给下列程序添加英文注释：namespace nav_core { /** * @class BaseGlobalPlanner * @brief Provides an interface for global planners used in navigation. All global planners written as plugins for the navigation stack must adhere to this interface. / class BaseGlobalPlanner{ public: /* * @brief Given a goal pose in the world, compute a plan * @param start The start pose * @param goal The goal pose * @param plan The plan... filled by the planner * @return True if a valid plan was found, false otherwise / virtual bool makePlan(const geometry_msgs::PoseStamped& start, const geometry_msgs::PoseStamped& goal, std::vector<geometry_msgs::PoseStamped>& plan) = 0; /* * @brief Given a goal pose in the world, compute a plan * @param start The start pose * @param goal The goal pose * @param plan The plan... filled by the planner * @param cost The plans calculated cost * @return True if a valid plan was found, false otherwise / virtual bool makePlan(const geometry_msgs::PoseStamped& start, const geometry_msgs::PoseStamped& goal, std::vector<geometry_msgs::PoseStamped>& plan, double& cost) { cost = 0; return makePlan(start, goal, plan); } /* * @brief Initialization function for the BaseGlobalPlanner * @param name The name of this planner * @param costmap_ros A pointer to the ROS wrapper of the costmap to use for planning / virtual void initialize(std::string name, costmap_2d::Costmap2DROS costmap_ros) = 0; /** * @brief Virtual destructor for the interface */ virtual ~BaseGlobalPlanner(){} protected: BaseGlobalPlanner(){} }; }; // namespace nav_core #endif // NAV_CORE_BASE_GLOBAL_PLANNER_H

/**
* @file base_global_planner.h
* @brief Provides an interface for global planners used in navigation.
* All global planners written as plugins for the navigation stack must adhere to this interface.
*/

namespace nav_core {
/**
* @class BaseGlobalPlanner
* @brief Provides an interface for global planners used in navigation.
* All global planners written as plugins for the navigation stack must adhere to this interface.
*/
class BaseGlobalPlanner{
public:
/**
* @brief Given a goal pose in the world, compute a plan
* @param start The start pose
* @param goal The goal pose
* @param plan The plan... filled by the planner
* @return True if a valid plan was found, false otherwise
*/
virtual bool makePlan(const geometry_msgs::PoseStamped& start, const geometry_msgs::PoseStamped& goal, std::vector<geometry_msgs::PoseStamped>& plan) = 0;

/**
* @brief Given a goal pose in the world, compute a plan
* @param start The start pose
* @param goal The goal pose
* @param plan The plan... filled by the planner
* @param cost The plans calculated cost
* @return True if a valid plan was found, false otherwise
*/
virtual bool makePlan(const geometry_msgs::PoseStamped& start, const geometry_msgs::PoseStamped& goal, std::vector<geometry_msgs::PoseStamped>& plan, double& cost) {
cost = 0;
return makePlan(start, goal, plan);
}

/**
* @brief Initialization function for the BaseGlobalPlanner
* @param name The name of this planner
* @param costmap_ros A pointer to the ROS wrapper of the costmap to use for planning
*/
virtual void initialize(std::string name, costmap_2d::Costmap2DROS costmap_ros) = 0;

/**
* @brief Virtual destructor for the interface
*/
virtual ~BaseGlobalPlanner(){}

protected:
BaseGlobalPlanner(){}
};
}; // namespace nav_core

#endif // NAV_CORE_BASE_GLOBAL_PLANNER_H