// Persistence Of Vision raytracer version 3.5 sample file.
//
// -w320 -h240
// -w800 -h600 +a0.3

// Persistence Of Vision Raytracer
// By Alexander Enzmann

/* sample quartic scene file written by Alexander Enzmann */

#include "shapes.inc"
#include "colors.inc"
#include "textures.inc"

/*
  Folium - a plane with an oogah horn installed (?) or maybe a sassy
           olive sticking out it's pimento!
*/

intersection {
   quartic {
     < 0.0,  0.0,  0.0,   0.0, 0.0,  0.0,  0.0,  0.0,  0.0, 2.0,
       0.0,  0.0, -3.0,   0.0, 0.0,  0.0,  0.0, -3.0,  0.0, 0.0,
       0.0,  0.0,  0.0,   0.0, 0.0,  1.0,  0.0,  0.0,  0.0, 0.0,
       0.0,  0.0,  1.0,   0.0, 0.0 >

       texture {
          pigment { Red }
          finish {
             phong 1.0
             phong_size 10
             ambient 0.2
             diffuse 0.8
          }
       }
   }

   sphere {
      <0, 0, 0>, 10
      texture { pigment { Clear } }
   }

   bounded_by { sphere { <0, 0, 0>, 11 } }
   rotate <0, 50, 10>
   translate 20*z
}

camera {
   location  <0.0, 0.0,-10.0>
   direction <0.0, 0.0, 1.0>
   up        <0.0, 1.0, 0.0>
   right     <4/3, 0.0, 0.0>
}

light_source { <-200, 300, -300>  colour White }
