mrkad
/
php-qrcode
peilaus alkaen https://github.com/chillerlan/php-qrcode.git


			
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                <a href="namespaces/chillerlan-qrcodetest.html">QRCodeTest</a>
                
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                                    <h4 class="phpdocumentor-sidebar__root-namespace"><a href="packages/Application.html">Application</a></h4>

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        <h2 class="phpdocumentor-sidebar__category-header">Indices</h2>
        <h3 class="phpdocumentor-sidebar__root-package"><a href="indices/files.html">Files</a></h3>
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            <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_bitMatrix">$bitMatrix</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_bitMatrix">
        $bitMatrix
        <a href="classes/chillerlan-QRCode-Detector-AlignmentPatternFinder.html#property_bitMatrix" 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">$bitMatrix</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">$image</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">float&nbsp;</span><span class="phpdocumentor-signature__argument__name">$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">$image</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">209</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">226</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">177</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>

        
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