math
Class TransformationMatrix4x4

java.lang.Object
  math.TransformationMatrix4x4

public class TransformationMatrix4x4
extends java.lang.Object

a transformation matrix, which also contains the inverse matrix

Constructor Summary

TransformationMatrix4x4()
constructor (fills with unit matrix)

TransformationMatrix4x4(Matrix4x4 m, Matrix4x4 im)
manually sets the matrix and its inverse

TransformationMatrix4x4(TransformationMatrix4x4 tm)

Method Summary

void	createRotationMatrix(double alpha, double beta, double gamma) creates a rotation matrix order: 1. z-rotation, 2. y-rotation, 3. x-rotation
void	createScaleMatrix(double sx, double sy, double sz) creates a scale matrix in all directions
void	createTranslationMatrix(Vector3D v) creates a translation matrix from a vector
void	createUnitMatrix() creates the unit matrix
void	createXRotationMatrix(double alpha) rotation around x-axis
void	createXScaleMatrix(double sx) creates a scale matrix in x-direction
void	createYRotationMatrix(double beta) rotation around y-axis
void	createYScaleMatrix(double sy) creates a scale matrix in y-direction
void	createZRotationMatrix(double gamma) rotation around z-axis
void	createZScaleMatrix(double sz) creates a scale matrix in z-direction
Matrix4x4	getInverseMatrix()
Matrix4x4	getMatrix()
void	transform(TransformationMatrix4x4 mat) creates a scale matrix in all directions

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformationMatrix4x4

public TransformationMatrix4x4()

constructor (fills with unit matrix)

TransformationMatrix4x4

public TransformationMatrix4x4(Matrix4x4 m,
                               Matrix4x4 im)

manually sets the matrix and its inverse

Parameters:

m - [in] 4x4 matrix

im - [in] 4x4 inverse matrix

TransformationMatrix4x4

public TransformationMatrix4x4(TransformationMatrix4x4 tm)

Method Detail

getMatrix

public Matrix4x4 getMatrix()

Returns:

the transformation matrix

getInverseMatrix

public Matrix4x4 getInverseMatrix()

Returns:

the inverse transformation matrix

createUnitMatrix

public void createUnitMatrix()

creates the unit matrix

createXRotationMatrix

public void createXRotationMatrix(double alpha)

rotation around x-axis

Parameters:

alpha - [in] angle in radians

createYRotationMatrix

public void createYRotationMatrix(double beta)

rotation around y-axis

Parameters:

beta - [in] angle in radians

createZRotationMatrix

public void createZRotationMatrix(double gamma)

rotation around z-axis

Parameters:

gamma - [in] angle in radians

createRotationMatrix

public void createRotationMatrix(double alpha,
                                 double beta,
                                 double gamma)

creates a rotation matrix order: 1. z-rotation, 2. y-rotation, 3. x-rotation

Parameters:

alpha - [in] x-angle in radians

beta - [in] y-angle in radians

gamma - [in] z-angle in radians

createTranslationMatrix

public void createTranslationMatrix(Vector3D v)

creates a translation matrix from a vector

Parameters:

v - [in] translation vector

createXScaleMatrix

public void createXScaleMatrix(double sx)

creates a scale matrix in x-direction

Parameters:

sx - [in] scaling

createYScaleMatrix

public void createYScaleMatrix(double sy)

creates a scale matrix in y-direction

Parameters:

sy - [in] scaling

createZScaleMatrix

public void createZScaleMatrix(double sz)

creates a scale matrix in z-direction

Parameters:

sz - [in] scaling

createScaleMatrix

public void createScaleMatrix(double sx,
                              double sy,
                              double sz)

creates a scale matrix in all directions

Parameters:

sx - [in] x-scaling

sy - [in] y-scaling

sz - [in] z-scaling

transform

public void transform(TransformationMatrix4x4 mat)

creates a scale matrix in all directions

Parameters:

mat - 4x4 transformation matrix