From 4eb8e3d96a214678e40b70206b3c159bf5a31ff6 Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver@mutability.co.uk>
Date: Fri, 16 Sep 2016 11:04:33 +0100
Subject: [PATCH] Set visible=false if we don't display a marker due to stale
 position; this avoids markers briefly blinking back in on zoom.

---
 public_html/planeObject.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/public_html/planeObject.js b/public_html/planeObject.js
index 99af19f..ee76dd2 100644
--- a/public_html/planeObject.js
+++ b/public_html/planeObject.js
@@ -445,8 +445,8 @@ PlaneObject.prototype.updateTick = function(receiver_timestamp, last_timestamp)
                                 selectPlaneByHex(null,false);
                 }
 	} else {
-                this.visible = true;
                 if (this.position !== null && (this.selected || this.seen_pos < 60)) {
+			this.visible = true;
 			if (this.updateTrack(receiver_timestamp - last_timestamp + (this.position_from_mlat ? 30 : 5))) {
                                 this.updateLines();
                                 this.updateMarker(true);
@@ -455,6 +455,7 @@ PlaneObject.prototype.updateTick = function(receiver_timestamp, last_timestamp)
                         }
                 } else {
 			this.clearMarker();
+			this.visible = false;
 		}
 	}
 };