{
        for (let i = 0; i <= 24; i++) {
          const r = .6 + Math.random() * .4;
          const g = .6 + Math.random() * .4;
          const b = .6 + Math.random() * .4;
          boxes_left.push(addBox(0, 0, 0, r, g, b));
          boxes_right.push(addBox(0, 0, 0, r, g, b));
          tracked_boxes_left.push(addBox(0, 0, 0, r, g, b));
          tracked_boxes_right.push(addBox(0, 0, 0, r, g, b));
        }
      }
      if (indexFingerBoxes.input_left) {
        scene.removeNode(indexFingerBoxes.left