mom_array_transform::rotate_vector subroutine subroutine mom_array_transform::rotate_vector::rotate_vector_real_2d (A_in, B_in, turns, A, B) rotate_vector_real_2d A_in A_in B_in B_in turns turns A A B B Rotate the elements of a 2d real vector along first and second axes. a_in First component of unrotated vector b_in Second component of unrotated vector turns Number of quarter turns a First component of rotated vector b Second component of unrotated vector subroutine subroutine mom_array_transform::rotate_vector::rotate_vector_real_3d (A_in, B_in, turns, A, B) rotate_vector_real_3d A_in A_in B_in B_in turns turns A A B B Rotate the elements of a 3d real vector along first and second axes. a_in First component of unrotated vector b_in Second component of unrotated vector turns Number of quarter turns a First component of rotated vector b Second component of unrotated vector subroutine subroutine mom_array_transform::rotate_vector::rotate_vector_real_4d (A_in, B_in, turns, A, B) rotate_vector_real_4d A_in A_in B_in B_in turns turns A A B B Rotate the elements of a 4d real vector along first and second axes. a_in First component of unrotated vector b_in Second component of unrotated vector turns Number of quarter turns a First component of rotated vector b Second component of unrotated vector Rotate an array pair representing the components of a vector. Rotation is applied across the first and second axes of the array. This rotation should be applied when the fields satisfy vector transformation rules. For example, the u and v components of a velocity will map from one to the other for quarter turns, with a sign change in one component. A half turn will map elements onto themselves with sign changes in both components. mom_array_transform::rotate_vectorrotate_vector_real_2d mom_array_transform::rotate_vectorrotate_vector_real_3d mom_array_transform::rotate_vectorrotate_vector_real_4d