var sim = Newton.Simulator();
var display = document.getElementById('display');
var renderer = Newton.GLRenderer(display);
var particle = Newton.Particle(200, 200);
renderer.render(sim);
sim.add(particle);
sim.start();
<canvas id="display" width="400" height="400"></canvas> <script src='//hunterloftis.github.io/newton/current/newton.min.js'></script>