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cristydcca3fa2010-12-29 21:50:07 +0000[diff] [blame]1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
cristy2bd2a982011-02-15 00:52:58 +0000[diff] [blame]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"
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7 http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]8<head>
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cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]11 <title>ImageMagick: MagickCore, C API for ImageMagick: Paint on an Image</title>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]12 <meta http-equiv="Content-Language" content="en-US"/>
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cristye6e84152011-06-06 14:16:49 +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 and transform images automagically."/>
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cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]32 <link rel="stylesheet" href="http://www.google.com/cse/style/look/default.css" type="text/css" />
cristy1efc1ab2011-08-01 14:47:02 +0000[diff] [blame]33 <link rel="stylesheet" type="text/css" href="http://www.imagemagick.org/fancybox/jquery.fancybox-1.3.4.css" media="screen" />
cristy3c98a4f2010-08-13 20:09:41 +0000[diff] [blame]34 <style type="text/css" media="all">
35 @import url("../../www/magick.css");
36 </style>
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cristy361f4662010-12-31 23:02:52 +0000[diff] [blame]40 <script type="text/javascript">
41 $(document).ready(function() {
42 $("a[href$=.jpg],a[href$=.png],a[href$=.gif]").fancybox({
43 'transitionIn' : 'elastic',
44 'transitionOut' : 'elastic',
45 'overlayShow' : false,
46 'opacity' : true
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49 </script>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]50</head>
51
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216<div class="main">
217
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]218<h1>Module paint Methods</h1>
219<p class="navigation-index">[<a href="#FloodfillPaintImage">FloodfillPaintImage</a> &bull; <a href="#OilPaintImage">OilPaintImage</a> &bull; <a href="#OpaquePaintImage">OpaquePaintImage</a> &bull; <a href="#TransparentPaintImage">TransparentPaintImage</a> &bull; <a href="#TransparentPaintImageChroma">TransparentPaintImageChroma</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]220
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]221<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="FloodfillPaintImage">FloodfillPaintImage</a></h2>
222<div class="doc-section">
223
224<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>
225
226<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>
227
228<p>The format of the FloodfillPaintImage method is:</p>
229
230<pre class="code">
231 MagickBooleanType FloodfillPaintImage(Image *image,
232 const ChannelType channel,const DrawInfo *draw_info,
233 const MagickPixelPacket target,const ssize_t x_offset,
234 const ssize_t y_offset,const MagickBooleanType invert)
235</pre>
236
237<p>A description of each parameter follows:</p>
238
239<h5>image</h5>
240<p>the image.</p>
241
242<h5>channel</h5>
243<p>the channel(s).</p>
244
245<h5>draw_info</h5>
246<p>the draw info.</p>
247
248<h5>target</h5>
249<p>the RGB value of the target color.</p>
250
251<h5>x_offset,y_offset</h5>
252<p>the starting location of the operation.</p>
253
254<h5>invert</h5>
255<p>paint any pixel that does not match the target color.</p>
256
257 </div>
258<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="OilPaintImage">OilPaintImage</a></h2>
259<div class="doc-section">
260
261<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>
262
263<p>The format of the OilPaintImage method is:</p>
264
265<pre class="code">
266 Image *OilPaintImage(const Image *image,const double radius,
267 ExceptionInfo *exception)
268</pre>
269
270<p>A description of each parameter follows:</p>
271
272<h5>image</h5>
273<p>the image.</p>
274
275<h5>radius</h5>
276<p>the radius of the circular neighborhood.</p>
277
278<h5>exception</h5>
279<p>return any errors or warnings in this structure.</p>
280
281 </div>
282<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="OpaquePaintImage">OpaquePaintImage</a></h2>
283<div class="doc-section">
284
285<p>OpaquePaintImage() changes any pixel that matches color with the color defined by fill.</p>
286
287<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>
288
289<p>The format of the OpaquePaintImage method is:</p>
290
291<pre class="code">
292 MagickBooleanType OpaquePaintImage(Image *image,
293 const PixelPacket *target,const PixelPacket *fill,
294 const MagickBooleanType invert)
295 MagickBooleanType OpaquePaintImageChannel(Image *image,
296 const ChannelType channel,const PixelPacket *target,
297 const PixelPacket *fill,const MagickBooleanType invert)
298</pre>
299
300<p>A description of each parameter follows:</p>
301
302<h5>image</h5>
303<p>the image.</p>
304
305<h5>channel</h5>
306<p>the channel(s).</p>
307
308<h5>target</h5>
309<p>the RGB value of the target color.</p>
310
311<h5>fill</h5>
312<p>the replacement color.</p>
313
314<h5>invert</h5>
315<p>paint any pixel that does not match the target color.</p>
316
317 </div>
318<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="TransparentPaintImage">TransparentPaintImage</a></h2>
319<div class="doc-section">
320
321<p>TransparentPaintImage() changes the opacity value associated with any pixel that matches color to the value defined by opacity.</p>
322
323<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>
324
325<p>The format of the TransparentPaintImage method is:</p>
326
327<pre class="code">
328 MagickBooleanType TransparentPaintImage(Image *image,
329 const MagickPixelPacket *target,const Quantum opacity,
330 const MagickBooleanType invert)
331</pre>
332
333<p>A description of each parameter follows:</p>
334
335<h5>image</h5>
336<p>the image.</p>
337
338<h5>target</h5>
339<p>the target color.</p>
340
341<h5>opacity</h5>
342<p>the replacement opacity value.</p>
343
344<h5>invert</h5>
345<p>paint any pixel that does not match the target color.</p>
346
347 </div>
348<h2><a href="http://www.imagemagick.org/api/MagickCore/paint_8c.html" id="TransparentPaintImageChroma">TransparentPaintImageChroma</a></h2>
349<div class="doc-section">
350
351<p>TransparentPaintImageChroma() changes the opacity value associated with any pixel that matches color to the value defined by opacity.</p>
352
353<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>
354
355<p>The format of the TransparentPaintImage method is:</p>
356
357<pre class="code">
358 MagickBooleanType TransparentPaintImage(Image *image,
359 const MagickPixelPacket *low,const MagickPixelPacket *hight,
360 const Quantum opacity,const MagickBooleanType invert)
361</pre>
362
363<p>A description of each parameter follows:</p>
364
365<h5>image</h5>
366<p>the image.</p>
367
368<h5>low</h5>
369<p>the low target color.</p>
370
371<h5>high</h5>
372<p>the high target color.</p>
373
374<h5>opacity</h5>
375<p>the replacement opacity value.</p>
376
377<h5>invert</h5>
378<p>paint any pixel that does not match the target color.</p>
379
380 </div>
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