初始提交: UE5.3项目基础框架

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

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+#pragma once
+
+#include "Plane.h"
+
+namespace Cesium3DTilesSelection {
+
+/**
+ * @brief A culling volume, defined by four planes.
+ *
+ * The planes describe the culling volume that may be created for
+ * the view frustum of a camera. The normals of these planes will
+ * point inwards.
+ */
+struct CullingVolume final {
+
+  /**
+   * @brief The left plane of the culling volume.
+   *
+   * Defaults to (0,0,1), with a distance of 0.
+   */
+  CesiumGeometry::Plane leftPlane{glm::dvec3(0.0, 0.0, 1.0), 0.0};
+
+  /**
+   * @brief The right plane of the culling volume.
+   *
+   * Defaults to (0,0,1), with a distance of 0.
+   */
+  CesiumGeometry::Plane rightPlane{glm::dvec3(0.0, 0.0, 1.0), 0.0};
+
+  /**
+   * @brief The top plane of the culling volume.
+   *
+   * Defaults to (0,0,1), with a distance of 0.
+   */
+  CesiumGeometry::Plane topPlane{glm::dvec3(0.0, 0.0, 1.0), 0.0};
+
+  /**
+   * @brief The bottom plane of the culling volume.
+   *
+   * Defaults to (0,0,1), with a distance of 0.
+   */
+  CesiumGeometry::Plane bottomPlane{glm::dvec3(0.0, 0.0, 1.0), 0.0};
+};
+
+/**
+ * @brief Creates a {@link CullingVolume} for a perspective frustum.
+ *
+ * @param position The eye position
+ * @param direction The viewing direction
+ * @param up The up-vector of the frustum
+ * @param fovx The horizontal Field-Of-View angle, in radians
+ * @param fovy The vertical Field-Of-View angle, in radians
+ * @return The {@link CullingVolume}
+ */
+CullingVolume createCullingVolume(
+    const glm::dvec3& position,
+    const glm::dvec3& direction,
+    const glm::dvec3& up,
+    double fovx,
+    double fovy) noexcept;
+} // namespace Cesium3DTilesSelection