TGeoNodeMatrix

class TGeoNodeMatrix : public TGeoNode

    public:

           TGeoNodeMatrix TGeoNodeMatrix()
           TGeoNodeMatrix TGeoNodeMatrix(TGeoVolume* vol, TGeoMatrix* matrix)
           TGeoNodeMatrix TGeoNodeMatrix(const TGeoNodeMatrix&)
             virtual void ~TGeoNodeMatrix()
           static TClass* Class()
            virtual Int_t GetByteCount() const
      virtual TGeoMatrix* GetMatrix() const
          virtual TClass* IsA() const
           virtual Bool_t IsFolder() const
        virtual TGeoNode* MakeCopyNode() const
                     void SetMatrix(TGeoMatrix* matrix)
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)

Data Members

    private:

      TGeoMatrix* fMatrix  transf. matrix of fNode in fMother system

Class Description

 TGeoNode
----------
   Nodes are positioned volumes. They have a pointer to the corresponding
 volume. Nodes always belong to a mother container volume, so they also
 have a pointer to this. The base class for nodes is TGeoNode, describing only
 the logical tree. The position of the node with respect to its mother is
 defined by classes deriving from TGeoNode and is stored as a transformation
 matrix by TGeoNodeMatrix or just an offset by division nodes (TGeoNodeXXX).
   Nodes are invisible to user at build time : to create a node one has only
 to call TGeoVolume::AddNode() or TGeoVolume::Divide() methods. In the first
 case, the volume pointed by the node and the geometrical transformation with
 respect to the mother must be created a priori :

   TGeoVolume *vol = new TGeoSphere("SPH", 200, 400);
   TGeoVolume *mother = gGeoManager->MakeBox("HALL", "mat1", 1000, 1000, 3000);
   TGeoTranslation *t1 = new TGeoTranslation(0, 0, 300);
   mother->AddNode(vol, t1);

   The last line will create a branch : HALL->SPH . A node named SPH:0 will
 be created. If trying to place the same volume many times inside the same
 mother, the automatic naming scheme for the corresponding nodes is just
 appending <:copy_number> to the name of the volume. Therefore :

   TGeoTranslation *t2 = new TGeoTranslation(0,0,-300);
   mother->AddNode(vol, t2);

 will create a TGeoNodeMatrix named SPH:1 inside HALL.

   When creating division nodes (TGeoVolume::Divide()), one has to specify the
 number of divisions, optionally the range for dividing and an string option
 specifying the division type. A list of TGeoNodeOffset will be generated :

   mother->Divide(5, "X");

 will create five TGeoNodeOffset nodes, pointing to the same basic cell volume
 which is automatically generated :

   HALL:0 --|
   HALL:1 --|
   HALL:2 --|---> HALL_C = gGeoManager->MakeBox("HALL_C", "mat1", 200, 1000, 3000)
   HALL:3 --|
   HALL:4 --|

   One can subsequently add usual nodes inside HALL_C cell or divide it, and the
 action will affect all nodes HALL:i .
   If the basic cell volumes coming from a division operation are not identical,
 a volume will be generated per division node, and the naming sheme for them
 will be HALL_d1, HALL_d2, ... .

 Browsing nodes. (to be added)

 Node flags.(to be added)


/*

*/

 Default constructor

 Constructor. Null pointer to matrix means identity transformation

 Destructor

 return the total size in bytes of this node

 make a copy of this node

Inline Functions

                Bool_t IsFolder() const
           TGeoMatrix* GetMatrix() const
                  void SetMatrix(TGeoMatrix* matrix)
               TClass* Class()
               TClass* IsA() const
                  void ShowMembers(TMemberInspector& insp, char* parent)
                  void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)
        TGeoNodeMatrix TGeoNodeMatrix(const TGeoNodeMatrix&)