Ticket #22504: 0003-Add-circularize-selected-ways-code.patch

src/org/openstreetmap/josm/actions/AlignInCircleAction.java

@@ -149 +149 @@
      * <p>
      * Case 3: Only nodes are selected
      * --&gt; Align these nodes, all are fix
+     * <p>
+     * Case 4: Circularize selected ways
+     * --&gt; Circularize each way of the selection.
      * @param ds data set in which the command operates
      * @return the resulting command to execute to perform action, or null if nothing was changed
      * @throws InvalidSelection if selection cannot be used
@@ -226 +229 @@
             }
             fixNodes.addAll(onWay);
             nodes = collectNodesAnticlockwise(ways);
+        } else if (!ways.isEmpty() && selectedNodes.isEmpty()) {
+            center = null;
+            radius = 0;
+            List<Command> rcmds = new LinkedList<>();
+            for (Way w : ways) {
+                if (!w.isDeleted() && w.isArea()) {
+                    List<Node> wnodes = w.getNodes();
+                    wnodes.remove(wnodes.size() - 1);
+                    if (validateGeometry(wnodes)) {
+                        center = Geometry.getCenter(wnodes);
+                    }
+                    if (center == null) {
+                        continue;
+                    }
+                    boolean skipThisWay = false;
+                    radius = 0;
+                    for (Node n : wnodes) {
+                        if (!n.isLatLonKnown()) {
+                            skipThisWay = true;
+                            break;
+                        } else {
+                            radius += center.distance(n.getEastNorth());
+                        }
+                    }
+                    if (skipThisWay) {
+                        continue;
+                    } else {
+                        radius /= wnodes.size();
+                    }
+                    Command c = moveNodesCommand(
+                            wnodes, new HashSet<Node>(), center, radius);
+                    if (c != null) {
+                        rcmds.add(c);
+                    }
+                }
+            }
+            if (rcmds.isEmpty()) {
+                throw new InvalidSelection();
+            }
+            return new SequenceCommand(tr("Align each Way in Circle"), rcmds);
         } else {
             throw new InvalidSelection();
         }