setFromRotationMatrix
Sets the angles of this Euler instance from a pure rotation matrix m (the upper 3x3 of which must be an unscaled rotation).
Return
A reference to this Euler instance.
Parameters
m
A 4x4 matrix whose upper 3x3 is a pure rotation matrix.
order
The order in which the axis rotations are applied.
update
Whether the onChange callback should be executed.