Create 'scratch space' canvas under pointer/touch point, to draw on

[AdrianRossouw]

This is an extra layer the size of the screen that the user's drawing will immediately show up on, and then it will disappear once the same points are sent back down the pipe from the server.

the layer will be slightly translucent, as to give the user subtle feedback about whether their changes have been committed, and if they are currently experiencing lag.

[AdrianRossouw]

I actually have an almost complete implementation of this already. will add it soon

[AdrianRossouw]

Here's the codepen my friend @lerouxb made when we started working on this project initially. it needs to be ported to famo.us.

http://codepen.io/lerouxb/pen/nBvCI?editors=001