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Description:

google maps utils

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
Feature links for reasearch #
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 heading = SphericalUtils.computeHeading(from, to);
print('Heading: $heading degrees');

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
/// Heading: 26.302486345342523
/// 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
}
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Result #

Distance: 1241932.6430813475 meters

Heading: 26.302486345342523 degrees

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