TGLScaleManip Class Reference

Scale manipulator - attaches to physical shape and draws local axes widgets with box heads.

User can mouse over (turns yellow) and L click/drag to scale along this axis.

Definition at line 28 of file TGLScaleManip.h.

Public Member Functions
	TGLScaleManip ()
	Construct scale manipulator not bound to any physical shape.
	TGLScaleManip (TGLPhysicalShape *shape)
	Construct scale manipulator bound to TGLPhysicalShape 'shape'.
virtual	~TGLScaleManip ()
	Destroy the scale manipulator.
virtual void	Draw (const TGLCamera &camera) const
	Draw scale manipulator - tubes with box heads, in local axes of attached shape, in red(X), green(Y) and blue(Z), with white center sphere.
virtual Bool_t	HandleButton (const Event_t &event, const TGLCamera &camera)
	Handle mouse button event over manipulator - returns kTRUE if redraw required kFALSE otherwise.
virtual Bool_t	HandleMotion (const Event_t &event, const TGLCamera &camera)
	Handle mouse motion over manipulator - if active (selected widget) scale physical along selected widget (axis) of the manipulator, so it tracks mouse action.
Public Member Functions inherited from TGLManip
	TGLManip ()
	Construct a manipulator object, bound to supplied viewer, and no physical shape.
	TGLManip (TGLPhysicalShape *shape)
	Construct a manipulator object, bound to supplied physical shape.
virtual	~TGLManip ()
	Destroy manipulator object.
void	Attach (TGLPhysicalShape *shape)
Bool_t	GetActive () const
TGLPhysicalShape *	GetAttached () const
UInt_t	GetSelectedWidget () const
virtual Bool_t	Select (const TGLCamera &, const TGLRect &, const TGLBoundingBox &)
void	SetActive (Bool_t a)
void	SetSelectedWidget (UInt_t s)
Public Member Functions inherited from TVirtualGLManip
virtual	~TVirtualGLManip ()

Private Member Functions
void	LimitScale (Double_t &factor) const
	initial scaling factors

Private Attributes
TGLVector3	fStartScale

Additional Inherited Members
Protected Member Functions inherited from TGLManip
	TGLManip (const TGLManip &)
	last (latest) mouse position (in WINDOW coords)
void	CalcDrawScale (const TGLBoundingBox &box, const TGLCamera &camera, Double_t &base, TGLVector3 axis[3]) const
	Calculates base and axis scale factor (in world units) for drawing manipulators with reasonable size range in current camera.
const UChar_t *	ColorFor (UInt_t widget) const
	Returns color to be used for given widget.
TGLManip &	operator= (const TGLManip &)
	Assignment operator.
Protected Attributes inherited from TGLManip
Bool_t	fActive
	active width (axis) component
TPoint	fFirstMouse
	manipulator is active?
TPoint	fLastMouse
	first (start) mouse position (in WINDOW coords)
UInt_t	fSelectedWidget
	manipulated shape
TGLPhysicalShape *	fShape

#include <TGLScaleManip.h>

Inheritance diagram for TGLScaleManip:

Constructor & Destructor Documentation

TGLScaleManip() [1/2]

TGLScaleManip::TGLScaleManip

(

)

Construct scale manipulator not bound to any physical shape.

Definition at line 29 of file TGLScaleManip.cxx.

TGLScaleManip() [2/2]

TGLScaleManip::TGLScaleManip

(

TGLPhysicalShape *

shape

)

Construct scale manipulator bound to TGLPhysicalShape 'shape'.

Definition at line 36 of file TGLScaleManip.cxx.

~TGLScaleManip()

TGLScaleManip::~TGLScaleManip ( )

virtual

Destroy the scale manipulator.

Definition at line 44 of file TGLScaleManip.cxx.

Member Function Documentation

Draw()

void TGLScaleManip::Draw ( const TGLCamera &  camera ) const

virtual

Draw scale manipulator - tubes with box heads, in local axes of attached shape, in red(X), green(Y) and blue(Z), with white center sphere.

If selected widget (mouse over) this is drawn in active colour (yellow).

Implements TGLManip.

Definition at line 53 of file TGLScaleManip.cxx.

HandleButton()

Bool_t TGLScaleManip::HandleButton ( const Event_t &  event, const TGLCamera &  camera  )

virtual

Handle mouse button event over manipulator - returns kTRUE if redraw required kFALSE otherwise.

Reimplemented from TGLManip.

Definition at line 113 of file TGLScaleManip.cxx.

HandleMotion()

Bool_t TGLScaleManip::HandleMotion ( const Event_t &  event, const TGLCamera &  camera  )

virtual

Handle mouse motion over manipulator - if active (selected widget) scale physical along selected widget (axis) of the manipulator, so it tracks mouse action.

Returns kTRUE if redraw required kFALSE otherwise.

Reimplemented from TGLManip.

Definition at line 129 of file TGLScaleManip.cxx.

LimitScale()

void TGLScaleManip::LimitScale ( Double_t &  factor ) const

private

initial scaling factors

Clamp scale to sizable values: 1000 - 1/1000 Guards against div by zero problems.

Definition at line 162 of file TGLScaleManip.cxx.

Member Data Documentation

fStartScale

TGLVector3 TGLScaleManip::fStartScale

private

Definition at line 31 of file TGLScaleManip.h.

Libraries for TGLScaleManip:

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

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