From ade97cffc3cd4c0f5cce7285e0ca7dc059b3d68f Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Fri, 23 Oct 2020 11:01:20 +0200
Subject: [PATCH] avoid some icon rotation changes

---
 html/planeObject.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/html/planeObject.js b/html/planeObject.js
index 3a872b3..9225aff 100644
--- a/html/planeObject.js
+++ b/html/planeObject.js
@@ -821,9 +821,10 @@ PlaneObject.prototype.updateIcon = function() {
     }
     */
 
-    if (this.rotationCache == null || Math.abs(this.rotationCache - this.rotation) > 0.15) {
-        this.rotationCache = this.rotation;
-        this.markerIcon.setRotation(this.baseMarker.noRotate ? 0 : this.rotation * Math.PI / 180.0);
+    const iconRotation = this.baseMarker.noRotate ? 0 : this.rotation;
+    if (this.rotationCache != iconRotation && Math.abs(this.rotationCache - iconRotation) > 0.35) {
+        this.rotationCache = iconRotation;
+        this.markerIcon.setRotation(iconRotation * Math.PI / 180.0);
     }
 
     if (this.scaleCache != this.scale) {