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#ifndef lint
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static const char RCSid[] = "$Id: sceneio.c,v 2.5 2011/09/22 02:15:56 greg 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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#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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static OBJECT object0; /* zeroeth object */
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static short otypmap[NUMOTYPE+32]; /* object type map */
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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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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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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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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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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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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 (fflush(fp) == EOF)
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error(SYSTEM, "output error in writescene");
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}
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