https://github.com/mikolalysenko/monotone-convex-hull-2d

Robust and fast 2D convex hull
https://github.com/mikolalysenko/monotone-convex-hull-2d

Last synced: 5 days ago
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Robust and fast 2D convex hull

• Host: GitHub
• URL: https://github.com/mikolalysenko/monotone-convex-hull-2d
• Owner: mikolalysenko
• License: mit
• Created: 2014-10-13T20:18:15.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2022-04-17T09:41:18.000Z (over 2 years ago)
• Last Synced: 2024-12-13T08:50:23.525Z (12 days ago)
• Language: JavaScript
• Homepage: https://mikolalysenko.github.io/monotone-convex-hull-2d/visualizer/index.html
• Size: 133 KB
• Stars: 47
• Watchers: 5
• Forks: 6
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
monotone-convex-hull-2d

=======================

Computes the convex hull of a set of points in the plane in O(n log(n)) time using the Monotone chain algorithm.

* [Demo Link](https://mikolalysenko.github.io/monotone-convex-hull-2d/visualizer/index.html)

# Example

```javascript

var convexHull = require('monotone-convex-hull-2d')

var points = [

  [0, 0],

  [1, 0],

  [0, 1],

  [1, 1],

  [0.5, 0.5]

]

console.log(convexHull(points))

```

Output:

```

[ 0, 2, 3, 1 ]

```

# Install

```

npm install monotone-convex-hull-2d

```

# API

### `require('monotone-convex-hull-2d')(points)`

Construct the convex hull of a set of points.

* `points` is an array of points represented as an array of length 2 arrays

**Returns** The convex hull of the point set represented by a clockwise oriented list of indices.

# Credits

(c) 2014 Mikola Lysenko. MIT License

Visualizer (c) 2013 Dan Melanz