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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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#include "color.h" |
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|
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#include "random.h" |
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#include "resolu.h" |
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|
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#ifndef BSD |
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#define vfork fork |
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#define pscan(y) (ourpict+(y)*hresolu) |
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#define zscan(y) (ourzbuf+(y)*hresolu) |
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|
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#define PMASK 0xfffffff /* probability mask */ |
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#define sampval(x) (long)((x)*(PMASK+1)+.5) |
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#define samp(p) ((p) > (random()&PMASK)) |
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|
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#define F_FORE 1 /* fill foreground */ |
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#define F_BACK 2 /* fill background */ |
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|
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char *progname; |
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|
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int fillo = F_FORE|F_BACK; /* selected fill options */ |
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long sampprob = 0; /* sample probability */ |
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int fillsamp = 0; /* sample separation (0 == inf) */ |
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extern int backfill(), rcalfill(); /* fill functions */ |
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int (*fillfunc)() = backfill; /* selected fill function */ |
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COLR backcolr = BLKCOLR; /* background color */ |
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|
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VIEW theirview = STDVIEW; /* input view */ |
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int gotview; /* got input view? */ |
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int thresolu, tvresolu; /* input resolution */ |
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int wrongformat = 0; /* input in another format? */ |
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RESOLU tresolu; /* input resolution */ |
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double theirexp; /* input picture exposure */ |
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double theirs2ours[4][4]; /* transformation matrix */ |
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int hasmatrix = 0; /* has transformation matrix */ |
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|
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int childpid = -1; /* id of fill process */ |
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FILE *psend, *precv; /* pipes to/from fill calculation */ |
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break; |
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case 's': /* sample */ |
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check(3,1); |
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sampprob = sampval(atof(argv[++i])); |
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> |
fillsamp = atoi(argv[++i]); |
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break; |
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case 'c': /* color */ |
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check(3,3); |
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addpicture(argv[i], argv[i+1]); |
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/* fill in spaces */ |
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if (fillo&F_BACK) |
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backpicture(fillfunc, sampprob); |
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backpicture(fillfunc, fillsamp); |
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else |
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fillpicture(fillfunc); |
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/* close calculation */ |
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fputaspect(pixaspect, stdout); |
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if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
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fputexpos(ourexp, stdout); |
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fputformat(COLRFMT, stdout); |
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putc('\n', stdout); |
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/* write picture */ |
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writepicture(); |
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{ |
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static char *altname[] = {VIEWSTR,"rpict","rview","pinterp",NULL}; |
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register char **an; |
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char fmt[32]; |
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|
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if (isformat(s)) { |
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formatval(fmt, s); |
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wrongformat = strcmp(fmt, COLRFMT); |
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return; |
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} |
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putc('\t', stdout); |
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fputs(s, stdout); |
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|
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theirexp = 1.0; |
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gotview = 0; |
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printf("%s:\n", pfile); |
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getheader(pfp, headline); |
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if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
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!= (YMAJOR|YDECR)) { |
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fprintf(stderr, "%s: picture view error\n", pfile); |
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getheader(pfp, headline, NULL); |
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if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
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fprintf(stderr, "%s: picture format error\n", pfile); |
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exit(1); |
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} |
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if (ourexp <= 0) |
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exit(1); |
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} |
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/* compute transformation */ |
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pixform(theirs2ours, &theirview, &ourview); |
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hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
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/* allocate scanlines */ |
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scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
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zin = (float *)malloc(thresolu*sizeof(float)); |
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plast = (struct position *)calloc(thresolu, sizeof(struct position)); |
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scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
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zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
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plast = (struct position *)calloc(scanlen(&tresolu), |
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sizeof(struct position)); |
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if (scanin == NULL || zin == NULL || plast == NULL) |
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syserror(); |
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/* get z specification or file */ |
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perror(zspec); |
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exit(1); |
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} |
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for (x = 0; x < thresolu; x++) |
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for (x = scanlen(&tresolu); x-- > 0; ) |
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zin[x] = zvalue; |
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} |
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/* load image */ |
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for (y = tvresolu-1; y >= 0; y--) { |
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if (freadcolrs(scanin, thresolu, pfp) < 0) { |
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for (y = 0; y < numscans(&tresolu); y++) { |
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if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
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fprintf(stderr, "%s: read error\n", pfile); |
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exit(1); |
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} |
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if (zfd != -1 && read(zfd,(char *)zin,thresolu*sizeof(float)) |
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< thresolu*sizeof(float)) { |
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if (zfd != -1 && read(zfd,(char *)zin, |
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scanlen(&tresolu)*sizeof(float)) |
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< scanlen(&tresolu)*sizeof(float)) { |
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fprintf(stderr, "%s: read error\n", zspec); |
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exit(1); |
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} |
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{ |
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double m4t[4][4]; |
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|
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if (vw1->type != VT_PER && vw1->type != VT_PAR) |
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return(0); |
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if (vw2->type != VT_PER && vw2->type != VT_PAR) |
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return(0); |
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setident4(xfmat); |
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xfmat[0][0] = vw1->hvec[0]; |
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xfmat[0][1] = vw1->hvec[1]; |
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m4t[2][2] = vw2->vdir[2]; |
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m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
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multmat4(xfmat, xfmat, m4t); |
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return(1); |
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} |
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struct position *lasty; /* input/output */ |
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{ |
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extern double sqrt(); |
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double pos[3]; |
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FVECT pos; |
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struct position lastx, newpos; |
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register int x; |
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|
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lastx.z = 0; |
395 |
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for (x = thresolu-1; x >= 0; x--) { |
396 |
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pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
384 |
< |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
395 |
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for (x = scanlen(&tresolu); x-- > 0; ) { |
396 |
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pix2loc(pos, &tresolu, x, y); |
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pos[2] = zline[x]; |
398 |
< |
if (theirview.type == VT_PER) { |
387 |
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if (normdist) /* adjust for eye-ray distance */ |
388 |
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pos[2] /= sqrt( 1. |
389 |
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+ pos[0]*pos[0]*theirview.hn2 |
390 |
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+ pos[1]*pos[1]*theirview.vn2 ); |
391 |
< |
pos[0] *= pos[2]; |
392 |
< |
pos[1] *= pos[2]; |
393 |
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} |
394 |
< |
multp3(pos, pos, theirs2ours); |
395 |
< |
if (pos[2] <= 0) { |
398 |
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if (movepixel(pos) < 0) { |
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lasty[x].z = lastx.z = 0; /* mark invalid */ |
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continue; |
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} |
399 |
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if (ourview.type == VT_PER) { |
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pos[0] /= pos[2]; |
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pos[1] /= pos[2]; |
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} |
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pos[0] += .5 - ourview.hoff; |
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pos[1] += .5 - ourview.voff; |
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newpos.x = pos[0] * hresolu; |
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newpos.y = pos[1] * vresolu; |
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newpos.z = zline[x]; |
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y1 = p0->y + c1*s1y/l1; |
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for (c2 = l2; c2-- > 0; ) { |
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x = x1 + c2*s2x/l2; |
460 |
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if (x < 0 || x >= hresolu) |
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continue; |
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y = y1 + c2*s2y/l2; |
463 |
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if (y < 0 || y >= vresolu) |
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continue; |
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if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
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> zeps*zscan(y)[x]) { |
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zscan(y)[x] = z; |
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} |
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|
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|
475 |
< |
backpicture(fill, prob) /* background fill algorithm */ |
475 |
> |
movepixel(pos) /* reposition image point */ |
476 |
> |
FVECT pos; |
477 |
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{ |
478 |
> |
FVECT pt, direc; |
479 |
> |
|
480 |
> |
if (pos[2] <= 0) /* empty pixel */ |
481 |
> |
return(-1); |
482 |
> |
if (hasmatrix) { |
483 |
> |
pos[0] += theirview.hoff - .5; |
484 |
> |
pos[1] += theirview.voff - .5; |
485 |
> |
if (theirview.type == VT_PER) { |
486 |
> |
if (normdist) /* adjust for eye-ray distance */ |
487 |
> |
pos[2] /= sqrt( 1. |
488 |
> |
+ pos[0]*pos[0]*theirview.hn2 |
489 |
> |
+ pos[1]*pos[1]*theirview.vn2 ); |
490 |
> |
pos[0] *= pos[2]; |
491 |
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pos[1] *= pos[2]; |
492 |
> |
} |
493 |
> |
multp3(pos, pos, theirs2ours); |
494 |
> |
if (pos[2] <= 0) |
495 |
> |
return(-1); |
496 |
> |
if (ourview.type == VT_PER) { |
497 |
> |
pos[0] /= pos[2]; |
498 |
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pos[1] /= pos[2]; |
499 |
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} |
500 |
> |
pos[0] += .5 - ourview.hoff; |
501 |
> |
pos[1] += .5 - ourview.voff; |
502 |
> |
return(0); |
503 |
> |
} |
504 |
> |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
505 |
> |
return(-1); |
506 |
> |
pt[0] += direc[0]*pos[2]; |
507 |
> |
pt[1] += direc[1]*pos[2]; |
508 |
> |
pt[2] += direc[2]*pos[2]; |
509 |
> |
viewloc(pos, &ourview, pt); |
510 |
> |
if (pos[2] <= 0) |
511 |
> |
return(-1); |
512 |
> |
return(0); |
513 |
> |
} |
514 |
> |
|
515 |
> |
|
516 |
> |
backpicture(fill, samp) /* background fill algorithm */ |
517 |
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int (*fill)(); |
518 |
< |
long prob; |
518 |
> |
int samp; |
519 |
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{ |
520 |
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int *yback, xback; |
521 |
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int y; |
480 |
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COLR pfill; |
522 |
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register int x, i; |
523 |
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/* get back buffer */ |
524 |
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yback = (int *)malloc(hresolu*sizeof(int)); |
565 |
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xback = x-1; |
566 |
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} |
567 |
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/* |
568 |
< |
* Check to see if we have no background for |
569 |
< |
* this pixel. If not, or sampling was |
529 |
< |
* requested, use the given fill function. |
568 |
> |
* If we have no background for this pixel, |
569 |
> |
* use the given fill function. |
570 |
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*/ |
571 |
< |
if ((xback < 0 && yback[x] < 0) || samp(prob)) { |
572 |
< |
(*fill)(x,y); |
533 |
< |
continue; |
534 |
< |
} |
571 |
> |
if (xback < 0 && yback[x] < 0) |
572 |
> |
goto fillit; |
573 |
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/* |
574 |
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* Compare, and use the background that is |
575 |
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* farther, unless one of them is next to us. |
576 |
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* If the background is too distant, call |
577 |
+ |
* the fill function. |
578 |
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*/ |
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if ( yback[x] < 0 |
580 |
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|| (xback >= 0 && ABS(x-xback) <= 1) |
581 |
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|| ( ABS(y-yback[x]) > 1 |
582 |
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&& zscan(yback[x])[x] |
583 |
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< zscan(y)[xback] ) ) { |
584 |
+ |
if (samp > 0 && ABS(x-xback) >= samp) |
585 |
+ |
goto fillit; |
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copycolr(pscan(y)[x],pscan(y)[xback]); |
587 |
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zscan(y)[x] = zscan(y)[xback]; |
588 |
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} else { |
589 |
+ |
if (samp > 0 && ABS(y-yback[x]) > samp) |
590 |
+ |
goto fillit; |
591 |
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copycolr(pscan(y)[x],pscan(yback[x])[x]); |
592 |
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zscan(y)[x] = zscan(yback[x])[x]; |
593 |
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} |
594 |
+ |
continue; |
595 |
+ |
fillit: |
596 |
+ |
(*fill)(x,y); |
597 |
+ |
if (fill == rcalfill) { /* use it */ |
598 |
+ |
clearqueue(); |
599 |
+ |
xback = x; |
600 |
+ |
yback[x] = y; |
601 |
+ |
} |
602 |
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} else { /* full pixel */ |
603 |
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yback[x] = -2; |
604 |
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xback = -2; |
624 |
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{ |
625 |
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int y; |
626 |
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|
627 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
627 |
> |
fprtresolu(hresolu, vresolu, stdout); |
628 |
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for (y = vresolu-1; y >= 0; y--) |
629 |
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if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
630 |
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syserror(); |
651 |
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if (donorm) { |
652 |
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double vx, yzn2; |
653 |
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register int x; |
654 |
< |
yzn2 = y - .5*(vresolu-1); |
654 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
655 |
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yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
656 |
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for (x = 0; x < hresolu; x++) { |
657 |
< |
vx = x - .5*(hresolu-1); |
657 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
658 |
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zout[x] = zscan(y)[x] |
659 |
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* sqrt(vx*vx*ourview.hn2 + yzn2); |
660 |
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} |