game2dai.maths.Matrix2D Class Reference

Classes
class	Matrix

Public Member Functions
void	matrixMultiply (final Matrix mIn)
List< Vector2D >	transformVector2D (final List< Vector2D > vList)
Vector2D	transformVector2D (final Vector2D vPoint)
void	identity ()
void	translate (double x, double y)
void	scale (double xScale, double yScale)
void	rotate (final double rot)
void	rotate (final Vector2D fwd, final Vector2D side)
void	_11 (double val)
void	_12 (double val)
void	_13 (double val)
void	_21 (double val)
void	_22 (double val)
void	_23 (double val)
void	_31 (double val)
void	_32 (double val)
void	_33 (double val)

Private Attributes
Matrix	matrix

Detailed Description

Class to represent a 2D matrix that can be used to create transformed Vector2D objects.

Author

Peter Lager

Member Function Documentation

identity()

void game2dai.maths.Matrix2D.identity

(

)

Initialise the matrix to the identity matrix. This will erase the previous matrix element data.

matrixMultiply()

void game2dai.maths.Matrix2D.matrixMultiply

(

final Matrix

mIn

)

Multiply this matrix by another

Parameters

mIn	the multiplying matrix

rotate() [1/2]

void game2dai.maths.Matrix2D.rotate

(

final double

rot

)

Rotate the matrix.

Parameters

rot	angle in radians.

rotate() [2/2]

void game2dai.maths.Matrix2D.rotate	(	final Vector2D	fwd,
		final Vector2D	side
	)

Rotate the matrix based an entity's heading and side vectors

Parameters

fwd
side

scale()

void game2dai.maths.Matrix2D.scale	(	double	xScale,
		double	yScale
	)

Scale the matrix in the x and y directions.

Parameters

xScale	scale x by this
yScale	scale y by this

transformVector2D() [1/2]

List< Vector2D > game2dai.maths.Matrix2D.transformVector2D

(

final List< Vector2D >

vList

)

Create a new list of vectors from the provided list after being transformed by this matrix.

Parameters

vList

the original list of vectors

Returns

a list of transformed vectors.

transformVector2D() [2/2]

Vector2D game2dai.maths.Matrix2D.transformVector2D

(

final Vector2D

vPoint

)

Create a new vector from the provided vector after being transformed by the matrix.

Parameters

vPoint

the original vector

Returns

the transformed vector

translate()

void game2dai.maths.Matrix2D.translate	(	double	x,
		double	y
	)

Translate the matrix by the amount specified in x and y.

Parameters

x	x-translation value
y	y-translation value

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The documentation for this class was generated from the following file:

• /Users/peter/git/ai4games-repos/AI_4_2D_Games/src/game2dai/maths/Matrix2D.java