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feat(globe3d=11): pp/pe pole and limb lens pinch URL params

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Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Anton Afanasyeu
2026-08-05 21:20:37 +02:00
parent 0f09f235a7
commit 0c447728d4
2 changed files with 19 additions and 9 deletions
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26
assets/hub-globe.js
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@@ -12,7 +12,7 @@
* 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.
* globe3d=11: v10 grid + geographic mercator-flat land (360° U-wrap).
* ?latf=1.25&lngf=1&zy=0&zx=0 — land plate zoom (linear + non-linear).
* ?latf=1.25&lngf=1&zy=1&zx=1&pp=0&pe=0 — land plate zoom + pole/limb lens pinch.
*/
export const GLOBE_VIEW = { imgW: 1920, imgH: 1080, cx: 720, cy: 560, r: 322, rim: 330 };
@@ -31,7 +31,7 @@ const CONTINENT_INNER_SY = 1.2408477842003853;
/** Map plate center longitude (extract_red_polygons.py CENTER_LON). */
const MERCATOR_LON_CENTER = (12 * Math.PI) / 180;
/** Default land-plate zoom (?latf / ?lngf / ?zy / ?zx on globe3d=11). */
const LAND_ZOOM_DEFAULT = { latf: 1.25, lngf: 1, zy: 1, zx: 1 };
const LAND_ZOOM_DEFAULT = { latf: 1.25, lngf: 1, zy: 1, zx: 1, pp: 0, pe: 0 };
function clampZoomNum(v, min, max, fallback) {
if (typeof v !== 'number' || !isFinite(v)) {
@@ -47,21 +47,27 @@ function resolveLandZoom(raw) {
lngf: clampZoomNum(r.lngf, 0.05, 4, LAND_ZOOM_DEFAULT.lngf),
zy: clampZoomNum(r.zy, 0.05, 4, LAND_ZOOM_DEFAULT.zy),
zx: clampZoomNum(r.zx, 0.05, 4, LAND_ZOOM_DEFAULT.zx),
pp: clampZoomNum(r.pp, 0, 0.95, LAND_ZOOM_DEFAULT.pp),
pe: clampZoomNum(r.pe, 0, 0.95, LAND_ZOOM_DEFAULT.pe),
};
}
/**
* Linear latf/lngf on sphere lon/lat; zy/zx bias zoom toward equator/ prime meridian:
* mul = factor × (1 + z×(1−t²)), t = |coord|/pole (1 at pole, 0 at center line).
* Land plate sample remap (globe3d=11 URL tunables):
* latf/lngf — linear zoom; zy/zx — equator/prime-meridian mag (1 = uniform).
* pp — pole lens pinch (0 = off): pulls N/S sample toward equator near poles.
* pe — limb lens pinch (0 = off): pulls E/W sample toward center near disk edges.
*/
function landZoomLonLat(lon, lat, zoom) {
const latT = Math.min(1, Math.abs(lat) / (Math.PI / 2));
const lonT = Math.min(1, Math.abs(lon) / Math.PI);
const latMul = zoom.latf * (1 + zoom.zy * (1 - latT * latT));
const lonMul = zoom.lngf * (1 + zoom.zx * (1 - lonT * lonT));
const latMul = zoom.latf * (zoom.zy * (1 - latT * latT) + latT * latT);
const lonMul = zoom.lngf * (zoom.zx * (1 - lonT * lonT) + lonT * lonT);
const poleLens = 1 - zoom.pp * latT * latT;
const edgeLens = 1 - zoom.pe * lonT * lonT;
return {
lon: wrapLon(lon * lonMul + MERCATOR_LON_CENTER),
lat: Math.max(-1.52, Math.min(1.52, lat * latMul)),
lon: wrapLon(lon * lonMul * edgeLens + MERCATOR_LON_CENTER),
lat: Math.max(-1.52, Math.min(1.52, lat * latMul * poleLens)),
};
}
const RASTER_SCALE = 2;
@@ -1403,6 +1409,8 @@ export async function mountHubGlobe(stage, opts) {
stage.dataset.globeLngf = String(landZoom.lngf);
stage.dataset.globeZy = String(landZoom.zy);
stage.dataset.globeZx = String(landZoom.zx);
stage.dataset.globePp = String(landZoom.pp);
stage.dataset.globePe = String(landZoom.pe);
}
stage.dataset.globeAxis =
renderVersion === 11
@@ -1436,6 +1444,8 @@ export async function mountHubGlobe(stage, opts) {
delete stage.dataset.globeLngf;
delete stage.dataset.globeZy;
delete stage.dataset.globeZx;
delete stage.dataset.globePp;
delete stage.dataset.globePe;
},
};
}