/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Fireworks/Vertices/interface/TEveEllipsoid.h

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#ifndef ROOT_TEveEllipsoid
#define ROOT_TEveEllipsoid

#include "TEveShape.h"
#include "TEveVector.h"
#include "TEveTrans.h"
#include "TMatrixDSym.h"


//------------------------------------------------------------------------------
// TEveEllipsoid
//------------------------------------------------------------------------------

class TEveEllipsoid : public TEveShape
{
   friend class TEveEllipsoidProjected;
   friend class TEveEllipsoidGL;
   friend class TEveEllipsoidProjectedGL;

private:
   TEveEllipsoid(const TEveEllipsoid&);            // Not implemented
   TEveEllipsoid& operator=(const TEveEllipsoid&); // Not implemented

protected:
   TEveVector fPos;
   TEveVector fExtent3D;
   TEveTrans  fEMtx;

   float fEScale;

public:
   TEveEllipsoid(const Text_t* n="TEveEllipsoid", const Text_t* t="");
   virtual ~TEveEllipsoid() {}

   virtual void    ComputeBBox();
   virtual TClass* ProjectedClass(const TEveProjection* p) const;

   TEveVector& RefPos() { return fPos ;}
   TEveVector& RefExtent3D() { return fExtent3D ;} // cached member for bbox and 3D rendering
   TEveTrans&  RefEMtx()  { return fEMtx ;}

   void SetScale(float x) {fEScale = x; }

   ClassDef(TEveEllipsoid, 0); // Short description.
};


//------------------------------------------------------------------------------
// TEveEllipsoidProjected
//------------------------------------------------------------------------------

class TEveEllipsoidProjected : public TEveShape,
                               public TEveProjected
{
   friend class TEveEllipsoidProjectedGL;
private:
   TEveEllipsoidProjected(const TEveEllipsoidProjected&);            // Not implemented
   TEveEllipsoidProjected& operator=(const TEveEllipsoidProjected&); // Not implemented
   
protected:
   virtual void SetDepthLocal(Float_t d);

public:
   TEveEllipsoidProjected(const char* n="TEveEllipsoidProjected", const char* t="");
   virtual ~TEveEllipsoidProjected();

   // For TAttBBox:
   virtual void ComputeBBox();
   
   // Projected:
   virtual void SetProjection(TEveProjectionManager* mng, TEveProjectable* model);
   virtual void UpdateProjection();

   virtual TEveElement* GetProjectedAsElement() { return this; }

   ClassDef(TEveEllipsoidProjected, 0); // Projection of TEveEllipsoid.
};

#endif