Add Gaynbow program

pyleds/program/siinus/Gaynbow.py

@@ -0,0 +1,33 @@
+from lib.Program import Program
+from rpi_ws281x import Color
+import time
+
+
+def name():
+    return 'RGBT Gaynbow'
+
+
+def wheel(pos):
+    """Generate rainbow colors across 0-255 positions."""
+    if pos < 85:
+        return Color(pos * 3, 255 - pos * 3, 0)
+    elif pos < 170:
+        pos -= 85
+        return Color(255 - pos * 3, 0, pos * 3)
+    else:
+        pos -= 170
+        return Color(0, pos * 3, 255 - pos * 3)
+
+
+class Gaynbow(Program):
+    def run(self, args: [] = None):
+        wait_ms = 20
+        iterations = 5
+        while self.get_loop().status():
+            """Draw rainbow that uniformly distributes itself across all pixels."""
+            for j in range(256 * iterations):
+                for i in range(self._lm.count_pixels()):
+                    self._lm.set_pixel_color(i, wheel(
+                        (int(i * 256 / self._lm.count_pixels()) + j) & 255))
+                self._lm.show()
+                time.sleep(wait_ms / 1000.0)