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# Unigine::dvec2 Struct

Vector of 2 double components.

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

## UNIGINE_DECLARE_USE_MEMORY UNIGINE_INLINEdvec2 ()

Default constructor that produces a zero vector.

## UNIGINE_INLINEdvec2 (const dvec2 & v)

Initialization by a vector.

### Arguments

• const dvec2 & v - The value of the vector.

## UNIGINE_INLINEdvec2 (double x, double y)

Initialization by scalars.

### Arguments

• double x - X component of the vector.
• double y - Y component of the vector.

## explicit UNIGINE_INLINEdvec2 (double v)

Initialization by a scalar: x=v, y=v.

### Arguments

• double v - The value of the vector.

## explicit UNIGINE_INLINEdvec2 (const dvec3 & v)

Initialization by a four component vector: x=v.x, y=v.y.

### Arguments

• const dvec3 & v - The value of the vector.

## explicit UNIGINE_INLINEdvec2 (const dvec4 & v)

Initialization by a four component vector: x=v.x, y=v.y.

### Arguments

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

## explicit UNIGINE_INLINEdvec2 (const vec2 & v)

Initialization by a vector.

### Arguments

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

## explicit UNIGINE_INLINEdvec2 (const ivec2 & v)

Initialization by a vector of integer components.

### Arguments

• const ivec2 & v - The value of the vector.

## explicit UNIGINE_INLINEdvec2 (const double * v)

Initialization by a pointer to the vector.

### Arguments

• const double * v - Pointer to the vector.

## UNIGINE_INLINE dvec2operator- () const

Vector negation.

### Return value

The resulting vector.

## UNIGINE_INLINE dvec2 &operator*= (double v)

Scalar multiplication.

### Arguments

• double v - The value of the scalar.

### Return value

The resulting vector.

## UNIGINE_INLINE dvec2 &operator*= (const dvec2 & v)

Vector multiplication.

### Arguments

• const dvec2 & v - The value of the vector.

### Return value

The resulting vector.

## UNIGINE_INLINE dvec2 &operator+= (const dvec2 & v)

### Arguments

• const dvec2 & v - The value of the vector.

### Return value

The resulting vector.

## UNIGINE_INLINE dvec2 &operator-= (const dvec2 & v)

Vector subtraction.

### Arguments

• const dvec2 & v - The value of the vector.

### Return value

The resulting vector.

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

Array access.

### Arguments

• int i - Array item index.

The array item.

## UNIGINE_INLINE doubleoperator[] (int i) const

Constant array access.

### Arguments

• int i - Array item index.

The array item.

## UNIGINE_INLINE voidset (double x_, double y_)

Set vector.

### Arguments

• double x_ - X component of the vector.
• double y_ - Y component of the vector.

## UNIGINE_INLINE voidset (const double * v)

Set vector.

### Arguments

• const double * v - Pointer to the vector.

## UNIGINE_INLINE voidget (double * v) const

Get vector.

### Arguments

• double * v - Pointer to the vector.

## UNIGINE_INLINE double *get ()

Get a pointer to the vector.

### Return value

Pointer to the vector.

## UNIGINE_INLINE const double *get () const

Get a constant pointer to the vector.

### Return value

Pointer to the vector.

## Unigine::dvec2:: Union

union {
struct {
double x;
double y;
};
double v[2];
};
Last update: 2017-07-03