@thi.ng/random

@thi.ng/random

npm versionnpm downloads Mastodon Follow

[!NOTE] This is one of 190 standalone projects, maintained as part of the @thi.ng/umbrella monorepo and anti-framework.

🚀 Please help me to work full-time on these projects by sponsoring me on GitHub. Thank you! ❤️

About

Pseudo-random number generators w/ unified API, distributions, weighted choices, ID generation.

This package provides the IRandom interface and various (mostly seedable) pseudo-random number generator implementations, incl. IRandom wrappers for Math.random() and window.crypto:

Partially ported from C implementations taken from c.thi.ng.

Random distributions

Other utilities

Status

STABLE - used in production

Search or submit any issues for this package

Support packages

Related packages

  • @thi.ng/ksuid - Configurable K-sortable unique IDs, ULIDs, binary & base-N encoded, 32/48/64bit time resolutions

Installation

yarn add @thi.ng/random

ES module import:

<script type="module" src="https://cdn.skypack.dev/@thi.ng/random"></script>

Skypack documentation

For Node.js REPL:

const random = await import("@thi.ng/random");

Package sizes (brotli'd, pre-treeshake): ESM: 1.99 KB

Dependencies

Usage examples

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

ScreenshotDescriptionLive demoSource
Self-modifying, animated typographic grid with emergent complex patternsDemoSource
Probabilistic color theme generatorDemoSource
Interactive inverse FFT toy synthDemoSource
2D Bezier curve-guided particle systemDemoSource
Basic hiccup-based canvas drawingDemoSource
Barnsley fern IFS fractal rendererDemoSource
k-means clustering visualizationDemoSource
Randomized space-filling, nested grid layout generatorDemoSource
Randomized 4-point 2D color gradient image generatorDemoSource
Interactive pixel sorting tool using thi.ng/color & thi.ng/pixelDemoSource
Animated, iterative polygon subdivisions & visualizationDemoSource
Procedural stochastic text generation via custom DSL, parse grammar & AST transformationDemoSource
Generative audio synth offline renderer and WAV file exportDemoSource
Evolutionary shader generation using genetic programmingDemoSource
Responsive & reactively computed stacked column layoutDemoSource
Game of Life implemented as WebGL2 multi-pass shader pipelineDemoSource

API

Generated API docs

import { Smush32 } from "@thi.ng/random";

const rnd = new Smush32(0xdecafbad);

// the following methods are available for all generators

// next uint (0 .. 2^32-1)
rnd.int()
// 4022849029

// next float [0.0 .. 1.0)
rnd.float()
// 0.2698542904737066

// next normalized float (w/ opt scale)
// [-scale .. +scale)
rnd.norm(100)
// 57.70723665079737

// next float in given interval [min .. max)
rnd.minmax(10, 20)
// 15.295951807707537

rnd.minmaxInt(10, 20)

Authors

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

@misc{thing-random,
title = "@thi.ng/random",
author = "Karsten Schmidt",
note = "https://thi.ng/random",
year = 2015
}

License

© 2015 - 2024 Karsten Schmidt // Apache License 2.0

Generated using TypeDoc