function Origin(node) {
    Position.call(this, node);

    var initial = node.getOrigin();

    this._x.set(initial[0]);
    this._y.set(initial[1]);
    this._z.set(initial[2]);
}
Origin is a component designed to allow for smooth tweening
of where on the Node should be considered the origin for rotations and scales.

@class Origin
@augments Position

@param {Node} node Node that the Origin component will be attached to