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#ifndef lint
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static const char RCSid[] = "$Id: rcmain.c,v 2.11 2013/08/11 13:48:48 greg Exp $";
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#endif
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/*
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* rcmain.c - main for rtcontrib ray contribution tracer
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*/
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#include "copyright.h"
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#include <signal.h>
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#include <time.h>
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#include "rcontrib.h"
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#include "random.h"
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#include "source.h"
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#include "ambient.h"
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int gargc; /* global argc */
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char **gargv; /* global argv */
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char *octname; /* global octree name */
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char *progname; /* global argv[0] */
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char *sigerr[NSIG]; /* signal error messages */
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int nproc = 1; /* number of processes requested */
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int nchild = 0; /* number of children (-1 in child) */
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int inpfmt = 'a'; /* input format */
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int outfmt = 'a'; /* output format */
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int header = 1; /* output header? */
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int force_open = 0; /* truncate existing output? */
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int recover = 0; /* recover previous output? */
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int accumulate = 1; /* input rays per output record */
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int contrib = 0; /* computing contributions? */
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int xres = 0; /* horizontal (scan) size */
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int yres = 0; /* vertical resolution */
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int using_stdout = 0; /* are we using stdout? */
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int imm_irrad = 0; /* compute immediate irradiance? */
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int lim_dist = 0; /* limit distance? */
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const char *modname[MAXMODLIST]; /* ordered modifier name list */
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int nmods = 0; /* number of modifiers */
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void (*addobjnotify[8])() = {ambnotify, NULL};
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char RCCONTEXT[] = "RC"; /* our special evaluation context */
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static void
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printdefaults(void) /* print default values to stdout */
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{
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printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate);
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printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
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contrib ? "contributions" : "coefficients");
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if (imm_irrad)
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printf("-I+\t\t\t\t# immediate irradiance on\n");
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printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
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printf("-x %-9d\t\t\t# %s\n", xres,
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yres && xres ? "x resolution" : "flush interval");
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printf("-y %-9d\t\t\t# y resolution\n", yres);
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printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
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"-ld-\t\t\t\t# limit distance off\n");
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printf("-h%c\t\t\t\t# %s header\n", header ? '+' : '-',
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header ? "output" : "no");
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printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
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inpfmt, outfmt, formstr(inpfmt), formstr(outfmt));
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printf(erract[WARNING].pf != NULL ?
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"-w+\t\t\t\t# warning messages on\n" :
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"-w-\t\t\t\t# warning messages off\n");
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print_rdefaults();
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}
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static void
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onsig( /* fatal signal */
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int signo
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)
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{
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static int gotsig = 0;
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if (gotsig++) /* two signals and we're gone! */
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_exit(signo);
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#ifdef SIGALRM
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alarm(15); /* allow 15 seconds to clean up */
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signal(SIGALRM, SIG_DFL); /* make certain we do die */
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#endif
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eputs("signal - ");
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eputs(sigerr[signo]);
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eputs("\n");
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quit(3);
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}
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static void
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sigdie( /* set fatal signal */
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int signo,
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char *msg
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)
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{
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if (signal(signo, onsig) == SIG_IGN)
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signal(signo, SIG_IGN);
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sigerr[signo] = msg;
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}
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/* set input/output format */
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static void
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setformat(const char *fmt)
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{
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switch (fmt[0]) {
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case 'f':
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case 'd':
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SET_FILE_BINARY(stdin);
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/* fall through */
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case 'a':
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inpfmt = fmt[0];
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break;
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default:
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goto fmterr;
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}
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switch (fmt[1]) {
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case '\0':
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outfmt = inpfmt;
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return;
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case 'a':
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case 'f':
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case 'd':
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case 'c':
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outfmt = fmt[1];
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break;
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default:
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goto fmterr;
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}
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if (!fmt[2])
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return;
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fmterr:
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sprintf(errmsg, "Illegal i/o format: -f%s", fmt);
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error(USER, errmsg);
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}
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/* Set overriding options */
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static void
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override_options(void)
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{
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shadthresh = 0;
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ambssamp = 0;
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ambacc = 0;
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if (accumulate <= 0) /* no output flushing for single record */
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xres = yres = 0;
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}
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int
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main(int argc, char *argv[])
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{
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#define check(ol,al) if (argv[i][ol] || \
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badarg(argc-i-1,argv+i+1,al)) \
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goto badopt
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#define bool(olen,var) switch (argv[i][olen]) { \
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case '\0': var = !var; break; \
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case 'y': case 'Y': case 't': case 'T': \
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case '+': case '1': var = 1; break; \
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case 'n': case 'N': case 'f': case 'F': \
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case '-': case '0': var = 0; break; \
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default: goto badopt; }
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char *curout = NULL;
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char *prms = NULL;
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char *binval = NULL;
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int bincnt = 0;
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int rval;
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int i;
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/* global program name */
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progname = argv[0] = fixargv0(argv[0]);
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gargv = argv;
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gargc = argc;
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/* initialize calcomp routines early */
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initfunc();
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setcontext(RCCONTEXT);
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/* option city */
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for (i = 1; i < argc; i++) {
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/* expand arguments */
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while ((rval = expandarg(&argc, &argv, i)) > 0)
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;
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if (rval < 0) {
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sprintf(errmsg, "cannot expand '%s'", argv[i]);
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error(SYSTEM, errmsg);
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}
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if (argv[i] == NULL || argv[i][0] != '-')
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break; /* break from options */
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if (!strcmp(argv[i], "-version")) {
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puts(VersionID);
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quit(0);
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}
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if (!strcmp(argv[i], "-defaults") ||
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!strcmp(argv[i], "-help")) {
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override_options();
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printdefaults();
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quit(0);
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}
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rval = getrenderopt(argc-i, argv+i);
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if (rval >= 0) {
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i += rval;
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continue;
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}
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switch (argv[i][1]) {
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case 'n': /* number of cores */
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check(2,"i");
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nproc = atoi(argv[++i]);
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if (nproc <= 0)
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error(USER, "bad number of processes");
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break;
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case 'V': /* output contributions */
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bool(2,contrib);
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break;
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case 'x': /* x resolution */
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check(2,"i");
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xres = atoi(argv[++i]);
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break;
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case 'y': /* y resolution */
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check(2,"i");
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yres = atoi(argv[++i]);
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break;
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case 'w': /* warnings */
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rval = (erract[WARNING].pf != NULL);
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bool(2,rval);
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if (rval) erract[WARNING].pf = wputs;
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else erract[WARNING].pf = NULL;
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break;
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case 'e': /* expression */
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check(2,"s");
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scompile(argv[++i], NULL, 0);
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break;
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case 'l': /* limit distance */
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if (argv[i][2] != 'd')
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goto badopt;
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bool(3,lim_dist);
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break;
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case 'I': /* immed. irradiance */
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bool(2,imm_irrad);
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break;
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case 'f': /* file or force or format */
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if (!argv[i][2]) {
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check(2,"s");
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loadfunc(argv[++i]);
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break;
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}
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if (argv[i][2] == 'o') {
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bool(3,force_open);
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break;
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}
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setformat(argv[i]+2);
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break;
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case 'o': /* output */
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check(2,"s");
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curout = argv[++i];
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break;
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case 'c': /* input rays per output */
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check(2,"i");
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accumulate = atoi(argv[++i]);
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break;
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case 'r': /* recover output */
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bool(2,recover);
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break;
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case 'h': /* header output */
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bool(2,header);
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break;
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case 'p': /* parameter setting(s) */
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check(2,"s");
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prms = argv[++i];
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break;
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case 'b': /* bin expression/count */
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if (argv[i][2] == 'n') {
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check(3,"s");
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bincnt = (int)(eval(argv[++i]) + .5);
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break;
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}
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check(2,"s");
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binval = argv[++i];
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break;
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case 'm': /* modifier name */
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check(2,"s");
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addmodifier(argv[++i], curout, prms, binval, bincnt);
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break;
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case 'M': /* modifier file */
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check(2,"s");
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addmodfile(argv[++i], curout, prms, binval, bincnt);
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break;
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default:
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goto badopt;
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}
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}
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if (nmods <= 0)
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error(USER, "missing required modifier argument");
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/* override some option settings */
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override_options();
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/* initialize object types */
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initotypes();
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/* initialize urand */
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if (rand_samp) {
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srandom((long)time(0));
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initurand(0);
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} else {
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srandom(0L);
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initurand(2048);
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}
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/* set up signal handling */
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sigdie(SIGINT, "Interrupt");
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#ifdef SIGHUP
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sigdie(SIGHUP, "Hangup");
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#endif
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sigdie(SIGTERM, "Terminate");
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#ifdef SIGPIPE
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sigdie(SIGPIPE, "Broken pipe");
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#endif
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#ifdef SIGALRM
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sigdie(SIGALRM, "Alarm clock");
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#endif
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#ifdef SIGXCPU
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sigdie(SIGXCPU, "CPU limit exceeded");
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sigdie(SIGXFSZ, "File size exceeded");
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#endif
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#ifdef NICE
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nice(NICE); /* lower priority */
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#endif
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/* get octree */
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if (i == argc)
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octname = NULL;
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else if (i == argc-1)
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octname = argv[i];
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else
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goto badopt;
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if (octname == NULL)
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error(USER, "missing octree argument");
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readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL);
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nsceneobjs = nobjects;
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marksources(); /* find and mark sources */
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setambient(); /* initialize ambient calculation */
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rcontrib(); /* trace ray contributions (loop) */
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ambsync(); /* flush ambient file */
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quit(0); /* exit clean */
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badopt:
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fprintf(stderr,
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"Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n",
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progname);
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sprintf(errmsg, "command line error at '%s'", argv[i]);
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error(USER, errmsg);
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return(1); /* pro forma return */
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#undef check
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#undef bool
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}
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void
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| 367 |
wputs( /* warning output function */
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| 368 |
char *s
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| 369 |
)
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| 370 |
{
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| 371 |
int lasterrno = errno;
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eputs(s);
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errno = lasterrno;
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}
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| 375 |
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| 376 |
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| 377 |
void
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| 378 |
eputs( /* put string to stderr */
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| 379 |
char *s
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| 380 |
)
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| 381 |
{
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| 382 |
static int midline = 0;
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| 383 |
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| 384 |
if (!*s)
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| 385 |
return;
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| 386 |
if (!midline++) {
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| 387 |
fputs(progname, stderr);
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| 388 |
fputs(": ", stderr);
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| 389 |
}
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| 390 |
fputs(s, stderr);
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| 391 |
if (s[strlen(s)-1] == '\n') {
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| 392 |
fflush(stderr);
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| 393 |
midline = 0;
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| 394 |
}
|
| 395 |
}
|
