Zeger Knaepen wrote:
> 
> > BTW, i wonder how much slower it would be not to store the normals and
> > calculate them from the vertices during trace.  This could save a lot of
> > space when dealing with large heightfields.
> Actually, after a quick look at the code, I had the idea that that's how it's
> done now...
> But it was a *very* quick look! :)
> 

The normals for all vertices are calculated in 'smooth_height_field()' in
hfield.c, the code in 'HField_Normal()' only interpolates these normals.

Christoph

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