src/common/rglinst.c

#ifndef lint
static const char       RCSid[] = "$Id: rglinst.c,v 3.17 2016/03/22 03:56:17 greg Exp $";
#endif
/*
 * Routines for reading instances and converting to OpenGL.
 */

#include "copyright.h"

#include <stdio.h>
#include <string.h>
#include <time.h>

#include "platform.h"
#include "resolu.h"
#include "radogl.h"
#include "octree.h"

#define MAXLEVEL        16              /* maximum instance hierarchy level */

typedef struct {
        int     listid;                         /* our list id */
        short   localmatl;                      /* uses local material only */
        FVECT   cent;                           /* center of octree cube */
        char    octfile[256];                   /* octree file path */
} OCTINST;                              /* octree to instantiate */

static double  ogetflt(void);
static long  ogetint(int);
static char  *ogetstr(char *);
static int  loadobj(void);
static void  skiptree(void);
static void  octerror(int etyp, char *msg);
static OCTINST  *getoct(char *);

static char  *infn;                     /* input file name */
static FILE  *infp;                     /* input file stream */
static int  objsize;                    /* size of stored OBJECT's */
static short  otypmap[NUMOTYPE+8];      /* object type map */

static unsigned long    imhash(const char *mod) {return((unsigned long)mod);}
static LUTAB    imtab = {imhash,NULL,NULL,NULL,0,NULL,0};

static LUTAB    ottab = LU_SINIT(free,free);


int
o_instance(o)                           /* convert instance to list call */
register OBJREC *o;
{
        XF      xfs;
        register OCTINST        *ot;
                                        /* set up */
        if (o->oargs.nsargs < 1)
                objerror(o, USER, "missing octree");
        setmaterial(NULL, NULL, 0);
                                        /* put out transform (if any) */
        if (o->oargs.nsargs > 1) {
                if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) !=
                                o->oargs.nsargs-1)
                        objerror(o, USER, "bad transform");
                glPushAttrib(GL_TRANSFORM_BIT);
                if ((xfs.sca < 1.-FTINY) | (xfs.sca > 1.+FTINY))
                        glEnable(GL_NORMALIZE);
                glMatrixMode(GL_MODELVIEW);
                glPushMatrix();
                                        /* matrix order works out to same */
#ifdef SMLFLT
                glMultMatrixf((GLfloat *)xfs.xfm);
#else
                glMultMatrixd((GLdouble *)xfs.xfm);
#endif
        }
        ot = getoct(o->oargs.sarg[0]);  /* get octree reference */
        if (ot->localmatl &= o->os != NULL)     /* set material */
                setmaterial((MATREC *)o->os, ot->cent, 0);
                                        /* call the assigned list */
        glCallList(ot->listid);

        if (o->oargs.nsargs > 1) {      /* end transform */
                glMatrixMode(GL_MODELVIEW);
                glPopMatrix();
                glPopAttrib();
        }
        rgl_checkerr("creating instance");
        return(0);
}


static int
buildoctlist(lp, p)                     /* build octree list */
const LUENT     *lp;
void    *p;
{
        int     old_dolights = dolights, old_domats = domats;
        register OCTINST        *op = (OCTINST *)lp->data;

        domats = !op->localmatl;        /* do materials only if needed */
        dolights = 0;                   /* never do light sources */
        glNewList(op->listid, GL_COMPILE);
        loadoct(op->octfile);           /* load objects into display list */
        surfclean();                    /* clean up */
        glEndList();
        dolights = old_dolights;        /* restore */
        domats = old_domats;
        return(1);                      /* return success */
}


int
loadoctrees()                           /* load octrees we've saved up */
{
        int     levelsleft = MAXLEVEL;
        int     nocts = 0;
        LUTAB   looptab;
                                /* loop through new octree references */
        while (ottab.tsiz) {
                if (!levelsleft--)
                        error(USER, "too many octree levels -- instance loop?");
                looptab = ottab;
                ottab.tsiz = 0;
                nocts += lu_doall(&looptab, buildoctlist, NULL);
                lu_done(&looptab);
        }
        return(nocts);
}


static OCTINST *
getoct(name)                            /* get/assign octree list id */
char    *name;
{
        char    *path;
        register LUENT  *lp;
        register OCTINST        *op;

        if ((lp = lu_find(&ottab, name)) == NULL)
                goto memerr;
        if (lp->key == NULL) {
                lp->key = (char *)malloc(strlen(name)+1);
                if (lp->key == NULL)
                        goto memerr;
                strcpy(lp->key, name);
        }
        if ((op = (OCTINST *)lp->data) == NULL) {
                path = getpath(name, getrlibpath(), R_OK);
                if (path == NULL) {
                        sprintf(errmsg, "cannot find octree \"%s\"", name);
                        error(SYSTEM, errmsg);
                }
                op = (OCTINST *)(lp->data = (char *)malloc(sizeof(OCTINST)));
                strcpy(op->octfile, path);
                checkoct(op->octfile, op->cent);
                op->listid = newglist();
                op->localmatl = ~0;
        }
        return(op);
memerr:
        error(SYSTEM, "out of memory in getoct");
        return NULL; /* pro forma return */
}


double
checkoct(fname, cent)                   /* check octree file for validity */
char    *fname;
FVECT   cent;
{
        char  sbuf[64];
        FILE    *fp = infp;
        char    *fn = infn;
        double  siz = 0.;
        register int  i;
        
        if ((infp = fopen(infn=fname, "r")) == NULL) {
                sprintf(errmsg, "cannot open octree file \"%s\"", fname);
                error(SYSTEM, errmsg);
        }
        SET_FILE_BINARY(infp);
                                        /* get header */
        if (checkheader(infp, OCTFMT, NULL) < 0)
                octerror(USER, "not an octree");
                                        /* check format */
        if ((objsize = ogetint(2)-OCTMAGIC) <= 0 ||
                        objsize > MAXOBJSIZ || objsize > sizeof(long))
                octerror(USER, "incompatible octree format");
        if (cent != NULL) {             /* get boundaries (compute center) */
                for (i = 0; i < 3; i++)
                        cent[i] = atof(ogetstr(sbuf));
                siz = atof(ogetstr(sbuf))*.5;
                cent[0] += siz; cent[1] += siz; cent[2] += siz;
        } else {                        /* get size (radius) only */
                for (i = 0; i < 3; i++)
                        ogetstr(sbuf);
                siz = atof(ogetstr(sbuf))*.5;
        }
        fclose(infp);
        infp = fp;
        infn = fn;
        return(siz);
}


int
loadoct(fname)                          /* read in objects from octree */
char  *fname;
{
        OBJECT  fnobjects;
        char  sbuf[256];
        int  nf;
        register int  i;
        long  m;
        
        infn = fname;
        infp = fopen(fname, "r");       /* assume already checked */
        SET_FILE_BINARY(infp);
                                        /* skip header */
        getheader(infp, NULL, NULL);
                                        /* get format */
        objsize = ogetint(2)-OCTMAGIC;
                                        /* skip boundaries */
        for (i = 0; i < 4; i++)
                ogetstr(sbuf);
        nf = 0;                         /* load object files */
        while (*ogetstr(sbuf)) {
                rgl_load(sbuf);
                nf++;
        }
                                        /* get number of objects */
        fnobjects = m = ogetint(objsize);
        if (fnobjects != m)
                octerror(USER, "too many objects");

        if (nf == 0) {
                skiptree();
                for (i = 0; *ogetstr(sbuf); i++)
                        if ((otypmap[i] = otype(sbuf)) < 0) {
                                sprintf(errmsg, "unknown type \"%s\"", sbuf);
                                octerror(WARNING, errmsg);
                        }
                lu_init(&imtab, 1000); nobjects = 0;
                while (loadobj() != OVOID)
                        ;
                lu_done(&imtab);
                if (nobjects != fnobjects)
                        octerror(USER, "inconsistent object count");
        }
        fclose(infp);
        return(nf);
}


static char *
ogetstr(s)                      /* get null-terminated string */
char  *s;
{
        extern char  *getstr();

        if (getstr(s, infp) == NULL)
                octerror(USER, "truncated octree");
        return(s);
}


static long
ogetint(siz)                    /* get a siz-byte integer */
int  siz;
{
        extern long  getint();
        register long  r;

        r = getint(siz, infp);
        if (feof(infp))
                octerror(USER, "truncated octree");
        return(r);
}


static double
ogetflt()                       /* get a floating point number */
{
        extern double  getflt();
        double  r;

        r = getflt(infp);
        if (feof(infp))
                octerror(USER, "truncated octree");
        return(r);
}
        

static void
skiptree()                              /* skip octree on input */
{
        register int  i;
        
        switch (getc(infp)) {
        case OT_EMPTY:
                return;
        case OT_FULL:
                for (i = ogetint(objsize)*objsize; i-- > 0; )
                        if (getc(infp) == EOF)
                                octerror(USER, "truncated octree");
                return;
        case OT_TREE:
                for (i = 0; i < 8; i++)
                        skiptree();
                return;
        case EOF:
                octerror(USER, "truncated octree");
        default:
                octerror(USER, "damaged octree");
        }
}


static int
loadobj()                               /* get next object */
{
        static OBJREC    ob;
        char  idbuf[MAXSTR], sbuf[MAXSTR];
        register LUENT  *lep;
        register int  i;
        register long  m;
                                        /* get type */
        i = ogetint(1);
        if (i == -1)
                return(OVOID);          /* terminator */
        if ((ob.otype = otypmap[i]) < 0)
                octerror(USER, "reference to unknown type");
                                        /* get modifier */
        if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m)
                octerror(USER, "too many objects");
        if ((ob.omod = m) != OVOID && domats) {
                if ((lep = lu_find(&imtab, (char *)m)) == NULL)
                        goto memerr;
                ob.os = lep->data;
        } else
                ob.os = NULL;
                                        /* get name id */
        ob.oname = ogetstr(idbuf);
                                        /* get string arguments */
        if ((ob.oargs.nsargs = ogetint(2))) {
                ob.oargs.sarg = (char **)malloc
                                (ob.oargs.nsargs*sizeof(char *));
                if (ob.oargs.sarg == NULL)
                        goto memerr;
                for (i = 0; i < ob.oargs.nsargs; i++)
                        ob.oargs.sarg[i] = savestr(ogetstr(sbuf));
        } else
                ob.oargs.sarg = NULL;
                                        /* get integer arguments */
#ifdef  IARGS
        if (ob.oargs.niargs = ogetint(2)) {
                ob.oargs.iarg = (long *)malloc
                                (ob.oargs.niargs*sizeof(long));
                if (ob.oargs.iarg == NULL)
                        goto memerr;
                for (i = 0; i < ob.oargs.niargs; i++)
                        ob.oargs.iarg[i] = ogetint(4);
        } else
                ob.oargs.iarg = NULL;
#endif
                                        /* get real arguments */
        if ((ob.oargs.nfargs = ogetint(2))) {
                ob.oargs.farg = (RREAL *)malloc
                                (ob.oargs.nfargs*sizeof(RREAL));
                if (ob.oargs.farg == NULL)
                        goto memerr;
                for (i = 0; i < ob.oargs.nfargs; i++)
                        ob.oargs.farg[i] = ogetflt();
        } else
                ob.oargs.farg = NULL;
                                        /* process object */
        (*ofun[ob.otype].funp)(&ob);
                                        /* record material if modifier */
        if (ismodifier(ob.otype)) {
                if ((lep = lu_find(&imtab, (char *)(size_t)nobjects)) == NULL)
                        goto memerr;
                lep->key = (char *)(size_t)nobjects;
                lep->data = (char *)getmatp(ob.oname);
        }
        freefargs(&ob.oargs);           /* free arguments */
        return(nobjects++);             /* return object id */
memerr:
        error(SYSTEM, "out of memory in loadobj");
        return OVOID; /* pro forma return */
}


static void
octerror(etyp, msg)                     /* octree error */
int  etyp;
char  *msg;
{
        char  msgbuf[128];

        sprintf(msgbuf, "(%s): %s", infn, msg);
        error(etyp, msgbuf);
}
Revision:	3.18
Committed:	Sat Jun 7 05:09:45 2025 UTC (4 months, 4 weeks ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad6R0, HEAD
Changes since 3.17:	+1 -2 lines
Log Message:	refactor: Put some declarations into "paths.h" and included in "platform.h"
#	User	Rev	Content
1	gwlarson	3.1	#ifndef lint
2	greg	3.18	static const char RCSid[] = "$Id: rglinst.c,v 3.17 2016/03/22 03:56:17 greg Exp $";
3	gwlarson	3.1	#endif
4			/*
5			* Routines for reading instances and converting to OpenGL.
6			*/
7
8	greg	3.6	#include "copyright.h"
9	greg	3.5
10	schorsch	3.11	#include <stdio.h>
11			#include <string.h>
12			#include <time.h>
13
14			#include "platform.h"
15			#include "resolu.h"
16	gwlarson	3.1	#include "radogl.h"
17			#include "octree.h"
18
19	gwlarson	3.2	#define MAXLEVEL 16 /* maximum instance hierarchy level */
20
21	gwlarson	3.1	typedef struct {
22			int listid; /* our list id */
23			short localmatl; /* uses local material only */
24			FVECT cent; /* center of octree cube */
25			char octfile[256]; /* octree file path */
26			} OCTINST; /* octree to instantiate */
27
28	schorsch	3.11	static double ogetflt(void);
29			static long ogetint(int);
30			static char ogetstr(char );
31			static int loadobj(void);
32			static void skiptree(void);
33			static void octerror(int etyp, char *msg);
34			static OCTINST getoct(char );
35	gwlarson	3.1
36			static char infn; / input file name */
37			static FILE infp; / input file stream */
38			static int objsize; /* size of stored OBJECT's */
39			static short otypmap[NUMOTYPE+8]; /* object type map */
40
41	greg	3.16	static unsigned long imhash(const char *mod) {return((unsigned long)mod);}
42	gwlarson	3.1	static LUTAB imtab = {imhash,NULL,NULL,NULL,0,NULL,0};
43
44			static LUTAB ottab = LU_SINIT(free,free);
45
46
47	greg	3.5	int
48	gwlarson	3.1	o_instance(o) /* convert instance to list call */
49			register OBJREC *o;
50			{
51			XF xfs;
52			register OCTINST *ot;
53			/* set up */
54			if (o->oargs.nsargs < 1)
55			objerror(o, USER, "missing octree");
56			setmaterial(NULL, NULL, 0);
57			/* put out transform (if any) */
58			if (o->oargs.nsargs > 1) {
59			if (xf(&xfs, o->oargs.nsargs-1, o->oargs.sarg+1) !=
60			o->oargs.nsargs-1)
61			objerror(o, USER, "bad transform");
62			glPushAttrib(GL_TRANSFORM_BIT);
63	schorsch	3.13	if ((xfs.sca < 1.-FTINY) \| (xfs.sca > 1.+FTINY))
64	gwlarson	3.1	glEnable(GL_NORMALIZE);
65			glMatrixMode(GL_MODELVIEW);
66			glPushMatrix();
67			/* matrix order works out to same */
68			#ifdef SMLFLT
69			glMultMatrixf((GLfloat *)xfs.xfm);
70			#else
71			glMultMatrixd((GLdouble *)xfs.xfm);
72			#endif
73			}
74			ot = getoct(o->oargs.sarg[0]); /* get octree reference */
75			if (ot->localmatl &= o->os != NULL) /* set material */
76	greg	3.5	setmaterial((MATREC *)o->os, ot->cent, 0);
77	gwlarson	3.1	/* call the assigned list */
78			glCallList(ot->listid);
79
80			if (o->oargs.nsargs > 1) { /* end transform */
81	gwlarson	3.3	glMatrixMode(GL_MODELVIEW);
82	gwlarson	3.1	glPopMatrix();
83			glPopAttrib();
84			}
85			rgl_checkerr("creating instance");
86	greg	3.7	return(0);
87	gwlarson	3.1	}
88
89
90			static int
91	greg	3.14	buildoctlist(lp, p) /* build octree list */
92	greg	3.15	const LUENT *lp;
93	greg	3.14	void *p;
94	gwlarson	3.1	{
95			int old_dolights = dolights, old_domats = domats;
96			register OCTINST op = (OCTINST )lp->data;
97
98			domats = !op->localmatl; /* do materials only if needed */
99			dolights = 0; /* never do light sources */
100			glNewList(op->listid, GL_COMPILE);
101			loadoct(op->octfile); /* load objects into display list */
102			surfclean(); /* clean up */
103			glEndList();
104			dolights = old_dolights; /* restore */
105			domats = old_domats;
106			return(1); /* return success */
107			}
108
109
110			int
111			loadoctrees() /* load octrees we've saved up */
112			{
113	gwlarson	3.2	int levelsleft = MAXLEVEL;
114	gwlarson	3.1	int nocts = 0;
115			LUTAB looptab;
116			/* loop through new octree references */
117			while (ottab.tsiz) {
118	gwlarson	3.2	if (!levelsleft--)
119			error(USER, "too many octree levels -- instance loop?");
120	schorsch	3.12	looptab = ottab;
121	gwlarson	3.1	ottab.tsiz = 0;
122	greg	3.14	nocts += lu_doall(&looptab, buildoctlist, NULL);
123	gwlarson	3.1	lu_done(&looptab);
124			}
125			return(nocts);
126			}
127
128
129			static OCTINST *
130			getoct(name) /* get/assign octree list id */
131			char *name;
132			{
133			char *path;
134			register LUENT *lp;
135			register OCTINST *op;
136
137			if ((lp = lu_find(&ottab, name)) == NULL)
138			goto memerr;
139			if (lp->key == NULL) {
140			lp->key = (char *)malloc(strlen(name)+1);
141			if (lp->key == NULL)
142			goto memerr;
143			strcpy(lp->key, name);
144			}
145			if ((op = (OCTINST *)lp->data) == NULL) {
146	greg	3.8	path = getpath(name, getrlibpath(), R_OK);
147	gwlarson	3.1	if (path == NULL) {
148			sprintf(errmsg, "cannot find octree \"%s\"", name);
149	greg	3.17	error(SYSTEM, errmsg);
150	gwlarson	3.1	}
151			op = (OCTINST )(lp->data = (char )malloc(sizeof(OCTINST)));
152			strcpy(op->octfile, path);
153			checkoct(op->octfile, op->cent);
154			op->listid = newglist();
155			op->localmatl = ~0;
156			}
157			return(op);
158			memerr:
159			error(SYSTEM, "out of memory in getoct");
160	schorsch	3.13	return NULL; /* pro forma return */
161	gwlarson	3.1	}
162
163
164			double
165			checkoct(fname, cent) /* check octree file for validity */
166			char *fname;
167			FVECT cent;
168			{
169			char sbuf[64];
170			FILE *fp = infp;
171			char *fn = infn;
172			double siz = 0.;
173			register int i;
174
175			if ((infp = fopen(infn=fname, "r")) == NULL) {
176			sprintf(errmsg, "cannot open octree file \"%s\"", fname);
177			error(SYSTEM, errmsg);
178			}
179	schorsch	3.9	SET_FILE_BINARY(infp);
180	gwlarson	3.1	/* get header */
181			if (checkheader(infp, OCTFMT, NULL) < 0)
182			octerror(USER, "not an octree");
183			/* check format */
184			if ((objsize = ogetint(2)-OCTMAGIC) <= 0 \|\|
185			objsize > MAXOBJSIZ \|\| objsize > sizeof(long))
186	schorsch	3.11	octerror(USER, "incompatible octree format");
187	gwlarson	3.1	if (cent != NULL) { /* get boundaries (compute center) */
188			for (i = 0; i < 3; i++)
189			cent[i] = atof(ogetstr(sbuf));
190			siz = atof(ogetstr(sbuf))*.5;
191			cent[0] += siz; cent[1] += siz; cent[2] += siz;
192			} else { /* get size (radius) only */
193			for (i = 0; i < 3; i++)
194			ogetstr(sbuf);
195			siz = atof(ogetstr(sbuf))*.5;
196			}
197			fclose(infp);
198			infp = fp;
199			infn = fn;
200			return(siz);
201			}
202
203
204	greg	3.5	int
205	gwlarson	3.1	loadoct(fname) /* read in objects from octree */
206			char *fname;
207			{
208			OBJECT fnobjects;
209			char sbuf[256];
210			int nf;
211			register int i;
212			long m;
213
214			infn = fname;
215			infp = fopen(fname, "r"); /* assume already checked */
216	schorsch	3.9	SET_FILE_BINARY(infp);
217	gwlarson	3.1	/* skip header */
218			getheader(infp, NULL, NULL);
219			/* get format */
220			objsize = ogetint(2)-OCTMAGIC;
221			/* skip boundaries */
222			for (i = 0; i < 4; i++)
223			ogetstr(sbuf);
224			nf = 0; /* load object files */
225			while (*ogetstr(sbuf)) {
226			rgl_load(sbuf);
227			nf++;
228			}
229			/* get number of objects */
230			fnobjects = m = ogetint(objsize);
231			if (fnobjects != m)
232			octerror(USER, "too many objects");
233
234			if (nf == 0) {
235			skiptree();
236			for (i = 0; *ogetstr(sbuf); i++)
237			if ((otypmap[i] = otype(sbuf)) < 0) {
238			sprintf(errmsg, "unknown type \"%s\"", sbuf);
239			octerror(WARNING, errmsg);
240			}
241			lu_init(&imtab, 1000); nobjects = 0;
242			while (loadobj() != OVOID)
243			;
244			lu_done(&imtab);
245			if (nobjects != fnobjects)
246			octerror(USER, "inconsistent object count");
247			}
248			fclose(infp);
249			return(nf);
250			}
251
252
253			static char *
254			ogetstr(s) /* get null-terminated string */
255			char *s;
256			{
257			extern char *getstr();
258
259			if (getstr(s, infp) == NULL)
260			octerror(USER, "truncated octree");
261			return(s);
262			}
263
264
265			static long
266			ogetint(siz) /* get a siz-byte integer */
267			int siz;
268			{
269			extern long getint();
270			register long r;
271
272			r = getint(siz, infp);
273			if (feof(infp))
274			octerror(USER, "truncated octree");
275			return(r);
276			}
277
278
279			static double
280			ogetflt() /* get a floating point number */
281			{
282			extern double getflt();
283			double r;
284
285			r = getflt(infp);
286			if (feof(infp))
287			octerror(USER, "truncated octree");
288			return(r);
289			}
290
291
292	greg	3.5	static void
293	gwlarson	3.1	skiptree() /* skip octree on input */
294			{
295			register int i;
296
297			switch (getc(infp)) {
298			case OT_EMPTY:
299			return;
300			case OT_FULL:
301			for (i = ogetint(objsize)*objsize; i-- > 0; )
302			if (getc(infp) == EOF)
303			octerror(USER, "truncated octree");
304			return;
305			case OT_TREE:
306			for (i = 0; i < 8; i++)
307			skiptree();
308			return;
309			case EOF:
310			octerror(USER, "truncated octree");
311			default:
312			octerror(USER, "damaged octree");
313			}
314			}
315
316
317	greg	3.5	static int
318	gwlarson	3.1	loadobj() /* get next object */
319			{
320			static OBJREC ob;
321			char idbuf[MAXSTR], sbuf[MAXSTR];
322			register LUENT *lep;
323			register int i;
324			register long m;
325			/* get type */
326			i = ogetint(1);
327			if (i == -1)
328			return(OVOID); /* terminator */
329			if ((ob.otype = otypmap[i]) < 0)
330			octerror(USER, "reference to unknown type");
331			/* get modifier */
332			if ((m = ogetint(objsize)) != OVOID && (OBJECT)m != m)
333			octerror(USER, "too many objects");
334			if ((ob.omod = m) != OVOID && domats) {
335			if ((lep = lu_find(&imtab, (char *)m)) == NULL)
336			goto memerr;
337			ob.os = lep->data;
338			} else
339			ob.os = NULL;
340			/* get name id */
341			ob.oname = ogetstr(idbuf);
342			/* get string arguments */
343	schorsch	3.13	if ((ob.oargs.nsargs = ogetint(2))) {
344	gwlarson	3.1	ob.oargs.sarg = (char **)malloc
345			(ob.oargs.nsargssizeof(char ));
346			if (ob.oargs.sarg == NULL)
347			goto memerr;
348			for (i = 0; i < ob.oargs.nsargs; i++)
349			ob.oargs.sarg[i] = savestr(ogetstr(sbuf));
350			} else
351			ob.oargs.sarg = NULL;
352			/* get integer arguments */
353			#ifdef IARGS
354			if (ob.oargs.niargs = ogetint(2)) {
355			ob.oargs.iarg = (long *)malloc
356			(ob.oargs.niargs*sizeof(long));
357			if (ob.oargs.iarg == NULL)
358			goto memerr;
359			for (i = 0; i < ob.oargs.niargs; i++)
360			ob.oargs.iarg[i] = ogetint(4);
361			} else
362			ob.oargs.iarg = NULL;
363			#endif
364			/* get real arguments */
365	schorsch	3.13	if ((ob.oargs.nfargs = ogetint(2))) {
366	schorsch	3.10	ob.oargs.farg = (RREAL *)malloc
367			(ob.oargs.nfargs*sizeof(RREAL));
368	gwlarson	3.1	if (ob.oargs.farg == NULL)
369			goto memerr;
370			for (i = 0; i < ob.oargs.nfargs; i++)
371			ob.oargs.farg[i] = ogetflt();
372			} else
373			ob.oargs.farg = NULL;
374			/* process object */
375			(*ofun[ob.otype].funp)(&ob);
376			/* record material if modifier */
377			if (ismodifier(ob.otype)) {
378	greg	3.16	if ((lep = lu_find(&imtab, (char *)(size_t)nobjects)) == NULL)
379	gwlarson	3.1	goto memerr;
380	greg	3.16	lep->key = (char *)(size_t)nobjects;
381	gwlarson	3.1	lep->data = (char *)getmatp(ob.oname);
382			}
383			freefargs(&ob.oargs); /* free arguments */
384			return(nobjects++); /* return object id */
385			memerr:
386			error(SYSTEM, "out of memory in loadobj");
387	schorsch	3.13	return OVOID; /* pro forma return */
388	gwlarson	3.1	}
389
390
391	greg	3.5	static void
392	gwlarson	3.1	octerror(etyp, msg) /* octree error */
393			int etyp;
394			char *msg;
395			{
396			char msgbuf[128];
397
398			sprintf(msgbuf, "(%s): %s", infn, msg);
399			error(etyp, msgbuf);
400			}