Vector4 Struct Reference

Vector4 is a 4D vector class used in graphics, math, and color representations. It supports arithmetic, normalization, dot/cross products, and interpolation. More...

#include <Vector4.h>

Public Member Functions
	Vector4 ()
	Default constructor. Initializes components to zero.
	Vector4 (float x, float y, float z, float w)
	Constructor with individual components.
	Vector4 (Vector3 vec3, float w=0)
	Constructs a Vector4 from a Vector3 and a w component.
float	Magnitude () const
	Computes the magnitude (length) of the vector.
float	MagnitudeSqr () const
	Computes the squared magnitude of the vector.
void	Normalize ()
	Normalizes the vector to unit length.
std::string	ToString () const
	Converts the vector to a readable string format.
const float *	GetAsFloatPtr () const
	Gets a float pointer to the vector's data.
float &	operator[] (int i)
	Accesses a component by index (0 = x, 1 = y, 2 = z, 3 = w).
Vector4 &	operator*= (float scalar)
Vector4 &	operator+= (const Vector4 &right)
Vector4 &	operator-= (const Vector4 &right)

Static Public Member Functions
static Vector4	Normalize (const Vector4 &vec)
	Returns a normalized copy of the input vector.
static float	Dot (const Vector4 &a, const Vector4 &b)
	Computes the dot product between two vectors.
static Vector4	Cross (const Vector4 &a, const Vector4 &b)
	Computes the 3D cross product of two vectors (ignores w).
static Vector4	Lerp (const Vector4 &a, const Vector4 &b, float f)
	Linearly interpolates between two vectors.
static Vector4	Reflect (const Vector4 &v, const Vector4 &n)
	Reflects a vector across a normal vector.

Public Attributes
float	x = 0
float	y = 0
float	z = 0
float	w = 0

Static Public Attributes
static const Vector4	ZERO
static const Vector4	ONE

Friends
class	Matrix4
Vector4	operator+ (const Vector4 &a, const Vector4 &b)
Vector4	operator- (const Vector4 &a, const Vector4 &b)
Vector4	operator* (const Vector4 &left, const Vector4 &right)
Vector4	operator* (const Vector4 &vec, float scalar)
Vector4	operator* (float scalar, const Vector4 &vec)

Detailed Description

Vector4 is a 4D vector class used in graphics, math, and color representations. It supports arithmetic, normalization, dot/cross products, and interpolation.

Constructor & Destructor Documentation

Vector4() [1/3]

Vector4::Vector4

(

)

Default constructor. Initializes components to zero.

Vector4() [2/3]

Vector4::Vector4	(	float	x,
		float	y,
		float	z,
		float	w )

Constructor with individual components.

Parameters

x	X component.
y	Y component.
z	Z component.
w	W component.

Vector4() [3/3]

Vector4::Vector4	(	Vector3	vec3,
		float	w = 0 )

Constructs a Vector4 from a Vector3 and a w component.

Parameters

vec3	The 3D vector to use for x, y, z.
w	The w component (default: 0.0f).

Member Function Documentation

Cross()

Vector4 Vector4::Cross ( const Vector4 & a, const Vector4 & b )

static

Computes the 3D cross product of two vectors (ignores w).

Parameters

a	First vector.
b	Second vector.

Returns

Resulting vector from cross product (w = 0).

Dot()

float Vector4::Dot ( const Vector4 & a, const Vector4 & b )

static

Computes the dot product between two vectors.

Parameters

a	First vector.
b	Second vector.

Returns

Dot product result.

GetAsFloatPtr()

const float * Vector4::GetAsFloatPtr

(

)

const

Gets a float pointer to the vector's data.

Returns

Pointer to the first component (x).

Lerp()

Vector4 Vector4::Lerp ( const Vector4 & a, const Vector4 & b, float f )

static

Linearly interpolates between two vectors.

Parameters

a	Start vector.
b	End vector.
f	Interpolation factor (0.0 to 1.0).

Returns

Interpolated vector.

Magnitude()

float Vector4::Magnitude

(

)

const

Computes the magnitude (length) of the vector.

Returns

Magnitude of the vector.

MagnitudeSqr()

float Vector4::MagnitudeSqr

(

)

const

Computes the squared magnitude of the vector.

Returns

Squared magnitude.

Normalize() [1/2]

void Vector4::Normalize

(

)

Normalizes the vector to unit length.

Normalize() [2/2]

Vector4 Vector4::Normalize ( const Vector4 & vec )

static

Returns a normalized copy of the input vector.

Parameters

vec	Vector to normalize.

Returns

Normalized vector.

operator*=()

Vector4 & Vector4::operator*=

(

float

scalar

)

operator+=()

Vector4 & Vector4::operator+=

(

const Vector4 &

right

)

operator-=()

Vector4 & Vector4::operator-=

(

const Vector4 &

right

)

operator[]()

float & Vector4::operator[]

(

int

i

)

Accesses a component by index (0 = x, 1 = y, 2 = z, 3 = w).

Parameters

i	Index of the component.

Returns

Reference to the component.

Reflect()

Vector4 Vector4::Reflect ( const Vector4 & v, const Vector4 & n )

static

Reflects a vector across a normal vector.

Parameters

v	Incoming vector.
n	Normal vector (should be normalized).

Returns

Reflected vector.

ToString()

std::string Vector4::ToString

(

)

const

Converts the vector to a readable string format.

Returns

String in format (x , y , z , w).

Friends And Related Symbol Documentation

Matrix4

friend class Matrix4

friend

operator* [1/3]

Vector4 operator* ( const Vector4 & left, const Vector4 & right )

friend

operator* [2/3]

Vector4 operator* ( const Vector4 & vec, float scalar )

friend

operator* [3/3]

Vector4 operator* ( float scalar, const Vector4 & vec )

friend

operator+

Vector4 operator+ ( const Vector4 & a, const Vector4 & b )

friend

operator-

Vector4 operator- ( const Vector4 & a, const Vector4 & b )

friend

Member Data Documentation

ONE

const Vector4 Vector4::ONE

static

w

float Vector4::w = 0

x

float Vector4::x = 0

y

float Vector4::y = 0

z

float Vector4::z = 0

ZERO

const Vector4 Vector4::ZERO

static

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

• Engine/GameTool/Utility/Vector/Vector4.h
• Engine/GameTool/Utility/Vector/Vector4.cpp