https://github.com/jolars/eunoia

A Rust library for Euler and Venn Diagrams
https://github.com/jolars/eunoia

data-visualization euler-diagrams set-visualization venn-diagrams web-app

Last synced: 8 days ago
JSON representation

A Rust library for Euler and Venn Diagrams

• Host: GitHub
• URL: https://github.com/jolars/eunoia
• Owner: jolars
• License: mit
• Created: 2025-11-18T12:50:39.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2026-06-10T21:10:14.000Z (9 days ago)
• Last Synced: 2026-06-10T21:15:40.811Z (9 days ago)
• Topics: data-visualization, euler-diagrams, set-visualization, venn-diagrams, web-app
• Language: Rust
• Homepage: http://eunoia.bz/
• Size: 2.6 MB
• Stars: 4
• Watchers: 0
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE
  • Citation: CITATION.cff
  • Agents: AGENTS.md

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README

          
# Eunoia 

[![Build and

Test](https://github.com/jolars/eunoia/actions/workflows/build-and-test.yml/badge.svg)](https://github.com/jolars/eunoia/actions/workflows/build-and-test.yml)

[![Crates.io](https://img.shields.io/crates/v/eunoia.svg?logo=rust)](https://crates.io/crates/eunoia)

[![npm

version](https://badge.fury.io/js/@jolars%2Feunoia.svg?icon=si%3Anpm)](https://badge.fury.io/js/@jolars%2Feunoia)

[![CRAN

Badge](http://www.r-pkg.org/badges/version/eulerr)](https://cran.r-project.org/package=eulerr)

[![PyPI

version](https://badge.fury.io/py/eunoia.svg?icon=si%3Apython)](https://badge.fury.io/py/eunoia)

[![codecov](https://codecov.io/gh/jolars/eunoia/graph/badge.svg?token=hpXwdIe58E)](https://codecov.io/gh/jolars/eunoia)

A Rust library for Euler and Venn Diagrams. This is a rewrite of the eulerr R

package, designed to be more flexible, faster, and support multiple language

bindings.

Narrative documentation lives at [eunoia.bz/docs/](https://eunoia.bz/docs/); the

rustdoc reference is at [docs.rs/eunoia](https://docs.rs/eunoia/).

## JavaScript / TypeScript

WebAssembly bindings are published as

[`@jolars/eunoia`](https://www.npmjs.com/package/@jolars/eunoia):

```sh

npm install @jolars/eunoia

```

```ts

import { euler, venn } from "@jolars/eunoia";

// Fit an Euler diagram from set sizes

const layout = euler({

  sets: { A: 5, B: 2, "A&B": 1 },

  shape: "circle",        // "circle" | "ellipse" | "square"

  output: "shapes",       // "shapes" | "polygons" | "regions"

  inputType: "exclusive", // "exclusive" | "inclusive"

  seed: 42,

});

if (layout.mode === "shapes" && layout.shape === "circle") {

  for (const c of layout.circles) {

    console.log(c.label, c.x, c.y, c.radius);

  }

}

console.log(layout.metrics.loss, layout.metrics.fittedAreas);

// Or build a canonical n-set Venn diagram

const v = venn({ n: 3, output: "regions" });

```

The package is built with `wasm-pack --target bundler`, so it works with any

modern bundler (Vite, Webpack, Rollup, esbuild) and Node 20+.