This class illustrates how to display round and flat globes side by side.
Applications using multiple World Wind windows simultaneously should instruct World Wind to share OpenGL and other
resources among those windows. Most World Wind classes are designed to be shared across
and will be shared automatically. But OpenGL resources are not automatically shared. To share them, a reference to a
previously created WorldWindow must be specified as a constructor argument for subsequently created WorldWindows.
Most World Wind
objects can be shared among WorldWindows. Those that cannot be shared
have an operational dependency on the WorldWindow they're associated with. An example is the
layer for on-screen navigation. Because this layer responds to input events within a specific
WorldWindow, it is not sharable. Refer to the World Wind Overview page for a list of layers that cannot be shared.