| 425 |
|
} |
| 426 |
|
|
| 427 |
|
|
| 428 |
< |
zoomview(vp, zf) /* zoom in our out */ |
| 428 |
> |
zoomview(vp, zf) /* zoom in or out */ |
| 429 |
|
register VIEW *vp; |
| 430 |
|
double zf; |
| 431 |
|
{ |
| 432 |
|
switch (vp->type) { |
| 433 |
|
case VT_PAR: /* parallel view */ |
| 434 |
+ |
vp->horiz /= zf; |
| 435 |
+ |
vp->vert /= zf; |
| 436 |
+ |
return; |
| 437 |
|
case VT_ANG: /* angular fisheye */ |
| 438 |
|
vp->horiz /= zf; |
| 439 |
+ |
if (vp->horiz > 360.) |
| 440 |
+ |
vp->horiz = 360.; |
| 441 |
|
vp->vert /= zf; |
| 442 |
+ |
if (vp->vert > 360.) |
| 443 |
+ |
vp->vert = 360.; |
| 444 |
+ |
return; |
| 445 |
+ |
case VT_CYL: /* cylindrical panorama */ |
| 446 |
+ |
vp->horiz /= zf; |
| 447 |
+ |
if (vp->horiz > 360.) |
| 448 |
+ |
vp->horiz = 360.; |
| 449 |
+ |
vp->vert = atan(tan(vp->vert*(PI/180./2.))/zf) / (PI/180./2.); |
| 450 |
|
return; |
| 451 |
|
case VT_PER: /* perspective view */ |
| 452 |
|
vp->horiz = atan(tan(vp->horiz*(PI/180./2.))/zf) / |
