library: libRGL
#include "TArcBall.h"

TArcBall

class description - header file - source file - inheritance tree (.pdf)

class TArcBall

Inheritance Chart:

TArcBall

    private:

                TArcBall(const TArcBall&)
      TArcBall& operator=(const TArcBall&)
           void ResetMatrices()

    protected:

      void MapToSphere(const TPoint& NewPt, Double_t* NewVec) const

    public:

                      TArcBall(UInt_t NewWidth = 100, UInt_t NewHeight = 100)
              virtual ~TArcBall()
       static TClass* Class()
                 void Click(const TPoint& NewPt)
                 void Drag(const TPoint& NewPt)
      const Double_t* GetRotMatrix() const
      virtual TClass* IsA() const
                 void SetBounds(UInt_t NewWidth, UInt_t NewHeight)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)

Data Members

    private:

      Double_t fThisRot[9]     
      Double_t fLastRot[9]     
      Double_t fTransform[16]  
      Double_t fStVec[3]       Saved click vector
      Double_t fEnVec[3]       Saved drag vector
      Double_t fAdjustWidth    Mouse bounds width
      Double_t fAdjustHeight   Mouse bounds height

Class Description

______________________________________________________________________________

void MapToSphere(const TPoint &NewPt, Double_t *NewVec)

map to sphere

TArcBall(UInt_t Width, UInt_t Height)

 constructor

void Click(const TPoint &NewPt)

Mouse down

void Drag(const TPoint &NewPt)

Mouse drag, calculate rotation

void ResetMatrices()

Set rotation matrix as union

TArcBall(const TArcBall &)

Non-copyable

virtual ~TArcBall()

void SetBounds(UInt_t NewWidth, UInt_t NewHeight)

Author: Timur Pocheptsov 03/08/2004
Last update: root/gl:$Name: $:$Id: TArcBall.cxx,v 1.11 2006/05/31 07:48:56 brun Exp $
Copyright (C) 1995-2004, Rene Brun and Fons Rademakers. *

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