| 1 |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ SGI"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* Create a closed environment from a holodeck section |
| 9 |
*/ |
| 10 |
|
| 11 |
#include "holo.h" |
| 12 |
|
| 13 |
#define ourhp (hdlist[0]) |
| 14 |
|
| 15 |
char *progname; /* global argv[0] */ |
| 16 |
char *prefix; /* file name prefix */ |
| 17 |
|
| 18 |
HDBEAMI *gabmi; /* beam index array */ |
| 19 |
|
| 20 |
|
| 21 |
main(argc, argv) |
| 22 |
int argc; |
| 23 |
char *argv[]; |
| 24 |
{ |
| 25 |
int sect; |
| 26 |
register int n; |
| 27 |
|
| 28 |
progname = argv[0]; |
| 29 |
if (argc < 3 | argc > 4) |
| 30 |
goto userr; |
| 31 |
prefix = argv[1]; |
| 32 |
sect = argc==3 ? 0 : atoi(argv[3]); |
| 33 |
openholo(argv[2], sect); |
| 34 |
mkcalfile(argv[2], sect); |
| 35 |
n = ourhp->grid[0] * ourhp->grid[1]; |
| 36 |
if (ourhp->grid[0] * ourhp->grid[2] > n) |
| 37 |
n = ourhp->grid[0] * ourhp->grid[2]; |
| 38 |
if (ourhp->grid[1] * ourhp->grid[2] > n) |
| 39 |
n = ourhp->grid[1] * ourhp->grid[2]; |
| 40 |
gabmi = (HDBEAMI *)malloc(n*sizeof(HDBEAMI)); |
| 41 |
if (gabmi == NULL) |
| 42 |
error(SYSTEM, "out of memory in main"); |
| 43 |
while (n--) |
| 44 |
gabmi[n].h = ourhp; |
| 45 |
hdcachesize = 0; |
| 46 |
for (n = 0; n < 6; n++) |
| 47 |
mkwall(argv[2], sect, n); |
| 48 |
quit(0); |
| 49 |
userr: |
| 50 |
fprintf(stderr, "Usage: %s prefix input.hdk [section]\n", progname); |
| 51 |
exit(1); |
| 52 |
} |
| 53 |
|
| 54 |
|
| 55 |
openholo(fname, sect) /* open holodeck section for input */ |
| 56 |
char *fname; |
| 57 |
int sect; |
| 58 |
{ |
| 59 |
extern long ftell(); |
| 60 |
FILE *fp; |
| 61 |
int fd; |
| 62 |
int4 nextloc; |
| 63 |
int n; |
| 64 |
/* open holodeck file */ |
| 65 |
if ((fp = fopen(fname, "r")) == NULL) { |
| 66 |
sprintf(errmsg, "cannot open \"%s\"", fname); |
| 67 |
error(SYSTEM, errmsg); |
| 68 |
} |
| 69 |
/* check header and magic number */ |
| 70 |
if (checkheader(fp, HOLOFMT, NULL) < 0 || getw(fp) != HOLOMAGIC) { |
| 71 |
sprintf(errmsg, "file \"%s\" not in holodeck format", fname); |
| 72 |
error(USER, errmsg); |
| 73 |
} |
| 74 |
fd = dup(fileno(fp)); /* dup file handle */ |
| 75 |
nextloc = ftell(fp); /* get stdio position */ |
| 76 |
fclose(fp); /* done with stdio */ |
| 77 |
for (n = 0; nextloc > 0L; n++) { /* get the indicated section */ |
| 78 |
lseek(fd, (long)nextloc, 0); |
| 79 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
| 80 |
if (n == sect) { |
| 81 |
hdinit(fd, NULL); |
| 82 |
return; |
| 83 |
} |
| 84 |
} |
| 85 |
error(USER, "holodeck section not found"); |
| 86 |
} |
| 87 |
|
| 88 |
|
| 89 |
mkwall(hdk, sect, wn) /* make map for indicated wall */ |
| 90 |
char *hdk; |
| 91 |
int sect; |
| 92 |
int wn; |
| 93 |
{ |
| 94 |
static char cname[3][6] = {"Red", "Green", "Blue"}; |
| 95 |
char fnbuf[128]; |
| 96 |
FILE *cdat[3]; |
| 97 |
int st = 0; |
| 98 |
int wo, i, j; |
| 99 |
/* loop through each opposing wall */ |
| 100 |
for (wo = 0; wo < 6; wo++) { |
| 101 |
if (wo == wn) continue; |
| 102 |
/* create data files */ |
| 103 |
sprintf(fnbuf, "%s_%dr%d.dat", prefix, wn, wo); |
| 104 |
if ((cdat[0] = fopen(fnbuf, "w")) == NULL) |
| 105 |
goto openerr; |
| 106 |
sprintf(fnbuf, "%s_%dg%d.dat", prefix, wn, wo); |
| 107 |
if ((cdat[1] = fopen(fnbuf, "w")) == NULL) |
| 108 |
goto openerr; |
| 109 |
sprintf(fnbuf, "%s_%db%d.dat", prefix, wn, wo); |
| 110 |
if ((cdat[2] = fopen(fnbuf, "w")) == NULL) |
| 111 |
goto openerr; |
| 112 |
/* write dimensions */ |
| 113 |
for (i = 0; i < 3; i++) { |
| 114 |
fprintf(cdat[i], |
| 115 |
"# %s channel for wall %d -> wall %d of section %d in holodeck \"%s\"\n", |
| 116 |
cname[i], wo, wn, sect, hdk); |
| 117 |
fprintf(cdat[i], |
| 118 |
"4\n0.5 %.1f %d\n0.5 %.1f %d\n0.5 %.1f %d\n0.5 %.1f %d\n", |
| 119 |
ourhp->grid[hdwg0[wn]]-.5, ourhp->grid[hdwg0[wn]], |
| 120 |
ourhp->grid[hdwg1[wn]]-.5, ourhp->grid[hdwg1[wn]], |
| 121 |
ourhp->grid[hdwg0[wo]]-.5, ourhp->grid[hdwg0[wo]], |
| 122 |
ourhp->grid[hdwg1[wo]]-.5, ourhp->grid[hdwg1[wo]]); |
| 123 |
} |
| 124 |
/* run each grid cell */ |
| 125 |
for (i = 0; i < ourhp->grid[hdwg0[wn]]; i++) |
| 126 |
for (j = 0; j < ourhp->grid[hdwg1[wn]]; j++) |
| 127 |
dogrid(wn, i, j, wo, cdat); |
| 128 |
/* close files */ |
| 129 |
if (fclose(cdat[0]) == EOF | fclose(cdat[1]) == EOF | |
| 130 |
fclose(cdat[2]) == EOF) |
| 131 |
error(SYSTEM, "write error in mkwall"); |
| 132 |
/* put out pattern */ |
| 133 |
printf("\n%s colordata wallmap\n", st++ ? "wallmap" : "void"); |
| 134 |
printf("11 f f f %s_%dr%d.dat %s_%dg%d.dat %s_%db%d.dat\n", |
| 135 |
prefix,wn,wo, prefix,wn,wo, prefix,wn,wo); |
| 136 |
printf("\t%s.cal nu nv ou ov\n0\n2 %d %d\n", prefix, wn, wo); |
| 137 |
} |
| 138 |
/* put out polygon */ |
| 139 |
printf("\nwallmap glow wallglow\n0\n0\n4 1 1 1 0\n"); |
| 140 |
printf("\nwallglow polygon wall%d\n0\n0\n12\n", wn); |
| 141 |
wallverts(wn); |
| 142 |
return; |
| 143 |
openerr: |
| 144 |
sprintf(errmsg, "cannot open \"%d\" for writing", fnbuf); |
| 145 |
error(SYSTEM, errmsg); |
| 146 |
} |
| 147 |
|
| 148 |
|
| 149 |
wallverts(wn) /* print out vertices for wall wn */ |
| 150 |
int wn; |
| 151 |
{ |
| 152 |
int rev, i0, i1; |
| 153 |
FVECT corn, vt; |
| 154 |
|
| 155 |
if ((rev = wn & 1)) |
| 156 |
VSUM(corn, ourhp->orig, ourhp->xv[wn>>1], 1.); |
| 157 |
else |
| 158 |
VCOPY(corn, ourhp->orig); |
| 159 |
fcross(vt, ourhp->xv[i0=hdwg0[wn]], ourhp->xv[i1=hdwg1[wn]]); |
| 160 |
if (DOT(vt, ourhp->wg[wn>>1]) < 0.) |
| 161 |
rev ^= 1; |
| 162 |
if (rev) { |
| 163 |
i0 = hdwg1[wn]; i1 = hdwg0[wn]; |
| 164 |
} |
| 165 |
printf("\t%.10e %.10e %.10e\n", corn[0], corn[1], corn[2]); |
| 166 |
printf("\t%.10e %.10e %.10e\n", corn[0] + ourhp->xv[i0][0], |
| 167 |
corn[1] + ourhp->xv[i0][1], corn[2] + ourhp->xv[i0][2]); |
| 168 |
printf("\t%.10e %.10e %.10e\n", |
| 169 |
corn[0] + ourhp->xv[i0][0] + ourhp->xv[i1][0], |
| 170 |
corn[1] + ourhp->xv[i0][1] + ourhp->xv[i1][1], |
| 171 |
corn[2] + ourhp->xv[i0][2] + ourhp->xv[i1][2]); |
| 172 |
printf("\t%.10e %.10e %.10e\n", corn[0] + ourhp->xv[i1][0], |
| 173 |
corn[1] + ourhp->xv[i1][1], corn[2] + ourhp->xv[i1][2]); |
| 174 |
} |
| 175 |
|
| 176 |
|
| 177 |
dogrid(wn, ci, cj, wo, dfp) /* compute and write grid cell data */ |
| 178 |
int wn, ci, cj, wo; |
| 179 |
FILE *dfp[3]; |
| 180 |
{ |
| 181 |
GCOORD gc[2]; |
| 182 |
COLOR cavg; |
| 183 |
register int n; |
| 184 |
|
| 185 |
gc[1].w = wn; gc[1].i[0] = ci; gc[1].i[1] = cj; |
| 186 |
gc[0].w = wo; |
| 187 |
n = 0; /* load beams in optimal order */ |
| 188 |
for (gc[0].i[0] = ourhp->grid[hdwg0[gc[0].w]]; gc[0].i[0]--; ) |
| 189 |
for (gc[0].i[1] = ourhp->grid[hdwg1[gc[0].w]]; gc[0].i[1]--; ) |
| 190 |
gabmi[n++].b = hdbindex(ourhp, gc); |
| 191 |
hdloadbeams(gabmi, n, NULL); |
| 192 |
/* run beams in regular order */ |
| 193 |
fprintf(dfp[0], "\n# Begin grid cell (%d,%d)\n", ci, cj); |
| 194 |
fprintf(dfp[1], "\n# Begin grid cell (%d,%d)\n", ci, cj); |
| 195 |
fprintf(dfp[2], "\n# Begin grid cell (%d,%d)\n", ci, cj); |
| 196 |
for (gc[0].i[0] = 0; gc[0].i[0] < ourhp->grid[hdwg0[gc[0].w]]; |
| 197 |
gc[0].i[0]++) { |
| 198 |
for (gc[0].i[1] = 0; gc[0].i[1] < ourhp->grid[hdwg1[gc[0].w]]; |
| 199 |
gc[0].i[1]++) { |
| 200 |
avgbeam(cavg, gc); |
| 201 |
fprintf(dfp[0], " %.2e", colval(cavg,RED)); |
| 202 |
fprintf(dfp[1], " %.2e", colval(cavg,GRN)); |
| 203 |
fprintf(dfp[2], " %.2e", colval(cavg,BLU)); |
| 204 |
} |
| 205 |
fputc('\n', dfp[0]); |
| 206 |
fputc('\n', dfp[1]); |
| 207 |
fputc('\n', dfp[2]); |
| 208 |
} |
| 209 |
hdflush(NULL); /* flush cache */ |
| 210 |
} |
| 211 |
|
| 212 |
|
| 213 |
avgbeam(cavg, gc) /* compute average beam color */ |
| 214 |
COLOR cavg; |
| 215 |
GCOORD gc[2]; |
| 216 |
{ |
| 217 |
static COLOR crun = BLKCOLOR; |
| 218 |
static int ncrun = 0; |
| 219 |
register BEAM *bp; |
| 220 |
COLOR cray; |
| 221 |
unsigned beamlen; |
| 222 |
int ls[2][3]; |
| 223 |
FVECT gp[2], wp[2]; |
| 224 |
double d; |
| 225 |
int n; |
| 226 |
register int i; |
| 227 |
|
| 228 |
bp = hdgetbeam(ourhp, hdbindex(ourhp, gc)); |
| 229 |
if (bp == NULL || !bp->nrm) { /* use running average */ |
| 230 |
copycolor(cavg, crun); |
| 231 |
if (ncrun > 1) { |
| 232 |
d = 1./ncrun; |
| 233 |
scalecolor(cavg, d); |
| 234 |
} |
| 235 |
} else { /* use beam average */ |
| 236 |
hdlseg(ls, ourhp, gc); /* get beam length */ |
| 237 |
for (i = 3; i--; ) { |
| 238 |
gp[0][i] = ls[0][i] + .5; |
| 239 |
gp[1][i] = ls[1][i] + .5; |
| 240 |
} |
| 241 |
hdworld(wp[0], ourhp, gp[0]); |
| 242 |
hdworld(wp[1], ourhp, gp[1]); |
| 243 |
d = sqrt(dist2(wp[0], wp[1])); |
| 244 |
beamlen = hdcode(ourhp, d); |
| 245 |
setcolor(cavg, 0., 0., 0.); |
| 246 |
n = 0; |
| 247 |
for (i = bp->nrm; i--; ) { |
| 248 |
if (hdbray(bp)[i].d < beamlen) |
| 249 |
continue; /* inside section */ |
| 250 |
colr_color(cray, hdbray(bp)[i].v); |
| 251 |
addcolor(cavg, cray); |
| 252 |
n++; |
| 253 |
} |
| 254 |
if (n > 1) { |
| 255 |
d = 1./n; |
| 256 |
scalecolor(cavg, d); |
| 257 |
} |
| 258 |
if (n) { |
| 259 |
addcolor(crun, cavg); |
| 260 |
ncrun++; |
| 261 |
} |
| 262 |
} |
| 263 |
} |
| 264 |
|
| 265 |
|
| 266 |
mkcalfile(hdk, sect) /* create .cal file */ |
| 267 |
char *hdk; |
| 268 |
int sect; |
| 269 |
{ |
| 270 |
char fname[128]; |
| 271 |
FILE *fp; |
| 272 |
register int i; |
| 273 |
|
| 274 |
sprintf(fname, "%s.cal", prefix); |
| 275 |
if ((fp = fopen(fname, "w")) == NULL) { |
| 276 |
sprintf(errmsg, "cannot open \"%s\" for writing", fname); |
| 277 |
error(SYSTEM, errmsg); |
| 278 |
} |
| 279 |
fprintf(fp, |
| 280 |
"{\n\tCoordinate calculation for section %d of holodeck \"%s\"\n}\n", |
| 281 |
sect, hdk); |
| 282 |
|
| 283 |
fprintf(fp, "\n{ Constants }\n"); |
| 284 |
fprintf(fp, "hox : %.7e; hoy : %.7e; hoz : %.7e;\n", |
| 285 |
ourhp->orig[0], ourhp->orig[1], ourhp->orig[2]); |
| 286 |
fprintf(fp, "grid(i) : select(i+1, %d, %d, %d);\n", |
| 287 |
ourhp->grid[0], ourhp->grid[1], ourhp->grid[2]); |
| 288 |
fprintf(fp, "hwgx(i) : select(i+1, %.7e, %.7e, %.7e);\n", |
| 289 |
ourhp->wg[0][0], ourhp->wg[1][0], ourhp->wg[2][0]); |
| 290 |
fprintf(fp, "hwgy(i) : select(i+1, %.7e, %.7e, %.7e);\n", |
| 291 |
ourhp->wg[0][1], ourhp->wg[1][1], ourhp->wg[2][1]); |
| 292 |
fprintf(fp, "hwgz(i) : select(i+1, %.7e, %.7e, %.7e);\n", |
| 293 |
ourhp->wg[0][2], ourhp->wg[1][2], ourhp->wg[2][2]); |
| 294 |
fprintf(fp, "hwo(i) : select(i+1, %.7e, %.7e, %.7e,\n", |
| 295 |
ourhp->wo[0], ourhp->wo[1], ourhp->wo[2]); |
| 296 |
fprintf(fp, "\t\t%.7e, %.7e, %.7e);\n", |
| 297 |
ourhp->wo[3], ourhp->wo[4], ourhp->wo[5]); |
| 298 |
fprintf(fp, |
| 299 |
"wgp(i,x,y,z) : (x-hox)*hwgx(i) + (y-hoy)*hwgy(i) + (z-hoz)*hwgz(i);\n"); |
| 300 |
fprintf(fp, "wg0(w) : select(.5*w+.75, 1, 2, 0);\n"); |
| 301 |
fprintf(fp, "wg1(w) : select(.5*w+.75, 2, 0, 1);\n"); |
| 302 |
|
| 303 |
fprintf(fp, "\n{ Variables }\n"); |
| 304 |
fprintf(fp, "nw = arg(1); ow = arg(2);\n"); |
| 305 |
fprintf(fp, "oax = .5*ow-.25;\n"); |
| 306 |
fprintf(fp, "ng0 = wg0(nw); ng1 = wg1(nw);\n"); |
| 307 |
fprintf(fp, "og0 = wg0(ow); og1 = wg1(ow);\n"); |
| 308 |
fprintf(fp, |
| 309 |
"odenom = Dx*hwgx(oax) + Dy*hwgy(oax) + Dz*hwgz(oax);\n"); |
| 310 |
fprintf(fp, "odist = if(and(FTINY-odenom, FTINY+odenom), -1,\n"); |
| 311 |
fprintf(fp, |
| 312 |
"\t\t(Px*hwgx(oax) + Py*hwgy(oax) + Pz*hwgz(oax) - hwo(ow))/odenom);\n"); |
| 313 |
fprintf(fp, |
| 314 |
"opx = Px - odist*Dx; opy = Py - odist*Dy; opz = Pz - odist*Dz;\n"); |
| 315 |
fprintf(fp, "nu = wgp(ng0,Px,Py,Pz);\n"); |
| 316 |
fprintf(fp, "nv = wgp(ng1,Px,Py,Pz);\n"); |
| 317 |
fprintf(fp, "ou = wgp(og0,opx,opy,opz);\n"); |
| 318 |
fprintf(fp, "ov = wgp(og1,opx,opy,opz);\n"); |
| 319 |
fprintf(fp, "f(v) = if(and(and(ou-FTINY,grid(og0)-ou-FTINY),\n"); |
| 320 |
fprintf(fp, "\t\tand(ov-FTINY,grid(og1)-ov-FTINY)), if(v,v,0), 1);\n"); |
| 321 |
fclose(fp); |
| 322 |
} |
| 323 |
|
| 324 |
|
| 325 |
eputs(s) /* put error message to stderr */ |
| 326 |
register char *s; |
| 327 |
{ |
| 328 |
static int midline = 0; |
| 329 |
|
| 330 |
if (!*s) |
| 331 |
return; |
| 332 |
if (!midline++) { /* prepend line with program name */ |
| 333 |
fputs(progname, stderr); |
| 334 |
fputs(": ", stderr); |
| 335 |
} |
| 336 |
fputs(s, stderr); |
| 337 |
if (s[strlen(s)-1] == '\n') { |
| 338 |
fflush(stderr); |
| 339 |
midline = 0; |
| 340 |
} |
| 341 |
} |
