Shape Class Reference

#include <shape.h>

Inheritance diagram for Shape:

List of all members.

Public Member Functions
	Shape (int x, int y)
	Shape (Point c)
Point	getCenter () const
void	setCenter (Point c)
virtual std::string	getType () const =0
virtual double	getArea () const =0
Protected Attributes
Point	center

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Detailed Description

An abstract base class that represents a shape on a 2D plane. Its only member is "center" which maintains the center point of the shape. It has pure virtual methods for identifying the type of shape and calculating the shape's area that must be implemented by subclasses.

Author:

Brent Nash

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Constructor & Destructor Documentation

Shape::Shape	(	int	x,
		int	y
	)

Overloaded constructor that takes in an (x,y) coordinate.

Parameters:

	x	The X coordinate of the shape's center point in 2D space
	y	The Y coordinate of the shape's center point in 2D space

Shape::Shape

(

Point

c

)

Overloaded constructor that takes in a center Point.

Parameters:

c

The center point of the shape in 2D space

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Member Function Documentation

virtual double Shape::getArea

(

)

const [pure virtual]

Pure virtual function for Shape subclasses. Subclasses overriding this method should use it to calculate the area of the shape and return the area as a floating point number.

Precondition:

Valid data must be set on the Shape object

Postcondition:

Does not change the object

Returns:

A floating point number representing the area of the Shape

Implemented in Circle, Rectangle, and Triangle.

Point Shape::getCenter

(

)

const

Accessor for the shape's center point.

Precondition:

None

Postcondition:

Does not change the object

Returns:

The current center point of the shape as a Point object.

virtual std::string Shape::getType

(

)

const [pure virtual]

Pure virtual function for Shape subclasses. Returns a string indicating what type of shape this object is.

Precondition:

None

Postcondition:

Does not change the object

Returns:

A string name of the current shape

Implemented in Circle, Rectangle, and Triangle.

void Shape::setCenter

(

Point

c

)

Mutator for the shape's center point.

Precondition:

None

Postcondition:

The "center" member variable of Shape will be changed to the input value.

Parameters:

c

The new center point for the Shape.

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Member Data Documentation

Point Shape::center [protected]

The center point of the shape as a 2D coordinate

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The documentation for this class was generated from the following files:

• shape.h
• shape.cpp