Have you seen that new space age material (I know no name)? This image
reminded me of it. The stuff is almost as light as air (no quotes) and
has a smokey appearance. What I saw of it was in cubes like the media
boxes here.
Nifty image by itself, btw.


Peter Popov wrote:
> 
> (Sorry I had accidentally posted this in p.b.utilities... canceled it)
> 
> This is what a voxel would look like on a 3D Hi-Black Trinitron :)
> 
> Source is attached, media02.pov. Also attached is a tweaked version of
> it (media_photons.pov) designed to make use of photon mapping... but
> it doesn't. Can anybody help me? As the light sources are quite
> distant their rays are practically parallel, so I am expecting this
> normal pattern to produce some focused caustics in the scattering
> media... but it doesn't. Why?
> 
> Any help appreciated.
> 
> ---------
> Peter Popov
> ICQ: 15002700
> 
>  [Image]
> 
> #include "colors.inc"
> 
> global_settings
> {
>   photons
>   {
>     gather 20, 100
>     radius 0.5, 3, 0.5
>   }
> 
>   max_trace_level 25
> }
> 
> sphere
> {
>   0, 0.75
>   texture
>   {
>     pigment { Gray90 }
>     finish { ambient 0.1 diffuse 0.9 brilliance 1.5 reflection 0.5 specular 0.5
roughness 0.005 phong 0.25 phong_size 8 }
>     normal { leopard sine_wave frequency 0.25 phase 0.5 scale 0.05 }
>   }
>   no_shadow
>   photons
>   {
>     reflection on
>     density 0.02
>   }
> }
> 
> union
> {
>   box { 0, .99 }
>   box { <-0.99,0,-0.99>, <0,0.99,0> }
>   box { <0,-0.99,-.99>, <0.99,0,0> }
>   interior
>   {
>     media
>     {
>       absorption 1
>       intervals 10
>       samples 1, 10
>       variance 1/255
>       confidence 0.999
>       scattering { 1, 2 extinction 0}
>     }
>   }
>   hollow
>   pigment { Clear }
>   photons { photons_pass_through }
> }
> 
> camera
> {
>   location  <1.0 , 2.0 ,-3.0>*.85
>   right x
>   look_at   <-.15 , -.3 , 0.0>
> }
> 
> light_source
> {
>   <10,10,10> color Red
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }
> 
> light_source
> {
>   <-10,10,-10> color Blue
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }
> 
> light_source
> {
>   <10,-10,-10> color Green
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }
> 
> #include "colors.inc"
> 
> sphere
> {
>   0, 0.75
>   texture
>   {
>     pigment { Gray90 }
>     finish { ambient 0.1 diffuse 0.9 brilliance 1.5 reflection 0.5 specular 0.5
roughness 0.005 phong 0.25 phong_size 8 }
>     normal { quilted 0.3 scale 0.2 }
>   }
>   no_shadow
> }
> 
> union
> {
>   box { 0, .99 }
>   box { <-0.99,0,-0.99>, <0,0.99,0> }
>   box { <0,-0.99,-.99>, <0.99,0,0> }
>   interior
>   {
>     media
>     {
>       emission 1
>       absorption 1
>       intervals 30
>       samples 1, 10
>       variance 1/255
>       confidence 0.999
>       scattering { 1, 2 extinction 1}
>     }
>   }
> 
>   hollow
>   pigment { Clear }
> }
> 
> camera
> {
>   location  <1.0 , 2.0 ,-3.0>*.85
>   right x
>   look_at   <-.15 , -.3 , 0.0>
> }
> 
> light_source
> {
>   <10,10,10> color Red
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }
> 
> light_source
> {
>   <-10,10,-10> color Blue
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }
> 
> light_source
> {
>   <10,-10,-10> color Green
>   spotlight
>   point_at 0
>   radius 2
>   falloff 5
>   photons { reflection on }
> }

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