import turtle
turtle.tracer(0,0)

class punkt(object):
    def __init__(self,x,y):
        self.__x=x
        self.__y=y
 
    def getxy(self):
        return(self.__x,self.__y)
 
    def draw(self,skala,dx,dy,nazwa):
        turtle.speed(0)
        turtle.up()
        turtle.goto((self.__x-dx)*skala,(self.__y-dy)*skala)
        turtle.dot()
        if nazwa != 0:
            turtle.write(str(self.__x)+", "+str(self.__y))

def kwadrat(x1,y1,x2,y2):
    turtle.up()
    turtle.goto(x1,y1)
    turtle.down()
    turtle.goto(x2,y1)
    turtle.goto(x2,y2)
    turtle.goto(x1,y2)
    turtle.goto(x1,y1)
    turtle.up()
    return 0

turtle.up()
plik = open("C:\Users\user\Downloads\punkty.txt","r")

xmin = 1000000.0
xmax = -10000000.0
ymin = 1000000.0
ymax = -1000000.0
punkty = []
for i in plik:
    wiersz = i.split()
    punkty.append(punkt(float(wiersz[0]),float(wiersz[1])))
    x = float(wiersz[0])
    y = float(wiersz[1])
    if x<xmin:
        xmin = x
    if x>xmax:
        xmax = x
    if y<ymin:
        ymin = y
    if y>ymax:
        ymax = y
w = ymax-ymin
sz = xmax-xmin

px = (xmin+xmax)/2
py = (ymin+ymax)/2

turtle.up()
turtle.goto((xmin-px)*100,(ymin-py)*100)
turtle.down()
turtle.goto((xmin-px)*100,(ymin+w-py)*100)
turtle.goto((xmax-px)*100,(ymax-py)*100)
turtle.goto((xmax-px)*100,(ymax-w-py)*100)
turtle.goto((xmin-px)*100,(ymin-py)*100)

xsr = (xmin+xmax)/2
ysr = (ymin+ymin)/2

if w>sz:
    a = (w-sz)/2
    kwadrat((xmax-px)*100,(ymax-py+a)*100,(xmin-px)*100,(ymin-py-a)*100)
    kwadrat(x

elif w<sz:
    a = (sz-w)/2
    kwadrat((xmax-px+a)*100,(ymax-py)*100,(xmin-px-a)*100,(ymin-py)*100)
    
else:
    kwadrat(xmax,ymax,xmin,ymin)

for i in punkty:
    i.draw(100,px,py,0)




plik.close()
turtle.done()