初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/Cesium3DTilesContent/I3dmToGltfConverter.h

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+#pragma once
+
+#include <Cesium3DTilesContent/GltfConverterResult.h>
+#include <CesiumAsync/Future.h>
+#include <CesiumGltf/Model.h>
+#include <CesiumGltfReader/GltfReader.h>
+
+#include <optional>
+#include <span>
+
+namespace Cesium3DTilesContent {
+struct AssetFetcher;
+
+/**
+ * @brief Converts an i3dm (Instanced 3D Model) file to a glTF model.
+ *
+ * For more information on the i3dm format, see
+ * https://github.com/CesiumGS/3d-tiles/blob/main/specification/TileFormats/Instanced3DModel/README.adoc
+ */
+struct I3dmToGltfConverter {
+  /**
+   * @brief Converts an i3dm binary file to a glTF model.
+   *
+   * @param instancesBinary The bytes loaded for the i3dm model.
+   * @param options Options for how the glTF should be loaded.
+   * @param assetFetcher The \ref AssetFetcher containing information used by
+   * loaded assets.
+   * @returns A future that resolves to a \ref GltfConverterResult.
+   */
+  static CesiumAsync::Future<GltfConverterResult> convert(
+      const std::span<const std::byte>& instancesBinary,
+      const CesiumGltfReader::GltfReaderOptions& options,
+      const AssetFetcher& assetFetcher);
+};
+} // namespace Cesium3DTilesContent