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wheel.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/tinycolor/1.4.1/tinycolor.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jshashes/1.0.7/hashes.min.js"></script>
<script>
function toBase64(v) {
return btoa(encodeURIComponent(v).replace(/%([0-9A-F]{2})/g, (_, v) => {
return String.fromCharCode(parseInt(v, 16));
}))
}
const colorMap = {
"artboard": "hsv(210, 50, 20)",
"ui": "hsv(210, 50, 25)",
"background": "hsv(210, 50, 30)",
"syntax": "#F0F0F0",
"default": "hsv(30, 50, 90)",
"comment": "hsv(210, 30, 60)",
"hidden": "hsv(210, 50, 40)",
"accent": "hsv(180, 100, 90)",
"link": "hsv(210, 60, 100)",
"string": "hsv(150, 100, 90)",
"#h1": "keyword, tag name",
"h1": "hsv(60, 100, 90)", // #E6E600
"#h2": "callable",
"h2": "hsv(180, 100, 70)", // #00B3B3
"#h3": "property",
"h3": "hsv(0, 60, 100)", // #FF6666
"#h4": "type",
"h4": "hsv(270, 60, 100)", // #B366FF
"#h5": "enum, preprocessor, constant",
"h5": "hsv(300, 60, 100)", // #FF66FF
"#h6": "number",
"h6": "hsv(330, 100, 90)" // #E60073
};
const svgSrc = `
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">
<defs>
<style type="text/css">
text {
font-size: 1px;
font-family: monospace;
}
.b { fill: #background; }
.d { fill: #default; }
.c { fill: #comment; }
.h { fill: #hidden; }
.ac { fill: #accent; }
.l { fill: #link; }
.st { fill: #string; }
.h1 { fill: #h1; }
.h2 { fill: #h2; }
.h3 { fill: #h3; }
.h4 { fill: #h4; }
.h5 { fill: #h5; }
.h6 { fill: #h6; }
</style>
</defs>
<rect x="0" y="0" width="90%" height="100%" fill="#background" />
<rect x="90%" y="0" width="10%" height="100%" fill="#artboard" />
<text x="0" y="1">
<tspan x="0" dy="0" class="d">normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h1">h1, keyword, tag</tspan>
<tspan x="0" dy="1" class="d"> normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h2"> h2, callable</tspan>
<tspan x="0" dy="1" class="d"> normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h3"> h3, property</tspan>
<tspan x="0" dy="1" class="d"> normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h4"> h4, type</tspan>
<tspan x="0" dy="1" class="d"> normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h5"> h5, enum, preprocessor, constant</tspan>
<tspan x="0" dy="1" class="d"> normal</tspan>
<tspan class="l">link</tspan>
<tspan class="ac">accent</tspan>
<tspan class="c">comment</tspan>
<tspan class="h">hidden</tspan>
<tspan x="0" dy="1" class="h6"> h6, number</tspan>
<tspan x="0" dy="1" class="st"> string</tspan>
<tspan class="l">with</tspan>
<tspan class="st">escape</tspan>
</text>
</svg>
`;
window.addEventListener('load', () => onResize());
window.addEventListener('resize', onResize);
function onResize() {
const canvas = document.getElementById('wheel');
const cx = cy = canvas.clientWidth;
canvas.width = cx;
canvas.height = cy;
const ctx = canvas.getContext('2d');
const imgData = ctx.createImageData(cx, cy);
let pos = 0;
for (let y = 0; y < cy; y ++) {
for (let x = 0; x < cx; x ++) {
const [dx, dy] = [(x - cx / 2) / cx * 2, (cy / 2 - y) / cy * 2];
const r = Math.sqrt(dx * dx + dy * dy);
if (r < 0.8) {
let radians = Math.atan2(dy, dx);
if (dy < 0) radians += Math.PI * 2;
const angle = radians * 180 / Math.PI;
const color = tinycolor({h: angle, s: 100, v: r / 0.8});
imgData.data[pos ++] = color.toRgb().r;
imgData.data[pos ++] = color.toRgb().g;
imgData.data[pos ++] = color.toRgb().b;
imgData.data[pos ++] = 255;
}
else {
// Background color.
imgData.data[pos ++] = tinycolor(colorMap['background']).toRgb().r;
imgData.data[pos ++] = tinycolor(colorMap['background']).toRgb().g;
imgData.data[pos ++] = tinycolor(colorMap['background']).toRgb().b;
imgData.data[pos ++] = 255;
}
}
}
ctx.putImageData(imgData, 0, 0);
const IGNORE_SEQ = ['hidden', 'artboard', 'ui'];
for (const [colorName, colorVal] of Object.entries(colorMap)) {
// JSON comments
if (colorName.startsWith('#')) continue;
// Not important enough to clutter color wheel
if (IGNORE_SEQ.includes(colorName)) continue;
const color = tinycolor(colorVal).toHsv();
const dx = Math.cos(color.h / 180 * Math.PI) * color.v * 0.8;
const dy = Math.sin(color.h / 180 * Math.PI) * color.v * 0.8;
let x = cx / 2 * (1 + dx);
let y = cy - cy / 2 * (1 + dy);
ctx.fillStyle = tinycolor(colorVal).toHex8String();
ctx.beginPath();
ctx.arc(x, y, 10, 0, 2 * Math.PI, false);
ctx.fill();
ctx.strokeStyle = "#fff";
ctx.stroke();
const text = `${colorName} ${Math.round(color.s * 100)}`;
x += 15;
if (colorName === 'accent') {
x -= 65;
y -= 20;
}
ctx.fillStyle = tinycolor(colorMap['background']).toHex8String();
ctx.font = "12px Arial";
const textWidth = ctx.measureText(text).width;
const textHeight = 12;
ctx.beginPath();
ctx.rect(x - 2, y - textHeight - 2, textWidth + 4, textHeight + 6);
ctx.fill();
ctx.fillStyle = "#fff";
ctx.fillText(text, x, y);
}
let svgSrcPatched = svgSrc;
for (const [colorName, colorVal] of Object.entries(colorMap)) {
if (colorName.startsWith('#')) continue;
const colorHex = tinycolor(colorVal).toHex8String().slice(0, -2);
const pattern = new RegExp(`#${colorName}`, 'g');
svgSrcPatched = svgSrcPatched.replace(pattern, colorHex);
}
const encoded = toBase64(svgSrcPatched);
const data = `data:image/svg+xml;base64,${encoded}`;
document.getElementById('img').src = data;
{
const root = document.getElementById('colorSeq');
root.innerHTML = '';
for (const [colorName, colorVal] of Object.entries(colorMap)) {
if (colorName.startsWith('#')) continue;
const label = document.createElement('div');
const colorHex = tinycolor(colorVal).toHex8String().slice(0, -2);
const colorR = tinycolor(colorVal).toRgb().r;
const colorG = tinycolor(colorVal).toRgb().g;
const colorB = tinycolor(colorVal).toRgb().b;
const colorRGB = `${colorR}, ${colorG}, ${colorB}`;
label.innerHTML = `${colorName} ${colorHex} ${colorRGB}`;
root.appendChild(label);
}
}
}
</script>
<style>
body { margin: 0; }
.container {
display: grid;
justify-content: center;
grid-template-columns: 15vmax 40vmax 40vmax;
}
#colorSeq {
display: inline-block;
}
#img {
width: 100%;
height: auto;
}
#wheel {
width: 100%;
height: auto;
}
</style>
</head>
<body>
<div class="container">
<div id="colorSeq"></div>
<img id="img"></img>
<canvas id="wheel" width=100 height=100></canvas>
</div>
</body>
</html>