143 lines
3.4 KiB
JavaScript
143 lines
3.4 KiB
JavaScript
/*!
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* Fairy Dust Cursor.js
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* - 90's cursors collection
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* -- https://github.com/tholman/90s-cursor-effects
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* -- http://codepen.io/tholman/full/jWmZxZ/
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*/
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//鼠标点击雪花特效
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(function fairyDustCursor() {
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var possibleColors = ["#D61C59", "#E7D84B", "#1B8798"]
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var width = window.innerWidth;
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var height = window.innerHeight;
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var cursor = {x: width/2, y: width/2};
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var particles = [];
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function init() {
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bindEvents();
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loop();
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}
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// Bind events that are needed
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function bindEvents() {
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document.addEventListener('mousemove', onMouseMove);
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document.addEventListener('touchmove', onTouchMove);
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document.addEventListener('touchstart', onTouchMove);
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window.addEventListener('resize', onWindowResize);
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}
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function onWindowResize(e) {
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width = window.innerWidth;
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height = window.innerHeight;
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}
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function onTouchMove(e) {
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if( e.touches.length > 0 ) {
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for( var i = 0; i < e.touches.length; i++ ) {
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addParticle( e.touches[i].clientX, e.touches[i].clientY, possibleColors[Math.floor(Math.random()*possibleColors.length)]);
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}
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}
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}
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function onMouseMove(e) {
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cursor.x = e.clientX;
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cursor.y = e.clientY;
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addParticle( cursor.x, cursor.y, possibleColors[Math.floor(Math.random()*possibleColors.length)]);
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}
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function addParticle(x, y, color) {
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var particle = new Particle();
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particle.init(x, y, color);
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particles.push(particle);
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}
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function updateParticles() {
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// Updated
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for( var i = 0; i < particles.length; i++ ) {
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particles[i].update();
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}
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// Remove dead particles
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for( var i = particles.length -1; i >= 0; i-- ) {
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if( particles[i].lifeSpan < 0 ) {
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particles[i].die();
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particles.splice(i, 1);
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}
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}
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}
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function loop() {
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requestAnimationFrame(loop);
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updateParticles();
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}
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/**
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* Particles
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*/
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function Particle() {
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this.character = "*";
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this.lifeSpan = 120; //ms
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this.initialStyles ={
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"position": "fixed",
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"top": "0", //必须加
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"display": "block",
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"pointerEvents": "none",
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"z-index": "10000000",
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"fontSize": "20px",
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"will-change": "transform"
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};
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// Init, and set properties
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this.init = function(x, y, color) {
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this.velocity = {
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x: (Math.random() < 0.5 ? -1 : 1) * (Math.random() / 2),
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y: 1
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};
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this.position = {x: x - 10, y: y - 20};
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this.initialStyles.color = color;
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console.log(color);
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this.element = document.createElement('span');
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this.element.innerHTML = this.character;
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applyProperties(this.element, this.initialStyles);
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this.update();
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document.body.appendChild(this.element);
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};
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this.update = function() {
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this.position.x += this.velocity.x;
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this.position.y += this.velocity.y;
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this.lifeSpan--;
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this.element.style.transform = "translate3d(" + this.position.x + "px," + this.position.y + "px,0) scale(" + (this.lifeSpan / 120) + ")";
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}
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this.die = function() {
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this.element.parentNode.removeChild(this.element);
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}
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}
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/**
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* Utils
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*/
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// Applies css `properties` to an element.
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function applyProperties( target, properties ) {
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for( var key in properties ) {
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target.style[ key ] = properties[ key ];
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}
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}
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init();
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})(); |