class TGLSelectBuffer


 Encapsulates OpenGL select buffer.
 Provides sorting of the results based on z-coordinate of the
 selection hit and can fill the TGLSelectRecordBase records.

Function Members (Methods)

public:

	TGLSelectBuffer()
	TGLSelectBuffer(const TGLSelectBuffer&)
virtual	~TGLSelectBuffer()
Bool_t	CanGrow()
static TClass*	Class()
UInt_t*	GetBuf() const
Int_t	GetBufSize() const
Int_t	GetNRecords() const
void	Grow()
virtual TClass*	IsA() const
TGLSelectBuffer&	operator=(const TGLSelectBuffer&)
void	ProcessResult(Int_t glResult)
UInt_t*	RawRecord(Int_t i)
Int_t	SelectRecord(TGLSelectRecordBase& rec, Int_t i)
virtual void	ShowMembers(TMemberInspector&)
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)

Data Members

protected:

UInt_t*	fBuf	Actual buffer.
Int_t	fBufSize	Size of buffer.
Int_t	fNRecords	Number of records as returned by glRenderMode.
vector<pair<unsigned int,unsigned int*> >	fSortedRecords
static Int_t	fgMaxBufSize

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

TGLSelectBuffer()

 Constructor.

~TGLSelectBuffer()

 Destructor.

Bool_t CanGrow()

static: return true if current buffer is smaller than the max buffer size

void Grow()

 Increase size of the select buffer.

void ProcessResult(Int_t glResult)

 Process result of GL-selection: sort the hits by their minimum
 z-coordinate.

Int_t SelectRecord(TGLSelectRecordBase& rec, Int_t i)

 Fill select record rec with data on (sorted) position i.
 Returns depth of name-stack for this record.

TGLSelectBuffer()

Int_t GetBufSize() const

{ return fBufSize; }

UInt_t* GetBuf() const

{ return fBuf; }

Int_t GetNRecords() const

{ return fNRecords; }

UInt_t* RawRecord(Int_t i)

{ return fSortedRecords[i].second; }