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#include <stdlib.h>
#include <funtools.h>
typedef struct evstruct{
int x, y;
int pha;
float pi;
int region;
} *Ev, EvRec;
int main(int argc, char **argv)
{
int i, nev;
int pmod=16, put=1;
double pinc=0.1234;
char xbuf[32], ybuf[32];
Ev ev;
Fun ofun;
/* sanity check */
if( argc < 3 ) return 1;
/* open new file for writing */
if( !(ofun=FunOpen(argv[1], "w", NULL)) ){
fprintf(stderr, "ERROR: can't open funtools file: %s\n", argv[1]);
return 1;
}
if( (nev = atoi(argv[2])) <=0 ) return 1;
ev = (Ev)calloc(1, sizeof(EvRec));
/* The pair of numeric values specify the data value range, used to bin
x, y into an image. They are permitted but not needed for pi and pha */
sprintf(xbuf, "J:1:%d", nev);
sprintf(ybuf, "J:1:%d", nev);
/* select columns to write */
FunColumnSelect(ofun, sizeof(EvRec), NULL,
"x", xbuf, "w", FUN_OFFSET(Ev, x),
"y", ybuf, "w", FUN_OFFSET(Ev, y),
"pha", "J:1:16", "w", FUN_OFFSET(Ev, pha),
"pi", "E", "w", FUN_OFFSET(Ev, pi),
NULL);
/* write params to header; generally added before first event is written */
FunParamPuti(ofun, "PMOD", 0, pmod, "modulus for pha generation", 1);
FunParamPutd(ofun, "PINC", 0, pinc, 7, "increment for pi generation", 1);
/* make up events */
for(i=1; i<=nev; i++){
ev->x = i; ev->y = nev-i+1; ev->pha = i % pmod; ev->pi = ev->pha + pinc;
/* write rows to output file -- this can be done in batches, of course */
if( FunTableRowPut(ofun, ev, put, 0, NULL) != put ){
fprintf(stderr, "ERROR: writing to funtools file: %s\n", argv[1]);
return 1;
}
}
if( ev) free(ev);
/* close file */
FunClose(ofun);
return 0;
}
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