json NodeData::serialize()

in src/gltf/properties/NodeData.cpp [55:103]

• 41 lines of code
• 12 McCabe index (conditional complexity)

json NodeData::serialize() const {
  json result = {{"name", name}};

  // if any of the T/R/S have NaN components, just leave them out of the glTF
  auto maybeAdd = [&](std::string key, std::vector<float> vec) -> void {
    if (std::none_of(vec.begin(), vec.end(), [&](float n) { return std::isnan(n); })) {
      result[key] = vec;
    }
  };
  maybeAdd("translation", toStdVec(translation));
  maybeAdd("rotation", toStdVec(rotation));
  maybeAdd("scale", toStdVec(scale));

  if (!children.empty()) {
    result["children"] = children;
  }
  if (isJoint) {
    // sanity-check joint node
    assert(mesh < 0 && skin < 0);
  } else {
    // non-joint node
    if (mesh >= 0) {
      result["mesh"] = mesh;
    }
    if (!skeletons.empty()) {
      result["skeletons"] = skeletons;
    }
    if (skin >= 0) {
      result["skin"] = skin;
    }
    if (camera >= 0) {
      result["camera"] = camera;
    }
    if (light >= 0) {
      result["extensions"][KHR_LIGHTS_PUNCTUAL]["light"] = light;
    }
  }

  for (const auto& i : userProperties) {
    auto& prop_map = result["extras"]["fromFBX"]["userProperties"];

    json j = json::parse(i);
    for (const auto& k : json::iterator_wrapper(j)) {
      prop_map[k.key()] = k.value();
    }
  }

  return result;
}