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On 7/10/20 11:58 PM, Kima wrote:
> "Mr" <mauriceraybaud [at] hotmail dot fr>> wrote:
>> Good day !
>> If I'm not mistaken, there is still no POV trick to make use of ies files, but
>> in case someone came up with one, the following page is about to publish a huge
>> amount of ies samples, 30000 already there, aming for around 200 000:
>>
>> https://ieslibrary.com/en/browse
>
> Thanks for sharing this. This quite interesting.
>
> I can't think of any trick except for mixing individual lights according to the
> sect of candela values in the IES file. In this case, we would have a set of
> lights to build a single light source. Then, POV-Ray has to ray trace for each
> of them. This will make the rendering painfully long.
>
> The practical approach is if POV-Ray reads an IES file as a light source. I have
> no knowledge in this matter, but as the lighting system of POV-Ray is
> straightforward, I think it needs a substantial change in the lighting system.
>
>
See:
https://github.com/POV-Ray/povray/issues/322
for more information.
Bill P.
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