class_docstr: A simple class of a 2-dimensional bezier segment
class_docstr_tok: ["A","simple","class","of","a","2-dimensional","bezier","segment"]
docstr: evaluate a point at t
docstr_tok: ["evaluate","a","point","at","t"]
code: def point_at_t(self, t):
      "evaluate a point at t"
      tt = ((1 - t) ** self._orders)[::-1] * t**self._orders
      _x = np.dot(tt, self._px)
      _y = np.dot(tt, self._py)
      return _x, _y
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import six
  import numpy
  from matplotlib.path import Path
  from operator import xor
  import warnings
label_desc: Use image node_id 2 for calling the BezierSegment obj's underlying member method code with example usage: obj.point_at_t(t) and returns: _x,  _y