IncrementalEngine::Transformable Class Reference

#include <Transformable.h>

Inheritance diagram for IncrementalEngine::Transformable:

Public Member Functions
	Transformable ()
virtual void	SetPosition (float x, float y)
virtual void	SetPosition (const D3DXVECTOR2 &position)
virtual void	SetScale (float factorX, float factorY)
virtual void	SetScale (const D3DXVECTOR2 &factors)
virtual void	SetOrigin (float x, float y)
virtual void	SetOrigin (const D3DXVECTOR2 &origin)
virtual void	SetRotation (float angle)
virtual const D3DXVECTOR2 &	GetPosition () const
virtual float	GetRotation () const
virtual const D3DXVECTOR2 &	GetScale () const
virtual const D3DXVECTOR2 &	GetOrigin () const
void	Move (float offsetX, float offsetY)
void	Move (const D3DXVECTOR2 &offset)
void	Rotate (float angle)
void	Scale (float factorX, float factorY)
void	Scale (const D3DXVECTOR2 &factor)
const Transform &	GetTransform () const
const Transform &	GetInverseTransform () const

Protected Attributes
bool	_transformNeedUpdate

Private Attributes
D3DXVECTOR2	_origin
D3DXVECTOR2	_position
D3DXVECTOR2	_scale
float	_rotation
Transform	_transform
Transform	_inverseTransform
bool	_inverseTransformNeedUpdate

Detailed Description

Definition at line 37 of file Transformable.h.

Constructor & Destructor Documentation

Transformable()

IncrementalEngine::Transformable::Transformable

(

)

Definition at line 34 of file Transformable.cpp.

                                 :
        _origin(0, 0),
        _position(0, 0),
        _rotation(0),
        _scale(1, 1),
        _transform(),
        _transformNeedUpdate(true),
        _inverseTransform(),
        _inverseTransformNeedUpdate(true)
    {
    }

Member Function Documentation

GetInverseTransform()

const Transform & IncrementalEngine::Transformable::GetInverseTransform

(

)

const

Definition at line 166 of file Transformable.cpp.

    {
        if (_inverseTransformNeedUpdate)
        {
            _inverseTransform = GetTransform().GetInverse();
            _inverseTransformNeedUpdate = false;
        }
 
        return _inverseTransform;
    }

GetOrigin()

const D3DXVECTOR2 & IncrementalEngine::Transformable::GetOrigin ( ) const

virtual

Definition at line 110 of file Transformable.cpp.

    {
        return _origin;
    }

GetPosition()

const D3DXVECTOR2 & IncrementalEngine::Transformable::GetPosition ( ) const

virtual

Reimplemented in IncrementalEngine::Actor.

Definition at line 95 of file Transformable.cpp.

    {
        return _position;
    }

GetRotation()

float IncrementalEngine::Transformable::GetRotation ( ) const

virtual

Definition at line 100 of file Transformable.cpp.

    {
        return _rotation;
    }

GetScale()

const D3DXVECTOR2 & IncrementalEngine::Transformable::GetScale ( ) const

virtual

Definition at line 105 of file Transformable.cpp.

    {
        return _scale;
    }

GetTransform()

const Transform & IncrementalEngine::Transformable::GetTransform

(

)

const

Definition at line 140 of file Transformable.cpp.

    {
        if (_transformNeedUpdate)
        {
            float angle  = -_rotation * 3.141592654f / 180.f;
            float cosine =  static_cast<float>(std::cos(angle));
            float sine   =  static_cast<float>(std::sin(angle));
            float sxc    =  _scale.x * cosine;
            float syc    =  _scale.y * cosine;
            float sxs    =  _scale.x * sine;
            float sys    =  _scale.y * sine;
            float tx     = -_origin.x * sxc - _origin.y * sys + _position.x;
            float ty     =  _origin.x * sxs - _origin.y * syc + _position.y;
            
            _transform = Transform(
                sxc, sys, tx,
               -sxs, syc, ty,
                0.f, 0.f, 1.f
            );
 
            _transformNeedUpdate = false;
        }
 
        return _transform;
    }

Move() [1/2]

void IncrementalEngine::Transformable::Move

(

const D3DXVECTOR2 &

offset

)

Definition at line 120 of file Transformable.cpp.

    {
        SetPosition(_position.x + offset.x, _position.y + offset.y);
    }

Move() [2/2]

void IncrementalEngine::Transformable::Move	(	float	offsetX,
		float	offsetY
	)

Definition at line 115 of file Transformable.cpp.

    {
        SetPosition(_position.x + offsetX, _position.y + offsetY);
    }

Rotate()

void IncrementalEngine::Transformable::Rotate

(

float

angle

)

Definition at line 125 of file Transformable.cpp.

    {
        SetRotation(_rotation + angle);
    }

Scale() [1/2]

void IncrementalEngine::Transformable::Scale

(

const D3DXVECTOR2 &

factor

)

Definition at line 135 of file Transformable.cpp.

    {
        SetScale(_scale.x * factor.x, _scale.y * factor.y);
    }

Scale() [2/2]

void IncrementalEngine::Transformable::Scale	(	float	factorX,
		float	factorY
	)

Definition at line 130 of file Transformable.cpp.

    {
        SetScale(_scale.x * factorX, _scale.y * factorY);
    }

SetOrigin() [1/2]

void IncrementalEngine::Transformable::SetOrigin ( const D3DXVECTOR2 &  origin )

virtual

Definition at line 90 of file Transformable.cpp.

    {
        SetOrigin(origin.x, origin.y);
    }

SetOrigin() [2/2]

void IncrementalEngine::Transformable::SetOrigin ( float  x, float  y  )

virtual

Definition at line 82 of file Transformable.cpp.

    {
        _origin.x = x;
        _origin.y = y;
        _transformNeedUpdate = true;
        _inverseTransformNeedUpdate = true;
    }

SetPosition() [1/2]

void IncrementalEngine::Transformable::SetPosition ( const D3DXVECTOR2 &  position )

virtual

Reimplemented in IncrementalEngine::Actor.

Definition at line 54 of file Transformable.cpp.

    {
        SetPosition(position.x, position.y);
    }

SetPosition() [2/2]

void IncrementalEngine::Transformable::SetPosition ( float  x, float  y  )

virtual

Reimplemented in IncrementalEngine::Actor.

Definition at line 46 of file Transformable.cpp.

    {
        _position.x = x;
        _position.y = y;
        _transformNeedUpdate = true;
        _inverseTransformNeedUpdate = true;
    }

SetRotation()

void IncrementalEngine::Transformable::SetRotation ( float  angle )

virtual

Definition at line 59 of file Transformable.cpp.

    {
        _rotation = static_cast<float>(fmod(angle, 360));
        if (_rotation < 0)
            _rotation += 360.f;
 
        _transformNeedUpdate = true;
        _inverseTransformNeedUpdate = true;
    }

SetScale() [1/2]

void IncrementalEngine::Transformable::SetScale ( const D3DXVECTOR2 &  factors )

virtual

Definition at line 77 of file Transformable.cpp.

    {
        SetScale(factors.x, factors.y);
    }

SetScale() [2/2]

void IncrementalEngine::Transformable::SetScale ( float  factorX, float  factorY  )

virtual

Definition at line 69 of file Transformable.cpp.

    {
        _scale.x = factorX;
        _scale.y = factorY;
        _transformNeedUpdate = true;
        _inverseTransformNeedUpdate = true;
    }

Member Data Documentation

_inverseTransform

Transform IncrementalEngine::Transformable::_inverseTransform

mutableprivate

Definition at line 76 of file Transformable.h.

_inverseTransformNeedUpdate

bool IncrementalEngine::Transformable::_inverseTransformNeedUpdate

mutableprivate

Definition at line 77 of file Transformable.h.

_origin

D3DXVECTOR2 IncrementalEngine::Transformable::_origin

private

Definition at line 70 of file Transformable.h.

_position

D3DXVECTOR2 IncrementalEngine::Transformable::_position

private

Definition at line 71 of file Transformable.h.

_rotation

float IncrementalEngine::Transformable::_rotation

private

Definition at line 73 of file Transformable.h.

_scale

D3DXVECTOR2 IncrementalEngine::Transformable::_scale

private

Definition at line 72 of file Transformable.h.

_transform

Transform IncrementalEngine::Transformable::_transform

mutableprivate

Definition at line 75 of file Transformable.h.

_transformNeedUpdate

bool IncrementalEngine::Transformable::_transformNeedUpdate

mutableprotected

Definition at line 67 of file Transformable.h.