class_docstr: An Axis class for the 3D plots.
code: def active_pane(self, renderer):
      mins, maxs, centers, deltas, tc, highs = self._get_coord_info(
          renderer
      )
      info = self._axinfo
      index = info["i"]
      if not highs[index]:
          loc = mins[index]
          plane = self._PLANES[2 * index]
      else:
          loc = maxs[index]
          plane = self._PLANES[2 * index + 1]
      xys = np.array([tc[p] for p in plane])
      return xys, loc
  
imports: import inspect
  import numpy
  import matplotlib
  from matplotlib import _api, artist, lines, axis, patches, transforms, colors
  from .None import art3d, proj3d
label_desc: Use image node_id 19 for calling the Axis obj's underlying member method code with example usage: obj.active_pane(renderer) and returns: xys,  loc