misc.txt

Past bugs:
- setTranform affects clearing canvas

- With baseline at ~0.3ms, drawing a massive base that fills the screen increases draw time to 
  ~4-6 ms. Deleting the base causes draw time to move down to ~1.5 ms but never back to normal.

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Performance:
100 update loops
100 collectibles

no spatial hash:
	baseline: 0-3ms
	peak:     110ms
	stream:   30-50ms
	
spatial hash:
	baseline: 0-6ms (20-30ms when moving mouse around)
	peak:     55ms
	stream:   10-35ms
- performance hit due to having to update hash objects
	- amplifies when moving cursor around for some reason

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- d3-quadtree:
var d3 = require("d3-quadtree");
let data = [{ x: 1, y: 2, mask: 0 }, { x: 3, y: 4, mask: 0 }, { x: 3, y: 3, mask: 1 }];
let tree = d3.quadtree()
    .x(function(d) { return d.x; })
    .y(function(d) { return d.y; })
    .addAll(data);
tree.x(function(d) { if (d.mask === 0) return d.x; })
    .y(function(d) { if (d.mask === 0) return d.y; });
let point = tree.find(3, 3, 3);
console.log(point);