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• About
• Status
• Installation
• Dependencies
• Usage examples
• API
• Authors
• License

About

n-D spatial indexing data structures with a shared ES6 Map/Set-like API.

Some implementations were ported from the Clojure version of thi.ng/geom.

Currently available:

• HashGrid2/3
• KdTreeMap
• KdTreeSet
• NdQuadtreeMap
• NdQuadtreeSet
• SpatialGrid2
• SpatialGrid3

Status

STABLE - used in production

Search or submit any issues for this package

Installation

yarn add @thi.ng/geom-accel

ESM import:

import * as accel from "@thi.ng/geom-accel";

Browser ESM import:

<script type="module" src="https://esm.run/@thi.ng/geom-accel"></script>

JSDelivr documentation

For Node.js REPL:

const accel = await import("@thi.ng/geom-accel");

Package sizes (brotli'd, pre-treeshake): ESM: 4.71 KB

Dependencies

• @thi.ng/api
• @thi.ng/arrays
• @thi.ng/checks
• @thi.ng/distance
• @thi.ng/equiv
• @thi.ng/errors
• @thi.ng/geom-isec
• @thi.ng/heaps
• @thi.ng/math
• @thi.ng/transducers
• @thi.ng/vectors

Note: @thi.ng/api is in most cases a type-only import (not used at runtime)

Usage examples

Seven projects in this repo's /examples directory are using this package:

Screenshot	Description	Live demo	Source
	Basic 2D boid simulation and spatial indexing neighbor lookups	Demo	Source
	Doodle w/ K-nearest neighbor search result visualization	Demo	Source
	K-nearest neighbor search in an hash grid	Demo	Source
	Poisson-disk shape-aware sampling, Voronoi & Minimum Spanning Tree visualization	Demo	Source
	2D Poisson-disc sampler with procedural gradient map	Demo	Source
	Image-based Poisson-disk sampling	Demo	Source
	2D Stratified grid sampling example	Demo	Source

API

Generated API docs

TODO

Authors

• Karsten Schmidt

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

@misc{thing-geom-accel,
  title = "@thi.ng/geom-accel",
  author = "Karsten Schmidt",
  note = "https://thi.ng/geom-accel",
  year = 2013
}

License

© 2013 - 2025 Karsten Schmidt // Apache License 2.0