// Show the rotation axis and the equator
// File by Michael Schmitt   (c) 1997-05-22
// m-schmitt@t-online.de   or   admin@esys.org

#version 3.0
#include "colors.inc"
#include "astro.inc"


global_settings { assumed_gamma 2.2 }

light_source { <5, 5,-20> color White }

camera {
   direction <0, 0, 4.5>
   location  <0, 0, -20>
   look_at   <0, 0, 0>
   right <1,0,0>         // x/y ratio
}

// Background
plane { z, 2000 pigment { color White } }

union {
   // rotation axis
   cylinder  { <0,1.2,0>,<0,-1.2,0>, 0.01 
      pigment { color Cyan }
   }
   // 
   sphere { <0.0, 0.0, 0.0>, 1
      pigment { color LightBlue filter 0.7 }      
   }
   // pole
   sphere { <0,0,0>, 0.03
     translate y*1
     pigment { color Red }
   }
   // pole
   sphere { <0,0,0>, 0.03
     translate y*-1
     pigment { color Red }
   }
   // equator
   torus { 1, 0.01 
      pigment { color Yellow }
   }

   scale 2

   rotate <-45,0,0>
   rotate <0,30,0>

   finish {
      ambient 1
//      diffuse 0.2
      phong 1
   }
  
}