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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1993 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "data.h" |
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/* picture memory usage before warning */ |
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#ifndef PSIZWARN |
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#ifdef BIGMEM |
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#define PSIZWARN 3000000 |
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#else |
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#define PSIZWARN 1000000 |
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#endif |
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#endif |
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|
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#ifndef TABSIZ |
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#define TABSIZ 97 /* table size (prime) */ |
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#endif |
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|
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#define hash(s) (shash(s)%TABSIZ) |
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|
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|
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extern char *fgetword(); |
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extern double atof(); |
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extern char *libpath; /* library search path */ |
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extern char *getlibpath(); /* library search path */ |
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static DATARRAY *dlist = NULL; /* data array list */ |
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static DATARRAY *dtab[TABSIZ]; /* data array list */ |
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static DATARRAY *plist = NULL; /* picture list */ |
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static DATARRAY *ptab[TABSIZ]; /* picture list */ |
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DATARRAY * |
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register int i, j; |
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register DATARRAY *dp; |
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/* look for array in list */ |
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for (dp = dlist; dp != NULL; dp = dp->next) |
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for (dp = dtab[hash(dname)]; dp != NULL; dp = dp->next) |
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if (!strcmp(dname, dp->name)) |
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return(dp); /* found! */ |
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/* |
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* If we haven't loaded the data already, we will look |
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* for it in the directorys specified by the library path. |
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* for it in the directories specified by the library path. |
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* |
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* The file has the following format: |
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* |
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* 0 0 ni p0i p1i .. pni |
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*/ |
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if ((dfname = getpath(dname, libpath, R_OK)) == NULL) { |
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if ((dfname = getpath(dname, getlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find data file \"%s\"", dname); |
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error(USER, errmsg); |
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} |
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dp->arr[i] = atof(word); |
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} |
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fclose(fp); |
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dp->next = dlist; |
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return(dlist = dp); |
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i = hash(dname); |
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dp->next = dtab[i]; |
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return(dtab[i] = dp); |
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|
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memerr: |
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error(SYSTEM, "out of memory in getdata"); |
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} |
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static double inpaspect; /* aspect ratio of input picture */ |
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static |
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headaspect(s) /* check string for aspect ratio */ |
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headaspect(s, iap) /* check string for aspect ratio */ |
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char *s; |
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double *iap; |
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{ |
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if (isaspect(s)) |
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inpaspect *= aspectval(s); |
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*iap *= aspectval(s); |
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} |
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getpict(pname) /* get picture pname */ |
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char *pname; |
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{ |
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extern char *libpath; |
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double inpaspect; |
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char *pfname; |
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FILE *fp; |
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COLOR *scanin; |
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int sl, ns; |
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RESOLU inpres; |
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RESOLU inpres; |
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FLOAT loc[2]; |
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int y; |
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register int x, i; |
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register DATARRAY *pp; |
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/* look for array in list */ |
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for (pp = plist; pp != NULL; pp = pp->next) |
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for (pp = ptab[hash(pname)]; pp != NULL; pp = pp->next) |
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if (!strcmp(pname, pp->name)) |
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return(pp); /* found! */ |
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if ((pfname = getpath(pname, libpath, R_OK)) == NULL) { |
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if ((pfname = getpath(pname, getlibpath(), R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find picture file \"%s\"", pname); |
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error(USER, errmsg); |
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} |
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sprintf(errmsg, "cannot open picture file \"%s\"", pfname); |
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error(SYSTEM, errmsg); |
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} |
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#ifdef MSDOS |
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setmode(fileno(fp), O_BINARY); |
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#endif |
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/* get dimensions */ |
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inpaspect = 1.0; |
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getheader(fp, headaspect); |
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getheader(fp, headaspect, &inpaspect); |
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if (!fgetsresolu(&inpres, fp)) |
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goto readerr; |
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#if PSIZWARN |
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/* check memory usage */ |
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i = 3*sizeof(DATATYPE)*inpres.xr*inpres.yr; |
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if (i > PSIZWARN) { |
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sprintf(errmsg, "picture file \"%s\" using %d bytes of memory", |
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pname, i); |
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error(WARNING, errmsg); |
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} |
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#endif |
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for (i = 0; i < 3; i++) { |
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pp[i].nd = 2; |
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pp[i].dim[0].ne = inpres.yr; |
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} |
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free((char *)scanin); |
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fclose(fp); |
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i = hash(pname); |
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pp[0].next = |
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pp[1].next = |
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pp[2].next = plist; |
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return(plist = pp); |
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pp[2].next = ptab[i]; |
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return(ptab[i] = pp); |
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memerr: |
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error(SYSTEM, "out of memory in getpict"); |
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freedata(dname) /* free memory associated with dname */ |
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char *dname; |
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{ |
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DATARRAY head; |
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int hval, nents; |
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register DATARRAY *dp, *dpl; |
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register int i; |
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for (dpl = NULL, dp = dlist; dp != NULL; dpl = dp, dp = dp->next) |
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if (!strcmp(dname, dp->name)) { |
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if (dpl == NULL) |
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dlist = dp->next; |
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else |
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if (dname == NULL) { /* free all if NULL */ |
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hval = 0; nents = TABSIZ; |
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} else { |
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hval = hash(dname); nents = 1; |
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} |
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while (nents--) { |
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head.next = dtab[hval]; |
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dpl = &head; |
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while ((dp = dpl->next) != NULL) |
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if (dname == NULL || !strcmp(dname, dp->name)) { |
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dpl->next = dp->next; |
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free((char *)dp->arr); |
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for (i = 0; i < dp->nd; i++) |
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if (dp->dim[i].p != NULL) |
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free((char *)dp->dim[i].p); |
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freestr(dp->name); |
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free((char *)dp); |
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return; |
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} |
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free((char *)dp->arr); |
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for (i = 0; i < dp->nd; i++) |
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if (dp->dim[i].p != NULL) |
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free((char *)dp->dim[i].p); |
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freestr(dp->name); |
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free((char *)dp); |
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} else |
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dpl = dp; |
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dtab[hval++] = head.next; |
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} |
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} |
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freepict(pname) /* free memory associated with pname */ |
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char *pname; |
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{ |
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DATARRAY head; |
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int hval, nents; |
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register DATARRAY *pp, *ppl; |
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for (ppl = NULL, pp = plist; pp != NULL; ppl = pp, pp = pp->next) |
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if (!strcmp(pname, pp->name)) { |
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if (ppl == NULL) |
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plist = pp->next; |
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else |
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if (pname == NULL) { /* free all if NULL */ |
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hval = 0; nents = TABSIZ; |
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} else { |
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hval = hash(pname); nents = 1; |
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} |
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while (nents--) { |
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head.next = ptab[hval]; |
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ppl = &head; |
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while ((pp = ppl->next) != NULL) |
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if (pname == NULL || !strcmp(pname, pp->name)) { |
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ppl->next = pp->next; |
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free((char *)pp[0].arr); |
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free((char *)pp[1].arr); |
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free((char *)pp[2].arr); |
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freestr(pp[0].name); |
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free((char *)pp); |
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return; |
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} |
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free((char *)pp[0].arr); |
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free((char *)pp[1].arr); |
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free((char *)pp[2].arr); |
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freestr(pp[0].name); |
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free((char *)pp); |
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} else |
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ppl = pp; |
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ptab[hval++] = head.next; |
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} |
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} |
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double |
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datavalue(dp, pt) /* interpolate data value at a point */ |
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register DATARRAY *dp; |
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double *pt; |
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double *pt; |
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{ |
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DATARRAY sd; |
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int asize; |
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int lower, upper; |
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register int i; |
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double x, y, y0, y1; |
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double x, y, y0, y1; |
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/* set up dimensions for recursion */ |
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sd.nd = dp->nd - 1; |
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asize = 1; |