Also, maybe that should be 21*x^5*y^2 instead of 21*x^5*y*2.

Adam C.


TonyB wrote:

> Remember the "What is this?" post? Well, this is the result of parsing the
> formula through isosurface. It doesn't look like a septic to me. What's

> program to get it? Please, tell me POV has the power!
>
> // septic

> // anthony bennett
> // 8-9(1)2000
>
> background {rgb <0,1,2>/3}
>
> camera
> {
>  location <1,1,-1>*10
>  look_at 0
> }
>
> light_source {<1,2,-3>*10 1}
>
> isosurface
> {
>  function
>   z^2*(z-1)^2*(z+1)^2+.2*(x^7-21*x^5*y*2+35*x^3*y^4
>  -7*x*y^6+7*x^6+21*x^4*y^2+21*x^2*y^4+7*y^6-56*x^4
>  -112*x^2*y^2-56*y^4+112*x^2+112*y^2-64)
>  bounded_by {sphere {0,7}}
>  pigment {rgb <2,3,1>/3}
>  finish {ambient 4/9}
>  rotate x*90
> }
>
>  [Image]

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