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<title>Adjusts the current affine transformation matrix</title>
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<h1 class="refname">ImagickDraw::affine</h1>
<p class="verinfo">(PECL imagick 2.0.0)</p><p class="refpurpose"><span class="refname">ImagickDraw::affine</span> — <span class="dc-title">Adjusts the current affine transformation matrix</span></p>
</div>
<div class="refsect1 description" id="refsect1-imagickdraw.affine-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>ImagickDraw::affine</strong></span>
( <span class="methodparam"><span class="type">array</span> <code class="parameter">$affine</code></span>
)</div>
<div class="warning"><strong class="warning">Warning</strong><p class="simpara">This function is
currently not documented; only its argument list is available.
</p></div>
<p class="para">
Adjusts the current affine transformation matrix with the specified affine
transformation matrix.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-imagickdraw.affine-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">affine</code></dt>
<dd>
<p class="para">
Affine matrix parameters
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-imagickdraw.affine-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<div class="refsect1 examples" id="refsect1-imagickdraw.affine-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4060">
<p><strong>Example #1 <span class="function"><strong>ImagickDraw::affine()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #007700">function </span><span style="color: #0000BB">affine</span><span style="color: #007700">(</span><span style="color: #0000BB">$strokeColor</span><span style="color: #007700">, </span><span style="color: #0000BB">$fillColor</span><span style="color: #007700">, </span><span style="color: #0000BB">$backgroundColor</span><span style="color: #007700">) {<br /><br /> </span><span style="color: #0000BB">$draw </span><span style="color: #007700">= new \</span><span style="color: #0000BB">ImagickDraw</span><span style="color: #007700">();<br /><br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeWidth</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeOpacity</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeColor</span><span style="color: #007700">(</span><span style="color: #0000BB">$strokeColor</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setFillColor</span><span style="color: #007700">(</span><span style="color: #0000BB">$fillColor</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">setStrokeWidth</span><span style="color: #007700">(</span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$PI </span><span style="color: #007700">= </span><span style="color: #0000BB">3.141592653589794</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">$angle </span><span style="color: #007700">= </span><span style="color: #0000BB">60 </span><span style="color: #007700">* </span><span style="color: #0000BB">$PI </span><span style="color: #007700">/ </span><span style="color: #0000BB">360</span><span style="color: #007700">;<br /><br /> </span><span style="color: #FF8000">//Scale the drawing co-ordinates.<br /> </span><span style="color: #0000BB">$affineScale </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"sx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1.75</span><span style="color: #007700">, </span><span style="color: #DD0000">"sy" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1.75</span><span style="color: #007700">, </span><span style="color: #DD0000">"rx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ry" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"tx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ty" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//Shear the drawing co-ordinates.<br /> </span><span style="color: #0000BB">$affineShear </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"sx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"sy" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"rx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">sin</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"ry" </span><span style="color: #007700">=> -</span><span style="color: #0000BB">sin</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"tx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ty" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//Rotate the drawing co-ordinates. The shear affine matrix<br /> //produces incorrectly scaled drawings.<br /> </span><span style="color: #0000BB">$affineRotate </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"sx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">cos</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"sy" </span><span style="color: #007700">=> </span><span style="color: #0000BB">cos</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"rx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">sin</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"ry" </span><span style="color: #007700">=> -</span><span style="color: #0000BB">sin</span><span style="color: #007700">(</span><span style="color: #0000BB">$angle</span><span style="color: #007700">), </span><span style="color: #DD0000">"tx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ty" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">,);<br /><br /> </span><span style="color: #FF8000">//Translate (offset) the drawing<br /> </span><span style="color: #0000BB">$affineTranslate </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"sx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"sy" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"rx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ry" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"tx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">30</span><span style="color: #007700">, </span><span style="color: #DD0000">"ty" </span><span style="color: #007700">=> </span><span style="color: #0000BB">30</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//The identiy affine matrix<br /> </span><span style="color: #0000BB">$affineIdentity </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"sx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"sy" </span><span style="color: #007700">=> </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">"rx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ry" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"tx" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">"ty" </span><span style="color: #007700">=> </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$examples </span><span style="color: #007700">= [</span><span style="color: #0000BB">$affineScale</span><span style="color: #007700">, </span><span style="color: #0000BB">$affineShear</span><span style="color: #007700">, </span><span style="color: #0000BB">$affineRotate</span><span style="color: #007700">, </span><span style="color: #0000BB">$affineTranslate</span><span style="color: #007700">, </span><span style="color: #0000BB">$affineIdentity</span><span style="color: #007700">,];<br /><br /> </span><span style="color: #0000BB">$count </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">;<br /><br /> foreach (</span><span style="color: #0000BB">$examples </span><span style="color: #007700">as </span><span style="color: #0000BB">$example</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">push</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">translate</span><span style="color: #007700">((</span><span style="color: #0000BB">$count </span><span style="color: #007700">% </span><span style="color: #0000BB">2</span><span style="color: #007700">) * </span><span style="color: #0000BB">250</span><span style="color: #007700">, </span><span style="color: #0000BB">intval</span><span style="color: #007700">(</span><span style="color: #0000BB">$count </span><span style="color: #007700">/ </span><span style="color: #0000BB">2</span><span style="color: #007700">) * </span><span style="color: #0000BB">250</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">translate</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">affine</span><span style="color: #007700">(</span><span style="color: #0000BB">$example</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">rectangle</span><span style="color: #007700">(-</span><span style="color: #0000BB">50</span><span style="color: #007700">, -</span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">, </span><span style="color: #0000BB">50</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$draw</span><span style="color: #007700">-></span><span style="color: #0000BB">pop</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$count</span><span style="color: #007700">++;<br /> }<br /><br /> </span><span style="color: #FF8000">//Create an image object which the draw commands can be rendered into<br /> </span><span style="color: #0000BB">$image </span><span style="color: #007700">= new \</span><span style="color: #0000BB">Imagick</span><span style="color: #007700">();<br /> </span><span style="color: #0000BB">$image</span><span style="color: #007700">-></span><span style="color: #0000BB">newImage</span><span style="color: #007700">(</span><span style="color: #0000BB">500</span><span style="color: #007700">, </span><span style="color: #0000BB">750</span><span style="color: #007700">, </span><span style="color: #0000BB">$backgroundColor</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$image</span><span style="color: #007700">-></span><span style="color: #0000BB">setImageFormat</span><span style="color: #007700">(</span><span style="color: #DD0000">"png"</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//Render the draw commands in the ImagickDraw object <br /> //into the image.<br /> </span><span style="color: #0000BB">$image</span><span style="color: #007700">-></span><span style="color: #0000BB">drawImage</span><span style="color: #007700">(</span><span style="color: #0000BB">$draw</span><span style="color: #007700">);<br /><br /> </span><span style="color: #FF8000">//Send the image to the browser<br /> </span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"Content-Type: image/png"</span><span style="color: #007700">);<br /> echo </span><span style="color: #0000BB">$image</span><span style="color: #007700">-></span><span style="color: #0000BB">getImageBlob</span><span style="color: #007700">();<br />}<br /><br /></span><span style="color: #0000BB">?></span>
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