prophetk-3d-viewer/src/core/modelTraversal.js

A Three.js r128 based GLB/GLTF model viewer for WeChat Mini Program and Web.

// Keep ownership separate from glTF extras copied into userData.
const modelRoots = new WeakSet();

// Visit one model's resources without entering separately registered models.
function traverseModel(root, visit) {
  function walk(node) {
    if (node !== root && modelRoots.has(node)) return;
    visit(node);
    node.children.forEach(walk);
  }
  walk(root);
}

module.exports = traverseModel;
module.exports.registerRoot = function (root) { modelRoots.add(root); };