Extract EGM2008CorrectionManager.

Part of #882.
2021-07-11 17:20:48 +02:00
parent e18d6b942d
commit f9d3108cb2
3 changed files with 45 additions and 45 deletions
@@ -0,0 +1,35 @@
+package de.dennisguse.opentracks.services.handlers;
+
+import android.content.Context;
+import android.util.Log;
+
+import java.io.IOException;
+
+import de.dennisguse.opentracks.content.data.Altitude;
+import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.util.EGM2008Utils;
+
+public class EGM2008CorrectionManager {
+
+    private static final String TAG = EGM2008CorrectionManager.class.getSimpleName();
+
+    private EGM2008Utils.EGM2008Correction egm2008Correction;
+
+    public void correctAltitude(Context context, TrackPoint trackPoint) {
+        if (!trackPoint.hasLocation() || !trackPoint.hasAltitude()) {
+            Log.d(TAG, "No altitude correction necessary.");
+            return;
+        }
+
+        if (egm2008Correction == null || !egm2008Correction.canCorrect(trackPoint.getLocation())) {
+            try {
+                egm2008Correction = EGM2008Utils.createCorrection(context, trackPoint.getLocation());
+            } catch (IOException e) {
+                Log.e(TAG, "Could not load altitude correction for " + trackPoint, e);
+                return;
+            }
+        }
+
+        trackPoint.setAltitude(Altitude.EGM2008.of(egm2008Correction.correctAltitude(trackPoint.getLocation())));
+    }
+}