[android] #5438 - add bearing to MyLocationView for the SDK camera object

[android] #5438 - integrate MyLocationView set bearing inside the MapView setBearing

[android] #5438 - invalidate the MapView instead of calling update from core.

[android] #5438 - add bearing MyLocationView to setBearing focal point on MapView

[android] #5438 - Get correct bearing when camera object is rotated around the z-axis, notify MyLocationView when camera position changes, update test utilities.

[android] #5438 - fixes compass tracking

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapView.java

@@ -641,6 +641,7 @@ public class MapView extends FrameLayout {
         if (mDestroyed) {
             return;
         }
+        mMyLocationView.setBearing(0);
         mNativeMapView.cancelTransitions();
         mNativeMapView.resetNorth();
     }
@@ -1349,20 +1350,13 @@ public class MapView extends FrameLayout {
         }
     }
 
-    // Used by UserLocationView
-    void update() {
-        if (mDestroyed) {
-            return;
-        }
-
-        mNativeMapView.update();
-    }
-
     CameraPosition invalidateCameraPosition() {
         if (mDestroyed) {
             return new CameraPosition.Builder().build();
         }
-        return new CameraPosition.Builder(mNativeMapView.getCameraValues()).build();
+        CameraPosition position = new CameraPosition.Builder(mNativeMapView.getCameraValues()).build();
+        mMyLocationView.setCameraPosition(position);
+        return position;
     }
 
     double getBearing() {
@@ -1386,6 +1380,7 @@ public class MapView extends FrameLayout {
         if (mDestroyed) {
             return;
         }
+        mMyLocationView.setBearing(bearing);
         mNativeMapView.setBearing(bearing);
     }
 
@@ -1393,6 +1388,7 @@ public class MapView extends FrameLayout {
         if (mDestroyed) {
             return;
         }
+        mMyLocationView.setBearing(bearing);
         mNativeMapView.setBearing(bearing, duration);
     }
 
@@ -1400,6 +1396,7 @@ public class MapView extends FrameLayout {
         if (mDestroyed) {
             return;
         }
+        mMyLocationView.setBearing(bearing);
         mNativeMapView.setBearing(bearing, focalX, focalY);
     }
 

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java

@@ -1629,7 +1629,7 @@ public class MapboxMap {
      * Triggers an invalidation of the map view.
      */
     public void invalidate() {
-        mMapView.update();
+        mMapView.invalidate();
     }
 
     /**

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java

@@ -91,6 +91,9 @@ public class MyLocationView extends View {
     private Matrix matrix;
     private Camera camera;
     private PointF screenLocation;
+
+    // camera vars
+    private float bearing;
     private float tilt;
 
     @MyLocationTracking.Mode
@@ -260,7 +263,7 @@ public class MyLocationView extends View {
 
         // apply tilt to camera
         camera.save();
-        camera.rotate(tilt, 0, 0);
+        camera.rotate(tilt, 0, bearing);
 
         // map camera matrix on our matrix
         camera.getMatrix(matrix);
@@ -301,6 +304,15 @@ public class MyLocationView extends View {
         this.tilt = (float) tilt;
     }
 
+    public void setBearing(double bearing) {
+        this.bearing = (float) bearing;
+    }
+
+    public void setCameraPosition(CameraPosition position) {
+        setTilt(position.tilt);
+        setBearing(position.bearing);
+    }
+
     public void onPause() {
         compassListener.onPause();
         toggleGps(false);
@@ -404,7 +416,7 @@ public class MyLocationView extends View {
             compassListener.onPause();
             if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
                 // always face north
-                gpsDirection = 0;
+                gpsDirection = bearing;
                 setCompass(gpsDirection);
             }
         }
@@ -546,7 +558,7 @@ public class MyLocationView extends View {
 
             SensorManager.getRotationMatrix(mR, mI, mGData, mMData);
             SensorManager.getOrientation(mR, mOrientation);
-            setCompass((int) (mOrientation[0] * 180.0f / Math.PI));
+            setCompass(mCurrentDegree = (int) (mOrientation[0] * 180.0f / Math.PI));
             mCompassUpdateNextTimestamp = currentTime + UPDATE_RATE_MS;
         }
 
@@ -662,7 +674,7 @@ public class MyLocationView extends View {
                 if (location.hasBearing()) {
                     builder.bearing(location.getBearing());
                 }
-                gpsDirection = 0;
+                gpsDirection = location.getBearing();
                 setCompass(gpsDirection);
             } else if (myBearingTrackingMode == MyBearingTracking.COMPASS) {
                 if (!compassListener.isPaused()) {
@@ -703,8 +715,8 @@ public class MyLocationView extends View {
             latLng = new LatLng(location);
 
             // update LatLng direction
-            if (location.hasBearing()) {
-                gpsDirection = clamp(location.getBearing() - (float) mapboxMap.getCameraPosition().bearing);
+            if (myBearingTrackingMode == MyBearingTracking.GPS && location.hasBearing()) {
+                gpsDirection = location.getBearing();
                 setCompass(gpsDirection);
             }
 
@@ -736,17 +748,6 @@ public class MyLocationView extends View {
             latLng = interpolatedLocation;
         }
 
-        private float clamp(float direction) {
-            float diff = previousDirection - direction;
-            if (diff > 180.0f) {
-                direction += 360.0f;
-            } else if (diff < -180.0f) {
-                direction -= 360.f;
-            }
-            previousDirection = direction;
-            return direction;
-        }
-
         @Override
         void invalidate() {
             screenLocation = projection.toScreenLocation(latLng);