#include "histo.h"
#include "opencv2/core/types.hpp"
#include <cassert>
#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>
#include <iostream>
#include <string>
#include <vector>

using namespace cv;

int main(){
    Mat img = imread("../some_objects.png", IMREAD_COLOR);
    Mat gray, mask;
    cvtColor(img, gray, COLOR_BGR2GRAY);
    threshold(gray, mask, 230, 255, THRESH_BINARY);

    std::vector<std::vector<Point>> contours;
    findContours(mask, contours, RETR_EXTERNAL, CHAIN_APPROX_NONE);

    for(int i = 0; i < contours.size(); i++){
        Mat canvas = img.clone();
        for(int j = 0; j < i; j++){
            double d = matchShapes(contours[i], contours[j], CONTOURS_MATCH_I2, 0);
        
            std::string s = to_string(d);

            drawContours(canvas, contours, i, Scalar(0,0,255), 2);
            drawContours(canvas, contours, j, Scalar(0,0,255), 2);

            line(canvas, contours[i][0], contours[j][0], Scalar(100,100,100), 2);
        
            putText(canvas, s, contours[j][0], FONT_HERSHEY_PLAIN, 1.5, Scalar(255, 255, 255));
        }
    }

    imshow("img", img);

    while(waitKey(3) != 'q');
    return 0;
}