I love this, but it suffers from an issue I've observed in my own attempts to make mouse-based drawing tools in the browser with JavaScript. If you move your m

I love this, but it suffers from an issue I've observed in my own attempts to make mouse-based drawing tools in the browser with JavaScript. If you move your mouse too quickly, the low polling rate of events becomes evident because rather than showing a smooth curve, you see straight lines that are drawn between the two points that were captured for each event. This is my white whale. I don't currently have the math chops to fix this in my own implementations, but there are others who have succeeded where I have failed. For example, the web client/controller thingy for the game Drawful 2 by Jackbox has addressed this. Since you can't increase the polling rate in the browser and you can't arbitrarily read the mouse position during things like requestAnimationFrame, you're forced to interpolate the movement of the mouse given the past few events. They're using curves in Drawful 2 instead of straight bitmap-style canvas drawing like in the first Drawful. But beware, this has a downside. It's very easy to incorrectly interpolate the movement and exaggerate the curve, making it curvier than the actual movement of the mouse. I guess the web browser just wasn't designed with precision input capture in mind. But that doesn't mean we can't still aim for improvement. For a game like Drawful, more options are probably overkill. (They don't allow you to erase by design.) But for an art tool like this, it might be worth adding an option for input smoothing along with knobs to tweak to adjust the smoothing amount. Or not. I certainly can't fault you for not implementing such a feature given that I can't seem to get it to work.