added notes, improved other features and removed most bugs

src/scene.rs

@@ -0,0 +1,27 @@
+pub struct EditorScene {
+    rect: egui::Rect,
+}
+
+impl EditorScene {
+    pub fn new() -> Self {
+        Self {
+            rect: egui::Rect::ZERO,
+        }
+    }
+
+    pub fn ui(&mut self, ctx: &egui::Context) {
+        egui::CentralPanel::default()
+            .frame(egui::Frame::NONE)
+            .show(ctx, |ui| {
+                egui::Scene::default()
+                    .zoom_range(0.1..=10.0)
+                    .show(ui, &mut self.rect, |ui| {
+                        egui::Resize::default().auto_sized().show(ui, |ui| {
+                            ui.group(|ui| {
+                                ui.label("Scene");
+                            });
+                        });
+                    });
+            });
+    }
+}