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
|
/*
common/color.h
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#ifndef __INCLUDED_MATH_COLOR_H__
#define __INCLUDED_MATH_COLOR_H__
#include <iostream>
namespace math
{
/// a class representing an RGBA color value
class Color
{
public:
Color();
Color(const float, float const, const float, const float=1.0f);
Color(const float, const float=1.0f);
Color(const Color &);
float red() const;
float green() const;
float blue() const;
float alpha() const;
const Color &operator=(const Color &);
Color operator*(const float scalar) const;
// Some default colors
static const Color Black() { return Color(0.0f); };
static const Color White() { return Color(1.0f); };
static const Color Red() { return Color(1.0f,0.0f,0.0f); };
static const Color Green() { return Color(0.0f,1.0f,0.0f); };
static const Color Blue() { return Color(0.0f, 0.0f, 1.0f); };
static const Color Yellow() { return Color(1.0f, 1.0f, 0.0f); };
float &r;
float &g;
float &b;
float &a;
private:
void normalize();
float _r, _g, _b, _a;
};
std::ostream &operator<<(std::ostream &os, const Color &c);
std::istream &operator>>(std::istream & is, Color & color);
Color operator*(const float scalar, const Color& color);
} // namespace math
#endif // __INCLUDED_MATH_COLOR_H__
|
