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mirror of git://f0xx.org/ac/ac-be-hub synced 2026-07-29 04:59:44 +03:00
This commit is contained in:
Anton Afanasyeu
2026-06-23 12:29:37 +02:00
commit 6013b848c5
56 changed files with 6942 additions and 0 deletions

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assets/hub-globe.js Normal file
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/**
* Hub landing globe — orthographic Canvas2D (globe3d=1).
* Grid: hub SVG ellipses (EW) + meridian paths (NS) traced on sphere, then Y-rotated.
* Land: ortho hub disk on front face; mercator-flat only on back wrap (avoids front squeeze).
*/
export const GLOBE_VIEW = { imgW: 1920, imgH: 1080, cx: 720, cy: 560, r: 322, rim: 330 };
const AUTO_SPIN_RAD_S = 0.035;
const DRAG_ROTATION_PER_PX = 0.004;
const OCEAN_FALLBACK = { r: 22, g: 38, b: 60 };
const FRONT_Z = 0.04;
const RASTER_SCALE = 2;
const AXIS_STEPS = 160;
/** hub-logo-fragment-globe-grid-overlay.svg — EW parallels. */
const HUB_EW_PARALLELS = [
{ cx: 720, cy: 560, rx: 318, ry: 11, bright: true },
{ cx: 720, cy: 392, rx: 260, ry: 39, bright: false },
{ cx: 720, cy: 728, rx: 260, ry: 39, bright: false },
];
/** Same SVG — NS meridians (line + quadratic beziers). */
const HUB_NS_MERIDIANS = [
{ prime: true, points: sampleLinePoints(720, 248, 720, 872, AXIS_STEPS) },
{ prime: false, points: sampleQuadPoints(620, 248, 358, 560, 620, 872, AXIS_STEPS) },
{ prime: false, points: sampleQuadPoints(820, 248, 1082, 560, 820, 872, AXIS_STEPS) },
];
function sampleLinePoints(x0, y0, x1, y1, steps) {
const pts = [];
for (let i = 0; i <= steps; i++) {
const t = i / steps;
pts.push({ x: x0 + (x1 - x0) * t, y: y0 + (y1 - y0) * t });
}
return pts;
}
function sampleQuadPoints(x0, y0, cx, cy, x1, y1, steps) {
const pts = [];
for (let i = 0; i <= steps; i++) {
const t = i / steps;
const u = 1 - t;
pts.push({
x: u * u * x0 + 2 * u * t * cx + t * t * x1,
y: u * u * y0 + 2 * u * t * cy + t * t * y1,
});
}
return pts;
}
function hubAsset(rel, build) {
const link = document.querySelector('link[href*="hub.css"]');
const base = link ? (link.getAttribute('href') || '').replace(/[^/]*$/, '') : '';
const sep = rel.indexOf('?') >= 0 ? '&' : '?';
return base + rel + sep + 'v=' + build;
}
export function globeCoverRect() {
const vw = window.innerWidth;
const vh = window.innerHeight;
const scale = Math.max(vw / GLOBE_VIEW.imgW, vh / GLOBE_VIEW.imgH);
const drawW = GLOBE_VIEW.imgW * scale;
const drawH = GLOBE_VIEW.imgH * scale;
const offX = (vw - drawW) / 2;
const offY = (vh - drawH) / 2;
const left = offX + (GLOBE_VIEW.cx - GLOBE_VIEW.r) * scale;
const top = offY + (GLOBE_VIEW.cy - GLOBE_VIEW.r) * scale;
const size = GLOBE_VIEW.r * 2 * scale;
return {
left,
top,
width: size,
height: size,
scale,
cx: GLOBE_VIEW.cx * scale + offX,
cy: GLOBE_VIEW.cy * scale + offY,
r: GLOBE_VIEW.r * scale,
rim: GLOBE_VIEW.rim * scale,
};
}
function loadImage(url) {
return new Promise((resolve, reject) => {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = () => reject(new Error('image load failed: ' + url));
img.src = url;
});
}
function rasterizeImage(img, w, h, scale) {
const s = scale || 1;
const rw = Math.max(1, Math.round(w * s));
const rh = Math.max(1, Math.round(h * s));
const c = document.createElement('canvas');
c.width = rw;
c.height = rh;
const ctx = c.getContext('2d', { willReadFrequently: true });
ctx.imageSmoothingEnabled = true;
ctx.imageSmoothingQuality = 'high';
ctx.drawImage(img, 0, 0, rw, rh);
return { data: ctx.getImageData(0, 0, rw, rh).data, w: rw, h: rh };
}
function sampleImageDataBilinear(imgData, w, h, fx, fy) {
const x = Math.max(0, Math.min(w - 1.001, fx));
const y = Math.max(0, Math.min(h - 1.001, fy));
const x0 = x | 0;
const y0 = y | 0;
const x1 = Math.min(w - 1, x0 + 1);
const y1 = Math.min(h - 1, y0 + 1);
const tx = x - x0;
const ty = y - y0;
const i00 = (y0 * w + x0) * 4;
const i10 = (y0 * w + x1) * 4;
const i01 = (y1 * w + x0) * 4;
const i11 = (y1 * w + x1) * 4;
const out = [0, 0, 0, 0];
for (let c = 0; c < 4; c++) {
out[c] = Math.round(
imgData[i00 + c] * (1 - tx) * (1 - ty) +
imgData[i10 + c] * tx * (1 - ty) +
imgData[i01 + c] * (1 - tx) * ty +
imgData[i11 + c] * tx * ty
);
}
return out;
}
function inverseRotateY(nx, ny, nz, rotY) {
const cosR = Math.cos(rotY);
const sinR = Math.sin(rotY);
return {
x: nx * cosR - nz * sinR,
y: ny,
z: nx * sinR + nz * cosR,
};
}
function bodyToTex(body) {
return { x: body.x, y: -body.y, z: body.z };
}
function bodyToView(body, rotY) {
const cosR = Math.cos(rotY);
const sinR = Math.sin(rotY);
return {
x: body.x * cosR + body.z * sinR,
y: body.y,
z: -body.x * sinR + body.z * cosR,
};
}
/** Hub disk pixel → unit-sphere body (front hemisphere, matches globe3d=0). */
function hubPixelToBody(hpX, hpY) {
const texX = (hpX - GLOBE_VIEW.cx) / GLOBE_VIEW.r;
const texY = (GLOBE_VIEW.cy - hpY) / GLOBE_VIEW.r;
const rr = texX * texX + texY * texY;
if (rr > 1.001) {
return null;
}
return {
x: texX,
y: -texY,
z: Math.sqrt(Math.max(0, 1 - rr)),
};
}
function hubPointsToBodyRing(points) {
const out = [];
for (let i = 0; i < points.length; i++) {
const body = hubPixelToBody(points[i].x, points[i].y);
if (body) {
out.push(body);
}
}
return out;
}
function ellipseBodyRing(ellipse, steps) {
const out = [];
for (let i = 0; i <= steps; i++) {
const a = (i / steps) * Math.PI * 2;
const body = hubPixelToBody(
ellipse.cx + ellipse.rx * Math.cos(a),
ellipse.cy + ellipse.ry * Math.sin(a)
);
if (body) {
out.push(body);
}
}
return out;
}
function parallelStyle(bright, scale, z) {
const t = Math.max(0, Math.min(1, (z - FRONT_Z) / (0.95 - FRONT_Z)));
if (t <= 0) {
return null;
}
const alpha = bright ? 0.55 + 0.45 * t : 0.35 + 0.5 * t;
const rgb = bright ? '219,231,246' : '231,236,243';
return {
color: 'rgba(' + rgb + ',' + alpha.toFixed(3) + ')',
width: Math.max(bright ? 3 : 2, scale * (bright ? 0.009 : 0.006)) * (0.5 + 0.5 * t),
};
}
function meridianStyle(prime, scale, z) {
const t = Math.max(0, Math.min(1, (z - FRONT_Z) / (0.95 - FRONT_Z)));
if (t <= 0) {
return null;
}
const alpha = prime ? 0.5 + 0.48 * t : 0.3 + 0.45 * t;
return {
color: 'rgba(238,245,255,' + alpha.toFixed(3) + ')',
width: Math.max(prime ? 3 : 2.5, scale * (prime ? 0.0095 : 0.008)) * (0.45 + 0.55 * t),
};
}
function strokeBodyRing(ctx, cx, cy, r, rotY, bodies, styleAt) {
let run = [];
function flush() {
if (run.length < 2) {
run = [];
return;
}
let zSum = 0;
for (let i = 0; i < run.length; i++) {
zSum += run[i].z;
}
const style = styleAt(zSum / run.length);
if (!style) {
run = [];
return;
}
ctx.beginPath();
ctx.moveTo(run[0].sx, run[0].sy);
for (let i = 1; i < run.length; i++) {
ctx.lineTo(run[i].sx, run[i].sy);
}
ctx.strokeStyle = style.color;
ctx.lineWidth = style.width;
ctx.lineCap = 'round';
ctx.lineJoin = 'round';
ctx.stroke();
run = [];
}
for (let i = 0; i < bodies.length; i++) {
const view = bodyToView(bodies[i], rotY);
if (view.z <= FRONT_Z) {
flush();
continue;
}
run.push({
sx: cx + view.x * r,
sy: cy - view.y * r,
z: view.z,
});
}
flush();
}
/** Hub SVG grid: EW ellipses + NS meridian paths (matches globe3d=0 artwork geometry). */
function drawHubGrid(ctx, cx, cy, r, rotY, layoutScale) {
ctx.save();
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.clip();
HUB_EW_PARALLELS.forEach(function (ellipse) {
strokeBodyRing(ctx, cx, cy, r, rotY, ellipseBodyRing(ellipse, AXIS_STEPS), function (z) {
return parallelStyle(ellipse.bright, layoutScale, z);
});
});
HUB_NS_MERIDIANS.forEach(function (mer) {
strokeBodyRing(ctx, cx, cy, r, rotY, hubPointsToBodyRing(mer.points), function (z) {
return meridianStyle(mer.prime, layoutScale, z);
});
});
ctx.restore();
}
function sampleHub(layer, tex) {
const hp = {
x: GLOBE_VIEW.cx + tex.x * GLOBE_VIEW.r,
y: GLOBE_VIEW.cy - tex.y * GLOBE_VIEW.r,
};
const sx = (hp.x / GLOBE_VIEW.imgW) * (layer.w - 1);
const sy = (hp.y / GLOBE_VIEW.imgH) * (layer.h - 1);
return sampleImageDataBilinear(layer.data, layer.w, layer.h, sx, sy);
}
function texLonLat(tex) {
return {
lon: Math.atan2(tex.x, tex.z),
lat: Math.asin(Math.max(-1, Math.min(1, tex.y))),
};
}
function sampleMercFlat(mercFlat, lon, lat) {
const u = ((lon + Math.PI) / (2 * Math.PI)) * (mercFlat.w - 1);
const v = (0.5 - lat / Math.PI) * (mercFlat.h - 1);
return sampleImageDataBilinear(mercFlat.data, mercFlat.w, mercFlat.h, u, v);
}
function isLandPixel(r, g, b, a) {
return a > 10 && r > 100 && g < 140 && b < 140;
}
/** Light hub grid strokes baked into hub-logo-fragment-globe.svg (vector grid drawn separately). */
function isGridPixel(r, g, b, a) {
if (a < 12) {
return false;
}
const lum = r * 0.299 + g * 0.587 + b * 0.114;
if (lum < 125) {
return false;
}
if (g < 155 || b < 155) {
return false;
}
return Math.max(r, g, b) - Math.min(r, g, b) < 85;
}
function sampleOceanRgba(globe, tex) {
if (tex.z <= FRONT_Z) {
return [OCEAN_FALLBACK.r, OCEAN_FALLBACK.g, OCEAN_FALLBACK.b, 255];
}
const s = sampleHub(globe, tex);
if (s[3] > 8 && !isGridPixel(s[0], s[1], s[2], s[3])) {
return [s[0], s[1], s[2], 255];
}
return [OCEAN_FALLBACK.r, OCEAN_FALLBACK.g, OCEAN_FALLBACK.b, 255];
}
function sampleLandRgba(continents, mercFlat, tex) {
if (tex.z > FRONT_Z) {
const ortho = sampleHub(continents, tex);
if (ortho[3] > 6) {
return ortho;
}
return null;
}
if (tex.z > -FRONT_Z) {
return null;
}
const ll = texLonLat(tex);
const flat = sampleMercFlat(mercFlat, ll.lon, ll.lat);
if (isLandPixel(flat[0], flat[1], flat[2], flat[3])) {
return [flat[0], flat[1], flat[2], Math.min(255, flat[3])];
}
return null;
}
function fillDiskRegion(ctx, cx, cy, r, rotY, fn) {
const r2 = r * r;
const x0 = Math.max(0, Math.floor(cx - r));
const y0 = Math.max(0, Math.floor(cy - r));
const x1 = Math.min(ctx.canvas.width - 1, Math.ceil(cx + r));
const y1 = Math.min(ctx.canvas.height - 1, Math.ceil(cy + r));
const w = x1 - x0 + 1;
const h = y1 - y0 + 1;
if (w <= 0 || h <= 0) {
return null;
}
const out = ctx.createImageData(w, h);
const px = out.data;
let p = 0;
for (let dy = y0; dy <= y1; dy++) {
for (let dx = x0; dx <= x1; dx++) {
const ox = dx - cx;
const oy = dy - cy;
if (ox * ox + oy * oy > r2) {
px[p++] = 0;
px[p++] = 0;
px[p++] = 0;
px[p++] = 0;
continue;
}
const nx = ox / r;
const ny = oy / r;
const nz = Math.sqrt(Math.max(0, 1 - nx * nx - ny * ny));
const tex = bodyToTex(inverseRotateY(nx, ny, nz, rotY));
const rgba = fn(tex);
px[p++] = rgba[0];
px[p++] = rgba[1];
px[p++] = rgba[2];
px[p++] = rgba[3] !== undefined ? rgba[3] : 255;
}
}
return { out, x0, y0 };
}
function blitLayer(ctx, cx, cy, r, layer) {
if (!layer) {
return;
}
const { out, x0, y0 } = layer;
const w = out.width;
const h = out.height;
const src = out.data;
ctx.save();
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.clip();
const existing = ctx.getImageData(x0, y0, w, h);
const dst = existing.data;
for (let i = 0; i < src.length; i += 4) {
const sa = src[i + 3];
if (sa === 0) {
continue;
}
if (sa === 255) {
dst[i] = src[i];
dst[i + 1] = src[i + 1];
dst[i + 2] = src[i + 2];
dst[i + 3] = 255;
continue;
}
const a = sa / 255;
dst[i] = Math.round(src[i] * a + dst[i] * (1 - a));
dst[i + 1] = Math.round(src[i + 1] * a + dst[i + 1] * (1 - a));
dst[i + 2] = Math.round(src[i + 2] * a + dst[i + 2] * (1 - a));
dst[i + 3] = 255;
}
ctx.putImageData(existing, x0, y0);
ctx.restore();
}
function drawRim(ctx, globeImg, cx, cy, r, rim, layoutScale) {
const drawW = GLOBE_VIEW.imgW * layoutScale;
const drawH = GLOBE_VIEW.imgH * layoutScale;
const dx = cx - GLOBE_VIEW.cx * layoutScale;
const dy = cy - GLOBE_VIEW.cy * layoutScale;
ctx.save();
ctx.beginPath();
ctx.arc(cx, cy, rim, 0, Math.PI * 2);
ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
ctx.clip();
ctx.drawImage(globeImg, 0, 0, GLOBE_VIEW.imgW, GLOBE_VIEW.imgH, dx, dy, drawW, drawH);
ctx.restore();
}
export async function mountHubGlobe(stage, opts) {
const build = opts.build || 'earth3d';
const reducedMotion = !!opts.reducedMotion;
const canvas = document.createElement('canvas');
canvas.className = 'hub-globe-canvas';
canvas.setAttribute('aria-hidden', 'true');
stage.appendChild(canvas);
const urls = {
globe: hubAsset('assets/hub-logo-fragment-globe.svg', build),
continents: hubAsset('assets/hub-logo-continents-mercator-globe.svg', build),
mercatorFlat: hubAsset('assets/hub-logo-continents-mercator-flat.svg', build),
};
let globeImg;
let continentsImg;
let mercatorFlatImg;
try {
[globeImg, continentsImg, mercatorFlatImg] = await Promise.all([
loadImage(urls.globe),
loadImage(urls.continents),
loadImage(urls.mercatorFlat),
]);
} catch (e) {
console.warn('HubGlobe: asset load failed', e);
canvas.remove();
return null;
}
const globe = rasterizeImage(globeImg, GLOBE_VIEW.imgW, GLOBE_VIEW.imgH, RASTER_SCALE);
const continents = rasterizeImage(continentsImg, GLOBE_VIEW.imgW, GLOBE_VIEW.imgH, RASTER_SCALE);
const mercW = (mercatorFlatImg.naturalWidth || 800) * 2;
const mercH = (mercatorFlatImg.naturalHeight || 519) * 2;
const mercFlat = rasterizeImage(mercatorFlatImg, mercW, mercH, 1);
let rotation = typeof opts.initialRotationY === 'number' ? opts.initialRotationY : 0;
let angularVelocity = reducedMotion ? 0 : AUTO_SPIN_RAD_S;
let dragging = false;
let lastPointerX = 0;
let lastPointerTime = 0;
let raf = 0;
let lastFrame = performance.now();
const ctx = canvas.getContext('2d', { willReadFrequently: true });
const resize = () => {
const rect = globeCoverRect();
const dpr = Math.min(window.devicePixelRatio || 1, 2);
const px = Math.max(64, Math.floor(rect.width * dpr));
canvas.style.left = rect.left + 'px';
canvas.style.top = rect.top + 'px';
canvas.style.width = rect.width + 'px';
canvas.style.height = rect.height + 'px';
canvas.width = px;
canvas.height = px;
return { rect, dpr, px };
};
let layout = resize();
window.addEventListener('resize', () => {
layout = resize();
});
const render = () => {
const { rect, dpr, px } = layout;
const cx = (rect.cx - rect.left) * dpr;
const cy = (rect.cy - rect.top) * dpr;
const r = rect.r * dpr;
const rim = rect.rim * dpr;
const layoutScale = rect.scale * dpr;
ctx.clearRect(0, 0, px, px);
blitLayer(
ctx,
cx,
cy,
r,
fillDiskRegion(ctx, cx, cy, r, rotation, function (tex) {
return sampleOceanRgba(globe, tex);
})
);
blitLayer(
ctx,
cx,
cy,
r,
fillDiskRegion(ctx, cx, cy, r, rotation, function (tex) {
const l = sampleLandRgba(continents, mercFlat, tex);
return l || [0, 0, 0, 0];
})
);
drawHubGrid(ctx, cx, cy, r, rotation, layoutScale);
drawRim(ctx, globeImg, cx, cy, r, rim, layoutScale);
ctx.save();
ctx.beginPath();
ctx.arc(cx, cy, r, 0, Math.PI * 2);
ctx.strokeStyle = 'rgba(10,14,20,0.55)';
ctx.lineWidth = Math.max(2, layoutScale * 0.006);
ctx.stroke();
ctx.restore();
};
const onPointerDown = (ev) => {
if (ev.button !== 0) return;
dragging = true;
lastPointerX = ev.clientX;
lastPointerTime = performance.now();
canvas.setPointerCapture(ev.pointerId);
canvas.classList.add('is-dragging');
ev.preventDefault();
};
const onPointerMove = (ev) => {
if (!dragging) return;
const now = performance.now();
const dx = ev.clientX - lastPointerX;
rotation += dx * DRAG_ROTATION_PER_PX;
if (now > lastPointerTime) {
const inst = (dx * DRAG_ROTATION_PER_PX) / ((now - lastPointerTime) / 1000);
angularVelocity = Math.max(-2.5, Math.min(2.5, inst));
}
lastPointerX = ev.clientX;
lastPointerTime = now;
ev.preventDefault();
};
const endDrag = (ev) => {
if (!dragging) return;
dragging = false;
canvas.classList.remove('is-dragging');
try {
canvas.releasePointerCapture(ev.pointerId);
} catch (ignored) {}
};
canvas.addEventListener('pointerdown', onPointerDown);
canvas.addEventListener('pointermove', onPointerMove);
canvas.addEventListener('pointerup', endDrag);
canvas.addEventListener('pointercancel', endDrag);
const tick = (now) => {
raf = requestAnimationFrame(tick);
const dt = Math.min(0.05, (now - lastFrame) / 1000);
lastFrame = now;
if (!dragging) {
if (!reducedMotion) {
const target = AUTO_SPIN_RAD_S;
angularVelocity += (target - angularVelocity) * 1.2 * dt;
if (Math.abs(angularVelocity - target) < 0.004) angularVelocity = target;
} else {
angularVelocity *= Math.exp(-4 * dt);
}
rotation += angularVelocity * dt;
}
render();
};
raf = requestAnimationFrame(tick);
stage.dataset.globe3d = 'active';
stage.dataset.globeAxis = 'ew-ns-grid';
return {
destroy() {
cancelAnimationFrame(raf);
window.removeEventListener('resize', resize);
canvas.remove();
delete stage.dataset.globe3d;
delete stage.dataset.globeAxis;
},
};
}