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效果演示：文末获取源码
代码目录：
主要代码实现：
CSS样式：
body {background-color: #326696;margin: 0px;overflow: hidden;font-family: Monospace;font-size: 13px;text-align: center;font-weight: bold;text-align: center;}a {color: #0078ff;}
HTML代码 :
<body><script type="text/javascript" src="js/ThreeWebGL.js"></script><script type="text/javascript" src="js/ThreeExtras.js"></script><script type="text/javascript" src="js/Detector.js"></script><script type="text/javascript" src="js/RequestAnimationFrame.js"></script><script id="vs" type="x-shader/x-vertex">varying vec2 vUv; void main() { vUv = uv; gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 ); }</script><script id="fs" type="x-shader/x-fragment">uniform sampler2D map; uniform vec3 fogColor; uniform float fogNear; uniform float fogFar; varying vec2 vUv; void main() { float depth = gl_FragCoord.z / gl_FragCoord.w; float fogFactor = smoothstep( fogNear, fogFar, depth ); gl_FragColor = texture2D(map, vUv ); gl_FragColor.w *= pow( gl_FragCoord.z, 20.0 ); gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor ); }</script><script type="text/javascript">if (!Detector.webgl) Detector.addGetWebGLMessage();// Bg gradientvar canvas = document.createElement('canvas');canvas.width = 32;canvas.height = window.innerHeight;var context = canvas.getContext('2d');var gradient = context.createLinearGradient(0, 0, 0, canvas.height);gradient.addColorStop(0, "#1e4877");gradient.addColorStop(0.5, "#4584b4");context.fillStyle = gradient;context.fillRect(0, 0, canvas.width, canvas.height);document.body.style.background = 'url(' + canvas.toDataURL('image/png') + ')';// Cloudsvar container;var camera, scene, renderer, sky, mesh, geometry, material,i, h, color, colors = [],sprite, size, x, y, z;var mouseX = 0,mouseY = 0;var start_time = new Date().getTime();var windowHalfX = window.innerWidth / 2;var windowHalfY = window.innerHeight / 2;init();animate();function init() {container = document.createElement('div');document.body.appendChild(container);camera = new THREE.Camera(30, window.innerWidth / window.innerHeight, 1, 3000);camera.position.z = 6000;scene = new THREE.Scene();geometry = new THREE.Geometry();var texture = THREE.ImageUtils.loadTexture('cloud10.png');texture.magFilter = THREE.LinearMipMapLinearFilter;texture.minFilter = THREE.LinearMipMapLinearFilter;var fog = new THREE.Fog(0x4584b4, -100, 3000);material = new THREE.MeshShaderMaterial({uniforms: {"map": {type: "t",value: 2,texture: texture},"fogColor": {type: "c",value: fog.color},"fogNear": {type: "f",value: fog.near},"fogFar": {type: "f",value: fog.far},},vertexShader: document.getElementById('vs').textContent,fragmentShader: document.getElementById('fs').textContent,depthTest: false});var plane = new THREE.Mesh(new THREE.Plane(64, 64));for (i = 0; i < 8000; i++) {plane.position.x = Math.random() * 1000 - 500;plane.position.y = -Math.random() * Math.random() * 200 - 15;plane.position.z = i;plane.rotation.z = Math.random() * Math.PI;plane.scale.x = plane.scale.y = Math.random() * Math.random() * 1.5 + 0.5;GeometryUtils.merge(geometry, plane);}mesh = new THREE.Mesh(geometry, material);scene.addObject(mesh);mesh = new THREE.Mesh(geometry, material);mesh.position.z = -8000;scene.addObject(mesh);renderer = new THREE.WebGLRenderer({antialias: false});renderer.setSize(window.innerWidth, window.innerHeight);container.appendChild(renderer.domElement);document.addEventListener('mousemove', onDocumentMouseMove, false);window.addEventListener('resize', onWindowResize, false);}function onDocumentMouseMove(event) {mouseX = (event.clientX - windowHalfX) * 0.25;mouseY = (event.clientY - windowHalfY) * 0.15;}function onWindowResize(event) {camera.aspect = window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth, window.innerHeight);}function animate() {requestAnimationFrame(animate);render();}function render() {position = ((new Date().getTime() - start_time) * 0.03) % 8000;camera.position.x += (mouseX - camera.target.position.x) * 0.01;camera.position.y += (-mouseY - camera.target.position.y) * 0.01;camera.position.z = -position + 8000;camera.target.position.x = camera.position.x;camera.target.position.y = camera.position.y;camera.target.position.z = camera.position.z - 1000;renderer.render(scene, camera);}</script></body>
上面的js文件需要引入
源码获取
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