TGeoManager

class TGeoManager : public TNamed

    private:

           void BuildCache(Bool_t dummy = kFALSE, Bool_t nodeid = kFALSE)
           void BuildIdArray()
      TGeoNode* FindInCluster(Int_t* cluster, Int_t nc)
          Int_t GetTouchedCluster(Int_t start, Double_t* point, Int_t* check_list, Int_t ncheck, Int_t* result)
           void Init()
         Bool_t IsLoopingVolumes() const
           void SafetyOverlaps()
           void SetLoopVolumes(Bool_t flag = kTRUE)
           void Voxelize(Option_t* option = "0")

    public:

                          TGeoManager()
                          TGeoManager(const char* name, const char* title)
                          TGeoManager(const TGeoManager&)
                  virtual ~TGeoManager()
                    Int_t AddMaterial(const TGeoMaterial* material)
                    Int_t AddOverlap(const TNamed* ovlp)
                    Int_t AddShape(const TGeoShape* shape)
                    Int_t AddTrack(Int_t id, Int_t pdgcode, TObject* particle = 0)
                    Int_t AddTransformation(const TGeoMatrix* matrix)
                    Int_t AddVolume(TGeoVolume* volume)
                     void AnimateTracks(Double_t tmin = 0, Double_t tmax = 5E-8, Int_t nframes = 200, Option_t* option = "/*")
                     void BombTranslation(const Double_t* tr, Double_t* bombtr)
             virtual void Browse(TBrowser* b)
                     void BuildDefaultMaterials()
           virtual Bool_t cd(const char* path)
                     void CdDown(Int_t index)
                     void CdNode(Int_t nodeid)
                     void CdTop()
                     void CdUp()
                     void CheckGeometry(Option_t* option)
                     void CheckOverlaps(Double_t ovlp = 0.1, Option_t* option)
                     void CheckPoint(Double_t x = 0, Double_t y = 0, Double_t z = 0, Option_t* option)
           static TClass* Class()
                     void CleanGarbage()
                     void ClearAttributes()
                     void ClearOverlaps()
                     void ClearPhysicalNodes(Bool_t mustdelete = kFALSE)
                     void ClearShape(const TGeoShape* shape)
                     void ClearTracks()
                     void CloseGeometry(Option_t* option = "d")
                    Int_t CountNodes(const TGeoVolume* vol = 0, Int_t nlevels = 1000, Int_t option = 0)
                     void DefaultAngles()
                     void DefaultColors()
              TGeoVolume* Division(const char* name, const char* mother, Int_t iaxis, Int_t ndiv, Double_t start, Double_t step, Int_t numed = 0, Option_t* option)
                     void DrawCurrentPoint(Int_t color = 2)
                     void DrawPath(const char* path)
                     void DrawTracks(Option_t* option)
            virtual Int_t Export(const char* filename, const char* name, Option_t* option = "v")
            TGeoMaterial* FindDuplicateMaterial(const TGeoMaterial* mat) const
                TGeoNode* FindNextBoundary(Double_t stepmax = 1e30, const char* path)
                TGeoNode* FindNode(Bool_t safe_start = kTRUE)
                TGeoNode* FindNode(Double_t x, Double_t y, Double_t z)
                Double_t* FindNormal(Bool_t forward = kTRUE)
                Double_t* FindNormalFast()
                 UChar_t* GetBits()
                     void GetBombFactors(Double_t& bombx, Double_t& bomby, Double_t& bombz, Double_t& bombr) const
                    Int_t GetBombMode() const
                     void GetBranchNames(Int_t* names) const
                     void GetBranchNumbers(Int_t* copyNumbers, Int_t* volumeNumbers) const
                     void GetBranchOnlys(Int_t* isonly) const
            virtual Int_t GetByteCount(Option_t* option = "0")
           TGeoNodeCache* GetCache() const
                Double_t* GetCldir() const
                Double_t* GetCldirChecked() const
               TGeoShape* GetClippingShape() const
                Double_t* GetCurrentDirection() const
             TGeoHMatrix* GetCurrentMatrix() const
                TGeoNode* GetCurrentNode() const
                    Int_t GetCurrentNodeId() const
                Double_t* GetCurrentPoint() const
        TVirtualGeoTrack* GetCurrentTrack()
              TGeoVolume* GetCurrentVolume() const
                Double_t* GetDblBuffer(Int_t length)
      TVirtualGeoPainter* GetGeomPainter()
             TGeoHMatrix* GetGLMatrix() const
             TGeoHMatrix* GetHMatrix()
                   Int_t* GetIntBuffer(Int_t length)
          const Double_t* GetLastPoint() const
        TVirtualGeoTrack* GetLastTrack()
                    Int_t GetLevel() const
               TObjArray* GetListOfGVolumes() const
                   TList* GetListOfMaterials() const
               TObjArray* GetListOfMatrices() const
                   TList* GetListOfMedia() const
               TObjArray* GetListOfNodes()
               TObjArray* GetListOfOverlaps()
               TObjArray* GetListOfPhysicalNodes()
               TObjArray* GetListOfShapes() const
               TObjArray* GetListOfTracks() const
               TObjArray* GetListOfUVolumes() const
               TObjArray* GetListOfVolumes() const
              TGeoVolume* GetMasterVolume() const
            TGeoMaterial* GetMaterial(const char* matname) const
            TGeoMaterial* GetMaterial(Int_t id) const
                    Int_t GetMaterialIndex(const char* matname) const
                    Int_t GetMaxVisNodes() const
              TGeoMedium* GetMedium(const char* medium) const
              TGeoMedium* GetMedium(Int_t numed) const
                TGeoNode* GetMother(Int_t up = 1) const
                TGeoNode* GetNextNode() const
                    Int_t GetNNodes()
                TGeoNode* GetNode(Int_t level) const
                    Int_t GetNodeId() const
          const Double_t* GetNormal() const
                    Int_t GetNsegments() const
                    Int_t GetNtracks() const
      TVirtualGeoPainter* GetPainter() const
              TGeoVolume* GetPaintVolume() const
        TVirtualGeoTrack* GetParentTrackOfId(Int_t id) const
              const char* GetParticleName() const
              const char* GetPath() const
              const char* GetPdgName(Int_t pdg) const
        TGeoPhysicalNode* GetPhysicalNode(Int_t i) const
                 Double_t GetSafeDistance() const
                    Int_t GetSafeLevel() const
                    Int_t GetStackLevel() const
                 Double_t GetStep() const
                 Double_t GetTmax() const
                   Bool_t GetTminTmax(Double_t& tmin, Double_t& tmax) const
                TGeoNode* GetTopNode() const
              TGeoVolume* GetTopVolume() const
        TVirtualGeoTrack* GetTrack(Int_t index)
                    Int_t GetTrackIndex(Int_t id) const
        TVirtualGeoTrack* GetTrackOfId(Int_t id) const
                    Int_t GetUID(const char* volname) const
                    Int_t GetVirtualLevel()
                 Double_t GetVisDensity() const
                    Int_t GetVisLevel() const
                    Int_t GetVisOption() const
              TGeoVolume* GetVolume(const char* name) const
              TGeoVolume* GetVolume(Int_t uid) const
                   Bool_t GotoSafeLevel()
      static TGeoManager* Import(const char* filename, const char* name, Option_t* option)
                TGeoNode* InitTrack(Double_t* point, Double_t* dir)
                TGeoNode* InitTrack(Double_t x, Double_t y, Double_t z, Double_t nx, Double_t ny, Double_t nz)
          virtual TClass* IsA() const
                   Bool_t IsAnimatingTracks() const
                   Bool_t IsCheckingOverlaps() const
                   Bool_t IsClosed() const
                   Bool_t IsCurrentOverlapping() const
                   Bool_t IsDrawingExtra() const
                   Bool_t IsEntering() const
                   Bool_t IsExiting() const
           virtual Bool_t IsFolder() const
                   Bool_t IsInPhiRange() const
                   Bool_t IsMatrixReflection() const
                   Bool_t IsMatrixTransform() const
                   Bool_t IsNullStep() const
                   Bool_t IsOnBoundary() const
                   Bool_t IsOutside() const
                   Bool_t IsSameLocation(Double_t x, Double_t y, Double_t z, Bool_t change = kFALSE)
                   Bool_t IsSameLocation() const
                   Bool_t IsSamePoint(Double_t x, Double_t y, Double_t z) const
                   Bool_t IsStartSafe() const
                   Bool_t IsStepEntering() const
                   Bool_t IsStepExiting() const
                   Bool_t IsStreamingVoxels() const
                   Bool_t IsVisLeaves() const
                     void LocalToMaster(const Double_t* local, Double_t* master) const
                     void LocalToMasterBomb(const Double_t* local, Double_t* master) const
                     void LocalToMasterVect(const Double_t* local, Double_t* master) const
              TGeoVolume* MakeArb8(const char* name, const TGeoMedium* medium, Double_t dz, Double_t* vertices = 0)
              TGeoVolume* MakeBox(const char* name, const TGeoMedium* medium, Double_t dx, Double_t dy, Double_t dz)
              TGeoVolume* MakeCone(const char* name, const TGeoMedium* medium, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2)
              TGeoVolume* MakeCons(const char* name, const TGeoMedium* medium, Double_t dz, Double_t rmin1, Double_t rmax1, Double_t rmin2, Double_t rmax2, Double_t phi1, Double_t phi2)
              TGeoVolume* MakeCtub(const char* name, const TGeoMedium* medium, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2, Double_t lx, Double_t ly, Double_t lz, Double_t tx, Double_t ty, Double_t tz)
              TGeoVolume* MakeEltu(const char* name, const TGeoMedium* medium, Double_t a, Double_t b, Double_t dz)
              TGeoVolume* MakeGtra(const char* name, const TGeoMedium* medium, Double_t dz, Double_t theta, Double_t phi, Double_t twist, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2)
              TGeoVolume* MakeHype(const char* name, const TGeoMedium* medium, Double_t rin, Double_t stin, Double_t rout, Double_t stout, Double_t dz)
              TGeoVolume* MakePara(const char* name, const TGeoMedium* medium, Double_t dx, Double_t dy, Double_t dz, Double_t alpha, Double_t theta, Double_t phi)
              TGeoVolume* MakeParaboloid(const char* name, const TGeoMedium* medium, Double_t rlo, Double_t rhi, Double_t dz)
              TGeoVolume* MakePcon(const char* name, const TGeoMedium* medium, Double_t phi, Double_t dphi, Int_t nz)
              TGeoVolume* MakePgon(const char* name, const TGeoMedium* medium, Double_t phi, Double_t dphi, Int_t nedges, Int_t nz)
        TGeoPhysicalNode* MakePhysicalNode(const char* path = "0")
              TGeoVolume* MakeSphere(const char* name, const TGeoMedium* medium, Double_t rmin, Double_t rmax, Double_t themin = 0, Double_t themax = 180, Double_t phimin = 0, Double_t phimax = 360)
              TGeoVolume* MakeTorus(const char* name, const TGeoMedium* medium, Double_t r, Double_t rmin, Double_t rmax, Double_t phi1 = 0, Double_t dphi = 360)
        TVirtualGeoTrack* MakeTrack(Int_t id, Int_t pdgcode, TObject* particle)
              TGeoVolume* MakeTrap(const char* name, const TGeoMedium* medium, Double_t dz, Double_t theta, Double_t phi, Double_t h1, Double_t bl1, Double_t tl1, Double_t alpha1, Double_t h2, Double_t bl2, Double_t tl2, Double_t alpha2)
              TGeoVolume* MakeTrd1(const char* name, const TGeoMedium* medium, Double_t dx1, Double_t dx2, Double_t dy, Double_t dz)
              TGeoVolume* MakeTrd2(const char* name, const TGeoMedium* medium, Double_t dx1, Double_t dx2, Double_t dy1, Double_t dy2, Double_t dz)
              TGeoVolume* MakeTube(const char* name, const TGeoMedium* medium, Double_t rmin, Double_t rmax, Double_t dz)
              TGeoVolume* MakeTubs(const char* name, const TGeoMedium* medium, Double_t rmin, Double_t rmax, Double_t dz, Double_t phi1, Double_t phi2)
      TGeoVolumeAssembly* MakeVolumeAssembly(const char* name)
         TGeoVolumeMulti* MakeVolumeMulti(const char* name, const TGeoMedium* medium)
              TGeoVolume* MakeXtru(const char* name, const TGeoMedium* medium, Int_t nz)
                     void MasterToLocal(const Double_t* master, Double_t* local) const
                     void MasterToLocalBomb(const Double_t* master, Double_t* local) const
                     void MasterToLocalVect(const Double_t* master, Double_t* local) const
                     void MasterToTop(const Double_t* master, Double_t* top) const
            TGeoMaterial* Material(const char* name, Double_t a, Double_t z, Double_t dens, Int_t uid, Double_t radlen = 0, Double_t intlen = 0)
                     void Matrix(Int_t index, Double_t theta1, Double_t phi1, Double_t theta2, Double_t phi2, Double_t theta3, Double_t phi3)
              TGeoMedium* Medium(const char* name, Int_t numed, Int_t nmat, Int_t isvol, Int_t ifield, Double_t fieldm, Double_t tmaxfd, Double_t stemax, Double_t deemax, Double_t epsil, Double_t stmin)
            TGeoMaterial* Mixture(const char* name, Float_t* a, Float_t* z, Double_t dens, Int_t nelem, Float_t* wmat, Int_t uid)
            TGeoMaterial* Mixture(const char* name, Double_t* a, Double_t* z, Double_t dens, Int_t nelem, Double_t* wmat, Int_t uid)
                     void ModifiedPad() const
                     void Node(const char* name, Int_t nr, const char* mother, Double_t x, Double_t y, Double_t z, Int_t irot, Bool_t isOnly, Float_t* upar, Int_t npar = 0)
                     void Node(const char* name, Int_t nr, const char* mother, Double_t x, Double_t y, Double_t z, Int_t irot, Bool_t isOnly, Double_t* upar, Int_t npar = 0)
             TGeoManager& operator=(const TGeoManager&)
                     void OptimizeVoxels(const char* filename = "tgeovox.C")
             static Int_t Parse(const char* expr, TString& expr1, TString& expr2, TString& expr3)
                     void PopDummy(Int_t ipop = 9999)
                   Bool_t PopPath()
                   Bool_t PopPath(Int_t index)
                   Bool_t PopPoint()
                   Bool_t PopPoint(Int_t index)
                     void PrintOverlaps() const
                    Int_t PushPath(Int_t startlevel = 0)
                    Int_t PushPoint(Int_t startlevel = 0)
                     void RandomPoints(const TGeoVolume* vol, Int_t npoints = 10000, Option_t* option)
                     void RandomRays(Int_t nrays = 1000, Double_t startx = 0, Double_t starty = 0, Double_t startz = 0)
                     void RegisterMatrix(const TGeoMatrix* matrix)
                     void RemoveMaterial(Int_t index)
                     void ResetUserData()
                     void RestoreMasterVolume()
                 Double_t Safety(Bool_t inside = kFALSE)
                TGeoNode* SamplePoints(Int_t npoints, Double_t& dist, Double_t epsil = 1E-5, const char* g3path)
                     void SaveAttributes(const char* filename = "tgeoatt.C")
                TGeoNode* SearchNode(Bool_t downwards = kFALSE, const TGeoNode* skipnode = 0)
                     void SelectTrackingMedia()
                     void SetAnimateTracks(Bool_t flag = kTRUE)
                     void SetBombFactors(Double_t bombx = 1.3, Double_t bomby = 1.3, Double_t bombz = 1.3, Double_t bombr = 1.3)
                     void SetCache(const TGeoNodeCache* cache)
                     void SetCldirChecked(Double_t* dir)
                     void SetClipping(Bool_t flag = kTRUE)
                     void SetClippingShape(TGeoShape* clip)
                     void SetCurrentDirection(Double_t* dir)
                     void SetCurrentDirection(Double_t nx, Double_t ny, Double_t nz)
                     void SetCurrentPoint(Double_t* point)
                     void SetCurrentPoint(Double_t x, Double_t y, Double_t z)
                     void SetCurrentTrack(Int_t i)
                     void SetCurrentTrack(TVirtualGeoTrack* track)
                     void SetDrawExtraPaths(Bool_t flag = kTRUE)
                     void SetExplodedView(Int_t iopt = 0)
                     void SetLastPoint(Double_t x, Double_t y, Double_t z)
                     void SetMatrixReflection(Bool_t flag = kTRUE)
                     void SetMatrixTransform(Bool_t on = kTRUE)
                     void SetMaxVisNodes(Int_t maxnodes = 10000)
                     void SetNsegments(Int_t nseg)
                     void SetOutside(Bool_t flag = kTRUE)
                     void SetPaintVolume(TGeoVolume* vol)
                     void SetParticleName(const char* pname)
                     void SetPdgName(Int_t pdg, const char* name)
                     void SetPhiRange(Double_t phimin = 0., Double_t phimax = 360.)
                     void SetStartSafe(Bool_t flag = kTRUE)
                     void SetStep(Double_t step)
                     void SetTminTmax(Double_t tmin = 0, Double_t tmax = 999)
                     void SetTopVisible(Bool_t vis = kTRUE)
                     void SetTopVolume(TGeoVolume* vol)
                     void SetVisDensity(Double_t dens = 0.01)
                     void SetVisLevel(Int_t level = 3)
                     void SetVisOption(Int_t option = 0)
                     void SetVolumeAttribute(const char* name, const char* att, Int_t val)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual ULong_t SizeOf(const TGeoNode* node, Option_t* option)
                     void SortOverlaps()
                TGeoNode* Step(Bool_t is_geom = kTRUE, Bool_t cross = kTRUE)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)
                     void Test(Int_t npoints = 1000000, Option_t* option)
                     void TestOverlaps(const char* path)
                     void TopToMaster(const Double_t* top, Double_t* master) const
                     void UnbombTranslation(const Double_t* tr, Double_t* bombtr)
                     void UpdateCurrentPosition(Double_t* nextpoint)
                     void ViewLeaves(Bool_t flag = kTRUE)
              TGeoVolume* Volume(const char* name, const char* shape, Int_t nmed, Float_t* upar, Int_t npar = 0)
              TGeoVolume* Volume(const char* name, const char* shape, Int_t nmed, Double_t* upar, Int_t npar = 0)
                 Double_t Weight(Double_t precision = 0.01, Option_t* option = "v")

Data Members

    private:

                 Double_t fStep                ! step to be done from current point and direction
                 Double_t fSafety              ! safety radius from current point
                 Double_t fLastSafety          ! last computed safety radius
                 Double_t fPhimin              ! lowest range for phi cut
                 Double_t fPhimax              ! highest range for phi cut
                 Double_t fTmin                ! lower time limit for tracks drawing
                 Double_t fTmax                ! upper time limit for tracks drawing
                    Int_t fLevel               ! current geometry level;
                    Int_t fNNodes              total number of physical nodes
                  TString fPath                ! path to current node
                  TString fParticleName        ! particles to be drawn
                 Double_t fNormal[3]           ! cosine of incident angle on current checked surface
                Double_t* fCldir               ! unit vector to current closest shape
                Double_t* fCldirChecked        ! unit vector to current checked shape
                Double_t* fPoint               ![3] current point
                Double_t* fDirection           ![3] current direction
                 Double_t fVisDensity          transparency threshold by density
                    Int_t fExplodedView        exploded view mode
                    Int_t fVisOption           global visualization option
                    Int_t fVisLevel            maximum visualization depth
                    Int_t fNsegments           number of segments to approximate circles
                    Int_t fNtracks             number of tracks
                    Int_t fMaxVisNodes         maximum number of visible nodes
        TVirtualGeoTrack* fCurrentTrack        ! current track
                    Int_t fNpdg                number of different pdg's stored
                    Int_t fPdgId[256]          pdg conversion table
                   Bool_t fSearchOverlaps      ! flag set when an overlapping cluster is searched
                   Bool_t fCurrentOverlapping  ! flags the type of the current node
                   Bool_t fLoopVolumes         ! flag volume lists loop
                   Bool_t fStartSafe           ! flag a safe start for point classification
                   Bool_t fIsEntering          ! flag if current step just got into a new node
                   Bool_t fIsExiting           ! flag that current track is about to leave current node
                   Bool_t fIsStepEntering      ! flag that next geometric step will enter new volume
                   Bool_t fIsStepExiting       ! flaag that next geometric step will exit current volume
                   Bool_t fIsOutside           ! flag that current point is outside geometry
                   Bool_t fIsOnBoundary        ! flag that current point is on some boundary
                   Bool_t fIsSameLocation      ! flag that a new point is in the same node as previous
                   Bool_t fIsNullStep          ! flag that last geometric step was null
                   Bool_t fStreamVoxels        flag to allow voxelization I/O
                   Bool_t fIsGeomReading       ! flag set when reading geometry
                   Bool_t fPhiCut              flag for phi cuts
                   Bool_t fTimeCut             time cut for tracks
                   Bool_t fDrawExtra           ! flag that the list of physical nodes has to be drawn
                   Bool_t fMatrixTransform     ! flag for using GL matrix
                   Bool_t fMatrixReflection    ! flag for GL reflections
           TGeoNodeCache* fCache               ! cache for physical nodes
      TVirtualGeoPainter* fPainter             ! current painter
               TObjArray* fMatrices            -> list of local transformations
               TObjArray* fShapes              -> list of shapes
               TObjArray* fVolumes             -> list of volumes
               TObjArray* fPhysicalNodes       -> list of physical nodes
               TObjArray* fGShapes             ! list of runtime shapes
               TObjArray* fGVolumes            ! list of runtime volumes
               TObjArray* fTracks              -> list of tracks attached to geometry
               TObjArray* fPdgNames            -> list of pdg names for tracks
                   TList* fMaterials           -> list of materials
                   TList* fMedia               -> list of tracking media
               TObjArray* fNodes               -> current branch of nodes
               TObjArray* fOverlaps            -> list of geometrical overlaps
                 UChar_t* fBits                ! bits used for voxelization
              TGeoVolume* fCurrentVolume       ! current volume
              TGeoVolume* fTopVolume           ! top level volume in geometry
                TGeoNode* fCurrentNode         ! current node
                TGeoNode* fTopNode             ! top physical node
                TGeoNode* fLastNode            ! last searched node
                TGeoNode* fNextNode            ! next node that will be crossed
              TGeoVolume* fMasterVolume        master volume
             TGeoHMatrix* fCurrentMatrix       ! current global matrix
             TGeoHMatrix* fGLMatrix            matrix to be used for view transformations
               TObjArray* fUniqueVolumes       -> list of unique volumes
               TGeoShape* fClippingShape       ! clipping shape for raytracing
                   Int_t* fNodeIdArray         ! array of node id's
                    Int_t fIntSize             ! int buffer size
                    Int_t fDblSize             ! dbl buffer size
                    Int_t fOverlapSize         ! current size of fOverlapClusters
                    Int_t fOverlapMark         ! current recursive position in fOverlapClusters
                   Int_t* fIntBuffer           ! transient int buffer
                   Int_t* fOverlapClusters     ! internal array for overlaps
                Double_t* fDblBuffer           ! transient dbl buffer
                 Double_t fLastPoint[3]        ! last point for which safety was computed
              TGeoVolume* fPaintVolume         ! volume currently painted

Class Description

 General architecture
 --------------------

   The new ROOT geometry package is a tool designed for building, browsing,
 tracking and visualizing a detector geometry. The code is independent from
 other external MC for simulation, therefore it does not contain any
 constraints related to physics. However, the package defines a number of
 hooks for tracking, such as media, materials, magnetic field or track state flags,
 in order to allow interfacing to tracking MC's. The final goal is to be
 able to use the same geometry for several purposes, such as tracking,
 reconstruction or visualization, taking advantage of the ROOT features
 related to bookkeeping, I/O, histograming, browsing and GUI's.

   The geometrical modeler is the most important component of the package and
 it provides answers to the basic questions like "Where am I ?" or "How far
 from the next boundary ?", but also to more complex ones like "How far from
 the closest surface ?" or "Which is the next crossing along a helix ?".

   The architecture of the modeler is a combination between a GEANT-like
 containment scheme and a normal CSG binary tree at the level of shapes. An
 important common feature of all detector geometry descriptions is the
 mother-daughter concept. This is the most natural approach when tracking
 is concerned and imposes a set of constraints to the way geometry is defined.
 Constructive solid geometry composition is used only in order to create more
 complex shapes from an existing set of primitives through boolean operations.
 This feature is not implemented yet but in future full definition of boolean
 expressions will be supported.

   Practically every geometry defined in GEANT style can be mapped by the modeler.
 The basic components used for building the logical hierarchy of the geometry
 are called "volumes" and "nodes". Volumes (sometimes called "solids") are fully
 defined geometrical objects having a given shape and medium and possibly
 containing a list of nodes. Nodes represent just positioned instances of volumes
 inside a container volume and they are not directly defined by user. They are
 automatically created as a result of adding one volume inside other or dividing
 a volume. The geometrical transformation hold by nodes is always defined with
 respect to their mother (relative positioning). Reflection matrices are allowed.
 All volumes have to be fully aware of their containees when the geometry is
 closed. They will build aditional structures (voxels) in order to fasten-up
 the search algorithms. Finally, nodes can be regarded as bidirectional links
 between containers and containees objects.

   The structure defined in this way is a graph structure since volumes are
 replicable (same volume can become daughter node of several other volumes),
 every volume becoming a branch in this graph. Any volume in the logical graph
 can become the actual top volume at run time (see TGeoManager::SetTopVolume()).
 All functionalities of the modeler will behave in this case as if only the
 corresponding branch starting from this volume is the registered geometry.

   A given volume can be positioned several times in the geometry. A volume
 can be divided according default or user-defined patterns, creating automatically
 the list of division nodes inside. The elementary volumes created during the
 dividing process follow the same scheme as usual volumes, therefore it is possible
 to position further geometrical structures inside or to divide them further more
 (see TGeoVolume::Divide()).

   The primitive shapes supported by the package are basically the GEANT3
 shapes (see class TGeoShape), arbitrary wedges with eight vertices on two parallel
 planes. All basic primitives inherits from class TGeoBBox since the bounding box
 of a solid is essential for the tracking algorithms. They also implement the
 virtual methods defined in the virtual class TGeoShape (point and segment
 classification). User-defined primitives can be direcly plugged into the modeler
 provided that they override these methods. Composite shapes will be soon supported
 by the modeler. In order to build a TGeoCompositeShape, one will have to define
 first the primitive components. The object that handle boolean
 operations among components is called TGeoBoolCombinator and it has to be
 constructed providing a string boolean expression between the components names.


 Example for building a simple geometry :
-----------------------------------------

______________________________________________________________________________
void rootgeom()
{
//--- Definition of a simple geometry
   gSystem->Load("libGeom");
   TGeoManager *geom = new TGeoManager("simple1", "Simple geometry");

   //--- define some materials
   TGeoMaterial *matVacuum = new TGeoMaterial("Vacuum", 0,0,0);
   TGeoMaterial *matAl = new TGeoMaterial("Al", 26.98,13,2.7);
   //--- define some media
   TGeoMedium *med;
   TGeoMedium *Vacuum = new TGeoMedium(1, matVacuum);
   TGeoMedium *Al = new TGeoMedium(2, matAl);

   //--- define the transformations
   TGeoTranslation *tr1 = new TGeoTranslation(20., 0, 0.);
   TGeoTranslation *tr2 = new TGeoTranslation(10., 0., 0.);
   TGeoTranslation *tr3 = new TGeoTranslation(10., 20., 0.);
   TGeoTranslation *tr4 = new TGeoTranslation(5., 10., 0.);
   TGeoTranslation *tr5 = new TGeoTranslation(20., 0., 0.);
   TGeoTranslation *tr6 = new TGeoTranslation(-5., 0., 0.);
   TGeoTranslation *tr7 = new TGeoTranslation(7.5, 7.5, 0.);
   TGeoRotation   *rot1 = new TGeoRotation("rot1", 90., 0., 90., 270., 0., 0.);
   TGeoCombiTrans *combi1 = new TGeoCombiTrans(7.5, -7.5, 0., rot1);
   TGeoTranslation *tr8 = new TGeoTranslation(7.5, -5., 0.);
   TGeoTranslation *tr9 = new TGeoTranslation(7.5, 20., 0.);
   TGeoTranslation *tr10 = new TGeoTranslation(85., 0., 0.);
   TGeoTranslation *tr11 = new TGeoTranslation(35., 0., 0.);
   TGeoTranslation *tr12 = new TGeoTranslation(-15., 0., 0.);
   TGeoTranslation *tr13 = new TGeoTranslation(-65., 0., 0.);

   TGeoTranslation  *tr14 = new TGeoTranslation(0,0,-100);
   TGeoCombiTrans *combi2 = new TGeoCombiTrans(0,0,100,
                                   new TGeoRotation("rot2",90,180,90,90,180,0));
   TGeoCombiTrans *combi3 = new TGeoCombiTrans(100,0,0,
                                   new TGeoRotation("rot3",90,270,0,0,90,180));
   TGeoCombiTrans *combi4 = new TGeoCombiTrans(-100,0,0,
                                   new TGeoRotation("rot4",90,90,0,0,90,0));
   TGeoCombiTrans *combi5 = new TGeoCombiTrans(0,100,0,
                                   new TGeoRotation("rot5",0,0,90,180,90,270));
   TGeoCombiTrans *combi6 = new TGeoCombiTrans(0,-100,0,
                                   new TGeoRotation("rot6",180,0,90,180,90,90));

   //--- make the top container volume
   Double_t worldx = 110.;
   Double_t worldy = 50.;
   Double_t worldz = 5.;
   TGeoVolume *top = geom->MakeBox("TOP", Vacuum, 270., 270., 120.);
   geom->SetTopVolume(top); // mandatory !
   //--- build other container volumes
   TGeoVolume *replica = geom->MakeBox("REPLICA", Vacuum,120,120,120);
   replica->SetVisibility(kFALSE);
   TGeoVolume *rootbox = geom->MakeBox("ROOT", Vacuum, 110., 50., 5.);
   rootbox->SetVisibility(kFALSE); // this will hold word 'ROOT'

   //--- make letter 'R'
   TGeoVolume *R = geom->MakeBox("R", Vacuum, 25., 25., 5.);
   R->SetVisibility(kFALSE);
   TGeoVolume *bar1 = geom->MakeBox("bar1", Al, 5., 25, 5.);
   bar1->SetLineColor(kRed);
   R->AddNode(bar1, 1, tr1);
   TGeoVolume *bar2 = geom->MakeBox("bar2", Al, 5., 5., 5.);
   bar2->SetLineColor(kRed);
   R->AddNode(bar2, 1, tr2);
   R->AddNode(bar2, 2, tr3);
   TGeoVolume *tub1 = geom->MakeTubs("tub1", Al, 5., 15., 5., 90., 270.);
   tub1->SetLineColor(kRed);
   R->AddNode(tub1, 1, tr4);
   TGeoVolume *bar3 = geom->MakeArb8("bar3", Al, 5.);
   bar3->SetLineColor(kRed);
   TGeoArb8 *arb = (TGeoArb8*)bar3->GetShape();
   arb->SetVertex(0, 15., -5.);
   arb->SetVertex(1, 5., -5.);
   arb->SetVertex(2, -10., -25.);
   arb->SetVertex(3, 0., -25.);
   arb->SetVertex(4, 15., -5.);
   arb->SetVertex(5, 5., -5.);
   arb->SetVertex(6, -10., -25.);
   arb->SetVertex(7, 0., -25.);
   R->AddNode(bar3, 1, gGeoIdentity);

   //--- make letter 'O'
   TGeoVolume *O = geom->MakeBox("O", Vacuum, 25., 25., 5.);
   O->SetVisibility(kFALSE);
   TGeoVolume *bar4 = geom->MakeBox("bar4", Al, 5., 7.5, 5.);
   bar4->SetLineColor(kYellow);
   O->AddNode(bar4, 1, tr5);
   O->AddNode(bar4, 2, tr6);
   TGeoVolume *tub2 = geom->MakeTubs("tub1", Al, 7.5, 17.5, 5., 0., 180.);
   tub2->SetLineColor(kYellow);
   O->AddNode(tub2, 1, tr7);
   O->AddNode(tub2, 2, combi1);

   //--- make letter 'T'
   TGeoVolume *T = geom->MakeBox("T", Vacuum, 25., 25., 5.);
   T->SetVisibility(kFALSE);
   TGeoVolume *bar5 = geom->MakeBox("bar5", Al, 5., 20., 5.);
   bar5->SetLineColor(kBlue);
   T->AddNode(bar5, 1, tr8);
   TGeoVolume *bar6 = geom->MakeBox("bar6", Al, 17.5, 5., 5.);
   bar6->SetLineColor(kBlue);
   T->AddNode(bar6, 1, tr9);

   //--- add letters to 'ROOT' container
   rootbox->AddNode(R, 1, tr10);
   rootbox->AddNode(O, 1, tr11);
   rootbox->AddNode(O, 2, tr12);
   rootbox->AddNode(T, 1, tr13);

   //--- add word 'ROOT' on each face of a cube
   replica->AddNode(rootbox, 1, tr14);
   replica->AddNode(rootbox, 2, combi2);
   replica->AddNode(rootbox, 3, combi3);
   replica->AddNode(rootbox, 4, combi4);
   replica->AddNode(rootbox, 5, combi5);
   replica->AddNode(rootbox, 6, combi6);

   //--- add four replicas of this cube to top volume
   top->AddNode(replica, 1, new TGeoTranslation(-150, -150, 0));
   top->AddNode(replica, 2, new TGeoTranslation(150, -150, 0));
   top->AddNode(replica, 3, new TGeoTranslation(150, 150, 0));
   top->AddNode(replica, 4, new TGeoTranslation(-150, 150, 0));

   //--- close the geometry
   geom->CloseGeometry();

   //--- draw the ROOT box
   geom->SetVisLevel(4);
   top->Draw();
   if (gPad) gPad->x3d();
}
______________________________________________________________________________

 TGeoManager - the manager class for the geometry package.
 ---------------------------------------------------------

   TGeoManager class is embedding all the API needed for building and tracking
 a geometry. It defines a global pointer (gGeoManager) in order to be fully
 accessible from external code. The mechanism of handling multiple geometries
 at the same time will be soon implemented.

   TGeoManager is the owner of all geometry objects defined in a session,
 therefore users must not try to control their deletion. It contains lists of
 media, materials, transformations, shapes and volumes. Logical nodes (positioned
 volumes) are created and destroyed by the TGeoVolume class. Physical
 nodes and their global transformations are subjected to a caching mechanism
 due to the sometimes very large memory requirements of logical graph expansion.
 The caching mechanism is triggered by the total number of physical instances
 of volumes and the cache manager is a client of TGeoManager. The manager class
 also controls the painter client. This is linked with ROOT graphical libraries
 loaded on demand in order to control visualization actions.

 Rules for building a valid geometry
 -----------------------------------

   A given geometry can be built in various ways, but there are mandatory steps
 that have to be followed in order to be validated by the modeler. There are
 general rules : volumes needs media and shapes in order to be created,
 both container an containee volumes must be created before linking them together,
 and the relative transformation matrix must be provided. All branches must
 have an upper link point otherwise they will not be considered as part of the
 geometry. Visibility or tracking properties of volumes can be provided both
 at build time or after geometry is closed, but global visualization settings
 (see TGeoPainter class) should not be provided at build time, otherwise the
 drawing package will be loaded. There is also a list of specific rules :
 positioned daughters should not extrude their mother or intersect with sisters
 unless this is specified (see TGeoVolume::AddNodeOverlap()), the top volume
 (containing all geometry tree) must be specified before closing the geometry
 and must not be positioned - it represents the global reference frame. After
 building the full geometry tree, the geometry must be closed
 (see TGeoManager::CloseGeometry()). Voxelization can be redone per volume after
 this process.


   Below is the general scheme of the manager class.

  An interactive session
 ------------------------

   Provided that a geometry was successfully built and closed (for instance the
 previous example $ROOTSYS/tutorials/rootgeom.C ), the manager class will register
 itself to ROOT and the logical/physical structures will become immediately browsable.
 The ROOT browser will display starting from the geometry folder : the list of
 transformations and media, the top volume and the top logical node. These last
 two can be fully expanded, any intermediate volume/node in the browser being subject
 of direct access context menu operations (right mouse button click). All user
 utilities of classes TGeoManager, TGeoVolume and TGeoNode can be called via the
 context menu.

  --- Drawing the geometry

   Any logical volume can be drawn via TGeoVolume::Draw() member function.
 This can be direcly accessed from the context menu of the volume object
 directly from the browser.
   There are several drawing options that can be set with
 TGeoManager::SetVisOption(Int_t opt) method :
 opt=0 - only the content of the volume is drawn, N levels down (default N=3).
    This is the default behavior. The number of levels to be drawn can be changed
    via TGeoManager::SetVisLevel(Int_t level) method.

 opt=1 - the final leaves (e.g. daughters with no containment) of the branch
    starting from volume are drawn down to the current number of levels.
                                     WARNING : This mode is memory consuming
    depending of the size of geometry, so drawing from top level within this mode
    should be handled with care for expensive geometries. In future there will be
    a limitation on the maximum number of nodes to be visualized.

 opt=2 - only the clicked volume is visualized. This is automatically set by
    TGeoVolume::DrawOnly() method
 opt=3 - only a given path is visualized. This is automatically set by
    TGeoVolume::DrawPath(const char *path) method

    The current view can be exploded in cartesian, cylindrical or spherical
 coordinates :
   TGeoManager::SetExplodedView(Int_t opt). Options may be :
 - 0  - default (no bombing)
 - 1  - cartesian coordinates. The bomb factor on each axis can be set with
        TGeoManager::SetBombX(Double_t bomb) and corresponding Y and Z.
 - 2  - bomb in cylindrical coordinates. Only the bomb factors on Z and R
        are considered

 - 3  - bomb in radial spherical coordinate : TGeoManager::SetBombR()

 Volumes themselves support different visualization settings :
    - TGeoVolume::SetVisibility() : set volume visibility.
    - TGeoVolume::VisibleDaughters() : set daughters visibility.
 All these actions automatically updates the current view if any.

  --- Checking the geometry

  Several checking methods are accessible from the volume context menu. They
 generally apply only to the visible parts of the drawn geometry in order to
 ease geometry checking, and their implementation is in the TGeoChecker class
 from the painting package.

 1. Checking a given point.
   Can be called from TGeoManager::CheckPoint(Double_t x, Double_t y, Double_t z).
 This method is drawing the daughters of the volume containing the point one
 level down, printing the path to the deepest physical node holding this point.
 It also computes the closest distance to any boundary. The point will be drawn
 in red.

  2. Shooting random points.
   Can be called from TGeoVolume::RandomPoints() (context menu function) and
 it will draw this volume with current visualization settings. Random points
 are generated in the bounding box of the top drawn volume. The points are
 classified and drawn with the color of their deepest container. Only points
 in visible nodes will be drawn.

  3. Raytracing.
   Can be called from TGeoVolume::RandomRays() (context menu of volumes) and
 will shoot rays from a given point in the local reference frame with random
 directions. The intersections with displayed nodes will appear as segments
 having the color of the touched node. Drawn geometry will be then made invisible
 in order to enhance rays.

 Default constructor.

 Constructor.

 Initialize manager class.

 Destructor

 Add a material to the list. Returns index of the material in list.

 Add a matrix to the list. Returns index of the matrix in list.

 Add a shape to the list. Returns index of the shape in list.

 Add a track to the list of tracks

 Makes a primary track but do not attach it to the list of tracks. The track
 can be attached as daughter to another one with TVirtualGeoTrack::AddTrack

 Add a volume to the list. Returns index of the volume in list.

 Describe how to browse this object.

 Get the new 'bombed' translation vector according current exploded view mode.

 Get the new 'unbombed' translation vector according current exploded view mode.

 Builds the cache for physical nodes and global matrices.

 Builds node id array.

 Register a matrix to the list of matrices. It will be cleaned-up at the
 destruction TGeoManager.

 Create a new volume by dividing an existing one (GEANT3 like)

 Divides MOTHER into NDIV divisions called NAME
 along axis IAXIS starting at coordinate value START
 and having size STEP. The created volumes will have tracking
 media ID=NUMED (if NUMED=0 -> same media as MOTHER)
    The behavior of the division operation can be triggered using OPTION :
 OPTION (case insensitive) :
  N  - divide all range in NDIV cells (same effect as STEP<=0) (GSDVN in G3)
  NX - divide range starting with START in NDIV cells          (GSDVN2 in G3)
  S  - divide all range with given STEP. NDIV is computed and divisions will be centered
         in full range (same effect as NDIV<=0)                (GSDVS, GSDVT in G3)
  SX - same as DVS, but from START position.                   (GSDVS2, GSDVT2 in G3)

 Create rotation matrix named 'mat<index>'.

  index    rotation matrix number
  theta1   polar angle for axis X
  phi1     azimuthal angle for axis X
  theta2   polar angle for axis Y
  phi2     azimuthal angle for axis Y
  theta3   polar angle for axis Z
  phi3     azimuthal angle for axis Z

 Create material with given A, Z and density, having an unique id.

 Create mixture OR COMPOUND IMAT as composed by THE BASIC nelem
 materials defined by arrays A,Z and WMAT, having an unique id.

 Create mixture OR COMPOUND IMAT as composed by THE BASIC nelem
 materials defined by arrays A,Z and WMAT, having an unique id.

 Create tracking medium

  numed      tracking medium number assigned
  name      tracking medium name
  nmat      material number
  isvol     sensitive volume flag
  ifield    magnetic field
  fieldm    max. field value (kilogauss)
  tmaxfd    max. angle due to field (deg/step)
  stemax    max. step allowed
  deemax    max. fraction of energy lost in a step
  epsil     tracking precision (cm)
  stmin     min. step due to continuous processes (cm)

  ifield = 0 if no magnetic field; ifield = -1 if user decision in guswim;
  ifield = 1 if tracking performed with g3rkuta; ifield = 2 if tracking
  performed with g3helix; ifield = 3 if tracking performed with g3helx3.

 Create a node called <name_nr> pointing to the volume called <name>
 as daughter of the volume called <mother> (gspos). The relative matrix is
 made of : a translation (x,y,z) and a rotation matrix named <matIROT>.
 In case npar>0, create the volume to be positioned in mother, according
 its actual parameters (gsposp).
  NAME   Volume name
  NUMBER Copy number of the volume
  MOTHER Mother volume name
  X      X coord. of the volume in mother ref. sys.
  Y      Y coord. of the volume in mother ref. sys.
  Z      Z coord. of the volume in mother ref. sys.
  IROT   Rotation matrix number w.r.t. mother ref. sys.
  ISONLY ONLY/MANY flag

 Create a node called <name_nr> pointing to the volume called <name>
 as daughter of the volume called <mother> (gspos). The relative matrix is
 made of : a translation (x,y,z) and a rotation matrix named <matIROT>.
 In case npar>0, create the volume to be positioned in mother, according
 its actual parameters (gsposp).
  NAME   Volume name
  NUMBER Copy number of the volume
  MOTHER Mother volume name
  X      X coord. of the volume in mother ref. sys.
  Y      Y coord. of the volume in mother ref. sys.
  Z      Z coord. of the volume in mother ref. sys.
  IROT   Rotation matrix number w.r.t. mother ref. sys.
  ISONLY ONLY/MANY flag

 Create a volume in GEANT3 style.
  NAME   Volume name
  SHAPE  Volume type
  NMED   Tracking medium number
  NPAR   Number of shape parameters
  UPAR   Vector containing shape parameters

 Create a volume in GEANT3 style.
  NAME   Volume name
  SHAPE  Volume type
  NMED   Tracking medium number
  NPAR   Number of shape parameters
  UPAR   Vector containing shape parameters

 Reset all attributes to default ones. Default attributes for visualization
 are those defined before closing the geometry.

 Closing geometry implies checking the geometry validity, fixing shapes
 with negative parameters (run-time shapes)building the cache manager,
 voxelizing all volumes, counting the total number of physical nodes and
 registring the manager class to the browser.

 Clear the list of overlaps.

 Remove a shape from the list of shapes.

 Clean temporary volumes and shapes from garbage collection.

 Change current path to point to the node having this id.
 Node id has to be in range : 0 to fNNodes-1 (no check for performance reasons)

 Make top level node the current node. Updates the cache accordingly.
 Determine the overlapping state of current node.

 Go one level up in geometry. Updates cache accordingly.
 Determine the overlapping state of current node.

 Make a daughter of current node current. Can be called only with a valid
 daughter index (no check). Updates cache accordingly.

 Browse the tree of nodes starting from fTopNode according to pathname.
 Changes the path accordingly.

 Count the total number of nodes starting from a volume, nlevels down.

 Set default angles for a given view.

 Draw current point in the same view.

 Draw animation of tracks

 Draw tracks over the geometry, according to option. By default, only
 primaries are drawn. See TGeoTrack::Draw() for additional options.

 Draw current path

 Draw random points in the bounding box of a volume.

 Check time of finding "Where am I" for n points.

 Geometry overlap checker based on sampling.

 Fill volume names of current branch into an array.

 Get name for given pdg code;

 Fill node copy numbers of current branch into an array.

 Fill node copy numbers of current branch into an array.

 Retrieve cartesian and radial bomb factors.

 Returns current depth to which geometry is drawn.

 Returns current depth to which geometry is drawn.

 Find level of virtuality of current overlapping node (number of levels
 up having the same tracking media.

 Get track with a given ID.

 Get parent track with a given ID.

 Get index for track id, -1 if not found.

 Go upwards the tree until a non-overlaping node

 Go upwards the tree until a non-overlaping node

 Find a node inside a cluster of overlapping nodes. Current node must
 be on top of all the nodes in cluster. Always nc>1.

 Make the cluster of overlapping nodes in a voxel, containing point in reference
 of the mother. Returns number of nodes containing the point. Nodes should not be
 offsets.

 Set default volume colors according to A of material

 Compute safe distance from the current point. This represent the distance
 from POINT to the closest boundary.

 Compute safe distance from the current point within an overlapping node

 Set volume attributes in G3 style.

 Set factors that will "bomb" all translations in cartesian and cylindrical coordinates.

 Set a user-defined shape as clipping for ray tracing.

 set the maximum number of visible nodes.

 make top volume visible on screen

 set drawing mode :
 option=0 (default) all nodes drawn down to vislevel
 option=1           leaves and nodes at vislevel drawn
 option=2           path is drawn

 Set visualization option (leaves only OR all volumes)

 Set density threshold. Volumes with densities lower than this become
 transparent.

 set default level down to which visualization is performed

 Sort overlaps by decreasing overlap distance. Extrusions comes first.

 Optimize voxelization type for all volumes. Save best choice in a macro.

 Parse a string boolean expression and do a syntax check. Find top
 level boolean operator and returns its type. Fill the two
 substrings to which this operator applies. The returned integer is :
 -1 : parse error
  0 : no boolean operator
  1 : union - represented as '+' in expression
  2 : difference (subtraction) - represented as '-' in expression
  3 : intersection - represented as '*' in expression.
 Paranthesys should be used to avoid ambiguites. For instance :
    A+B-C will be interpreted as (A+B)-C which is not the same as A+(B-C)
 eliminate not needed paranthesys

 Save current attributes in a macro

 Returns the deepest node containing fPoint, which must be set a priori.

 Find distance to next boundary and store it in fStep. Returns node to which this
 boundary belongs. If PATH is specified, compute only distance to the node to which
 PATH points. If STEPMAX is specified, compute distance only in case fSafety is smaller
 than this value. STEPMAX represent the step to be made imposed by other reasons than
 geometry (usually physics processes). Therefore in this case this method provides the
 answer to the question : "Is STEPMAX a safe step ?" returning a NULL node and filling
 fStep with a big number.

 Returns deepest node containing current point.

 Returns deepest node containing current point.

 Computes fast normal to next crossed boundary, assuming that the current point
 is close enough to the boundary. Works only after calling FindNextBoundary.

 Computes normal vector to the next surface that will be or was already
 crossed when propagating on a straight line from a given point/direction.
 Returns the normal vector cosines in the MASTER coordinate system. The dot
 product of the normal and the current direction is positive defined.
   printf("Current node: %s forward=%i\n", GetPath(), forward);

 Checks if point (x,y,z) is still in the current node.
 check if this is an overlapping node

 True if current node is in phi range

 Initialize current point and current direction vector (normalized)
 in MARS. Return corresponding node.

 Initialize current point and current direction vector (normalized)
 in MARS. Return corresponding node.

 Get path to the current node in the form /node0/node1/...

 Get total size of geometry in bytes.

 Make a default painter if none present. Returns pointer to it.

 Search for a named volume.

 Retreive unique id for a volume name. Return -1 if name not found.

 Find if a given material duplicates an existing one.

 Search for a named material.

 Search for a named tracking medium.

 Search for a tracking medium with a given ID.

 Return material at position id.

 Return index of named material.

 Randomly shoot nrays and plot intersections with surfaces for current
 top node.

 Remove material at given index.

 Sets all pointers TGeoVolume::fField to NULL. User data becomes decoupled
 from geometry. Deletion has to be managed by users.

 Restore the master volume of the geometry.

 Voxelize all non-divided volumes.

 Send "Modified" signal to painter.

 Make an TGeoArb8 volume.

 Make in one step a volume pointing to a box shape with given medium.

 Make in one step a volume pointing to a paralelipiped shape with given medium.

 Make in one step a volume pointing to a sphere shape with given medium

 Make in one step a volume pointing to a torus shape with given medium.

 Make in one step a volume pointing to a tube shape with given medium.

 Make in one step a volume pointing to a tube segment shape with given medium.

 Make in one step a volume pointing to a tube shape with given medium

 Make in one step a volume pointing to a tube shape with given medium

 Make in one step a volume pointing to a tube shape with given medium

 Make in one step a volume pointing to a tube segment shape with given medium

 Make in one step a volume pointing to a cone shape with given medium.

 Make in one step a volume pointing to a cone segment shape with given medium

 Make in one step a volume pointing to a polycone shape with given medium.

 Make in one step a volume pointing to a polygone shape with given medium.

 Make in one step a volume pointing to a TGeoTrd1 shape with given medium.

 Make in one step a volume pointing to a TGeoTrd2 shape with given medium.

 Make in one step a volume pointing to a trapezoid shape with given medium.

 Make in one step a volume pointing to a twisted trapezoid shape with given medium.

 Make a TGeoXtru-shaped volume with nz planes

 Makes a physical node corresponding to a path. If PATH is not specified,
 makes physical node matching current modeller state.

 Clear the current list of physical nodes, so that we can start over with a new list.
 If MUSTDELETE is true, delete previous nodes.

 Make an assembly of volumes.

 Make a TGeoVolumeMulti handling a list of volumes.

 Set type of exploding view (see TGeoPainter::SetExplodedView())

 Set cut phi range

 Set number of segments for approximating circles in drawing.

 Get number of segments approximating circles

 Build the default materials. A list of those can be found in ...
   new TGeoMaterial("Air", 14.61, 7.3, 0.001205);

 Make a rectiliniar step of length fStep from current point (fPoint) on current
 direction (fDirection). If the step is imposed by geometry, is_geom flag
 must be true (default). The cross flag specifies if the boundary should be
 crossed in case of a geometry step (default true). Returns new node after step.
 Set also on boundary condition.

 shoot npoints randomly in a box of 1E-5 arround current point.
 return minimum distance to points outside

 Set the top volume and corresponding node as starting point of the geometry.

 Define different tracking media.

 Classify a given point. See TGeoChecker::CheckPoint().

 Instanciate a TGeoChecker object and investigates the geometry according to
 option. Not implemented yet.
 check shapes first

 Check all geometry for illegal overlaps within a limit OVLP.

 Prints the current list of overlaps.

 Computes and changes the current node according to the new position.
 Not implemented.

 Estimate weight of volume VOL with a precision SIGMA(W)/W better than PRECISION.
 Option can be "v" - verbose (default)

 computes the total size in bytes of the branch starting with node.
 The option can specify if all the branch has to be parsed or only the node

 Stream an object of class TGeoManager.

 Export this geometry on filename with a key=name
 By default the geometry is saved without the voxelisation info.
 Use option 'v" to save the voxelisation info.

static function
Import in memory from filename the geometry with key=name.
if name="" (default), the first TGeoManager object in the file is returned.
Note that this function deletes the current gGeoManager (if one)
before importing the new object.

 Get a temporary buffer of Int_t*

 Get a temporary buffer of Double_t*

 Get time cut for drawing tracks.

 Set time cut interval for drawing tracks. If called with no arguments, time
 cut will be disabled.

 Convert coordinates from master volume frame to top.

 Convert coordinates from top volume frame to master.

Inline Functions

                     Bool_t IsLoopingVolumes() const
                       void SetLoopVolumes(Bool_t flag = kTRUE)
                     Bool_t IsFolder() const
                 TGeoShape* GetClippingShape() const
        TVirtualGeoPainter* GetPainter() const
                      Int_t GetBombMode() const
                      Int_t GetMaxVisNodes() const
                   Double_t GetTmax() const
                TGeoVolume* GetPaintVolume() const
                   Double_t GetVisDensity() const
                     Bool_t IsDrawingExtra() const
                     Bool_t IsVisLeaves() const
                       void SetClipping(Bool_t flag = kTRUE)
                       void SetPaintVolume(TGeoVolume* vol)
                       void SetDrawExtraPaths(Bool_t flag = kTRUE)
                       void SetParticleName(const char* pname)
                const char* GetParticleName() const
                     Bool_t IsClosed() const
                       void SetCurrentTrack(Int_t i)
                       void SetCurrentTrack(TVirtualGeoTrack* track)
                      Int_t GetNtracks() const
          TVirtualGeoTrack* GetCurrentTrack()
          TVirtualGeoTrack* GetLastTrack()
            const Double_t* GetLastPoint() const
          TVirtualGeoTrack* GetTrack(Int_t index)
                   Double_t GetSafeDistance() const
                   Double_t GetStep() const
                     Bool_t IsAnimatingTracks() const
                     Bool_t IsCheckingOverlaps() const
                     Bool_t IsMatrixTransform() const
                     Bool_t IsMatrixReflection() const
                     Bool_t IsSameLocation() const
                     Bool_t IsStartSafe() const
                       void SetStartSafe(Bool_t flag = kTRUE)
                       void SetMatrixTransform(Bool_t on = kTRUE)
                       void SetMatrixReflection(Bool_t flag = kTRUE)
                       void SetStep(Double_t step)
                     Bool_t IsCurrentOverlapping() const
                     Bool_t IsEntering() const
                     Bool_t IsExiting() const
                     Bool_t IsStepEntering() const
                     Bool_t IsStepExiting() const
                     Bool_t IsOutside() const
                     Bool_t IsOnBoundary() const
                     Bool_t IsNullStep() const
                       void SetOutside(Bool_t flag = kTRUE)
                       void ClearTracks()
                   UChar_t* GetBits()
                     Bool_t IsStreamingVoxels() const
                 TObjArray* GetListOfNodes()
                 TObjArray* GetListOfPhysicalNodes()
                 TObjArray* GetListOfOverlaps()
                 TObjArray* GetListOfMatrices() const
                     TList* GetListOfMaterials() const
                     TList* GetListOfMedia() const
                 TObjArray* GetListOfVolumes() const
                 TObjArray* GetListOfGVolumes() const
                 TObjArray* GetListOfShapes() const
                 TObjArray* GetListOfUVolumes() const
                 TObjArray* GetListOfTracks() const
                  TGeoNode* GetNode(Int_t level) const
                      Int_t GetNodeId() const
                  TGeoNode* GetNextNode() const
                  TGeoNode* GetMother(Int_t up = 1) const
               TGeoHMatrix* GetCurrentMatrix() const
               TGeoHMatrix* GetGLMatrix() const
                  TGeoNode* GetCurrentNode() const
                  Double_t* GetCurrentPoint() const
                  Double_t* GetCurrentDirection() const
                TGeoVolume* GetCurrentVolume() const
                  Double_t* GetCldirChecked() const
                  Double_t* GetCldir() const
            const Double_t* GetNormal() const
                      Int_t GetLevel() const
                      Int_t GetStackLevel() const
                TGeoVolume* GetMasterVolume() const
                TGeoVolume* GetTopVolume() const
                  TGeoNode* GetTopNode() const
          TGeoPhysicalNode* GetPhysicalNode(Int_t i) const
                       void SetCurrentPoint(Double_t* point)
                       void SetCurrentPoint(Double_t x, Double_t y, Double_t z)
                       void SetLastPoint(Double_t x, Double_t y, Double_t z)
                       void SetCurrentDirection(Double_t* dir)
                       void SetCurrentDirection(Double_t nx, Double_t ny, Double_t nz)
                       void SetCldirChecked(Double_t* dir)
                       void LocalToMaster(const Double_t* local, Double_t* master) const
                       void LocalToMasterVect(const Double_t* local, Double_t* master) const
                       void LocalToMasterBomb(const Double_t* local, Double_t* master) const
                       void MasterToLocal(const Double_t* master, Double_t* local) const
                       void MasterToLocalVect(const Double_t* master, Double_t* local) const
                       void MasterToLocalBomb(const Double_t* master, Double_t* local) const
                TGeoVolume* GetVolume(Int_t uid) const
                      Int_t GetNNodes()
             TGeoNodeCache* GetCache() const
                       void SetCache(const TGeoNodeCache* cache)
                       void SetAnimateTracks(Bool_t flag = kTRUE)
                      Int_t PushPath(Int_t startlevel = 0)
                     Bool_t PopPath()
                     Bool_t PopPath(Int_t index)
                      Int_t PushPoint(Int_t startlevel = 0)
                     Bool_t PopPoint()
                     Bool_t PopPoint(Int_t index)
                       void PopDummy(Int_t ipop = 9999)
                    TClass* Class()
                    TClass* IsA() const
                       void ShowMembers(TMemberInspector& insp, char* parent)
                       void StreamerNVirtual(TBuffer& b)
                TGeoManager TGeoManager(const TGeoManager&)
               TGeoManager& operator=(const TGeoManager&)