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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Canvas Particle Wave</title>
<style>
body, html {
margin: 0;
padding: 0;
overflow: hidden;
background: black;
}
canvas {
display: block;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
let particlesArray;
const mouse = {
x: null,
y: null,
radius: 150
};
window.addEventListener('mousemove', function(event){
mouse.x = event.x;
mouse.y = event.y;
});
class Particle {
constructor(x, y, directionX, directionY, size, color){
this.x = x;
this.y = y;
this.directionX = directionX;
this.directionY = directionY;
this.size = size;
this.color = color;
}
draw(){
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2, false);
ctx.fillStyle = '#ffffff';
ctx.fill();
}
update(){
if(this.x > canvas.width || this.x < 0){
this.directionX = -this.directionX;
}
if(this.y > canvas.height || this.y < 0){
this.directionY = -this.directionY;
}
let dx = mouse.x - this.x;
let dy = mouse.y - this.y;
let distance = Math.sqrt(dx*dx + dy*dy);
if(distance < mouse.radius + this.size){
if(mouse.x < this.x && this.x < canvas.width - this.size * 10){
this.x += 10;
}
if(mouse.x > this.x && this.x > this.size * 10){
this.x -= 10;
}
if(mouse.y < this.y && this.y < canvas.height - this.size * 10){
this.y += 10;
}
if(mouse.y > this.y && this.y > this.size * 10){
this.y -= 10;
}
}
this.x += this.directionX;
this.y += this.directionY;
this.draw();
}
}
function init(){
particlesArray = [];
let numberOfParticles = (canvas.height * canvas.width) / 9000;
for(let i = 0; i < numberOfParticles; i++){
let size = (Math.random() * 5) + 1;
let x = (Math.random() * (innerWidth - size * 2));
let y = (Math.random() * (innerHeight - size * 2));
let directionX = (Math.random() * 5) - 2.5;
let directionY = (Math.random() * 5) - 2.5;
let color = '#ffffff';
particlesArray.push(new Particle(x, y, directionX, directionY, size, color));
}
}
function animate(){
requestAnimationFrame(animate);
ctx.clearRect(0,0,innerWidth,innerHeight);
for(let i = 0; i < particlesArray.length; i++){
particlesArray[i].update();
}
}
init();
animate();
window.addEventListener('resize',
function(){
canvas.width = innerWidth;
canvas.height = innerHeight;
init();
}
);
window.addEventListener('mouseout',
function(){
mouse.x = undefined;
mouse.y = undefined;
}
);
</script>
</body>
</html>