From fd85ee4f4e166add0a04b945533e263da5bfcaee Mon Sep 17 00:00:00 2001
From: Jonathan Nielsen <jmnetus@familysearch.org>
Date: Fri, 4 Oct 2013 10:12:47 -0600
Subject: [PATCH] Check that zoom reference point is valid before using it
---
src/viewport.js | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/viewport.js b/src/viewport.js
index 691851c4..5c4c9f2d 100644
--- a/src/viewport.js
+++ b/src/viewport.js
@@ -551,7 +551,9 @@ $.Viewport.prototype = {
*/
zoomTo: function( zoom, refPoint, immediately ) {
- this.zoomPoint = refPoint instanceof $.Point ?
+ this.zoomPoint = refPoint instanceof $.Point &&
+ !isNaN(refPoint.x) &&
+ !isNaN(refPoint.y) ?
refPoint :
null;