colormaps.h

来自「open lattice boltzmann project www.open」· C头文件 代码 · 共 133 行

/*  This file is part of the OpenLB library
 *
 *  Copyright (C) 2007 Jonas Latt
 *  Address: Rue General Dufour 24,  1211 Geneva 4, Switzerland 
 *  E-mail: [e-mail]
 *
 *  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_);
    virtual T operator() (T x) const;
    virtual LinearFunction<T>* clone() const;
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_);
    virtual T operator() (T x) const;
    virtual PowerLawFunction<T>* clone() const;
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();
    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);
    virtual T operator() (T x) const;
    virtual PiecewiseFunction<T>* clone() const;
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