1) Currently only multiplies of 90 degrees rotations are supported.
2) No collision detection, thats really out of scope of Imaging.

I have two quick questions...

1) Can I draw a image rotated on top of another image at any angle?  ...or am I forced to use only multiplies of 90 degrees?  (eg. I'd like to start with a small image, rotate it 29 degrees and then draw it on top of another image).  If I'm forced to use 90 degree angles, can I somehow work around that?

2) Are there any collision detection methods?  For example, if I have two images and two positions, does this imaging library provide any methods for checking if any pixels overlap?  (eg. non-alpha pixels)

Thanks!