#include "Point.h"

#include <cmath>  // sqrt

Point::Point(const int x, const int y) {
  // BAD STYLE: shouldn't mix-and-match direct field access (x_)
  // and access via this (this->y_).
  x_ = x;
  this->y_ = y;  // this-> is optional, unless names conflict
}

double Point::Distance(const Point& p) const {
  // We can access p's x_ and y_ variables either through the
  // get_x(), get_y() accessor functions, or the x_, y_ private
  // member variables directly, since we're in a member function of
  // the same class (BAD STYLE to mix-and-match, though).
  double distance = (x_ - p.get_x()) * (x_ - p.get_x());
  distance += (y_ - p.y_) * (y_ - p.y_);
  return sqrt(distance);
}

void Point::SetLocation(const int x, const int y) {
  x_ = x;
  y_ = y;
}