Le 03/04/2014 12:11, FractRacer a écrit :
> A recent post of Lars R. in p.object.collection point a strange
> phenomenon. When a filtered color is applied to a polynomial (and poly)
> object, some noise appears on this object.

polynomial & poly are two different syntax for the same object, so it's
normal that both display the same behaviour.

> Since I have not good skills with coding I don't know if it is a bug or
> another thing.

It's transparent (filter) and with interior Ior. There might be some
noise amplification on the computation of the two normals (input and
output of the ray). Or something else.

I noticed that the reported poly was 6-th order on dimension, might be
interesting to have a study on the lower even order (even is closed, odd
is usually infinite, IIRC).

It's not as grainy as coincident surface.

Just my 0.02€.

-- 
Just because nobody complains does not mean all parachutes are perfect.

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