| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rtrace.c,v 2.62 2009/12/14 07:31:37 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rtrace.c - program and variables for individual ray tracing. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
/* |
| 11 |
* Input is in the form: |
| 12 |
* |
| 13 |
* xorg yorg zorg xdir ydir zdir |
| 14 |
* |
| 15 |
* The direction need not be normalized. Output is flexible. |
| 16 |
* If the direction vector is (0,0,0), then the output is flushed. |
| 17 |
* All values default to ascii representation of real |
| 18 |
* numbers. Binary representations can be selected |
| 19 |
* with '-ff' for float or '-fd' for double. By default, |
| 20 |
* radiance is computed. The '-i' or '-I' options indicate that |
| 21 |
* irradiance values are desired. |
| 22 |
*/ |
| 23 |
|
| 24 |
#include <time.h> |
| 25 |
|
| 26 |
#include "platform.h" |
| 27 |
#include "ray.h" |
| 28 |
#include "ambient.h" |
| 29 |
#include "source.h" |
| 30 |
#include "otypes.h" |
| 31 |
#include "resolu.h" |
| 32 |
#include "random.h" |
| 33 |
|
| 34 |
extern int inform; /* input format */ |
| 35 |
extern int outform; /* output format */ |
| 36 |
extern char *outvals; /* output values */ |
| 37 |
|
| 38 |
extern int imm_irrad; /* compute immediate irradiance? */ |
| 39 |
extern int lim_dist; /* limit distance? */ |
| 40 |
|
| 41 |
extern char *tralist[]; /* list of modifers to trace (or no) */ |
| 42 |
extern int traincl; /* include == 1, exclude == 0 */ |
| 43 |
|
| 44 |
extern int hresolu; /* horizontal resolution */ |
| 45 |
extern int vresolu; /* vertical resolution */ |
| 46 |
|
| 47 |
static int castonly = 0; |
| 48 |
|
| 49 |
#ifndef MAXTSET |
| 50 |
#define MAXTSET 8191 /* maximum number in trace set */ |
| 51 |
#endif |
| 52 |
OBJECT traset[MAXTSET+1]={0}; /* trace include/exclude set */ |
| 53 |
|
| 54 |
static RAY thisray; /* for our convenience */ |
| 55 |
|
| 56 |
typedef void putf_t(double v); |
| 57 |
static putf_t puta, putd, putf; |
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|
| 59 |
typedef void oputf_t(RAY *r); |
| 60 |
static oputf_t oputo, oputd, oputv, oputV, oputl, oputL, oputc, oputp, |
| 61 |
oputn, oputN, oputs, oputw, oputW, oputm, oputM, oputtilde; |
| 62 |
|
| 63 |
static void setoutput(char *vs); |
| 64 |
extern void tranotify(OBJECT obj); |
| 65 |
static void bogusray(void); |
| 66 |
static void raycast(RAY *r); |
| 67 |
static void rayirrad(RAY *r); |
| 68 |
static void rtcompute(FVECT org, FVECT dir, double dmax); |
| 69 |
static int printvals(RAY *r); |
| 70 |
static int getvec(FVECT vec, int fmt, FILE *fp); |
| 71 |
static void tabin(RAY *r); |
| 72 |
static void ourtrace(RAY *r); |
| 73 |
|
| 74 |
static oputf_t *ray_out[16], *every_out[16]; |
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static putf_t *putreal; |
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|
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|
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void |
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quit( /* quit program */ |
| 80 |
int code |
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) |
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{ |
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if (ray_pnprocs > 0) /* close children if any */ |
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ray_pclose(0); |
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#ifndef NON_POSIX |
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else if (!ray_pnprocs) { |
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headclean(); /* delete header file */ |
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pfclean(); /* clean up persist files */ |
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} |
| 90 |
#endif |
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exit(code); |
| 92 |
} |
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|
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|
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char * |
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formstr( /* return format identifier */ |
| 97 |
int f |
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) |
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{ |
| 100 |
switch (f) { |
| 101 |
case 'a': return("ascii"); |
| 102 |
case 'f': return("float"); |
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case 'd': return("double"); |
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case 'c': return(COLRFMT); |
| 105 |
} |
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return("unknown"); |
| 107 |
} |
| 108 |
|
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|
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extern void |
| 111 |
rtrace( /* trace rays from file */ |
| 112 |
char *fname, |
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int nproc |
| 114 |
) |
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{ |
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unsigned long vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu |
| 117 |
: vresolu; |
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long nextflush = hresolu; |
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FILE *fp; |
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double d; |
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FVECT orig, direc; |
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/* set up input */ |
| 123 |
if (fname == NULL) |
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fp = stdin; |
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else if ((fp = fopen(fname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open input file \"%s\"", fname); |
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error(SYSTEM, errmsg); |
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} |
| 129 |
if (inform != 'a') |
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SET_FILE_BINARY(fp); |
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/* set up output */ |
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setoutput(outvals); |
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if (imm_irrad) |
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castonly = 0; |
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else if (castonly) |
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nproc = 1; /* don't bother multiprocessing */ |
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switch (outform) { |
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case 'a': putreal = puta; break; |
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case 'f': putreal = putf; break; |
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case 'd': putreal = putd; break; |
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case 'c': |
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if (strcmp(outvals, "v")) |
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error(USER, "color format with value output only"); |
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break; |
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default: |
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error(CONSISTENCY, "botched output format"); |
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} |
| 148 |
if (nproc > 1) { /* start multiprocessing */ |
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ray_popen(nproc); |
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ray_fifo_out = printvals; |
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} |
| 152 |
if (hresolu > 0) { |
| 153 |
if (vresolu > 0) |
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fprtresolu(hresolu, vresolu, stdout); |
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fflush(stdout); |
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} |
| 157 |
/* process file */ |
| 158 |
while (getvec(orig, inform, fp) == 0 && |
| 159 |
getvec(direc, inform, fp) == 0) { |
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|
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d = normalize(direc); |
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if (d == 0.0) { /* zero ==> flush */ |
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if (--nextflush <= 0 || !vcount) { |
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if (nproc > 1 && ray_fifo_flush() < 0) |
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error(USER, "lost children"); |
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bogusray(); |
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fflush(stdout); |
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nextflush = hresolu; |
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} else |
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bogusray(); |
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} else { /* compute and print */ |
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rtcompute(orig, direc, lim_dist ? d : 0.0); |
| 173 |
/* flush if time */ |
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if (!--nextflush) { |
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if (nproc > 1 && ray_fifo_flush() < 0) |
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error(USER, "lost children"); |
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fflush(stdout); |
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nextflush = hresolu; |
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} |
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} |
| 181 |
if (ferror(stdout)) |
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error(SYSTEM, "write error"); |
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if (vcount && !--vcount) /* check for end */ |
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break; |
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} |
| 186 |
if (nproc > 1) { /* clean up children */ |
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if (ray_fifo_flush() < 0) |
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error(USER, "unable to complete processing"); |
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ray_pclose(0); |
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} |
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if (fflush(stdout) < 0) |
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error(SYSTEM, "write error"); |
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if (vcount) |
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error(USER, "unexpected EOF on input"); |
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if (fname != NULL) |
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fclose(fp); |
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} |
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|
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|
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static void |
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trace_sources(void) /* trace rays to light sources, also */ |
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{ |
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int sn; |
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|
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for (sn = 0; sn < nsources; sn++) |
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source[sn].sflags |= SFOLLOW; |
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} |
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|
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|
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static void |
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setoutput( /* set up output tables */ |
| 212 |
char *vs |
| 213 |
) |
| 214 |
{ |
| 215 |
oputf_t **table = ray_out; |
| 216 |
|
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castonly = 1; |
| 218 |
while (*vs) |
| 219 |
switch (*vs++) { |
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case 'T': /* trace sources */ |
| 221 |
if (!*vs) break; |
| 222 |
trace_sources(); |
| 223 |
/* fall through */ |
| 224 |
case 't': /* trace */ |
| 225 |
if (!*vs) break; |
| 226 |
*table = NULL; |
| 227 |
table = every_out; |
| 228 |
trace = ourtrace; |
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castonly = 0; |
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break; |
| 231 |
case 'o': /* origin */ |
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*table++ = oputo; |
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break; |
| 234 |
case 'd': /* direction */ |
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*table++ = oputd; |
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break; |
| 237 |
case 'v': /* value */ |
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*table++ = oputv; |
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castonly = 0; |
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break; |
| 241 |
case 'V': /* contribution */ |
| 242 |
*table++ = oputV; |
| 243 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
| 244 |
error(WARNING, |
| 245 |
"-otV accuracy depends on -aa 0 -as 0"); |
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break; |
| 247 |
case 'l': /* effective distance */ |
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*table++ = oputl; |
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castonly = 0; |
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break; |
| 251 |
case 'c': /* local coordinates */ |
| 252 |
*table++ = oputc; |
| 253 |
break; |
| 254 |
case 'L': /* single ray length */ |
| 255 |
*table++ = oputL; |
| 256 |
break; |
| 257 |
case 'p': /* point */ |
| 258 |
*table++ = oputp; |
| 259 |
break; |
| 260 |
case 'n': /* perturbed normal */ |
| 261 |
*table++ = oputn; |
| 262 |
castonly = 0; |
| 263 |
break; |
| 264 |
case 'N': /* unperturbed normal */ |
| 265 |
*table++ = oputN; |
| 266 |
break; |
| 267 |
case 's': /* surface */ |
| 268 |
*table++ = oputs; |
| 269 |
break; |
| 270 |
case 'w': /* weight */ |
| 271 |
*table++ = oputw; |
| 272 |
break; |
| 273 |
case 'W': /* coefficient */ |
| 274 |
*table++ = oputW; |
| 275 |
if (ambounce > 0 && (ambacc > FTINY || ambssamp > 0)) |
| 276 |
error(WARNING, |
| 277 |
"-otW accuracy depends on -aa 0 -as 0"); |
| 278 |
break; |
| 279 |
case 'm': /* modifier */ |
| 280 |
*table++ = oputm; |
| 281 |
break; |
| 282 |
case 'M': /* material */ |
| 283 |
*table++ = oputM; |
| 284 |
break; |
| 285 |
case '~': /* tilde */ |
| 286 |
*table++ = oputtilde; |
| 287 |
break; |
| 288 |
} |
| 289 |
*table = NULL; |
| 290 |
} |
| 291 |
|
| 292 |
|
| 293 |
static void |
| 294 |
bogusray(void) /* print out empty record */ |
| 295 |
{ |
| 296 |
thisray.rorg[0] = thisray.rorg[1] = thisray.rorg[2] = |
| 297 |
thisray.rdir[0] = thisray.rdir[1] = thisray.rdir[2] = 0.0; |
| 298 |
thisray.rmax = 0.0; |
| 299 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 300 |
printvals(&thisray); |
| 301 |
} |
| 302 |
|
| 303 |
|
| 304 |
static void |
| 305 |
raycast( /* compute first ray intersection only */ |
| 306 |
RAY *r |
| 307 |
) |
| 308 |
{ |
| 309 |
if (!localhit(r, &thescene)) { |
| 310 |
if (r->ro == &Aftplane) { /* clipped */ |
| 311 |
r->ro = NULL; |
| 312 |
r->rot = FHUGE; |
| 313 |
} else |
| 314 |
sourcehit(r); |
| 315 |
} |
| 316 |
} |
| 317 |
|
| 318 |
|
| 319 |
static void |
| 320 |
rayirrad( /* compute irradiance rather than radiance */ |
| 321 |
RAY *r |
| 322 |
) |
| 323 |
{ |
| 324 |
void (*old_revf)(RAY *) = r->revf; |
| 325 |
|
| 326 |
r->rot = 1e-5; /* pretend we hit surface */ |
| 327 |
VSUM(r->rop, r->rorg, r->rdir, r->rot); |
| 328 |
r->ron[0] = -r->rdir[0]; |
| 329 |
r->ron[1] = -r->rdir[1]; |
| 330 |
r->ron[2] = -r->rdir[2]; |
| 331 |
r->rod = 1.0; |
| 332 |
/* compute result */ |
| 333 |
r->revf = raytrace; |
| 334 |
(*ofun[Lamb.otype].funp)(&Lamb, r); |
| 335 |
r->revf = old_revf; |
| 336 |
} |
| 337 |
|
| 338 |
|
| 339 |
static void |
| 340 |
rtcompute( /* compute and print ray value(s) */ |
| 341 |
FVECT org, |
| 342 |
FVECT dir, |
| 343 |
double dmax |
| 344 |
) |
| 345 |
{ |
| 346 |
/* set up ray */ |
| 347 |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 348 |
if (imm_irrad) { |
| 349 |
VSUM(thisray.rorg, org, dir, 1.1e-4); |
| 350 |
thisray.rdir[0] = -dir[0]; |
| 351 |
thisray.rdir[1] = -dir[1]; |
| 352 |
thisray.rdir[2] = -dir[2]; |
| 353 |
thisray.rmax = 0.0; |
| 354 |
thisray.revf = rayirrad; |
| 355 |
} else { |
| 356 |
VCOPY(thisray.rorg, org); |
| 357 |
VCOPY(thisray.rdir, dir); |
| 358 |
thisray.rmax = dmax; |
| 359 |
if (castonly) |
| 360 |
thisray.revf = raycast; |
| 361 |
} |
| 362 |
if (ray_pnprocs > 1) { /* multiprocessing FIFO? */ |
| 363 |
if (ray_fifo_in(&thisray) < 0) |
| 364 |
error(USER, "lost children"); |
| 365 |
return; |
| 366 |
} |
| 367 |
samplendx++; /* else do it ourselves */ |
| 368 |
rayvalue(&thisray); |
| 369 |
printvals(&thisray); |
| 370 |
} |
| 371 |
|
| 372 |
|
| 373 |
static int |
| 374 |
printvals( /* print requested ray values */ |
| 375 |
RAY *r |
| 376 |
) |
| 377 |
{ |
| 378 |
oputf_t **tp; |
| 379 |
|
| 380 |
if (ray_out[0] == NULL) |
| 381 |
return(0); |
| 382 |
for (tp = ray_out; *tp != NULL; tp++) |
| 383 |
(**tp)(r); |
| 384 |
if (outform == 'a') |
| 385 |
putchar('\n'); |
| 386 |
return(1); |
| 387 |
} |
| 388 |
|
| 389 |
|
| 390 |
static int |
| 391 |
getvec( /* get a vector from fp */ |
| 392 |
FVECT vec, |
| 393 |
int fmt, |
| 394 |
FILE *fp |
| 395 |
) |
| 396 |
{ |
| 397 |
static float vf[3]; |
| 398 |
static double vd[3]; |
| 399 |
char buf[32]; |
| 400 |
int i; |
| 401 |
|
| 402 |
switch (fmt) { |
| 403 |
case 'a': /* ascii */ |
| 404 |
for (i = 0; i < 3; i++) { |
| 405 |
if (fgetword(buf, sizeof(buf), fp) == NULL || |
| 406 |
!isflt(buf)) |
| 407 |
return(-1); |
| 408 |
vec[i] = atof(buf); |
| 409 |
} |
| 410 |
break; |
| 411 |
case 'f': /* binary float */ |
| 412 |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
| 413 |
return(-1); |
| 414 |
VCOPY(vec, vf); |
| 415 |
break; |
| 416 |
case 'd': /* binary double */ |
| 417 |
if (fread((char *)vd, sizeof(double), 3, fp) != 3) |
| 418 |
return(-1); |
| 419 |
VCOPY(vec, vd); |
| 420 |
break; |
| 421 |
default: |
| 422 |
error(CONSISTENCY, "botched input format"); |
| 423 |
} |
| 424 |
return(0); |
| 425 |
} |
| 426 |
|
| 427 |
|
| 428 |
void |
| 429 |
tranotify( /* record new modifier */ |
| 430 |
OBJECT obj |
| 431 |
) |
| 432 |
{ |
| 433 |
static int hitlimit = 0; |
| 434 |
OBJREC *o = objptr(obj); |
| 435 |
char **tralp; |
| 436 |
|
| 437 |
if (obj == OVOID) { /* starting over */ |
| 438 |
traset[0] = 0; |
| 439 |
hitlimit = 0; |
| 440 |
return; |
| 441 |
} |
| 442 |
if (hitlimit || !ismodifier(o->otype)) |
| 443 |
return; |
| 444 |
for (tralp = tralist; *tralp != NULL; tralp++) |
| 445 |
if (!strcmp(o->oname, *tralp)) { |
| 446 |
if (traset[0] >= MAXTSET) { |
| 447 |
error(WARNING, "too many modifiers in trace list"); |
| 448 |
hitlimit++; |
| 449 |
return; /* should this be fatal? */ |
| 450 |
} |
| 451 |
insertelem(traset, obj); |
| 452 |
return; |
| 453 |
} |
| 454 |
} |
| 455 |
|
| 456 |
|
| 457 |
static void |
| 458 |
ourtrace( /* print ray values */ |
| 459 |
RAY *r |
| 460 |
) |
| 461 |
{ |
| 462 |
oputf_t **tp; |
| 463 |
|
| 464 |
if (every_out[0] == NULL) |
| 465 |
return; |
| 466 |
if (r->ro == NULL) { |
| 467 |
if (traincl == 1) |
| 468 |
return; |
| 469 |
} else if (traincl != -1 && traincl != inset(traset, r->ro->omod)) |
| 470 |
return; |
| 471 |
tabin(r); |
| 472 |
for (tp = every_out; *tp != NULL; tp++) |
| 473 |
(**tp)(r); |
| 474 |
if (outform == 'a') |
| 475 |
putchar('\n'); |
| 476 |
} |
| 477 |
|
| 478 |
|
| 479 |
static void |
| 480 |
tabin( /* tab in appropriate amount */ |
| 481 |
RAY *r |
| 482 |
) |
| 483 |
{ |
| 484 |
const RAY *rp; |
| 485 |
|
| 486 |
for (rp = r->parent; rp != NULL; rp = rp->parent) |
| 487 |
putchar('\t'); |
| 488 |
} |
| 489 |
|
| 490 |
|
| 491 |
static void |
| 492 |
oputo( /* print origin */ |
| 493 |
RAY *r |
| 494 |
) |
| 495 |
{ |
| 496 |
(*putreal)(r->rorg[0]); |
| 497 |
(*putreal)(r->rorg[1]); |
| 498 |
(*putreal)(r->rorg[2]); |
| 499 |
} |
| 500 |
|
| 501 |
|
| 502 |
static void |
| 503 |
oputd( /* print direction */ |
| 504 |
RAY *r |
| 505 |
) |
| 506 |
{ |
| 507 |
(*putreal)(r->rdir[0]); |
| 508 |
(*putreal)(r->rdir[1]); |
| 509 |
(*putreal)(r->rdir[2]); |
| 510 |
} |
| 511 |
|
| 512 |
|
| 513 |
static void |
| 514 |
oputv( /* print value */ |
| 515 |
RAY *r |
| 516 |
) |
| 517 |
{ |
| 518 |
if (outform == 'c') { |
| 519 |
COLR cout; |
| 520 |
setcolr(cout, colval(r->rcol,RED), |
| 521 |
colval(r->rcol,GRN), |
| 522 |
colval(r->rcol,BLU)); |
| 523 |
fwrite((char *)cout, sizeof(cout), 1, stdout); |
| 524 |
return; |
| 525 |
} |
| 526 |
(*putreal)(colval(r->rcol,RED)); |
| 527 |
(*putreal)(colval(r->rcol,GRN)); |
| 528 |
(*putreal)(colval(r->rcol,BLU)); |
| 529 |
} |
| 530 |
|
| 531 |
|
| 532 |
static void |
| 533 |
oputV( /* print value contribution */ |
| 534 |
RAY *r |
| 535 |
) |
| 536 |
{ |
| 537 |
double contr[3]; |
| 538 |
|
| 539 |
raycontrib(contr, r, PRIMARY); |
| 540 |
multcolor(contr, r->rcol); |
| 541 |
(*putreal)(contr[RED]); |
| 542 |
(*putreal)(contr[GRN]); |
| 543 |
(*putreal)(contr[BLU]); |
| 544 |
} |
| 545 |
|
| 546 |
|
| 547 |
static void |
| 548 |
oputl( /* print effective distance */ |
| 549 |
RAY *r |
| 550 |
) |
| 551 |
{ |
| 552 |
(*putreal)(r->rt); |
| 553 |
} |
| 554 |
|
| 555 |
|
| 556 |
static void |
| 557 |
oputL( /* print single ray length */ |
| 558 |
RAY *r |
| 559 |
) |
| 560 |
{ |
| 561 |
(*putreal)(r->rot); |
| 562 |
} |
| 563 |
|
| 564 |
|
| 565 |
static void |
| 566 |
oputc( /* print local coordinates */ |
| 567 |
RAY *r |
| 568 |
) |
| 569 |
{ |
| 570 |
(*putreal)(r->uv[0]); |
| 571 |
(*putreal)(r->uv[1]); |
| 572 |
} |
| 573 |
|
| 574 |
|
| 575 |
static void |
| 576 |
oputp( /* print point */ |
| 577 |
RAY *r |
| 578 |
) |
| 579 |
{ |
| 580 |
if (r->rot < FHUGE) { |
| 581 |
(*putreal)(r->rop[0]); |
| 582 |
(*putreal)(r->rop[1]); |
| 583 |
(*putreal)(r->rop[2]); |
| 584 |
} else { |
| 585 |
(*putreal)(0.0); |
| 586 |
(*putreal)(0.0); |
| 587 |
(*putreal)(0.0); |
| 588 |
} |
| 589 |
} |
| 590 |
|
| 591 |
|
| 592 |
static void |
| 593 |
oputN( /* print unperturbed normal */ |
| 594 |
RAY *r |
| 595 |
) |
| 596 |
{ |
| 597 |
if (r->rot < FHUGE) { |
| 598 |
(*putreal)(r->ron[0]); |
| 599 |
(*putreal)(r->ron[1]); |
| 600 |
(*putreal)(r->ron[2]); |
| 601 |
} else { |
| 602 |
(*putreal)(0.0); |
| 603 |
(*putreal)(0.0); |
| 604 |
(*putreal)(0.0); |
| 605 |
} |
| 606 |
} |
| 607 |
|
| 608 |
|
| 609 |
static void |
| 610 |
oputn( /* print perturbed normal */ |
| 611 |
RAY *r |
| 612 |
) |
| 613 |
{ |
| 614 |
FVECT pnorm; |
| 615 |
|
| 616 |
if (r->rot >= FHUGE) { |
| 617 |
(*putreal)(0.0); |
| 618 |
(*putreal)(0.0); |
| 619 |
(*putreal)(0.0); |
| 620 |
return; |
| 621 |
} |
| 622 |
raynormal(pnorm, r); |
| 623 |
(*putreal)(pnorm[0]); |
| 624 |
(*putreal)(pnorm[1]); |
| 625 |
(*putreal)(pnorm[2]); |
| 626 |
} |
| 627 |
|
| 628 |
|
| 629 |
static void |
| 630 |
oputs( /* print name */ |
| 631 |
RAY *r |
| 632 |
) |
| 633 |
{ |
| 634 |
if (r->ro != NULL) |
| 635 |
fputs(r->ro->oname, stdout); |
| 636 |
else |
| 637 |
putchar('*'); |
| 638 |
putchar('\t'); |
| 639 |
} |
| 640 |
|
| 641 |
|
| 642 |
static void |
| 643 |
oputw( /* print weight */ |
| 644 |
RAY *r |
| 645 |
) |
| 646 |
{ |
| 647 |
(*putreal)(r->rweight); |
| 648 |
} |
| 649 |
|
| 650 |
|
| 651 |
static void |
| 652 |
oputW( /* print coefficient */ |
| 653 |
RAY *r |
| 654 |
) |
| 655 |
{ |
| 656 |
double contr[3]; |
| 657 |
|
| 658 |
raycontrib(contr, r, PRIMARY); |
| 659 |
(*putreal)(contr[RED]); |
| 660 |
(*putreal)(contr[GRN]); |
| 661 |
(*putreal)(contr[BLU]); |
| 662 |
} |
| 663 |
|
| 664 |
|
| 665 |
static void |
| 666 |
oputm( /* print modifier */ |
| 667 |
RAY *r |
| 668 |
) |
| 669 |
{ |
| 670 |
if (r->ro != NULL) |
| 671 |
if (r->ro->omod != OVOID) |
| 672 |
fputs(objptr(r->ro->omod)->oname, stdout); |
| 673 |
else |
| 674 |
fputs(VOIDID, stdout); |
| 675 |
else |
| 676 |
putchar('*'); |
| 677 |
putchar('\t'); |
| 678 |
} |
| 679 |
|
| 680 |
|
| 681 |
static void |
| 682 |
oputM( /* print material */ |
| 683 |
RAY *r |
| 684 |
) |
| 685 |
{ |
| 686 |
OBJREC *mat; |
| 687 |
|
| 688 |
if (r->ro != NULL) { |
| 689 |
if ((mat = findmaterial(r->ro)) != NULL) |
| 690 |
fputs(mat->oname, stdout); |
| 691 |
else |
| 692 |
fputs(VOIDID, stdout); |
| 693 |
} else |
| 694 |
putchar('*'); |
| 695 |
putchar('\t'); |
| 696 |
} |
| 697 |
|
| 698 |
|
| 699 |
static void |
| 700 |
oputtilde( /* output tilde (spacer) */ |
| 701 |
RAY *r |
| 702 |
) |
| 703 |
{ |
| 704 |
fputs("~\t", stdout); |
| 705 |
} |
| 706 |
|
| 707 |
|
| 708 |
static void |
| 709 |
puta( /* print ascii value */ |
| 710 |
double v |
| 711 |
) |
| 712 |
{ |
| 713 |
printf("%e\t", v); |
| 714 |
} |
| 715 |
|
| 716 |
|
| 717 |
static void |
| 718 |
putd(v) /* print binary double */ |
| 719 |
double v; |
| 720 |
{ |
| 721 |
fwrite((char *)&v, sizeof(v), 1, stdout); |
| 722 |
} |
| 723 |
|
| 724 |
|
| 725 |
static void |
| 726 |
putf(v) /* print binary float */ |
| 727 |
double v; |
| 728 |
{ |
| 729 |
float f = v; |
| 730 |
|
| 731 |
fwrite((char *)&f, sizeof(f), 1, stdout); |
| 732 |
} |
