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  3. TTransform2

TTransform2

Support for generalized 2D affine transforms.

API > API/Runtime > API/Runtime/Core

Support for generalized 2D affine transforms. Implemented as a 2x2 transform followed by translation. In matrix form: [A B 0] [C D 0] [X Y 1]

   
Name TTransform2
Type class
Header File /Engine/Source/Runtime/Core/Public/Math/TransformCalculus2D.h
Include Path #include "Math/TransformCalculus2D.h"

Syntax

template<typename T>  
class TTransform2

Constructors

Name Remarks Include Path Unreal Specifiers

TTransform2 ( const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using an identity matrix and a translation. Math/TransformCalculus2D.h  

TTransform2 ( T UniformScale,
const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using a uniform scale and a translation. Math/TransformCalculus2D.h  

TTransform2 ( const TScale2< T >& Scale,
const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using a 2D scale and a translation. Math/TransformCalculus2D.h  

TTransform2 ( const TShear2< T >& Shear,
const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using a 2D shear and a translation. Math/TransformCalculus2D.h  

TTransform2 ( const TQuat2< T >& Rot,
const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using a 2D rotation and a translation. Math/TransformCalculus2D.h  

TTransform2 ( const TMatrix2x2< T >& Transform,
const UE::Math::TVector2< VType >& Translation
)

 Initialize the transform using a general 2x2 transform and a translation. Math/TransformCalculus2D.h  

Typedefs

Name Type Remarks Include Path
FReal T   Math/TransformCalculus2D.h
Matrix2Type TMatrix2x2< T >   Math/TransformCalculus2D.h
Vector2Type UE::Math::TVector2< T >   Math/TransformCalculus2D.h

Variables

Protected

Name Type Remarks Include Path Unreal Specifiers
M Matrix2Type   Math/TransformCalculus2D.h  
Trans Vector2Type   Math/TransformCalculus2D.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

TTransform2 Concatenate ( const TTransform2& RHS
) const

 Concatenates two transforms. Math/TransformCalculus2D.h  

bool ContainsNaN()

 Utility to check if there are any non-finite values (NaN or Inf) in this transform. Math/TransformCalculus2D.h  

const Matrix2Type & GetMatrix()

 Access to the 2x2 transform Math/TransformCalculus2D.h  

const FVector2D GetTranslation()

 Const Vector2Type GetTranslation() const { return Vector2Type(Trans); } Math/TransformCalculus2D.h  
Inverts a transform. Math/TransformCalculus2D.h  

bool IsIdentity ()

 Specialized function to determine if a transform is precisely the identity transform. Math/TransformCalculus2D.h  

void SetTranslation ( const UE::Math::TVector2< VType >& InTrans
)

   Math/TransformCalculus2D.h  

UE::Math::TMatrix< T > To3DMatrix()

 Converts this affine 2D Transform into an affine 3D transform. Math/TransformCalculus2D.h  

UE::Math::TVector2< VType > TransformPoint ( const UE::Math::TVector2< VType >& Point
) const

 2D transformation of a point. Transforms position, rotation, and scale. Math/TransformCalculus2D.h  

UE::Math::TVector2< VType > TransformVector ( const UE::Math::TVector2< VType >& Vector
) const

 2D transformation of a vector. Transforms rotation and scale. Math/TransformCalculus2D.h  

Operators

Name Remarks Include Path Unreal Specifiers

bool operator!= ( const TTransform2& Other
) const

 Inequality. Math/TransformCalculus2D.h  

bool operator== ( const TTransform2& Other
) const

 Equality. Math/TransformCalculus2D.h  

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