<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.11"/> <title>Qwt User's Guide: QwtPixelMatrix Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); $(window).load(resizeHeight); </script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script 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class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('class_qwt_pixel_matrix.html','');}); </script> <div id="doc-content"> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div class="header"> <div class="summary"> <a href="#pub-methods">Public Member Functions</a> | <a href="class_qwt_pixel_matrix-members.html">List of all members</a> </div> <div class="headertitle"> <div class="title">QwtPixelMatrix Class Reference</div> </div> </div><!--header--> <div class="contents"> <p>A bit field corresponding to the pixels of a rectangle. <a href="class_qwt_pixel_matrix.html#details">More...</a></p> <p><code>#include <<a class="el" href="qwt__pixel__matrix_8h_source.html">qwt_pixel_matrix.h</a>></code></p> <div class="dynheader"> Inheritance diagram for QwtPixelMatrix:</div> <div class="dyncontent"> <div class="center"><img src="class_qwt_pixel_matrix__inherit__graph.png" border="0" usemap="#_qwt_pixel_matrix_inherit__map" alt="Inheritance graph"/></div> <map name="_qwt_pixel_matrix_inherit__map" id="_qwt_pixel_matrix_inherit__map"> </map> <center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr class="memitem:aa197eddf30db429ab267db2a875e7d71"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#aa197eddf30db429ab267db2a875e7d71">QwtPixelMatrix</a> (const QRect &<a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a>)</td></tr> <tr class="memdesc:aa197eddf30db429ab267db2a875e7d71"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#aa197eddf30db429ab267db2a875e7d71">More...</a><br /></td></tr> <tr class="separator:aa197eddf30db429ab267db2a875e7d71"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a6691629e198fb39e6f653038cfb74f6b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6691629e198fb39e6f653038cfb74f6b"></a>  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a6691629e198fb39e6f653038cfb74f6b">~QwtPixelMatrix</a> ()</td></tr> <tr class="memdesc:a6691629e198fb39e6f653038cfb74f6b"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br /></td></tr> <tr class="separator:a6691629e198fb39e6f653038cfb74f6b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ae8150f8d1f1922746172e9da1488e98b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#ae8150f8d1f1922746172e9da1488e98b">setRect</a> (const QRect &<a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a>)</td></tr> <tr class="separator:ae8150f8d1f1922746172e9da1488e98b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a05162507dc01b9616ef4b6b079786599"><td class="memItemLeft" align="right" valign="top">QRect </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect</a> () const </td></tr> <tr class="separator:a05162507dc01b9616ef4b6b079786599"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a1089a8d1da928ed35766da496a9b234e"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a1089a8d1da928ed35766da496a9b234e">testPixel</a> (int x, int y) const </td></tr> <tr class="memdesc:a1089a8d1da928ed35766da496a9b234e"><td class="mdescLeft"> </td><td class="mdescRight">Test if a pixel has been set. <a href="#a1089a8d1da928ed35766da496a9b234e">More...</a><br /></td></tr> <tr class="separator:a1089a8d1da928ed35766da496a9b234e"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a51c2ecd161c0c93dccb62fcf640ff280"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a51c2ecd161c0c93dccb62fcf640ff280">testAndSetPixel</a> (int x, int y, bool on)</td></tr> <tr class="memdesc:a51c2ecd161c0c93dccb62fcf640ff280"><td class="mdescLeft"> </td><td class="mdescRight">Set a pixel and test if a pixel has been set before. <a href="#a51c2ecd161c0c93dccb62fcf640ff280">More...</a><br /></td></tr> <tr class="separator:a51c2ecd161c0c93dccb62fcf640ff280"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a786989b4ff383d7939edbba31c89178d"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_pixel_matrix.html#a786989b4ff383d7939edbba31c89178d">index</a> (int x, int y) const </td></tr> <tr class="memdesc:a786989b4ff383d7939edbba31c89178d"><td class="mdescLeft"> </td><td class="mdescRight">Calculate the index in the bit field corresponding to a position. <a href="#a786989b4ff383d7939edbba31c89178d">More...</a><br /></td></tr> <tr class="separator:a786989b4ff383d7939edbba31c89178d"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><p>A bit field corresponding to the pixels of a rectangle. </p> <p><a class="el" href="class_qwt_pixel_matrix.html" title="A bit field corresponding to the pixels of a rectangle. ">QwtPixelMatrix</a> is intended to filter out duplicates in an unsorted array of points. </p> </div><h2 class="groupheader">Constructor & Destructor Documentation</h2> <a class="anchor" id="aa197eddf30db429ab267db2a875e7d71"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QwtPixelMatrix::QwtPixelMatrix </td> <td>(</td> <td class="paramtype">const QRect & </td> <td class="paramname"><em>rect</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Constructor. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">rect</td><td>Bounding rectangle for the matrix </td></tr> </table> </dd> </dl> </div> </div> <h2 class="groupheader">Member Function Documentation</h2> <a class="anchor" id="a786989b4ff383d7939edbba31c89178d"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">int QwtPixelMatrix::index </td> <td>(</td> <td class="paramtype">int </td> <td class="paramname"><em>x</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>y</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Calculate the index in the bit field corresponding to a position. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>X-coordinate </td></tr> <tr><td class="paramname">y</td><td>Y-coordinate </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Index, when <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a> contains pos - otherwise -1. </dd></dl> </div> </div> <a class="anchor" id="a05162507dc01b9616ef4b6b079786599"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QRect QwtPixelMatrix::rect </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const</td> </tr> </table> </div><div class="memdoc"> <dl class="section return"><dt>Returns</dt><dd>Bounding rectangle </dd></dl> </div> </div> <a class="anchor" id="ae8150f8d1f1922746172e9da1488e98b"></a> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void QwtPixelMatrix::setRect </td> <td>(</td> <td class="paramtype">const QRect & </td> <td class="paramname"><em>rect</em></td><td>)</td> <td></td> </tr> </table> </div><div class="memdoc"> <p>Set the bounding rectangle of the matrix</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">rect</td><td>Bounding rectangle</td></tr> </table> </dd> </dl> <dl class="section note"><dt>Note</dt><dd>All bits are cleared </dd></dl> </div> </div> <a class="anchor" id="a51c2ecd161c0c93dccb62fcf640ff280"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">bool QwtPixelMatrix::testAndSetPixel </td> <td>(</td> <td class="paramtype">int </td> <td class="paramname"><em>x</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>y</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>on</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Set a pixel and test if a pixel has been set before. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>X-coordinate </td></tr> <tr><td class="paramname">y</td><td>Y-coordinate </td></tr> <tr><td class="paramname">on</td><td>Set/Clear the pixel</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>true, when pos is outside of <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a>, or when the pixel was set before. </dd></dl> </div> </div> <a class="anchor" id="a1089a8d1da928ed35766da496a9b234e"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">bool QwtPixelMatrix::testPixel </td> <td>(</td> <td class="paramtype">int </td> <td class="paramname"><em>x</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">int </td> <td class="paramname"><em>y</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const</td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">inline</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Test if a pixel has been set. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">x</td><td>X-coordinate </td></tr> <tr><td class="paramname">y</td><td>Y-coordinate</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>true, when pos is outside of <a class="el" href="class_qwt_pixel_matrix.html#a05162507dc01b9616ef4b6b079786599">rect()</a>, or when the pixel has already been set. </dd></dl> </div> </div> </div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="class_qwt_pixel_matrix.html">QwtPixelMatrix</a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.11 </li> </ul> </div> </body> </html>