this->local_in;

$outsize = $size;

$outsizecode = $sizecode;

}

}

$use_trans = false;

if($this->transparent)

{

for ($i = 0; $i < $outsize; $i++)

if (   $outtable [3 * $i ] == $this->trans1

&& $outtable [3 * $i + 1] == $this->trans2

&& $outtable [3 * $i + 2] == $this->trans3

)

break;

if ($i < $outsize)

{

$transindex = $i;

$use_trans = true;

}

else

{

if($this->debug) print "Transparent color not found!\n<br>";

}

}

if($this->delay || $use_trans)

{

$this->buffer[0] = 0x21;

$this->buffer[1] = 0xf9;

$this->buffer[2] = 0x04;

$this->buffer[3] = ($this->disposal << 2) + ($use_trans ? 1 : 0);

$this->buffer[4] = $this->delay & 0xff;

$this->buffer[5] = ($this->delay & 0xff00) >> 8;

$this->buffer[6] = $use_trans ? $transindex : 0;

$this->buffer[7] = 0x00;

$this->putbytes($this->buffer,8);

}

$this->buffer[0] = 0x2c;

$this->putbytes($this->buffer,1);

$head[0] = $this->x & 0xff;

$head[1] = ($this->x & 0xff00) >> 8;

$head[2] = $this->y & 0xff;

$head[3] = ($this->y & 0xff00) >> 8;

$head[8] &= 0x40;

if($outtable != $this->global_out)

{

$head[8] |= 0x80;

$head[8] |= $outsizecode;

}

$this->putbytes($head,9);

if($outtable != $this->global_out)

{

if($this->debug) print "Using local color table.\n<br>";

$this->putbytes($outtable, (3 * $outsize));

}

$this->getbytes(1);

$this->putbytes($this->buffer,1);

for (;;)

{

$this->getbytes(1);

$this->putbytes($this->buffer,1);

if(($u = $this->buffer[0]) == 0)

{

break;

}

$this->getbytes($u);

$this->putbytes($this->buffer, $u);

     }

}



function read_extension()

{

     $this->getbytes(1);

     switch($this->buffer[0])

     {

case 0xf9:

if($this->debug) print "Skipping Graphic Control Extension.\n<br>";

     $this->getbytes(6);

    break;

case 0xfe:

if($this->debug) print "Skipping Comment Extension.\n<br>";

     for (;;)

     {

$this->getbytes(1);

                 if (($u = $this->buffer[0]) == 0)

     break;

$this->getbytes($u);

     }

     break;

case 0x01:

if($this->debug) print "Skipping Plain Text Extension.\n<br>";

     $this->getbytes(13);

     for (;;)

     {

$this->getbytes(0);

                 if (($u = $this->buffer[0]) == 0)

     break;

$this->getbytes($u);

     }

break;

        case 0xff:

if($this->debug) print "Skipping Application Extension.\n<br>";

     $this->getbytes(9);

     $this->getbytes(3);

     for (;;)

     {

$this->getbytes(1);

                 if (!$this->buffer[0])

                 break;

                 $this->getbytes($this->buffer[0]);

             }

break;

default:

if($this->debug) print "Skipping unrecognized extension.\n<br>";

     for (;;)

     {

$this->getbytes(1);

         if(!$this->buffer[0])

         break;

$this->getbytes($this->buffer[0]);

}

     }

}







function arrcmp($b, $s, $l)

{

for($i = 0; $i < $l; $i++)

{

if($s{$i} != $b{$i}) return false;

}

return true;

}







function getbytes($l)

{

for($i = 0; $i < $l; $i++)

{

if($this->mod == 'C_FILE')

{

         $bin = unpack('C*', fread($this->fin, 1));

         $this->buffer[$i] = $bin[1];

         }

         else if($this->mod == 'C_MEMORY')

         {

                $bin = unpack('C*', substr($this->fin, $this->ch, 1));

                $this->buffer[$i] = $bin[1];

                $this->ch++;

         }

}

return $this->buffer;

}







function putbytes($s, $l)

{

for($i = 0; $i < $l; $i++)

{

$this->fout .= pack('C*', $s[$i]);

}

}







function getAnimation()

{

return $this->fout;

}

}

?>


pouzity gify v animacich:

[aloisam]

nemůžu si pomoct, ale k+, co příspěvek, to užitečný návod.

[mka]

Moc pěkná práce. K++