TAlignmentPatternFinder.crossCheckVertical Method

Definition

Unit:: ZXing.QrCode.Internal.AlignmentPatternFinder

Package:: QRCodeReader_FMX

After a horizontal scan finds a potential alignment pattern, this method "cross-checks" by scanning down vertically through the center of the possible alignment pattern to see if the same proportion is detected.

Delphi

function crossCheckVertical(const startI: Integer; const centerJ: Integer; const maxCount: Integer; const originalStateCountTotal: Integer): Single

Parameters

startI: Integer

row where an alignment pattern was detected

centerJ: Integer

center of the section that appears to cross an alignment pattern

maxCount: Integer

maximum reasonable number of modules that should be observed in any reading state, based on the results of the horizontal scan

originalStateCountTotal: Integer

The original state count total.

Returns

Single

vertical center of alignment pattern, or null if not found