Javascript から色を取得する、背景が透明なアニメーション ピクセルの GIF イメージを作成したいと考えています。私はこれを使ってみました: http://www.phpclasses.org/package/3163-PHP-Generate-GIF-animations-from-a-set-of-GIF-images.html そしてこれ: http://www.jeroenvanwissen .nl/weblog/php/howto-generate-animated-gif-with-php しかし、問題があります。私はこのコードを作成しました:
<?php
header ('Content-type:image/gif');
include('GIFEncoder.class.php');
// Open the first source image and add the text.
$image = imagecreatefrompng('None.png');
imagesavealpha($image, true);
$color = $_GET["sc"];
$r_bg = hexdec(substr($color,0,2));
$g_bg = hexdec(substr($color,2,2));
$b_bg = hexdec(substr($color,4,2));
$c1 = imagecolorallocate($image, $r_bg, $g_bg, $b_bg);
imagesetpixel($image,36,24,$c1);
imagesetpixel($image,36,25,$c1);
imagesetpixel($image,36,26,$c1);
imagesetpixel($image,37,26,$c1);
imagesetpixel($image,38,26,$c1);
imagesetpixel($image,38,25,$c1);
imagesetpixel($image,38,24,$c1);
imagesetpixel($image,37,24,$c1);
// Generate GIF from the $image
// We want to put the binary GIF data into an array to be used later,
// so we use the output buffer.
ob_start();
imagegif($image);
$frames[]=ob_get_contents();
$framed[]=40;
// Delay in the animation.
ob_end_clean();
// And again..
// Open the first source image and add the text.
$image = imagecreatefrompng('None.png');
imagesavealpha($image, true);
$color = $_GET["sc"];
$r_bg = hexdec(substr($color,0,2));
$g_bg = hexdec(substr($color,2,2));
$b_bg = hexdec(substr($color,4,2));
$c1 = imagecolorallocate($image, $r_bg, $g_bg, $b_bg);
imagesetpixel($image,34,23,$c1);
imagesetpixel($image,34,24,$c1);
imagesetpixel($image,34,25,$c1);
imagesetpixel($image,34,26,$c1);
imagesetpixel($image,34,27,$c1);
imagesetpixel($image,35,28,$c1);
imagesetpixel($image,36,28,$c1);
imagesetpixel($image,37,28,$c1);
imagesetpixel($image,38,28,$c1);
imagesetpixel($image,39,28,$c1);
imagesetpixel($image,40,27,$c1);
imagesetpixel($image,40,26,$c1);
imagesetpixel($image,40,25,$c1);
imagesetpixel($image,40,24,$c1);
imagesetpixel($image,40,23,$c1);
imagesetpixel($image,39,22,$c1);
imagesetpixel($image,38,22,$c1);
imagesetpixel($image,37,22,$c1);
imagesetpixel($image,36,22,$c1);
imagesetpixel($image,35,22,$c1);
// Generate GIF from the $image
// We want to put the binary GIF data into an array to be used later,
// so we use the output buffer.
ob_start();
imagegif($image);
$frames[]=ob_get_contents();
$framed[]=40;
// Delay in the animation.
ob_end_clean();
// Generate the animated gif and output to screen.
$gif = new GIFEncoder($frames,$framed,0,2,0,0,0,'bin');
echo $gif->GetAnimation();
?>
16 進数のカラー コードを取得し、RGB に変更します。しかし、次のエラーが発生します。
<br />
<b>Notice</b>: Use of undefined constant ERR00 - assumed 'ERR00' in <b>D:\Testing\xampp\htdocs\Test\Test.php</</b> on line <b>75</b><br />
<br />
<b>Notice</b>: Use of undefined constant ERR01 - assumed 'ERR01' in <b>D:\Testing\xampp\htdocs\Test\Test.php</</b> on line <b>75</b><br />
<br />
<b>Notice</b>: Use of undefined constant ERR02 - assumed 'ERR02' in <b>D:\Testing\xampp\htdocs\Test\Test.php</b> on line <b>75</b><br />
<br />
<b>Notice</b>: Use of undefined constant ERR03 - assumed 'ERR03' in <b>D:\Testing\xampp\htdocs\Test\Test.php</b> on line <b>75</b><br />
GIF89a2
それが問題なのかわからない。:/