1 files changed, 64 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLGeometry_Private.h b/platform/darwin/src/MGLGeometry_Private.h
new file mode 100644
index 0000000000..72123827df
--- /dev/null
+++ b/platform/darwin/src/MGLGeometry_Private.h
@@ -0,0 +1,64 @@
+#import "MGLGeometry.h"
+
+#import <TargetConditionals.h>
+#if TARGET_OS_IPHONE
+    #import <UIKit/UIKit.h>
+#endif
+
+#import <mbgl/map/map.hpp>
+#import <mbgl/util/geo.hpp>
+
+/// Returns the smallest rectangle that contains both the given rectangle and
+/// the given point.
+CGRect MGLExtendRect(CGRect rect, CGPoint point);
+
+NS_INLINE mbgl::LatLng MGLLatLngFromLocationCoordinate2D(CLLocationCoordinate2D coordinate) {
+    return mbgl::LatLng(coordinate.latitude, coordinate.longitude);
+}
+
+NS_INLINE CLLocationCoordinate2D MGLLocationCoordinate2DFromLatLng(mbgl::LatLng latLng) {
+    return CLLocationCoordinate2DMake(latLng.latitude, latLng.longitude);
+}
+
+NS_INLINE MGLCoordinateBounds MGLCoordinateBoundsFromLatLngBounds(mbgl::LatLngBounds latLngBounds) {
+    return MGLCoordinateBoundsMake(MGLLocationCoordinate2DFromLatLng(latLngBounds.southwest()),
+                                   MGLLocationCoordinate2DFromLatLng(latLngBounds.northeast()));
+}
+
+NS_INLINE mbgl::LatLngBounds MGLLatLngBoundsFromCoordinateBounds(MGLCoordinateBounds coordinateBounds) {
+    return mbgl::LatLngBounds::hull(MGLLatLngFromLocationCoordinate2D(coordinateBounds.sw),
+                                    MGLLatLngFromLocationCoordinate2D(coordinateBounds.ne));
+}
+
+NS_INLINE BOOL MGLCoordinateInCoordinateBounds(CLLocationCoordinate2D coordinate, MGLCoordinateBounds coordinateBounds) {
+    mbgl::LatLngBounds bounds = MGLLatLngBoundsFromCoordinateBounds(coordinateBounds);
+    return bounds.contains(MGLLatLngFromLocationCoordinate2D(coordinate));
+}
+
+#if TARGET_OS_IPHONE
+NS_INLINE mbgl::EdgeInsets MGLEdgeInsetsFromNSEdgeInsets(UIEdgeInsets insets) {
+    return { insets.top, insets.left, insets.bottom, insets.right };
+}
+#else
+NS_INLINE mbgl::EdgeInsets MGLEdgeInsetsFromNSEdgeInsets(NSEdgeInsets insets) {
+    return { insets.top, insets.left, insets.bottom, insets.right };
+}
+#endif
+
+/** Converts a map zoom level to a camera altitude.
+    
+    @param zoomLevel The zoom level to convert.
+    @param pitch The camera pitch, measured in degrees.
+    @param latitude The latitude of the point at the center of the viewport.
+    @param size The size of the viewport.
+    @return An altitude measured in meters. */
+CLLocationDistance MGLAltitudeForZoomLevel(double zoomLevel, CGFloat pitch, CLLocationDegrees latitude, CGSize size);
+
+/** Converts a camera altitude to a map zoom level.
+    
+    @param altitude The altitude to convert, measured in meters.
+    @param pitch The camera pitch, measured in degrees.
+    @param latitude The latitude of the point at the center of the viewport.
+    @param size The size of the viewport.
+    @return A zero-based zoom level. */
+double MGLZoomLevelForAltitude(CLLocationDistance altitude, CGFloat pitch, CLLocationDegrees latitude, CGSize size);