png 120 120 hw2sun1f.png

normal 2 0 -1
xyz    1 0 0

normal -1 2 -1
xyz    -1 1 1

normal -1 -2 -1
xyz    -1 -1 0

color 1 0.5 0.2
sunlight 4 1 -4

color 1 0.5 1
trif 1 2 3