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Three.js Basic examples(1)

2016-07-31 10:48 176 查看
例子来源：http://stemkoski.github.io/Three.js/Materials-Solid.html

主要是把一些不理解的语句加上备注。
<!doctype html>
<html lang="en">
<head>
<title>Materials - Solid (Three.js)</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link rel=stylesheet href="css/base.css"/>
</head>
<body>

<script src="js/Three.js"></script>
<script src="js/Detector.js"></script>
<script src="js/Stats.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/THREEx.KeyboardState.js"></script>
<script src="js/THREEx.FullScreen.js"></script>
<script src="js/THREEx.WindowResize.js"></script>

<!-- jQuery code to display an information button and box when clicked. -->
<script src="js/jquery-1.9.1.js"></script>
<script src="js/jquery-ui.js"></script>
<link rel=stylesheet href="css/jquery-ui.css" />
<link rel=stylesheet href="css/info.css"/>
<script src="js/info.js"></script>
<div id="infoButton"></div>
<div id="infoBox" title="Demo Information">
This three.js demo is part of a collection at
<a href="http://stemkoski.github.io/Three.js/">http://stemkoski.github.io/Three.js/</a>
</div>
<!-- ------------------------------------------------------------ -->

<div id="ThreeJS" style="z-index: 1; position: absolute; left:0px; top:0px"></div>
<script>
/*
Three.js "tutorials by example"
Author: Lee Stemkoski
Date: July 2013 (three.js v59dev)
*/

// MAIN

// standard global variables
var container, scene, camera, renderer, controls, stats;
var keyboard = new THREEx.KeyboardState();
var clock = new THREE.Clock();
// custom global variables自定义的全局变量
var cube;

init();
animate();

// FUNCTIONS
function init()
{
// SCENE
scene = new THREE.Scene();
// CAMERA
var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
scene.add(camera);
camera.position.set(0,150,400);
camera.lookAt(scene.position);  //将相机的中心点指向到scene.position所指向的位置

// RENDERER
if ( Detector.webgl )
renderer = new THREE.WebGLRenderer( {antialias:true} );
else
renderer = new THREE.CanvasRenderer();
renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
container = document.getElementById( 'ThreeJS' );
container.appendChild( renderer.domElement );
// EVENTS
THREEx.WindowResize(renderer, camera);
THREEx.FullScreen.bindKey({ charCode : 'm'.charCodeAt(0) });
// CONTROLS
controls = new THREE.OrbitControls( camera, renderer.domElement );
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.bottom = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
// LIGHT
var light = new THREE.PointLight(0xffffff);
light.position.set(0,150,100);
scene.add(light);
// FLOOR
var floorTexture = new THREE.ImageUtils.loadTexture( 'images/checkerboard.jpg' );
floorTexture.wrapS = floorTexture.wrapT = THREE.RepeatWrapping;
floorTexture.repeat.set( 10, 10 );
var floorMaterial = new THREE.MeshBasicMaterial( { map: floorTexture, side: THREE.DoubleSide } );
var floorGeometry = new THREE.PlaneGeometry(1000, 1000, 10, 10);
var floor = new THREE.Mesh(floorGeometry, floorMaterial);
floor.position.y = -0.5;
floor.rotation.x = Math.PI / 2;
scene.add(floor);
// SKYBOX/FOG
var skyBoxGeometry = new THREE.CubeGeometry( 10000, 10000, 10000 );
var skyBoxMaterial = new THREE.MeshBasicMaterial( { color: 0x9999ff, side: THREE.BackSide } );
var skyBox = new THREE.Mesh( skyBoxGeometry, skyBoxMaterial );
// scene.add(skyBox);
scene.fog = new THREE.FogExp2( 0x9999ff, 0.00025 );

////////////
// CUSTOM //
////////////

// Sphere parameters: radius, segments along width, segments along height
var sphereGeom =  new THREE.SphereGeometry( 50, 32, 16 );

// Three types of materials, each reacts differently to light.
var darkMaterial = new THREE.MeshBasicMaterial( { color: 0x000088 } );
var darkMaterialL = new THREE.MeshLambertMaterial( { color: 0x000088 } );
var darkMaterialP = new THREE.MeshPhongMaterial( { color: 0x000088 } );

// Creating three spheres to illustrate the different materials.
// Note the clone() method used to create additional instances
//    of the geometry from above.
var sphere =
af0b
new THREE.Mesh( sphereGeom.clone(), darkMaterial );
sphere.position.set(-150, 50, 0);
scene.add( sphere );

var sphere = new THREE.Mesh( sphereGeom.clone(), darkMaterialL );
sphere.position.set(0, 50, 0);
scene.add( sphere );

var sphere = new THREE.Mesh( sphereGeom.clone(), darkMaterialP );
sphere.position.set(150, 50, 0);
scene.add( sphere );

// create a small sphere to show position of light
var lightbulb = new THREE.Mesh(
new THREE.SphereGeometry( 10, 16, 8 ),
new THREE.MeshBasicMaterial( { color: 0xffaa00 } )
);
scene.add( lightbulb );
lightbulb.position = light.position;
}

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

function update()
{
if ( keyboard.pressed("z") )
{
// do something
}

controls.update();
stats.update();
}

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

</script>

</body>
</html>
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