# recursive ray tracing
# refraction with Snell coefficient = 1.05

camera 
0.0 10.0 120.0 
0.0 0.0 0.0 
30.0 1.0 
1.0 3000.0 
0.0 
200 200

light -20.0 00.0 0.0 0.4 0.0
light  20.0 50.0 120.0 0.6 0.0
ambient 0.2
background  0.4 0.2 0.2

output output3dN105.ppm


identity
translate 0.0 1.0 0.0
scale 4.0 4.0 4.0
translate 0.0 5.0 100.0
sphere  0.5 0.5 0.8  none
0.6 
0.8  10
0.0 0.0
0.5 1.05 0.0

identity
translate 0.0 -1.0 0.0
scale 40.0 40.0 40.0
translate 0.0 0.0 -70.0
sphere 0.1 0.6 0.1  none 
0.4 
0.9  10
0.0 0.0
0.0 0.0 0.0

identity
translate 0.0 1.0 0.0
scale 40.0 40.0 40.0
translate 0.0 0.0 -70.0
sphere 0.6 0.1 0.6  none 
0.4 
0.9  10
0.0 0.0
0.0 0.0 0.0