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/* Copyright (c) 1994 Regents of the University of California */ | 
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#ifndef lint | 
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static char SCCSid[] = "$SunId$ LBL"; | 
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static const char       RCSid[] = "$Id$"; | 
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#endif | 
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/* | 
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 * Convert Radiance scene description to MGF | 
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 */ | 
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#include <stdio.h> | 
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#include <math.h> | 
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#include <ctype.h> | 
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#include <string.h> | 
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#include "fvect.h" | 
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#include <stdio.h> | 
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 | 
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#include "platform.h" | 
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#include "rtmath.h" | 
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#include "rtio.h" | 
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#include "rtprocess.h" | 
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#include "object.h" | 
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#include "color.h" | 
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#include "lookup.h" | 
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 | 
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#define PI      3.14159265358979323846 | 
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#define C_1SIDEDTHICK   0.005 | 
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int     o_face(), o_cone(), o_sphere(), o_ring(), o_cylinder(); | 
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int     o_instance(), o_illum(); | 
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int     o_plastic(), o_metal(), o_glass(), o_dielectric(), | 
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        o_mirror(), o_trans(), o_light(); | 
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 | 
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extern void     free(); | 
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extern char     *malloc(); | 
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LUTAB   rmats = LU_SINIT(free,NULL);            /* defined material table */ | 
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LUTAB   rdispatch = LU_SINIT(NULL,NULL);        /* function dispatch table */ | 
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LUTAB   vertab = LU_SINIT(free,NULL);   /* our vertex lookup table */ | 
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void rad2mgf(char *inp); | 
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void cvtprim(char *inp, char *mod, char *typ, char *id, FUNARGS *fa); | 
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void newmat(char *id, char *alias); | 
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void setmat(char *id); | 
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void setobj(char *id); | 
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void init(void); | 
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void uninit(void); | 
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void clrverts(void); | 
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void unspace(char *s); | 
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void add2dispatch(char *name, int (*func)()); | 
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char *getvertid(char *vname, FVECT vp); | 
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int o_unsupported(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_face(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_cone(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_sphere(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_cylinder(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_ring(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_instance(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_illum(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_plastic(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_metal(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_glass(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_dielectric(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_mirror(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_trans(char *mod, char *typ, char *id, FUNARGS *fa); | 
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int o_light(char *mod, char *typ, char *id, FUNARGS *fa); | 
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main(argc, argv) | 
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int     argc; | 
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char    **argv; | 
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 | 
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int | 
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main( | 
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        int     argc, | 
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        char    **argv | 
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) | 
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{ | 
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        int     i; | 
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} | 
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rad2mgf(inp)            /* convert a Radiance file to MGF */ | 
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char    *inp; | 
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void | 
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rad2mgf(                /* convert a Radiance file to MGF */ | 
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        char    *inp | 
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) | 
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{ | 
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#define mod     buf | 
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#define typ     (buf+128) | 
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#define id      (buf+256) | 
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#define alias   (buf+384) | 
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        char    buf[512]; | 
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        char  mod[128], typ[32], id[128], alias[128]; | 
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        FUNARGS fa; | 
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        register FILE   *fp; | 
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        register int    c; | 
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                        break; | 
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                default:                /* Radiance primitive */ | 
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                        ungetc(c, fp); | 
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                        if (fscanf(fp, "%s %s %s", mod, typ, id) != 3) { | 
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                        if (fgetword(mod, sizeof(mod), fp) == NULL || | 
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                                        fgetword(typ, sizeof(typ), fp) == NULL || | 
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                                        fgetword(id, sizeof(id), fp) == NULL) { | 
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                                fputs(inp, stderr); | 
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                                fputs(": unexpected EOF\n", stderr); | 
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                                exit(1); | 
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                        } | 
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                        unspace(mod); | 
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                        unspace(id); | 
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                        if (!strcmp(typ, "alias")) { | 
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                                strcpy(alias, "EOF"); | 
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                                fscanf(fp, "%s", alias); | 
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                                fgetword(alias, sizeof(alias), fp); | 
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                                unspace(alias); | 
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                                newmat(id, alias); | 
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                        } else { | 
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                                if (!readfargs(&fa, fp)) { | 
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                pclose(fp); | 
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        else | 
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                fclose(fp); | 
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#undef mod | 
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#undef typ | 
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#undef id | 
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#undef alias | 
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} | 
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cvtprim(inp, mod, typ, id, fa)  /* process Radiance primitive */ | 
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char    *inp, *mod, *typ, *id; | 
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FUNARGS *fa; | 
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void | 
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unspace(        /* replace spaces with underscores in s */ | 
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        char *s | 
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) | 
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{ | 
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        while (*s) { | 
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                if (isspace(*s)) | 
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                        *s = '_'; | 
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                ++s; | 
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        } | 
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} | 
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void | 
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cvtprim(        /* process Radiance primitive */ | 
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        char    *inp, | 
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        char    *mod, | 
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        char    *typ, | 
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        char    *id, | 
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        FUNARGS *fa | 
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) | 
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{ | 
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        int     (*df)(); | 
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        df = (int (*)())lu_find(&rdispatch, typ)->data; | 
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        if (df != NULL) {                               /* convert */ | 
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                if ((*df)(mod, typ, id, fa) < 0) { | 
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                        fprintf(stderr, "%s: bad %s \"%s\"\n", typ, id); | 
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                        fprintf(stderr, "%s: bad %s \"%s\"\n", "rad2mgf", typ, id); | 
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                        exit(1); | 
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                } | 
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        } else {                                        /* unsupported */ | 
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} | 
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newmat(id, alias)               /* add a modifier to the alias list */ | 
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char    *id; | 
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char    *alias; | 
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void | 
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newmat(         /* add a modifier to the alias list */ | 
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        char    *id, | 
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        char    *alias | 
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) | 
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{ | 
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        register LUENT  *lp, *lpa; | 
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} | 
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setmat(id)                      /* set material to this one */ | 
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char    *id; | 
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void | 
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setmat(                 /* set material to this one */ | 
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        char    *id | 
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) | 
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{ | 
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        if (!strcmp(id, curmat))        /* already set? */ | 
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                return; | 
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} | 
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setobj(id)                      /* set object name to this one */ | 
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char    *id; | 
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void | 
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setobj(                 /* set object name to this one */ | 
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        char    *id | 
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) | 
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{ | 
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        register char   *cp, *cp2; | 
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        char    *end = NULL; | 
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        if (end == NULL) | 
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                end = cp; | 
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                                /* copy to current object */ | 
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        for (cp = id, cp2 = curobj; cp < end; *cp2++ = *cp++) | 
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        cp2 = curobj; | 
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        if (!isalpha(*id)) {    /* start with letter */ | 
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                diff = *cp2 != 'O'; | 
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                *cp2++ = 'O'; | 
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> | 
        } | 
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        for (cp = id; cp < end; *cp2++ = *cp++) { | 
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                if ((*cp < '!') | (*cp > '~'))  /* limit to visible chars */ | 
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                        *cp = '?'; | 
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                diff += *cp != *cp2; | 
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+ | 
        } | 
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        if (!diff && !*cp2) | 
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                return; | 
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        *cp2 = '\0'; | 
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} | 
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init()                  /* initialize dispatch table and output */ | 
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void | 
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init(void)                      /* initialize dispatch table and output */ | 
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{ | 
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        lu_init(&vertab, NVERTS); | 
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        lu_init(&rdispatch, 22); | 
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        add2dispatch("tube", o_cylinder); | 
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        add2dispatch("ring", o_ring); | 
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        add2dispatch("instance", o_instance); | 
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        add2dispatch("mesh", o_instance); | 
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        add2dispatch("plastic", o_plastic); | 
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        add2dispatch("plastic2", o_plastic); | 
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        add2dispatch("metal", o_metal); | 
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} | 
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< | 
uninit()                        /* mark end of MGF file */ | 
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void | 
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uninit(void)                    /* mark end of MGF file */ | 
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{ | 
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        puts("o"); | 
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        if (hasmult) | 
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} | 
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 | 
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< | 
clrverts()                      /* clear vertex table */ | 
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void | 
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clrverts(void)                  /* clear vertex table */ | 
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{ | 
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        register int    i; | 
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 | 
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} | 
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< | 
add2dispatch(name, func)        /* add function to dispatch table */ | 
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char    *name; | 
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int     (*func)(); | 
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void | 
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> | 
add2dispatch(   /* add function to dispatch table */ | 
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        char    *name, | 
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> | 
        int     (*func)() | 
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) | 
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{ | 
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        register LUENT  *lp; | 
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char * | 
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< | 
getvertid(vname, vp)            /* get/set vertex ID for this point */ | 
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< | 
char    *vname; | 
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< | 
FVECT   vp; | 
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> | 
getvertid(              /* get/set vertex ID for this point */ | 
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> | 
        char    *vname, | 
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> | 
        FVECT   vp | 
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> | 
) | 
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{ | 
| 413 | 
  | 
        static char     vkey[VKLEN]; | 
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        register LUENT  *lp; | 
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 | 
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int | 
| 453 | 
< | 
o_unsupported(mod, typ, id, fa)         /* mark unsupported primitive */ | 
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< | 
char    *mod, *typ, *id; | 
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< | 
FUNARGS *fa; | 
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> | 
o_unsupported(          /* mark unsupported primitive */ | 
| 454 | 
> | 
        char    *mod, | 
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> | 
        char    *typ, | 
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> | 
        char    *id, | 
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> | 
        FUNARGS *fa | 
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> | 
) | 
| 459 | 
  | 
{ | 
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  | 
        register int    i; | 
| 461 | 
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 | 
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 | 
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 | 
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int | 
| 483 | 
< | 
o_face(mod, typ, id, fa)                /* print out a polygon */ | 
| 484 | 
< | 
char    *mod, *typ, *id; | 
| 485 | 
< | 
FUNARGS *fa; | 
| 483 | 
> | 
o_face(         /* print out a polygon */ | 
| 484 | 
> | 
        char    *mod, | 
| 485 | 
> | 
        char    *typ, | 
| 486 | 
> | 
        char    *id, | 
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> | 
        FUNARGS *fa | 
| 488 | 
> | 
) | 
| 489 | 
  | 
{ | 
| 490 | 
< | 
        char    entbuf[512]; | 
| 490 | 
> | 
        char    entbuf[2048], *linestart; | 
| 491 | 
  | 
        register char   *cp; | 
| 492 | 
  | 
        register int    i; | 
| 493 | 
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 | 
| 494 | 
< | 
        if (fa->nfargs < 9 | fa->nfargs % 3) | 
| 494 | 
> | 
        if ((fa->nfargs < 9) | (fa->nfargs % 3)) | 
| 495 | 
  | 
                return(-1); | 
| 496 | 
  | 
        setmat(mod); | 
| 497 | 
  | 
        setobj(id); | 
| 498 | 
< | 
        cp = entbuf; | 
| 498 | 
> | 
        cp = linestart = entbuf; | 
| 499 | 
  | 
        *cp++ = 'f'; | 
| 500 | 
  | 
        for (i = 0; i < fa->nfargs; i += 3) { | 
| 501 | 
  | 
                *cp++ = ' '; | 
| 502 | 
+ | 
                if (cp - linestart > 72) { | 
| 503 | 
+ | 
                        *cp++ = '\\'; *cp++ = '\n'; | 
| 504 | 
+ | 
                        linestart = cp; | 
| 505 | 
+ | 
                        *cp++ = ' '; *cp++ = ' '; | 
| 506 | 
+ | 
                } | 
| 507 | 
  | 
                getvertid(cp, fa->farg + i); | 
| 508 | 
  | 
                while (*cp) | 
| 509 | 
  | 
                        cp++; | 
| 514 | 
  | 
 | 
| 515 | 
  | 
 | 
| 516 | 
  | 
int | 
| 517 | 
< | 
o_cone(mod, typ, id, fa)        /* print out a cone */ | 
| 518 | 
< | 
char    *mod, *typ, *id; | 
| 519 | 
< | 
register FUNARGS        *fa; | 
| 517 | 
> | 
o_cone( /* print out a cone */ | 
| 518 | 
> | 
        char    *mod, | 
| 519 | 
> | 
        char    *typ, | 
| 520 | 
> | 
        char    *id, | 
| 521 | 
> | 
        register FUNARGS        *fa | 
| 522 | 
> | 
) | 
| 523 | 
  | 
{ | 
| 524 | 
  | 
        char    v1[6], v2[6]; | 
| 525 | 
  | 
 | 
| 540 | 
  | 
 | 
| 541 | 
  | 
 | 
| 542 | 
  | 
int | 
| 543 | 
< | 
o_sphere(mod, typ, id, fa)      /* print out a sphere */ | 
| 544 | 
< | 
char    *mod, *typ, *id; | 
| 545 | 
< | 
register FUNARGS        *fa; | 
| 543 | 
> | 
o_sphere(       /* print out a sphere */ | 
| 544 | 
> | 
        char    *mod, | 
| 545 | 
> | 
        char    *typ, | 
| 546 | 
> | 
        char    *id, | 
| 547 | 
> | 
        register FUNARGS        *fa | 
| 548 | 
> | 
) | 
| 549 | 
  | 
{ | 
| 550 | 
  | 
        char    cent[6]; | 
| 551 | 
  | 
 | 
| 560 | 
  | 
 | 
| 561 | 
  | 
 | 
| 562 | 
  | 
int | 
| 563 | 
< | 
o_cylinder(mod, typ, id, fa)    /* print out a cylinder */ | 
| 564 | 
< | 
char    *mod, *typ, *id; | 
| 565 | 
< | 
register FUNARGS        *fa; | 
| 563 | 
> | 
o_cylinder(     /* print out a cylinder */ | 
| 564 | 
> | 
        char    *mod, | 
| 565 | 
> | 
        char    *typ, | 
| 566 | 
> | 
        char    *id, | 
| 567 | 
> | 
        register FUNARGS        *fa | 
| 568 | 
> | 
) | 
| 569 | 
  | 
{ | 
| 570 | 
  | 
        char    v1[6], v2[6]; | 
| 571 | 
  | 
 | 
| 582 | 
  | 
 | 
| 583 | 
  | 
 | 
| 584 | 
  | 
int | 
| 585 | 
< | 
o_ring(mod, typ, id, fa)        /* print out a ring */ | 
| 586 | 
< | 
char    *mod, *typ, *id; | 
| 587 | 
< | 
register FUNARGS        *fa; | 
| 585 | 
> | 
o_ring( /* print out a ring */ | 
| 586 | 
> | 
        char    *mod, | 
| 587 | 
> | 
        char    *typ, | 
| 588 | 
> | 
        char    *id, | 
| 589 | 
> | 
        register FUNARGS        *fa | 
| 590 | 
> | 
) | 
| 591 | 
  | 
{ | 
| 592 | 
  | 
        if (fa->nfargs != 8) | 
| 593 | 
  | 
                return(-1); | 
| 608 | 
  | 
 | 
| 609 | 
  | 
 | 
| 610 | 
  | 
int | 
| 611 | 
< | 
o_instance(mod, typ, id, fa)    /* convert an instance */ | 
| 612 | 
< | 
char    *mod, *typ, *id; | 
| 613 | 
< | 
FUNARGS *fa; | 
| 611 | 
> | 
o_instance(     /* convert an instance (or mesh) */ | 
| 612 | 
> | 
        char    *mod, | 
| 613 | 
> | 
        char    *typ, | 
| 614 | 
> | 
        char    *id, | 
| 615 | 
> | 
        FUNARGS *fa | 
| 616 | 
> | 
) | 
| 617 | 
  | 
{ | 
| 618 | 
  | 
        register int    i; | 
| 619 | 
  | 
        register char   *cp; | 
| 652 | 
  | 
 | 
| 653 | 
  | 
 | 
| 654 | 
  | 
int | 
| 655 | 
< | 
o_illum(mod, typ, id, fa)       /* convert an illum material */ | 
| 656 | 
< | 
char    *mod, *typ, *id; | 
| 657 | 
< | 
FUNARGS *fa; | 
| 655 | 
> | 
o_illum(        /* convert an illum material */ | 
| 656 | 
> | 
        char    *mod, | 
| 657 | 
> | 
        char    *typ, | 
| 658 | 
> | 
        char    *id, | 
| 659 | 
> | 
        FUNARGS *fa | 
| 660 | 
> | 
) | 
| 661 | 
  | 
{ | 
| 662 | 
  | 
        if (fa->nsargs == 1 && strcmp(fa->sarg[0], VOIDID)) { | 
| 663 | 
  | 
                newmat(id, fa->sarg[0]);        /* just create alias */ | 
| 671 | 
  | 
 | 
| 672 | 
  | 
 | 
| 673 | 
  | 
int | 
| 674 | 
< | 
o_plastic(mod, typ, id, fa)     /* convert a plastic material */ | 
| 675 | 
< | 
char    *mod, *typ, *id; | 
| 676 | 
< | 
register FUNARGS        *fa; | 
| 674 | 
> | 
o_plastic(      /* convert a plastic material */ | 
| 675 | 
> | 
        char    *mod, | 
| 676 | 
> | 
        char    *typ, | 
| 677 | 
> | 
        char    *id, | 
| 678 | 
> | 
        register FUNARGS        *fa | 
| 679 | 
> | 
) | 
| 680 | 
  | 
{ | 
| 681 | 
  | 
        COLOR   cxyz, rrgb; | 
| 682 | 
  | 
        double  d; | 
| 702 | 
  | 
 | 
| 703 | 
  | 
 | 
| 704 | 
  | 
int | 
| 705 | 
< | 
o_metal(mod, typ, id, fa)       /* convert a metal material */ | 
| 706 | 
< | 
char    *mod, *typ, *id; | 
| 707 | 
< | 
register FUNARGS        *fa; | 
| 705 | 
> | 
o_metal(        /* convert a metal material */ | 
| 706 | 
> | 
        char    *mod, | 
| 707 | 
> | 
        char    *typ, | 
| 708 | 
> | 
        char    *id, | 
| 709 | 
> | 
        register FUNARGS        *fa | 
| 710 | 
> | 
) | 
| 711 | 
  | 
{ | 
| 712 | 
  | 
        COLOR   cxyz, rrgb; | 
| 713 | 
  | 
        double  d; | 
| 731 | 
  | 
 | 
| 732 | 
  | 
 | 
| 733 | 
  | 
int | 
| 734 | 
< | 
o_glass(mod, typ, id, fa)       /* convert a glass material */ | 
| 735 | 
< | 
char    *mod, *typ, *id; | 
| 736 | 
< | 
register FUNARGS        *fa; | 
| 734 | 
> | 
o_glass(        /* convert a glass material */ | 
| 735 | 
> | 
        char    *mod, | 
| 736 | 
> | 
        char    *typ, | 
| 737 | 
> | 
        char    *id, | 
| 738 | 
> | 
        register FUNARGS        *fa | 
| 739 | 
> | 
) | 
| 740 | 
  | 
{ | 
| 741 | 
  | 
        COLOR   cxyz, rrgb, trgb; | 
| 742 | 
  | 
        double  nrfr = 1.52, F, d; | 
| 773 | 
  | 
 | 
| 774 | 
  | 
 | 
| 775 | 
  | 
int | 
| 776 | 
< | 
o_dielectric(mod, typ, id, fa)  /* convert a dielectric material */ | 
| 777 | 
< | 
char    *mod, *typ, *id; | 
| 778 | 
< | 
register FUNARGS        *fa; | 
| 776 | 
> | 
o_dielectric(   /* convert a dielectric material */ | 
| 777 | 
> | 
        char    *mod, | 
| 778 | 
> | 
        char    *typ, | 
| 779 | 
> | 
        char    *id, | 
| 780 | 
> | 
        register FUNARGS        *fa | 
| 781 | 
> | 
) | 
| 782 | 
  | 
{ | 
| 783 | 
  | 
        COLOR   cxyz, trgb; | 
| 784 | 
  | 
        double  F, d; | 
| 806 | 
  | 
 | 
| 807 | 
  | 
 | 
| 808 | 
  | 
int | 
| 809 | 
< | 
o_mirror(mod, typ, id, fa)      /* convert a mirror material */ | 
| 810 | 
< | 
char    *mod, *typ, *id; | 
| 811 | 
< | 
register FUNARGS        *fa; | 
| 809 | 
> | 
o_mirror(       /* convert a mirror material */ | 
| 810 | 
> | 
        char    *mod, | 
| 811 | 
> | 
        char    *typ, | 
| 812 | 
> | 
        char    *id, | 
| 813 | 
> | 
        register FUNARGS        *fa | 
| 814 | 
> | 
) | 
| 815 | 
  | 
{ | 
| 816 | 
  | 
        COLOR   cxyz, rrgb; | 
| 817 | 
  | 
        double  d; | 
| 835 | 
  | 
 | 
| 836 | 
  | 
 | 
| 837 | 
  | 
int | 
| 838 | 
< | 
o_trans(mod, typ, id, fa)       /* convert a trans material */ | 
| 839 | 
< | 
char    *mod, *typ, *id; | 
| 840 | 
< | 
register FUNARGS        *fa; | 
| 838 | 
> | 
o_trans(        /* convert a trans material */ | 
| 839 | 
> | 
        char    *mod, | 
| 840 | 
> | 
        char    *typ, | 
| 841 | 
> | 
        char    *id, | 
| 842 | 
> | 
        register FUNARGS        *fa | 
| 843 | 
> | 
) | 
| 844 | 
  | 
{ | 
| 845 | 
  | 
        COLOR   cxyz, rrgb; | 
| 846 | 
  | 
        double  rough, trans, tspec, d; | 
| 877 | 
  | 
 | 
| 878 | 
  | 
 | 
| 879 | 
  | 
int | 
| 880 | 
< | 
o_light(mod, typ, id, fa)               /* convert a light type */ | 
| 881 | 
< | 
char    *mod, *typ, *id; | 
| 882 | 
< | 
register FUNARGS        *fa; | 
| 880 | 
> | 
o_light(                /* convert a light type */ | 
| 881 | 
> | 
        char    *mod, | 
| 882 | 
> | 
        char    *typ, | 
| 883 | 
> | 
        char    *id, | 
| 884 | 
> | 
        register FUNARGS        *fa | 
| 885 | 
> | 
) | 
| 886 | 
  | 
{ | 
| 887 | 
  | 
        COLOR   cxyz, rrgb; | 
| 888 | 
  | 
        double  d; |