simulated scrolling that bounces once it reaches the edge, and damps if you pull it outside the boundry.

gistfile1.txt

  var boundry = Physics.Boundry(0, 0, height, width)
  var draggable = drag({ boundryDamping: .2 }).bounds(boundry)
  
  var decelerate = phys.decelerate({ deceleration: 1000 }).bounds(boundry).start
  var spring = phys.spring({ deceleration: 1000 }).start
  
  draggable.pipe(phys)
  draggable.start()
    .then(decelerate)
    .then(spring)