On 05/30/2017 12:59 PM, Bald Eagle wrote:
> With regard to my continuing interest in tori, esp the Clifford Torus, and their
> relationship to the Dupin cyclide by geometric inversion, I was playing with
> some inversion code, and ran into some strange artefacts.
>
>
> Perhaps someone can see what's going on here.   It seems very strange to lose
> all of the objects above a straight line.
>
> I had another instance where just the top right quadrant got wiped out.

I got a completely blank image, except for the sky_sphere.

I also got these warnings:

----------[BEGIN MESSAGES]----------
Parsing 16549K tokens
File 'baldeagle-inversiontest.pov' line 54: Parse Warning: Divide by zero.
File 'baldeagle-inversiontest.pov' line 57: Parse Warning: Divide by zero.
File 'baldeagle-inversiontest.pov' line 60: Parse Warning: Divide by zero.
Parsing 36707K tokens
-----------[END MESSAGES]-----------

Please note that, as I saved your post, the #version statement is on 
line 18.  If the #version is at the top of your scene file, you'll have 
to subtract 17 from the above line numbers.  I also suspect several line 
breaks introduced by the news software right about where the divisions 
by zero occur.

> #version 3.7;
>. . .
>  #for (Theta, 0, tau, tau/Steps)
>   #for (Phi, 0, tau, tau/Steps)
>. . .

Evidently, your scene requires #version 3.71;

Post a reply to this message