png 120 120 hw2shininess.png normal 1 1 -1 xyz -1 -1 1 normal 1 -1 -1 xyz -1 1 1 normal -1 -1 -1 xyz 1 1 1 normal -1 1 -1 xyz 1 -1 1 normal 0 0 -1 xyz 0 0 0 xyz 0 0 -1 color 0.2 0.2 0.2 bulb -1 xyz 2 -1 -1 color 1 0 0 bulb -1 xyz -3 -4 1 color 0 1 1 bulb -1 color 1 1 1 trif 1 2 5 shininess 160 trif 2 3 5 color 0.5 0.5 0.5 trif 3 4 5 shininess 240 trif 4 1 5