16:32:47dimbtw my little viz are both at https://github.com/dimitri/AdventOfCode
16:33:33dimthe second one is calling into draw-rectangle hundreds of thousands of times, that's very slow, but I don't care very much and it gives a nice animation
16:33:51dimOTOH it seems to be doing that twice at redisplay time, which I'm not sure why
19:22:58jackdanieldim: please report a bug - I vaguely remember I've noticed that when working on pane backgrounds that we redraw everything twice for some reasons (but was debugging something else)
20:18:14dimI'm calling draw-rectangle* 97656 times, but without exposing as many objects, just using the pane as a dumb display, maybe that's the problem