Rough.js
Rough.js is a small (<9kB gzipped) graphics library that lets you draw in a sketchy, hand-drawn-like, style.
The library defines primitives to draw lines, curves, arcs, polygons, circles, and ellipses. It also supports drawing SVG paths.
Rough.js works with both Canvas and SVG.
Install
Install from npm:
npm install --save roughjsAnd use it in your code:
import rough from 'roughjs';Usage
View Full Rough.js API is available on Github.
const rc = rough.canvas(document.getElementById('canvas'));
rc.rectangle(10, 10, 200, 200); or SVG
const rc = rough.svg(svg);
let node = rc.rectangle(10, 10, 200, 200);
svg.appendChild(node);Lines and Ellipses
rc.circle(80, 120, 50);
rc.ellipse(300, 100, 150, 80);
rc.line(80, 120, 300, 100); Filling
rc.circle(50, 50, 80, { fill: 'red' });
rc.rectangle(120, 15, 80, 80, { fill: 'red' });
rc.circle(50, 150, 80, {
fill: "rgb(10,150,10)",
fillWeight: 3
});
rc.rectangle(220, 15, 80, 80, {
fill: 'red',
hachureAngle: 60,
hachureGap: 8
});
rc.rectangle(120, 105, 80, 80, {
fill: 'rgba(255,0,200,0.2)',
fillStyle: 'solid'
});Fill styles can be: hachure(default), solid, zigzag, cross-hatch, dots, sunburst, dashed, or zigzag-line
Sketching style
rc.rectangle(15, 15, 80, 80, { roughness: 0.5, fill: 'red' });
rc.rectangle(120, 15, 80, 80, { roughness: 2.8, fill: 'blue' });
rc.rectangle(220, 15, 80, 80, { bowing: 6, stroke: 'green', strokeWidth: 3 });SVG Paths
rc.path('M80 80 A 45 45, 0, 0, 0, 125 125 L 125 80 Z', { fill: 'green' });
rc.path('M230 80 A 45 45, 0, 1, 0, 275 125 L 275 80 Z', { fill: 'purple' });
rc.path('M80 230 A 45 45, 0, 0, 1, 125 275 L 125 230 Z', { fill: 'red' });
rc.path('M230 230 A 45 45, 0, 1, 1, 275 275 L 275 230 Z', { fill: 'blue' });SVG Path with simplification:
Examples
API & Documentation
Credits
Core algorithms for drawing lines and ellipse outlines were adapted from handy processing lib.
Algorithm to convert SVG arcs to Canvas described here was adapted from Mozilla codebase
License
Read More
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