Diffpack Documentation

---

              Search  

---

ColorScale.h

Go to the documentation of this file.

struct Color

{
  real r, g, b;   

  Color ()                                        { r=g=b=0; }

  Color (real c)                                  { r=g=b=c; }
  Color (real rr, double gg, double bb)           { r=rr; g=gg; b=bb; }
  Color (const Color& c)                          { r=c.r; g=c.g; b=c.b; }

  void operator = (const Color& c)                { r=c.r; g=c.g; b=c.b; }

  void setColor (const Color& c)                  { r=c.r; g=c.g; b=c.b; }
  void setColor (real rr, real gg, real bb)       { r=rr; g=gg; b=bb; }
  void setColor (real c)                          { r=g=b=c; }

  void print (Os out) {
    out->getFormat()==BINARY?out<<r<<g<<b:out<<r<<nl<<g<<nl<<b<<nl; }
  void scan  (Is in )                              { in >> r >> b >> g; }

  bool isBlack()         { return getbool(r==0 && g==0 && b==0); }
  bool isGray()          { return getbool(r==g && g==b && b==r); }
};


struct ColorScale

{
  Color low;
  Color high;

  real min_value;
  real max_value;


  void rgb2ihs
     (
      const real& r,
      const real& g,
      const real& b,
            real& i,
            real& h,
            real& s
     );

  void ihs2rgb
     (
      const real& i,
      const real& h,
      const real& s,
            real& r,
            real& g,
            real& b
     );

  Color ihs_interpolation
     (
      const real& value
     );



  void rgb2cie
     (
      const real& r,
               const real& g,
               const real& b,
                     real& x,
                     real& y,
                     real& z
     );

  void cie2rgb
     (
      const real& l,
      const real& u,
      const real& v,
            real& x,
            real& y,
            real& z
     );

  Color cie_interpolation
     (
      const real& value
     );



  void rgb2luv
     (
      const real& r,
      const real& g,
      const real& b,
            real& l,
            real& u,
            real& v
     );

  void luv2rgb
     (
      const real& l,
      const real& u,
      const real& v,
            real& r,
            real& g,
            real& b
     );

  Color luv_interpolation
     (
      const real& value
     );



  
  Color getColor
     (
      const real& value,
      const char* colorspace = "CIE" 
     );
};

---