| 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; |
| 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 */ |
| 37 |
> |
v->vdist *= normalize(v->vdir); /* normalize direction */ |
| 38 |
> |
if (v->vdist == 0.0) |
| 39 |
|
return("zero view direction"); |
| 40 |
|
|
| 41 |
|
if (normalize(v->vup) == 0.0) /* normalize view up */ |
| 110 |
|
} |
| 111 |
|
|
| 112 |
|
|
| 113 |
+ |
void |
| 114 |
|
normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
| 115 |
|
double va; /* view aspect ratio */ |
| 116 |
|
double *ap; /* pixel aspect in (or out if 0) */ |
| 202 |
|
} |
| 203 |
|
|
| 204 |
|
|
| 205 |
+ |
void |
| 206 |
|
viewloc(ip, v, p) /* find image location for point */ |
| 207 |
|
FVECT ip; |
| 208 |
|
register VIEW *v; |
| 272 |
|
} |
| 273 |
|
|
| 274 |
|
|
| 275 |
+ |
void |
| 276 |
|
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
| 277 |
< |
FLOAT loc[2]; |
| 277 |
> |
RREAL loc[2]; |
| 278 |
|
register RESOLU *rp; |
| 279 |
|
int px, py; |
| 280 |
|
{ |
| 281 |
|
register int x, y; |
| 282 |
|
|
| 283 |
< |
if (rp->or & YMAJOR) { |
| 283 |
> |
if (rp->rt & YMAJOR) { |
| 284 |
|
x = px; |
| 285 |
|
y = py; |
| 286 |
|
} else { |
| 287 |
|
x = py; |
| 288 |
|
y = px; |
| 289 |
|
} |
| 290 |
< |
if (rp->or & XDECR) |
| 290 |
> |
if (rp->rt & XDECR) |
| 291 |
|
x = rp->xr-1 - x; |
| 292 |
< |
if (rp->or & YDECR) |
| 292 |
> |
if (rp->rt & YDECR) |
| 293 |
|
y = rp->yr-1 - y; |
| 294 |
|
loc[0] = (x+.5)/rp->xr; |
| 295 |
|
loc[1] = (y+.5)/rp->yr; |
| 296 |
|
} |
| 297 |
|
|
| 298 |
|
|
| 299 |
+ |
void |
| 300 |
|
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
| 301 |
|
int pp[2]; |
| 302 |
|
register RESOLU *rp; |
| 306 |
|
|
| 307 |
|
x = lx * rp->xr; |
| 308 |
|
y = ly * rp->yr; |
| 309 |
< |
if (rp->or & XDECR) |
| 309 |
> |
if (rp->rt & XDECR) |
| 310 |
|
x = rp->xr-1 - x; |
| 311 |
< |
if (rp->or & YDECR) |
| 311 |
> |
if (rp->rt & YDECR) |
| 312 |
|
y = rp->yr-1 - y; |
| 313 |
< |
if (rp->or & YMAJOR) { |
| 313 |
> |
if (rp->rt & YMAJOR) { |
| 314 |
|
pp[0] = x; |
| 315 |
|
pp[1] = y; |
| 316 |
|
} else { |
| 349 |
|
v->vdir[0] = atof(av[1]); |
| 350 |
|
v->vdir[1] = atof(av[2]); |
| 351 |
|
v->vdir[2] = atof(av[3]); |
| 352 |
+ |
v->vdist = 1.; |
| 353 |
|
return(3); |
| 354 |
|
case 'u': /* up */ |
| 355 |
|
check(3,"fff"); |
| 398 |
|
int na; |
| 399 |
|
int nvopts = 0; |
| 400 |
|
|
| 401 |
+ |
while (*s == ' ') |
| 402 |
+ |
s++; |
| 403 |
|
if (*s != '-') |
| 404 |
|
s = sskip2(s,1); |
| 405 |
|
while (*s) { |
| 406 |
|
ac = 0; |
| 407 |
|
do { |
| 408 |
< |
av[ac++] = s; |
| 408 |
> |
if (ac || *s == '-') |
| 409 |
> |
av[ac++] = s; |
| 410 |
|
while (*s && *s != ' ') |
| 411 |
|
s++; |
| 412 |
|
while (*s == ' ') |
| 423 |
|
} |
| 424 |
|
|
| 425 |
|
|
| 426 |
+ |
void |
| 427 |
|
fprintview(vp, fp) /* write out view parameters */ |
| 428 |
|
register VIEW *vp; |
| 429 |
|
FILE *fp; |
| 430 |
|
{ |
| 431 |
|
fprintf(fp, " -vt%c", vp->type); |
| 432 |
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
| 433 |
< |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
| 433 |
> |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
| 434 |
> |
vp->vdir[1]*vp->vdist, |
| 435 |
> |
vp->vdir[2]*vp->vdist); |
| 436 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
| 437 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
| 438 |
|
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
| 456 |
|
vp->vp[0], vp->vp[1], vp->vp[2]); |
| 457 |
|
cp += strlen(cp); |
| 458 |
|
} |
| 459 |
< |
if (!VEQ(vp->vdir,stdview.vdir)) { |
| 459 |
> |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
| 460 |
|
sprintf(cp, " -vd %.6g %.6g %.6g", |
| 461 |
< |
vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
| 461 |
> |
vp->vdir[0]*vp->vdist, |
| 462 |
> |
vp->vdir[1]*vp->vdist, |
| 463 |
> |
vp->vdir[2]*vp->vdist); |
| 464 |
|
cp += strlen(cp); |
| 465 |
|
} |
| 466 |
|
if (!VEQ(vp->vup,stdview.vup)) { |
| 500 |
|
isview(s) /* is this a view string? */ |
| 501 |
|
char *s; |
| 502 |
|
{ |
| 503 |
< |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","pinterp",NULL}; |
| 503 |
> |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
| 504 |
|
extern char *progname; |
| 505 |
|
register char *cp; |
| 506 |
|
register char **an; |
| 532 |
|
|
| 533 |
|
|
| 534 |
|
static int |
| 535 |
< |
gethview(s, v) /* get view from header */ |
| 536 |
< |
char *s; |
| 537 |
< |
register struct myview *v; |
| 535 |
> |
gethview( /* get view from header */ |
| 536 |
> |
char *s, |
| 537 |
> |
void *v |
| 538 |
> |
) |
| 539 |
|
{ |
| 540 |
< |
if (isview(s) && sscanview(v->hv, s) > 0) |
| 541 |
< |
v->ok++; |
| 540 |
> |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
| 541 |
> |
((struct myview*)v)->ok++; |
| 542 |
|
return(0); |
| 543 |
|
} |
| 544 |
|
|
| 552 |
|
struct myview mvs; |
| 553 |
|
FILE *fp; |
| 554 |
|
|
| 555 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
| 555 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
| 556 |
> |
fp = stdin; |
| 557 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
| 558 |
|
return(-1); |
| 559 |
|
|
| 560 |
|
mvs.hv = vp; |
