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ROOT » GRAF3D » GL » TArcBall

class TArcBall


 Implements the arc-ball rotation manipulator.
 Used by plot-painters.

Function Members (Methods)

public:

	TArcBall(UInt_t NewWidth = 100, UInt_t NewHeight = 100)
virtual	~TArcBall()
static TClass*	Class()
void	Click(const TPoint& NewPt)
void	Drag(const TPoint& NewPt)
const Double_t*	GetRotMatrix() const
virtual TClass*	IsA() const
void	SetBounds(UInt_t NewWidth, UInt_t NewHeight)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)

protected:

void	MapToSphere(const TPoint& NewPt, Double_t* NewVec) const

private:

	TArcBall(const TArcBall&)
TArcBall&	operator=(const TArcBall&)
void	ResetMatrices()

Data Members

private:

Double_t	fAdjustHeight	Mouse bounds height
Double_t	fAdjustWidth	Mouse bounds width
Double_t	fEnVec[3]	Saved drag vector
Double_t	fLastRot[9]
Double_t	fStVec[3]	Saved click vector
Double_t	fThisRot[9]
Double_t	fTransform[16]

Class Charts

Inheritance Inherited Members Includes Libraries

Class Charts

Function documentation

void MapToSphere(const TPoint& NewPt, Double_t* NewVec) const

map to sphere

TArcBall(UInt_t NewWidth = 100, UInt_t NewHeight = 100)

 constructor

void Click(const TPoint& NewPt)

Mouse down

void Drag(const TPoint& NewPt)

Mouse drag, calculate rotation

void ResetMatrices()

Set rotation matrix as union

TArcBall(const TArcBall& )

Non-copyable

virtual ~TArcBall()

{ }

void SetBounds(UInt_t NewWidth, UInt_t NewHeight)

const Double_t * GetRotMatrix() const