The Rotate handle is a simple handle that allows the rotation and
translation of a point.

Parameters:
    input       - A group field.  The centroid of this group is used
                  as the default origin.
    onoff       - Whether the handle is visible, 1 means visible.
    px, py, pz  - The pivot for the rotation.
    rx, ry, rz  - The Euler angles describing the rotation, in degrees.
    trs_order   - The translate/rotate/scale order.
    tx, ty, tz  - The translation described by the handle.
    xyz_order   - The order to combine the rx, ry, and rz channels in.

See Also: Pivot, Transformer
