Rotate manipulator - attaches to physical shape and draws local axes widgets - rings drawn from attached physical center, in plane defined by axis.

User can mouse over (turns yellow) and L click/drag to rotate attached physical round the ring center. Widgets use standard 3D package axes colours: X red, Y green, Z blue.

Definition at line 20 of file TGLRotateManip.h.

Public Member Functions
	TGLRotateManip ()
	Construct rotation manipulator not bound to any physical shape. More...

	TGLRotateManip (TGLPhysicalShape *shape)
	Construct rotation manipulator bound to TGLPhysicalShape 'shape'. More...

virtual	~TGLRotateManip ()
	Destroy the rotation manipulator. More...

virtual void	Draw (const TGLCamera &camera) const
	Draw rotate manipulator - axis rings drawn from attached physical center, in plane defined by axis as normal, in red(X), green(Y) and blue(Z), with white center sphere. More...

virtual Bool_t	HandleButton (const Event_t &event, const TGLCamera &camera)
	Handle mouse button event over manipulator - returns kTRUE if redraw required kFALSE otherwise. More...

virtual Bool_t	HandleMotion (const Event_t &event, const TGLCamera &camera)
	Handle mouse motion over manipulator - if active (selected widget) rotate physical around selected ring widget plane normal. More...

	ClassDef (TGLRotateManip, 0)

Public Member Functions inherited from TGLManip
	TGLManip ()
	Construct a manipulator object, bound to supplied viewer, and no physical shape. More...

	TGLManip (TGLPhysicalShape *shape)
	Construct a manipulator object, bound to supplied physical shape. More...

virtual	~TGLManip ()
	Destroy manipulator object. More...

UInt_t	GetSelectedWidget () const

void	SetSelectedWidget (UInt_t s)

Bool_t	GetActive () const

void	SetActive (Bool_t a)

void	Attach (TGLPhysicalShape *shape)

TGLPhysicalShape *	GetAttached () const

virtual Bool_t	Select (const TGLCamera &, const TGLRect &, const TGLBoundingBox &)

	ClassDef (TGLManip, 0)

Public Member Functions inherited from TVirtualGLManip
virtual	~TVirtualGLManip ()

	ClassDef (TVirtualGLManip, 0)

Static Protected Member Functions
static Double_t	Angle (const TGLVector3 &v1, const TGLVector3 &v2)
	Calculate unsigned angle between vectors v1 and v2. More...

static Double_t	Angle (const TGLVector3 &v1, const TGLVector3 &v2, const TGLVector3 &ref)
	Calculate signed angle between vectors v1 and v2, using ref to define right handed coord system. More...

Private Member Functions
void	DrawAxisRing (const TGLVertex3 &origin, const TGLVector3 &axis, Double_t radius, Float_t rgba[4]) const

Double_t	CalculateAngleDelta (const TPoint &mouse, const TGLCamera &camera)
	Calculate angle delta for rotation based on new mouse position. More...

TGLLine3	CalculateRingLine (const TPoint &mouse, const TGLCamera &camera) const
	Calculated interaction line between 'mouse' viewport point, and current selected widget (ring), under supplied 'camera' projection. More...

Private Attributes
Bool_t	fShallowRing

Bool_t	fShallowFront
	does active ring form shallow angle to eye? More...

TGLPlane	fActiveRingPlane
	front or back of the active shallow ring? More...

TGLVertex3	fActiveRingCenter
	plane of the active ring (widget) More...

TGLLine3	fRingLine
	center of active ring More...

TGLLine3	fRingLineOld

Additional Inherited Members
Protected Member Functions inherited from TGLManip
	TGLManip (const TGLManip &)
	last (latest) mouse position (in WINDOW coords) More...

TGLManip &	operator= (const TGLManip &)
	Assignment operator. More...

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. More...

const UChar_t *	ColorFor (UInt_t widget) const
	Returns color to be used for given widget. More...

Protected Attributes inherited from TGLManip
TGLPhysicalShape *	fShape

UInt_t	fSelectedWidget
	manipulated shape More...

Bool_t	fActive
	active width (axis) component More...

TPoint	fFirstMouse
	manipulator is active? More...

TPoint	fLastMouse
	first (start) mouse position (in WINDOW coords) More...

#include <TGLRotateManip.h>

Inheritance diagram for TGLRotateManip:

[legend]

Constructor & Destructor Documentation

TGLRotateManip::TGLRotateManip ( )

Construct rotation manipulator not bound to any physical shape.

Definition at line 57 of file TGLRotateManip.cxx.

TGLRotateManip::TGLRotateManip ( TGLPhysicalShape * shape )

Construct rotation manipulator bound to TGLPhysicalShape 'shape'.

Definition at line 69 of file TGLRotateManip.cxx.

TGLRotateManip::~TGLRotateManip ( )

virtual

Destroy the rotation manipulator.

Definition at line 82 of file TGLRotateManip.cxx.

Member Function Documentation

Double_t TGLRotateManip::Angle	(	const TGLVector3 &	v1,
		const TGLVector3 &	v2
	)

staticprotected

Calculate unsigned angle between vectors v1 and v2.

Definition at line 33 of file TGLRotateManip.cxx.

Referenced by Angle(), CalculateAngleDelta(), and HandleButton().

Double_t TGLRotateManip::Angle	(	const TGLVector3 &	v1,
		const TGLVector3 &	v2,
		const TGLVector3 &	ref
	)

staticprotected

Calculate signed angle between vectors v1 and v2, using ref to define right handed coord system.

If v1.v2 parallel to ref vector: +ive for clockwise, -ive for anticlockwise
If v1.v2 antiparallel to ref vector: -ive for clockwise, +ive for anticlockwise

Definition at line 43 of file TGLRotateManip.cxx.

Double_t TGLRotateManip::CalculateAngleDelta	(	const TPoint &	mouse,
		const TGLCamera &	camera
	)

private

Calculate angle delta for rotation based on new mouse position.

Definition at line 238 of file TGLRotateManip.cxx.

Referenced by HandleMotion().

TGLLine3 TGLRotateManip::CalculateRingLine	(	const TPoint &	mouse,
		const TGLCamera &	camera
	)		const

private

Calculated interaction line between 'mouse' viewport point, and current selected widget (ring), under supplied 'camera' projection.

Definition at line 272 of file TGLRotateManip.cxx.

Referenced by CalculateAngleDelta(), and HandleButton().

TGLRotateManip::ClassDef	(	TGLRotateManip	,
		0
	)

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

virtual

Draw rotate manipulator - axis rings drawn from attached physical center, in plane defined by axis as normal, 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 92 of file TGLRotateManip.cxx.