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Per http://wiki.secondlife.com/wiki/Tips_for_Creating_Heightfields_and_Details_on_Terrain_RAW_Files#Notes_for_Creating_Height_Field_Maps_for_Second_Life
terrain heights up to 508 are possible on the LL grid (and were available on previous releases of OpenSimulator).
The obvious way to allow both this and equivalent -z values, is to rewiden the internal terrain height storage from short to int.
The memory tradeoff is most noticeable on the maximum 8192x8192 var region (equiv to 1024 normal regions), where it adds 128mb to resident use (128k on a normal region)
This is still better than the double used in previous releases.
This does not affect physics or data storage since they already use float and double respectively.
This may not be the final solution if we actually want to sacrifice -z, >327 or something else.
Relates to http://opensimulator.org/mantis/view.php?id=7076
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than everytime terrain is changed.
The TerrainModule now hooks the frame event and, if terrain has changed,
sends terrain updates to the clients. This polling pattern replaces
the previous push on change pattern and will make it easier to do per
client throttling and per scene presence terrain update ordering.
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now needed to get region size
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Also remove PI heightmap test as new heightmaps only have two significant digits.
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land object bitmaps. This fixes creation of child presences and the
editing of parcels.
Also lots of commented out debugging messages.
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Routines in Util to compute region world coordinates from region coordinates
as well as the conversion to and from region handles. These routines have
replaced a lot of math scattered throughout the simulator.
Should be no functional changes.
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compressed 2D database blob if a varregion.
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Add some debugging logs on region creation to report region size.
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stack.
Implement both LoadTerrain and StoreTerrain for all DBs.
Move all database blob serialization/deserialization into TerrainData.
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compression base computation.
Complete replacement of float[] for terrain heightmap with TerrainData instance.
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Constants into TerrainData.
Save compression factor with the terrain blob in the database.
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LLClientView to use same. This passes a terrain info class around rather than passing a one dimensional array thus allowing variable regions. Update the database storage for variable region sizes. This should be downward compatible (same format for 256x256 regions).
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TerrainCompressor needed to replace the one in libopenmetaverse that doesn't know about the larger terrain packets.
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