3D元素周期表源码（已加注释）及分析
废话不多说，直接上源码
需要几个js文件，记得加上
<script src="js/three.min.js">script>
<script src="js/tween.min.js">script>
<script src="js/TrackballControls.js">script>
<script src="js/CSS3DRenderer.js">script>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>3D-元素周期表title>
<script>
function fangdajing() {
var sc = document.creatElement('style');
sc.innerHTML="
"
}
script>
<style>
html,
body {
height: 100%;
}
body {
background-color: #000000;
margin: 0;
font-family: Helvetica, sans-serif;
;
overflow: hidden;
}
a {
color: #ffffff;
}
#info {
position: absolute;
width: 100%;
color: #ffffff;
padding: 5px;
font-family: Monospace;
font-size: 13px;
font-weight: bold;
text-align: center;
z-index: 1;
}
#menu {
position: absolute;
bottom: 20px;
width: 100%;
text-align: center;
font-family: verdana, Tahoma, Arial, Hei, "Microsoft Yahei", SimHei;
}
.element {
width: 120px;
height: 160px;
box-shadow: 0px 0px 12px rgba(0, 255, 255, 0.5);
border: 1px solid rgba(127, 255, 255, 0.25);
text-align: center;
cursor: default;
}
.element .number {
position: absolute;
top: 20px;
right: 20px;
font-size: 12px;
color: rgba(127, 255, 255, 0.75);
}
.element .symbol {
position: absolute;
top: 40px;
left: 0px;
right: 0px;
font-size: 60px;
font-weight: bold;
color: rgba(255, 255, 255, 0.75);
text-shadow: 0 0 10px rgba(0, 255, 255, 0.95);
}
.element .details {
position: absolute;
bottom: 15px;
left: 0px;
right: 0px;
font-size: 12px;
color: rgba(127, 255, 255, 0.75);
}
button {
color: rgba(127, 255, 255, 0.75);
background: transparent;
outline: 1px solid rgba(127, 255, 255, 0.75);
border: 0px;
padding: 5px 10px;
cursor: pointer;
}
button:hover {
background-color: rgba(0, 255, 255, 0.5);
}
button:active {
color: #000000;
background-color: rgba(0, 255, 255, 0.75);
}
style>
head>
<body>
<script src="js/three.min.js">script>
<script src="js/tween.min.js">script>
<script src="js/TrackballControls.js">script>
<script src="js/CSS3DRenderer.js">script>
<div id="container">div>
<div id="info">3D-元素周期表div>
<div id="menu">
<button id="table">表面button>
<button id="sphere">球体button>
<button id="helix">螺旋button>
<button id="grid">网格button>
div>
<script>
//这里是定义table元素放入展示的内容,在后面再对table进行解析
var table = [
"H", "飞翔的企鹅", "1.00794", 1, 1,
"He", "Helium", "4.002602", 18, 1,
"Li", "Lithium", "#6.941", 1, 2,
"Be", "Beryllium", "9.012182", 2, 2,
"B", "Boron", "#10.811", 13, 2,
"C", "Carbon", "#12.0107", 14, 2,
"N", "Nitrogen", "#14.0067", 15, 2,
"O", "Oxygen", "#15.9994", 16, 2,
"F", "Fluorine", "18.9984032", 17, 2,
"Ne", "Neon", "#20.1797", 18, 2,
"Na", "Sodium", "22.98976...", 1, 3,
"Mg", "Magnesium", "#24.305", 2, 3,
"Al", "Aluminium", "26.9815386", 13, 3,
"Si", "Silicon", "#28.0855", 14, 3,
"P", "Phosphorus", "30.973762", 15, 3,
"S", "Sulfur", "#32.065", 16, 3,
"Cl", "Chlorine", "#35.453", 17, 3,
"Ar", "Argon", "#39.948", 18, 3,
"K", "Potassium", "#39.948", 1, 4,
"Ca", "Calcium", "#40.078", 2, 4,
"Sc", "Scandium", "44.955912", 3, 4,
"Ti", "Titanium", "#47.867", 4, 4,
"V", "Vanadium", "#50.9415", 5, 4,
"Cr", "Chromium", "#51.9961", 6, 4,
"Mn", "Manganese", "54.938045", 7, 4,
"Fe", "Iron", "#55.845", 8, 4,
"Co", "Cobalt", "58.933195", 9, 4,
"Ni", "Nickel", "#58.6934", 10, 4,
"Cu", "Copper", "#63.546", 11, 4,
"Zn", "Zinc", "#65.38", 12, 4,
"Ga", "Gallium", "#69.723", 13, 4,
"Ge", "Germanium", "#72.63", 14, 4,
"As", "Arsenic", "#74.9216", 15, 4,
"Se", "Selenium", "#78.96", 16, 4,
"Br", "Bromine", "#79.904", 17, 4,
"Kr", "Krypton", "#83.798", 18, 4,
"Rb", "Rubidium", "#85.4678", 1, 5,
"Sr", "Strontium", "#87.62", 2, 5,
"Y", "Yttrium", "88.90585", 3, 5,
"Zr", "Zirconium", "#91.224", 4, 5,
"Nb", "Niobium", "92.90628", 5, 5,
"Mo", "Molybdenum", "#95.96", 6, 5,
"Tc", "Technetium", "(98)", 7, 5,
"Ru", "Ruthenium", "#101.07", 8, 5,
"Rh", "Rhodium", "#102.9055", 9, 5,
"Pd", "Palladium", "#106.42", 10, 5,
"Ag", "Silver", "#107.8682", 11, 5,
"Cd", "Cadmium", "#112.411", 12, 5,
"In", "Indium", "#114.818", 13, 5,
"Sn", "Tin", "#118.71", 14, 5,
"Sb", "Antimony", "#121.76", 15, 5,
"Te", "Tellurium", "127.6", 16, 5,
"I", "Iodine", "126.90447", 17, 5,
"Xe", "Xenon", "#131.293", 18, 5,
"Cs", "Caesium", "#132.9054", 1, 6,
"Ba", "Barium", "#132.9054", 2, 6,
"La", "Lanthanum", "138.90547", 4, 9,
"Ce", "Cerium", "#140.116", 5, 9,
"Pr", "Praseodymium", "140.90765", 6, 9,
"Nd", "Neodymium", "#144.242", 7, 9,
"Pm", "Promethium", "(145)", 8, 9,
"Sm", "Samarium", "#150.36", 9, 9,
"Eu", "Europium", "#151.964", 10, 9,
"Gd", "Gadolinium", "#157.25", 11, 9,
"Tb", "Terbium", "158.92535", 12, 9,
"Dy", "Dysprosium", "162.5", 13, 9,
"Ho", "Holmium", "164.93032", 14, 9,
"Er", "Erbium", "#167.259", 15, 9,
"Tm", "Thulium", "168.93421", 16, 9,
"Yb", "Ytterbium", "#173.054", 17, 9,
"Lu", "Lutetium", "#174.9668", 18, 9,
"Hf", "Hafnium", "#178.49", 4, 6,
"Ta", "Tantalum", "180.94788", 5, 6,
"W", "Tungsten", "#183.84", 6, 6,
"Re", "Rhenium", "#186.207", 7, 6,
"Os", "Osmium", "#190.23", 8, 6,
"Ir", "Iridium", "#192.217", 9, 6,
"Pt", "Platinum", "#195.084", 10, 6,
"Au", "Gold", "196.966569", 11, 6,
"Hg", "Mercury", "#200.59", 12, 6,
"Tl", "Thallium", "#204.3833", 13, 6,
"Pb", "Lead", "207.2", 14, 6,
"Bi", "Bismuth", "#208.9804", 15, 6,
"Po", "Polonium", "(209)", 16, 6,
"At", "Astatine", "(210)", 17, 6,
"Rn", "Radon", "(222)", 18, 6,
"Fr", "Francium", "(223)", 1, 7,
"Ra", "Radium", "(226)", 2, 7,
"Ac", "Actinium", "(227)", 4, 10,
"Th", "Thorium", "232.03806", 5, 10,
"Pa", "Protactinium", "#231.0588", 6, 10,
"U", "Uranium", "238.02891", 7, 10,
"Np", "Neptunium", "(237)", 8, 10,
"Pu", "Plutonium", "(244)", 9, 10,
"Am", "Americium", "(243)", 10, 10,
"Cm", "Curium", "(247)", 11, 10,
"Bk", "Berkelium", "(247)", 12, 10,
"Cf", "Californium", "(251)", 13, 10,
"Es", "Einstenium", "(252)", 14, 10,
"Fm", "Fermium", "(257)", 15, 10,
"Md", "Mendelevium", "(258)", 16, 10,
"No", "Nobelium", "(259)", 17, 10,
"Lr", "Lawrencium", "(262)", 18, 10,
"Rf", "Rutherfordium", "(267)", 4, 7,
"Db", "Dubnium", "(268)", 5, 7,
"Sg", "Seaborgium", "(271)", 6, 7,
"Bh", "Bohrium", "(272)", 7, 7,
"Hs", "Hassium", "(270)", 8, 7,
"Mt", "Meitnerium", "(276)", 9, 7,
"Ds", "Darmstadium", "(281)", 10, 7,
"Rg", "Roentgenium", "(280)", 11, 7,
"Cn", "Copernicium", "(285)", 12, 7,
"Uut", "Unutrium", "(284)", 13, 7,
"Fl", "Flerovium", "(289)", 14, 7,
"Uup", "Ununpentium", "(288)", 15, 7,
"Lv", "Livermorium", "(293)", 16, 7,
"Uus", "Ununseptium", "(294)", 17, 7,
"Uuo", "Ununoctium", "(294)", 18, 7
];
var camera, scene, renderer;
var controls;
var objects = [];
var targets = {
table: [],
sphere: [],
helix: [],
grid: []
};
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 1, 10000);
//透视投影相机,PerspectiveCamera(fov, aspect, near, far)
// - fov 可视角度
// - aspect 为width/height,通常设置为canvas元素的高宽比。
// - near近端距离
// - far远端距离
//只有离相机的距离大于near值，小于far值，且在相机的可视角度之内，才能被相机投影到。
camera.position.z = 3000;
//3000是camera的竖直高度,可以理解为值越大可见度越大
scene = new THREE.Scene();
// table 表格
//这里是对table表格里的数据进行解析,然后分配到每个div中构成模块
for (var i = 0; i < table.length; i += 5) {
var element = document.createElement('div');
element.className = 'element';
element.style.backgroundColor = 'rgba(0,127,127,' + (Math.random() * 0.5 + 0.25) + ')';
var number = document.createElement('div');
number.className = 'number';
number.textContent = (i / 5) + 1;
element.appendChild(number);
var symbol = document.createElement('div');
symbol.className = 'symbol';
symbol.textContent = table[i];
element.appendChild(symbol);
var details = document.createElement('div');
details.className = 'details';
details.innerHTML = table[i + 1] + '
' + table[i + 2];
element.appendChild(details);
var object = new THREE.CSS3DObject(element);
object.position.x = Math.random() * 4000 - 2000;
object.position.y = Math.random() * 4000 - 2000;
object.position.z = Math.random() * 4000 - 2000;
scene.add(object);
objects.push(object);
var object = new THREE.Object3D();
object.position.x = (table[i + 3] * 140) - 1330;
object.position.y = -(table[i + 4] * 180) + 990;
targets.table.push(object);
}
// sphere 球
var vector = new THREE.Vector3();
for (var i = 0, l = objects.length; i < l; i++) {
var phi = Math.acos(-1 + (2 * i) / l);
var theta = Math.sqrt(l * Math.PI) * phi;
var object = new THREE.Object3D();
object.position.x = 800 * Math.cos(theta) * Math.sin(phi);
object.position.y = 800 * Math.sin(theta) * Math.sin(phi);
object.position.z = 800 * Math.cos(phi);
vector.copy(object.position).multiplyScalar(2);
object.lookAt(vector);
targets.sphere.push(object);
}
// helix 螺旋
var vector = new THREE.Vector3();
for (var i = 0, l = objects.length; i < l; i++) {
var phi = i * 0.175 + Math.PI;
var object = new THREE.Object3D();
object.position.x = 900 * Math.sin(phi);
object.position.y = -(i * 8) + 450;
object.position.z = 900 * Math.cos(phi);
vector.x = object.position.x * 2;
vector.y = object.position.y;
vector.z = object.position.z * 2;
object.lookAt(vector);
targets.helix.push(object);
}
// grid 网格
for (var i = 0; i < objects.length; i++) {
var object = new THREE.Object3D();
object.position.x = ((i % 5) * 400) - 800;
object.position.y = (-(Math.floor(i / 5) % 5) * 400) + 800;
object.position.z = (Math.floor(i / 25)) * 1000 - 2000;
targets.grid.push(object);
}
//
renderer = new THREE.CSS3DRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.domElement.style.position = 'absolute';
document.getElementById('container').appendChild(renderer.domElement);
//
controls = new THREE.TrackballControls(camera, renderer.domElement);
controls.rotateSpeed = 0.5; //旋转速度
controls.minDistance = 500; //最小距离
controls.maxDistance = 10000; //最大距离
controls.addEventListener('change', render);
var button = document.getElementById('table');
button.addEventListener('click', function(event) {
transform(targets.table, 2000); //展示表格
}, false);
var button = document.getElementById('sphere');
button.addEventListener('click', function(event) {
transform(targets.sphere, 2000); //展示球
}, false);
var button = document.getElementById('helix');
button.addEventListener('click', function(event) {
transform(targets.helix, 2000); //展示螺旋
}, false);
var button = document.getElementById('grid');
button.addEventListener('click', function(event) {
transform(targets.grid, 2000); //展示网格
}, false);
transform(targets.table, 5000);
//
window.addEventListener('resize', onWindowResize, false);
}
function transform(targets, duration) {
//targets对象,duration持续时间
TWEEN.removeAll();
for (var i = 0; i < objects.length; i++) {
var object = objects[i];
var target = targets[i];
new TWEEN.Tween(object.position)
.to({
x: target.position.x,
y: target.position.y,
z: target.position.z
}, Math.random() * duration + duration)
.easing(TWEEN.Easing.Exponential.InOut)
.start();
new TWEEN.Tween(object.rotation)
.to({
x: target.rotation.x,
y: target.rotation.y,
z: target.rotation.z
}, Math.random() * duration + duration)
.easing(TWEEN.Easing.Exponential.InOut)
.start();
}
new TWEEN.Tween(this)
.to({}, duration * 2)
.onUpdate(render)
.start();
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
render();
}
function animate() {
requestAnimationFrame(animate);
TWEEN.update();
controls.update();
}
function render() {
renderer.render(scene, camera);
}
script>
body>
html>
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3.3 camera的合理使用
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