this is a small node server using express and socket.io. you can start it with
node index.js. however, you should change the localhost in draw.html to
point to the IP of the Node instance, or your clients won't get a socket.io
connection.
once the server is up, connect to it through a browser and start drawing. many people can draw at once. you can rotate the environment with the left/right keys, and go forward/backward in the z-plane with the up/down keys.
unfortunately, there's only one room to draw in, and you can only clear it by restarting the server. also, other peoples' scribbles don't show up until you draw something yourself.
I made this for the first UVic Hackathing on 04. Nov. 2017. there are many awkward or hard to use features, in the spirit of the competition.