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<!DOCTYPE html> <html lang="en"> <head> <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" /> <title>ImageMagick: MagickWand, C API for ImageMagick: Pixel Iterator Methods</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <meta name="application-name" content="ImageMagick"/> <meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. 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<link rel="icon" href="../image/wand.png"/> <link rel="shortcut icon" href="../image/wand.ico"/> <link rel="stylesheet" href="../css/magick.php"/> </head> <body> <div class="main"> <div class="magick-masthead"> <div class="container"> <script async="async" src="http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-3129977114552745" data-ad-slot="6345125851" data-ad-format="auto"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> <nav class="magick-nav"> <a class="magick-nav-item " href="../index.php">Home</a> <a class="magick-nav-item " href="../script/binary-releases.php">Download</a> <a class="magick-nav-item " href="../script/command-line-tools.php">Tools</a> <a class="magick-nav-item " href="../script/command-line-options.php">Options</a> <a class="magick-nav-item " href="../script/resources.php">Resources</a> <a class="magick-nav-item " href="../script/api.php">Develop</a> <a class="magick-nav-item " href="../script/search.php">Search</a> <a class="magick-nav-item pull-right" href="http://www.imagemagick.org/discourse-server/">Community</a> </nav> </div> </div> <div class="container"> <div class="magick-header"> <p class="text-center"><a href="pixel-iterator.php#ClearPixelIterator">ClearPixelIterator</a> • <a href="pixel-iterator.php#ClonePixelIterator">ClonePixelIterator</a> • <a href="pixel-iterator.php#DestroyPixelIterator">DestroyPixelIterator</a> • <a href="pixel-iterator.php#IsPixelIterator">IsPixelIterator</a> • <a href="pixel-iterator.php#NewPixelIterator">NewPixelIterator</a> • <a href="pixel-iterator.php#PixelClearIteratorException">PixelClearIteratorException</a> • <a href="pixel-iterator.php#NewPixelRegionIterator">NewPixelRegionIterator</a> • <a href="pixel-iterator.php#PixelGetCurrentIteratorRow">PixelGetCurrentIteratorRow</a> • <a href="pixel-iterator.php#PixelGetIteratorException">PixelGetIteratorException</a> • <a href="pixel-iterator.php#PixelGetIteratorExceptionType">PixelGetIteratorExceptionType</a> • <a href="pixel-iterator.php#PixelGetIteratorRow">PixelGetIteratorRow</a> • <a href="pixel-iterator.php#PixelGetNextIteratorRow">PixelGetNextIteratorRow</a> • <a href="pixel-iterator.php#PixelGetPreviousIteratorRow">PixelGetPreviousIteratorRow</a> • <a href="pixel-iterator.php#PixelResetIterator">PixelResetIterator</a> • <a href="pixel-iterator.php#PixelSetFirstIteratorRow">PixelSetFirstIteratorRow</a> • <a href="pixel-iterator.php#PixelSetIteratorRow">PixelSetIteratorRow</a> • <a href="pixel-iterator.php#PixelSetLastIteratorRow">PixelSetLastIteratorRow</a> • <a href="pixel-iterator.php#PixelSyncIterator">PixelSyncIterator</a></p> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="ClearPixelIterator">ClearPixelIterator</a></h2> <p>ClearPixelIterator() clear resources associated with a PixelIterator.</p> <p>The format of the ClearPixelIterator method is:</p> <pre class="text"> void ClearPixelIterator(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="ClonePixelIterator">ClonePixelIterator</a></h2> <p>ClonePixelIterator() makes an exact copy of the specified iterator.</p> <p>The format of the ClonePixelIterator method is:</p> <pre class="text"> PixelIterator *ClonePixelIterator(const PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the magick iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="DestroyPixelIterator">DestroyPixelIterator</a></h2> <p>DestroyPixelIterator() deallocates resources associated with a PixelIterator.</p> <p>The format of the DestroyPixelIterator method is:</p> <pre class="text"> PixelIterator *DestroyPixelIterator(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="IsPixelIterator">IsPixelIterator</a></h2> <p>IsPixelIterator() returns MagickTrue if the iterator is verified as a pixel iterator.</p> <p>The format of the IsPixelIterator method is:</p> <pre class="text"> MagickBooleanType IsPixelIterator(const PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the magick iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="NewPixelIterator">NewPixelIterator</a></h2> <p>NewPixelIterator() returns a new pixel iterator.</p> <p>The format of the NewPixelIterator method is:</p> <pre class="text"> PixelIterator *NewPixelIterator(MagickWand *wand) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>wand</dt> <dd>the magick wand. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelClearIteratorException">PixelClearIteratorException</a></h2> <p>PixelClearIteratorException() clear any exceptions associated with the iterator.</p> <p>The format of the PixelClearIteratorException method is:</p> <pre class="text"> MagickBooleanType PixelClearIteratorException(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="NewPixelRegionIterator">NewPixelRegionIterator</a></h2> <p>NewPixelRegionIterator() returns a new pixel iterator.</p> <p>The format of the NewPixelRegionIterator method is:</p> <pre class="text"> PixelIterator *NewPixelRegionIterator(MagickWand *wand,const ssize_t x, const ssize_t y,const size_t width,const size_t height) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>wand</dt> <dd>the magick wand. </dd> <dd> </dd> <dt>x,y,columns,rows</dt> <dd> These values define the perimeter of a region of pixels. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetCurrentIteratorRow">PixelGetCurrentIteratorRow</a></h2> <p>PixelGetCurrentIteratorRow() returns the current row as an array of pixel wands from the pixel iterator.</p> <p>The format of the PixelGetCurrentIteratorRow method is:</p> <pre class="text"> PixelWand **PixelGetCurrentIteratorRow(PixelIterator *iterator, size_t *number_wands) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> <dt>number_wands</dt> <dd>the number of pixel wands. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetIteratorException">PixelGetIteratorException</a></h2> <p>PixelGetIteratorException() returns the severity, reason, and description of any error that occurs when using other methods in this API.</p> <p>The format of the PixelGetIteratorException method is:</p> <pre class="text"> char *PixelGetIteratorException(const PixelIterator *iterator, ExceptionType *severity) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> <dt>severity</dt> <dd>the severity of the error is returned here. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetIteratorExceptionType">PixelGetIteratorExceptionType</a></h2> <p>PixelGetIteratorExceptionType() the exception type associated with the iterator. If no exception has occurred, UndefinedExceptionType is returned.</p> <p>The format of the PixelGetIteratorExceptionType method is:</p> <pre class="text"> ExceptionType PixelGetIteratorExceptionType( const PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetIteratorRow">PixelGetIteratorRow</a></h2> <p>PixelGetIteratorRow() returns the current pixel iterator row.</p> <p>The format of the PixelGetIteratorRow method is:</p> <pre class="text"> MagickBooleanType PixelGetIteratorRow(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetNextIteratorRow">PixelGetNextIteratorRow</a></h2> <p>PixelGetNextIteratorRow() returns the next row as an array of pixel wands from the pixel iterator.</p> <p>The format of the PixelGetNextIteratorRow method is:</p> <pre class="text"> PixelWand **PixelGetNextIteratorRow(PixelIterator *iterator, size_t *number_wands) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> <dt>number_wands</dt> <dd>the number of pixel wands. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelGetPreviousIteratorRow">PixelGetPreviousIteratorRow</a></h2> <p>PixelGetPreviousIteratorRow() returns the previous row as an array of pixel wands from the pixel iterator.</p> <p>The format of the PixelGetPreviousIteratorRow method is:</p> <pre class="text"> PixelWand **PixelGetPreviousIteratorRow(PixelIterator *iterator, size_t *number_wands) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> <dt>number_wands</dt> <dd>the number of pixel wands. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelResetIterator">PixelResetIterator</a></h2> <p>PixelResetIterator() resets the pixel iterator. Use it in conjunction with PixelGetNextIteratorRow() to iterate over all the pixels in a pixel container.</p> <p>The format of the PixelResetIterator method is:</p> <pre class="text"> void PixelResetIterator(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelSetFirstIteratorRow">PixelSetFirstIteratorRow</a></h2> <p>PixelSetFirstIteratorRow() sets the pixel iterator to the first pixel row.</p> <p>The format of the PixelSetFirstIteratorRow method is:</p> <pre class="text"> void PixelSetFirstIteratorRow(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the magick iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelSetIteratorRow">PixelSetIteratorRow</a></h2> <p>PixelSetIteratorRow() set the pixel iterator row.</p> <p>The format of the PixelSetIteratorRow method is:</p> <pre class="text"> MagickBooleanType PixelSetIteratorRow(PixelIterator *iterator, const ssize_t row) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelSetLastIteratorRow">PixelSetLastIteratorRow</a></h2> <p>PixelSetLastIteratorRow() sets the pixel iterator to the last pixel row.</p> <p>The format of the PixelSetLastIteratorRow method is:</p> <pre class="text"> void PixelSetLastIteratorRow(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the magick iterator. </dd> <dd> </dd> </dl> <h2><a href="http://nextgen.imagemagick.org/api/MagickWand/pixel-iterator_8c.html" id="PixelSyncIterator">PixelSyncIterator</a></h2> <p>PixelSyncIterator() syncs the pixel iterator.</p> <p>The format of the PixelSyncIterator method is:</p> <pre class="text"> MagickBooleanType PixelSyncIterator(PixelIterator *iterator) </pre> <p>A description of each parameter follows:</p> <dd> </dd> <dd> </dd> <dl class="dl-horizontal"> <dt>iterator</dt> <dd>the pixel iterator. </dd> <dd> </dd> </dl> </div> <footer class="magick-footer"> <p><a href="../script/support.php">Donate</a> • <a href="../script/sitemap.php">Sitemap</a> • <a href="../script/links.php">Related</a> • <a href="../script/architecture.php">Architecture</a> </p> <p><a href="pixel-iterator.php#">Back to top</a> • <a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x89AB63D48277377A">Public Key</a> • <a href="../script/contact.php">Contact Us</a></p> <p><small>© 1999-2016 ImageMagick Studio LLC</small></p> </footer> </div><!-- /.container --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> <script src="http://nextgen.imagemagick.org/js/magick.php"></script> </div> </body> </html>