Curve direction

# Curve direction
from pymel.core import *
import math
def getPiv(s):
    select(s)
    setToolTo('Move')
    piv = manipMoveContext('Move', q=True, p=True,m=2)
    return piv
def getDist(p1,p2):
    dist = math.sqrt((p1[0] - p2[0])**2 + (p1[1] - p2[1])**2 + (p1[2] - p2[2])**2)
    return dist
oP = ls("originPos")
if oP:
    oP = oP[0].getTranslation()
else:
    oP = [0,0,0]

sl = selected()
cvList = []
for s in sl:
    poS = getPiv(s.cv[0])
    poE = getPiv(s.cv[-1])
    poSD = getDist(poS, oP)
    poED = getDist(poE, oP)
    if poSD > poED:
        reverseCurve(s)