mrkad
/
php-qrcode
зеркало из https://github.com/chillerlan/php-qrcode.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
            <title>Documentation</title>
    
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <base href="../">
    <link rel="icon" href="images/favicon.ico"/>
    <link rel="stylesheet" href="css/normalize.css">
    <link rel="stylesheet" href="css/base.css">
            <link rel="preconnect" href="https://fonts.gstatic.com">
        <link href="https://fonts.googleapis.com/css2?family=Source+Sans+Pro:wght@400;600;700&display=swap" rel="stylesheet">
        <link href="https://fonts.googleapis.com/css2?family=Source+Code+Pro:wght@400;600;700&display=swap" rel="stylesheet">
        <link rel="stylesheet" href="css/template.css">
        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.0/css/all.min.css" integrity="sha256-ybRkN9dBjhcS2qrW1z+hfCxq+1aBdwyQM5wlQoQVt/0=" crossorigin="anonymous" />
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/themes/prism-okaidia.css">
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-numbers/prism-line-numbers.css">
        <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-highlight/prism-line-highlight.css">
                <script src="https://cdn.jsdelivr.net/npm/fuse.js@3.4.6"></script>
        <script src="https://cdn.jsdelivr.net/npm/css-vars-ponyfill@2"></script>
        <script src="js/search.js"></script>
        <script defer src="js/searchIndex.js"></script>
    </head>
<body id="top">
    <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"/>
            <line x1="12.4892" y1="12.2727" x2="19.1559" y2="18.9393" stroke="currentColor" stroke-width="3"/>
        </svg>
        <input type="search" class="phpdocumentor-field phpdocumentor-search__field" placeholder="Loading .." disabled />
    </label>
</section>

    <nav class="phpdocumentor-topnav">
    <ul class="phpdocumentor-topnav__menu">
        </ul>
</nav>
</header>

    <main class="phpdocumentor">
        <div class="phpdocumentor-section">
            <input class="phpdocumentor-sidebar__menu-button" type="checkbox" id="sidebar-button" name="sidebar-button" />
<label class="phpdocumentor-sidebar__menu-icon" for="sidebar-button">
    Menu
</label>
<aside class="phpdocumentor-column -four phpdocumentor-sidebar">
                    <section class="phpdocumentor-sidebar__category">
            <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">
            <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">
        <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">
        <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 -eight phpdocumentor-content">
                    <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">
    AlignmentPatternFinder

    
            <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>

        <aside class="phpdocumentor-element-found-in">
    <abbr class="phpdocumentor-element-found-in__file" title="src/Detector/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">31</span>

    </aside>

            <p class="phpdocumentor-summary">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.</p>

    <section class="phpdocumentor-description"><p>At the moment this only looks for the bottom-right alignment pattern.</p>
<p>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.</p>
<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="#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="#toc" class="headerlink"><i class="fas fa-link"></i></a>
</h3>

<dl class="phpdocumentor-table-of-contents">
                    <dt class="phpdocumentor-table-of-contents__entry -property -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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>
<dd></dd>

            <dt class="phpdocumentor-table-of-contents__entry -property -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#property_moduleSize">$moduleSize</a>
    <span>
                        &nbsp;: float            </span>
</dt>
<dd></dd>

            <dt class="phpdocumentor-table-of-contents__entry -property -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#property_possibleCenters">$possibleCenters</a>
    <span>
                        &nbsp;: array&lt;string|int, mixed&gt;            </span>
</dt>
<dd></dd>

                <dt class="phpdocumentor-table-of-contents__entry -method -public">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method___construct">__construct()</a>
    <span>
                                &nbsp;: mixed    </span>
</dt>
<dd>Creates a finder that will look in a portion of the whole image.</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -public">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method_find">find()</a>
    <span>
                                &nbsp;: <a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null    </span>
</dt>
<dd>This method attempts to find the bottom-right alignment pattern in the image. It is a bit messy since
it&#039;s pretty performance-critical and so is written to be fast foremost.</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method_centerFromEnd">centerFromEnd()</a>
    <span>
                                &nbsp;: float    </span>
</dt>
<dd>Given a count of black/white/black pixels just seen and an end position,
figures the location of the center of this black/white/black run.</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method_crossCheckVertical">crossCheckVertical()</a>
    <span>
                                &nbsp;: float|null    </span>
</dt>
<dd>After a horizontal scan finds a potential alignment pattern, this method
&quot;cross-checks&quot; by scanning down vertically through the center of the possible
alignment pattern to see if the same proportion is detected.</dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method_foundPatternCross">foundPatternCross()</a>
    <span>
                                &nbsp;: bool    </span>
</dt>
<dd></dd>

            <dt class="phpdocumentor-table-of-contents__entry -method -private">
    <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#method_handlePossibleCenter">handlePossibleCenter()</a>
    <span>
                                &nbsp;: <a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null    </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 see if this pattern had been
found on a previous horizontal scan. If so, we consider it confirmed and conclude we have
found the alignment pattern.</dd>

        </dl>


    <section class="phpdocumentor-properties">
        <h3 class="phpdocumentor-elements__header" id="properties">
            Properties
            <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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_matrix">
        $matrix
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">33</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>

        <section class="phpdocumentor-description"></section>

        <section class="phpdocumentor-description"></section>

    
</article>
                    <article
        class="
            phpdocumentor-element
            -property
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="property_moduleSize">
        $moduleSize
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#property_moduleSize" 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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.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">float</span>
    <span class="phpdocumentor-signature__name">$moduleSize</span>
    </code>

        <section class="phpdocumentor-description"></section>

        <section class="phpdocumentor-description"></section>

    
</article>
                    <article
        class="
            phpdocumentor-element
            -property
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="property_possibleCenters">
        $possibleCenters
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.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, mixed&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-AlignmentPatternFinder.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-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">44</span>

    </aside>

        <p class="phpdocumentor-summary">Creates a finder that will look in a portion of the whole image.</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__return-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">$matrix</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$moduleSize</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">mixed</span></code>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$matrix</span>
                : <span class="phpdocumentor-signature__argument__return-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>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$moduleSize</span>
                : <span class="phpdocumentor-signature__argument__return-type">float</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>estimated module size so far</p>
</section>

            </dd>
            </dl>

    
        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
    <span class="phpdocumentor-signature__response_type">mixed</span>
            &mdash;
        
    
</article>
                    <article
        class="phpdocumentor-element
            -method
            -public
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="method_find">
        find()
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">61</span>

    </aside>

        <p class="phpdocumentor-summary">This method attempts to find the bottom-right alignment pattern in the image. It is a bit messy since
it&#039;s pretty performance-critical and so is written to be fast foremost.</p>

    <code class="phpdocumentor-code phpdocumentor-signature ">
    <span class="phpdocumentor-signature__visibility">public</span>
                    <span class="phpdocumentor-signature__name">find</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$startX</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$startY</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$width</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$height</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span></code>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$startX</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>left column from which to start searching</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$startY</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>top row from which to start searching</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$width</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>width of region to search</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$height</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>height of region to search</p>
</section>

            </dd>
            </dl>

    
        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
    <span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span>
            &mdash;
        
    
</article>
                    <article
        class="phpdocumentor-element
            -method
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="method_centerFromEnd">
        centerFromEnd()
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">208</span>

    </aside>

        <p class="phpdocumentor-summary">Given a count of black/white/black pixels just seen and an end position,
figures the location of the center of this black/white/black 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__return-type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$end</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float</span></code>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$stateCount</span>
                : <span class="phpdocumentor-signature__argument__return-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-signature__argument__name">$end</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                
            </dd>
            </dl>

    
        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
    <span class="phpdocumentor-signature__response_type">float</span>
            &mdash;
        
    
</article>
                    <article
        class="phpdocumentor-element
            -method
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="method_crossCheckVertical">
        crossCheckVertical()
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">225</span>

    </aside>

        <p class="phpdocumentor-summary">After a horizontal scan finds a potential alignment pattern, this method
&quot;cross-checks&quot; by scanning down vertically through the center of the possible
alignment 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__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$startI</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$centerJ</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$maxCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$originalStateCountTotal</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type">float|null</span></code>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$startI</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>row where an alignment pattern was detected</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$centerJ</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>center of the section that appears to cross an alignment pattern</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$maxCount</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>maximum reasonable number of modules that should be
observed in any reading state, based on the results of the horizontal scan</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$originalStateCountTotal</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                
            </dd>
            </dl>

    
        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
    <span class="phpdocumentor-signature__response_type">float|null</span>
            &mdash;
            <section class="phpdocumentor-description"><p>vertical center of alignment pattern, or null if not found</p>
</section>

    
</article>
                    <article
        class="phpdocumentor-element
            -method
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="method_foundPatternCross">
        foundPatternCross()
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">152</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__return-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>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$stateCount</span>
                : <span class="phpdocumentor-signature__argument__return-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 pixels just read</p>
</section>

            </dd>
            </dl>

    
        <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 1/1/1 ratios
used by alignment patterns to be considered a match</p>
</section>

    
</article>
                    <article
        class="phpdocumentor-element
            -method
            -private
                                                        "
>
    <h4 class="phpdocumentor-element__name" id="method_handlePossibleCenter">
        handlePossibleCenter()
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.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/AlignmentPatternFinder.php"><a href="files/src-detector-alignmentpatternfinder.html"><abbr title="src/Detector/AlignmentPatternFinder.php">AlignmentPatternFinder.php</abbr></a></abbr>
    :
    <span class="phpdocumentor-element-found-in__line">176</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 see if this pattern had been
found on a previous horizontal scan. If so, we consider it confirmed and conclude we have
found the alignment pattern.</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__return-type">array&lt;string|int, int&gt;&nbsp;</span><span class="phpdocumentor-signature__argument__name">$stateCount</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$i</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">int&nbsp;</span><span class="phpdocumentor-signature__argument__name">$j</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span></code>

    
        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
    <dl class="phpdocumentor-argument-list">
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$stateCount</span>
                : <span class="phpdocumentor-signature__argument__return-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-signature__argument__name">$i</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>row where alignment pattern may be found</p>
</section>

            </dd>
                    <dt class="phpdocumentor-argument-list__entry">
                <span class="phpdocumentor-signature__argument__name">$j</span>
                : <span class="phpdocumentor-signature__argument__return-type">int</span>
                            </dt>
            <dd class="phpdocumentor-argument-list__definition">
                    <section class="phpdocumentor-description"><p>end of possible alignment pattern in row</p>
</section>

            </dd>
            </dl>

    
        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
    <span class="phpdocumentor-signature__response_type"><a href="classes/chillerlan-QRCode-Detector-AlignmentPattern.html"><abbr title="\chillerlan\QRCode\Detector\AlignmentPattern">AlignmentPattern</abbr></a>|null</span>
            &mdash;
            <section class="phpdocumentor-description"><p>if we have found the same pattern twice, or null if not</p>
</section>

    
</article>
            </section>

        
    <script type="text/javascript">
        function loadExternalCodeSnippets(line) {
            Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach((pre) => {
                var src = pre.getAttribute('data-src').replace( /\\/g, '/');
                var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
                var language = 'php';

                var code = document.createElement('code');
                code.className = 'language-' + language;

                pre.textContent = '';

                pre.setAttribute('data-line', line)
                code.textContent = 'Loading…';

                pre.appendChild(code);

                var xhr = new XMLHttpRequest();

                xhr.open('GET', src, true);

                xhr.onreadystatechange = function () {
                    if (xhr.readyState == 4) {

                        if (xhr.status < 400 && xhr.responseText) {
                            code.textContent = xhr.responseText;

                            Prism.highlightElement(code);
                        }
                        else if (xhr.status >= 400) {
                            code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
                        }
                        else {
                            code.textContent = '✖ Error: File does not exist, is empty or trying to view from localhost';
                        }
                    }
                };

                xhr.send(null);
            });
        }

        var modals = document.querySelectorAll("[data-modal]");

        modals.forEach(function (trigger) {
            trigger.addEventListener("click", function (event) {
                //event.preventDefault();
                const modal = document.getElementById(trigger.dataset.modal);
                modal.classList.add("phpdocumentor-modal__open");
                loadExternalCodeSnippets(trigger.dataset.line)
                const exits = modal.querySelectorAll("[data-exit-button]");
                exits.forEach(function (exit) {
                    exit.addEventListener("click", function (event) {
                        event.preventDefault();
                        modal.classList.remove("phpdocumentor-modal__open");
                    });
                });
            });
        });
    </script>

    </article>
                <section data-search-results class="phpdocumentor-search-results phpdocumentor-search-results--hidden">
    <section class="phpdocumentor-search-results__dialog">
        <header class="phpdocumentor-search-results__header">
            <h2 class="phpdocumentor-search-results__title">Search results</h2>
            <button class="phpdocumentor-search-results__close"><i class="fas fa-times"></i></button>
        </header>
        <section class="phpdocumentor-search-results__body">
            <ul class="phpdocumentor-search-results__entries"></ul>
        </section>
    </section>
</section>
            </div>
        </div>
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#top" class="phpdocumentor-back-to-top"><i class="fas fa-chevron-circle-up"></i></a>

    </main>

    <script>
        cssVars({});
    </script>
    <script src="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/prism.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/autoloader/prism-autoloader.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-numbers/prism-line-numbers.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/prismjs@1.23.0/plugins/line-highlight/prism-line-highlight.min.js"></script>
</body>
</html>