for (var i = 0; i < RAYS; i++) { var a = i / RAYS * Math.PI * 2, dx = Math.sin(a), dz = -Math.cos(a); var stop = stopAt(ox, oz, dx, dz, py); var vis = visibleAt(ox, py + 1.6, oz, dx, dz); if (stop != null && (!nearest || stop < nearest.d)) nearest = { d: stop, b: bearing(dx, dz) }; if (stop != null && vis != null) { visCount++; var gap = vis - stop; if (Math.abs(gap) > GAP_TOL) { gaps++; if (!worst || Math.abs(gap) > Math.abs(worst.gap)) worst = { gap: gap, b: bearing(dx, dz), vis: vis, stop: stop }; } } } var stand = A.groundAt ? A.groundAt(ox, oz) : null; var fx = fixes(ox, oz, 400); var line = 'SURVEY — (' + fmt(ox, 0) + ', ' + fmt(py, 1) + ', ' + fmt(oz, 0) + ') · ground ' + fmt(stand) + ' · nearest stop ' + (nearest ? fmt(nearest.d) + ' m ' + compass(nearest.b) : 'none within ' + FAR + ' m') + ' · picture vs account: ' + visCount + ' rays compared · ' + gaps + ' gaps > ' + GAP_TOL + ' m' + (worst ? ' · worst ' + fmt(worst.gap, 2) + ' m at ' + compass(worst.b) + ' (seen ' + fmt(worst.vis) + ' / stops ' + fmt(worst.stop) + ')' : ''); var fxLine = 'FIXES — ' + 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 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;backgroun