private static Heightmap ReadHeader(StreamReader reader)
{
var result = new Heightmap();
result.Columns = int.Parse(ReadHeader(reader, "ncols"));
result.Rows = int.Parse(ReadHeader(reader, "nrows"));
ReadHeader(reader, "xllcorner");
ReadHeader(reader, "yllcorner");
result.CellSize = ParseFloat(ReadHeader(reader, "cellsize"));
result.NoDataValue = ParseFloat(ReadHeader(reader, "NODATA_value"));
result.Data = new NDArray <float>(new Shape(result.Rows, result.Columns));
return(result);
}
public static Func <float, Gray16> FullRange16(Heightmap heightmap)
{
var min = heightmap.Data.min <float>();
var max = heightmap.Data.max <float>();
if (min == max)
{
return(v => new Gray16());
}
var delta = max - min;
return(v =>
{
v -= min;
v /= delta;
v *= 65535;
return new Gray16((ushort)v);
});
}
