Christopher Willis-Ford f6b78b2216 Picking improvements
- Increased canvas border in demo.html to make it more obvious if future
  code forgets to compensate for the border.
- Fixed picking code to compensate for a border around the canvas.
- Completed support for picking with a touch larger than a single point.
2016-05-31 14:00:39 -07:00
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2016-05-31 14:00:39 -07:00
2016-05-31 14:00:39 -07:00