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/* Copyright (c) 1994 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 "standard.h" |
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|
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#include <ctype.h> |
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|
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#include "view.h" |
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|
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#include "color.h" |
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|
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#include "resolu.h" |
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|
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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 F_FORE 1 /* fill foreground */ |
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#define F_BACK 2 /* fill background */ |
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|
29 |
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#define PACKSIZ 42 /* calculation packet size */ |
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#define PACKSIZ 256 /* max. calculation packet size */ |
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|
31 |
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#define RTCOM "rtrace -h -ovl -fff -x %d %s" |
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#define RTCOM "rtrace -h- -ovl -fff " |
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|
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#define ABS(x) ((x)>0?(x):-(x)) |
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|
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struct position {int x,y; float z;}; |
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|
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#define NSTEPS 64 /* number steps in overlap prescan */ |
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#define MINSTEP 4 /* minimum worthwhile preview step */ |
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|
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struct bound {int min,max;}; |
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|
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VIEW ourview = STDVIEW; /* desired view */ |
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int hresolu = 512; /* horizontal resolution */ |
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int vresolu = 512; /* vertical resolution */ |
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double pixaspect = 1.0; /* pixel aspect ratio */ |
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|
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double zeps = .02; /* allowed z epsilon */ |
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|
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|
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char *progname; |
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|
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int fill = F_FORE|F_BACK; /* selected fill algorithm */ |
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int fillo = F_FORE|F_BACK; /* selected fill options */ |
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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 (*deffill)() = backfill; /* selected fill function */ |
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int (*fillfunc)() = backfill; /* selected fill function */ |
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COLR backcolr = BLKCOLR; /* background color */ |
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double backz = 0.0; /* background z value */ |
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int normdist = 1; /* normalized distance? */ |
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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? */ |
66 |
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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 */ |
73 |
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int queue[PACKSIZ][2]; /* pending pixels */ |
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int PDesc[3] = {-1,-1,-1}; /* rtrace process descriptor */ |
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#define childpid (PDesc[2]) |
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unsigned short queue[PACKSIZ][2]; /* pending pixels */ |
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int packsiz; /* actual packet size */ |
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int queuesiz; /* number of pixels pending */ |
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|
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|
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int argc; |
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char *argv[]; |
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{ |
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#define check(olen,narg) if (argv[i][olen] || narg >= argc-i) goto badopt |
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extern double atof(); |
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#define check(ol,al) if (argv[i][ol] || \ |
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badarg(argc-i-1,argv+i+1,al)) \ |
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goto badopt |
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int gotvfile = 0; |
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char *zfile = NULL; |
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char *err; |
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} |
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switch (argv[i][1]) { |
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case 't': /* threshold */ |
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check(2,1); |
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check(2,"f"); |
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zeps = atof(argv[++i]); |
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break; |
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case 'n': /* dist. normalized? */ |
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check(2,0); |
104 |
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check(2,NULL); |
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normdist = !normdist; |
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break; |
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case 'f': /* fill type */ |
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switch (argv[i][2]) { |
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case '0': /* none */ |
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check(3,0); |
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fill = 0; |
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check(3,NULL); |
111 |
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fillo = 0; |
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break; |
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case 'f': /* foreground */ |
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check(3,0); |
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fill = F_FORE; |
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check(3,NULL); |
115 |
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fillo = F_FORE; |
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break; |
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case 'b': /* background */ |
118 |
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check(3,0); |
119 |
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fill = F_BACK; |
118 |
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check(3,NULL); |
119 |
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fillo = F_BACK; |
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break; |
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case 'a': /* all */ |
122 |
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check(3,0); |
123 |
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fill = F_FORE|F_BACK; |
122 |
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check(3,NULL); |
123 |
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fillo = F_FORE|F_BACK; |
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break; |
125 |
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case 's': /* sample */ |
126 |
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check(3,"i"); |
127 |
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fillsamp = atoi(argv[++i]); |
128 |
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break; |
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case 'c': /* color */ |
130 |
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check(3,3); |
131 |
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deffill = backfill; |
130 |
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check(3,"fff"); |
131 |
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fillfunc = backfill; |
132 |
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setcolr(backcolr, atof(argv[i+1]), |
133 |
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atof(argv[i+2]), atof(argv[i+3])); |
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i += 3; |
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break; |
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case 'z': /* z value */ |
137 |
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check(3,1); |
138 |
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deffill = backfill; |
137 |
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check(3,"f"); |
138 |
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fillfunc = backfill; |
139 |
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backz = atof(argv[++i]); |
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break; |
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case 'r': /* rtrace */ |
142 |
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check(3,1); |
143 |
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deffill = rcalfill; |
142 |
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check(3,"s"); |
143 |
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fillfunc = rcalfill; |
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calstart(RTCOM, argv[++i]); |
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break; |
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default: |
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} |
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break; |
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case 'z': /* z file */ |
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check(2,1); |
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check(2,"s"); |
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zfile = argv[++i]; |
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break; |
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case 'x': /* x resolution */ |
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check(2,1); |
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check(2,"i"); |
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hresolu = atoi(argv[++i]); |
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break; |
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case 'y': /* y resolution */ |
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check(2,1); |
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check(2,"i"); |
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vresolu = atoi(argv[++i]); |
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break; |
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case 'p': /* pixel aspect */ |
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if (argv[i][2] != 'a') |
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goto badopt; |
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check(3,"f"); |
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pixaspect = atof(argv[++i]); |
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break; |
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case 'v': /* view file */ |
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if (argv[i][2] != 'f') |
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goto badopt; |
171 |
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check(3,1); |
172 |
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gotvfile = viewfile(argv[++i], &ourview); |
173 |
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if (gotvfile < 0) { |
174 |
< |
perror(argv[i]); |
175 |
< |
exit(1); |
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} else if (gotvfile == 0) { |
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check(3,"s"); |
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gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
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if (gotvfile < 0) |
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syserror(argv[i]); |
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else if (gotvfile == 0) { |
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fprintf(stderr, "%s: bad view file\n", |
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argv[i]); |
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exit(1); |
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/* check arguments */ |
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if ((argc-i)%2) |
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goto userr; |
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if (fillsamp == 1) |
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fillo &= ~F_BACK; |
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/* set view */ |
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if (err = setview(&ourview)) { |
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if ((err = setview(&ourview)) != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
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} |
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normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
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/* allocate frame */ |
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ourpict = (COLR *)malloc(hresolu*vresolu*sizeof(COLR)); |
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ourzbuf = (float *)calloc(hresolu*vresolu,sizeof(float)); |
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> |
ourpict = (COLR *)bmalloc(hresolu*vresolu*sizeof(COLR)); |
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ourzbuf = (float *)bmalloc(hresolu*vresolu*sizeof(float)); |
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if (ourpict == NULL || ourzbuf == NULL) |
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syserror(); |
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> |
syserror(progname); |
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> |
bzero((char *)ourzbuf, hresolu*vresolu*sizeof(float)); |
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/* new header */ |
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newheader("RADIANCE", stdout); |
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/* get input */ |
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for ( ; i < argc; i += 2) |
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addpicture(argv[i], argv[i+1]); |
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/* fill in spaces */ |
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if (fill&F_BACK) |
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backpicture(); |
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> |
if (fillo&F_BACK) |
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backpicture(fillfunc, fillsamp); |
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else |
214 |
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fillpicture(); |
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> |
fillpicture(fillfunc); |
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/* close calculation */ |
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caldone(); |
217 |
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/* aft clipping */ |
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clipaft(); |
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/* add to header */ |
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printargs(argc, argv, stdout); |
221 |
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if (gotvfile) { |
222 |
< |
printf(VIEWSTR); |
222 |
> |
fputs(VIEWSTR, stdout); |
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fprintview(&ourview, stdout); |
224 |
< |
printf("\n"); |
224 |
> |
putc('\n', stdout); |
225 |
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} |
226 |
< |
if (ourexp > 0 && ourexp != 1.0) |
226 |
> |
if (pixaspect < .99 || pixaspect > 1.01) |
227 |
> |
fputaspect(pixaspect, stdout); |
228 |
> |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
229 |
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fputexpos(ourexp, stdout); |
230 |
< |
printf("\n"); |
230 |
> |
fputformat(COLRFMT, stdout); |
231 |
> |
putc('\n', stdout); |
232 |
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/* write picture */ |
233 |
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writepicture(); |
234 |
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/* write z file */ |
248 |
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headline(s) /* process header string */ |
249 |
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char *s; |
250 |
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{ |
251 |
< |
static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
215 |
< |
register char **an; |
251 |
> |
char fmt[32]; |
252 |
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|
253 |
< |
printf("\t%s", s); |
253 |
> |
if (isheadid(s)) |
254 |
> |
return; |
255 |
> |
if (formatval(fmt, s)) { |
256 |
> |
wrongformat = strcmp(fmt, COLRFMT); |
257 |
> |
return; |
258 |
> |
} |
259 |
> |
putc('\t', stdout); |
260 |
> |
fputs(s, stdout); |
261 |
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|
262 |
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if (isexpos(s)) { |
263 |
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theirexp *= exposval(s); |
264 |
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return; |
265 |
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} |
266 |
< |
for (an = altname; *an != NULL; an++) |
267 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
225 |
< |
if (sscanview(&theirview, s+strlen(*an)) > 0) |
226 |
< |
gotview++; |
227 |
< |
break; |
228 |
< |
} |
266 |
> |
if (isview(s) && sscanview(&theirview, s) > 0) |
267 |
> |
gotview++; |
268 |
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} |
269 |
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|
270 |
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|
271 |
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addpicture(pfile, zspec) /* add picture to output */ |
272 |
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char *pfile, *zspec; |
273 |
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{ |
274 |
< |
extern double atof(); |
275 |
< |
FILE *pfp, *zfp; |
274 |
> |
FILE *pfp; |
275 |
> |
int zfd; |
276 |
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char *err; |
277 |
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COLR *scanin; |
278 |
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float *zin; |
279 |
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struct position *plast; |
280 |
+ |
struct bound *xlim, ylim; |
281 |
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int y; |
282 |
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/* open picture file */ |
283 |
< |
if ((pfp = fopen(pfile, "r")) == NULL) { |
284 |
< |
perror(pfile); |
245 |
< |
exit(1); |
246 |
< |
} |
283 |
> |
if ((pfp = fopen(pfile, "r")) == NULL) |
284 |
> |
syserror(pfile); |
285 |
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/* get header with exposure and view */ |
286 |
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theirexp = 1.0; |
287 |
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gotview = 0; |
288 |
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printf("%s:\n", pfile); |
289 |
< |
getheader(pfp, headline); |
290 |
< |
if (!gotview || fgetresolu(&thresolu, &tvresolu, pfp) |
291 |
< |
!= (YMAJOR|YDECR)) { |
254 |
< |
fprintf(stderr, "%s: picture view error\n", pfile); |
289 |
> |
getheader(pfp, headline, NULL); |
290 |
> |
if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
291 |
> |
fprintf(stderr, "%s: picture format error\n", pfile); |
292 |
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exit(1); |
293 |
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} |
294 |
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if (ourexp <= 0) |
300 |
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exit(1); |
301 |
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} |
302 |
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/* compute transformation */ |
303 |
< |
pixform(theirs2ours, &theirview, &ourview); |
267 |
< |
/* allocate scanlines */ |
268 |
< |
scanin = (COLR *)malloc(thresolu*sizeof(COLR)); |
269 |
< |
zin = (float *)malloc(thresolu*sizeof(float)); |
270 |
< |
plast = (struct position *)calloc(thresolu, sizeof(struct position)); |
271 |
< |
if (scanin == NULL || zin == NULL || plast == NULL) |
272 |
< |
syserror(); |
303 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
304 |
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/* get z specification or file */ |
305 |
< |
if ((zfp = fopen(zspec, "r")) == NULL) { |
305 |
> |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
306 |
> |
if (zin == NULL) |
307 |
> |
syserror(progname); |
308 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
309 |
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double zvalue; |
310 |
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register int x; |
311 |
< |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
312 |
< |
perror(zspec); |
313 |
< |
exit(1); |
280 |
< |
} |
281 |
< |
for (x = 0; x < thresolu; x++) |
311 |
> |
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) |
312 |
> |
syserror(zspec); |
313 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) |
314 |
|
zin[x] = zvalue; |
315 |
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} |
316 |
< |
/* load image */ |
317 |
< |
for (y = tvresolu-1; y >= 0; y--) { |
318 |
< |
if (freadcolrs(scanin, thresolu, pfp) < 0) { |
316 |
> |
/* compute transferrable perimeter */ |
317 |
> |
xlim = (struct bound *)malloc(numscans(&tresolu)*sizeof(struct bound)); |
318 |
> |
if (xlim == NULL) |
319 |
> |
syserror(progname); |
320 |
> |
if (!getperim(xlim, &ylim, zin, zfd)) { /* overlapping area? */ |
321 |
> |
free((char *)zin); |
322 |
> |
free((char *)xlim); |
323 |
> |
if (zfd != -1) |
324 |
> |
close(zfd); |
325 |
> |
fclose(pfp); |
326 |
> |
return; |
327 |
> |
} |
328 |
> |
/* allocate scanlines */ |
329 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
330 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
331 |
> |
sizeof(struct position)); |
332 |
> |
if (scanin == NULL | plast == NULL) |
333 |
> |
syserror(progname); |
334 |
> |
/* skip to starting point */ |
335 |
> |
for (y = 0; y < ylim.min; y++) |
336 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
337 |
|
fprintf(stderr, "%s: read error\n", pfile); |
338 |
|
exit(1); |
339 |
|
} |
340 |
< |
if (zfp != NULL |
341 |
< |
&& fread(zin,sizeof(float),thresolu,zfp) < thresolu) { |
342 |
< |
fprintf(stderr, "%s: read error\n", zspec); |
340 |
> |
if (zfd != -1 && lseek(zfd, |
341 |
> |
(long)ylim.min*scanlen(&tresolu)*sizeof(float), 0) < 0) |
342 |
> |
syserror(zspec); |
343 |
> |
/* load image */ |
344 |
> |
for (y = ylim.min; y <= ylim.max; y++) { |
345 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
346 |
> |
fprintf(stderr, "%s: read error\n", pfile); |
347 |
|
exit(1); |
348 |
|
} |
349 |
< |
addscanline(y, scanin, zin, plast); |
349 |
> |
if (zfd != -1 && read(zfd, (char *)zin, |
350 |
> |
scanlen(&tresolu)*sizeof(float)) |
351 |
> |
< scanlen(&tresolu)*sizeof(float)) |
352 |
> |
syserror(zspec); |
353 |
> |
addscanline(xlim+y, y, scanin, zin, plast); |
354 |
|
} |
355 |
|
/* clean up */ |
356 |
+ |
free((char *)xlim); |
357 |
|
free((char *)scanin); |
358 |
|
free((char *)zin); |
359 |
|
free((char *)plast); |
360 |
|
fclose(pfp); |
361 |
< |
if (zfp != NULL) |
362 |
< |
fclose(zfp); |
361 |
> |
if (zfd != -1) |
362 |
> |
close(zfd); |
363 |
|
} |
364 |
|
|
365 |
|
|
369 |
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{ |
370 |
|
double m4t[4][4]; |
371 |
|
|
372 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
373 |
+ |
return(0); |
374 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
375 |
+ |
return(0); |
376 |
|
setident4(xfmat); |
377 |
|
xfmat[0][0] = vw1->hvec[0]; |
378 |
|
xfmat[0][1] = vw1->hvec[1]; |
400 |
|
m4t[2][2] = vw2->vdir[2]; |
401 |
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
402 |
|
multmat4(xfmat, xfmat, m4t); |
403 |
+ |
return(1); |
404 |
|
} |
405 |
|
|
406 |
|
|
407 |
< |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
407 |
> |
addscanline(xl, y, pline, zline, lasty) /* add scanline to output */ |
408 |
> |
struct bound *xl; |
409 |
|
int y; |
410 |
|
COLR *pline; |
411 |
|
float *zline; |
412 |
|
struct position *lasty; /* input/output */ |
413 |
|
{ |
414 |
< |
extern double sqrt(); |
350 |
< |
double pos[3]; |
414 |
> |
FVECT pos; |
415 |
|
struct position lastx, newpos; |
416 |
|
register int x; |
417 |
|
|
418 |
< |
for (x = thresolu-1; x >= 0; x--) { |
419 |
< |
pos[0] = (x+.5)/thresolu + theirview.hoff - .5; |
420 |
< |
pos[1] = (y+.5)/tvresolu + theirview.voff - .5; |
418 |
> |
lastx.z = 0; |
419 |
> |
for (x = xl->max; x >= xl->min; x--) { |
420 |
> |
pix2loc(pos, &tresolu, x, y); |
421 |
|
pos[2] = zline[x]; |
422 |
< |
if (theirview.type == VT_PER) { |
359 |
< |
if (normdist) /* adjust for eye-ray distance */ |
360 |
< |
pos[2] /= sqrt( 1. |
361 |
< |
+ pos[0]*pos[0]*theirview.hn2 |
362 |
< |
+ pos[1]*pos[1]*theirview.vn2 ); |
363 |
< |
pos[0] *= pos[2]; |
364 |
< |
pos[1] *= pos[2]; |
365 |
< |
} |
366 |
< |
multp3(pos, pos, theirs2ours); |
367 |
< |
if (pos[2] <= 0) { |
422 |
> |
if (movepixel(pos) < 0) { |
423 |
|
lasty[x].z = lastx.z = 0; /* mark invalid */ |
424 |
|
continue; |
425 |
|
} |
371 |
– |
if (ourview.type == VT_PER) { |
372 |
– |
pos[0] /= pos[2]; |
373 |
– |
pos[1] /= pos[2]; |
374 |
– |
} |
375 |
– |
pos[0] += .5 - ourview.hoff; |
376 |
– |
pos[1] += .5 - ourview.voff; |
426 |
|
newpos.x = pos[0] * hresolu; |
427 |
|
newpos.y = pos[1] * vresolu; |
428 |
|
newpos.z = zline[x]; |
452 |
|
register int x, y; /* final position */ |
453 |
|
|
454 |
|
/* compute vector p0p1 */ |
455 |
< |
if (fill&F_FORE && ABS(p1->z-p0->z) <= zt) { |
455 |
> |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
456 |
|
s1x = p1->x - p0->x; |
457 |
|
s1y = p1->y - p0->y; |
458 |
|
l1 = ABS(s1x); |
463 |
|
p1isy = -1; |
464 |
|
} |
465 |
|
/* compute vector p0p2 */ |
466 |
< |
if (fill&F_FORE && ABS(p2->z-p0->z) <= zt) { |
466 |
> |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
467 |
|
s2x = p2->x - p0->x; |
468 |
|
s2y = p2->y - p0->y; |
469 |
|
if (p1isy == 1) |
481 |
|
y1 = p0->y + c1*s1y/l1; |
482 |
|
for (c2 = l2; c2-- > 0; ) { |
483 |
|
x = x1 + c2*s2x/l2; |
484 |
+ |
if (x < 0 || x >= hresolu) |
485 |
+ |
continue; |
486 |
|
y = y1 + c2*s2y/l2; |
487 |
+ |
if (y < 0 || y >= vresolu) |
488 |
+ |
continue; |
489 |
|
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
490 |
|
> zeps*zscan(y)[x]) { |
491 |
|
zscan(y)[x] = z; |
496 |
|
} |
497 |
|
|
498 |
|
|
499 |
< |
backpicture() /* background fill algorithm */ |
499 |
> |
movepixel(pos) /* reposition image point */ |
500 |
> |
FVECT pos; |
501 |
|
{ |
502 |
+ |
double d0, d1; |
503 |
+ |
FVECT pt, direc; |
504 |
+ |
|
505 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
506 |
+ |
return(-1); |
507 |
+ |
if (normdist && theirview.type == VT_PER) { /* adjust distance */ |
508 |
+ |
d0 = pos[0] + theirview.hoff - .5; |
509 |
+ |
d1 = pos[1] + theirview.voff - .5; |
510 |
+ |
pos[2] /= sqrt(1. + d0*d0*theirview.hn2 + d1*d1*theirview.vn2); |
511 |
+ |
} |
512 |
+ |
if (hasmatrix) { |
513 |
+ |
pos[0] += theirview.hoff - .5; |
514 |
+ |
pos[1] += theirview.voff - .5; |
515 |
+ |
if (theirview.type == VT_PER) { |
516 |
+ |
pos[0] *= pos[2]; |
517 |
+ |
pos[1] *= pos[2]; |
518 |
+ |
} |
519 |
+ |
multp3(pos, pos, theirs2ours); |
520 |
+ |
if (pos[2] <= 0) |
521 |
+ |
return(-1); |
522 |
+ |
if (ourview.type == VT_PER) { |
523 |
+ |
pos[0] /= pos[2]; |
524 |
+ |
pos[1] /= pos[2]; |
525 |
+ |
} |
526 |
+ |
pos[0] += .5 - ourview.hoff; |
527 |
+ |
pos[1] += .5 - ourview.voff; |
528 |
+ |
return(0); |
529 |
+ |
} |
530 |
+ |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < -FTINY) |
531 |
+ |
return(-1); |
532 |
+ |
pt[0] += direc[0]*pos[2]; |
533 |
+ |
pt[1] += direc[1]*pos[2]; |
534 |
+ |
pt[2] += direc[2]*pos[2]; |
535 |
+ |
viewloc(pos, &ourview, pt); |
536 |
+ |
if (pos[2] <= 0) |
537 |
+ |
return(-1); |
538 |
+ |
return(0); |
539 |
+ |
} |
540 |
+ |
|
541 |
+ |
|
542 |
+ |
getperim(xl, yl, zline, zfd) /* compute overlapping image area */ |
543 |
+ |
register struct bound *xl; |
544 |
+ |
struct bound *yl; |
545 |
+ |
float *zline; |
546 |
+ |
int zfd; |
547 |
+ |
{ |
548 |
+ |
int step; |
549 |
+ |
FVECT pos; |
550 |
+ |
register int x, y; |
551 |
+ |
/* set up step size */ |
552 |
+ |
if (scanlen(&tresolu) < numscans(&tresolu)) |
553 |
+ |
step = scanlen(&tresolu)/NSTEPS; |
554 |
+ |
else |
555 |
+ |
step = numscans(&tresolu)/NSTEPS; |
556 |
+ |
if (step < MINSTEP) { /* not worth cropping? */ |
557 |
+ |
yl->min = 0; |
558 |
+ |
yl->max = numscans(&tresolu) - 1; |
559 |
+ |
x = scanlen(&tresolu) - 1; |
560 |
+ |
for (y = numscans(&tresolu); y--; ) { |
561 |
+ |
xl[y].min = 0; |
562 |
+ |
xl[y].max = x; |
563 |
+ |
} |
564 |
+ |
return(1); |
565 |
+ |
} |
566 |
+ |
yl->min = 32000; yl->max = 0; /* search for points on image */ |
567 |
+ |
for (y = step - 1; y < numscans(&tresolu); y += step) { |
568 |
+ |
if (zfd != -1) { |
569 |
+ |
if (lseek(zfd, (long)y*scanlen(&tresolu)*sizeof(float), |
570 |
+ |
0) < 0) |
571 |
+ |
syserror("lseek"); |
572 |
+ |
if (read(zfd, (char *)zline, |
573 |
+ |
scanlen(&tresolu)*sizeof(float)) |
574 |
+ |
< scanlen(&tresolu)*sizeof(float)) |
575 |
+ |
syserror("read"); |
576 |
+ |
} |
577 |
+ |
xl[y].min = 32000; xl[y].max = 0; /* x max */ |
578 |
+ |
for (x = scanlen(&tresolu); (x -= step) > 0; ) { |
579 |
+ |
pix2loc(pos, &tresolu, x, y); |
580 |
+ |
pos[2] = zline[x]; |
581 |
+ |
if (movepixel(pos) == 0 && pos[0] >= 0 && |
582 |
+ |
pos[0] < 1 && pos[1] >= 0 && |
583 |
+ |
pos[1] < 1) { |
584 |
+ |
xl[y].max = x + step - 1; |
585 |
+ |
xl[y].min = x - step + 1; /* x min */ |
586 |
+ |
if (xl[y].min < 0) |
587 |
+ |
xl[y].min = 0; |
588 |
+ |
for (x = step - 1; x < xl[y].max; x += step) { |
589 |
+ |
pix2loc(pos, &tresolu, x, y); |
590 |
+ |
pos[2] = zline[x]; |
591 |
+ |
if (movepixel(pos) == 0 && |
592 |
+ |
pos[0] >= 0 && |
593 |
+ |
pos[0] < 1 && |
594 |
+ |
pos[1] >= 0 && |
595 |
+ |
pos[1] < 1) { |
596 |
+ |
xl[y].min = x - step + 1; |
597 |
+ |
break; |
598 |
+ |
} |
599 |
+ |
} |
600 |
+ |
if (y < yl->min) /* y limits */ |
601 |
+ |
yl->min = y - step + 1; |
602 |
+ |
yl->max = y + step - 1; |
603 |
+ |
break; |
604 |
+ |
} |
605 |
+ |
} |
606 |
+ |
/* fill in between */ |
607 |
+ |
if (y < step) { |
608 |
+ |
xl[y-1].min = xl[y].min; |
609 |
+ |
xl[y-1].max = xl[y].max; |
610 |
+ |
} else { |
611 |
+ |
if (xl[y].min < xl[y-step].min) |
612 |
+ |
xl[y-1].min = xl[y].min; |
613 |
+ |
else |
614 |
+ |
xl[y-1].min = xl[y-step].min; |
615 |
+ |
if (xl[y].max > xl[y-step].max) |
616 |
+ |
xl[y-1].max = xl[y].max; |
617 |
+ |
else |
618 |
+ |
xl[y-1].max = xl[y-step].max; |
619 |
+ |
} |
620 |
+ |
for (x = 2; x < step; x++) |
621 |
+ |
copystruct(xl+y-x, xl+y-1); |
622 |
+ |
} |
623 |
+ |
if (yl->max >= numscans(&tresolu)) |
624 |
+ |
yl->max = numscans(&tresolu) - 1; |
625 |
+ |
for (x = numscans(&tresolu) - 1; x > y; x--) /* fill bottom rows */ |
626 |
+ |
copystruct(xl+x, xl+y); |
627 |
+ |
return(yl->max >= yl->min); |
628 |
+ |
} |
629 |
+ |
|
630 |
+ |
|
631 |
+ |
backpicture(fill, samp) /* background fill algorithm */ |
632 |
+ |
int (*fill)(); |
633 |
+ |
int samp; |
634 |
+ |
{ |
635 |
|
int *yback, xback; |
636 |
|
int y; |
450 |
– |
COLR pfill; |
637 |
|
register int x, i; |
638 |
|
/* get back buffer */ |
639 |
|
yback = (int *)malloc(hresolu*sizeof(int)); |
640 |
|
if (yback == NULL) |
641 |
< |
syserror(); |
641 |
> |
syserror(progname); |
642 |
|
for (x = 0; x < hresolu; x++) |
643 |
|
yback[x] = -2; |
644 |
|
/* |
680 |
|
xback = x-1; |
681 |
|
} |
682 |
|
/* |
683 |
< |
* Check to see if we have no background for |
684 |
< |
* this pixel. If not, use background color. |
683 |
> |
* If we have no background for this pixel, |
684 |
> |
* use the given fill function. |
685 |
|
*/ |
686 |
< |
if (xback < 0 && yback[x] < 0) { |
687 |
< |
(*deffill)(x,y); |
502 |
< |
continue; |
503 |
< |
} |
686 |
> |
if (xback < 0 && yback[x] < 0) |
687 |
> |
goto fillit; |
688 |
|
/* |
689 |
|
* Compare, and use the background that is |
690 |
|
* farther, unless one of them is next to us. |
691 |
+ |
* If the background is too distant, call |
692 |
+ |
* the fill function. |
693 |
|
*/ |
694 |
|
if ( yback[x] < 0 |
695 |
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
696 |
|
|| ( ABS(y-yback[x]) > 1 |
697 |
|
&& zscan(yback[x])[x] |
698 |
|
< zscan(y)[xback] ) ) { |
699 |
+ |
if (samp > 0 && ABS(x-xback) >= samp) |
700 |
+ |
goto fillit; |
701 |
|
copycolr(pscan(y)[x],pscan(y)[xback]); |
702 |
|
zscan(y)[x] = zscan(y)[xback]; |
703 |
|
} else { |
704 |
+ |
if (samp > 0 && ABS(y-yback[x]) > samp) |
705 |
+ |
goto fillit; |
706 |
|
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
707 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
708 |
|
} |
709 |
+ |
continue; |
710 |
+ |
fillit: |
711 |
+ |
(*fill)(x,y); |
712 |
+ |
if (fill == rcalfill) { /* use it */ |
713 |
+ |
clearqueue(); |
714 |
+ |
xback = x; |
715 |
+ |
yback[x] = y; |
716 |
+ |
} |
717 |
|
} else { /* full pixel */ |
718 |
|
yback[x] = -2; |
719 |
|
xback = -2; |
723 |
|
} |
724 |
|
|
725 |
|
|
726 |
< |
fillpicture() /* paint in empty pixels with default */ |
726 |
> |
fillpicture(fill) /* paint in empty pixels using fill */ |
727 |
> |
int (*fill)(); |
728 |
|
{ |
729 |
|
register int x, y; |
730 |
|
|
731 |
|
for (y = 0; y < vresolu; y++) |
732 |
|
for (x = 0; x < hresolu; x++) |
733 |
|
if (zscan(y)[x] <= 0) |
734 |
< |
(*deffill)(x,y); |
734 |
> |
(*fill)(x,y); |
735 |
|
} |
736 |
|
|
737 |
|
|
738 |
+ |
clipaft() /* perform aft clipping as indicated */ |
739 |
+ |
{ |
740 |
+ |
register int x, y; |
741 |
+ |
double tstdist; |
742 |
+ |
double yzn2, vx; |
743 |
+ |
|
744 |
+ |
if (ourview.vaft <= FTINY) |
745 |
+ |
return; |
746 |
+ |
tstdist = ourview.vaft - ourview.vfore; |
747 |
+ |
for (y = 0; y < vresolu; y++) { |
748 |
+ |
if (ourview.type == VT_PER) { /* adjust distance */ |
749 |
+ |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
750 |
+ |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
751 |
+ |
tstdist = (ourview.vaft - ourview.vfore)*sqrt(yzn2); |
752 |
+ |
} |
753 |
+ |
for (x = 0; x < hresolu; x++) |
754 |
+ |
if (zscan(y)[x] > tstdist) { |
755 |
+ |
if (ourview.type == VT_PER) { |
756 |
+ |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
757 |
+ |
if (zscan(y)[x] <= (ourview.vaft - |
758 |
+ |
ourview.vfore) * |
759 |
+ |
sqrt(vx*vx*ourview.hn2 + yzn2)) |
760 |
+ |
continue; |
761 |
+ |
} |
762 |
+ |
bzero(pscan(y)[x], sizeof(COLR)); |
763 |
+ |
zscan(y)[x] = 0.0; |
764 |
+ |
} |
765 |
+ |
} |
766 |
+ |
} |
767 |
+ |
|
768 |
+ |
|
769 |
|
writepicture() /* write out picture */ |
770 |
|
{ |
771 |
|
int y; |
772 |
|
|
773 |
< |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, stdout); |
773 |
> |
fprtresolu(hresolu, vresolu, stdout); |
774 |
|
for (y = vresolu-1; y >= 0; y--) |
775 |
|
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
776 |
< |
syserror(); |
776 |
> |
syserror(progname); |
777 |
|
} |
778 |
|
|
779 |
|
|
780 |
|
writedistance(fname) /* write out z file */ |
781 |
|
char *fname; |
782 |
|
{ |
553 |
– |
extern double sqrt(); |
783 |
|
int donorm = normdist && ourview.type == VT_PER; |
784 |
< |
FILE *fp; |
784 |
> |
int fd; |
785 |
|
int y; |
786 |
|
float *zout; |
787 |
|
|
788 |
< |
if ((fp = fopen(fname, "w")) == NULL) { |
789 |
< |
perror(fname); |
561 |
< |
exit(1); |
562 |
< |
} |
788 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) |
789 |
> |
syserror(fname); |
790 |
|
if (donorm |
791 |
|
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
792 |
< |
syserror(); |
792 |
> |
syserror(progname); |
793 |
|
for (y = vresolu-1; y >= 0; y--) { |
794 |
|
if (donorm) { |
795 |
|
double vx, yzn2; |
796 |
|
register int x; |
797 |
< |
yzn2 = y - .5*(vresolu-1); |
797 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
798 |
|
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
799 |
|
for (x = 0; x < hresolu; x++) { |
800 |
< |
vx = x - .5*(hresolu-1); |
800 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
801 |
|
zout[x] = zscan(y)[x] |
802 |
|
* sqrt(vx*vx*ourview.hn2 + yzn2); |
803 |
|
} |
804 |
|
} else |
805 |
|
zout = zscan(y); |
806 |
< |
if (fwrite(zout, sizeof(float), hresolu, fp) < hresolu) { |
807 |
< |
perror(fname); |
808 |
< |
exit(1); |
582 |
< |
} |
806 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
807 |
> |
< hresolu*sizeof(float)) |
808 |
> |
syserror(fname); |
809 |
|
} |
810 |
|
if (donorm) |
811 |
|
free((char *)zout); |
812 |
< |
fclose(fp); |
812 |
> |
close(fd); |
813 |
|
} |
814 |
|
|
815 |
|
|
834 |
|
} |
835 |
|
|
836 |
|
|
837 |
< |
calstart(prog, args) /* start fill calculation */ |
837 |
> |
calstart(prog, args) /* start fill calculation */ |
838 |
|
char *prog, *args; |
839 |
|
{ |
840 |
|
char combuf[512]; |
841 |
< |
int p0[2], p1[2]; |
841 |
> |
char *argv[64]; |
842 |
> |
int rval; |
843 |
> |
register char **wp, *cp; |
844 |
|
|
845 |
|
if (childpid != -1) { |
846 |
|
fprintf(stderr, "%s: too many calculations\n", progname); |
847 |
|
exit(1); |
848 |
|
} |
849 |
< |
sprintf(combuf, prog, PACKSIZ, args); |
850 |
< |
if (pipe(p0) < 0 || pipe(p1) < 0) |
851 |
< |
syserror(); |
852 |
< |
if ((childpid = vfork()) == 0) { /* fork calculation */ |
853 |
< |
close(p0[1]); |
854 |
< |
close(p1[0]); |
855 |
< |
if (p0[0] != 0) { |
856 |
< |
dup2(p0[0], 0); |
857 |
< |
close(p0[0]); |
858 |
< |
} |
859 |
< |
if (p1[1] != 1) { |
860 |
< |
dup2(p1[1], 1); |
633 |
< |
close(p1[1]); |
634 |
< |
} |
635 |
< |
execl("/bin/sh", "sh", "-c", combuf, 0); |
636 |
< |
perror("/bin/sh"); |
637 |
< |
_exit(127); |
849 |
> |
strcpy(combuf, prog); |
850 |
> |
strcat(combuf, args); |
851 |
> |
cp = combuf; |
852 |
> |
wp = argv; |
853 |
> |
for ( ; ; ) { |
854 |
> |
while (isspace(*cp)) /* nullify spaces */ |
855 |
> |
*cp++ = '\0'; |
856 |
> |
if (!*cp) /* all done? */ |
857 |
> |
break; |
858 |
> |
*wp++ = cp; /* add argument to list */ |
859 |
> |
while (*++cp && !isspace(*cp)) |
860 |
> |
; |
861 |
|
} |
862 |
< |
if (childpid == -1) |
863 |
< |
syserror(); |
864 |
< |
close(p0[0]); |
865 |
< |
close(p1[1]); |
866 |
< |
if ((psend = fdopen(p0[1], "w")) == NULL) |
867 |
< |
syserror(); |
868 |
< |
if ((precv = fdopen(p1[0], "r")) == NULL) |
869 |
< |
syserror(); |
862 |
> |
*wp = NULL; |
863 |
> |
/* start process */ |
864 |
> |
if ((rval = open_process(PDesc, argv)) < 0) |
865 |
> |
syserror(progname); |
866 |
> |
if (rval == 0) { |
867 |
> |
fprintf(stderr, "%s: command not found\n", argv[0]); |
868 |
> |
exit(1); |
869 |
> |
} |
870 |
> |
packsiz = rval/(6*sizeof(float)) - 1; |
871 |
> |
if (packsiz > PACKSIZ) |
872 |
> |
packsiz = PACKSIZ; |
873 |
|
queuesiz = 0; |
874 |
|
} |
875 |
|
|
876 |
|
|
877 |
< |
caldone() /* done with calculation */ |
877 |
> |
caldone() /* done with calculation */ |
878 |
|
{ |
653 |
– |
int pid; |
654 |
– |
|
879 |
|
if (childpid == -1) |
880 |
|
return; |
657 |
– |
if (fclose(psend) == EOF) |
658 |
– |
syserror(); |
881 |
|
clearqueue(); |
882 |
< |
fclose(precv); |
661 |
< |
while ((pid = wait(0)) != -1 && pid != childpid) |
662 |
< |
; |
882 |
> |
close_process(PDesc); |
883 |
|
childpid = -1; |
884 |
|
} |
885 |
|
|
887 |
|
rcalfill(x, y) /* fill with ray-calculated pixel */ |
888 |
|
int x, y; |
889 |
|
{ |
890 |
< |
FVECT orig, dir; |
671 |
< |
float outbuf[6]; |
672 |
< |
|
673 |
< |
if (queuesiz >= PACKSIZ) { /* flush queue */ |
674 |
< |
if (fflush(psend) == EOF) |
675 |
< |
syserror(); |
890 |
> |
if (queuesiz >= packsiz) /* flush queue if needed */ |
891 |
|
clearqueue(); |
892 |
< |
} |
678 |
< |
/* send new ray */ |
679 |
< |
viewray(orig, dir, &ourview, (x+.5)/hresolu, (y+.5)/vresolu); |
680 |
< |
outbuf[0] = orig[0]; outbuf[1] = orig[1]; outbuf[2] = orig[2]; |
681 |
< |
outbuf[3] = dir[0]; outbuf[4] = dir[1]; outbuf[5] = dir[2]; |
682 |
< |
if (fwrite(outbuf, sizeof(float), 6, psend) < 6) |
683 |
< |
syserror(); |
684 |
< |
/* remember it */ |
892 |
> |
/* add position to queue */ |
893 |
|
queue[queuesiz][0] = x; |
894 |
|
queue[queuesiz][1] = y; |
895 |
|
queuesiz++; |
896 |
|
} |
897 |
|
|
898 |
|
|
899 |
< |
clearqueue() /* get results from queue */ |
899 |
> |
clearqueue() /* process queue */ |
900 |
|
{ |
901 |
< |
float inbuf[4]; |
901 |
> |
FVECT orig, dir; |
902 |
> |
float fbuf[6*(PACKSIZ+1)]; |
903 |
> |
register float *fbp; |
904 |
|
register int i; |
905 |
|
|
906 |
+ |
if (queuesiz == 0) |
907 |
+ |
return; |
908 |
+ |
fbp = fbuf; |
909 |
|
for (i = 0; i < queuesiz; i++) { |
910 |
< |
if (fread(inbuf, sizeof(float), 4, precv) < 4) { |
911 |
< |
fprintf(stderr, "%s: read error in clearqueue\n", |
912 |
< |
progname); |
913 |
< |
exit(1); |
914 |
< |
} |
910 |
> |
viewray(orig, dir, &ourview, |
911 |
> |
(queue[i][0]+.5)/hresolu, |
912 |
> |
(queue[i][1]+.5)/vresolu); |
913 |
> |
*fbp++ = orig[0]; *fbp++ = orig[1]; *fbp++ = orig[2]; |
914 |
> |
*fbp++ = dir[0]; *fbp++ = dir[1]; *fbp++ = dir[2]; |
915 |
> |
} |
916 |
> |
/* mark end and get results */ |
917 |
> |
bzero((char *)fbp, 6*sizeof(float)); |
918 |
> |
if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*queuesiz, |
919 |
> |
6*sizeof(float)*(queuesiz+1)) != |
920 |
> |
4*sizeof(float)*queuesiz) { |
921 |
> |
fprintf(stderr, "%s: error reading from rtrace process\n", |
922 |
> |
progname); |
923 |
> |
exit(1); |
924 |
> |
} |
925 |
> |
fbp = fbuf; |
926 |
> |
for (i = 0; i < queuesiz; i++) { |
927 |
|
if (ourexp > 0 && ourexp != 1.0) { |
928 |
< |
inbuf[0] *= ourexp; |
929 |
< |
inbuf[1] *= ourexp; |
930 |
< |
inbuf[2] *= ourexp; |
928 |
> |
fbp[0] *= ourexp; |
929 |
> |
fbp[1] *= ourexp; |
930 |
> |
fbp[2] *= ourexp; |
931 |
|
} |
932 |
|
setcolr(pscan(queue[i][1])[queue[i][0]], |
933 |
< |
inbuf[0], inbuf[1], inbuf[2]); |
934 |
< |
zscan(queue[i][1])[queue[i][0]] = inbuf[3]; |
933 |
> |
fbp[0], fbp[1], fbp[2]); |
934 |
> |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
935 |
> |
fbp += 4; |
936 |
|
} |
937 |
|
queuesiz = 0; |
938 |
|
} |
939 |
|
|
940 |
|
|
941 |
< |
syserror() /* report error and exit */ |
941 |
> |
syserror(s) /* report error and exit */ |
942 |
> |
char *s; |
943 |
|
{ |
944 |
< |
perror(progname); |
944 |
> |
perror(s); |
945 |
|
exit(1); |
946 |
|
} |