33 |
|
static char ill_horiz[] = "illegal horizontal view size"; |
34 |
|
static char ill_vert[] = "illegal vertical view size"; |
35 |
|
|
36 |
< |
if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore)) |
36 |
> |
if ((v->vfore < -FTINY) | (v->vaft < -FTINY) || |
37 |
> |
(v->vaft > FTINY) & (v->vaft <= v->vfore)) |
38 |
|
return("illegal fore/aft clipping plane"); |
39 |
|
|
40 |
|
if (v->vdist <= FTINY) |
170 |
|
direc[0] = v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
171 |
|
direc[1] = v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
172 |
|
direc[2] = v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
173 |
< |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
173 |
< |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
174 |
< |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
173 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
174 |
|
d = normalize(direc); |
175 |
|
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
176 |
|
case VT_HEM: /* hemispherical fisheye */ |
181 |
|
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
182 |
|
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
183 |
|
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
184 |
< |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
186 |
< |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
187 |
< |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
184 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
185 |
|
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
186 |
|
case VT_CYL: /* cylindrical panorama */ |
187 |
|
d = x * v->horiz * (PI/180.0); |
190 |
|
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
191 |
|
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
192 |
|
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
193 |
< |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
197 |
< |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
198 |
< |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
193 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
194 |
|
d = normalize(direc); |
195 |
|
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
196 |
|
case VT_ANG: /* angular fisheye */ |
207 |
|
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
208 |
|
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
209 |
|
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
210 |
< |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
216 |
< |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
217 |
< |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
210 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
211 |
|
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
212 |
|
case VT_PLS: /* planispheric fisheye */ |
213 |
|
x *= sqrt(v->hn2); |
219 |
|
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
220 |
|
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
221 |
|
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
222 |
< |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
230 |
< |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
231 |
< |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
222 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
223 |
|
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
224 |
|
} |
225 |
|
return(-1.0); |