"Norbert Kern" <nor### [at] t-onlinede> wrote:
> "Mr" <mauriceraybaud [at] hotmail dot fr>> wrote:
>
> > Perfect ! *****  The forward persepective is magnetic...  Would it be imaginable
> > to render a very slow and short animation of just a camera travelling forward ?
> > would the noise generator and various tricks used get freaky ? I think the lack
> > of animated animals or wind in the leaves would not necessarily ruin the effect
> > (think of it like a 19th century Matrix Bullettime :-) )
>
>
> Technically it would be possible.
> The scene is organized in instanced tiles (mirrored and translated to the sides
> and of course several times in camera direction.
> No tricks were involved in planting like leaving out invisible parts. So you can
> walk through the "world" (here is a low quality look at the first tile).
>
> Of course nearly all of the "special" or otherwise invisible objects are put at
> this tile separately, but this would give you freedom to place different things
> as you move on, at least in theory.
>
> What would kill the animation is radiosity.
> I used mid quality settings (pretrace_start 0.08, pretrace_end 0.005, count 240,
> nearest_count 8, error_bound 0.375, recursion_limit 1). Render time was directly
> related to radiosity settings in this scene.
> These settings would generate many defects invisible in a single image. At least
> I've experienced this in other cases.
>
> So you would have to crank up radiosity settings and thereby accept parse times
> of minimum 60 minutes per frame.
>
> Currently I'm done with this scene, but if you want, I can download the whole
> unsorted folder (ca. 19 GB) - if you can provide a place to download (and my
> email adress doesn't exist anymore) ;-)
>
> Regards
> Norbert

Thanks for the info,
Ouch for the file size... if you make two less than 10GB zips, you could upload
them to http://dl.free.fr/upload.html

I heard that Radiosity nearest count could be dropped to 1 with latest POV
versions, if you use POV 3.8 you can use AA method 3(stochastic) and use
minimum or 0 aa value leaving most of the smoothing work to a tiny camera depth
of field (aperture) value.

With these changes, Radisoity count can be lowered down to 100, and error_bound
moved up to 0.75


About Pretrace, I opted for using half of this for my default pretrace_start
(0.04), but I can't remember if it would give me render time improvement, or
faster readability of picture at very little cost. My default pretrace_end is
0.004

All this sounds like lowering quality, but animation quality is subconsciously
expected to be lower, not higher.

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