How to rotate an image in GD Image Library while keeping transparency?

Question

I\'m making a skin previewer for my site; I need to rotate parts of an image to create a representation of this for my users to see.

The skin is a PNG file, and all part

Answer 1

1. Cut out the piece of the image you want to rotate
2. Rotate preserving alpha using something like this http://www.exorithm.com/algorithm/view/rotate_image_alpha
3. Merge back in preserving alpha using the following:

-

imagesetbrush($destimg, $srcimg);
// x, y are the center of target paste location
imageline($destimg, $x, $y, $x, $y, IMG_COLOR_BRUSHED);