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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* Make illum sources for optimizing rendering process |
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*/ |
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|
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#include "mkillum.h" |
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|
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#include <ctype.h> |
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|
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/* default parameters */ |
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#define SAMPDENS 128 /* points per projected steradian */ |
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#define NSAMPS 32 /* samples per point */ |
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#define DFLMAT "illum_mat" /* material name */ |
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/* selection options */ |
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#define S_NONE 0 /* select none */ |
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#define S_ELEM 1 /* select specified element */ |
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#define S_COMPL 2 /* select all but element */ |
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#define S_ALL 3 /* select all */ |
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|
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/* rtrace command and defaults */ |
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char *rtargv[64] = { "rtrace", "-dj", ".25", "-dr", "3", "-ab", "2", |
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"-ad", "256", "-as", "128", "-aa", ".15" }; |
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int rtargc = 13; |
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/* overriding rtrace options */ |
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char *myrtopts[] = { "-I-", "-i-", "-di+", "-ov", "-h-", "-fff", NULL }; |
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|
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struct rtproc rt; /* our rtrace process */ |
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|
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struct illum_args thisillum = { /* our illum and default values */ |
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0, |
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DFLMAT, |
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DFLMAT, |
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0, |
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VOIDID, |
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NSAMPS, |
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}; |
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|
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int sampdens = SAMPDENS; /* sample point density */ |
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char matcheck[MAXSTR]; /* current material to include or exclude */ |
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int matselect = S_ALL; /* selection criterion */ |
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|
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FUN ofun[NUMOTYPE] = INIT_OTYPE; /* object types */ |
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|
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int gargc; /* global argc */ |
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char **gargv; /* global argv */ |
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#define progname gargv[0] |
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|
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int doneheader = 0; /* printed header yet? */ |
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#define checkhead() if (!doneheader++) printhead(gargc,gargv) |
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|
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int warnings = 1; /* print warnings? */ |
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|
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extern char *fgetline(), *fgetword(), *sskip(), |
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*atos(), *iskip(), *fskip(); |
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extern FILE *popen(); |
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|
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|
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main(argc, argv) /* compute illum distributions using rtrace */ |
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int argc; |
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char *argv[]; |
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{ |
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extern char *getenv(), *getpath(); |
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char *rtpath; |
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register int i; |
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/* set global arguments */ |
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gargc = argc; gargv = argv; |
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/* set up rtrace command */ |
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if (argc < 2) |
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error(USER, "too few arguments"); |
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for (i = 1; i < argc-1; i++) { |
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rtargv[rtargc++] = argv[i]; |
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if (argv[i][0] == '-' && argv[i][1] == 'w') |
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warnings = !warnings; |
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} |
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for (i = 0; myrtopts[i] != NULL; i++) |
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rtargv[rtargc++] = myrtopts[i]; |
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rtargv[rtargc++] = argv[argc-1]; |
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rtargv[rtargc] = NULL; |
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/* just asking for defaults? */ |
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if (!strcmp(argv[argc-1], "-defaults")) { |
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rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
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if (rtpath == NULL) { |
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eputs(rtargv[0]); |
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eputs(": command not found\n"); |
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exit(1); |
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} |
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execv(rtpath, rtargv); |
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perror(rtpath); |
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exit(1); |
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} |
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/* else initialize and run our calculation */ |
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init(); |
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filter(stdin, "standard input"); |
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quit(0); |
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} |
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|
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|
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init() /* start rtrace and set up buffers */ |
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{ |
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int maxbytes; |
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|
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maxbytes = open_process(rt.pd, rtargv); |
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if (maxbytes == 0) { |
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eputs(rtargv[0]); |
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eputs(": command not found\n"); |
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exit(1); |
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} |
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if (maxbytes < 0) |
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error(SYSTEM, "cannot start rtrace process"); |
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rt.bsiz = maxbytes/(6*sizeof(float)); |
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rt.buf = (float *)malloc(rt.bsiz*(6*sizeof(float))); |
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if (rt.buf == NULL) |
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error(SYSTEM, "out of memory in init"); |
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rt.bsiz--; /* allow for flush ray */ |
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rt.nrays = 0; |
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} |
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|
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|
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quit(status) /* exit with status */ |
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int status; |
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{ |
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int rtstat; |
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|
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rtstat = close_process(rt.pd); |
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if (status == 0) |
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if (rtstat < 0) |
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error(WARNING, |
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"unknown return status from rtrace process"); |
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else |
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status = rtstat; |
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exit(status); |
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} |
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|
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|
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eputs(s) /* put string to stderr */ |
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register char *s; |
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{ |
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static int midline = 0; |
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|
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if (!*s) 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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midline = s[strlen(s)-1] != '\n'; |
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} |
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|
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|
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wputs(s) /* print warning if enabled */ |
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char *s; |
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{ |
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if (warnings) |
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eputs(s); |
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} |
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|
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|
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filter(infp, name) /* process stream */ |
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register FILE *infp; |
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char *name; |
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{ |
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char buf[512]; |
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FILE *pfp; |
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register int c; |
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|
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while ((c = getc(infp)) != EOF) { |
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if (isspace(c)) |
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continue; |
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if (c == '#') { /* comment/options */ |
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buf[0] = c; |
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fgets(buf+1, sizeof(buf)-1, infp); |
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xoptions(buf, name); |
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} else if (c == '!') { /* command */ |
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buf[0] = c; |
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fgetline(buf+1, sizeof(buf)-1, infp); |
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if ((pfp = popen(buf+1, "r")) == NULL) { |
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sprintf(errmsg, "cannot execute \"%s\"", buf); |
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error(SYSTEM, errmsg); |
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} |
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filter(pfp, buf); |
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pclose(pfp); |
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} else { /* object */ |
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ungetc(c, infp); |
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xobject(infp, name); |
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} |
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} |
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} |
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|
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|
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xoptions(s, nm) /* process options in string s */ |
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char *s; |
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char *nm; |
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{ |
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extern FILE *freopen(); |
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char buf[64]; |
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int nerrs = 0; |
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register char *cp; |
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|
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if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) { |
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fputs(s, stdout); /* not for us */ |
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return; |
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} |
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cp = s+10; |
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while (*cp) { |
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switch (*cp) { |
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case ' ': |
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case '\t': |
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case '\n': |
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cp++; |
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continue; |
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case 'm': /* material name */ |
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if (*++cp != '=') |
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break; |
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if (!*++cp) |
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break; |
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atos(thisillum.matname, MAXSTR, cp); |
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cp = sskip(cp); |
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if (!(thisillum.flags & IL_DATCLB)) { |
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strcpy(thisillum.datafile, thisillum.matname); |
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thisillum.dfnum = 0; |
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} |
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continue; |
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case 'f': /* data file name */ |
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if (*++cp != '=') |
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break; |
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if (!*++cp) { |
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thisillum.flags &= ~IL_DATCLB; |
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continue; |
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} |
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atos(thisillum.datafile, MAXSTR, cp); |
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cp = sskip(cp); |
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thisillum.dfnum = 0; |
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thisillum.flags |= IL_DATCLB; |
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continue; |
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case 'i': /* include material */ |
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case 'e': /* exclude material */ |
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matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
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if (*++cp != '=') |
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break; |
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atos(matcheck, MAXSTR, ++cp); |
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cp = sskip(cp); |
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continue; |
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case 'a': /* use everything */ |
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cp = sskip(cp); |
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matselect = S_ALL; |
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continue; |
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case 'n': /* use nothing (passive) */ |
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cp = sskip(cp); |
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matselect = S_NONE; |
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continue; |
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case 'c': /* color calculation */ |
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if (*++cp != '=') |
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break; |
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switch (*++cp) { |
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case 'a': /* average */ |
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thisillum.flags |= IL_COLAVG; |
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thisillum.flags &= ~IL_COLDST; |
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break; |
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case 'd': /* distribution */ |
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thisillum.flags |= IL_COLDST; |
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thisillum.flags &= ~IL_COLAVG; |
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break; |
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case 'n': /* none */ |
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thisillum.flags &= ~(IL_COLAVG|IL_COLDST); |
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break; |
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default: |
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goto opterr; |
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} |
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cp = sskip(cp); |
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continue; |
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case 'd': /* point sample density */ |
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if (*++cp != '=') |
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break; |
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if (!isintd(++cp, " \t\n")) |
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break; |
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sampdens = atoi(cp); |
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cp = sskip(cp); |
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continue; |
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case 's': /* point super-samples */ |
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if (*++cp != '=') |
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break; |
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if (!isintd(++cp, " \t\n")) |
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break; |
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thisillum.nsamps = atoi(cp); |
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cp = sskip(cp); |
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continue; |
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case 'o': /* output file */ |
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if (*++cp != '=') |
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break; |
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if (!*++cp) |
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break; |
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atos(buf, sizeof(buf), cp); |
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cp = sskip(cp); |
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if (freopen(buf, "w", stdout) == NULL) { |
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sprintf(errmsg, |
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"cannot open output file \"%s\"", buf); |
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error(SYSTEM, errmsg); |
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} |
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doneheader = 0; |
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continue; |
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} |
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opterr: /* skip faulty option */ |
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cp = sskip(cp); |
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nerrs++; |
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} |
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/* print header? */ |
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checkhead(); |
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/* issue warnings? */ |
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if (nerrs) { |
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sprintf(errmsg, "(%s): %d error(s) in option line:", |
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nm, nerrs); |
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error(WARNING, errmsg); |
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wputs(s); |
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printf("# %s: the following option line has %d error(s):\n", |
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progname, nerrs); |
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} |
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/* print pure comment */ |
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putchar('#'); putchar(' '); fputs(s+2, stdout); |
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} |
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|
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|
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printhead(ac, av) /* print out header */ |
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register int ac; |
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register char **av; |
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{ |
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putchar('#'); |
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while (ac-- > 0) { |
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putchar(' '); |
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fputs(*av++, stdout); |
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} |
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putchar('\n'); |
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} |
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|
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|
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xobject(fp, nm) /* translate an object from fp */ |
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FILE *fp; |
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char *nm; |
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{ |
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OBJREC thisobj; |
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char str[MAXSTR]; |
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int doit; |
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/* read the object */ |
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if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL) |
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goto readerr; |
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if (fgetword(str, MAXSTR, fp) == NULL) |
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goto readerr; |
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/* is it an alias? */ |
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if (!strcmp(str, ALIASID)) { |
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if (fgetword(str, MAXSTR, fp) == NULL) |
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goto readerr; |
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printf("\n%s %s %s", thisillum.altmat, ALIASID, str); |
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if (fgetword(str, MAXSTR, fp) == NULL) |
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goto readerr; |
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printf(" %s\n", str); |
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return; |
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} |
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thisobj.omod = OVOID; |
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if ((thisobj.otype = otype(str)) < 0) { |
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sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str); |
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error(USER, errmsg); |
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} |
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if (fgetword(str, MAXSTR, fp) == NULL) |
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goto readerr; |
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thisobj.oname = str; |
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if (readfargs(&thisobj.oargs, fp) != 1) |
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goto readerr; |
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thisobj.os = NULL; |
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/* check for translation */ |
| 374 |
switch (matselect) { |
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case S_NONE: |
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doit = 0; |
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break; |
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case S_ALL: |
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doit = issurface(thisobj.otype); |
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break; |
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case S_ELEM: |
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doit = !strcmp(thisillum.altmat, matcheck); |
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break; |
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case S_COMPL: |
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doit = strcmp(thisillum.altmat, matcheck); |
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break; |
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} |
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if (doit) /* make sure we can do it */ |
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switch (thisobj.otype) { |
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case OBJ_SPHERE: |
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case OBJ_FACE: |
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case OBJ_RING: |
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break; |
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default: |
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sprintf(errmsg, |
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"(%s): cannot make illum for %s \"%s\"", |
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nm, ofun[thisobj.otype].funame, |
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thisobj.oname); |
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error(WARNING, errmsg); |
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doit = 0; |
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break; |
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} |
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/* print header? */ |
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checkhead(); |
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/* process object */ |
| 406 |
if (doit) |
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mkillum(&thisobj, &thisillum, &rt); |
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else |
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printobj(thisillum.altmat, &thisobj); |
| 410 |
/* free arguments */ |
| 411 |
freefargs(&thisobj.oargs); |
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return; |
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readerr: |
| 414 |
sprintf(errmsg, "(%s): error reading scene", nm); |
| 415 |
error(USER, errmsg); |
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} |
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|
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|
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int |
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otype(ofname) /* get object function number from its name */ |
| 421 |
char *ofname; |
| 422 |
{ |
| 423 |
register int i; |
| 424 |
|
| 425 |
for (i = 0; i < NUMOTYPE; i++) |
| 426 |
if (!strcmp(ofun[i].funame, ofname)) |
| 427 |
return(i); |
| 428 |
|
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return(-1); /* not found */ |
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} |
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|
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|
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o_default() {} |
