#declare pistonring = cylinder {
   //*PMName pistonring1
   <0, 0, 0.05>, <0, 0, -0.05>, 4.1
   
   pigment {
      color rgb <1, 0, 0.117647>
   }
   scale 1
   rotate <0, 0, 0>
   translate <0, 0, 0>
   hollow false
}

#declare pistonpigment = pigment {
   color rgb <0.3, 1, 0.3>
}

#declare lobe = intersection {
   sphere {
      <0, 0, 0>, 4
      scale 1
      rotate <0, 0, 0>
      translate <0, 0, 0>
   }
   
   plane {
      //*PMName cut1
      <0, 0, 1>, 0
      scale 1
      rotate <0, 0, 0>
      translate <0, 0, 0>
   }
   
   plane {
      //*PMName cut2
      <1, 0, 1>, 0
      scale 1
      rotate <0, 0, 0>
      translate <0, 0, 0>
      inverse
   }
}

#declare rotor = difference {
   merge {
      //*PMName rotor1
      
      object {
         //*PMName ring1
         pistonring
         scale 1
         rotate y*10
         translate <0, 0, 0>
      }
      
      object {
         //*PMName ring2
         pistonring
         scale 1
         rotate y*35
         translate <0, 0, 0>
      }
      
      object {
         //*PMName lobe0
         lobe
         scale 1
         rotate <0, 0, 0>
         translate <0, 0, 0>
      }
      
      object {
         //*PMName lobe1
         lobe
         scale 1
         rotate y*180
         translate <0, 0, 0>
      }
      
      cylinder {
         <0, 0.5, 0>, <0, 6, 0>, 1
         scale 1
         rotate <0, 0, 0>
         translate <0, 0, 0>
      }
      rotate y*66
   }
   
   cylinder {
      <0, -5, 0>, <0, 0.5, 0>, 1
      scale 1
      rotate <0, 0, 0>
      translate <0, 0, 0>
   }
   
   pigment {
      pistonpigment
   }
}

intersection {
}

global_settings {
   assumed_gamma 1.5
   noise_generator 2
}

light_source {
   <4, 5, -5>, rgb <1, 1, 1>
}

camera {
   perspective
   location <7.05267, 8.33458, -7.83364>
   sky <0, 1, 0>
   direction <0, 0, 1>
   right <1.33333, 0, 0>
   up <0, 1, 0>
   look_at <0, 0, 0>
}

object {
   //*PMName rotor1
   rotor
   scale 1
   rotate <0, 0, 0>
   translate <0, 0, 0>
}