|
public static DecodePatch ( int patches, OpenMetaverse.BitPack bitpack, |
||
| patches | int | |
| bitpack | OpenMetaverse.BitPack | |
| header | ||
| size | int | |
| return | void | |
private void DecompressWind(Simulator simulator, BitPack bitpack, TerrainPatch.GroupHeader group)
{
int[] patches = new int[32 * 32];
// Ignore the simulator stride value
group.Stride = group.PatchSize;
// Each wind packet contains the wind speeds and direction for the entire simulator
// stored as two float arrays. The first array is the X value of the wind speed at
// each 16x16m block, second is the Y value.
// wind_speed = distance(x,y to 0,0)
// wind_direction = vec2(x,y)
// X values
TerrainPatch.Header header = TerrainCompressor.DecodePatchHeader(bitpack);
TerrainCompressor.DecodePatch(patches, bitpack, header, group.PatchSize);
float[] xvalues = TerrainCompressor.DecompressPatch(patches, header, group);
// Y values
header = TerrainCompressor.DecodePatchHeader(bitpack);
TerrainCompressor.DecodePatch(patches, bitpack, header, group.PatchSize);
float[] yvalues = TerrainCompressor.DecompressPatch(patches, header, group);
if (simulator.Client.Settings.STORE_LAND_PATCHES)
{
for (int i = 0; i < 256; i++)
{
simulator.WindSpeeds[i] = new Vector2(xvalues[i], yvalues[i]);
}
}
}
private void DecompressLand(Simulator simulator, BitPack bitpack, TerrainPatch.GroupHeader group)
{
int x;
int y;
int[] patches = new int[32 * 32];
int count = 0;
while (true)
{
TerrainPatch.Header header = TerrainCompressor.DecodePatchHeader(bitpack);
if (header.QuantWBits == TerrainCompressor.END_OF_PATCHES)
{
break;
}
x = header.X;
y = header.Y;
if (x >= TerrainCompressor.PATCHES_PER_EDGE || y >= TerrainCompressor.PATCHES_PER_EDGE)
{
Logger.Log(String.Format(
"Invalid LayerData land packet, x={0}, y={1}, dc_offset={2}, range={3}, quant_wbits={4}, patchids={5}, count={6}",
x, y, header.DCOffset, header.Range, header.QuantWBits, header.PatchIDs, count),
Helpers.LogLevel.Warning, Client);
return;
}
// Decode this patch
TerrainCompressor.DecodePatch(patches, bitpack, header, group.PatchSize);
// Decompress this patch
float[] heightmap = TerrainCompressor.DecompressPatch(patches, header, group);
count++;
try { OnLandPatchReceived(new LandPatchReceivedEventArgs(simulator, x, y, group.PatchSize, heightmap)); }
catch (Exception e) { Logger.Log(e.Message, Helpers.LogLevel.Error, Client, e); }
if (Client.Settings.STORE_LAND_PATCHES)
{
TerrainPatch patch = new TerrainPatch
{
Data = heightmap,
X = x,
Y = y
};
simulator.Terrain[y * 16 + x] = patch;
}
}
}