Function solve_rgbcct

src/fl/gfx/rgbw_colorimetric.cpp.hpp:1042–1070

}

void solve_rgbcct(const RgbcctProfile& profile, float s_r, float s_g,
                  float s_b, float eta, float out[5]) FL_NOEXCEPT {
    ProfileCache warm_cache;
    ProfileCache cool_cache;
    build_profile_cache(&profile.warm_path, 0, &warm_cache);
    build_profile_cache(&profile.cool_path, 0, &cool_cache);

    float warm_rgbw[4] = {0};
    float cool_rgbw[4] = {0};
    solve_strict_subgamut(warm_cache, s_r, s_g, s_b, warm_rgbw);
    solve_strict_subgamut(cool_cache, s_r, s_g, s_b, cool_rgbw);

    eta = fl::clamp(eta, 0.0f, 1.0f);
    const float w_warm = 1.0f - eta;
    const float w_cool = eta;

    out[0] = w_warm * warm_rgbw[0] + w_cool * cool_rgbw[0];
    out[1] = w_warm * warm_rgbw[1] + w_cool * cool_rgbw[1];
    out[2] = w_warm * warm_rgbw[2] + w_cool * cool_rgbw[2];
    out[3] = w_warm * warm_rgbw[3];
    out[4] = w_cool * cool_rgbw[3];

    const float m = fl::max(
        fl::max(fl::max(out[0], out[1]), fl::max(out[2], out[3])), out[4]);
    if (m > 1.0f) {
        const float inv_m = 1.0f / m;
        for (int k = 0; k < 5; ++k) out[k] *= inv_m;
    }
}

} // namespace colorimetric_detail
} // namespace fl