...

cxx/mount.h

@@ -36,6 +36,18 @@ concept mcc_mount_state_c = requires(T t, const T t_const) {
 };
 
 
+// meteo parameters (to compute refraction)
+struct MccMountMeteo {
+    typedef double temp_t;   // Temperature in C
+    typedef double humid_t;  // humidity in %
+    typedef double press_t;  // atmospheric presure in hPa=mB
+
+    temp_t temperature;
+    humid_t humidity;
+    press_t pressure;
+};
+
+// mount current position and related quantities
 class MccMountPosition
 {
 public:
@@ -166,6 +178,13 @@ public:
         return _currentMountOrient.load();
     }
 
+
+
+    void setMeteo(std::derived_from<MccMountMeteo> auto const& meteo)
+    {
+        _currentMeteo.store(meteo);
+    }
+
 protected:
     mount_config_t _mountCurrentConfig;
 
@@ -174,6 +193,8 @@ protected:
 
     std::atomic<mount_orient_t> _currentMountOrient;
 
+    std::atomic<MccMountMeteo> _currentMeteo;
+
     void updateMountState()
     {
         mount_orient_t orient;