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Reference Guide
TGLFaceSet Class Reference

Implements a native ROOT-GL representation of an arbitrary set of polygons.

Definition at line 22 of file TGLFaceSet.h.

Public Member Functions

 TGLFaceSet (const TBuffer3D &buffer)
 constructor More...
void CalculateNormals ()
 CalculateNormals. More...
virtual void DirectDraw (TGLRnrCtx &rnrCtx) const
 Debug tracing. More...
void EnforceTriangles ()
 Use GLU tesselator to replace all polygons with N > 3 with triangles. More...
UInt_t GetNbPols ()
std::vector< Double_t > & GetNormals ()
std::vector< Int_t > & GetPolyDesc ()
std::vector< Double_t > & GetVertices ()
void SetFromMesh (const RootCsg::TBaseMesh *m)
 Should only be done on an empty faceset object. More...
- Public Member Functions inherited from TGLLogicalShape
 TGLLogicalShape ()
 global flag for usage of display-lists in shapes that use vertex arrays More...
 TGLLogicalShape (const TBuffer3D &buffer)
 Constructor from TBuffer3D. More...
 TGLLogicalShape (TObject *obj)
 Constructor with external object. More...
virtual ~TGLLogicalShape ()
 Destroy logical shape. More...
void AddRef (TGLPhysicalShape *phys) const
 Add reference to given physical shape. More...
virtual Bool_t AlwaysSecondarySelect () const
const TGLBoundingBoxBoundingBox () const
void DestroyPhysicals ()
 Destroy all physicals attached to this logical. More...
virtual void DLCacheClear ()
 Clear all entries for all LODs for this drawable from the display list cache but keeping the reserved ids from GL context. More...
virtual void DLCacheDrop ()
 Drop all entries for all LODs for this drawable from the display list cache, WITHOUT returning the reserved ids to GL context. More...
virtual void DLCachePurge ()
 Purge all entries for all LODs for this drawable from the display list cache, returning the reserved ids to GL context. More...
virtual UInt_t DLOffset (Short_t) const
virtual void Draw (TGLRnrCtx &rnrCtx) const
 Draw the GL drawable, using draw flags. More...
virtual void DrawHighlight (TGLRnrCtx &rnrCtx, const TGLPhysicalShape *pshp, Int_t lvl=-1) const
 Draw the logical shape in highlight mode. More...
TObjectGetExternal () const
const TGLPhysicalShapeGetFirstPhysical () const
TGLSceneGetScene () const
TObjectID () const
virtual Bool_t IgnoreSizeForOfInterest () const
 Return true if size of this shape should be ignored when determining if the object should be drawn. More...
void InvokeContextMenu (TContextMenu &menu, UInt_t x, UInt_t y) const
 Invoke popup menu or our bound external TObject (if any), using passed 'menu' object, at location 'x' 'y'. More...
virtual Bool_t KeepDuringSmartRefresh () const
virtual void ProcessSelection (TGLRnrCtx &rnrCtx, TGLSelectRecord &rec)
 Virtual method called-back after a secondary selection hit is recorded (see TGLViewer::HandleButton(), Ctrl-Button1). More...
virtual Short_t QuantizeShapeLOD (Short_t shapeLOD, Short_t combiLOD) const
 Logical shapes usually support only discreet LOD values, especially in view of display-list caching. More...
UInt_t Ref () const
Bool_t SetDLCache (Bool_t cached)
 Modify capture of draws into display list cache kTRUE - capture, kFALSE direct draw. More...
virtual Bool_t ShouldDLCache (const TGLRnrCtx &rnrCtx) const
 Returns kTRUE if draws should be display list cached kFALSE otherwise. More...
void StrongRef (Bool_t strong) const
void SubRef (TGLPhysicalShape *phys) const
 Remove reference to given physical shape, potentially deleting this object when hitting zero ref-count (if fRefStrong is true). More...
virtual ELODAxes SupportedLODAxes () const
virtual Bool_t SupportsSecondarySelect () const
UInt_t UnrefFirstPhysical ()
 Unreferenced first physical in the list, returning its id and making it fit for destruction somewhere else. More...
virtual void UpdateBoundingBox ()
void UpdateBoundingBoxesOfPhysicals ()
 Update bounding-boxed of all dependent physicals. More...

Static Public Member Functions

static Bool_t GetEnforceTriangles ()
 Get current state of static flag EnforceTriangles. More...
static void SetEnforceTriangles (Bool_t e)
 Set state of static flag EnforceTriangles. More...
- Static Public Member Functions inherited from TGLLogicalShape
static Bool_t GetIgnoreSizeForCameraInterest ()
 Get state of static fgIgnoreSizeForCameraInterest flag. More...
static void SetEnvDefaults ()
static void SetIgnoreSizeForCameraInterest (Bool_t isfci)
 Set state of static fgIgnoreSizeForCameraInterest flag. More...

Private Member Functions

Int_t CheckPoints (const Int_t *source, Int_t *dest) const
 CheckPoints. More...
void GLDrawPolys () const

Static Private Member Functions

static Bool_t Eq (const Double_t *p1, const Double_t *p2)
 test equality More...

Private Attributes

UInt_t fNbPols
std::vector< Double_tfNormals
std::vector< Int_tfPolyDesc
std::vector< Double_tfVertices

Static Private Attributes

static Bool_t fgEnforceTriangles = kFALSE

Additional Inherited Members

- Public Types inherited from TGLLogicalShape
enum  ELODAxes {
  kLODAxesNone = 0, kLODAxesX = 1 << 0, kLODAxesY = 1 << 1, kLODAxesZ = 1 << 2,
  kLODAxesAll = kLODAxesX | kLODAxesY | kLODAxesZ
- Protected Member Functions inherited from TGLLogicalShape
void PurgeDLRange (UInt_t base, Int_t size) const
 External object is a fake. More...
- Protected Attributes inherited from TGLLogicalShape
TGLBoundingBox fBoundingBox
 Also plays the role of ID. More...
UInt_t fDLBase
 scene where object is stored (can be zero!) More...
Bool_t fDLCache
 display-list validity bit-field More...
Int_t fDLSize
 display-list id base More...
UShort_t fDLValid
 display-list size for different LODs More...
 first replica More...
 physical instance ref counting More...
Bool_t fOwnExtObj
 Strong ref (delete on 0 ref); not in scene. More...
UInt_t fRef
Bool_t fRefStrong
 use display list caching More...
 Shape's bounding box. More...
- Static Protected Attributes inherited from TGLLogicalShape
static Bool_t fgIgnoreSizeForCameraInterest = kFALSE
static Bool_t fgUseDLs = kTRUE
static Bool_t fgUseDLsForVertArrs = kTRUE
 global flag for usage of display-lists More...

#include <TGLFaceSet.h>

Inheritance diagram for TGLFaceSet:

Constructor & Destructor Documentation

◆ TGLFaceSet()

TGLFaceSet::TGLFaceSet ( const TBuffer3D buffer)


Definition at line 58 of file TGLFaceSet.cxx.

Member Function Documentation

◆ CalculateNormals()

void TGLFaceSet::CalculateNormals ( )


Definition at line 396 of file TGLFaceSet.cxx.

◆ CheckPoints()

Int_t TGLFaceSet::CheckPoints ( const Int_t source,
Int_t dest 
) const


Definition at line 352 of file TGLFaceSet.cxx.

◆ DirectDraw()

void TGLFaceSet::DirectDraw ( TGLRnrCtx rnrCtx) const

Debug tracing.

Implements TGLLogicalShape.

Definition at line 312 of file TGLFaceSet.cxx.

◆ EnforceTriangles()

void TGLFaceSet::EnforceTriangles ( )

Use GLU tesselator to replace all polygons with N > 3 with triangles.

After this call polygon descriptions are changed. New vertices are not expected – exception is thrown if this is requested by the triangulator. Support for adding of new vertices can be provided.

Definition at line 176 of file TGLFaceSet.cxx.

◆ Eq()

Bool_t TGLFaceSet::Eq ( const Double_t p1,
const Double_t p2 

test equality

Definition at line 385 of file TGLFaceSet.cxx.

◆ GetEnforceTriangles()

Bool_t TGLFaceSet::GetEnforceTriangles ( )

Get current state of static flag EnforceTriangles.

Definition at line 430 of file TGLFaceSet.cxx.

◆ GetNbPols()

UInt_t TGLFaceSet::GetNbPols ( )

Definition at line 44 of file TGLFaceSet.h.

◆ GetNormals()

std::vector<Double_t>& TGLFaceSet::GetNormals ( )

Definition at line 42 of file TGLFaceSet.h.

◆ GetPolyDesc()

std::vector<Int_t>& TGLFaceSet::GetPolyDesc ( )

Definition at line 43 of file TGLFaceSet.h.

◆ GetVertices()

std::vector<Double_t>& TGLFaceSet::GetVertices ( )

Definition at line 41 of file TGLFaceSet.h.

◆ GLDrawPolys()

void TGLFaceSet::GLDrawPolys ( ) const

◆ SetEnforceTriangles()

void TGLFaceSet::SetEnforceTriangles ( Bool_t  e)

Set state of static flag EnforceTriangles.

When this is set, all tesselations will be automatically converted into triangle-only meshes. This is needed to export TGeo shapes and CSG meshes to external triangle-mesh libraries that can not handle arbitrary polygons.

Definition at line 442 of file TGLFaceSet.cxx.

◆ SetFromMesh()

void TGLFaceSet::SetFromMesh ( const RootCsg::TBaseMesh *  m)

Should only be done on an empty faceset object.

Definition at line 134 of file TGLFaceSet.cxx.

Member Data Documentation

◆ fgEnforceTriangles

Bool_t TGLFaceSet::fgEnforceTriangles = kFALSE

Definition at line 30 of file TGLFaceSet.h.

◆ fNbPols

UInt_t TGLFaceSet::fNbPols

Definition at line 28 of file TGLFaceSet.h.

◆ fNormals

std::vector<Double_t> TGLFaceSet::fNormals

Definition at line 26 of file TGLFaceSet.h.

◆ fPolyDesc

std::vector<Int_t> TGLFaceSet::fPolyDesc

Definition at line 27 of file TGLFaceSet.h.

◆ fVertices

std::vector<Double_t> TGLFaceSet::fVertices

Definition at line 25 of file TGLFaceSet.h.

Libraries for TGLFaceSet:

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