ImageColorAt out of bounds

[4dr1en]

Hello, I also have a problem with ImageColorAt, with images in portrait format.
This is an example of an image that makes a lot of errors "ImageColorAt out of bounds": https://imgur.com/a/7RBwF4k
I use the code in wamp (php7.3.12).
Have you found a solution to this problem?

[xwiz]

This may be a problem with php mime configuration.

Take a look at this #3 (comment)

[4dr1en]

I don't know how to configure this but I think i found a problem in makeThumbnail.

this function make too small thumbail if the image is in portrait format.
I replaced

$newheight = $thumbheight;

$divisor = $height / $thumbheight;

$newwidth = floor( $width / $divisor );

by

if($width >= $height){

            $newheight = $thumbheight;

            $divisor = $height / $thumbheight;

            $newwidth = floor( $width / $divisor );

        }

        else{

            $newwidth = $thumbwidth;

            $divisor = $width / $thumbwidth;

            $newheight = floor( $height / $divisor );

        }

And now that work for me. 👍

[xwiz]

Interesting can you share a sample problematic image? The resizing should normally be able to resize/downscale to 8 x 8 unless the images are smaller than that..

[4dr1en]

I had this issue with all images with $height > $width. Even the images with just a 90° rotation.

[xwiz]

Hmm, been long I tested, will check it out and set up a unit test... Feel free to create PR if you have tested