/// <summary>
/// Gets a feature representing the edge with the given id.
/// </summary>
public static Feature GetFeatureForEdge(this RouterDb routerDb, uint edgeId)
{
var edge = routerDb.Network.GetEdge(edgeId);
var edgeAttributes = new Itinero.Attributes.AttributeCollection(routerDb.EdgeMeta.Get(edge.Data.MetaId));
edgeAttributes.AddOrReplace(routerDb.EdgeProfiles.Get(edge.Data.Profile));
var geometry = new LineString(routerDb.Network.GetShape(edge).ToCoordinatesArray());
var attributes = edgeAttributes.ToAttributesTable();
attributes.AddAttribute("id", edge.Id.ToInvariantString());
attributes.AddAttribute("distance", edge.Data.Distance.ToInvariantString());
return(new Feature(geometry, attributes));
}
/// <summary>
/// Gets all features inside the given bounding box.
/// </summary>
public static FeatureCollection GetFeaturesIn(this RouterDb db, float minLatitude, float minLongitude,
float maxLatitude, float maxLongitude, bool includeEdges = true, bool includeVertices = true)
{
var features = new FeatureCollection();
var vertices = Itinero.Algorithms.Search.Hilbert.HilbertExtensions.Search(db.Network.GeometricGraph, minLatitude, minLongitude,
maxLatitude, maxLongitude);
var edges = new HashSet <long>();
var edgeEnumerator = db.Network.GetEdgeEnumerator();
foreach (var vertex in vertices)
{
if (includeVertices)
{
features.Add(db.GetFeatureForVertex(vertex));
}
if (includeEdges)
{
edgeEnumerator.MoveTo(vertex);
edgeEnumerator.Reset();
while (edgeEnumerator.MoveNext())
{
if (edges.Contains(edgeEnumerator.Id))
{
continue;
}
edges.Add(edgeEnumerator.Id);
var edgeAttributes = new Itinero.Attributes.AttributeCollection(db.EdgeMeta.Get(edgeEnumerator.Data.MetaId));
edgeAttributes.AddOrReplace(db.EdgeProfiles.Get(edgeEnumerator.Data.Profile));
var geometry = new LineString(db.Network.GetShape(edgeEnumerator.Current).ToCoordinatesArray());
var attributes = edgeAttributes.ToAttributesTable();
attributes.AddAttribute("id", edgeEnumerator.Id.ToInvariantString());
attributes.AddAttribute("distance", edgeEnumerator.Data.Distance.ToInvariantString());
features.Add(new Feature(geometry,
attributes));
}
}
}
return(features);
}
/// <summary>
/// Writes a linestring-geometry for the edge currently in the enumerator.
/// </summary>
private static void WriteEdge(this RouterDb db, JsonWriter jsonWriter, RoutingNetwork.EdgeEnumerator edgeEnumerator)
{
var edgeAttributes = new Itinero.Attributes.AttributeCollection(db.EdgeMeta.Get(edgeEnumerator.Data.MetaId));
edgeAttributes.AddOrReplace(db.EdgeProfiles.Get(edgeEnumerator.Data.Profile));
var shape = db.Network.GetShape(edgeEnumerator.Current);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "Feature", true, false);
jsonWriter.WritePropertyName("geometry", false);
jsonWriter.WriteOpen();
jsonWriter.WriteProperty("type", "LineString", true, false);
jsonWriter.WritePropertyName("coordinates", false);
jsonWriter.WriteArrayOpen();
foreach (var coordinate in shape)
{
jsonWriter.WriteArrayOpen();
jsonWriter.WriteArrayValue(coordinate.Longitude.ToInvariantString());
jsonWriter.WriteArrayValue(coordinate.Latitude.ToInvariantString());
jsonWriter.WriteArrayClose();
}
jsonWriter.WriteArrayClose();
jsonWriter.WriteClose();
jsonWriter.WritePropertyName("properties");
jsonWriter.WriteOpen();
if (edgeAttributes != null)
{
foreach (var attribute in edgeAttributes)
{
jsonWriter.WriteProperty(attribute.Key, attribute.Value, true, true);
}
}
jsonWriter.WriteProperty("edgeid", edgeEnumerator.Id.ToInvariantString());
jsonWriter.WriteProperty("vertex1", edgeEnumerator.From.ToInvariantString());
jsonWriter.WriteProperty("vertex2", edgeEnumerator.To.ToInvariantString());
jsonWriter.WriteClose();
jsonWriter.WriteClose();
}
/// <summary>
/// Deserializes the attribute collection.
/// </summary>
public static IAttributeCollection DeserializeWithSize(Stream stream)
{
var position = stream.Position;
var compressed = stream.ReadByte();
var sizeBytes = new byte[4];
stream.Read(sizeBytes, 0, 4);
var size = BitConverter.ToInt32(sizeBytes, 0);
var attributes = new AttributeCollection();
while (stream.Position - position < size + 5)
{
var key = stream.ReadWithSizeString();
var value = stream.ReadWithSizeString();
attributes.AddOrReplace(key, value);
}
return(attributes);
}
/// <summary>
/// Gets all features.
/// </summary>
public static FeatureCollection GetFeatures(this RouterDb db)
{
var network = db.Network;
var features = new FeatureCollection();
var edges = new HashSet <long>();
var edgeEnumerator = network.GetEdgeEnumerator();
for (uint vertex = 0; vertex < network.VertexCount; vertex++)
{
var vertexLocation = network.GeometricGraph.GetVertex(vertex);
var attributes = new AttributesTable();
attributes.AddAttribute("id", vertex.ToInvariantString());
features.Add(new Feature(new Point(vertexLocation.ToCoordinate()),
attributes));
edgeEnumerator.MoveTo(vertex);
edgeEnumerator.Reset();
while (edgeEnumerator.MoveNext())
{
if (edges.Contains(edgeEnumerator.Id))
{
continue;
}
edges.Add(edgeEnumerator.Id);
var edgeAttributes = new Itinero.Attributes.AttributeCollection(db.EdgeMeta.Get(edgeEnumerator.Data.MetaId));
edgeAttributes.AddOrReplace(db.EdgeProfiles.Get(edgeEnumerator.Data.Profile));
var geometry = new LineString(network.GetShape(edgeEnumerator.Current).ToCoordinatesArray());
attributes = edgeAttributes.ToAttributesTable();
attributes.AddAttribute("id", edgeEnumerator.Id.ToInvariantString());
attributes.AddAttribute("distance", edgeEnumerator.Data.Distance.ToInvariantString());
var tags = db.GetProfileAndMeta(edgeEnumerator.Data.Profile, edgeEnumerator.Data.MetaId);
features.Add(new Feature(geometry,
attributes));
}
}
return(features);
}
/// <summary>
/// Loads a test network from geojson.
/// </summary>
public static void LoadTestNetwork(this RouterDb db, string geoJson, float tolerance = 20)
{
var nodeIds = db.VertexData.AddInt64("node_ids");
var geoJsonReader = new NetTopologySuite.IO.GeoJsonReader();
var features = geoJsonReader.Read <FeatureCollection>(geoJson);
foreach (var feature in features.Features)
{
if (feature.Geometry is Point)
{
var point = feature.Geometry as Point;
uint id;
if (feature.Attributes.Exists("id") &&
uint.TryParse(feature.Attributes["id"].ToInvariantString(), out id))
{ // has an id, add as vertex.
db.Network.AddVertex(id,
(float)point.Coordinate.Y,
(float)point.Coordinate.X);
nodeIds[id] = id;
var vertexMeta = new AttributeCollection();
foreach (var name in feature.Attributes.GetNames())
{
if (name == "id" ||
name.StartsWith("marker"))
{
continue;
}
var value = feature.Attributes[name];
if (value == null)
{
vertexMeta.AddOrReplace(name, string.Empty);
}
else
{
vertexMeta.AddOrReplace(name, value.ToInvariantString());
}
}
if (vertexMeta.Count > 0)
{
db.VertexMeta[id] = vertexMeta;
}
}
}
}
foreach (var feature in features.Features)
{
if (feature.Geometry is LineString)
{
if (feature.Attributes.Contains("restriction", "yes"))
{
continue;
}
var line = feature.Geometry as LineString;
var profile = new Itinero.Attributes.AttributeCollection();
var names = feature.Attributes.GetNames();
foreach (var name in names)
{
if (!name.StartsWith("meta:") &&
!name.StartsWith("stroke"))
{
profile.AddOrReplace(name, feature.Attributes[name].ToInvariantString());
}
}
var meta = new Itinero.Attributes.AttributeCollection();
foreach (var name in names)
{
if (name.StartsWith("meta:"))
{
meta.AddOrReplace(name.Remove(0, "meta:".Length),
feature.Attributes[name].ToInvariantString());
}
}
var profileId = db.EdgeProfiles.Add(profile);
var metaId = db.EdgeMeta.Add(meta);
var vertex1 = db.SearchVertexFor(
(float)line.Coordinates[0].Y,
(float)line.Coordinates[0].X, tolerance);
var distance = 0.0;
var shape = new List <Coordinate>();
for (var i = 1; i < line.Coordinates.Length; i++)
{
var vertex2 = db.SearchVertexFor(
(float)line.Coordinates[i].Y,
(float)line.Coordinates[i].X, tolerance);
distance += Coordinate.DistanceEstimateInMeter(
(float)line.Coordinates[i - 1].Y, (float)line.Coordinates[i - 1].X,
(float)line.Coordinates[i].Y, (float)line.Coordinates[i].X);
if (vertex2 == Itinero.Constants.NO_VERTEX)
{ // add this point as shapepoint.
shape.Add(line.Coordinates[i].FromCoordinate());
continue;
}
db.Network.AddEdge(vertex1, vertex2, new Itinero.Data.Network.Edges.EdgeData()
{
Distance = (float)distance,
MetaId = metaId,
Profile = (ushort)profileId
}, shape);
shape.Clear();
vertex1 = vertex2;
distance = 0;
}
}
}
foreach (var feature in features.Features)
{
if (feature.Geometry is LineString &&
feature.Attributes.Contains("restriction", "yes"))
{
var line = feature.Geometry as LineString;
var sequence = new List <uint>();
sequence.Add(db.SearchVertexFor(
(float)line.Coordinates[0].Y,
(float)line.Coordinates[0].X, tolerance));
for (var i = 1; i < line.Coordinates.Length; i++)
{
sequence.Add(db.SearchVertexFor(
(float)line.Coordinates[i].Y,
(float)line.Coordinates[i].X, tolerance));
}
var vehicleType = string.Empty;
if (!feature.Attributes.TryGetValueAsString("vehicle_type", out vehicleType))
{
vehicleType = string.Empty;
}
RestrictionsDb restrictions;
if (!db.TryGetRestrictions(vehicleType, out restrictions))
{
restrictions = new RestrictionsDb();
db.AddRestrictions(vehicleType, restrictions);
}
restrictions.Add(sequence.ToArray());
}
if (feature.Geometry is Point &&
feature.Attributes.Contains("restriction", "yes"))
{
var point = feature.Geometry as Point;
var sequence = new List <uint>();
sequence.Add(db.SearchVertexFor(
(float)point.Coordinate.Y,
(float)point.Coordinate.X, tolerance));
var vehicleType = string.Empty;
if (!feature.Attributes.TryGetValueAsString("vehicle_type", out vehicleType))
{
vehicleType = string.Empty;
}
RestrictionsDb restrictions;
if (!db.TryGetRestrictions(vehicleType, out restrictions))
{
restrictions = new RestrictionsDb();
db.AddRestrictions(vehicleType, restrictions);
}
restrictions.Add(sequence.ToArray());
}
}
}
