Topic: Sunposa background black sun

[saratogaWX]

You should likely sleep now. I'll continue some research today.

I'm sure the issue is with the GD 2.3.3 on your host.. on GD 2.1.0 compatible it is working.  I'll need to find a 2.3.3 GD to test with locally.

[CarlosLSev]

Thank you Ken, always grateful for your work and dedication, surprised by your desire to solve the problem.

[saratogaWX]

One more tweak to try .. download from sunposa.php

It trys to reset pixels in the sun image to the background transparent color.

[CarlosLSev]

 

[saratogaWX]

Grrrr... I'll have to locate/create a PHP with GD 2.3.3 to do local debugging.

Despite having the residual square outline (which should transparent), your instance is stubbornly refusing to behave as expected.

At least, the sun image is round with the solar prominences clipped off, and that was a desired outcome.

Sigh...

[Vasco]

Grrrr... I'll have to locate/create a PHP with GD 2.3.3 to do local debugging.

I was using 2.2.5 (on SunOS) when I had a similar problem back in August. . . but 2.3.3 (on Linux) worked.

[Weatherstation De Hout]

@Ken: check this. It looks like the same problem, with possibly a fix given in the third-to-last post?
https://github.com/spatie/laravel-medialibrary/issues/3502

[CarlosLSev]

Hello, installed version 3.70 from 14.12.24 and it has a similar problem

[saratogaWX]

Yes, your PHP 8.4.1 using GD Version: 2.3.3 is the issue.  I know that @vasco uses GD 2.3.3 successfully on his SunOS hosting, but the vast majority of users have PHP versions with  GD Version: bundled (2.1.0 compatible) and that works just fine.

I tried PHP 8.4.0 on a WAMP server, but it had  GD Version: bundled (2.1.0 compatible) and so worked just fine.

I am afraid you'll have to live with the pink surround of the sun given your current webserver setup.  It just doesn't support transparency as expected.  Sorry.

[CarlosLSev]

Thanks Ken!!

[Vasco]

Just got round to checking out sunposa version 3.70 and it works fine with GD 2.3.3 in PHP 8.2.26 on Linux host.

Much better sun image: https://swanston.maui.co.uk/ajax/wxastronomy.php

[CarlosLSev]

Hi Ken, I modified the function and it now works for me in php 8.4.1

Code: [Select]

// Turn black background transparent fix php 8.4.1
 function maketransparent($oldfile, $newfile, $width, $height)
{
    global $myProxy, $cacheFileDir;
    $tfileName = $cacheFileDir . 'tempImg.gif';
    $tfile = get_file_contents($oldfile);
    if (!$tfile) {
        header('Content-type: text/plain;charset=ISO-8859-1');
        print "..Oops .. unable to fetch '$oldfile' .. exiting.";
        exit(0);
    }
    file_put_contents($tfileName, $tfile);
    $info = getimagesize($tfileName);
    if (!is_array($info)) {
        if (!headers_sent()) {
            header('Content-type: text/plain');
        }
        print "-- error fetching image size from $oldfile.  Unable to continue.\n";
        exit(1);
    }
    $im = imagecreatefromgif($tfileName);
    if ($im == false) {
        if (!headers_sent()) {
            header('Content-type: text/plain');
        }
        print "-- error fetching image file $oldfile for processing.  Unable to continue.\n";
        exit(1);
    }

    $img = imagecreatetruecolor($width, $height);
    $img2 = imagecreatetruecolor($info[0], $info[1]);
    imagealphablending($img2, false);
    imagesavealpha($img2, true);
    imagecopy($img2, $im, 0, 0, 0, 0, $info[0], $info[1]);
    imageRemoveOuterCircle($img2, $info[0], $info[1], 20);
    $trans = imagecolorat($img2, 0, 0);
    imagecolortransparent($img2, $trans);
    imagealphablending($img, false);
    imagesavealpha($img, true);
    imagecopyresampled($img, $img2, 0, 0, 0, 0, $width, $height, $info[0], $info[1]);

    $trans2 = imagecolorallocatealpha($img, 0, 0, 0, 127);
    imagefill($img, 0, 0, $trans2);
    imagecolortransparent($img, $trans2);

    $wt2 = imagesx($img);
    $ht2 = imagesy($img);
    for ($xt = 0; $xt < $wt2; $xt++) {
        for ($yt = 0; $yt < $ht2; $yt++) {
            $pixel = imagecolorsforindex($img, imagecolorat($img, $xt, $yt));
            if ($pixel['alpha'] >= 64) {
                imagesetpixel($img, $xt, $yt, $trans2);
            }
        }
    }

    imagegif($img, $newfile);
    imagedestroy($img);
}




[meteosanjuan]

Hi Ken, I modified the function and it now works for me in php 8.4.1

How great my friend Carlos