Polygon Class Reference

Contains the description of a polygon, now with mutable. The traverse is stored. More...

#include <polygon.h>

Public Member Functions
	Polygon (int n)
	Constructs a regular polygon with vertices on the unit circle. More...
void	append (const Point2D &a)
	Adds a vertex to the end of the polygon traverse. More...
int	number () const
	Number of vertices in polygon. More...
float	perimeter () const
	Computes the perimeter of the closed polygon. More...
bool	operator< (const Polygon &rhs) const
	Less operator regarding the perimeter. More...

Detailed Description

Contains the description of a polygon, now with mutable. The traverse is stored.

Definition at line 76 of file polygon.h.

Constructor & Destructor Documentation

Polygon()

Polygon::Polygon

(

int

n

)

Constructs a regular polygon with vertices on the unit circle.

Parameters

[in]

n

number of vertices in the polygon

Warning

We use a mutable member _peri which should be defined -1 whenever the class instance has been changed.

Definition at line 42 of file polygon.cpp.

Member Function Documentation

append()

void Polygon::append ( const Point2D &  a )

inline

Adds a vertex to the end of the polygon traverse.

Parameters

[in]

a

2d point to add.

Definition at line 90 of file polygon.h.

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number()

int Polygon::number ( ) const

inline

Number of vertices in polygon.

Returns

Number of vertices of the open polygon

Definition at line 96 of file polygon.h.

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operator<()

bool Polygon::operator< ( const Polygon &  rhs ) const

inline

Less operator regarding the perimeter.

Parameters

[in]

rhs

second polygon.

Returns

True iff perimeter of recent instance is less than the perimeter of the second instance.

Definition at line 110 of file polygon.h.

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perimeter()

float Polygon::perimeter

(

)

const

Computes the perimeter of the closed polygon.

Returns

Perimeter of the closed polygon

Warning

Uses a mutable variable

Definition at line 53 of file polygon.cpp.

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

• polygon.h
• polygon.cpp