Transformable.h

// Copyright 2024, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#pragma once
 
#include "neml2/misc/types.h"
 
namespace neml2
{
class R2;
class Quaternion;
class Rot;
class Vec;
 
template <class Derived>
class Transformable
{
public:
  Transformable() = default;
 
  Transformable(const Transformable &) = default;
  Transformable(Transformable &&) noexcept = default;
  Transformable & operator=(const Transformable &) = default;
  Transformable & operator=(Transformable &&) noexcept = default;
  virtual ~Transformable() = default;
 
  virtual Derived transform(const R2 & op) const = 0;
};
 
R2 transform_from_quaternion(const Quaternion & q);
 
R2 identity_transform(const torch::TensorOptions & options = default_tensor_options());
R2 proper_rotation_transform(const Rot & rot);
R2 improper_rotation_transform(const Rot & rot);
R2 reflection_transform(const Vec & v);
R2 inversion_transform(const torch::TensorOptions & options = default_tensor_options());
} // namespace neml2