CircleGeographicArea class Geographic
Circular geographic area defined by center coordinates and radius in meters.
Represents a circular region around a specific geographic point, useful for proximity-based operations, geofencing applications, and simple area approximations. The circle is defined by its center point and a radius measured in meters from that center.
The containment test uses the great-circle distance between the test point and the center, comparing it against the specified radius.
See also:
- GeographicArea: Abstract base class for all geographic areas.
- RectangleGeographicArea: Rectangular geographic area implementation.
- PolygonGeographicArea: Polygonal geographic area for complex shapes.
- Implemented types
Constructors
- CircleGeographicArea({required int radius, required Coordinates centerCoordinates})
- Creates a circular geographic area with specified center and radius.
Properties
- boundingBox → RectangleGeographicArea
-
Gets the smallest rectangle that completely encloses this geographic area.
no setteroverride
- centerCoordinates ↔ Coordinates
-
The center point of the circular area.
getter/setter pair
- centerPoint → Coordinates
-
Gets the representative center point of this geographic area.
no setteroverride
- hashCode → int
-
The hash code for this object.
no setteroverride
- isDefault → bool
-
Indicates whether this geographic area is in a default or empty state.
no setteroverride
- radius ↔ int
-
The radius of the circle in meters.
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- type → GeographicAreaType
-
Gets the specific type identifier for this geographic area implementation.
no setteroverride
Methods
-
containsCoordinates(
Coordinates point) → bool -
Tests whether a coordinate point lies within this geographic area.
override
-
convert(
GeographicAreaType toType) → GeographicArea? -
Attempts to convert this geographic area to a different type.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
reset(
) → void -
Resets this geographic area to its default empty state.
override
-
toJson(
) → Map< String, dynamic> - Serializes this instance to a JSON-compatible map.
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
covariant CircleGeographicArea other) → bool -
The equality operator.
override