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cristyffb69ed2010-12-25 00:06:48 +0000[diff] [blame]7 <title>ImageMagick: MagickCore, C API for ImageMagick: Draw on an Image</title>
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175
176<div class="main">
177
cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]178<h1>Module draw
179 Methods</h1>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]180<p class="navigation-index">[<a href="#AcquireDrawInfo">AcquireDrawInfo</a> &bull; <a href="#CloneDrawInfo">CloneDrawInfo</a> &bull; <a href="#DestroyDrawInfo">DestroyDrawInfo</a> &bull; <a href="#DrawAffineImage">DrawAffineImage</a> &bull; <a href="#DrawClipPath">DrawClipPath</a> &bull; <a href="#DrawImage">DrawImage</a> &bull; <a href="#DrawGradientImage">DrawGradientImage</a> &bull; <a href="#DrawPatternPath">DrawPatternPath</a> &bull; <a href="#DrawPrimitive">DrawPrimitive</a> &bull; <a href="#GetAffineMatrix">GetAffineMatrix</a>]</p>
181
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]182<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
183_8c.html" id="AcquireDrawInfo">AcquireDrawInfo</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]184<div class="doc-section">
185
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]186<p>AcquireDrawInfo() returns a DrawInfo structure properly initialized.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]187
188<p>The format of the AcquireDrawInfo method is:</p>
189
190<pre class="code">
191 DrawInfo *AcquireDrawInfo(void)
192</pre>
193
194 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]195<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
196_8c.html" id="CloneDrawInfo">CloneDrawInfo</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]197<div class="doc-section">
198
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]199<p>CloneDrawInfo() makes a copy of the given draw info structure. If NULL is specified, a new image info structure is created initialized to default values.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]200
201<p>The format of the CloneDrawInfo method is:</p>
202
203<pre class="code">
204 DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
205 const DrawInfo *draw_info)
206</pre>
207
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]208<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]209
210<h5>image_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]211<p>the image info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]212
213<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]214<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]215
216 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]217<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
218_8c.html" id="DestroyDrawInfo">DestroyDrawInfo</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]219<div class="doc-section">
220
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]221<p>DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]222
223<p>The format of the DestroyDrawInfo method is:</p>
224
225<pre class="code">
226 DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
227</pre>
228
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]229<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]230
231<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]232<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]233
234 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]235<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
236_8c.html" id="DrawAffineImage">DrawAffineImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]237<div class="doc-section">
238
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]239<p>DrawAffineImage() composites the source over the destination image as dictated by the affine transform.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]240
241<p>The format of the DrawAffineImage method is:</p>
242
243<pre class="code">
244 MagickBooleanType DrawAffineImage(Image *image,const Image *source,
245 const AffineMatrix *affine)
246</pre>
247
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]248<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]249
250<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]251<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]252
253<h5>source</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]254<p>the source image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]255
256<h5>affine</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]257<p>the affine transform.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]258
259 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]260<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
261_8c.html" id="DrawClipPath">DrawClipPath</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]262<div class="doc-section">
263
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]264<p>DrawClipPath() draws the clip path on the image mask.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]265
266<p>The format of the DrawClipPath method is:</p>
267
268<pre class="code">
269 MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
270 const char *name)
271</pre>
272
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]273<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]274
275<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]276<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]277
278<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]279<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]280
281<h5>name</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]282<p>the name of the clip path.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]283
284 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]285<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
286_8c.html" id="DrawImage">DrawImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]287<div class="doc-section">
288
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]289<p>DrawImage() draws a graphic primitive on your image. The primitive may be represented as a string or filename. Precede the filename with an "at" sign (@) and the contents of the file are drawn on the image. You can affect how text is drawn by setting one or more members of the draw info structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]290
291<p>The format of the DrawImage method is:</p>
292
293<pre class="code">
294 MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
295</pre>
296
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]297<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]298
299<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]300<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]301
302<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]303<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]304
305 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]306<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
307_8c.html" id="DrawGradientImage">DrawGradientImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]308<div class="doc-section">
309
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]310<p>DrawGradientImage() draws a linear gradient on the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]311
312<p>The format of the DrawGradientImage method is:</p>
313
314<pre class="code">
315 MagickBooleanType DrawGradientImage(Image *image,
316 const DrawInfo *draw_info)
317</pre>
318
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]319<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]320
321<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]322<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]323
324<h5>_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]325<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]326
327 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]328<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
329_8c.html" id="DrawPatternPath">DrawPatternPath</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]330<div class="doc-section">
331
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]332<p>DrawPatternPath() draws a pattern.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]333
334<p>The format of the DrawPatternPath method is:</p>
335
336<pre class="code">
337 MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
338 const char *name,Image **pattern)
339</pre>
340
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]341<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]342
343<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]344<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]345
346<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]347<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]348
349<h5>name</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]350<p>the pattern name.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]351
352<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]353<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]354
355 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]356<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
357_8c.html" id="DrawPrimitive">DrawPrimitive</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]358<div class="doc-section">
359
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]360<p>DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]361
362<p>The format of the DrawPrimitive method is:</p>
363
364<pre class="code">
365 MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
366 PrimitiveInfo *primitive_info)
367</pre>
368
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]369<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]370
371<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]372<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]373
374<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]375<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]376
377<h5>primitive_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]378<p>Specifies a pointer to a PrimitiveInfo structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]379
380 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]381<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/draw
382_8c.html" id="GetAffineMatrix">GetAffineMatrix</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]383<div class="doc-section">
384
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]385<p>GetAffineMatrix() returns an AffineMatrix initialized to the identity matrix.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]386
387<p>The format of the GetAffineMatrix method is:</p>
388
389<pre class="code">
390 void GetAffineMatrix(AffineMatrix *affine_matrix)
391</pre>
392
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]393<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]394
395<h5>affine_matrix</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame^]396<p>the affine matrix.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]397
398 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]399
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