Try out picadipity.com to see GreenSock in action! From your help I was able to build a control that features infinite looping of pictures using modifiers. The control also supports draggable and throwable behavior with stops at notches that centers the pictures.
I am using the following:
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.19.0/TweenMax.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.19.0/utils/Draggable.min.js"></script>
<script th:src="@{js/greensock/ModifiersPlugin.min.js}"></script>
<script th:src="@{js/greensock/ThrowPropsPlugin.min.js}"></script>
This has been great fun developing this control!