Update app.py

app.py

@@ -638,16 +638,20 @@ async(c, o, p, d, n, m)=>{
           BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].material.diffuseTexture.hasAlpha = true;
           BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].material.useAlphaFromDiffuseTexture = true;
           BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1].applyDisplacementMap(m[o_[j]].url, 0, 255, function(m){try{alert(BABYLON.Engine.Version);}catch(e){alert(e);}}, null, null, true, function(e){alert(e);});
+        }
+        loadEditControl();
+        const editControl = new EditControl(BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1], BABYLON.Engine.LastCreatedScene.activeCamera, document.getElementById("model3D").getElementsByTagName("canvas")[0], 1.0, true, 0.02);
+        editControl.enableTranslation();
 
+        for (var j=0; j<o_.length; j++) {
           const opt = document.createElement("option");
           opt.value = j;
           opt.innerText = j;
+          if (j==0) {
+            opt.selected = true;
+          }
           document.getElementById("cnum").appendChild(opt);
         }
-        loadEditControl();
-        const editControl = new EditControl(BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1], BABYLON.Engine.LastCreatedScene.activeCamera, document.getElementById("model3D").getElementsByTagName("canvas")[0], 1.0, true, 0.02);
-        editControl.enableTranslation();
-        
         document.getElementById("cnum").onchange = function(e) {
           editControl.switchTo(BABYLON.Engine.LastCreatedScene.meshes[BABYLON.Engine.LastCreatedScene.meshes.length-1-parseInt(e.target.value)], true);
         }