2 files changed, 183 insertions, 0 deletions
diff --git a/python-classes/main.py b/python-classes/main.py
new file mode 100644
index 0000000..06cc970
--- /dev/null
+++ b/python-classes/main.py
@@ -0,0 +1,180 @@
+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()
+
diff --git a/python-classes/task.txt b/python-classes/task.txt
new file mode 100644
index 0000000..b1a8b8f
--- /dev/null
+++ b/python-classes/task.txt
@@ -0,0 +1,3 @@
+Создать базовый класс «Фигура» и несколько производных от него классов:
+«Точка», «Квадрат», «Круг» и т.д. Ввести функции подсчета площади и периметра
+геометрических фигур. Нарисовать соответствующие фигуры.