Merge e79853a into 2db28ca

orbit_predictor/groundtrack.py

@@ -0,0 +1,24 @@
+class BaseElevationAPI:
+    def get_elevation(self, *, longitude, latitude):
+        raise NotImplementedError
+
+    def get_ground_point(self, position):
+        latitude, longitude, _ = position.position_llh
+        return (
+            longitude,
+            latitude,
+            self.get_elevation(longitude=longitude, latitude=latitude),
+        )
+
+    def get_groundtrack(self, positions):
+        return [self.get_ground_point(position) for position in positions]
+
+
+class ZeroElevation(BaseElevationAPI):
+    def get_elevation(self, *, longitude, latitude):
+        return 0.0
+
+
+def compute_groundtrack(predictor, times, elevation_api=ZeroElevation()):
+    positions = [predictor.get_position(time) for time in times]
+    return elevation_api.get_groundtrack(positions)