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!

I'd like to create a polygon (convex or concave, both cases!) and then fill the inside of the polygon with an image.

Ideally, I'd like the image to optionally repeat if the polygon is bigger than the provided image.

Can anybody help me out with this or at least point me in the right direction of which functions I should be using?

Thanks!!!

Let's say I want to draw an ARGB image on top of an existing ARGB image.

Can I alpha-blend them together?

Thanks!

- John