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/*
* Color_RGB.cc -- ePiX::RGB_Color
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.2.2
*
* Last Change: October 30, 2007
*/
/*
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
* Andrew D. Hwang <ahwang -at- holycross -dot- edu>
* Department of Mathematics and Computer Science
* College of the Holy Cross
* Worcester, MA, 01610-2395, USA
*
*/
/*
* ePiX is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* ePiX is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ePiX; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <sstream>
#include <string>
#include <vector>
#include <cmath>
#include "Color_Utils.h"
#include "Color_RGB.h"
namespace ePiX {
RGB_Color::RGB_Color(double r, double g, double b)
: red(make_r(r, g, b)), green(make_g(r, g, b)), blue(make_b(r, g, b)) { }
RGB_Color::RGB_Color(const RGB_Densities& s)
: red(s.m_dens_red), green(s.m_dens_green), blue(s.m_dens_blue) { }
Color_Base::RGB_Densities RGB_Color::to_rgb() const
{
return Color_Base::RGB_Densities(red, green, blue);
}
RGB_Color* RGB_Color::clone() const
{
return new RGB_Color(*this);
}
RGB_Color& RGB_Color::filter(const Color_Base& color)
{
Color_Base::RGB_Densities s(color.to_rgb());
red = std::min(red, s.m_dens_red);
green = std::min(green, s.m_dens_green);
blue = std::min(blue, s.m_dens_blue);
return *this;
}
RGB_Color& RGB_Color::operator*= (double c)
{
double r(red*c);
double g(green*c);
double b(blue*c);
red = make_r(r, g, b);
green = make_g(r, g, b);
blue = make_b(r, g, b);
return *this;
}
RGB_Color& RGB_Color::blend(const Color_Base& color, double d)
{
Color_Base::RGB_Densities s(color.to_rgb());
double wt(clip_to_unit(d));
red += wt*(s.m_dens_red - red);
green += wt*(s.m_dens_green - green);
blue += wt*(s.m_dens_blue - blue);
return *this;
}
RGB_Color& RGB_Color::superpose(const Color_Base& color)
{
Color_Base::RGB_Densities s(color.to_rgb());
red = clip_to_unit(red + s.m_dens_red);
green = clip_to_unit(green + s.m_dens_green);
blue = clip_to_unit(blue + s.m_dens_blue);
return *this;
}
RGB_Color& RGB_Color::invert()
{
red = 1 - red;
green = 1 - green;
blue = 1 - blue;
return *this;
}
std::string RGB_Color::model() const
{
return "rgb";
}
std::string RGB_Color::name() const
{
std::ostringstream nm;
nm << "rgb_" << dtohex(red) << dtohex(green) << dtohex(blue);
return nm.str();
}
std::vector<double> RGB_Color::densities() const
{
std::vector<double> val(3);
val.at(0) = rd(red);
val.at(1) = rd(green);
val.at(2) = rd(blue);
return val;
}
} // end of namespace
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