code: def generate_preset_test_voxels_visual_hull_render():
      """Generates preset test for the visual hull voxels rendering function."""
      voxels = np.array(
          [
              [
                  [
                      [[0, 0, 0], [0, 0, 0], [0, 0, 0]],
                      [[0.3, 0.7, 0.1], [1, 0.1, 0], [0.2, 0.1, 0.8]],
                      [[0.1, 0.9, 0], [0.2, 1, 0.4], [0.3, 0.2, 0]],
                  ],
                  [
                      [
                          [0.15, 0.69, 0.57],
                          [0.07, 0.33, 0.55],
                          [0, 0, 0],
                      ],
                      [
                          [0.71, 0.61, 0.43],
                          [1, 0.1, 0],
                          [0.71, 0.61, 0.43],
                      ],
                      [
                          [0.17, 0.01, 1.22],
                          [0.2, 1, 0.4],
                          [0.67, 0.94, 0.14],
                      ],
                  ],
                  [
                      [[0, 0, 0], [0.17, 0.33, 0.55], [0, 0, 0]],
                      [
                          [0.71, 0.61, 0.43],
                          [1, 0.1, 0],
                          [0.71, 0.61, 0.43],
                      ],
                      [
                          [0.1, 0.9, 0],
                          [0.2, 1, 0.4],
                          [0.88, 0.09, 0.45],
                      ],
                  ],
                  [
                      [[1, 0, 0], [0, 0, 0], [1, 0, 0]],
                      [
                          [0.88, 0.09, 0.5],
                          [0.71, 0.61, 0.4],
                          [0.14, 0, 0.22],
                      ],
                      [
                          [0.71, 0.61, 0.45],
                          [0.71, 0.7, 0.43],
                          [0.3, 0.2, 0],
                      ],
                  ],
              ],
              [
                  [
                      [[0, 0, 0], [0, 0, 0], [0, 0, 1]],
                      [
                          [0.3, 0.7, 0.1],
                          [0.15, 0.69, 0.5],
                          [0.88, 0.09, 0.45],
                      ],
                      [
                          [0.07, 0.33, 0.55],
                          [0.2, 1, 0.4],
                          [0.4, 0.34, 0.43],
                      ],
                  ],
                  [
                      [[0, 1, 0], [0, 1, 0], [0, 1, 0]],
                      [
                          [0.19, 0.06, 0.24],
                          [1, 0.1, 0],
                          [0.2, 0.1, 0.8],
                      ],
                      [
                          [0.67, 0.94, 0.14],
                          [0.2, 1, 0.4],
                          [0.15, 0.69, 0.57],
                      ],
                  ],
                  [
                      [[0, 0, 0], [0, 0, 0], [0, 0, 0]],
                      [
                          [0.74, 0.67, 0.4],
                          [0.64, 0.8, 0.19],
                          [0.9, 0.6, 0.48],
                      ],
                      [
                          [0.1, 0.9, 0],
                          [0.02, 0.37, 0.56],
                          [0.62, 0.98, 0.19],
                      ],
                  ],
                  [
                      [[0.04, 0.87, 0.37], [0, 0, 0], [1, 0, 0]],
                      [
                          [0.3, 0.7, 0.1],
                          [0.24, 0.12, 0.7],
                          [0.76, 0.64, 0.79],
                      ],
                      [
                          [0.7, 0.2, 0.2],
                          [0.4, 1, 0.9],
                          [0.19, 0.66, 0.03],
                      ],
                  ],
              ],
          ]
      )
  
      images = np.array(
          [
              [
                  [
                      [0, 0, 0],
                      [0.77686984, 0.59343034, 0.59343034],
                      [0.45118836, 0.87754357, 0.32967995],
                  ],
                  [
                      [0.19748120, 0.63940506, 0.67372021],
                      [0.91107838, 0.73286470, 0.57683792],
                      [0.64654532, 0.85772593, 0.82795514],
                  ],
                  [
                      [0.15633518, 0.28107627, 0.42305019],
                      [0.91107838, 0.73286470, 0.57683792],
                      [0.69272126, 0.86330457, 0.57258507],
                  ],
                  [
                      [0.86466472, 0, 0],
                      [0.82271559, 0.50341470, 0.67372021],
                      [0.82093385, 0.77909002, 0.58521709],
                  ],
              ],
              [
                  [
                      [0, 0, 0.63212055],
                      [0.73552274, 0.77236231, 0.65006225],
                      [0.48829142, 0.81175293, 0.74842145],
                  ],
                  [
                      [0, 0.950212931, 0],
                      [0.75092470, 0.22894841, 0.64654532],
                      [0.63940506, 0.92792154, 0.67044104],
                  ],
                  [
                      [0, 0, 0],
                      [0.89771579, 0.87381422, 0.65699148],
                      [0.52288608, 0.89460078, 0.52763345],
                  ],
                  [
                      [0.64654532, 0.58104845, 0.30926567],
                      [0.72746821, 0.76776373, 0.79607439],
                      [0.724729, 0.844327, 0.676967],
                  ],
              ],
          ]
      )  # pyformat: disable
  
      return voxels, images
  
imports: import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: generate_preset_test_voxels_visual_hull_render() and returns: voxels,  images