-
Notifications
You must be signed in to change notification settings - Fork 3
/
colorspace.cpp
75 lines (65 loc) · 1.13 KB
/
colorspace.cpp
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
#include "colorspace.h"
ColorSpace::ColorSpace()
{
}
float ColorSpace::getH()
{
float h;
if (getC() == 0.0f)
{
return 0.5f;
}
if (red == getZ())
{
h = ((float)(grn - blue) / getC() + 6.0f);
while (h > 6.0f)
{
h = h - 6.0f;
}
} else if (grn == getZ())
{
h = (blue - red) / getC() + 2.0f;
} else {
h = (red - grn) / getC() + 4.0f;
}
return h / 6.0f;
}
void ColorSpace::setHsz(float h, float s, float z)
{
h = 6.0f * (h - (float)floor(h));
float a = z * (1 - s);
float b = z * (1 - s * (1 - fabs(((int)h + 5) % 2 - 1)));
switch ((int)h)
{
case 0:
red = z;
grn = b;
blue = a;
break;
case 1:
red = b;
grn = z;
blue = a;
break;
case 2:
red = a;
grn = z;
blue = b;
break;
case 3:
red = a;
grn = b;
blue = z;
break;
case 4:
red = b;
grn = a;
blue = z;
break;
case 5:
red = z;
grn = a;
blue = b;
break;
}
}