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830. By Staffan Gimåker on 2010-07-16

Made Og3dCache into a singleton.

Since the available graphics memory, and thus the appropriate amount of memory
to use for caching, the cache size setting is better exposed as a global
setting than a per-object setting.

829. By Staffan Gimåker on 2010-07-15

Tweak the cache parameters and batch size.

828. By Staffan Gimåker on 2010-07-15

Document the og3d classes in more detail.

827. By Staffan Gimåker on 2010-07-14

Change the behaviour of Og3dCache::set_max_size() to evict cache entries
until the new max size is met.

826. By Staffan Gimåker on 2010-07-14

Re-enabled node merging, which should now work properly.

825. By Staffan Gimåker on 2010-07-14

Move all actual rendering code to Og3dRenderContext.

This enables us to share much of the code whether rendering to a buffer for
caching or rendering things for immediate display. This commit also changes
non-cached drawing to worked with the same interleaved vertex format as cached
data.

A bug in how a node's occupancy belief was updated for non-leaf nodes was also
fixed. Previously, the subtree belief was only correctly updated when the new
belief propagated down the was larger or equal to the true subtree belief.

824. By Staffan Gimåker on 2010-07-13

Add experimental support for caching parts an og3d in video memory.

This removes the LOD-support since it does not integrate well with caching.

823. By Staffan Gimåker on 2010-07-09

Merge changes from trunk.

Also updated OccupancyGrid3D to use 8-bit colors since that's what's used by
default after merging.

822. By Staffan Gimåker on 2010-07-08

Added property adapters for most of the state in OccupancyGrid3D.

821. By Staffan Gimåker on 2010-07-07

Merge changes from trunk.