/*
   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); };

private:
	void normalize();
	float _r, _g, _b, _a;
};

std::ostream &operator<<(std::ostream &os, const Color &c);

Color operator*(const float scalar, const Color& color);

} // namespace math

#endif // __INCLUDED_MATH_COLOR_H__