Method NormalizeAxis

source/ControllerLib/Controllers/XboxOneController.cpp:218–251

}

void XboxOneController::NormalizeAxis(int16_t x,
                                      int16_t y,
                                      uint8_t deadzonePercent,
                                      float *x_out,
                                      float *y_out)
{
    float x_val = x;
    float y_val = y;
    // Determine how far the stick is pushed.
    //This will never exceed 32767 because if the stick is
    //horizontally maxed in one direction, vertically it must be neutral(0) and vice versa
    float real_magnitude = std::sqrt(x_val * x_val + y_val * y_val);
    float real_deadzone = (32767 * deadzonePercent) / 100;
    // Check if the controller is outside a circular dead zone.
    if (real_magnitude > real_deadzone)
    {
        // Clip the magnitude at its expected maximum value.
        float magnitude = std::min(32767.0f, real_magnitude);
        // Adjust magnitude relative to the end of the dead zone.
        magnitude -= real_deadzone;
        // Normalize the magnitude with respect to its expected range giving a
        // magnitude value of 0.0 to 1.0
        //ratio = (currentValue / maxValue) / realValue
        float ratio = (magnitude / (32767 - real_deadzone)) / real_magnitude;

        *x_out = x_val * ratio;
        *y_out = y_val * ratio;
    }
    else
    {
        // If the controller is in the deadzone zero out the magnitude.
        *x_out = *y_out = 0.0f;
    }
}

//Pass by value should hopefully be optimized away by RVO
NormalizedButtonData XboxOneController::GetNormalizedButtonData()