Initial version comes with the 3 main Classes. SphericalUtils, MathUtils and PolyUtils, calculating bounds, distances headings and many more.

# An Android Google Maps Utils original java project port for Flutter #

A Flutter/Dart project based on Android Google Maps Utils converted/ported to Dart/Flutter There are many packages that features Google Maps Utils, but none has the 3 main classes from the sources

## Status: 3 of 78 classes converted #

This is a project for converting all of the tools from Android Google Maps Utils partially. Initial commits from the 3 main Classes, MathUtils.java, PolyUtils.java and SphericalUtils.java The same rules for calculating bounds, distance between two Point points and other polyline features are the same as used on Android native Java/Kotlin logic. All of the methods of current classes available are ported You can request classes for me to port as an issue, the classes ported are what most people uses

Main project: https://github.com/googlemaps/android-maps-utils Main project questions: https://stackoverflow.com/questions/tagged/android-maps-utils Fluttert community request: https://github.com/flutter/flutter/issues/24689

## Example *.dart #

``````    import 'package:google_maps_utils/google_maps_utils.dart';

void main() {
Point from = Point(0.0, 0.0);
Point to = Point(10.0, 5.0);
Point randomPoint = Point(-23.54545, -23.898098);

double distance = SphericalUtils.computeDistanceBetween(from, to);
print('Distance: \$distance meters');

double angle = SphericalUtils.computeAngleBetween(from, to);
print('Angle: \$angle degrees');

double distanceToAB = PolyUtils.distanceToLine(randomPoint, from, to);
print('Distance to Line: \$distanceToAB meters');

/// Distance: 1241932.6430813475
/// Angle: 0.19493500057547358
/// Distance to Line: 3675538.1518512294

/// See grid path on: https://developers.google.com/maps/documentation/utilities/polylinealgorithm

List<Point> path = PolyUtils.decode(
'wjiaFz`hgQs}GmmBok@}vX|cOzKvvT`uNutJz|UgqAglAjr@ijBz]opA|Vor@}ViqEokCaiGu|@byAkjAvrMgjDj_A??ey@abD');

print('path size length: \${path.length}');

List<Point> simplifiedPath = PolyUtils.simplify(path, 5000);
String simplifiedPathEncoded = PolyUtils.encode(simplifiedPath);

print('simplified path: \$simplifiedPathEncoded');
print('path size simplified length: \${simplifiedPath.length}');

/// Example by: https://github.com/nicolascav
Point point = Point(-31.623060136389135, -60.68669021129609);

/// Triangle
List<Point> polygon = [
Point(-31.624115, -60.688734),
Point(-31.624115, -60.684657),
Point(-31.621594, -60.686717),
Point(-31.624115, -60.688734),
];

bool contains = PolyUtils.containsLocationPoly(point, polygon);
print('point is inside polygon?: \$contains');

/// And Many more
}
``````

## Result #

• Distance: 1241932.6430813475 meters

• Angle: 0.19493500057547358 degrees

• Distance to Line: 3675538.1518512294 meters

• path size length: 17

• simplified path: wjiaFz`hgQcjIke\t{d@|aOutJz|UokC}xWomJdjM

• path size simplified length: 6

• point is inside polygon?: true

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