HowTo Talk:Use radiosity

A description of the parameters might be a documentation sort of thing, but seeing what changes to parameters do is sort of a How To thing...

I am working on a few demonstration scenes for the following:

1. a scene demonstrating when radiosity could be used to improve realism.
   • When I was new to POV, I didn't know when to use radiosity, and I think different examples showing the difference between using the ambient light for global illumination and radiosity would be helpful in making such a determination.
2. Using radiosity with lightsources
3. Using radiosity without lightsources (glowing object method)
4. Effects ok sky_sphere or background on radiosity
5. possibly a 10 x 10 grid of images with parameter changes (and render times) to demonstrate some of the main speed/quality ratios.
6. ???

Input would be appreciated! --Reactor 22:32, 27 December 2007 (UTC)

It makes sense to cover the typical problems and artifacts that people run into, and how to avoid those pitfalls.
Maybe something like a Cornell box for a test scene?
TimA 23:34, 27 December 2007 (UTC)

In response:The Cornell box is a pretty good one, but I think we should have several examples, especially different types. The Cornell Box is an indoor scene with all objects very close together. The one I envisioned for an example of when to apply radiosity is a simple outdoor architectural scene that includes both wide areas, smaller objects, and light reflected off of walls farther away.

Included are two images side by side that I think would be helpful to those new to POV in deciding when there scene would benefit from radiosity:

• 

  Without Radiosity

• 

  With Radiosity

The Cornell Box in various forms would be very good for indoor examples, but I think variations of a scene similar to this would be helpful for outdoor examples, especially because a new user may not be aware that the sky_sphere can influence radiosity.

--Reactor