param_filter.h

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#ifndef LSST_GAUSS2D_FIT_PARAM_FILTER_H
#define LSST_GAUSS2D_FIT_PARAM_FILTER_H
 
#include <cstddef>
#include <optional>
 
#include "channel.h"
#include "param_defs.h"
 
namespace g2f = lsst::gauss2d::fit;
 
namespace lsst::gauss2d::fit {

struct ParamFilter {
    bool fixed = true;
    bool free = true;
    bool linear = true;
    bool nonlinear = true;
    std::optional<std::reference_wrapper<const Channel>> channel = std::nullopt;
};
struct ParamFilter {…};

template <typename t>
inline void insert_param(g2f::ParamBase& param, t& params, ParamFilter* filter = nullptr) {
    bool is_fixed = param.get_fixed();
    bool is_linear = param.get_linear();
    if ((filter == nullptr)
        || (((is_fixed == filter->fixed) || (is_fixed != filter->free))
            && ((is_linear == filter->linear) || (is_linear != filter->nonlinear)))) {
        params.insert(params.end(), param);
    }
}
inline void insert_param(g2f::ParamBase& param, t& params, ParamFilter* filter = nullptr) {…}

template <typename t>
void insert_param_channel(const lsst::gauss2d::fit::Channel& channel, g2f::ParamBase& param, t& params,
                          ParamFilter* filter) {
    if ((filter == nullptr) || (filter->channel == std::nullopt) || (filter->channel == channel)) {
        insert_param(param, params, filter);
    }
}
void insert_param_channel(const lsst::gauss2d::fit::Channel& channel, g2f::ParamBase& param, t& params, {…}

template <typename t>
inline void insert_params_ref(const t& params_in, t& params_out, ParamFilter* filter = nullptr) {
    if (filter != nullptr)
        for (auto& p : params_in) insert_param<t>(p.get(), params_out, filter);
    else
        for (auto& p : params_in) params_out.push_back(p);
}
inline void insert_params_ref(const t& params_in, t& params_out, ParamFilter* filter = nullptr) {…}

template <typename t>
inline void insert_params(const t params_in, t& params_out, ParamFilter* filter = nullptr) {
    insert_params_ref<t>(params_in, params_out, filter);
}
inline void insert_params(const t params_in, t& params_out, ParamFilter* filter = nullptr) {…}
 
}  // namespace lsst::gauss2d::fit
#endif  // GAUSS2D_FIT_PARAM_FILTER_H