# CSE 142 Python sessions
# This file implements a new class of objects named Point.

from math import *

class Point:
    # fields
    x = 0
    y = 0
    
    # constructor
    def __init__(self, x = 0, y = 0):
        self.x = x
        self.y = y
    
    # methods
    def translate(self, dx, dy):
        self.x += dx
        self.y += dy

    def set_location(self, x, y):
        self.x = x
        self.y = y

    def distance_from_origin(self):
        return sqrt(self.x * self.x + self.y * self.y)

    def distance(self, other):
        dx = self.x - other.x
        dy = self.y - other.y
        return sqrt(dx*dx + dy*dy)
    
    # This is the equivalent of Java's toString method.
    def __str__(self):
        return "(" + str(self.x) + ", " + str(self.y) + ")"

    # operator overloading
    # This special method implements a + operation on two Points.
    def __add__(self, other):
        return Point(self.x + other.x, self.y + other.y)