Added new Node::getParentalNodePaths() method.

Added better handling in computeIntersections(..) of nodes that are internal
to the scene graph, correctly accounting for the accumulated transforms.

Changed the EventVisitor so that it only traveses active children rather than
all children.

Updated wrappers.

src/osg/Node.cpp

@@ -21,6 +21,36 @@
 
 using namespace osg;
 
+namespace osg
+{
+    /// Helper class for generating NodePathList.
+    class CollectParentPaths : public NodeVisitor
+    {
+    public:
+        CollectParentPaths(osg::Node* haltTraversalAtNode=0) : 
+            osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_PARENTS),
+            _haltTraversalAtNode(haltTraversalAtNode)
+        {
+        }
+
+        virtual void apply(osg::Node& node)
+        {
+            if (node.getNumParents()==0 || &node==_haltTraversalAtNode)
+            {
+                _nodePaths.push_back(getNodePath());
+            }
+            else
+            {
+                traverse(node);
+            }
+       }
+
+        Node*           _haltTraversalAtNode;
+        NodePath        _nodePath;
+        NodePathList    _nodePaths;
+    };
+}
+
 Node::Node()
 {
     _boundingSphereComputed = false;
@@ -133,6 +163,12 @@ osg::StateSet* Node::getOrCreateStateSet()
     return _stateset.get();
 }
 
+NodePathList Node::getParentalNodePaths(osg::Node* haltTraversalAtNode) const
+{
+    CollectParentPaths cpp(haltTraversalAtNode);
+    const_cast<Node*>(this)->accept(cpp);
+    return cpp._nodePaths;
+}
 
 void Node::setUpdateCallback(NodeCallback* nc)
 {