Package com.google.zxing

Class ResultPoint

java.lang.Object

com.google.zxing.ResultPoint

Direct Known Subclasses:

AlignmentPattern, FinderPattern

public class ResultPoint
extends java.lang.Object

Encapsulates a point of interest in an image containing a barcode. Typically, this would be the location of a finder pattern or the corner of the barcode, for example.

Field Summary

Fields

Modifier and Type	Field	Description
private float	x
private float	y

Constructor Summary

Constructors

Constructor	Description
ResultPoint(float x, float y)

Method Summary

Modifier and Type	Method	Description
private static float	crossProductZ(ResultPoint pointA, ResultPoint pointB, ResultPoint pointC)	Returns the z component of the cross product between vectors BC and BA.
static float	distance(ResultPoint pattern1, ResultPoint pattern2)
boolean	equals(java.lang.Object other)
float	getX()
float	getY()
int	hashCode()
static void	orderBestPatterns(ResultPoint[] patterns)	Orders an array of three ResultPoints in an order [A,B,C] such that AB is less than AC and BC is less than AC, and the angle between BC and BA is less than 180 degrees.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

x

private final float x

y

private final float y

Constructor Detail

ResultPoint

public ResultPoint(float x,
                   float y)

Method Detail

getX

public final float getX()

getY

public final float getY()

equals

public final boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

hashCode

public final int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public final java.lang.String toString()

Overrides:

toString in class java.lang.Object

orderBestPatterns

public static void orderBestPatterns(ResultPoint[] patterns)

Orders an array of three ResultPoints in an order [A,B,C] such that AB is less than AC and BC is less than AC, and the angle between BC and BA is less than 180 degrees.

Parameters:

patterns - array of three ResultPoint to order

distance

public static float distance(ResultPoint pattern1,
                             ResultPoint pattern2)

Parameters:

pattern1 - first pattern

pattern2 - second pattern

Returns:

distance between two points

crossProductZ

private static float crossProductZ(ResultPoint pointA,
                                   ResultPoint pointB,
                                   ResultPoint pointC)

Returns the z component of the cross product between vectors BC and BA.