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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Documentation</title>
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<base href="../">
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<header class="phpdocumentor-header phpdocumentor-section">
<h1 class="phpdocumentor-title"><a href="" class="phpdocumentor-title__link">Documentation</a></h1>
<input class="phpdocumentor-header__menu-button" type="checkbox" id="menu-button" name="menu-button" />
<label class="phpdocumentor-header__menu-icon" for="menu-button">
<i class="fas fa-bars"></i>
</label>
<section data-search-form class="phpdocumentor-search">
<label>
<span class="visually-hidden">Search for</span>
<svg class="phpdocumentor-search__icon" width="21" height="20" viewBox="0 0 21 20" fill="none" xmlns="http://www.w3.org/2000/svg">
<circle cx="7.5" cy="7.5" r="6.5" stroke="currentColor" stroke-width="2"/>
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</label>
</section>
<nav class="phpdocumentor-topnav">
<ul class="phpdocumentor-topnav__menu">
<li class="phpdocumentor-topnav__menu-item -menu">
<a href="https://php-qrcode.readthedocs.io">
<span>
User Manual
</span>
</a>
</li>
<li class="phpdocumentor-topnav__menu-item -social">
<a href="https://github.com/chillerlan/php-qrcode">
<span>
<i class="fab fa-github"></i>
</span>
</a>
</li>
<li class="phpdocumentor-topnav__menu-item -social">
<a href="https://github.com/chillerlan/php-qrcode/discussions">
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</li>
</ul>
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<main class="phpdocumentor">
<div class="phpdocumentor-section">
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Menu
</label>
<aside class="phpdocumentor-column -three phpdocumentor-sidebar">
<section class="phpdocumentor-sidebar__category -namespaces">
<h2 class="phpdocumentor-sidebar__category-header">Namespaces</h2>
<h4 class="phpdocumentor-sidebar__root-namespace">
<a href="namespaces/chillerlan.html" class="">chillerlan</a>
</h4>
<ul class="phpdocumentor-list">
<li>
<a href="namespaces/chillerlan-qrcode.html" class="">QRCode</a>
</li>
<li>
<a href="namespaces/chillerlan-qrcodetest.html" class="">QRCodeTest</a>
</li>
</ul>
</section>
<section class="phpdocumentor-sidebar__category -packages">
<h2 class="phpdocumentor-sidebar__category-header">Packages</h2>
<h4 class="phpdocumentor-sidebar__root-namespace">
<a href="packages/Application.html" class="">Application</a>
</h4>
</section>
<section class="phpdocumentor-sidebar__category -reports">
<h2 class="phpdocumentor-sidebar__category-header">Reports</h2>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/deprecated.html">Deprecated</a></h3>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/errors.html">Errors</a></h3>
<h3 class="phpdocumentor-sidebar__root-package"><a href="reports/markers.html">Markers</a></h3>
</section>
<section class="phpdocumentor-sidebar__category -indices">
<h2 class="phpdocumentor-sidebar__category-header">Indices</h2>
<h3 class="phpdocumentor-sidebar__root-package"><a href="indices/files.html">Files</a></h3>
</section>
</aside>
<div class="phpdocumentor-column -nine phpdocumentor-content">
<section>
<ul class="phpdocumentor-breadcrumbs">
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan.html">chillerlan</a></li>
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan-qrcode.html">QRCode</a></li>
<li class="phpdocumentor-breadcrumb"><a href="namespaces/chillerlan-qrcode-detector.html">Detector</a></li>
</ul>
<article class="phpdocumentor-element -class">
<h2 class="phpdocumentor-content__title">
FinderPatternFinder
<div class="phpdocumentor-element__package">
in package
<ul class="phpdocumentor-breadcrumbs">
<li class="phpdocumentor-breadcrumb"><a href="packages/Application.html">Application</a></li>
</ul>
</div>
</h2>
<div class="phpdocumentor-label-line">
<div class="phpdocumentor-label phpdocumentor-label--success"><span>Final</span><span>Yes</span></div>
</div>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">27</span>
</aside>
<p class="phpdocumentor-summary">This class attempts to find finder patterns in a QR Code. Finder patterns are the square
markers at three corners of a QR Code.</p>
<section class="phpdocumentor-description"><p>This class is thread-safe but not reentrant. Each thread must allocate its own object.</p>
</section>
<h5 class="phpdocumentor-tag-list__heading" id="tags">
Tags
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">author</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>Sean Owen</p>
</section>
</dd>
</dl>
<h3 id="toc">
Table of Contents
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<h4 id="toc-constants">
Constants
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-constants" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<dl class="phpdocumentor-table-of-contents">
<dt class="phpdocumentor-table-of-contents__entry -constant -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_CENTER_QUORUM">CENTER_QUORUM</a>
<span>
&nbsp;: int&nbsp;= 2 </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -constant -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_crossCheckStateCount">crossCheckStateCount</a>
<span>
&nbsp;: array&lt;string|int, mixed&gt;&nbsp;= [0, 0, 0, 0, 0] </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -constant -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MAX_MODULES">MAX_MODULES</a>
<span>
&nbsp;: int&nbsp;= 177 </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -constant -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MIN_SKIP">MIN_SKIP</a>
<span>
&nbsp;: int&nbsp;= 2 </span>
</dt>
</dl>
<h4 id="toc-properties">
Properties
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-properties" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<dl class="phpdocumentor-table-of-contents">
<dt class="phpdocumentor-table-of-contents__entry -property -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_hasSkipped">$hasSkipped</a>
<span>
&nbsp;: bool </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -property -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_matrix">$matrix</a>
<span>
&nbsp;: <a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a> </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -property -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_possibleCenters">$possibleCenters</a>
<span>
&nbsp;: array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt; </span>
</dt>
</dl>
<h4 id="toc-methods">
Methods
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-methods" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<dl class="phpdocumentor-table-of-contents">
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method___construct">__construct()</a>
<span>
&nbsp;: mixed </span>
</dt>
<dd>Creates a finder that will search the image for three finder patterns.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -public">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_find">find()</a>
<span>
&nbsp;: array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt; </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_centerFromEnd">centerFromEnd()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>Given a count of black/white/black/white/black pixels just seen and an end position,
figures the location of the center of this run.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckDiagonal">crossCheckDiagonal()</a>
<span>
&nbsp;: bool </span>
</dt>
<dd>After a vertical and horizontal scan finds a potential finder pattern, this method
&quot;cross-cross-cross-checks&quot; by scanning down diagonally through the center of the possible
finder pattern to see if the same proportion is detected.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckHorizontal">crossCheckHorizontal()</a>
<span>
&nbsp;: float|null </span>
</dt>
<dd>Like #crossCheckVertical(int, int, int, int), and in fact is basically identical,
except it reads horizontally instead of vertically. This is used to cross-cross
check a vertical cross-check and locate the real center of the alignment pattern.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckVertical">crossCheckVertical()</a>
<span>
&nbsp;: float|null </span>
</dt>
<dd>After a horizontal scan finds a potential finder pattern, this method
&quot;cross-checks&quot; by scanning down vertically through the center of the possible
finder pattern to see if the same proportion is detected.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossProductZ">crossProductZ()</a>
<span>
&nbsp;: float </span>
</dt>
<dd>Returns the z component of the cross product between vectors BC and BA.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_doShiftCounts2">doShiftCounts2()</a>
<span>
&nbsp;: array&lt;string|int, int&gt; </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_findRowSkip">findRowSkip()</a>
<span>
&nbsp;: int </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternCross">foundPatternCross()</a>
<span>
&nbsp;: bool </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternDiagonal">foundPatternDiagonal()</a>
<span>
&nbsp;: bool </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternVariance">foundPatternVariance()</a>
<span>
&nbsp;: bool </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_handlePossibleCenter">handlePossibleCenter()</a>
<span>
&nbsp;: bool </span>
</dt>
<dd>This is called when a horizontal scan finds a possible alignment pattern. It will
cross-check with a vertical scan, and if successful, will, ah, cross-cross-check
with another horizontal scan. This is needed primarily to locate the real horizontal
center of the pattern in cases of extreme skew.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_haveMultiplyConfirmedCenters">haveMultiplyConfirmedCenters()</a>
<span>
&nbsp;: bool </span>
</dt>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_orderBestPatterns">orderBestPatterns()</a>
<span>
&nbsp;: array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt; </span>
</dt>
<dd>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.</dd>
<dt class="phpdocumentor-table-of-contents__entry -method -private">
<a class="" href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_selectBestPatterns">selectBestPatterns()</a>
<span>
&nbsp;: array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt; </span>
</dt>
</dl>
<section class="phpdocumentor-constants">
<h3 class="phpdocumentor-elements__header" id="constants">
Constants
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constants" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article class="phpdocumentor-element -constant -private ">
<h4 class="phpdocumentor-element__name" id="constant_CENTER_QUORUM">
CENTER_QUORUM
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_CENTER_QUORUM" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">31</span>
</aside>
<code class="phpdocumentor-signature phpdocumentor-code ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">int</span>
<span class="phpdocumentor-signature__name">CENTER_QUORUM</span>
= <span class="phpdocumentor-signature__default-value">2</span>
</code>
</article>
<article class="phpdocumentor-element -constant -private ">
<h4 class="phpdocumentor-element__name" id="constant_crossCheckStateCount">
crossCheckStateCount
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_crossCheckStateCount" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">33</span>
</aside>
<code class="phpdocumentor-signature phpdocumentor-code ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">array&lt;string|int, mixed&gt;</span>
<span class="phpdocumentor-signature__name">crossCheckStateCount</span>
= <span class="phpdocumentor-signature__default-value">[0, 0, 0, 0, 0]</span>
</code>
</article>
<article class="phpdocumentor-element -constant -private ">
<h4 class="phpdocumentor-element__name" id="constant_MAX_MODULES">
MAX_MODULES
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MAX_MODULES" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">30</span>
</aside>
<code class="phpdocumentor-signature phpdocumentor-code ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">int</span>
<span class="phpdocumentor-signature__name">MAX_MODULES</span>
= <span class="phpdocumentor-signature__default-value">177</span>
</code>
</article>
<article class="phpdocumentor-element -constant -private ">
<h4 class="phpdocumentor-element__name" id="constant_MIN_SKIP">
MIN_SKIP
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MIN_SKIP" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">29</span>
</aside>
<code class="phpdocumentor-signature phpdocumentor-code ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">int</span>
<span class="phpdocumentor-signature__name">MIN_SKIP</span>
= <span class="phpdocumentor-signature__default-value">2</span>
</code>
</article>
</section>
<section class="phpdocumentor-properties">
<h3 class="phpdocumentor-elements__header" id="properties">
Properties
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#properties" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article
class="
phpdocumentor-element
-property
-private
"
>
<h4 class="phpdocumentor-element__name" id="property_hasSkipped">
$hasSkipped
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_hasSkipped" class="headerlink"><i class="fas fa-link"></i></a>
<span class="phpdocumentor-element__modifiers">
</span>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">37</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">bool</span>
<span class="phpdocumentor-signature__name">$hasSkipped</span>
= <span class="phpdocumentor-signature__default-value">false</span></code>
</article>
<article
class="
phpdocumentor-element
-property
-private
"
>
<h4 class="phpdocumentor-element__name" id="property_matrix">
$matrix
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_matrix" class="headerlink"><i class="fas fa-link"></i></a>
<span class="phpdocumentor-element__modifiers">
</span>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">34</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a></span>
<span class="phpdocumentor-signature__name">$matrix</span>
</code>
</article>
<article
class="
phpdocumentor-element
-property
-private
"
>
<h4 class="phpdocumentor-element__name" id="property_possibleCenters">
$possibleCenters
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_possibleCenters" class="headerlink"><i class="fas fa-link"></i></a>
<span class="phpdocumentor-element__modifiers">
</span>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">36</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span>
<span class="phpdocumentor-signature__name">$possibleCenters</span>
</code>
</article>
</section>
<section class="phpdocumentor-methods">
<h3 class="phpdocumentor-elements__header" id="methods">
Methods
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#methods" class="headerlink"><i class="fas fa-link"></i></a>
</h3>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method___construct">
__construct()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method___construct" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">44</span>
</aside>
<p class="phpdocumentor-summary">Creates a finder that will search the image for three finder patterns.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">__construct</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$matrix</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$matrix</span>
: <span class="phpdocumentor-argument-list__argument__type"><a href="classes/chillerlan-QRCode-Decoder-BitMatrix.html"><abbr title="\chillerlan\QRCode\Decoder\BitMatrix">BitMatrix</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>image to search</p>
</section>
</dd>
</dl>
</article>
<article
class="phpdocumentor-element
-method
-public
"
>
<h4 class="phpdocumentor-element__name" id="method_find">
find()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_find" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">52</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">public</span>
<span class="phpdocumentor-signature__name">find</span><span>(</span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span></code>
<div class="phpdocumentor-label-line">
</div>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_centerFromEnd">
centerFromEnd()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_centerFromEnd" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">184</span>
</aside>
<p class="phpdocumentor-summary">Given a count of black/white/black/white/black pixels just seen and an end position,
figures the location of the center of this run.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">centerFromEnd</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$end</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$end</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_crossCheckDiagonal">
crossCheckDiagonal()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckDiagonal" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">248</span>
</aside>
<p class="phpdocumentor-summary">After a vertical and horizontal scan finds a potential finder pattern, this method
&quot;cross-cross-cross-checks&quot; by scanning down diagonally through the center of the possible
finder pattern to see if the same proportion is detected.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">crossCheckDiagonal</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$centerI</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$centerJ</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$centerI</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>row where a finder pattern was detected</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$centerJ</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>center of the section that appears to cross a finder pattern</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
&mdash;
<section class="phpdocumentor-description"><p>true if proportions are withing expected limits</p>
</section>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_crossCheckHorizontal">
crossCheckHorizontal()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckHorizontal" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">415</span>
</aside>
<p class="phpdocumentor-summary">Like #crossCheckVertical(int, int, int, int), and in fact is basically identical,
except it reads horizontally instead of vertically. This is used to cross-cross
check a vertical cross-check and locate the real center of the alignment pattern.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">crossCheckHorizontal</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$startJ</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$centerI</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$maxCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$originalStateCountTotal</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float|null</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$startJ</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$centerI</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$maxCount</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$originalStateCountTotal</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="method_crossCheckHorizontal_tags">
Tags
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckHorizontal_tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">noinspection</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>DuplicatedCode</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float|null</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_crossCheckVertical">
crossCheckVertical()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckVertical" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">331</span>
</aside>
<p class="phpdocumentor-summary">After a horizontal scan finds a potential finder pattern, this method
&quot;cross-checks&quot; by scanning down vertically through the center of the possible
finder pattern to see if the same proportion is detected.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">crossCheckVertical</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$startI</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$centerJ</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$maxCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$originalStateCountTotal</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float|null</span></code>
<div class="phpdocumentor-label-line">
</div>
<section class="phpdocumentor-description"><p>$startI row where a finder pattern was detected
$centerJ center of the section that appears to cross a finder pattern
$maxCount maximum reasonable number of modules that should be
observed in any reading state, based on the results of the horizontal scan
$originalStateCountTotal</p>
<p>returns vertical center of finder pattern, or null if not found</p>
</section>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$startI</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$centerJ</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$maxCount</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$originalStateCountTotal</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<h5 class="phpdocumentor-tag-list__heading" id="method_crossCheckVertical_tags">
Tags
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckVertical_tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">noinspection</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<section class="phpdocumentor-description"><p>DuplicatedCode</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float|null</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_crossProductZ">
crossProductZ()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossProductZ" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">761</span>
</aside>
<p class="phpdocumentor-summary">Returns the z component of the cross product between vectors BC and BA.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">crossProductZ</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$a</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$b</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&nbsp;</span><span class="phpdocumentor-signature__argument__name">$c</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$a</span>
: <span class="phpdocumentor-argument-list__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$b</span>
: <span class="phpdocumentor-argument-list__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$c</span>
: <span class="phpdocumentor-argument-list__argument__type"><a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a></span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">float</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_doShiftCounts2">
doShiftCounts2()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_doShiftCounts2" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">168</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">doShiftCounts2</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, int&gt;</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">array&lt;string|int, int&gt;</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_findRowSkip">
findRowSkip()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_findRowSkip" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">551</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">findRowSkip</span><span>(</span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">int</span></code>
<div class="phpdocumentor-label-line">
</div>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">int</span>
&mdash;
<section class="phpdocumentor-description"><p>number of rows we could safely skip during scanning, based on the first
two finder patterns that have been located. In some cases their position will
allow us to infer that the third pattern must lie below a certain point farther
down in the image.</p>
</section>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_foundPatternCross">
foundPatternCross()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternCross" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">191</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">foundPatternCross</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_foundPatternDiagonal">
foundPatternDiagonal()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternDiagonal" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">199</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">foundPatternDiagonal</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_foundPatternVariance">
foundPatternVariance()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternVariance" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">210</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">foundPatternVariance</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$variance</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>count of black/white/black/white/black pixels just read</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$variance</span>
: <span class="phpdocumentor-argument-list__argument__type">float</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
&mdash;
<section class="phpdocumentor-description"><p>true if the proportions of the counts is close enough to the 1/1/3/1/1 ratios
used by finder patterns to be considered a match</p>
</section>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_handlePossibleCenter">
handlePossibleCenter()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_handlePossibleCenter" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">508</span>
</aside>
<p class="phpdocumentor-summary">This is called when a horizontal scan finds a possible alignment pattern. It will
cross-check with a vertical scan, and if successful, will, ah, cross-cross-check
with another horizontal scan. This is needed primarily to locate the real horizontal
center of the pattern in cases of extreme skew.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">handlePossibleCenter</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$i</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$j</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<section class="phpdocumentor-description"><p>And then we cross-cross-cross check with another diagonal scan.</p>
<p>If that succeeds the finder pattern location is added to a list that tracks
the number of times each location has been nearly-matched as a finder pattern.
Each additional find is more evidence that the location is in fact a finder
pattern center</p>
</section>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$stateCount</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, int&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>reading state module counts from horizontal scan</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$i</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>row where finder pattern may be found</p>
</section>
</dd>
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$j</span>
: <span class="phpdocumentor-argument-list__argument__type">int</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>end of possible finder pattern in row</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
&mdash;
<section class="phpdocumentor-description"><p>if a finder pattern candidate was found this time</p>
</section>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_haveMultiplyConfirmedCenters">
haveMultiplyConfirmedCenters()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_haveMultiplyConfirmedCenters" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">589</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">haveMultiplyConfirmedCenters</span><span>(</span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">bool</span></code>
<div class="phpdocumentor-label-line">
</div>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">bool</span>
&mdash;
<section class="phpdocumentor-description"><p>true if we have found at least 3 finder patterns that have been detected
at least #CENTER_QUORUM times each, and, the estimated module size of the
candidates is &quot;pretty similar&quot;</p>
</section>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_orderBestPatterns">
orderBestPatterns()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_orderBestPatterns" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">727</span>
</aside>
<p class="phpdocumentor-summary">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.</p>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">orderBestPatterns</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$patterns</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
<dl class="phpdocumentor-argument-list">
<dt class="phpdocumentor-argument-list__entry">
<span class="phpdocumentor-argument-list__argument__name">$patterns</span>
: <span class="phpdocumentor-argument-list__argument__type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span>
</dt>
<dd class="phpdocumentor-argument-list__definition">
<section class="phpdocumentor-description"><p>array of three FinderPattern to order</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span>
</section>
</article>
<article
class="phpdocumentor-element
-method
-private
"
>
<h4 class="phpdocumentor-element__name" id="method_selectBestPatterns">
selectBestPatterns()
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_selectBestPatterns" class="headerlink"><i class="fas fa-link"></i></a>
</h4>
<aside class="phpdocumentor-element-found-in">
<abbr class="phpdocumentor-element-found-in__file" title="src/Detector/FinderPatternFinder.php"><a href="files/src-detector-finderpatternfinder.html"><abbr title="src/Detector/FinderPatternFinder.php">FinderPatternFinder.php</abbr></a></abbr>
:
<span class="phpdocumentor-element-found-in__line">624</span>
</aside>
<code class="phpdocumentor-code phpdocumentor-signature ">
<span class="phpdocumentor-signature__visibility">private</span>
<span class="phpdocumentor-signature__name">selectBestPatterns</span><span>(</span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span></code>
<div class="phpdocumentor-label-line">
</div>
<h5 class="phpdocumentor-tag-list__heading" id="method_selectBestPatterns_tags">
Tags
<a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_selectBestPatterns_tags" class="headerlink"><i class="fas fa-link"></i></a>
</h5>
<dl class="phpdocumentor-tag-list">
<dt class="phpdocumentor-tag-list__entry">
<span class="phpdocumentor-tag__name">throws</span>
</dt>
<dd class="phpdocumentor-tag-list__definition">
<span class="phpdocumentor-tag-link"><a href="classes/chillerlan-QRCode-Detector-QRCodeDetectorException.html"><abbr title="\chillerlan\QRCode\Detector\QRCodeDetectorException">QRCodeDetectorException</abbr></a></span>
<section class="phpdocumentor-description"><p>if 3 such finder patterns do not exist</p>
</section>
</dd>
</dl>
<section>
<h5 class="phpdocumentor-return-value__heading">Return values</h5>
<span class="phpdocumentor-signature__response_type">array&lt;string|int, <a href="classes/chillerlan-QRCode-Detector-FinderPattern.html"><abbr title="\chillerlan\QRCode\Detector\FinderPattern">FinderPattern</abbr></a>&gt;</span>
&mdash;
<section class="phpdocumentor-description"><p>the 3 best FinderPatterns from our list of candidates. The &quot;best&quot; are
those that have been detected at least #CENTER_QUORUM times, and whose module
size differs from the average among those patterns the least</p>
</section>
</section>
</article>
</section>
</article>
</section>
<section class="phpdocumentor-on-this-page__sidebar">
<section class="phpdocumentor-on-this-page__content">
<strong class="phpdocumentor-on-this-page__title">On this page</strong>
<ul class="phpdocumentor-list -clean">
<li class="phpdocumentor-on-this-page-section__title">Table Of Contents</li>
<li>
<ul class="phpdocumentor-list -clean">
<li><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-constants">Constants</a></li>
<li><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-properties">Properties</a></li>
<li><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#toc-methods">Methods</a></li>
</ul>
</li>
<li class="phpdocumentor-on-this-page-section__title">Constants</li>
<li>
<ul class="phpdocumentor-list -clean">
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_CENTER_QUORUM">CENTER_QUORUM</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_crossCheckStateCount">crossCheckStateCount</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MAX_MODULES">MAX_MODULES</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#constant_MIN_SKIP">MIN_SKIP</a></li>
</ul>
</li>
<li class="phpdocumentor-on-this-page-section__title">Properties</li>
<li>
<ul class="phpdocumentor-list -clean">
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_hasSkipped">$hasSkipped</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_matrix">$matrix</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#property_possibleCenters">$possibleCenters</a></li>
</ul>
</li>
<li class="phpdocumentor-on-this-page-section__title">Methods</li>
<li>
<ul class="phpdocumentor-list -clean">
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method___construct">__construct()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_find">find()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_centerFromEnd">centerFromEnd()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckDiagonal">crossCheckDiagonal()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckHorizontal">crossCheckHorizontal()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossCheckVertical">crossCheckVertical()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_crossProductZ">crossProductZ()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_doShiftCounts2">doShiftCounts2()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_findRowSkip">findRowSkip()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternCross">foundPatternCross()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternDiagonal">foundPatternDiagonal()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_foundPatternVariance">foundPatternVariance()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_handlePossibleCenter">handlePossibleCenter()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_haveMultiplyConfirmedCenters">haveMultiplyConfirmedCenters()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_orderBestPatterns">orderBestPatterns()</a></li>
<li class=""><a href="classes/chillerlan-QRCode-Detector-FinderPatternFinder.html#method_selectBestPatterns">selectBestPatterns()</a></li>
</ul>
</li>
</ul>
</section>
</section>
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<ul class="phpdocumentor-search-results__entries"></ul>
</section>
</section>
</section>
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