Hello.

First of all, there's no torus in this picture !


I spent a lot of time trying to figure out why my isosurface wasn't
showing. So I added the "max_gradient" parameter. I started with 10.
Each time I tried, POV told me that the max_gradient found was too low.


I had to set *3e10* for it to be ok.


Ouch!!! What justifies such a gigantic max_gradient?



The function is :
function {
  (sq(sqrt(x*x + y*y) - 3) + z*z - 0.4 ) *
  (sq(sqrt((x - 4.5)*(x - 4.5) + z*z) - 3) + y*y - 0.4) *
  (sq(sqrt((x + 4.5)*(x + 4.5) + z*z) - 3) + y*y - 0.4) *
  (sq(sqrt((y + 4.5)*(y + 4.5) + z*z) - 3) + x*x - 0.4) *
  (sq(sqrt((y - 4.5)*(y - 4.5) + z*z) - 3) + x*x - 0.4) *
  (sq(sqrt(x*x + y*y) - 5) + z*z - 0.4 )
  }





-- 
Kurtz le pirate
Compagnie de la Banquise

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