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#ifndef lint |
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static const char RCSid[] = "$Id: rvmain.c,v 2.6 2005/06/21 00:26:44 greg Exp $"; |
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#endif |
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/* |
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* rvmain.c - main for rview interactive viewer |
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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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|
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#include "platform.h" |
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#include "ray.h" |
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#include "source.h" |
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#include "ambient.h" |
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#include "rpaint.h" |
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#include "random.h" |
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#include "paths.h" |
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#include "view.h" |
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|
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char *progname; /* argv[0] */ |
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|
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char *octname; /* octree name */ |
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|
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char *sigerr[NSIG]; /* signal error messages */ |
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|
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char *shm_boundary = NULL; /* boundary of shared memory */ |
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|
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char *errfile = NULL; /* error output file */ |
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|
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extern int greyscale; /* map colors to brightness? */ |
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extern char *dvcname; /* output device name */ |
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extern double exposure; /* exposure compensation */ |
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|
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extern VIEW ourview; /* viewing parameters */ |
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|
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extern char rifname[]; /* rad input file name */ |
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|
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extern int hresolu; /* horizontal resolution */ |
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extern int vresolu; /* vertical resolution */ |
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|
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extern int psample; /* pixel sample size */ |
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extern double maxdiff; /* max. sample difference */ |
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|
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static void onsig(int signo); |
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static void sigdie(int signo, char *msg); |
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static void printdefaults(void); |
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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 *err; |
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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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/* 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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printdefaults(); |
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quit(0); |
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} |
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if (!strcmp(argv[i], "-devices")) { |
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printdevices(); |
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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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rval = getviewopt(&ourview, 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 'v': /* view file */ |
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if (argv[i][2] != 'f') |
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goto badopt; |
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check(3,"s"); |
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rval = viewfile(argv[++i], &ourview, NULL); |
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if (rval < 0) { |
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sprintf(errmsg, |
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"cannot open view file \"%s\"", |
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argv[i]); |
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error(SYSTEM, errmsg); |
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} else if (rval == 0) { |
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sprintf(errmsg, |
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"bad view file \"%s\"", |
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argv[i]); |
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error(USER, errmsg); |
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} |
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break; |
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case 'b': /* grayscale */ |
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bool(2,greyscale); |
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break; |
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case 'p': /* pixel */ |
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switch (argv[i][2]) { |
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case 's': /* sample */ |
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check(3,"i"); |
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psample = atoi(argv[++i]); |
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break; |
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case 't': /* threshold */ |
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check(3,"f"); |
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maxdiff = atof(argv[++i]); |
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break; |
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case 'e': /* exposure */ |
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check(3,"f"); |
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exposure = atof(argv[++i]); |
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if (argv[i][0] == '+' || argv[i][0] == '-') |
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exposure = pow(2.0, exposure); |
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break; |
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default: |
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goto badopt; |
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} |
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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': /* error file */ |
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check(2,"s"); |
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errfile = argv[++i]; |
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break; |
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case 'o': /* output device */ |
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check(2,"s"); |
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dvcname = argv[++i]; |
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break; |
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case 'R': /* render input file */ |
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check(2,"s"); |
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strcpy(rifname, argv[++i]); |
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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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err = setview(&ourview); /* set viewing parameters */ |
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if (err != NULL) |
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error(USER, err); |
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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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sigdie(SIGHUP, "Hangup"); |
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sigdie(SIGTERM, "Terminate"); |
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sigdie(SIGPIPE, "Broken pipe"); |
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sigdie(SIGALRM, "Alarm clock"); |
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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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/* open error file */ |
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if (errfile != NULL) { |
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if (freopen(errfile, "a", stderr) == NULL) |
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quit(2); |
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fprintf(stderr, "**************\n*** PID %5d: ", |
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getpid()); |
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printargs(argc, argv, stderr); |
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putc('\n', stderr); |
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fflush(stderr); |
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} |
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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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/* set up output */ |
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SET_FILE_BINARY(stdout); |
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readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
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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 */ |
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|
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rview(); /* run interactive viewer */ |
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|
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ambsync(); /* flush ambient file */ |
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|
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quit(0); |
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|
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badopt: |
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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 |
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) |
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{ |
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int lasterrno = errno; |
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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 */ |
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register char *s |
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) |
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{ |
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static int midline = 0; |
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|
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if (!*s) |
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return; |
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if (!midline++) { |
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fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
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fputs(s, stderr); |
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if (s[strlen(s)-1] == '\n') { |
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fflush(stderr); |
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midline = 0; |
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} |
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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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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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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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static void |
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printdefaults(void) /* print default values to stdout */ |
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{ |
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printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" : |
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"-b-\t\t\t\t# greyscale off\n"); |
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printf("-vt%c\t\t\t\t# view type %s\n", ourview.type, |
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ourview.type==VT_PER ? "perspective" : |
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ourview.type==VT_PAR ? "parallel" : |
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ourview.type==VT_HEM ? "hemispherical" : |
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ourview.type==VT_ANG ? "angular" : |
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ourview.type==VT_CYL ? "cylindrical" : |
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"unknown"); |
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printf("-vp %f %f %f\t# view point\n", |
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ourview.vp[0], ourview.vp[1], ourview.vp[2]); |
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printf("-vd %f %f %f\t# view direction\n", |
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ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); |
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printf("-vu %f %f %f\t# view up\n", |
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ourview.vup[0], ourview.vup[1], ourview.vup[2]); |
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printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz); |
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printf("-vv %f\t\t\t# view vertical size\n", ourview.vert); |
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printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore); |
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printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft); |
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printf("-vs %f\t\t\t# view shift\n", ourview.hoff); |
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printf("-vl %f\t\t\t# view lift\n", ourview.voff); |
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printf("-pe %f\t\t\t# pixel exposure\n", exposure); |
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printf("-ps %-9d\t\t\t# pixel sample\n", psample); |
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printf("-pt %f\t\t\t# pixel threshold\n", maxdiff); |
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printf("-o %s\t\t\t\t# output device\n", dvcname); |
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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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} |
