File: fx.html

package info (click to toggle)
imagemagick 8%3A6.6.0.4-3%2Bsqueeze4
links: PTS, VCS
area: main
in suites: squeeze
size: 60,836 kB
ctags: 41,044
sloc: ansic: 273,304; cpp: 18,276; sh: 10,816; xml: 7,125; perl: 4,893; makefile: 2,346; tcl: 459; pascal: 125
file content (736 lines) | stat: -rw-r--r-- 26,207 bytes
parent folder | download | duplicates (2)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <meta http-equiv="Content-Type" value="application/xhtml+xml" />
  <meta name="verify-v1" content="g222frIIxcQTrvDR3NBRUSKP3AnMNoqxOkIniCEkV7U=" />
  <link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf" />
  <style type="text/css" media="screen,projection"><!--
    @import url("../../www/magick.css");
  --></style>
  <link rel="shortcut icon" href="../../images/wand.ico"  type="images/vnd.microsoft.icon"/>
  <title>ImageMagick: MagickCore, C API for ImageMagick: Add a Special Effect</title>
  <meta http-equiv="Content-Language" content="en-US"/>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  <meta http-equiv="Reply-to" content="magick-users@imagemagick.org"/>
  <meta name="Generator" content="PHP"/>
  <meta name="Keywords" content="magickcore, c, api, for, imagemagick:, add, a, special, effect, ImageMagick, ImageMagic, MagickCore, MagickWand, PerlMagick, Magick++, RMagick, PythonMagick, JMagick, TclMagick, Image, Magick, Magic, Wand, ImageMagickObject, Swiss, Army, Knife, Image, Processing"/>
  <meta name="Description" content="ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.  ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you can freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems.  The functionality of ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: MagickCore (C), MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick (Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP (PHP), PythonMagick (Python), RMagick (Ruby), or TclMagick (Tcl/TK). With a language interface, use ImageMagick to modify or create images automagically and dynamically."/>
  <meta name="Rating" content="GENERAL"/>
  <meta name="Robots" content="INDEX, FOLLOW"/>
  <meta name="Generator" content="ImageMagick Studio LLC"/>
  <meta name="Author" content="ImageMagick Studio LLC"/>
  <meta name="Revisit-after" content="2 DAYS"/>
  <meta name="Resource-type" content="document"/>
  <meta name="Copyright" content="Copyright (c) 1999-2010 ImageMagick Studio LLC"/>
  <meta name="Distribution" content="Global"/>
</head>

<body id="www-imagemagick-org">
<div class="titlebar">
<a href="../../index.html">
  <img src="../../images/script.png" alt="[ImageMagick]"
  style="width: 350px; height: 60px; margin: 28px auto; float: left;" /></a>
<a href="http://www.networkredux.com">
  <img src="../../images/networkredux.png" alt="[sponsor]"
  style="margin: 45px auto; border: 0px; float: left;" /></a>
<a href="http://www.imagemagick.org/discourse-server/">
  <img src="../../images/logo.jpg" alt=""
  style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
<a href="../../index.html">
  <img src="../../images/sprite.jpg" alt=""
  style="width: 114px; height: 118px; border: 0px; float: right;" /></a>
</div>

<div class="eastbar">

<div class="menu">
  <a href="../../index.html">About ImageMagick</a>
</div>
<div class="sep"></div>
<div class="menu">
  <a href="../../www/command-line-tools.html">Command-line Tools</a>
</div>
<div class="sub">
    <a href="../../www/command-line-processing.html">Processing</a>
</div>
<div class="sub">
    <a href="../../www/command-line-options.html">Options</a>
</div>
<div class="sub">
    <a href="http://www.imagemagick.org/Usage/">Usage</a>
</div>
<div class="menu">
  <a href="../../www/api.html">Program Interfaces</a>
</div>
<div class="sub">
    <a href="../../www/magick-wand.html">MagickWand</a>
</div>
<div class="sub">
    <a href="../../www/magick-core.html">MagickCore</a>
</div>
<div class="sub">
    <a href="../../www/perl-magick.html">PerlMagick</a>
</div>
<div class="sub">
    <a href="../../Magick++/">Magick++</a>
</div>
<div class="menu">
  <a href="../../www/architecture.html">Architecture</a>
</div>
<div class="sep"></div>
<div  class="menu">
   <a href="../../www/install-source.html">Install from Source</a>
</div>
<div class="sub">
    <a href="../../www/install-source.html#unix">Unix</a>
</div>
<div class="sub">
    <a href="../../www/install-source.html#windows">Windows</a>
 </div>
<div class="menu">
  <a href="../../www/binary-releases.html">Binary Releases</a>
</div>
<div class="sub">
    <a href="../../www/binary-releases.html#unix">Unix</a>
</div>
<div class="sub">
    <a href="../../www/binary-releases.html#macosx">Mac OS X</a>
</div>
<div class="sub">
    <a href="../../www/binary-releases.html#windows">Windows</a>
</div>
<div class="menu">
  <a href="../../www/resources.html">Resources</a>
</div>
<div class="sep"></div>
<div class="menu">
  <a href="../../www/download.html">Download</a>
</div>
<div class="sep"></div>
<div class="menu">
  <a href="../http://www.imagemagick.org/script/search.php">Search</a>
</div>
<div class="sep"></div>
<div class="menu">
  <a href="../../www/sitemap.html">Site Map</a>
</div>
<div  class="sub">
    <a href="../../www/links.html">Links</a>
</div>
<div class="sep"></div>
<div  class="menu">
  <a href="../../www/sponsors.html">Sponsors:</a>

<div class="sponsbox">
<div  class="sponsor">
   <a href="http://www.geschenke-elsen.de/" title="Lampe Berger">Lampe Berger</a><!-- 20106101000040 -->
</div>
<div  class="sponsor">
  <a href="http://www.deko.net">Deko.net</a><!-- 201101010600 Peterssen-->
</div>
<div  class="sponsor">
  <a href="http://www.tomsgutscheine.de">Tom's Gutscheine</a><!-- 201005010360 invendio.de-->
</div>
<div  class="sponsor">
  <a href="http://www.online-kredit-index.de">Kredit</a><!-- 201007010120 Buchhorn -->
</div>
<div  class="sponsor">
  <a href="http://www.blumenversender.com">Blumenversand</a><!-- 201005010120 -->
</div>
<div  class="sponsor">
  <a href="http://www.print24.de/">Druckerei</a><!-- 201009010720 -->
</div>
<div  class="sponsor">
   <a href="http://www.goyax.de">Börse</a><!-- 201004010240 Gewiese digital-finance.de -->
</div>
<div  class="sponsor">
   <a href="http://www.allesdruck.de">Druckerei Online</a><!-- 201012011200 allesdruck.de-->
</div>
</div>
</div>


</div>

<div class="main">

<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="#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="#RecolorImage">RecolorImage</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>

<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="AddNoiseImage">AddNoiseImage</a></h2>
<div class="doc-section">

<p>AddNoiseImage() adds random noise to the image.</p></ol>

<p>The format of the AddNoiseImage method is:</p>

<pre class="code">
  Image *AddNoiseImage(const Image *image,const NoiseType noise_type,
    ExceptionInfo *exception)
  Image *AddNoiseImageChannel(const Image *image,const ChannelType channel,
    const NoiseType noise_type,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>channel</h5>
<ol><p>the channel type.</p></ol>

<h5>noise_type</h5>
<ol><p>The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="BlueShiftImage">BlueShiftImage</a></h2>
<div class="doc-section">

<p>BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.</p></ol>

<p>The format of the BlueShiftImage method is:</p>

<pre class="code">
  Image *BlueShiftImage(const Image *image,const double factor,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>factor</h5>
<ol><p>the shift factor.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="CharcoalImage">CharcoalImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the CharcoalImage method is:</p>

<pre class="code">
  Image *CharcoalImage(const Image *image,const double radius,
    const double sigma,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>radius</h5>
<ol><p>the radius of the pixel neighborhood.</p></ol>

<h5>sigma</h5>
<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="ColorizeImage">ColorizeImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the ColorizeImage method is:</p>

<pre class="code">
  Image *ColorizeImage(const Image *image,const char *opacity,
    const PixelPacket colorize,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>opacity</h5>
<ol><p>A character string indicating the level of opacity as a percentage.</p></ol>

<h5>colorize</h5>
<ol><p>A color value.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="FxImage">FxImage</a></h2>
<div class="doc-section">

<p>FxImage() applies a mathematical expression to the specified image.</p></ol>

<p>The format of the FxImage method is:</p>

<pre class="code">
  Image *FxImage(const Image *image,const char *expression,
    ExceptionInfo *exception)
  Image *FxImageChannel(const Image *image,const ChannelType channel,
    const char *expression,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>channel</h5>
<ol><p>the channel.</p></ol>

<h5>expression</h5>
<ol><p>A mathematical expression.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="ImplodeImage">ImplodeImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the ImplodeImage method is:</p>

<pre class="code">
  Image *ImplodeImage(const Image *image,const double amount,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>implode_image</h5>
<ol><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></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>amount</h5>
<ol><p>Define the extent of the implosion.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="The MorphImages">The MorphImages</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the MorphImage method is:</p>

<pre class="code">
  Image *MorphImages(const Image *image,const unsigned long number_frames,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>number_frames</h5>
<ol><p>Define the number of in-between image to generate. The more in-between frames, the smoother the morph.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="PlasmaImage">PlasmaImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the PlasmaImage method is:</p>

<pre class="code">
  MagickBooleanType PlasmaImage(Image *image,const SegmentInfo *segment,
    unsigned long attenuate,unsigned long depth)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>segment</h5>
<ol><p> Define the region to apply plasma fractals values.</p></ol>

<h5>attenuate</h5>
<ol><p>Define the plasmattenuation factor.</p></ol>

<h5>depth</h5>
<ol><p>Limit the plasma recursion depth.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="PolaroidImage">PolaroidImage</a></h2>
<div class="doc-section">

<p>PolaroidImage() simulates a Polaroid picture.</p></ol>

<p>The format of the AnnotateImage method is:</p>

<pre class="code">
  Image *PolaroidImage(const Image *image,const DrawInfo *draw_info,
    const double angle,ExceptionInfo exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>draw_info</h5>
<ol><p>the draw info.</p></ol>

<h5>angle</h5>
<ol><p>Apply the effect along this angle.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="RecolorImage">RecolorImage</a></h2>
<div class="doc-section">

<p>RecolorImage() translate, scale, shear, or rotate image colors.  Although you can use variable sized matrices, typically you use a 5 x 5 for an RGBA image and a 6x6 for CMYKA.  Populate the last row with normalized values to translate.</p></ol>

<p>The format of the RecolorImage method is:</p>

<pre class="code">
  Image *RecolorImage(const Image *image,const unsigned long order,
    const double *color_matrix,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>order</h5>
<ol><p>the number of columns and rows in the recolor matrix.</p></ol>

<h5>color_matrix</h5>
<ol><p>An array of double representing the recolor matrix.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the SepiaToneImage method is:</p>

<pre class="code">
  Image *SepiaToneImage(const Image *image,const double threshold,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>threshold</h5>
<ol><p>the tone threshold.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="ShadowImage">ShadowImage</a></h2>
<div class="doc-section">

<p>ShadowImage() simulates a shadow from the specified image and returns it.</p></ol>

<p>The format of the ShadowImage method is:</p>

<pre class="code">
  Image *ShadowImage(const Image *image,const double opacity,
    const double sigma,const long x_offset,const long y_offset,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>opacity</h5>
<ol><p>percentage transparency.</p></ol>

<h5>sigma</h5>
<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>

<h5>x_offset</h5>
<ol><p>the shadow x-offset.</p></ol>

<h5>y_offset</h5>
<ol><p>the shadow y-offset.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="SketchImage">SketchImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the SketchImage method is:</p>

<pre class="code">
      Image *SketchImage(const Image *image,const double radius,
  const double sigma,const double angle,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>radius</h5>
<ol><p>the radius of the Gaussian, in pixels, not counting the center pixel.</p></ol>

<h5>sigma</h5>
<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>

<h5>angle</h5>
<ol><p>Apply the effect along this angle.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="SolarizeImage">SolarizeImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the SolarizeImage method is:</p>

<pre class="code">
  MagickBooleanType SolarizeImage(Image *image,const double threshold)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>threshold</h5>
<ol><p>Define the extent of the solarization.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="SteganoImage">SteganoImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the SteganoImage method is:</p>

<pre class="code">
  Image *SteganoImage(const Image *image,Image *watermark,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>watermark</h5>
<ol><p>the watermark image.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the StereoAnaglyphImage method is:</p>

<pre class="code">
  Image *StereoImage(const Image *left_image,const Image *right_image,
    ExceptionInfo *exception)
  Image *StereoAnaglyphImage(const Image *left_image,
    const Image *right_image,const long x_offset,const long y_offset,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>left_image</h5>
<ol><p>the left image.</p></ol>

<h5>right_image</h5>
<ol><p>the right image.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

<h5>x_offset</h5>
<ol><p>amount, in pixels, by which the left image is offset to the right of the right image.</p></ol>

<h5>y_offset</h5>
<ol><p>amount, in pixels, by which the left image is offset to the bottom of the right image.</p></ol>


 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="SwirlImage">SwirlImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the SwirlImage method is:</p>

<pre class="code">
  Image *SwirlImage(const Image *image,double degrees,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>degrees</h5>
<ol><p>Define the tightness of the swirling effect.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="TintImage">TintImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the TintImage method is:</p>

<pre class="code">
  Image *TintImage(const Image *image,const char *opacity,
    const PixelPacket tint,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>opacity</h5>
<ol><p>A color value used for tinting.</p></ol>

<h5>tint</h5>
<ol><p>A color value used for tinting.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="VignetteImage">VignetteImage</a></h2>
<div class="doc-section">

<p>VignetteImage() softens the edges of the image in vignette style.</p></ol>

<p>The format of the VignetteImage method is:</p>

<pre class="code">
  Image *VignetteImage(const Image *image,const double radius,
    const double sigma,const long x,const long y,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>radius</h5>
<ol><p>the radius of the pixel neighborhood.</p></ol>

<h5>sigma</h5>
<ol><p>the standard deviation of the Gaussian, in pixels.</p></ol>

<h5>x, y</h5>
<ol><p>Define the x and y ellipse offset.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>
<h2><a href="http://www.imagemagick.org/api/MagickCore/fx
_8c.html" target="source" name="WaveImage">WaveImage</a></h2>
<div class="doc-section">

<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></ol>

<p>The format of the WaveImage method is:</p>

<pre class="code">
  Image *WaveImage(const Image *image,const double amplitude,
    const double wave_length,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p></ol>

<h5>image</h5>
<ol><p>the image.</p></ol>

<h5>amplitude, wave_length</h5>
<ol><p>Define the amplitude and wave length of the sine wave.</p></ol>

<h5>exception</h5>
<ol><p>return any errors or warnings in this structure.</p></ol>

 </div>

</div>

<div id="linkbar">
 <!--    <span id="linkbar-west">&nbsp;</span>  -->
    <span id="linkbar-center">
      <a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> &bull;
    <a href="http://studio.webbyland.com/ImageMagick/MagickStudio/scripts/MagickStudio.cgi">Studio</a>
    </span>
    <span id="linkbar-east">&nbsp;</span>
  </div>
  <div class="footer">
    <span id="footer-west">&copy; 1999-2010 ImageMagick Studio LLC</span>
    <span id="footer-east"> <a href="../http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>
  </div>
  <div style="clear: both; margin: 0; width: 100%; "></div>
</body>
</html>