I think what you are suggesting is an isosurface solving method for all 
objects to allow non-linear transformations to be used...right?
This would be possible for many objects, but not for all...for example, 
meshes wouldn't be easy(though you could probably do some kind of 
proximity calculation).
Also, you wouldn't want to use the isosurface solving method to 
completely replace the existing method, since it is sometimes slower and 
less accurate. However, as an option, and even if only available for 
some objects, it could potentially be very useful.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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