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12 <title>ImageMagick: MagickCore, C API for ImageMagick: Draw on an Image</title>
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165<div class="main">
166
cristy3ed852e2009-09-05 21:47:34 +0000167<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>
168
169<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
170_8c.html" target="source" name="AcquireDrawInfo">AcquireDrawInfo</a></h2>
171<div class="doc-section">
172
173<p>AcquireDrawInfo() returns a DrawInfo structure properly initialized.</p></ol>
174
175<p>The format of the AcquireDrawInfo method is:</p>
176
177<pre class="code">
178 DrawInfo *AcquireDrawInfo(void)
179</pre>
180
181 </div>
182<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
183_8c.html" target="source" name="CloneDrawInfo">CloneDrawInfo</a></h2>
184<div class="doc-section">
185
186<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></ol>
187
188<p>The format of the CloneDrawInfo method is:</p>
189
190<pre class="code">
191 DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
192 const DrawInfo *draw_info)
193</pre>
194
195<p>A description of each parameter follows:</p></ol>
196
197<h5>image_info</h5>
198<ol><p>the image info.</p></ol>
199
200<h5>draw_info</h5>
201<ol><p>the draw info.</p></ol>
202
203 </div>
204<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
205_8c.html" target="source" name="DestroyDrawInfo">DestroyDrawInfo</a></h2>
206<div class="doc-section">
207
208<p>DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.</p></ol>
209
210<p>The format of the DestroyDrawInfo method is:</p>
211
212<pre class="code">
213 DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
214</pre>
215
216<p>A description of each parameter follows:</p></ol>
217
218<h5>draw_info</h5>
219<ol><p>the draw info.</p></ol>
220
221 </div>
222<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
223_8c.html" target="source" name="DrawAffineImage">DrawAffineImage</a></h2>
224<div class="doc-section">
225
226<p>DrawAffineImage() composites the source over the destination image as dictated by the affine transform.</p></ol>
227
228<p>The format of the DrawAffineImage method is:</p>
229
230<pre class="code">
231 MagickBooleanType DrawAffineImage(Image *image,const Image *source,
232 const AffineMatrix *affine)
233</pre>
234
235<p>A description of each parameter follows:</p></ol>
236
237<h5>image</h5>
238<ol><p>the image.</p></ol>
239
240<h5>source</h5>
241<ol><p>the source image.</p></ol>
242
243<h5>affine</h5>
244<ol><p>the affine transform.</p></ol>
245
246 </div>
247<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
248_8c.html" target="source" name="DrawClipPath">DrawClipPath</a></h2>
249<div class="doc-section">
250
251<p>DrawClipPath() draws the clip path on the image mask.</p></ol>
252
253<p>The format of the DrawClipPath method is:</p>
254
255<pre class="code">
256 MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
257 const char *name)
258</pre>
259
260<p>A description of each parameter follows:</p></ol>
261
262<h5>image</h5>
263<ol><p>the image.</p></ol>
264
265<h5>draw_info</h5>
266<ol><p>the draw info.</p></ol>
267
268<h5>name</h5>
269<ol><p>the name of the clip path.</p></ol>
270
271 </div>
272<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
273_8c.html" target="source" name="DrawImage">DrawImage</a></h2>
274<div class="doc-section">
275
276<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></ol>
277
278<p>The format of the DrawImage method is:</p>
279
280<pre class="code">
281 MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
282</pre>
283
284<p>A description of each parameter follows:</p></ol>
285
286<h5>image</h5>
287<ol><p>the image.</p></ol>
288
289<h5>draw_info</h5>
290<ol><p>the draw info.</p></ol>
291
292 </div>
293<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
294_8c.html" target="source" name="DrawGradientImage">DrawGradientImage</a></h2>
295<div class="doc-section">
296
297<p>DrawGradientImage() draws a linear gradient on the image.</p></ol>
298
299<p>The format of the DrawGradientImage method is:</p>
300
301<pre class="code">
302 MagickBooleanType DrawGradientImage(Image *image,
303 const DrawInfo *draw_info)
304</pre>
305
306<p>A description of each parameter follows:</p></ol>
307
308<h5>image</h5>
309<ol><p>the image.</p></ol>
310
311<h5>_info</h5>
312<ol><p>the draw info.</p></ol>
313
314 </div>
315<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
316_8c.html" target="source" name="DrawPatternPath">DrawPatternPath</a></h2>
317<div class="doc-section">
318
319<p>DrawPatternPath() draws a pattern.</p></ol>
320
321<p>The format of the DrawPatternPath method is:</p>
322
323<pre class="code">
324 MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
325 const char *name,Image **pattern)
326</pre>
327
328<p>A description of each parameter follows:</p></ol>
329
330<h5>image</h5>
331<ol><p>the image.</p></ol>
332
333<h5>draw_info</h5>
334<ol><p>the draw info.</p></ol>
335
336<h5>name</h5>
337<ol><p>the pattern name.</p></ol>
338
339<h5>image</h5>
340<ol><p>the image.</p></ol>
341
342 </div>
343<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
344_8c.html" target="source" name="DrawPrimitive">DrawPrimitive</a></h2>
345<div class="doc-section">
346
347<p>DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.</p></ol>
348
349<p>The format of the DrawPrimitive method is:</p>
350
351<pre class="code">
352 MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
353 PrimitiveInfo *primitive_info)
354</pre>
355
356<p>A description of each parameter follows:</p></ol>
357
358<h5>image</h5>
359<ol><p>the image.</p></ol>
360
361<h5>draw_info</h5>
362<ol><p>the draw info.</p></ol>
363
364<h5>primitive_info</h5>
365<ol><p>Specifies a pointer to a PrimitiveInfo structure.</p></ol>
366
367 </div>
368<h2><a href="http://www.imagemagick.org/api/MagickCore/draw
369_8c.html" target="source" name="GetAffineMatrix">GetAffineMatrix</a></h2>
370<div class="doc-section">
371
372<p>GetAffineMatrix() returns an AffineMatrix initialized to the identity matrix.</p></ol>
373
374<p>The format of the GetAffineMatrix method is:</p>
375
376<pre class="code">
377 void GetAffineMatrix(AffineMatrix *affine_matrix)
378</pre>
379
380<p>A description of each parameter follows:</p></ol>
381
382<h5>affine_matrix</h5>
383<ol><p>the affine matrix.</p></ol>
384
385 </div>
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