code: def _compute_bounds(self, axis, view):
      if axis > 1:
          return (0, 0)
      return (0, self._field_shape[axis])
  
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 4 for calling the VectorFieldVisual obj's underlying member method code with example usage: obj._compute_bounds(axis, view) and returns: int,  self, int,  int