Utility functions

DirectBase.jacobi(coord, mass)

compute jacobi coordinates from real coordinates

DirectBase.kick(body, kick, i=None)

Apply kick to a body

Parameters:

• body (int) – index of body to kick

• kick – kick velocity vector for body (cm/s)

• i – index where to apply kick

  None

  True if self.y is missing else False

  True

  use self.y0

  False

  use self.y

  <number>

  use that index in self.y