[core, ios, osx] Tilt around visual center point

The tilt gesture on both iOS and OS X now respects the content insets. On iOS, in user tracking mode, it additionally respects the user dot’s position if it’s aligned to the top or bottom of the view.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mbgl/map/transform.hpp b/src/mbgl/map/transform.hpp
index bef6c6c87e..8c9ea08885 100644
--- a/src/mbgl/map/transform.hpp
+++ b/src/mbgl/map/transform.hpp
@@ -102,7 +102,15 @@ public:
     double getAngle() const;
 
     // Pitch
+    /** Sets the pitch angle.
+        @param angle The new pitch angle, measured in radians toward the
+            horizon. */
     void setPitch(double pitch, const Duration& = Duration::zero());
+    /** Sets the pitch angle, keeping the given point fixed within the view.
+        @param angle The new pitch angle, measured in radians toward the
+            horizon.
+        @param anchor A point relative to the top-left corner of the view. */
+    void setPitch(double pitch, const PrecisionPoint& anchor, const Duration& = Duration::zero());
     double getPitch() const;
 
     // North Orientation