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/* Copyright (c) 1991 Regents of the University of California */
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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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* Make illum sources for optimizing rendering process
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*/
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#include "mkillum.h"
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#include <signal.h>
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#include <ctype.h>
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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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/* rtrace command and defaults */
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char *rtargv[64] = { "rtrace", "-dj", ".25", "-dr", "3", "-di+",
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"-ab", "2", "-ad", "256", "-as", "128", "-aa", ".15", };
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int rtargc = 14;
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/* overriding rtrace options */
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char *myrtopts[] = { "-I-", "-i-", "-ov", "-h-", "-fff", NULL };
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struct rtproc rt; /* our rtrace process */
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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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SAMPDENS,
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NSAMPS,
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};
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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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FUN ofun[NUMOTYPE] = INIT_OTYPE; /* object types */
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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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int doneheader = 0; /* printed header yet? */
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#define checkhead() if (!doneheader++) printhead(gargc,gargv)
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int warnings = 1; /* print warnings? */
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extern char *fgetline(), *fgetword(), *sskip(),
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*atos(), *iskip(), *fskip(), *strcpy();
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extern FILE *popen();
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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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FILE *fp;
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register int i;
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/* set global arguments */
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gargv = argv;
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/* set up rtrace command */
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for (i = 1; i < argc; i++) {
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if (argv[i][0] == '<' && !argv[i][1])
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break;
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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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if ((gargc = i) < 2)
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error(USER, "too few arguments");
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rtargc--;
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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[gargc-1];
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rtargv[rtargc] = NULL;
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/* just asking for defaults? */
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if (!strcmp(argv[gargc-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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if (gargc+1 < argc)
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for (i = gargc+1; i < argc; i++) {
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if ((fp = fopen(argv[i], "r")) == NULL) {
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sprintf(errmsg,
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"cannot open scene file \"%s\"", argv[i]);
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error(SYSTEM, errmsg);
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}
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filter(fp, argv[i]);
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fclose(fp);
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}
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else
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filter(stdin, "standard input");
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quit(0);
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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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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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init() /* start rtrace and set up buffers */
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{
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extern int o_face(), o_sphere(), o_ring();
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int maxbytes;
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/* set up object functions */
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ofun[OBJ_FACE].funp = o_face;
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ofun[OBJ_SPHERE].funp = o_sphere;
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ofun[OBJ_RING].funp = o_ring;
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/* set up signal handling */
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signal(SIGPIPE, quit);
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/* start rtrace process */
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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(6*sizeof(float)*rt.bsiz--);
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rt.dest = (float **)malloc(sizeof(float *)*rt.bsiz);
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if (rt.buf == NULL || rt.dest == NULL)
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error(SYSTEM, "out of memory in init");
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rt.nrays = 0;
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/* set up urand */
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initurand(2048);
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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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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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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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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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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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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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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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strcpy(thisillum.datafile,thisillum.matname);
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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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if (cp[1] != '=')
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break;
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matselect = (*cp == 'i') ? S_ELEM : S_COMPL;
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cp += 2;
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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 = (thisillum.flags|IL_COLAVG)
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& ~IL_COLDST;
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break;
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case 'd': /* distribution */
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thisillum.flags |= (IL_COLDST|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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| 306 |
if (!isintd(++cp, " \t\n"))
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break;
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| 308 |
thisillum.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 'l': /* light sources */
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cp++;
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if (*cp == '+')
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thisillum.flags |= IL_LIGHT;
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else if (*cp == '-')
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thisillum.flags &= ~IL_LIGHT;
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else
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break;
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cp++;
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| 328 |
continue;
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case 'o': /* output file */
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| 330 |
if (*++cp != '=')
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| 331 |
break;
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| 332 |
if (!*++cp)
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| 333 |
break;
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| 334 |
atos(buf, sizeof(buf), cp);
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| 335 |
cp = sskip(cp);
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| 336 |
if (freopen(buf, "w", stdout) == NULL) {
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| 337 |
sprintf(errmsg,
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| 338 |
"cannot open output file \"%s\"", buf);
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| 339 |
error(SYSTEM, errmsg);
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| 340 |
}
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| 341 |
doneheader = 0;
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| 342 |
continue;
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| 343 |
case '!': /* processed file! */
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| 344 |
sprintf(errmsg, "(%s): already processed!", nm);
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| 345 |
error(WARNING, errmsg);
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| 346 |
matselect = S_NONE;
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| 347 |
return;
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| 348 |
}
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| 349 |
opterr: /* skip faulty option */
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| 350 |
cp = sskip(cp);
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| 351 |
nerrs++;
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| 352 |
}
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| 353 |
/* print header? */
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| 354 |
checkhead();
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| 355 |
/* issue warnings? */
|
| 356 |
if (nerrs) {
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| 357 |
sprintf(errmsg, "(%s): %d error(s) in option line:",
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| 358 |
nm, nerrs);
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| 359 |
error(WARNING, errmsg);
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| 360 |
wputs(s);
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| 361 |
printf("# %s: the following option line has %d error(s):\n",
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| 362 |
progname, nerrs);
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| 363 |
}
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| 364 |
/* print pure comment */
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| 365 |
printf("# %s", s+2);
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| 366 |
}
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| 367 |
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| 368 |
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| 369 |
printhead(ac, av) /* print out header */
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| 370 |
register int ac;
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| 371 |
register char **av;
|
| 372 |
{
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| 373 |
putchar('#');
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| 374 |
while (ac-- > 0) {
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| 375 |
putchar(' ');
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| 376 |
fputs(*av++, stdout);
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| 377 |
}
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| 378 |
fputs("\n#@mkillum !\n", stdout);
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| 379 |
}
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| 380 |
|
| 381 |
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| 382 |
xobject(fp, nm) /* translate an object from fp */
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| 383 |
FILE *fp;
|
| 384 |
char *nm;
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| 385 |
{
|
| 386 |
OBJREC thisobj;
|
| 387 |
char str[MAXSTR];
|
| 388 |
int doit;
|
| 389 |
/* read the object */
|
| 390 |
if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL)
|
| 391 |
goto readerr;
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| 392 |
if (fgetword(str, MAXSTR, fp) == NULL)
|
| 393 |
goto readerr;
|
| 394 |
/* is it an alias? */
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| 395 |
if (!strcmp(str, ALIASID)) {
|
| 396 |
if (fgetword(str, MAXSTR, fp) == NULL)
|
| 397 |
goto readerr;
|
| 398 |
printf("\n%s %s %s", thisillum.altmat, ALIASID, str);
|
| 399 |
if (fgetword(str, MAXSTR, fp) == NULL)
|
| 400 |
goto readerr;
|
| 401 |
printf("\t%s\n", str);
|
| 402 |
return;
|
| 403 |
}
|
| 404 |
thisobj.omod = OVOID; /* unused field */
|
| 405 |
if ((thisobj.otype = otype(str)) < 0) {
|
| 406 |
sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str);
|
| 407 |
error(USER, errmsg);
|
| 408 |
}
|
| 409 |
if (fgetword(str, MAXSTR, fp) == NULL)
|
| 410 |
goto readerr;
|
| 411 |
thisobj.oname = str;
|
| 412 |
if (readfargs(&thisobj.oargs, fp) != 1)
|
| 413 |
goto readerr;
|
| 414 |
thisobj.os = NULL;
|
| 415 |
/* check for translation */
|
| 416 |
switch (matselect) {
|
| 417 |
case S_NONE:
|
| 418 |
doit = 0;
|
| 419 |
break;
|
| 420 |
case S_ALL:
|
| 421 |
doit = 1;
|
| 422 |
break;
|
| 423 |
case S_ELEM:
|
| 424 |
doit = !strcmp(thisillum.altmat, matcheck);
|
| 425 |
break;
|
| 426 |
case S_COMPL:
|
| 427 |
doit = strcmp(thisillum.altmat, matcheck);
|
| 428 |
break;
|
| 429 |
}
|
| 430 |
doit = doit && issurface(thisobj.otype);
|
| 431 |
/* print header? */
|
| 432 |
checkhead();
|
| 433 |
/* process object */
|
| 434 |
if (doit)
|
| 435 |
(*ofun[thisobj.otype].funp)(&thisobj, &thisillum, &rt, nm);
|
| 436 |
else
|
| 437 |
printobj(thisillum.altmat, &thisobj);
|
| 438 |
/* free arguments */
|
| 439 |
freefargs(&thisobj.oargs);
|
| 440 |
return;
|
| 441 |
readerr:
|
| 442 |
sprintf(errmsg, "(%s): error reading scene", nm);
|
| 443 |
error(USER, errmsg);
|
| 444 |
}
|
