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/* Copyright (c) 1987 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* rview.c - routines and variables for interactive view generation. |
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* |
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* 3/24/87 |
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* External symbols declared in rpaint.h |
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*/ |
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#include "standard.h" |
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#include "copyright.h" |
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|
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#include "color.h" |
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#include <signal.h> |
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#include <ctype.h> |
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|
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#include "ray.h" |
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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 <setjmp.h> |
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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|
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#include <ctype.h> |
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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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extern void ambnotify(); |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
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|
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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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void (*trace)() = NULL; /* trace call */ |
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|
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int do_irrad = 0; /* compute irradiance? */ |
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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 maxdiff = .15; /* max. sample difference */ |
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|
39 |
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double exposure = 1.0; /* exposure for scene */ |
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double exposure = 1.0; /* exposure for scene */ |
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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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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 directvis = 1; /* sources visible? */ |
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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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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
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COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
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double seccg = 0.; /* global scattering eccentricity */ |
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double ssampdist = 0.; /* scatter sampling distance */ |
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|
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double specthresh = .3; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 1e-2; /* minimum ray weight */ |
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|
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 8; /* ambient resolution */ |
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int ambdiv = 32; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambvwt = 0; /* initial weight for ambient value */ |
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double ambacc = 0.3; /* ambient accuracy */ |
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int ambres = 32; /* ambient resolution */ |
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int ambdiv = 256; /* ambient divisions */ |
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int ambssamp = 64; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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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 = dev_default; /* output device name */ |
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char *dvcname = 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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char rifname[128]; /* rad input file name */ |
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|
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VIEW oldview; /* previous view parameters */ |
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|
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PNODE ptrunk; /* the base of our image */ |
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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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#define CTRL(c) ((c)-'@') |
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|
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|
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void |
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quit(code) /* quit program */ |
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int code; |
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{ |
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#ifdef MSTATS |
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if (code == 2 && errno == ENOMEM) |
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printmemstats(stderr); |
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#endif |
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devclose(); |
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exit(code); |
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} |
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|
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|
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void |
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devopen(dname) /* open device driver */ |
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char *dname; |
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{ |
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id = octname!=NULL ? octname : progname; |
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/* check device table */ |
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for (i = 0; devtable[i].name; i++) |
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if (!strcmp(dname, devtable[i].name)) |
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if (!strcmp(dname, devtable[i].name)) { |
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if ((dev = (*devtable[i].init)(dname, id)) == NULL) { |
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sprintf(errmsg, "cannot initialize %s", dname); |
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error(USER, errmsg); |
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} else |
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return; |
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} |
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/* not there, try exec */ |
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if ((dev = comm_init(dname, id)) == NULL) { |
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sprintf(errmsg, "cannot start device \"%s\"", dname); |
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} |
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|
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|
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void |
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devclose() /* close our device */ |
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{ |
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if (dev != NULL) |
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} |
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|
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|
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void |
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printdevices() /* print list of output devices */ |
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{ |
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register int i; |
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} |
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|
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|
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+ |
void |
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rview() /* do a view */ |
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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 */ |
158 |
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setjmp(mainloop); |
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devopen(dvcname); /* open device */ |
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> |
newimage(); /* start image (calls fillreserves) */ |
158 |
> |
|
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for ( ; ; ) { /* quit in command() */ |
160 |
< |
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: "); |
162 |
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|
163 |
< |
if (hresolu <= psample<<pdepth && |
164 |
< |
vresolu <= psample<<pdepth) { |
162 |
> |
while (reserve_mem == NULL) |
163 |
> |
command("out of memory: "); |
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> |
errno = 0; |
165 |
> |
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(": "); |
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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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memreserve() /* fill memory reserves */ |
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void |
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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; /* got some already */ |
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< |
reserve_mem = malloc(RESERVE_AMT); |
188 |
> |
return; |
189 |
> |
reserve_mem = (char *)malloc(RESERVE_AMT); |
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} |
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|
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|
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< |
memerror(detail) /* try and rescue a memory error */ |
194 |
< |
char *detail; |
193 |
> |
void |
194 |
> |
freereserves() /* free memory reserves */ |
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{ |
196 |
< |
if (reserve_mem == NULL) { |
197 |
< |
sprintf(errmsg, "out of memory %s", detail); |
160 |
< |
error(SYSTEM, errmsg); |
161 |
< |
} |
196 |
> |
if (reserve_mem == NULL) |
197 |
> |
return; |
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free(reserve_mem); |
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reserve_mem = NULL; |
164 |
– |
do |
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command("out of memory: "); |
166 |
– |
while (reserve_mem == NULL); |
167 |
– |
longjmp(mainloop, 1); |
200 |
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} |
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|
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|
203 |
+ |
void |
204 |
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command(prompt) /* get/execute command */ |
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char *prompt; |
206 |
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{ |
207 |
< |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
175 |
< |
double atof(); |
207 |
> |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
208 |
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char inpbuf[256]; |
209 |
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char *args; |
210 |
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again: |
215 |
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else *++args = '\0'; |
216 |
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|
217 |
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switch (inpbuf[0]) { |
218 |
< |
case 'f': /* new frame */ |
219 |
< |
if (badcom("frame")) |
220 |
< |
goto commerr; |
218 |
> |
case 'f': /* new frame (or free mem.) */ |
219 |
> |
if (badcom("frame")) { |
220 |
> |
if (badcom("free")) |
221 |
> |
goto commerr; |
222 |
> |
free_objmem(); |
223 |
> |
break; |
224 |
> |
} |
225 |
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getframe(args); |
226 |
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break; |
227 |
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case 'v': /* view */ |
234 |
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goto commerr; |
235 |
|
lastview(args); |
236 |
|
break; |
237 |
+ |
case 'V': /* save view */ |
238 |
+ |
if (badcom("V")) |
239 |
+ |
goto commerr; |
240 |
+ |
saveview(args); |
241 |
+ |
break; |
242 |
+ |
case 'L': /* load view */ |
243 |
+ |
if (badcom("L")) |
244 |
+ |
goto commerr; |
245 |
+ |
loadview(args); |
246 |
+ |
break; |
247 |
|
case 'e': /* exposure */ |
248 |
|
if (badcom("exposure")) |
249 |
|
goto commerr; |
250 |
|
getexposure(args); |
251 |
|
break; |
252 |
|
case 's': /* set a parameter */ |
253 |
< |
if (badcom("set")) |
253 |
> |
if (badcom("set")) { |
254 |
> |
#ifdef SIGTSTP |
255 |
> |
if (!badcom("stop")) |
256 |
> |
goto dostop; |
257 |
> |
#endif |
258 |
|
goto commerr; |
259 |
+ |
} |
260 |
|
setparam(args); |
261 |
|
break; |
262 |
|
case 'n': /* new picture */ |
274 |
|
goto commerr; |
275 |
|
getaim(args); |
276 |
|
break; |
277 |
< |
case 'm': /* move camera */ |
277 |
> |
case 'm': /* move camera (or memstats) */ |
278 |
|
if (badcom("move")) |
279 |
+ |
#ifdef MSTATS |
280 |
+ |
{ |
281 |
+ |
if (badcom("memory")) |
282 |
+ |
goto commerr; |
283 |
+ |
printmemstats(stderr); |
284 |
+ |
break; |
285 |
+ |
} |
286 |
+ |
#else |
287 |
|
goto commerr; |
288 |
+ |
#endif |
289 |
|
getmove(args); |
290 |
|
break; |
291 |
|
case 'r': /* rotate/repaint */ |
292 |
|
if (badcom("rotate")) { |
293 |
< |
if (badcom("repaint")) |
294 |
< |
goto commerr; |
293 |
> |
if (badcom("repaint")) { |
294 |
> |
if (badcom("redraw")) |
295 |
> |
goto commerr; |
296 |
> |
redraw(); |
297 |
> |
break; |
298 |
> |
} |
299 |
|
getrepaint(args); |
300 |
|
break; |
301 |
|
} |
302 |
|
getrotate(args); |
303 |
|
break; |
304 |
|
case 'p': /* pivot view */ |
305 |
< |
if (badcom("pivot")) |
306 |
< |
goto commerr; |
305 |
> |
if (badcom("pivot")) { |
306 |
> |
if (badcom("pause")) |
307 |
> |
goto commerr; |
308 |
> |
goto again; |
309 |
> |
} |
310 |
|
getpivot(args); |
311 |
|
break; |
312 |
< |
case CTRL(R): /* redraw */ |
312 |
> |
case CTRL('R'): /* redraw */ |
313 |
|
redraw(); |
314 |
|
break; |
315 |
|
case 'w': /* write */ |
321 |
|
if (badcom("quit")) |
322 |
|
goto commerr; |
323 |
|
quit(0); |
324 |
< |
case CTRL(C): /* interrupt */ |
324 |
> |
case CTRL('C'): /* interrupt */ |
325 |
|
goto again; |
326 |
< |
#ifdef SIGTSTP |
327 |
< |
case CTRL(Z): /* stop */ |
326 |
> |
#ifdef SIGTSTP |
327 |
> |
case CTRL('Z'):; /* stop */ |
328 |
> |
dostop: |
329 |
|
devclose(); |
330 |
|
kill(0, SIGTSTP); |
331 |
|
/* pc stops here */ |
332 |
< |
devopen(devname); |
332 |
> |
devopen(dvcname); |
333 |
|
redraw(); |
334 |
|
break; |
335 |
|
#endif |
345 |
|
error(COMMAND, errmsg); |
346 |
|
break; |
347 |
|
} |
348 |
< |
#undef badcom |
348 |
> |
#undef badcom |
349 |
|
} |
350 |
|
|
351 |
|
|
352 |
+ |
void |
353 |
|
rsample() /* sample the image */ |
354 |
|
{ |
355 |
|
int xsiz, ysiz, y; |
356 |
|
RECT r; |
357 |
|
PNODE *p; |
358 |
|
register RECT *rl; |
359 |
< |
register PNODE **pl; |
359 |
> |
register PNODE **pl; |
360 |
|
register int x; |
361 |
|
/* |
362 |
|
* We initialize the bottom row in the image at our current |
363 |
< |
* resolution. During sampling, we check super-pixels to the |
363 |
> |
* resolution. During sampling, we check super-pixels to the |
364 |
|
* right and above by calling bigdiff(). If there is a significant |
365 |
|
* difference, we subsample the super-pixels. The testing process |
366 |
|
* includes initialization of the next row. |
367 |
|
*/ |
368 |
< |
xsiz = (((pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
369 |
< |
ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
368 |
> |
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
369 |
> |
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
370 |
|
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
371 |
|
if (rl == NULL) |
372 |
< |
memerror("in rsample"); |
372 |
> |
return; |
373 |
|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
374 |
< |
if (pl == NULL) |
375 |
< |
memerror("in rsample"); |
374 |
> |
if (pl == NULL) { |
375 |
> |
free((void *)rl); |
376 |
> |
return; |
377 |
> |
} |
378 |
|
/* |
379 |
|
* Initialize the bottom row. |
380 |
|
*/ |
390 |
|
/* sample the image */ |
391 |
|
for (y = 0; /* y < ysiz */ ; y++) { |
392 |
|
for (x = 0; x < xsiz-1; x++) { |
393 |
< |
if (dev->inpready) |
393 |
> |
if (dev->inpready || errno == ENOMEM) |
394 |
|
goto escape; |
395 |
|
/* |
396 |
|
* Test super-pixel to the right. |
406 |
|
if (y >= ysiz-1) |
407 |
|
break; |
408 |
|
for (x = 0; x < xsiz; x++) { |
409 |
< |
if (dev->inpready) |
409 |
> |
if (dev->inpready || errno == ENOMEM) |
410 |
|
goto escape; |
411 |
|
/* |
412 |
|
* Find super-pixel at this position in next row. |
433 |
|
} |
434 |
|
} |
435 |
|
escape: |
436 |
< |
free((char *)rl); |
437 |
< |
free((char *)pl); |
436 |
> |
free((void *)rl); |
437 |
> |
free((void *)pl); |
438 |
|
} |
439 |
|
|
440 |
|
|
441 |
|
int |
442 |
|
refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
443 |
< |
register PNODE *p; |
443 |
> |
register PNODE *p; |
444 |
|
int xmin, ymin, xmax, ymax; |
445 |
|
int pd; |
446 |
|
{ |
461 |
|
if (p->kid == NULL) { /* subdivide */ |
462 |
|
|
463 |
|
if ((p->kid = newptree()) == NULL) |
464 |
< |
memerror("in refine"); |
464 |
> |
return(0); |
465 |
|
/* |
466 |
|
* The following paint order can leave a black pixel |
467 |
< |
* when redraw() is called in (*dev->paintr)(). |
467 |
> |
* if redraw() is called in (*dev->paintr)(). |
468 |
|
*/ |
469 |
|
if (p->x >= mx && p->y >= my) |
470 |
|
pcopy(p, p->kid+UR); |