Thodoris wrote:
>
>> דניאל דנון wrote:
>>> I've tried to make a color table, but I am missing something. not in the
>>> color-table-code itself, but in somewhere else... I just can't find...
>>
>> untested but try..
>>
>> // 4096*4096 = 16777216 = FFFFFF+1
>> $im = imagecreate(4096, 4096);
>> $white = imagecolorallocate($im, 0, 0, 0);
>> $r = $g = $b = $x = $y = 0;
>> $max = 255;
>> while ($r <= $max) {
>> while ($g <= $max) {
>> while ($b <= $max) {
>> $n = imagecolorallocate($im, $r, $g, $b);
>> imagesetpixel($im, $x, $y, $n);
>> $x = $x == 4096 ? 0 : $x+1;
>> $y = $y == 4096 ? 0 : $y+1;
>> $b++;
>> }
>> $b = 0;
>> $g++;
>> }
>> $g = 0;
>> $r++;
>> }
>> header("Content-Type: image/png");
>> imagepng($im);
>> imagedestroy($im);
>>
>>
>
> Never used image manipulation with PHP but this is giving me a black image.
>
You probably need
$im = imagecreatetruecolor(4096,4096);
Also be aware that creating a truecolor image 4096 pixels square is going to
take a LOT of memory, and it will take a while to download to the client, AND it
is 4096 pixels square!!!!! That's a fair bit bigger than most screens...
I suspect the OP is going to have to rethink this...
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