hephysics.vec

Class Hep3Matrix

java.lang.Object

hephysics.matrix.BasicMatrix

hephysics.vec.Hep3Matrix

All Implemented Interfaces:

Matrix, MutableMatrix, Serializable

public class Hep3Matrix
extends BasicMatrix

Hep 3x3 matrices

See Also:

VecOp, Serialized Form

Constructor Summary

Constructors

Constructor and Description
Hep3Matrix()
Hep3Matrix(double[][] data) Creates a new instance of BasicMatrix
Hep3Matrix(double e11, double e12, double e13, double e21, double e22, double e23, double e31, double e32, double e33)
Hep3Matrix(int nRows, int nCols)
Hep3Matrix(Matrix m)

Method Summary

Modifier and Type	Method and Description
double	det() Returns the determinent of the matrix.
double	e(int row, int column) Returns the (row, column) element
int	getNColumns() Returns the number of columns
int	getNRows() Returns the number of rows
static Hep3Matrix	identity()
void	invert() Invert this matrix (into itself)
static Hep3Matrix	mult(Hep3Matrix m1, Hep3Matrix m2)
void	setActiveEuler(double phi, double theta, double psi) Defines a rotation matrix via Euler angles.
void	setElement(int row, int column, double value) Sets the (row, column) element
void	setPassiveEuler(double phi, double theta, double psi) Defines a rotation matrix via Euler angles.
String	toString()
double	trace() Returns the trace of the matrix.
void	transpose() Tranpose this matrix (into itself)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Hep3Matrix

public Hep3Matrix(int nRows,
                  int nCols)

Hep3Matrix

public Hep3Matrix(double[][] data)

Creates a new instance of BasicMatrix

Hep3Matrix

public Hep3Matrix()

Hep3Matrix

public Hep3Matrix(double e11,
                  double e12,
                  double e13,
                  double e21,
                  double e22,
                  double e23,
                  double e31,
                  double e32,
                  double e33)

Hep3Matrix

public Hep3Matrix(Matrix m)
           throws MatrixOp.InvalidMatrixException

Throws:

MatrixOp.InvalidMatrixException

Method Detail

e

public double e(int row,
                int column)

Returns the (row, column) element

Specified by:

e in interface Matrix

Overrides:

e in class BasicMatrix

det

public double det()

Returns the determinent of the matrix.

Overrides:

det in class BasicMatrix

trace

public double trace()

Returns the trace of the matrix.

setElement

public void setElement(int row,
                       int column,
                       double value)

Sets the (row, column) element

Specified by:

setElement in interface MutableMatrix

Overrides:

setElement in class BasicMatrix

setPassiveEuler

public void setPassiveEuler(double phi,
                            double theta,
                            double psi)

Defines a rotation matrix via Euler angles. A "passive" rotation matrix rotates the coordinate system, an "active" one rotates the vector(body). The angles are defined for a right handed coordinate system. They are defined by counterclockwise rotations about an axis by the right hand rule, ie, looking down the axis in the negative direction the transvers axes are seen to rotate counterclockwise. To define passive(active) angles first rotate the coordinates(body) about the z-axis by phi, then about the new x-axis by theta then about the new z-axis by psi. Angles in radians.

setActiveEuler

public void setActiveEuler(double phi,
                           double theta,
                           double psi)

Defines a rotation matrix via Euler angles. A "passive" rotation matrix rotates the coordinate system, an "active" one rotates the vector(body). The angles are defined for a right handed coordinate system. They are defined by counterclockwise rotations about an axis by the right hand rule, ie, looking down the axis in the negative direction the transvers axes are seen to rotate counterclockwise. To define passive(active) angles first rotate the coordinates(body) about the z-axis by phi, then about the new x-axis by theta then about the new z-axis by psi. Angles in radians.

identity

public static Hep3Matrix identity()

toString

public String toString()

Overrides:

toString in class BasicMatrix

getNRows

public int getNRows()

Description copied from interface: Matrix

Returns the number of rows

Specified by:

getNRows in interface Matrix

Overrides:

getNRows in class BasicMatrix

getNColumns

public int getNColumns()

Description copied from interface: Matrix

Returns the number of columns

Specified by:

getNColumns in interface Matrix

Overrides:

getNColumns in class BasicMatrix

invert

public void invert()
            throws MatrixOp.IndeterminateMatrixException

Description copied from interface: MutableMatrix

Invert this matrix (into itself)

Specified by:

invert in interface MutableMatrix

Overrides:

invert in class BasicMatrix

Throws:

MatrixOp.IndeterminateMatrixException

See Also:

MatrixOp.inverse(Matrix,MutableMatrix)

transpose

public void transpose()

Description copied from interface: MutableMatrix

Tranpose this matrix (into itself)

Specified by:

transpose in interface MutableMatrix

Overrides:

transpose in class BasicMatrix

See Also:

MatrixOp.transposed(Matrix,MutableMatrix)

mult

public static Hep3Matrix mult(Hep3Matrix m1,
                              Hep3Matrix m2)