// Kamera
camera { 
      sky <0,0,1>       
      right <-4/3,0,0>  
      location <10,8,5> 
      look_at <0, 0, -1> 
      angle 30          
}

// Lichtquellen
light_source { 
 <6,-2,8>              
 color rgb <1,1,1>     
}
light_source { 
 <3,10,3>              
 color rgb <1,1,1>     
}

// Boden
plane { 
  z, 0  
  pigment { color rgb z}
  finish {reflection 0.8 phong 0.8}
}

// Variablendeklarration und while-Schleife

#declare i = -1;
#while (i <= 3)
  sphere {<i, 0, 0.5>, 0.5
    pigment { color rgb <0.8, 0.8, 0.8> }
    finish {reflection 0.8 phong 0.8}
  }
  #declare i=i+1;
#end               // Ende der while-Schleife