[REQ] lighting analysis pass

dmn · Post by **dmn** » Wed Mar 19, 2014 10:46 am

I've used Radiance and other radiosity simulations before to assess light quality, and I'm wondering how difficult it would be to have indigo output illuminance contours, to be able to set a unit, a range, and divisions (kind of like levels of posterization). I think it's not as simple as manipulating the final image in photoshop. Illuminance is defined as light incident on a surface, so I can see how this might better fit the radiosity models. I think this would be a great improvement to the functionality of indigo.

Edit: I'm not sure if this is unclear, but what I am suggesting is the ability to use the program to assess real world light levels in an unbuilt (or built) architectural (or other) design (or not?) project from Indigo's simulation.

delle · Post by **delle** » Sat Mar 22, 2014 2:32 am

Do you mean something like this... The old Lightscape 3.2 Classrom

dmn · Post by **dmn** » Sat Mar 22, 2014 2:46 am

Or like this:
http://radsite.lbl.gov/radiance/papers/sg94.1/fig9c.gif

tar_gniK · Post by **tar_gniK** » Sat Mar 22, 2014 7:35 am

As a training architect, this would be awesome. It would reduce the need for Ecotect's lighting analysis...

delle · Post by **delle** » Sat Mar 22, 2014 7:24 pm

Indigo capable of calculating illuminance plus BDRF materials plus IES lights...

A complete new market...

[EDIT]

P.S. Here you will find more BRDF Materials and the CPP source code to read them...

Or you can use the Disney's BRDF Explorer, see my Post here...

dmn · Post by **dmn** » Tue Mar 25, 2014 11:10 am

delle wrote: A complete new market...

yeah...

kklors · Post by **kklors** » Tue Mar 25, 2014 11:14 am

I actually digged similar stuff in Arnold, but to be honest I never really ended up using it. Somehow the 3D experience by itself is going to tell you that that crazy volumetric shader, some super duper refractive caustics or a glossy reflection with tons of bumps is going to fuck up your render times real bad.

Post by **OnoSendai** » Tue Mar 25, 2014 9:50 pm

Hi dmn,
A lighting analysis pass is a good idea, and hopefully shouldn't be too hard to implement.
I think we'll try and add it soon, although there are some other features we want to get done first.

Cheers,
nick

dmn · Post by **dmn** » Tue Mar 25, 2014 11:47 pm

Wow! Ok, that's good to know it's a possibility, at least. I wasn't expecting that. Indigo is superb as is.

[REQ] lighting analysis pass

[REQ] lighting analysis pass

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