Class Matrix

java.lang.Object

javaforce.gl.Matrix

All Implemented Interfaces:

Cloneable

public class Matrix
extends Object
implements Cloneable

4x4 matrix

Field Summary

Fields

Modifier and Type	Field	Description
float[]	m
static final int	SX
static final int	SY
static final int	SZ
static final int	TX
static final int	TY
static final int	TZ

Constructor Summary

Constructors

Constructor	Description
Matrix()

Method Summary

Modifier and Type	Method	Description
void	addRotate(float angle, float ax, float ay, float az)	Adds rotation assuming there is currently no translation.
void	addRotate2(float angle, float ax, float ay, float az)	Adds rotation with current translation.
void	addRotate3(float angle, float ax, float ay, float az)	Adds rotation adjusted to current rotation but assuming there is currently no translation.
void	addRotate4(float angle, float ax, float ay, float az)	Adds rotation adjusted to current rotation with current translation.
void	addScale(float sx, float sy, float sz)	Adds scale using full matrix multiple.
void	addTranslate(float tx, float ty, float tz)	Adds translation assuming there is currently no rotation.
void	addTranslate(Matrix src)	Adds translation assuming there is currently no rotation.
void	addTranslate2(float tx, float ty, float tz)	Adds translation with current rotation.
void	addTranslate3(float tx, float ty, float tz)	Adds translation adjusted for scaling assuming there is currently no rotation.
void	addTranslate4(float tx, float ty, float tz)	Adds translation adjusted for scaling with current rotation.
Object	clone()
float	determinant()	Return the determinant.
void	frustum(float left, float right, float bottom, float top, float znear, float zfar)
float	get(int i, int j)
boolean	invert()	Full matrix inversion in place.
void	lookAt(Vector3 eye, Vector3 at, Vector3 up)	Sets the matrix to look at a point from a specified point.
void	mult(Matrix src)	3x3 matrix multiple (rotation only)
void	mult(Vector3 dest)	Multiply another 3x1 matrix with this one (3x3 part only) Effectively rotates the Vector3 by the rotation of this matrix
void	mult(Vector4 dest)	Multiply another 4x1 matrix with this one (full matrix)
void	mult3x3(Matrix src)	Multiply this matrix with another (rotation/scale only)
void	mult4x4(Matrix src)	Multiply this matrix with another
void	ortho(float left, float right, float bottom, float top, float near, float far)
void	perspective(float fovyInDegrees, float aspectRatio, float znear, float zfar)
void	reverseTranslate()
void	set(int i, int j, float v)
void	set(Matrix src)
void	set(Quaternion q)	Set rotation from Quaternion.
void	setAA(float angle, float x, float y, float z)
void	setAATranslate(float angle, float x, float y, float z, float tx, float ty, float tz)
void	setIdentity()
void	setIdentity3x3()
void	setScale(float x, float y, float z)
void	setTranslate(float x, float y, float z)
String	toString()
void	transpose()	Transpose this matrix in place.

Methods inherited from class java.lang.Object

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

Field Details

m

public float[] m

TX

public static final int TX

See Also:

• Constant Field Values

TY

public static final int TY

See Also:

• Constant Field Values

TZ

public static final int TZ

See Also:

• Constant Field Values

SX

public static final int SX

See Also:

• Constant Field Values

SY

public static final int SY

See Also:

• Constant Field Values

SZ

public static final int SZ

See Also:

• Constant Field Values

Constructor Details

Matrix

public Matrix()

Method Details

clone

public Object clone()

Overrides:

clone in class Object

setIdentity

public void setIdentity()

setIdentity3x3

public void setIdentity3x3()

set

public void set(Matrix src)

setAA

public void setAA(float angle,
 float x,
 float y,
 float z)

set

public void set(Quaternion q)

Set rotation from Quaternion.

setAATranslate

public void setAATranslate(float angle,
 float x,
 float y,
 float z,
 float tx,
 float ty,
 float tz)

setTranslate

public void setTranslate(float x,
 float y,
 float z)

setScale

public void setScale(float x,
 float y,
 float z)

addRotate

public void addRotate(float angle,
 float ax,
 float ay,
 float az)

Adds rotation assuming there is currently no translation.

addRotate2

public void addRotate2(float angle,
 float ax,
 float ay,
 float az)

Adds rotation with current translation.

addRotate3

public void addRotate3(float angle,
 float ax,
 float ay,
 float az)

Adds rotation adjusted to current rotation but assuming there is currently no translation.

addRotate4

public void addRotate4(float angle,
 float ax,
 float ay,
 float az)

Adds rotation adjusted to current rotation with current translation.

addTranslate

public void addTranslate(float tx,
 float ty,
 float tz)

Adds translation assuming there is currently no rotation.

addTranslate

public void addTranslate(Matrix src)

Adds translation assuming there is currently no rotation.

addTranslate2

public void addTranslate2(float tx,
 float ty,
 float tz)

Adds translation with current rotation.

addTranslate3

public void addTranslate3(float tx,
 float ty,
 float tz)

Adds translation adjusted for scaling assuming there is currently no rotation. Warning : Any zero scaling will result in divide by zero.

addTranslate4

public void addTranslate4(float tx,
 float ty,
 float tz)

Adds translation adjusted for scaling with current rotation. Warning : Any zero scaling will result in divide by zero.

addScale

public void addScale(float sx,
 float sy,
 float sz)

Adds scale using full matrix multiple.

mult4x4

public void mult4x4(Matrix src)

Multiply this matrix with another

mult3x3

public void mult3x3(Matrix src)

Multiply this matrix with another (rotation/scale only)

mult

public void mult(Matrix src)

3x3 matrix multiple (rotation only)

mult

public void mult(Vector3 dest)

Multiply another 3x1 matrix with this one (3x3 part only) Effectively rotates the Vector3 by the rotation of this matrix

mult

public void mult(Vector4 dest)

Multiply another 4x1 matrix with this one (full matrix)

get

public float get(int i,
 int j)

set

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

transpose

public void transpose()

Transpose this matrix in place.

determinant

public float determinant()

Return the determinant. Computed across the zeroth row.

invert

public boolean invert()

Full matrix inversion in place. If matrix is singular, returns false and matrix contents are untouched. If you know the matrix is orthonormal, you can call transpose() instead.

reverseTranslate

public void reverseTranslate()

frustum

public void frustum(float left,
 float right,
 float bottom,
 float top,
 float znear,
 float zfar)

perspective

public void perspective(float fovyInDegrees,
 float aspectRatio,
 float znear,
 float zfar)

ortho

public void ortho(float left,
 float right,
 float bottom,
 float top,
 float near,
 float far)

lookAt

public void lookAt(Vector3 eye,
 Vector3 at,
 Vector3 up)

Sets the matrix to look at a point from a specified point. Note:input vectors are clobbered.

Parameters:

eye - = camera position

at - = point to look at

up - = camera up vector (usually 0,1,0)

toString

public String toString()

Overrides:

toString in class Object