Sven Geier nous illumina en ce 2008-11-13 17:23 -->
> As a bit of a followup on the f_crackle posts from earlier, a bunch of tinkering
> finds that much of 'isosurface' appears pretty broken in 3.7b29.
> 
> To me at least.
> 
> To the point where I'm wondering whether it's just me (the "surely someone else
> would have noticed that" effect)
> 
> Could someone confirm or deny that the following produces something rather
> different from what one might assume simply by looking at the code.
> 
> Thanks.
> 
> // ---------------
> camera {
>   location <.1,2,-2>
>   look_at   <0, -.4, 0> }
> sky_sphere{pigment{color rgb <.2,.4,.6>}}
> cone {
>   1*y,  0.0, 0*y, .3
>    pigment {color rgb 10}
> }
> isosurface { function { 2*sqrt(x*x+z*z)+y-1  }
>    pigment { hexagon scale .1  }
> }
> //--------
> 
> (For reference: I would expect a bright cone completely enclosed/obscured by a
> larger hexagon-colored cone).
> 
> 
Renders about the same in 3.6 and 3.7. As other have said, max_gradient should 
be 2.1 (2.01 still give some artefacts) and 3.6 need 2.2.

-- 
Alain
-------------------------------------------------
They that can give up essential liberty to obtain a little temporary safety 
deserve neither liberty nor safety.
Benjamin Franklin

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