Gabriele Cosmo
143 lines
3.1 KiB
C++
143 lines
3.1 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4ThreeMat.cc,v 1.5 2000/11/08 14:22:11 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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// ----------------------------------------------------------------------
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// GEANT 4 class source file
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//
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// G4ThreeMat.cc
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//
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// ----------------------------------------------------------------------
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#include "G4ThreeMat.hh"
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G4ThreeMat::G4ThreeMat()
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{
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// default (null) constructor
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for ( G4int i = 0; i < 3 ; i++ )
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{
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row[i] = G4Vector3D( 0., 0., 0. );
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column[i] = G4Vector3D( 0., 0., 0. );
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for ( G4int j = 0; j < 3 ; j++ )
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element[i][j] = 0.;
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}
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}
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G4ThreeMat::G4ThreeMat( G4double a[3][3] )
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{
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// constructor to make matrix from array
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for ( G4int i = 0; i < 3 ; i++ )
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{
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row[i] = G4Vector3D( a[i][0], a[i][1], a[i][2] );
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column[i] = G4Vector3D( a[0][i], a[1][i], a[2][i] );
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for ( G4int j = 0; j < 3 ; j++ )
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element[i][j] = a[i][j];
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}
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}
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G4ThreeMat::~G4ThreeMat()
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{
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}
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G4ThreeMat::G4ThreeMat( const G4ThreeMat& m )
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{
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// copy constructor
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for ( G4int i = 0; i < 3 ; i++ )
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{
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row[i] = m.row[i];
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column[i] = m.column[i];
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for ( G4int j = 0; j < 3 ; j++ )
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element[i][j] = m.element[i][j];
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}
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}
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const char* G4ThreeMat::NameOf() const
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{
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return "G4ThreeMat";
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}
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G4std::ostream& operator<<( G4std::ostream& os, const G4ThreeMat& m )
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{
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// overwrite output operator << to Print out G4ThreeMat objects
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// using the PrintOn function defined below
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m.PrintOn( os );
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return os;
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}
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void G4ThreeMat::PrintOn( G4std::ostream& os ) const
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{
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// printing function using C++ G4std::ostream class
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os << "[ " << element[0][0] << "\t"
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<< element[0][1] << "\t"
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<< element[0][2] << "\n "
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<< element[1][0] << "\t"
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<< element[1][1] << "\t"
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<< element[1][2] << "\n "
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<< element[2][0] << "\t"
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<< element[2][1] << "\t"
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<< element[2][2] << " ]\n";
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/*
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for ( G4int i = 0; i < 3; i++ ) {
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os << "row [" << i << "] " << row[i] << "\n"
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<< "column[" << i << "] " << column[i] << "\n";
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}
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*/
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}
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G4int G4ThreeMat::operator==( const G4ThreeMat& m ) const
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{
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for ( G4int i = 0; i < 3 ; i++ )
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{
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for ( G4int j = 0; j < 3 ; j++ )
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{
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if ( element[i][j] != m.element[i][j] )
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return 0;
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}
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}
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return 1;
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}
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G4ThreeMat& G4ThreeMat::operator=( const G4ThreeMat& m )
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{
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if (&m == this) return *this;
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for ( G4int i = 0; i < 3 ; i++ )
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{
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row[i] = m.row[i];
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column[i] = m.column[i];
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for ( G4int j = 0; j < 3 ; j++ )
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element[i][j] = m.element[i][j];
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}
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return *this;
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}
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G4double G4ThreeMat::Determinant() const
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{
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// Determinant of a three by three matrix
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return element[0][0] * ( element[1][1] * element[2][2]
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- element[2][1] * element[1][2] )
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- element[0][1] * ( element[1][0] * element[2][2]
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- element[2][0] * element[1][2] )
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+ element[0][2] * ( element[1][0] * element[2][1]
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- element[2][0] * element[1][1] );
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}
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