OpenGazer/Calibrator.cpp at master · PerfectedApp/OpenGazer · GitHub

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#include"Calibrator.h"
#include"Application.h"

Calibrator::Calibrator(const std::vector<Point> &points) :
 _window(2, false)	// Create this window in the second screen
{
	_points = points;

// Clear gaze tracker components' calibration info
for (int i=0; i<Application::config.gaze_components.size(); i++){
 GazeTrackerComponent* comp = (GazeTrackerComponent*) Application::getComponent(Application::config.gaze_components[i]);
 comp->clear();
 }

	_frameNumber = -1;
	needRecalibration = false;

	_screenImage.create(cv::Size(_window.size().width(), _window.size().height()), CV_8UC3);
	_targetImage = cv::imread("./target.png", CV_LOAD_IMAGE_COLOR);
	_window.setWindowTitle("Opengazer");
}

Calibrator::~Calibrator() {}

// Main processing function
voidCalibrator::process() {
if(Application::Signals::initiateCalibrationFrameNo == Application::Components::videoInput->frameCount) {
start();
	}

if(!isActive())
return;

	needRecalibration = false;

// Increment the frame counter
	_frameNumber++;

if (shouldStartNextPoint()) {
pointStart();
	} else {
if (isLastFrame()) {
pointEnd();
 }

if (isFinished()) {
calibrationEnded();
 }
	}
}


// Start calibration procedure. Reset frame counter and save target point
// locations
voidCalibrator::start() {
	_frameNumber = 0;
	_window.show();
	Application::Data::calibrationTargets.clear();
	Application::status = Application::STATUS_CALIBRATING;
}

// Displays the next target on screen
voidCalibrator::pointStart() {
// Get the current target
	Point target = getActivePoint();

// Calculate bounds for copying target image to screen image
	cv::Rect targetBounds = cv::Rect(0, 0, _targetImage.size().width, _targetImage.size().height);
	cv::Rect screenBounds = cv::Rect(target.x - _targetImage.size().width/2, target.y - _targetImage.size().height/2, _targetImage.size().width, _targetImage.size().height);

// Check bounds
if (screenBounds.x < 0) {
 screenBounds.width += screenBounds.x; // Remove the amount from the width
 targetBounds.x -= screenBounds.x;
 targetBounds.width += screenBounds.x;
 screenBounds.x = 0;
	}

if (screenBounds.y < 0) {
 screenBounds.height += screenBounds.y; // Remove the amount from the height
 targetBounds.y -= screenBounds.y;
 targetBounds.height += screenBounds.y;
 screenBounds.y = 0;
	}

if (screenBounds.width + screenBounds.x > _screenImage.size().width) {
 screenBounds.width = _screenImage.size().width - screenBounds.x;
	}

if (screenBounds.height + screenBounds.y > _screenImage.size().height) {
 screenBounds.height = _screenImage.size().height - screenBounds.y;
	}

// Fill the screen image with solid color and copy the target image
	_screenImage.setTo(cv::Scalar(153, 75, 75));
_targetImage(targetBounds).copyTo(_screenImage(screenBounds));
	_window.showImage(_screenImage);
}

voidCalibrator::pointEnd() {
	Application::Data::calibrationTargets.push_back(getActivePoint());
	needRecalibration = true;
}

// Aborts calibration
voidCalibrator::abortCalibration() {
	_window.hide();
	_frameNumber = -1;
}

voidCalibrator::calibrationEnded() {
	_window.hide();
	_frameNumber = -1;
	Application::status = Application::STATUS_CALIBRATED;
	Application::isTrackerCalibrated = true;
}

// Checks if calibrator is active
boolCalibrator::isActive() {
return _frameNumber >= 0;
}

// Returns current point's coordinates
Point Calibrator::getActivePoint() {
if(isActive())
return _points[getPointNumber()];
else
returnPoint(-1, -1);
}

// Returns the index of current point
intCalibrator::getPointNumber() {
if(isActive())
return (_frameNumber-1) / Application::dwelltimeParameter;
else
return -1;
}

// Returns the frame number for the current point
intCalibrator::getPointFrameNo() {
return (_frameNumber-1) % Application::dwelltimeParameter;
}

//
boolCalibrator::isLastFrame() {
returngetPointFrameNo() == (Application::dwelltimeParameter-1);
}

// Checks if current point is the last
boolCalibrator::isLastPoint() {
returngetPointNumber() == (_points.size() - 1);
}

// Checks if calibration is finished
boolCalibrator::isFinished() {
returngetPointNumber() >= _points.size();
}

// Decides whether calibrator should switch to next point (display it on screen)
boolCalibrator::shouldStartNextPoint() {
return (getPointFrameNo() == 0) && !isFinished();
}

voidCalibrator::draw() {
if(isActive()) {
 Point activePoint = getActivePoint();

cv::circle(Application::Components::videoInput->debugFrame,
Utils::mapFromSecondMonitorToDebugFrameCoordinates(cv::Point(activePoint.x, activePoint.y)),
8, cv::Scalar(0, 0, 255), -1, 8, 0);
	}
}