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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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|
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|
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double emult = 1.; /* emitter multiplier */ |
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|
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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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> |
FILE *matfp; /* material output file */ |
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|
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|
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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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> |
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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> |
|
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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_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_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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emult = atof(argv[++i]); |
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printf(" %s", argv[i]); |
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break; |
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case 'm': /* materials file */ |
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matfp = fopen(argv[++i], "a"); |
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if (matfp == NULL) { |
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fprintf(stderr, "%s: cannot append\n", argv[i]); |
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exit(1); |
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} |
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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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> |
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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fprintf(stderr, "Usage: %s [-g dist][-m mult] [file.mgf] ..\n", |
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fprintf(stderr, "Usage: %s [-g dist][-e mult][-m matf] [file.mgf] ..\n", |
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argv[0]); |
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exit(1); |
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} |
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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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> |
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 */ |
| 180 |
> |
if (r1 == 0.) { /* check for illegal radii */ |
| 181 |
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if (r2 == 0.) |
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return(MG_EILL); |
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inv = r2 < 0.; |
| 184 |
< |
} else if (r2 != 0. && inv ^ r2 < 0.) |
| 184 |
> |
} else if (r2 != 0. && inv ^ (r2 < 0.)) |
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return(MG_EILL); |
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if (inv) { |
| 187 |
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r1 = -r1; |
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r2 = -r2; |
| 189 |
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} |
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< |
if ((mat = material()) == NULL) |
| 190 |
> |
if ((mat = material()) == NULL) /* get material */ |
| 191 |
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return(MG_EBADMAT); |
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+ |
/* spit the sucker out */ |
| 193 |
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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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|
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|
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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; |
| 215 |
< |
|
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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) |
| 223 |
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return(MG_EUNDEF); |
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< |
xf_xfmpoint(p1, cv1->p); |
| 224 |
> |
xf_xfmpoint(p1, cv1->p); /* transform endpoints */ |
| 225 |
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xf_xfmpoint(p2, cv2->p); |
| 226 |
< |
rad = xf_scale(atof(av[2])); |
| 227 |
< |
if ((inv = rad < 0.)) |
| 226 |
> |
rad = xf_scale(atof(av[2])); /* scale radius */ |
| 227 |
> |
if ((inv = rad < 0.)) /* check for inverted cylinder */ |
| 228 |
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rad = -rad; |
| 229 |
< |
if ((mat = material()) == NULL) |
| 229 |
> |
if ((mat = material()) == NULL) /* get material */ |
| 230 |
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return(MG_EBADMAT); |
| 231 |
+ |
/* spit out the primitive */ |
| 232 |
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printf("\n%s %s %scy%d\n", mat, inv ? "tube" : "cylinder", |
| 233 |
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object(), ++ncyls); |
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printf("0\n0\n7\n"); |
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|
| 241 |
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|
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int |
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< |
r_sph(ac, av) /* put out a sphere */ |
| 244 |
< |
int ac; |
| 245 |
< |
char **av; |
| 243 |
> |
r_sph( /* put out a sphere */ |
| 244 |
> |
int ac, |
| 245 |
> |
char **av |
| 246 |
> |
) |
| 247 |
|
{ |
| 248 |
|
static int nsphs; |
| 249 |
|
char *mat; |
| 251 |
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C_VERTEX *cv; |
| 252 |
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FVECT cent; |
| 253 |
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int inv; |
| 254 |
< |
|
| 254 |
> |
/* check argument count and type */ |
| 255 |
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if (ac != 3) |
| 256 |
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return(MG_EARGC); |
| 257 |
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if (!isflt(av[2])) |
| 258 |
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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 |
|
rad = -rad; |
| 265 |
< |
if ((mat = material()) == NULL) |
| 265 |
> |
if ((mat = material()) == NULL) /* get material */ |
| 266 |
|
return(MG_EBADMAT); |
| 267 |
+ |
/* spit out primitive */ |
| 268 |
|
printf("\n%s %s %ss%d\n", mat, inv ? "bubble" : "sphere", |
| 269 |
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object(), ++nsphs); |
| 270 |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
| 274 |
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|
| 275 |
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|
| 276 |
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int |
| 277 |
< |
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 |
|
{ |
| 282 |
|
static int nrings; |
| 283 |
|
char *mat; |
| 284 |
|
double r1, r2; |
| 285 |
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C_VERTEX *cv; |
| 286 |
|
FVECT cent, norm; |
| 287 |
< |
|
| 287 |
> |
/* check argument count and type */ |
| 288 |
|
if (ac != 4) |
| 289 |
|
return(MG_EARGC); |
| 290 |
|
if (!isflt(av[2]) || !isflt(av[3])) |
| 291 |
|
return(MG_ETYPE); |
| 292 |
< |
if ((cv = c_getvert(av[1])) == NULL) |
| 292 |
> |
if ((cv = c_getvert(av[1])) == NULL) /* get center vertex */ |
| 293 |
|
return(MG_EUNDEF); |
| 294 |
< |
if (is0vect(cv->n)) |
| 294 |
> |
if (is0vect(cv->n)) /* make sure we have normal */ |
| 295 |
|
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 |
|
r2 = xf_scale(atof(av[3])); |
| 300 |
< |
if (r1 < 0. | r2 <= r1) |
| 300 |
> |
if ((r1 < 0.) | (r2 <= r1)) |
| 301 |
|
return(MG_EILL); |
| 302 |
< |
if ((mat = material()) == NULL) |
| 302 |
> |
if ((mat = material()) == NULL) /* get material */ |
| 303 |
|
return(MG_EBADMAT); |
| 304 |
+ |
/* spit out primitive */ |
| 305 |
|
printf("\n%s ring %sr%d\n", mat, object(), ++nrings); |
| 306 |
|
printf("0\n0\n8\n"); |
| 307 |
|
putv(cent); |
| 312 |
|
|
| 313 |
|
|
| 314 |
|
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 |
|
char *mat; |
| 323 |
|
register int i; |
| 324 |
|
register C_VERTEX *cv; |
| 325 |
|
FVECT v; |
| 275 |
– |
int rv; |
| 326 |
|
|
| 327 |
+ |
/* check argument count and type */ |
| 328 |
|
if (ac < 4) |
| 329 |
|
return(MG_EARGC); |
| 330 |
< |
if ((mat = material()) == NULL) |
| 330 |
> |
if ((mat = material()) == NULL) /* get material */ |
| 331 |
|
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 |
|
} |
| 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 |
|
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 |
|
} |
| 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])) |
| 324 |
< |
return(MG_ETYPE); |
| 325 |
< |
op = addarg(addarg(op, "-m"), av[xa0+1]); |
| 326 |
< |
xa0 += 2; |
| 327 |
< |
} |
| 328 |
< |
if (access(av[1], 0) == -1) |
| 329 |
< |
return(MG_ENOFILE); |
| 330 |
< |
*op++ = ' '; /* IES filename goes last */ |
| 331 |
< |
(void)strcpy(op, av[1]); |
| 332 |
< |
system(combuf); /* run ies2rad */ |
| 333 |
< |
/* now let's find the output file */ |
| 334 |
< |
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); |
| 376 |
< |
} else { |
| 377 |
< |
cv1 = c_getvert(vn1); |
| 378 |
< |
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); |
| 476 |
|
bcoor[i][2] = n3[i]; |
| 477 |
|
} |
| 478 |
|
put_baryc(&bvecs, bcoor, 3); |
| 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; |
| 410 |
– |
register int i; |
| 502 |
|
|
| 503 |
|
if (c_cmname != NULL) |
| 504 |
|
mname = c_cmname; |
| 508 |
|
c_cmaterial->clock = 0; |
| 509 |
|
if (c_cmaterial->ed > .1) { /* emitter */ |
| 510 |
|
cvtcolor(radrgb, &c_cmaterial->ed_c, |
| 511 |
< |
emult*c_cmaterial->ed/WHTEFFICACY); |
| 511 |
> |
emult*c_cmaterial->ed/(PI*WHTEFFICACY)); |
| 512 |
|
if (glowdist < FHUGE) { /* do a glow */ |
| 513 |
< |
printf("\nvoid glow %s\n0\n0\n", mname); |
| 514 |
< |
printf("4 %f %f %f %f\n", colval(radrgb,RED), |
| 513 |
> |
fprintf(matfp, "\nvoid glow %s\n0\n0\n", mname); |
| 514 |
> |
fprintf(matfp, "4 %f %f %f %f\n", colval(radrgb,RED), |
| 515 |
|
colval(radrgb,GRN), |
| 516 |
|
colval(radrgb,BLU), glowdist); |
| 517 |
|
} else { |
| 518 |
< |
printf("\nvoid light %s\n0\n0\n", mname); |
| 519 |
< |
printf("3 %f %f %f\n", colval(radrgb,RED), |
| 518 |
> |
fprintf(matfp, "\nvoid light %s\n0\n0\n", mname); |
| 519 |
> |
fprintf(matfp, "3 %f %f %f\n", colval(radrgb,RED), |
| 520 |
|
colval(radrgb,GRN), |
| 521 |
|
colval(radrgb,BLU)); |
| 522 |
|
} |
| 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 && |
| 531 |
+ |
c_cmaterial->ts > .25 && c_cmaterial->rs <= .125 && |
| 532 |
+ |
c_cmaterial->td <= .01 && c_cmaterial->rd <= .01 && |
| 533 |
+ |
c_cmaterial->rs_a <= .01 && c_cmaterial->ts_a <= .01) { |
| 534 |
+ |
cvtcolor(radrgb, &c_cmaterial->ts_c, |
| 535 |
+ |
c_cmaterial->ts + c_cmaterial->rs); |
| 536 |
+ |
if (c_cmaterial->sided) { /* dielectric */ |
| 537 |
+ |
colval(radrgb,RED) = pow(colval(radrgb,RED), |
| 538 |
+ |
1./C_1SIDEDTHICK); |
| 539 |
+ |
colval(radrgb,GRN) = pow(colval(radrgb,GRN), |
| 540 |
+ |
1./C_1SIDEDTHICK); |
| 541 |
+ |
colval(radrgb,BLU) = pow(colval(radrgb,BLU), |
| 542 |
+ |
1./C_1SIDEDTHICK); |
| 543 |
+ |
fprintf(matfp, "\nvoid dielectric %s\n0\n0\n", mname); |
| 544 |
+ |
fprintf(matfp, "5 %g %g %g %f 0\n", colval(radrgb,RED), |
| 545 |
+ |
colval(radrgb,GRN), colval(radrgb,BLU), |
| 546 |
+ |
c_cmaterial->nr); |
| 547 |
+ |
return(mname); |
| 548 |
+ |
} |
| 549 |
+ |
/* glass */ |
| 550 |
+ |
fprintf(matfp, "\nvoid glass %s\n0\n0\n", mname); |
| 551 |
+ |
fprintf(matfp, "4 %f %f %f %f\n", colval(radrgb,RED), |
| 552 |
+ |
colval(radrgb,GRN), colval(radrgb,BLU), |
| 553 |
+ |
c_cmaterial->nr); |
| 554 |
+ |
return(mname); |
| 555 |
+ |
} |
| 556 |
|
/* check for trans */ |
| 557 |
|
if (c_cmaterial->td > .01 || c_cmaterial->ts > .01) { |
| 558 |
< |
double ts, a5, a6; |
| 441 |
< |
|
| 442 |
< |
if (c_cmaterial->sided) { |
| 443 |
< |
ts = sqrt(c_cmaterial->ts); /* approximate */ |
| 444 |
< |
a5 = .5; |
| 445 |
< |
} else { |
| 446 |
< |
ts = c_cmaterial->ts; |
| 447 |
< |
a5 = 1.; |
| 448 |
< |
} |
| 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 |
< |
printf("\nvoid trans %s\n0\n0\n", mname); |
| 578 |
< |
printf("7 %f %f %f\n", colval(radrgb,RED), |
| 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 |
< |
printf("\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
| 581 |
< |
ts/(ts + c_cmaterial->td)); |
| 580 |
> |
fprintf(matfp, "\t%f %f %f %f\n", c_cmaterial->rs, a5, a6, |
| 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 || |
| 476 |
< |
c_isgrey(&c_cmaterial->rs_c))) { |
| 587 |
> |
if (c_cmaterial->rs < .1) { |
| 588 |
|
cvtcolor(radrgb, &c_cmaterial->rd_c, |
| 589 |
|
c_cmaterial->rd/(1.-c_cmaterial->rs)); |
| 590 |
< |
printf("\nvoid plastic %s\n0\n0\n", mname); |
| 591 |
< |
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
| 590 |
> |
fprintf(matfp, "\nvoid plastic %s\n0\n0\n", mname); |
| 591 |
> |
fprintf(matfp, "5 %f %f %f %f %f\n", colval(radrgb,RED), |
| 592 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
| 593 |
|
c_cmaterial->rs, c_cmaterial->rs_a); |
| 594 |
+ |
if (c_cmaterial->sided) |
| 595 |
+ |
putsided(mname); |
| 596 |
|
return(mname); |
| 597 |
|
} |
| 598 |
|
/* else it's metal */ |
| 600 |
|
cvtcolor(radrgb, &c_cmaterial->rd_c, c_cmaterial->rd); |
| 601 |
|
cvtcolor(c2, &c_cmaterial->rs_c, c_cmaterial->rs); |
| 602 |
|
addcolor(radrgb, c2); |
| 603 |
< |
printf("\nvoid metal %s\n0\n0\n", mname); |
| 604 |
< |
printf("5 %f %f %f %f %f\n", colval(radrgb,RED), |
| 603 |
> |
fprintf(matfp, "\nvoid metal %s\n0\n0\n", mname); |
| 604 |
> |
fprintf(matfp, "5 %f %f %f %f %f\n", colval(radrgb,RED), |
| 605 |
|
colval(radrgb,GRN), colval(radrgb,BLU), |
| 606 |
|
c_cmaterial->rs/(c_cmaterial->rd + c_cmaterial->rs), |
| 607 |
|
c_cmaterial->rs_a); |
| 608 |
+ |
if (c_cmaterial->sided) |
| 609 |
+ |
putsided(mname); |
| 610 |
|
return(mname); |
| 611 |
|
} |
| 612 |
|
|
| 613 |
|
|
| 614 |
< |
cvtcolor(radrgb, ciec, intensity) /* convert a CIE color to Radiance */ |
| 615 |
< |
COLOR radrgb; |
| 616 |
< |
register C_COLOR *ciec; |
| 617 |
< |
double intensity; |
| 614 |
> |
void |
| 615 |
> |
cvtcolor( /* convert a CIE XYZ color to RGB */ |
| 616 |
> |
COLOR radrgb, |
| 617 |
> |
register C_COLOR *ciec, |
| 618 |
> |
double intensity |
| 619 |
> |
) |
| 620 |
|
{ |
| 621 |
|
static COLOR ciexyz; |
| 622 |
|
|
| 629 |
|
|
| 630 |
|
|
| 631 |
|
char * |
| 632 |
< |
object() /* return current object name */ |
| 632 |
> |
object(void) /* return current object name */ |
| 633 |
|
{ |
| 634 |
|
static char objbuf[64]; |
| 635 |
|
register int i; |
| 636 |
|
register char *cp; |
| 637 |
|
int len; |
| 638 |
< |
|
| 638 |
> |
/* tracked by obj_handler */ |
| 639 |
|
i = obj_nnames - sizeof(objbuf)/16; |
| 640 |
|
if (i < 0) |
| 641 |
|
i = 0; |
| 651 |
|
|
| 652 |
|
|
| 653 |
|
char * |
| 654 |
< |
addarg(op, arg) /* add argument and advance pointer */ |
| 655 |
< |
register char *op, *arg; |
| 654 |
> |
addarg( /* add argument and advance pointer */ |
| 655 |
> |
register char *op, |
| 656 |
> |
register char *arg |
| 657 |
> |
) |
| 658 |
|
{ |
| 659 |
|
*op = ' '; |
| 660 |
< |
while (*++op = *arg++) |
| 660 |
> |
while ( (*++op = *arg++) ) |
| 661 |
|
; |
| 662 |
|
return(op); |
| 663 |
|
} |
