High!

Mike Williams wrote:

 >One of your trace() rays doesn't intersect Earthslice. This leaves you
 >with "lo" being in the same direction as the sky vector, which produces
 >the error that you are seeing.
 >
 >In fact, it's unlikely that your second trace() would intersect a
 >roughly spherical object, unless cNormVect and lNormVect are very
 >similar.
 >
 >I suggest firstly:
 >#declare la=trace(EarthSlice, lNormVect, -lNormVect);
 >

Ahhh, yes... of course the "direction vector" for the look_at ray can't 
be the same as for the location ray!

I fixed that, and got a reasonable view of the landscape (attached 
here)... but then another problem showed up: narrow gaps between (most) 
triangles! Should I smooth them - or is there another way to get rid of 
that?

See you in Khyberspace!

Yadgar

Now playing: Yellowstone Park (Tangerine Dream)

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