Cornu Animation Question

I am new to both NodeBox and Python. I have been experimenting with cornu curves and animation. I want to change the points in the path each frame so that I can get a fluid looking shape in an animation. I started out with the following code which I had thought would draw a static circle. Instead on each call to the drawpath function the path is changed and the curve quickly enlarges and moves off the canvas. Is this the expected behavior? It seems that the drawpath is actually changing the points as part of its algorithm.

Thank you in advance. This is the most amazing software!

speed(5)
size(200,200)
cornu = ximport("cornu")
 
def setup():
    global mypath
    mypath = []
    mypath.append((.3,.1))
    mypath.append((.6,.3))
    mypath.append((.3,.6))
 
def draw():
    global mypath
    cornu.drawpath(mypath, close=True)

This seems to be a bug in the cornu library. To make your example work, I would suggest changing the last line to the following, which copies the list before passing it of to drawpath.

cornu.drawpath(list(mypath), close=True)

That does the trick for now.

Thank you,

Jim

I just released a new Cornu library that fixes the bug.

Kind regards,

Frederik