message: adapt to new viewer features in pygame_viewer
diff: @@ -132,10 +132,12 @@ class PygameViewer(BaseViewer):
  def clear(self):
  self.screen_surface.fill((255, 255, 255))
  - """
  - points: numpy array
  - return: numpy array
  + def getColorFromMap(self, float_color):
  + # TODO
  + return (1.0, 0, 0)
  + def get_aspect_ratio(self):
  + return 1
  The origin of pygame surface is located at top left, increment downward
  therefore all the coordinates need to be transformed
  