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 "copyright.h" |
11 |
+ |
|
12 |
|
#include "standard.h" |
13 |
|
|
14 |
|
#include "view.h" |
15 |
|
|
15 |
– |
#include "resolu.h" |
16 |
– |
|
16 |
|
#include "paths.h" |
17 |
|
|
18 |
|
#define FEQ(x,y) (fabs((x)-(y)) <= FTINY) |
29 |
|
static char ill_horiz[] = "illegal horizontal view size"; |
30 |
|
static char ill_vert[] = "illegal vertical view size"; |
31 |
|
|
32 |
< |
if (v->vfore < -FTINY || v->vaft < -FTINY || |
34 |
< |
(v->vaft > FTINY && v->vaft <= v->vfore)) |
32 |
> |
if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore)) |
33 |
|
return("illegal fore/aft clipping plane"); |
34 |
|
|
35 |
|
if (normalize(v->vdir) == 0.0) /* normalize direction */ |
107 |
|
} |
108 |
|
|
109 |
|
|
110 |
+ |
void |
111 |
|
normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
112 |
|
double va; /* view aspect ratio */ |
113 |
|
double *ap; /* pixel aspect in (or out if 0) */ |
199 |
|
} |
200 |
|
|
201 |
|
|
202 |
+ |
void |
203 |
|
viewloc(ip, v, p) /* find image location for point */ |
204 |
|
FVECT ip; |
205 |
|
register VIEW *v; |
246 |
|
d = 1.0/sqrt(d*d + d2*d2); |
247 |
|
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
248 |
|
ip[2] = VLEN(disp); |
249 |
< |
if (v->vfore > FTINY) |
250 |
< |
ip[2] *= (1.0 - v->vfore*d); |
249 |
> |
ip[2] *= (1.0 - v->vfore*d); |
250 |
|
return; |
251 |
|
case VT_ANG: /* angular fisheye */ |
252 |
|
ip[0] = 0.5 - v->hoff; |
269 |
|
} |
270 |
|
|
271 |
|
|
272 |
+ |
void |
273 |
|
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
274 |
< |
FLOAT loc[2]; |
274 |
> |
RREAL loc[2]; |
275 |
|
register RESOLU *rp; |
276 |
|
int px, py; |
277 |
|
{ |
278 |
|
register int x, y; |
279 |
|
|
280 |
< |
if (rp->or & YMAJOR) { |
280 |
> |
if (rp->rt & YMAJOR) { |
281 |
|
x = px; |
282 |
|
y = py; |
283 |
|
} else { |
284 |
|
x = py; |
285 |
|
y = px; |
286 |
|
} |
287 |
< |
if (rp->or & XDECR) |
287 |
> |
if (rp->rt & XDECR) |
288 |
|
x = rp->xr-1 - x; |
289 |
< |
if (rp->or & YDECR) |
289 |
> |
if (rp->rt & YDECR) |
290 |
|
y = rp->yr-1 - y; |
291 |
|
loc[0] = (x+.5)/rp->xr; |
292 |
|
loc[1] = (y+.5)/rp->yr; |
293 |
|
} |
294 |
|
|
295 |
|
|
296 |
+ |
void |
297 |
|
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
298 |
|
int pp[2]; |
299 |
|
register RESOLU *rp; |
303 |
|
|
304 |
|
x = lx * rp->xr; |
305 |
|
y = ly * rp->yr; |
306 |
< |
if (rp->or & XDECR) |
306 |
> |
if (rp->rt & XDECR) |
307 |
|
x = rp->xr-1 - x; |
308 |
< |
if (rp->or & YDECR) |
308 |
> |
if (rp->rt & YDECR) |
309 |
|
y = rp->yr-1 - y; |
310 |
< |
if (rp->or & YMAJOR) { |
310 |
> |
if (rp->rt & YMAJOR) { |
311 |
|
pp[0] = x; |
312 |
|
pp[1] = y; |
313 |
|
} else { |
394 |
|
int na; |
395 |
|
int nvopts = 0; |
396 |
|
|
397 |
< |
if (*s != '-') |
398 |
< |
s = sskip2(s,1); |
397 |
> |
while (*s && *s != ' ') |
398 |
> |
s++; |
399 |
|
while (*s) { |
400 |
|
ac = 0; |
401 |
|
do { |
416 |
|
} |
417 |
|
|
418 |
|
|
419 |
+ |
void |
420 |
|
fprintview(vp, fp) /* write out view parameters */ |
421 |
|
register VIEW *vp; |
422 |
|
FILE *fp; |
540 |
|
struct myview mvs; |
541 |
|
FILE *fp; |
542 |
|
|
543 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
543 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
544 |
> |
fp = stdin; |
545 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
546 |
|
return(-1); |
547 |
|
|
548 |
|
mvs.hv = vp; |
549 |
|
mvs.ok = 0; |
550 |
|
|
551 |
< |
getheader(fp, gethview, &mvs); |
551 |
> |
getheader(fp, (int (*)(char *, char *))&gethview, (char *)&mvs); |
552 |
|
|
553 |
|
if (rp != NULL && !fgetsresolu(rp, fp)) |
554 |
|
mvs.ok = 0; |