初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/CesiumGeometry/OctreeTileID.h

@@ -0,0 +1,76 @@
+#pragma once
+
+#include "Library.h"
+
+#include <cstdint>
+
+namespace CesiumGeometry {
+
+/**
+ * @brief A structure serving as a unique identifier for a node in an octree.
+ *
+ * This is one form of a {@link Cesium3DTilesSelection::TileID}.
+ *
+ * The identifier is composed of the level (with 0 being the level of the root
+ * tile), the x-, y-, and z-coordinate of the tile, referring to a grid
+ * coordinate system at the respective level.
+ */
+struct CESIUMGEOMETRY_API OctreeTileID {
+
+  /**
+   * @brief Creates a new instance.
+   */
+  constexpr OctreeTileID() : level(0), x(0), y(0), z(0){};
+
+  /**
+   * @brief Creates a new instance.
+   *
+   * @param level_ The level of the node, with 0 being the root.
+   * @param x_ The x-coordinate of the tile.
+   * @param y_ The y-coordinate of the tile.
+   * @param z_ The z-coordinate of the tile.
+   */
+  constexpr OctreeTileID(
+      uint32_t level_,
+      uint32_t x_,
+      uint32_t y_,
+      uint32_t z_) noexcept
+      : level(level_), x(x_), y(y_), z(z_) {}
+
+  /**
+   * @brief Returns `true` if two identifiers are equal.
+   */
+  constexpr bool operator==(const OctreeTileID& other) const noexcept {
+    return this->level == other.level && this->x == other.x &&
+           this->y == other.y && this->z == other.z;
+  }
+
+  /**
+   * @brief Returns `true` if two identifiers are *not* equal.
+   */
+  constexpr bool operator!=(const OctreeTileID& other) const noexcept {
+    return !(*this == other);
+  }
+
+  /**
+   * @brief The level of this tile ID, with 0 being the root tile.
+   */
+  uint32_t level;
+
+  /**
+   * @brief The x-coordinate of this tile ID.
+   */
+  uint32_t x;
+
+  /**
+   * @brief The y-coordinate of this tile ID.
+   */
+  uint32_t y;
+
+  /**
+   * @brief The z-coordinate of this tile ID.
+   */
+  uint32_t z;
+};
+
+} // namespace CesiumGeometry