xy

ti/static/ti/cv.js

@@ -94,7 +94,7 @@ ctx.stroke();
   }
 
   function getPosition(event){
-      var x = event.pageX - canvas.offsetLeft;
-      var y = event.pageY - canvas.offsetTop;
+      var x = event.x;
+      var y = event.y;
       return {X: x, Y: y};
   }