var container, scene, camera, renderer, controls, stats;
var keyboard = new THREEx.KeyboardState();
var clock = new THREE.Clock();

init();
animate();

function init() 
{
	scene = new THREE.Scene();
  
  var sphereGeometry = new THREE.IcosahedronGeometry( 30, 3 ); 
  
  for (let i = 0; i < sphereGeometry.attributes.position.count; i++) {
    const x = sphereGeometry.attributes.position.getX(i);
    const y = sphereGeometry.attributes.position.getY(i);
    const z = sphereGeometry.attributes.position.getZ(i);

    sphereGeometry.attributes.position.setXYZ(i, x, y, z);
  }

  sphereGeometry.computeVertexNormals();
  
	var sphereMaterial = new THREE.MeshLambertMaterial( {color: 0x8888ff} ); 
	var sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);
	scene.add(sphere);
  
  

	var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;	
	// camera attributes
	var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
	// set up camera
	camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
	// add the camera to the scene
	scene.add(camera);
	// the camera defaults to position (0,0,0)
	// 	so pull it back (z = 400) and up (y = 100) and set the angle towards the scene origin
	camera.position.set(0,100,100);
	
	//////////////
	// RENDERER //
	//////////////
	
	// create and start the renderer; choose antialias setting.
	if ( Detector.webgl )
		renderer = new THREE.WebGLRenderer( {antialias:true} );
	else
		renderer = new THREE.CanvasRenderer(); 
	
	renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
	
	// attach div element to variable to contain the renderer
	container = document.getElementById( 'ThreeJS' );
	// alternatively: to create the div at runtime, use:
	//   container = document.createElement( 'div' );
	//    document.body.appendChild( container );
	
	// attach renderer to the container div
	container.appendChild( renderer.domElement );
	
	////////////
	// EVENTS //
	////////////

	// automatically resize renderer
	THREEx.WindowResize(renderer, camera);
	// toggle full-screen on given key press
	THREEx.FullScreen.bindKey({ charCode : 'm'.charCodeAt(0) });
	
	controls = new THREE.OrbitControls( camera, renderer.domElement );
	
	stats = new Stats();
	stats.domElement.style.position = 'absolute';
	stats.domElement.style.bottom = '0px';
	stats.domElement.style.zIndex = 100;
	container.appendChild( stats.domElement );
	
	var light = new THREE.PointLight(0xffffff);
	light.position.set(0,250,0);
	scene.add(light);
	var ambientLight = new THREE.AmbientLight(0x111111);
	// scene.add(ambientLight);
	
	
  
  var loader = new THREE.TextureLoader();
  loader.crossOrigin = "";
  var floorTexture = loader.load("https://stemkoski.github.io/Three.js/images/checkerboard.jpg");
  
	floorTexture.wrapS = floorTexture.wrapT = THREE.RepeatWrapping; 
	floorTexture.repeat.set( 10, 10 );
	// DoubleSide: render texture on both sides of mesh
	var floorMaterial = new THREE.MeshBasicMaterial( { map: floorTexture, side: THREE.DoubleSide } );
	var floorGeometry = new THREE.PlaneGeometry(1000, 1000, 1, 1);
	var floor = new THREE.Mesh(floorGeometry, floorMaterial);
	floor.position.y = -40;
	floor.rotation.x = Math.PI / 2;
	scene.add(floor);
	
	/////////
	// SKY //
	/////////
	
	// recommend either a skybox or fog effect (can't use both at the same time) 
	// without one of these, the scene's background color is determined by webpage background

	// make sure the camera's "far" value is large enough so that it will render the skyBox!
	var skyBoxGeometry = new THREE.BoxGeometry( 10000, 10000, 10000 );
	// BackSide: render faces from inside of the cube, instead of from outside (default).
	var skyBoxMaterial = new THREE.MeshBasicMaterial( { color: 0x9999ff, side: THREE.BackSide } );
	var skyBox = new THREE.Mesh( skyBoxGeometry, skyBoxMaterial );
	// scene.add(skyBox);
	
	// fog must be added to scene before first render
	scene.fog = new THREE.FogExp2( 0x9999ff, 0.00025 );
}

function animate() 
{
    requestAnimationFrame( animate );
	render();		
	update();
}

function update()
{
	// delta = change in time since last call (in seconds)
	var delta = clock.getDelta(); 

	// functionality provided by THREEx.KeyboardState.js
	if ( keyboard.pressed("1") )
		document.getElementById('message').innerHTML = ' Have a nice day! - 1';	
	if ( keyboard.pressed("2") )
		document.getElementById('message').innerHTML = ' Have a nice day! - 2 ';	
		
	controls.update();
	stats.update();
}

function render() 
{	
	renderer.render( scene, camera );
}