Initial Clock Format

rpi-rgb-led-matrix-master/bindings/python/samples/grayscale-block.py

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+#!/usr/bin/env python
+from samplebase import SampleBase
+import time
+
+
+class GrayscaleBlock(SampleBase):
+    def __init__(self, *args, **kwargs):
+        super(GrayscaleBlock, self).__init__(*args, **kwargs)
+
+    def run(self):
+        sub_blocks = 16
+        width = self.matrix.width
+        height = self.matrix.height
+        x_step = max(1, width / sub_blocks)
+        y_step = max(1, height / sub_blocks)
+        count = 0
+
+        while True:
+            for y in range(0, height):
+                for x in range(0, width):
+                    c = sub_blocks * int(y / y_step) + int(x / x_step)
+                    if count % 4 == 0:
+                        self.matrix.SetPixel(x, y, c, c, c)
+                    elif count % 4 == 1:
+                        self.matrix.SetPixel(x, y, c, 0, 0)
+                    elif count % 4 == 2:
+                        self.matrix.SetPixel(x, y, 0, c, 0)
+                    elif count % 4 == 3:
+                        self.matrix.SetPixel(x, y, 0, 0, c)
+
+            count += 1
+            time.sleep(2)
+
+
+# Main function
+if __name__ == "__main__":
+    grayscale_block = GrayscaleBlock()
+    if (not grayscale_block.process()):
+        grayscale_block.print_help()