public T Get(int x, int y, int z)
{
var searchLocation = _blockToInterval[General.BlockIndex(x, y, z, Width, Height)];
var index = _tree.BinarySearch(new Interval <T>(searchLocation, default(T)));
return(index < 0 ? default(T) : _tree[index].Data);
}
public void Update(IEnumerable <BatchUpdateItem <T> > updates)
{
foreach (var updateItem in updates)
{
var pos = updateItem.Position;
Update(General.BlockIndex(pos.x, pos.y, pos.z, Width, Height), updateItem.Item);
}
}
public bool Update([NotNull] IEnumerable <BatchUpdateItem <T> > items, int timeout = 0)
{
if (timeout <= 0)
{
_lock.EnterWriteLock();
}
else if (!_lock.TryEnterWriteLock(timeout))
{
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(false);
}
if (Interlocked.CompareExchange(ref _thread, Thread.CurrentThread, null) != null)
{
Debug.LogError("Batch update failed.");
_lock.ExitWriteLock();
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(false);
}
var success = false;
switch (_mode)
{
case List:
foreach (var pair in items)
{
var index = General.BlockIndex(pair.Position.x, pair.Position.y, pair.Position.z, Width);
_array[index] = pair.Item;
}
success = true;
break;
case Interval:
_intervalTree.Update(items);
if (_intervalTree.Modifications > ConfigManager.Properties.MaxIntervalTreeMods)
{
QueueDecompress();
}
success = true;
break;
case Empty:
Debug.LogError("CompressibleArray is empty and cannot update a item.");
break;
default:
Debug.LogError("Batch update failed. Mode is undefined");
break;
}
Interlocked.Exchange(ref _thread, null);
_lock.ExitWriteLock();
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(success);
}
public bool Update(int x, int y, int z, T item, int timeout = 0)
{
var @lock = _thread != Thread.CurrentThread;
if (@lock)
{
if (timeout <= 0)
{
_lock.EnterWriteLock();
}
else if (!_lock.TryEnterWriteLock(timeout))
{
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(false);
}
}
var success = false;
switch (_mode)
{
case List:
var index = General.BlockIndex(x, y, z, Width);
_array[index] = item;
success = true;
break;
case Interval:
_intervalTree.Update(x, y, z, item);
if (_intervalTree.Modifications > ConfigManager.Properties.MaxIntervalTreeMods)
{
QueueDecompress();
}
success = true;
break;
case Empty:
Debug.LogError("CompressibleArray is empty and cannot update a item.");
break;
default:
Debug.LogError("Update failed. Mode is undefined");
break;
}
if (@lock)
{
_lock.ExitWriteLock();
}
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(success);
}
public IEnumerable <BatchUpdateItem <T> > GetNeighborhood(int cX, int cY, int cZ, int radius = 1)
{
var @lock = _thread != Thread.CurrentThread;
if (@lock)
{
_lock.EnterReadLock();
}
for (var x = cX - radius; x < cX + radius; ++x)
{
for (var y = cY - radius; y < cY + radius; ++y)
{
for (var z = cZ - radius; z < cZ + radius; ++z)
{
if (x < 0 || x >= Width ||
y < 0 || y >= Height ||
z < 0 || z >= Width)
{
continue;
}
switch (_mode)
{
case List:
var index = General.BlockIndex(x, y, z, Width, Height);
yield return(new BatchUpdateItem <T>(new Vector3Int(x, y, z), _array[index]));
break;
case Interval:
yield return(new BatchUpdateItem <T>(new Vector3Int(x, y, z), _intervalTree.Get(x, y, z)));
break;
case Empty:
Debug.LogError("CompressibleArray is empty and cannot return a item.");
break;
default:
Debug.LogError("Get failed. Mode is undefined");
break;
}
}
}
}
if (@lock)
{
_lock.ExitReadLock();
}
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
}
public T Get(int x, int y, int z)
{
var @lock = _thread != Thread.CurrentThread;
if (@lock)
{
_lock.EnterReadLock();
}
T result;
switch (_mode)
{
case List:
var index = General.BlockIndex(x, y, z, Width, Height);
result = _array[index];
break;
case Interval:
result = _intervalTree.Get(x, y, z);
break;
case Empty:
result = default(T);
Debug.LogError("CompressibleArray is empty and cannot return a item.");
break;
default:
result = default(T);
Debug.LogError("Get failed. Mode is undefined");
break;
}
if (@lock)
{
_lock.ExitReadLock();
}
Interlocked.Exchange(ref _lastTouched, DateTime.Now.Ticks);
return(result);
}
public ColumnCompressor(int width, int height)
{
_width = width;
_height = height;
var key = new Vector3Int(_width, _height, _width);
if (!IntervalToBlockMappings.ContainsKey(key))
{
var count = _width * _height * _width;
var map = new int[count];
var inverse = new int[count];
var index = 0;
var flipY = false;
var flipZ = false;
for (var x = 0; x < _width; x++)
{
int incZ, z, limZ;
if (flipZ)
{
incZ = -1;
z = _width - 1;
limZ = 0;
}
else
{
incZ = 1;
z = 0;
limZ = _width;
}
while ((flipZ && z >= limZ) || (!flipZ && z < limZ))
{
int incY, y, limY;
if (flipY)
{
incY = 1;
y = 0;
limY = _height;
}
else
{
incY = -1;
y = _height - 1;
limY = 0;
}
while ((flipY && y < limY) || (!flipY && y >= limY))
{
var blockIndex = General.BlockIndex(x, y, z, _width, _height);
map[index] = blockIndex;
inverse[blockIndex] = index;
++index;
y += incY;
}
z += incZ;
flipY = !flipY;
}
flipZ = !flipZ;
}
IntervalToBlockMappings.TryAdd(key, map);
BlockToIntervalMappings.TryAdd(key, inverse);
}
IntervalToBlock = IntervalToBlockMappings[key];
BlockToInterval = BlockToIntervalMappings[key];
}
/// <summary>
/// Insertions are slow. Does not condense runs.
/// </summary>
public void Update(int x, int y, int z, T update)
{
Update(General.BlockIndex(x, y, z, Width, Height), update);
}
private static int GetNextIndex(ScanDirection direction, int chunkSize, ref Vector3Int workCoords)
{
var x = workCoords.x;
var y = workCoords.y;
var z = workCoords.z;
switch (direction)
{
case ScanDirection.Xyz:
workCoords.x = (x + 1) % chunkSize;
if (workCoords.x < x)
{
workCoords.y = (y + 1) % chunkSize;
if (workCoords.y < y)
{
workCoords.z = (z + 1) % chunkSize;
}
}
break;
case ScanDirection.Xzy:
workCoords.x = (x + 1) % chunkSize;
if (workCoords.x < x)
{
workCoords.z = (z + 1) % chunkSize;
if (workCoords.z < z)
{
workCoords.y = (y + 1) % chunkSize;
}
}
break;
case ScanDirection.Yxz:
workCoords.y = (y + 1) % chunkSize;
if (workCoords.y < y)
{
workCoords.x = (x + 1) % chunkSize;
if (workCoords.x < x)
{
workCoords.z = (z + 1) % chunkSize;
}
}
break;
case ScanDirection.Yzx:
workCoords.y = (y + 1) % chunkSize;
if (workCoords.y < y)
{
workCoords.z = (z + 1) % chunkSize;
if (workCoords.z < z)
{
workCoords.x = (x + 1) % chunkSize;
}
}
break;
case ScanDirection.Zxy:
workCoords.z = (z + 1) % chunkSize;
if (workCoords.z < z)
{
workCoords.x = (x + 1) % chunkSize;
if (workCoords.x < x)
{
workCoords.y = (y + 1) % chunkSize;
}
}
break;
case ScanDirection.Zyx:
workCoords.z = (z + 1) % chunkSize;
if (workCoords.z < z)
{
workCoords.y = (y + 1) % chunkSize;
if (workCoords.y < y)
{
workCoords.x = (x + 1) % chunkSize;
}
}
break;
default:
throw new ArgumentOutOfRangeException(nameof(direction));
}
return(General.BlockIndex(workCoords, chunkSize));
}
public BlockCompressor(int chunkSize)
{
_chunkSize = chunkSize;
if (!IntervalToBlockMappings.ContainsKey(_chunkSize))
{
var count = _chunkSize * _chunkSize * _chunkSize;
var mappingFunctions = new Dictionary <CompressionFlag, int[]>();
var bitsPerAxis = (int)Math.Ceiling(Math.Log(chunkSize, 2));
var hilbertToBlockIndex = new int[count];
for (uint index = 0; index < count; ++index)
{
var arr = HilbertCurve.HilbertAxes(index, bitsPerAxis);
var blockIndex = General.BlockIndex(arr.x, arr.y, arr.z, _chunkSize);
hilbertToBlockIndex[index] = blockIndex;
}
mappingFunctions[CompressionFlag.Hilbert] = hilbertToBlockIndex;
foreach (ScanDirection scanDirection in Enum.GetValues(typeof(ScanDirection)))
{
var workCoords = new Vector3Int();
var mapping = new int[count];
for (var i = 0; i < count; ++i)
{
mapping[GetNextIndex(scanDirection, _chunkSize, ref workCoords)] = i;
}
CompressionFlag compressionFlag;
switch (scanDirection)
{
case ScanDirection.Xyz:
compressionFlag = CompressionFlag.LinearXyz;
break;
case ScanDirection.Xzy:
compressionFlag = CompressionFlag.LinearXzy;
break;
case ScanDirection.Yxz:
compressionFlag = CompressionFlag.LinearYxz;
break;
case ScanDirection.Yzx:
compressionFlag = CompressionFlag.LinearYzx;
break;
case ScanDirection.Zxy:
compressionFlag = CompressionFlag.LinearZxy;
break;
case ScanDirection.Zyx:
compressionFlag = CompressionFlag.LinearZyx;
break;
default:
throw new ArgumentOutOfRangeException();
}
mappingFunctions[compressionFlag] = mapping;
}
IntervalToBlockMappings[chunkSize] = mappingFunctions;
BlockToIntervalMappings[chunkSize] = new Dictionary <CompressionFlag, int[]>();
foreach (var pair in IntervalToBlockMappings[chunkSize])
{
var mappingFunction = pair.Value;
var inverseFunction = new int[mappingFunction.Length];
for (int i = 0; i < mappingFunction.Length; i++)
{
inverseFunction[mappingFunction[i]] = i;
}
BlockToIntervalMappings[chunkSize][pair.Key] = inverseFunction;
}
}
_intervalToBlock = IntervalToBlockMappings[chunkSize];
_blockToInterval = BlockToIntervalMappings[chunkSize];
}
