From d9a61210580c3172e2dde0f5a2c29d444adcbae0 Mon Sep 17 00:00:00 2001
From: Frederic Junod <frederic.junod@camptocamp.com>
Date: Wed, 14 Feb 2018 14:37:38 +0100
Subject: [PATCH] Don't call view.getState in DragPan interaction

Reduce garbage generation from the function response (Object)
---
 src/ol/interaction/DragPan.js | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/ol/interaction/DragPan.js b/src/ol/interaction/DragPan.js
index 455d6229f4..055b876e90 100644
--- a/src/ol/interaction/DragPan.js
+++ b/src/ol/interaction/DragPan.js
@@ -77,11 +77,10 @@ function handleDragEvent(mapBrowserEvent) {
       const deltaY = centroid[1] - this.lastCentroid[1];
       const map = mapBrowserEvent.map;
       const view = map.getView();
-      const viewState = view.getState();
       let center = [deltaX, deltaY];
-      scaleCoordinate(center, viewState.resolution);
-      rotateCoordinate(center, viewState.rotation);
-      addCoordinate(center, viewState.center);
+      scaleCoordinate(center, view.getResolution());
+      rotateCoordinate(center, view.getRotation());
+      addCoordinate(center, view.getCenter());
       center = view.constrainCenter(center);
       view.setCenter(center);
     }