// @(#)root/gl:$Name:  $:$Id: TGLCylinder.h,v 1.2 2007/06/11 19:56:33 brun Exp $
// 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

#ifndef ROOT_TGLLogicalShape
#include "TGLLogicalShape.h"
#endif

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;

protected:
   void DirectDraw(TGLRnrCtx & rnrCtx) const;

public:
   TGLCylinder(const TBuffer3DTube & buffer);
   ~TGLCylinder();

   virtual Int_t  DLCacheSize()         const { return 14; }
   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); }
   virtual Short_t  QuantizeShapeLOD(Short_t shapeLOD, Short_t combiLOD) const;

private:
   ClassDef(TGLCylinder,0) // a cylinderical logical shape
};

#endif