Package net.paulhertz.pixelaudio

Class DiagonalZigzagGen

java.lang.Object

net.paulhertz.pixelaudio.PixelMapGen

net.paulhertz.pixelaudio.DiagonalZigzagGen

public class DiagonalZigzagGen
extends PixelMapGen

Generates a PixelMapGen with a zigzag diagonal signal path. The path starts at (0,0) and (0,1), then goes diagonally from edge to edge in a continuous path.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	description

Fields inherited from class net.paulhertz.pixelaudio.PixelMapGen

coords, flipx, flipy, fx270, fx90, h, nada, pixelMap, r180, r270, r90, sampleMap, size, transArray, transformType, uniformTransArray, w

Constructor Summary

Constructors

Constructor	Description
DiagonalZigzagGen(int width, int height)
DiagonalZigzagGen(int width, int height, AffineTransformType type)

Method Summary

Modifier and Type	Method	Description
String	describe()	Returns a description of the mapping and initialization requirements of a PixelMapGen class.
int[]	generate()	Initialize this.coords, this.pixelMap, this.sampleMap.
private ArrayList<int[]>	generateCoordinates()	Generically-named method that calls the custom coordinate generation method (here, generateZigzagDiagonalCoordinates).
private ArrayList<int[]>	generateZigzagDiagonalCoordinates(int width, int height)	The coordinate generation method for this class.
protected void	requireValidDimensions(int width, int height)	Enforces a width and height greater than or equal to 2.
static MultiGen	zigzagLoop6x4(int genW, int genH)

Methods inherited from class net.paulhertz.pixelaudio.PixelMapGen

findNearestPowerOfTwoLessThan, findPowerOfTwo, getCoordinates, getCoordinatesCopy, getHeight, getInversMapFromPixelArray, getPixelMap, getPixelMapCopy, getPixelMapFromCoordinates, getSampleMap, getSampleMapCopy, getSize, getTransformType, getWidth, isPowerOfTwo, loadIndexMaps, randomTransform, randomUniformTransform, setMapsFromCoords, setTransformType, transformCoords

Methods inherited from class java.lang.Object

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

Field Details

description

public static final String description

See Also:

• Constant Field Values

Constructor Details

DiagonalZigzagGen

public DiagonalZigzagGen(int width,
 int height,
 AffineTransformType type)

Parameters:

width - PixelMapGen width

height - PixelMapGen height

type - an AffineTransformType to apply to the coordinates of the PixelMapGen

DiagonalZigzagGen

public DiagonalZigzagGen(int width,
 int height)

Parameters:

width - PixelMapGen width

height - PixelMapGen height

Method Details

describe

public String describe()

Description copied from class: PixelMapGen

Returns a description of the mapping and initialization requirements of a PixelMapGen class.

Specified by:

describe in class PixelMapGen

Returns:

A String describing this class's mapping and initialization requirements

requireValidDimensions

protected void requireValidDimensions(int width,
 int height)

Enforces a width and height greater than or equal to 2.

Specified by:

requireValidDimensions in class PixelMapGen

Throws:

IllegalArgumentException - if width and height are not greater than 1.

generate

public int[] generate()

Initialize this.coords, this.pixelMap, this.sampleMap.

Specified by:

generate in class PixelMapGen

Returns:

this.pixelMap, the value for PixelAudioMapper.signalToImageLUT.

generateCoordinates

private ArrayList<int[]> generateCoordinates()

Generically-named method that calls the custom coordinate generation method (here, generateZigzagDiagonalCoordinates). Consider putting additional initializations here, if required by your coordinate generation method, rather than in the generate() method, which will then only handle coords initialization and the built-in pixelMap and sampleMap initializations.

Returns:

An ArrayList of int[], bitmap coordinates in the order the signal mapping would visit them.

generateZigzagDiagonalCoordinates

private ArrayList<int[]> generateZigzagDiagonalCoordinates(int width,
 int height)

The coordinate generation method for this class. Both lookup tables are derived from the coordinate list created by this method. The initial step in the algorithm is down (y--).

Parameters:

width - width of the 2D bitmap pixel array

height - height of the 2D bitmap pixel array

Returns:

an array of coordinate pairs

zigzagLoop6x4

public static MultiGen zigzagLoop6x4(int genW,
 int genH)

Parameters:

genW - width of each zigzag gen

genH - height of each zigzag gen

Returns:

a looping MultiGen with 6 rows x 4 columns of DiagonalZigzagGen instances