SOLAR SYSTEM (0.3)

// You have to create a function called createScene. This function must return a BABYLON.Scene object
// You can reference the following variables: scene, canvas
// You must at least define a camera
// More info here: https://github.com/BabylonJS/Babylon.js/wiki/The-Playground

var createScene = function() {
	var scene = new BABYLON.Scene(engine);
	var camera = new BABYLON.ArcRotateCamera("Camera", 0, Math.PI / 2, 12, BABYLON.Vector3.Zero(), scene);
	camera.attachControl(canvas, false);



//Luces
var light0 = new BABYLON.PointLight("Omni0", new BABYLON.Vector3(0, 0, 0), scene);
light0.diffuse = new BABYLON.Color3(1, 01, 01);
light0.specular = new BABYLON.Color3(1, 1, 1);
var light0 = new BABYLON.HemisphericLight("Hemi0", new BABYLON.Vector3(0, 1, 0), scene);





// Variables planetas
    var sol = BABYLON.Mesh.CreateSphere('sphere1', 16, 22, scene);
	var mercurio = BABYLON.Mesh.CreateSphere('sphere1', 16, 2, scene);
    var venus = BABYLON.Mesh.CreateSphere('sphere1', 6, 5, scene);

	// Posiciones iniciales
	sol.position.x = 0
	sol.position.y = 6.5
	mercurio.position.x = 0
	mercurio.position.y = 0
    venus.position.y =0
	venus.position.x=0

// Animacion MERCURIO
	var alpha = 0;
	scene.registerBeforeRender(function () {
		mercurio.rotation.x += 0.01;
		mercurio.rotation.z += 0.02;
		mercurio.position = new BABYLON.Vector3(Math.cos(alpha) *20, 10, Math.sin(alpha) * 20);
		alpha += 0.01;

	});


	//Animacion Venus
		var beta = 0;
	    scene.registerBeforeRender(function () {
		venus.rotation.x += 0.01;
		venus.rotation.z += 0.02;
		venus.position = new BABYLON.Vector3(Math.cos(beta) *30, 20, Math.sin(beta) * 30);
		beta += 0.02;

	});


	//Animacion Tierra






	return scene;
};