背景是黑色

我已经尽了一切努力来解决这个问题。我花了一个多小时研究和尝试代码，但没有任何帮助。背景是黑色

此代码执行以下操作。

采取两种完全黑白图像，并重新将它们上色（，同时保持透明度）
合并两个图像融合在一起
输出图像（但与黑色背景！）

有人可以帮助识别和修补导致黑色背景的部分吗？有关脚本的示例，请参阅以下URL。

http://labs.bluefiremedia.net/metro-machine/gd/download-png.php?size=128&padding=29&icon=icons/Application/Add-New.png&bgShape=CircleBG.png&bgColorR=255&bgColorG=0&bgColorB=0&iconColorR=255&iconColorG=255&iconColorB=255

$final_image = imagecreatetruecolor($dimensions, $dimensions); 
imagesavealpha($final_image, true); 

if($bgShape != '') { 
list($originalWidth, $originalHeight) = getimagesize('../images/' . $bgShape); 

$background = imagecreatefrompng('../images/' . $bgShape); 

imagefilter($background, IMG_FILTER_BRIGHTNESS, -255); 
imagefilter($background, IMG_FILTER_COLORIZE, $bgColorR, $bgColorG, $bgColorB); 

$backgroundImage = imagecreatetruecolor($dimensions, $dimensions); 
imagealphablending($backgroundImage , false); 
imagesavealpha($backgroundImage , true); 

imagecopyresampled($backgroundImage, 
    $background, 
    0, 0, 
    0, 0, 
    $dimensions, $dimensions, 
    $originalWidth, $originalHeight 
); 

imagecopy($final_image, $backgroundImage, 0, 0, 0, 0, $dimensions, $dimensions); 

/// 

$icon = imagecreatefrompng("../" . $icon); 

imagefilter($icon, IMG_FILTER_BRIGHTNESS, -255); 
imagefilter($icon, IMG_FILTER_COLORIZE, $iconColorR, $iconColorG, $iconColorB); 

$iconImage = imagecreatetruecolor($dimensions, $dimensions); 
imagealphablending($iconImage , false); 
imagesavealpha($iconImage , true); 

imagecopyresampled($iconImage, 
    $icon, 
    0, 0, 
    0, 0, 
    $dimensions, $dimensions, 
    $originalWidth, $originalHeight 
); 

imagecopy($final_image, $iconImage, 0, 0, 0, 0, $dimensions, $dimensions); 

/// 

imagealphablending($final_image, true); 
imagesavealpha($final_image, true); 

imagepng($final_image, NULL, 0, PNG_NO_FILTER); 

header("Content-type: image/png"); 
imagedestroy($backgroundImage);

来源

2013-05-12 Anonymous

设置imagealphablending为false，用透明颜色填充你的形象，设置imagealphablending为真，那么你做的东西复制。

$final_image = imagecreatetruecolor($dimensions, $dimensions); 
imagealphablending($final_image, false); 
$transparency = imagecolorallocatealpha($final_image, 0, 0, 0, 127); 
imagefilledrectangle($final_image, 0, 0, $dimensions, $dimensions, $transparency); 
imagesavealpha($final_image, true); 
imagealphablending($final_image, true); 

// rest of the code

来源

2013-05-12 23:31:19

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