src/ot/oconv.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  oconv.c - main program for object to octree conversion.
 *
 *     7/29/85
 */

#include  "standard.h"

#include  "octree.h"

#include  "object.h"

#include  "otypes.h"

#include  "paths.h"

#define  OMARGIN        (10*FTINY)      /* margin around global cube */

#define  MAXOBJFIL      63              /* maximum number of scene files */

char  *progname;                        /* argv[0] */

char  *libpath;                         /* library search path */

int  nowarn = 0;                        /* supress warnings? */

int  objlim = 5;                        /* # of objects before split */

int  resolu = 1024;                     /* octree resolution limit */

CUBE  thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0};         /* our scene */

char  *ofname[MAXOBJFIL+1];             /* object file names */
int  nfiles = 0;                        /* number of object files */

double  mincusize;                      /* minimum cube size from resolu */

int  (*addobjnotify[])() = {NULL};      /* new object notifier functions */


main(argc, argv)                /* convert object files to an octree */
int  argc;
char  **argv;
{
        extern char  *getenv();
        FVECT  bbmin, bbmax;
        char  *infile = NULL;
        int  inpfrozen = 0;
        int  outflags = IO_ALL;
        OBJECT  startobj;
        int  i;

        progname = argv[0] = fixargv0(argv[0]);

        if ((libpath = getenv(ULIBVAR)) == NULL)
                libpath = DEFPATH;

        initotypes();

        for (i = 1; i < argc && argv[i][0] == '-'; i++)
                switch (argv[i][1]) {
                case '\0':                              /* scene from stdin */
                        outflags &= ~IO_FILES;
                        goto breakopt;
                case 'i':                               /* input octree */
                        infile = argv[++i];
                        break;
                case 'b':                               /* bounding cube */
                        thescene.cuorg[0] = atof(argv[++i]) - OMARGIN;
                        thescene.cuorg[1] = atof(argv[++i]) - OMARGIN;
                        thescene.cuorg[2] = atof(argv[++i]) - OMARGIN;
                        thescene.cusize = atof(argv[++i]) + 2*OMARGIN;
                        break;
                case 'n':                               /* set limit */
                        objlim = atoi(argv[++i]);
                        break;
                case 'r':                               /* resolution limit */
                        resolu = atoi(argv[++i]);
                        break;
                case 'f':                               /* freeze octree */
                        outflags &= ~IO_FILES;
                        break;
                case 'w':                               /* supress warnings */
                        nowarn = 1;
                        break;
                default:
                        sprintf(errmsg, "unknown option: '%s'", argv[i]);
                        error(USER, errmsg);
                        break;
                }
breakopt:
#ifdef MSDOS
        setmode(fileno(stdout), O_BINARY);
#endif
        if (infile != NULL) {           /* get old octree & objects */
                if (thescene.cusize > FTINY)
                        error(USER, "only one of '-b' or '-i'");
                nfiles = readoct(infile, IO_ALL, &thescene, ofname);
                if (nfiles == 0)
                        inpfrozen++;
        }

        printargs(argc, argv, stdout);  /* info. header */
        fputformat(OCTFMT, stdout);
        printf("\n");

        startobj = nobjects;            /* previous objects already converted */

        for ( ; i < argc; i++)          /* read new scene descriptions */
                if (!strcmp(argv[i], "-")) {    /* from stdin */
                        readobj(NULL);
                        outflags &= ~IO_FILES;
                } else {                        /* from file */
                        if (nfiles >= MAXOBJFIL)
                                error(INTERNAL, "too many scene files");
                        readobj(ofname[nfiles++] = argv[i]);
                }

        ofname[nfiles] = NULL;

        if (inpfrozen && outflags & IO_FILES) {
                error(WARNING, "frozen octree");
                outflags &= ~IO_FILES;
        }
                                                /* find bounding box */
        bbmin[0] = bbmin[1] = bbmin[2] = FHUGE;
        bbmax[0] = bbmax[1] = bbmax[2] = -FHUGE;
        for (i = startobj; i < nobjects; i++)
                add2bbox(objptr(i), bbmin, bbmax);
                                                /* set/check cube */
        if (thescene.cusize == 0.0) {
                if (bbmin[0] <= bbmax[0]) {
                        for (i = 0; i < 3; i++) {
                                bbmin[i] -= OMARGIN;
                                bbmax[i] += OMARGIN;
                        }
                        for (i = 0; i < 3; i++)
                                if (bbmax[i] - bbmin[i] > thescene.cusize)
                                        thescene.cusize = bbmax[i] - bbmin[i];
                        for (i = 0; i < 3; i++)
                                thescene.cuorg[i] =
                                        (bbmax[i]+bbmin[i]-thescene.cusize)*.5;
                }
        } else {
                for (i = 0; i < 3; i++)
                        if (bbmin[i] < thescene.cuorg[i] ||
                                bbmax[i] > thescene.cuorg[i] + thescene.cusize)
                                error(USER, "boundary does not encompass scene");
        }

        mincusize = thescene.cusize / resolu - FTINY;

        for (i = startobj; i < nobjects; i++)           /* add new objects */
                addobject(&thescene, i);

        thescene.cutree = combine(thescene.cutree);     /* optimize */

        writeoct(outflags, &thescene, ofname);  /* write structures to stdout */

        quit(0);
}


quit(code)                              /* exit program */
int  code;
{
        exit(code);
}


cputs()                                 /* interactive error */
{
        /* referenced, but not used */
}


wputs(s)                                /* warning message */
char  *s;
{
        if (!nowarn)
                eputs(s);
}


eputs(s)                                /* put string to stderr */
register char  *s;
{
        static int  inln = 0;

        if (!inln++) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (*s && s[strlen(s)-1] == '\n')
                inln = 0;
}


#define  bitop(f,i,op)          (f[((i)>>3)] op (1<<((i)&7)))
#define  tstbit(f,i)            bitop(f,i,&)
#define  setbit(f,i)            bitop(f,i,|=)
#define  clrbit(f,i)            bitop(f,i,&=~)
#define  tglbit(f,i)            bitop(f,i,^=)


addobject(cu, obj)                      /* add an object to a cube */
register CUBE  *cu;
OBJECT  obj;
{
        CUBE  cukid;
        OCTREE  ot;
        OBJECT  oset[MAXSET+1];
        unsigned char  inflg[(MAXSET+7)/8], volflg[(MAXSET+7)/8];
        int  in;
        register int  i, j;

        in = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu);

        if (in == O_MISS)
                return;                         /* no intersection */

        if (istree(cu->cutree)) {
                                                /* do children */
                cukid.cusize = cu->cusize * 0.5;
                for (i = 0; i < 8; i++) {
                        cukid.cutree = octkid(cu->cutree, i);
                        for (j = 0; j < 3; j++) {
                                cukid.cuorg[j] = cu->cuorg[j];
                                if ((1<<j) & i)
                                        cukid.cuorg[j] += cukid.cusize;
                        }
                        addobject(&cukid, obj);
                        octkid(cu->cutree, i) = cukid.cutree;
                }
                return;
        }
        if (isempty(cu->cutree)) {
                                                /* singular set */
                oset[0] = 1; oset[1] = obj;
                cu->cutree = fullnode(oset);
                return;
        }
                                        /* add to full node */
        objset(oset, cu->cutree);
        cukid.cusize = cu->cusize * 0.5;

        if (in==O_IN || oset[0] < objlim || cukid.cusize < mincusize) {
                                                /* add to set */
                if (oset[0] >= MAXSET) {
                        sprintf(errmsg, "set overflow in addobject (%s)",
                                        objptr(obj)->oname);
                        error(INTERNAL, errmsg);
                }
                insertelem(oset, obj);
                cu->cutree = fullnode(oset);
                return;
        }
                                        /* subdivide cube */
        if ((ot = octalloc()) == EMPTY)
                error(SYSTEM, "out of octree space");
                                        /* mark volumes */
        j = (oset[0]+7)>>3;
        while (j--)
                volflg[j] = inflg[j] = 0;
        for (j = 1; j <= oset[0]; j++)
                if (isvolume(objptr(oset[j])->otype)) {
                        setbit(volflg,j-1);
                        if ((*ofun[objptr(oset[j])->otype].funp)
                                        (objptr(oset[j]), cu) == O_IN)
                                setbit(inflg,j-1);
                }
                                        /* assign subcubes */
        for (i = 0; i < 8; i++) {
                cukid.cutree = EMPTY;
                for (j = 0; j < 3; j++) {
                        cukid.cuorg[j] = cu->cuorg[j];
                        if ((1<<j) & i)
                                cukid.cuorg[j] += cukid.cusize;
                }
                                        /* surfaces first */
                for (j = 1; j <= oset[0]; j++)
                        if (!tstbit(volflg,j-1))
                                addobject(&cukid, oset[j]);
                                        /* then this object */
                addobject(&cukid, obj);
                                        /* then partial volumes */
                for (j = 1; j <= oset[0]; j++)
                        if (tstbit(volflg,j-1) &&
                                        !tstbit(inflg,j-1))
                                addobject(&cukid, oset[j]);
                                        /* full volumes last */
                for (j = 1; j <= oset[0]; j++)
                        if (tstbit(inflg,j-1))
                                addobject(&cukid, oset[j]);
                                        /* returned node */
                octkid(ot, i) = cukid.cutree;
        }
        cu->cutree = ot;
}
Revision:	2.6
Committed:	Fri Feb 12 18:43:24 1993 UTC (32 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+9 -4 lines
Log Message:	made it so reading from stdin avoids "frozen octree" warning
#	User	Rev	Content
1	greg	2.4	/* Copyright (c) 1992 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* oconv.c - main program for object to octree conversion.
9			*
10			* 7/29/85
11			*/
12
13			#include "standard.h"
14
15			#include "octree.h"
16
17			#include "object.h"
18
19			#include "otypes.h"
20
21	greg	2.4	#include "paths.h"
22	greg	1.14
23	greg	2.4	#define OMARGIN (10FTINY) / margin around global cube */
24	greg	1.2
25	greg	2.4	#define MAXOBJFIL 63 /* maximum number of scene files */
26	greg	1.1
27			char progname; / argv[0] */
28
29			char libpath; / library search path */
30
31			int nowarn = 0; /* supress warnings? */
32
33			int objlim = 5; /* # of objects before split */
34
35			int resolu = 1024; /* octree resolution limit */
36
37			CUBE thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0}; /* our scene */
38
39			char ofname[MAXOBJFIL+1]; / object file names */
40			int nfiles = 0; /* number of object files */
41
42	greg	2.4	double mincusize; /* minimum cube size from resolu */
43	greg	1.1
44	greg	1.7	int (addobjnotify[])() = {NULL}; / new object notifier functions */
45
46	greg	1.1
47			main(argc, argv) /* convert object files to an octree */
48			int argc;
49			char **argv;
50			{
51	greg	2.2	extern char *getenv();
52	greg	1.1	FVECT bbmin, bbmax;
53			char *infile = NULL;
54	greg	2.6	int inpfrozen = 0;
55	greg	1.1	int outflags = IO_ALL;
56	greg	2.4	OBJECT startobj;
57	greg	1.1	int i;
58
59	greg	2.5	progname = argv[0] = fixargv0(argv[0]);
60
61	greg	2.4	if ((libpath = getenv(ULIBVAR)) == NULL)
62	greg	1.14	libpath = DEFPATH;
63	greg	1.1
64	greg	1.12	initotypes();
65
66	greg	1.5	for (i = 1; i < argc && argv[i][0] == '-'; i++)
67	greg	1.1	switch (argv[i][1]) {
68	greg	1.5	case '\0': /* scene from stdin */
69	greg	2.6	outflags &= ~IO_FILES;
70	greg	1.5	goto breakopt;
71	greg	1.1	case 'i': /* input octree */
72			infile = argv[++i];
73			break;
74			case 'b': /* bounding cube */
75	greg	1.2	thescene.cuorg[0] = atof(argv[++i]) - OMARGIN;
76			thescene.cuorg[1] = atof(argv[++i]) - OMARGIN;
77			thescene.cuorg[2] = atof(argv[++i]) - OMARGIN;
78			thescene.cusize = atof(argv[++i]) + 2*OMARGIN;
79	greg	1.1	break;
80			case 'n': /* set limit */
81			objlim = atoi(argv[++i]);
82			break;
83			case 'r': /* resolution limit */
84			resolu = atoi(argv[++i]);
85			break;
86			case 'f': /* freeze octree */
87			outflags &= ~IO_FILES;
88			break;
89			case 'w': /* supress warnings */
90			nowarn = 1;
91			break;
92			default:
93			sprintf(errmsg, "unknown option: '%s'", argv[i]);
94			error(USER, errmsg);
95			break;
96			}
97	greg	1.5	breakopt:
98	greg	2.4	#ifdef MSDOS
99			setmode(fileno(stdout), O_BINARY);
100			#endif
101	greg	1.1	if (infile != NULL) { /* get old octree & objects */
102			if (thescene.cusize > FTINY)
103			error(USER, "only one of '-b' or '-i'");
104			nfiles = readoct(infile, IO_ALL, &thescene, ofname);
105	greg	2.6	if (nfiles == 0)
106			inpfrozen++;
107	greg	1.1	}
108
109			printargs(argc, argv, stdout); /* info. header */
110	greg	1.13	fputformat(OCTFMT, stdout);
111	greg	1.1	printf("\n");
112
113			startobj = nobjects; /* previous objects already converted */
114	greg	2.5
115	greg	1.4	for ( ; i < argc; i++) /* read new scene descriptions */
116			if (!strcmp(argv[i], "-")) { /* from stdin */
117			readobj(NULL);
118			outflags &= ~IO_FILES;
119			} else { /* from file */
120			if (nfiles >= MAXOBJFIL)
121			error(INTERNAL, "too many scene files");
122			readobj(ofname[nfiles++] = argv[i]);
123			}
124
125	greg	1.1	ofname[nfiles] = NULL;
126	greg	2.6
127			if (inpfrozen && outflags & IO_FILES) {
128			error(WARNING, "frozen octree");
129			outflags &= ~IO_FILES;
130			}
131	greg	1.1	/* find bounding box */
132			bbmin[0] = bbmin[1] = bbmin[2] = FHUGE;
133			bbmax[0] = bbmax[1] = bbmax[2] = -FHUGE;
134			for (i = startobj; i < nobjects; i++)
135			add2bbox(objptr(i), bbmin, bbmax);
136			/* set/check cube */
137			if (thescene.cusize == 0.0) {
138			if (bbmin[0] <= bbmax[0]) {
139			for (i = 0; i < 3; i++) {
140	greg	1.2	bbmin[i] -= OMARGIN;
141			bbmax[i] += OMARGIN;
142	greg	1.1	}
143			for (i = 0; i < 3; i++)
144			if (bbmax[i] - bbmin[i] > thescene.cusize)
145			thescene.cusize = bbmax[i] - bbmin[i];
146	greg	1.3	for (i = 0; i < 3; i++)
147			thescene.cuorg[i] =
148			(bbmax[i]+bbmin[i]-thescene.cusize)*.5;
149	greg	1.1	}
150			} else {
151			for (i = 0; i < 3; i++)
152			if (bbmin[i] < thescene.cuorg[i] \|\|
153			bbmax[i] > thescene.cuorg[i] + thescene.cusize)
154			error(USER, "boundary does not encompass scene");
155			}
156
157			mincusize = thescene.cusize / resolu - FTINY;
158	greg	2.5
159	greg	1.1	for (i = startobj; i < nobjects; i++) /* add new objects */
160			addobject(&thescene, i);
161	greg	2.5
162	greg	1.1	thescene.cutree = combine(thescene.cutree); /* optimize */
163
164			writeoct(outflags, &thescene, ofname); /* write structures to stdout */
165
166			quit(0);
167			}
168
169
170			quit(code) /* exit program */
171			int code;
172			{
173			exit(code);
174			}
175
176
177			cputs() /* interactive error */
178			{
179			/* referenced, but not used */
180			}
181
182
183			wputs(s) /* warning message */
184			char *s;
185			{
186			if (!nowarn)
187			eputs(s);
188			}
189
190
191			eputs(s) /* put string to stderr */
192			register char *s;
193			{
194	greg	1.9	static int inln = 0;
195	greg	1.1
196	greg	1.9	if (!inln++) {
197	greg	1.1	fputs(progname, stderr);
198			fputs(": ", stderr);
199			}
200			fputs(s, stderr);
201			if (*s && s[strlen(s)-1] == '\n')
202	greg	1.9	inln = 0;
203	greg	1.1	}
204
205
206	greg	2.4	#define bitop(f,i,op) (f[((i)>>3)] op (1<<((i)&7)))
207			#define tstbit(f,i) bitop(f,i,&)
208			#define setbit(f,i) bitop(f,i,\|=)
209			#define clrbit(f,i) bitop(f,i,&=~)
210			#define tglbit(f,i) bitop(f,i,^=)
211	greg	1.11
212
213	greg	1.1	addobject(cu, obj) /* add an object to a cube */
214			register CUBE *cu;
215	greg	2.4	OBJECT obj;
216	greg	1.1	{
217			CUBE cukid;
218	greg	2.4	OCTREE ot;
219			OBJECT oset[MAXSET+1];
220	greg	2.3	unsigned char inflg[(MAXSET+7)/8], volflg[(MAXSET+7)/8];
221	greg	1.11	int in;
222	greg	1.1	register int i, j;
223
224			in = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu);
225
226	greg	1.6	if (in == O_MISS)
227	greg	1.1	return; /* no intersection */
228	greg	2.5
229	greg	1.1	if (istree(cu->cutree)) {
230			/* do children */
231			cukid.cusize = cu->cusize * 0.5;
232			for (i = 0; i < 8; i++) {
233			cukid.cutree = octkid(cu->cutree, i);
234			for (j = 0; j < 3; j++) {
235			cukid.cuorg[j] = cu->cuorg[j];
236			if ((1<<j) & i)
237			cukid.cuorg[j] += cukid.cusize;
238			}
239			addobject(&cukid, obj);
240			octkid(cu->cutree, i) = cukid.cutree;
241			}
242	greg	1.11	return;
243			}
244			if (isempty(cu->cutree)) {
245	greg	1.1	/* singular set */
246			oset[0] = 1; oset[1] = obj;
247			cu->cutree = fullnode(oset);
248	greg	1.11	return;
249			}
250			/* add to full node */
251			objset(oset, cu->cutree);
252			cukid.cusize = cu->cusize * 0.5;
253	greg	2.5
254	greg	1.11	if (in==O_IN \|\| oset[0] < objlim \|\| cukid.cusize < mincusize) {
255			/* add to set */
256			if (oset[0] >= MAXSET) {
257	greg	2.3	sprintf(errmsg, "set overflow in addobject (%s)",
258	greg	1.11	objptr(obj)->oname);
259			error(INTERNAL, errmsg);
260	greg	1.1	}
261	greg	1.11	insertelem(oset, obj);
262			cu->cutree = fullnode(oset);
263			return;
264	greg	1.1	}
265	greg	1.11	/* subdivide cube */
266			if ((ot = octalloc()) == EMPTY)
267			error(SYSTEM, "out of octree space");
268			/* mark volumes */
269			j = (oset[0]+7)>>3;
270			while (j--)
271			volflg[j] = inflg[j] = 0;
272			for (j = 1; j <= oset[0]; j++)
273			if (isvolume(objptr(oset[j])->otype)) {
274			setbit(volflg,j-1);
275			if ((*ofun[objptr(oset[j])->otype].funp)
276	greg	2.3	(objptr(oset[j]), cu) == O_IN)
277	greg	1.11	setbit(inflg,j-1);
278			}
279			/* assign subcubes */
280			for (i = 0; i < 8; i++) {
281			cukid.cutree = EMPTY;
282			for (j = 0; j < 3; j++) {
283			cukid.cuorg[j] = cu->cuorg[j];
284			if ((1<<j) & i)
285			cukid.cuorg[j] += cukid.cusize;
286			}
287			/* surfaces first */
288			for (j = 1; j <= oset[0]; j++)
289			if (!tstbit(volflg,j-1))
290			addobject(&cukid, oset[j]);
291			/* then this object */
292			addobject(&cukid, obj);
293	greg	2.3	/* then partial volumes */
294	greg	1.11	for (j = 1; j <= oset[0]; j++)
295			if (tstbit(volflg,j-1) &&
296			!tstbit(inflg,j-1))
297			addobject(&cukid, oset[j]);
298	greg	2.3	/* full volumes last */
299	greg	1.11	for (j = 1; j <= oset[0]; j++)
300			if (tstbit(inflg,j-1))
301			addobject(&cukid, oset[j]);
302			/* returned node */
303			octkid(ot, i) = cukid.cutree;
304			}
305			cu->cutree = ot;
306	greg	1.1	}