// Persistence of Vision Ray Tracer Scene Description File
// File: ?.pov
// Vers: 3.1
// Desc: Basic Scene Example
// Date: mm/dd/yy
// Auth: ?[esp]
//

#version 3.1;
#include "colors.inc"
global_settings {
  assumed_gamma 1.0
}

// ----------------------------------------
camera {
  location  <-3.0, 5.0, -8.0>
  direction 1.5*z
  right     4/3*x
  look_at   <0.0, 0.0,  0.0>
}

sky_sphere {
  pigment   {
    gradient y
    color_map { 
      [0.0 color blue 0.6]
      [1.0 color rgb 1]
    }
  }
}
light_source {
  <-30, 30, -30>*10
  color rgb 1
}

box {
  <5,-1.2,-1>,<7,2,3>
  pigment { White }
}

#declare turb = array[4]{<0,0,1.0>,<0,0,0.8>, <0,0,1.2>, <0,0,0.8>}
#declare St1 = pigment {gradient z turbulence turb[0] colour_map{[0 rgb <1.0,1.0,0>][1 rgb <0,1.0,0>]} }
#declare St2 = pigment {gradient z turbulence turb[1] colour_map{[0 rgb <0.2,0.2,0>][1 rgb <0,0.2,0>]} }
#declare St3 = pigment {gradient z turbulence turb[2] colour_map{[0 rgb <0.5,0.8,0>][1 rgb <0,0.8,0>]} }
#declare St4 = pigment {gradient z turbulence turb[3] colour_map{[0 rgb <0.1,0.4,0>][1 rgb <0,0.3,0>]} }
box {
  <-50,-1,-50>,<50,-2,50>
  texture {
    pigment {
      gradient z+(y/15)
      turbulence <0, 0, 5>
      octaves 30
      omega 1/20
      lambda 0.2
      scallop_wave
      pigment_map { 
        [0/4 St1][1/4 St1]
        [1/4 St2][2/4 St2]
        [2/4 St3][3/4 St3]
        [3/4 St4][4/4 St4]
      }
      scale <0.05,1,1>
    }
    normal {
      gradient z-(y/10)
      turbulence <0, 0, 5>
      octaves 30
      omega 1/20
      lambda 0.2
  //    scallop_wave
      normal_map {
        [0/4 gradient y turbulence turb[0]][1/4 gradient z turbulence turb[0]]
        [1/4 gradient y turbulence turb[1]][2/4 gradient z turbulence turb[1]]
        [2/4 gradient y turbulence turb[2]][3/4 gradient z turbulence turb[2]]
        [3/4 gradient y turbulence turb[3]][4/4 gradient z turbulence turb[3]]
      }
      scale <0.02,1,1>    
    }
    scale <1,3.4,1>
    translate <-15,0,-15>
  }
}