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Fix magnetic declination

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This commit is contained in:
Victor Shcherb 2012-12-31 02:16:37 +03:00
parent 962ad3096c
commit 6873cb53a1
1 changed files with 12 additions and 0 deletions
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12
OsmAnd/src/net/osmand/plus/activities/MapActivity.java
View file

@ -50,6 +50,7 @@ import android.content.DialogInterface.OnDismissListener;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.hardware.GeomagneticField;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
@ -120,6 +121,7 @@ public class MapActivity extends AccessibleActivity implements IMapLocationListe
private boolean sensorRegistered = false;
private float previousSensorValue = 0;
private float previousCorrectionValue = 360;
private boolean quitRouteRestoreDialog = false;
// Notification status
@ -1292,6 +1294,16 @@ public class MapActivity extends AccessibleActivity implements IMapLocationListe
if(currentScreenOrientation == 1){
val += 90;
}
Location l = getLastKnownLocation();
if(l != null && previousCorrectionValue == 360) {
GeomagneticField gf = new GeomagneticField((float)l.getLatitude(), (float)l.getLongitude(),
(float)l.getAltitude(), System.currentTimeMillis());
previousCorrectionValue = gf.getDeclination();
}
if(previousCorrectionValue != 360 ){
val += previousCorrectionValue;
}
previousSensorValue = val;
if (settings.ROTATE_MAP.get() == OsmandSettings.ROTATE_MAP_COMPASS) {
if(Math.abs(MapUtils.degreesDiff(mapView.getRotate(), -val)) > 15) {