AnalyticalGraphicsInc/cesium — pull request #306 by kring (2012-10-29 14:39:33+00:00)
Title: Add support for a minimum level to imagery providers

This pull requests adds a `getMinimumLevel` method to `ImageryProvider`. When mapping imagery to terrain, `ImageryLayer` will not map imagery less than the specified minimum level. This feature needs to be used with caution, though, because it's easy to bump into the max texture count with it.

This addresses an issue raised on the mailing list:
https://groups.google.com/forum/#!topic/cesium-dev/qiQdtnJRW18