org.gephi.lib.gleem.linalg

Class Matf

java.lang.Object

org.gephi.lib.gleem.linalg.Matf

public class Matf
extends Object

Arbitrary-size single-precision matrix class. Currently very simple and only supports a few needed operations.

Field Summary

Fields

Modifier and Type	Field and Description
private float[]	data
private int	nCol
private int	nRow

Constructor Summary

Constructors

Constructor and Description
Matf(int nRow, int nCol)
Matf(Matf arg)

Method Summary

Modifier and Type	Method and Description
float	get(int i, int j) Gets the (i,j)th element of this matrix, where i is the row index and j is the column index
Matf	mul(Matf b) Returns this * b; creates new matrix
Vecf	mul(Vecf v) Returns this * v, assuming v is a column vector.
int	nCol()
int	nRow()
void	set(int i, int j, float val) Sets the (i,j)th element of this matrix, where i is the row index and j is the column index
Mat2f	toMat2f() If this is a 2x2 matrix, returns it as a Mat2f.
Mat3f	toMat3f() If this is a 3x3 matrix, returns it as a Mat3f.
Mat4f	toMat4f() If this is a 4x4 matrix, returns it as a Mat4f.
Matf	transpose() Returns transpose of this matrix; creates new matrix

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

data

private float[] data

nCol

private int nCol

nRow

private int nRow

Constructor Detail

Matf

public Matf(int nRow,
            int nCol)

Matf

public Matf(Matf arg)

Method Detail

nRow

public int nRow()

nCol

public int nCol()

get

public float get(int i,
                 int j)

Gets the (i,j)th element of this matrix, where i is the row index and j is the column index

set

public void set(int i,
                int j,
                float val)

Sets the (i,j)th element of this matrix, where i is the row index and j is the column index

transpose

public Matf transpose()

Returns transpose of this matrix; creates new matrix

mul

public Matf mul(Matf b)
         throws DimensionMismatchException

Returns this * b; creates new matrix

Throws:

DimensionMismatchException

mul

public Vecf mul(Vecf v)
         throws DimensionMismatchException

Returns this * v, assuming v is a column vector.

Throws:

DimensionMismatchException

toMat2f

public Mat2f toMat2f()
              throws DimensionMismatchException

If this is a 2x2 matrix, returns it as a Mat2f.

Throws:

DimensionMismatchException

toMat3f

public Mat3f toMat3f()
              throws DimensionMismatchException

If this is a 3x3 matrix, returns it as a Mat3f.

Throws:

DimensionMismatchException

toMat4f

public Mat4f toMat4f()
              throws DimensionMismatchException

If this is a 4x4 matrix, returns it as a Mat4f.

Throws:

DimensionMismatchException