Function getFrontFaceHit

js/main.js:1907–1915

(hits, mesh)

  document.addEventListener('mouseup', () => {
    if (!isPainting) return;
    isPainting = false;
    getControls().enabled = true;
    // Capture the completed stroke synchronously so quick consecutive strokes
    // each get their own undo entry — the debounced window-pointerup capture
    // would otherwise collapse strokes that finish within UNDO_DEBOUNCE_MS.
    _flushUndoCapture();
    _commitUndoCapture();
  });

  document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape') {