1 files changed, 35 insertions, 0 deletions
diff --git a/platform/darwin/src/MGLDistanceFormatter.m b/platform/darwin/src/MGLDistanceFormatter.m
new file mode 100644
index 0000000000..e77e48b512
--- /dev/null
+++ b/platform/darwin/src/MGLDistanceFormatter.m
@@ -0,0 +1,35 @@
+#import "MGLDistanceFormatter.h"
+
+@interface MGLDistanceFormatter()
+@end
+
+@implementation MGLDistanceFormatter
+
+static const CLLocationDistance METERS_PER_MILE = 1609.344;
+static const double YARDS_PER_MILE = 1760.0;
+static const double FEET_PER_MILE = YARDS_PER_MILE * 3.0;
+
+- (NSString *)stringFromDistance:(CLLocationDistance)distance {
+    double miles = distance / METERS_PER_MILE;
+    double feet = miles * FEET_PER_MILE;
+    
+    NSLengthFormatterUnit unit = NSLengthFormatterUnitMillimeter;
+    [self unitStringFromMeters:distance usedUnit:&unit];
+    
+    self.numberFormatter.roundingIncrement = @0.25;
+    
+    if (unit == NSLengthFormatterUnitYard) {
+        if (miles > 0.2) {
+            unit = NSLengthFormatterUnitMile;
+            return [self stringFromValue:miles unit:unit];
+        } else {
+            unit = NSLengthFormatterUnitFoot;
+            self.numberFormatter.roundingIncrement = @50;
+            return [self stringFromValue:feet unit:unit];
+        }
+    } else {
+        return [self stringFromMeters:distance];
+    }
+}
+
+@end