public static IEnumerable <IFeature> QueryFeatures(this ILayer layer, SpatialQueryOperation operation, object param, double tol)
{
if (operation == SpatialQueryOperation.Point)
{
var pos = (Vector)param;
return(PointQuery(layer, pos, tol));
}
else if (operation == SpatialQueryOperation.Window)
{
var extents = (Extents)param;
return(WindowQuery(layer, extents));
}
else if (operation == SpatialQueryOperation.Cross)
{
var extents = (Extents)param;
return(CrossQuery(layer, extents));
}
return(null);
}
public static IEnumerable <IFeature> QueryFeatures(this Map map, SpatialQueryOperation operation, object param, double tol)
{
return(map.Layers.SelectMany(layer => MapQueryServices.QueryFeatures(layer, operation, param, tol)));
}
public static ILookup <ILayer, IFeature> QueryFeaturesGroupedByLayer(this Map map, SpatialQueryOperation operation, object param, double tol)
{
return(map.Layers.ToLookup(
keySelector: layer => layer,
valuesSelector: layer => layer.QueryFeatures(operation, param, tol)));
}
