2 files changed, 18 insertions, 0 deletions
diff --git a/include/mbgl/util/constants.hpp b/include/mbgl/util/constants.hpp
index 069e6e41ae..9e0856b68a 100644
--- a/include/mbgl/util/constants.hpp
+++ b/include/mbgl/util/constants.hpp
@@ -2,6 +2,7 @@
 #define MBGL_UTIL_CONSTANTS
 
 #include <cmath>
+#include <string>
 
 namespace mbgl {
 
@@ -15,6 +16,8 @@ extern const double M2PI;
 extern const double EARTH_RADIUS_M;
 extern const double LATITUDE_MAX;
 
+extern const std::string ANNOTATIONS_POINTS_LAYER_ID;
+
 }
 
 namespace debug {
diff --git a/include/mbgl/util/geo.hpp b/include/mbgl/util/geo.hpp
index 1d9986bd91..b99a6e6614 100644
--- a/include/mbgl/util/geo.hpp
+++ b/include/mbgl/util/geo.hpp
@@ -19,6 +19,21 @@ struct ProjectedMeters {
         : northing(n), easting(e) {}
 };
 
+struct LatLngBounds {
+    LatLng sw = {90, 180};
+    LatLng ne = {-90, -180};
+
+    inline LatLngBounds(LatLng sw_ = {90, 180}, LatLng ne_ = {-90, -180})
+        : sw(sw_), ne(ne_) {}
+
+    inline void extend(const LatLng& point) {
+        if (point.latitude < sw.latitude) sw.latitude = point.latitude;
+        if (point.latitude > ne.latitude) ne.latitude = point.latitude;
+        if (point.longitude < sw.longitude) sw.longitude = point.longitude;
+        if (point.longitude > ne.longitude) ne.longitude = point.longitude;
+    }
+};
+
 }
 
 #endif