In Parse_Cylinder in parse.cpp
        Parse_Vector(Object->apex);  Parse_Comma ();
        Parse_Vector(Object->base);  Parse_Comma ();
should be?
        Parse_Vector(Object->base);  Parse_Comma ();
        Parse_Vector(Object->apex);  Parse_Comma ();
or does the intersection code require this?
It just seems logical that the base of a cylinder from the SDL should be
stored in a variable called base. Of course mathematically it probably
makes little difference. There is similar problem in Parse_Cone.

How have other ppl satisfied the POV licence wrt not enabling new
features unless #version unofficial is in the file?

My matrix math is a little rusty, so can anyone tell if MTransNormal
alters the length of a normal eg through a scale/translate/skew
transform?

This one for someone who is familiar with the hf code: how do I get the
height and normal (possibly smoothed) at a particular **noninteger** x,
z position? Yes I'm stupid.

Bye,
Pabs

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