js实现canvas激光镭射雕刻表白文字动画效果代码
代码语言:html
所属分类:表白
代码描述:js实现canvas激光镭射雕刻表白文字动画效果代码
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <style> .page-laser-to-text { position: relative; overflow: hidden; } .page-laser-to-text canvas { display: block; } .page-laser-to-text input { position: absolute; bottom: 50px; left: 0; right: 0; display: block; outline: none; background-color: rgba(38, 50, 56, 0.2); color: #ffffff; border: none; width: 50%; min-width: 500px; max-width: 100%; margin: auto; height: 60px; line-height: 60px; font-size: 40px; padding: 0 20px; } .page-laser-to-text input:hover, .page-laser-to-text input:focus { border: 1px solid rgba(38, 50, 56, 0.6); } .page-laser-to-text input::-webkit-input-placeholder { color: rgba(255, 255, 255, 0.1); } </style> </head> <body> <div class="page page-laser-to-text"> <input id="input" type="text" maxlength="24" placeholder="I love you!"> <canvas id="canvas"></canvas> </div> <script> let canvas, ctx, w, h, laser, text, particles, input; function Laser(options) { options = options || {}; this.lifespan = options.lifespan || Math.round(Math.random() * 20 + 20); this.maxlife = this.lifespan; this.color = options.color || '#fd2423'; this.x = options.x || Math.random() * w; this.y = options.y || Math.random() * h; this.width = options.width || 2; this.update = function (index, array) { this.lifespan > 0 && this.lifespan--; this.lifespan <= 0 && this.remove(index, array); }; this.render = function (ctx) { if (this.lifespan <= 0) return; ctx.beginPath(); ctx.globalAlpha = this.lifespan / this.maxlife; ctx.strokeStyle = this.color; ctx.lineWidth = this.width; ctx.moveTo(this.x, this.y); ctx.lineTo(w, this.y); ctx.stroke(); ctx.closePath(); }; this.remove = function (index, array) { array.splice(index, 1); }; } function Spark(options) { options = options || {}; this.x = options.x || w * 0.5; this.y = options.y || h * 0.5; this.v = options.v || { direct: Math.random() * Math.PI * 2, weight: Math.random() * 10 + 2, friction: 0.94 }; this.a = options.a || { change: Math.random() * 0.2 - 0.1, min: this.v.direct - Math.PI * 0.4, max: this.v.direct + Math.PI * 0.4 }; this.g = options.g || { direct: Math.PI * 0.5 + (Math.random() * 0.4 - 0.2), weight: Math.random() * 0.5 + 0.5 }; this.width = options.width || Math.random() * 3; this.lifespan = options.lifespan || Math.round(Math.random() * 20 + 40); this.maxlife = this.lifespan; this.color = options.color || '#fdab23'; this.prev = { x: this.x, y: this.y }; this.update = function (index, array) { this.prev = { x: this.x, y: this.y }; this.x += Math.cos(this.v.direct) * this.v.weight; this.x += Math.cos(this.g.direct) * this.g.weight; this.y += Math.sin(this.v.direct) * this.v.weight; this.y += Math.sin(this.g.direct) * this.g.weight; this.v.weight *= this.v.friction; this.v.direct += this.a.change; (this.v.direct > this.a.max || this.v.direct < this.a.min) && (this.a.change *= -1); this.lifespan > 0 && this.lifespan--; this.lifespan <= 0 && this.remove(index, array); }; this.render = function (ctx) { if (this.lifespan <= 0) return; ctx.beginPath(); ctx.globalAlpha = this.lifespan / this.maxlife; ctx.strokeStyle = this.color; ctx.lineWidth = this.width; ctx.moveTo(this.x, this.y); ctx.lineTo(this.prev.x, this.prev.y); ctx.stroke(); ctx.closePath(); }; this.remove = function (index, array) { array.splice(index, 1); .........完整代码请登录后点击上方下载按钮下载查看
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