.. _program_listing_file_environment_forces.h:

Program Listing for File forces.h
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_environment_forces.h>` (``environment/forces.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   
   #pragma once
   
   // C++ includes
   #include <string>
   #include <vector>
   
   // lupnt includes
   #include "lupnt/core/constants.h"
   #include "lupnt/core/file.h"
   #include "lupnt/environment/body.h"
   #include "lupnt/numerics/math_utils.h"
   
   template <typename T> using Vector3 = Eigen::Vector3<T>;
   template <typename T> using Matrix3 = Eigen::Matrix<T, 3, 3>;
   template <typename T> using MatrixX = Eigen::Matrix<T, Eigen::Dynamic, Eigen::Dynamic>;
   
   namespace lupnt {
   
     template <typename T> Vector3<T> AccelarationGravityField(const Vector3<T>& r, T GM, T R_ref,
                                                               const MatrixX<T>& CS, int n_max,
                                                               int m_max);
   
     Vec3 AccelerationPointMass(const Vec3& r, const Vec3& s, Real GM);
   
     Vec3 AccelerationSolarRadiation(const Vec3& r, const Vec3& r_sun, Real bcoeff_srp, Real P0,
                                     Real AU);
   
     Vec3 AccelerationRelativisticCorrection(const Vec3& r, const Vec3& v, Real GM, Real c_light = C);
   
     Vec3 AccelerationDrag(Real mjd_tt, const Vec6& rv, const Mat3& T, Real bcoeff_drag);
   
     Real ShadowFunction(const Vec3& r, const Vec3& r_sun, Real R_body, Real R_sun = R_SUN);
   
     Real Illumination(const Vec3& r, const Vec3& r_sun, Real R_body);
   
     Real DensityHarrisPriester(Real mjd_tt, const Vec3& r_tod);
   
     Vec3 AccelerationEarthSpacecraft(Real mjd_tt, const Vec6& rv, Real bcoeff_srp, Real bcoeff_drag,
                                      GravityField<Real> grav);
   
   }  // namespace lupnt