coordinates library

Geographic (longitude-latitude) and projected positions and bounding boxes.

Contains also coordinate reference system (CRS) metadata and projection abstraction classes.

This libary exports a subset of package:geobase/geobase.dart.

Usage: import package:geobase/coordinates.dart

Classes

Aligned: An aligned point within a geospatial box or tile.
Box: A base interface for axis-aligned bounding boxes with min & max coordinates.
CoordRefSys: Metadata about a coordinate reference system (CRS) identified and specified by id.
CoordRefSysResolver: An abstract class for resolving coordinate reference system information.
Dms: A default implementation for DmsFormat abstract base class, that defines methods for parsing and formatting degrees/minutes/seconds on latitude, longitude and bearing values.
DmsFormat: A base class for formatters with methods for parsing and formatting degrees/minutes/seconds on latitude, longitude and bearing values.
GeoBox: A geographic bounding box with west, south, east and north values.
Geographic: A geographic position with longitude, latitude and optional elevation and m.
Position: A base interface for geospatial positions.
Positionable: A positionable object has (geospatial) coordinate values available.
ProjBox: A bounding box with minX, minY, maxX and maxY coordinates.
Projected: A projected position with x, y, and optional z and m coordinates.
Scalable: A scalable object at the zoom level (a positive number).
Scalable2i: Scalable x, y coordinates at the zoom level.

PositionData<E extends Position>: A fixed-length and random-access view to positions with coordinate values.
Projection: A mixin defining an interface for (geospatial) projections.
ProjectionAdapter: A projection adapter bundles forward and inverse projections.

DoubleAngleExtension: An extension on double with basic degrees and radians utility methods.

defaultEpsilon → const double: The default epsilon value 1.0e-9 used as a tolerance in equals2D, equals3D and similar methods in this package.
1.0e-9
doublePrecisionEpsilon → const double: The maximum relative precision of double numbers (IEEE 754).
2.220446049250313e-16

clampLatitude(double lat) → double: Returns a clipped latitude in the range [-90.0, 90.0].
normalizeLongitude(double lon) → double: Returns a normalized longitude in the range [-180.0, 180.0[ by using the formula (lon + 180.0) % 360.0 - 180.0 (if outside the range).

AxisOrder: The axis order of coordinate values in position and point representations.
CardinalPrecision: The precision for cardinal directions (compass point).
Coords: An enum for coordinate types (by spatial dimension and whether is measured).
DmsType: An enum for common representation of geographic positions by coordinates (using degrees, minutes and seconds as components).
GeoRepresentation: An enum for spatial representations that can be used to code logic when need to choose some options based on a representation.

CreateBox<T extends Box> = T Function({double? maxM, required double maxX, required double maxY, double? maxZ, double? minM, required double minX, required double minY, double? minZ}): Creates a new bounding box from minX, minY, maxX and maxY values.
CreatePosition<T extends Position> = T Function({double? m, required double x, required double y, double? z}): Creates a new position of T from x and y, and optional z and m.
TransformPosition = T Function<T extends Position>(T source): A function to transform the source position of T to a position of T.