初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/CesiumRasterOverlays/IonRasterOverlay.h

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+#pragma once
+
+#include "Library.h"
+#include "RasterOverlay.h"
+
+#include <CesiumAsync/IAssetRequest.h>
+#include <CesiumGeospatial/Ellipsoid.h>
+
+#include <functional>
+#include <memory>
+
+namespace CesiumRasterOverlays {
+
+/**
+ * @brief A {@link RasterOverlay} that obtains imagery data from Cesium ion.
+ */
+class CESIUMRASTEROVERLAYS_API IonRasterOverlay final : public RasterOverlay {
+public:
+  /**
+   * @brief Creates a new instance.
+   *
+   * The tiles that are provided by this instance will contain
+   * imagery data that was obtained from the Cesium ion asset
+   * with the given ID, accessed with the given access token.
+   *
+   * @param name The user-given name of this overlay layer.
+   * @param ionAssetID The asset ID.
+   * @param ionAccessToken The access token.
+   * @param overlayOptions The {@link RasterOverlayOptions} for this instance.
+   * @param ionAssetEndpointUrl The URL of the ion endpoint to make our requests
+   * to.
+   */
+  IonRasterOverlay(
+      const std::string& name,
+      int64_t ionAssetID,
+      const std::string& ionAccessToken,
+      const RasterOverlayOptions& overlayOptions = {},
+      const std::string& ionAssetEndpointUrl = "https://api.cesium.com/");
+  virtual ~IonRasterOverlay() override;
+
+  virtual CesiumAsync::Future<CreateTileProviderResult> createTileProvider(
+      const CesiumAsync::AsyncSystem& asyncSystem,
+      const std::shared_ptr<CesiumAsync::IAssetAccessor>& pAssetAccessor,
+      const std::shared_ptr<CesiumUtility::CreditSystem>& pCreditSystem,
+      const std::shared_ptr<IPrepareRasterOverlayRendererResources>&
+          pPrepareRendererResources,
+      const std::shared_ptr<spdlog::logger>& pLogger,
+      CesiumUtility::IntrusivePointer<const RasterOverlay> pOwner)
+      const override;
+
+private:
+  int64_t _ionAssetID;
+  std::string _ionAccessToken;
+  std::string _ionAssetEndpointUrl;
+
+  struct AssetEndpointAttribution {
+    std::string html;
+    bool collapsible = true;
+  };
+
+  struct ExternalAssetEndpoint {
+    std::string externalType;
+    std::string url;
+    std::string mapStyle;
+    std::string key;
+    std::string culture;
+    std::string accessToken;
+    std::vector<AssetEndpointAttribution> attributions;
+  };
+
+  static std::unordered_map<std::string, ExternalAssetEndpoint> endpointCache;
+
+  CesiumAsync::Future<CreateTileProviderResult> createTileProvider(
+      const ExternalAssetEndpoint& endpoint,
+      const CesiumAsync::AsyncSystem& asyncSystem,
+      const std::shared_ptr<CesiumAsync::IAssetAccessor>& pAssetAccessor,
+      const std::shared_ptr<CesiumUtility::CreditSystem>& pCreditSystem,
+      const std::shared_ptr<IPrepareRasterOverlayRendererResources>&
+          pPrepareRendererResources,
+      const std::shared_ptr<spdlog::logger>& pLogger,
+      CesiumUtility::IntrusivePointer<const RasterOverlay> pOwner) const;
+};
+
+} // namespace CesiumRasterOverlays