Update app.py

app.py

@@ -603,9 +603,9 @@ async(c, o, b, p, d, n, m)=>{
         document.getElementById("model3D").getElementsByTagName("canvas")[0].oncontextmenu = function(e){e.preventDefault();}
         document.getElementById("model3D").getElementsByTagName("canvas")[0].ondrag = function(e){e.preventDefault();}
 
-        if (o == "") {o += n;}
-        alert(o);
         var o_ = o.split(",");
+        o_.push(n);
+        o_.filter(function(value, index){ return o_.indexOf(value) == index });
         var dome = [];
         for (var j=0; j<o_.length; j++) {
           o_[j] = parseInt(o_[j]);