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<title>PerspectiveTransform (ZXing 3.5.4 API)</title>
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<div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">com.google.zxing.common</a></div>
<h1 title="Class PerspectiveTransform" class="title">Class PerspectiveTransform</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance">com.google.zxing.common.PerspectiveTransform</div>
</div>
<section class="class-description" id="class-description">
<hr>
<div class="type-signature"><span class="modifiers">public final class </span><span class="element-name type-name-label">PerspectiveTransform</span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
<div class="block"><p>This class implements a perspective transform in two dimensions. Given four source and four
destination points, it will compute the transformation implied between them. The code is based
directly upon section 3.4.2 of George Wolberg's "Digital Image Warping"; see pages 54-56.</p></div>
<dl class="notes">
<dt>Author:</dt>
<dd>Sean Owen</dd>
</dl>
</section>
<section class="summary">
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<!-- ========== METHOD SUMMARY =========== -->
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<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
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<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
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<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#quadrilateralToQuadrilateral(float,float,float,float,float,float,float,float,float,float,float,float,float,float,float,float)" class="member-name-link">quadrilateralToQuadrilateral</a><wbr>(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3,
float x0p,
float y0p,
float x1p,
float y1p,
float x2p,
float y2p,
float x3p,
float y3p)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#quadrilateralToSquare(float,float,float,float,float,float,float,float)" class="member-name-link">quadrilateralToSquare</a><wbr>(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#squareToQuadrilateral(float,float,float,float,float,float,float,float)" class="member-name-link">squareToQuadrilateral</a><wbr>(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transformPoints(float%5B%5D)" class="member-name-link">transformPoints</a><wbr>(float[] points)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#transformPoints(float%5B%5D,float%5B%5D)" class="member-name-link">transformPoints</a><wbr>(float[] xValues,
float[] yValues)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> </div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
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</section>
<section class="details">
<ul class="details-list">
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="quadrilateralToQuadrilateral(float,float,float,float,float,float,float,float,float,float,float,float,float,float,float,float)">
<h3>quadrilateralToQuadrilateral</h3>
<div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></span> <span class="element-name">quadrilateralToQuadrilateral</span><wbr><span class="parameters">(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3,
float x0p,
float y0p,
float x1p,
float y1p,
float x2p,
float y2p,
float x3p,
float y3p)</span></div>
</section>
</li>
<li>
<section class="detail" id="transformPoints(float[])">
<h3>transformPoints</h3>
<div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">transformPoints</span><wbr><span class="parameters">(float[] points)</span></div>
</section>
</li>
<li>
<section class="detail" id="transformPoints(float[],float[])">
<h3>transformPoints</h3>
<div class="member-signature"><span class="modifiers">public</span> <span class="return-type">void</span> <span class="element-name">transformPoints</span><wbr><span class="parameters">(float[] xValues,
float[] yValues)</span></div>
</section>
</li>
<li>
<section class="detail" id="squareToQuadrilateral(float,float,float,float,float,float,float,float)">
<h3>squareToQuadrilateral</h3>
<div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></span> <span class="element-name">squareToQuadrilateral</span><wbr><span class="parameters">(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3)</span></div>
</section>
</li>
<li>
<section class="detail" id="quadrilateralToSquare(float,float,float,float,float,float,float,float)">
<h3>quadrilateralToSquare</h3>
<div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="PerspectiveTransform.html" title="class in com.google.zxing.common">PerspectiveTransform</a></span> <span class="element-name">quadrilateralToSquare</span><wbr><span class="parameters">(float x0,
float y0,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3)</span></div>
</section>
</li>
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</section>
</li>
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