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Unigine::Math::dvec2 Struct

Header: #include <UnigineMathLibDVec2.h>

This class represents a vector of 2 double components.

dvec2 Class

Members


dvec2 ( const __m128d& 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 __m128d& v - 128-bit variable.

dvec2 ( const hvec2& v ) #

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

Arguments

  • const hvec2& v - Source vector.

dvec2 ( ) #

Default constructor. Produces a zero vector.

dvec2 ( const dvec2& v ) #

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

Arguments

  • const dvec2& v - Source vector.

dvec2 ( double x, double y ) #

Constructor. Initializes the vector using given double values.

Arguments

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

Examples

Source code (UnigineScript)
dvec2(2.0, 3.0);
/*
Creates a vector (2.0, 3.0)
*/

explicit dvec2 ( double v ) #

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

Arguments

  • double v - Scalar value.

Examples

Source code (UnigineScript)
dvec2(1.0);
/*
Creates a vector (1.0, 1.0)
*/

explicit dvec2 ( const dvec3& v ) #

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

Arguments

  • const dvec3& v - Three-component source vector.

explicit dvec2 ( const dvec4& v ) #

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

Arguments

  • const dvec4& v - Four-component source vector.

explicit dvec2 ( const vec2& v ) #

Constructor. Initializes the vector using a given vec2 source vector.

Arguments

  • const vec2& v - Source vector.

explicit dvec2 ( const ivec2& v ) #

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

Arguments

  • const ivec2& v - Source vector.

explicit dvec2 ( const double* v ) #

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

Arguments

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

dvec2 ( double x, double y, ConstexprTag ) #

Constructor. Initializes the vector using a given double elements.

Arguments

  • double x - Source element.
  • double y - Source element.
  • ConstexprTag - Auxiliary tag.

dvec2 ( double v, ConstexprTag ) #

Constructor. Initializes both vector components using a given double element.

Arguments

  • double v - Source element.
  • ConstexprTag - Auxiliary tag.

dvec2 & abs ( ) #

Returns the absolute values of the vector components.

Return value

Vector with absolute values.

void set ( double x_, double y_ ) #

Sets the vector by components.

Arguments

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

void set ( const double* val ) #

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

Arguments

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

void set ( double val ) #

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

Arguments

  • double val - Scalar value.

void set ( const dvec2& val ) #

Sets the vector equal to the specified source vector.

Arguments

  • const dvec2& val - Source vector.

void get ( double* val ) const#

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

Arguments

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

double * get ( ) #

Returns the pointer to the vector.

Return value

Pointer to the vector.

const double * get ( ) const#

Returns the constant pointer to the vector.

Return value

Pointer to the vector.

double length ( ) const#

Returns the length of the vector.

Return value

Vector length.

double length2 ( ) const#

Returns the squared length of the vector.

Return value

Squared length of the vector.

dvec2 & normalize ( ) #

Returns normalized vector.

Return value

Normalized vector.

dvec2 & 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.

const double * operator const double * ( ) const#

Performs type conversion to const double *.

const void * operator const void * ( ) const#

Performs type conversion to const void *.

double * operator double * ( ) #

Performs type conversion to double *.

void * operator void * ( ) #

Performs type conversion to void *.

dvec2 & operator*= ( double v ) #

Performs scalar multiplication.

Arguments

  • double v - Scalar value.

Return value

Resulting vector.

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

Performs vector multiplication.

Arguments

  • const dvec2& v - Vector.

Return value

Resulting vector.

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

Performs vector addition.

Arguments

  • const dvec2& v - Vector.

Return value

Resulting vector.

dvec2 operator- ( ) const#

Performs vector negation.

Return value

Resulting vector.

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

Performs vector subtraction.

Arguments

  • const dvec2& v - Vector.

Return value

Resulting vector.

dvec2 & operator/= ( double v ) #

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

Arguments

  • double v - Scalar value.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
dvec2 a = dvec2(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)	
*/

dvec2 & operator/= ( const dvec2& v ) #

Performs componentwise division of vectors.

Arguments

  • const dvec2& v - Vector.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
dvec2 a, b;
a = dvec2(6.0, 10.0);
b = dvec2(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)	
*/

dvec2 & operator= ( const __m128d& 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 __m128d& val - 128-bit variable.

Return value

Vector.

dvec2 & operator= ( const dvec2& v ) #

Performs vector assignment. Destination vector = Source vector.

Arguments

  • const dvec2& v - Source vector.

Return value

Result.

double & 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.

double 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 ( double v ) #

Multiplies the vector by the value of the specified argument.

Arguments

  • double v - A double multiplier.

void mul ( const dvec2& v ) #

Multiplies the vector by the value of the specified argument.

Arguments

  • const dvec2& v - Vector multiplier.

void div ( double v ) #

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

Arguments

  • double v - A double divisor value.

void div ( const dvec2& v ) #

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

Arguments

  • const dvec2& v - A dvec2 divisor value.

void sub ( double v ) #

Subtracts each element of the specified value from the corresponding vector's element.

Arguments

  • double v - Value.

void sub ( const dvec2& v ) #

Subtracts each element of the specified value from the corresponding vector's element.

Arguments

  • const dvec2& v - Value.

dvec2 & operator-= ( double v ) #

Subtracts each element of the specified value from the corresponding vector's element.

Arguments

  • double v - Value.

double sum ( ) const#

Returns the sum of vector components.

void add ( double v ) #

Performs addition of the specified value.

Arguments

  • double v - Value.

void add ( const dvec2& v ) #

Performs addition of the specified value.

Arguments

  • const dvec2& v - Value.

dvec2 & operator+= ( double v ) #

Performs addition of the specified value.

Arguments

  • double v - Value.

double iLength ( ) const#

Returns the inverted length of the vector.

Return value

Inverted length.

double max ( ) const#

>Returns the maximum value among all components.

Return value

Maximum value.

double min ( ) const#

Returns the minimum value among all components.

Return value

Minimum value.

dvec2 frac ( ) const#

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

Return value

Fractional parts of the corresponding vector components.

ivec2 floor ( ) const#

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

Return value

Vector containing the largest integral values.

ivec2 ceil ( ) const#

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

Return value

Vector containing the smallest integral values.
Last update: 24.08.2021
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