@thi.ng/geom-voronoi
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    1.0.5 • Public • Published

    geom-voronoi

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    This project is part of the @thi.ng/umbrella monorepo.

    About

    Fast, incremental 2D Delaunay & Voronoi mesh implementation, based on the @thi.ng/quad-edge data structure after Guibas & Stolfi and partially ported from C++ versions by Dani Lischinski, Paul Heckbert et al:

    References:

    Construction speed: 20k random points (poisson disc samples, even distribution) in ~850ms (Chrome 72, MBP 2016)

    Status

    STABLE - used in production

    Search or submit any issues for this package

    Related packages

    Installation

    yarn add @thi.ng/geom-voronoi
    // ES module
    <script type="module" src="https://unpkg.com/@thi.ng/geom-voronoi?module" crossorigin></script>
    
    // UMD
    <script src="https://unpkg.com/@thi.ng/geom-voronoi/lib/index.umd.js" crossorigin></script>

    Package sizes (gzipped, pre-treeshake): ESM: 1.30 KB / CJS: 1.38 KB / UMD: 1.51 KB

    Dependencies

    Usage examples

    Several demos in this repo's /examples directory are using this package.

    A selection:

    Screenshot Description Live demo Source
    Poisson-disk shape-aware sampling, Voronoi & Minimum Spanning Tree visualization Demo Source
    Animated Voronoi diagram, cubic splines & SVG download Demo Source

    API

    Generated API docs

    example screenshot

    import * as g from "@thi.ng/geom";
    import { DVMesh } from "@thi.ng/geom-voronoi";
    import { repeatedly } from "@thi.ng/transducers";
    import { randNorm2 } from "@thi.ng/vectors";
    
    const pts = [...repeatedly(() => randNorm2([], Math.random() * 250), 1000)];
    
    const mesh = new DVMesh(pts);
    
    // raw polygons of primary or dual mesh
    mesh.delaunay()
    mesh.voronoi()
    
    // ...or clipped & filtered polygons within convex polygon boundary
    const bounds = g.vertices(g.center(g.rect(500)));
    // [ [ -250, -250 ], [ 250, -250 ], [ 250, 250 ], [ -250, 250 ] ]
    
    const cells = mesh.voronoi(bounds);
    
    document.body.innerHtml = g.asSvg(
        g.svgDoc({ fill: "none", "stroke-width": 0.25 },
            g.group({ stroke: "blue" }, mesh.delaunay(bounds).map((p) => g.polygon(p))),
            g.group({ stroke: "red" }, mesh.voronoi(bounds).map((p) => g.polygon(p)))
        )
    );

    Authors

    Karsten Schmidt

    If this project contributes to an academic publication, please cite it as:

    @misc{thing-geom-voronoi,
      title = "@thi.ng/geom-voronoi",
      author = "Karsten Schmidt",
      note = "https://thi.ng/geom-voronoi",
      year = 2016
    }

    License

    © 2016 - 2021 Karsten Schmidt // Apache Software License 2.0

    Install

    npm i @thi.ng/geom-voronoi

    DownloadsWeekly Downloads

    169

    Version

    1.0.5

    License

    Apache-2.0

    Unpacked Size

    63.6 kB

    Total Files

    10

    Last publish

    Collaborators

    • thi.ng