///<summary>
///Decode, decompress, and reorder rows of global tile IDs
///</summary>
static Layer.Chunk ParseChunk(
string encoding,
string compression,
string data,
int width,
string orientation
)
{
// Decode
byte[] input;
switch (encoding)
{
case "base64": input = Convert.FromBase64String(data); break;
default: throw new NotImplementedException("Encoding: " + (encoding ?? "xml"));
}
// Decompress
byte[] output;
switch (compression)
{
case null: output = input; break;
case "gzip": output = CompressionHelper.DecompressGZip(input); break;
case "zlib": output = CompressionHelper.DecompressZlib(input); break;
default: throw new NotImplementedException("Compression: " + compression);
}
// Parse bytes as uint32 global IDs, reordered according to cell layout.
var gids = new uint[output.Length / 4];
Buffer.BlockCopy(output, 0, gids, 0, output.Length);
switch (orientation)
{
case "orthogonal": return(new Layer.Chunk {
gids = ArrayHelper.Reverse(gids, stride: width)
});
case "isometric": return(new Layer.Chunk {
gids = ArrayHelper.Swizzle(gids, stride: width).Reverse().ToArray()
});
case "hexagonal": return(new Layer.Chunk {
gids = gids
});
default: throw new NotImplementedException($"Orientation: {orientation}");
}
}
///<summary>Decode, decompress, and reorder rows of global tile IDs</summary>
uint[] ParseGIDs(string encoding, string compression, string data, int width, GridLayout.CellLayout layout)
{
// Decoding
byte[] input;
switch (encoding)
{
case "base64": input = Convert.FromBase64String(data); break;
default: throw new NotImplementedException("Encoding: " + (encoding ?? "xml"));
}
// Decompression
byte[] output;
switch (compression)
{
case null: output = input; break;
case "gzip": output = CompressionHelper.DecompressGZip(input); break;
case "zlib": output = CompressionHelper.DecompressZlib(input); break;
default: throw new NotImplementedException("Compression: " + compression);
}
// Parse bytes as uint32 gids
var gids = new uint[output.Length / 4];
Buffer.BlockCopy(output, 0, gids, 0, output.Length);
if (layout == GridLayout.CellLayout.Rectangle)
{
return(ArrayHelper.Reverse(gids, stride: width));
}
else if (layout == GridLayout.CellLayout.Isometric)
{
return(ArrayHelper.Swizzle(gids, stride: width).Reverse().ToArray());
}
else
{
return(gids);
}
}
