Cleanup.

Show number of points.

oi-sensor/oi-sensor.py

@@ -42,7 +42,7 @@ async def main():
     cv2.namedWindow("Trackbars")
     cv2.createTrackbar("L-H", "Trackbars", 0, 180, nothing)
     cv2.createTrackbar("L-S", "Trackbars", 0, 255, nothing)
-    cv2.createTrackbar("L-V", "Trackbars", 3, 255, nothing)
+    cv2.createTrackbar("L-V", "Trackbars", 0, 255, nothing)
     cv2.createTrackbar("U-H", "Trackbars", 135, 180, nothing)
     cv2.createTrackbar("U-S", "Trackbars", 190, 255, nothing)
     cv2.createTrackbar("U-V", "Trackbars", 190, 255, nothing)
@@ -79,18 +79,16 @@ async def main():
 
                 if area > 400:
                     cv2.drawContours(frame, [approx], 0, (0, 0, 0), 5)
-                    if len(approx) == 3:
+                    number_of_points = len(approx)
+                    if number_of_points == 3:
                         cv2.putText(frame, "Triangle", (x, y), font, 1, (0, 0, 0))
                         await myvar.write_value(1.0)
-                        #_logger.info("Triangle")
-                    elif len(approx) == 4:
+                    elif number_of_points == 4:
                         cv2.putText(frame, "Rectangle", (x, y), font, 1, (0, 0, 0))
                         await myvar.write_value(2.0)
-                        #_logger.info("Rectangle")
-                    elif 7 < len(approx) < 20:
-                        cv2.putText(frame, "Circle", (x, y), font, 1, (0, 0, 0))
+                    elif 7 < number_of_points < 20:
+                        cv2.putText(frame, "Circle (%s)" %number_of_points, (x, y), font, 1, (0, 0, 0))
                         await myvar.write_value(3.0)
-                        #_logger.info("Circle")
                     else:
                         await myvar.write_value(0.0)