In article <38b95ad4@news.povray.org>, "Paul" <ran### [at] freenetcouk> wrote:
>Firstly I want to created a hollow sphere that is filled with small holes. I
>imagine it looking like it's been sprayed with gunfire.
>
>Next I want to place a light source inside the sphere so that the light
>shines out through the holes and creates narrow beams of light, perhaps
>making use of some mist or fog.
>

I've been recently playing with this code. Should be a good starting point. 
The transmit holes in the color_map render quicker than with using CSG to cut 
the holes out.

camera {
        location <0, 2, -5>
        look_at <0, 0, 0>
}

light_source { <0, 0, 0> color rgb 2 }
light_source { <10, 10, -10> color rgb 0.25 }

sphere { <0,0,0>, 1 
        pigment { 
                leopard 
                color_map { 
                        [ 0.0 color rgbt <0.3, 0.3, 0.8, 0.25> ]
                        [ 0.7 color rgbt <0.3, 0.3, 0.8, 0.25> ]
                        [ 0.7 color rgbt <0.3, 0.3, 0.8, 1.0> ]
                        [ 1.0 color rgbt <0.3, 0.3, 0.8, 1.0> ]
                }
                scale 0.0625
        }
        rotate <0, clock*45, 0>
}

plane { y, -2 pigment { color rgb 1 } hollow }
plane { z, 2 pigment { color rgb 1 } hollow }

#declare m = 1;
#if (m)
        media {
          //intervals 10
          //samples 10,15
          //confidence 0.9999
          //variance 1/1000
          //ratio 0.9
                absorption rgb <0.07, 0.07, 0.03>
                scattering { 1, rgb 0.1 extinction 0.1 }
        }
#end

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