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
}
public byte[] LoadTile(int zoom, int x, int y)
{
int iBufSize, iRetSize;
byte[] newBuf; //Buffer to hold the raw JPEG data.
iBufSize = GetTileWidth() * GetTileHeight() * 3;
newBuf = new byte[iBufSize]; //Allocating enough size for the buffer to hold the JPEG tile.
if (TMDLLWrapper.GetTileImageAsRawJPG(zoom, x, y, newBuf, iBufSize, out iRetSize) == 0) //checks whether any fault has occured in loading the tile.if fault occurs 0 is returned else 1.
{
throw new FaultException("Could not get tile -zoom , x or y are probably out of range");
}
return(newBuf);
}
public byte[] LoadTile(int zoom, int x, int y)
{
int h;
int w;
TMDLLWrapper.GetTileSize(out w, out h);
byte[] imageBuf;
int jpgSize;
int buffsize = w * h * 3;
imageBuf = new byte[buffsize];
TMDLLWrapper.GetTileImageAsRawJPG(zoom, x, y, imageBuf, buffsize, out jpgSize);
return(imageBuf);
}
public byte[] LoadTile(int zoom, int x, int y)
{
int h, w, jpgSize;
byte[] imageBuf;
//gets the size of the tile
TMDLLWrapper.GetTileSize(out w, out h);
int buffsize = w * h * 3;
imageBuf = new byte[buffsize];
//gets the raw jpg file
TMDLLWrapper.GetTileImageAsRawJPG(zoom, x, y, imageBuf, buffsize, out jpgSize);
return(imageBuf);
}
//This methods selects the particular tile at a partcular zoom level and coordinates.
//Then puts the image in a buffer and returns it.
public byte[] LoadTiles(int zoom, int x, int y)
{
int buffSize, imgSize;
int height = 0;
int width = 0;
try
{
TMDLLWrapper.GetTileSize(out width, out height);
}
//If cannot access the dll function
catch (DllNotFoundException)
{
System.Console.WriteLine("Unable to serve client - Could not find the dll");
}
//Overestimating buffer size to make sure it's big enough to hold tile
buffSize = width * height * 3;
//Creating a buffer to holf raw JPEG data
byte[] rawJPEG = new byte[buffSize];
try
{
if (TMDLLWrapper.GetTileImageAsRawJPG(zoom, x, y, rawJPEG, buffSize, out imgSize) == 0)
{
System.Console.WriteLine("Possible navigation for tiles out of range detected");
}
}
//If cannot access the dll function
catch (DllNotFoundException)
{
System.Console.WriteLine("Unable to serve client - Could not find the dll");
}
return(rawJPEG);
}
