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class TGLCameraOverlay: public TGLOverlayElement

 A GL overlay element which displays camera furstum.

Function Members (Methods)

public:

	TGLCameraOverlay(Bool_t showOrtho = kTRUE, Bool_t showPersp = kFALSE)
virtual	~TGLCameraOverlay()
static TClass*	Class()
TAttAxis*	GetAttAxis()
Int_t	GetOrthographicMode() const
Int_t	GetPerspectiveMode() const
TGLOverlayElement::ERole	TGLOverlayElement::GetRole() const
Bool_t	GetShowOrthographic() const
Bool_t	GetShowPerspective() const
Bool_t	GetUseExternalRefPlane() const
virtual Bool_t	TGLOverlayElement::Handle(TGLRnrCtx& rnrCtx, TGLOvlSelectRecord& selRec, Event_t* event)
virtual TClass*	IsA() const
virtual Bool_t	TGLOverlayElement::MouseEnter(TGLOvlSelectRecord& selRec)
virtual void	TGLOverlayElement::MouseLeave()
virtual Bool_t	TGLOverlayElement::MouseStillInside(TGLOvlSelectRecord& selRec)
TGLPlane&	RefExternalRefPlane()
virtual void	Render(TGLRnrCtx& rnrCtx)
void	SetOrthographicMode(TGLCameraOverlay::EMode m)
void	SetPerspectiveMode(TGLCameraOverlay::EMode m)
void	TGLOverlayElement::SetRole(TGLOverlayElement::ERole r)
void	SetShowOrthographic(Bool_t x)
void	SetShowPerspective(Bool_t x)
virtual void	ShowMembers(TMemberInspector& insp, char* parent)
virtual void	Streamer(TBuffer& b)
void	StreamerNVirtual(TBuffer& b)
void	UseExternalRefPlane(Bool_t x)

protected:

void	RenderAxis(TGLRnrCtx& rnrCtx, Bool_t drawGrid)
void	RenderBar(TGLRnrCtx& rnrCtx)
void	RenderGrid(TGLRnrCtx& rnrCtx)
void	RenderPlaneIntersect(TGLRnrCtx& rnrCtx)

private:

	TGLCameraOverlay(const TGLCameraOverlay&)
TGLCameraOverlay&	operator=(const TGLCameraOverlay&)

Data Members

public:

enum EMode {	kPlaneIntersect
	kBar
	kAxis
	kGridFront
	kGridBack
};
enum TGLOverlayElement::ERole {	kUser
	kViewer
	kAnnotation
	kAll
};

protected:

TAxis*	fAxis
Float_t	fAxisExtend
TGLAxisPainter*	fAxisPainter
TGLPlane	fExternalRefPlane
TGLCameraOverlay::EMode	fOrthographicMode
TGLCameraOverlay::EMode	fPerspectiveMode
TGLOverlayElement::ERole	TGLOverlayElement::fRole
Bool_t	fShowOrthographic
Bool_t	fShowPerspective
Bool_t	fUseAxisColors
Bool_t	fUseExternalRefPlane

private:

Double_t	fFrustum[4]

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

TGLCameraOverlay(Bool_t showOrtho = kTRUE, Bool_t showPersp = kFALSE)

 Constructor.

~TGLCameraOverlay()

 Destructor.

TAttAxis* GetAttAxis()

void RenderPlaneIntersect(TGLRnrCtx& rnrCtx)

 Print corss section coordinates in top right corner of screen.

void RenderAxis(TGLRnrCtx& rnrCtx, Bool_t drawGrid)

 Draw axis on four edges and a transparent grid.

void RenderBar(TGLRnrCtx& rnrCtx)

 Show frustum size with fixed screen line length and printed value.

void Render(TGLRnrCtx& rnrCtx)

 Display coodinates info of current frustum.

TGLCameraOverlay(const TGLCameraOverlay& )

TGLCameraOverlay& operator=(const TGLCameraOverlay& )

void RenderGrid(TGLRnrCtx& rnrCtx)

TGLPlane& RefExternalRefPlane()

{ return fExternalRefPlane; }

void UseExternalRefPlane(Bool_t x)

{ fUseExternalRefPlane=x; }

Bool_t GetUseExternalRefPlane() const

{ return fUseExternalRefPlane; }

Int_t GetPerspectiveMode() const

{ return fPerspectiveMode;}

void SetPerspectiveMode(TGLCameraOverlay::EMode m)

{fPerspectiveMode = m;}

Int_t GetOrthographicMode() const

{ return fOrthographicMode;}

void SetOrthographicMode(TGLCameraOverlay::EMode m)

{fOrthographicMode = m;}

Bool_t GetShowOrthographic() const

{ return fShowOrthographic; }

void SetShowOrthographic(Bool_t x)

{fShowOrthographic =x;}

Bool_t GetShowPerspective() const

{ return fShowPerspective; }

void SetShowPerspective(Bool_t x)

{fShowPerspective =x;}