Make the default scene an empty one; add an example scene

macrovision.js

@@ -2845,7 +2845,7 @@ document.addEventListener("DOMContentLoaded", () => {
     
 
     if (param === null) {
-        scenes["Default"]();
+        scenes["Empty"]();
     }
 
     else {
@@ -2861,7 +2861,7 @@ document.addEventListener("DOMContentLoaded", () => {
             importScene(data);
         } catch (err) {
             console.error(err);
-            scenes["Default"]();
+            scenes["Empty"]();
 
             // probably wasn't valid data 
         }

presets/scenes.js

@@ -1,10 +1,12 @@
 const scenes = {};
 
-scenes["Default"] = () => {
-    importScene({ "entities": [{ "name": "Fen", "scale": 1, "view": "back", "x": "0", "y": "0" }], "world": { "height": 2.9053707516337908, "unit": "meters" }, "version": 0 });
-    fitWorld(true);
-}
 
+scenes["Example"] = () => {
+    importScene({"entities":[{"name":"Fen","customName":"Fen","scale":5.436062065275549,"view":"back","x":"0","y":"0","priority":0,"brightness":1},{"name":"Cars","customName":"Cars","scale":1,"view":"Honda Civic (Top)","x":"3.6430974462612693","y":"7.408826784765282","priority":0,"brightness":1},{"name":"Two-Story Home","customName":"Two-Story Home","scale":1,"view":"building","x":"9.566315322175566","y":"0","priority":0,"brightness":1},{"name":"Human","customName":"Human","scale":1,"view":"man1","x":"0","y":"0","priority":0,"brightness":1},{"name":"Buses","customName":"Buses","scale":1,"view":"City Bus (Side)","x":"-8.725600526884504","y":"0","priority":0,"brightness":1},{"name":"Street Lamps","customName":"Street Lamps","scale":1,"view":"residential","x":"3.1463114308620046","y":"0","priority":0,"brightness":1}],"world":{"height":13.411200000000004,"unit":"meters","x":0.6256284987277357,"y":0},"version":3})
+}
+scenes["Empty"] = () => {
+    importScene({ "entities": [], "world": { "height": 3, "unit": "meters" }, "version": 0 });
+}
 function makeSlice(min, max) {
     return () => {
         const characters = availableEntities["characters"].filter(x => {