>>Firstly, has anyone looked into it? (4D geometry in POV-Ray that is.)
> 
> 
> Other than Julia fractals and crackle offset, not that I know of.

...and 4D noise I would imagine...

> You 
> should be able to render a 3D "slice" pretty easily with isosurfaces. 
> Something like this:
> 
> #declare Box4DFn = function {max(abs(x), abs(y), abs(z), abs(t))}
> 
> Then you just have to come up with a rotation to compute the xyzt 
> coordinates...a box with an axis aligned to the t axis isn't very 
> interesting. It's either an ordinary box, or nothing. This page seems to 
> have some info: http://www.geocities.com/igorelik/4rotat.html

OK, will take a look.

Thanks.
Andrew @ home

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