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change the encapsulation of compressed land patchs in llUDP packets

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UbitUmarov
2015-09-23 00:01:32 +01:00
parent 778793d77f
commit ccfb561e8d
2 changed files with 64 additions and 22 deletions
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67
OpenSim/Region/Framework/Scenes/TerrainCompressor.cs
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@@ -27,9 +27,11 @@
/* Freely adapted from the Aurora version of the terrain compressor.
* Copyright (c) Contributors, http://aurora-sim.org/, http://opensimulator.org/
* Aurora version created from libOpenMetaverse Library terrain compressor
*/
using System;
using System.Collections.Generic;
using System.Reflection;
using log4net;
@@ -156,15 +158,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
/// <returns></returns>
public static LayerDataPacket CreateLandPacket(TerrainData terrData, int[] x, int[] y, byte type)
{
LayerDataPacket layer = new LayerDataPacket {LayerID = {Type = type}};
TerrainPatch.GroupHeader header = new TerrainPatch.GroupHeader
{Stride = STRIDE, PatchSize = Constants.TerrainPatchSize};
LayerDataPacket layer = new LayerDataPacket();
layer.LayerID.Type = type;
byte[] data = new byte[x.Length * Constants.TerrainPatchSize * Constants.TerrainPatchSize * 2];
BitPack bitpack = new BitPack(data, 0);
bitpack.PackBits(header.Stride, 16);
bitpack.PackBits(header.PatchSize, 8);
bitpack.PackBits(STRIDE, 16);
bitpack.PackBits(Constants.TerrainPatchSize, 8);
bitpack.PackBits(type, 8);
for (int i = 0; i < x.Length; i++)
@@ -178,7 +178,62 @@ namespace OpenSim.Region.ClientStack.LindenUDP
return layer;
}
public static List<LayerDataPacket> CreateTerrainPatchsPacket(TerrainData terrData, int[] x, int[] y)
{
List<LayerDataPacket> ret = new List<LayerDataPacket>();
// normal or large region
byte landPacketType;
if (terrData.SizeX > Constants.RegionSize || terrData.SizeY > Constants.RegionSize)
landPacketType = (byte)TerrainPatch.LayerType.LandExtended;
else
landPacketType = (byte)TerrainPatch.LayerType.Land;
//create packet and global header
LayerDataPacket layer = new LayerDataPacket();
layer.LayerID.Type = landPacketType;
byte[] data = new byte[x.Length * Constants.TerrainPatchSize * Constants.TerrainPatchSize * 2];
BitPack bitpack = new BitPack(data, 0);
bitpack.PackBits(STRIDE, 16);
bitpack.PackBits(Constants.TerrainPatchSize, 8);
bitpack.PackBits(landPacketType, 8);
for (int i = 0; i < x.Length; i++)
{
CreatePatchFromHeightmap(bitpack, terrData, x[i], y[i]);
if (bitpack.BytePos > 1000 && i != x.Length - 1)
{
//finish this packet
bitpack.PackBits(END_OF_PATCHES, 8);
layer.LayerData.Data = new byte[bitpack.BytePos + 1];
Buffer.BlockCopy(bitpack.Data, 0, layer.LayerData.Data, 0, bitpack.BytePos + 1);
ret.Add(layer);
// start another
layer = new LayerDataPacket();
layer.LayerID.Type = landPacketType;
bitpack = new BitPack(data, 0);
bitpack.PackBits(STRIDE, 16);
bitpack.PackBits(Constants.TerrainPatchSize, 8);
bitpack.PackBits(landPacketType, 8);
}
}
bitpack.PackBits(END_OF_PATCHES, 8);
layer.LayerData.Data = new byte[bitpack.BytePos + 1];
Buffer.BlockCopy(bitpack.Data, 0, layer.LayerData.Data, 0, bitpack.BytePos + 1);
ret.Add(layer);
return ret;
}
// Unused: left for historical reference.
// nopes.. in use by clouds and wind
public static void CreatePatch(BitPack output, float[] patchData, int x, int y, int pRegionSizeX, int pRegionSizeY)
{
TerrainPatch.Header header = PrescanPatch(patchData);