[ios] Fixed compass angle when device changes orientation to landscape

@TODO fix ShapeRenderer::approximateArc() to draw sector using north ("up" in screen coordinates)

iphone/Maps/Classes/MapViewController.mm

@@ -312,6 +312,7 @@ NSInteger compareAddress(id l, id r, void * context)
 
 - (void) didRotateFromInterfaceOrientation: (UIInterfaceOrientation) fromInterfaceOrientation
 {
+  [[MapsAppDelegate theApp].m_locationManager setOrientation:self.interfaceOrientation];
   [self Invalidate];
 }
 

iphone/Maps/Classes/SearchVC.mm

@@ -212,6 +212,11 @@ static void OnSearchResultCallback(search::Result const & res, int queryId)
   [super viewWillDisappear:animated];
 }
 
+- (void) didRotateFromInterfaceOrientation: (UIInterfaceOrientation) fromInterfaceOrientation
+{
+  [m_locationManager setOrientation:self.interfaceOrientation];
+}
+
 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
 {
   return YES;  // All orientations are supported.

iphone/Maps/Platform/LocationManager.h

@@ -1,5 +1,6 @@
 #import <Foundation/Foundation.h>
 #import <CoreLocation/CoreLocation.h>
+#import <UIKit/UIApplication.h>
 
 #include "../../platform/location.hpp"
 
@@ -21,4 +22,6 @@
 - (void)start:(id <LocationObserver>)observer;
 - (void)stop:(id <LocationObserver>)observer;
 - (CLLocation *)lastLocation;
+// Fixes compass angle orientation when rotating screen to landscape
+- (void)setOrientation:(UIInterfaceOrientation)orientation;
 @end

iphone/Maps/Platform/LocationManager.mm

@@ -137,4 +137,9 @@
   return YES;
 }
 
+- (void)setOrientation:(UIInterfaceOrientation)orientation
+{
+  m_locationManager.headingOrientation = (CLDeviceOrientation)orientation;
+}
+
 @end