Annotation class abstract

Base interface for all data-driven map annotations drawn via style layers (symbols, lines, fills, circles, etc.).

Implementations should be immutable value objects that describe the geometry & styling properties needed for rendering. They are serialized into GeoJSON features (see toGeoJson) and passed across the platform boundary to the native/web MapLibre engines.

Typical workflow:

1. Create a concrete annotation (e.g. Symbol, Line, Fill, Circle).
2. Add it through the corresponding manager (e.g. SymbolManager.add).
3. When interaction (drag) occurs or you update the model, the manager re-emits the updated GeoJSON using toGeoJson.

Constructors

Annotation()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Unique stable identifier within its manager.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toGeoJson() → Map<String, dynamic>

Converts this annotation into a GeoJSON Feature (WGS84 lon/lat) map understood by the underlying MapLibre style source.

toString() → String

A string representation of this object.

inherited

translate(LatLng delta) → void

Moves the annotation by the given geographic delta.

Operators

operator ==(Object other) → bool

The equality operator.

inherited