txts 200 200 hw5springtri- 120
gravity 0 -0.1 0

wall 0 1 0 3
plane 0 1 0 3
wall 1 0 0 3
wall -1 0 0 3
wall 0 0 1 8
plane 0 0 1 8
wall 0 0 -1 -2

color .6 .7 .8
sun 1 1 .5
color .4 .3 .2
sun -.5 1 0

radius 1
color .4 .4 .4
anchor 0 -4 -4.5  0 0.1 0

radius 2
anchor 0 -3.5 -4.5  0 0 0

radius 0.2
color 0 1 1
elasticity 0.5
mass 0.1
springconst 5
subsample 10
tri 18   -3 0 -3   3 0 -3   0 0 -7.5