My work and my paint app of nears 10 thousand of lines of code in js/html5/css : essaie.fr/
But me I use the fact that html can create a matrix of pixels, to work pixels by pixels, and I created a system at a moment where if you click on a canvas you create a matrix of pixels to be used on another matrix of pixels to making your own brush, but it's slower that your solution, my app is in black and white to be used with a eink screens/ereader, and I tried to implements all of tools than an artist can image, and finished by to try to reinvent the wheel. I search few scripts in C to translate in JS to implements more features as an antialiasing post filter, but it's difficult to find documentation to do something beyond the documentation as MDN documentation and others tutorials on the web.
My work and my paint app of nears 10 thousand of lines of code in js/html5/css : essaie.fr/
But me I use the fact that html can create a matrix of pixels, to work pixels by pixels, and I created a system at a moment where if you click on a canvas you create a matrix of pixels to be used on another matrix of pixels to making your own brush, but it's slower that your solution, my app is in black and white to be used with a eink screens/ereader, and I tried to implements all of tools than an artist can image, and finished by to try to reinvent the wheel. I search few scripts in C to translate in JS to implements more features as an antialiasing post filter, but it's difficult to find documentation to do something beyond the documentation as MDN documentation and others tutorials on the web.
Wow, that is impressive! I don't think JS can handle advanced transforms like antialiasing, but keep working on it. It is very sophisticated!
My app is a bit simpler since it's done for a hackathon in a few days, but I could also add more functionalities later down the line.