class_docstr: Affine transformation class
  
  Parameters
  ----------
  matrix : array-like | None
      4x4 array to use for the transform.
code: def __init__(self, matrix=None):
      super(MatrixTransform, self).__init__()
      if matrix is not None:
          self.matrix = matrix
      else:
          self.reset()
  
imports: from __future__ import division
  import numpy
  from ...util import transforms
  from ...geometry import Rect
  from ._util import arg_to_vec4, as_vec4
  from .base_transform import BaseTransform
label_desc: Use image node_id 1 to create a new MatrixTransform object from inherited base classes: BaseTransform with example: obj = MatrixTransform(matrix)