"Cousin Ricky"  wrote in message
<web.48fd69e8e0492fdd85de7b680@news.povray.org>:
> So towards the end of August, I drew a diagram of an elliptical torus, and
> stared at it.  A pattern emerged almost immediately, but it just sat there
> looking pretty.  Hrummph.  I continued to stare at the diagram.
> 
> Finally, a couple of weeks ago, the pattern whispered to me from the graph
> paper:
> 
>    "t^4 - 2*z*t^3 + (x^2+z^2-d^2)*t^2 + 2*d^2*z*t - d^2*z^2 = 0
>    Solve for t."

What are the meanings of the variuous variables?

Post a reply to this message