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delaunator

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delaunator

An incredibly fast JavaScript library for Delaunay triangulation of 2D points

  • 5.0.1
  • latest
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  • npm
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2.5M
decreased by-22.88%
Maintainers
29
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What is delaunator?

The delaunator npm package is a fast library for Delaunay triangulation of 2D points. It is used to triangulate a set of points into a mesh of triangles, which is a fundamental operation in many geometric algorithms. The package is particularly useful in graphics, geographical information systems (GIS), and for performing various computational geometry tasks.

What are delaunator's main functionalities?

Triangulation

This feature allows you to perform Delaunay triangulation on an array of points. The 'triangles' property of the resulting object contains the indices of the points that form the triangles.

const Delaunator = require('delaunator');
const points = [[0, 0], [1, 0], [1, 1], [0, 1]];
const delaunay = Delaunator.from(points);
console.log(delaunay.triangles);

Hull

This feature provides the convex hull of the input points as an array of point indices that are in the hull. The hull is the outermost 'shell' of the triangulation.

const Delaunator = require('delaunator');
const points = [[0, 0], [1, 0], [1, 1], [0, 1]];
const delaunay = Delaunator.from(points);
console.log(delaunay.hull);

Coordinates Conversion

Delaunator can also take a flat array of coordinates and perform triangulation. This is useful when working with data that is not already structured as an array of points.

const Delaunator = require('delaunator');
const coords = [0, 0, 1, 0, 1, 1, 0, 1];
const delaunay = Delaunator.from(coords);
console.log(delaunay.triangles);

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Package last updated on 24 Jan 2024

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