Circle Loop Scroll Rect is a component that make the UGUI items looping infinitely along an arc or a circle track.
Features:
+ Fixed number of UGUI elements for looping.
+ Easy to make a arc or circle looping track by placing UGUI elements.
+ Support Infinity content list with arbitrary length.
+ Support Infinity Vertical Looping(Top To Down, Bottom To Up).
+ Support Infinity Horizontal Looping(Left to Right, Right To Left).
