AGUI2Transform Class Reference

#include <AGUI2Transform.h>

Public Types
enum	TUninitialised { Uninitialised }

Public Member Functions
constexpr	AGUI2Transform ()
constexpr	AGUI2Transform (TUninitialised)
	~AGUI2Transform ()=default
void	Rotate (TFLOAT a_fAngle)
void	PreMultiply (const AGUI2Transform &a_rTransform)
void	Scale (TFLOAT a_fScaleX, TFLOAT a_fScaleY)
void	Transform (Toshi::TVector2 &a_rOutVec, const Toshi::TVector2 &a_rTransformVec) const
void	GetInverse (AGUI2Transform &a_rInverse) const
void	SetScale (TFLOAT a_fScaleX, TFLOAT a_fScaleY)
void	SetFromScale (TFLOAT a_fScaleX, TFLOAT a_fScaleY)
constexpr void	Set (const Toshi::TVector2 &a_rcMatComp1, const Toshi::TVector2 &a_rcMatComp2, const Toshi::TVector2 &a_rcTranslation)
constexpr void	SetIdentity ()
constexpr void	SetZero ()
constexpr void	SetTranslation (TFLOAT a_fX, TFLOAT a_fY)
constexpr void	SetTranslation (const Toshi::TVector2 &a_rcTranslation)
constexpr const Toshi::TVector2 &	GetTranslation () const

Static Public Member Functions
static void	Multiply (AGUI2Transform &a_rOutTransform, const AGUI2Transform &a_rA, const AGUI2Transform &a_rB)

Public Attributes
Toshi::TVector2	m_aMatrixRows [2]
Toshi::TVector2	m_vecTranslation

Detailed Description

Definition at line 4 of file AGUI2Transform.h.

Member Enumeration Documentation

TUninitialised

enum AGUI2Transform::TUninitialised

Enumerator
Uninitialised

Definition at line 7 of file AGUI2Transform.h.

    {
        Uninitialised
    };

Constructor & Destructor Documentation

AGUI2Transform() [1/2]

AGUI2Transform::AGUI2Transform ( )

inlineconstexpr

Definition at line 14 of file AGUI2Transform.h.

    {
        SetIdentity();
    }

AGUI2Transform() [2/2]

AGUI2Transform::AGUI2Transform ( TUninitialised )

inlineconstexpr

Definition at line 19 of file AGUI2Transform.h.

{}

~AGUI2Transform()

AGUI2Transform::~AGUI2Transform ( )

default

Member Function Documentation

GetInverse()

void AGUI2Transform::GetInverse

(

AGUI2Transform &

a_rInverse

)

const

Definition at line 52 of file AGUI2Transform.cpp.

{
    TFLOAT fMultiplier = 1.0f / ( m_aMatrixRows[ 0 ].x * m_aMatrixRows[ 1 ].y - m_aMatrixRows[ 0 ].y * m_aMatrixRows[ 1 ].x );
 
    // NOTE: this code seems to be returning incorrect inverse matrices but
    // it's the way it works in Barnyard. In de Blob, however, it was rewritten
    // to do math the correct way.
    a_rInverse.m_aMatrixRows[ 0 ].x = fMultiplier * m_aMatrixRows[ 0 ].x;
    a_rInverse.m_aMatrixRows[ 0 ].y = fMultiplier * m_aMatrixRows[ 1 ].x;
    a_rInverse.m_aMatrixRows[ 1 ].x = fMultiplier * m_aMatrixRows[ 0 ].y;
    a_rInverse.m_aMatrixRows[ 1 ].y = fMultiplier * m_aMatrixRows[ 1 ].y;
 
    // Someone probably forgot to remove some extra code?
    a_rInverse.m_vecTranslation   = TVector2( 0.0f, 0.0f );
    a_rInverse.m_vecTranslation.x = a_rInverse.m_aMatrixRows[ 1 ].x * m_vecTranslation.y + a_rInverse.m_aMatrixRows[ 0 ].x * m_vecTranslation.x + a_rInverse.m_vecTranslation.x;
    a_rInverse.m_vecTranslation.y = a_rInverse.m_aMatrixRows[ 0 ].y * m_vecTranslation.x + a_rInverse.m_aMatrixRows[ 1 ].y * m_vecTranslation.y + a_rInverse.m_vecTranslation.y;
    a_rInverse.m_vecTranslation.Negate();
}

GetTranslation()

const Toshi::TVector2 & AGUI2Transform::GetTranslation ( ) const

inlineconstexpr

Definition at line 67 of file AGUI2Transform.h.

{ return m_vecTranslation; }

Multiply()

void AGUI2Transform::Multiply ( AGUI2Transform & a_rOutTransform, const AGUI2Transform & a_rA, const AGUI2Transform & a_rB )

static

Definition at line 85 of file AGUI2Transform.cpp.

{
    a_rOutTransform.m_aMatrixRows[ 0 ].x = a_rB.m_aMatrixRows[ 0 ].y * a_rA.m_aMatrixRows[ 1 ].x + a_rA.m_aMatrixRows[ 0 ].x * a_rB.m_aMatrixRows[ 0 ].x;
    a_rOutTransform.m_aMatrixRows[ 0 ].y = a_rB.m_aMatrixRows[ 0 ].y * a_rA.m_aMatrixRows[ 1 ].y + a_rA.m_aMatrixRows[ 0 ].y * a_rB.m_aMatrixRows[ 0 ].x;
    a_rOutTransform.m_aMatrixRows[ 1 ].x = a_rB.m_aMatrixRows[ 1 ].x * a_rA.m_aMatrixRows[ 0 ].x + a_rB.m_aMatrixRows[ 1 ].y * a_rA.m_aMatrixRows[ 1 ].x;
    a_rOutTransform.m_aMatrixRows[ 1 ].y = a_rB.m_aMatrixRows[ 1 ].x * a_rA.m_aMatrixRows[ 0 ].y + a_rB.m_aMatrixRows[ 1 ].y * a_rA.m_aMatrixRows[ 1 ].y;
    a_rOutTransform.m_vecTranslation.x   = a_rB.m_vecTranslation.x * a_rA.m_aMatrixRows[ 0 ].x + a_rB.m_vecTranslation.y * a_rA.m_aMatrixRows[ 1 ].x + a_rA.m_vecTranslation.x;
    a_rOutTransform.m_vecTranslation.y   = a_rB.m_vecTranslation.x * a_rA.m_aMatrixRows[ 0 ].y + a_rB.m_vecTranslation.y * a_rA.m_aMatrixRows[ 1 ].y + a_rA.m_vecTranslation.y;
}

PreMultiply()

void AGUI2Transform::PreMultiply

(

const AGUI2Transform &

a_rTransform

)

Definition at line 26 of file AGUI2Transform.cpp.

{
    TVector2 vecRot0 = m_aMatrixRows[ 0 ];
    TVector2 vecRot1 = m_aMatrixRows[ 1 ];
 
    m_aMatrixRows[ 0 ].x = a_rTransform.m_aMatrixRows[ 0 ].x * vecRot0.x + a_rTransform.m_aMatrixRows[ 0 ].y * vecRot1.x;
    m_aMatrixRows[ 0 ].y = a_rTransform.m_aMatrixRows[ 0 ].x * vecRot0.y + a_rTransform.m_aMatrixRows[ 0 ].y * vecRot1.y;
    m_aMatrixRows[ 1 ].x = a_rTransform.m_aMatrixRows[ 1 ].x * vecRot0.x + a_rTransform.m_aMatrixRows[ 1 ].y * vecRot1.x;
    m_aMatrixRows[ 1 ].y = a_rTransform.m_aMatrixRows[ 1 ].x * vecRot0.y + a_rTransform.m_aMatrixRows[ 1 ].y * vecRot1.y;
}

Rotate()

void AGUI2Transform::Rotate

(

TFLOAT

a_fAngle

)

Definition at line 12 of file AGUI2Transform.cpp.

{
    TFLOAT fSin, fCos;
    TMath::SinCos( a_fAngle, fSin, fCos );
 
    TVector2 vecRot0 = m_aMatrixRows[ 0 ];
    TVector2 vecRot1 = m_aMatrixRows[ 1 ];
 
    m_aMatrixRows[ 0 ].x = vecRot0.x * fCos + vecRot1.x * fSin;
    m_aMatrixRows[ 0 ].y = vecRot0.y * fCos + vecRot1.y * fSin;
    m_aMatrixRows[ 1 ].x = vecRot1.x * fCos - vecRot0.x * fSin;
    m_aMatrixRows[ 1 ].y = vecRot1.y * fCos - vecRot0.y * fSin;
}

Scale()

void AGUI2Transform::Scale	(	TFLOAT	a_fScaleX,
		TFLOAT	a_fScaleY )

Definition at line 37 of file AGUI2Transform.cpp.

{
    AGUI2Transform transform;
    transform.m_aMatrixRows[ 0 ] = { a_fScaleX, 0.0f };
    transform.m_aMatrixRows[ 1 ] = { 0.0f, a_fScaleY };
    transform.m_vecTranslation   = { 0.0f, 0.0f };
    PreMultiply( transform );
}

Set()

void AGUI2Transform::Set ( const Toshi::TVector2 & a_rcMatComp1, const Toshi::TVector2 & a_rcMatComp2, const Toshi::TVector2 & a_rcTranslation )

inlineconstexpr

Definition at line 35 of file AGUI2Transform.h.

    {
        m_aMatrixRows[ 0 ] = a_rcMatComp1;
        m_aMatrixRows[ 1 ] = a_rcMatComp2;
        m_vecTranslation   = a_rcTranslation;
    }

SetFromScale()

void AGUI2Transform::SetFromScale	(	TFLOAT	a_fScaleX,
		TFLOAT	a_fScaleY )

Definition at line 79 of file AGUI2Transform.cpp.

{
    SetIdentity();
    Scale( a_fScaleX, a_fScaleY );
}

SetIdentity()

void AGUI2Transform::SetIdentity ( )

inlineconstexpr

Definition at line 42 of file AGUI2Transform.h.

    {
        m_aMatrixRows[ 0 ] = Toshi::TVector2( 1.0f, 0.0f );
        m_aMatrixRows[ 1 ] = Toshi::TVector2( 0.0f, 1.0f );
        m_vecTranslation   = Toshi::TVector2::VEC_ZERO;
    }

SetScale()

void AGUI2Transform::SetScale	(	TFLOAT	a_fScaleX,
		TFLOAT	a_fScaleY )

Definition at line 71 of file AGUI2Transform.cpp.

{
    TVector2 vecTranslation = m_vecTranslation;
    SetIdentity();
    Scale( a_fScaleX, a_fScaleY );
    m_vecTranslation = vecTranslation;
}

SetTranslation() [1/2]

void AGUI2Transform::SetTranslation ( const Toshi::TVector2 & a_rcTranslation )

inlineconstexpr

Definition at line 62 of file AGUI2Transform.h.

    {
        m_vecTranslation = a_rcTranslation;
    }

SetTranslation() [2/2]

void AGUI2Transform::SetTranslation ( TFLOAT a_fX, TFLOAT a_fY )

inlineconstexpr

Definition at line 56 of file AGUI2Transform.h.

    {
        m_vecTranslation.x = a_fX;
        m_vecTranslation.y = a_fY;
    }

SetZero()

void AGUI2Transform::SetZero ( )

inlineconstexpr

Definition at line 49 of file AGUI2Transform.h.

    {
        m_aMatrixRows[ 0 ] = Toshi::TVector2::VEC_ZERO;
        m_aMatrixRows[ 1 ] = Toshi::TVector2::VEC_ZERO;
        m_vecTranslation   = Toshi::TVector2::VEC_ZERO;
    }

Transform()

void AGUI2Transform::Transform	(	Toshi::TVector2 &	a_rOutVec,
		const Toshi::TVector2 &	a_rTransformVec ) const

Definition at line 46 of file AGUI2Transform.cpp.

{
    a_rOutVec.x = m_vecTranslation.x + m_aMatrixRows[ 0 ].x * a_rTransformVec.x + m_aMatrixRows[ 1 ].x * a_rTransformVec.y;
    a_rOutVec.y = m_vecTranslation.y + m_aMatrixRows[ 0 ].y * a_rTransformVec.x + m_aMatrixRows[ 1 ].y * a_rTransformVec.y;
}

Member Data Documentation

m_aMatrixRows

Toshi::TVector2 AGUI2Transform::m_aMatrixRows[2]

Definition at line 73 of file AGUI2Transform.h.

m_vecTranslation

Toshi::TVector2 AGUI2Transform::m_vecTranslation

Definition at line 74 of file AGUI2Transform.h.

---

The documentation for this class was generated from the following files:

• D:/_dev/OpenBarnyard/Source/OpenBarnyard/Source/GUI/AGUI2Transform.h
• D:/_dev/OpenBarnyard/Source/OpenBarnyard/Source/GUI/AGUI2Transform.cpp