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* 3/24/87 |
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*/ |
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|
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< |
#include "standard.h" |
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> |
#include "ray.h" |
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|
| 15 |
– |
#include "color.h" |
| 16 |
– |
|
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#include "rpaint.h" |
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|
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#include <signal.h> |
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|
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#include <ctype.h> |
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|
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< |
VIEW ourview = STDVIEW(470); /* viewing parameters */ |
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> |
VIEW ourview = STDVIEW; /* viewing parameters */ |
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> |
int hresolu, vresolu; /* image resolution */ |
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|
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+ |
int dimlist[MAXDIM]; /* sampling dimensions */ |
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+ |
int ndims = 0; /* number of sampling dimensions */ |
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+ |
int samplendx = 0; /* index for this sample */ |
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+ |
|
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int psample = 8; /* pixel sample size */ |
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double maxdiff = .15; /* max. sample difference */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .1; /* shadow threshold */ |
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double shadcert = .25; /* shadow certainty */ |
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+ |
int directrelay = 0; /* number of source relays */ |
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+ |
int vspretest = 128; /* virtual source pretest density */ |
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+ |
int directinvis = 0; /* sources invisible? */ |
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+ |
double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
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|
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int maxdepth = 4; /* maximum recursion depth */ |
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double minweight = 1e-2; /* minimum ray weight */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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|
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int greyscale = 0; /* map colors to brightness? */ |
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< |
char *devname = "X"; /* output device name */ |
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> |
char *devname = dev_default; /* output device name */ |
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|
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struct driver *dev = NULL; /* driver functions */ |
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|
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RECT pframe; /* current frame boundaries */ |
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int pdepth; /* image depth in current frame */ |
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|
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< |
#define CTRL(c) ('c'-'@') |
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> |
static char *reserve_mem = NULL; /* pre-allocated reserve memory */ |
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|
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+ |
#define RESERVE_AMT 32768 /* amount of memory to reserve */ |
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|
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+ |
#define CTRL(c) ((c)-'@') |
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+ |
|
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+ |
|
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quit(code) /* quit program */ |
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int code; |
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{ |
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char buf[32]; |
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|
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devopen(devname); /* open device */ |
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< |
newimage(); /* set up image */ |
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> |
newimage(); /* start image (calls fillreserves) */ |
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|
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for ( ; ; ) { /* quit in command() */ |
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< |
while (ourview.hresolu <= 1<<pdepth && |
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< |
ourview.vresolu <= 1<<pdepth) |
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> |
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
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command("done: "); |
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< |
|
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< |
if (ourview.hresolu <= psample<<pdepth && |
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< |
ourview.vresolu <= psample<<pdepth) { |
| 130 |
> |
while (reserve_mem == NULL) |
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> |
command("out of memory: "); |
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> |
errno = 0; |
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> |
if (hresolu <= psample<<pdepth && vresolu <= psample<<pdepth) { |
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sprintf(buf, "%d sampling...\n", 1<<pdepth); |
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(*dev->comout)(buf); |
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rsample(); |
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} else { |
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sprintf(buf, "%d refining...\n", 1<<pdepth); |
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(*dev->comout)(buf); |
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< |
refine(&ptrunk, 0, 0, ourview.hresolu, |
| 130 |
< |
ourview.vresolu, pdepth+1); |
| 140 |
> |
refine(&ptrunk, 0, 0, hresolu, vresolu, pdepth+1); |
| 141 |
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} |
| 142 |
< |
if (dev->inpready) |
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> |
if (errno == ENOMEM) /* ran out of memory */ |
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> |
freereserves(); |
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> |
else if (dev->inpready) /* noticed some input */ |
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command(": "); |
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< |
else |
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> |
else /* finished this depth */ |
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pdepth++; |
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} |
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} |
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|
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|
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+ |
fillreserves() /* fill memory reserves */ |
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+ |
{ |
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+ |
if (reserve_mem != NULL) |
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+ |
return; |
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+ |
reserve_mem = malloc(RESERVE_AMT); |
| 157 |
+ |
} |
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+ |
|
| 159 |
+ |
|
| 160 |
+ |
freereserves() /* free memory reserves */ |
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+ |
{ |
| 162 |
+ |
if (reserve_mem == NULL) |
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+ |
return; |
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+ |
free(reserve_mem); |
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+ |
reserve_mem = NULL; |
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+ |
} |
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+ |
|
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+ |
|
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command(prompt) /* get/execute command */ |
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char *prompt; |
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{ |
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#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
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– |
double atof(); |
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char inpbuf[256]; |
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char *args; |
| 175 |
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again: |
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< |
(*dev->comout)(prompt); /* get command + arguments */ |
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< |
(*dev->comin)(inpbuf); |
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> |
(*dev->comin)(inpbuf, prompt); /* get command + arguments */ |
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for (args = inpbuf; *args && *args != ' '; args++) |
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; |
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if (*args) *args++ = '\0'; |
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break; |
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case 'm': /* move camera */ |
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|
if (badcom("move")) |
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+ |
#ifdef MSTATS |
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+ |
{ |
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+ |
if (badcom("memory")) |
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+ |
goto commerr; |
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+ |
printmemstats(stderr); |
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+ |
break; |
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+ |
} |
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+ |
#else |
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|
goto commerr; |
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+ |
#endif |
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|
getmove(args); |
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|
break; |
| 237 |
< |
case 'r': /* rotate camera */ |
| 238 |
< |
if (badcom("rotate")) |
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< |
goto commerr; |
| 237 |
> |
case 'r': /* rotate/repaint */ |
| 238 |
> |
if (badcom("rotate")) { |
| 239 |
> |
if (badcom("repaint")) |
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> |
goto commerr; |
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> |
getrepaint(args); |
| 242 |
> |
break; |
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> |
} |
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|
getrotate(args); |
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|
break; |
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|
case 'p': /* pivot view */ |
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|
goto commerr; |
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|
getpivot(args); |
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|
break; |
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< |
case CTRL(R): /* redraw */ |
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> |
case CTRL('R'): /* redraw */ |
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|
redraw(); |
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|
break; |
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|
case 'w': /* write */ |
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|
if (badcom("quit")) |
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|
goto commerr; |
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|
quit(0); |
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< |
case CTRL(C): /* interrupt */ |
| 263 |
> |
case CTRL('C'): /* interrupt */ |
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|
goto again; |
| 265 |
|
#ifdef SIGTSTP |
| 266 |
< |
case CTRL(Z): /* stop */ |
| 266 |
> |
case CTRL('Z'): /* stop */ |
| 267 |
|
devclose(); |
| 268 |
|
kill(0, SIGTSTP); |
| 269 |
|
/* pc stops here */ |
| 302 |
|
* difference, we subsample the super-pixels. The testing process |
| 303 |
|
* includes initialization of the next row. |
| 304 |
|
*/ |
| 305 |
< |
xsiz = (((pframe.r-pframe.l)<<pdepth)+ourview.hresolu-1) / |
| 306 |
< |
ourview.hresolu; |
| 267 |
< |
ysiz = (((pframe.u-pframe.d)<<pdepth)+ourview.vresolu-1) / |
| 268 |
< |
ourview.vresolu; |
| 305 |
> |
xsiz = (((pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
| 306 |
> |
ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
| 307 |
|
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
| 308 |
+ |
if (rl == NULL) |
| 309 |
+ |
return; |
| 310 |
|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
| 311 |
< |
if (rl == NULL || pl == NULL) |
| 312 |
< |
error(SYSTEM, "out of memory in rsample"); |
| 311 |
> |
if (pl == NULL) |
| 312 |
> |
return; |
| 313 |
|
/* |
| 314 |
|
* Initialize the bottom row. |
| 315 |
|
*/ |
| 316 |
|
rl[0].l = rl[0].d = 0; |
| 317 |
< |
rl[0].r = ourview.hresolu; rl[0].u = ourview.vresolu; |
| 317 |
> |
rl[0].r = hresolu; rl[0].u = vresolu; |
| 318 |
|
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
| 319 |
|
for (x = 1; x < xsiz; x++) { |
| 320 |
|
rl[x].l = rl[x].d = 0; |
| 321 |
< |
rl[x].r = ourview.hresolu; rl[x].u = ourview.vresolu; |
| 322 |
< |
pl[x] = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
| 321 |
> |
rl[x].r = hresolu; rl[x].u = vresolu; |
| 322 |
> |
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 323 |
|
pframe.d, &ptrunk, rl+x, pdepth); |
| 324 |
|
} |
| 325 |
|
/* sample the image */ |
| 326 |
|
for (y = 0; /* y < ysiz */ ; y++) { |
| 327 |
|
for (x = 0; x < xsiz-1; x++) { |
| 328 |
< |
if (dev->inpready) |
| 328 |
> |
if (dev->inpready || errno == ENOMEM) |
| 329 |
|
goto escape; |
| 330 |
|
/* |
| 331 |
|
* Test super-pixel to the right. |
| 341 |
|
if (y >= ysiz-1) |
| 342 |
|
break; |
| 343 |
|
for (x = 0; x < xsiz; x++) { |
| 344 |
< |
if (dev->inpready) |
| 344 |
> |
if (dev->inpready || errno == ENOMEM) |
| 345 |
|
goto escape; |
| 346 |
|
/* |
| 347 |
|
* Find super-pixel at this position in next row. |
| 348 |
|
*/ |
| 349 |
|
r.l = r.d = 0; |
| 350 |
< |
r.r = ourview.hresolu; r.u = ourview.vresolu; |
| 351 |
< |
p = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
| 352 |
< |
pframe.d+(((y+1)*ourview.vresolu)>>pdepth), |
| 350 |
> |
r.r = hresolu; r.u = vresolu; |
| 351 |
> |
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 352 |
> |
pframe.d+(((y+1)*vresolu)>>pdepth), |
| 353 |
|
&ptrunk, &r, pdepth); |
| 354 |
|
/* |
| 355 |
|
* Test super-pixel in next row. |
| 396 |
|
if (p->kid == NULL) { /* subdivide */ |
| 397 |
|
|
| 398 |
|
if ((p->kid = newptree()) == NULL) |
| 399 |
< |
error(SYSTEM, "out of memory in refine"); |
| 399 |
> |
return(0); |
| 400 |
|
/* |
| 401 |
|
* The following paint order can leave a black pixel |
| 402 |
|
* when redraw() is called in (*dev->paintr)(). |