Overview

This protocol defines the behaviour requirements for objects that wish to be notified whenever the transform of a node has changed.

This occurs when one of the transform properties (location, rotation & scale) of the node, or any of its structural ancestor nodes, has changed.

A transform listener can be registered with a node via the addTransformListener: method.

Each listener registered with a node will be sent the nodeWasTransformed: notification message when the globalTransformMatrix of this node is recalculated, or is set directly.