s(nearVis.b) + ' — a surface with no stop: you would walk through it)' : '') +
' · COLLISION ONLY ' + nColOnly + (nearCol ? ' (nearest ' + fmt(nearCol.d) + ' m ' + compass(nearCol.b) + ' — a stop with no surface: an invisible wall)' : '') +
' · open ' + nOpen;
var gaps = nMis + nVisOnly + nColOnly;
var fxLine = 'FIXES (nearest 8 of the registry) — ' + fx.map(function (f) { return f.name + ' ' + fmt(f.d, 0) + ' m ' + compass(f.b); }).join(' · ');
record(line); record(fxLine);
C.lastScan = line + '
' + fxLine;
render();
A.help('📷 Survey taken — ' + (nearest ? 'nearest stop ' + fmt(nearest.d) + ' m ' + compass(nearest.b) : 'open ground') + (gaps ? ' · ' + gaps + ' picture/account gaps found.' : ' · picture and account agree.'), 6);
}
function record(text) {
C.history.unshift(text); if (C.history.length > 5) C.history.pop();
A.logBuild({ t: Date.now(), site: 'SURVEY CAMERA', what: text });
try {
var r = JSON.parse(localStorage.getItem('solid-survey-records') || '[]');
r.push({ t: Date.now(), text: text }); localStorage.setItem('solid-survey-records', JSON.stringify(r.slice(-60)));
} catch (e) {}
}
/* the curb run: width between the stops, sampled while moving */
function curbLoop() {
if (!C.curb) return;
var now = performance.now();
if (now - C.curbLast >= 500) {
C.curbLast = now;
var vx = S.p.x - (C.lastPos ? C.lastPos.x : S.p.x), vz = S.p.z - (C.lastPos ? C.lastPos.z : S.p.z);
var moved = Math.sqrt(vx * vx + vz * vz);
if (moved > 0.4) {
C.curbDist += moved;
var il = 1 / Math.sqrt(vx * vx + vz * vz), px = -vz * il, pz = vx * il;
var dl = stopAt(S.p.x, S.p.z, px, pz, S.p.y), dr = stopAt(S.p.x, S.p.z, -px, -pz, S.p.y);
if (dl != null && dr != null && dl < 30 && dr < 30) C.widths.push(dl + dr);
}
C.lastPos = { x: S.p.x, z: S.p.z };
render();
}
requestAnimationFrame(curbLoop);
}
function toggleCurb() {
C.curb = !C.curb;
if (C.curb) { C.widths = []; C.curbDist = 0; C.curbLast = 0; C.lastPos = { x: S.p.x, z: S.p.z }; requestAnimationFrame(curbLoop); }
else if (C.widths.length) {
var mn = Math.min.apply(null, C.widths), sum = 0;
for (var i = 0; i < C.widths.length; i++) sum += C.widths[i];
record('INNER DIMENSION — curb run over ' + fmt(C.curbDist, 0) + ' m: width between detected stops min ' + fmt(mn) + ' m · mean ' + fmt(sum / C.widths.length) + ' m · ' + C.widths.length + ' samples.');
}
render();
}
function render() {
if (!C.body) return;
var curbLine = C.curb ? '● CURB RUN — ' + fmt(C.curbDist, 0) + ' m · ' + C.widths.length + ' widths' + (C.widths.length ? ' · last ' + fmt(C.widths[C.widths.length - 1]) + ' m' : '') + '
' : '';
C.body.innerHTML =
'SURVEY CAMERA
' +
'The King\'s instrument of sight: the visible surface, the collision stop, and the standing ground — three distances, and the gaps between them.
' +
(C.lastScan ? '' + C.lastScan + '
' : '') + curbLine +
' ' +
'
' +
(C.history.length ? '' + C.history.slice(0, 3).join('
') + '
' : '');
var b1 = document.getElementById('sc-scan'); if (b1) b1.addEventListener('click', scan);
var b2 = document.getElementById('sc-curb'); if (b2) b2.addEventListener('click', toggleCurb);
}
function build() {
var st = document.createElement('style');
st.textContent = '#sc-chip{position:fixed;left:10px;bottom:54px;z-index:9998;background:rgba(35,44,61,.92);color:#d8a833;border:1px solid #d8a833;border-radius:10px;padding:8px 11px;font:700 12px system-ui}#sc-panel{position:fixed;left:10px;bottom:96px;z-index:9998;width:262px;background:rgba(35,44,61,.95);color:#cfd6e4;border:1px solid #9aa4b5;border-radius:12px;padding:10px 12px;font:13px/1.45 system-ui;display:none}';
document.head.appendChild(st);
var chip = document.createElement('button');
chip.id = 'sc-chip'; chip.textContent = '📷 SURVEY';
chip.addEventListener('click', function () {
var open = C.panel.style.display !== 'block';
C.panel.style.display = open ? 'block' : 'none';
if (open) render();
});
document.body.appendChild(chip);
C.panel = document.createElement('div'); C.panel.id = 'sc-panel';
C.body = document.createElement('div'); C.panel.appendChild(C.body);
document.body.appendChild(C.panel);
}
fetch('/api/city/me', { credentials: 'same-origin' }).then(function (r) { return r.json(); }).then(fun