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# Unigine::hvec4 Class

This class represents a vector of 4 half (16-bit float) components.

## hvec4()

Default constructor. Produces a zero vector.

## hvec4(const hvec4 & v)

Constructor. Initializes the vector by copying a given source vector.

### Arguments

• const hvec4 & v - Source vector.

## hvec4(half x, half y, half z, half w)

Constructor. Initializes the vector using given half values.

### Arguments

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

### Examples

Source code (UnigineScript)
``````hvec4(2.0, 3.0, 1.0, 4.0);
/*
Creates a vector (2.0, 3.0, 1.0, 4.0)
*/``````

## hvec4(half v)

Constructor. Initializes the vector using given half value.

### Arguments

• half v - Scalar value.

### Examples

Source code (UnigineScript)
``````hvec4(1.0);
/*
Creates a vector (1.0, 1.0, 1.0, 1.0)
*/``````

## hvec4(float v)

Constructor. Initializes the vector using a given scalar value: x=v, y=v, z=v, w=v.

### Arguments

• float v - Scalar value.

## hvec4(const vec4 & v)

Constructor. Initializes the vector using a given vec4 source vector.

### Arguments

• const vec4 & v - Source vector.

## hvec4(const dvec4 & v)

Constructor. Initializes the vector using a given dvec4 source vector.

### Arguments

• const dvec4 & v - Source vector.

## const half *operator const Unigine::Math::half *()

Performs type conversion to const half *.

## const void *operator const void *()

Performs type conversion to const void *.

## half *operator Unigine::Math::half *()

Performs type conversion to half *.

## void *operator void *()

Performs type conversion to void *.

## hvec4 &operator=(const hvec4 & v)

Performs vector assignment. Destination vector = Source vector.

### Arguments

• const hvec4 & v - Source vector.

Result.

## half &operator[](int i)

Performs array access to the vector item reference by using given item index.

### Arguments

• int i - Vector item index.

### Return value

Vector item reference.

## halfoperator[](int i)

Performs array access to the vector item by using given item index.

### Arguments

• int i - Vector item index.

Vector item.

## hvec4 ONE

### Description

Vector, filled with ones (1).

## hvec4 ZERO

### Description

Vector, filled with zeros (0).
Last update: 04.06.2018