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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> 60 61 <p>The format of the AcquireImageColormap method is:</p> 62 63 <pre class="text"> 64 MagickBooleanType AcquireImageColormap(Image *image,const size_t colors, 65 ExceptionInfo *exception) 66 </pre> 67 68 <p>A description of each parameter follows:</p> 69 70 <dd> 71 </dd> 72 73 <dd> </dd> 74 <dl class="dl-horizontal"> 75 <dt>image</dt> 76 <dd>the image. </dd> 77 78 <dd> </dd> 79 <dt>colors</dt> 80 <dd>the number of colors in the image colormap. </dd> 81 82 <dd> </dd> 83 <dt>exception</dt> 84 <dd>return any errors or warnings in this structure. </dd> 85 86 <dd> </dd> 87 </dl> 88 <h2><a href="http://nextgen.imagemagick.org/api/MagickCore/colormap_8c.html" id="CycleColormap">CycleColormap</a></h2> 89 90 <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> 91 92 <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> 93 94 <p>The format of the CycleColormapImage method is:</p> 95 96 <pre class="text"> 97 MagickBooleanType CycleColormapImage(Image *image,const ssize_t displace, 98 ExceptionInfo *exception) 99 </pre> 100 101 <p>A description of each parameter follows:</p> 102 103 <dd> 104 </dd> 105 106 <dd> </dd> 107 <dl class="dl-horizontal"> 108 <dt>image</dt> 109 <dd>the image. </dd> 110 111 <dd> </dd> 112 <dt>displace</dt> 113 <dd> displace the colormap this amount. </dd> 114 115 <dd> </dd> 116 <dt>exception</dt> 117 <dd>return any errors or warnings in this structure. </dd> 118 119 <dd> </dd> 120 </dl> 121 </div> 122 <footer class="magick-footer"> 123 <p><a href="../script/support.php">Donate</a> 124 <a href="../script/sitemap.php">Sitemap</a> 125 <a href="../script/links.php">Related</a> 126 <a href="../script/architecture.php">Architecture</a> 127 </p> 128 <p><a href="colormap.php#">Back to top</a> 129 <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> 130 <a href="../script/contact.php">Contact Us</a></p> 131 <p><small> 1999-2016 ImageMagick Studio LLC</small></p> 132 </footer> 133 </div><!-- /.container --> 134 135 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 136 <script src="http://nextgen.imagemagick.org/js/magick.php"></script> 137 </div> 138 </body> 139 </html> 140
