Function checkPrecisionOutdated

js/main.js:4236–4248

Show/hide the "outdated" badge when brush size changes while precision is active.

()

  const nrm   = geometry.attributes.normal.array;

  // Vertex-dedup pass: assign a numeric ID to each unique quantised position.
  const QUANT = 1e4;
  const dedupMap = new QuantizedPointMap(QUANT, Math.min(count, 1 << 22));
  let nextId = 0;
  const vertId = new Uint32Array(count);
  for (let i = 0; i < count; i++) {
    const id = dedupMap.getOrSet(pos[i*3], pos[i*3+1], pos[i*3+2], nextId);
    if (dedupMap.inserted) nextId++;
    vertId[i] = id;
  }

  // Accumulate area-weighted buffer normals per unique position into flat arrays.
  // The subdivision pipeline splits indexed vertices at sharp dihedral edges
  // (>30 deg) so the interpolated buffer normals are smooth across soft edges
  // (cylinder, sphere) but sharp across hard edges (cube).  Using these buffer
  // normals instead of geometric face normals eliminates visible faceting steps