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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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– |
#include "color.h" |
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– |
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#include "rpaint.h" |
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#include <signal.h> |
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– |
#include <setjmp.h> |
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– |
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#include <ctype.h> |
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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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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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RECT pframe; /* current frame boundaries */ |
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int pdepth; /* image depth in current frame */ |
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|
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– |
static jmp_buf mainloop; /* longjmp back to main loop */ |
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static char *reserve_mem = NULL; /* pre-allocated reserve memory */ |
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|
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< |
#define RESERVE_AMT 8192 /* amount of memory to reserve */ |
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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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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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< |
setjmp(mainloop); |
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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 (hresolu <= 1<<pdepth && |
| 126 |
< |
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 (hresolu <= psample<<pdepth && |
| 132 |
< |
vresolu <= psample<<pdepth) { |
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> |
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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(*dev->comout)(buf); |
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refine(&ptrunk, 0, 0, hresolu, vresolu, pdepth+1); |
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} |
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< |
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(": "); |
| 146 |
< |
else |
| 146 |
> |
else /* finished this depth */ |
| 147 |
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pdepth++; |
| 148 |
|
} |
| 149 |
|
} |
| 150 |
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|
| 151 |
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|
| 152 |
< |
memreserve() /* fill memory reserves */ |
| 152 |
> |
fillreserves() /* fill memory reserves */ |
| 153 |
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{ |
| 154 |
|
if (reserve_mem != NULL) |
| 155 |
< |
return; /* got some already */ |
| 155 |
> |
return; |
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|
reserve_mem = malloc(RESERVE_AMT); |
| 157 |
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} |
| 158 |
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|
| 159 |
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|
| 160 |
< |
memerror(detail) /* try and rescue a memory error */ |
| 156 |
< |
char *detail; |
| 160 |
> |
freereserves() /* free memory reserves */ |
| 161 |
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{ |
| 162 |
< |
if (reserve_mem == NULL) { |
| 163 |
< |
sprintf(errmsg, "out of memory %s", detail); |
| 160 |
< |
error(SYSTEM, errmsg); |
| 161 |
< |
} |
| 162 |
> |
if (reserve_mem == NULL) |
| 163 |
> |
return; |
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|
free(reserve_mem); |
| 165 |
|
reserve_mem = NULL; |
| 164 |
– |
do |
| 165 |
– |
command("out of memory: "); |
| 166 |
– |
while (reserve_mem == NULL); |
| 167 |
– |
longjmp(mainloop, 1); |
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} |
| 167 |
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|
| 168 |
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|
| 298 |
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ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
| 299 |
|
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
| 300 |
|
if (rl == NULL) |
| 301 |
< |
memerror("in rsample"); |
| 301 |
> |
return; |
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|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
| 303 |
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if (pl == NULL) |
| 304 |
< |
memerror("in rsample"); |
| 304 |
> |
return; |
| 305 |
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/* |
| 306 |
|
* Initialize the bottom row. |
| 307 |
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*/ |
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/* sample the image */ |
| 318 |
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for (y = 0; /* y < ysiz */ ; y++) { |
| 319 |
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for (x = 0; x < xsiz-1; x++) { |
| 320 |
< |
if (dev->inpready) |
| 320 |
> |
if (dev->inpready || errno == ENOMEM) |
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goto escape; |
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/* |
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* Test super-pixel to the right. |
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if (y >= ysiz-1) |
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|
break; |
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for (x = 0; x < xsiz; x++) { |
| 336 |
< |
if (dev->inpready) |
| 336 |
> |
if (dev->inpready || errno == ENOMEM) |
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goto escape; |
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/* |
| 339 |
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* Find super-pixel at this position in next row. |
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if (p->kid == NULL) { /* subdivide */ |
| 389 |
|
|
| 390 |
|
if ((p->kid = newptree()) == NULL) |
| 391 |
< |
memerror("in refine"); |
| 391 |
> |
return(0); |
| 392 |
|
/* |
| 393 |
|
* The following paint order can leave a black pixel |
| 394 |
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* when redraw() is called in (*dev->paintr)(). |
