coordinates library

Position, bounding box and positions series (with coordinate arrays).

Contains also geographic (longitude-latitude) and projected positions and bounding boxes, scalable coordinates, 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.
Bounded: A positionable object with position data (directly or within child objects) and methods to resolve bounding boxes.
Box: A base class for axis-aligned bounding boxes with min & max coordinates.
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 class for geospatial positions.
Positionable: A positionable object contains data structures for (geospatial) position data, directly or within child objects.
PositionScheme: A position scheme encapsulates position and bounding box factories for certain type of position data.
PositionSeries: A fixed-length (and random-access) view to a series of positions.
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.
ValuePositionable: A positionable object that has (geospatial) coordinate values directly available.

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).
Dimensionality: An enum for dimensionality or topological dimension in the context of geospatial applications.
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.

Projection: A mixin defining an interface for (geospatial) projections.
ProjectionAdapter: A projection adapter bundles forward and inverse projections.

BoxArrayExtension on Iterable<Box?>: A helper extension on Iterable<Box?>.
CoordinateArrayExtension on List<double>: A helper extension on List<double> to handle coordinate values.
PositionArrayExtension on Iterable<Position>: A helper extension on Iterable<Position>.

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

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.
ExpandPosition = Iterable<T> Function<T extends Position>(Position source, {required CreatePosition<T> to}): A function to expand the source position to an iterable of zero or more positions of T using to as a factory.
TransformPosition = T Function<T extends Position>(Position source, {required CreatePosition<T> to}): A function to transform the source position to a position of T using to as a factory.