main role="main" class="main-content">
style>.main-wrapper {
z-index: 9999999999;
background: transparent;
pointer-events: none;
}
.noise {
pointer-events: none;
opacity: .2;
}
script>const noise = () => {
let canvas, ctx;
let wWidth, wHeight;
let noiseData = [];
let frame = 0;
let loopTimeout;
// Create Noise
const createNoise = () => {
const idata = ctx.createImageData(wWidth, wHeight);
const buffer32 = new Uint32Array(idata.data.buffer);
const len = buffer32.length;
for (let i = 0; i < len; i++) {
if (Math.random() < 0.1) {
buffer32[i] = 0xff000000;
}
}
noiseData.push(idata);
};
// Play Noise
const paintNoise = () => {
if (frame === 9) {
frame = 0;
} else {
frame++;
}
ctx.putImageData(noiseData[frame], 0, 0);
};
// Loop
const loop = () => {
paintNoise(frame);
loopTimeout = window.setTimeout(() => {
window.requestAnimationFrame(loop);
}, (1000 / 25));
};
// Setup
const setup = () => {
wWidth = window.innerWidth;
wHeight = window.innerHeight;
canvas.width = wWidth;
canvas.height = wHeight;
for (let i = 0; i < 10; i++) {
createNoise();
}
loop();
};
// Reset
let resizeThrottle;
const reset = () => {
window.addEventListener('resize', () => {
window.clearTimeout(resizeThrottle);
resizeThrottle = window.setTimeout(() => {
window.clearTimeout(loopTimeout);
setup();
}, 200);
}, false);
};
// Init
const init = (() => {
canvas = document.getElementById('noise');
ctx = canvas.getContext('2d');
setup();
})();
};
noise();
