class OSGGA_EXPORT osgGA::TrackballManipulator

Inheritance:

Public Methods

TrackballManipulator()

virtual const char* className() const

void setMinimumZoomScale(float minimumZoomScale)

set the minimum distance (as ratio) the eye point can be zoomed in towards the center before the center is pushed forward

float getMinimumZoomScale() const

get the minimum distance (as ratio) the eye point can be zoomed in

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

set the position of the matrix manipulator using a 4x4 Matrix

virtual void setByInverseMatrix(const osg::Matrixd& matrix)

set the position of the matrix manipulator using a 4x4 Matrix

virtual osg::Matrixd getMatrix() const

get the position of the manipulator as 4x4 Matrix

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

virtual osgUtil::SceneView::FusionDistanceMode getFusionDistanceMode() const

Get the FusionDistanceMode.

virtual float getFusionDistanceValue() const

Get the FusionDistanceValue.

virtual void setNode(osg::Node*)

Attach a node to the manipulator.

virtual const osg::Node* getNode() const

Return node if attached

virtual osg::Node* getNode()

Return node if attached

virtual void home(const GUIEventAdapter& ea, GUIActionAdapter& us)

Move the camera to the default position.

virtual void init(const GUIEventAdapter& ea, GUIActionAdapter& us)

Start/restart the manipulator

virtual bool handle(const GUIEventAdapter& ea, GUIActionAdapter& us)

handle events, return true if handled, false otherwise

virtual void getUsage(osg::ApplicationUsage& usage) const

Get the keyboard and mouse usage of this manipulator

Protected Fields

osg::ref_ptr<const GUIEventAdapter> _ga_t1

osg::ref_ptr<const GUIEventAdapter> _ga_t0

osg::ref_ptr<osg::Node> _node

double _modelScale

double _minimumZoomScale

bool _thrown

osg::Vec3d _center

osg::Quat _rotation

double _distance

Protected Methods

virtual ~TrackballManipulator()

void flushMouseEventStack()

Reset the internal GUIEvent stack

void addMouseEvent(const GUIEventAdapter& ea)

Add the current mouse GUIEvent to internal stack

void computePosition(const osg::Vec3& eye, const osg::Vec3& lv, const osg::Vec3& up)

bool calcMovement()

For the give mouse movement calculate the movement of the camera.

void trackball(osg::Vec3& axis, float& angle, float p1x, float p1y, float p2x, float p2y)

float tb_project_to_sphere(float r, float x, float y)

bool isMouseMoving()

Check the speed at which the mouse is moving.

Inherited from MatrixManipulator:

Public Classes

class CoordinateFrameCallback: public osg::Referenced

callback class to use to allow matrix manipulators to querry the application for the local coordinate frame

Public Methods

virtual void setMinimumDistance(float minimumDistance)

float getMinimumDistance() const

virtual void setCoordinateFrameCallback(CoordinateFrameCallback* cb)

CoordinateFrameCallback* getCoordinateFrameCallback()

const CoordinateFrameCallback* getCoordinateFrameCallback() const

osg::CoordinateFrame getCoordinateFrame(const osg::Vec3d& position) const

osg::Vec3d getSideVector(const osg::CoordinateFrame& cf) const

osg::Vec3d getFrontVector(const osg::CoordinateFrame& cf) const

osg::Vec3d getUpVector(const osg::CoordinateFrame& cf) const

virtual void setHomePosition(const osg::Vec3d& eye, const osg::Vec3d& center, const osg::Vec3d& up)

virtual void getHomePosition(osg::Vec3d& eye, osg::Vec3d& center, osg::Vec3d& up)

virtual void setAutoComputeHomePosition(bool flag)

bool getAutoComputeHomePosition() const

virtual void computeHomePosition()

virtual void accept(GUIEventHandlerVisitor& v)

Protected Fields

double _minimumDistance

bool _autoComputeHomePosition

osg::Vec3d _homeEye

osg::Vec3d _homeCenter

osg::Vec3d _homeUp

osg::ref_ptr<CoordinateFrameCallback> _coordinateFrameCallback

Inherited from GUIEventHandler:

Public Methods

META_Object (osgGA, GUIEventHandler) const () const

virtual CompositeGUIEventHandler* getComposite()

Documentation

TrackballManipulator()

virtual const char* className() const

void setMinimumZoomScale(float minimumZoomScale)

set the minimum distance (as ratio) the eye point can be zoomed in towards the center before the center is pushed forward

float getMinimumZoomScale() const

get the minimum distance (as ratio) the eye point can be zoomed in

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

set the position of the matrix manipulator using a 4x4 Matrix

virtual void setByInverseMatrix(const osg::Matrixd& matrix)

set the position of the matrix manipulator using a 4x4 Matrix

virtual osg::Matrixd getMatrix() const

get the position of the manipulator as 4x4 Matrix

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

virtual osgUtil::SceneView::FusionDistanceMode getFusionDistanceMode() const

Get the FusionDistanceMode. Used by SceneView for setting up setereo convergence.

virtual float getFusionDistanceValue() const

Get the FusionDistanceValue. Used by SceneView for setting up setereo convergence.

virtual void setNode(osg::Node*)

Attach a node to the manipulator. Automatically detaches previously attached node. setNode(NULL) detaches previously nodes. Is ignored by manipulators which do not require a reference model.

virtual const osg::Node* getNode() const

Return node if attached

virtual osg::Node* getNode()

Return node if attached

virtual void home(const GUIEventAdapter& ea, GUIActionAdapter& us)

Move the camera to the default position. May be ignored by manipulators if home functionality is not appropriate.

virtual void init(const GUIEventAdapter& ea, GUIActionAdapter& us)

Start/restart the manipulator

virtual bool handle(const GUIEventAdapter& ea, GUIActionAdapter& us)

handle events, return true if handled, false otherwise

virtual void getUsage(osg::ApplicationUsage& usage) const

Get the keyboard and mouse usage of this manipulator

virtual ~TrackballManipulator()

void flushMouseEventStack()

Reset the internal GUIEvent stack

void addMouseEvent(const GUIEventAdapter& ea)

Add the current mouse GUIEvent to internal stack

void computePosition(const osg::Vec3& eye, const osg::Vec3& lv, const osg::Vec3& up)

bool calcMovement()

For the give mouse movement calculate the movement of the camera. Return true is camera has moved and a redraw is required.

void trackball(osg::Vec3& axis, float& angle, float p1x, float p1y, float p2x, float p2y)

float tb_project_to_sphere(float r, float x, float y)

bool isMouseMoving()

Check the speed at which the mouse is moving. If speed is below a threshold then return false, otherwise return true.

osg::ref_ptr<const GUIEventAdapter> _ga_t1

osg::ref_ptr<const GUIEventAdapter> _ga_t0

osg::ref_ptr<osg::Node> _node

double _modelScale

double _minimumZoomScale

bool _thrown

osg::Vec3d _center

osg::Quat _rotation

double _distance

This class has no child classes.

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