Converts path commands for an SVG path to polygonal points.
npm install svg-path-to-polygons* Sparsely represents linear portions of the path by the minimal number of points.
* Does not skip any imporant features.
* Uses adaptive subsampling for curves to represent them exactly in the fewest number of points, with an arbitrary tolerance.
npm install svg-path-to-polygons
js
const { pathDataToPolys } = require('../svg-path-to-polygons.js');
let pathData = 'M5,15 c5.5,0 10-4.5 10,-10 h10';
let points = pathDataToPolys(pathData, {tolerance:1, decimals:1});
console.log(points);
/*
[
[ [5,15],[7,14.8],[10.6,13.3],[13.3,10.6],[14.8,7],[15,5],[25,5] ]
]
**/
`Note that the output for every path is an array of polygons/polylines (even if there is only one), where each polygon/polyline is an array of points, and where each point is an array of two numbers.
Each polygon/polyline also includes a custom
closed property that defines whether the SVG subpath was closed (i.e. ended with a z or Z command).The optional
tolerance option specifies how far (in SVG coordinates) the polygon path may deviate from ideal curves. If not supplied, it defaults to 1.The optional
decimals option controls the precision of values produces for each point. Only non-negative values are currently supported. If unspecified, full precision is used for each number.
TODO (aka Known Limitations)
* Need to support quadratic Bézier commands.
* Need to support arc commands.
* Subsample linear sections if they are within the
tolerance.
* Support negative values for decimals.License, Contact, and Support
Copyright 2017 Gavin Kistner (!@phrogz.net)
MIT License. See
LICENSE` file for details.Please file bugs and feature requests on the GitHub page.