Method loadImage

source/base/StarAssets.cpp:1227–1313

}

shared_ptr<Assets::AssetData> Assets::loadImage(AssetPath const& path) const {
  validatePath(path, true, true);
  if (!path.directives.empty()) {
    shared_ptr<ImageData> source =
        as<ImageData>(loadAsset(AssetId{AssetType::Image, {path.basePath, path.subPath, {}}}));
    if (!source)
      return {};
    StringMap<ImageConstPtr> references;
    StringList referencePaths;

    for (auto& directives : path.directives.list())
      directives.loadOperations();

    path.directives.forEach([&](auto const& entry, Directives const&) {
      addImageOperationReferences(entry.operation, referencePaths);
    }); // TODO: This can definitely be better, was changed quickly to support the new Directives.


    for (auto const& ref : referencePaths) {
      auto components = AssetPath::split(ref);
      validatePath(components, true, false);
      auto refImage = as<ImageData>(loadAsset(AssetId{AssetType::Image, std::move(components)}));
      if (!refImage)
        return {};
      references[ref] = refImage->image;
    }

    return unlockDuring([&]() {
      auto newData = make_shared<ImageData>();
      Image newImage = *source->image;
      path.directives.forEach([&](Directives::Entry const& entry, Directives const&) {
        if (auto error = entry.operation.ptr<ErrorImageOperation>())
          if (auto string = error->cause.ptr<std::string>())
            throw DirectivesException::format("ImageOperation parse error: {}", *string);
          else
            std::rethrow_exception(error->cause.get<std::exception_ptr>());
        else
          processImageOperation(entry.operation, newImage, [&](String const& ref) { return references.get(ref).get(); });
      });
      newData->image = make_shared<Image>(std::move(newImage));
      return newData;
    });

  } else if (path.subPath) {
    auto imageData = as<ImageData>(loadAsset(AssetId{AssetType::Image, {path.basePath, {}, {}}}));
    if (!imageData)
      return {};

    // Base image must have frames data associated with it.
    if (!imageData->frames)
      throw AssetException::format("No associated frames file found for image '{}' while resolving image frame '{}'", path.basePath, path);

    if (auto alias = imageData->frames->aliases.ptr(*path.subPath)) {
      imageData = as<ImageData>(loadAsset(AssetId{AssetType::Image, {path.basePath, *alias, path.directives}}));
      if (!imageData)
        return {};

      auto newData = make_shared<ImageData>();