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] */

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]);

        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++;
        } else
                newheader("RADIANCE", stdout);  /* new binary file header */
        printargs(argc, argv, stdout);
        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:	2.9
Committed:	Thu Apr 14 05:02:06 1994 UTC (30 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.8:	+0 -5 lines
Log Message:	changed libpath to getlibpath()
#	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			int nowarn = 0; /* supress warnings? */
30
31			int objlim = 5; /* # of objects before split */
32
33			int resolu = 1024; /* octree resolution limit */
34
35			CUBE thescene = {EMPTY, {0.0, 0.0, 0.0}, 0.0}; /* our scene */
36
37			char ofname[MAXOBJFIL+1]; / object file names */
38			int nfiles = 0; /* number of object files */
39
40	greg	2.4	double mincusize; /* minimum cube size from resolu */
41	greg	1.1
42	greg	1.7	int (addobjnotify[])() = {NULL}; / new object notifier functions */
43
44	greg	1.1
45			main(argc, argv) /* convert object files to an octree */
46			int argc;
47			char **argv;
48			{
49	greg	2.2	extern char *getenv();
50	greg	1.1	FVECT bbmin, bbmax;
51			char *infile = NULL;
52	greg	2.6	int inpfrozen = 0;
53	greg	1.1	int outflags = IO_ALL;
54	greg	2.4	OBJECT startobj;
55	greg	1.1	int i;
56
57	greg	2.5	progname = argv[0] = fixargv0(argv[0]);
58	greg	1.1
59	greg	1.12	initotypes();
60
61	greg	1.5	for (i = 1; i < argc && argv[i][0] == '-'; i++)
62	greg	1.1	switch (argv[i][1]) {
63	greg	1.5	case '\0': /* scene from stdin */
64	greg	2.6	outflags &= ~IO_FILES;
65	greg	1.5	goto breakopt;
66	greg	1.1	case 'i': /* input octree */
67			infile = argv[++i];
68			break;
69			case 'b': /* bounding cube */
70	greg	1.2	thescene.cuorg[0] = atof(argv[++i]) - OMARGIN;
71			thescene.cuorg[1] = atof(argv[++i]) - OMARGIN;
72			thescene.cuorg[2] = atof(argv[++i]) - OMARGIN;
73			thescene.cusize = atof(argv[++i]) + 2*OMARGIN;
74	greg	1.1	break;
75			case 'n': /* set limit */
76			objlim = atoi(argv[++i]);
77			break;
78			case 'r': /* resolution limit */
79			resolu = atoi(argv[++i]);
80			break;
81			case 'f': /* freeze octree */
82			outflags &= ~IO_FILES;
83			break;
84			case 'w': /* supress warnings */
85			nowarn = 1;
86			break;
87			default:
88			sprintf(errmsg, "unknown option: '%s'", argv[i]);
89			error(USER, errmsg);
90			break;
91			}
92	greg	1.5	breakopt:
93	greg	2.4	#ifdef MSDOS
94			setmode(fileno(stdout), O_BINARY);
95			#endif
96	greg	1.1	if (infile != NULL) { /* get old octree & objects */
97			if (thescene.cusize > FTINY)
98			error(USER, "only one of '-b' or '-i'");
99			nfiles = readoct(infile, IO_ALL, &thescene, ofname);
100	greg	2.6	if (nfiles == 0)
101			inpfrozen++;
102	greg	2.8	} else
103			newheader("RADIANCE", stdout); /* new binary file header */
104	greg	2.7	printargs(argc, argv, stdout);
105	greg	1.13	fputformat(OCTFMT, stdout);
106	greg	1.1	printf("\n");
107
108			startobj = nobjects; /* previous objects already converted */
109	greg	2.5
110	greg	1.4	for ( ; i < argc; i++) /* read new scene descriptions */
111			if (!strcmp(argv[i], "-")) { /* from stdin */
112			readobj(NULL);
113			outflags &= ~IO_FILES;
114			} else { /* from file */
115			if (nfiles >= MAXOBJFIL)
116			error(INTERNAL, "too many scene files");
117			readobj(ofname[nfiles++] = argv[i]);
118			}
119
120	greg	1.1	ofname[nfiles] = NULL;
121	greg	2.6
122			if (inpfrozen && outflags & IO_FILES) {
123			error(WARNING, "frozen octree");
124			outflags &= ~IO_FILES;
125			}
126	greg	1.1	/* find bounding box */
127			bbmin[0] = bbmin[1] = bbmin[2] = FHUGE;
128			bbmax[0] = bbmax[1] = bbmax[2] = -FHUGE;
129			for (i = startobj; i < nobjects; i++)
130			add2bbox(objptr(i), bbmin, bbmax);
131			/* set/check cube */
132			if (thescene.cusize == 0.0) {
133			if (bbmin[0] <= bbmax[0]) {
134			for (i = 0; i < 3; i++) {
135	greg	1.2	bbmin[i] -= OMARGIN;
136			bbmax[i] += OMARGIN;
137	greg	1.1	}
138			for (i = 0; i < 3; i++)
139			if (bbmax[i] - bbmin[i] > thescene.cusize)
140			thescene.cusize = bbmax[i] - bbmin[i];
141	greg	1.3	for (i = 0; i < 3; i++)
142			thescene.cuorg[i] =
143			(bbmax[i]+bbmin[i]-thescene.cusize)*.5;
144	greg	1.1	}
145			} else {
146			for (i = 0; i < 3; i++)
147			if (bbmin[i] < thescene.cuorg[i] \|\|
148			bbmax[i] > thescene.cuorg[i] + thescene.cusize)
149			error(USER, "boundary does not encompass scene");
150			}
151
152			mincusize = thescene.cusize / resolu - FTINY;
153	greg	2.5
154	greg	1.1	for (i = startobj; i < nobjects; i++) /* add new objects */
155			addobject(&thescene, i);
156	greg	2.5
157	greg	1.1	thescene.cutree = combine(thescene.cutree); /* optimize */
158
159			writeoct(outflags, &thescene, ofname); /* write structures to stdout */
160
161			quit(0);
162			}
163
164
165			quit(code) /* exit program */
166			int code;
167			{
168			exit(code);
169			}
170
171
172			cputs() /* interactive error */
173			{
174			/* referenced, but not used */
175			}
176
177
178			wputs(s) /* warning message */
179			char *s;
180			{
181			if (!nowarn)
182			eputs(s);
183			}
184
185
186			eputs(s) /* put string to stderr */
187			register char *s;
188			{
189	greg	1.9	static int inln = 0;
190	greg	1.1
191	greg	1.9	if (!inln++) {
192	greg	1.1	fputs(progname, stderr);
193			fputs(": ", stderr);
194			}
195			fputs(s, stderr);
196			if (*s && s[strlen(s)-1] == '\n')
197	greg	1.9	inln = 0;
198	greg	1.1	}
199
200
201	greg	2.4	#define bitop(f,i,op) (f[((i)>>3)] op (1<<((i)&7)))
202			#define tstbit(f,i) bitop(f,i,&)
203			#define setbit(f,i) bitop(f,i,\|=)
204			#define clrbit(f,i) bitop(f,i,&=~)
205			#define tglbit(f,i) bitop(f,i,^=)
206	greg	1.11
207
208	greg	1.1	addobject(cu, obj) /* add an object to a cube */
209			register CUBE *cu;
210	greg	2.4	OBJECT obj;
211	greg	1.1	{
212			CUBE cukid;
213	greg	2.4	OCTREE ot;
214			OBJECT oset[MAXSET+1];
215	greg	2.3	unsigned char inflg[(MAXSET+7)/8], volflg[(MAXSET+7)/8];
216	greg	1.11	int in;
217	greg	1.1	register int i, j;
218
219			in = (*ofun[objptr(obj)->otype].funp)(objptr(obj), cu);
220
221	greg	1.6	if (in == O_MISS)
222	greg	1.1	return; /* no intersection */
223	greg	2.5
224	greg	1.1	if (istree(cu->cutree)) {
225			/* do children */
226			cukid.cusize = cu->cusize * 0.5;
227			for (i = 0; i < 8; i++) {
228			cukid.cutree = octkid(cu->cutree, i);
229			for (j = 0; j < 3; j++) {
230			cukid.cuorg[j] = cu->cuorg[j];
231			if ((1<<j) & i)
232			cukid.cuorg[j] += cukid.cusize;
233			}
234			addobject(&cukid, obj);
235			octkid(cu->cutree, i) = cukid.cutree;
236			}
237	greg	1.11	return;
238			}
239			if (isempty(cu->cutree)) {
240	greg	1.1	/* singular set */
241			oset[0] = 1; oset[1] = obj;
242			cu->cutree = fullnode(oset);
243	greg	1.11	return;
244			}
245			/* add to full node */
246			objset(oset, cu->cutree);
247			cukid.cusize = cu->cusize * 0.5;
248	greg	2.5
249	greg	1.11	if (in==O_IN \|\| oset[0] < objlim \|\| cukid.cusize < mincusize) {
250			/* add to set */
251			if (oset[0] >= MAXSET) {
252	greg	2.3	sprintf(errmsg, "set overflow in addobject (%s)",
253	greg	1.11	objptr(obj)->oname);
254			error(INTERNAL, errmsg);
255	greg	1.1	}
256	greg	1.11	insertelem(oset, obj);
257			cu->cutree = fullnode(oset);
258			return;
259	greg	1.1	}
260	greg	1.11	/* subdivide cube */
261			if ((ot = octalloc()) == EMPTY)
262			error(SYSTEM, "out of octree space");
263			/* mark volumes */
264			j = (oset[0]+7)>>3;
265			while (j--)
266			volflg[j] = inflg[j] = 0;
267			for (j = 1; j <= oset[0]; j++)
268			if (isvolume(objptr(oset[j])->otype)) {
269			setbit(volflg,j-1);
270			if ((*ofun[objptr(oset[j])->otype].funp)
271	greg	2.3	(objptr(oset[j]), cu) == O_IN)
272	greg	1.11	setbit(inflg,j-1);
273			}
274			/* assign subcubes */
275			for (i = 0; i < 8; i++) {
276			cukid.cutree = EMPTY;
277			for (j = 0; j < 3; j++) {
278			cukid.cuorg[j] = cu->cuorg[j];
279			if ((1<<j) & i)
280			cukid.cuorg[j] += cukid.cusize;
281			}
282			/* surfaces first */
283			for (j = 1; j <= oset[0]; j++)
284			if (!tstbit(volflg,j-1))
285			addobject(&cukid, oset[j]);
286			/* then this object */
287			addobject(&cukid, obj);
288	greg	2.3	/* then partial volumes */
289	greg	1.11	for (j = 1; j <= oset[0]; j++)
290			if (tstbit(volflg,j-1) &&
291			!tstbit(inflg,j-1))
292			addobject(&cukid, oset[j]);
293	greg	2.3	/* full volumes last */
294	greg	1.11	for (j = 1; j <= oset[0]; j++)
295			if (tstbit(inflg,j-1))
296			addobject(&cukid, oset[j]);
297			/* returned node */
298			octkid(ot, i) = cukid.cutree;
299			}
300			cu->cutree = ot;
301	greg	1.1	}