From a5b750b1cd59c1c4aec853875151de4e821e2ba2 Mon Sep 17 00:00:00 2001
From: William Joye <wjoye@cfa.harvard.edu>
Date: Thu, 9 Mar 2017 13:24:11 -0500
Subject: limit how small panner highlite box is displayed in cases where
 zoomed in

---
 tksao/panner/panner.C | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tksao/panner/panner.C b/tksao/panner/panner.C
index 4e0251b..f009990 100644
--- a/tksao/panner/panner.C
+++ b/tksao/panner/panner.C
@@ -230,6 +230,10 @@ void Panner::updateCmd(void* p)
 void Panner::updateBBoxCmd(const Vector& ll, const Vector& lr, 
 			   const Vector& ur, const Vector& ul)
 {
+  Vector ss = ur - ll;
+  if (ss[0] < 3 || ss[1] < 3)
+    return;
+
   bbox[0] = ll;
   bbox[1] = lr;
   bbox[2] = ur;
-- 
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