throws IOException
{
int[] heights = new int[tileSize];
+ int dataSize = 2 * tileSize;
+ byte[] buffer = new byte[dataSize];
// Read entire file contents into one byte array
- for (int i = 0; i < heights.length; i++)
+ int alreadyRead = 0;
+ while (alreadyRead < dataSize)
{
- heights[i] = inStream.read() * 256 + inStream.read();
- if (heights[i] >= 32768) {heights[i] -= 65536;}
+ alreadyRead += inStream.read(buffer, alreadyRead, dataSize - alreadyRead);
+ }
+ for (int i = 0; i < tileSize; i++)
+ {
+ // Bytes are signed. Cast high-order to int with sign
+ // extension, and clamp low-order to its unsigned range
+ heights[i] = buffer[2 * i] * 256 + (0xff & buffer[2 * i + 1]);
}
// Close stream
inStream.close();