New OSG manipulator: TrackballManipulator with added mouse wheel zoom. More...

#include <WGEZoomTrackballManipulator.h>

Inheritance diagram for WGEZoomTrackballManipulator:

Collaboration diagram for WGEZoomTrackballManipulator:

Public Member Functions
	WGEZoomTrackballManipulator ()
	Default constructor. More...

virtual void	setByMatrix (const osg::Matrixd &matrix)
	Set the position of the manipulator using a 4x4 matrix. More...

virtual osg::Matrixd	getMatrix () const
	Get the position of the manipulator as 4x4 matrix. More...

virtual osg::Matrixd	getMatrixWithoutZoom () const
	Get the manipulator only containing rotation and translation. More...

virtual osg::Matrixd	getInverseMatrix () const
	Get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix. More...

virtual void	home (double currentTime)
	Move the camera to the default position. More...

virtual bool	handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &us)
	Handle events, return true if handled, false otherwise. More...

double	getZoom () const
	Get zoom factor. More...

void	setZoom (double zoom)
	Set zoom factor. More...

void	setPaintMode (int mode)
	setter for paint mode when set to something different from 0, a left drag should move the scene More...

void	setThrow (bool allowThrow=true)
	En-/Disables throwing. More...

bool	getThrow () const
	Checks whether throwing is active. More...

virtual void	computeHomePosition (const osg::Camera *camera, bool useBoundingBox)
	Computes the home position. More...

void	fitToScreen (const osg::Camera *camera)
	Zooms and centers to fit screen. More...

Private Member Functions
bool	zoom (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &us)
	Handles events related to zooming. More...

virtual bool	performMovementMiddleMouseButton (const double eventTimeDelta, const double dx, const double dy)
	Performs the middle mouse button click. More...

Private Attributes
double	m_zoom
	Zoom factor. More...

bool	m_allowThrow
	Do we want the auto-rotation thingy? More...

int	m_paintMode
	paint mode More...

double	m_radius
	The radius of the bounding sphere. More...

Detailed Description

New OSG manipulator: TrackballManipulator with added mouse wheel zoom.

Definition at line 36 of file WGEZoomTrackballManipulator.h.

Constructor & Destructor Documentation

◆ WGEZoomTrackballManipulator()

WGEZoomTrackballManipulator::WGEZoomTrackballManipulator ( )

Default constructor.

Definition at line 28 of file WGEZoomTrackballManipulator.cpp.

Member Function Documentation

◆ computeHomePosition()

void WGEZoomTrackballManipulator::computeHomePosition	(	const osg::Camera *	camera,
		bool	useBoundingBox
	)

virtual

Computes the home position.

Parameters

camera	The camera from which to compute.
useBoundingBox	if boundingboxes should be used.

Definition at line 179 of file WGEZoomTrackballManipulator.cpp.

References WGEZoomTrackballNodeVisitor::getBoundingBox(), and m_radius.

Referenced by fitToScreen().

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◆ fitToScreen()

void WGEZoomTrackballManipulator::fitToScreen ( const osg::Camera * camera )

Zooms and centers to fit screen.

Parameters

camera The camera to zoom.

Definition at line 215 of file WGEZoomTrackballManipulator.cpp.

References computeHomePosition(), m_radius, and m_zoom.

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◆ getInverseMatrix()

osg::Matrixd WGEZoomTrackballManipulator::getInverseMatrix ( ) const

virtual

Get the position of the manipulator as a inverse matrix of the manipulator, typically used as a model view matrix.

Returns: the inverse matrix

Definition at line 55 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

◆ getMatrix()

osg::Matrixd WGEZoomTrackballManipulator::getMatrix ( ) const

virtual

Get the position of the manipulator as 4x4 matrix.

Returns: the matrix representing the transformation

Definition at line 45 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

◆ getMatrixWithoutZoom()

osg::Matrixd WGEZoomTrackballManipulator::getMatrixWithoutZoom ( ) const

virtual

Get the manipulator only containing rotation and translation.

Returns: the matrix with translation and rotation.

Definition at line 50 of file WGEZoomTrackballManipulator.cpp.

◆ getThrow()

bool WGEZoomTrackballManipulator::getThrow ( ) const

Checks whether throwing is active.

Returns: true if active

Definition at line 174 of file WGEZoomTrackballManipulator.cpp.

References m_allowThrow.

◆ getZoom()

double WGEZoomTrackballManipulator::getZoom ( ) const

inline

Get zoom factor.

Returns: the current zoom factor

Definition at line 165 of file WGEZoomTrackballManipulator.h.

References m_zoom.

◆ handle()

bool WGEZoomTrackballManipulator::handle	(	const osgGA::GUIEventAdapter &	ea,
		osgGA::GUIActionAdapter &	us
	)

virtual

Handle events, return true if handled, false otherwise.

Parameters

ea	Event class for storing Keyboard, mouse and window events.
us	Interface by which GUIEventHandlers may request actions of the GUI system

Returns: true if event was handled

Definition at line 124 of file WGEZoomTrackballManipulator.cpp.

References WGraphicsEngine::getGraphicsEngine(), home(), m_allowThrow, m_paintMode, and zoom().

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◆ home()

void WGEZoomTrackballManipulator::home ( double currentTime )

virtual

Move the camera to the default position.

May be ignored by manipulators if home functionality is not appropriate.

Parameters

currentTime Variable specified in osg class but not used.

Definition at line 60 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

Referenced by handle().

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◆ performMovementMiddleMouseButton()

bool WGEZoomTrackballManipulator::performMovementMiddleMouseButton	(	const double	eventTimeDelta,
		const double	dx,
		const double	dy
	)

privatevirtual

Performs the middle mouse button click.

Parameters

eventTimeDelta	The delta time of the event
dx	The delta x of the mouse.
dy	The delta y of the mouse.

Returns: true It was performed.; false It was not performed.

Definition at line 255 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

◆ setByMatrix()

void WGEZoomTrackballManipulator::setByMatrix ( const osg::Matrixd & matrix )

virtual

Set the position of the manipulator using a 4x4 matrix.

Parameters

matrix position of the manipulator

Definition at line 37 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

◆ setPaintMode()

void WGEZoomTrackballManipulator::setPaintMode ( int mode )

setter for paint mode when set to something different from 0, a left drag should move the scene

Parameters

mode the mode

Definition at line 164 of file WGEZoomTrackballManipulator.cpp.

References m_paintMode.

◆ setThrow()

void WGEZoomTrackballManipulator::setThrow ( bool allowThrow = true )

En-/Disables throwing.

Parameters

allowThrow if true, throwing is enabled.

Definition at line 169 of file WGEZoomTrackballManipulator.cpp.

References m_allowThrow.

Referenced by WGEViewer::updateThrowing().

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◆ setZoom()

void WGEZoomTrackballManipulator::setZoom ( double zoom )

inline

Set zoom factor.

Parameters

zoom	the zoom factor to be set.

Definition at line 170 of file WGEZoomTrackballManipulator.h.

References m_zoom, and zoom().

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◆ zoom()

bool WGEZoomTrackballManipulator::zoom	(	const osgGA::GUIEventAdapter &	ea,
		osgGA::GUIActionAdapter &	us
	)

private

Handles events related to zooming.

Parameters

ea	Event class for storing Keyboard, mouse and window events.
us	Interface by which GUIEventHandlers may request actions of the GUI system

Returns: true if event was handled

Definition at line 66 of file WGEZoomTrackballManipulator.cpp.

References m_zoom.

Referenced by handle(), and setZoom().

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Member Data Documentation

◆ m_allowThrow

bool WGEZoomTrackballManipulator::m_allowThrow

private

Do we want the auto-rotation thingy?

Definition at line 158 of file WGEZoomTrackballManipulator.h.

Referenced by getThrow(), handle(), and setThrow().

◆ m_paintMode

int WGEZoomTrackballManipulator::m_paintMode

private

paint mode

Definition at line 160 of file WGEZoomTrackballManipulator.h.

Referenced by handle(), and setPaintMode().

◆ m_radius

double WGEZoomTrackballManipulator::m_radius

private

The radius of the bounding sphere.

Definition at line 162 of file WGEZoomTrackballManipulator.h.

Referenced by computeHomePosition(), and fitToScreen().

◆ m_zoom

double WGEZoomTrackballManipulator::m_zoom

private

Zoom factor.

Definition at line 157 of file WGEZoomTrackballManipulator.h.

Referenced by fitToScreen(), getInverseMatrix(), getMatrix(), getZoom(), home(), performMovementMiddleMouseButton(), setByMatrix(), setZoom(), and zoom().

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

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ WGEZoomTrackballManipulator()

Member Function Documentation

◆ computeHomePosition()

◆ fitToScreen()

◆ getInverseMatrix()

◆ getMatrix()

◆ getMatrixWithoutZoom()

◆ getThrow()

◆ getZoom()

◆ handle()

◆ home()

◆ performMovementMiddleMouseButton()

◆ setByMatrix()

◆ setPaintMode()

◆ setThrow()

◆ setZoom()

◆ zoom()

Member Data Documentation

◆ m_allowThrow

◆ m_paintMode

◆ m_radius

◆ m_zoom