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Below is the html code for this video.
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Spectacular Diwali Animation</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<canvas id="canvas"></canvas>
<div class="container">
<h4>happy</h4>
<h1><span>di</span><span>wa</span><span>li</span></h1>
</div>
<script src="index.js"></script>
</body>
</html>Below is the css code for this video.
style.css
* {
margin: 0;
padding: 0;
}
body {
height: 100vh;
width: 100%;
overflow: hidden;
}
canvas {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
}
.container {
display: flex;
height: 100%;
width: 100%;
background: linear-gradient(to right, #000000bf, #00000080, #000000bf),
radial-gradient(circle, #f0468e80, #7c457a80),
url('https://images.unsplash.com/photo-1635192592106-77a5aacbe1a3?auto=format&fit=crop');
color: #ffffff;
flex-direction: column;
justify-content: center;
align-items: center;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
font-family: sans-serif;
text-align: center;
text-transform: uppercase;
}
h4 {
font-size: 2.4vw;
margin-left: -27vw;
margin-bottom: 0.6vw;
letter-spacing: 6px;
text-shadow: -1.5px 1.5px 0.9px #ffffff80;
}
h1 {
position: relative;
font-size: 9.6vw;
line-height: 6.9vw;
z-index: 1;
animation: textShadowAnim 6s linear infinite;
}
h1 span {
display: block;
}
h1 span:nth-child(1) {
margin-left: -20.57vw;
}
h1 span:nth-child(3) {
margin-left: 19.25vw;
}
@keyframes textShadowAnim {
0%, 100% {
text-shadow: -3.3px 3.3px 1.5px #ffffff80;
}
25% {
text-shadow: -3.3px -3.3px 1.5px #ffffff80;
}
50% {
text-shadow: 3.3px -3.3px 1.5px #ffffff80;
}
75% {
text-shadow: 3.3px 3.3px 1.5px #ffffff80;
}
}Below is the javascript code for this video.
index.js
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var canvasWidth = document.body.clientWidth;
var canvasHeight = document.body.clientHeight;
canvas.width = canvasWidth;
canvas.height = canvasHeight;
var fireworkNodes = [];
const PI_TWO = Math.PI * 2;
const DEGREE_TO_RADIAN = Math.PI / 180;
function getRandomInt(max, min = 0) { return Math.floor(Math.random() * (max - min) + min); }
function getRandomFloat(max, min = 0) { return Math.random() * (max - min) + min; }
var angleFactor = 0;
function animate() {
requestAnimationFrame(animate);
ctx.globalCompositeOperation = "destination-out";
ctx.fillStyle = "rgba(0, 0, 0, 0.078)";
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
ctx.globalCompositeOperation = "lighter";
var totalNodes = fireworkNodes.length;
while (totalNodes--) {
let node = fireworkNodes[totalNodes];
drawFireworkNode(node);
if (node.isFadedOut) { fireworkNodes.splice(totalNodes, 1); }
}
if (fireworkNodes.length < 10) {
let newNodes = 6;
while (newNodes--) {
fireworkNodes.push(createFireworkNode(
getRandomInt(canvasWidth), getRandomInt(canvasHeight),
40, `hsl(${getRandomInt(300)}, 100%, 50%)`, 100
));
}
}
}
function drawFireworkNode(node) {
var totalParticles = node.particles.length;
while (totalParticles--) {
let particle = node.particles[totalParticles];
ctx.beginPath();
ctx.fillStyle = particle.color;
ctx.arc(particle.x, particle.y, 1, 0, PI_TWO);
ctx.fill();
ctx.closePath();
updateParticlePosition(particle);
if (particle.isFadedOut) {
node.particles.splice(totalParticles, 1);
if (node.particleCount > 20) {
fireworkNodes.push(createFireworkNode(
particle.x, particle.y, node.explosionRadius * 10,
node.color, Math.floor(node.particleCount / 10)
));
}
}
}
if (!node.particles.length) { node.isFadedOut = true; }
}
function updateParticlePosition(particle) {
var dx = particle.x - particle.targetX;
var dy = particle.y - particle.targetY;
var distance = Math.sqrt(dx * dx + dy * dy);
particle.isFadedOut = distance < 1;
particle.x -= dx * particle.velocity;
particle.y -= dy * particle.velocity;
}
function createFireworkNode(x, y, radius, color, particleCount) {
radius = radius || 0;
particleCount = particleCount || 0;
var particles = [];
var count = particleCount;
while (particleCount--) {
let angleModifier = Math.floor(Math.random() * 100);
let distanceFromCenter = Math.floor(radius * Math.random());
particles.push({
x: x, y: y,
targetX: x + distanceFromCenter * Math.cos(angleFactor * angleModifier * DEGREE_TO_RADIAN),
targetY: y + distanceFromCenter * Math.sin(angleFactor * angleModifier * DEGREE_TO_RADIAN),
color: color, velocity: getRandomFloat(1, 0.05), isFadedOut: false
});
angleFactor++;
}
return {
explosionRadius: radius,
particleCount: count,
color: color,
x: x,
y: y,
particles: particles,
isFadedOut: false
};
}
animate();Thanks for visiting