first commit

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VersusTune 2020-04-05 15:28:22 +02:00
commit 42778a9d46
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/webGLTest.iml
/.idea/

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>WEBGL Test</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<canvas id="c" width="1900" height="1000"></canvas>
<div class="off-can closed">
<group id="rotate">
<group-label>Rotation</group-label>
</group>
<group id="translate">
<group-label>Transform</group-label>
</group>
<group id="color">
<group-label>Color</group-label>
</group>
<group id="world">
<group-label>World</group-label>
</group>
<group id="draw">
<group-label>Draw</group-label>
</group>
</div>
<div class="settings-icon">&#9776;</div>
<script src="js/utils.js" defer></script>
<script src="js/handler.js"></script>
<script src="js/index.js"></script>
<script src="js/sphere.js"></script>
<script src="js/gui.js"></script>
</body>
</html>

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function $(sel, s) {
return $$(sel, s)[0];
}
function $$(sel, s) {
s = s || document;
return s.querySelectorAll(sel);
}
Node.prototype.addDelegatedEventListener = function (type, aim, cb) {
this.addEventListener(type, (event) => {
let target = event.target;
if (target.matches(aim)) {
cb(event, target);
} else {
let parent = target.closest(aim);
if (parent) {
cb(event, parent);
}
}
})
};
function create(name, content) {
let d = document.createElement(name);
if (content) {
d.innerHTML = content;
}
return d;
}
function append(to, array) {
for (let item in array) {
to.appendChild(array[item]);
}
}
function generateRotationSliders() {
let group = $('#rotate');
generateSlider(["X", "Y", "Z", "X-Inc", "Y-Inc", "Z-Inc"], 0, 360, 0, group, "rotate");
generateCheckBox(["by Beat"], true, group, "rotate");
}
function generateTranslateSliders() {
let group = $('#translate');
generateSlider(["X", "Y", "Z"], -1, 1, 1, group, "translate");
}
function generateColorSliders() {
let group = $('#color');
generateSlider(["R", "G", "B"], 0, 255, 125, group, "color");
generateCheckBox(["by Beat"], true, group, "color");
}
function generateWorldSliders() {
let group = $('#world');
generateSlider(["LightPos-X", "LightPos-Y", "LightPos-Z"], -1, 1, 1, group, "light");
generateSlider(["LightAngle"], 0, 360, 90, group, "light");
}
function generateDrawSliders() {
let group = $('#draw'),
g = "drawMode"
generateSlider(["DrawMode"], 0, 6, 0, group, g);
generateSlider(["Form"], 0, 3, 0, group, g);
generateSlider(["Radius"], 20, 1500, 500, group, g);
generateSlider(["Total"], 0, 200, 50, group, g);
generateSlider(["PointSize"], 1, 10, 2, group, g, .2);
generateSlider(["Smoothing"], 0, 1, 0.8, group, g, .05);
generateSlider(["Steps"], 512, analyser.fftSize / 2, 512, group, g, 256);
generateCheckBox(["Dirty"], false, group, g)
}
function setRotations(changedEl) {
let group = $('#rotate');
let items = ["#X", "#Y", "#Z"];
for (let i in items) {
let el = $(items[i], group);
if (el === changedEl) {
sphereObject.rotationRaw[i] = getValue(el)
}
}
items = ["#X-Inc", "#Y-Inc", "#Z-Inc"];
for (let i in items) {
let el = $(items[i], group);
if (el === changedEl) {
sphereObject.rotateInc[i] = getValue(el) / 360;
}
}
sphereObject.rotateByBeat = $('#rotateby-Beat', group).checked;
}
function setColors() {
let group = $('#color');
sphereObject.color.r = getValue($('#R', group)) / 255;
sphereObject.color.g = getValue($('#G', group)) / 255;
sphereObject.color.b = getValue($('#B', group)) / 255;
sphereObject.colorByBeat = $('#colorby-Beat', group).checked;
}
function setWorld() {
let group = $('#world');
sphereObject.lightPos[0] = getValue($('#LightPos-X', group)) * 0.2;
sphereObject.lightPos[1] = getValue($('#LightPos-Y', group)) * 0.2;
sphereObject.lightPos[2] = getValue($('#LightPos-Z', group)) * 0.2;
lightAngle = getValue($('#LightAngle', group))
}
function setDraw() {
let group = $('#draw');
sphereObject.drawMode = getValue($('#DrawMode', group));
sphereObject.sphereMode = getValue($('#Form', group));
sphereObject.radius = getValue($('#Radius', group));
sphereObject.total = getValue($('#Total', group));
sphereObject.pointSize = getValue($('#PointSize', group));
sphereObject.steps = getValue($('#Steps', group));
sphereObject.dirtyMode = $('#drawModeDirty', group).checked;
analyser.smoothingTimeConstant = getValue($('#Smoothing', group));
}
function setTranslate() {
let group = $('#translate');
let items = ["#X", "#Y", "#Z"];
for (let i in items) {
sphereObject.translate[i] = getValue($(items[i], group))
}
}
function generateSlider(fromList, min, max, value, appendTo, group, stepSize) {
for (let i = 0; i < fromList.length; i++) {
let label = create("label", fromList[i]);
let reset = create("button", "d");
let range = create("input");
range.type = "range";
range.min = min;
range.max = max;
range.value = value;
range.id = fromList[i];
range.step = max === 1 ? .01 : (stepSize || 1);
range.dataset.group = group;
range.dataset.value = value;
let item = create("group-input");
append(item, [label, range, reset])
appendTo.appendChild(item);
}
}
function generateCheckBox(fromList, defaultValue, appendTo, group) {
for (let i = 0; i < fromList.length; i++) {
let label = create("label", fromList[i])
let checkbox = create("input");
checkbox.type = "checkbox";
checkbox.checked = defaultValue === true;
checkbox.dataset.group = group;
checkbox.id = group + fromList[i].split(" ").join("-");
let item = create("group-input");
append(item, [label, createSwitch(checkbox)])
appendTo.appendChild(item);
}
}
function createSwitch(checkbox) {
let swi = create("switch");
let label = create("label");
label.setAttribute("for", checkbox.id);
append(swi, [checkbox, label]);
return swi;
}
function changeHandler(el) {
let d = el.dataset.group;
if (d === "rotate") {
setRotations(el);
} else if (d === "translate") {
setTranslate();
} else if (d === "color") {
setColors();
} else if (d === "light") {
setWorld();
} else if (d === "drawMode") {
setDraw();
}
}
document.body.addDelegatedEventListener('input', 'group-input input', (ev, el) => {
changeHandler(el);
})
document.body.addDelegatedEventListener('click', 'group-input button', (ev, el) => {
let input = $('input', el.parentNode);
input.value = input.dataset.value;
changeHandler(input);
});
function getValue(slider) {
try {
return parseFloat(slider.value);
} catch (e) {
return 0;
}
}
$('.settings-icon').addEventListener('click', function () {
$('.off-can').classList.toggle("closed");
})

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class Shaders {
constructor(gl) {
this.gl = gl;
this.shaderNames = [];
this.shaders = {};
this.programs = {};
}
async loadShader(name, path) {
this.shaderNames.push(name);
await this.load(name, path + name + ".vert", this.gl.VERTEX_SHADER);
await this.load(name, path + name + ".frag", this.gl.FRAGMENT_SHADER);
}
async load(name, url, type) {
let realName = name + "_" + type;
if (!this.shaders[realName]) {
let data = await fetch(url);
let shader = this.createShader(await data.text(), type);
if (shader) {
this.shaders[realName] = shader;
}
}
return !!this.shaders[realName];
}
getShader(name, type) {
let realName = name + "_" + type;
return this.shaders[realName];
}
getAllShaders() {
return this.shaderNames;
}
async createProgramForEach(arr) {
arr = arr || this.shaderNames;
for (let i = 0; i < arr.length; i++) {
let shader = arr[i];
let v = await shaderHandler.createProgram(shader, [shader])
if (!v) {
return false;
}
}
return true;
}
createShader(source, type) {
let gl = this.gl;
let shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
return shader;
}
console.error(gl.getShaderInfoLog(shader));
gl.deleteShader(shader);
return null;
}
createProgram(name, shaders) {
let gl = this.gl;
let pro = gl.createProgram();
for (let i = 0; i < shaders.length; i++) {
gl.attachShader(pro, this.getShader(shaders[i], gl.VERTEX_SHADER));
gl.attachShader(pro, this.getShader(shaders[i], gl.FRAGMENT_SHADER));
}
gl.linkProgram(pro);
var success = gl.getProgramParameter(pro, gl.LINK_STATUS);
if (success) {
this.programs[name] = pro;
return pro;
}
console.log(gl.getProgramInfoLog(pro));
gl.deleteProgram(pro);
return null;
}
getProgram(name) {
return this.programs[name];
}
}

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let shaderHandler, gl, c, actx, analyser, peak;
let positionData = [];
let positionSize = 8192 * 2 * 2;
function createAudioContextStream(stream) {
let AudioContext = window.AudioContext || window.webkitAudioContext;
if (actx) {
actx.close();
}
actx = new AudioContext();
analyser = actx.createAnalyser();
let Source;
analyser.fftSize = 4096;
analyser.maxDecibels = 0;
analyser.smoothingTimeConstant = .4;
Source = actx.createMediaStreamSource(stream);
Source.connect(analyser);
return null;
}
async function init() {
c = document.body.querySelector('#c');
gl = c.getContext("webgl2");
if (!gl) {
console.error("GL not found");
return false;
}
shaderHandler = new Shaders(gl);
await shaderHandler.loadShader("test", "shaders/");
//sphere shader
await shaderHandler.loadShader("sphere", "shaders/", gl.VERTEX_SHADER);
return shaderHandler.createProgramForEach(["test", "sphere"]);
}
(function () {
navigator.mediaDevices.getUserMedia({audio: true, video: false})
.then(createAudioContextStream).then(e => {
generateRotationSliders();
generateColorSliders();
generateWorldSliders();
generateDrawSliders();
generateTranslateSliders();
init().then(b => {
if (b) {
sphereObject.drawMode = gl.POINTS;
draw();
}
})
});
})();

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function readData() {
let items = analyser.fftSize;
let dataArray = new Float32Array(items);
analyser.getFloatTimeDomainData(dataArray);
let space = 255 / (items + 2);
let pos = [0, 127.5];
let x = space;
peak = 0;
for (let i = 0; i < items; i++) {
let data = (dataArray[i] * 125) + 127.5
if (Math.abs(data) > peak) {
peak = data;
}
pos.push(x);
pos.push(data);
x += space;
}
pos.push(255, 127.5);
positions = pos;
}
let positions = [
Math.random(), Math.random(),
Math.random(), Math.random(),
Math.random(), Math.random(),
];
/*function draw() {
readData();
let program = shaderHandler.getProgram("test");
let positionAttributeLocation = gl.getAttribLocation(program, "a_position");
var colorLocation = gl.getUniformLocation(program, "u_color");
let positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.DYNAMIC_DRAW);
let vao = gl.createVertexArray();
gl.bindVertexArray(vao);
gl.enableVertexAttribArray(positionAttributeLocation);
gl.vertexAttribPointer(
positionAttributeLocation, 2, gl.FLOAT, false, 0, 0);
gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
gl.clearColor(0, 0, 0, 1);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.useProgram(program);
gl.uniform4f(colorLocation, peak / 255, (255 - peak) / 255, .2, 1);
gl.drawArrays(gl.LINE_STRIP, 0, positions.length / 2);
let positionBuffer2 = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer2);
gl.uniform4f(colorLocation, 0, 0, 1, .3);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.DYNAMIC_DRAW);
gl.drawArrays(gl.POINTS, 0, positions.length / 2);
requestAnimationFrame(draw);
}*/
function setupSphere() {
sphereData = [];
let data = readData(),
radData = data[0];
let sin = Math.sin,
cos = Math.cos,
total = sphereObject.total || 50,
cTotal = (total + 1) * (total + 1),
r = sphereObject.radius || 1000,
rx = r / c.width,
ry = r / c.height,
counter = 0;
for (let i = 1; i <= total; i++) {
let lat = VTUtils.map(i, 0, total, 0, Math.PI, false);
for (let j = 1; j <= total; j++) {
let lon = VTUtils.map(j, 0, total, 0, Math.TWO_PI, false);
let map = VTUtils.map(counter, 0, cTotal, 0, radData.length - 1, false);
map = Math.floor(map);
let realRX = rx + radData[map];
let realRY = ry + radData[map];
let x = rx * sin(lon) * cos(lat);
let y = rx * sin(lon) * sin(lat);
let z = ry * cos(lon);
sphereData.push(x);
sphereData.push(y);
sphereData.push(z);
counter++;
}
}
return [VTUtils.hsvToRgb(data[1], 1, 1), data[1]];
}

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let sphereData = [];
Math.HALF_PI = Math.PI / 2;
Math.TWO_PI = Math.PI * 2;
let sphereObject = {
rotationRaw: [0, 0, 0], // degrees
rotation: [0, 0, 0], //radians
rotateInc: [0.0, 0.0, 0.0], //degreesInc
rotateByBeat: true,
translate: [1, 1, 1],
total: 50,
radius: 500,
color: {r: 0, g: 0, b: 0},
colorByBeat: true,
drawMode: 0,
sphereMode: 0,
lightPos: [0, 0, 0],
pointSize: 2,
steps: 512,
dirtyMode: false
}
function readData() {
let items = sphereObject.steps;
let dataArray = new Uint8Array(items);
analyser.getByteFrequencyData(dataArray);
let arr = [];
let sum = 0;
for (let i = 0; i < items; i++) {
let data = dataArray[i] / 255;
arr.push(data * .5);
sum += dataArray[i];
}
return [arr, (sum / items) / 255];
}
let sphereDataVectors = [], lastTotal = 0;
function prepareData() {
let total = sphereObject.total;
if (lastTotal !== total) {
sphereDataVectors = [];
for (let i = 0; i <= total; i++) {
sphereDataVectors[i] = [];
for (let j = 0; j <= total; j++) {
sphereDataVectors[i][j] = new VTVector();
}
}
lastTotal = total;
}
}
function setupSphere() {
sphereData = [];
let data = readData(),
radData = data[0],
map = VTUtils.map,
total = sphereObject.total,
cTotal = (total + 1) * (total + 1),
radius = sphereObject.radius,
rx = radius / c.width,
ry = radius / c.height,
counter = 0;
prepareData();
for (let i = 0; i <= total; i++) {
let lat = map(i, 0, total, 0, Math.PI, false);
for (let j = 0; j <= total; j++) {
let lon = map(j, 0, total, 0, Math.TWO_PI, false);
let rAdd = getAddRad(counter, radData, cTotal);
let realRX = rx + rAdd;
let realRY = ry + rAdd;
let {x, y, z} = sphereMode(lat, lon, i, counter, realRX, realRY);
if (sphereObject.drawMode < 2 || sphereObject.dirtyMode) {
sphereData.push(x, y, z);
} else {
sphereDataVectors[i][j].setXYZ(x, y, z);
}
counter++;
}
}
if (sphereObject.drawMode > 1 && !sphereObject.dirtyMode) {
for (let i = 0; i < total; i++) {
for (let j = 0; j <= total; j++) {
let cur = sphereDataVectors[i][j];
sphereData.push(cur.x, cur.y, cur.z);
cur = sphereDataVectors[i + 1][j];
sphereData.push(cur.x, cur.y, cur.z);
}
}
}
return [VTUtils.peakRGB(data[1] * 2), data[1]];
}
function getAddRad(counter, data, total) {
let mapping, rAdd, map = VTUtils.map;
if (sphereObject.sphereMode === 3) {
let h = total / 2;
if (counter > h) {
mapping = map(counter, h, total, data.length - 1, 0);
} else {
mapping = map(counter, 0, h, 0, data.length - 1);
}
rAdd = data[Math.round(mapping)] || 0;
} else {
mapping = map(counter, 0, total, 0, data.length - 1);
rAdd = data[Math.round(mapping)] || 0;
}
return rAdd;
}
let position, world, color, rotate, light, lightPos, lightAngle = 90;
function prepare(program) {
position = gl.getAttribLocation(program, "a_position");
world = gl.getUniformLocation(program, 'u_world');
color = gl.getUniformLocation(program, "u_color");
light = gl.getUniformLocation(program, "u_light");
rotate = gl.getUniformLocation(program, "u_matrix");
lightPos = gl.getUniformLocation(program, "u_lightPos");
let pointSize = gl.getUniformLocation(program, "u_pointSize");
gl.uniformMatrix4fv(world, false, TDUtils.yRotation(TDUtils.degToRad(lightAngle)));
gl.uniform3fv(light, [0.95, 0.62, 0.094]);
gl.uniform3fv(lightPos, sphereObject.lightPos);
gl.uniform1f(pointSize, sphereObject.pointSize);
}
function draw() {
c.width = window.innerWidth;
c.height = window.innerHeight;
let aspect = c.height / c.width;
let d = setupSphere();
let newColor = d[0];
let program = shaderHandler.getProgram("sphere");
gl.useProgram(program);
prepare(program);
let matrix = [
sphereObject.translate[0] / aspect, 0, 0, 0,
0, sphereObject.translate[1], 0, 0,
0, 0, sphereObject.translate[2], 0,
0, 0, 0, 1
]
matrix = TDUtils.multiply(matrix, TDUtils.xRotation(sphereObject.rotation[0]));
matrix = TDUtils.multiply(matrix, TDUtils.yRotation(sphereObject.rotation[1]));
matrix = TDUtils.multiply(matrix, TDUtils.zRotation(sphereObject.rotation[2]));
gl.uniformMatrix4fv(rotate, false, matrix);
let positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(sphereData), gl.DYNAMIC_DRAW);
let vao = gl.createVertexArray();
gl.bindVertexArray(vao);
gl.enableVertexAttribArray(position);
gl.vertexAttribPointer(position, 3, gl.FLOAT, true, 0, 0);
gl.clearColor(0, 0, 0, 1);
gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.LEQUAL);
gl.clearDepth(2.0)
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.viewport(0, 0, gl.canvas.width, gl.canvas.height);
if (sphereObject.colorByBeat) {
gl.uniform4f(color, newColor.r, newColor.g, 0, 1);
} else {
let cx = sphereObject.color;
gl.uniform4f(color, cx.r, cx.g, cx.b, 1);
}
gl.drawArrays(sphereObject.drawMode || gl.POINTS, 0, sphereData.length / 3);
if (sphereObject.rotateByBeat) {
sphereObject.rotationRaw[1] += d[1];
sphereObject.rotationRaw[0] += newColor.r;
} else {
for (let i = 0; i < 3; i++) {
sphereObject.rotationRaw[i] += sphereObject.rotateInc[i];
}
}
for (let i = 0; i < 3; i++) {
sphereObject.rotation[i] = TDUtils.degToRad(sphereObject.rotationRaw[i])
}
requestAnimationFrame(draw);
}
function sphereMode(lat, lon, i, counter, rx, ry) {
let x, y, z,
sin = Math.sin,
cos = Math.cos;
switch (sphereObject.sphereMode) {
case 0:
case 3:
x = rx * sin(lat) * cos(lon);
y = ry * sin(lat) * sin(lon);
z = ry * cos(lat);
break;
case 1:
x = rx * sin(lon) * cos(lat);
y = ry * sin(lon) * sin(lat);
z = ry * cos(lat);
break;
case 2:
x = rx * sin(lat) * cos(lat);
y = ry * sin(lat) * sin(lat);
z = ry * cos(lon);
break;
}
return {x: x, y: y, z: z};
}

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class VTUtils {
static random(min, max) {
let rand = Math.random();
if (typeof min === 'undefined') {
return rand;
} else if (typeof max === 'undefined') {
if (min instanceof Array) {
return min[Math.floor(rand * min.length)];
} else {
return rand * min;
}
} else {
if (min > max) {
let tmp = min;
min = max;
max = tmp;
}
return rand * (max - min) + min;
}
};
static randomInt(min, max) {
return Math.floor(VTUtils.random(min, max));
}
static normalize(val, max, min) {
return (val - min) / (max - min);
};
static distance(x, y, x2, y2) {
let a = x - x2;
let b = y - y2;
return Math.sqrt(a * a + b * b);
}
static map(n, start1, stop1, start2, stop2, withinBounds) {
let newVal = (n - start1) / (stop1 - start1) * (stop2 - start2) + start2;
if (!withinBounds) {
return newVal;
}
if (start2 < stop2) {
return this.constrain(newVal, start2, stop2);
} else {
return this.constrain(newVal, stop2, start2);
}
};
static constrain(n, low, high) {
return Math.max(Math.min(n, high), low);
}
static hsvToRgb(h, s, v) {
var r, g, b;
var i = Math.floor(h * 6);
var f = h * 6 - i;
var p = v * (1 - s);
var q = v * (1 - f * s);
var t = v * (1 - (1 - f) * s);
switch (i % 6) {
case 0:
r = v, g = t, b = p;
break;
case 1:
r = q, g = v, b = p;
break;
case 2:
r = p, g = v, b = t;
break;
case 3:
r = p, g = q, b = v;
break;
case 4:
r = t, g = p, b = v;
break;
case 5:
r = v, g = p, b = q;
break;
}
return {r: r, g: g, b: b};
}
static peakRGB(peak) {
return {
r: peak,
g: 1 - peak,
b: 0
};
}
}
class VTVector {
constructor(x, y, z) {
this.x = x || 0;
this.y = y || 0;
this.z = z || 0;
}
//helper
static createRandom(x, y, z) {
x = x || 1;
y = y || 1;
z = z || 0;
return new VTVector(VTUtils.random(-x, x), VTUtils.random(-y, y), VTUtils.random(-z, z));
}
mult(times) {
this.x *= times;
this.y *= times;
this.z *= times;
}
set(vector) {
this.x = vector.x;
this.y = vector.y;
this.z = vector.z;
}
add(vector) {
this.x = this.x + vector.x;
this.y = this.y + vector.y;
this.z = this.z + vector.z;
}
addXYZ(x, y, z) {
this.x += x;
this.y += y;
this.z += z;
}
setXYZ(x,y,z) {
this.x = x || 0;
this.y = y || 0;
this.z = z || 0;
}
clone() {
return new VTVector(this.x, this.y, this.z);
}
}
class TDUtils {
static multiply(a, b) {
let b00 = b[0 * 4 + 0];
let b01 = b[0 * 4 + 1];
let b02 = b[0 * 4 + 2];
let b03 = b[0 * 4 + 3];
let b10 = b[1 * 4 + 0];
let b11 = b[1 * 4 + 1];
let b12 = b[1 * 4 + 2];
let b13 = b[1 * 4 + 3];
let b20 = b[2 * 4 + 0];
let b21 = b[2 * 4 + 1];
let b22 = b[2 * 4 + 2];
let b23 = b[2 * 4 + 3];
let b30 = b[3 * 4 + 0];
let b31 = b[3 * 4 + 1];
let b32 = b[3 * 4 + 2];
let b33 = b[3 * 4 + 3];
let a00 = a[0 * 4 + 0];
let a01 = a[0 * 4 + 1];
let a02 = a[0 * 4 + 2];
let a03 = a[0 * 4 + 3];
let a10 = a[1 * 4 + 0];
let a11 = a[1 * 4 + 1];
let a12 = a[1 * 4 + 2];
let a13 = a[1 * 4 + 3];
let a20 = a[2 * 4 + 0];
let a21 = a[2 * 4 + 1];
let a22 = a[2 * 4 + 2];
let a23 = a[2 * 4 + 3];
let a30 = a[3 * 4 + 0];
let a31 = a[3 * 4 + 1];
let a32 = a[3 * 4 + 2];
let a33 = a[3 * 4 + 3];
let dst = [];
dst[0] = b00 * a00 + b01 * a10 + b02 * a20 + b03 * a30;
dst[1] = b00 * a01 + b01 * a11 + b02 * a21 + b03 * a31;
dst[2] = b00 * a02 + b01 * a12 + b02 * a22 + b03 * a32;
dst[3] = b00 * a03 + b01 * a13 + b02 * a23 + b03 * a33;
dst[4] = b10 * a00 + b11 * a10 + b12 * a20 + b13 * a30;
dst[5] = b10 * a01 + b11 * a11 + b12 * a21 + b13 * a31;
dst[6] = b10 * a02 + b11 * a12 + b12 * a22 + b13 * a32;
dst[7] = b10 * a03 + b11 * a13 + b12 * a23 + b13 * a33;
dst[8] = b20 * a00 + b21 * a10 + b22 * a20 + b23 * a30;
dst[9] = b20 * a01 + b21 * a11 + b22 * a21 + b23 * a31;
dst[10] = b20 * a02 + b21 * a12 + b22 * a22 + b23 * a32;
dst[11] = b20 * a03 + b21 * a13 + b22 * a23 + b23 * a33;
dst[12] = b30 * a00 + b31 * a10 + b32 * a20 + b33 * a30;
dst[13] = b30 * a01 + b31 * a11 + b32 * a21 + b33 * a31;
dst[14] = b30 * a02 + b31 * a12 + b32 * a22 + b33 * a32;
dst[15] = b30 * a03 + b31 * a13 + b32 * a23 + b33 * a33;
return dst;
}
static xRotation(angleInRadians) {
let c = Math.cos(angleInRadians);
let s = Math.sin(angleInRadians);
return [
1, 0, 0, 0,
0, c, s, 0,
0, -s, c, 0,
0, 0, 0, 1,
];
}
static yRotation(angleInRadians) {
let c = Math.cos(angleInRadians);
let s = Math.sin(angleInRadians);
return [
c, 0, -s, 0,
0, 1, 0, 0,
s, 0, c, 0,
0, 0, 0, 1,
];
}
static zRotation(angleInRadians) {
let c = Math.cos(angleInRadians);
let s = Math.sin(angleInRadians);
return [
c, s, 0, 0,
-s, c, 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
];
}
static degToRad(d) {
return d * Math.PI / 180;
}
}

19
shaders/sphere.frag Normal file
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#version 300 es
// fragment shaders don't have a default precision so we need
// to pick one. mediump is a good default. It means "medium precision"
precision highp float;
in vec3 v_surfaceToLight;
uniform vec4 u_color;
uniform vec3 u_lightPos;
out vec4 outColor;
void main() {
vec3 surfaceToLightDirection = normalize(v_surfaceToLight);
outColor = u_color;
float light = 1.0;
//outColor.rgb *= surfaceToLightDirection;
}

21
shaders/sphere.vert Normal file
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#version 300 es
in vec4 a_position;
uniform mat4 u_world;
uniform mat4 u_matrix;
uniform vec3 u_lightPos;
uniform vec3 u_light;
uniform float u_pointSize;
out vec3 v_surfaceToLight;
void main() {
// convert the position from pixels to 0.0 to 1.0
vec4 pos = a_position * u_matrix;
gl_Position = pos;
gl_PointSize = u_pointSize;
vec3 surfaceWorldPosition = (u_world * pos).xyz;
v_surfaceToLight = u_lightPos - surfaceWorldPosition;
}

13
shaders/test.frag Normal file
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#version 300 es
// fragment shaders don't have a default precision so we need
// to pick one. mediump is a good default. It means "medium precision"
precision mediump float;
uniform vec4 u_color;
out vec4 outColor;
void main() {
outColor = u_color;
}

11
shaders/test.vert Normal file
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#version 300 es
in vec2 a_position;
void main() {
// convert the position from pixels to 0.0 to 1.0
vec2 scale = a_position / vec2(255.0, 255.0);
vec2 remap = scale * 2.0;
vec2 space = remap - 1.0;
space.y = space.y * 0.85;
gl_Position = vec4(space, 0,1);
}

215
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html, body {
padding: 0;
margin: 0;
overflow: hidden;
font-size: 16px;
font-family: sans-serif;
}
div {
position: fixed;
color: #fff;
padding: 1em;
}
#c {
width: 100%;
height: 100%;
}
.settings-icon {
right: 0;
bottom: 0;
font-size: 1.5em;
cursor: pointer;
}
.settings-icon:hover {
color: #0199ff;
}
.off-can {
top: 0;
left: 0;
width: 300px;
background-color: rgba(33, 33, 33, 0.6);
height: 100vh;
transition: all .5s;
user-select: none;
}
group {
display: block;
padding-bottom: 10px;
user-select: none;
}
group-label {
display: block;
border-bottom: 1px solid #ffffff;
font-size: 21px;
font-weight: 500;
user-select: none;
}
group-input {
display: flex;
align-items: center;
margin-top: 5px;
user-select: none;
}
group-input label {
padding-right: 10px;
user-select: none;
width: 150px;
}
group-input input {
flex-grow: 1;
user-select: none;
max-width: 150px;
}
group-input button {
border: 1px solid #dcdcdc;
background-color: transparent;
color: #fff;
margin-left: 5px;
}
.closed {
transform: translateX(-350px);
transition: all .5s;
}
input[type=range] {
-webkit-appearance: none;
width: 100%;
}
input[type=range]:focus {
outline: none;
}
input[type=range]::-webkit-slider-runnable-track {
width: 100%;
height: 25.6px;
cursor: pointer;
box-shadow: 1px 1px 1px #000000, 0 0 1px #0d0d0d;
background: #424242;
border-radius: 0;
border: 0 solid #010101;
}
input[type=range]::-webkit-slider-thumb {
box-shadow: 0 0 0 #470000, 0 0 0 #610000;
border: 0 solid #ff0000;
height: 25px;
width: 15px;
border-radius: 0;
background: #a8c64e;
cursor: pointer;
-webkit-appearance: none;
margin-top: 0.3px;
}
input[type=range]:focus::-webkit-slider-runnable-track {
background: #545454;
}
input[type=range]::-moz-range-track {
width: 100%;
height: 25.6px;
cursor: pointer;
box-shadow: 1px 1px 1px #000000, 0 0 1px #0d0d0d;
background: #424242;
border-radius: 0;
border: 0 solid #010101;
}
input[type=range]::-moz-range-thumb {
box-shadow: 0 0 0 #470000, 0 0 0 #610000;
border: 0 solid #ff0000;
height: 25px;
width: 15px;
border-radius: 0;
background: #a8c64e;
cursor: pointer;
}
input[type=range]::-ms-track {
width: 100%;
height: 25.6px;
cursor: pointer;
background: transparent;
border-color: transparent;
color: transparent;
}
input[type=range]::-ms-fill-lower {
background: #303030;
border: 0 solid #010101;
border-radius: 0;
box-shadow: 1px 1px 1px #000000, 0 0 1px #0d0d0d;
}
input[type=range]::-ms-fill-upper {
background: #424242;
border: 0 solid #010101;
border-radius: 0;
box-shadow: 1px 1px 1px #000000, 0 0 1px #0d0d0d;
}
input[type=range]::-ms-thumb {
box-shadow: 0 0 0 #470000, 0 0 0 #610000;
border: 0 solid #ff0000;
width: 15px;
border-radius: 0;
background: #a8c64e;
cursor: pointer;
height: 25px;
}
input[type=range]:focus::-ms-fill-lower {
background: #424242;
}
input[type=range]:focus::-ms-fill-upper {
background: #545454;
}
switch input {
position: absolute;
appearance: none;
opacity: 0;
}
switch label {
display: block;
border-radius: 10px;
width: 40px;
height: 20px;
background-color: #dcdcdc;
position: relative;
cursor: pointer;
padding: 0;
}
switch label:after {
content: '';
background-color: #ff3232;
position: absolute;
top: 2px;
left: 2px;
height: 16px;
width: 16px;
border-radius: 10px;
transition: .5s;
}
switch input:checked + label:after {
transform: translateX(20px);
}