"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote:
> "PM 2Ring" <nomail@nomail> schreef in bericht
> news:web.4b0416847e0782c5f4c648ed0@news.povray.org...
> > Here are the first few of these cubes, in coloured glass, with pseudo-HDRI
> > lighting.
> >
>
> oooh! very nice.
>
> Thomas

Thanks, Thomas! It's great to see you are still here ray-tracing.

I've been learning more about Linux & have even done a little bit of X windows
programming in C. But most of my programming lately has been in Python, which is
great fun. I haven't used Python much in conjunction with POV-Ray, but as I
mention in the Mandelbulb thread "'Accidental" Isosurface", I was using Python
to generate Mandelbulb data, although I translated my program to C today for
reasons of speed.

Most of my ray tracing in the last few years has been to create geometric
diagrams. Like this illustration of the equation xy + yz + zx = 0, which is a
double cone centred on the x+y+z axis. The surface only passes through the

(obviously) divide it symmetrically. This diagram looks best when rotated, but
the anim is a bit large to post here.

The cubes use the default ior of 1.0, since I didn't want any distortion. I used
the ancient quadric{} object for this surface; it was the natural choice, given
its equation. I don't think I've used quadric directly since the days of
DKBtrace! :)

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