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  3. TVector4

TVector4

A 4D homogeneous vector, 4x1 FLOATs, 16-byte aligned.

API > API/Runtime > API/Runtime/Core > API/Runtime/Core/Math

Inheritance Hierarchy

References

   
Module Core
Header /Engine/Source/Runtime/Core/Public/Math/MathFwd.h
Include #include "Math/MathFwd.h"
Source /Engine/Source/Runtime/Core/Public/Math/Vector4.h

Syntax

template<typename T>  
struct TVector4

Remarks

A 4D homogeneous vector, 4x1 FLOATs, 16-byte aligned.

Variables

  Type Name Description
Public variable union UE::Math::TVector4    
Public variable T W The vector's W-component.
Public variable T X The vector's X-component.
Public variable T[4] XYZW  
Public variable T Y The vector's Y-component.
Public variable T Z The vector's Z-component.

Constructors

  Type Name Description
Public function  

TVector4 ( const UE::Math::TVector< T >& InVector
)

 Constructor from 3D TVector.
Public function  

TVector4 ( const FLinearColor& InColor,
T InOverrideW
)

 Creates and initializes a new vector from a color RGB and W
Public function  

TVector4 ( TVector2< T > InXY,
TVector2< T > InZW
)

 Creates and initializes a new vector from the specified 2D vectors.
Public function  

TVector4 ( T InX,
T InY,
T InZ,
T InW
)

 Creates and initializes a new vector from the specified components.
Public function  

TVector4 ( const FLinearColor& InColor
)

 Creates and initializes a new vector from a color value.
Public function  

TVector4 ( const FIntVector4& InVector
)

 Creates and initializes a new vector from an int vector value.
Public function   Creates and initializes a new vector to zero.
Public function   Creates an uninitialized new vector.
Public function  

TVector4 ( const TVector4< FArg >& From
)

 Conversion from other type: double->float.
Public function  

TVector4 ( const TVector4< FArg >& From
)

 Conversion from other type: float->double.
Public function  

TVector4 ( const UE::Math::TVector< T >& InVector,
FArg InW
)

 Constructor.
Public function  

TVector4 ( const UE::Math::TVector4< T >& InVector,
FArg OverrideW
)

 Constructor allowing copying of an TVector4 whilst setting up a new W component.

Functions

  Type Name Description
Public function T &

Component ( int32 Index
)

 Gets a specific component of the vector.
Public function Const const T &

Component ( int32 Index
)

 Gets a specific component of the vector.
Public function Const bool Utility to check if there are any non-finite values (NaN or Inf) in this vector.
Public function void  
Public function Const bool

Equals ( const TVector4< T >& V,
T Tolerance
)

 Error tolerant comparison.
Public function Const void

FindBestAxisVectors3 ( TVector4< T >& Axis1,
TVector4< T >& Axis2
)

 Find good arbitrary axis vectors to represent U and V axes of a plane, given just the normal.
Public function Const TVector4

GetSafeNormal ( T Tolerance
)

 Returns a normalized copy of the vector if safe to normalize.
Public function Const TVector4 Calculates normalized version of vector without checking if it is non-zero.
Public function bool

InitFromString ( const FString& InSourceString
)

 Initialize this Vector based on an FString.
Public function Const bool

IsNearlyZero3 ( T Tolerance
)

 Utility to check if all of the components of this vector are nearly zero given the tolerance.
Public function Const bool

IsUnit3 ( T LengthSquaredTolerance
)

 Check if the vector is of unit length, with specified tolerance.
Public function Static TVector4< T >

One ()

 To satisfy UE::Geometry type.
Public function Const TVector4< T >

Reflect3 ( const TVector4< T >& Normal
)

 Reflect vector.
Public function Const TRotator< T > Return the FRotator orientation corresponding to the direction in which the vector points.
Public function bool  
Public function bool  
Public function void

Set ( T InX,
T InY,
T InZ,
T InW
)

 Set all of the vectors coordinates.
Public function Const T

Size ()

 Get the length (magnitude) of this vector, taking the W component into account
Public function Const T

Size3 ()

 Get the length of this vector not taking W component into account.
Public function Const T Get the squared length of this vector, taking the W component into account
Public function Const T Get the squared length of this vector not taking W component into account.
Public function Const TQuat< T > Return the Quaternion orientation corresponding to the direction in which the vector points.
Public function Const TRotator< T > Return the FRotator orientation corresponding to the direction in which the vector points.
Public function Const FString Get a textual representation of the vector.
Public function Static TVector4< T >

Zero ()

 To satisfy UE::Geometry type.

Operators

  Type Name Description
Public function Const TVector4< T >

operator- ( const TVector4< T >& V
)

 Gets the result of subtracting a vector from this.
Public function Const TVector4< T > Gets a negated copy of the vector.
Public function Const bool

operator!= ( const TVector4< T >& V
)

 Checks for inequality against another vector.
Public function Const TVector4< T >

operator* ( const TVector4< T >& V
)

 Gets the result of multiplying a vector with this.
Public function Const TVector4< T >

operator* ( FArg Scale
)

 Gets the result of scaling this vector.
Public function TVector4< T >

operator*= ( FArg Scale
)

 Gets the result of scaling this vector.
Public function TVector4< T >

operator*= ( const TVector4< T >& V
)

 Gets the result of multiplying a vector with another Vector (component wise).
Public function Const TVector4< T >

operator/ ( const TVector4< T >& V
)

 Gets the result of dividing this vector.
Public function Const TVector4< T >

operator/ ( FArg Scale
)

 Gets the result of dividing this vector.
Public function TVector4< T >

operator/= ( FArg Scale
)

 Gets the result of scaling this vector by 1/Scale.
Public function TVector4< T >

operator/= ( const TVector4< T >& V
)

 Gets the result of dividing a vector with another Vector (component wise).
Public function Const T

operator[] ( int32 ComponentIndex
)

 Access a specific component of the vector.
Public function T &

operator[] ( int32 ComponentIndex
)

 Access a specific component of the vector.
Public function Const TVector4< T >

operator^ ( const TVector4< T >& V
)

 Calculate Cross product between this and another vector.
Public function Const TVector4< T >

operator+ ( const TVector4< T >& V
)

 Gets the result of adding a vector to this.
Public function TVector4< T >

operator+= ( const TVector4< T >& V
)

 Adds another vector to this one.
Public function TVector4< T >

operator-= ( const TVector4< T >& V
)

 Subtracts another vector to this one.
Public function Const bool

operator== ( const TVector4< T >& V
)

 Checks for equality against another vector.

Typedefs

Name Description
FReal Can't have a UE_REQUIRES in the declaration because of the forward declarations, so check for allowed types here.

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