new_contents: # -*- coding: utf-8 -*-
  # vispy: gallery 10
  # Copyright (c) 2015, Vispy Development Team.
  # Distributed under the (new) BSD License. See LICENSE.txt for more info.
  
  """ Demonstrates use of visual.Markers to create a point cloud with a
  standard turntable camera to fly around with and a centered 3D Axis.
  """
  
  import numpy as np
  import vispy.scene
  from vispy.scene import visuals
  
  #
  # Make a canvas and add simple view
  #
  canvas = vispy.scene.SceneCanvas(keys='interactive', show=True)
  view = canvas.central_widget.add_view()
  
  
  # generate data
  pos = np.random.normal(size=(100000, 3), scale=0.2)
  # one could stop here for the data generation, the rest is just to make the
  # data look more interesting. Copied over from magnify.py
  centers = np.random.normal(size=(50, 3))
  indexes = np.random.normal(size=100000, loc=centers.shape[0]/2.,
                             scale=centers.shape[0]/3.)
  indexes = np.clip(indexes, 0, centers.shape[0]-1).astype(int)
  scales = 10**(np.linspace(-2, 0.5, centers.shape[0]))[indexes][:, np.newaxis]
  pos *= scales
  pos += centers[indexes]
  
  # create scatter object and fill in the data
  scatter = visuals.Markers()
  scatter.set_data(pos, edge_color=None, face_color=(1, 1, 1, .5), size=5)
  
  view.add(scatter)
  
  view.camera = 'turntable'  # or try 'arcball'
  
  # add a colored 3D axis for orientation
  axis = visuals.XYZAxis(parent=view.scene)
  
  if __name__ == '__main__':
      import sys
      if sys.flags.interactive != 1:
          vispy.app.run()
  
subject: create simplest scene-based 3D point cloud example. Closes #1028