1 |
– |
/* Copyright (c) 1996 Regents of the University of California */ |
2 |
– |
|
1 |
|
#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
|
#endif |
6 |
– |
|
4 |
|
/* |
5 |
|
* image.c - routines for image generation. |
6 |
+ |
* |
7 |
+ |
* External symbols declared in view.h |
8 |
|
*/ |
9 |
|
|
10 |
< |
#include "standard.h" |
10 |
> |
#include "copyright.h" |
11 |
|
|
12 |
+ |
#include "rtio.h" |
13 |
+ |
#include "rtmath.h" |
14 |
+ |
#include "paths.h" |
15 |
|
#include "view.h" |
16 |
|
|
15 |
– |
#include "resolu.h" |
17 |
|
|
17 |
– |
#include "paths.h" |
18 |
– |
|
18 |
|
#define FEQ(x,y) (fabs((x)-(y)) <= FTINY) |
19 |
|
#define VEQ(v,w) (FEQ((v)[0],(w)[0]) && FEQ((v)[1],(w)[1]) \ |
20 |
|
&& FEQ((v)[2],(w)[2])) |
21 |
|
|
22 |
|
VIEW stdview = STDVIEW; /* default view parameters */ |
23 |
|
|
24 |
+ |
static gethfunc gethview; |
25 |
|
|
26 |
+ |
|
27 |
|
char * |
28 |
|
setview(v) /* set hvec and vvec, return message on error */ |
29 |
|
register VIEW *v; |
31 |
|
static char ill_horiz[] = "illegal horizontal view size"; |
32 |
|
static char ill_vert[] = "illegal vertical view size"; |
33 |
|
|
34 |
< |
if (v->vfore < -FTINY || v->vaft < -FTINY || |
34 |
< |
(v->vaft > FTINY && v->vaft <= v->vfore)) |
34 |
> |
if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore)) |
35 |
|
return("illegal fore/aft clipping plane"); |
36 |
|
|
37 |
|
if (normalize(v->vdir) == 0.0) /* normalize direction */ |
109 |
|
} |
110 |
|
|
111 |
|
|
112 |
+ |
void |
113 |
|
normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
114 |
|
double va; /* view aspect ratio */ |
115 |
|
double *ap; /* pixel aspect in (or out if 0) */ |
201 |
|
} |
202 |
|
|
203 |
|
|
204 |
+ |
void |
205 |
|
viewloc(ip, v, p) /* find image location for point */ |
206 |
|
FVECT ip; |
207 |
|
register VIEW *v; |
208 |
|
FVECT p; |
209 |
|
{ |
210 |
< |
double d; |
210 |
> |
double d, d2; |
211 |
|
FVECT disp; |
212 |
|
|
213 |
|
disp[0] = p[0] - v->vp[0]; |
220 |
|
break; |
221 |
|
case VT_PER: /* perspective view */ |
222 |
|
d = DOT(disp,v->vdir); |
223 |
< |
ip[2] = sqrt(DOT(disp,disp)); |
223 |
> |
ip[2] = VLEN(disp); |
224 |
|
if (d < 0.0) { /* fold pyramid */ |
225 |
|
ip[2] = -ip[2]; |
226 |
|
d = -d; |
242 |
|
ip[2] -= v->vfore; |
243 |
|
break; |
244 |
|
case VT_CYL: /* cylindrical panorama */ |
243 |
– |
ip[2] = DOT(disp,v->vdir); |
245 |
|
d = DOT(disp,v->hvec); |
246 |
< |
ip[0] = 180.0/PI * atan2(d,ip[2]) / v->horiz + 0.5 - v->hoff; |
247 |
< |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
248 |
< |
if (v->vfore > FTINY) |
249 |
< |
ip[2] = sqrt(DOT(disp,disp)) * |
250 |
< |
(1.0 - v->vfore/sqrt(d*d + ip[2]*ip[2])); |
251 |
< |
else |
251 |
< |
ip[2] = sqrt(DOT(disp,disp)); |
246 |
> |
d2 = DOT(disp,v->vdir); |
247 |
> |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
248 |
> |
d = 1.0/sqrt(d*d + d2*d2); |
249 |
> |
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
250 |
> |
ip[2] = VLEN(disp); |
251 |
> |
ip[2] *= (1.0 - v->vfore*d); |
252 |
|
return; |
253 |
|
case VT_ANG: /* angular fisheye */ |
254 |
|
ip[0] = 0.5 - v->hoff; |
271 |
|
} |
272 |
|
|
273 |
|
|
274 |
+ |
void |
275 |
|
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
276 |
< |
FLOAT loc[2]; |
276 |
> |
RREAL loc[2]; |
277 |
|
register RESOLU *rp; |
278 |
|
int px, py; |
279 |
|
{ |
280 |
|
register int x, y; |
281 |
|
|
282 |
< |
if (rp->or & YMAJOR) { |
282 |
> |
if (rp->rt & YMAJOR) { |
283 |
|
x = px; |
284 |
|
y = py; |
285 |
|
} else { |
286 |
|
x = py; |
287 |
|
y = px; |
288 |
|
} |
289 |
< |
if (rp->or & XDECR) |
289 |
> |
if (rp->rt & XDECR) |
290 |
|
x = rp->xr-1 - x; |
291 |
< |
if (rp->or & YDECR) |
291 |
> |
if (rp->rt & YDECR) |
292 |
|
y = rp->yr-1 - y; |
293 |
|
loc[0] = (x+.5)/rp->xr; |
294 |
|
loc[1] = (y+.5)/rp->yr; |
295 |
|
} |
296 |
|
|
297 |
|
|
298 |
+ |
void |
299 |
|
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
300 |
|
int pp[2]; |
301 |
|
register RESOLU *rp; |
305 |
|
|
306 |
|
x = lx * rp->xr; |
307 |
|
y = ly * rp->yr; |
308 |
< |
if (rp->or & XDECR) |
308 |
> |
if (rp->rt & XDECR) |
309 |
|
x = rp->xr-1 - x; |
310 |
< |
if (rp->or & YDECR) |
310 |
> |
if (rp->rt & YDECR) |
311 |
|
y = rp->yr-1 - y; |
312 |
< |
if (rp->or & YMAJOR) { |
312 |
> |
if (rp->rt & YMAJOR) { |
313 |
|
pp[0] = x; |
314 |
|
pp[1] = y; |
315 |
|
} else { |
396 |
|
int na; |
397 |
|
int nvopts = 0; |
398 |
|
|
399 |
+ |
while (*s == ' ') |
400 |
+ |
s++; |
401 |
|
if (*s != '-') |
402 |
< |
s = sskip(s); |
402 |
> |
s = sskip2(s,1); |
403 |
|
while (*s) { |
404 |
|
ac = 0; |
405 |
|
do { |
406 |
< |
av[ac++] = s; |
406 |
> |
if (ac || *s == '-') |
407 |
> |
av[ac++] = s; |
408 |
|
while (*s && *s != ' ') |
409 |
|
s++; |
410 |
|
while (*s == ' ') |
421 |
|
} |
422 |
|
|
423 |
|
|
424 |
+ |
void |
425 |
|
fprintview(vp, fp) /* write out view parameters */ |
426 |
|
register VIEW *vp; |
427 |
|
FILE *fp; |
494 |
|
isview(s) /* is this a view string? */ |
495 |
|
char *s; |
496 |
|
{ |
497 |
< |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","pinterp",NULL}; |
497 |
> |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
498 |
|
extern char *progname; |
499 |
|
register char *cp; |
500 |
|
register char **an; |
525 |
|
}; |
526 |
|
|
527 |
|
|
528 |
< |
static |
529 |
< |
gethview(s, v) /* get view from header */ |
530 |
< |
char *s; |
531 |
< |
register struct myview *v; |
528 |
> |
static int |
529 |
> |
gethview( /* get view from header */ |
530 |
> |
char *s, |
531 |
> |
void *v |
532 |
> |
) |
533 |
|
{ |
534 |
< |
if (isview(s) && sscanview(v->hv, s) > 0) |
535 |
< |
v->ok++; |
534 |
> |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
535 |
> |
((struct myview*)v)->ok++; |
536 |
> |
return(0); |
537 |
|
} |
538 |
|
|
539 |
|
|
546 |
|
struct myview mvs; |
547 |
|
FILE *fp; |
548 |
|
|
549 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
549 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
550 |
> |
fp = stdin; |
551 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
552 |
|
return(-1); |
553 |
|
|
554 |
|
mvs.hv = vp; |