Issue #191: Improve eclipse observation performance

Author: Mark2000

src/bsk_rl/utils/orbital.py

@@ -337,9 +337,13 @@ def _init_simulator(self) -> None:
         ].recorder()
         self.eclipse_log = self.eclipseObject.eclipseOutMsgs[0].recorder()
 
+        self._time_log = []
         self.AddModelToTask(simTaskName, self.sc_state_log)
+        self._r_BN_N_log = []
         self.AddModelToTask(simTaskName, self.planet_state_log)
+        self._J20002Pfix_log = []
         self.AddModelToTask(simTaskName, self.eclipse_log)
+        self._shadowFactor_log = []
 
         self.InitializeSimulation()
 
@@ -351,7 +355,7 @@ def sim_time(self) -> float:
     @property
     def times(self) -> np.ndarray:
         """Recorder times in seconds."""
-        return np.array([macros.NANO2SEC * t for t in self.sc_state_log.times()])
+        return macros.NANO2SEC * np.array(self._time_log)
 
     def extend_to(self, t: float) -> None:
         """Compute the trajectory of the satellite up to t.
@@ -363,12 +367,19 @@ def extend_to(self, t: float) -> None:
             return
         self.ConfigureStopTime(macros.sec2nano(t))
         self.ExecuteSimulation()
+        self._time_log.extend(self.sc_state_log.times())
+        self._r_BN_N_log.extend(self.sc_state_log.r_BN_N)
+        self._J20002Pfix_log.extend(self.planet_state_log.J20002Pfix)
+        self._shadowFactor_log.extend(self.eclipse_log.shadowFactor)
+        self.sc_state_log.clear()
+        self.planet_state_log.clear()
+        self.eclipse_log.clear()
 
     def _generate_eclipses(self, t: float) -> None:
         self.extend_to(t + self.dt)
         upcoming_times = self.times[self.times > self._eclipse_search_time]
         upcoming_eclipse = (
-            self.eclipse_log.shadowFactor[self.times > self._eclipse_search_time] > 0
+            np.array(self._shadowFactor_log)[self.times > self._eclipse_search_time] > 0
         ).astype(float)
         for i in np.where(np.diff(upcoming_eclipse) == -1)[0]:
             self._eclipse_starts.append(upcoming_times[i])
@@ -412,7 +423,7 @@ def r_BN_N(self) -> interp1d:
             self.extend_to(self.dt * 3)
         return interp1d(
             self.times,
-            self.sc_state_log.r_BN_N,
+            self._r_BN_N_log,
             kind="cubic",
             axis=0,
             fill_value="extrapolate",
@@ -427,9 +438,7 @@ def r_BP_P(self) -> interp1d:
             self.times,
             [
                 np.matmul(dcm, pos)
-                for dcm, pos in zip(
-                    self.planet_state_log.J20002Pfix, self.sc_state_log.r_BN_N
-                )
+                for dcm, pos in zip(self._J20002Pfix_log, self._r_BN_N_log)
             ],
             kind="cubic",
             axis=0,