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Reference Guide
TRadialGradient Class Reference

Define a radial color gradient

Definition at line 128 of file TColorGradient.h.

Public Types

enum  EGradientType { kSimple, kExtended }
 
- Public Types inherited from TColorGradient
enum  ECoordinateMode { kPadMode, kObjectBoundingMode }
 
typedef std::vector< Color_t >::size_type SizeType_t
 
- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 

Public Member Functions

 TRadialGradient ()
 
 TRadialGradient (Color_t newColor, UInt_t nPoints, const Double_t *points, const Color_t *colorIndices, ECoordinateMode mode=kObjectBoundingMode)
 Constructor. More...
 
 TRadialGradient (Color_t newColor, UInt_t nPoints, const Double_t *points, const Double_t *colors, ECoordinateMode mode=kObjectBoundingMode)
 Constructor. More...
 
const Point & GetCenter () const
 Get center. More...
 
const Point & GetEnd () const
 Get end. More...
 
EGradientType GetGradientType () const
 Get gradient type. More...
 
Double_t GetR1 () const
 
Double_t GetR2 () const
 Get R2. More...
 
Double_t GetRadius () const
 Get radius. More...
 
const Point & GetStart () const
 Get start. More...
 
void SetRadialGradient (const Point &center, Double_t radius)
 Set radial gradient. More...
 
void SetStartEndR1R2 (const Point &p1, Double_t r1, const Point &p2, Double_t r2)
 Set start and end R1 and R2. More...
 
- Public Member Functions inherited from TColorGradient
const Double_tGetColorPositions () const
 Get color positions. More...
 
const Double_tGetColors () const
 Get colors. More...
 
ECoordinateMode GetCoordinateMode () const
 Get coordinate mode. More...
 
SizeType_t GetNumberOfSteps () const
 Get number of steps. More...
 
void ResetColor (UInt_t nPoints, const Double_t *points, const Color_t *colorIndices)
 Reset color. More...
 
void ResetColor (UInt_t nPoints, const Double_t *points, const Double_t *colorIndices)
 Reset color. More...
 
void SetCoordinateMode (ECoordinateMode mode)
 Set coordinate mode. More...
 
- Public Member Functions inherited from TColor
 TColor ()
 Default constructor. More...
 
 TColor (const TColor &color)
 Color copy constructor. More...
 
 TColor (Float_t r, Float_t g, Float_t b, Float_t a=1)
 Fast TColor constructor. More...
 
 TColor (Int_t color, Float_t r, Float_t g, Float_t b, const char *name="", Float_t a=1)
 Normal color constructor. More...
 
virtual ~TColor ()
 Color destructor. More...
 
const char * AsHexString () const
 Return color as hexadecimal string. More...
 
void Copy (TObject &color) const
 Copy this color to obj. More...
 
Float_t GetAlpha () const
 
Float_t GetBlue () const
 
virtual Float_t GetGrayscale () const
 
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
 Return pixel value corresponding to this color. More...
 
Float_t GetRed () const
 
virtual void GetRGB (Float_t &r, Float_t &g, Float_t &b) const
 
Float_t GetSaturation () const
 
virtual void ls (Option_t *option="") const
 List this color with its attributes. More...
 
TColoroperator= (const TColor &color)
 
virtual void Print (Option_t *option="") const
 Dump this color with its attributes. More...
 
virtual void SetAlpha (Float_t a)
 
virtual void SetRGB (Float_t r, Float_t g, Float_t b)
 Initialize this color and its associated colors. More...
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
 TNamed (const TString &name, const TString &title)
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Private Attributes

Point fEnd
 
Double_t fR1 = 0.
 
Double_t fR2 = 0.
 
Point fStart
 
EGradientType fType = kSimple
 

Additional Inherited Members

- Static Public Member Functions inherited from TColor
static void CreateColorsCircle (Int_t offset, const char *name, UChar_t *rgb)
 Create the "circle" colors in the color wheel. More...
 
static void CreateColorsGray ()
 Create the Gray scale colors in the Color Wheel. More...
 
static void CreateColorsRectangle (Int_t offset, const char *name, UChar_t *rgb)
 Create the "rectangular" colors in the color wheel. More...
 
static void CreateColorWheel ()
 Static function steering the creation of all colors in the color wheel. More...
 
static Int_t CreateGradientColorTable (UInt_t Number, Double_t *Stops, Double_t *Red, Double_t *Green, Double_t *Blue, UInt_t NColors, Float_t alpha=1.)
 Static function creating a color table with several connected linear gradients. More...
 
static Bool_t DefinedColors ()
 Static function returning kTRUE if some new colors have been defined after initialisation or since the last call to this method. More...
 
static Int_t GetColor (const char *hexcolor)
 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. More...
 
static Int_t GetColor (Float_t r, Float_t g, Float_t b)
 Static method returning color number for color specified by r, g and b. More...
 
static Int_t GetColor (Int_t r, Int_t g, Int_t b)
 Static method returning color number for color specified by r, g and b. More...
 
static Int_t GetColor (ULong_t pixel)
 Static method returning color number for color specified by system dependent pixel value. More...
 
static Int_t GetColorBright (Int_t color)
 Static function: Returns the bright color number corresponding to n If the TColor object does not exist, it is created. More...
 
static Int_t GetColorDark (Int_t color)
 Static function: Returns the dark color number corresponding to n If the TColor object does not exist, it is created. More...
 
static Int_t GetColorPalette (Int_t i)
 Static function returning the color number i in current palette. More...
 
static Int_t GetColorTransparent (Int_t color, Float_t a)
 Static function: Returns the transparent color number corresponding to n. More...
 
static Int_t GetFreeColorIndex ()
 Static function: Returns a free color index which can be used to define a user custom color. More...
 
static Int_t GetNumberOfColors ()
 Static function returning number of colors in the color palette. More...
 
static const TArrayIGetPalette ()
 Static function returning the current active palette. More...
 
static void HLS2RGB (Float_t h, Float_t l, Float_t s, Float_t &r, Float_t &g, Float_t &b)
 Static method to compute RGB from HLS. More...
 
static void HLS2RGB (Int_t h, Int_t l, Int_t s, Int_t &r, Int_t &g, Int_t &b)
 Static method to compute RGB from HLS. More...
 
static void HLStoRGB (Float_t h, Float_t l, Float_t s, Float_t &r, Float_t &g, Float_t &b)
 
static void HSV2RGB (Float_t h, Float_t s, Float_t v, Float_t &r, Float_t &g, Float_t &b)
 Static method to compute RGB from HSV: More...
 
static void InitializeColors ()
 Initialize colors used by the TCanvas based graphics (via TColor objects). More...
 
static void InvertPalette ()
 Invert the current color palette. More...
 
static Bool_t IsGrayscale ()
 Return whether all colors return grayscale values. More...
 
static ULong_t Number2Pixel (Int_t ci)
 Static method that given a color index number, returns the corresponding pixel value. More...
 
static void Pixel2RGB (ULong_t pixel, Float_t &r, Float_t &g, Float_t &b)
 Convert machine dependent pixel value (obtained via RGB2Pixel or via Number2Pixel() or via TColor::GetPixel()) to r,g,b triplet. More...
 
static void Pixel2RGB (ULong_t pixel, Int_t &r, Int_t &g, Int_t &b)
 Convert machine dependent pixel value (obtained via RGB2Pixel or via Number2Pixel() or via TColor::GetPixel()) to r,g,b triplet. More...
 
static const char * PixelAsHexString (ULong_t pixel)
 Convert machine dependent pixel value (obtained via RGB2Pixel or via Number2Pixel() or via TColor::GetPixel()) to a hexadecimal string. More...
 
static void RGB2HLS (Float_t r, Float_t g, Float_t b, Float_t &h, Float_t &l, Float_t &s)
 Static method to compute HLS from RGB. More...
 
static void RGB2HLS (Int_t r, Int_t g, Int_t b, Int_t &h, Int_t &l, Int_t &s)
 Static method to compute HLS from RGB. More...
 
static void RGB2HSV (Float_t r, Float_t g, Float_t b, Float_t &h, Float_t &s, Float_t &v)
 Static method to compute HSV from RGB. More...
 
static ULong_t RGB2Pixel (Float_t r, Float_t g, Float_t b)
 Convert r,g,b to graphics system dependent pixel value. More...
 
static ULong_t RGB2Pixel (Int_t r, Int_t g, Int_t b)
 Convert r,g,b to graphics system dependent pixel value. More...
 
static void RGBtoHLS (Float_t r, Float_t g, Float_t b, Float_t &h, Float_t &l, Float_t &s)
 
static void SaveColor (std::ostream &out, Int_t ci)
 Save a color with index > 228 as a C++ statement(s) on output stream out. More...
 
static void SetColorThreshold (Float_t t)
 This method specifies the color threshold used by GetColor to retrieve a color. More...
 
static void SetGrayscale (Bool_t set=kTRUE)
 Set whether all colors should return grayscale values. More...
 
static void SetPalette (Int_t ncolors, Int_t *colors, Float_t alpha=1.)
 Static function. More...
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Protected Member Functions inherited from TColorGradient
 TColorGradient ()
 Constructor. More...
 
 TColorGradient (Color_t newColor, UInt_t nPoints, const Double_t *points, const Color_t *colorIndices, ECoordinateMode mode=kObjectBoundingMode)
 There is no way to validate parameters here, so it's up to user to pass correct arguments. More...
 
 TColorGradient (Color_t newColor, UInt_t nPoints, const Double_t *points, const Double_t *colors, ECoordinateMode mode=kObjectBoundingMode)
 There is no way to validate parameters here, so it's up to user to pass correct arguments. More...
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 
- Protected Attributes inherited from TColor
Int_t fNumber
 Color number identifier. More...
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 

#include <TColorGradient.h>

Inheritance diagram for TRadialGradient:
[legend]

Member Enumeration Documentation

◆ EGradientType

Enumerator
kSimple 
kExtended 

Definition at line 130 of file TColorGradient.h.

Constructor & Destructor Documentation

◆ TRadialGradient() [1/3]

TRadialGradient::TRadialGradient ( )

Definition at line 246 of file TColorGradient.cxx.

◆ TRadialGradient() [2/3]

TRadialGradient::TRadialGradient ( Color_t  newColor,
UInt_t  nPoints,
const Double_t points,
const Color_t colorIndices,
ECoordinateMode  mode = kObjectBoundingMode 
)

Constructor.

Definition at line 253 of file TColorGradient.cxx.

◆ TRadialGradient() [3/3]

TRadialGradient::TRadialGradient ( Color_t  newColor,
UInt_t  nPoints,
const Double_t points,
const Double_t colors,
ECoordinateMode  mode = kObjectBoundingMode 
)

Constructor.

Definition at line 262 of file TColorGradient.cxx.

Member Function Documentation

◆ GetCenter()

const TColorGradient::Point & TRadialGradient::GetCenter ( ) const

Get center.

Definition at line 335 of file TColorGradient.cxx.

◆ GetEnd()

const TColorGradient::Point & TRadialGradient::GetEnd ( ) const

Get end.

Definition at line 308 of file TColorGradient.cxx.

◆ GetGradientType()

TRadialGradient::EGradientType TRadialGradient::GetGradientType ( ) const

Get gradient type.

Definition at line 271 of file TColorGradient.cxx.

◆ GetR1()

Double_t TRadialGradient::GetR1 ( ) const

Definition at line 300 of file TColorGradient.cxx.

◆ GetR2()

Double_t TRadialGradient::GetR2 ( ) const

Get R2.

Definition at line 316 of file TColorGradient.cxx.

◆ GetRadius()

Double_t TRadialGradient::GetRadius ( ) const

Get radius.

Definition at line 343 of file TColorGradient.cxx.

◆ GetStart()

const TColorGradient::Point & TRadialGradient::GetStart ( ) const

Get start.

Definition at line 292 of file TColorGradient.cxx.

◆ SetRadialGradient()

void TRadialGradient::SetRadialGradient ( const Point &  center,
Double_t  radius 
)

Set radial gradient.

Definition at line 324 of file TColorGradient.cxx.

◆ SetStartEndR1R2()

void TRadialGradient::SetStartEndR1R2 ( const Point &  p1,
Double_t  r1,
const Point &  p2,
Double_t  r2 
)

Set start and end R1 and R2.

Definition at line 279 of file TColorGradient.cxx.

Member Data Documentation

◆ fEnd

Point TRadialGradient::fEnd
private

Definition at line 164 of file TColorGradient.h.

◆ fR1

Double_t TRadialGradient::fR1 = 0.
private

Definition at line 163 of file TColorGradient.h.

◆ fR2

Double_t TRadialGradient::fR2 = 0.
private

Definition at line 165 of file TColorGradient.h.

◆ fStart

Point TRadialGradient::fStart
private

Definition at line 162 of file TColorGradient.h.

◆ fType

EGradientType TRadialGradient::fType = kSimple
private

Definition at line 167 of file TColorGradient.h.


The documentation for this class was generated from the following files: