move rainbow generation to lights

so we can support lights with multiple pixels properly

dmx_queue.py

@@ -1,5 +1,4 @@
 import logging
-from colorsys import hsv_to_rgb
 from queue import Empty
 from threading import Thread
 from time import sleep
@@ -145,24 +144,14 @@ class DMXQueue:
                 self.queue.task_done()
             except Empty:
                 if self.config.rainbow.enable:
-                    degrees_per_step = 360 / len(self.lights)
-
                     for idx, light in enumerate(self.lights):
-                        light_degrees_dec = (
+                        self._bulk(*light.rainbow(
-                            (rotation + (idx * degrees_per_step)) % 360 / 360
+                            idx,
-                        )
+                            rotation,
-                        r, g, b = hsv_to_rgb(
+                            len(self.lights),
-                            light_degrees_dec,
+                            self.config.rainbow.intensity,
-                            1,
+                            self.config.rainbow.brightness,
-                            self.config.rainbow.intensity / 100,
+                        ))
-                        )
-
-                        light.red = int(r * 255)
-                        light.green = int(g * 255)
-                        light.blue = int(b * 200)
-                        light.white = 0
-                        light.intensity = self.config.rainbow.brightness
-                        self._bulk(*light.dump())
 
                     if self.config.rainbow.speed >= 25:
                         rotation = rotation + 1

lights/common.py

@@ -1,4 +1,5 @@
 import logging
+from colorsys import hsv_to_rgb
 
 LOG = logging.getLogger('DMX')
 
@@ -22,3 +23,21 @@ class BaseDMXLight:
         ret = self._dump()
         LOG.debug(f'{str(self)} -> {ret[1]}')
         return ret
+
+    def rainbow(self, idx, angle, number_of_lights, intensity, brightness):
+        my_degrees_dec = (
+            (angle + (idx * (360 / number_of_lights))) % 360 / 360
+        )
+        r, g, b = hsv_to_rgb(
+            my_degrees_dec,
+            1,
+            intensity / 100,
+        )
+
+        self.red = int(r * 255)
+        self.green = int(g * 255)
+        self.blue = int(b * 255)
+        self.white = 0
+        self.intensity = brightness
+
+        return self.dump()