Method SetColor

Controllers/KasaSmartController/KasaSmartController.cpp:149–214

}

void KasaSmartController::SetColor(unsigned char red, unsigned char green, unsigned char blue)
{
    if(!is_initialized)
    {
        return;
    }

    RGBColor color = ToRGBColor(red, green, blue);
    hsv_t hsv;
    rgb2hsv(color, &hsv);

    /*------------------------------------------*\
    | Normalize case where hue is "-1" undefined |
    \*------------------------------------------*/
    unsigned int normalized_hue = hsv.hue;
    if(hsv.hue == (unsigned int)-1)
    {
        normalized_hue = 0;
    }
    /*--------------------------------------------------*\
    | Kasa smart lights take values out of 100 for these |
    \*--------------------------------------------------*/
    unsigned int normalized_saturation = hsv.saturation * 100 / 255;
    unsigned int normalized_value      = hsv.value * 100 / 255;


    /*-------------------*\
    | Open TCP connection |
    \*-------------------*/
    if(!port.connected && !port.tcp_client_connect() && ++retry_count >= KASA_SMART_MAX_CONNECTION_ATTEMPTS)
    {
        is_initialized = false;
        return;
    }

    /*----------------------------*\
    | Hack to handle/emulate black |
    \*----------------------------*/
    if(normalized_saturation == 0 && normalized_value == 0)
    {
        TurnOff();
        return;
    }

    /*------------------------------*\
    | Format set light state command |
    \*------------------------------*/
    const std::string set_lightstate_command_format(KASA_SMART_SET_LIGHT_STATE_COMMAND_FORMAT);
    int size = std::snprintf(nullptr, 0, set_lightstate_command_format.c_str(), normalized_hue, normalized_saturation, normalized_value) + 1;
    if(size <= 0)
    {
        port.tcp_close();
        return;
    }
    char* buf = new char[size];
    std::snprintf(buf, size, set_lightstate_command_format.c_str(), normalized_hue, normalized_saturation, normalized_value);
    std::string set_lightstate_command(buf, buf + size - 1);
    delete[] buf;