html5跟随鼠标炫酷网站引导页动画特效一款非常不错的引导页，文字效果渐变，鼠标跟随出绚丽的条纹。html5炫酷网站引导页，鼠标跟随出特效。
效果图
index.htm
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<!DOCTYPE html><html lang="zh-cn" xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title> 黑页 </title> <style> body{ font: 500 .875em PingFang SC,Lantinghei SC,Microsoft Yahei,Hiragino Sans GB,Microsoft Sans Serif,WenQuanYi Micro Hei,sans; background-color: #07040e; } #canvas { position: absolute; z-index: -1; top: 0; left: 0; bottom: 0; right: 0; cursor: none; } </style> </head> <body> <canvas id="canvas" width="100%" height="100%"></canvas> <script src="hovertreewelcome.js"></script> <script type="text/javascript"> (function(window) { var ctx, hue, logo, form, buffer, target = {}, tendrils = [], settings = {}; settings.debug = true; settings.friction = 0.5; settings.trails = 20; settings.size = 50; settings.dampening = 0.25; settings.tension = 0.98; Math.TWO_PI = Math.PI * 2; // ======================================================================================== // Oscillator 何问起 // ---------------------------------------------------------------------------------------- function Oscillator(options) { this.init(options || {}); } Oscillator.prototype = (function() { var value = 0; return { init: function(options) { this.phase = options.phase || 0; this.offset = options.offset || 0; this.frequency = options.frequency || 0.001; this.amplitude = options.amplitude || 1; }, update: function() { this.phase += this.frequency; value = this.offset + Math.sin(this.phase) * this.amplitude; return value; }, value: function() { return value; } }; })(); function Tendril(options) { this.init(options || {}); } Tendril.prototype = (function() { function Node() { this.x = 0; this.y = 0; this.vy = 0; this.vx = 0; } return { init: function(options) { this.spring = options.spring + (Math.random() * 0.1) - 0.05; this.friction = settings.friction + (Math.random() * 0.01) - 0.005; this.nodes = []; for (var i = 0, node; i < settings.size; i++) { node = new Node(); node.x = target.x; node.y = target.y; this.nodes.push(node); } }, update: function() { var spring = this.spring, node = this.nodes[0]; node.vx += (target.x - node.x) * spring; node.vy += (target.y - node.y) * spring; for (var prev, i = 0, n = this.nodes.length; i < n; i++) { node = this.nodes[i]; if (i > 0) { prev = this.nodes[i - 1]; node.vx += (prev.x - node.x) * spring; node.vy += (prev.y - node.y) * spring; node.vx += prev.vx * settings.dampening; node.vy += prev.vy * settings.dampening; } node.vx *= this.friction; node.vy *= this.friction; node.x += node.vx; node.y += node.vy; spring *= settings.tension; } }, draw: function() { var x = this.nodes[0].x, y = this.nodes[0].y, a, b; ctx.beginPath(); ctx.moveTo(x, y); for (var i = 1, n = this.nodes.length - 2; i < n; i++) { a = this.nodes[i]; b = this.nodes[i + 1]; x = (a.x + b.x) * 0.5; y = (a.y + b.y) * 0.5; ctx.quadraticCurveTo(a.x, a.y, x, y); } a = this.nodes[i]; b = this.nodes[i + 1]; ctx.quadraticCurveTo(a.x, a.y, b.x, b.y); ctx.stroke(); ctx.closePath(); } }; })(); // ---------------------------------------------------------------------------------------- function init(event) { document.removeEventListener('mousemove', init); document.removeEventListener('touchstart', init); document.addEventListener('mousemove', mousemove); document.addEventListener('touchmove', mousemove); document.addEventListener('touchstart', touchstart); mousemove(event); reset(); loop(); } function reset() { tendrils = []; for (var i = 0; i < settings.trails; i++) { tendrils.push(new Tendril({ spring: 0.45 + 0.025 * (i / settings.trails) })); } } function loop() { if (!ctx.running) return; ctx.globalCompositeOperation = 'source-over'; ctx.fillStyle = 'rgba(8,5,16,0.4)'; ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height); ctx.globalCompositeOperation = 'lighter'; ctx.strokeStyle = 'hsla(' + Math.round(hue.update()) + ',90%,50%,0.25)'; ctx.lineWidth = 1; if (ctx.frame % 60 == 0) { console.log(hue.update(), Math.round(hue.update()), hue.phase, hue.offset, hue.frequency, hue.amplitude); } for (var i = 0, tendril; i < settings.trails; i++) { tendril = tendrils[i]; tendril.update(); tendril.draw(); } ctx.frame++; ctx.stats.update(); requestAnimFrame(loop); } function resize() { ctx.canvas.width = window.innerWidth; ctx.canvas.height = window.innerHeight; } function start() { if (!ctx.running) { ctx.running = true; loop(); } } function stop() { ctx.running = false; } function mousemove(event) { if (event.touches) { target.x = event.touches[0].pageX; target.y = event.touches[0].pageY; } else { target.x = event.clientX target.y = event.clientY; } event.preventDefault(); } function touchstart(event) { if (event.touches.length == 1) { target.x = event.touches[0].pageX; target.y = event.touches[0].pageY; } } function keyup(event) { switch (event.keyCode) { case 32: save(); break; default: // console.log(event.keyCode); hovertree.com } } function letters(id) { var el = document.getElementById(id), letters = el.innerHTML.replace('&', '&').split(''), heading = ''; for (var i = 0, n = letters.length, letter; i < n; i++) { letter = letters[i].replace('&', '&'); heading += letter.trim() ? '<span class="letter-' + i + '">' + letter + '</span>' : ' '; } el.innerHTML = heading; setTimeout(function() { el.className = 'transition-in'; }, (Math.random() * 500) + 500); } function save() { if (!buffer) { buffer = document.createElement('canvas'); buffer.width = screen.availWidth; buffer.height = screen.availHeight; buffer.ctx = buffer.getContext('2d'); form = document.createElement('form'); form.method = 'post'; form.input = document.createElement('input'); form.input.type = 'hidden'; form.input.name = 'data'; form.appendChild(form.input); document.body.appendChild(form); } buffer.ctx.fillStyle = 'rgba(8,5,16)'; buffer.ctx.fillRect(0, 0, buffer.width, buffer.height); buffer.ctx.drawImage(canvas, Math.round(buffer.width / 2 - canvas.width / 2), Math.round(buffer.height / 2 - canvas.height / 2) ); buffer.ctx.drawImage(logo, Math.round(buffer.width / 2 - logo.width / 4), Math.round(buffer.height / 2 - logo.height / 4), logo.width / 2, logo.height / 2 ); window.open(buffer.toDataURL(), 'wallpaper', 'top=0,left=0,width=' + buffer.width + ',height=' + buffer.height); // form.input.value = buffer.toDataURL().substr(22); // form.submit(); hovertree.com } window.requestAnimFrame = (function() { return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(fn) { window.setTimeout(fn, 1000 / 60) }; })(); window.onload = function() { ctx = document.getElementById('canvas').getContext('2d'); ctx.stats = new Stats(); ctx.running = true; ctx.frame = 1; hue = new Oscillator({ phase: Math.random() * Math.TWO_PI, amplitude: 85, frequency: 0.0015, offset: 285 }); document.addEventListener('mousemove', init); document.addEventListener('touchstart', init); document.body.addEventListener('orientationchange', resize); window.addEventListener('resize', resize); window.addEventListener('keyup', keyup); window.addEventListener('focus', start); window.addEventListener('blur', stop); resize(); if (window.DEBUG) { var gui = new dat.GUI(); // gui.add(settings, 'debug'); settings.gui.add(settings, 'trails', 1, 30).onChange(reset); settings.gui.add(settings, 'size', 25, 75).onFinishChange(reset); settings.gui.add(settings, 'friction', 0.45, 0.55).onFinishChange(reset); settings.gui.add(settings, 'dampening', 0.01, 0.4).onFinishChange(reset); settings.gui.add(settings, 'tension', 0.95, 0.999).onFinishChange(reset); document.body.appendChild(ctx.stats.domElement); } }; })(window); </script> </body></html> |
hovertreewelcome.js
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var Stats = function() { var e = Date.now(), t = e, i = 0, n = 1 / 0, r = 0, s = 0, o = 1 / 0, a = 0, l = 0, h = 0, c = document.createElement("div"); c.id = "stats", c.addEventListener("mousedown", function(e) { e.preventDefault(), v(++h % 2) }, !1), c.style.cssText = "width:80px;opacity:0.9;cursor:pointer"; var u = document.createElement("div"); u.id = "fps", u.style.cssText = "padding:0 0 3px 3px;text-align:left;background-color:#002", c.appendChild(u); var d = document.createElement("div"); d.id = "fpsText", d.style.cssText = "color:#0ff;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px", d.innerHTML = "FPS", u.appendChild(d); var p = document.createElement("div"); for (p.id = "fpsGraph", p.style.cssText = "position:relative;width:74px;height:30px;background-color:#0ff", u.appendChild( p); 74 > p.children.length;) { var f = document.createElement("span"); f.style.cssText = "width:1px;height:30px;float:left;background-color:#113", p.appendChild(f) } var m = document.createElement("div"); m.id = "ms", m.style.cssText = "padding:0 0 3px 3px;text-align:left;background-color:#020;display:none", c.appendChild( m); var g = document.createElement("div"); g.id = "msText", g.style.cssText = "color:#0f0;font-family:Helvetica,Arial,sans-serif;font-size:9px;font-weight:bold;line-height:15px", g.innerHTML = "MS", m.appendChild(g); var y = document.createElement("div"); for (y.id = "msGraph", y.style.cssText = "position:relative;width:74px;height:30px;background-color:#0f0", m.appendChild( y); 74 > y.children.length;) { var f = document.createElement("span"); f.style.cssText = "width:1px;height:30px;float:left;background-color:#131", y.appendChild(f) } var v = function(e) { switch (h = e) { case 0: u.style.display = "block", m.style.display = "none"; break; case 1: u.style.display = "none", m.style.display = "block" } }, b = function(e, t) { var i = e.appendChild(e.firstChild); i.style.height = t + "px" }; return { REVISION: 11, domElement: c, setMode: v, begin: function() { e = Date.now() }, end: function() { var h = Date.now(); return i = h - e, n = Math.min(n, i), r = Math.max(r, i), g.textContent = i + " MS (" + n + "-" + r + ")", b(y, Math.min(30, 30 - 30 * (i / 200))), l++, h > t + 1e3 && (s = Math.round(1e3 * l / (h - t)), o = Math.min(o, s), a = Math.max(a, s), d.textContent = s + " FPS (" + o + "-" + a + ")", b(p, Math.min(30, 30 - 30 * (s / 100))), t = h, l = 0), h }, update: function() { e = this.end() } }}; |
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