src/rt/rtrace.c

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

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

/*
 *  rtrace.c - program and variables for individual ray tracing.
 *
 *     6/11/86
 */

/*
 *  Input is in the form:
 *
 *      xorg    yorg    zorg    xdir    ydir    zdir
 *
 *  The direction need not be normalized.  Output is flexible.
 *  If the direction vector is (0,0,0), then the output is flushed.
 *  All values default to ascii representation of real
 *  numbers.  Binary representations can be selected
 *  with '-ff' for float or '-fd' for double.  By default,
 *  radiance is computed.  The '-i' or '-I' options indicate that
 *  irradiance values are desired.
 */

#include  "ray.h"

#include  "octree.h"

#include  "otypes.h"

#include  "resolu.h"

int  dimlist[MAXDIM];                   /* sampling dimensions */
int  ndims = 0;                         /* number of sampling dimensions */
int  samplendx = 0;                     /* index for this sample */

int  imm_irrad = 0;                     /* compute immediate irradiance? */

int  inform = 'a';                      /* input format */
int  outform = 'a';                     /* output format */
char  *outvals = "v";                   /* output specification */

int  hresolu = 0;                       /* horizontal (scan) size */
int  vresolu = 0;                       /* vertical resolution */

double  dstrsrc = 0.0;                  /* square source distribution */
double  shadthresh = .05;               /* shadow threshold */
double  shadcert = .5;                  /* shadow certainty */
int  directrelay = 1;                   /* number of source relays */
int  vspretest = 512;                   /* virtual source pretest density */
int  directinvis = 0;                   /* sources invisible? */
double  srcsizerat = .25;               /* maximum ratio source size/dist. */

double  specthresh = .15;               /* specular sampling threshold */
double  specjitter = 1.;                /* specular sampling jitter */

int  maxdepth = 6;                      /* maximum recursion depth */
double  minweight = 4e-3;               /* minimum ray weight */

COLOR  ambval = BLKCOLOR;               /* ambient value */
double  ambacc = 0.2;                   /* ambient accuracy */
int  ambres = 32;                       /* ambient resolution */
int  ambdiv = 128;                      /* ambient divisions */
int  ambssamp = 0;                      /* ambient super-samples */
int  ambounce = 0;                      /* ambient bounces */
char  *amblist[128];                    /* ambient include/exclude list */
int  ambincl = -1;                      /* include == 1, exclude == 0 */

extern OBJREC  Lamb;                    /* a Lambertian surface */

static RAY  thisray;                    /* for our convenience */

static int  oputo(), oputd(), oputv(), oputl(), oputL(),
                oputp(), oputn(), oputs(), oputw(), oputm();

static int  (*ray_out[10])(), (*every_out[10])();
static int  castonly;

static int  puta(), putf(), putd();

static int  (*putreal)();


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


char *
formstr(f)                              /* return format identifier */
int  f;
{
        switch (f) {
        case 'a': return("ascii");
        case 'f': return("float");
        case 'd': return("double");
        case 'c': return(COLRFMT);
        }
        return("unknown");
}


rtrace(fname)                           /* trace rays from file */
char  *fname;
{
        long  vcount = hresolu>1 ? hresolu*vresolu : vresolu;
        long  nextflush = hresolu;
        FILE  *fp;
        FVECT  orig, direc;
                                        /* set up input */
        if (fname == NULL)
                fp = stdin;
        else if ((fp = fopen(fname, "r")) == NULL) {
                sprintf(errmsg, "cannot open input file \"%s\"", fname);
                error(SYSTEM, errmsg);
        }
#ifdef MSDOS
        if (inform != 'a')
                setmode(fileno(fp), O_BINARY);
#endif
                                        /* set up output */
        setoutput(outvals);
        switch (outform) {
        case 'a': putreal = puta; break;
        case 'f': putreal = putf; break;
        case 'd': putreal = putd; break;
        case 'c': 
                if (strcmp(outvals, "v"))
                        error(USER, "color format with value output only");
                break;
        default:
                error(CONSISTENCY, "botched output format");
        }
        if (hresolu > 0 && vresolu > 0)
                fprtresolu(hresolu, vresolu, stdout);
                                        /* process file */
        while (getvec(orig, inform, fp) == 0 &&
                        getvec(direc, inform, fp) == 0) {

                if (normalize(direc) == 0.0) {          /* zero ==> flush */
                        fflush(stdout);
                        continue;
                }
                samplendx++;
                                                        /* compute and print */
                if (imm_irrad)
                        irrad(orig, direc);
                else
                        traceray(orig, direc);
                                                        /* flush if time */
                if (--nextflush == 0) {
                        fflush(stdout);
                        nextflush = hresolu;
                }
                if (ferror(stdout))
                        error(SYSTEM, "write error");
                if (--vcount == 0)                      /* check for end */
                        break;
        }
        if (vcount > 0)
                error(USER, "read error");
        fclose(fp);
}


setoutput(vs)                           /* set up output tables */
register char  *vs;
{
        extern int  ourtrace(), (*trace)();
        register int (**table)() = ray_out;

        castonly = 1;
        while (*vs)
                switch (*vs++) {
                case 't':                               /* trace */
                        *table = NULL;
                        table = every_out;
                        trace = ourtrace;
                        castonly = 0;
                        break;
                case 'o':                               /* origin */
                        *table++ = oputo;
                        break;
                case 'd':                               /* direction */
                        *table++ = oputd;
                        break;
                case 'v':                               /* value */
                        *table++ = oputv;
                        castonly = 0;
                        break;
                case 'l':                               /* effective distance */
                        *table++ = oputl;
                        castonly = 0;
                        break;
                case 'L':                               /* single ray length */
                        *table++ = oputL;
                        break;
                case 'p':                               /* point */
                        *table++ = oputp;
                        break;
                case 'n':                               /* normal */
                        *table++ = oputn;
                        break;
                case 's':                               /* surface */
                        *table++ = oputs;
                        break;
                case 'w':                               /* weight */
                        *table++ = oputw;
                        break;
                case 'm':                               /* modifier */
                        *table++ = oputm;
                        break;
                }
        *table = NULL;
}


traceray(org, dir)              /* compute and print ray value(s) */
FVECT  org, dir;
{
        register int  (**tp)();

        VCOPY(thisray.rorg, org);
        VCOPY(thisray.rdir, dir);
        rayorigin(&thisray, NULL, PRIMARY, 1.0);
        if (castonly)
                localhit(&thisray, &thescene) || sourcehit(&thisray);
        else
                rayvalue(&thisray);

        if (ray_out[0] == NULL)
                return;
        for (tp = ray_out; *tp != NULL; tp++)
                (**tp)(&thisray);
        if (outform == 'a')
                putchar('\n');
}


irrad(org, dir)                 /* compute immediate irradiance value */
FVECT  org, dir;
{
        register int  i;

        for (i = 0; i < 3; i++) {
                thisray.rorg[i] = org[i] + dir[i];
                thisray.rdir[i] = -dir[i];
        }
        rayorigin(&thisray, NULL, PRIMARY, 1.0);
                                        /* pretend we hit surface */
        thisray.rot = 1.0;
        thisray.rod = 1.0;
        VCOPY(thisray.ron, dir);
        for (i = 0; i < 3; i++)         /* fudge factor */
                thisray.rop[i] = org[i] + 1e-4*dir[i];
                                        /* compute and print */
        (*ofun[Lamb.otype].funp)(&Lamb, &thisray);
        oputv(&thisray);
        if (outform == 'a')
                putchar('\n');
}


getvec(vec, fmt, fp)            /* get a vector from fp */
register FVECT  vec;
int  fmt;
FILE  *fp;
{
        extern char  *fgetword();
        static float  vf[3];
        static double  vd[3];
        char  buf[32];
        register int  i;

        switch (fmt) {
        case 'a':                                       /* ascii */
                for (i = 0; i < 3; i++) {
                        if (fgetword(buf, sizeof(buf), fp) == NULL ||
                                        !isflt(buf))
                                return(-1);
                        vec[i] = atof(buf);
                }
                break;
        case 'f':                                       /* binary float */
                if (fread((char *)vf, sizeof(float), 3, fp) != 3)
                        return(-1);
                vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2];
                break;
        case 'd':                                       /* binary double */
                if (fread((char *)vd, sizeof(double), 3, fp) != 3)
                        return(-1);
                vec[0] = vd[0]; vec[1] = vd[1]; vec[2] = vd[2];
                break;
        default:
                error(CONSISTENCY, "botched input format");
        }
        return(0);
}


static
ourtrace(r)                             /* print ray values */
RAY  *r;
{
        register int  (**tp)();

        if (every_out[0] == NULL)
                return;
        tabin(r);
        for (tp = every_out; *tp != NULL; tp++)
                (**tp)(r);
        putchar('\n');
}


static
tabin(r)                                /* tab in appropriate amount */
RAY  *r;
{
        register RAY  *rp;

        for (rp = r->parent; rp != NULL; rp = rp->parent)
                putchar('\t');
}


static
oputo(r)                                /* print origin */
register RAY  *r;
{
        (*putreal)(r->rorg[0]);
        (*putreal)(r->rorg[1]);
        (*putreal)(r->rorg[2]);
}


static
oputd(r)                                /* print direction */
register RAY  *r;
{
        (*putreal)(r->rdir[0]);
        (*putreal)(r->rdir[1]);
        (*putreal)(r->rdir[2]);
}


static
oputv(r)                                /* print value */
register RAY  *r;
{
        COLR  cout;
        
        if (outform == 'c') {
                setcolr(cout,   colval(r->rcol,RED),
                                colval(r->rcol,GRN),
                                colval(r->rcol,BLU));
                fwrite((char *)cout, sizeof(cout), 1, stdout);
                return;
        }
        (*putreal)(colval(r->rcol,RED));
        (*putreal)(colval(r->rcol,GRN));
        (*putreal)(colval(r->rcol,BLU));
}


static
oputl(r)                                /* print effective distance */
register RAY  *r;
{
        (*putreal)(r->rt);
}


static
oputL(r)                                /* print single ray length */
register RAY  *r;
{
        (*putreal)(r->rot);
}


static
oputp(r)                                /* print point */
register RAY  *r;
{
        if (r->rot < FHUGE) {
                (*putreal)(r->rop[0]);
                (*putreal)(r->rop[1]);
                (*putreal)(r->rop[2]);
        } else {
                (*putreal)(0.0);
                (*putreal)(0.0);
                (*putreal)(0.0);
        }
}


static
oputn(r)                                /* print normal */
register RAY  *r;
{
        if (r->rot < FHUGE) {
                (*putreal)(r->ron[0]);
                (*putreal)(r->ron[1]);
                (*putreal)(r->ron[2]);
        } else {
                (*putreal)(0.0);
                (*putreal)(0.0);
                (*putreal)(0.0);
        }
}


static
oputs(r)                                /* print name */
register RAY  *r;
{
        if (r->ro != NULL)
                fputs(r->ro->oname, stdout);
        else
                putchar('*');
        putchar('\t');
}


static
oputw(r)                                /* print weight */
register RAY  *r;
{
        (*putreal)(r->rweight);
}


static
oputm(r)                                /* print modifier */
register RAY  *r;
{
        if (r->ro != NULL)
                fputs(objptr(r->ro->omod)->oname, stdout);
        else
                putchar('*');
        putchar('\t');
}


static
puta(v)                         /* print ascii value */
double  v;
{
        printf("%e\t", v);
}


static
putd(v)                         /* print binary double */
double  v;
{
        fwrite((char *)&v, sizeof(v), 1, stdout);
}


static
putf(v)                         /* print binary float */
double  v;
{
        float f = v;

        fwrite((char *)&f, sizeof(f), 1, stdout);
}
Revision:	2.8
Committed:	Thu Oct 15 21:13:21 1992 UTC (31 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.7:	+4 -0 lines
Log Message:	added setmode(fd,O_BINARY) where needed for MSDOS
#	User	Rev	Content
1	greg	2.6	/* 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			* rtrace.c - program and variables for individual ray tracing.
9			*
10			* 6/11/86
11			*/
12
13			/*
14			* Input is in the form:
15			*
16			* xorg yorg zorg xdir ydir zdir
17			*
18			* The direction need not be normalized. Output is flexible.
19	greg	1.7	* If the direction vector is (0,0,0), then the output is flushed.
20	greg	1.1	* All values default to ascii representation of real
21			* numbers. Binary representations can be selected
22			* with '-ff' for float or '-fd' for double. By default,
23	greg	1.13	* radiance is computed. The '-i' or '-I' options indicate that
24	greg	1.1	* irradiance values are desired.
25			*/
26
27			#include "ray.h"
28
29	greg	1.11	#include "octree.h"
30
31	greg	1.1	#include "otypes.h"
32
33	greg	2.6	#include "resolu.h"
34
35	greg	1.14	int dimlist[MAXDIM]; /* sampling dimensions */
36			int ndims = 0; /* number of sampling dimensions */
37			int samplendx = 0; /* index for this sample */
38
39	greg	1.13	int imm_irrad = 0; /* compute immediate irradiance? */
40
41	greg	1.1	int inform = 'a'; /* input format */
42			int outform = 'a'; /* output format */
43			char outvals = "v"; / output specification */
44
45			int hresolu = 0; /* horizontal (scan) size */
46			int vresolu = 0; /* vertical resolution */
47
48			double dstrsrc = 0.0; /* square source distribution */
49	greg	1.4	double shadthresh = .05; /* shadow threshold */
50	greg	1.5	double shadcert = .5; /* shadow certainty */
51	greg	1.20	int directrelay = 1; /* number of source relays */
52	greg	1.17	int vspretest = 512; /* virtual source pretest density */
53	greg	1.18	int directinvis = 0; /* sources invisible? */
54	greg	1.20	double srcsizerat = .25; /* maximum ratio source size/dist. */
55	greg	1.1
56	greg	2.4	double specthresh = .15; /* specular sampling threshold */
57	greg	2.3	double specjitter = 1.; /* specular sampling jitter */
58
59	greg	1.1	int maxdepth = 6; /* maximum recursion depth */
60			double minweight = 4e-3; /* minimum ray weight */
61
62			COLOR ambval = BLKCOLOR; /* ambient value */
63			double ambacc = 0.2; /* ambient accuracy */
64	greg	1.6	int ambres = 32; /* ambient resolution */
65	greg	1.1	int ambdiv = 128; /* ambient divisions */
66			int ambssamp = 0; /* ambient super-samples */
67			int ambounce = 0; /* ambient bounces */
68			char amblist[128]; / ambient include/exclude list */
69			int ambincl = -1; /* include == 1, exclude == 0 */
70
71	greg	1.13	extern OBJREC Lamb; /* a Lambertian surface */
72
73	greg	1.1	static RAY thisray; /* for our convenience */
74
75	greg	2.5	static int oputo(), oputd(), oputv(), oputl(), oputL(),
76	greg	1.1	oputp(), oputn(), oputs(), oputw(), oputm();
77
78			static int (ray_out[10])(), (every_out[10])();
79	greg	1.11	static int castonly;
80	greg	1.1
81	greg	1.10	static int puta(), putf(), putd();
82	greg	1.1
83			static int (*putreal)();
84
85
86			quit(code) /* quit program */
87			int code;
88			{
89			exit(code);
90			}
91
92
93	greg	2.6	char *
94			formstr(f) /* return format identifier */
95			int f;
96			{
97			switch (f) {
98			case 'a': return("ascii");
99			case 'f': return("float");
100			case 'd': return("double");
101			case 'c': return(COLRFMT);
102			}
103			return("unknown");
104			}
105
106
107	greg	1.1	rtrace(fname) /* trace rays from file */
108			char *fname;
109			{
110			long vcount = hresolu>1 ? hresolu*vresolu : vresolu;
111			long nextflush = hresolu;
112			FILE *fp;
113	greg	1.2	FVECT orig, direc;
114	greg	1.1	/* set up input */
115			if (fname == NULL)
116			fp = stdin;
117			else if ((fp = fopen(fname, "r")) == NULL) {
118			sprintf(errmsg, "cannot open input file \"%s\"", fname);
119			error(SYSTEM, errmsg);
120			}
121	greg	2.8	#ifdef MSDOS
122			if (inform != 'a')
123			setmode(fileno(fp), O_BINARY);
124			#endif
125	greg	1.1	/* set up output */
126			setoutput(outvals);
127			switch (outform) {
128			case 'a': putreal = puta; break;
129			case 'f': putreal = putf; break;
130			case 'd': putreal = putd; break;
131	greg	2.6	case 'c':
132			if (strcmp(outvals, "v"))
133			error(USER, "color format with value output only");
134			break;
135			default:
136			error(CONSISTENCY, "botched output format");
137	greg	1.1	}
138	greg	2.6	if (hresolu > 0 && vresolu > 0)
139			fprtresolu(hresolu, vresolu, stdout);
140	greg	1.1	/* process file */
141			while (getvec(orig, inform, fp) == 0 &&
142			getvec(direc, inform, fp) == 0) {
143
144	greg	1.7	if (normalize(direc) == 0.0) { /* zero ==> flush */
145			fflush(stdout);
146			continue;
147			}
148	greg	1.14	samplendx++;
149	greg	1.1	/* compute and print */
150	greg	1.13	if (imm_irrad)
151	greg	1.1	irrad(orig, direc);
152			else
153	greg	1.13	traceray(orig, direc);
154	greg	1.7	/* flush if time */
155	greg	1.1	if (--nextflush == 0) {
156			fflush(stdout);
157			nextflush = hresolu;
158			}
159			if (ferror(stdout))
160			error(SYSTEM, "write error");
161			if (--vcount == 0) /* check for end */
162			break;
163			}
164			if (vcount > 0)
165			error(USER, "read error");
166			fclose(fp);
167			}
168
169
170			setoutput(vs) /* set up output tables */
171			register char *vs;
172			{
173			extern int ourtrace(), (*trace)();
174			register int (**table)() = ray_out;
175
176	greg	1.11	castonly = 1;
177	greg	1.1	while (*vs)
178			switch (*vs++) {
179			case 't': /* trace */
180			*table = NULL;
181			table = every_out;
182			trace = ourtrace;
183	greg	1.11	castonly = 0;
184	greg	1.1	break;
185			case 'o': /* origin */
186			*table++ = oputo;
187			break;
188			case 'd': /* direction */
189			*table++ = oputd;
190			break;
191			case 'v': /* value */
192			*table++ = oputv;
193	greg	1.11	castonly = 0;
194	greg	1.1	break;
195	greg	2.5	case 'l': /* effective distance */
196	greg	1.1	*table++ = oputl;
197	greg	1.11	castonly = 0;
198	greg	1.1	break;
199	greg	2.5	case 'L': /* single ray length */
200			*table++ = oputL;
201			break;
202	greg	1.1	case 'p': /* point */
203			*table++ = oputp;
204			break;
205			case 'n': /* normal */
206			*table++ = oputn;
207			break;
208			case 's': /* surface */
209			*table++ = oputs;
210			break;
211			case 'w': /* weight */
212			*table++ = oputw;
213			break;
214			case 'm': /* modifier */
215			*table++ = oputm;
216			break;
217			}
218			*table = NULL;
219			}
220
221
222	greg	1.13	traceray(org, dir) /* compute and print ray value(s) */
223	greg	1.1	FVECT org, dir;
224			{
225			register int (**tp)();
226
227			VCOPY(thisray.rorg, org);
228			VCOPY(thisray.rdir, dir);
229			rayorigin(&thisray, NULL, PRIMARY, 1.0);
230	greg	1.11	if (castonly)
231			localhit(&thisray, &thescene) \|\| sourcehit(&thisray);
232			else
233			rayvalue(&thisray);
234	greg	1.1
235			if (ray_out[0] == NULL)
236			return;
237			for (tp = ray_out; *tp != NULL; tp++)
238			(**tp)(&thisray);
239			if (outform == 'a')
240			putchar('\n');
241			}
242
243
244	greg	1.13	irrad(org, dir) /* compute immediate irradiance value */
245	greg	1.1	FVECT org, dir;
246			{
247			register int i;
248
249			for (i = 0; i < 3; i++) {
250			thisray.rorg[i] = org[i] + dir[i];
251			thisray.rdir[i] = -dir[i];
252			}
253			rayorigin(&thisray, NULL, PRIMARY, 1.0);
254			/* pretend we hit surface */
255			thisray.rot = 1.0;
256			thisray.rod = 1.0;
257			VCOPY(thisray.ron, dir);
258			for (i = 0; i < 3; i++) /* fudge factor */
259			thisray.rop[i] = org[i] + 1e-4*dir[i];
260			/* compute and print */
261			(*ofun[Lamb.otype].funp)(&Lamb, &thisray);
262			oputv(&thisray);
263			if (outform == 'a')
264			putchar('\n');
265			}
266
267
268			getvec(vec, fmt, fp) /* get a vector from fp */
269			register FVECT vec;
270			int fmt;
271			FILE *fp;
272			{
273	greg	1.19	extern char *fgetword();
274	greg	1.1	static float vf[3];
275	greg	2.5	static double vd[3];
276	greg	1.19	char buf[32];
277			register int i;
278	greg	1.1
279			switch (fmt) {
280			case 'a': /* ascii */
281	greg	1.19	for (i = 0; i < 3; i++) {
282			if (fgetword(buf, sizeof(buf), fp) == NULL \|\|
283			!isflt(buf))
284			return(-1);
285			vec[i] = atof(buf);
286			}
287	greg	1.1	break;
288			case 'f': /* binary float */
289	greg	1.8	if (fread((char *)vf, sizeof(float), 3, fp) != 3)
290	greg	1.1	return(-1);
291			vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2];
292			break;
293			case 'd': /* binary double */
294	greg	2.5	if (fread((char *)vd, sizeof(double), 3, fp) != 3)
295	greg	1.1	return(-1);
296	greg	2.5	vec[0] = vd[0]; vec[1] = vd[1]; vec[2] = vd[2];
297	greg	1.1	break;
298	greg	2.6	default:
299			error(CONSISTENCY, "botched input format");
300	greg	1.1	}
301			return(0);
302			}
303
304
305			static
306			ourtrace(r) /* print ray values */
307			RAY *r;
308			{
309			register int (**tp)();
310
311			if (every_out[0] == NULL)
312			return;
313			tabin(r);
314			for (tp = every_out; *tp != NULL; tp++)
315			(**tp)(r);
316			putchar('\n');
317			}
318
319
320			static
321			tabin(r) /* tab in appropriate amount */
322			RAY *r;
323			{
324			register RAY *rp;
325
326			for (rp = r->parent; rp != NULL; rp = rp->parent)
327			putchar('\t');
328			}
329
330
331			static
332			oputo(r) /* print origin */
333			register RAY *r;
334			{
335			(*putreal)(r->rorg[0]);
336			(*putreal)(r->rorg[1]);
337			(*putreal)(r->rorg[2]);
338			}
339
340
341			static
342			oputd(r) /* print direction */
343			register RAY *r;
344			{
345			(*putreal)(r->rdir[0]);
346			(*putreal)(r->rdir[1]);
347			(*putreal)(r->rdir[2]);
348			}
349
350
351			static
352			oputv(r) /* print value */
353			register RAY *r;
354			{
355	greg	2.6	COLR cout;
356
357			if (outform == 'c') {
358			setcolr(cout, colval(r->rcol,RED),
359			colval(r->rcol,GRN),
360			colval(r->rcol,BLU));
361			fwrite((char *)cout, sizeof(cout), 1, stdout);
362			return;
363			}
364	greg	1.1	(*putreal)(colval(r->rcol,RED));
365			(*putreal)(colval(r->rcol,GRN));
366			(*putreal)(colval(r->rcol,BLU));
367			}
368
369
370			static
371	greg	2.5	oputl(r) /* print effective distance */
372	greg	1.1	register RAY *r;
373			{
374	greg	1.9	(*putreal)(r->rt);
375	greg	2.5	}
376
377
378			static
379			oputL(r) /* print single ray length */
380			register RAY *r;
381			{
382			(*putreal)(r->rot);
383	greg	1.1	}
384
385
386			static
387			oputp(r) /* print point */
388			register RAY *r;
389			{
390			if (r->rot < FHUGE) {
391			(*putreal)(r->rop[0]);
392			(*putreal)(r->rop[1]);
393			(*putreal)(r->rop[2]);
394			} else {
395			(*putreal)(0.0);
396			(*putreal)(0.0);
397			(*putreal)(0.0);
398			}
399			}
400
401
402			static
403			oputn(r) /* print normal */
404			register RAY *r;
405			{
406			if (r->rot < FHUGE) {
407			(*putreal)(r->ron[0]);
408			(*putreal)(r->ron[1]);
409			(*putreal)(r->ron[2]);
410			} else {
411			(*putreal)(0.0);
412			(*putreal)(0.0);
413			(*putreal)(0.0);
414			}
415			}
416
417
418			static
419			oputs(r) /* print name */
420			register RAY *r;
421			{
422			if (r->ro != NULL)
423			fputs(r->ro->oname, stdout);
424			else
425			putchar('*');
426			putchar('\t');
427			}
428
429
430			static
431			oputw(r) /* print weight */
432			register RAY *r;
433			{
434			(*putreal)(r->rweight);
435			}
436
437
438			static
439			oputm(r) /* print modifier */
440			register RAY *r;
441			{
442			if (r->ro != NULL)
443			fputs(objptr(r->ro->omod)->oname, stdout);
444			else
445			putchar('*');
446			putchar('\t');
447			}
448
449
450			static
451			puta(v) /* print ascii value */
452			double v;
453			{
454			printf("%e\t", v);
455			}
456
457
458			static
459			putd(v) /* print binary double */
460			double v;
461			{
462	greg	1.8	fwrite((char *)&v, sizeof(v), 1, stdout);
463	greg	1.1	}
464
465
466			static
467			putf(v) /* print binary float */
468			double v;
469			{
470			float f = v;
471
472	greg	1.8	fwrite((char *)&f, sizeof(f), 1, stdout);
473	greg	1.1	}