| 448 |
|
if (vp->vert > 360.) |
| 449 |
|
vp->vert = 360.; |
| 450 |
|
return; |
| 451 |
+ |
case VT_PLS: /* planisphere fisheye */ |
| 452 |
+ |
vp->horiz = sin((PI/180./2.)*vp->horiz) / |
| 453 |
+ |
(1.0 + cos((PI/180./2.)*vp->horiz)) / zf; |
| 454 |
+ |
vp->horiz *= vp->horiz; |
| 455 |
+ |
vp->horiz = (2.*180./PI)*acos((1. - vp->horiz) / |
| 456 |
+ |
(1. + vp->horiz)); |
| 457 |
+ |
vp->vert = sin((PI/180./2.)*vp->vert) / |
| 458 |
+ |
(1.0 + cos((PI/180./2.)*vp->vert)) / zf; |
| 459 |
+ |
vp->vert *= vp->vert; |
| 460 |
+ |
vp->vert = (2.*180./PI)*acos((1. - vp->vert) / |
| 461 |
+ |
(1. + vp->vert)); |
| 462 |
+ |
return; |
| 463 |
|
case VT_CYL: /* cylindrical panorama */ |
| 464 |
|
vp->horiz /= zf; |
| 465 |
|
if (vp->horiz > 360.) |