TGLSelectBuffer Class Reference

Encapsulates OpenGL select buffer.

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

Definition at line 26 of file TGLSelectBuffer.h.

Public Member Functions
	TGLSelectBuffer ()
	Constructor.
virtual	~TGLSelectBuffer ()
	Destructor.
Bool_t	CanGrow ()
	static: return true if current buffer is smaller than the max buffer size
UInt_t *	GetBuf () const
Int_t	GetBufSize () const
Int_t	GetNRecords () const
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.
UInt_t *	RawRecord (Int_t i)
Int_t	SelectRecord (TGLSelectRecordBase &rec, Int_t i)
	Fill select record rec with data on (sorted) position i.

Protected Types
typedef std::pair< UInt_t, UInt_t * >	RawRecord_t
typedef std::vector< RawRecord_t >	vRawRecord_t

Protected Attributes
UInt_t *	fBuf
Int_t	fBufSize
Int_t	fNRecords
vRawRecord_t	fSortedRecords

Static Protected Attributes
static Int_t	fgMaxBufSize = 1 << 20

#include <TGLSelectBuffer.h>

Member Typedef Documentation

RawRecord_t

typedef std::pair<UInt_t, UInt_t*> TGLSelectBuffer::RawRecord_t

protected

Definition at line 34 of file TGLSelectBuffer.h.

vRawRecord_t

typedef std::vector<RawRecord_t> TGLSelectBuffer::vRawRecord_t

protected

Definition at line 35 of file TGLSelectBuffer.h.

Constructor & Destructor Documentation

TGLSelectBuffer()

TGLSelectBuffer::TGLSelectBuffer

(

)

Constructor.

Definition at line 30 of file TGLSelectBuffer.cxx.

~TGLSelectBuffer()

TGLSelectBuffer::~TGLSelectBuffer ( )

virtual

Destructor.

Definition at line 40 of file TGLSelectBuffer.cxx.

Member Function Documentation

CanGrow()

Bool_t TGLSelectBuffer::CanGrow

(

)

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

Definition at line 48 of file TGLSelectBuffer.cxx.

GetBuf()

UInt_t * TGLSelectBuffer::GetBuf ( ) const

inline

Definition at line 46 of file TGLSelectBuffer.h.

GetBufSize()

Int_t TGLSelectBuffer::GetBufSize ( ) const

inline

Definition at line 45 of file TGLSelectBuffer.h.

GetNRecords()

Int_t TGLSelectBuffer::GetNRecords ( ) const

inline

Definition at line 47 of file TGLSelectBuffer.h.

Grow()

void TGLSelectBuffer::Grow

(

)

Increase size of the select buffer.

Definition at line 56 of file TGLSelectBuffer.cxx.

ProcessResult()

void TGLSelectBuffer::ProcessResult

(

Int_t

glResult

)

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

Definition at line 67 of file TGLSelectBuffer.cxx.

RawRecord()

UInt_t * TGLSelectBuffer::RawRecord ( Int_t  i )

inline

Definition at line 54 of file TGLSelectBuffer.h.

SelectRecord()

Int_t TGLSelectBuffer::SelectRecord	(	TGLSelectRecordBase &	rec,
		Int_t	i
	)

Fill select record rec with data on (sorted) position i.

Returns depth of name-stack for this record.

Definition at line 96 of file TGLSelectBuffer.cxx.

Member Data Documentation

fBuf

UInt_t* TGLSelectBuffer::fBuf

protected

Definition at line 30 of file TGLSelectBuffer.h.

fBufSize

Int_t TGLSelectBuffer::fBufSize

protected

Definition at line 29 of file TGLSelectBuffer.h.

fgMaxBufSize

Int_t TGLSelectBuffer::fgMaxBufSize = 1 << 20

staticprotected

Definition at line 39 of file TGLSelectBuffer.h.

fNRecords

Int_t TGLSelectBuffer::fNRecords

protected

Definition at line 32 of file TGLSelectBuffer.h.

fSortedRecords

vRawRecord_t TGLSelectBuffer::fSortedRecords

protected

Definition at line 37 of file TGLSelectBuffer.h.

Libraries for TGLSelectBuffer:

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

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