I saw Kari Kivisalo's suggestions to Tim Nikias on realistic light fading and
gave it a quick go. I set up two identical rooms and a doorway. In one room, a
light was placed slightly lower than the ceiling, but higher than the doorway
height. This light was square and used 25 spotlights are per Kari's suggestions.
I used radiostity with a recursion limit of 5 (probably a little excessive) and
here are the results.
    One is a shot from within the lit room. The other is the same shot, but from
within the unlit room. The imperfect soft shadows are caused by the set up of the
pseudo area-light. No post process was performed.
    I suggest we call these wonderful lights Kari-lights in honour of their
inventor :-)

MJL

--
light_source{9*(y#macro A(H,B,R,T)prism{0,1H+4,0u*9,9v*9,0#local I=1;#while(I<H)
#local V=asc(substr(B,I,1))-33;<div(V,10)mod(V,10)>#local I=I+1;#end pigment{rgb
y}rotate-<90,R>translate-T}#end-z)rgb 9}A(14",6;MWmhryXN3,"60<15,0,8>)box{-99(x+
z)*99pigment{rgb 1}}fog{distance 11}camera{location(y-z)*25look_at 0}A(8"6hiAG=6
"-60x*-10)A(16"/.@VZno=<PLA89/"0x*5) // MJL

Post a reply to this message

Attachments:
Download 'rad_room_b.jpg' (20 KB) Download 'rad_room_a.jpg' (17 KB)

Preview of image 'rad_room_b.jpg'

Preview of image 'rad_room_a.jpg'