1 |
greg |
2.1 |
/* 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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#endif |
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7 |
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/* |
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* Convert MGF (Materials and Geometry Format) to Radiance |
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*/ |
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#include <stdio.h> |
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#include <math.h> |
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#include <string.h> |
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#include "mgflib/parser.h" |
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#include "color.h" |
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#include "tmesh.h" |
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18 |
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#define putv(v) printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2]) |
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20 |
greg |
2.2 |
double glowdist = FHUGE; /* glow test distance */ |
21 |
greg |
2.1 |
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22 |
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double emult = 1.; /* emmitter multiplier */ |
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24 |
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int r_comment(), r_cone(), r_cyl(), r_face(), r_ies(), r_ring(), r_sph(); |
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char *material(), *object(), *addarg(); |
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main(argc, argv) /* convert files to stdout */ |
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int argc; |
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char *argv[]; |
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{ |
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int i, rv; |
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/* initialize dispatch table */ |
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mg_ehand[MG_E_COMMENT] = r_comment; |
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mg_ehand[MG_E_COLOR] = c_hcolor; |
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mg_ehand[MG_E_CONE] = r_cone; |
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mg_ehand[MG_E_CXY] = c_hcolor; |
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mg_ehand[MG_E_CYL] = r_cyl; |
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mg_ehand[MG_E_ED] = c_hmaterial; |
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mg_ehand[MG_E_FACE] = r_face; |
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mg_ehand[MG_E_IES] = r_ies; |
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mg_ehand[MG_E_MATERIAL] = c_hmaterial; |
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mg_ehand[MG_E_NORMAL] = c_hvertex; |
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mg_ehand[MG_E_OBJECT] = obj_handler; |
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mg_ehand[MG_E_POINT] = c_hvertex; |
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mg_ehand[MG_E_RD] = c_hmaterial; |
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mg_ehand[MG_E_RING] = r_ring; |
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mg_ehand[MG_E_RS] = c_hmaterial; |
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mg_ehand[MG_E_SPH] = r_sph; |
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mg_ehand[MG_E_TD] = c_hmaterial; |
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mg_ehand[MG_E_TS] = c_hmaterial; |
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mg_ehand[MG_E_VERTEX] = c_hvertex; |
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mg_ehand[MG_E_XF] = xf_handler; |
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mg_init(); /* initialize the parser */ |
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/* get options & print header */ |
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printf("## %s", argv[0]); |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
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printf(" %s", argv[i]); |
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switch (argv[i][1]) { |
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case 'g': /* glow distance (meters) */ |
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if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
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goto userr; |
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glowdist = atof(argv[++i]); |
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printf(" %s", argv[i]); |
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break; |
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case 'e': /* emitter multiplier */ |
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if (argv[i][2] || badarg(argc-i, argv+i, "f")) |
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goto userr; |
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emult = atof(argv[++i]); |
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printf(" %s", argv[i]); |
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break; |
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default: |
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goto userr; |
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} |
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} |
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putchar('\n'); |
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if (i == argc) { /* convert stdin */ |
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if ((rv = mg_load(NULL)) != MG_OK) |
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exit(1); |
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} else /* convert each file */ |
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for ( ; i < argc; i++) { |
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printf("## %s %s ##############################\n", |
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argv[0], argv[i]); |
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if ((rv = mg_load(argv[i])) != MG_OK) |
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exit(1); |
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} |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-g dist][-m mult] [file.mgf] ..\n", |
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argv[0]); |
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exit(1); |
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} |
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int |
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r_comment(ac, av) /* repeat a comment verbatim */ |
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register int ac; |
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register char **av; |
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{ |
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fputs("\n#", stdout); /* use Radiance comment character */ |
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while (--ac) { |
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putchar(' '); |
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fputs(*++av, stdout); |
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} |
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putchar('\n'); |
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return(MG_OK); |
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} |
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int |
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r_cone(ac, av) /* put out a cone */ |
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int ac; |
113 |
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char **av; |
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{ |
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static int ncones; |
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char *mat; |
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double r1, r2; |
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C_VERTEX *cv1, *cv2; |
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FVECT p1, p2; |
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int inv; |
121 |
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122 |
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if (ac != 5) |
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return(MG_EARGC); |
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if (!isflt(av[2]) || !isflt(av[4])) |
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return(MG_ETYPE); |
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if ((cv1 = c_getvert(av[1])) == NULL || |
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(cv2 = c_getvert(av[3])) == NULL) |
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return(MG_EUNDEF); |
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xf_xfmpoint(p1, cv1->p); |
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xf_xfmpoint(p2, cv2->p); |
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r1 = xf_scale(atof(av[2])); |
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r2 = xf_scale(atof(av[4])); |
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inv = r1 < 0.; |
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if (r1 == 0.) { |
135 |
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if (r2 == 0.) |
136 |
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return(MG_EILL); |
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inv = r2 < 0.; |
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} else if (r2 != 0. && inv ^ r2 < 0.) |
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return(MG_EILL); |
140 |
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if (inv) { |
141 |
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r1 = -r1; |
142 |
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r2 = -r2; |
143 |
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} |
144 |
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if ((mat = material()) == NULL) |
145 |
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return(MG_EBADMAT); |
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printf("\n%s %s %sc%d\n", mat, inv ? "cup" : "cone", |
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object(), ++ncones); |
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printf("0\n0\n8\n"); |
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putv(p1); |
150 |
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putv(p2); |
151 |
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printf("%18.12g %18.12g\n", r1, r2); |
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return(MG_OK); |
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} |
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155 |
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156 |
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int |
157 |
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r_cyl(ac, av) /* put out a cylinder */ |
158 |
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int ac; |
159 |
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char **av; |
160 |
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{ |
161 |
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static int ncyls; |
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char *mat; |
163 |
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double rad; |
164 |
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C_VERTEX *cv1, *cv2; |
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FVECT p1, p2; |
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int inv; |
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if (ac != 4) |
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return(MG_EARGC); |
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if (!isflt(av[2])) |
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return(MG_ETYPE); |
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if ((cv1 = c_getvert(av[1])) == NULL || |
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(cv2 = c_getvert(av[3])) == NULL) |
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return(MG_EUNDEF); |
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xf_xfmpoint(p1, cv1->p); |
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xf_xfmpoint(p2, cv2->p); |
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rad = xf_scale(atof(av[2])); |
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if ((inv = rad < 0.)) |
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rad = -rad; |
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if ((mat = material()) == NULL) |
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return(MG_EBADMAT); |
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printf("\n%s %s %scy%d\n", mat, inv ? "tube" : "cylinder", |
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object(), ++ncyls); |
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printf("0\n0\n7\n"); |
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putv(p1); |
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putv(p2); |
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printf("%18.12g\n", rad); |
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return(MG_OK); |
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} |
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int |
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r_sph(ac, av) /* put out a sphere */ |
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int ac; |
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char **av; |
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{ |
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static int nsphs; |
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char *mat; |
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double rad; |
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C_VERTEX *cv; |
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FVECT cent; |
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int inv; |
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if (ac != 3) |
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return(MG_EARGC); |
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if (!isflt(av[2])) |
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return(MG_ETYPE); |
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if ((cv = c_getvert(av[1])) == NULL) |
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return(MG_EUNDEF); |
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xf_xfmpoint(cent, cv->p); |
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rad = xf_scale(atof(av[2])); |
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if ((inv = rad < 0.)) |
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rad = -rad; |
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if ((mat = material()) == NULL) |
215 |
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return(MG_EBADMAT); |
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printf("\n%s %s %ss%d\n", mat, inv ? "bubble" : "sphere", |
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object(), ++nsphs); |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
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cent[0], cent[1], cent[2], rad); |
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return(MG_OK); |
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} |
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223 |
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224 |
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int |
225 |
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r_ring(ac, av) /* put out a ring */ |
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int ac; |
227 |
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char **av; |
228 |
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{ |
229 |
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static int nrings; |
230 |
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char *mat; |
231 |
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double r1, r2; |
232 |
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C_VERTEX *cv; |
233 |
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FVECT cent, norm; |
234 |
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235 |
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if (ac != 4) |
236 |
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return(MG_EARGC); |
237 |
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if (!isflt(av[2]) || !isflt(av[3])) |
238 |
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return(MG_ETYPE); |
239 |
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if ((cv = c_getvert(av[1])) == NULL) |
240 |
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return(MG_EUNDEF); |
241 |
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if (is0vect(cv->n)) |
242 |
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return(MG_EILL); |
243 |
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xf_xfmpoint(cent, cv->p); |
244 |
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xf_rotvect(norm, cv->n); |
245 |
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r1 = xf_scale(atof(av[2])); |
246 |
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r2 = xf_scale(atof(av[3])); |
247 |
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if (r1 < 0. | r2 <= r1) |
248 |
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return(MG_EILL); |
249 |
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if ((mat = material()) == NULL) |
250 |
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return(MG_EBADMAT); |
251 |
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printf("\n%s ring %sr%d\n", mat, object(), ++nrings); |
252 |
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printf("0\n0\n8\n"); |
253 |
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putv(cent); |
254 |
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putv(norm); |
255 |
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printf("%18.12g %18.12g\n", r1, r2); |
256 |
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return(MG_OK); |
257 |
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} |
258 |
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259 |
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260 |
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int |
261 |
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r_face(ac, av) /* convert a face */ |
262 |
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int ac; |
263 |
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char **av; |
264 |
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{ |
265 |
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static int nfaces; |
266 |
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char *mat; |
267 |
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register int i; |
268 |
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register C_VERTEX *cv; |
269 |
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FVECT v; |
270 |
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int rv; |
271 |
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272 |
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if (ac < 4) |
273 |
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return(MG_EARGC); |
274 |
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if ((mat = material()) == NULL) |
275 |
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return(MG_EBADMAT); |
276 |
greg |
2.2 |
if (ac <= 5) { /* check for surface normals */ |
277 |
greg |
2.1 |
for (i = 1; i < ac; i++) { |
278 |
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if ((cv = c_getvert(av[i])) == NULL) |
279 |
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return(MG_EUNDEF); |
280 |
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if (is0vect(cv->n)) |
281 |
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break; |
282 |
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} |
283 |
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if (i == ac) { /* break into triangles */ |
284 |
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do_tri(mat, av[1], av[2], av[3]); |
285 |
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if (ac == 5) |
286 |
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do_tri(mat, av[3], av[4], av[1]); |
287 |
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return(MG_OK); |
288 |
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} |
289 |
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} |
290 |
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printf("\n%s polygon %sf%d\n", mat, object(), ++nfaces); |
291 |
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printf("0\n0\n%d\n", 3*(ac-1)); |
292 |
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for (i = 1; i < ac; i++) { |
293 |
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if ((cv = c_getvert(av[i])) == NULL) |
294 |
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return(MG_EUNDEF); |
295 |
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xf_xfmpoint(v, cv->p); |
296 |
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putv(v); |
297 |
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} |
298 |
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return(MG_OK); |
299 |
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} |
300 |
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301 |
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302 |
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r_ies(ac, av) /* convert an IES luminaire file */ |
303 |
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int ac; |
304 |
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char **av; |
305 |
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{ |
306 |
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int xa0 = 2; |
307 |
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char combuf[72]; |
308 |
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char fname[48]; |
309 |
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char *oname; |
310 |
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register char *op; |
311 |
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register int i; |
312 |
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313 |
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if (ac < 2) |
314 |
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return(MG_EARGC); |
315 |
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(void)strcpy(combuf, "ies2rad"); |
316 |
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op = combuf + 7; |
317 |
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if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
318 |
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if (!isflt(av[xa0+1])) |
319 |
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return(MG_ETYPE); |
320 |
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op = addarg(addarg(op, "-m"), av[xa0+1]); |
321 |
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xa0 += 2; |
322 |
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} |
323 |
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if (access(av[1], 0) == -1) |
324 |
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return(MG_ENOFILE); |
325 |
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*op++ = ' '; /* IES filename goes last */ |
326 |
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(void)strcpy(op, av[1]); |
327 |
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system(combuf); /* run ies2rad */ |
328 |
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/* now let's find the output file */ |
329 |
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if ((op = strrchr(av[1], '/')) == NULL) |
330 |
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op = av[1]; |
331 |
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(void)strcpy(fname, op); |
332 |
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if ((op = strrchr(fname, '.')) == NULL) |
333 |
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op = fname + strlen(fname); |
334 |
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(void)strcpy(op, ".rad"); |
335 |
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if (access(fname, 0) == -1) |
336 |
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return(MG_EINCL); |
337 |
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/* put out xform command */ |
338 |
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printf("\n!xform"); |
339 |
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oname = object(); |
340 |
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if (*oname) |
341 |
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printf(" -n %s", oname); |
342 |
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for (i = xa0; i < ac; i++) |
343 |
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printf(" %s", av[i]); |
344 |
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if (ac > xa0 && xf_argc > 0) |
345 |
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printf(" -i 1"); |
346 |
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for (i = 0; i < xf_argc; i++) |
347 |
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printf(" %s", xf_argv[i]); |
348 |
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printf(" %s\n", fname); |
349 |
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return(MG_OK); |
350 |
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} |
351 |
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352 |
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353 |
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do_tri(mat, vn1, vn2, vn3) /* put out smoothed triangle */ |
354 |
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char *mat, *vn1, *vn2, *vn3; |
355 |
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{ |
356 |
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static int ntris; |
357 |
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BARYCCM bvecs; |
358 |
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FLOAT bcoor[3][3]; |
359 |
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C_VERTEX *cv1, *cv2, *cv3; |
360 |
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FVECT v1, v2, v3; |
361 |
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FVECT n1, n2, n3; |
362 |
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register int i; |
363 |
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/* the following is repeat code, so assume it's OK */ |
364 |
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cv1 = c_getvert(vn1); |
365 |
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cv2 = c_getvert(vn2); |
366 |
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cv3 = c_getvert(vn3); |
367 |
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xf_xfmpoint(v1, cv1->p); |
368 |
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xf_xfmpoint(v2, cv2->p); |
369 |
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xf_xfmpoint(v3, cv3->p); |
370 |
greg |
2.2 |
if (comp_baryc(&bvecs, v1, v2, v3) < 0) |
371 |
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return; /* degenerate triangle! */ |
372 |
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printf("\n%s texfunc T-nor\n", mat); |
373 |
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printf("4 dx dy dz %s\n0\n", TCALNAME); |
374 |
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xf_rotvect(n1, cv1->n); |
375 |
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xf_rotvect(n2, cv2->n); |
376 |
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xf_rotvect(n3, cv3->n); |
377 |
|
|
for (i = 0; i < 3; i++) { |
378 |
|
|
bcoor[i][0] = n1[i]; |
379 |
|
|
bcoor[i][1] = n2[i]; |
380 |
|
|
bcoor[i][2] = n3[i]; |
381 |
greg |
2.1 |
} |
382 |
greg |
2.2 |
put_baryc(&bvecs, bcoor, 3); |
383 |
|
|
printf("\nT-nor polygon %st%d\n", object(), ++ntris); |
384 |
greg |
2.1 |
printf("0\n0\n9\n"); |
385 |
|
|
putv(v1); |
386 |
|
|
putv(v2); |
387 |
|
|
putv(v3); |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
|
391 |
|
|
char * |
392 |
|
|
material() /* get (and print) current material */ |
393 |
|
|
{ |
394 |
|
|
char *mname = "mat"; |
395 |
|
|
COLOR radrgb, c2; |
396 |
|
|
double d; |
397 |
|
|
register int i; |
398 |
|
|
|
399 |
|
|
if (c_cmaterial->name != NULL) |
400 |
|
|
mname = c_cmaterial->name; |
401 |
|
|
if (!c_cmaterial->clock) |
402 |
|
|
return(mname); /* already current */ |
403 |
|
|
/* else update output */ |
404 |
|
|
c_cmaterial->clock = 0; |
405 |
|
|
if (c_cmaterial->ed > .1) { /* emitter */ |
406 |
|
|
cvtcolor(radrgb, &c_cmaterial->ed_c, |
407 |
|
|
emult*c_cmaterial->ed/WHTEFFICACY); |
408 |
greg |
2.2 |
if (glowdist < FHUGE) { /* do a glow */ |
409 |
greg |
2.1 |
printf("\nvoid glow %s\n0\n0\n", mname); |
410 |
|
|
printf("4 %f %f %f %f\n", colval(radrgb,RED), |
411 |
|
|
colval(radrgb,GRN), |
412 |
|
|
colval(radrgb,BLU), glowdist); |
413 |
|
|
} else { |
414 |
|
|
printf("\nvoid light %s\n0\n0\n", mname); |
415 |
|
|
printf("3 %f %f %f\n", colval(radrgb,RED), |
416 |
|
|
colval(radrgb,GRN), |
417 |
|
|
colval(radrgb,BLU)); |
418 |
|
|
} |
419 |
|
|
return(mname); |
420 |
|
|
} |
421 |
|
|
d = c_cmaterial->rd + c_cmaterial->td + |
422 |
|
|
c_cmaterial->rs + c_cmaterial->ts; |
423 |
|
|
if (d <= 0. | d >= 1.) |
424 |
|
|
return(NULL); |
425 |
|
|
if (c_cmaterial->td > .01 || c_cmaterial->ts > .01) { /* trans */ |
426 |
|
|
double ts, a5, a6; |
427 |
|
|
|
428 |
|
|
ts = sqrt(c_cmaterial->ts); /* because we use 2 sides */ |
429 |
|
|
/* average colors */ |
430 |
|
|
d = c_cmaterial->rd + c_cmaterial->td + ts; |
431 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
432 |
|
|
cvtcolor(c2, &c_cmaterial->td_c, c_cmaterial->td/d); |
433 |
|
|
addcolor(radrgb, c2); |
434 |
|
|
cvtcolor(c2, &c_cmaterial->ts_c, ts/d); |
435 |
|
|
addcolor(radrgb, c2); |
436 |
|
|
if (c_cmaterial->rs + ts > .0001) |
437 |
|
|
a5 = (c_cmaterial->rs*c_cmaterial->rs_a + |
438 |
|
|
ts*.5*c_cmaterial->ts_a) / |
439 |
|
|
(c_cmaterial->rs + ts); |
440 |
|
|
a6 = (c_cmaterial->td + ts) / |
441 |
|
|
(c_cmaterial->rd + c_cmaterial->td + ts); |
442 |
|
|
if (a6 < .999) { |
443 |
|
|
d = c_cmaterial->rd/(1. - c_cmaterial->rs)/(1. - a6); |
444 |
|
|
scalecolor(radrgb, d); |
445 |
|
|
} |
446 |
|
|
printf("\nvoid trans %s\n0\n0\n", mname); |
447 |
|
|
printf("7 %f %f %f\n", colval(radrgb,RED), |
448 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU)); |
449 |
|
|
printf("\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
450 |
|
|
ts/(ts + c_cmaterial->td)); |
451 |
|
|
return(mname); |
452 |
|
|
} |
453 |
|
|
if (c_cmaterial->rs < .01 || isgrey(&c_cmaterial->rs_c)) { /* plastic */ |
454 |
|
|
if (c_cmaterial->rs > .999) |
455 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, 1.); |
456 |
|
|
else |
457 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, |
458 |
|
|
c_cmaterial->rd/(1.-c_cmaterial->rs)); |
459 |
|
|
printf("\nvoid plastic %s\n0\n0\n", mname); |
460 |
|
|
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
461 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU), |
462 |
|
|
c_cmaterial->rs, c_cmaterial->rs_a); |
463 |
|
|
return(mname); |
464 |
|
|
} |
465 |
|
|
/* else it's metal */ |
466 |
|
|
d = c_cmaterial->rd + c_cmaterial->rs; /* average colors */ |
467 |
|
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
468 |
|
|
cvtcolor(c2, &c_cmaterial->rs_c, c_cmaterial->rs/d); |
469 |
|
|
addcolor(radrgb, c2); |
470 |
|
|
if (c_cmaterial->rs < .999) { |
471 |
|
|
d = c_cmaterial->rd/(1. - c_cmaterial->rs); |
472 |
|
|
scalecolor(radrgb, d); |
473 |
|
|
} |
474 |
|
|
printf("\nvoid metal %s\n0\n0\n", mname); |
475 |
|
|
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
476 |
|
|
colval(radrgb,GRN), colval(radrgb,BLU), |
477 |
|
|
c_cmaterial->rs, c_cmaterial->rs_a); |
478 |
|
|
return(mname); |
479 |
|
|
} |
480 |
|
|
|
481 |
|
|
|
482 |
|
|
cvtcolor(radrgb, ciec, intensity) /* convert a CIE color to Radiance */ |
483 |
|
|
COLOR radrgb; |
484 |
|
|
register C_COLOR *ciec; |
485 |
|
|
double intensity; |
486 |
|
|
{ |
487 |
|
|
static COLOR ciexyz; |
488 |
|
|
|
489 |
|
|
ciexyz[1] = intensity; |
490 |
|
|
ciexyz[0] = ciec->cx/ciec->cy*ciexyz[1]; |
491 |
|
|
ciexyz[2] = ciexyz[1]*(1./ciec->cy - 1.) - ciexyz[0]; |
492 |
|
|
cie_rgb(radrgb, ciexyz); |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
|
496 |
|
|
char * |
497 |
|
|
object() /* return current object name */ |
498 |
|
|
{ |
499 |
|
|
static char objbuf[64]; |
500 |
|
|
register int i; |
501 |
|
|
register char *cp; |
502 |
|
|
int len; |
503 |
|
|
|
504 |
|
|
i = obj_nnames - sizeof(objbuf)/16; |
505 |
|
|
if (i < 0) |
506 |
|
|
i = 0; |
507 |
|
|
for (cp = objbuf; i < obj_nnames && |
508 |
|
|
cp + (len=strlen(obj_name[i])) < objbuf+sizeof(objbuf)-1; |
509 |
|
|
i++, *cp++ = '.') { |
510 |
|
|
strcpy(cp, obj_name[i]); |
511 |
|
|
cp += len; |
512 |
|
|
} |
513 |
|
|
*cp = '\0'; |
514 |
|
|
return(objbuf); |
515 |
|
|
} |
516 |
|
|
|
517 |
|
|
|
518 |
|
|
char * |
519 |
|
|
addarg(op, arg) /* add argument and advance pointer */ |
520 |
|
|
register char *op, *arg; |
521 |
|
|
{ |
522 |
|
|
*op = ' '; |
523 |
|
|
while (*++op = *arg++) |
524 |
|
|
; |
525 |
|
|
return(op); |
526 |
|
|
} |