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Java Source Code / Java Documentation » PDF » jPod » de.intarsys.pdf.cds

Source Cross Reference Class Diagram Java Document (Java Doc)

de.intarsys.pdf.cds .CDSBase

de.intarsys.pdf.cds .CDSMatrix

CDSMatrix

public class CDSMatrix extends CDSBase (Code)

The implementation of the pdf transformation matrix.

Each matrix is represented as an array.

 The transformation matrix:
 +       +
 | a b 0 |
 | c d 0 |
 | e f 1 |
 +       +
 is written as a COSArray in the form:
 [ a b c d e f ]
 The identity transformation has the form:
 [ 1 0 0 1 0 0 ]

Coordinates could be transformed by a matrix.

 A coordinate transformation is defined as:
 +       +
 | a b 0 |
 [ x' y' 1 ] = [ x y 1] * | c d 0 |
 | e f 1 |
 +       +
 so that
 x' = x*a + y*c + e
 y' = x*b + y*d + f

Field Summary
public static float[]	MATRIX_0
public static float[]	MATRIX_180
public static float[]	MATRIX_270
public static float[]	MATRIX_90

Constructor Summary
public	CDSMatrix() CDSMatrix constructor.
public	CDSMatrix(float[] data) Create a CDSMatrix based on the array in the parameter.
protected	CDSMatrix(COSArray newM) Create a CDSMatrix based on the array in the parameter.

Method Summary
public CDSMatrix	copy()
public static CDSMatrix	createFromCOS(COSArray array) Create a CDSMatrix from an `array` holding the transformation parameters.
public float	getA() Return the matrix element "a".
public float	getB() Return the matrix element "b".
public float	getC() Return the matrix element "c".
public float	getD() Return the matrix element "d".
public float	getE() Return the matrix element "e".
public float	getF() Return the matrix element "f".
public void	invalidateCaches()
public void	rotate(float angle) Concatenate this transformation with a rotation transformation.
public void	scale(float[] v) Concatenate this transformation with a scaling transformation.
public void	setA(float num) Set the matrix element "a".
public void	setB(float num) Set the matrix element "b".
public void	setC(float num) Set the matrix element "c".
public void	setD(float num) Set the matrix element "d".
public void	setE(float num) Set the matrix element "e".
public void	setF(float num) Set the matrix element "f".
public void	setTransformation(float a, float b, float c, float d, float e, float f)
public void	setTransformation(float[] data)
public void	setTransformation(AffineTransform transform)
public AffineTransform	toTransform() Create an AffineTransform that corresponds to this.
public float[]	transform(float[] v) Transform a vector `v` using this. Parameters: v - The vector that will be transformed.
public void	translate(float[] v) Concatenate this transformation with a translation transformation.
public void	translate(float x, float y) Concatenate this transformation with a translation transformation.

Field Detail

MATRIX_0
public static float[] MATRIX_0(Code)
	Static information needed for rotation: rotate 0 degress (identity matrix)

MATRIX_180
public static float[] MATRIX_180(Code)
	Static information needed for rotation: rotate 180 degrees

MATRIX_270
public static float[] MATRIX_270(Code)
	Static information needed for rotation: rotate 270 degrees

MATRIX_90
public static float[] MATRIX_90(Code)
	Static information needed for rotation: rotate 90 degrees

Constructor Detail

CDSMatrix
public CDSMatrix()(Code)
	CDSMatrix constructor. Create a new identity matrix

CDSMatrix
public CDSMatrix(float[] data)(Code)
	Create a CDSMatrix based on the array in the parameter. The array must have 6 elements. Parameters: data - The array defining the matrix.

CDSMatrix
protected CDSMatrix(COSArray newM)(Code)
	Create a CDSMatrix based on the array in the parameter. Parameters: newM - The array defining the matrix.

Method Detail

copy
public CDSMatrix copy()(Code)
	Create a copy of the receiver a new copy of the receiver

createFromCOS
public static CDSMatrix createFromCOS(COSArray array)(Code)
	Create a CDSMatrix from an `array` holding the transformation parameters. Parameters: array - The base COSArray Create a CDSMatrix from `array`

getA
public float getA()(Code)
	Return the matrix element "a". The matrix element "a".

getB
public float getB()(Code)
	Return the matrix element "b". The matrix element "b".

getC
public float getC()(Code)
	Return the matrix element "c". The matrix element "c".

getD
public float getD()(Code)
	Return the matrix element "d". The matrix element "d".

getE
public float getE()(Code)
	Return the matrix element "e". The matrix element "e".

getF
public float getF()(Code)
	Return the matrix element "f". The matrix element "f".

invalidateCaches
public void invalidateCaches()(Code)

rotate
public void rotate(float angle)(Code)
	Concatenate this transformation with a rotation transformation. Parameters: angle - Rotation angle in radians

scale
public void scale(float[] v)(Code)
	Concatenate this transformation with a scaling transformation. Parameters: v - The scale factor.

setA
public void setA(float num)(Code)
	Set the matrix element "a". Parameters: num - The new matrix element "a".

setB
public void setB(float num)(Code)
	Set the matrix element "b". Parameters: num - The new matrix element "b".

setC
public void setC(float num)(Code)
	Set the matrix element "c". Parameters: num - The new matrix element "c".

setD
public void setD(float num)(Code)
	Set the matrix element "d". Parameters: num - The new matrix element "d".

setE
public void setE(float num)(Code)
	Set the matrix element "e". Parameters: num - The new matrix element "e".

setF
public void setF(float num)(Code)
	Set the matrix element "f". Parameters: num - The new matrix element "f".

setTransformation
public void setTransformation(float a, float b, float c, float d, float e, float f)(Code)
	Set all matrix elements "a" - "f" Parameters: a - The new matrix element "a". Parameters: b - The new matrix element "b". Parameters: c - The new matrix element "c". Parameters: d - The new matrix element "d". Parameters: e - The new matrix element "e". Parameters: f - The new matrix element "f".

setTransformation
public void setTransformation(float[] data)(Code)
	Set all matrix elements "a" - "f" Parameters: data - The array defining the new parameters

setTransformation
public void setTransformation(AffineTransform transform)(Code)
	Set all matrix elements "a" - "f" Parameters: transform - The matrix defining the new parameters

toTransform
public AffineTransform toTransform()(Code)
	Create an AffineTransform that corresponds to this. Create an AffineTransform that corresponds to this.

transform
public float[] transform(float[] v)(Code)
	Transform a vector `v` using this. Parameters: v - The vector that will be transformed. The transformed vector.

translate
public void translate(float[] v)(Code)
	Concatenate this transformation with a translation transformation. Parameters: v - The transaltion definition

translate
public void translate(float x, float y)(Code)
	Concatenate this transformation with a translation transformation. Parameters: x - The translation in x direction Parameters: y - The translation in y direction

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