Function toggleDiagHighlight

js/main.js:3086–3138

(kind)

  // Dispose old preview material so it gets fully recreated
  if (previewMaterial) {
    previewMaterial.dispose();
    previewMaterial = null;
  }

  loadGeometry(currentGeometry);

  // Reset displacement preview (an in-flight build used the old pose)
  cancelDisplacementPreviewBuild();
  if (dispPreviewGeometry) { dispPreviewGeometry.dispose(); dispPreviewGeometry = null; }
  settings.useDisplacement = false;
  dispPreviewToggle.checked = false;

  // Deactivate tools but keep the paint (face indices are stable after rotation)
  exclusionTool     = null;
  eraseMode         = false;
  isPainting        = false;
  exclBrushBtn.classList.remove('active');
  exclBucketBtn.classList.remove('active');
  exclBrushTypeRow.classList.add('hidden');
  exclRadiusRow.classList.add('hidden');
  exclHardnessRow.classList.add('hidden');
  exclThresholdRow.classList.add('hidden');
  canvas.style.cursor = '';
  setHoverPreview(null);
  _lastHoverTriIdx = -1;

  // Rebuild adjacency and carry the paint onto the moved vertices
  const adjData = buildAdjacency(currentGeometry);
  triangleAdjacency = adjData.adjacency;
  triangleCentroids = adjData.centroids;
  triangleFaceNormals = adjData.faceNormals;
  _rebuildPaintTreeKeepingPaint(adjData);

  // Update edge length for new bounds
  const diag = Math.sqrt(currentBounds.size.x ** 2 + currentBounds.size.y ** 2 + currentBounds.size.z ** 2);
  const defaultEdge = Math.max(0.05, Math.min(5.0, +(diag / 300).toFixed(2)));
  settings.refineLength = defaultEdge;
  refineLenSlider.value = defaultEdge;
  refineLenVal.value = defaultEdge;
  checkResolutionWarning();

  // Update mesh info
  const triCount = getTriangleCount(currentGeometry);
  const mb = ((currentGeometry.attributes.position.array.byteLength) / 1024 / 1024).toFixed(2);
  const sx = currentBounds.size.x.toFixed(2);
  const sy = currentBounds.size.y.toFixed(2);
  const sz = currentBounds.size.z.toFixed(2);
  _setMeshInfo(triCount, mb, sx, sy, sz);

  exportBtn.disabled = !_hasTexturedLayer();
  export3mfBtn.disabled = !_hasTexturedLayer();
  bakeBtn.disabled = !_hasTexturedLayer();
  updateSmartResBtnState();
  updatePreview();

  // Rebuild the paint display with the new vertex positions (face indices unchanged)