public void QueryShape(IGeometry pGeometry)
{
if (pGeometry == null)
{
return;
}
try
{
OSGeo.OGR.Geometry ogrGeometry = m_currentOGRFeature.GetGeometryRef();
//export geometry from OGR to WKB
int wkbSize = ogrGeometry.WkbSize();
byte[] wkbBuffer = new byte[wkbSize];
ogrGeometry.ExportToWkb(wkbBuffer);
//import geometry from WKB to ESRI Shape
IWkb pWKB = pGeometry as IWkb;
pWKB.ImportFromWkb(wkbSize, ref wkbBuffer[0]);
pGeometry.SpatialReference = m_pDataset.SpatialReference;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(" Error: " + ex.Message);
pGeometry.SetEmpty();
}
}
/// <summary>
/// Converts the geometry to WKB.
/// </summary>
/// <param name="geometry">The geometry</param>
/// <returns>WKB byte array</returns>
private static byte[] ConvertGeometryToWKB(IGeometry geometry)
{
IWkb wkb = geometry as IWkb;
ITopologicalOperator oper = geometry as ITopologicalOperator;
oper.Simplify();
IGeometryFactory3 factory = new GeometryEnvironment() as IGeometryFactory3;
byte[] b = factory.CreateWkbVariantFromGeometry(geometry) as byte[];
return(b);
}
/// <summary>
/// IFeature转换为DbGeometry
/// </summary>
/// <param name="feature"></param>
/// <returns></returns>
public static DbGeometry featureToDbGeometry(IFeature feature)
{
IWkb wkb = (IWkb)feature.Shape;
byte[] wkb_bytes = new byte[wkb.WkbSize];
int byte_count = wkb.WkbSize;
wkb.ExportToWkb(ref byte_count, out wkb_bytes[0]);
DbGeometry result = DbGeometry.FromBinary(wkb_bytes, SRID);
return(result);
}
private static string GetHexWkb(IGeometry geom)
{
string retval = "";
try
{
IWkb wkb = geom as IWkb;
int byteCount = wkb.WkbSize;
byte[] wkbBytes = new byte[byteCount];
wkb.ExportToWkb(ref byteCount, out wkbBytes[0]);
retval = ByteArrayToString(wkbBytes, byteCount);
}
catch { }
return(retval);
}
public void QueryShape(IGeometry pGeometry)
{
if (pGeometry == null)
{
return;
}
try
{
OSGeo.OGR.Geometry ogrGeometry = m_currentOGRFeature.GetGeometryRef();
// Flatten the geometry and ommit Z value until we add manual
// Z-value zupport
// See:
// https://github.com/RBURHUM/arcgis-ogr/issues/11
//
//
ogrGeometry.FlattenTo2D();
//export geometry from OGR to WKB
int wkbSize = ogrGeometry.WkbSize();
byte[] wkbBuffer = new byte[wkbSize];
ogrGeometry.ExportToWkb(wkbBuffer);
//import geometry from WKB to ESRI Shape
IWkb pWKB = pGeometry as IWkb;
pWKB.ImportFromWkb(wkbSize, ref wkbBuffer[0]);
pGeometry.SpatialReference = m_pDataset.SpatialReference;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(" Error: " + ex.Message);
pGeometry.SetEmpty();
}
}
