From 4bfcdadb76ccf62ce8e1e8e02cdfefae58f23f28 Mon Sep 17 00:00:00 2001
From: Emux <devemux86@gmail.com>
Date: Mon, 4 Nov 2019 13:41:05 +0200
Subject: [PATCH] MapScaleBar: minor optimization

---
 vtm/src/org/oscim/scalebar/MapScaleBar.java | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/vtm/src/org/oscim/scalebar/MapScaleBar.java b/vtm/src/org/oscim/scalebar/MapScaleBar.java
index 4f6854a7..d8f052d7 100644
--- a/vtm/src/org/oscim/scalebar/MapScaleBar.java
+++ b/vtm/src/org/oscim/scalebar/MapScaleBar.java
@@ -1,7 +1,7 @@
 /*
  * Copyright 2010, 2011, 2012, 2013 mapsforge.org
  * Copyright 2014 Ludwig M Brinckmann
- * Copyright 2014-2016 devemux86
+ * Copyright 2014-2019 devemux86
  * Copyright 2014 Erik Duisters
  *
  * This program is free software: you can redistribute it and/or modify it under the
@@ -44,7 +44,7 @@ public abstract class MapScaleBar {
     protected Canvas mapScaleCanvas;
     private int marginHorizontal;
     private int marginVertical;
-    private MapPosition prevMapPosition;
+    private final MapPosition prevMapPosition = new MapPosition();
     protected boolean redrawNeeded;
     protected ScaleBarPosition scaleBarPosition;
     private boolean visible;
@@ -194,7 +194,7 @@ public abstract class MapScaleBar {
      * @return a {@link ScaleBarLengthAndValue} object containing the required scaleBarLength and scaleBarValue
      */
     protected ScaleBarLengthAndValue calculateScaleBarLengthAndValue(DistanceUnitAdapter unitAdapter) {
-        this.prevMapPosition = this.map.getMapPosition();
+        this.map.getMapPosition(this.prevMapPosition);
         double groundResolution = MercatorProjection.groundResolution(this.prevMapPosition);
 
         groundResolution = groundResolution / unitAdapter.getMeterRatio();