| 5 |
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* Compute rays corresponding to a given picture or view. |
| 6 |
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*/ |
| 7 |
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|
| 8 |
< |
|
| 8 |
> |
#include "platform.h" |
| 9 |
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#include "standard.h" |
| 10 |
< |
|
| 10 |
> |
#include "random.h" |
| 11 |
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#include "view.h" |
| 12 |
|
|
| 13 |
< |
extern int putf(), putd(), puta(); |
| 13 |
> |
typedef void putfunc(FVECT ro, FVECT rd); |
| 14 |
> |
static putfunc puta; |
| 15 |
> |
static putfunc putf; |
| 16 |
> |
static putfunc putd; |
| 17 |
> |
static void pix2rays(FILE *fp); |
| 18 |
> |
static void putrays(void); |
| 19 |
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|
| 20 |
< |
int (*putr)() = puta; |
| 20 |
> |
static putfunc *putr = puta; |
| 21 |
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|
| 22 |
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VIEW vw = STDVIEW; |
| 23 |
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|
| 25 |
|
|
| 26 |
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double pa = 1.; |
| 27 |
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|
| 28 |
+ |
double pj = 0.; |
| 29 |
+ |
|
| 30 |
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int zfd = -1; |
| 31 |
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|
| 32 |
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int fromstdin = 0; |
| 33 |
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|
| 34 |
+ |
int unbuffered = 0; |
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+ |
|
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+ |
int repeatcnt = 1; |
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+ |
|
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char *progname; |
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|
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|
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< |
main(argc, argv) |
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< |
int argc; |
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< |
char *argv[]; |
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> |
int |
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> |
main( |
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> |
int argc, |
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> |
char *argv[] |
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> |
) |
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{ |
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char *err; |
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int rval, getdim = 0; |
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< |
register int i; |
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> |
int i; |
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|
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progname = argv[0]; |
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if (argc < 2) |
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break; |
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case 'f': /* float */ |
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putr = putf; |
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+ |
SET_FILE_BINARY(stdout); |
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break; |
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case 'd': /* double */ |
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putr = putd; |
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+ |
SET_FILE_BINARY(stdout); |
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break; |
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default: |
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goto userr; |
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exit(1); |
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} |
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break; |
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< |
case 'p': /* pixel aspect ratio */ |
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< |
pa = atof(argv[++i]); |
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> |
case 'c': /* repeat count */ |
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> |
repeatcnt = atoi(argv[++i]); |
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break; |
| 111 |
+ |
case 'p': /* pixel aspect or jitter */ |
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+ |
if (argv[i][2] == 'a') |
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+ |
pa = atof(argv[++i]); |
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+ |
else if (argv[i][2] == 'j') |
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+ |
pj = atof(argv[++i]); |
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+ |
else |
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+ |
goto userr; |
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+ |
break; |
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case 'i': /* get pixels from stdin */ |
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fromstdin = 1; |
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break; |
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+ |
case 'u': /* unbuffered output */ |
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+ |
unbuffered = 1; |
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+ |
break; |
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default: |
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goto userr; |
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} |
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< |
if (i > argc | i+2 < argc) |
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> |
if ((i > argc) | (i+2 < argc)) |
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goto userr; |
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if (i < argc) { |
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rval = viewfile(argv[i], &vw, &rs); |
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exit(1); |
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} |
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if (i+1 < argc) { |
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< |
zfd = open(argv[i+1], O_RDONLY); |
| 138 |
< |
if (zfd < 0) { |
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< |
fprintf(stderr, |
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< |
"%s: cannot open depth buffer\n", |
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< |
argv[i+1]); |
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> |
zfd = open_float_depth(argv[i+1], (long)rs.xr*rs.yr); |
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> |
if (zfd < 0) |
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exit(1); |
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– |
} |
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} |
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} |
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if ((err = setview(&vw)) != NULL) { |
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exit(0); |
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userr: |
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fprintf(stderr, |
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< |
"Usage: %s [ -i -f{a|f|d} | -d ] { view opts .. | picture [zbuf] }\n", |
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> |
"Usage: %s [ -i -u -f{a|f|d} -c rept | -d ] { view opts .. | picture [zbuf] }\n", |
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progname); |
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exit(1); |
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} |
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|
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|
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< |
pix2rays(FILE *fp) |
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> |
static void |
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> |
jitterloc( |
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> |
RREAL loc[2] |
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> |
) |
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{ |
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+ |
if (pj > FTINY) { |
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+ |
loc[0] += pj*(.5 - frandom())/rs.xr; |
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+ |
loc[1] += pj*(.5 - frandom())/rs.yr; |
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+ |
} |
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+ |
} |
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+ |
|
| 177 |
+ |
|
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+ |
static void |
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+ |
pix2rays( |
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+ |
FILE *fp |
| 181 |
+ |
) |
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+ |
{ |
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static FVECT rorg, rdir; |
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float zval; |
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double px, py; |
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+ |
RREAL loc[2]; |
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int pp[2]; |
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double d; |
| 189 |
< |
register int i; |
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> |
int i; |
| 190 |
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|
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while (fscanf(fp, "%lf %lf", &px, &py) == 2) { |
| 192 |
< |
if (px < 0 || px >= rs.xr || |
| 193 |
< |
py < 0 || py >= rs.yr) { |
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< |
fprintf(stderr, |
| 157 |
< |
"%s: (x,y) pair (%.0f,%.0f) out of range\n", |
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< |
progname, px, py); |
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< |
exit(1); |
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< |
} |
| 192 |
> |
px += .5; py += .5; |
| 193 |
> |
loc[0] = px/rs.xr; loc[1] = py/rs.yr; |
| 194 |
|
if (zfd >= 0) { |
| 195 |
< |
loc2pix(pp, &rs, px/rs.xr, py/rs.yr); |
| 195 |
> |
if ((loc[0] < 0) | (loc[0] >= 1) | |
| 196 |
> |
(loc[1] < 0) | (loc[1] >= 1)) { |
| 197 |
> |
fprintf(stderr, "%s: input pixel outside image\n", |
| 198 |
> |
progname); |
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> |
exit(1); |
| 200 |
> |
} |
| 201 |
> |
loc2pix(pp, &rs, loc[0], loc[1]); |
| 202 |
|
if (lseek(zfd, |
| 203 |
< |
(pp[1]*scanlen(&rs)+pp[0])*sizeof(float), 0) |
| 204 |
< |
< 0 || |
| 203 |
> |
(pp[1]*scanlen(&rs)+pp[0])*sizeof(float), |
| 204 |
> |
SEEK_SET) < 0 || |
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|
read(zfd, &zval, sizeof(float)) |
| 206 |
< |
< sizeof(float)) { |
| 206 |
> |
< sizeof(float)) { |
| 207 |
|
fprintf(stderr, "%s: depth buffer read error\n", |
| 208 |
|
progname); |
| 209 |
|
exit(1); |
| 210 |
|
} |
| 211 |
|
} |
| 212 |
< |
d = viewray(rorg, rdir, &vw, px/rs.xr, py/rs.yr); |
| 212 |
> |
jitterloc(loc); |
| 213 |
> |
d = viewray(rorg, rdir, &vw, loc[0], loc[1]); |
| 214 |
|
if (d < -FTINY) |
| 215 |
|
rorg[0] = rorg[1] = rorg[2] = |
| 216 |
|
rdir[0] = rdir[1] = rdir[2] = 0.; |
| 223 |
|
rdir[0] *= d; rdir[1] *= d; rdir[2] *= d; |
| 224 |
|
} |
| 225 |
|
(*putr)(rorg, rdir); |
| 226 |
+ |
if (unbuffered) |
| 227 |
+ |
fflush(stdout); |
| 228 |
|
} |
| 229 |
|
if (!feof(fp)) { |
| 230 |
|
fprintf(stderr, "%s: expected px py on input\n", progname); |
| 233 |
|
} |
| 234 |
|
|
| 235 |
|
|
| 236 |
< |
putrays() |
| 236 |
> |
static void |
| 237 |
> |
putrays(void) |
| 238 |
|
{ |
| 239 |
< |
static FLOAT loc[2]; |
| 240 |
< |
static FVECT rorg, rdir; |
| 241 |
< |
float *zbuf; |
| 239 |
> |
RREAL loc[2]; |
| 240 |
> |
FVECT rorg, rdir; |
| 241 |
> |
float *zbuf = NULL; |
| 242 |
|
int sc; |
| 243 |
|
double d; |
| 244 |
< |
register int si, i; |
| 244 |
> |
int si, i, c; |
| 245 |
|
|
| 246 |
|
if (zfd >= 0) { |
| 247 |
|
zbuf = (float *)malloc(scanlen(&rs)*sizeof(float)); |
| 260 |
|
} |
| 261 |
|
} |
| 262 |
|
for (si = 0; si < scanlen(&rs); si++) { |
| 263 |
+ |
for (c = repeatcnt; c-- > 0; ) { |
| 264 |
|
pix2loc(loc, &rs, si, sc); |
| 265 |
+ |
jitterloc(loc); |
| 266 |
|
d = viewray(rorg, rdir, &vw, loc[0], loc[1]); |
| 267 |
|
if (d < -FTINY) |
| 268 |
|
rorg[0] = rorg[1] = rorg[2] = |
| 276 |
|
rdir[0] *= d; rdir[1] *= d; rdir[2] *= d; |
| 277 |
|
} |
| 278 |
|
(*putr)(rorg, rdir); |
| 279 |
+ |
} |
| 280 |
|
} |
| 281 |
|
} |
| 282 |
|
if (zfd >= 0) |
| 284 |
|
} |
| 285 |
|
|
| 286 |
|
|
| 287 |
< |
puta(ro, rd) /* put out ray in ASCII format */ |
| 288 |
< |
FVECT ro, rd; |
| 287 |
> |
static void |
| 288 |
> |
puta( /* put out ray in ASCII format */ |
| 289 |
> |
FVECT ro, |
| 290 |
> |
FVECT rd |
| 291 |
> |
) |
| 292 |
|
{ |
| 293 |
|
printf("%.5e %.5e %.5e %.5e %.5e %.5e\n", |
| 294 |
|
ro[0], ro[1], ro[2], |
| 296 |
|
} |
| 297 |
|
|
| 298 |
|
|
| 299 |
< |
putf(ro, rd) /* put out ray in float format */ |
| 300 |
< |
FVECT ro, rd; |
| 299 |
> |
static void |
| 300 |
> |
putf( /* put out ray in float format */ |
| 301 |
> |
FVECT ro, |
| 302 |
> |
FVECT rd |
| 303 |
> |
) |
| 304 |
|
{ |
| 305 |
|
float v[6]; |
| 306 |
|
|
| 307 |
|
v[0] = ro[0]; v[1] = ro[1]; v[2] = ro[2]; |
| 308 |
|
v[3] = rd[0]; v[4] = rd[1]; v[5] = rd[2]; |
| 309 |
< |
fwrite(v, sizeof(float), 6, stdout); |
| 309 |
> |
putbinary(v, sizeof(float), 6, stdout); |
| 310 |
|
} |
| 311 |
|
|
| 312 |
|
|
| 313 |
< |
putd(ro, rd) /* put out ray in double format */ |
| 314 |
< |
FVECT ro, rd; |
| 313 |
> |
static void |
| 314 |
> |
putd( /* put out ray in double format */ |
| 315 |
> |
FVECT ro, |
| 316 |
> |
FVECT rd |
| 317 |
> |
) |
| 318 |
|
{ |
| 319 |
|
double v[6]; |
| 320 |
|
|
| 321 |
|
v[0] = ro[0]; v[1] = ro[1]; v[2] = ro[2]; |
| 322 |
|
v[3] = rd[0]; v[4] = rd[1]; v[5] = rd[2]; |
| 323 |
< |
fwrite(v, sizeof(double), 6, stdout); |
| 323 |
> |
putbinary(v, sizeof(double), 6, stdout); |
| 324 |
|
} |