Those plugins are doing exactly what we asked for, especially Canvas.
But I'm using big layouts (3000~5000px) and it create a massive stuttering when drawing on such big canvas. (and I have a good computer ...)
Paster has no problem, though, but I can't draw a clean line with quads ... (maybe i'm wrong ?)
It has another problem : impossibility to delete the lines except if you clear the canvas.
In the end I switched back to particles ... It doesnt make lines but it can draw a path with dots ...