SpECTRE Documentation Coverage Report
Current view: top level - PointwiseFunctions/ConstraintDamping - GaussianPlusConstant.hpp Coverage Total Hit
Commit: 0d1d717af84a81fb1284a20c4013708fe85cc2f0 Lines: 2.9 % 35 1
Test Date: 2026-10-22 17:29:42
Legend: Lines:     hit not hit

            Line data    Source code
       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include <array>
       7              : #include <cstddef>
       8              : #include <limits>
       9              : #include <memory>
      10              : #include <string>
      11              : #include <unordered_map>
      12              : 
      13              : #include "DataStructures/Tensor/TypeAliases.hpp"
      14              : #include "Options/String.hpp"
      15              : #include "PointwiseFunctions/ConstraintDamping/DampingFunction.hpp"
      16              : #include "Utilities/Serialization/CharmPupable.hpp"
      17              : #include "Utilities/TMPL.hpp"
      18              : 
      19              : /// \cond
      20              : class DataVector;
      21              : namespace PUP {
      22              : class er;
      23              : }  // namespace PUP
      24              : namespace domain::FunctionsOfTime {
      25              : class FunctionOfTime;
      26              : }  // namespace domain::FunctionsOfTime
      27              : /// \endcond
      28              : 
      29              : namespace ConstraintDamping {
      30              : /*!
      31              :  * \brief A Gaussian plus a constant: \f$f = C + A
      32              :  * \exp\left(-\frac{(x-x_0)^2}{w^2}\right)\f$
      33              :  *
      34              :  * \details Input file options are: `Constant` \f$C\f$, `Amplitude` \f$A\f$,
      35              :  * `Width` \f$w\f$, and `Center`\f$x_0\f$. The function takes input coordinates
      36              :  * of type `tnsr::I<T, VolumeDim, Fr>`, where `T` is e.g. `double` or
      37              :  * `DataVector`, `Fr` is a frame (e.g. `Frame::Inertial`), and `VolumeDim` is
      38              :  * the dimension of the spatial volume.
      39              :  */
      40              : template <size_t VolumeDim, typename Fr>
      41            1 : class GaussianPlusConstant : public DampingFunction<VolumeDim, Fr> {
      42              :  public:
      43            0 :   struct Constant {
      44            0 :     using type = double;
      45            0 :     static constexpr Options::String help = {"The constant."};
      46              :   };
      47              : 
      48            0 :   struct Amplitude {
      49            0 :     using type = double;
      50            0 :     static constexpr Options::String help = {"The amplitude of the Gaussian."};
      51              :   };
      52              : 
      53            0 :   struct Width {
      54            0 :     using type = double;
      55            0 :     static constexpr Options::String help = {"The width of the Gaussian."};
      56            0 :     static type lower_bound() { return 0.; }
      57              :   };
      58              : 
      59            0 :   struct Center {
      60            0 :     using type = std::array<double, VolumeDim>;
      61            0 :     static constexpr Options::String help = {"The center of the Gaussian."};
      62              :   };
      63            0 :   using options = tmpl::list<Constant, Amplitude, Width, Center>;
      64              : 
      65            0 :   static constexpr Options::String help = {
      66              :       "Computes a Gaussian plus a constant about an arbitrary coordinate "
      67              :       "center with given width and amplitude"};
      68              : 
      69              :   /// \cond
      70              :   WRAPPED_PUPable_decl_base_template(SINGLE_ARG(DampingFunction<VolumeDim, Fr>),
      71              :                                      GaussianPlusConstant);  // NOLINT
      72              : 
      73              :   explicit GaussianPlusConstant(CkMigrateMessage* msg);
      74              :   /// \endcond
      75              : 
      76            0 :   GaussianPlusConstant(double constant, double amplitude, double width,
      77              :                        const std::array<double, VolumeDim>& center);
      78              : 
      79            0 :   GaussianPlusConstant() = default;
      80            0 :   ~GaussianPlusConstant() override = default;
      81            0 :   GaussianPlusConstant(const GaussianPlusConstant& /*rhs*/) = default;
      82            0 :   GaussianPlusConstant& operator=(const GaussianPlusConstant& /*rhs*/) =
      83              :       default;
      84            0 :   GaussianPlusConstant(GaussianPlusConstant&& /*rhs*/) = default;
      85            0 :   GaussianPlusConstant& operator=(GaussianPlusConstant&& /*rhs*/) = default;
      86              : 
      87            0 :   void operator()(
      88              :       gsl::not_null<Scalar<double>*> value_at_x,
      89              :       const tnsr::I<double, VolumeDim, Fr>& x, double time,
      90              :       const std::unordered_map<
      91              :           std::string,
      92              :           std::unique_ptr<::domain::FunctionsOfTime::FunctionOfTime>>&
      93              :           functions_of_time) const override;
      94            0 :   void operator()(
      95              :       gsl::not_null<Scalar<DataVector>*> value_at_x,
      96              :       const tnsr::I<DataVector, VolumeDim, Fr>& x, double time,
      97              :       const std::unordered_map<
      98              :           std::string,
      99              :           std::unique_ptr<::domain::FunctionsOfTime::FunctionOfTime>>&
     100              :           functions_of_time) const override;
     101              : 
     102            0 :   auto get_clone() const
     103              :       -> std::unique_ptr<DampingFunction<VolumeDim, Fr>> override;
     104              : 
     105              :   // NOLINTNEXTLINE(google-runtime-references)
     106            0 :   void pup(PUP::er& p) override;
     107              : 
     108              :  private:
     109            0 :   friend bool operator==(const GaussianPlusConstant& lhs,
     110              :                          const GaussianPlusConstant& rhs) {
     111              :     return lhs.constant_ == rhs.constant_ and
     112              :            lhs.amplitude_ == rhs.amplitude_ and
     113              :            lhs.inverse_width_ == rhs.inverse_width_ and
     114              :            lhs.center_ == rhs.center_;
     115              :   }
     116              : 
     117            0 :   double constant_ = std::numeric_limits<double>::signaling_NaN();
     118            0 :   double amplitude_ = std::numeric_limits<double>::signaling_NaN();
     119            0 :   double inverse_width_ = std::numeric_limits<double>::signaling_NaN();
     120            0 :   std::array<double, VolumeDim> center_{};
     121              : 
     122              :   template <typename T>
     123            0 :   void apply_call_operator(gsl::not_null<Scalar<T>*> value_at_x,
     124              :                            const tnsr::I<T, VolumeDim, Fr>& x) const;
     125              : };
     126              : 
     127              : template <size_t VolumeDim, typename Fr>
     128            0 : bool operator!=(const GaussianPlusConstant<VolumeDim, Fr>& lhs,
     129              :                 const GaussianPlusConstant<VolumeDim, Fr>& rhs) {
     130              :   return not(lhs == rhs);
     131              : }
     132              : }  // namespace ConstraintDamping
     133              : 
     134              : /// \cond
     135              : template <size_t VolumeDim, typename Fr>
     136              : PUP::able::PUP_ID
     137              : // NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
     138              :     ConstraintDamping::GaussianPlusConstant<VolumeDim, Fr>::my_PUP_ID =
     139              :         0;  // NOLINT
     140              : /// \endcond
        

Generated by: LCOV version 2.0-1