TransferFunctionCtrlCanvas Class Reference

Class managing the visual representation of the transfer function/histrogram/color range. More...

#include <trafu_ctrl.h>

Collaboration diagram for TransferFunctionCtrlCanvas:

List of all members.

Public Member Functions

TransferFunctionCtrlCanvas ()

Empty constructor.

TransferFunctionCtrlCanvas (wxWindow *parent, wxWindowID id, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=0)

Main constructor.

~TransferFunctionCtrlCanvas ()

Destructor.

void SetTraFuDataPointer (TraFuData *data)

This function provides the TransferFunctionCtrlCanvas with access to the Transfer Function Data storage.

bool Create (wxWindow *parent, wxWindowID id, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxSUNKEN_BORDER)

Seperate creation method for 2-step class initialization.

wxSize DoGetBestSize () const

Function to the wxWidgets-sizer system what's the best size of the canvas.

int GetCanvasHeight ()

Return height of canvas that is exclusively reserved for drawing the transfer function points.

int GetCanvasWidth ()

Return width of canvas that is exclusively reserved for drawing the transfer function points.

wxSize GetCanvasSize () const

Return size of canvas that is exclusively reserved for drawing the transfer function points.

void SetHistogramData (const HistogramData *histogramdata)

User provided histogram data for drawing the density histogram.

Protected Member Functions

Event handlers

void OnPaint (wxPaintEvent &event)

void OnMouseEvent (wxMouseEvent &event)

void OnSize (wxSizeEvent &event)

Private Member Functions

void SetMoving (Mapping_point_iterator_t target, bool holding)

Flag the specified point as currently moving.

void Init ()

Seperate Init method for 2-step class initialization.

void NotifyChange ()

Send notification of a change in the transfer function.

void SetPointPosition (Mapping_point_iterator_t point, const wxPoint &pos)

Move the representation of the provided point to provided position on the canvas.

Mapping_point_iterator_t GetHitPoint (const wxPoint &pos)

Return the transfer function point that's representation includes provided canvas position (if any).

bool PointContains (Mapping_point_iterator_t point, const wxPoint &pos)

Determine if a specified position (on the canvas) is within the representation of the provided point.

wxPoint GetPosition (const Mapping_point_iterator_t &point)

Return the position of a provided point.

void SetPosition (Mapping_point_iterator_t &point, const wxPoint &new_pos)

Set the position of a provided point.

void SetColour (Mapping_point_t &point, const wxColor &new_color)

Set the color of a provided point (in wxWidgets own color structure).

wxColor GetColour (Mapping_point_t &point)

Return the color of a provided point (in wxWidgets own color structure).

void SetRGB (Mapping_point_iterator_t &point, const tfRGB &colour)

Set the color of a provided point.

tfRGB GetRGB (Mapping_point_iterator_t &point)

Return the color of a provided point.

float Density (const wxPoint &pos)

Returns the density value corresponding with the given position's x coordinate.

float Opacity (const wxPoint &pos)

Returns the opacity value corresponding with the given position's y coordinate.

void AddNewPoint (const wxPoint &pos)

Show a color dialog and add a point with the choosen colour at the provided position.

void AddNewPoint (const wxPoint &pos, const wxColour &colour)

Add a point with the provided colour at the provided position.

void DeletePoint (Mapping_point_iterator_t target)

Delete the provided point.

void DrawPoints (wxDC *dc)

Draw all points of the transfer function.

void DrawHist (wxDC *dc)

Draw the density histogram.

void DrawRange (wxDC *dc)

Draw the transfer function's color range.

Private Attributes

int m_colour_range_height

Height (in pixel) that is used for drawing the functions color range.

int m_button_radius

Radius (in pixel) of a transfer function point representation.

TraFuData * m_points

Pointer to class responsible for managing the transfer function.

Mapping_point_iterator_t m_active_point

Iterator containing the point that is currently set as moving (if any).

const HistogramData * m_hist_data

Object holding histogram information of the currently loaded dataset.

Detailed Description

Class managing the visual representation of the transfer function/histrogram/color range.

Definition at line 20 of file trafu_ctrl.h.

Constructor & Destructor Documentation

TransferFunctionCtrlCanvas::TransferFunctionCtrlCanvas ( ) [inline]

Empty constructor.

Definition at line 27 of file trafu_ctrl.h.

References Init().

TransferFunctionCtrlCanvas::TransferFunctionCtrlCanvas	(	wxWindow *	parent,
		wxWindowID	id,
		const wxPoint &	pos = `wxDefaultPosition`,
		const wxSize &	size = `wxDefaultSize`,
		long	style = `0`
	)			`[inline]`

Main constructor.

Definition at line 30 of file trafu_ctrl.h.

References Create(), and Init().

TransferFunctionCtrlCanvas::~TransferFunctionCtrlCanvas ( ) [inline]

Destructor.

Definition at line 41 of file trafu_ctrl.h.

Member Function Documentation

void TransferFunctionCtrlCanvas::SetTraFuDataPointer ( TraFuData * data )

This function provides the TransferFunctionCtrlCanvas with access to the Transfer Function Data storage.

Definition at line 50 of file trafu_ctrl.cpp.

References TraFuData::end(), m_active_point, and m_points.

bool TransferFunctionCtrlCanvas::Create	(	wxWindow *	parent,
		wxWindowID	id,
		const wxPoint &	pos = `wxDefaultPosition`,
		const wxSize &	size = `wxDefaultSize`,
		long	style = `wxSUNKEN_BORDER`
	)

Seperate creation method for 2-step class initialization.

Definition at line 20 of file trafu_ctrl.cpp.

Referenced by TransferFunctionCtrlCanvas().

wxSize TransferFunctionCtrlCanvas::DoGetBestSize ( ) const [inline]

Function to the wxWidgets-sizer system what's the best size of the canvas.

Definition at line 56 of file trafu_ctrl.h.

int TransferFunctionCtrlCanvas::GetCanvasHeight ( ) [inline]

Return height of canvas that is exclusively reserved for drawing the transfer function points.

Definition at line 59 of file trafu_ctrl.h.

References m_colour_range_height.

Referenced by DrawHist(), GetPosition(), OnMouseEvent(), Opacity(), and SetPointPosition().

int TransferFunctionCtrlCanvas::GetCanvasWidth ( ) [inline]

Return width of canvas that is exclusively reserved for drawing the transfer function points.

Definition at line 62 of file trafu_ctrl.h.

Referenced by Density(), DrawHist(), DrawRange(), GetPosition(), and SetPointPosition().

wxSize TransferFunctionCtrlCanvas::GetCanvasSize ( ) const [inline]

Return size of canvas that is exclusively reserved for drawing the transfer function points.

Definition at line 65 of file trafu_ctrl.h.

References m_colour_range_height.

void TransferFunctionCtrlCanvas::SetHistogramData ( const HistogramData * histogramdata )

User provided histogram data for drawing the density histogram.

Definition at line 36 of file trafu_ctrl.cpp.

References m_hist_data.

void TransferFunctionCtrlCanvas::SetMoving	(	Mapping_point_iterator_t	target,
		bool	holding
	)			`[private]`

Flag the specified point as currently moving.

Definition at line 252 of file trafu_ctrl.cpp.

References TraFuData::end(), m_active_point, and m_points.

Referenced by OnMouseEvent().

void TransferFunctionCtrlCanvas::Init ( ) [private]

Seperate Init method for 2-step class initialization.

Definition at line 41 of file trafu_ctrl.cpp.

References m_button_radius, m_colour_range_height, and m_points.

Referenced by TransferFunctionCtrlCanvas().

void TransferFunctionCtrlCanvas::NotifyChange ( ) [private]

Send notification of a change in the transfer function.

Definition at line 284 of file trafu_ctrl.cpp.

Referenced by AddNewPoint(), DeletePoint(), OnMouseEvent(), and SetPointPosition().

void TransferFunctionCtrlCanvas::SetPointPosition	(	Mapping_point_iterator_t	point,
		const wxPoint &	pos
	)			`[private]`

Move the representation of the provided point to provided position on the canvas.

Definition at line 259 of file trafu_ctrl.cpp.

References GetCanvasHeight(), GetCanvasWidth(), NotifyChange(), SetPosition(), TFP_END, TFP_NONE, and TFP_START.

Referenced by OnMouseEvent().

Mapping_point_iterator_t TransferFunctionCtrlCanvas::GetHitPoint ( const wxPoint & pos ) [private]

Return the transfer function point that's representation includes provided canvas position (if any).

Definition at line 168 of file trafu_ctrl.cpp.

References TraFuData::begin(), TraFuData::end(), m_points, and PointContains().

Referenced by OnMouseEvent().

bool TransferFunctionCtrlCanvas::PointContains	(	Mapping_point_iterator_t	point,
		const wxPoint &	pos
	)			`[private]`

Determine if a specified position (on the canvas) is within the representation of the provided point.

Definition at line 160 of file trafu_ctrl.cpp.

References GetPosition().

Referenced by GetHitPoint().

wxPoint TransferFunctionCtrlCanvas::GetPosition ( const Mapping_point_iterator_t & point ) [inline, private]

Return the position of a provided point.

Definition at line 90 of file trafu_ctrl.h.

References GetCanvasHeight(), and GetCanvasWidth().

Referenced by DrawPoints(), OnPaint(), and PointContains().

void TransferFunctionCtrlCanvas::SetPosition	(	Mapping_point_iterator_t &	point,
		const wxPoint &	new_pos
	)			`[inline, private]`

Set the position of a provided point.

Definition at line 96 of file trafu_ctrl.h.

References Density(), and Opacity().

Referenced by SetPointPosition().

void TransferFunctionCtrlCanvas::SetColour	(	Mapping_point_t &	point,
		const wxColor &	new_color
	)			`[inline, private]`

Set the color of a provided point (in wxWidgets own color structure).

Definition at line 103 of file trafu_ctrl.h.

References Mapping_data::m_colour.

Referenced by OnMouseEvent().

wxColor TransferFunctionCtrlCanvas::GetColour ( Mapping_point_t & point ) [inline, private]

Return the color of a provided point (in wxWidgets own color structure).

Definition at line 109 of file trafu_ctrl.h.

References tfRGB::blue, tfRGB::green, Mapping_data::m_colour, and tfRGB::red.

Referenced by DrawPoints().

void TransferFunctionCtrlCanvas::SetRGB	(	Mapping_point_iterator_t &	point,
		const tfRGB &	colour
	)			`[inline, private]`

Set the color of a provided point.

Definition at line 115 of file trafu_ctrl.h.

tfRGB TransferFunctionCtrlCanvas::GetRGB ( Mapping_point_iterator_t & point ) [inline, private]

Return the color of a provided point.

Definition at line 121 of file trafu_ctrl.h.

float TransferFunctionCtrlCanvas::Density ( const wxPoint & pos ) [inline, private]

Returns the density value corresponding with the given position's x coordinate.

Definition at line 127 of file trafu_ctrl.h.

References GetCanvasWidth().

Referenced by AddNewPoint(), and SetPosition().

float TransferFunctionCtrlCanvas::Opacity ( const wxPoint & pos ) [inline, private]

Returns the opacity value corresponding with the given position's y coordinate.

Definition at line 133 of file trafu_ctrl.h.

References GetCanvasHeight().

Referenced by AddNewPoint(), and SetPosition().

void TransferFunctionCtrlCanvas::AddNewPoint ( const wxPoint & pos ) [private]

Show a color dialog and add a point with the choosen colour at the provided position.

Definition at line 232 of file trafu_ctrl.cpp.

References TraFuData::Add(), Density(), m_points, NotifyChange(), Opacity(), and TraFuData::Sort().

Referenced by OnMouseEvent().

void TransferFunctionCtrlCanvas::AddNewPoint	(	const wxPoint &	pos,
		const wxColour &	colour
	)			`[private]`

Add a point with the provided colour at the provided position.

Definition at line 245 of file trafu_ctrl.cpp.

References TraFuData::Add(), Density(), m_points, NotifyChange(), and Opacity().

void TransferFunctionCtrlCanvas::DeletePoint ( Mapping_point_iterator_t target ) [private]

Delete the provided point.

Definition at line 221 of file trafu_ctrl.cpp.

References TraFuData::Delete(), m_points, NotifyChange(), and TFP_NONE.

Referenced by OnMouseEvent().

void TransferFunctionCtrlCanvas::DrawPoints ( wxDC * dc ) [private]

Draw all points of the transfer function.

Definition at line 100 of file trafu_ctrl.cpp.

References TraFuData::begin(), TraFuData::end(), GetColour(), GetPosition(), and m_points.

Referenced by OnPaint().

void TransferFunctionCtrlCanvas::DrawHist ( wxDC * dc ) [private]

Draw the density histogram.

Definition at line 119 of file trafu_ctrl.cpp.

References GetCanvasHeight(), GetCanvasWidth(), m_hist_data, HistogramData::ResampleData(), and x.

Referenced by OnPaint().

void TransferFunctionCtrlCanvas::DrawRange ( wxDC * dc ) [private]

Draw the transfer function's color range.

Definition at line 141 of file trafu_ctrl.cpp.

References TraFuData::createDensityVector(), GetCanvasWidth(), m_colour_range_height, and m_points.

Referenced by OnPaint().

void TransferFunctionCtrlCanvas::OnPaint ( wxPaintEvent & event ) [protected]

Definition at line 56 of file trafu_ctrl.cpp.

References TraFuData::begin(), DrawHist(), DrawPoints(), DrawRange(), TraFuData::end(), GetPosition(), m_active_point, m_points, TraFuData::Sort(), x, and y.

void TransferFunctionCtrlCanvas::OnMouseEvent ( wxMouseEvent & event ) [protected]

Definition at line 176 of file trafu_ctrl.cpp.

References AddNewPoint(), DeletePoint(), TraFuData::end(), GetCanvasHeight(), GetHitPoint(), m_active_point, m_points, NotifyChange(), SetColour(), SetMoving(), and SetPointPosition().

void TransferFunctionCtrlCanvas::OnSize ( wxSizeEvent & event ) [protected]

Definition at line 16 of file trafu_ctrl.cpp.

Member Data Documentation

int TransferFunctionCtrlCanvas::m_colour_range_height [private]

Height (in pixel) that is used for drawing the functions color range.

Definition at line 156 of file trafu_ctrl.h.

Referenced by DrawRange(), GetCanvasHeight(), GetCanvasSize(), and Init().

int TransferFunctionCtrlCanvas::m_button_radius [private]

Radius (in pixel) of a transfer function point representation.

Definition at line 157 of file trafu_ctrl.h.

Referenced by Init().

TraFuData* TransferFunctionCtrlCanvas::m_points [private]

Pointer to class responsible for managing the transfer function.

Definition at line 158 of file trafu_ctrl.h.

Referenced by AddNewPoint(), DeletePoint(), DrawPoints(), DrawRange(), GetHitPoint(), Init(), OnMouseEvent(), OnPaint(), SetMoving(), and SetTraFuDataPointer().

Mapping_point_iterator_t TransferFunctionCtrlCanvas::m_active_point [private]

Iterator containing the point that is currently set as moving (if any).

Definition at line 159 of file trafu_ctrl.h.

Referenced by OnMouseEvent(), OnPaint(), SetMoving(), and SetTraFuDataPointer().

const HistogramData* TransferFunctionCtrlCanvas::m_hist_data [private]

Object holding histogram information of the currently loaded dataset.

Definition at line 160 of file trafu_ctrl.h.

Referenced by DrawHist(), and SetHistogramData().

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


Public Member Functions
	TransferFunctionCtrlCanvas ()
	Empty constructor.
	TransferFunctionCtrlCanvas (wxWindow *parent, wxWindowID id, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=0)
	Main constructor.
	~TransferFunctionCtrlCanvas ()
	Destructor.
void	SetTraFuDataPointer (TraFuData *data)
	This function provides the TransferFunctionCtrlCanvas with access to the Transfer Function Data storage.
bool	Create (wxWindow *parent, wxWindowID id, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxSUNKEN_BORDER)
	Seperate creation method for 2-step class initialization.
wxSize	DoGetBestSize () const
	Function to the wxWidgets-sizer system what's the best size of the canvas.
int	GetCanvasHeight ()
	Return height of canvas that is exclusively reserved for drawing the transfer function points.
int	GetCanvasWidth ()
	Return width of canvas that is exclusively reserved for drawing the transfer function points.
wxSize	GetCanvasSize () const
	Return size of canvas that is exclusively reserved for drawing the transfer function points.
void	SetHistogramData (const HistogramData *histogramdata)
	User provided histogram data for drawing the density histogram.
Protected Member Functions
Event handlers
void	OnPaint (wxPaintEvent &event)
void	OnMouseEvent (wxMouseEvent &event)
void	OnSize (wxSizeEvent &event)
Private Member Functions
void	SetMoving (Mapping_point_iterator_t target, bool holding)
	Flag the specified point as currently moving.
void	Init ()
	Seperate Init method for 2-step class initialization.
void	NotifyChange ()
	Send notification of a change in the transfer function.
void	SetPointPosition (Mapping_point_iterator_t point, const wxPoint &pos)
	Move the representation of the provided point to provided position on the canvas.
Mapping_point_iterator_t	GetHitPoint (const wxPoint &pos)
	Return the transfer function point that's representation includes provided canvas position (if any).
bool	PointContains (Mapping_point_iterator_t point, const wxPoint &pos)
	Determine if a specified position (on the canvas) is within the representation of the provided point.
wxPoint	GetPosition (const Mapping_point_iterator_t &point)
	Return the position of a provided point.
void	SetPosition (Mapping_point_iterator_t &point, const wxPoint &new_pos)
	Set the position of a provided point.
void	SetColour (Mapping_point_t &point, const wxColor &new_color)
	Set the color of a provided point (in wxWidgets own color structure).
wxColor	GetColour (Mapping_point_t &point)
	Return the color of a provided point (in wxWidgets own color structure).
void	SetRGB (Mapping_point_iterator_t &point, const tfRGB &colour)
	Set the color of a provided point.
tfRGB	GetRGB (Mapping_point_iterator_t &point)
	Return the color of a provided point.
float	Density (const wxPoint &pos)
	Returns the density value corresponding with the given position's x coordinate.
float	Opacity (const wxPoint &pos)
	Returns the opacity value corresponding with the given position's y coordinate.
void	AddNewPoint (const wxPoint &pos)
	Show a color dialog and add a point with the choosen colour at the provided position.
void	AddNewPoint (const wxPoint &pos, const wxColour &colour)
	Add a point with the provided colour at the provided position.
void	DeletePoint (Mapping_point_iterator_t target)
	Delete the provided point.
void	DrawPoints (wxDC *dc)
	Draw all points of the transfer function.
void	DrawHist (wxDC *dc)
	Draw the density histogram.
void	DrawRange (wxDC *dc)
	Draw the transfer function's color range.
Private Attributes
int	m_colour_range_height
	Height (in pixel) that is used for drawing the functions color range.
int	m_button_radius
	Radius (in pixel) of a transfer function point representation.
TraFuData *	m_points
	Pointer to class responsible for managing the transfer function.
Mapping_point_iterator_t	m_active_point
	Iterator containing the point that is currently set as moving (if any).
const HistogramData *	m_hist_data
	Object holding histogram information of the currently loaded dataset.