private static void GetGeoAtrrs(GeoInfos geoInfo, XElement geoInfoElement)
{
XElement geoAtrrs = geoInfoElement.Element("GeoAtrrs");
if (geoAtrrs != null)
{
GeoAtrributes geoAtrr = null;
if (!string.IsNullOrEmpty(geoAtrrs.Attribute("location").Value))
{
geoAtrr = new GeoAtrributes();
geoAtrr.Location = (enumGeoAttType)Enum.Parse(typeof(enumGeoAttType), geoAtrrs.Attribute("location").Value);
geoAtrr.GeoDataset = geoAtrrs.Attribute("datasetname").Value;
geoAtrr.LeftTopLonAtrrName = geoAtrrs.Attribute("lefttoplon").Value;
geoAtrr.LeftTopLatAtrrName = geoAtrrs.Attribute("lefttoplat").Value;
geoAtrr.RightBottomLonAtrrName = geoAtrrs.Attribute("rightbottomlon").Value;
geoAtrr.RightBottomLatAtrrName = geoAtrrs.Attribute("rightbottomlat").Value;
geoAtrr.Unit = geoAtrrs.Attribute("unit").Value;
}
if (geoAtrr == null || (string.IsNullOrEmpty(geoAtrr.GeoDataset) && geoAtrr.Location == enumGeoAttType.Dataset) || string.IsNullOrEmpty(geoAtrr.LeftTopLonAtrrName) ||
string.IsNullOrEmpty(geoAtrr.LeftTopLatAtrrName) || string.IsNullOrEmpty(geoAtrr.RightBottomLonAtrrName) ||
string.IsNullOrEmpty(geoAtrr.RightBottomLatAtrrName))
{
geoInfo.GeoAtrrs = null;
}
else
{
geoInfo.GeoAtrrs = geoAtrr;
}
}
}
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));
}
}
public GeoInfos(string proj4Str, GeoAtrributes geoAtrrs) :
this(proj4Str)
{
GeoAtrrs = geoAtrrs;
}
