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Unigine::Math::vec2 Struct

Header: #include <UnigineMathLibVec2.h>

This class represents a vector of 2 float components.

vec2 Class

Members


vec2 ( const hvec2& v ) #

Constructor. Initializes the vector using a given hvec2 source vector.

Arguments

  • const hvec2& v - Source vector.

vec2 ( ) #

Default constructor. Produces a zero vector.

vec2 ( const vec2& v ) #

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

Arguments

  • const vec2& v - Source vector.

vec2 ( float x, float y ) #

Constructor. Initializes the vector using given float values.

Arguments

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

Examples

Source code (UnigineScript)
vec2(2.0, 3.0);
/*
Creates a vector (2.0, 3.0)
*/

explicit vec2 ( float v ) #

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

Arguments

  • float v - Scalar value.

Examples

Source code (UnigineScript)
vec2(1.0);
/*
Creates a vector (1.0, 1.0)
*/

explicit vec2 ( const vec3& v ) #

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

Arguments

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

explicit vec2 ( const vec4& v ) #

Constructor. Initializes the vector using a given four-component vec4 source vector: x=v.x, y=v.y.

Arguments

  • const vec4& v - Four-component source vector.

explicit vec2 ( const dvec2& v ) #

Constructor. Initializes the vector using a given dvec2 source vector.

Arguments

  • const dvec2& v - Source vector.

explicit vec2 ( const ivec2& v ) #

Constructor. Initializes the vector using a given ivec2 source vector.

Arguments

  • const ivec2& v - Source vector.

explicit vec2 ( const float* v ) #

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

Arguments

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

vec2 ( float x, float y, ConstexprTag ) #

Constructor. Initializes the vector using given constant float values.

Arguments

  • float x - X component of the vector.
  • float y - Y component of the vector.
  • ConstexprTag - Auxiliary tag.

vec2 ( float v, ConstexprTag ) #

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

Arguments

  • float v - Constant scalar value.
  • ConstexprTag - Auxiliary tag.

vec2 & abs ( ) #

Returns the absolute values of the vector components.

Return value

Vector with absolute values.

void set ( float x_, float y_ ) #

Sets the vector by components.

Arguments

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

void set ( const float* val ) #

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

Arguments

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

void set ( const vec2& val ) #

Sets the vector equal to the specified source vector.

Arguments

  • const vec2& val - Source vector.

void set ( float val ) #

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

Arguments

  • float val - Scalar value.

void get ( float* val ) const#

Gets the vector: val[0]=x, val[1]=y.

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.

float length ( ) const#

Returns the length of the vector.

Return value

Vector length.

float length2 ( ) const#

Returns the squared length of the vector.

Return value

Squared length of the vector.

float max ( ) const#

Compares the vector components and returns the greater one.

Return value

The greater out of the two vector components.

vec2 & normalize ( ) #

Returns normalized vector.

Return value

Normalized vector.

vec2 & normalizeValid ( ) #

Normalizes a vector, makes its magnitude equal to 1. When normalized, a vector keeps the same direction but its length is equal to 1. Check for the zero vector is performed: if the argument is a zero vector, then a zero vector is returned.

Return value

Normalized vector.

vec2 & normalizeFast ( ) #

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

Return value

Normalized vector.

vec2 & normalizeValidFast ( ) #

Returns normalized vector, calculated using the fast inverse square root algorithm. Check for the zero vector is performed: if the argument is a zero vector, then a zero vector is returned.

Return value

Normalized vector.

const float * operator const float * ( ) const#

Performs type conversion to const float *.

const void * operator const void * ( ) const#

Performs type conversion to const void *.

float * operator float * ( ) #

Performs type conversion to float *.

void * operator void * ( ) #

Performs type conversion to void *.

vec2 & operator*= ( float v ) #

Performs scalar multiplication.

Arguments

  • float v - Scalar value.

Return value

Resulting vector.

vec2 & operator*= ( const vec2& v ) #

Performs vector multiplication.

Arguments

  • const vec2& v - Vector.

Return value

Resulting vector.

vec2 & operator+= ( const vec2& v ) #

Performs vector addition.

Arguments

  • const vec2& v - Vector.

Return value

Resulting vector.

vec2 operator- ( ) const#

Performs vector negation.

Return value

Resulting vector.

vec2 & operator-= ( const vec2& v ) #

Performs vector subtraction.

Arguments

  • const vec2& v - Vector.

Return value

Resulting vector.

vec2 & operator/= ( const vec2& v ) #

Performs componentwise division of vectors.

Arguments

  • const vec2& v - Vector.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
vec2 a, b;
a = vec2(6.0, 10.0);
b = vec2(2.0, 5.0);
a /= b;
/*
Initial values of vectors a and b:
	a (6.0, 10.0)
	b (2.0, 5.0)

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

vec2 & operator/= ( float v ) #

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

Arguments

  • float v - Scalar value.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
vec2 a = vec2(6.0, 10.0);
a /= 2.0;
/*
Initial value of vector a:
	a (6.0, 10.0)

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

vec2 & operator= ( const vec2& v ) #

Performs vector assignment. Destination vector = Source vector.

Arguments

  • const vec2& v - Source vector.

Return value

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.

float operator[] ( int i ) const#

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

Arguments

  • int i - Vector item index.

Return value

Vector item.

void mul ( float v ) #

Multiplies the vector by the value of the specified argument.

Arguments

  • float v - A float multiplier.

void mul ( const vec2& v ) #

Multiplies the vector by the value of the specified argument.

Arguments

  • const vec2& v - Vector multiplier.

void div ( float v ) #

Returns the result of division of the vector by the value of the specified arguments.

Arguments

  • float v - A float divisor value.

void div ( const vec2& v ) #

Returns the result of division of the vector by the value of the specified arguments.

Arguments

  • const vec2& v - A vec2 divisor value.

vec2 & operator/= ( float v ) #

Returns the result of division of the vector by the value of the specified arguments.

Arguments

  • float v - Value.

Return value

This vector.

vec2 & operator/= ( const ivec2& v ) #

Returns the result of division of the vector by the value of the specified arguments.

Arguments

  • const ivec2& v - Value.

Return value

This vector.

void sub ( float v ) #

Subtracts the argument from all elements of the vector.

Arguments

  • float v - Value.

void sub ( const vec2& v ) #

Subtracts each element of the specified argument from ther corresponding element.

Arguments

  • const vec2& v - Value.

vec2 & operator-= ( float v ) #

Subtracts the argument from all elements of the vector.

Arguments

  • float v - Value.

Return value

This vector.

float sum ( ) const#

Returns the sum of vector components.

void add ( float v ) #

Performs addition of the specified argument.

Arguments

  • float v - Value.

void add ( const vec2& v ) #

Performs addition of the specified argument.

Arguments

  • const vec2& v - Value.

vec2 & operator+= ( float v ) #

Performs addition of the specified value.

Arguments

  • float v - Value.

Return value

This vector.

float iLength ( ) const#

Returns the inverted length of the vector.

float iLengthFast ( ) const#

Returns the inverted length of the vector (fast version).

vec2 frac ( ) const#

Returns a vector containing fractional parts of the corresponding vector components.

float min ( ) const#

Returns the minimum value among all components.

ivec2 floor ( ) const#

Returns a vector containing the largest integral values each being less than or equal to the corresponding vector component.

ivec2 ceil ( ) const#

Returns a vector containing the smallest integral values each being greater than or equal to the corresponding vector component.
Last update: 2021-08-24
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