AnalyticalGraphicsInc/cesium — pull request #24 by bagnell (2012-05-14 18:26:30+00:00)
Title: Improve performance for horizon views.

* Changes how tiles are prepared for rendering. When traversing the quad-tree, stop at highest resolution tile available and load higher resolution tiles if necessary.
* For horizon views, estimate the number of pixels the tile will contribute and use lower resolution tiles if it is not significant.