UnaiM

# Retime a tracked object to better fit a target curve
# Select two Transform nodes: the first with a jerky tracked curve, the
# second with a smooth target curve
# Group effort by Lewis Saunders, Unai Martínez Barredo, Erwan Leroy

# Make a function to calculate the distance between two points
def distance(a, b):
    return pow((a[0]-b[0])**2 + (a[1]-b[1])**2, 0.5)

# Find the closest point to p on the line ab