public static Table3D TryParseValid(System.IO.Stream stream)
{
s_tableInfo3D.Reset();
s_tableInfo3D.location = (int)stream.Position;
s_tableInfo3D.countX = stream.ReadInt16BigEndian();
s_tableInfo3D.countY = stream.ReadInt16BigEndian();
s_tableInfo3D.rangeX.Pos = stream.ReadInt32BigEndian();
s_tableInfo3D.rangeY.Pos = stream.ReadInt32BigEndian();
s_tableInfo3D.rangeZ.Pos = stream.ReadInt32BigEndian();
// first byte matters, rest probably just alignment (zeroes), read all four in one go by little endian
s_tableInfo3D.tableType = (TableType)(stream.ReadInt32LittleEndian());
// Float type never has MAC floats so far, makes sense.
// Shortcut, does not hurt (valid) results though.
//if (TableType != TableType.Float)
{
// most but not all non-float tables have MAC floats:
s_tableInfo3D.multiplier = stream.ReadSingleBigEndian();
s_tableInfo3D.offset = stream.ReadSingleBigEndian();
if (s_tableInfo3D.IsRecordValid())
{
if (!s_tableInfo3D.hasMAC)
{
// must back off to adjust stream position for next possible struct
stream.Seek(-2 * FloatSize, System.IO.SeekOrigin.Current);
}
long afterInfoPos = stream.Position;
bool valuesOk = s_tableInfo3D.ReadValidateValues(stream);
if (!valuesOk)
{
//Console.Error.WriteLine ("Error in values");
}
stream.Seek(afterInfoPos, System.IO.SeekOrigin.Begin);
return(valuesOk ? s_tableInfo3D.Copy() : null);
}
else
{
return(null);
}
}
}
public static Table2D TryParseValid(System.IO.Stream stream)
{
s_tableInfo2D.Reset();
s_tableInfo2D.location = (int)stream.Position;
s_tableInfo2D.countX = stream.ReadInt16BigEndian();
// First byte matters, residual byte probably just zero for alignment.
// By reading as little endian word we read and verify all two bytes in one go.
s_tableInfo2D.tableType = (TableType)stream.ReadInt16LittleEndian();
s_tableInfo2D.rangeX.Pos = stream.ReadInt32BigEndian();
s_tableInfo2D.rangeY.Pos = stream.ReadInt32BigEndian();
// most but not all non-float tables have MAC floats:
s_tableInfo2D.multiplier = stream.ReadSingleBigEndian();
s_tableInfo2D.offset = stream.ReadSingleBigEndian();
long afterRecord = stream.Position;
if (s_tableInfo2D.IsRecordValid())
{
if (!s_tableInfo2D.hasMAC)
{
// must back off stream position for next possible struct
afterRecord -= 2 * FloatSize;
}
bool valuesOk = s_tableInfo2D.ReadValidateValues(stream);
// if (!valuesOk) {
// Console.Error.WriteLine ("2D: Error in values");
// }
stream.Position = afterRecord;
return(valuesOk ? s_tableInfo2D.Copy() : null);
}
else
{
return(null);
}
}
public static uint[] ReadValuesUInt32(System.IO.Stream stream, Range range)
{
stream.Seek(range.Pos, System.IO.SeekOrigin.Begin);
int count = range.Size / 4;
uint[] array = new uint[count];
for (int i = 0; i < array.Length; i++)
{
array [i] = (uint)stream.ReadInt32BigEndian();
}
return(array);
}