#include "stdafx.h"

#include "DllFunc.h"

#include <stdio.h>

FILE* NodeVELwrite;

RecurDynV8R3_UserSubRoutineWizard9_API void __cdecl modal_force_ext

(int id, double time, double upar[], int npar, int ifbody, int nodarr[], int nonde, int jflag, int iflag, double result[])

{

   using namespace rd_syscall;

   // Parameter Information

   //   id     : Modal force sequential identification. (Input)

   //   time   : Simulation time of RD/Solver. (Input)

   //   upar   : Parameters defined by user. (Input)

   //   npar   : Number of user parameters. (Input)

   //   ifbody : RFLEX Body sequential ID. (Input)

   //   nodarr : Node ID array of input node set. (Input)

   //   nonde  : Number of node of node set. (Input)

   //   jflag  : When RD/Solver evaluates a Jacobian, the flag is true. (Input)

   //   iflag  : When RD/Solver initializes arrays, the flag is true. (Input)

   //   result : Returned nodal force vector. Acting point of the nodal force is each center of each node.

   //            Reference frame of each force vector must be the ground inertia marker. (Output, Size: nonde * 6)

   // User Statement

   int errflg =0 , ifinish = 0;

   int nodeseq = 0;

   double vel[6],tvel[3],rvel[3];

   if (iflag)

   {

      for(int k = 0 ; k <nonde ; k++)

      {

         NodeVELwrite=fopen("RFlexNodeVEL_C.txt","w");

         fprintf(NodeVELwrite,"RFlex Node%d Velocity \n",nodarr[k]);

         for (int i = 0; i<6 ;i++) { vel[i]=0.0; }

         for (int i = 0; i<3 ;i++) { tvel[i]=0.0; rvel[i]=0.0; }

         get_rflex_nodeseqid(ifbody,nodarr[k],&nodeseq,&errflg);

         get_rflex_nodevel(ifbody,nodeseq,NULL,0,vel,&errflg);

         get_rflex_nodetvel(ifbody,nodeseq,NULL,0,tvel,&errflg);

         get_rflex_nodervel(ifbody,nodeseq,NULL,0,rvel,&errflg);

         fprintf(NodeVELwrite,"USING GET_RFLEX_NODEVEL \n");

         fprintf(NodeVELwrite,"INITIAL TRANSLATIONAL VELOCITY \n");

         fprintf(NodeVELwrite,"VX = %20.10e\n",vel[0]);

         fprintf(NodeVELwrite,"VY = %20.10e\n",vel[1]);

         fprintf(NodeVELwrite,"VZ = %20.10e\n\n",vel[2]);

         fprintf(NodeVELwrite,"INITIAL ROTATIONAL VELOCITY \n");

         fprintf(NodeVELwrite,"WX = %20.10e\n",vel[3]);

         fprintf(NodeVELwrite,"WY = %20.10e\n",vel[4]);

         fprintf(NodeVELwrite,"WZ = %20.10e\n\n",vel[5]);

         fprintf(NodeVELwrite,"USING GET_RFLEX_NODETVEL \n");

         fprintf(NodeVELwrite,"INITIAL TRANSLATIONAL VELOCITY \n");

         fprintf(NodeVELwrite,"VX = %20.10e\n",tvel[0]);

         fprintf(NodeVELwrite,"VY = %20.10e\n",tvel[1]);

         fprintf(NodeVELwrite,"VZ = %20.10e\n\n",tvel[2]);

         fprintf(NodeVELwrite,"USING GET_RFLEX_NODERVEL \n");

         fprintf(NodeVELwrite,"INITIAL ROTATIONAL VELOCITY \n");

         fprintf(NodeVELwrite,"WX = %20.10e\n",rvel[0]);

         fprintf(NodeVELwrite,"WY = %20.10e\n",rvel[1]);

         fprintf(NodeVELwrite,"WZ = %20.10e\n\n",rvel[2]);

      }

   }

   for(int i=0;i<6*nonde;i++)

   {

      result[i] = 0.0;

   }

}