/// <summary>
/// Adds the router point as a vertex.
/// </summary>
public static uint AddAsVertex(this RouterDb routerDb, RouterPoint point)
{
if (routerDb.HasContracted)
{
throw new InvalidOperationException("Cannot add new vertices to a routerDb with contracted versions of the network.");
}
if (point.IsVertex())
{ // the router point is already a vertex.
return(point.VertexId(routerDb));
}
// add a new vertex at the router point location.
var location = point.LocationOnNetwork(routerDb);
var vertex = routerDb.Network.VertexCount;
routerDb.Network.AddVertex(vertex, location.Latitude, location.Longitude);
// add two new edges.
var edge = routerDb.Network.GetEdge(point.EdgeId);
var shapeFrom = point.ShapePointsTo(routerDb, edge.From);
shapeFrom.Reverse(); // we need this shape from edge.From -> vertex.
var shapeTo = point.ShapePointsTo(routerDb, edge.To);
var distanceFrom = point.DistanceTo(routerDb, edge.From);
var distanceTo = point.DistanceTo(routerDb, edge.To);
// remove edge id.
routerDb.Network.RemoveEdge(point.EdgeId);
// split in two.
routerDb.Network.AddEdge(edge.From, vertex, new Data.Network.Edges.EdgeData()
{
Distance = distanceFrom,
MetaId = edge.Data.MetaId,
Profile = edge.Data.Profile
}, shapeFrom);
routerDb.Network.AddEdge(vertex, edge.To, new Data.Network.Edges.EdgeData()
{
Distance = distanceTo,
MetaId = edge.Data.MetaId,
Profile = edge.Data.Profile
}, shapeTo);
// sort the vertices again.
routerDb.Network.Sort((v1, v2) =>
{
if (vertex == v1)
{
vertex = (uint)v2;
}
else if (vertex == v2)
{
vertex = (uint)v1;
}
});
return(vertex);
}
/// <summary>
/// Writes geojson describing the given routerpoint.
/// </summary>
internal static void WriteGeoJson(this RouterPoint routerPoint, TextWriter writer, RouterDb db)
{
if (db == null)
{
throw new ArgumentNullException("db");
}
if (writer == null)
{
throw new ArgumentNullException("writer");
}
var jsonWriter = new JsonWriter(writer);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "FeatureCollection", true, false);
jsonWriter.WritePropertyName("features", false);
jsonWriter.WriteArrayOpen();
var edgeEnumerator = db.Network.GetEdgeEnumerator();
edgeEnumerator.MoveToEdge(routerPoint.EdgeId);
db.WriteEdge(jsonWriter, edgeEnumerator);
db.WriteVertex(jsonWriter, edgeEnumerator.From);
db.WriteVertex(jsonWriter, edgeEnumerator.To);
// write location on network.
var coordinate = routerPoint.LocationOnNetwork(db);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "Feature", true, false);
jsonWriter.WritePropertyName("geometry", false);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "Point", true, false);
jsonWriter.WritePropertyName("coordinates", false);
jsonWriter.WriteArrayOpen();
jsonWriter.WriteArrayValue(coordinate.Longitude.ToInvariantString());
jsonWriter.WriteArrayValue(coordinate.Latitude.ToInvariantString());
jsonWriter.WriteArrayClose();
jsonWriter.WriteClose();
jsonWriter.WritePropertyName("properties");
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "location_on_network", true);
jsonWriter.WriteProperty("offset", routerPoint.Offset.ToInvariantString());
jsonWriter.WriteClose();
jsonWriter.WriteClose();
// write original location.
coordinate = routerPoint.Location();
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "Feature", true, false);
jsonWriter.WritePropertyName("geometry", false);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "Point", true, false);
jsonWriter.WritePropertyName("coordinates", false);
jsonWriter.WriteArrayOpen();
jsonWriter.WriteArrayValue(coordinate.Longitude.ToInvariantString());
jsonWriter.WriteArrayValue(coordinate.Latitude.ToInvariantString());
jsonWriter.WriteArrayClose();
jsonWriter.WriteClose();
jsonWriter.WritePropertyName("properties");
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "original_location", true);
jsonWriter.WriteClose();
jsonWriter.WriteClose();
jsonWriter.WriteArrayClose();
jsonWriter.WriteClose();
}
