public TNeighbors GetNeighbors(
[NotNull] TBorderConnection borderConnection)
{
Dictionary <FeatureKey, TNeighbors> neighborsByFeature;
var geometryFeatureKey = new FeatureKey(borderConnection.Feature.OID,
borderConnection.ClassIndex);
if (!_borderConnections.TryGetValue(geometryFeatureKey, out neighborsByFeature))
{
neighborsByFeature =
new Dictionary <FeatureKey, TNeighbors>(new FeatureKeyComparer());
_borderConnections.Add(geometryFeatureKey, neighborsByFeature);
}
TNeighbors neighbors;
var borderFeatureKey = new FeatureKey(
borderConnection.BorderFeature.OID, borderConnection.BorderClassIndex);
if (!neighborsByFeature.TryGetValue(borderFeatureKey, out neighbors))
{
neighbors = CreateNeighbors(borderConnection);
neighborsByFeature.Add(borderFeatureKey, neighbors);
}
return(neighbors);
}
public IEnumerable <T> GetBorderConnections <TG>(
[NotNull] TG geometry,
[NotNull] IFeature geometryFeature,
int geometryClassIndex,
int borderClassIndex,
ITable borderClass,
ISpatialFilter spatialFilter,
QueryFilterHelper filterHelper,
Func <ITable, IQueryFilter, QueryFilterHelper, IEnumerable <IRow> > search,
RowPairCondition borderMatchCondition)
where TG : IGeometry
{
var geometryKey = new FeatureKey(geometryFeature.OID, geometryClassIndex);
Dictionary <FeatureKey, T> borderConnections;
if (!_cache.TryGetValue(geometryKey, out borderConnections))
{
borderConnections = new Dictionary <FeatureKey, T>(new FeatureKeyComparer());
_cache.Add(geometryKey, borderConnections);
}
IPolyline geometryLine = geometry is IPolyline
? (IPolyline)geometry
: (IPolyline)((ITopologicalOperator)geometry).Boundary;
IEnumerable <IFeature> borderFeatures =
GetConnectedBorderFeatures(geometry, geometryFeature, geometryClassIndex,
borderClassIndex, search, borderClass, spatialFilter,
filterHelper, borderMatchCondition);
foreach (IFeature borderFeature in borderFeatures)
{
var borderKey = new FeatureKey(borderFeature.OID, borderClassIndex);
T borderConnection;
if (!borderConnections.TryGetValue(borderKey, out borderConnection))
{
IPolyline geometryAlongBorder = GetGeometryAlongBorder(borderFeature,
geometryLine);
borderConnection = CreateBorderConnection(geometryFeature, geometryClassIndex,
borderFeature,
borderClassIndex,
geometryAlongBorder,
geometryAlongBorder);
borderConnections.Add(borderKey, borderConnection);
}
}
return(new List <T>(borderConnections.Values));
}
