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path2d-polyfill

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path2d-polyfill

Polyfills Path2D api for canvas rendering


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path2d-polyfill

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Polyfills Path2D api for rendering SVG paths in canvas

Use this to enable Path2D features in e.g. Internet Explorer.

Usage

npm install --save path2d-polyfill

include directly in html-page

<html>
  <head>
    ...
  </head>
  <body>
    <script lang="javascript" src='node_modules/path2d-polyfill/path2d-polyfill.js'></script>
  </body>
</html>

or import with module bundler e.g. webpack before you try to use the feature

require('path2d-polyfill');

or if you use transpiler to support es2015+ modules

import 'path2d-polyfill';

Support table

MethodSupported
constructor(SVGPath)Yes
addPath()Yes
closePath()Yes
moveTo()Yes
lineTo()Yes
bezierCurveTo()Yes
quadraticCurveTo()Yes
arc()Yes
ellipse()No
rect()Yes

You can render SVG paths like this

ctx.fill(new Path2D('M 80 80 A 45 45 0 0 0 125 125 L 125 80 Z'));
ctx.stroke(new Path2D('M 80 80 A 45 45 0 0 0 125 125 L 125 80 Z'));
Unfortunately Internet Explorer does not support the `ellipse()` function so Arc commands in SVG Paths will always be based on circles and default to the first radius parameter. This can cause undesirable behaviour.

See it in action

Clone this repo and run the following

npm install
npm run example

open http://localhost:3000 to see the example page.

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Package last updated on 18 May 2018

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