BehaviourComposer: ignore everything before this.
Behaviours for modelling orbits authored by Maria Marinari and Ken Kahn. Here is the documentation.
Body elements
Body properties
Count number of orbits
Defining the x and y of velocity
Defining the x, y and z of velocity
Ellipse functions
Experiment reporters
Find C.O.M
Find total momentum
Initialise velocity using body properties
Orbital converter
Plot distances
Set my velocity
Set plot range
Update position
Update velocity
BehaviourComposer: ignore everything after this.