1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package public_transport;
|
---|
3 |
|
---|
4 | import java.util.Iterator;
|
---|
5 | import java.util.Objects;
|
---|
6 | import java.util.TreeMap;
|
---|
7 | import java.util.TreeSet;
|
---|
8 | import java.util.Vector;
|
---|
9 |
|
---|
10 | import org.openstreetmap.josm.Main;
|
---|
11 | import org.openstreetmap.josm.data.osm.Node;
|
---|
12 | import org.openstreetmap.josm.data.osm.Way;
|
---|
13 |
|
---|
14 | public class PublicTransportAStar extends AStarAlgorithm {
|
---|
15 | public PublicTransportAStar(Node start, Node end) {
|
---|
16 | super(new NodeVertex(start), new NodeVertex(end));
|
---|
17 | }
|
---|
18 |
|
---|
19 | public static class NodeVertex extends AStarAlgorithm.Vertex {
|
---|
20 | public NodeVertex(Node node) {
|
---|
21 | this.node = node;
|
---|
22 | }
|
---|
23 |
|
---|
24 | @Override
|
---|
25 | public int compareTo(AStarAlgorithm.Vertex v) {
|
---|
26 | return this.node.compareTo(((NodeVertex) v).node);
|
---|
27 | }
|
---|
28 |
|
---|
29 | @Override
|
---|
30 | public boolean equals(Object o) {
|
---|
31 | if ((NodeVertex) o == null)
|
---|
32 | return false;
|
---|
33 | return node.equals(((NodeVertex) o).node);
|
---|
34 | }
|
---|
35 |
|
---|
36 | @Override
|
---|
37 | public int hashCode() {
|
---|
38 | return Objects.hashCode(node);
|
---|
39 | }
|
---|
40 |
|
---|
41 | public Node node;
|
---|
42 | }
|
---|
43 |
|
---|
44 | public static class PartialWayEdge extends AStarAlgorithm.Edge {
|
---|
45 | public PartialWayEdge(Way way, int beginIndex, int endIndex) {
|
---|
46 | this.way = way;
|
---|
47 | this.beginIndex = beginIndex;
|
---|
48 | this.endIndex = endIndex;
|
---|
49 | }
|
---|
50 |
|
---|
51 | @Override
|
---|
52 | public AStarAlgorithm.Vertex getBegin() {
|
---|
53 | return new NodeVertex(way.getNode(beginIndex));
|
---|
54 | }
|
---|
55 |
|
---|
56 | @Override
|
---|
57 | public AStarAlgorithm.Vertex getEnd() {
|
---|
58 | return new NodeVertex(way.getNode(endIndex));
|
---|
59 | }
|
---|
60 |
|
---|
61 | @Override
|
---|
62 | public double getLength() {
|
---|
63 | int min = beginIndex;
|
---|
64 | int max = endIndex;
|
---|
65 | if (endIndex < beginIndex) {
|
---|
66 | min = endIndex;
|
---|
67 | max = beginIndex;
|
---|
68 | }
|
---|
69 |
|
---|
70 | double totalDistance = 0;
|
---|
71 | for (int i = min; i < max; ++i) {
|
---|
72 | totalDistance += way.getNode(i).getCoor().greatCircleDistance(way.getNode(i + 1).getCoor());
|
---|
73 | }
|
---|
74 | return totalDistance;
|
---|
75 | }
|
---|
76 |
|
---|
77 | public Way way;
|
---|
78 |
|
---|
79 | public int beginIndex;
|
---|
80 |
|
---|
81 | public int endIndex;
|
---|
82 | }
|
---|
83 |
|
---|
84 | @Override
|
---|
85 | public Vector<AStarAlgorithm.Edge> getNeighbors(AStarAlgorithm.Vertex vertex) {
|
---|
86 | if (waysPerNode == null) {
|
---|
87 | waysPerNode = new TreeMap<>();
|
---|
88 |
|
---|
89 | Iterator<Way> iter = Main.getLayerManager().getEditDataSet().getWays().iterator();
|
---|
90 | while (iter.hasNext()) {
|
---|
91 | Way way = iter.next();
|
---|
92 |
|
---|
93 | // Only consider ways that are usable
|
---|
94 | if (!way.isUsable())
|
---|
95 | continue;
|
---|
96 |
|
---|
97 | // Further tests whether the way is eligible.
|
---|
98 |
|
---|
99 | for (int i = 0; i < way.getNodesCount(); ++i) {
|
---|
100 | if (waysPerNode.get(way.getNode(i)) == null)
|
---|
101 | waysPerNode.put(way.getNode(i), new TreeSet<Way>());
|
---|
102 | waysPerNode.get(way.getNode(i)).add(way);
|
---|
103 | }
|
---|
104 | }
|
---|
105 | }
|
---|
106 |
|
---|
107 | NodeVertex nodeVertex = (NodeVertex) vertex;
|
---|
108 | System.out.println(nodeVertex.node.getUniqueId());
|
---|
109 |
|
---|
110 | Vector<AStarAlgorithm.Edge> result = new Vector<>();
|
---|
111 | // Determine all ways in which nodeVertex.node is contained.
|
---|
112 | Iterator<Way> iter = waysPerNode.get(nodeVertex.node).iterator();
|
---|
113 | while (iter.hasNext()) {
|
---|
114 | Way way = iter.next();
|
---|
115 |
|
---|
116 | // Only consider ways that are usable
|
---|
117 | if (!way.isUsable())
|
---|
118 | continue;
|
---|
119 |
|
---|
120 | // Further tests whether the way is eligible.
|
---|
121 |
|
---|
122 | for (int i = 0; i < way.getNodesCount(); ++i) {
|
---|
123 | if (way.getNode(i).equals(nodeVertex.node)) {
|
---|
124 | if (i > 0)
|
---|
125 | result.add(new PartialWayEdge(way, i, i - 1));
|
---|
126 | if (i < way.getNodesCount() - 1)
|
---|
127 | result.add(new PartialWayEdge(way, i, i + 1));
|
---|
128 | }
|
---|
129 | }
|
---|
130 | }
|
---|
131 |
|
---|
132 | return result;
|
---|
133 | }
|
---|
134 |
|
---|
135 | TreeMap<Node, TreeSet<Way>> waysPerNode = null;
|
---|
136 |
|
---|
137 | @Override
|
---|
138 | public double estimateDistance(AStarAlgorithm.Vertex vertex) {
|
---|
139 | NodeVertex nodeVertex = (NodeVertex) vertex;
|
---|
140 | return ((NodeVertex) super.end).node.getCoor()
|
---|
141 | .greatCircleDistance(nodeVertex.node.getCoor());
|
---|
142 | }
|
---|
143 | }
|
---|