Geometry class abstract

A base interface for geometry classes.

Geometry classes (including all subtypes) are immutable.

Inheritance
Implementers
Annotations
  • @immutable

Constructors

Geometry({Box? bounds})
A geometry with an optional bounds.
const

Properties

bounds → Box?
An optional bounding box explicitely set (or otherwise directly available) for this object.
no setterinherited
coordType → Coords
A value of Coords representing the coordinate type of position data contained directly or within child objects.
no setterinherited
geomType → Geom
The geometry type.
no setter
hashCode → int
The hash code for this object.
no setterinherited
isEmptyByGeometry → bool
Returns true if this geometry is considered empty.
no setteroverride
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

area2D() → double
Returns the area of this geometry calculated in a cartesian 2D plane.
boundsAligned2D({Aligned align = Aligned.center, PositionScheme scheme = Position.scheme}) → Position?
Returns an aligned 2D position relative to a bounding box accessed by getBounds.
inherited
calculateBounds({PositionScheme scheme = Position.scheme}) → Box?
Calculate a bounding box for this object.
inherited
centroid2D({PositionScheme scheme = Position.scheme}) → Position?
Returns the centroid of this geometry calculated in a cartesian 2D plane.
dimensionality2D() → Dimensionality
Returns the true dimensionality of this geometry in 2D.
equals2D(covariant Geometry other, {double toleranceHoriz = defaultEpsilon}) → bool
True if this and other equals by testing 2D coordinate values of all position data (that must be in same order in both objects) contained directly or by child objects.
override
equals3D(covariant Geometry other, {double toleranceHoriz = defaultEpsilon, double toleranceVert = defaultEpsilon}) → bool
True if this and other equals by testing 3D coordinate values of all position data (that must be in same order in both objects) contained directly or by child objects.
override
equalsCoords(covariant Geometry other) → bool
True if this and other contain exactly same coordinate values (or both are empty) in the same order and with the same coordinate type.
override
getBounds({PositionScheme scheme = Position.scheme}) → Box?
Returns the current bounds if it's populated and conforms to scheme, or otherwise returns one calculated by calculateBounds.
inherited
length2D() → double
Returns the length of this geometry calculated in a cartesian 2D plane.
length3D() → double
Returns the length of this geometry calculated in a cartesian 3D space.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
populated({int traverse = 0, bool onBounds = true, PositionScheme scheme = Position.scheme}) → Geometry
Returns a geometry of the same subtype as this with certain data members populated.
override
project(Projection projection) → Geometry
Returns an object of the same subtype as this with all position data projected using projection and non-positional properties left intact.
override
toBytes({BinaryFormat<GeometryContent> format = WKB.geometry, Endian? endian, CoordRefSys? crs, Map<String, dynamic>? options}) → Uint8List
The binary representation of this geometry object, with format applied.
toBytesHex({BinaryFormat<GeometryContent> format = WKB.geometry, Endian? endian, CoordRefSys? crs, Map<String, dynamic>? options}) → String
The binary representation as a hex string of this geometry object, with format applied.
toString() → String
The string representation of this geometry object as specified by GeoJSON.
override
toText({TextWriterFormat<GeometryContent> format = GeoJSON.geometry, int? decimals, CoordRefSys? crs, Map<String, dynamic>? options}) → String
The string representation of this geometry object, with format applied.
unpopulated({int traverse = 0, bool onBounds = true}) → Geometry
Returns a geometry of the same subtype as this with certain data members unpopulated (or cleared).
override
writeTo(GeometryContent writer, {String? name}) → void
Writes this geometry object to writer.

Operators

operator ==(Object other) → bool
The equality operator.
inherited