--- a/Renderer/Engine/SceneGraphRoot.cc	Wed Dec 08 00:39:28 2010 +0900
+++ b/Renderer/Engine/SceneGraphRoot.cc	Wed Dec 08 02:41:36 2010 +0900
@@ -496,6 +496,37 @@
     return sg_exec_tree;
 }
 
+
+void
+printSceneGraph(SceneGraphPtr t)
+{
+    while (t) {
+	if (!t->isRemoved()) {
+	    if (t->name) printf("name: %s ",t->name);
+	    printf("x=%g y=%g z=%g\n",t->xyz[0],t->xyz[1],t->xyz[2]);
+	} 
+	if (t->children != NULL) {
+	    t = t->children;
+	} else if (t->brother != NULL) {
+	    t = t->brother;
+	} else {
+	    while (t) {
+		if (t->brother != NULL) {
+		    t = t->brother;
+		    break;
+		} else {
+		    if (t->parent == NULL) {
+			t = NULL;
+			break;
+		    } else {
+                        t = t->parent;
+		    }
+		}
+	    }	    
+	}
+    }
+}
+
 SceneGraphPtr
 SceneGraphRoot::getDrawSceneGraph()
 {