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TEveRGBAPalette.h
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TEveRGBAPalette.h
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// @(#)root/eve:$Id$
// Authors: Matevz Tadel & Alja Mrak-Tadel: 2006, 2007
/*************************************************************************
* Copyright (C) 1995-2007, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TEveRGBAPalette
#define ROOT_TEveRGBAPalette
#include "TEveUtil.h"
#include "TObject.h"
#include "TQObject.h"
#include "TMath.h"
class TEveRGBAPalette : public TObject,
public TQObject,
public TEveRefCnt
{
friend class TEveRGBAPaletteEditor;
friend class TEveRGBAPaletteSubEditor;
friend class TEveRGBAPaletteOverlay;
public:
enum ELimitAction_e { kLA_Cut, kLA_Mark, kLA_Clip, kLA_Wrap };
private:
TEveRGBAPalette(const TEveRGBAPalette&); // Not implemented
TEveRGBAPalette& operator=(const TEveRGBAPalette&); // Not implemented
protected:
Double_t fUIf; // UI representation calculated as: d = fUIf*i + fUIc
Double_t fUIc; // UI representation calculated as: d = fUIf*i + fUIc
Int_t fLowLimit; // Low limit for Min/Max values (used by editor)
Int_t fHighLimit; // High limit for Min/Max values (used by editor)
Int_t fMinVal;
Int_t fMaxVal;
Bool_t fUIDoubleRep; // Represent UI parts with real values.
Bool_t fInterpolate; // Interpolate colors for signal values.
Bool_t fShowDefValue; // Flags whether signals with default value should be shown.
Bool_t fFixColorRange; // If true, map palette to low/high limit otherwise to min/max value.
Int_t fUnderflowAction;
Int_t fOverflowAction;
Color_t fDefaultColor; // Color for when value is not specified
UChar_t fDefaultRGBA[4];
Color_t fUnderColor; // Underflow color
UChar_t fUnderRGBA[4];
Color_t fOverColor; // Overflow color
UChar_t fOverRGBA[4];
mutable Int_t fNBins; // Number of signal-color entries.
mutable Int_t fCAMin; // Minimal signal in color-array.
mutable Int_t fCAMax; // Maximal signal in color-array.
mutable UChar_t* fColorArray; //[4*fNBins]
void SetupColor(Int_t val, UChar_t* pix) const;
Double_t IntToDouble(Int_t i) const { return fUIf*i + fUIc; }
Int_t DoubleToInt(Double_t d) const { return TMath::Nint((d - fUIc) / fUIf); }
Double_t GetCAMinAsDouble() const { return IntToDouble(fCAMin); }
Double_t GetCAMaxAsDouble() const { return IntToDouble(fCAMax); }
static TEveRGBAPalette* fgDefaultPalette;
public:
TEveRGBAPalette();
TEveRGBAPalette(Int_t min, Int_t max, Bool_t interp=kTRUE,
Bool_t showdef=kTRUE, Bool_t fixcolrng=kFALSE);
virtual ~TEveRGBAPalette();
void SetupColorArray() const;
void ClearColorArray();
Bool_t WithinVisibleRange(Int_t val) const;
const UChar_t* ColorFromValue(Int_t val) const;
void ColorFromValue(Int_t val, UChar_t* pix, Bool_t alpha=kTRUE) const;
Bool_t ColorFromValue(Int_t val, Int_t defVal, UChar_t* pix, Bool_t alpha=kTRUE) const;
Int_t GetMinVal() const { return fMinVal; }
Int_t GetMaxVal() const { return fMaxVal; }
void SetLimits(Int_t low, Int_t high);
void SetLimitsScaleMinMax(Int_t low, Int_t high);
void SetMinMax(Int_t min, Int_t max);
void SetMin(Int_t min);
void SetMax(Int_t max);
Int_t GetLowLimit() const { return fLowLimit; }
Int_t GetHighLimit() const { return fHighLimit; }
// ================================================================
Bool_t GetUIDoubleRep() const { return fUIDoubleRep; }
void SetUIDoubleRep(Bool_t b, Double_t f=1, Double_t c=0);
Bool_t GetInterpolate() const { return fInterpolate; }
void SetInterpolate(Bool_t b);
Bool_t GetShowDefValue() const { return fShowDefValue; }
void SetShowDefValue(Bool_t v) { fShowDefValue = v; }
Bool_t GetFixColorRange() const { return fFixColorRange; }
void SetFixColorRange(Bool_t v);
Int_t GetUnderflowAction() const { return fUnderflowAction; }
Int_t GetOverflowAction() const { return fOverflowAction; }
void SetUnderflowAction(Int_t a) { fUnderflowAction = a; }
void SetOverflowAction(Int_t a) { fOverflowAction = a; }
// ================================================================
Color_t GetDefaultColor() const { return fDefaultColor; }
Color_t* PtrDefaultColor() { return &fDefaultColor; }
UChar_t* GetDefaultRGBA() { return fDefaultRGBA; }
const UChar_t* GetDefaultRGBA() const { return fDefaultRGBA; }
void SetDefaultColor(Color_t ci);
void SetDefaultColorPixel(Pixel_t pix);
void SetDefaultColorRGBA(UChar_t r, UChar_t g, UChar_t b, UChar_t a=255);
// ----------------------------------------------------------------
Color_t GetUnderColor() const { return fUnderColor; }
Color_t* PtrUnderColor() { return &fUnderColor; }
UChar_t* GetUnderRGBA() { return fUnderRGBA; }
const UChar_t* GetUnderRGBA() const { return fUnderRGBA; }
void SetUnderColor(Color_t ci);
void SetUnderColorPixel(Pixel_t pix);
void SetUnderColorRGBA(UChar_t r, UChar_t g, UChar_t b, UChar_t a=255);
// ----------------------------------------------------------------
Color_t GetOverColor() const { return fOverColor; }
Color_t* PtrOverColor() { return &fOverColor; }
UChar_t* GetOverRGBA() { return fOverRGBA; }
const UChar_t* GetOverRGBA() const { return fOverRGBA; }
void SetOverColor(Color_t ci);
void SetOverColorPixel(Pixel_t pix);
void SetOverColorRGBA(UChar_t r, UChar_t g, UChar_t b, UChar_t a=255);
// ================================================================
void MinMaxValChanged(); // *SIGNAL*
ClassDef(TEveRGBAPalette, 1); // A generic, speed-optimised mapping from value to RGBA color supporting different wrapping and range truncation modes.
};
/******************************************************************************/
// Inlines for TEveRGBAPalette
/******************************************************************************/
//______________________________________________________________________________
inline Bool_t TEveRGBAPalette::WithinVisibleRange(Int_t val) const
{
if ((val < fMinVal && fUnderflowAction == kLA_Cut) ||
(val > fMaxVal && fOverflowAction == kLA_Cut))
return kFALSE;
else
return kTRUE;
}
//______________________________________________________________________________
inline const UChar_t* TEveRGBAPalette::ColorFromValue(Int_t val) const
{
// Here we expect that kLA_Cut has been checked; we further check
// for kLA_Wrap and kLA_Clip otherwise we proceed as for kLA_Mark.
if (!fColorArray) SetupColorArray();
if (val < fMinVal)
{
if (fUnderflowAction == kLA_Wrap)
val = (val+1-fCAMin)%fNBins + fCAMax;
else if (fUnderflowAction == kLA_Clip)
val = fMinVal;
else
return fUnderRGBA;
}
else if(val > fMaxVal)
{
if (fOverflowAction == kLA_Wrap)
val = (val-1-fCAMax)%fNBins + fCAMin;
else if (fOverflowAction == kLA_Clip)
val = fMaxVal;
else
return fOverRGBA;
}
return fColorArray + 4 * (val - fCAMin);
}
//______________________________________________________________________________
inline void TEveRGBAPalette::ColorFromValue(Int_t val, UChar_t* pix, Bool_t alpha) const
{
const UChar_t* c = ColorFromValue(val);
pix[0] = c[0]; pix[1] = c[1]; pix[2] = c[2];
if (alpha) pix[3] = c[3];
}
//______________________________________________________________________________
inline Bool_t TEveRGBAPalette::ColorFromValue(Int_t val, Int_t defVal, UChar_t* pix, Bool_t alpha) const
{
if (val == defVal) {
if (fShowDefValue) {
pix[0] = fDefaultRGBA[0];
pix[1] = fDefaultRGBA[1];
pix[2] = fDefaultRGBA[2];
if (alpha) pix[3] = fDefaultRGBA[3];
return kTRUE;
} else {
return kFALSE;
}
}
if (WithinVisibleRange(val)) {
ColorFromValue(val, pix, alpha);
return kTRUE;
} else {
return kFALSE;
}
}
#endif