PhxColor.h

#ifndef PHX_COLOR_H
#define PHX_COLOR_H

namespace Phx {

  class RgbColor {
  public:
    RgbColor() : mRed(1), mGreen(1), mBlue(1) {}
      
    RgbColor(double r, double g, double b) :
      mRed(clamp(r)), mGreen(clamp(g)), mBlue(clamp(b)) {
    }
    
    // default assignment/copy okay
    
    double red() const { return mRed; }
    double green() const { return mGreen; }
    double blue() const { return mBlue; }
    
    void red(double red) { mRed = clamp(red); }
    void green(double green) { mGreen = clamp(green); }
    void blue(double blue) { mBlue = clamp(blue); }

  protected:
    double clamp(double v) { return (v > 1.0) ? 1.0 : ((v < 0.0) ? 0.0 : v); }
  private:
    double mRed, mGreen, mBlue;
  };

  
  class RgbaColor : public RgbColor {
  public:
    RgbaColor() : RgbColor(), mAlpha(1) {}
    
    RgbaColor(double r, double g, double b, double a = 1) :
      RgbColor(r,g,b), mAlpha(clamp(a)) {
    }
    
    RgbaColor(const RgbColor& rgb, double a = 1) :
      RgbColor(rgb), mAlpha(clamp(a)) {
    }
    
    // default assignment/copy okay
    
    double alpha() const { return mAlpha; }
    void alpha(double alpha) { mAlpha = clamp(alpha); }
    
  private:
    double mAlpha;
  };
  
  
}; // namespace Phx

#endif /* PHX_COLOR_H */

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