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/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
#ifndef DIMENSIONXX_COLOR_HPP
#define DIMENSIONXX_COLOR_HPP
// Wrappers for libdimension colors.
namespace Dimension
{
// Forward declarations
class CIE_XYZ;
class CIE_xyY;
class CIE_Lab;
class CIE_Luv;
class sRGB;
// Default whitepoint (D50)
extern const CIE_XYZ whitepoint;
// Wrapper for dmnsn_color
class Color
{
public:
Color() { }
inline Color(const CIE_XYZ& XYZ);
inline Color(const CIE_xyY& xyY);
inline Color(const CIE_Lab& Lab, const CIE_XYZ& white = whitepoint);
inline Color(const CIE_Luv& Luv, const CIE_XYZ& white = whitepoint);
inline Color(const sRGB& RGB);
explicit Color(dmnsn_color c) : m_color(c) { }
// Color(const Color& c);
// ~Color();
// Get and set filtered and unfiltered transparancy
double filter() const { return m_color.filter; }
double trans() const { return m_color.trans; }
double filter(double f) { m_color.filter = f; }
double trans(double t) { m_color.trans = t; }
// Color& operator=(const Color& c);
// Add a color to this one in a perceptually correct manner
Color& operator+=(const Color& c)
{ m_color = dmnsn_color_add(m_color, c.m_color); return *this; }
// Access the wrapped color
dmnsn_color dmnsn() const { return m_color; }
private:
dmnsn_color m_color;
};
// Wrappers for all libdimension color types
class CIE_XYZ
{
public:
CIE_XYZ() { }
CIE_XYZ(double X, double Y, double Z)
{ m_XYZ.X = X; m_XYZ.Y = Y; m_XYZ.Z = Z; }
CIE_XYZ(const Color& c) : m_XYZ(dmnsn_XYZ_from_color(c.dmnsn())) { }
explicit CIE_XYZ(dmnsn_CIE_XYZ XYZ) : m_XYZ(XYZ) { }
// CIE_XYZ(const CIE_XYZ& XYZ);
// ~CIE_XYZ();
double X() const { return m_XYZ.X; }
double Y() const { return m_XYZ.Y; }
double Z() const { return m_XYZ.Z; }
// CIE_XYZ& operator=(const CIE_XYZ& XYZ);
CIE_XYZ& operator=(const Color& c)
{ m_XYZ = dmnsn_XYZ_from_color(c.dmnsn()); }
dmnsn_CIE_XYZ dmnsn() const { return m_XYZ; }
private:
dmnsn_CIE_XYZ m_XYZ;
};
class CIE_xyY
{
public:
CIE_xyY() { }
CIE_xyY(double x, double y, double Y)
{ m_xyY.x = x; m_xyY.y = y; m_xyY.Y = Y; }
CIE_xyY(const Color& c) : m_xyY(dmnsn_xyY_from_color(c.dmnsn())) { }
explicit CIE_xyY(dmnsn_CIE_xyY xyY) : m_xyY(xyY) { }
// CIE_xyY(const CIE_xyY& xyY);
// ~CIE_xyY();
double x() const { return m_xyY.x; }
double y() const { return m_xyY.y; }
double Y() const { return m_xyY.Y; }
// CIE_xyY& operator=(const CIE_xyY& xyY);
CIE_xyY& operator=(const Color& c)
{ m_xyY = dmnsn_xyY_from_color(c.dmnsn()); }
dmnsn_CIE_xyY dmnsn() const { return m_xyY; }
private:
dmnsn_CIE_xyY m_xyY;
};
class CIE_Lab
{
public:
CIE_Lab() { }
CIE_Lab(double L, double a, double b)
{ m_Lab.L = L; m_Lab.a = a; m_Lab.b = b; }
CIE_Lab(const Color& c, const CIE_XYZ& white = whitepoint)
: m_Lab(dmnsn_Lab_from_color(c.dmnsn(), white.dmnsn())) { }
explicit CIE_Lab(dmnsn_CIE_Lab Lab) : m_Lab(Lab) { }
// CIE_Lab(const CIE_Lab& Lab);
// ~CIE_Lab();
double L() const { return m_Lab.L; }
double a() const { return m_Lab.a; }
double b() const { return m_Lab.b; }
// CIE_Lab& operator=(const CIE_Lab& Lab);
CIE_Lab& operator=(const Color& c)
{ m_Lab = dmnsn_Lab_from_color(c.dmnsn(), whitepoint.dmnsn()); }
dmnsn_CIE_Lab dmnsn() const { return m_Lab; }
private:
dmnsn_CIE_Lab m_Lab;
};
class CIE_Luv
{
public:
CIE_Luv() { }
CIE_Luv(double L, double u, double v)
{ m_Luv.L = L; m_Luv.u = u; m_Luv.v = v; }
CIE_Luv(const Color& c, const CIE_XYZ& white = whitepoint)
: m_Luv(dmnsn_Luv_from_color(c.dmnsn(), white.dmnsn())) { }
explicit CIE_Luv(dmnsn_CIE_Luv Luv) : m_Luv(Luv) { }
// CIE_Luv(const CIE_Luv& Luv);
// ~CIE_Luv();
double L() const { return m_Luv.L; }
double u() const { return m_Luv.u; }
double v() const { return m_Luv.v; }
// CIE_Luv& operator=(const CIE_Luv& Luv);
CIE_Luv& operator=(const Color& c)
{ m_Luv = dmnsn_Luv_from_color(c.dmnsn(), whitepoint.dmnsn()); }
dmnsn_CIE_Luv dmnsn() const { return m_Luv; }
private:
dmnsn_CIE_Luv m_Luv;
};
class sRGB
{
public:
sRGB() { }
sRGB(double R, double G, double B)
{ m_RGB.R = R; m_RGB.G = G; m_RGB.B = B; }
sRGB(const Color& c) : m_RGB(dmnsn_sRGB_from_color(c.dmnsn())) { }
explicit sRGB(dmnsn_sRGB RGB) : m_RGB(RGB) { }
// sRGB(const sRGB& RGB);
// ~sRGB();
double R() const { return m_RGB.R; }
double G() const { return m_RGB.G; }
double B() const { return m_RGB.B; }
// sRGB& operator=(const sRGB& RGB);
sRGB& operator=(const Color& c)
{ m_RGB = dmnsn_sRGB_from_color(c.dmnsn()); }
dmnsn_sRGB dmnsn() const { return m_RGB; }
private:
dmnsn_sRGB m_RGB;
};
// Color inline constructors
inline Color::Color(const CIE_XYZ& XYZ)
: m_color(dmnsn_color_from_XYZ(XYZ.dmnsn())) { }
inline Color::Color(const CIE_xyY& xyY)
: m_color(dmnsn_color_from_xyY(xyY.dmnsn())) { }
inline Color::Color(const CIE_Lab& Lab, const CIE_XYZ& white)
: m_color(dmnsn_color_from_Lab(Lab.dmnsn(), white.dmnsn())) { }
inline Color::Color(const CIE_Luv& Luv, const CIE_XYZ& white)
: m_color(dmnsn_color_from_Luv(Luv.dmnsn(), white.dmnsn())) { }
inline Color::Color(const sRGB& RGB)
: m_color(dmnsn_color_from_sRGB(RGB.dmnsn())) { }
// Color operators
// Perceptually correct color combination
inline Color
operator+(const Color& lhs, const Color& rhs)
{
Color temp = lhs;
temp += rhs;
return temp;
}
// Perceptual color difference
inline double
operator-(const Color& lhs, const Color& rhs)
{
return dmnsn_color_difference(lhs.dmnsn(), rhs.dmnsn());
}
}
#endif /* DIMENSIONXX_COLOR_HPP */
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