public static MapData ReadMapData(string path, BinaryFileMetadata metadata)
{
float[,] data = new float[metadata.GetColumns(), metadata.GetRows()];
float min = float.MaxValue, max = float.MinValue;
using (BinaryReader input = new BinaryReader(StreamUtil.GetFileStream(path))) {
for (int y = 0; y < metadata.GetRows(); y++)
{
for (int x = 0; x < metadata.GetColumns(); x++)
{
float next = ReadNext(input, metadata);
data[x, y] = next;
if (next >= lowestPossibleHeight)
{
min = Mathf.Min(min, next);
max = Mathf.Max(max, next);
}
}
}
}
metadata.SetMinHeight(min);
metadata.SetMaxHeight(max);
ReplaceNoDataValuesWithMinHeight(metadata, data);
return(new MapData(data, metadata));
}
public void MetaDataFromSampleFileWorks()
{
Assert.True(Mathf.Abs((float)metadata.GetCellsize() - 10.0F) < precision, "Cellsize not correct.");
Assert.True(metadata.GetColumns() == 10, "ncols not correct.");
Assert.True(metadata.GetRows() == 13, "nrows not correct.");
Assert.True(Mathf.Abs(metadata.GetMaxHeight() - 1960.91F) < precision, "maxheight not correct.");
Assert.True(Mathf.Abs(metadata.GetMinHeight() - 1951.887F) < precision, "minheight not correct.");
Assert.True(metadata.GetDataType() == BinaryDataType.Single, "Data type not correct.");
Assert.True(Mathf.Abs((float)(metadata.GetLowerLeftCornerX() - (-12492736.0119444))) < precision, "Lower left corner X value not correct.");
Assert.True(Mathf.Abs((float)(metadata.GetLowerLeftCornerY() - (4302859.27676796))) < precision, "Lower left corner Y value not correct.");
}
private static void ReplaceNoDataValuesWithMinHeight(BinaryFileMetadata metadata, float[,] data)
{
for (int x = 0; x < metadata.GetColumns(); x++)
{
for (int y = 0; y < metadata.GetRows(); y++)
{
if (data[x, y] < lowestPossibleHeight)
{
data[x, y] = metadata.GetMinHeight();
}
}
}
}