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<h1 class="refname">Gmagick::modulateimage</h1>
<p class="verinfo">(PECL gmagick >= Unknown)</p><p class="refpurpose"><span class="refname">Gmagick::modulateimage</span> — <span class="dc-title">Control the brightness, saturation, and hue</span></p>
</div>
<div class="refsect1 description" id="refsect1-gmagick.modulateimage-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span> <span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>Gmagick::modulateimage</strong></span>
( <span class="methodparam"><span class="type">float</span> <code class="parameter">$brightness</code></span>
, <span class="methodparam"><span class="type">float</span> <code class="parameter">$saturation</code></span>
, <span class="methodparam"><span class="type">float</span> <code class="parameter">$hue</code></span>
)</div>
<p class="para rdfs-comment">
Lets you control the brightness, saturation, and hue of an image. Hue is the
percentage of absolute rotation from the current position. For example 50 results
in a counter-clockwise rotation of 90 degrees, 150 results in a clockwise rotation
of 90 degrees, with 0 and 200 both resulting in a rotation of 180 degrees.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-gmagick.modulateimage-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">brightness</code></em></span>
<dd>
<p class="para">
The percent change in brighness (-100 thru +100).
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">saturation</code></em></span>
<dd>
<p class="para">
The percent change in saturation (-100 thru +100)
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">hue</code></em></span>
<dd>
<p class="para">
The percent change in hue (-100 thru +100)
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-gmagick.modulateimage-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The Gmagick object on success
</p>
</div>
<div class="refsect1 errors" id="refsect1-gmagick.modulateimage-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Throws an
<strong class="classname">GmagickException</strong> on error.
</p>
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