mirror of
git://f0xx.org/ac/ac-be-hub
synced 2026-08-09 20:59:23 +03:00
30de8c4638
Match hub grid overlay ring style (border not filled disk). Co-authored-by: Cursor <cursoragent@cursor.com>
1256 lines
34 KiB
JavaScript
1256 lines
34 KiB
JavaScript
/**
|
||
* Hub landing globe — orthographic Canvas2D (?globe3d=N).
|
||
* globe3d=0: flat SVG layers (index.php).
|
||
* globe3d=1: legacy hybrid ortho front + mercator back + hub SVG grid trace.
|
||
* globe3d=2: mercator land attempt + full-sphere grid (superseded).
|
||
* globe3d=3: solid ocean, E–W parallels only (true latitude rings) — no baked grid bleed.
|
||
* globe3d=4: solid ocean, full sphere grid (parallels + meridians).
|
||
* globe3d=5: hub ellipse trace (deprecated — breaks under rotation).
|
||
* globe3d=6: v4 math + latitude band fill (continuous arc paths).
|
||
* globe3d=7: v4 math + wide centerline stroke bands (no fill quads).
|
||
* globe3d=8: hub SVG ellipse trace (breaks under rotation — deprecated).
|
||
* globe3d=9: v4 sphere grid only (thin E–W + N–S) — proper rotation baseline.
|
||
* globe3d=10: v4 visible-arc → screen ellipse (hub ry), disk-clipped.
|
||
*/
|
||
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 LIMB_Z = 0.002;
|
||
const RASTER_SCALE = 2;
|
||
const AXIS_STEPS = 160;
|
||
const SPHERE_AXIS_STEPS = 180;
|
||
|
||
/** Latitudes from hub grid overlay ellipse centers (meridian x = cx). */
|
||
function hubParallelLat(hubCy) {
|
||
const texY = (GLOBE_VIEW.cy - hubCy) / GLOBE_VIEW.r;
|
||
return Math.asin(Math.max(-1, Math.min(1, texY)));
|
||
}
|
||
|
||
const SPHERE_PARALLELS = [
|
||
{ lat: 0, bright: true },
|
||
{ lat: hubParallelLat(392), bright: false },
|
||
{ lat: hubParallelLat(728), bright: false },
|
||
];
|
||
|
||
/** Longitudes at equator from hub N–S meridian artwork (x=620 / x=820). */
|
||
const SPHERE_MERIDIANS = [
|
||
{ lon: 0, prime: true },
|
||
{ lon: Math.atan2((620 - 720) / 322, Math.sqrt(Math.max(0, 1 - Math.pow((620 - 720) / 322, 2)))), prime: false },
|
||
{ lon: Math.atan2((820 - 720) / 322, Math.sqrt(Math.max(0, 1 - Math.pow((820 - 720) / 322, 2)))), prime: false },
|
||
];
|
||
|
||
/** hub-logo-fragment-globe-grid-overlay.svg — E–W 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 — N–S 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;
|
||
out.push(
|
||
hubPixelToBody(ellipse.cx + ellipse.rx * Math.cos(a), ellipse.cy + ellipse.ry * Math.sin(a))
|
||
);
|
||
}
|
||
return out;
|
||
}
|
||
|
||
function parallelStyle(bright, scale, z, limbZ) {
|
||
const zCut = limbZ != null ? limbZ : FRONT_Z;
|
||
const t = Math.max(0, Math.min(1, (z - zCut) / (0.95 - zCut)));
|
||
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, limbZ) {
|
||
const zCut = limbZ != null ? limbZ : FRONT_Z;
|
||
const t = Math.max(0, Math.min(1, (z - zCut) / (0.95 - zCut)));
|
||
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, limbZ) {
|
||
let run = [];
|
||
const zCut = limbZ != null ? limbZ : FRONT_Z;
|
||
|
||
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++) {
|
||
if (!bodies[i]) {
|
||
flush();
|
||
continue;
|
||
}
|
||
const view = bodyToView(bodies[i], rotY);
|
||
if (view.z <= zCut) {
|
||
flush();
|
||
continue;
|
||
}
|
||
run.push({
|
||
sx: cx + view.x * r,
|
||
sy: cy - view.y * r,
|
||
z: view.z,
|
||
});
|
||
}
|
||
flush();
|
||
}
|
||
|
||
function parallelBodyRingAtLat(lat, steps) {
|
||
const out = [];
|
||
const cosLat = Math.cos(lat);
|
||
const sinLat = Math.sin(lat);
|
||
for (let i = 0; i <= steps; i++) {
|
||
const lon = -Math.PI + (2 * Math.PI * i) / steps;
|
||
out.push({
|
||
x: cosLat * Math.sin(lon),
|
||
y: sinLat,
|
||
z: cosLat * Math.cos(lon),
|
||
});
|
||
}
|
||
return out;
|
||
}
|
||
|
||
function meridianBodyRingAtLon(lon, steps) {
|
||
const out = [];
|
||
for (let i = 0; i <= steps; i++) {
|
||
const lat = -Math.PI / 2 + (Math.PI * i) / steps;
|
||
const cosLat = Math.cos(lat);
|
||
out.push({
|
||
x: cosLat * Math.sin(lon),
|
||
y: Math.sin(lat),
|
||
z: cosLat * Math.cos(lon),
|
||
});
|
||
}
|
||
return out;
|
||
}
|
||
|
||
function parallelBandHalfWidth(par) {
|
||
const hubRy = par.bright ? HUB_EW_PARALLELS[0].ry : HUB_EW_PARALLELS[1].ry;
|
||
return hubRy / GLOBE_VIEW.r;
|
||
}
|
||
|
||
function parallelBandStyle(par, z, bandPx, layer) {
|
||
const t = Math.max(0, Math.min(1, (z - LIMB_Z) / (0.95 - LIMB_Z)));
|
||
if (t <= 0) {
|
||
return null;
|
||
}
|
||
const rgb = par.bright ? '219,231,246' : '231,236,243';
|
||
if (layer === 'halo') {
|
||
return {
|
||
color: 'rgba(' + rgb + ',' + (0.1 + 0.2 * t).toFixed(3) + ')',
|
||
width: bandPx * 1.08,
|
||
};
|
||
}
|
||
return {
|
||
color: 'rgba(' + rgb + ',' + (par.bright ? 0.4 + 0.52 * t : 0.24 + 0.4 * t).toFixed(3) + ')',
|
||
width: bandPx * (0.58 + 0.42 * t),
|
||
};
|
||
}
|
||
|
||
/** One filled ribbon per visible arc — no per-longitude quads (avoids comb artifacts). */
|
||
function fillParallelBandPath(ctx, cx, cy, r, rotY, par) {
|
||
const lat = par.lat;
|
||
const halfW = parallelBandHalfWidth(par);
|
||
const latLo = Math.max(-Math.PI / 2 + 0.02, lat - halfW);
|
||
const latHi = Math.min(Math.PI / 2 - 0.02, lat + halfW);
|
||
const outer = parallelBodyRingAtLat(latHi, SPHERE_AXIS_STEPS);
|
||
const inner = parallelBodyRingAtLat(latLo, SPHERE_AXIS_STEPS);
|
||
const n = Math.min(outer.length, inner.length);
|
||
const rgb = par.bright ? '219,231,246' : '231,236,243';
|
||
let runO = [];
|
||
let runI = [];
|
||
|
||
function flushFill() {
|
||
if (runO.length < 2) {
|
||
runO = [];
|
||
runI = [];
|
||
return;
|
||
}
|
||
let zSum = 0;
|
||
for (let k = 0; k < runO.length; k++) {
|
||
zSum += runO[k].z;
|
||
}
|
||
const zAvg = zSum / runO.length;
|
||
const t = Math.max(0, Math.min(1, (zAvg - LIMB_Z) / (0.95 - LIMB_Z)));
|
||
if (t <= 0) {
|
||
runO = [];
|
||
runI = [];
|
||
return;
|
||
}
|
||
const alpha = (par.bright ? 0.18 + 0.52 * t : 0.1 + 0.36 * t).toFixed(3);
|
||
ctx.beginPath();
|
||
ctx.moveTo(runO[0].sx, runO[0].sy);
|
||
for (let k = 1; k < runO.length; k++) {
|
||
ctx.lineTo(runO[k].sx, runO[k].sy);
|
||
}
|
||
for (let k = runI.length - 1; k >= 0; k--) {
|
||
ctx.lineTo(runI[k].sx, runI[k].sy);
|
||
}
|
||
ctx.closePath();
|
||
ctx.fillStyle = 'rgba(' + rgb + ',' + alpha + ')';
|
||
ctx.fill();
|
||
runO = [];
|
||
runI = [];
|
||
}
|
||
|
||
for (let i = 0; i < n; i++) {
|
||
const vo = bodyToView(outer[i], rotY);
|
||
const vi = bodyToView(inner[i], rotY);
|
||
if (vo.z <= LIMB_Z || vi.z <= LIMB_Z) {
|
||
flushFill();
|
||
continue;
|
||
}
|
||
runO.push({ sx: cx + vo.x * r, sy: cy - vo.y * r, z: vo.z });
|
||
runI.push({ sx: cx + vi.x * r, sy: cy - vi.y * r, z: vi.z });
|
||
}
|
||
flushFill();
|
||
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
parallelBodyRingAtLat(lat, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
const style = parallelStyle(par.bright, 1, z, LIMB_Z);
|
||
if (!style) {
|
||
return null;
|
||
}
|
||
return {
|
||
color: style.color,
|
||
width: Math.max(style.width, (par.bright ? 1.8 : 1.4)),
|
||
};
|
||
},
|
||
LIMB_Z
|
||
);
|
||
}
|
||
|
||
/** Wide dual stroke on centerline — globe3d=7. */
|
||
function strokeParallelBandWide(ctx, cx, cy, r, rotY, par, layoutScale) {
|
||
const halfW = parallelBandHalfWidth(par);
|
||
const bandPx = Math.max(par.bright ? 6 : 10, 2 * halfW * r);
|
||
const ring = parallelBodyRingAtLat(par.lat, SPHERE_AXIS_STEPS);
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
ring,
|
||
function (z) {
|
||
return parallelBandStyle(par, z, bandPx, 'halo');
|
||
},
|
||
LIMB_Z
|
||
);
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
ring,
|
||
function (z) {
|
||
return parallelBandStyle(par, z, bandPx, 'core');
|
||
},
|
||
LIMB_Z
|
||
);
|
||
}
|
||
|
||
/** globe3d=6 — v4 sphere model with volumetric E–W bands. */
|
||
function drawSphereGridBanded(ctx, cx, cy, r, rotY, layoutScale, opts) {
|
||
const parallelsOnly = !!(opts && opts.parallelsOnly);
|
||
ctx.save();
|
||
ctx.beginPath();
|
||
ctx.arc(cx, cy, r, 0, Math.PI * 2);
|
||
ctx.clip();
|
||
|
||
SPHERE_PARALLELS.forEach(function (par) {
|
||
fillParallelBandPath(ctx, cx, cy, r, rotY, par);
|
||
});
|
||
|
||
if (!parallelsOnly) {
|
||
SPHERE_MERIDIANS.forEach(function (mer) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
meridianBodyRingAtLon(mer.lon, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return meridianStyle(mer.prime, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
}
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
/** Hub ellipse centerline on sphere, wide stroke — stays elliptical under Y rotation (globe3d=8). */
|
||
function strokeHubEllipseParallel(ctx, cx, cy, r, rotY, ellipse, layoutScale) {
|
||
const scale = r / GLOBE_VIEW.r;
|
||
const bandPx = Math.max(ellipse.bright ? 5 : 8, 2 * ellipse.ry * scale);
|
||
const par = { bright: ellipse.bright };
|
||
const ring = ellipseBodyRing(ellipse, AXIS_STEPS);
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
ring,
|
||
function (z) {
|
||
return parallelBandStyle(par, z, bandPx, 'halo');
|
||
},
|
||
LIMB_Z
|
||
);
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
ring,
|
||
function (z) {
|
||
return parallelBandStyle(par, z, bandPx, 'core');
|
||
},
|
||
LIMB_Z
|
||
);
|
||
}
|
||
|
||
/** globe3d=8 — hub E–W ellipses on sphere; v4 N–S meridians. */
|
||
function drawHubEllipseGridRotated(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) {
|
||
strokeHubEllipseParallel(ctx, cx, cy, r, rotY, ellipse, layoutScale);
|
||
});
|
||
|
||
SPHERE_MERIDIANS.forEach(function (mer) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
meridianBodyRingAtLon(mer.lon, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return meridianStyle(mer.prime, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
function hubRyForParallel(par) {
|
||
if (par.bright) {
|
||
return HUB_EW_PARALLELS[0].ry;
|
||
}
|
||
return par.lat > 0 ? HUB_EW_PARALLELS[1].ry : HUB_EW_PARALLELS[2].ry;
|
||
}
|
||
|
||
/** v4 visible arc bounds → 2D ellipse (curved ends via disk clip). */
|
||
function drawParallelScreenEllipse(ctx, cx, cy, r, rotY, par) {
|
||
let xMin = Infinity;
|
||
let xMax = -Infinity;
|
||
let zSum = 0;
|
||
let n = 0;
|
||
const ring = parallelBodyRingAtLat(par.lat, SPHERE_AXIS_STEPS);
|
||
for (let i = 0; i < ring.length; i++) {
|
||
const view = bodyToView(ring[i], rotY);
|
||
if (view.z <= LIMB_Z) {
|
||
continue;
|
||
}
|
||
xMin = Math.min(xMin, view.x);
|
||
xMax = Math.max(xMax, view.x);
|
||
zSum += view.z;
|
||
n++;
|
||
}
|
||
if (n < 2 || xMax <= xMin) {
|
||
return;
|
||
}
|
||
|
||
const t = Math.max(0, Math.min(1, (zSum / n - LIMB_Z) / (0.95 - LIMB_Z)));
|
||
const rx = ((xMax - xMin) / 2) * r;
|
||
const ry = hubRyForParallel(par) * (r / GLOBE_VIEW.r);
|
||
if (rx < 0.5 || ry < 0.5) {
|
||
return;
|
||
}
|
||
const ecx = cx + ((xMin + xMax) / 2) * r;
|
||
const ecy = cy - Math.sin(par.lat) * r;
|
||
const rgb = par.bright ? '219,231,246' : '231,236,243';
|
||
const alpha = par.bright ? 0.55 + 0.45 * t : 0.35 + 0.5 * t;
|
||
const layoutScale = r / GLOBE_VIEW.r;
|
||
const lineW = Math.max(par.bright ? 2.5 : 2, layoutScale * 0.0075) * (0.55 + 0.45 * t);
|
||
|
||
ctx.save();
|
||
ctx.beginPath();
|
||
ctx.arc(cx, cy, r, 0, Math.PI * 2);
|
||
ctx.clip();
|
||
ctx.beginPath();
|
||
ctx.ellipse(ecx, ecy, rx, ry, 0, 0, Math.PI * 2);
|
||
ctx.strokeStyle = 'rgba(' + rgb + ',' + alpha.toFixed(3) + ')';
|
||
ctx.lineWidth = lineW;
|
||
ctx.lineCap = 'round';
|
||
ctx.lineJoin = 'round';
|
||
ctx.stroke();
|
||
ctx.restore();
|
||
}
|
||
|
||
/** @deprecated screen-Y strips — flat rectangles; use drawParallelScreenEllipse. */
|
||
function fillParallelScreenStrip(ctx, cx, cy, r, rotY, par) {
|
||
const halfPx = (par.bright ? HUB_EW_PARALLELS[0].ry : HUB_EW_PARALLELS[1].ry) * (r / GLOBE_VIEW.r);
|
||
const ring = parallelBodyRingAtLat(par.lat, SPHERE_AXIS_STEPS);
|
||
const rgb = par.bright ? '219,231,246' : '231,236,243';
|
||
let run = [];
|
||
|
||
function flushFill() {
|
||
if (run.length < 2) {
|
||
run = [];
|
||
return;
|
||
}
|
||
let zSum = 0;
|
||
for (let k = 0; k < run.length; k++) {
|
||
zSum += run[k].z;
|
||
}
|
||
const zAvg = zSum / run.length;
|
||
const t = Math.max(0, Math.min(1, (zAvg - LIMB_Z) / (0.95 - LIMB_Z)));
|
||
if (t <= 0) {
|
||
run = [];
|
||
return;
|
||
}
|
||
const alpha = (par.bright ? 0.16 + 0.48 * t : 0.09 + 0.34 * t).toFixed(3);
|
||
ctx.beginPath();
|
||
for (let k = 0; k < run.length; k++) {
|
||
ctx.lineTo(run[k].sx, run[k].sy - halfPx);
|
||
}
|
||
for (let k = run.length - 1; k >= 0; k--) {
|
||
ctx.lineTo(run[k].sx, run[k].sy + halfPx);
|
||
}
|
||
ctx.closePath();
|
||
ctx.fillStyle = 'rgba(' + rgb + ',' + alpha + ')';
|
||
ctx.fill();
|
||
run = [];
|
||
}
|
||
|
||
for (let i = 0; i < ring.length; i++) {
|
||
const view = bodyToView(ring[i], rotY);
|
||
if (view.z <= LIMB_Z) {
|
||
flushFill();
|
||
continue;
|
||
}
|
||
run.push({
|
||
sx: cx + view.x * r,
|
||
sy: cy - view.y * r,
|
||
z: view.z,
|
||
});
|
||
}
|
||
flushFill();
|
||
}
|
||
|
||
/** globe3d=10 — v4 E–W screen strips + v4 meridians. */
|
||
function drawSphereGridScreenStrip(ctx, cx, cy, r, rotY, layoutScale) {
|
||
ctx.save();
|
||
ctx.beginPath();
|
||
ctx.arc(cx, cy, r, 0, Math.PI * 2);
|
||
ctx.clip();
|
||
|
||
SPHERE_PARALLELS.forEach(function (par) {
|
||
drawParallelScreenEllipse(ctx, cx, cy, r, rotY, par);
|
||
});
|
||
|
||
SPHERE_MERIDIANS.forEach(function (mer) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
meridianBodyRingAtLon(mer.lon, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return meridianStyle(mer.prime, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
/** globe3d=7 — v4 sphere model, wide stroke bands (no path fill). */
|
||
function drawSphereGridWideStroke(ctx, cx, cy, r, rotY, layoutScale, opts) {
|
||
const parallelsOnly = !!(opts && opts.parallelsOnly);
|
||
ctx.save();
|
||
ctx.beginPath();
|
||
ctx.arc(cx, cy, r, 0, Math.PI * 2);
|
||
ctx.clip();
|
||
|
||
SPHERE_PARALLELS.forEach(function (par) {
|
||
strokeParallelBandWide(ctx, cx, cy, r, rotY, par, layoutScale);
|
||
});
|
||
|
||
if (!parallelsOnly) {
|
||
SPHERE_MERIDIANS.forEach(function (mer) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
meridianBodyRingAtLon(mer.lon, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return meridianStyle(mer.prime, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
}
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
/** Full-sphere grid rings (globe3d>=4). */
|
||
function drawSphereGrid(ctx, cx, cy, r, rotY, layoutScale, opts) {
|
||
const parallelsOnly = !!(opts && opts.parallelsOnly);
|
||
ctx.save();
|
||
ctx.beginPath();
|
||
ctx.arc(cx, cy, r, 0, Math.PI * 2);
|
||
ctx.clip();
|
||
|
||
SPHERE_PARALLELS.forEach(function (par) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
parallelBodyRingAtLat(par.lat, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return parallelStyle(par.bright, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
|
||
if (!parallelsOnly) {
|
||
SPHERE_MERIDIANS.forEach(function (mer) {
|
||
strokeBodyRing(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
rotY,
|
||
meridianBodyRingAtLon(mer.lon, SPHERE_AXIS_STEPS),
|
||
function (z) {
|
||
return meridianStyle(mer.prime, layoutScale, z, LIMB_Z);
|
||
},
|
||
LIMB_Z
|
||
);
|
||
});
|
||
}
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
/** Hub SVG ellipses traced on sphere (globe3d=5) — matches static art at yaw 0. */
|
||
function drawHubParallelGrid(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, LIMB_Z);
|
||
}, LIMB_Z);
|
||
});
|
||
|
||
ctx.restore();
|
||
}
|
||
|
||
/** Hub SVG grid: E–W ellipses + N–S meridian paths (globe3d=1). */
|
||
function drawHubGrid(ctx, cx, cy, r, rotY, layoutScale, opts) {
|
||
const parallelsOnly = !!(opts && opts.parallelsOnly);
|
||
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);
|
||
});
|
||
});
|
||
|
||
if (!parallelsOnly) {
|
||
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 drawGlobeGrid(ctx, cx, cy, r, rotY, layoutScale, renderVersion) {
|
||
if (renderVersion === 3) {
|
||
drawSphereGrid(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: true });
|
||
return;
|
||
}
|
||
if (renderVersion === 4) {
|
||
drawSphereGrid(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
return;
|
||
}
|
||
if (renderVersion === 5) {
|
||
drawHubParallelGrid(ctx, cx, cy, r, rotY, layoutScale);
|
||
return;
|
||
}
|
||
if (renderVersion === 6) {
|
||
drawSphereGridBanded(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
return;
|
||
}
|
||
if (renderVersion === 7) {
|
||
drawSphereGridWideStroke(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
return;
|
||
}
|
||
if (renderVersion === 8) {
|
||
drawHubEllipseGridRotated(ctx, cx, cy, r, rotY, layoutScale);
|
||
return;
|
||
}
|
||
if (renderVersion === 9) {
|
||
drawSphereGrid(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
return;
|
||
}
|
||
if (renderVersion === 10) {
|
||
drawSphereGridScreenStrip(ctx, cx, cy, r, rotY, layoutScale);
|
||
return;
|
||
}
|
||
if (renderVersion >= 2) {
|
||
drawSphereGrid(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
return;
|
||
}
|
||
drawHubGrid(ctx, cx, cy, r, rotY, layoutScale, { parallelsOnly: false });
|
||
}
|
||
|
||
function drawOceanRim(ctx, globeImg, cx, cy, r, rim, layoutScale, renderVersion) {
|
||
if (renderVersion >= 3) {
|
||
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();
|
||
const g = ctx.createRadialGradient(cx, cy, r, cx, cy, rim);
|
||
g.addColorStop(0, 'rgba(28,48,74,0.98)');
|
||
g.addColorStop(1, 'rgba(14,24,38,0.92)');
|
||
ctx.fillStyle = g;
|
||
ctx.fill();
|
||
ctx.restore();
|
||
return;
|
||
}
|
||
drawRim(ctx, globeImg, cx, cy, r, rim, layoutScale);
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
const OCEAN_SOLID = [OCEAN_FALLBACK.r, OCEAN_FALLBACK.g, OCEAN_FALLBACK.b, 255];
|
||
|
||
function sampleOceanSolid() {
|
||
return OCEAN_SOLID;
|
||
}
|
||
|
||
function sampleOceanClean(globe, tex) {
|
||
if (tex.z <= FRONT_Z) {
|
||
return OCEAN_SOLID;
|
||
}
|
||
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_SOLID;
|
||
}
|
||
|
||
function sampleLandRgbaLegacy(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;
|
||
}
|
||
|
||
/** globe3d>=2: mercator-flat on entire visible hemisphere (z>0). */
|
||
function sampleLandRgbaMercator(mercFlat, tex) {
|
||
if (tex.z <= LIMB_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 renderVersion = Math.max(1, parseInt(opts.renderVersion, 10) || 1);
|
||
|
||
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) {
|
||
if (renderVersion >= 3) {
|
||
return sampleOceanSolid();
|
||
}
|
||
return sampleOceanClean(globe, tex);
|
||
})
|
||
);
|
||
if (renderVersion === 1) {
|
||
blitLayer(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
fillDiskRegion(ctx, cx, cy, r, rotation, function (tex) {
|
||
const l = sampleLandRgbaLegacy(continents, mercFlat, tex);
|
||
return l || [0, 0, 0, 0];
|
||
})
|
||
);
|
||
} else if (renderVersion === 2) {
|
||
blitLayer(
|
||
ctx,
|
||
cx,
|
||
cy,
|
||
r,
|
||
fillDiskRegion(ctx, cx, cy, r, rotation, function (tex) {
|
||
const l = sampleLandRgbaMercator(mercFlat, tex);
|
||
return l || [0, 0, 0, 0];
|
||
})
|
||
);
|
||
}
|
||
drawGlobeGrid(ctx, cx, cy, r, rotation, layoutScale, renderVersion);
|
||
drawOceanRim(ctx, globeImg, cx, cy, r, rim, layoutScale, renderVersion);
|
||
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 = String(renderVersion);
|
||
stage.dataset.globeAxis =
|
||
renderVersion === 10
|
||
? 'ew-sphere-ellipse'
|
||
: renderVersion === 9
|
||
? 'ew-ns-sphere-v4'
|
||
: renderVersion >= 8
|
||
? 'ew-hub-ellipse-rot'
|
||
: renderVersion >= 7
|
||
? 'ew-sphere-stroke'
|
||
: renderVersion >= 6
|
||
? 'ew-sphere-band'
|
||
: renderVersion >= 5
|
||
? 'ew-hub-ellipse'
|
||
: renderVersion >= 3
|
||
? 'ew-sphere'
|
||
: renderVersion >= 2
|
||
? 'ew-ns-sphere'
|
||
: 'ew-ns-grid';
|
||
|
||
return {
|
||
destroy() {
|
||
cancelAnimationFrame(raf);
|
||
window.removeEventListener('resize', resize);
|
||
canvas.remove();
|
||
delete stage.dataset.globe3d;
|
||
delete stage.dataset.globeAxis;
|
||
},
|
||
};
|
||
}
|