org.opentripplanner.street.model.vertex.BarrierVertex Maven / Gradle / Ivy
package org.opentripplanner.street.model.vertex;
import org.opentripplanner.street.model.StreetTraversalPermission;
import org.opentripplanner.street.model.edge.StreetEdge;
/**
* This vertex is created from all barrier tags.
*
* Currently only barrier=bollard is supported. Node barrier=bollard implies access=no, foot=yes,
* bicycle=yes
*
* On this vertex geometry is split and two new edges are created.
*
* If start/end vertex of {@link StreetEdge} is BarrierVertex
* edge isn't traversable with CAR.
*/
public class BarrierVertex extends OsmVertex {
public static final StreetTraversalPermission defaultBarrierPermissions =
StreetTraversalPermission.ALL;
private StreetTraversalPermission barrierPermissions;
public BarrierVertex(double x, double y, long nodeId) {
super(x, y, nodeId);
barrierPermissions = defaultBarrierPermissions;
}
public StreetTraversalPermission getBarrierPermissions() {
return barrierPermissions;
}
public void setBarrierPermissions(StreetTraversalPermission barrierPermissions) {
this.barrierPermissions = barrierPermissions;
}
/*
* Barrier vertex at the end of a way does not make sense, because
* it creates discontinuity of routing in a single point.
* This method examines if traversal limitations can be removed.
* The logic examines edges referring to the vertex, so it should be
* applied only after the vertex has been linked to the graph.
*/
public void makeBarrierAtEndReachable() {
var edgeCount = this.getDegreeOut() + this.getDegreeIn();
var needsFix = false;
if (edgeCount == 1) {
// only one edge connects the vertex, must be end point
needsFix = true;
} else if (edgeCount == 2) {
var out = this.getOutgoing();
var in = this.getIncoming();
if (
// if only outgoing edges or incoming edges -> vertex does not act as a pass-through point and barrier makes no sense
out.isEmpty() ||
in.isEmpty() ||
// in+out edge pair connects the vertex to a single adjacent vertex -> must be street end point
out.iterator().next().getToVertex() ==
in.iterator().next().getFromVertex()
) {
needsFix = true;
}
}
if (needsFix) {
this.barrierPermissions = StreetTraversalPermission.ALL;
}
}
}