Correct visual output is a closed ring
Original Java code was:
```
for (int i = 0; i <= numPoints; i++) {
```
@@ -26,7 +26,7 @@ def draw():
angleStep = 180.0 / numPoints
beginShape(TRIANGLE_STRIP)
- for i in range(numPoints):
+ for i in range(numPoints + 1):
px = x + cos(radians(angle)) * outsideRadius
py = y + sin(radians(angle)) * outsideRadius
angle += angleStep
