Definitivamente, há algo suspeito acontecendo com o 10.0 sp2.
Posso converter um pacote de geometria para IRelationalOperator2, caso contrário, este teste diria "incapaz de converter", além de receber uma exceção de referência nula.
No entanto, na primeira chamada para IsNear, recebo a exceção.
System.InvalidCastException occurred
Message=Unable to cast COM object of type 'ESRI.ArcGIS.Geometry.GeometryBagClass' to interface type 'ESRI.ArcGIS.Geometry.IRelationalOperator2'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{839F5C7E-ED5F-4B3F-8F97-C0A9CC4817EE}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Source=ESRI.ArcGIS.Geometry
Aqui está o teste:
private void GBTest(IPoint pnt)
{
// this line does not fail
var relop = new GeometryBagClass() as IRelationalOperator2;
if (relop == null)
Debug.Print("unable to cast"); // this doesn't print out
var coll = relop as IGeometryCollection;
coll.AddGeometry(pnt);
//((ISpatialIndex)coll).AllowIndexing = true;
//((ISpatialIndex)coll).Invalidate();
var pnt2 = ((IClone)pnt).Clone() as IPoint;
((ITransform2D)pnt2).Move(100.0, 100.0);
if (relop.IsNear(pnt2, 1000.0)) // exception here
Debug.Print("test 1 fail");
if (!relop.IsNear(pnt2, 10.0))
Debug.Print("test 2 fail");
}
Aqui está outro teste. Observe como posso transmitir sem uma exceção, mas recebo uma exceção InvalidCast ao chamar IsNear.
private void GBTest(IPoint pnt)
{
var coll = new GeometryBagClass();
((IGeometry)coll).SpatialReference = pnt.SpatialReference;
coll.AddGeometry(pnt);
coll.GeometriesChanged();
var relop = (IRelationalOperator2)coll; // would expect the exception here
var pnt2 = ((IClone)pnt).Clone() as IPoint;
((ITransform2D)pnt2).Move(100.0, 100.0);
if (relop.IsNear(pnt2, 1000.0)) // exception here
Debug.Print("test 1 fail");
if (!relop.IsNear(pnt2, 10.0))
Debug.Print("test 2 fail");
}