Index: /applications/editors/josm/plugins/tracer/src/org/openstreetmap/josm/plugins/tracer/TracerAction.java
===================================================================
--- /applications/editors/josm/plugins/tracer/src/org/openstreetmap/josm/plugins/tracer/TracerAction.java	(revision 19891)
+++ /applications/editors/josm/plugins/tracer/src/org/openstreetmap/josm/plugins/tracer/TracerAction.java	(revision 19892)
@@ -24,4 +24,5 @@
 import org.openstreetmap.josm.command.Command;
 import org.openstreetmap.josm.command.DeleteCommand;
+import org.openstreetmap.josm.command.MoveCommand;
 import org.openstreetmap.josm.command.SequenceCommand;
 import org.openstreetmap.josm.data.coor.LatLon;
@@ -47,4 +48,9 @@
     protected TracerServer server = new TracerServer();
 
+    final double MIN_DISTANCE = 0.000015; //Minimal distance, when nodes are merged
+    final double MIN_DISTANCE_TW = 0.000015; //Minimal distance, when node is connected to other way
+    final double MIN_DISTANCE_SQ = 0.000015; //Minimal distance, when other node is connected this way
+    final double MAX_ANGLE = 30; //Minimal angle, when other node is connected this way
+
     public TracerAction(MapFrame mapFrame) {
         super(tr("Tracer"), "tracer-sml", tr("Tracer."), Shortcut.registerShortcut("tools:tracer", tr("Tool: {0}", tr("Tracer")), KeyEvent.VK_T, Shortcut.GROUP_EDIT), mapFrame, getCursor());
@@ -123,9 +129,11 @@
      */
     private Command connectObjects(Way way) {
-        final double MIN_DISTANCE = 0.000015;
 
         List<Command> cmds = new LinkedList<Command>();
         Way newWay = new Way(way);
-        for (Node n : way.getNodes()) {
+        for (int i = 0; i < way.getNodesCount() - 1; i++) { 
+            Node n = way.getNode(i); 
+            //System.out.println("-------");
+            //System.out.println("Node: " + n);
             LatLon ll = n.getCoor();
             BBox bbox = new BBox(
@@ -151,14 +159,12 @@
 
             //System.out.println("Nearest: " + nearestNode);
-            //System.out.println("-------");
             if (nearestNode == null) {
                 cmds.addAll(tryConnectNodeToAnyWay(n));
             } else {
-                cmds.add(mergeNodes(nearestNode, n, newWay));
-            }
-        }
-        newWay = trySplitWayByAnyNodes(way);
-
-        cmds.add(new ChangeCommand(way, newWay));
+                cmds.addAll(mergeNodes(n, nearestNode, newWay));
+            }
+        }
+
+        cmds.add(new ChangeCommand(way, trySplitWayByAnyNodes(newWay)));
 
         Command cmd = new SequenceCommand(tr("Merge objects nodes"), cmds);
@@ -171,8 +177,13 @@
      * @param n2 Second node
      * @param way Way containing first node
-     * @return Command
+     * @return List of Commands.
      */
-    private Command mergeNodes(Node n1, Node n2, Way way){
-        n2.setCoor(n1.getCoor().getCenter(n2.getCoor()));
+    private List<Command> mergeNodes(Node n1, Node n2, Way way){
+        List<Command> cmds = new LinkedList<Command>();
+        cmds.add(new MoveCommand(n2, 
+                 (n1.getEastNorth().getX() - n2.getEastNorth().getX())/2, 
+                 (n1.getEastNorth().getY() - n2.getEastNorth().getY())/2
+                 ));
+
         int j = way.getNodes().indexOf(n1);
         way.addNode(j, n2);
@@ -182,9 +193,11 @@
         }
         way.removeNode(n1);
-        return new DeleteCommand(n1);
+
+        cmds.add(new DeleteCommand(n1));
+        return cmds;
     }
 
     /**
-     * Try connect node "node" from way "way" to way of other building.
+     * Try connect node "node" to way of other building.
      *
      * Zkusi zjistit, zda node neni tak blizko nejake usecky existujici budovy,
@@ -199,13 +212,12 @@
             throws IllegalStateException, IndexOutOfBoundsException {
         
-        final double MIN_DISTANCE = 0.000015;
         List<Command> cmds = new LinkedList<Command>();
 
         LatLon ll = node.getCoor();
         BBox bbox = new BBox(
-                ll.getX() - MIN_DISTANCE,
-                ll.getY() - MIN_DISTANCE,
-                ll.getX() + MIN_DISTANCE,
-                ll.getY() + MIN_DISTANCE);
+                ll.getX() - MIN_DISTANCE_TW,
+                ll.getY() - MIN_DISTANCE_TW,
+                ll.getX() + MIN_DISTANCE_TW,
+                ll.getY() + MIN_DISTANCE_TW);
 
         // node nebyl slouceny s jinym
@@ -228,10 +240,12 @@
             }
         }
-        //System.out.println("Nearest way:" + nearestWay);
-        if (minDist < MIN_DISTANCE) {
+        //System.out.println("Nearest way: " + nearestWay + " distance: " + minDist);
+        if (minDist < MIN_DISTANCE_TW) {
             Way newNWay = new Way(nearestWay);
             newNWay.addNode(nearestNodeIndex + 1, node);
             //System.out.println("New way:" + newNWay);
-            cmds.add(new ChangeCommand(nearestWay, newNWay));
+            Command c = new ChangeCommand(nearestWay, newNWay);
+            c.executeCommand();
+            cmds.add(c);
         }
         return cmds;
@@ -260,6 +274,6 @@
             LatLon n2 = way.getNodes().get((i + 1) % way.getNodesCount()).getCoor();
             //System.out.println(way.getNodes().get(i) + "-----" + way.getNodes().get((i + 1) % way.getNodesCount()));
-            double minDistanceSq = 0.000015;
-            double maxAngle = 15;
+            double minDistanceSq = MIN_DISTANCE_SQ;
+            double maxAngle = MAX_ANGLE;
             List<Node> nodes = Main.main.getCurrentDataSet().searchNodes(new BBox(
                 Math.min(n1.getX(), n2.getX()) - minDistanceSq,
@@ -276,4 +290,5 @@
                 double dist = TracerGeometry.distanceFromSegment(nn, n1, n2);
                 double angle = TracerGeometry.angleOfLines(n1, nn, nn, n2);
+                //System.out.println("Angle: " + angle + " distance: " + dist + " Node: " + nod);
                 if (!n1.equalsEpsilon(nn) && !n2.equalsEpsilon(nn) && dist < minDistanceSq && Math.abs(angle) < maxAngle) {
                     maxAngle = angle;
@@ -297,5 +312,5 @@
 
     private void tagBuilding(Way way) {
-        if(alt) way.put("building", "yes");
+        if(!alt) way.put("building", "yes");
         way.put("source", "cuzk:km");
     }
@@ -388,2 +403,3 @@
     }
 }
+