add google_polyline_algorithm proj

Author: OlehMarch

.gitignore

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+# Files and directories created by pub
+.dart_tool/
+.packages
+# Remove the following pattern if you wish to check in your lock file
+pubspec.lock
+
+# Conventional directory for build outputs
+build/
+
+# Directory created by dartdoc
+doc/api/

AUTHORS

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+# Below is a list of people and organizations that have contributed
+# to the MarchDev Toolkit projects. Names should be added to the list like so:
+#
+#   Name/Organization <email address>
+
+MarchDev Toolkit <eo.march.dev@gmail.com>
+    - Oleh Marchenko <oleh.marchenko.95@gmail.com>
+    - Elena Marchenko <eo.marchenko96@gmail.com>

CHANGELOG.md

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+## 1.0.0
+
+* Added `encodePoint`, `encodePolyline` and `decodePolyline` methods
+* Added Examples
+* Added Tests

README.md

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+# google_polyline_algorithm
+
+![Build](https://github.com/marchdev-tk/google_polyline_algorithm/workflows/build/badge.svg)
+[![codecov](https://codecov.io/gh/marchdev-tk/google_polyline_algorithm/branch/master/graph/badge.svg)](https://codecov.io/gh/marchdev-tk/google_polyline_algorithm)
+[![Pub](https://img.shields.io/pub/v/google_polyline_algorithm.svg)](https://pub.dartlang.org/packages/google_polyline_algorithm)
+![GitHub](https://img.shields.io/github/license/marchdev-tk/google_polyline_algorithm)
+![GitHub stars](https://img.shields.io/github/stars/marchdev-tk/google_polyline_algorithm?style=social)
+
+Dart implementation of Googles Polyline Encoding lossy compression Algorithm.
+
+## Getting Started
+
+This package adds following methods to work with Googles Polyline Encoding Algorithm:
+
+* `encodePoint(num current, {num previous = 0, int accuracyExponent = 5})` encodes a single coordinate
+
+* `encodePolyline(List<List<num>> coordinates, {int accuracyExponent = 5})` encodes a list of coordinates into an encoded polyline stirng
+
+* `decodePolyline(String polyline, {int accuracyExponent = 5})` decodes an encoded polyline string into a list of coordinates
+
+## Examples
+
+```dart
+import 'package:google_polyline_algorithm/google_polyline_algorithm.dart';
+
+final coord = encodePoint(-179.9832104);
+print(coord);
+// output is `~oia@'
+
+final coords = encodePolyline([
+  [38.5, -120.2],
+  [40.7, -120.95],
+  [43.252, -126.453],
+]);
+print(coords);
+// output is `_p~iF~ps|U_ulLnnqC_mqNvxq`@'
+
+final polyline = decodePolyline('_p~iF~ps|U_ulLnnqC_mqNvxq`@');
+print(polyline);
+// output is [[38.5, -120.2],[40.7, -120.95],[43.252, -126.453],]
+```

analysis_options.yaml

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+# Defines a default set of lint rules enforced for
+# projects at Google. For details and rationale,
+# see https://github.com/dart-lang/pedantic#enabled-lints.
+include: package:pedantic/analysis_options.1.8.0.yaml
+
+# For lint rules and documentation, see http://dart-lang.github.io/linter/lints.
+# Uncomment to specify additional rules.
+# linter:
+#   rules:
+#     - camel_case_types
+
+# analyzer:
+#   exclude:
+#     - path/to/excluded/files/**

example/README.md

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+# google_polyline_algorithm_example
+
+Demonstrates how to use the google_polyline_algorithm package.
+
+## Usage
+
+```dart
+void main() {
+  final coord = encodePoint(-179.9832104);
+  print(coord);
+  // output is `~oia@'
+
+  final coords = encodePolyline([
+    [38.5, -120.2],
+    [40.7, -120.95],
+    [43.252, -126.453],
+  ]);
+  print(coords);
+  // output is `_p~iF~ps|U_ulLnnqC_mqNvxq`@'
+
+  final polyline = decodePolyline('_p~iF~ps|U_ulLnnqC_mqNvxq`@');
+  print(polyline);
+  // output is [[38.5, -120.2],[40.7, -120.95],[43.252, -126.453],]
+}
+```
+
+
+## Getting Started
+
+For help getting started with Dart, view 
+[online documentation](https://dart.dev/docs), which offers tutorials, 
+samples, guidance, and a full API reference.

example/google_polyline_algorithm_example.dart

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+import 'package:google_polyline_algorithm/google_polyline_algorithm.dart';
+
+void main() {
+  final coord = encodePoint(-179.9832104);
+  print(coord);
+  // output is `~oia@'
+
+  final coords = encodePolyline([
+    [38.5, -120.2],
+    [40.7, -120.95],
+    [43.252, -126.453],
+  ]);
+  print(coords);
+  // output is `_p~iF~ps|U_ulLnnqC_mqNvxq`@'
+
+  final polyline = decodePolyline('_p~iF~ps|U_ulLnnqC_mqNvxq`@');
+  print(polyline);
+  // output is [[38.5, -120.2],[40.7, -120.95],[43.252, -126.453],]
+}

lib/google_polyline_algorithm.dart

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+// Copyright (c) 2020, the MarchDev Toolkit project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library google_polyline_algorithm;
+
+export 'src/google_polyline_algorithm.dart';