code: def calcQuadraticParameters(pt1, pt2, pt3):
      x2, y2 = pt2
      x3, y3 = pt3
      cx, cy = pt1
      bx = (x2 - cx) * 2.0
      by = (y2 - cy) * 2.0
      ax = x3 - cx - bx
      ay = y3 - cy - by
      return (ax, ay), (bx, by), (cx, cy)
  
imports: from fontTools.misc.arrayTools import calcBounds, sectRect, rectArea
  from fontTools.misc.transform import Identity
  import math
  from collections import namedtuple
  from math import sqrt, acos, cos, pi
label_desc: Use image node_id 27 for calling a global function with example usage: calcQuadraticParameters(pt1, pt2, pt3) and returns: ax,  ay,  bx,  by,  cx,  cy