9 |
|
|
10 |
|
#include "copyright.h" |
11 |
|
|
12 |
< |
#include "standard.h" |
13 |
< |
|
12 |
> |
#include <ctype.h> |
13 |
> |
#include "rtio.h" |
14 |
> |
#include "rtmath.h" |
15 |
> |
#include "paths.h" |
16 |
|
#include "view.h" |
17 |
|
|
16 |
– |
#include "paths.h" |
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]) \ |
22 |
|
|
23 |
|
VIEW stdview = STDVIEW; /* default view parameters */ |
24 |
|
|
25 |
+ |
static gethfunc gethview; |
26 |
|
|
27 |
+ |
|
28 |
|
char * |
29 |
|
setview(v) /* set hvec and vvec, return message on error */ |
30 |
|
register VIEW *v; |
35 |
|
if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore)) |
36 |
|
return("illegal fore/aft clipping plane"); |
37 |
|
|
38 |
< |
if (normalize(v->vdir) == 0.0) /* normalize direction */ |
38 |
> |
if (v->vdist <= FTINY) |
39 |
> |
return("illegal view distance"); |
40 |
> |
v->vdist *= normalize(v->vdir); /* normalize direction */ |
41 |
> |
if (v->vdist == 0.0) |
42 |
|
return("zero view direction"); |
43 |
|
|
44 |
|
if (normalize(v->vup) == 0.0) /* normalize view up */ |
93 |
|
v->hn2 = 2.0 * sin(v->horiz*(PI/180.0/2.0)); |
94 |
|
v->vn2 = 2.0 * sin(v->vert*(PI/180.0/2.0)); |
95 |
|
break; |
96 |
+ |
case VT_PLS: /* planispheric fisheye */ |
97 |
+ |
if (v->horiz >= 360.0-FTINY) |
98 |
+ |
return(ill_horiz); |
99 |
+ |
if (v->vert >= 360.0-FTINY) |
100 |
+ |
return(ill_vert); |
101 |
+ |
v->hn2 = 2.*sin(v->horiz*(PI/180.0/2.0)) / |
102 |
+ |
(1.0 + cos(v->horiz*(PI/180.0/2.0))); |
103 |
+ |
v->vn2 = 2.*sin(v->vert*(PI/180.0/2.0)) / |
104 |
+ |
(1.0 + cos(v->vert*(PI/180.0/2.0))); |
105 |
+ |
break; |
106 |
|
default: |
107 |
|
return("unknown view type"); |
108 |
|
} |
109 |
< |
if (v->type != VT_ANG) { |
109 |
> |
if (v->type != VT_ANG && v->type != VT_PLS) { |
110 |
|
if (v->type != VT_CYL) { |
111 |
|
v->hvec[0] *= v->hn2; |
112 |
|
v->hvec[1] *= v->hn2; |
193 |
|
d = normalize(direc); |
194 |
|
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
195 |
|
case VT_ANG: /* angular fisheye */ |
196 |
< |
x *= v->horiz/180.0; |
197 |
< |
y *= v->vert/180.0; |
196 |
> |
x *= (1.0/180.0)*v->horiz; |
197 |
> |
y *= (1.0/180.0)*v->vert; |
198 |
|
d = x*x + y*y; |
199 |
|
if (d > 1.0) |
200 |
|
return(-1.0); |
201 |
|
d = sqrt(d); |
202 |
|
z = cos(PI*d); |
203 |
< |
d = d <= FTINY ? PI : sqrt(1 - z*z)/d; |
203 |
> |
d = d <= FTINY ? PI : sqrt(1.0 - z*z)/d; |
204 |
|
x *= d; |
205 |
|
y *= d; |
206 |
|
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
210 |
|
orig[1] = v->vp[1] + v->vfore*direc[1]; |
211 |
|
orig[2] = v->vp[2] + v->vfore*direc[2]; |
212 |
|
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
213 |
+ |
case VT_PLS: /* planispheric fisheye */ |
214 |
+ |
x *= sqrt(v->hn2); |
215 |
+ |
y *= sqrt(v->vn2); |
216 |
+ |
d = x*x + y*y; |
217 |
+ |
z = (1. - d)/(1. + d); |
218 |
+ |
d = d <= FTINY*FTINY ? PI : sqrt((1.0 - z*z)/d); |
219 |
+ |
x *= d; |
220 |
+ |
y *= d; |
221 |
+ |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
222 |
+ |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
223 |
+ |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
224 |
+ |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
225 |
+ |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
226 |
+ |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
227 |
+ |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
228 |
|
} |
229 |
|
return(-1.0); |
230 |
|
} |
239 |
|
double d, d2; |
240 |
|
FVECT disp; |
241 |
|
|
242 |
< |
disp[0] = p[0] - v->vp[0]; |
212 |
< |
disp[1] = p[1] - v->vp[1]; |
213 |
< |
disp[2] = p[2] - v->vp[2]; |
242 |
> |
VSUB(disp, p, v->vp); |
243 |
|
|
244 |
|
switch (v->type) { |
245 |
|
case VT_PAR: /* parallel view */ |
288 |
|
ip[0] += 180.0/v->horiz; |
289 |
|
return; |
290 |
|
} |
291 |
< |
d = acos(d)/PI / sqrt(1.0 - d*d); |
292 |
< |
ip[0] += DOT(disp,v->hvec)*d*180.0/v->horiz; |
293 |
< |
ip[1] += DOT(disp,v->vvec)*d*180.0/v->vert; |
291 |
> |
d = (180.0/PI)*acos(d) / sqrt(1.0 - d*d); |
292 |
> |
ip[0] += DOT(disp,v->hvec)*d/v->horiz; |
293 |
> |
ip[1] += DOT(disp,v->vvec)*d/v->vert; |
294 |
|
return; |
295 |
+ |
case VT_PLS: /* planispheric fisheye */ |
296 |
+ |
ip[0] = 0.5 - v->hoff; |
297 |
+ |
ip[1] = 0.5 - v->voff; |
298 |
+ |
ip[2] = normalize(disp) - v->vfore; |
299 |
+ |
d = DOT(disp,v->vdir); |
300 |
+ |
if (d >= 1.0-FTINY) |
301 |
+ |
return; |
302 |
+ |
if (d <= -(1.0-FTINY)) |
303 |
+ |
return; /* really an error */ |
304 |
+ |
d = sqrt(1.0 - d*d) / (1.0 + d); |
305 |
+ |
ip[0] += DOT(disp,v->hvec)*d/sqrt(v->hn2); |
306 |
+ |
ip[1] += DOT(disp,v->vvec)*d/sqrt(v->vn2); |
307 |
+ |
return; |
308 |
|
} |
309 |
|
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
310 |
|
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
313 |
|
|
314 |
|
void |
315 |
|
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
316 |
< |
FLOAT loc[2]; |
316 |
> |
RREAL loc[2]; |
317 |
|
register RESOLU *rp; |
318 |
|
int px, py; |
319 |
|
{ |
388 |
|
v->vdir[0] = atof(av[1]); |
389 |
|
v->vdir[1] = atof(av[2]); |
390 |
|
v->vdir[2] = atof(av[3]); |
391 |
+ |
v->vdist = 1.; |
392 |
|
return(3); |
393 |
|
case 'u': /* up */ |
394 |
|
check(3,"fff"); |
437 |
|
int na; |
438 |
|
int nvopts = 0; |
439 |
|
|
440 |
< |
if (*s != '-') |
441 |
< |
s = sskip2(s,1); |
440 |
> |
while (isspace(*s)) |
441 |
> |
if (!*s++) |
442 |
> |
return(0); |
443 |
|
while (*s) { |
444 |
|
ac = 0; |
445 |
|
do { |
446 |
< |
av[ac++] = s; |
447 |
< |
while (*s && *s != ' ') |
446 |
> |
if (ac || *s == '-') |
447 |
> |
av[ac++] = s; |
448 |
> |
while (*s && !isspace(*s)) |
449 |
|
s++; |
450 |
< |
while (*s == ' ') |
450 |
> |
while (isspace(*s)) |
451 |
|
s++; |
452 |
|
} while (*s && ac < 4); |
453 |
|
if ((na = getviewopt(vp, ac, av)) >= 0) { |
468 |
|
{ |
469 |
|
fprintf(fp, " -vt%c", vp->type); |
470 |
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
471 |
< |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
471 |
> |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
472 |
> |
vp->vdir[1]*vp->vdist, |
473 |
> |
vp->vdir[2]*vp->vdist); |
474 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
475 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
476 |
|
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
485 |
|
static char vwstr[128]; |
486 |
|
register char *cp = vwstr; |
487 |
|
|
488 |
+ |
*cp = '\0'; |
489 |
|
if (vp->type != stdview.type) { |
490 |
|
sprintf(cp, " -vt%c", vp->type); |
491 |
|
cp += strlen(cp); |
495 |
|
vp->vp[0], vp->vp[1], vp->vp[2]); |
496 |
|
cp += strlen(cp); |
497 |
|
} |
498 |
< |
if (!VEQ(vp->vdir,stdview.vdir)) { |
498 |
> |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
499 |
|
sprintf(cp, " -vd %.6g %.6g %.6g", |
500 |
< |
vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
500 |
> |
vp->vdir[0]*vp->vdist, |
501 |
> |
vp->vdir[1]*vp->vdist, |
502 |
> |
vp->vdir[2]*vp->vdist); |
503 |
|
cp += strlen(cp); |
504 |
|
} |
505 |
|
if (!VEQ(vp->vup,stdview.vup)) { |
539 |
|
isview(s) /* is this a view string? */ |
540 |
|
char *s; |
541 |
|
{ |
542 |
< |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","pinterp",NULL}; |
542 |
> |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
543 |
|
extern char *progname; |
544 |
|
register char *cp; |
545 |
|
register char **an; |
571 |
|
|
572 |
|
|
573 |
|
static int |
574 |
< |
gethview(s, v) /* get view from header */ |
575 |
< |
char *s; |
576 |
< |
register struct myview *v; |
574 |
> |
gethview( /* get view from header */ |
575 |
> |
char *s, |
576 |
> |
void *v |
577 |
> |
) |
578 |
|
{ |
579 |
< |
if (isview(s) && sscanview(v->hv, s) > 0) |
580 |
< |
v->ok++; |
579 |
> |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
580 |
> |
((struct myview*)v)->ok++; |
581 |
|
return(0); |
582 |
|
} |
583 |
|
|
599 |
|
mvs.hv = vp; |
600 |
|
mvs.ok = 0; |
601 |
|
|
602 |
< |
getheader(fp, (int (*)(char *, char *))&gethview, (char *)&mvs); |
602 |
> |
getheader(fp, gethview, &mvs); |
603 |
|
|
604 |
|
if (rp != NULL && !fgetsresolu(rp, fp)) |
605 |
|
mvs.ok = 0; |