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="");
   ~TEveEllipsoid() override {}

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

   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; }

   ClassDefOverride(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:
   void SetDepthLocal(Float_t d) override;

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

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

   TEveElement* GetProjectedAsElement() override { return this; }

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

#endif