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#ifndef lint |
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static const char RCSid[] = "$Id: rcmain.c,v 2.10 2013/08/07 05:10:09 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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|
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#include "copyright.h" |
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|
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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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|
| 17 |
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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|
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char *sigerr[NSIG]; /* signal error messages */ |
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|
| 24 |
int nproc = 1; /* number of processes requested */ |
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int nchild = 0; /* number of children (-1 in child) */ |
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|
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int inpfmt = 'a'; /* input format */ |
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int outfmt = 'a'; /* output format */ |
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|
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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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|
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int xres = 0; /* horizontal (scan) size */ |
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int yres = 0; /* vertical resolution */ |
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|
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int using_stdout = 0; /* are we using stdout? */ |
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|
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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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|
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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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|
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void (*addobjnotify[8])() = {ambnotify, NULL}; |
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|
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char RCCONTEXT[] = "RC"; /* our special evaluation context */ |
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|
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|
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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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|
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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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|
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if (gotsig++) /* two signals and we're gone! */ |
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_exit(signo); |
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|
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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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|
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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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|
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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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|
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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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|
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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 *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 '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, 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, 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 |
| 315 |
#ifdef SIGALRM |
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sigdie(SIGALRM, "Alarm clock"); |
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#endif |
| 318 |
#ifdef SIGXCPU |
| 319 |
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 |
| 323 |
nice(NICE); /* lower priority */ |
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#endif |
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/* get octree */ |
| 326 |
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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|
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readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
| 336 |
nsceneobjs = nobjects; |
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|
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marksources(); /* find and mark sources */ |
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|
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setambient(); /* initialize ambient calculation */ |
| 341 |
|
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rcontrib(); /* trace ray contributions (loop) */ |
| 343 |
|
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ambsync(); /* flush ambient file */ |
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|
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quit(0); /* exit clean */ |
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|
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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][-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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|
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#undef check |
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#undef bool |
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} |
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|
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|
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void |
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wputs( /* warning output function */ |
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char *s |
| 364 |
) |
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{ |
| 366 |
int lasterrno = errno; |
| 367 |
eputs(s); |
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errno = lasterrno; |
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} |
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|
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|
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void |
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eputs( /* put string to stderr */ |
| 374 |
char *s |
| 375 |
) |
| 376 |
{ |
| 377 |
static int midline = 0; |
| 378 |
|
| 379 |
if (!*s) |
| 380 |
return; |
| 381 |
if (!midline++) { |
| 382 |
fputs(progname, stderr); |
| 383 |
fputs(": ", stderr); |
| 384 |
} |
| 385 |
fputs(s, stderr); |
| 386 |
if (s[strlen(s)-1] == '\n') { |
| 387 |
fflush(stderr); |
| 388 |
midline = 0; |
| 389 |
} |
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} |
