S2 class

Constructors

S2({required int face, required List<int> ij, required int level})

Properties

face ↔ int

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

ij ↔ List<int>

getter/setter pair

level ↔ int

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getCornerLatLngs() → List<LatLng>

Get 4 corner LatLngs of the S2 Cell

getFaceAndQuads() → List

Get face and quads of the S2 Cell

getLatLng() → LatLng

Convert S2 Cell to LatLng

getNeighbors() → List<S2>

Get 4 neighboring S2 Cells

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toHilbertQuadkey() → String

Convert S2 Cell to Hilbert Quadkey

toString() → String

String representation of the S2 Cell

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

facePosLevelToId(int faceN, String posS, int? levelN) → BigInt

61 (60 bits of data, 1 bit lsb marker) Convert face, position, and level to S2 Cell ID

fromFaceIJ(int face, List<int> ij, int level) → S2

Create S2 Cell from face, ij, and level

fromHilbertQuadKey(String hilbertQuadkey) → S2

Convert Hilbert Quadkey to S2 Cell

fromLatLng(LatLng latLng, int level) → S2

Convert LatLng to S2 Cell

idToKey(BigInt id) → String

Convert S2 Cell ID to quadkey

idToLatLng(BigInt id) → LatLng

Convert S2 Cell ID to LatLng

keyToId(String key) → BigInt

Convert quadkey to S2 Cell ID

keyToLatLng(String key) → LatLng

Convert quadkey to LatLng

latLngToId(double lat, double lng, {int level = 15}) → BigInt

Convert LatLng to S2 Cell ID

latLngToKey(double lat, double lng, int level) → String

Convert LatLng to quadkey

latLngToNeighborKeys(double lat, double lng, int level) → List<String>

Convert LatLng to neighboring Hilbert Quadkeys

latLngToXYZ(LatLng latLng) → List<double>

Convert lat,lng to 3D point (x, y, z)

nextKey(String key) → String

Calculate the next Hilbert QuadKey

prevKey(String key) → String

Calculate the previous Hilbert QuadKey

stepKey(String key, int num) → String

Stepping operation for quadkey

xyzToLatLng(List<double> xyz) → LatLng

Convert 3D point (x, y, z) to lat,lng

Constants

faceBITS → const int

Constants

maxLEVEL → const int

posBITS → const int