static void Main(string[] args)
{
int deviceId = Initialize.QL2Initialize(filename_Password);
QLError error = QuickLink2API.QLDevice_Start(deviceId);
if (error != QLError.QL_ERROR_OK)
{
System.Console.WriteLine("Device not started successfully!");
System.Console.ReadLine();
return;
}
System.Console.WriteLine("Press any key to begin calibration.");
Console.ReadKey(true);
//Calibrate the device
int calibrationId = 0;
if (Calibrate.AutoCalibrate(deviceId, QLCalibrationType.QL_CALIBRATION_TYPE_16, ref calibrationId))
{
System.Console.WriteLine("\n\nPress \'q\' to quit. \n");
// If the calibration was successful then apply the calibration to the device.
QuickLink2API.QLDevice_ApplyCalibration(deviceId, calibrationId);
// Display the gaze information until the user quits.
QLFrameData frameData = new QLFrameData();
while ((!Console.KeyAvailable) || (Console.ReadKey(true).Key != ConsoleKey.Q))
{
QuickLink2API.QLDevice_GetFrame(deviceId, 10000, ref frameData);
if (frameData.WeightedGazePoint.Valid)
{
System.Console.Write("\rX:{0:F} Y:{1:F}", frameData.WeightedGazePoint.x,
frameData.WeightedGazePoint.y);
}
}
}
else
{
System.Console.WriteLine("The calibration did not finish successfully!");
System.Console.Read();
QuickLink2API.QLDevice_Stop(deviceId);
return;
}
// Stop the device.
QuickLink2API.QLDevice_Stop(deviceId);
return;
}
public void Test_0360_QLDevice_ApplyCalibration()
{
int calibrationId;
QLError error = QuickLink2API.QLCalibration_Create(0, out calibrationId);
Assert.AreEqual(QLError.QL_ERROR_OK, error);
error = QuickLink2API.QLCalibration_Load(Test_SetUp.Helper.CalibrationFilename, ref calibrationId);
Assert.AreNotEqual(QLError.QL_ERROR_INVALID_PATH, error, "Calibration file not found. You may need to run the SetupDevice example first.");
Assert.AreEqual(QLError.QL_ERROR_OK, error);
error = QuickLink2API.QLDevice_ApplyCalibration(Test_SetUp.Helper.DeviceId, calibrationId);
Assert.AreEqual(QLError.QL_ERROR_OK, error);
}
/// <summary>
/// <para>
/// Loads eye tracker device calibration from the location specified by
/// <see cref="CalibrationFilename"/>, or performs interactive calibration--if calibration cannot
/// be loaded from the file--and saves it to the calibration file. Optionally, (when the
/// <paramref name="promptToRecalibrate"/> parameter is true) this method will prompt the user to
/// re-perform interactive calibration even when the calibration has successfully been loaded
/// from the calibration file.
/// </para>
/// <para>
/// If interactive calibration is chosen (via the <paramref name="promptToRecalibrate"/>
/// parameter being set to true) or required (when no stored calibration file is present), the
/// user is prompted to choose 5, 9, or 16 point calibration, choose the duration for
/// display of each target (in milliseconds), and specify the device's distance from the user.
/// </para>
/// <para>
/// During interactive calibration, the user will be given the option to view the live video
/// stream from the device in order to adjust camera focus and orientation for best results.
/// </para>
/// <para>
/// Interactive calibration may attempt to improve its results by redisplaying some targets
/// several times immediately after the initial, ordered target sequence has been displayed.
/// During this improvement process, warning messages may appear on the console; this is normal
/// and informative only.
/// </para>
/// <para>
/// After a successful interactive calibration procedure, the user will be shown a score and
/// prompted to apply or discard the results. The score is the average of the left and right
/// scores for each target. Each left and right score for a target is the magnitude of the
/// distance of the projected gaze location from the center of the target. In other words, a
/// lower score is better.
/// </para>
/// </summary>
/// <seealso cref="SetupCalibration()"/>
/// <param name="promptToRecalibrate">
/// When true, the user will be asked if they would like to re-perform the eye tracker device's
/// calibration even when the calibration was successfully loaded from the calibration file.
/// </param>
/// <returns>
/// <para>
/// If calibration was loaded from file, this method returns true when the calibration has been
/// successfully applied to the device.
/// </para>
/// <para>
/// If calibration was not loaded from the device, then this method returns true when the
/// calibration procedure has been completed, the calibration has been applied to the device, the
/// calibration has been saved to the calibration file, and the eye tracker has been successfully
/// stopped.
/// </para>
/// <para>
/// If calibration was successfully loaded and applied from the calibration file, but the user
/// has chosen to re-perform the calibration procedure, then true is returned if the user cancels
/// the re-calibration before the actual calibration sequence begins, or when the newly performed
/// calibration has been completed, the newly performed calibration has been applied to the
/// device, the newly performed calibration has been saved to the calibration file, and the eye
/// tracker device has been stopped.
/// </para>
/// <para>
/// Otherwise, this method returns false.
/// </para>
/// </returns>
/// <exception cref="DllNotFoundException">
/// The QuickLink2 DLLs ("QuickLink2.dll," "PGRFlyCapture.dll," and "SMX11MX.dll") must be placed
/// in the same directory as your program's binary executable; otherwise, this exception will be
/// thrown.
/// </exception>
public bool SetupCalibration(bool promptToRecalibrate)
{
int deviceDistance;
if (!LoadDeviceDistance(this.SettingsFilename, out deviceDistance))
{
return(false);
}
if (deviceDistance == 0)
{
deviceDistance = DefaultDeviceDistance;
if (!SaveDeviceDistance(this.SettingsFilename, deviceDistance))
{
return(false);
}
}
if (!ApplyDeviceDistance(this.DeviceId, deviceDistance))
{
return(false);
}
bool calibrationLoadedFromFile = false;
// Load the calibration out of a file into a new calibration container.
int calibrationId = -1;
QLError error = QuickLink2API.QLCalibration_Load(this.CalibrationFilename, ref calibrationId);
if (error == QLError.QL_ERROR_OK)
{
// Apply the loaded calibration to the device.
error = QuickLink2API.QLDevice_ApplyCalibration(this.DeviceId, calibrationId);
if (error == QLError.QL_ERROR_OK)
{
Console.WriteLine("Calibration loaded from file.");
if (!promptToRecalibrate || !PromptToRecalibrate())
{
// Loaded from file and no prompt for recalibration
// requested, or recalibration cancelled.
return(true);
}
calibrationLoadedFromFile = true;
}
}
Console.WriteLine();
Console.WriteLine("Beginning calibration setup.");
bool showVideoStream;
if (!PromptForShowVideoStream(out showVideoStream))
{
// Cancelled.
return(calibrationLoadedFromFile);
}
else if (showVideoStream)
{
if (!ShowVideoStream())
{
// Error.
return(false);
}
}
Console.WriteLine();
Console.WriteLine("[Calibration Parameters]");
Console.WriteLine(" Press ENTER to use (default), or enter 'q' to quit.");
int newDeviceDistance;
if (!PromptForDeviceDistance(out newDeviceDistance))
{
// Cancelled.
return(calibrationLoadedFromFile);
}
else if (newDeviceDistance != deviceDistance)
{
deviceDistance = newDeviceDistance;
if (!SaveDeviceDistance(this.SettingsFilename, deviceDistance))
{
// Error.
return(false);
}
else if (!ApplyDeviceDistance(this.DeviceId, newDeviceDistance))
{
// Error.
return(false);
}
}
QLCalibrationType calibrationType;
if (!PromptForCalibrationType(out calibrationType))
{
// Cancelled.
return(calibrationLoadedFromFile);
}
int targetDuration;
if (!PromptForTargetDuration(out targetDuration))
{
// Cancelled.
return(calibrationLoadedFromFile);
}
Console.WriteLine();
Console.WriteLine("Beginning calibration.");
if (!Calibrate(this.DeviceId, this.CalibrationFilename, deviceDistance, calibrationType, targetDuration))
{
Console.WriteLine("Calibration failed.");
return(false);
}
else
{
Console.WriteLine("Calibration completed, applied, and saved.\n");
return(true);
}
}
private static bool Calibrate(int deviceId, string calibrationFilename, int deviceDistance, QLCalibrationType calibrationType, int targetDuration)
{
// Start the device.
QLError error = QuickLink2API.QLDevice_Start(deviceId);
if (error != QLError.QL_ERROR_OK)
{
Console.WriteLine("QLDevice_Start() returned {0}.", error.ToString());
return(false);
}
bool calibrationSuccessful = false;
using (CalibrationForm calibrationForm = new CalibrationForm(deviceId, calibrationType, targetDuration))
{
if (calibrationForm.Calibrate())
{
// Calculate the total average score.
float avg = 0;
for (int i = 0; i < calibrationForm.LeftScores.Length; i++)
{
avg += calibrationForm.LeftScores[i].score;
avg += calibrationForm.RightScores[i].score;
}
avg /= (float)calibrationForm.LeftScores.Length * 2f;
Console.WriteLine("Calibration Score: {0}.", avg);
while (true)
{
// Flush the input buffer.
while (Console.KeyAvailable)
{
Console.ReadKey(true);
}
if (!PromptToApplyCalibration())
{
Console.WriteLine("Not applying calibration.");
calibrationSuccessful = false;
break;
}
else
{
error = QuickLink2API.QLCalibration_Finalize(calibrationForm.CalibrationId);
if (error != QLError.QL_ERROR_OK)
{
Console.WriteLine("QLCalibration_Finalize() returned {0}.", error.ToString());
calibrationSuccessful = false;
break;
}
error = QuickLink2API.QLDevice_ApplyCalibration(deviceId, calibrationForm.CalibrationId);
if (error != QLError.QL_ERROR_OK)
{
Console.WriteLine("QLCalibration_ApplyCalibration() returned {0}", error.ToString());
calibrationSuccessful = false;
break;
}
error = QuickLink2API.QLCalibration_Save(calibrationFilename, calibrationForm.CalibrationId);
if (error != QLError.QL_ERROR_OK)
{
Console.WriteLine("QLCalibration_Save() returned {0}", error.ToString());
calibrationSuccessful = false;
break;
}
calibrationSuccessful = true;
break;
}
}
}
}
error = QuickLink2API.QLDevice_Stop(deviceId);
if (error != QLError.QL_ERROR_OK)
{
Console.WriteLine("QLDevice_Stop() returned {0}.", error.ToString());
return(false);
}
return(calibrationSuccessful);
}
