Try raising the ambient_light to 3 or 4 and make sure you have .2 or .3
ambient in the wall statement too.  Not only does the object reflecting
light need it, but so does the one recieving it.

Also try placing a very ambient sphere around your light and use
no_shadow with it.

-Mike

Eric Freeman wrote:
> 
> Hey All,
> 
> The subject sez it all.  I've been working on this scene and somebody here
> suggested it could be a good candidate for radiosity.  I've tweaked and
> tweaked, trying settings using both common sense and just randomly changing
> them (I even read the manual!!!), and can't get good results.  Most images
> just look brighter than it would be without radiosity.  A few times I have
> gotten patches of blue all over the brick wall, but what I want is just a
> blue tint along the bottom of the brick wall.  Following are a couple of
> pics and what I hope will be enough info for someone who knows radiosity to
> help me.
> 
> THE GLOBAL SETTINGS
> 
> #if (RadiosityOn = 1)
>   global_settings {
>     ambient_light 1.3
>     radiosity {
>       brightness 3.3
>       count 200
>       nearest_count 8
>       gray_threshold 0
>       low_error_factor 0.8
>       recursion_limit 2
>       minimum_reuse .02
>       error_bound .28
>       distance_maximum 100
>     }
>   }
> #end
> 
> THE FLOOR FINISH
> 
> #declare FloorFinish = finish {
>   ambient 0.30  (when I increase this the floor gets brighter, but I still
> don't get a good blue tint on the wall.)
>   brilliance 3
>   diffuse 0.4
>   specular 0.70
>   roughness 1/60
>   reflection 0.14
> }
> 
> THE LIGHT SETTINGS
> 
> #declare SqY = 16;
> #declare TablHite = SqY*2;
> #declare LiteTrans = 100;
> #declare LiteX = 42;
> #declare LiteY = 30;
> #declare LiteBrite = White*1.0;
> light_source {
>   < 0, 0, 0>
>   color LiteBrite
>   #if (ImageQ = 1)
>     area_light <5,0,0>, <5,0,0>, 5, 5
>     adaptive 1
>     jitter
>     fade_distance LiteTrans+71
>     fade_power 3
>   #end
>   translate <0,0,-LiteTrans>
>   rotate x*LiteX
>   rotate y*LiteY
>   translate <0,TablHite,0>
> }
> 
> The brick wall is on the x-y plane where z = 70.
> 
> The bookcase is on the y-z plane where x = 160.
> 
> I hope this is enough info.
> 
> Thanks,
> 
> Eric
> 
> --
> "Truth derives its strength not so much from itself
> as from the brilliant contrast it makes with what is
> only apparently true." --- Emanual Lasker
> --------------------------------
> http://www.geocities.com/SiliconValley/Heights/2354/
> 
>  [Image]

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