fromArray( array, offset = 0 ) {

		this._x = array[ offset ];
		this._y = array[ offset + 1 ];
		this._z = array[ offset + 2 ];
		this._w = array[ offset + 3 ];

		this._onChangeCallback();

		return this;

	}
Sets this quaternion's components from the given array.

@param {Array<number>} array - An array holding the quaternion component values.
@param {number} [offset=0] - The offset into the array.
@return {Quaternion} A reference to this quaternion.