Changeset 4671 in josm for trunk/src/org/openstreetmap/josm/data/osm/Way.java

Timestamp:

2011-12-20T22:28:46+01:00 (12 years ago)

Author:

stoecker

Message:

fix #7164 - patch by ij - bugs fixes and improvements for FollowLine function

File:

• trunk/src/org/openstreetmap/josm/data/osm/Way.java (modified) (2 diffs)

trunk/src/org/openstreetmap/josm/data/osm/Way.java

@@ -8 +8 @@
 import java.util.List;
 import java.util.Set;
+import java.util.HashSet;
 
 import org.openstreetmap.josm.Main;
@@ -139 +140 @@
     }
 
+    /**
+     * Return nodes adjacent to <code>node</code>
+     *
+     * @param node the node. May be null.
+     * @return Set of nodes adjacent to <code>node</code>
+     * @since 4666
+     */
+    public Set<Node> getNeighbours(Node node) {
+        HashSet<Node> neigh = new HashSet<Node>();
+
+        if (node == null) return neigh;
+
+        Node[] nodes = this.nodes;
+        for (int i=0; i<nodes.length; i++) {
+            if (nodes[i].equals(node)) {
+                if (i > 0)
+                    neigh.add(nodes[i-1]);
+                if (i < nodes.length-1)
+                    neigh.add(nodes[i+1]);
+            }
+        }
+        return neigh;
+    }
+
     public List<Pair<Node,Node>> getNodePairs(boolean sort) {
         List<Pair<Node,Node>> chunkSet = new ArrayList<Pair<Node,Node>>();