Am 12.12.2011 22:37, schrieb Dre:
> Awesome!

Thanks.

>How did you get that real nice blue light to work??

Well, the construction of the ceiling, the dome and the whole lighting 
is so simple that I'm almost ashamed of it ;)

It is really just a clipped_by sphere and a torus (both with a radial 
texture and emission) and one spotlight.
The spotlight simulates two things at once:
- the "daylight lamp" that would simulate the sun within the arboretum 
and is currently close to zenith.
- the "light tubes" surrounding the dome.
The radius of the spotlight matches exactly the dome radius and the 
falloff is adjusted to match the top of the port and starboard window 
walls. It is yellow/red to compensate for the blue dome color and the 
blue tint produced by radiosity. So we get an average white daylight 
condition under the dome and a slightly bluish tint at the outside due 
the falloff of the spotlight.

   light_source { <0,10,0>  rgb <0.90, 0.85, 0.75>*5
     spotlight point_at <0,0,0> radius 48 falloff 66
     area_light x*0.67 z*0.67 5,5 adaptive 2 circular orient
     fade_power 2 fade_distance FD*2
     projected_through {Ceiling}
   }

This together with moderate radiosity settings

   radiosity {
     pretrace_start 0.08
     pretrace_end   2/max(image_width,image_height)
     count 250
     nearest_count 10
     error_bound 0.45
     recursion_limit 1
     low_error_factor 0.5
     gray_threshold 0
     minimum_reuse 0.015
     brightness 1.0
     adc_bailout 0.01/2
     always_sample off
     normal off
   }

produced the original image at 1920x1080 pixel within 24 hours - and I 
consider this also as quite moderate given the incredible amount of 
grass blades, leaves and petals ;)

-Ive

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