From 3366da76df1ca995c33dff2f5ce36ffc3d745c67 Mon Sep 17 00:00:00 2001
From: cristi8 <cristi8@gmail.com>
Date: Mon, 17 Jan 2022 13:47:20 +0200
Subject: [PATCH] viewer - mobile pinch-zoom issue

---
 packages/viewer/src/modules/SelectionHelper.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/viewer/src/modules/SelectionHelper.js b/packages/viewer/src/modules/SelectionHelper.js
index 8661bb0aa..c96617717 100644
--- a/packages/viewer/src/modules/SelectionHelper.js
+++ b/packages/viewer/src/modules/SelectionHelper.js
@@ -86,7 +86,11 @@ export default class SelectionHelper extends EventEmitter {
     this.touchLocation
 
     this.viewer.renderer.domElement.addEventListener( 'touchstart', ( e ) => { this.touchLocation = e.targetTouches[0] } )
-    this.viewer.renderer.domElement.addEventListener( 'touchend', ( ) => {
+    this.viewer.renderer.domElement.addEventListener( 'touchend', ( e ) => {
+      // Ignore the first `touchend` when pinch-zooming (so we don't consider double-tap)
+      if ( e.targetTouches.length > 0 ) {
+        return
+      }
       let currentTime = new Date().getTime()
       let tapLength = currentTime - this.lastTap
       clearTimeout( this.tapTimeout )