Class Shape and issue related to reflcet and translate point

[Rajpal]

Hello
I was asked to write an abstract shape class with pure virtual functions and then implement derived class ie rectangle, circle and square . But I am also asked to translate and reflect point and my point class should be in Shape class.
I am able to implement Shape class , and point class and derived clases but I dont know how should I implement Point center in my Shape class and in derive class and how to implement translate and reflect functions. (Euclidean space) Please help me .

Looking for forward for positive response.
Thankyou

[Rajpal]

This is the output I am supposed to get but I am getting errors, please help me
int main()
{
int size = 5;

Shape** shapes = new Shape*[size];

Point* centre = new Point(5,5);
Rectangle* rectangle1 = new Rectangle(*centre, 4, 3);
shapes[0] = rectangle1;

shapes[1] = new Rectangle (*new Point(10, -10), 4, 4);

Rectangle* rectangle3 = new Square(*new Point(-8.5,-10), 2.5);
shapes[2] = rectangle3;

Square* square2 = new Square (*new Point(-1,-1), 1.5);
shapes[3] = square2;

Circle* circle = new Circle(*new Point(100,100), 25.4);
shapes[4] = circle;

cout << "\n11111111111111111111111111\n";

for (int i = 0; i < size; ++i)
shapes[i] -> display();

cout << "\n22222222222222222222222222\n";

cout << "\nthe area of the first rectangle is: ";
cout << rectangle1->area() << endl;

cout << "It is a square, the area is: ";
Square* square = dynamic_cast<Square*> (rectangle3);
cout << square->area() << endl;

cout << "the perimeter of the circle is: ";
cout << circle->perimeter() << endl;

cout << "\n33333333333333333333333333\n";

cout << "\nThe four vertices of the first rectangle are: (clockwise from top-left)\n";
rectangle1->printFourVertices();

cout << "\nThe four vertices of the third rectangle are:\n";
rectangle3->printFourVertices();

cout << "\n44444444444444444444444444\n";

rectangle1->reflectX();

shapes[2] -> translate(1.5, 3);

shapes[4] -> translate(-100,-100);

cout << "\nAfter reflection and translation, here are the moved shapes:\n" ;
for (int i = 0; i < size; ++i)
shapes[i] -> display();

cout << "\n55555555555555555555555555\n";

cout << "\nNow, the four vertices of the first rectangle are:\n";
rectangle1->printFourVertices();

cout << "\nNow, the four vertices of the third rectangle are:\n";
rectangle3->printFourVertices();

cout << "\n66666666666666666666666666\n\n";

for (int i = 0; i < size; ++i)
cout << shapes[i] -> area() << endl;

// From the following statements, understand how setLength() and setWidth()
// work for rectangles and squares.

cout << "\n777777777777777777777777777\n";

shapes[1] -> display();
dynamic_cast<Rectangle*> (shapes[1]) -> setLength(8.2);
cout << "\nAfter setLength(8.2), the rectangle is: ";
shapes[1] -> display();
dynamic_cast<Rectangle*> (shapes[1]) -> setWidth(5);
cout << "\nAfter setWidth(5), the rectangle is: ";
shapes[1] -> display();

square2 -> display();
square2 -> setLength(8.2);
cout << "\nAfter setLength(8.2), the rectangle is: ";
square2 -> display();
square2 -> setWidth(5);
cout << "\nAfter setWidth(5), the rectangle is: ";
square2 -> display();

system("pause");
return 0;
}


/*
11111111111111111111111111

Rectangle:
Centre: (5, 5)
Length: 4
Width: 3

Rectangle:
Centre: (10, -10)
Length: 4
Width: 4

Square:
Centre: (-8.5, -10)
Side Length: 2.5

Square:
Centre: (-1, -1)
Side Length: 1.5

Circle:
Centre: (100, 100)
Radius: 25.4

22222222222222222222222222

the area of the first rectangle is: 12
It is a square, the area is: 6.25
the perimeter of the circle is: 159.512

33333333333333333333333333

The four vertices of the first rectangle are: (clockwise from top-left)
(3, 6.5)
(7, 6.5)
(7, 3.5)
(3, 3.5)

The four vertices of the third rectangle are:
(-9.75, -8.75)
(-7.25, -8.75)
(-7.25, -11.25)
(-9.75, -11.25)

44444444444444444444444444

After reflection and translation, here are the moved shapes:

Rectangle:
Centre: (5, -5)
Length: 4
Width: 3

Rectangle:
Centre: (10, -10)
Length: 4
Width: 4

Square:
Centre: (-7, -7)
Side Length: 2.5

Square:
Centre: (-1, -1)
Side Length: 1.5

Circle:
Centre: (0, 0)
Radius: 25.4

55555555555555555555555555

Now, the four vertices of the first rectangle are:
(3, -3.5)
(7, -3.5)
(7, -6.5)
(3, -6.5)

Now, the four vertices of the third rectangle are:
(-8.25, -5.75)
(-5.75, -5.75)
(-5.75, -8.25)
(-8.25, -8.25)

66666666666666666666666666

12
16
6.25
2.25
2025.8

777777777777777777777777777

Rectangle:
Centre: (10, -10)
Length: 4
Width: 4

After setLength(8.2), the rectangle is:
Rectangle:
Centre: (10, -10)
Length: 8.2
Width: 4

After setWidth(5), the rectangle is:
Rectangle:
Centre: (10, -10)
Length: 8.2
Width: 5

Square:
Centre: (-1, -1)
Side Length: 1.5

After setLength(8.2), the rectangle is:
Square:
Centre: (-1, -1)
Side Length: 8.2

After setWidth(5), the rectangle is:
Square:
Centre: (-1, -1)
Side Length: 5
*/

[Enoizat]

Duplicate post:
http://www.cplusplus.com/forum/beginner/219235/

[dhayden]

Please post responses in the other thread.