//-----------------------------------------------------------------------------
private void Initialize(String prmFile, TcTileBlockInfoCollection prmInfo)
{
OutputFile = prmFile;
Info = prmInfo;
GridCount = (Int32)Math.Ceiling(TileSize * 1.0 / GridSize);
MinZ = Double.MaxValue;
MaxZ = Double.MinValue;
MaxRowsInGridBlock = (Int32)Math.Floor(TcConstants.MaxBytesToLoadInTorBlock * 1.0 / (Info.TileInfo.Col * GridCount * sizeof(Single)));
NumberOfGridBlocks = (Int32)Math.Ceiling(Info.TileInfo.Row * GridCount * 1.0 / MaxRowsInGridBlock);
TorBlocks = new List <TcTorBlock32>();
Int32 rowsProcessed = 0;
for (int gc = 0; gc < NumberOfGridBlocks; gc++)
{
Int32 rowsInGrid = Math.Min(MaxRowsInGridBlock, Info.TileInfo.Row * GridCount - rowsProcessed);
TcTorBlock32 block = new TcTorBlock32(gc, rowsInGrid, prmInfo.TileInfo.Col * GridCount);
for (int r = 0; r < rowsInGrid; r++)
{
for (int c = 0; c < prmInfo.TileInfo.Col * GridCount; c++)
{
block.Points[r, c] = TcConstants.TorNullValue32Bit;
}
}
TorBlocks.Add(block);
}
}
//------------------------------------------------------------------
private List <TcTorBlock32> GetTorBlocks(TcTolObject prmTol)
{
Int32 pointSize = sizeof(Single);
Int32 rowsInBlock = (Int32)Math.Floor(TcConstants.MaxBytesToLoadInTorBlock * 1.0 / (prmTol.Columns * pointSize));
Int64 noOfPointsAvailable = (Int64)((m_Reader.BaseStream.Length - m_Reader.BaseStream.Position) / pointSize);
// Create a las point array of required size.
List <TcTorBlock32> returnBlocks = new List <TcTorBlock32>();
// Memory stream.
Byte[] readBuffer;
Int32 index = 0;
Int32 rowsProcessed = 0;
while (rowsProcessed < prmTol.Rows)
{
Int32 rowsToProcess = Math.Min(rowsInBlock, prmTol.Rows - rowsProcessed);
Int32 bytesToRead = pointSize * rowsToProcess * prmTol.Columns;
// Reads the points in a byte array.
readBuffer = m_Reader.ReadBytes(bytesToRead);
TcTorBlock32 block = new TcTorBlock32(index++, rowsToProcess, prmTol.Columns)
{
Points = new Single[rowsToProcess, prmTol.Columns]
};
// Set a handle to the las point array.
GCHandle pinnedHandle = GCHandle.Alloc(block.Points, GCHandleType.Pinned);
// Copy the stream to the structures.
Marshal.Copy(readBuffer, 0, pinnedHandle.AddrOfPinnedObject(), bytesToRead);
returnBlocks.Add(block);
rowsProcessed += rowsToProcess;
}
return(returnBlocks);
}
//------------------------------------------------------------------
protected void Write(BinaryWriter prmWriter, TcTorBlock32 prmBlock)
{
Write(prmWriter, prmBlock.Points);
}
