#pragma once
#define _USE_MATH_DEFINES

#include "opencv2/imgproc/imgproc.hpp" 
#include "opencv2/highgui/highgui.hpp"
#include <iostream>
#include <vector>
#include <string>
#include <math.h>

using namespace std;
using namespace cv;

class FeatureExtractor
{
public:
	FeatureExtractor(vector<Point> contour);
	~FeatureExtractor();

	void Extract(Mat& ref);

	double AspectRatio();
	double Circularity();
	RotatedRect Rectangle();
	double getMinEnclosingCircleRadius();
	double getPerimeter();
	double getBendingEnergy();
	double getConvexHullBendingEnergy();
	double convexDefects();

	static void findContour(Mat &image, vector<Point> &contour);
private:
	vector<Point> contour;
	RotatedRect rect;
	int rotateX[8] = { 0,  1, 1, 1, 0, -1, -1, -1 };
	int rotateY[8] = { -1, -1, 0, 1, 1,  1,  0, -1 };
	int discoverNextRelativeDirection(const cv::Point &pos, const cv::Point &target);
};