ARSTD::Vector4 Class Reference

List of all members.

Public Member Functions
	Vector4 ()
	Vector4 (const double &x, const double &y, const double &z, const double &w)
double	getLength () const
double	getSquaredLength () const
const Vector4 &	normalize ()
Vector4	getNormalized () const
Public Attributes
double	x
	The first component.
double	y
	The second component.
double	z
	The third component.
double	w
	The fourth component.
double	r
	Alias of first component.
double	g
	Alias of second component.
double	b
	Alias of third component.
double	a
	Alias of fourth component.

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Detailed Description

This class implements a 4-dimensional vector.

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Constructor & Destructor Documentation

ARSTD::Vector4::Vector4

(

)

Default constructor. Sets all members to zero

ARSTD::Vector4::Vector4	(	const double &	x,
		const double &	y,
		const double &	z,
		const double &	w
	)

Constructor, that initializes the members with the parameters.

Parameters:

	x	x-component
	y	y-component
	z	z-component
	w	w-component

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Member Function Documentation

double ARSTD::Vector4::getLength

(

)

const

Returns the length of the vector.

Returns:

length of the vector

double ARSTD::Vector4::getSquaredLength

(

)

const

Returns the squared length of the vector. Because the calculation of the length of a vector needs a squareroot operation this method can be used to calc with squared values.

Returns:

Squared length of the vector.

const Vector4& ARSTD::Vector4::normalize

(

)

Normalizes the vector to a length of 1.

Precondition:

this->length != 0.0

Postcondition:

this->length() is 1

Returns:

The normalized vector

Vector4 ARSTD::Vector4::getNormalized

(

)

const

Returns the normalized version of this vector.

Precondition:

this->length != 0.0

Postcondition:

this->length() is 1

Returns:

The normalized vector

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