A control point for the alpha function. More...

#include <WTransferFunctionPoint.h>

Inheritance diagram for WTransferFunctionPoint:

Collaboration diagram for WTransferFunctionPoint:

Public Types
typedef QGraphicsItem	BaseClass
	type of the base class More...

Public Member Functions
	WTransferFunctionPoint (WTransferFunctionWidget *parent=NULL)
	Default constructor. More...

virtual	~WTransferFunctionPoint ()
	Default destructor. More...

void	setLeft (WTransferFunctionPoint *left)
	Set point to the left. More...

WTransferFunctionPoint *	getLeft () const
	Get point to the left. More...

void	setRight (WTransferFunctionPoint *right)
	Set point to the right. More...

WTransferFunctionPoint *	getRight () const
	Get point to the right. More...

void	setLine (WTransferFunctionLine *line)
	Set the line pointing to the right. More...

WTransferFunctionLine *	getLine () const
	The current line if there is one. More...

QRectF	boundingRect () const
	Get the bounding rectangle. More...

virtual void	paint (QPainter painter, const QStyleOptionGraphicsItem option, QWidget *)
	Paint the object. More...

virtual void	setPos (QPointF point)
	Overloaded form base class for debugging. More...

Protected Member Functions
void	clampToRectangle (QPointF *const pos, const QRectF &rectangle) const
	Helper to itemChange. More...

void	clampToLeftAndRight (QPointF *const pos) const
	Helper to itemChange. More...

QVariant	itemChange (GraphicsItemChange change, const QVariant &value)
	Handle item changes and change requests. More...

void	mousePressEvent (QGraphicsSceneMouseEvent *event)
	Handle mouse press events for selections and highlighting. More...

Private Attributes
double	radius
	the radius of the object More...

WTransferFunctionPoint *	left
	pointer to point to the left More...

WTransferFunctionPoint *	right
	pointer to point to the right More...

WTransferFunctionLine *	line
	pointer to line to the right More...

WTransferFunctionWidget *	_parent
	reference to the parent widget More...

Detailed Description

A control point for the alpha function.

Internals: The point has pointers to its left and right neighbors (double-linked list) and a pointer to the line connecting this point to the next point to the right.

Definition at line 40 of file WTransferFunctionPoint.h.

Member Typedef Documentation

◆ BaseClass

typedef QGraphicsItem WTransferFunctionPoint::BaseClass

type of the base class

Definition at line 44 of file WTransferFunctionPoint.h.

Constructor & Destructor Documentation

◆ WTransferFunctionPoint()

WTransferFunctionPoint::WTransferFunctionPoint ( WTransferFunctionWidget * parent = NULL )

explicit

Default constructor.

Parameters

parent pointer to parent widget

Definition at line 35 of file WTransferFunctionPoint.cpp.

◆ ~WTransferFunctionPoint()

WTransferFunctionPoint::~WTransferFunctionPoint ( )

virtual

Default destructor.

Definition at line 45 of file WTransferFunctionPoint.cpp.

Member Function Documentation

◆ boundingRect()

QRectF WTransferFunctionPoint::boundingRect ( ) const

Get the bounding rectangle.

Returns: the bounding rect of this object

Definition at line 80 of file WTransferFunctionPoint.cpp.

References radius.

◆ clampToLeftAndRight()

void WTransferFunctionPoint::clampToLeftAndRight ( QPointF *const pos ) const

protected

Helper to itemChange.

Parameters

pos	the position that is clamped between the left and right neighbors

Definition at line 162 of file WTransferFunctionPoint.cpp.

References left, and right.

Referenced by itemChange().

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◆ clampToRectangle()

void WTransferFunctionPoint::clampToRectangle	(	QPointF *const	pos,
		const QRectF &	rectangle
	)		const

protected

Helper to itemChange.

Parameters

pos	position that is clamped to rectangle
rectangle	the rectangle

Definition at line 181 of file WTransferFunctionPoint.cpp.

Referenced by itemChange().

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◆ getLeft()

WTransferFunctionPoint * WTransferFunctionPoint::getLeft ( ) const

Get point to the left.

Returns: point to the left

Definition at line 65 of file WTransferFunctionPoint.cpp.

References left.

Referenced by WTransferFunctionWidget::keyPressEvent().

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◆ getLine()

WTransferFunctionLine * WTransferFunctionPoint::getLine ( ) const

The current line if there is one.

NULL if not.

Returns: the line if any has been set (i.e., may be 0)

Definition at line 54 of file WTransferFunctionPoint.cpp.

References line.

Referenced by WTransferFunctionWidget::clearTransferFunction(), WTransferFunctionWidget::insertPoint(), and WTransferFunctionWidget::keyPressEvent().

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◆ getRight()

WTransferFunctionPoint * WTransferFunctionPoint::getRight ( ) const

Get point to the right.

Returns: point to the right

Definition at line 75 of file WTransferFunctionPoint.cpp.

References right.

Referenced by WTransferFunctionWidget::clearTransferFunction(), WTransferFunctionWidget::findCPointOnLeft(), WTransferFunctionWidget::findPointOnLeft(), WTransferFunctionWidget::insertPoint(), WTransferFunctionWidget::keyPressEvent(), WTransferFunctionWidget::sample1DTransferFunction(), and WTransferFunctionWidget::updateTransferFunction().

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◆ itemChange()

QVariant WTransferFunctionPoint::itemChange	(	GraphicsItemChange	change,
		const QVariant &	value
	)

protected

Handle item changes and change requests.

Parameters

change	the proposed change
value	the proposed value

Returns: the requested change

Definition at line 110 of file WTransferFunctionPoint.cpp.

References _parent, clampToLeftAndRight(), clampToRectangle(), WTransferFunctionWidget::dataChanged(), left, and right.

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◆ mousePressEvent()

void WTransferFunctionPoint::mousePressEvent ( QGraphicsSceneMouseEvent * event )

protected

Handle mouse press events for selections and highlighting.

Parameters

event the handled event

Definition at line 154 of file WTransferFunctionPoint.cpp.

References _parent, and WTransferFunctionWidget::setCurrent().

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◆ paint()

void WTransferFunctionPoint::paint	(	QPainter *	painter,
		const QStyleOptionGraphicsItem *	option,
		QWidget *
	)

virtual

Paint the object.

Parameters

painter	the painter to use
option	the options for painting

Definition at line 87 of file WTransferFunctionPoint.cpp.

References radius.

◆ setLeft()

void WTransferFunctionPoint::setLeft ( WTransferFunctionPoint * left )

Set point to the left.

Parameters

left	new point to the left

Definition at line 60 of file WTransferFunctionPoint.cpp.

References left.

Referenced by WTransferFunctionWidget::insertPoint(), and WTransferFunctionWidget::keyPressEvent().

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◆ setLine()

void WTransferFunctionPoint::setLine ( WTransferFunctionLine * line )

Set the line pointing to the right.

Parameters

line	the new line

Definition at line 49 of file WTransferFunctionPoint.cpp.

References line.

Referenced by WTransferFunctionWidget::insertPoint().

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◆ setPos()

void WTransferFunctionPoint::setPos ( QPointF point )

virtual

Overloaded form base class for debugging.

Parameters

point the point that should be set

Definition at line 201 of file WTransferFunctionPoint.cpp.

Referenced by WTransferFunctionWidget::insertPoint().

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◆ setRight()

void WTransferFunctionPoint::setRight ( WTransferFunctionPoint * right )

Set point to the right.

Parameters

right new point to the right

Definition at line 70 of file WTransferFunctionPoint.cpp.

References right.

Referenced by WTransferFunctionWidget::insertPoint(), and WTransferFunctionWidget::keyPressEvent().

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Member Data Documentation

◆ _parent

WTransferFunctionWidget* WTransferFunctionPoint::_parent

private

reference to the parent widget

Definition at line 167 of file WTransferFunctionPoint.h.

Referenced by itemChange(), and mousePressEvent().

◆ left

WTransferFunctionPoint* WTransferFunctionPoint::left

private

pointer to point to the left

Definition at line 159 of file WTransferFunctionPoint.h.

Referenced by clampToLeftAndRight(), getLeft(), itemChange(), and setLeft().

◆ line

WTransferFunctionLine* WTransferFunctionPoint::line

private

pointer to line to the right

Definition at line 164 of file WTransferFunctionPoint.h.

Referenced by getLine(), and setLine().

◆ radius

double WTransferFunctionPoint::radius

private

the radius of the object

Definition at line 156 of file WTransferFunctionPoint.h.

Referenced by boundingRect(), and paint().

◆ right

WTransferFunctionPoint* WTransferFunctionPoint::right

private

pointer to point to the right

Definition at line 161 of file WTransferFunctionPoint.h.

Referenced by clampToLeftAndRight(), getRight(), itemChange(), and setRight().

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

Public Types

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ BaseClass

Constructor & Destructor Documentation

◆ WTransferFunctionPoint()

◆ ~WTransferFunctionPoint()

Member Function Documentation

◆ boundingRect()

◆ clampToLeftAndRight()

◆ clampToRectangle()

◆ getLeft()

◆ getLine()

◆ getRight()

◆ itemChange()

◆ mousePressEvent()

◆ paint()

◆ setLeft()

◆ setLine()

◆ setPos()

◆ setRight()

Member Data Documentation

◆ _parent

◆ left

◆ line

◆ radius

◆ right