[google_maps_flutter_platform_interface] added getpoint to support projection method pointForMeters in iOS.

packages/google_maps_flutter/google_maps_flutter_platform_interface/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.1.0
+
+* Support projection method pointForMeters, to get the distance in meters to content size from the specified LatLng in the map for iOS.
+
 ## 1.0.2
 
 * Update lower bound of dart dependency to 2.1.0.

packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/method_channel/method_channel_google_maps_flutter.dart

@@ -437,6 +437,14 @@ class MethodChannelGoogleMapsFlutter extends GoogleMapsFlutterPlatform {
     return channel(mapId).invokeMethod<double>('map#getZoomLevel');
   }
 
+  /// Converts a distance in meters to content size.
+  Future<double> getPointsForMeters(double meters, LatLng latLng,
+      {@required int mapId}) {
+    assert(meters != null && latLng != null);
+    return channel(mapId).invokeMethod<double>('projection#getPointsForMeters',
+        <String, dynamic>{"meter": meters, "location": latLng.toJson()});
+  }
+
   /// Returns the image bytes of the map
   @override
   Future<Uint8List> takeSnapshot({

packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/platform_interface/google_maps_flutter_platform.dart

@@ -239,6 +239,12 @@ abstract class GoogleMapsFlutterPlatform extends PlatformInterface {
     throw UnimplementedError('getZoomLevel() has not been implemented.');
   }
 
+  /// Converts a distance in meters to content size.
+  Future<double> getPointsForMeters(double meters, LatLng latLng,
+      {@required int mapId}) {
+    throw UnimplementedError('getPointsForMeters() has not been implemented.');
+  }
+
   /// Returns the image bytes of the map
   Future<Uint8List> takeSnapshot({
     @required int mapId,

packages/google_maps_flutter/google_maps_flutter_platform_interface/pubspec.yaml

@@ -3,7 +3,7 @@ description: A common platform interface for the google_maps_flutter plugin.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter/google_maps_flutter_platform_interface
 # NOTE: We strongly prefer non-breaking changes, even at the expense of a
 # less-clean API. See https://flutter.dev/go/platform-interface-breaking-changes
-version: 1.0.2
+version: 1.1.0
 
 dependencies:
   flutter: