include/root/TGLSurfacePainter.h

0001 // @(#)root/gl:$Id$
0002 // Author:  Timur Pocheptsov  31/08/2006
0003
0004 /*************************************************************************
0005  * Copyright (C) 1995-2006, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011
0012 #ifndef ROOT_TGLSurfacePainter
0013 #define ROOT_TGLSurfacePainter
0014
0015 #include <vector>
0016 #include <list>
0017 #include <utility>
0018
0019 #include "TGLPlotPainter.h"
0020 #include "TString.h"
0021 #include "TGLUtil.h"
0022
0023 class TRandom;
0024
0025 class TGLSurfacePainter : public TGLPlotPainter {
0026 private:
0027    enum ESurfaceType {
0028       kSurf,
0029       kSurf1,
0030       kSurf2,
0031       kSurf3,
0032       kSurf4,
0033       kSurf5
0034    };
0035
0036    mutable ESurfaceType fType;
0037
0038    TGL2DArray<TGLVertex3>                         fMesh;
0039    mutable TGL2DArray<Double_t>                   fTexMap;
0040    TGL2DArray<std::pair<TGLVector3, TGLVector3> > fFaceNormals;
0041    TGL2DArray<TGLVector3>                         fAverageNormals;
0042
0043    mutable TString                 fObjectInfo;
0044
0045    struct Projection_t {
0046       UChar_t fRGBA[4];
0047       std::vector<TGLVertex3> fVertices;
0048       void Swap(Projection_t &rhs);
0049    };
0050
0051    mutable Projection_t            fProj;
0052
0053    mutable std::list<Projection_t> fXOZProj;
0054    mutable std::list<Projection_t> fYOZProj;
0055    mutable std::list<Projection_t> fXOYProj;
0056
0057    mutable TGLLevelPalette         fPalette;
0058    mutable std::vector<Double_t>   fColorLevels;
0059    Rgl::Range_t                    fMinMaxVal;
0060
0061    Bool_t                          fSectionPass;
0062    mutable Bool_t                  fUpdateTexMap;
0063
0064 public:
0065    TGLSurfacePainter(TH1 *hist, TGLPlotCamera *camera, TGLPlotCoordinates *coord);
0066
0067    //TGLPlotPainter's final-overriders.
0068    char  *GetPlotInfo(Int_t px, Int_t py) override;
0069    Bool_t InitGeometry() override;
0070    void   StartPan(Int_t px, Int_t py) override;
0071    void   Pan(Int_t px, Int_t py) override;
0072    void   AddOption(const TString &stringOption) override;
0073    void   ProcessEvent(Int_t event, Int_t px, Int_t py) override;
0074
0075 private:
0076    void   InitGL()const override;
0077    void   DeInitGL()const override;
0078
0079    void   DrawPlot()const override;
0080
0081    void   SetNormals();
0082    void   SetSurfaceColor()const;
0083
0084    Bool_t InitGeometryCartesian();
0085    Bool_t InitGeometryPolar();
0086    Bool_t InitGeometryCylindrical();
0087    Bool_t InitGeometrySpherical();
0088
0089    void   DrawProjections()const;
0090    void   DrawSectionXOZ()const override;
0091    void   DrawSectionYOZ()const override;
0092    void   DrawSectionXOY()const override;
0093
0094    void   ClampZ(Double_t &zVal)const;
0095
0096    char  *WindowPointTo3DPoint(Int_t px, Int_t py)const;
0097
0098    Bool_t PreparePalette()const;
0099    void   GenTexMap()const;
0100    void   DrawContoursProjection()const;
0101
0102    Bool_t Textured()const;
0103    Bool_t HasSections()const;
0104    Bool_t HasProjections()const;
0105
0106    void   DrawPalette()const;
0107    void   DrawPaletteAxis()const override;
0108
0109    static TRandom *fgRandom;
0110
0111    ClassDefOverride(TGLSurfacePainter, 0)//Surface painter.
0112 };
0113
0114 #endif