Add zone switching (#5)

Pixel calculation error

Add zone switching

Co-authored-by: siinus <pearu@siinus.com>
Reviewed-on: #5

pyleds/lib/Regions.py

@@ -0,0 +1,35 @@
+class Regions(object):
+    _pixelsEnabled: [] = []
+    _regions: [] = []
+
+    def __init__(self, strip_length: int, splitters: []):
+        self._length: int = strip_length
+        start_pixel = 0
+        for i in splitters:
+            if i > self._length:
+                raise ValueError('splitter out of bounds, you idiot')
+            self._regions.append([start_pixel, i + 1, True])
+            start_pixel = i + 1
+
+        self._regions.append([start_pixel, self._length, True])
+        for i in range(self._length):
+            self._pixelsEnabled.append(True)
+
+    def region_switch(self, region_id: int, enabled: bool):
+        pixel_region = self._regions[region_id]
+        for i in range(pixel_region[0], pixel_region[1]):
+            self._pixelsEnabled[i] = enabled
+        self._regions[region_id][2] = enabled
+
+    def is_pixel_enabled(self, pixel_id: int):
+        return self._pixelsEnabled[pixel_id]
+    
+    def switch_region(self, region_id: int):
+        status: bool = self._regions[region_id][2]
+        self.region_switch(region_id, not status)
+
+    def list_region_ids(self):
+        result = []
+        for i in range(len(self._regions)):
+            result.append(i)
+        return result