OOPSE/libmdtools/InitializeFromFile.cpp

#include <iostream>
#include <cmath>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "ReadWrite.hpp"
#include "simError.h"

#ifdef IS_MPI
#include <mpi.h>
#include <mpi++.h>
#include "mpiSimulation.hpp"
#define TAKE_THIS_TAG 0
#endif // is_mpi

InitializeFromFile :: InitializeFromFile( char *in_name ){
#ifdef IS_MPI
  if (worldRank == 0) {
#endif

  c_in_file = fopen(in_name, "r");
  if(c_in_file == NULL){
    sprintf(painCave.errMsg,
            "Cannot open file: %s\n", in_name);
    painCave.isFatal = 1;
    simError();
  }
  
  strcpy( c_in_name, in_name);
#ifdef IS_MPI
  }
 strcpy( checkPointMsg, "Infile opened for reading successfully." );
  MPIcheckPoint();
#endif
  return;  
}

InitializeFromFile :: ~InitializeFromFile( ){
#ifdef IS_MPI
  if (worldRank == 0) {
#endif
  int error;
  error = fclose( c_in_file );
  if( error ){
    sprintf( painCave.errMsg,
             "Error closing %s\n", c_in_name );
    simError();
  }
#ifdef IS_MPI
  }
  strcpy( checkPointMsg, "Infile closed successfully." );
  MPIcheckPoint();
#endif

  return;
}


void InitializeFromFile :: read_xyz( SimInfo* the_entry_plug ){

  int i, j, done, which_node, which_atom; // loop counter

  const int BUFFERSIZE = 2000; // size of the read buffer
  int n_atoms; // the number of atoms
  char read_buffer[BUFFERSIZE]; //the line buffer for reading 
#ifdef IS_MPI
  char send_buffer[BUFFERSIZE];
#endif

  char *eof_test; // ptr to see when we reach the end of the file 
  char *parseErr;
  int procIndex;

  entry_plug = the_entry_plug;


#ifndef IS_MPI
  eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
  if( eof_test == NULL ){
    sprintf( painCave.errMsg,
             "InitializeFromFile error: error reading 1st line of \"%s\"\n",
             c_in_name );
    painCave.isFatal = 1;
    simError();
  }

  n_atoms = atoi( read_buffer );

  Atom **atoms = entry_plug->atoms;
  DirectionalAtom* dAtom;

  if( n_atoms != entry_plug->n_atoms ){
    sprintf( painCave.errMsg,
             "Initialize from File error. %s n_atoms, %d, "
             "does not match the BASS file's n_atoms, %d.\n",
             c_in_name, n_atoms, entry_plug->n_atoms );
    painCave.isFatal = 1;
    simError();
  }
  
  //read and toss the comment line 
  
  eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
  if(eof_test == NULL){
    sprintf( painCave.errMsg,
             "error in reading commment in %s\n", c_in_name);
    painCave.isFatal = 1;
    simError();
  }

  for( i=0; i < n_atoms; i++){
    
    eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
    if(eof_test == NULL){
      sprintf(painCave.errMsg,
              "error in reading file %s\n"
              "natoms  = %d; index = %d\n"
              "error reading the line from the file.\n",
              c_in_name, n_atoms, i );
      painCave.isFatal = 1;
      simError();
    }

    
    parseErr = parseDumpLine( read_buffer, i );
    if( parseErr != NULL ){
      strcpy( painCave.errMsg, parseErr );
      painCave.isFatal = 1;
      simError();
    }    
  }


  // MPI Section of code..........
#else //IS_MPI

  MPI::Status istatus;
  int *AtomToProcMap = mpiSim->getAtomToProcMap();

  if (worldRank == 0) {
    eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
    if( eof_test == NULL ){
      sprintf( painCave.errMsg,
               "Error reading 1st line of %d \n ",c_in_name);
      painCave.isFatal = 1;
      simError();
    }
    
    n_atoms = atoi( read_buffer );
    
    Atom **atoms = entry_plug->atoms;
    DirectionalAtom* dAtom;
 
    // Check to see that the number of atoms in the intial configuration file is the
    // same as declared in simBass.
    
    if( n_atoms != mpiSim->getTotAtoms() ){
      sprintf( painCave.errMsg,
               "Initialize from File error. %s n_atoms, %d, "
               "does not match the BASS file's n_atoms, %d.\n",
               c_in_name, n_atoms, entry_plug->n_atoms );
      painCave.isFatal = 1;
      simError();
    }
    
    //read and toss the comment line 
    
    eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
    if(eof_test == NULL){
      sprintf( painCave.errMsg,
               "error in reading commment in %s\n", c_in_name);
      painCave.isFatal = 1;
      simError();
    }
  

    for (i=0 ; i < mpiSim->getTotAtoms(); i++) {
      
      eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
      if(eof_test == NULL){
        sprintf(painCave.errMsg,
                "error in reading file %s\n"
                "natoms  = %d; index = %d\n"
                "error reading the line from the file.\n",
                c_in_name, n_atoms, i );
        painCave.isFatal = 1;
        simError();
      }
    
      // Get the Node number which wants this atom:
      which_node = AtomToProcMap[i];     
      if (which_node == mpiSim->getMyNode()) {
        parseErr = parseDumpLine( read_buffer, i );
        if( parseErr != NULL ){
          strcpy( painCave.errMsg, parseErr );
          painCave.isFatal = 1;
          simError();
        }    
      } else {
        MPI::COMM_WORLD.Send(read_buffer, BUFFERSIZE, MPI_CHAR, which_node, 
                             TAKE_THIS_TAG);
        MPI::COMM_WORLD.Send(&i, 1, MPI_INT, which_node, TAKE_THIS_TAG);
      }
    }
    sprintf(read_buffer, "GAMEOVER");
    for (j = 0; j < mpiSim->getNumberProcessors(); j++) {      
      MPI::COMM_WORLD.Send(read_buffer, BUFFERSIZE, MPI_CHAR, j, 
                           TAKE_THIS_TAG);
    }

  } else {

    done = 0;
    while (!done) {
      MPI::COMM_WORLD.Recv(read_buffer, BUFFERSIZE, MPI_CHAR, 0, 
                           TAKE_THIS_TAG, istatus);
      if (strcmp(read_buffer, "GAMEOVER")) {
        done = 1;
        continue;
      } else {
        MPI::COMM_WORLD.Recv(&which_atom, 1, MPI_INT, 0, 
                             TAKE_THIS_TAG, istatus);
        parseErr = parseDumpLine( read_buffer, which_atom );
        if( parseErr != NULL ){
          strcpy( painCave.errMsg, parseErr );
          painCave.isFatal = 1;
          simError();
        } 
      }
    }
  }
        
#endif
}

char* InitializeFromFile::parseDumpLine(char* readLine, int atomIndex){

  char *foo; // the pointer to the current string token 
  
  double rx, ry, rz; // position place holders
  double vx, vy, vz; // velocity placeholders
  double q[4]; // the quaternions
  double jx, jy, jz; // angular velocity placeholders;
  double qSqr, qLength; // needed to normalize the quaternion vector.
  
  Atom **atoms = entry_plug->atoms;
  DirectionalAtom* dAtom;
  
  int n_atoms;

#ifdef IS_MPI
  n_atoms = mpiSim->getTotAtoms();
#else
  n_atoms = entry_plug->n_atoms;
#endif // is_mpi


  // set the string tokenizer
  
  foo = strtok(readLine, " ,;\t");
  
  // check the atom name to the current atom
  
  if( strcmp( foo, atoms[atomIndex]->getType() ) ){
    sprintf( painCave.errMsg,
             "Initialize from file error. Atom %s at index %d "
             "in file %s does not"
             " match the BASS atom %s.\n",
             foo, atomIndex, c_in_name, atoms[atomIndex]->getType() );
    return strdup( painCave.errMsg );
  }
    
  // get the positions

  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading postition x from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  rx = atof( foo );
   
  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading postition y from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  ry = atof( foo );
     
  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading postition z from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  rz = atof( foo );    


  // get the velocities

  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading velocity x from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  vx = atof( foo );
    
  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading velocity y from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  vy = atof( foo );
    
  foo = strtok(NULL, " ,;\t");
  if(foo == NULL){
    sprintf( painCave.errMsg,
             "error in reading velocity z from %s\n"
             "natoms  = %d, index = %d\n",
             c_in_name, n_atoms, atomIndex );
    return strdup( painCave.errMsg );
  }
  vz = atof( foo );
    
    
  // get the quaternions
    
  if( atoms[atomIndex]->isDirectional() ){
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf(painCave.errMsg,
              "error in reading quaternion 0 from %s\n"
              "natoms  = %d, index = %d\n",
              c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    q[0] = atof( foo );
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading quaternion 1 from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    q[1] = atof( foo );
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading quaternion 2 from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    q[2] = atof( foo );
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading quaternion 3 from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    q[3] = atof( foo );
      
    // get the angular velocities
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading angular momentum jx from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    jx = atof( foo );
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading angular momentum jy from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    jy = atof(foo );
      
    foo = strtok(NULL, " ,;\t");
    if(foo == NULL){
      sprintf( painCave.errMsg,
               "error in reading angular momentum jz from %s\n"
               "natoms  = %d, index = %d\n",
               c_in_name, n_atoms, atomIndex );
      return strdup( painCave.errMsg );
    }
    jz = atof( foo );
      
    dAtom = ( DirectionalAtom* )atoms[atomIndex];

    // check that the quaternion vector is normalized

    qSqr = (q[0] * q[0]) + (q[1] * q[1]) + (q[2] * q[2]) + (q[3] * q[3]);
      
    qLength = sqrt( qSqr );
    q[0] = q[0] / qLength;
    q[1] = q[1] / qLength;
    q[2] = q[2] / qLength;
    q[3] = q[3] / qLength;
      
    dAtom->setQ( q );
      
    // add the angular velocities

    dAtom->setJx( jx );
    dAtom->setJy( jy );
    dAtom->setJz( jz );
  }
    
  // add the positions and velocities to the atom
    
  atoms[atomIndex]->setX( rx );
  atoms[atomIndex]->setY( ry );
  atoms[atomIndex]->setZ( rz );
    
  atoms[atomIndex]->set_vx( vx );
  atoms[atomIndex]->set_vy( vy );
  atoms[atomIndex]->set_vz( vz );

  return NULL;
}
Revision:	417
Committed:	Thu Mar 27 01:49:45 2003 UTC (21 years, 3 months ago) by gezelter
File size:	11623 byte(s)
Log Message:	Fixes to fileio for MPI
#	User	Rev	Content
1	mmeineke	377	#include <iostream>
2			#include <cmath>
3
4			#include <stdio.h>
5			#include <stdlib.h>
6			#include <string.h>
7			#include <unistd.h>
8			#include <sys/types.h>
9			#include <sys/stat.h>
10
11			#include "ReadWrite.hpp"
12			#include "simError.h"
13
14			#ifdef IS_MPI
15	gezelter	417	#include <mpi.h>
16			#include <mpi++.h>
17	mmeineke	377	#include "mpiSimulation.hpp"
18			#define TAKE_THIS_TAG 0
19			#endif // is_mpi
20
21			InitializeFromFile :: InitializeFromFile( char *in_name ){
22			#ifdef IS_MPI
23			if (worldRank == 0) {
24			#endif
25
26			c_in_file = fopen(in_name, "r");
27			if(c_in_file == NULL){
28			sprintf(painCave.errMsg,
29			"Cannot open file: %s\n", in_name);
30			painCave.isFatal = 1;
31			simError();
32			}
33
34			strcpy( c_in_name, in_name);
35			#ifdef IS_MPI
36			}
37			strcpy( checkPointMsg, "Infile opened for reading successfully." );
38			MPIcheckPoint();
39			#endif
40			return;
41			}
42
43			InitializeFromFile :: ~InitializeFromFile( ){
44			#ifdef IS_MPI
45			if (worldRank == 0) {
46			#endif
47			int error;
48			error = fclose( c_in_file );
49			if( error ){
50			sprintf( painCave.errMsg,
51			"Error closing %s\n", c_in_name );
52			simError();
53			}
54			#ifdef IS_MPI
55			}
56			strcpy( checkPointMsg, "Infile closed successfully." );
57			MPIcheckPoint();
58			#endif
59
60			return;
61			}
62
63
64			void InitializeFromFile :: read_xyz( SimInfo* the_entry_plug ){
65
66	gezelter	417	int i, j, done, which_node, which_atom; // loop counter
67	mmeineke	377
68			const int BUFFERSIZE = 2000; // size of the read buffer
69			int n_atoms; // the number of atoms
70			char read_buffer[BUFFERSIZE]; //the line buffer for reading
71			#ifdef IS_MPI
72			char send_buffer[BUFFERSIZE];
73			#endif
74
75			char *eof_test; // ptr to see when we reach the end of the file
76			char *parseErr;
77			int procIndex;
78
79			entry_plug = the_entry_plug;
80
81
82			#ifndef IS_MPI
83			eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
84			if( eof_test == NULL ){
85			sprintf( painCave.errMsg,
86			"InitializeFromFile error: error reading 1st line of \"%s\"\n",
87			c_in_name );
88			painCave.isFatal = 1;
89			simError();
90			}
91
92			n_atoms = atoi( read_buffer );
93
94			Atom **atoms = entry_plug->atoms;
95			DirectionalAtom* dAtom;
96
97			if( n_atoms != entry_plug->n_atoms ){
98			sprintf( painCave.errMsg,
99			"Initialize from File error. %s n_atoms, %d, "
100			"does not match the BASS file's n_atoms, %d.\n",
101			c_in_name, n_atoms, entry_plug->n_atoms );
102			painCave.isFatal = 1;
103			simError();
104			}
105
106			//read and toss the comment line
107
108			eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
109			if(eof_test == NULL){
110			sprintf( painCave.errMsg,
111			"error in reading commment in %s\n", c_in_name);
112			painCave.isFatal = 1;
113			simError();
114			}
115
116			for( i=0; i < n_atoms; i++){
117
118			eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
119			if(eof_test == NULL){
120			sprintf(painCave.errMsg,
121			"error in reading file %s\n"
122			"natoms = %d; index = %d\n"
123			"error reading the line from the file.\n",
124			c_in_name, n_atoms, i );
125			painCave.isFatal = 1;
126			simError();
127			}
128
129
130			parseErr = parseDumpLine( read_buffer, i );
131			if( parseErr != NULL ){
132			strcpy( painCave.errMsg, parseErr );
133			painCave.isFatal = 1;
134			simError();
135			}
136			}
137
138
139			// MPI Section of code..........
140			#else //IS_MPI
141
142	gezelter	417	MPI::Status istatus;
143			int *AtomToProcMap = mpiSim->getAtomToProcMap();
144	mmeineke	377
145			if (worldRank == 0) {
146			eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
147			if( eof_test == NULL ){
148			sprintf( painCave.errMsg,
149			"Error reading 1st line of %d \n ",c_in_name);
150			painCave.isFatal = 1;
151			simError();
152			}
153
154			n_atoms = atoi( read_buffer );
155
156			Atom **atoms = entry_plug->atoms;
157			DirectionalAtom* dAtom;
158
159			// Check to see that the number of atoms in the intial configuration file is the
160			// same as declared in simBass.
161
162			if( n_atoms != mpiSim->getTotAtoms() ){
163			sprintf( painCave.errMsg,
164			"Initialize from File error. %s n_atoms, %d, "
165			"does not match the BASS file's n_atoms, %d.\n",
166			c_in_name, n_atoms, entry_plug->n_atoms );
167			painCave.isFatal = 1;
168			simError();
169			}
170
171			//read and toss the comment line
172
173			eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
174			if(eof_test == NULL){
175			sprintf( painCave.errMsg,
176			"error in reading commment in %s\n", c_in_name);
177			painCave.isFatal = 1;
178			simError();
179			}
180
181	gezelter	417
182			for (i=0 ; i < mpiSim->getTotAtoms(); i++) {
183
184	mmeineke	377	eof_test = fgets(read_buffer, sizeof(read_buffer), c_in_file);
185			if(eof_test == NULL){
186			sprintf(painCave.errMsg,
187			"error in reading file %s\n"
188			"natoms = %d; index = %d\n"
189			"error reading the line from the file.\n",
190			c_in_name, n_atoms, i );
191			painCave.isFatal = 1;
192			simError();
193			}
194
195	gezelter	417	// Get the Node number which wants this atom:
196			which_node = AtomToProcMap[i];
197			if (which_node == mpiSim->getMyNode()) {
198			parseErr = parseDumpLine( read_buffer, i );
199			if( parseErr != NULL ){
200			strcpy( painCave.errMsg, parseErr );
201			painCave.isFatal = 1;
202			simError();
203			}
204			} else {
205			MPI::COMM_WORLD.Send(read_buffer, BUFFERSIZE, MPI_CHAR, which_node,
206			TAKE_THIS_TAG);
207			MPI::COMM_WORLD.Send(&i, 1, MPI_INT, which_node, TAKE_THIS_TAG);
208	mmeineke	377	}
209			}
210	gezelter	417	sprintf(read_buffer, "GAMEOVER");
211			for (j = 0; j < mpiSim->getNumberProcessors(); j++) {
212			MPI::COMM_WORLD.Send(read_buffer, BUFFERSIZE, MPI_CHAR, j,
213			TAKE_THIS_TAG);
214			}
215	mmeineke	377
216	gezelter	417	} else {
217	mmeineke	377
218	gezelter	417	done = 0;
219			while (!done) {
220			MPI::COMM_WORLD.Recv(read_buffer, BUFFERSIZE, MPI_CHAR, 0,
221			TAKE_THIS_TAG, istatus);
222			if (strcmp(read_buffer, "GAMEOVER")) {
223			done = 1;
224			continue;
225			} else {
226			MPI::COMM_WORLD.Recv(&which_atom, 1, MPI_INT, 0,
227			TAKE_THIS_TAG, istatus);
228			parseErr = parseDumpLine( read_buffer, which_atom );
229			if( parseErr != NULL ){
230			strcpy( painCave.errMsg, parseErr );
231			painCave.isFatal = 1;
232			simError();
233			}
234	mmeineke	377	}
235			}
236			}
237	gezelter	417
238	mmeineke	377	#endif
239			}
240
241			char* InitializeFromFile::parseDumpLine(char* readLine, int atomIndex){
242
243			char *foo; // the pointer to the current string token
244
245			double rx, ry, rz; // position place holders
246			double vx, vy, vz; // velocity placeholders
247			double q[4]; // the quaternions
248			double jx, jy, jz; // angular velocity placeholders;
249			double qSqr, qLength; // needed to normalize the quaternion vector.
250
251			Atom **atoms = entry_plug->atoms;
252			DirectionalAtom* dAtom;
253
254			int n_atoms;
255
256			#ifdef IS_MPI
257			n_atoms = mpiSim->getTotAtoms();
258			#else
259			n_atoms = entry_plug->n_atoms;
260			#endif // is_mpi
261
262
263			// set the string tokenizer
264
265			foo = strtok(readLine, " ,;\t");
266
267			// check the atom name to the current atom
268
269			if( strcmp( foo, atoms[atomIndex]->getType() ) ){
270			sprintf( painCave.errMsg,
271			"Initialize from file error. Atom %s at index %d "
272			"in file %s does not"
273			" match the BASS atom %s.\n",
274			foo, atomIndex, c_in_name, atoms[atomIndex]->getType() );
275			return strdup( painCave.errMsg );
276			}
277
278			// get the positions
279
280			foo = strtok(NULL, " ,;\t");
281			if(foo == NULL){
282			sprintf( painCave.errMsg,
283			"error in reading postition x from %s\n"
284			"natoms = %d, index = %d\n",
285			c_in_name, n_atoms, atomIndex );
286			return strdup( painCave.errMsg );
287			}
288			rx = atof( foo );
289
290			foo = strtok(NULL, " ,;\t");
291			if(foo == NULL){
292			sprintf( painCave.errMsg,
293			"error in reading postition y from %s\n"
294			"natoms = %d, index = %d\n",
295			c_in_name, n_atoms, atomIndex );
296			return strdup( painCave.errMsg );
297			}
298			ry = atof( foo );
299
300			foo = strtok(NULL, " ,;\t");
301			if(foo == NULL){
302			sprintf( painCave.errMsg,
303			"error in reading postition z from %s\n"
304			"natoms = %d, index = %d\n",
305			c_in_name, n_atoms, atomIndex );
306			return strdup( painCave.errMsg );
307			}
308			rz = atof( foo );
309
310
311			// get the velocities
312
313			foo = strtok(NULL, " ,;\t");
314			if(foo == NULL){
315			sprintf( painCave.errMsg,
316			"error in reading velocity x from %s\n"
317			"natoms = %d, index = %d\n",
318			c_in_name, n_atoms, atomIndex );
319			return strdup( painCave.errMsg );
320			}
321			vx = atof( foo );
322
323			foo = strtok(NULL, " ,;\t");
324			if(foo == NULL){
325			sprintf( painCave.errMsg,
326			"error in reading velocity y from %s\n"
327			"natoms = %d, index = %d\n",
328			c_in_name, n_atoms, atomIndex );
329			return strdup( painCave.errMsg );
330			}
331			vy = atof( foo );
332
333			foo = strtok(NULL, " ,;\t");
334			if(foo == NULL){
335			sprintf( painCave.errMsg,
336			"error in reading velocity z from %s\n"
337			"natoms = %d, index = %d\n",
338			c_in_name, n_atoms, atomIndex );
339			return strdup( painCave.errMsg );
340			}
341			vz = atof( foo );
342
343
344			// get the quaternions
345
346			if( atoms[atomIndex]->isDirectional() ){
347
348			foo = strtok(NULL, " ,;\t");
349			if(foo == NULL){
350			sprintf(painCave.errMsg,
351			"error in reading quaternion 0 from %s\n"
352			"natoms = %d, index = %d\n",
353			c_in_name, n_atoms, atomIndex );
354			return strdup( painCave.errMsg );
355			}
356			q[0] = atof( foo );
357
358			foo = strtok(NULL, " ,;\t");
359			if(foo == NULL){
360			sprintf( painCave.errMsg,
361			"error in reading quaternion 1 from %s\n"
362			"natoms = %d, index = %d\n",
363			c_in_name, n_atoms, atomIndex );
364			return strdup( painCave.errMsg );
365			}
366			q[1] = atof( foo );
367
368			foo = strtok(NULL, " ,;\t");
369			if(foo == NULL){
370			sprintf( painCave.errMsg,
371			"error in reading quaternion 2 from %s\n"
372			"natoms = %d, index = %d\n",
373			c_in_name, n_atoms, atomIndex );
374			return strdup( painCave.errMsg );
375			}
376			q[2] = atof( foo );
377
378			foo = strtok(NULL, " ,;\t");
379			if(foo == NULL){
380			sprintf( painCave.errMsg,
381			"error in reading quaternion 3 from %s\n"
382			"natoms = %d, index = %d\n",
383			c_in_name, n_atoms, atomIndex );
384			return strdup( painCave.errMsg );
385			}
386			q[3] = atof( foo );
387
388			// get the angular velocities
389
390			foo = strtok(NULL, " ,;\t");
391			if(foo == NULL){
392			sprintf( painCave.errMsg,
393			"error in reading angular momentum jx from %s\n"
394			"natoms = %d, index = %d\n",
395			c_in_name, n_atoms, atomIndex );
396			return strdup( painCave.errMsg );
397			}
398			jx = atof( foo );
399
400			foo = strtok(NULL, " ,;\t");
401			if(foo == NULL){
402			sprintf( painCave.errMsg,
403			"error in reading angular momentum jy from %s\n"
404			"natoms = %d, index = %d\n",
405			c_in_name, n_atoms, atomIndex );
406			return strdup( painCave.errMsg );
407			}
408			jy = atof(foo );
409
410			foo = strtok(NULL, " ,;\t");
411			if(foo == NULL){
412			sprintf( painCave.errMsg,
413			"error in reading angular momentum jz from %s\n"
414			"natoms = %d, index = %d\n",
415			c_in_name, n_atoms, atomIndex );
416			return strdup( painCave.errMsg );
417			}
418			jz = atof( foo );
419
420			dAtom = ( DirectionalAtom* )atoms[atomIndex];
421
422			// check that the quaternion vector is normalized
423
424			qSqr = (q[0] * q[0]) + (q[1] * q[1]) + (q[2] * q[2]) + (q[3] * q[3]);
425
426			qLength = sqrt( qSqr );
427			q[0] = q[0] / qLength;
428			q[1] = q[1] / qLength;
429			q[2] = q[2] / qLength;
430			q[3] = q[3] / qLength;
431
432			dAtom->setQ( q );
433
434			// add the angular velocities
435
436			dAtom->setJx( jx );
437			dAtom->setJy( jy );
438			dAtom->setJz( jz );
439			}
440
441			// add the positions and velocities to the atom
442
443			atoms[atomIndex]->setX( rx );
444			atoms[atomIndex]->setY( ry );
445			atoms[atomIndex]->setZ( rz );
446
447			atoms[atomIndex]->set_vx( vx );
448			atoms[atomIndex]->set_vy( vy );
449			atoms[atomIndex]->set_vz( vz );
450
451			return NULL;
452			}