Babylon.js/Samples/Scenes/Customs/lights_test.js

var CreateLightsTestScene = function (engine) {
    var scene = new BABYLON.Scene(engine);
    var camera = new BABYLON.ArcRotateCamera("Camera", 0, 0, 10, BABYLON.Vector3.Zero(), scene);
    var light0 = new BABYLON.PointLight("Omni0", new BABYLON.Vector3(0, 10, 0), scene);
    var light1 = new BABYLON.PointLight("Omni1", new BABYLON.Vector3(0, -10, 0), scene);
    var light2 = new BABYLON.PointLight("Omni2", new BABYLON.Vector3(10, 0, 0), scene);
    var light3 = new BABYLON.DirectionalLight("Dir0", new BABYLON.Vector3(1, -1, 0), scene);
    var material = new BABYLON.StandardMaterial("kosh", scene);
    var sphere = BABYLON.Mesh.CreateSphere("Sphere", 16, 3, scene);

    camera.setPosition(new BABYLON.Vector3(-10, 10, 0));

    light3.parent = camera;
    
    // Creating light sphere
    var lightSphere0 = BABYLON.Mesh.CreateSphere("Sphere0", 16, 0.5, scene);
    var lightSphere1 = BABYLON.Mesh.CreateSphere("Sphere1", 16, 0.5, scene);
    var lightSphere2 = BABYLON.Mesh.CreateSphere("Sphere2", 16, 0.5, scene);
    
    lightSphere0.material = new BABYLON.StandardMaterial("red", scene);
    lightSphere0.material.diffuseColor = new BABYLON.Color3(0, 0, 0);
    lightSphere0.material.specularColor = new BABYLON.Color3(0, 0, 0);
    lightSphere0.material.emissiveColor = new BABYLON.Color3(1, 0, 0);

    lightSphere1.material = new BABYLON.StandardMaterial("green", scene);
    lightSphere1.material.diffuseColor = new BABYLON.Color3(0, 0, 0);
    lightSphere1.material.specularColor = new BABYLON.Color3(0, 0, 0);
    lightSphere1.material.emissiveColor = new BABYLON.Color3(0, 1, 0);

    lightSphere2.material = new BABYLON.StandardMaterial("blue", scene);
    lightSphere2.material.diffuseColor = new BABYLON.Color3(0, 0, 0);
    lightSphere2.material.specularColor = new BABYLON.Color3(0, 0, 0);
    lightSphere2.material.emissiveColor = new BABYLON.Color3(0, 0, 1);

    // Sphere material
    material.diffuseColor = new BABYLON.Color3(1, 1, 1);
    sphere.material = material;

    // Lights colors
    light0.diffuse = new BABYLON.Color3(1, 0, 0);
    light0.specular = new BABYLON.Color3(1, 0, 0);
    
    light1.diffuse = new BABYLON.Color3(0, 1, 0);
    light1.specular = new BABYLON.Color3(0, 1, 0);
    
    light2.diffuse = new BABYLON.Color3(0, 0, 1);
    light2.specular = new BABYLON.Color3(0, 0, 1);
    
    light3.diffuse = new BABYLON.Color3(1, 1, 1);
    light3.specular = new BABYLON.Color3(1, 1, 1);
    
    // Skybox
    var skybox = BABYLON.Mesh.CreateBox("skyBox", 100.0, scene);
    var skyboxMaterial = new BABYLON.StandardMaterial("skyBox", scene);
    skyboxMaterial.backFaceCulling = false;
    skyboxMaterial.reflectionTexture = new BABYLON.CubeTexture("Scenes/Customs/skybox/skybox", scene);
    skyboxMaterial.reflectionTexture.coordinatesMode = BABYLON.Texture.SKYBOX_MODE;
    skyboxMaterial.diffuseColor = new BABYLON.Color3(0, 0, 0);
    skyboxMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
    skybox.material = skyboxMaterial;
    skybox.infiniteDistance = true;

    // Animations
    var alpha = 0;
    scene.registerBeforeRender(function () {
        light0.position = new BABYLON.Vector3(10 * Math.sin(alpha), 0, 10 * Math.cos(alpha));
        light1.position = new BABYLON.Vector3(10 * Math.sin(alpha), 0, -10 * Math.cos(alpha));
        light2.position = new BABYLON.Vector3(10 * Math.cos(alpha), 0, 10 * Math.sin(alpha));

        lightSphere0.position = light0.position;
        lightSphere1.position = light1.position;
        lightSphere2.position = light2.position;

        alpha += 0.01;
    });

    return scene;
};