Function PolygonCircumference

recipes/Python/578048_IFS_fractal/recipe-578048.py:15–23

(corners)

# Circumference of Polygon
# corners must be ordered in clockwise or counter-clockwise direction
def PolygonCircumference(corners):
    n = len(corners) # of corners
    circumference = 0.0
    for i in range(n):
        j = (i + 1) % n
        dx = corners[j][0] - corners[i][0]
        dy = corners[j][1] - corners[i][1]
        circumference += math.hypot(dx, dy)
    return circumference

##fractalName = "Barnsley Fern"
##mat=[[0.0, 0.0, 0.0, 0.16, 0.0, 0.0, 0.01],