Function populateLanguageSelector

js/main.js:907–957

()

  settings.cylinderRadius = Math.max(0.1, getEffectiveCylinderRadius() * factor);
  _scheduleCylinderPanelRedraw();
  _scheduleCylinderPreviewUpdate();
  // Wheel is a discrete gesture — persist the new value without waiting for
  // a drag-end equivalent.
  if (typeof _autoSaveSettings === 'function') _autoSaveSettings();
}

function _cylinderPointerLeave() {
  if (_cylHoverMode) {
    _cylHoverMode = null;
    _cylinderUpdateCursor();
    _scheduleCylinderPanelRedraw();
  }
}

function _cylinderPointerUp(e) {
  if (!_cylDragMode) return;
  const wasPan = _cylDragMode === 'pan';
  _cylDragMode = null;
  try { cylinderCanvas.releasePointerCapture(e.pointerId); } catch { /* ignore */ }
  _cylinderUpdateCursor();
  _scheduleCylinderPanelRedraw();
  if (wasPan) return; // pan doesn't change projection state
  if (_cylPreviewThrottle) { clearTimeout(_cylPreviewThrottle); _cylPreviewThrottle = null; }
  updatePreview();
  requestRender();
  // Persist the new center/radius — cylinderCanvas is outside #settings-panel,
  // so the panel's input/change listener won't autosave for us.
  if (typeof _autoSaveSettings === 'function') _autoSaveSettings();
}

cylinderCanvas.addEventListener('pointerdown',   _cylinderPointerDown);
cylinderCanvas.addEventListener('pointermove',   _cylinderPointerMove);
cylinderCanvas.addEventListener('pointerup',     _cylinderPointerUp);
cylinderCanvas.addEventListener('pointercancel', _cylinderPointerUp);
cylinderCanvas.addEventListener('pointerleave',  _cylinderPointerLeave);
cylinderCanvas.addEventListener('wheel', _cylinderWheel, { passive: false });
// Right-click is reserved for panning, so swallow the browser context menu
// before it interrupts the drag.
cylinderCanvas.addEventListener('contextmenu', (e) => e.preventDefault());

function updateCylinderUIVisibility() {
  const isCyl = settings.mappingMode === 3 /* MODE_CYLINDRICAL */;
  // The seamless-wrap snap applies to both wrap-around modes (cylindrical
  // and spherical); the rest of this panel is cylinder-only.
  cylinderSnapRow.style.display = _isSeamlessWrapMode() ? '' : 'none';
  cylinderAxisRow.style.display = isCyl ? '' : 'none';
  // Show the panel whenever the user is in cylindrical mode, even without a
  // model loaded — they get the empty placeholder until they load one, which
  // makes it clear that the gizmo will appear there.
  cylinderPanel.classList.toggle('hidden', !isCyl);
  if (isCyl) {
    if (currentGeometry) _buildCylinderSilhouette();
    _scheduleCylinderPanelRedraw();
  }