Line data    Source code

       1              : // Copyright 2024, UChicago Argonne, LLC
       2              : // All Rights Reserved
       3              : // Software Name: NEML2 -- the New Engineering material Model Library, version 2
       4              : // By: Argonne National Laboratory
       5              : // OPEN SOURCE LICENSE (MIT)
       6              : //
       7              : // Permission is hereby granted, free of charge, to any person obtaining a copy
       8              : // of this software and associated documentation files (the "Software"), to deal
       9              : // in the Software without restriction, including without limitation the rights
      10              : // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      11              : // copies of the Software, and to permit persons to whom the Software is
      12              : // furnished to do so, subject to the following conditions:
      13              : //
      14              : // The above copyright notice and this permission notice shall be included in
      15              : // all copies or substantial portions of the Software.
      16              : //
      17              : // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      18              : // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      19              : // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      20              : // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      21              : // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      22              : // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      23              : // THE SOFTWARE.
      24              : 
      25              : #include "neml2/tensors/Transformable.h"
      26              : 
      27              : #include "neml2/tensors/tensors.h"
      28              : 
      29              : namespace neml2
      30              : {
      31              : 
      32              : R2
      33           76 : transform_from_quaternion(const Quaternion & q)
      34              : {
      35           76 :   return q.to_R2();
      36              : }
      37              : 
      38              : R2
      39            2 : identity_transform(const TensorOptions & options)
      40              : {
      41            2 :   return R2::identity(options);
      42              : }
      43              : 
      44              : R2
      45            2 : proper_rotation_transform(const Rot & rot)
      46              : {
      47            2 :   return rot.euler_rodrigues();
      48              : }
      49              : 
      50              : R2
      51            3 : improper_rotation_transform(const Rot & rot)
      52              : {
      53            3 :   Vec v = rot / rot.norm();
      54            6 :   return rot.euler_rodrigues() * (R2::identity(rot.options()) - 2 * v.outer(v));
      55            3 : }
      56              : 
      57              : R2
      58            0 : reflection_transform(const Vec & v)
      59              : {
      60            0 :   return R2::identity(v.options()) - 2 * v.outer(v);
      61              : }
      62              : 
      63              : R2
      64            2 : inversion_transform(const TensorOptions & option)
      65              : {
      66            2 :   return R2::fill(-1.0, option);
      67              : }
      68              : 
      69              : } // namespace neml2