Read the node properties

See also

Visual Basic for Applications - Examples

• Connect to CDB

• Single span girder

Problem Description

In this example we will read the nodes data from the database.

Following values are extracted:

• NR (node number)

• INR (internal node number)

• KFIX (degree of freedoms, bitwise encoded)

• NCOD (additional bit code)

• X (global X coordinate)

• Y (global Y coordinate)

• Z (global Z coordinate)

The nodes description can be found in CDBASE.CHM as shown in figure below:

The [INT] means that the data-type is integer. The data-type can easily be checked in the data-type list given in the example.

Problem Solution

The example can be found by following:

C:\<sofistik_installation>\2020\SOFiSTiK 2020\interfaces\examples\c++\read_nodes

Here is a code example how to read the nodes from the CDB:

#include <iostream>
#include <Windows.h>
#include <string>
#include <iomanip>

// Include SOFiSTiK Libraries from :
//  --> "... interfaces/examples/c++"
#include "cdbase.h"
#include "cdbtypeall.h"
#include "cdbtypecon.h"
#include "cdbtypegeo.h"
#include "cdbtypelfc.h"
#include "cdbtypemat.h"
#include "cdbtypesct.h"
#include "cdbtypesys.h"
#include "cdbtypeten.h"

using namespace std;

int main()
{
   // Connect to CDB
   /*
   Index = 0     initialise CDBASE and open scratch data base only
   Index > 0     open an existing data base with exactly tis index
                        (STATUS=UNKNOWN) = somehow obsolete call, use 99!
   Index = 99    test if NAME is a valid database and open the base
                        if possible. Return with the assigned index.
                        If the file does not exist, it will be created.
   Index = 97    open the database via pvm
                        Return with the assigned index.
   Index = 96    open a scratch database, filename is the path to
                        use or NULL.
   Index = 95    open in read-only mode
   Index = 94    create a new data base (STATUS=NEW)
   */
   int index = 99;
   char* fileName = "S:\\test\\read_nodes.cdb";
   int ie = sof_cdb_init(fileName, index);
   if (ie < 0)
   {
      cout << "ERROR: Index= " << ie << " < 0 - see clib1.h for meaning of error codes" << endl;
      cout << "Press any <key> to close the program";
      system("pause");
      return(0);
   }
   else if(ie == 0)
   {
      cout << "ERROR: Index= " << ie << " - The File is not a database" << endl;
      cout << "Press any <key> to close the program";
      system("pause");
      return(0);
   }

   // Get Status
   // int sof_cdb_status  (int ie);
   cout << "The CDB Status: " << sof_cdb_status(ie) << endl;

   int datalen = sizeof(tagCDB_NODE);
   int *datalenptr;
   datalenptr = &datalen;
   tagCDB_NODE cnode;

   cout << setw(11) << "nr"
         << setw(11) << "inr"
         << setw(11) << "kfix"
         << setw(11) << "ncod"
         << setw(20) << "x"
         << setw(20) << "y"
         << setw(20) << "z" <<  endl;

   // &cnode pass the address of the struct to pointer
   while (sof_cdb_get(ie, 20, 0, &cnode, &datalen, 1) < 2)
   {
      cout << setw(11) << cnode.m_nr
            << setw(11) << cnode.m_inr
            << setw(11) << cnode.m_kfix
            << setw(11) << cnode.m_ncod
            << setw(20) << cnode.m_xyz[0]
            << setw(20) << cnode.m_xyz[1]
            << setw(20) << cnode.m_xyz[2]
            <<  endl;
   }

   // Close the CDB
   // int sof_cdb_close  (int ie);
   sof_cdb_close(0);
   cout << "The CDB Status after closing: " << sof_cdb_status(ie) << endl;

   system("pause");
   return 0;
}