1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* blendcmaptest.c
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
#define NX 4
#define NY 5
#define FADE_FRACTION 0.75
main(int argc,
char **argv)
{
l_int32 i, j, sindex, wb, hb, ws, hs, delx, dely, x, y, y0;
PIX *pixs, *pixb, *pixt0, *pixt1;
PIXCMAP *cmap;
static char mainName[] = "blendcmaptest";
pixs = pixRead("rabi.png");
pixb = pixRead("weasel4.11c.png");
pixDisplayWrite(NULL, -1);
/* Fade the blender */
pixcmapShiftIntensity(pixGetColormap(pixb), FADE_FRACTION);
/* Downscale the input */
wb = pixGetWidth(pixb);
hb = pixGetHeight(pixb);
pixt0 = pixScaleToGray4(pixs);
/* Threshold to 5 levels, 4 bpp */
ws = pixGetWidth(pixt0);
hs = pixGetHeight(pixt0);
pixt1 = pixThresholdTo4bpp(pixt0, 5, 1);
pixDisplayWriteFormat(pixt1, 1, IFF_PNG);
pixDisplayWrite(pixb, 1);
cmap = pixGetColormap(pixt1);
pixcmapWriteStream(stderr, cmap);
/* Overwrite the white pixels (at sindex in pixt1) */
pixcmapGetIndex(cmap, 255, 255, 255, &sindex);
delx = ws / NX;
dely = hs / NY;
for (i = 0; i < NY; i++) {
y = 20 + i * dely;
if (y >= hs + hb)
continue;
for (j = 0; j < NX; j++) {
x = 30 + j * delx;
y0 = y;
if (j & 1) {
y0 = y + dely / 2;
if (y0 >= hs + hb)
continue;
}
if (x >= ws + wb)
continue;
pixBlendCmap(pixt1, pixb, x, y0, sindex);
}
}
pixDisplayWriteFormat(pixt1, 1, IFF_PNG);
cmap = pixGetColormap(pixt1);
pixcmapWriteStream(stderr, cmap);
system("gthumb junk_write_display* &");
pixDestroy(&pixs);
pixDestroy(&pixb);
pixDestroy(&pixt0);
pixDestroy(&pixt1);
return 0;
}
|
