added and tested Exponential Refractive Index class in media

(cherry picked from commit be05f435)

corsika/detail/media/ExponentialRefractiveIndex.inl

-/*
- * (c) Copyright 2020 CORSIKA Project, corsika-project@lists.kit.edu
- *
- * This software is distributed under the terms of the GNU General Public
- * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
- * the license.
- */
-
-#pragma once
-
-#include <bits/stdc++.h>
-#include <corsika/media/IRefractiveIndexModel.hpp>
-
-namespace corsika {
-
-  template <typename T>
-  template <typename... Args>
-  ExponentialRefractiveIndex<T>::ExponentialRefractiveIndex(double const n0,
-                             InverseLengthType const lambda, Args&&... args)
-      : T(std::forward<Args>(args)...)
-      , n_0(n0)
-      , lambda_(lambda) {}
-
-  template <typename T>
-  double ExponentialRefractiveIndex<T>::getRefractiveIndex(Point const& point) const {
-  //TODO: THIS METHOD CURRENTLY ONLY USES THE Z-COORDINATE.
-  //NEED TO THINK IT FOR FUTURE WORK ON ARBITRARY GEOMETRIES.
-  return n_0 * exp((-lambda_) * point.getCoordinates().getZ());
-  }
-
-} // namespace corsika
+///*
+// * (c) Copyright 2020 CORSIKA Project, corsika-project@lists.kit.edu
+// *
+// * This software is distributed under the terms of the GNU General Public
+// * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+// * the license.
+// */
+//
+//#pragma once
+//
+//#include <bits/stdc++.h>
+//#include <corsika/media/IRefractiveIndexModel.hpp>
+//
+//namespace corsika {
+//
+//  template <typename T>
+//  template <typename... Args>
+//  ExponentialRefractiveIndex<T>::ExponentialRefractiveIndex(double const n0,
+//                             InverseLengthType const lambda, Args&&... args)
+//      : T(std::forward<Args>(args)...)
+//      , n_0(n0)
+//      , lambda_(lambda) {}
+//
+//  template <typename T>
+//  double ExponentialRefractiveIndex<T>::getRefractiveIndex(Point const& point) const {
+//  //TODO: THIS METHOD CURRENTLY ONLY USES THE Z-COORDINATE.
+//  //NEED TO THINK IT FOR FUTURE WORK ON ARBITRARY GEOMETRIES.
+//  return n_0 * exp((-lambda_) * point.getCoordinates().getZ());
+//  }
+//
+//} // namespace corsika

corsika/media/ExponentialRefractiveIndex.hpp

@@ -38,18 +38,23 @@ namespace corsika {
      */
     template <typename... Args>
     ExponentialRefractiveIndex(double const n0,
-                               InverseLengthType const lambda, Args&&... args);
-
+                               InverseLengthType const lambda, Args&&... args)
+        : T(std::forward<Args>(args)...)
+        , n_0(n0)
+        , lambda_(lambda) {}
     /**
      * Evaluate the refractive index at a given location.
      *
      * @param  point    The location to evaluate at.
      * @returns    The refractive index at this point.
      */
-    double getRefractiveIndex(Point const& point) const final override;
+    double getRefractiveIndex(Point const& point) const final override
+    {
+      //TODO: THIS METHOD CURRENTLY ONLY USES THE Z-COORDINATE.
+      //NEED TO THINK IT FOR FUTURE WORK ON ARBITRARY GEOMETRIES.
+      return n_0 * exp((-lambda_) * point.getCoordinates().getZ());
+    }
 
   }; // END: class ExponentialRefractiveIndex
 
-} // namespace corsika
-
+} // namespace corsika
\ No newline at end of file
-#include <corsika/detail/media/ExponentialRefractiveIndex.inl>