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- Larry Shultz wrote:
-
- > Actually the math is the easiest part when programming this type of
- > simulation. The math for gravity, mass, acceleration etc. has been
- > well understood for years.
-
- The *theory* has been well understood for 300 years, but don't forget
- that Newton had to invent calculus to express it. For any but the most
- contrived problems, the calculations are not trivial. On top of that,
- we're talking about doing them *in reverse*. Ideally, the animator
- wants to be able to specify initial and final positions as constraints
- and allow the computer to figure out what dynamics are required. The
- numerical techniques for doing that haven't really been invented yet.
-
- - Ernie
-
-