TUserOptionsChecker.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2019, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#pragma once

#include <mrpt/core/exceptions.h>
#include <mrpt/graphs/CNetworkOfPoses.h>
#include <mrpt/poses/CPose3DPDFGaussianInf.h>
#include <mrpt/poses/CPosePDFGaussianInf.h>
#include <mrpt/system/filesystem.h>

#include <mrpt/graphslam/ERD/CEmptyERD.h>
#include <mrpt/graphslam/ERD/CICPCriteriaERD.h>
#include <mrpt/graphslam/ERD/CLoopCloserERD.h>
#include <mrpt/graphslam/GSO/CLevMarqGSO.h>
#include <mrpt/graphslam/NRD/CEmptyNRD.h>
#include <mrpt/graphslam/NRD/CFixedIntervalsNRD.h>
#include <mrpt/graphslam/NRD/CICPCriteriaNRD.h>

#include <iostream>
#include <string>
#include <vector>

namespace mrpt::graphslam::apps
{
/**\brief Properties struct for both the Registration Decider and Optimizer
 * classes
 */
struct TRegistrationDeciderOrOptimizerProps
{
    TRegistrationDeciderOrOptimizerProps() = default;
    ~TRegistrationDeciderOrOptimizerProps() = default;
    /**\brief Name of the decider or optimizer class
     */
    std::string name;
    /**\brief General description of the decicder or optimizer class*/
    std::string description;
    /**\brief Class indicating if the current decider/optimizer class can be
     * used
     * in a multi-robot SLAM operation
     */
    bool is_mr_slam_class{false};
    bool is_slam_2d{true};
    bool is_slam_3d{false};
};

/**\brief Properties struct for the Registration Decider classes.
 *
 * \ingroup mrpt_graphslam_grp
 */
struct TRegistrationDeciderProps : public TRegistrationDeciderOrOptimizerProps
{
    TRegistrationDeciderProps() = default;
    ~TRegistrationDeciderProps() = default;
    /**\brief Type of decider.
     *
     * Available options are:
     * - node
     * - edge
     */
    std::string type;
    /**\brief Rawlog formats that the decider can be used in */
    std::string rawlog_format;
    /**\brief Measurements that the current decider class can utilize */
    std::vector<std::string> observations_used;
};

/**\brief Properties struct for the Optimizer classes.
 *
 * \ingroup mrpt_graphslam_grp
 */
struct TOptimizerProps : public TRegistrationDeciderOrOptimizerProps
{
    TOptimizerProps() = default;
    ~TOptimizerProps() = default;
};

/**\brief Class containing the declarations of supplementary methods that can
 * be used in application-related code.
 * Class instance can be handy for adding keeping the available
 * deciders/optimizers in a compact manner and for verifying whether a given
 * decider can be used.
 *
 * \ingroup mrpt_graphslam_grp
 */
template <class GRAPH_t>
struct TUserOptionsChecker
{
    /**\name handy typedefs for the creation of deciders/optimzer instances from
     * the corresponding strings
     */
    /**\{*/
    using constraint_t = typename GRAPH_t::constraint_t;
    using pose_t = typename GRAPH_t::constraint_t::type_value;
    using node_regs_t = std::map<
        std::string,
        mrpt::graphslam::deciders::CNodeRegistrationDecider<GRAPH_t>* (*)()>;
    using edge_regs_t = std::map<
        std::string,
        mrpt::graphslam::deciders::CEdgeRegistrationDecider<GRAPH_t>* (*)()>;
    using optimizers_t = std::map<
        std::string,
        mrpt::graphslam::optimizers::CGraphSlamOptimizer<GRAPH_t>* (*)()>;

    /**\}*/

    //
    // methods
    //
    /**\brief Constructor */
    TUserOptionsChecker();
    /**\brief Destructor */
    virtual ~TUserOptionsChecker();
    /**\brief Create the necessary mappings from strings to the corresponding
     * instance creation functors.
     *
     * Method is used for populating a map from string to instance creation
     * function. The decider/optimzer can then be spawned according to the user
     * selection.
     *
     */
    virtual void createDeciderOptimizerMappings();
    virtual void _createDeciderOptimizerMappings();
    /**\brief Populate the available decider, optimizer classes available in
     * user applications
     */
    virtual void populateDeciderOptimizerProperties();
    /**\brief Check if the given registrator decider exists in the vector of
     * deciders.
     * \param[in] given_reg String specifying the type of decider - This should
     * either be "node" or "edge"
     * \return True if it exists, false otherwise
     */
    virtual bool checkRegistrationDeciderExists(
        std::string given_reg, std::string reg_type) const;

    /**\brief Check if the given optimizer exists in the vector of optimizers.
     * \return True if it exists, false otherwise
     */
    virtual bool checkOptimizerExists(std::string given_opt) const;

    /**\brief Print the registration deciders vector in a formatted manner to
     * the
     * standard output
     * \param[in] reg_type Method prints both the node registration
     * and edge registration deciders of the given vector unless specified
     * otherwise. The available argument options are "node", "edge", "all"
     */
    virtual void dumpRegistrarsToConsole(std::string reg_type = "all") const;
    /**\brief Print the optimizers vector in a formatted manner to the standard
     * output.
     */
    virtual void dumpOptimizersToConsole() const;

    /**\name Methods for initializing decider/optimizer instances based on the
     * user
     * command line choices - http://stackoverflow.com/a/582456/2843583
     *
     * \warning Caller is responsible for deleting the initialized instances
     */
    /**\{*/
    template <class T>
    static mrpt::graphslam::deciders::CNodeRegistrationDecider<GRAPH_t>*
        createNodeRegistrationDecider()
    {
        return new T;
    }
    template <class T>
    static mrpt::graphslam::deciders::CEdgeRegistrationDecider<GRAPH_t>*
        createEdgeRegistrationDecider()
    {
        return new T;
    }
    template <class T>
    static mrpt::graphslam::optimizers::CGraphSlamOptimizer<GRAPH_t>*
        createGraphSlamOptimizer()
    {
        return new T;
    }
    /**}*/

    /**\name Mappings from registration decider/optimizer names to functors
     * for creating instances of the corresponding classes
     */
    /**\{*/
    node_regs_t node_regs_map;
    edge_regs_t edge_regs_map;
    optimizers_t optimizers_map;
    /**\}*/

    /**\name Vectors containing descriptions about the available
     * deciders/optimizers.
     *
     * Handy for displaying information to the user (e.g. in help text)
     */
    /**\{*/
    std::vector<TRegistrationDeciderProps*> regs_descriptions;
    std::vector<TOptimizerProps*> optimizers_descriptions;
    /**\}*/

    const std::string sep_header;
    const std::string sep_subheader;
};
}  // namespace mrpt::graphslam::apps
#include "TUserOptionsChecker_impl.h"