技术分享：用JS实现的3D海浪涌动特效_three.js 如何让水面动起来-优快云博客

本文分享了如何使用ThreeJS库创建一个逼真的3D海浪动态背景，通过随机涌动和科幻感增强页面视觉体验。代码实现包括粒子系统、动画效果和触摸交互。

分享一个基于ThreeJS的3D海浪涌动特效，效果如下：

常可用于页面背景，3D效果，视觉观感很好，海浪会随机涌动，科幻感、技术感强烈。

代码说明

代码会引用ThreeJS库，版本号为56。注：必须是此版本。

页面背景色可在Body的style中自行调节。

<body style="background:#000000">

完整源码如下，直接保存为html文件即可使用。

也可对源码优化修改，以实现更好效果，如果不想修改后的源码泄露出去，可用JShaman对JS代码进行加密。

源码

<body style="background:#000000">

<script src="three.js" type="application/javascript"></script>

<div></div>

<script>

var SEPARATION = 100,

AMOUNTX = 100,

AMOUNTY = 70;

var container;

var camera, scene, renderer;

var particles, particle, count = 0;

var mouseX = 85,

mouseY = -342;

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.PerspectiveCamera(120, window.innerWidth / window.innerHeight, 1, 10000);

camera.position.z = 1000;

scene = new THREE.Scene();

particles = new Array();

var PI2 = Math.PI * 2;

var material = new THREE.ParticleCanvasMaterial({

color: 0xe1e1e1,

program: function(context) {

context.beginPath();

context.arc(0, 0, .6, 0, PI2, true);

context.fill();

}

});

var i = 0;

for (var ix = 0; ix < AMOUNTX; ix++) {

for (var iy = 0; iy < AMOUNTY; iy++) {

particle = particles[i++] = new THREE.Particle(material);

particle.position.x = ix * SEPARATION - ((AMOUNTX * SEPARATION) / 2);

particle.position.z = iy * SEPARATION - ((AMOUNTY * SEPARATION) / 2);

scene.add(particle);

}

}

renderer = new THREE.CanvasRenderer();

renderer.setSize(window.innerWidth, window.innerHeight);

container.appendChild(renderer.domElement);

document.addEventListener('mousemove', onDocumentMouseMove, false);

document.addEventListener('touchstart', onDocumentTouchStart, false);

document.addEventListener('touchmove', onDocumentTouchMove, false);

window.addEventListener('resize', onWindowResize, false);

}

function onWindowResize() {

windowHalfX = window.innerWidth / 2;

windowHalfY = window.innerHeight / 2;

camera.aspect = window.innerWidth / window.innerHeight;

camera.updateProjectionMatrix();

renderer.setSize(window.innerWidth, window.innerHeight);

}

function onDocumentMouseMove(event) {

mouseX = event.clientX - windowHalfX;

mouseY = event.clientY - windowHalfY;

}

function onDocumentTouchStart(event) {

if (event.touches.length === 1) {

event.preventDefault();

mouseX = event.touches[0].pageX - windowHalfX;

mouseY = event.touches[0].pageY - windowHalfY;

}

}

function onDocumentTouchMove(event) {

if (event.touches.length === 1) {

event.preventDefault();

mouseX = event.touches[0].pageX - windowHalfX;

mouseY = event.touches[0].pageY - windowHalfY;

}

}

function animate() {

requestAnimationFrame(animate);

render();

}

function render() {

camera.position.x += (mouseX - camera.position.x) * .05;

camera.position.y += (-mouseY - camera.position.y) * .05;

camera.lookAt(scene.position);

var i = 0;

for (var ix = 0; ix < AMOUNTX; ix++) {

for (var iy = 0; iy < AMOUNTY; iy++) {

particle = particles[i++];

particle.position.y = (Math.sin((ix + count) * 0.3) * 50) + (Math.sin((iy + count) * 0.5) * 50);

particle.scale.x = particle.scale.y = (Math.sin((ix + count) * 0.3) + 1) * 2 + (Math.sin((iy + count) * 0.5) + 1) * 2;

}

}

renderer.render(scene, camera);

count += 0.1;

}

</script>

<div>

<canvas style="width: 1440px; height: 335px;" width="2160" height="502"></canvas>

</div>

</body>