ROOT 6.10/09 Reference Guide |
TGeometry description.
The Geometry class describes the geometry of a detector. The current implementation supports the GEANT3 style description. A special program provided in the ROOT utilities (toroot) can be used to automatically translate a GEANT detector geometry into a ROOT geometry.
a Geometry object is entered into the list of geometries into the ROOT main object (see TROOT description) when the TGeometry constructor is invoked. Several geometries may coexist in memory. / A Geometry object consist of the following linked lists:
Only the Build and Draw functions for a geometry are currently supported.
The conversion program from Geant to Root has been added in the list of utilities in utils directory.(see g2root) The executable module of g2root can be found in $ROOTSYS/bin/g2root.
To use this conversion program, type the shell command:
for example
will convert the GEANT RZ file na49.geom into a ROOT macro na49.C
To generate the Geometry structure within Root, do:
Note: all keys are also written on closing of the file, gna49.Close or when the program exits, Root closes all open files correctly. Once this file has been written, in a subsequent session, simply do:
The figure below shows the geometry above using the x3d viewer. This x3d viewer is invoked by selecting "View x3d" in the View menu of a canvas (See example of this tool bar in TCanvas).
Definition at line 39 of file TGeometry.h.
Public Member Functions | |
TGeometry () | |
Geometry default constructor. More... | |
TGeometry (const char *name, const char *title) | |
Geometry normal constructor. More... | |
virtual | ~TGeometry () |
Geometry default destructor. More... | |
virtual void | Browse (TBrowser *b) |
Browse. More... | |
virtual void | cd (const char *path=0) |
Change Current Geometry to this. More... | |
virtual void | Draw (Option_t *option="") |
Draw this Geometry. More... | |
virtual TObject * | FindObject (const char *name) const |
Search object identified by name in the geometry tree. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Find object in a geometry node, material, etc. More... | |
Int_t | GeomLevel () const |
Float_t | GetBomb () const |
TRotMatrix * | GetCurrentMatrix () const |
TNode * | GetCurrentNode () const |
TRotMatrix * | GetCurrentPosition (Double_t *x, Double_t *y, Double_t *z) const |
TRotMatrix * | GetCurrentPosition (Float_t *x, Float_t *y, Float_t *z) const |
Bool_t | GetCurrentReflection () const |
THashList * | GetListOfMaterials () const |
THashList * | GetListOfMatrices () const |
TList * | GetListOfNodes () const |
THashList * | GetListOfShapes () const |
TMaterial * | GetMaterial (const char *name) const |
Return pointer to Material with name. More... | |
TMaterial * | GetMaterialByNumber (Int_t number) const |
Return pointer to Material with number. More... | |
TNode * | GetNode (const char *name) const |
Return pointer to node with name in the geometry tree. More... | |
TRotMatrix * | GetRotMatrix (const char *name) const |
Return pointer to RotMatrix with name. More... | |
TRotMatrix * | GetRotMatrixByNumber (Int_t number) const |
Return pointer to RotMatrix with number. More... | |
TShape * | GetShape (const char *name) const |
Return pointer to Shape with name. More... | |
TShape * | GetShapeByNumber (Int_t number) const |
Return pointer to Shape with number. More... | |
Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
virtual void | Local2Master (Double_t *local, Double_t *master) |
Convert one point from local system to master reference system. More... | |
virtual void | Local2Master (Float_t *local, Float_t *master) |
Convert one point from local system to master reference system. More... | |
virtual void | ls (Option_t *option="rsn2") const |
List this geometry. More... | |
virtual void | Master2Local (Double_t *master, Double_t *local) |
Convert one point from master system to local reference system. More... | |
virtual void | Master2Local (Float_t *master, Float_t *local) |
Convert one point from master system to local reference system. More... | |
virtual void | Node (const char *name, const char *title, const char *shapename, Double_t x=0, Double_t y=0, Double_t z=0, const char *matrixname="", Option_t *option="") |
Add a node to the current node in this geometry. More... | |
virtual Int_t | PopLevel () |
virtual Int_t | PushLevel () |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove object from a Geometry list. More... | |
virtual void | SetBomb (Float_t bomb=1.4) |
virtual void | SetCurrentNode (TNode *node) |
virtual void | SetGeomLevel (Int_t level=0) |
virtual void | SetMatrix (TRotMatrix *matrix=0) |
virtual void | SetPosition (TRotMatrix *matrix, Double_t x=0, Double_t y=0, Double_t z=0) |
virtual void | SetPosition (TRotMatrix *matrix, Float_t x, Float_t y, Float_t z) |
virtual void | SetPosition (Double_t x, Double_t y, Double_t z) |
virtual void | SetPosition (Float_t x, Float_t y, Float_t z) |
virtual void | UpdateMatrix (TNode *node) |
Update global rotation matrix/translation vector for this node this function must be called before invoking Local2Master. More... | |
virtual void | UpdateTempMatrix (Double_t x=0, Double_t y=0, Double_t z=0, TRotMatrix *matrix=0) |
Update temp matrix. More... | |
virtual void | UpdateTempMatrix (Double_t x, Double_t y, Double_t z, Double_t *matrix, Bool_t isReflection=kFALSE) |
Update temp matrix. More... | |
Public Member Functions inherited from TNamed | |
TNamed () | |
TNamed (const char *name, const char *title) | |
TNamed (const TString &name, const TString &title) | |
TNamed (const TNamed &named) | |
TNamed copy ctor. More... | |
virtual | ~TNamed () |
virtual void | Clear (Option_t *option="") |
Set name and title to empty strings (""). More... | |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare two TNamed objects. More... | |
virtual void | Copy (TObject &named) const |
Copy this to obj. More... | |
virtual void | FillBuffer (char *&buffer) |
Encode TNamed into output buffer. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual Bool_t | IsSortable () const |
TNamed & | operator= (const TNamed &rhs) |
TNamed assignment operator. More... | |
virtual void | Print (Option_t *option="") const |
Print TNamed name and title. More... | |
virtual void | SetName (const char *name) |
Set the name of the TNamed. More... | |
virtual void | SetNameTitle (const char *name, const char *title) |
Set all the TNamed parameters (name and title). More... | |
virtual void | SetTitle (const char *title="") |
Set the title of the TNamed. More... | |
virtual Int_t | Sizeof () const |
Return size of the TNamed part of the TObject. More... | |
Public Member Functions inherited from TObject | |
TObject () | |
TObject constructor. More... | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad) . More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual Option_t * | GetOption () const |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
void | InvertBit (UInt_t f) |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
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). More... | |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
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. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
void | ResetBit (UInt_t f) |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
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. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
Static Public Member Functions | |
static TObjArray * | Get (const char *name) |
Static function called by TROOT to search name in the geometry. More... | |
static void | UpdateTempMatrix (Double_t *dx1, Double_t *rmat1, Double_t x, Double_t y, Double_t z, Double_t *matrix, Double_t *dxnew, Double_t *rmatnew) |
Compute new translation vector and global matrix. More... | |
Static Public Member Functions inherited from TObject | |
static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
Protected Member Functions | |
TGeometry (const TGeometry &) | |
copy constructor More... | |
TGeometry & | operator= (const TGeometry &) |
assignment operator More... | |
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). More... | |
void | MakeZombie () |
Private Attributes | |
Float_t | fBomb |
Pointers to shapes. More... | |
TNode * | fCurrentNode |
Pointers to current rotation matrices. More... | |
Int_t | fGeomLevel |
Bool_t | fIsReflection [kMAXLEVELS] |
TMaterial ** | fMaterialPointer |
Pointer to current node. More... | |
THashList * | fMaterials |
THashList * | fMatrices |
TRotMatrix * | fMatrix |
TRotMatrix ** | fMatrixPointer |
Pointers to materials. More... | |
TList * | fNodes |
Double_t | fRotMatrix [kMAXLEVELS][kMatrixSize] |
TShape ** | fShapePointer |
Pointers to rotation matrices. More... | |
THashList * | fShapes |
Double_t | fTranslation [kMAXLEVELS][kVectorSize] |
Double_t | fX |
Double_t | fY |
Double_t | fZ |
The global translation of the current node. More... | |
Additional Inherited Members | |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
Protected Attributes inherited from TNamed | |
TString | fName |
TString | fTitle |
#include <TGeometry.h>
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protected |
copy constructor
Definition at line 139 of file TGeometry.cxx.
TGeometry::TGeometry | ( | ) |
Geometry default constructor.
Definition at line 96 of file TGeometry.cxx.
TGeometry::TGeometry | ( | const char * | name, |
const char * | title | ||
) |
Geometry normal constructor.
Definition at line 117 of file TGeometry.cxx.
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Geometry default destructor.
Definition at line 200 of file TGeometry.cxx.
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Change Current Geometry to this.
Definition at line 246 of file TGeometry.cxx.
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Search object identified by name in the geometry tree.
Reimplemented from TObject.
Definition at line 273 of file TGeometry.cxx.
Find object in a geometry node, material, etc.
Reimplemented from TObject.
Definition at line 264 of file TGeometry.cxx.
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Definition at line 74 of file TGeometry.h.
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Static function called by TROOT to search name in the geometry.
Returns a TObjArray containing a pointer to the found object and a pointer to the container where the object was found.
Definition at line 285 of file TGeometry.cxx.
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Definition at line 73 of file TGeometry.h.
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Definition at line 123 of file TGeometry.h.
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Definition at line 79 of file TGeometry.h.
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Definition at line 127 of file TGeometry.h.
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Definition at line 131 of file TGeometry.h.
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Definition at line 135 of file TGeometry.h.
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Definition at line 77 of file TGeometry.h.
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Definition at line 78 of file TGeometry.h.
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Definition at line 76 of file TGeometry.h.
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Definition at line 75 of file TGeometry.h.
TMaterial * TGeometry::GetMaterial | ( | const char * | name | ) | const |
Return pointer to Material with name.
Definition at line 322 of file TGeometry.cxx.
Return pointer to Material with number.
Definition at line 330 of file TGeometry.cxx.
TNode * TGeometry::GetNode | ( | const char * | name | ) | const |
Return pointer to node with name in the geometry tree.
Definition at line 345 of file TGeometry.cxx.
TRotMatrix * TGeometry::GetRotMatrix | ( | const char * | name | ) | const |
Return pointer to RotMatrix with name.
Definition at line 356 of file TGeometry.cxx.
TRotMatrix * TGeometry::GetRotMatrixByNumber | ( | Int_t | number | ) | const |
Return pointer to RotMatrix with number.
Definition at line 364 of file TGeometry.cxx.
TShape * TGeometry::GetShape | ( | const char * | name | ) | const |
Return pointer to Shape with name.
Definition at line 379 of file TGeometry.cxx.
Return pointer to Shape with number.
Definition at line 387 of file TGeometry.cxx.
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Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).
Reimplemented from TObject.
Definition at line 91 of file TGeometry.h.
Convert one point from local system to master reference system.
Note that before invoking this function, the global rotation matrix and translation vector for this node must have been computed. This is automatically done by the Paint functions. Otherwise TNode::UpdateMatrix should be called before.
Definition at line 407 of file TGeometry.cxx.
Convert one point from local system to master reference system.
Note that before invoking this function, the global rotation matrix and translation vector for this node must have been computed. This is automatically done by the Paint functions. Otherwise TNode::UpdateMatrix should be called before.
Definition at line 441 of file TGeometry.cxx.
Convert one point from master system to local reference system.
Note that before invoking this function, the global rotation matrix and translation vector for this node must have been computed. This is automatically done by the Paint functions. Otherwise TNode::UpdateMatrix should be called before.
Definition at line 503 of file TGeometry.cxx.
Convert one point from master system to local reference system.
Note that before invoking this function, the global rotation matrix and translation vector for this node must have been computed. This is automatically done by the Paint functions. Otherwise TNode::UpdateMatrix should be called before.
Definition at line 532 of file TGeometry.cxx.
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Add a node to the current node in this geometry.
Definition at line 557 of file TGeometry.cxx.
assignment operator
Definition at line 168 of file TGeometry.cxx.
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inlinevirtual |
Definition at line 100 of file TGeometry.h.
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inlinevirtual |
Definition at line 99 of file TGeometry.h.
Recursively remove object from a Geometry list.
Reimplemented from TObject.
Definition at line 565 of file TGeometry.cxx.
Definition at line 102 of file TGeometry.h.
Definition at line 103 of file TGeometry.h.
Definition at line 104 of file TGeometry.h.
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Definition at line 105 of file TGeometry.h.
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inlinevirtual |
Definition at line 147 of file TGeometry.h.
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Definition at line 152 of file TGeometry.h.
Definition at line 139 of file TGeometry.h.
Definition at line 143 of file TGeometry.h.
Update global rotation matrix/translation vector for this node this function must be called before invoking Local2Master.
Definition at line 635 of file TGeometry.cxx.
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Update temp matrix.
Definition at line 661 of file TGeometry.cxx.
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Update temp matrix.
Definition at line 675 of file TGeometry.cxx.
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Compute new translation vector and global matrix.
Definition at line 710 of file TGeometry.cxx.
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Pointers to shapes.
Definition at line 51 of file TGeometry.h.
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Pointers to current rotation matrices.
Definition at line 47 of file TGeometry.h.
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Definition at line 52 of file TGeometry.h.
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Definition at line 58 of file TGeometry.h.
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Pointer to current node.
Definition at line 48 of file TGeometry.h.
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Definition at line 42 of file TGeometry.h.
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Definition at line 43 of file TGeometry.h.
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Definition at line 46 of file TGeometry.h.
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Pointers to materials.
Definition at line 49 of file TGeometry.h.
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Definition at line 45 of file TGeometry.h.
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Definition at line 57 of file TGeometry.h.
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Pointers to rotation matrices.
Definition at line 50 of file TGeometry.h.
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Definition at line 44 of file TGeometry.h.
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Definition at line 56 of file TGeometry.h.
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Definition at line 53 of file TGeometry.h.
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Definition at line 54 of file TGeometry.h.
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The global translation of the current node.
Definition at line 55 of file TGeometry.h.