AnalyticalGraphicsInc/cesium — pull request #1950 by bagnell (2014-07-23 17:11:29+00:00)
Title: Texture atlas

* Combines `TextureAtlas` and `TextureAtlasBuilder`.
* Makes `TextureAtlas` and `BillboardCollection.textureAtlas` private.
* Removes `Billboard.imageIndex` and adds `Billboard.imageUrl` and `Billboard.image`.

For #1688.

The functions in `TextureAtlas` were changed to mimic those that were in `TextureAtlasBuilder` though it may be better to return promises. See the use of the `TextureAtlas` in `LabelCollection` which expects the callbacks to be executed before returning.