private IEnumerable <INetworkEdge> EnumerateAdjacentTurnEdges(OSMTurnInfo osmTurn, bool useToJunction)
{
INetworkQuery query = (INetworkQuery)_networkDataset;
// get turn FROM-edge
INetworkSource source = _networkDataset.get_SourceByName(((IDataset)osmTurn.FromFeature.Class).Name);
IEnumNetworkElement enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.FromFeature.OID, 0.0, false);
INetworkEdge edgeFrom = enumNetElements.Next() as INetworkEdge;
// get the FROM-edge Junctions
INetworkJunction fromJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
INetworkJunction toJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
edgeFrom.QueryJunctions(fromJunction, toJunction);
// Get adjacent edges from the turn center junction
INetworkJunction junction = ((useToJunction) ? toJunction : fromJunction);
for (int n = 0; n < junction.EdgeCount; ++n)
{
INetworkEdge edge = query.CreateNetworkElement(esriNetworkElementType.esriNETEdge) as INetworkEdge;
junction.QueryEdge(n, true, edge);
if ((edge.OID == osmTurn.FromFeature.OID) || (edge.OID == osmTurn.ToFeature.OID))
{
continue;
}
yield return(edge);
}
}
private IEnumerable <INetworkEdge> EnumerateAdjacentTurnEdges(OSMTurnInfo osmTurn, bool useToJunction)
{
INetworkQuery query = (INetworkQuery)_networkDataset;
// get turn FROM-edge
INetworkSource source = _networkDataset.get_SourceByName(((IDataset)osmTurn.FromFeature.Class).Name);
IEnumNetworkElement enumNetElements = null;
IRelationalOperator relationalOperator = ((IPolyline)osmTurn.ToFeature.Shape).FromPoint as IRelationalOperator;
bool useFromPointOfToFeature = relationalOperator.Contains(osmTurn.ViaFeature.Shape);
if (useFromPointOfToFeature)
{
enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.ToFeature.OID, 0, false);
}
else
{
enumNetElements = query.get_EdgesByPosition(source.ID, osmTurn.ToFeature.OID, 1, false);
}
INetworkEdge edgeFrom = enumNetElements.Next() as INetworkEdge;
// get the FROM-edge Junctions
INetworkJunction fromJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
INetworkJunction toJunction = query.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
edgeFrom.QueryJunctions(fromJunction, toJunction);
// Get adjacent edges from the turn center junction
INetworkJunction junction = ((useFromPointOfToFeature) ? fromJunction : toJunction);
for (int n = 0; n < junction.EdgeCount; ++n)
{
INetworkEdge edge = query.CreateNetworkElement(esriNetworkElementType.esriNETEdge) as INetworkEdge;
if (useFromPointOfToFeature)
{
junction.QueryEdge(n, true, edge);
}
else
{
junction.QueryEdge(n, false, edge);
}
//if ((edge.SourceID == osmTurn.FromFeature.OID) || (edge.SourceID == osmTurn.ToFeature.OID))
if ((edge.OID == osmTurn.ToFeature.OID))
{
continue;
}
yield return(edge);
}
}
private byte[] QueryByExtentHandler(NameValueCollection boundVariables,
JsonObject operationInput,
string outputFormat,
string requestProperties,
out string responseProperties)
{
responseProperties = null;
if (networkDataset == null)
{
throw new NullReferenceException("Could not access the network dataset.");
}
if (!operationInput.TryGetString("Extent", out var envelopeString))
{
throw new ArgumentNullException("Extent is invalid.");
}
var coords = envelopeString.Split(';');
var minCoords = coords[0].Split(',');
var maxCoords = coords[1].Split(',');
double.TryParse(minCoords[0].Trim(), out var minX);
double.TryParse(minCoords[1].Trim(), out var minY);
double.TryParse(maxCoords[0].Trim(), out var maxX);
double.TryParse(maxCoords[0].Trim(), out var maxY);
// Find features in envelope
IEnvelope env = new EnvelopeClass();
env.PutCoords(minX, minY, maxX, maxY);
ISpatialFilter spatialFilter = new SpatialFilter();
spatialFilter.Geometry = env;
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
// Add selected features OID into LongArray
ILongArray oIDs = new LongArray();
IFeatureCursor fCursor = streetFC.Search(spatialFilter, true);
IFeature feature = fCursor.NextFeature();
while (feature != null)
{
oIDs.Add(feature.OID);
feature = fCursor.NextFeature();
}
// Get the network edges corresponding to the streets and write out information about them
INetworkQuery networkQuery = networkDataset as INetworkQuery;
INetworkJunction fromJunction =
networkQuery.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
INetworkJunction toJunction =
networkQuery.CreateNetworkElement(esriNetworkElementType.esriNETJunction) as INetworkJunction;
IEnumNetworkElement networkElements = networkQuery.ElementsByOIDs[streetsSourceID, oIDs];
INetworkElement networkElement = networkElements.Next();
JSONObject result = new JSONObject();
JSONArray elementArray = new JSONArray();
INetworkEdge networkEdge;
while (networkElement != null)
{
JSONObject jo = new JSONObject();
networkEdge = networkElement as INetworkEdge;
networkEdge.QueryJunctions(fromJunction, toJunction);
double travelTime = (double)networkEdge.AttributeValue[travelTimeAttributeID];
jo.AddLong("EdgeID", networkEdge.EID);
jo.AddLong("FromJunctionID", fromJunction.EID);
jo.AddLong("ToJunctionID", toJunction.EID);
jo.AddDoubleEx(costAttributeName, travelTime, 4);
elementArray.AddJSONObject(jo);
networkElement = networkElements.Next();
}
result.AddJSONArray("NetworkElements", elementArray);
return(Encoding.UTF8.GetBytes(result.ToJSONString(null)));
}
static void Main(string[] args)
{
try
{
// Initialize ArcObjects
ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.Desktop);
LicenseInitializer aoLicenseInitializer = new LicenseInitializer();
if (!aoLicenseInitializer.InitializeApplication(new esriLicenseProductCode[] { esriLicenseProductCode.esriLicenseProductCodeBasic, esriLicenseProductCode.esriLicenseProductCodeStandard, esriLicenseProductCode.esriLicenseProductCodeAdvanced },
new esriLicenseExtensionCode[] { esriLicenseExtensionCode.esriLicenseExtensionCodeNetwork }))
{
System.Windows.Forms.MessageBox.Show("This application could not initialize with the correct ArcGIS license and will shutdown. LicenseMessage: " + aoLicenseInitializer.LicenseMessage());
aoLicenseInitializer.ShutdownApplication();
return;
}
// Get the network dataset
string networkDatasetPath = args[0];
INetworkDataset nd = GetNetworkDatasetFromPath(networkDatasetPath);
var networkQuery = nd as INetworkQuery3;
// Name of source containing transit lines. Probably hard-wired to "TransitLines"
string sourceName = args[1];
// Get the source object from the network
INetworkSource networkSource = nd.get_SourceByName(sourceName);
int networkSourceID = networkSource.ID;
// The SQLDbase containing the transit schedules
string SQLDbase_path = args[2];
// Connect to the SQL database, loop through the network's features, and add EID values to the table for each SourceOID.
string workspaceConnectionString = @"Data Source=" + SQLDbase_path + "; Version=3;";
using (SQLiteConnection conn = new SQLiteConnection(workspaceConnectionString))
{
conn.Open();
using (SQLiteCommand cmd = new SQLiteCommand(conn))
{
using (var transaction = conn.BeginTransaction())
{
List <int> BadSourceOIDs = new List <int>();
// Get all the transit lines from the network
IEnumNetworkElement transit_lines = networkQuery.get_ElementsForSource(networkSourceID);
// Loop through all the transit lines and add their EIDs to the SQL table
INetworkElement transit_line = transit_lines.Next();
while (transit_line != null)
{
// Note: We are assuming that there is a one-to-one mapping between SourceOID and EID. This should always be
// the case for transit lines feature classes correctly created using the Add GTFS to a Network Dataset toolbox.
int EID = transit_line.EID;
int SourceOID = transit_line.OID;
try
{
string updateStmt = string.Format("UPDATE linefeatures SET eid={0} WHERE SourceOID={1}", EID.ToString(), SourceOID.ToString());
cmd.CommandText = updateStmt;
cmd.ExecuteNonQuery();
}
catch
{
// For some reason, the item couldn't be inserted into the table, likely because SourceOID couldn't be found.
BadSourceOIDs.Add(SourceOID);
continue;
}
transit_line = transit_lines.Next();
}
// Add the eids to the table in batch.
transaction.Commit();
if (BadSourceOIDs.Count != 0)
{
// Write out an error if something went wrong while filling the table.
Console.Error.WriteLine("The network EID value could not be determined for the following transit line source OIDs:");
foreach (int BadSourceOID in BadSourceOIDs)
{
Console.Error.WriteLine(BadSourceOID);
}
Console.Error.WriteLine("You probably need to recreate your transit lines feature class.");
}
}
}
}
}
catch (Exception e)
{
Console.Error.WriteLine(e.Message);
}
}
