1 files changed, 15 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLTypes.h b/platform/darwin/src/MGLTypes.h
index 65cebbe5f4..8bc6f67fac 100644
--- a/platform/darwin/src/MGLTypes.h
+++ b/platform/darwin/src/MGLTypes.h
@@ -70,6 +70,21 @@ typedef NS_OPTIONS(NSUInteger, MGLMapDebugMaskOptions) {
 #endif
 };
 
+/**
+ A structure containing information about a transition values.
+ */
+typedef struct MGLTransition {
+    /**
+     The duration in seconds to animate any changes to the style URL or to layout and paint attributes.
+     */
+    NSTimeInterval duration;
+    
+    /**
+     The delay in seconds to before applying any changes to the style URL or to layout and paint attributes.
+     */
+    NSTimeInterval delay;
+} MGLTransition;
+
 NS_ASSUME_NONNULL_END
 
 #ifndef NS_ARRAY_OF