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# vec4 Struct (C++)

Vector of 4 float components.

To use this structure, include the UnigineMathLib.h file.

## UNIGINE_DECLARE_USE_MEMORY UNIGINE_INLINEvec4 ()

Default constructor that produces a zero vector.

## UNIGINE_INLINEvec4 (const vec4 & v)

Initialization by a vector.

### Arguments

• const vec4 & v - The value of the vector.

## UNIGINE_INLINEvec4 (const vec2 & v, float z, float w)

Initialization by a vector and two scalars.

### Arguments

• const vec2 & v - The value of the vector.
• float z - Z component of the vector.
• float w - W component of the vector.

## UNIGINE_INLINEvec4 (const vec3 & v, float w)

Initialization by a vector and a scalar.

### Arguments

• const vec3 & v - The value of the vector.
• float w - W component of the vector.

## UNIGINE_INLINEvec4 (float x, float y, float z, float w)

Initialization by scalars.

### Arguments

• float x - X component of the vector.
• float y - Y component of the vector.
• float z - Z component of the vector.
• float w - W component of the vector.

## explicit UNIGINE_INLINEvec4 (float v)

Initialization by a scalar.

### Arguments

• float v - The value of the scalar.

## explicit UNIGINE_INLINEvec4 (const vec2 & v)

Initialization by a two component vector: x=v.x, y=v.y, z=0.0f, w=1.0f.

### Arguments

• const vec2 & v - The value of the vector.

## explicit UNIGINE_INLINEvec4 (const vec3 & v)

Initialization by a three component vector: x=v.x, y=v.y, z=v.z, w=1.0f.

### Arguments

• const vec3 & v - The value of the vector.

## explicit UNIGINE_INLINEvec4 (const dvec4 & v)

Initialization by a vector of double components.

### Arguments

• const dvec4 & v - The value of the vector.

## explicit UNIGINE_INLINEvec4 (const ivec4 & v)

Initialization by a vector of integer components.

### Arguments

• const ivec4 & v - The value of the vector.

## explicit UNIGINE_INLINEvec4 (const bvec4 & v)

Initialization by a vector of byte components.

### Arguments

• const bvec4 & v - The value of the vector.

## explicit UNIGINE_INLINEvec4 (const float * v)

Initialization by a pointer to the vector.

### Arguments

• const float * v - Pointer to the vector.

## UNIGINE_INLINE vec4operator- () const

Vector negation.

### Return value

The resulting vector.

## UNIGINE_INLINE vec4 &operator*= (float v)

Scalar multiplication.

### Arguments

• float v - The value of the scalar.

### Return value

The resulting vector.

## UNIGINE_INLINE vec4 &operator*= (const vec4 & v)

Vector multiplication.

### Arguments

• const vec4 & v - The value of the vector.

### Return value

The resulting vector.

## UNIGINE_INLINE vec4 &operator+= (const vec4 & v)

### Arguments

• const vec4 & v - The value of the vector.

### Return value

The resulting vector.

## UNIGINE_INLINE vec4 &operator-= (const vec4 & v)

Vector subtraction.

### Arguments

• const vec4 & v - The value of the vector.

### Return value

The resulting vector.

## UNIGINE_INLINE float &operator[] (int i)

Array access.

### Arguments

• int i - Array item index.

The array item.

## UNIGINE_INLINE floatoperator[] (int i) const

Constant array access.

### Arguments

• int i - Array item index.

The array item.

## UNIGINE_INLINE voidset (float x_, float y_, float z_, float w_)

Set vector.

### Arguments

• float x_ - X component of the vector.
• float y_ - Y component of the vector.
• float z_ - Z component of the vector.
• float w_ - W component of the vector.

## UNIGINE_INLINE voidset (const float * v)

Set vector.

### Arguments

• const float * v - Pointer to the vector.

## UNIGINE_INLINE voidget (float * v) const

Get vector.

### Arguments

• float * v - Pointer to the vector.

## UNIGINE_INLINE float *get ()

Get a pointer to the vector.

### Return value

Pointer to the vector.

## UNIGINE_INLINE const float *get () const

Get a constant pointer to the vector.

### Return value

Pointer to the vector.

## Unigine::vec4::Union

union {
struct {
float x;
float y;
float z;
float w;
};
float v[4];
};
Last update: 2017-07-03