Hi,

I've just discovered the use of isosurfaces for use as terrain! 
Previously I have used height fields, and have written a few little 
programs to do object placement/generate texture bitmaps based on the 
gradient/height - ie. rocky texture for steeps slopes, grass for flatter 
areas, and snow depending on altitude etc.

I'm using the f_hetero_mf function for my terrain, and was wondering, is 
there any way of achieveing something similar to my texturing program? 
Since discovering Isosurfaces (and trace for object placement), I'd like 
to do the whole lot with povray. Is there some way of calculating the 
gradient/height and having povray 'decide' which texture to use? Perhaps 
a sneaky combination of texture_maps and the f_hetero_mf function?

Many thanks for reading this far!!
Cheers,
John

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