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greg |
2.1 |
#ifndef lint
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static const char RCSid[] = "$Id: mgf2inv.c,v 1.12 2011/01/14 05:46:12 greg Exp $";
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#endif
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/*
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* Convert MGF to Inventor file.
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*
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* December 1995 Greg Ward
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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 <ctype.h>
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#include <string.h>
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#include "mgf_parser.h"
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#include "lookup.h"
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#define O_INV1 1 /* Inventor 1.0 output */
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#define O_INV2 2 /* Inventor 2.0 output */
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#define O_VRML1 3 /* VRML 1.0 output */
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| 28 |
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#define MAXID 48 /* maximum identifier length */
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#define VERTFMT "%+16.9e %+16.9e %+16.9e\n%+6.3f %+6.3f %+6.3f"
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#define VZVECT "+0.000 +0.000 +0.000"
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#define VFSEPPOS 50 /* position of newline in above */
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#define VFLEN 72 /* total vertex string length */
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#define MAXVERT 10240 /* maximum cached vertices */
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#define setvkey(k,v) sprintf(k,VERTFMT,(v)->p[0],(v)->p[1],(v)->p[2],\
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(v)->n[0],(v)->n[1],(v)->n[2]);
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char vlist[MAXVERT][VFLEN]; /* our vertex cache */
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int nverts; /* current cache size */
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LUTAB vert_tab = LU_SINIT(NULL,NULL);
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| 44 |
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struct face {
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| 45 |
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struct face *next; /* next face in list */
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short nv; /* number of vertices */
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short vl[3]; /* vertex index list (variable) */
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} *flist, *flast; /* our face cache */
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| 50 |
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#define newface(n) (struct face *)malloc(sizeof(struct face) + \
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((n) > 3 ? (n)-3 : 0)*sizeof(short))
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#define freeface(f) free(f)
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#define TABSTOP 8 /* assumed number of characters per tab */
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#define SHIFTW 2 /* nesting shift width */
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#define MAXIND 15 /* maximum indent level */
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char tabs[MAXIND*SHIFTW+1]; /* current tab-in string */
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#define curmatname (c_cmname == NULL ? "mat" : to_id(c_cmname))
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int outtype = O_INV2; /* output format */
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int i_comment(int ac, char **av);
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int i_object(int ac, char **av);
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int i_xf(int ac, char **av);
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int put_xform(register XF_SPEC *spec);
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int put_material(void);
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int i_face(int ac, char **av);
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int i_sph(int ac, char **av);
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int i_cyl(int ac, char **av);
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char * to_id(register char *name);
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char * to_id(register char *name);
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void flush_cache(void);
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int
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main(
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int argc,
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char *argv[]
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)
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{
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int i;
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/* initialize dispatch table */
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mg_ehand[MG_E_COMMENT] = i_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_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] = i_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] = i_face; /* we do faces */
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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] = i_object; /* we 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_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] = i_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] = i_xf; /* we track transforms */
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mg_init(); /* initialize the parser */
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/* get options and print format line */
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for (i = 1; i < argc && argv[i][0] == '-'; i++)
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if (!strcmp(argv[i], "-vrml"))
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outtype = O_VRML1;
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else if (!strcmp(argv[i], "-1"))
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outtype = O_INV1;
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else if (!strcmp(argv[i], "-2"))
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outtype = O_INV2;
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else
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goto userr;
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switch (outtype) {
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case O_INV1:
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printf("#Inventor V1.0 ascii\n");
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break;
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| 121 |
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case O_INV2:
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printf("#Inventor V2.0 ascii\n");
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break;
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| 124 |
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case O_VRML1:
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printf("#VRML V1.0 ascii\n");
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| 126 |
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break;
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| 127 |
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}
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| 128 |
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printf("## Translated from MGF Version %d.%d\n", MG_VMAJOR, MG_VMINOR);
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| 129 |
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printf("Separator {\n"); /* begin root node */
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| 130 |
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/* general properties */
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printf("MaterialBinding { value OVERALL }\n");
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printf("NormalBinding { value PER_VERTEX_INDEXED }\n");
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if (outtype != O_INV1) {
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printf("ShapeHints {\n");
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printf("\tvertexOrdering CLOCKWISE\n");
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printf("\tfaceType UNKNOWN_FACE_TYPE\n");
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printf("}\n");
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}
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if (i == argc) { /* load standard input */
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if (mg_load(NULL) != MG_OK)
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exit(1);
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| 142 |
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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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}
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/* load MGF files */
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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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mg_nunknown = 0;
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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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}
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| 157 |
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flush_cache(); /* flush face cache, just in case */
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printf("}\n"); /* close root node */
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exit(0);
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userr:
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fprintf(stderr, "%s: [-1|-2|-vrml] [file] ..\n", argv[0]);
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exit(1);
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}
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| 164 |
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| 165 |
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void
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indent( /* indent in or out */
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int deeper
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)
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| 170 |
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{
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| 171 |
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static int level; /* current nesting level */
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| 172 |
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register int i;
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| 173 |
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register char *cp;
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| 174 |
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| 175 |
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if (deeper) level++; /* in or out? */
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else if (level > 0) level--;
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/* compute actual shift */
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| 178 |
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if ((i = level) > MAXIND) i = MAXIND;
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| 179 |
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cp = tabs;
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| 180 |
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for (i *= SHIFTW; i >= TABSTOP; i -= TABSTOP)
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| 181 |
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*cp++ = '\t';
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| 182 |
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while (i--)
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| 183 |
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*cp++ = ' ';
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| 184 |
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*cp = '\0';
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| 185 |
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}
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| 186 |
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| 187 |
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| 188 |
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int
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| 189 |
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i_comment( /* transfer comment as is */
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| 190 |
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int ac,
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| 191 |
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char **av
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| 192 |
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)
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| 193 |
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{
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| 194 |
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fputs(tabs, stdout);
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| 195 |
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putchar('#'); /* Inventor comment character */
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| 196 |
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while (--ac > 0) {
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| 197 |
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putchar(' ');
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| 198 |
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fputs(*++av, stdout);
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| 199 |
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}
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| 200 |
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putchar('\n');
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| 201 |
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return(MG_OK);
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| 202 |
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}
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| 203 |
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| 204 |
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| 205 |
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int
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| 206 |
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i_object( /* group object name */
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| 207 |
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int ac,
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| 208 |
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char **av
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| 209 |
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)
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| 210 |
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{
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| 211 |
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static int objnest;
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| 212 |
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| 213 |
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flush_cache(); /* flush cached objects */
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| 214 |
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if (ac == 2) { /* start group */
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| 215 |
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printf("%sDEF %s Group {\n", tabs, to_id(av[1]));
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| 216 |
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indent(1);
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| 217 |
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objnest++;
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| 218 |
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return(MG_OK);
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| 219 |
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}
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| 220 |
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if (ac == 1) { /* end group */
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| 221 |
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if (--objnest < 0)
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| 222 |
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return(MG_ECNTXT);
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| 223 |
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indent(0);
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| 224 |
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fputs(tabs, stdout);
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| 225 |
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fputs("}\n", stdout);
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| 226 |
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return(MG_OK);
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| 227 |
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}
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| 228 |
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return(MG_EARGC);
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| 229 |
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}
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| 230 |
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| 231 |
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| 232 |
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int
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| 233 |
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i_xf( /* transform object(s) */
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| 234 |
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int ac,
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| 235 |
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char **av
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| 236 |
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)
|
| 237 |
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{
|
| 238 |
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static long xfid;
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| 239 |
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register XF_SPEC *spec;
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| 240 |
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| 241 |
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flush_cache(); /* flush cached objects */
|
| 242 |
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if (ac == 1) { /* end of transform */
|
| 243 |
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if ((spec = xf_context) == NULL)
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| 244 |
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return(MG_ECNTXT);
|
| 245 |
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indent(0); /* close original segment */
|
| 246 |
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printf("%s}\n", tabs);
|
| 247 |
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indent(0);
|
| 248 |
|
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printf("%s}\n", tabs);
|
| 249 |
|
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if (spec->xarr != NULL) { /* check for iteration */
|
| 250 |
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register struct xf_array *ap = spec->xarr;
|
| 251 |
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register int n;
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| 252 |
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|
| 253 |
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ap->aarg[ap->ndim-1].i = 1; /* iterate array */
|
| 254 |
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for ( ; ; ) {
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| 255 |
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n = ap->ndim-1;
|
| 256 |
|
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while (ap->aarg[n].i < ap->aarg[n].n) {
|
| 257 |
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sprintf(ap->aarg[n].arg, "%d",
|
| 258 |
|
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ap->aarg[n].i);
|
| 259 |
|
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printf("%sSeparator {\n", tabs);
|
| 260 |
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indent(1);
|
| 261 |
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(void)put_xform(spec);
|
| 262 |
|
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printf("%sUSE _xf%ld\n", tabs,
|
| 263 |
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spec->xid);
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| 264 |
|
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indent(0);
|
| 265 |
|
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printf("%s}\n", tabs);
|
| 266 |
|
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++ap->aarg[n].i;
|
| 267 |
|
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}
|
| 268 |
|
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ap->aarg[n].i = 0;
|
| 269 |
|
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(void)strcpy(ap->aarg[n].arg, "0");
|
| 270 |
|
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while (n-- && ++ap->aarg[n].i >= ap->aarg[n].n) {
|
| 271 |
|
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ap->aarg[n].i = 0;
|
| 272 |
|
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(void)strcpy(ap->aarg[n].arg, "0");
|
| 273 |
|
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}
|
| 274 |
|
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if (n < 0)
|
| 275 |
|
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break;
|
| 276 |
|
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sprintf(ap->aarg[n].arg, "%d", ap->aarg[n].i);
|
| 277 |
|
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}
|
| 278 |
|
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}
|
| 279 |
|
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/* pop transform */
|
| 280 |
|
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xf_context = spec->prev;
|
| 281 |
|
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free_xf(spec);
|
| 282 |
|
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return(MG_OK);
|
| 283 |
|
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}
|
| 284 |
|
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/* else allocate new transform */
|
| 285 |
|
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if ((spec = new_xf(ac-1, av+1)) == NULL)
|
| 286 |
|
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return(MG_EMEM);
|
| 287 |
|
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spec->xid = ++xfid; /* assign unique ID */
|
| 288 |
|
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spec->prev = xf_context; /* push onto stack */
|
| 289 |
|
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xf_context = spec;
|
| 290 |
|
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/* translate xf specification */
|
| 291 |
|
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printf("%sSeparator {\n", tabs);
|
| 292 |
|
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indent(1);
|
| 293 |
|
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if (put_xform(spec) < 0)
|
| 294 |
|
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return(MG_ETYPE);
|
| 295 |
|
|
printf("%sDEF _xf%ld Group {\n", tabs, spec->xid); /* begin */
|
| 296 |
|
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indent(1);
|
| 297 |
|
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return(MG_OK);
|
| 298 |
|
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}
|
| 299 |
|
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|
| 300 |
|
|
|
| 301 |
|
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int
|
| 302 |
|
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put_xform( /* translate and print transform */
|
| 303 |
|
|
register XF_SPEC *spec
|
| 304 |
|
|
)
|
| 305 |
|
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{
|
| 306 |
|
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register char **av;
|
| 307 |
|
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register int n;
|
| 308 |
|
|
|
| 309 |
|
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n = xf_ac(spec) - xf_ac(spec->prev);
|
| 310 |
|
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if (xf(&spec->xf, n, av=xf_av(spec)) != n)
|
| 311 |
|
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return(-1);
|
| 312 |
|
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printf("%sMatrixTransform {\n", tabs);
|
| 313 |
|
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indent(1);
|
| 314 |
|
|
printf("%s# xf", tabs); /* put out original as comment */
|
| 315 |
|
|
while (n--) {
|
| 316 |
|
|
putchar(' ');
|
| 317 |
|
|
fputs(*av++, stdout);
|
| 318 |
|
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}
|
| 319 |
|
|
putchar('\n'); /* put out computed matrix */
|
| 320 |
|
|
printf("%smatrix %13.9g %13.9g %13.9g %13.9g\n", tabs,
|
| 321 |
|
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spec->xf.xfm[0][0], spec->xf.xfm[0][1],
|
| 322 |
|
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spec->xf.xfm[0][2], spec->xf.xfm[0][3]);
|
| 323 |
|
|
for (n = 1; n < 4; n++)
|
| 324 |
|
|
printf("%s %13.9g %13.9g %13.9g %13.9g\n", tabs,
|
| 325 |
|
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spec->xf.xfm[n][0], spec->xf.xfm[n][1],
|
| 326 |
|
|
spec->xf.xfm[n][2], spec->xf.xfm[n][3]);
|
| 327 |
|
|
indent(0);
|
| 328 |
|
|
printf("%s}\n", tabs);
|
| 329 |
|
|
return(0);
|
| 330 |
|
|
}
|
| 331 |
|
|
|
| 332 |
|
|
|
| 333 |
|
|
int
|
| 334 |
|
|
put_material(void) /* put out current material */
|
| 335 |
|
|
{
|
| 336 |
|
|
char *mname = curmatname;
|
| 337 |
|
|
float rgbval[3];
|
| 338 |
|
|
|
| 339 |
|
|
if (!c_cmaterial->clock) { /* current, just use it */
|
| 340 |
|
|
printf("%sUSE %s\n", tabs, mname);
|
| 341 |
|
|
return(0);
|
| 342 |
|
|
}
|
| 343 |
|
|
/* else update definition */
|
| 344 |
|
|
printf("%sDEF %s Group {\n", tabs, mname);
|
| 345 |
|
|
indent(1);
|
| 346 |
|
|
printf("%sMaterial {\n", tabs);
|
| 347 |
|
|
indent(1);
|
| 348 |
|
|
ccy2rgb(&c_cmaterial->rd_c, c_cmaterial->rd, rgbval);
|
| 349 |
|
|
printf("%sambientColor %.4f %.4f %.4f\n", tabs,
|
| 350 |
|
|
rgbval[0], rgbval[1], rgbval[2]);
|
| 351 |
|
|
printf("%sdiffuseColor %.4f %.4f %.4f\n", tabs,
|
| 352 |
|
|
rgbval[0], rgbval[1], rgbval[2]);
|
| 353 |
|
|
if (c_cmaterial->rs > FTINY) {
|
| 354 |
|
|
ccy2rgb(&c_cmaterial->rs_c, c_cmaterial->rs, rgbval);
|
| 355 |
|
|
printf("%sspecularColor %.4f %.4f %.4f\n", tabs,
|
| 356 |
|
|
rgbval[0], rgbval[1], rgbval[2]);
|
| 357 |
|
|
printf("%sshininess %.3f\n", tabs, 1.-sqrt(c_cmaterial->rs_a));
|
| 358 |
|
|
}
|
| 359 |
|
|
if (c_cmaterial->ed > FTINY) {
|
| 360 |
|
|
ccy2rgb(&c_cmaterial->ed_c, 1.0, rgbval);
|
| 361 |
|
|
printf("%semissiveColor %.4f %.4f %.4f\n", tabs,
|
| 362 |
|
|
rgbval[0], rgbval[1], rgbval[2]);
|
| 363 |
|
|
}
|
| 364 |
|
|
if (c_cmaterial->ts > FTINY)
|
| 365 |
|
|
printf("%stransparency %.4f\n", tabs,
|
| 366 |
|
|
c_cmaterial->ts + c_cmaterial->td);
|
| 367 |
|
|
indent(0);
|
| 368 |
|
|
printf("%s}\n", tabs);
|
| 369 |
|
|
if (outtype != O_INV1)
|
| 370 |
|
|
printf("%sShapeHints { shapeType %s faceType UNKNOWN_FACE_TYPE }\n",
|
| 371 |
|
|
tabs,
|
| 372 |
|
|
c_cmaterial->sided ? "SOLID" : "UNKNOWN_SHAPE_TYPE");
|
| 373 |
|
|
indent(0);
|
| 374 |
|
|
printf("%s}\n", tabs);
|
| 375 |
|
|
c_cmaterial->clock = 0;
|
| 376 |
|
|
return(0);
|
| 377 |
|
|
}
|
| 378 |
|
|
|
| 379 |
|
|
|
| 380 |
|
|
int
|
| 381 |
|
|
i_face( /* translate an N-sided face */
|
| 382 |
|
|
int ac,
|
| 383 |
|
|
char **av
|
| 384 |
|
|
)
|
| 385 |
|
|
{
|
| 386 |
|
|
static char lastmat[MAXID];
|
| 387 |
|
|
struct face *newf;
|
| 388 |
|
|
register C_VERTEX *vp;
|
| 389 |
|
|
register LUENT *lp;
|
| 390 |
|
|
register int i;
|
| 391 |
|
|
|
| 392 |
|
|
if (ac < 4)
|
| 393 |
|
|
return(MG_EARGC);
|
| 394 |
|
|
if ( strcmp(lastmat, curmatname) || c_cmaterial->clock ||
|
| 395 |
|
|
nverts == 0 || nverts+ac-1 >= MAXVERT) {
|
| 396 |
|
|
flush_cache(); /* new cache */
|
| 397 |
|
|
lu_init(&vert_tab, MAXVERT);
|
| 398 |
|
|
printf("%sSeparator {\n", tabs);
|
| 399 |
|
|
indent(1);
|
| 400 |
|
|
if (put_material() < 0) /* put out material */
|
| 401 |
|
|
return(MG_EBADMAT);
|
| 402 |
|
|
(void)strcpy(lastmat, curmatname);
|
| 403 |
|
|
}
|
| 404 |
|
|
/* allocate new face */
|
| 405 |
|
|
if ((newf = newface(ac-1)) == NULL)
|
| 406 |
|
|
return(MG_EMEM);
|
| 407 |
|
|
newf->nv = ac-1;
|
| 408 |
|
|
/* get vertex references */
|
| 409 |
|
|
for (i = 0; i < newf->nv; i++) {
|
| 410 |
|
|
if ((vp = c_getvert(av[i+1])) == NULL)
|
| 411 |
|
|
return(MG_EUNDEF);
|
| 412 |
|
|
setvkey(vlist[nverts], vp);
|
| 413 |
|
|
lp = lu_find(&vert_tab, vlist[nverts]);
|
| 414 |
|
|
if (lp == NULL)
|
| 415 |
|
|
return(MG_EMEM);
|
| 416 |
|
|
if (lp->key == NULL)
|
| 417 |
|
|
lp->key = (char *)vlist[nverts++];
|
| 418 |
|
|
newf->vl[i] = ((char (*)[VFLEN])lp->key - vlist);
|
| 419 |
|
|
}
|
| 420 |
|
|
/* add to face list */
|
| 421 |
|
|
newf->next = NULL;
|
| 422 |
|
|
if (flist == NULL)
|
| 423 |
|
|
flist = newf;
|
| 424 |
|
|
else
|
| 425 |
|
|
flast->next = newf;
|
| 426 |
|
|
flast = newf;
|
| 427 |
|
|
return(MG_OK); /* we'll actually put it out later */
|
| 428 |
|
|
}
|
| 429 |
|
|
|
| 430 |
|
|
|
| 431 |
|
|
int
|
| 432 |
|
|
i_sph( /* translate sphere description */
|
| 433 |
|
|
int ac,
|
| 434 |
|
|
char **av
|
| 435 |
|
|
)
|
| 436 |
|
|
{
|
| 437 |
|
|
register C_VERTEX *cent;
|
| 438 |
|
|
|
| 439 |
|
|
if (ac != 3)
|
| 440 |
|
|
return(MG_EARGC);
|
| 441 |
|
|
flush_cache(); /* flush vertex cache */
|
| 442 |
|
|
printf("%sSeparator {\n", tabs);
|
| 443 |
|
|
indent(1);
|
| 444 |
|
|
/* put out current material */
|
| 445 |
|
|
if (put_material() < 0)
|
| 446 |
|
|
return(MG_EBADMAT);
|
| 447 |
|
|
/* get center */
|
| 448 |
|
|
if ((cent = c_getvert(av[1])) == NULL)
|
| 449 |
|
|
return(MG_EUNDEF);
|
| 450 |
|
|
/* get radius */
|
| 451 |
|
|
if (!isflt(av[2]))
|
| 452 |
|
|
return(MG_ETYPE);
|
| 453 |
|
|
printf("%sTranslation { translation %13.9g %13.9g %13.9g }\n", tabs,
|
| 454 |
|
|
cent->p[0], cent->p[1], cent->p[2]);
|
| 455 |
|
|
printf("%sSphere { radius %s }\n", tabs, av[2]);
|
| 456 |
|
|
indent(0);
|
| 457 |
|
|
printf("%s}\n", tabs);
|
| 458 |
|
|
return(MG_OK);
|
| 459 |
|
|
}
|
| 460 |
|
|
|
| 461 |
|
|
|
| 462 |
|
|
int
|
| 463 |
|
|
i_cyl( /* translate a cylinder description */
|
| 464 |
|
|
int ac,
|
| 465 |
|
|
char **av
|
| 466 |
|
|
)
|
| 467 |
|
|
{
|
| 468 |
|
|
register C_VERTEX *v1, *v2;
|
| 469 |
|
|
FVECT va;
|
| 470 |
|
|
double length, angle;
|
| 471 |
|
|
|
| 472 |
|
|
if (ac != 4)
|
| 473 |
|
|
return(MG_EARGC);
|
| 474 |
|
|
flush_cache(); /* flush vertex cache */
|
| 475 |
|
|
printf("%sSeparator {\n", tabs);
|
| 476 |
|
|
indent(1);
|
| 477 |
|
|
/* put out current material */
|
| 478 |
|
|
if (put_material() < 0)
|
| 479 |
|
|
return(MG_EBADMAT);
|
| 480 |
|
|
/* get endpoints */
|
| 481 |
|
|
if (((v1 = c_getvert(av[1])) == NULL) | ((v2 = c_getvert(av[3])) == NULL))
|
| 482 |
|
|
return(MG_EUNDEF);
|
| 483 |
|
|
/* get radius */
|
| 484 |
|
|
if (!isflt(av[2]))
|
| 485 |
|
|
return(MG_ETYPE);
|
| 486 |
|
|
/* compute transform */
|
| 487 |
|
|
va[0] = v2->p[0] - v1->p[0];
|
| 488 |
|
|
va[1] = v2->p[1] - v1->p[1];
|
| 489 |
|
|
va[2] = v2->p[2] - v1->p[2];
|
| 490 |
|
|
length = sqrt(DOT(va,va));
|
| 491 |
|
|
if (va[1] >= length)
|
| 492 |
|
|
angle = 0.;
|
| 493 |
|
|
else if (va[1] <= -length)
|
| 494 |
|
|
angle = PI;
|
| 495 |
|
|
else
|
| 496 |
|
|
angle = acos(va[1]/length);
|
| 497 |
|
|
printf("%sTranslation { translation %13.9g %13.9g %13.9g }\n", tabs,
|
| 498 |
|
|
.5*(v1->p[0]+v2->p[0]), .5*(v1->p[1]+v2->p[1]),
|
| 499 |
|
|
.5*(v1->p[2]+v2->p[2]));
|
| 500 |
|
|
printf("%sRotation { rotation %.9g %.9g %.9g %.9g }\n", tabs,
|
| 501 |
|
|
va[2], 0., -va[0], angle);
|
| 502 |
|
|
/* open-ended */
|
| 503 |
|
|
printf("%sCylinder { parts SIDES height %13.9g radius %s }\n", tabs,
|
| 504 |
|
|
length, av[2]);
|
| 505 |
|
|
indent(0);
|
| 506 |
|
|
printf("%s}\n", tabs);
|
| 507 |
|
|
return(MG_OK);
|
| 508 |
|
|
}
|
| 509 |
|
|
|
| 510 |
|
|
|
| 511 |
|
|
char *
|
| 512 |
|
|
to_id( /* make sure a name is a valid Inventor ID */
|
| 513 |
|
|
register char *name
|
| 514 |
|
|
)
|
| 515 |
|
|
{
|
| 516 |
|
|
static char id[MAXID];
|
| 517 |
|
|
register char *cp;
|
| 518 |
|
|
|
| 519 |
|
|
for (cp = id; *name && cp < MAXID-1+id; name++)
|
| 520 |
|
|
if (isalnum(*name) || *name == '_')
|
| 521 |
|
|
*cp++ = *name;
|
| 522 |
|
|
else
|
| 523 |
|
|
*cp++ = '_';
|
| 524 |
|
|
*cp = '\0';
|
| 525 |
|
|
return(id);
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
|
| 529 |
|
|
void
|
| 530 |
|
|
flush_cache(void) /* put out cached faces */
|
| 531 |
|
|
{
|
| 532 |
|
|
int donorms = 0;
|
| 533 |
|
|
register struct face *f;
|
| 534 |
|
|
register int i;
|
| 535 |
|
|
|
| 536 |
|
|
if (nverts == 0)
|
| 537 |
|
|
return;
|
| 538 |
|
|
/* put out coordinates */
|
| 539 |
|
|
printf("%sCoordinate3 {\n", tabs);
|
| 540 |
|
|
indent(1);
|
| 541 |
|
|
vlist[0][VFSEPPOS] = '\0';
|
| 542 |
|
|
printf("%spoint [ %s", tabs, vlist[0]);
|
| 543 |
|
|
for (i = 1; i < nverts; i++) {
|
| 544 |
|
|
vlist[i][VFSEPPOS] = '\0';
|
| 545 |
|
|
printf(",\n%s %s", tabs, vlist[i]);
|
| 546 |
|
|
if (strcmp(VFSEPPOS+1+vlist[i], VZVECT))
|
| 547 |
|
|
donorms++;
|
| 548 |
|
|
}
|
| 549 |
|
|
indent(0);
|
| 550 |
|
|
printf(" ]\n%s}\n", tabs);
|
| 551 |
|
|
if (donorms) { /* put out normals */
|
| 552 |
|
|
printf("%sNormal {\n", tabs);
|
| 553 |
|
|
indent(1);
|
| 554 |
|
|
printf("%svector [ %s", tabs, VFSEPPOS+1+vlist[0]);
|
| 555 |
|
|
for (i = 1; i < nverts; i++)
|
| 556 |
|
|
printf(",\n%s %s", tabs, VFSEPPOS+1+vlist[i]);
|
| 557 |
|
|
indent(0);
|
| 558 |
|
|
printf(" ]\n%s}\n", tabs);
|
| 559 |
|
|
}
|
| 560 |
|
|
/* put out faces */
|
| 561 |
|
|
printf("%sIndexedFaceSet {\n", tabs);
|
| 562 |
|
|
indent(1);
|
| 563 |
|
|
f = flist; /* coordinate indices */
|
| 564 |
|
|
printf("%scoordIndex [ %d", tabs, f->vl[0]);
|
| 565 |
|
|
for (i = 1; i < f->nv; i++)
|
| 566 |
|
|
printf(", %d", f->vl[i]);
|
| 567 |
|
|
for (f = f->next; f != NULL; f = f->next) {
|
| 568 |
|
|
printf(", -1,\n%s %d", tabs, f->vl[0]);
|
| 569 |
|
|
for (i = 1; i < f->nv; i++)
|
| 570 |
|
|
printf(", %d", f->vl[i]);
|
| 571 |
|
|
}
|
| 572 |
|
|
printf(" ]\n");
|
| 573 |
|
|
if (donorms) {
|
| 574 |
|
|
f = flist; /* normal indices */
|
| 575 |
|
|
printf("%snormalIndex [ %d", tabs, f->vl[0]);
|
| 576 |
|
|
for (i = 1; i < f->nv; i++)
|
| 577 |
|
|
printf(", %d", f->vl[i]);
|
| 578 |
|
|
for (f = f->next; f != NULL; f = f->next) {
|
| 579 |
|
|
printf(", -1,\n%s %d", tabs, f->vl[0]);
|
| 580 |
|
|
for (i = 1; i < f->nv; i++)
|
| 581 |
|
|
printf(", %d", f->vl[i]);
|
| 582 |
|
|
}
|
| 583 |
|
|
printf(" ]\n");
|
| 584 |
|
|
}
|
| 585 |
|
|
indent(0); /* close IndexedFaceSet */
|
| 586 |
|
|
printf("%s}\n", tabs);
|
| 587 |
|
|
indent(0); /* close face group */
|
| 588 |
|
|
printf("%s}\n", tabs);
|
| 589 |
|
|
while ((f = flist) != NULL) { /* free face list */
|
| 590 |
|
|
flist = f->next;
|
| 591 |
|
|
freeface(f);
|
| 592 |
|
|
}
|
| 593 |
|
|
lu_done(&vert_tab); /* clear lookup table */
|
| 594 |
|
|
nverts = 0;
|
| 595 |
|
|
}
|
