relative_camera_positions.h

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#ifndef LICORNEA_RELATIVE_CAMERA_POSITIONS_H_
#define LICORNEA_RELATIVE_CAMERA_POSITIONS_H_

#include "../../../lib/common.h"
#include "../../../lib/json.h"
#include <utility>
#include <map>
#include <vector>

namespace tlz {
    
struct relative_camera_positions {
    using reference_view_index = view_index;
    using target_view_index = view_index;
    using key_type = std::pair<reference_view_index, target_view_index>;

    using reference_target_positions_type = std::map<reference_view_index, std::vector<std::pair<target_view_index, vec2>>>;
    using target_reference_positions_type = std::map<target_view_index, std::vector<std::pair<reference_view_index, vec2>>>;

    std::map<key_type, vec2> positions;
    
    reference_target_positions_type to_reference_target_positions() const;
    target_reference_positions_type to_target_reference_positions() const;
    
    vec2& position(const reference_view_index& ref_idx, const target_view_index& target_idx)
        { return positions[std::make_pair(ref_idx, target_idx)]; }
    const vec2& position(const reference_view_index& ref_idx, const target_view_index& target_idx) const
        { return positions.at(std::make_pair(ref_idx, target_idx)); }
};

json encode_relative_camera_positions(const relative_camera_positions&);
relative_camera_positions decode_relative_camera_positions(const json&);

std::vector<view_index> get_reference_views(const relative_camera_positions&);
std::vector<view_index> get_target_views(const relative_camera_positions&);



relative_camera_positions relative_camera_positions_arg();

}

#endif