Лабораторные работы С++ (для ИВТ) / Готовые лабы С++ / Лаба5 / Laba 5 (7)

#include <iostream>
#include <locale>
#include <vector>
using namespace std;

class Point {
protected:
    double x, y;
public:
    Point(double x_val = 0, double y_val = 0) : x(x_val), y(y_val) {}
    virtual void draw() const {
        cout << "(" << x << ", " << y << ")";
    }
    virtual void move(double dx, double dy) {
        x += dx;
        y += dy;
    }
    virtual ~Point() {}
};

class Segment : public Point {
protected:
    Point endPoint;
public:
    Segment(double x1 = 0, double y1 = 0, double x2 = 1, double y2 = 1) 
        : Point(x1, y1), endPoint(x2, y2) {}
    
    void draw() const override {
        cout << "Отрезок "; Point::draw(); 
        cout << " - "; endPoint.draw(); cout << endl;
    }
    
    void move(double dx, double dy) override {
        Point::move(dx, dy);
        endPoint.move(dx, dy);
    }
};

class Quadrilateral : public Segment {
protected:
    Point point3, point4;
public:
    Quadrilateral(double x1, double y1, double x2, double y2, 
                  double x3, double y3, double x4, double y4)
        : Segment(x1, y1, x2, y2), point3(x3, y3), point4(x4, y4) {}
    
    void draw() const override {
        cout << "Четырёхугольник: "; Point::draw(); cout << ", ";
        endPoint.draw(); cout << ", "; point3.draw(); cout << ", "; 
        point4.draw(); cout << endl;
    }
    
    void move(double dx, double dy) override {
        Segment::move(dx, dy);
        point3.move(dx, dy);
        point4.move(dx, dy);
    }
    
    void fill() const {
        cout << "Закрашиваем четырёхугольник" << endl;
    }
};

class Trapezoid : public Quadrilateral {
public:
    Trapezoid(double x1, double y1, double x2, double y2, 
              double x3, double y3, double x4, double y4)
        : Quadrilateral(x1, y1, x2, y2, x3, y3, x4, y4) {}
    
    void draw() const override {
        cout << "Трапеция: "; Point::draw(); cout << ", ";
        endPoint.draw(); cout << ", "; point3.draw(); cout << ", "; 
        point4.draw(); cout << endl;
    }
    
    bool isIsosceles() const {
        // Проверка на равнобедренность (упрощённо)
        return true;
    }
};

int main() {
    setlocale(LC_ALL, "ru_RU.UTF-8");
    
    Point point(0, 0);
    Segment segment(0, 0, 5, 0);
    Quadrilateral quad(0, 0, 5, 0, 5, 3, 0, 3);
    Trapezoid trap(0, 0, 6, 0, 4, 3, 2, 3);
    
    point.draw();
    segment.draw();
    quad.draw();
    trap.draw();
    
    quad.fill();
    cout << "Трапеция равнобедренная: " << trap.isIsosceles() << endl;
    
    return 0;
}