vooga.physicsEngine.geometry.mathUtils
Class Matrix2f

java.lang.Object
  vooga.physicsEngine.geometry.mathUtils.Matrix2f

public class Matrix2f
extends java.lang.Object

A utility class representing a 2 by 2 matrix. The main use is to create rotation matrices. Some of this code is copied from an open source implementation by Kevin Glass.

Author:

Peng Shi

Field Summary

Vector2f	col1 The first column of the matrix
Vector2f	col2 The second column of the matrix

Constructor Summary

Matrix2f()
Create an empty matrix

Matrix2f(double angle)
Create a matrix with a rotation

Matrix2f(Vector2f col1, Vector2f col2)
Create a matrix

Method Summary

Matrix2f	invert() Transpose the invert
Vector2f	multiply(Vector2f vec) Multiply this matrix with a given vector
Matrix2f	transpose() Transpose the matrix

Methods inherited from class java.lang.Object

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

Field Detail

col1

public Vector2f col1

The first column of the matrix

col2

public Vector2f col2

The second column of the matrix

Constructor Detail

Matrix2f

public Matrix2f()

Create an empty matrix

Matrix2f

public Matrix2f(double angle)

Create a matrix with a rotation

Parameters:

angle - The angle of the rotation decribed by the matrix

Matrix2f

public Matrix2f(Vector2f col1,
                Vector2f col2)

Create a matrix

Parameters:

col1 - The first column

col2 - The second column

Method Detail

multiply

public Vector2f multiply(Vector2f vec)

Multiply this matrix with a given vector

Parameters:

vec -

Returns:

transpose

public Matrix2f transpose()

Transpose the matrix

Returns:

A newly created matrix containing the transpose of this matrix

invert

public Matrix2f invert()

Transpose the invert

Returns:

A newly created matrix containing the invert of this matrix