8 |
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*/ |
9 |
|
|
10 |
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#include <ctype.h> |
11 |
+ |
#include "paths.h" |
12 |
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#include "platform.h" |
13 |
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#include "standard.h" |
14 |
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#include "cmatrix.h" |
15 |
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#include "platform.h" |
16 |
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#include "resolu.h" |
17 |
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|
17 |
– |
char *progname; /* global argv[0] */ |
18 |
– |
|
18 |
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/* Sum together a set of images and write result to fout */ |
19 |
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static int |
20 |
|
sum_images(const char *fspec, const CMATRIX *cv, FILE *fout) |
21 |
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{ |
22 |
+ |
static int runcnt = 0; |
23 |
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int myDT = DTfromHeader; |
24 |
|
COLR *scanline = NULL; |
25 |
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CMATRIX *pmat = NULL; |
28 |
|
|
29 |
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if (cv->ncols != 1) |
30 |
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error(INTERNAL, "expected vector in sum_images()"); |
31 |
< |
for (i = 0; i < cv->nrows; i++) { |
32 |
< |
const COLORV *scv = cv_lval(cv,i); |
31 |
> |
for (i = cv->nrows; i-- > 0; ) { |
32 |
> |
const int r = runcnt&1 ? i : cv->nrows-1 - i; |
33 |
> |
const COLORV *scv = cv_lval(cv,r); |
34 |
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int flat_file = 0; |
35 |
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char fname[1024]; |
36 |
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FILE *fp; |
40 |
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char *err; |
41 |
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/* check for zero */ |
42 |
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if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) && |
43 |
< |
(myDT != DTfromHeader) | (i < cv->nrows-1)) |
43 |
> |
(myDT != DTfromHeader) | (i > 0)) |
44 |
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continue; |
45 |
|
/* open next picture */ |
46 |
< |
sprintf(fname, fspec, i); |
46 |
> |
sprintf(fname, fspec, r); |
47 |
|
if ((fp = fopen(fname, "rb")) == NULL) { |
48 |
|
sprintf(errmsg, "cannot open picture '%s'", fname); |
49 |
|
error(SYSTEM, errmsg); |
108 |
|
free(scanline); |
109 |
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i = cm_write(pmat, myDT, fout); /* write picture */ |
110 |
|
cm_free(pmat); /* free data */ |
111 |
+ |
++runcnt; /* for zig-zagging */ |
112 |
|
return(i); |
113 |
|
} |
114 |
|
|
179 |
|
CMATRIX *cmtx; /* component vector/matrix result */ |
180 |
|
char fnbuf[256]; |
181 |
|
int a, i; |
182 |
< |
|
183 |
< |
progname = argv[0]; |
182 |
> |
/* set global progname */ |
183 |
> |
fixargv0(argv[0]); |
184 |
|
/* get options */ |
185 |
|
for (a = 1; a < argc && argv[a][0] == '-'; a++) |
186 |
|
switch (argv[a][1]) { |