AnalyticalGraphicsInc/cesium — pull request #2316 by bagnell (2014-12-10 19:16:52+00:00)
Title: Improve polygon outline performance

* Instead of `concat`ing multiply arrays then copying the result to a `Float64Array`, compute the array length up front and index into it.
* Use a scratch array when subdividing the polygon edges.
* Avoid looping over inverse trig functions.