Added mechanism for displaying nodemap centered on a particular node.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@835 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/nodemap/NodeMap.java

@@ -1,5 +1,5 @@
 //
-// $Id: NodeMap.java,v 1.5 2001/10/11 00:41:27 shaper Exp $
+// $Id: NodeMap.java,v 1.6 2001/12/18 12:43:12 mdb Exp $
 
 package com.threerings.nodemap;
 
@@ -30,6 +30,14 @@ public class NodeMap
 	_dirty = false;
     }
 
+    /**
+     * Returns an iterator over the nodes in this node map.
+     */
+    public Iterator nodes ()
+    {
+        return _nodes.iterator();
+    }
+
     /**
      * Force the nodes in the map to be re-laid out.
      */
@@ -55,6 +63,15 @@ public class NodeMap
 	_dirty = false;
     }
 
+    /**
+     * Returns the coordinates of the supplied node, adjusted into
+     * absolute coordinates (where 0,0 is the upper left of the node map).
+     */
+    public Point getNodeCoords (Node node)
+    {
+        return new Point(node.getX()-_minx, node.getY()-_miny);
+    }
+
     /**
      * Calculate the bounding rectangle that wholly contains the node
      * map.