[Radiance-general] displays

[Gregory J. Ward]

Hi Chris,

You can use a simple "light" type, using 400/179 for the radiance value:

void light display_surface
0
0
3 2.2346 2.2346 2.2346

Then substitute this material for the appropriate face.  If you don't  
expect the display to illuminate surface more than a certain distance  
away -- say 20 in your world units, you can use a glow for higher  
efficiency

void glow display_surface
0
0
4 2.2346 2.2346 2.2346  20

Hope this helps.
-Greg

> From: "Chris Foster" <chris.foster at npl.co.uk>
> Date: August 2, 2006 6:47:42 AM EDT
> Hello All,
>
> I have used genbox to create a....box (obviously) and now want to  
> change one side of it to act as the front of a display.(Im not  
> interested in the detail of the display case, a simple box will do)
> I know how to replace one of the polygons with a different material  
> type but what does anyone recommend to use? I dont require the  
> display to show any pictures, i just want it to have a uniform  
> white light emitting from one side of 400 nits. Should i use an  
> illum surface? How can i ensure it has the brightness i require??
>
> Your reply email (below) and attachments to yuni has helped me some  
> greg, i can now add pictures if i so wish, but not sure if it helps  
> me with my above questions
>
> my box is below, although im sure i havent needed to put it in.
>
> thanks in advance
>
> chris
>