Shorthand functions for describing dependencies

\brief Reset data (in case the grid is being reused)

Set all elements to zero

Set all elements to zero

\brief Set all components to zero

\brief Set all components to zero (null quaternion)

\brief Set the q0 component to 1 and the others to 0 (quaternion representing no rotation)

re-enable children features (and increase ref count accordingly) So free_children_deps() can be called whenever an object becomes inactive

Default constructor

\brief Rotate v through this quaternion (put it in the rotated reference frame)

Default constructor

Scale the weight with this factor (by default 1.0 is used)

The position to look for the closest periodic image ref_pos The reference position

\brief Set all components to a scalar

"Constructor" after Euler angles (in radians) http://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_angles

Set the sizes in each direction

re-initialize data where needed

(Re)initialize the output files (does not write them yet)

Reimplemented to work around MS compiler issues

\brief Return the spin angle (in degrees) with respect to the provided axis (which MUST be normalized)

Return the current step number from the beginning of the whole calculation

Return the current step number from the beginning of this run

The array of step numbers, with shape = (n,)

Get a pointer to the implementation of the given command

Print a short summary of the contents of the object