choreo.ActionSym.__init__#

ActionSym.__init__()#

Defines a symmetry of the action functional.

Parameters:

  • BodyPerm (numpy.ndarray(shape = (nbody), dtype = np.intp)) – Permutation of the bodies.

  • SpaceRot (numpy.ndarray(shape = (geodim, geodim), dtype = np.float64)) – Isometry of space. This matrix is assumed orthogonal, which is not automatically checked (cf IsWellFormed()).

  • TimeRev (int) – A value of -1 denotes time reversal, and a value of 1 denotes no time reversal.

  • TimeShiftNum (int) – Numerator of the rational time shift.

  • TimeShiftDen (int) – Denominator of the rational time shift.

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