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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
#include <cstdio>
#include <string>
#include <vector>
#include <cstdlib>
#include <algorithm>
#include <stdint.h>
#include <QtGui/QImage>
#include <QtGui/QPainter>
#include <sys/stat.h>
#include <sys/types.h>
#include <cmath>
void printUsage(char const *programName)
{
printf("Usage:\n"
"\t%s join add.png blend.png premult.png\n"
//"\t%s split premult.png add.png blend.png\n"
"\t\t--no-crush: Don't crush modified png files.\n"
"\n"
"Join merges add.png and blend.png into premult.png. Split splits\n"
"premult.png into add.png and blend.png. Splitting just guesses how to\n"
"split.\n"
"\n", programName/*, programName*/);
}
bool shouldCrush = true;
void crushPng(std::string const &pngFilename)
{
if (!shouldCrush)
{
return;
}
/*
system(("pngcrush -o9 " + pngFilename + " TEMPORARY_FILE.png > /dev/null 2> /dev/null").c_str());
system( "advpng -z4 TEMPORARY_FILE.png > /dev/null 2> /dev/null");
system(("mv TEMPORARY_FILE.png " + pngFilename + " > /dev/null 2> /dev/null").c_str());
*/
system(("optipng -o7 " + pngFilename + " > /dev/null 2> /dev/null").c_str());
system(("advpng -z4 " + pngFilename + " > /dev/null 2> /dev/null").c_str());
}
struct Pix
{
Pix() {}
Pix(unsigned argb)
{
unsigned char aa = argb>>24;
unsigned char rr = argb>>16;
unsigned char gg = argb>>8;
unsigned char bb = argb;
a = aa/255.;
r = rr/255.;
g = gg/255.;
b = bb/255.;
}
unsigned val() const
{
int aa = std::min(std::max<int>(a*255. + .5, 0), 255);
int rr = std::min(std::max<int>(r*255. + .5, 0), 255);
int gg = std::min(std::max<int>(g*255. + .5, 0), 255);
int bb = std::min(std::max<int>(b*255. + .5, 0), 255);
return aa<<24 | rr<<16 | gg<<8 | bb;
}
double a, r, g, b;
};
int main(int argc, char **argv)
{
char const *programName = argv[0];
if (argc >= 2 && std::string(argv[1]) == "--no-crush")
{
--argc;
++argv;
shouldCrush = false;
}
if (argc != 5)
{
printUsage(programName);
return 1;
}
std::string action = argv[1];
if (action == "split")
{
printf("split not implemented\n");
}
else if (action == "join")
{
std::string nAdd = argv[2];
std::string nBlend = argv[3];
std::string nPremult = argv[4];
QImage add(nAdd.c_str());
QImage blend(nBlend.c_str());
add = add.convertToFormat(QImage::Format_ARGB32);
blend = blend.convertToFormat(QImage::Format_ARGB32);
QImage premult(add.width(), add.height(), QImage::Format_ARGB32);
QImage premultOnBlack(add.width(), add.height(), QImage::Format_ARGB32);
QImage premultOnTexture(add.width(), add.height(), QImage::Format_ARGB32);
if (blend.size() != add.size())
{
printf("Input files not same dimensions, %s = (%d, %d), %s = (%d, %d).\n", nAdd.c_str(), add.width(), add.height(), nBlend.c_str(), blend.width(), blend.height());
return 1;
}
//premult = blend;
//premult.convertToFormat(QImage::Format_ARGB32_Premultiplied);
for (int y = 0; y < add.height(); ++y)
for (int x = 0; x < add.width(); ++x)
{
Pix a(add.pixel(x, y));
Pix b(blend.pixel(x, y));
Pix p;
p.a = b.a;
p.r = a.r*(1 - b.a) + b.r*b.a;
p.g = a.g*(1 - b.a) + b.g*b.a;
p.b = a.b*(1 - b.a) + b.b*b.a;
premult.setPixel(x, y, p.val());
Pix texture;
/*texture.r = ((x^y)&8)? 0.25 : 0.75;
texture.g = ((x-y)&8)? 0.25 : 0.75;
texture.b = ((x+y+4)&8)? 0.25 : 0.75;*/
texture.r = .5 + .25*sin(x*2*355/113./30)*sin(y*2*355/113./30);
texture.g = .5 + .25*sin((x+y)*2*355/113./30);
texture.b = .5 + .25*sin((x-y)*2*355/113./30);
/*
Pix pOnBlack;
pOnBlack.a = 1;
pOnBlack.r = p.r;
pOnBlack.g = p.g;
pOnBlack.b = p.b;
premult.setPixel(x, y, pOnBlack.val());
Pix pOnTexture;
pOnTexture.a = 1;
pOnTexture.r = texture.r*(1 - p.a) + p.r;
pOnTexture.g = texture.g*(1 - p.a) + p.g;
pOnTexture.b = texture.b*(1 - p.a) + p.b;
premult.setPixel(x, y, pOnTexture.val());
//*/
}
premult.save(nPremult.c_str());
if (shouldCrush)
crushPng(nPremult.c_str());
}
else
{
printUsage(programName);
return 1;
}
}
|
