Triangle Class Reference

A subclass of a Shape that represents a triangle in 2D space. More...

#include <triangle.h>

Inheritance diagram for Triangle:

Collaboration diagram for Triangle:

Public Member Functions
	Triangle (const cs225::HSLAPixel &color, const Vector2 &vertex1, const Vector2 &vertex2, const Vector2 &vertex3)
	Constructs a new Triangle out of the 3 give Vector2s. More...
	Triangle (const Triangle &other)
	~Triangle ()
Triangle &	operator= (const Triangle &rhs)
int	area () const
	Computes and returns the area of the Triangle. More...
int	perimeter () const
	Computes and returns the perimeter of the Triangle. More...
bool	contains (const Vector2 &p) const
	Checks to see if the Vector2 p is contained inside of the Triangle. More...
void	draw (cs225::PNG *canvas) const
	Draws the Triangle to the canvas. More...
void	set_center (const Vector2 &center)
	Overridden set_center method that sets the center Vector2 of the Triangle. More...
Vector2	vertex (int i) const
	Gets one of the Triangle's vertices. More...
void	set_vertex (int i, const Vector2 &value)
	Sets one of the Triangle's vertices. More...
Public Member Functions inherited from Shape
	Shape ()
	Constructs a new Shape with a default color and center. More...
	Shape (const Vector2 &center, const cs225::HSLAPixel &color)
	Constructs a new Shape with the given center and color. More...
	~Shape ()
int	area () const
	Computes and returns the area of the Shape in pixels. More...
int	perimeter () const
	Computes and returns the perimeter of the Shape in pixels. More...
bool	contains (const Vector2 &p) const
	Checks to see if the Vector2 p is contained inside of the Shape. More...
Vector2	center () const
	Gets the center Vector2 of the Shape. More...
cs225::HSLAPixel	color () const
	Gets the color of the Shape. More...
Public Member Functions inherited from Drawable
	~Drawable ()

Private Attributes
Vector2 **	vertices_

Additional Inherited Members
Protected Attributes inherited from Shape
Vector2	center_

Detailed Description

A subclass of a Shape that represents a triangle in 2D space.

Constructor & Destructor Documentation

Triangle() [1/2]

Triangle::Triangle	(	const cs225::HSLAPixel &	color,
		const Vector2 &	vertex1,
		const Vector2 &	vertex2,
		const Vector2 &	vertex3
	)

Constructs a new Triangle out of the 3 give Vector2s.

Parameters

color	of the new Triangle
vertex1	first Vector2 of the Triangle
vertex2	second Vector2 of the Triangle
vertex3	third Vector2 of the Triangle

Triangle() [2/2]

Triangle::Triangle

(

const Triangle &

other

)

~Triangle()

Triangle::~Triangle

(

)

Member Function Documentation

area()

int Triangle::area

(

)

const

Computes and returns the area of the Triangle.

Returns

the area of the Triangle in pixels

contains()

bool Triangle::contains

(

const Vector2 &

p

)

const

Checks to see if the Vector2 p is contained inside of the Triangle.

Parameters

p

Vector2

Returns

true if the Vector2 p is inside of the Triangle

draw()

void Triangle::draw ( cs225::PNG *  canvas ) const

virtual

Draws the Triangle to the canvas.

Parameters

canvas

PNG to draw onto

Reimplemented from Shape.

operator=()

Triangle & Triangle::operator=

(

const Triangle &

rhs

)

perimeter()

int Triangle::perimeter

(

)

const

Computes and returns the perimeter of the Triangle.

Returns

the perimeter of the Triangle in pixels

set_center()

void Triangle::set_center ( const Vector2 &  center )

virtual

Overridden set_center method that sets the center Vector2 of the Triangle.

Parameters

center

the new center Vector2

Reimplemented from Shape.

set_vertex()

void Triangle::set_vertex	(	int	i,
		const Vector2 &	value
	)

Sets one of the Triangle's vertices.

Crashes if an invalid vertex index is given (i.e. i < 0 or i > 2)

Parameters

i	the vertex to change
value	the new vertex

vertex()

Vector2 Triangle::vertex

(

int

i

)

const

Gets one of the Triangle's vertices.

Crashes if an invalid vertex index is given (i.e. i < 0 or i > 2)

Parameters

i	Vertex to get. Either 0, 1, or 2

Returns

The Triangle's i'th vertex

Member Data Documentation

vertices_

Vector2** Triangle::vertices_

private

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

• triangle.h
• triangle.cpp