#include "colors.inc"
#include "stones.inc"

#declare T = 0.5858;

camera {
  location <1.5,1,-7>
  look_at <1.5,1,2>
}

sphere {
#switch(clock)
#range(0,T)
#local X = clock / T;
  <0,0,2> + X*X*(3-2*X)*<2,1,0> + X*X*(X-1)*<1.5,0.25,0>
#break
#range(T,1)
#local X = (clock - T) / (1 - T);
  <0,0,2> + 
  (1-X)*(1-X)*(1+2*X)*<2,1,0> + 
  X*(1-X)*(1-X)*<1.5,0.25,0>/sqrt(2) + 
  X*X*(3-2*X)*<3,0.5,0>
#end
  0.4
  texture {
    pigment { color Yellow }
    finish { specular 0.9 roughness 0.02 }
  }
}

sphere {
  <0,0,2>,0.2
  texture {
    pigment { rgb <0.8,0.9,0.6> }
  }
}

sphere {
  <2,1,2>,0.2
  texture {
    pigment { rgb <0.8,0.9,0.6> }
  }
}

sphere {
  <3,0.5,2>,0.2
  texture {
    pigment { rgb <0.8,0.9,0.6> }
  }
}

intersection {
  plane { <0, 0, -1>, -4 }
  cylinder { <1.5,0.5,3>, <1.5,0.5,5>, 5 }
  texture { pigment { rgb <0.7,0.7,1.0>  } }
  finish { ambient 0.6 }
}

light_source { <2, 4, -3> color White}