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If the image already has a colormap, it is replaced. AcquireImageColormap() returns MagickTrue if successful, otherwise MagickFalse if there is not enough memory.</p> 95 96<p>The format of the AcquireImageColormap method is:</p> 97 98<pre class="text"> 99MagickBooleanType AcquireImageColormap(Image *image,const size_t colors, 100 ExceptionInfo *exception) 101</pre> 102 103<p>A description of each parameter follows:</p> 104 105<dd> 106</dd> 107 108<dd> </dd> 109<dl class="dl-horizontal"> 110<dt>image</dt> 111<dd>the image. </dd> 112 113<dd> </dd> 114<dt>colors</dt> 115<dd>the number of colors in the image colormap. </dd> 116 117<dd> </dd> 118<dt>exception</dt> 119<dd>return any errors or warnings in this structure. </dd> 120 121<dd> </dd> 122</dl> 123<h2><a href="../../api/MagickCore/colormap_8c.html" id="CycleColormap">CycleColormap</a></h2> 124 125<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> 126 127<p>WARNING: this assumes an images colormap is in a well know and defined order. Currently Imagemagick has no way of setting that order.</p> 128 129<p>The format of the CycleColormapImage method is:</p> 130 131<pre class="text"> 132MagickBooleanType CycleColormapImage(Image *image,const ssize_t displace, 133 ExceptionInfo *exception) 134</pre> 135 136<p>A description of each parameter follows:</p> 137 138<dd> 139</dd> 140 141<dd> </dd> 142<dl class="dl-horizontal"> 143<dt>image</dt> 144<dd>the image. </dd> 145 146<dd> </dd> 147<dt>displace</dt> 148<dd> displace the colormap this amount. </dd> 149 150<dd> </dd> 151<dt>exception</dt> 152<dd>return any errors or warnings in this structure. </dd> 153 154<dd> </dd> 155</dl> 156</div> 157 </div> 158 </main><!-- /.container --> 159 <footer class="magick-footer"> 160 <p><a href="../../www/security-policy.html">Security</a> • 161 <a href="../../www/architecture.html">Architecture</a> 162 163 <a href="colormap.html#"><img class="d-inline" id="wand" alt="And Now a Touch of Magick" width="16" height="16" src="../../images/wand.ico"/></a> 164 165 <a href="../../www/links.html">Related</a> • 166 <a href="../../www/sitemap.html">Sitemap</a> 167 <br/> 168 <a href="../../www/support.html">Donate</a> • 169 <a href="http://pgp.mit.edu/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • 170 <a href="../../www/contact.html">Contact Us</a> 171 <br/> 172 <small>© 1999-2020 ImageMagick Studio LLC</small></p> 173 </footer> 174 175 <!-- Javascript assets --> 176 <script src="../assets/magick.js" crossorigin="anonymous"></script> 177 <script>window.jQuery || document.write('<script src="https://localhost/ajax/libs/jquery/3.4.1/jquery.min.js"><\/script>')</script> 178</body> 179</html> 180<!-- Magick Cache 30th December 2019 09:22 -->
