/// <summary>
/// Adds a node that is at least part of one road.
/// </summary>
/// <param name="nodeId"></param>
/// <returns></returns>
private uint?AddRoadNode(long nodeId)
{
uint id;
// try and get existing node.
if (!_idTransformations.TryGetValue(nodeId, out id))
{
// get coordinates.
GeoCoordinateSimple coordinates;
if (_coordinates.TryGetValue(nodeId, out coordinates))
{ // the coordinate is present.
id = _dynamicGraph.AddVertex(
coordinates.Latitude, coordinates.Longitude);
_coordinates.Remove(nodeId); // free the memory again!
if (_usedTwiceOrMore.Contains(nodeId))
{
_idTransformations[nodeId] = id;
}
return(id);
}
return(null);
}
return(id);
}
/// <summary>
/// Adds the given node.
/// </summary>
/// <param name="node"></param>
public override void AddNode(Node node)
{
if (!_preIndexMode)
{
if (_nodesToCache != null &&
_nodesToCache.Contains(node.Id.Value))
{ // cache this node?
_dataCache.AddNode(node);
}
if (_preIndex != null && _preIndex.Contains(node.Id.Value))
{ // only save the coordinates for relevant nodes.
// save the node-coordinates.
// add the relevant nodes.
if (_box == null || _box.Contains(new GeoCoordinate((float)node.Latitude.Value, (float)node.Longitude.Value)))
{ // the coordinate is acceptable.
_coordinates[node.Id.Value] = new GeoCoordinateSimple()
{
Latitude = (float)node.Latitude.Value,
Longitude = (float)node.Longitude.Value
};
if (_coordinates.Count == _preIndex.Count)
{
_preIndex.Clear();
_preIndex = null;
}
if (_bounds == null)
{ // create bounds.
_bounds = new GeoCoordinateBox(
new GeoCoordinate(node.Latitude.Value, node.Longitude.Value),
new GeoCoordinate(node.Latitude.Value, node.Longitude.Value));
}
else
{ // expand bounds.
_bounds.ExpandWith(
new GeoCoordinate(node.Latitude.Value, node.Longitude.Value));
}
// add the node as a possible restriction.
if (_interpreter.IsRestriction(OsmGeoType.Node, node.Tags))
{ // tests quickly if a given node is possibly a restriction.
List <Vehicle> vehicles = _interpreter.CalculateRestrictions(node);
if (vehicles != null &&
vehicles.Count > 0)
{ // add all the restrictions.
uint vertexId = this.AddRoadNode(node.Id.Value).Value; // will always exists, has just been added to coordinates.
uint[] restriction = new uint[] { vertexId };
if (vehicles.Contains(null))
{ // restriction is valid for all vehicles.
_dynamicGraph.AddRestriction(restriction);
}
else
{ // restriction is restricted to some vehicles only.
foreach (Vehicle vehicle in vehicles)
{
_dynamicGraph.AddRestriction(vehicle, restriction);
}
}
}
}
}
}
}
}