[Radiance-general] per-vertex coloring

[Greg Ward]

That's funny -- I didn't remember ever writing such a script, but  
sure enough, Thomas is right:

	http://www.radiance-online.org/pipermail/radiance-general/2005- 
February/002444.html

Unfortunately, even if you modified this script to render cones  
rather than spheres in order to get a Voronoi diagram, it wouldn't  
give you the kind of smooth results you are probably after.

None of the Radiance tools or converters really supports per-vertex  
color.  However, gensurf, mgf2rad, and obj2rad all support per-vertex  
normals, which are substantially similar.  It should be possible to  
pass the output of one of these programs through rcalc and convert  
the per-vertex normals to per-vertex colors, but it would be a very  
nasty-looking script that would take me an hour or two to put together.

A C-program that generates a Radiance picture you could use as a  
texture as Thomas suggests might even be easier to write.

-Greg

> From: Thomas Bleicher <tbleicher at arcor.de>
> Date: November 7, 2007 3:59:56 PM MST
>
> On 5 Nov 2007, at 10:09, jelle feringa wrote:
>
>> Hi,
>>
>> For a project I'm currently working on, I'd like to convert a mesh,
>> which is colored on a per-vertex basis to Radiance.
>
> Sorry, this comes a bit late.
>
> Greg has posted a script for plotting values with Radiance tools
> recently. An extension to that was the creation of a texture and
> mapping it onto the surface.
>
> Have you considered creating a texture from your vertex colours?
>
> Regards,
> Thomas