Hello -

I'm using POVRAY 3.6 and know very little about raytracing.

I'm trying to generate a graphic to illustrate the Riemann surface of
arctan.

I've tried gnuplot and rejected it because I can't figure out to get the
surface transparent in that program.

Instead, I've taken a material definition from Tor Olav Kristensen's
Villarceau Circles that looks pretty much how I'd like and built an
isosurface using it.  Kristensen's basic idea was to surround the image
with a very large sphere (blue in his case, white in mine) and use
radiosity to light it.

The problem is that I've getting part of the surface washed out in white,
and I don't know how to fix it (other than by moving the camera to an angle
I don't want).

Rather than attach everything, I'm posting the image and the source here:

http://www.freesoft.org/bbaccala/arctan_surface.html

Can anybody suggest either how to fix the POVRAY file, or perhaps some other
solution entirely to this problem?

Any advice would be greatly appreciated...

Post a reply to this message