"Ive" <lil### [at] hotmailcom> schreef in bericht 
news:4870c7c8$1@news.povray.org...
> "Thomas de Groot" <t.d### [at] internlDOTnet> wrote in message 
> news:48708fd4@news.povray.org...
>>>
>> There
>>> was even a POV-Ray patch provided (By David Buck: 
>>> <4365fcf9$1@news.povray.org>) that corrected the epsilon value for those 
>>> scenes combining very distant and very near objects.
>>
>
> Interesting  - I did not follow the NG at this time.
>
> The "epsilon-problem" appears not only in scenes with large/small scales
> but also - as in your "paintes desert" scene (great idea BTW) - effects
> the shadow ray calculation. And is of course not limited to poser figures
> or meshes imported by PoseRay.

Indeed. Everything is affected as we "discovered" in the Ringworld 
experiments.

>
>> Now, my next hunch is that epsilon has been changed for version 3.7, can 
>> anybody confirm this? I have not the beta installed at the moment, 
>> pending the installer problems are ironed out.
>>
>
> Well, I have (not yet) installed the 3.7 beta sources but my guess is the
> hard coded EPSILON remains the same. Changing it would surely help
> for some scenes but meight also very well break others. I think it should
> not be hard coded but part of the global_settings block.
>

Yes, you are most probably right. I seem to remember that it was suggested 
to Chris Cason at the time, but I cannot find that thread. I probably 
dreamed it... :-)

Again, thanks for reminding me of the epsilon issue. I am going to note it 
down seriously this time so that I shall have no excuses next time.  ;-)

Thomas

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