/*
   math/color.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

// project headers
#include "math/color.h"

namespace math
{

Color::Color()
{
	_r = _g = _b = 0.0f;
	_a = 1.0f;
}

Color::Color(const float red, const float green , const float blue , const float alpha)
{
	_r = red;
	_g = green;
	_b = blue;
	_a = alpha;
}

Color::Color(const float grey, const float alpha)
{
	_r = _g = _b = grey;
	_a = alpha;
}

Color::Color(const Color &other)
{
	this->operator=(other);
}

const Color & Color::operator=(const Color &other)
{
	this->_r = other._r;
	this->_g = other._g;
	this->_b = other._b;
	this->_a = other._a;
	return (*this);
}

void Color::normalize()
{
	float tmp = _r;

	if (_g > tmp)
		tmp = _g;
	if (_b > tmp)
		tmp = _b;

	if (tmp > 1) {
		_r /= tmp;
		_g /= tmp;
		_b /= tmp;
	}
}

float Color::red() const
{
	return _r;
}

float Color::green() const
{
	return _g;
}

float Color::blue() const
{
	return _b;
}

float Color::alpha() const
{
	return _a;
}

Color Color::operator*(float scalar) const
{
	return Color(red()*scalar, green()*scalar, blue()*scalar, alpha());
}

Color operator*(float scalar, const Color& color)
{
	return color * scalar;
}
std::ostream &operator<<(std::ostream &os, const Color &c)
{
	os <<  c.red() << " " << c.green() << " " << c.blue() << " " << c.alpha();
	return os;
}

} // namespace math