The Animation Transition allows the button to animate in its various states.
Animation transition types require an Animator Component attached to the Button. It can add a preexisting set of animations to a Button by dragging it onto the Button's Inspector, or you can make a whole new Animator Controller by selecting Auto Generate Animation. If you use a preexisting Animator Controller, you can simply assign the Animations to the individual states. However, if you generate a new Animator Controller, you can select the state from the list of Clips in the Animation window and edit them from that window. An example of making a Button with animated transitions is provided in the examples section of the text.
