#include <iostream>
#include <opencv2/opencv.hpp>
#include <opencv2/features2d.hpp>
#include <opencv2/xfeatures2d.hpp>


using namespace std;
using namespace cv;

Point P1(0, 0);
Point P2(0, 0);
bool clicked = false;
Mat img0;
Mat captured;
bool saved = false;


void CallBackFunc(int event, int x, int y, int flags, void* userdata)
{

	if (event == EVENT_LBUTTONDOWN && clicked == false)
	{
		cout << "Left button of the mouse is clicked - position (" << x << ", " << y << ")" << endl;
		P1.x = x;
		P1.y = y;
		P2.x = x;
		P2.y = y;
		Rect(P1, P2);
		clicked = true;
	}
	if (event == EVENT_MOUSEMOVE && clicked == true)
	{
		P2.x = x;
		P2.y = y;
	}
	if (event == EVENT_LBUTTONUP)
	{
		cout << "Left button of the mouse is released - position (" << x << ", " << y << ")" << endl;
		P2.x = x;
		P2.y = y;
		saved = false;
		clicked = false;
	}
	if (event == EVENT_RBUTTONUP)
	{
		P1.x = 0;
		P1.y = 0;
		P2.x = 0;
		P2.y = 0;

		clicked = false;

	}
}



int main() {


	FileStorage fs("lifecam.yaml", FileStorage::READ);
	if (!fs.isOpened()) {
		cerr << "failed to open camera.yml" << endl;
		return -1;
	}


	cv::VideoCapture videoCapture(0);
	if (!videoCapture.isOpened())// check if we succeeded
		return -1;
	videoCapture.set(CV_CAP_PROP_FRAME_WIDTH, 1200);
	videoCapture.set(CV_CAP_PROP_FRAME_HEIGHT, 720);





	for (;;)
	{
		Mat frame;
		videoCapture >> frame; // get a new frame from camera
		cvtColor(frame, img0, CV_RGBA2RGB); // Farbmodus
		namedWindow("ImageDisplay", 1);
		setMouseCallback("ImageDisplay", CallBackFunc, NULL);
		captured = img0(Rect(P1, P2)).clone();
		rectangle(img0, P1, P2, Scalar(0, 0, 255), 1, 8);
		imshow("ImageDisplay", img0);
		if (captured.rows  > 0 && captured.cols > 0 and saved == false ) {
			imshow("Captured", captured);
		}
		if (waitKey(30) == 99) break;

		if (waitKey(30) == 115 && saved == false)
		{
			imwrite("captured.jpg", captured);
			Mat img = imread("captured.jpg");
			cvDestroyWindow("Captured");
			imshow("SavePicture", img);
			saved = true;

		}




	}



	return 0;
}