def get_projective_transform(center: Tensor, angles: Tensor, scales: Tensor) -> Tensor:
    r"""Calculate the projection matrix for a 3D rotation.

    .. warning::
        This API signature it is experimental and might suffer some changes in the future.

    The function computes the projection matrix given the center and angles per axis.

    Args:
        center: center of the rotation (x,y,z) in the source with shape :math:`(B, 3)`.
        angles: axis angle vector containing the rotation angles in degrees in the form
            of (rx, ry, rz) with shape :math:`(B, 3)`. Internally it calls Rodrigues to compute
            the rotation matrix from axis-angle.
        scales: scale factor for x-y-z-directions with shape :math:`(B, 3)`.

    Returns:
        the projection matrix of 3D rotation with shape :math:`(B, 3, 4)`.

    .. note::
        This function is often used in conjunction with :func:`warp_affine3d`.

    """
    if not (len(center.shape) == 2 and center.shape[-1] == 3):
        raise AssertionError(center.shape)
    if not (len(angles.shape) == 2 and angles.shape[-1] == 3):
        raise AssertionError(angles.shape)
    if center.device != angles.device:
        raise AssertionError(center.device, angles.device)
    if center.dtype != angles.dtype:
        raise AssertionError(center.dtype, angles.dtype)

    # create rotation matrix
    axis_angle_rad: Tensor = deg2rad(angles)
    rmat: Tensor = axis_angle_to_rotation_matrix(axis_angle_rad)  # Bx3x3
    scaling_matrix: Tensor = eye_like(3, rmat)
    scaling_matrix = scaling_matrix * scales.unsqueeze(dim=1)
    rmat = rmat @ scaling_matrix.to(rmat)

    # define matrix to move forth and back to origin
    from_origin_mat = eye_like(4, rmat, shared_memory=False)  # Bx4x4
    from_origin_mat[..., :3, -1] += center

    to_origin_mat = from_origin_mat.clone()
    to_origin_mat = _torch_inverse_cast(from_origin_mat)

    # append translation with zeros
    proj_mat = projection_from_Rt(rmat, torch.zeros_like(center)[..., None])  # Bx3x4

    # chain 4x4 transforms
    proj_mat = convert_affinematrix_to_homography3d(proj_mat)  # Bx4x4
    proj_mat = from_origin_mat @ proj_mat @ to_origin_mat

    return proj_mat[..., :3, :]  # Bx3x4
Calculate the projection matrix for a 3D rotation.

    .. warning::
        This API signature it is experimental and might suffer some changes in the future.

    The function computes the projection matrix given the center and angles per axis.

    Args:
        center: center of the rotation (x,y,z) in the source with shape :math:`(B, 3)`.
        angles: axis angle vector containing the rotation angles in degrees in the form
            of (rx, ry, rz) with shape :math:`(B, 3)`. Internally it calls Rodrigues to compute
            the rotation matrix from axis-angle.
        scales: scale factor for x-y-z-directions with shape :math:`(B, 3)`.

    Returns:
        the projection matrix of 3D rotation with shape :math:`(B, 3, 4)`.

    .. note::
        This function is often used in conjunction with :func:`warp_affine3d`.

    
kornia/geometry/transform/imgwarp.py