/// <summary>
/// Opens an existing dfs-file
/// </summary>
/// <param name="DFSFileName"></param>
public DFSBase(string DFSFileName)
: this()
{
_filename = DFSFileName;
AbsoluteFileName = Path.GetFullPath(DFSFileName);
try
{
DfsDLLWrapper.dfsFileRead(AbsoluteFileName, out _headerPointer, out _filePointer);
}
catch (Exception e)
{
return; //Not a valid file.
}
NumberOfItems = DfsDLLWrapper.dfsGetNoOfItems(_headerPointer);
string eum_unit = "";
int unit = 0;
int data_type = 0;
int item_type = 0;
float x = 0;
float y = 0;
float z = 0;
float dx = 0;
float dy = 0;
float dz = 0;
IntPtr name = new IntPtr();
//Reads the projection
LastStatus = dfsGetGeoInfoUTMProj(_headerPointer, ref name, ref _xOrigin, ref _yOrigin, ref _orientation);
//Reads the space axis
_spaceAxis = (SpaceAxisType)DfsDLLWrapper.dfsGetItemAxisType(FirstItem.ItemPointer);
//Now read axes info dependent on the type of axis
switch (_spaceAxis)
{
case SpaceAxisType.CurveLinearD2:
break;
case SpaceAxisType.CurveLinearD3:
break;
case SpaceAxisType.EqD0:
break;
case SpaceAxisType.EqD1:
break;
case SpaceAxisType.EqD2: //DFS2 from MikeShe
DfsDLLWrapper.dfsGetItemAxisEqD2(FirstItem.ItemPointer, out item_type, out eum_unit, out _numberOfColumns, out _numberOfRows, out x, out y, out dx, out dy);
break;
case SpaceAxisType.EqD3: //DFS3 from MikeShe
DfsDLLWrapper.dfsGetItemAxisEqD3(FirstItem.ItemPointer, out item_type, out eum_unit, out _numberOfColumns, out _numberOfRows, out _numberOfLayers, out x, out y, out z, out dx, out dy, out dz);
break;
case SpaceAxisType.NeqD1:
var coords = new Coords[1];
DfsDLLWrapper.dfsGetItemAxisNeqD1(FirstItem.ItemPointer, out unit, out eum_unit, out data_type, out coords);
break;
case SpaceAxisType.NeqD2:
break;
case SpaceAxisType.NeqD3:
break;
case SpaceAxisType.Undefined:
break;
default:
break;
}
_gridSize = dx;
//Prepares an array of floats to recieve the data
dfsdata = new float[_numberOfColumns * _numberOfRows * _numberOfLayers];
//Now look at time axis
_timeAxis = (TimeAxisType)DfsDLLWrapper.dfsGetTimeAxisType(_headerPointer);
string startdate = "";
string starttime = "";
double tstart = 0;
double tstep = 0;
int nt = 0;
int tindex = 0;
switch (_timeAxis)
{
case TimeAxisType.TimeEquidistant: //Some DFS2 here
DfsDLLWrapper.dfsGetEqTimeAxis(_headerPointer, out unit, out eum_unit, out tstart, out tstep, out nt, out tindex);
break;
case TimeAxisType.CalendarEquidistant: //Dfs2 and dfs3 here
DfsDLLWrapper.dfsGetEqCalendarAxis(_headerPointer, out startdate, out starttime, out unit, out eum_unit, out tstart, out tstep, out nt, out tindex);
if (unit == 1400)
{
_timeStep = TimeSpan.FromSeconds(tstep);
}
else if (unit == 1401) //This is a guess
{
_timeStep = TimeSpan.FromMinutes(tstep);
}
else if (unit == 1402)
{
_timeStep = TimeSpan.FromHours(tstep);
}
break;
case TimeAxisType.TimeNonEquidistant: //This has not been tested
DfsDLLWrapper.dfsGetNeqTimeAxis(_headerPointer, out unit, out eum_unit, out tstart, out tstep, out nt, out tindex);
break;
case TimeAxisType.CalendarNonEquidistant://Only dfs0 can have varying time steps
DfsDLLWrapper.dfsGetNeqCalendarAxis(_headerPointer, out startdate, out starttime, out unit, out eum_unit, out tstart, out tstep, out nt, out tindex);
break;
case TimeAxisType.Undefined:
break;
default:
break;
}
NumberOfTimeStepsWritten = nt;
timeStepUnit = (TimeInterval)unit;
if (_timeAxis == TimeAxisType.CalendarNonEquidistant | _timeAxis == TimeAxisType.TimeEquidistant)
{
_times = new double[nt];
}
if (startdate != "" & starttime != "")
{
_timesteps.Add(DateTime.Parse(startdate).Add(TimeSpan.Parse(starttime)));
}
else //Time equidistant files enter here.
{
_timesteps.Add(new DateTime(2002, 1, 1));
}
//Now build the list of timesteps
for (int i = 1; i < nt; i++)
{
if (_timeAxis == TimeAxisType.CalendarNonEquidistant) //dfs0 with time varying.
{
_timesteps.Add(_timesteps[0].Add(GetTimeSpan(i)));
}
else
{
_timesteps.Add(_timesteps[i - 1].Add(_timeStep));
}
}
}
public int ReadDfsFile(string dfsFileName)
{
int rc;
DfsDLLWrapper.dfsFileRead(dfsFileName, out pHeader, out pFile);
m_fileName = dfsFileName;
compressed = (DfsDLLWrapper.dfsIsFileCompressed(pHeader));
if (compressed)
{
encodeKeySize = DfsDLLWrapper.dfsGetEncodeKeySize(pHeader);
if (encodeKeySize > 0)
{
compress_XKey = new int[encodeKeySize];
compress_YKey = new int[encodeKeySize];
compress_ZKey = new int[encodeKeySize];
DfsDLLWrapper.dfsGetEncodeKey(pHeader, compress_XKey, compress_YKey, compress_ZKey);
}
else
{
compressed = false;
}
}
// general info about file
dfsFileType = (FileType)DfsDLLWrapper.dfsGetFileType(pHeader);
DataType = DfsDLLWrapper.dfsGetDataType(pHeader);
//delete value
delVal = DfsDLLWrapper.dfsGetDeleteValFloat(pHeader);
//statisics type
statType = DfsDLLWrapper.dfsGetItemStatsType(pHeader);
//Custom blocks
DfsSimpleType iDataType = DfsSimpleType.Float;
int iMiscVarNos = 0;
IntPtr pData = pHeader;
IntPtr pNextBlock = pHeader;
IntPtr pBlock = pHeader;
pBlock = DfsDLLWrapper.dfsGetCustomBlockRef(pHeader);
if (pBlock.ToInt32() != 0)
{
DfsDLLWrapper.dfsGetCustomBlock(pBlock, out iDataType, out CustomBlockName, out iMiscVarNos, ref pData, out pNextBlock);
switch ((DfsSimpleType)iDataType)
{
case DfsSimpleType.Float:
custBlockDataFloat = new float[iMiscVarNos];
Marshal.Copy(pData, custBlockDataFloat, 0, custBlockDataFloat.Length); // copy data from pointer to array
break;
case DfsSimpleType.Int:
custBlockDataInt = new int[iMiscVarNos];
Marshal.Copy(pData, custBlockDataInt, 0, custBlockDataInt.Length); // copy data from pointer to array
break;
default:
throw new Exception("Unsupported CustomBlock data tyoe encountered (" + iDataType + ".");
}
if (CustomBlockName == "MIKE_FM")
{
//dfsu
if (custBlockDataInt.Length > 0)
{
dfsuCustBlock.NoNodesTot = custBlockDataInt[0];
}
if (custBlockDataInt.Length > 1)
{
dfsuCustBlock.NoElemTot = custBlockDataInt[1];
}
if (custBlockDataInt.Length > 2)
{
dfsuCustBlock.Dim = custBlockDataInt[2];
}
if (custBlockDataInt.Length > 3)
{
dfsuCustBlock.NoLayers = custBlockDataInt[3];
}
}
else if (CustomBlockName == "M21_Misc")
{
if (custBlockDataFloat.Length > 0)
{
m21CustBlock.ori = custBlockDataFloat[0]; //m_LITOrientation
}
if (custBlockDataFloat.Length > 1)
{
m21CustBlock.f1 = custBlockDataFloat[1];
}
if (custBlockDataFloat.Length > 2)
{
m21CustBlock.f2 = custBlockDataFloat[2];
}
if (custBlockDataFloat.Length > 3)
{
m21CustBlock.f3 = custBlockDataFloat[3]; //m_LandValue
}
if (custBlockDataFloat.Length > 4)
{
m21CustBlock.f4 = custBlockDataFloat[4];
}
if (custBlockDataFloat.Length > 5)
{
m21CustBlock.f5 = custBlockDataFloat[5];
}
if (custBlockDataFloat.Length > 6)
{
m21CustBlock.f6 = custBlockDataFloat[6]; //m_GISLITOrientation
}
}
}
//time axis
tAxisType = (TimeAxisType)DfsDLLWrapper.dfsGetTimeAxisType(pHeader);
switch (tAxisType)
{
case TimeAxisType.CalendarEquidistant:
DfsDLLWrapper.dfsGetEqCalendarAxis(pHeader, out tAxis_StartDateStr, out tAxis_StartTimeStr, out tAxis_EUMUnit, out tAxis_EUMUnitStr, out tAxis_dTStart, out tAxis_dTStep, out tAxis_nTSteps, out tAxis_indexTStart);
break;
case TimeAxisType.Undefined:
DfsDLLWrapper.dfsGetEqCalendarAxis(pHeader, out tAxis_StartDateStr, out tAxis_StartTimeStr, out tAxis_EUMUnit, out tAxis_EUMUnitStr, out tAxis_dTStart, out tAxis_dTStep, out tAxis_nTSteps, out tAxis_indexTStart);
break;
case TimeAxisType.CalendarNonEquidistant:
DfsDLLWrapper.dfsGetNeqCalendarAxis(pHeader, out tAxis_StartDateStr, out tAxis_StartTimeStr, out tAxis_EUMUnit, out tAxis_EUMUnitStr, out tAxis_dTStart, out tAxis_dTStep, out tAxis_nTSteps, out tAxis_indexTStart);
break;
case TimeAxisType.TimeEquidistant:
DfsDLLWrapper.dfsGetEqTimeAxis(pHeader, out tAxis_EUMUnit, out tAxis_EUMUnitStr, out tAxis_dTStart, out tAxis_dTStep, out tAxis_nTSteps, out tAxis_indexTStart);
break;
case TimeAxisType.TimeNonEquidistant:
DfsDLLWrapper.dfsGetNeqTimeAxis(pHeader, out tAxis_EUMUnit, out tAxis_EUMUnitStr, out tAxis_dTStart, out tAxis_dTStep, out tAxis_nTSteps, out tAxis_indexTStart);
break;
default:
return(_err(tAxisType.ToString() + " not supported"));
}
//Projection
Projection_type = (ProjectionType)DfsDLLWrapper.dfsGetGeoInfoType(pHeader);
if (Projection_type == ProjectionType.Projection)
{
DfsDLLWrapper.dfsGetGeoInfoUTMProj(pHeader, out Projection, out Longitude, out Latitude, out Orientation);
}
//Dynamic Items
int ItemCount = DfsDLLWrapper.dfsGetNoOfItems(pHeader);
Items = new DfsItemInfo[ItemCount];
for (int i = 1; i < Items.Length + 1; i++)
{
Items[i - 1] = new DfsItemInfo();
Items[i - 1].fileInfoRef = this;
Items[i - 1].Read(i); // reads header
}
//Static Items
rc = 0;
int sItemNo = 0;
while (true)
{
sItemNo++;
try
{ DfsDLLWrapper.dfsFindItemStatic(pHeader, pFile, sItemNo); }
catch
{ break; }// no more static items
}
if (sItemNo > 0)
{
staticItems = new DfsItemInfo[sItemNo - 2];
for (int i = 0; i < staticItems.Length; i++)
{
staticItems[i] = new DfsItemInfo();
staticItems[i].fileInfoRef = this;
rc = staticItems[i].ReadStatic(i + 1); // read header
}
if (readStaticDataOnRead)
{
rc = ReadStaticData();
}
}
return(rc);
}
