org.freehep.graphics3d
Class Matrix4

java.lang.Object
  org.freehep.graphics3d.Matrix4

public class Matrix4

extends Object

Implementation of a 4x4 matrix.

Version:

$Id: Matrix4.java,v 1.3 2003/03/20 00:20:23 duns Exp $

Author:

Mark Donszelmann

Source Code:

Matrix4.java

Field Summary

double	m00
double	m01
double	m02
double	m03
double	m10
double	m11
double	m12
double	m13
double	m20
double	m21
double	m22
double	m23
double	m30
double	m31
double	m32
double	m33

Constructor Summary

Matrix4()
creates a new zero-ed matrix

Matrix4(double[] a)
creates a new matrix from an 16 value array, col by col

Matrix4(double a00, double a01, double a02, double a03, double a10, double a11, double a12, double a13, double a20, double a21, double a22, double a23, double a30, double a31, double a32, double a33)
creates a new matrix from values

Matrix4(Matrix4 s)
creates a new matrix with initial values from s

Method Summary

Matrix4	createInverse(Matrix4 m) inverts matrix and returns result in m
double	determinant()
boolean	equals(Object object)
int	hashCode()
static Matrix4	identity()
void	multiply(double s) multiplies matrix by s
void	multiply(Matrix4 p) multiplies matrix by p: using C = C x P
void	negate() negates matrix and returns result in m
void	normalize(double d) normalizes matrix by d
void	preMultiply(Matrix4 p) pre-multiplies matrix by p: using C = P x C
void	set(double a00, double a01, double a02, double a03, double a10, double a11, double a12, double a13, double a20, double a21, double a22, double a23, double a30, double a31, double a32, double a33) sets all values in this matrix
void	set(Matrix4 m) sets all values in this matrix to the ones in m
double[][]	toArray(double[][] d) converts matrix into d, a 4x4 array
String	toString()
void	transpose() transposes matrix

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

m00

public double m00

m01

public double m01

m02

public double m02

m03

public double m03

m10

public double m10

m11

public double m11

m12

public double m12

m13

public double m13

m20

public double m20

m21

public double m21

m22

public double m22

m23

public double m23

m30

public double m30

m31

public double m31

m32

public double m32

m33

public double m33

Constructor Detail

Matrix4

public Matrix4()

creates a new zero-ed matrix

Matrix4

public Matrix4(Matrix4 s)

creates a new matrix with initial values from s

Matrix4

public Matrix4(double[] a)

creates a new matrix from an 16 value array, col by col

Matrix4

public Matrix4(double a00,
               double a01,
               double a02,
               double a03,
               double a10,
               double a11,
               double a12,
               double a13,
               double a20,
               double a21,
               double a22,
               double a23,
               double a30,
               double a31,
               double a32,
               double a33)

creates a new matrix from values

Method Detail

set

public void set(double a00,
                double a01,
                double a02,
                double a03,
                double a10,
                double a11,
                double a12,
                double a13,
                double a20,
                double a21,
                double a22,
                double a23,
                double a30,
                double a31,
                double a32,
                double a33)

sets all values in this matrix

set

public void set(Matrix4 m)

sets all values in this matrix to the ones in m

identity

public static Matrix4 identity()

Returns:

an identity matrix

multiply

public void multiply(double s)

multiplies matrix by s

multiply

public void multiply(Matrix4 p)

multiplies matrix by p: using C = C x P

preMultiply

public void preMultiply(Matrix4 p)

pre-multiplies matrix by p: using C = P x C

normalize

public void normalize(double d)

normalizes matrix by d

determinant

public double determinant()

Returns:

the determinant of the matrix

createInverse

public Matrix4 createInverse(Matrix4 m)
                      throws NoninvertibleTransformException

inverts matrix and returns result in m

Returns:

an inverted matrix

Throws:

NoninvertibleTransformException

transpose

public void transpose()

transposes matrix

negate

public void negate()

negates matrix and returns result in m

Returns:

a negate of the matrix

toArray

public double[][] toArray(double[][] d)

converts matrix into d, a 4x4 array

Returns:

matrix in a two dimensional array

equals

public boolean equals(Object object)

Returns:

true if matrix is equal to object

hashCode

public int hashCode()

Returns:

hashcode for this matrix

toString

public String toString()

Returns:

string representation of this matrix