@babylonjs/viewer/dist/chunks/gltf-feature-extras-DWMyMqbH.esm.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

const feature = {
  id: "ExtrasAsMetadata",
  async applyMaterial(mat) {
    const extras = mat._rawMatDef?.extras;
    return hasExtras(extras) ? { metadata: { gltf: { extras } } } : null;
  },
  async applyMesh(meshData, mesh, ctx) {
    const json = ctx._json;
    const node = json.nodes?.[meshData._nodeIndex];
    const gltfMesh = json.meshes?.[node?.mesh];
    assignFirstExtras(mesh, meshData._primitive?.extras, gltfMesh?.extras, node?.extras);
  },
  async applyAsset(_meshes, root, ctx) {
    const json = ctx._json;
    assignExtras(root, json.asset?.extras);
    const nodeMap = ctx._nodeMap;
    if (nodeMap) {
      for (let nodeIndex = 0; nodeIndex < nodeMap.length; nodeIndex++) {
        const node = nodeMap[nodeIndex];
        if (node) {
          assignExtras(node, json.nodes?.[nodeIndex]?.extras);
        }
      }
    }
    return {};
  }
};
function assignFirstExtras(target, ...extrasList) {
  for (const extras of extrasList) {
    if (hasExtras(extras)) {
      assignExtras(target, extras);
      return;
    }
  }
}
function assignExtras(target, extras) {
  if (!hasExtras(extras)) {
    return;
  }
  ensureGltfMetadata(target).extras = extras;
}
function ensureGltfMetadata(target) {
  const metadata = target.metadata ??= {};
  return metadata.gltf ??= {};
}
function hasExtras(extras) {
  return extras !== void 0;
}

export { feature as default };
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