Below is a piece of code used in my program to determine if a polygon feature is overlapped with another polygon feature by referring to A feature overlapped with another feature
public bool feature_Intersect_feature(ESRI.ArcGIS.Geodatabase.IFeature f1, ESRI.ArcGIS.Geodatabase.IFeature f2) {
// Create a geometrybag for f1
ESRI.ArcGIS.Geometry.IGeometry geometryBag = new ESRI.ArcGIS.Geometry.GeometryBagClass();
geometryBag = (ESRI.ArcGIS.Geometry.GeometryBag)f1.ShapeCopy;
// set the topology operator
ESRI.ArcGIS.Geometry.ITopologicalOperator pTopOp;
pTopOp = (ESRI.ArcGIS.Geometry.ITopologicalOperator)f1.Shape; // new ESRI.ArcGIS.Geometry.PolygonClass();
// set for f2
ESRI.ArcGIS.Geometry.IGeometry5 pInGeometry = (ESRI.ArcGIS.Geometry.IGeometry5)f2.ShapeCopy;
//ESRI.ArcGIS.Geometry.IGeometry pInGeometry = (ESRI.ArcGIS.Geometry.IGeometry)f2.ShapeCopy;
if (pInGeometry.Dimension == ESRI.ArcGIS.Geometry.esriGeometryDimension.esriGeometry2Dimension) {
if (f1.ShapeCopy.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon) {
ESRI.ArcGIS.Geometry.IGeometry pOverlapGeometry = pTopOp.Intersect(pInGeometry,
ESRI.ArcGIS.Geometry.esriGeometryDimension.esriGeometry2Dimension);
if (pOverlapGeometry != null)
return true;
}
}
return false;
}
However, when it is executed for 2 far-away and not interacted polygons, the returned result is true, which means they are interacted. What is wrong in my code? Thanks if you can point it out?
