This is an example of animaiton in our scene graph API. Here we see a contious Rotation. For this to work the programmer must implement a doFrame() function. In this do frame function the programmer can then either do a setRotation(), setTranslation(), setScaling() of an object. This methods can take different types of functions that will compute motion based on the clock, and also given parameters. These functions are periodic(),linear(),and cyclical().