Thread: Project help needed

I try to make a good OOP (obj oriented prog) project.
my program is an MFC program but I want to talk about the code itself

Well, the Idea is to take as base class "Shape"
"Shape" has some pure virtual functions.
now I have a problem, I dont no how to set the hierarchy ..
Shape is the abstract class
now every Shape is made with Points.
Point
Line (2 Points)
Circle ( 1 Point + radius)
Triangle (3 Points or 3 Lines ??)
Quad ( 4 Points or 4 Lines ?? + Quad has its own VIRTUAL functions)
Square ( inherites from Quad)

and so on...
now I also use operator overloading, so it become difficult to use the Virtual function (like draw()) ...

Im so confuse, here is what I made so far, I know its a mess but I will be great to get some Tips from you to make it smooth!

Code:

#ifndef POINT_H
#define POINT_H
#include <iostream>
using namespace std;


class Point {
	
public:
	int x, y;
	Point() {
		x = 0;
		y = 0;
	}
	Point(int a,int b) {
		x = a;
		y = b;
	}
};


#endif POINT_H

Code:

#ifndef CIRCLE_H
#define CIRCLE_H
#include "Shape.h"
#include "Point.h"
#include <iostream>


using namespace std;


double const PI = 3.1412;
class Circle : public Shape {
private:
	Point p1;
	int radius;
public:
	Circle(Point p, int r) {
		p1.x = p.x;
		p1.y = p.y;
		radius = r;
	}
	~Circle();
	void setX(int xcor) { p1.x = xcor; }
	void setY(int ycor) { p1.y = ycor; }
	int getX() const { return p1.x; }
	int getY() const { return p1.y; }
	int getR() const { return radius; }
	virtual double area() const{	return PI * radius * radius; }
	virtual double perimeter() const { return PI * 2 * radius; }
	virtual void draw() const {
		cout << "Circle: center(" << getX() << "," << getY() << 
			") with Radius(" << getR() << ")" << endl;
	}
};


#endif CIRCLE_H

Code:

#ifndef SHAPE_H
#define SHAPE_H


using namespace std;


class Shape {
public: 
	virtual double area() const = 0;
	virtual double perimeter() const = 0;
	virtual void draw() const = 0;
};


#endif SHAPE_H

Code:

#ifndef LINE_H
#define LINE_H
#include "Shape.h"
#include "Point.h"
#include <iostream>
#include <math.h>


using namespace std;


class Line : public Shape {
protected:
	Point X;
	Point Y;
public:
	Line(Point p1, Point p2) 
		{
		X.x = p1.x;
		X.y = p1.y;
		Y.x = p2.x;
		Y.y = p2.y;
	}
	Point getX() const { return X; };
	Point getY() const { return Y; };
	void setX(Point newX) { X.x = newX.x; X.y = newX.y; }
	void setY(Point newY) { Y.x = newY.x; Y.y = newY.y; }
	virtual double area() const { return 0.0; }
	virtual void draw() const {
		cout << "Line: (" << getX().x << "," << getX().y << ") to (" << getY().x << "," << getY().y << ")" << endl;
	}
	virtual double perimeter() const { return sqrt((Y.x - X.x) + (Y.y - X.y)); }
};


#endif LINE_H

Im so confuse, here is what I made so far, I know its a mess but I will be great to get some Tips from you to make it smooth!

What are you confused about?

well I dont know if what Im doing is ok ...
here when I try to make Quads...

Code:

#ifndef QUAD_H
#define QUAD_H
#include "Line.h"
#include <iostream>


using namespace std;


class Quad : public Line {
protected:
	Line l1, l2, l3, l4;
public:
	Quad(Line a, Line b, Line c, Line d) {
		l1 = a;
		l2 = b;
		l3 = c;
		l4 = d;
	}
	~Quad();
	virtual void setl1(Line newl) { l1 = newl; }
	virtual void setl2(Line newl) { l2 = newl; }
	virtual void setl3(Line newl) { l3 = newl; }
	virtual void setl4(Line newl) { l4 = newl; }
	virtual Line getl1() const { return l1; }
	virtual Line getl2() const { return l2; }
	virtual Line getl3() const { return l3; }
	virtual Line getl4() const { return l4; }
	virtual double area() const = 0;
	virtual double perimeter() = 0;
	virtual void draw() const {
		cout << "QUAD" << endl;
	}
	friend ostream& operator<<(ostream &os, const Quad &obj) {
		os << obj.getl1() << "," << obj.getl2() << ","
			<< obj.getl3() << "," << obj.getl4() << endl;
		return os;
	}
};


#endif QUAD_H

I dont know If my setteres and getters are ok, if I build this class ok, its all seem so confusing