public int GetNumTilesAcross(int zoom)
{
int x, y;
TMDLLWrapper.GetNumTiles(zoom, out x, out y);
return(x);
}
public int GetNumTilesDown(int zoom)
{
int x, y;
TMDLLWrapper.GetNumTiles(zoom, out x, out y);
return(y);
}
public byte[] LoadTile(int zoom, int x, int y)
{
int size;
byte[] array = null;
try
{
if (TMDLLWrapper.GetTileSize(out int width, out int height) != 1)
{
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.LoadTile'", "Returned error"));
}
size = width * height * 3; // determine size
array = new byte[size]; // allocate buffer
if (TMDLLWrapper.GetNumTiles(zoom, out int across, out int down) != 1)
{
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.LoadTile'", "Invalid Zoom Parameter"));
}
if (x < across && y < down)// check if coordinates are valid
{
if (TMDLLWrapper.GetTileImageAsRawJPG(zoom, x, y, array, size, ref size) != 1)
{
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.LoadTile'", "Error retrieving tiles"));
}
}
}
catch (DllNotFoundException e)
{
Console.WriteLine(e.Message);
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.LoadTile'", "TrueMarbleDLL.dll is missing"));
}
return(array); // will be null if failure
}
//gets max vertical tiles
public int GetNumTilesDown(int zoom)
{
int x, y;
TMDLLWrapper.GetNumTiles(zoom, out x, out y);
Console.WriteLine("Max valY for zoom {0} is {1}", zoom, y);
return(y);
}
//gets the max horizontal tiles
public int GetNumTilesAcross(int zoom)
{
int x, y;
TMDLLWrapper.GetNumTiles(zoom, out x, out y);
Console.WriteLine("Max valX for zoom {0} is {1}", zoom, x);
return(x);
}
/// <summary>
/// GetNumTilesAcross
/// returns number of tiles across depending on the level of zoom
/// </summary>
/// <param name="zoom"></param>
/// <returns>
/// returns across or -1 if error
/// aswell as a error message via reference
/// </returns>
public int GetNumTilesAcross(int zoom)
{
try
{
if (TMDLLWrapper.GetNumTiles(zoom, out int across, out int down) != 1)
{
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.GetNumTilesAcross'", "Invalid Zoom Parameter"));
}
return(across);
}
catch (DllNotFoundException e)
{
Console.WriteLine(e.Message);
throw new FaultException <DataServerFault>(new DataServerFault("Error in Function 'DGDataController.GetNumTilesAcross'", "TrueMarbleDLL.dll is missing"));
}
}
//Requires when the slider value is changed - Tells how many tiles are available at the particular zoom level(vertically)
public int GetNumTilesDown(int zoom)
{
int TilesAcross;
int TilesDown = 0;
try
{
TMDLLWrapper.GetNumTiles(zoom, out TilesAcross, out TilesDown);
}
//If cannot access the dll function
catch (DllNotFoundException)
{
System.Console.WriteLine("Unable to serve client - Could not find the dll");
}
return(TilesDown);
}
