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#ifndef lint |
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static const char RCSid[] = "$Id: sceneio.c,v 2.4 2003/06/26 00:58:09 schorsch Exp $"; |
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#endif |
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/* |
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* Portable, binary Radiance i/o routines. |
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* |
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* Called from octree and mesh i/o routines. |
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*/ |
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|
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#include "copyright.h" |
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#include "standard.h" |
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#include "octree.h" |
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#include "object.h" |
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#include "otypes.h" |
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|
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static OBJECT object0; /* zeroeth object */ |
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static short otypmap[NUMOTYPE+32]; /* object type map */ |
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|
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|
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static int |
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getobj( /* get next object */ |
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FILE *fp, |
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int objsiz |
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) |
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{ |
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char sbuf[MAXSTR]; |
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int obj; |
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int i; |
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long m; |
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OBJREC *objp; |
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|
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i = getint(1, fp); |
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if (i == -1) |
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return(OVOID); /* terminator */ |
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if ((obj = newobject()) == OVOID) |
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error(SYSTEM, "out of object space"); |
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objp = objptr(obj); |
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if ((objp->otype = otypmap[i]) < 0) |
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error(USER, "reference to unknown type"); |
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if ((m = getint(objsiz, fp)) != OVOID) { |
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m += object0; |
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if ((OBJECT)m != m) |
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error(INTERNAL, "too many objects in getobj"); |
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} |
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objp->omod = m; |
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objp->oname = savqstr(getstr(sbuf, fp)); |
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if ((objp->oargs.nsargs = getint(2, fp)) > 0) { |
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objp->oargs.sarg = (char **)malloc |
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(objp->oargs.nsargs*sizeof(char *)); |
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if (objp->oargs.sarg == NULL) |
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goto memerr; |
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for (i = 0; i < objp->oargs.nsargs; i++) |
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objp->oargs.sarg[i] = savestr(getstr(sbuf, fp)); |
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} else |
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objp->oargs.sarg = NULL; |
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#ifdef IARGS |
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if ((objp->oargs.niargs = getint(2, fp)) > 0) { |
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objp->oargs.iarg = (long *)malloc |
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(objp->oargs.niargs*sizeof(long)); |
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if (objp->oargs.iarg == NULL) |
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goto memerr; |
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for (i = 0; i < objp->oargs.niargs; i++) |
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objp->oargs.iarg[i] = getint(4, fp); |
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} else |
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objp->oargs.iarg = NULL; |
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#endif |
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if ((objp->oargs.nfargs = getint(2, fp)) > 0) { |
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objp->oargs.farg = (RREAL *)malloc |
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(objp->oargs.nfargs*sizeof(RREAL)); |
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if (objp->oargs.farg == NULL) |
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goto memerr; |
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for (i = 0; i < objp->oargs.nfargs; i++) |
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objp->oargs.farg[i] = getflt(fp); |
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} else |
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objp->oargs.farg = NULL; |
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if (feof(fp)) |
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error(SYSTEM, "unexpected EOF in getobj"); |
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/* initialize */ |
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objp->os = NULL; |
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/* insert */ |
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insertobject(obj); |
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return(obj); |
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memerr: |
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error(SYSTEM, "out of memory in getobj"); |
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return 0; /* pro forma return */ |
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} |
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|
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|
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void |
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readscene( /* read binary scene description */ |
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FILE *fp, |
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int objsiz |
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) |
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{ |
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char sbuf[32]; |
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int i; |
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/* record starting object */ |
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object0 = nobjects; |
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/* read type map */ |
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for (i = 0; getstr(sbuf, fp) != NULL && sbuf[0]; i++) |
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if ((otypmap[i] = otype(sbuf)) < 0) { |
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sprintf(errmsg, "unknown object type \"%s\"", |
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sbuf); |
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error(WARNING, errmsg); |
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} |
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/* read objects */ |
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while (getobj(fp, objsiz) != OVOID) |
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; |
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} |
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|
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|
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static void |
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putobj( /* write out object */ |
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OBJREC *o, |
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FILE *fp |
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) |
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{ |
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int i; |
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|
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if (o == NULL) { /* terminator */ |
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putint(-1L, 1, fp); |
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return; |
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} |
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putint((long)o->otype, 1, fp); |
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putint((long)o->omod, sizeof(OBJECT), fp); |
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putstr(o->oname, fp); |
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putint((long)o->oargs.nsargs, 2, fp); |
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for (i = 0; i < o->oargs.nsargs; i++) |
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putstr(o->oargs.sarg[i], fp); |
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#ifdef IARGS |
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putint((long)o->oargs.niargs, 2, fp); |
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for (i = 0; i < o->oargs.niargs; i++) |
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putint((long)o->oargs.iarg[i], 4, fp); |
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#endif |
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putint((long)o->oargs.nfargs, 2, fp); |
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for (i = 0; i < o->oargs.nfargs; i++) |
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putflt(o->oargs.farg[i], fp); |
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} |
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|
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|
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void |
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writescene( /* write binary scene description */ |
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int firstobj, |
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int nobjs, |
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FILE *fp |
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) |
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{ |
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int i; |
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/* write out type list */ |
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for (i = 0; i < NUMOTYPE; i++) |
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putstr(ofun[i].funame, fp); |
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putstr("", fp); |
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/* write objects */ |
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for (i = firstobj; i < firstobj+nobjs; i++) |
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putobj(objptr(i), fp); |
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putobj(NULL, fp); /* terminator */ |
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if (ferror(fp)) |
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error(SYSTEM, "write error in writescene"); |
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} |
