Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / ImageMagick / 8ee7f2497312da6d76cc514903ec69dbb63d32ea / . / www / api / paint.html
blob: ab7ff6c805095af9dee58ddd0373ea6ac4c1e188 [file] [log] [blame]
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3<html version="-//W3C//DTD XHTML 1.1//EN"
4 xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
6 xsi:schemaLocation="http://www.w3.org/1999/xhtml
7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
8<head>
9 <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]10 <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4"/>
cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]11 <title>ImageMagick: MagickCore, C API for ImageMagick: Paint on an Image</title>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]12 <meta http-equiv="content-language" content="en-US"/>
13 <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
14 <meta http-equiv="reply-to" content="magick-users@imagemagick.org"/>
15 <meta name="application-name" content="ImageMagick"/>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]16 <meta name="description" content="Use ImageMagick to convert, edit, or compose bitmap images in a variety of formats. In addition, resize, rotate, shear, distort or transform images automagically."/>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]17 <meta name="application-url" content="http://www.imagemagick.org"/>
18 <meta name="generator" content="PHP"/>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]19 <meta name="keywords" content="magickcore, c, api, for, imagemagick:, paint, on, an, image, ImageMagick, PerlMagick, image processing, OpenMP, software development library, image, photo, software, Magick++, MagickWand"/>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]20 <meta name="rating" content="GENERAL"/>
21 <meta name="robots" content="INDEX, FOLLOW"/>
22 <meta name="generator" content="ImageMagick Studio LLC"/>
23 <meta name="author" content="ImageMagick Studio LLC"/>
24 <meta name="revisit-after" content="2 DAYS"/>
25 <meta name="resource-type" content="document"/>
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]26 <meta name="copyright" content="Copyright (c) 1999-2012 ImageMagick Studio LLC"/>
cristy751980d2012-06-03 23:18:35 +0000[diff] [blame]27 <meta name="distribution" content="Global"/>
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]28 <link rel="icon" href="../../images/wand.png"/>
29 <link rel="shortcut icon" href="../../images/wand.ico" type="images/x-icon"/>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]30 <link rel="canonical" href="http://www.imagemagick.org" />
31 <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"/>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]32
33 <!-- Add jQuery library -->
34 <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.min.js"></script>
35
36 <!-- Add mousewheel plugin (this is optional) -->
37 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/lib/jquery.mousewheel-3.0.6.pack.js"></script>
38
39 <!-- Add fancyBox -->
40 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/jquery.fancybox.css?v=2.0.6" type="text/css" media="screen" />
41 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/jquery.fancybox.pack.js?v=2.0.6"></script>
42
43 <!-- Optionally add helpers - button, thumbnail and/or media -->
44 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-buttons.css?v=1.0.2" type="text/css" media="screen" />
45 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-buttons.js?v=1.0.2"></script>
46 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-media.js?v=1.0.0"></script>
47
48 <link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-thumbs.css?v=2.0.6" type="text/css" media="screen" />
49 <script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-thumbs.js?v=2.0.6"></script>
50
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]51 <script type="text/javascript">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]52 $(document).ready(function() {
53 $(".fancybox").fancybox();
54 });
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]55 </script>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]56
57 <!-- ImageMagick style -->
58 <style type="text/css" media="all">
59 @import url("../../www/magick.css");
60 </style>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]61</head>
62
63<body id="www-imagemagick-org">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]64
65<script>
66 (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
67 (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
68 m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
69 })(window,document,'offline-script','//127.0.0.1/analytics.js','ga');
70
71 ga('create', 'UA-40133312-1', 'imagemagick.org');
72 ga('send', 'pageview');
73</script>
74
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]75<div class="titlebar">
76<div style="margin: 17px auto; float: left;">
77 <script type="text/javascript">
78 <!--
79 google_ad_client = "pub-3129977114552745";
80 google_ad_slot = "5439289906";
81 google_ad_width = 728;
82 google_ad_height = 90;
83 //-->
84 </script>
85 <script type="text/javascript"
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]86 src="http://127.0.0.1/pagead/show_ads.js">
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]87 </script>
88</div>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]89<a href="http://www.imagemagick.org/discourse-server/">
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]90 <img src="../../images/logo.jpg"
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]91 alt="ImageMagick Logo"
92 style="width: 123px; height: 118px; border: 0px; float: right;" /></a>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]93<a href="../../index.html">
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame]94 <img src="../../images/sprite.jpg"
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]95 alt="ImageMagick Sprite"
96 style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
97</div>
98
99<div class="westbar">
100
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]101<div class="menu">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]102 <a title="About ImageMagick" href="../../index.html">About ImageMagick</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]103</div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]104<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]105 <a title="Binary Releases" href="../../www/binary-releases.html">Binary Releases</a>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]106</div>
107<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]108 <a title="Binary Release: Unix" href="../../www/binary-releases.html#unix">Unix</a>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]109</div>
110<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]111 <a title="Binary Release: MacOS X" href="../../www/binary-releases.html#macosx">Mac OS X</a>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]112</div>
113<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]114 <a title="Binary Release: iOS" href="../../www/binary-releases.html#iOS">iOS</a>
cristyda16f162011-02-19 23:52:17 +0000[diff] [blame]115</div>
116<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]117 <a title="Binary Release: Windows" href="../../www/binary-releases.html#windows">Windows</a>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]118</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]119<div class="sep"></div>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]120<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]121 <a title="Command-line Tools" href="../../www/command-line-tools.html">Command-line Tools</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]122</div>
123<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]124 <a title="Command-line Tools: Processing" href="../../www/command-line-processing.html">Processing</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]125</div>
126<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]127 <a title="Command-line Tools: Options" href="../../www/command-line-options.html">Options</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]128</div>
129<div class="sub">
cristy83a272e2010-05-07 20:40:35 +0000[diff] [blame]130 <a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]131</div>
132<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]133 <a title="Program Interfaces" href="../../www/api.html">Program Interfaces</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]134</div>
135<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]136 <a title="Program Interface: MagickWand" href="../../www/magick-wand.html">MagickWand</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]137</div>
138<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]139 <a title="Program Interface: MagickCore" href="../../www/magick-core.html">MagickCore</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]140</div>
141<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]142 <a title="Program Interface: PerlMagick" href="../../www/perl-magick.html">PerlMagick</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]143</div>
144<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]145 <a title="Program Interface: Magick++" href="../../www/magick++.html">Magick++</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]146</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]147<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]148<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]149 <a title="Install from Source" href="../../www/install-source.html">Install from Source</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]150</div>
151<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]152 <a title="Install from Source: Unix" href="../../www/install-source.html#unix">Unix</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]153</div>
154<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]155 <a title="Install from Source: Windows" href="../../www/install-source.html#windows">Windows</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]156 </div>
157<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]158 <a title="Resources" href="../../www/resources.html">Resources</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]159</div>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]160<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]161 <a title="Architecture" href="../../www/architecture.html">Architecture</a>
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]162</div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]163<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]164 <a title="Download" href="../../www/download.html">Download</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]165</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]166<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]167<div class="menu">
cristy3dfa2192013-02-24 22:46:05 +0000[diff] [blame]168 <a title="Search" href="http://www.imagemagick.org/script/search.php">Search</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]169</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]170<div class="sep"></div>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]171<div class="menu">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]172 <a title="Site Map" href="../../www/sitemap.html">Site Map</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]173</div>
174<div class="sub">
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]175 <a title="Site Map: Links" href="../../www/links.html">Links</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]176</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]177<div class="sep"></div>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]178<div class="menu">
179 <a title="Support ImageMagick Development" href="../../www/support.html">Support ImageMagick Development</a>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]180</div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]181</div>
182
183<div class="eastbar">
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]184 <script type="text/javascript">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]185 /* <![CDATA[ */
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]186 (function() {
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]187 var po = document.createElement('offline-script'), t = document.getElementsByTagName('offline-script')[0];
188 po.type = 'text/javascript';
189 po.async = true;
190 po.src = 'http://api.flattr.com/js/0.6/load.js?mode=auto';
191 var script = document.getElementsByTagName('offline-script')[0];
192 script.parentNode.insertBefore(po, script);
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]193 })();
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]194 /* ]]> */
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]195 </script>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]196 <div> <a class="FlattrButton" style="display:none;" rev="flattr;button:compact;" href="http://www.imagemagick.org/"></a></div>
197 <noscript>
198 <a href="http://flattr.com/thing/947300/Convert-Edit-And-Compose-Images" target="_blank">
199 <img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" width="93" height="20" border="0" /></a>
200 </noscript>
201 <div class="g-plusone" id="gplusone"></div>
202 <script type="text/javascript">
203 /* <![CDATA[ */
204 window.___gcfg = {
205 lang: 'en-US'
206 };
207
208 (function() {
209 var po = document.createElement('offline-script');
210 po.type = 'text/javascript';
211 po.async = true;
212 po.src = 'https://127.0.0.1/js/plusone.js';
213 var script = document.getElementsByTagName('offline-script')[0];
214 script.parentNode.insertBefore(po, script);
215 })();
216 var gplusone = document.getElementById("gplusone");
217 gplusone.setAttribute("data-size","medium");
218 gplusone.setAttribute("data-count","true");
219 /* ]]> */
220 </script>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]221</div>
222
223<div class="main">
224
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]225<h1>Module paint Methods</h1>
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]226<p class="navigation-index">[<a href="paint.html#FloodfillPaintImage">FloodfillPaintImage</a> &bull; <a href="paint.html#OilPaintImage">OilPaintImage</a> &bull; <a href="paint.html#OpaquePaintImage">OpaquePaintImage</a> &bull; <a href="paint.html#TransparentPaintImage">TransparentPaintImage</a> &bull; <a href="paint.html#TransparentPaintImageChroma">TransparentPaintImageChroma</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]227
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]228<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="FloodfillPaintImage">FloodfillPaintImage</a></h2>
229<div class="doc-section">
230
231<p>FloodfillPaintImage() changes the color value of any pixel that matches target and is an immediate neighbor. If the method FillToBorderMethod is specified, the color value is changed for any neighbor pixel that does not match the bordercolor member of image.</p>
232
233<p>By default target must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. The fuzz member of image defines how much tolerance is acceptable to consider two colors as the same. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color for the purposes of the floodfill.</p>
234
235<p>The format of the FloodfillPaintImage method is:</p>
236
237<pre class="code">
238 MagickBooleanType FloodfillPaintImage(Image *image,
239 const ChannelType channel,const DrawInfo *draw_info,
240 const MagickPixelPacket target,const ssize_t x_offset,
241 const ssize_t y_offset,const MagickBooleanType invert)
242</pre>
243
244<p>A description of each parameter follows:</p>
245
246<h5>image</h5>
247<p>the image.</p>
248
249<h5>channel</h5>
250<p>the channel(s).</p>
251
252<h5>draw_info</h5>
253<p>the draw info.</p>
254
255<h5>target</h5>
256<p>the RGB value of the target color.</p>
257
258<h5>x_offset,y_offset</h5>
259<p>the starting location of the operation.</p>
260
261<h5>invert</h5>
262<p>paint any pixel that does not match the target color.</p>
263
264 </div>
265<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="OilPaintImage">OilPaintImage</a></h2>
266<div class="doc-section">
267
268<p>OilPaintImage() applies a special effect filter that simulates an oil painting. Each pixel is replaced by the most frequent color occurring in a circular region defined by radius.</p>
269
270<p>The format of the OilPaintImage method is:</p>
271
272<pre class="code">
273 Image *OilPaintImage(const Image *image,const double radius,
274 ExceptionInfo *exception)
275</pre>
276
277<p>A description of each parameter follows:</p>
278
279<h5>image</h5>
280<p>the image.</p>
281
282<h5>radius</h5>
283<p>the radius of the circular neighborhood.</p>
284
285<h5>exception</h5>
286<p>return any errors or warnings in this structure.</p>
287
288 </div>
289<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="OpaquePaintImage">OpaquePaintImage</a></h2>
290<div class="doc-section">
291
292<p>OpaquePaintImage() changes any pixel that matches color with the color defined by fill.</p>
293
294<p>By default color must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. Fuzz defines how much tolerance is acceptable to consider two colors as the same. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color.</p>
295
296<p>The format of the OpaquePaintImage method is:</p>
297
298<pre class="code">
299 MagickBooleanType OpaquePaintImage(Image *image,
300 const PixelPacket *target,const PixelPacket *fill,
301 const MagickBooleanType invert)
302 MagickBooleanType OpaquePaintImageChannel(Image *image,
303 const ChannelType channel,const PixelPacket *target,
304 const PixelPacket *fill,const MagickBooleanType invert)
305</pre>
306
307<p>A description of each parameter follows:</p>
308
309<h5>image</h5>
310<p>the image.</p>
311
312<h5>channel</h5>
313<p>the channel(s).</p>
314
315<h5>target</h5>
316<p>the RGB value of the target color.</p>
317
318<h5>fill</h5>
319<p>the replacement color.</p>
320
321<h5>invert</h5>
322<p>paint any pixel that does not match the target color.</p>
323
324 </div>
325<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="TransparentPaintImage">TransparentPaintImage</a></h2>
326<div class="doc-section">
327
328<p>TransparentPaintImage() changes the opacity value associated with any pixel that matches color to the value defined by opacity.</p>
329
330<p>By default color must match a particular pixel color exactly. However, in many cases two colors may differ by a small amount. Fuzz defines how much tolerance is acceptable to consider two colors as the same. For example, set fuzz to 10 and the color red at intensities of 100 and 102 respectively are now interpreted as the same color.</p>
331
332<p>The format of the TransparentPaintImage method is:</p>
333
334<pre class="code">
335 MagickBooleanType TransparentPaintImage(Image *image,
336 const MagickPixelPacket *target,const Quantum opacity,
337 const MagickBooleanType invert)
338</pre>
339
340<p>A description of each parameter follows:</p>
341
342<h5>image</h5>
343<p>the image.</p>
344
345<h5>target</h5>
346<p>the target color.</p>
347
348<h5>opacity</h5>
349<p>the replacement opacity value.</p>
350
351<h5>invert</h5>
352<p>paint any pixel that does not match the target color.</p>
353
354 </div>
355<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="TransparentPaintImageChroma">TransparentPaintImageChroma</a></h2>
356<div class="doc-section">
357
358<p>TransparentPaintImageChroma() changes the opacity value associated with any pixel that matches color to the value defined by opacity.</p>
359
360<p>As there is one fuzz value for the all the channels, the TransparentPaintImage() API is not suitable for the operations like chroma, where the tolerance for similarity of two color component (RGB) can be different, Thus we define this method take two target pixels (one low and one hight) and all the pixels of an image which are lying between these two pixels are made transparent.</p>
361
362<p>The format of the TransparentPaintImage method is:</p>
363
364<pre class="code">
365 MagickBooleanType TransparentPaintImage(Image *image,
366 const MagickPixelPacket *low,const MagickPixelPacket *hight,
367 const Quantum opacity,const MagickBooleanType invert)
368</pre>
369
370<p>A description of each parameter follows:</p>
371
372<h5>image</h5>
373<p>the image.</p>
374
375<h5>low</h5>
376<p>the low target color.</p>
377
378<h5>high</h5>
379<p>the high target color.</p>
380
381<h5>opacity</h5>
382<p>the replacement opacity value.</p>
383
384<h5>invert</h5>
385<p>paint any pixel that does not match the target color.</p>
386
387 </div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]388
389</div>
390
391<div id="linkbar">
392 <span id="linkbar-west">&nbsp;</span>
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]393
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]394 <span id="linkbar-center">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]395 <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> &bull;
396 <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a> &bull;
397 <a href="http://jqmagick.imagemagick.org/">JqMagick</a>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]398 </span>
399 <span id="linkbar-east">&nbsp;</span>
400 </div>
401 <div class="footer">
cristy8ee7f242013-06-20 16:08:44 +0000[diff] [blame^]402 <span id="footer-west">&copy; 1999-2013 ImageMagick Studio LLC</span>
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]403 <span id="footer-east"> <a href="../../www/contact.html">Contact the Wizards</a></span>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]404 </div>
405 <div style="clear: both; margin: 0; width: 100%; "></div>
cristy06f63f22012-10-31 00:50:07 +0000[diff] [blame]406</body>
407</html>