/// <summary>
/// Will take a given polygon and 'cookie cut' it into the chosen layer
/// </summary>
/// <param name="homesite_polygon"></param>
private void StampPolygonIntoHomesiteLayer(IPolygon homesite_polygon)
{
try
{
IFeatureLayer featureLayer = _utilitiesArcMap.FeatureLayer(cbo_featureclass.Text);
IFeatureClass featureClass = featureLayer.FeatureClass;
_editor.StartOperation();
ISpatialFilter spatialFilter = new SpatialFilter();
spatialFilter.GeometryField = featureClass.ShapeFieldName;
spatialFilter.Geometry = homesite_polygon;
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
IFeatureCursor featureCursor = featureClass.Search(spatialFilter, false);
IFeature feature = null;
while ((feature = featureCursor.NextFeature()) != null)
{
ITopologicalOperator topologicalOperator = feature.Shape as ITopologicalOperator;
IGeometry geometry = topologicalOperator.Difference(homesite_polygon);
IPolygon polygon = geometry as IPolygon;
IFeature newFeature = featureClass.CreateFeature();
newFeature.Shape = polygon as IPolygon;
// This caused a problem with memory allocation. It would not delete the orignal data.
ArrayList fields = _utilitiesArcMap.NumberFieldsWithDomain(featureLayer);
// Set the attribute back to the old ones.
foreach (string field in fields)
{
newFeature.set_Value(newFeature.Fields.FindField(field), feature.get_Value(feature.Fields.FindField(field)));
}
newFeature.Store();
feature.Delete();
}
IFeature homesite = featureClass.CreateFeature();
homesite.Shape = homesite_polygon;
homesite.Store();
_editor.StopOperation("Homesite");
} catch (Exception ex)
{
RS_Tools.Utilities.Utilities_MessageBox.ErrorBox(ex.Message, MB_TITLE);
}
}