On 04/01/2011 06:30 AM, Stephen wrote:
> On 01/04/2011 10:26 AM, Jim Holsenback wrote:
>> That's what I might end up doing because I'm not totally happy with
>> certain aspects of the lighting just yet ... I tried putting the statue
>> and pedestal in a light group. btw: this is supposed to be "after hours"
>> lighting
>
> I looks great to me.
>
Thanks, but I DO see what Jamie was getting at ... the wall behind the 
statue, and the moai/pedestal itself desperately needs some lighting work.

After reviewing the "Light Attenuation" thread in p.gen I was wondering 
if my problem was what I was doing for fade_distance when I discovered 
that my scattering box was intercepting my room fill light (doh!) I 
/really/ wanted to try to do this scene w/o radiosity and use a 3 point 
lighting scheme ... the key light being the spot on the moai, the back 
light being the light through the window firing up the scattering and 
the room fill to even things out.

As far as fade_distance ... I'm still investigating but I think the 
nugget here is what Christoph said:

"As I already mentioned, the key is not the fade_power, but the 
fade_distance. Sufficiently far away from the light source - relative to 
fade_distance (or, in other words, with sufficiently small fade_distance 
relative to the scene dimensions) - the formula gets arbitrarily close 
to 1/x2. "

I've been using:
#declare LightDist = vlength(LightPos);

as my value for fade_distance, Which is WRONG ... I want a smaller value 
for that and up the intensity of the light source to compensate ... 
@Christoph: Did I get that right?

Jim

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