想信大家看完前面四节three.js应该对three.js 有了一个大致的了解。
这一节，就给大家带来一个实例。
效果截图如下：
在线地址：http://www.17sucai.com//preview/703246/2018-01-09/demo11/index.html
人帅话不多，上代码，代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>erath - three.js</title>
<script src="js/three.js"></script>
<script src="js/TrackballControls.js"></script>
<script src="js/jquery.min.js"></script>
</head>
<style>
* {
padding: 0px;
margin: 0px;
}
html,body,.main {
100%;
height: 100%;
overflow: hidden;
}
.main {
position: relative;
}
.div {
float: left;
calc(100% / 3);
height: calc(100% / 3);
cursor: move;
}
.btn {
position: absolute;
left: 0;
right: 0;
bottom: 50px;
margin: 0 auto;
20%;
height: 30px;
line-height: 30px;
text-align: center;
color: white;
letter-spacing: 20px;
background: rgba(139,139,139,.8);
cursor: pointer;
display: none;
}
</style>
<body>
<div class="main">
<div class="div div1"></div>
<div class="div div2"></div>
<div class="div div3"></div>
<div class="div div4"></div>
<div class="div div5"></div>
<div class="div div6"></div>
<div class="div div7"></div>
<div class="div div8"></div>
<div class="div div9"></div>
<div class="btn">返回</div>
</div>
</body>
</html>
<script>
function Three(className) {
this.off;
this.width = $(className).width();
this.height = $(className).height();
this.renderer = new THREE.WebGLRenderer({
antialias : true //开启锯齿，默认是false
});
this.renderer.setSize(this.width, this.height); // 给渲染区域设置宽高
this.renderer.setClearColor("white"); // 设置背景色
$(className).append(this.renderer.domElement);
}
Three.prototype = {
init:function(url) {
var that = this;
this.scence = new THREE.Scene(); // 创建舞台
// 设置视角及参数
this.camera = new THREE.PerspectiveCamera(45, this.width / this.height, 1, 10000);
this.camera.position.set(0,0,200);
this.camera.lookAt(new THREE.Vector3(0, 0, 0));
this.controls = new THREE.TrackballControls(this.camera, this.renderer.domElement);
// this.controls.minDistance = 200;
this.controls.rotateSpeed = 1.0;
this.controls.zoomSpeed = 1.2;
this.controls.panSpeed = 0.8;
this.controls.noZoom = true;
this.controls.noPan = true;
this.controls.staticMoving = true;
this.controls.dynamicDampingFactor = 0.3;
// 设置灯光及参数
this.light = new THREE.AmbientLight(0xDDDDDD);
this.light.position.set(100, 100, 200);
this.scence.add(this.light);
// 创建角色
var circle = new THREE.SphereGeometry(900,50,50);
var texture = new THREE.TextureLoader();
var material = new THREE.MeshBasicMaterial();
// 给circle添加背景图片
material.map = texture.load("images/"+url,function(){
that.renderer.render(that.scence, that.camera);
});
that.mesh = new THREE.Mesh(circle,material);
that.mesh.position.set(0,0,-260);
that.mesh.scale.x = -1;
that.scence.add(that.mesh);
},
animate:function() {
this.off = requestAnimationFrame(this.animate.bind(this)); //bind(this) 使函数中的this指向构造函数
this.mesh.rotation.y += 0.003;
this.controls.target.copy( this.mesh.position );
this.controls.update();
this.renderer.render(this.scence, this.camera);
},
turnAnimate:function(a) {
if(a) {this.animate();
}else {
cancelAnimationFrame(this.off); // 停止动画，节约资源，优化用户体验
}
},
start:function() {
this.animate();
}
}
function Dothree() {
var data = [
[".div1",".div2",".div3",".div4",".div5",".div6",".div7",".div8",".div9"],
["three","three1","three2","three3","three4","three5","three6","three7","three8","three9"],
["164409shep99yc3gm01c99.jpg","8748605_144012597000_2.jpg","1430474913_386400657.jpg","2294472375_24a3b8ef46_o.jpg","hefei.jpg","shinei2.jpg","shinei3.jpg","shinei4.jpg","t01e4a292285aaa7eaf.jpg"]
];
var turn = 1;
// 进入操作
$(".div").click(function() {
var index = $(this).index();
for(var j = 0, L = data[0].length; j < L; j ++) {
data[1][j].turnAnimate(false);
}
$(".div").hide();
data[1][index].turnAnimate(true);
if(turn) {
$(this).css({"width":"100%","height":"100%"}).show(500);
turn = 0;
}else {
$(this).css({"width":"100%","height":"100%"}).show();
}
$(this).children("canvas").css({"width":"100%","height":"100%"});
$(".btn").slideDown(1000);
});
// 返回操作
$(".btn").click(function() {
$(this).slideUp(500);
$(".div").css({"width":"calc(100% / 3)","height":"calc(100% / 3)"}).show(500);
for(var j = 0, L = data[0].length; j < L; j ++) {
data[1][j].turnAnimate(true);
}
});
for(var i = 0,l =data[0].length; i < l; i++) {
data[1][i] = new Three(data[0][i]);
data[1][i].init(data[2][i]);
data[1][i].start();
}
}
Dothree();
</script>
源代码，上面有大部分的注释。今天就讲到这里了，下次再会。