| 125 |
|
} else if (direc) |
| 126 |
|
for (i = 0; i < 3; i++) |
| 127 |
|
vec[i] -= ourview.vp[i]; |
| 128 |
+ |
if (normalize(vec) == 0.0) |
| 129 |
+ |
return(-1); |
| 130 |
|
return(0); |
| 131 |
|
} |
| 132 |
|
|
| 388 |
|
{ |
| 389 |
|
double d; |
| 390 |
|
FVECT v1; |
| 391 |
< |
VIEW nv; |
| 391 |
> |
VIEW nv = ourview; |
| 392 |
|
register int i; |
| 393 |
|
|
| 392 |
– |
VCOPY(nv.vup, ourview.vup); |
| 393 |
– |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
| 394 |
|
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
| 395 |
|
if (elev != 0.0) { |
| 396 |
|
fcross(v1, ourview.vup, nv.vdir); |
| 403 |
|
d = 0.0; /* don't move closer */ |
| 404 |
|
for (i = 0; i < 3; i++) |
| 405 |
|
d += (vc[i] - ourview.vp[i])*ourview.vdir[i]; |
| 406 |
– |
nv.vfore = ourview.vfore; |
| 407 |
– |
nv.vaft = ourview.vaft; |
| 406 |
|
} else { |
| 409 |
– |
nv.horiz = ourview.horiz; |
| 410 |
– |
nv.vert = ourview.vert; |
| 407 |
|
d = sqrt(dist2(ourview.vp, vc)) / mag; |
| 408 |
|
if ((nv.vfore = ourview.vfore) > FTINY) { |
| 409 |
|
nv.vfore += d - d*mag; |
