POV-Ray : Newsgroups : povray.general : (lots of) ies files for download Server Time: 14 Jul 2020 03:45:17 GMT
  (lots of) ies files for download (Message 1 to 3 of 3)  
From: Mr
Subject: (lots of) ies files for download
Date: 7 Jun 2020 20:05:00
Message: <web.5edd48606a8bfc586adeaecb0@news.povray.org>
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


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From: Kima
Subject: Re: (lots of) ies files for download
Date: 11 Jul 2020 04:00:01
Message: <web.5f0938e7b6338e29ecc0fada0@news.povray.org>
"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.


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From: William F Pokorny
Subject: Re: (lots of) ies files for download
Date: 11 Jul 2020 13:00:09
Message: <5f09b7d9@news.povray.org>
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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