Blast
Label:
Game
Jam Dinding
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<styl>:root {
--main-bg-color: #fff;
--main-text-color: #888888;
}
[data-theme="dark"] {
--main-bg-color: #1e1f26;
--main-text-color: #ccc;
}
* {
box-sizing: border-box;
/* transition: all ease 0.2s; */
}
body {
margin: 0;
height: 100vh;
display: flex;
flex-direction: column;
justify-content: space-between;
align-items: center;
font-size: 16px;
background-color: var(--main-bg-color);
position: relative;
transition: all ease 0.2s;
}
.page-header {
font-size: 2rem;
color: var(--main-text-color);
padding: 2rem 0;
font-family: monospace;
text-transform: uppercase;
letter-spacing: 4px;
transition: all ease 0.2s;
}
.clock {
min-height: 18em;
min-width: 18em;
display: flex;
justify-content: center;
align-items: center;
background-color: var(--main-bg-color);
background-image: url("https://imvpn22.github.io/analog-clock/clock.png");
background-position: center center;
background-size: cover;
border-radius: 50%;
border: 4px solid var(--main-bg-color);
box-shadow: 0 -15px 15px rgba(255, 255, 255, 0.05),
inset 0 -15px 15px rgba(255, 255, 255, 0.05), 0 15px 15px rgba(0, 0, 0, 0.3),
inset 0 15px 15px rgba(0, 0, 0, 0.3);
transition: all ease 0.2s;
}
.clock:before {
content: "";
height: 0.75rem;
width: 0.75rem;
background-color: var(--main-text-color);
border: 2px solid var(--main-bg-color);
position: absolute;
border-radius: 50%;
z-index: 1000;
transition: all ease 0.2s;
}
.hour,
.min,
.sec {
position: absolute;
display: flex;
justify-content: center;
border-radius: 50%;
}
.hour {
height: 10em;
width: 10em;
}
.hour:before {
content: "";
position: absolute;
height: 50%;
width: 6px;
background-color: var(--main-text-color);
border-radius: 6px;
}
.min {
height: 12em;
width: 12em;
}
.min:before {
content: "";
height: 50%;
width: 4px;
background-color: var(--main-text-color);
border-radius: 4px;
}
.sec {
height: 13em;
width: 13em;
}
.sec:before {
content: "";
height: 60%;
width: 2px;
background-color: #f00;
border-radius: 2px;
}
/* Style for theme switch btn */
.switch-cont {
margin: 2em auto;
/* position: absolute; */
bottom: 0;
}
.switch-cont .switch-btn {
font-family: monospace;
text-transform: uppercase;
outline: none;
padding: 0.5rem 1rem;
background-color: var(--main-bg-color);
color: var(--main-text-color);
border: 1px solid var(--main-text-color);
border-radius: 0.25rem;
cursor: pointer;
transition: all ease 0.3s;
}
</style>
</head>
<body>
<!--
Materi Coding Mapel Informatika MAN Kapuas
-->
<div class="page-header"> JAM MAN KAPUAS </div>
<div class="clock">
<div class="hour"></div>
<div class="min"></div>
<div class="sec"></div>
</div>
<div class="switch-cont">
<button class="switch-btn"> Light </button>
</div>
<script>
//
const deg = 6;
const hour = document.querySelector(".hour");
const min = document.querySelector(".min");
const sec = document.querySelector(".sec");
const setClock = () => {
let day = new Date();
let hh = day.getHours() * 30;
let mm = day.getMinutes() * deg;
let ss = day.getSeconds() * deg;
hour.style.transform = `rotateZ(${hh + mm / 12}deg)`;
min.style.transform = `rotateZ(${mm}deg)`;
sec.style.transform = `rotateZ(${ss}deg)`;
};
// first time
setClock();
// Update every 1000 ms
setInterval(setClock, 1000);
const switchTheme = (evt) => {
const switchBtn = evt.target;
if (switchBtn.textContent.toLowerCase() === "light") {
switchBtn.textContent = "dark";
// localStorage.setItem("theme", "dark");
document.documentElement.setAttribute("data-theme", "dark");
} else {
switchBtn.textContent = "light";
// localStorage.setItem("theme", "light"); //add this
document.documentElement.setAttribute("data-theme", "light");
}
};
const switchModeBtn = document.querySelector(".switch-btn");
switchModeBtn.addEventListener("click", switchTheme, false);
let currentTheme = "dark";
// currentTheme = localStorage.getItem("theme")
// ? localStorage.getItem("theme")
// : null;
if (currentTheme) {
document.documentElement.setAttribute("data-theme", currentTheme);
switchModeBtn.textContent = currentTheme;
}
</script>
</body>
</html>
Label:
Animasi
Animasi Hujan Emote
<form action="#" data-js-emojiselect>
<input type="text" placeholder="Enter any Emoji 😄">
<input type="submit" value="Make it Rain! 🌧">
</form>
<stylee>
html, body {
height: 100vh;
width: 100vw;
background: #222;
}
html, body, * {
margin: 0;
padding: 0;
}
form {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
text-align: center;
input {
display: block;
font-size: 2rem;
color: white;
margin: 1rem 0;
padding: 0.5rem 0.75rem;
cursor: pointer;
width: auto;
&[type="text"] {
background: transparent;
border: none;
border-bottom: 2px solid white;
}
&[type="submit"] {
background: transparent;
border: 2px solid white;
}
}
}
.raindrop {
color: white;
position: absolute;
animation-name: fall;
animation-duration: 5s;
}
@keyframes fall {
0% {
margin-top: -20vh;
transform: translateX(0px) scale(1);
}
20% {
transform: translateX(20px) scale(1.5);
}
40% {
transform: translateX(-15px) scale(1.3);
}
60% {
transform: translateX(23px) scale(1.7);
}
80% {
transform: translateX(12px) scale(0.8);
}
100% {
margin-top: 120vh;
transform: translateX(0px) scale(1.2);
}
}
</style>
<script>
const Util = {
getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min)) + min;
},
removeElm(elm) {
elm.parentNode.removeChild(elm);
}
}
const Rain = {
char: '🍆',
container: undefined,
init: function(char) {
this.char = char;
this.container = document.body;
this.fall();
},
fall: function() {
console.log('Rainfall');
const elm = this.createRaindrop();
document.body.appendChild(elm);
setTimeout(() => Rain.fall(), 100);
setTimeout(() => Util.removeElm(elm), 5000);
},
createRaindrop: function() {
const elm = document.createElement('div');
elm.classList.add('raindrop');
elm.appendChild(document.createTextNode(this.char));
const fontSize = Util.getRandomInt(24, 56);
elm.style.fontSize = `${fontSize}px`;
const left = Util.getRandomInt(0, window.innerWidth);
elm.style.left = `${left}px`;
return elm;
},
}
Form = {
init() {
const form = document.querySelector('[data-js-emojiselect]');
form.addEventListener('submit', function(e) {
e.preventDefault();
const char = form.querySelector('input[type="text"]').value;
Util.removeElm(form);
Rain.init(char);
});
}
}
Form.init();
</script>
Label:
Animasi
Animasi Asap
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>Latihan koding</title>
<link rel="stylesheet" href="./style.css">
<stle>
html, body {
overflow: hidden;
}
body {
margin: 0;
position: absolute;
width: 100%;
height: 100%;
}
canvas {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<!-- partial:index.partial.html -->
<canvas></canvas>
<!-- partial -->
<script src="./script.js"></script>
<scrpt>
'use strict';
const canvas =
document.getElementsByTagName('canvas')[0];
canvas.width = canvas.clientWidth;
canvas.height = canvas.clientHeight;
let config = {
TEXTURE_DOWNSAMPLE: 1,
DENSITY_DISSIPATION: 0.98,
VELOCITY_DISSIPATION: 0.99,
PRESSURE_DISSIPATION: 0.8,
PRESSURE_ITERATIONS: 25,
CURL: 30,
SPLAT_RADIUS: 0.005 };
let pointers = [];
let splatStack = [];
const { gl, ext } = getWebGLContext(canvas);
function getWebGLContext(canvas) {
const params = { alpha: false, depth: false, stencil: false, antialias: false };
let gl = canvas.getContext('webgl2', params);
const isWebGL2 = !!gl;
if (!isWebGL2)
gl = canvas.getContext('webgl', params) || canvas.getContext('experimental-webgl', params);
let halfFloat;
let supportLinearFiltering;
if (isWebGL2) {
gl.getExtension('EXT_color_buffer_float');
supportLinearFiltering = gl.getExtension('OES_texture_float_linear');
} else {
halfFloat = gl.getExtension('OES_texture_half_float');
supportLinearFiltering = gl.getExtension('OES_texture_half_float_linear');
}
gl.clearColor(0.0, 0.0, 0.0, 1.0);
const halfFloatTexType = isWebGL2 ? gl.HALF_FLOAT : halfFloat.HALF_FLOAT_OES;
let formatRGBA;
let formatRG;
let formatR;
if (isWebGL2)
{
formatRGBA = getSupportedFormat(gl, gl.RGBA16F, gl.RGBA, halfFloatTexType);
formatRG = getSupportedFormat(gl, gl.RG16F, gl.RG, halfFloatTexType);
formatR = getSupportedFormat(gl, gl.R16F, gl.RED, halfFloatTexType);
} else
{
formatRGBA = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
formatRG = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
formatR = getSupportedFormat(gl, gl.RGBA, gl.RGBA, halfFloatTexType);
}
return {
gl,
ext: {
formatRGBA,
formatRG,
formatR,
halfFloatTexType,
supportLinearFiltering } };
}
function getSupportedFormat(gl, internalFormat, format, type)
{
if (!supportRenderTextureFormat(gl, internalFormat, format, type))
{
switch (internalFormat) {
case gl.R16F:
return getSupportedFormat(gl, gl.RG16F, gl.RG, type);
case gl.RG16F:
return getSupportedFormat(gl, gl.RGBA16F, gl.RGBA, type);
default:
return null;}
}
return {
internalFormat,
format };
}
function supportRenderTextureFormat(gl, internalFormat, format, type) {
let texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 4, 4, 0, format, type, null);
let fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
const status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
if (status != gl.FRAMEBUFFER_COMPLETE)
return false;
return true;
}
function pointerPrototype() {
this.id = -1;
this.x = 0;
this.y = 0;
this.dx = 0;
this.dy = 0;
this.down = false;
this.moved = false;
this.color = [30, 0, 300];
}
pointers.push(new pointerPrototype());
class GLProgram {
constructor(vertexShader, fragmentShader) {
this.uniforms = {};
this.program = gl.createProgram();
gl.attachShader(this.program, vertexShader);
gl.attachShader(this.program, fragmentShader);
gl.linkProgram(this.program);
if (!gl.getProgramParameter(this.program, gl.LINK_STATUS))
throw gl.getProgramInfoLog(this.program);
const uniformCount = gl.getProgramParameter(this.program, gl.ACTIVE_UNIFORMS);
for (let i = 0; i < uniformCount; i++) {
const uniformName = gl.getActiveUniform(this.program, i).name;
this.uniforms[uniformName] = gl.getUniformLocation(this.program, uniformName);
}
}
bind() {
gl.useProgram(this.program);
}}
function compileShader(type, source) {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS))
throw gl.getShaderInfoLog(shader);
return shader;
};
const baseVertexShader = compileShader(gl.VERTEX_SHADER, `
precision highp float;
precision mediump sampler2D;
attribute vec2 aPosition;
varying vec2 vUv;
varying vec2 vL;
varying vec2 vR;
varying vec2 vT;
varying vec2 vB;
uniform vec2 texelSize;
void main () {
vUv = aPosition * 0.5 + 0.5;
vL = vUv - vec2(texelSize.x, 0.0);
vR = vUv + vec2(texelSize.x, 0.0);
vT = vUv + vec2(0.0, texelSize.y);
vB = vUv - vec2(0.0, texelSize.y);
gl_Position = vec4(aPosition, 0.0, 1.0);
}
`);
const clearShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
uniform sampler2D uTexture;
uniform float value;
void main () {
gl_FragColor = value * texture2D(uTexture, vUv);
}
`);
const displayShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
uniform sampler2D uTexture;
void main () {
gl_FragColor = texture2D(uTexture, vUv);
}
`);
const splatShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
uniform sampler2D uTarget;
uniform float aspectRatio;
uniform vec3 color;
uniform vec2 point;
uniform float radius;
void main () {
vec2 p = vUv - point.xy;
p.x *= aspectRatio;
vec3 splat = exp(-dot(p, p) / radius) * color;
vec3 base = texture2D(uTarget, vUv).xyz;
gl_FragColor = vec4(base + splat, 1.0);
}
`);
const advectionManualFilteringShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
uniform sampler2D uVelocity;
uniform sampler2D uSource;
uniform vec2 texelSize;
uniform float dt;
uniform float dissipation;
vec4 bilerp (in sampler2D sam, in vec2 p) {
vec4 st;
st.xy = floor(p - 0.5) + 0.5;
st.zw = st.xy + 1.0;
vec4 uv = st * texelSize.xyxy;
vec4 a = texture2D(sam, uv.xy);
vec4 b = texture2D(sam, uv.zy);
vec4 c = texture2D(sam, uv.xw);
vec4 d = texture2D(sam, uv.zw);
vec2 f = p - st.xy;
return mix(mix(a, b, f.x), mix(c, d, f.x), f.y);
}
void main () {
vec2 coord = gl_FragCoord.xy - dt * texture2D(uVelocity, vUv).xy;
gl_FragColor = dissipation * bilerp(uSource, coord);
gl_FragColor.a = 1.0;
}
`);
const advectionShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
uniform sampler2D uVelocity;
uniform sampler2D uSource;
uniform vec2 texelSize;
uniform float dt;
uniform float dissipation;
void main () {
vec2 coord = vUv - dt * texture2D(uVelocity, vUv).xy * texelSize;
gl_FragColor = dissipation * texture2D(uSource, coord);
gl_FragColor.a = 1.0;
}
`);
const divergenceShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
varying vec2 vL;
varying vec2 vR;
varying vec2 vT;
varying vec2 vB;
uniform sampler2D uVelocity;
vec2 sampleVelocity (in vec2 uv) {
vec2 multiplier = vec2(1.0, 1.0);
if (uv.x < 0.0) { uv.x = 0.0; multiplier.x = -1.0; }
if (uv.x > 1.0) { uv.x = 1.0; multiplier.x = -1.0; }
if (uv.y < 0.0) { uv.y = 0.0; multiplier.y = -1.0; }
if (uv.y > 1.0) { uv.y = 1.0; multiplier.y = -1.0; }
return multiplier * texture2D(uVelocity, uv).xy;
}
void main () {
float L = sampleVelocity(vL).x;
float R = sampleVelocity(vR).x;
float T = sampleVelocity(vT).y;
float B = sampleVelocity(vB).y;
float div = 0.5 * (R - L + T - B);
gl_FragColor = vec4(div, 0.0, 0.0, 1.0);
}
`);
const curlShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
varying vec2 vL;
varying vec2 vR;
varying vec2 vT;
varying vec2 vB;
uniform sampler2D uVelocity;
void main () {
float L = texture2D(uVelocity, vL).y;
float R = texture2D(uVelocity, vR).y;
float T = texture2D(uVelocity, vT).x;
float B = texture2D(uVelocity, vB).x;
float vorticity = R - L - T + B;
gl_FragColor = vec4(vorticity, 0.0, 0.0, 1.0);
}
`);
const vorticityShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
varying vec2 vT;
varying vec2 vB;
uniform sampler2D uVelocity;
uniform sampler2D uCurl;
uniform float curl;
uniform float dt;
void main () {
float T = texture2D(uCurl, vT).x;
float B = texture2D(uCurl, vB).x;
float C = texture2D(uCurl, vUv).x;
vec2 force = vec2(abs(T) - abs(B), 0.0);
force *= 1.0 / length(force + 0.00001) * curl * C;
vec2 vel = texture2D(uVelocity, vUv).xy;
gl_FragColor = vec4(vel + force * dt, 0.0, 1.0);
}
`);
const pressureShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
varying vec2 vL;
varying vec2 vR;
varying vec2 vT;
varying vec2 vB;
uniform sampler2D uPressure;
uniform sampler2D uDivergence;
vec2 boundary (in vec2 uv) {
uv = min(max(uv, 0.0), 1.0);
return uv;
}
void main () {
float L = texture2D(uPressure, boundary(vL)).x;
float R = texture2D(uPressure, boundary(vR)).x;
float T = texture2D(uPressure, boundary(vT)).x;
float B = texture2D(uPressure, boundary(vB)).x;
float C = texture2D(uPressure, vUv).x;
float divergence = texture2D(uDivergence, vUv).x;
float pressure = (L + R + B + T - divergence) * 0.25;
gl_FragColor = vec4(pressure, 0.0, 0.0, 1.0);
}
`);
const gradientSubtractShader = compileShader(gl.FRAGMENT_SHADER, `
precision highp float;
precision mediump sampler2D;
varying vec2 vUv;
varying vec2 vL;
varying vec2 vR;
varying vec2 vT;
varying vec2 vB;
uniform sampler2D uPressure;
uniform sampler2D uVelocity;
vec2 boundary (in vec2 uv) {
uv = min(max(uv, 0.0), 1.0);
return uv;
}
void main () {
float L = texture2D(uPressure, boundary(vL)).x;
float R = texture2D(uPressure, boundary(vR)).x;
float T = texture2D(uPressure, boundary(vT)).x;
float B = texture2D(uPressure, boundary(vB)).x;
vec2 velocity = texture2D(uVelocity, vUv).xy;
velocity.xy -= vec2(R - L, T - B);
gl_FragColor = vec4(velocity, 0.0, 1.0);
}
`);
let textureWidth;
let textureHeight;
let density;
let velocity;
let divergence;
let curl;
let pressure;
initFramebuffers();
const clearProgram = new GLProgram(baseVertexShader, clearShader);
const displayProgram = new GLProgram(baseVertexShader, displayShader);
const splatProgram = new GLProgram(baseVertexShader, splatShader);
const advectionProgram = new GLProgram(baseVertexShader, ext.supportLinearFiltering ? advectionShader : advectionManualFilteringShader);
const divergenceProgram = new GLProgram(baseVertexShader, divergenceShader);
const curlProgram = new GLProgram(baseVertexShader, curlShader);
const vorticityProgram = new GLProgram(baseVertexShader, vorticityShader);
const pressureProgram = new GLProgram(baseVertexShader, pressureShader);
const gradienSubtractProgram = new GLProgram(baseVertexShader, gradientSubtractShader);
function initFramebuffers() {
textureWidth = gl.drawingBufferWidth >> config.TEXTURE_DOWNSAMPLE;
textureHeight = gl.drawingBufferHeight >> config.TEXTURE_DOWNSAMPLE;
const texType = ext.halfFloatTexType;
const rgba = ext.formatRGBA;
const rg = ext.formatRG;
const r = ext.formatR;
density = createDoubleFBO(2, textureWidth, textureHeight, rgba.internalFormat, rgba.format, texType, ext.supportLinearFiltering ? gl.LINEAR : gl.NEAREST);
velocity = createDoubleFBO(0, textureWidth, textureHeight, rg.internalFormat, rg.format, texType, ext.supportLinearFiltering ? gl.LINEAR : gl.NEAREST);
divergence = createFBO(4, textureWidth, textureHeight, r.internalFormat, r.format, texType, gl.NEAREST);
curl = createFBO(5, textureWidth, textureHeight, r.internalFormat, r.format, texType, gl.NEAREST);
pressure = createDoubleFBO(6, textureWidth, textureHeight, r.internalFormat, r.format, texType, gl.NEAREST);
}
function createFBO(texId, w, h, internalFormat, format, type, param) {
gl.activeTexture(gl.TEXTURE0 + texId);
let texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, param);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, param);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, w, h, 0, format, type, null);
let fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0);
gl.viewport(0, 0, w, h);
gl.clear(gl.COLOR_BUFFER_BIT);
return [texture, fbo, texId];
}
function createDoubleFBO(texId, w, h, internalFormat, format, type, param) {
let fbo1 = createFBO(texId, w, h, internalFormat, format, type, param);
let fbo2 = createFBO(texId + 1, w, h, internalFormat, format, type, param);
return {
get read() {
return fbo1;
},
get write() {
return fbo2;
},
swap() {
let temp = fbo1;
fbo1 = fbo2;
fbo2 = temp;
} };
}
const blit = (() => {
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-1, -1, -1, 1, 1, 1, 1, -1]), gl.STATIC_DRAW);
gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, gl.createBuffer());
gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([0, 1, 2, 0, 2, 3]), gl.STATIC_DRAW);
gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(0);
return destination => {
gl.bindFramebuffer(gl.FRAMEBUFFER, destination);
gl.drawElements(gl.TRIANGLES, 6, gl.UNSIGNED_SHORT, 0);
};
})();
let lastTime = Date.now();
multipleSplats(parseInt(Math.random() * 20) + 5);
update();
function update() {
resizeCanvas();
const dt = Math.min((Date.now() - lastTime) / 1000, 0.016);
lastTime = Date.now();
gl.viewport(0, 0, textureWidth, textureHeight);
if (splatStack.length > 0)
multipleSplats(splatStack.pop());
advectionProgram.bind();
gl.uniform2f(advectionProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(advectionProgram.uniforms.uVelocity, velocity.read[2]);
gl.uniform1i(advectionProgram.uniforms.uSource, velocity.read[2]);
gl.uniform1f(advectionProgram.uniforms.dt, dt);
gl.uniform1f(advectionProgram.uniforms.dissipation, config.VELOCITY_DISSIPATION);
blit(velocity.write[1]);
velocity.swap();
gl.uniform1i(advectionProgram.uniforms.uVelocity, velocity.read[2]);
gl.uniform1i(advectionProgram.uniforms.uSource, density.read[2]);
gl.uniform1f(advectionProgram.uniforms.dissipation, config.DENSITY_DISSIPATION);
blit(density.write[1]);
density.swap();
for (let i = 0; i < pointers.length; i++) {
const pointer = pointers[i];
if (pointer.moved) {
splat(pointer.x, pointer.y, pointer.dx, pointer.dy, pointer.color);
pointer.moved = false;
}
}
curlProgram.bind();
gl.uniform2f(curlProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(curlProgram.uniforms.uVelocity, velocity.read[2]);
blit(curl[1]);
vorticityProgram.bind();
gl.uniform2f(vorticityProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(vorticityProgram.uniforms.uVelocity, velocity.read[2]);
gl.uniform1i(vorticityProgram.uniforms.uCurl, curl[2]);
gl.uniform1f(vorticityProgram.uniforms.curl, config.CURL);
gl.uniform1f(vorticityProgram.uniforms.dt, dt);
blit(velocity.write[1]);
velocity.swap();
divergenceProgram.bind();
gl.uniform2f(divergenceProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(divergenceProgram.uniforms.uVelocity, velocity.read[2]);
blit(divergence[1]);
clearProgram.bind();
let pressureTexId = pressure.read[2];
gl.activeTexture(gl.TEXTURE0 + pressureTexId);
gl.bindTexture(gl.TEXTURE_2D, pressure.read[0]);
gl.uniform1i(clearProgram.uniforms.uTexture, pressureTexId);
gl.uniform1f(clearProgram.uniforms.value, config.PRESSURE_DISSIPATION);
blit(pressure.write[1]);
pressure.swap();
pressureProgram.bind();
gl.uniform2f(pressureProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(pressureProgram.uniforms.uDivergence, divergence[2]);
pressureTexId = pressure.read[2];
gl.uniform1i(pressureProgram.uniforms.uPressure, pressureTexId);
gl.activeTexture(gl.TEXTURE0 + pressureTexId);
for (let i = 0; i < config.PRESSURE_ITERATIONS; i++) {
gl.bindTexture(gl.TEXTURE_2D, pressure.read[0]);
blit(pressure.write[1]);
pressure.swap();
}
gradienSubtractProgram.bind();
gl.uniform2f(gradienSubtractProgram.uniforms.texelSize, 1.0 / textureWidth, 1.0 / textureHeight);
gl.uniform1i(gradienSubtractProgram.uniforms.uPressure, pressure.read[2]);
gl.uniform1i(gradienSubtractProgram.uniforms.uVelocity, velocity.read[2]);
blit(velocity.write[1]);
velocity.swap();
gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
displayProgram.bind();
gl.uniform1i(displayProgram.uniforms.uTexture, density.read[2]);
blit(null);
requestAnimationFrame(update);
}
function splat(x, y, dx, dy, color) {
splatProgram.bind();
gl.uniform1i(splatProgram.uniforms.uTarget, velocity.read[2]);
gl.uniform1f(splatProgram.uniforms.aspectRatio, canvas.width / canvas.height);
gl.uniform2f(splatProgram.uniforms.point, x / canvas.width, 1.0 - y / canvas.height);
gl.uniform3f(splatProgram.uniforms.color, dx, -dy, 1.0);
gl.uniform1f(splatProgram.uniforms.radius, config.SPLAT_RADIUS);
blit(velocity.write[1]);
velocity.swap();
gl.uniform1i(splatProgram.uniforms.uTarget, density.read[2]);
gl.uniform3f(splatProgram.uniforms.color, color[0] * 0.3, color[1] * 0.3, color[2] * 0.3);
blit(density.write[1]);
density.swap();
}
function multipleSplats(amount) {
for (let i = 0; i < amount; i++) {
const color = [Math.random() * 10, Math.random() * 10, Math.random() * 10];
const x = canvas.width * Math.random();
const y = canvas.height * Math.random();
const dx = 1000 * (Math.random() - 0.5);
const dy = 1000 * (Math.random() - 0.5);
splat(x, y, dx, dy, color);
}
}
function resizeCanvas() {
if (canvas.width != canvas.clientWidth || canvas.height != canvas.clientHeight) {
canvas.width = canvas.clientWidth;
canvas.height = canvas.clientHeight;
initFramebuffers();
}
}
canvas.addEventListener('mousemove', e => {
pointers[0].moved = pointers[0].down;
pointers[0].dx = (e.offsetX - pointers[0].x) * 10.0;
pointers[0].dy = (e.offsetY - pointers[0].y) * 10.0;
pointers[0].x = e.offsetX;
pointers[0].y = e.offsetY;
});
canvas.addEventListener('touchmove', e => {
e.preventDefault();
const touches = e.targetTouches;
for (let i = 0; i < touches.length; i++) {
let pointer = pointers[i];
pointer.moved = pointer.down;
pointer.dx = (touches[i].pageX - pointer.x) * 10.0;
pointer.dy = (touches[i].pageY - pointer.y) * 10.0;
pointer.x = touches[i].pageX;
pointer.y = touches[i].pageY;
}
}, false);
canvas.addEventListener('mousedown', () => {
pointers[0].down = true;
pointers[0].color = [Math.random() + 0.2, Math.random() + 0.2, Math.random() + 0.2];
});
canvas.addEventListener('touchstart', e => {
e.preventDefault();
const touches = e.targetTouches;
for (let i = 0; i < touches.length; i++) {
if (i >= pointers.length)
pointers.push(new pointerPrototype());
pointers[i].id = touches[i].identifier;
pointers[i].down = true;
pointers[i].x = touches[i].pageX;
pointers[i].y = touches[i].pageY;
pointers[i].color = [Math.random() + 0.2, Math.random() + 0.2, Math.random() + 0.2];
}
});
window.addEventListener('mouseup', () => {
pointers[0].down = false;
});
window.addEventListener('touchend', e => {
const touches = e.changedTouches;
for (let i = 0; i < touches.length; i++)
for (let j = 0; j < pointers.length; j++)
if (touches[i].identifier == pointers[j].id)
pointers[j].down = false;
});
</script>
</body>
</html>
Label:
Animasi
Materi IT 27 September 2025
Latihan CSS pada font
<html>
<head>
<title>Contoh Font Size</title>
</head>
<body>
<h1>Contoh Font Size</h1>
<p class="font-big">Ini adalah paragraf dengan ukuran font besar</p>
<p>Ini adalah paragraf dengan ukuran font normal</p>
<p class="font-small">Ini adalah paragraf dengan ukuran font kecil</p>
<h2>
MAN KAPUAS
</h2>
</body>
</html>
h1 {
font-size: 45px;
color: slateblue;
}
.font-big {
font-size: x-large;
}
.font-small {
font-size: small;
}
h2 {
font-size: 50px;
color: red;
}
body {
font-family: 'Dancing Script', sans-serif;
}
bagian 2 :
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Contoh Font Style</title>
<style>
blockquote {
font-style: italic;
font-size: larger;
color: dodgerblue;
}
cite {
font-size: small;
font-style: normal;
color: fuchsia;
}
</style>
</head>
<body>
<h1>Contoh Font Style</h1>
<blockquote>
"Hidup itu sebentar. Kamu harus bisa tersenyum saat merasakan kepedihan atau kita tak akan pernah melanjutkan hidup".
<cite>~ Jeff Ross</cite>
</blockquote>
</body>
</html>
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