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<div id="screen"></div>
body {
margin: 0;
width: 100vw;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
overflow: hidden;
background-color: #000;
}
canvas {
position: absolute;
left: 0;
top: 0;
z-index: 9998;
// background-color: #fff;
width: 100%;
height: 100%;
&.snow {
background-color: #aaa;
opacity: 0.2;
}
}
#screen {
width: 100%;
height: 100%;
background: transparent
linear-gradient(to bottom, #85908c 0%, #323431 100%)
repeat
scroll
0
0;
// background-image: url(https://images.unsplash.com/photo-1517672651691-24622a91b550?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ);
background-size: cover;
}
$screen-background: #121010;
@mixin pseudo {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
content: " ";
}
@mixin fill {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
}
.screen-container {
width: 640px;
height: 360px;
overflow: hidden;
position: relative;
}
.screen-wrapper {
position: relative;
width: 100%;
height: 100%;
&:first-child {
// opacity: 0;
}
}
.vcr {
// filter: blur(1px);
opacity: 0.6
}
.video {
filter: blur(1px);
width: 100%;
height: 100%;
}
.image {
width: 100%;
height: auto;
filter: blur(1.2px);
}
.vignette {
background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/86186/crt.png);
@include fill;
background-repeat: no-repeat;
background-size: 100% 100%;
z-index: 10000;
}
.scanlines {
@include fill;
z-index: 9999;
background: linear-gradient(
transparentize($screen-background, 1) 50%,
transparentize(darken($screen-background, 10), 0.75) 50%
),
linear-gradient(
90deg,
transparentize(#ff0000, 0.94),
transparentize(#00ff00, 0.98),
transparentize(#0000ff, 0.94)
);
background-size: 100% 2px, 3px 100%;
pointer-events: none;
}
.wobblex {
animation: wobblex 100ms infinite;
}
.wobbley {
animation: wobbley 100ms infinite;
}
.glitch {
animation: 5s ease 2000ms normal none infinite running glitch;
}
@keyframes wobblex {
50% {
transform: translateX(1px);
}
51% {
transform: translateX(0);
}
}
@keyframes wobbley {
0% {
transform: translateY(1px);
}
100% {
transform: translateY(0);
}
}
@keyframes glitch {
30% {
}
40% {
opacity: 1;
transform: scale(1, 1);
transform: skew(0, 0);
}
41% {
opacity: 0.8;
transform: scale(1, 1.2);
transform: skew(80deg, 0);
}
42% {
opacity: 0.8;
transform: scale(1, 1.2);
transform: skew(-50deg, 0);
}
43% {
opacity: 1;
transform: scale(1, 1);
transform: skew(0, 0);
}
65% {
}
}
@keyframes glitch1 {
0% {
transform: translateX(0);
}
30% {
transform: translateX(0);
}
31% {
transform: translateX(10px);
}
32% {
transform: translateX(0);
}
98% {
transform: translateX(0);
}
100% {
transform: translateX(10px);
}
}
.text span:nth-child(2) {
animation: glitch2 1s infinite;
}
@keyframes glitch2 {
0% {
transform: translateX(0);
}
30% {
transform: translateX(0);
}
31% {
transform: translateX(-10px);
}
32% {
transform: translateX(0);
}
98% {
transform: translateX(0);
}
100% {
transform: translateX(-10px);
}
}
.overlay .text {
animation: 5s ease 2000ms normal none infinite running glitch;
}
.on > .screen-wrapper {
animation: 3000ms linear 0ms normal forwards 1 running on;
}
.off > .screen-wrapper {
animation: 750ms
cubic-bezier(0.230, 1.000, 0.320, 1.000)
0ms
normal
forwards
1
running
off;
}
@keyframes on {
0% {
transform: scale(1, 0.8) translate3d(0, 0, 0);
filter: brightness(4);
opacity: 1;
}
3.5% {
transform: scale(1, 0.8) translate3d(0, 100%, 0);
}
3.6% {
transform: scale(1, 0.8) translate3d(0, -100%, 0);
opacity: 1;
}
9% {
transform: scale(1.3, 0.6) translate3d(0, 100%, 0);
filter: brightness(4);
opacity: 0;
}
11% {
transform: scale(1, 1) translate3d(0, 0, 0);
filter: contrast(0) brightness(0);
opacity: 0;
}
100% {
transform: scale(1, 1) translate3d(0, 0, 0);
filter: contrast(1) brightness(1.2) saturate(1.3);
opacity: 1;
}
}
@keyframes off {
0% {
transform: scale(1, 1);
filter: brightness(1);
}
40% {
transform: scale(1, 0.005);
filter: brightness(100);
}
70% {
transform: scale(1, 0.005);
}
90% {
transform: scale(0.005, 0.005);
}
100% {
transform: scale(0, 0);
}
}
.roller {
position: relative;
// &::after {
// width: 100%;
// height: 3px;
// position: absolute;
// left: 0;
// top: 0;
// background-color: rgba(0,0,0,0.2);
// filter: blur(1px);
// content: "";
// animation: 1000ms linear 0ms forwards infinite roll;
// }
animation: 2000ms linear 0ms forwards infinite roll;
}
@keyframes roll {
from {
transform: translate3d(0, 0, 0);
}
to {
transform: translate3d(0, -50%, 0);
}
}
.dg.ac {
z-index: 10000 !important;
}
function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
class ScreenEffect {
constructor(parent, options) {
this.parent = parent;
if ( typeof parent === "string" ) {
this.parent = document.querySelector(parent);
}
this.config = Object.assign({}, {
//
}, options)
this.effects = {};
this.events = {
resize: this.onResize.bind(this)
};
window.addEventListener("resize", this.events.resize, false);
this.render();
}
render() {
const container = document.createElement("div");
container.classList.add("screen-container");
const wrapper1 = document.createElement("div");
wrapper1.classList.add("screen-wrapper");
const wrapper2 = document.createElement("div");
wrapper2.classList.add("screen-wrapper");
const wrapper3 = document.createElement("div");
wrapper3.classList.add("screen-wrapper");
wrapper1.appendChild(wrapper2);
wrapper2.appendChild(wrapper3);
container.appendChild(wrapper1);
this.parent.parentNode.insertBefore(container, this.parent);
wrapper3.appendChild(this.parent);
this.nodes = { container, wrapper1, wrapper2, wrapper3 };
this.onResize();
}
onResize(e) {
this.rect = this.parent.getBoundingClientRect();
if ( this.effects.vcr && !!this.effects.vcr.enabled ) {
this.generateVCRNoise();
}
}
add(type, options) {
const config = Object.assign({}, {
fps: 30,
blur: 1
}, options);
if ( Array.isArray(type) ) {
for ( const t of type ) {
this.add(t);
}
return this;
}
const that = this;
if ( type === "snow" ) {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
canvas.classList.add(type);
canvas.width = this.rect.width / 2;
canvas.height = this.rect.height / 2;
this.nodes.wrapper2.appendChild(canvas);
animate();
// that.generateSnow(ctx);
function animate() {
that.generateSnow(ctx);
that.snowframe = requestAnimationFrame(animate);
}
this.effects[type] = {
wrapper: this.nodes.wrapper2,
node: canvas,
enabled: true,
config
};
return this;
}
if ( type === "roll" ) {
return this.enableRoll();
}
if ( type === "vcr" ) {
const canvas = document.createElement("canvas");
canvas.classList.add(type);
this.nodes.wrapper2.appendChild(canvas);
canvas.width = this.rect.width;
canvas.height = this.rect.height;
this.effects[type] = {
wrapper: this.nodes.wrapper2,
node: canvas,
ctx: canvas.getContext("2d"),
enabled: true,
config
};
this.generateVCRNoise();
return this;
}
let node = false;
let wrapper = this.nodes.wrapper2;
switch(type) {
case "wobblex":
case "wobbley":
wrapper.classList.add(type);
break;
case "scanlines":
node = document.createElement("div");
node.classList.add(type);
wrapper.appendChild(node);
break;
case "vignette":
wrapper = this.nodes.container;
node = document.createElement("div");
node.classList.add(type);
wrapper.appendChild(node);
break;
case "image":
wrapper = this.parent;
node = document.createElement('img');
node.classList.add(type);
node.src = config.src;
wrapper.appendChild(node);
break;
case "video":
wrapper = this.parent;
node = document.createElement('video');
node.classList.add(type);
node.src = config.src;
node.crossOrigin = 'anonymous';
node.autoplay = true;
node.muted = true;
node.loop = true;
wrapper.appendChild(node);
break;
}
this.effects[type] = {
wrapper,
node,
enabled: true,
config
};
return this;
}
remove(type) {
const obj = this.effects[type];
if ( type in this.effects && !!obj.enabled ) {
obj.enabled = false;
if ( type === "roll" && obj.original ) {
this.parent.appendChild(obj.original);
}
if ( type === "vcr" ) {
clearInterval(this.vcrInterval);
}
if ( type === "snow" ) {
cancelAnimationFrame(this.snowframe);
}
if ( obj.node ) {
obj.wrapper.removeChild(obj.node);
} else {
obj.wrapper.classList.remove(type);
}
}
return this;
}
enableRoll() {
const el = this.parent.firstElementChild;
if ( el ) {
const div = document.createElement("div");
div.classList.add("roller");
this.parent.appendChild(div);
div.appendChild(el);
div.appendChild(el.cloneNode(true));
// if ( this.effects.vcr.enabled ) {
// div.appendChild(this.effects.vcr.node);
// }
this.effects.roll = {
enabled: true,
wrapper: this.parent,
node: div,
original: el
};
}
}
generateVCRNoise() {
const canvas = this.effects.vcr.node;
const config = this.effects.vcr.config;
const div = this.effects.vcr.node;
if ( config.fps >= 60 ) {
cancelAnimationFrame(this.vcrInterval);
const animate = () => {
this.renderTrackingNoise();
this.vcrInterval = requestAnimationFrame(animate);
};
animate();
} else {
clearInterval(this.vcrInterval);
this.vcrInterval = setInterval(() => {
this.renderTrackingNoise();
}, 1000 / config.fps);
}
}
// Generate CRT noise
generateSnow(ctx) {
var w = ctx.canvas.width,
h = ctx.canvas.height,
d = ctx.createImageData(w, h),
b = new Uint32Array(d.data.buffer),
len = b.length;
for (var i = 0; i < len; i++) {
b[i] = ((255 * Math.random()) | 0) << 24;
}
ctx.putImageData(d, 0, 0);
}
renderTrackingNoise(radius = 2, xmax, ymax) {
const canvas = this.effects.vcr.node;
const ctx = this.effects.vcr.ctx;
const config = this.effects.vcr.config;
let posy1 = config.miny || 0;
let posy2 = config.maxy || canvas.height;
let posy3 = config.miny2 || 0;
const num = config.num || 20;
if ( xmax === undefined ) {
xmax = canvas.width;
}
if ( ymax === undefined ) {
ymax = canvas.height;
}
canvas.style.filter = `blur(${config.blur}px)`;
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = `#fff`;
ctx.beginPath();
for (var i = 0; i <= num; i++) {
var x = Math.random(i) * xmax;
var y1 = getRandomInt(posy1+=3, posy2);
var y2 = getRandomInt(0, posy3-=3);
ctx.fillRect(x, y1, radius, radius);
ctx.fillRect(x, y2, radius, radius);
ctx.fill();
this.renderTail(ctx, x, y1, radius);
this.renderTail(ctx, x, y2, radius);
}
ctx.closePath();
}
renderTail(ctx, x, y, radius) {
const n = getRandomInt(1, 50);
const dirs = [1, -1];
let rd = radius;
const dir = dirs[Math.floor(Math.random() * dirs.length)];
for (let i = 0; i < n; i++) {
const step = 0.01;
let r = getRandomInt((rd -= step), radius);
let dx = getRandomInt(1, 4);
radius -= 0.1;
dx *= dir;
ctx.fillRect((x += dx), y, r, r);
ctx.fill();
}
}
}
const screen = new ScreenEffect("#screen", {
});
const gui = new dat.GUI();
const config = {
effects: {
roll: {
enabled: false,
options: {
speed: 1000
}
},
image: {
enabled: true,
options: {
src: "https://images.unsplash.com/photo-1505977404378-3a0e28ec6488?ixlib=rb-1.2.1&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ",
blur: 1.2
}
},
vignette: { enabled: true },
scanlines: { enabled: true },
vcr: {
enabled: true,
options: {
opacity: 1,
miny: 220,
miny2: 220,
num: 70,
fps: 60
}
},
wobbley: { enabled: true },
snow: {
enabled: true,
options: {
opacity: 0.2
}
},
},
};
const f1 = gui.addFolder("Effects");
const f2 = gui.addFolder("Snow");
const f3 = gui.addFolder("VCR");
const f4 = gui.addFolder("Roll");
const f5 = gui.addFolder("Image");
for ( const effect in config.effects ) {
const type = config.effects[effect];
f1.add(type, "enabled").name(effect).onChange(bool => {
if ( bool ) {
screen.add(effect, config.effects[effect].options);
} else {
screen.remove(effect);
}
});
if ( type.options ) {
let folder = effect === "vcr" || effect === "video" ? f3 : f2;
for ( const p in type.options ) {
if ( p === "speed" ) {
f4.add(type.options, p).min(100).step(1).max(10000).onChange(val => {
screen.effects[effect].node.style.animationDuration = `${val}ms`;
});
}
if ( p === "opacity" ) {
folder.add(type.options, p).name(`${effect} opacity`).min(0).step(0.1).max(1).onChange(val => {
screen.effects[effect].node.style.opacity = val;
});
}
if ( p === "miny" ) {
folder.add(type.options, p).name(`tracking`).min(0).step(0.1).max(400).onChange(val => {
screen.effects[effect].config.miny = val;
screen.effects[effect].config.miny2 = 400 - val;
});
}
if ( p === "num" ) {
folder.add(type.options, p).name(`tape age`).min(1).step(0.1).max(100).onChange(val => {
screen.effects[effect].config.num = val;
});
}
if ( p === "blur" ) {
f5.add(type.options, p).name(`blur`).min(1).step(0.1).max(5).onChange(val => {
if ( effect === "vcr" ) {
screen.effects[effect].config.blur = val;
} else {
screen.effects[effect].node.style.filter = `blur(${val}px)`;
}
});
}
}
}
}
f1.open();
f2.open();
f3.open();
f4.open();
f5.open();
setTimeout(() => {
for ( const prop in config.effects ) {
if ( !!config.effects[prop].enabled ) {
screen.add(prop, config.effects[prop].options);
}
}
}, 1000);
Also see: Tab Triggers