src/gen/xform.c

/* Copyright (c) 1995 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  xform.c - program to transform object files.
 *              Transformations must preserve aspect ratio.
 *
 *     10/19/85
 *     11/6/86          Finally added error checking!
 */

#include  "standard.h"

#include  <ctype.h>

#include  "object.h"

#include  "otypes.h"

int  xac;                               /* global xform argument count */
char  **xav;                            /* global xform argument pointer */
int  xfa;                               /* start of xf arguments */

XF  tot;                                /* total transformation */
int  reverse;                           /* boolean true if scene mirrored */

int  invert = 0;                        /* boolean true to invert surfaces */

int  expand = 0;                        /* boolean true to expand commands */

char  *newmod = NULL;                   /* new modifier for surfaces */

char  *idprefix = NULL;                 /* prefix for object identifiers */

#define  ALIAS          NUMOTYPE        /* put alias at end of array */

#define  NUMTYPES       (NUMOTYPE+1)    /* total number of object types */

FUN  ofun[NUMTYPES] = INIT_OTYPE;       /* default types and actions */

short  tinvers[NUMOTYPE];               /* inverse types for surfaces */

extern char  *malloc(), *fgetword();

#define  progname  (xav[0])


main(argc, argv)                /* get transform options and transform file */
int  argc;
char  *argv[];
{
        FILE  *fopen();
        FILE  *fp;
        int  a;
                                        /* check for array */
        for (a = 1; a < argc; a++)
                if (!strcmp(argv[a], "-a"))
                        return(doarray(argc, argv, a));

        initotypes();

        for (a = 1; a < argc; a++) {
                if (argv[a][0] == '-')
                        switch (argv[a][1]) {
                        case 'm':
                                if (argv[a][2] || a+1 >= argc)
                                        break;
                                newmod = argv[++a];
                                continue;
                        case 'n':
                                if (argv[a][2] || a+1 >= argc)
                                        break;
                                idprefix = argv[++a];
                                continue;
                        case 'e':
                                if (argv[a][2])
                                        break;
                                expand = 1;
                                continue;
                        case 'I':
                                if (argv[a][2])
                                        break;
                                invert = 1;
                                continue;
                        }
                break;
        }

        xav = argv;
        xfa = a;

        a += xf(&tot, argc-a, argv+a);

        if (reverse = tot.sca < 0.0)
                tot.sca = -tot.sca;
        if (invert)
                reverse = !reverse;

        if (a < argc && argv[a][0] == '-') {
                fprintf(stderr, "%s: command line error at '%s'\n",
                                argv[0], argv[a]);
                exit(1);
        }

        xac = a;
                                        /* simple header */
        putchar('#');
        for (a = 0; a < xac; a++)
                printf(" %s", xav[a]);
        putchar('\n');
                                        /* transform input */
        if (xac == argc)
                xform("standard input", stdin);
        else
                for (a = xac; a < argc; a++) {
                        if ((fp = fopen(argv[a], "r")) == NULL) {
                                fprintf(stderr, "%s: cannot open \"%s\"\n",
                                                progname, argv[a]);
                                exit(1);
                        }
                        xform(argv[a], fp);
                        fclose(fp);
                }

        return(0);
}


doarray(ac, av, ai)                     /* make array */
char  **av;
int  ac, ai;
{
        char  *newav[256], **avp;
        char  newid[128], repts[32];
        char  *oldid = NULL;
        int  i, err;
        
        avp = newav+2;
        avp[0] = av[0];
        for (i = 1; i < ac; i++)
                if (!strcmp(av[i-1], "-n")) {
                        oldid = av[i];
                        avp[i] = newid;
                } else
                        avp[i] = av[i];
        avp[ai] = "-i";
        avp[ai+1] = repts;
        avp[i] = NULL;
        if (oldid == NULL) {
                newav[0] = av[0];
                newav[1] = "-n";
                newav[2] = newid;
                avp = newav;
                ac += 2;
        }
        err = 0;
        for (i = 0; i < atoi(av[ai+1]); i++) {
                if (oldid == NULL)
                        sprintf(newid, "a%d", i);
                else
                        sprintf(newid, "%s.%d", oldid, i);
                sprintf(repts, "%d", i);
                err |= main(ac, avp);
        }
        return(err);
}


xform(name, fin)                        /* transform stream by tot.xfm */
char  *name;
register FILE  *fin;
{
        int  nobjs = 0;
        register int  c;

        while ((c = getc(fin)) != EOF) {
                if (isspace(c))                         /* blank */
                        continue;
                if (c == '#') {                         /* comment */
                        putchar(c);
                        do {
                                if ((c = getc(fin)) == EOF)
                                        return;
                                putchar(c);
                        } while (c != '\n');
                } else if (c == '!') {                  /* command */
                        ungetc(c, fin);
                        xfcomm(name, fin);
                        nobjs++;
                } else {                                /* object */
                        ungetc(c, fin);
                        xfobject(name, fin);
                        nobjs++;
                }
        }
        if (nobjs == 0)
                fprintf(stderr, "%s: (%s): warning - empty file\n",
                                progname, name);
}


xfcomm(fname, fin)                      /* transform a command */
char  *fname;
FILE  *fin;
{
        FILE  *popen();
        char  *fgetline();
        FILE  *pin;
        char  buf[512];
        int  i;

        fgetline(buf, sizeof(buf), fin);
        if (expand) {
                if ((pin = popen(buf+1, "r")) == NULL) {
                        fprintf(stderr, "%s: (%s): cannot execute \"%s\"\n",
                                        progname, fname, buf);
                        exit(1);
                }
                xform(buf, pin);
                pclose(pin);
        } else {
                printf("\n%s", buf);
                if (xac > 1) {
                        printf(" | %s -e", xav[0]);
                        for (i = 1; i < xac; i++)
                                printf(" %s", xav[i]);
                }
                putchar('\n');
        }
}


xfobject(fname, fin)                            /* transform an object */
char  *fname;
FILE  *fin;
{
        extern char  *strcpy();
        char  typ[16], nam[MAXSTR];
        int  fn;
                                                /* modifier and type */
        strcpy(typ, "EOF");
        fgetword(nam, sizeof(nam), fin);
        fgetword(typ, sizeof(typ), fin);
        if ((fn = otype(typ)) < 0) {
                fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
                                progname, fname, typ);
                exit(1);
        }
        if (ismodifier(fn))
                printf("\n%s %s ", nam, typ);
        else
                printf("\n%s %s ", newmod != NULL ? newmod : nam,
                                invert ? ofun[tinvers[fn]].funame : typ);
                                                /* object name */
        fgetword(nam, sizeof(nam), fin);
        if (idprefix == NULL || ismodifier(fn))
                printf("%s\n", nam);
        else
                printf("%s.%s\n", idprefix, nam);
                                                /* transform arguments */
        if ((*ofun[fn].funp)(fin) < 0) {
                fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
                                progname, fname, ofun[fn].funame, nam);
                exit(1);
        }
}


o_default(fin)                  /* pass on arguments unchanged */
FILE  *fin;
{
        register int  i;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
                                        /* string arguments */
        printf("%d", fa.nsargs);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        printf("\n");
#ifdef  IARGS
                                        /* integer arguments */
        printf("%d", fa.niargs);
        for (i = 0; i < fa.niargs; i++)
                printf(" %d", fa.iarg[i]);
        printf("\n");
#else
        printf("0\n");
#endif
                                        /* float arguments */
        printf("%d", fa.nfargs);
        for (i = 0; i < fa.nfargs; i++)
                printf(" %18.12g", fa.farg[i]);
        printf("\n");
        freefargs(&fa);
        return(0);
}


addxform(fin)                   /* add xf arguments to strings */
FILE  *fin;
{
        register int  i;
        int  resetarr = 0;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
                                        /* string arguments */
        if (xac > xfa && strcmp(xav[xfa], "-i"))
                resetarr = 2;
        printf("%d", fa.nsargs + resetarr + xac-xfa);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        if (resetarr)
                printf(" -i 1");
        for (i = xfa; i < xac; i++)     /* add xf arguments */
                printf(" %s", xav[i]);
        printf("\n");
#ifdef  IARGS
                                        /* integer arguments */
        printf("%d", fa.niargs);
        for (i = 0; i < fa.niargs; i++)
                printf(" %d", fa.iarg[i]);
        printf("\n");
#else
        printf("0\n");
#endif
                                        /* float arguments */
        printf("%d", fa.nfargs);
        for (i = 0; i < fa.nfargs; i++)
                printf(" %18.12g", fa.farg[i]);
        printf("\n");
        freefargs(&fa);
        return(0);
}


int
otype(ofname)                   /* get object function number from its name */
register char  *ofname;
{
        register int  i;

        for (i = 0; i < NUMTYPES; i++)
                if (!strcmp(ofun[i].funame, ofname))
                        return(i);

        return(-1);             /* not found */
}


alias(fin)                      /* transfer alias */
FILE  *fin;
{
        char  aliasnm[MAXSTR];

        if (fgetword(aliasnm, MAXSTR, fin) == NULL)
                return(-1);
        printf("\t%s\n", aliasnm);
        return(0);
}


m_glow(fin)                     /* transform arguments for proximity light */
FILE  *fin;
{
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g",
                        fa.farg[0], fa.farg[1], fa.farg[2]);
        printf(" %18.12g\n", fa.farg[3] * tot.sca);
        freefargs(&fa);
        return(0);
}


m_spot(fin)                     /* transform arguments for spotlight */
FILE  *fin;
{
        FVECT  v;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 7)
                return(-1);
        printf("0\n0\n7");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
        multv3(v, fa.farg+4, tot.xfm);
        printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
        freefargs(&fa);
        return(0);
}


m_mist(fin)             /* transform arguments for mist */
FILE  *fin;
{
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g", fa.farg[0]/tot.sca,
                        fa.farg[1]/tot.sca, fa.farg[2]/tot.sca);
        printf(" %18.12g\n", fa.farg[3]);
        freefargs(&fa);
        return(0);
}


m_dielectric(fin)               /* transform arguments for dielectric */
FILE  *fin;
{
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 5)
                return(-1);
        printf("0\n0\n5");
        printf(" %18.12g %18.12g %18.12g",
                pow(fa.farg[0], 1.0/tot.sca),
                pow(fa.farg[1], 1.0/tot.sca),
                pow(fa.farg[2], 1.0/tot.sca));
        printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
        freefargs(&fa);
        return(0);
}


m_interface(fin)                /* transform arguments for interface */
FILE  *fin;
{
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);
        printf("0\n0\n8\n");
        printf("%18.12g %18.12g %18.12g",
                pow(fa.farg[0], 1.0/tot.sca),
                pow(fa.farg[1], 1.0/tot.sca),
                pow(fa.farg[2], 1.0/tot.sca));
        printf(" %18.12g\n", fa.farg[3]);
        printf("%18.12g %18.12g %18.12g",
                pow(fa.farg[4], 1.0/tot.sca),
                pow(fa.farg[5], 1.0/tot.sca),
                pow(fa.farg[6], 1.0/tot.sca));
        printf(" %18.12g\n", fa.farg[7]);
        freefargs(&fa);
        return(0);
}


text(fin)                       /* transform text arguments */
FILE  *fin;
{
        int  i;
        FVECT  v;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nfargs < 9)
                return(-1);
                                        /* string arguments */
        printf("%d", fa.nsargs);
        for (i = 0; i < fa.nsargs; i++)
                printf(" %s", fa.sarg[i]);
        printf("\n0\n%d\n", fa.nfargs);
                                        /* anchor point */
        multp3(v, fa.farg, tot.xfm);
        printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
                                        /* right vector */
        multv3(v, fa.farg+3, tot.xfm);
        printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
                                        /* down vector */
        multv3(v, fa.farg+6, tot.xfm);
        printf(" %18.12g %18.12g %18.12g", v[0], v[1], v[2]);
                                        /* remaining arguments */
        for (i = 9; i < fa.nfargs; i++) {
                if (i%3 == 0)
                        putchar('\n');
                printf(" %18.12g", fa.farg[i]);
        }
        putchar('\n');
        freefargs(&fa);
        return(0);
}


o_source(fin)                   /* transform source arguments */
FILE  *fin;
{
        FVECT  dv;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
                                        /* transform direction vector */
        multv3(dv, fa.farg, tot.xfm);
                                        /* output */
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        dv[0], dv[1], dv[2], fa.farg[3]);
        freefargs(&fa);
        return(0);
}


o_sphere(fin)                   /* transform sphere arguments */
FILE  *fin;
{
        FVECT  cent;
        double  rad;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 4)
                return(-1);
        
        multp3(cent, fa.farg, tot.xfm); /* transform center */
        
        rad = fa.farg[3] * tot.sca;             /* scale radius */
        
        printf("0\n0\n4");
        printf(" %18.12g %18.12g %18.12g %18.12g\n",
                        cent[0], cent[1], cent[2], rad);
        freefargs(&fa);
        return(0);
}


o_face(fin)                     /* transform face arguments */
FILE  *fin;
{
        FVECT  p;
        register int  i;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs % 3)
                return(-1);
        
        printf("0\n0\n%d\n", fa.nfargs);
        
        for (i = 0; i < fa.nfargs; i += 3) {
                if (reverse)
                        multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
                else
                        multp3(p, fa.farg+i, tot.xfm);
                printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
        }
        freefargs(&fa);
        return(0);
}


o_cone(fin)                     /* transform cone and cup arguments */
FILE  *fin;
{
        FVECT  p0, p1;
        double  r0, r1;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);

        printf("0\n0\n8\n");

        multp3(p0, fa.farg, tot.xfm);
        multp3(p1, fa.farg+3, tot.xfm);
        r0 = fa.farg[6] * tot.sca;
        r1 = fa.farg[7] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
        printf(" %18.12g %18.12g\n", r0, r1);

        freefargs(&fa);
        return(0);
}


o_cylinder(fin)                 /* transform cylinder and tube arguments */
FILE  *fin;
{
        FVECT  p0, p1;
        double  rad;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 7)
                return(-1);

        printf("0\n0\n7\n");

        multp3(p0, fa.farg, tot.xfm);
        multp3(p1, fa.farg+3, tot.xfm);
        rad = fa.farg[6] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
        printf(" %18.12g\n", rad);
        freefargs(&fa);
        return(0);
}


o_ring(fin)                     /* transform ring arguments */
FILE  *fin;
{
        FVECT  p0, pd;
        double  r0, r1;
        FUNARGS  fa;

        if (readfargs(&fa, fin) != 1)
                return(-1);
        if (fa.nsargs != 0  || fa.nfargs != 8)
                return(-1);

        printf("0\n0\n8\n");

        multp3(p0, fa.farg, tot.xfm);
        multv3(pd, fa.farg+3, tot.xfm);
        if (invert) {
                pd[0] = -pd[0];
                pd[1] = -pd[1];
                pd[2] = -pd[2];
        }
        r0 = fa.farg[6] * tot.sca;
        r1 = fa.farg[7] * tot.sca;
        printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
        printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
        printf(" %18.12g %18.12g\n", r0, r1);
        freefargs(&fa);
        return(0);
}


initotypes()                    /* initialize ofun[] array */
{
        register int  i;

        if (ofun[OBJ_SOURCE].funp == o_source)
                return;                 /* done already */
                                        /* alias is additional */
        ofun[ALIAS].funame = ALIASID;
        ofun[ALIAS].flags = 0;
                                        /* functions get new transform */
        for (i = 0; i < NUMTYPES; i++)
                if (hasfunc(i))
                        ofun[i].funp = addxform;
                                        /* special cases */
        ofun[OBJ_SOURCE].funp = o_source;
        ofun[OBJ_SPHERE].funp =
        ofun[OBJ_BUBBLE].funp = o_sphere;
        ofun[OBJ_FACE].funp = o_face;
        ofun[OBJ_CONE].funp =
        ofun[OBJ_CUP].funp = o_cone;
        ofun[OBJ_CYLINDER].funp =
        ofun[OBJ_TUBE].funp = o_cylinder;
        ofun[OBJ_RING].funp = o_ring;
        ofun[OBJ_INSTANCE].funp = addxform;
        ofun[MAT_GLOW].funp = m_glow;
        ofun[MAT_SPOT].funp = m_spot;
        ofun[MAT_DIELECTRIC].funp = m_dielectric;
        ofun[MAT_INTERFACE].funp = m_interface;
        ofun[MAT_MIST].funp = m_mist;
        ofun[PAT_CTEXT].funp =
        ofun[PAT_BTEXT].funp =
        ofun[MIX_TEXT].funp = text;
        ofun[ALIAS].funp = alias;
                                        /* surface inverses */
        tinvers[OBJ_FACE] = OBJ_FACE;
        tinvers[OBJ_SOURCE] = OBJ_SOURCE;
        tinvers[OBJ_CONE] = OBJ_CUP;
        tinvers[OBJ_CUP] = OBJ_CONE;
        tinvers[OBJ_SPHERE] = OBJ_BUBBLE;
        tinvers[OBJ_BUBBLE] = OBJ_SPHERE;
        tinvers[OBJ_RING] = OBJ_RING;
        tinvers[OBJ_CYLINDER] = OBJ_TUBE;
        tinvers[OBJ_TUBE] = OBJ_CYLINDER;
        tinvers[OBJ_INSTANCE] = OBJ_INSTANCE;   /* oh, well */
}
Revision:	2.10
Committed:	Fri Dec 8 18:29:06 1995 UTC (28 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+19 -0 lines
Log Message:	added M_MIST type
#	User	Rev	Content
1	greg	2.9	/* Copyright (c) 1995 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* xform.c - program to transform object files.
9			* Transformations must preserve aspect ratio.
10			*
11			* 10/19/85
12			* 11/6/86 Finally added error checking!
13			*/
14
15	greg	1.12	#include "standard.h"
16	greg	1.1
17			#include <ctype.h>
18
19	greg	1.14	#include "object.h"
20
21	greg	1.11	#include "otypes.h"
22	greg	1.1
23			int xac; /* global xform argument count */
24			char *xav; / global xform argument pointer */
25			int xfa; /* start of xf arguments */
26
27	greg	1.12	XF tot; /* total transformation */
28	greg	1.16	int reverse; /* boolean true if scene mirrored */
29	greg	1.1
30	greg	1.16	int invert = 0; /* boolean true to invert surfaces */
31
32	greg	1.1	int expand = 0; /* boolean true to expand commands */
33
34	greg	1.13	char newmod = NULL; / new modifier for surfaces */
35
36	greg	1.1	char idprefix = NULL; / prefix for object identifiers */
37
38	greg	2.6	#define ALIAS NUMOTYPE /* put alias at end of array */
39	greg	1.1
40	greg	2.6	#define NUMTYPES (NUMOTYPE+1) /* total number of object types */
41	greg	1.1
42	greg	1.11	FUN ofun[NUMTYPES] = INIT_OTYPE; /* default types and actions */
43	greg	1.1
44	greg	1.16	short tinvers[NUMOTYPE]; /* inverse types for surfaces */
45
46	greg	1.15	extern char malloc(), fgetword();
47	greg	1.1
48	greg	2.6	#define progname (xav[0])
49	greg	1.1
50
51			main(argc, argv) /* get transform options and transform file */
52			int argc;
53			char *argv[];
54			{
55			FILE *fopen();
56			FILE *fp;
57			int a;
58	greg	1.8	/* check for array */
59			for (a = 1; a < argc; a++)
60			if (!strcmp(argv[a], "-a"))
61			return(doarray(argc, argv, a));
62	greg	1.1
63	greg	1.11	initotypes();
64
65	greg	1.1	for (a = 1; a < argc; a++) {
66			if (argv[a][0] == '-')
67			switch (argv[a][1]) {
68	greg	1.13	case 'm':
69			if (argv[a][2] \|\| a+1 >= argc)
70			break;
71			newmod = argv[++a];
72			continue;
73	greg	1.1	case 'n':
74	greg	1.9	if (argv[a][2] \|\| a+1 >= argc)
75			break;
76	greg	1.1	idprefix = argv[++a];
77			continue;
78			case 'e':
79	greg	1.9	if (argv[a][2])
80			break;
81	greg	1.1	expand = 1;
82			continue;
83	greg	1.16	case 'I':
84			if (argv[a][2])
85			break;
86			invert = 1;
87			continue;
88	greg	1.1	}
89			break;
90			}
91
92	greg	1.8	xav = argv;
93	greg	1.1	xfa = a;
94
95	greg	1.12	a += xf(&tot, argc-a, argv+a);
96	greg	1.1
97	greg	1.12	if (reverse = tot.sca < 0.0)
98			tot.sca = -tot.sca;
99	greg	1.16	if (invert)
100			reverse = !reverse;
101	greg	1.1
102	greg	1.9	if (a < argc && argv[a][0] == '-') {
103			fprintf(stderr, "%s: command line error at '%s'\n",
104			argv[0], argv[a]);
105			exit(1);
106			}
107	greg	1.10
108	greg	1.1	xac = a;
109	greg	1.10	/* simple header */
110			putchar('#');
111	greg	1.1	for (a = 0; a < xac; a++)
112			printf(" %s", xav[a]);
113			putchar('\n');
114	greg	1.10	/* transform input */
115			if (xac == argc)
116	greg	1.1	xform("standard input", stdin);
117			else
118	greg	1.10	for (a = xac; a < argc; a++) {
119	greg	1.1	if ((fp = fopen(argv[a], "r")) == NULL) {
120			fprintf(stderr, "%s: cannot open \"%s\"\n",
121			progname, argv[a]);
122			exit(1);
123			}
124			xform(argv[a], fp);
125			fclose(fp);
126			}
127
128	greg	1.8	return(0);
129			}
130
131
132			doarray(ac, av, ai) /* make array */
133			char **av;
134			int ac, ai;
135			{
136			char newav[256], *avp;
137			char newid[128], repts[32];
138			char *oldid = NULL;
139			int i, err;
140
141			avp = newav+2;
142			avp[0] = av[0];
143			for (i = 1; i < ac; i++)
144			if (!strcmp(av[i-1], "-n")) {
145			oldid = av[i];
146			avp[i] = newid;
147			} else
148			avp[i] = av[i];
149			avp[ai] = "-i";
150			avp[ai+1] = repts;
151			avp[i] = NULL;
152			if (oldid == NULL) {
153			newav[0] = av[0];
154			newav[1] = "-n";
155			newav[2] = newid;
156			avp = newav;
157			ac += 2;
158			}
159			err = 0;
160			for (i = 0; i < atoi(av[ai+1]); i++) {
161			if (oldid == NULL)
162			sprintf(newid, "a%d", i);
163			else
164			sprintf(newid, "%s.%d", oldid, i);
165			sprintf(repts, "%d", i);
166			err \|= main(ac, avp);
167			}
168			return(err);
169	greg	1.1	}
170
171
172	greg	1.12	xform(name, fin) /* transform stream by tot.xfm */
173	greg	1.1	char *name;
174			register FILE *fin;
175			{
176	greg	2.8	int nobjs = 0;
177	greg	1.1	register int c;
178
179			while ((c = getc(fin)) != EOF) {
180			if (isspace(c)) /* blank */
181			continue;
182			if (c == '#') { /* comment */
183			putchar(c);
184			do {
185			if ((c = getc(fin)) == EOF)
186			return;
187			putchar(c);
188			} while (c != '\n');
189			} else if (c == '!') { /* command */
190			ungetc(c, fin);
191	greg	1.7	xfcomm(name, fin);
192	greg	2.8	nobjs++;
193	greg	1.1	} else { /* object */
194			ungetc(c, fin);
195			xfobject(name, fin);
196	greg	2.8	nobjs++;
197	greg	1.1	}
198			}
199	greg	2.8	if (nobjs == 0)
200			fprintf(stderr, "%s: (%s): warning - empty file\n",
201			progname, name);
202	greg	1.1	}
203
204
205	greg	1.7	xfcomm(fname, fin) /* transform a command */
206	greg	2.6	char *fname;
207	greg	1.1	FILE *fin;
208			{
209			FILE *popen();
210	greg	1.7	char *fgetline();
211	greg	1.1	FILE *pin;
212			char buf[512];
213	greg	1.7	int i;
214	greg	1.1
215	greg	1.7	fgetline(buf, sizeof(buf), fin);
216			if (expand) {
217	greg	2.4	if ((pin = popen(buf+1, "r")) == NULL) {
218			fprintf(stderr, "%s: (%s): cannot execute \"%s\"\n",
219			progname, fname, buf);
220			exit(1);
221	greg	1.7	}
222	greg	2.4	xform(buf, pin);
223			pclose(pin);
224	greg	1.7	} else {
225	greg	1.10	printf("\n%s", buf);
226			if (xac > 1) {
227			printf(" \| %s -e", xav[0]);
228			for (i = 1; i < xac; i++)
229			printf(" %s", xav[i]);
230			}
231	greg	1.7	putchar('\n');
232	greg	1.1	}
233			}
234
235
236			xfobject(fname, fin) /* transform an object */
237			char *fname;
238			FILE *fin;
239			{
240	greg	1.16	extern char *strcpy();
241	greg	1.13	char typ[16], nam[MAXSTR];
242	greg	1.1	int fn;
243	greg	1.13	/* modifier and type */
244	greg	1.15	strcpy(typ, "EOF");
245			fgetword(nam, sizeof(nam), fin);
246			fgetword(typ, sizeof(typ), fin);
247	greg	1.13	if ((fn = otype(typ)) < 0) {
248	greg	1.1	fprintf(stderr, "%s: (%s): unknown object type \"%s\"\n",
249	greg	1.13	progname, fname, typ);
250	greg	1.1	exit(1);
251			}
252	greg	2.3	if (ismodifier(fn))
253			printf("\n%s %s ", nam, typ);
254			else
255	greg	1.16	printf("\n%s %s ", newmod != NULL ? newmod : nam,
256			invert ? ofun[tinvers[fn]].funame : typ);
257	greg	1.13	/* object name */
258	greg	1.15	fgetword(nam, sizeof(nam), fin);
259	greg	2.3	if (idprefix == NULL \|\| ismodifier(fn))
260			printf("%s\n", nam);
261			else
262	greg	1.13	printf("%s.%s\n", idprefix, nam);
263			/* transform arguments */
264	greg	1.1	if ((*ofun[fn].funp)(fin) < 0) {
265			fprintf(stderr, "%s: (%s): bad %s \"%s\"\n",
266	greg	1.13	progname, fname, ofun[fn].funame, nam);
267	greg	1.1	exit(1);
268			}
269			}
270
271
272	greg	1.11	o_default(fin) /* pass on arguments unchanged */
273	greg	1.1	FILE *fin;
274			{
275			register int i;
276	greg	2.6	FUNARGS fa;
277	greg	1.1
278	greg	1.15	if (readfargs(&fa, fin) != 1)
279	greg	1.1	return(-1);
280			/* string arguments */
281	greg	1.14	printf("%d", fa.nsargs);
282			for (i = 0; i < fa.nsargs; i++)
283			printf(" %s", fa.sarg[i]);
284	greg	1.1	printf("\n");
285	greg	2.6	#ifdef IARGS
286	greg	1.1	/* integer arguments */
287	greg	1.14	printf("%d", fa.niargs);
288			for (i = 0; i < fa.niargs; i++)
289			printf(" %d", fa.iarg[i]);
290	greg	1.1	printf("\n");
291	greg	1.15	#else
292			printf("0\n");
293	greg	1.14	#endif
294	greg	1.1	/* float arguments */
295	greg	1.14	printf("%d", fa.nfargs);
296			for (i = 0; i < fa.nfargs; i++)
297			printf(" %18.12g", fa.farg[i]);
298	greg	1.1	printf("\n");
299	greg	1.14	freefargs(&fa);
300	greg	1.1	return(0);
301			}
302
303
304			addxform(fin) /* add xf arguments to strings */
305			FILE *fin;
306			{
307			register int i;
308	greg	2.2	int resetarr = 0;
309	greg	2.6	FUNARGS fa;
310	greg	1.1
311	greg	1.15	if (readfargs(&fa, fin) != 1)
312	greg	1.1	return(-1);
313			/* string arguments */
314	greg	2.2	if (xac > xfa && strcmp(xav[xfa], "-i"))
315			resetarr = 2;
316			printf("%d", fa.nsargs + resetarr + xac-xfa);
317	greg	1.14	for (i = 0; i < fa.nsargs; i++)
318			printf(" %s", fa.sarg[i]);
319	greg	2.2	if (resetarr)
320			printf(" -i 1");
321	greg	1.1	for (i = xfa; i < xac; i++) /* add xf arguments */
322			printf(" %s", xav[i]);
323			printf("\n");
324	greg	2.6	#ifdef IARGS
325	greg	1.1	/* integer arguments */
326	greg	1.14	printf("%d", fa.niargs);
327			for (i = 0; i < fa.niargs; i++)
328			printf(" %d", fa.iarg[i]);
329	greg	1.1	printf("\n");
330	greg	1.15	#else
331			printf("0\n");
332	greg	1.14	#endif
333	greg	1.1	/* float arguments */
334	greg	1.14	printf("%d", fa.nfargs);
335			for (i = 0; i < fa.nfargs; i++)
336			printf(" %18.12g", fa.farg[i]);
337	greg	1.1	printf("\n");
338	greg	1.14	freefargs(&fa);
339	greg	1.1	return(0);
340			}
341
342
343			int
344			otype(ofname) /* get object function number from its name */
345			register char *ofname;
346			{
347			register int i;
348
349	greg	1.11	for (i = 0; i < NUMTYPES; i++)
350	greg	1.1	if (!strcmp(ofun[i].funame, ofname))
351			return(i);
352
353			return(-1); /* not found */
354			}
355
356
357			alias(fin) /* transfer alias */
358			FILE *fin;
359			{
360	greg	1.12	char aliasnm[MAXSTR];
361	greg	1.1
362	greg	1.15	if (fgetword(aliasnm, MAXSTR, fin) == NULL)
363	greg	1.1	return(-1);
364	greg	1.12	printf("\t%s\n", aliasnm);
365	greg	1.5	return(0);
366			}
367
368
369			m_glow(fin) /* transform arguments for proximity light */
370			FILE *fin;
371			{
372	greg	2.6	FUNARGS fa;
373	greg	1.5
374	greg	1.15	if (readfargs(&fa, fin) != 1)
375	greg	1.5	return(-1);
376	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
377	greg	1.5	return(-1);
378			printf("0\n0\n4");
379			printf(" %18.12g %18.12g %18.12g",
380	greg	1.14	fa.farg[0], fa.farg[1], fa.farg[2]);
381			printf(" %18.12g\n", fa.farg[3] * tot.sca);
382			freefargs(&fa);
383	greg	1.5	return(0);
384			}
385
386
387			m_spot(fin) /* transform arguments for spotlight */
388			FILE *fin;
389			{
390	greg	1.17	FVECT v;
391	greg	2.6	FUNARGS fa;
392	greg	1.5
393	greg	1.15	if (readfargs(&fa, fin) != 1)
394	greg	1.5	return(-1);
395	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 7)
396	greg	1.5	return(-1);
397			printf("0\n0\n7");
398			printf(" %18.12g %18.12g %18.12g %18.12g\n",
399	greg	1.14	fa.farg[0], fa.farg[1], fa.farg[2], fa.farg[3]);
400			multv3(v, fa.farg+4, tot.xfm);
401	greg	1.5	printf("\t%18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
402	greg	1.14	freefargs(&fa);
403	greg	1.1	return(0);
404			}
405
406
407	greg	2.10	m_mist(fin) /* transform arguments for mist */
408			FILE *fin;
409			{
410			FUNARGS fa;
411
412			if (readfargs(&fa, fin) != 1)
413			return(-1);
414			if (fa.nsargs != 0 \|\| fa.nfargs != 4)
415			return(-1);
416			printf("0\n0\n4");
417			printf(" %18.12g %18.12g %18.12g", fa.farg[0]/tot.sca,
418			fa.farg[1]/tot.sca, fa.farg[2]/tot.sca);
419			printf(" %18.12g\n", fa.farg[3]);
420			freefargs(&fa);
421			return(0);
422			}
423
424
425	greg	1.1	m_dielectric(fin) /* transform arguments for dielectric */
426			FILE *fin;
427			{
428	greg	2.6	FUNARGS fa;
429	greg	1.1
430	greg	1.15	if (readfargs(&fa, fin) != 1)
431	greg	1.1	return(-1);
432	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 5)
433	greg	1.1	return(-1);
434			printf("0\n0\n5");
435			printf(" %18.12g %18.12g %18.12g",
436	greg	1.14	pow(fa.farg[0], 1.0/tot.sca),
437			pow(fa.farg[1], 1.0/tot.sca),
438			pow(fa.farg[2], 1.0/tot.sca));
439			printf(" %18.12g %18.12g\n", fa.farg[3], fa.farg[4]);
440			freefargs(&fa);
441	greg	1.1	return(0);
442			}
443
444
445			m_interface(fin) /* transform arguments for interface */
446			FILE *fin;
447			{
448	greg	2.6	FUNARGS fa;
449	greg	1.1
450	greg	1.15	if (readfargs(&fa, fin) != 1)
451	greg	1.1	return(-1);
452	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
453	greg	1.1	return(-1);
454			printf("0\n0\n8\n");
455			printf("%18.12g %18.12g %18.12g",
456	greg	1.14	pow(fa.farg[0], 1.0/tot.sca),
457			pow(fa.farg[1], 1.0/tot.sca),
458			pow(fa.farg[2], 1.0/tot.sca));
459			printf(" %18.12g\n", fa.farg[3]);
460	greg	1.1	printf("%18.12g %18.12g %18.12g",
461	greg	1.14	pow(fa.farg[4], 1.0/tot.sca),
462			pow(fa.farg[5], 1.0/tot.sca),
463			pow(fa.farg[6], 1.0/tot.sca));
464			printf(" %18.12g\n", fa.farg[7]);
465			freefargs(&fa);
466	greg	1.1	return(0);
467			}
468
469
470			text(fin) /* transform text arguments */
471			FILE *fin;
472			{
473			int i;
474	greg	1.17	FVECT v;
475	greg	2.6	FUNARGS fa;
476	greg	1.1
477	greg	1.15	if (readfargs(&fa, fin) != 1)
478	greg	1.1	return(-1);
479	greg	2.5	if (fa.nfargs < 9)
480	greg	1.1	return(-1);
481			/* string arguments */
482	greg	1.14	printf("%d", fa.nsargs);
483			for (i = 0; i < fa.nsargs; i++)
484			printf(" %s", fa.sarg[i]);
485			printf("\n0\n%d\n", fa.nfargs);
486	greg	1.1	/* anchor point */
487	greg	1.14	multp3(v, fa.farg, tot.xfm);
488	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
489			/* right vector */
490	greg	1.14	multv3(v, fa.farg+3, tot.xfm);
491	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", v[0], v[1], v[2]);
492			/* down vector */
493	greg	1.14	multv3(v, fa.farg+6, tot.xfm);
494	greg	2.5	printf(" %18.12g %18.12g %18.12g", v[0], v[1], v[2]);
495			/* remaining arguments */
496			for (i = 9; i < fa.nfargs; i++) {
497			if (i%3 == 0)
498			putchar('\n');
499			printf(" %18.12g", fa.farg[i]);
500	greg	1.1	}
501	greg	2.5	putchar('\n');
502	greg	1.14	freefargs(&fa);
503	greg	1.1	return(0);
504			}
505
506
507			o_source(fin) /* transform source arguments */
508			FILE *fin;
509			{
510	greg	1.17	FVECT dv;
511	greg	2.6	FUNARGS fa;
512	greg	1.1
513	greg	1.15	if (readfargs(&fa, fin) != 1)
514	greg	1.1	return(-1);
515	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
516	greg	1.1	return(-1);
517			/* transform direction vector */
518	greg	1.14	multv3(dv, fa.farg, tot.xfm);
519	greg	1.1	/* output */
520			printf("0\n0\n4");
521			printf(" %18.12g %18.12g %18.12g %18.12g\n",
522	greg	1.14	dv[0], dv[1], dv[2], fa.farg[3]);
523			freefargs(&fa);
524	greg	1.1	return(0);
525			}
526
527
528			o_sphere(fin) /* transform sphere arguments */
529			FILE *fin;
530			{
531	greg	1.17	FVECT cent;
532	greg	2.6	double rad;
533			FUNARGS fa;
534	greg	1.1
535	greg	1.15	if (readfargs(&fa, fin) != 1)
536	greg	1.1	return(-1);
537	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 4)
538	greg	1.1	return(-1);
539
540	greg	2.6	multp3(cent, fa.farg, tot.xfm); /* transform center */
541	greg	1.1
542	greg	1.14	rad = fa.farg[3] * tot.sca; /* scale radius */
543	greg	1.1
544			printf("0\n0\n4");
545			printf(" %18.12g %18.12g %18.12g %18.12g\n",
546			cent[0], cent[1], cent[2], rad);
547	greg	1.14	freefargs(&fa);
548	greg	1.1	return(0);
549			}
550
551
552			o_face(fin) /* transform face arguments */
553			FILE *fin;
554			{
555	greg	1.17	FVECT p;
556	greg	1.1	register int i;
557	greg	2.6	FUNARGS fa;
558	greg	1.1
559	greg	1.15	if (readfargs(&fa, fin) != 1)
560	greg	1.1	return(-1);
561	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs % 3)
562	greg	1.1	return(-1);
563
564	greg	1.14	printf("0\n0\n%d\n", fa.nfargs);
565	greg	1.1
566	greg	1.14	for (i = 0; i < fa.nfargs; i += 3) {
567	greg	1.1	if (reverse)
568	greg	1.14	multp3(p, fa.farg+(fa.nfargs-i-3), tot.xfm);
569	greg	1.1	else
570	greg	1.14	multp3(p, fa.farg+i, tot.xfm);
571	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p[0], p[1], p[2]);
572			}
573	greg	1.14	freefargs(&fa);
574	greg	1.1	return(0);
575			}
576
577
578			o_cone(fin) /* transform cone and cup arguments */
579			FILE *fin;
580			{
581	greg	1.17	FVECT p0, p1;
582	greg	2.6	double r0, r1;
583			FUNARGS fa;
584	greg	1.1
585	greg	1.15	if (readfargs(&fa, fin) != 1)
586	greg	1.1	return(-1);
587	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
588	greg	1.1	return(-1);
589
590			printf("0\n0\n8\n");
591
592	greg	1.14	multp3(p0, fa.farg, tot.xfm);
593			multp3(p1, fa.farg+3, tot.xfm);
594			r0 = fa.farg[6] * tot.sca;
595			r1 = fa.farg[7] * tot.sca;
596	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
597			printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
598			printf(" %18.12g %18.12g\n", r0, r1);
599
600	greg	1.14	freefargs(&fa);
601	greg	1.1	return(0);
602			}
603
604
605			o_cylinder(fin) /* transform cylinder and tube arguments */
606			FILE *fin;
607			{
608	greg	1.17	FVECT p0, p1;
609	greg	2.6	double rad;
610			FUNARGS fa;
611	greg	1.1
612	greg	1.15	if (readfargs(&fa, fin) != 1)
613	greg	1.1	return(-1);
614	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 7)
615	greg	1.1	return(-1);
616
617			printf("0\n0\n7\n");
618
619	greg	1.14	multp3(p0, fa.farg, tot.xfm);
620			multp3(p1, fa.farg+3, tot.xfm);
621			rad = fa.farg[6] * tot.sca;
622	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
623			printf(" %18.12g %18.12g %18.12g\n", p1[0], p1[1], p1[2]);
624			printf(" %18.12g\n", rad);
625	greg	1.14	freefargs(&fa);
626	greg	1.1	return(0);
627			}
628
629
630			o_ring(fin) /* transform ring arguments */
631			FILE *fin;
632			{
633	greg	1.17	FVECT p0, pd;
634	greg	2.6	double r0, r1;
635			FUNARGS fa;
636	greg	1.1
637	greg	1.15	if (readfargs(&fa, fin) != 1)
638	greg	1.1	return(-1);
639	greg	1.14	if (fa.nsargs != 0 \|\| fa.nfargs != 8)
640	greg	1.1	return(-1);
641
642			printf("0\n0\n8\n");
643
644	greg	1.14	multp3(p0, fa.farg, tot.xfm);
645			multv3(pd, fa.farg+3, tot.xfm);
646	greg	1.16	if (invert) {
647			pd[0] = -pd[0];
648			pd[1] = -pd[1];
649			pd[2] = -pd[2];
650			}
651	greg	1.14	r0 = fa.farg[6] * tot.sca;
652			r1 = fa.farg[7] * tot.sca;
653	greg	1.1	printf(" %18.12g %18.12g %18.12g\n", p0[0], p0[1], p0[2]);
654			printf(" %18.12g %18.12g %18.12g\n", pd[0], pd[1], pd[2]);
655			printf(" %18.12g %18.12g\n", r0, r1);
656	greg	1.14	freefargs(&fa);
657	greg	1.1	return(0);
658	greg	1.11	}
659
660
661			initotypes() /* initialize ofun[] array */
662			{
663			register int i;
664
665			if (ofun[OBJ_SOURCE].funp == o_source)
666			return; /* done already */
667			/* alias is additional */
668			ofun[ALIAS].funame = ALIASID;
669			ofun[ALIAS].flags = 0;
670			/* functions get new transform */
671			for (i = 0; i < NUMTYPES; i++)
672			if (hasfunc(i))
673			ofun[i].funp = addxform;
674			/* special cases */
675			ofun[OBJ_SOURCE].funp = o_source;
676			ofun[OBJ_SPHERE].funp =
677			ofun[OBJ_BUBBLE].funp = o_sphere;
678			ofun[OBJ_FACE].funp = o_face;
679			ofun[OBJ_CONE].funp =
680			ofun[OBJ_CUP].funp = o_cone;
681			ofun[OBJ_CYLINDER].funp =
682			ofun[OBJ_TUBE].funp = o_cylinder;
683			ofun[OBJ_RING].funp = o_ring;
684			ofun[OBJ_INSTANCE].funp = addxform;
685			ofun[MAT_GLOW].funp = m_glow;
686			ofun[MAT_SPOT].funp = m_spot;
687			ofun[MAT_DIELECTRIC].funp = m_dielectric;
688			ofun[MAT_INTERFACE].funp = m_interface;
689	greg	2.10	ofun[MAT_MIST].funp = m_mist;
690	greg	1.11	ofun[PAT_CTEXT].funp =
691			ofun[PAT_BTEXT].funp =
692			ofun[MIX_TEXT].funp = text;
693			ofun[ALIAS].funp = alias;
694	greg	1.16	/* surface inverses */
695	greg	2.9	tinvers[OBJ_FACE] = OBJ_FACE;
696	greg	1.16	tinvers[OBJ_SOURCE] = OBJ_SOURCE;
697			tinvers[OBJ_CONE] = OBJ_CUP;
698			tinvers[OBJ_CUP] = OBJ_CONE;
699			tinvers[OBJ_SPHERE] = OBJ_BUBBLE;
700			tinvers[OBJ_BUBBLE] = OBJ_SPHERE;
701			tinvers[OBJ_RING] = OBJ_RING;
702			tinvers[OBJ_CYLINDER] = OBJ_TUBE;
703			tinvers[OBJ_TUBE] = OBJ_CYLINDER;
704			tinvers[OBJ_INSTANCE] = OBJ_INSTANCE; /* oh, well */
705	greg	1.1	}