#include "BrokenLine.h"
#include <cmath>
#include <iostream>

BrokenLine::BrokenLine(const BrokenLine &obj) : length(obj.length), cap(obj.cap) {
  Point *a = new Point[cap];
  for (int i = 0; i < cap; i++)
    a[i] = obj.points[i];
  delete [] points;
  points = a;
}

double BrokenLine::dist(Point x, Point y) {
  return sqrt(pow(y.x - x.x, 2) + pow(y.y - x.y, 2));
}

int BrokenLine::size() { // получение количества точек
  return length;
}

Point& BrokenLine::getPoint(int i) {
  return points[i];
}

void BrokenLine::add(Point x) {
  if (cap == length) {
    cap *= 2;
    Point *a = new Point[cap];
    for (int i = 0; i < length; i++)
      a[i] = points[i];
    a[length++] = x;
    delete [] points;
    points = a;
  }
  else
    points[length++] = x;
}

void BrokenLine::split(double dis) { //разбиение отрезков пополам
  int j = 0;
  if (cap < length * 2)
    cap *= 2;
  Point *buff = new Point[cap];
  if (size() != 0)
    buff[j++] = points[0];
    //buff[0] = points[0];
  j = 1;
  for (int i = 1; i < length; i++) {
    if (dist(points[i], points[i - 1]) > dis)
      buff[j++] = Point((points[i].x + points[i - 1].x)/2, (points[i].y + points[i - 1].y)/2);
    buff[j++] = points[i];
  }
  if (dist(points[0], points[size() - 1]) > dis)
    buff[j++] = Point((points[0].x + points[size() - 1].x)/2, (points[0].y + points[size() - 1].y)/2);
  delete [] points;
  points = buff;
  length = j;
}

BrokenLine::~BrokenLine() {
   delete [] points;
}

BrokenLine& BrokenLine::operator= (const BrokenLine &obj) {
  if (this != &obj) {
    Point *new_a = new Point[obj.cap];
    for (int i = 0; i < obj.cap; i++)
      new_a[i] = obj.points[i];
    delete [] points;
    cap = obj.cap;
    length = obj.length;
    points = new_a;
  }
  return *this;
}