diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index ebe3fd9..9d797dc 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -5,9 +5,7 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="ae2847d5-ce86-4d84-8e66-f1369f1438e2" name="Changes" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/starsky_presenter/resources/objects.yml" beforeDir="false" afterPath="$PROJECT_DIR$/src/starsky_presenter/resources/objects.yml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/starsky_presenter/resources/scenes.yml" beforeDir="false" afterPath="$PROJECT_DIR$/src/starsky_presenter/resources/scenes.yml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
diff --git a/src/starsky_presenter/controller/controller.py b/src/starsky_presenter/controller/controller.py
index 945abad..6e47783 100644
--- a/src/starsky_presenter/controller/controller.py
+++ b/src/starsky_presenter/controller/controller.py
@@ -4,12 +4,13 @@ from time import time
 
 
 class Controller(QObject):
-    def __init__(self, window, screen, parent=None):
+    def __init__(self, window, screen, max_scene, parent=None):
         super().__init__(parent)
         self.window = window
         self.last_close_press = 0
         self.successful_clicks = 0
         self.screen = screen
+        self.max_scene = max_scene
 
     @pyqtSlot()
     def close_application(self):
@@ -26,6 +27,8 @@ class Controller(QObject):
 
     @pyqtSlot(int)
     def select_scene(self, scene: int):
+        if scene >= self.max_scene:
+            return
         self.screen.last_scene = self.screen.active_scene
         self.screen.active_scene = scene
         self.screen.scene_time = 0
\ No newline at end of file
diff --git a/src/starsky_presenter/controller/window.py b/src/starsky_presenter/controller/window.py
index 8bf8fb7..9ab831a 100644
--- a/src/starsky_presenter/controller/window.py
+++ b/src/starsky_presenter/controller/window.py
@@ -8,12 +8,12 @@ from starsky_presenter.projection.screen import Screen
 
 
 class ControlWindow:
-    def __init__(self, screen):
+    def __init__(self, screen, max_scene):
         self.app = QGuiApplication([])
         self.running = True
 
         self.engine = QQmlApplicationEngine(self.app)
-        self.controller = Controller(self, screen)
+        self.controller = Controller(self, screen, max_scene)
         self.engine.quit.connect(self.app.quit)
         self.engine.rootContext().setContextProperty("controller_backend", self.controller)
         self.engine.load(f"{Path(__file__).parent.parent}/resources/main_window.qml")
diff --git a/src/starsky_presenter/entry.py b/src/starsky_presenter/entry.py
index 6cf8c8f..7408e6e 100644
--- a/src/starsky_presenter/entry.py
+++ b/src/starsky_presenter/entry.py
@@ -30,10 +30,15 @@ def cli_main():
     scenes = yaml.safe_load(reader.open_resource('resources/scenes.yml'))
     objects = yaml.safe_load(reader.open_resource('resources/objects.yml'))
 
-    scene_data = [{ obj['sid']: deepcopy(obj) for obj in objects["stars"] }] + [
-        { obj['sid']: dict_update(obj, scenes[i][obj['sid']]) if scenes[i] and obj['sid'] in scenes[i] else deepcopy(obj) for obj in objects["stars"] }
+    scene_data = [
+        dict_update(
+            { obj['sid']: dict_update(obj, scenes[i][obj['sid']]) if scenes[i] and obj['sid'] in scenes[i] else deepcopy(obj) for obj in objects["stars"] },
+            {
+                'transition': scenes[i]['transition'],
+            }
+        )
         if i < len(scenes) else { obj['sid']: deepcopy(obj) for obj in objects["stars"] }
-        for i in range(0,8)
+        for i in range(0,9)
     ]
 
     star_references = {}
@@ -57,17 +62,24 @@ def cli_main():
     # load the background image
     background = pygame.image.load(reader.open_resource(f"resources/{objects['background']}"))
 
-    screen = Screen(stars, background)
-    control_window = ControlWindow(screen)
+    screen = Screen(stars, background, objects['framerate'])
+    control_window = ControlWindow(screen, len(scenes))
 
     last_time = time()
+    frame_count = 0
+    fps_update = objects['framerate']
+    star_time = time()
 
     while control_window.is_running():
         control_window.process_events()
         screen.update(scene_data)
-        now = time()
-        print(f"{1/(now - last_time):.02f} fps")
-        last_time = now
+        if frame_count % fps_update == 0:
+            now = time()
+            print(f"{time() - star_time:.3f}s: {1/((now - last_time) / fps_update):.02f} fps")
+            last_time = now
+            frame_count = 0
+
+        frame_count += 1
 
 
     screen.close()
diff --git a/src/starsky_presenter/projection/screen.py b/src/starsky_presenter/projection/screen.py
index 5071680..d19f059 100644
--- a/src/starsky_presenter/projection/screen.py
+++ b/src/starsky_presenter/projection/screen.py
@@ -7,6 +7,20 @@ from math import sin, cos, pi
 from time import time, sleep
 from random import random
 
+INTERPOLATION = {
+    'sin2': lambda x: sin(x) ** 2,
+    'sin': lambda x: sin(x),
+    'cos': lambda x: 1 - cos(x),
+    'lin': lambda x: x
+}
+
+FADE = {
+    (True, True): lambda x: sin(x) ** 2, # fade both
+    (True, False): lambda x: 1 - cos(x), # fade in
+    (False, True): lambda x: sin(x), # fade out
+    (False, False): lambda x: x / (pi/2) # linear
+}
+
 class Star:
     def __init__(self, sid: str, x: int, y: int, alpha: float, rot: float, scale: float, offset: float, image: pygame.Surface):
         self.sid = sid
@@ -20,7 +34,7 @@ class Star:
 
 
 class Screen:
-    def __init__(self, stars: list[Star], background: Surface | None) -> None:
+    def __init__(self, stars: list[Star], background: Surface | None, framerate: float = 30) -> None:
         if not pygame.get_init():
             pygame.init()
         self.screen = pygame.display.set_mode((1920, 1080), display=1, flags=pygame.FULLSCREEN | pygame.DOUBLEBUF | pygame.WINDOWTAKEFOCUS)
@@ -31,6 +45,8 @@ class Screen:
         self.active_scene = 0
         self.last_scene = 0
         self.scene_time: float = 0
+        self.framerate: float = framerate
+        self.overlay = pygame.surface.Surface(self.screen.get_size(), depth=32)
         if background:
             ratio_x = self.screen.get_width() / background.get_width()
             ratio_y = self.screen.get_height() / background.get_height()
@@ -48,17 +64,23 @@ class Screen:
 
 
     def update(self, scene_data):
-        self.screen.fill((0, 0, 0))
+        if not self.background:
+            self.screen.fill((0, 0, 0))
         now = time()
         delta = now - self.last
         self.last = now
 
         self.scene_time += delta
-        weight = sin(min(self.scene_time, pi/2)) ** 2
+        fade_in = scene_data[self.active_scene]['transition']['fade_in']
+        fade_out = scene_data[self.active_scene]['transition']['fade_out']
+        t = FADE[(fade_in, fade_out)](min(self.scene_time / scene_data[self.active_scene]['transition']['t'], 1) * pi/2) * pi/2
+        weight_x = INTERPOLATION[scene_data[self.active_scene]['transition']['x']](t)
+        weight_y = INTERPOLATION[scene_data[self.active_scene]['transition']['y']](t)
+        weight = INTERPOLATION['sin2'](t)
 
-        def update_star_scene(star, old, new, weight):
-            star.x = weight*new[star.sid]['x'] + (1-weight)*old[star.sid]['x']
-            star.y = weight*new[star.sid]['y'] + (1-weight)*old[star.sid]['y']
+        def update_star_scene(star, old, new):
+            star.x = weight_x*new[star.sid]['x'] + (1-weight_x)*old[star.sid]['x']
+            star.y = weight_y*new[star.sid]['y'] + (1-weight_y)*old[star.sid]['y']
             star.rot = weight*new[star.sid]['rot'] + (1-weight)*old[star.sid]['rot']
             star.scale = weight*new[star.sid]['scale'] + (1-weight)*old[star.sid]['scale']
 
@@ -69,7 +91,7 @@ class Screen:
 
         # draw all the star objects
         for star in self.stars:
-            update_star_scene(star, scene_data[self.last_scene], scene_data[self.active_scene], weight)
+            update_star_scene(star, scene_data[self.last_scene], scene_data[self.active_scene])
             star.alpha += star.rot * delta
             computed_scale = star.scale * (self.screen.get_width() / star.image.get_width() / 100)
             scaled = transform.rotozoom(star.image, star.alpha, computed_scale)
@@ -78,12 +100,11 @@ class Screen:
             self.screen.blit(scaled, pos)
 
 
-        overlay = pygame.surface.Surface((1920, 1080), depth=32)
-        overlay.set_alpha(int(255 * (1 - self.brightness)))
-        self.screen.blit(overlay, (0, 0))
+        self.overlay.set_alpha(int(255 * (1 - self.brightness)))
+        self.screen.blit(self.overlay, (0, 0))
 
         pygame.display.flip()
-        self.clock.tick(60)
+        self.clock.tick(self.framerate)
 
     def close(self):
         pygame.quit()
\ No newline at end of file
diff --git a/src/starsky_presenter/resources/objects.yml b/src/starsky_presenter/resources/objects.yml
index 718a407..37ebe25 100644
--- a/src/starsky_presenter/resources/objects.yml
+++ b/src/starsky_presenter/resources/objects.yml
@@ -2,9 +2,10 @@ stars:
   - sid: star-1
     x: 0.1
     y: 0.1
-    scale: 2
+    scale: 5
     alpha: 0
-    rot: 30
+    rot: 5
     offset: 0
     image: nice-star-1.png
-background: background-01.jpg
\ No newline at end of file
+background: background-01.jpg
+framerate: 30git p
\ No newline at end of file
diff --git a/src/starsky_presenter/resources/scenes.yml b/src/starsky_presenter/resources/scenes.yml
index 79ebcb5..69f8776 100644
--- a/src/starsky_presenter/resources/scenes.yml
+++ b/src/starsky_presenter/resources/scenes.yml
@@ -1,8 +1,27 @@
 - star-1:
-    x: 0.5
-    y: 2
-  transition: 5
+    x: 1.1
+    y: 1.1
+  transition:
+    t: 2
+    fade_in: true
+    fade_out: false
+    x: sin
+    y: cos
 - star-1:
     x: 0.5
     y: 0.5
-  transition: 1
+  transition:
+    t: 2
+    fade_in: false
+    fade_out: true
+    x: cos
+    y: sin
+- star-1:
+    x: -0.1
+    y: 1.1
+  transition:
+    t: 2
+    fade_in: true
+    fade_out: false
+    x: sin
+    y: cos
\ No newline at end of file