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176
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]177<h1>Module colormap Methods</h1>
cristy44cbd482013-08-04 20:53:36 +0000[diff] [blame^]178<p class="navigation-index">[<a href="colormap.html#AcquireImageColormap">AcquireImageColormap</a> • <a href="colormap.html#CycleColormap">CycleColormap</a>]</p>
cristyf1196bb2010-02-13 21:18:03 +0000[diff] [blame]179
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]180<h2><a href="http://www.imagemagick.org/api/MagickCore/colormap_8c.html" id="AcquireImageColormap">AcquireImageColormap</a></h2>
181<div class="doc-section">
182
183<p>AcquireImageColormap() allocates an image colormap and initializes it to a linear gray colorspace. If the image already has a colormap, it is replaced. AcquireImageColormap() returns MagickTrue if successful, otherwise MagickFalse if there is not enough memory.</p>
184
185<p>The format of the AcquireImageColormap method is:</p>
186
187<pre class="code">
188 MagickBooleanType AcquireImageColormap(Image *image,
189 const size_t colors)
190</pre>
191
192<p>A description of each parameter follows:</p>
193
194<h5>image</h5>
195<p>the image.</p>
196
197<h5>colors</h5>
198<p>the number of colors in the image colormap.</p>
199
200 </div>
201<h2><a href="http://www.imagemagick.org/api/MagickCore/colormap_8c.html" id="CycleColormap">CycleColormap</a></h2>
202<div class="doc-section">
203
204<p>CycleColormap() displaces an image's colormap by a given number of positions. If you cycle the colormap a number of times you can produce a psychodelic effect.</p>
205
206<p>The format of the CycleColormapImage method is:</p>
207
208<pre class="code">
209 MagickBooleanType CycleColormapImage(Image *image,const ssize_t displace)
210</pre>
211
212<p>A description of each parameter follows:</p>
213
214<h5>image</h5>
215<p>the image.</p>
216
217<h5>displace</h5>
218<p>displace the colormap this amount.</p>
219
220 </div>
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