// MC930: Exercicio 3 - 19/10/2000
// Americo S. Jr. - RA: 970192

#include "colors.inc"

background{ color rgb < 1.00, 1.00, 1.00 > }

light_source {
  < 0.00, 0.00, 15.00 >
  color rgb < 1.00, 1.00, 1.00 >
} 

camera {
  location  < -10.00, -5.00, 25.00 >
  right     < 2.40, 0.00, 0.00 >
  up        < 0.00, 0.00, 1.80 >
  sky       < 0.00, 0.00, 1.00 >
  look_at   < 0.00, 5.00, 10.00 >
} 

#declare tinta_AMARELO = 
  texture {
    pigment { color rgb < 1.00, 1.00, 0.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare tinta_AZUL = 
  texture {
    pigment { color rgb < 0.00, 0.00, 1.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }
  
#declare tinta_VERDE = 
  texture {
    pigment { color rgb < 0.00, 1.00, 0.00 > }
    finish { diffuse 0.5 specular 0.5 roughness 0.005 ambient 0.1 }
  }

#declare marrom_rugoso =
  texture {
    pigment { color Brown }
    normal { bumps 4.5 scale 0.5 }
    finish { phong 1}
    }

#declare verde_rugoso =
  texture {
    pigment { color Green }
    normal { bumps 0.2 scale 0.2 }
    finish { phong 1}
    }

#declare fruta =
 blob {
    threshold .65
    sphere { <0,0,0>, 10, 1 texture {marrom_rugoso} }
    sphere { <0,0,4>, 10, 1 texture {marrom_rugoso} }
    sphere { <0,0,8>, 10, 1 texture {marrom_rugoso} }
    finish { phong 1 }
  }

#declare miolo =
 blob {
    threshold .5
    sphere { <0,0,0>, 8, 1 texture {verde_rugoso} }
    sphere { <0,0,4>, 8, 1 texture {verde_rugoso} }
    sphere { <0,0,8>, 8, 1 texture {verde_rugoso} }
    finish { phong 1 }
  }

#declare semente =
   sphere {
   < 0.0, 0.0, 2.0 > 0.5
   pigment { Red }
 }

#declare cabinho =
 cylinder {
    < 0.0, 0.0,  6.0>
    < 0.0, 0.0, 20.0>
    0.5
    texture { tinta_AMARELO }
  }

#declare folha =
  sphere {
   < 0.0, 2.0, 18.0 > 2
   scale <0.2,2,1>
   pigment { Green }
 }

#declare corte =
   box {
   <-10.0, -10.0, 0.0>
   < 10.0,  10.0, 8.0>
   texture { marrom_rugoso }
  }

#declare cena_final =

  union {
   object { fruta }
   object { miolo }
   object { cabinho }
   object { semente }
   object { semente translate <2,1,-3>  }
   object { semente translate <-2,-2,2>  }
   object { semente translate <3,-2,-2>  }
   object { semente translate <-3,1,3> }
   object { folha }  
  }

  intersection { 
         difference {
              object { fruta }
              object { miolo }
                    }
         object { corte }
  }

  object { cena_final translate < 0, 25, 0> } 
  object { semente translate <2,1,-3>  }
  object { semente translate <-2,-2,2>  }
  object { semente translate <3,-2,-2>  }
  object { semente translate <-3,1,3> }
  object { semente translate <-2,-1,3>  }
  object { semente translate <2,2,2>  }
  object { semente translate <3,2,-2>  }
  object { semente translate <3,-1,3> }