library: libGraf3d
#include "TRotMatrix.h"

TRotMatrix

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

class TRotMatrix : public TNamed

Inheritance Chart:

TObject

TNamed

TRotMatrix

    private:

      virtual void SetReflection()

    public:

                              TRotMatrix()
                              TRotMatrix(const char* name, const char* title, Double_t* matrix)
                              TRotMatrix(const char* name, const char* title, Double_t theta, Double_t phi, Double_t psi)
                              TRotMatrix(const char* name, const char* title, Double_t theta1, Double_t phi1, Double_t theta2, Double_t phi2, Double_t theta3, Double_t phi3)
                              TRotMatrix(const TRotMatrix&)
                      virtual ~TRotMatrix()
               static TClass* Class()
             virtual Double_t Determinant() const
            virtual Double_t* GetGLMatrix(Double_t* rGLMatrix) const
            virtual Double_t* GetMatrix()
                virtual Int_t GetNumber() const
             virtual Double_t GetPhi() const
             virtual Double_t GetPsi() const
             virtual Double_t GetTheta() const
                virtual Int_t GetType() const
              virtual TClass* IsA() const
               virtual Bool_t IsReflection() const
                  TRotMatrix& operator=(const TRotMatrix&)
      virtual const Double_t* SetAngles(Double_t theta1, Double_t phi1, Double_t theta2, Double_t phi2, Double_t theta3, Double_t phi3)
                 virtual void SetMatrix(const Double_t* matrix)
                 virtual void SetName(const char* name)
                 virtual void ShowMembers(TMemberInspector& insp, char* parent)
                 virtual void Streamer(TBuffer& b)
                         void StreamerNVirtual(TBuffer& b)

Data Members


    protected:

         Int_t fNumber     Rotation matrix number
         Int_t fType       Type of matrix (0=identity, 1=reflexion, 2=otherwise)
      Double_t fTheta      theta angle
      Double_t fPhi        phi angle
      Double_t fPsi        psi angle
      Double_t fMatrix[9]  Rotation matrix

    public:

      static const enum TRotMatrix:: kReflection

Class Description

______________________________________________________________________________

 Manages a detector rotation matrix. See class TGeometry.

TRotMatrix()

 RotMatrix default constructor.

TRotMatrix(const char *name, const char *title, Double_t *matrix)

 RotMatrix normal constructor.

TRotMatrix(const char *name, const char *title, Double_t theta, Double_t phi, Double_t psi)

 RotMatrix normal constructor.

TRotMatrix(const char *name, const char *title, Double_t theta1, Double_t phi1 , Double_t theta2, Double_t phi2 , Double_t theta3, Double_t phi3)

 RotMatrix normal constructor defined a la GEANT.

 The TRotMatrix constructor with six angles uses the GEANT convention:

 theta1 is the polar angle of the x-prim axis in the main reference system
 (MRS), theta2 and theta3 have the same meaning for the y-prim and z-prim
 axis.

 Phi1 is the azimuthal angle of the x-prim in the MRS and phi2 and phi3
 have the same meaning for y-prim and z-prim.


 for example, the unit matrix is defined in the following way.

     x-prim || x, y-prim || y, z-prim || z

     means:  theta1=90, theta2=90, theta3=0, phi1=0, phi2=90, phi3=0

~TRotMatrix()

 RotMatrix default destructor.

Double_t Determinant()

 Determinant() returns the value of the determiant of this matrix

Double_t* GetGLMatrix(Double_t *rGLMatrix)

  Convert this matrix to the OpenGL [4x4]

  [  fMatrix[0]   fMatrix[1]   fMatrix[2]    0  ]
  [  fMatrix[3]   fMatrix[4]   fMatrix[5]    0  ]
  [  fMatrix[6]   fMatrix[7]   fMatrix[8]    0  ]
  [     0             0           0          1  ]

  Input:
  -----
  Double_t *rGLMatrix - pointer to Double_t 4x4 buffer array

  Return:
  ------
  Double_t pointer to the input buffer

const Double_t* SetAngles(Double_t theta1, Double_t phi1, Double_t theta2, Double_t phi2,Double_t theta3, Double_t phi3)

 theta1 is the polar angle of the x-prim axis in the main reference system
 (MRS), theta2 and theta3 have the same meaning for the y-prim and z-prim
 axis.

 Phi1 is the azimuthal angle of the x-prim in the MRS and phi2 and phi3
 have the same meaning for y-prim and z-prim.


 for example, the unit matrix is defined in the following way.

     x-prim || x, y-prim || y, z-prim || z

     means:  theta1=90, theta2=90, theta3=0, phi1=0, phi2=90, phi3=0

void SetMatrix(const Double_t *matrix)

 copy predefined 3x3 matrix into TRotMatrix object

void SetReflection()

 SetReflection() -  checks whether the determinant of this
                    matrix defines the reflection transformation
                    and set the "reflection" flag if any

void Streamer(TBuffer &R__b)

 Stream an object of class TRotMatrix.

TRotMatrix()

Double_t* GetMatrix()

Int_t GetNumber()

Int_t GetType()

Double_t GetTheta()

Double_t GetPhi()

Double_t GetPsi()

Bool_t IsReflection()

void SetName(const char *name)

Author: Rene Brun 14/09/95
Last update: root/g3d:$Name: $:$Id: TRotMatrix.cxx,v 1.4 2005/11/24 17:28:07 couet Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *

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