A candle flame example produced using multiplying densities.

***Sorry about the indented code. I will try not to do it agian.***

#local DebugFlag = 0;
#declare Candle =
union{
  cylinder {
    <0, 0, 0>,
    <0, 1, 0>,
    1
    texture{
      pigment{rgbt 1}
    }
    interior{
      media{
        emission 1
        scattering{1,.01}
        intervals 20
        samples 1, 1
        confidence 0.999
        variance 1/100
        density {
          spherical
          cubic_wave
          turbulence 0.4
          lambda 1
          scale <0.8, 1, 0.8>
          color_map{
            [ 0 rgb 0]
            [ 1 rgb <5.0,3.0,0.0>]
          }
        }
        density {
          gradient y
          translate y
          cubic_wave
          color_map{
            [ 0 rgb 0]
            [ 1 rgb 1]
          }
        }
        density {
          gradient y
          poly_wave 0.5
          color_map{
            [ 0 rgb 0]
            [ 1 rgb 1]
          }
        }
      }
    } 
    hollow
    scale <1, 5, 1>
    translate y*1.25
  }

  intersection{
    cone{y*-8,.75,y*1,.5 pigment{rgb<1,1,.97>}finish{ambient .5 diffuse .23}}
    sphere{<.05,1,0>,.5 inverse pigment{rgb 1}finish{ambient .5 diffuse .23}}
  }

  cylinder{y*.8,y*1.5,.1 pigment{rgb 0}}
}

object{
  Candle
}

camera{
  location <0,1,-6>
  look_at 2.5 * y
}

light_source{
  <75,45,-500>
  color rgb 1
}




-- 
Ken Tyler

mailto://tylereng@pacbell.net

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