private void GetAttrs(IHdfOperator oper)
{
_dsNames = oper.GetDatasetNames;
_dsAttributes.Clear();
_fileAttributes.Clear();
foreach (string dsName in _dsNames)
{
Dictionary <string, string> dsAttrs = oper.GetAttributes(dsName);
_dsAttributes.Add(dsName, dsAttrs);
}
_fileAttributes = oper.GetAttributes();
}
private void SetInputFileDataSet(string filename)
{
using (IHdfOperator oper = HdfOperatorFactory(filename))
{
if (oper == null)
{
return;
}
GetAttrs(oper);
}
FillTreeView(filename);
TrySetGeoInfo();
}
private CoordEnvelope GetCoordEnvelope(GeoAtrributes geoAtrrs)
{
double lulat = 0.0, lulon = 0.0, rdlat = 0.0, rdlon = 0.0;
string lulatstr = geoAtrrs.LeftTopLatAtrrName;
string lulonstr = geoAtrrs.LeftTopLonAtrrName;
string rdlatstr = geoAtrrs.RightBottomLatAtrrName;
string rdlonstr = geoAtrrs.RightBottomLonAtrrName;
string unitstr = geoAtrrs.Unit;
using (IHdfOperator oper = HdfOperatorFactory(_fileName))
{
if (geoAtrrs.Location == enumGeoAttType.File)
{
_fileAttributes = oper.GetAttributes();
if (_fileAttributes == null)
{
return(null);
}
if (!GetExtentPoints(lulatstr, lulonstr, rdlatstr, rdlonstr, out lulat, out lulon, out rdlat, out rdlon))
{
return(null);
}
if (!string.IsNullOrEmpty(unitstr) && _fileAttributes.ContainsKey(unitstr))
{
string unit = _fileAttributes[unitstr];
if (!string.IsNullOrEmpty(unit))
{
UpdateRDLonLat(unit, ref lulat, ref lulon, ref rdlat, ref rdlon);
}
}
}
else
{
string geoDataset = geoAtrrs.GeoDataset;
lulat = GetDoubleAtrr(oper, geoDataset, lulatstr);
lulon = GetDoubleAtrr(oper, geoDataset, lulonstr);
rdlat = GetDoubleAtrr(oper, geoDataset, rdlatstr);
rdlon = GetDoubleAtrr(oper, geoDataset, rdlonstr);
if (Math.Abs(lulat - double.MinValue) < double.Epsilon ||
Math.Abs(lulon - double.MinValue) < double.Epsilon ||
Math.Abs(rdlat - double.MinValue) < double.Epsilon ||
Math.Abs(rdlon - double.MinValue) < double.Epsilon)
{
return(null);
}
}
return(new CoordEnvelope(lulon, rdlon, rdlat, lulat));
}
}
private double GetDoubleAtrr(IHdfOperator oper, string dataSet, string atrribute)
{
double result = double.MinValue;
string attrTemp = oper.GetAttributeValue(dataSet, atrribute);
if (!string.IsNullOrEmpty(attrTemp))
{
if (double.TryParse(attrTemp, out result))
{
return(result);
}
}
return(double.MinValue);
}
protected void Init(Dataset ds)
{
this.ds = ds;
var subDsDic = ds.GetSubDatasets();
if (Path.GetExtension(fileName).ToLower() != ".l1b" && subDsDic.Count > 0)
{
isMultiDs = true;
//初始化IHdfOperator
{
int _h5FileId = H5F.open(fileName, H5F.ACC_RDONLY);
if (_h5FileId >= 0)
{
hdfOperator = new Hdf5Operator(fileName);
//HDF5
H5F.close(_h5FileId);
}
else if (HDF4Helper.IsHdf4(fileName))
{
//HDF4
hdfOperator = new Hdf4Operator(fileName);
}
}
_fileAttrs = hdfOperator?.GetAttributes();
GetAllSubDatasetFullpaths(ds);
TryGetSizeOfMultiDs();
}
else if (ds.RasterCount > 0)
{
double[] geoTrans = new double[6];
ds.GetGeoTransform(geoTrans);
Width = ds.RasterXSize;
Height = ds.RasterYSize;
ResolutionX = Convert.ToSingle(geoTrans[1]);
ResolutionY = Math.Abs(Convert.ToSingle(geoTrans[5]));
BandCount = ds.RasterCount;
DataType = ds.GetRasterBand(1).DataType;
DriverName = ds.GetDriver().ShortName;
string wkt = ds.GetProjection();
if (!string.IsNullOrEmpty(wkt))
{
SpatialRef = new SpatialReference(wkt);
}
}
}
