Refactor: Generalize Renderer refresher setup

CityDoctorParent/Extensions/CityDoctorGUI/src/main/java/de/hft/stuttgart/citydoctor2/gui/Renderer.java

@@ -227,20 +227,38 @@ public class Renderer {
         return polygons;
     }
 
-    public void render(BuildingPart bp) {
+    public void setupRefresher(CityObject co) {
         refresher = () -> {
-            Set<ConcretePolygon> setupBuildingPartPolygons = setupBuildingPartPolygons(bp);
-            mainWindow.zoomOutForBoundingBox(BoundingBox.of(setupBuildingPartPolygons));
-            render(setupBuildingPartPolygons);
+            CityObjectCollector collector = new CityObjectCollector();
+            co.accept(collector);
+            Set<ConcretePolygon> objectPolygons = new HashSet<>();
+            collector.getCityObjects().forEach(object -> addPolygons(object, objectPolygons));
+            mainWindow.zoomOutForBoundingBox(BoundingBox.of(objectPolygons));
+            render(objectPolygons);
             Platform.runLater(() -> {
-                errorUpdater = () -> displayErrors(bp);
+                errorUpdater = () -> displayErrors(co);
                 errorUpdater.run();
-                addGenericAttributesToView(bp);
+                addGenericAttributesToView(co);
             });
         };
         refresher.run();
     }
 
+    public void render(BuildingPart bp) {
+//        refresher = () -> {
+//            Set<ConcretePolygon> setupBuildingPartPolygons = setupBuildingPartPolygons(bp);
+//            mainWindow.zoomOutForBoundingBox(BoundingBox.of(setupBuildingPartPolygons));
+//            render(setupBuildingPartPolygons);
+//            Platform.runLater(() -> {
+//                errorUpdater = () -> displayErrors(bp);
+//                errorUpdater.run();
+//                addGenericAttributesToView(bp);
+//            });
+//        };
+//        refresher.run();
+        setupRefresher(bp);
+    }
+
     private Set<ConcretePolygon> setupBuildingPartPolygons(BuildingPart bp) {
         Set<ConcretePolygon> polygons = new HashSet<>();
         addPolygons(bp, polygons);