class TGeoBuilder: public TObject

 Default constructor.

 Copy constructor.

 Destructor.

 Assignment.

 Return pointer to singleton.

 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.

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

 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

 Make an assembly of volumes.

 Make a TGeoVolumeMulti handling a list of volumes.

 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