html--蛆

    New Document             body, html {position: absolute;margin: 0;padding: 0;width: 100%;height: 100%;overflow: hidden;}canvas {position: absolute;width: 100%;height: 100%;background: #000;cursor: pointer;}#node {display: none;}          "use strict";{const Tentacle = class {constructor() {this.length = 40 + Math.round(80 * Math.random());this.vel = 2;this.amp = 0.2 + 0.4 * Math.random();this.freq = 0.05 + 0.3 * Math.random();this.dir = 2 * Math.PI * Math.random();this.frame = 0;this.free = true;this.vDir = 0;this.nodes = [];for (let i = 0; i  canvas.width) {head.x--;this.dir += 0.1;} else if (head.x  canvas.height) {head.y--;this.dir += 0.1;} else if (head.y  0 ? tentacle.nodes[i - 1] : null;this.pprev = i > 1 ? tentacle.nodes[i - 2] : null;this.size = 6 + s * s / tentacle.length;this.x = x;this.y = y;this.a = 0;this.img = document.getElementById("node");}move() {const dx = this.x - this.pprev.x;const dy = this.y - this.pprev.y;this.a = Math.atan2(dy, dx);const d = Math.sqrt(dx * dx + dy * dy);this.x = this.prev.x + dx * 10 / d;this.y = this.prev.y + dy * 10 / d;ctx.save();ctx.translate(this.x, this.y);ctx.rotate(this.a + 0.4);ctx.drawImage(this.img,-this.size * 0.5,-this.size * 0.5,this.size,this.size);ctx.restore();}};const canvas = {init() {this.elem = document.createElement("canvas");document.body.appendChild(this.elem);this.resize();window.addEventListener("resize", () => this.resize(), false);return this.elem.getContext("2d");},resize() {this.width = this.elem.width = this.elem.offsetWidth;this.height = this.elem.height = this.elem.offsetHeight;}};const pointer = {init(canvas) {this.x = -1000;this.y = 0;["mousemove", "touchstart", "touchmove"].forEach((event, touch) => {document.addEventListener(event,e => {if (touch) {e.preventDefault();this.x = e.targetTouches[0].clientX;this.y = e.targetTouches[0].clientY;} else {this.x = e.clientX;this.y = e.clientY;}},false);});}};const ctx = canvas.init();pointer.init(canvas);const tentacles = [];for (let i = 0; i  {requestAnimationFrame(run);ctx.clearRect(0, 0, canvas.width, canvas.height);for (const tentacle of tentacles) {tentacle.move();}};run();}