"exploding letter"
Bootstrap 4.1.1 Snippet by koshikojha

<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Exploding letter</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"> </head> <body> <div class="shaker"> <div id="template" class="dialog"> <div class="dialog-body"> <div id="triangle-wrapper"> <div class="shadow"> <div></div> </div> </div> <button class="stamp hvr-buzz" id="stamp-envelope"></button> </div> <div id="info">open me</div> </div> <div class="message"> <div class="part-one" id="part-one-message"> <div class="message-header"></div> <div class="message-text">Dear Harry, <br><br>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. <br><br> I await your owl,<br><br> Klara </div> <div class="stamp-wrapper"> <div class="stamp hvr-buzz" id="stamp-footer">H</div> </div> <div class="message-footer"></div> </div> </div> </div> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js'></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.6.1/dat.gui.js'></script> <script src='https://cdn.rawgit.com/josephg/noisejs/master/perlin.js'> </script> <script src='letter-script.js'></script> </body> </html>
@import url("https://fonts.googleapis.com/css?family=Caveat"); @import url("https://fonts.googleapis.com/css?family=Ledger"); * { box-sizing: border-box; } body, button, input { font-family: "Ledger"; } body { background-color: #3a736c; overflow: hidden; } #info { position: absolute; font-family: Caveat; color: #F1CFA0; padding-top: 15px; font-size: 5vh; opacity: 0.7; } .shaker { position: relative; width: 100vw; height: 100vh; } canvas { position: relative; top: 0; left: 0; z-index: -10; } .dialog { z-index: 10; top: 30vh; transform: translateY(30vh); margin: 0 auto; width: 30vw; background-color: #f1cfa0; text-align: center; min-width: 200px; box-shadow: 10px 10px #254f49; } .dialog:after { content: ""; display: block; padding-bottom: 0; } .shadow { width: 100%; height: 0; padding-left: 50%; padding-top: 30%; overflow: hidden; } .shadow div { width: 0; height: 0; margin-left: -1000px; margin-top: -600px; border-left: 1000px solid transparent; border-right: 1000px solid transparent; border-top: 600px solid #f2a71e; /* box-shadow: 10px 10px #c98510;*/ } #stamp-envelope { text-align: center; border-radius: 100%; -moz-border-radius: 50%; -webkit-border-radius: 50%; width: 0; height: 0; padding-left: 13%; padding-top: 14%; margin-bottom: 20%; /* overflow:hidden;*/ margin-top: -12.5%; background-color: #d34f27; border: 2px solid #d34f27; color: #f2a71e; font-weight: bold; text-transform: uppercase; cursor: pointer; outline: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; box-shadow: 2px 3px #93321a; } @media screen and (max-height: 400px) { .dialog { top: 20vh; transform: translateY(20vh); width: 20vw; } .stamp.hvr-buzz p { font-size: 2vw; margin-left: -2.2vw; margin-top: -2.8vw; } } .stamp-wrapper { text-align: right; margin-bottom: 20px; margin-right: 20px; } #stamp-footer { display: inline-block; padding: 16px 25px; color: #f2a71e; font-size: 35px; font-weight: bold; text-transform: uppercase; border: 4px solid #d34f27; -moz-border-radius: 50%; -webkit-border-radius: 50%; border-radius: 50%; text-transform: uppercase; cursor: pointer; text-align: center; outline: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; background-color: #d34f27; } .stamp:hover { animation-name: hvr-buzz; } .stamp:active { } @-webkit-keyframes hvr-buzz { 50% { -webkit-transform: translateX(3px) rotate(2deg); transform: translateX(3px) rotate(2deg); } 100% { -webkit-transform: translateX(-3px) rotate(-2deg); transform: translateX(-3px) rotate(-2deg); } } @keyframes hvr-buzz { 50% { -webkit-transform: translateX(3px) rotate(2deg); transform: translateX(3px) rotate(2deg); } 100% { -webkit-transform: translateX(-3px) rotate(-2deg); transform: translateX(-3px) rotate(-2deg); } } .hvr-buzz { display: inline-block; vertical-align: middle; -webkit-transform: perspective(1px) translateZ(0); transform: perspective(1px) translateZ(0); box-shadow: 0 0 1px rgba(0, 0, 0, 0); } .hvr-buzz:hover, .hvr-buzz:active { -webkit-animation-name: hvr-buzz; animation-name: hvr-buzz; -webkit-animation-duration: 0.4s; animation-duration: 0.4s; -webkit-animation-timing-function: linear; animation-timing-function: linear; -webkit-animation-iteration-count: infinite; animation-iteration-count: infinite; } .message { display: none; position: absolute; width: 400px; max-height: 65vh; margin-left: -200px; left: 50vw; top: 47vh; margin-top: -30vh; } .part-one { position: relative; background-color: #f1cfa0; max-height: 65vh; overflow-y: auto; overflow-x: hidden; } .message-header { width: inherit; height: 5vh; background-color: #f2a71e; } .message-text { padding: 40px 30px; padding-bottom: 0px; letter-spacing: 1px; line-height: 25px; font-family: "Caveat", cursive; color: #3a736c; } .message-footer { /* position: absolute;*/ bottom: 0; background-color: #d34f27; width: 400px; height: 5vh; } #stamp-footer { /* position: absolute;*/ right: 30px; bottom: 60px; padding: 0 0; padding-top: 10px; width: 60px; height: 60px; margin-top: -34px; } #ui { position: absolute; left: calc(50vw - 40px); top: calc(50vh - 40px); } .dg.ac { z-index: 1000 !important; } /* Scrollbar edit for chrome just for fun. */ #part-one-message::-webkit-scrollbar-track { background-color: #254f49; } #part-one-message::-webkit-scrollbar { width: 10px; } #part-one-message::-webkit-scrollbar-thumb { background-color: #427f77; }
var _createClass = (function() { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function(Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })(); function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } var options = { drag: 1, gravity: 0, lifespan: 161, maxSpeed: 100, maxParticles: 500, particleColors: ["242, 167, 30", "241, 207, 160", "211, 79, 39"], particlesPerPress: 400, jitter: 0, randomness: 1, size: 10, sizeRange: 10, shrinkSpeed: 0.1 }; var ParticleSystem = (function() { function ParticleSystem() { _classCallCheck(this, ParticleSystem); this.particles = []; } _createClass(ParticleSystem, [ { key: "addParticle", value: function addParticle(opts) { for (var i = 0; i < opts.numToAdd; i++) { this.particles.push(new Particle(opts)); } while (this.particles.length > options.maxParticles) { this.removeParticle(); } } }, { key: "removeParticle", value: function removeParticle() { this.particles.shift(); } }, { key: "update", value: function update() { for (var i = 0; i < this.particles.length; i++) { if (this.particles[i].lifespan > 0) { this.particles[i].update(); } } } }, { key: "draw", value: function draw() { for (var i = 0; i < this.particles.length; i++) { this.particles[i].draw(); } } } ]); return ParticleSystem; })(); var Particle = (function() { function Particle(opts) { _classCallCheck(this, Particle); // How many frames particle will live this.lifespan = options.lifespan; // Color this.color = options.particleColors[ Math.floor(Math.random() * options.particleColors.length) ]; // Size this.size = options.size; this.size += Math.random() * options.sizeRange - options.sizeRange / 2; // Position and velocity this.x = opts.x; this.y = opts.y; var velXMin = -opts.leftSpread / (this.lifespan / 10); var velXMax = opts.rightSpread / (this.lifespan / 10); var velYMin = -opts.topSpread / (this.lifespan / 10); var velYMax = opts.bottomSpread / (this.lifespan / 10); var velXRange = velXMax - velXMin; var velYRange = velYMax - velYMin; var originLeftPercent = opts.leftSpread / (opts.leftSpread + opts.rightSpread); var originTopPercent = opts.topSpread / (opts.topSpread + opts.bottomSpread); this.velX = Math.random() * velXRange - velXRange * originLeftPercent; this.velY = Math.random() * velYRange - velYRange * originTopPercent; // Values for perlin noise this.xOff = Math.random() * 6400; this.yOff = Math.random() * 6400; // Opacity is reduced as lifespan gets close to 0 this.opacity = 1; // Added to velY every frame this.gravity = options.gravity; // Multiply with velocity every frame this.drag = options.drag; this.drag = options.drag; } _createClass(Particle, [ { key: "update", value: function update() { // Add gravity force to the y velocity this.velY += this.gravity; // Add randomness with perlin noise var randomX = noise.simplex2(this.xOff, 0); var randomY = noise.simplex2(this.yOff, 0); this.velX += randomX / (10 / options.randomness); this.velY += randomY / (10 / options.randomness); this.xOff += options.jitter; this.yOff += options.jitter; // // Apply drag this.velX *= this.drag; this.velY *= this.drag; // And the velocity to the position this.x += this.velX; this.y += this.velY; // Apply fade this.opacity = this.lifespan / 100; // Apply shrink this.size -= options.shrinkSpeed; this.size = Math.max(0, this.size); // Update lifespan this.lifespan -= 1; if (this.size <= 0.1 || this.opacity <= 0.01) { this.lifespan = 0; } } }, { key: "draw", value: function draw() { // set the fill style to have the right alpha context.fillStyle = "rgba(" + this.color + ", " + this.opacity + ")"; // draw a circle of the required size context.beginPath(); context.arc(this.x, this.y, this.size, 0, Math.PI * 2); context.closePath(); // and fill it context.fill(); } } ]); return Particle; })(); function loop() { // Clear the canvas context.clearRect(0, 0, screenWidth, screenHeight); // Update and draw paricles ps.update(); ps.draw(); // RAF requestAnimationFrame(loop); } function explode(el, x, y) { var dialog = document.querySelector(".dialog"); var rect = dialog.getBoundingClientRect(); dialog.classList.remove("is-in"); ps.addParticle({ numToAdd: options.particlesPerPress, x: x, y: y, leftSpread: x - rect.left, rightSpread: rect.right - x, topSpread: y - rect.top, bottomSpread: rect.bottom - y }); } // Globals var ps = void 0; var context = void 0; var mouseX = void 0; var mouseY = void 0; var isPointerPressed = false; // Get screen size variables var screenWidth = window.innerWidth; var screenHeight = window.innerHeight; var halfWidth = window.innerWidth / 2; var halfHeight = window.innerHeight / 2; function updateCanvasAndScreenVars() { screenWidth = window.innerWidth; screenHeight = window.innerHeight; halfWidth = window.innerWidth / 2; halfHeight = window.innerHeight / 2; canvas.width = screenWidth; canvas.height = screenHeight; } // Initialize console.clear(); // Create Canvas element var canvas = document.createElement("canvas"); context = canvas.getContext("2d"); $(".shaker").append(canvas); updateCanvasAndScreenVars(); $(window).on("resize", updateCanvasAndScreenVars); $("button").on("click", function(e) { var shaker = document.querySelector(".shaker"); shaker.classList.add("is-shaking"); var dialog = document.querySelector(".dialog"); explode(dialog, e.pageX, e.pageY); $(".dialog").hide(); $(".message").fadeIn(2000); setTimeout(function() { $(dialog).css("z-index", 1); }, 200); }); $("#stamp-footer").on("click", function(e) { var message = document.getElementById("part-one-message"); message.scrollTop = 0; $(".message").hide(); $(".dialog").show(); }); // Perlin Noise noise.seed(Math.floor(Math.random() * 64000)); // Create Particle System ps = new ParticleSystem(); loop();

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