MaterialRectArcTween constructor

MaterialRectArcTween({Rect begin, Rect end })

Creates a Tween for animating Rects along a circular arc.

The begin and end properties must be non-null before the tween is first used, but the arguments can be null if the values are going to be filled in later.

Implementation 

MaterialRectArcTween({
  Rect begin,
  Rect end,
}) : super(begin: begin, end: end);