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import math
import time
from pygame.locals import *
import pygame
class Colors:
BLACK = Color("black")
RED = Color("red")
GREEN = Color("green")
BLUE = Color("blue")
YELLOW = Color("yellow")
CYAN = Color("cyan")
class Shape:
def perimeter(self):
raise NotImplementedError()
def area(self):
raise NotImplementedError()
class Showable:
def draw(self, surface):
raise NotImplementedError()
def show(self):
pygame.init()
self.w, self.h = size = 200, 200
screen = pygame.display.set_mode(size)
running = True
while running:
screen.fill(Colors.BLACK)
self.draw(screen)
pygame.display.flip()
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
running = False
elif event.type == KEYDOWN:
if event.key in [K_ESCAPE, K_q]:
pygame.quit()
running = False
class Point(Shape, Showable):
def perimeter(self):
return 0
def area(self):
return 0
def draw(self, surface):
center = (self.w // 2, self.h // 2)
pygame.draw.circle(surface, Colors.GREEN, center, radius=2)
class Circle(Shape, Showable):
def __init__(self, radius):
self.r = radius
def perimeter(self):
return 2 * math.pi * self.r
def area(self):
return math.pi * self.r * self.r
def draw(self, surface):
center = (self.w // 2, self.h // 2)
pygame.draw.circle(surface, Colors.RED, center, radius=self.r)
class Square(Shape, Showable):
def __init__(self, side):
self.side = side
def perimeter(self):
return self.side * 4
def area(self):
return self.side * self.side
def draw(self, surface):
center_x = self.w // 2
center_y = self.h // 2
left_top = (center_x - self.side // 2, center_y - self.side // 2)
size = (self.side, self.side)
pygame.draw.rect(surface, Colors.BLUE, Rect(left_top, size))
class Rectangle(Shape, Showable):
def __init__(self, a, b):
self.a = a
self.b = b
def perimeter(self):
return (self.a + self.b) * 2
def area(self):
return self.a * self.b
def draw(self, surface):
center_x = self.w // 2
center_y = self.h // 2
left_top = (center_x - self.a // 2, center_y - self.b // 2)
size = (self.a, self.b)
pygame.draw.rect(surface, Colors.CYAN, Rect(left_top, size))
class EquilateralPolygon(Shape, Showable):
def __init__(self, sides, radius):
self.n = sides
self.r = radius
def perimeter(self):
a = 2 * self.r * math.sin(math.pi / self.n)
return a * self.n
def area(self):
return self.n / 2 * self.r * self.r * math.sin(2 * math.pi / self.n)
def draw(self, surface):
points = []
xc = self.w // 2
yc = self.h // 2
for i in range(self.n):
points.append((
xc + self.r * math.cos(2 * math.pi * i / self.n),
yc + self.r * math.sin(2 * math.pi * i / self.n)
))
pygame.draw.polygon(surface, Colors.YELLOW, points)
def main():
print("===== Point =====")
p = Point()
print(p.perimeter())
print(p.area())
p.show()
print("===== Circle =====")
c = Circle(40)
print(c.perimeter())
print(c.area())
c.show()
print("===== Square =====")
sq = Square(120)
print(sq.perimeter())
print(sq.area())
sq.show()
print("===== Rectangle =====")
r = Rectangle(120, 60)
print(r.perimeter())
print(r.area())
r.show()
print("===== EquilateralPolygon =====")
poly = EquilateralPolygon(10, 60)
print(poly.perimeter())
print(poly.area())
poly.show()
if __name__ == "__main__":
main()
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