JSFiddle - React, Tailwind, and code Playground

by bmdhacks

JavaScript

var w = 500,
    h = 600,
    fill = d3.scale.category10(),
    nodes = d3.range(100).map(Object);

var svg = d3.select("body").append("svg:svg")
    .attr("width", w)
    .attr("height", h);

var force = d3.layout.force()
    .nodes(nodes)
    .links([])
    .size([w, h])
    .start();

var node = svg.selectAll("circle.node")
    .data(nodes)
  .enter().append("svg:circle")
    .attr("class", "node")
    .attr("cx", function(d) { return d.x; })
    .attr("cy", function(d) { return d.y; })
    .attr("r", 8)
    .style("fill", function(d, i) { return fill(i*255/100,(100-i)*255/100,0); })
    .style("stroke", function(d, i) { return d3.rgb(fill(i*255/100,(100-i)*255/100,0)).darker(2); })
    .style("stroke-width", 1.5)
    .call(force.drag);

force.on("tick", function(e) {

  // Push different nodes in different directions for clustering.
  var k = 4 * e.alpha;
  //  var k = 0.5;
  nodes.forEach(function(o, i) {
    o.y += (k * (-.7+ 0.1*i));
    o.x += i & 2 ? k : -k;
  });

  node.attr("cx", function(d) { return d.x; })
      .attr("cy", function(d) { return d.y; });
});

d3.select("body").on("click", function() {
  nodes.forEach(function(o, i) {
    o.x += (Math.random() - .5) * 40;
    o.y += (Math.random() - .5) * 40;
  });
  force.resume();
});