Lutz Kretzschmar wrote:
> No, not really. It'd be fairly simple for axis aligned, non-scaled
> objects, but once you start rotating stuff it becomes difficult. You
> would have to calculate the silhouette of an object and that would the
> end of the 'real' in 'Interactive real-time feedback' :-) And I won't
> even mention CSG. (Oh, I just did... sorry). ;-)

Hmm.  Oh well.  Though...for the straight-on views, even a scaled
sphere wouldn't be too hard; it's just an ellipse.  At some rotation.
You dond't even have to mess with perspective.

-- 
Tim Cook
http://empyrean.scifi-fantasy.com

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