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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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/* |
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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 <stdlib.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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|
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#include "platform.h" |
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#include "mgf_parser.h" |
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#include "color.h" |
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#include "tmesh.h" |
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double emult = 1.; /* emitter multiplier */ |
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FILE *matfp = stdout; /* material output file */ |
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FILE *matfp; /* material output file */ |
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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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|
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extern int r_comment(int ac, char **av); |
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extern int r_cone(int ac, char **av); |
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extern int r_cyl(int ac, char **av); |
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extern int r_sph(int ac, char **av); |
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extern int r_ring(int ac, char **av); |
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extern int r_face(int ac, char **av); |
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extern int r_ies(int ac, char **av); |
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extern void putsided(char *mname); |
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extern char * material(void); |
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extern char * object(void); |
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extern char * addarg(char *op, char *arg); |
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extern void do_tri(char *mat, C_VERTEX *cv1, C_VERTEX *cv2, C_VERTEX *cv3, int iv); |
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extern void cvtcolor(COLOR radrgb, register C_COLOR *ciec, double intensity); |
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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 |
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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, rv; |
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int i; |
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|
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matfp = stdout; |
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/* print out parser version */ |
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printf("## Translated from MGF Version %d.%d\n", MG_VMAJOR, MG_VMINOR); |
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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_CMIX] = c_hcolor; |
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mg_ehand[MG_E_CSPEC] = c_hcolor; |
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mg_ehand[MG_E_CXY] = c_hcolor; |
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mg_ehand[MG_E_CCT] = 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_IR] = c_hmaterial; |
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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_SIDES] = 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_ehand[MG_E_COMMENT] = r_comment; /* we pass comments */ |
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mg_ehand[MG_E_COLOR] = c_hcolor; /* they get color */ |
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mg_ehand[MG_E_CONE] = r_cone; /* we do cones */ |
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mg_ehand[MG_E_CMIX] = c_hcolor; /* they mix colors */ |
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mg_ehand[MG_E_CSPEC] = c_hcolor; /* they get spectra */ |
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mg_ehand[MG_E_CXY] = c_hcolor; /* they get chromaticities */ |
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mg_ehand[MG_E_CCT] = c_hcolor; /* they get color temp's */ |
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mg_ehand[MG_E_CYL] = r_cyl; /* we do cylinders */ |
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mg_ehand[MG_E_ED] = c_hmaterial; /* they get emission */ |
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mg_ehand[MG_E_FACE] = r_face; /* we do faces */ |
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mg_ehand[MG_E_IES] = r_ies; /* we do IES files */ |
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mg_ehand[MG_E_IR] = c_hmaterial; /* they get refractive index */ |
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mg_ehand[MG_E_MATERIAL] = c_hmaterial; /* they get materials */ |
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mg_ehand[MG_E_NORMAL] = c_hvertex; /* they get normals */ |
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mg_ehand[MG_E_OBJECT] = obj_handler; /* they track object names */ |
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mg_ehand[MG_E_POINT] = c_hvertex; /* they get points */ |
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mg_ehand[MG_E_RD] = c_hmaterial; /* they get diffuse refl. */ |
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mg_ehand[MG_E_RING] = r_ring; /* we do rings */ |
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mg_ehand[MG_E_RS] = c_hmaterial; /* they get specular refl. */ |
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mg_ehand[MG_E_SIDES] = c_hmaterial; /* they get # sides */ |
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mg_ehand[MG_E_SPH] = r_sph; /* we do spheres */ |
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mg_ehand[MG_E_TD] = c_hmaterial; /* they get diffuse trans. */ |
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mg_ehand[MG_E_TS] = c_hmaterial; /* they get specular trans. */ |
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mg_ehand[MG_E_VERTEX] = c_hvertex; /* they get vertices */ |
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mg_ehand[MG_E_XF] = xf_handler; /* they track transforms */ |
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mg_init(); /* initialize the parser */ |
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/* get options & print header */ |
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/* get our 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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} |
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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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if (mg_load(NULL) != MG_OK) |
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exit(1); |
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if (mg_nunknown) |
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printf("## %s: %u unknown entities\n", |
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argv[0], mg_nunknown); |
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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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if (mg_load(argv[i]) != MG_OK) |
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exit(1); |
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if (mg_nunknown) { |
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printf("## %s %s: %u unknown entities\n", |
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argv[0], argv[i], mg_nunknown); |
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mg_nunknown = 0; |
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} |
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} |
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exit(0); |
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userr: |
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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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r_comment( /* 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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{ |
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putchar('#'); /* use Radiance comment character */ |
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while (--ac) { |
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while (--ac) { /* pass through verbatim */ |
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putchar(' '); |
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fputs(*++av, stdout); |
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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; |
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char **av; |
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r_cone( /* put out a cone */ |
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int ac, |
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char **av |
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) |
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{ |
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static int ncones; |
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char *mat; |
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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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|
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/* check argument count and type */ |
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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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/* get the endpoint vertices */ |
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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(p1, cv1->p); /* transform endpoints */ |
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xf_xfmpoint(p2, cv2->p); |
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r1 = xf_scale(atof(av[2])); |
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r1 = xf_scale(atof(av[2])); /* scale radii */ |
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r2 = xf_scale(atof(av[4])); |
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inv = r1 < 0.; |
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if (r1 == 0.) { |
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inv = r1 < 0.; /* check for inverted cone */ |
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if (r1 == 0.) { /* check for illegal radii */ |
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if (r2 == 0.) |
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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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} else if (r2 != 0. && inv ^ (r2 < 0.)) |
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return(MG_EILL); |
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if (inv) { |
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r1 = -r1; |
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r2 = -r2; |
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} |
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if ((mat = material()) == NULL) |
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if ((mat = material()) == NULL) /* get material */ |
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return(MG_EBADMAT); |
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/* spit the sucker out */ |
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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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int |
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r_cyl(ac, av) /* put out a cylinder */ |
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int ac; |
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char **av; |
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r_cyl( /* put out a cylinder */ |
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int ac, |
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char **av |
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) |
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{ |
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static int ncyls; |
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char *mat; |
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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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|
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/* check argument count and type */ |
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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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/* get the endpoint vertices */ |
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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(p1, cv1->p); /* transform endpoints */ |
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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 = xf_scale(atof(av[2])); /* scale radius */ |
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> |
if ((inv = rad < 0.)) /* check for inverted cylinder */ |
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rad = -rad; |
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if ((mat = material()) == NULL) |
229 |
> |
if ((mat = material()) == NULL) /* get material */ |
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return(MG_EBADMAT); |
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/* spit out the primitive */ |
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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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int |
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r_sph(ac, av) /* put out a sphere */ |
244 |
< |
int ac; |
245 |
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char **av; |
243 |
> |
r_sph( /* put out a sphere */ |
244 |
> |
int ac, |
245 |
> |
char **av |
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> |
) |
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{ |
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static int nsphs; |
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char *mat; |
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C_VERTEX *cv; |
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FVECT cent; |
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int inv; |
254 |
< |
|
254 |
> |
/* check argument count and type */ |
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if (ac != 3) |
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return(MG_EARGC); |
257 |
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if (!isflt(av[2])) |
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return(MG_ETYPE); |
259 |
< |
if ((cv = c_getvert(av[1])) == NULL) |
259 |
> |
if ((cv = c_getvert(av[1])) == NULL) /* get center vertex */ |
260 |
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return(MG_EUNDEF); |
261 |
< |
xf_xfmpoint(cent, cv->p); |
262 |
< |
rad = xf_scale(atof(av[2])); |
263 |
< |
if ((inv = rad < 0.)) |
261 |
> |
xf_xfmpoint(cent, cv->p); /* transform center */ |
262 |
> |
rad = xf_scale(atof(av[2])); /* scale radius */ |
263 |
> |
if ((inv = rad < 0.)) /* check for inversion */ |
264 |
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rad = -rad; |
265 |
< |
if ((mat = material()) == NULL) |
265 |
> |
if ((mat = material()) == NULL) /* get material */ |
266 |
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return(MG_EBADMAT); |
267 |
+ |
/* spit out primitive */ |
268 |
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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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|
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|
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int |
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< |
r_ring(ac, av) /* put out a ring */ |
278 |
< |
int ac; |
279 |
< |
char **av; |
277 |
> |
r_ring( /* put out a ring */ |
278 |
> |
int ac, |
279 |
> |
char **av |
280 |
> |
) |
281 |
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{ |
282 |
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static int nrings; |
283 |
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char *mat; |
284 |
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double r1, r2; |
285 |
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C_VERTEX *cv; |
286 |
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FVECT cent, norm; |
287 |
< |
|
287 |
> |
/* check argument count and type */ |
288 |
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if (ac != 4) |
289 |
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return(MG_EARGC); |
290 |
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if (!isflt(av[2]) || !isflt(av[3])) |
291 |
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return(MG_ETYPE); |
292 |
< |
if ((cv = c_getvert(av[1])) == NULL) |
292 |
> |
if ((cv = c_getvert(av[1])) == NULL) /* get center vertex */ |
293 |
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return(MG_EUNDEF); |
294 |
< |
if (is0vect(cv->n)) |
294 |
> |
if (is0vect(cv->n)) /* make sure we have normal */ |
295 |
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return(MG_EILL); |
296 |
< |
xf_xfmpoint(cent, cv->p); |
297 |
< |
xf_rotvect(norm, cv->n); |
298 |
< |
r1 = xf_scale(atof(av[2])); |
296 |
> |
xf_xfmpoint(cent, cv->p); /* transform center */ |
297 |
> |
xf_rotvect(norm, cv->n); /* rotate normal */ |
298 |
> |
r1 = xf_scale(atof(av[2])); /* scale radii */ |
299 |
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r2 = xf_scale(atof(av[3])); |
300 |
< |
if (r1 < 0. | r2 <= r1) |
300 |
> |
if ((r1 < 0.) | (r2 <= r1)) |
301 |
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return(MG_EILL); |
302 |
< |
if ((mat = material()) == NULL) |
302 |
> |
if ((mat = material()) == NULL) /* get material */ |
303 |
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return(MG_EBADMAT); |
304 |
+ |
/* spit out primitive */ |
305 |
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printf("\n%s ring %sr%d\n", mat, object(), ++nrings); |
306 |
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printf("0\n0\n8\n"); |
307 |
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putv(cent); |
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|
313 |
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|
314 |
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int |
315 |
< |
r_face(ac, av) /* convert a face */ |
316 |
< |
int ac; |
317 |
< |
char **av; |
315 |
> |
r_face( /* convert a face */ |
316 |
> |
int ac, |
317 |
> |
char **av |
318 |
> |
) |
319 |
|
{ |
320 |
|
static int nfaces; |
321 |
+ |
int myi = invert; |
322 |
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char *mat; |
323 |
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register int i; |
324 |
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register C_VERTEX *cv; |
325 |
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FVECT v; |
287 |
– |
int rv; |
326 |
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|
327 |
+ |
/* check argument count and type */ |
328 |
|
if (ac < 4) |
329 |
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return(MG_EARGC); |
330 |
< |
if ((mat = material()) == NULL) |
330 |
> |
if ((mat = material()) == NULL) /* get material */ |
331 |
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return(MG_EBADMAT); |
332 |
< |
if (ac <= 5) { /* check for surface normals */ |
332 |
> |
if (ac <= 5) { /* check for smoothing */ |
333 |
> |
C_VERTEX *cva[5]; |
334 |
|
for (i = 1; i < ac; i++) { |
335 |
< |
if ((cv = c_getvert(av[i])) == NULL) |
335 |
> |
if ((cva[i-1] = c_getvert(av[i])) == NULL) |
336 |
|
return(MG_EUNDEF); |
337 |
< |
if (is0vect(cv->n)) |
337 |
> |
if (is0vect(cva[i-1]->n)) |
338 |
|
break; |
339 |
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} |
340 |
< |
if (i == ac) { /* break into triangles */ |
341 |
< |
do_tri(mat, av[1], av[2], av[3]); |
340 |
> |
if (i < ac) |
341 |
> |
i = ISFLAT; |
342 |
> |
else |
343 |
> |
i = flat_tri(cva[0]->p, cva[1]->p, cva[2]->p, |
344 |
> |
cva[0]->n, cva[1]->n, cva[2]->n); |
345 |
> |
if (i == DEGEN) |
346 |
> |
return(MG_OK); /* degenerate (error?) */ |
347 |
> |
if (i == RVBENT) { |
348 |
> |
myi = !myi; |
349 |
> |
i = ISBENT; |
350 |
> |
} else if (i == RVFLAT) { |
351 |
> |
myi = !myi; |
352 |
> |
i = ISFLAT; |
353 |
> |
} |
354 |
> |
if (i == ISBENT) { /* smoothed triangles */ |
355 |
> |
do_tri(mat, cva[0], cva[1], cva[2], myi); |
356 |
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if (ac == 5) |
357 |
< |
do_tri(mat, av[3], av[4], av[1]); |
357 |
> |
do_tri(mat, cva[2], cva[3], cva[0], myi); |
358 |
|
return(MG_OK); |
359 |
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} |
360 |
|
} |
361 |
+ |
/* spit out unsmoothed primitive */ |
362 |
|
printf("\n%s polygon %sf%d\n", mat, object(), ++nfaces); |
363 |
|
printf("0\n0\n%d\n", 3*(ac-1)); |
364 |
< |
for (i = 1; i < ac; i++) { |
365 |
< |
if ((cv = c_getvert(av[invert ? ac-i : i])) == NULL) |
364 |
> |
for (i = 1; i < ac; i++) { /* get, transform, print each vertex */ |
365 |
> |
if ((cv = c_getvert(av[myi ? ac-i : i])) == NULL) |
366 |
|
return(MG_EUNDEF); |
367 |
|
xf_xfmpoint(v, cv->p); |
368 |
|
putv(v); |
371 |
|
} |
372 |
|
|
373 |
|
|
374 |
< |
r_ies(ac, av) /* convert an IES luminaire file */ |
375 |
< |
int ac; |
376 |
< |
char **av; |
374 |
> |
int |
375 |
> |
r_ies( /* convert an IES luminaire file */ |
376 |
> |
int ac, |
377 |
> |
char **av |
378 |
> |
) |
379 |
|
{ |
380 |
|
int xa0 = 2; |
381 |
< |
char combuf[72]; |
381 |
> |
char combuf[128]; |
382 |
|
char fname[48]; |
383 |
|
char *oname; |
384 |
|
register char *op; |
385 |
|
register int i; |
386 |
< |
|
386 |
> |
/* check argument count */ |
387 |
|
if (ac < 2) |
388 |
|
return(MG_EARGC); |
389 |
< |
(void)strcpy(combuf, "ies2rad"); |
390 |
< |
op = combuf + 7; |
391 |
< |
if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
392 |
< |
if (!isflt(av[xa0+1])) |
336 |
< |
return(MG_ETYPE); |
337 |
< |
op = addarg(addarg(op, "-m"), av[xa0+1]); |
338 |
< |
xa0 += 2; |
339 |
< |
} |
340 |
< |
if (access(av[1], 0) == -1) |
341 |
< |
return(MG_ENOFILE); |
342 |
< |
*op++ = ' '; /* IES filename goes last */ |
343 |
< |
(void)strcpy(op, av[1]); |
344 |
< |
system(combuf); /* run ies2rad */ |
345 |
< |
/* now let's find the output file */ |
346 |
< |
if ((op = strrchr(av[1], '/')) == NULL) |
389 |
> |
/* construct output file name */ |
390 |
> |
if ((op = strrchr(av[1], '/')) != NULL) |
391 |
> |
op++; |
392 |
> |
else |
393 |
|
op = av[1]; |
394 |
|
(void)strcpy(fname, op); |
395 |
|
if ((op = strrchr(fname, '.')) == NULL) |
396 |
|
op = fname + strlen(fname); |
397 |
|
(void)strcpy(op, ".rad"); |
398 |
< |
if (access(fname, 0) == -1) |
399 |
< |
return(MG_EINCL); |
400 |
< |
/* put out xform command */ |
401 |
< |
printf("\n!xform"); |
398 |
> |
/* see if we need to run ies2rad */ |
399 |
> |
if (access(fname, 0) == -1) { |
400 |
> |
(void)strcpy(combuf, "ies2rad");/* build ies2rad command */ |
401 |
> |
op = combuf + 7; /* get -m option (first) */ |
402 |
> |
if (ac-xa0 >= 2 && !strcmp(av[xa0], "-m")) { |
403 |
> |
if (!isflt(av[xa0+1])) |
404 |
> |
return(MG_ETYPE); |
405 |
> |
op = addarg(addarg(op, "-m"), av[xa0+1]); |
406 |
> |
xa0 += 2; |
407 |
> |
} |
408 |
> |
*op++ = ' '; /* build IES filename */ |
409 |
> |
i = 0; |
410 |
> |
if (mg_file != NULL && |
411 |
> |
(oname = strrchr(mg_file->fname,'/')) != NULL) { |
412 |
> |
i = oname - mg_file->fname + 1; |
413 |
> |
(void)strcpy(op, mg_file->fname); |
414 |
> |
} |
415 |
> |
(void)strcpy(op+i, av[1]); |
416 |
> |
if (access(op, 0) == -1) /* check for file existence */ |
417 |
> |
return(MG_ENOFILE); |
418 |
> |
system(combuf); /* run ies2rad */ |
419 |
> |
if (access(fname, 0) == -1) /* check success */ |
420 |
> |
return(MG_EINCL); |
421 |
> |
} |
422 |
> |
printf("\n!xform"); /* put out xform command */ |
423 |
|
oname = object(); |
424 |
|
if (*oname) { |
425 |
|
printf(" -n "); |
437 |
|
} |
438 |
|
|
439 |
|
|
440 |
< |
do_tri(mat, vn1, vn2, vn3) /* put out smoothed triangle */ |
441 |
< |
char *mat, *vn1, *vn2, *vn3; |
440 |
> |
void |
441 |
> |
do_tri( /* put out smoothed triangle */ |
442 |
> |
char *mat, |
443 |
> |
C_VERTEX *cv1, |
444 |
> |
C_VERTEX *cv2, |
445 |
> |
C_VERTEX *cv3, |
446 |
> |
int iv |
447 |
> |
) |
448 |
|
{ |
449 |
|
static int ntris; |
450 |
|
BARYCCM bvecs; |
451 |
< |
FLOAT bcoor[3][3]; |
452 |
< |
C_VERTEX *cv1, *cv2, *cv3; |
451 |
> |
RREAL bcoor[3][3]; |
452 |
> |
C_VERTEX *cvt; |
453 |
|
FVECT v1, v2, v3; |
454 |
|
FVECT n1, n2, n3; |
455 |
|
register int i; |
456 |
< |
/* the following is repeat code, so assume it's OK */ |
457 |
< |
cv2 = c_getvert(vn2); |
458 |
< |
if (invert) { |
459 |
< |
cv3 = c_getvert(vn1); |
460 |
< |
cv1 = c_getvert(vn3); |
388 |
< |
} else { |
389 |
< |
cv1 = c_getvert(vn1); |
390 |
< |
cv3 = c_getvert(vn3); |
456 |
> |
|
457 |
> |
if (iv) { /* swap vertex order if inverted */ |
458 |
> |
cvt = cv1; |
459 |
> |
cv1 = cv3; |
460 |
> |
cv3 = cvt; |
461 |
|
} |
462 |
|
xf_xfmpoint(v1, cv1->p); |
463 |
|
xf_xfmpoint(v2, cv2->p); |
464 |
|
xf_xfmpoint(v3, cv3->p); |
465 |
+ |
/* compute barycentric coords. */ |
466 |
|
if (comp_baryc(&bvecs, v1, v2, v3) < 0) |
467 |
|
return; /* degenerate triangle! */ |
468 |
< |
printf("\n%s texfunc T-nor\n", mat); |
468 |
> |
printf("\n%s texfunc T-nor\n", mat); /* put out texture */ |
469 |
|
printf("4 dx dy dz %s\n0\n", TCALNAME); |
470 |
|
xf_rotvect(n1, cv1->n); |
471 |
|
xf_rotvect(n2, cv2->n); |
475 |
|
bcoor[i][1] = n2[i]; |
476 |
|
bcoor[i][2] = n3[i]; |
477 |
|
} |
478 |
< |
put_baryc(&bvecs, bcoor, 3); |
478 |
> |
fput_baryc(&bvecs, bcoor, 3, stdout); |
479 |
> |
/* put out triangle */ |
480 |
|
printf("\nT-nor polygon %st%d\n", object(), ++ntris); |
481 |
|
printf("0\n0\n9\n"); |
482 |
|
putv(v1); |
485 |
|
} |
486 |
|
|
487 |
|
|
488 |
+ |
void |
489 |
+ |
putsided(char *mname) /* print out mixfunc for sided material */ |
490 |
+ |
{ |
491 |
+ |
fprintf(matfp, "\nvoid mixfunc %s\n", mname); |
492 |
+ |
fprintf(matfp, "4 %s void if(Rdot,1,0) .\n0\n0\n", mname); |
493 |
+ |
} |
494 |
+ |
|
495 |
+ |
|
496 |
|
char * |
497 |
< |
material() /* get (and print) current material */ |
497 |
> |
material(void) /* get (and print) current material */ |
498 |
|
{ |
499 |
|
char *mname = "mat"; |
500 |
|
COLOR radrgb, c2; |
501 |
|
double d; |
422 |
– |
register int i; |
502 |
|
|
503 |
|
if (c_cmname != NULL) |
504 |
|
mname = c_cmname; |
524 |
|
} |
525 |
|
d = c_cmaterial->rd + c_cmaterial->td + |
526 |
|
c_cmaterial->rs + c_cmaterial->ts; |
527 |
< |
if (d < 0. | d > 1.) |
527 |
> |
if ((d < 0.) | (d > 1.)) |
528 |
|
return(NULL); |
529 |
|
/* check for glass/dielectric */ |
530 |
|
if (c_cmaterial->nr > 1.1 && |
555 |
|
} |
556 |
|
/* check for trans */ |
557 |
|
if (c_cmaterial->td > .01 || c_cmaterial->ts > .01) { |
558 |
< |
double ts, a5, a6; |
480 |
< |
|
481 |
< |
if (c_cmaterial->sided) { |
482 |
< |
ts = sqrt(c_cmaterial->ts); /* approximate */ |
483 |
< |
a5 = .5; |
484 |
< |
} else { |
485 |
< |
ts = c_cmaterial->ts; |
486 |
< |
a5 = 1.; |
487 |
< |
} |
558 |
> |
double a5, a6; |
559 |
|
/* average colors */ |
560 |
< |
d = c_cmaterial->rd + c_cmaterial->td + ts; |
560 |
> |
d = c_cmaterial->rd + c_cmaterial->td + c_cmaterial->ts; |
561 |
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd/d); |
562 |
|
cvtcolor(c2, &c_cmaterial->td_c, c_cmaterial->td/d); |
563 |
|
addcolor(radrgb, c2); |
564 |
< |
cvtcolor(c2, &c_cmaterial->ts_c, ts/d); |
564 |
> |
cvtcolor(c2, &c_cmaterial->ts_c, c_cmaterial->ts/d); |
565 |
|
addcolor(radrgb, c2); |
566 |
< |
if (c_cmaterial->rs + ts > .0001) |
566 |
> |
if (c_cmaterial->rs + c_cmaterial->ts > .0001) |
567 |
|
a5 = (c_cmaterial->rs*c_cmaterial->rs_a + |
568 |
< |
ts*a5*c_cmaterial->ts_a) / |
569 |
< |
(c_cmaterial->rs + ts); |
570 |
< |
a6 = (c_cmaterial->td + ts) / |
571 |
< |
(c_cmaterial->rd + c_cmaterial->td + ts); |
568 |
> |
c_cmaterial->ts*c_cmaterial->ts_a) / |
569 |
> |
(c_cmaterial->rs + c_cmaterial->ts); |
570 |
> |
a6 = (c_cmaterial->td + c_cmaterial->ts) / |
571 |
> |
(c_cmaterial->rd + c_cmaterial->td + c_cmaterial->ts); |
572 |
|
if (a6 < .999) |
573 |
|
d = c_cmaterial->rd/(1. - c_cmaterial->rs)/(1. - a6); |
574 |
|
else |
575 |
< |
d = c_cmaterial->td + ts; |
575 |
> |
d = c_cmaterial->td + c_cmaterial->ts; |
576 |
|
scalecolor(radrgb, d); |
577 |
|
fprintf(matfp, "\nvoid trans %s\n0\n0\n", mname); |
578 |
|
fprintf(matfp, "7 %f %f %f\n", colval(radrgb,RED), |
579 |
|
colval(radrgb,GRN), colval(radrgb,BLU)); |
580 |
|
fprintf(matfp, "\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
581 |
< |
ts/(ts + c_cmaterial->td)); |
581 |
> |
c_cmaterial->ts/(c_cmaterial->ts + c_cmaterial->td)); |
582 |
> |
if (c_cmaterial->sided) |
583 |
> |
putsided(mname); |
584 |
|
return(mname); |
585 |
|
} |
586 |
|
/* check for plastic */ |
587 |
< |
if (c_cmaterial->rs < .1 && (c_cmaterial->rs < .01 || |
587 |
> |
if (c_cmaterial->rs < .08 && (c_cmaterial->rs < .1*c_cmaterial->rd || |
588 |
|
c_isgrey(&c_cmaterial->rs_c))) { |
589 |
|
cvtcolor(radrgb, &c_cmaterial->rd_c, |
590 |
|
c_cmaterial->rd/(1.-c_cmaterial->rs)); |
592 |
|
fprintf(matfp, "5 %f %f %f %f %f\n", colval(radrgb,RED), |
593 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
594 |
|
c_cmaterial->rs, c_cmaterial->rs_a); |
595 |
+ |
if (c_cmaterial->sided) |
596 |
+ |
putsided(mname); |
597 |
|
return(mname); |
598 |
|
} |
599 |
|
/* else it's metal */ |
606 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
607 |
|
c_cmaterial->rs/(c_cmaterial->rd + c_cmaterial->rs), |
608 |
|
c_cmaterial->rs_a); |
609 |
+ |
if (c_cmaterial->sided) |
610 |
+ |
putsided(mname); |
611 |
|
return(mname); |
612 |
|
} |
613 |
|
|
614 |
|
|
615 |
< |
cvtcolor(radrgb, ciec, intensity) /* convert a CIE color to Radiance */ |
616 |
< |
COLOR radrgb; |
617 |
< |
register C_COLOR *ciec; |
618 |
< |
double intensity; |
615 |
> |
void |
616 |
> |
cvtcolor( /* convert a CIE XYZ color to RGB */ |
617 |
> |
COLOR radrgb, |
618 |
> |
register C_COLOR *ciec, |
619 |
> |
double intensity |
620 |
> |
) |
621 |
|
{ |
622 |
|
static COLOR ciexyz; |
623 |
|
|
630 |
|
|
631 |
|
|
632 |
|
char * |
633 |
< |
object() /* return current object name */ |
633 |
> |
object(void) /* return current object name */ |
634 |
|
{ |
635 |
|
static char objbuf[64]; |
636 |
|
register int i; |
637 |
|
register char *cp; |
638 |
|
int len; |
639 |
< |
|
639 |
> |
/* tracked by obj_handler */ |
640 |
|
i = obj_nnames - sizeof(objbuf)/16; |
641 |
|
if (i < 0) |
642 |
|
i = 0; |
652 |
|
|
653 |
|
|
654 |
|
char * |
655 |
< |
addarg(op, arg) /* add argument and advance pointer */ |
656 |
< |
register char *op, *arg; |
655 |
> |
addarg( /* add argument and advance pointer */ |
656 |
> |
register char *op, |
657 |
> |
register char *arg |
658 |
> |
) |
659 |
|
{ |
660 |
|
*op = ' '; |
661 |
< |
while (*++op = *arg++) |
661 |
> |
while ( (*++op = *arg++) ) |
662 |
|
; |
663 |
|
return(op); |
664 |
|
} |