class OSGGA_EXPORT osgGA::TrackballManipulator

Inheritance:

Public Methods

TrackballManipulator()

virtual ~TrackballManipulator()

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

Protected Fields

osg::ref_ptr<const GUIEventAdapter> _ga_t1

osg::ref_ptr<const GUIEventAdapter> _ga_t0

osg::ref_ptr<osg::Node> _node

float _modelScale

float _minimumZoomScale

bool _thrown

osg::Vec3 _center

osg::Quat _rotation

float _distance

Protected Methods

void flushMouseEventStack()

Reset the internal GUIEvent stack

void addMouseEvent(const GUIEventAdapter& ea)

Add the current mouse GUIEvent to internal stack

void computeLocalDataFromCamera()

void computeCameraFromLocalData()

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 CameraManipulator:

Public Methods

virtual void setCamera(osg::Camera*)

virtual const osg::Camera* getCamera() const

virtual osg::Camera* getCamera()

virtual void accept(GUIEventHandlerVisitor& v)

Protected Fields

osg::ref_ptr<osg::Camera> _camera

Inherited from GUIEventHandler:

Public Methods

virtual const CompositeGUIEventHandler* getComposite() const

virtual CompositeGUIEventHandler* getComposite()

Documentation

TrackballManipulator()

virtual ~TrackballManipulator()

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

void flushMouseEventStack()

Reset the internal GUIEvent stack

void addMouseEvent(const GUIEventAdapter& ea)

Add the current mouse GUIEvent to internal stack

void computeLocalDataFromCamera()

void computeCameraFromLocalData()

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

float _modelScale

float _minimumZoomScale

bool _thrown

osg::Vec3 _center

osg::Quat _rotation

float _distance

This class has no child classes.

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