#ifdef HAS_OPENCV3
#include <opencv2/core.hpp> //Any OPENCV3 code
#else
#include <opencv2/core/core.hpp> //Any Opencv2 code
#endif

unsigned* max2_distance(std::vector<cv::Point> hull);

bool
similar_fit(cv::Point a, cv::Point b, cv::Point newpoint);
bool
similar_fit(cv::Point a, cv::Point b, cv::Point newpoint, float tolerance_degrees);
bool
similar_fit(std::vector<cv::Point> group, cv::Point newpoint);

std::vector<std::vector<cv::Point>>
simplify_hull(std::vector<cv::Point> hull);
std::vector<std::vector<cv::Point>>
simplify_hull(std::vector<cv::Point> hull, double mindistance);

std::vector<cv::Point>
find_longest_line(std::vector<cv::Point> hull, unsigned begin, unsigned end);