Base class for all 3D transforms. Transform3D inherits from DualTransform because 3D transforms can be applied to both volumes and masks, similar to how 2D DualTransforms work with images and masks. Targets: volume: 3D numpy array of shape (D, H, W) or (D, H, W, C) volumes: Batch of 3D arrays of shape (N, D, H, W) or (N, D, H, W, C) mask: 3D numpy array of shape (D, H, W) masks: Batch of 3D arrays of shape (N, D, H, W) keypoints: 3D numpy array of shape (N, 3)