news:3CCD182B.F823895C@atosorigin.com: 

> Gergely Vandor wrote:
> [SKIP]
>> But this post (Blob : Toward a solution
>> http://news.povray.org/3B991C90.D715B7A3[at]free.fr) suggests that at
>> least some of the blob bugs did not exist in PoV-Ray 2.0, and were
>> "introduced" somewhere in between 2.0 and 3.1. (Is it a naive
>> assumption that this means that it should be relatively easy to fix
>> them?) 
> 
> According, to my experiments, it's easy to fix, but there is a price:
>  + sturm become highly recommended (I would say mandatory).
>  + And of course, there is also a price in computation time
>  (due to sturm but also to the removal of the optimisation).
> 
> If someone could come with a justification of the formulaes used for
>  the hull optimisation, it might be better to debug the optimisation
>  rather than deleting it.
> 
> And it does not explain the media/blob strangeness...
> 

At least and at last I understand. :) Thank you.

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