Unigine::Unigine::vec4 Struct

This class represents a vector of 4 float components.

vec4( const __m128 & v )

Constructor. Initializes the vector using a given 128-bit variable as a source.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Arguments

• const __m128 & v - 128-bit variable

vec4( const quat & q )

Arguments

• const quat & q

vec4( const hvec4 & v )

Constructor. Initializes the vector using a given hvec4 source vector.

Arguments

• const hvec4 & v - Source vector.

vec4( )

Default constructor. Produces a zero vector.

vec4( const vec4 & v )

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

Arguments

• const vec4 & v - Source vector.

vec4( const vec2 & v, float z, float w )

Constructor. Initializes the vector using a given two-component vec2 source vector and two scalars.

Arguments

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

vec4( const vec3 & v, float w )

Constructor. Initializes the vector using a given three-component vec3 source vector and a scalar.

Arguments

• const vec3 & v - Three-component source vector.
• float w - W component of the vector.

vec4( float x, float y, float z, float w )

Constructor. Initializes the vector using given float values.

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 vec4( float v )

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

Arguments

• float v - Scalar value.

explicit vec4( const vec2 & v )

Constructor. Initializes the vector using a given two-component vec2 source vector: x=v.x, y=v.y, z=0.0f, w=1.0f.

Arguments

• const vec2 & v - Two-component source vector.

explicit vec4( const vec3 & v )

Constructor. Initializes the vector using a given three-component vec3 source vector: x=v.x, y=v.y, z=v.z, w=1.0f.

Arguments

• const vec3 & v - Three-component source vector.

explicit vec4( const dvec4 & v )

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

Arguments

• const dvec4 & v - Source vector.

explicit vec4( const ivec4 & v )

Constructor. Initializes the vector using a given ivec4 source vector.

Arguments

• const ivec4 & v - Source vector.

explicit vec4( const bvec4 & v )

Constructor. Initializes the vector using a given bvec4 source vector.

Arguments

• const bvec4 & v - Source vector.

explicit vec4( const float * v )

Constructor. Initializes the vector using a given pointer to the array of float elements: x=v[0], y=v[1], z=v[2], w=v[3].

Arguments

• const float * v - Pointer to the array of float elements.

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

Sets the vector by components.

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.

voidset( const float * val )

Sets the vector using the array of float elements: x=val[0], y=val[1], z=val[2], w=val[3].

Arguments

• const float * val - Pointer to the array of float elements.

voidset( const vec4 & val )

Sets the vector equal to the specified source vector.

Arguments

• const vec4 & val - Source vector.

voidset( const vec2 & val, float z_, float w_ )

Sets the vector using a two-component vec2 source vector and two scalars.

Arguments

• const vec2 & val - Two-component source vector.
• float z_ - Z component of the vector.
• float w_ - W component of the vector.

voidset( const vec3 & val, float w_ )

Sets the vector using a three-component vec3 source vector and a scalar.

Arguments

• const vec3 & val - Three-component source vector.
• float w_ - W component of the vector.

voidset( const quat & q )

Sets the vector using a quaternion.

Arguments

• const quat & q - Quaternion.

voidset( float val )

Sets the vector components equal to specified scalar value: x=val, y=val, z=val, w=val.

Arguments

• float val - Scalar value.

voidget( float * val ) const

Gets the vector: val[0]=x, val[1]=y, val[2]=z, val[3]=w.

Arguments

• float * val - Pointer to the array of float elements.

float *get( )

Returns the pointer to the vector.

Return value

Pointer to the vector.

const float *get( ) const

Returns the constant pointer to the vector.

Return value

Pointer to the vector.

floatlength( )

Returns the length of the vector.

Vector length.

floatlength2( )

Returns the squared length of the vector.

Return value

Squared length of the vector.

vec4 &normalize( )

Returns normalized vector.

Return value

Normalized vector.

vec4 &normalize3( )

Returns the vector with normalized XYZ components.

Return value

Vector with normalized XYZ components.

vec4 &normalizeFast( )

Returns normalized vector, calculated using the fast inverse square root algorithm.

Return value

Normalized vector.

vec4 &normalizeFast3( )

Returns the vector with XYZ components normalized using the fast inverse square root algorithm..

Return value

Vector with normalized XYZ components.

__m128operator __m128( )

Performs type conversion to __m128.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

const float *operator const float *( )

Performs type conversion to const float *.

const void *operator const void *( )

Performs type conversion to const void *.

float *operator float *( )

Performs type conversion to float *.

void *operator void *( )

Performs type conversion to void *.

vec4 &operator*=( float val )

Performs scalar multiplication.

Arguments

• float val - Scalar value.

Return value

Resulting vector.

vec4 &operator*=( const vec4 & val )

Performs vector multiplication.

Arguments

• const vec4 & val - Vector.

Return value

Resulting vector.

vec4 &operator+=( const vec4 & val )

Arguments

• const vec4 & val - Vector.

Return value

Resulting vector.

vec4operator-( ) const

Performs vector negation.

Return value

Resulting vector.

vec4 &operator-=( const vec4 & val )

Performs vector subtraction.

Arguments

• const vec4 & val - Vector.

Return value

Resulting vector.

vec4 &operator/=( float val )

Performs componentwise division of the vector by the scalar. Implemented using the calculation of inverse scalar value with subsequent by-component multiplication.

Arguments

• float val - Scalar value.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
``````vec4 a = vec4(6.0, 10.0, 12.0, 25.0);
a /= 2.0;
/*
Initial value of vector a:
a (6.0, 10.0, 12.0, 25.0)

a /= 2.0;
Vector a after operation:
a (3.0, 5.0, 6.0, 12.5)
*/``````

vec4 &operator/=( const vec4 & val )

Performs componentwise division of vectors.

Arguments

• const vec4 & val - Vector.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
``````vec4 a, b;
a = vec4(6.0, 10.0, 12.0, 25.0);
b = vec4(2.0, 5.0, 6.0, 5.0);
a /= b;
/*
Initial values of vectors a and b:
a (6.0, 10.0, 12.0, 25.0)
b (2.0, 5.0, 6.0, 5.0)

a /= b;
Vector a after operation:
a (3.0, 2.0, 2.0, 5.0)
*/``````

vec4 &operator=( const __m128 & val )

Sets the vector using a given 128-bit variable as a source.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Arguments

• const __m128 & val - 128-bit variable.

Vector.

vec4 &operator=( const vec4 & val )

Performs vector assignment. Destination vector = Source vector.

Arguments

• const vec4 & val - Source vector.

Result.

float &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.

floatoperator[]( int i ) const

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

Arguments

• int i - Vector item index.

Vector item.

__m128sse( )

Returns vector components as a 128-bit variable.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Return value

128-bit variable.

voidsse( const __m128 & val )

Sets the vector using a given 128-bit variable as a source.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Arguments

• const __m128 & val - 128-bit variable.
Last update: 2020-01-14