code: def _prepare_transforms(self, view):
      view.view_program.vert["transform"] = view.get_transform()
  
file_path: vispy/examples/demo/scene/flow_lines.py
imports: from __future__ import division
  from vispy import app, scene, visuals, gloo
  from vispy.util import ptime
  import numpy
label_desc: Use image node_id 2 for calling the VectorFieldVisual obj's underlying member method code with example usage: obj._prepare_transforms(view) without return types