| 15 |
|
#include "paths.h" |
| 16 |
|
#include "view.h" |
| 17 |
|
|
| 18 |
– |
|
| 19 |
– |
#define FEQ(x,y) (fabs((x)-(y)) <= FTINY) |
| 20 |
– |
#define VEQ(v,w) (FEQ((v)[0],(w)[0]) && FEQ((v)[1],(w)[1]) \ |
| 21 |
– |
&& FEQ((v)[2],(w)[2])) |
| 22 |
– |
|
| 18 |
|
VIEW stdview = STDVIEW; /* default view parameters */ |
| 19 |
|
|
| 20 |
|
static gethfunc gethview; |
| 240 |
|
break; |
| 241 |
|
case VT_PER: /* perspective view */ |
| 242 |
|
d = DOT(disp,v->vdir); |
| 243 |
< |
if ((v->vaft > FTINY) & (d > v->vaft)) |
| 243 |
> |
if ((v->vaft > FTINY) & (d >= v->vaft)) |
| 244 |
|
rflags |= VL_BEYOND; |
| 245 |
|
ip[2] = VLEN(disp); |
| 246 |
|
if (d < -FTINY) { /* fold pyramid */ |
| 267 |
|
d = DOT(disp,v->hvec); |
| 268 |
|
d2 = DOT(disp,v->vdir); |
| 269 |
|
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
| 270 |
< |
d = d*d + d2*d2; |
| 271 |
< |
if (d <= FTINY*FTINY) |
| 270 |
> |
d2 = d*d + d2*d2; |
| 271 |
> |
if (d2 <= FTINY*FTINY) |
| 272 |
|
return(VL_BAD); /* at pole */ |
| 273 |
< |
if ((v->vaft > FTINY) & (d > v->vaft*v->vaft)) |
| 273 |
> |
if ((v->vaft > FTINY) & (d2 >= v->vaft*v->vaft)) |
| 274 |
|
rflags |= VL_BEYOND; |
| 275 |
< |
d = 1.0/sqrt(d); |
| 275 |
> |
d = 1.0/sqrt(d2); |
| 276 |
|
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
| 277 |
|
ip[2] = VLEN(disp); |
| 278 |
|
ip[2] *= (1.0 - v->vfore*d); |
| 310 |
|
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
| 311 |
|
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
| 312 |
|
gotall: /* add appropriate return flags */ |
| 313 |
< |
rflags |= VL_BEHIND*(ip[2] <= 0.0); |
| 313 |
> |
if (ip[2] <= 0.0) |
| 314 |
> |
rflags |= VL_BEHIND; |
| 315 |
> |
else if ((v->type != VT_PER) & (v->type != VT_CYL)) |
| 316 |
> |
rflags |= VL_BEYOND*((v->vaft > FTINY) & |
| 317 |
> |
(ip[2] >= v->vaft - v->vfore)); |
| 318 |
|
rflags |= VL_OUTSIDE*((0.0 >= ip[0]) | (ip[0] >= 1.0) | |
| 319 |
|
(0.0 >= ip[1]) | (ip[1] >= 1.0)); |
| 321 |
– |
if ((v->vaft > FTINY) & !(rflags & (VL_BEHIND|VL_BEYOND))) |
| 322 |
– |
rflags |= VL_BEYOND*(ip[2] > v->vaft - v->vfore); |
| 320 |
|
return(rflags); |
| 321 |
|
} |
| 322 |
|
|
| 381 |
|
char *av[] |
| 382 |
|
) |
| 383 |
|
{ |
| 384 |
< |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
| 384 |
> |
#define check(c,l) if ((av[0][c]&&!isspace(av[0][c])) || \ |
| 385 |
|
badarg(ac-1,av+1,l)) return(-1) |
| 386 |
|
|
| 387 |
|
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
| 388 |
|
return(-1); |
| 389 |
|
switch (av[0][2]) { |
| 390 |
|
case 't': /* type */ |
| 391 |
< |
if (!av[0][3] || av[0][3]==' ') |
| 391 |
> |
if (!av[0][3] || isspace(av[0][3])) |
| 392 |
|
return(-1); |
| 393 |
|
check(4,""); |
| 394 |
|
v->type = av[0][3]; |
| 509 |
|
sprintf(cp, " -vt%c", vp->type); |
| 510 |
|
cp += strlen(cp); |
| 511 |
|
} |
| 512 |
< |
if (!VEQ(vp->vp,stdview.vp)) { |
| 512 |
> |
if (!VABSEQ(vp->vp,stdview.vp)) { |
| 513 |
|
sprintf(cp, " -vp %.6g %.6g %.6g", |
| 514 |
|
vp->vp[0], vp->vp[1], vp->vp[2]); |
| 515 |
|
cp += strlen(cp); |
| 516 |
|
} |
| 517 |
< |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
| 517 |
> |
if (!FABSEQ(vp->vdist,stdview.vdist) || !VABSEQ(vp->vdir,stdview.vdir)) { |
| 518 |
|
sprintf(cp, " -vd %.6g %.6g %.6g", |
| 519 |
|
vp->vdir[0]*vp->vdist, |
| 520 |
|
vp->vdir[1]*vp->vdist, |
| 521 |
|
vp->vdir[2]*vp->vdist); |
| 522 |
|
cp += strlen(cp); |
| 523 |
|
} |
| 524 |
< |
if (!VEQ(vp->vup,stdview.vup)) { |
| 524 |
> |
if (!VABSEQ(vp->vup,stdview.vup)) { |
| 525 |
|
sprintf(cp, " -vu %.6g %.6g %.6g", |
| 526 |
|
vp->vup[0], vp->vup[1], vp->vup[2]); |
| 527 |
|
cp += strlen(cp); |
| 528 |
|
} |
| 529 |
< |
if (!FEQ(vp->horiz,stdview.horiz)) { |
| 529 |
> |
if (!FABSEQ(vp->horiz,stdview.horiz)) { |
| 530 |
|
sprintf(cp, " -vh %.6g", vp->horiz); |
| 531 |
|
cp += strlen(cp); |
| 532 |
|
} |
| 533 |
< |
if (!FEQ(vp->vert,stdview.vert)) { |
| 533 |
> |
if (!FABSEQ(vp->vert,stdview.vert)) { |
| 534 |
|
sprintf(cp, " -vv %.6g", vp->vert); |
| 535 |
|
cp += strlen(cp); |
| 536 |
|
} |
| 537 |
< |
if (!FEQ(vp->vfore,stdview.vfore)) { |
| 537 |
> |
if (!FABSEQ(vp->vfore,stdview.vfore)) { |
| 538 |
|
sprintf(cp, " -vo %.6g", vp->vfore); |
| 539 |
|
cp += strlen(cp); |
| 540 |
|
} |
| 541 |
< |
if (!FEQ(vp->vaft,stdview.vaft)) { |
| 541 |
> |
if (!FABSEQ(vp->vaft,stdview.vaft)) { |
| 542 |
|
sprintf(cp, " -va %.6g", vp->vaft); |
| 543 |
|
cp += strlen(cp); |
| 544 |
|
} |
| 545 |
< |
if (!FEQ(vp->hoff,stdview.hoff)) { |
| 545 |
> |
if (!FABSEQ(vp->hoff,stdview.hoff)) { |
| 546 |
|
sprintf(cp, " -vs %.6g", vp->hoff); |
| 547 |
|
cp += strlen(cp); |
| 548 |
|
} |
| 549 |
< |
if (!FEQ(vp->voff,stdview.voff)) { |
| 549 |
> |
if (!FABSEQ(vp->voff,stdview.voff)) { |
| 550 |
|
sprintf(cp, " -vl %.6g", vp->voff); |
| 551 |
|
cp += strlen(cp); |
| 552 |
|
} |
| 573 |
|
} |
| 574 |
|
/* skip leading path */ |
| 575 |
|
cp = s; |
| 576 |
< |
while (*cp && *cp != ' ') |
| 576 |
> |
while (*cp && !isspace(*cp)) |
| 577 |
|
cp++; |
| 578 |
|
while (cp > s && !ISDIRSEP(cp[-1])) |
| 579 |
|
cp--; |
| 625 |
|
if (rp != NULL && !fgetsresolu(rp, fp)) |
| 626 |
|
mvs.ok = 0; |
| 627 |
|
|
| 628 |
< |
fclose(fp); |
| 628 |
> |
if (fp != stdin) |
| 629 |
> |
fclose(fp); |
| 630 |
|
|
| 631 |
|
return(mvs.ok); |
| 632 |
|
} |
