TGLCylinder.h

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// @(#)root/gl:$Id$
// Author:  Timur Pocheptsov  03/08/2004
// NOTE: This code moved from obsoleted TGLSceneObject.h / .cxx - see these
// attic files for previous CVS history
 
/*************************************************************************
 * Copyright (C) 1995-2006, 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_TGLCylinder
#define ROOT_TGLCylinder
 
#include "TGLLogicalShape.h"
 
class TBuffer3DTube;
 
class TGLCylinder : public TGLLogicalShape
{
private:
   Double_t fR1, fR2, fR3, fR4;
   Double_t fDz;
   Double_t fPhi1, fPhi2;
 
   TGLVector3 fLowPlaneNorm, fHighPlaneNorm;
   Bool_t fSegMesh;
 
public:
   TGLCylinder(const TBuffer3DTube & buffer);
   ~TGLCylinder();
 
   virtual UInt_t DLOffset(Short_t lod) const;
 
   // Cylinders support LOD (tesselation quality) adjustment along
   // X/Y axes (round the cylinder radius), but not along length (Z)
   virtual ELODAxes SupportedLODAxes() const
   {
      // return ELODAxes(kLODAxesX | kLODAxesY);
      // MT 2020-06-05: There seems to be a problem with TGLPhysicalShape::CalculateShapeLOD()
      // and LOD is set to Pixel way too early. Resetting this to kLODAxesAll.
      return ELODAxes(kLODAxesAll);
   }
   virtual Short_t  QuantizeShapeLOD(Short_t shapeLOD, Short_t combiLOD) const;
   virtual void     DirectDraw(TGLRnrCtx & rnrCtx) const;
 
private:
   ClassDef(TGLCylinder,0); // a cylinderical logical shape
};
 
#endif