AlignmentPatternFinder class

This class attempts to find alignment patterns in a QR Code. Alignment patterns look like finder patterns but are smaller and appear at regular intervals throughout the image.

At the moment this only looks for the bottom-right alignment pattern.

This is mostly a simplified copy of FinderPatternFinder. It is copied, pasted and stripped down here for maximum performance but does unfortunately duplicate some code.

This class is thread-safe but not reentrant. Each thread must allocate its own object.

@author Sean Owen

Constructors

AlignmentPatternFinder(BitMatrix _image, int _startX, int _startY, int _width, int _height, double _moduleSize, ResultPointCallback? _resultPointCallback)

Creates a finder that will look in a portion of the whole image.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

find() → AlignmentPattern

This method attempts to find the bottom-right alignment pattern in the image. It is a bit messy since it's pretty performance-critical and so is written to be fast foremost.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited