com.google.zxing.qrcode.encoder

Class ByteMatrix

java.lang.Object

com.google.zxing.qrcode.encoder.ByteMatrix

public final class ByteMatrix
extends Object

JAVAPORT: The original code was a 2D array of ints, but since it only ever gets assigned -1, 0, and 1, I'm going to use less memory and go with bytes.

Constructor Summary

Constructors

Constructor and Description
ByteMatrix(int width, int height) Creates a new ByteMatrix with the specified dimensions.

Method Summary

Modifier and Type	Method and Description
void	clear(byte value) Clears all cells in the matrix to the specified value.
byte	get(int x, int y) Gets the value at the specified coordinates.
byte[][]	getArray()
int	getHeight()
int	getWidth()
void	set(int x, int y, boolean value) Sets the value at the specified coordinates using a boolean value.
void	set(int x, int y, byte value) Sets the value at the specified coordinates.
void	set(int x, int y, int value) Sets the value at the specified coordinates using an int value.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteMatrix

public ByteMatrix(int width,
                  int height)

Creates a new ByteMatrix with the specified dimensions.

Parameters:

width - the width of the matrix

height - the height of the matrix

Method Detail

clear

public void clear(byte value)

Clears all cells in the matrix to the specified value.

Parameters:

value - the byte value to set all cells to

get

public byte get(int x,
                int y)

Gets the value at the specified coordinates.

Parameters:

x - the x coordinate

y - the y coordinate

Returns:

the byte value at the specified position

getArray

public byte[][] getArray()

Returns:

an internal representation as bytes, in row-major order. array[y][x] represents point (x,y)

getHeight

public int getHeight()

Returns:

the height of the matrix

getWidth

public int getWidth()

Returns:

the width of the matrix

set

public void set(int x,
                int y,
                boolean value)

Sets the value at the specified coordinates using a boolean value.

Parameters:

x - the x coordinate

y - the y coordinate

value - the boolean value to set (true = 1, false = 0)

set

public void set(int x,
                int y,
                byte value)

Sets the value at the specified coordinates.

Parameters:

x - the x coordinate

y - the y coordinate

value - the byte value to set

set

public void set(int x,
                int y,
                int value)

Sets the value at the specified coordinates using an int value.

Parameters:

x - the x coordinate

y - the y coordinate

value - the int value to set (will be cast to byte)

toString

public String toString()

Overrides:

toString in class Object

Returns:

a string representation of this ByteMatrix