JSFiddle - React, Tailwind, and code Playground

by GregWoods

HTML

<title>Slot Car Track Designer</title>    
<body>

</body>

JavaScript

var vis = d3.select("body").append("svg")
    .attr("width", 200)
    .attr("height", 200);

var arc = d3.svg.arc()
    .innerRadius(50)
    .outerRadius(70)
    .startAngle(45 * (Math.PI/180)) //converting from degs to radians
    .endAngle(3) //just radians

vis.append("path")
    .attr("d", arc)
    .attr("transform", "translate(200,200)")