The Transformer handle allows an arbitrary transformation to be
described interactively.

Parameters:

    group_pivot - Whether to use the group centroid as the pivot.
    input       - A group field.  The centroid of this group is used
                  as the default origin.
    onoff       - Whether the handle is enabled, 1 means enable.
    px, py, pz  - The pivot of the transform.
    rx, ry, rz  - The Euler angles of the transform in degrees.
    sx, sy, sz  - The scale factors of the transform in each axis.
    trs_order   - The translate/rotate/scale order.
    tx, ty, tz  - The translate amount.
    uniform_scale - A uniform scale factor.
    xyz_order   - The order in which the rx, ry, and rz angles should
                  be combined.

See Also: Pivot, Rotate
