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Diffstat (limited to 'platform/darwin/src/MGLFeature.h')
| -rw-r--r-- | platform/darwin/src/MGLFeature.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/platform/darwin/src/MGLFeature.h b/platform/darwin/src/MGLFeature.h index 491c89b608..a13821cf96 100644 --- a/platform/darwin/src/MGLFeature.h +++ b/platform/darwin/src/MGLFeature.h @@ -18,15 +18,23 @@ NS_ASSUME_NONNULL_BEGIN You can add custom data to display on the map by creating feature objects and adding them to an `MGLShapeSource` using the `-[MGLShapeSource initWithIdentifier:shape:options:]` method or - `MGLShapeSource.shape` property. Similarly, you can add `MGLPointFeature`, - `MGLPolylineFeature`, and `MGLPolygonFeature` objects to the map as annotations - using `-[MGLMapView addAnnotations:]` and related methods. + `MGLShapeSource.shape` property. In addition to adding data to the map, you can also extract data from the map: `-[MGLMapView visibleFeaturesAtPoint:]` and related methods return feature objects that correspond to features in the source. This enables you to inspect the properties of features in vector tiles loaded by `MGLVectorSource` objects. You also reuse these feature objects as overlay annotations. + + While it is possible to add `MGLFeature`-conforming objects to the map as + annotations using `-[MGLMapView addAnnotations:]` and related methods, doing so + has trade-offs: + + - Features added as annotations will not have `identifier` or `attributes` + properties when used with feature querying. + + - Features added as annotations become interactive. Taps and selection can be + handled in `-[MGLMapViewDelegate mapView:didSelectAnnotation:]`. */ @protocol MGLFeature <MGLAnnotation> |