...

cxx/mount.h

@@ -10,6 +10,7 @@
 #include <string_view>
 #include "spdlog/sinks/null_sink.h"
 
+#include "mount_astrom.h"
 
 // low-level functions
 namespace lowlevel
@@ -35,6 +36,60 @@ concept mcc_mount_state_c = requires(T t, const T t_const) {
 };
 
 
+class MccMountPosition
+{
+public:
+    typedef double mnt_coord_t;
+    typedef double mnt_speed_t;
+    typedef double time_point_t;
+
+    // time-related
+    std::chrono::system_clock::time_point utc;
+    time_point_t mjd;  // modified Julian date
+    time_point_t ut1;
+    time_point_t tt;
+    time_point_t siderTime;  // sideral time (in radians)
+
+    // apparent target (user-input) current coordinates (in radians)
+    mnt_coord_t tagRA, tagDEC;
+    mnt_coord_t tagHA;
+    mnt_coord_t tagAZ, tagZD;
+
+    // encoder-measured current mount coordinates (in radians)
+    mnt_coord_t mntRA, mntDEC;
+    mnt_coord_t mntHA;
+    mnt_coord_t mntAZ, mntZD;
+
+    // encoder-measured current mount moving speed (in radians/s)
+    mnt_speed_t mntSpeedX,
+        mntSpeedY;  // X - HA, Y - DEC for equatorial-type mount; X - AZ, Y - ZD for horizontal-type one
+
+    // current refraction coefficient
+    mnt_coord_t currRefr;
+
+    // PCS (pointing correction system) corrections
+    mnt_coord_t pcsX, pcsY;  // X - HA, Y - DEC for equatorial-type mount; X - AZ, Y - ZD for horizontal-type one
+
+    bool update(const std::chrono::system_clock::time_point& utc_time)
+    {
+        //
+
+        astro::mcc_julday(utc_time, mjd);
+
+        return true;
+    }
+
+protected:
+    bool updateTime(const std::chrono::system_clock::time_point& utc_time)
+    {
+        // UTC to TAI
+        double tai;
+
+        return true;
+    }
+};
+
+
 
 // implements a Finite State Machine Pattern
 template <MccMountType MOUNT_TYPE>