AnalyticalGraphicsInc/cesium — pull request #286 by kring (2012-10-12 15:31:11+00:00)
Title: Imagery Layers

Adds the ability to layer imagery from multiple sources and adjust the alpha of each independently. It also has a new architecture for rendering the surface of the globe that is a big step toward rendering terrain. For starters, check out the two new Sandcastle apps: "Imagery Layers" and "Map Projections".

Most of the action happens (or at least starts) in CentralBodySurface.js. If you want to understand how it works, the (four line) update function is the place to start.

There is no shortage of additional things that could be done, but I think this is a significant improvement from master and is worthy of a review.