iText.Kernel.Geom.Matrix Class Reference

Keeps all the values of a 3 by 3 matrix and allows you to do some math with matrices. More...

Public Member Functions
	Matrix ()
	constructs a new Matrix with identity. More...
	Matrix (float tx, float ty)
	Constructs a matrix that represents translation. More...
	Matrix (float e11, float e12, float e13, float e21, float e22, float e23, float e31, float e32, float e33)
	Creates a Matrix with 9 specified entries. More...
	Matrix (float a, float b, float c, float d, float e, float f)
	Creates a Matrix with 6 specified entries. More...
virtual float	Get (int index)
	Gets a specific value inside the matrix. More...
virtual iText.Kernel.Geom.Matrix	Multiply (iText.Kernel.Geom.Matrix by)
	multiplies this matrix by 'b' and returns the result. More...
virtual iText.Kernel.Geom.Matrix	Add (iText.Kernel.Geom.Matrix arg)
	Adds a matrix from this matrix and returns the results. More...
virtual iText.Kernel.Geom.Matrix	Subtract (iText.Kernel.Geom.Matrix arg)
	Subtracts a matrix from this matrix and returns the results. More...
virtual float	GetDeterminant ()
	Computes the determinant of the matrix. More...
override bool	Equals (Object obj)
	Checks equality of matrices. More...
override int	GetHashCode ()
	Generates a hash code for this object. More...
override String	ToString ()
	Generates a String representation of the matrix. More...

Static Public Attributes
const int	I11 = 0
	the row=1, col=1 position ('a') in the matrix. More...
const int	I12 = 1
	the row=1, col=2 position ('b') in the matrix. More...
const int	I13 = 2
	the row=1, col=3 position (always 0 for 2-D) in the matrix. More...
const int	I21 = 3
	the row=2, col=1 position ('c') in the matrix. More...
const int	I22 = 4
	the row=2, col=2 position ('d') in the matrix. More...
const int	I23 = 5
	the row=2, col=3 position (always 0 for 2-D) in the matrix. More...
const int	I31 = 6
	the row=3, col=1 ('e', or X translation) position in the matrix. More...
const int	I32 = 7
	the row=3, col=2 ('f', or Y translation) position in the matrix. More...
const int	I33 = 8
	the row=3, col=3 position (always 1 for 2-D) in the matrix. More...

Detailed Description

Keeps all the values of a 3 by 3 matrix and allows you to do some math with matrices.

Constructor & Destructor Documentation

Matrix() [1/4]

iText.Kernel.Geom.Matrix.Matrix ( )

inline

constructs a new Matrix with identity.

Matrix() [2/4]

iText.Kernel.Geom.Matrix.Matrix ( float  tx, float  ty  )

inline

Constructs a matrix that represents translation.

Parameters

tx	x-axis translation
ty	y-axis translation

Matrix() [3/4]

iText.Kernel.Geom.Matrix.Matrix ( float  e11, float  e12, float  e13, float  e21, float  e22, float  e23, float  e31, float  e32, float  e33  )

inline

Creates a Matrix with 9 specified entries.

Parameters

e11	element at position (1,1)
e12	element at position (1,2)
e13	element at position (1,3)
e21	element at position (2,1)
e22	element at position (2,2)
e23	element at position (2,3)
e31	element at position (3,1)
e32	element at position (3,2)
e33	element at position (3,3)

Matrix() [4/4]

iText.Kernel.Geom.Matrix.Matrix ( float  a, float  b, float  c, float  d, float  e, float  f  )

inline

Creates a Matrix with 6 specified entries.

Creates a Matrix with 6 specified entries. The third column will always be [0 0 1] (row, column)

Parameters

a	element at (1,1)
b	element at (1,2)
c	element at (2,1)
d	element at (2,2)
e	element at (3,1)
f	element at (3,2)

Member Function Documentation

Add()

virtual iText.Kernel.Geom.Matrix iText.Kernel.Geom.Matrix.Add ( iText.Kernel.Geom.Matrix  arg )

inlinevirtual

Adds a matrix from this matrix and returns the results.

Parameters

arg	the matrix to subtract from this matrix

Returns

a Matrix object

Equals()

override bool iText.Kernel.Geom.Matrix.Equals ( Object  obj )

inline

Checks equality of matrices.

Parameters

obj	the other Matrix that needs to be compared with this matrix.

Returns

true if both matrices are equal

See also

System.Object.Equals(System.Object)

Get()

virtual float iText.Kernel.Geom.Matrix.Get ( int  index )

inlinevirtual

Gets a specific value inside the matrix.

Gets a specific value inside the matrix.

For reference, the indeces are as follows:
I11 I12 I13
I21 I22 I23
I31 I32 I33

Parameters

index

an array index corresponding with a value inside the matrix

Returns

the value at that specific position.

GetDeterminant()

virtual float iText.Kernel.Geom.Matrix.GetDeterminant ( )

inlinevirtual

Computes the determinant of the matrix.

Returns

the determinant of the matrix

GetHashCode()

override int iText.Kernel.Geom.Matrix.GetHashCode ( )

inline

Generates a hash code for this object.

Returns

the hash code of this object

See also

System.Object.GetHashCode()

Multiply()

virtual iText.Kernel.Geom.Matrix iText.Kernel.Geom.Matrix.Multiply ( iText.Kernel.Geom.Matrix  by )

inlinevirtual

multiplies this matrix by 'b' and returns the result.

multiplies this matrix by 'b' and returns the result. See http://en.wikipedia.org/wiki/Matrix_multiplication

Parameters

by	The matrix to multiply by

Returns

the resulting matrix

Subtract()

virtual iText.Kernel.Geom.Matrix iText.Kernel.Geom.Matrix.Subtract ( iText.Kernel.Geom.Matrix  arg )

inlinevirtual

Subtracts a matrix from this matrix and returns the results.

Parameters

arg	the matrix to subtract from this matrix

Returns

a Matrix object

ToString()

override String iText.Kernel.Geom.Matrix.ToString ( )

inline

Generates a String representation of the matrix.

Returns

the values, delimited with tabs and newlines.

See also

System.Object.ToString()

Member Data Documentation

I11

const int iText.Kernel.Geom.Matrix.I11 = 0

static

the row=1, col=1 position ('a') in the matrix.

I12

const int iText.Kernel.Geom.Matrix.I12 = 1

static

the row=1, col=2 position ('b') in the matrix.

I13

const int iText.Kernel.Geom.Matrix.I13 = 2

static

the row=1, col=3 position (always 0 for 2-D) in the matrix.

I21

const int iText.Kernel.Geom.Matrix.I21 = 3

static

the row=2, col=1 position ('c') in the matrix.

I22

const int iText.Kernel.Geom.Matrix.I22 = 4

static

the row=2, col=2 position ('d') in the matrix.

I23

const int iText.Kernel.Geom.Matrix.I23 = 5

static

the row=2, col=3 position (always 0 for 2-D) in the matrix.

I31

const int iText.Kernel.Geom.Matrix.I31 = 6

static

the row=3, col=1 ('e', or X translation) position in the matrix.

I32

const int iText.Kernel.Geom.Matrix.I32 = 7

static

the row=3, col=2 ('f', or Y translation) position in the matrix.

I33

const int iText.Kernel.Geom.Matrix.I33 = 8

static

the row=3, col=3 position (always 1 for 2-D) in the matrix.