// FLIGHT / Over the Forest '02.09
// By Tsutomu HIGO  E-mail: nj2t-hg@asahi-net.or.jp

#version 3.5;
global_settings {
  max_trace_level 6
  assumed_gamma 2.2
  }

#include "functions.inc"

camera {
  location <0.01, 0.25, -2.5>
  look_at <-0.2, 0.5, 0>
  angle 64
  }

light_source {<-1, 0.5, -2.5> color rgb <1, 1, 1>}
light_source {<0, 10, 10> color rgb <1, 1, 1>}

#declare fn_Pigm = function {
  pigment { marble
    turbulence 0.5
    color_map {
      [0   color rgb 1]
      [0.3 color rgb 0]
      }
    }
  }

isosurface {
  function {y+0.1*sin(x+0.5)+0.075*cos(z*4+3)-2*fn_Pigm(z*2, x*2, y*2).gray*0.5*fn_Pigm(x*2, y*2, z*2).gray*0.5}
  max_gradient 10
  contained_by {box {<-3, -0.5, -2>, < 2, 0.7, 2>}}
  texture {
    pigment {color rgb <0.5, 0.5, 0.5>}
    finish {
      ambient 0.5
      reflection 0.7
      diffuse 0.8
      specular 0.8
      roughness 0.02
      brilliance 2
      }
    scale 0.2/vlength(1)
    }
  rotate <0, 30, 0>
  no_shadow
  }

fog {
  fog_type   2
  distance   1000
  color      rgb <1, 1, 1>
  fog_offset 10
  fog_alt    2.0
  turbulence 0.8
  rotate     <0, 0, 5>
  }

background {color rgb <0, 0.1, 0.3>}