ColorTools.h

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// SPDX-FileCopyrightText: The Bio++ Development Group
//
// SPDX-License-Identifier: CECILL-2.1

#ifndef BPP_GRAPHICS_COLORTOOLS_H
#define BPP_GRAPHICS_COLORTOOLS_H


#include "../Exceptions.h"
#include "../Text/TextTools.h"
#include "RgbColor.h"

namespace bpp
{
class ColorTools
{
public:
  ColorTools() {}
  virtual ~ColorTools() {}

public:
  static std::vector<RGBColor> gradient(unsigned int n, const RGBColor& low, const RGBColor& high);

  static std::vector<RGBColor> gradient(unsigned int n, const RGBColor& low, const RGBColor& mid, const RGBColor& high);

  static RGBColor gray(double level)
  {
    unsigned int i = (unsigned int)round(255 * level);
    return RGBColor(i, i, i);
  }

  static RGBColor cmyk2rgb(double c, double m, double y, double k)
  {
    unsigned int r = static_cast<unsigned int>(round(255 * (1. - c) * (1. - k)));
    unsigned int g = static_cast<unsigned int>(round(255 * (1. - m) * (1. - k)));
    unsigned int b = static_cast<unsigned int>(round(255 * (1. - y) * (1. - k)));
    return RGBColor(r, g, b);
  }

public:
  static const RGBColor RED;
  static const RGBColor GREEN;
  static const RGBColor BLUE;
  static const RGBColor BLACK;
  static const RGBColor WHITE;
  static const RGBColor YELLOW;
  static const RGBColor CYAN;
  static const RGBColor MAGENTA;
  static const RGBColor ORANGE;
};
} // end of namespace bpp.
#endif // BPP_GRAPHICS_COLORTOOLS_H