code: def on_draw(self, ev):
      gloo.clear(color="w", depth=True)
      for vis in self.visuals:
          vis.draw()
  
file_path: vispy/examples/basics/visuals/image_transforms.py
imports: import numpy
  import vispy.app
  from vispy import gloo
  from vispy import visuals
  from vispy.visuals.transforms import MatrixTransform, STTransform, arg_to_array, LogTransform, PolarTransform, BaseTransform
  from image_visual import get_image
label_desc: Use image node_id 2 for calling the Canvas obj's underlying member method code with example usage: obj.on_draw(ev) without return types