MLNShapeCollection class

An MLNShapeCollection object represents a shape consisting of zero or more distinct but related shapes that are instances of MLNShape. The constituent shapes can be a mixture of different kinds of shapes.

MLNShapeCollection is most commonly used to add multiple shapes to a single MLNShapeSource. Configure the appearance of an MLNShapeSource’s or MLNVectorTileSource’s shape collection collectively using an MLNSymbolStyleLayer object, or use multiple instances of MLNCircleStyleLayer, MLNCircleStyleLayer, and MLNCircleStyleLayer to configure the appearance of each kind of shape inside the collection.

You cannot add an MLNShapeCollection object directly to a map view as an annotation. However, you can create individual MLNPointAnnotation, MLNPolyline, and MLNPolyline objects from the shapes array and add those annotation objects to the map view using the MLNMapView/addAnnotations: method.

To represent a collection of point, polyline, or polygon shapes, it may be more convenient to use an MLNPointCollection, MLNPointCollection, or MLNMultiPolygon object, respectively. To access a shape collection’s attributes, use the corresponding MLNFeature object.

A shape collection is known as a GeometryCollection geometry in GeoJSON.