Michael Dobekidis has published a new code based tutorial that shows how to create nodes, with lines connecting them, and tween them around:
"What this effect does is to make tweening of nodes and the lines connected to those nodes move as well. I’m using Phaserjs for this and depending on your version of the browser it will show as either WebGL or Canvas."
It's a subtle but impressive effect, useful for a number of cases.