TArcBall Class Reference

Implements the arc-ball rotation manipulator.

Used by plot-painters.

Arcball sphere constants:

• Diameter is 2.0f
• Radius is 1.0f

Definition at line 21 of file TArcBall.h.

Public Member Functions
	TArcBall (UInt_t NewWidth=100, UInt_t NewHeight=100)
	constructor More...
virtual	~TArcBall ()
void	SetBounds (UInt_t NewWidth, UInt_t NewHeight)
void	Click (const TPoint &NewPt)
	Mouse down. More...
void	Drag (const TPoint &NewPt)
	Mouse drag, calculate rotation. More...
const Double_t *	GetRotMatrix () const

Protected Member Functions
void	MapToSphere (const TPoint &NewPt, Double_t *NewVec) const
	map to sphere More...

Private Member Functions
	TArcBall (const TArcBall &)
TArcBall &	operator= (const TArcBall &)
void	ResetMatrices ()
	Set rotation matrix as union. More...

Private Attributes
Double_t	fThisRot [9]
Double_t	fLastRot [9]
Double_t	fTransform [16]
Double_t	fStVec [3]
Double_t	fEnVec [3]
Double_t	fAdjustWidth
Double_t	fAdjustHeight

#include <TArcBall.h>

Constructor & Destructor Documentation

TArcBall::TArcBall ( const TArcBall &  )

private

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

constructor

Definition at line 236 of file TArcBall.cxx.

virtual TArcBall::~TArcBall ( )

inlinevirtual

Definition at line 38 of file TArcBall.h.

Member Function Documentation

void TArcBall::Click

(

const TPoint &

NewPt

)

Mouse down.

Definition at line 249 of file TArcBall.cxx.

Referenced by TGLPlotCamera::StartRotation().

void TArcBall::Drag

(

const TPoint &

NewPt

)

Mouse drag, calculate rotation.

Definition at line 260 of file TArcBall.cxx.

Referenced by TGLPlotCamera::RotateCamera().

const Double_t* TArcBall::GetRotMatrix ( ) const

inline

Definition at line 49 of file TArcBall.h.

Referenced by TGLPlotCamera::Apply().

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

inlineprotected

map to sphere

Definition at line 210 of file TArcBall.cxx.

Referenced by Click(), and Drag().

TArcBall& TArcBall::operator= ( const TArcBall &  )

private

void TArcBall::ResetMatrices ( )

private

Set rotation matrix as union.

Definition at line 287 of file TArcBall.cxx.

Referenced by TArcBall().

void TArcBall::SetBounds ( UInt_t  NewWidth, UInt_t  NewHeight  )

inline

Definition at line 40 of file TArcBall.h.

Referenced by TGLPlotCamera::SetViewport(), and TArcBall().

Member Data Documentation

Double_t TArcBall::fAdjustHeight

private

Definition at line 29 of file TArcBall.h.

Referenced by MapToSphere().

Double_t TArcBall::fAdjustWidth

private

Definition at line 28 of file TArcBall.h.

Referenced by MapToSphere().

Double_t TArcBall::fEnVec[3]

private

Definition at line 27 of file TArcBall.h.

Referenced by Drag().

Double_t TArcBall::fLastRot[9]

private

Definition at line 24 of file TArcBall.h.

Referenced by Click(), Drag(), and ResetMatrices().

Double_t TArcBall::fStVec[3]

private

Definition at line 26 of file TArcBall.h.

Referenced by Click(), and Drag().

Double_t TArcBall::fThisRot[9]

private

Definition at line 23 of file TArcBall.h.

Referenced by Click(), Drag(), and ResetMatrices().

Double_t TArcBall::fTransform[16]

private

Definition at line 25 of file TArcBall.h.

Referenced by Drag(), GetRotMatrix(), and ResetMatrices().

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

• graf3d/gl/inc/TArcBall.h
• graf3d/gl/src/TArcBall.cxx