初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/CesiumRuntime/Public/CesiumTile.h

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+// Copyright 2020-2024 CesiumGS, Inc. and Contributors
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include <Cesium3DTilesSelection/BoundingVolume.h>
+#include "CesiumTile.generated.h"
+
+/**
+ * A UObject representation of a Cesium Tile.
+ * This class provides an interface for accessing properties of a Cesium Tile
+ * from within Unreal Engine. It exposes the Bounds property, which can be
+ * accessed from Blueprints, and provides a helper function for testing
+ * intersection with a primitive component.
+ */
+UCLASS()
+class CESIUMRUNTIME_API UCesiumTile : public UPrimitiveComponent {
+  GENERATED_BODY()
+
+  glm::dmat4 _tileTransform;
+
+  Cesium3DTilesSelection::BoundingVolume _tileBounds =
+      CesiumGeometry::OrientedBoundingBox(glm::dvec3(0.0), glm::dmat3(1.0));
+
+public:
+  /**
+   * Tests whether a primitive component overlaps with this tile using a sphere
+   * and box comparison. This function provides a convenient way to test for
+   * intersection between a primitive component and this tile.
+   */
+  UFUNCTION(BlueprintCallable, Category = "Cesium")
+  bool TileBoundsOverlapsPrimitive(const UPrimitiveComponent* Other) const;
+
+  /**
+   * Checks if this tile is fully inside the given primitive component using a
+   * sphere and box comparison. It uses the FBox::IsInside function to compare
+   * the FBox of the component and the tile's bounds.
+   */
+  UFUNCTION(BlueprintCallable, Category = "Cesium")
+  bool
+  PrimitiveBoxFullyContainsTileBounds(const UPrimitiveComponent* Other) const;
+
+  virtual FBoxSphereBounds
+  CalcBounds(const FTransform& LocalToWorld) const override;
+
+  friend class CesiumTileExcluderAdapter;
+};