code: def shuffle_points(batch_data):
      """Shuffle orders of points in each point cloud -- changes FPS behavior.
      Use the same shuffling idx for the entire batch.
      Input:
          BxNxC array
      Output:
          BxNxC array
      """
      idx = np.arange(batch_data.shape[1])
      np.random.shuffle(idx)
      return batch_data[:, idx, :]
  
file_path: dgl/examples/pytorch/pointcloud/pointnet/provider.py
imports: import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: shuffle_points(batch_data) and returns: batch_data