Basic JavaScript Playground

const createScene = function () {
    // Creates a basic Babylon Scene object
    const scene = new BABYLON.Scene(engine);
    // Creates and positions a free camera
    const camera = new BABYLON.FreeCamera("camera1", 
        new BABYLON.Vector3(0, 5, -10), 
        scene);
    // Targets the camera to scene origin
    camera.setTarget(BABYLON.Vector3.Zero());
    // Attaches the camera to the canvas
    camera.attachControl(canvas, true);
    // Creates a light, aiming 0,1,0
    const light = new BABYLON.HemisphericLight("light", 
        new BABYLON.Vector3(0, 1, 0), 
        scene);
    // Dim the light a small amount 0 - 1
    light.intensity = 0.7;
    // Built-in 'sphere' shape.
    const sphere = BABYLON.MeshBuilder.CreateSphere("sphere", 
        {diameter: 2, segments: 32}, 
        scene);
    // Move phere upward 1/2 its height
    sphere.position.y = 1;
    // Built-in 'ground' shape.
    const ground = BABYLON.MeshBuilder.CreateGround("ground", 
        {width: 6, height: 6}, 
        scene);
    return scene;
};