如何找到定義了兩個點的矩形的面積和周長？

Question

我設置了一個 Point 類和 Rectangle 類，這是它的代碼：

import math

class Point:
    """A point in two-dimensional space."""

    def __init__(self, x: float = 0.0, y: float = 0.0)->None:               
        self.x = x
        self.y = y    


    def moveIt(self, dx: float, dy: float)-> None:
        self.x = self.x + dx
        self.y = self.y + dy    

    def distance(self, otherPoint: float): 
        if isinstance(otherPoint, Point):
            x1 = self.x
            y1 = self.y
            x2 = otherPoint.x
            y2 = otherPoint.y

            return ( (x1 - x2)**2 + (y1 - y2)**2 )**0.5    


class Rectangle:
    def __init__(self, topLeft = Point(0,0), bottomRight = Point(1,1)):
        self.topLeft = topLeft
        self.bottomRight = bottomRight

兩點是矩形的左上角和右下角。 我怎么能從兩點找到這個矩形的面積和周長？ 將不勝感激任何和所有的幫助！

Answer 1

我們可以訪問每個點的 x 和 y 值並計算高度和寬度，從那里我們可以創建計算面積和周長的方法

class Rectangle():
    def __init__(self, topLeft = Point(0,0), bottomRight = Point(1,1)):
        self.topLeft = topLeft
        self.bottomRight = bottomRight
        self.height = topLeft.y - bottomRight.y
        self.width = bottomRight.x - topLeft.x
        self.perimeter = (self.height + self.width) * 2
        self.area = self.height * self.width

rect = Rectangle(Point(3,10),Point(4,8))
print(rect.height)
print(rect.width)
print(rect.perimeter)
print(rect.area)

 chrx@chrx:~/python/stackoverflow/9.24$ python3.7 rect.py 2 1 6 2

或者使用方法

class Rectangle():
    def __init__(self, topLeft = Point(0,0), bottomRight = Point(1,1)):
        self.topLeft = topLeft
        self.bottomRight = bottomRight
        self.height = topLeft.y - bottomRight.y
        self.width = bottomRight.x - topLeft.x

    def make_perimeter(self):
        self.perimeter = (self.height + self.width) * 2
        return self.perimeter

    def make_area(self):
        self.area = self.height * self.width
        return self.area

rect = Rectangle(Point(3,10),Point(4,8))
print(rect.height)
print(rect.width)
print(rect.make_perimeter())
print(rect.make_area())