test multi touch

2020-04-15 20:59:35 +02:00 · 2020-04-15 20:59:35 +02:00 · 4b86ec3eaa
parent 06f7bd0ed9
commit 4b86ec3eaa
1 changed files with 4 additions and 0 deletions
--- a/public/js/whiteboard.js
+++ b/public/js/whiteboard.js
@ -87,6 +87,10 @@ var whiteboard = {
                return;
            }

+            if(e.touches.length > 1) {
+                return; // if more than one fingers are touching the screen, dont draw
+            }
+
            _this.drawFlag = true;
            _this.prevX = (e.offsetX || e.pageX - $(e.target).offset().left) + 1;
            _this.prevY = (e.offsetY || e.pageY - $(e.target).offset().top) + 1;