57 |
|
|
58 |
|
VIEW theirview = STDVIEW; /* input view */ |
59 |
|
int gotview; /* got input view? */ |
60 |
+ |
int wrongformat = 0; /* input in another format? */ |
61 |
|
int thresolu, tvresolu; /* input resolution */ |
62 |
|
double theirexp; /* input picture exposure */ |
63 |
|
double theirs2ours[4][4]; /* transformation matrix */ |
64 |
+ |
int hasmatrix = 0; /* has transformation matrix */ |
65 |
|
|
66 |
|
int childpid = -1; /* id of fill process */ |
67 |
|
FILE *psend, *precv; /* pipes to/from fill calculation */ |
212 |
|
fputaspect(pixaspect, stdout); |
213 |
|
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
214 |
|
fputexpos(ourexp, stdout); |
215 |
+ |
fputformat(COLRFMT, stdout); |
216 |
|
putc('\n', stdout); |
217 |
|
/* write picture */ |
218 |
|
writepicture(); |
235 |
|
{ |
236 |
|
static char *altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL}; |
237 |
|
register char **an; |
238 |
+ |
char fmt[32]; |
239 |
|
|
240 |
+ |
if (isformat(s)) { |
241 |
+ |
formatval(fmt, s); |
242 |
+ |
wrongformat = strcmp(fmt, COLRFMT); |
243 |
+ |
return; |
244 |
+ |
} |
245 |
|
putc('\t', stdout); |
246 |
|
fputs(s, stdout); |
247 |
|
|
278 |
|
theirexp = 1.0; |
279 |
|
gotview = 0; |
280 |
|
printf("%s:\n", pfile); |
281 |
< |
getheader(pfp, headline); |
282 |
< |
if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
283 |
< |
!= (YMAJOR|YDECR)) { |
284 |
< |
fprintf(stderr, "%s: picture view error\n", pfile); |
281 |
> |
getheader(pfp, headline, NULL); |
282 |
> |
if (wrongformat || !gotview || |
283 |
> |
fgetresolu(&thresolu, &tvresolu, pfp) != (YMAJOR|YDECR)) { |
284 |
> |
|
285 |
> |
fprintf(stderr, "%s: picture format error\n", pfile); |
286 |
|
exit(1); |
287 |
|
} |
288 |
|
if (ourexp <= 0) |
294 |
|
exit(1); |
295 |
|
} |
296 |
|
/* compute transformation */ |
297 |
< |
pixform(theirs2ours, &theirview, &ourview); |
297 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
298 |
|
/* allocate scanlines */ |
299 |
|
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
300 |
|
zin = (float *)malloc(thresolu*sizeof(float)); |
341 |
|
{ |
342 |
|
double m4t[4][4]; |
343 |
|
|
344 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
345 |
+ |
return(0); |
346 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
347 |
+ |
return(0); |
348 |
|
setident4(xfmat); |
349 |
|
xfmat[0][0] = vw1->hvec[0]; |
350 |
|
xfmat[0][1] = vw1->hvec[1]; |
372 |
|
m4t[2][2] = vw2->vdir[2]; |
373 |
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
374 |
|
multmat4(xfmat, xfmat, m4t); |
375 |
+ |
return(1); |
376 |
|
} |
377 |
|
|
378 |
|
|
383 |
|
struct position *lasty; /* input/output */ |
384 |
|
{ |
385 |
|
extern double sqrt(); |
386 |
< |
double pos[3]; |
386 |
> |
FVECT pos; |
387 |
|
struct position lastx, newpos; |
388 |
|
register int x; |
389 |
|
|
390 |
|
lastx.z = 0; |
391 |
|
for (x = thresolu-1; x >= 0; x--) { |
392 |
< |
pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
393 |
< |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
392 |
> |
pos[0] = (x+.5)/thresolu; |
393 |
> |
pos[1] = (y+.5)/tvresolu; |
394 |
|
pos[2] = zline[x]; |
395 |
< |
if (theirview.type == VT_PER) { |
381 |
< |
if (normdist) /* adjust for eye-ray distance */ |
382 |
< |
pos[2] /= sqrt( 1. |
383 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
384 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
385 |
< |
pos[0] *= pos[2]; |
386 |
< |
pos[1] *= pos[2]; |
387 |
< |
} |
388 |
< |
multp3(pos, pos, theirs2ours); |
389 |
< |
if (pos[2] <= 0) { |
395 |
> |
if (movepixel(pos) < 0) { |
396 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
397 |
|
continue; |
398 |
|
} |
393 |
– |
if (ourview.type == VT_PER) { |
394 |
– |
pos[0] /= pos[2]; |
395 |
– |
pos[1] /= pos[2]; |
396 |
– |
} |
397 |
– |
pos[0] += .5 - ourview.hoff; |
398 |
– |
pos[1] += .5 - ourview.voff; |
399 |
|
newpos.x = pos[0] * hresolu; |
400 |
|
newpos.y = pos[1] * vresolu; |
401 |
|
newpos.z = zline[x]; |
454 |
|
y1 = p0->y + c1*s1y/l1; |
455 |
|
for (c2 = l2; c2-- > 0; ) { |
456 |
|
x = x1 + c2*s2x/l2; |
457 |
+ |
if (x < 0 || x >= hresolu) |
458 |
+ |
continue; |
459 |
|
y = y1 + c2*s2y/l2; |
460 |
+ |
if (y < 0 || y >= vresolu) |
461 |
+ |
continue; |
462 |
|
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
463 |
|
> zeps*zscan(y)[x]) { |
464 |
|
zscan(y)[x] = z; |
469 |
|
} |
470 |
|
|
471 |
|
|
472 |
+ |
movepixel(pos) /* reposition image point */ |
473 |
+ |
FVECT pos; |
474 |
+ |
{ |
475 |
+ |
FVECT pt, direc; |
476 |
+ |
|
477 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
478 |
+ |
return(-1); |
479 |
+ |
if (hasmatrix) { |
480 |
+ |
pos[0] += theirview.hoff - .5; |
481 |
+ |
pos[1] += theirview.voff - .5; |
482 |
+ |
if (theirview.type == VT_PER) { |
483 |
+ |
if (normdist) /* adjust for eye-ray distance */ |
484 |
+ |
pos[2] /= sqrt( 1. |
485 |
+ |
+ pos[0]*pos[0]*theirview.hn2 |
486 |
+ |
+ pos[1]*pos[1]*theirview.vn2 ); |
487 |
+ |
pos[0] *= pos[2]; |
488 |
+ |
pos[1] *= pos[2]; |
489 |
+ |
} |
490 |
+ |
multp3(pos, pos, theirs2ours); |
491 |
+ |
if (pos[2] <= 0) |
492 |
+ |
return(-1); |
493 |
+ |
if (ourview.type == VT_PER) { |
494 |
+ |
pos[0] /= pos[2]; |
495 |
+ |
pos[1] /= pos[2]; |
496 |
+ |
} |
497 |
+ |
pos[0] += .5 - ourview.hoff; |
498 |
+ |
pos[1] += .5 - ourview.voff; |
499 |
+ |
return(0); |
500 |
+ |
} |
501 |
+ |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
502 |
+ |
return(-1); |
503 |
+ |
pt[0] += direc[0]*pos[2]; |
504 |
+ |
pt[1] += direc[1]*pos[2]; |
505 |
+ |
pt[2] += direc[2]*pos[2]; |
506 |
+ |
viewpixel(&pos[0], &pos[1], &pos[2], &ourview, pt); |
507 |
+ |
if (pos[2] <= 0) |
508 |
+ |
return(-1); |
509 |
+ |
return(0); |
510 |
+ |
} |
511 |
+ |
|
512 |
+ |
|
513 |
|
backpicture(fill, samp) /* background fill algorithm */ |
514 |
|
int (*fill)(); |
515 |
|
int samp; |
516 |
|
{ |
517 |
|
int *yback, xback; |
518 |
|
int y; |
474 |
– |
COLR pfill; |
519 |
|
register int x, i; |
520 |
|
/* get back buffer */ |
521 |
|
yback = (int *)malloc(hresolu*sizeof(int)); |
648 |
|
if (donorm) { |
649 |
|
double vx, yzn2; |
650 |
|
register int x; |
651 |
< |
yzn2 = y - .5*(vresolu-1); |
651 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
652 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
653 |
|
for (x = 0; x < hresolu; x++) { |
654 |
< |
vx = x - .5*(hresolu-1); |
654 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
655 |
|
zout[x] = zscan(y)[x] |
656 |
|
* sqrt(vx*vx*ourview.hn2 + yzn2); |
657 |
|
} |