Warp wrote:
>   This would not produce a pure portion of the original image because
> the perspective would change. OTOH, I'm not sure it matters that
> much. :)

A: Can anybody draw a rectangle, but with rounded edges?

B: Here you go!

C: That's not a rectangle! It has rounded edges! But maybe it doesn't
matter.

Rune
-- 
3D images and anims, include files, tutorials and more:
rune|vision:  http://runevision.com
POV-Ray Ring: http://webring.povray.co.uk