/usr/include/root/TGLParametric.h is in libroot-graf3d-gl-dev 5.34.19+dfsg-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Author: Timur Pocheptsov 26/01/2007
/*************************************************************************
* Copyright (C) 1995-2000, 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_TGLParametric
#define ROOT_TGLParametric
#include <memory>
#ifndef ROOT_TGLHistPainter
#include "TGLHistPainter.h"
#endif
#ifndef ROOT_TGLUtil
#include "TGLUtil.h"
#endif
#ifndef ROOT_TAxis
#include "TAxis.h"
#endif
#ifndef ROOT_TF2
#include "TF2.h"
#endif
class TString;
//////////////////////////////////////////////////////////////////////////
// //
// TGLParametricEquation //
// //
// Parametric equations drawing with GL. //
// //
//////////////////////////////////////////////////////////////////////////
typedef void (*ParametricEquation_t)(TGLVertex3 &, Double_t u, Double_t v);
class TGLParametricEquation : public TNamed {
private:
typedef std::auto_ptr<TF2> Ptr_t;
Ptr_t fXEquation;
Ptr_t fYEquation;
Ptr_t fZEquation;
ParametricEquation_t fEquation;
Rgl::Range_t fURange;
Rgl::Range_t fVRange;
Bool_t fConstrained;
Bool_t fModified;
typedef std::auto_ptr<TGLHistPainter> Painter_t;
//C++ compiler do not need TGLhistPainter definition here, but I'm not sure about CINT,
//so I've included TGLHistPainter definition.
Painter_t fPainter;
public:
TGLParametricEquation(const TString &name, const TString &xEquation,
const TString &yEquation, const TString &zEquation,
Double_t uMin, Double_t uMax,
Double_t vMin, Double_t vMax);
TGLParametricEquation(const TString &name, ParametricEquation_t equation,
Double_t uMin, Double_t uMax, Double_t vMin, Double_t vMax);
Rgl::Range_t GetURange()const;
Rgl::Range_t GetVRange()const;
Bool_t IsConstrained()const;
void SetConstrained(Bool_t c);
Bool_t IsModified()const;
void SetModified(Bool_t m);
void EvalVertex(TGLVertex3 &newVertex, Double_t u, Double_t v)const;
Int_t DistancetoPrimitive(Int_t px, Int_t py);
void ExecuteEvent(Int_t event, Int_t px, Int_t py);
char *GetObjectInfo(Int_t px, Int_t py) const;
void Paint(Option_t *option);
private:
TGLParametricEquation(const TGLParametricEquation &);
TGLParametricEquation &operator = (const TGLParametricEquation &);
ClassDef(TGLParametricEquation, 0)//Equation of parametric surface.
};
class TGLParametricPlot : public TGLPlotPainter {
private:
struct Vertex_t {
TGLVertex3 fPos;
TGLVector3 fNormal;
Float_t fRGBA[4];
};
enum EMeshSize {kLow = 30, kHigh = 150};
Int_t fMeshSize;
TGL2DArray<Vertex_t> fMesh;
Bool_t fShowMesh;
Int_t fColorScheme;
TGLParametricEquation *fEquation;
TAxis fCartesianXAxis;
TAxis fCartesianYAxis;
TAxis fCartesianZAxis;
TGLPlotCoordinates fCartesianCoord;
public:
TGLParametricPlot(TGLParametricEquation *equation, TGLPlotCamera *camera);
Bool_t InitGeometry();
void StartPan(Int_t px, Int_t py);
void Pan(Int_t px, Int_t py);
char *GetPlotInfo(Int_t px, Int_t py);
void AddOption(const TString &option);
void ProcessEvent(Int_t event, Int_t px, Int_t py);
private:
void InitGL()const;
void DeInitGL()const;
void DrawPlot()const;
void InitColors();
void DrawSectionXOZ()const;
void DrawSectionYOZ()const;
void DrawSectionXOY()const;
void SetSurfaceColor()const;
TGLParametricPlot(const TGLParametricPlot &);
TGLParametricPlot &operator = (const TGLParametricPlot &);
ClassDef(TGLParametricPlot, 0)//Parametric plot's painter.
};
#endif
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