背景是黑色

我已經盡了一切努力來解決這個問題。我花了一個多小時研究和嘗試代碼，但沒有任何幫助。背景是黑色

此代碼執行以下操作。

採取兩種完全黑白圖像，並重新將它們上色（，同時保持透明度）
合併兩個圖像融合在一起
輸出圖像（但與黑色背景！）

有人可以幫助識別和修補導致黑色背景的部分嗎？有關腳本的示例，請參閱以下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);

來源

2013-05-12 Anonymous

設置imagealphablending爲false，用透明顏色填充你的形象，設置imagealphablending爲真，那麼你做的東西複製。

$final_image = imagecreatetruecolor($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

來源

2013-05-12 23:31:19

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