size 640 480
color red 1 0 0
color blue .2 .2 .8
color white 1 1 1
phong_shader red_shader red red white 50
phong_shader blue_shader blue blue white 50
sphere A -1 0 0 .8 -
sphere B -1 0 0 .8 -
intersection - A B red_shader
sphere C 1 0 0 .8 -
sphere D 1 0 0 .8 -
union - C D blue_shader
point_light -2 7 3 white 100
point_light 3 5 -3 white 100
ambient_light white .3
enable_shadows 1
recursion_depth_limit 10
camera 0 1 4 0 0 0 0 1 0 70
