flutter_hkgrid80_wgs84_converter

Description:

flutter hkgrid80 wgs84 converter

flutter_hkgrid80_wgs84_converter #
This package allows you to convert WGS 84 Latitude and Longitude to Hong Kong Grid 1980 Easting and Northing.
Usage #
Add this repository to pubspec.yaml.
Example:
dependencies:
flutter:
sdk: flutter
flutter_hkgrid80_wgs84_converter:
git:
url: git://github.com/lowkahonn/flutter_hkgrid80_wgs84_converter
ref: master
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Import package:flutter_hkgrid80_wgs84_converter/flutter_hkgrid80_wgs84_converter.dart, and use Converter.convert to convert between the two systems.
Note: This converter is up to 1e-5% error.
Example:
import 'package:flutter_hkgrid80_wgs84_converter/flutter_hkgrid80_wgs84_converter.dart';

final coordinate = new Coordinate(
x: 834349.252,
y: 815894.556,
lat: 22.281927,
lng: 114.158256
);

// from x y to lat long
Coordinate latLng = Converter.convert.gridToLatLng(coordinate);
print(latLng.lat.toString()); // 22.281930012478536
print(latLng.lng.toString()); // 114.15824821181121

// from lat long to x y
Coordinate xy = Converter.convert.latLngToGrid(coordinate);
print(xy.x.toString()); // 834350.1488648592
print(xy.y.toString()); // 815894.2762260285
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