#include "colors.inc"
#include "shapes.inc"
#include "shapes2.inc"

difference
{
  object { Icosahedron }
  object { Icosahedron scale 0.95 rotate 15 }
  pigment { Clear }
  hollow
  interior
  {
    media
    {
      emission 3
      absorption 8
      intervals 30
      samples 2, 20
    }
  }
}

sphere
{
  0, 5
  hollow
  pigment { Clear }
  interior
  {
    media
    {
      intervals 20
      samples 3, 10
      scattering { 1, 0.35 extinction 0.1 }
      absorption Cyan*0.25
      density { onion turbulence 0.125 octaves 4 color_map { [0 Red] [0.5 Yellow] [1 Black] } scale 3 }
    }
/*    media
    {
      intervals 20
      samples 3, 10
      emission 0.125*Yellow
      absorption 0.125
      density { onion color_map { [0 Red] [0.5 Yellow] [1 Black] } scale 3 }
    }
*/  }
}

camera
{
  location  <0.0 , 0.0 ,-4.0>
  look_at   <0.0 , 0.0 , 0.0>
}

// create a regular point light source
light_source {0, White fade_distance 1.25 fade_power 2 media_attenuation off}