dom-to-points library
by albinotonnina
HTML
<div id="drawing"></div>
JavaScript
// THIS IS SOMETHING YOU COULD DO WITH THE OUTPuT OF dom-to-points
// https://github.com/albinotonnina/dom-to-points
const pointsIGotWithDomToPoints = '0,0 300,0 300,100 0,100 0,100 200,100 200,200 0,200 0,200 200,200 200,300 0,300 0,300 300,300 300,400 0,400 0,400 0,300 0,300 0,200 0,200 0,100 0,100 0,0'
const draw = SVG('drawing').size(1000, 600)
var polygon = draw.polygon(pointsIGotWithDomToPoints).fill('#f06')