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|problems with GD image transparency|
imagecolorallocatealpha wont change all white pixels to alpha
Basically what I want to do is change all the white pixels in a png image to transparent. Found this code somewhere, which seems to make most of the white pixels transparent, but not all.
$png = imagecreatefrompng("top.png");
$trans_colour = imagecolorallocatealpha($png, 255, 255, 255, 127);
imagefill($png, 0, 0, $trans_colour);
How do I do this?
$im = imagecreatefrompng("top.png");
$bg_color = imagecolorat($im,1,40);
Worked fine. Thanks
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