1 files changed, 32 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLGeometry.h b/platform/darwin/src/MGLGeometry.h
index 7c68033abf..a8d3759106 100644
--- a/platform/darwin/src/MGLGeometry.h
+++ b/platform/darwin/src/MGLGeometry.h
@@ -14,6 +14,24 @@ typedef struct __attribute__((objc_boxable)) MGLCoordinateSpan {
     CLLocationDegrees longitudeDelta;
 } MGLCoordinateSpan;
 
+/* Defines a point on the map in Mercator projection for a specific zoom level. */
+typedef struct __attribute__((objc_boxable)) MGLMapPoint {
+    /** X coordinate representing a longitude in Mercator projection. */
+    CGFloat x;
+    /** Y coordinate representing  a latitide in Mercator projection. */
+    CGFloat y;
+    /** Zoom level at which the X and Y coordinates are valid. */
+    CGFloat zoomLevel;
+} MGLMapPoint;
+
+/* Defines a 4x4 matrix. */
+typedef struct MGLMatrix4 {
+    double m00, m01, m02, m03;
+    double m10, m11, m12, m13;
+    double m20, m21, m22, m23;
+    double m30, m31, m32, m33;
+} MGLMatrix4;
+
 /**
  Creates a new `MGLCoordinateSpan` from the given latitudinal and longitudinal
  deltas.
@@ -26,6 +44,17 @@ NS_INLINE MGLCoordinateSpan MGLCoordinateSpanMake(CLLocationDegrees latitudeDelt
 }
 
 /**
+ Creates a new `MGLMapPoint` from the given X and Y coordinates, and zoom level.
+ */
+NS_INLINE MGLMapPoint MGLMapPointMake(CGFloat x, CGFloat y, CGFloat zoomLevel) {
+    MGLMapPoint point;
+    point.x = x;
+    point.y = y;
+    point.zoomLevel = zoomLevel;
+    return point;
+}
+
+/**
  Returns `YES` if the two coordinate spans represent the same latitudinal change
  and the same longitudinal change.
  */
@@ -181,4 +210,7 @@ NS_INLINE CLLocationDegrees MGLDegreesFromRadians(CGFloat radians) {
     return radians * 180 / M_PI;
 }
 
+/** Returns Mercator projection of a WGS84 coordinate at the specified zoom level. */
+extern MGL_EXPORT MGLMapPoint MGLMapPointForCoordinate(CLLocationCoordinate2D coordinate, double zoomLevel);
+
 NS_ASSUME_NONNULL_END