From 8d8e3f410b899037ce776a3946c234d0feb01fe9 Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Sun, 24 Jul 2022 09:02:37 +0200
Subject: [PATCH] fix releaseMem ...

this time without flashing icons
---
 html/planeObject.js | 6 +++++-
 html/script.js      | 7 +++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/html/planeObject.js b/html/planeObject.js
index 7848fd6..3cb1ffe 100644
--- a/html/planeObject.js
+++ b/html/planeObject.js
@@ -967,7 +967,7 @@ PlaneObject.prototype.updateIcon = function() {
 
     let styleKey = (webgl ? '' : svgKey) + '!' + labelText + '!' + this.scale;
 
-    if (this.styleKey != styleKey) {
+    if (this.styleKey != styleKey || !this.marker.getStyle()) {
         this.styleKey = styleKey;
         let style;
         if (labelText) {
@@ -1667,10 +1667,14 @@ PlaneObject.prototype.clearMarker = function() {
         PlaneIconFeatures.removeFeature(this.marker);
         this.marker.visible = false;
     }
+    delete this.marker;
     if (this.glMarker && this.glMarker.visible) {
         webglFeatures.removeFeature(this.glMarker);
         this.glMarker.visible = false;
     }
+    delete this.glMarker;
+    delete this.styleKey;
+    delete this.olPoint;
 };
 
 // Update our marker on the map
diff --git a/html/script.js b/html/script.js
index 948b2ce..6d1ee82 100644
--- a/html/script.js
+++ b/html/script.js
@@ -3395,14 +3395,15 @@ function removeHighlight() {
 // OpenLayers might have some slight memory retention issues
 // recreating all OpenLayers Features for the planes every now and then releases that retained memory
 function releaseMem() {
+    //console.log('releaseMem()');
     for (let i in PlanesOrdered) {
         PlanesOrdered[i].clearMarker();
         PlanesOrdered[i].destroyTrace();
         PlanesOrdered[i].destroyTR();
     }
     refreshFeatures();
-    mapRefresh(true);
     TAR.planeMan.redraw();
+    //mapRefresh(true);
 }
 
 function refreshFeatures() {
@@ -7473,7 +7474,9 @@ function showReplayBar(){
 function timeoutFetch() {
     fetchData();
     timers.checkMove = setTimeout(timeoutFetch, Math.max(RefreshInterval, 10000));
-    reaper();
+    if (now - lastReap > 120) {
+        reaper();
+    }
 }
 
 function handleVisibilityChange() {