TView3D Class Reference

The 3D view class.

This package was originally written by Evgueni Tcherniaev from IHEP/Protvino.

The original Fortran implementation was adapted to HIGZ/PAW by Olivier Couet and Evgueni Tcherniaev.

This View class is a subset of the original system. It has been converted to a C++ class by Rene Brun.

TView3D creates a 3-D view in the current pad. In this 3D view Lego and Surface plots can be drawn and also 3D polyline and markers. Most of the time a TView3D is created automatically when a 3D object needs to be painted in a pad (for instance a Lego or a Surface plot).

In some case a TView3D should be explicitly. For instance to paint a 3D simple scene composed of simple objects like polylines and polymarkers. The following macro gives an example:

{
   auto cV3D = new TCanvas("cV3D","PolyLine3D & PolyMarker3D Window",200,10,500,500);
 
   // Creating a view
   TView3D *view = (TView3D*) TView::CreateView(1);
   view->SetRange(5,5,5,25,25,25);
 
   // Create a first PolyLine3D
   TPolyLine3D *pl3d1 = new TPolyLine3D(6);
   pl3d1->SetPoint(0, 10, 20, 10);
   pl3d1->SetPoint(1, 15, 15, 15);
   pl3d1->SetPoint(2, 20, 20, 20);
   pl3d1->SetPoint(3, 20, 10, 20);
   pl3d1->SetPoint(4, 10, 10, 20);
   pl3d1->SetPoint(5, 10, 10, 10);
 
   // Create a first PolyMarker3D
   TPolyMarker3D *pm3d1 = new TPolyMarker3D(9);
   pm3d1->SetPoint( 0, 10, 10, 10);
   pm3d1->SetPoint( 1, 20, 20, 20);
   pm3d1->SetPoint( 2, 10, 20, 20);
   pm3d1->SetPoint( 3, 10, 10, 20);
   pm3d1->SetPoint( 4, 20, 20, 10);
   pm3d1->SetPoint( 5, 20, 10, 10);
   pm3d1->SetPoint( 6, 20, 10, 20);
   pm3d1->SetPoint( 7, 10, 20, 10);
   pm3d1->SetPoint( 8, 15, 15, 15);
   pm3d1->SetMarkerSize(2);
   pm3d1->SetMarkerColor(4);
   pm3d1->SetMarkerStyle(2);
 
   // Draw
   pl3d1->Draw();
   pm3d1->Draw();
}

Several coordinate systems are available:

• Cartesian
• Polar
• Cylindrical
• Spherical
• PseudoRapidity/Phi

Definition at line 29 of file TView3D.h.

Public Types
enum	{ kPerspective = BIT(6) }
Public Types inherited from TObject
enum	{   kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,   kBitMask = 0x00ffffff }
enum	{ kSingleKey = (1ULL << ( 0 )) , kOverwrite = (1ULL << ( 1 )) , kWriteDelete = (1ULL << ( 2 )) }
enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }
enum	EStatusBits {   kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) ,   kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Public Member Functions
	TView3D ()
	Default constructor.
	TView3D (Int_t system, const Double_t *rmin, const Double_t *rmax)
	TView3D constructor.
	~TView3D () override
	TView3D default destructor.
void	AdjustScales (TVirtualPad *pad=nullptr) override
	Adjust all sides of view in respect of the biggest one.
void	AxisVertex (Double_t ang, Double_t *av, Int_t &ix1, Int_t &ix2, Int_t &iy1, Int_t &iy2, Int_t &iz1, Int_t &iz2) override
	Define axis vertices.
void	Centered () override
void	Centered3DImages (TVirtualPad *pad=nullptr) override
	Move view into the center of the scene.
	ClassDefOverride (TView3D, 3)
void	DefinePerspectiveView () override
	Define perspective view.
void	DefineViewDirection (const Double_t *s, const Double_t *c, Double_t cosphi, Double_t sinphi, Double_t costhe, Double_t sinthe, Double_t cospsi, Double_t sinpsi, Double_t *tnorm, Double_t *tback) override
	Define view direction (in spherical coordinates)
void	DrawOutlineCube (TList *outline, Double_t *rmin, Double_t *rmax) override
	Draw the outline of a cube while rotating a 3-d object in the pad.
void	ExecuteEvent (Int_t event, Int_t px, Int_t py) override
	Execute action corresponding to one event.
void	ExecuteRotateView (Int_t event, Int_t px, Int_t py) override
	Execute action corresponding to one event.
void	FindNormal (Double_t x, Double_t y, Double_t z, Double_t &zn) override
	Find Z component of NORMAL in normalized coordinates.
void	FindPhiSectors (Int_t iopt, Int_t &kphi, Double_t *aphi, Int_t &iphi1, Int_t &iphi2) override
	Find critical PHI sectors.
void	FindScope (Double_t *scale, Double_t *center, Int_t &irep) override
	Find centre of a MIN-MAX scope and scale factors.
void	FindThetaSectors (Int_t iopt, Double_t phi, Int_t &kth, Double_t *ath, Int_t &ith1, Int_t &ith2) override
	Find critical THETA sectors for given PHI sector.
void	Front () override
void	FrontView (TVirtualPad *pad=nullptr) override
	Set to front view.
Bool_t	GetAutoRange () override
Int_t	GetDistancetoAxis (Int_t axis, Int_t px, Int_t py, Double_t &ratio) override
	Return distance to axis from point px,py.
Double_t	GetDproj () const override
Double_t	GetDview () const override
Double_t	GetExtent () const override
	Get maximum view extent.
Double_t	GetLatitude () override
Double_t	GetLongitude () override
TSeqCollection *	GetOutline () override
Double_t	GetPsi () override
void	GetRange (Double_t *min, Double_t *max) override
	Get Range function.
void	GetRange (Float_t *min, Float_t *max) override
	Get Range function.
Double_t *	GetRmax () override
Double_t *	GetRmin () override
Int_t	GetSystem () override
Double_t *	GetTback () override
Double_t *	GetTN () override
Double_t *	GetTnorm () override
void	GetWindow (Double_t &u0, Double_t &v0, Double_t &du, Double_t &dv) const override
	Get current window extent.
Double_t	GetWindowHeight () const override
Double_t	GetWindowWidth () const override
Bool_t	IsClippedNDC (Double_t *p) const override
	Check if point is clipped in perspective view.
Bool_t	IsPerspective () const override
Bool_t	IsViewChanged () const override
void	MoveFocus (Double_t *center, Double_t dx, Double_t dy, Double_t dz, Int_t nsteps=10, Double_t dlong=0, Double_t dlat=0, Double_t dpsi=0) override
	Move focus to a different box position and extent in nsteps.
void	MoveViewCommand (Char_t chCode, Int_t count=1) override
void	MoveWindow (Char_t option) override
	Move view window :
void	NDCtoWC (const Double_t *pn, Double_t *pw) override
	Transfer point from normalized to world coordinates.
void	NDCtoWC (const Float_t *pn, Float_t *pw) override
	Transfer point from normalized to world coordinates.
void	NormalWCtoNDC (const Double_t *pw, Double_t *pn) override
	Transfer vector of NORMAL from word to normalized coordinates.
void	NormalWCtoNDC (const Float_t *pw, Float_t *pn) override
	Transfer vector of NORMAL from word to normalized coordinates.
void	PadRange (Int_t rback) override
	Set the correct window size for lego and surface plots.
void	ResizePad () override
	Recompute window for perspective view.
void	RotateView (Double_t phi, Double_t theta, TVirtualPad *pad=nullptr) override
	API to rotate view and adjust the pad provided it the current one.
void	SetAutoRange (Bool_t autorange=kTRUE) override
void	SetAxisNDC (const Double_t *x1, const Double_t *x2, const Double_t *y1, const Double_t *y2, const Double_t *z1, const Double_t *z2) override
	Store axis coordinates in the NDC system.
void	SetDefaultWindow () override
	Set default viewing window.
void	SetDproj (Double_t dproj) override
void	SetDview (Double_t dview) override
void	SetLatitude (Double_t latitude) override
void	SetLongitude (Double_t longitude) override
void	SetOutlineToCube () override
	This is a function which creates default outline.
void	SetParallel () override
	Set the parallel option (default).
void	SetPerspective () override
	Set perspective option.
void	SetPsi (Double_t psi) override
void	SetRange (const Double_t *min, const Double_t *max) override
	Set Range function.
void	SetRange (Double_t x0, Double_t y0, Double_t z0, Double_t x1, Double_t y1, Double_t z1, Int_t flag=0) override
	Set 3-D View range.
void	SetSystem (Int_t system) override
void	SetView (Double_t longitude, Double_t latitude, Double_t psi, Int_t &irep) override
	Set view parameters.
void	SetViewChanged (Bool_t flag=kTRUE) override
void	SetWindow (Double_t u0, Double_t v0, Double_t du, Double_t dv) override
	Set viewing window.
void	ShowAxis () override
void	Side () override
void	SideView (TVirtualPad *pad=nullptr) override
	Set to side view.
void	ToggleRulers (TVirtualPad *pad=nullptr) override
	Turn on /off 3D axis.
void	ToggleZoom (TVirtualPad *pad=nullptr) override
	Turn on /off the interactive option to Zoom / Move / Change attributes of 3D axis correspond this view.
void	Top () override
void	TopView (TVirtualPad *pad=nullptr) override
	Set to top view.
void	UnZoom () override
void	UnzoomView (TVirtualPad *pad=nullptr, Double_t unZoomFactor=1.25) override
	unZOOM this view.
void	WCtoNDC (const Double_t *pw, Double_t *pn) override
	Transfer point from world to normalized coordinates.
void	WCtoNDC (const Float_t *pw, Float_t *pn) override
	Transfer point from world to normalized coordinates.
void	Zoom () override
void	ZoomIn () override
	Zoom in.
void	ZoomMove () override
void	ZoomOut () override
	Zoom out.
void	ZoomView (TVirtualPad *pad=nullptr, Double_t zoomFactor=1.25) override
	ZOOM this view.
Public Member Functions inherited from TView
	TView ()
	~TView () override=default
TClass *	IsA () const override
void	Streamer (TBuffer &) override
	Stream an object of class TObject.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.
	TObject (const TObject &object)
	TObject copy ctor.
virtual	~TObject ()
	TObject destructor.
void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.
virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.
virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.
ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.
virtual const char *	ClassName () const
	Returns name of class to which the object belongs.
virtual void	Clear (Option_t *="")
virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility.
virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.
virtual void	Copy (TObject &object) const
	Copy this to obj.
virtual void	Delete (Option_t *option="")
	Delete this object.
virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.
virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.
virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.
virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad with: gROOT->SetSelectedPad(c1).
virtual void	Dump () const
	Dump contents of object on stdout.
virtual void	Error (const char *method, const char *msgfmt,...) const
	Issue error message.
virtual void	Execute (const char *method, const char *params, Int_t *error=nullptr)
	Execute method on this object with the given parameter string, e.g.
virtual void	Execute (TMethod *method, TObjArray *params, Int_t *error=nullptr)
	Execute method on this object with parameters stored in the TObjArray.
virtual void	Fatal (const char *method, const char *msgfmt,...) const
	Issue fatal error message.
virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.
virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.
virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.
virtual const char *	GetIconName () const
	Returns mime type name of object.
virtual const char *	GetName () const
	Returns name of object.
virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).
virtual Option_t *	GetOption () const
virtual const char *	GetTitle () const
	Returns title of object.
virtual UInt_t	GetUniqueID () const
	Return the unique object id.
virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.
virtual ULong_t	Hash () const
	Return hash value for this object.
Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.
virtual void	Info (const char *method, const char *msgfmt,...) const
	Issue info message.
virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".
virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.
virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.
void	InvertBit (UInt_t f)
Bool_t	IsDestructed () const
	IsDestructed.
virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).
virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
R__ALWAYS_INLINE Bool_t	IsOnHeap () const
virtual Bool_t	IsSortable () const
R__ALWAYS_INLINE Bool_t	IsZombie () const
virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.
void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).
virtual Bool_t	Notify ()
	This method must be overridden to handle object notification (the base implementation is no-op).
void	Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.
void	operator delete (void *ptr)
	Operator delete.
void	operator delete (void *ptr, void *vp)
	Only called by placement new when throwing an exception.
void	operator delete[] (void *ptr)
	Operator delete [].
void	operator delete[] (void *ptr, void *vp)
	Only called by placement new[] when throwing an exception.
void *	operator new (size_t sz)
void *	operator new (size_t sz, void *vp)
void *	operator new[] (size_t sz)
void *	operator new[] (size_t sz, void *vp)
TObject &	operator= (const TObject &rhs)
	TObject assignment operator.
virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.
virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.
virtual void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.
virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.
virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.
void	ResetBit (UInt_t f)
virtual void	SaveAs (const char *filename="", Option_t *option="") const
	Save this object in the file specified by filename.
virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".
void	SetBit (UInt_t f)
void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.
virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.
virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)
virtual void	SysError (const char *method, const char *msgfmt,...) const
	Issue system error message.
R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const
Int_t	TestBits (UInt_t f) const
virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.
virtual void	Warning (const char *method, const char *msgfmt,...) const
	Issue warning message.
virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.
virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.
Public Member Functions inherited from TAttLine
	TAttLine ()
	AttLine default constructor.
	TAttLine (Color_t lcolor, Style_t lstyle, Width_t lwidth)
	AttLine normal constructor.
virtual	~TAttLine ()
	AttLine destructor.
void	Copy (TAttLine &attline) const
	Copy this line attributes to a new TAttLine.
Int_t	DistancetoLine (Int_t px, Int_t py, Double_t xp1, Double_t yp1, Double_t xp2, Double_t yp2)
	Compute distance from point px,py to a line.
virtual Color_t	GetLineColor () const
	Return the line color.
virtual Style_t	GetLineStyle () const
	Return the line style.
virtual Width_t	GetLineWidth () const
	Return the line width.
virtual void	Modify ()
	Change current line attributes if necessary.
virtual void	ResetAttLine (Option_t *option="")
	Reset this line attributes to default values.
virtual void	SaveLineAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1, Int_t widdef=1)
	Save line attributes as C++ statement(s) on output stream out.
virtual void	SetLineAttributes ()
	Invoke the DialogCanvas Line attributes.
virtual void	SetLineColor (Color_t lcolor)
	Set the line color.
virtual void	SetLineColorAlpha (Color_t lcolor, Float_t lalpha)
	Set a transparent line color.
virtual void	SetLineStyle (Style_t lstyle)
	Set the line style.
virtual void	SetLineWidth (Width_t lwidth)
	Set the line width.
void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Static Public Member Functions
static void	AdjustPad (TVirtualPad *pad=nullptr)
	Force the current pad to be updated.
Static Public Member Functions inherited from TView
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static TView *	CreateView (Int_t system=1, const Double_t *rmin=nullptr, const Double_t *rmax=nullptr)
	Create a concrete default 3-d view via the plug-in manager.
static const char *	DeclFileName ()
Static Public Member Functions inherited from TObject
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.
static Bool_t	GetObjectStat ()
	Get status of object stat flag.
static void	SetDtorOnly (void *obj)
	Set destructor only flag.
static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.
Static Public Member Functions inherited from TAttLine
static TClass *	Class ()
static const char *	Class_Name ()
static constexpr Version_t	Class_Version ()
static const char *	DeclFileName ()

Protected Member Functions
	TView3D (const TView3D &)
	Set to TRUE after ExecuteRotateView.
TView3D &	operator= (const TView3D &)
	Assignment operator.
void	ResetView (Double_t longitude, Double_t latitude, Double_t psi, Int_t &irep)
	Set view direction (in spherical coordinates).
Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char *location, const char *fmt, va_list va) const
	Interface to ErrorHandler (protected).
void	MakeZombie ()

Protected Attributes
Bool_t	fAutoRange
Bool_t	fChanged
Bool_t	fDefaultOutline
Double_t	fDproj
Double_t	fDview
Double_t	fLatitude
Double_t	fLongitude
TSeqCollection *	fOutline
Double_t	fPsi
Double_t	fRmax [3]
Double_t	fRmin [3]
Int_t	fSystem
Double_t	fTB [16]
Double_t	fTback [16]
Double_t	fTN [16]
Double_t	fTnorm [16]
Double_t	fUpix
Double_t	fUVcoord [4]
Double_t	fVpix
Double_t	fX1 [3]
Double_t	fX2 [3]
Double_t	fY1 [3]
Double_t	fY2 [3]
Double_t	fZ1 [3]
Double_t	fZ2 [3]
Protected Attributes inherited from TAttLine
Color_t	fLineColor
	Line color.
Style_t	fLineStyle
	Line style.
Width_t	fLineWidth
	Line width.

Additional Inherited Members
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

#include <TView3D.h>

Inheritance diagram for TView3D:

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
kPerspective

Definition at line 66 of file TView3D.h.

Constructor & Destructor Documentation

TView3D() [1/3]

TView3D::TView3D ( const TView3D &  tv )

protected

Set to TRUE after ExecuteRotateView.

Copy constructor.

Definition at line 197 of file TView3D.cxx.

TView3D() [2/3]

TView3D::TView3D

(

)

Default constructor.

Definition at line 109 of file TView3D.cxx.

TView3D() [3/3]

TView3D::TView3D	(	Int_t	system,
		const Double_t *	rmin,
		const Double_t *	rmax
	)

TView3D constructor.

Creates a 3-D view in the current pad rmin[3], rmax[3] are the limits of the object depending on the selected coordinate system

Before drawing a 3-D object in a pad, a 3-D view must be created. Note that a view is automatically created when drawing legos or surfaces.

The coordinate system is selected via system:

• system = 1 Cartesian
• system = 2 Polar
• system = 3 Cylindrical
• system = 4 Spherical
• system = 5 PseudoRapidity/Phi

Definition at line 153 of file TView3D.cxx.

~TView3D()

TView3D::~TView3D ( )

override

TView3D default destructor.

Definition at line 276 of file TView3D.cxx.

Member Function Documentation

AdjustPad()

void TView3D::AdjustPad ( TVirtualPad *  pad = nullptr )

static

Force the current pad to be updated.

Definition at line 1539 of file TView3D.cxx.

AdjustScales()

void TView3D::AdjustScales ( TVirtualPad *  pad = nullptr )

overridevirtual

Adjust all sides of view in respect of the biggest one.

Implements TView.

Definition at line 1617 of file TView3D.cxx.

AxisVertex()

void TView3D::AxisVertex ( Double_t  ang, Double_t *  av, Int_t &  ix1, Int_t &  ix2, Int_t &  iy1, Int_t &  iy2, Int_t &  iz1, Int_t &  iz2  )

overridevirtual

Define axis vertices.

Input:

• ANG - angle between X and Y axis (not used anymore)

  Output:

• AV(3,8) - axis vertices
• IX1 - 1st point of X-axis (x-min)
• IX2 - 2nd point of X-axis (x-max)
• IY1 - 1st point of Y-axis (y-min)
• IY2 - 2nd point of Y-axis (y-max)
• IZ1 - 1st point of Z-axis (z-min)
• IZ2 - 2nd point of Z-axis (z-max)

Implements TView.

Definition at line 298 of file TView3D.cxx.

Centered()

void TView3D::Centered ( )

overridevirtual

Implements TView.

Definition at line 1930 of file TView3D.cxx.

Centered3DImages()

void TView3D::Centered3DImages ( TVirtualPad *  pad = nullptr )

overridevirtual

Move view into the center of the scene.

Implements TView.

Definition at line 1635 of file TView3D.cxx.

ClassDefOverride()

TView3D::ClassDefOverride	(	TView3D	,
		3
	)

DefinePerspectiveView()

void TView3D::DefinePerspectiveView ( )

overridevirtual

Define perspective view.

Compute transformation matrix from world coordinates to normalized coordinates (-1 to +1)

Input :

• theta, phi - spherical angles giving the direction of projection
• psi - screen rotation angle
• cov[3] - center of view
• dview - distance from COV to COP (center of projection)
• umin, umax, vmin, vmax - view window in projection plane
• dproj - distance from COP to projection plane
• bcut, fcut - backward/forward range w.r.t projection plane (fcut<=0)

Output :

• nper[16] - normalizing transformation

compute tr+rot to get COV in origin, view vector parallel to -Z axis, up vector parallel to Y.

          ^Yv   UP ^  proj. plane
         |        |   /|
        |        |  /  |
       |   dproj  /  x--- center of window (COW)
  COV |----------|--x--|------------> Zv
               /           | VRP'z
        /   --->      |  /
 /     VPN       |/
Xv

1. translate COP to origin of MARS : Tper = T(-copx, -copy, -copz)
2. rotate VPN : R = Rz(-psi)*Rx(-theta)*Rz(-phi) (inverse Euler)
3. left-handed screen reference to right-handed one of MARS : Trl

T12 = Tper*R*Trl

Implements TView.

Definition at line 400 of file TView3D.cxx.

DefineViewDirection()

void TView3D::DefineViewDirection ( const Double_t *  s, const Double_t *  c, Double_t  cosphi, Double_t  sinphi, Double_t  costhe, Double_t  sinthe, Double_t  cospsi, Double_t  sinpsi, Double_t *  tnorm, Double_t *  tback  )

overridevirtual

Define view direction (in spherical coordinates)

Compute transformation matrix from world coordinates to normalized coordinates (-1 to +1)

Input:

• S(3) - scale factors
• C(3) - centre of scope
• COSPHI - longitude COS
• SINPHI - longitude SIN
• COSTHE - latitude COS (angle between +Z and view direction.)
• SINTHE - latitude SIN
• COSPSI - screen plane rotation angle COS
• SINPSI - screen plane rotation angle SIN

Implements TView.

Definition at line 514 of file TView3D.cxx.

DrawOutlineCube()

void TView3D::DrawOutlineCube ( TList *  outline, Double_t *  rmin, Double_t *  rmax  )

overridevirtual

Draw the outline of a cube while rotating a 3-d object in the pad.

Implements TView.

Definition at line 620 of file TView3D.cxx.

ExecuteEvent()

void TView3D::ExecuteEvent ( Int_t  event, Int_t  px, Int_t  py  )

overridevirtual

Execute action corresponding to one event.

Implements TView.

Definition at line 628 of file TView3D.cxx.

ExecuteRotateView()

void TView3D::ExecuteRotateView ( Int_t  event, Int_t  px, Int_t  py  )

overridevirtual

Execute action corresponding to one event.

This member function is called when a object is clicked with the locator

If Left button clicked in the object area, while the button is kept down the cube representing the surrounding frame for the corresponding new latitude and longitude position is drawn.

Implements TView.

Definition at line 642 of file TView3D.cxx.

FindNormal()

void TView3D::FindNormal ( Double_t  x, Double_t  y, Double_t  z, Double_t &  zn  )

overridevirtual

Find Z component of NORMAL in normalized coordinates.

Input:

• X - X-component of NORMAL
• Y - Y-component of NORMAL
• Z - Z-component of NORMAL

Output:

• ZN - Z-component of NORMAL in normalized coordinates

Implements TView.

Definition at line 786 of file TView3D.cxx.

FindPhiSectors()

void TView3D::FindPhiSectors ( Int_t  iopt, Int_t &  kphi, Double_t *  aphi, Int_t &  iphi1, Int_t &  iphi2  )

overridevirtual

Find critical PHI sectors.

Input:

• IOPT - options:
  1. from BACK to FRONT 'BF'
  2. from FRONT to BACK 'FB'
• KPHI - number of phi sectors
• APHI(*) - PHI separators (modified internally)

Output:

• IPHI1 - initial sector
• IPHI2 - final sector

Implements TView.

Definition at line 806 of file TView3D.cxx.

FindScope()

void TView3D::FindScope ( Double_t *  scale, Double_t *  center, Int_t &  irep  )

overridevirtual

Find centre of a MIN-MAX scope and scale factors.

Output:

• SCALE(3) - scale factors
• CENTER(3) - centre
• IREP - reply (-1 if error in min-max)

Implements TView.

Definition at line 933 of file TView3D.cxx.

FindThetaSectors()

void TView3D::FindThetaSectors ( Int_t  iopt, Double_t  phi, Int_t &  kth, Double_t *  ath, Int_t &  ith1, Int_t &  ith2  )

overridevirtual

Find critical THETA sectors for given PHI sector.

Input:

• IOPT - options:
  1. from BACK to FRONT 'BF'
  2. from FRONT to BACK 'FB'
• PHI - PHI sector
• KTH - number of THETA sectors
• ATH(*) - THETA separators (modified internally)

Output:

• ITH1 - initial sector
• ITH2 - final sector

Implements TView.

Definition at line 872 of file TView3D.cxx.

Front()

void TView3D::Front ( )

overridevirtual

Implements TView.

Definition at line 1931 of file TView3D.cxx.

FrontView()

void TView3D::FrontView ( TVirtualPad *  pad = nullptr )

overridevirtual

Set to front view.

Implements TView.

Definition at line 1584 of file TView3D.cxx.

GetAutoRange()

Bool_t TView3D::GetAutoRange ( )

inlineoverridevirtual

Implements TView.

Definition at line 89 of file TView3D.h.

GetDistancetoAxis()

Int_t TView3D::GetDistancetoAxis ( Int_t  axis, Int_t  px, Int_t  py, Double_t &  ratio  )

overridevirtual

Return distance to axis from point px,py.

Algorithm:

     A(x1,y1)         P                             B(x2,y2)
     ------------------------------------------------
                      I
                      I
                      I
                      I
                     M(x,y)
 
Let us call  a = distance AM     A=a**2
             b = distance BM     B=b**2
             c = distance AB     C=c**2
             d = distance PM     D=d**2
             u = distance AP     U=u**2
             v = distance BP     V=v**2     c = u + v
 
D = A - U
D = B - V  = B -(c-u)**2
   ==> u = (A -B +C)/2c

Implements TView.

Definition at line 971 of file TView3D.cxx.

GetDproj()

Double_t TView3D::GetDproj ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 87 of file TView3D.h.

GetDview()

Double_t TView3D::GetDview ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 86 of file TView3D.h.

GetExtent()

Double_t TView3D::GetExtent ( ) const

overridevirtual

Get maximum view extent.

Implements TView.

Definition at line 1017 of file TView3D.cxx.

GetLatitude()

Double_t TView3D::GetLatitude ( )

inlineoverridevirtual

Implements TView.

Definition at line 90 of file TView3D.h.

GetLongitude()

Double_t TView3D::GetLongitude ( )

inlineoverridevirtual

Implements TView.

Definition at line 91 of file TView3D.h.

GetOutline()

TSeqCollection * TView3D::GetOutline ( )

inlineoverridevirtual

Implements TView.

Definition at line 97 of file TView3D.h.

GetPsi()

Double_t TView3D::GetPsi ( )

inlineoverridevirtual

Implements TView.

Definition at line 92 of file TView3D.h.

GetRange() [1/2]

void TView3D::GetRange ( Double_t *  min, Double_t *  max  )

overridevirtual

Get Range function.

Implements TView.

Definition at line 1037 of file TView3D.cxx.

GetRange() [2/2]

void TView3D::GetRange ( Float_t *  min, Float_t *  max  )

overridevirtual

Get Range function.

Implements TView.

Definition at line 1029 of file TView3D.cxx.

GetRmax()

Double_t * TView3D::GetRmax ( )

inlineoverridevirtual

Implements TView.

Definition at line 95 of file TView3D.h.

GetRmin()

Double_t * TView3D::GetRmin ( )

inlineoverridevirtual

Implements TView.

Definition at line 96 of file TView3D.h.

GetSystem()

Int_t TView3D::GetSystem ( )

inlineoverridevirtual

Implements TView.

Definition at line 101 of file TView3D.h.

GetTback()

Double_t * TView3D::GetTback ( )

inlineoverridevirtual

Implements TView.

Definition at line 98 of file TView3D.h.

GetTN()

Double_t * TView3D::GetTN ( )

inlineoverridevirtual

Implements TView.

Definition at line 99 of file TView3D.h.

GetTnorm()

Double_t * TView3D::GetTnorm ( )

inlineoverridevirtual

Implements TView.

Definition at line 100 of file TView3D.h.

GetWindow()

void TView3D::GetWindow ( Double_t &  u0, Double_t &  v0, Double_t &  du, Double_t &  dv  ) const

overridevirtual

Get current window extent.

Implements TView.

Definition at line 1045 of file TView3D.cxx.

GetWindowHeight()

Double_t TView3D::GetWindowHeight ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 104 of file TView3D.h.

GetWindowWidth()

Double_t TView3D::GetWindowWidth ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 103 of file TView3D.h.

IsClippedNDC()

Bool_t TView3D::IsClippedNDC ( Double_t *  p ) const

overridevirtual

Check if point is clipped in perspective view.

Implements TView.

Definition at line 1056 of file TView3D.cxx.

IsPerspective()

Bool_t TView3D::IsPerspective ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 109 of file TView3D.h.

IsViewChanged()

Bool_t TView3D::IsViewChanged ( ) const

inlineoverridevirtual

Implements TView.

Definition at line 110 of file TView3D.h.

MoveFocus()

void TView3D::MoveFocus ( Double_t *  cov, Double_t  dx, Double_t  dy, Double_t  dz, Int_t  nsteps = 10, Double_t  dlong = 0, Double_t  dlat = 0, Double_t  dpsi = 0  )

overridevirtual

Move focus to a different box position and extent in nsteps.

Perform rotation with dlat,dlong,dpsi at each step.

Implements TView.

Definition at line 1683 of file TView3D.cxx.

MoveViewCommand()

void TView3D::MoveViewCommand ( Char_t  option, Int_t  count = 1  )

overridevirtual

• 'a' increase scale factor (clip cube borders)
• 's' decrease scale factor (clip cube borders)

Implements TView.

Definition at line 1739 of file TView3D.cxx.

MoveWindow()

void TView3D::MoveWindow ( Char_t  option )

overridevirtual

Move view window :

• l,L - left
• h,H - right
• u,U - down
• i,I - up

Implements TView.

Definition at line 1787 of file TView3D.cxx.

NDCtoWC() [1/2]

void TView3D::NDCtoWC ( const Double_t *  pn, Double_t *  pw  )

overridevirtual

Transfer point from normalized to world coordinates.

Input:

• PN(3) - point in world coordinate system
• PW(3) - point in normalized coordinate system

Implements TView.

Definition at line 1085 of file TView3D.cxx.

NDCtoWC() [2/2]

void TView3D::NDCtoWC ( const Float_t *  pn, Float_t *  pw  )

overridevirtual

Transfer point from normalized to world coordinates.

Input:

• PN(3) - point in world coordinate system
• PW(3) - point in normalized coordinate system

Implements TView.

Definition at line 1070 of file TView3D.cxx.

NormalWCtoNDC() [1/2]

void TView3D::NormalWCtoNDC ( const Double_t *  pw, Double_t *  pn  )

overridevirtual

Transfer vector of NORMAL from word to normalized coordinates.

Input:

• PW(3) - vector of NORMAL in word coordinate system
• PN(3) - vector of NORMAL in normalized coordinate system

Implements TView.

Definition at line 1128 of file TView3D.cxx.

NormalWCtoNDC() [2/2]

void TView3D::NormalWCtoNDC ( const Float_t *  pw, Float_t *  pn  )

overridevirtual

Transfer vector of NORMAL from word to normalized coordinates.

Input:

• PW(3) - vector of NORMAL in word coordinate system
• PN(3) - vector of NORMAL in normalized coordinate system

Implements TView.

Definition at line 1100 of file TView3D.cxx.

operator=()

TView3D & TView3D::operator= ( const TView3D &  tv )

protected

Assignment operator.

Definition at line 235 of file TView3D.cxx.

PadRange()

void TView3D::PadRange ( Int_t  rback )

overridevirtual

Set the correct window size for lego and surface plots.

Set the correct window size for lego and surface plots. And draw the background if necessary.

Input parameters:

• RBACK : Background colour

Implements TView.

Definition at line 1158 of file TView3D.cxx.

ResetView()

void TView3D::ResetView ( Double_t  longitude, Double_t  latitude, Double_t  psi, Int_t &  irep  )

protected

Set view direction (in spherical coordinates).

Input

• PHI - longitude
• THETA - latitude (angle between +Z and view direction)
• PSI - rotation in screen plane

Output:

• IREP - reply (-1 if error in min-max)

Errors: error in min-max scope

Definition at line 1437 of file TView3D.cxx.

ResizePad()

void TView3D::ResizePad ( )

overridevirtual

Recompute window for perspective view.

Implements TView.

Definition at line 1405 of file TView3D.cxx.

RotateView()

void TView3D::RotateView ( Double_t  phi, Double_t  theta, TVirtualPad *  pad = nullptr  )

overridevirtual

API to rotate view and adjust the pad provided it the current one.

Implements TView.

Definition at line 1555 of file TView3D.cxx.

SetAutoRange()

void TView3D::SetAutoRange ( Bool_t  autorange = kTRUE )

inlineoverridevirtual

Implements TView.

Definition at line 117 of file TView3D.h.

SetAxisNDC()

void TView3D::SetAxisNDC ( const Double_t *  x1, const Double_t *  x2, const Double_t *  y1, const Double_t *  y2, const Double_t *  z1, const Double_t *  z2  )

overridevirtual

Store axis coordinates in the NDC system.

Implements TView.

Definition at line 1237 of file TView3D.cxx.

SetDefaultWindow()

void TView3D::SetDefaultWindow ( )

overridevirtual

Set default viewing window.

Implements TView.

Definition at line 1252 of file TView3D.cxx.

SetDproj()

void TView3D::SetDproj ( Double_t  dproj )

inlineoverridevirtual

Implements TView.

Definition at line 121 of file TView3D.h.

SetDview()

void TView3D::SetDview ( Double_t  dview )

inlineoverridevirtual

Implements TView.

Definition at line 120 of file TView3D.h.

SetLatitude()

void TView3D::SetLatitude ( Double_t  latitude )

inlineoverridevirtual

Implements TView.

Definition at line 122 of file TView3D.h.

SetLongitude()

void TView3D::SetLongitude ( Double_t  longitude )

inlineoverridevirtual

Implements TView.

Definition at line 123 of file TView3D.h.

SetOutlineToCube()

void TView3D::SetOutlineToCube ( )

overridevirtual

This is a function which creates default outline.

x = fRmin[0]        X = fRmax[0]
y = fRmin[1]        Y = fRmax[1]
z = fRmin[2]        Z = fRmax[2]
 
         (x,Y,Z) +---------+ (X,Y,Z)
                /         /|
               /         / |
              /         /  |
     (x,y,Z) +---------+   |
             |         |   + (X,Y,z)
             |         |  /
             |         | /
             |         |/
             +---------+
          (x,y,z)   (X,y,z)

Implements TView.

Definition at line 1292 of file TView3D.cxx.

SetParallel()

void TView3D::SetParallel ( )

overridevirtual

Set the parallel option (default).

Implements TView.

Definition at line 1304 of file TView3D.cxx.

SetPerspective()

void TView3D::SetPerspective ( )

overridevirtual

Set perspective option.

Implements TView.

Definition at line 1315 of file TView3D.cxx.

SetPsi()

void TView3D::SetPsi ( Double_t  psi )

inlineoverridevirtual

Implements TView.

Definition at line 124 of file TView3D.h.

SetRange() [1/2]

void TView3D::SetRange ( const Double_t *  min, const Double_t *  max  )

overridevirtual

Set Range function.

Implements TView.

Definition at line 1327 of file TView3D.cxx.

SetRange() [2/2]

void TView3D::SetRange ( Double_t  x0, Double_t  y0, Double_t  z0, Double_t  x1, Double_t  y1, Double_t  z1, Int_t  flag = 0  )

overridevirtual

Set 3-D View range.

Input:

• x0, y0, z0 are minimum coordinates
• x1, y1, z1 are maximum coordinates
• flag values are:
  • 0 (set always) <- default
  • 1 (shrink view)
  • 2 (expand view)

Implements TView.

Definition at line 1350 of file TView3D.cxx.

SetSystem()

void TView3D::SetSystem ( Int_t  system )

inlineoverridevirtual

Implements TView.

Definition at line 130 of file TView3D.h.

SetView()

void TView3D::SetView ( Double_t  longitude, Double_t  latitude, Double_t  psi, Int_t &  irep  )

overridevirtual

Set view parameters.

Implements TView.

Definition at line 1397 of file TView3D.cxx.

SetViewChanged()

void TView3D::SetViewChanged ( Bool_t  flag = kTRUE )

inlineoverridevirtual

Implements TView.

Definition at line 132 of file TView3D.h.

SetWindow()

void TView3D::SetWindow ( Double_t  u0, Double_t  v0, Double_t  du, Double_t  dv  )

overridevirtual

Set viewing window.

Implements TView.

Definition at line 1386 of file TView3D.cxx.

ShowAxis()

void TView3D::ShowAxis ( )

overridevirtual

Implements TView.

Definition at line 1932 of file TView3D.cxx.

Side()

void TView3D::Side ( )

overridevirtual

Implements TView.

Definition at line 1933 of file TView3D.cxx.

SideView()

void TView3D::SideView ( TVirtualPad *  pad = nullptr )

overridevirtual

Set to side view.

Implements TView.

Definition at line 1576 of file TView3D.cxx.

ToggleRulers()

void TView3D::ToggleRulers ( TVirtualPad *  pad = nullptr )

overridevirtual

Turn on /off 3D axis.

Implements TView.

Definition at line 1600 of file TView3D.cxx.

ToggleZoom()

void TView3D::ToggleZoom ( TVirtualPad *  pad = nullptr )

overridevirtual

Turn on /off the interactive option to Zoom / Move / Change attributes of 3D axis correspond this view.

Implements TView.

Definition at line 1609 of file TView3D.cxx.

Top()

void TView3D::Top ( )

overridevirtual

Implements TView.

Definition at line 1934 of file TView3D.cxx.

TopView()

void TView3D::TopView ( TVirtualPad *  pad = nullptr )

overridevirtual

Set to top view.

Implements TView.

Definition at line 1592 of file TView3D.cxx.

UnZoom()

void TView3D::UnZoom ( )

overridevirtual

Implements TView.

Definition at line 1937 of file TView3D.cxx.

UnzoomView()

void TView3D::UnzoomView ( TVirtualPad *  pad = nullptr, Double_t  unZoomFactor = 1.25  )

overridevirtual

unZOOM this view.

Implements TView.

Definition at line 1651 of file TView3D.cxx.

WCtoNDC() [1/2]

void TView3D::WCtoNDC ( const Double_t *  pw, Double_t *  pn  )

overridevirtual

Transfer point from world to normalized coordinates.

Input:

• PW(3) - point in world coordinate system
• PN(3) - point in normalized coordinate system

Implements TView.

Definition at line 1511 of file TView3D.cxx.

WCtoNDC() [2/2]

void TView3D::WCtoNDC ( const Float_t *  pw, Float_t *  pn  )

overridevirtual

Transfer point from world to normalized coordinates.

Input:

• PW(3) - point in world coordinate system
• PN(3) - point in normalized coordinate system

Implements TView.

Definition at line 1479 of file TView3D.cxx.

Zoom()

void TView3D::Zoom ( )

overridevirtual

Implements TView.

Definition at line 1936 of file TView3D.cxx.

ZoomIn()

void TView3D::ZoomIn ( )

overridevirtual

Zoom in.

Implements TView.

Definition at line 1822 of file TView3D.cxx.

ZoomMove()

void TView3D::ZoomMove ( )

overridevirtual

Implements TView.

Definition at line 1935 of file TView3D.cxx.

ZoomOut()

void TView3D::ZoomOut ( )

overridevirtual

Zoom out.

Implements TView.

Definition at line 1842 of file TView3D.cxx.

ZoomView()

void TView3D::ZoomView ( TVirtualPad *  pad = nullptr, Double_t  zoomFactor = 1.25  )

overridevirtual

ZOOM this view.

Implements TView.

Definition at line 1660 of file TView3D.cxx.

Member Data Documentation

fAutoRange

Bool_t TView3D::fAutoRange

protected

Definition at line 55 of file TView3D.h.

fChanged

Bool_t TView3D::fChanged

protected

Definition at line 56 of file TView3D.h.

fDefaultOutline

Bool_t TView3D::fDefaultOutline

protected

Definition at line 54 of file TView3D.h.

fDproj

Double_t TView3D::fDproj

protected

Definition at line 36 of file TView3D.h.

fDview

Double_t TView3D::fDview

protected

Definition at line 35 of file TView3D.h.

fLatitude

Double_t TView3D::fLatitude

protected

Definition at line 32 of file TView3D.h.

fLongitude

Double_t TView3D::fLongitude

protected

Definition at line 33 of file TView3D.h.

fOutline

TSeqCollection* TView3D::fOutline

protected

Definition at line 53 of file TView3D.h.

fPsi

Double_t TView3D::fPsi

protected

Definition at line 34 of file TView3D.h.

fRmax

Double_t TView3D::fRmax[3]

protected

Definition at line 41 of file TView3D.h.

fRmin

Double_t TView3D::fRmin[3]

protected

Definition at line 42 of file TView3D.h.

fSystem

Int_t TView3D::fSystem

protected

Definition at line 52 of file TView3D.h.

fTB

Double_t TView3D::fTB[16]

protected

Definition at line 40 of file TView3D.h.

fTback

Double_t TView3D::fTback[16]

protected

Definition at line 45 of file TView3D.h.

fTN

Double_t TView3D::fTN[16]

protected

Definition at line 39 of file TView3D.h.

fTnorm

Double_t TView3D::fTnorm[16]

protected

Definition at line 44 of file TView3D.h.

fUpix

Double_t TView3D::fUpix

protected

Definition at line 37 of file TView3D.h.

fUVcoord

Double_t TView3D::fUVcoord[4]

protected

Definition at line 43 of file TView3D.h.

fVpix

Double_t TView3D::fVpix

protected

Definition at line 38 of file TView3D.h.

fX1

Double_t TView3D::fX1[3]

protected

Definition at line 46 of file TView3D.h.

fX2

Double_t TView3D::fX2[3]

protected

Definition at line 47 of file TView3D.h.

fY1

Double_t TView3D::fY1[3]

protected

Definition at line 48 of file TView3D.h.

fY2

Double_t TView3D::fY2[3]

protected

Definition at line 49 of file TView3D.h.

fZ1

Double_t TView3D::fZ1[3]

protected

Definition at line 50 of file TView3D.h.

fZ2

Double_t TView3D::fZ2[3]

protected

Definition at line 51 of file TView3D.h.

Libraries for TView3D:

---

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

• graf3d/g3d/inc/TView3D.h
• graf3d/g3d/src/TView3D.cxx