AnalyticalGraphicsInc/cesium — pull request #195 by mramato (2012-08-30 00:25:46+00:00)
Title: Clean up AxisAlignedBoundingBox.

1. Make it behave the same as other bounding boxes (contruction defaults to empty)
2. Clean up doc and tests.
3. Make it re-use objects as much as possible to reduce memory pressure.