A fork of RecastCLI that builds a subset of its functionality in WebAssembly, so you can build a navigation mesh directly in a browser.

Usage

npm install -S recast-wasm

import Recast from "recast-wasm";

const recast = await Recast.ready();

const vertices = new Float32Array();
const faces = new Uint16Array();

recast.loadArray(vertices, faces);

const status = recast.build(
  0.166, // cellSize
  0.1, // cellHeight
  1.7, // agentHeight
  0.5, // agentRadius
  0.3, // agentMaxClimb
  45, // agentMaxSlope
  1, // regionMinSize
  20, // regionMergeSize
  12, // edgeMaxLen
  1, // edgeMaxError
  3, // vertsPerPoly
  16, // detailSampleDist
  1 // detailSampleMaxError
);

if (status !== 0) return;

const meshes = recast.getMeshes();
const verts = recast.getVerts();
const tris = recast.getTris();

// Use nav mesh data

recast.freeNavMesh();

See the /example folder for a more complete example.

Building from source

Install docker

npm run build

Running the example:

npm build
npm start

Credits

https://github.com/recastnavigation/recastnavigation

https://github.com/but0n/recastCLI.js

https://github.com/mqp/recastCLI.js