<!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: QwtClipper 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 type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <script type="text/javascript"> $(document).ready(function() { init_search(); 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</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-static-methods">Static Public Member Functions</a> | <a href="class_qwt_clipper-members.html">List of all members</a> </div> <div class="headertitle"> <div class="title">QwtClipper Class Reference</div> </div> </div><!--header--> <div class="contents"> <p>Some clipping algorithms. <a href="class_qwt_clipper.html#details">More...</a></p> <p><code>#include <<a class="el" href="qwt__clipper_8h_source.html">qwt_clipper.h</a>></code></p> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a> Static Public Member Functions</h2></td></tr> <tr class="memitem:ab42cda85c068194ae0c60f66ecd12022"><td class="memItemLeft" align="right" valign="top">static QPolygon </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab42cda85c068194ae0c60f66ecd12022">clipPolygon</a> (const QRect &, const QPolygon &, bool closePolygon=false)</td></tr> <tr class="separator:ab42cda85c068194ae0c60f66ecd12022"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:adc4aa63cfb8b7ed97311b117f2613f0d"><td class="memItemLeft" align="right" valign="top">static QPolygon </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#adc4aa63cfb8b7ed97311b117f2613f0d">clipPolygon</a> (const QRectF &, const QPolygon &, bool closePolygon=false)</td></tr> <tr class="separator:adc4aa63cfb8b7ed97311b117f2613f0d"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ab7f737adc53ccd730934197359de3c95"><td class="memItemLeft" align="right" valign="top">static QPolygonF </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab7f737adc53ccd730934197359de3c95">clipPolygonF</a> (const QRectF &, const QPolygonF &, bool closePolygon=false)</td></tr> <tr class="separator:ab7f737adc53ccd730934197359de3c95"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ab36605186b4a1c411fccb3b68cf1724a"><td class="memItemLeft" align="right" valign="top">static QVector< <a class="el" href="class_qwt_interval.html">QwtInterval</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_clipper.html#ab36605186b4a1c411fccb3b68cf1724a">clipCircle</a> (const QRectF &, const QPointF &, double radius)</td></tr> <tr class="separator:ab36605186b4a1c411fccb3b68cf1724a"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><p>Some clipping algorithms. </p> </div><h2 class="groupheader">Member Function Documentation</h2> <a class="anchor" id="ab36605186b4a1c411fccb3b68cf1724a"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">QVector< <a class="el" href="class_qwt_interval.html">QwtInterval</a> > QwtClipper::clipCircle </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPointF & </td> <td class="paramname"><em>center</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>radius</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">static</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Circle clipping</p> <p><a class="el" href="class_qwt_clipper.html#ab36605186b4a1c411fccb3b68cf1724a">clipCircle()</a> divides a circle into intervals of angles representing arcs of the circle. When the circle is completely inside the clip rectangle an interval [0.0, 2 * M_PI] is returned.</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">center</td><td>Center of the circle </td></tr> <tr><td class="paramname">radius</td><td>Radius of the circle</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Arcs of the circle </dd></dl> </div> </div> <a class="anchor" id="ab42cda85c068194ae0c60f66ecd12022"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">QPolygon QwtClipper::clipPolygon </td> <td>(</td> <td class="paramtype">const QRect & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPolygon & </td> <td class="paramname"><em>polygon</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>closePolygon</em> = <code>false</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">static</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Sutherland-Hodgman polygon clipping</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">polygon</td><td>Polygon </td></tr> <tr><td class="paramname">closePolygon</td><td>True, when the polygon is closed</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Clipped polygon </dd></dl> </div> </div> <a class="anchor" id="adc4aa63cfb8b7ed97311b117f2613f0d"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">QPolygon QwtClipper::clipPolygon </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPolygon & </td> <td class="paramname"><em>polygon</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>closePolygon</em> = <code>false</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">static</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Sutherland-Hodgman polygon clipping</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">polygon</td><td>Polygon </td></tr> <tr><td class="paramname">closePolygon</td><td>True, when the polygon is closed</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Clipped polygon </dd></dl> </div> </div> <a class="anchor" id="ab7f737adc53ccd730934197359de3c95"></a> <div class="memitem"> <div class="memproto"> <table class="mlabels"> <tr> <td class="mlabels-left"> <table class="memname"> <tr> <td class="memname">QPolygonF QwtClipper::clipPolygonF </td> <td>(</td> <td class="paramtype">const QRectF & </td> <td class="paramname"><em>clipRect</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPolygonF & </td> <td class="paramname"><em>polygon</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>closePolygon</em> = <code>false</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </td> <td class="mlabels-right"> <span class="mlabels"><span class="mlabel">static</span></span> </td> </tr> </table> </div><div class="memdoc"> <p>Sutherland-Hodgman polygon clipping</p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">clipRect</td><td>Clip rectangle </td></tr> <tr><td class="paramname">polygon</td><td>Polygon </td></tr> <tr><td class="paramname">closePolygon</td><td>True, when the polygon is closed</td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>Clipped polygon </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_clipper.html">QwtClipper</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>