bbb_description_prior.h

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/* =========================================================================== *
   |
   |  Copyright (c) 1994-2011 by Kobus Barnard (author)
   |
   |  Personal and educational use of this code is granted, provided that this
   |  header is kept intact, and that the authorship is not misrepresented, that
   |  its use is acknowledged in publications, and relevant papers are cited.
   |
   |  For other use contact the author (kobus AT cs DOT arizona DOT edu).
   |
   |  Please note that the code in this file has not necessarily been adequately
   |  tested. Naturally, there is no guarantee of performance, support, or fitness
   |  for any particular task. Nonetheless, I am interested in hearing about
   |  problems that you encounter.
   |
   |  Author:  Ernesto Brau
 * =========================================================================== */

/* $Id$ */

#ifndef B3_DESCRIPTION_PRIOR_H
#define B3_DESCRIPTION_PRIOR_H

#include <bbb_cpp/bbb_association_prior.h>
#include <bbb_cpp/bbb_activity_sequence_prior.h>
#include <bbb_cpp/bbb_trajectory_prior.h>
#include <bbb_cpp/bbb_description.h>
#include <bbb_cpp/bbb_physical_activity.h>
#include <bbb_cpp/bbb_intentional_activity.h>
#include <bbb_cpp/bbb_activity_library.h>
#include <boost/variant.hpp>

namespace kjb {
namespace bbb {

class Description_prior
{
public:
    Description_prior
    (
        const Intentional_activity& root,
        Association_prior& association_prior,
        Activity_sequence_prior& activity_sequence_prior,
        Trajectory_prior& trajectory_prior,
        const Activity_library& library
    ) :
        root_(root),
        ass_prior_p_(&association_prior),
        as_prior_p_(&activity_sequence_prior),
        traj_prior_p_(&trajectory_prior),
        lib_(library)
    {}

    const Intentional_activity& root_activity() const { return root_; }

    Association_prior& association_prior() const { return *ass_prior_p_; }

    As_prior& activity_sequence_prior() const { return *as_prior_p_; }

    Trajectory_prior& trajectory_prior() const { return *traj_prior_p_; }

    const Activity_library& library() const { return lib_; }

private:
    Intentional_activity root_;
    mutable Association_prior* ass_prior_p_;
    mutable Activity_sequence_prior* as_prior_p_;
    mutable Trajectory_prior* traj_prior_p_;
    const Activity_library& lib_;
};

class Sample_tree : public boost::static_visitor<>
{
public:
    Sample_tree(const Description_prior& prior, Description& description) :
        prior_(prior), description_(description) {}

    void operator()(const Intentional_activity& root);

    void operator()(const Physical_activity&) {}

private:
    const Description_prior& prior_;
    Description& description_;
};

Description sample(const Description_prior& prior);

}} // namespace kjb::bbb

#endif /*B3_DESCRIPTION_PRIOR_H */