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Unigine::Math::dvec4 Struct

Header: #include <UnigineMathLibDVec4.h>

This class represents a vector of 4 double components.

dvec4 Class

Members


dvec4 ( const hvec4& v ) #

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

Arguments

  • const hvec4& v - Source vector.

dvec4 ( ) #

Default constructor. Produces a zero vector.

dvec4 ( const dvec4& v ) #

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

Arguments

  • const dvec4& v - Source vector.

dvec4 ( const dvec2& v, double z, double w ) #

Constructor. Initializes the vector using a given two-component dvec2 source vector and two scalars.

Arguments

  • const dvec2& v - Two-component source vector.
  • double z - Z component of the vector.
  • double w - W component of the vector.

dvec4 ( const dvec3& v, double w ) #

Constructor. Initializes the vector using a given three-component dvec3 source vector and a scalar.

Arguments

  • const dvec3& v - Three-component source vector.
  • double w - W component of the vector.

dvec4 ( double x, double y, double z, double w ) #

Constructor. Initializes the vector using given double values.

Arguments

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

Examples

Source code (UnigineScript)
dvec4(1.0, 2.0, 3.0, 4.5);
/*
Creates a vector (1.0, 2.0, 3.0, 4.5)
*/

explicit dvec4 ( double v ) #

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

Arguments

  • double v - Scalar value.

explicit dvec4 ( const dvec2& v ) #

Constructor. Initializes the vector using a given two-component dvec2 source vector: x=v.x, y=v.y, z=0.0f, w=1.0f.

Arguments

  • const dvec2& v - Two-component source vector.

explicit dvec4 ( const dvec3& v ) #

Constructor. Initializes the vector using a given three-component dvec3 source vector: x=v.x, y=v.y, z=v.z, w=1.0f.

Arguments

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

explicit dvec4 ( const vec4& v ) #

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

Arguments

  • const vec4& v - Source vector.

explicit dvec4 ( const ivec4& v ) #

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

Arguments

  • const ivec4& v - Source vector.

explicit dvec4 ( const bvec4& v ) #

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

Arguments

  • const bvec4& v - Source vector.

explicit dvec4 ( const svec4& v ) #

Constructor. Initializes the vector using a given svec4 source vector.

Arguments

  • const svec4& v - Source vector.

explicit dvec4 ( const double* v ) #

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

Arguments

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

dvec4 ( const __m128d& v0, const __m128d& v1 ) #

Constructor. Initializes the vector using two __m128d variables.
Notice
We do not recommend to use this method unless you have a clear understanding of SSE2.

Arguments

  • const __m128d& v0 - X and Y components of the vector in __m128d format.
  • const __m128d& v1 - Z and W components of the vector in __m128d format.

dvec4 ( const dvec2& v0, const dvec2& v1 ) #

Constructor. Initializes the vector using two dvec2 vectors.

Arguments

  • const dvec2& v0 - Two-component source vector for X and Y components.
  • const dvec2& v1 - Two-component source vector for Z and W components.

dvec4 ( double x, double y, double z, double w, ConstexprTag ) #

Constructor. Initializes the vector using given constant double values.

Arguments

  • double x - X component of the vector.
  • double y - Y component of the vector.
  • double z - Z component of the vector.
  • double w - W component of the vector.
  • ConstexprTag - Auxiliary tag.

dvec4 ( double v, ConstexprTag ) #

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

Arguments

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

dvec4 & abs ( ) #

Returns the absolute values of the vector components.

Return value

Vector with absolute values.

void set ( double x_, double y_, double z_, double w_ ) #

Sets the vector by components.

Arguments

  • double x_ - X component of the vector.
  • double y_ - Y component of the vector.
  • double z_ - Z component of the vector.
  • double w_ - W component of the vector.

void set ( const double* v ) #

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

Arguments

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

void set ( const dvec4& v ) #

Sets the vector equal to the specified source vector.

Arguments

  • const dvec4& v - Source vector.

void set ( const dvec3& v, double w_ ) #

Sets the vector using a three-component dvec3 source vector and a scalar.

Arguments

  • const dvec3& v - Three-component source vector.
  • double w_ - W component of the vector.

void set ( double v ) #

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

Arguments

  • double v - Scalar value.

void set ( const dvec2& v, double z_, double w_ ) #

Sets the vector using a two-component dvec2 source vector and two scalars.

Arguments

  • const dvec2& v - Two-component source vector.
  • double z_ - Z component of the vector.
  • double w_ - W component of the vector.

void get ( double* v ) const#

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

Arguments

  • double* v - 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.

dvec4 & normalize ( ) #

Returns normalized vector.

Return value

Normalized vector.

dvec4 & 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.

dvec4 & normalize3 ( ) #

Returns the vector with normalized XYZ components.

Return value

Vector with normalized XYZ components.

dvec4 & normalizeValid3 ( ) #

Returns the vector with normalized XYZ components. Check for the zero vector is performed: if the argument is a zero vector, then a zero vector is returned.

Return value

Vector with normalized XYZ components.

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 *.

dvec4 & operator*= ( double v ) #

Performs scalar multiplication.

Arguments

  • double v - Scalar value.

Return value

Resulting vector.

dvec4 & operator*= ( const dvec4& v ) #

Performs vector multiplication.

Arguments

  • const dvec4& v - Vector.

Return value

Resulting vector.

dvec4 & operator+= ( const dvec4& v ) #

Performs vector addition.

Arguments

  • const dvec4& v - Vector.

Return value

Resulting vector.

dvec4 operator- ( ) const#

Performs vector negation.

Return value

Resulting vector.

dvec4 & operator-= ( const dvec4& v ) #

Performs vector subtraction.

Arguments

  • const dvec4& v - Vector.

Return value

Resulting vector.

dvec4 & operator/= ( const dvec4& v ) #

Performs componentwise division of vectors.

Arguments

  • const dvec4& v - Vector.

Return value

Resulting vector.

Examples

Source code (UnigineScript)
dvec4 a, b;
a = dvec4(6.0, 10.0, 12.0, 25.0);
b = dvec4(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)	
*/

dvec4 & 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)
dvec4 a = dvec4(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)	
*/

dvec4 & operator= ( const dvec4& v ) #

Performs vector assignment. Destination vector = Source vector.

Arguments

  • const dvec4& 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 dvec4& v ) #

Multiplies the vector by the value of the specified argument.

Arguments

  • const dvec4& v - Vector multiplier.

void mul3 ( double v ) #

Multiplies the X, Y, and Z components of the vector by the value of the specified argument.

Arguments

  • double v - A double 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 dvec4& v ) #

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

Arguments

  • const dvec4& v - A dvec4 divisor 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 dvec4& v ) #

Performs addition of the specified value.

Arguments

  • const dvec4& v - Value.

dvec4 & operator+= ( double v ) #

Performs addition of the specified value.

Arguments

  • double v - 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 dvec4& v ) #

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

Arguments

  • const dvec4& v - Value.

dvec4 & operator-= ( double v ) #

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

Arguments

  • double v - Value.

double iLength ( ) const#

Returns the inverted length of the vector.

double maxXY ( ) const#

Returns the maximum of X and Y components.

double maxXYZ ( ) const#

Returns the maximum of X, Y, and Z components.

double max ( ) const#

Returns the maximum of X, Y, Z, and W components.
Last update: 2021-08-24
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