fix(interaction): two fingers drag bug (#767)

Co-authored-by: Cristiano Coelho <[email protected]>
visjs · Jun 3, 2020 · 97068d7 · 97068d7
1 parent fb2e090
commit 97068d7
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/lib/network/modules/InteractionHandler.js b/lib/network/modules/InteractionHandler.js
@@ -287,6 +287,12 @@ class InteractionHandler {
    * @private
    */
   onDragStart(event) {
+    // if already dragging, do not start
+    // this can happen on touch screens with multiple fingers
+    if(this.drag.dragging){
+      return;
+    }
+
     //in case the touch event was triggered on an external div, do the initial touch now.
     if (this.drag.pointer === undefined) {
       this.onTouch(event);