public static float[] DecompressHeightMap(byte[] compressedBytes, float offset, float scale)
{
byte[] bytes = compressedBytes;
// Decompression not working with mono for some reason:
// MXPTests.CompressionTest.HeightMapCompression : System.IO.InvalidDataException : Invalid ZLib data.
/*using (MemoryStream memoryStream = new MemoryStream(compressedBytes))
* {
* using (GZipStream zipStream = new GZipStream(memoryStream, CompressionMode.Decompress))
* {
* using (MemoryStream outputStream = new MemoryStream())
* {
* CopyStream(zipStream, outputStream);
* bytes=outputStream.GetBuffer();
* }
* }
* }*/
float[] values = new float[bytes.Length / 2];
for (int i = 0; i < bytes.Length; i += 2)
{
short shortValue = 0;
EncodeUtil.Decode(ref shortValue, bytes, i);;
values[i / 2] = shortValue / scale + offset;
}
return(values);
}
public static byte[] CompressHeightMap(float[] values, float offset, float scale)
{
byte[] bytes = new byte[values.Length * 2];
for (int i = 0; i < values.Length; i++)
{
short shortValue = (short)((values[i] - offset) * scale);
EncodeUtil.Encode(ref shortValue, bytes, i * 2);
}
return(bytes);
// Decompression not working with mono for some reason:
// MXPTests.CompressionTest.HeightMapCompression : System.IO.InvalidDataException : Invalid ZLib data.
/*using (MemoryStream compressedStream = new MemoryStream())
* {
* using (GZipStream zipStream = new GZipStream(compressedStream, CompressionMode.Compress))
* {
* using (MemoryStream uncompressedStream=new MemoryStream(bytes))
* {
* CopyStream(uncompressedStream, zipStream);
* return compressedStream.GetBuffer();
* }
* }
* }*/
}
