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rvmain.c
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Wed, Jul 10, 08:43

rvmain.c
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#ifndef lint
static const char RCSid[] = "$Id: rvmain.c,v 2.17 2016/08/18 00:52:48 greg Exp $";
#endif
/*
* rvmain.c - main for rview interactive viewer
*/
#include "copyright.h"
#include <signal.h>
#include <time.h>
#include "platform.h"
#include "ray.h"
#include "source.h"
#include "ambient.h"
#include "rpaint.h"
#include "random.h"
#include "paths.h"
#include "view.h"
#include "pmapray.h"
extern char *progname; /* global argv[0] */
VIEW ourview = STDVIEW; /* viewing parameters */
int hresolu, vresolu; /* image resolution */
int psample = 8; /* pixel sample size */
double maxdiff = .15; /* max. sample difference */
int greyscale = 0; /* map colors to brightness? */
char *dvcname = dev_default; /* output device name */
double exposure = 1.0; /* exposure for scene */
int newparam = 1; /* parameter setting changed */
struct driver *dev = NULL; /* driver functions */
char rifname[128]; /* rad input file name */
VIEW oldview; /* previous view parameters */
PNODE ptrunk; /* the base of our image */
RECT pframe; /* current frame boundaries */
int pdepth; /* image depth in current frame */
char *errfile = NULL; /* error output file */
int nproc = 1; /* number of processes */
char *sigerr[NSIG]; /* signal error messages */
static void onsig(int signo);
static void sigdie(int signo, char *msg);
static void printdefaults(void);
int
main(int argc, char *argv[])
{
#define check(ol,al) if (argv[i][ol] || \
badarg(argc-i-1,argv+i+1,al)) \
goto badopt
#define check_bool(olen,var) switch (argv[i][olen]) { \
case '\0': var = !var; break; \
case 'y': case 'Y': case 't': case 'T': \
case '+': case '1': var = 1; break; \
case 'n': case 'N': case 'f': case 'F': \
case '-': case '0': var = 0; break; \
default: goto badopt; }
char *octnm = NULL;
char *err;
int rval;
int i;
/* global program name */
progname = argv[0] = fixargv0(argv[0]);
/* set our defaults */
shadthresh = .1;
shadcert = .25;
directrelay = 0;
vspretest = 128;
srcsizerat = 0.;
specthresh = .3;
specjitter = 1.;
maxdepth = 6;
minweight = 1e-2;
ambacc = 0.3;
ambres = 32;
ambdiv = 256;
ambssamp = 64;
/* option city */
for (i = 1; i < argc; i++) {
/* expand arguments */
while ((rval = expandarg(&argc, &argv, i)) > 0)
;
if (rval < 0) {
sprintf(errmsg, "cannot expand '%s'", argv[i]);
error(SYSTEM, errmsg);
}
if (argv[i] == NULL || argv[i][0] != '-')
break; /* break from options */
if (!strcmp(argv[i], "-version")) {
puts(VersionID);
quit(0);
}
if (!strcmp(argv[i], "-defaults") ||
!strcmp(argv[i], "-help")) {
printdefaults();
quit(0);
}
if (!strcmp(argv[i], "-devices")) {
printdevices();
quit(0);
}
rval = getrenderopt(argc-i, argv+i);
if (rval >= 0) {
i += rval;
continue;
}
rval = getviewopt(&ourview, argc-i, argv+i);
if (rval >= 0) {
i += rval;
continue;
}
switch (argv[i][1]) {
case 'n': /* # processes */
check(2,"i");
nproc = atoi(argv[++i]);
if (nproc <= 0)
error(USER, "bad number of processes");
break;
case 'v': /* view file */
if (argv[i][2] != 'f')
goto badopt;
check(3,"s");
rval = viewfile(argv[++i], &ourview, NULL);
if (rval < 0) {
sprintf(errmsg,
"cannot open view file \"%s\"",
argv[i]);
error(SYSTEM, errmsg);
} else if (rval == 0) {
sprintf(errmsg,
"bad view file \"%s\"",
argv[i]);
error(USER, errmsg);
}
break;
case 'b': /* grayscale */
check_bool(2,greyscale);
break;
case 'p': /* pixel */
switch (argv[i][2]) {
case 's': /* sample */
check(3,"i");
psample = atoi(argv[++i]);
break;
case 't': /* threshold */
check(3,"f");
maxdiff = atof(argv[++i]);
break;
case 'e': /* exposure */
check(3,"f");
exposure = atof(argv[++i]);
if (argv[i][0] == '+' || argv[i][0] == '-')
exposure = pow(2.0, exposure);
break;
default:
goto badopt;
}
break;
case 'w': /* warnings */
rval = erract[WARNING].pf != NULL;
check_bool(2,rval);
if (rval) erract[WARNING].pf = wputs;
else erract[WARNING].pf = NULL;
break;
case 'e': /* error file */
check(2,"s");
errfile = argv[++i];
break;
case 'o': /* output device */
check(2,"s");
dvcname = argv[++i];
break;
case 'R': /* render input file */
check(2,"s");
strcpy(rifname, argv[++i]);
break;
default:
goto badopt;
}
}
err = setview(&ourview); /* set viewing parameters */
if (err != NULL)
error(USER, err);
/* set up signal handling */
sigdie(SIGINT, "Interrupt");
sigdie(SIGTERM, "Terminate");
#if !defined(_WIN32) && !defined(_WIN64)
sigdie(SIGHUP, "Hangup");
sigdie(SIGPIPE, "Broken pipe");
sigdie(SIGALRM, "Alarm clock");
#endif
/* open error file */
if (errfile != NULL) {
if (freopen(errfile, "a", stderr) == NULL)
quit(2);
fprintf(stderr, "**************\n*** PID %5d: ",
getpid());
printargs(argc, argv, stderr);
putc('\n', stderr);
fflush(stderr);
}
#ifdef NICE
nice(NICE); /* lower priority */
#endif
/* get octree */
if (i == argc)
octnm = NULL;
else if (i == argc-1)
octnm = argv[i];
else
goto badopt;
if (octnm == NULL)
error(USER, "missing octree argument");
/* set up output & start process(es) */
SET_FILE_BINARY(stdout);
ray_init(octnm); /* also calls ray_init_pmap() */
/* temporary shortcut, until winrview is refactored into a "device" */
#ifndef WIN_RVIEW
rview(); /* run interactive viewer */
devclose(); /* close output device */
#endif
/* PMAP: free photon maps */
ray_done_pmap();
#ifdef WIN_RVIEW
return 1;
#endif
quit(0);
badopt:
sprintf(errmsg, "command line error at '%s'", argv[i]);
error(USER, errmsg);
return 1; /* pro forma return */
#undef check
#undef check_bool
}
void
wputs( /* warning output function */
char *s
)
{
int lasterrno = errno;
eputs(s);
errno = lasterrno;
}
void
eputs( /* put string to stderr */
char *s
)
{
static int midline = 0;
if (!*s)
return;
if (!midline++) {
fputs(progname, stderr);
fputs(": ", stderr);
}
fputs(s, stderr);
if (s[strlen(s)-1] == '\n') {
fflush(stderr);
midline = 0;
}
}
static void
onsig( /* fatal signal */
int signo
)
{
static int gotsig = 0;
if (gotsig++) /* two signals and we're gone! */
_exit(signo);
#if !defined(_WIN32) && !defined(_WIN64)
alarm(15); /* allow 15 seconds to clean up */
signal(SIGALRM, SIG_DFL); /* make certain we do die */
#endif
eputs("signal - ");
eputs(sigerr[signo]);
eputs("\n");
devclose();
quit(3);
}
static void
sigdie( /* set fatal signal */
int signo,
char *msg
)
{
if (signal(signo, onsig) == SIG_IGN)
signal(signo, SIG_IGN);
sigerr[signo] = msg;
}
static void
printdefaults(void) /* print default values to stdout */
{
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
"-b-\t\t\t\t# greyscale off\n");
printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
ourview.type==VT_PER ? "perspective" :
ourview.type==VT_PAR ? "parallel" :
ourview.type==VT_HEM ? "hemispherical" :
ourview.type==VT_ANG ? "angular" :
ourview.type==VT_CYL ? "cylindrical" :
ourview.type==VT_PLS ? "planisphere" :
"unknown");
printf("-vp %f %f %f\t# view point\n",
ourview.vp[0], ourview.vp[1], ourview.vp[2]);
printf("-vd %f %f %f\t# view direction\n",
ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
printf("-vu %f %f %f\t# view up\n",
ourview.vup[0], ourview.vup[1], ourview.vup[2]);
printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore);
printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft);
printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
printf("-vl %f\t\t\t# view lift\n", ourview.voff);
printf("-pe %f\t\t\t# pixel exposure\n", exposure);
printf("-ps %-9d\t\t\t# pixel sample\n", psample);
printf("-pt %f\t\t\t# pixel threshold\n", maxdiff);
printf("-o %s\t\t\t\t# output device\n", dvcname);
printf(erract[WARNING].pf != NULL ?
"-w+\t\t\t\t# warning messages on\n" :
"-w-\t\t\t\t# warning messages off\n");
print_rdefaults();
}

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