TColor

class TColor : public TNamed

    private:

                void Allocate()
      static Float_t HLStoRGB1(Float_t rn1, Float_t rn2, Float_t huei)

    public:

                         TColor()
                         TColor(Int_t color, Float_t r, Float_t g, Float_t b, const char* name = "", Float_t a = 1)
                         TColor(const TColor& color)
                 virtual ~TColor()
             const char* AsHexString() const
          static TClass* Class()
            virtual void Copy(TObject& color) const
                 Float_t GetAlpha() const
                 Float_t GetBlue() const
            static Int_t GetColor(const char* hexcolor)
            static Int_t GetColor(Float_t r, Float_t g, Float_t b)
            static Int_t GetColor(Int_t r, Int_t g, Int_t b)
            static Int_t GetColor(ULong_t pixel)
                 Float_t GetGreen() const
            virtual void GetHLS(Float_t& h, Float_t& l, Float_t& s) const
                 Float_t GetHue() const
                 Float_t GetLight() const
                   Int_t GetNumber() const
                 ULong_t GetPixel() const
                 Float_t GetRed() const
            virtual void GetRGB(Float_t& r, Float_t& g, Float_t& b) const
                 Float_t GetSaturation() const
             static void HLS2RGB(Float_t h, Float_t l, Float_t s, Float_t& r, Float_t& g, Float_t& b)
             static void HLS2RGB(Int_t h, Int_t l, Int_t s, Int_t& r, Int_t& g, Int_t& b)
             static void HLStoRGB(Float_t h, Float_t l, Float_t s, Float_t& r, Float_t& g, Float_t& b)
         virtual TClass* IsA() const
            virtual void ls(Option_t* option = "") const
          static ULong_t Number2Pixel(Int_t ci)
                 TColor& operator=(const TColor&)
             static void Pixel2RGB(ULong_t pixel, Int_t& r, Int_t& g, Int_t& b)
             static void Pixel2RGB(ULong_t pixel, Float_t& r, Float_t& g, Float_t& b)
      static const char* PixelAsHexString(ULong_t pixel) const
            virtual void Print(Option_t* option = "") const
             static void RGB2HLS(Float_t r, Float_t g, Float_t b, Float_t& h, Float_t& l, Float_t& s)
             static void RGB2HLS(Int_t r, Int_t g, Int_t b, Int_t& h, Int_t& l, Int_t& s)
          static ULong_t RGB2Pixel(Int_t r, Int_t g, Int_t b)
          static ULong_t RGB2Pixel(Float_t r, Float_t g, Float_t b)
             static void RGBtoHLS(Float_t r, Float_t g, Float_t b, Float_t& h, Float_t& l, Float_t& s)
             static void SaveColor(ofstream& out, Int_t ci)
            virtual void SetRGB(Float_t r, Float_t g, Float_t b)
            virtual void ShowMembers(TMemberInspector& insp, char* parent)
            virtual void Streamer(TBuffer& b)
                    void StreamerNVirtual(TBuffer& b)

Data Members

    private:

        Int_t fNumber      Color number identifier
      Float_t fRed         Fraction of Red
      Float_t fGreen       Fraction of Green
      Float_t fBlue        Fraction of Blue
      Float_t fHue         Hue
      Float_t fLight       Light
      Float_t fSaturation  Saturation
      Float_t fAlpha       Alpha (transparency)

Class Description

                                                                      
 TColor                                                               
                                                                      
 Color defined by RGB or HLS.                                         
 At initialization time, a table of colors is generated. This linked  
 list can be accessed from the ROOT object                            
 (see TROOT::GetListOfColors()). When a color is defined in the range 
 of [1,50], two "companion" colors are also defined:                  
    - the dark version (color_index + 100)                            
    - the bright version (color_index + 150)                          
 The dark and bright color are used to give 3-D effects when drawing  
 various boxes (see TWbox, TPave, TPaveText, TPaveLabel,etc).         
                                                                      
 This is the list of currently supported basic colors (here dark and  
 bright colors are not shown).                                        

 Default ctor.

 Normal color constructor. Initialize a color structure.
 Compute the RGB and HLS parameters

 Color destructor.

 Color copy ctor.

 Return color as hexidecimal string. This string can be directly passed
 to, for example, TGClient::GetColorByName(). String will be reused so
 copy immediately if needed.

 Copy this color to obj.

 Return pixel value corresponding to this color. This pixel value can
 be used in the GUI classes. This call does not work in batch mode since
 it needs to communicate with the graphics system.

 Static method to compute RGB from HLS. The l and s are between [0,1]
 and h is between [0,360]. The returned r,g,b triplet is between [0,1].

 Static method. Auxiliary to HLS2RGB().

 Static method to compute RGB from HLS. The h,l,s are between [0,255].
 The returned r,g,b triplet is between [0,255].

 List this color with its attributes.

 Dump this color with its attributes.

 Static method to compute HLS from RGB. The r,g,b triplet is between
 [0,1], hue is between [0,360], light and satur are [0,1].

 Static method to compute HLS from RGB. The r,g,b triplet is between
 [0,255], hue, light and satur are between [0,255].

 Initialize this color and its associated colors.

 Make this color known to the graphics system.

 Static method returning color number for color specified by
 hex color string of form: #rrggbb, where rr, gg and bb are in
 hex between [0,FF], e.g. "#c0c0c0".
 If specified color does not exist it will be created with as
 name "#rrggbb" with rr, gg and bb in hex between [0,FF].

 Static method returning color number for color specified by
 r, g and b. The r,g,b should be in the range [0,1].
 If specified color does not exist it will be created
 with as name "#rrggbb" with rr, gg and bb in hex between
 [0,FF].

 Static method returning color number for color specified by
 system dependent pixel value. Pixel values can be obtained, e.g.,
 from the GUI color picker.

 Static method returning color number for color specified by
 r, g and b. The r,g,b should be in the range [0,255].
 If the specified color does not exist it will be created
 with as name "#rrggbb" with rr, gg and bb in hex between
 [0,FF].

 Static method that given a color index number, returns the corresponding
 pixel value. This pixel value can be used in the GUI classes. This call
 does not work in batch mode since it needs to communicate with the
 graphics system.

 Convert r,g,b to graphics system dependent pixel value.
 The r,g,b triplet must be [0,1].

 Convert r,g,b to graphics system dependent pixel value.
 The r,g,b triplet must be [0,255].

 Convert machine dependent pixel value (obtained via RGB2Pixel or
 via Number2Pixel() or via TColor::GetPixel()) to r,g,b triplet.
 The r,g,b triplet will be [0,1].

 Convert machine dependent pixel value (obtained via RGB2Pixel or
 via Number2Pixel() or via TColor::GetPixel()) to r,g,b triplet.
 The r,g,b triplet will be [0,255].

 Convert machine dependent pixel value (obtained via RGB2Pixel or
 via Number2Pixel() or via TColor::GetPixel()) to a hexidecimal string.
 This string can be directly passed to, for example,
 TGClient::GetColorByName(). String will be reused so copy immediately
 if needed.

 Save a color with index > 228 as a C++ statement(s) on output stream out.

Inline Functions

               void GetRGB(Float_t& r, Float_t& g, Float_t& b) const
               void GetHLS(Float_t& h, Float_t& l, Float_t& s) const
              Int_t GetNumber() const
            Float_t GetRed() const
            Float_t GetGreen() const
            Float_t GetBlue() const
            Float_t GetHue() const
            Float_t GetLight() const
            Float_t GetSaturation() const
            Float_t GetAlpha() const
               void HLStoRGB(Float_t h, Float_t l, Float_t s, Float_t& r, Float_t& g, Float_t& b)
               void RGBtoHLS(Float_t r, Float_t g, Float_t b, Float_t& h, Float_t& l, Float_t& s)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
            TColor& operator=(const TColor&)