/// <summary>
/// Set the texture map for a point specified by sample coordinates.
/// The 4-byte array is map. The map can have 4 possible mappings associated
/// with it with one byte per map.
/// </summary>
/// <param name="sampleX"></param>
/// <param name="sampleZ"></param>
/// <param name="textureMap"></param>
/// <returns></returns>
public void SetSampleTextureMap(int sampleX, int sampleZ, byte[] textureMap)
{
int tileX;
int tileZ;
int xOff;
int zOff;
SampleToTileCoords(sampleX, sampleZ, out tileX, out tileZ, out xOff, out zOff);
if ((tileX < 0) || (tileX >= sizeXTiles) || (tileZ < 0) || (tileZ >= sizeZTiles))
{
return; // Ignore out-of-bounds modifications
}
TextureMosaicTile tile = tiles[tileX, tileZ] as TextureMosaicTile;
if (tile == null)
{
// This shouldn't happen
throw new Exception("Tile [" + tileX + "," + tileZ + "] not found for coord [" + sampleX + "," + sampleZ + "] while attempting to set textureMap to: " + textureMap);
}
tile.SetTextureMap(xOff, zOff, textureMap);
}
public string GetTexture(int worldXMeters, int worldZMeters, int sizeXMeters, int sizeZMeters, out float u1, out float v1, out float u2, out float v2)
{
worldXMeters = worldXMeters + xWorldOffsetMeters;
worldZMeters = worldZMeters + zWorldOffsetMeters;
int tileX = worldXMeters >> (tileShift + desc.MPSShift);
int tileZ = worldZMeters >> (tileShift + desc.MPSShift);
int tileSizeWorld = desc.TileSizeSamples << desc.MPSShift;
int tileMaskWorld = tileSizeWorld - 1;
int xoff = worldXMeters & tileMaskWorld;
int zoff = worldZMeters & tileMaskWorld;
u1 = (float)xoff / tileSizeWorld;
v1 = (float)zoff / tileSizeWorld;
u2 = (float)(xoff + sizeXMeters) / tileSizeWorld;
v2 = (float)(zoff + sizeZMeters) / tileSizeWorld;
if (tileX < 0 || tileX >= sizeXTiles || tileZ < 0 || tileZ >= sizeZTiles)
{
return("red-zero-alpha.png");
}
TextureMosaicTile tile = tiles[tileX, tileZ] as TextureMosaicTile;
if (tile == null)
{
throw new InvalidDataException("Unxpected state!");
}
return(tile.TextureName);
}
private void FireTerrainSplatChanged(MosaicTile tile, int worldXMeters, int worldZMeters, int sizeXMeters, int sizeZMeters)
{
if (m_changeNotificationEnabled && TerrainSplatChanged != null)
{
TextureMosaicTile textile = tile as TextureMosaicTile;
if (textile == null)
{
// Refresh all textures within the mosaic
// that have dirty texture images
RefreshTextures();
}
else
{
// Only refresh the given tile
textile.RefreshTexture();
}
TerrainSplatChanged(this, tile, worldXMeters, worldZMeters, sizeXMeters, sizeZMeters);
}
}
/// <summary>
/// Get the texture map for a point specified by sample coordinates
/// A 4-byte array is returned as the map. The map can have 4 possible
/// mappings associated with it with one byte per map.
/// </summary>
/// <param name="sampleX"></param>
/// <param name="sampleZ"></param>
/// <returns></returns>
public byte[] GetSampleTextureMap(int sampleX, int sampleZ)
{
int tileX;
int tileZ;
int xOff;
int zOff;
SampleToTileCoords(sampleX, sampleZ, out tileX, out tileZ, out xOff, out zOff);
if ((tileX < 0) || (tileX >= sizeXTiles) || (tileZ < 0) || (tileZ >= sizeZTiles))
{
return(new byte[4]);
}
TextureMosaicTile tile = tiles[tileX, tileZ] as TextureMosaicTile;
if (tile == null)
{
return(new byte[4]);
}
return(tile.GetTextureMap(xOff, zOff));
}