From 74fe56ad152588eb280ddf3a373ec3348584dc2a Mon Sep 17 00:00:00 2001
From: Don Pellegrino <don@coffee.donpellegrino.com>
Date: Thu, 03 Sep 2009 01:40:57 +0000
Subject: Added comment on using glutPassiveMotionFunc

---
diff --git a/README b/README
index f3fe1b8..722286a 100644
--- a/README
+++ b/README
@@ -20,6 +20,13 @@ used to highlight the selection.
   Mouse-wheel: scroll to zoom in or out by 10% of the window size with
   the focus at the center of the window.
 
+An attempt was made to use the glutPassiveMotionFunc to show the
+information for the data under the mouse pointer.  This proved to be
+too slow so the use of this technique was discarded.  The basic
+selection mechanisms can be used to identify the points under the
+mouse.  Alternatively a keyboard command might be added to provide the
+information upon a keypress.
+
 ======
 COFFEE
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