David Williams
d99ed5e624
Implemented morton encoding using standard bit-twidling approach.
2015-03-28 09:46:05 +01:00
David Williams
b027cf1a0c
Moved common code into function.
2015-03-21 16:22:23 +01:00
David Williams
d477bec540
Revert "Replaced Vector3D with integer as key to map."
...
This reverts commit e82d6beca1a5cf7e81c546e6dd0243f54ff5d3e6.
2015-03-21 14:41:15 +01:00
David Williams
672c375a7a
Revert "Work on using a bitfield to set up chunk key."
...
This reverts commit 8bd8f8ba7a91de21fd56d4350f3bf8403a84c4b3.
2015-03-21 14:41:10 +01:00
David Williams
5fc0317260
Revert "Added typedef for chunk key type."
...
This reverts commit 6419c5827bc99d91dd5e96acd17bd507a30dc106.
2015-03-21 14:41:04 +01:00
David Williams
92eaaae765
Revert "Decided to always use a 64-bit chunk key, rather than trying to make it configurable."
...
This reverts commit 69f6f4ac3713e7a9eee804773a516cc5c3412183.
2015-03-21 14:40:57 +01:00
David Williams
ceeb8f70ce
Revert "Going back to building key by shifting instead of using bitfield."
...
This reverts commit 0d638f98370907b5ffed6b3460e320f4f9b2cf52.
2015-03-21 14:40:49 +01:00
David Williams
0c619ebec7
Revert "Added typedef for ChunkKey."
...
This reverts commit 905ec27f47a3e2dc1cba3a3a384b2c7532dab03d.
2015-03-21 14:40:30 +01:00
David Williams
f574563672
Revert "New, safer method of packing which makes careful use of casting to avoid problems with e.g. signed integer sign extension."
...
This reverts commit fd451be2dd7b65671274791105e76bd6a31a0f79.
2015-03-21 14:40:11 +01:00
David Williams
fd451be2dd
New, safer method of packing which makes careful use of casting to avoid problems with e.g. signed integer sign extension.
2015-03-21 08:48:45 +01:00
David Williams
905ec27f47
Added typedef for ChunkKey.
2015-03-21 08:12:02 +01:00
David Williams
0d638f9837
Going back to building key by shifting instead of using bitfield.
2015-03-21 08:05:58 +01:00
David Williams
69f6f4ac37
Decided to always use a 64-bit chunk key, rather than trying to make it configurable.
2015-03-20 23:09:38 +01:00
David Williams
6419c5827b
Added typedef for chunk key type.
2015-03-20 16:59:25 +01:00
David Williams
8bd8f8ba7a
Work on using a bitfield to set up chunk key.
2015-03-20 15:48:46 +01:00
David Williams
e82d6beca1
Replaced Vector3D with integer as key to map.
...
Chunks of voxel data are stored in a map, and it is quite common to need to search the map for a particular chunk. The key type used to be a Vector3D (i.e. the position of the chunk in 3D space) which makes conceptual sense but is relatively slow. Using a Vector3D as a key seems to have overhead, probably in terms of copying and performing comparisons. It seems to be significantly faster to use an integer as a key, so we now take the 3D position and pack it into a single integer by bitshifting.
Naturally this reduces the range of positions we can store - a 32-bit int can only encode 3 x 10-bit values, which means our volume can only be 1024 chunks in each direction (with a chunk often being 32x32x32 voxels). This should still be large enough for most uses, but an upcoming change will allow 64-bit keys to be used (at least on 64-bit builds) which then allows 21 bits of precision per component. This is so large that it's almost infinite for any practical purposes.
2015-03-15 09:32:42 +01:00
David Williams
741234e4a5
Small speed improvement by storing variables separately (rather than in Vector3D) to void construction/comparison overhead.
2015-03-09 23:52:56 +01:00
David Williams
99d0a226c8
Tidying up.
2015-03-08 23:48:55 +01:00
David Williams
72abcd8e9c
Chunks are now stored with unique_ptr rather than shared_ptr.
2015-03-08 23:30:12 +01:00
David Williams
43c203a2c9
Removed declaration of function for which we already removed the definition.
2015-03-07 17:42:31 +01:00
David Williams
aaa6b1dc15
A PagedVolume must now always be provided with a Pager when it is constructed.
2015-03-07 17:01:07 +01:00
David Williams
5a5b2b3875
Spotted an optimization for computing the voxel position.
2015-03-06 23:03:38 +01:00
David Williams
2c0d9cb9e7
Moved contents of initialize() into constructor.
2015-03-05 23:51:16 +01:00
David Williams
c804190d84
Removed the ability to set the target memory usage after construction, and this is now just done through the constructor. I don't think the functionality was useful, and this simplifies more logic.
2015-03-05 23:42:50 +01:00
David Williams
89550fcd44
Fixed warnings.
2015-03-05 00:04:22 +01:00
David Williams
bd6efe8c3c
Stuff related to valid regions is being moved from BaseVolum to RawVolume, as PagedVolume is now infinite.
2015-03-04 22:42:14 +01:00
David Williams
bfc7dfdc1b
Removed the ability to specify a region in the PagedVolume's constructor, and updated the tests and examples where required.
2015-02-28 23:31:23 +01:00
David Williams
3ace735619
Work on removing wrap modes.
2015-02-27 13:48:31 +01:00
David Williams
64d010527b
Removed old getVoxelAt()/setVoxelAt() functions. they've been flagged as deprecated for a while now, and are replaced by just getVoxel()/setVoxel().
2015-02-27 11:07:15 +01:00
David Williams
049a77cd0c
Moved all headers from 'PolyVoxCore' to 'PolyVox', as we no longer have the core/util distinction.
2015-02-07 17:26:36 +01:00
