void GetStats(System.Collections.Generic.List <float> input, out float mean, out float median, out float min, out float max)
{
mean = input.Average();
min = input.Min();
max = input.Max();
median = input.OrderBy(sample => sample).ToList().ElementAt(input.Count / 2);
}
public override void Write()
{
MapChunkData chunkData = GetMapChunkData(Chunk);
int len;
byte[] chunkCompressed = CompressChunkData(chunkData.Data, chunkData.Data.Length, out len);
SetCapacity(18 + len);
Writer.Write(Coords.ChunkX);
Writer.Write(Coords.ChunkZ);
Writer.Write(false); // Ground Up Continous
Writer.Write((ushort)chunkData.PrimaryBitMask);
Writer.Write((ushort)0); // Add BitMask
Writer.Write(len);
Writer.Write(chunkCompressed, 0, len);
#if PROFILE_MAPCHUNK
start = DateTime.Now;
comp = new byte[DataDimension];
// Original Java compression version
//java.util.zip.Deflater deflater = new java.util.zip.Deflater(-1);
//try
//{
// deflater.setInput(data);
// deflater.finish();
// len = deflater.deflate(comp);
//}
//finally
//{
// deflater.end();
//}
end = DateTime.Now;
TimeSpan jTime = end - start;
int jLength = len;
writeDiffsLength.Add(deflateLength - jLength);
writeDiffsTime.Add(deflateTime.TotalMilliseconds - jTime.TotalMilliseconds);
Console.WriteLine("Avg {0}, {1}", writeDiffsLength.Average(), writeDiffsTime.Average());
#endif
}
public override void Write()
{
int dataDim = (Chunk.SectionsNum * Section.BYTESIZE) + 256; // (Number of sections * (Section dimension + Add array) + Biome array
byte[] data = new byte[dataDim];
/*byte[] types = new byte[0];
* byte[] metadata = new byte[0];
* byte[] blockLight = new byte[0];
* byte[] skyLight = new byte[0];
*
* byte[] tempBlockLight = new byte[2048];
* byte[] tempSkyLight = new byte[2048];
*
* int primaryBitMask = 0;
* ushort mask = 1;
*
* for(int i = 0; i < 16; ++i)
* {
* Section currentSection = Chunk.Sections[i];
* if(currentSection != null && currentSection.NonAirBlocks > 0)
* {
* types = currentSection.Types.Concat(types).ToArray();
* metadata = currentSection.Data.Data.Concat(metadata).ToArray();
*
* Buffer.BlockCopy(Chunk.Light.Data, i * Section.HALFSIZE, tempBlockLight, 0, Section.HALFSIZE);
* Buffer.BlockCopy(Chunk.SkyLight.Data, i * Section.HALFSIZE, tempSkyLight, 0, Section.HALFSIZE);
*
* blockLight = tempBlockLight.Concat(blockLight).ToArray();
* skyLight = tempSkyLight.Concat(skyLight).ToArray();
*
* primaryBitMask |= mask;
* }
*
*
* mask <<= 1;
* }
*
* byte[] data = types.Concat(metadata).Concat(blockLight).Concat(skyLight).ToArray();*/
int halfSize = Chunk.SectionsNum * Section.HALFSIZE;
int offsetData = Chunk.SectionsNum * Section.SIZE;
int offsetLight = offsetData + halfSize;
int offsetSkyLight = offsetLight + halfSize;
int primaryBitMask = 0;
ushort mask = 1;
int sectionIndex = 0;
for (int i = 0; i < 16; ++i)
{
Section currentSection = Chunk.Sections[i];
//int typeIndex = i*Section.SIZE;
if (currentSection != null && currentSection.NonAirBlocks > 0)
{
Buffer.BlockCopy(currentSection.Types, 0, data, sectionIndex * Section.SIZE, Section.SIZE);
Buffer.BlockCopy(currentSection.Data.Data, 0, data, offsetData + (sectionIndex * Section.HALFSIZE),
Section.HALFSIZE);
Buffer.BlockCopy(Chunk.Light.Data, i * Section.HALFSIZE, data, offsetLight + (sectionIndex * Section.HALFSIZE),
Section.HALFSIZE);
Buffer.BlockCopy(Chunk.SkyLight.Data, i * Section.HALFSIZE, data, offsetSkyLight + (sectionIndex * Section.HALFSIZE),
Section.HALFSIZE);
primaryBitMask |= mask;
++sectionIndex;
}
mask <<= 1;
// TODO: we leave add array and biome array to 0 (ocean), we need to change the chunk generator accordingly
}
/*for (int j = 0; j < Chunk.SkyLight.Data.Length; ++j)
* {
* Logger.Log(LogLevel.Info, "-" + Chunk.SkyLight.Data[j]);
* }
* Console.WriteLine(" ");*/
/*Chunk.Types.CopyTo(data, i);
* i += Chunk.Types.Length;
*
* Chunk.Data.Data.CopyTo(data, i);
* i += Chunk.Data.Data.Length;
*
* Chunk.Light.Data.CopyTo(data, i);
* i += Chunk.Light.Data.Length;
*
* Chunk.SkyLight.Data.CopyTo(data, i);*/
byte[] comp = new byte[data.Length];
int len;
#if PROFILE_MAPCHUNK
DateTime start = DateTime.Now;
#endif
// The ZlibStream gives up to 3ms faster with approx. 10bytes larger, but currently has a bug
// need to reproduce and post on codeplex DotNetZip site.
//comp = ZlibStream.CompressBuffer(data);
//len = comp.Length;
//try
//{
// byte[] testout = ZlibStream.UncompressBuffer(comp);
//}
//catch (Exception)
//{
// // TODO: add some code to generate test case for DotNetZip issue
// throw;
//}
// Compression level 5 gives 0.3ms faster than the Java version, and exact same size
// Using the static instance gives another 0.3ms
Deflater deflater;
DeflaterPool.TryPop(out deflater);
if (deflater == null)
{
deflater = new Deflater(5);
}
deflater.SetInput(data);
deflater.Finish();
len = deflater.Deflate(comp);
deflater.Reset();
DeflaterPool.Push(deflater);
#if PROFILE_MAPCHUNK
DateTime end = DateTime.Now;
TimeSpan deflateTime = end - start;
int deflateLength = len;
Console.WriteLine("1: {0}->{1}bytes in {2}ms", data.Length, deflateLength, deflateTime);
#endif
SetCapacity(22 + len);
Writer.Write(Coords.ChunkX);
Writer.Write(Coords.ChunkZ);
Writer.Write(false); // Ground Up Continous
Writer.Write((ushort)primaryBitMask);
Writer.Write((ushort)0); // Add BitMask
Writer.Write(len);
Writer.Write(0); // Unused
Writer.Write(comp, 0, len);
#if PROFILE_MAPCHUNK
start = DateTime.Now;
comp = new byte[DataDimension];
// Original Java compression version
//java.util.zip.Deflater deflater = new java.util.zip.Deflater(-1);
//try
//{
// deflater.setInput(data);
// deflater.finish();
// len = deflater.deflate(comp);
//}
//finally
//{
// deflater.end();
//}
end = DateTime.Now;
TimeSpan jTime = end - start;
int jLength = len;
writeDiffsLength.Add(deflateLength - jLength);
writeDiffsTime.Add(deflateTime.TotalMilliseconds - jTime.TotalMilliseconds);
Console.WriteLine("Avg {0}, {1}", writeDiffsLength.Average(), writeDiffsTime.Average());
#endif
}
