初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/CesiumQuantizedMeshTerrain/Layer.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include "Library.h"
+
+#include <CesiumGeometry/QuadtreeTilingScheme.h>
+#include <CesiumGeospatial/BoundingRegion.h>
+#include <CesiumGeospatial/Projection.h>
+#include <CesiumQuantizedMeshTerrain/LayerSpec.h>
+
+#include <optional>
+
+namespace CesiumQuantizedMeshTerrain {
+
+/**
+ * @brief A quantized-mesh terrain layer.json.
+ */
+struct Layer : public LayerSpec {
+  /**
+   * @brief Gets the projection specified by this layer.json.
+   *
+   * @return The projection, or std::nullopt if this layer.json does not specify
+   * a valid projection.
+   */
+  std::optional<CesiumGeospatial::Projection>
+  getProjection(const CesiumGeospatial::Ellipsoid& ellipsoid
+                    CESIUM_DEFAULT_ELLIPSOID) const noexcept;
+
+  /**
+   * @brief Gets the tiling scheme specified by this layer.json.
+   *
+   * @return The tiling scheme, or std::nullopt if this layer.json does not
+   * specify a tiling scheme.
+   */
+  std::optional<CesiumGeometry::QuadtreeTilingScheme>
+  getTilingScheme(const CesiumGeospatial::Ellipsoid& ellipsoid
+                      CESIUM_DEFAULT_ELLIPSOID) const noexcept;
+
+  /**
+   * @brief Gets the bounding region for the root tile.
+   *
+   * The rectangle will be the maximum rectangle for the terrain's projection
+   * (geographic or web mercator). The heights will range from -1000.0 to
+   * 9000.0.
+   *
+   * @return The bounding rectangle, or std::nullopt if the bounding region
+   * cannot be determined from this layer.json.
+   */
+  std::optional<CesiumGeospatial::BoundingRegion>
+  getRootBoundingRegion(const CesiumGeospatial::Ellipsoid& ellipsoid
+                            CESIUM_DEFAULT_ELLIPSOID) const noexcept;
+};
+
+} // namespace CesiumQuantizedMeshTerrain