Add script from first meeting

The script kind of strobes the lights gently and the parameters are
configurable with global variables. Right now, the only color used is
blue.

1 files changed, 80 insertions, 0 deletions

diff --git a/bridge.py b/bridge.py
new file mode 100644
index 0000000..6e2ce02
--- /dev/null
+++ b/bridge.py
@@ -0,0 +1,80 @@
+#!/usr/bin/python
+"""Simple demo of oscillating colors."""
+from __future__ import division
+import lumiversepython
+import random
+import time
+
+FRAME_RATE = 44
+MIN_VALUE = 0
+MAX_VALUE = 1
+MAX_TIME = 4
+MIN_TIME = 0.3
+
+def get_all_lights(rig):
+    """Return a list of all panels."""
+    return [rig.select('$side={}[$sequence={}]'.format(j, i)) for j in ['top', 'bot'] for i in range(1, 200)]
+
+
+def restrict(low, x, high):
+    """Return a value low <= v <= high, and equal to x if possible."""
+    return max(low, min(x, high))
+
+
+def random_change():
+    """Return a random amount that a light should change each frame."""
+    min_time = int(MIN_TIME * FRAME_RATE)
+    max_time = int(MAX_TIME * FRAME_RATE)
+    rands = [random.randint(min_time, max_time) for _ in range(5)]
+    rand_binom = sum(rands) / 5
+    #inverse = (rand_binom - (MAX_VALUE - MIN_VALUE) / 2) % (MAX_VALUE - MIN_VALUE) + MIN_VALUE
+    return 1 / random.randint(min_time, max_time)
+
+
+def demo(lights, rig):
+    """Do some light things."""
+    light_status = [
+        {
+            'is_increasing': True,
+            'change': random_change(),
+            'light': light,
+            'current_value': 0,
+        }
+            for light in lights
+    ]
+    while True:
+        for light_s in light_status:
+            is_increasing = light_s['is_increasing']
+            change = light_s['change']
+            light = light_s['light']
+            current_value = light_s['current_value']
+            new_value = restrict(
+                MIN_VALUE, current_value + change * (int(is_increasing) * 2 - 1), MAX_VALUE
+            )
+            light.setRGBRaw(0, 0, new_value)
+            light_s['current_value'] = new_value
+            if new_value in [MIN_VALUE, MAX_VALUE]:
+                light_s['is_increasing'] = not is_increasing
+                light_s['change'] = random_change()
+        rig.updateOnce()
+        time.sleep(1 / FRAME_RATE)
+
+
+def panels(lights, rig):
+    for light in lights:
+        light.setRGBRaw(1, 1, 1)
+        rig.updateOnce()
+        time.sleep(1)
+        light.setRGBRaw(0, 0, 0)
+
+
+def main():
+    """Run show."""
+    rig = lumiversepython.Rig('/home/teacher/Lumiverse/PBridge.rig.json')
+    rig.init()
+    lights = get_all_lights(rig)
+    demo(lights, rig)
+    #panels(lights, rig)
+
+if __name__ == '__main__':
+    main()