03/12/2002
15-462 Graphics I
17
Other Forces
•
Unary
–
Gravity:
f
= m
g
–
Viscous drag:
f
= -k
v
•
N-ary
–
Spring:
f
= -k
d
•
Spatial interaction force
–
Collisions
–
v’ = v –
2(
v
¢
n
)
n
v
n
v’
