Datablocks

• .molec_obj_integer  

  7 The Id text size [7].

  8 Controls the Id text colour [16711680, i.e.red].

  9 The number of Id's displayed per object [3].

• .active_centre  

  1-3 3 real numbers, used by a variety of commands, including Sphere_centre.  

Each molecular object creates a number of entries in the data base. If the object name is CA, for example, then the following entries are created:

.obj_3dt_ca

Holds the current text of Id'ed atoms.  

.obj_con_ca

  Holds the connectivity between the atoms being displayed. This is stored as a list of integers, pointers to the order of the atoms in the molecule. If atoms i, j, k are connected, then this would be encoded as 2i+1, 2j, 2k in this list.

.obj_idx_ca

  Holds a list of pointers directly to the atoms, i, j, k in the example above.

.obj_col_ca

  Holds a list of colours to be drawn for the atoms, in the order in .obj_idx_ca in this example.

Note that the actual commands issued by the user are not stored in the database.