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/* This file is part of the OpenLB library
*
* Copyright (C) 2007 Jonas Latt
* E-mail contact: info@openlb.net
* The most recent release of OpenLB can be downloaded at
* <http://www.openlb.net/>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef COLORMAPS_H
#define COLORMAPS_H
#include <string>
#include <vector>
namespace olb {
namespace graphics {
template <typename T>
struct ScalarFunction {
virtual ~ScalarFunction() { }
virtual T operator() (T x) const =0;
virtual ScalarFunction<T>* clone() const=0;
};
template <typename T>
class LinearFunction : public ScalarFunction<T> {
public:
LinearFunction(T x1_, T x2_, T y1_, T y2_);
T operator() (T x) const override;
LinearFunction<T>* clone() const override;
private:
T x1, x2, y1, y2;
};
template <typename T>
class PowerLawFunction : public ScalarFunction<T> {
public:
PowerLawFunction(T x1_, T x2_, T y1_, T y2_, T b_);
T operator() (T x) const override;
PowerLawFunction<T>* clone() const override;
private:
T x1, x2, y1, y2;
T b;
};
template <typename T>
struct Piece {
Piece(T closedBegin_, T openEnd_) : closedBegin(closedBegin_), openEnd(openEnd_)
{
}
T closedBegin, openEnd;
};
template <typename T>
class PiecewiseFunction : public ScalarFunction<T> {
public:
PiecewiseFunction() { }
~PiecewiseFunction() override;
PiecewiseFunction(PiecewiseFunction<T> const& rhs);
PiecewiseFunction<T>& operator=(PiecewiseFunction<T> const& rhs);
void swap(PiecewiseFunction<T>& rhs);
void addPiece(Piece<T> piece, ScalarFunction<T>* f);
T operator() (T x) const override;
PiecewiseFunction<T>* clone() const override;
private:
std::vector<Piece<T> > pieces;
std::vector<ScalarFunction<T>*> functions;
};
template <typename T>
struct rgb {
rgb(T r_, T g_, T b_) : r(r_), g(g_), b(b_)
{
}
T r,g,b;
};
template <typename T>
class ColorMap {
public:
ColorMap(PiecewiseFunction<T> const& red_,
PiecewiseFunction<T> const& green_,
PiecewiseFunction<T> const& blue_);
rgb<T> get(T x) const;
private:
PiecewiseFunction<T> red, green, blue;
};
namespace mapGenerators {
template <typename T> PiecewiseFunction<T> generateEarthRed();
template <typename T> PiecewiseFunction<T> generateEarthGreen();
template <typename T> PiecewiseFunction<T> generateEarthBlue();
template <typename T> PiecewiseFunction<T> generateWaterRed();
template <typename T> PiecewiseFunction<T> generateWaterGreen();
template <typename T> PiecewiseFunction<T> generateWaterBlue();
template <typename T> PiecewiseFunction<T> generateAirRed();
template <typename T> PiecewiseFunction<T> generateAirGreen();
template <typename T> PiecewiseFunction<T> generateAirBlue();
template <typename T> PiecewiseFunction<T> generateFireRed();
template <typename T> PiecewiseFunction<T> generateFireGreen();
template <typename T> PiecewiseFunction<T> generateFireBlue();
template <typename T> PiecewiseFunction<T> generateLeeLooRed();
template <typename T> PiecewiseFunction<T> generateLeeLooGreen();
template <typename T> PiecewiseFunction<T> generateLeeLooBlue();
template <typename T> ColorMap<T> generateMap(std::string mapName);
} // namespace mapGenerators
} // namespace graphics
} // namespace olb
#endif
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