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cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]178<h1>Module fx
179 Methods</h1>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]180<p class="navigation-index">[<a href="#AddNoiseImage">AddNoiseImage</a> &bull; <a href="#BlueShiftImage">BlueShiftImage</a> &bull; <a href="#CharcoalImage">CharcoalImage</a> &bull; <a href="#ColorizeImage">ColorizeImage</a> &bull; <a href="#ColorMatrixImage">ColorMatrixImage</a> &bull; <a href="#FxImage">FxImage</a> &bull; <a href="#ImplodeImage">ImplodeImage</a> &bull; <a href="#The MorphImages">The MorphImages</a> &bull; <a href="#PlasmaImage">PlasmaImage</a> &bull; <a href="#PolaroidImage">PolaroidImage</a> &bull; <a href="#MagickSepiaToneImage">MagickSepiaToneImage</a> &bull; <a href="#ShadowImage">ShadowImage</a> &bull; <a href="#SketchImage">SketchImage</a> &bull; <a href="#SolarizeImage">SolarizeImage</a> &bull; <a href="#SteganoImage">SteganoImage</a> &bull; <a href="#StereoAnaglyphImage">StereoAnaglyphImage</a> &bull; <a href="#SwirlImage">SwirlImage</a> &bull; <a href="#TintImage">TintImage</a> &bull; <a href="#VignetteImage">VignetteImage</a> &bull; <a href="#WaveImage">WaveImage</a>]</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]181
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]182<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
183_8c.html" id="AddNoiseImage">AddNoiseImage</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>AddNoiseImage() adds random noise to the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]187
188<p>The format of the AddNoiseImage method is:</p>
189
190<pre class="code">
191 Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
192 ExceptionInfo *exception)
193 Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
194 const NoiseType noise_type,ExceptionInfo *exception)
195</pre>
196
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]197<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]198
199<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]200<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]201
202<h5>channel</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]203<p>the channel type.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]204
205<h5>noise_type</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]206<p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]207
208<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]209<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]210
211 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]212<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
213_8c.html" id="BlueShiftImage">BlueShiftImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]214<div class="doc-section">
215
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]216<p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]217
218<p>The format of the BlueShiftImage method is:</p>
219
220<pre class="code">
221 Image *BlueShiftImage(const Image *image,const double factor,
222 ExceptionInfo *exception)
223</pre>
224
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]225<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]226
227<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]228<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]229
230<h5>factor</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]231<p>the shift factor.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]232
233<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]234<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]235
236 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]237<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
238_8c.html" id="CharcoalImage">CharcoalImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]239<div class="doc-section">
240
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]241<p>CharcoalImage() creates a new image that is a copy of an existing one with the edge highlighted. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]242
243<p>The format of the CharcoalImage method is:</p>
244
245<pre class="code">
246 Image *CharcoalImage(const Image *image,const double radius,
247 const double sigma,ExceptionInfo *exception)
248</pre>
249
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]250<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]251
252<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]253<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]254
255<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]256<p>the radius of the pixel neighborhood.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]257
258<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]259<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]260
261<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]262<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]263
264 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]265<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
266_8c.html" id="ColorizeImage">ColorizeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]267<div class="doc-section">
268
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]269<p>ColorizeImage() blends the fill color with each pixel in the image. A percentage blend is specified with opacity. Control the application of different color components by specifying a different percentage for each component (e.g. 90/100/10 is 90 red, 100 green, and 10 blue).</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]270
271<p>The format of the ColorizeImage method is:</p>
272
273<pre class="code">
274 Image *ColorizeImage(const Image *image,const char *opacity,
275 const PixelPacket colorize,ExceptionInfo *exception)
276</pre>
277
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]278<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]279
280<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]281<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]282
283<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]284<p>A character string indicating the level of opacity as a percentage.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]285
286<h5>colorize</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]287<p>A color value.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]288
289<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]290<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]291
292 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]293<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
294_8c.html" id="ColorMatrixImage">ColorMatrixImage</a></h2>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]295<div class="doc-section">
296
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]297<p>ColorMatrixImage() applies color transformation to an image. This method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255).</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]298
299<p>The format of the ColorMatrixImage method is:</p>
300
301<pre class="code">
302 Image *ColorMatrixImage(const Image *image,
303 const KernelInfo *color_matrix,ExceptionInfo *exception)
304</pre>
305
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]306<p>A description of each parameter follows:</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]307
308<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]309<p>the image.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]310
311<h5>color_matrix</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]312<p>the color matrix.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]313
314<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]315<p>return any errors or warnings in this structure.</p>
cristy0291e2d2010-04-04 17:50:18 +0000[diff] [blame]316
317 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]318<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
319_8c.html" id="FxImage">FxImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]320<div class="doc-section">
321
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]322<p>FxImage() applies a mathematical expression to the specified image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]323
324<p>The format of the FxImage method is:</p>
325
326<pre class="code">
327 Image *FxImage(const Image *image,const char *expression,
328 ExceptionInfo *exception)
329 Image *FxImageChannel(const Image *image,const ChannelType channel,
330 const char *expression,ExceptionInfo *exception)
331</pre>
332
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]333<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]334
335<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]336<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]337
338<h5>channel</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]339<p>the channel.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]340
341<h5>expression</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]342<p>A mathematical expression.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]343
344<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]345<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]346
347 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]348<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
349_8c.html" id="ImplodeImage">ImplodeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]350<div class="doc-section">
351
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]352<p>ImplodeImage() creates a new image that is a copy of an existing one with the image pixels "implode" by the specified percentage. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]353
354<p>The format of the ImplodeImage method is:</p>
355
356<pre class="code">
357 Image *ImplodeImage(const Image *image,const double amount,
358 ExceptionInfo *exception)
359</pre>
360
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]361<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]362
363<h5>implode_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]364<p>Method ImplodeImage returns a pointer to the image after it is implode. A null image is returned if there is a memory shortage.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]365
366<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]367<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]368
369<h5>amount</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]370<p>Define the extent of the implosion.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]371
372<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]373<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]374
375 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]376<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
377_8c.html" id="The_MorphImages">The MorphImages</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]378<div class="doc-section">
379
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]380<p>The MorphImages() method requires a minimum of two images. The first image is transformed into the second by a number of intervening images as specified by frames.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]381
382<p>The format of the MorphImage method is:</p>
383
384<pre class="code">
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]385 Image *MorphImages(const Image *image,const size_t number_frames,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]386 ExceptionInfo *exception)
387</pre>
388
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]389<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]390
391<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]392<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]393
394<h5>number_frames</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]395<p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]396
397<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]398<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]399
400 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]401<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
402_8c.html" id="PlasmaImage">PlasmaImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]403<div class="doc-section">
404
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]405<p>PlasmaImage() initializes an image with plasma fractal values. The image must be initialized with a base color and the random number generator seeded before this method is called.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]406
407<p>The format of the PlasmaImage method is:</p>
408
409<pre class="code">
410 MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]411 size_t attenuate,size_t depth)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]412</pre>
413
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]414<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]415
416<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]417<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]418
419<h5>segment</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]420<p> Define the region to apply plasma fractals values.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]421
422<h5>attenuate</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]423<p>Define the plasma attenuation factor.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]424
425<h5>depth</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]426<p>Limit the plasma recursion depth.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]427
428 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]429<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
430_8c.html" id="PolaroidImage">PolaroidImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]431<div class="doc-section">
432
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]433<p>PolaroidImage() simulates a Polaroid picture.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]434
435<p>The format of the AnnotateImage method is:</p>
436
437<pre class="code">
438 Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
439 const double angle,ExceptionInfo exception)
440</pre>
441
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]442<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]443
444<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]445<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]446
447<h5>draw_info</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]448<p>the draw info.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]449
450<h5>angle</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]451<p>Apply the effect along this angle.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]452
453<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]454<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]455
456 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]457<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
458_8c.html" id="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]459<div class="doc-section">
460
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]461<p>MagickSepiaToneImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]462
463<p>The format of the SepiaToneImage method is:</p>
464
465<pre class="code">
466 Image *SepiaToneImage(const Image *image,const double threshold,
467 ExceptionInfo *exception)
468</pre>
469
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]470<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]471
472<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]473<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]474
475<h5>threshold</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]476<p>the tone threshold.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]477
478<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]479<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]480
481 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]482<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
483_8c.html" id="ShadowImage">ShadowImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]484<div class="doc-section">
485
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]486<p>ShadowImage() simulates a shadow from the specified image and returns it.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]487
488<p>The format of the ShadowImage method is:</p>
489
490<pre class="code">
491 Image *ShadowImage(const Image *image,const double opacity,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]492 const double sigma,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]493 ExceptionInfo *exception)
494</pre>
495
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]496<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]497
498<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]499<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]500
501<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]502<p>percentage transparency.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]503
504<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]505<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]506
507<h5>x_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]508<p>the shadow x-offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]509
510<h5>y_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]511<p>the shadow y-offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]512
513<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]514<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]515
516 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]517<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
518_8c.html" id="SketchImage">SketchImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]519<div class="doc-section">
520
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]521<p>SketchImage() simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SketchImage() selects a suitable radius for you. Angle gives the angle of the sketch.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]522
523<p>The format of the SketchImage method is:</p>
524
525<pre class="code">
526 Image *SketchImage(const Image *image,const double radius,
527 const double sigma,const double angle,ExceptionInfo *exception)
528</pre>
529
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]530<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]531
532<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]533<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]534
535<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]536<p>the radius of the Gaussian, in pixels, not counting the center pixel.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]537
538<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]539<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]540
541<h5>angle</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]542<p>Apply the effect along this angle.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]543
544<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]545<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]546
547 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]548<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
549_8c.html" id="SolarizeImage">SolarizeImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]550<div class="doc-section">
551
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]552<p>SolarizeImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by selectively exposing areas of photo sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the solarization.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]553
554<p>The format of the SolarizeImage method is:</p>
555
556<pre class="code">
557 MagickBooleanType SolarizeImage(Image *image,const double threshold)
558</pre>
559
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]560<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]561
562<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]563<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]564
565<h5>threshold</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]566<p>Define the extent of the solarization.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]567
568 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]569<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
570_8c.html" id="SteganoImage">SteganoImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]571<div class="doc-section">
572
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]573<p>SteganoImage() hides a digital watermark within the image. Recover the hidden watermark later to prove that the authenticity of an image. Offset defines the start position within the image to hide the watermark.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]574
575<p>The format of the SteganoImage method is:</p>
576
577<pre class="code">
578 Image *SteganoImage(const Image *image,Image *watermark,
579 ExceptionInfo *exception)
580</pre>
581
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]582<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]583
584<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]585<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]586
587<h5>watermark</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]588<p>the watermark image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]589
590<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]591<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]592
593 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]594<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
595_8c.html" id="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]596<div class="doc-section">
597
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]598<p>StereoAnaglyphImage() combines two images and produces a single image that is the composite of a left and right image of a stereo pair. Special red-green stereo glasses are required to view this effect.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]599
600<p>The format of the StereoAnaglyphImage method is:</p>
601
602<pre class="code">
603 Image *StereoImage(const Image *left_image,const Image *right_image,
604 ExceptionInfo *exception)
605 Image *StereoAnaglyphImage(const Image *left_image,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]606 const Image *right_image,const ssize_t x_offset,const ssize_t y_offset,
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]607 ExceptionInfo *exception)
608</pre>
609
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]610<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]611
612<h5>left_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]613<p>the left image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]614
615<h5>right_image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]616<p>the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]617
618<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]619<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]620
621<h5>x_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]622<p>amount, in pixels, by which the left image is offset to the right of the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]623
624<h5>y_offset</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]625<p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]626
627
628 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]629<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
630_8c.html" id="SwirlImage">SwirlImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]631<div class="doc-section">
632
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]633<p>SwirlImage() swirls the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]634
635<p>The format of the SwirlImage method is:</p>
636
637<pre class="code">
638 Image *SwirlImage(const Image *image,double degrees,
639 ExceptionInfo *exception)
640</pre>
641
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]642<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]643
644<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]645<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]646
647<h5>degrees</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]648<p>Define the tightness of the swirling effect.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]649
650<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]651<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]652
653 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]654<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
655_8c.html" id="TintImage">TintImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]656<div class="doc-section">
657
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]658<p>TintImage() applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]659
660<p>The format of the TintImage method is:</p>
661
662<pre class="code">
663 Image *TintImage(const Image *image,const char *opacity,
664 const PixelPacket tint,ExceptionInfo *exception)
665</pre>
666
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]667<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]668
669<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]670<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]671
672<h5>opacity</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]673<p>A color value used for tinting.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]674
675<h5>tint</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]676<p>A color value used for tinting.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]677
678<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]679<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]680
681 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]682<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
683_8c.html" id="VignetteImage">VignetteImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]684<div class="doc-section">
685
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]686<p>VignetteImage() softens the edges of the image in vignette style.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]687
688<p>The format of the VignetteImage method is:</p>
689
690<pre class="code">
691 Image *VignetteImage(const Image *image,const double radius,
cristybb503372010-05-27 20:51:26 +0000[diff] [blame]692 const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception)
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]693</pre>
694
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]695<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]696
697<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]698<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]699
700<h5>radius</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]701<p>the radius of the pixel neighborhood.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]702
703<h5>sigma</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]704<p>the standard deviation of the Gaussian, in pixels.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]705
706<h5>x, y</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]707<p>Define the x and y ellipse offset.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]708
709<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]710<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]711
712 </div>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]713<h2><a href="http://www.wizards-toolkit.org/api/MagickCore/fx
714_8c.html" id="WaveImage">WaveImage</a></h2>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]715<div class="doc-section">
716
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]717<p>WaveImage() creates a "ripple" effect in the image by shifting the pixels vertically along a sine wave whose amplitude and wavelength is specified by the given parameters.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]718
719<p>The format of the WaveImage method is:</p>
720
721<pre class="code">
722 Image *WaveImage(const Image *image,const double amplitude,
723 const double wave_length,ExceptionInfo *exception)
724</pre>
725
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]726<p>A description of each parameter follows:</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]727
728<h5>image</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]729<p>the image.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]730
731<h5>amplitude, wave_length</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]732<p>Define the amplitude and wave length of the sine wave.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]733
734<h5>exception</h5>
cristy7a40ba82011-01-08 20:31:18 +0000[diff] [blame]735<p>return any errors or warnings in this structure.</p>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]736
737 </div>
cristy3eaa0ef2010-03-06 20:35:26 +0000[diff] [blame]738
739</div>
740
741<div id="linkbar">
cristyce69bb02010-07-27 19:49:46 +0000[diff] [blame]742 <span id="linkbar-west">&nbsp;</span>
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