Looks like the same kind of granularity errors that result from field
rendering in pov.  Does this help at all?


A.D.B.

philippe Hay wrote:

> Hello,
>
> I am trying to render a glass of wine, but I have some mesh problems.
>
> The picture vino.jpg shows the problem
> the different objects are exported from Pro Engineer in obj files,
> between 5000 and 6000 triangles.
>
> The result is very strange!
>
> I tried different settings, I also tried to let 0.1 mm space between
> wine and glass, but without sucess.
>
> Finally, I increased the precision in Pro/Engineer and managed to export
> these objects with about 5000
> triangles for the wine and more than 200000 triangles for the glass.
> I  render the scene with povvray 3.5 to see the difference (vino3.jpg)
>
> The problem is still here, but what is interesting is that:
>
> -The glass alone gives good results
> -The wine alone gives good results
> -Putting the wine in the glass gives this poor result!
>
> the problem is the same when rendering with Virtualight for example
>
> The questions are:
>
> 1) Is it possible to render properly a plain glass with meshes or must I
> realise this with SDL
>     to have a correct result?
>
> 2) Is there some options in Povray that could supress or reduce this
> problem?
>     (I tried to increase max trace level to 30 without success)
>
> 3) Is this an optical problem?
>
> Any comments, suggestions are welcome.
>
> best regards
>
> philippe Hay
>
>   ------------------------------------------------------------------------
>  [Image]  [Image]

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