<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<title>大波浪动画</title>
<style type="text/css">
body {
margin: 0;
background: #203260;
overflow: hidden;
}
</style>
</head>
<body>
<div id="m-points"></div>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script>
<script src="https://cdn.bootcss.com/three.js/r56/three.js"></script>
<script type="text/javascript">
var SEPARATION = 100,
AMOUNTX = 50,
AMOUNTY = 50;
var container;
var camera,
scene,
renderer;
var particles,
particle,
count = 0;
var mouseX = 0,
mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
function init(dom) {
container = dom
camera = new THREE.PerspectiveCamera(75, 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: '#3c78d8',
program: function(context) {
context.beginPath();
context.arc(0, 0, 1, 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;
}
let renderAnimation = (container) => {
init(container);
animate();
}
let domContainer = document.getElementById('m-points')
let a = renderAnimation(domContainer)
</script>
</body>
</html>