src/gen/mkillum.c

#ifndef lint
static const char RCSid[] = "$Id: mkillum.c,v 2.36 2009/12/12 19:00:59 greg Exp $";
#endif
/*
 * Make illum sources for optimizing rendering process
 */

#include  <signal.h>
#include  <ctype.h>

#include  "mkillum.h"

                                /* default parameters */
#define  SAMPDENS       48              /* points per projected steradian */
#define  NSAMPS         32              /* samples per point */
#define  DFLMAT         "illum_mat"     /* material name */
#define  DFLDAT         "illum"         /* data file name */
                                /* selection options */
#define  S_NONE         0               /* select none */
#define  S_ELEM         1               /* select specified element */
#define  S_COMPL        2               /* select all but element */
#define  S_ALL          3               /* select all */

struct illum_args  thisillum = {        /* our illum and default values */
                0,
                UDzpos,
                0.,
                DFLMAT,
                DFLDAT,
                0,
                VOIDID,
                SAMPDENS,
                NSAMPS,
                NULL,
                0.,
        };

char    matcheck[MAXSTR];       /* current material to include or exclude */
int     matselect = S_ALL;      /* selection criterion */

int     gargc;                  /* global argc */
char    **gargv;                /* global argv */

int     doneheader = 0;         /* printed header yet? */
#define  checkhead()    if (!doneheader++) printhead(gargc,gargv)

int     warnings = 1;           /* print warnings? */

void init(char *octnm, int np);
void filter(register FILE       *infp, char     *name);
void xoptions(char      *s, char        *nm);
void printopts(void);
void printhead(register int  ac, register char  **av);
void xobject(FILE  *fp, char  *nm);


int
main(           /* compute illum distributions using rtrace */
        int     argc,
        char    *argv[]
)
{
        int     nprocs = 1;
        FILE    *fp;
        int     rval;
        register int    i;
                                /* set global arguments */
        gargv = argv;
        progname = gargv[0];
                                /* set up rendering defaults */
        dstrsrc = 0.5;
        directrelay = 3;
        ambounce = 2;
                                /* get options from command line */
        for (i = 1; i < argc; i++) {
                while ((rval = expandarg(&argc, &argv, i)) > 0)
                        ;
                if (rval < 0) {
                        sprintf(errmsg, "cannot expand '%s'", argv[i]);
                        error(SYSTEM, errmsg);
                }
                if (argv[i][0] != '-')
                        break;
                if (!strcmp(argv[i], "-w")) {
                        warnings = 0;
                        continue;
                }
                if (!strcmp(argv[i], "-n")) {
                        nprocs = atoi(argv[++i]);
                        if (nprocs <= 0)
                                error(USER, "illegal number of processes");
                        continue;
                }
                if (!strcmp(argv[i], "-defaults")) {
                        printopts();
                        print_rdefaults();
                        quit(0);
                }
                rval = getrenderopt(argc-i, argv+i);
                if (rval < 0) {
                        sprintf(errmsg, "bad render option at '%s'", argv[i]);
                        error(USER, errmsg);
                }
                i += rval;
        }
        gargc = ++i;
                                /* add "mandatory" render options */
        do_irrad = 0;
        if (gargc > argc || argv[gargc-1][0] == '-')
                error(USER, "missing octree argument");
                                /* else initialize and run our calculation */
        init(argv[gargc-1], nprocs);
        if (gargc < argc) {
                if (gargc == argc-1 || argv[gargc][0] != '<' || argv[gargc][1])
                        error(USER, "use '< file1 file2 ..' for multiple inputs");
                for (i = gargc+1; i < argc; i++) {
                        if ((fp = fopen(argv[i], "r")) == NULL) {
                                sprintf(errmsg,
                                "cannot open scene file \"%s\"", argv[i]);
                                error(SYSTEM, errmsg);
                        }
                        filter(fp, argv[i]);
                        fclose(fp);
                }
        } else
                filter(stdin, "standard input");
        quit(0);
        return 0; /* pro forma return */
}


void
init(char *octnm, int np)               /* start rendering process(es) */
{
                                        /* set up signal handling */
        signal(SIGINT, quit);
#ifdef SIGHUP
        signal(SIGHUP, quit);
#endif
#ifdef SIGTERM
        signal(SIGTERM, quit);
#endif
#ifdef SIGPIPE
        signal(SIGPIPE, quit);
#endif
                                        /* start rendering process(es) */
        ray_pinit(octnm, np);
}


void
eputs(                          /* put string to stderr */
        register char  *s
)
{
        static int  midline = 0;

        if (!*s) return;
        if (!midline) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        midline = s[strlen(s)-1] != '\n';
}


void
wputs(s)                        /* print warning if enabled */
char  *s;
{
        if (warnings)
                eputs(s);
}


void
quit(ec)                        /* make sure exit is called */
int     ec;
{
        if (ray_pnprocs > 0)    /* close children if any */
                ray_pclose(0);          
        exit(ec);
}


void
filter(         /* process stream */
        register FILE   *infp,
        char    *name
)
{
        char    buf[512];
        FILE    *pfp;
        register int    c;

        while ((c = getc(infp)) != EOF) {
                if (isspace(c))
                        continue;
                if (c == '#') {                         /* comment/options */
                        buf[0] = c;
                        fgets(buf+1, sizeof(buf)-1, infp);
                        xoptions(buf, name);
                } else if (c == '!') {                  /* command */
                        buf[0] = c;
                        fgetline(buf+1, sizeof(buf)-1, infp);
                        if ((pfp = popen(buf+1, "r")) == NULL) {
                                sprintf(errmsg, "cannot execute \"%s\"", buf);
                                error(SYSTEM, errmsg);
                        }
                        filter(pfp, buf);
                        pclose(pfp);
                } else {                                /* object */
                        ungetc(c, infp);
                        xobject(infp, name);
                }
        }
}


void
xoptions(                       /* process options in string s */
        char    *s,
        char    *nm
)
{
        extern FILE     *freopen();
        char    buf[64];
        int     negax;
        int     nerrs = 0;
        register char   *cp;

        if (strncmp(s, "#@mkillum", 9) || !isspace(s[9])) {
                fputs(s, stdout);               /* not for us */
                return;
        }
        cp = s+10;
        while (*cp) {
                switch (*cp) {
                case ' ':
                case '\t':
                case '\n':
                case '\r':
                case '\f':
                        cp++;
                        continue;
                case 'm':                       /* material name */
                        if (*++cp != '=')
                                break;
                        if (!*++cp || isspace(*cp))
                                break;
                        atos(thisillum.matname, MAXSTR, cp);
                        cp = sskip(cp);
                        if (!(thisillum.flags & IL_DATCLB)) {
                                strcpy(thisillum.datafile, thisillum.matname);
                                thisillum.dfnum = 0;
                        }
                        continue;
                case 'f':                       /* data file name */
                        if (*++cp != '=')
                                break;
                        if (!*++cp || isspace(*cp)) {
                                strcpy(thisillum.datafile,thisillum.matname);
                                thisillum.dfnum = 0;
                                thisillum.flags &= ~IL_DATCLB;
                                continue;
                        }
                        atos(thisillum.datafile, MAXSTR, cp);
                        cp = sskip(cp);
                        thisillum.dfnum = 0;
                        thisillum.flags |= IL_DATCLB;
                        continue;
                case 'i':                       /* include material */
                case 'e':                       /* exclude material */
                        if (cp[1] != '=')
                                break;
                        matselect = (*cp == 'i') ? S_ELEM : S_COMPL;
                        cp += 2;
                        atos(matcheck, MAXSTR, cp);
                        cp = sskip(cp);
                        continue;
                case 'a':                       /* use everything */
                        cp = sskip(cp);
                        matselect = S_ALL;
                        continue;
                case 'n':                       /* use nothing (passive) */
                        cp = sskip(cp);
                        matselect = S_NONE;
                        continue;
                case 'c':                       /* color calculation */
                        if (*++cp != '=')
                                break;
                        switch (*++cp) {
                        case 'a':                       /* average */
                                thisillum.flags = (thisillum.flags|IL_COLAVG)
                                                        & ~IL_COLDST;
                                break;
                        case 'd':                       /* distribution */
                                thisillum.flags |= (IL_COLDST|IL_COLAVG);
                                break;
                        case 'n':                       /* none */
                                thisillum.flags &= ~(IL_COLAVG|IL_COLDST);
                                break;
                        default:
                                goto opterr;
                        }
                        cp = sskip(cp);
                        continue;
                case 'd':                       /* sample density / BSDF data */
                        if (*++cp != '=')
                                break;
                        if (thisillum.sd != NULL) {
                                free_BSDF(thisillum.sd);
                                thisillum.sd = NULL;
                        }
                        if (!*++cp || isspace(*cp))
                                continue;
                        if (isintd(cp, " \t\n\r")) {
                                thisillum.sampdens = atoi(cp);
                        } else {
                                atos(buf, sizeof(buf), cp);
                                thisillum.sd = load_BSDF(buf);
                                if (thisillum.sd == NULL)
                                        break;
                        }
                        cp = sskip(cp);
                        continue;
                case 's':                       /* surface super-samples */
                        if (*++cp != '=')
                                break;
                        if (!isintd(++cp, " \t\n\r"))
                                break;
                        thisillum.nsamps = atoi(cp);
                        cp = sskip(cp);
                        continue;
                case 'l':                       /* light sources */
                        cp++;
                        if (*cp == '+')
                                thisillum.flags |= IL_LIGHT;
                        else if (*cp == '-')
                                thisillum.flags &= ~IL_LIGHT;
                        else
                                break;
                        cp++;
                        continue;
                case 'b':                       /* brightness */
                        if (*++cp != '=')
                                break;
                        if (!isfltd(++cp, " \t\n\r"))
                                break;
                        thisillum.minbrt = atof(cp);
                        if (thisillum.minbrt < 0.)
                                thisillum.minbrt = 0.;
                        cp = sskip(cp);
                        continue;
                case 'o':                       /* output file */
                        if (*++cp != '=')
                                break;
                        if (!*++cp || isspace(*cp))
                                break;
                        atos(buf, sizeof(buf), cp);
                        cp = sskip(cp);
                        if (freopen(buf, "w", stdout) == NULL) {
                                sprintf(errmsg,
                                "cannot open output file \"%s\"", buf);
                                error(SYSTEM, errmsg);
                        }
                        doneheader = 0;
                        continue;
                case 'u':                       /* up direction */
                        if (*++cp != '=')
                                break;
                        if (!*++cp || isspace(*cp)) {
                                thisillum.udir = UDunknown;
                                continue;
                        }
                        negax = 0;
                        if (*cp == '+')
                                cp++;
                        else if (*cp == '-') {
                                negax++;
                                cp++;
                        }
                        switch (*cp++) {
                        case 'x':
                        case 'X':
                                thisillum.udir = negax ? UDxneg : UDxpos;
                                break;
                        case 'y':
                        case 'Y':
                                thisillum.udir = negax ? UDyneg : UDypos;
                                break;
                        case 'z':
                        case 'Z':
                                thisillum.udir = negax ? UDzneg : UDzpos;
                                break;
                        default:
                                thisillum.udir = UDunknown;
                                break;
                        }
                        if (thisillum.udir == UDunknown || !isspace(*cp))
                                break;
                        continue;
                case 't':                       /* object thickness */
                        if (*++cp != '=')
                                break;
                        if (!isfltd(++cp, " \t\n\r"))
                                break;
                        thisillum.thick = atof(cp);
                        if (thisillum.thick < .0)
                                thisillum.thick = .0;
                        cp = sskip(cp);
                        continue;
                case '!':                       /* processed file! */
                        sprintf(errmsg, "(%s): already processed!", nm);
                        error(WARNING, errmsg);
                        matselect = S_NONE;
                        return;
                }
        opterr:                                 /* skip faulty option */
                while (*cp && !isspace(*cp))
                        cp++;
                nerrs++;
        }
                                                /* print header? */
        checkhead();
                                                /* issue warnings? */
        if (nerrs) {
                sprintf(errmsg, "(%s): %d error(s) in option line:",
                                nm, nerrs);
                error(WARNING, errmsg);
                wputs(s);
                printf("# %s: the following option line has %d error(s):\n",
                                progname, nerrs);
        }
                                                /* print pure comment */
        printf("# %s", s+2);
}

void
printopts(void)                 /* print out option default values */
{
        printf("m=%-15s\t\t# material name\n", thisillum.matname);
        printf("f=%-15s\t\t# data file name\n", thisillum.datafile);
        if (thisillum.flags & IL_COLAVG)
                if (thisillum.flags & IL_COLDST)
                        printf("c=d\t\t\t\t# color distribution\n");
                else
                        printf("c=a\t\t\t\t# color average\n");
        else
                printf("c=n\t\t\t\t# color none\n");
        if (thisillum.flags & IL_LIGHT)
                printf("l+\t\t\t\t# light type on\n");
        else
                printf("l-\t\t\t\t# light type off\n");
        printf("d=%d\t\t\t\t# density of directions\n", thisillum.sampdens);
        printf("s=%d\t\t\t\t# samples per direction\n", thisillum.nsamps);
        printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt);
        switch (thisillum.udir) {
        case UDzneg:
                fputs("u=-Z\t\t\t\t# up is negative Z\n", stdout);
                break;
        case UDyneg:
                fputs("u=-Y\t\t\t\t# up is negative Y\n", stdout);
                break;
        case UDxneg:
                fputs("u=-X\t\t\t\t# up is negative X\n", stdout);
                break;
        case UDxpos:
                fputs("u=+X\t\t\t\t# up is positive X\n", stdout);
                break;
        case UDypos:
                fputs("u=+Y\t\t\t\t# up is positive Y\n", stdout);
                break;
        case UDzpos:
                fputs("u=+Z\t\t\t\t# up is positive Z\n", stdout);
                break;
        case UDunknown:
                break;
        }
        printf("t=%f\t\t\t# object thickness\n", thisillum.thick);
}


void
printhead(                      /* print out header */
        register int  ac,
        register char  **av
)
{
        putchar('#');
        while (ac-- > 0) {
                putchar(' ');
                fputs(*av++, stdout);
        }
        fputs("\n#@mkillum !\n", stdout);
}


void
xobject(                                /* translate an object from fp */
        FILE  *fp,
        char  *nm
)
{
        OBJREC  thisobj;
        char  str[MAXSTR];
        int  doit;
                                        /* read the object */
        if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL)
                goto readerr;
        if (fgetword(str, MAXSTR, fp) == NULL)
                goto readerr;
                                        /* is it an alias? */
        if (!strcmp(str, ALIASKEY)) {
                if (fgetword(str, MAXSTR, fp) == NULL)
                        goto readerr;
                printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str);
                if (fgetword(str, MAXSTR, fp) == NULL)
                        goto readerr;
                printf("\t%s\n", str);
                return;
        }
        thisobj.omod = OVOID;           /* unused field */
        if ((thisobj.otype = otype(str)) < 0) {
                sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str);
                error(USER, errmsg);
        }
        if (fgetword(str, MAXSTR, fp) == NULL)
                goto readerr;
        thisobj.oname = str;
        if (readfargs(&thisobj.oargs, fp) != 1)
                goto readerr;
        thisobj.os = NULL;
                                        /* check for translation */
        switch (matselect) {
        case S_NONE:
                doit = 0;
                break;
        case S_ALL:
                doit = 1;
                break;
        case S_ELEM:
                doit = !strcmp(thisillum.altmat, matcheck);
                break;
        case S_COMPL:
                doit = strcmp(thisillum.altmat, matcheck);
                break;
        }
        doit = doit && issurface(thisobj.otype);
                                                /* print header? */
        checkhead();
                                                /* process object */
        if (doit)
                switch (thisobj.otype) {
                case OBJ_FACE:
                        my_face(&thisobj, &thisillum, nm);
                        break;
                case OBJ_SPHERE:
                        my_sphere(&thisobj, &thisillum, nm);
                        break;
                case OBJ_RING:
                        my_ring(&thisobj, &thisillum, nm);
                        break;
                default:
                        my_default(&thisobj, &thisillum, nm);
                        break;
                }
        else
                printobj(thisillum.altmat, &thisobj);
                                                /* free arguments */
        freefargs(&thisobj.oargs);
        return;
readerr:
        sprintf(errmsg, "(%s): error reading input", nm);
        error(USER, errmsg);
}
Revision:	2.37
Committed:	Mon Aug 15 19:48:06 2011 UTC (12 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.36:	+1 -2 lines
Log Message:	Made direct visibility (-dv) flag irrelevant and fixed BSDF material sampling
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.37	static const char RCSid[] = "$Id: mkillum.c,v 2.36 2009/12/12 19:00:59 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* Make illum sources for optimizing rendering process
6			*/
7
8	greg	1.3	#include <signal.h>
9	schorsch	2.13	#include <ctype.h>
10	greg	1.3
11	greg	2.15	#include "mkillum.h"
12	greg	1.1
13			/* default parameters */
14	greg	1.8	#define SAMPDENS 48 /* points per projected steradian */
15	greg	1.1	#define NSAMPS 32 /* samples per point */
16			#define DFLMAT "illum_mat" /* material name */
17	greg	1.10	#define DFLDAT "illum" /* data file name */
18	greg	1.1	/* selection options */
19			#define S_NONE 0 /* select none */
20			#define S_ELEM 1 /* select specified element */
21			#define S_COMPL 2 /* select all but element */
22			#define S_ALL 3 /* select all */
23
24	greg	1.2	struct illum_args thisillum = { /* our illum and default values */
25			0,
26	greg	2.30	UDzpos,
27	greg	2.31	0.,
28	greg	1.2	DFLMAT,
29	greg	1.10	DFLDAT,
30	greg	1.2	0,
31			VOIDID,
32	greg	1.3	SAMPDENS,
33	greg	1.2	NSAMPS,
34	greg	2.30	NULL,
35	greg	1.12	0.,
36	greg	1.2	};
37	greg	1.1
38			char matcheck[MAXSTR]; /* current material to include or exclude */
39			int matselect = S_ALL; /* selection criterion */
40
41			int gargc; /* global argc */
42			char *gargv; / global argv */
43
44			int doneheader = 0; /* printed header yet? */
45	greg	1.2	#define checkhead() if (!doneheader++) printhead(gargc,gargv)
46	greg	1.1
47	greg	1.2	int warnings = 1; /* print warnings? */
48
49	greg	2.28	void init(char *octnm, int np);
50	schorsch	2.19	void filter(register FILE infp, char name);
51			void xoptions(char s, char nm);
52			void printopts(void);
53			void printhead(register int ac, register char **av);
54			void xobject(FILE fp, char nm);
55	greg	1.1
56	schorsch	2.19
57			int
58			main( /* compute illum distributions using rtrace */
59			int argc,
60			char *argv[]
61			)
62	greg	1.1	{
63	greg	2.20	int nprocs = 1;
64	greg	1.3	FILE *fp;
65	greg	2.28	int rval;
66	greg	1.1	register int i;
67			/* set global arguments */
68	greg	1.3	gargv = argv;
69	greg	2.28	progname = gargv[0];
70			/* set up rendering defaults */
71	greg	2.35	dstrsrc = 0.5;
72	greg	2.28	directrelay = 3;
73			ambounce = 2;
74			/* get options from command line */
75	greg	2.29	for (i = 1; i < argc; i++) {
76	greg	2.28	while ((rval = expandarg(&argc, &argv, i)) > 0)
77			;
78			if (rval < 0) {
79			sprintf(errmsg, "cannot expand '%s'", argv[i]);
80			error(SYSTEM, errmsg);
81			}
82			if (argv[i][0] != '-')
83	greg	1.3	break;
84	greg	2.28	if (!strcmp(argv[i], "-w")) {
85			warnings = 0;
86			continue;
87			}
88			if (!strcmp(argv[i], "-n")) {
89			nprocs = atoi(argv[++i]);
90			if (nprocs <= 0)
91			error(USER, "illegal number of processes");
92			continue;
93			}
94			if (!strcmp(argv[i], "-defaults")) {
95			printopts();
96			print_rdefaults();
97			quit(0);
98			}
99			rval = getrenderopt(argc-i, argv+i);
100			if (rval < 0) {
101			sprintf(errmsg, "bad render option at '%s'", argv[i]);
102			error(USER, errmsg);
103	greg	1.1	}
104	greg	2.28	i += rval;
105	greg	1.1	}
106	greg	2.28	gargc = ++i;
107			/* add "mandatory" render options */
108			do_irrad = 0;
109			if (gargc > argc \|\| argv[gargc-1][0] == '-')
110	greg	2.3	error(USER, "missing octree argument");
111	greg	1.1	/* else initialize and run our calculation */
112	greg	2.28	init(argv[gargc-1], nprocs);
113			if (gargc < argc) {
114			if (gargc == argc-1 \|\| argv[gargc][0] != '<' \|\| argv[gargc][1])
115	greg	2.30	error(USER, "use '< file1 file2 ..' for multiple inputs");
116	greg	1.3	for (i = gargc+1; i < argc; i++) {
117	greg	1.5	if ((fp = fopen(argv[i], "r")) == NULL) {
118	greg	1.3	sprintf(errmsg,
119			"cannot open scene file \"%s\"", argv[i]);
120			error(SYSTEM, errmsg);
121			}
122			filter(fp, argv[i]);
123			fclose(fp);
124			}
125	greg	2.28	} else
126	greg	1.3	filter(stdin, "standard input");
127	greg	2.20	quit(0);
128	schorsch	2.27	return 0; /* pro forma return */
129	greg	1.1	}
130
131	schorsch	2.26
132	greg	2.11	void
133	greg	2.28	init(char octnm, int np) / start rendering process(es) */
134	greg	1.3	{
135			/* set up signal handling */
136	greg	2.25	signal(SIGINT, quit);
137			#ifdef SIGHUP
138			signal(SIGHUP, quit);
139			#endif
140			#ifdef SIGTERM
141			signal(SIGTERM, quit);
142			#endif
143			#ifdef SIGPIPE
144	greg	1.3	signal(SIGPIPE, quit);
145	schorsch	2.13	#endif
146	greg	2.28	/* start rendering process(es) */
147			ray_pinit(octnm, np);
148	greg	1.1	}
149
150
151	greg	2.11	void
152	schorsch	2.19	eputs( /* put string to stderr */
153			register char *s
154			)
155	greg	1.1	{
156			static int midline = 0;
157
158			if (!*s) return;
159			if (!midline) {
160			fputs(progname, stderr);
161			fputs(": ", stderr);
162			}
163			fputs(s, stderr);
164			midline = s[strlen(s)-1] != '\n';
165			}
166
167
168	greg	2.11	void
169	greg	1.2	wputs(s) /* print warning if enabled */
170			char *s;
171			{
172			if (warnings)
173			eputs(s);
174			}
175
176
177	schorsch	2.19	void
178	greg	2.36	quit(ec) /* make sure exit is called */
179			int ec;
180			{
181			if (ray_pnprocs > 0) /* close children if any */
182			ray_pclose(0);
183			exit(ec);
184			}
185
186
187			void
188	schorsch	2.19	filter( /* process stream */
189			register FILE *infp,
190			char *name
191			)
192	greg	1.1	{
193			char buf[512];
194			FILE *pfp;
195			register int c;
196
197			while ((c = getc(infp)) != EOF) {
198			if (isspace(c))
199			continue;
200			if (c == '#') { /* comment/options */
201			buf[0] = c;
202			fgets(buf+1, sizeof(buf)-1, infp);
203	greg	1.2	xoptions(buf, name);
204	greg	1.1	} else if (c == '!') { /* command */
205			buf[0] = c;
206			fgetline(buf+1, sizeof(buf)-1, infp);
207			if ((pfp = popen(buf+1, "r")) == NULL) {
208			sprintf(errmsg, "cannot execute \"%s\"", buf);
209			error(SYSTEM, errmsg);
210			}
211	greg	1.2	filter(pfp, buf);
212	greg	1.1	pclose(pfp);
213			} else { /* object */
214			ungetc(c, infp);
215			xobject(infp, name);
216			}
217			}
218			}
219
220
221	schorsch	2.19	void
222			xoptions( /* process options in string s */
223			char *s,
224			char *nm
225			)
226	greg	1.1	{
227			extern FILE *freopen();
228			char buf[64];
229	greg	2.30	int negax;
230	greg	1.1	int nerrs = 0;
231			register char *cp;
232
233	greg	1.2	if (strncmp(s, "#@mkillum", 9) \|\| !isspace(s[9])) {
234			fputs(s, stdout); /* not for us */
235	greg	1.1	return;
236	greg	1.2	}
237	greg	1.1	cp = s+10;
238			while (*cp) {
239			switch (*cp) {
240			case ' ':
241			case '\t':
242			case '\n':
243	greg	2.11	case '\r':
244			case '\f':
245	greg	1.1	cp++;
246			continue;
247			case 'm': /* material name */
248	greg	1.2	if (*++cp != '=')
249	greg	1.1	break;
250	greg	2.8	if (!++cp \|\| isspace(cp))
251	greg	1.2	break;
252	greg	1.1	atos(thisillum.matname, MAXSTR, cp);
253			cp = sskip(cp);
254			if (!(thisillum.flags & IL_DATCLB)) {
255			strcpy(thisillum.datafile, thisillum.matname);
256			thisillum.dfnum = 0;
257			}
258			continue;
259			case 'f': /* data file name */
260	greg	1.2	if (*++cp != '=')
261	greg	1.1	break;
262	greg	2.8	if (!++cp \|\| isspace(cp)) {
263	greg	1.6	strcpy(thisillum.datafile,thisillum.matname);
264	greg	1.10	thisillum.dfnum = 0;
265	greg	1.1	thisillum.flags &= ~IL_DATCLB;
266			continue;
267			}
268			atos(thisillum.datafile, MAXSTR, cp);
269			cp = sskip(cp);
270			thisillum.dfnum = 0;
271			thisillum.flags \|= IL_DATCLB;
272			continue;
273			case 'i': /* include material */
274			case 'e': /* exclude material */
275	greg	1.6	if (cp[1] != '=')
276	greg	1.1	break;
277	greg	1.7	matselect = (*cp == 'i') ? S_ELEM : S_COMPL;
278			cp += 2;
279			atos(matcheck, MAXSTR, cp);
280	greg	1.1	cp = sskip(cp);
281			continue;
282			case 'a': /* use everything */
283			cp = sskip(cp);
284			matselect = S_ALL;
285			continue;
286			case 'n': /* use nothing (passive) */
287			cp = sskip(cp);
288			matselect = S_NONE;
289			continue;
290			case 'c': /* color calculation */
291	greg	1.2	if (*++cp != '=')
292	greg	1.1	break;
293	greg	1.2	switch (*++cp) {
294	greg	1.1	case 'a': /* average */
295	greg	1.6	thisillum.flags = (thisillum.flags\|IL_COLAVG)
296			& ~IL_COLDST;
297	greg	1.1	break;
298			case 'd': /* distribution */
299	greg	1.5	thisillum.flags \|= (IL_COLDST\|IL_COLAVG);
300	greg	1.1	break;
301			case 'n': /* none */
302			thisillum.flags &= ~(IL_COLAVG\|IL_COLDST);
303			break;
304			default:
305			goto opterr;
306			}
307			cp = sskip(cp);
308			continue;
309	greg	2.30	case 'd': /* sample density / BSDF data */
310	greg	1.2	if (*++cp != '=')
311	greg	1.1	break;
312	greg	2.30	if (thisillum.sd != NULL) {
313			free_BSDF(thisillum.sd);
314			thisillum.sd = NULL;
315			}
316			if (!++cp \|\| isspace(cp))
317			continue;
318	greg	2.33	if (isintd(cp, " \t\n\r")) {
319	greg	2.30	thisillum.sampdens = atoi(cp);
320			} else {
321			atos(buf, sizeof(buf), cp);
322			thisillum.sd = load_BSDF(buf);
323			if (thisillum.sd == NULL)
324			break;
325			}
326	greg	1.1	cp = sskip(cp);
327			continue;
328	greg	2.30	case 's': /* surface super-samples */
329	greg	1.2	if (*++cp != '=')
330	greg	1.1	break;
331	greg	2.11	if (!isintd(++cp, " \t\n\r"))
332	greg	1.1	break;
333			thisillum.nsamps = atoi(cp);
334			cp = sskip(cp);
335			continue;
336	greg	1.3	case 'l': /* light sources */
337	greg	1.4	cp++;
338			if (*cp == '+')
339	greg	1.3	thisillum.flags \|= IL_LIGHT;
340	greg	1.4	else if (*cp == '-')
341			thisillum.flags &= ~IL_LIGHT;
342	greg	1.3	else
343	greg	1.4	break;
344			cp++;
345	greg	1.3	continue;
346	greg	1.12	case 'b': /* brightness */
347			if (*++cp != '=')
348			break;
349	greg	2.11	if (!isfltd(++cp, " \t\n\r"))
350	greg	1.12	break;
351			thisillum.minbrt = atof(cp);
352	greg	1.13	if (thisillum.minbrt < 0.)
353			thisillum.minbrt = 0.;
354	greg	1.12	cp = sskip(cp);
355			continue;
356	greg	1.1	case 'o': /* output file */
357	greg	1.2	if (*++cp != '=')
358	greg	1.1	break;
359	greg	2.8	if (!++cp \|\| isspace(cp))
360	greg	1.2	break;
361	greg	1.1	atos(buf, sizeof(buf), cp);
362			cp = sskip(cp);
363			if (freopen(buf, "w", stdout) == NULL) {
364			sprintf(errmsg,
365			"cannot open output file \"%s\"", buf);
366			error(SYSTEM, errmsg);
367			}
368			doneheader = 0;
369			continue;
370	greg	2.30	case 'u': /* up direction */
371			if (*++cp != '=')
372			break;
373			if (!++cp \|\| isspace(cp)) {
374			thisillum.udir = UDunknown;
375			continue;
376			}
377			negax = 0;
378			if (*cp == '+')
379			cp++;
380			else if (*cp == '-') {
381			negax++;
382			cp++;
383			}
384			switch (*cp++) {
385			case 'x':
386			case 'X':
387			thisillum.udir = negax ? UDxneg : UDxpos;
388			break;
389			case 'y':
390			case 'Y':
391			thisillum.udir = negax ? UDyneg : UDypos;
392			break;
393			case 'z':
394			case 'Z':
395	greg	2.33	thisillum.udir = negax ? UDzneg : UDzpos;
396	greg	2.30	break;
397			default:
398			thisillum.udir = UDunknown;
399			break;
400			}
401			if (thisillum.udir == UDunknown \|\| !isspace(*cp))
402			break;
403			continue;
404	greg	2.31	case 't': /* object thickness */
405			if (*++cp != '=')
406			break;
407			if (!isfltd(++cp, " \t\n\r"))
408			break;
409			thisillum.thick = atof(cp);
410			if (thisillum.thick < .0)
411			thisillum.thick = .0;
412			cp = sskip(cp);
413			continue;
414	greg	1.6	case '!': /* processed file! */
415	greg	1.7	sprintf(errmsg, "(%s): already processed!", nm);
416	greg	1.6	error(WARNING, errmsg);
417	greg	1.7	matselect = S_NONE;
418	greg	1.6	return;
419	greg	1.1	}
420			opterr: /* skip faulty option */
421	greg	2.9	while (cp && !isspace(cp))
422			cp++;
423	greg	1.1	nerrs++;
424			}
425	greg	1.2	/* print header? */
426			checkhead();
427			/* issue warnings? */
428	greg	1.1	if (nerrs) {
429			sprintf(errmsg, "(%s): %d error(s) in option line:",
430			nm, nerrs);
431			error(WARNING, errmsg);
432	greg	1.2	wputs(s);
433			printf("# %s: the following option line has %d error(s):\n",
434			progname, nerrs);
435	greg	1.1	}
436	greg	1.2	/* print pure comment */
437	greg	1.4	printf("# %s", s+2);
438	greg	1.9	}
439
440	schorsch	2.19	void
441			printopts(void) /* print out option default values */
442	greg	1.9	{
443	greg	1.11	printf("m=%-15s\t\t# material name\n", thisillum.matname);
444			printf("f=%-15s\t\t# data file name\n", thisillum.datafile);
445	greg	2.2	if (thisillum.flags & IL_COLAVG)
446			if (thisillum.flags & IL_COLDST)
447			printf("c=d\t\t\t\t# color distribution\n");
448			else
449			printf("c=a\t\t\t\t# color average\n");
450			else
451			printf("c=n\t\t\t\t# color none\n");
452			if (thisillum.flags & IL_LIGHT)
453			printf("l+\t\t\t\t# light type on\n");
454			else
455			printf("l-\t\t\t\t# light type off\n");
456	greg	2.34	printf("d=%d\t\t\t\t# density of directions\n", thisillum.sampdens);
457			printf("s=%d\t\t\t\t# samples per direction\n", thisillum.nsamps);
458	greg	1.12	printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt);
459	greg	2.30	switch (thisillum.udir) {
460			case UDzneg:
461			fputs("u=-Z\t\t\t\t# up is negative Z\n", stdout);
462			break;
463			case UDyneg:
464			fputs("u=-Y\t\t\t\t# up is negative Y\n", stdout);
465			break;
466			case UDxneg:
467			fputs("u=-X\t\t\t\t# up is negative X\n", stdout);
468			break;
469			case UDxpos:
470			fputs("u=+X\t\t\t\t# up is positive X\n", stdout);
471			break;
472			case UDypos:
473			fputs("u=+Y\t\t\t\t# up is positive Y\n", stdout);
474			break;
475			case UDzpos:
476			fputs("u=+Z\t\t\t\t# up is positive Z\n", stdout);
477			break;
478			case UDunknown:
479			break;
480			}
481	greg	2.31	printf("t=%f\t\t\t# object thickness\n", thisillum.thick);
482	greg	1.1	}
483	greg	1.2
484
485	schorsch	2.19	void
486			printhead( /* print out header */
487			register int ac,
488			register char **av
489			)
490	greg	1.2	{
491			putchar('#');
492			while (ac-- > 0) {
493			putchar(' ');
494			fputs(*av++, stdout);
495			}
496	greg	1.6	fputs("\n#@mkillum !\n", stdout);
497	greg	1.2	}
498
499
500	schorsch	2.19	void
501			xobject( /* translate an object from fp */
502			FILE *fp,
503			char *nm
504			)
505	greg	1.2	{
506			OBJREC thisobj;
507			char str[MAXSTR];
508			int doit;
509			/* read the object */
510			if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL)
511			goto readerr;
512			if (fgetword(str, MAXSTR, fp) == NULL)
513			goto readerr;
514			/* is it an alias? */
515	greg	2.12	if (!strcmp(str, ALIASKEY)) {
516	greg	1.2	if (fgetword(str, MAXSTR, fp) == NULL)
517			goto readerr;
518	greg	2.12	printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str);
519	greg	1.2	if (fgetword(str, MAXSTR, fp) == NULL)
520			goto readerr;
521	greg	1.4	printf("\t%s\n", str);
522	greg	1.2	return;
523			}
524	greg	1.4	thisobj.omod = OVOID; /* unused field */
525	greg	1.2	if ((thisobj.otype = otype(str)) < 0) {
526			sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str);
527			error(USER, errmsg);
528			}
529			if (fgetword(str, MAXSTR, fp) == NULL)
530			goto readerr;
531			thisobj.oname = str;
532			if (readfargs(&thisobj.oargs, fp) != 1)
533			goto readerr;
534			thisobj.os = NULL;
535			/* check for translation */
536			switch (matselect) {
537			case S_NONE:
538			doit = 0;
539			break;
540			case S_ALL:
541	greg	1.4	doit = 1;
542	greg	1.2	break;
543			case S_ELEM:
544			doit = !strcmp(thisillum.altmat, matcheck);
545			break;
546			case S_COMPL:
547			doit = strcmp(thisillum.altmat, matcheck);
548			break;
549			}
550	greg	1.4	doit = doit && issurface(thisobj.otype);
551	greg	1.2	/* print header? */
552			checkhead();
553			/* process object */
554			if (doit)
555	greg	2.28	switch (thisobj.otype) {
556			case OBJ_FACE:
557			my_face(&thisobj, &thisillum, nm);
558			break;
559			case OBJ_SPHERE:
560			my_sphere(&thisobj, &thisillum, nm);
561			break;
562			case OBJ_RING:
563			my_ring(&thisobj, &thisillum, nm);
564			break;
565			default:
566			my_default(&thisobj, &thisillum, nm);
567			break;
568			}
569	greg	1.2	else
570			printobj(thisillum.altmat, &thisobj);
571			/* free arguments */
572			freefargs(&thisobj.oargs);
573			return;
574			readerr:
575	greg	2.28	sprintf(errmsg, "(%s): error reading input", nm);
576	greg	1.2	error(USER, errmsg);
577			}