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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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|
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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 "ray.h" |
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|
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#include "rpaint.h" |
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|
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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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> |
CUBE thescene; /* our scene */ |
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> |
OBJECT nsceneobjs; /* number of objects in our scene */ |
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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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+ |
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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|
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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 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? */ |
| 48 |
> |
double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
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|
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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 = 4; /* maximum recursion depth */ |
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< |
double minweight = 1e-2; /* minimum ray weight */ |
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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 = 64; /* ambient resolution */ |
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> |
int ambvwt = 0; /* initial weight for 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 ambounce = 0; /* ambient bounces */ |
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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 *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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< |
#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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+ |
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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< |
extern char *progname; |
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< |
char *devargv[3]; |
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> |
extern char *progname, *octname; |
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> |
char *id; |
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register int i; |
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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 ((dev = (*devtable[i].init)(progname)) == NULL) { |
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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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+ |
#ifndef NIX |
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/* not there, try exec */ |
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< |
devargv[0] = dname; |
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< |
devargv[1] = progname; |
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< |
devargv[2] = NULL; |
| 84 |
< |
if ((dev = comm_init(devargv)) == NULL) { |
| 126 |
> |
if ((dev = comm_init(dname, id)) == NULL) { |
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sprintf(errmsg, "cannot start device \"%s\"", dname); |
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error(USER, errmsg); |
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} |
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+ |
#endif |
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} |
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|
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|
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+ |
void |
| 135 |
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devclose() /* close our device */ |
| 136 |
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{ |
| 137 |
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if (dev != NULL) |
| 140 |
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} |
| 141 |
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|
| 142 |
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|
| 143 |
+ |
void |
| 144 |
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printdevices() /* print list of output devices */ |
| 145 |
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{ |
| 146 |
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register int i; |
| 150 |
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} |
| 151 |
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|
| 152 |
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|
| 153 |
+ |
void |
| 154 |
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rview() /* do a view */ |
| 155 |
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{ |
| 156 |
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char buf[32]; |
| 157 |
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|
| 158 |
< |
devopen(devname); /* open device */ |
| 159 |
< |
newimage(); /* set up image */ |
| 158 |
> |
devopen(dvcname); /* open device */ |
| 159 |
> |
newimage(); /* start image (calls fillreserves) */ |
| 160 |
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|
| 161 |
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for ( ; ; ) { /* quit in command() */ |
| 162 |
< |
while (ourview.hresolu <= 1<<pdepth && |
| 117 |
< |
ourview.vresolu <= 1<<pdepth) |
| 162 |
> |
while (hresolu <= 1<<pdepth && vresolu <= 1<<pdepth) |
| 163 |
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command("done: "); |
| 164 |
< |
|
| 165 |
< |
if (ourview.hresolu <= psample<<pdepth && |
| 166 |
< |
ourview.vresolu <= psample<<pdepth) { |
| 164 |
> |
while (reserve_mem == NULL) |
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> |
command("out of memory: "); |
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> |
errno = 0; |
| 167 |
> |
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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+ |
void |
| 187 |
+ |
fillreserves() /* fill memory reserves */ |
| 188 |
+ |
{ |
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+ |
if (reserve_mem != NULL) |
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+ |
return; |
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+ |
reserve_mem = (char *)malloc(RESERVE_AMT); |
| 192 |
+ |
} |
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+ |
|
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+ |
|
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+ |
void |
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+ |
freereserves() /* free memory reserves */ |
| 197 |
+ |
{ |
| 198 |
+ |
if (reserve_mem == NULL) |
| 199 |
+ |
return; |
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+ |
free(reserve_mem); |
| 201 |
+ |
reserve_mem = NULL; |
| 202 |
+ |
} |
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+ |
|
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+ |
|
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+ |
void |
| 206 |
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command(prompt) /* get/execute command */ |
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char *prompt; |
| 208 |
|
{ |
| 209 |
< |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
| 143 |
< |
double atof(); |
| 209 |
> |
#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
| 210 |
|
char inpbuf[256]; |
| 211 |
|
char *args; |
| 212 |
|
again: |
| 213 |
< |
(*dev->comout)(prompt); /* get command + arguments */ |
| 148 |
< |
(*dev->comin)(inpbuf); |
| 213 |
> |
(*dev->comin)(inpbuf, prompt); /* get command + arguments */ |
| 214 |
|
for (args = inpbuf; *args && *args != ' '; args++) |
| 215 |
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; |
| 216 |
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if (*args) *args++ = '\0'; |
| 217 |
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else *++args = '\0'; |
| 218 |
|
|
| 219 |
|
switch (inpbuf[0]) { |
| 220 |
< |
case 'f': /* new frame */ |
| 221 |
< |
if (badcom("frame")) |
| 222 |
< |
goto commerr; |
| 220 |
> |
case 'f': /* new frame (or free mem.) */ |
| 221 |
> |
if (badcom("frame")) { |
| 222 |
> |
if (badcom("free")) |
| 223 |
> |
goto commerr; |
| 224 |
> |
free_objmem(); |
| 225 |
> |
break; |
| 226 |
> |
} |
| 227 |
|
getframe(args); |
| 228 |
|
break; |
| 229 |
|
case 'v': /* view */ |
| 236 |
|
goto commerr; |
| 237 |
|
lastview(args); |
| 238 |
|
break; |
| 239 |
+ |
case 'V': /* save view */ |
| 240 |
+ |
if (badcom("V")) |
| 241 |
+ |
goto commerr; |
| 242 |
+ |
saveview(args); |
| 243 |
+ |
break; |
| 244 |
+ |
case 'L': /* load view */ |
| 245 |
+ |
if (badcom("L")) |
| 246 |
+ |
goto commerr; |
| 247 |
+ |
loadview(args); |
| 248 |
+ |
break; |
| 249 |
|
case 'e': /* exposure */ |
| 250 |
|
if (badcom("exposure")) |
| 251 |
|
goto commerr; |
| 252 |
|
getexposure(args); |
| 253 |
|
break; |
| 254 |
|
case 's': /* set a parameter */ |
| 255 |
< |
if (badcom("set")) |
| 255 |
> |
if (badcom("set")) { |
| 256 |
> |
#ifdef SIGTSTP |
| 257 |
> |
if (!badcom("stop")) |
| 258 |
> |
goto dostop; |
| 259 |
> |
#endif |
| 260 |
|
goto commerr; |
| 261 |
+ |
} |
| 262 |
|
setparam(args); |
| 263 |
|
break; |
| 264 |
|
case 'n': /* new picture */ |
| 276 |
|
goto commerr; |
| 277 |
|
getaim(args); |
| 278 |
|
break; |
| 279 |
< |
case 'm': /* move camera */ |
| 279 |
> |
case 'm': /* move camera (or memstats) */ |
| 280 |
|
if (badcom("move")) |
| 281 |
+ |
#ifdef MSTATS |
| 282 |
+ |
{ |
| 283 |
+ |
if (badcom("memory")) |
| 284 |
+ |
goto commerr; |
| 285 |
+ |
printmemstats(stderr); |
| 286 |
+ |
break; |
| 287 |
+ |
} |
| 288 |
+ |
#else |
| 289 |
|
goto commerr; |
| 290 |
+ |
#endif |
| 291 |
|
getmove(args); |
| 292 |
|
break; |
| 293 |
< |
case 'r': /* rotate camera */ |
| 294 |
< |
if (badcom("rotate")) |
| 295 |
< |
goto commerr; |
| 293 |
> |
case 'r': /* rotate/repaint */ |
| 294 |
> |
if (badcom("rotate")) { |
| 295 |
> |
if (badcom("repaint")) { |
| 296 |
> |
if (badcom("redraw")) |
| 297 |
> |
goto commerr; |
| 298 |
> |
redraw(); |
| 299 |
> |
break; |
| 300 |
> |
} |
| 301 |
> |
getrepaint(args); |
| 302 |
> |
break; |
| 303 |
> |
} |
| 304 |
|
getrotate(args); |
| 305 |
|
break; |
| 306 |
|
case 'p': /* pivot view */ |
| 307 |
< |
if (badcom("pivot")) |
| 308 |
< |
goto commerr; |
| 307 |
> |
if (badcom("pivot")) { |
| 308 |
> |
if (badcom("pause")) |
| 309 |
> |
goto commerr; |
| 310 |
> |
goto again; |
| 311 |
> |
} |
| 312 |
|
getpivot(args); |
| 313 |
|
break; |
| 314 |
< |
case CTRL(R): /* redraw */ |
| 314 |
> |
case CTRL('R'): /* redraw */ |
| 315 |
|
redraw(); |
| 316 |
|
break; |
| 317 |
|
case 'w': /* write */ |
| 323 |
|
if (badcom("quit")) |
| 324 |
|
goto commerr; |
| 325 |
|
quit(0); |
| 326 |
< |
case CTRL(C): /* interrupt */ |
| 326 |
> |
case CTRL('C'): /* interrupt */ |
| 327 |
|
goto again; |
| 328 |
< |
#ifdef SIGTSTP |
| 329 |
< |
case CTRL(Z): /* stop */ |
| 328 |
> |
#ifdef SIGTSTP |
| 329 |
> |
case CTRL('Z'):; /* stop */ |
| 330 |
> |
dostop: |
| 331 |
|
devclose(); |
| 332 |
|
kill(0, SIGTSTP); |
| 333 |
|
/* pc stops here */ |
| 334 |
< |
devopen(devname); |
| 334 |
> |
devopen(dvcname); |
| 335 |
|
redraw(); |
| 336 |
|
break; |
| 337 |
|
#endif |
| 347 |
|
error(COMMAND, errmsg); |
| 348 |
|
break; |
| 349 |
|
} |
| 350 |
< |
#undef badcom |
| 350 |
> |
#undef badcom |
| 351 |
|
} |
| 352 |
|
|
| 353 |
|
|
| 354 |
+ |
void |
| 355 |
|
rsample() /* sample the image */ |
| 356 |
|
{ |
| 357 |
|
int xsiz, ysiz, y; |
| 358 |
|
RECT r; |
| 359 |
|
PNODE *p; |
| 360 |
|
register RECT *rl; |
| 361 |
< |
register PNODE **pl; |
| 361 |
> |
register PNODE **pl; |
| 362 |
|
register int x; |
| 363 |
|
/* |
| 364 |
|
* We initialize the bottom row in the image at our current |
| 365 |
< |
* resolution. During sampling, we check super-pixels to the |
| 365 |
> |
* resolution. During sampling, we check super-pixels to the |
| 366 |
|
* right and above by calling bigdiff(). If there is a significant |
| 367 |
|
* difference, we subsample the super-pixels. The testing process |
| 368 |
|
* includes initialization of the next row. |
| 369 |
|
*/ |
| 370 |
< |
xsiz = (((pframe.r-pframe.l)<<pdepth)+ourview.hresolu-1) / |
| 371 |
< |
ourview.hresolu; |
| 266 |
< |
ysiz = (((pframe.u-pframe.d)<<pdepth)+ourview.vresolu-1) / |
| 267 |
< |
ourview.vresolu; |
| 370 |
> |
xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
| 371 |
> |
ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
| 372 |
|
rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
| 373 |
+ |
if (rl == NULL) |
| 374 |
+ |
return; |
| 375 |
|
pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
| 376 |
< |
if (rl == NULL || pl == NULL) |
| 377 |
< |
error(SYSTEM, "out of memory in rsample"); |
| 376 |
> |
if (pl == NULL) { |
| 377 |
> |
free((void *)rl); |
| 378 |
> |
return; |
| 379 |
> |
} |
| 380 |
|
/* |
| 381 |
|
* Initialize the bottom row. |
| 382 |
|
*/ |
| 383 |
|
rl[0].l = rl[0].d = 0; |
| 384 |
< |
rl[0].r = ourview.hresolu; rl[0].u = ourview.vresolu; |
| 384 |
> |
rl[0].r = hresolu; rl[0].u = vresolu; |
| 385 |
|
pl[0] = findrect(pframe.l, pframe.d, &ptrunk, rl, pdepth); |
| 386 |
|
for (x = 1; x < xsiz; x++) { |
| 387 |
|
rl[x].l = rl[x].d = 0; |
| 388 |
< |
rl[x].r = ourview.hresolu; rl[x].u = ourview.vresolu; |
| 389 |
< |
pl[x] = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
| 388 |
> |
rl[x].r = hresolu; rl[x].u = vresolu; |
| 389 |
> |
pl[x] = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 390 |
|
pframe.d, &ptrunk, rl+x, pdepth); |
| 391 |
|
} |
| 392 |
|
/* sample the image */ |
| 393 |
|
for (y = 0; /* y < ysiz */ ; y++) { |
| 394 |
|
for (x = 0; x < xsiz-1; x++) { |
| 395 |
< |
if (dev->inpready) |
| 395 |
> |
if (dev->inpready || errno == ENOMEM) |
| 396 |
|
goto escape; |
| 397 |
|
/* |
| 398 |
|
* Test super-pixel to the right. |
| 408 |
|
if (y >= ysiz-1) |
| 409 |
|
break; |
| 410 |
|
for (x = 0; x < xsiz; x++) { |
| 411 |
< |
if (dev->inpready) |
| 411 |
> |
if (dev->inpready || errno == ENOMEM) |
| 412 |
|
goto escape; |
| 413 |
|
/* |
| 414 |
|
* Find super-pixel at this position in next row. |
| 415 |
|
*/ |
| 416 |
|
r.l = r.d = 0; |
| 417 |
< |
r.r = ourview.hresolu; r.u = ourview.vresolu; |
| 418 |
< |
p = findrect(pframe.l+((x*ourview.hresolu)>>pdepth), |
| 419 |
< |
pframe.d+(((y+1)*ourview.vresolu)>>pdepth), |
| 417 |
> |
r.r = hresolu; r.u = vresolu; |
| 418 |
> |
p = findrect(pframe.l+((x*hresolu)>>pdepth), |
| 419 |
> |
pframe.d+(((y+1)*vresolu)>>pdepth), |
| 420 |
|
&ptrunk, &r, pdepth); |
| 421 |
|
/* |
| 422 |
|
* Test super-pixel in next row. |
| 435 |
|
} |
| 436 |
|
} |
| 437 |
|
escape: |
| 438 |
< |
free((char *)rl); |
| 439 |
< |
free((char *)pl); |
| 438 |
> |
free((void *)rl); |
| 439 |
> |
free((void *)pl); |
| 440 |
|
} |
| 441 |
|
|
| 442 |
|
|
| 443 |
|
int |
| 444 |
|
refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
| 445 |
< |
register PNODE *p; |
| 445 |
> |
register PNODE *p; |
| 446 |
|
int xmin, ymin, xmax, ymax; |
| 447 |
|
int pd; |
| 448 |
|
{ |
| 463 |
|
if (p->kid == NULL) { /* subdivide */ |
| 464 |
|
|
| 465 |
|
if ((p->kid = newptree()) == NULL) |
| 466 |
< |
error(SYSTEM, "out of memory in refine"); |
| 466 |
> |
return(0); |
| 467 |
|
/* |
| 468 |
|
* The following paint order can leave a black pixel |
| 469 |
< |
* when redraw() is called in (*dev->paintr)(). |
| 469 |
> |
* if redraw() is called in (*dev->paintr)(). |
| 470 |
|
*/ |
| 471 |
|
if (p->x >= mx && p->y >= my) |
| 472 |
|
pcopy(p, p->kid+UR); |