| 231 |
|
FVECT ip, |
| 232 |
|
VIEW *v, |
| 233 |
|
FVECT p |
| 234 |
< |
) |
| 234 |
> |
) /* Use VL_* flags to interpret return value */ |
| 235 |
|
{ |
| 236 |
+ |
int rflags = VL_GOOD; |
| 237 |
|
double d, d2; |
| 238 |
|
FVECT disp; |
| 239 |
|
|
| 245 |
|
break; |
| 246 |
|
case VT_PER: /* perspective view */ |
| 247 |
|
d = DOT(disp,v->vdir); |
| 248 |
+ |
if ((v->vaft > FTINY) & (d >= v->vaft)) |
| 249 |
+ |
rflags |= VL_BEYOND; |
| 250 |
|
ip[2] = VLEN(disp); |
| 251 |
|
if (d < -FTINY) { /* fold pyramid */ |
| 252 |
|
ip[2] = -ip[2]; |
| 253 |
|
d = -d; |
| 254 |
|
} else if (d <= FTINY) |
| 255 |
< |
return(0); /* at infinite edge */ |
| 255 |
> |
return(VL_BAD); /* at infinite edge */ |
| 256 |
|
d = 1.0/d; |
| 257 |
|
disp[0] *= d; |
| 258 |
|
disp[1] *= d; |
| 274 |
|
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
| 275 |
|
d = d*d + d2*d2; |
| 276 |
|
if (d <= FTINY*FTINY) |
| 277 |
< |
return(0); /* at pole */ |
| 277 |
> |
return(VL_BAD); /* at pole */ |
| 278 |
> |
if ((v->vaft > FTINY) & (d >= v->vaft*v->vaft)) |
| 279 |
> |
rflags |= VL_BEYOND; |
| 280 |
|
d = 1.0/sqrt(d); |
| 281 |
|
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
| 282 |
|
ip[2] = VLEN(disp); |
| 305 |
|
if (d >= 1.0-FTINY) |
| 306 |
|
goto gotall; |
| 307 |
|
if (d <= -(1.0-FTINY)) |
| 308 |
< |
return(0); |
| 308 |
> |
return(VL_BAD); |
| 309 |
|
ip[0] += DOT(disp,v->hvec)/((1. + d)*sqrt(v->hn2)); |
| 310 |
|
ip[1] += DOT(disp,v->vvec)/((1. + d)*sqrt(v->vn2)); |
| 311 |
|
goto gotall; |
| 312 |
+ |
default: |
| 313 |
+ |
return(VL_BAD); |
| 314 |
|
} |
| 315 |
|
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
| 316 |
|
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
| 317 |
< |
gotall: /* return -1 if behind */ |
| 318 |
< |
return(1 - 2*(ip[2] <= 0.0)); |
| 317 |
> |
gotall: /* add appropriate return flags */ |
| 318 |
> |
if (ip[2] <= 0.0) |
| 319 |
> |
rflags |= VL_BEHIND; |
| 320 |
> |
else if ((v->type != VT_PER) & (v->type != VT_CYL)) |
| 321 |
> |
rflags |= VL_BEYOND*((v->vaft > FTINY) & |
| 322 |
> |
(ip[2] >= v->vaft - v->vfore)); |
| 323 |
> |
rflags |= VL_OUTSIDE*((0.0 >= ip[0]) | (ip[0] >= 1.0) | |
| 324 |
> |
(0.0 >= ip[1]) | (ip[1] >= 1.0)); |
| 325 |
> |
return(rflags); |
| 326 |
|
} |
| 327 |
|
|
| 328 |
|
|
| 386 |
|
char *av[] |
| 387 |
|
) |
| 388 |
|
{ |
| 389 |
< |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
| 389 |
> |
#define check(c,l) if ((av[0][c]&&!isspace(av[0][c])) || \ |
| 390 |
|
badarg(ac-1,av+1,l)) return(-1) |
| 391 |
|
|
| 392 |
|
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
| 393 |
|
return(-1); |
| 394 |
|
switch (av[0][2]) { |
| 395 |
|
case 't': /* type */ |
| 396 |
< |
if (!av[0][3] || av[0][3]==' ') |
| 396 |
> |
if (!av[0][3] || isspace(av[0][3])) |
| 397 |
|
return(-1); |
| 398 |
|
check(4,""); |
| 399 |
|
v->type = av[0][3]; |
| 578 |
|
} |
| 579 |
|
/* skip leading path */ |
| 580 |
|
cp = s; |
| 581 |
< |
while (*cp && *cp != ' ') |
| 581 |
> |
while (*cp && !isspace(*cp)) |
| 582 |
|
cp++; |
| 583 |
|
while (cp > s && !ISDIRSEP(cp[-1])) |
| 584 |
|
cp--; |
| 630 |
|
if (rp != NULL && !fgetsresolu(rp, fp)) |
| 631 |
|
mvs.ok = 0; |
| 632 |
|
|
| 633 |
< |
fclose(fp); |
| 633 |
> |
if (fp != stdin) |
| 634 |
> |
fclose(fp); |
| 635 |
|
|
| 636 |
|
return(mvs.ok); |
| 637 |
|
} |
