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* 3/24/87 |
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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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#include "rpaint.h" |
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#include <signal.h> |
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#include <ctype.h> |
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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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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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struct driver *dev = NULL; /* driver functions */ |
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RECT pframe; /* current frame boundaries */ |
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int pdepth; /* image depth in current frame */ |
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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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char buf[32]; |
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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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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) { |
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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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} 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, |
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ourview.vresolu, pdepth+1); |
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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(": "); |
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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); |
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} |
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|
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|
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freereserves() /* free memory reserves */ |
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{ |
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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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char inpbuf[256]; |
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char *args; |
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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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goto commerr; |
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getmove(args); |
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break; |
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< |
case 'r': /* rotate camera */ |
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< |
if (badcom("rotate")) |
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< |
goto commerr; |
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> |
case 'r': /* rotate/repaint */ |
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> |
if (badcom("rotate")) { |
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> |
if (badcom("repaint")) |
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> |
goto commerr; |
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> |
getrepaint(args); |
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> |
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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* difference, we subsample the super-pixels. The testing process |
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* includes initialization of the next row. |
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*/ |
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< |
xsiz = (((pframe.r-pframe.l)<<pdepth)+ourview.hresolu-1) / |
298 |
< |
ourview.hresolu; |
267 |
< |
ysiz = (((pframe.u-pframe.d)<<pdepth)+ourview.vresolu-1) / |
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< |
ourview.vresolu; |
297 |
> |
xsiz = (((pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
298 |
> |
ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
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rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
300 |
+ |
if (rl == NULL) |
301 |
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return; |
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pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
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< |
if (rl == NULL || pl == NULL) |
304 |
< |
error(SYSTEM, "out of memory in rsample"); |
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> |
if (pl == NULL) |
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> |
return; |
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/* |
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* Initialize the bottom row. |
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*/ |
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rl[0].l = rl[0].d = 0; |
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< |
rl[0].r = ourview.hresolu; rl[0].u = ourview.vresolu; |
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> |
rl[0].r = hresolu; rl[0].u = vresolu; |
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pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
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for (x = 1; x < xsiz; x++) { |
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rl[x].l = rl[x].d = 0; |
313 |
< |
rl[x].r = ourview.hresolu; rl[x].u = ourview.vresolu; |
314 |
< |
pl[x] = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
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> |
rl[x].r = hresolu; rl[x].u = vresolu; |
314 |
> |
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
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pframe.d, &ptrunk, rl+x, pdepth); |
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} |
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/* sample the image */ |
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for (y = 0; /* y < ysiz */ ; y++) { |
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for (x = 0; x < xsiz-1; x++) { |
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< |
if (dev->inpready) |
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> |
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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/* |
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* Find super-pixel at this position in next row. |
340 |
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*/ |
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r.l = r.d = 0; |
342 |
< |
r.r = ourview.hresolu; r.u = ourview.vresolu; |
343 |
< |
p = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
344 |
< |
pframe.d+(((y+1)*ourview.vresolu)>>pdepth), |
342 |
> |
r.r = hresolu; r.u = vresolu; |
343 |
> |
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
344 |
> |
pframe.d+(((y+1)*vresolu)>>pdepth), |
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&ptrunk, &r, pdepth); |
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/* |
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* Test super-pixel in next row. |
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if (p->kid == NULL) { /* subdivide */ |
389 |
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|
390 |
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if ((p->kid = newptree()) == NULL) |
391 |
< |
error(SYSTEM, "out of memory in refine"); |
391 |
> |
return(0); |
392 |
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/* |
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* The following paint order can leave a black pixel |
394 |
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* when redraw() is called in (*dev->paintr)(). |