From 0c836ccfc22196585660a1b9f20bf1d84fb9720b Mon Sep 17 00:00:00 2001
From: Xelio <xelio.cheong@gmail.com>
Date: Sat, 18 May 2013 14:52:43 +0800
Subject: [PATCH] Bug fix: selected portal should not remove when
 zooming/panning out of range

---
 code/portal_render_limit.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/code/portal_render_limit.js b/code/portal_render_limit.js
index eeff4456..98a31095 100644
--- a/code/portal_render_limit.js
+++ b/code/portal_render_limit.js
@@ -79,7 +79,14 @@ window.portalRenderLimit.resetPortalsLowerThanPrevMinLv = function() {
 window.portalRenderLimit.cleanUpOverLimitPortalLevel = function() {
   var currentMinLevel = window.getMinPortalLevel();
   for(var i = 0; i < currentMinLevel; i++) {
-    portalsLayers[i].clearLayers();
+    portalsLayers[i].eachLayer(function(item) {
+      var itemGuid = item.options.guid;
+      // check if 'item' is a portal
+      if(getTypeByGuid(itemGuid) != TYPE_PORTAL) return true;
+      // Don’t remove if it is selected.
+      if(itemGuid == window.selectedPortal) return true;
+      portalsLayers[i].removeLayer(item);
+    });
   }
 }