src/gen/mkillum.c

#ifndef lint
static const char RCSid[] = "$Id: mkillum.c,v 2.28 2007/09/13 06:31:21 greg Exp $";
#endif
/*
 * Make illum sources for optimizing rendering process
 */

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

#include  "platform.h"
#include  "mkillum.h"
#include  "random.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,
                DFLMAT,
                DFLDAT,
                0,
                VOIDID,
                SAMPDENS,
                NSAMPS,
                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 = 0.25;
        directrelay = 3;
        directvis = 0;
        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
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     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':                       /* point sample density */
                        if (*++cp != '=')
                                break;
                        if (!isintd(++cp, " \t\n\r"))
                                break;
                        thisillum.sampdens = atoi(cp);
                        cp = sskip(cp);
                        continue;
                case 's':                       /* point 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 '!':                       /* 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 points\n", thisillum.sampdens);
        printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps);
        printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt);
}


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:	2.29
Committed:	Fri Sep 14 21:29:08 2007 UTC (16 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.28:	+2 -2 lines
Log Message:	Fixed -defaults option
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.29	static const char RCSid[] = "$Id: mkillum.c,v 2.28 2007/09/13 06:31:21 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	2.18	#include "platform.h"
12	greg	2.15	#include "mkillum.h"
13	schorsch	2.19	#include "random.h"
14	greg	1.1
15			/* default parameters */
16	greg	1.8	#define SAMPDENS 48 /* points per projected steradian */
17	greg	1.1	#define NSAMPS 32 /* samples per point */
18			#define DFLMAT "illum_mat" /* material name */
19	greg	1.10	#define DFLDAT "illum" /* data file name */
20	greg	1.1	/* selection options */
21			#define S_NONE 0 /* select none */
22			#define S_ELEM 1 /* select specified element */
23			#define S_COMPL 2 /* select all but element */
24			#define S_ALL 3 /* select all */
25
26	greg	1.2	struct illum_args thisillum = { /* our illum and default values */
27			0,
28			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	1.12	0.,
35	greg	1.2	};
36	greg	1.1
37			char matcheck[MAXSTR]; /* current material to include or exclude */
38			int matselect = S_ALL; /* selection criterion */
39
40			int gargc; /* global argc */
41			char *gargv; / global argv */
42
43			int doneheader = 0; /* printed header yet? */
44	greg	1.2	#define checkhead() if (!doneheader++) printhead(gargc,gargv)
45	greg	1.1
46	greg	1.2	int warnings = 1; /* print warnings? */
47
48	greg	2.28	void init(char *octnm, int np);
49	schorsch	2.19	void filter(register FILE infp, char name);
50			void xoptions(char s, char nm);
51			void printopts(void);
52			void printhead(register int ac, register char **av);
53			void xobject(FILE fp, char nm);
54	greg	1.1
55	schorsch	2.19
56			int
57			main( /* compute illum distributions using rtrace */
58			int argc,
59			char *argv[]
60			)
61	greg	1.1	{
62	greg	2.20	int nprocs = 1;
63	greg	1.3	FILE *fp;
64	greg	2.28	int rval;
65	greg	1.1	register int i;
66			/* set global arguments */
67	greg	1.3	gargv = argv;
68	greg	2.28	progname = gargv[0];
69			/* set up rendering defaults */
70			dstrsrc = 0.25;
71			directrelay = 3;
72			directvis = 0;
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			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			filter( /* process stream */
179			register FILE *infp,
180			char *name
181			)
182	greg	1.1	{
183			char buf[512];
184			FILE *pfp;
185			register int c;
186
187			while ((c = getc(infp)) != EOF) {
188			if (isspace(c))
189			continue;
190			if (c == '#') { /* comment/options */
191			buf[0] = c;
192			fgets(buf+1, sizeof(buf)-1, infp);
193	greg	1.2	xoptions(buf, name);
194	greg	1.1	} else if (c == '!') { /* command */
195			buf[0] = c;
196			fgetline(buf+1, sizeof(buf)-1, infp);
197			if ((pfp = popen(buf+1, "r")) == NULL) {
198			sprintf(errmsg, "cannot execute \"%s\"", buf);
199			error(SYSTEM, errmsg);
200			}
201	greg	1.2	filter(pfp, buf);
202	greg	1.1	pclose(pfp);
203			} else { /* object */
204			ungetc(c, infp);
205			xobject(infp, name);
206			}
207			}
208			}
209
210
211	schorsch	2.19	void
212			xoptions( /* process options in string s */
213			char *s,
214			char *nm
215			)
216	greg	1.1	{
217			extern FILE *freopen();
218			char buf[64];
219			int nerrs = 0;
220			register char *cp;
221
222	greg	1.2	if (strncmp(s, "#@mkillum", 9) \|\| !isspace(s[9])) {
223			fputs(s, stdout); /* not for us */
224	greg	1.1	return;
225	greg	1.2	}
226	greg	1.1	cp = s+10;
227			while (*cp) {
228			switch (*cp) {
229			case ' ':
230			case '\t':
231			case '\n':
232	greg	2.11	case '\r':
233			case '\f':
234	greg	1.1	cp++;
235			continue;
236			case 'm': /* material name */
237	greg	1.2	if (*++cp != '=')
238	greg	1.1	break;
239	greg	2.8	if (!++cp \|\| isspace(cp))
240	greg	1.2	break;
241	greg	1.1	atos(thisillum.matname, MAXSTR, cp);
242			cp = sskip(cp);
243			if (!(thisillum.flags & IL_DATCLB)) {
244			strcpy(thisillum.datafile, thisillum.matname);
245			thisillum.dfnum = 0;
246			}
247			continue;
248			case 'f': /* data file name */
249	greg	1.2	if (*++cp != '=')
250	greg	1.1	break;
251	greg	2.8	if (!++cp \|\| isspace(cp)) {
252	greg	1.6	strcpy(thisillum.datafile,thisillum.matname);
253	greg	1.10	thisillum.dfnum = 0;
254	greg	1.1	thisillum.flags &= ~IL_DATCLB;
255			continue;
256			}
257			atos(thisillum.datafile, MAXSTR, cp);
258			cp = sskip(cp);
259			thisillum.dfnum = 0;
260			thisillum.flags \|= IL_DATCLB;
261			continue;
262			case 'i': /* include material */
263			case 'e': /* exclude material */
264	greg	1.6	if (cp[1] != '=')
265	greg	1.1	break;
266	greg	1.7	matselect = (*cp == 'i') ? S_ELEM : S_COMPL;
267			cp += 2;
268			atos(matcheck, MAXSTR, cp);
269	greg	1.1	cp = sskip(cp);
270			continue;
271			case 'a': /* use everything */
272			cp = sskip(cp);
273			matselect = S_ALL;
274			continue;
275			case 'n': /* use nothing (passive) */
276			cp = sskip(cp);
277			matselect = S_NONE;
278			continue;
279			case 'c': /* color calculation */
280	greg	1.2	if (*++cp != '=')
281	greg	1.1	break;
282	greg	1.2	switch (*++cp) {
283	greg	1.1	case 'a': /* average */
284	greg	1.6	thisillum.flags = (thisillum.flags\|IL_COLAVG)
285			& ~IL_COLDST;
286	greg	1.1	break;
287			case 'd': /* distribution */
288	greg	1.5	thisillum.flags \|= (IL_COLDST\|IL_COLAVG);
289	greg	1.1	break;
290			case 'n': /* none */
291			thisillum.flags &= ~(IL_COLAVG\|IL_COLDST);
292			break;
293			default:
294			goto opterr;
295			}
296			cp = sskip(cp);
297			continue;
298			case 'd': /* point sample density */
299	greg	1.2	if (*++cp != '=')
300	greg	1.1	break;
301	greg	2.11	if (!isintd(++cp, " \t\n\r"))
302	greg	1.1	break;
303	greg	1.3	thisillum.sampdens = atoi(cp);
304	greg	1.1	cp = sskip(cp);
305			continue;
306			case 's': /* point super-samples */
307	greg	1.2	if (*++cp != '=')
308	greg	1.1	break;
309	greg	2.11	if (!isintd(++cp, " \t\n\r"))
310	greg	1.1	break;
311			thisillum.nsamps = atoi(cp);
312			cp = sskip(cp);
313			continue;
314	greg	1.3	case 'l': /* light sources */
315	greg	1.4	cp++;
316			if (*cp == '+')
317	greg	1.3	thisillum.flags \|= IL_LIGHT;
318	greg	1.4	else if (*cp == '-')
319			thisillum.flags &= ~IL_LIGHT;
320	greg	1.3	else
321	greg	1.4	break;
322			cp++;
323	greg	1.3	continue;
324	greg	1.12	case 'b': /* brightness */
325			if (*++cp != '=')
326			break;
327	greg	2.11	if (!isfltd(++cp, " \t\n\r"))
328	greg	1.12	break;
329			thisillum.minbrt = atof(cp);
330	greg	1.13	if (thisillum.minbrt < 0.)
331			thisillum.minbrt = 0.;
332	greg	1.12	cp = sskip(cp);
333			continue;
334	greg	1.1	case 'o': /* output file */
335	greg	1.2	if (*++cp != '=')
336	greg	1.1	break;
337	greg	2.8	if (!++cp \|\| isspace(cp))
338	greg	1.2	break;
339	greg	1.1	atos(buf, sizeof(buf), cp);
340			cp = sskip(cp);
341			if (freopen(buf, "w", stdout) == NULL) {
342			sprintf(errmsg,
343			"cannot open output file \"%s\"", buf);
344			error(SYSTEM, errmsg);
345			}
346			doneheader = 0;
347			continue;
348	greg	1.6	case '!': /* processed file! */
349	greg	1.7	sprintf(errmsg, "(%s): already processed!", nm);
350	greg	1.6	error(WARNING, errmsg);
351	greg	1.7	matselect = S_NONE;
352	greg	1.6	return;
353	greg	1.1	}
354			opterr: /* skip faulty option */
355	greg	2.9	while (cp && !isspace(cp))
356			cp++;
357	greg	1.1	nerrs++;
358			}
359	greg	1.2	/* print header? */
360			checkhead();
361			/* issue warnings? */
362	greg	1.1	if (nerrs) {
363			sprintf(errmsg, "(%s): %d error(s) in option line:",
364			nm, nerrs);
365			error(WARNING, errmsg);
366	greg	1.2	wputs(s);
367			printf("# %s: the following option line has %d error(s):\n",
368			progname, nerrs);
369	greg	1.1	}
370	greg	1.2	/* print pure comment */
371	greg	1.4	printf("# %s", s+2);
372	greg	1.9	}
373
374	schorsch	2.19	void
375			printopts(void) /* print out option default values */
376	greg	1.9	{
377	greg	1.11	printf("m=%-15s\t\t# material name\n", thisillum.matname);
378			printf("f=%-15s\t\t# data file name\n", thisillum.datafile);
379	greg	2.2	if (thisillum.flags & IL_COLAVG)
380			if (thisillum.flags & IL_COLDST)
381			printf("c=d\t\t\t\t# color distribution\n");
382			else
383			printf("c=a\t\t\t\t# color average\n");
384			else
385			printf("c=n\t\t\t\t# color none\n");
386			if (thisillum.flags & IL_LIGHT)
387			printf("l+\t\t\t\t# light type on\n");
388			else
389			printf("l-\t\t\t\t# light type off\n");
390	greg	1.9	printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens);
391			printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps);
392	greg	1.12	printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt);
393	greg	1.1	}
394	greg	1.2
395
396	schorsch	2.19	void
397			printhead( /* print out header */
398			register int ac,
399			register char **av
400			)
401	greg	1.2	{
402			putchar('#');
403			while (ac-- > 0) {
404			putchar(' ');
405			fputs(*av++, stdout);
406			}
407	greg	1.6	fputs("\n#@mkillum !\n", stdout);
408	greg	1.2	}
409
410
411	schorsch	2.19	void
412			xobject( /* translate an object from fp */
413			FILE *fp,
414			char *nm
415			)
416	greg	1.2	{
417			OBJREC thisobj;
418			char str[MAXSTR];
419			int doit;
420			/* read the object */
421			if (fgetword(thisillum.altmat, MAXSTR, fp) == NULL)
422			goto readerr;
423			if (fgetword(str, MAXSTR, fp) == NULL)
424			goto readerr;
425			/* is it an alias? */
426	greg	2.12	if (!strcmp(str, ALIASKEY)) {
427	greg	1.2	if (fgetword(str, MAXSTR, fp) == NULL)
428			goto readerr;
429	greg	2.12	printf("\n%s %s %s", thisillum.altmat, ALIASKEY, str);
430	greg	1.2	if (fgetword(str, MAXSTR, fp) == NULL)
431			goto readerr;
432	greg	1.4	printf("\t%s\n", str);
433	greg	1.2	return;
434			}
435	greg	1.4	thisobj.omod = OVOID; /* unused field */
436	greg	1.2	if ((thisobj.otype = otype(str)) < 0) {
437			sprintf(errmsg, "(%s): unknown type \"%s\"", nm, str);
438			error(USER, errmsg);
439			}
440			if (fgetword(str, MAXSTR, fp) == NULL)
441			goto readerr;
442			thisobj.oname = str;
443			if (readfargs(&thisobj.oargs, fp) != 1)
444			goto readerr;
445			thisobj.os = NULL;
446			/* check for translation */
447			switch (matselect) {
448			case S_NONE:
449			doit = 0;
450			break;
451			case S_ALL:
452	greg	1.4	doit = 1;
453	greg	1.2	break;
454			case S_ELEM:
455			doit = !strcmp(thisillum.altmat, matcheck);
456			break;
457			case S_COMPL:
458			doit = strcmp(thisillum.altmat, matcheck);
459			break;
460			}
461	greg	1.4	doit = doit && issurface(thisobj.otype);
462	greg	1.2	/* print header? */
463			checkhead();
464			/* process object */
465			if (doit)
466	greg	2.28	switch (thisobj.otype) {
467			case OBJ_FACE:
468			my_face(&thisobj, &thisillum, nm);
469			break;
470			case OBJ_SPHERE:
471			my_sphere(&thisobj, &thisillum, nm);
472			break;
473			case OBJ_RING:
474			my_ring(&thisobj, &thisillum, nm);
475			break;
476			default:
477			my_default(&thisobj, &thisillum, nm);
478			break;
479			}
480	greg	1.2	else
481			printobj(thisillum.altmat, &thisobj);
482			/* free arguments */
483			freefargs(&thisobj.oargs);
484			return;
485			readerr:
486	greg	2.28	sprintf(errmsg, "(%s): error reading input", nm);
487	greg	1.2	error(USER, errmsg);
488			}