//
// Created by baiguwen on 2022/4/24.
//
#include "white_noise.h"

void white_noise::set_config(const nlohmann::json &config) {
    try {
        mean_               = jsonValue(config, "WHITE_NOISE_MEAN");
        standard_deviation_ = jsonValue(config, "WHITE_NOISE_STDDEV");
        normal_distribution_.reset(new std::normal_distribution<>(mean_, standard_deviation_));
        config_ = config;
    } catch (...) {

    }
}

nlohmann::json white_noise::config() {
    return config_;
}


double white_noise::eval(double value) {
    if (normal_distribution_) {
        value = value + normal_distribution_->operator()(mt19937_);
    }
    return value;
}