AGUI2Transform.h

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#pragma once
#include <Math/TVector2.h>
 
class AGUI2Transform
{
public:
    enum TUninitialised
    {
        Uninitialised
    };
 
public:
    // constructors/destructor
    constexpr AGUI2Transform()
    {
        SetIdentity();
    }
 
    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;
 
    // Sets scale preserving translation
    void SetScale( TFLOAT a_fScaleX, TFLOAT a_fScaleY );
 
    // Sets scale and resets translation
    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 )
    {
        m_aMatrixRows[ 0 ] = a_rcMatComp1;
        m_aMatrixRows[ 1 ] = a_rcMatComp2;
        m_vecTranslation   = a_rcTranslation;
    }
 
    constexpr void SetIdentity()
    {
        m_aMatrixRows[ 0 ] = Toshi::TVector2( 1.0f, 0.0f );
        m_aMatrixRows[ 1 ] = Toshi::TVector2( 0.0f, 1.0f );
        m_vecTranslation   = Toshi::TVector2::VEC_ZERO;
    }
 
    constexpr void SetZero()
    {
        m_aMatrixRows[ 0 ] = Toshi::TVector2::VEC_ZERO;
        m_aMatrixRows[ 1 ] = Toshi::TVector2::VEC_ZERO;
        m_vecTranslation   = Toshi::TVector2::VEC_ZERO;
    }
 
    constexpr void SetTranslation( TFLOAT a_fX, TFLOAT a_fY )
    {
        m_vecTranslation.x = a_fX;
        m_vecTranslation.y = a_fY;
    }
 
    constexpr void SetTranslation( const Toshi::TVector2& a_rcTranslation )
    {
        m_vecTranslation = a_rcTranslation;
    }
 
    constexpr const Toshi::TVector2& GetTranslation() const { return m_vecTranslation; }
 
public:
    static void Multiply( AGUI2Transform& a_rOutTransform, const AGUI2Transform& a_rA, const AGUI2Transform& a_rB );
 
public:
    Toshi::TVector2 m_aMatrixRows[ 2 ];
    Toshi::TVector2 m_vecTranslation;
};