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/* Copyright (c) 1991 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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#include "standard.h" |
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|
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#include <fcntl.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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|
23 |
< |
#define pscan(y) (ourpict+(y)*ourview.hresolu) |
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< |
#define zscan(y) (ourzbuf+(y)*ourview.hresolu) |
23 |
> |
#include "resolu.h" |
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|
25 |
< |
#define F_FORE 1 /* fill foreground */ |
26 |
< |
#define F_BACK 2 /* fill background */ |
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#ifndef BSD |
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#define vfork fork |
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#endif |
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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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|
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#define PACKSIZ 256 /* max. calculation packet size */ |
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|
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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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VIEW ourview = STDVIEW(512); /* desired view */ |
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struct position {int x,y; float z;}; |
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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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COLR *ourpict; /* output picture */ |
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|
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char *progname; |
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|
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VIEW theirview = STDVIEW(512); /* input view */ |
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int gotview; /* got input view? */ |
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|
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int fill = F_FORE|F_BACK; /* fill level */ |
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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 (*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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double ourexp = -1; /* output picture exposure */ |
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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 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 normdist = 1; /* normalized distance? */ |
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int hasmatrix = 0; /* has transformation matrix */ |
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|
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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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main(argc, argv) /* interpolate pictures */ |
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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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int i; |
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int i, rval; |
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|
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progname = argv[0]; |
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|
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for (i = 1; i < argc && argv[i][0] == '-'; i++) |
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for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
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rval = getviewopt(&ourview, argc-i, argv+i); |
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if (rval >= 0) { |
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i += rval; |
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continue; |
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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); |
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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; |
111 |
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check(3,NULL); |
112 |
> |
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); |
116 |
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fillo = F_FORE; |
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break; |
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case 'b': /* background */ |
119 |
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check(3,0); |
120 |
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fill = F_BACK; |
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check(3,NULL); |
120 |
> |
fillo = F_BACK; |
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break; |
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case 'a': /* all */ |
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check(3,0); |
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fill = F_FORE|F_BACK; |
123 |
> |
check(3,NULL); |
124 |
> |
fillo = F_FORE|F_BACK; |
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break; |
126 |
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case 's': /* sample */ |
127 |
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check(3,"i"); |
128 |
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fillsamp = atoi(argv[++i]); |
129 |
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break; |
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case 'c': /* color */ |
131 |
< |
check(3,3); |
131 |
> |
check(3,"fff"); |
132 |
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fillfunc = backfill; |
133 |
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setcolr(backcolr, atof(argv[i+1]), |
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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 */ |
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check(3,"f"); |
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fillfunc = backfill; |
140 |
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backz = atof(argv[++i]); |
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break; |
142 |
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case 'r': /* rtrace */ |
143 |
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check(3,"s"); |
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fillfunc = rcalfill; |
145 |
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calstart(RTCOM, argv[++i]); |
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break; |
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default: |
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goto badopt; |
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} |
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break; |
151 |
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case 'z': /* z file */ |
152 |
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check(2,1); |
152 |
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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 */ |
156 |
< |
check(2,1); |
157 |
< |
ourview.hresolu = atoi(argv[++i]); |
156 |
> |
check(2,"i"); |
157 |
> |
hresolu = atoi(argv[++i]); |
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break; |
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case 'y': /* y resolution */ |
160 |
< |
check(2,1); |
161 |
< |
ourview.vresolu = atoi(argv[++i]); |
160 |
> |
check(2,"i"); |
161 |
> |
vresolu = atoi(argv[++i]); |
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break; |
163 |
< |
case 'v': /* view */ |
164 |
< |
switch (argv[i][2]) { |
109 |
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case 't': /* type */ |
110 |
< |
check(4,0); |
111 |
< |
ourview.type = argv[i][3]; |
112 |
< |
break; |
113 |
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case 'p': /* point */ |
114 |
< |
check(3,3); |
115 |
< |
ourview.vp[0] = atof(argv[++i]); |
116 |
< |
ourview.vp[1] = atof(argv[++i]); |
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< |
ourview.vp[2] = atof(argv[++i]); |
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< |
break; |
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case 'd': /* direction */ |
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check(3,3); |
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ourview.vdir[0] = atof(argv[++i]); |
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ourview.vdir[1] = atof(argv[++i]); |
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ourview.vdir[2] = atof(argv[++i]); |
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break; |
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case 'u': /* up */ |
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check(3,3); |
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ourview.vup[0] = atof(argv[++i]); |
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ourview.vup[1] = atof(argv[++i]); |
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ourview.vup[2] = atof(argv[++i]); |
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break; |
131 |
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case 'h': /* horizontal */ |
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check(3,1); |
133 |
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ourview.horiz = atof(argv[++i]); |
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break; |
135 |
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case 'v': /* vertical */ |
136 |
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check(3,1); |
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ourview.vert = atof(argv[++i]); |
138 |
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break; |
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case 'f': /* file */ |
140 |
< |
check(3,1); |
141 |
< |
gotvfile = viewfile(argv[++i], &ourview); |
142 |
< |
if (gotvfile < 0) { |
143 |
< |
perror(argv[i]); |
144 |
< |
exit(1); |
145 |
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} else if (gotvfile == 0) { |
146 |
< |
fprintf(stderr, "%s: bad view file\n", |
147 |
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argv[i]); |
148 |
< |
exit(1); |
149 |
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} |
150 |
< |
break; |
151 |
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default: |
163 |
> |
case 'p': /* pixel aspect */ |
164 |
> |
if (argv[i][2] != 'a') |
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goto badopt; |
166 |
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check(3,"f"); |
167 |
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pixaspect = atof(argv[++i]); |
168 |
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break; |
169 |
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case 'v': /* view file */ |
170 |
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if (argv[i][2] != 'f') |
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goto badopt; |
172 |
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check(3,"s"); |
173 |
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gotvfile = viewfile(argv[++i], &ourview, 0, 0); |
174 |
+ |
if (gotvfile < 0) { |
175 |
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perror(argv[i]); |
176 |
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exit(1); |
177 |
+ |
} else if (gotvfile == 0) { |
178 |
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fprintf(stderr, "%s: bad view file\n", |
179 |
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argv[i]); |
180 |
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exit(1); |
181 |
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} |
182 |
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break; |
183 |
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default: |
186 |
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progname, argv[i]); |
187 |
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goto userr; |
188 |
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} |
189 |
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} |
190 |
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/* check arguments */ |
191 |
< |
if (argc-i < 2 || (argc-i)%2) |
191 |
> |
if ((argc-i)%2) |
192 |
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goto userr; |
193 |
+ |
if (fillsamp == 1) |
194 |
+ |
fillo &= ~F_BACK; |
195 |
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/* set view */ |
196 |
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if (err = setview(&ourview)) { |
197 |
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fprintf(stderr, "%s: %s\n", progname, err); |
198 |
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exit(1); |
199 |
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} |
200 |
+ |
normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu); |
201 |
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/* allocate frame */ |
202 |
< |
ourpict = (COLR *)calloc(ourview.hresolu*ourview.vresolu,sizeof(COLR)); |
203 |
< |
ourzbuf = (float *)calloc(ourview.hresolu*ourview.vresolu,sizeof(float)); |
204 |
< |
if (ourpict == NULL || ourzbuf == NULL) { |
205 |
< |
perror(progname); |
174 |
< |
exit(1); |
175 |
< |
} |
202 |
> |
ourpict = (COLR *)malloc(hresolu*vresolu*sizeof(COLR)); |
203 |
> |
ourzbuf = (float *)calloc(hresolu*vresolu,sizeof(float)); |
204 |
> |
if (ourpict == NULL || ourzbuf == NULL) |
205 |
> |
syserror(); |
206 |
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/* get input */ |
207 |
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for ( ; i < argc; i += 2) |
208 |
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addpicture(argv[i], argv[i+1]); |
209 |
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/* fill in spaces */ |
210 |
< |
if (fill&F_BACK) |
211 |
< |
fillpicture(); |
210 |
> |
if (fillo&F_BACK) |
211 |
> |
backpicture(fillfunc, fillsamp); |
212 |
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else |
213 |
< |
backpicture(); |
213 |
> |
fillpicture(fillfunc); |
214 |
> |
/* close calculation */ |
215 |
> |
caldone(); |
216 |
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/* add to header */ |
217 |
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printargs(argc, argv, stdout); |
218 |
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if (gotvfile) { |
219 |
< |
printf(VIEWSTR); |
219 |
> |
fputs(VIEWSTR, stdout); |
220 |
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fprintview(&ourview, stdout); |
221 |
< |
printf("\n"); |
221 |
> |
putc('\n', stdout); |
222 |
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} |
223 |
< |
printf("\n"); |
223 |
> |
if (pixaspect < .99 || pixaspect > 1.01) |
224 |
> |
fputaspect(pixaspect, stdout); |
225 |
> |
if (ourexp > 0 && (ourexp < .995 || ourexp > 1.005)) |
226 |
> |
fputexpos(ourexp, stdout); |
227 |
> |
fputformat(COLRFMT, stdout); |
228 |
> |
putc('\n', stdout); |
229 |
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/* write picture */ |
230 |
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writepicture(); |
231 |
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/* write z file */ |
235 |
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exit(0); |
236 |
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userr: |
237 |
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fprintf(stderr, |
238 |
< |
"Usage: %s [view opts][-t zthresh][-z zout][-fT][-n] pfile zspec ..\n", |
238 |
> |
"Usage: %s [view opts][-t eps][-z zout][-fT][-n] pfile zspec ..\n", |
239 |
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progname); |
240 |
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exit(1); |
241 |
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#undef check |
245 |
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headline(s) /* process header string */ |
246 |
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char *s; |
247 |
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{ |
248 |
< |
static char *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL}; |
212 |
< |
register char **an; |
248 |
> |
char fmt[32]; |
249 |
|
|
250 |
< |
printf("\t%s", s); |
250 |
> |
if (isformat(s)) { |
251 |
> |
formatval(fmt, s); |
252 |
> |
wrongformat = strcmp(fmt, COLRFMT); |
253 |
> |
return; |
254 |
> |
} |
255 |
> |
putc('\t', stdout); |
256 |
> |
fputs(s, stdout); |
257 |
|
|
258 |
< |
for (an = altname; *an != NULL; an++) |
259 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
260 |
< |
if (sscanview(&theirview, s+strlen(*an)) == 0) |
261 |
< |
gotview++; |
262 |
< |
break; |
263 |
< |
} |
258 |
> |
if (isexpos(s)) { |
259 |
> |
theirexp *= exposval(s); |
260 |
> |
return; |
261 |
> |
} |
262 |
> |
if (isview(s) && sscanview(&theirview, s) > 0) |
263 |
> |
gotview++; |
264 |
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} |
265 |
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|
266 |
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|
267 |
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addpicture(pfile, zspec) /* add picture to output */ |
268 |
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char *pfile, *zspec; |
269 |
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{ |
270 |
< |
extern double atof(); |
271 |
< |
FILE *pfp, *zfp; |
270 |
> |
FILE *pfp; |
271 |
> |
int zfd; |
272 |
|
char *err; |
273 |
|
COLR *scanin; |
274 |
< |
float *zin, *zlast; |
275 |
< |
int *plast; |
274 |
> |
float *zin; |
275 |
> |
struct position *plast; |
276 |
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int y; |
277 |
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/* open picture file */ |
278 |
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if ((pfp = fopen(pfile, "r")) == NULL) { |
279 |
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perror(pfile); |
280 |
|
exit(1); |
281 |
|
} |
282 |
< |
/* get header and view */ |
283 |
< |
printf("%s:\n", pfile); |
282 |
> |
/* get header with exposure and view */ |
283 |
> |
theirexp = 1.0; |
284 |
|
gotview = 0; |
285 |
< |
getheader(pfp, headline); |
286 |
< |
if (!gotview || fgetresolu(&theirview.hresolu, &theirview.vresolu, pfp) |
287 |
< |
!= (YMAJOR|YDECR)) { |
288 |
< |
fprintf(stderr, "%s: picture view error\n", pfile); |
285 |
> |
printf("%s:\n", pfile); |
286 |
> |
getheader(pfp, headline, NULL); |
287 |
> |
if (wrongformat || !gotview || !fgetsresolu(&tresolu, pfp)) { |
288 |
> |
fprintf(stderr, "%s: picture format error\n", pfile); |
289 |
|
exit(1); |
290 |
|
} |
291 |
+ |
if (ourexp <= 0) |
292 |
+ |
ourexp = theirexp; |
293 |
+ |
else if (ABS(theirexp-ourexp) > .01*ourexp) |
294 |
+ |
fprintf(stderr, "%s: different exposure (warning)\n", pfile); |
295 |
|
if (err = setview(&theirview)) { |
296 |
|
fprintf(stderr, "%s: %s\n", pfile, err); |
297 |
|
exit(1); |
298 |
|
} |
299 |
|
/* compute transformation */ |
300 |
< |
pixform(theirs2ours, &theirview, &ourview); |
300 |
> |
hasmatrix = pixform(theirs2ours, &theirview, &ourview); |
301 |
|
/* allocate scanlines */ |
302 |
< |
scanin = (COLR *)malloc(theirview.hresolu*sizeof(COLR)); |
303 |
< |
zin = (float *)malloc(theirview.hresolu*sizeof(float)); |
304 |
< |
plast = (int *)calloc(theirview.hresolu, sizeof(int)); |
305 |
< |
zlast = (float *)calloc(theirview.hresolu, sizeof(float)); |
306 |
< |
if (scanin == NULL || zin == NULL || plast == NULL || zlast == NULL) { |
307 |
< |
perror(progname); |
262 |
< |
exit(1); |
263 |
< |
} |
302 |
> |
scanin = (COLR *)malloc(scanlen(&tresolu)*sizeof(COLR)); |
303 |
> |
zin = (float *)malloc(scanlen(&tresolu)*sizeof(float)); |
304 |
> |
plast = (struct position *)calloc(scanlen(&tresolu), |
305 |
> |
sizeof(struct position)); |
306 |
> |
if (scanin == NULL || zin == NULL || plast == NULL) |
307 |
> |
syserror(); |
308 |
|
/* get z specification or file */ |
309 |
< |
if ((zfp = fopen(zspec, "r")) == NULL) { |
309 |
> |
if ((zfd = open(zspec, O_RDONLY)) == -1) { |
310 |
|
double zvalue; |
311 |
|
register int x; |
312 |
|
if (!isfloat(zspec) || (zvalue = atof(zspec)) <= 0.0) { |
313 |
|
perror(zspec); |
314 |
|
exit(1); |
315 |
|
} |
316 |
< |
for (x = 0; x < theirview.hresolu; x++) |
316 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) |
317 |
|
zin[x] = zvalue; |
318 |
|
} |
319 |
|
/* load image */ |
320 |
< |
for (y = theirview.vresolu-1; y >= 0; y--) { |
321 |
< |
if (freadcolrs(scanin, theirview.hresolu, pfp) < 0) { |
320 |
> |
for (y = 0; y < numscans(&tresolu); y++) { |
321 |
> |
if (freadcolrs(scanin, scanlen(&tresolu), pfp) < 0) { |
322 |
|
fprintf(stderr, "%s: read error\n", pfile); |
323 |
|
exit(1); |
324 |
|
} |
325 |
< |
if (zfp != NULL |
326 |
< |
&& fread(zin,sizeof(float),theirview.hresolu,zfp) |
327 |
< |
< theirview.hresolu) { |
325 |
> |
if (zfd != -1 && read(zfd,(char *)zin, |
326 |
> |
scanlen(&tresolu)*sizeof(float)) |
327 |
> |
< scanlen(&tresolu)*sizeof(float)) { |
328 |
|
fprintf(stderr, "%s: read error\n", zspec); |
329 |
|
exit(1); |
330 |
|
} |
331 |
< |
addscanline(y, scanin, zin, plast, zlast); |
331 |
> |
addscanline(y, scanin, zin, plast); |
332 |
|
} |
333 |
|
/* clean up */ |
334 |
|
free((char *)scanin); |
335 |
|
free((char *)zin); |
336 |
|
free((char *)plast); |
293 |
– |
free((char *)zlast); |
337 |
|
fclose(pfp); |
338 |
< |
if (zfp != NULL) |
339 |
< |
fclose(zfp); |
338 |
> |
if (zfd != -1) |
339 |
> |
close(zfd); |
340 |
|
} |
341 |
|
|
342 |
|
|
346 |
|
{ |
347 |
|
double m4t[4][4]; |
348 |
|
|
349 |
+ |
if (vw1->type != VT_PER && vw1->type != VT_PAR) |
350 |
+ |
return(0); |
351 |
+ |
if (vw2->type != VT_PER && vw2->type != VT_PAR) |
352 |
+ |
return(0); |
353 |
|
setident4(xfmat); |
354 |
< |
xfmat[0][0] = vw1->vhinc[0]; |
355 |
< |
xfmat[0][1] = vw1->vhinc[1]; |
356 |
< |
xfmat[0][2] = vw1->vhinc[2]; |
357 |
< |
xfmat[1][0] = vw1->vvinc[0]; |
358 |
< |
xfmat[1][1] = vw1->vvinc[1]; |
359 |
< |
xfmat[1][2] = vw1->vvinc[2]; |
354 |
> |
xfmat[0][0] = vw1->hvec[0]; |
355 |
> |
xfmat[0][1] = vw1->hvec[1]; |
356 |
> |
xfmat[0][2] = vw1->hvec[2]; |
357 |
> |
xfmat[1][0] = vw1->vvec[0]; |
358 |
> |
xfmat[1][1] = vw1->vvec[1]; |
359 |
> |
xfmat[1][2] = vw1->vvec[2]; |
360 |
|
xfmat[2][0] = vw1->vdir[0]; |
361 |
|
xfmat[2][1] = vw1->vdir[1]; |
362 |
|
xfmat[2][2] = vw1->vdir[2]; |
364 |
|
xfmat[3][1] = vw1->vp[1]; |
365 |
|
xfmat[3][2] = vw1->vp[2]; |
366 |
|
setident4(m4t); |
367 |
< |
m4t[0][0] = vw2->vhinc[0]/vw2->vhn2; |
368 |
< |
m4t[1][0] = vw2->vhinc[1]/vw2->vhn2; |
369 |
< |
m4t[2][0] = vw2->vhinc[2]/vw2->vhn2; |
370 |
< |
m4t[3][0] = -DOT(vw2->vp,vw2->vhinc)/vw2->vhn2; |
371 |
< |
m4t[0][1] = vw2->vvinc[0]/vw2->vvn2; |
372 |
< |
m4t[1][1] = vw2->vvinc[1]/vw2->vvn2; |
373 |
< |
m4t[2][1] = vw2->vvinc[2]/vw2->vvn2; |
374 |
< |
m4t[3][1] = -DOT(vw2->vp,vw2->vvinc)/vw2->vvn2; |
367 |
> |
m4t[0][0] = vw2->hvec[0]/vw2->hn2; |
368 |
> |
m4t[1][0] = vw2->hvec[1]/vw2->hn2; |
369 |
> |
m4t[2][0] = vw2->hvec[2]/vw2->hn2; |
370 |
> |
m4t[3][0] = -DOT(vw2->vp,vw2->hvec)/vw2->hn2; |
371 |
> |
m4t[0][1] = vw2->vvec[0]/vw2->vn2; |
372 |
> |
m4t[1][1] = vw2->vvec[1]/vw2->vn2; |
373 |
> |
m4t[2][1] = vw2->vvec[2]/vw2->vn2; |
374 |
> |
m4t[3][1] = -DOT(vw2->vp,vw2->vvec)/vw2->vn2; |
375 |
|
m4t[0][2] = vw2->vdir[0]; |
376 |
|
m4t[1][2] = vw2->vdir[1]; |
377 |
|
m4t[2][2] = vw2->vdir[2]; |
378 |
|
m4t[3][2] = -DOT(vw2->vp,vw2->vdir); |
379 |
|
multmat4(xfmat, xfmat, m4t); |
380 |
+ |
return(1); |
381 |
|
} |
382 |
|
|
383 |
|
|
384 |
< |
addscanline(y, pline, zline, lasty, lastyz) /* add scanline to output */ |
384 |
> |
addscanline(y, pline, zline, lasty) /* add scanline to output */ |
385 |
|
int y; |
386 |
|
COLR *pline; |
387 |
|
float *zline; |
388 |
< |
int *lasty; /* input/output */ |
341 |
< |
float *lastyz; /* input/output */ |
388 |
> |
struct position *lasty; /* input/output */ |
389 |
|
{ |
390 |
|
extern double sqrt(); |
391 |
< |
double pos[3]; |
392 |
< |
int lastx = 0; |
346 |
< |
double lastxz = 0; |
347 |
< |
double zt; |
348 |
< |
int xpos, ypos; |
391 |
> |
FVECT pos; |
392 |
> |
struct position lastx, newpos; |
393 |
|
register int x; |
394 |
|
|
395 |
< |
for (x = theirview.hresolu-1; x >= 0; x--) { |
396 |
< |
pos[0] = x - .5*(theirview.hresolu-1); |
397 |
< |
pos[1] = y - .5*(theirview.vresolu-1); |
395 |
> |
lastx.z = 0; |
396 |
> |
for (x = scanlen(&tresolu); x-- > 0; ) { |
397 |
> |
pix2loc(pos, &tresolu, x, y); |
398 |
|
pos[2] = zline[x]; |
399 |
< |
if (theirview.type == VT_PER) { |
400 |
< |
if (normdist) /* adjust for eye-ray distance */ |
357 |
< |
pos[2] /= sqrt( 1. |
358 |
< |
+ pos[0]*pos[0]*theirview.vhn2 |
359 |
< |
+ pos[1]*pos[1]*theirview.vvn2 ); |
360 |
< |
pos[0] *= pos[2]; |
361 |
< |
pos[1] *= pos[2]; |
362 |
< |
} |
363 |
< |
multp3(pos, pos, theirs2ours); |
364 |
< |
if (pos[2] <= 0) |
399 |
> |
if (movepixel(pos) < 0) { |
400 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
401 |
|
continue; |
366 |
– |
if (ourview.type == VT_PER) { |
367 |
– |
pos[0] /= pos[2]; |
368 |
– |
pos[1] /= pos[2]; |
402 |
|
} |
403 |
< |
pos[0] += .5*ourview.hresolu; |
404 |
< |
pos[1] += .5*ourview.vresolu; |
405 |
< |
if (pos[0] < 0 || (xpos = pos[0]) >= ourview.hresolu |
373 |
< |
|| pos[1] < 0 || (ypos = pos[1]) >= ourview.vresolu) |
374 |
< |
continue; |
403 |
> |
newpos.x = pos[0] * hresolu; |
404 |
> |
newpos.y = pos[1] * vresolu; |
405 |
> |
newpos.z = zline[x]; |
406 |
|
/* add pixel to our image */ |
407 |
< |
zt = 2.*zeps*zline[x]; |
408 |
< |
addpixel(xpos, ypos, |
409 |
< |
(fill&F_FORE && ABS(zline[x]-lastxz) <= zt) |
410 |
< |
? lastx - xpos : 1, |
411 |
< |
(fill&F_FORE && ABS(zline[x]-lastyz[x]) <= zt) |
412 |
< |
? lasty[x] - ypos : 1, |
413 |
< |
pline[x], pos[2]); |
414 |
< |
lastx = xpos; |
384 |
< |
lasty[x] = ypos; |
385 |
< |
lastxz = lastyz[x] = zline[x]; |
407 |
> |
if (pos[0] >= 0 && newpos.x < hresolu |
408 |
> |
&& pos[1] >= 0 && newpos.y < vresolu) { |
409 |
> |
addpixel(&newpos, &lastx, &lasty[x], pline[x], pos[2]); |
410 |
> |
lasty[x].x = lastx.x = newpos.x; |
411 |
> |
lasty[x].y = lastx.y = newpos.y; |
412 |
> |
lasty[x].z = lastx.z = newpos.z; |
413 |
> |
} else |
414 |
> |
lasty[x].z = lastx.z = 0; /* mark invalid */ |
415 |
|
} |
416 |
|
} |
417 |
|
|
418 |
|
|
419 |
< |
addpixel(xstart, ystart, width, height, pix, z) /* fill in area for pixel */ |
420 |
< |
int xstart, ystart; |
392 |
< |
int width, height; |
419 |
> |
addpixel(p0, p1, p2, pix, z) /* fill in pixel parallelogram */ |
420 |
> |
struct position *p0, *p1, *p2; |
421 |
|
COLR pix; |
422 |
|
double z; |
423 |
|
{ |
424 |
< |
register int x, y; |
425 |
< |
/* make width and height positive */ |
426 |
< |
if (width < 0) { |
427 |
< |
width = -width; |
428 |
< |
xstart = xstart-width+1; |
429 |
< |
} else if (width == 0) |
430 |
< |
width = 1; |
431 |
< |
if (height < 0) { |
432 |
< |
height = -height; |
433 |
< |
ystart = ystart-height+1; |
434 |
< |
} else if (height == 0) |
435 |
< |
height = 1; |
436 |
< |
/* fill pixel(s) within rectangle */ |
437 |
< |
for (y = ystart; y < ystart+height; y++) |
438 |
< |
for (x = xstart; x < xstart+width; x++) |
439 |
< |
if (zscan(y)[x] <= 0 |
440 |
< |
|| zscan(y)[x]-z > zeps*zscan(y)[x]) { |
424 |
> |
double zt = 2.*zeps*p0->z; /* threshold */ |
425 |
> |
int s1x, s1y, s2x, s2y; /* step sizes */ |
426 |
> |
int l1, l2, c1, c2; /* side lengths and counters */ |
427 |
> |
int p1isy; /* p0p1 along y? */ |
428 |
> |
int x1, y1; /* p1 position */ |
429 |
> |
register int x, y; /* final position */ |
430 |
> |
|
431 |
> |
/* compute vector p0p1 */ |
432 |
> |
if (fillo&F_FORE && ABS(p1->z-p0->z) <= zt) { |
433 |
> |
s1x = p1->x - p0->x; |
434 |
> |
s1y = p1->y - p0->y; |
435 |
> |
l1 = ABS(s1x); |
436 |
> |
if (p1isy = (ABS(s1y) > l1)) |
437 |
> |
l1 = ABS(s1y); |
438 |
> |
} else { |
439 |
> |
l1 = s1x = s1y = 1; |
440 |
> |
p1isy = -1; |
441 |
> |
} |
442 |
> |
/* compute vector p0p2 */ |
443 |
> |
if (fillo&F_FORE && ABS(p2->z-p0->z) <= zt) { |
444 |
> |
s2x = p2->x - p0->x; |
445 |
> |
s2y = p2->y - p0->y; |
446 |
> |
if (p1isy == 1) |
447 |
> |
l2 = ABS(s2x); |
448 |
> |
else { |
449 |
> |
l2 = ABS(s2y); |
450 |
> |
if (p1isy != 0 && ABS(s2x) > l2) |
451 |
> |
l2 = ABS(s2x); |
452 |
> |
} |
453 |
> |
} else |
454 |
> |
l2 = s2x = s2y = 1; |
455 |
> |
/* fill the parallelogram */ |
456 |
> |
for (c1 = l1; c1-- > 0; ) { |
457 |
> |
x1 = p0->x + c1*s1x/l1; |
458 |
> |
y1 = p0->y + c1*s1y/l1; |
459 |
> |
for (c2 = l2; c2-- > 0; ) { |
460 |
> |
x = x1 + c2*s2x/l2; |
461 |
> |
if (x < 0 || x >= hresolu) |
462 |
> |
continue; |
463 |
> |
y = y1 + c2*s2y/l2; |
464 |
> |
if (y < 0 || y >= vresolu) |
465 |
> |
continue; |
466 |
> |
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
467 |
> |
> zeps*zscan(y)[x]) { |
468 |
|
zscan(y)[x] = z; |
469 |
|
copycolr(pscan(y)[x], pix); |
470 |
|
} |
471 |
+ |
} |
472 |
+ |
} |
473 |
|
} |
474 |
|
|
475 |
|
|
476 |
< |
fillpicture() /* fill in empty spaces */ |
476 |
> |
movepixel(pos) /* reposition image point */ |
477 |
> |
FVECT pos; |
478 |
|
{ |
479 |
+ |
FVECT pt, direc; |
480 |
+ |
|
481 |
+ |
if (pos[2] <= 0) /* empty pixel */ |
482 |
+ |
return(-1); |
483 |
+ |
if (hasmatrix) { |
484 |
+ |
pos[0] += theirview.hoff - .5; |
485 |
+ |
pos[1] += theirview.voff - .5; |
486 |
+ |
if (theirview.type == VT_PER) { |
487 |
+ |
if (normdist) /* adjust for eye-ray distance */ |
488 |
+ |
pos[2] /= sqrt( 1. |
489 |
+ |
+ pos[0]*pos[0]*theirview.hn2 |
490 |
+ |
+ pos[1]*pos[1]*theirview.vn2 ); |
491 |
+ |
pos[0] *= pos[2]; |
492 |
+ |
pos[1] *= pos[2]; |
493 |
+ |
} |
494 |
+ |
multp3(pos, pos, theirs2ours); |
495 |
+ |
if (pos[2] <= 0) |
496 |
+ |
return(-1); |
497 |
+ |
if (ourview.type == VT_PER) { |
498 |
+ |
pos[0] /= pos[2]; |
499 |
+ |
pos[1] /= pos[2]; |
500 |
+ |
} |
501 |
+ |
pos[0] += .5 - ourview.hoff; |
502 |
+ |
pos[1] += .5 - ourview.voff; |
503 |
+ |
return(0); |
504 |
+ |
} |
505 |
+ |
if (viewray(pt, direc, &theirview, pos[0], pos[1]) < 0) |
506 |
+ |
return(-1); |
507 |
+ |
pt[0] += direc[0]*pos[2]; |
508 |
+ |
pt[1] += direc[1]*pos[2]; |
509 |
+ |
pt[2] += direc[2]*pos[2]; |
510 |
+ |
viewloc(pos, &ourview, pt); |
511 |
+ |
if (pos[2] <= 0) |
512 |
+ |
return(-1); |
513 |
+ |
return(0); |
514 |
+ |
} |
515 |
+ |
|
516 |
+ |
|
517 |
+ |
backpicture(fill, samp) /* background fill algorithm */ |
518 |
+ |
int (*fill)(); |
519 |
+ |
int samp; |
520 |
+ |
{ |
521 |
|
int *yback, xback; |
522 |
|
int y; |
423 |
– |
COLR pfill; |
523 |
|
register int x, i; |
524 |
|
/* get back buffer */ |
525 |
< |
yback = (int *)malloc(ourview.hresolu*sizeof(int)); |
526 |
< |
if (yback == NULL) { |
527 |
< |
perror(progname); |
528 |
< |
return; |
430 |
< |
} |
431 |
< |
for (x = 0; x < ourview.hresolu; x++) |
525 |
> |
yback = (int *)malloc(hresolu*sizeof(int)); |
526 |
> |
if (yback == NULL) |
527 |
> |
syserror(); |
528 |
> |
for (x = 0; x < hresolu; x++) |
529 |
|
yback[x] = -2; |
530 |
|
/* |
531 |
|
* Xback and yback are the pixel locations of suitable |
534 |
|
* that there is no suitable background in this direction. |
535 |
|
*/ |
536 |
|
/* fill image */ |
537 |
< |
for (y = 0; y < ourview.vresolu; y++) { |
537 |
> |
for (y = 0; y < vresolu; y++) { |
538 |
|
xback = -2; |
539 |
< |
for (x = 0; x < ourview.hresolu; x++) |
539 |
> |
for (x = 0; x < hresolu; x++) |
540 |
|
if (zscan(y)[x] <= 0) { /* empty pixel */ |
541 |
|
/* |
542 |
|
* First, find background from above or below. |
543 |
|
* (farthest assigned pixel) |
544 |
|
*/ |
545 |
|
if (yback[x] == -2) { |
546 |
< |
for (i = y+1; i < ourview.vresolu; i++) |
546 |
> |
for (i = y+1; i < vresolu; i++) |
547 |
|
if (zscan(i)[x] > 0) |
548 |
|
break; |
549 |
< |
if (i < ourview.vresolu |
549 |
> |
if (i < vresolu |
550 |
|
&& (y <= 0 || zscan(y-1)[x] < zscan(i)[x])) |
551 |
|
yback[x] = i; |
552 |
|
else |
556 |
|
* Next, find background from left or right. |
557 |
|
*/ |
558 |
|
if (xback == -2) { |
559 |
< |
for (i = x+1; i < ourview.hresolu; i++) |
559 |
> |
for (i = x+1; i < hresolu; i++) |
560 |
|
if (zscan(y)[i] > 0) |
561 |
|
break; |
562 |
< |
if (i < ourview.hresolu |
562 |
> |
if (i < hresolu |
563 |
|
&& (x <= 0 || zscan(y)[x-1] < zscan(y)[i])) |
564 |
|
xback = i; |
565 |
|
else |
566 |
|
xback = x-1; |
567 |
|
} |
568 |
|
/* |
569 |
< |
* Check to see if we have no background for |
570 |
< |
* this pixel. If not, use background color. |
569 |
> |
* If we have no background for this pixel, |
570 |
> |
* use the given fill function. |
571 |
|
*/ |
572 |
< |
if (xback < 0 && yback[x] < 0) { |
573 |
< |
copycolr(pscan(y)[x], backcolr); |
477 |
< |
continue; |
478 |
< |
} |
572 |
> |
if (xback < 0 && yback[x] < 0) |
573 |
> |
goto fillit; |
574 |
|
/* |
575 |
|
* Compare, and use the background that is |
576 |
|
* farther, unless one of them is next to us. |
577 |
+ |
* If the background is too distant, call |
578 |
+ |
* the fill function. |
579 |
|
*/ |
580 |
|
if ( yback[x] < 0 |
581 |
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
582 |
|
|| ( ABS(y-yback[x]) > 1 |
583 |
|
&& zscan(yback[x])[x] |
584 |
< |
< zscan(y)[xback] ) ) |
584 |
> |
< zscan(y)[xback] ) ) { |
585 |
> |
if (samp > 0 && ABS(x-xback) >= samp) |
586 |
> |
goto fillit; |
587 |
|
copycolr(pscan(y)[x],pscan(y)[xback]); |
588 |
< |
else |
588 |
> |
zscan(y)[x] = zscan(y)[xback]; |
589 |
> |
} else { |
590 |
> |
if (samp > 0 && ABS(y-yback[x]) > samp) |
591 |
> |
goto fillit; |
592 |
|
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
593 |
+ |
zscan(y)[x] = zscan(yback[x])[x]; |
594 |
+ |
} |
595 |
+ |
continue; |
596 |
+ |
fillit: |
597 |
+ |
(*fill)(x,y); |
598 |
+ |
if (fill == rcalfill) { /* use it */ |
599 |
+ |
clearqueue(); |
600 |
+ |
xback = x; |
601 |
+ |
yback[x] = y; |
602 |
+ |
} |
603 |
|
} else { /* full pixel */ |
604 |
|
yback[x] = -2; |
605 |
|
xback = -2; |
609 |
|
} |
610 |
|
|
611 |
|
|
612 |
< |
backpicture() /* paint in empty pixels */ |
612 |
> |
fillpicture(fill) /* paint in empty pixels using fill */ |
613 |
> |
int (*fill)(); |
614 |
|
{ |
615 |
|
register int x, y; |
616 |
|
|
617 |
< |
for (y = 0; y < ourview.vresolu; y++) |
618 |
< |
for (x = 0; x < ourview.hresolu; x++) |
617 |
> |
for (y = 0; y < vresolu; y++) |
618 |
> |
for (x = 0; x < hresolu; x++) |
619 |
|
if (zscan(y)[x] <= 0) |
620 |
< |
copycolr(pscan(y)[x], backcolr); |
620 |
> |
(*fill)(x,y); |
621 |
|
} |
622 |
|
|
623 |
|
|
625 |
|
{ |
626 |
|
int y; |
627 |
|
|
628 |
< |
fputresolu(YMAJOR|YDECR, ourview.hresolu, ourview.vresolu, stdout); |
629 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) |
630 |
< |
if (fwritecolrs(pscan(y), ourview.hresolu, stdout) < 0) { |
631 |
< |
perror(progname); |
519 |
< |
exit(1); |
520 |
< |
} |
628 |
> |
fprtresolu(hresolu, vresolu, stdout); |
629 |
> |
for (y = vresolu-1; y >= 0; y--) |
630 |
> |
if (fwritecolrs(pscan(y), hresolu, stdout) < 0) |
631 |
> |
syserror(); |
632 |
|
} |
633 |
|
|
634 |
|
|
637 |
|
{ |
638 |
|
extern double sqrt(); |
639 |
|
int donorm = normdist && ourview.type == VT_PER; |
640 |
< |
FILE *fp; |
640 |
> |
int fd; |
641 |
|
int y; |
642 |
|
float *zout; |
643 |
|
|
644 |
< |
if ((fp = fopen(fname, "w")) == NULL) { |
644 |
> |
if ((fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, 0666)) == -1) { |
645 |
|
perror(fname); |
646 |
|
exit(1); |
647 |
|
} |
648 |
|
if (donorm |
649 |
< |
&& (zout = (float *)malloc(ourview.hresolu*sizeof(float))) == NULL) { |
650 |
< |
perror(progname); |
651 |
< |
exit(1); |
541 |
< |
} |
542 |
< |
for (y = ourview.vresolu-1; y >= 0; y--) { |
649 |
> |
&& (zout = (float *)malloc(hresolu*sizeof(float))) == NULL) |
650 |
> |
syserror(); |
651 |
> |
for (y = vresolu-1; y >= 0; y--) { |
652 |
|
if (donorm) { |
653 |
|
double vx, yzn2; |
654 |
|
register int x; |
655 |
< |
yzn2 = y - .5*(ourview.vresolu-1); |
656 |
< |
yzn2 = 1. + yzn2*yzn2*ourview.vvn2; |
657 |
< |
for (x = 0; x < ourview.hresolu; x++) { |
658 |
< |
vx = x - .5*(ourview.hresolu-1); |
655 |
> |
yzn2 = (y+.5)/vresolu + ourview.voff - .5; |
656 |
> |
yzn2 = 1. + yzn2*yzn2*ourview.vn2; |
657 |
> |
for (x = 0; x < hresolu; x++) { |
658 |
> |
vx = (x+.5)/hresolu + ourview.hoff - .5; |
659 |
|
zout[x] = zscan(y)[x] |
660 |
< |
* sqrt(vx*vx*ourview.vhn2 + yzn2); |
660 |
> |
* sqrt(vx*vx*ourview.hn2 + yzn2); |
661 |
|
} |
662 |
|
} else |
663 |
|
zout = zscan(y); |
664 |
< |
if (fwrite(zout, sizeof(float), ourview.hresolu, fp) |
665 |
< |
< ourview.hresolu) { |
664 |
> |
if (write(fd, (char *)zout, hresolu*sizeof(float)) |
665 |
> |
< hresolu*sizeof(float)) { |
666 |
|
perror(fname); |
667 |
|
exit(1); |
668 |
|
} |
669 |
|
} |
670 |
|
if (donorm) |
671 |
|
free((char *)zout); |
672 |
< |
fclose(fp); |
672 |
> |
close(fd); |
673 |
|
} |
674 |
|
|
675 |
|
|
681 |
|
&& *s != 'e' && *s != 'E' && *s != '+') |
682 |
|
return(0); |
683 |
|
return(1); |
684 |
+ |
} |
685 |
+ |
|
686 |
+ |
|
687 |
+ |
backfill(x, y) /* fill pixel with background */ |
688 |
+ |
int x, y; |
689 |
+ |
{ |
690 |
+ |
register BYTE *dest = pscan(y)[x]; |
691 |
+ |
|
692 |
+ |
copycolr(dest, backcolr); |
693 |
+ |
zscan(y)[x] = backz; |
694 |
+ |
} |
695 |
+ |
|
696 |
+ |
|
697 |
+ |
calstart(prog, args) /* start fill calculation */ |
698 |
+ |
char *prog, *args; |
699 |
+ |
{ |
700 |
+ |
char combuf[512]; |
701 |
+ |
char *argv[64]; |
702 |
+ |
int rval; |
703 |
+ |
register char **wp, *cp; |
704 |
+ |
|
705 |
+ |
if (childpid != -1) { |
706 |
+ |
fprintf(stderr, "%s: too many calculations\n", progname); |
707 |
+ |
exit(1); |
708 |
+ |
} |
709 |
+ |
strcpy(combuf, prog); |
710 |
+ |
strcat(combuf, args); |
711 |
+ |
cp = combuf; |
712 |
+ |
wp = argv; |
713 |
+ |
for ( ; ; ) { |
714 |
+ |
while (isspace(*cp)) cp++; |
715 |
+ |
if (!*cp) break; |
716 |
+ |
*wp++ = cp; |
717 |
+ |
while (!isspace(*cp)) |
718 |
+ |
if (!*cp++) goto done; |
719 |
+ |
*cp++ = '\0'; |
720 |
+ |
} |
721 |
+ |
done: |
722 |
+ |
*wp = NULL; |
723 |
+ |
/* start process */ |
724 |
+ |
if ((rval = open_process(PDesc, argv)) < 0) |
725 |
+ |
syserror(); |
726 |
+ |
if (rval == 0) { |
727 |
+ |
fprintf(stderr, "%s: command not found\n", argv[0]); |
728 |
+ |
exit(1); |
729 |
+ |
} |
730 |
+ |
packsiz = rval/(6*sizeof(float)) - 1; |
731 |
+ |
if (packsiz > PACKSIZ) |
732 |
+ |
packsiz = PACKSIZ; |
733 |
+ |
queuesiz = 0; |
734 |
+ |
} |
735 |
+ |
|
736 |
+ |
|
737 |
+ |
caldone() /* done with calculation */ |
738 |
+ |
{ |
739 |
+ |
if (childpid == -1) |
740 |
+ |
return; |
741 |
+ |
clearqueue(); |
742 |
+ |
close_process(PDesc); |
743 |
+ |
childpid = -1; |
744 |
+ |
} |
745 |
+ |
|
746 |
+ |
|
747 |
+ |
rcalfill(x, y) /* fill with ray-calculated pixel */ |
748 |
+ |
int x, y; |
749 |
+ |
{ |
750 |
+ |
if (queuesiz >= packsiz) /* flush queue if needed */ |
751 |
+ |
clearqueue(); |
752 |
+ |
/* add position to queue */ |
753 |
+ |
queue[queuesiz][0] = x; |
754 |
+ |
queue[queuesiz][1] = y; |
755 |
+ |
queuesiz++; |
756 |
+ |
} |
757 |
+ |
|
758 |
+ |
|
759 |
+ |
clearqueue() /* process queue */ |
760 |
+ |
{ |
761 |
+ |
FVECT orig, dir; |
762 |
+ |
float fbuf[6*(PACKSIZ+1)]; |
763 |
+ |
register float *fbp; |
764 |
+ |
register int i; |
765 |
+ |
|
766 |
+ |
fbp = fbuf; |
767 |
+ |
for (i = 0; i < queuesiz; i++) { |
768 |
+ |
viewray(orig, dir, &ourview, |
769 |
+ |
(queue[i][0]+.5)/hresolu, |
770 |
+ |
(queue[i][1]+.5)/vresolu); |
771 |
+ |
*fbp++ = orig[0]; *fbp++ = orig[1]; *fbp++ = orig[2]; |
772 |
+ |
*fbp++ = dir[0]; *fbp++ = dir[1]; *fbp++ = dir[2]; |
773 |
+ |
} |
774 |
+ |
/* mark end and get results */ |
775 |
+ |
bzero((char *)fbp, 6*sizeof(float)); |
776 |
+ |
if (process(PDesc, fbuf, fbuf, 4*sizeof(float)*queuesiz, |
777 |
+ |
6*sizeof(float)*(queuesiz+1)) != |
778 |
+ |
4*sizeof(float)*queuesiz) { |
779 |
+ |
fprintf(stderr, "%s: error reading from rtrace process\n", |
780 |
+ |
progname); |
781 |
+ |
exit(1); |
782 |
+ |
} |
783 |
+ |
fbp = fbuf; |
784 |
+ |
for (i = 0; i < queuesiz; i++) { |
785 |
+ |
if (ourexp > 0 && ourexp != 1.0) { |
786 |
+ |
fbp[0] *= ourexp; |
787 |
+ |
fbp[1] *= ourexp; |
788 |
+ |
fbp[2] *= ourexp; |
789 |
+ |
} |
790 |
+ |
setcolr(pscan(queue[i][1])[queue[i][0]], |
791 |
+ |
fbp[0], fbp[1], fbp[2]); |
792 |
+ |
zscan(queue[i][1])[queue[i][0]] = fbp[3]; |
793 |
+ |
fbp += 4; |
794 |
+ |
} |
795 |
+ |
queuesiz = 0; |
796 |
+ |
} |
797 |
+ |
|
798 |
+ |
|
799 |
+ |
syserror() /* report error and exit */ |
800 |
+ |
{ |
801 |
+ |
perror(progname); |
802 |
+ |
exit(1); |
803 |
|
} |