初始提交: UE5.3项目基础框架

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

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+#pragma once
+
+#include "Library.h"
+
+#include <glm/vec3.hpp>
+
+namespace CesiumGeometry {
+
+/**
+ * @brief An Axis-Aligned Bounding Box (AABB), where the axes of the box are
+ * aligned with the axes of the coordinate system.
+ */
+struct CESIUMGEOMETRY_API AxisAlignedBox final {
+
+  /**
+   * @brief Creates an empty AABB with a length, width, and height of zero,
+   * with the center located at (0, 0, 0).
+   */
+  constexpr AxisAlignedBox() noexcept
+      : minimumX(0.0),
+        minimumY(0.0),
+        minimumZ(0.0),
+        maximumX(0.0),
+        maximumY(0.0),
+        maximumZ(0.0),
+        lengthX(0.0),
+        lengthY(0.0),
+        lengthZ(0.0),
+        center(0.0) {}
+
+  /**
+   * @brief Creates a new AABB using the range of coordinates the box covers.
+   *
+   * @param minimumX_ The minimum X coordinate within the box.
+   * @param minimumY_ The minimum Y coordinate within the box.
+   * @param minimumZ_ The minimum Z coordinate within the box.
+   * @param maximumX_ The maximum X coordinate within the box.
+   * @param maximumY_ The maximum Y coordinate within the box.
+   * @param maximumZ_ The maximum Z coordinate within the box.
+   */
+  constexpr AxisAlignedBox(
+      double minimumX_,
+      double minimumY_,
+      double minimumZ_,
+      double maximumX_,
+      double maximumY_,
+      double maximumZ_) noexcept
+      : minimumX(minimumX_),
+        minimumY(minimumY_),
+        minimumZ(minimumZ_),
+        maximumX(maximumX_),
+        maximumY(maximumY_),
+        maximumZ(maximumZ_),
+        lengthX(maximumX - minimumX),
+        lengthY(maximumY - minimumY),
+        lengthZ(maximumZ - minimumZ),
+        center(
+            0.5 * (maximumX + minimumX),
+            0.5 * (maximumY + minimumY),
+            0.5 * (maximumZ + minimumZ)) {}
+
+  /**
+   * @brief The minimum x-coordinate.
+   */
+  double minimumX;
+
+  /**
+   * @brief The minimum y-coordinate.
+   */
+  double minimumY;
+
+  /**
+   * @brief The minimum z-coordinate.
+   */
+  double minimumZ;
+
+  /**
+   * @brief The maximum x-coordinate.
+   */
+  double maximumX;
+
+  /**
+   * @brief The maximum y-coordinate.
+   */
+  double maximumY;
+
+  /**
+   * @brief The maximum z-coordinate.
+   */
+  double maximumZ;
+
+  /**
+   * @brief The length of the box on the x-axis.
+   */
+  double lengthX;
+
+  /**
+   * @brief The length of the box on the y-axis.
+   */
+  double lengthY;
+
+  /**
+   * @brief The length of the box on the z-axis.
+   */
+  double lengthZ;
+
+  /**
+   * @brief The center of the box.
+   */
+  glm::dvec3 center;
+
+  /**
+   * @brief Checks if this AABB contains the given position.
+   *
+   * @param position The position to check.
+   * @returns True if this AABB contains the position, false otherwise.
+   */
+  constexpr bool contains(const glm::dvec3& position) const noexcept {
+    return position.x >= this->minimumX && position.x <= this->maximumX &&
+           position.y >= this->minimumY && position.y <= this->maximumY &&
+           position.z >= this->minimumZ && position.z <= this->maximumZ;
+  }
+};
+
+} // namespace CesiumGeometry