初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/Cesium3DTilesSelection/TileID.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include "Library.h"
+
+#include <CesiumGeometry/OctreeTileID.h>
+#include <CesiumGeometry/QuadtreeTileID.h>
+
+#include <string>
+#include <variant>
+
+namespace Cesium3DTilesSelection {
+
+/**
+ * @brief An identifier for a {@link Tile} inside the tile hierarchy.
+ *
+ * This ID is stored in the tile as the {@link Tile::getTileID}.
+ * It is assigned to the tile at construction time, and may be
+ * used to identify and access the children of a given tile.
+ *
+ * Depending on the exact type of the tile and its contents, this
+ * identifier may have different forms:
+ *
+ * * A `std::string`: This is an explicitly-described tile and
+ *   the ID is the URL of the tile's content.
+ * * A {@link CesiumGeometry::QuadtreeTileID}: This is an implicit
+ *   tile in the quadtree. The URL of the tile's content is formed
+ *   by instantiating the context's template URL with this ID.
+ * * A {@link CesiumGeometry::OctreeTileID}: This is an implicit
+ *   tile in the octree. The URL of the tile's content is formed
+ *   by instantiating the context's template URL with this ID.
+ * * A {@link CesiumGeometry::UpsampledQuadtreeNode}: This tile doesn't
+ *   have any content, but content for it can be created by subdividing
+ *   the parent tile's content.
+ */
+typedef std::variant<
+    std::string,
+    CesiumGeometry::QuadtreeTileID,
+    CesiumGeometry::OctreeTileID,
+    CesiumGeometry::UpsampledQuadtreeNode>
+    TileID;
+
+/**
+ * @brief Utility functions related to {@link TileID} objects.
+ */
+struct CESIUM3DTILESSELECTION_API TileIdUtilities {
+  /**
+   * @brief Creates an unspecified string representation of the given {@link
+   * TileID}.
+   *
+   * The returned string will contain information about the given tile ID,
+   * depending on its type. The exact format and contents of this string
+   * is not specified. This is mainly intended for printing informative
+   * log messages.
+   *
+   * @param tileId The tile ID
+   * @return The string
+   */
+  static std::string createTileIdString(const TileID& tileId);
+};
+
+} // namespace Cesium3DTilesSelection