// Last edited on 2005-01-05 22:58:27 by stolfi
// Processed by remove-cam-lights

#include "colors.inc"

#declare semente = seed(4345);

background{ color rgb < 0.75, 0.80, 0.85 > }

#declare tx_cristal =
  texture {
    finish {
      ambient 0.1 diffuse 0.1 reflection 0.25
      specular 1 roughness 0.001
    }
    pigment { color rgb <0.5, 0.5, 1.0> filter 1 }
  }

#declare tx_cristal2 =
  texture {
    finish {
      ambient 0.1 diffuse 0.1 reflection 0.25
      specular 1 roughness 0.001
    }
    pigment { color Brown filter 1 }
  }

#declare cor_espelho =  <1.0, 1.0, 0.3> ;

#declare tx_espelho =
  texture {
    pigment { color rgb <1.00, 1.00, 1.00> }
    finish {
      ambient 0.05 diffuse 0.05
      reflection cor_espelho
      specular 0.20 roughness 0.05
      metallic
    }
  }

#declare pintura =
  texture {
    pigment { color Gray60 }
    finish { diffuse 0.8 specular 0.2 roughness 0.005 ambient 0.1 }
  }

#declare roda =
  object {
    union {
      object {
      torus {
        0.45, 0.3
        texture { pigment { Gray90 } }
      }
      }
      object {
      sphere {
        <0,0.4,0>, 0.1
        texture { pigment { Gray30  } }
      }
      }
    }
    rotate <0,clock*50,0>
 }

#declare janela =
  box {
    <0.20, 2.10, 2.0>, <1.00, 1.80, 2.8>
    texture { tx_espelho }
  }

#declare chamine =
  union {
    object {
      cylinder {
        <0, 0, 0>, <0, 0, 1.2>, 0.7
        texture { pigment { Red } }
      }
    }
    object {
      torus {
        0.8, 0.2
        texture { pigment { Red } }
      }
      rotate <90,0,0>
      translate <0, 0, 1>
     }
  }

#declare frente =
  box {
    <-0.3, -1.5, 1.5>, <0, 1.5, 2.8>
    texture { pigment { Black } }
  }

#declare vagao =
  difference {
    union {

      object {
        box {
          <0.00, 2.00, 0.30>, <5.00, -2.00, 3.00>
          texture { pigment { Green } }
        }
      }

      object {
        polygon {
          4, <0, 2.0, 1.4>, <0, 2.0, 1.6>, <5.0, 2.0, 1.4>, <5.0, 2.0, 1.6>
   texture { pigment { Red } }
        }
      }

      object {
        polygon {
          4, <0, -2.0, 1.4>, <0, -2.0, 1.6>, <5.0, -2.0, 1.4>, <5.0, -2.0, 1.6>
   texture { pigment { Red } }
        }
      }

      #declare rodas = 0.5;
      #while (rodas <= 6)
        object { roda translate <rodas, 2.1, 0.5> }
        object { roda translate <rodas, -2.1, 0.5> }
        #declare rodas = rodas + 1.4;
      #end
   }
   #declare janelas = 0.0;
     #while  (janelas <= 5)
       object { janela translate <janelas, 0.0, 0.0> }
       object { janela translate <janelas, 0.0, -3.0> }
       #declare janelas = janelas + 1.0;
     #end
  }

#declare trem =
  union {

    #declare vagoes = 1;

    #declare nvagoes = 5 + 5*rand(semente);

    #while(vagoes <= nvagoes)

      #if (vagoes <= nvagoes)
        difference {
        union {
        object { vagao translate <-vagoes*6.0, 0, 0> }
 object { chamine translate <-nvagoes*5.4, 0, 3> }
        }
 object { frente translate <-nvagoes*5.4, 0, 0> }
        }

      #else
        object { vagao translate <-nvagoes*5.4, 0, 0> }
      #end

      #declare vagoes = vagoes + 1;
    #end
  }

#declare lama =
  plane { z, 0
  pigment {
    wrinkles
  }
}

#declare estacao =
  union {
    object {
      cylinder {
        <-40, 6, 0>, <-40,6, 5>, 2
 texture { tx_cristal }
      }
    }
    object {
       cone {
         <-40, 6, 5>, 2, <-40,6,8>, 0
         texture { tx_cristal }
      }
    }
  }

#declare estrada =
  box {
    <500,3.5,0>, <-500,-3.5,0.1>
    pigment { Red }
  }

#declare passo1 = -400.0;
#declare passo2 = -100.0;

#if (clock > 0.5)
 #declare clock2 = 1-clock;
#else
 #declare clock2 = clock;
#end

#if (clock2 < 0.2)
  #declare pos = passo1*clock2*clock2;
#else
  #if (clock < 0.8)
    #declare pos = passo2*clock2;
  #else
    #declare pos = passo1*(1-clock2)*(1-clock2);
  #end
#end

#if (clock > 0.5)
 #declare pos1 = -pos;
#else
 #declare pos1 = pos;
#end

difference {
  union {
    object { estrada }
    object { trem
      translate <2+pos1,0,0>
    }
    object { estacao }
  }
}

#include "camlight.inc"
camlight(<-20,-10,0>,<-25,35,4>,1.00,z,1.0)