| 12 |
|
#include <signal.h> |
| 13 |
|
#include <ctype.h> |
| 14 |
|
|
| 15 |
– |
#include "platform.h" |
| 15 |
|
#include "ray.h" |
| 16 |
|
#include "rpaint.h" |
| 17 |
|
|
| 19 |
– |
|
| 20 |
– |
CUBE thescene; /* our scene */ |
| 21 |
– |
OBJECT nsceneobjs; /* number of objects in our scene */ |
| 22 |
– |
|
| 23 |
– |
int dimlist[MAXDIM]; /* sampling dimensions */ |
| 24 |
– |
int ndims = 0; /* number of sampling dimensions */ |
| 25 |
– |
int samplendx = 0; /* index for this sample */ |
| 26 |
– |
|
| 27 |
– |
extern void ambnotify(); |
| 28 |
– |
void (*addobjnotify[])() = {ambnotify, NULL}; |
| 29 |
– |
|
| 30 |
– |
VIEW ourview = STDVIEW; /* viewing parameters */ |
| 31 |
– |
int hresolu, vresolu; /* image resolution */ |
| 32 |
– |
|
| 33 |
– |
void (*trace)() = NULL; /* trace call */ |
| 34 |
– |
|
| 35 |
– |
int do_irrad = 0; /* compute irradiance? */ |
| 36 |
– |
|
| 37 |
– |
int psample = 8; /* pixel sample size */ |
| 38 |
– |
double maxdiff = .15; /* max. sample difference */ |
| 39 |
– |
|
| 40 |
– |
double exposure = 1.0; /* exposure for scene */ |
| 41 |
– |
|
| 42 |
– |
double dstrsrc = 0.0; /* square source distribution */ |
| 43 |
– |
double shadthresh = .1; /* shadow threshold */ |
| 44 |
– |
double shadcert = .25; /* shadow certainty */ |
| 45 |
– |
int directrelay = 0; /* number of source relays */ |
| 46 |
– |
int vspretest = 128; /* virtual source pretest density */ |
| 47 |
– |
int directvis = 1; /* sources visible? */ |
| 48 |
– |
double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
| 49 |
– |
|
| 50 |
– |
COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
| 51 |
– |
COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
| 52 |
– |
double seccg = 0.; /* global scattering eccentricity */ |
| 53 |
– |
double ssampdist = 0.; /* scatter sampling distance */ |
| 54 |
– |
|
| 55 |
– |
double specthresh = .3; /* specular sampling threshold */ |
| 56 |
– |
double specjitter = 1.; /* specular sampling jitter */ |
| 57 |
– |
|
| 58 |
– |
int backvis = 1; /* back face visibility */ |
| 59 |
– |
|
| 60 |
– |
int maxdepth = 4; /* maximum recursion depth */ |
| 61 |
– |
double minweight = 1e-2; /* minimum ray weight */ |
| 62 |
– |
|
| 63 |
– |
char *ambfile = NULL; /* ambient file name */ |
| 64 |
– |
COLOR ambval = BLKCOLOR; /* ambient value */ |
| 65 |
– |
int ambvwt = 0; /* initial weight for ambient value */ |
| 66 |
– |
double ambacc = 0.2; /* ambient accuracy */ |
| 67 |
– |
int ambres = 8; /* ambient resolution */ |
| 68 |
– |
int ambdiv = 32; /* ambient divisions */ |
| 69 |
– |
int ambssamp = 0; /* ambient super-samples */ |
| 70 |
– |
int ambounce = 0; /* ambient bounces */ |
| 71 |
– |
char *amblist[128]; /* ambient include/exclude list */ |
| 72 |
– |
int ambincl = -1; /* include == 1, exclude == 0 */ |
| 73 |
– |
|
| 74 |
– |
int greyscale = 0; /* map colors to brightness? */ |
| 75 |
– |
char *dvcname = dev_default; /* output device name */ |
| 76 |
– |
|
| 77 |
– |
struct driver *dev = NULL; /* driver functions */ |
| 78 |
– |
|
| 79 |
– |
char rifname[128]; /* rad input file name */ |
| 80 |
– |
|
| 81 |
– |
VIEW oldview; /* previous view parameters */ |
| 82 |
– |
|
| 83 |
– |
PNODE ptrunk; /* the base of our image */ |
| 84 |
– |
RECT pframe; /* current frame boundaries */ |
| 85 |
– |
int pdepth; /* image depth in current frame */ |
| 86 |
– |
|
| 87 |
– |
static char *reserve_mem = NULL; /* pre-allocated reserve memory */ |
| 88 |
– |
|
| 89 |
– |
#define RESERVE_AMT 32768 /* amount of memory to reserve */ |
| 90 |
– |
|
| 18 |
|
#define CTRL(c) ((c)-'@') |
| 19 |
|
|
| 20 |
|
|
| 26 |
|
if (code == 2 && errno == ENOMEM) |
| 27 |
|
printmemstats(stderr); |
| 28 |
|
#endif |
| 29 |
+ |
if (ray_pnprocs > 0) /* close children if any */ |
| 30 |
+ |
ray_pclose(0); |
| 31 |
|
devclose(); |
| 32 |
|
exit(code); |
| 33 |
|
} |
| 34 |
|
|
| 35 |
|
|
| 36 |
|
void |
| 37 |
< |
devopen(dname) /* open device driver */ |
| 38 |
< |
char *dname; |
| 37 |
> |
devopen( /* open device driver */ |
| 38 |
> |
char *dname |
| 39 |
> |
) |
| 40 |
|
{ |
| 41 |
|
extern char *progname, *octname; |
| 42 |
|
char *id; |
| 43 |
< |
register int i; |
| 43 |
> |
int i; |
| 44 |
|
|
| 45 |
|
id = octname!=NULL ? octname : progname; |
| 46 |
|
/* check device table */ |
| 47 |
|
for (i = 0; devtable[i].name; i++) |
| 48 |
< |
if (!strcmp(dname, devtable[i].name)) |
| 48 |
> |
if (!strcmp(dname, devtable[i].name)) { |
| 49 |
|
if ((dev = (*devtable[i].init)(dname, id)) == NULL) { |
| 50 |
|
sprintf(errmsg, "cannot initialize %s", dname); |
| 51 |
|
error(USER, errmsg); |
| 52 |
|
} else |
| 53 |
|
return; |
| 54 |
< |
#ifndef RHAS_FORK_EXEC /* XXX otherwise we do nothing? */ |
| 54 |
> |
} |
| 55 |
|
/* not there, try exec */ |
| 56 |
|
if ((dev = comm_init(dname, id)) == NULL) { |
| 57 |
|
sprintf(errmsg, "cannot start device \"%s\"", dname); |
| 58 |
|
error(USER, errmsg); |
| 59 |
|
} |
| 130 |
– |
#endif |
| 60 |
|
} |
| 61 |
|
|
| 62 |
|
|
| 63 |
|
void |
| 64 |
< |
devclose() /* close our device */ |
| 64 |
> |
devclose(void) /* close our device */ |
| 65 |
|
{ |
| 66 |
|
if (dev != NULL) |
| 67 |
|
(*dev->close)(); |
| 70 |
|
|
| 71 |
|
|
| 72 |
|
void |
| 73 |
< |
printdevices() /* print list of output devices */ |
| 73 |
> |
printdevices(void) /* print list of output devices */ |
| 74 |
|
{ |
| 75 |
< |
register int i; |
| 75 |
> |
int i; |
| 76 |
|
|
| 77 |
|
for (i = 0; devtable[i].name; i++) |
| 78 |
|
printf("%-16s # %s\n", devtable[i].name, devtable[i].descrip); |
| 80 |
|
|
| 81 |
|
|
| 82 |
|
void |
| 83 |
< |
rview() /* do a view */ |
| 83 |
> |
rview(void) /* do a view */ |
| 84 |
|
{ |
| 85 |
|
char buf[32]; |
| 86 |
|
|
| 87 |
|
devopen(dvcname); /* open device */ |
| 88 |
< |
newimage(); /* start image (calls fillreserves) */ |
| 88 |
> |
newimage(NULL); /* start image */ |
| 89 |
|
|
| 90 |
|
for ( ; ; ) { /* quit in command() */ |
| 91 |
|
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
| 92 |
|
command("done: "); |
| 164 |
– |
while (reserve_mem == NULL) |
| 165 |
– |
command("out of memory: "); |
| 93 |
|
errno = 0; |
| 94 |
|
if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) { |
| 95 |
|
sprintf(buf, "%d sampling...\n", 1<<pdepth); |
| 98 |
|
} else { |
| 99 |
|
sprintf(buf, "%d refining...\n", 1<<pdepth); |
| 100 |
|
(*dev->comout)(buf); |
| 101 |
< |
refine(&ptrunk, 0, 0, hresolu, vresolu, pdepth+1); |
| 101 |
> |
refine(&ptrunk, pdepth+1); |
| 102 |
|
} |
| 103 |
< |
if (errno == ENOMEM) /* ran out of memory */ |
| 177 |
< |
freereserves(); |
| 178 |
< |
else if (dev->inpready) /* noticed some input */ |
| 103 |
> |
if (dev->inpready) /* noticed some input */ |
| 104 |
|
command(": "); |
| 105 |
|
else /* finished this depth */ |
| 106 |
|
pdepth++; |
| 109 |
|
|
| 110 |
|
|
| 111 |
|
void |
| 112 |
< |
fillreserves() /* fill memory reserves */ |
| 112 |
> |
command( /* get/execute command */ |
| 113 |
> |
char *prompt |
| 114 |
> |
) |
| 115 |
|
{ |
| 189 |
– |
if (reserve_mem != NULL) |
| 190 |
– |
return; |
| 191 |
– |
reserve_mem = (char *)malloc(RESERVE_AMT); |
| 192 |
– |
} |
| 193 |
– |
|
| 194 |
– |
|
| 195 |
– |
void |
| 196 |
– |
freereserves() /* free memory reserves */ |
| 197 |
– |
{ |
| 198 |
– |
if (reserve_mem == NULL) |
| 199 |
– |
return; |
| 200 |
– |
free(reserve_mem); |
| 201 |
– |
reserve_mem = NULL; |
| 202 |
– |
} |
| 203 |
– |
|
| 204 |
– |
|
| 205 |
– |
void |
| 206 |
– |
command(prompt) /* get/execute command */ |
| 207 |
– |
char *prompt; |
| 208 |
– |
{ |
| 116 |
|
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
| 117 |
|
char inpbuf[256]; |
| 118 |
|
char *args; |
| 122 |
|
; |
| 123 |
|
if (*args) *args++ = '\0'; |
| 124 |
|
else *++args = '\0'; |
| 125 |
+ |
|
| 126 |
+ |
if (waitrays() < 0) /* clear ray queue */ |
| 127 |
+ |
quit(1); |
| 128 |
|
|
| 129 |
|
switch (inpbuf[0]) { |
| 130 |
< |
case 'f': /* new frame (or free mem.) */ |
| 130 |
> |
case 'f': /* new frame (|focus|free) */ |
| 131 |
|
if (badcom("frame")) { |
| 132 |
< |
if (badcom("free")) |
| 133 |
< |
goto commerr; |
| 134 |
< |
free_objmem(); |
| 132 |
> |
if (badcom("focus")) { |
| 133 |
> |
if (badcom("free")) |
| 134 |
> |
goto commerr; |
| 135 |
> |
free_objmem(); |
| 136 |
> |
break; |
| 137 |
> |
} |
| 138 |
> |
getfocus(args); |
| 139 |
|
break; |
| 140 |
|
} |
| 141 |
|
getframe(args); |
| 178 |
|
case 'n': /* new picture */ |
| 179 |
|
if (badcom("new")) |
| 180 |
|
goto commerr; |
| 181 |
< |
newimage(); |
| 181 |
> |
newimage(args); |
| 182 |
|
break; |
| 183 |
|
case 't': /* trace a ray */ |
| 184 |
|
if (badcom("trace")) |
| 266 |
|
|
| 267 |
|
|
| 268 |
|
void |
| 269 |
< |
rsample() /* sample the image */ |
| 269 |
> |
rsample(void) /* sample the image */ |
| 270 |
|
{ |
| 271 |
|
int xsiz, ysiz, y; |
| 358 |
– |
RECT r; |
| 272 |
|
PNODE *p; |
| 273 |
< |
register RECT *rl; |
| 274 |
< |
register PNODE **pl; |
| 362 |
< |
register int x; |
| 273 |
> |
PNODE **pl; |
| 274 |
> |
int x; |
| 275 |
|
/* |
| 276 |
|
* We initialize the bottom row in the image at our current |
| 277 |
|
* resolution. During sampling, we check super-pixels to the |
| 281 |
|
*/ |
| 282 |
|
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
| 283 |
|
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
| 372 |
– |
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
| 373 |
– |
if (rl == NULL) |
| 374 |
– |
return; |
| 284 |
|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
| 285 |
< |
if (pl == NULL) { |
| 377 |
< |
free((void *)rl); |
| 285 |
> |
if (pl == NULL) |
| 286 |
|
return; |
| 379 |
– |
} |
| 287 |
|
/* |
| 288 |
|
* Initialize the bottom row. |
| 289 |
|
*/ |
| 290 |
< |
rl[0].l = rl[0].d = 0; |
| 384 |
< |
rl[0].r = hresolu; rl[0].u = vresolu; |
| 385 |
< |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
| 290 |
> |
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, pdepth); |
| 291 |
|
for (x = 1; x < xsiz; x++) { |
| 387 |
– |
rl[x].l = rl[x].d = 0; |
| 388 |
– |
rl[x].r = hresolu; rl[x].u = vresolu; |
| 292 |
|
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 293 |
< |
pframe.d, &ptrunk, rl+x, pdepth); |
| 293 |
> |
pframe.d, &ptrunk, pdepth); |
| 294 |
|
} |
| 295 |
|
/* sample the image */ |
| 296 |
|
for (y = 0; /* y < ysiz */ ; y++) { |
| 302 |
|
*/ |
| 303 |
|
if (pl[x] != pl[x+1] && bigdiff(pl[x]->v, |
| 304 |
|
pl[x+1]->v, maxdiff)) { |
| 305 |
< |
refine(pl[x], rl[x].l, rl[x].d, |
| 306 |
< |
rl[x].r, rl[x].u, 1); |
| 404 |
< |
refine(pl[x+1], rl[x+1].l, rl[x+1].d, |
| 405 |
< |
rl[x+1].r, rl[x+1].u, 1); |
| 305 |
> |
refine(pl[x], 1); |
| 306 |
> |
refine(pl[x+1], 1); |
| 307 |
|
} |
| 308 |
|
} |
| 309 |
|
if (y >= ysiz-1) |
| 314 |
|
/* |
| 315 |
|
* Find super-pixel at this position in next row. |
| 316 |
|
*/ |
| 416 |
– |
r.l = r.d = 0; |
| 417 |
– |
r.r = hresolu; r.u = vresolu; |
| 317 |
|
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 318 |
|
pframe.d+(((y+1)*vresolu)>>pdepth), |
| 319 |
< |
&ptrunk, &r, pdepth); |
| 319 |
> |
&ptrunk, pdepth); |
| 320 |
|
/* |
| 321 |
|
* Test super-pixel in next row. |
| 322 |
|
*/ |
| 323 |
|
if (pl[x] != p && bigdiff(pl[x]->v, p->v, maxdiff)) { |
| 324 |
< |
refine(pl[x], rl[x].l, rl[x].d, |
| 325 |
< |
rl[x].r, rl[x].u, 1); |
| 427 |
< |
refine(p, r.l, r.d, r.r, r.u, 1); |
| 324 |
> |
refine(pl[x], 1); |
| 325 |
> |
refine(p, 1); |
| 326 |
|
} |
| 327 |
|
/* |
| 328 |
|
* Copy into super-pixel array. |
| 329 |
|
*/ |
| 432 |
– |
rl[x].l = r.l; rl[x].d = r.d; |
| 433 |
– |
rl[x].r = r.r; rl[x].u = r.u; |
| 330 |
|
pl[x] = p; |
| 331 |
|
} |
| 332 |
|
} |
| 333 |
|
escape: |
| 438 |
– |
free((void *)rl); |
| 334 |
|
free((void *)pl); |
| 335 |
|
} |
| 336 |
|
|
| 337 |
|
|
| 338 |
|
int |
| 339 |
< |
refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
| 340 |
< |
register PNODE *p; |
| 341 |
< |
int xmin, ymin, xmax, ymax; |
| 342 |
< |
int pd; |
| 339 |
> |
refine( /* refine a node */ |
| 340 |
> |
PNODE *p, |
| 341 |
> |
int pd |
| 342 |
> |
) |
| 343 |
|
{ |
| 344 |
|
int growth; |
| 345 |
|
int mx, my; |
| 351 |
|
if (pd <= 0) /* depth limit */ |
| 352 |
|
return(0); |
| 353 |
|
|
| 354 |
< |
mx = (xmin + xmax) >> 1; |
| 355 |
< |
my = (ymin + ymax) >> 1; |
| 354 |
> |
mx = (p->xmin + p->xmax) >> 1; |
| 355 |
> |
my = (p->ymin + p->ymax) >> 1; |
| 356 |
|
growth = 0; |
| 357 |
|
|
| 358 |
|
if (p->kid == NULL) { /* subdivide */ |
| 359 |
|
|
| 360 |
|
if ((p->kid = newptree()) == NULL) |
| 361 |
|
return(0); |
| 362 |
+ |
|
| 363 |
+ |
p->kid[UR].xmin = mx; |
| 364 |
+ |
p->kid[UR].ymin = my; |
| 365 |
+ |
p->kid[UR].xmax = p->xmax; |
| 366 |
+ |
p->kid[UR].ymax = p->ymax; |
| 367 |
+ |
p->kid[UL].xmin = p->xmin; |
| 368 |
+ |
p->kid[UL].ymin = my; |
| 369 |
+ |
p->kid[UL].xmax = mx; |
| 370 |
+ |
p->kid[UL].ymax = p->ymax; |
| 371 |
+ |
p->kid[DR].xmin = mx; |
| 372 |
+ |
p->kid[DR].ymin = p->ymin; |
| 373 |
+ |
p->kid[DR].xmax = p->xmax; |
| 374 |
+ |
p->kid[DR].ymax = my; |
| 375 |
+ |
p->kid[DL].xmin = p->xmin; |
| 376 |
+ |
p->kid[DL].ymin = p->ymin; |
| 377 |
+ |
p->kid[DL].xmax = mx; |
| 378 |
+ |
p->kid[DL].ymax = my; |
| 379 |
|
/* |
| 380 |
|
* The following paint order can leave a black pixel |
| 381 |
|
* if redraw() is called in (*dev->paintr)(). |
| 382 |
|
*/ |
| 383 |
|
if (p->x >= mx && p->y >= my) |
| 384 |
|
pcopy(p, p->kid+UR); |
| 385 |
< |
else |
| 386 |
< |
paint(p->kid+UR, mx, my, xmax, ymax); |
| 385 |
> |
else if (paint(p->kid+UR) < 0) |
| 386 |
> |
quit(1); |
| 387 |
|
if (p->x < mx && p->y >= my) |
| 388 |
|
pcopy(p, p->kid+UL); |
| 389 |
< |
else |
| 390 |
< |
paint(p->kid+UL, xmin, my, mx, ymax); |
| 389 |
> |
else if (paint(p->kid+UL) < 0) |
| 390 |
> |
quit(1); |
| 391 |
|
if (p->x >= mx && p->y < my) |
| 392 |
|
pcopy(p, p->kid+DR); |
| 393 |
< |
else |
| 394 |
< |
paint(p->kid+DR, mx, ymin, xmax, my); |
| 393 |
> |
else if (paint(p->kid+DR) < 0) |
| 394 |
> |
quit(1); |
| 395 |
|
if (p->x < mx && p->y < my) |
| 396 |
|
pcopy(p, p->kid+DL); |
| 397 |
< |
else |
| 398 |
< |
paint(p->kid+DL, xmin, ymin, mx, my); |
| 397 |
> |
else if (paint(p->kid+DL) < 0) |
| 398 |
> |
quit(1); |
| 399 |
|
|
| 400 |
|
growth++; |
| 401 |
|
} |
| 402 |
|
/* do children */ |
| 403 |
|
if (mx > pframe.l) { |
| 404 |
|
if (my > pframe.d) |
| 405 |
< |
growth += refine(p->kid+DL, xmin, ymin, mx, my, pd-1); |
| 405 |
> |
growth += refine(p->kid+DL, pd-1); |
| 406 |
|
if (my < pframe.u) |
| 407 |
< |
growth += refine(p->kid+UL, xmin, my, mx, ymax, pd-1); |
| 407 |
> |
growth += refine(p->kid+UL, pd-1); |
| 408 |
|
} |
| 409 |
|
if (mx < pframe.r) { |
| 410 |
|
if (my > pframe.d) |
| 411 |
< |
growth += refine(p->kid+DR, mx, ymin, xmax, my, pd-1); |
| 411 |
> |
growth += refine(p->kid+DR, pd-1); |
| 412 |
|
if (my < pframe.u) |
| 413 |
< |
growth += refine(p->kid+UR, mx, my, xmax, ymax, pd-1); |
| 502 |
< |
} |
| 503 |
< |
/* recompute sum */ |
| 504 |
< |
if (growth) { |
| 505 |
< |
setcolor(p->v, 0.0, 0.0, 0.0); |
| 506 |
< |
for (i = 0; i < 4; i++) |
| 507 |
< |
addcolor(p->v, p->kid[i].v); |
| 508 |
< |
scalecolor(p->v, 0.25); |
| 413 |
> |
growth += refine(p->kid+UR, pd-1); |
| 414 |
|
} |
| 415 |
|
return(growth); |
| 416 |
|
} |