TEveJetCone.h

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// @(#)root/eve:$Id$
// Author: Matevz Tadel, Jochen Thaeder 2009
 
/*************************************************************************
 * 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_TEveJetCone
#define ROOT_TEveJetCone
 
#include "TEveShape.h"
#include "TEveVector.h"
 
 
//------------------------------------------------------------------------------
// TEveJetCone
//------------------------------------------------------------------------------
 
class TEveJetCone : public TEveShape
{
   friend class TEveJetConeProjected;
   friend class TEveJetConeGL;
   friend class TEveJetConeProjectedGL;
 
private:
   TEveJetCone(const TEveJetCone&);            // Not implemented
   TEveJetCone& operator=(const TEveJetCone&); // Not implemented
 
protected:
   TEveVector      fApex;        // Apex of the cone.
   TEveVector      fAxis;        // Axis of the cone.
   TEveVector      fLimits;      // Border of Barrel/Cylinder to cut the cone.
   Float_t         fThetaC;      // Transition theta
   Float_t         fEta,  fPhi;
   Float_t         fDEta, fDPhi;
   Int_t           fNDiv;
 
   TEveVector CalcEtaPhiVec(Float_t eta, Float_t phi) const;
   TEveVector CalcBaseVec  (Float_t eta, Float_t phi) const;
   TEveVector CalcBaseVec  (Float_t alpha) const;
   Bool_t     IsInTransitionRegion() const;
 
public:
   TEveJetCone(const Text_t* n="TEveJetCone", const Text_t* t="");
   ~TEveJetCone() override {}
 
   void    ComputeBBox() override;
   TClass* ProjectedClass(const TEveProjection* p) const override;
 
   void  SetApex(const TEveVector& a)      { fApex = a; }
   void  SetCylinder(Float_t r, Float_t z) { fLimits.Set(0, r, z); fThetaC = fLimits.Theta(); }
   void  SetRadius  (Float_t r)            { fLimits.Set(r, 0, 0); fThetaC = 10; }
 
   Int_t GetNDiv() const  { return fNDiv; }
   void  SetNDiv(Int_t n) { fNDiv = TMath::Max(3, n); }
 
   Int_t AddCone(Float_t eta, Float_t phi, Float_t cone_r, Float_t length=0);
   Int_t AddEllipticCone(Float_t eta, Float_t phi, Float_t reta, Float_t rphi, Float_t length=0);
 
   ClassDefOverride(TEveJetCone, 0); // Short description.
};
 
 
//------------------------------------------------------------------------------
// TEveJetConeProjected
//------------------------------------------------------------------------------
 
class TEveJetConeProjected : public TEveShape,
                             public TEveProjected
{
   friend class TEveJetConeProjectedGL;
 
private:
   TEveJetConeProjected(const TEveJetConeProjected&);            // Not implemented
   TEveJetConeProjected& operator=(const TEveJetConeProjected&); // Not implemented
 
protected:
   void SetDepthLocal(Float_t d) override;
 
public:
   TEveJetConeProjected(const char* n="TEveJetConeProjected", const char* t="");
   ~TEveJetConeProjected() override;
 
   // For TAttBBox:
   void ComputeBBox() override;
 
   // Projected:
   void SetProjection(TEveProjectionManager* mng, TEveProjectable* model) override;
   void UpdateProjection() override;
 
   TEveElement* GetProjectedAsElement() override { return this; }
 
   ClassDefOverride(TEveJetConeProjected, 0); // Projection of TEveJetCone.
};
 
#endif