Rendering with Radiance

Blender's renderer and external renderer export

Moderators: jesterKing, stiv

Post Reply
nic19
Posts: 0
Joined: Fri May 23, 2003 10:52 am

Rendering with Radiance

Post by nic19 » Fri May 23, 2003 11:07 am

I am just discovering Blender and this open source programm could be an excellent interface for the open source programm called Radiance (please visit http://radsite.lbl.gov/radiance/HOME.html )
This programm is a very professional programm for rendering scene and it is used to study lux level from natural light as much as studing glare problems.

This programm, as Blender could become tommorow standard for architectes and i volontier for leading people in creating an open source plateform for architects. As it works in the open-source community, i will try to delegate a maximum of the work as my level of programmation is not very high. Nevertheless i can be the link between the people developing Blender and highly experienced developer in the scientist field ( please visit www.esru.strath.ac.uk for the programm ESP-r that already have an interface to Radiance and www.engsims.com for CFlo3, a CFD code)

I beleive that Radiance can benefit from Blender as much as Blender would benefit from Radiance, that is what is called "symbiose" in french.

Please let me know if some of you would be interested by this challenge.

Regards,

Nic

ray_theray
Posts: 47
Joined: Wed Oct 16, 2002 3:05 am
Location: NM, US
Contact:

Post by ray_theray » Fri May 23, 2003 7:14 pm

http://mywebpages.comcast.net/rayae1/tutorial.htm
A while back I took Jan Walter's old Radiance export script, updated it for the Blender 2.25 API, and added some things like material export and special lights. Most of the export stuff is Jan's, all the easy, frilly, auxiliary stuff is mine. Just follow the instructions for lights and material naming, start the script in a text window, and have fun with Radiance! Note that all of the pictures on that page are rendered straight from Blender using the script.

P.S. This only works with Blender 2.25, not 2.26, 2.27, tuhopuu, or any Blender built on Python 2.0 (it doesn't matter what you actually have installed on your computer) because the pntvec and matrix modules are designed for 2.0 and I haven't figured out how to upgrade them yet.
-ray_theray

shadowman99
Posts: 6
Joined: Wed Oct 16, 2002 3:14 am

Post by shadowman99 » Thu Jun 05, 2003 11:28 pm

bookmarking thread

bmud
Posts: 0
Joined: Sun Feb 08, 2004 8:13 am
Location: Raleigh, NC, USA
Contact:

Post by bmud » Sun Sep 11, 2005 7:23 am

BUMP I'm really really interested in radiance primarily because a. it's open and b. it's what paul debevec uses. Anyway, last time i tried radiance, it wanted me to have a copy of autoCAD just to run it. Was that just me?

Sooo.. if a radiance renderer could gather some programmers such as ray_theray up there, and whoever you can get ahold of nic19, and some of the radiance people -- who had a guy talking at blender conference 2004 to boot! It would be ideal to see radiance supported as a renderer option much in the same way yafray works as a plugin.

ray_theray
Posts: 47
Joined: Wed Oct 16, 2002 3:05 am
Location: NM, US
Contact:

Post by ray_theray » Sun Sep 11, 2005 11:31 pm

Say, thanks for your interest (though I would be loathe to call myself a programmer as much as a script enthusiast ;-) ). First of all, you should be able to use the "underbelly" programs to Desktop Radiance without CAD software. The script only uses the Radiance programs (those common to any distribution of Radiance).

Second, I think it would be a bit more difficult to include Radiance as a "plugin" renderer to Blender as closely as Yafray, since they are quite independent in focus. The biggest issue will be in the two programs' different interpretations of scenes: i.e., Radiance sees lights as light-emitting meshes instead of Blender's point lights, Radiance usually prefers high-dynamic range textures as opposed to Blender's LDR textures, etc.

I don't know if I could personally see to the porting of this script to C++ since I really only have Python experience and absolutely no experience in Blender's own code. Another issue is that I have not had time to maintain the export script code, and it pertains to earlier versions of both Radiance and Blender.
-ray_theray

al'be:do
Posts: 0
Joined: Fri Sep 23, 2005 1:13 pm

Post by al'be:do » Fri Sep 23, 2005 1:36 pm

Hi, there!

I hope that sooner or later there will be a blender plugin of the maxwell renderer. It's a spectral based renderer with physical sky data and available for the main commercial apps like Cinema4D, that I use mainly, Maya, 3DS Max etc. Think of it as a light physics simulator with real camera simulation.

I also tried Radiance some time ago, but was not really convinced. The Windows implementation has not benn updated since then.
That's a pity, because I liked the concept.

Some links to the maxwell renderer:

http://www.maxwellrender.com/

http://forums.cgsociety.org/showthread.php?t=233460

http://www.wahn.demon.co.uk/Maxwell/Phy ... index.html

http://www.evermotion.org/index.php?unf ... =exclusive

http://www.cgarchitect.com/upclose/article1_NL.asp

Well, let's hope this app will come for Blender too. Let's write a petition! :)

al'be:do
al'be:do - IPA phonetic transcription for albedo.

Quotient of outgoing and incoming radiation of objects.

Post Reply