esm-potrace-wasm
v0.4.1TypeScript
A modern ESM build of the Potrace library for use in the browser.
4.3K/weekUpdated 3 years agoGPL-2.0Unpacked: 105.1 KB
Published by Thomas Steiner
npm install esm-potrace-wasmESM Potrace Wasm
A modern ESM build of the Potrace library for use in the browser.
Installation
``bash`
npm install --save esm-potrace-wasm
Usage
`js
import { potrace, init } from 'esm-potrace-wasm';
(async () => {
// Initialize the module once.
await init();
/**
* The imageBitmapSource parameter is an ImageBitmapSource, that is any of:HTMLImageElement
* -
* -
* -
* -
* -
* -
* -
*/
const svg = await potrace(
imageBitmapSource,
(options = {
turdsize: 2,
turnpolicy: 4,
alphamax: 1,
opticurve: 1,
opttolerance: 0.2,
pathonly: false,
extractcolors: true,
posterizelevel: 2, // [1, 255]
posterizationalgorithm: 0, // 0: simple, 1: interpolation
})
);
})();
Developing
Modify src/potrace/ and run npm run build to update the ESM build in dist/../build.sh
The emscripten build file is located at (or build.ps1 for Win32) respectively. A simple demodist/index.js
that imports is available in demo/ and can be started by running npm start`.
Apps using this
This library is used in SVGcode.
License
⚠️ GPL-v2.0, due to the original Potrace license.
Acknowledgements
Based on @nturley's fork of
@IguteChung's initial potrace-wasm.
Unfortunately, the original author did not react on my
Pull Request, so I forked.