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#include "mkillum.h" |
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#include <signal.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 SAMPDENS 48 /* 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_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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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-", "-di+", "-ov", "-h-", "-fff", NULL }; |
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char *myrtopts[] = { "-I-", "-i-", "-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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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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|
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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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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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*atos(), *iskip(), *fskip(), *strcpy(); |
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extern FILE *popen(); |
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|
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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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gargc = argc; gargv = argv; |
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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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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[argc-1]; |
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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[argc-1], "-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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} |
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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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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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|
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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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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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|
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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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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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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.bsiz--; /* allow for flush ray */ |
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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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|
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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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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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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 != '=') |
269 |
> |
if (cp[1] != '=') |
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break; |
271 |
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atos(matcheck, MAXSTR, ++cp); |
271 |
> |
matselect = (*cp == 'i') ? S_ELEM : S_COMPL; |
272 |
> |
cp += 2; |
273 |
> |
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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break; |
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switch (*++cp) { |
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case 'a': /* average */ |
289 |
< |
thisillum.flags |= IL_COLAVG; |
290 |
< |
thisillum.flags &= ~IL_COLDST; |
289 |
> |
thisillum.flags = (thisillum.flags|IL_COLAVG) |
290 |
> |
& ~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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> |
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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if (!isintd(++cp, " \t\n")) |
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break; |
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sampdens = atoi(cp); |
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> |
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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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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continue; |
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case 'o': /* output file */ |
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if (*++cp != '=') |
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break; |
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} |
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doneheader = 0; |
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continue; |
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case '!': /* processed file! */ |
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sprintf(errmsg, "(%s): already processed!", nm); |
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error(WARNING, errmsg); |
346 |
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matselect = S_NONE; |
347 |
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return; |
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} |
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opterr: /* skip faulty option */ |
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cp = sskip(cp); |
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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); |
365 |
> |
printf("# %s", s+2); |
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} |
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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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> |
fputs("\n#@mkillum !\n", stdout); |
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} |
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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; |
401 |
< |
printf(" %s\n", str); |
401 |
> |
printf("\t%s\n", str); |
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return; |
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} |
404 |
< |
thisobj.omod = OVOID; |
404 |
> |
thisobj.omod = OVOID; /* unused field */ |
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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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doit = 0; |
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break; |
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case S_ALL: |
421 |
< |
doit = issurface(thisobj.otype); |
421 |
> |
doit = 1; |
422 |
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break; |
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case S_ELEM: |
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doit = !strcmp(thisillum.altmat, matcheck); |
427 |
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doit = strcmp(thisillum.altmat, matcheck); |
428 |
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break; |
429 |
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} |
430 |
< |
if (doit) /* make sure we can do it */ |
389 |
< |
switch (thisobj.otype) { |
390 |
< |
case OBJ_SPHERE: |
391 |
< |
case OBJ_FACE: |
392 |
< |
case OBJ_RING: |
393 |
< |
break; |
394 |
< |
default: |
395 |
< |
sprintf(errmsg, |
396 |
< |
"(%s): cannot make illum for %s \"%s\"", |
397 |
< |
nm, ofun[thisobj.otype].funame, |
398 |
< |
thisobj.oname); |
399 |
< |
error(WARNING, errmsg); |
400 |
< |
doit = 0; |
401 |
< |
break; |
402 |
< |
} |
430 |
> |
doit = doit && issurface(thisobj.otype); |
431 |
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/* print header? */ |
432 |
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checkhead(); |
433 |
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/* process object */ |
434 |
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if (doit) |
435 |
< |
mkillum(&thisobj, &thisillum, &rt); |
435 |
> |
(*ofun[thisobj.otype].funp)(&thisobj, &thisillum, &rt, nm); |
436 |
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else |
437 |
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printobj(thisillum.altmat, &thisobj); |
438 |
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/* free arguments */ |
442 |
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sprintf(errmsg, "(%s): error reading scene", nm); |
443 |
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error(USER, errmsg); |
444 |
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} |
417 |
– |
|
418 |
– |
|
419 |
– |
int |
420 |
– |
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 |
– |
|
429 |
– |
return(-1); /* not found */ |
430 |
– |
} |
431 |
– |
|
432 |
– |
|
433 |
– |
o_default() {} |