From 69840b41fc587b53bac872f8a47b044364273314 Mon Sep 17 00:00:00 2001
From: dario <dario@noreply.git.hamburg.ccc.de>
Date: Sat, 16 May 2026 22:07:14 +0200
Subject: [PATCH] add new animation RotatingRainbowBeamerBlack

new animation that disables the lights on the projector side of the room
mostly copied from the kitchenlight effect by tessak9
---
 animation.py    | 25 ++++++++++++++++++++++++-
 dmx.py          |  4 +++-
 views/index.tpl |  6 +++++-
 3 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/animation.py b/animation.py
index f131be8..d20750c 100644
--- a/animation.py
+++ b/animation.py
@@ -239,6 +239,29 @@ class RotatingRainbowKitchenWhite(Animation):
     def name(self):
         return "kitchenlight"
 
+class RotatingRainbowBeamerBlack(Animation):
+    def __init__(self, looptime=50.0):
+        super(RotatingRainbowBeamerBlack, self).__init__()
+        self.looptime = looptime
+        pass
+
+    def update(self, index, count):
+        """
+        Same as RotatingRainbow but the lights on the projector side are mapped to black
+        """
+        if (index in [2, 4, 5, 6]):
+            rgb = (0, 0, 0)
+        else:
+            hue = (time() / self.looptime + (index + 0.0) / count) % 1.0
+            rgb = hsv_to_rgb(hue, 1, 1)
+        return rgb
+
+    def __str__(self):
+        return f"{type(self).__name__}"
+
+    def name(self):
+        return "beamermode"
+
 
 class Chase(Steady):
     def __init__(self, color, looptime=1.0):
@@ -306,4 +329,4 @@ def hsv_to_rgb(h, s, v):
     return [int(r * 255), int(g * 255), int(b * 255)]
 
 def rgb_to_hsv(r, g, b):
-    return colorsys.rgb_to_hsv(r/255,g/255,b/255)
\ No newline at end of file
+    return colorsys.rgb_to_hsv(r/255,g/255,b/255)
diff --git a/dmx.py b/dmx.py
index edafb2f..e7fdd5c 100644
--- a/dmx.py
+++ b/dmx.py
@@ -6,7 +6,7 @@ from time import sleep
 from typing import Union
 
 from animation import Animation, Off, RandomSingle, Steady, FadeTo, RotatingRainbow, Chase, TwoColor, Caramelldansen, \
-    Hackertours, RotatingRainbowKitchenWhite
+    Hackertours, RotatingRainbowKitchenWhite, RotatingRainbowBeamerBlack
 
 
 def ledlog(value):
@@ -154,6 +154,8 @@ class DMX:
                 animation = Hackertours(self._color)
             elif animation == "kitchenlight":
                 animation = RotatingRainbowKitchenWhite()
+             elif animation == "beamermode":
+                animation = RotatingRainbowBeamerBlack()
             else:
                 raise ValueError(f"No such animation {animation}")
         self._animation = animation
diff --git a/views/index.tpl b/views/index.tpl
index 02d19f1..07c0b15 100644
--- a/views/index.tpl
+++ b/views/index.tpl
@@ -25,6 +25,10 @@
         <div>
             <input type="radio" class="js_animation" name="state" id="animation_kitchenlight" value="kitchenlight"/>
             <label for="animation_kitchenlight">Kitchenlight</label>
+        </div>
+         <div>
+            <input type="radio" class="js_animation" name="state" id="animation_beamermode" value="beamermode"/>
+            <label for="animation_kitchenlight">Beamer Mode</label>
         </div>
         % end
         <div>
@@ -50,4 +54,4 @@
     </fieldset>
 </div>
 </body>
-</html>
\ No newline at end of file
+</html>